/* roulang page: index */
:root {
      --primary: #0B3C5D;
      --primary-dark: #082C45;
      --accent: #16A5A3;
      --accent-light: rgba(22,165,163,0.12);
      --star: #F2C94C;
      --bg: #F4F8FC;
      --surface: #FFFFFF;
      --text: #1F2A36;
      --muted: #6B7A8D;
      --border: #E5EDF5;
      --border-strong: #D8E2ED;
      --danger: #D64545;
      --footer-bg: #0A2A3C;
      --footer-text: #DCE9F5;
      --radius-sm: 12px;
      --radius-md: 16px;
      --radius-pill: 999px;
      --shadow-card: 0 8px 24px rgba(10,61,98,0.08);
      --shadow-card-hover: 0 14px 32px rgba(10,61,98,0.14);
      --transition: all 0.25s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      background-color: var(--bg);
      color: var(--text);
      font-size: 16px;
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

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

    img {
      max-width: 100%;
      border-radius: var(--radius-sm);
    }

    .container {
      max-width: 1200px;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* Header */
    .site-header {
      background-color: rgba(11,60,93,0.96);
      backdrop-filter: blur(10px);
      position: sticky;
      top: 0;
      z-index: 1050;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      box-shadow: 0 4px 20px rgba(10,61,98,0.2);
    }

    .site-header .navbar {
      padding: 12px 0;
    }

    .brand-link {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 1.4rem;
      color: #FFFFFF;
      letter-spacing: 0.5px;
    }

    .brand-link:hover {
      color: var(--star);
    }

    .brand-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--star), #E6B940);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark);
      font-size: 1.1rem;
    }

    .navbar-nav .nav-link {
      color: rgba(255,255,255,0.82);
      font-size: 0.95rem;
      font-weight: 500;
      padding: 8px 14px;
      border-radius: 8px;
      transition: var(--transition);
      white-space: nowrap;
    }

    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active {
      color: #FFFFFF;
      background-color: rgba(255,255,255,0.12);
    }

    .nav-cta {
      background-color: var(--star);
      color: var(--primary-dark);
      border: none;
      border-radius: var(--radius-pill);
      padding: 10px 22px;
      font-weight: 700;
      font-size: 0.9rem;
      transition: var(--transition);
      white-space: nowrap;
    }

    .nav-cta:hover {
      background-color: #E6B940;
      transform: translateY(-1px);
      color: var(--primary-dark);
    }

    .navbar-toggler {
      border: 1px solid rgba(255,255,255,0.3);
      color: #FFFFFF;
      padding: 6px 10px;
      border-radius: 8px;
    }

    .navbar-toggler:focus {
      box-shadow: 0 0 0 3px rgba(242,201,76,0.3);
      outline: none;
    }

    .navbar-toggler-icon {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    /* Mobile Bottom Tab */
    .mobile-bottom-nav {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background-color: rgba(255,255,255,0.98);
      backdrop-filter: blur(12px);
      border-top: 1px solid var(--border);
      z-index: 1049;
      padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
      box-shadow: 0 -4px 16px rgba(10,61,98,0.08);
    }

    .mobile-bottom-nav .tab-inner {
      display: flex;
      justify-content: space-around;
      align-items: center;
    }

    .mobile-bottom-nav .tab-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 3px;
      color: var(--muted);
      font-size: 0.7rem;
      font-weight: 500;
      padding: 4px 10px;
      border-radius: 8px;
      transition: var(--transition);
    }

    .mobile-bottom-nav .tab-item i {
      font-size: 1.1rem;
    }

    .mobile-bottom-nav .tab-item.active {
      color: var(--primary);
    }

    .mobile-bottom-nav .tab-item:hover {
      color: var(--primary);
      background-color: var(--accent-light);
    }

    /* Hero */
    .hero-section {
      background-image: linear-gradient(135deg, rgba(8,44,69,0.93) 0%, rgba(11,60,93,0.88) 60%, rgba(10,42,60,0.92) 100%),
        url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      min-height: 580px;
      display: flex;
      align-items: center;
      padding: 80px 0 90px;
      position: relative;
      overflow: hidden;
    }

    .hero-section::before {
      content: '';
      position: absolute;
      top: -50%;
      right: -20%;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(242,201,76,0.06) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-section::after {
      content: '';
      position: absolute;
      bottom: -40%;
      left: -10%;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(22,165,163,0.08) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }

    .hero-section .container {
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background-color: rgba(242,201,76,0.16);
      color: var(--star);
      border: 1px solid rgba(242,201,76,0.3);
      border-radius: var(--radius-pill);
      padding: 6px 16px;
      font-size: 0.82rem;
      font-weight: 600;
      letter-spacing: 0.3px;
      margin-bottom: 18px;
    }

    .hero-badge .dot {
      width: 8px;
      height: 8px;
      background-color: var(--star);
      border-radius: 50%;
      animation: pulse-dot 1.8s infinite;
    }

    @keyframes pulse-dot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.6; transform: scale(1.4); }
    }

    .hero-section h1 {
      color: #FFFFFF;
      font-size: clamp(2rem, 4vw, 2.8rem);
      font-weight: 700;
      line-height: 1.25;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }

    .hero-sub {
      color: rgba(255,255,255,0.78);
      font-size: 1.05rem;
      line-height: 1.8;
      max-width: 560px;
      margin-bottom: 28px;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 28px;
    }

    .btn-primary-cta {
      background-color: var(--star);
      color: var(--primary-dark);
      border: none;
      border-radius: var(--radius-pill);
      padding: 13px 30px;
      font-weight: 700;
      font-size: 0.98rem;
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-primary-cta:hover {
      background-color: #E6B940;
      transform: translateY(-2px);
      color: var(--primary-dark);
    }

    .btn-outline-cta {
      background-color: transparent;
      color: #FFFFFF;
      border: 1.5px solid rgba(255,255,255,0.45);
      border-radius: var(--radius-pill);
      padding: 13px 28px;
      font-weight: 600;
      font-size: 0.98rem;
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-outline-cta:hover {
      background-color: rgba(255,255,255,0.12);
      border-color: rgba(255,255,255,0.75);
      color: #FFFFFF;
    }

    .hero-trust {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
      color: rgba(255,255,255,0.65);
      font-size: 0.85rem;
    }

    .hero-trust i {
      color: var(--star);
      margin-right: 6px;
    }

    .hero-visual {
      background-color: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.18);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      backdrop-filter: blur(8px);
    }

    .hero-visual img {
      width: 100%;
      max-height: 320px;
      object-fit: cover;
      border-radius: var(--radius-md);
      box-shadow: 0 16px 40px rgba(0,0,0,0.3);
    }

    .hero-visual-caption {
      color: rgba(255,255,255,0.65);
      font-size: 0.85rem;
      margin-top: 14px;
      letter-spacing: 0.3px;
    }

    /* Section common */
    .section-block {
      padding: 80px 0;
    }

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

    .section-header .eyebrow {
      display: inline-block;
      background-color: var(--accent-light);
      color: var(--accent);
      border-radius: var(--radius-pill);
      padding: 4px 16px;
      font-size: 0.8rem;
      font-weight: 600;
      letter-spacing: 0.3px;
      margin-bottom: 12px;
    }

    .section-header h2 {
      font-size: clamp(1.5rem, 2.8vw, 2rem);
      font-weight: 700;
      color: var(--primary-dark);
      line-height: 1.3;
      margin-bottom: 10px;
    }

    .section-header p {
      color: var(--muted);
      font-size: 0.98rem;
      max-width: 680px;
      margin-bottom: 0;
    }

    /* Services */
    .services-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .service-card-lg {
      grid-row: span 2;
      background-color: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .service-card-lg:hover,
    .service-card-sm:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-card-hover);
    }

    .service-card-lg .card-img-wrap {
      height: 220px;
      overflow: hidden;
      border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    }

    .service-card-lg .card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .service-card-lg:hover .card-img-wrap img {
      transform: scale(1.04);
    }

    .service-card-lg .card-body {
      padding: 24px;
      flex: 1;
    }

    .service-card-sm {
      background-color: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      padding: 20px 22px;
      transition: var(--transition);
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }

    .service-icon {
      width: 48px;
      height: 48px;
      background-color: var(--accent-light);
      color: var(--accent);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      flex-shrink: 0;
    }

    .service-card-lg .service-icon {
      margin-bottom: 12px;
    }

    .service-card-title {
      font-size: 1.12rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 8px;
    }

    .service-card-desc {
      color: var(--muted);
      font-size: 0.92rem;
      line-height: 1.7;
      margin-bottom: 0;
    }

    /* Stats */
    .stats-section {
      background-color: var(--primary-dark);
      border-radius: var(--radius-md);
      padding: 48px 40px;
      box-shadow: var(--shadow-card-hover);
      position: relative;
      overflow: hidden;
    }

    .stats-section::before {
      content: '';
      position: absolute;
      top: -30%;
      right: -15%;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(242,201,76,0.08) 0%, transparent 70%);
      border-radius: 50%;
    }

    .stats-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
      z-index: 2;
    }

    .stat-item {
      text-align: center;
      padding: 12px 16px;
      border-right: 1px solid rgba(255,255,255,0.1);
    }

    .stat-item:last-child {
      border-right: none;
    }

    .stat-number {
      font-size: 2.4rem;
      font-weight: 700;
      color: var(--star);
      letter-spacing: 1px;
      line-height: 1.2;
      margin-bottom: 6px;
    }

    .stat-label {
      color: rgba(255,255,255,0.72);
      font-size: 0.9rem;
      letter-spacing: 1px;
    }

    /* Cases */
    .cases-grid {
      display: grid;
      gap: 24px;
    }

    .case-card {
      background-color: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      transition: var(--transition);
      display: flex;
      align-items: stretch;
    }

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

    .case-card .case-img {
      width: 320px;
      min-height: 100%;
      object-fit: cover;
      flex-shrink: 0;
    }

    .case-card .case-body {
      padding: 24px 28px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .case-tag {
      display: inline-block;
      background-color: var(--accent-light);
      color: var(--accent);
      border-radius: var(--radius-pill);
      padding: 3px 14px;
      font-size: 0.78rem;
      font-weight: 600;
      margin-bottom: 10px;
      align-self: flex-start;
    }

    .case-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 8px;
    }

    .case-desc {
      color: var(--muted);
      font-size: 0.92rem;
      line-height: 1.7;
      margin-bottom: 14px;
    }

    .case-arrow {
      color: var(--accent);
      font-weight: 600;
      font-size: 0.9rem;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .case-arrow:hover {
      color: var(--primary-dark);
    }

    /* Plan / deep content */
    .plan-row {
      display: flex;
      align-items: center;
      gap: 40px;
      padding: 30px 0;
      border-bottom: 1px solid var(--border);
    }

    .plan-row:last-child {
      border-bottom: none;
    }

    .plan-row.reverse {
      flex-direction: row-reverse;
    }

    .plan-text {
      flex: 1;
    }

    .plan-text h3 {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 12px;
    }

    .plan-text p {
      color: var(--muted);
      font-size: 0.95rem;
      line-height: 1.8;
      margin-bottom: 0;
    }

    .plan-img {
      flex: 1;
      max-width: 400px;
    }

    .plan-img img {
      width: 100%;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      object-fit: cover;
      height: 220px;
    }

    /* Brand intro */
    .brand-intro-card {
      background-color: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      padding: 40px;
      max-width: 860px;
      margin: 0 auto;
    }

    .brand-intro-card p {
      color: var(--text);
      font-size: 1rem;
      line-height: 2;
      margin-bottom: 0;
      text-align: justify;
    }

    /* News */
    .news-list {
      background-color: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      padding: 28px 32px;
    }

    .news-item {
      display: flex;
      gap: 22px;
      padding: 18px 10px;
      border-bottom: 1px solid var(--border);
      transition: var(--transition);
      border-radius: 8px;
    }

    .news-item:last-child {
      border-bottom: none;
    }

    .news-item:hover {
      background-color: #F0F6FB;
    }

    .news-date {
      flex-shrink: 0;
      min-width: 72px;
      font-size: 0.85rem;
      color: var(--muted);
      font-weight: 500;
      padding-top: 2px;
    }

    .news-content {
      flex: 1;
    }

    .news-title {
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 6px;
      line-height: 1.5;
    }

    .news-summary {
      color: var(--muted);
      font-size: 0.9rem;
      line-height: 1.7;
      margin-bottom: 10px;
    }

    .news-readmore {
      color: var(--accent);
      font-weight: 600;
      font-size: 0.88rem;
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }

    .news-readmore:hover {
      color: var(--primary-dark);
    }

    /* Coupon wall */
    .coupon-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .coupon-card {
      background-color: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      padding: 26px 24px;
      text-align: center;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .coupon-card::before {
      content: '';
      position: absolute;
      top: -30px;
      right: -30px;
      width: 90px;
      height: 90px;
      background: radial-gradient(circle, rgba(242,201,76,0.2) 0%, transparent 70%);
      border-radius: 50%;
    }

    .coupon-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card-hover);
    }

    .coupon-amount {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: 1px;
      margin-bottom: 4px;
    }

    .coupon-amount span {
      font-size: 1rem;
      color: var(--muted);
    }

    .coupon-label {
      color: var(--muted);
      font-size: 0.88rem;
      margin-bottom: 16px;
    }

    .coupon-btn {
      background-color: var(--primary);
      color: #FFFFFF;
      border: none;
      border-radius: var(--radius-pill);
      padding: 9px 24px;
      font-weight: 600;
      font-size: 0.88rem;
      transition: var(--transition);
    }

    .coupon-btn:hover {
      background-color: var(--primary-dark);
      transform: translateY(-1px);
      color: #FFFFFF;
    }

    .coupon-rules {
      text-align: center;
      margin-top: 24px;
      color: var(--muted);
      font-size: 0.85rem;
    }

    /* Progress */
    .progress-module {
      background-color: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      padding: 30px 32px;
    }

    .progress-step {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      padding: 16px 0;
      border-bottom: 1px dashed var(--border);
    }

    .progress-step:last-child {
      border-bottom: none;
    }

    .progress-step-icon {
      width: 40px;
      height: 40px;
      background-color: var(--accent-light);
      color: var(--accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      flex-shrink: 0;
    }

    .progress-step-icon.done {
      background-color: var(--accent);
      color: #FFFFFF;
    }

    .progress-step-content h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 4px;
    }

    .progress-step-content p {
      color: var(--muted);
      font-size: 0.88rem;
      margin-bottom: 8px;
    }

    .progress-bar-custom {
      height: 8px;
      background-color: var(--border);
      border-radius: var(--radius-pill);
      overflow: hidden;
      max-width: 320px;
    }

    .progress-bar-custom .bar-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--accent), var(--star));
      border-radius: var(--radius-pill);
      transition: width 1s ease;
    }

    /* Live preview */
    .live-preview-card {
      background-color: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      display: flex;
      align-items: stretch;
    }

    .live-preview-img {
      width: 320px;
      object-fit: cover;
      flex-shrink: 0;
    }

    .live-preview-body {
      padding: 24px 28px;
      flex: 1;
    }

    .live-tag {
      display: inline-block;
      background-color: #D64545;
      color: #FFFFFF;
      border-radius: var(--radius-pill);
      padding: 3px 14px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      margin-bottom: 10px;
    }

    .live-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary-dark);
      margin-bottom: 8px;
    }

    .live-desc {
      color: var(--muted);
      font-size: 0.92rem;
      line-height: 1.7;
      margin-bottom: 14px;
    }

    .live-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      color: var(--muted);
      font-size: 0.82rem;
      margin-bottom: 16px;
    }

    .live-meta i {
      color: var(--accent);
      margin-right: 5px;
    }

    .btn-live-remind {
      background-color: var(--star);
      color: var(--primary-dark);
      border: none;
      border-radius: var(--radius-pill);
      padding: 10px 24px;
      font-weight: 700;
      font-size: 0.9rem;
      transition: var(--transition);
    }

    .btn-live-remind:hover {
      background-color: #E6B940;
      transform: translateY(-1px);
    }

    /* FAQ */
    .accordion-custom .accordion-item {
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      background-color: var(--surface);
      box-shadow: 0 2px 10px rgba(10,61,98,0.04);
    }

    .accordion-custom .accordion-button {
      background-color: var(--surface);
      color: var(--primary-dark);
      font-weight: 600;
      font-size: 0.98rem;
      padding: 18px 22px;
      border: none;
      box-shadow: none;
      transition: var(--transition);
    }

    .accordion-custom .accordion-button:not(.collapsed) {
      background-color: var(--surface);
      color: var(--primary);
      box-shadow: none;
    }

    .accordion-custom .accordion-button:focus {
      box-shadow: 0 0 0 3px rgba(22,165,163,0.2);
      outline: none;
    }

    .accordion-custom .accordion-button::after {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230B3C5D'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
      transition: transform 0.25s ease;
    }

    .accordion-custom .accordion-button:not(.collapsed)::after {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2316A5A3'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
      transform: rotate(-180deg);
    }

    .accordion-custom .accordion-body {
      color: var(--muted);
      font-size: 0.92rem;
      line-height: 1.8;
      padding: 0 22px 18px;
    }

    /* Contact */
    .contact-section {
      background-color: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      overflow: hidden;
    }

    .contact-form-wrap {
      padding: 36px;
    }

    .form-label {
      color: var(--text);
      font-weight: 600;
      font-size: 0.9rem;
      margin-bottom: 6px;
    }

    .form-control,
    .form-select {
      border: 1.5px solid var(--border-strong);
      border-radius: var(--radius-sm);
      padding: 10px 14px;
      font-size: 0.92rem;
      transition: var(--transition);
      background-color: var(--surface);
    }

    .form-control:focus,
    .form-select:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 4px rgba(22,165,163,0.15);
      outline: none;
    }

    .form-control.error {
      border-color: var(--danger);
      box-shadow: 0 0 0 4px rgba(214,69,69,0.12);
    }

    .form-error-msg {
      color: var(--danger);
      font-size: 0.8rem;
      margin-top: 4px;
      display: none;
    }

    .form-error-msg.show {
      display: block;
    }

    .btn-submit-form {
      background-color: var(--primary);
      color: #FFFFFF;
      border: none;
      border-radius: var(--radius-sm);
      padding: 12px 36px;
      font-weight: 700;
      font-size: 0.95rem;
      transition: var(--transition);
      width: 100%;
    }

    .btn-submit-form:hover {
      background-color: var(--primary-dark);
      transform: translateY(-2px);
      color: #FFFFFF;
    }

    .contact-info-card {
      background-color: var(--bg);
      border-left: 1px solid var(--border);
      padding: 36px 28px;
      height: 100%;
    }

    .contact-info-item {
      display: flex;
      gap: 14px;
      padding: 14px 0;
      border-bottom: 1px solid var(--border);
    }

    .contact-info-item:last-child {
      border-bottom: none;
    }

    .contact-info-icon {
      width: 42px;
      height: 42px;
      background-color: var(--accent-light);
      color: var(--accent);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      flex-shrink: 0;
    }

    .contact-info-label {
      font-size: 0.78rem;
      color: var(--muted);
      margin-bottom: 2px;
    }

    .contact-info-value {
      font-weight: 600;
      color: var(--text);
      font-size: 0.95rem;
    }

    /* Footer */
    .site-footer {
      background-color: var(--footer-bg);
      color: var(--footer-text);
      padding: 56px 0 20px;
      margin-top: 80px;
    }

    .footer-brand {
      font-size: 1.5rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 12px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }

    .footer-brand:hover {
      color: var(--star);
    }

    .footer-desc {
      color: rgba(220,233,245,0.72);
      font-size: 0.9rem;
      line-height: 1.7;
      max-width: 360px;
      margin-bottom: 20px;
    }

    .footer-title {
      color: #FFFFFF;
      font-weight: 600;
      font-size: 1rem;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }

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

    .footer-links li {
      margin-bottom: 9px;
    }

    .footer-links a {
      color: rgba(220,233,245,0.72);
      font-size: 0.9rem;
      transition: var(--transition);
    }

    .footer-links a:hover {
      color: var(--accent);
    }

    .footer-contact-item {
      color: rgba(220,233,245,0.72);
      font-size: 0.88rem;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-contact-item i {
      color: var(--accent);
      width: 18px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      margin-top: 40px;
      padding-top: 20px;
      text-align: center;
      font-size: 0.82rem;
      color: rgba(220,233,245,0.6);
    }

    .footer-bottom a {
      color: rgba(220,233,245,0.75);
      transition: var(--transition);
    }

    .footer-bottom a:hover {
      color: var(--accent);
    }

    .footer-beian {
      margin-top: 8px;
      font-size: 0.78rem;
    }

    /* Responsive */
    @media (max-width: 991px) {
      .site-header .navbar {
        padding: 10px 0;
      }

      .hero-section {
        min-height: auto;
        padding: 56px 0 80px;
      }

      .hero-visual {
        margin-top: 28px;
      }

      .section-block {
        padding: 56px 0;
      }

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

      .service-card-lg {
        grid-row: auto;
      }

      .stats-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }

      .stat-item:nth-child(2) {
        border-right: none;
      }

      .stat-item {
        border-right: 1px solid rgba(255,255,255,0.1);
      }

      .case-card {
        flex-direction: column;
      }

      .case-card .case-img {
        width: 100%;
        height: 200px;
        object-fit: cover;
      }

      .plan-row,
      .plan-row.reverse {
        flex-direction: column;
        gap: 20px;
      }

      .plan-img {
        max-width: 100%;
      }

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

      .live-preview-card {
        flex-direction: column;
      }

      .live-preview-img {
        width: 100%;
        height: 200px;
        object-fit: cover;
      }

      .contact-info-card {
        border-left: none;
        border-top: 1px solid var(--border);
      }

      .mobile-bottom-nav {
        display: block;
      }

      body {
        padding-bottom: 70px;
      }
    }

    @media (max-width: 767px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }

      .hero-section {
        padding: 48px 0 64px;
      }

      .hero-section h1 {
        font-size: 1.8rem;
      }

      .hero-cta-group {
        flex-direction: column;
      }

      .hero-cta-group .btn-primary-cta,
      .hero-cta-group .btn-outline-cta {
        width: 100%;
        justify-content: center;
      }

      .hero-trust {
        flex-direction: column;
        gap: 10px;
      }

      .section-block {
        padding: 40px 0;
      }

      .stats-section {
        padding: 32px 20px;
      }

      .stats-row {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
      }

      .stat-number {
        font-size: 1.8rem;
      }

      .news-list {
        padding: 16px 12px;
      }

      .news-item {
        flex-direction: column;
        gap: 8px;
      }

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

      .brand-intro-card {
        padding: 24px;
      }

      .contact-form-wrap,
      .contact-info-card {
        padding: 24px 16px;
      }

      .site-footer {
        padding: 40px 0 10px;
        margin-top: 40px;
      }
    }

    @media (max-width: 520px) {
      .stats-row {
        grid-template-columns: 1fr;
        gap: 12px;
      }

      .stat-item {
        border-right: none;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        padding-bottom: 16px;
      }

      .stat-item:last-child {
        border-bottom: none;
      }

      .progress-module {
        padding: 18px 14px;
      }

      .live-preview-body {
        padding: 18px 16px;
      }
    }

/* roulang page: category1 */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082C45;
            --accent: #16A5A3;
            --accent-light: rgba(22, 165, 163, 0.12);
            --star: #F2C94C;
            --bg: #F4F8FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --muted: #6B7A8D;
            --border: #E5EDF5;
            --border-strong: #D8E2ED;
            --danger: #D64545;
            --footer-bg: #0A2A3C;
            --footer-text: #DCE9F5;
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(10, 61, 98, 0.08);
            --shadow-card-hover: 0 14px 32px rgba(10, 61, 98, 0.14);
            --transition: all 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            padding-bottom: 70px;
        }

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

        img {
            max-width: 100%;
            border-radius: var(--radius-sm);
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header */
        .site-header {
            background-color: rgba(11, 60, 93, 0.96);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1050;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(10, 61, 98, 0.2);
        }

        .site-header .navbar {
            padding: 12px 0;
        }

        .brand-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.4rem;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }

        .brand-link:hover {
            color: var(--star);
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--star), #E6B940);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1.1rem;
        }

        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.12);
        }

        .nav-cta {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-pill);
            padding: 10px 22px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background-color: #E6B940;
            transform: translateY(-1px);
            color: var(--primary-dark);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #FFFFFF;
            padding: 6px 10px;
            border-radius: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(242, 201, 76, 0.3);
            outline: none;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            background-color: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
        }

        .breadcrumb-wrap .breadcrumb {
            margin: 0;
            font-size: 0.88rem;
            --bs-breadcrumb-divider-color: var(--muted);
        }

        .breadcrumb-wrap .breadcrumb a {
            color: var(--muted);
        }

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

        .breadcrumb-wrap .breadcrumb-item.active {
            color: var(--primary);
            font-weight: 600;
        }

        /* Page Banner */
        .page-banner {
            background-image: linear-gradient(135deg, rgba(8, 44, 69, 0.92) 0%, rgba(11, 60, 93, 0.88) 55%, rgba(10, 42, 60, 0.94) 100%),
                url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(242, 201, 76, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .page-banner h1 {
            color: #FFFFFF;
            font-size: clamp(1.8rem, 3.4vw, 2.4rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .page-banner .banner-sub {
            color: rgba(255, 255, 255, 0.82);
            font-size: 1.05rem;
            max-width: 720px;
            line-height: 1.8;
        }

        .page-banner .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 20px;
        }

        .page-banner .banner-meta span {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.88rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .page-banner .banner-meta i {
            color: var(--star);
        }

        /* Section Common */
        .section-block {
            padding: 72px 0;
        }

        .section-block .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent);
            background-color: var(--accent-light);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            margin-bottom: 12px;
            letter-spacing: 0.4px;
        }

        .section-block .section-title {
            font-size: clamp(1.5rem, 2.4vw, 2rem);
            font-weight: 700;
            color: var(--text);
            line-height: 1.35;
            margin-bottom: 12px;
        }

        .section-block .section-desc {
            color: var(--muted);
            font-size: 1rem;
            max-width: 720px;
            line-height: 1.8;
        }

        /* Sub-category Large Card */
        .subcat-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .subcat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .subcat-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }

        .subcat-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: var(--transition);
        }

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

        .subcat-card .card-img-wrap .img-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background-color: rgba(11, 60, 93, 0.9);
            color: #FFFFFF;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .subcat-card .card-body {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .subcat-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .subcat-card .card-body p {
            color: var(--muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 16px;
            flex-grow: 1;
        }

        .subcat-card .card-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .subcat-card .card-link:hover {
            color: var(--accent);
        }

        /* Deep Content Area */
        .deep-article {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 36px 40px;
            margin-bottom: 32px;
        }

        .deep-article .article-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
            flex-wrap: wrap;
        }

        .deep-article .article-header .article-icon {
            width: 46px;
            height: 46px;
            background-color: var(--accent-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .deep-article .article-header h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0;
            color: var(--text);
        }

        .deep-article .article-meta {
            color: var(--muted);
            font-size: 0.82rem;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .deep-article .article-body {
            color: var(--text);
            font-size: 0.96rem;
            line-height: 1.9;
        }

        .deep-article .article-body p {
            margin-bottom: 14px;
        }

        /* Related Recommendation */
        .related-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .related-card .card-img-wrap {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            position: relative;
        }

        .related-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }

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

        .related-card .card-body .rel-tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent);
            background-color: var(--accent-light);
            border-radius: var(--radius-pill);
            padding: 3px 12px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-bottom: 8px;
            align-self: flex-start;
        }

        .related-card .card-body h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .related-card .card-body p {
            font-size: 0.85rem;
            color: var(--muted);
            line-height: 1.6;
            margin-bottom: 12px;
            flex-grow: 1;
        }

        .related-card .card-body .rel-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .related-card .card-body .rel-link:hover {
            color: var(--accent);
        }

        /* CTA Section */
        .cta-section {
            background-image: linear-gradient(135deg, rgba(8, 44, 69, 0.95) 0%, rgba(11, 60, 93, 0.9) 55%, rgba(10, 42, 60, 0.95) 100%),
                url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            padding: 64px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -30%;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(242, 201, 76, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            color: #FFFFFF;
            font-size: clamp(1.5rem, 2.6vw, 2rem);
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1rem;
            max-width: 620px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }

        .cta-section .btn-primary-custom {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-pill);
            padding: 14px 34px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .cta-section .btn-primary-custom:hover {
            background-color: #E6B940;
            transform: translateY(-2px);
            color: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(242, 201, 76, 0.3);
        }

        /* Footer */
        .site-footer {
            background-color: var(--footer-bg);
            color: var(--footer-text);
            padding: 56px 0 32px;
            margin-top: 0;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: #FFFFFF;
            margin-bottom: 14px;
        }

        .footer-brand:hover {
            color: var(--star);
        }

        .footer-desc {
            color: rgba(220, 233, 245, 0.7);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-title {
            color: #FFFFFF;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.4px;
        }

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

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: rgba(220, 233, 245, 0.72);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--star);
        }

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(220, 233, 245, 0.7);
            font-size: 0.88rem;
            margin-bottom: 10px;
        }

        .footer-contact-item i {
            color: var(--star);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 36px;
            padding-top: 22px;
            text-align: center;
        }

        .footer-bottom p {
            color: rgba(220, 233, 245, 0.55);
            font-size: 0.82rem;
            margin-bottom: 4px;
        }

        .footer-bottom a {
            color: rgba(220, 233, 245, 0.65);
            font-size: 0.82rem;
        }

        .footer-bottom a:hover {
            color: var(--star);
        }

        .footer-bottom .footer-beian {
            font-size: 0.8rem;
            color: rgba(220, 233, 245, 0.5);
        }

        /* Mobile Bottom Tab */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            z-index: 1049;
            padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
            box-shadow: 0 -4px 16px rgba(10, 61, 98, 0.08);
        }

        .mobile-bottom-nav .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
        }

        .mobile-bottom-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            color: var(--muted);
            font-size: 0.7rem;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .mobile-bottom-nav .tab-item i {
            font-size: 1.1rem;
        }

        .mobile-bottom-nav .tab-item.active {
            color: var(--primary);
        }

        .mobile-bottom-nav .tab-item:hover {
            color: var(--primary);
            background-color: var(--accent-light);
        }

        /* Buttons */
        .btn-primary-custom {
            background-color: var(--primary);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.92rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-custom:hover {
            background-color: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(10, 61, 98, 0.25);
        }

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

        .btn-outline-custom {
            background-color: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 11px 26px;
            font-weight: 600;
            font-size: 0.92rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-custom:hover {
            background-color: var(--accent-light);
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-1px);
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            body {
                padding-bottom: 70px;
            }

            .mobile-bottom-nav {
                display: block;
            }

            .site-header {
                position: sticky;
                top: 0;
            }

            .section-block {
                padding: 56px 0;
            }

            .deep-article {
                padding: 28px 22px;
            }

            .page-banner {
                padding: 56px 0;
            }
        }

        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .section-block {
                padding: 44px 0;
            }

            .page-banner {
                padding: 40px 0;
            }

            .page-banner h1 {
                font-size: 1.6rem;
            }

            .deep-article {
                padding: 22px 16px;
                margin-bottom: 20px;
            }

            .deep-article .article-body {
                font-size: 0.92rem;
            }

            .subcat-card .card-body {
                padding: 18px 16px 20px;
            }

            .related-card .card-body {
                padding: 14px 16px 18px;
            }

            .cta-section {
                padding: 48px 0;
            }

            .cta-section h2 {
                font-size: 1.4rem;
            }
        }

        @media (min-width: 1200px) {
            .container {
                max-width: 1200px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082C45;
            --accent: #16A5A3;
            --accent-light: rgba(22, 165, 163, 0.12);
            --star: #F2C94C;
            --bg: #F4F8FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --muted: #6B7A8D;
            --border: #E5EDF5;
            --border-strong: #D8E2ED;
            --danger: #D64545;
            --footer-bg: #0A2A3C;
            --footer-text: #DCE9F5;
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(10, 61, 98, 0.08);
            --shadow-card-hover: 0 14px 32px rgba(10, 61, 98, 0.14);
            --transition: all 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

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

        img {
            max-width: 100%;
            border-radius: var(--radius-sm);
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header */
        .site-header {
            background-color: rgba(11, 60, 93, 0.96);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1050;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(10, 61, 98, 0.2);
        }
        .site-header .navbar {
            padding: 12px 0;
        }
        .brand-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.4rem;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }
        .brand-link:hover {
            color: var(--star);
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--star), #E6B940);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1.1rem;
        }
        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.12);
        }
        .nav-cta {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-pill);
            padding: 10px 22px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background-color: #E6B940;
            transform: translateY(-1px);
            color: var(--primary-dark);
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #FFFFFF;
            padding: 6px 10px;
            border-radius: 8px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(242, 201, 76, 0.3);
            outline: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Mobile Bottom Tab */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            z-index: 1049;
            padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
            box-shadow: 0 -4px 16px rgba(10, 61, 98, 0.08);
        }
        .mobile-bottom-nav .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
        }
        .mobile-bottom-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            color: var(--muted);
            font-size: 0.7rem;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .mobile-bottom-nav .tab-item i {
            font-size: 1.1rem;
        }
        .mobile-bottom-nav .tab-item.active {
            color: var(--primary);
        }
        .mobile-bottom-nav .tab-item:hover {
            color: var(--primary);
            background-color: var(--accent-light);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 24px 0 0;
            background-color: transparent;
        }
        .breadcrumb-section .breadcrumb {
            margin-bottom: 0;
            font-size: 0.9rem;
            --bs-breadcrumb-divider-color: var(--muted);
        }
        .breadcrumb-section .breadcrumb-item a {
            color: var(--muted);
        }
        .breadcrumb-section .breadcrumb-item a:hover {
            color: var(--accent);
        }
        .breadcrumb-section .breadcrumb-item.active {
            color: var(--primary);
            font-weight: 500;
        }

        /* Page Header */
        .page-header {
            padding: 32px 0 24px;
            background-color: var(--bg);
            border-bottom: 1px solid var(--border);
        }
        .page-header h1 {
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .page-header .lead {
            font-size: 1.05rem;
            color: var(--muted);
            max-width: 780px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* Filter Bar */
        .filter-section {
            padding: 18px 0;
            background-color: var(--surface);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 8px rgba(10, 61, 98, 0.04);
            position: sticky;
            top: 62px;
            z-index: 100;
        }
        .filter-section .form-select,
        .filter-section .form-control {
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            padding: 9px 14px;
            color: var(--text);
            background-color: var(--surface);
            transition: var(--transition);
        }
        .filter-section .form-select:focus,
        .filter-section .form-control:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(22, 165, 163, 0.18);
            outline: none;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.82rem;
            font-weight: 500;
            background-color: var(--surface);
            border: 1px solid var(--border-strong);
            color: var(--muted);
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--accent);
            color: var(--accent);
            background-color: var(--accent-light);
        }
        .filter-tag.active {
            background-color: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        /* Main Content Layout */
        .insight-main {
            padding: 40px 0 70px;
        }
        .insight-list-item {
            display: flex;
            gap: 20px;
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            margin-bottom: 20px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .insight-list-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--border-strong);
        }
        .insight-list-item .item-img {
            flex: 0 0 200px;
            height: 140px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background-color: var(--bg);
        }
        .insight-list-item .item-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .insight-list-item:hover .item-img img {
            transform: scale(1.04);
        }
        .insight-list-item .item-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .item-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
            color: var(--muted);
            margin-bottom: 8px;
        }
        .item-meta .badge-cat {
            background-color: var(--accent-light);
            color: var(--accent);
            padding: 3px 10px;
            border-radius: var(--radius-pill);
            font-size: 0.72rem;
            font-weight: 600;
        }
        .item-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.5;
            transition: var(--transition);
        }
        .insight-list-item:hover .item-title {
            color: var(--primary);
        }
        .item-excerpt {
            font-size: 0.88rem;
            color: var(--muted);
            line-height: 1.75;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .item-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .item-link i {
            transition: var(--transition);
        }
        .item-link:hover {
            color: var(--primary);
        }
        .item-link:hover i {
            transform: translateX(4px);
        }

        /* Sidebar */
        .sidebar-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px;
            margin-bottom: 24px;
            box-shadow: var(--shadow-card);
        }
        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--accent);
            font-size: 0.9rem;
        }
        .hot-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            align-items: flex-start;
        }
        .hot-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .hot-item .hot-rank {
            flex: 0 0 28px;
            height: 28px;
            background-color: var(--accent-light);
            color: var(--accent);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.8rem;
        }
        .hot-item.rank-1 .hot-rank {
            background-color: var(--star);
            color: var(--primary-dark);
        }
        .hot-item.rank-2 .hot-rank {
            background-color: #E8EEF4;
            color: var(--primary);
        }
        .hot-item.rank-3 .hot-rank {
            background-color: #F0E2D0;
            color: #8B5E34;
        }
        .hot-item .hot-body h4 {
            font-size: 0.88rem;
            font-weight: 600;
            margin-bottom: 3px;
            line-height: 1.5;
            transition: var(--transition);
        }
        .hot-item .hot-body h4:hover {
            color: var(--accent);
        }
        .hot-item .hot-body span {
            font-size: 0.75rem;
            color: var(--muted);
        }
        .subscribe-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-md);
            padding: 24px;
            color: #fff;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .subscribe-box .subscribe-icon {
            width: 52px;
            height: 52px;
            background-color: rgba(242, 201, 76, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.4rem;
            color: var(--star);
        }
        .subscribe-box h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .subscribe-box p {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .subscribe-btn {
            display: inline-block;
            background-color: var(--star);
            color: var(--primary-dark);
            padding: 10px 24px;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 700;
            transition: var(--transition);
        }
        .subscribe-btn:hover {
            background-color: #E6B940;
            transform: translateY(-2px);
            color: var(--primary-dark);
        }

        /* Pagination */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            margin-top: 30px;
        }
        .pagination-wrap .page-link {
            border: 1px solid var(--border-strong);
            color: var(--text);
            border-radius: var(--radius-sm) !important;
            margin: 0 4px;
            padding: 9px 16px;
            font-size: 0.88rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .pagination-wrap .page-link:hover {
            background-color: var(--accent-light);
            border-color: var(--accent);
            color: var(--accent);
        }
        .pagination-wrap .page-link.active {
            background-color: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .pagination-wrap .page-link:focus {
            box-shadow: 0 0 0 3px rgba(22, 165, 163, 0.18);
        }

        /* Footer */
        .site-footer {
            background-color: var(--footer-bg);
            color: var(--footer-text);
            padding: 56px 0 30px;
            margin-top: 0;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(220, 233, 245, 0.75);
            line-height: 1.8;
            margin-bottom: 0;
        }
        .site-footer .footer-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 8px;
        }
        .site-footer .footer-links a {
            color: rgba(220, 233, 245, 0.75);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
        }
        .site-footer .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(220, 233, 245, 0.75);
            font-size: 0.85rem;
            margin-bottom: 10px;
        }
        .site-footer .footer-contact-item i {
            color: var(--accent);
            font-size: 0.9rem;
            width: 18px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 36px;
            padding-top: 22px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(220, 233, 245, 0.6);
        }
        .site-footer .footer-bottom a {
            color: rgba(220, 233, 245, 0.6);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }
        .site-footer .footer-beian span {
            font-size: 0.78rem;
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .mobile-bottom-nav {
                display: block;
            }
            .site-footer {
                padding-bottom: 80px;
            }
            .filter-section {
                top: 58px;
            }
            .insight-list-item .item-img {
                flex: 0 0 150px;
                height: 110px;
            }
        }

        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-header {
                padding: 24px 0 16px;
            }
            .page-header h1 {
                font-size: 1.6rem;
            }
            .filter-section {
                position: static;
                box-shadow: none;
                border-bottom: 1px solid var(--border);
                padding: 14px 0;
            }
            .insight-main {
                padding: 24px 0 50px;
            }
            .insight-list-item {
                flex-direction: column;
                gap: 14px;
                padding: 16px;
            }
            .insight-list-item .item-img {
                flex: 0 0 auto;
                height: 180px;
                width: 100%;
            }
            .item-title {
                font-size: 1rem;
            }
            .sidebar-card,
            .subscribe-box {
                padding: 18px;
            }
            .mobile-bottom-nav .tab-item {
                font-size: 0.65rem;
                padding: 3px 6px;
            }
        }

        @media (max-width: 575.98px) {
            .page-header h1 {
                font-size: 1.4rem;
            }
            .page-header .lead {
                font-size: 0.92rem;
            }
            .insight-list-item .item-img {
                height: 150px;
            }
            .pagination-wrap .page-link {
                padding: 7px 12px;
                font-size: 0.8rem;
            }
        }

        /* Decorative star field for page header */
        .page-header {
            position: relative;
            overflow: hidden;
        }
        .page-header::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(22, 165, 163, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-header::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: -30px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(242, 201, 76, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-header .container {
            position: relative;
            z-index: 2;
        }

        /* Section heading style for sidebar */
        .sidebar-card h3 .star-mark {
            color: var(--star);
        }

/* roulang page: category3 */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082C45;
            --accent: #16A5A3;
            --accent-light: rgba(22, 165, 163, 0.12);
            --star: #F2C94C;
            --bg: #F4F8FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --muted: #6B7A8D;
            --border: #E5EDF5;
            --border-strong: #D8E2ED;
            --danger: #D64545;
            --footer-bg: #0A2A3C;
            --footer-text: #DCE9F5;
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(10, 61, 98, 0.08);
            --shadow-card-hover: 0 14px 32px rgba(10, 61, 98, 0.14);
            --transition: all 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            padding-bottom: 70px;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            border-radius: var(--radius-sm);
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        /* Header */
        .site-header {
            background-color: rgba(11, 60, 93, 0.96);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1050;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(10, 61, 98, 0.2);
        }
        .site-header .navbar {
            padding: 12px 0;
        }
        .brand-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.4rem;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }
        .brand-link:hover {
            color: var(--star);
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--star), #E6B940);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1.1rem;
        }
        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.12);
        }
        .nav-cta {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-pill);
            padding: 10px 22px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background-color: #E6B940;
            transform: translateY(-1px);
            color: var(--primary-dark);
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #FFFFFF;
            padding: 6px 10px;
            border-radius: 8px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(242, 201, 76, 0.3);
            outline: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        /* Mobile Bottom Tab */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            z-index: 1049;
            padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
            box-shadow: 0 -4px 16px rgba(10, 61, 98, 0.08);
        }
        .mobile-bottom-nav .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
        }
        .mobile-bottom-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            color: var(--muted);
            font-size: 0.7rem;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .mobile-bottom-nav .tab-item i {
            font-size: 1.1rem;
        }
        .mobile-bottom-nav .tab-item.active {
            color: var(--primary);
        }
        .mobile-bottom-nav .tab-item:hover {
            color: var(--primary);
            background-color: var(--accent-light);
        }
        /* Breadcrumb */
        .breadcrumb-section {
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
        }
        .breadcrumb-section .breadcrumb {
            margin: 0;
            font-size: 0.85rem;
            --bs-breadcrumb-divider-color: var(--muted);
        }
        .breadcrumb-section .breadcrumb a {
            color: var(--muted);
        }
        .breadcrumb-section .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb-section .breadcrumb .active {
            color: var(--primary);
            font-weight: 600;
        }
        /* Page Banner */
        .page-banner {
            background-image: linear-gradient(135deg, rgba(8, 44, 69, 0.92) 0%, rgba(11, 60, 93, 0.88) 60%, rgba(10, 42, 60, 0.94) 100%),
                url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 70px 0 64px;
            position: relative;
            overflow: hidden;
            color: #FFFFFF;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(242, 201, 76, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -5%;
            width: 450px;
            height: 450px;
            background: radial-gradient(circle, rgba(22, 165, 163, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            font-size: clamp(1.8rem, 3.5vw, 2.4rem);
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .page-banner .lead-text {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 780px;
            line-height: 1.9;
        }
        .page-banner .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 20px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .page-banner .banner-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .page-banner .banner-meta i {
            color: var(--star);
        }
        /* Section Blocks */
        .section-block {
            padding: 64px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: clamp(1.4rem, 2.8vw, 1.9rem);
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            line-height: 1.35;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--muted);
            max-width: 720px;
            line-height: 1.9;
        }
        /* Ranking Cards */
        .rank-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .rank-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .rank-card .rank-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-pill);
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }
        .rank-card .rank-number.rank-top1 {
            background-color: rgba(242, 201, 76, 0.18);
            color: #D4A017;
        }
        .rank-card .rank-number.rank-top2 {
            background-color: rgba(168, 200, 220, 0.25);
            color: #5B7A8C;
        }
        .rank-card .rank-number.rank-top3 {
            background-color: rgba(205, 150, 105, 0.2);
            color: #B0764A;
        }
        .rank-card .rank-number.rank-other {
            background-color: var(--accent-light);
            color: var(--accent);
        }
        .rank-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .rank-card .rank-score {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .rank-card .rank-score small {
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--muted);
        }
        .rank-card .rank-desc {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.7;
            margin: 0;
        }
        .rank-card .rank-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            background-color: var(--accent-light);
            color: var(--accent);
            border-radius: var(--radius-pill);
            padding: 4px 12px;
            margin-bottom: 12px;
        }
        /* Progress Bars */
        .progress-wrapper {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
        }
        .progress-wrapper:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .progress-item {
            margin-bottom: 20px;
        }
        .progress-item:last-child {
            margin-bottom: 0;
        }
        .progress-item .progress-label {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
        }
        .progress-item .progress-label span:last-child {
            color: var(--accent);
            font-weight: 700;
            font-size: 0.95rem;
        }
        .progress-item .progress {
            height: 10px;
            background-color: #EDF2F7;
            border-radius: var(--radius-pill);
            overflow: hidden;
        }
        .progress-item .progress .progress-bar {
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: var(--radius-pill);
            transition: width 1.2s ease;
        }
        /* Comparison Table */
        .table-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            overflow-x: auto;
        }
        .table-card .table {
            margin-bottom: 0;
            min-width: 640px;
        }
        .table-card .table thead th {
            background-color: var(--accent-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            border-bottom: 2px solid var(--border-strong);
            padding: 14px 16px;
            white-space: nowrap;
            text-align: center;
        }
        .table-card .table tbody td {
            font-size: 0.9rem;
            padding: 14px 16px;
            border-bottom: 1px solid var(--border);
            color: var(--text);
            text-align: center;
            vertical-align: middle;
        }
        .table-card .table tbody tr:hover {
            background-color: #F0F6FB;
        }
        .table-card .table tbody tr:last-child td {
            border-bottom: none;
        }
        .table-card .table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
        }
        .table-badge {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            background-color: var(--accent-light);
            color: var(--accent);
            border-radius: var(--radius-pill);
            padding: 4px 14px;
        }
        .table-badge.highlight {
            background-color: rgba(242, 201, 76, 0.2);
            color: #D4A017;
        }
        /* Info Note / Explanation */
        .note-box {
            background-color: var(--surface);
            border-left: 4px solid var(--accent);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 28px 28px;
            box-shadow: var(--shadow-card);
            margin-top: 32px;
        }
        .note-box h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }
        .note-box p {
            font-size: 0.95rem;
            color: var(--muted);
            line-height: 1.9;
            margin-bottom: 10px;
        }
        .note-box p:last-child {
            margin-bottom: 0;
        }
        /* Related Recommendations */
        .related-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .related-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .related-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }
        .related-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: var(--transition);
        }
        .related-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 20px 22px;
        }
        .related-card .card-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .related-card .card-body p {
            font-size: 0.88rem;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .related-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.85rem;
            margin-top: 12px;
        }
        .related-card .card-link:hover {
            color: var(--primary);
        }
        /* CTA Section */
        .cta-section {
            background-image: linear-gradient(135deg, rgba(8, 44, 69, 0.95) 0%, rgba(11, 60, 93, 0.9) 100%),
                url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            padding: 64px 0;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(242, 201, 76, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            margin-bottom: 14px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            line-height: 1.9;
            margin-bottom: 24px;
        }
        .btn-primary-custom {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-pill);
            padding: 12px 28px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover {
            background-color: #E6B940;
            transform: translateY(-2px);
            color: var(--primary-dark);
        }
        .btn-secondary-custom {
            background-color: transparent;
            color: #FFFFFF;
            border: 1.5px solid rgba(255, 255, 255, 0.45);
            border-radius: var(--radius-pill);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary-custom:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: #FFFFFF;
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .btn:focus-visible {
            outline: 3px solid rgba(242, 201, 76, 0.5);
            outline-offset: 2px;
        }
        /* Footer */
        .site-footer {
            background-color: var(--footer-bg);
            color: var(--footer-text);
            padding: 56px 0 24px;
            margin-top: 0;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(220, 233, 245, 0.75);
            line-height: 1.8;
            max-width: 320px;
            margin-bottom: 0;
        }
        .site-footer .footer-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 10px;
        }
        .site-footer .footer-links a {
            font-size: 0.85rem;
            color: rgba(220, 233, 245, 0.75);
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: rgba(220, 233, 245, 0.75);
            margin-bottom: 10px;
        }
        .site-footer .footer-contact-item i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding-top: 20px;
            text-align: center;
        }
        .site-footer .footer-bottom p {
            font-size: 0.8rem;
            color: rgba(220, 233, 245, 0.6);
            margin-bottom: 6px;
        }
        .site-footer .footer-bottom a {
            color: rgba(220, 233, 245, 0.7);
            font-size: 0.8rem;
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent);
        }
        .site-footer .footer-beian {
            font-size: 0.78rem;
            color: rgba(220, 233, 245, 0.55);
        }
        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background-color: rgba(11, 60, 93, 0.98);
                border-radius: var(--radius-sm);
                padding: 16px;
                margin-top: 10px;
                border: 1px solid rgba(255, 255, 255, 0.1);
            }
            .navbar-nav {
                gap: 2px !important;
            }
            .nav-cta {
                display: inline-block;
                margin-top: 10px;
                text-align: center;
            }
            .mobile-bottom-nav {
                display: block;
            }
            body {
                padding-bottom: calc(70px + env(safe-area-inset-bottom));
            }
            .section-block {
                padding: 48px 0;
            }
            .page-banner {
                padding: 48px 0 40px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .site-footer {
                padding: 40px 0 80px;
            }
        }
        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner .lead-text {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .rank-card {
                padding: 20px 18px;
            }
            .rank-card .rank-score {
                font-size: 1.3rem;
            }
            .table-card {
                padding: 20px 16px;
            }
            .note-box {
                padding: 20px 18px;
            }
            .related-card .card-body {
                padding: 16px 18px;
            }
        }
        @media (max-width: 519.98px) {
            .page-banner .banner-meta {
                flex-direction: column;
                gap: 8px;
            }
            .mobile-bottom-nav .tab-item {
                font-size: 0.65rem;
                padding: 4px 6px;
            }
            .mobile-bottom-nav .tab-item i {
                font-size: 1rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 5px 12px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082C45;
            --accent: #16A5A3;
            --accent-light: rgba(22, 165, 163, 0.12);
            --star: #F2C94C;
            --bg: #F4F8FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --muted: #6B7A8D;
            --border: #E5EDF5;
            --border-strong: #D8E2ED;
            --danger: #D64545;
            --footer-bg: #0A2A3C;
            --footer-text: #DCE9F5;
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(10, 61, 98, 0.08);
            --shadow-card-hover: 0 14px 32px rgba(10, 61, 98, 0.14);
            --transition: all 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            padding-bottom: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            border-radius: var(--radius-sm);
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== Header ========== */
        .site-header {
            background-color: rgba(11, 60, 93, 0.96);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1050;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(10, 61, 98, 0.2);
        }
        .site-header .navbar {
            padding: 12px 0;
        }
        .brand-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.4rem;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }
        .brand-link:hover {
            color: var(--star);
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--star), #E6B940);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1.1rem;
        }
        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.12);
        }
        .nav-cta {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-pill);
            padding: 10px 22px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background-color: #E6B940;
            transform: translateY(-1px);
            color: var(--primary-dark);
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #FFFFFF;
            padding: 6px 10px;
            border-radius: 8px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(242, 201, 76, 0.3);
            outline: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ========== Mobile Bottom Tab ========== */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            z-index: 1049;
            padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
            box-shadow: 0 -4px 16px rgba(10, 61, 98, 0.08);
        }
        .mobile-bottom-nav .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
        }
        .mobile-bottom-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            color: var(--muted);
            font-size: 0.7rem;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .mobile-bottom-nav .tab-item i {
            font-size: 1.1rem;
        }
        .mobile-bottom-nav .tab-item.active {
            color: var(--primary);
        }
        .mobile-bottom-nav .tab-item:hover {
            color: var(--primary);
            background-color: var(--accent-light);
        }

        /* ========== Category Page Banner ========== */
        .category-banner {
            background-image: linear-gradient(135deg, rgba(8, 44, 69, 0.92) 0%, rgba(11, 60, 93, 0.88) 55%, rgba(10, 42, 60, 0.94) 100%),
                url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            padding: 72px 0 64px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .category-banner::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(242, 201, 76, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: -50%;
            left: -15%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(22, 165, 163, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }
        .breadcrumb-custom a:hover {
            color: var(--star);
        }
        .breadcrumb-custom .sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .breadcrumb-custom .current {
            color: var(--star);
            font-weight: 600;
        }
        .category-banner h1 {
            color: #FFFFFF;
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .category-banner .banner-lead {
            color: rgba(255, 255, 255, 0.82);
            font-size: 1.05rem;
            max-width: 660px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .banner-meta {
            display: flex;
            gap: 24px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .banner-meta span {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .banner-meta i {
            color: var(--star);
            font-size: 0.9rem;
        }

        /* ========== Section Common ========== */
        .section-block {
            padding: 72px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: var(--accent-light);
            color: var(--accent);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .section-desc {
            color: var(--muted);
            font-size: 1rem;
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ========== Timeline ========== */
        .timeline-section {
            background-color: var(--bg);
        }
        .timeline-wrapper {
            position: relative;
            margin-top: 48px;
            padding-left: 24px;
        }
        .timeline-wrapper::before {
            content: '';
            position: absolute;
            left: 7px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--accent), var(--primary), var(--accent));
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding-left: 28px;
            margin-bottom: 40px;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -17px;
            top: 16px;
            width: 16px;
            height: 16px;
            background-color: var(--surface);
            border: 3px solid var(--accent);
            border-radius: 50%;
            box-shadow: 0 0 0 4px rgba(22, 165, 163, 0.15);
            z-index: 2;
        }
        .timeline-item .phase-number {
            position: absolute;
            left: -32px;
            top: 34px;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent);
            background-color: var(--surface);
            padding: 2px 8px;
            border-radius: var(--radius-pill);
            border: 1px solid var(--border);
            white-space: nowrap;
        }
        .timeline-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .timeline-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--border-strong);
        }
        .timeline-card .tc-img {
            flex: 0 0 160px;
            width: 160px;
            height: 120px;
            object-fit: cover;
            border-radius: var(--radius-sm);
        }
        .timeline-card .tc-body {
            flex: 1;
            min-width: 260px;
        }
        .tc-body .tc-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 8px;
        }
        .tc-tags .badge-tag {
            background-color: var(--accent-light);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(22, 165, 163, 0.2);
        }
        .tc-tags .badge-time {
            background-color: rgba(11, 60, 93, 0.08);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            border: 1px solid rgba(11, 60, 93, 0.12);
        }
        .tc-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .tc-body p {
            color: var(--muted);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .tc-body .tc-meta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 0.82rem;
            color: var(--muted);
        }
        .tc-body .tc-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .tc-body .tc-meta i {
            color: var(--accent);
        }

        /* ========== Subscribe CTA ========== */
        .subscribe-section {
            background-color: var(--primary);
            position: relative;
            overflow: hidden;
            padding: 72px 0;
        }
        .subscribe-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(242, 201, 76, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .subscribe-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(22, 165, 163, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .subscribe-section .container {
            position: relative;
            z-index: 2;
        }
        .subscribe-card {
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-md);
            padding: 40px 36px;
            backdrop-filter: blur(6px);
        }
        .subscribe-card h2 {
            color: #FFFFFF;
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .subscribe-card .sub-desc {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 560px;
        }
        .subscribe-form .input-group {
            max-width: 480px;
        }
        .subscribe-form .form-control {
            background-color: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #FFFFFF;
            border-radius: var(--radius-sm) 0 0 var(--radius-sm);
            padding: 12px 18px;
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .subscribe-form .form-control::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .subscribe-form .form-control:focus {
            border-color: var(--star);
            box-shadow: 0 0 0 3px rgba(242, 201, 76, 0.2);
            background-color: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
        }
        .subscribe-form .btn-sub {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            padding: 12px 24px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .subscribe-form .btn-sub:hover {
            background-color: #E6B940;
            transform: translateY(-1px);
        }
        .subscribe-benefits {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 18px;
        }
        .subscribe-benefits span {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.82rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .subscribe-benefits i {
            color: var(--star);
            font-size: 0.85rem;
        }

        /* ========== Related Links ========== */
        .related-section {
            background-color: var(--bg);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 20px;
            margin-top: 36px;
        }
        .related-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }
        .related-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--border-strong);
        }
        .related-card .rc-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            flex-shrink: 0;
            background-color: var(--accent-light);
            color: var(--accent);
        }
        .related-card .rc-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .related-card .rc-body p {
            color: var(--muted);
            font-size: 0.85rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== Footer ========== */
        .site-footer {
            background-color: var(--footer-bg);
            color: var(--footer-text);
            padding: 60px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .footer-brand:hover {
            color: var(--star);
        }
        .footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(220, 233, 245, 0.7);
            max-width: 320px;
        }
        .footer-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: rgba(220, 233, 245, 0.7);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(220, 233, 245, 0.7);
            font-size: 0.88rem;
            margin-bottom: 10px;
        }
        .footer-contact-item i {
            color: var(--accent);
            font-size: 0.9rem;
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(220, 233, 245, 0.55);
        }
        .footer-bottom p {
            margin-bottom: 0;
        }
        .footer-bottom a {
            color: rgba(220, 233, 245, 0.55);
            transition: var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--star);
        }
        .footer-beian {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 4px;
        }

        /* ========== Buttons ========== */
        .btn-primary-custom {
            background-color: var(--primary);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover {
            background-color: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
            box-shadow: var(--shadow-card-hover);
        }
        .btn-primary-custom:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-secondary-custom {
            background-color: var(--surface);
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-secondary-custom:hover {
            background-color: var(--accent-light);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
        }
        .btn-secondary-custom:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ========== Responsive ========== */
        @media (max-width: 991.98px) {
            .mobile-bottom-nav {
                display: block;
            }
            body {
                padding-bottom: 70px;
            }
            .section-block {
                padding: 48px 0;
            }
            .category-banner {
                padding: 48px 0 40px;
            }
            .timeline-wrapper {
                padding-left: 18px;
            }
            .timeline-item {
                padding-left: 20px;
            }
            .timeline-item::before {
                left: -12px;
                width: 14px;
                height: 14px;
                top: 12px;
            }
            .timeline-item .phase-number {
                left: -24px;
                font-size: 0.65rem;
                padding: 1px 6px;
            }
            .timeline-card {
                padding: 18px 20px;
                flex-direction: column;
            }
            .timeline-card .tc-img {
                flex: 0 0 auto;
                width: 100%;
                height: 160px;
            }
            .subscribe-card {
                padding: 28px 22px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .footer-beian {
                justify-content: center;
            }
        }
        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .category-banner h1 {
                font-size: 1.5rem;
            }
            .timeline-wrapper {
                padding-left: 12px;
            }
            .timeline-item {
                padding-left: 16px;
            }
            .timeline-item::before {
                left: -8px;
                width: 12px;
                height: 12px;
                top: 10px;
            }
            .timeline-item .phase-number {
                left: -18px;
                font-size: 0.6rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .subscribe-form .input-group {
                flex-direction: column;
                max-width: 100%;
            }
            .subscribe-form .form-control {
                border-radius: var(--radius-sm);
                margin-bottom: 8px;
            }
            .subscribe-form .btn-sub {
                border-radius: var(--radius-sm);
                width: 100%;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082C45;
            --accent: #16A5A3;
            --accent-light: rgba(22,165,163,0.12);
            --star: #F2C94C;
            --bg: #F4F8FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --muted: #6B7A8D;
            --border: #E5EDF5;
            --border-strong: #D8E2ED;
            --danger: #D64545;
            --footer-bg: #0A2A3C;
            --footer-text: #DCE9F5;
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(10,61,98,0.08);
            --shadow-card-hover: 0 14px 32px rgba(10,61,98,0.14);
            --transition: all 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            border-radius: var(--radius-sm);
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        .site-header {
            background-color: rgba(11,60,93,0.96);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1050;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            box-shadow: 0 4px 20px rgba(10,61,98,0.2);
        }
        .site-header .navbar {
            padding: 12px 0;
        }
        .brand-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.4rem;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }
        .brand-link:hover {
            color: var(--star);
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--star), #E6B940);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1.1rem;
        }
        .navbar-nav .nav-link {
            color: rgba(255,255,255,0.82);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: #FFFFFF;
            background-color: rgba(255,255,255,0.12);
        }
        .nav-cta {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-pill);
            padding: 10px 22px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background-color: #E6B940;
            transform: translateY(-1px);
            color: var(--primary-dark);
        }
        .navbar-toggler {
            border: 1px solid rgba(255,255,255,0.3);
            color: #FFFFFF;
            padding: 6px 10px;
            border-radius: 8px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(242,201,76,0.3);
            outline: none;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: rgba(255,255,255,0.98);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            z-index: 1049;
            padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
            box-shadow: 0 -4px 16px rgba(10,61,98,0.08);
        }
        .mobile-bottom-nav .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
        }
        .mobile-bottom-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            color: var(--muted);
            font-size: 0.7rem;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .mobile-bottom-nav .tab-item i {
            font-size: 1.1rem;
        }
        .mobile-bottom-nav .tab-item.active {
            color: var(--primary);
        }
        .mobile-bottom-nav .tab-item:hover {
            color: var(--primary);
            background-color: var(--accent-light);
        }
        .page-banner {
            background-image: linear-gradient(135deg, rgba(8,44,69,0.95) 0%, rgba(11,60,93,0.9) 60%, rgba(10,42,60,0.94) 100%),
                url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 60px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(242,201,76,0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            --bs-breadcrumb-divider-color: rgba(255,255,255,0.5);
            --bs-breadcrumb-item-active-color: rgba(255,255,255,0.85);
            margin-bottom: 14px;
        }
        .breadcrumb-item a {
            color: rgba(255,255,255,0.75);
        }
        .breadcrumb-item a:hover {
            color: #fff;
        }
        .page-banner h1 {
            color: #FFFFFF;
            font-size: clamp(2rem, 4vw, 2.6rem);
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 14px;
        }
        .page-banner .page-banner-sub {
            color: rgba(255,255,255,0.78);
            max-width: 760px;
            font-size: 1.05rem;
            margin-bottom: 0;
        }
        .section-block {
            padding: 72px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: var(--accent-light);
            color: var(--accent);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2rem);
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .text-muted-strong {
            color: var(--muted);
            font-size: 1rem;
        }
        .encyclopedia-layout {
            display: grid;
            grid-template-columns: 260px 1fr;
            gap: 28px;
            align-items: start;
        }
        .encyclopedia-toc {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 20px;
            position: sticky;
            top: 100px;
        }
        .encyclopedia-toc-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }
        .encyclopedia-toc-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .encyclopedia-toc-list li {
            border-bottom: 1px solid var(--border);
        }
        .encyclopedia-toc-list li:last-child {
            border-bottom: none;
        }
        .encyclopedia-toc-list a {
            display: block;
            padding: 10px 6px;
            color: var(--muted);
            font-weight: 500;
            font-size: 0.95rem;
            border-radius: 8px;
        }
        .encyclopedia-toc-list a:hover {
            color: var(--primary);
            background-color: var(--bg);
            padding-left: 10px;
        }
        .encyclopedia-toc-list a .toc-index {
            display: inline-flex;
            justify-content: center;
            align-items: center;
            width: 22px;
            height: 22px;
            background-color: var(--accent-light);
            color: var(--accent);
            border-radius: 50%;
            font-size: 0.75rem;
            font-weight: 700;
            margin-right: 8px;
        }
        .encyclopedia-content {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .encyclopedia-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 26px;
            scroll-margin-top: 110px;
            transition: var(--transition);
        }
        .encyclopedia-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .encyclopedia-card h2 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .encyclopedia-card h2 i {
            color: var(--accent);
            font-size: 1.2rem;
        }
        .encyclopedia-card p {
            color: #2B3A4A;
            margin-bottom: 10px;
        }
        .encyclopedia-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 14px;
        }
        .badge-soft {
            background-color: var(--bg);
            color: var(--primary);
            border: 1px solid var(--border);
            border-radius: var(--radius-pill);
            padding: 5px 12px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        .gear-highlight {
            background-color: #F0F6FB;
            border-radius: var(--radius-sm);
            padding: 18px;
            margin: 16px 0 0;
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .gear-highlight i {
            color: var(--star);
            font-size: 1.2rem;
            margin-top: 4px;
        }
        .gear-highlight p {
            margin: 0;
            color: var(--text);
            font-size: 0.95rem;
        }
        .rating-bar {
            background-color: #E7EEF5;
            border-radius: 999px;
            height: 8px;
            margin: 8px 0 4px;
        }
        .rating-bar-fill {
            height: 8px;
            border-radius: 999px;
            background-color: var(--accent);
        }
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .recommend-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .recommend-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-radius: 0;
        }
        .recommend-body {
            padding: 18px 20px 20px;
        }
        .recommend-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .recommend-body p {
            color: var(--muted);
            font-size: 0.9rem;
            margin-bottom: 0;
        }
        .accordion-modern .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            background-color: var(--surface);
            box-shadow: 0 4px 14px rgba(10,61,98,0.04);
            overflow: hidden;
        }
        .accordion-modern .accordion-header {
            margin: 0;
        }
        .accordion-modern .accordion-button {
            background-color: var(--surface);
            color: var(--text);
            font-weight: 600;
            padding: 18px 20px;
            font-size: 1rem;
            box-shadow: none;
            border: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .accordion-modern .accordion-button::after {
            display: none;
        }
        .accordion-modern .accordion-button:not(.collapsed) {
            background-color: #F7FAFD;
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-modern .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(22,165,163,0.18);
            border: none;
        }
        .accordion-modern .accordion-body {
            padding: 4px 20px 20px 20px;
            color: #3C4A58;
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .accordion-modern .accordion-icon {
            width: 26px;
            height: 26px;
            background-color: var(--accent-light);
            color: var(--accent);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .accordion-modern .accordion-button:not(.collapsed) .accordion-icon {
            transform: rotate(90deg);
            background-color: rgba(22,165,163,0.2);
        }
        .cta-panel {
            background-color: var(--primary);
            border-radius: var(--radius-md);
            padding: 36px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            color: #fff;
        }
        .cta-panel h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .cta-panel p {
            color: rgba(255,255,255,0.8);
            margin: 0;
        }
        .btn-primary-custom {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-pill);
            padding: 12px 26px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover {
            background-color: #E6B940;
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-outline-custom {
            background-color: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-pill);
            padding: 10px 22px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-outline-custom:hover {
            background-color: var(--accent-light);
            color: var(--primary);
            border-color: var(--accent);
        }
        .site-footer {
            background-color: var(--footer-bg);
            color: var(--footer-text);
            padding: 56px 0 24px;
            margin-top: 0;
        }
        .site-footer a {
            color: var(--footer-text);
        }
        .site-footer a:hover {
            color: var(--accent);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: #ffffff;
        }
        .footer-brand:hover {
            color: var(--star);
        }
        .footer-desc {
            font-size: 0.9rem;
            color: rgba(220,233,245,0.75);
            margin-top: 10px;
        }
        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 0.9rem;
            color: rgba(220,233,245,0.8);
        }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: rgba(220,233,245,0.8);
        }
        .footer-contact-item i {
            color: var(--star);
            width: 18px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top: 30px;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(220,233,245,0.65);
        }
        .footer-beian {
            margin-bottom: 6px;
        }
        @media (max-width: 991.98px) {
            .encyclopedia-layout {
                grid-template-columns: 1fr;
            }
            .encyclopedia-toc {
                position: static;
                order: 2;
            }
            .encyclopedia-content {
                order: 1;
            }
            .recommend-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767.98px) {
            .section-block {
                padding: 48px 0;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
            .page-banner {
                padding: 40px 0 36px;
            }
            .cta-panel {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .encyclopedia-card {
                padding: 18px;
            }
            .cta-panel {
                padding: 24px;
            }
        }
        @media (max-width: 991.98px) {
            .mobile-bottom-nav {
                display: block;
            }
            body {
                padding-bottom: 70px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082C45;
            --accent: #16A5A3;
            --accent-light: rgba(22, 165, 163, 0.12);
            --star: #F2C94C;
            --bg: #F4F8FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --muted: #6B7A8D;
            --border: #E5EDF5;
            --border-strong: #D8E2ED;
            --danger: #D64545;
            --footer-bg: #0A2A3C;
            --footer-text: #DCE9F5;
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(10, 61, 98, 0.08);
            --shadow-card-hover: 0 14px 32px rgba(10, 61, 98, 0.14);
            --transition: all 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

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

        img {
            max-width: 100%;
            border-radius: var(--radius-sm);
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header */
        .site-header {
            background-color: rgba(11, 60, 93, 0.96);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1050;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(10, 61, 98, 0.2);
        }

        .site-header .navbar {
            padding: 12px 0;
        }

        .brand-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.4rem;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }

        .brand-link:hover {
            color: var(--star);
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--star), #E6B940);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1.1rem;
        }

        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.12);
        }

        .nav-cta {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-pill);
            padding: 10px 22px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background-color: #E6B940;
            transform: translateY(-1px);
            color: var(--primary-dark);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #FFFFFF;
            padding: 6px 10px;
            border-radius: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(242, 201, 76, 0.3);
            outline: none;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Mobile Bottom Tab */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            z-index: 1049;
            padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
            box-shadow: 0 -4px 16px rgba(10, 61, 98, 0.08);
        }

        .mobile-bottom-nav .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
        }

        .mobile-bottom-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            color: var(--muted);
            font-size: 0.7rem;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .mobile-bottom-nav .tab-item i {
            font-size: 1.1rem;
        }

        .mobile-bottom-nav .tab-item.active {
            color: var(--primary);
        }

        .mobile-bottom-nav .tab-item:hover {
            color: var(--primary);
            background-color: var(--accent-light);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 24px 0 0;
        }

        .breadcrumb-section .breadcrumb {
            margin-bottom: 0;
            font-size: 0.9rem;
        }

        .breadcrumb-section .breadcrumb-item a {
            color: var(--muted);
        }

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

        .breadcrumb-section .breadcrumb-item.active {
            color: var(--primary);
            font-weight: 600;
        }

        /* Page Header */
        .page-header {
            padding: 48px 0 40px;
            background-image: linear-gradient(135deg, rgba(8, 44, 69, 0.94) 0%, rgba(11, 60, 93, 0.9) 55%, rgba(10, 42, 60, 0.93) 100%),
                url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .page-header::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -15%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(242, 201, 76, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-header .container {
            position: relative;
            z-index: 2;
        }

        .page-header h1 {
            font-size: clamp(1.9rem, 3.5vw, 2.5rem);
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
            color: #FFFFFF;
        }

        .page-header .lead {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 780px;
            margin-bottom: 0;
            line-height: 1.8;
        }

        /* Filter Bar */
        .filter-section {
            padding: 32px 0 20px;
        }

        .filter-bar {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
        }

        .filter-group {
            margin-bottom: 8px;
        }

        .filter-group:last-child {
            margin-bottom: 0;
        }

        .filter-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--muted);
            margin-right: 12px;
            min-width: 56px;
            display: inline-block;
        }

        .filter-btn {
            background: none;
            border: 1px solid var(--border);
            color: var(--text);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            font-size: 0.85rem;
            font-weight: 500;
            margin: 4px 6px 4px 0;
            transition: var(--transition);
            cursor: pointer;
        }

        .filter-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
            background-color: var(--accent-light);
        }

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

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

        /* Gallery Grid */
        .gallery-section {
            padding: 28px 0 60px;
        }

        .gallery-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .gallery-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--border-strong);
        }

        .gallery-card .card-img-wrapper {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
        }

        .gallery-card .card-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }

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

        .gallery-card .tag-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background-color: rgba(11, 60, 93, 0.85);
            color: #FFFFFF;
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            font-size: 0.75rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        .gallery-card .download-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background-color: rgba(242, 201, 76, 0.9);
            color: var(--primary-dark);
            border-radius: var(--radius-pill);
            padding: 4px 12px;
            font-size: 0.75rem;
            font-weight: 700;
        }

        .gallery-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .gallery-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .gallery-card .card-text {
            font-size: 0.88rem;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .gallery-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.78rem;
            color: var(--muted);
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }

        .gallery-card .card-meta i {
            color: var(--accent);
            margin-right: 4px;
        }

        .btn-download {
            background-color: var(--primary);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 20px;
            font-size: 0.88rem;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            align-self: flex-start;
        }

        .btn-download:hover {
            background-color: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

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

        .btn-outline-download {
            background: none;
            border: 1px solid var(--primary);
            color: var(--primary);
            border-radius: var(--radius-sm);
            padding: 9px 18px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .btn-outline-download:hover {
            background-color: var(--accent-light);
            color: var(--primary);
            border-color: var(--accent);
        }

        /* Resource Bundle */
        .resource-section {
            padding: 48px 0 60px;
            background-color: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .resource-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            height: 100%;
            transition: var(--transition);
        }

        .resource-card:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-card);
        }

        .resource-card .resource-icon {
            width: 48px;
            height: 48px;
            background: var(--accent-light);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.3rem;
            margin-bottom: 14px;
        }

        .resource-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .resource-card p {
            font-size: 0.88rem;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        /* CTA Section */
        .cta-section {
            padding: 64px 0;
            background-image: linear-gradient(135deg, rgba(8, 44, 69, 0.95) 0%, rgba(11, 60, 93, 0.92) 100%),
                url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            color: #FFFFFF;
            border-radius: var(--radius-md);
            margin: 48px 0 60px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(242, 201, 76, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            color: #FFFFFF;
            font-size: clamp(1.5rem, 2.5vw, 1.9rem);
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 1rem;
            margin-bottom: 24px;
            max-width: 640px;
        }

        .btn-cta-gold {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-pill);
            padding: 12px 28px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-cta-gold:hover {
            background-color: #E6B940;
            transform: translateY(-2px);
            color: var(--primary-dark);
        }

        .btn-cta-outline {
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #FFFFFF;
            border-radius: var(--radius-pill);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-cta-outline:hover {
            background-color: rgba(255, 255, 255, 0.12);
            border-color: #FFFFFF;
            color: #FFFFFF;
        }

        /* Footer */
        .site-footer {
            background-color: var(--footer-bg);
            color: var(--footer-text);
            padding: 56px 0 28px;
            margin-top: 20px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: #FFFFFF;
            margin-bottom: 14px;
        }

        .footer-brand:hover {
            color: var(--star);
        }

        .footer-desc {
            font-size: 0.88rem;
            color: rgba(220, 233, 245, 0.7);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

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

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: rgba(220, 233, 245, 0.72);
            font-size: 0.88rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
        }

        .footer-contact-item {
            font-size: 0.88rem;
            color: rgba(220, 233, 245, 0.72);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact-item i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 40px;
            padding-top: 20px;
            font-size: 0.82rem;
            color: rgba(220, 233, 245, 0.6);
        }

        .footer-bottom p {
            margin-bottom: 6px;
        }

        .footer-bottom a {
            color: rgba(220, 233, 245, 0.6);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        .footer-beian span {
            font-size: 0.8rem;
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .mobile-bottom-nav {
                display: block;
            }
            body {
                padding-bottom: 64px;
            }
            .site-header .navbar {
                padding: 10px 0;
            }
            .page-header {
                padding: 40px 0 32px;
            }
            .gallery-section {
                padding: 20px 0 40px;
            }
            .resource-section {
                padding: 36px 0 40px;
            }
            .filter-bar {
                padding: 16px 18px;
            }
            .filter-label {
                min-width: 48px;
                font-size: 0.8rem;
            }
            .filter-btn {
                padding: 5px 12px;
                font-size: 0.78rem;
            }
            .cta-section {
                padding: 48px 24px;
                margin: 36px 16px 40px;
                border-radius: var(--radius-sm);
            }
        }

        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-header h1 {
                font-size: 1.6rem;
            }
            .page-header .lead {
                font-size: 0.95rem;
            }
            .gallery-card .card-body {
                padding: 16px 18px 18px;
            }
            .gallery-card .card-title {
                font-size: 1rem;
            }
            .gallery-card .card-text {
                font-size: 0.82rem;
            }
            .btn-download {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .btn-outline-download {
                padding: 7px 14px;
                font-size: 0.78rem;
            }
            .resource-card {
                padding: 18px;
            }
            .resource-card h3 {
                font-size: 0.95rem;
            }
            .resource-card p {
                font-size: 0.82rem;
            }
            .cta-section h2 {
                font-size: 1.35rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .btn-cta-gold,
            .btn-cta-outline {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
            .filter-group {
                margin-bottom: 8px;
            }
            .filter-label {
                display: block;
                margin-bottom: 4px;
            }
        }

        @media (max-width: 575.98px) {
            .gallery-card .card-img-wrapper {
                aspect-ratio: 16 / 10;
            }
            .gallery-card .card-meta {
                flex-wrap: wrap;
                gap: 8px;
                font-size: 0.72rem;
            }
            .footer-bottom {
                text-align: center;
            }
            .footer-beian span {
                display: inline-block;
                margin: 0 2px;
            }
        }

/* roulang page: category7 */
:root {
            --primary: #0B3C5D;
            --primary-dark: #082C45;
            --accent: #16A5A3;
            --accent-light: rgba(22, 165, 163, 0.12);
            --star: #F2C94C;
            --bg: #F4F8FC;
            --surface: #FFFFFF;
            --text: #1F2A36;
            --muted: #6B7A8D;
            --border: #E5EDF5;
            --border-strong: #D8E2ED;
            --danger: #D64545;
            --footer-bg: #0A2A3C;
            --footer-text: #DCE9F5;
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(10, 61, 98, 0.08);
            --shadow-card-hover: 0 14px 32px rgba(10, 61, 98, 0.14);
            --transition: all 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            padding-bottom: 70px;
        }

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

        img {
            max-width: 100%;
            border-radius: var(--radius-sm);
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header */
        .site-header {
            background-color: rgba(11, 60, 93, 0.96);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1050;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(10, 61, 98, 0.2);
        }

        .site-header .navbar {
            padding: 12px 0;
        }

        .brand-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.4rem;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }

        .brand-link:hover {
            color: var(--star);
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--star), #E6B940);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 1.1rem;
        }

        .navbar-nav .nav-link {
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: #FFFFFF;
            background-color: rgba(255, 255, 255, 0.12);
        }

        .nav-cta {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-pill);
            padding: 10px 22px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background-color: #E6B940;
            transform: translateY(-1px);
            color: var(--primary-dark);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #FFFFFF;
            padding: 6px 10px;
            border-radius: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(242, 201, 76, 0.3);
            outline: none;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Mobile Bottom Tab */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            z-index: 1049;
            padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
            box-shadow: 0 -4px 16px rgba(10, 61, 98, 0.08);
        }

        .mobile-bottom-nav .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
        }

        .mobile-bottom-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            color: var(--muted);
            font-size: 0.7rem;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .mobile-bottom-nav .tab-item i {
            font-size: 1.1rem;
        }

        .mobile-bottom-nav .tab-item.active {
            color: var(--primary);
        }

        .mobile-bottom-nav .tab-item:hover {
            color: var(--primary);
            background-color: var(--accent-light);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            background-color: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
            margin-top: 0;
        }

        .breadcrumb-section .breadcrumb {
            margin: 0;
            font-size: 0.88rem;
            color: var(--muted);
        }

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

        .breadcrumb-section .breadcrumb-item a:hover {
            color: var(--accent);
        }

        .breadcrumb-section .breadcrumb-item.active {
            color: var(--muted);
        }

        /* Page Hero */
        .page-hero {
            background-image: linear-gradient(135deg, rgba(8, 44, 69, 0.93) 0%, rgba(11, 60, 93, 0.88) 60%, rgba(10, 42, 60, 0.92) 100%),
                url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            padding: 60px 0 56px;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -15%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(242, 201, 76, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .page-hero h1 {
            color: #FFFFFF;
            font-size: clamp(1.9rem, 3.5vw, 2.5rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .page-hero .hero-sub {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* Buttons */
        .btn-primary-custom {
            background-color: var(--primary);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-custom:hover {
            background-color: var(--primary-dark);
            transform: translateY(-1px);
            color: #FFFFFF;
        }

        .btn-primary-custom:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-primary-custom:active {
            transform: scale(0.98);
        }

        .btn-accent-custom {
            background-color: var(--accent);
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-accent-custom:hover {
            background-color: #128A88;
            transform: translateY(-1px);
            color: #FFFFFF;
        }

        .btn-outline-custom {
            background-color: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 10px 26px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-custom:hover {
            background-color: var(--accent-light);
            border-color: var(--accent);
            color: var(--accent);
        }

        .btn-outline-custom:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        /* Cards */
        .card-custom {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            overflow: hidden;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .card-custom .card-body-custom {
            padding: 24px;
        }

        /* Tool Entry Cards */
        .tool-entry-grid {
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }

        .tool-entry-card {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            cursor: pointer;
        }

        .tool-entry-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-6px);
        }

        .tool-entry-card .tool-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .tool-entry-card .tool-icon.icon-primary {
            background-color: rgba(11, 60, 93, 0.1);
            color: var(--primary);
        }

        .tool-entry-card .tool-icon.icon-accent {
            background-color: var(--accent-light);
            color: var(--accent);
        }

        .tool-entry-card .tool-icon.icon-star {
            background-color: rgba(242, 201, 76, 0.15);
            color: #D4A82A;
        }

        .tool-entry-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .tool-entry-card p {
            font-size: 0.9rem;
            color: var(--muted);
            margin-bottom: 18px;
            line-height: 1.7;
            flex-grow: 1;
        }

        .tool-entry-card .btn-link-custom {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .tool-entry-card .btn-link-custom:hover {
            color: var(--accent);
        }

        /* Form Section */
        .form-section {
            padding: 70px 0;
        }

        .form-section .form-wrapper {
            background-color: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            padding: 40px;
        }

        .form-section .form-wrapper .form-label {
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--text);
        }

        .form-section .form-wrapper .form-control,
        .form-section .form-wrapper .form-select {
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 0.95rem;
            transition: var(--transition);
            background-color: var(--surface);
            color: var(--text);
        }

        .form-section .form-wrapper .form-control:focus,
        .form-section .form-wrapper .form-select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(16, 165, 163, 0.18);
            outline: none;
        }

        .form-section .form-wrapper .form-control.is-invalid {
            border-color: var(--danger);
        }

        .form-section .form-wrapper .form-control.is-invalid:focus {
            box-shadow: 0 0 0 3px rgba(214, 69, 69, 0.15);
        }

        .form-section .form-wrapper .invalid-feedback {
            color: var(--danger);
            font-size: 0.82rem;
            margin-top: 4px;
        }

        /* Info Cards */
        .info-card-section {
            padding: 70px 0;
            background-color: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .info-card-section .info-card {
            background-color: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            height: 100%;
            transition: var(--transition);
        }

        .info-card-section .info-card:hover {
            box-shadow: var(--shadow-card);
            border-color: var(--border-strong);
        }

        .info-card-section .info-card .info-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 14px;
        }

        .info-card-section .info-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .info-card-section .info-card p {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* CTA Section */
        .cta-section {
            padding: 70px 0;
            background-image: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(242, 201, 76, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            color: #FFFFFF;
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 700;
            margin-bottom: 14px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 1rem;
            max-width: 640px;
            margin-bottom: 24px;
        }

        .cta-section .btn-star-custom {
            background-color: var(--star);
            color: var(--primary-dark);
            border: none;
            border-radius: var(--radius-pill);
            padding: 14px 32px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .cta-section .btn-star-custom:hover {
            background-color: #E6B940;
            transform: translateY(-2px);
            color: var(--primary-dark);
        }

        /* Footer */
        .site-footer {
            background-color: var(--footer-bg);
            color: var(--footer-text);
            padding: 60px 0 30px;
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .site-footer .footer-brand:hover {
            color: var(--star);
        }

        .site-footer .footer-desc {
            font-size: 0.88rem;
            color: rgba(220, 233, 245, 0.7);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .site-footer .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

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

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

        .site-footer .footer-links a {
            font-size: 0.88rem;
            color: rgba(220, 233, 245, 0.7);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .site-footer .footer-links a:hover {
            color: var(--star);
            transform: translateX(3px);
        }

        .site-footer .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.88rem;
            color: rgba(220, 233, 245, 0.7);
            margin-bottom: 12px;
        }

        .site-footer .footer-contact-item i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }

        .site-footer .footer-bottom p {
            font-size: 0.82rem;
            color: rgba(220, 233, 245, 0.6);
            margin: 0;
        }

        .site-footer .footer-bottom .footer-beian {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .site-footer .footer-bottom a {
            color: rgba(220, 233, 245, 0.6);
        }

        .site-footer .footer-bottom a:hover {
            color: var(--star);
        }

        .site-footer .footer-bottom .mx-2 {
            margin-left: 8px;
            margin-right: 8px;
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .mobile-bottom-nav {
                display: block;
            }
            body {
                padding-bottom: 80px;
            }
            .site-header .navbar-collapse {
                background-color: var(--primary-dark);
                border-radius: 0 0 16px 16px;
                padding: 16px;
                margin-top: 12px;
            }
            .navbar-nav .nav-link {
                padding: 12px 16px;
                font-size: 1rem;
            }
            .nav-cta {
                display: none;
            }
            .site-header .navbar-collapse .nav-cta-mobile {
                display: block;
            }
        }

        @media (min-width: 992px) {
            .nav-cta-mobile {
                display: none;
            }
        }

        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-hero {
                padding: 40px 0 36px;
            }
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .page-hero .hero-sub {
                font-size: 0.95rem;
            }
            .form-section .form-wrapper {
                padding: 24px 20px;
            }
            .tool-entry-card {
                padding: 20px 18px;
            }
            .tool-entry-card .tool-icon {
                width: 52px;
                height: 52px;
                font-size: 1.3rem;
                border-radius: 14px;
            }
            .info-card-section,
            .form-section,
            .cta-section {
                padding: 48px 0;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .site-footer .footer-bottom .footer-beian {
                flex-wrap: wrap;
                justify-content: center;
            }
        }

        @media (max-width: 575.98px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .tool-entry-card h3 {
                font-size: 1rem;
            }
            .tool-entry-card p {
                font-size: 0.85rem;
            }
            .btn-primary-custom,
            .btn-accent-custom,
            .btn-outline-custom,
            .cta-section .btn-star-custom {
                width: 100%;
                justify-content: center;
                padding-left: 16px;
                padding-right: 16px;
                font-size: 0.9rem;
            }
            .form-section .form-wrapper {
                border-radius: 14px;
            }
        }