/* roulang page: index */
:root {
            --bg-base: #0B0D13;
            --bg-surface: #141721;
            --bg-elevated: #1C202F;
            --bg-darker: #050608;
            --primary: #6366F1;
            --primary-light: #818CF8;
            --primary-glow: rgba(99, 102, 241, 0.25);
            --signal-green: #10B981;
            --neon-cyan: #06B6D4;
            --text-main: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-dim: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.16);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 32px rgba(99, 102, 241, 0.16);
            --container-max: 1240px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        button, input, textarea, select {
            font-family: inherit;
            color: inherit;
        }

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

        .section-header {
            text-align: center;
            max-width: 820px;
            margin: 0 auto 56px auto;
        }

        .section-header .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            background: rgba(99, 102, 241, 0.1);
            border: 1px solid rgba(99, 102, 241, 0.3);
            border-radius: 9999px;
            color: var(--primary-light);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        .section-header h2 {
            font-size: 2.25rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.7;
        }

        /* 顶部信号条与主导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 13, 19, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-dim);
        }

        .signal-bar {
            background: #07080C;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.8rem;
            color: var(--text-muted);
            height: 38px;
            display: flex;
            align-items: center;
        }

        .signal-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .signal-tags {
            display: flex;
            align-items: center;
            gap: 18px;
        }

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

        .signal-badge::before {
            content: "";
            width: 6px;
            height: 6px;
            background-color: var(--neon-cyan);
            border-radius: 50%;
        }

        .support-pulse {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .pulse-dot {
            width: 8px;
            height: 8px;
            background-color: var(--signal-green);
            border-radius: 50%;
            position: relative;
        }

        .pulse-dot::after {
            content: "";
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            border: 1px solid var(--signal-green);
            animation: pulse-ring 2s infinite ease-out;
        }

        @keyframes pulse-ring {
            0% { transform: scale(0.8); opacity: 1; }
            100% { transform: scale(2.2); opacity: 0; }
        }

        .main-nav-bar {
            height: 68px;
            display: flex;
            align-items: center;
        }

        .main-nav-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.5px;
        }

        .brand-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary), var(--neon-cyan));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 12px var(--primary-glow);
        }

        .brand-icon svg {
            width: 18px;
            height: 18px;
            fill: #fff;
        }

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

        .nav-links a {
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
        }

        .nav-links a:hover, .nav-links a.active {
            color: var(--text-main);
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0%;
            height: 2px;
            background: var(--primary);
            transition: width 0.25s ease;
        }

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

        .nav-cta-btn {
            background: linear-gradient(135deg, var(--primary), #4F46E5);
            color: #fff;
            padding: 9px 20px;
            border-radius: 9999px;
            font-size: 0.9rem;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.15);
            box-shadow: 0 4px 14px var(--primary-glow);
            cursor: pointer;
        }

        .nav-cta-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(99, 102, 241, 0.35);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--text-main);
            margin: 5px 0;
            transition: 0.3s;
        }

        /* 首屏 Hero (API与开发者代码架构流) */
        .hero-section {
            position: relative;
            padding: 72px 0 96px 0;
            background: radial-gradient(circle at 75% 20%, rgba(99, 102, 241, 0.15), transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.08), transparent 45%),
                        var(--bg-base);
            border-bottom: 1px solid var(--border-dim);
            overflow: hidden;
        }

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

        .hero-content h1 {
            font-size: 2.85rem;
            font-weight: 800;
            line-height: 1.22;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }

        .hero-content h1 span.gradient-text {
            background: linear-gradient(135deg, #A5B4FC, #38BDF8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            color: var(--text-secondary);
            font-size: 1.1rem;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 36px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            box-shadow: 0 4px 16px var(--primary-glow);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(99, 102, 241, 0.35);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-surface);
            color: var(--text-main);
            padding: 13px 26px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid var(--border-dim);
        }

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

        .hero-terminal {
            background: #0D1017;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
        }

        .terminal-header {
            background: #161B26;
            padding: 10px 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-dim);
        }

        .terminal-dots {
            display: flex;
            gap: 6px;
        }

        .terminal-dots span {
            width: 10px;
            height: 10px;
            border-radius: 50%;
        }

        .terminal-dots span:nth-child(1) { background: #EF4444; }
        .terminal-dots span:nth-child(2) { background: #F59E0B; }
        .terminal-dots span:nth-child(3) { background: #10B981; }

        .terminal-title {
            font-size: 0.78rem;
            color: var(--text-muted);
            font-family: monospace;
        }

        .terminal-body {
            padding: 20px;
            font-family: "Fira Code", monospace, Consolas, sans-serif;
            font-size: 0.85rem;
            line-height: 1.65;
            color: #A5B4FC;
            background: #090B10;
        }

        .terminal-body .comment { color: var(--text-muted); }
        .terminal-body .keyword { color: #F472B6; }
        .terminal-body .string { color: #34D399; }
        .terminal-body .num { color: #FBBF24; }

        /* 统一板块间隔与背景 */
        .section-padding {
            padding: 90px 0;
        }

        .bg-surface {
            background-color: var(--bg-surface);
        }

        .bg-elevated {
            background-color: var(--bg-elevated);
        }

        .bg-deep {
            background-color: var(--bg-darker);
        }

        /* 产线能力 / 架构区 */
        .arch-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .arch-spec-item {
            display: flex;
            gap: 16px;
            margin-bottom: 24px;
        }

        .arch-spec-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(99, 102, 241, 0.12);
            border: 1px solid rgba(99, 102, 241, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--primary-light);
        }

        .arch-spec-text h4 {
            font-size: 1.15rem;
            margin-bottom: 6px;
        }

        .arch-spec-text p {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        .img-frame {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            position: relative;
        }

        /* 核心优势 6卡片网格 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            position: relative;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            border-color: rgba(99, 102, 241, 0.4);
            box-shadow: var(--shadow-hover);
            background: var(--bg-elevated);
        }

        .feature-icon-badge {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.15));
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary-light);
        }

        .feature-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            font-weight: 600;
        }

        .feature-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .feature-card .status-tag {
            display: inline-block;
            margin-top: 18px;
            font-size: 0.8rem;
            color: var(--neon-cyan);
            background: rgba(6, 182, 212, 0.1);
            padding: 3px 10px;
            border-radius: 4px;
            border: 1px solid rgba(6, 182, 212, 0.2);
        }

        /* 场景套件矩阵 */
        .suite-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            align-items: stretch;
        }

        .suite-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            display: flex;
            flex-direction: column;
            position: relative;
            transition: all 0.3s ease;
        }

        .suite-card.featured {
            border-color: var(--primary);
            box-shadow: 0 8px 32px rgba(99, 102, 241, 0.25);
            background: linear-gradient(180deg, #1C2032 0%, #141723 100%);
        }

        .suite-card .popular-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(90deg, var(--primary), var(--neon-cyan));
            color: #fff;
            padding: 4px 14px;
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .suite-card h3 {
            font-size: 1.45rem;
            margin-bottom: 12px;
        }

        .suite-card .suite-target {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 24px;
            padding-bottom: 18px;
            border-bottom: 1px solid var(--border-dim);
        }

        .suite-features-list {
            list-style: none;
            margin-bottom: 32px;
            flex-grow: 1;
        }

        .suite-features-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }

        .suite-features-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--signal-green);
            font-weight: bold;
        }

        /* 参数表 (能力对照与工程指标) */
        .specs-table-wrapper {
            background: var(--bg-surface);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-md);
            overflow-x: auto;
        }

        .specs-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 0.95rem;
        }

        .specs-table th, .specs-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-dim);
        }

        .specs-table th {
            background: #10131B;
            color: var(--text-main);
            font-weight: 600;
            white-space: nowrap;
        }

        .specs-table td {
            color: var(--text-secondary);
        }

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

        .specs-table tr:hover td {
            background: rgba(255, 255, 255, 0.02);
            color: var(--text-main);
        }

        .highlight-param {
            color: var(--neon-cyan);
            font-weight: 600;
        }

        /* 演播理念与算法拓扑流程 */
        .topology-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .topology-step {
            background: var(--bg-surface);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            position: relative;
        }

        .topology-step .step-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: rgba(99, 102, 241, 0.25);
            line-height: 1;
            margin-bottom: 12px;
            font-family: monospace;
        }

        .topology-step h4 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .topology-step p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* 成功案例现场 */
        .case-study-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 64px;
        }

        .case-study-row:last-child {
            margin-bottom: 0;
        }

        .case-study-row.reverse {
            direction: rtl;
        }

        .case-study-row.reverse .case-content {
            direction: ltr;
        }

        .case-metrics-badge {
            display: flex;
            gap: 20px;
            margin-top: 24px;
        }

        .metric-badge-box {
            background: var(--bg-surface);
            border: 1px solid var(--border-dim);
            padding: 12px 18px;
            border-radius: var(--radius-sm);
        }

        .metric-badge-box .val {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--signal-green);
        }

        .metric-badge-box .lbl {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 全网运行核心数据指标条 */
        .metrics-strip-section {
            background: #0E121B;
            border-top: 1px solid var(--border-dim);
            border-bottom: 1px solid var(--border-dim);
            padding: 56px 0;
        }

        .metrics-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .metric-item .big-number {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 8px;
            font-family: monospace;
            background: linear-gradient(135deg, #F8FAFC, #94A3B8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .metric-item .label {
            font-size: 0.95rem;
            color: var(--text-secondary);
        }

        /* 客户评价墙 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-md);
            padding: 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .testimonial-rating {
            color: #F59E0B;
            margin-bottom: 14px;
            letter-spacing: 2px;
        }

        .testimonial-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-dim);
            padding-top: 16px;
        }

        .author-avatar-stub {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, #4F46E5, #06B6D4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: #fff;
        }

        .author-info h5 {
            font-size: 0.95rem;
            margin-bottom: 2px;
        }

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

        /* 资费与部署定价区 */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            align-items: stretch;
        }

        .pricing-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            display: flex;
            flex-direction: column;
        }

        .pricing-card.highlight {
            border-color: var(--primary);
            background: linear-gradient(180deg, #1A1E2E 0%, #131622 100%);
            box-shadow: 0 8px 30px rgba(99, 102, 241, 0.2);
        }

        .price-val {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-main);
            margin: 16px 0 6px 0;
            font-family: monospace;
        }

        .price-val span {
            font-size: 1rem;
            color: var(--text-muted);
            font-weight: normal;
        }

        .price-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-dim);
        }

        .price-specs {
            list-style: none;
            margin-bottom: 32px;
            flex-grow: 1;
        }

        .price-specs li {
            padding-left: 20px;
            position: relative;
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        .price-specs li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--primary-light);
            font-size: 1.2rem;
            line-height: 1;
        }

        /* 前沿资讯文章横列 */
        .insights-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .insight-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .insight-card .category {
            font-size: 0.78rem;
            color: var(--neon-cyan);
            margin-bottom: 10px;
            font-weight: 600;
        }

        .insight-card h4 {
            font-size: 1.05rem;
            line-height: 1.45;
            margin-bottom: 12px;
        }

        .insight-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .insight-card .date-tag {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 常见问答手风琴 */
        .faq-wrapper {
            max-width: 840px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-surface);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-question span.faq-icon {
            font-size: 1.2rem;
            color: var(--text-muted);
            transition: transform 0.25s ease;
        }

        .faq-answer {
            padding: 0 24px 20px 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.75;
            display: none;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            margin-top: -4px;
        }

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

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--primary-light);
        }

        /* 合作伙伴背书 */
        .partners-bar {
            padding: 48px 0;
            border-top: 1px solid var(--border-dim);
            border-bottom: 1px solid var(--border-dim);
            background: #090B10;
        }

        .partners-list {
            display: flex;
            justify-content: space-around;
            align-items: center;
            flex-wrap: wrap;
            gap: 24px;
            color: var(--text-muted);
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 1px;
        }

        /* 底部转化表单与技术预约 */
        .contact-cta-section {
            background: linear-gradient(180deg, var(--bg-surface) 0%, #0F121C 100%);
            border-top: 1px solid var(--border-dim);
            padding: 80px 0;
        }

        .contact-box {
            background: #181C29;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 48px;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .form-group input, .form-group select, .form-group textarea {
            width: 100%;
            background: #0D1017;
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            color: var(--text-main);
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.2s;
        }

        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            border-color: var(--primary);
        }

        .form-privacy-note {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 商业页脚 */
        .site-footer {
            background: #06080C;
            border-top: 1px solid var(--border-dim);
            padding: 64px 0 32px 0;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-col h4 {
            color: var(--text-main);
            font-size: 1.05rem;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

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

        .footer-contact-item {
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .footer-bottom {
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        /* 响应式断点适配 */
        @media (max-width: 1024px) {
            .hero-grid, .arch-grid, .contact-box {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .features-grid, .suite-grid, .pricing-grid, .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topology-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .insights-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .signal-bar {
                display: none;
            }
            .nav-links, .nav-cta-btn {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-content h1 {
                font-size: 2.15rem;
            }
            .features-grid, .suite-grid, .pricing-grid, .testimonials-grid, .insights-grid, .topology-flow {
                grid-template-columns: 1fr;
            }
            .metrics-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .case-study-row, .case-study-row.reverse {
                grid-template-columns: 1fr;
                direction: ltr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .contact-box {
                padding: 28px 20px;
            }
            .section-header h2 {
                font-size: 1.85rem;
            }
        }

        /* 移动端全屏折叠抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            width: 100%;
            background: #0D1017;
            border-bottom: 1px solid var(--border-dim);
            padding: 24px;
            z-index: 999;
        }

        .mobile-drawer.open {
            display: block;
        }

        .mobile-drawer ul {
            list-style: none;
        }

        .mobile-drawer ul li {
            margin-bottom: 18px;
        }

        .mobile-drawer ul li a {
            font-size: 1.1rem;
            display: block;
            min-height: 44px;
            display: flex;
            align-items: center;
        }