/* roulang page: index */
:root {
      --bg-dark: #0b0c10;
      --bg-surface: #13111c;
      --bg-elevated: #1a162b;
      --bg-card: rgba(22, 20, 32, 0.78);
      --gold-primary: #e5a93c;
      --gold-light: #ffc857;
      --gold-glow: rgba(229, 169, 60, 0.28);
      --purple-accent: #9d4edd;
      --crimson-accent: #d81159;
      --text-main: #f4f4f6;
      --text-muted: #b0b3c1;
      --text-dim: #64687a;
      --border-color: rgba(229, 169, 60, 0.22);
      --border-purple: rgba(157, 78, 221, 0.25);
      --radius-sm: 4px;
      --radius-md: 6px;
      --shadow-base: 0 12px 32px rgba(0, 0, 0, 0.65), 0 0 1px rgba(229, 169, 60, 0.35);
      --transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-dark);
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(157, 78, 221, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(229, 169, 60, 0.06) 0%, transparent 40%),
        linear-gradient(180deg, #0b0c10 0%, #110e1a 50%, #0b0c10 100%);
      background-attachment: fixed;
      color: var(--text-main);
      font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", -apple-system, sans-serif;
      font-size: 15px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: var(--gold-light);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover, a:focus {
      color: #fff;
      text-shadow: 0 0 8px rgba(255, 200, 87, 0.6);
    }
    h1, h2, h3, h4, h5, h6 {
      color: var(--text-main);
      font-weight: 700;
      letter-spacing: 0.5px;
    }
    /* Site Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 12, 16, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.7);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 19px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: 1px;
    }
    .brand-rune-icon {
      width: 32px;
      height: 32px;
      border: 1px solid var(--gold-primary);
      transform: rotate(45deg);
      display: flex;
      align-items: center;
      justify-content: center;
      background: radial-gradient(circle, rgba(229, 169, 60, 0.3) 0%, rgba(19, 17, 28, 0.8) 100%);
      box-shadow: 0 0 10px var(--gold-glow);
    }
    .brand-rune-icon::after {
      content: "✦";
      transform: rotate(-45deg);
      color: var(--gold-light);
      font-size: 14px;
    }
    .brand-logo:hover .brand-rune-icon {
      box-shadow: 0 0 16px var(--gold-primary);
      transform: rotate(225deg);
      transition: var(--transition);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
      margin: 0;
    }
    .nav-links a {
      color: var(--text-muted);
      font-size: 15px;
      font-weight: 500;
      position: relative;
      padding: 6px 0;
    }
    .nav-links a::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 50%;
      width: 0;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
      transition: var(--transition);
      transform: translateX(-50%);
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--gold-light);
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn-gold {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: linear-gradient(135deg, var(--gold-primary) 0%, #c48b28 100%);
      color: #0b0c10 !important;
      font-weight: 700;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--gold-light);
      box-shadow: 0 4px 14px rgba(229, 169, 60, 0.35);
      cursor: pointer;
      transition: var(--transition);
      text-shadow: none;
    }
    .btn-gold:hover {
      background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold-primary) 100%);
      box-shadow: 0 6px 20px rgba(229, 169, 60, 0.6);
      transform: translateY(-2px);
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(22, 20, 32, 0.6);
      color: var(--text-main) !important;
      font-weight: 600;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      backdrop-filter: blur(8px);
      transition: var(--transition);
    }
    .btn-outline:hover {
      border-color: var(--gold-primary);
      background: rgba(229, 169, 60, 0.12);
      transform: translateY(-2px);
    }
    /* Common Section Styles */
    section {
      padding: 80px 0;
      position: relative;
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-subtitle {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 3px;
      text-transform: uppercase;
      color: var(--gold-primary);
      margin-bottom: 10px;
    }
    .section-title {
      font-size: 30px;
      line-height: 1.35;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 760px;
      line-height: 1.8;
    }
    .glass-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      box-shadow: var(--shadow-base);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .glass-card:hover {
      border-color: rgba(229, 169, 60, 0.55);
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.75), 0 0 16px rgba(229, 169, 60, 0.25);
      transform: translateY(-4px);
    }
    .glass-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255, 200, 87, 0.4), transparent);
    }
    /* Section 1: Hero */
    .hero-section {
      padding: 95px 0 80px;
      background: radial-gradient(circle at 50% 10%, rgba(26, 22, 43, 0.8) 0%, transparent 70%);
      border-bottom: 1px solid rgba(229, 169, 60, 0.12);
    }
    .hero-h1 {
      font-size: 42px;
      line-height: 1.25;
      margin-bottom: 22px;
      color: #fff;
      text-shadow: 0 2px 14px rgba(0, 0, 0, 0.8);
    }
    .hero-h1 span {
      background: linear-gradient(135deg, #ffffff 20%, var(--gold-light) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-intro {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.85;
      margin-bottom: 32px;
    }
    .hero-dashboard {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    .stat-box {
      background: rgba(19, 17, 28, 0.85);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 20px;
      text-align: center;
      position: relative;
    }
    .stat-value {
      font-size: 34px;
      font-weight: 800;
      color: var(--gold-light);
      font-family: "Cinzel", Georgia, serif;
      line-height: 1;
      margin-bottom: 6px;
    }
    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }
    /* Section 2: Categories */
    .category-card {
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .cat-tag {
      display: inline-block;
      font-size: 11px;
      padding: 3px 10px;
      border-radius: 2px;
      background: rgba(157, 78, 221, 0.2);
      border: 1px solid var(--border-purple);
      color: #d19eff;
      margin-bottom: 14px;
    }
    /* Section 3: Performance Comparison */
    .compare-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--bg-card);
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid rgba(229, 169, 60, 0.1);
    }
    .compare-table th {
      background: rgba(26, 22, 43, 0.8);
      color: var(--gold-light);
      font-size: 14px;
      font-weight: 700;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-highlight {
      color: var(--gold-light);
      font-weight: 600;
    }
    /* Section 4: Timeline Milestones */
    .timeline-wrap {
      position: relative;
      padding-left: 28px;
    }
    .timeline-wrap::before {
      content: "";
      position: absolute;
      left: 8px;
      top: 10px;
      bottom: 10px;
      width: 2px;
      background: linear-gradient(180deg, var(--gold-primary), var(--purple-accent), transparent);
    }
    .timeline-node {
      position: relative;
      margin-bottom: 32px;
    }
    .timeline-node::after {
      content: "";
      position: absolute;
      left: -24px;
      top: 6px;
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--gold-light);
      box-shadow: 0 0 10px var(--gold-primary);
    }
    /* Section 5: CMS Articles */
    .post-card {
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .post-thumb {
      height: 170px;
      background: linear-gradient(135deg, #1f1b30 0%, #100e18 100%);
      border: 1px solid rgba(229, 169, 60, 0.15);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      position: relative;
      overflow: hidden;
    }
    .post-thumb::before {
      content: "4K CINEMATIC";
      font-size: 11px;
      letter-spacing: 2px;
      color: rgba(255, 200, 87, 0.4);
      font-weight: 700;
    }
    .post-title {
      font-size: 17px;
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .post-excerpt {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .post-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: var(--text-dim);
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 12px;
    }
    /* Section 8: Terminal CDN Node Monitor */
    .terminal-board {
      background: #07070a;
      border: 1px solid rgba(157, 78, 221, 0.35);
      border-radius: var(--radius-sm);
      padding: 24px;
      font-family: "Courier New", Courier, monospace;
      color: #98ff98;
      box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.8);
    }
    .terminal-row {
      display: flex;
      justify-content: space-between;
      border-bottom: 1px dashed rgba(152, 255, 152, 0.15);
      padding: 8px 0;
      font-size: 13px;
    }
    .terminal-status-ok {
      color: var(--gold-light);
    }
    /* Section 10: FAQ Accordion */
    .faq-item {
      border: 1px solid var(--border-color);
      background: var(--bg-card);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 22px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--text-main);
      background: rgba(22, 20, 32, 0.5);
    }
    .faq-question:hover {
      color: var(--gold-light);
    }
    .faq-answer {
      padding: 18px 22px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      border-top: 1px solid rgba(229, 169, 60, 0.1);
      background: rgba(11, 12, 16, 0.4);
    }
    /* Section 13: Conversion Box */
    .cta-banner {
      background: radial-gradient(circle at 50% 50%, rgba(35, 27, 54, 0.9) 0%, rgba(11, 12, 16, 0.95) 100%);
      border: 1px solid var(--gold-primary);
      border-radius: var(--radius-md);
      padding: 50px 36px;
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.8), 0 0 24px rgba(229, 169, 60, 0.25);
      text-align: center;
    }
    .cta-input-group {
      max-width: 520px;
      margin: 28px auto 0;
      display: flex;
      gap: 10px;
    }
    .cta-input {
      flex: 1;
      height: 46px;
      background: #000;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 0 16px;
      color: #fff;
      font-size: 14px;
    }
    .cta-input:focus {
      outline: none;
      border-color: var(--gold-light);
      box-shadow: 0 0 12px var(--gold-glow);
    }
    /* Footer */
    .site-footer {
      background: #060608;
      border-top: 1px solid rgba(229, 169, 60, 0.15);
      padding: 65px 0 35px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-col-title {
      font-size: 15px;
      color: var(--text-main);
      font-weight: 700;
      margin-bottom: 20px;
      position: relative;
      padding-bottom: 8px;
    }
    .footer-col-title::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 24px;
      height: 2px;
      background: var(--gold-primary);
    }
    .footer-links {
      list-style: none;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: var(--text-muted);
    }
    .footer-links a:hover {
      color: var(--gold-light);
    }
    .copyright-bar {
      margin-top: 50px;
      padding-top: 25px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
      color: var(--text-dim);
    }
    /* Mobile drawer */
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      color: var(--gold-light);
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      font-size: 18px;
      cursor: pointer;
    }
    @media (max-width: 840px) {
      .nav-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-h1 {
        font-size: 32px;
      }
      .cta-input-group {
        flex-direction: column;
      }
      .hero-dashboard {
        margin-top: 36px;
      }
    }

/* roulang page: article */
:root {
      --bg-dark: #0b0c10;
      --bg-surface: #13111c;
      --bg-elevated: #1a162b;
      --bg-card: rgba(22, 20, 32, 0.78);
      --gold-primary: #e5a93c;
      --gold-light: #ffc857;
      --gold-glow: rgba(229, 169, 60, 0.28);
      --purple-accent: #9d4edd;
      --crimson-accent: #d81159;
      --text-main: #f4f4f6;
      --text-muted: #b0b3c1;
      --text-dim: #64687a;
      --border-color: rgba(229, 169, 60, 0.22);
      --border-purple: rgba(157, 78, 221, 0.25);
      --radius-sm: 4px;
      --radius-md: 6px;
      --shadow-base: 0 12px 32px rgba(0, 0, 0, 0.65), 0 0 1px rgba(229, 169, 60, 0.35);
      --transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    }

    * {
      box-sizing: border-box;
    }

    body {
      background-color: var(--bg-dark);
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(157, 78, 221, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(229, 169, 60, 0.06) 0%, transparent 40%),
        linear-gradient(180deg, #0b0c10 0%, #110e1a 50%, #0b0c10 100%);
      background-attachment: fixed;
      color: var(--text-main);
      font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", -apple-system, sans-serif;
      font-size: 15px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      margin: 0;
      padding: 0;
    }

    a {
      color: var(--gold-light);
      text-decoration: none;
      transition: var(--transition);
    }

    a:hover, a:focus {
      color: #fff;
      text-shadow: 0 0 8px rgba(255, 200, 87, 0.6);
    }

    /* Reading Progress Bar */
    .reading-progress-track {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: rgba(22, 20, 32, 0.4);
      z-index: 1100;
    }

    .reading-progress-bar {
      height: 100%;
      width: 0;
      background: linear-gradient(90deg, var(--purple-accent), var(--gold-primary), var(--gold-light));
      box-shadow: 0 0 8px var(--gold-glow);
      transition: width 0.1s ease-out;
    }

    /* Site Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 12, 16, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.7);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 19px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: 1px;
    }

    .brand-rune-icon {
      width: 32px;
      height: 32px;
      border: 1px solid var(--gold-primary);
      transform: rotate(45deg);
      display: flex;
      align-items: center;
      justify-content: center;
      background: radial-gradient(circle, rgba(229, 169, 60, 0.3) 0%, rgba(19, 17, 28, 0.8) 100%);
      box-shadow: 0 0 10px var(--gold-glow);
      flex-shrink: 0;
    }

    .brand-rune-icon::after {
      content: "✦";
      transform: rotate(-45deg);
      color: var(--gold-light);
      font-size: 14px;
    }

    .brand-logo:hover .brand-rune-icon {
      box-shadow: 0 0 16px var(--gold-primary);
      transform: rotate(225deg);
      transition: var(--transition);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .nav-links a {
      color: var(--text-muted);
      font-size: 15px;
      font-weight: 500;
      position: relative;
      padding: 6px 0;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 50%;
      width: 0;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
      transition: var(--transition);
      transform: translateX(-50%);
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--gold-light);
    }

    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .btn-gold {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: linear-gradient(135deg, var(--gold-primary) 0%, #c48b28 100%);
      color: #0b0c10 !important;
      font-weight: 700;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--gold-light);
      box-shadow: 0 4px 14px rgba(229, 169, 60, 0.35);
      cursor: pointer;
      transition: var(--transition);
      text-shadow: none;
    }

    .btn-gold:hover {
      background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold-primary) 100%);
      box-shadow: 0 6px 20px rgba(229, 169, 60, 0.6);
      transform: translateY(-2px);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(22, 20, 32, 0.6);
      color: var(--text-main) !important;
      font-weight: 600;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      backdrop-filter: blur(8px);
      transition: var(--transition);
    }

    .btn-outline:hover {
      border-color: var(--gold-primary);
      background: rgba(229, 169, 60, 0.12);
      transform: translateY(-2px);
    }

    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: 1px solid var(--border-color);
      color: var(--gold-light);
      font-size: 20px;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
    }

    /* Common Card Styles */
    .glass-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      box-shadow: var(--shadow-base);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .glass-card:hover {
      border-color: rgba(229, 169, 60, 0.55);
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.75), 0 0 16px rgba(229, 169, 60, 0.25);
      transform: translateY(-3px);
    }

    .glass-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(229, 169, 60, 0.4), transparent);
    }

    /* Article Specific Layout */
    .article-wrap {
      padding: 40px 0 80px 0;
    }

    /* 1. Breadcrumbs */
    .breadcrumb-nav {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 28px;
      font-size: 13px;
      color: var(--text-dim);
    }

    .breadcrumb-nav a {
      color: var(--text-muted);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .breadcrumb-nav a:hover {
      color: var(--gold-light);
    }

    .breadcrumb-sep {
      color: var(--gold-primary);
      font-size: 10px;
      opacity: 0.7;
    }

    .breadcrumb-current {
      color: var(--text-muted);
      max-width: 320px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    /* 2. Article Header & Meta */
    .article-header {
      margin-bottom: 36px;
      padding-bottom: 24px;
      border-bottom: 1px solid rgba(229, 169, 60, 0.15);
    }

    .article-tag-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(157, 78, 221, 0.15);
      border: 1px solid var(--border-purple);
      color: #d19eff;
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 1px;
      margin-bottom: 18px;
    }

    .article-h1 {
      font-size: 34px;
      line-height: 1.35;
      font-weight: 800;
      color: #fff;
      margin: 0 0 20px 0;
      letter-spacing: 0.5px;
    }

    .article-meta-row {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      font-size: 13px;
      color: var(--text-dim);
    }

    .meta-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .meta-item-gold {
      color: var(--gold-primary);
    }

    /* Reading Column Constraint */
    .reading-col {
      max-width: 820px;
      margin: 0 auto;
    }

    /* 3. Main Body Rich Content Area */
    .article-rich-content {
      font-size: 16px;
      line-height: 1.9;
      color: #d8dae5;
    }

    .article-rich-content p {
      margin-bottom: 24px;
    }

    .article-rich-content h2 {
      font-size: 24px;
      line-height: 1.4;
      color: #ffffff;
      margin: 44px 0 18px 0;
      padding-left: 14px;
      border-left: 3px solid var(--gold-primary);
    }

    .article-rich-content h3 {
      font-size: 19px;
      line-height: 1.45;
      color: var(--gold-light);
      margin: 32px 0 14px 0;
    }

    .article-rich-content blockquote {
      margin: 28px 0;
      padding: 20px 24px;
      background: rgba(19, 17, 28, 0.7);
      border-left: 3px solid var(--gold-primary);
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      color: var(--text-muted);
      font-style: italic;
    }

    .article-rich-content ul, .article-rich-content ol {
      margin: 0 0 24px 24px;
      color: var(--text-muted);
    }

    .article-rich-content li {
      margin-bottom: 8px;
    }

    .article-rich-content img {
      max-width: 100%;
      height: auto;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-base);
      margin: 24px 0;
    }

    .article-empty-state {
      padding: 60px 20px;
      text-align: center;
      background: var(--bg-card);
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      margin: 40px 0;
    }

    .article-empty-state p {
      font-size: 17px;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    /* 4. Security & DMCA Badge Card */
    .security-badge-box {
      margin: 48px 0 36px 0;
      padding: 24px;
      background: radial-gradient(circle at 10% 50%, rgba(229, 169, 60, 0.08) 0%, rgba(22, 20, 32, 0.85) 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      display: flex;
      align-items: flex-start;
      gap: 18px;
    }

