:root {
            --primary: #0B57D0;
            --primary-hover: #0045B5;
            --primary-light: #EBF1FA;
            --accent: #00F2FE;
            --dark: #0F172A;
            --gray-text: #475569;
            --light-bg: #F8FAFC;
            --border-color: #E2E8F0;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition);
        }

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

        .logo-container {
            display: flex;
            align-items: center;
        }

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

        nav {
            display: flex;
            align-items: center;
            gap: 20px;
        }

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

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

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

        .btn-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #FFFFFF !important;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }

        .btn-nav:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 5px;
        }

        .nav-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background: var(--dark);
            margin: 4px 0;
            transition: var(--transition);
        }

        /* Hero首屏 (纯CSS与文字几何风，禁止出现图片) */
        .hero {
            position: relative;
            background: radial-gradient(circle at 80% 20%, #EBF1FA 0%, #FFFFFF 100%);
            padding: 160px 0 100px 0;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(11, 87, 208, 0.08) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }

        .hero h1 {
            font-size: 44px;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 24px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        .hero p {
            font-size: 18px;
            color: var(--gray-text);
            margin-bottom: 36px;
            max-width: 650px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, #0072FF 100%);
            color: #FFFFFF;
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(11, 87, 208, 0.3);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(11, 87, 208, 0.4);
        }

        .btn-secondary {
            background: #FFFFFF;
            color: var(--dark);
            border: 1px solid var(--border-color);
            padding: 14px 32px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background: var(--light-bg);
            border-color: #CBD5E1;
            transform: translateY(-2px);
        }

        /* 核心数据卡片 */
        .stats-section {
            padding: 60px 0;
            background: #FFFFFF;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1-tr);
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }

        .stat-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 30px 24px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02), 0 2px 4px -1px rgba(0,0,0,0.01);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 15px -3px rgba(11, 87, 208, 0.1);
            border-color: var(--primary);
        }

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1;
        }

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

        /* 板块通用头部 */
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px auto;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
            position: relative;
        }

        .section-header p {
            font-size: 16px;
            color: var(--gray-text);
        }

        /* 关于我们与平台介绍 */
        .section-padding {
            padding: 80px 0;
        }

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

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

        .about-text h3 {
            font-size: 24px;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .about-text p {
            color: var(--gray-text);
            margin-bottom: 20px;
            font-size: 15px;
        }

        .features-list {
            list-style: none;
        }

        .features-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-size: 15px;
            font-weight: 500;
        }

        .features-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--primary);
            font-weight: bold;
        }

        .about-media {
            background: linear-gradient(135deg, var(--primary) 0%, #1e3a8a 100%);
            border-radius: 16px;
            padding: 40px;
            color: #FFFFFF;
            position: relative;
            box-shadow: 0 20px 25px -5px rgba(11, 87, 208, 0.2);
        }

        .about-media-badge {
            background: rgba(255,255,255,0.2);
            backdrop-filter: blur(5px);
            padding: 6px 12px;
            border-radius: 4px;
            display: inline-block;
            font-size: 12px;
            margin-bottom: 20px;
        }

        /* AIGC 服务与模型 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

        .service-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary);
            font-size: 20px;
            font-weight: bold;
        }

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

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

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 40px;
            justify-content: center;
            background: #FFFFFF;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .model-tag {
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            color: var(--dark);
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 500;
        }

        /* 解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        @media (max-width: 992px) {
            .solutions-grid {
                grid-template-columns: 1fr;
            }
        }

        .solution-card {
            background: #FFFFFF;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.08);
        }

        .solution-info {
            padding: 24px;
        }

        .solution-info h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .solution-info p {
            color: var(--gray-text);
            font-size: 14px;
            margin-bottom: 16px;
        }

        /* 流程与标准 */
        .process-flow {
            display: flex;
            justify-content: space-between;
            position: relative;
            flex-wrap: wrap;
            gap: 20px;
        }

        .process-step {
            flex: 1;
            min-width: 200px;
            text-align: center;
            position: relative;
            background: #FFFFFF;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #FFFFFF;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px auto;
            font-weight: bold;
        }

        .step-num-title {
            font-weight: 700;
            margin-bottom: 8px;
        }

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

        /* 案例中心 (此处包含方版和横版素材图) */
        .case-gallery {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        @media (max-width: 768px) {
            .case-gallery {
                grid-template-columns: 1fr;
            }
        }

        .case-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
        }

        .case-img-wrap {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: #EBF1FA;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .case-desc {
            padding: 20px;
        }

        .case-desc h4 {
            font-size: 16px;
            margin-bottom: 8px;
        }

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

        /* 对比评测 */
        .comparison-table-wrapper {
            overflow-x: auto;
            background: #FFFFFF;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .comparison-table th {
            background: var(--light-bg);
            font-weight: 700;
        }

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

        .comparison-table .highlight-row {
            background: var(--primary-light);
            font-weight: 600;
        }

        .badge-star {
            background: #F59E0B;
            color: #FFFFFF;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 12px;
        }

        /* 需求匹配与表单 */
        .form-section {
            background: var(--primary-light);
            border-radius: 16px;
            padding: 40px;
        }

        .form-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        @media (max-width: 768px) {
            .form-layout {
                grid-template-columns: 1fr;
            }
        }

        .form-info h3 {
            font-size: 28px;
            margin-bottom: 16px;
        }

        .form-info p {
            color: var(--gray-text);
            margin-bottom: 24px;
        }

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

        .input-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            font-size: 14px;
        }

        .input-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background: #FFFFFF;
            font-size: 14px;
            transition: var(--transition);
        }

        .input-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(11,87,208,0.1);
        }

        .form-submit-btn {
            width: 100%;
            background: var(--primary);
            color: #FFFFFF;
            padding: 14px;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
        }

        .form-submit-btn:hover {
            background: var(--primary-hover);
        }

        /* Token 比价 */
        .token-compare-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .token-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            transition: var(--transition);
        }

        .token-card:hover {
            border-color: var(--primary);
            box-shadow: 0 6px 12px rgba(0,0,0,0.03);
        }

        .token-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
        }

        .token-name {
            font-weight: 700;
            font-size: 18px;
        }

        .token-price {
            color: #10B981;
            font-weight: 700;
        }

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

        .training-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 24px;
            text-align: center;
        }

        .training-icon {
            width: 50px;
            height: 50px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px auto;
            font-weight: 700;
        }

        .training-card h4 {
            font-size: 16px;
            margin-bottom: 8px;
        }

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

        /* 帮助中心与 FAQ */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            padding: 10px 0;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: var(--gray-text);
            font-size: 14px;
        }

        .faq-answer-inner {
            padding: 10px 0;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
        }

        .faq-question::after {
            content: '+';
            font-size: 20px;
            color: var(--gray-text);
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            content: '-';
            transform: rotate(180deg);
        }

        /* 客户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        @media (max-width: 576px) {
            .reviews-grid {
                grid-template-columns: 1fr;
            }
        }

        .review-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
        }

        .review-text {
            font-size: 14px;
            color: var(--gray-text);
            margin-bottom: 16px;
            font-style: italic;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .user-avatar {
            width: 40px;
            height: 40px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .user-info h5 {
            font-size: 14px;
            margin-bottom: 2px;
        }

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

        /* 行业资讯与最新文章 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .article-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            transition: var(--transition);
        }

        .article-card:hover {
            border-color: var(--primary);
            box-shadow: 0 10px 15px rgba(0,0,0,0.03);
        }

        .article-card h4 {
            font-size: 16px;
            margin-bottom: 12px;
        }

        .article-card a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
        }

        .article-card a:hover {
            text-decoration: underline;
        }

        /* 联系我们与加盟代理 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        @media (max-width: 768px) {
            .contact-layout {
                grid-template-columns: 1fr;
            }
        }

        .contact-info-list {
            margin-top: 24px;
        }

        .contact-info-item {
            margin-bottom: 20px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }

        .contact-icon {
            font-size: 20px;
            color: var(--primary);
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 30px;
            flex-wrap: wrap;
        }

        .qr-item {
            text-align: center;
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 16px;
            border-radius: 8px;
            width: 140px;
        }

        .qr-item img {
            width: 100px;
            height: 100px;
            display: block;
            margin: 0 auto 8px auto;
        }

        .qr-item span {
            font-size: 12px;
            color: var(--gray-text);
        }

        /* 友情链接与页脚 */
        footer {
            background: #0B132B;
            color: #8C9BB4;
            padding: 60px 0 30px 0;
            font-size: 14px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }

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

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

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

        .footer-brand p {
            margin-bottom: 16px;
        }

        .footer-links h5 {
            color: #FFFFFF;
            font-size: 16px;
            margin-bottom: 16px;
        }

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

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

        .footer-links ul li a {
            color: #8C9BB4;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links ul li a:hover {
            color: #FFFFFF;
        }

        .friend-links {
            border-top: 1px solid rgba(255,255,255,0.05);
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 12px;
        }

        .friend-links a {
            color: #8C9BB4;
            text-decoration: none;
        }

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

        .copyright-bar {
            border-top: 1px solid rgba(255,255,255,0.05);
            padding-top: 24px;
            text-align: center;
            font-size: 12px;
        }

        /* 浮动客服 */
        .float-contact {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
            text-decoration: none;
        }

        .float-btn:hover {
            background: var(--primary-hover);
            transform: scale(1.05);
        }

        .float-qr-popup {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 16px;
            border-radius: 8px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            display: none;
            text-align: center;
            width: 140px;
        }

        .float-qr-popup img {
            width: 110px;
            height: 110px;
        }

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

        /* 移动端菜单激活样式 */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #FFFFFF;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 16px;
                box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            }

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

            .nav-toggle {
                display: block;
            }

            .about-layout {
                grid-template-columns: 1fr;
            }
        }