:root {
            --primary-color: #E60012;
            --primary-hover: #C8000F;
            --secondary-color: #FEEBEB;
            --dark-color: #1A1A1A;
            --light-color: #FFFFFF;
            --text-main: #333333;
            --text-muted: #666666;
            --border-color: #EEEEEE;
            --gradient-accent: linear-gradient(135deg, #FF4D4D 0%, #E60012 100%);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
            background-color: #FAFAFA;
            color: var(--text-main);
            line-height: 1.6;
        }

        /* 统一容器 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* 导航 */
        header {
            background-color: var(--light-color);
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

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

        .logo-area img {
            height: 45px;
            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: var(--transition);
        }

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

        .nav-btns {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .btn {
            display: inline-block;
            padding: 8px 20px;
            border-radius: 4px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            font-size: 14px;
            cursor: pointer;
            text-align: center;
        }

        .btn-primary {
            background: var(--gradient-accent);
            color: var(--light-color);
            border: none;
        }

        .btn-primary:hover {
            opacity: 0.9;
            transform: translateY(-2px);
        }

        .btn-outline {
            border: 1px solid var(--primary-color);
            color: var(--primary-color);
            background: transparent;
        }

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

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--dark-color);
        }

        /* 纯文字版首屏 Hero */
        .hero-section {
            background: linear-gradient(135deg, #1A0505 0%, #4A0E0E 50%, #1A0505 100%);
            color: var(--light-color);
            padding: 100px 0 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(230,0,18,0.15) 0%, transparent 60%);
            animation: rotateBg 20s linear infinite;
            pointer-events: none;
        }

        @keyframes rotateBg {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 850px;
            margin: 0 auto;
        }

        .hero-badge {
            background-color: rgba(230,0,18,0.2);
            border: 1px solid var(--primary-color);
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 14px;
            color: #FF8888;
            display: inline-block;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero-title {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
            color: var(--light-color);
        }

        .hero-desc {
            font-size: 18px;
            color: #CCCCCC;
            margin-bottom: 35px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .hero-actions .btn {
            padding: 12px 30px;
            font-size: 16px;
        }

        .hero-features {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 40px;
        }

        .hero-feat-item {
            text-align: center;
        }

        .hero-feat-num {
            font-size: 28px;
            font-weight: 700;
            color: #FF4D4D;
            display: block;
        }

        .hero-feat-text {
            font-size: 13px;
            color: #AAAAAA;
        }

        /* 板块通用样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-alt {
            background-color: #FFF5F5;
        }

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

        .section-tag {
            color: var(--primary-color);
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 10px;
            display: block;
        }

        .section-title {
            font-size: 28px;
            color: var(--dark-color);
            margin-bottom: 15px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
        }

        /* 平台介绍 */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .intro-text h3 {
            font-size: 22px;
            margin-bottom: 15px;
            color: var(--dark-color);
        }

        .intro-list {
            margin-top: 20px;
            list-style: none;
        }

        .intro-list li {
            margin-bottom: 12px;
            position: relative;
            padding-left: 25px;
            font-size: 15px;
        }

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

        /* AIGC服务 & 场景 */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 25px;
        }

        .service-card {
            background-color: var(--light-color);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(230,0,18,0.08);
            border-color: var(--primary-color);
        }

        .service-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
            color: var(--dark-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

        /* 支持模型展示 */
        .models-wrapper {
            margin-top: 40px;
            background-color: var(--light-color);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 30px;
        }

        .models-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            text-align: center;
        }

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

        .model-tag {
            background-color: #F5F5F5;
            color: var(--text-main);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 12px;
            transition: var(--transition);
        }

        .model-tag:hover {
            background-color: var(--primary-color);
            color: var(--light-color);
        }

        /* 一站式制作 & 标准化流程 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            text-align: center;
            background-color: var(--light-color);
            padding: 30px 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background-color: var(--primary-color);
            color: var(--light-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 15px;
            font-weight: 700;
        }

        .step-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* 行业解决方案 */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .solution-card {
            background-color: var(--light-color);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(230,0,18,0.05);
        }

        .solution-body {
            padding: 25px;
        }

        .solution-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        /* 服务网络 */
        .network-section {
            background-color: var(--light-color);
        }

        .network-map {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-around;
            gap: 20px;
            margin-top: 30px;
        }

        .network-node {
            background-color: #FAFAFA;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 15px 30px;
            text-align: center;
            flex: 1 1 200px;
        }

        .network-node h4 {
            color: var(--primary-color);
            font-size: 16px;
            margin-bottom: 5px;
        }

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

        /* 案例中心 (除首屏外，开始使用图片) */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--light-color);
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .case-img-wrapper {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: #EEE;
        }

        .case-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-card:hover .case-img-wrapper img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 20px;
        }

        .case-tag {
            background-color: var(--secondary-color);
            color: var(--primary-color);
            font-size: 11px;
            padding: 2px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 10px;
        }

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

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

        /* 对比评测 & Token比价 */
        .table-responsive {
            overflow-x: auto;
            margin-top: 30px;
            background-color: var(--light-color);
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.02);
            border: 1px solid var(--border-color);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 14px;
        }

        th, td {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border-color);
        }

        th {
            background-color: #FDF4F4;
            color: var(--dark-color);
            font-weight: 700;
        }

        .highlight-row {
            background-color: #FFFDFD;
        }

        .score-badge {
            color: var(--primary-color);
            font-weight: 700;
        }

        /* 培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .training-card {
            background-color: var(--light-color);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 8px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }

        .training-card h4 {
            font-size: 15px;
            margin-bottom: 8px;
            color: var(--dark-color);
        }

        .training-card p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 加盟代理 */
        .agent-box {
            background: linear-gradient(135deg, #FFF5F5 0%, #FFEBEB 100%);
            border: 1px solid #FFD1D1;
            border-radius: 12px;
            padding: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }

        .agent-text {
            flex: 1;
            min-width: 300px;
        }

        .agent-text h3 {
            font-size: 24px;
            color: var(--dark-color);
            margin-bottom: 10px;
        }

        .agent-text p {
            font-size: 15px;
            color: var(--text-muted);
        }

        /* 评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .comment-card {
            background-color: var(--light-color);
            border: 1px solid var(--border-color);
            padding: 25px;
            border-radius: 8px;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 15px;
        }

        .user-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: #EEE;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary-color);
            border: 1px solid var(--primary-color);
        }

        .user-meta h4 {
            font-size: 14px;
            margin-bottom: 2px;
        }

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

        .comment-body {
            font-size: 13px;
            color: var(--text-main);
        }

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

        .faq-item {
            background-color: var(--light-color);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            margin-bottom: 10px;
            overflow: hidden;
        }

        .faq-quest {
            padding: 15px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: var(--light-color);
            transition: var(--transition);
        }

        .faq-quest::after {
            content: "+";
            font-size: 20px;
            color: var(--primary-color);
        }

        .faq-item.active .faq-quest::after {
            content: "−";
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 20px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-bottom: 15px;
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }

        /* 需求表单 */
        .form-section {
            background-color: var(--light-color);
        }

        .form-container {
            max-width: 600px;
            margin: 0 auto;
            background-color: var(--light-color);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
        }

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 10px 15px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 14px;
            background-color: #FAFAFA;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            background-color: var(--light-color);
        }

        /* 资讯与百科 */
        .info-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .news-item {
            background-color: var(--light-color);
            padding: 20px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .news-title-link {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
        }

        .news-title-link:hover {
            color: var(--primary-color);
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        .encyclopedia-box {
            background-color: var(--light-color);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 20px;
        }

        .encyclopedia-box h3 {
            font-size: 16px;
            margin-bottom: 15px;
            border-bottom: 2px solid var(--primary-color);
            padding-bottom: 5px;
        }

        .wiki-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .wiki-tag {
            font-size: 12px;
            background-color: #F5F5F5;
            padding: 4px 10px;
            border-radius: 4px;
            color: var(--text-muted);
            text-decoration: none;
        }

        .wiki-tag:hover {
            background-color: var(--secondary-color);
            color: var(--primary-color);
        }

        /* 页脚 */
        footer {
            background-color: var(--dark-color);
            color: #CCCCCC;
            padding: 60px 0 30px;
        }

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

        .footer-logo img {
            height: 40px;
            margin-bottom: 15px;
        }

        .footer-info p {
            font-size: 13px;
            margin-bottom: 10px;
        }

        .footer-links h4 {
            color: var(--light-color);
            font-size: 15px;
            margin-bottom: 15px;
        }

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

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

        .footer-links ul a {
            color: #AAAAAA;
            text-decoration: none;
            font-size: 13px;
            transition: var(--transition);
        }

        .footer-links ul a:hover {
            color: var(--light-color);
        }

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

        .footer-qr img {
            max-width: 100px;
            margin-bottom: 8px;
            border-radius: 4px;
            border: 2px solid var(--light-color);
        }

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

        .friend-links {
            border-top: 1px solid #333;
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 12px;
        }

        .friend-links a {
            color: #888;
            text-decoration: none;
            transition: var(--transition);
        }

        .friend-links a:hover {
            color: var(--light-color);
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #777;
        }

        /* 侧边悬浮客服 */
        .floating-kefu {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            background-color: var(--light-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            border-radius: 8px;
            padding: 10px;
            text-align: center;
            border: 1px solid var(--border-color);
        }

        .floating-kefu img {
            width: 80px;
            height: 80px;
            border-radius: 4px;
        }

        .floating-kefu p {
            font-size: 11px;
            margin-top: 5px;
            font-weight: bold;
            color: var(--primary-color);
        }

        /* 响应式媒体查询 */
        @media (max-width: 992px) {
            .solution-grid, .cases-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--light-color);
                padding: 20px;
                box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-features {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid {
                grid-template-columns: 1fr;
            }
            .process-flow {
                grid-template-columns: 1fr;
            }
            .solution-grid, .cases-grid, .comments-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .info-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }