/* roulang page: index */
:root {
      --primary-deep: #163F7C;
      --primary: #1B4F9C;
      --primary-light: #2E7BE6;
      --accent-gold: #E6A23C;
      --accent-green: #27C28C;
      --accent-orange: #FF7D00;
      --bg-main: #F4F7FC;
      --bg-card: #FFFFFF;
      --bg-alt: #EDF3FA;
      --text-main: #1D2A3A;
      --text-muted: #5E6D82;
      --border-color: rgba(46, 123, 230, 0.16);
      --border-light: rgba(220, 230, 245, 0.8);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 4px 12px rgba(27, 79, 156, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(27, 79, 156, 0.08);
      --shadow-hover: 0 16px 32px -6px rgba(27, 79, 156, 0.15);
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
    }
    a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-deep); }
    img { max-width: 100%; height: auto; display: block; }
    .site-header {
      background: linear-gradient(90deg, #123366 0%, var(--primary-deep) 50%, #225C9E 100%);
      color: #fff;
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 2px 14px rgba(18, 51, 102, 0.2);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .site-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-weight: 700;
      font-size: 20px;
      letter-spacing: -0.2px;
    }
    .brand-icon {
      width: 40px;
      height: 40px;
      background: rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      border: 1px solid rgba(255, 255, 255, 0.25);
    }
    .site-brand span { color: #fff; }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 8px;
      margin: 0;
    }
    .nav-menu li a {
      color: rgba(255, 255, 255, 0.9);
      padding: 8px 16px;
      font-size: 15px;
      font-weight: 500;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      display: inline-block;
    }
    .nav-menu li.active a,
    .nav-menu li a:hover {
      background: rgba(255, 255, 255, 0.16);
      color: #fff;
    }
    .nav-cta {
      background: #FF8F1F;
      color: #fff !important;
      font-weight: 600 !important;
      box-shadow: 0 4px 12px rgba(255, 143, 31, 0.35);
      border: 1px solid rgba(255, 255, 255, 0.3);
    }
    .nav-cta:hover {
      background: #E87A0C !important;
      transform: translateY(-1px);
    }
    .section-wrap {
      padding: 64px 0;
      position: relative;
    }
    .section-wrap.alt-bg {
      background-color: var(--bg-alt);
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }
    .sec-head {
      margin-bottom: 36px;
    }
    .badge-sub {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      background: rgba(46, 123, 230, 0.12);
      padding: 4px 12px;
      border-radius: 20px;
      text-transform: uppercase;
      margin-bottom: 10px;
      border: 1px solid rgba(46, 123, 230, 0.2);
    }
    .sec-title {
      font-size: 28px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.35;
    }
    .sec-desc {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 820px;
      margin: 0;
    }
    .hero-banner {
      position: relative;
      background: linear-gradient(135deg, rgba(14, 38, 77, 0.94) 0%, rgba(27, 79, 156, 0.88) 100%), url('/assets/images/ee2be90b181bc3c9.jpg') center center/cover no-repeat;
      color: #fff;
      padding: 70px 0 80px 0;
      border-bottom: 4px solid var(--accent-gold);
    }
    .hero-h1 {
      font-size: 38px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .hero-p {
      font-size: 16px;
      color: rgba(255, 255, 255, 0.9);
      margin-bottom: 28px;
      line-height: 1.7;
    }
    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 30px;
    }
    .hero-tag-item {
      background: rgba(255, 255, 255, 0.14);
      border: 1px solid rgba(255, 255, 255, 0.25);
      border-radius: var(--radius-sm);
      padding: 6px 14px;
      font-size: 13px;
      color: #fff;
    }
    .hero-btn-group {
      display: flex;
      gap: 16px;
      align-items: center;
      flex-wrap: wrap;
    }
    .btn-solid-glow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #FF8F1F;
      color: #fff;
      font-weight: 700;
      padding: 13px 28px;
      border-radius: var(--radius-sm);
      box-shadow: 0 6px 18px rgba(255, 143, 31, 0.4);
      border: none;
      cursor: pointer;
    }
    .btn-solid-glow:hover {
      background: #F08010;
      color: #fff;
      transform: translateY(-2px);
    }
    .btn-outline-glow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.1);
      color: #fff;
      font-weight: 600;
      padding: 12px 24px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.4);
    }
    .btn-outline-glow:hover {
      background: rgba(255, 255, 255, 0.2);
      color: #fff;
    }
    .hero-stat-card {
      background: rgba(255, 255, 255, 0.95);
      color: var(--text-main);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-hover);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .board-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-light);
      padding-bottom: 12px;
      margin-bottom: 16px;
    }
    .board-title {
      font-weight: 700;
      font-size: 15px;
      color: var(--primary-deep);
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .live-dot {
      width: 8px;
      height: 8px;
      background: var(--accent-green);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent-green);
      animation: blink 1.6s infinite;
    }
    @keyframes blink {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.9); }
    }
    .stat-row {
      display: flex;
      justify-content: space-between;
      margin-bottom: 14px;
      font-size: 14px;
    }
    .stat-label { color: var(--text-muted); }
    .stat-val { font-weight: 700; color: var(--text-main); font-family: monospace; }
    .stat-val.highlight { color: var(--primary-light); font-weight: 800; font-size: 16px; }
    .stat-progress-bar {
      height: 6px;
      background: #E8EDF5;
      border-radius: 3px;
      overflow: hidden;
      margin-top: 4px;
    }
    .progress-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--primary-light), var(--accent-green));
    }
    .card-board {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .card-board:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary-light);
    }
    .card-head-badge {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 14px;
    }
    .badge-level {
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      background: var(--bg-alt);
      color: var(--primary);
      border: 1px solid var(--border-color);
    }
    .badge-status {
      font-size: 12px;
      font-weight: 600;
      color: var(--accent-green);
      display: flex;
      align-items: center;
      gap: 5px;
    }
    .card-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .card-text {
      color: var(--text-muted);
      font-size: 14px;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .card-prop-slot {
      border-top: 1px dashed var(--border-light);
      padding-top: 12px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .prop-item {
      display: flex;
      justify-content: space-between;
      margin-bottom: 6px;
    }
    .prop-val {
      font-weight: 600;
      color: var(--text-main);
    }
    .media-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .media-thumb-box {
      position: relative;
      height: 180px;
      overflow: hidden;
      background: #1B293E;
    }
    .media-thumb-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .media-card:hover .media-thumb-box img {
      transform: scale(1.05);
    }
    .thumb-tag {
      position: absolute;
      top: 10px;
      left: 10px;
      background: rgba(22, 63, 124, 0.85);
      color: #fff;
      font-size: 11px;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      backdrop-filter: blur(4px);
      font-weight: 600;
    }
    .thumb-rate {
      position: absolute;
      bottom: 10px;
      right: 10px;
      background: rgba(0, 0, 0, 0.7);
      color: var(--accent-gold);
      font-size: 11px;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-weight: 700;
    }
    .media-body {
      padding: 18px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .media-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .media-desc {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 12px;
      line-height: 1.6;
      flex-grow: 1;
    }
    .media-meta-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      font-size: 11px;
      color: var(--primary);
    }
    .media-meta-tag {
      background: var(--bg-alt);
      padding: 2px 8px;
      border-radius: 4px;
      border: 1px solid var(--border-color);
    }
    .compare-table-wrap {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      margin: 0;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-light);
    }
    .compare-table th {
      background: #1B3968;
      color: #fff;
      font-weight: 600;
      font-size: 15px;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table tr:hover td {
      background-color: #F8FBFF;
    }
    .tag-win {
      background: rgba(39, 194, 140, 0.15);
      color: #0E8056;
      font-size: 12px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .tag-old {
      color: var(--text-muted);
      font-size: 13px;
    }
    .timeline-wrap {
      position: relative;
      padding-left: 24px;
      border-left: 2px solid #D0DEF0;
      margin-left: 12px;
    }
    .timeline-node {
      position: relative;
      margin-bottom: 30px;
    }
    .timeline-node:last-child {
      margin-bottom: 0;
    }
    .timeline-dot {
      position: absolute;
      left: -33px;
      top: 4px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: #fff;
      border: 4px solid var(--primary-light);
      box-shadow: 0 0 0 2px rgba(46, 123, 230, 0.2);
    }
    .timeline-head {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary-deep);
      margin-bottom: 4px;
    }
    .timeline-text {
      color: var(--text-muted);
      font-size: 14px;
    }
    .step-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      height: 100%;
      position: relative;
    }
    .step-index {
      font-size: 28px;
      font-weight: 900;
      color: rgba(27, 79, 156, 0.12);
      line-height: 1;
      margin-bottom: 8px;
      font-family: monospace;
    }
    .step-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 14px;
      color: var(--text-muted);
    }
    .accordion-box {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--bg-card);
      box-shadow: var(--shadow-sm);
    }
    .accordion-item {
      border-bottom: 1px solid var(--border-light);
    }
    .accordion-item:last-child {
      border-bottom: none;
    }
    .accordion-trigger {
      width: 100%;
      text-align: left;
      padding: 20px 24px;
      background: transparent;
      border: none;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      transition: var(--transition);
    }
    .accordion-trigger:hover {
      background: #F8FAFD;
      color: var(--primary);
    }
    .accordion-trigger i {
      color: var(--primary-light);
      transition: transform 0.25s ease;
    }
    .accordion-body {
      padding: 0 24px 20px 24px;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
    }
    .form-panel {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
      display: block;
    }
    .form-control {
      width: 100%;
      padding: 10px 14px;
      font-size: 14px;
      border: 1px solid #CFDAEA;
      border-radius: var(--radius-sm);
      background: #FCFDFF;
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--primary-light);
      box-shadow: 0 0 0 3px rgba(46, 123, 230, 0.15);
    }
    .btn-submit {
      width: 100%;
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      padding: 12px;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      font-size: 15px;
      transition: var(--transition);
    }
    .btn-submit:hover {
      background: var(--primary-deep);
      box-shadow: 0 6px 16px rgba(22, 63, 124, 0.3);
    }
    .speed-test-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .speed-meter-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
      gap: 16px;
      margin-top: 16px;
    }
    .speed-item {
      background: var(--bg-alt);
      padding: 16px;
      border-radius: var(--radius-sm);
      text-align: center;
      border: 1px solid var(--border-color);
    }
    .speed-val {
      font-size: 22px;
      font-weight: 800;
      color: var(--primary-deep);
      font-family: monospace;
      margin: 4px 0;
    }
    .speed-node-name {
      font-size: 12px;
      color: var(--text-muted);
    }
    .partner-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
      gap: 16px;
      align-items: center;
    }
    .partner-item {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      padding: 18px 12px;
      border-radius: var(--radius-sm);
      text-align: center;
      font-size: 13px;
      font-weight: 600;
      color: #55667D;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      transition: var(--transition);
    }
    .partner-item:hover {
      border-color: var(--primary-light);
      color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .site-footer {
      background: #112644;
      color: #A9B8CE;
      padding: 50px 0 24px 0;
      border-top: 3px solid var(--primary-light);
      font-size: 14px;
    }
    .footer-brand {
      color: #FFFFFF;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-desc {
      font-size: 13px;
      line-height: 1.8;
      margin-bottom: 16px;
      color: #8C9FB9;
    }
    .footer-links-title {
      color: #FFFFFF;
      font-weight: 700;
      font-size: 15px;
      margin-bottom: 14px;
    }
    .footer-link-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-link-list li {
      margin-bottom: 8px;
    }
    .footer-link-list a {
      color: #A9B8CE;
      font-size: 13px;
    }
    .footer-link-list a:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 20px;
      margin-top: 36px;
      font-size: 12px;
      color: #6C819F;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 10px;
    }
    @media (max-width: 1024px) {
      .hero-h1 { font-size: 32px; }
      .sec-title { font-size: 24px; }
    }
    @media (max-width: 768px) {
      .hero-banner { padding: 46px 0; }
      .hero-h1 { font-size: 26px; }
      .hero-stat-card { margin-top: 24px; }
      .section-wrap { padding: 46px 0; }
      .nav-menu li a { padding: 6px 10px; font-size: 13px; }
      .compare-table th, .compare-table td { padding: 10px 12px; font-size: 13px; }
      .partner-grid { grid-template-columns: repeat(2, 1fr); }
    }

/* roulang page: category1 */
:root {
      --primary-deep: #163F7C;
      --primary: #1B4F9C;
      --primary-light: #2E7BE6;
      --accent-gold: #E6A23C;
      --accent-green: #27C28C;
      --accent-orange: #FF7D00;
      --bg-main: #F4F7FC;
      --bg-card: #FFFFFF;
      --bg-alt: #EDF3FA;
      --text-main: #1D2A3A;
      --text-muted: #5E6D82;
      --border-color: rgba(46, 123, 230, 0.16);
      --border-light: rgba(220, 230, 245, 0.8);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 4px 12px rgba(27, 79, 156, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(27, 79, 156, 0.08);
      --shadow-hover: 0 16px 32px -6px rgba(27, 79, 156, 0.15);
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    * { box-sizing: border-box; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      font-size: 15px;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }
    a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary-deep); }
    img { max-width: 100%; height: auto; display: block; }

    /* Header Nav */
    .site-header {
      background: linear-gradient(90deg, #123366 0%, var(--primary-deep) 50%, #225C9E 100%);
      color: #fff;
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 2px 14px rgba(18, 51, 102, 0.2);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .site-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
      font-weight: 700;
      font-size: 20px;
      letter-spacing: -0.2px;
    }
    .brand-icon {
      width: 40px;
      height: 40px;
      background: rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      border: 1px solid rgba(255, 255, 255, 0.25);
    }
    .site-brand span { color: #fff; }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 8px;
      margin: 0;
    }
    .nav-menu li a {
      color: rgba(255, 255, 255, 0.9);
      padding: 8px 16px;
      font-size: 15px;
      font-weight: 500;
      border-radius: var(--radius-sm);
      transition: var(--transition);
      display: inline-block;
    }
    .nav-menu li.active a,
    .nav-menu li a:hover {
      background: rgba(255, 255, 255, 0.16);
      color: #fff;
    }
    .nav-cta {
      background: #FF8F1F;
      color: #fff !important;
      font-weight: 600 !important;
      box-shadow: 0 4px 12px rgba(255, 143, 31, 0.35);
      border: 1px solid rgba(255, 255, 255, 0.3);
    }
    .nav-cta:hover {
      background: #E87A0C !important;
      transform: translateY(-1px);
    }

    /* Common Components */
    .section-wrap {
      padding: 56px 0;
      position: relative;
    }
    .section-wrap.alt-bg {
      background-color: var(--bg-alt);
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }
    .badge-sub {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      background: rgba(46, 123, 230, 0.12);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 10px;
      border: 1px solid rgba(46, 123, 230, 0.2);
    }
    .sec-title {
      font-size: 26px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.35;
    }
    .sec-lead {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 820px;
      margin-bottom: 32px;
      line-height: 1.7;
    }

    /* Block 1: Banner Header */
    .cat-banner {
      background: linear-gradient(135deg, rgba(22, 63, 124, 0.96) 0%, rgba(43, 108, 176, 0.9) 100%), url('/assets/images/f90338318ffedcc2.webp') center/cover no-repeat;
      color: #fff;
      padding: 46px 0 40px;
      border-bottom: 3px solid var(--accent-gold);
    }
    .breadcrumbs-bar {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.7);
      margin-bottom: 18px;
    }
    .breadcrumbs-bar a { color: #fff; }
    .breadcrumbs-bar a:hover { text-decoration: underline; }
    .cat-h1 {
      font-size: 32px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 12px;
      letter-spacing: -0.3px;
    }
    .cat-desc {
      font-size: 15px;
      color: rgba(255, 255, 255, 0.88);
      max-width: 800px;
      line-height: 1.65;
      margin-bottom: 0;
    }
    .cat-metrics-box {
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.25);
      border-radius: var(--radius-md);
      padding: 18px 24px;
      display: flex;
      justify-content: space-around;
      align-items: center;
      backdrop-filter: blur(8px);
    }
    .metric-col {
      text-align: center;
    }
    .metric-val {
      font-size: 26px;
      font-weight: 800;
      color: #FFE082;
      line-height: 1.2;
    }
    .metric-lbl {
      font-size: 12px;
      color: rgba(255, 255, 255, 0.85);
      margin-top: 4px;
    }

    /* Block 2: Filter Matrix */
    .filter-panel {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 24px;
      margin-top: -24px;
      position: relative;
      z-index: 10;
      box-shadow: var(--shadow-md);
    }
    .filter-row {
      display: flex;
      align-items: center;
      padding: 8px 0;
      border-bottom: 1px dashed var(--border-light);
    }
    .filter-row:last-child { border-bottom: none; }
    .filter-title {
      width: 100px;
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-deep);
      flex-shrink: 0;
    }
    .filter-options {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .filter-tag {
      font-size: 12px;
      padding: 4px 12px;
      border-radius: 20px;
      background: #F1F4FA;
      color: var(--text-muted);
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
    }
    .filter-tag:hover,
    .filter-tag.active {
      background: rgba(46, 123, 230, 0.12);
      color: var(--primary);
      border-color: var(--primary-light);
      font-weight: 600;
    }

    /* Block 3: Cards Grid */
    .media-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      height: 100%;
      margin-bottom: 24px;
    }
    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary-light);
    }
    .media-cover-box {
      position: relative;
      width: 100%;
      padding-top: 56.25%; /* 16:9 */
      background: #0d1e38;
      overflow: hidden;
    }
    .media-cover-box img {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .media-card:hover .media-cover-box img {
      transform: scale(1.05);
    }
    .code-badge {
      position: absolute;
      top: 10px;
      left: 10px;
      background: rgba(18, 51, 102, 0.85);
      backdrop-filter: blur(4px);
      color: #fff;
      font-size: 11px;
      font-family: monospace;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .quality-badge {
      position: absolute;
      top: 10px;
      right: 10px;
      background: linear-gradient(135deg, var(--accent-gold), #FFB74D);
      color: #123366;
      font-weight: 800;
      font-size: 11px;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      box-shadow: 0 2px 6px rgba(0,0,0,0.2);
    }
    .media-body {
      padding: 16px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .media-card-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .media-meta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 6px 12px;
      background: #F7F9FD;
      padding: 10px 12px;
      border-radius: var(--radius-sm);
      font-size: 12px;
      margin-bottom: 12px;
      border: 1px solid var(--border-light);
    }
    .meta-item {
      color: var(--text-muted);
      display: flex;
      justify-content: space-between;
    }
    .meta-item strong {
      color: var(--text-main);
    }
    .prop-bar-wrap {
      margin-top: auto;
      padding-top: 6px;
    }
    .prop-bar-label {
      display: flex;
      justify-content: space-between;
      font-size: 11px;
      color: var(--text-muted);
      margin-bottom: 4px;
    }
    .prop-bar {
      height: 6px;
      background: #E2E8F0;
      border-radius: 3px;
      overflow: hidden;
    }
    .prop-bar-inner {
      height: 100%;
      background: linear-gradient(90deg, var(--primary-light), var(--accent-green));
      border-radius: 3px;
    }
    .pagination-bar {
      display: flex;
      justify-content: center;
      gap: 6px;
      margin-top: 24px;
      list-style: none;
      padding: 0;
    }
    .pagination-bar a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 36px;
      height: 36px;
      padding: 0 10px;
      background: #fff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      color: var(--text-main);
      font-size: 13px;
      font-weight: 600;
    }
    .pagination-bar a:hover,
    .pagination-bar .current a {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }

    /* Block 4: Decoding & Bitrate */
    .codec-spec-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      height: 100%;
    }
    .codec-icon-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .codec-icon {
      width: 44px;
      height: 44px;
      background: rgba(46, 123, 230, 0.1);
      color: var(--primary);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
    }
    .codec-spec-card h4 {
      margin: 0;
      font-size: 18px;
      font-weight: 700;
      color: var(--primary-deep);
    }
    .spec-table {
      width: 100%;
      margin: 16px 0 0 0;
      border-collapse: collapse;
      font-size: 13px;
    }
    .spec-table th, .spec-table td {
      padding: 8px 10px;
      text-align: left;
      border-bottom: 1px solid var(--border-light);
    }
    .spec-table th {
      background: #F8FAFD;
      color: var(--text-muted);
      font-weight: 600;
    }
    .spec-table td {
      color: var(--text-main);
    }

    /* Block 5: GEO Network Routing */
    .geo-guide-card {
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      border-left: 4px solid var(--primary-light);
      height: 100%;
    }
    .geo-guide-card:hover {
      box-shadow: var(--shadow-hover);
    }
    .geo-card-badge {
      display: inline-block;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 11px;
      font-weight: 700;
      margin-bottom: 12px;
      background: rgba(39, 194, 140, 0.15);
      color: #1a8a63;
    }
    .geo-guide-card h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--primary-deep);
      margin-bottom: 10px;
    }
    .geo-guide-card p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 12px;
      line-height: 1.6;
    }
    .geo-guide-card ul {
      margin: 0;
      padding-left: 18px;
      font-size: 13px;
      color: var(--text-main);
    }
    .geo-guide-card ul li { margin-bottom: 6px; }

    /* Block 6: FAQ Cards */
    .faq-fix-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      margin-bottom: 16px;
      box-shadow: var(--shadow-sm);
    }
    .faq-q {
      font-size: 15px;
      font-weight: 700;
      color: var(--primary-deep);
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 8px;
    }
    .faq-q i {
      color: var(--accent-orange);
    }
    .faq-a {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.65;
      padding-left: 24px;
      margin: 0;
    }

    /* Block 7: Protocol Tags & Cloud */
    .tag-cloud-panel {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
    }
    .cloud-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 16px;
      background: #F1F5FB;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      color: var(--text-main);
      font-size: 13px;
      font-weight: 500;
    }
    .cloud-item:hover {
      background: #E4ECF8;
      border-color: var(--primary-light);
      color: var(--primary);
    }
    .cloud-item i { color: var(--primary-light); }

    /* Footer */
    .site-footer {
      background: #0E1B2D;
      color: #C3D0E0;
      padding: 60px 0 24px;
      font-size: 14px;
      border-top: 4px solid var(--primary-light);
    }
    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-weight: 700;
      font-size: 18px;
      margin-bottom: 16px;
    }
    .footer-desc {
      font-size: 13.5px;
      line-height: 1.7;
      color: #8C9FB9;
      margin-bottom: 20px;
    }
    .footer-links-title {
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
      border-left: 3px solid var(--primary-light);
      padding-left: 10px;
    }
    .footer-link-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-link-list li {
      margin-bottom: 10px;
    }
    .footer-link-list a {
      color: #8C9FB9;
      font-size: 13.5px;
    }
    .footer-link-list a:hover {
      color: #fff;
      padding-left: 4px;
    }
    .footer-bottom {
      margin-top: 40px;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 12px;
      color: #64748B;
    }

    /* Responsive */
    @media (max-width: 768px) {
      .nav-inner { height: auto; padding: 14px 0; flex-direction: column; gap: 12px; }
      .cat-h1 { font-size: 24px; }
      .cat-metrics-box { margin-top: 20px; }
      .filter-title { width: 100%; margin-bottom: 6px; }
      .filter-row { flex-direction: column; align-items: flex-start; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }