/* roulang page: index */
:root {
      --primary: #2563EB;
      --primary-hover: #1D4ED8;
      --dark: #0F172A;
      --bg: #FFFFFF;
      --bg-light: #F8FAFC;
      --bg-slate: #F1F5F9;
      --text: #1E293B;
      --text-secondary: #475569;
      --text-muted: #94A3B8;
      --border: #E2E8F0;
      --success: #16A34A;
      --warning: #EA580C;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-badge: 999px;
      --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
      --shadow-card-hover: 0 8px 20px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);
      --transition: 0.2s ease;
      --container-max: 1200px;
      --section-pad-desktop: 72px;
      --section-pad-mobile: 48px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
      font-size: 16px;
      line-height: 1.7;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }

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

    img {
      max-width: 100%;
      display: block;
    }

    button, input {
      font-family: inherit;
      outline: none;
      border: none;
    }

    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }

    /* ===== Section base ===== */
    section {
      padding: var(--section-pad-desktop) 0;
    }

    .section-subtitle {
      font-size: 0.95rem;
      color: var(--text-secondary);
      max-width: 720px;
      line-height: 1.7;
      margin-top: 12px;
    }

    .section-title {
      font-size: clamp(24px, 3vw, 32px);
      font-weight: 700;
      color: var(--dark);
      line-height: 1.3;
      letter-spacing: -0.01em;
    }

    .section-head {
      margin-bottom: 36px;
    }

    .section-head.center {
      text-align: center;
    }
    .section-head.center .section-subtitle {
      margin-left: auto;
      margin-right: auto;
    }

    /* ===== Header / Nav ===== */
    header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: rgba(255,255,255,0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border);
      transition: box-shadow var(--transition);
    }

    header.scrolled {
      box-shadow: 0 4px 16px rgba(0,0,0,0.06);
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 64px;
      gap: 16px;
    }

    .logo {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark);
      white-space: nowrap;
      letter-spacing: -0.02em;
    }
    .logo span {
      color: var(--primary);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-secondary);
    }
    .nav-links a {
      position: relative;
      padding: 4px 0;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      border-radius: 4px;
      transition: width var(--transition);
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }
    .nav-links a.active {
      color: var(--primary);
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 12px;
      white-space: nowrap;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 20px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 0.9rem;
      cursor: pointer;
      transition: all var(--transition);
      line-height: 1.4;
      text-align: center;
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.28);
    }
    .btn-primary:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }
    .btn-primary:active {
      transform: translateY(0);
      box-shadow: none;
    }

    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--primary);
      color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(37, 99, 235, 0.2);
    }
    .btn-outline:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }

    .btn-lg {
      padding: 12px 28px;
      font-size: 0.95rem;
      border-radius: 10px;
    }

    .btn-sm {
      padding: 8px 16px;
      font-size: 0.85rem;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .hamburger span {
      width: 24px;
      height: 2px;
      background: var(--dark);
      border-radius: 4px;
      transition: all var(--transition);
    }

    /* Mobile menu */
    .mobile-menu {
      display: none;
      flex-direction: column;
      background: #fff;
      border-bottom: 1px solid var(--border);
      padding: 16px 24px 24px;
      gap: 8px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
    }
    .mobile-menu.open {
      max-height: 520px;
      padding: 16px 24px 24px;
    }
    .mobile-menu a {
      padding: 10px 0;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-secondary);
      border-bottom: 1px solid var(--bg-slate);
    }
    .mobile-menu a:hover {
      color: var(--primary);
    }
    .mobile-menu .btn {
      margin-top: 10px;
    }

    /* ===== Hero (card-stack layout) ===== */
    .hero {
      padding-top: 136px;
      padding-bottom: 80px;
      background: linear-gradient(180deg, #EFF4FF 0%, #F8FAFC 100%);
      min-height: 640px;
      display: flex;
      align-items: center;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }

    .hero-copy {
      max-width: 580px;
    }
    .hero-copy h1 {
      font-size: clamp(28px, 4vw, 44px);
      font-weight: 700;
      line-height: 1.25;
      color: var(--dark);
      letter-spacing: -0.02em;
      margin-bottom: 20px;
    }
    .hero-copy h1 em {
      color: var(--primary);
      font-style: normal;
    }
    .hero-copy .hero-subtitle {
      font-size: 1.05rem;
      color: var(--text-secondary);
      line-height: 1.8;
      margin-bottom: 28px;
      max-width: 520px;
    }
    .hero-actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
    }

    .hero-metrics {
      display: flex;
      gap: 28px;
      margin-top: 32px;
      flex-wrap: wrap;
    }
    .hero-metric .num {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--dark);
    }
    .hero-metric .label {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* Card stack side */
    .hero-card-stack {
      position: relative;
      min-height: 420px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .hero-card {
      position: absolute;
      width: 340px;
      background: #fff;
      border-radius: 16px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.06);
      overflow: hidden;
      transition: transform 0.3s ease;
    }
    .hero-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }
    .hero-card .card-body {
      padding: 18px 20px;
    }
    .hero-card .card-tag {
      font-size: 0.75rem;
      color: var(--primary);
      background: #EFF6FF;
      border-radius: var(--radius-badge);
      padding: 4px 10px;
      display: inline-block;
      margin-bottom: 8px;
      font-weight: 500;
    }
    .hero-card .card-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 6px;
    }
    .hero-card .card-sub {
      font-size: 0.85rem;
      color: var(--text-secondary);
    }

    .hero-card.main {
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%) rotate(0deg) scale(1.05);
      z-index: 3;
      width: 360px;
    }
    .hero-card.left {
      left: 0;
      top: 20px;
      transform: rotate(-4deg);
      z-index: 2;
      width: 300px;
    }
    .hero-card.right {
      right: 0;
      bottom: 20px;
      transform: rotate(4deg);
      z-index: 2;
      width: 300px;
    }

    /* ===== Trust bar ===== */
    .trust-bar {
      background: var(--dark);
      padding: 28px 0;
      border-radius: 0;
    }
    .trust-bar-grid {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 24px;
      flex-wrap: wrap;
    }
    .trust-item {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #fff;
    }
    .trust-item .trust-num {
      font-size: 1.5rem;
      font-weight: 700;
      color: #fff;
    }
    .trust-item .trust-label {
      font-size: 0.85rem;
      color: #CBD5E1;
    }

    /* ===== Content calendar ===== */
    .calendar-list {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
      gap: 16px;
    }
    .calendar-item {
      background: var(--bg-light);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 18px 20px;
      transition: all var(--transition);
      cursor: default;
    }
    .calendar-item:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-2px);
      border-color: var(--primary);
    }
    .calendar-date {
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 600;
      letter-spacing: 0.02em;
      text-transform: uppercase;
      margin-bottom: 6px;
    }
    .calendar-title {
      font-weight: 700;
      color: var(--dark);
      font-size: 0.95rem;
      margin-bottom: 4px;
    }
    .calendar-desc {
      font-size: 0.85rem;
      color: var(--text-secondary);
      line-height: 1.5;
    }

    /* ===== Popular topics ===== */
    .topics-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .topic-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #EFF6FF;
      color: var(--primary);
      border-radius: var(--radius-badge);
      padding: 10px 18px;
      font-size: 0.9rem;
      font-weight: 500;
      transition: all var(--transition);
      border: 1px solid transparent;
    }
    .topic-tag:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 14px rgba(37, 99, 235, 0.22);
    }

    /* ===== Opinion / insight ===== */
    .insight-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
      gap: 24px;
    }
    .insight-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 24px;
      transition: all var(--transition);
    }
    .insight-card:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
      border-color: var(--primary);
    }
    .insight-card .tag {
      font-size: 0.75rem;
      background: #EFF6FF;
      color: var(--primary);
      border-radius: var(--radius-badge);
      padding: 4px 12px;
      display: inline-block;
      margin-bottom: 12px;
      font-weight: 500;
    }
    .insight-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .insight-card p {
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ===== Feature grid ===== */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 26px;
      transition: all var(--transition);
    }
    .feature-card:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
      border-color: var(--primary);
    }
    .feature-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: #EFF6FF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .feature-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 10px;
    }
    .feature-card p {
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ===== Scenario grid ===== */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 24px;
    }
    .scenario-card {
      background: var(--bg-light);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 24px;
      transition: all var(--transition);
    }
    .scenario-card:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
      background: #fff;
      border-color: var(--primary);
    }
    .scenario-card h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
    }
    .scenario-card p {
      font-size: 0.88rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* ===== Screenshot demo ===== */
    .demo-showcase {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .demo-item {
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border);
      transition: all var(--transition);
    }
    .demo-item:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
    }
    .demo-item img {
      width: 100%;
      height: 220px;
      object-fit: cover;
    }
    .demo-caption {
      padding: 12px 16px;
      font-size: 0.85rem;
      color: var(--text-secondary);
      background: #fff;
    }

    /* ===== News list ===== */
    .news-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .news-item {
      display: flex;
      align-items: center;
      gap: 20px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 18px 22px;
      transition: all var(--transition);
    }
    .news-item:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-2px);
      border-color: var(--primary);
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      white-space: nowrap;
      min-width: 80px;
      font-weight: 500;
    }
    .news-content {
      flex: 1;
    }
    .news-content h3 {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 4px;
    }
    .news-content p {
      font-size: 0.85rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }
    .news-link {
      white-space: nowrap;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .news-link:hover {
      color: var(--primary-hover);
      text-decoration: underline;
    }

    /* ===== Media partners ===== */
    .media-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
      justify-content: space-between;
    }
    .media-logo {
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--bg-light);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 16px 24px;
      font-weight: 700;
      color: var(--text-muted);
      font-size: 0.9rem;
      letter-spacing: 0.02em;
      transition: all var(--transition);
      min-width: 120px;
    }
    .media-logo:hover {
      background: #fff;
      color: var(--primary);
      border-color: var(--primary);
      box-shadow: var(--shadow-card);
    }

    /* ===== Data analysis ===== */
    .data-kpi-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .kpi-card {
      background: var(--dark);
      border-radius: var(--radius-card);
      padding: 26px;
      text-align: center;
      transition: all var(--transition);
    }
    .kpi-card:hover {
      transform: translateY(-4px);
      background: #1E293B;
    }
    .kpi-num {
      font-size: 2.2rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 6px;
    }
    .kpi-label {
      font-size: 0.85rem;
      color: #CBD5E1;
    }

