/* roulang page: index */
:root {
            --bg-main: #0A0F1D;
            --bg-secondary: #0F172A;
            --bg-card: rgba(30, 41, 59, 0.65);
            --bg-card-hover: rgba(45, 60, 88, 0.75);
            --border-glass: rgba(255, 255, 255, 0.08);
            --border-glass-top: rgba(255, 255, 255, 0.16);
            --blue-primary: #2563EB;
            --blue-light: #3B82F6;
            --blue-glow: rgba(59, 130, 246, 0.4);
            --green-accent: #10B981;
            --cyan-accent: #06B6D4;
            --text-title: #F8FAFC;
            --text-body: rgba(241, 245, 249, 0.85);
            --text-muted: #94A3B8;
            --radius-md: 12px;
            --radius-lg: 18px;
            --container-width: 1240px;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "Fira Code", "Courier New", monospace;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-main);
            color: var(--text-body);
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

        ul {
            list-style: none;
        }

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

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

        /* 顶部通告条 */
        .top-bar {
            background: rgba(10, 15, 29, 0.95);
            border-bottom: 1px solid var(--border-glass);
            font-size: 12px;
            color: var(--text-muted);
            padding: 8px 0;
            position: relative;
            z-index: 101;
        }
        .top-bar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-bar-left span {
            margin-right: 20px;
        }
        .top-bar-tag {
            color: var(--cyan-accent);
            border: 1px solid rgba(6, 182, 212, 0.3);
            padding: 2px 8px;
            border-radius: 4px;
            margin-right: 8px;
        }

        /* 主导航条 */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(15, 23, 42, 0.85);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-glass);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }
        .logo-box {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--blue-primary), var(--cyan-accent));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 900;
            box-shadow: 0 0 16px var(--blue-glow);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }
        .nav-link:hover, .nav-link.active {
            color: #fff;
            text-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
        }
        .btn-header {
            background: linear-gradient(135deg, var(--blue-primary), var(--blue-light));
            color: #fff;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 8px;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .btn-header:hover {
            box-shadow: 0 0 24px rgba(59, 130, 246, 0.7);
            transform: translateY(-1px);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 24px;
            cursor: pointer;
        }

        /* 通用板块设置 */
        section {
            padding: 90px 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--bg-secondary);
        }
        .section-accent {
            background: radial-gradient(circle at 50% 20%, rgba(37, 99, 235, 0.12), transparent 70%), var(--bg-main);
        }
        .section-header {
            margin-bottom: 50px;
        }
        .section-header.center {
            text-align: center;
            max-width: 780px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--blue-light);
            background: rgba(37, 99, 235, 0.12);
            border: 1px solid rgba(59, 130, 246, 0.3);
            padding: 4px 14px;
            border-radius: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 玻璃拟态卡片 */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-top: 1px solid var(--border-glass-top);
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .glass-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            border-color: rgba(59, 130, 246, 0.35);
            box-shadow: 0 16px 36px -10px rgba(37, 99, 235, 0.25);
        }

        /* 1. Hero 开发者/API 结构 */
        .hero-section {
            padding: 70px 0 100px;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.6) 0%, rgba(10, 15, 29, 1) 100%), url('/assets/images/b7f10dee6c0cc536.jpg') center/cover no-repeat;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 75% 30%, rgba(37, 99, 235, 0.2), transparent 60%);
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.95fr;
            gap: 48px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 20px;
        }
        .hero-content h1 .gradient-text {
            background: linear-gradient(135deg, #60A5FA, #34D399);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-lead {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 30px;
        }
        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 36px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--blue-primary), var(--blue-light));
            color: #fff;
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 8px;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.45);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(59, 130, 246, 0.7);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: rgba(255, 255, 255, 0.05);
            color: #fff;
            padding: 13px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.4);
        }
        .hero-metrics {
            display: flex;
            gap: 28px;
            border-top: 1px solid var(--border-glass);
            padding-top: 24px;
        }
        .hero-metric-item strong {
            display: block;
            font-size: 20px;
            color: #fff;
            font-weight: 700;
        }
        .hero-metric-item span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 开发者代码终端面板 */
        .code-terminal {
            background: rgba(15, 23, 42, 0.95);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.8), 0 0 25px rgba(37, 99, 235, 0.2);
            overflow: hidden;
        }
        .terminal-header {
            background: rgba(30, 41, 59, 0.8);
            padding: 12px 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .terminal-dots {
            display: flex;
            gap: 6px;
        }
        .dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
        }
        .dot.red { background: #EF4444; }
        .dot.yellow { background: #F59E0B; }
        .dot.green { background: #10B981; }
        .terminal-title {
            font-size: 12px;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }
        .terminal-body {
            padding: 20px;
            font-family: var(--font-mono);
            font-size: 13px;
            line-height: 1.6;
            color: #E2E8F0;
            overflow-x: auto;
        }
        .t-keyword { color: #F43F5E; }
        .t-func { color: #38BDF8; }
        .t-str { color: #34D399; }
        .t-comment { color: #64748B; font-style: italic; }
        .t-prop { color: #FBBF24; }

        /* 2. 能力概览 */
        .capabilities-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .cap-card {
            border-left: 3px solid var(--blue-primary);
        }
        .cap-card:hover {
            border-left-color: var(--cyan-accent);
        }
        .cap-icon {
            font-size: 26px;
            margin-bottom: 16px;
            display: inline-block;
        }
        .cap-card h3 {
            font-size: 18px;
            color: #fff;
            margin-bottom: 10px;
        }
        .cap-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 3. 业务场景矩阵 */
        .scene-tabs-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .scene-card {
            text-align: left;
            position: relative;
            overflow: hidden;
        }
        .scene-card .scene-tag {
            font-size: 11px;
            background: rgba(16, 185, 129, 0.15);
            color: var(--green-accent);
            padding: 2px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 12px;
        }
        .scene-card h3 {
            font-size: 17px;
            color: #fff;
            margin-bottom: 8px;
        }
        .scene-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .scene-feature-list {
            font-size: 12px;
            color: var(--text-body);
            border-top: 1px solid var(--border-glass);
            padding-top: 12px;
        }
        .scene-feature-list li {
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .scene-feature-list li::before {
            content: "✓";
            color: var(--blue-light);
            font-weight: bold;
        }

        /* 4. 方案矩阵 */
        .products-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .product-card {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            border: 1px solid var(--border-glass);
            position: relative;
        }
        .product-card.featured {
            border-color: rgba(59, 130, 246, 0.6);
            background: rgba(30, 58, 138, 0.25);
            box-shadow: 0 10px 35px -5px rgba(37, 99, 235, 0.35);
        }
        .featured-badge {
            position: absolute;
            top: -12px;
            right: 24px;
            background: linear-gradient(90deg, var(--blue-primary), var(--cyan-accent));
            color: #fff;
            font-size: 11px;
            padding: 3px 10px;
            border-radius: 12px;
            font-weight: 600;
        }
        .product-head h3 {
            font-size: 20px;
            color: #fff;
            margin-bottom: 8px;
        }
        .product-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .product-spec-list {
            margin-bottom: 28px;
        }
        .product-spec-list li {
            font-size: 13px;
            padding: 8px 0;
            border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
        }
        .product-spec-list li span:last-child {
            color: #fff;
            font-weight: 500;
        }

        /* 5. 技术架构图解与数据流向 */
        .arch-diagram-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-bottom: 30px;
        }
        .arch-step-box {
            background: rgba(15, 23, 42, 0.7);
            border: 1px solid var(--border-glass);
            padding: 24px 18px;
            border-radius: var(--radius-md);
            text-align: center;
            position: relative;
        }
        .arch-step-box::after {
            content: "→";
            position: absolute;
            right: -12px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 20px;
            color: var(--blue-light);
            z-index: 2;
        }
        .arch-step-box:last-child::after {
            display: none;
        }
        .arch-step-num {
            font-size: 12px;
            font-weight: 700;
            color: var(--cyan-accent);
            text-transform: uppercase;
            margin-bottom: 6px;
        }
        .arch-step-box h4 {
            font-size: 16px;
            color: #fff;
            margin-bottom: 8px;
        }
        .arch-step-box p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 6. 资质墙与合规背书 */
        .cert-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .cert-card {
            text-align: center;
            padding: 24px 16px;
        }
        .cert-badge-icon {
            width: 48px;
            height: 48px;
            margin: 0 auto 14px;
            background: rgba(37, 99, 235, 0.15);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--blue-light);
            border: 1px solid rgba(59, 130, 246, 0.3);
        }
        .cert-card h4 {
            font-size: 15px;
            color: #fff;
            margin-bottom: 6px;
        }
        .cert-card p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 7. 方案落地流程 */
        .process-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .process-node {
            position: relative;
        }
        .node-step {
            width: 36px;
            height: 36px;
            background: var(--blue-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            margin-bottom: 16px;
            box-shadow: 0 0 14px var(--blue-glow);
        }
        .node-content h4 {
            font-size: 16px;
            color: #fff;
            margin-bottom: 8px;
        }
        .node-content p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 8. 标杆案例 */
        .story-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .story-card {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            padding: 0;
            overflow: hidden;
        }
        .story-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .story-text {
            padding: 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .story-client-tag {
            font-size: 12px;
            color: var(--cyan-accent);
            margin-bottom: 8px;
        }
        .story-text h3 {
            font-size: 18px;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 12px;
        }
        .story-text p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 18px;
        }
        .story-result-stat {
            background: rgba(15, 23, 42, 0.6);
            padding: 10px 14px;
            border-radius: 6px;
            font-size: 13px;
            color: var(--green-accent);
            font-weight: 600;
        }

        /* 9. 关键业务数据条 */
        .stats-banner {
            background: linear-gradient(90deg, rgba(30, 41, 59, 0.9), rgba(15, 23, 42, 0.95));
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
            padding: 50px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item h3 {
            font-size: 38px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 6px;
            font-family: var(--font-sans);
        }
        .stat-item h3 span {
            color: var(--blue-light);
            font-size: 24px;
        }
        .stat-item p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 10. 用户评价与口碑 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .testimonial-quote {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-body);
            margin-bottom: 20px;
            position: relative;
        }
        .testimonial-quote::before {
            content: "“";
            font-size: 40px;
            color: rgba(59, 130, 246, 0.3);
            position: absolute;top: -18px;
            left: -12px;
            font-family: serif;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-glass);
            padding-top: 16px;
        }
        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--blue-primary), var(--cyan-accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
            font-size: 15px;
        }
        .author-info h4 {
            font-size: 14px;
            color: #fff;
        }
        .author-info span {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
        }

        /* 11. 资讯动态 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            padding: 0;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .news-thumb {
            height: 190px;
            overflow: hidden;
            position: relative;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-thumb img {
            transform: scale(1.06);
        }
        .news-content {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .news-meta {
            font-size: 12px;
            color: var(--cyan-accent);
            margin-bottom: 8px;
        }
        .news-content h3 {
            font-size: 17px;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .news-content p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .news-link {
            font-size: 13px;
            color: var(--blue-light);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-link:hover {
            color: #60A5FA;
        }

        /* 12. 合作与生态网络 */
        .partners-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .partner-box {
            background: rgba(15, 23, 42, 0.6);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 20px 12px;
            text-align: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            transition: all 0.25s ease;
        }
        .partner-box:hover {
            color: #fff;
            border-color: rgba(59, 130, 246, 0.4);
            background: rgba(30, 41, 59, 0.8);
            transform: translateY(-2px);
        }

        /* 13. 常见问答 FAQ 手风琴 */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item.active {
            border-color: rgba(59, 130, 246, 0.5);
            box-shadow: 0 4px 20px rgba(37, 99, 235, 0.15);
        }
        .faq-question {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }
        .faq-icon {
            font-size: 14px;
            transition: transform 0.3s ease;
            color: var(--blue-light);
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 240px;
            padding: 0 24px 22px;
        }

        /* 14. 询盘留资收口行动区 */
        .cta-section {
            padding: 90px 0;
            background: radial-gradient(circle at 50% 50%, rgba(37, 99, 235, 0.2), transparent 75%), var(--bg-secondary);
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(30, 41, 59, 0.8), rgba(15, 23, 42, 0.95));
            border: 1px solid rgba(59, 130, 246, 0.3);
            border-radius: var(--radius-lg);
            padding: 48px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.7);
        }
        .cta-left h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .cta-left p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .cta-security-points {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .cta-sec-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-body);
        }
        .cta-sec-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--green-accent);
        }
        .inquiry-form {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .form-group input, .form-group select {
            width: 100%;
            background: rgba(15, 23, 42, 0.7);
            border: 1px solid var(--border-glass);
            padding: 12px 16px;
            border-radius: 8px;
            color: #fff;
            font-size: 14px;
            outline: none;
            transition: all 0.25s ease;
        }
        .form-group input:focus, .form-group select:focus {
            border-color: var(--blue-light);
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.35);
            background: rgba(15, 23, 42, 0.95);
        }
        .form-submit-btn {
            background: linear-gradient(135deg, var(--blue-primary), var(--blue-light));
            color: #fff;
            padding: 14px;
            border: none;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.45);
            transition: all 0.25s ease;
        }
        .form-submit-btn:hover {
            box-shadow: 0 0 28px rgba(59, 130, 246, 0.7);
            transform: translateY(-1px);
        }

        /* 页脚 */
        .footer {
            background: #060913;
            border-top: 1px solid var(--border-glass);
            padding: 60px 0 30px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            display: inline-block;
        }
        .footer-intro {
            line-height: 1.7;
            margin-bottom: 18px;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 15px;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
        }

        /* 移动端菜单抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: rgba(10, 15, 29, 0.98);
            border-bottom: 1px solid var(--border-glass);
            padding: 24px;
            flex-direction: column;
            gap: 16px;
            z-index: 99;
        }
        .mobile-drawer.open {
            display: flex;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .capabilities-grid, .products-grid, .testimonials-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .arch-diagram-wrap, .process-timeline, .scene-tabs-grid, .cert-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .arch-step-box::after {
                display: none;
            }
            .partners-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .cta-box {
                grid-template-columns: 1fr;
                padding: 32px;
            }
            .story-card-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links, .btn-header {
                display: none;
            }
            .mobile-menu-btn {
                display: block;
            }
            .top-bar {
                display: none;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .hero-metrics {
                flex-direction: column;
                gap: 14px;
            }
            .capabilities-grid, .products-grid, .testimonials-grid, .news-grid,
            .arch-diagram-wrap, .process-timeline, .scene-tabs-grid, .cert-grid, .stats-grid {
                grid-template-columns: 1fr;
            }
            .story-card {
                grid-template-columns: 1fr;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
            .partners-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }