/* roulang page: index */
:root {
            --brand-primary: #FF4D79;
            --brand-primary-hover: #E83B65;
            --brand-primary-subtle: #FFF0F4;
            --brand-secondary: #4A3E72;
            --brand-accent: #FFA63D;
            --bg-base: #F8F9FC;
            --bg-surface: #FFFFFF;
            --bg-dark-dashboard: #1E1B2E;
            --border-subtle: #EAEBF0;
            --border-light: #F0F1F6;
            --text-main: #1A1A24;
            --text-muted: #64687A;
            --text-light: #F4F5F9;
            --shadow-sm: 0 4px 16px -2px rgba(74, 62, 114, 0.05);
            --shadow-md: 0 10px 28px -4px rgba(74, 62, 114, 0.08);
            --shadow-hover: 0 16px 36px -6px rgba(255, 77, 121, 0.18);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-pill: 50rem;
            --transition-smooth: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* Base Resets */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.68;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-smooth);
        }
        a:hover {
            color: var(--brand-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            vertical-align: middle;
        }

        /* Platform Header & Navigation */
        .platform-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
        }
        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.42rem;
            color: var(--brand-secondary);
            letter-spacing: -0.5px;
        }
        .navbar-brand-custom .brand-logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-primary) 0%, #FF7854 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.15rem;
            box-shadow: 0 4px 10px rgba(255, 77, 121, 0.35);
        }
        .brand-pulse {
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: #2ED573;
            border-radius: 50%;
            box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.7);
            animation: pulse-green 2s infinite;
        }
        @keyframes pulse-green {
            0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.7); }
            70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(46, 213, 115, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(46, 213, 115, 0); }
        }
        .nav-link-custom {
            font-size: 0.96rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            transition: var(--transition-smooth);
        }
        .nav-link-custom:hover, .nav-link-custom.active {
            color: var(--brand-primary);
            background-color: var(--brand-primary-subtle);
        }
        .nav-search-capsule {
            background-color: #F1F3F9;
            border-radius: var(--radius-pill);
            padding: 6px 14px;
            display: flex;
            align-items: center;
            border: 1px solid transparent;
            transition: var(--transition-smooth);
        }
        .nav-search-capsule:focus-within {
            background-color: #FFFFFF;
            border-color: var(--brand-primary);
            box-shadow: 0 0 0 3px rgba(255, 77, 121, 0.15);
        }
        .nav-search-capsule input {
            border: none;
            background: transparent;
            font-size: 0.88rem;
            outline: none;
            width: 140px;
            color: var(--text-main);
        }
        .btn-brand-primary {
            background: linear-gradient(135deg, var(--brand-primary) 0%, #FF6088 100%);
            color: #FFFFFF;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-md);
            padding: 9px 20px;
            box-shadow: 0 4px 14px rgba(255, 77, 121, 0.28);
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-brand-primary:hover {
            color: #FFFFFF;
            background: linear-gradient(135deg, var(--brand-primary-hover) 0%, #E83B65 100%);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 77, 121, 0.38);
        }
        .btn-brand-ghost {
            background: transparent;
            color: var(--brand-secondary);
            font-weight: 600;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 8px 18px;
            transition: var(--transition-smooth);
        }
        .btn-brand-ghost:hover {
            background-color: #F3F4F8;
            color: var(--brand-secondary);
        }

        /* Bento Hero Layout */
        .bento-hero-section {
            padding: 40px 0 50px;
            background: linear-gradient(180deg, #FFFFFF 0%, var(--bg-base) 100%);
        }
        .bento-card-main {
            position: relative;
            background-image: linear-gradient(135deg, rgba(30, 27, 46, 0.88) 0%, rgba(74, 62, 114, 0.8) 100%), url('/assets/images/2fa0c1bb26e41830.jpg');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-lg);
            padding: 44px;
            color: #FFFFFF;
            box-shadow: var(--shadow-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 400px;
        }
        .bento-card-main h1 {
            font-size: 2.35rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .bento-card-main p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            line-height: 1.7;
            max-width: 620px;
        }
        .bento-card-sub {
            background-color: var(--bg-surface);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            transition: var(--transition-smooth);
            height: 100%;
        }
        .bento-card-sub:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 77, 121, 0.3);
        }
        .bento-cta-bar {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            padding: 16px 24px;
            margin-top: 24px;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* Generic Section Utilities */
        .section-padding {
            padding: 68px 0;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: 1.85rem;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1.02rem;
            max-width: 720px;
            margin: 0 auto;
        }
        .badge-pill-soft {
            background: var(--brand-primary-subtle);
            color: var(--brand-primary);
            font-size: 0.82rem;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 10px;
        }

        /* Card System */
        .custom-card {
            background-color: var(--bg-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .custom-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 77, 121, 0.35);
        }
        .custom-card-img-wrap {
            position: relative;
            height: 190px;
            overflow: hidden;
            background-color: #ECEEF4;
        }
        .custom-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .custom-card:hover .custom-card-img-wrap img {
            transform: scale(1.05);
        }
        .custom-card-body {
            padding: 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .custom-card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .custom-card-text {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }

        /* Service Matrix Cards */
        .service-icon-box {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 20px;
        }
        .bg-coral-light { background: #FFE8EE; color: var(--brand-primary); }
        .bg-purple-light { background: #EFEAFE; color: var(--brand-secondary); }
        .bg-orange-light { background: #FFF4E5; color: var(--brand-accent); }
        .bg-green-light { background: #E6FBF0; color: #10B981; }

        /* Comparison Table Box */
        .comparison-panel {
            background-color: var(--bg-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .table-custom {
            margin: 0;
            vertical-align: middle;
        }
        .table-custom th {
            background-color: #F8F9FD;
            font-weight: 700;
            padding: 18px 24px;
            font-size: 0.95rem;
            color: var(--text-main);
            border-bottom: 1px solid var(--border-subtle);
        }
        .table-custom td {
            padding: 18px 24px;
            font-size: 0.92rem;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-muted);
        }
        .table-custom tr:last-child td {
            border-bottom: none;
        }

        /* Milestone Timeline */
        .timeline-container {
            position: relative;
            padding: 20px 0;
        }
        .timeline-step {
            position: relative;
            padding: 24px;
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .timeline-year {
            font-weight: 800;
            color: var(--brand-primary);
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

        /* Trust & Security Badge Cards */
        .trust-badge-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            padding: 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }
        .trust-badge-card i {
            font-size: 2.4rem;
            color: var(--brand-primary);
            margin-bottom: 16px;
        }

        /* Quickstart Flow */
        .step-bubble {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--brand-secondary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }

        /* Member Showcase Cards */
        .member-avatar-wrap {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            border: 3px solid #FFFFFF;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            overflow: hidden;
            margin: 0 auto 14px;
        }
        .member-avatar-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Accordion FAQ */
        .accordion-item-custom {
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
            background: #FFFFFF;
        }
        .accordion-button-custom {
            font-weight: 700;
            color: var(--text-main);
            background: #FFFFFF;
            padding: 18px 22px;
            box-shadow: none !important;
        }
        .accordion-button-custom:not(.collapsed) {
            color: var(--brand-primary);
            background-color: var(--brand-primary-subtle);
        }
        .accordion-body-custom {
            padding: 18px 22px;
            color: var(--text-muted);
            font-size: 0.94rem;
            line-height: 1.7;
        }

        /* Geo Matrix City Grid */
        .city-pill-btn {
            background-color: #FFFFFF;
            border: 1px solid var(--border-subtle);
            padding: 10px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            color: var(--text-main);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-smooth);
        }
        .city-pill-btn:hover {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
            background-color: var(--brand-primary-subtle);
        }

        /* Form Block Card */
        .conversion-card-wrapper {
            background: linear-gradient(135deg, #1E1B2E 0%, #312A4F 100%);
            border-radius: var(--radius-lg);
            padding: 46px;
            color: #FFFFFF;
            box-shadow: var(--shadow-md);
        }
        .form-control-custom {
            background-color: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #FFFFFF;
            border-radius: var(--radius-sm);
            padding: 12px 16px;
        }
        .form-control-custom:focus {
            background-color: rgba(255, 255, 255, 0.15);
            border-color: var(--brand-primary);
            color: #FFFFFF;
            box-shadow: 0 0 0 3px rgba(255, 77, 121, 0.25);
        }
        .form-control-custom::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        /* Platform Footer */
        .platform-footer {
            background-color: #171524;
            color: #A0A3BD;
            padding: 64px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.92rem;
        }
        .footer-title {
            color: #FFFFFF;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .footer-links-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links-list li {
            margin-bottom: 10px;
        }
        .footer-links-list a {
            color: #A0A3BD;
        }
        .footer-links-list a:hover {
            color: var(--brand-primary);
        }
        .footer-bottom-line {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 48px;
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: #72758E;
        }

        /* Responsive Breakpoints */
        @media (max-width: 991.98px) {
            .bento-card-main {
                padding: 32px 24px;
                min-height: auto;
            }
            .bento-card-main h1 {
                font-size: 1.85rem;
            }
            .conversion-card-wrapper {
                padding: 32px 20px;
            }
        }
        @media (max-width: 767.98px) {
            .section-padding {
                padding: 48px 0;
            }
            .bento-cta-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .nav-search-capsule {
                display: none;
            }
        }

/* roulang page: category1 */
:root {
      --brand-primary: #FF4D79;
      --brand-primary-hover: #E83B65;
      --brand-primary-subtle: #FFF0F4;
      --brand-secondary: #4A3E72;
      --brand-accent: #FFA63D;
      --bg-base: #F8F9FC;
      --bg-surface: #FFFFFF;
      --bg-dark-dashboard: #1E1B2E;
      --border-subtle: #EAEBF0;
      --border-light: #F0F1F6;
      --text-main: #1A1A24;
      --text-muted: #64687A;
      --text-light: #F4F5F9;
      --shadow-sm: 0 4px 16px -2px rgba(74, 62, 114, 0.05);
      --shadow-md: 0 10px 28px -4px rgba(74, 62, 114, 0.08);
      --shadow-hover: 0 16px 36px -6px rgba(255, 77, 121, 0.18);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-pill: 50rem;
      --transition-smooth: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.68;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-smooth);
    }
    a:hover {
      color: var(--brand-primary);
    }
    img {
      max-width: 100%;
      height: auto;
      vertical-align: middle;
    }

    /* Platform Header & Navigation */
    .platform-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-subtle);
      box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
    }
    .navbar-brand-custom {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.42rem;
      color: var(--brand-secondary);
      letter-spacing: -0.5px;
    }
    .navbar-brand-custom .brand-logo-mark {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--brand-primary) 0%, #FF7854 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.15rem;
      box-shadow: 0 4px 10px rgba(255, 77, 121, 0.35);
    }
    .brand-pulse {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: #2ED573;
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.7);
      animation: pulse-green 2s infinite;
    }
    @keyframes pulse-green {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(46, 213, 115, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(46, 213, 115, 0); }
    }
    .nav-link-custom {
      font-size: 0.96rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 16px;
      border-radius: var(--radius-pill);
      transition: var(--transition-smooth);
    }
    .nav-link-custom:hover, .nav-link-custom.active {
      color: var(--brand-primary);
      background-color: var(--brand-primary-subtle);
    }
    .nav-search-capsule {
      background-color: #F1F3F9;
      border-radius: var(--radius-pill);
      padding: 6px 14px;
      display: flex;
      align-items: center;
      border: 1px solid transparent;
      transition: var(--transition-smooth);
    }
    .nav-search-capsule:focus-within {
      background-color: #FFFFFF;
      border-color: var(--brand-primary);
      box-shadow: 0 0 0 3px rgba(255, 77, 121, 0.15);
    }
    .nav-search-capsule input {
      border: none;
      background: transparent;
      font-size: 0.88rem;
      outline: none;
      width: 140px;
      color: var(--text-main);
    }
    .btn-brand-primary {
      background: linear-gradient(135deg, var(--brand-primary) 0%, #FF6088 100%);
      color: #FFFFFF;
      font-weight: 600;
      border: none;
      border-radius: var(--radius-md);
      padding: 9px 20px;
      box-shadow: 0 4px 14px rgba(255, 77, 121, 0.28);
      transition: var(--transition-smooth);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-brand-primary:hover {
      color: #FFFFFF;
      background: linear-gradient(135deg, var(--brand-primary-hover) 0%, #E83B65 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 77, 121, 0.38);
    }
    .btn-brand-ghost {
      background: transparent;
      color: var(--brand-secondary);
      font-weight: 600;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 8px 18px;
      transition: var(--transition-smooth);
    }
    .btn-brand-ghost:hover {
      background-color: #F3F4F8;
      color: var(--brand-secondary);
    }

    /* Category Hero Banner */
    .cat-hero-section {
      background: linear-gradient(135deg, #1E1B2E 0%, #2A2445 100%);
      color: #FFFFFF;
      padding: 48px 0 54px;
      position: relative;
      overflow: hidden;
      border-bottom: 3px solid var(--brand-primary);
    }
    .cat-hero-section::after {
      content: '';
      position: absolute;
      right: -80px;
      bottom: -80px;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(255, 77, 121, 0.25) 0%, rgba(255, 77, 121, 0) 70%);
      border-radius: 50%;
      pointer-events: none;
    }
    .cat-badge-soft {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-pill);
      font-size: 0.88rem;
      font-weight: 500;
      color: var(--brand-accent);
      margin-bottom: 16px;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .cat-hero-title {
      font-size: 2.2rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      margin-bottom: 16px;
    }
    .cat-hero-desc {
      color: #C0C3D6;
      font-size: 1.05rem;
      max-width: 680px;
      margin-bottom: 24px;
    }
    .cat-filter-tabs {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .cat-filter-btn {
      padding: 7px 18px;
      border-radius: var(--radius-pill);
      font-size: 0.9rem;
      background: rgba(255, 255, 255, 0.08);
      color: #E2E4F0;
      border: 1px solid rgba(255, 255, 255, 0.15);
      transition: var(--transition-smooth);
    }
    .cat-filter-btn:hover, .cat-filter-btn.active {
      background: var(--brand-primary);
      color: #FFFFFF;
      border-color: var(--brand-primary);
    }

    /* Pinned Feature Topics */
    .pinned-topic-card {
      background: var(--bg-surface);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-subtle);
      transition: var(--transition-smooth);
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .pinned-topic-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
      border-color: rgba(255, 77, 121, 0.3);
    }
    .pinned-tag {
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: var(--radius-pill);
      background: #FFF1F3;
      color: var(--brand-primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* Feed Grid Card */
    .feed-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
      transition: var(--transition-smooth);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .feed-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(255, 77, 121, 0.35);
    }
    .feed-img-wrap {
      position: relative;
      height: 190px;
      overflow: hidden;
      background-color: #E9ECEF;
    }
    .feed-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .feed-card:hover .feed-img-wrap img {
      transform: scale(1.05);
    }
    .feed-location-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(30, 27, 46, 0.78);
      backdrop-filter: blur(6px);
      color: #fff;
      font-size: 0.78rem;
      padding: 4px 10px;
      border-radius: var(--radius-pill);
    }
    .feed-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .feed-meta-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 12px;
    }
    .feed-author {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .feed-avatar {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--brand-primary-subtle);
      color: var(--brand-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.85rem;
    }
    .feed-author-name {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .feed-status-verified {
      color: #2ED573;
      font-size: 0.8rem;
    }
    .feed-title {
      font-size: 1.12rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .feed-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .feed-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid var(--border-light);
      padding-top: 12px;
      font-size: 0.82rem;
      color: #8C90A4;
    }

    /* Top Contributors & Side Panels */
    .contributor-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 0;
      border-bottom: 1px solid var(--border-light);
    }
    .contributor-item:last-child {
      border-bottom: none;
    }
    .contributor-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #FFE8EE 0%, #FFD6E0 100%);
      color: var(--brand-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 1.1rem;
    }
    .contributor-info h4 {
      font-size: 0.94rem;
      font-weight: 700;
      margin: 0;
      color: var(--text-main);
    }
    .contributor-info p {
      font-size: 0.8rem;
      margin: 0;
      color: var(--text-muted);
    }

    /* Safety & Guidelines Box */
    .guideline-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
      height: 100%;
    }
    .guideline-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: var(--brand-primary-subtle);
      color: var(--brand-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      margin-bottom: 16px;
    }

    /* Micro FAQ */
    .faq-item-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 20px 24px;
      border: 1px solid var(--border-subtle);
      margin-bottom: 16px;
      box-shadow: var(--shadow-sm);
    }
    .faq-item-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--brand-secondary);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    /* Action Banner */
    .action-cta-box {
      background: linear-gradient(135deg, var(--brand-secondary) 0%, #2F274E 100%);
      border-radius: var(--radius-lg);
      padding: 40px;
      color: #FFFFFF;
      box-shadow: var(--shadow-md);
      position: relative;
      overflow: hidden;
    }
    .action-cta-box::before {
      content: '';
      position: absolute;
      top: -40px;
      right: -40px;
      width: 180px;
      height: 180px;
      background: radial-gradient(circle, rgba(255, 77, 121, 0.4) 0%, rgba(255, 77, 121, 0) 70%);
      border-radius: 50%;
    }

    /* Footer custom */
    .footer-custom {
      background-color: #171524;
      color: #9A9EA7;
      padding: 60px 0 30px;
      font-size: 0.92rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 700;
      color: #FFFFFF;
    }
    .footer-col-title {
      color: #FFFFFF;
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #A0A5BA;
      text-decoration: none;
      transition: var(--transition-smooth);
    }
    .footer-links a:hover {
      color: var(--brand-primary);
    }
    .footer-bottom {
      padding-top: 25px;
      margin-top: 40px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      text-align: center;
      font-size: 0.85rem;
      color: #6C7286;
    }

    @media (max-width: 767.98px) {
      .cat-hero-title {
        font-size: 1.7rem;
      }
      .action-cta-box {
        padding: 26px;
      }
    }

/* roulang page: category2 */
:root {
      --brand-primary: #FF4D79;
      --brand-primary-hover: #E83B65;
      --brand-primary-subtle: #FFF0F4;
      --brand-secondary: #4A3E72;
      --brand-accent: #FFA63D;
      --bg-base: #F8F9FC;
      --bg-surface: #FFFFFF;
      --bg-dark-dashboard: #1E1B2E;
      --border-subtle: #EAEBF0;
      --border-light: #F0F1F6;
      --text-main: #1A1A24;
      --text-muted: #64687A;
      --text-light: #F4F5F9;
      --shadow-sm: 0 4px 16px -2px rgba(74, 62, 114, 0.05);
      --shadow-md: 0 10px 28px -4px rgba(74, 62, 114, 0.08);
      --shadow-hover: 0 16px 36px -6px rgba(255, 77, 121, 0.18);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-pill: 50rem;
      --transition-smooth: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.68;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

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

    img {
      max-width: 100%;
      height: auto;
      vertical-align: middle;
    }

    @keyframes pulse-green {
      0% { box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.7); }
      70% { box-shadow: 0 0 0 8px rgba(46, 213, 115, 0); }
      100% { box-shadow: 0 0 0 0 rgba(46, 213, 115, 0); }
    }

    /* Platform Header & Navigation */
    .platform-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-subtle);
      box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
    }
    .navbar-brand-custom {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.42rem;
      color: var(--brand-secondary);
      letter-spacing: -0.5px;
    }
    .navbar-brand-custom .brand-logo-mark {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--brand-primary) 0%, #FF7854 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.15rem;
      box-shadow: 0 4px 10px rgba(255, 77, 121, 0.35);
    }
    .brand-pulse {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: #2ED573;
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.7);
      animation: pulse-green 2s infinite;
    }
    .nav-link-custom {
      font-size: 0.96rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 16px;
      border-radius: var(--radius-pill);
      transition: var(--transition-smooth);
    }
    .nav-link-custom:hover, .nav-link-custom.active {
      color: var(--brand-primary);
      background-color: var(--brand-primary-subtle);
    }
    .nav-search-capsule {
      background-color: #F1F3F9;
      border-radius: var(--radius-pill);
      padding: 6px 14px;
      display: flex;
      align-items: center;
      border: 1px solid transparent;
      transition: var(--transition-smooth);
    }
    .nav-search-capsule:focus-within {
      background-color: #FFFFFF;
      border-color: var(--brand-primary);
      box-shadow: 0 0 0 3px rgba(255, 77, 121, 0.15);
    }
    .nav-search-capsule input {
      border: none;
      background: transparent;
      font-size: 0.88rem;
      outline: none;
      width: 140px;
      color: var(--text-main);
    }
    .btn-brand-primary {
      background: linear-gradient(135deg, var(--brand-primary) 0%, #FF6088 100%);
      color: #FFFFFF;
      font-weight: 600;
      border: none;
      border-radius: var(--radius-md);
      padding: 9px 20px;
      box-shadow: 0 4px 14px rgba(255, 77, 121, 0.28);
      transition: var(--transition-smooth);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-brand-primary:hover {
      color: #FFFFFF;
      background: linear-gradient(135deg, var(--brand-primary-hover) 0%, #E83B65 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 77, 121, 0.38);
    }
    .btn-brand-ghost {
      background: transparent;
      color: var(--brand-secondary);
      font-weight: 600;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 8px 18px;
      transition: var(--transition-smooth);
    }
    .btn-brand-ghost:hover {
      background-color: #F3F4F8;
      color: var(--brand-secondary);
    }

    /* Category Hero & Banner */
    .cat-hero-banner {
      background: linear-gradient(135deg, #1E1B2E 0%, #30294C 60%, #4A3E72 100%);
      padding: 60px 0 48px;
      color: #FFFFFF;
      position: relative;
      overflow: hidden;
    }
    .cat-hero-banner::after {
      content: "";
      position: absolute;
      top: -30%;
      right: -10%;
      width: 480px;
      height: 480px;
      background: radial-gradient(circle, rgba(255, 77, 121, 0.25) 0%, rgba(255, 77, 121, 0) 70%);
      pointer-events: none;
    }
    .badge-sub-pill {
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: #FFA63D;
      padding: 6px 16px;
      border-radius: var(--radius-pill);
      font-size: 0.85rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .cat-hero-title {
      font-size: 2.3rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      margin: 16px 0 12px;
      line-height: 1.3;
    }
    .cat-hero-desc {
      color: rgba(244, 245, 249, 0.82);
      font-size: 1.05rem;
      max-width: 760px;
      margin-bottom: 24px;
    }
    .filter-tags-scroll {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .filter-chip {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      color: #FFFFFF;
      padding: 7px 18px;
      border-radius: var(--radius-pill);
      font-size: 0.88rem;
      transition: var(--transition-smooth);
      cursor: pointer;
    }
    .filter-chip:hover, .filter-chip.active {
      background: var(--brand-primary);
      border-color: var(--brand-primary);
      color: #FFFFFF;
    }

    /* Section Headers */
    .section-head {
      margin-bottom: 32px;
    }
    .section-head-title {
      font-size: 1.68rem;
      font-weight: 800;
      color: var(--brand-secondary);
      position: relative;
      display: inline-block;
    }
    .section-head-title::after {
      content: "";
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 40px;
      height: 4px;
      background: var(--brand-primary);
      border-radius: 2px;
    }
    .section-head-sub {
      color: var(--text-muted);
      font-size: 0.95rem;
      margin-top: 8px;
    }

    /* Pinned Topics */
    .pinned-topic-card {
      background: var(--bg-surface);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: var(--transition-smooth);
    }
    .pinned-topic-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(255, 77, 121, 0.3);
    }
    .pinned-img-box {
      position: relative;
      height: 220px;
      overflow: hidden;
    }
    .pinned-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .pinned-topic-card:hover .pinned-img-box img {
      transform: scale(1.05);
    }
    .pinned-badge-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(30, 27, 46, 0.85);
      backdrop-filter: blur(8px);
      color: #FFA63D;
      font-size: 0.78rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: var(--radius-pill);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .pinned-card-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    /* Feed Grid Card */
    .feed-item-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: var(--transition-smooth);
    }
    .feed-item-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(255, 77, 121, 0.25);
    }
    .feed-cover-box {
      position: relative;
      height: 180px;
      overflow: hidden;
    }
    .feed-cover-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }
    .feed-item-card:hover .feed-cover-box img {
      transform: scale(1.04);
    }
    .feed-city-badge {
      position: absolute;
      bottom: 10px;
      right: 10px;
      background: rgba(30, 27, 46, 0.78);
      color: #fff;
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: var(--radius-pill);
    }
    .feed-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .feed-user-meta {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
    }
    .feed-avatar-circle {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--brand-secondary), var(--brand-primary));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 0.85rem;
      font-weight: 700;
    }
    .feed-card-title {
      font-size: 1.12rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      line-height: 1.4;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .feed-card-summary {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .feed-foot-meta {
      margin-top: auto;
      padding-top: 14px;
      border-top: 1px solid var(--border-light);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* Top Contributors Widget */
    .curator-rank-card {
      background: var(--bg-surface);
      border-radius: var(--radius-lg);
      padding: 24px;
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
    }
    .contributor-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 0;
      border-bottom: 1px solid var(--border-light);
    }
    .contributor-item:last-child {
      border-bottom: none;
    }
    .rank-num {
      width: 24px;
      font-weight: 800;
      font-size: 1rem;
      color: var(--text-muted);
    }
    .rank-num-top {
      color: var(--brand-primary);
    }

    /* Safety & Rule Cards */
    .guideline-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      padding: 24px;
      border-left: 4px solid var(--brand-primary);
      box-shadow: var(--shadow-sm);
      height: 100%;
    }

    /* Accordion FAQ */
    .custom-accordion .accordion-item {
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md) !important;
      margin-bottom: 14px;
      overflow: hidden;
    }
    .custom-accordion .accordion-button {
      font-weight: 700;
      color: var(--brand-secondary);
      background-color: var(--bg-surface);
      box-shadow: none;
      padding: 18px 22px;
    }
    .custom-accordion .accordion-button:not(.collapsed) {
      color: var(--brand-primary);
      background-color: var(--brand-primary-subtle);
    }
    .custom-accordion .accordion-body {
      padding: 18px 22px;
      color: var(--text-muted);
      font-size: 0.94rem;
      background: var(--bg-surface);
    }

    /* Category Bottom CTA */
    .cat-action-block {
      background: linear-gradient(135deg, var(--bg-dark-dashboard) 0%, #352B53 100%);
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      color: #fff;
      box-shadow: var(--shadow-md);
    }

    /* Footer */
    .footer-custom {
      background-color: #151322;
      color: #A0A3BD;
      padding: 60px 0 28px;
      margin-top: 60px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.35rem;
      color: #FFFFFF;
    }
    .footer-logo .brand-logo-mark {
      width: 34px;
      height: 34px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--brand-primary) 0%, #FF7854 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
    }
    .footer-col-title {
      color: #FFFFFF;
      font-weight: 700;
      font-size: 1.05rem;
      margin-bottom: 20px;
      position: relative;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #8C8FA8;
      font-size: 0.92rem;
      transition: var(--transition-smooth);
    }
    .footer-links a:hover {
      color: var(--brand-primary);
      padding-left: 4px;
    }

    @media (max-width: 768px) {
      .cat-hero-title {
        font-size: 1.8rem;
      }
      .cat-action-block {
        padding: 30px 20px;
      }
    }

/* roulang page: category3 */
:root {
            --brand-primary: #FF4D79;
            --brand-primary-hover: #E83B65;
            --brand-primary-subtle: #FFF0F4;
            --brand-secondary: #4A3E72;
            --brand-accent: #FFA63D;
            --bg-base: #F8F9FC;
            --bg-surface: #FFFFFF;
            --bg-dark-dashboard: #1E1B2E;
            --border-subtle: #EAEBF0;
            --border-light: #F0F1F6;
            --text-main: #1A1A24;
            --text-muted: #64687A;
            --text-light: #F4F5F9;
            --shadow-sm: 0 4px 16px -2px rgba(74, 62, 114, 0.05);
            --shadow-md: 0 10px 28px -4px rgba(74, 62, 114, 0.08);
            --shadow-hover: 0 16px 36px -6px rgba(255, 77, 121, 0.18);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-pill: 50rem;
            --transition-smooth: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.68;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: var(--brand-primary);
        }

        img {
            max-width: 100%;
            height: auto;
            vertical-align: middle;
        }

        /* Platform Header & Navigation */
        .platform-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-subtle);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
        }

        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.42rem;
            color: var(--brand-secondary);
            letter-spacing: -0.5px;
        }

        .navbar-brand-custom .brand-logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-primary) 0%, #FF7854 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.15rem;
            box-shadow: 0 4px 10px rgba(255, 77, 121, 0.35);
        }

        .brand-pulse {
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: #2ED573;
            border-radius: 50%;
            box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.7);
            animation: pulse-green 2s infinite;
        }

        @keyframes pulse-green {
            0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.7); }
            70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(46, 213, 115, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(46, 213, 115, 0); }
        }

        .nav-link-custom {
            font-size: 0.96rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 16px;
            border-radius: var(--radius-pill);
            transition: var(--transition-smooth);
        }

        .nav-link-custom:hover, .nav-link-custom.active {
            color: var(--brand-primary);
            background-color: var(--brand-primary-subtle);
        }

        .nav-search-capsule {
            background-color: #F1F3F9;
            border-radius: var(--radius-pill);
            padding: 6px 14px;
            display: flex;
            align-items: center;
            border: 1px solid transparent;
            transition: var(--transition-smooth);
        }

        .nav-search-capsule:focus-within {
            background-color: #FFFFFF;
            border-color: var(--brand-primary);
            box-shadow: 0 0 0 3px rgba(255, 77, 121, 0.15);
        }

        .nav-search-capsule input {
            border: none;
            background: transparent;
            font-size: 0.88rem;
            outline: none;
            width: 140px;
            color: var(--text-main);
        }

        .btn-brand-primary {
            background: linear-gradient(135deg, var(--brand-primary) 0%, #FF6088 100%);
            color: #FFFFFF;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-md);
            padding: 9px 20px;
            box-shadow: 0 4px 14px rgba(255, 77, 121, 0.28);
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-brand-primary:hover {
            color: #FFFFFF;
            background: linear-gradient(135deg, var(--brand-primary-hover) 0%, #E83B65 100%);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 77, 121, 0.38);
        }

        .btn-brand-ghost {
            background: transparent;
            color: var(--brand-secondary);
            font-weight: 600;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 8px 18px;
            transition: var(--transition-smooth);
        }

        .btn-brand-ghost:hover {
            background-color: #F3F4F8;
            color: var(--brand-secondary);
        }

        /* Category Header Banner */
        .category-hero {
            background: linear-gradient(135deg, rgba(30, 27, 46, 0.88) 0%, rgba(74, 62, 114, 0.82) 100%), url('/assets/images/17fc2b0a7158f2f2.jpg');
            background-size: cover;
            background-position: center;
            padding: 56px 0 46px;
            color: #FFFFFF;
            position: relative;
        }

        .category-badge-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.16);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            color: #FFF;
            margin-bottom: 14px;
        }

        .category-hero h1 {
            font-size: 2.3rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .category-hero p {
            color: rgba(244, 245, 249, 0.88);
            font-size: 1.05rem;
            max-width: 680px;
            margin-bottom: 24px;
        }

        .filter-tags-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .filter-tag-pill {
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            font-size: 0.88rem;
            transition: var(--transition-smooth);
        }

        .filter-tag-pill:hover, .filter-tag-pill.active {
            background: var(--brand-primary);
            border-color: var(--brand-primary);
            color: #FFFFFF;
        }

        /* Pinned Feature Topics */
        .pinned-feature-card {
            background: var(--bg-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .pinned-feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 77, 121, 0.2);
        }

        .feature-badge-hot {
            background: rgba(255, 166, 61, 0.15);
            color: #D47915;
            font-weight: 700;
            font-size: 0.76rem;
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Feed Grid Card */
        .feed-item-card {
            background: var(--bg-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .feed-item-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 77, 121, 0.25);
        }

        .feed-cover-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #EDEBF2;
        }

        .feed-cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .feed-item-card:hover .feed-cover-wrap img {
            transform: scale(1.05);
        }

        .feed-tag-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(30, 27, 46, 0.78);
            backdrop-filter: blur(4px);
            color: #FFFFFF;
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            font-weight: 500;
        }

        .feed-body {
            padding: 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .feed-title {
            font-size: 1.12rem;
            font-weight: 700;
            line-height: 1.45;
            color: var(--text-main);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .feed-desc {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex-grow: 1;
        }

        .feed-meta {
            border-top: 1px solid var(--border-light);
            padding-top: 12px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: #8C90A0;
        }

        .feed-author-avatar {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: #E0E2EC;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--brand-secondary);
        }

        /* Contributors Widget */
        .contributor-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .contributor-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .contributor-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, #FF6B8B 0%, #FF8E53 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFF;
            font-weight: 700;
            font-size: 0.95rem;
        }

        /* Guidelines & Safety Tips */
        .guide-box {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-subtle);
            height: 100%;
            box-shadow: var(--shadow-sm);
        }

        .guide-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--brand-primary-subtle);
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            margin-bottom: 16px;
        }

        /* Micro FAQ Accordion */
        .accordion-item {
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            background: #FFFFFF;
        }

        .accordion-button {
            font-weight: 700;
            color: var(--text-main);
            box-shadow: none !important;
            padding: 16px 20px;
            background: #FFFFFF;
        }

        .accordion-button:not(.collapsed) {
            background-color: var(--brand-primary-subtle);
            color: var(--brand-primary);
        }

        .accordion-body {
            font-size: 0.94rem;
            color: var(--text-muted);
            padding: 16px 20px;
            line-height: 1.7;
        }

        /* Bottom Conversion Callout */
        .bottom-action-banner {
            background: linear-gradient(135deg, #2A2440 0%, #1A162B 100%);
            border-radius: var(--radius-lg);
            padding: 44px 36px;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .bottom-action-banner::after {
            content: "";
            position: absolute;
            top: -50px;
            right: -50px;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(255, 77, 121, 0.25) 0%, rgba(255, 77, 121, 0) 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        /* Footer */
        .footer-custom {
            background-color: #171520;
            color: #D3D5E0;
            padding: 60px 0 30px;
            font-size: 0.92rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-col-title {
            font-size: 1rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background-color: var(--brand-primary);
            border-radius: 2px;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #9A9EB2;
            transition: var(--transition-smooth);
        }

        .footer-links a:hover {
            color: var(--brand-primary);
            padding-left: 4px;
        }

        @media (max-width: 991px) {
            .category-hero { padding: 40px 0; }
            .category-hero h1 { font-size: 1.85rem; }
        }

        @media (max-width: 767px) {
            .category-hero { text-align: left; }
            .filter-tags-strip { gap: 6px; }
            .filter-tag-pill { font-size: 0.8rem; padding: 5px 12px; }
            .bottom-action-banner { padding: 30px 20px; }
        }

/* roulang page: category4 */
:root {
      --brand-primary: #FF4D79;
      --brand-primary-hover: #E83B65;
      --brand-primary-subtle: #FFF0F4;
      --brand-secondary: #4A3E72;
      --brand-accent: #FFA63D;
      --bg-base: #F8F9FC;
      --bg-surface: #FFFFFF;
      --bg-dark-dashboard: #1E1B2E;
      --border-subtle: #EAEBF0;
      --border-light: #F0F1F6;
      --text-main: #1A1A24;
      --text-muted: #64687A;
      --text-light: #F4F5F9;
      --shadow-sm: 0 4px 16px -2px rgba(74, 62, 114, 0.05);
      --shadow-md: 0 10px 28px -4px rgba(74, 62, 114, 0.08);
      --shadow-hover: 0 16px 36px -6px rgba(255, 77, 121, 0.18);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-pill: 50rem;
      --transition-smooth: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.68;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

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

    a:hover {
      color: var(--brand-primary);
    }

    img {
      max-width: 100%;
      height: auto;
      vertical-align: middle;
    }

    @keyframes pulse-green {
      0% { box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.7); }
      70% { box-shadow: 0 0 0 8px rgba(46, 213, 115, 0); }
      100% { box-shadow: 0 0 0 0 rgba(46, 213, 115, 0); }
    }

    /* Platform Header */
    .platform-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-subtle);
      box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
    }

    .navbar-brand-custom {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.42rem;
      color: var(--brand-secondary);
      letter-spacing: -0.5px;
    }

    .navbar-brand-custom .brand-logo-mark {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--brand-primary) 0%, #FF7854 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.15rem;
      box-shadow: 0 4px 10px rgba(255, 77, 121, 0.35);
    }

    .brand-pulse {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: #2ED573;
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.7);
      animation: pulse-green 2s infinite;
    }

    .nav-link-custom {
      font-size: 0.96rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 16px;
      border-radius: var(--radius-pill);
      transition: var(--transition-smooth);
    }

    .nav-link-custom:hover, .nav-link-custom.active {
      color: var(--brand-primary);
      background-color: var(--brand-primary-subtle);
    }

    .nav-search-capsule {
      background-color: #F1F3F9;
      border-radius: var(--radius-pill);
      padding: 6px 14px;
      display: flex;
      align-items: center;
      border: 1px solid transparent;
      transition: var(--transition-smooth);
    }

    .nav-search-capsule:focus-within {
      background-color: #FFFFFF;
      border-color: var(--brand-primary);
      box-shadow: 0 0 0 3px rgba(255, 77, 121, 0.15);
    }

    .nav-search-capsule input {
      border: none;
      background: transparent;
      font-size: 0.88rem;
      outline: none;
      width: 140px;
      color: var(--text-main);
    }

    .btn-brand-primary {
      background: linear-gradient(135deg, var(--brand-primary) 0%, #FF6088 100%);
      color: #FFFFFF;
      font-weight: 600;
      border: none;
      border-radius: var(--radius-md);
      padding: 9px 20px;
      box-shadow: 0 4px 14px rgba(255, 77, 121, 0.28);
      transition: var(--transition-smooth);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-brand-primary:hover {
      color: #FFFFFF;
      background: linear-gradient(135deg, var(--brand-primary-hover) 0%, #E83B65 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 77, 121, 0.38);
    }

    .btn-brand-ghost {
      background: transparent;
      color: var(--brand-secondary);
      font-weight: 600;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 8px 18px;
      transition: var(--transition-smooth);
    }

    .btn-brand-ghost:hover {
      background-color: #F3F4F8;
      color: var(--brand-secondary);
    }

    /* Category Specific Styles */
    .cat-hero-banner {
      position: relative;
      background: linear-gradient(135deg, rgba(30, 27, 46, 0.9) 0%, rgba(74, 62, 114, 0.85) 100%), url('/assets/images/72bed6995dc624e0.jpg') center/cover no-repeat;
      padding: 56px 0 48px;
      color: #FFFFFF;
      margin-bottom: 36px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .cat-badge-soft {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      background: rgba(255, 255, 255, 0.14);
      border: 1px solid rgba(255, 255, 255, 0.22);
      border-radius: var(--radius-pill);
      font-size: 0.86rem;
      color: #FFFFFF;
      backdrop-filter: blur(4px);
      margin-bottom: 16px;
    }

    .cat-hero-title {
      font-size: 2.3rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      margin-bottom: 12px;
      line-height: 1.3;
    }

    .cat-hero-desc {
      font-size: 1.05rem;
      color: #E2E4F0;
      max-width: 680px;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .filter-tag-pill {
      display: inline-block;
      padding: 6px 16px;
      background: rgba(255, 255, 255, 0.16);
      color: #FFFFFF;
      border-radius: var(--radius-pill);
      font-size: 0.88rem;
      margin-right: 8px;
      margin-bottom: 8px;
      border: 1px solid transparent;
      transition: var(--transition-smooth);
    }

    .filter-tag-pill:hover, .filter-tag-pill.active {
      background: var(--brand-primary);
      color: #FFFFFF;
      border-color: rgba(255, 255, 255, 0.3);
      box-shadow: 0 4px 12px rgba(255, 77, 121, 0.35);
    }

    .section-header-wrap {
      margin-bottom: 28px;
    }

    .section-title-sm {
      font-size: 1.48rem;
      font-weight: 700;
      color: var(--brand-secondary);
      position: relative;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .section-title-sm::before {
      content: "";
      width: 4px;
      height: 20px;
      background: var(--brand-primary);
      border-radius: 4px;
    }

    /* Pinned Feature Topics */
    .pinned-topic-card {
      background: var(--bg-surface);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-subtle);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition-smooth);
      position: relative;
      overflow: hidden;
    }

    .pinned-topic-card::after {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
    }

    .pinned-topic-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(255, 77, 121, 0.25);
    }

    .pinned-meta {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    /* Category Feed Grid */
    .feed-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-smooth);
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .feed-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(255, 77, 121, 0.2);
    }

    .feed-card-thumb {
      height: 180px;
      overflow: hidden;
      position: relative;
      background-color: #EAEBF0;
    }

    .feed-card-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .feed-card:hover .feed-card-thumb img {
      transform: scale(1.05);
    }

    .feed-tag-badge {
      position: absolute;
      bottom: 10px;
      left: 12px;
      background: rgba(30, 27, 46, 0.75);
      backdrop-filter: blur(4px);
      color: #FFFFFF;
      font-size: 0.75rem;
      padding: 4px 10px;
      border-radius: var(--radius-pill);
    }

    .feed-card-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .feed-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .feed-excerpt {
      font-size: 0.88rem;
      color: var(--text-muted);
      margin-bottom: 16px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      flex-grow: 1;
    }

    .feed-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-top: 14px;
      border-top: 1px solid var(--border-light);
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    .feed-author {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .feed-author-avatar {
      width: 26px;
      height: 26px;
      border-radius: 50%;
      background: var(--brand-primary-subtle);
      color: var(--brand-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.78rem;
      font-weight: 700;
    }

    /* Contributor Sidebar Cards */
    .contributor-list-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      padding: 20px;
      box-shadow: var(--shadow-sm);
    }

    .contributor-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 0;
      border-bottom: 1px solid var(--border-light);
    }

    .contributor-item:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }

    .contributor-item:first-child {
      padding-top: 0;
    }

    .contributor-rank {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: #F1F3F9;
      color: var(--text-muted);
      font-size: 0.75rem;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-right: 10px;
    }

    .contributor-rank.rank-1 {
      background: #FFEAA7;
      color: #D63031;
    }
    .contributor-rank.rank-2 {
      background: #DFE6E9;
      color: #2D3436;
    }
    .contributor-rank.rank-3 {
      background: #FFE8D6;
      color: #E17055;
    }

    /* Guidelines Cards */
    .guideline-card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      padding: 24px;
      height: 100%;
      transition: var(--transition-smooth);
    }

    .guideline-card:hover {
      border-color: var(--brand-primary);
      box-shadow: var(--shadow-sm);
    }

    .guideline-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: var(--brand-primary-subtle);
      color: var(--brand-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      margin-bottom: 16px;
    }

    /* Micro FAQ Accordion */
    .accordion-tree .accordion-item {
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md) !important;
      margin-bottom: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .accordion-tree .accordion-button {
      font-weight: 600;
      color: var(--brand-secondary);
      background-color: var(--bg-surface);
      box-shadow: none;
      padding: 16px 20px;
    }

    .accordion-tree .accordion-button:not(.collapsed) {
      color: var(--brand-primary);
      background-color: var(--brand-primary-subtle);
    }

    .accordion-tree .accordion-body {
      background-color: #FFFFFF;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      padding: 18px 20px;
    }

    /* Category CTA Banner */
    .cat-action-banner {
      background: linear-gradient(135deg, var(--brand-secondary) 0%, #2A2342 100%);
      border-radius: var(--radius-lg);
      padding: 44px 36px;
      color: #FFFFFF;
      position: relative;
      overflow: hidden;
      box-shadow: var(--shadow-md);
      margin-top: 40px;
    }

    .cat-action-banner::after {
      content: "";
      position: absolute;
      right: -30px;
      bottom: -30px;
      width: 220px;
      height: 220px;
      background: radial-gradient(circle, rgba(255, 77, 121, 0.25) 0%, rgba(255, 77, 121, 0) 70%);
      border-radius: 50%;
    }

    /* Footer */
    .footer-custom {
      background: #171520;
      color: #9A9DAE;
      padding: 60px 0 30px;
      margin-top: 60px;
      font-size: 0.92rem;
    }

    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: #FFFFFF;
    }

    .footer-col-title {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
      position: relative;
    }

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

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a {
      color: #9A9DAE;
    }

    .footer-links a:hover {
      color: var(--brand-primary);
      padding-left: 4px;
    }

    @media (max-width: 991px) {
      .cat-hero-title {
        font-size: 1.85rem;
      }
      .nav-search-capsule {
        display: none !important;
      }
    }

/* roulang page: category5 */
:root {
        --brand-primary: #FF4D79;
        --brand-primary-hover: #E83B65;
        --brand-primary-subtle: #FFF0F4;
        --brand-secondary: #4A3E72;
        --brand-accent: #FFA63D;
        --bg-base: #F8F9FC;
        --bg-surface: #FFFFFF;
        --bg-dark-dashboard: #1E1B2E;
        --border-subtle: #EAEBF0;
        --border-light: #F0F1F6;
        --text-main: #1A1A24;
        --text-muted: #64687A;
        --text-light: #F4F5F9;
        --shadow-sm: 0 4px 16px -2px rgba(74, 62, 114, 0.05);
        --shadow-md: 0 10px 28px -4px rgba(74, 62, 114, 0.08);
        --shadow-hover: 0 16px 36px -6px rgba(255, 77, 121, 0.18);
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 20px;
        --radius-pill: 50rem;
        --transition-smooth: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

    body {
        font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
        background-color: var(--bg-base);
        color: var(--text-main);
        line-height: 1.68;
        margin: 0;
        padding: 0;
        -webkit-font-smoothing: antialiased;
    }

    a {
        color: inherit;
        text-decoration: none;
        transition: var(--transition-smooth);
    }
    a:hover {
        color: var(--brand-primary);
    }
    img {
        max-width: 100%;
        height: auto;
        vertical-align: middle;
    }

    /* Platform Header */
    .platform-header {
        position: sticky;
        top: 0;
        z-index: 1030;
        background: rgba(255, 255, 255, 0.94);
        backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--border-subtle);
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
    }
    .navbar-brand-custom {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 800;
        font-size: 1.42rem;
        color: var(--brand-secondary);
        letter-spacing: -0.5px;
    }
    .navbar-brand-custom .brand-logo-mark {
        width: 38px;
        height: 38px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--brand-primary) 0%, #FF7854 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 1.15rem;
        box-shadow: 0 4px 10px rgba(255, 77, 121, 0.35);
    }
    .brand-pulse {
        display: inline-block;
        width: 8px;
        height: 8px;
        background-color: #2ED573;
        border-radius: 50%;
        box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.7);
        animation: pulse-green 2s infinite;
    }
    @keyframes pulse-green {
        0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(46, 213, 115, 0.7); }
        70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(46, 213, 115, 0); }
        100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(46, 213, 115, 0); }
    }
    .nav-link-custom {
        font-size: 0.96rem;
        font-weight: 500;
        color: var(--text-muted);
        padding: 8px 16px;
        border-radius: var(--radius-pill);
        transition: var(--transition-smooth);
    }
    .nav-link-custom:hover, .nav-link-custom.active {
        color: var(--brand-primary);
        background-color: var(--brand-primary-subtle);
    }
    .nav-search-capsule {
        background-color: #F1F3F9;
        border-radius: var(--radius-pill);
        padding: 6px 14px;
        display: flex;
        align-items: center;
        border: 1px solid transparent;
        transition: var(--transition-smooth);
    }
    .nav-search-capsule:focus-within {
        background-color: #FFFFFF;
        border-color: var(--brand-primary);
        box-shadow: 0 0 0 3px rgba(255, 77, 121, 0.15);
    }
    .nav-search-capsule input {
        border: none;
        background: transparent;
        font-size: 0.88rem;
        outline: none;
        width: 140px;
        color: var(--text-main);
    }
    .btn-brand-primary {
        background: linear-gradient(135deg, var(--brand-primary) 0%, #FF6088 100%);
        color: #FFFFFF;
        font-weight: 600;
        border: none;
        border-radius: var(--radius-md);
        padding: 9px 20px;
        box-shadow: 0 4px 14px rgba(255, 77, 121, 0.28);
        transition: var(--transition-smooth);
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }
    .btn-brand-primary:hover {
        color: #FFFFFF;
        background: linear-gradient(135deg, var(--brand-primary-hover) 0%, #E83B65 100%);
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(255, 77, 121, 0.38);
    }
    .btn-brand-ghost {
        background: transparent;
        color: var(--brand-secondary);
        font-weight: 600;
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        padding: 8px 18px;
        transition: var(--transition-smooth);
    }
    .btn-brand-ghost:hover {
        background-color: #F3F4F8;
        color: var(--brand-secondary);
    }

    /* Category Hero & Questionnaire Preview */
    .cat-hero-wrap {
        background: linear-gradient(135deg, rgba(30, 27, 46, 0.92) 0%, rgba(74, 62, 114, 0.88) 100%), url('/assets/images/8803a38cd5234743.jpg') center/cover no-repeat;
        padding: 58px 0 64px;
        color: #FFFFFF;
        position: relative;
    }
    .cat-hero-h1 {
        font-size: 2.3rem;
        font-weight: 800;
        line-height: 1.3;
        margin-bottom: 14px;
        letter-spacing: -0.5px;
    }
    .cat-badge-shield {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(255, 255, 255, 0.12);
        backdrop-filter: blur(8px);
        border: 1px solid rgba(255, 255, 255, 0.25);
        color: #FFD480;
        font-size: 0.85rem;
        font-weight: 600;
        padding: 5px 14px;
        border-radius: var(--radius-pill);
        margin-bottom: 18px;
    }
    .cat-hero-lead {
        font-size: 1.05rem;
        color: #E2E4F0;
        max-width: 640px;
        margin-bottom: 24px;
    }
    .filter-tags-scroll {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    .filter-tag-item {
        background: rgba(255, 255, 255, 0.12);
        color: #FFFFFF;
        padding: 6px 16px;
        border-radius: var(--radius-pill);
        font-size: 0.88rem;
        border: 1px solid rgba(255, 255, 255, 0.18);
        transition: var(--transition-smooth);
    }
    .filter-tag-item:hover, .filter-tag-item.active {
        background: var(--brand-primary);
        border-color: var(--brand-primary);
        color: #FFFFFF;
    }

    /* Safety Assessment Widget in Hero */
    .safety-quiz-card {
        background: #FFFFFF;
        color: var(--text-main);
        border-radius: var(--radius-lg);
        padding: 24px;
        box-shadow: 0 16px 36px rgba(0, 0, 0, 0.2);
    }
    .quiz-title {
        font-size: 1.12rem;
        font-weight: 700;
        color: var(--brand-secondary);
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 12px;
    }
    .quiz-item-check {
        background: #F8F9FD;
        border: 1px solid var(--border-subtle);
        border-radius: 10px;
        padding: 10px 14px;
        margin-bottom: 10px;
        font-size: 0.88rem;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        transition: var(--transition-smooth);
    }
    .quiz-item-check:hover {
        border-color: var(--brand-primary);
        background: var(--brand-primary-subtle);
    }
    .quiz-score-meter {
        background: #EDF2F7;
        height: 8px;
        border-radius: 4px;
        overflow: hidden;
        margin: 12px 0 16px;
    }
    .quiz-score-fill {
        width: 88%;
        height: 100%;
        background: linear-gradient(90deg, #2ED573 0%, var(--brand-accent) 100%);
    }

    /* Section Global Headers */
    .section-block {
        padding: 60px 0;
    }
    .section-header-wrap {
        margin-bottom: 36px;
    }
    .section-badge-sub {
        color: var(--brand-primary);
        font-weight: 700;
        font-size: 0.85rem;
        text-transform: uppercase;
        letter-spacing: 1px;
        display: inline-block;
        margin-bottom: 6px;
    }
    .section-main-title {
        font-size: 1.85rem;
        font-weight: 800;
        color: var(--brand-secondary);
        letter-spacing: -0.3px;
        margin-bottom: 8px;
    }
    .section-desc-muted {
        color: var(--text-muted);
        font-size: 0.96rem;
    }

    /* Pinned Feature Topics */
    .pinned-card {
        background: #FFFFFF;
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-subtle);
        padding: 28px;
        height: 100%;
        transition: var(--transition-smooth);
        box-shadow: var(--shadow-sm);
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        position: relative;
        overflow: hidden;
    }
    .pinned-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, var(--brand-primary) 0%, var(--brand-accent) 100%);
    }
    .pinned-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
        border-color: rgba(255, 77, 121, 0.3);
    }
    .pinned-tag {
        font-size: 0.78rem;
        font-weight: 700;
        padding: 4px 10px;
        border-radius: var(--radius-pill);
        display: inline-flex;
        align-items: center;
        gap: 5px;
        width: fit-content;
        margin-bottom: 12px;
    }
    .pinned-tag.danger {
        background: #FFF1F0;
        color: #E03131;
    }
    .pinned-tag.warning {
        background: #FFF9DB;
        color: #F08C00;
    }

    /* Feed Grid Cards */
    .feed-rule-card {
        background: #FFFFFF;
        border-radius: var(--radius-md);
        border: 1px solid var(--border-subtle);
        overflow: hidden;
        transition: var(--transition-smooth);
        box-shadow: var(--shadow-sm);
        height: 100%;
        display: flex;
        flex-direction: column;
    }
    .feed-rule-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-hover);
        border-color: rgba(255, 77, 121, 0.3);
    }
    .feed-card-thumb-wrap {
        height: 180px;
        position: relative;
        overflow: hidden;
    }
    .feed-card-thumb-wrap img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
    }
    .feed-rule-card:hover .feed-card-thumb-wrap img {
        transform: scale(1.05);
    }
    .feed-rule-category-badge {
        position: absolute;
        top: 12px;
        left: 12px;
        background: rgba(30, 27, 46, 0.78);
        color: #FFFFFF;
        backdrop-filter: blur(4px);
        font-size: 0.75rem;
        font-weight: 600;
        padding: 3px 10px;
        border-radius: var(--radius-pill);
    }
    .feed-card-body {
        padding: 20px;
        display: flex;
        flex-direction: column;
        flex-grow: 1;
        justify-content: space-between;
    }
    .feed-card-title {
        font-size: 1.15rem;
        font-weight: 700;
        color: var(--brand-secondary);
        margin-bottom: 8px;
        line-height: 1.4;
    }
    .feed-card-summary {
        color: var(--text-muted);
        font-size: 0.9rem;
        line-height: 1.6;
        margin-bottom: 16px;
    }
    .feed-card-meta {
        font-size: 0.8rem;
        color: #8C90A4;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-top: 12px;
        border-top: 1px solid var(--border-light);
    }

    /* Top Contributors / Supervisors List */
    .supervisor-card {
        background: #FFFFFF;
        border-radius: var(--radius-md);
        border: 1px solid var(--border-subtle);
        padding: 20px;
        display: flex;
        align-items: center;
        gap: 16px;
        box-shadow: var(--shadow-sm);
        transition: var(--transition-smooth);
    }
    .supervisor-card:hover {
        border-color: var(--brand-primary);
        box-shadow: var(--shadow-md);
    }
    .supervisor-avatar {
        width: 52px;
        height: 52px;
        border-radius: 50%;
        background: #F0F2F8;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.35rem;
        color: var(--brand-primary);
        flex-shrink: 0;
        border: 2px solid var(--brand-primary-subtle);
    }
    .supervisor-badge-rank {
        font-size: 0.72rem;
        background: #EDF2FF;
        color: #3B5BDB;
        padding: 2px 8px;
        border-radius: var(--radius-pill);
        font-weight: 600;
    }

    /* Safety Guidelines 3-Column */
    .guideline-item-card {
        background: #FFFFFF;
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-subtle);
        padding: 30px;
        text-align: center;
        height: 100%;
        box-shadow: var(--shadow-sm);
        transition: var(--transition-smooth);
    }
    .guideline-item-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
    }
    .guideline-icon-ring {
        width: 64px;
        height: 64px;
        border-radius: 50%;
        background: var(--brand-primary-subtle);
        color: var(--brand-primary);
        font-size: 1.6rem;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 18px;
    }

    /* Micro FAQ Accordion */
    .faq-accordion-custom .accordion-item {
        background: #FFFFFF;
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md) !important;
        margin-bottom: 12px;
        overflow: hidden;
    }
    .faq-accordion-custom .accordion-button {
        font-weight: 700;
        font-size: 1rem;
        color: var(--brand-secondary);
        background: #FFFFFF;
        padding: 18px 22px;
        box-shadow: none;
    }
    .faq-accordion-custom .accordion-button:not(.collapsed) {
        color: var(--brand-primary);
        background: var(--brand-primary-subtle);
    }
    .faq-accordion-custom .accordion-button::after {
        background-size: 14px;
    }
    .faq-accordion-custom .accordion-body {
        padding: 16px 22px 22px;
        color: var(--text-muted);
        font-size: 0.94rem;
        line-height: 1.7;
    }

    /* Bottom Action Banner */
    .cat-action-banner {
        background: linear-gradient(135deg, var(--bg-dark-dashboard) 0%, var(--brand-secondary) 100%);
        border-radius: var(--radius-lg);
        padding: 44px;
        color: #FFFFFF;
        position: relative;
        overflow: hidden;
        box-shadow: var(--shadow-md);
    }
    .cat-action-banner::after {
        content: '';
        position: absolute;
        top: -60px;
        right: -60px;
        width: 220px;
        height: 220px;
        background: radial-gradient(circle, rgba(255, 77, 121, 0.3) 0%, transparent 70%);
        pointer-events: none;
    }

    /* Shared Footer */
    .footer-custom {
        background-color: #161424;
        color: #A6A9BC;
        padding: 60px 0 30px;
        font-size: 0.92rem;
    }
    .footer-custom .footer-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 800;
        font-size: 1.35rem;
        color: #FFFFFF;
    }
    .footer-custom .footer-logo .brand-logo-mark {
        width: 32px;
        height: 32px;
        border-radius: 8px;
        background: linear-gradient(135deg, var(--brand-primary) 0%, #FF7854 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 1rem;
    }
    .footer-col-title {
        color: #FFFFFF;
        font-weight: 700;
        font-size: 1rem;
        margin-bottom: 20px;
    }
    .footer-links {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .footer-links li {
        margin-bottom: 10px;
    }
    .footer-links a {
        color: #9295A8;
        transition: var(--transition-smooth);
    }
    .footer-links a:hover {
        color: var(--brand-primary);
        padding-left: 4px;
    }

/* 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}