/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
            --accent-cyan: #06b6d4;
            --accent-orange: #f97316;
            --accent-green: #10b981;
            --bg-main: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-darker: #090d16;
            --text-dark: #0f172a;
            --text-muted: #64748b;
            --text-light: #f8fafc;
            --border-color: #e2e8f0;
            --border-dark: #334155;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-full: 9999px;
            --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 10px 25px -5px rgba(37, 99, 235, 0.08);
            --shadow-lg: 0 20px 35px -10px rgba(15, 23, 42, 0.12);
            --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.35);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-dark);
            background-color: var(--bg-main);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .top-bar {
            background: rgba(0, 0, 0, 0.3);
            font-size: 13px;
            color: #94a3b8;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .top-bar-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .top-bar-badge::before {
            content: '';
            width: 8px;
            height: 8px;
            background: var(--accent-green);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--accent-green);
        }

        .main-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.5px;
        }

        .brand-logo i {
            font-size: 26px;
            color: var(--accent-cyan);
            background: linear-gradient(135deg, var(--accent-cyan), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 28px;
        }

        .nav-links a {
            color: #cbd5e1;
            font-weight: 500;
            font-size: 15px;
            padding: 8px 4px;
            position: relative;
        }

        .nav-links a:hover {
            color: #ffffff;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0%;
            height: 2px;
            background: var(--accent-cyan);
            transition: width 0.3s;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 11px 24px;
            border-radius: var(--radius-full);
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            border: 1px solid transparent;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: #ffffff;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(37, 99, 235, 0.6);
            color: #ffffff;
        }

        .btn-outline {
            border-color: rgba(255, 255, 255, 0.2);
            color: #ffffff;
            background: rgba(255, 255, 255, 0.05);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.4);
        }

        .mobile-toggle {
            display: none;
            font-size: 24px;
            color: #ffffff;
            background: none;
            border: none;
            cursor: pointer;
        }

        /* 统一 Section 基础 */
        section {
            padding: 96px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            max-width: 780px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            padding: 4px 14px;
            border-radius: var(--radius-full);
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            margin-bottom: 14px;
        }

        .section-tag.light {
            background: rgba(6, 182, 212, 0.15);
            color: var(--accent-cyan);
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text-dark);
        }

        .section-title.light {
            color: #ffffff;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .section-desc.light {
            color: #94a3b8;
        }

        /* 1. 首屏 Hero */
        .hero-section {
            padding: 100px 0 120px;
            background-color: var(--bg-dark);
            background-image: radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.2) 0%, transparent 40%),
                              radial-gradient(circle at 90% 80%, rgba(124, 58, 237, 0.2) 0%, transparent 40%),
                              url('/assets/images/d8661ee73280edf9.webp');
            background-size: cover;
            background-position: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(9, 13, 22, 0.88);
        }

        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }

        .hero-badge-live {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-size: 13px;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }

        .hero-h1 {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 22px;
            background: linear-gradient(135deg, #ffffff 40%, #93c5fd 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-p {
            font-size: 17px;
            color: #94a3b8;
            line-height: 1.8;
            margin-bottom: 36px;
        }

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

        .hero-specs {
            display: flex;
            gap: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
        }

        .spec-item strong {
            display: block;
            font-size: 22px;
            color: #ffffff;
            font-weight: 700;
        }

        .spec-item span {
            font-size: 13px;
            color: #64748b;
        }

        /* Hero 右侧 Faux 数据榜单 */
        .hero-dashboard-panel {
            background: rgba(15, 23, 42, 0.75);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(16px);
        }

        .dashboard-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 16px;
            margin-bottom: 20px;
        }

        .dashboard-title {
            font-size: 16px;
            font-weight: 700;
            color: #f1f5f9;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .status-dot {
            width: 10px;
            height: 10px;
            background: var(--accent-green);
            border-radius: 50%;
            display: inline-block;
        }

        .dashboard-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .dash-card-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.2s;
        }

        .dash-card-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(37, 99, 235, 0.3);
            transform: translateX(4px);
        }

        .dash-item-info h4 {
            font-size: 14px;
            color: #e2e8f0;
            font-weight: 600;
            margin-bottom: 2px;
        }

        .dash-item-info p {
            font-size: 12px;
            color: #64748b;
        }

        .dash-item-metric {
            text-align: right;
        }

        .dash-item-metric span {
            display: block;
            font-size: 15px;
            font-weight: 700;
            color: var(--accent-cyan);
            font-family: monospace;
        }

        .dash-item-metric small {
            font-size: 11px;
            color: #94a3b8;
        }

        /* 2. 痛点挑战板块 */
        .challenges-section {
            background: #ffffff;
        }

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

        .challenge-card {
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            position: relative;
            transition: all 0.3s ease;
        }

        .challenge-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: #cbd5e1;
        }

        .challenge-icon {
            width: 56px;
            height: 56px;
            background: #fee2e2;
            color: #ef4444;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 24px;
        }

        .challenge-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .challenge-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 3. 架构与解决方案板块 */
        .about-section {
            background: #f1f5f9;
        }

        .about-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .about-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .about-image-wrap img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .about-badge-float {
            position: absolute;
            bottom: 24px;
            right: 24px;
            background: rgba(15, 23, 42, 0.9);
            color: #ffffff;
            padding: 16px 24px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
        }

        .about-badge-float strong {
            display: block;
            font-size: 28px;
            color: var(--accent-cyan);
            font-weight: 800;
        }

        .about-badge-float span {
            font-size: 12px;
            color: #94a3b8;
        }

        .about-content h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.4;
        }

        .about-feature-list {
            list-style: none;
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .about-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .about-feature-item i {
            font-size: 18px;
            color: var(--primary);
            margin-top: 3px;
        }

        .about-feature-item p {
            font-size: 15px;
            color: var(--text-dark);
            font-weight: 500;
        }

        /* 4. 研发优势（6张圆角大卡 3x2 网格） */
        .features-section {
            background: #ffffff;
        }

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

        .feature-card {
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
            border-color: #cbd5e1;
            background: #ffffff;
        }

        .feature-icon-box {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-md);
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 24px;
            margin-bottom: 24px;
            box-shadow: 0 8px 18px rgba(37, 99, 235, 0.25);
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .feature-tag-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
        }

        /* 5. 核心引擎与产品区 */
        .products-section {
            background: #f8fafc;
        }

        .products-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .product-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s;
            display: flex;
            flex-direction: column;
        }

        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .product-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .product-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

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

        .product-card-body {
            padding: 28px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .product-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .product-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .product-footer-action {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }

        .product-footer-action span {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }

        /* 6. 深色沉浸式技术案例区 */
        .dark-showcase-section {
            background: var(--bg-dark);
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

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

        .dark-showcase-content h3 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .dark-tech-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 30px;
        }

        .dark-tech-item {
            display: flex;
            gap: 16px;
        }

        .dark-tech-item i {
            font-size: 20px;
            color: var(--accent-cyan);
            margin-top: 4px;
        }

        .dark-tech-item h4 {
            font-size: 16px;
            color: #f1f5f9;
            margin-bottom: 4px;
        }

        .dark-tech-item p {
            font-size: 14px;
            color: #94a3b8;
            line-height: 1.6;
        }

        .dark-showcase-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 30px;
            backdrop-filter: blur(12px);
        }

        .dark-code-block {
            background: #020617;
            border-radius: var(--radius-md);
            padding: 20px;
            font-family: monospace;
            font-size: 13px;
            color: #38bdf8;
            border: 1px solid rgba(255, 255, 255, 0.05);
            overflow-x: auto;
            line-height: 1.6;
        }

        /* 7. 工作流步骤拆解 */
        .workflow-section {
            background: #ffffff;
        }

        .timeline-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .step-card {
            background: var(--bg-main);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            border: 1px solid var(--border-color);
            position: relative;
            transition: all 0.3s ease;
        }

        .step-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #ffffff;
            font-size: 18px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 8. 关键性能与服务指标统计条 */
        .metrics-section {
            background: var(--bg-darker);
            padding: 60px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .metric-badge-box {
            padding: 24px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.3s;
        }

        .metric-badge-box:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(6, 182, 212, 0.4);
            transform: translateY(-4px);
        }

        .metric-val {
            font-size: 42px;
            font-weight: 800;
            color: #ffffff;
            font-family: monospace;
            margin-bottom: 6px;
            background: linear-gradient(135deg, #ffffff, var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .metric-label {
            font-size: 14px;
            color: #94a3b8;
            font-weight: 500;
        }

        /* 9. 客户证言与开发者评价 */
        .testimonials-section {
            background: #f8fafc;
        }

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

        .testimonial-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 32px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .testimonial-quote {
            font-size: 14px;
            color: #334155;
            line-height: 1.8;
            margin-bottom: 24px;
            position: relative;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 14px;
            border-top: 1px solid #f1f5f9;
            padding-top: 16px;
        }

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #e2e8f0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
        }

        .author-meta h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-dark);
        }

        .author-meta span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 10. 平台资讯与技术洞察 */
        .news-section {
            background: #ffffff;
        }

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

        .news-card {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-main);
            transition: all 0.3s;
        }

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

        .news-content {
            padding: 24px;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: block;
        }

        .news-content h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .news-content p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 11. FAQ 手风琴 */
        .faq-section {
            background: #f1f5f9;
        }

        .faq-container {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s;
        }

        .faq-question {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question i {
            color: var(--primary);
            transition: transform 0.3s ease;
        }

        .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

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

        /* 12. 底部行动转化 CTA Banner */
        .cta-banner-section {
            background: #ffffff;
            padding: 40px 0 90px;
        }

        .cta-box {
            background: var(--primary-gradient);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            color: #ffffff;
            box-shadow: 0 20px 40px -10px rgba(37, 99, 235, 0.5);
            position: relative;
            overflow: hidden;
        }

        .cta-box h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-box p {
            font-size: 16px;
            color: #e0e7ff;
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
        }

        .btn-light {
            background: #ffffff;
            color: var(--primary-dark);
        }

        .btn-light:hover {
            background: #f8fafc;
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* 统一页脚 */
        .site-footer {
            background: var(--bg-darker);
            color: #94a3b8;
            padding: 70px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-col h4 {
            font-size: 16px;
            color: #ffffff;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .footer-contact-item i {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-grid,
            .about-split,
            .dark-showcase-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .challenges-grid,
            .features-grid,
            .products-grid,
            .testimonials-grid,
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .timeline-steps {
                grid-template-columns: repeat(2, 1fr);
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links,
            .nav-actions {
                display: none;
            }

            .mobile-toggle {
                display: block;
            }

            .hero-h1 {
                font-size: 32px;
            }

            .section-title {
                font-size: 26px;
            }

            .challenges-grid,
            .features-grid,
            .products-grid,
            .timeline-steps,
            .metrics-grid,
            .testimonials-grid,
            .news-grid,
            .footer-grid {
                grid-template-columns: 1fr;
            }

            .hero-cta-group,
            .cta-actions {
                flex-direction: column;
            }

            .btn {
                width: 100%;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 16px;
                text-align: center;
            }
        }