/* roulang page: index */
:root {
            --lms-primary: #1e3a8a;
            --lms-primary-dark: #172554;
            --lms-primary-light: #3b82f6;
            --lms-accent: #0284c7;
            --lms-accent-soft: #e0f2fe;
            --lms-dark: #0f172a;
            --lms-gray-dark: #334155;
            --lms-gray-light: #64748b;
            --lms-bg-subtle: #f8fafc;
            --lms-bg-card: #ffffff;
            --lms-border: #e2e8f0;
            --lms-border-focus: #93c5fd;
            --lms-radius: 12px;
            --lms-radius-sm: 6px;
            --lms-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --lms-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --lms-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
            --lms-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--lms-gray-dark);
            background-color: #ffffff;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--lms-primary);
            text-decoration: none;
            transition: var(--lms-transition);
        }
        a:hover {
            color: var(--lms-primary-light);
        }

        /* 顶部导航 */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--lms-border);
            position: sticky;
            top: 0;
            z-index: 1030;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.45rem;
            color: var(--lms-dark) !important;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .navbar-brand .brand-badge {
            background: var(--lms-primary);
            color: #fff;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .nav-link {
            font-weight: 500;
            color: var(--lms-gray-dark) !important;
            padding: 0.5rem 1rem !important;
            border-radius: var(--lms-radius-sm);
            transition: var(--lms-transition);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--lms-primary) !important;
            background-color: var(--lms-accent-soft);
        }
        .nav-search-bar {
            max-width: 220px;
        }

        /* 统一 Section */
        .lms-section {
            padding: 4.5rem 0;
            position: relative;
        }
        .lms-section-alt {
            background-color: var(--lms-bg-subtle);
            border-top: 1px solid var(--lms-border);
            border-bottom: 1px solid var(--lms-border);
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--lms-primary);
            background: var(--lms-accent-soft);
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 0.75rem;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--lms-dark);
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .section-lead {
            font-size: 1.05rem;
            color: var(--lms-gray-light);
            max-width: 760px;
            margin: 0 auto 2.5rem;
        }

        /* Hero 变体：线索获客提问式首屏 */
        .hero-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #1e3a8a 100%);
            color: #ffffff;
            padding: 5rem 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            margin-bottom: 1.5rem;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 2.6rem;
            font-weight: 900;
            line-height: 1.25;
            color: #ffffff;
            margin-bottom: 1.25rem;
            letter-spacing: -0.5px;
        }
        .hero-desc {
            font-size: 1.05rem;
            line-height: 1.75;
            color: #cbd5e1;
            margin-bottom: 2rem;
        }
        .hero-form-card {
            background: #ffffff;
            border-radius: var(--lms-radius);
            padding: 2.2rem;
            color: var(--lms-dark);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        /* 统一通用卡片 */
        .lms-card {
            background: var(--lms-bg-card);
            border: 1px solid var(--lms-border);
            border-radius: var(--lms-radius);
            padding: 1.75rem;
            box-shadow: var(--lms-shadow-sm);
            transition: var(--lms-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .lms-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--lms-shadow-lg);
            border-color: var(--lms-border-focus);
        }
        .lms-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--lms-accent-soft);
            color: var(--lms-primary);
            font-size: 1.35rem;
            margin-bottom: 1.25rem;
        }

        /* 统一按钮系统 */
        .btn-lms-primary {
            background-color: var(--lms-primary);
            color: #ffffff;
            font-weight: 600;
            padding: 0.65rem 1.5rem;
            border-radius: var(--lms-radius-sm);
            border: none;
            transition: var(--lms-transition);
        }
        .btn-lms-primary:hover {
            background-color: var(--lms-primary-dark);
            color: #ffffff;
            box-shadow: 0 4px 12px rgba(30, 58, 138, 0.3);
        }
        .btn-lms-outline {
            background: transparent;
            color: var(--lms-primary);
            border: 1px solid var(--lms-primary);
            font-weight: 600;
            padding: 0.65rem 1.5rem;
            border-radius: var(--lms-radius-sm);
            transition: var(--lms-transition);
        }
        .btn-lms-outline:hover {
            background: var(--lms-accent-soft);
            color: var(--lms-primary-dark);
        }

        /* 日历样式 */
        .calendar-item {
            background: #ffffff;
            border-radius: var(--lms-radius);
            border: 1px solid var(--lms-border);
            padding: 1.25rem;
            display: flex;
            align-items: flex-start;
            gap: 1.25rem;
            transition: var(--lms-transition);
        }
        .calendar-item:hover {
            border-color: var(--lms-primary);
            box-shadow: var(--lms-shadow);
        }
        .calendar-date {
            background: var(--lms-primary);
            color: #fff;
            padding: 8px 12px;
            border-radius: 8px;
            text-align: center;
            min-width: 64px;
        }
        .calendar-date .day {
            font-size: 1.4rem;
            font-weight: 800;
            line-height: 1;
        }
        .calendar-date .week {
            font-size: 0.75rem;
            opacity: 0.9;
        }

        /* 专题与媒体卡 */
        .topic-pill {
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 4px;
            background: #f1f5f9;
            color: var(--lms-gray-dark);
        }

        /* 数据指标卡 */
        .stat-box {
            border-right: 1px solid var(--lms-border);
            padding: 1rem 1.5rem;
        }
        .stat-box:last-child {
            border-right: none;
        }
        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--lms-primary);
            line-height: 1;
            margin-bottom: 0.5rem;
        }

        /* 时间线样式 */
        .timeline-step {
            position: relative;
            padding-left: 2rem;
            border-left: 2px dashed var(--lms-border);
            margin-bottom: 2rem;
        }
        .timeline-step::before {
            content: "";
            position: absolute;
            left: -7px;
            top: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--lms-primary);
        }

        /* 页脚 */
        .site-footer {
            background: var(--lms-dark);
            color: #94a3b8;
            padding: 4.5rem 0 2rem;
            border-top: 1px solid #1e293b;
        }
        .footer-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 1rem;
        }
        .footer-title {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a {
            color: #94a3b8;
        }
        .footer-links a:hover {
            color: #ffffff;
        }
        .footer-bottom {
            margin-top: 3.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid #1e293b;
            font-size: 0.85rem;
        }

        @media (max-width: 991px) {
            .hero-title { font-size: 2rem; }
            .section-title { font-size: 1.65rem; }
            .stat-box { border-right: none; border-bottom: 1px solid var(--lms-border); margin-bottom: 1rem; }
        }

/* roulang page: category1 */
:root {
            --lms-primary: #1e3a8a;
            --lms-primary-dark: #172554;
            --lms-primary-light: #3b82f6;
            --lms-accent: #0284c7;
            --lms-accent-soft: #e0f2fe;
            --lms-dark: #0f172a;
            --lms-gray-dark: #334155;
            --lms-gray-light: #64748b;
            --lms-bg-subtle: #f8fafc;
            --lms-bg-card: #ffffff;
            --lms-border: #e2e8f0;
            --lms-border-focus: #93c5fd;
            --lms-radius: 12px;
            --lms-radius-sm: 6px;
            --lms-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --lms-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
            --lms-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
            --lms-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--lms-gray-dark);
            background-color: #ffffff;
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--lms-primary);
            text-decoration: none;
            transition: var(--lms-transition);
        }
        a:hover {
            color: var(--lms-primary-light);
        }
        /* 顶部导航 */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--lms-border);
            position: sticky;
            top: 0;
            z-index: 1030;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.45rem;
            color: var(--lms-dark) !important;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .navbar-brand .brand-badge {
            background: var(--lms-primary);
            color: #fff;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .nav-link {
            font-weight: 500;
            color: var(--lms-gray-dark) !important;
            padding: 0.5rem 1rem !important;
            border-radius: var(--lms-radius-sm);
            transition: var(--lms-transition);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--lms-primary) !important;
            background-color: var(--lms-accent-soft);
        }
        .nav-search-bar {
            max-width: 220px;
        }
        /* 统一 Section */
        .lms-section {
            padding: 4.5rem 0;
            position: relative;
        }
        .lms-section-alt {
            background-color: var(--lms-bg-subtle);
            border-top: 1px solid var(--lms-border);
            border-bottom: 1px solid var(--lms-border);
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--lms-primary);
            background: var(--lms-accent-soft);
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 0.75rem;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--lms-dark);
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .section-lead {
            font-size: 1.05rem;
            color: var(--lms-gray-light);
            max-width: 760px;
            margin: 0 auto 2.5rem;
        }
        /* API 风格分类页 Hero */
        .cat-hero-section {
            background: linear-gradient(135deg, #0b132b 0%, #1c2541 60%, #1e3a8a 100%);
            color: #ffffff;
            padding: 4rem 0 3.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .code-console {
            background: #090d16;
            border-radius: var(--lms-radius);
            border: 1px solid #1e293b;
            box-shadow: var(--lms-shadow-lg);
            overflow: hidden;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        }
        .console-header {
            background: #111827;
            padding: 8px 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid #1f2937;
        }
        .console-dots {
            display: flex;
            gap: 6px;
        }
        .console-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
        }
        .dot-red { background: #ef4444; }
        .dot-yellow { background: #f59e0b; }
        .dot-green { background: #10b981; }
        .console-body {
            padding: 1.25rem;
            font-size: 0.85rem;
            color: #38bdf8;
            line-height: 1.6;
        }
        .console-key { color: #f472b6; }
        .console-val { color: #a5f3fc; }
        .console-num { color: #facc15; }

        /* 统一通用卡片 */
        .lms-card {
            background: var(--lms-bg-card);
            border: 1px solid var(--lms-border);
            border-radius: var(--lms-radius);
            padding: 1.75rem;
            box-shadow: var(--lms-shadow-sm);
            transition: var(--lms-transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .lms-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--lms-shadow-lg);
            border-color: var(--lms-border-focus);
        }
        .lms-card .card-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--lms-accent-soft);
            color: var(--lms-primary);
            font-size: 1.25rem;
            margin-bottom: 1rem;
        }

        /* 统一按钮系统 */
        .btn-lms-primary {
            background-color: var(--lms-primary);
            color: #ffffff;
            font-weight: 600;
            padding: 0.65rem 1.5rem;
            border-radius: var(--lms-radius-sm);
            border: none;
            transition: var(--lms-transition);
        }
        .btn-lms-primary:hover {
            background-color: var(--lms-primary-dark);
            color: #ffffff;
            transform: translateY(-1px);
        }
        .btn-lms-secondary {
            background-color: #ffffff;
            color: var(--lms-primary);
            font-weight: 600;
            padding: 0.65rem 1.5rem;
            border-radius: var(--lms-radius-sm);
            border: 1px solid var(--lms-border);
            transition: var(--lms-transition);
        }
        .btn-lms-secondary:hover {
            background-color: var(--lms-bg-subtle);
            color: var(--lms-primary-dark);
            border-color: var(--lms-primary-light);
        }

        /* 状态与指标卡 */
        .metric-pill {
            font-size: 0.75rem;
            padding: 2px 10px;
            border-radius: 4px;
            font-weight: 600;
            display: inline-block;
        }
        .metric-high { background: #fee2e2; color: #b91c1c; }
        .metric-mid { background: #fef3c7; color: #b45309; }
        .metric-low { background: #dcfce7; color: #15803d; }

        /* 筛选标签 */
        .filter-badge {
            cursor: pointer;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 500;
            border: 1px solid var(--lms-border);
            background: #ffffff;
            color: var(--lms-gray-dark);
            transition: var(--lms-transition);
        }
        .filter-badge.active, .filter-badge:hover {
            background: var(--lms-primary);
            color: #ffffff;
            border-color: var(--lms-primary);
        }

        /* 列表项增强 */
        .case-list-item {
            border-left: 3px solid transparent;
            transition: var(--lms-transition);
        }
        .case-list-item:hover {
            border-left-color: var(--lms-primary);
            background-color: #fcfdfe;
        }

        /* 页脚 */
        .site-footer {
            background-color: var(--lms-dark);
            color: #94a3b8;
            padding: 4rem 0 2rem;
            border-top: 1px solid #1e293b;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-title {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            letter-spacing: 0.5px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.6rem;
        }
        .footer-links a {
            color: #94a3b8;
            font-size: 0.875rem;
        }
        .footer-links a:hover {
            color: #ffffff;
            padding-left: 4px;
        }
        .footer-bottom {
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #1e293b;
            font-size: 0.8rem;
        }