:root {
            --primary: #00b4d8;
            --primary-dark: #0077b6;
            --primary-light: #90e0ef;
            --accent: #00f5d4;
            --dark: #1a202c;
            --gray-dark: #2d3748;
            --gray: #4a5568;
            --gray-light: #f7fafc;
            --white: #ffffff;
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            color: var(--gray-dark);
            background-color: var(--white);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: var(--transition);
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            border-bottom: 1px solid rgba(0, 180, 216, 0.1);
        }

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

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

        .ai-page-logo {
            max-height: 45px;
            width: auto;
        }

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

        .nav-menu a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--gray-dark);
            padding: 5px 10px;
            border-radius: 4px;
        }

        .nav-menu a:hover, .nav-menu a.active {
            color: var(--primary-dark);
            background-color: rgba(0, 180, 216, 0.05);
        }

        .nav-btn {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--white) !important;
            padding: 8px 18px !important;
            border-radius: 50px !important;
            box-shadow: 0 4px 10px rgba(0, 180, 216, 0.2);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(0, 180, 216, 0.3);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 6px;
        }

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

        /* 移动端菜单激活状态 */
        .menu-toggle.open span:nth-child(1) {
            transform: translateY(9px) rotate(45deg);
        }
        .menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.open span:nth-child(3) {
            transform: translateY(-9px) rotate(-45deg);
        }

        /* 共享的Section样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid #edf2f7;
        }

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

        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title h2 {
            font-size: 2.2rem;
            color: var(--dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .section-title p {
            color: var(--gray);
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto;
        }

        /* 1. Hero 区域 (无图片) */
        .hero-section {
            padding-top: 150px;
            padding-bottom: 100px;
            background: radial-gradient(circle at 80% 20%, rgba(0, 245, 212, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(0, 180, 216, 0.08) 0%, transparent 50%),
                        var(--white);
            text-align: center;
        }

        .hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background-color: rgba(0, 180, 216, 0.1);
            color: var(--primary-dark);
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 25px;
            letter-spacing: 1px;
            border: 1px solid rgba(0, 180, 216, 0.2);
        }

        .hero-title {
            font-size: 2.8rem;
            line-height: 1.3;
            color: var(--dark);
            margin-bottom: 25px;
            font-weight: 800;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--gray);
            margin-bottom: 40px;
            line-height: 1.7;
        }

        .hero-btn-group {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }

        .btn-main {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--white);
            font-weight: 600;
            padding: 15px 35px;
            border-radius: 50px;
            font-size: 1.1rem;
            box-shadow: 0 10px 20px rgba(0, 180, 216, 0.25);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-main:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(0, 180, 216, 0.35);
            color: var(--white);
        }

        .btn-sub {
            background-color: var(--white);
            color: var(--gray-dark);
            font-weight: 600;
            padding: 15px 35px;
            border-radius: 50px;
            font-size: 1.1rem;
            border: 2px solid #e2e8f0;
        }

        .btn-sub:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

        /* 数据指标卡片 */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 50px;
        }

        .stat-card {
            background: var(--white);
            padding: 25px 20px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
            border: 1px solid #edf2f7;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-light);
            box-shadow: 0 10px 25px rgba(0, 180, 216, 0.08);
        }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 5px;
        }

        .stat-label {
            color: var(--gray);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* 2. 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-content h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .about-content p {
            color: var(--gray);
            margin-bottom: 15px;
            font-size: 1.05rem;
        }

        .about-features {
            margin-top: 30px;
        }

        .about-feat-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            margin-bottom: 15px;
        }

        .about-feat-icon {
            color: var(--primary);
            font-weight: bold;
            font-size: 1.2rem;
        }

        .about-feat-text h4 {
            color: var(--dark);
            font-size: 1.1rem;
            margin-bottom: 4px;
        }

        .about-feat-text p {
            font-size: 0.95rem;
            color: var(--gray);
        }

        /* 3. 全平台 AIGC 服务体系 */
        .grid-3col {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .card-service {
            background-color: var(--white);
            padding: 40px 30px;
            border-radius: 16px;
            border: 1px solid #e2e8f0;
            transition: var(--transition);
        }

        .card-service:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 10px 30px rgba(0, 180, 216, 0.1);
        }

        .service-icon-box {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            background-color: rgba(0, 180, 216, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
            color: var(--primary-dark);
            font-size: 1.8rem;
        }

        .card-service h3 {
            font-size: 1.3rem;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .card-service p {
            font-size: 0.95rem;
            color: var(--gray);
            margin-bottom: 20px;
        }

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

        .model-tag {
            background-color: var(--gray-light);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            color: var(--gray-dark);
            border: 1px solid #edf2f7;
        }

        /* 4. 全自动 AIGC 制作流程 */
        .workflow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .workflow-step {
            background-color: var(--white);
            padding: 30px 20px;
            border-radius: 12px;
            border: 1px solid #edf2f7;
            text-align: center;
            position: relative;
            transition: var(--transition);
        }

        .workflow-step:hover {
            border-color: var(--primary);
            transform: translateY(-5px);
        }

        .step-num {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 20px;
        }

        .workflow-step h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .workflow-step p {
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* 5. 全行业解决方案 */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            background-color: var(--white);
            border-radius: 16px;
            border: 1px solid #edf2f7;
            overflow: hidden;
            transition: var(--transition);
        }

        .solution-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 10px 35px rgba(0,0,0,0.05);
        }

        .solution-body {
            padding: 30px;
        }

        .solution-tag {
            color: var(--primary-dark);
            font-weight: 600;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 10px;
            display: inline-block;
        }

        .solution-body h3 {
            font-size: 1.4rem;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .solution-body p {
            font-size: 0.95rem;
            color: var(--gray);
            margin-bottom: 20px;
        }

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

        .solution-list li {
            margin-bottom: 8px;
            font-size: 0.9rem;
            color: var(--gray-dark);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .solution-list li::before {
            content: "✓";
            color: var(--primary);
            font-weight: bold;
        }

        /* 6. 全国服务网络 */
        .network-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .network-map-visual {
            background: linear-gradient(135deg, #e0f2fe, #ccfbf1);
            border-radius: 20px;
            height: 350px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(0, 180, 216, 0.2);
        }

        .network-map-visual::before {
            content: "";
            position: absolute;
            width: 200%;
            height: 200%;
            background: radial-gradient(rgba(0, 180, 216, 0.1) 10%, transparent 10.5%);
            background-size: 20px 20px;
            top: -50%;
            left: -50%;
        }

        .map-center {
            position: relative;
            background-color: var(--white);
            padding: 15px 30px;
            border-radius: 50px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            z-index: 2;
            border: 2px solid var(--primary);
            text-align: center;
        }

        .map-center h4 {
            color: var(--primary-dark);
            font-size: 1.2rem;
        }

        .map-dots {
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
        }

        .map-dot {
            position: absolute;
            width: 12px;
            height: 12px;
            background-color: var(--primary);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--primary);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(0.9); opacity: 0.6; }
            50% { transform: scale(1.4); opacity: 1; box-shadow: 0 0 15px rgba(0, 180, 216, 0.8); }
            100% { transform: scale(0.9); opacity: 0.6; }
        }

        /* 7. 标准化服务全流程 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .process-card {
            background-color: var(--white);
            border: 1px solid #edf2f7;
            border-radius: 12px;
            padding: 25px 20px;
            text-align: center;
            transition: var(--transition);
        }

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

        .process-icon {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 15px;
        }

        .process-card h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .process-card p {
            font-size: 0.85rem;
            color: var(--gray);
        }

        /* 8. 技术标准 */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
        }

        .tech-card {
            background-color: var(--white);
            padding: 30px 25px;
            border-radius: 12px;
            border-top: 4px solid var(--primary);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .tech-card h4 {
            font-size: 1.2rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .tech-card p {
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* 9. 客户案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
        }

        .case-main {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .case-side {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .case-img-wrap {
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid #edf2f7;
            position: relative;
        }

        .case-img-wrap img {
            width: 100%;
            transition: var(--transition);
        }

        .case-img-wrap:hover img {
            transform: scale(1.03);
        }

        .case-info {
            padding: 15px;
            background-color: var(--white);
        }

        .case-info h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .case-info p {
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* 10. 对比评测 */
        .compare-table-wrapper {
            overflow-x: auto;
            border-radius: 16px;
            border: 1px solid #edf2f7;
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            background-color: var(--white);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

        .compare-table th, .compare-table td {
            padding: 18px 24px;
            border-bottom: 1px solid #edf2f7;
        }

        .compare-table th {
            background-color: var(--gray-light);
            font-weight: 700;
            color: var(--dark);
        }

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

        .highlight-col {
            background-color: rgba(0, 180, 216, 0.03);
            font-weight: 600;
        }

        .rating-badge {
            display: inline-flex;
            align-items: center;
            background-color: #ffb703;
            color: var(--dark);
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: bold;
            font-size: 0.9rem;
        }

        .star-rating {
            color: #ffb703;
            font-size: 1.2rem;
            margin-bottom: 5px;
        }

        .rating-container {
            display: flex;
            align-items: center;
            gap: 15px;
            background: linear-gradient(135deg, var(--gray-light), #e0f2fe);
            padding: 20px;
            border-radius: 12px;
            margin-bottom: 30px;
            border: 1px solid rgba(0, 180, 216, 0.1);
        }

        /* 11. 智能需求匹配 (表单) */
        .form-section {
            background: linear-gradient(135deg, #f0fdfa, #f0f9ff);
        }

        .form-container {
            max-width: 800px;
            margin: 0 auto;
            background-color: var(--white);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.04);
            border: 1px solid rgba(0, 180, 216, 0.1);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group.full-width {
            grid-column: span 2;
        }

        .form-label {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--dark);
        }

        .form-control {
            padding: 12px 16px;
            border: 1px solid #cbd5e1;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
            background-color: var(--gray-light);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: var(--white);
            box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1);
        }

        .form-btn {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--white);
            font-weight: 600;
            padding: 14px;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
            width: 100%;
        }

        .form-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 180, 216, 0.3);
        }

        /* 12. Token比价参考 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .token-card {
            background-color: var(--white);
            border-radius: 12px;
            border: 1px solid #edf2f7;
            padding: 30px 25px;
            text-align: center;
            transition: var(--transition);
        }

        .token-card:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 25px rgba(0,0,0,0.04);
        }

        .token-card.best-value {
            border: 2px solid var(--primary);
            position: relative;
        }

        .token-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--primary);
            color: var(--white);
            padding: 3px 12px;
            font-size: 0.75rem;
            border-radius: 50px;
            font-weight: bold;
        }

        .token-card h4 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .token-price {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin: 15px 0;
        }

        .token-price span {
            font-size: 0.9rem;
            color: var(--gray);
            font-weight: normal;
        }

        .token-features {
            list-style: none;
            margin-bottom: 20px;
            text-align: left;
        }

        .token-features li {
            font-size: 0.85rem;
            color: var(--gray);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .token-features li::before {
            content: "•";
            color: var(--primary);
            font-weight: bold;
        }

        /* 13. 职业技术培训 & 14. 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .training-card {
            background-color: var(--white);
            border-radius: 12px;
            border: 1px solid #edf2f7;
            padding: 25px 20px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 8px 25px rgba(0, 180, 216, 0.08);
        }

        .training-card h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .training-card p {
            font-size: 0.85rem;
            color: var(--gray);
            margin-bottom: 15px;
        }

        .training-cert {
            display: inline-block;
            background-color: rgba(0, 245, 212, 0.1);
            color: #00b4d8;
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        /* 15. 帮助中心 & 18. 网站术语百科 */
        .help-terms-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

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

        .term-item h5 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .term-item p {
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* 16. 常见用户问题 FAQ */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid #edf2f7;
            padding: 15px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            padding: 10px 0;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--primary-dark);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: var(--gray);
            font-size: 0.95rem;
            padding-right: 20px;
        }

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

        .faq-icon {
            font-size: 1.2rem;
            transition: transform 0.3s ease;
        }

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

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

        /* 17. 常见问题自助排查 */
        .troubleshoot-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .troubleshoot-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 25px;
            border-left: 4px solid var(--primary-dark);
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
        }

        .troubleshoot-card h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .troubleshoot-card p {
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* 6条用户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 40px;
        }

        .comment-card {
            background-color: var(--white);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid #edf2f7;
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .comment-text {
            font-style: italic;
            color: var(--gray);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

        .comment-user {
            display: flex;
            flex-direction: column;
        }

        .comment-name {
            font-weight: 700;
            color: var(--dark);
            font-size: 0.95rem;
        }

        .comment-role {
            font-size: 0.8rem;
            color: var(--primary-dark);
        }

        /* 19. 行业资讯 / 知识库 */
        .articles-wrapper {
            margin-top: 30px;
        }

        .article-list {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            list-style: none;
        }

        .article-item {
            background-color: var(--white);
            border-radius: 8px;
            border: 1px solid #edf2f7;
            padding: 20px;
            transition: var(--transition);
        }

        .article-item:hover {
            transform: translateY(-3px);
            border-color: var(--primary);
            box-shadow: 0 5px 15px rgba(0, 180, 216, 0.05);
        }

        .article-item a {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .article-item a:hover {
            color: var(--primary-dark);
        }

        .article-date {
            font-size: 0.75rem;
            color: var(--gray);
        }

        /* 20. 联系我们 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }

        .contact-icon {
            font-size: 1.5rem;
            color: var(--primary-dark);
            background-color: rgba(0, 180, 216, 0.08);
            width: 45px;
            height: 45px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .contact-detail h4 {
            color: var(--dark);
            margin-bottom: 5px;
        }

        .contact-detail p {
            color: var(--gray);
            font-size: 0.95rem;
        }

        .qrcode-group {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .qrcode-item {
            text-align: center;
            background-color: var(--white);
            border-radius: 12px;
            border: 1px solid #edf2f7;
            padding: 20px;
        }

        .qrcode-item img {
            width: 130px;
            height: 130px;
            margin: 0 auto 10px;
        }

        .qrcode-item p {
            font-size: 0.85rem;
            color: var(--gray-dark);
            font-weight: 600;
        }

        /* 浮动客服入口 */
        .floating-service {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--white);
            border-radius: 50%;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid #edf2f7;
            position: relative;
        }

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

        .float-btn:hover svg {
            fill: var(--white);
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
            fill: var(--primary-dark);
        }

        .qrcode-hover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: var(--white);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: none;
            width: 150px;
            text-align: center;
            border: 1px solid #edf2f7;
        }

        .qrcode-hover img {
            width: 120px;
            height: 120px;
            margin-bottom: 5px;
        }

        .qrcode-hover p {
            font-size: 0.8rem;
            color: var(--gray-dark);
        }

        .float-btn:hover .qrcode-hover {
            display: block;
        }

        /* 页脚与友情链接 */
        footer {
            background-color: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px;
            border-top: 1px solid #2d3748;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 50px;
            margin-bottom: 40px;
        }

        .footer-logo {
            margin-bottom: 20px;
        }

        .footer-desc {
            font-size: 0.9rem;
            max-width: 400px;
            margin-bottom: 20px;
        }

        .footer-links-title {
            color: var(--white);
            font-size: 1.1rem;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links a {
            color: #94a3b8;
            font-size: 0.85rem;
        }

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

        .footer-bottom {
            border-top: 1px solid #2d3748;
            padding-top: 25px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
        }

        .footer-bottom p {
            color: #64748b;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3col, .workflow-timeline, .solution-grid, .process-steps, .tech-grid, .token-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .troubleshoot-grid, .article-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            .nav-menu {
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--white);
                flex-direction: column;
                padding: 20px;
                gap: 15px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
                border-top: 1px solid #edf2f7;
                display: none;
            }

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

            .hero-title {
                font-size: 2.2rem;
            }

            .about-grid, .network-wrapper, .help-terms-grid, .contact-grid, .footer-grid {
                grid-template-columns: 1fr;
            }

            .grid-3col, .workflow-timeline, .solution-grid, .process-steps, .tech-grid, .token-grid, .comments-grid, .training-grid, .troubleshoot-grid, .article-list {
                grid-template-columns: 1fr;
            }

            .form-grid {
                grid-template-columns: 1fr;
            }

            .form-group.full-width {
                grid-column: span 1;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
        }