:root {
            --blue: #2563eb;
            --blue-dark: #1d4ed8;
            --slate-900: #0f172a;
            --slate-700: #334155;
            --slate-500: #64748b;
            --slate-200: #e2e8f0;
            --slate-100: #f1f5f9;
            --slate-50: #f8fafc;
            --white: #fff;
            --amber: #f59e0b;
            --emerald: #10b981;
            --violet: #7c3aed;
            --radius-xl: 24px;
            --radius-lg: 16px;
            --radius-full: 50px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.10);
            --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            background: var(--slate-50);
            color: var(--slate-900);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* 导航栏 */
        header {
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .logo {
            font-size: 1.65rem;
            font-weight: 800;
            background: linear-gradient(135deg, #1e293b, #2563eb);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -0.5px;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            gap: 22px;
            align-items: center;
            flex-wrap: wrap;
            font-size: 0.95rem;
        }
        .nav-links a {
            text-decoration: none;
            font-weight: 500;
            color: var(--slate-700);
            transition: color 0.2s;
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--blue);
        }
        /* 按钮 */
        .btn {
            display: inline-block;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            text-decoration: none;
            transition: all 0.25s;
            cursor: pointer;
            border: none;
            font-size: 0.95rem;
            text-align: center;
        }
        .btn-primary {
            background: var(--blue);
            color: #fff;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
        }
        .btn-primary:hover {
            background: var(--blue-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--blue);
            border: 1.5px solid var(--blue);
        }
        .btn-outline:hover {
            background: #eff6ff;
            transform: translateY(-2px);
        }
        .btn-ghost {
            background: transparent;
            color: var(--blue);
            padding: 10px 20px;
            font-weight: 600;
        }
        .btn-ghost:hover {
            background: #eff6ff;
        }
        .btn-white {
            background: #fff;
            color: var(--slate-900);
            box-shadow: var(--shadow-md);
        }
        .btn-white:hover {
            background: #f1f5f9;
            transform: translateY(-2px);
        }
        /* Hero */
        .hero {
            padding: 60px 0 50px;
            background: linear-gradient(160deg, #eff6ff 0%, #f0f9ff 40%, #faf5ff 100%);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .hero-content {
            flex: 1.2;
            min-width: 280px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(37, 99, 235, 0.1);
            color: var(--blue);
            padding: 6px 15px;
            border-radius: 40px;
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 16px;
            color: var(--slate-900);
        }
        .hero-highlight {
            background: linear-gradient(135deg, #2563eb, #7c3aed);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: var(--slate-500);
            margin-bottom: 28px;
            max-width: 480px;
            line-height: 1.6;
        }
        /* 三入口分流 */
        .hero-split {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .hero-split .btn {
            flex: 1;
            min-width: 150px;
            text-align: center;
            font-size: 0.9rem;
            padding: 14px 20px;
        }
        .hero-split .btn-primary {
            background: var(--blue);
        }
        .hero-split .btn-outline {
            border-color: var(--slate-200);
            color: var(--slate-700);
        }
        .hero-split .btn-outline:hover {
            border-color: var(--blue);
            color: var(--blue);
            background: #fff;
        }
        .hero-split .btn-accent {
            background: #fff;
            color: var(--violet);
            border: 1.5px solid #e9d5ff;
        }
        .hero-split .btn-accent:hover {
            border-color: var(--violet);
            background: #faf5ff;
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 24px;
            margin-top: 28px;
            flex-wrap: wrap;
        }
        .stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--slate-500);
        }
        .stat-item strong {
            font-size: 1.3rem;
            color: var(--slate-900);
        }
        .hero-visual {
            flex: 0.9;
            min-width: 240px;
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 28px 24px;
            box-shadow: var(--shadow-lg);
            text-align: center;
        }
        .hero-visual .stars-row {
            color: #fbbf24;
            font-size: 1.3rem;
            letter-spacing: 2px;
            margin-bottom: 6px;
        }
        .hero-visual .rating-big {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--slate-900);
        }
        .hero-visual .platform-tags {
            margin-top: 14px;
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--slate-500);
        }
        .hero-visual .platform-tags span {
            background: var(--slate-100);
            padding: 6px 12px;
            border-radius: 20px;
            font-weight: 500;
        }
        /* 通用区块 */
        .section {
            padding: 64px 0;
        }
        .section-title {
            text-align: center;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--slate-900);
            letter-spacing: -0.5px;
        }
        .section-subtitle {
            text-align: center;
            color: var(--slate-500);
            margin-bottom: 44px;
            font-size: 1rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        /* 客户端矩阵 */
        .client-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .client-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
            gap: 14px;
            position: relative;
            overflow: hidden;
        }
        .client-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--slate-200);
        }
        .client-card .card-accent {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
        }
        .client-card:nth-child(1) .card-accent {
            background: var(--blue);
        }
        .client-card:nth-child(2) .card-accent {
            background: var(--amber);
        }
        .client-card:nth-child(3) .card-accent {
            background: var(--emerald);
        }
        .client-card .card-icon {
            font-size: 2.4rem;
        }
        .client-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
        }
        .client-card .platform-info {
            font-size: 0.82rem;
            color: var(--slate-500);
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .client-card .platform-info span {
            background: var(--slate-100);
            padding: 4px 10px;
            border-radius: 14px;
        }
        .client-card .rating-row {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }
        .client-card .rating-row .star {
            color: #fbbf24;
        }
        .client-card .card-actions {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: auto;
        }
        .client-card .card-actions .btn {
            font-size: 0.85rem;
            padding: 10px 20px;
            flex: 1;
            text-align: center;
            min-width: 100px;
        }
        /* 场景模块 */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
        }
        .scene-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s;
            border: 1px solid transparent;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--slate-200);
            transform: translateY(-2px);
        }
        .scene-card .scene-icon {
            font-size: 2.6rem;
            margin-bottom: 10px;
        }
        .scene-card h4 {
            font-weight: 700;
            margin-bottom: 6px;
            font-size: 1.05rem;
        }
        .scene-card p {
            font-size: 0.85rem;
            color: var(--slate-500);
            line-height: 1.5;
        }
        /* 流程 */
        .flow-steps {
            display: flex;
            gap: 0;
            align-items: flex-start;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }
        .flow-step {
            flex: 1;
            min-width: 200px;
            max-width: 260px;
            text-align: center;
            padding: 20px 16px;
            position: relative;
        }
        .flow-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--blue);
            color: #fff;
            font-weight: 800;
            font-size: 1.3rem;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }
        .flow-step h4 {
            font-weight: 700;
            margin-bottom: 4px;
        }
        .flow-step p {
            font-size: 0.82rem;
            color: var(--slate-500);
        }
        .flow-step::after {
            content: '';
            position: absolute;
            top: 42px;
            left: 60%;
            width: 80%;
            height: 2px;
            background: var(--slate-200);
            z-index: 1;
        }
        .flow-step:last-child::after {
            display: none;
        }
        @media (max-width: 768px) {
            .flow-step::after {
                display: none;
            }
            .flow-steps {
                flex-direction: column;
                align-items: center;
            }
            .flow-step {
                max-width: 100%;
            }
        }
        /* 快速对比表 */
        .compare-mini {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            margin-top: 8px;
        }
        .compare-mini table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            min-width: 600px;
        }
        .compare-mini th,
        .compare-mini td {
            padding: 14px 16px;
            text-align: center;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--slate-100);
        }
        .compare-mini th {
            background: #f8fafc;
            font-weight: 700;
            color: var(--slate-900);
            font-size: 0.85rem;
            white-space: nowrap;
        }
        .compare-mini td:first-child {
            text-align: left;
            font-weight: 600;
            white-space: nowrap;
        }
        .compare-mini .check {
            color: var(--emerald);
            font-weight: 700;
        }
        .compare-mini .partial {
            color: var(--amber);
        }
        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-list details {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 0;
            box-shadow: var(--shadow-sm);
            transition: all 0.2s;
            border: 1px solid transparent;
        }
        .faq-list details:hover {
            border-color: var(--slate-200);
        }
        .faq-list summary {
            padding: 18px 22px;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.95rem;
            color: var(--slate-900);
        }
        .faq-list summary::-webkit-details-marker {
            display: none;
        }
        .faq-list summary::after {
            content: '+';
            font-size: 1.3rem;
            color: var(--blue);
            font-weight: 700;
            transition: transform 0.3s;
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-list details[open] summary::after {
            content: '−';
            transform: rotate(180deg);
        }
        .faq-list .faq-answer {
            padding: 0 22px 18px;
            color: var(--slate-500);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .faq-list .faq-answer a {
            color: var(--blue);
            font-weight: 500;
        }
        /* CTA */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(105deg, #0f172a 0%, #1e293b 100%);
            color: #fff;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 1.9rem;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            opacity: 0.85;
            margin-bottom: 28px;
            font-size: 1rem;
        }
        .cta-section .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* 推荐教程 */
        .tutorial-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 16px;
        }
        .tutorial-link-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 20px;
            text-decoration: none;
            color: var(--slate-900);
            box-shadow: var(--shadow-sm);
            transition: all 0.25s;
            border: 1px solid transparent;
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .tutorial-link-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--blue);
            transform: translateX(4px);
        }
        .tutorial-link-card .link-icon {
            font-size: 1.8rem;
            flex-shrink: 0;
        }
        .tutorial-link-card .link-text strong {
            display: block;
            font-size: 0.95rem;
        }
        .tutorial-link-card .link-text span {
            font-size: 0.78rem;
            color: var(--slate-500);
        }
        /* Footer */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 40px 0 20px;
            font-size: 0.85rem;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 28px;
            margin-bottom: 24px;
        }
        .footer-content h4 {
            color: #fff;
            margin-bottom: 10px;
            font-size: 0.9rem;
        }
        .footer-content ul {
            list-style: none;
        }
        .footer-content ul li {
            margin-bottom: 6px;
        }
        .footer-content ul li a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.2s;
        }
        .footer-content ul li a:hover {
            color: #fff;
        }
        .footer-copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #1e293b;
            font-size: 0.8rem;
        }
        /* 响应式 */
        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-grid {
                flex-direction: column;
                gap: 24px;
            }
            .hero-visual {
                width: 100%;
            }
            .hero-split {
                flex-direction: column;
            }
            .hero-split .btn {
                min-width: auto;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .client-grid {
                grid-template-columns: 1fr;
            }
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            nav {
                flex-direction: column;
                align-items: flex-start;
            }
            .nav-links {
                gap: 14px;
                font-size: 0.88rem;
            }
        }
        @media (max-width: 480px) {
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .hero-stats {
                gap: 14px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }