:root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --accent-red: #ff4b8b;
            --accent-yellow: #f59e0b;
            --accent-cyan: #06b6d4;
            --text-dark: #1f2937;
            --text-muted: #6b7280;
            --bg-light: #fafafa;
            --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            --rainbow-gradient: linear-gradient(135deg, #ff4b8b 0%, #f59e0b 25%, #10b981 50%, #06b6d4 75%, #8b5cf6 100%);
            --rainbow-soft: linear-gradient(135deg, rgba(255,75,139,0.08) 0%, rgba(245,158,11,0.08) 25%, rgba(16,185,129,0.08) 50%, rgba(6,182,212,0.08) 75%, rgba(139,92,246,0.08) 100%);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-light);
            color: var(--text-dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .ai-page-logo {
            max-height: 40px;
            width: auto;
        }

        .logo-text {
            font-weight: 800;
            font-size: 20px;
            background: var(--rainbow-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        nav {
            display: flex;
            gap: 20px;
        }

        nav a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 14px;
            transition: color 0.3s;
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-mini {
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
            transition: all 0.3s;
        }

        .btn-mini-outline {
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }

        .btn-mini-primary {
            background: var(--rainbow-gradient);
            color: #fff;
            border: none;
            box-shadow: 0 4px 10px rgba(79, 70, 229, 0.2);
        }

        .btn-mini-primary:hover {
            transform: translateY(-2px);
        }

        .menu-toggle {
            display: none;
            font-size: 24px;
            cursor: pointer;
        }

        /* 移动端菜单结构 */
        @media (max-width: 992px) {
            nav {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid rgba(0,0,0,0.1);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            nav.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
        }

        /* 第一屏 - 纯色/渐变/几何/动效 (无图) */
        .hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background: radial-gradient(circle at 80% 20%, rgba(245,158,11,0.06), transparent 40%),
                        radial-gradient(circle at 10% 80%, rgba(139,92,246,0.06), transparent 40%),
                        #ffffff;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: var(--rainbow-gradient);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(79, 70, 229, 0.05);
            border: 1px solid rgba(79, 70, 229, 0.15);
            padding: 6px 16px;
            border-radius: 30px;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
            animation: bounce 2s infinite;
        }

        .hero-title {
            font-size: clamp(28px, 4.5vw, 48px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-dark);
            max-width: 900px;
            margin: 0 auto 20px;
        }

        .hero-title span {
            background: var(--rainbow-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 35px;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 50px;
        }

        .btn-large {
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 700;
            text-decoration: none;
            transition: all 0.3s;
            font-size: 15px;
        }

        .btn-primary {
            background: var(--rainbow-gradient);
            color: #fff;
            box-shadow: 0 10px 25px rgba(255, 75, 139, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(255, 75, 139, 0.35);
        }

        .btn-outline {
            border: 2px solid var(--text-dark);
            color: var(--text-dark);
        }

        .btn-outline:hover {
            background: var(--text-dark);
            color: #fff;
            transform: translateY(-3px);
        }

        /* 核心卖点轻卡片 */
        .hero-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .hero-feat-card {
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(0,0,0,0.05);
            padding: 20px;
            border-radius: 16px;
            backdrop-filter: blur(10px);
            transition: all 0.3s;
        }

        .hero-feat-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-light);
            box-shadow: var(--card-shadow);
        }

        .hero-feat-card h4 {
            font-size: 16px;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .hero-feat-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 通用区块设置 */
        section {
            padding: 80px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
        }

        .section-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: var(--rainbow-gradient);
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 15px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: -30px;
        }

        .stat-card {
            background: #fff;
            padding: 30px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            border-top: 4px solid var(--primary);
            text-align: center;
            transition: transform 0.3s;
        }

        .stat-card:nth-child(2) { border-top-color: var(--accent-red); }
        .stat-card:nth-child(3) { border-top-color: var(--accent-yellow); }
        .stat-card:nth-child(4) { border-top-color: var(--accent-cyan); }

        .stat-card:hover {
            transform: translateY(-5px);
        }

        .stat-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 8px;
            background: var(--rainbow-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 26px;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .about-text p {
            margin-bottom: 16px;
            color: var(--text-muted);
        }

        .brand-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-top: 25px;
        }

        .bf-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
        }

        .bf-icon {
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
        }

        .decor-box {
            background: var(--rainbow-soft);
            border-radius: 30px;
            padding: 40px;
            border: 1px solid rgba(0,0,0,0.05);
            position: relative;
        }

        .decor-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        /* 服务体系 (聚合模型) */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .service-card {
            background: #fff;
            padding: 35px;
            border-radius: 24px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(0,0,0,0.03);
            transition: all 0.3s;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.08);
            border-color: rgba(79,70,229,0.2);
        }

        .service-icon-dot {
            width: 45px;
            height: 45px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: #fff;
            margin-bottom: 20px;
        }

        .sc-1 { background: linear-gradient(135deg, #ff4b8b, #ff76a2); }
        .sc-2 { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
        .sc-3 { background: linear-gradient(135deg, #10b981, #34d399); }
        .sc-4 { background: linear-gradient(135deg, #06b6d4, #22d3ee); }
        .sc-5 { background: linear-gradient(135deg, #8b5cf6, #a78bfa); }
        .sc-6 { background: linear-gradient(135deg, #6366f1, #818cf8); }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .model-tag {
            background: #f3f4f6;
            color: var(--text-dark);
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 500;
        }

        /* 制作流程 */
        .process-flow {
            display: flex;
            flex-direction: column;
            gap: 30px;
            max-width: 800px;
            margin: 0 auto;
        }

        .process-step {
            display: flex;
            background: #fff;
            padding: 24px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            border-left: 5px solid var(--primary);
            gap: 20px;
            align-items: center;
        }

        .process-step:nth-child(even) {
            border-left-color: var(--accent-red);
        }

        .step-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-light);
            min-width: 40px;
        }

        .step-info h4 {
            font-size: 18px;
            margin-bottom: 5px;
        }

        .step-info p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }

        .sol-card {
            background: #fff;
            padding: 30px;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(0,0,0,0.02);
            transition: all 0.3s;
        }

        .sol-card:hover {
            transform: scale(1.03);
        }

        .sol-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--primary);
        }

        .sol-desc {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 全国服务网络与时间线 */
        .timeline-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .map-intro {
            background: var(--rainbow-soft);
            padding: 30px;
            border-radius: 20px;
        }

        .timeline {
            border-left: 2px dashed var(--primary);
            padding-left: 20px;
            margin-left: 10px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 30px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 5px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid #fff;
        }

        .timeline-time {
            font-weight: 700;
            color: var(--primary);
            font-size: 13px;
        }

        .timeline-title {
            font-size: 16px;
            font-weight: 600;
            margin: 4px 0;
        }

        .timeline-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .case-card {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: #eee;
            position: relative;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

        .case-card:hover .case-img-container img {
            transform: scale(1.08);
        }

        .case-content {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            padding: 2px 8px;
            border-radius: 4px;
            background: rgba(79, 70, 229, 0.08);
            color: var(--primary);
            font-size: 11px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .case-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .case-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 对比评测 */
        .comparison-area {
            background: #fff;
            padding: 40px;
            border-radius: 24px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(0,0,0,0.03);
        }

        .rating-box {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
            margin-bottom: 30px;
            background: var(--rainbow-soft);
            padding: 20px;
            border-radius: 12px;
        }

        .rating-num {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent-red);
        }

        .rating-label {
            font-size: 16px;
            font-weight: 700;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        th, td {
            padding: 16px;
            border-bottom: 1px solid #f3f4f6;
            font-size: 14px;
        }

        th {
            background: #f9fafb;
            font-weight: 700;
        }

        .highlight-col {
            background: rgba(79, 70, 229, 0.02);
            font-weight: 600;
            color: var(--primary);
        }

        /* Token 比价 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .price-card {
            background: #fff;
            padding: 25px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            text-align: center;
            border: 1px solid rgba(0,0,0,0.03);
        }

