:root {
            --primary: #7000FF;      /* 霓虹紫 */
            --secondary: #00E5FF;    /* 极光蓝 */
            --accent: #FF3366;       /* 明艳粉红 */
            --dark: #0A0E1A;         /* 深蓝黑 */
            --light: #F8F9FD;        /* 亮白底色 */
            --text-main: #1E2229;    /* 深灰正文 */
            --text-muted: #64748B;   /* 辅助文字 */
            --border: #E2E8F0;       /* 边框色 */
            --card-bg: #FFFFFF;      /* 卡片白 */
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--light);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

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

        .logo-area img {
            height: 40px;
            width: auto;
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
        }

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

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

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff !important;
            padding: 8px 16px;
            border-radius: 30px;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(112, 0, 255, 0.3);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            border-radius: 3px;
            transition: 0.3s;
        }

        /* Hero首屏 - 撞色无图 */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(0, 229, 255, 0.15), transparent 40%),
                        radial-gradient(circle at 10% 80%, rgba(255, 51, 102, 0.1), transparent 40%),
                        #FAF9F6;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 120%;
            height: 120%;
            background-image: radial-gradient(var(--border) 1px, transparent 0);
            background-size: 24px 24px;
            opacity: 0.4;
            pointer-events: none;
        }

        .badge-premium {
            display: inline-flex;
            align-items: center;
            background: rgba(112, 0, 255, 0.08);
            border: 1px solid rgba(112, 0, 255, 0.2);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 1px;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.03); }
            100% { transform: scale(1); }
        }

        .hero h1 {
            font-size: clamp(32px, 5vw, 56px);
            line-height: 1.2;
            font-weight: 900;
            letter-spacing: -1px;
            margin-bottom: 24px;
        }

        .hero h1 span.gradient-text {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
        }

        .hero-desc {
            font-size: clamp(16px, 2vw, 20px);
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s;
            cursor: pointer;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, #5200C5 100%);
            color: #fff;
            box-shadow: 0 4px 20px rgba(112, 0, 255, 0.4);
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(112, 0, 255, 0.6);
        }

        .btn-secondary {
            background: #fff;
            color: var(--text-main);
            border: 2px solid var(--text-main);
        }

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

        /* 数据指标卡片 */
        .stats-bar {
            margin-top: 60px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }

        .stat-card {
            background: #fff;
            padding: 24px;
            border-radius: 16px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            border: 1px solid var(--border);
            transition: transform 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--secondary);
        }

        .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 通用区块样式 */
        section {
            padding: 100px 0;
            border-bottom: 1px solid var(--border);
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }

        .section-tag {
            color: var(--accent);
            font-weight: 700;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 12px;
            display: block;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
        }

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

        /* 平台介绍 */
        .platform-intro {
            background-color: #fff;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .intro-text h3 {
            font-size: 24px;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .intro-features {
            list-style: none;
            margin-top: 30px;
        }

        .intro-features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 16px;
            font-weight: 500;
        }

        .intro-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: bold;
            font-size: 18px;
        }

        /* 服务能力卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: #fff;
            padding: 40px 30px;
            border-radius: 20px;
            border: 1px solid var(--border);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.05);
            border-color: transparent;
        }

        .service-card:hover::before {
            transform: scaleX(1);
        }

        .service-icon {
            font-size: 40px;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
            font-weight: 700;
        }

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

        /* 模型聚合滚动 */
        .model-marquee {
            background-color: var(--dark);
            color: #fff;
            padding: 40px 0;
            overflow: hidden;
            white-space: nowrap;
            position: relative;
        }

        .marquee-track {
            display: inline-flex;
            gap: 30px;
            animation: marquee 30s linear infinite;
        }

        .marquee-item {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 8px 16px;
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: 30px;
            background: rgba(255,255,255,0.05);
        }

        @keyframes marquee {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        /* 标准化流程时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--border);
            transform: translateX(-50%);
        }

        .timeline-item {
            margin-bottom: 50px;
            position: relative;
            width: 50%;
            padding: 0 40px;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-badge {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--accent);
            position: absolute;
            top: 5px;
            z-index: 10;
        }

        .timeline-item:nth-child(odd) .timeline-badge {
            right: -10px;
        }

        .timeline-item:nth-child(even) .timeline-badge {
            left: -10px;
        }

        .timeline-content {
            background: #fff;
            padding: 24px;
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }

        /* 对比评测 */
        .rating-box {
            background: linear-gradient(135deg, var(--dark) 0%, #151F38 100%);
            color: #fff;
            border-radius: 24px;
            padding: 50px;
            margin-bottom: 50px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 30px;
        }

        .rating-info h3 {
            font-size: 28px;
            margin-bottom: 12px;
        }

        .rating-stars {
            color: #FFB800;
            font-size: 24px;
            margin-bottom: 8px;
        }

        .rating-score {
            font-size: 64px;
            font-weight: 900;
            color: var(--secondary);
            line-height: 1;
        }

        .rating-score span {
            font-size: 24px;
            color: #fff;
            font-weight: 500;
        }

        .comparison-table-wrapper {
            overflow-x: auto;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .comparison-table th, .comparison-table td {
            padding: 18px 24px;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }

        .comparison-table th {
            background-color: rgba(112, 0, 255, 0.05);
            font-weight: 700;
            color: var(--primary);
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        /* 案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .case-card {
            background: #fff;
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border);
            transition: transform 0.3s;
        }

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

        .case-img-container {
            width: 100%;
            height: 220px;
            overflow: hidden;
            background-color: #eee;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-info h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        /* Token 比价工具 */
        .token-calc-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 40px;
            max-width: 600px;
            margin: 0 auto;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1.5px solid var(--border);
            border-radius: 10px;
            font-size: 16px;
            transition: border-color 0.3s;
            outline: none;
        }

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

        .calc-result {
            margin-top: 24px;
            padding: 20px;
            background: rgba(0, 229, 255, 0.05);
            border-radius: 10px;
            border: 1px dashed var(--secondary);
        }

        /* 人工智能培训时间线 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .training-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 24px;
            text-align: center;
            transition: all 0.3s;
        }

        .training-card:hover {
            border-color: var(--accent);
            box-shadow: 0 8px 20px rgba(255,51,102,0.08);
        }

        /* 用户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .comment-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            border: 1px solid var(--border);
            position: relative;
        }

        .comment-rating {
            color: #FFB800;
            margin-bottom: 12px;
        }

        .comment-text {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-style: italic;
        }

        .comment-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .author-info h4 {
            font-size: 14px;
            margin: 0;
        }

        .author-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: all 0.3s;
        }

        .faq-trigger {
            width: 100%;
            padding: 20px 24px;
            background: none;
            border: none;
            text-align: left;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-trigger::after {
            content: '+';
            font-size: 20px;
            color: var(--primary);
            transition: transform 0.3s;
        }

        .faq-item.active .faq-trigger::after {
            transform: rotate(45deg);
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 15px;
        }

        .faq-item.active .faq-content {
            padding-bottom: 20px;
        }

        /* 需求表单 */
        .contact-section {
            background-color: #fff;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info-card {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: #fff;
            padding: 40px;
            border-radius: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-info-list {
            list-style: none;
            margin: 40px 0;
        }

        .contact-info-list li {
            margin-bottom: 20px;
            font-size: 16px;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

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

        .qr-item img {
            width: 120px;
            height: 120px;
            border-radius: 10px;
            background: #fff;
            padding: 5px;
            margin-bottom: 8px;
        }

        .qr-item p {
            font-size: 12px;
        }

        .form-card {
            background: #fff;
            border: 1px solid var(--border);
            padding: 40px;
            border-radius: 24px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

        /* 最新文章 */
        .articles-list {
            margin-top: 30px;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .article-item {
            background: #fff;
            border: 1px solid var(--border);
            padding: 16px 20px;
            border-radius: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.3s;
            text-decoration: none;
            color: var(--text-main);
        }

        .article-item:hover {
            border-color: var(--primary);
            transform: translateX(5px);
        }

        .article-item span.date {
            color: var(--text-muted);
            font-size: 14px;
        }

        /* 标签云与百科 */
        .encyclopedia-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
        }

        .wiki-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 30px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-item {
            padding: 8px 16px;
            background: rgba(112, 0, 255, 0.05);
            color: var(--primary);
            border-radius: 30px;
            font-size: 13px;
            text-decoration: none;
            transition: all 0.3s;
        }

        .tag-item:hover {
            background: var(--primary);
            color: #fff;
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 30px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 20px;
        }

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

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .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;
        }

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

        .friend-links a {
            color: rgba(255,255,255,0.5);
            text-decoration: none;
            transition: color 0.3s;
        }

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

        /* 浮动客服 */
        .float-contact {
            position: fixed;
            right: 24px;
            bottom: 24px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
            cursor: pointer;
            transition: transform 0.2s;
            position: relative;
        }

        .float-btn:hover {
            transform: scale(1.1);
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: #fff;
        }

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 16px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            display: none;
            width: 160px;
            text-align: center;
            color: var(--text-main);
        }

        .qr-popover img {
            width: 100%;
            height: auto;
            border-radius: 6px;
            margin-bottom: 8px;
        }

        .qr-popover p {
            font-size: 12px;
            margin: 0;
        }

        .float-btn:hover .qr-popover {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #fff;
                border-bottom: 1px solid var(--border);
                padding: 20px;
                gap: 15px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }

            .nav-menu.active {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .intro-grid, .contact-grid, .encyclopedia-grid {
                grid-template-columns: 1fr;
            }

            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
                text-align: left !important;
            }

            .timeline-item:nth-child(even) {
                left: 0;
            }

            .timeline-badge {
                left: 10px !important;
            }
        }