/* roulang page: index */
:root {
            --primary: #0A4D4A;
            --primary-dark: #062624;
            --primary-light: #126360;
            --accent: #00E599;
            --accent-hover: #00c882;
            --titanium: #64748B;
            --bg-page: #F4F7F6;
            --bg-card: #FFFFFF;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
            --border-light: #F1F5F9;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
        }

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

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

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

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

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

        button, input {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 顶部通栏公告条 */
        .topbar {
            background-color: var(--primary-dark);
            color: #94A3B8;
            font-size: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 7px 0;
        }
        .topbar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .topbar-left, .topbar-right {
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .topbar-badge {
            background: rgba(0, 229, 153, 0.15);
            color: var(--accent);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 500;
        }

        /* 主导航条 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.01em;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 900;
            font-size: 18px;
            border: 1px solid rgba(0, 229, 153, 0.3);
        }
        .brand-tag {
            font-size: 11px;
            background: #E2E8F0;
            color: var(--text-muted);
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
            margin-left: 4px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 28px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-heading);
            position: relative;
            padding: 6px 0;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            border: 1px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
            box-shadow: 0 2px 4px rgba(10, 77, 74, 0.2);
        }
        .btn-primary:hover {
            background-color: var(--primary-light);
            box-shadow: 0 4px 8px rgba(10, 77, 74, 0.3);
        }
        .btn-accent {
            background-color: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
        }
        .btn-accent:hover {
            background-color: var(--accent-hover);
        }
        .btn-outline {
            border-color: var(--border-color);
            background: transparent;
            color: var(--text-heading);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(10, 77, 74, 0.04);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }
        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-heading);
            margin: 5px 0;
            transition: var(--transition);
        }

        /* 基础 Section 规范 */
        .section {
            padding: 88px 0;
            position: relative;
        }
        .section-alt {
            background-color: #FFFFFF;
        }
        .section-dark {
            background-color: var(--primary-dark);
            color: #E2E8F0;
        }
        .section-heading-wrap {
            max-width: 780px;
            margin-bottom: 48px;
        }
        .section-heading-wrap.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-subhead {
            display: inline-block;
            font-size: 13px;
            text-transform: uppercase;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .section-dark .section-subhead {
            color: var(--accent);
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-heading);
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }
        .section-dark .section-title {
            color: #FFFFFF;
        }
        .section-lead {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        .section-dark .section-lead {
            color: #94A3B8;
        }

        /* 板块 1: 首屏白皮书获客区 (#hero) */
        .hero-section {
            background-color: var(--primary-dark);
            background-image: linear-gradient(135deg, rgba(6, 38, 36, 0.94) 0%, rgba(10, 77, 74, 0.88) 100%), url('/assets/images/813ab78d7b3f1efd.jpg');
            background-size: cover;
            background-position: center;
            color: #FFFFFF;
            padding: 80px 0 90px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge-strip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(0, 229, 153, 0.3);
            border-radius: 30px;
            padding: 6px 16px;
            font-size: 13px;
            color: var(--accent);
            margin-bottom: 24px;
        }
        .hero-title {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            color: #FFFFFF;
        }
        .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: #CBD5E1;
            margin-bottom: 32px;
            max-width: 620px;
        }
        .hero-doc-highlight {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-bottom: 32px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 16px;
            border-radius: var(--radius-md);
        }
        .doc-item-label {
            font-size: 12px;
            color: #94A3B8;
            display: block;
            margin-bottom: 4px;
        }
        .doc-item-val {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
        }
        .hero-card-box {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: 0 20px 35px -5px rgba(0, 0, 0, 0.3);
            color: var(--text-body);
            position: relative;
        }
        .hero-card-tag {
            position: absolute;
            top: -12px;
            right: 28px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            box-shadow: 0 4px 10px rgba(0, 229, 153, 0.3);
        }
        .doc-cover-preview {
            display: flex;
            gap: 18px;
            margin-bottom: 24px;
            align-items: center;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 20px;
        }
        .doc-thumb {
            width: 88px;
            height: 110px;
            object-fit: cover;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .doc-meta-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.4;
            margin-bottom: 6px;
        }
        .doc-meta-sub {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .form-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }
        .form-group {
            margin-bottom: 14px;
        }
        .form-input {
            width: 100%;
            height: 44px;
            padding: 0 14px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-heading);
            background: #F8FAFC;
            transition: var(--transition);
        }
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            background: #FFFFFF;
            box-shadow: 0 0 0 3px rgba(10, 77, 74, 0.1);
        }
        .form-privacy {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 10px;
            line-height: 1.5;
        }

        /* 板块 2: 核心服务与技术底座矩阵 (#matrix) */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(10, 77, 74, 0.3);
        }
        .card-icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: 10px;
            background: rgba(10, 77, 74, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .feature-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }
        .feature-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .feature-spec-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            background: var(--bg-page);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            border: 1px solid var(--border-color);
        }

        /* 板块 3: 左资讯流 + 右热榜入口 (#split-stream) */
        .stream-layout {
            display: grid;
            grid-template-columns: 1.8fr 1.2fr;
            gap: 36px;
        }
        .stream-article-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 20px;
            display: flex;
            gap: 20px;
            transition: var(--transition);
        }
        .stream-article-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }
        .article-thumb {
            width: 140px;
            height: 100px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .article-content {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .article-meta-row {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-bottom: 6px;
        }
        .article-category {
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
            background: rgba(10, 77, 74, 0.08);
            padding: 2px 8px;
            border-radius: 4px;
        }
        .article-date {
            font-size: 12px;
            color: var(--text-muted);
        }
        .article-heading {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.45;
            margin-bottom: 8px;
        }
        .article-summary {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .hot-box {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
        }
        .hot-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 16px;
            margin-bottom: 20px;
        }
        .hot-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
        }
        .hot-list {
            list-style: none;
        }
        .hot-item {
            display: flex;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px dashed var(--border-color);
            align-items: flex-start;
        }
        .hot-item:last-child {
            border-bottom: none;
        }
        .hot-num {
            font-size: 14px;
            font-weight: 800;
            color: var(--text-muted);
            width: 22px;
            height: 22px;
            background: var(--bg-page);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .hot-num.top-3 {
            background: var(--primary);
            color: #FFFFFF;
        }
        .hot-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-body);
            line-height: 1.5;
        }
        .hot-link:hover {
            color: var(--primary);
        }

        /* 板块 4: 核心专题条 (#topic-strip) */
        .topic-strip-section {
            background: linear-gradient(90deg, #062624 0%, #0A4D4A 100%);
            color: #FFFFFF;
            padding: 50px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .topic-unit {
            display: flex;
            gap: 18px;
            align-items: center;
            padding: 16px 20px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .topic-icon {
            font-size: 28px;
            color: var(--accent);
            flex-shrink: 0;
        }
        .topic-unit-title {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 4px;
        }
        .topic-unit-desc {
            font-size: 13px;
            color: #CBD5E1;
            line-height: 1.5;
        }

        /* 板块 5: 业务场景与解决方案落地 (#scenarios) */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .solution-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }
        .solution-img {
            height: 180px;
            width: 100%;
            object-fit: cover;
        }
        .solution-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .solution-tag {
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .solution-name {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }
        .solution-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .solution-features-list {
            list-style: none;
            margin-bottom: 24px;
        }
        .solution-features-list li {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .solution-features-list li::before {
            content: "✓";
            color: var(--accent-hover);
            font-weight: 800;
        }

        /* 板块 6: 平台效能数据统计条 (#metrics) */
        .metrics-section {
            background-color: var(--primary-dark);
            color: #FFFFFF;
            padding: 60px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .metric-box {
            padding: 10px 16px;
            border-right: 1px solid rgba(255, 255, 255, 0.1);
        }
        .metric-box:last-child {
            border-right: none;
        }
        .metric-number {
            font-size: 44px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: 8px;
            font-feature-settings: "tnum";
        }
        .metric-label {
            font-size: 15px;
            font-weight: 600;
            color: #F1F5F9;
            margin-bottom: 4px;
        }
        .metric-sub {
            font-size: 12px;
            color: #94A3B8;
        }

        /* 板块 7: 安全体系与合规审计摘要 (#security-audit) */
        .audit-box {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 36px;
        }
        .audit-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .audit-item {
            border-left: 3px solid var(--primary);
            padding-left: 18px;
        }
        .audit-item-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .audit-item-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 板块 8: 标杆案例故事深读 (#case-study) */
        .case-card-deep {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            box-shadow: var(--shadow-md);
        }
        .case-deep-content {
            padding: 44px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .case-flag {
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            background: rgba(10, 77, 74, 0.08);
            display: inline-block;
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 14px;
            align-self: flex-start;
        }
        .case-deep-title {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-heading);
            margin-bottom: 16px;
            line-height: 1.35;
        }
        .case-deep-text {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .case-deep-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            background: var(--bg-page);
            padding: 16px;
            border-radius: var(--radius-sm);
        }
        .stat-val {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
        }
        .stat-key {
            font-size: 12px;
            color: var(--text-muted);
        }
        .case-deep-media {
            position: relative;
            background: #062624;
        }
        .case-deep-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* 板块 9: 开放集成与系统互联生态 (#integration) */
        .integration-strip {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .integration-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 20px 14px;
            border-radius: var(--radius-sm);
            text-align: center;
            transition: var(--transition);
        }
        .integration-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .integration-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 4px;
        }
        .integration-type {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 板块 10: 最新动态与行业技术资讯 (#latest-updates) */
        .updates-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .update-box {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
        }
        .update-box:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }
        .update-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .update-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .update-desc {
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* 板块 11: 媒体合作与生态机构背书 (#media-partners) */
        .partners-logo-wall {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .partner-logo-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 16px;
            border-radius: var(--radius-sm);
            text-align: center;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .partner-logo-item:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: #FAFDFB;
        }

        /* 板块 12: 技术服务承诺与更新订阅条 (#subscription-sla) */
        .sla-banner {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            border-radius: var(--radius-lg);
            padding: 48px;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }
        .sla-info-title {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 10px;
        }
        .sla-info-desc {
            font-size: 14px;
            color: #CBD5E1;
            max-width: 580px;
            line-height: 1.7;
        }
        .sla-form-wrap {
            display: flex;
            gap: 10px;
            min-width: 380px;
        }
        .sla-input {
            flex-grow: 1;
            height: 48px;
            padding: 0 16px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            font-size: 14px;
        }
        .sla-input::placeholder {
            color: #94A3B8;
        }
        .sla-input:focus {
            outline: none;
            background: rgba(255, 255, 255, 0.18);
            border-color: var(--accent);
        }

        /* 页脚区域 */
        .site-footer {
            background: #041B19;
            color: #94A3B8;
            font-size: 14px;
            padding: 64px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand-title {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .footer-text {
            font-size: 13px;
            line-height: 1.8;
            color: #94A3B8;
            margin-bottom: 16px;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact-item {
            font-size: 13px;
            margin-bottom: 8px;
            color: #CBD5E1;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            font-size: 12px;
            text-align: center;
            color: #64748B;
            line-height: 1.8;
        }

        /* 响应式样式适配 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
            }
            .matrix-grid, .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stream-layout {
                grid-template-columns: 1fr;
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .audit-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-card-deep {
                grid-template-columns: 1fr;
            }
            .case-deep-media {
                height: 260px;
            }
            .integration-strip {
                grid-template-columns: repeat(3, 1fr);
            }
            .partners-logo-wall {
                grid-template-columns: repeat(3, 1fr);
            }
            .sla-banner {
                flex-direction: column;
                align-items: flex-start;
            }
            .sla-form-wrap {
                width: 100%;
                min-width: unset;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .topbar {
                display: none;
            }
            .site-header {
                position: relative;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-menu {
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: #FFFFFF;
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                box-shadow: var(--shadow-lg);
                display: none;
                gap: 16px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-menu.show {
                display: flex;
            }
            .nav-actions {
                display: none;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-doc-highlight {
                grid-template-columns: 1fr;
            }
            .matrix-grid, .solutions-grid, .updates-grid {
                grid-template-columns: 1fr;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .audit-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .metric-box {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                padding-bottom: 16px;
            }
            .integration-strip, .partners-logo-wall {
                grid-template-columns: repeat(2, 1fr);
            }
            .stream-article-item {
                flex-direction: column;
            }
            .article-thumb {
                width: 100%;
                height: 160px;
            }
            .case-deep-content {
                padding: 24px;
            }
            .case-deep-stats {
                grid-template-columns: 1fr;
            }
            .sla-banner {
                padding: 24px;
            }
            .sla-form-wrap {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }