:root {
            --primary-color: #FACC15; /* 鲜黄耀眼色 */
            --primary-hover: #E2B80D;
            --dark-color: #1E293B; /* 深 slate 灰 */
            --text-main: #334155;
            --bg-light: #F8FAFC;
            --bg-white: #FFFFFF;
            --border-color: #E2E8F0;
            --accent-red: #EF4444;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --container-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

        a {
            color: var(--dark-color);
            text-decoration: none;
            transition: all 0.3s;
        }

        /* 统一外层居中容器 */
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        header {
            background-color: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

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

        .brand-name {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--dark-color);
            letter-spacing: 0.5px;
        }

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

        .nav-menu a {
            font-size: 0.95rem;
            font-weight: 500;
            padding: 6px 12px;
            border-radius: 6px;
        }

        .nav-menu a:hover {
            background-color: rgba(250, 204, 21, 0.15);
            color: var(--dark-color);
        }

        .nav-btn {
            background-color: var(--primary-color);
            color: var(--dark-color);
            padding: 8px 20px;
            border-radius: 8px;
            font-weight: 600;
            border: 2px solid var(--dark-color);
            box-shadow: 2px 2px 0px var(--dark-color);
            transition: all 0.2s;
        }

        .nav-btn:hover {
            transform: translate(-2px, -2px);
            box-shadow: 4px 4px 0px var(--dark-color);
            background-color: var(--primary-hover);
        }

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

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--dark-color);
            border-radius: 2px;
            transition: 0.3s;
        }

        /* 统一段落结构样式 */
        section {
            padding: 80px 0;
        }

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

        .section-title h2 {
            font-size: 2.2rem;
            color: var(--dark-color);
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 5px;
            background-color: var(--primary-color);
            border: 1px solid var(--dark-color);
            border-radius: 3px;
        }

        .section-title p {
            margin-top: 15px;
            font-size: 1.1rem;
            color: #64748B;
        }

        /* Hero首屏 - 严禁出现图片 */
        .hero-section {
            background: radial-gradient(circle at 10% 20%, rgba(250, 204, 21, 0.15) 0%, rgba(255, 255, 255, 1) 90%);
            padding: 100px 0 80px;
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            color: var(--dark-color);
            margin-bottom: 24px;
            font-weight: 900;
        }

        .hero-content h1 span {
            background: linear-gradient(120deg, var(--primary-color) 0%, #F59E0B 100%);
            padding: 0 8px;
            border-radius: 4px;
            box-shadow: inset 0 -12px 0 rgba(250, 204, 21, 0.4);
        }

        .hero-content p {
            font-size: 1.2rem;
            color: #475569;
            margin-bottom: 35px;
        }

        .hero-btns {
            display: flex;
            gap: 16px;
            margin-bottom: 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 30px;
            font-size: 1.05rem;
            font-weight: 700;
            border-radius: 10px;
            transition: all 0.2s;
            cursor: pointer;
        }

        .btn-main {
            background-color: var(--primary-color);
            color: var(--dark-color);
            border: 2px solid var(--dark-color);
            box-shadow: 3px 3px 0px var(--dark-color);
        }

        .btn-main:hover {
            transform: translate(-3px, -3px);
            box-shadow: 6px 6px 0px var(--dark-color);
            background-color: var(--primary-hover);
        }

        .btn-sub {
            background-color: var(--bg-white);
            color: var(--dark-color);
            border: 2px solid var(--dark-color);
            box-shadow: 3px 3px 0px rgba(0,0,0,0.1);
        }

        .btn-sub:hover {
            transform: translate(-2px, -2px);
            box-shadow: 5px 5px 0px rgba(0,0,0,0.15);
            background-color: var(--bg-light);
        }

        /* 纯 CSS 科技感面板代替图片 */
        .hero-visual {
            background: var(--bg-white);
            border: 3px solid var(--dark-color);
            border-radius: 16px;
            padding: 30px;
            box-shadow: 8px 8px 0px rgba(0,0,0,0.15);
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .visual-header {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: #EF4444;
        }
        .dot:nth-child(2) { background-color: #FBBF24; }
        .dot:nth-child(3) { background-color: #10B981; }

        .visual-bar {
            height: 14px;
            background-color: var(--bg-light);
            border-radius: 7px;
            width: 100%;
        }

        .visual-card {
            background-color: rgba(250, 204, 21, 0.1);
            border: 1px dashed var(--primary-color);
            padding: 15px;
            border-radius: 8px;
            font-size: 0.9rem;
            color: var(--dark-color);
            font-weight: 600;
        }

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

        .stat-card {
            background-color: var(--bg-white);
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            box-shadow: 4px 4px 0px rgba(0,0,0,0.05);
            transition: transform 0.2s;
        }

        .stat-card:hover {
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark-color);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: #64748B;
        }

        /* 关于我们 & 软件介绍 */
        .about-section {
            background-color: var(--bg-white);
        }

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

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

        .about-text p {
            color: #475569;
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

        .about-features {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-top: 25px;
        }

        .about-features li {
            position: relative;
            padding-left: 28px;
            font-weight: 600;
            color: var(--dark-color);
        }

        .about-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: -2px;
            width: 20px;
            height: 20px;
            background-color: var(--primary-color);
            border: 1px solid var(--dark-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
        }

        /* 全平台AIGC服务体系 */
        .service-section {
            background-color: var(--bg-light);
        }

        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background-color: var(--bg-white);
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 4px 4px 0px var(--dark-color);
            transition: all 0.2s;
        }

        .service-card:hover {
            transform: translate(-3px, -3px);
            box-shadow: 7px 7px 0px var(--dark-color);
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.3rem;
            color: var(--dark-color);
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 0.95rem;
            color: #64748B;
        }

        /* 支持的AI平台 - 标签云 */
        .platform-cloud {
            margin-top: 50px;
            background: var(--bg-white);
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
        }

        .platform-cloud h4 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            color: var(--dark-color);
        }

        .tags-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .platform-tag {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: all 0.2s;
        }

        .platform-tag:hover {
            background-color: var(--primary-color);
            border-color: var(--dark-color);
            transform: scale(1.05);
        }

        /* 自动化制作流程 & 标准服务流程 */
        .flow-section {
            background-color: var(--bg-white);
        }

        .flow-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .flow-step {
            background: var(--bg-white);
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            position: relative;
            box-shadow: 4px 4px 0px rgba(0,0,0,0.05);
        }

        .step-num {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--primary-color);
            border: 2px solid var(--dark-color);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            box-shadow: 2px 2px 0px var(--dark-color);
        }

        .flow-step h3 {
            margin-top: 15px;
            font-size: 1.25rem;
            color: var(--dark-color);
            margin-bottom: 10px;
        }

        .flow-step p {
            font-size: 0.9rem;
            color: #64748B;
        }

        /* 全行业解决方案 */
        .solution-section {
            background-color: var(--bg-light);
        }

        .solution-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .solution-card {
            background: var(--bg-white);
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            padding: 30px;
            transition: all 0.3s;
        }

        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .solution-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .solution-card h3::before {
            content: '●';
            color: var(--primary-color);
            font-size: 1.2rem;
        }

        /* 全国服务网络 & 技术标准 */
        .network-section {
            background-color: var(--bg-white);
        }

        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .map-mockup {
            background-color: var(--bg-light);
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
        }

        .map-graphic {
            width: 100%;
            height: 200px;
            background: radial-gradient(circle, var(--primary-color) 10%, transparent 10.5%);
            background-size: 20px 20px;
            opacity: 0.3;
            margin-bottom: 20px;
        }

        .tech-standards {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .standard-item {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .standard-num {
            font-weight: 800;
            color: var(--dark-color);
            background-color: var(--primary-color);
            width: 30px;
            height: 30px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* 客户案例中心 */
        .cases-section {
            background-color: var(--bg-light);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background: var(--bg-white);
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 4px 4px 0px rgba(0,0,0,0.05);
        }

        .case-img-container {
            aspect-ratio: 16/9;
            background-color: #E2E8F0;
            overflow: hidden;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }

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

        .case-content {
            padding: 20px;
        }

        .case-tag {
            background-color: var(--primary-color);
            color: var(--dark-color);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 3px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 10px;
        }

        .case-content h3 {
            font-size: 1.15rem;
            color: var(--dark-color);
            margin-bottom: 8px;
        }

        .case-content p {
            font-size: 0.9rem;
            color: #64748B;
        }

        /* 对比评测 */
        .comparison-section {
            background-color: var(--bg-white);
        }

        .score-box {
            background-color: var(--primary-color);
            border: 2px solid var(--dark-color);
            padding: 24px;
            border-radius: 12px;
            margin-bottom: 40px;
            display: flex;
            align-items: center;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 20px;
            box-shadow: 4px 4px 0px var(--dark-color);
        }

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

        .score-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark-color);
        }

        .score-val {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--dark-color);
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 2px solid var(--dark-color);
            border-radius: 12px;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            background-color: var(--bg-white);
            text-align: left;
        }

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

        th {
            background-color: var(--dark-color);
            color: var(--bg-white);
            font-weight: 600;
        }

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

        tr:nth-child(even) td {
            background-color: var(--bg-light);
        }

        /* Token 比价 */
        .price-section {
            background-color: var(--bg-light);
        }

        .price-table {
            width: 100%;
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            background-color: var(--bg-white);
            overflow: hidden;
        }

        .price-row {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr 1fr;
            border-bottom: 1px solid var(--border-color);
            align-items: center;
        }

        .price-row:last-child {
            border-bottom: none;
        }

        .price-header {
            background-color: var(--dark-color);
            color: var(--bg-white);
            font-weight: 600;
            padding: 15px 20px;
        }

        .price-cell {
            padding: 15px 20px;
        }

        /* 培训业务 */
        .train-section {
            background-color: var(--bg-white);
        }

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

        .train-card {
            background-color: var(--bg-light);
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            transition: all 0.2s;
        }

        .train-card:hover {
            background-color: var(--bg-white);
            box-shadow: 4px 4px 0px var(--dark-color);
            transform: translate(-2px, -2px);
        }

        .train-icon {
            font-size: 2rem;
            margin-bottom: 15px;
        }

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

        .train-card p {
            font-size: 0.85rem;
            color: #64748B;
        }

        /* 用户评论 - 6条 */
        .comments-section {
            background-color: var(--bg-light);
        }

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

        .comment-card {
            background-color: var(--bg-white);
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            padding: 24px;
            box-shadow: 4px 4px 0px rgba(0,0,0,0.05);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .comment-text {
            font-size: 0.95rem;
            color: #475569;
            margin-bottom: 20px;
            position: relative;
        }

        .comment-text::before {
            content: '“';
            font-size: 3rem;
            color: var(--primary-color);
            position: absolute;
            top: -25px;
            left: -10px;
            opacity: 0.5;
            z-index: 0;
        }

        .comment-text p {
            position: relative;
            z-index: 1;
        }

        .comment-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }

        .author-avatar {
            width: 40px;
            height: 40px;
            background-color: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            border: 1px solid var(--dark-color);
        }

        .author-info h4 {
            font-size: 0.9rem;
            color: var(--dark-color);
        }

        .author-info span {
            font-size: 0.75rem;
            color: #64748B;
        }

        /* 需求匹配表单与联系我们 */
        .contact-section {
            background-color: var(--bg-white);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .contact-form-box {
            background-color: var(--bg-light);
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 6px 6px 0px rgba(0,0,0,0.05);
        }

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

        .form-group {
            margin-bottom: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-label {
            font-weight: 700;
            color: var(--dark-color);
            font-size: 0.9rem;
        }

        .form-control {
            border: 2px solid var(--dark-color);
            padding: 12px;
            border-radius: 8px;
            font-size: 0.95rem;
            background-color: var(--bg-white);
            outline: none;
            transition: border-color 0.2s;
        }

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

        .btn-submit {
            width: 100%;
            background-color: var(--primary-color);
            color: var(--dark-color);
            font-weight: 700;
            border: 2px solid var(--dark-color);
            border-radius: 8px;
            padding: 14px;
            cursor: pointer;
            box-shadow: 3px 3px 0px var(--dark-color);
            transition: all 0.2s;
        }

        .btn-submit:hover {
            background-color: var(--primary-hover);
            transform: translate(-2px, -2px);
            box-shadow: 5px 5px 0px var(--dark-color);
        }

        /* 联系信息 */
        .contact-info-box {
            background-color: var(--dark-color);
            color: var(--bg-white);
            border-radius: 12px;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .info-header h3 {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .info-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .info-list li {
            font-size: 0.95rem;
        }

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

        .qr-item {
            text-align: center;
            font-size: 0.8rem;
        }

        .qr-item img {
            width: 100px;
            height: 100px;
            border-radius: 8px;
            background-color: white;
            padding: 5px;
            margin-bottom: 8px;
        }

        /* 常见问题自助排查与术语百科 */
        .help-section {
            background-color: var(--bg-light);
        }

        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .help-box {
            background-color: var(--bg-white);
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            padding: 30px;
        }

        .help-box h3 {
            font-size: 1.3rem;
            color: var(--dark-color);
            margin-bottom: 20px;
            border-left: 5px solid var(--primary-color);
            padding-left: 10px;
        }

        .trouble-list, .wiki-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .trouble-list li, .wiki-list li {
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 12px;
        }

        .trouble-list li:last-child, .wiki-list li:last-child {
            border-bottom: none;
        }

        .trouble-list h4, .wiki-list h4 {
            font-size: 1rem;
            color: var(--dark-color);
            margin-bottom: 5px;
        }

        .trouble-list p, .wiki-list p {
            font-size: 0.85rem;
            color: #64748B;
        }

        /* FAQ 折叠面板 */
        .faq-section {
            background-color: var(--bg-white);
        }

        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            border: 2px solid var(--dark-color);
            border-radius: 8px;
            background-color: var(--bg-light);
            overflow: hidden;
            transition: all 0.3s;
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 700;
            color: var(--dark-color);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: var(--bg-light);
        }

        .faq-question::after {
            content: '+';
            font-size: 1.4rem;
            font-weight: 400;
            transition: transform 0.3s;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: var(--bg-white);
        }

        .faq-answer-content {
            padding: 20px 24px;
            font-size: 0.95rem;
            color: #475569;
            border-top: 1px solid var(--border-color);
        }

        .faq-item.active .faq-question::after {
            content: '−';
        }

        .faq-item.active .faq-answer {
            max-height: 200px; /* 动态控制的高度 */
        }

        /* 行业资讯 / 知识库 */
        .news-section {
            background-color: var(--bg-light);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .news-card {
            background-color: var(--bg-white);
            border: 2px solid var(--dark-color);
            border-radius: 12px;
            padding: 24px;
            box-shadow: 4px 4px 0px rgba(0,0,0,0.05);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-meta {
            font-size: 0.8rem;
            color: #64748B;
            margin-bottom: 10px;
        }

        .news-card h3 {
            font-size: 1.15rem;
            color: var(--dark-color);
            margin-bottom: 15px;
            line-height: 1.4;
        }

        .news-card p {
            font-size: 0.9rem;
            color: #64748B;
            margin-bottom: 20px;
        }

        .news-link {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--dark-color);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

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

        /* 页脚与友情链接 */
        footer {
            background-color: var(--dark-color);
            color: #94A3B8;
            padding: 60px 0 30px;
            border-top: 3px solid var(--primary-color);
        }

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

        .footer-brand h4 {
            color: var(--bg-white);
            font-size: 1.3rem;
            margin-bottom: 15px;
        }

        .footer-links h4 {
            color: var(--bg-white);
            font-size: 1rem;
            margin-bottom: 15px;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #94A3B8;
            font-size: 0.9rem;
        }

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

        .friend-links {
            border-top: 1px solid #334155;
            padding-top: 20px;
            margin-bottom: 20px;
        }

        .friend-links h5 {
            color: var(--bg-white);
            margin-bottom: 10px;
            font-size: 0.9rem;
        }

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

        .friend-links-wrapper a {
            color: #94A3B8;
            font-size: 0.85rem;
        }

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

        .copyright-area {
            border-top: 1px solid #334155;
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
        }

        /* 浮动客服入口 */
        .floating-contact {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            background-color: var(--primary-color);
            border: 2px solid var(--dark-color);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 2px 2px 8px rgba(0,0,0,0.15);
            position: relative;
        }

        .float-btn:hover {
            background-color: var(--primary-hover);
        }

        .float-tooltip {
            position: absolute;
            right: 60px;
            background-color: var(--bg-white);
            border: 2px solid var(--dark-color);
            padding: 10px;
            border-radius: 8px;
            display: none;
            width: 150px;
            text-align: center;
            box-shadow: var(--shadow-md);
        }

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

        .float-tooltip img {
            width: 100px;
            height: 100px;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 50px 0;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--bg-white);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
                box-shadow: var(--shadow-md);
            }
            .nav-menu.show {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .about-grid {
                grid-template-columns: 1fr;
            }
            .flow-timeline {
                grid-template-columns: 1fr;
            }
            .flow-step {
                padding-top: 30px;
            }
            .network-grid {
                grid-template-columns: 1fr;
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .comments-grid {
                grid-template-columns: 1fr;
            }
            .contact-grid {
                grid-template-columns: 1fr;
            }
            .form-group-row {
                grid-template-columns: 1fr;
            }
            .help-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }