/* roulang page: index */
:root {
            --brand-orange: #FF6A13;
            --brand-orange-hover: #E05500;
            --brand-orange-dark: #CC5500;
            --deep-black: #1A1A1A;
            --dark-bg: #2A2A2A;
            --data-green: #00C853;
            --data-green-light: #E8F5E9;
            --light-gray: #F5F5F5;
            --mid-gray: #EAEAEA;
            --text-body: #333333;
            --text-heading: #111111;
            --text-muted: #777777;
            --text-light: #AAAAAA;
            --white: #FFFFFF;
            --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --card-shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.12);
            --card-radius: 12px;
            --btn-radius: 30px;
            --input-radius: 8px;
            --nav-radius: 40px;
            --section-padding: 80px;
            --section-padding-mobile: 40px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-hero: 48px;
            --font-section-title: 36px;
            --font-card-title: 20px;
            --font-body: 16px;
            --font-small: 14px;
            --max-width: 1200px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: var(--font-body);
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--white);
            overflow-x: hidden;
            padding-top: 0;
        }

        a {
            color: var(--brand-orange);
            text-decoration: none;
            transition: color var(--transition-normal);
        }
        a:hover {
            color: var(--brand-orange-hover);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        button:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
        }
        input:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 2px;
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            font-weight: 600;
            line-height: 1.3;
            margin-top: 0;
        }
        p {
            margin-bottom: 1em;
        }
        section {
            position: relative;
        }

        /* ========== 悬浮胶囊导航 ========== */
        .main-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: 90%;
            max-width: var(--max-width);
            background: rgba(26, 26, 26, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--nav-radius);
            padding: 10px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            transition: all var(--transition-normal);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .main-nav.scrolled {
            background: rgba(26, 26, 26, 0.98);
            box-shadow: 0 8px 36px rgba(0, 0, 0, 0.35);
            top: 8px;
        }
        .nav-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--brand-orange) !important;
            white-space: nowrap;
            letter-spacing: 0.5px;
            text-decoration: none !important;
            transition: opacity var(--transition-normal);
        }
        .nav-logo:hover {
            opacity: 0.85;
            color: var(--brand-orange) !important;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: #CCCCCC;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 24px;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none !important;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.1);
        }
        .nav-links a.active {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.15);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--brand-orange) !important;
            color: #fff !important;
            border-radius: 24px !important;
            padding: 9px 20px !important;
            font-weight: 600 !important;
            font-size: 14px !important;
            transition: all var(--transition-normal) !important;
            border: none;
        }
        .nav-cta-btn:hover {
            background: var(--brand-orange-hover) !important;
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 106, 19, 0.4);
        }
        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 26px;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: background var(--transition-fast);
        }
        .nav-hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(26, 26, 26, 0.97);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 22px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-normal);
        }
        .mobile-menu-overlay.show {
            display: flex;
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu-overlay a {
            color: #ddd;
            font-size: 20px;
            font-weight: 500;
            padding: 12px 28px;
            border-radius: 28px;
            transition: all var(--transition-normal);
            text-decoration: none !important;
        }
        .mobile-menu-overlay a:hover {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.12);
        }
        .mobile-menu-overlay .mobile-cta {
            background: var(--brand-orange);
            color: #fff !important;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: 28px;
            margin-top: 8px;
        }
        .mobile-menu-close {
            position: absolute;
            top: 24px;
            right: 28px;
            background: none;
            border: none;
            color: #fff;
            font-size: 32px;
            cursor: pointer;
            padding: 8px 12px;
            border-radius: 8px;
        }

        /* ========== Hero Section ========== */
        .hero-section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            position: relative;
            padding: 120px 0 80px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.85) 0%, rgba(26, 26, 26, 0.5) 60%, rgba(26, 26, 26, 0.7) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-bottom: 28px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 14px;
            font-weight: 500;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        .hero-badge i {
            color: var(--data-green);
            font-size: 12px;
        }
        .hero-section h1 {
            font-size: var(--font-hero);
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-section h1 .highlight {
            color: var(--brand-orange);
        }
        .hero-subtitle {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            align-items: center;
        }
        .btn-hero-primary {
            display: inline-block;
            background: var(--brand-orange);
            color: #fff;
            font-weight: 600;
            font-size: 17px;
            padding: 14px 36px;
            border-radius: var(--btn-radius);
            transition: all var(--transition-normal);
            border: none;
            text-decoration: none !important;
            box-shadow: 0 6px 24px rgba(255, 106, 19, 0.4);
        }
        .btn-hero-primary:hover {
            background: var(--brand-orange-hover);
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(255, 106, 19, 0.55);
            color: #fff;
        }
        .btn-hero-outline {
            display: inline-block;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 17px;
            padding: 14px 36px;
            border-radius: var(--btn-radius);
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-normal);
            text-decoration: none !important;
        }
        .btn-hero-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-3px);
        }
        .hero-qualification {
            margin-top: 32px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            background: rgba(255, 255, 255, 0.06);
            padding: 10px 22px;
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .hero-qualification i {
            color: var(--data-green);
        }

        /* ========== 通用板块样式 ========== */
        .section-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding {
            padding: var(--section-padding) 0;
        }
        .section-bg-gray {
            background: var(--light-gray);
        }
        .section-bg-dark {
            background: var(--dark-bg);
            color: #ddd;
        }
        .section-bg-dark h2,
        .section-bg-dark h3 {
            color: #fff;
        }
        .section-title {
            font-size: var(--font-section-title);
            font-weight: 700;
            text-align: center;
            margin-bottom: 14px;
            color: var(--text-heading);
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 17px;
            margin-bottom: 48px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-bg-dark .section-subtitle {
            color: #bbb;
        }

        /* ========== 卖点三连 ========== */
        .selling-points-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .selling-point-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-slow);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }
        .selling-point-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-6px);
            border-color: rgba(255, 106, 19, 0.2);
        }
        .selling-point-card .sp-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: rgba(255, 106, 19, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--brand-orange);
            transition: all var(--transition-normal);
        }
        .selling-point-card:hover .sp-icon {
            background: var(--brand-orange);
            color: #fff;
            transform: scale(1.08);
        }
        .selling-point-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-heading);
        }
        .selling-point-card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 指标看板 ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .metric-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 30px 22px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-slow);
            border: 1px solid transparent;
        }
        .metric-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 106, 19, 0.15);
        }
        .metric-number {
            font-size: 46px;
            font-weight: 700;
            color: var(--brand-orange);
            line-height: 1;
            margin-bottom: 6px;
        }
        .metric-unit {
            font-size: 18px;
            font-weight: 500;
            color: var(--brand-orange);
            margin-left: 2px;
        }
        .metric-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
        }
        .metric-badge {
            display: inline-block;
            background: rgba(0, 200, 83, 0.1);
            color: var(--data-green);
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            margin-top: 6px;
        }

        /* ========== 服务矩阵 - 非对称网格 ========== */
        .service-asymmetric {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 24px;
        }
        .service-asymmetric .service-card-large {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 40px 32px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-slow);
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-height: 360px;
            position: relative;
            overflow: hidden;
        }
        .service-asymmetric .service-card-large:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 106, 19, 0.2);
        }
        .service-asymmetric .service-card-large .svc-icon {
            font-size: 48px;
            color: var(--brand-orange);
            margin-bottom: 18px;
        }
        .service-asymmetric .service-card-large h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .service-asymmetric .service-card-large p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
            max-width: 500px;
        }
        .service-right-stack {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .service-card-small {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px 24px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-slow);
            border: 1px solid transparent;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .service-card-small:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 106, 19, 0.2);
        }
        .service-card-small .svc-icon {
            font-size: 32px;
            color: var(--brand-orange);
            margin-bottom: 12px;
        }
        .service-card-small h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .service-card-small p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 0;
        }
        .svc-learn-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--brand-orange);
            font-weight: 600;
            font-size: 14px;
            margin-top: 12px;
            transition: gap var(--transition-normal);
        }
        .svc-learn-more:hover {
            gap: 10px;
            color: var(--brand-orange-hover);
        }

        /* ========== 场景演示 ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .scenario-card {
            background: #fff;
            border-radius: var(--card-radius);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-slow);
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
        }
        .scenario-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 106, 19, 0.2);
        }
        .scenario-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }
        .scenario-card-body {
            padding: 24px 22px;
            flex: 1;
        }
        .scenario-card-body h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .scenario-card-body p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 品牌介绍 ========== */
        .brand-intro-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .brand-intro-text h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-heading);
        }
        .brand-intro-text p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 14px;
        }
        .brand-intro-image img {
            border-radius: var(--card-radius);
            box-shadow: var(--card-shadow);
            width: 100%;
            height: auto;
            object-fit: cover;
            max-height: 420px;
        }

        /* ========== 社会认同 ========== */
        .social-proof-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .social-proof-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px 24px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-slow);
            border: 1px solid transparent;
            text-align: center;
        }
        .social-proof-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 106, 19, 0.2);
        }
        .social-proof-card .sp-avatar {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            margin: 0 auto 14px;
            background: var(--light-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--brand-orange);
        }
        .social-proof-card .sp-name {
            font-weight: 600;
            font-size: 16px;
            color: var(--text-heading);
        }
        .social-proof-card .sp-role {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .social-proof-card .sp-quote {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            font-style: italic;
        }

        /* ========== 结果对比 ========== */
        .comparison-row {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 20px;
            align-items: center;
            max-width: 900px;
            margin: 0 auto;
        }
        .comparison-card {
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--card-radius);
            padding: 32px 24px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            transition: all var(--transition-normal);
        }
        .comparison-card.before {
            border-left: 4px solid #888;
        }
        .comparison-card.after {
            border-left: 4px solid var(--data-green);
            background: rgba(0, 200, 83, 0.06);
        }
        .comparison-card .comp-label {
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
            color: #aaa;
        }
        .comparison-card.after .comp-label {
            color: var(--data-green);
        }
        .comparison-card .comp-data {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .comparison-card.before .comp-data {
            color: #999;
        }
        .comparison-card.after .comp-data {
            color: var(--data-green);
        }
        .comparison-card .comp-desc {
            font-size: 14px;
            color: #bbb;
            line-height: 1.6;
        }
        .comp-vs {
            font-size: 28px;
            font-weight: 700;
            color: var(--brand-orange);
            text-align: center;
            width: 60px;
            flex-shrink: 0;
        }

        /* ========== 资讯列表 ========== */
        .news-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .news-item {
            display: flex;
            gap: 20px;
            padding: 18px 0;
            border-bottom: 1px solid var(--mid-gray);
            transition: all var(--transition-normal);
            align-items: flex-start;
        }
        .news-item:nth-child(odd) {
            background: rgba(245, 245, 245, 0.4);
            margin: 0 -16px;
            padding-left: 16px;
            padding-right: 16px;
            border-radius: 8px;
        }
        .news-item:hover {
            background: rgba(255, 106, 19, 0.03);
        }
        .news-date {
            flex-shrink: 0;
            width: 70px;
            text-align: center;
            font-weight: 700;
            color: var(--brand-orange);
            font-size: 15px;
            line-height: 1.3;
            padding-top: 2px;
        }
        .news-date .day {
            font-size: 26px;
            display: block;
        }
        .news-date .month {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }
        .news-content h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-heading);
        }
        .news-content p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 6px;
            line-height: 1.6;
        }
        .news-read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-orange);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-normal);
        }
        .news-read-more:hover {
            gap: 8px;
            color: var(--brand-orange-hover);
        }

        /* ========== 版本更新 Changelog ========== */
        .changelog-timeline {
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            padding-left: 32px;
        }
        .changelog-timeline::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--mid-gray);
            border-radius: 1px;
        }
        .changelog-item {
            position: relative;
            margin-bottom: 28px;
            padding-left: 20px;
        }
        .changelog-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--brand-orange);
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px var(--brand-orange);
            z-index: 1;
        }
        .changelog-item .cl-version {
            font-weight: 700;
            font-size: 15px;
            color: var(--brand-orange);
            margin-bottom: 4px;
        }
        .changelog-item .cl-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .changelog-item p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 议程时间线 ========== */
        .agenda-timeline {
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            padding-left: 40px;
        }
        .agenda-timeline::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, var(--brand-orange), var(--data-green));
            border-radius: 2px;
        }
        .agenda-node {
            position: relative;
            margin-bottom: 32px;
            padding: 20px 22px;
            background: #fff;
            border-radius: var(--card-radius);
            box-shadow: var(--card-shadow);
            border: 1px solid transparent;
            transition: all var(--transition-normal);
        }
        .agenda-node:hover {
            box-shadow: var(--card-shadow-hover);
            border-color: rgba(255, 106, 19, 0.2);
            transform: translateX(4px);
        }
        .agenda-node::before {
            content: '';
            position: absolute;
            left: -32px;
            top: 24px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--brand-orange);
            border: 3px solid #fff;
            box-shadow: 0 0 0 4px rgba(255, 106, 19, 0.3);
            z-index: 1;
        }
        .agenda-node .ag-time {
            font-weight: 700;
            font-size: 14px;
            color: var(--brand-orange);
            margin-bottom: 6px;
            letter-spacing: 0.5px;
        }
        .agenda-node h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .agenda-node p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .agenda-node .ag-action {
            display: inline-block;
            margin-top: 8px;
            font-weight: 600;
            font-size: 13px;
            color: var(--brand-orange);
        }

        /* ========== 节日战役区 ========== */
        .campaign-zone {
            background: linear-gradient(135deg, #1A1A1A 0%, #2A1A10 50%, #1A1A1A 100%);
            border-radius: var(--card-radius);
            padding: 48px 36px;
            text-align: center;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(255, 106, 19, 0.2);
        }
        .campaign-zone::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(255, 106, 19, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .campaign-zone h2 {
            color: #fff;
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .campaign-zone .campaign-subtitle {
            color: #ccc;
            font-size: 16px;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .campaign-rewards {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
            margin-bottom: 28px;
        }
        .reward-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--card-radius);
            padding: 24px 20px;
            width: 160px;
            text-align: center;
            transition: all var(--transition-normal);
        }
        .reward-card:hover {
            background: rgba(255, 106, 19, 0.12);
            border-color: rgba(255, 106, 19, 0.4);
            transform: translateY(-4px);
        }
        .reward-card .reward-icon {
            font-size: 36px;
            margin-bottom: 10px;
            color: #FFD700;
        }
        .reward-card .reward-name {
            font-weight: 600;
            color: #fff;
            font-size: 15px;
            margin-bottom: 4px;
        }
        .reward-card .reward-desc {
            font-size: 12px;
            color: #aaa;
        }
        .campaign-cta {
            display: inline-block;
            background: var(--brand-orange);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 13px 34px;
            border-radius: var(--btn-radius);
            transition: all var(--transition-normal);
            text-decoration: none !important;
            position: relative;
            z-index: 1;
            box-shadow: 0 6px 24px rgba(255, 106, 19, 0.5);
        }
        .campaign-cta:hover {
            background: var(--brand-orange-hover);
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(255, 106, 19, 0.65);
            color: #fff;
        }

        /* ========== FAQ 手风琴 ========== */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-accordion .accordion-item {
            border: none;
            border-bottom: 1px solid var(--mid-gray);
            background: transparent;
            border-radius: 0;
        }
        .faq-accordion .accordion-button {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            background: #fff;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
            border-radius: 0;
            transition: all var(--transition-normal);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: #fafafa;
            color: var(--brand-orange);
            box-shadow: none;
        }
        .faq-accordion .accordion-button::after {
            background-image: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--brand-orange);
            transition: transform var(--transition-normal);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--brand-orange);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
            outline: 2px solid var(--brand-orange);
            outline-offset: -2px;
            border-radius: 4px;
        }
        .faq-accordion .accordion-body {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            background: #fafafa;
            padding: 16px 20px 20px;
        }

        /* ========== 转化表单 CTA ========== */
        .cta-form-section {
            background: linear-gradient(135deg, #FF6A13 0%, #CC5500 100%);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-form-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: -80px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .cta-form-text h2 {
            color: #fff;
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .cta-form-text p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .cta-form {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 32px 28px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
        }
        .cta-form .form-control {
            border-radius: var(--input-radius);
            border: 1px solid #ddd;
            padding: 12px 16px;
            font-size: 15px;
            transition: all var(--transition-normal);
            margin-bottom: 14px;
            box-shadow: none;
        }
        .cta-form .form-control:focus {
            border-color: var(--brand-orange);
            box-shadow: 0 0 0 3px rgba(255, 106, 19, 0.1);
            outline: none;
        }
        .cta-form .btn-submit {
            background: var(--brand-orange);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 13px 28px;
            border-radius: var(--btn-radius);
            border: none;
            width: 100%;
            transition: all var(--transition-normal);
            cursor: pointer;
        }
        .cta-form .btn-submit:hover {
            background: var(--brand-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 106, 19, 0.45);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #111;
            color: #AAA;
            padding: 48px 0 28px;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #AAA;
            font-size: 14px;
            transition: color var(--transition-normal);
        }
        .footer-col ul li a:hover {
            color: var(--brand-orange);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
        }
        .footer-bottom a {
            color: #AAA;
            transition: color var(--transition-normal);
        }
        .footer-bottom a:hover {
            color: var(--brand-orange);
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--brand-orange) !important;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1200px) {
            .section-container {
                padding: 0 16px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-asymmetric {
                grid-template-columns: 1fr;
            }
            .service-right-stack {
                flex-direction: row;
                gap: 20px;
            }
            .service-right-stack .service-card-small {
                flex: 1;
            }
            .comparison-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .comp-vs {
                width: auto;
            }
        }
        @media (max-width: 992px) {
            :root {
                --font-hero: 38px;
                --font-section-title: 28px;
                --section-padding: 56px;
            }
            .selling-points-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .social-proof-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .brand-intro-row {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-form-row {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .service-right-stack {
                flex-direction: column;
            }
        }
        @media (max-width: 768px) {
            :root {
                --font-hero: 30px;
                --font-section-title: 24px;
                --section-padding: 40px;
            }
            .main-nav {
                padding: 10px 18px;
                border-radius: 28px;
                top: 8px;
                width: 94%;
            }
            .nav-links {
                display: none;
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-hamburger {
                display: block;
            }
            .selling-points-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .social-proof-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-section {
                min-height: auto;
                padding: 140px 0 60px;
            }
            .hero-section h1 {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .campaign-rewards {
                gap: 12px;
            }
            .reward-card {
                width: 130px;
                padding: 18px 14px;
            }
            .section-title {
                font-size: 22px;
            }
            .cta-form-text h2 {
                font-size: 26px;
            }
            .comparison-row {
                grid-template-columns: 1fr;
            }
            .news-item {
                flex-direction: column;
                gap: 8px;
            }
            .news-date {
                width: auto;
                text-align: left;
                display: flex;
                gap: 6px;
                align-items: baseline;
            }
            .news-date .day {
                font-size: 18px;
            }
            .agenda-timeline {
                padding-left: 28px;
            }
            .changelog-timeline {
                padding-left: 24px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --font-hero: 26px;
                --font-section-title: 21px;
            }
            .hero-badge-row {
                gap: 8px;
            }
            .hero-badge {
                font-size: 12px;
                padding: 6px 12px;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                font-size: 15px;
                padding: 12px 24px;
            }
            .campaign-zone {
                padding: 32px 18px;
            }
            .campaign-zone h2 {
                font-size: 22px;
            }
            .reward-card {
                width: 100%;
                max-width: 140px;
            }
            .cta-form {
                padding: 24px 18px;
            }
        }

/* roulang page: category3 */
:root {
            --brand-orange: #FF6A13;
            --brand-orange-hover: #E05500;
            --brand-orange-dark: #CC5500;
            --deep-black: #1A1A1A;
            --dark-bg: #2A2A2A;
            --data-green: #00C853;
            --data-green-light: #E8F5E9;
            --light-gray: #F5F5F5;
            --mid-gray: #EAEAEA;
            --text-body: #333333;
            --text-heading: #111111;
            --text-muted: #777777;
            --text-light: #AAAAAA;
            --white: #FFFFFF;
            --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --card-shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.12);
            --card-radius: 12px;
            --btn-radius: 30px;
            --input-radius: 8px;
            --nav-radius: 40px;
            --section-padding: 80px;
            --section-padding-mobile: 40px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-hero: 48px;
            --font-section-title: 36px;
            --font-card-title: 20px;
            --font-body: 16px;
            --font-small: 14px;
            --max-width: 1200px;
        }

        @media (max-width: 992px) {
            :root {
                --font-hero: 38px;
                --font-section-title: 28px;
                --section-padding: 56px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --font-hero: 30px;
                --font-section-title: 24px;
                --section-padding: 40px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --font-hero: 26px;
                --font-section-title: 21px;
            }
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: var(--font-body);
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--white);
            overflow-x: hidden;
            padding-top: 0;
            margin: 0;
        }
        a {
            color: var(--brand-orange);
            text-decoration: none;
            transition: color var(--transition-normal);
        }
        a:hover {
            color: var(--brand-orange-hover);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        button:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
        }
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 2px;
        }
        section {
            position: relative;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            font-weight: 600;
            line-height: 1.3;
        }
        .section-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== 悬浮胶囊导航 ========== */
        .main-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: 90%;
            max-width: var(--max-width);
            background: rgba(26, 26, 26, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--nav-radius);
            padding: 10px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            transition: all var(--transition-normal);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .main-nav.scrolled {
            background: rgba(26, 26, 26, 0.98);
            box-shadow: 0 8px 36px rgba(0, 0, 0, 0.35);
            top: 8px;
        }
        .nav-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--brand-orange) !important;
            white-space: nowrap;
            letter-spacing: 0.5px;
            text-decoration: none !important;
            transition: opacity var(--transition-normal);
        }
        .nav-logo:hover {
            opacity: 0.85;
            color: var(--brand-orange) !important;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: #CCCCCC;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 24px;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none !important;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.1);
        }
        .nav-links a.active {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.15);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--brand-orange) !important;
            color: #fff !important;
            border-radius: 24px !important;
            padding: 9px 20px !important;
            font-weight: 600 !important;
            font-size: 14px !important;
            transition: all var(--transition-normal) !important;
            border: none;
        }
        .nav-cta-btn:hover {
            background: var(--brand-orange-hover) !important;
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 106, 19, 0.4);
        }
        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 26px;
            padding: 6px 10px;
            border-radius: 8px;
            transition: background var(--transition-fast);
            line-height: 1;
        }
        .nav-hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 768px) {
            .main-nav {
                padding: 10px 18px;
                border-radius: 28px;
                top: 10px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 62px;
                left: 0;
                right: 0;
                background: rgba(26, 26, 26, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: 20px;
                flex-direction: column;
                padding: 20px 16px;
                gap: 4px;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
                border: 1px solid rgba(255, 255, 255, 0.06);
                z-index: 999;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links a {
                font-size: 17px;
                padding: 12px 18px;
                width: 100%;
                text-align: center;
                border-radius: 16px;
                color: #DDD;
            }
            .nav-links a.active {
                background: rgba(255, 106, 19, 0.2);
            }
            .nav-cta-btn {
                width: 100%;
                text-align: center;
                margin-top: 6px;
                padding: 13px 20px !important;
                font-size: 16px !important;
            }
            .nav-hamburger {
                display: block;
            }
        }

        /* ========== 分类页Hero ========== */
        .category-hero {
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            position: relative;
            padding: 120px 20px 60px;
            text-align: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.82) 0%, rgba(26, 26, 26, 0.5) 100%);
            z-index: 1;
        }
        .category-hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }
        .category-hero-content h1 {
            font-size: var(--font-hero);
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .category-hero-content .hero-subtitle {
            font-size: 18px;
            color: #CCCCCC;
            margin-bottom: 28px;
            line-height: 1.6;
            max-width: 650px;
            margin-left: auto;
            margin-right: auto;
        }
        .category-hero-content .hero-cta {
            display: inline-block;
            background: var(--brand-orange);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 14px 36px;
            border-radius: var(--btn-radius);
            transition: all var(--transition-normal);
            text-decoration: none !important;
            border: none;
        }
        .category-hero-content .hero-cta:hover {
            background: var(--brand-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 106, 19, 0.45);
            color: #fff;
        }
        @media (max-width: 768px) {
            .category-hero {
                min-height: 340px;
                padding: 100px 16px 40px;
            }
            .category-hero-content .hero-subtitle {
                font-size: 16px;
            }
        }
        @media (max-width: 520px) {
            .category-hero {
                min-height: 300px;
                padding: 90px 14px 32px;
            }
            .category-hero-content .hero-cta {
                padding: 12px 28px;
                font-size: 15px;
            }
        }

        /* ========== 板块通用 ========== */
        .section-block {
            padding: var(--section-padding) 0;
        }
        .section-block.bg-light {
            background-color: var(--light-gray);
        }
        .section-block.bg-dark {
            background-color: var(--dark-bg);
            color: #DDD;
        }
        .section-block.bg-dark h2,
        .section-block.bg-dark h3 {
            color: #fff;
        }
        .section-title {
            font-size: var(--font-section-title);
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-heading);
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 700px;
        }
        .section-block.bg-dark .section-subtitle {
            color: #BBB;
        }
        @media (max-width: 768px) {
            .section-block {
                padding: var(--section-padding-mobile) 0;
            }
            .section-subtitle {
                margin-bottom: 28px;
                font-size: 15px;
            }
        }

        /* ========== 指标看板 ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .metric-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            border: 1px solid transparent;
        }
        .metric-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 106, 19, 0.15);
        }
        .metric-icon {
            font-size: 36px;
            color: var(--brand-orange);
            margin-bottom: 12px;
        }
        .metric-value {
            font-size: 44px;
            font-weight: 700;
            color: var(--brand-orange);
            line-height: 1;
            margin-bottom: 6px;
        }
        .metric-unit {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
        }
        .metric-label {
            font-size: var(--font-small);
            color: var(--text-muted);
            margin-top: 8px;
        }
        @media (max-width: 992px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .metric-value {
                font-size: 36px;
            }
        }

        /* ========== 服务详情卡片 ========== */
        .service-detail-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .service-detail-grid.reverse {
            direction: rtl;
        }
        .service-detail-grid.reverse>* {
            direction: ltr;
        }
        .service-detail-image {
            border-radius: var(--card-radius);
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }
        .service-detail-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .service-detail-text h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-heading);
        }
        .service-detail-text p {
            font-size: var(--font-body);
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .service-detail-text .feature-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }
        .service-detail-text .feature-list li {
            padding: 6px 0 6px 28px;
            position: relative;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.6;
        }
        .service-detail-text .feature-list li::before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 6px;
            color: var(--data-green);
            font-size: 15px;
        }
        @media (max-width: 768px) {
            .service-detail-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .service-detail-text h3 {
                font-size: 22px;
            }
        }

        /* ========== 场景卡片 ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .scenario-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px 24px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            border-left: 4px solid var(--brand-orange);
            text-align: left;
        }
        .scenario-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
        }
        .scenario-card .scenario-icon {
            font-size: 32px;
            color: var(--brand-orange);
            margin-bottom: 14px;
        }
        .scenario-card h4 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-heading);
        }
        .scenario-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 992px) {
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== 流程步骤 ========== */
        .process-steps {
            display: flex;
            gap: 0;
            align-items: flex-start;
            justify-content: space-between;
            flex-wrap: wrap;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 8%;
            right: 8%;
            height: 2px;
            background: var(--mid-gray);
            z-index: 0;
        }
        .process-step {
            flex: 1;
            min-width: 140px;
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 12px;
        }
        .step-circle {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--brand-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 24px;
            font-weight: 700;
            color: var(--brand-orange);
            transition: all var(--transition-normal);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }
        .process-step:hover .step-circle {
            background: var(--brand-orange);
            color: #fff;
            box-shadow: 0 8px 28px rgba(255, 106, 19, 0.35);
            transform: scale(1.1);
        }
        .process-step h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-heading);
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.5;
            margin: 0;
        }
        @media (max-width: 768px) {
            .process-steps {
                flex-direction: column;
                gap: 20px;
                align-items: center;
            }
            .process-steps::before {
                display: none;
            }
            .process-step {
                max-width: 320px;
                width: 100%;
            }
        }

        /* ========== 对比区块 ========== */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 28px;
            align-items: center;
        }
        .compare-card {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--card-radius);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition-normal);
        }
        .compare-card.before {
            border-left: 4px solid #888;
        }
        .compare-card.after {
            border-left: 4px solid var(--data-green);
            background: rgba(0, 200, 83, 0.06);
            border-color: rgba(0, 200, 83, 0.25);
        }
        .compare-card .compare-label {
            font-size: 14px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
            color: #AAA;
        }
        .compare-card.after .compare-label {
            color: var(--data-green);
        }
        .compare-card .compare-data {
            font-size: 40px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .compare-card.before .compare-data {
            color: #999;
        }
        .compare-card.after .compare-data {
            color: var(--data-green);
        }
        .compare-card .compare-desc {
            font-size: 14px;
            color: #BBB;
            line-height: 1.5;
        }
        .compare-vs {
            font-size: 28px;
            font-weight: 700;
            color: var(--brand-orange);
            text-align: center;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(255, 106, 19, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .compare-vs {
                width: 48px;
                height: 48px;
                font-size: 20px;
                margin: 8px auto;
            }
        }

        /* ========== FAQ手风琴 ========== */
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--mid-gray);
            background: transparent;
            border-radius: 0;
        }
        .accordion-custom .accordion-button {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            background: #fff;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
            border-radius: 0;
            transition: all var(--transition-normal);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--brand-orange);
            background: #FFF8F3;
            box-shadow: none;
        }
        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--brand-orange);
            transition: transform var(--transition-normal);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--brand-orange);
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .accordion-custom .accordion-body {
            font-size: var(--font-body);
            color: var(--text-body);
            line-height: 1.8;
            padding: 16px 20px 24px;
            background: #FFF8F3;
        }
        .section-block.bg-light .accordion-custom .accordion-button {
            background: #fff;
        }
        .section-block.bg-light .accordion-custom .accordion-button:not(.collapsed) {
            background: #FFF8F3;
        }

        /* ========== CTA表单 ========== */
        .cta-section {
            background: linear-gradient(135deg, #FF6A13 0%, #CC5500 100%);
            padding: 60px 0;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .cta-text h2 {
            font-size: var(--font-section-title);
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-text p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.6;
            margin: 0;
        }
        .cta-form-wrapper {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(10px);
            border-radius: var(--card-radius);
            padding: 32px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .cta-form-wrapper .form-control {
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            border-radius: var(--input-radius);
            padding: 12px 16px;
            font-size: 15px;
            transition: all var(--transition-normal);
            margin-bottom: 14px;
        }
        .cta-form-wrapper .form-control::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }
        .cta-form-wrapper .form-control:focus {
            background: rgba(255, 255, 255, 0.22);
            border-color: #fff;
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
            outline: none;
            color: #fff;
        }
        .cta-submit-btn {
            width: 100%;
            background: #fff;
            color: var(--brand-orange);
            font-weight: 700;
            font-size: 17px;
            padding: 13px 24px;
            border-radius: var(--btn-radius);
            border: none;
            transition: all var(--transition-normal);
            cursor: pointer;
        }
        .cta-submit-btn:hover {
            background: #FFE8D6;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
        }
        @media (max-width: 768px) {
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section {
                padding: 40px 0;
            }
            .cta-form-wrapper {
                padding: 24px;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #111;
            color: #AAA;
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #AAA;
            font-size: 14px;
            transition: color var(--transition-normal);
        }
        .footer-col ul li a:hover {
            color: var(--brand-orange);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #888;
        }
        .footer-bottom a {
            color: #AAA;
            font-size: 13px;
        }
        .footer-bottom a:hover {
            color: var(--brand-orange);
        }
        .footer-logo {
            color: var(--brand-orange);
            font-weight: 700;
            font-size: 16px;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        /* ========== 按钮通用 ========== */
        .btn-outline-orange {
            display: inline-block;
            border: 2px solid var(--brand-orange);
            color: var(--brand-orange);
            background: transparent;
            padding: 10px 28px;
            border-radius: var(--btn-radius);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition-normal);
            text-decoration: none !important;
        }
        .btn-outline-orange:hover {
            background: var(--brand-orange);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 106, 19, 0.3);
        }

        /* ========== 技术亮点卡片 ========== */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .tech-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            border-top: 3px solid var(--brand-orange);
        }
        .tech-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
        }
        .tech-card .tech-icon {
            font-size: 40px;
            color: var(--brand-orange);
            margin-bottom: 14px;
        }
        .tech-card h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-heading);
        }
        .tech-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 992px) {
            .tech-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .tech-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --brand-orange: #FF6A13;
            --brand-orange-hover: #E05500;
            --brand-orange-dark: #CC5500;
            --deep-black: #1A1A1A;
            --dark-bg: #2A2A2A;
            --data-green: #00C853;
            --data-green-light: #E8F5E9;
            --light-gray: #F5F5F5;
            --mid-gray: #EAEAEA;
            --text-body: #333333;
            --text-heading: #111111;
            --text-muted: #777777;
            --text-light: #AAAAAA;
            --white: #FFFFFF;
            --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --card-shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.12);
            --card-radius: 12px;
            --btn-radius: 30px;
            --input-radius: 8px;
            --nav-radius: 40px;
            --section-padding: 80px;
            --section-padding-mobile: 40px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-hero: 48px;
            --font-section-title: 36px;
            --font-card-title: 20px;
            --font-body: 16px;
            --font-small: 14px;
            --max-width: 1200px;
        }

        @media (max-width: 992px) {
            :root {
                --font-hero: 38px;
                --font-section-title: 28px;
                --section-padding: 56px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --font-hero: 30px;
                --font-section-title: 24px;
                --section-padding: 40px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --font-hero: 26px;
                --font-section-title: 21px;
            }
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: var(--font-body);
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--white);
            overflow-x: hidden;
            padding-top: 0;
        }

        a {
            color: var(--brand-orange);
            text-decoration: none;
            transition: color var(--transition-normal);
        }

        a:hover {
            color: var(--brand-orange-hover);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
        }

        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 2px;
        }

        section {
            position: relative;
        }

        .section-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 悬浮胶囊导航 ========== */
        .main-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: 90%;
            max-width: var(--max-width);
            background: rgba(26, 26, 26, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--nav-radius);
            padding: 10px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            transition: all var(--transition-normal);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .main-nav.scrolled {
            background: rgba(26, 26, 26, 0.98);
            box-shadow: 0 8px 36px rgba(0, 0, 0, 0.35);
            top: 8px;
        }

        .nav-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--brand-orange) !important;
            white-space: nowrap;
            letter-spacing: 0.5px;
            text-decoration: none !important;
            transition: opacity var(--transition-normal);
        }

        .nav-logo:hover {
            opacity: 0.85;
            color: var(--brand-orange) !important;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .nav-links a {
            color: #CCCCCC;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 24px;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none !important;
            position: relative;
        }

        .nav-links a:hover {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.1);
        }

        .nav-links a.active {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.15);
            font-weight: 600;
        }

        .nav-cta-btn {
            background: var(--brand-orange) !important;
            color: #fff !important;
            border-radius: 24px !important;
            padding: 9px 20px !important;
            font-weight: 600 !important;
            font-size: 14px !important;
            transition: all var(--transition-normal) !important;
            border: none;
        }

        .nav-cta-btn:hover {
            background: var(--brand-orange-hover) !important;
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 106, 19, 0.4);
        }

        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 26px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: all var(--transition-normal);
        }

        .nav-hamburger:hover {
            color: var(--brand-orange);
            background: rgba(255, 255, 255, 0.08);
        }

        @media (max-width: 768px) {
            .main-nav {
                padding: 10px 18px;
                border-radius: 28px;
                top: 10px;
            }
            .nav-links {
                display: none;
                position: fixed;
                top: 0;
                left: 0;
                width: 100vw;
                height: 100vh;
                background: rgba(26, 26, 26, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 16px;
                z-index: 999;
                border-radius: 0;
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links a {
                font-size: 20px;
                padding: 12px 28px;
                color: #ddd;
            }
            .nav-links a.active {
                color: var(--brand-orange);
                background: rgba(255, 106, 19, 0.2);
            }
            .nav-cta-btn {
                font-size: 18px !important;
                padding: 14px 32px !important;
            }
            .nav-hamburger {
                display: block;
                z-index: 1001;
            }
            .nav-logo {
                font-size: 19px;
                z-index: 1001;
                position: relative;
            }
        }

        /* ========== 分类页 Hero ========== */
        .category-hero {
            min-height: 420px;
            display: flex;
            align-items: center;
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-attachment: fixed;
            margin-top: 0;
            padding-top: 100px;
            padding-bottom: 60px;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.85) 0%, rgba(26, 26, 26, 0.5) 60%, rgba(26, 26, 26, 0.75) 100%);
            z-index: 1;
        }

        .category-hero .section-container {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .category-hero-content {
            max-width: 720px;
        }

        .category-hero-content .badge-tag {
            display: inline-block;
            background: rgba(255, 106, 19, 0.25);
            color: var(--brand-orange);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            border: 1px solid rgba(255, 106, 19, 0.3);
        }

        .category-hero-content h1 {
            font-size: var(--font-hero);
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .category-hero-content h1 span {
            color: var(--brand-orange);
        }

        .category-hero-content .hero-subtitle {
            font-size: 18px;
            color: #ccc;
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 580px;
        }

        .category-hero-content .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary-cta {
            display: inline-block;
            background: var(--brand-orange);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 13px 32px;
            border-radius: var(--btn-radius);
            border: none;
            transition: all var(--transition-normal);
            text-decoration: none !important;
            box-shadow: 0 4px 18px rgba(255, 106, 19, 0.4);
        }

        .btn-primary-cta:hover {
            background: var(--brand-orange-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 106, 19, 0.5);
        }

        .btn-outline-cta {
            display: inline-block;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 13px 32px;
            border-radius: var(--btn-radius);
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-normal);
            text-decoration: none !important;
        }

        .btn-outline-cta:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .category-hero {
                min-height: 340px;
                padding-top: 90px;
                padding-bottom: 40px;
                background-attachment: scroll;
            }
            .category-hero-content h1 {
                font-size: var(--font-hero);
            }
            .category-hero-content .hero-subtitle {
                font-size: 16px;
            }
            .btn-primary-cta,
            .btn-outline-cta {
                font-size: 15px;
                padding: 11px 24px;
            }
        }

        @media (max-width: 520px) {
            .category-hero {
                min-height: 300px;
                padding-top: 80px;
                padding-bottom: 32px;
            }
            .category-hero-content .hero-cta-group {
                flex-direction: column;
                gap: 10px;
            }
            .btn-primary-cta,
            .btn-outline-cta {
                width: 100%;
                text-align: center;
            }
        }

        /* ========== 指标看板 ========== */
        .metrics-section {
            padding: var(--section-padding) 0;
            background: var(--white);
        }

        .metrics-section .section-title {
            text-align: center;
            font-size: var(--font-section-title);
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .metrics-section .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: var(--font-body);
            margin-bottom: 48px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .metric-card {
            background: var(--white);
            border-radius: var(--card-radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            border: 1px solid var(--mid-gray);
            position: relative;
            overflow: hidden;
        }

        .metric-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 106, 19, 0.2);
        }

        .metric-card .metric-icon {
            font-size: 36px;
            color: var(--brand-orange);
            margin-bottom: 12px;
        }

        .metric-card .metric-number {
            font-size: 42px;
            font-weight: 700;
            color: var(--brand-orange);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .metric-card .metric-label {
            font-size: var(--font-small);
            color: var(--text-muted);
            font-weight: 500;
        }

        .metric-card .metric-trend {
            display: inline-block;
            font-size: 12px;
            color: var(--data-green);
            font-weight: 600;
            margin-top: 6px;
            background: var(--data-green-light);
            padding: 3px 10px;
            border-radius: 12px;
        }

        @media (max-width: 992px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .metric-card {
                padding: 24px 16px;
            }
            .metric-card .metric-number {
                font-size: 34px;
            }
        }

        /* ========== 服务矩阵 ========== */
        .services-section {
            padding: var(--section-padding) 0;
            background: var(--light-gray);
        }

        .services-section .section-title {
            font-size: var(--font-section-title);
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .services-section .section-intro {
            color: var(--text-muted);
            font-size: var(--font-body);
            margin-bottom: 48px;
            max-width: 650px;
        }

        .services-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr;
            gap: 24px;
        }

        .service-card-large {
            background: var(--white);
            border-radius: var(--card-radius);
            padding: 40px 36px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            border: 1px solid var(--mid-gray);
            display: flex;
            flex-direction: column;
            gap: 16px;
            height: 100%;
        }

        .service-card-large:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
        }

        .service-card-large .service-icon {
            font-size: 48px;
            color: var(--brand-orange);
            margin-bottom: 4px;
        }

        .service-card-large h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0;
        }

        .service-card-large p {
            color: var(--text-body);
            line-height: 1.7;
            margin: 0;
            flex-grow: 1;
        }

        .service-card-large .service-link {
            font-weight: 600;
            color: var(--brand-orange);
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition-normal);
        }

        .service-card-large .service-link:hover {
            gap: 10px;
            color: var(--brand-orange-hover);
        }

        .service-card-small {
            background: var(--white);
            border-radius: var(--card-radius);
            padding: 28px 24px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            border: 1px solid var(--mid-gray);
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .service-card-small:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
        }

        .service-card-small .service-icon-sm {
            font-size: 32px;
            color: var(--brand-orange);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .service-card-small .service-info h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0 0 6px 0;
        }

        .service-card-small .service-info p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
            margin: 0;
        }

        .services-right-col {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        @media (max-width: 992px) {
            .services-grid {
                grid-template-columns: 1fr;
            }
            .services-right-col {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
        }

        @media (max-width: 600px) {
            .services-right-col {
                grid-template-columns: 1fr;
            }
            .service-card-large {
                padding: 28px 20px;
            }
            .service-card-large h3 {
                font-size: 20px;
            }
            .service-card-small {
                padding: 20px 16px;
                flex-direction: column;
                gap: 10px;
            }
        }

        /* ========== 画像维度 ========== */
        .dimensions-section {
            padding: var(--section-padding) 0;
            background: var(--white);
        }

        .dimensions-section .section-title {
            font-size: var(--font-section-title);
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            text-align: center;
        }

        .dimensions-section .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            margin-bottom: 48px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .dimensions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .dimension-card {
            background: var(--light-gray);
            border-radius: var(--card-radius);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-normal);
            border: 1px solid transparent;
            position: relative;
        }

        .dimension-card:hover {
            border-color: var(--brand-orange);
            background: #fff;
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
        }

        .dimension-card .dimension-icon {
            font-size: 40px;
            color: var(--brand-orange);
            margin-bottom: 14px;
        }

        .dimension-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .dimension-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        .dimension-card .dimension-badge {
            display: inline-block;
            background: rgba(255, 106, 19, 0.1);
            color: var(--brand-orange);
            font-size: 11px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            margin-top: 10px;
        }

        @media (max-width: 992px) {
            .dimensions-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .dimensions-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 流程步骤 ========== */
        .process-section {
            padding: var(--section-padding) 0;
            background: var(--dark-bg);
            color: #ddd;
        }

        .process-section .section-title {
            font-size: var(--font-section-title);
            font-weight: 700;
            color: #fff;
            text-align: center;
            margin-bottom: 12px;
        }

        .process-section .section-subtitle {
            text-align: center;
            color: #aaa;
            margin-bottom: 48px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 8%;
            width: 84%;
            height: 2px;
            background: rgba(255, 106, 19, 0.4);
            z-index: 0;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .process-step .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--brand-orange);
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(255, 106, 19, 0.4);
        }

        .process-step h4 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 14px;
            color: #aaa;
            line-height: 1.5;
            margin: 0;
        }

        @media (max-width: 992px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px 16px;
            }
            .process-steps::before {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .process-step {
                display: flex;
                align-items: center;
                gap: 16px;
                text-align: left;
            }
            .process-step .step-number {
                margin: 0;
                flex-shrink: 0;
                width: 44px;
                height: 44px;
                font-size: 18px;
            }
        }

        /* ========== 对比案例 ========== */
        .compare-section {
            padding: var(--section-padding) 0;
            background: var(--white);
        }

        .compare-section .section-title {
            font-size: var(--font-section-title);
            font-weight: 700;
            color: var(--text-heading);
            text-align: center;
            margin-bottom: 12px;
        }

        .compare-section .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            margin-bottom: 48px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .compare-wrapper {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 32px;
            align-items: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .compare-card {
            background: var(--light-gray);
            border-radius: var(--card-radius);
            padding: 36px 28px;
            text-align: center;
            border: 1px solid var(--mid-gray);
            transition: all var(--transition-normal);
        }

        .compare-card.before {
            background: #fafafa;
            border-color: #e0e0e0;
        }

        .compare-card.after {
            background: #fff;
            border-color: var(--data-green);
            box-shadow: 0 0 0 4px rgba(0, 200, 83, 0.08);
        }

        .compare-card .compare-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 14px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .compare-card.before .compare-tag {
            background: #e0e0e0;
            color: #888;
        }

        .compare-card.after .compare-tag {
            background: var(--data-green-light);
            color: var(--data-green);
        }

        .compare-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .compare-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
            text-align: left;
        }

        .compare-card ul li {
            padding: 8px 0;
            font-size: 15px;
            color: var(--text-body);
            border-bottom: 1px solid var(--mid-gray);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .compare-card ul li:last-child {
            border-bottom: none;
        }

        .compare-card ul li i {
            font-size: 14px;
        }

        .compare-card.before ul li i {
            color: #ccc;
        }

        .compare-card.after ul li i {
            color: var(--data-green);
        }

        .compare-vs {
            font-size: 28px;
            font-weight: 900;
            color: var(--brand-orange);
            text-align: center;
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .compare-wrapper {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .compare-vs {
                font-size: 22px;
                padding: 8px 0;
            }
            .compare-card {
                padding: 24px 18px;
            }
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: var(--section-padding) 0;
            background: var(--light-gray);
        }

        .faq-section .section-title {
            font-size: var(--font-section-title);
            font-weight: 700;
            color: var(--text-heading);
            text-align: center;
            margin-bottom: 48px;
        }

        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--card-radius);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
            border: 1px solid var(--mid-gray);
            transition: all var(--transition-normal);
        }

        .faq-item:hover {
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            text-align: left;
            transition: all var(--transition-normal);
            gap: 16px;
        }

        .faq-question:hover {
            color: var(--brand-orange);
        }

        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--brand-orange);
            transition: transform var(--transition-normal);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-normal);
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.7;
            margin: 0;
        }

        @media (max-width: 520px) {
            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* ========== CTA 表单 ========== */
        .cta-section {
            padding: var(--section-padding) 0;
            background: linear-gradient(135deg, #FF6A13 0%, #CC5500 100%);
            color: #fff;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-text h2 {
            font-size: var(--font-section-title);
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }

        .cta-text p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin: 0;
        }

        .cta-text .cta-features {
            list-style: none;
            padding: 0;
            margin: 20px 0 0;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .cta-text .cta-features li {
            background: rgba(255, 255, 255, 0.15);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: #fff;
            white-space: nowrap;
        }

        .cta-form {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-radius: var(--card-radius);
            padding: 36px 32px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .cta-form .form-group {
            margin-bottom: 16px;
        }

        .cta-form label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
        }

        .cta-form input {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--input-radius);
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            font-size: 15px;
            transition: all var(--transition-normal);
        }

        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .cta-form input:focus {
            outline: none;
            border-color: #fff;
            background: rgba(255, 255, 255, 0.22);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.12);
        }

        .cta-form .btn-submit {
            width: 100%;
            padding: 13px 24px;
            border-radius: var(--btn-radius);
            border: none;
            background: #fff;
            color: var(--brand-orange);
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition-normal);
            margin-top: 4px;
        }

        .cta-form .btn-submit:hover {
            background: #f0f0f0;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        @media (max-width: 768px) {
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-form {
                padding: 28px 20px;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #111;
            color: #AAA;
            padding: 56px 0 28px;
        }

        .site-footer .section-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-col h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: #AAA;
            font-size: 14px;
            transition: color var(--transition-normal);
            text-decoration: none;
        }

        .footer-col ul li a:hover {
            color: var(--brand-orange);
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
        }

        .footer-logo {
            color: var(--brand-orange);
            font-weight: 700;
            font-size: 16px;
        }

        .footer-bottom a {
            color: #AAA;
            text-decoration: none;
            transition: color var(--transition-normal);
        }

        .footer-bottom a:hover {
            color: var(--brand-orange);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --brand-orange: #FF6A13;
            --brand-orange-hover: #E05500;
            --brand-orange-dark: #CC5500;
            --deep-black: #1A1A1A;
            --dark-bg: #2A2A2A;
            --data-green: #00C853;
            --data-green-light: #E8F5E9;
            --light-gray: #F5F5F5;
            --mid-gray: #EAEAEA;
            --text-body: #333333;
            --text-heading: #111111;
            --text-muted: #777777;
            --text-light: #AAAAAA;
            --white: #FFFFFF;
            --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --card-shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.12);
            --card-radius: 12px;
            --btn-radius: 30px;
            --input-radius: 8px;
            --nav-radius: 40px;
            --section-padding: 80px;
            --section-padding-mobile: 40px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-hero: 48px;
            --font-section-title: 36px;
            --font-card-title: 20px;
            --font-body: 16px;
            --font-small: 14px;
            --max-width: 1200px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: var(--font-body);
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--white);
            overflow-x: hidden;
            padding-top: 0;
            margin: 0;
        }

        a {
            color: var(--brand-orange);
            text-decoration: none;
            transition: color var(--transition-normal);
        }

        a:hover {
            color: var(--brand-orange-hover);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
        }

        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 2px;
        }

        section {
            position: relative;
        }

        .section-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        .section-padding {
            padding: var(--section-padding) 0;
        }

        .section-title {
            font-size: var(--font-section-title);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: 0.5em;
        }

        .section-subtitle {
            font-size: 18px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1.5em;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .section-title {
            margin-bottom: 12px;
        }

        .section-header .section-subtitle {
            max-width: 700px;
            margin: 0 auto;
        }

        .btn-brand {
            display: inline-block;
            background: var(--brand-orange);
            color: #fff;
            border-radius: var(--btn-radius);
            padding: 14px 32px;
            font-weight: 600;
            font-size: 16px;
            border: none;
            transition: all var(--transition-normal);
            text-align: center;
            cursor: pointer;
            text-decoration: none;
            line-height: 1.4;
        }

        .btn-brand:hover {
            background: var(--brand-orange-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 106, 19, 0.35);
            text-decoration: none;
        }

        .btn-brand-outline {
            display: inline-block;
            background: transparent;
            color: var(--brand-orange);
            border-radius: var(--btn-radius);
            padding: 13px 30px;
            font-weight: 600;
            font-size: 16px;
            border: 2px solid var(--brand-orange);
            transition: all var(--transition-normal);
            text-align: center;
            cursor: pointer;
            text-decoration: none;
            line-height: 1.4;
        }

        .btn-brand-outline:hover {
            background: var(--brand-orange);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 106, 19, 0.3);
            text-decoration: none;
        }

        .btn-white-outline {
            display: inline-block;
            background: transparent;
            color: #fff;
            border-radius: var(--btn-radius);
            padding: 13px 30px;
            font-weight: 600;
            font-size: 16px;
            border: 2px solid rgba(255, 255, 255, 0.7);
            transition: all var(--transition-normal);
            text-align: center;
            cursor: pointer;
            text-decoration: none;
            line-height: 1.4;
        }

        .btn-white-outline:hover {
            background: #fff;
            color: var(--brand-orange);
            border-color: #fff;
            transform: translateY(-2px);
            text-decoration: none;
        }

        .card-elevated {
            background: #fff;
            border-radius: var(--card-radius);
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            border: 1px solid transparent;
            overflow: hidden;
        }

        .card-elevated:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 106, 19, 0.15);
        }

        .badge-tag {
            display: inline-block;
            background: rgba(255, 106, 19, 0.12);
            color: var(--brand-orange);
            border-radius: 20px;
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        .badge-green {
            display: inline-block;
            background: var(--data-green-light);
            color: #00853E;
            border-radius: 20px;
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 600;
        }

        .divider-light {
            border: none;
            border-top: 1px solid var(--mid-gray);
            margin: 0;
        }

        .bg-light-gray {
            background-color: var(--light-gray);
        }

        .bg-dark {
            background-color: var(--dark-bg);
            color: #fff;
        }

        .bg-dark .section-title {
            color: #fff;
        }

        .bg-dark .section-subtitle {
            color: #ccc;
        }

        .text-orange {
            color: var(--brand-orange);
        }

        .text-green {
            color: var(--data-green);
        }

        /* ========== 悬浮胶囊导航 ========== */
        .main-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: 90%;
            max-width: var(--max-width);
            background: rgba(26, 26, 26, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--nav-radius);
            padding: 10px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            transition: all var(--transition-normal);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .main-nav.scrolled {
            background: rgba(26, 26, 26, 0.98);
            box-shadow: 0 8px 36px rgba(0, 0, 0, 0.35);
            top: 8px;
        }

        .nav-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--brand-orange) !important;
            white-space: nowrap;
            letter-spacing: 0.5px;
            text-decoration: none !important;
            transition: opacity var(--transition-normal);
            flex-shrink: 0;
        }

        .nav-logo:hover {
            opacity: 0.85;
            color: var(--brand-orange) !important;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .nav-links a {
            color: #CCCCCC;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 24px;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none !important;
            position: relative;
        }

        .nav-links a:hover {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.1);
        }

        .nav-links a.active {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.15);
            font-weight: 600;
        }

        .nav-cta-btn {
            background: var(--brand-orange) !important;
            color: #fff !important;
            border-radius: 24px !important;
            padding: 9px 20px !important;
            font-weight: 600 !important;
            font-size: 14px !important;
            transition: all var(--transition-normal) !important;
            border: none;
        }

        .nav-cta-btn:hover {
            background: var(--brand-orange-hover) !important;
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 106, 19, 0.4);
        }

        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 26px;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(26, 26, 26, 0.97);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 16px;
            padding: 40px;
        }

        .mobile-menu-overlay.active {
            display: flex;
        }

        .mobile-menu-overlay a {
            color: #fff;
            font-size: 20px;
            font-weight: 500;
            padding: 12px 24px;
            border-radius: 28px;
            transition: all var(--transition-normal);
            text-decoration: none !important;
        }

        .mobile-menu-overlay a:hover,
        .mobile-menu-overlay a.active {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.15);
        }

        .mobile-menu-overlay .nav-cta-btn {
            font-size: 18px !important;
            padding: 14px 28px !important;
            margin-top: 8px;
        }

        .mobile-menu-close {
            position: absolute;
            top: 24px;
            right: 28px;
            background: none;
            border: none;
            color: #fff;
            font-size: 32px;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .mobile-menu-close:hover {
            color: var(--brand-orange);
        }

        /* ========== Hero ========== */
        .hero-section {
            min-height: 600px;
            display: flex;
            align-items: center;
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            padding: 120px 0 80px;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.85) 0%, rgba(26, 26, 26, 0.5) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 20px;
        }

        .hero-badge-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 28px;
            padding: 8px 18px;
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            backdrop-filter: blur(8px);
        }

        .hero-badge-item i {
            color: var(--data-green);
            font-size: 14px;
        }

        .hero-title {
            font-size: var(--font-hero);
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .hero-title .highlight {
            color: var(--brand-orange);
        }

        .hero-desc {
            font-size: 18px;
            color: #ccc;
            line-height: 1.6;
            margin-bottom: 28px;
            max-width: 600px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .hero-qualification {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #bbb;
            font-size: 14px;
            margin-top: 16px;
        }

        .hero-qualification i {
            color: var(--data-green);
        }

        /* ========== 指标看板 ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .metric-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--brand-orange);
            opacity: 0;
            transition: opacity var(--transition-normal);
        }

        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-shadow-hover);
        }

        .metric-card:hover::before {
            opacity: 1;
        }

        .metric-number {
            font-size: 42px;
            font-weight: 700;
            color: var(--brand-orange);
            line-height: 1.1;
            margin-bottom: 6px;
            letter-spacing: -1px;
        }

        .metric-unit {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
        }

        .metric-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ========== 功能矩阵 ========== */
        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .feature-card-large {
            grid-row: span 2;
            background: #fff;
            border-radius: var(--card-radius);
            box-shadow: var(--card-shadow);
            padding: 36px 32px;
            transition: all var(--transition-normal);
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .feature-card-large:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(255, 106, 19, 0.15);
        }

        .feature-card {
            background: #fff;
            border-radius: var(--card-radius);
            box-shadow: var(--card-shadow);
            padding: 28px 24px;
            transition: all var(--transition-normal);
            border: 1px solid transparent;
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .feature-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(255, 106, 19, 0.15);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(255, 106, 19, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--brand-orange);
            flex-shrink: 0;
        }

        .feature-card-large .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            font-size: 28px;
            margin-bottom: 16px;
        }

        .feature-info h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .feature-info p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .feature-card-large .feature-info h4 {
            font-size: 22px;
            margin-bottom: 10px;
        }

        .feature-card-large .feature-info p {
            font-size: 15px;
        }

        .feature-image-wrap {
            margin-top: 20px;
            border-radius: 10px;
            overflow: hidden;
        }

        .feature-image-wrap img {
            width: 100%;
            height: auto;
            border-radius: 10px;
            transition: transform var(--transition-slow);
        }

        .feature-card-large:hover .feature-image-wrap img {
            transform: scale(1.03);
        }

        /* ========== 场景卡片 ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scenario-card {
            background: #fff;
            border-radius: var(--card-radius);
            box-shadow: var(--card-shadow);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition-normal);
            border: 1px solid transparent;
            position: relative;
        }

        .scenario-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 106, 19, 0.2);
        }

        .scenario-icon-circle {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: rgba(255, 106, 19, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 30px;
            color: var(--brand-orange);
            transition: all var(--transition-normal);
        }

        .scenario-card:hover .scenario-icon-circle {
            background: var(--brand-orange);
            color: #fff;
            transform: scale(1.05);
        }

        .scenario-card h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .scenario-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== 对比区块 ========== */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 20px;
            align-items: center;
        }

        .compare-card {
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--card-radius);
            padding: 32px 28px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition-normal);
        }

        .compare-card.before {
            border-left: 3px solid #666;
        }

        .compare-card.after {
            border-left: 3px solid var(--data-green);
            background: rgba(0, 200, 83, 0.06);
        }

        .compare-label {
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
        }

        .compare-card.before .compare-label {
            background: rgba(255, 255, 255, 0.08);
            color: #999;
        }

        .compare-card.after .compare-label {
            background: rgba(0, 200, 83, 0.2);
            color: var(--data-green);
        }

        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-list li {
            padding: 8px 0;
            font-size: 15px;
            color: #ccc;
            display: flex;
            align-items: center;
            gap: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .compare-list li:last-child {
            border-bottom: none;
        }

        .compare-card.before .compare-list li i {
            color: #888;
        }

        .compare-card.after .compare-list li {
            color: #e0e0e0;
        }

        .compare-card.after .compare-list li i {
            color: var(--data-green);
        }

        .compare-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--brand-orange);
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            flex-shrink: 0;
            box-shadow: 0 4px 20px rgba(255, 106, 19, 0.4);
        }

        /* ========== 品牌介绍 ========== */
        .brand-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .brand-intro-image {
            border-radius: var(--card-radius);
            overflow: hidden;
            box-shadow: var(--card-shadow-hover);
        }

        .brand-intro-image img {
            width: 100%;
            height: auto;
            border-radius: var(--card-radius);
        }

        .brand-intro-text .highlight-first {
            font-size: 22px;
            font-weight: 600;
            color: var(--brand-orange);
            line-height: 1.5;
            margin-bottom: 14px;
            display: block;
        }

        .brand-intro-text p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        /* ========== 流程 ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .process-step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--brand-orange);
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(255, 106, 19, 0.3);
            transition: all var(--transition-normal);
        }

        .process-step:hover .process-step-number {
            transform: scale(1.1);
            box-shadow: 0 6px 24px rgba(255, 106, 19, 0.45);
        }

        .process-step h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.5;
            margin: 0;
        }

        .process-connector {
            position: absolute;
            top: 28px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--mid-gray);
            z-index: 0;
        }

        /* ========== FAQ ========== */
        .accordion-faq .accordion-item {
            border: none;
            border-bottom: 1px solid var(--mid-gray);
            border-radius: 0;
            background: transparent;
            margin-bottom: 0;
        }

        .accordion-faq .accordion-button {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            background: transparent;
            border: none;
            box-shadow: none;
            padding: 20px 0;
            transition: all var(--transition-normal);
            border-radius: 0;
        }

        .accordion-faq .accordion-button:not(.collapsed) {
            color: var(--brand-orange);
            background: transparent;
            box-shadow: none;
        }

        .accordion-faq .accordion-button::after {
            background-image: none;
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 18px;
            color: var(--brand-orange);
            transition: transform var(--transition-normal);
        }

        .accordion-faq .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--brand-orange);
        }

        .accordion-faq .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .accordion-faq .accordion-body {
            padding: 0 0 20px;
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            background: transparent;
        }

        .accordion-faq .accordion-collapse {
            background: #fafafa;
            border-radius: 0 0 8px 8px;
        }

        /* ========== CTA表单 ========== */
        .cta-section {
            background: linear-gradient(135deg, #FF6A13 0%, #CC5500 100%);
            padding: var(--section-padding) 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .cta-info h2 {
            font-size: var(--font-section-title);
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .cta-info p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .cta-form-wrap {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            border-radius: var(--card-radius);
            padding: 32px 28px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .cta-form-wrap input {
            width: 100%;
            padding: 13px 16px;
            border-radius: var(--input-radius);
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 15px;
            transition: all var(--transition-normal);
            margin-bottom: 12px;
        }

        .cta-form-wrap input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .cta-form-wrap input:focus {
            outline: none;
            border-color: #fff;
            background: rgba(255, 255, 255, 0.15);
            box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.1);
        }

        .cta-form-wrap .btn-submit {
            width: 100%;
            padding: 14px;
            background: #fff;
            color: var(--brand-orange);
            border: none;
            border-radius: var(--btn-radius);
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition-normal);
            margin-top: 4px;
        }

        .cta-form-wrap .btn-submit:hover {
            background: #f5f5f5;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #111;
            color: #AAA;
            padding: 56px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-col h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: #AAA;
            font-size: 14px;
            transition: color var(--transition-normal);
            text-decoration: none;
        }

        .footer-col ul li a:hover {
            color: var(--brand-orange);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
            color: #888;
        }

        .footer-bottom a {
            color: #AAA;
            font-size: 13px;
            transition: color var(--transition-normal);
        }

        .footer-bottom a:hover {
            color: var(--brand-orange);
        }

        .footer-logo {
            font-weight: 700;
            color: var(--brand-orange);
            font-size: 16px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1200px) {
            :root {
                --font-hero: 38px;
                --font-section-title: 28px;
                --section-padding: 56px;
            }
            .nav-links a {
                font-size: 13px;
                padding: 6px 10px;
            }
            .nav-logo {
                font-size: 18px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .feature-card-large {
                grid-row: auto;
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .compare-vs {
                width: 48px;
                height: 48px;
                font-size: 15px;
                margin: 8px auto;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .process-connector {
                display: none;
            }
            .brand-intro-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --font-hero: 30px;
                --font-section-title: 24px;
                --section-padding: 40px;
            }
            .main-nav {
                padding: 10px 18px;
                border-radius: 32px;
                top: 10px;
            }
            .nav-links {
                display: none;
            }
            .nav-hamburger {
                display: block;
            }
            .nav-logo {
                font-size: 17px;
            }
            .hero-section {
                min-height: 480px;
                padding: 100px 0 50px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .hero-badges {
                gap: 8px;
            }
            .hero-badge-item {
                font-size: 12px;
                padding: 6px 12px;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .metric-number {
                font-size: 32px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .compare-vs {
                margin: 8px auto;
            }
            .brand-intro-grid {
                grid-template-columns: 1fr;
            }
            .cta-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-padding {
                padding: var(--section-padding-mobile) 0;
            }
        }

        @media (max-width: 520px) {
            :root {
                --font-hero: 26px;
                --font-section-title: 21px;
            }
            .hero-section {
                min-height: 420px;
                padding: 90px 0 40px;
            }
            .hero-title {
                font-size: 24px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-brand,
            .hero-actions .btn-white-outline {
                text-align: center;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .metric-card {
                padding: 20px 16px;
            }
            .metric-number {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-form-wrap {
                padding: 22px 18px;
            }
            .accordion-faq .accordion-button {
                font-size: 16px;
                padding: 16px 0;
            }
            .main-nav {
                width: 94%;
                border-radius: 28px;
                padding: 8px 14px;
                top: 8px;
            }
            .nav-logo {
                font-size: 15px;
            }
            .nav-hamburger {
                font-size: 22px;
            }
        }

/* roulang page: category4 */
/* ========== 设计系统变量 ========== */
        :root {
            --brand-orange: #FF6A13;
            --brand-orange-hover: #E05500;
            --brand-orange-dark: #CC5500;
            --deep-black: #1A1A1A;
            --dark-bg: #2A2A2A;
            --data-green: #00C853;
            --data-green-light: #E8F5E9;
            --light-gray: #F5F5F5;
            --mid-gray: #EAEAEA;
            --text-body: #333333;
            --text-heading: #111111;
            --text-muted: #777777;
            --text-light: #AAAAAA;
            --white: #FFFFFF;
            --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --card-shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.12);
            --card-radius: 12px;
            --btn-radius: 30px;
            --input-radius: 8px;
            --nav-radius: 40px;
            --section-padding: 80px;
            --section-padding-mobile: 40px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-hero: 48px;
            --font-section-title: 36px;
            --font-card-title: 20px;
            --font-body: 16px;
            --font-small: 14px;
            --max-width: 1200px;
        }

        /* ========== 全局重置与基础样式 ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: var(--font-body);
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--white);
            overflow-x: hidden;
            padding-top: 0;
            margin: 0;
        }

        a {
            color: var(--brand-orange);
            text-decoration: none;
            transition: color var(--transition-normal);
        }
        a:hover {
            color: var(--brand-orange-hover);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }
        button:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
        }

        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 2px;
        }

        section {
            position: relative;
        }

        .section-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: var(--section-padding) 20px;
        }

        /* ========== 悬浮胶囊导航 ========== */
        .main-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: 90%;
            max-width: var(--max-width);
            background: rgba(26, 26, 26, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--nav-radius);
            padding: 10px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            transition: all var(--transition-normal);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .main-nav.scrolled {
            background: rgba(26, 26, 26, 0.98);
            box-shadow: 0 8px 36px rgba(0, 0, 0, 0.35);
            top: 8px;
        }
        .nav-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--brand-orange) !important;
            white-space: nowrap;
            letter-spacing: 0.5px;
            text-decoration: none !important;
            transition: opacity var(--transition-normal);
        }
        .nav-logo:hover {
            opacity: 0.85;
            color: var(--brand-orange) !important;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: #CCCCCC;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 24px;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none !important;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.1);
        }
        .nav-links a.active {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.15);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--brand-orange) !important;
            color: #fff !important;
            border-radius: 24px !important;
            padding: 9px 20px !important;
            font-weight: 600 !important;
            font-size: 14px !important;
            transition: all var(--transition-normal) !important;
            border: none;
        }
        .nav-cta-btn:hover {
            background: var(--brand-orange-hover) !important;
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 106, 19, 0.4);
        }
        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 26px;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: all var(--transition-normal);
            line-height: 1;
        }
        .nav-hamburger:hover {
            color: var(--brand-orange);
            background: rgba(255, 255, 255, 0.08);
        }

        /* ========== Hero 区域 ========== */
        .hero-section {
            min-height: 620px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            position: relative;
            padding: 120px 20px 80px;
            text-align: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.85) 0%, rgba(26, 26, 26, 0.5) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            width: 100%;
        }
        .hero-content h1 {
            font-size: var(--font-hero);
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .hero-content .hero-subtitle {
            font-size: 18px;
            color: #CCCCCC;
            margin-bottom: 32px;
            line-height: 1.6;
        }
        .hero-search-wrap {
            display: flex;
            max-width: 560px;
            margin: 0 auto 28px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: var(--btn-radius);
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
        }
        .hero-search-wrap input {
            flex: 1;
            border: none;
            padding: 14px 20px;
            font-size: 16px;
            color: var(--text-body);
            background: transparent;
            outline: none;
            border-radius: var(--btn-radius) 0 0 var(--btn-radius);
        }
        .hero-search-wrap input::placeholder {
            color: #999;
        }
        .hero-search-wrap button {
            background: var(--brand-orange);
            border: none;
            color: #fff;
            padding: 14px 28px;
            font-weight: 600;
            font-size: 16px;
            border-radius: 0 var(--btn-radius) var(--btn-radius) 0;
            transition: all var(--transition-normal);
            white-space: nowrap;
        }
        .hero-search-wrap button:hover {
            background: var(--brand-orange-hover);
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .hero-tags a {
            display: inline-block;
            padding: 8px 18px;
            background: rgba(255, 255, 255, 0.12);
            color: #E0E0E0;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition-normal);
            border: 1px solid rgba(255, 255, 255, 0.2);
            text-decoration: none !important;
        }
        .hero-tags a:hover {
            background: rgba(255, 106, 19, 0.3);
            border-color: var(--brand-orange);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ========== 通用Section标题 ========== */
        .section-title {
            font-size: var(--font-section-title);
            font-weight: 700;
            color: var(--text-heading);
            text-align: center;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 48px;
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        /* ========== 卡片样式 ========== */
        .card-custom {
            background: #fff;
            border-radius: var(--card-radius);
            box-shadow: var(--card-shadow);
            padding: 28px 24px;
            transition: all var(--transition-slow);
            border: 1px solid transparent;
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .card-custom:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 106, 19, 0.15);
        }
        .card-custom .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(255, 106, 19, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--brand-orange);
            margin-bottom: 16px;
            transition: all var(--transition-normal);
        }
        .card-custom:hover .card-icon {
            background: var(--brand-orange);
            color: #fff;
            transform: scale(1.05);
        }
        .card-custom h4 {
            font-size: var(--font-card-title);
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card-custom p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 按钮样式 ========== */
        .btn-brand {
            display: inline-block;
            background: var(--brand-orange);
            color: #fff !important;
            border-radius: var(--btn-radius);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 16px;
            border: none;
            transition: all var(--transition-normal);
            text-decoration: none !important;
            cursor: pointer;
            text-align: center;
        }
        .btn-brand:hover {
            background: var(--brand-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 106, 19, 0.35);
            color: #fff !important;
        }
        .btn-outline-brand {
            display: inline-block;
            background: transparent;
            color: var(--brand-orange) !important;
            border-radius: var(--btn-radius);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 16px;
            border: 2px solid var(--brand-orange);
            transition: all var(--transition-normal);
            text-decoration: none !important;
            cursor: pointer;
            text-align: center;
        }
        .btn-outline-brand:hover {
            background: var(--brand-orange);
            color: #fff !important;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 106, 19, 0.3);
        }
        .btn-lg-brand {
            padding: 16px 36px;
            font-size: 18px;
            border-radius: 36px;
        }

        /* ========== 指标看板 ========== */
        .metric-card {
            text-align: center;
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px 20px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-slow);
            height: 100%;
        }
        .metric-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--card-shadow-hover);
        }
        .metric-card .metric-number {
            font-size: 44px;
            font-weight: 700;
            color: var(--brand-orange);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .metric-card .metric-unit {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
        }
        .metric-card .metric-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ========== 流程步骤 ========== */
        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 0;
            position: relative;
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--brand-orange);
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            z-index: 2;
        }
        .step-content h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .step-content p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.6;
            margin: 0;
        }

        /* ========== 对比区块 ========== */
        .compare-card {
            border-radius: var(--card-radius);
            padding: 32px 24px;
            height: 100%;
            transition: all var(--transition-slow);
        }
        .compare-card.before {
            background: #f9f9f9;
            border: 1px solid #e0e0e0;
        }
        .compare-card.after {
            background: #fff;
            border: 2px solid var(--data-green);
            box-shadow: 0 4px 24px rgba(0, 200, 83, 0.12);
        }
        .compare-card .compare-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 16px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .compare-card.before .compare-tag {
            background: #eee;
            color: #888;
        }
        .compare-card.after .compare-tag {
            background: var(--data-green-light);
            color: #00A844;
        }
        .compare-card .compare-value {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .compare-card.before .compare-value {
            color: #999;
        }
        .compare-card.after .compare-value {
            color: var(--data-green);
        }
        .compare-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin: 0;
            line-height: 1.6;
        }

        /* ========== FAQ手风琴 ========== */
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid #eee;
            border-radius: 0;
            background: transparent;
        }
        .accordion-custom .accordion-button {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            background: #fff;
            padding: 20px 16px;
            border: none;
            box-shadow: none;
            border-radius: 0;
            transition: all var(--transition-normal);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--brand-orange);
            background: #fafafa;
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--brand-orange);
            transition: transform var(--transition-normal);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--brand-orange);
        }
        .accordion-custom .accordion-body {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            padding: 8px 16px 24px;
            background: #fafafa;
        }

        /* ========== CTA表单区块 ========== */
        .cta-section {
            background: linear-gradient(135deg, #FF6A13 0%, #CC5500 100%);
            border-radius: 0;
            padding: 60px 20px;
        }
        .cta-section .cta-title {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-section .cta-subtitle {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .cta-form input {
            border-radius: var(--input-radius);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 12px 16px;
            font-size: 15px;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            transition: all var(--transition-normal);
            width: 100%;
        }
        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .cta-form input:focus {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.18);
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.15);
        }
        .cta-form .btn-submit {
            background: #fff;
            color: var(--brand-orange-dark);
            border: none;
            border-radius: var(--btn-radius);
            padding: 12px 32px;
            font-weight: 700;
            font-size: 16px;
            transition: all var(--transition-normal);
            width: 100%;
            cursor: pointer;
        }
        .cta-form .btn-submit:hover {
            background: #f5f5f5;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #111;
            color: #AAA;
            padding: 48px 20px 28px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            max-width: var(--max-width);
            margin: 0 auto 32px;
        }
        .site-footer .footer-col h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: #AAA;
            font-size: 14px;
            transition: color var(--transition-normal);
            text-decoration: none;
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--brand-orange);
        }
        .site-footer .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #888;
        }
        .site-footer .footer-bottom a {
            color: #AAA;
            text-decoration: none;
            transition: color var(--transition-normal);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--brand-orange);
        }
        .footer-logo {
            font-weight: 700;
            color: var(--brand-orange);
            font-size: 17px;
        }

        /* ========== 内容资源卡片 ========== */
        .resource-card {
            background: #fff;
            border-radius: var(--card-radius);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-slow);
            height: 100%;
        }
        .resource-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
        }
        .resource-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .resource-card .resource-body {
            padding: 20px;
        }
        .resource-card .resource-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .resource-card .resource-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .resource-card .resource-body .resource-meta {
            font-size: 12px;
            color: #aaa;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .resource-card .resource-body .resource-link {
            display: inline-block;
            font-weight: 600;
            font-size: 14px;
            color: var(--brand-orange);
            margin-top: 8px;
            transition: all var(--transition-normal);
        }
        .resource-card .resource-body .resource-link:hover {
            color: var(--brand-orange-hover);
        }
        .resource-card .resource-body .resource-link i {
            margin-left: 4px;
            font-size: 12px;
            transition: transform var(--transition-fast);
        }
        .resource-card:hover .resource-body .resource-link i {
            transform: translateX(3px);
        }

        /* ========== 响应式设计 ========== */
        @media (max-width: 1200px) {
            :root {
                --font-hero: 38px;
                --font-section-title: 28px;
                --section-padding: 56px;
            }
            .section-container {
                padding: var(--section-padding) 20px;
            }
        }
        @media (max-width: 992px) {
            :root {
                --font-hero: 30px;
                --font-section-title: 24px;
                --section-padding: 40px;
            }
            .section-container {
                padding: var(--section-padding) 16px;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .hero-section {
                min-height: 500px;
                padding: 100px 16px 60px;
            }
            .cta-section .cta-title {
                font-size: 26px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --font-hero: 26px;
                --font-section-title: 21px;
            }
            .main-nav {
                padding: 10px 16px;
                border-radius: 28px;
                top: 10px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 8px);
                left: 0;
                right: 0;
                background: rgba(26, 26, 26, 0.98);
                border-radius: 20px;
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
                border: 1px solid rgba(255, 255, 255, 0.08);
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                font-size: 16px;
                width: 100%;
                text-align: center;
            }
            .nav-hamburger {
                display: block;
            }
            .hero-section {
                min-height: 440px;
                padding: 100px 14px 50px;
            }
            .hero-search-wrap {
                flex-direction: column;
                border-radius: var(--card-radius);
            }
            .hero-search-wrap input {
                border-radius: var(--card-radius) var(--card-radius) 0 0;
            }
            .hero-search-wrap button {
                border-radius: 0 0 var(--card-radius) var(--card-radius);
                padding: 12px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .section-container {
                padding: 32px 14px;
            }
            .metric-card .metric-number {
                font-size: 32px;
            }
            .compare-card .compare-value {
                font-size: 28px;
            }
            .cta-section {
                padding: 40px 14px;
            }
            .cta-section .cta-title {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --font-hero: 22px;
                --font-section-title: 19px;
            }
            .hero-section {
                min-height: 380px;
                padding: 90px 12px 40px;
            }
            .hero-tags a {
                font-size: 12px;
                padding: 6px 12px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .card-custom {
                padding: 20px 16px;
            }
            .resource-card img {
                height: 160px;
            }
            .section-container {
                padding: 28px 12px;
            }
        }

/* roulang page: category5 */
:root {
            --brand-orange: #FF6A13;
            --brand-orange-hover: #E05500;
            --brand-orange-dark: #CC5500;
            --deep-black: #1A1A1A;
            --dark-bg: #2A2A2A;
            --data-green: #00C853;
            --data-green-light: #E8F5E9;
            --light-gray: #F5F5F5;
            --mid-gray: #EAEAEA;
            --text-body: #333333;
            --text-heading: #111111;
            --text-muted: #777777;
            --text-light: #AAAAAA;
            --white: #FFFFFF;
            --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --card-shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.12);
            --card-radius: 12px;
            --btn-radius: 30px;
            --input-radius: 8px;
            --nav-radius: 40px;
            --section-padding: 80px;
            --section-padding-mobile: 40px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-hero: 48px;
            --font-section-title: 36px;
            --font-card-title: 20px;
            --font-body: 16px;
            --font-small: 14px;
            --max-width: 1200px;
        }

        @media (max-width: 992px) {
            :root {
                --font-hero: 38px;
                --font-section-title: 28px;
                --section-padding: 56px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --font-hero: 30px;
                --font-section-title: 24px;
                --section-padding: 40px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --font-hero: 26px;
                --font-section-title: 21px;
            }
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: var(--font-body);
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--white);
            overflow-x: hidden;
            padding-top: 0;
        }
        a {
            color: var(--brand-orange);
            text-decoration: none;
            transition: color var(--transition-normal);
        }
        a:hover {
            color: var(--brand-orange-hover);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        button:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
        }
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 2px;
        }
        section {
            position: relative;
        }

        /* ========== 悬浮胶囊导航 ========== */
        .main-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: 90%;
            max-width: var(--max-width);
            background: rgba(26, 26, 26, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--nav-radius);
            padding: 10px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            transition: all var(--transition-normal);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .main-nav.scrolled {
            background: rgba(26, 26, 26, 0.98);
            box-shadow: 0 8px 36px rgba(0, 0, 0, 0.35);
            top: 8px;
        }
        .nav-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--brand-orange) !important;
            white-space: nowrap;
            letter-spacing: 0.5px;
            text-decoration: none !important;
            transition: opacity var(--transition-normal);
        }
        .nav-logo:hover {
            opacity: 0.85;
            color: var(--brand-orange) !important;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: #CCCCCC;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 24px;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none !important;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.1);
        }
        .nav-links a.active {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.15);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--brand-orange) !important;
            color: #fff !important;
            border-radius: 24px !important;
            padding: 9px 20px !important;
            font-weight: 600 !important;
            font-size: 14px !important;
            transition: all var(--transition-normal) !important;
            border: none;
        }
        .nav-cta-btn:hover {
            background: var(--brand-orange-hover) !important;
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 106, 19, 0.4);
        }
        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 26px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: all var(--transition-normal);
        }
        .nav-hamburger:hover {
            color: var(--brand-orange);
            background: rgba(255, 255, 255, 0.06);
        }
        @media (max-width: 768px) {
            .main-nav {
                padding: 10px 18px;
                border-radius: 28px;
                top: 10px;
            }
            .nav-links {
                display: none;
                position: fixed;
                top: 70px;
                left: 5%;
                width: 90%;
                background: rgba(26, 26, 26, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: 20px;
                flex-direction: column;
                padding: 20px;
                gap: 4px;
                box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
                z-index: 999;
                border: 1px solid rgba(255, 255, 255, 0.1);
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links a {
                font-size: 17px;
                padding: 12px 18px;
                width: 100%;
                text-align: center;
                border-radius: 14px;
            }
            .nav-hamburger {
                display: block;
            }
            .nav-cta-btn {
                margin-top: 6px;
                width: 100%;
                text-align: center;
                padding: 12px 20px !important;
                font-size: 16px !important;
            }
        }
        @media (max-width: 520px) {
            .main-nav {
                width: 94%;
                border-radius: 22px;
                padding: 8px 14px;
                top: 6px;
            }
            .nav-logo {
                font-size: 18px;
            }
            .nav-links {
                top: 56px;
                left: 3%;
                width: 94%;
                border-radius: 16px;
                padding: 14px;
            }
            .nav-links a {
                font-size: 15px;
                padding: 10px 14px;
            }
        }

        /* ========== 分类页Hero ========== */
        .category-hero {
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            position: relative;
            padding: 120px 20px 60px;
            text-align: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.82) 0%, rgba(26, 26, 26, 0.55) 100%);
            z-index: 1;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }
        .category-hero .hero-badge {
            display: inline-block;
            background: rgba(255, 106, 19, 0.25);
            color: var(--brand-orange);
            border: 1px solid rgba(255, 106, 19, 0.4);
            border-radius: 20px;
            padding: 6px 18px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .category-hero h1 {
            font-size: var(--font-hero);
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .category-hero .hero-subtitle {
            font-size: 18px;
            color: #CCCCCC;
            line-height: 1.6;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .category-hero .hero-cta-row {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .category-hero {
                min-height: 340px;
                padding: 100px 16px 40px;
            }
            .category-hero .hero-subtitle {
                font-size: 16px;
            }
        }
        @media (max-width: 520px) {
            .category-hero {
                min-height: 300px;
                padding: 90px 14px 32px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero .hero-subtitle {
                font-size: 15px;
            }
        }

        /* ========== 通用Section ========== */
        .section-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-padding {
            padding: var(--section-padding) 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: var(--section-padding-mobile) 0;
            }
            .section-container {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .section-container {
                padding: 0 12px;
            }
        }

        .section-title {
            font-size: var(--font-section-title);
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 40px;
            max-width: 680px;
        }
        .section-title.center,
        .section-subtitle.center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 768px) {
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 28px;
            }
        }

        /* ========== 按钮 ========== */
        .btn-brand {
            display: inline-block;
            background: var(--brand-orange);
            color: #fff !important;
            border-radius: var(--btn-radius);
            padding: 13px 32px;
            font-weight: 600;
            font-size: 16px;
            border: none;
            transition: all var(--transition-normal);
            text-align: center;
            box-shadow: 0 4px 16px rgba(255, 106, 19, 0.3);
        }
        .btn-brand:hover {
            background: var(--brand-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 106, 19, 0.45);
            color: #fff !important;
        }
        .btn-brand-outline {
            display: inline-block;
            background: transparent;
            color: var(--brand-orange);
            border: 2px solid var(--brand-orange);
            border-radius: var(--btn-radius);
            padding: 11px 30px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition-normal);
            text-align: center;
        }
        .btn-brand-outline:hover {
            background: var(--brand-orange);
            color: #fff !important;
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(255, 106, 19, 0.35);
        }
        .btn-white-outline {
            display: inline-block;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
            border-radius: var(--btn-radius);
            padding: 11px 30px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition-normal);
            text-align: center;
        }
        .btn-white-outline:hover {
            background: #fff;
            color: var(--deep-black);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ========== 指标看板 ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--white);
            border-radius: var(--card-radius);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-slow);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }
        .metric-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 106, 19, 0.15);
        }
        .metric-card .metric-icon {
            font-size: 36px;
            color: var(--brand-orange);
            margin-bottom: 12px;
            display: block;
        }
        .metric-card .metric-number {
            font-size: 42px;
            font-weight: 700;
            color: var(--brand-orange);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .metric-card .metric-label {
            font-size: var(--font-small);
            color: var(--text-muted);
            font-weight: 500;
        }
        @media (max-width: 992px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .metric-card {
                padding: 22px 16px;
            }
            .metric-card .metric-number {
                font-size: 34px;
            }
        }

        /* ========== 对比展示卡片 ========== */
        .comparison-row {
            display: grid;
            grid-template-columns: 1fr 80px 1fr;
            gap: 0;
            align-items: stretch;
            background: var(--dark-bg);
            border-radius: var(--card-radius);
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }
        .comparison-col {
            padding: 36px 28px;
            text-align: center;
        }
        .comparison-col.before {
            background: rgba(255, 255, 255, 0.04);
        }
        .comparison-col.after {
            background: rgba(0, 200, 83, 0.08);
            border-left: 1px solid rgba(255, 255, 255, 0.1);
        }
        .comparison-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 106, 19, 0.2);
            font-weight: 700;
            font-size: 20px;
            color: var(--brand-orange);
            letter-spacing: 1px;
        }
        .comparison-col .comp-label {
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 14px;
        }
        .comparison-col.before .comp-label {
            color: #999;
        }
        .comparison-col.after .comp-label {
            color: var(--data-green);
        }
        .comparison-col .comp-value {
            font-size: 38px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .comparison-col.after .comp-value {
            color: var(--data-green);
        }
        .comparison-col .comp-desc {
            font-size: 14px;
            color: #BBB;
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .comparison-row {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .comparison-vs {
                padding: 16px;
                font-size: 18px;
            }
            .comparison-col {
                padding: 24px 18px;
            }
            .comparison-col.after {
                border-left: none;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
            }
            .comparison-col .comp-value {
                font-size: 30px;
            }
        }

        /* ========== 场景卡片 ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .scenario-card {
            background: var(--white);
            border-radius: var(--card-radius);
            padding: 30px 24px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-slow);
            border: 1px solid transparent;
            text-align: center;
            position: relative;
        }
        .scenario-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(255, 106, 19, 0.2);
        }
        .scenario-card .scenario-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(255, 106, 19, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 28px;
            color: var(--brand-orange);
        }
        .scenario-card h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .scenario-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 992px) {
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .scenario-card {
                padding: 22px 16px;
            }
        }

        /* ========== 流程步骤 ========== */
        .steps-flow {
            display: flex;
            gap: 0;
            align-items: flex-start;
            flex-wrap: nowrap;
            position: relative;
        }
        .step-item {
            flex: 1;
            text-align: center;
            padding: 0 16px;
            position: relative;
        }
        .step-item::after {
            content: '';
            position: absolute;
            top: 28px;
            left: calc(50% + 28px);
            width: calc(100% - 56px);
            height: 2px;
            background: var(--mid-gray);
            z-index: 0;
        }
        .step-item:last-child::after {
            display: none;
        }
        .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--brand-orange);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 20px;
            margin: 0 auto 14px;
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 16px rgba(255, 106, 19, 0.35);
        }
        .step-item h5 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
            margin: 0;
        }
        @media (max-width: 768px) {
            .steps-flow {
                flex-direction: column;
                gap: 20px;
            }
            .step-item {
                display: flex;
                align-items: flex-start;
                gap: 16px;
                text-align: left;
                padding: 0;
            }
            .step-item::after {
                display: none;
            }
            .step-circle {
                flex-shrink: 0;
                margin: 0;
                width: 48px;
                height: 48px;
                font-size: 18px;
            }
            .step-item h5 {
                margin-top: 4px;
            }
        }

        /* ========== 图文区块 ========== */
        .image-text-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .image-text-block.reverse {
            direction: rtl;
        }
        .image-text-block.reverse>* {
            direction: ltr;
        }
        .image-text-block .it-image {
            border-radius: var(--card-radius);
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }
        .image-text-block .it-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--card-radius);
        }
        .image-text-block .it-text h3 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .image-text-block .it-text p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .image-text-block .it-text .it-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }
        .image-text-block .it-text .it-list li {
            padding: 6px 0 6px 26px;
            position: relative;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.6;
        }
        .image-text-block .it-text .it-list li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 6px;
            color: var(--data-green);
            font-size: 13px;
        }
        @media (max-width: 768px) {
            .image-text-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .image-text-block .it-text h3 {
                font-size: 22px;
            }
        }

        /* ========== FAQ手风琴 ========== */
        .faq-accordion .accordion-item {
            border: none;
            border-bottom: 1px solid var(--mid-gray);
            background: transparent;
            margin-bottom: 0;
        }
        .faq-accordion .accordion-button {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            background: var(--white);
            padding: 18px 20px;
            border: none;
            border-radius: 0;
            box-shadow: none;
            transition: all var(--transition-normal);
            line-height: 1.4;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--brand-orange);
            background: #FFF8F4;
            box-shadow: none;
        }
        .faq-accordion .accordion-button::after {
            background-image: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition-normal);
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--brand-orange);
        }
        .faq-accordion .accordion-body {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.7;
            padding: 8px 20px 20px;
            background: #FFF8F4;
        }
        .faq-accordion .accordion-button:focus {
            border-color: transparent;
            box-shadow: none;
        }
        @media (max-width: 768px) {
            .faq-accordion .accordion-button {
                font-size: 16px;
                padding: 14px 16px;
            }
            .faq-accordion .accordion-body {
                font-size: 14px;
                padding: 6px 16px 16px;
            }
        }

        /* ========== CTA区块 ========== */
        .cta-section {
            background: linear-gradient(135deg, #FF6A13 0%, #CC5500 100%);
            border-radius: 16px;
            padding: 56px 40px;
            text-align: center;
            color: #fff;
            margin: 0 20px;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            box-shadow: 0 12px 40px rgba(255, 106, 19, 0.3);
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }
        .cta-section .cta-sub {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            line-height: 1.6;
        }
        .cta-form-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-form-row input {
            flex: 1;
            min-width: 180px;
            padding: 13px 18px;
            border-radius: var(--input-radius);
            border: 2px solid transparent;
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            font-size: 15px;
            transition: all var(--transition-normal);
            font-family: inherit;
        }
        .cta-form-row input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }
        .cta-form-row input:focus {
            outline: none;
            border-color: #fff;
            background: rgba(255, 255, 255, 0.22);
            box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.1);
        }
        .cta-form-row .btn-submit {
            padding: 13px 36px;
            border-radius: var(--btn-radius);
            background: #fff;
            color: var(--brand-orange-dark);
            font-weight: 700;
            font-size: 16px;
            border: none;
            transition: all var(--transition-normal);
            white-space: nowrap;
            font-family: inherit;
            cursor: pointer;
        }
        .cta-form-row .btn-submit:hover {
            background: #fff;
            transform: scale(1.04);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 36px 20px;
                border-radius: 12px;
                margin: 0 12px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .cta-form-row {
                flex-direction: column;
            }
            .cta-form-row input {
                min-width: 100%;
            }
            .cta-form-row .btn-submit {
                width: 100%;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #111;
            color: #AAA;
            padding: 48px 0 24px;
            margin-top: var(--section-padding);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #AAA;
            font-size: 14px;
            transition: color var(--transition-normal);
        }
        .footer-col ul li a:hover {
            color: var(--brand-orange);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: #888;
        }
        .footer-bottom a {
            color: #AAA;
        }
        .footer-bottom a:hover {
            color: var(--brand-orange);
        }
        .footer-logo {
            font-weight: 700;
            color: var(--brand-orange);
            font-size: 16px;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .site-footer {
                padding: 32px 0 16px;
            }
        }

        /* ========== 高亮数据标签 ========== */
        .highlight-badge {
            display: inline-block;
            background: var(--data-green-light);
            color: var(--data-green);
            border-radius: 20px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        /* ========== 深色背景区块 ========== */
        .bg-dark-section {
            background: var(--dark-bg);
            color: #DDD;
        }
        .bg-dark-section .section-title {
            color: #fff;
        }
        .bg-dark-section .section-subtitle {
            color: #BBB;
        }

        /* ========== 额外卡片网格 ========== */
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .card-grid-3 .info-card {
            background: var(--white);
            border-radius: var(--card-radius);
            padding: 28px 22px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-slow);
            border: 1px solid transparent;
            text-align: left;
        }
        .card-grid-3 .info-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(255, 106, 19, 0.15);
        }
        .card-grid-3 .info-card .card-icon {
            font-size: 32px;
            color: var(--brand-orange);
            margin-bottom: 10px;
        }
        .card-grid-3 .info-card h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .card-grid-3 .info-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 992px) {
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .card-grid-3 {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }

/* roulang page: category6 */
:root {
            --brand-orange: #FF6A13;
            --brand-orange-hover: #E05500;
            --brand-orange-dark: #CC5500;
            --deep-black: #1A1A1A;
            --dark-bg: #2A2A2A;
            --data-green: #00C853;
            --data-green-light: #E8F5E9;
            --light-gray: #F5F5F5;
            --mid-gray: #EAEAEA;
            --text-body: #333333;
            --text-heading: #111111;
            --text-muted: #777777;
            --text-light: #AAAAAA;
            --white: #FFFFFF;
            --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --card-shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.12);
            --card-radius: 12px;
            --btn-radius: 30px;
            --input-radius: 8px;
            --nav-radius: 40px;
            --section-padding: 80px;
            --section-padding-mobile: 40px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-hero: 48px;
            --font-section-title: 36px;
            --font-card-title: 20px;
            --font-body: 16px;
            --font-small: 14px;
            --max-width: 1200px;
        }

        @media (max-width: 992px) {
            :root {
                --font-hero: 38px;
                --font-section-title: 28px;
                --section-padding: 56px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --font-hero: 30px;
                --font-section-title: 24px;
                --section-padding: 40px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --font-hero: 26px;
                --font-section-title: 21px;
            }
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: var(--font-body);
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--white);
            overflow-x: hidden;
            padding-top: 0;
            margin: 0;
        }

        a {
            color: var(--brand-orange);
            text-decoration: none;
            transition: color var(--transition-normal);
        }
        a:hover {
            color: var(--brand-orange-hover);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }
        button:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 3px;
        }
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 2px;
        }

        section {
            position: relative;
        }

        .section-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== 悬浮胶囊导航 ========== */
        .main-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: 90%;
            max-width: var(--max-width);
            background: rgba(26, 26, 26, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--nav-radius);
            padding: 10px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            transition: all var(--transition-normal);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .main-nav.scrolled {
            background: rgba(26, 26, 26, 0.98);
            box-shadow: 0 8px 36px rgba(0, 0, 0, 0.35);
            top: 8px;
        }
        .nav-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--brand-orange) !important;
            white-space: nowrap;
            letter-spacing: 0.5px;
            text-decoration: none !important;
            transition: opacity var(--transition-normal);
        }
        .nav-logo:hover {
            opacity: 0.85;
            color: var(--brand-orange) !important;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: #CCCCCC;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 24px;
            transition: all var(--transition-normal);
            white-space: nowrap;
            text-decoration: none !important;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.1);
        }
        .nav-links a.active {
            color: var(--brand-orange);
            background: rgba(255, 106, 19, 0.15);
            font-weight: 600;
        }
        .nav-cta-btn {
            background: var(--brand-orange) !important;
            color: #fff !important;
            border-radius: 24px !important;
            padding: 9px 20px !important;
            font-weight: 600 !important;
            font-size: 14px !important;
            transition: all var(--transition-normal) !important;
            border: none;
        }
        .nav-cta-btn:hover {
            background: var(--brand-orange-hover) !important;
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 106, 19, 0.4);
        }
        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 26px;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: background var(--transition-fast);
        }
        .nav-hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        @media (max-width: 768px) {
            .main-nav {
                padding: 10px 18px;
                border-radius: 28px;
                top: 10px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 62px;
                left: 0;
                right: 0;
                background: rgba(26, 26, 26, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: 20px;
                flex-direction: column;
                padding: 16px 12px;
                gap: 2px;
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
                border: 1px solid rgba(255, 255, 255, 0.06);
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links a {
                font-size: 16px;
                padding: 12px 18px;
                width: 100%;
                text-align: center;
                border-radius: 16px;
            }
            .nav-cta-btn {
                margin-top: 6px;
                text-align: center;
                width: 100%;
                border-radius: 24px !important;
            }
            .nav-hamburger {
                display: block;
            }
        }

        /* ========== 分类页 Hero ========== */
        .category-hero {
            min-height: 420px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            position: relative;
            padding: 120px 0 60px;
            margin-top: 0;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.85) 0%, rgba(26, 26, 26, 0.5) 100%);
            z-index: 1;
        }
        .category-hero .section-container {
            position: relative;
            z-index: 2;
        }
        .category-hero .hero-badge {
            display: inline-block;
            background: rgba(255, 106, 19, 0.2);
            color: var(--brand-orange);
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 16px;
            border: 1px solid rgba(255, 106, 19, 0.3);
        }
        .category-hero h1 {
            font-size: var(--font-hero);
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            max-width: 700px;
        }
        .category-hero .hero-subtitle {
            font-size: 18px;
            color: #CCCCCC;
            max-width: 560px;
            line-height: 1.6;
            margin-bottom: 28px;
        }
        .category-hero .hero-cta-row {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary-custom {
            background: var(--brand-orange);
            color: #fff;
            border: none;
            border-radius: var(--btn-radius);
            padding: 13px 32px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition-normal);
            display: inline-block;
            text-align: center;
            cursor: pointer;
        }
        .btn-primary-custom:hover {
            background: var(--brand-orange-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(255, 106, 19, 0.4);
        }
        .btn-outline-custom {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            border-radius: var(--btn-radius);
            padding: 11px 30px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition-normal);
            display: inline-block;
            text-align: center;
            cursor: pointer;
        }
        .btn-outline-custom:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .category-hero {
                min-height: 340px;
                padding: 100px 0 40px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero .hero-subtitle {
                font-size: 15px;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                padding: 10px 22px;
                font-size: 14px;
            }
        }

        /* ========== Section 通用 ========== */
        .section-padding {
            padding: var(--section-padding) 0;
        }
        .section-padding-top {
            padding-top: var(--section-padding);
        }
        .section-padding-bottom {
            padding-bottom: var(--section-padding);
        }
        .section-title {
            font-size: var(--font-section-title);
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--text-muted);
            margin-bottom: 36px;
            max-width: 600px;
            line-height: 1.6;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header.text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 24px;
            }
            .section-header {
                margin-bottom: 28px;
            }
        }

        /* ========== 服务卡片 ========== */
        .service-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px 24px;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            height: 100%;
            border: 1px solid var(--mid-gray);
            position: relative;
            overflow: hidden;
        }
        .service-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .service-card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(255, 106, 19, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--brand-orange);
            margin-bottom: 16px;
            transition: all var(--transition-normal);
        }
        .service-card:hover .card-icon {
            background: var(--brand-orange);
            color: #fff;
        }
        .service-card h3 {
            font-size: var(--font-card-title);
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .service-card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== 指标看板 ========== */
        .metric-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            border: 1px solid var(--mid-gray);
        }
        .metric-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-3px);
        }
        .metric-card .metric-number {
            font-size: 44px;
            font-weight: 700;
            color: var(--brand-orange);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .metric-card .metric-unit {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
        }
        .metric-card .metric-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
        }

        @media (max-width: 768px) {
            .metric-card .metric-number {
                font-size: 34px;
            }
        }

        /* ========== 流程步骤 ========== */
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 20px 0;
            border-bottom: 1px solid var(--mid-gray);
            transition: all var(--transition-normal);
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--brand-orange);
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-content h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .step-content p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== 深色对比区块 ========== */
        .dark-compare-section {
            background: var(--dark-bg);
            color: #fff;
            padding: var(--section-padding) 0;
        }
        .dark-compare-section .section-title {
            color: #fff;
        }
        .dark-compare-section .section-subtitle {
            color: #BBBBBB;
        }
        .compare-card {
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--card-radius);
            padding: 28px 24px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            height: 100%;
            transition: all var(--transition-normal);
        }
        .compare-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.2);
        }
        .compare-card.before-card {
            border-left: 4px solid #888;
        }
        .compare-card.after-card {
            border-left: 4px solid var(--data-green);
        }
        .compare-card .compare-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 14px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .compare-card .compare-tag.before-tag {
            background: rgba(150, 150, 150, 0.3);
            color: #CCC;
        }
        .compare-card .compare-tag.after-tag {
            background: rgba(0, 200, 83, 0.25);
            color: var(--data-green);
        }
        .compare-card h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: #fff;
        }
        .compare-card p {
            color: #BBB;
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 0;
        }
        .compare-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: 700;
            color: var(--brand-orange);
            padding: 20px 0;
        }

        /* ========== 文章卡片列表 ========== */
        .article-card {
            background: #fff;
            border-radius: var(--card-radius);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: all var(--transition-normal);
            height: 100%;
            border: 1px solid var(--mid-gray);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .article-card .article-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .article-card .article-body {
            padding: 20px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card .article-date {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .article-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .article-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.5;
            flex: 1;
            margin-bottom: 12px;
        }
        .article-card .read-more {
            font-weight: 600;
            font-size: 14px;
            color: var(--brand-orange);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-normal);
        }
        .article-card .read-more:hover {
            color: var(--brand-orange-hover);
            gap: 8px;
        }
        .article-card .read-more i {
            font-size: 12px;
            transition: transform var(--transition-fast);
        }
        .article-card:hover .read-more i {
            transform: translateX(3px);
        }

        @media (max-width: 768px) {
            .article-card .article-img {
                height: 180px;
            }
        }

        /* ========== 分页 ========== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            margin-top: 36px;
        }
        .pagination-wrap .page-link {
            border-radius: 8px;
            margin: 0 3px;
            padding: 9px 16px;
            color: var(--text-body);
            border: 1px solid var(--mid-gray);
            transition: all var(--transition-normal);
            font-weight: 500;
        }
        .pagination-wrap .page-link:hover {
            background: rgba(255, 106, 19, 0.08);
            color: var(--brand-orange);
            border-color: var(--brand-orange);
        }
        .pagination-wrap .page-item.active .page-link {
            background: var(--brand-orange);
            border-color: var(--brand-orange);
            color: #fff;
            font-weight: 600;
        }
        .pagination-wrap .page-item.disabled .page-link {
            color: #BBB;
            pointer-events: none;
        }

        /* ========== FAQ 手风琴 ========== */
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--mid-gray);
            border-radius: 0;
            background: transparent;
        }
        .accordion-custom .accordion-button {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            background: #fff;
            padding: 18px 20px;
            border-radius: 0;
            box-shadow: none;
            transition: all var(--transition-normal);
            border: none;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: #FAFAFA;
            color: var(--brand-orange);
            box-shadow: none;
            border-bottom: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 16px;
            color: var(--brand-orange);
            transition: transform var(--transition-normal);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--brand-orange);
        }
        .accordion-custom .accordion-body {
            padding: 0 20px 20px;
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.7;
            background: #FAFAFA;
        }

        /* ========== CTA 表单 ========== */
        .cta-section {
            background: linear-gradient(135deg, #FF6A13 0%, #CC5500 100%);
            padding: var(--section-padding) 0;
            color: #fff;
        }
        .cta-section .section-title {
            color: #fff;
        }
        .cta-section .section-subtitle {
            color: rgba(255, 255, 255, 0.85);
        }
        .cta-form-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 32px 28px;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
        }
        .cta-form-card .form-label {
            font-weight: 600;
            color: var(--text-heading);
            font-size: 14px;
            margin-bottom: 6px;
        }
        .cta-form-card .form-control {
            border-radius: var(--input-radius);
            border: 1px solid #DDD;
            padding: 11px 16px;
            font-size: 15px;
            transition: all var(--transition-normal);
            box-shadow: none;
        }
        .cta-form-card .form-control:focus {
            border-color: var(--brand-orange);
            box-shadow: 0 0 0 3px rgba(255, 106, 19, 0.1);
        }
        .cta-form-card .btn-submit {
            width: 100%;
            background: var(--brand-orange);
            color: #fff;
            border: none;
            border-radius: var(--btn-radius);
            padding: 13px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition-normal);
            cursor: pointer;
        }
        .cta-form-card .btn-submit:hover {
            background: var(--brand-orange-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 106, 19, 0.4);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #111;
            color: #AAA;
            padding: 48px 0 28px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 32px;
        }
        .site-footer .footer-col h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: #AAA;
            font-size: 14px;
            transition: color var(--transition-normal);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--brand-orange);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: #888;
        }
        .site-footer .footer-bottom a {
            color: #AAA;
        }
        .site-footer .footer-bottom a:hover {
            color: var(--brand-orange);
        }
        .footer-logo {
            font-weight: 700;
            color: var(--brand-orange) !important;
            font-size: 16px;
        }

        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }
        @media (max-width: 480px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== 场景标签 ========== */
        .scenario-tag {
            display: inline-block;
            padding: 8px 18px;
            background: rgba(255, 106, 19, 0.06);
            color: var(--brand-orange);
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            margin: 4px;
            border: 1px solid rgba(255, 106, 19, 0.15);
            transition: all var(--transition-normal);
        }
        .scenario-tag:hover {
            background: rgba(255, 106, 19, 0.12);
            border-color: var(--brand-orange);
            color: var(--brand-orange-hover);
        }

        /* ========== 特色区块 ========== */
        .feature-highlight {
            background: var(--light-gray);
            border-radius: var(--card-radius);
            padding: 36px 30px;
            height: 100%;
            transition: all var(--transition-normal);
            border: 1px solid transparent;
        }
        .feature-highlight:hover {
            border-color: var(--brand-orange);
            background: #fff;
            box-shadow: var(--card-shadow-hover);
        }
        .feature-highlight .feature-icon {
            font-size: 38px;
            color: var(--brand-orange);
            margin-bottom: 14px;
        }
        .feature-highlight h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .feature-highlight p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }