:root {
            --primary-gradient: linear-gradient(135deg, #4f46e5, #7c3aed, #db2777);
            --btn-gradient: linear-gradient(135deg, #6366f1, #a855f7, #ec4899);
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-dark: #0f172a;
            --text-muted: #475569;
            --border-color: #e2e8f0;
            --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }

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

        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;
        }

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        section {
            padding: 5rem 0;
        }

        .section-title {
            text-align: center;
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 1rem;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-desc {
            text-align: center;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 3.5rem;
            font-size: 1.1rem;
        }

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            transition: var(--transition);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 4.5rem;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .ai-page-logo {
            height: 2.5rem;
            width: auto;
            object-fit: contain;
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        nav {
            display: flex;
            align-items: center;
            gap: 1.5rem;
        }

        .nav-link {
            text-decoration: none;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .nav-link:hover {
            color: #4f46e5;
        }

        .nav-btn {
            background: var(--btn-gradient);
            color: white;
            padding: 0.5rem 1.25rem;
            border-radius: 9999px;
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 600;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .nav-btn:hover {
            opacity: 0.9;
            transform: translateY(-1px);
        }

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

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--text-dark);
            transition: var(--transition);
        }

        /* 纯文本/渐变首屏 (无图片) */
        .hero {
            padding: 9rem 0 6rem;
            background: radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 40%),
                        radial-gradient(circle at 20% 80%, rgba(236, 72, 153, 0.1) 0%, transparent 40%),
                        var(--bg-white);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(99, 102, 241, 0.08);
            color: #4f46e5;
            padding: 0.35rem 1rem;
            border-radius: 9999px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(99, 102, 241, 0.15);
        }

        .hero-title-h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.025em;
            margin-bottom: 1.5rem;
            color: var(--text-dark);
        }

        .hero-title-h1 span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 2.5rem;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 1.25rem;
            margin-bottom: 3.5rem;
        }

        .btn-primary {
            background: var(--btn-gradient);
            color: white;
            padding: 0.85rem 2rem;
            border-radius: 0.5rem;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
        }

        .btn-secondary {
            background: var(--bg-white);
            color: var(--text-dark);
            border: 1px solid var(--border-color);
            padding: 0.85rem 2rem;
            border-radius: 0.5rem;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background: var(--bg-light);
            border-color: #cbd5e1;
            transform: translateY(-2px);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .stat-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 2rem 1.5rem;
            border-radius: 1rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(99, 102, 241, 0.3);
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            background: var(--btn-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 关于我们 */
        .about-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            color: var(--text-dark);
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        .about-feat-item {
            background: var(--bg-white);
            padding: 1.25rem;
            border-radius: 0.75rem;
            border: 1px solid var(--border-color);
        }

        .about-feat-item h4 {
            font-weight: 700;
            color: #4f46e5;
            margin-bottom: 0.5rem;
        }

        .about-feat-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }

        .about-card-decor {
            background: var(--primary-gradient);
            border-radius: 1.5rem;
            padding: 3rem;
            color: white;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .about-card-decor::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 120%;
            height: 120%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
            pointer-events: none;
        }

        .about-decor-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }

        .about-decor-list {
            list-style: none;
        }

        .about-decor-list li {
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.05rem;
        }

        .about-decor-list li::before {
            content: '✓';
            font-weight: bold;
        }

        /* 全平台 AIGC 服务 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

        .service-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            padding: 2.25rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(168, 85, 247, 0.3);
        }

        .service-icon {
            width: 3.5rem;
            height: 3.5rem;
            border-radius: 0.75rem;
            background: rgba(99, 102, 241, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: #4f46e5;
            font-size: 1.5rem;
            font-weight: bold;
        }

        .service-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 1.25rem;
        }

        /* 标签云 - 30+模型聚合展示 */
        .model-tags-wrap {
            margin-top: 4rem;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 1.25rem;
            padding: 2.5rem;
            box-shadow: var(--shadow-sm);
        }

        .model-tags-title {
            text-align: center;
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--text-dark);
        }

        .tags-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.75rem;
        }

        .tag-item {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 0.5rem 1rem;
            border-radius: 9999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            cursor: default;
        }

        .tag-item:hover {
            background: var(--btn-gradient);
            color: white;
            border-color: transparent;
            transform: scale(1.05);
        }

        /* 一站式AIGC制作 & 解决方案 */
        .grid-2col {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2.5rem;
        }

        .content-box {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 1.25rem;
            padding: 2.5rem;
            box-shadow: var(--shadow-sm);
        }

        .content-box h3 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 1.25rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .content-box h3 span {
            color: #db2777;
        }

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

        .bullet-list li {
            margin-bottom: 1rem;
            position: relative;
            padding-left: 1.5rem;
            color: var(--text-muted);
        }

        .bullet-list li::before {
            content: "✦";
            position: absolute;
            left: 0;
            color: #7c3aed;
            font-weight: bold;
        }

        /* 全国服务网络 */
        .network-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
        }

        .network-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 0.75rem;
            padding: 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }

        .network-city {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }

        .network-status {
            font-size: 0.85rem;
            color: #10b981;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }

        .network-status::before {
            content: '';
            display: inline-block;
            width: 8px;
            height: 8px;
            background: #10b981;
            border-radius: 50%;
        }

        /* 标准化流程与技术标准 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding: 2rem 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 3rem;
            width: 50%;
            padding: 0 2rem;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-badge {
            position: absolute;
            top: 0;
            width: 2.5rem;
            height: 2.5rem;
            border-radius: 50%;
            background: var(--btn-gradient);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            z-index: 10;
        }

        .timeline-item:nth-child(odd) .timeline-badge {
            right: -1.25rem;
        }

        .timeline-item:nth-child(even) .timeline-badge {
            left: -1.25rem;
        }

        .timeline-panel {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 0.75rem;
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
        }

        .timeline-panel h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: #4f46e5;
        }

        .timeline-panel p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* 案例中心 */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .gallery-card {
            background: var(--bg-white);
            border-radius: 1rem;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .gallery-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .gallery-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #e2e8f0;
        }

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

        .gallery-card:hover .gallery-img-wrap img {
            transform: scale(1.05);
        }

        .gallery-info {
            padding: 1.5rem;
        }

        .gallery-info h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .gallery-info p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 对比评测 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        th, td {
            padding: 1.25rem 1.5rem;
            border-bottom: 1px solid var(--border-color);
        }

        th {
            background: #f1f5f9;
            font-weight: 700;
            color: var(--text-dark);
        }

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

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

        .score-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 1.25rem;
            padding: 2.5rem;
            margin-bottom: 3rem;
            box-shadow: var(--shadow-sm);
            text-align: center;
            flex-wrap: wrap;
        }

        .score-big {
            font-size: 4rem;
            font-weight: 900;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1;
        }

        .stars {
            font-size: 1.5rem;
            color: #fbbf24;
            margin: 0.5rem 0;
        }

        /* Token 比价 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        .token-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            padding: 2rem;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .token-card.hot::before {
            content: '推荐';
            position: absolute;
            top: 15px;
            right: -30px;
            background: #ec4899;
            color: white;
            font-size: 0.75rem;
            font-weight: bold;
            padding: 0.25rem 2rem;
            transform: rotate(45deg);
        }

        .token-name {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .token-price {
            font-size: 1.75rem;
            font-weight: 800;
            color: #4f46e5;
            margin-bottom: 1rem;
        }

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

        /* 职业与人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
            gap: 1.5rem;
        }

        .course-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 0.75rem;
            padding: 1.75rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .course-card:hover {
            border-color: #4f46e5;
            box-shadow: var(--shadow-md);
        }

        .course-badge {
            background: rgba(124, 58, 237, 0.08);
            color: #7c3aed;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.25rem 0.6rem;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 1rem;
        }

        .course-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .course-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* FAQ 手风琴 */
        .faq-accordion {
            max-width: 850px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 0.75rem;
            margin-bottom: 1rem;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-header {
            padding: 1.25rem 1.5rem;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-icon {
            transition: transform 0.3s;
            font-size: 1.25rem;
            color: var(--text-muted);
        }

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

        .faq-text {
            padding: 1.5rem;
            font-size: 0.95rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        .faq-item.active .faq-content {
            max-height: 500px;
        }

        /* 用户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .review-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 1rem;
            padding: 2rem;
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .review-text {
            font-style: italic;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            font-size: 0.95rem;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .user-avatar {
            width: 2.75rem;
            height: 2.75rem;
            border-radius: 50%;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            font-size: 1.1rem;
        }

        .user-info h5 {
            font-weight: 700;
            font-size: 0.95rem;
        }

        .user-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 需求表单 */
        .form-wrap {
            max-width: 650px;
            margin: 0 auto;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 1.25rem;
            padding: 3rem 2.5rem;
            box-shadow: var(--shadow-lg);
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.5rem;
            font-size: 0.95rem;
        }

        .form-control {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: 0.5rem;
            font-family: inherit;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: #4f46e5;
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
        }

        .btn-submit {
            width: 100%;
            background: var(--btn-gradient);
            color: white;
            border: none;
            padding: 0.85rem;
            border-radius: 0.5rem;
            font-size: 1.05rem;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
            transition: var(--transition);
        }

        .btn-submit:hover {
            opacity: 0.95;
            transform: translateY(-1px);
        }

        /* 浮动客服 */
        .floating-contact {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            z-index: 999;
        }

        .float-item {
            width: 3.5rem;
            height: 3.5rem;
            border-radius: 50%;
            background: var(--bg-white);
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }

        .float-item:hover {
            transform: translateY(-3px);
            background: var(--bg-light);
        }

        .float-icon {
            font-size: 1.25rem;
            font-weight: bold;
        }

        .qr-popover {
            position: absolute;
            bottom: 4rem;
            right: 0;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 1rem;
            border-radius: 0.75rem;
            box-shadow: var(--shadow-lg);
            display: none;
            text-align: center;
            width: 160px;
        }

        .qr-popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 0.5rem;
        }

        .qr-popover p {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin: 0;
        }

        .float-item:hover .qr-popover {
            display: block;
        }

        /* 页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 4rem 0 2rem;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-col h5 {
            color: white;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
        }

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

        .footer-col ul li {
            margin-bottom: 0.75rem;
        }

        .footer-col ul li a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: white;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }

        .friend-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.85rem;
        }

        .friend-links a:hover {
            color: white;
        }

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 2rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1.5rem;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .hero-title-h1 {
                font-size: 2.5rem;
            }
            .about-wrap {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
            .timeline::before {
                left: 2rem;
            }
            .timeline-item {
                width: 100%;
                left: 0 !important;
                padding-left: 4rem;
                padding-right: 0;
                text-align: left !important;
            }
            .timeline-badge {
                left: 0.75rem !important;
            }
        }

        @media (max-width: 768px) {
            nav {
                display: none;
                position: absolute;
                top: 4.5rem;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 1.5rem;
                box-shadow: var(--shadow-md);
                border-bottom: 1px solid var(--border-color);
            }
            nav.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions a {
                width: 100%;
                max-width: 300px;
                text-align: center;
            }
            .section-title {
                font-size: 1.85rem;
            }
        }