/* roulang page: index */
:root {
            --brand-primary: #1B365D;
            --brand-secondary: #2E6B9E;
            --brand-accent: #C5A059;
            --brand-bg: #F4F7FA;
            --brand-card-bg: #FFFFFF;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
            --radius-sm: 4px;
            --radius-md: 6px;
            --shadow-subtle: 0 4px 20px -2px rgba(27, 54, 93, 0.06);
            --shadow-hover: 0 10px 25px -4px rgba(27, 54, 93, 0.12);
            --transition-smooth: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }

        body {
            font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--brand-bg);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            margin: 0;
            padding: 0;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-heading);
            font-weight: 700;
            letter-spacing: -0.02em;
        }

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

        .btn:focus, .form-control:focus, .form-select:focus {
            box-shadow: 0 0 0 0.25rem rgba(27, 54, 93, 0.15) !important;
            border-color: var(--brand-secondary) !important;
        }

        /* 顶部透明玻璃沉浸导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            transition: var(--transition-smooth);
        }

        .site-header.scrolled {
            background: #FFFFFF;
            box-shadow: 0 2px 15px rgba(15, 23, 42, 0.05);
        }

        .brand-logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .brand-icon-shield {
            width: 38px;
            height: 38px;
            background: var(--brand-primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            font-size: 1.25rem;
            box-shadow: 0 2px 6px rgba(27, 54, 93, 0.2);
        }

        .brand-title-text {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--brand-primary);
            line-height: 1.2;
        }

        .brand-subtitle-tag {
            font-size: 0.7rem;
            color: var(--brand-accent);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            display: block;
            font-weight: 600;
        }

        .nav-link-custom {
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            transition: var(--transition-smooth);
        }

        .nav-link-custom:hover, .nav-link-custom.active {
            color: var(--brand-primary);
            background: rgba(27, 54, 93, 0.05);
        }

        .btn-brand-primary {
            background-color: var(--brand-primary);
            color: #FFFFFF;
            font-weight: 600;
            padding: 0.65rem 1.6rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--brand-primary);
            transition: var(--transition-smooth);
        }

        .btn-brand-primary:hover {
            background-color: #122540;
            color: #FFFFFF;
            box-shadow: 0 4px 12px rgba(27, 54, 93, 0.25);
            transform: translateY(-1px);
        }

        .btn-brand-outline {
            background-color: transparent;
            color: var(--brand-primary);
            font-weight: 600;
            padding: 0.65rem 1.6rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--brand-primary);
            transition: var(--transition-smooth);
        }

        .btn-brand-outline:hover {
            background-color: rgba(27, 54, 93, 0.05);
            color: var(--brand-primary);
        }

        /* 统一卡片与布局间距规范 */
        .section-block {
            padding: 90px 0;
            position: relative;
        }

        .section-block.bg-white-pure {
            background-color: #FFFFFF;
        }

        .section-block.bg-alt {
            background-color: var(--brand-bg);
        }

        .badge-kicker {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--brand-primary);
            background: rgba(27, 54, 93, 0.08);
            padding: 0.35rem 0.85rem;
            border-radius: var(--radius-sm);
            margin-bottom: 1rem;
            border: 1px solid rgba(27, 54, 93, 0.12);
        }

        .section-title {
            font-size: 2.1rem;
            line-height: 1.35;
            margin-bottom: 1rem;
        }

        .section-lead {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 820px;
            margin-bottom: 2.8rem;
        }

        .custom-card {
            background: var(--brand-card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2rem;
            box-shadow: var(--shadow-subtle);
            transition: var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .custom-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: #CBD5E1;
        }

        /* Hero 5:7 错位布局定制 */
        .hero-section {
            padding-top: 150px;
            padding-bottom: 90px;
            background: linear-gradient(180deg, #FFFFFF 0%, #F4F7FA 100%);
            border-bottom: 1px solid var(--border-color);
        }

        .hero-lead-box {
            font-size: 1.08rem;
            color: var(--text-body);
            background: #FFFFFF;
            border-left: 3px solid var(--brand-accent);
            padding: 1.25rem 1.5rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

        .hero-console-panel {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            box-shadow: 0 12px 35px -8px rgba(27, 54, 93, 0.12);
            overflow: hidden;
        }

        .hero-console-header {
            background: var(--brand-primary);
            color: #FFFFFF;
            padding: 1rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .hero-console-body {
            padding: 1.8rem;
        }

        .kpi-indicator-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--brand-primary);
            line-height: 1;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        }

        .kpi-indicator-gold {
            color: var(--brand-accent);
        }

        /* 对比矩阵表格 */
        .matrix-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
        }

        .matrix-table th, .matrix-table td {
            padding: 1.2rem 1.5rem;
            border-bottom: 1px solid var(--border-color);
            vertical-align: middle;
        }

        .matrix-table th {
            background: #F8FAFC;
            font-weight: 700;
            color: var(--brand-primary);
        }

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

        .matrix-highlight {
            background: rgba(27, 54, 93, 0.02);
            font-weight: 600;
            color: var(--brand-primary);
        }

        /* 时间线样式 */
        .timeline-container {
            position: relative;
            padding-left: 2.5rem;
        }

        .timeline-container::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 10px;
            bottom: 10px;
            width: 2px;
            background: var(--border-color);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 2.2rem;
        }

        .timeline-dot {
            position: absolute;
            left: -2.5rem;
            top: 4px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: #FFFFFF;
            border: 4px solid var(--brand-accent);
            box-shadow: 0 0 0 2px rgba(197, 160, 89, 0.2);
        }

        /* 资讯条目横向排版 */
        .news-item-row {
            display: flex;
            gap: 1.5rem;
            padding: 1.4rem;
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 1rem;
            transition: var(--transition-smooth);
        }

        .news-item-row:hover {
            border-color: var(--brand-secondary);
            box-shadow: var(--shadow-subtle);
        }

        .news-date-badge {
            min-width: 95px;
            text-align: center;
            background: #F1F5F9;
            border-radius: var(--radius-sm);
            padding: 0.6rem 0.5rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        /* 互动诊断台样式 */
        .diag-box {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2rem;
        }

        .diag-option-btn {
            border: 1px solid var(--border-color);
            padding: 0.8rem 1.2rem;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            background: #FFFFFF;
            color: var(--text-body);
            width: 100%;
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 0.75rem;
            cursor: pointer;
            transition: var(--transition-smooth);
        }

        .diag-option-btn:hover, .diag-option-btn.active {
            border-color: var(--brand-primary);
            background: rgba(27, 54, 93, 0.04);
            color: var(--brand-primary);
        }

        /* 手风琴精细化覆写 */
        .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 0.75rem;
            overflow: hidden;
        }

        .accordion-button {
            font-weight: 600;
            color: var(--brand-primary);
            background: #FFFFFF;
            padding: 1.2rem 1.5rem;
        }

        .accordion-button:not(.collapsed) {
            color: var(--brand-primary);
            background-color: #F8FAFC;
            box-shadow: none;
        }

        .accordion-body {
            padding: 1.25rem 1.5rem;
            color: var(--text-body);
            font-size: 0.96rem;
            line-height: 1.8;
            background: #FFFFFF;
        }

        /* 全站页脚 */
        .site-footer {
            background: #0B192C;
            color: #94A3B8;
            padding: 80px 0 30px;
            font-size: 0.92rem;
            border-top: 3px solid var(--brand-accent);
        }

        .footer-heading {
            color: #FFFFFF;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1.4rem;
            position: relative;
            padding-bottom: 0.5rem;
        }

        .footer-heading::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--brand-accent);
        }

        .footer-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-link-list li {
            margin-bottom: 0.65rem;
        }

        .footer-link-list a:hover {
            color: #FFFFFF;
            padding-left: 3px;
        }

        .footer-bottom-bar {
            margin-top: 60px;
            padding-top: 25px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: #64748B;
        }

        @media (max-width: 991.98px) {
            .section-block {
                padding: 60px 0;
            }
            .hero-section {
                padding-top: 120px;
                padding-bottom: 60px;
            }
            .matrix-table {
                display: block;
                overflow-x: auto;
            }
        }

/* roulang page: category2 */
:root {
        --brand-primary: #1B365D;
        --brand-secondary: #2E6B9E;
        --brand-accent: #C5A059;
        --brand-bg: #F4F7FA;
        --brand-card-bg: #FFFFFF;
        --text-heading: #0F172A;
        --text-body: #334155;
        --text-muted: #64748B;
        --border-color: #E2E8F0;
        --radius-sm: 4px;
        --radius-md: 6px;
        --shadow-subtle: 0 4px 20px -2px rgba(27, 54, 93, 0.06);
        --shadow-hover: 0 10px 25px -4px rgba(27, 54, 93, 0.12);
        --transition-smooth: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    body {
        font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        background-color: var(--brand-bg);
        color: var(--text-body);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        margin: 0;
        padding: 0;
    }
    a {
        text-decoration: none;
        color: inherit;
        transition: var(--transition-smooth);
    }
    .btn:focus, .form-control:focus, .form-select:focus {
        box-shadow: 0 0 0 0.25rem rgba(27, 54, 93, 0.15) !important;
        border-color: var(--brand-secondary) !important;
    }
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1050;
        background: rgba(255, 255, 255, 0.85);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid rgba(226, 232, 240, 0.8);
        transition: var(--transition-smooth);
    }
    .site-header.scrolled {
        background: #FFFFFF;
        box-shadow: 0 2px 15px rgba(15, 23, 42, 0.05);
    }
    .brand-logo-wrap {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .brand-icon-shield {
        width: 38px;
        height: 38px;
        background: var(--brand-primary);
        color: #FFFFFF;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius-sm);
        font-size: 1.25rem;
        box-shadow: 0 2px 6px rgba(27, 54, 93, 0.2);
    }
    .brand-title-text {
        font-size: 1.15rem;
        font-weight: 800;
        color: var(--brand-primary);
        line-height: 1.2;
    }
    .brand-subtitle-tag {
        font-size: 0.7rem;
        color: var(--brand-accent);
        text-transform: uppercase;
        letter-spacing: 0.05em;
        display: block;
        font-weight: 600;
    }
    .nav-link-custom {
        color: var(--text-body);
        font-weight: 500;
        font-size: 0.95rem;
        padding: 0.5rem 0.9rem;
        border-radius: var(--radius-sm);
        transition: var(--transition-smooth);
    }
    .nav-link-custom:hover, .nav-link-custom.active {
        color: var(--brand-primary);
        background: rgba(27, 54, 93, 0.05);
    }
    .btn-brand-primary {
        background-color: var(--brand-primary);
        color: #FFFFFF;
        font-weight: 600;
        padding: 0.65rem 1.6rem;
        border-radius: var(--radius-sm);
        border: 1px solid var(--brand-primary);
        transition: var(--transition-smooth);
    }
    .btn-brand-primary:hover {
        background-color: #122540;
        color: #FFFFFF;
        box-shadow: 0 4px 12px rgba(27, 54, 93, 0.25);
        transform: translateY(-1px);
    }
    .btn-brand-outline {
        background-color: transparent;
        color: var(--brand-primary);
        font-weight: 600;
        padding: 0.65rem 1.6rem;
        border-radius: var(--radius-sm);
        border: 1px solid var(--brand-primary);
        transition: var(--transition-smooth);
    }
    .btn-brand-outline:hover {
        background-color: rgba(27, 54, 93, 0.05);
        color: var(--brand-primary);
    }
    .section-block {
        padding: 80px 0;
        position: relative;
    }
    .section-block.bg-white-pure {
        background-color: #FFFFFF;
    }
    .section-block.bg-alt {
        background-color: var(--brand-bg);
    }
    .badge-kicker {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 0.8rem;
        font-weight: 700;
        color: var(--brand-primary);
        background: rgba(27, 54, 93, 0.08);
        padding: 0.35rem 0.85rem;
        border-radius: var(--radius-sm);
        margin-bottom: 0.85rem;
        border: 1px solid rgba(27, 54, 93, 0.12);
    }
    .section-title {
        font-size: 2rem;
        font-weight: 700;
        color: var(--text-heading);
        line-height: 1.35;
        margin-bottom: 0.75rem;
    }
    .section-lead {
        font-size: 1.05rem;
        color: var(--text-muted);
        max-width: 820px;
        margin-bottom: 2.5rem;
    }
    .custom-card {
        background: var(--brand-card-bg);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 1.75rem;
        box-shadow: var(--shadow-subtle);
        transition: var(--transition-smooth);
        height: 100%;
        display: flex;
        flex-direction: column;
    }
    .custom-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-hover);
        border-color: #CBD5E1;
    }
    .page-header-spec {
        padding-top: 140px;
        padding-bottom: 60px;
        background: linear-gradient(180deg, #FFFFFF 0%, #F4F7FA 100%);
        border-bottom: 1px solid var(--border-color);
    }
    .spec-h1 {
        font-size: 2.25rem;
        font-weight: 800;
        color: var(--brand-primary);
        line-height: 1.3;
        margin-bottom: 1rem;
    }
    .spec-header-box {
        background: #FFFFFF;
        border: 1px solid var(--border-color);
        border-left: 4px solid var(--brand-accent);
        border-radius: var(--radius-sm);
        padding: 1.25rem 1.5rem;
        box-shadow: var(--shadow-subtle);
    }
    .pill-filter-bar {
        background: #FFFFFF;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 0.75rem 1rem;
        box-shadow: var(--shadow-subtle);
    }
    .filter-pill {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 0.88rem;
        font-weight: 600;
        color: var(--text-body);
        padding: 0.5rem 1.15rem;
        border-radius: 50rem;
        border: 1px solid var(--border-color);
        background: #FFFFFF;
        transition: var(--transition-smooth);
    }
    .filter-pill:hover, .filter-pill.active {
        background: var(--brand-primary);
        color: #FFFFFF;
        border-color: var(--brand-primary);
    }
    .spec-table-wrap {
        background: #FFFFFF;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        overflow: hidden;
        box-shadow: var(--shadow-subtle);
    }
    .spec-table {
        margin-bottom: 0;
        font-size: 0.92rem;
    }
    .spec-table thead {
        background-color: #F8FAFC;
        border-bottom: 2px solid var(--border-color);
    }
    .spec-table thead th {
        font-weight: 700;
        color: var(--brand-primary);
        padding: 1rem 1.25rem;
        border-bottom: none;
    }
    .spec-table tbody td {
        padding: 1.1rem 1.25rem;
        vertical-align: middle;
        border-color: #F1F5F9;
    }
    .status-badge {
        font-size: 0.75rem;
        font-weight: 700;
        padding: 0.25rem 0.65rem;
        border-radius: var(--radius-sm);
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }
    .status-badge.verified {
        background: rgba(16, 185, 129, 0.12);
        color: #065F46;
        border: 1px solid rgba(16, 185, 129, 0.25);
    }
    .status-badge.running {
        background: rgba(46, 107, 158, 0.12);
        color: var(--brand-secondary);
        border: 1px solid rgba(46, 107, 158, 0.25);
    }
    .status-badge.ultra {
        background: rgba(197, 160, 89, 0.15);
        color: #8D6B26;
        border: 1px solid rgba(197, 160, 89, 0.35);
    }
    .status-board-card {
        background: #0F172A;
        color: #E2E8F0;
        border-radius: var(--radius-md);
        padding: 1.75rem;
        font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        box-shadow: var(--shadow-subtle);
    }
    .status-indicator-dot {
        width: 10px;
        height: 10px;
        border-radius: 50%;
        display: inline-block;
    }
    .dot-green {
        background-color: #10B981;
        box-shadow: 0 0 8px #10B981;
    }
    .media-card-thumb {
        position: relative;
        border-radius: var(--radius-sm);
        overflow: hidden;
        background-color: #1E293B;
        aspect-ratio: 16 / 9;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .media-card-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        opacity: 0.9;
        transition: var(--transition-smooth);
    }
    .custom-card:hover .media-card-thumb img {
        transform: scale(1.04);
        opacity: 1;
    }
    .thumb-tag-badge {
        position: absolute;
        top: 8px;
        left: 8px;
        background: rgba(15, 23, 42, 0.82);
        color: #FFFFFF;
        font-size: 0.72rem;
        font-weight: 600;
        padding: 0.2rem 0.55rem;
        border-radius: var(--radius-sm);
        backdrop-filter: blur(4px);
    }
    .thumb-duration-badge {
        position: absolute;
        bottom: 8px;
        right: 8px;
        background: rgba(27, 54, 93, 0.88);
        color: #FFFFFF;
        font-size: 0.72rem;
        font-weight: 600;
        padding: 0.2rem 0.55rem;
        border-radius: var(--radius-sm);
    }
    .step-num-bubble {
        width: 44px;
        height: 44px;
        background: var(--brand-primary);
        color: #FFFFFF;
        font-size: 1.15rem;
        font-weight: 800;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        margin-bottom: 1.25rem;
        box-shadow: 0 4px 10px rgba(27, 54, 93, 0.2);
    }
    .footer-custom {
        background-color: #0F172A;
        color: #94A3B8;
        padding: 80px 0 35px;
        font-size: 0.92rem;
    }
    .footer-heading {
        color: #FFFFFF;
        font-size: 1.05rem;
        font-weight: 700;
        margin-bottom: 1.5rem;
        position: relative;
    }
    .footer-links li {
        margin-bottom: 0.75rem;
    }
    .footer-links a {
        color: #94A3B8;
    }
    .footer-links a:hover {
        color: #FFFFFF;
        padding-left: 4px;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding-top: 2rem;
        margin-top: 3.5rem;
    }
    @media (max-width: 991.98px) {
        .page-header-spec {
            padding-top: 110px;
            padding-bottom: 45px;
        }
        .section-block {
            padding: 60px 0;
        }
        .spec-h1 {
            font-size: 1.8rem;
        }
    }

/* roulang page: category1 */
:root {
        --brand-primary: #1B365D;
        --brand-secondary: #2E6B9E;
        --brand-accent: #C5A059;
        --brand-bg: #F4F7FA;
        --brand-card-bg: #FFFFFF;
        --text-heading: #0F172A;
        --text-body: #334155;
        --text-muted: #64748B;
        --border-color: #E2E8F0;
        --radius-sm: 4px;
        --radius-md: 6px;
        --shadow-subtle: 0 4px 20px -2px rgba(27, 54, 93, 0.06);
        --shadow-hover: 0 10px 25px -4px rgba(27, 54, 93, 0.12);
        --transition-smooth: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    body {
        font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        background-color: var(--brand-bg);
        color: var(--text-body);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        margin: 0;
        padding: 0;
    }
    a {
        text-decoration: none;
        color: inherit;
        transition: var(--transition-smooth);
    }
    .btn:focus, .form-control:focus, .form-select:focus {
        box-shadow: 0 0 0 0.25rem rgba(27, 54, 93, 0.15) !important;
        border-color: var(--brand-secondary) !important;
    }
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1050;
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        border-bottom: 1px solid rgba(226, 232, 240, 0.9);
        transition: var(--transition-smooth);
    }
    .brand-logo-wrap {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .brand-icon-shield {
        width: 38px;
        height: 38px;
        background: var(--brand-primary);
        color: #FFFFFF;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius-sm);
        font-size: 1.25rem;
        box-shadow: 0 2px 6px rgba(27, 54, 93, 0.2);
    }
    .brand-title-text {
        font-size: 1.15rem;
        font-weight: 800;
        color: var(--brand-primary);
        line-height: 1.2;
    }
    .brand-subtitle-tag {
        font-size: 0.7rem;
        color: var(--brand-accent);
        text-transform: uppercase;
        letter-spacing: 0.05em;
        display: block;
        font-weight: 600;
    }
    .nav-link-custom {
        color: var(--text-body);
        font-weight: 500;
        font-size: 0.95rem;
        padding: 0.5rem 0.9rem;
        border-radius: var(--radius-sm);
        transition: var(--transition-smooth);
    }
    .nav-link-custom:hover, .nav-link-custom.active {
        color: var(--brand-primary);
        background: rgba(27, 54, 93, 0.05);
    }
    .btn-brand-primary {
        background-color: var(--brand-primary);
        color: #FFFFFF;
        font-weight: 600;
        padding: 0.65rem 1.6rem;
        border-radius: var(--radius-sm);
        border: 1px solid var(--brand-primary);
        transition: var(--transition-smooth);
    }
    .btn-brand-primary:hover {
        background-color: #122540;
        color: #FFFFFF;
        box-shadow: 0 4px 12px rgba(27, 54, 93, 0.25);
        transform: translateY(-1px);
    }
    .btn-brand-outline {
        background-color: transparent;
        color: var(--brand-primary);
        font-weight: 600;
        padding: 0.65rem 1.6rem;
        border-radius: var(--radius-sm);
        border: 1px solid var(--brand-primary);
        transition: var(--transition-smooth);
    }
    .btn-brand-outline:hover {
        background-color: rgba(27, 54, 93, 0.05);
        color: var(--brand-primary);
    }
    .section-block {
        padding: 75px 0;
        position: relative;
    }
    .section-block.bg-white-pure {
        background-color: #FFFFFF;
    }
    .badge-kicker {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 0.8rem;
        font-weight: 700;
        color: var(--brand-primary);
        background: rgba(27, 54, 93, 0.08);
        padding: 0.35rem 0.85rem;
        border-radius: var(--radius-sm);
        margin-bottom: 1rem;
        border: 1px solid rgba(27, 54, 93, 0.12);
    }
    .section-title {
        font-size: 1.85rem;
        font-weight: 800;
        color: var(--text-heading);
        line-height: 1.35;
        margin-bottom: 0.75rem;
    }
    .custom-card {
        background: var(--brand-card-bg);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 1.5rem;
        box-shadow: var(--shadow-subtle);
        transition: var(--transition-smooth);
        height: 100%;
        display: flex;
        flex-direction: column;
    }
    .custom-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-hover);
        border-color: #CBD5E1;
    }
    /* 分类专属首屏排版 */
    .cat-hero-header {
        padding-top: 130px;
        padding-bottom: 40px;
        background: linear-gradient(180deg, #FFFFFF 0%, #F4F7FA 100%);
        border-bottom: 1px solid var(--border-color);
    }
    .cat-stat-badge {
        background: #FFFFFF;
        border: 1px solid var(--border-color);
        padding: 0.5rem 1rem;
        border-radius: var(--radius-sm);
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--brand-primary);
    }
    /* 筛选条 */
    .filter-panel {
        background: #FFFFFF;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 1.5rem 2rem;
        margin-top: -25px;
        box-shadow: var(--shadow-subtle);
        position: relative;
        z-index: 20;
    }
    .filter-group-label {
        font-size: 0.85rem;
        font-weight: 700;
        color: var(--text-heading);
        min-width: 80px;
    }
    .filter-pill {
        font-size: 0.82rem;
        padding: 0.25rem 0.85rem;
        border-radius: var(--radius-sm);
        background: #F8FAFC;
        border: 1px solid var(--border-color);
        color: var(--text-body);
        cursor: pointer;
        transition: var(--transition-smooth);
    }
    .filter-pill:hover, .filter-pill.active {
        background: var(--brand-primary);
        color: #FFFFFF;
        border-color: var(--brand-primary);
    }
    /* 核心网格卡片 */
    .media-card {
        background: #FFFFFF;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        overflow: hidden;
        transition: var(--transition-smooth);
        height: 100%;
        display: flex;
        flex-direction: column;
    }
    .media-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
        border-color: var(--brand-secondary);
    }
    .media-thumb-box {
        position: relative;
        height: 180px;
        background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        color: rgba(255, 255, 255, 0.4);
    }
    .media-thumb-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(15, 23, 42, 0.85) 0%, transparent 60%);
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        padding: 12px;
    }
    .stamp-pill {
        font-size: 0.72rem;
        padding: 2px 8px;
        border-radius: var(--radius-sm);
        font-weight: 700;
        letter-spacing: 0.02em;
    }
    .stamp-accent {
        background: var(--brand-accent);
        color: #0F172A;
    }
    .stamp-dark {
        background: rgba(15, 23, 42, 0.75);
        color: #FFFFFF;
        backdrop-filter: blur(4px);
    }
    .media-card-body {
        padding: 1.25rem;
        display: flex;
        flex-direction: column;
        flex-grow: 1;
    }
    .media-card-title {
        font-size: 0.98rem;
        font-weight: 700;
        color: var(--text-heading);
        line-height: 1.45;
        margin-bottom: 0.5rem;
    }
    .media-card-title:hover {
        color: var(--brand-primary);
    }
    .media-meta-bar {
        font-size: 0.78rem;
        color: var(--text-muted);
        border-top: 1px dashed var(--border-color);
        padding-top: 0.75rem;
        margin-top: auto;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    /* 规范说明卡片与合规条 */
    .spec-doc-card {
        border-left: 4px solid var(--brand-primary);
        background: #FFFFFF;
        padding: 1.75rem;
        border-radius: 0 var(--radius-md) var(--radius-md) 0;
        border-top: 1px solid var(--border-color);
        border-right: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
    }
    .compliance-alert-bar {
        background: linear-gradient(90deg, #1B365D 0%, #2E6B9E 100%);
        color: #FFFFFF;
        padding: 1.75rem 2rem;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-subtle);
    }
    /* FAQ 手风琴定制 */
    .faq-item-clean {
        background: #FFFFFF;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-sm);
        margin-bottom: 0.75rem;
        overflow: hidden;
    }
    .faq-trigger {
        width: 100%;
        text-align: left;
        background: transparent;
        border: none;
        padding: 1.1rem 1.5rem;
        font-size: 1rem;
        font-weight: 700;
        color: var(--text-heading);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .faq-trigger:hover {
        color: var(--brand-primary);
    }
    .faq-body-text {
        padding: 0 1.5rem 1.25rem 1.5rem;
        color: var(--text-body);
        font-size: 0.92rem;
        line-height: 1.7;
    }
    /* 结构化页脚样式 */
    .footer-custom {
        background: #0B1727;
        color: #E2E8F0;
        padding-top: 75px;
        padding-bottom: 30px;
        border-top: 3px solid var(--brand-accent);
    }
    .footer-logo {
        font-size: 1.35rem;
        font-weight: 800;
        color: #FFFFFF;
    }
    .footer-heading {
        font-size: 0.95rem;
        font-weight: 700;
        color: #FFFFFF;
        margin-bottom: 1.25rem;
        letter-spacing: 0.03em;
        text-transform: uppercase;
    }
    .footer-links li {
        margin-bottom: 0.65rem;
    }
    .footer-links a {
        color: #94A3B8;
        font-size: 0.88rem;
    }
    .footer-links a:hover {
        color: #FFFFFF;
        padding-left: 3px;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding-top: 25px;
        margin-top: 45px;
        font-size: 0.82rem;
        color: #64748B;
    }
    @media (max-width: 991.98px) {
        .cat-hero-header {
            padding-top: 110px;
        }
        .filter-panel {
            margin-top: 15px;
            padding: 1.25rem;
        }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}