/* roulang page: index */
:root {
            --primary: #0a4da2;
            --primary-dark: #073777;
            --primary-light: #eef5fc;
            --accent: #ff6a00;
            --accent-hover: #e55e00;
            --accent-soft: #fff3eb;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --card-bg: #ffffff;
            --bg-subtle: #f8fafc;
            --bg-gradient: linear-gradient(135deg, #073777 0%, #0a4da2 50%, #1765c9 100%);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 4px rgba(10, 77, 162, 0.04);
            --shadow-md: 0 8px 24px -4px rgba(10, 77, 162, 0.08), 0 4px 8px -2px rgba(10, 77, 162, 0.04);
            --shadow-lg: 0 16px 36px -6px rgba(10, 77, 162, 0.12), 0 8px 16px -4px rgba(10, 77, 162, 0.06);
            --transition: all 0.28s ease;
        }

        /* 基础与重置 */
        * { box-sizing: border-box; }
        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: #ffffff;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        h1, h2, h3, h4, h5, h6 {
            color: var(--text-main);
            font-weight: 700;
            line-height: 1.35;
            margin-top: 0;
        }

        /* 通用容器与板块样式 */
        .page-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .section-block {
            padding: 85px 0;
            position: relative;
        }
        .section-block.bg-alt {
            background-color: var(--bg-subtle);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .section-header {
            text-align: center;
            max-width: 780px;
            margin: 0 auto 52px auto;
        }
        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 30px;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .section-title {
            font-size: 28px;
            margin-bottom: 14px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* 渐变通栏导航 */
        .site-header {
            background: var(--bg-gradient);
            box-shadow: 0 4px 18px rgba(7, 55, 119, 0.2);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.5px;
        }
        .site-logo i {
            color: #58a6ff;
            font-size: 26px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 8px;
        }
        .nav-menu li a {
            color: rgba(255, 255, 255, 0.9);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-menu li a:hover,
        .nav-menu li a.active {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.16);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .nav-btn-hot {
            background-color: var(--accent);
            color: #ffffff !important;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 12px rgba(255, 106, 0, 0.35);
            transition: var(--transition);
        }
        .nav-btn-hot:hover {
            background-color: var(--accent-hover);
            transform: translateY(-1px);
        }

        /* 统一卡片与按钮基础 */
        .card-box {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
        }
        .card-box:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: #cbd5e1;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #ffffff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #ffffff;
            box-shadow: var(--shadow-md);
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent);
            color: #ffffff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            color: #ffffff;
            box-shadow: 0 6px 16px rgba(255, 106, 0, 0.4);
            transform: translateY(-2px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--primary);
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        /* 板块 1: Hero 促销主视觉区 */
        .hero-banner {
            background: linear-gradient(180deg, #f0f7ff 0%, #ffffff 100%);
            padding: 70px 0 60px 0;
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .hero-banner::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 40%;
            height: 100%;
            background: radial-gradient(circle, rgba(10, 77, 162, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-badge-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
        }
        .blast-tag {
            background: var(--accent);
            color: #ffffff;
            font-size: 13px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 4px;
            text-transform: uppercase;
            box-shadow: 0 2px 6px rgba(255, 106, 0, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .promo-text {
            color: #b91c1c;
            font-size: 14px;
            font-weight: 600;
            background: #fef2f2;
            padding: 4px 12px;
            border-radius: 4px;
            border: 1px solid #fee2e2;
        }
        .hero-h1 {
            font-size: 38px;
            font-weight: 800;
            color: #0f172a;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-lead {
            font-size: 16px;
            color: #475569;
            line-height: 1.8;
            margin-bottom: 30px;
            max-width: 920px;
        }
        .hero-action-group {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 35px;
            flex-wrap: wrap;
        }
        .hero-features-strip {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            padding-top: 24px;
            border-top: 1px solid #e2e8f0;
            max-width: 900px;
        }
        .strip-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .strip-icon {
            width: 42px;
            height: 42px;
            border-radius: 8px;
            background: #e0edff;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .strip-title {
            font-size: 14px;
            font-weight: 700;
            color: #1e293b;
            margin-bottom: 2px;
        }
        .strip-desc {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
        }

        /* 板块 2: 痛点与突破对比 */
        .compare-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .compare-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }
        .compare-header {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid #f1f5f9;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .compare-item-bad {
            background: #fff5f5;
            border-left: 3px solid #ef4444;
            padding: 10px 14px;
            border-radius: 0 4px 4px 0;
            margin-bottom: 12px;
            font-size: 13px;
            color: #7f1d1d;
        }
        .compare-item-good {
            background: #f0fdf4;
            border-left: 3px solid #22c55e;
            padding: 10px 14px;
            border-radius: 0 4px 4px 0;
            font-size: 13px;
            color: #14532d;
            font-weight: 500;
        }

        /* 板块 3: 入口矩阵 */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .matrix-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: left;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .matrix-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .matrix-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .matrix-badge {
            position: absolute;
            top: 14px;
            right: 14px;
            font-size: 11px;
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .matrix-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .matrix-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 14px;
            line-height: 1.6;
        }
        .matrix-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 板块 4: 最新动态快报 */
        .news-ticker-wrap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-box {
            background: #ffffff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            padding: 22px;
            box-shadow: var(--shadow-sm);
        }
        .news-date {
            font-size: 12px;
            color: #94a3b8;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .news-heading {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #0f172a;
        }
        .news-summary {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* 板块 5: 核心步骤与实施流程 */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .step-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 26px 20px;
            position: relative;
        }
        .step-num {
            font-size: 26px;
            font-weight: 900;
            color: #cbd5e1;
            margin-bottom: 12px;
        }
        .step-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary-dark);
        }
        .step-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* 板块 6: 精选装备分类矩阵 */
        .equip-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .equip-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 22px;
            border-top: 4px solid var(--primary);
        }
        .equip-name {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .equip-tag {
            font-size: 11px;
            color: #0284c7;
            background: #e0f2fe;
            padding: 2px 6px;
            border-radius: 3px;
            display: inline-block;
            margin-bottom: 10px;
            font-weight: 600;
        }
        .equip-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* 板块 7: 成果数据指标条 */
        .metric-strip-block {
            background: var(--bg-gradient);
            color: #ffffff;
            padding: 60px 0;
        }
        .metric-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .metric-number {
            font-size: 44px;
            font-weight: 900;
            color: #ffffff;
            letter-spacing: -1px;
            line-height: 1;
            margin-bottom: 8px;
        }
        .metric-number span {
            font-size: 22px;
            color: #93c5fd;
        }
        .metric-label {
            font-size: 15px;
            font-weight: 600;
            color: #e2e8f0;
            margin-bottom: 6px;
        }
        .metric-sub {
            font-size: 12px;
            color: #94a3b8;
            margin: 0;
            line-height: 1.5;
        }

        /* 板块 8: 客户案例与真实落地证明 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .case-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 26px;
            box-shadow: var(--shadow-sm);
        }
        .case-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: #0f172a;
        }
        .case-badge {
            font-size: 12px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 2px 8px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 14px;
            font-weight: 600;
        }
        .case-result-box {
            background: #f8fafc;
            border: 1px dashed #cbd5e1;
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            margin: 14px 0;
        }
        .case-result-item {
            font-size: 13px;
            font-weight: 600;
            color: #0369a1;
            margin-bottom: 4px;
        }
        .case-quote {
            font-size: 13px;
            color: #475569;
            line-height: 1.6;
            margin: 0;
        }

        /* 板块 9: 适用场景与关键角色矩阵 */
        .role-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .role-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 22px;
            text-align: center;
        }
        .role-icon-box {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin: 0 auto 14px auto;
        }
        .role-name {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .role-duty {
            font-size: 12px;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 10px;
        }
        .role-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* 板块 10: 资讯与技术前沿专栏 */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .article-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .article-tag {
            font-size: 12px;
            font-weight: 700;
            color: #475569;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .article-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #0f172a;
        }
        .article-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .article-meta {
            font-size: 12px;
            color: #94a3b8;
            border-top: 1px solid #f1f5f9;
            padding-top: 10px;
            display: flex;
            justify-content: space-between;
        }

        /* 板块 11: 版本更新日志 (Changelog) */
        .changelog-box {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            max-width: 860px;
            margin: 0 auto;
        }
        .log-item {
            display: flex;
            gap: 20px;
            padding-bottom: 24px;
            margin-bottom: 24px;
            border-bottom: 1px solid #f1f5f9;
        }
        .log-item:last-child {
            padding-bottom: 0;
            margin-bottom: 0;
            border-bottom: none;
        }
        .log-ver {
            font-size: 14px;
            font-weight: 700;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            height: fit-content;
            white-space: nowrap;
        }
        .log-content h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .log-content p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* 板块 12: 多端互联与全场景协同 */
        .terminal-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .terminal-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
        }
        .terminal-icon {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .terminal-name {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .terminal-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* 板块 13: 快速解答与常见问题 */
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            max-width: 1040px;
            margin: 0 auto;
        }
        .faq-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
        }
        .faq-q {
            font-size: 16px;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 10px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .faq-q i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 14px;
        }
        .faq-a {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            padding-left: 24px;
        }

        /* 板块 14: 底部收口行动区 */
        .cta-bottom-block {
            background: linear-gradient(135deg, #073777 0%, #0a4da2 100%);
            color: #ffffff;
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
        }
        .cta-text-side {
            max-width: 650px;
        }
        .cta-text-side h2 {
            color: #ffffff;
            font-size: 26px;
            margin-bottom: 10px;
        }
        .cta-text-side p {
            color: #cbd5e1;
            font-size: 14px;
            margin: 0;
            line-height: 1.7;
        }
        .cta-form-side {
            display: flex;
            gap: 10px;
            min-width: 380px;
        }
        .cta-input {
            background: #ffffff;
            border: 1px solid #cbd5e1;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: #1e293b;
            flex: 1;
            margin: 0;
        }
        .cta-input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(255, 106, 0, 0.2);
        }

        /* 统一页脚 */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 13px;
            border-top: 1px solid #1e293b;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand-title {
            color: #ffffff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-desc {
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h5 {
            color: #ffffff;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links li a {
            color: #94a3b8;
        }
        .footer-links li a:hover {
            color: #ffffff;
        }
        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid #1e293b;
            text-align: center;
            font-size: 12px;
            color: #64748b;
        }

        /* 响应式断点处理 */
        @media screen and (max-width: 1024px) {
            .matrix-grid, .equip-grid, .terminal-grid, .steps-container {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-h1 { font-size: 32px; }
            .cta-bottom-block { flex-direction: column; text-align: center; }
            .cta-form-side { width: 100%; min-width: auto; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media screen and (max-width: 768px) {
            .section-block { padding: 55px 0; }
            .hero-features-strip { grid-template-columns: 1fr; }
            .compare-grid, .news-ticker-wrap, .case-grid, .article-grid, .faq-grid {
                grid-template-columns: 1fr;
            }
            .metric-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .role-grid { grid-template-columns: repeat(2, 1fr); }
            .cta-form-side { flex-direction: column; }
            .site-logo { font-size: 20px; }
        }
        @media screen and (max-width: 520px) {
            .matrix-grid, .equip-grid, .terminal-grid, .steps-container, .role-grid, .metric-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid { grid-template-columns: 1fr; }
            .hero-h1 { font-size: 26px; }
            .hero-action-group { flex-direction: column; width: 100%; }
            .hero-action-group a { width: 100%; text-align: center; }
        }