/* roulang page: index */
:root {
            --bg-base: #070b14;
            --bg-surface: #0c1427;
            --bg-elevated: #0f1d38;
            --bg-card: rgba(13, 24, 46, 0.72);
            --border-hud: rgba(0, 240, 255, 0.22);
            --border-bright: rgba(0, 240, 255, 0.6);
            --neon-blue: #00f0ff;
            --neon-green: #00ffa3;
            --neon-purple: #7928ca;
            --neon-pink: #ff007f;
            --text-title: #ffffff;
            --text-subtitle: #d0d8e8;
            --text-body: #8b9bb4;
            --text-dim: #4a5b78;
            --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.45);
            --radius-md: 8px;
            --radius-sm: 4px;
        }

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

        body {
            background-color: var(--bg-base);
            background-image: 
                radial-gradient(circle at 15% 15%, rgba(121, 40, 202, 0.12) 0%, transparent 40%),
                radial-gradient(circle at 85% 75%, rgba(0, 240, 255, 0.1) 0%, transparent 45%),
                linear-gradient(180deg, #070b14 0%, #0c1427 50%, #070b14 100%);
            color: var(--text-body);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
        }

        a {
            color: var(--neon-blue);
            text-decoration: none;
            transition: all 0.25s ease;
        }

        a:hover, a:focus {
            color: #ffffff;
            text-shadow: 0 0 8px var(--neon-blue);
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-title);
            font-weight: 700;
            letter-spacing: 0.5px;
            margin-bottom: 0.85rem;
        }

        p {
            margin-bottom: 1.25rem;
            color: var(--text-body);
        }

        .site-container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        /* HUD Glassmorphism Card System */
        .hud-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-hud);
            border-radius: var(--radius-md);
            position: relative;
            padding: 1.75rem;
            margin-bottom: 1.75rem;
            transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .hud-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-bright);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5), 0 0 16px rgba(0, 240, 255, 0.25);
        }

        .hud-card::before, .hud-card::after {
            content: '';
            position: absolute;
            width: 8px;
            height: 8px;
            pointer-events: none;
        }

        .hud-card::before {
            top: 0;
            left: 0;
            border-top: 2px solid var(--neon-blue);
            border-left: 2px solid var(--neon-blue);
        }

        .hud-card::after {
            bottom: 0;
            right: 0;
            border-bottom: 2px solid var(--neon-green);
            border-right: 2px solid var(--neon-green);
        }

        /* Buttons & Badges */
        .btn-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.75rem 1.75rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: #070b14;
            background: linear-gradient(135deg, var(--neon-blue) 0%, var(--neon-green) 100%);
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.35);
            transition: all 0.25s ease;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .btn-neon:hover {
            transform: scale(1.02);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.65);
            color: #000000;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.75rem 1.75rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--neon-blue);
            background: rgba(0, 240, 255, 0.05);
            border: 1px solid var(--neon-blue);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.15);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            color: #ffffff;
        }

        .hud-badge {
            display: inline-block;
            padding: 0.25rem 0.65rem;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--neon-green);
            background: rgba(0, 255, 163, 0.12);
            border: 1px solid rgba(0, 255, 163, 0.35);
            border-radius: 2px;
            letter-spacing: 0.5px;
        }

        .hud-badge-blue {
            color: var(--neon-blue);
            background: rgba(0, 240, 255, 0.1);
            border-color: rgba(0, 240, 255, 0.3);
        }

        .hud-badge-purple {
            color: #d175ff;
            background: rgba(121, 40, 202, 0.15);
            border-color: rgba(121, 40, 202, 0.4);
        }

        /* Header & Dual Navigation */
        .site-header {
            background: rgba(7, 11, 20, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.9rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.35rem;
            font-weight: 800;
            color: #ffffff;
            text-transform: tracking;
        }

        .brand-logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
            clip-path: polygon(25% 0%, 100% 0%, 75% 100%, 0% 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #070b14;
            font-size: 1rem;
            font-weight: 900;
        }

        .header-status-metrics {
            display: flex;
            align-items: center;
            gap: 1.5rem;
        }

        .node-pulse-indicator {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-subtitle);
        }

        .pulse-dot {
            width: 8px;
            height: 8px;
            background: var(--neon-green);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--neon-green);
            animation: pulse-glow 1.8s infinite;
        }

        @keyframes pulse-glow {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.85); }
        }

        .channel-nav-row {
            display: flex;
            align-items: center;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: none;
            padding: 0.35rem 0;
        }

        .channel-nav-row::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-block;
            padding: 0.65rem 1.35rem;
            color: var(--text-subtitle);
            font-size: 0.92rem;
            font-weight: 600;
            position: relative;
            transition: all 0.25s ease;
        }

        .channel-link:hover, .channel-link.active {
            color: var(--neon-blue);
        }

        .channel-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 1.35rem;
            right: 1.35rem;
            height: 2px;
            background: var(--neon-blue);
            box-shadow: 0 0 10px var(--neon-blue);
        }

        /* Section Layout Styles */
        .section-block {
            padding: 4.5rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.03);
            position: relative;
        }

        .section-header {
            margin-bottom: 2.75rem;
        }

        .section-header .sub-kicker {
            color: var(--neon-blue);
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 0.5rem;
            display: block;
        }

        .section-header h2 {
            font-size: 2.1rem;
            line-height: 1.3;
        }

        .section-header p {
            max-width: 820px;
            font-size: 1.05rem;
            color: var(--text-subtitle);
            margin-bottom: 0;
        }

        /* Hero / Metric Dashboard Section */
        .hero-dashboard {
            padding: 4rem 0 3.5rem;
            background: radial-gradient(circle at 50% 10%, rgba(0, 240, 255, 0.08) 0%, transparent 60%);
        }

        .hero-title-area {
            margin-bottom: 2.5rem;
        }

        .hero-title-area h1 {
            font-size: 2.85rem;
            line-height: 1.25;
            margin-bottom: 1.25rem;
            background: linear-gradient(135deg, #ffffff 40%, var(--neon-blue) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-title-area .lead-text {
            font-size: 1.15rem;
            color: var(--text-subtitle);
            line-height: 1.8;
            max-width: 900px;
            margin-bottom: 2rem;
        }

        .metric-dial-box {
            border-left: 2px solid var(--neon-blue);
            padding-left: 1.25rem;
            background: rgba(0, 240, 255, 0.03);
            padding: 1.25rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }

        .metric-dial-num {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--neon-blue);
            line-height: 1.1;
            font-feature-settings: "tnum";
        }

        .metric-dial-label {
            font-size: 0.85rem;
            color: var(--text-subtitle);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-top: 0.25rem;
        }

        .progress-hud {
            width: 100%;
            height: 6px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 3px;
            margin-top: 0.75rem;
            overflow: hidden;
        }

        .progress-hud-bar {
            height: 100%;
            background: linear-gradient(90deg, var(--neon-blue), var(--neon-green));
            border-radius: 3px;
        }

        /* Comparison Table Component */
        .hud-table-wrapper {
            overflow-x: auto;
            border: 1px solid var(--border-hud);
            border-radius: var(--radius-md);
            background: var(--bg-card);
        }

        .hud-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            margin: 0;
            background: transparent;
        }

        .hud-table th {
            background: rgba(15, 29, 56, 0.9);
            color: var(--neon-blue);
            font-weight: 700;
            padding: 1.1rem 1.25rem;
            border-bottom: 1px solid var(--border-hud);
            font-size: 0.95rem;
        }

        .hud-table td {
            padding: 1.1rem 1.25rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            color: var(--text-subtitle);
            font-size: 0.92rem;
        }

        .hud-table tr:hover td {
            background: rgba(0, 240, 255, 0.03);
        }

        .hud-table .highlight-col {
            color: var(--neon-green);
            font-weight: 600;
            background: rgba(0, 255, 163, 0.04);
        }

        /* Timeline Milestone */
        .milestone-track {
            position: relative;
            padding-left: 2.2rem;
            border-left: 2px solid rgba(0, 240, 255, 0.25);
            margin-left: 0.8rem;
        }

        .milestone-step {
            position: relative;
            margin-bottom: 2.5rem;
        }

        .milestone-step:last-child {
            margin-bottom: 0;
        }

        .milestone-node {
            position: absolute;
            left: -2.85rem;
            top: 0.2rem;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--bg-base);
            border: 3px solid var(--neon-blue);
            box-shadow: 0 0 10px var(--neon-blue);
        }

        /* Category Gateway Card */
        .gateway-card {
            background: linear-gradient(145deg, rgba(13, 24, 46, 0.9), rgba(15, 29, 56, 0.8));
            border: 1px solid var(--border-hud);
            border-radius: var(--radius-md);
            padding: 2.25rem;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
            height: 100%;
        }

        .gateway-card:hover {
            border-color: var(--neon-blue);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.25);
            transform: translateY(-5px);
        }

        .gateway-card-glow {
            position: absolute;
            top: -40px;
            right: -40px;
            width: 140px;
            height: 140px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        /* Accordion FAQ */
        .hud-accordion {
            list-style: none;
            margin: 0;
        }

        .hud-accordion-item {
            border: 1px solid var(--border-hud);
            border-radius: var(--radius-sm);
            margin-bottom: 0.85rem;
            background: var(--bg-card);
            overflow: hidden;
        }

        .hud-accordion-trigger {
            width: 100%;
            text-align: left;
            padding: 1.25rem 1.5rem;
            background: transparent;
            border: none;
            color: var(--text-title);
            font-size: 1.05rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            transition: background 0.2s ease;
        }

        .hud-accordion-trigger:hover {
            background: rgba(0, 240, 255, 0.05);
            color: var(--neon-blue);
        }

        .hud-arrow-icon {
            font-size: 0.85rem;
            color: var(--neon-blue);
            transition: transform 0.3s ease;
        }

        .hud-accordion-item.open .hud-arrow-icon {
            transform: rotate(90deg);
            color: var(--neon-green);
        }

        .hud-accordion-panel {
            padding: 0 1.5rem 1.25rem;
            color: var(--text-subtitle);
            display: none;
            font-size: 0.95rem;
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        .hud-accordion-item.open .hud-accordion-panel {
            display: block;
        }

        /* Leaderboard & Status List */
        .rank-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.95rem 1.25rem;
            background: rgba(15, 29, 56, 0.45);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-sm);
            margin-bottom: 0.65rem;
            transition: all 0.2s ease;
        }

        .rank-row:hover {
            border-color: var(--neon-blue);
            background: rgba(15, 29, 56, 0.85);
            transform: translateX(4px);
        }

        .rank-tag {
            font-weight: 800;
            color: var(--neon-blue);
            font-size: 0.95rem;
            width: 32px;
        }

        .rank-name {
            flex-grow: 1;
            padding-left: 0.75rem;
            color: #ffffff;
            font-weight: 600;
            font-size: 0.95rem;
        }

        .rank-val {
            font-family: monospace;
            color: var(--neon-green);
            font-weight: 700;
            font-size: 0.95rem;
        }

        /* Configurator Interactive Form */
        .config-form {
            background: rgba(13, 24, 46, 0.85);
            border: 1px solid var(--border-hud);
            border-radius: var(--radius-md);
            padding: 2.25rem;
        }

        .config-field-group {
            margin-bottom: 1.5rem;
        }

        .config-label {
            display: block;
            font-size: 0.88rem;
            color: var(--text-subtitle);
            margin-bottom: 0.5rem;
            font-weight: 600;
        }

        .config-select, .config-input {
            width: 100%;
            padding: 0.8rem 1rem;
            background: rgba(7, 11, 20, 0.8);
            border: 1px solid var(--border-hud);
            border-radius: var(--radius-sm);
            color: #ffffff;
            outline: none;
            font-size: 0.92rem;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .config-select:focus, .config-input:focus {
            border-color: var(--neon-blue);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
            background: rgba(7, 11, 20, 0.95);
        }

        /* Site Footer */
        .site-footer {
            background: #04070d;
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding: 3.5rem 0 2rem;
            color: var(--text-dim);
            font-size: 0.88rem;
        }

        .footer-brand-title {
            font-size: 1.2rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 0.75rem;
        }

        .footer-meta-line {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            flex-wrap: wrap;
            gap: 1rem;
        }

        /* Responsive Breakpoints */
        @media (max-width: 1024px) {
            .hero-title-area h1 {
                font-size: 2.35rem;
            }
            .section-block {
                padding: 3.5rem 0;
            }
        }

        @media (max-width: 640px) {
            .header-brand-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.85rem;
            }
            .header-status-metrics {
                width: 100%;
                justify-content: space-between;
            }
            .hero-title-area h1 {
                font-size: 1.85rem;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .metric-dial-num {
                font-size: 2rem;
            }
            .hud-card {
                padding: 1.25rem;
            }
        }

/* roulang page: category2 */
:root {
      --bg-base: #070b14;
      --bg-surface: #0c1427;
      --bg-elevated: #0f1d38;
      --bg-card: rgba(13, 24, 46, 0.72);
      --border-hud: rgba(0, 240, 255, 0.22);
      --border-bright: rgba(0, 240, 255, 0.6);
      --neon-blue: #00f0ff;
      --neon-green: #00ffa3;
      --neon-purple: #7928ca;
      --neon-pink: #ff007f;
      --text-title: #ffffff;
      --text-subtitle: #d0d8e8;
      --text-body: #8b9bb4;
      --text-dim: #4a5b78;
      --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.45);
      --radius-md: 8px;
      --radius-sm: 4px;
    }
    
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      background-color: var(--bg-base);
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(121, 40, 202, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 85% 75%, rgba(0, 240, 255, 0.1) 0%, transparent 45%),
        linear-gradient(180deg, #070b14 0%, #0c1427 50%, #070b14 100%);
      color: var(--text-body);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      min-height: 100vh;
    }

    a {
      color: var(--neon-blue);
      text-decoration: none;
      transition: all 0.25s ease;
    }
    a:hover, a:focus {
      color: #ffffff;
      text-shadow: 0 0 8px var(--neon-blue);
    }

    .site-container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 1.25rem;
    }

    /* HUD Glassmorphism Card System */
    .hud-card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border-hud);
      border-radius: var(--radius-md);
      position: relative;
      padding: 1.75rem;
      margin-bottom: 1.75rem;
      transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
    }
    .hud-card:hover {
      transform: translateY(-4px);
      border-color: var(--border-bright);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5), 0 0 16px rgba(0, 240, 255, 0.25);
    }
    .hud-card::before, .hud-card::after {
      content: '';
      position: absolute;
      width: 8px;
      height: 8px;
      pointer-events: none;
    }
    .hud-card::before {
      top: 0;
      left: 0;
      border-top: 2px solid var(--neon-blue);
      border-left: 2px solid var(--neon-blue);
    }
    .hud-card::after {
      bottom: 0;
      right: 0;
      border-bottom: 2px solid var(--neon-green);
      border-right: 2px solid var(--neon-green);
    }

    /* Buttons & Badges */
    .btn-neon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.75rem 1.75rem;
      font-size: 0.95rem;
      font-weight: 600;
      color: #070b14;
      background: linear-gradient(135deg, var(--neon-blue) 0%, var(--neon-green) 100%);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 0 12px rgba(0, 240, 255, 0.35);
      transition: all 0.25s ease;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .btn-neon:hover {
      transform: scale(1.02);
      box-shadow: 0 0 24px rgba(0, 240, 255, 0.65);
      color: #000000;
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.75rem 1.75rem;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--neon-blue);
      background: rgba(0, 240, 255, 0.05);
      border: 1px solid var(--neon-blue);
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s ease;
    }
    .btn-outline:hover {
      background: rgba(0, 240, 255, 0.15);
      box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
      color: #ffffff;
    }
    .hud-badge {
      display: inline-block;
      padding: 0.25rem 0.65rem;
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--neon-green);
      background: rgba(0, 255, 163, 0.12);
      border: 1px solid rgba(0, 255, 163, 0.35);
      border-radius: 2px;
      letter-spacing: 0.5px;
    }
    .hud-badge-blue {
      color: var(--neon-blue);
      background: rgba(0, 240, 255, 0.1);
      border-color: rgba(0, 240, 255, 0.3);
    }
    .hud-badge-purple {
      color: #d175ff;
      background: rgba(121, 40, 202, 0.15);
      border-color: rgba(121, 40, 202, 0.4);
    }

    /* Header & Dual Navigation */
    .site-header {
      background: rgba(7, 11, 20, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(0, 240, 255, 0.15);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .header-brand-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0.9rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.35rem;
      font-weight: 800;
      color: #ffffff;
      text-transform: tracking;
    }
    .brand-logo-icon {
      width: 34px;
      height: 34px;
      background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
      clip-path: polygon(25% 0%, 100% 0%, 75% 100%, 0% 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #070b14;
      font-size: 1rem;
      font-weight: 900;
    }
    .header-status-metrics {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .node-pulse-indicator {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.82rem;
      color: var(--neon-green);
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--neon-green);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--neon-green);
      animation: pulseAnim 2s infinite;
    }
    @keyframes pulseAnim {
      0% { transform: scale(0.9); opacity: 0.7; }
      50% { transform: scale(1.3); opacity: 1; box-shadow: 0 0 12px var(--neon-green); }
      100% { transform: scale(0.9); opacity: 0.7; }
    }
    .channel-nav-row {
      display: flex;
      align-items: center;
      gap: 1.5rem;
      overflow-x: auto;
      white-space: nowrap;
      padding: 0.75rem 0;
      scrollbar-width: none;
    }
    .channel-nav-row::-webkit-scrollbar {
      display: none;
    }
    .channel-link {
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-subtitle);
      padding: 0.35rem 0.6rem;
      border-bottom: 2px solid transparent;
      transition: all 0.2s ease;
    }
    .channel-link:hover, .channel-link.active {
      color: var(--neon-blue);
      border-bottom-color: var(--neon-blue);
      background: linear-gradient(180deg, transparent 0%, rgba(0, 240, 255, 0.08) 100%);
    }

    /* Category Specific Styles */
    .category-hero {
      padding: 2.5rem 0 1.5rem;
      position: relative;
    }
    .cat-badge-box {
      background: rgba(15, 29, 56, 0.85);
      border: 1px solid var(--border-bright);
      border-radius: var(--radius-md);
      padding: 1.25rem 1.75rem;
      text-align: center;
      box-shadow: 0 0 25px rgba(0, 240, 255, 0.15);
    }
    .cat-score-num {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--neon-blue);
      line-height: 1;
      text-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
    }

    /* Filter Toolbar */
    .filter-toolbar-box {
      background: rgba(12, 20, 39, 0.8);
      border: 1px solid rgba(0, 240, 255, 0.15);
      border-radius: var(--radius-sm);
      padding: 1rem 1.25rem;
      margin-bottom: 2rem;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
    }
    .filter-group {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.6rem;
    }
    .filter-label {
      font-size: 0.82rem;
      color: var(--text-dim);
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .filter-pill {
      font-size: 0.82rem;
      padding: 0.3rem 0.8rem;
      border-radius: 3px;
      background: rgba(15, 29, 56, 0.6);
      color: var(--text-subtitle);
      border: 1px solid rgba(255, 255, 255, 0.08);
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .filter-pill:hover, .filter-pill.active {
      background: rgba(0, 240, 255, 0.18);
      border-color: var(--neon-blue);
      color: #ffffff;
    }

    /* Grid Stream Card */
    .stream-card {
      background: var(--bg-card);
      border: 1px solid var(--border-hud);
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 1.5rem;
      display: flex;
      flex-direction: column;
      height: calc(100% - 1.5rem);
      transition: all 0.3s ease;
    }
    .stream-card:hover {
      border-color: var(--neon-blue);
      transform: translateY(-4px);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6), 0 0 18px rgba(0, 240, 255, 0.2);
    }
    .stream-thumb-wrap {
      position: relative;
      height: 180px;
      background: #0d182e;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      border-bottom: 1px solid rgba(0, 240, 255, 0.15);
    }
    .thumb-grid-bg {
      position: absolute;
      inset: 0;
      background-image: linear-gradient(rgba(0, 240, 255, 0.05) 1px, transparent 1px),
                        linear-gradient(90deg, rgba(0, 240, 255, 0.05) 1px, transparent 1px);
      background-size: 20px 20px;
    }
    .thumb-spec-center {
      position: relative;
      z-index: 2;
      text-align: center;
    }
    .thumb-codec-badge {
      font-size: 1.25rem;
      font-weight: 800;
      color: #ffffff;
      letter-spacing: 1px;
      text-shadow: 0 0 10px var(--neon-blue);
    }
    .stream-tag-topleft {
      position: absolute;
      top: 10px;
      left: 10px;
      z-index: 3;
    }
    .stream-tag-topright {
      position: absolute;
      top: 10px;
      right: 10px;
      z-index: 3;
    }
    .stream-body {
      padding: 1.25rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .stream-card-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 0.6rem;
      line-height: 1.4;
    }
    .stream-metrics-row {
      display: flex;
      justify-content: space-between;
      margin-top: auto;
      padding-top: 1rem;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 0.8rem;
      color: var(--text-dim);
    }

    /* Tuning Guides */
    .tuning-step-box {
      background: rgba(12, 20, 39, 0.75);
      border-left: 3px solid var(--neon-blue);
      padding: 1.25rem 1.5rem;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      margin-bottom: 1.25rem;
    }
    .tuning-code-snippet {
      background: #05080e;
      border: 1px solid rgba(0, 240, 255, 0.15);
      padding: 0.6rem 0.9rem;
      font-family: Consolas, Monaco, "Courier New", monospace;
      font-size: 0.82rem;
      color: var(--neon-green);
      border-radius: 3px;
      margin-top: 0.5rem;
      display: block;
      overflow-x: auto;
    }

    /* Micro Feedback Wall */
    .feedback-card {
      background: rgba(15, 29, 56, 0.5);
      border: 1px solid rgba(255, 255, 255, 0.07);
      border-radius: var(--radius-sm);
      padding: 1.15rem;
      margin-bottom: 1.25rem;
      position: relative;
    }
    .feedback-user-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 0.6rem;
    }

    /* FAQ Accordion */
    .hud-accordion-item {
      background: rgba(13, 24, 46, 0.65);
      border: 1px solid var(--border-hud);
      border-radius: var(--radius-sm);
      margin-bottom: 0.9rem;
      overflow: hidden;
    }
    .hud-accordion-trigger {
      width: 100%;
      text-align: left;
      padding: 1.15rem 1.4rem;
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      background: transparent;
      border: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      transition: background 0.2s ease;
    }
    .hud-accordion-trigger:hover {
      background: rgba(0, 240, 255, 0.05);
      color: var(--neon-blue);
    }
    .hud-accordion-content {
      padding: 0 1.4rem 1.25rem;
      color: var(--text-body);
      font-size: 0.9rem;
      line-height: 1.7;
    }

    /* Site Footer */
    .site-footer {
      background: #05080e;
      border-top: 1px solid rgba(0, 240, 255, 0.15);
      padding: 3.5rem 0 2rem;
      margin-top: 4rem;
    }
    .footer-brand-title {
      font-size: 1.3rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 0.9rem;
    }
    .footer-bottom-bar {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 1.5rem;
      margin-top: 2.5rem;
      font-size: 0.8rem;
      color: var(--text-dim);
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
    }

    @media (max-width: 768px) {
      .header-brand-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.8rem;
      }
      .header-status-metrics {
        width: 100%;
        justify-content: space-between;
      }
      .cat-badge-box {
        margin-top: 1.5rem;
      }
    }

/* roulang page: category1 */
:root {
    --bg-base: #070b14;
    --bg-surface: #0c1427;
    --bg-elevated: #0f1d38;
    --bg-card: rgba(13, 24, 46, 0.72);
    --border-hud: rgba(0, 240, 255, 0.22);
    --border-bright: rgba(0, 240, 255, 0.6);
    --neon-blue: #00f0ff;
    --neon-green: #00ffa3;
    --neon-purple: #7928ca;
    --neon-pink: #ff007f;
    --text-title: #ffffff;
    --text-subtitle: #d0d8e8;
    --text-body: #8b9bb4;
    --text-dim: #4a5b78;
    --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.45);
    --radius-md: 8px;
    --radius-sm: 4px;
  }

  * {
    box-sizing: border-box;
  }

  body {
    background-color: var(--bg-base);
    background-image: 
      radial-gradient(circle at 15% 15%, rgba(121, 40, 202, 0.14) 0%, transparent 42%),
      radial-gradient(circle at 85% 75%, rgba(0, 240, 255, 0.12) 0%, transparent 46%),
      linear-gradient(180deg, #070b14 0%, #0c1427 50%, #070b14 100%);
    color: var(--text-body);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    margin: 0;
    padding: 0;
  }

  a {
    color: var(--neon-blue);
    text-decoration: none;
    transition: all 0.25s ease;
  }
  a:hover, a:focus {
    color: #ffffff;
    text-shadow: 0 0 8px var(--neon-blue);
  }

  .site-container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 1.25rem;
  }

  /* HUD Glassmorphism Card */
  .hud-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-hud);
    border-radius: var(--radius-md);
    position: relative;
    padding: 1.75rem;
    margin-bottom: 1.75rem;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.3s ease;
  }
  .hud-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-bright);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5), 0 0 16px rgba(0, 240, 255, 0.25);
  }
  .hud-card::before, .hud-card::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    pointer-events: none;
  }
  .hud-card::before {
    top: 0;
    left: 0;
    border-top: 2px solid var(--neon-blue);
    border-left: 2px solid var(--neon-blue);
  }
  .hud-card::after {
    bottom: 0;
    right: 0;
    border-bottom: 2px solid var(--neon-green);
    border-right: 2px solid var(--neon-green);
  }

  /* Buttons & Badges */
  .btn-neon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    font-size: 0.92rem;
    font-weight: 700;
    color: #070b14;
    background: linear-gradient(135deg, var(--neon-blue) 0%, var(--neon-green) 100%);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    box-shadow: 0 0 14px rgba(0, 240, 255, 0.35);
    transition: all 0.25s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }
  .btn-neon:hover {
    transform: scale(1.02);
    box-shadow: 0 0 24px rgba(0, 240, 255, 0.65);
    color: #000000;
  }
  .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.7rem 1.6rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--neon-blue);
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid var(--neon-blue);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.25s ease;
  }
  .btn-outline:hover {
    background: rgba(0, 240, 255, 0.15);
    box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
    color: #ffffff;
  }
  .hud-badge {
    display: inline-block;
    padding: 0.22rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--neon-green);
    background: rgba(0, 255, 163, 0.12);
    border: 1px solid rgba(0, 255, 163, 0.35);
    border-radius: 2px;
    letter-spacing: 0.5px;
  }
  .hud-badge-blue {
    color: var(--neon-blue);
    background: rgba(0, 240, 255, 0.1);
    border-color: rgba(0, 240, 255, 0.3);
  }
  .hud-badge-purple {
    color: #d175ff;
    background: rgba(121, 40, 202, 0.18);
    border-color: rgba(121, 40, 202, 0.45);
  }

  /* Header & Dual Navigation */
  .site-header {
    background: rgba(7, 11, 20, 0.94);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 240, 255, 0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
  }
  .header-brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.9rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
  .brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.35rem;
    font-weight: 800;
    color: #ffffff;
  }
  .brand-logo-icon {
    width: 34px;
    height: 34px;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    clip-path: polygon(25% 0%, 100% 0%, 75% 100%, 0% 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #070b14;
    font-size: 1rem;
    font-weight: 900;
  }
  .header-status-metrics {
    display: flex;
    align-items: center;
    gap: 16px;
  }
  .node-pulse-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-subtitle);
  }
  .pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--neon-green);
    box-shadow: 0 0 10px var(--neon-green);
    animation: pulseGlow 2s infinite ease-in-out;
  }
  @keyframes pulseGlow {
    0%, 100% { opacity: 0.4; transform: scale(0.9); }
    50% { opacity: 1; transform: scale(1.2); box-shadow: 0 0 14px var(--neon-green); }
  }
  .channel-nav-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    overflow-x: auto;
    padding: 0.75rem 0;
    white-space: nowrap;
    -ms-overflow-style: none;
    scrollbar-width: none;
  }
  .channel-nav-row::-webkit-scrollbar {
    display: none;
  }
  .channel-link {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-subtitle);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    border-bottom: 2px solid transparent;
  }
  .channel-link:hover {
    color: #ffffff;
    background: rgba(0, 240, 255, 0.08);
  }
  .channel-link.active {
    color: var(--neon-blue);
    border-bottom-color: var(--neon-blue);
    background: rgba(0, 240, 255, 0.1);
  }

  /* Section Common */
  .cat-section {
    padding: 3.5rem 0;
    position: relative;
  }
  .cat-section-title-wrap {
    margin-bottom: 2rem;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    border-bottom: 1px solid rgba(0, 240, 255, 0.15);
    padding-bottom: 1rem;
  }
  .cat-section-title {
    font-size: 1.65rem;
    font-weight: 800;
    color: #ffffff;
    margin: 0 0 0.4rem 0;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .cat-section-title::before {
    content: "";
    display: inline-block;
    width: 4px;
    height: 1.4rem;
    background: var(--neon-blue);
    box-shadow: 0 0 8px var(--neon-blue);
  }
  .cat-section-sub {
    font-size: 0.92rem;
    color: var(--text-body);
    margin: 0;
  }

  /* 1. Category Hero Banner */
  .category-hero {
    padding: 3.5rem 0 2.5rem 0;
    border-bottom: 1px solid rgba(0, 240, 255, 0.12);
  }
  .cat-hero-card {
    background: linear-gradient(135deg, rgba(13, 24, 46, 0.9) 0%, rgba(15, 29, 56, 0.7) 100%);
    border: 1px solid var(--border-hud);
    border-radius: var(--radius-md);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
  }
  .cat-hero-card::after {
    content: "";
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 240, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
  }
  .cat-h1 {
    font-size: 2.25rem;
    font-weight: 900;
    color: #ffffff;
    line-height: 1.35;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
  }
  .hero-tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 1.25rem;
  }
  .cat-health-badge-box {
    background: rgba(7, 11, 20, 0.85);
    border: 1px solid var(--border-hud);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    text-align: center;
    position: relative;
  }
  .health-score-num {
    font-size: 3.2rem;
    font-weight: 900;
    line-height: 1;
    color: var(--neon-green);
    text-shadow: 0 0 15px rgba(0, 255, 163, 0.4);
    font-family: monospace, sans-serif;
  }
  .health-score-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-subtitle);
    margin-top: 0.5rem;
  }
  .health-metric-mini {
    display: flex;
    justify-content: space-around;
    margin-top: 1rem;
    padding-top: 0.85rem;
    border-top: 1px dashed rgba(255, 255, 255, 0.1);
  }
  .mini-item-val {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--neon-blue);
  }
  .mini-item-lbl {
    font-size: 0.72rem;
    color: var(--text-dim);
  }

  /* 2. Filter & Sort Toolbar */
  .filter-bar {
    background: rgba(13, 24, 46, 0.65);
    border: 1px solid var(--border-hud);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    align-items: center;
    justify-content: space-between;
  }
  .filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
  }
  .filter-label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-dim);
    margin-right: 0.35rem;
    text-transform: uppercase;
  }
  .filter-pill {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-subtitle);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0.28rem 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
  }
  .filter-pill:hover {
    color: #ffffff;
    border-color: var(--neon-blue);
    background: rgba(0, 240, 255, 0.08);
  }
  .filter-pill.active {
    color: #070b14;
    background: var(--neon-blue);
    border-color: var(--neon-blue);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
  }

  /* 3. Grid Stream Cards */
  .route-card {
    background: var(--bg-card);
    border: 1px solid var(--border-hud);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
  }
  .route-card:hover {
    transform: translateY(-5px);
    border-color: var(--neon-blue);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.6), 0 0 18px rgba(0, 240, 255, 0.3);
  }
  .route-card-preview {
    background: linear-gradient(135deg, #0f1d38 0%, #162a52 100%);
    border: 1px solid rgba(0, 240, 255, 0.15);
    border-radius: var(--radius-sm);
    padding: 1.25rem;
    margin-bottom: 1.2rem;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 140px;
  }
  .route-preview-glow {
    position: absolute;
    right: 10px;
    bottom: 10px;
    font-size: 2.2rem;
    font-weight: 900;
    font-family: monospace;
    color: rgba(0, 240, 255, 0.06);
    pointer-events: none;
  }
  .route-spec-chips {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 2;
  }
  .latency-metric-box {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-top: 1.5rem;
    position: relative;
    z-index: 2;
  }
  .latency-number {
    font-size: 2.1rem;
    font-weight: 800;
    font-family: monospace;
    color: #ffffff;
    line-height: 1;
  }
  .latency-unit {
    font-size: 0.85rem;
    color: var(--neon-green);
    font-weight: 700;
  }
  .route-card-title {
    font-size: 1.18rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.6rem;
  }
  .route-card-summary {
    font-size: 0.86rem;
    color: var(--text-body);
    line-height: 1.65;
    margin-bottom: 1.25rem;
  }
  .route-spec-bars {
    background: rgba(7, 11, 20, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    padding: 0.8rem;
    margin-bottom: 1.25rem;
  }
  .spec-bar-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    margin-bottom: 0.35rem;
    color: var(--text-subtitle);
  }
  .spec-bar-track {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 0.6rem;
  }
  .spec-bar-track:last-child {
    margin-bottom: 0;
  }
  .spec-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-green));
  }

  /* 4. Pagination / Load more */
  .pagination-wrap {
    text-align: center;
    padding: 2rem 0;
    margin-top: 1rem;
  }

  /* 5. Hardware Tuning Support Section */
  .tuning-box {
    background: rgba(13, 24, 46, 0.8);
    border: 1px solid var(--border-hud);
    border-radius: var(--radius-md);
    padding: 2rem;
  }
  .tuning-step-card {
    background: rgba(7, 11, 20, 0.6);
    border: 1px solid rgba(0, 240, 255, 0.12);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
    height: 100%;
    position: relative;
  }
  .tuning-step-num {
    font-family: monospace;
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--neon-blue);
    margin-bottom: 0.6rem;
  }
  .tuning-step-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.6rem;
  }
  .tuning-step-text {
    font-size: 0.86rem;
    color: var(--text-body);
    line-height: 1.7;
    margin: 0;
  }

  /* 6. Channel FAQ Accordion */
  .faq-card-item {
    background: var(--bg-card);
    border: 1px solid var(--border-hud);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: border-color 0.25s ease;
  }
  .faq-card-item:hover {
    border-color: var(--border-bright);
  }
  .faq-header {
    padding: 1.2rem 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
    background: rgba(15, 29, 56, 0.4);
  }
  .faq-q-title {
    font-size: 1.02rem;
    font-weight: 700;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .faq-icon-arrow {
    width: 18px;
    height: 18px;
    fill: var(--neon-blue);
    transition: transform 0.3s ease;
  }
  .faq-card-item.open .faq-icon-arrow {
    transform: rotate(90deg);
    fill: var(--neon-pink);
  }
  .faq-card-body {
    padding: 0 1.5rem 1.25rem 1.5rem;
    font-size: 0.88rem;
    color: var(--text-body);
    line-height: 1.75;
    display: none;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 1rem;
  }
  .faq-card-item.open .faq-card-body {
    display: block;
  }

  /* 7. Feedback Wall */
  .feedback-mini-card {
    background: rgba(13, 24, 46, 0.7);
    border: 1px solid var(--border-hud);
    border-radius: var(--radius-sm);
    padding: 1.25rem;
    height: 100%;
    position: relative;
  }
  .feedback-user-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
  }
  .feedback-user-info {
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .feedback-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: #070b14;
  }
  .feedback-meta {
    font-size: 0.78rem;
    color: var(--text-dim);
  }
  .feedback-stat-badge {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--neon-green);
    background: rgba(0, 255, 163, 0.08);
    padding: 2px 6px;
    border-radius: 2px;
    border: 1px solid rgba(0, 255, 163, 0.25);
  }
  .feedback-text {
    font-size: 0.84rem;
    color: var(--text-subtitle);
    line-height: 1.6;
    margin: 0;
  }

  /* Site Footer */
  .site-footer {
    background: #04070d;
    border-top: 1px solid rgba(0, 240, 255, 0.15);
    padding: 3.5rem 0 2rem 0;
    margin-top: 3rem;
  }
  .footer-brand-title {
    font-size: 1.2rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .footer-bottom-bar {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    font-size: 0.82rem;
    color: var(--text-dim);
  }

  @media screen and (max-width: 768px) {
    .cat-h1 { font-size: 1.7rem; }
    .cat-section-title { font-size: 1.35rem; }
    .filter-bar { flex-direction: column; align-items: flex-start; }
    .header-status-metrics { display: none; }
  }