    /* ===== Success cases ===== */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
      gap: 24px;
    }
    .case-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: all var(--transition);
    }
    .case-card:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
    }
    .case-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }
    .case-body {
      padding: 20px;
    }
    .case-body h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 8px;
    }
    .case-body p {
      font-size: 0.85rem;
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* ===== Pricing ===== */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }
    .pricing-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 30px 24px;
      text-align: center;
      transition: all var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .pricing-card:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
    }
    .pricing-card.recommended {
      border-color: var(--primary);
      background: #EFF6FF;
      box-shadow: 0 8px 24px rgba(37, 99, 235, 0.1);
    }
    .pricing-card h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 12px;
    }
    .pricing-card .price {
      font-size: 2.4rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .pricing-card .price span {
      font-size: 0.9rem;
      color: var(--text-secondary);
      font-weight: 400;
    }
    .pricing-card ul {
      list-style: none;
      margin: 20px 0;
      text-align: left;
    }
    .pricing-card ul li {
      font-size: 0.88rem;
      color: var(--text-secondary);
      padding: 6px 0;
      border-bottom: 1px solid var(--bg-slate);
      position: relative;
      padding-left: 20px;
    }
    .pricing-card ul li::before {
      content: '✓';
      position: absolute;
      left: 0;
      color: var(--success);
      font-weight: 700;
    }

    /* ===== Testimonials ===== */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 24px;
    }
    .testimonial-card {
      background: var(--bg-light);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 24px;
      transition: all var(--transition);
    }
    .testimonial-card:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
      background: #fff;
    }
    .testimonial-card .stars {
      color: #F59E0B;
      font-size: 0.9rem;
      margin-bottom: 10px;
      letter-spacing: 2px;
    }
    .testimonial-card p {
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 14px;
    }
    .testimonial-card .author {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--dark);
    }

    /* ===== Community rating ===== */
    .rating-grid {
      display: flex;
      gap: 32px;
      align-items: center;
      flex-wrap: wrap;
      justify-content: center;
      text-align: center;
    }
    .rating-score {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 28px 36px;
      min-width: 180px;
    }
    .rating-score .big {
      font-size: 3rem;
      font-weight: 700;
      color: var(--primary);
    }
    .rating-score .small {
      font-size: 0.9rem;
      color: var(--text-secondary);
      margin-top: 6px;
    }

    /* ===== Platform guarantee ===== */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
      gap: 20px;
    }
    .guarantee-card {
      background: var(--bg-light);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 24px;
      display: flex;
      align-items: center;
      gap: 14px;
      transition: all var(--transition);
    }
    .guarantee-card:hover {
      background: #fff;
      box-shadow: var(--shadow-card);
      border-color: var(--primary);
    }
    .guarantee-icon {
      font-size: 1.6rem;
      color: var(--primary);
    }
    .guarantee-card h3 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark);
    }
    .guarantee-card p {
      font-size: 0.82rem;
      color: var(--text-secondary);
    }

    /* ===== Brand intro ===== */
    .brand-intro {
      background: #0F172A;
      padding: 64px 0;
      border-radius: 20px;
      margin: 0 24px;
    }
    .brand-intro .container {
      max-width: 900px;
    }
    .brand-intro h2 {
      font-size: clamp(24px, 3vw, 32px);
      font-weight: 700;
      color: #fff;
      margin-bottom: 18px;
    }
    .brand-intro p {
      font-size: 0.95rem;
      color: #CBD5E1;
      line-height: 1.9;
    }

    /* ===== FAQ ===== */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 840px;
      margin: 0 auto;
    }
    .faq-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: all var(--transition);
    }
    .faq-question {
      width: 100%;
      background: none;
      border: none;
      padding: 20px 24px;
      font-size: 0.98rem;
      font-weight: 600;
      color: var(--dark);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      text-align: left;
    }
    .faq-question .icon {
      transition: transform 0.3s ease;
      font-size: 1.2rem;
      color: var(--text-muted);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 24px;
      font-size: 0.9rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 24px 20px;
    }
    .faq-item.active .faq-question .icon {
      transform: rotate(180deg);
      color: var(--primary);
    }

    /* ===== Subscribe ===== */
    .subscribe-band {
      background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
      border-radius: 20px;
      padding: 48px 36px;
      margin: 0 24px;
    }
    .subscribe-grid {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      flex-wrap: wrap;
    }
    .subscribe-copy h2 {
      font-size: clamp(22px, 2.5vw, 28px);
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
    }
    .subscribe-copy p {
      color: #DBEAFE;
      font-size: 0.9rem;
    }
    .subscribe-form {
      display: flex;
      gap: 10px;
      flex: 1;
      min-width: 280px;
      max-width: 480px;
    }
    .subscribe-form input {
      flex: 1;
      padding: 12px 20px;
      border-radius: var(--radius-btn);
      border: 1px solid transparent;
      background: #fff;
      font-size: 0.9rem;
      color: var(--text);
    }
    .subscribe-form input:focus {
      outline: 2px solid #fff;
      outline-offset: 2px;
      border-color: #fff;
    }
    .subscribe-form .btn {
      background: var(--dark);
      color: #fff;
    }
    .subscribe-form .btn:hover {
      background: #1E293B;
    }

    /* ===== Final CTA ===== */
    .final-cta {
      background: var(--dark);
      padding: 80px 0;
      text-align: center;
      border-radius: 0;
    }
    .final-cta h2 {
      font-size: clamp(26px, 3vw, 36px);
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }
    .final-cta p {
      color: #CBD5E1;
      font-size: 1rem;
      max-width: 600px;
      margin: 0 auto 28px;
      line-height: 1.8;
    }
    .final-cta .btn {
      background: var(--primary);
      color: #fff;
      padding: 14px 34px;
      font-size: 1rem;
    }
    .final-cta .btn:hover {
      background: var(--primary-hover);
    }

    /* ===== Footer ===== */
    footer {
      background: #0F172A;
      color: #CBD5E1;
      padding: 64px 0 28px;
      border-top: 1px solid #1E293B;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 36px;
    }
    .footer-col h3 {
      font-size: 1rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-col p {
      font-size: 0.88rem;
      line-height: 1.8;
      color: #94A3B8;
    }
    .footer-col a {
      display: block;
      font-size: 0.88rem;
      color: #94A3B8;
      padding: 5px 0;
      transition: color var(--transition);
    }
    .footer-col a:hover {
      color: #fff;
      text-decoration: underline;
    }
    .footer-copy {
      border-top: 1px solid #1E293B;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748B;
    }
    .footer-copy a {
      color: #94A3B8;
    }
    .footer-copy a:hover {
      color: #fff;
    }

    /* ===== Responsive ===== */
    @media (max-width: 1023px) {
      .nav-links {
        display: none;
      }
      .hamburger {
        display: flex;
      }
      .mobile-menu {
        display: flex;
      }
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .hero-card-stack {
        min-height: 380px;
      }
      .hero-card {
        width: 280px;
      }
      .hero-card.main {
        width: 300px;
      }
      .hero-card.left, .hero-card.right {
        width: 240px;
      }
      .feature-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
      }
      .data-kpi-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .demo-showcase {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 767px) {
      section {
        padding: var(--section-pad-mobile) 0;
      }
      .hero {
        padding-top: 104px;
        padding-bottom: 48px;
        min-height: auto;
      }
      .hero-card-stack {
        min-height: 300px;
      }
      .hero-card {
        width: 200px;
      }
      .hero-card.main {
        width: 220px;
      }
      .hero-card.left, .hero-card.right {
        width: 180px;
      }
      .feature-grid {
        grid-template-columns: 1fr;
      }
      .demo-showcase {
        grid-template-columns: 1fr;
      }
      .data-kpi-grid {
        grid-template-columns: 1fr;
      }
      .news-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
      }
      .news-date {
        min-width: auto;
      }
      .trust-bar-grid {
        justify-content: center;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .section-head {
        margin-bottom: 24px;
      }
      .brand-intro, .subscribe-band {
        margin: 0 12px;
        padding: 36px 20px;
      }
      .final-cta {
        padding: 56px 20px;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding: 0 16px;
      }
      .nav-wrap {
        height: 56px;
      }
      .hero-card-stack {
        min-height: 260px;
      }
      .hero-card {
        display: none;
      }
      .hero-card.main {
        display: block;
        position: relative;
        left: auto;
        top: auto;
        transform: none;
        width: 100%;
        max-width: 340px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .hero-metrics {
        gap: 16px;
      }
    }

/* roulang page: category1 */
:root {
            --primary: #2563EB;
            --primary-hover: #1D4ED8;
            --dark: #0F172A;
            --bg: #FFFFFF;
            --bg-light: #F8FAFC;
            --bg-slate: #F1F5F9;
            --text: #1E293B;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --border: #E2E8F0;
            --success: #16A34A;
            --warning: #EA580C;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 8px 20px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);
            --transition: 0.2s ease;
            --container-max: 1200px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 48px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            outline: none;
            border: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        section {
            padding: var(--section-pad-desktop) 0;
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.7;
            margin-top: 12px;
        }
        .section-title {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        .section-head {
            margin-bottom: 36px;
        }
        .section-head.center {
            text-align: center;
        }
        .section-head.center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header / Nav ===== */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        header.scrolled {
            box-shadow: 0 4px 16px rgba(0,0,0,0.06);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 16px;
        }
        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--dark);
            white-space: nowrap;
            letter-spacing: -0.02em;
        }
        .logo span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
        }
        .nav-links a {
            position: relative;
            padding: 4px 0;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 4px;
            transition: width var(--transition);
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            white-space: nowrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
            text-align: center;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(37, 99, 235, 0.28);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(37, 99, 235, 0.2);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-lg {
            padding: 12px 28px;
            font-size: 0.95rem;
            border-radius: 10px;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
        }
        .hamburger span {
            width: 24px;
            height: 2px;
            background: var(--dark);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 16px 24px 24px;
            gap: 8px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }
        .mobile-menu.open {
            max-height: 520px;
            padding: 16px 24px 24px;
        }
        .mobile-menu a {
            padding: 10px 0;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--bg-slate);
        }
        .mobile-menu a:hover {
            color: var(--primary);
        }
        .mobile-menu .btn {
            margin-top: 10px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            padding-top: 120px;
            padding-bottom: 0;
            background: var(--bg-light);
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb-wrap {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            padding: 14px 0;
        }
        .breadcrumb-wrap a {
            color: var(--text-secondary);
        }
        .breadcrumb-wrap a:hover {
            color: var(--primary);
        }
        .breadcrumb-sep {
            color: var(--text-muted);
        }
        .breadcrumb-current {
            color: var(--primary);
            font-weight: 500;
        }

        /* ===== Category Hero ===== */
        .category-hero {
            padding: 40px 0 48px;
            background: var(--bg-light);
            border-bottom: 1px solid var(--border);
        }
        .category-hero-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.6fr;
            gap: 40px;
            align-items: center;
        }
        .category-hero h1 {
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 700;
            color: var(--dark);
            letter-spacing: -0.01em;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .category-hero h1 span {
            color: var(--primary);
        }
        .category-hero-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.75;
        }
        .category-hero-stats {
            display: flex;
            flex-direction: column;
            gap: 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }
        .stat-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 8px 0;
            border-bottom: 1px solid var(--bg-slate);
        }
        .stat-row:last-child {
            border-bottom: none;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .stat-value {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
        }
        .stat-value.primary {
            color: var(--primary);
        }

        /* ===== Category Entry / Quick Nav ===== */
        .entry-section {
            background: var(--bg);
            padding: 40px 0;
            border-bottom: 1px solid var(--border);
        }
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 12px;
        }
        .entry-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            padding: 18px 12px;
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            text-align: center;
            transition: all var(--transition);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
        }
        .entry-card:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        .entry-card .entry-icon {
            font-size: 1.5rem;
            line-height: 1;
        }
        .entry-card.active-entry {
            border-color: var(--primary);
            background: #EFF4FF;
            color: var(--primary);
        }

        /* ===== Guide List Section ===== */
        .guide-list-section {
            background: var(--bg);
        }
        .guide-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .guide-card {
            display: grid;
            grid-template-columns: 240px 1fr auto;
            gap: 20px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            align-items: center;
        }
        .guide-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
            border-color: #CBD5E1;
        }
        .guide-card-img {
            width: 240px;
            height: 150px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .guide-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .guide-card-body {
            flex: 1;
            min-width: 0;
        }
        .guide-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 8px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 3px 12px;
            border-radius: var(--radius-badge);
            font-size: 0.75rem;
            font-weight: 500;
            line-height: 1.4;
            background: #EFF4FF;
            color: var(--primary);
        }
        .badge-warning {
            background: #FFF4E8;
            color: var(--warning);
        }
        .badge-success {
            background: #E8F7EE;
            color: var(--success);
        }
        .guide-card-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 6px;
            transition: color var(--transition);
        }
        .guide-card:hover .guide-card-title {
            color: var(--primary);
        }
        .guide-card-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .guide-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 8px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .guide-card-action {
            flex-shrink: 0;
            align-self: center;
        }
        .btn-read {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.85rem;
            background: var(--bg-slate);
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-read:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }

        /* ===== Tags Section ===== */
        .tags-section {
            background: var(--bg-light);
            padding: 40px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .tags-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-badge);
            font-size: 0.85rem;
            font-weight: 500;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition);
        }
        .tag-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #EFF4FF;
        }
        .tag-chip.hot {
            border-color: var(--warning);
            color: var(--warning);
            background: #FFF4E8;
        }

        /* ===== Featured Section ===== */
        .featured-section {
            background: var(--bg);
        }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .featured-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .featured-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .featured-card-img {
            width: 100%;
            height: 180px;
            overflow: hidden;
        }
        .featured-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .featured-card:hover .featured-card-img img {
            transform: scale(1.03);
        }
        .featured-card-body {
            padding: 20px;
        }
        .featured-card-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 8px;
            transition: color var(--transition);
        }
        .featured-card:hover .featured-card-title {
            color: var(--primary);
        }
        .featured-card-excerpt {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .featured-card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 12px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* ===== Topics Section ===== */
        .topics-section {
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .topic-card {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .topic-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
            border-color: #CBD5E1;
        }
        .topic-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: #EFF4FF;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            flex-shrink: 0;
        }
        .topic-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 4px;
        }
        .topic-info p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--dark);
            padding: 56px 0;
        }
        .cta-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-text h2 {
            font-size: clamp(20px, 2.5vw, 28px);
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .cta-text p {
            color: #CBD5E1;
            font-size: 0.9rem;
            max-width: 480px;
        }
        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn-cta-light {
            background: #fff;
            color: var(--dark);
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-cta-light:hover {
            background: var(--bg-slate);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(255,255,255,0.15);
        }
        .btn-cta-ghost {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255,255,255,0.4);
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-cta-ghost:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            transform: translateY(-1px);
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            background: var(--bg);
        }
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            background: #fff;
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark);
            user-select: none;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--text-muted);
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 20px 18px;
        }

        /* ===== Footer ===== */
        footer {
            background: var(--dark);
            color: #CBD5E1;
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-col h3 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: #94A3B8;
            max-width: 300px;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: #94A3B8;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-copy {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #64748B;
        }
        .footer-copy a {
            color: #94A3B8;
            transition: color var(--transition);
        }
        .footer-copy a:hover {
            color: var(--primary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .category-hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .entry-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-card {
                grid-template-columns: 180px 1fr;
            }
            .guide-card-action {
                grid-column: 1 / -1;
                justify-self: start;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            section {
                padding: var(--section-pad-mobile) 0;
            }
            .nav-links {
                display: none;
            }
            .nav-cta .btn-outline {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu {
                display: flex;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .entry-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
            }
            .guide-card {
                grid-template-columns: 1fr;
                gap: 12px;
                padding: 12px;
            }
            .guide-card-img {
                width: 100%;
                height: 180px;
            }
            .guide-card-action {
                grid-column: 1;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .topics-grid {
                grid-template-columns: 1fr;
            }
            .cta-wrap {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .breadcrumb-section {
                padding-top: 100px;
            }
            .category-hero {
                padding: 24px 0 32px;
            }
        }
        @media (max-width: 519px) {
            .entry-grid {
                grid-template-columns: 1fr 1fr;
                gap: 6px;
            }
            .entry-card {
                padding: 12px 8px;
                font-size: 0.78rem;
            }
            .featured-card-img {
                height: 160px;
            }
            .btn-lg {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .btn-cta-light,
            .btn-cta-ghost {
                justify-content: center;
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --dark: #0F172A;
  --bg: #FFFFFF;
  --bg-light: #F8FAFC;
  --bg-slate: #F1F5F9;
  --text: #1E293B;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --border: #E2E8F0;
  --success: #16A34A;
  --warning: #EA580C;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 8px 20px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);
  --transition: 0.2s ease;
  --container-max: 1200px;
  --section-pad-desktop: 72px;
  --section-pad-mobile: 48px;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}
img {
  max-width: 100%;
  display: block;
}
button, input {
  font-family: inherit;
  outline: none;
  border: none;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}
section {
  padding: var(--section-pad-desktop) 0;
}
.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.7;
  margin-top: 12px;
}
.section-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.section-head {
  margin-bottom: 36px;
}
.section-head.center {
  text-align: center;
}
.section-head.center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}
/* Header / Nav */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
header.scrolled {
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  white-space: nowrap;
  letter-spacing: -0.02em;
}
.logo span {
  color: var(--primary);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.nav-links a {
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 4px;
  transition: width var(--transition);
}
.nav-links a:hover {
  color: var(--primary);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-links a.active {
  color: var(--primary);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
  text-align: center;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.28);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.2);
}
.btn-outline:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-lg {
  padding: 12px 28px;
  font-size: 0.95rem;
  border-radius: 10px;
}
.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 4px;
  transition: all var(--transition);
}
.mobile-menu {
  display: none;
  flex-direction: column;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 24px;
  gap: 8px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.mobile-menu.open {
  max-height: 520px;
  padding: 16px 24px 24px;
}
.mobile-menu a {
  padding: 10px 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--bg-slate);
}
.mobile-menu a:hover {
  color: var(--primary);
}
.mobile-menu .btn {
  margin-top: 10px;
}
/* Page header */
.page-header {
  padding-top: 136px;
  padding-bottom: 40px;
  background: linear-gradient(180deg, #EFF4FF 0%, #F8FAFC 100%);
}
.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.breadcrumb a {
  color: var(--text-secondary);
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .sep {
  margin: 0 8px;
}
.page-header h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.page-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 680px;
  line-height: 1.7;
}
/* Coupon wall hero */
.coupon-hero {
  background: var(--bg);
  padding: 48px 0;
}
.coupon-wall {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 24px;
}
.coupon-main {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--dark);
  min-height: 380px;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}
.coupon-main:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
}
.coupon-main .bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}
.coupon-main .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 20%, rgba(15,23,42,0.92) 80%);
}
.coupon-main .coupon-content {
  position: relative;
  z-index: 1;
  padding: 28px 30px;
  width: 100%;
}
.coupon-main .coupon-tag {
  display: inline-block;
  background: var(--warning);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-badge);
  margin-bottom: 10px;
}
.coupon-main h2 {
  font-size: clamp(22px, 2.5vw, 30px);
  font-weight: 700;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 10px;
}
.coupon-main p {
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
  max-width: 500px;
  margin-bottom: 18px;
  line-height: 1.65;
}
.coupon-main .btn {
  background: var(--primary);
  color: #fff;
  border: none;
}
.coupon-main .btn:hover {
  background: var(--primary-hover);
}
.coupon-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.coupon-small {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all var(--transition);
}
.coupon-small:hover {
  background: #fff;
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}
.coupon-small .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}
.coupon-small .info h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 4px;
}
.coupon-small .info p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin: 0;
}
/* Category entry */
.category-entry {
  background: var(--bg-slate);
  padding: 48px 0;
}
.category-entry h2 {
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
}
.category-entry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.category-entry-card {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 20px;
  border: 1px solid var(--border);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 14px;
}
.category-entry-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}
.category-entry-card .ce-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: #EBF0FF;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.category-entry-card .ce-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 2px;
}
.category-entry-card .ce-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}
/* News list */
.news-list-section {
  background: var(--bg);
}
.news-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 32px;
}
.news-toolbar h2 {
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 700;
  color: var(--dark);
}
.news-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.filter-tag {
  padding: 6px 16px;
  border-radius: var(--radius-badge);
  background: var(--bg-slate);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
}
.filter-tag:hover {
  background: #EBF0FF;
  color: var(--primary);
}
.filter-tag.active {
  background: var(--primary);
  color: #fff;
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.news-item {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 20px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 18px 22px;
  transition: all var(--transition);
}
.news-item:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
  border-color: #D1DBEA;
}
.news-date {
  text-align: center;
  background: var(--bg-slate);
  border-radius: 10px;
  padding: 8px 10px;
}
.news-date .day {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.2;
}
.news-date .month {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.news-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
  line-height: 1.4;
}
.news-body p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0;
  max-width: 640px;
}
.news-item .btn-sm {
  white-space: nowrap;
}
/* Tags */
.tags-section {
  background: var(--bg-light);
  padding: 48px 0;
}
.tags-section h2 {
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag-cloud .tag {
  padding: 8px 18px;
  border-radius: var(--radius-badge);
  background: #EBF0FF;
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition);
  cursor: default;
}
.tag-cloud .tag:hover {
  background: var(--primary);
  color: #fff;
}
.tag-cloud .tag.warm {
  background: #FFF4EB;
  color: var(--warning);
}
.tag-cloud .tag.warm:hover {
  background: var(--warning);
  color: #fff;
}
.tag-cloud .tag.green {
  background: #E8F7EE;
  color: var(--success);
}
.tag-cloud .tag.green:hover {
  background: var(--success);
  color: #fff;
}
/* Editor picks */
.editor-picks {
  background: var(--bg);
}
.editor-picks h2 {
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
}
.editor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.editor-card {
  border-radius: var(--radius-card);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.editor-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}
.editor-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 0;
}
.editor-card .editor-body {
  padding: 18px 20px;
}
.editor-card .editor-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--warning);
  background: #FFF4EB;
  padding: 3px 10px;
  border-radius: var(--radius-badge);
  margin-bottom: 8px;
}
.editor-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.4;
  margin-bottom: 8px;
}
.editor-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}
/* Upcoming matches */
.matches-section {
  background: var(--bg-slate);
}
.matches-section h2 {
  font-size: clamp(20px, 2.5vw, 26px);
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
}
.match-table {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.match-row {
  display: grid;
  grid-template-columns: 120px 1fr 120px;
  gap: 16px;
  align-items: center;
  background: #fff;
  border-radius: var(--radius-card);
  padding: 14px 18px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.match-row:hover {
  box-shadow: var(--shadow-card);
}
.match-row .match-league {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary);
  background: #EBF0FF;
  padding: 4px 10px;
  border-radius: var(--radius-badge);
  text-align: center;
}
.match-row .match-teams {
  text-align: center;
  font-weight: 600;
  color: var(--dark);
  font-size: 0.95rem;
}
.match-row .match-time {
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-align: right;
}
/* Stats bar */
.stats-bar-section {
  background: var(--dark);
  padding: 56px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
}
.stat-number {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.stat-label {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
  margin-top: 4px;
}
/* CTA section */
.cta-section {
  background: linear-gradient(135deg, #1E3A8A 0%, #2563EB 50%, #1D4ED8 100%);
  padding: 64px 0;
}
.cta-box {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
}
.cta-box h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 10px;
}
.cta-box p {
  color: rgba(255,255,255,0.8);
  font-size: 0.95rem;
  max-width: 500px;
  line-height: 1.65;
}
.cta-box .btn {
  background: #fff;
  color: var(--primary);
  font-weight: 700;
  padding: 14px 32px;
  font-size: 1rem;
  white-space: nowrap;
}
.cta-box .btn:hover {
  background: var(--bg-slate);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
/* Footer */
footer {
  background: var(--dark);
  color: rgba(255,255,255,0.75);
  padding: 56px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 14px;
}
.footer-col p {
  font-size: 0.88rem;
  line-height: 1.7;
  max-width: 300px;
}
.footer-col a {
  display: block;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
  padding: 5px 0;
  transition: color var(--transition);
}
.footer-col a:hover {
  color: #fff;
}
.footer-copy {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
}
.footer-copy a {
  color: rgba(255,255,255,0.65);
  margin: 0 6px;
}
.footer-copy a:hover {
  color: #fff;
}
/* Responsive */
@media (max-width: 1024px) {
  .coupon-wall {
    grid-template-columns: 1fr;
  }
  .editor-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .category-entry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cta-box {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-cta .btn {
    font-size: 0.8rem;
    padding: 8px 14px;
  }
  .hamburger {
    display: flex;
  }
  .mobile-menu {
    display: flex;
  }
  .page-header {
    padding-top: 120px;
    padding-bottom: 28px;
  }
  .page-header h1 {
    font-size: 28px;
  }
  section {
    padding: 48px 0;
  }
  .coupon-main {
    min-height: 280px;
  }
  .news-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .news-item .btn-sm {
    align-self: flex-start;
  }
  .editor-grid {
    grid-template-columns: 1fr;
  }
  .category-entry-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .match-row {
    grid-template-columns: 1fr;
    gap: 8px;
    text-align: center;
  }
  .match-row .match-time {
    text-align: center;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .nav-wrap {
    height: 56px;
  }
  .logo {
    font-size: 1.05rem;
  }
  .nav-cta .btn {
    padding: 7px 12px;
    font-size: 0.75rem;
  }
  .page-header {
    padding-top: 100px;
  }
  .page-header h1 {
    font-size: 24px;
  }
  .coupon-main {
    min-height: 240px;
  }
  .coupon-main .coupon-content {
    padding: 18px 20px;
  }
  .coupon-main h2 {
    font-size: 18px;
  }
  .coupon-main p {
    font-size: 0.85rem;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .stat-number {
    font-size: 28px;
  }
}

/* roulang page: category3 */
:root {
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --dark: #0F172A;
  --bg: #FFFFFF;
  --bg-light: #F8FAFC;
  --bg-slate: #F1F5F9;
  --text: #1E293B;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --border: #E2E8F0;
  --success: #16A34A;
  --warning: #EA580C;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 8px 20px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);
  --transition: 0.2s ease;
  --container-max: 1200px;
  --section-pad-desktop: 72px;
  --section-pad-mobile: 48px;
}
html {
  scroll-behavior: smooth;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}
img {
  max-width: 100%;
  display: block;
}
button, input {
  font-family: inherit;
  outline: none;
  border: none;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}
section {
  padding: var(--section-pad-desktop) 0;
}
.section-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.7;
  margin-top: 12px;
}
.section-head {
  margin-bottom: 36px;
}
.section-head.center {
  text-align: center;
}
.section-head.center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* ===== Header / Nav ===== */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
header.scrolled {
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  white-space: nowrap;
  letter-spacing: -0.02em;
}
.logo span {
  color: var(--primary);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.nav-links a {
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 4px;
  transition: width var(--transition);
}
.nav-links a:hover {
  color: var(--primary);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-links a.active {
  color: var(--primary);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
  text-align: center;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.28);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.2);
}
.btn-outline:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-lg {
  padding: 12px 28px;
  font-size: 0.95rem;
  border-radius: 10px;
}
.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 4px;
  transition: all var(--transition);
}
.mobile-menu {
  display: none;
  flex-direction: column;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 24px;
  gap: 8px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.mobile-menu.open {
  max-height: 560px;
  padding: 16px 24px 24px;
}
.mobile-menu a {
  padding: 10px 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--bg-slate);
}
.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--primary);
}
.mobile-menu .btn {
  margin-top: 10px;
}

/* ===== Breadcrumb ===== */
.breadcrumb-section {
  padding-top: 120px;
  padding-bottom: 0;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 16px 0;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--text-secondary);
  transition: color var(--transition);
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .sep {
  color: var(--text-muted);
  user-select: none;
}
.breadcrumb .current {
  color: var(--primary);
  font-weight: 500;
}

/* ===== Category Hero (Document Help Center Style) ===== */
.cat-hero {
  padding: 48px 0 56px;
  background: var(--bg-light);
}
.cat-hero-content {
  max-width: 800px;
}
.cat-hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.cat-hero p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 680px;
  margin-bottom: 32px;
}
.search-box {
  display: flex;
  align-items: center;
  gap: 0;
  max-width: 600px;
  width: 100%;
  margin-bottom: 20px;
}
.search-box input {
  flex: 1;
  padding: 14px 18px;
  border: 1.5px solid var(--border);
  border-right: none;
  border-radius: var(--radius-btn) 0 0 var(--radius-btn);
  background: #fff;
  font-size: 0.95rem;
  color: var(--text);
  transition: border-color var(--transition);
}
.search-box input:focus {
  border-color: var(--primary);
}
.search-box input::placeholder {
  color: var(--text-muted);
}
.search-box button {
  padding: 14px 24px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 0 var(--radius-btn) var(--radius-btn) 0;
  cursor: pointer;
  transition: background var(--transition);
  white-space: nowrap;
}
.search-box button:hover {
  background: var(--primary-hover);
}
.hot-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hot-chips a {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-badge);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.hot-chips a:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: #EFF4FF;
}

/* ===== Category Entry Links ===== */
.category-entry {
  padding: 56px 0 48px;
}
.entry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.entry-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  transition: all var(--transition);
}
.entry-card:hover {
  border-color: var(--primary);
  background: #EFF4FF;
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}
.entry-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}
.entry-info {
  min-width: 0;
}
.entry-info strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.entry-info span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===== Review List ===== */
.review-list-section {
  padding: 48px 0 64px;
}
.review-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.review-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: all var(--transition);
}
.review-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}
.review-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--bg-slate);
}
.review-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.review-card:hover .review-thumb img {
  transform: scale(1.03);
}
.review-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--primary);
  color: #fff;
  padding: 4px 10px;
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: var(--radius-badge);
  letter-spacing: 0.02em;
}
.review-body {
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.review-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.4;
  margin-bottom: 8px;
}
.review-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.review-summary {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}
.review-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--bg-slate);
}
.review-action a.read-more {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}
.review-action a.read-more:hover {
  color: var(--primary-hover);
  gap: 10px;
}
.review-action .review-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.list-more {
  text-align: center;
  margin-top: 36px;
}

/* ===== Editor Picks ===== */
.editor-section {
  padding: 56px 0 64px;
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.picks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.pick-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px;
  transition: all var(--transition);
}
.pick-card:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.pick-rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.pick-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.4;
  margin-bottom: 8px;
}
.pick-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Topic Cards ===== */
.topic-section {
  padding: 56px 0 64px;
}
.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.topic-card {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  box-shadow: var(--shadow-card);
}
.topic-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.topic-card:hover img {
  transform: scale(1.05);
}
.topic-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,23,42,0.1) 0%, rgba(15,23,42,0.82) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
  transition: background var(--transition);
}
.topic-card:hover .topic-overlay {
  background: linear-gradient(180deg, rgba(15,23,42,0.15) 0%, rgba(37,99,235,0.88) 100%);
}
.topic-overlay h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.topic-overlay span {
  color: rgba(255,255,255,0.8);
  font-size: 0.78rem;
}

/* ===== Stats Band ===== */
.stats-section {
  padding: 48px 0;
  background: var(--dark);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {
  padding: 16px 12px;
}
.stat-number {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.stat-number span {
  font-size: 0.5em;
  font-weight: 500;
  margin-left: 4px;
  color: var(--text-muted);
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ===== Subscribe CTA ===== */
.cta-section {
  padding: 64px 0;
  background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-text h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 8px;
}
.cta-text p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.85);
  max-width: 480px;
  line-height: 1.6;
}
.cta-form {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.cta-form input {
  min-width: 260px;
  padding: 12px 16px;
  border-radius: var(--radius-btn);
  background: #fff;
  color: var(--text);
  font-size: 0.9rem;
  border: 2px solid transparent;
  transition: border-color var(--transition);
}
.cta-form input:focus {
  border-color: #93C5FD;
}
.cta-form button {
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  background: var(--dark);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background var(--transition);
}
.cta-form button:hover {
  background: #1E293B;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 64px 0 72px;
  background: var(--bg-light);
}
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: #fff;
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--dark);
  transition: color var(--transition);
}
.faq-question:hover {
  color: var(--primary);
}
.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition);
  font-size: 1.2rem;
  color: var(--text-muted);
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.open .faq-answer {
  max-height: 320px;
}
.faq-answer-inner {
  padding: 0 22px 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Footer ===== */
footer {
  background: var(--dark);
  color: var(--text-muted);
  padding: 56px 0 24px;
  font-size: 0.85rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(226,232,240,0.1);
}
.footer-col h3 {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.footer-col p {
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 380px;
}
.footer-col a {
  display: block;
  padding: 6px 0;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-col a:hover {
  color: var(--primary);
}
.footer-copy {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 20px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.footer-copy a {
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-copy a:hover {
  color: var(--primary);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  section {
    padding: 56px 0;
  }
  .entry-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .review-grid {
    grid-template-columns: 1fr;
  }
  .picks-grid,
  .topic-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-cta .btn {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .mobile-menu {
    display: flex;
  }
  .mobile-menu:not(.open) {
    padding-top: 0;
    padding-bottom: 0;
    border-bottom: none;
  }
  .breadcrumb-section {
    padding-top: 84px;
  }
  .cat-hero {
    padding: 32px 0 40px;
  }
  .cat-hero h1 {
    font-size: 28px;
  }
  .section-title {
    font-size: 24px;
  }
  section {
    padding: 48px 0;
  }
  .entry-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .entry-card {
    padding: 14px 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .picks-grid,
  .topic-grid {
    grid-template-columns: 1fr;
  }
  .cta-inner {
    flex-direction: column;
    text-align: center;
  }
  .cta-form {
    flex-direction: column;
    width: 100%;
    max-width: 400px;
  }
  .cta-form input {
    min-width: 0;
    width: 100%;
  }
  .cta-form button {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .footer-col:first-child {
    grid-column: 1 / -1;
  }
  .review-body h3 {
    font-size: 0.95rem;
  }
  .review-thumb {
    aspect-ratio: 16 / 9;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .entry-grid {
    grid-template-columns: 1fr;
  }
  .review-grid {
    gap: 16px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .stat-number {
    font-size: 26px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .footer-col:first-child {
    grid-column: auto;
  }
  .hot-chips {
    gap: 6px;
  }
  .hot-chips a {
    font-size: 0.72rem;
    padding: 5px 10px;
  }
  .search-box {
    flex-direction: column;
  }
  .search-box input {
    border-radius: var(--radius-btn) var(--radius-btn) 0 0;
    border-right: 1.5px solid var(--border);
    border-bottom: none;
    width: 100%;
  }
  .search-box button {
    border-radius: 0 0 var(--radius-btn) var(--radius-btn);
    width: 100%;
  }
}

/* roulang page: category4 */
:root {
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --dark: #0F172A;
  --bg: #FFFFFF;
  --bg-light: #F8FAFC;
  --bg-slate: #F1F5F9;
  --text: #1E293B;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --border: #E2E8F0;
  --success: #16A34A;
  --warning: #EA580C;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 8px 20px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);
  --transition: 0.2s ease;
  --container-max: 1200px;
  --section-pad-desktop: 72px;
  --section-pad-mobile: 48px;
}

html {
  scroll-behavior: smooth;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

img {
  max-width: 100%;
  display: block;
}

button,
input {
  font-family: inherit;
  outline: none;
  border: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

section {
  padding: var(--section-pad-desktop) 0;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.7;
  margin-top: 12px;
}

.section-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.section-head {
  margin-bottom: 36px;
}

.section-head.center {
  text-align: center;
}

.section-head.center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* ===== Header / Nav ===== */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}

header.scrolled {
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  white-space: nowrap;
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-links a {
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 4px;
  transition: width var(--transition);
}

.nav-links a:hover {
  color: var(--primary);
}

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

.nav-links a.active {
  color: var(--primary);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.28);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.2);
}

.btn-outline:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn-lg {
  padding: 12px 28px;
  font-size: 0.95rem;
  border-radius: 10px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 4px;
  transition: all var(--transition);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  flex-direction: column;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 24px;
  gap: 8px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.mobile-menu.open {
  max-height: 520px;
  padding: 16px 24px 24px;
}

.mobile-menu a {
  padding: 10px 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--bg-slate);
}

.mobile-menu a:hover {
  color: var(--primary);
}

.mobile-menu .btn {
  margin-top: 10px;
  width: 100%;
}

/* ===== Breadcrumb + H1 ===== */
.page-header-section {
  padding-top: 140px;
  padding-bottom: 48px;
  background: linear-gradient(180deg, #EFF4FF 0%, #F8FAFC 100%);
  border-bottom: 1px solid var(--border);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-secondary);
}

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

.breadcrumb span {
  color: var(--text-muted);
}

.breadcrumb .current {
  color: var(--primary);
  font-weight: 500;
}

.page-header-section h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin-bottom: 12px;
}

.page-header-section .page-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 780px;
  line-height: 1.75;
}

/* ===== Team/Player Archive Grid ===== */
.archive-section {
  padding: 56px 0 40px;
  background: var(--bg);
}

.archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 28px;
}

.archive-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.archive-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.archive-card .card-img {
  position: relative;
  height: 190px;
  overflow: hidden;
  background: var(--bg-slate);
}

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

.archive-card:hover .card-img img {
  transform: scale(1.04);
}

.archive-card .card-img::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(to top, rgba(0,0,0,0.55), transparent);
  pointer-events: none;
}

.archive-card .card-img .role-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  background: rgba(15, 23, 42, 0.85);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-badge);
  letter-spacing: 0.02em;
}

.archive-card .card-img .team-name-overlay {
  position: absolute;
  bottom: 10px;
  left: 14px;
  z-index: 2;
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}

.archive-card .card-body {
  padding: 18px 18px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.archive-card .card-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
  line-height: 1.35;
}

.archive-card .card-body .card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.archive-card .card-body .card-meta .game-tag {
  background: #DBEAFE;
  color: var(--primary);
  padding: 2px 10px;
  border-radius: var(--radius-badge);
  font-weight: 500;
  font-size: 0.75rem;
}

.archive-card .card-body p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 14px;
}

.archive-card .card-body .card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.archive-card .card-body .card-bottom .date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.archive-card .card-body .card-bottom .read-more {
  font-size: 0.82rem;
  color: var(--primary);
  font-weight: 600;
  white-space: nowrap;
}

.archive-card .card-body .card-bottom .read-more:hover {
  color: var(--primary-hover);
}

/* ===== Filter Tags ===== */
.filter-tags-section {
  padding: 0 0 32px;
  background: var(--bg);
}

.filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.filter-tags .tag-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-right: 4px;
}

.filter-tag {
  padding: 6px 16px;
  border-radius: var(--radius-badge);
  font-size: 0.82rem;
  font-weight: 500;
  background: var(--bg-slate);
  color: var(--text-secondary);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.filter-tag:hover {
  background: #DBEAFE;
  color: var(--primary);
  border-color: var(--primary);
}

.filter-tag.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ===== Stats Bar ===== */
.stats-bar-section {
  padding: 56px 0;
  background: var(--dark);
}

.stats-bar-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item .stat-number {
  font-size: 2.4rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.stat-item .stat-number .stat-suffix {
  color: var(--primary);
  font-size: 1.6rem;
}

.stat-item .stat-label {
  font-size: 0.85rem;
  color: #94A3B8;
  margin-top: 6px;
}

/* ===== Editor Picks ===== */
.editor-picks-section {
  padding: 56px 0;
  background: var(--bg-light);
}

.editor-picks-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 28px;
}

.pick-card {
  display: flex;
  gap: 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 16px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  align-items: center;
}

.pick-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.pick-card .pick-img {
  width: 100px;
  height: 100px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-slate);
}

.pick-card .pick-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pick-card .pick-content h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
  line-height: 1.35;
}

.pick-card .pick-content p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 8px;
}

.pick-card .pick-content .pick-tag {
  font-size: 0.72rem;
  background: #FEF3C7;
  color: #D97706;
  padding: 2px 10px;
  border-radius: var(--radius-badge);
  font-weight: 600;
}

/* ===== Related Topics ===== */
.topics-section {
  padding: 56px 0;
  background: var(--bg);
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 28px;
}

.topic-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  transition: all var(--transition);
}

.topic-card:hover {
  background: #fff;
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.topic-card .topic-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: #DBEAFE;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 14px;
}

.topic-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
  line-height: 1.35;
}

.topic-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 64px 0;
  background: linear-gradient(135deg, #1E3A5F 0%, #0F172A 100%);
}

.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-box .cta-text h2 {
  font-size: clamp(22px, 2.5vw, 30px);
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.cta-box .cta-text p {
  font-size: 0.95rem;
  color: #CBD5E1;
  max-width: 520px;
  line-height: 1.65;
}

.cta-box .cta-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.cta-box .btn-primary {
  background: var(--primary);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.4);
}

.cta-box .btn-primary:hover {
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.5);
}

.cta-box .btn-white-outline {
  background: transparent;
  border: 1.5px solid #E2E8F0;
  color: #fff;
}

.cta-box .btn-white-outline:hover {
  background: #fff;
  color: var(--dark);
  border-color: #fff;
  transform: translateY(-1px);
}

/* ===== FAQ ===== */
.faq-section {
  padding: 56px 0 72px;
  background: var(--bg-light);
}

.faq-list {
  max-width: 820px;
  margin: 28px auto 0;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.faq-item:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-slate);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
  transition: all var(--transition);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 20px;
}

.faq-item.open .faq-answer {
  max-height: 200px;
  padding: 0 20px 18px;
}

.faq-item.open .faq-icon {
  background: var(--primary);
  color: #fff;
  transform: rotate(45deg);
}

.faq-answer p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===== Footer ===== */
footer {
  background: var(--dark);
  color: #94A3B8;
  padding: 56px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr 0.8fr;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-col h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.footer-col p {
  font-size: 0.85rem;
  line-height: 1.7;
  color: #94A3B8;
  max-width: 340px;
}

.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: #94A3B8;
  padding: 5px 0;
  transition: color var(--transition);
}

.footer-col a:hover {
  color: #fff;
}

.footer-copy {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 20px;
  text-align: center;
  font-size: 0.8rem;
  color: #64748B;
}

.footer-copy a {
  color: #94A3B8;
  text-decoration: none;
}

.footer-copy a:hover {
  color: #fff;
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .nav-links {
    gap: 18px;
    font-size: 0.85rem;
  }
  .archive-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-bar-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .editor-picks-grid {
    grid-template-columns: 1fr;
  }
  .topics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

@media (max-width: 767px) {
  .nav-links {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .mobile-menu {
    display: flex;
  }
  .mobile-menu:not(.open) {
    max-height: 0;
    padding: 0 24px;
  }
  section {
    padding: 48px 0;
  }
  .page-header-section {
    padding-top: 110px;
    padding-bottom: 36px;
  }
  .archive-grid {
    grid-template-columns: 1fr;
  }
  .stats-bar-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .stat-item .stat-number {
    font-size: 1.8rem;
  }
  .editor-picks-grid {
    grid-template-columns: 1fr;
  }
  .topics-grid {
    grid-template-columns: 1fr;
  }
  .cta-box {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .filter-tags {
    gap: 8px;
  }
  .filter-tag {
    padding: 5px 12px;
    font-size: 0.78rem;
  }
}

@media (max-width: 519px) {
  .container {
    padding: 0 16px;
  }
  .page-header-section h1 {
    font-size: 1.7rem;
  }
  .archive-card .card-img {
    height: 170px;
  }
  .stats-bar-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .pick-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .pick-card .pick-img {
    width: 100%;
    height: 160px;
  }
  .cta-box .cta-actions {
    flex-direction: column;
    width: 100%;
  }
  .cta-box .btn {
    width: 100%;
  }
}

/* roulang page: category5 */
:root {
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --dark: #0F172A;
  --bg: #FFFFFF;
  --bg-light: #F8FAFC;
  --bg-slate: #F1F5F9;
  --text: #1E293B;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --border: #E2E8F0;
  --success: #16A34A;
  --warning: #EA580C;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 8px 20px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);
  --transition: 0.2s ease;
  --container-max: 1200px;
  --section-pad-desktop: 72px;
  --section-pad-mobile: 48px;
}
/* roulang page: game-library */
:root {
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --dark: #0F172A;
  --bg: #FFFFFF;
  --bg-light: #F8FAFC;
  --bg-slate: #F1F5F9;
  --text: #1E293B;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --border: #E2E8F0;
  --success: #16A34A;
  --warning: #EA580C;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 8px 20px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);
  --transition: 0.2s ease;
  --container-max: 1200px;
  --section-pad-desktop: 72px;
  --section-pad-mobile: 48px;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
*, *::before, *::after {
  box-sizing: border-box;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}
img {
  max-width: 100%;
  display: block;
}
button, input {
  font-family: inherit;
  outline: none;
  border: none;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}
section {
  padding: var(--section-pad-desktop) 0;
}
.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.7;
  margin-top: 12px;
}
.section-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.section-head {
  margin-bottom: 36px;
}
.section-head.center {
  text-align: center;
}
.section-head.center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}
/* ===== Header / Nav ===== */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
header.scrolled {
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  white-space: nowrap;
  letter-spacing: -0.02em;
}
.logo span {
  color: var(--primary);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.nav-links a {
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 4px;
  transition: width var(--transition);
}
.nav-links a:hover {
  color: var(--primary);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-links a.active {
  color: var(--primary);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
  text-align: center;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.28);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.2);
}
.btn-outline:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-lg {
  padding: 12px 28px;
  font-size: 0.95rem;
  border-radius: 10px;
}
.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 4px;
  transition: all var(--transition);
}
.mobile-menu {
  display: none;
  flex-direction: column;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 24px;
  gap: 8px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.mobile-menu.open {
  max-height: 520px;
  padding: 16px 24px 24px;
}
.mobile-menu a {
  padding: 10px 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--bg-slate);
}
.mobile-menu a:hover {
  color: var(--primary);
}
.mobile-menu .btn {
  margin-top: 10px;
}
/* ===== Breadcrumb ===== */
.breadcrumb-section {
  padding-top: 112px;
  padding-bottom: 32px;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.breadcrumb a {
  color: var(--text-secondary);
  transition: color var(--transition);
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .sep {
  color: var(--text-muted);
  user-select: none;
}
.breadcrumb .current {
  color: var(--primary);
  font-weight: 500;
}
.page-h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}
.page-h1-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 720px;
  line-height: 1.7;
}
/* ===== Category Nav ===== */
.category-nav-section {
  padding: 48px 0;
  background: var(--bg);
}
.category-nav-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}
.category-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 18px 12px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-align: center;
  transition: all var(--transition);
}
.category-nav-item:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}
.category-nav-item .icon {
  font-size: 1.5rem;
  line-height: 1;
}
.category-nav-item.current {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
/* ===== Game Grid ===== */
.game-grid-section {
  background: var(--bg-light);
}
.game-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.game-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.game-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: #c7d7f5;
}
.game-card-img {
  height: 180px;
  overflow: hidden;
  position: relative;
  background: var(--bg-slate);
}
.game-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.game-card:hover .game-card-img img {
  transform: scale(1.03);
}
.game-card-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.game-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.game-card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 14px;
  flex: 1;
}
.game-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-badge);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.3;
  background: var(--bg-slate);
  color: var(--text-secondary);
}
.badge.primary {
  background: #E8F0FE;
  color: var(--primary);
}
.badge.success {
  background: #E8F5EC;
  color: var(--success);
}
.badge.warning {
  background: #FFF4EB;
  color: var(--warning);
}
/* ===== Tags Section ===== */
.tags-section {
  padding: 48px 0;
  background: var(--bg);
}
.tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag-btn {
  padding: 8px 16px;
  border-radius: var(--radius-badge);
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--bg-light);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.tag-btn:hover {
  background: #E8F0FE;
  border-color: var(--primary);
  color: var(--primary);
}
.tag-btn.active-tag {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
/* ===== Featured Games ===== */
.featured-section {
  background: var(--bg-light);
}
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.featured-card {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  min-height: 220px;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}
.featured-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}
.featured-card-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.featured-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,23,42,0.1) 30%, rgba(15,23,42,0.75) 100%);
}
.featured-card-content {
  position: relative;
  z-index: 2;
  padding: 20px;
  color: #fff;
  width: 100%;
}
.featured-card-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 6px;
  color: #fff;
}
.featured-card-content p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.85);
  margin: 0 0 10px;
  line-height: 1.6;
}
.featured-card-content .badge {
  background: rgba(255,255,255,0.25);
  color: #fff;
  backdrop-filter: blur(4px);
}
/* ===== Stats Section ===== */
.stats-section {
  background: var(--dark);
  padding: 56px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item .stat-value {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  color: #fff;
  line-height: 1;
  margin-bottom: 8px;
}
.stat-item .stat-value span {
  color: var(--primary);
}
.stat-item .stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}
/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, #EFF4FF 0%, #DBEAFE 100%);
  padding: 64px 0;
}
.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px 36px;
  box-shadow: var(--shadow-card);
}
.cta-box-text h3 {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  color: var(--dark);
  margin: 0 0 8px;
}
.cta-box-text p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
  max-width: 480px;
}
.cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
/* ===== Footer ===== */
footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-col h3 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-col p {
  font-size: 0.85rem;
  line-height: 1.65;
  margin: 0;
}
.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 10px;
  transition: color var(--transition);
}
.footer-col a:hover {
  color: var(--primary);
}
.footer-copy {
  padding: 20px 0;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
}
.footer-copy a {
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer-copy a:hover {
  color: var(--primary);
}
/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .nav-links {
    display: none;
  }
  .nav-cta .btn-outline {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .mobile-menu {
    display: flex;
  }
  .game-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .category-nav-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  section {
    padding: 56px 0;
  }
  .breadcrumb-section {
    padding-top: 100px;
  }
}
@media (max-width: 767px) {
  .game-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .featured-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .category-nav-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .cta-box {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 20px;
  }
  section {
    padding: 48px 0;
  }
  .breadcrumb-section {
    padding-top: 92px;
    padding-bottom: 24px;
  }
  .page-h1 {
    font-size: 28px;
  }
  .container {
    padding: 0 16px;
  }
  .game-card-img {
    height: 160px;
  }
  .featured-card {
    min-height: 180px;
  }
}

/* roulang page: category6 */
:root {
        --primary: #2563EB;
        --primary-hover: #1D4ED8;
        --dark: #0F172A;
        --bg: #FFFFFF;
        --bg-light: #F8FAFC;
        --bg-slate: #F1F5F9;
        --text: #1E293B;
        --text-secondary: #475569;
        --text-muted: #94A3B8;
        --border: #E2E8F0;
        --success: #16A34A;
        --warning: #EA580C;
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-badge: 999px;
        --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
        --shadow-card-hover: 0 8px 20px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);
        --transition: 0.2s ease;
        --container-max: 1200px;
        --section-pad-desktop: 72px;
        --section-pad-mobile: 48px;
    }

    /* roulang page: community */
    :root {
        --primary: #2563EB;
        --primary-hover: #1D4ED8;
        --dark: #0F172A;
        --bg: #FFFFFF;
        --bg-light: #F8FAFC;
        --bg-slate: #F1F5F9;
        --text: #1E293B;
        --text-secondary: #475569;
        --text-muted: #94A3B8;
        --border: #E2E8F0;
        --success: #16A34A;
        --warning: #EA580C;
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-badge: 999px;
        --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
        --shadow-card-hover: 0 8px 20px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);
        --transition: 0.2s ease;
        --container-max: 1200px;
        --section-pad-desktop: 72px;
        --section-pad-mobile: 48px;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
        font-size: 16px;
        line-height: 1.7;
        color: var(--text);
        background: var(--bg);
        -webkit-font-smoothing: antialiased;
        margin: 0;
        box-sizing: border-box;
    }

    *, *::before, *::after {
        box-sizing: inherit;
    }

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

    img {
        max-width: 100%;
        display: block;
    }

    button, input, textarea {
        font-family: inherit;
        outline: none;
        border: none;
    }

    .container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
        width: 100%;
    }

    section {
        padding: var(--section-pad-desktop) 0;
    }

    .section-subtitle {
        font-size: 0.95rem;
        color: var(--text-secondary);
        max-width: 720px;
        line-height: 1.7;
        margin-top: 12px;
    }

    .section-title {
        font-size: clamp(24px, 3vw, 32px);
        font-weight: 700;
        color: var(--dark);
        line-height: 1.3;
        letter-spacing: -0.01em;
        margin: 0;
    }

    .section-head {
        margin-bottom: 36px;
    }

    .section-head.center {
        text-align: center;
    }

    .section-head.center .section-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    /* Header / Nav */
    header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(255,255,255,0.96);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--border);
        transition: box-shadow var(--transition);
    }

    header.scrolled {
        box-shadow: 0 4px 16px rgba(0,0,0,0.06);
    }

    .nav-wrap {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 64px;
        gap: 16px;
    }

    .logo {
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--dark);
        white-space: nowrap;
        letter-spacing: -0.02em;
    }

    .logo span {
        color: var(--primary);
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 28px;
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--text-secondary);
    }

    .nav-links a {
        position: relative;
        padding: 4px 0;
    }

    .nav-links a::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--primary);
        border-radius: 4px;
        transition: width var(--transition);
    }

    .nav-links a:hover {
        color: var(--primary);
    }

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

    .nav-links a.active {
        color: var(--primary);
    }

    .nav-cta {
        display: flex;
        align-items: center;
        gap: 12px;
        white-space: nowrap;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 20px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 0.9rem;
        cursor: pointer;
        transition: all var(--transition);
        line-height: 1.4;
        text-align: center;
        background: none;
        border: none;
    }

    .btn-primary {
        background: var(--primary);
        color: #fff;
    }

    .btn-primary:hover {
        background: var(--primary-hover);
        transform: translateY(-1px);
        box-shadow: 0 6px 16px rgba(37, 99, 235, 0.28);
    }

    .btn-primary:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }

    .btn-primary:active {
        transform: translateY(0);
        box-shadow: none;
    }

    .btn-outline {
        background: transparent;
        border: 1.5px solid var(--primary);
        color: var(--primary);
    }

    .btn-outline:hover {
        background: var(--primary);
        color: #fff;
        transform: translateY(-1px);
        box-shadow: 0 6px 16px rgba(37, 99, 235, 0.2);
    }

    .btn-outline:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }

    .btn-lg {
        padding: 12px 28px;
        font-size: 0.95rem;
        border-radius: 10px;
    }

    .btn-sm {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .hamburger {
        display: none;
        flex-direction: column;
        gap: 5px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 6px;
    }

    .hamburger span {
        width: 24px;
        height: 2px;
        background: var(--dark);
        border-radius: 4px;
        transition: all var(--transition);
    }

    .mobile-menu {
        display: none;
        flex-direction: column;
        background: #fff;
        border-bottom: 1px solid var(--border);
        padding: 16px 24px 24px;
        gap: 8px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
    }

    .mobile-menu.open {
        max-height: 520px;
        padding: 16px 24px 24px;
    }

    .mobile-menu a {
        padding: 10px 0;
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--text-secondary);
        border-bottom: 1px solid var(--bg-slate);
    }

    .mobile-menu a:hover {
        color: var(--primary);
    }

    .mobile-menu .btn {
        margin-top: 10px;
    }

    /* Page Header */
    .page-header {
        padding-top: 136px;
        padding-bottom: 48px;
        background: linear-gradient(180deg, #EFF4FF 0%, #F8FAFC 100%);
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.85rem;
        color: var(--text-muted);
        margin-bottom: 16px;
        flex-wrap: wrap;
    }

    .breadcrumb a {
        color: var(--text-secondary);
    }

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

    .breadcrumb .current {
        color: var(--primary);
        font-weight: 500;
    }

    .page-header h1 {
        font-size: clamp(28px, 4vw, 44px);
        font-weight: 700;
        color: var(--dark);
        margin: 0 0 16px;
        letter-spacing: -0.01em;
        line-height: 1.3;
    }

    .page-header .subtitle {
        font-size: 1rem;
        color: var(--text-secondary);
        max-width: 720px;
        line-height: 1.7;
    }

    /* Category Entrance */
    .category-entrance {
        background: var(--bg);
        padding: 24px 0;
        border-bottom: 1px solid var(--border);
    }

    .category-entrance-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    .category-entrance-grid a {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 8px 18px;
        border-radius: var(--radius-badge);
        background: var(--bg-light);
        border: 1px solid var(--border);
        font-size: 0.85rem;
        font-weight: 500;
        color: var(--text-secondary);
        transition: all var(--transition);
    }

    .category-entrance-grid a:hover {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
    }

    /* Post List */
    .post-list-section {
        background: var(--bg);
        padding-top: 40px;
        padding-bottom: 64px;
    }

    .post-list {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .post-card {
        display: flex;
        gap: 20px;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 20px 24px;
        box-shadow: var(--shadow-card);
        transition: all var(--transition);
    }

    .post-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-2px);
        border-color: #CBD5E1;
    }

    .post-thumb {
        flex-shrink: 0;
        width: 120px;
        height: 120px;
        border-radius: 10px;
        overflow: hidden;
        background: var(--bg-slate);
    }

    .post-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .post-body {
        flex: 1;
        min-width: 0;
    }

    .post-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-wrap: wrap;
        font-size: 0.8rem;
        color: var(--text-muted);
        margin-bottom: 8px;
    }

    .post-meta .badge {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        padding: 3px 12px;
        border-radius: var(--radius-badge);
        font-size: 0.75rem;
        font-weight: 500;
        background: #EFF4FF;
        color: var(--primary);
    }

    .post-title {
        font-size: 1.1rem;
        font-weight: 600;
        color: var(--dark);
        margin: 0 0 8px;
        line-height: 1.5;
    }

    .post-title a {
        color: inherit;
    }

    .post-title a:hover {
        color: var(--primary);
    }

    .post-excerpt {
        font-size: 0.9rem;
        color: var(--text-secondary);
        line-height: 1.6;
        margin: 0 0 12px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .post-footer {
        display: flex;
        align-items: center;
        gap: 16px;
        font-size: 0.8rem;
        color: var(--text-muted);
    }

    .post-footer .stat {
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }

    .post-footer .stat i {
        font-size: 0.85rem;
    }

    .read-more {
        margin-left: auto;
        font-weight: 500;
        color: var(--primary);
        font-size: 0.85rem;
        white-space: nowrap;
    }

    .read-more:hover {
        color: var(--primary-hover);
    }

    /* Tags */
    .topic-tags {
        background: var(--bg-light);
        padding: 48px 0;
    }

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

    .tags-cloud .tag-item {
        padding: 8px 18px;
        border-radius: var(--radius-badge);
        background: var(--bg);
        border: 1px solid var(--border);
        font-size: 0.85rem;
        font-weight: 500;
        color: var(--text-secondary);
        transition: all var(--transition);
        cursor: default;
    }

    .tags-cloud .tag-item.hot {
        background: #EFF4FF;
        border-color: #BFDBFE;
        color: var(--primary);
    }

    .tags-cloud .tag-item:hover {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
    }

    /* Community Stats */
    .community-stats {
        background: var(--dark);
        padding: 56px 0;
    }

    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 32px;
        text-align: center;
    }

    .stat-item .stat-number {
        font-size: clamp(1.8rem, 3vw, 2.4rem);
        font-weight: 700;
        color: #fff;
        line-height: 1.2;
        letter-spacing: -0.02em;
    }

    .stat-item .stat-label {
        font-size: 0.9rem;
        color: #94A3B8;
        margin-top: 8px;
    }

    .stat-item .stat-icon {
        font-size: 1.5rem;
        color: var(--primary);
        margin-bottom: 12px;
    }

    /* Hot Ranking */
    .hot-ranking {
        background: var(--bg);
        padding: 64px 0;
    }

    .ranking-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .ranking-item {
        display: flex;
        align-items: center;
        gap: 16px;
        padding: 16px 20px;
        background: var(--bg-light);
        border-radius: var(--radius-card);
        border: 1px solid var(--border);
        transition: all var(--transition);
    }

    .ranking-item:hover {
        box-shadow: var(--shadow-card-hover);
        border-color: #CBD5E1;
    }

    .ranking-number {
        flex-shrink: 0;
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        font-weight: 700;
        font-size: 0.95rem;
        background: var(--bg-slate);
        color: var(--text-secondary);
    }

    .ranking-number.top1 {
        background: var(--primary);
        color: #fff;
    }

    .ranking-number.top2 {
        background: #1D4ED8;
        color: #fff;
    }

    .ranking-number.top3 {
        background: #60A5FA;
        color: #fff;
    }

    .ranking-content {
        flex: 1;
        min-width: 0;
    }

    .ranking-title {
        font-size: 0.95rem;
        font-weight: 600;
        color: var(--dark);
        margin: 0 0 4px;
        line-height: 1.4;
    }

    .ranking-meta {
        font-size: 0.8rem;
        color: var(--text-muted);
    }

    /* Related Topics */
    .related-topics {
        background: var(--bg-light);
        padding: 64px 0;
    }

    .topics-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .topic-card {
        background: var(--bg);
        border-radius: var(--radius-card);
        border: 1px solid var(--border);
        overflow: hidden;
        box-shadow: var(--shadow-card);
        transition: all var(--transition);
    }

    .topic-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-2px);
    }

    .topic-card-img {
        height: 160px;
        overflow: hidden;
        background: var(--bg-slate);
    }

    .topic-card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .topic-card-body {
        padding: 20px;
    }

    .topic-card-body h3 {
        font-size: 1rem;
        font-weight: 600;
        color: var(--dark);
        margin: 0 0 8px;
        line-height: 1.4;
    }

    .topic-card-body p {
        font-size: 0.85rem;
        color: var(--text-secondary);
        line-height: 1.6;
        margin: 0;
    }

    /* Subscribe CTA */
    .subscribe-cta {
        background: var(--dark);
        padding: 64px 0;
    }

    .subscribe-wrap {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 40px;
        flex-wrap: wrap;
    }

    .subscribe-info h2 {
        font-size: clamp(24px, 3vw, 32px);
        font-weight: 700;
        color: #fff;
        margin: 0 0 12px;
        line-height: 1.3;
    }

    .subscribe-info p {
        font-size: 0.95rem;
        color: #94A3B8;
        margin: 0;
        max-width: 480px;
        line-height: 1.6;
    }

    .subscribe-form {
        display: flex;
        gap: 12px;
        flex: 1;
        min-width: 280px;
        max-width: 480px;
    }

    .subscribe-form input {
        flex: 1;
        padding: 12px 16px;
        border-radius: var(--radius-btn);
        background: rgba(255,255,255,0.08);
        border: 1px solid rgba(255,255,255,0.2);
        color: #fff;
        font-size: 0.9rem;
        transition: border-color var(--transition);
    }

    .subscribe-form input::placeholder {
        color: #64748B;
    }

    .subscribe-form input:focus {
        border-color: var(--primary);
        outline: none;
    }

    /* FAQ */
    .faq-section {
        background: var(--bg);
        padding: 64px 0;
    }

    .faq-list {
        max-width: 800px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .faq-item {
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        overflow: hidden;
        transition: border-color var(--transition);
    }

    .faq-item:hover {
        border-color: #CBD5E1;
    }

    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 18px 20px;
        cursor: pointer;
        background: var(--bg);
        font-size: 1rem;
        font-weight: 600;
        color: var(--dark);
        transition: background var(--transition);
    }

    .faq-question:hover {
        background: var(--bg-light);
    }

    .faq-question .faq-icon {
        flex-shrink: 0;
        font-size: 0.9rem;
        color: var(--text-muted);
        transition: transform var(--transition);
    }

    .faq-item.open .faq-icon {
        transform: rotate(180deg);
        color: var(--primary);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        padding: 0 20px;
        font-size: 0.9rem;
        color: var(--text-secondary);
        line-height: 1.7;
    }

    .faq-item.open .faq-answer {
        max-height: 300px;
        padding: 0 20px 18px;
    }

    /* Footer */
    footer {
        background: var(--dark);
        padding: 56px 0 24px;
        color: #94A3B8;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 40px;
    }

    .footer-col h3 {
        font-size: 1rem;
        font-weight: 600;
        color: #fff;
        margin: 0 0 16px;
    }

    .footer-col p {
        font-size: 0.85rem;
        line-height: 1.7;
        margin: 0 0 16px;
        color: #94A3B8;
    }

    .footer-col a {
        display: block;
        font-size: 0.85rem;
        color: #94A3B8;
        padding: 6px 0;
        transition: color var(--transition);
    }

    .footer-col a:hover {
        color: var(--primary);
    }

    .footer-copy {
        border-top: 1px solid rgba(255,255,255,0.1);
        padding-top: 24px;
        text-align: center;
        font-size: 0.8rem;
        color: #64748B;
    }

    .footer-copy p {
        margin: 0;
    }

    .footer-copy a {
        color: #94A3B8;
        text-decoration: none;
    }

    .footer-copy a:hover {
        color: var(--primary);
    }

    /* Responsive */
    @media (max-width: 1024px) {
        .nav-links {
            gap: 18px;
            font-size: 0.85rem;
        }

        .topics-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
    }

    @media (max-width: 768px) {
        section {
            padding: var(--section-pad-mobile) 0;
        }

        .page-header {
            padding-top: 110px;
            padding-bottom: 32px;
        }

        .nav-links {
            display: none;
        }

        .nav-cta {
            display: none;
        }

        .hamburger {
            display: flex;
        }

        .mobile-menu {
            display: flex;
        }

        .post-card {
            flex-direction: column;
            padding: 16px;
        }

        .post-thumb {
            width: 100%;
            height: 180px;
        }

        .topics-grid {
            grid-template-columns: 1fr;
        }

        .subscribe-wrap {
            flex-direction: column;
            align-items: flex-start;
        }

        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }

        .stats-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .stat-item .stat-number {
            font-size: 1.6rem;
        }
    }

    @media (max-width: 520px) {
        .container {
            padding: 0 16px;
        }

        .h1 {
            font-size: 28px;
        }

        .stats-grid {
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .post-footer {
            flex-wrap: wrap;
            gap: 12px;
        }

        .read-more {
            margin-left: 0;
        }
    }

/* roulang page: category7 */
:root {
            --primary: #2563EB;
            --primary-hover: #1D4ED8;
            --dark: #0F172A;
            --bg: #FFFFFF;
            --bg-light: #F8FAFC;
            --bg-slate: #F1F5F9;
            --text: #1E293B;
            --text-secondary: #475569;
            --text-muted: #94A3B8;
            --border: #E2E8F0;
            --success: #16A34A;
            --warning: #EA580C;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 8px 20px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);
            --transition: 0.2s ease;
            --container-max: 1200px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 48px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            margin: 0;
        }
        * {
            box-sizing: border-box;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input {
            font-family: inherit;
            outline: none;
            border: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        section {
            padding: var(--section-pad-desktop) 0;
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.7;
            margin-top: 12px;
        }
        .section-title {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        .section-head {
            margin-bottom: 36px;
        }
        .section-head.center {
            text-align: center;
        }
        .section-head.center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        /* Header / Nav */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        header.scrolled {
            box-shadow: 0 4px 16px rgba(0,0,0,0.06);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 16px;
        }
        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--dark);
            white-space: nowrap;
            letter-spacing: -0.02em;
        }
        .logo span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
        }
        .nav-links a {
            position: relative;
            padding: 4px 0;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 4px;
            transition: width var(--transition);
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            white-space: nowrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
            text-align: center;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(37, 99, 235, 0.28);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(37, 99, 235, 0.2);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-lg {
            padding: 12px 28px;
            font-size: 0.95rem;
            border-radius: 10px;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
        }
        .hamburger span {
            width: 24px;
            height: 2px;
            background: var(--dark);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 16px 24px 24px;
            gap: 8px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }
        .mobile-menu.open {
            max-height: 520px;
            padding: 16px 24px 24px;
        }
        .mobile-menu a {
            padding: 10px 0;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--bg-slate);
        }
        .mobile-menu a:hover {
            color: var(--primary);
        }
        .mobile-menu .btn {
            margin-top: 10px;
        }

        /* Page Title Area (Category H1 + Breadcrumb) */
        .page-title-section {
            padding-top: 136px;
            padding-bottom: 48px;
            background: linear-gradient(180deg, #EFF4FF 0%, #F8FAFC 100%);
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--text-muted);
        }
        .breadcrumb .current {
            color: var(--dark);
            font-weight: 600;
        }
        .page-title-section h1 {
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 700;
            color: var(--dark);
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin: 0;
        }
        .page-title-section .subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 760px;
            line-height: 1.7;
            margin-top: 14px;
        }

        /* Category Entry Section */
        .category-entry-section {
            padding: 32px 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }
        .category-entry-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .category-entry-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-badge);
            background: var(--bg-slate);
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .category-entry-link:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
        }

        /* Video Grid Wall */
        .video-grid-section {
            padding-top: 48px;
            padding-bottom: 48px;
            background: var(--bg-light);
        }
        .video-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .video-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .video-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .video-thumb {
            position: relative;
            height: 200px;
            overflow: hidden;
            background: var(--bg-slate);
        }
        .video-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }
        .video-card:hover .video-thumb img {
            transform: scale(1.04);
        }
        .video-play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 52px;
            height: 52px;
            background: rgba(15, 23, 42, 0.75);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
            cursor: pointer;
            transition: all var(--transition);
            pointer-events: none;
        }
        .video-card:hover .video-play-btn {
            background: rgba(37, 99, 235, 0.9);
            transform: translate(-50%, -50%) scale(1.1);
        }
        .video-duration {
            position: absolute;
            bottom: 10px;
            right: 10px;
            background: rgba(0,0,0,0.75);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.02em;
        }
        .video-body {
            padding: 20px 20px 16px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .video-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.45;
            margin: 0 0 8px;
            letter-spacing: -0.01em;
        }
        .video-body .video-summary {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
            flex: 1;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .video-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 14px;
        }
        .video-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .video-meta .meta-dot {
            width: 3px;
            height: 3px;
            background: var(--text-muted);
            border-radius: 50%;
        }
        .video-body .watch-btn {
            align-self: flex-start;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 0;
            background: none;
            cursor: pointer;
            transition: all var(--transition);
        }
        .video-body .watch-btn:hover {
            color: var(--primary-hover);
            gap: 6px;
        }
        .video-load-more {
            text-align: center;
            margin-top: 36px;
        }

        /* Tags Filter */
        .tags-filter-section {
            padding: 36px 0;
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .tags-filter-wrap {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }
        .tags-filter-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark);
            margin-right: 8px;
        }
        .tag-pill {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            border-radius: var(--radius-badge);
            background: var(--bg-slate);
            color: var(--text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition);
        }
        .tag-pill:hover {
            background: #DBEAFE;
            color: var(--primary);
        }
        .tag-pill.active {
            background: var(--primary);
            color: #fff;
        }

        /* Editor Picks */
        .editor-picks-section {
            padding: 56px 0;
            background: var(--bg-light);
        }
        .editor-picks-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .editor-pick-card {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }
        .editor-pick-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .editor-pick-thumb {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: var(--bg-slate);
        }
        .editor-pick-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }
        .editor-pick-card:hover .editor-pick-thumb img {
            transform: scale(1.04);
        }
        .editor-pick-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--warning);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
        }
        .editor-pick-body {
            padding: 18px 20px 20px;
        }
        .editor-pick-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.45;
            margin: 0 0 8px;
        }
        .editor-pick-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0 0 12px;
        }
        .editor-pick-body .pick-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
        }

        /* Topics Section */
        .topics-section {
            padding: 56px 0;
            background: #fff;
        }
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .topic-card {
            display: block;
            background: var(--bg-light);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            padding: 24px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .topic-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .topic-card:hover::before {
            opacity: 1;
        }
        .topic-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: #CBD5E1;
        }
        .topic-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--dark);
            margin: 0 0 8px;
        }
        .topic-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0 0 12px;
        }
        .topic-card .topic-count {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Stats Bar */
        .stats-section {
            padding: 48px 0;
            background: var(--dark);
            border-bottom: 1px solid #1E293B;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: clamp(28px, 3vw, 40px);
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .stat-item .stat-number span {
            color: var(--primary);
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: #94A3B8;
            margin-top: 6px;
        }

        /* Subscribe CTA */
        .subscribe-cta-section {
            padding: 64px 0;
            background: linear-gradient(135deg, #EFF4FF 0%, #F8FAFC 100%);
        }
        .subscribe-cta-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            background: #fff;
            border-radius: 16px;
            padding: 40px 48px;
            box-shadow: var(--shadow-card);
            flex-wrap: wrap;
        }
        .subscribe-cta-copy {
            flex: 1;
            min-width: 280px;
        }
        .subscribe-cta-copy h2 {
            font-size: clamp(20px, 2.5vw, 28px);
            font-weight: 700;
            color: var(--dark);
            margin: 0 0 10px;
            line-height: 1.3;
        }
        .subscribe-cta-copy p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            min-width: 280px;
            flex: 1;
            max-width: 420px;
        }
        .subscribe-form input {
            flex: 1;
            padding: 12px 18px;
            border-radius: var(--radius-btn);
            border: 1.5px solid var(--border);
            font-size: 0.9rem;
            color: var(--text);
            background: var(--bg);
            transition: all var(--transition);
        }
        .subscribe-form input:focus {
            border-color: var(--primary);
            outline: 2px solid rgba(37, 99, 235, 0.15);
            outline-offset: 0;
        }
        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }

        /* Footer */
        footer {
            background: var(--dark);
            color: #94A3B8;
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h3 {
            color: #fff;
            font-size: 1.1rem;
            font-weight: 600;
            margin: 0 0 16px;
            letter-spacing: -0.01em;
        }
        .footer-col p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: #94A3B8;
        }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: #94A3B8;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-copy {
            border-top: 1px solid #1E293B;
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: #64748B;
        }
        .footer-copy a {
            color: #94A3B8;
        }
        .footer-copy a:hover {
            color: #fff;
        }

        /* Breadcrumb Icons */
        .breadcrumb svg {
            vertical-align: middle;
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu {
                display: flex;
            }
            .nav-cta {
                gap: 8px;
            }
            .nav-cta .btn {
                display: none;
            }
            .mobile-menu .btn {
                display: inline-flex;
            }
            section {
                padding: var(--section-pad-mobile) 0;
            }
            .page-title-section {
                padding-top: 112px;
                padding-bottom: 40px;
            }
            .video-grid,
            .editor-picks-grid,
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .nav-wrap {
                height: 56px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .page-title-section h1 {
                font-size: 28px;
            }
            .video-grid,
            .editor-picks-grid,
            .topics-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .subscribe-cta-wrap {
                padding: 28px 24px;
                flex-direction: column;
                text-align: center;
            }
            .subscribe-form {
                width: 100%;
                max-width: none;
                flex-direction: column;
            }
            .subscribe-form .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-copy {
                font-size: 0.75rem;
                line-height: 1.6;
            }
            .video-thumb {
                height: 180px;
            }
            .editor-pick-thumb {
                height: 160px;
            }
            .category-entry-link {
                font-size: 0.82rem;
                padding: 6px 14px;
            }
            .tags-filter-label {
                width: 100%;
                margin-bottom: 4px;
            }
            .tag-pill {
                font-size: 0.8rem;
                padding: 5px 12px;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stat-item .stat-number {
                font-size: 28px;
            }
            .video-thumb {
                height: 160px;
            }
        }