/* roulang page: index */
/* 设计变量 - 活力橙 + 科技深蓝 主题 */
        :root {
            --primary-color: #FF6B35;
            --primary-dark: #E55A2E;
            --secondary-color: #1A365D;
            --accent-color: #4CD964;
            --text-primary: #333333;
            --text-secondary: #666666;
            --text-muted: #999999;
            --bg-light: #F8F9FA;
            --bg-lighter: #F1F3F4;
            --bg-white: #FFFFFF;
            --border-color: #E0E0E0;
            --radius-base: 8px;
            --radius-large: 16px;
            --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 24px rgba(255, 107, 53, 0.15);
            --glass-bg: rgba(255, 255, 255, 0.92);
            --header-height: 80px;
            --container-width: 1200px;
            --transition-base: all 0.3s ease;
        }

        /* 基础重置与排版 */
        *, *::before, *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-light);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

        h1, h2, h3, h4 {
            font-weight: 700;
            margin-top: 0;
            line-height: 1.2;
        }

        h1 {
            font-size: 2.5rem;
        }

        h2 {
            font-size: 2rem;
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 2rem;
            position: relative;
            display: inline-block;
        }

        h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--primary-color);
            border-radius: 2px;
        }

        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 1rem;
        }

        p {
            margin-bottom: 1.5rem;
        }

        a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: var(--transition-base);
        }

        a:hover {
            color: var(--primary-color);
        }

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

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        section {
            padding: 6rem 0;
        }

        .section-alt {
            background-color: var(--bg-white);
        }

        .text-center {
            text-align: center;
        }

        /* 浮动 Dock 导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            z-index: 1000;
            background: transparent;
            transition: var(--transition-base);
        }

        header.scrolled {
            background: var(--secondary-color);
        }

        .nav-dock {
            max-width: 1100px;
            margin: 20px auto 0;
            background: var(--glass-bg);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            padding: 0 2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            position: relative;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--secondary-color);
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .logo i {
            color: var(--primary-color);
            font-size: 1.75rem;
        }

        .logo span {
            background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        nav ul {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 2rem;
        }

        nav a {
            color: var(--text-primary);
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }

        nav a:hover {
            color: var(--primary-color);
        }

        nav a.active {
            color: var(--primary-color);
        }

        nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary-color);
            border-radius: 1px;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 1.5rem;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--secondary-color);
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* 按钮系统 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.875rem 2rem;
            font-weight: 600;
            border-radius: var(--radius-base);
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            text-align: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: white;
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: white;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--secondary-color);
            border: 2px solid var(--secondary-color);
        }

        .btn-secondary:hover {
            background-color: var(--secondary-color);
            color: white;
            transform: translateY(-2px);
        }

        .btn-large {
            padding: 1.125rem 3rem;
            font-size: 1.125rem;
        }

        /* Hero 区域 */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background: linear-gradient(rgba(26, 54, 93, 0.85), rgba(26, 54, 93, 0.9)), url('/assets/images/backpic/hero-bg.jpg') no-repeat center center;
            background-size: cover;
            color: white;
            padding-top: var(--header-height);
        }

        .hero-content {
            max-width: 700px;
            padding: 2rem 0;
        }

        .hero h1 {
            font-size: 3.5rem;
            line-height: 1.1;
            margin-bottom: 1.5rem;
            color: white;
        }

        .hero p {
            font-size: 1.25rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 2.5rem;
            max-width: 600px;
        }

        .hero-cta {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        /* 功能展示 */
        .features-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 4rem;
        }

        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            transition: var(--transition-base);
            height: 100%;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .feature-card-main {
            grid-row: span 2;
        }

        .feature-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .feature-card-main img {
            height: 300px;
        }

        .feature-content {
            padding: 2rem;
        }

        .feature-icon {
            color: var(--primary-color);
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        /* 场景沉浸区 */
        .scenario {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .scenario:nth-child(even) .scenario-image {
            order: 1;
        }

        .scenario-image {
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
        }

        .scenario-image img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            transition: var(--transition-base);
        }

        .scenario-image:hover img {
            transform: scale(1.05);
        }

        .scenario-content ul {
            list-style: none;
            padding: 0;
            margin: 2rem 0;
        }

        .scenario-content li {
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .scenario-content i {
            color: var(--accent-color);
        }

        /* 案例看板 */
        .cases {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 2rem;
        }

        .case-card {
            background: var(--bg-white);
            border-radius: var(--radius-base);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            transition: var(--transition-base);
        }

        .case-card:hover {
            box-shadow: var(--shadow-hover);
        }

        .case-header {
            display: flex;
            align-items: center;
            padding: 1.5rem;
            background: var(--bg-lighter);
            gap: 1rem;
        }

        .case-logo {
            width: 60px;
            height: 60px;
            background: var(--secondary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1.5rem;
        }

        .case-stats {
            display: flex;
            justify-content: space-around;
            padding: 1.5rem;
            border-top: 1px solid var(--border-color);
        }

        .stat {
            text-align: center;
        }

        .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }

        .stat-label {
            font-size: 0.875rem;
            color: var(--text-secondary);
        }

        /* 定价引导 */
        .pricing-tiers {
            display: flex;
            gap: 2rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .pricing-card {
            background: var(--bg-white);
            border-radius: var(--radius-large);
            padding: 3rem 2rem;
            box-shadow: var(--shadow-soft);
            flex: 1;
            min-width: 280px;
            max-width: 350px;
            transition: var(--transition-base);
            position: relative;
            border: 2px solid transparent;
        }

        .pricing-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .pricing-card.featured {
            border-color: var(--primary-color);
        }

        .pricing-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--primary-color);
            color: white;
            padding: 0.25rem 1rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .pricing-title {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }

        .pricing-price {
            font-size: 3rem;
            font-weight: 800;
            color: var(--secondary-color);
            margin: 1.5rem 0;
        }

        .pricing-price span {
            font-size: 1rem;
            color: var(--text-secondary);
            font-weight: normal;
        }

        .pricing-features {
            list-style: none;
            padding: 0;
            margin: 2rem 0;
        }

        .pricing-features li {
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .pricing-features i {
            color: var(--accent-color);
        }

        /* FAQ */
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-lighter);
            border-radius: var(--radius-base);
            margin-bottom: 1rem;
            overflow: hidden;
        }

        .faq-question {
            padding: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
        }

        .faq-question:hover {
            background: rgba(255, 107, 53, 0.05);
        }

        .faq-question i {
            color: var(--primary-color);
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 1.5rem;
            display: none;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        /* 最终 CTA */
        .final-cta {
            background: var(--secondary-color);
            color: white;
            border-radius: var(--radius-large);
            padding: 6rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .final-cta h2 {
            color: white;
            margin-bottomfont-size: 2.5rem;
        }
        .final-cta h2::after {
            background: var(--accent-color);
        }
        .final-cta p {
            font-size: 1.25rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 700px;
            margin: 0 auto 3rem;
        }

        /* 信任徽标 */
        .trust-logos {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 3rem;
            padding: 2rem 0;
        }
        .trust-logo {
            filter: grayscale(1);
            opacity: 0.6;
            transition: var(--transition-base);
        }
        .trust-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .trust-logo img {
            height: 40px;
            width: auto;
        }

        /* 页脚 */
        footer {
            background: var(--secondary-color);
            color: white;
            padding: 4rem 0 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 350px;
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.25rem;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.8);
        }
        .footer-links a:hover {
            color: var(--primary-color);
        }
        .footer-contact i {
            color: var(--primary-color);
            margin-right: 0.75rem;
            width: 20px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.875rem;
        }
        .footer-bottom a {
            color: var(--primary-color);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .nav-dock {
                max-width: 90%;
            }
            .hero h1 {
                font-size: 3rem;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-card-main {
                grid-column: span 2;
            }
            .scenario {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .scenario-image {
                order: 0 !important;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            nav ul {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: var(--bg-white);
                flex-direction: column;
                padding: 2rem;
                box-shadow: 0 10px 30px rgba(0,0,0,0.1);
                display: none;
            }
            nav ul.active {
                display: flex;
            }
            .nav-cta .btn {
                display: none;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero-cta {
                flex-direction: column;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .feature-card-main {
                grid-column: span 1;
            }
            .pricing-tiers {
                flex-direction: column;
                align-items: center;
            }
            .pricing-card {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            section {
                padding: 4rem 0;
            }
        }

        @media (max-width: 640px) {
            .nav-dock {
                margin: 10px auto 0;
                padding: 0 1rem;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            h2 {
                font-size: 1.75rem;
            }
            .trust-logos {
                gap: 1.5rem;
            }
            .trust-logo img {
                height: 30px;
            }
        }

/* roulang page: category1 */
/* 设计变量 */
        :root {
            --color-primary: #FF6B35;
            --color-primary-dark: #E55A2E;
            --color-secondary: #1A365D;
            --color-accent: #4CD964;
            --color-bg-light: #F8F9FA;
            --color-bg-very-light: #F1F3F4;
            --color-text: #333333;
            --color-text-light: #666666;
            --color-text-lighter: #999999;
            --color-border: #E1E4E8;
            --color-white: #FFFFFF;

            --radius-base: 8px;
            --radius-large: 16px;
            --radius-nav: 12px;

            --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-card-hover: 0 8px 24px rgba(255, 107, 53, 0.15);
            --shadow-nav: 0 8px 30px rgba(0, 0, 0, 0.12);

            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;

            --font-heading: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-body: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
        }

        /* 基础重置 */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-body);
            font-weight: 400;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg-light);
            overflow-x: hidden;
        }

        h1, h2, h3, h4 {
            font-family: var(--font-heading);
            margin-top: 0;
            line-height: 1.2;
            color: var(--color-secondary);
        }

        h1 {
            font-size: 2.5rem;
            font-weight: 700;
        }
        h2 {
            font-size: 2rem;
            font-weight: 600;
            margin-bottom: var(--space-md);
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: var(--space-sm);
        }

        p {
            margin-top: 0;
            margin-bottom: 1.5em;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--color-primary-dark);
        }

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

        /* 工具类与容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: var(--space-md);
            padding-right: var(--space-md);
        }

        .section {
            padding-top: var(--space-xl);
            padding-bottom: var(--space-xl);
        }
        .section--narrow {
            padding-top: var(--space-lg);
            padding-bottom: var(--space-lg);
        }
        .section--alt {
            background-color: var(--color-white);
        }
        .section--dark {
            background-color: var(--color-secondary);
            color: var(--color-white);
        }
        .section--dark h2,
        .section--dark h3 {
            color: var(--color-white);
        }

        .text-center {
            text-align: center;
        }

        /* 浮动 Dock 导航 */
        .site-header {
            position: fixed;
            top: 20px;
            left: 0;
            width: 100%;
            z-index: 1000;
            pointer-events: none;
        }
        .nav-dock {
            pointer-events: auto;
            max-width: 1100px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(225, 228, 232, 0.7);
            border-radius: var(--radius-nav);
            padding: 0.75rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-nav);
        }
        .nav-brand {
            display: flex;
            align-items: center;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-secondary);
        }
        .nav-brand i {
            color: var(--color-primary);
            margin-right: 0.5rem;
            font-size: 1.2em;
        }
        #main-nav {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        #main-nav li {
            margin: 0 0.75rem;
        }
        #main-nav a {
            color: var(--color-text-light);
            font-weight: 500;
            padding: 0.5rem 0.75rem;
            border-radius: var(--radius-base);
            transition: all 0.2s ease;
        }
        #main-nav a:hover,
        #main-nav a.active {
            color: var(--color-primary);
            background-color: rgba(255, 107, 53, 0.08);
        }
        #main-nav a.active {
            font-weight: 600;
        }
        .nav-cta {
            background-color: var(--color-primary);
            color: white !important;
            padding: 0.6rem 1.25rem !important;
            border-radius: var(--radius-base);
            font-weight: 600;
        }
        .nav-cta:hover {
            background-color: var(--color-primary-dark);
            transform: translateY(-2px);
        }

        /* 移动端导航 */
        @media screen and (max-width: 768px) {
            .site-header {
                top: 10px;
            }
            .nav-dock {
                flex-direction: column;
                padding: 0.75rem;
                align-items: stretch;
            }
            .nav-brand {
                margin-bottom: 0.5rem;
                justify-content: center;
            }
            #main-nav {
                justify-content: center;
                flex-wrap: wrap;
            }
            #main-nav li {
                margin: 0.25rem;
            }
            .nav-cta {
                margin-top: 0.5rem;
                align-self: center;
            }
        }

        /* 分类页 Hero */
        .category-hero {
            padding-top: 10rem;
            padding-bottom: 6rem;
            background: linear-gradient(rgba(26, 54, 93, 0.85), rgba(26, 54, 93, 0.7)), url('/assets/images/backpic/back-2.webp') no-repeat center center / cover;
            color: var(--color-white);
            text-align: center;
            margin-bottom: var(--space-xl);
        }
        .category-hero h1 {
            color: var(--color-white);
            font-size: 3rem;
            margin-bottom: var(--space-sm);
        }
        .category-hero p {
            font-size: 1.25rem;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            opacity: 0.9;
        }

        /* 卖点网格 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--space-lg);
            margin-bottom: var(--space-xl);
        }
        .feature-card {
            background: var(--color-white);
            border-radius: var(--radius-large);
            padding: var(--space-lg);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-card-hover);
        }
        .feature-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto var(--space-md);
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 2rem;
        }
        .feature-card h3 {
            color: var(--color-secondary);
        }

        /* 使用场景 */
        .scenario-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-xl);
            align-items: center;
            margin-bottom: var(--space-xl);
        }
        .scenario-block:nth-child(even) .scenario-content {
            order: 2;
        }
        .scenario-content ul {
            list-style: none;
            padding: 0;
        }
        .scenario-content li {
            padding: 0.5rem 0;
            display: flex;
            align-items: flex-start;
        }
        .scenario-content li i {
            color: var(--color-accent);
            margin-right: 0.75rem;
            margin-top: 0.25rem;
        }
        .scenario-image {
            border-radius: var(--radius-large);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
        }

        /* 流程图/流程展示 */
        .process-steps {
            counter-reset: step;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: var(--space-md);
            text-align: center;
            margin-bottom: var(--space-xl);
        }
        .process-step {
            position: relative;
            padding-top: 4rem;
        }
        .process-step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 3rem;
            height: 3rem;
            background-color: var(--color-primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.25rem;
        }
        .process-step h4 {
            margin-top: 1rem;
            margin-bottom: 0.5rem;
            color: var(--color-secondary);
        }

        /* FAQ */
        .faq-container {
            max-width: 800px;
            margin: 0 auto var(--space-xl);
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 1.5rem 0;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--color-secondary);
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--color-primary);
        }
        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding-top 0.3s ease;
            color: var(--color-text-light);
        }
        .faq-item.active .faq-answer {
            max-height: 500px;
            padding-top: 1rem;
        }

        /* CTA */
        .final-cta {
            text-align: center;
            padding: var(--space-xl) var(--space-md);
            border-radius: var(--radius-large);
            background: linear-gradient(135deg, var(--color-secondary), #2A4365);
            color: white;
            margin-bottom: var(--space-xl);
        }
        .final-cta h2 {
            font-size: 2.5rem;
            margin-bottom: var(--space-md);
        }
        .cta-button {
            display: inline-block;
            background-color: var(--color-primary);
            color: white;
            padding: 1rem 2.5rem;
            border-radius: var(--radius-base);
            font-size: 1.125rem;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .cta-button:hover {
            background-color: var(--color-primary-dark);
            transform: translateY(-4px) scale(1.05);
            box-shadow: 0 12px 30px rgba(255, 107, 53, 0.3);
        }

        /* 按钮通用 */
        .button {
            display: inline-block;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius-base);
            font-weight: 600;
            text-align: center;
            cursor: pointer;
            transition: all 0.2s ease;
            border: 2px solid transparent;
        }
        .button--primary {
            background-color: var(--color-primary);
            color: white;
        }
        .button--primary:hover {
            background-color: var(--color-primary-dark);
            transform: translateY(-2px);
        }
        .button--outline {
            background-color: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .button--outline:hover {
            background-color: rgba(255, 107, 53, 0.1);
        }

        /* 页脚 */
        footer {
            background-color: var(--color-secondary);
            color: rgba(255, 255, 255, 0.85);
            padding-top: var(--space-xl);
            padding-bottom: var(--space-md);
        }
        ..footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: var(--space-lg);
            margin-bottom: var(--space-xl);
        }
        .footer-brand .logo {
            display: flex;
            align-items: center;
            font-size: 1.5rem;
            font-weight: 700;
            color: white;
            margin-bottom: 1.5rem;
        }
        .footer-brand .logo i {
            color: var(--color-primary);
            margin-right: 0.75rem;
            font-size: 1.5em;
        }
        .footer-links h4,
        .footer-contact h4 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.125rem;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.75);
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--color-primary);
        }
        .footer-contact p {
            display: flex;
            align-items: flex-start;
            margin-bottom: 1rem;
        }
        .footer-contact i {
            color: var(--color-primary);
            margin-right: 0.75rem;
            margin-top: 0.2rem;
            min-width: 1em;
        }
        .footer-bottom {
            text-align: center;
            padding-top: var(--space-md);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.875rem;
        }

        /* 响应式调整 */
        @media screen and (max-width: 1024px) {
            .category-hero {
                padding-top: 8rem;
                padding-bottom: 4rem;
            }
            .scenario-block {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .scenario-block:nth-child(even) .scenario-content {
                order: 0;
            }
        }
        @media screen and (max-width: 640px) {
            :root {
                --space-xl: 4rem;
                --space-lg: 2.5rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.75rem;
            }
            .category-hero h1 {
                font-size: 2.25rem;
            }
            .final-cta h2 {
                font-size: 2rem;
            }
            .features-grid,
            .process-steps {
                grid-template-columns: 1fr;
            }
        }