        .price-card.hot {
            border: 2px solid var(--accent-red);
            position: relative;
        }

        .price-card.hot::after {
            content: '全网推荐';
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent-red);
            color: #fff;
            padding: 2px 8px;
            border-radius: 10px;
            font-size: 10px;
            font-weight: 700;
        }

        .price-val {
            font-size: 26px;
            font-weight: 800;
            color: var(--text-dark);
            margin: 15px 0;
        }

        .price-val span {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 400;
        }

        /* 培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .train-card {
            background: #fff;
            padding: 25px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            border-bottom: 4px solid var(--accent-cyan);
        }

        .train-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .train-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .comment-card {
            background: #fff;
            padding: 25px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
        }

        .comment-text {
            font-size: 14px;
            color: var(--text-dark);
            font-style: italic;
            margin-bottom: 15px;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .user-avatar-dot {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--rainbow-gradient);
        }

        .user-info h5 {
            font-size: 13px;
            font-weight: 700;
        }

        .user-info span {
            font-size: 11px;
            color: var(--text-muted);
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        details {
            background: #fff;
            padding: 16px 20px;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            border: 1px solid rgba(0,0,0,0.02);
        }

        summary {
            font-weight: 700;
            cursor: pointer;
            outline: none;
            font-size: 15px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        summary::-webkit-details-marker {
            display: none;
        }

        summary::after {
            content: "+";
            font-size: 20px;
            color: var(--primary);
            font-weight: bold;
        }

        details[open] summary::after {
            content: "-";
        }

        .faq-answer {
            margin-top: 12px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 需求匹配与表单 */
        .matching-form-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            background: #fff;
            border-radius: 24px;
            box-shadow: var(--card-shadow);
            padding: 40px;
            border: 1px solid rgba(0,0,0,0.02);
        }

        .form-side h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid #e5e7eb;
            outline: none;
            font-size: 14px;
            transition: border 0.3s;
        }

        .form-control:focus {
            border-color: var(--primary);
        }

        .submit-btn {
            width: 100%;
            background: var(--rainbow-gradient);
            color: #fff;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: transform 0.3s;
        }

        .submit-btn:hover {
            transform: translateY(-2px);
        }

        .matching-info {
            background: var(--rainbow-soft);
            padding: 30px;
            border-radius: 16px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        /* 行业资讯 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .news-card {
            background: #fff;
            padding: 24px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            border-left: 4px solid var(--accent-yellow);
        }

        .news-card:nth-child(even) {
            border-left-color: var(--accent-cyan);
        }

        .news-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .news-card a {
            color: var(--primary);
            text-decoration: none;
            font-size: 13px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            margin-top: 15px;
        }

        /* 悬浮客服 */
        .float-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: #fff;
            padding: 15px;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            text-align: center;
            max-width: 140px;
            border: 1px solid rgba(0,0,0,0.05);
        }

        .float-kefu img {
            width: 100px;
            height: 100px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 8px;
        }

        .float-kefu p {
            font-size: 11px;
            font-weight: 700;
            color: var(--text-dark);
        }

        /* 页脚 */
        footer {
            background: #111827;
            color: #f3f4f6;
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo-area {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .footer-logo-area .ai-page-logo {
            filter: brightness(0) invert(1);
        }

        .footer-col h5 {
            font-size: 16px;
            margin-bottom: 20px;
            color: #fff;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: #9ca3af;
            text-decoration: none;
            font-size: 13px;
            transition: color 0.3s;
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
            color: #9ca3af;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .friend-links a {
            color: #9ca3af;
            text-decoration: none;
            font-size: 12px;
        }

        .friend-links a:hover {
            color: #fff;
        }

        /* 动画与辅助样式 */
        @keyframes bounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-5px); }
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .about-grid, .timeline-wrapper, .matching-form-wrapper, .footer-grid {
                grid-template-columns: 1fr;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn-large {
                width: 100%;
                max-width: 280px;
            }
            .float-kefu {
                display: none; /* 移动端隐藏悬浮客服，避免挡住内容 */
            }
        }