    .security-icon-seal {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--gold-primary);
      background: rgba(229, 169, 60, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--gold-light);
      font-size: 20px;
      flex-shrink: 0;
    }

    .security-text h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--gold-light);
      margin: 0 0 6px 0;
    }

    .security-text p {
      font-size: 13px;
      line-height: 1.7;
      color: var(--text-dim);
      margin: 0;
    }

    /* 5. Engagement & Helpful Feedback */
    .interaction-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      padding: 20px 24px;
      background: rgba(26, 22, 43, 0.55);
      border: 1px solid rgba(229, 169, 60, 0.18);
      border-radius: var(--radius-md);
      margin-bottom: 48px;
    }

    .feedback-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .feedback-btn {
      background: rgba(19, 17, 28, 0.8);
      border: 1px solid var(--border-color);
      color: var(--text-muted);
      padding: 8px 18px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition);
    }

    .feedback-btn:hover {
      color: var(--gold-light);
      border-color: var(--gold-primary);
      background: rgba(229, 169, 60, 0.15);
    }

    .share-tags-list {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      color: var(--text-dim);
    }

    .spec-pill {
      background: rgba(157, 78, 221, 0.1);
      border: 1px solid rgba(157, 78, 221, 0.3);
      color: var(--text-muted);
      padding: 3px 10px;
      border-radius: 20px;
    }

    /* 6. Recommended Articles / Extended Reads */
    .recommend-section {
      margin-top: 60px;
      padding-top: 48px;
      border-top: 1px solid rgba(229, 169, 60, 0.15);
    }

    .rec-heading {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 24px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .rec-heading::before {
      content: "";
      display: inline-block;
      width: 4px;
      height: 18px;
      background: var(--gold-primary);
      border-radius: 2px;
    }

    .rec-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .rec-card:hover {
      border-color: var(--gold-primary);
      transform: translateY(-3px);
      box-shadow: 0 10px 24px rgba(0, 0, 0, 0.5);
    }

    .rec-card-tag {
      font-size: 11px;
      color: var(--gold-primary);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
    }

    .rec-card-title {
      font-size: 15px;
      font-weight: 600;
      line-height: 1.45;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .rec-card-desc {
      font-size: 13px;
      line-height: 1.6;
      color: var(--text-muted);
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .rec-card-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--gold-light);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 7. Pagination / Back Switcher */
    .article-nav-switcher {
      margin-top: 48px;
      padding: 20px 0;
      border-top: 1px dashed rgba(229, 169, 60, 0.2);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }

    .nav-switch-btn {
      font-size: 14px;
      color: var(--text-muted);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: rgba(22, 20, 32, 0.5);
    }

    .nav-switch-btn:hover {
      color: #fff;
      border-color: var(--gold-primary);
      background: rgba(229, 169, 60, 0.1);
    }

    /* Site Footer */
    .site-footer {
      background: #08090d;
      border-top: 1px solid var(--border-color);
      padding: 70px 0 24px 0;
      color: var(--text-muted);
    }

    .footer-title {
      color: var(--text-main);
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 18px;
      position: relative;
      padding-bottom: 8px;
    }

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

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

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

    .footer-links a {
      color: var(--text-muted);
      font-size: 14px;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(229, 169, 60, 0.12);
      margin-top: 50px;
      padding-top: 24px;
      font-size: 13px;
      color: var(--text-dim);
    }

    /* Responsive Queries */
    @media (max-width: 800px) {
      .nav-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links.is-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(11, 12, 16, 0.98);
        border-bottom: 1px solid var(--border-color);
        padding: 24px;
        gap: 16px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.9);
      }
      .article-h1 {
        font-size: 26px;
      }
    }

/* roulang page: category1 */
:root {
      --bg-dark: #0b0c10;
      --bg-surface: #13111c;
      --bg-elevated: #1a162b;
      --bg-card: rgba(22, 20, 32, 0.78);
      --gold-primary: #e5a93c;
      --gold-light: #ffc857;
      --gold-glow: rgba(229, 169, 60, 0.28);
      --purple-accent: #9d4edd;
      --crimson-accent: #d81159;
      --text-main: #f4f4f6;
      --text-muted: #b0b3c1;
      --text-dim: #64687a;
      --border-color: rgba(229, 169, 60, 0.22);
      --border-purple: rgba(157, 78, 221, 0.25);
      --radius-sm: 4px;
      --radius-md: 6px;
      --shadow-base: 0 12px 32px rgba(0, 0, 0, 0.65), 0 0 1px rgba(229, 169, 60, 0.35);
      --transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    }
    * {
      box-sizing: border-box;
    }
    body {
      background-color: var(--bg-dark);
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(157, 78, 221, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(229, 169, 60, 0.06) 0%, transparent 40%),
        linear-gradient(180deg, #0b0c10 0%, #110e1a 50%, #0b0c10 100%);
      background-attachment: fixed;
      color: var(--text-main);
      font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", -apple-system, sans-serif;
      font-size: 15px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      margin: 0;
      padding: 0;
    }
    a {
      color: var(--gold-light);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover, a:focus {
      color: #fff;
      text-shadow: 0 0 8px rgba(255, 200, 87, 0.6);
    }
    /* Site Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 12, 16, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.7);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 19px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: 1px;
    }
    .brand-rune-icon {
      width: 32px;
      height: 32px;
      border: 1px solid var(--gold-primary);
      transform: rotate(45deg);
      display: flex;
      align-items: center;
      justify-content: center;
      background: radial-gradient(circle, rgba(229, 169, 60, 0.3) 0%, rgba(19, 17, 28, 0.8) 100%);
      box-shadow: 0 0 10px var(--gold-glow);
    }
    .brand-rune-icon::after {
      content: "✦";
      transform: rotate(-45deg);
      color: var(--gold-light);
      font-size: 14px;
    }
    .brand-logo:hover .brand-rune-icon {
      box-shadow: 0 0 16px var(--gold-primary);
      transform: rotate(225deg);
      transition: var(--transition);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
      margin: 0;
    }
    .nav-links a {
      color: var(--text-muted);
      font-size: 15px;
      font-weight: 500;
      position: relative;
      padding: 6px 0;
    }
    .nav-links a::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 50%;
      width: 0;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
      transition: var(--transition);
      transform: translateX(-50%);
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--gold-light);
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn-gold {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: linear-gradient(135deg, var(--gold-primary) 0%, #c48b28 100%);
      color: #0b0c10 !important;
      font-weight: 700;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--gold-light);
      box-shadow: 0 4px 14px rgba(229, 169, 60, 0.35);
      cursor: pointer;
      transition: var(--transition);
      text-shadow: none;
    }
    .btn-gold:hover {
      background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold-primary) 100%);
      box-shadow: 0 6px 20px rgba(229, 169, 60, 0.6);
      transform: translateY(-2px);
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(22, 20, 32, 0.6);
      color: var(--text-main) !important;
      font-weight: 600;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      backdrop-filter: blur(8px);
      transition: var(--transition);
    }
    .btn-outline:hover {
      border-color: var(--gold-primary);
      background: rgba(229, 169, 60, 0.12);
      transform: translateY(-2px);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      color: var(--gold-light);
      font-size: 20px;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      cursor: pointer;
    }
    
    /* Common Section Styles */
    section {
      padding: 60px 0;
      position: relative;
    }
    .section-header {
      margin-bottom: 40px;
    }
    .section-subtitle {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 3px;
      text-transform: uppercase;
      color: var(--gold-primary);
      margin-bottom: 8px;
    }
    .section-title {
      font-size: 28px;
      line-height: 1.35;
      color: var(--text-main);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 820px;
      line-height: 1.8;
      margin: 0;
    }
    .glass-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      box-shadow: var(--shadow-base);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
      height: 100%;
    }
    .glass-card:hover {
      border-color: rgba(229, 169, 60, 0.55);
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.75), 0 0 16px rgba(229, 169, 60, 0.25);
      transform: translateY(-4px);
    }
    .glass-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(229, 169, 60, 0.4), transparent);
    }

    /* Category Specific 1: Header Billboard */
    .cat-billboard {
      padding: 44px 0 36px;
      background: linear-gradient(180deg, rgba(26, 22, 43, 0.6) 0%, rgba(11, 12, 16, 0.8) 100%);
      border-bottom: 1px solid var(--border-color);
    }
    .cat-billboard-inner {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .cat-billboard-main h1 {
      font-size: 34px;
      font-weight: 800;
      color: var(--text-main);
      margin: 0 0 12px;
      letter-spacing: 0.5px;
    }
    .cat-billboard-main p {
      margin: 0;
      color: var(--text-muted);
      font-size: 15px;
      max-width: 680px;
    }
    .cat-billboard-tags {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
    }
    .stat-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(19, 17, 28, 0.85);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 8px 16px;
      font-size: 13px;
      color: var(--text-main);
    }
    .stat-badge strong {
      color: var(--gold-light);
      font-size: 16px;
      font-family: "Cinzel", "Montserrat", sans-serif;
    }

    /* Section 2: Top Focus */
    .focus-card {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: linear-gradient(145deg, rgba(26, 22, 43, 0.9), rgba(17, 15, 26, 0.95));
      padding: 30px;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-base);
    }
    .focus-card-meta {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
    }
    .meta-tag {
      font-size: 11px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      background: rgba(229, 169, 60, 0.15);
      color: var(--gold-light);
      border: 1px solid rgba(229, 169, 60, 0.35);
      letter-spacing: 0.5px;
    }
    .focus-title {
      font-size: 22px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
      line-height: 1.4;
    }
    .focus-desc {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
      margin-bottom: 24px;
      flex-grow: 1;
    }
    .focus-specs-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      padding-top: 16px;
      border-top: 1px solid rgba(229, 169, 60, 0.15);
      background: rgba(11, 12, 16, 0.4);
      padding: 12px;
      border-radius: var(--radius-sm);
    }
    .spec-item {
      text-align: center;
    }
    .spec-item .label {
      display: block;
      font-size: 11px;
      color: var(--text-dim);
      margin-bottom: 4px;
    }
    .spec-item .val {
      font-size: 13px;
      font-weight: 600;
      color: var(--gold-light);
    }

    /* Section 3: CMS Content Stream Cards */
    .stream-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      height: 100%;
      box-shadow: var(--shadow-base);
      transition: var(--transition);
    }
    .stream-card:hover {
      border-color: var(--gold-primary);
      transform: translateY(-4px);
    }
    .stream-thumb {
      height: 160px;
      background: linear-gradient(135deg, #1f1b30 0%, #110e19 100%);
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      border-bottom: 1px solid rgba(229, 169, 60, 0.15);
    }
    .stream-thumb::after {
      content: "4K MASTER";
      font-family: "Cinzel", "Montserrat", sans-serif;
      font-size: 12px;
      letter-spacing: 2px;
      color: rgba(229, 169, 60, 0.35);
      border: 1px dashed rgba(229, 169, 60, 0.3);
      padding: 6px 14px;
      border-radius: 2px;
    }
    .stream-badge-time {
      position: absolute;
      bottom: 8px;
      right: 8px;
      background: rgba(0, 0, 0, 0.75);
      border: 1px solid rgba(255, 255, 255, 0.15);
      font-size: 11px;
      padding: 2px 6px;
      border-radius: 2px;
      color: var(--gold-light);
    }
    .stream-content {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .stream-category {
      font-size: 11px;
      color: var(--purple-accent);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
      font-weight: 600;
    }
    .stream-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .stream-title a {
      color: var(--text-main);
    }
    .stream-title a:hover {
      color: var(--gold-light);
    }
    .stream-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .stream-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid rgba(229, 169, 60, 0.1);
      padding-top: 12px;
      font-size: 12px;
      color: var(--text-dim);
    }
    .empty-cms-box {
      padding: 40px;
      text-align: center;
      background: rgba(22, 20, 32, 0.6);
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      color: var(--text-muted);
      font-size: 14px;
    }

    /* Section 4: Codec & Specs Table */
    .specs-table-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-base);
    }
    .specs-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      margin: 0;
      min-width: 680px;
    }
    .specs-table th {
      background: rgba(26, 22, 43, 0.85);
      color: var(--gold-light);
      font-size: 13px;
      font-weight: 700;
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      letter-spacing: 1px;
    }
    .specs-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(229, 169, 60, 0.08);
      font-size: 14px;
      color: var(--text-main);
    }
    .specs-table tr:hover td {
      background: rgba(229, 169, 60, 0.03);
    }
    .status-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #2ec4b6;
      box-shadow: 0 0 8px #2ec4b6;
      margin-right: 6px;
    }

    /* Section 5: Tag Cloud */
    .tag-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .theme-chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(22, 20, 32, 0.8);
      border: 1px solid var(--border-color);
      padding: 10px 18px;
      border-radius: var(--radius-sm);
      color: var(--text-main);
      font-size: 13px;
      transition: var(--transition);
    }
    .theme-chip:hover {
      border-color: var(--gold-primary);
      background: rgba(229, 169, 60, 0.1);
      transform: translateY(-2px);
      color: var(--gold-light);
    }
    .theme-chip span {
      font-size: 11px;
      color: var(--text-dim);
    }

    /* Section 6: Steps Guide */
    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      height: 100%;
      position: relative;
    }
    .step-number {
      font-family: "Cinzel", "Montserrat", sans-serif;
      font-size: 32px;
      font-weight: 800;
      color: rgba(229, 169, 60, 0.25);
      line-height: 1;
      margin-bottom: 12px;
    }
    .step-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      margin: 0;
    }

    /* Section 7: FAQ Accordion */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 24px;
      box-shadow: var(--shadow-base);
    }
    .faq-question {
      font-size: 16px;
      font-weight: 700;
      color: var(--gold-light);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .faq-question::before {
      content: "Q";
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 22px;
      height: 22px;
      border: 1px solid var(--gold-primary);
      color: var(--gold-primary);
      font-size: 12px;
      font-weight: 800;
      border-radius: 2px;
      flex-shrink: 0;
    }
    .faq-answer {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin: 0;
      padding-left: 32px;
    }

    /* Section 8: Fast Channel CTA Banner */
    .channel-cta-banner {
      background: radial-gradient(circle at 50% 50%, rgba(157, 78, 221, 0.15) 0%, rgba(19, 17, 28, 0.95) 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 40px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-base);
    }
    .channel-cta-banner h2 {
      font-size: 26px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .channel-cta-banner p {
      color: var(--text-muted);
      font-size: 14px;
      max-width: 640px;
      margin: 0 auto 24px;
    }

    /* Site Footer */
    .site-footer {
      background: #08090d;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 24px;
      position: relative;
    }
    .footer-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--gold-light);
      margin-bottom: 18px;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: var(--text-muted);
      font-size: 13px;
    }
    .footer-links a:hover {
      color: var(--gold-light);
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 40px;
      padding-top: 20px;
      font-size: 12px;
      color: var(--text-dim);
    }

    /* Responsive */
    @media (max-width: 840px) {
      .nav-links {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .cat-billboard-main h1 {
        font-size: 26px;
      }
      .section-title {
        font-size: 22px;
      }
      .focus-specs-grid {
        grid-template-columns: 1fr;
      }
      .channel-cta-banner {
        padding: 24px 16px;
      }
    }

/* roulang page: category2 */
:root {
      --bg-dark: #0b0c10;
      --bg-surface: #13111c;
      --bg-elevated: #1a162b;
      --bg-card: rgba(22, 20, 32, 0.78);
      --gold-primary: #e5a93c;
      --gold-light: #ffc857;
      --gold-glow: rgba(229, 169, 60, 0.28);
      --purple-accent: #9d4edd;
      --crimson-accent: #d81159;
      --text-main: #f4f4f6;
      --text-muted: #b0b3c1;
      --text-dim: #64687a;
      --border-color: rgba(229, 169, 60, 0.22);
      --border-purple: rgba(157, 78, 221, 0.25);
      --radius-sm: 4px;
      --radius-md: 6px;
      --shadow-base: 0 12px 32px rgba(0, 0, 0, 0.65), 0 0 1px rgba(229, 169, 60, 0.35);
      --transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    }

    * {
      box-sizing: border-box;
    }

    body {
      background-color: var(--bg-dark);
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(157, 78, 221, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 85% 85%, rgba(229, 169, 60, 0.06) 0%, transparent 40%),
        linear-gradient(180deg, #0b0c10 0%, #110e1a 50%, #0b0c10 100%);
      background-attachment: fixed;
      color: var(--text-main);
      font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", -apple-system, sans-serif;
      font-size: 15px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      margin: 0;
    }

    a {
      color: var(--gold-light);
      text-decoration: none;
      transition: var(--transition);
    }

    a:hover, a:focus {
      color: #fff;
      text-shadow: 0 0 8px rgba(255, 200, 87, 0.6);
    }

    /* Site Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 12, 16, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.7);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 19px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: 1px;
    }

    .brand-rune-icon {
      width: 32px;
      height: 32px;
      border: 1px solid var(--gold-primary);
      transform: rotate(45deg);
      display: flex;
      align-items: center;
      justify-content: center;
      background: radial-gradient(circle, rgba(229, 169, 60, 0.3) 0%, rgba(19, 17, 28, 0.8) 100%);
      box-shadow: 0 0 10px var(--gold-glow);
      flex-shrink: 0;
    }

    .brand-rune-icon::after {
      content: "✦";
      transform: rotate(-45deg);
      color: var(--gold-light);
      font-size: 14px;
    }

    .brand-logo:hover .brand-rune-icon {
      box-shadow: 0 0 16px var(--gold-primary);
      transform: rotate(225deg);
      transition: var(--transition);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .nav-links a {
      color: var(--text-muted);
      font-size: 15px;
      font-weight: 500;
      position: relative;
      padding: 6px 0;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 50%;
      width: 0;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--gold-primary), transparent);
      transition: var(--transition);
      transform: translateX(-50%);
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--gold-light);
    }

    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      color: var(--gold-light);
      font-size: 20px;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
    }

    .btn-gold {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: linear-gradient(135deg, var(--gold-primary) 0%, #c48b28 100%);
      color: #0b0c10 !important;
      font-weight: 700;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--gold-light);
      box-shadow: 0 4px 14px rgba(229, 169, 60, 0.35);
      cursor: pointer;
      transition: var(--transition);
      text-shadow: none;
      white-space: nowrap;
    }

    .btn-gold:hover {
      background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold-primary) 100%);
      box-shadow: 0 6px 20px rgba(229, 169, 60, 0.6);
      transform: translateY(-2px);
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(22, 20, 32, 0.6);
      color: var(--text-main) !important;
      font-weight: 600;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      backdrop-filter: blur(8px);
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-outline:hover {
      border-color: var(--gold-primary);
      background: rgba(229, 169, 60, 0.12);
      transform: translateY(-2px);
    }

    /* Common Card & Section */
    section {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      margin-bottom: 40px;
    }

    .section-subtitle {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 3px;
      text-transform: uppercase;
      color: var(--gold-primary);
      margin-bottom: 8px;
    }

    .section-title {
      font-size: 28px;
      line-height: 1.35;
      color: var(--text-main);
      margin-bottom: 12px;
      font-weight: 700;
    }

    .section-desc {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 780px;
      line-height: 1.8;
      margin: 0;
    }

    .glass-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      box-shadow: var(--shadow-base);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
      height: 100%;
    }

    .glass-card:hover {
      border-color: rgba(229, 169, 60, 0.55);
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.75), 0 0 16px rgba(229, 169, 60, 0.25);
      transform: translateY(-4px);
    }

    .glass-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(229, 169, 60, 0.4), transparent);
    }

    /* Section 1: Category Banner (Compact strip, not huge hero) */
    .category-banner-section {
      padding: 46px 0 40px;
      background: linear-gradient(180deg, rgba(19, 17, 28, 0.85) 0%, rgba(11, 12, 16, 0.6) 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }

    .cat-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      background: rgba(157, 78, 221, 0.15);
      border: 1px solid var(--border-purple);
      color: #e0aaff;
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 12px;
    }

    .category-h1 {
      font-size: 34px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin: 0 0 14px;
      letter-spacing: 0.5px;
    }

    .category-intro {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 680px;
      margin: 0;
    }

    .stat-pill-group {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }

    .stat-pill {
      background: rgba(26, 22, 43, 0.85);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 14px 18px;
      display: flex;
      flex-direction: column;
      gap: 4px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    }

    .stat-pill-val {
      font-size: 22px;
      font-weight: 800;
      color: var(--gold-light);
      line-height: 1.2;
      letter-spacing: 0.5px;
    }

    .stat-pill-label {
      font-size: 12px;
      color: var(--text-dim);
      font-weight: 500;
    }

    .quick-filter-strip {
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px dashed rgba(229, 169, 60, 0.18);
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
    }

    .filter-label {
      font-size: 13px;
      color: var(--text-dim);
      font-weight: 600;
    }

    .filter-item {
      display: inline-block;
      font-size: 13px;
      padding: 5px 14px;
      border-radius: var(--radius-sm);
      background: rgba(22, 20, 32, 0.6);
      border: 1px solid rgba(229, 169, 60, 0.2);
      color: var(--text-muted);
      transition: var(--transition);
    }

    .filter-item:hover, .filter-item.active {
      background: rgba(229, 169, 60, 0.15);
      border-color: var(--gold-primary);
      color: var(--gold-light);
    }

    /* Section 2: Dual Focus Showcase Cards */
    .focus-card {
      background: linear-gradient(145deg, rgba(26, 22, 43, 0.9) 0%, rgba(17, 14, 26, 0.85) 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 34px;
      position: relative;
      height: 100%;
      box-shadow: var(--shadow-base);
    }

    .focus-badge {
      display: inline-block;
      font-size: 11px;
      font-weight: 700;
      color: var(--gold-light);
      background: rgba(229, 169, 60, 0.12);
      border: 1px solid var(--border-color);
      padding: 3px 10px;
      border-radius: 2px;
      margin-bottom: 16px;
      letter-spacing: 1px;
    }

    .focus-card h3 {
      font-size: 22px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.4;
    }

    .focus-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 22px;
    }

    .focus-metrics {
      display: flex;
      gap: 20px;
      border-top: 1px solid rgba(229, 169, 60, 0.15);
      padding-top: 18px;
    }

    .metric-col {
      display: flex;
      flex-direction: column;
      gap: 3px;
    }

    .metric-num {
      font-size: 18px;
      font-weight: 700;
      color: var(--gold-primary);
    }

    .metric-name {
      font-size: 12px;
      color: var(--text-dim);
    }

    /* Section 3: CMS Resource / Article Grid */
    .media-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      height: 100%;
      box-shadow: var(--shadow-base);
      transition: var(--transition);
    }

    .media-card:hover {
      border-color: var(--gold-primary);
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.75), 0 0 16px var(--gold-glow);
      transform: translateY(-4px);
    }

    .media-thumb {
      height: 160px;
      background: linear-gradient(135deg, #1d1830 0%, #100d1c 100%);
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      border-bottom: 1px solid rgba(229, 169, 60, 0.15);
    }

    .media-thumb::after {
      content: "▶";
      font-size: 26px;
      color: var(--gold-light);
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: rgba(11, 12, 16, 0.65);
      border: 1px solid var(--gold-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      text-indent: 4px;
      box-shadow: 0 0 16px var(--gold-glow);
      transition: var(--transition);
    }

    .media-card:hover .media-thumb::after {
      transform: scale(1.12);
      background: var(--gold-primary);
      color: #0b0c10;
    }

    .thumb-tag {
      position: absolute;
      top: 10px;
      left: 10px;
      background: rgba(11, 12, 16, 0.85);
      border: 1px solid var(--border-color);
      color: var(--gold-light);
      font-size: 11px;
      font-weight: 600;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
    }

    .thumb-duration {
      position: absolute;
      bottom: 10px;
      right: 10px;
      background: rgba(11, 12, 16, 0.85);
      color: #fff;
      font-size: 11px;
      font-family: monospace;
      padding: 2px 6px;
      border-radius: 2px;
    }

    .media-content {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .media-meta-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 10px;
      font-size: 12px;
      color: var(--text-dim);
    }

    .media-category {
      color: #c77dff;
      font-weight: 600;
    }

    .media-title {
      font-size: 16px;
      font-weight: 700;
      line-height: 1.45;
      margin: 0 0 10px;
      color: var(--text-main);
    }

    .media-title a {
      color: var(--text-main);
    }

    .media-title a:hover {
      color: var(--gold-light);
    }

    .media-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .media-foot {
      padding-top: 12px;
      border-top: 1px solid rgba(229, 169, 60, 0.1);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .media-link-btn {
      font-size: 12px;
      font-weight: 600;
      color: var(--gold-primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .media-link-btn:hover {
      color: var(--gold-light);
      gap: 7px;
    }

    /* Section 4: Codec & Technical Parameters Table */
    .specs-table-container {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-base);
    }

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

    .specs-table th {
      background: rgba(26, 22, 43, 0.9);
      color: var(--gold-light);
      padding: 16px 20px;
      font-size: 14px;
      font-weight: 700;
      border-bottom: 1px solid var(--border-color);
      white-space: nowrap;
    }

    .specs-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(229, 169, 60, 0.1);
      color: var(--text-muted);
      font-size: 14px;
    }

    .specs-table tr:hover td {
      background: rgba(229, 169, 60, 0.04);
      color: var(--text-main);
    }

    .badge-protocol {
      display: inline-block;
      padding: 3px 8px;
      font-size: 12px;
      border-radius: 3px;
      font-family: monospace;
      font-weight: 600;
      background: rgba(157, 78, 221, 0.18);
      border: 1px solid var(--border-purple);
      color: #e0aaff;
    }

    .status-check {
      color: #48bb78;
      font-weight: 700;
    }

    /* Section 5: Tag Cloud Matrix */
    .rune-tag-matrix {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .rune-tag-item {
      background: rgba(22, 20, 32, 0.7);
      border: 1px solid var(--border-color);
      padding: 10px 18px;
      border-radius: var(--radius-sm);
      color: var(--text-muted);
      font-size: 14px;
      transition: var(--transition);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .rune-tag-item::before {
      content: "✦";
      color: var(--gold-primary);
      font-size: 10px;
    }

    .rune-tag-item:hover {
      background: rgba(229, 169, 60, 0.14);
      border-color: var(--gold-primary);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 4px 14px rgba(229, 169, 60, 0.2);
    }

    /* Section 6: Optimization Steps */
    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      height: 100%;
      position: relative;
      transition: var(--transition);
    }

    .step-card:hover {
      border-color: var(--gold-primary);
      transform: translateY(-3px);
    }

    .step-num {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: rgba(229, 169, 60, 0.12);
      border: 1px solid var(--gold-primary);
      color: var(--gold-light);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 15px;
      margin-bottom: 16px;
    }

    .step-card h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .step-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin: 0;
    }

    /* Section 7: FAQ Accordion */
    .faq-block {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 28px;
      margin-bottom: 16px;
      transition: var(--transition);
    }

    .faq-block:hover {
      border-color: rgba(229, 169, 60, 0.45);
    }

    .faq-q {
      font-size: 17px;
      font-weight: 700;
      color: var(--gold-light);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .faq-q::before {
      content: "Q.";
      color: var(--gold-primary);
      font-weight: 900;
    }

    .faq-a {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      margin: 0;
    }

    /* Section 8: Channel VIP Access Box */
    .channel-cta-box {
      background: radial-gradient(circle at 50% 50%, rgba(36, 28, 58, 0.95) 0%, rgba(17, 14, 26, 0.98) 100%);
      border: 1px solid var(--gold-primary);
      border-radius: var(--radius-md);
      padding: 48px;
      text-align: center;
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.8), 0 0 20px var(--gold-glow);
      position: relative;
    }

    .channel-cta-box h3 {
      font-size: 28px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .channel-cta-box p {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 660px;
      margin: 0 auto 28px;
      line-height: 1.8;
    }

    /* Site Footer */
    .site-footer {
      background: #08090d;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 24px;
      margin-top: 40px;
    }

    .footer-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--gold-light);
      margin-bottom: 18px;
      letter-spacing: 0.5px;
      position: relative;
      padding-bottom: 8px;
    }

    .footer-title::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 28px;
      height: 2px;
      background: var(--gold-primary);
    }

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

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

    .footer-links a {
      color: var(--text-muted);
      font-size: 14px;
    }

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

    .footer-bottom {
      margin-top: 40px;
      padding-top: 24px;
      border-top: 1px solid rgba(229, 169, 60, 0.12);
      font-size: 13px;
      color: var(--text-dim);
    }

    /* Responsive adjustments */
    @media screen and (max-width: 1024px) {
      .nav-links {
        gap: 20px;
      }
    }

    @media screen and (max-width: 768px) {
      .mobile-menu-btn {
        display: block;
      }

      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(11, 12, 16, 0.98);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: 0 12px 30px rgba(0, 0, 0, 0.9);
      }

      .nav-links.is-open {
        display: flex;
      }

      .category-h1 {
        font-size: 26px;
      }

      .stat-pill-group {
        margin-top: 24px;
      }

      .channel-cta-box {
        padding: 30px 20px;
      }
    }