:root {
            --primary-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 50%, #db2777 100%);
            --secondary-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
            --accent-gradient: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --text-light: #94a3b8;
            --border-color: #e2e8f0;
            --primary-color: #6366f1;
            --border-radius: 12px;
            --transition-speed: 0.3s;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-speed);
        }

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

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
        }

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

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

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

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

        .nav-menu a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
        }

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

        .nav-btn {
            background: var(--primary-gradient);
            color: #fff !important;
            padding: 8px 20px;
            border-radius: 30px;
            font-weight: 600;
            box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
            transition: transform var(--transition-speed), box-shadow var(--transition-speed);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
        }

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

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

        /* 移动端侧边栏 */
        .mobile-nav {
            position: fixed;
            top: 70px;
            left: -100%;
            width: 100%;
            height: calc(100vh - 70px);
            background: #fff;
            z-index: 999;
            transition: left var(--transition-speed) ease-in-out;
            padding: 30px 20px;
            box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            overflow-y: auto;
        }

        .mobile-nav.active {
            left: 0;
        }

        .mobile-nav-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            list-style: none;
        }

        .mobile-nav-list a {
            font-size: 16px;
            font-weight: 500;
            display: block;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
        }

        /* Hero 首屏 (无图片) */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 90% 10%, rgba(124, 58, 237, 0.08) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(37, 99, 235, 0.08) 0%, transparent 40%),
                        #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: var(--primary-gradient);
            filter: blur(150px);
            opacity: 0.15;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 50%;
            pointer-events: none;
        }

        .badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary-color);
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 25px;
            letter-spacing: 1px;
            border: 1px solid rgba(99, 102, 241, 0.2);
            animation: pulse 2s infinite;
        }

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

        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 25px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            word-wrap: break-word;
        }

        .hero p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            box-shadow: 0 8px 25px rgba(124, 58, 237, 0.4);
            transition: transform var(--transition-speed), box-shadow var(--transition-speed);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(124, 58, 237, 0.5);
        }

        .btn-secondary {
            background: #fff;
            color: var(--text-dark);
            border: 1px solid var(--border-color);
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            transition: background var(--transition-speed), border-color var(--transition-speed);
        }

        .btn-secondary:hover {
            background: var(--bg-light);
            border-color: var(--text-light);
        }

        /* 统一标题 */
        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

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

        .section-header p {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto;
        }

        /* 数据指标 */
        .stats-section {
            padding: 60px 0;
            background: var(--bg-white);
            margin-top: -40px;
            border-radius: var(--border-radius);
            box-shadow: 0 20px 40px rgba(0,0,0,0.03);
            position: relative;
            z-index: 10;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            text-align: center;
        }

        .stat-item h3 {
            font-size: 40px;
            font-weight: 800;
            background: var(--secondary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 10px;
        }

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

        /* 通用区块间距 */
        section {
            padding: 90px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .about-content h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

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

        .about-list li {
            position: relative;
            padding-left: 24px;
            font-size: 14px;
            color: var(--text-dark);
            font-weight: 500;
        }

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

        .about-image-wrapper {
            position: relative;
        }

        .about-image-wrapper img {
            border-radius: var(--border-radius);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            width: 100%;
        }

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

        .service-card {
            background: var(--bg-white);
            padding: 40px 30px;
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            transition: all var(--transition-speed);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.05);
            border-color: rgba(99, 102, 241, 0.3);
        }

        .service-icon {
            width: 55px;
            height: 55px;
            border-radius: 50%;
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 25px;
            font-weight: bold;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 20px;
        }

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

        .model-tag {
            background: var(--bg-light);
            padding: 4px 10px;
            font-size: 12px;
            border-radius: 4px;
            color: var(--text-muted);
        }

        /* 一站式AIGC制作场景 */
        .scene-tabs-container {
            background: var(--bg-white);
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            overflow: hidden;
        }

        .scene-tabs {
            display: flex;
            border-bottom: 1px solid var(--border-color);
            background: #f1f5f9;
            overflow-x: auto;
        }

        .tab-btn {
            flex: 1;
            padding: 20px;
            border: none;
            background: transparent;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-muted);
            cursor: pointer;
            transition: all var(--transition-speed);
            white-space: nowrap;
            text-align: center;
        }

        .tab-btn.active {
            background: #fff;
            color: var(--primary-color);
            border-bottom: 3px solid var(--primary-color);
        }

        .tab-content {
            display: none;
            padding: 40px;
        }

        .tab-content.active {
            display: flex;
            gap: 40px;
            align-items: center;
        }

        .tab-content-text {
            flex: 1;
        }

        .tab-content-text h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .tab-content-text p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 20px;
        }

        .tab-content-image {
            flex: 1;
        }

        .tab-content-image img {
            width: 100%;
            border-radius: var(--border-radius);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

        /* 全平台模型聚合标签云 */
        .cloud-container {
            background: #fff;
            padding: 40px;
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .cloud-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 25px;
            color: var(--text-dark);
        }

        .cloud-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .cloud-tag {
            background: #f1f5f9;
            color: var(--text-dark);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition-speed);
            border: 1px solid transparent;
        }

        .cloud-tag:hover {
            background: var(--bg-light);
            border-color: var(--primary-color);
            transform: scale(1.05);
        }

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

        .academy-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: all var(--transition-speed);
        }

        .academy-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.05);
            border-color: rgba(99, 102, 241, 0.3);
        }

        .academy-body {
            padding: 30px;
        }

        .academy-badge {
            background: rgba(219, 39, 119, 0.1);
            color: #db2777;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 15px;
        }

        .academy-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .academy-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 20px;
        }

        .academy-meta {
            font-size: 13px;
            color: var(--text-light);
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
            display: flex;
            justify-content: space-between;
        }

        /* 流程步骤与技术标准 */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            position: relative;
        }

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

        .step-num {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 40px;
            background: var(--primary-gradient);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 18px;
            box-shadow: 0 4px 10px rgba(124, 58, 237, 0.2);
        }

        .process-step h3 {
            margin-top: 15px;
            font-size: 18px;
            margin-bottom: 10px;
        }

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

        /* 对比评测 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background: #fff;
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
        }

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

        th, td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        th {
            background-color: #f8fafc;
            color: var(--text-dark);
            font-weight: 700;
        }

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

        .highlight-col {
            background-color: rgba(99, 102, 241, 0.03);
            font-weight: 600;
        }

        .rating-badge {
            background: var(--accent-gradient);
            color: #fff;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 700;
        }

        /* Token 比价 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .price-card {
            background: var(--bg-white);
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            padding: 30px;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .price-card.featured {
            border-color: var(--primary-color);
            box-shadow: 0 10px 25px rgba(99,102,241,0.1);
        }

        .price-card.featured::before {
            content: "最佳推荐";
            position: absolute;
            top: 15px;
            right: -30px;
            background: var(--primary-gradient);
            color: #fff;
            font-size: 11px;
            font-weight: bold;
            padding: 4px 30px;
            transform: rotate(45deg);
        }

        .price-card h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .price-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary-color);
            margin: 15px 0;
        }

        .price-num span {
            font-size: 14px;
            color: var(--text-light);
            font-weight: normal;
        }

        .price-list {
            list-style: none;
            margin-top: 15px;
            margin-bottom: 25px;
            flex-grow: 1;
        }

        .price-list li {
            padding: 8px 0;
            border-bottom: 1px solid #f1f5f9;
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 用户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .review-card {
            background: #fff;
            padding: 30px;
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            position: relative;
        }

        .review-text {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .author-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--secondary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 16px;
        }

        .author-info h4 {
            font-size: 15px;
            font-weight: 700;
        }

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

        /* 案例与资讯 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .article-card {
            background: #fff;
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition-speed);
        }

        .article-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.05);
        }

        .article-body {
            padding: 25px;
        }

        .article-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .article-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-color);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* 智能辅助与排查 & 百科 */
        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .help-panel {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: 35px;
        }

        .help-panel h3 {
            font-size: 20px;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 10px;
        }

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

        .troubleshoot-list li {
            padding: 12px 0;
            border-bottom: 1px solid #f1f5f9;
            font-size: 14px;
        }

        .troubleshoot-list strong {
            color: var(--primary-color);
            display: block;
            margin-bottom: 4px;
        }

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

        .wiki-item dt {
            font-weight: 700;
            font-size: 15px;
            color: var(--text-dark);
        }

        .wiki-item dd {
            font-size: 13px;
            color: var(--text-muted);
            margin-left: 0;
            margin-top: 5px;
        }

        /* FAQ 手风琴 */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

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

        .faq-quest {
            padding: 20px 25px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            background: #fff;
            transition: background var(--transition-speed);
        }

        .faq-quest:hover {
            background: #f8fafc;
        }

        .faq-quest::after {
            content: '+';
            font-size: 20px;
            font-weight: normal;
            transition: transform var(--transition-speed);
        }

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

        .faq-ans {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: #f8fafc;
        }

        .faq-ans p {
            padding: 20px 25px;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

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

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

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

        .contact-icon {
            width: 45px;
            height: 45px;
            border-radius: var(--border-radius);
            background: rgba(99,102,241,0.1);
            color: var(--primary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .contact-detail h4 {
            font-size: 16px;
            margin-bottom: 5px;
        }

        .contact-detail p, .contact-detail a {
            color: var(--text-muted);
            font-size: 14px;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 15px;
        }

        .qr-item {
            text-align: center;
            background: #fff;
            padding: 15px;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            width: 130px;
        }

        .qr-item img {
            width: 100px;
            height: 100px;
            object-fit: cover;
            margin-bottom: 8px;
        }

        .qr-item p {
            font-size: 11px;
            font-weight: 600;
        }

        .contact-form-wrapper {
            background: #fff;
            padding: 40px;
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            box-shadow: 0 15px 30px rgba(0,0,0,0.02);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            background: var(--bg-light);
            transition: all var(--transition-speed);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }

        .btn-submit {
            width: 100%;
            background: var(--primary-gradient);
            color: #fff;
            padding: 14px;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 8px 20px rgba(124, 58, 237, 0.3);
            transition: all var(--transition-speed);
        }

        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 25px rgba(124, 58, 237, 0.4);
        }

        /* 页脚 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            border-bottom: 1px solid #334155;
            padding-bottom: 40px;
            margin-bottom: 30px;
        }

        .footer-brand h3 {
            color: #fff;
            margin-bottom: 15px;
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

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

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

        .footer-links a {
            font-size: 14px;
        }

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

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 15px;
        }

        .friend-links a {
            color: #94a3b8;
            font-size: 13px;
            border: 1px solid #334155;
            padding: 4px 10px;
            border-radius: 4px;
            transition: all var(--transition-speed);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
        }

        /* 悬浮组件 */
        .float-panel {
            position: fixed;
            right: 25px;
            bottom: 25px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: #fff;
            border-radius: 50%;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-speed);
            border: 1px solid var(--border-color);
            font-weight: bold;
            font-size: 13px;
            color: var(--text-dark);
            position: relative;
        }

        .float-btn:hover {
            transform: translateY(-3px);
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
        }

        .float-btn .tooltip {
            position: absolute;
            right: 65px;
            background: #0f172a;
            color: #fff;
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 12px;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition-speed);
        }

        .float-btn:hover .tooltip {
            opacity: 1;
            visibility: visible;
        }

        .float-btn .qr-hover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #fff;
            padding: 15px;
            border-radius: var(--border-radius);
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition-speed);
            text-align: center;
            border: 1px solid var(--border-color);
        }

        .float-btn:hover .qr-hover {
            opacity: 1;
            visibility: visible;
        }

        .float-btn .qr-hover img {
            width: 120px;
            height: 120px;
            display: block;
            margin-bottom: 5px;
        }

        .float-btn .qr-hover p {
            color: var(--text-dark);
            font-size: 11px;
            white-space: nowrap;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .about-grid, .contact-grid, .help-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero h1 {
                font-size: 34px;
            }
            .menu-toggle {
                display: flex;
            }
            .nav-menu {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .tab-content.active {
                flex-direction: column;
            }
            .tab-content {
                padding: 20px;
            }
            .tab-content-image {
                order: -1;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }