/* roulang page: index */
:root {
    --color-brand: #06b6d4;
    --color-brand-light: #22d3ee;
    --color-brand-dark: #0891b2;
    --color-accent: #a855f7;
    --color-bg: #0a0e17;
    --color-bg-soft: #111827;
    --color-bg-card: #1c2536;
    --color-text: #f9fafb;
    --color-text-weak: #9ca3af;
    --color-border: rgba(148, 163, 184, 0.15);
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-card: 0 20px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(6, 182, 212, 0.25);
    --transition: all 0.3s ease;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

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

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

  button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
  }

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  /* ===== Header / Nav ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: linear-gradient(180deg, rgba(7, 11, 18, 0.98) 0%, rgba(10, 14, 23, 0.95) 100%);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
  }

  .site-header::after {
    content: "";
    display: block;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-brand), var(--color-accent), transparent);
    opacity: 0.7;
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
  }

  .logo {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: #fff;
    background: linear-gradient(135deg, var(--color-brand-light), var(--color-brand));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 24px rgba(6, 182, 212, 0.3);
    white-space: nowrap;
  }

  .logo i {
    -webkit-text-fill-color: var(--color-brand);
    margin-right: 6px;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .nav-link {
    position: relative;
    padding: 10px 18px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-weak);
    border-radius: 999px;
    transition: var(--transition);
  }

  .nav-link:hover {
    color: #fff;
    background: rgba(6, 182, 212, 0.08);
  }

  .nav-link.active {
    color: #fff;
    background: rgba(6, 182, 212, 0.12);
    box-shadow: inset 0 0 0 1px rgba(6, 182, 212, 0.3);
  }

  .nav-link.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 2px;
    transform: translateX(-50%);
    width: 18px;
    height: 3px;
    border-radius: 3px;
    background: var(--color-brand);
    box-shadow: 0 0 8px var(--color-brand);
  }

  .nav-cta {
    margin-left: 8px;
  }

  .menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    color: #fff;
    font-size: 1.1rem;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
  }

  .menu-toggle:hover {
    border-color: var(--color-brand);
    box-shadow: 0 0 12px rgba(6, 182, 212, 0.2);
  }

  .mobile-nav {
    display: none;
    padding: 12px 0 18px;
    border-top: 1px solid var(--color-border);
  }

  .mobile-nav a {
    display: block;
    padding: 12px 16px;
    border-radius: 12px;
    color: var(--color-text-weak);
    font-weight: 500;
  }

  .mobile-nav a:hover,
  .mobile-nav a.active {
    color: var(--color-brand-light);
    background: rgba(6, 182, 212, 0.08);
  }

  /* ===== Buttons ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--color-brand), var(--color-brand-dark));
    color: #fff;
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.25);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(6, 182, 212, 0.4);
  }

  .btn-outline {
    border-color: rgba(6, 182, 212, 0.5);
    color: var(--color-brand-light);
    background: transparent;
  }

  .btn-outline:hover {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--color-brand);
    transform: translateY(-2px);
  }

  .btn:focus-visible,
  .nav-link:focus-visible,
  a:focus-visible {
    outline: 2px solid var(--color-brand-light);
    outline-offset: 3px;
  }

  /* ===== Hero ===== */
  .hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 100px 0;
  }

  .hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, rgba(7, 11, 18, 0.92) 30%, rgba(10, 14, 23, 0.65) 60%, rgba(10, 14, 23, 0.35) 100%);
    z-index: 1;
  }

  .hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--color-brand-light);
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.3);
    margin-bottom: 24px;
  }

  .hero h1 {
    font-size: clamp(2.2rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: 0.01em;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, var(--color-brand-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .hero p {
    font-size: 1.1rem;
    color: rgba(226, 232, 240, 0.85);
    max-width: 640px;
    margin-bottom: 36px;
  }

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

  .hero-stats {
    display: flex;
    gap: 30px;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid rgba(148, 163, 184, 0.15);
  }

  .hero-stats .hs-item {
    font-size: 1.6rem;
    font-weight: 700;
    color: #fff;
  }

  .hero-stats .hs-item small {
    display: block;
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--color-text-weak);
    margin-top: 2px;
  }

  /* ===== Section ===== */
  .section {
    padding: 100px 0;
  }

  .section-alt {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-soft) 100%);
  }

  .section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 60px;
  }

  .section-tag {
    display: inline-block;
    padding: 5px 16px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-brand-light);
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.2);
    margin-bottom: 18px;
    letter-spacing: 0.06em;
  }

  .section-head h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 14px;
    color: #fff;
  }

  .section-head p {
    color: var(--color-text-weak);
    font-size: 1rem;
  }

  /* ===== About / Feature ===== */
  .about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
  }

  .about-media {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
  }

  .about-media img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    transition: transform 0.6s ease;
  }

  .about-media:hover img {
    transform: scale(1.03);
  }

  .about-content h2 {
    font-size: 1.9rem;
    font-weight: 700;
    margin-bottom: 18px;
    line-height: 1.3;
  }

  .about-content p {
    color: var(--color-text-weak);
    margin-bottom: 16px;
  }

  .feature-list {
    margin-top: 24px;
    display: grid;
    gap: 12px;
  }

  .feature-item {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    background: var(--color-bg-soft);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
  }

  .feature-item:hover {
    border-color: rgba(6, 182, 212, 0.4);
    transform: translateX(4px);
  }

  .feature-item i {
    color: var(--color-brand-light);
    font-size: 1.1rem;
    margin-top: 4px;
  }

  .feature-item strong {
    display: block;
    font-size: 0.98rem;
    margin-bottom: 4px;
    color: #fff;
  }

  .feature-item span {
    font-size: 0.9rem;
    color: var(--color-text-weak);
  }

  /* ===== Cards ===== */
  .cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .feature-card {
    background: var(--color-bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    padding: 30px 26px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
  }

  .feature-card::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -50%;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.18), transparent 70%);
    opacity: 0.6;
    transition: var(--transition);
  }

  .feature-card:hover {
    transform: translateY(-6px);
    border-color: rgba(6, 182, 212, 0.4);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  }

  .feature-card:hover::before {
    transform: scale(1.6);
    opacity: 1;
  }

  .feature-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    font-size: 1.3rem;
    color: var(--color-brand-light);
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    margin-bottom: 20px;
  }

  .feature-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #fff;
  }

  .feature-card p {
    font-size: 0.92rem;
    color: var(--color-text-weak);
  }

  /* ===== Categories ===== */
  .category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

  .category-card {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    min-height: 320px;
    display: flex;
    align-items: flex-end;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
    transition: var(--transition);
  }

  .category-card img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    transition: transform 0.6s ease;
  }

  .category-card:hover img {
    transform: scale(1.05);
  }

  .category-card .gradient-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10, 14, 23, 0.2) 0%, rgba(10, 14, 23, 0.95) 100%);
    z-index: 1;
  }

  .category-card-body {
    position: relative;
    z-index: 2;
    padding: 28px;
    width: 100%;
  }

  .category-card-body .badge {
    margin-bottom: 10px;
  }

  .category-card-body h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #fff;
  }

  .category-card-body p {
    font-size: 0.92rem;
    color: rgba(226, 232, 240, 0.75);
    margin-bottom: 16px;
    max-width: 400px;
  }

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

  .category-card-body .card-link i {
    transition: transform 0.3s ease;
  }

  .category-card:hover .card-link i {
    transform: translateX(4px);
  }

  /* ===== Badge ===== */
  .badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-brand-light);
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.25);
  }

  /* ===== Stats ===== */
  .stats-section {
    background: linear-gradient(135deg, var(--color-bg-soft), var(--color-bg-card));
    border-block: 1px solid var(--color-border);
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
    padding: 24px 0;
  }

  .stat-item {
    padding: 20px;
  }

  .stat-number {
    font-size: 2.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-brand-light), var(--color-brand-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
  }

  .stat-label {
    font-size: 0.92rem;
    color: var(--color-text-weak);
    margin-top: 6px;
  }

  /* ===== News ===== */
  .news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .news-card {
    background: var(--color-bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    padding: 28px;
    transition: var(--transition);
    display: block;
  }

  .news-card:hover {
    transform: translateY(-4px);
    border-color: rgba(6, 182, 212, 0.3);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.3);
  }

  .news-card .badge {
    margin-bottom: 14px;
  }

  .news-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 10px;
    line-height: 1.5;
  }

  .news-card h3 a:hover {
    color: var(--color-brand-light);
  }

  .news-card p {
    font-size: 0.9rem;
    color: var(--color-text-weak);
    margin-bottom: 18px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .news-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
    font-size: 0.85rem;
    color: var(--color-text-weak);
  }

  .news-card-meta .read-more {
    color: var(--color-brand-light);
    font-weight: 500;
  }

  .empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    background: var(--color-bg-soft);
    border-radius: var(--radius);
    border: 1px dashed var(--color-border);
    color: var(--color-text-weak);
    font-size: 1rem;
  }

  /* ===== Process ===== */
  .process-section {
    position: relative;
    background-size: cover;
    background-position: center;
  }

  .process-section .process-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 14, 23, 0.88);
    z-index: 0;
  }

  .process-section .container {
    position: relative;
    z-index: 1;
  }

  .process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  .step-item {
    text-align: center;
    padding: 32px 20px;
    background: rgba(28, 37, 54, 0.7);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    backdrop-filter: blur(8px);
    transition: var(--transition);
  }

  .step-item:hover {
    transform: translateY(-6px);
    border-color: rgba(6, 182, 212, 0.4);
    box-shadow: var(--shadow-glow);
  }

  .step-number {
    width: 48px;
    height: 48px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-brand-light);
    background: rgba(6, 182, 212, 0.12);
    border: 1px solid rgba(6, 182, 212, 0.3);
  }

  .step-item h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 8px;
  }

  .step-item p {
    font-size: 0.85rem;
    color: var(--color-text-weak);
  }

  /* ===== FAQ ===== */
  .faq-wrap {
    max-width: 800px;
    margin: 0 auto;
  }

  .faq-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
  }

  .faq-item:hover {
    border-color: rgba(6, 182, 212, 0.25);
  }

  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    font-size: 0.98rem;
    font-weight: 500;
    color: #fff;
    text-align: left;
    transition: var(--transition);
  }

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

  .faq-question i {
    color: var(--color-brand-light);
    font-size: 0.8rem;
    transition: transform 0.3s ease;
  }

  .faq-item.open .faq-question i {
    transform: rotate(180deg);
  }

  .faq-question:focus-visible {
    outline: 2px solid var(--color-brand-light);
    outline-offset: -2px;
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    padding: 0 24px;
    font-size: 0.92rem;
    color: var(--color-text-weak);
    line-height: 1.8;
  }

  .faq-item.open .faq-answer {
    max-height: 200px;
    padding-bottom: 22px;
  }

  /* ===== CTA ===== */
  .cta-section {
    position: relative;
    padding: 90px 0;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
  }

  .cta-section .cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(6, 182, 212, 0.15), rgba(10, 14, 23, 0.9));
    z-index: 0;
  }

  .cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 680px;
    margin: 0 auto;
  }

  .cta-content h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
  }

  .cta-content p {
    font-size: 1.05rem;
    color: rgba(226, 232, 240, 0.8);
    margin-bottom: 30px;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: var(--color-bg-soft);
    border-top: 1px solid var(--color-border);
    padding: 50px 0 30px;
  }

  .footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--color-border);
  }

  .footer-brand .logo {
    font-size: 1.2rem;
    margin-bottom: 12px;
  }

  .footer-brand p {
    font-size: 0.9rem;
    color: var(--color-text-weak);
    max-width: 300px;
  }

  .footer-col h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
  }

  .footer-col a {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text-weak);
    padding: 5px 0;
  }

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

  .footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 26px;
    font-size: 0.85rem;
    color: var(--color-text-weak);
  }

  .footer-bottom a {
    color: var(--color-brand-light);
  }

  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    .cards-grid {
      grid-template-columns: repeat(2, 1fr);
    }

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

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

  @media (max-width: 768px) {
    .section {
      padding: 70px 0;
    }

    .main-nav {
      display: none;
    }

    .menu-toggle {
      display: flex;
    }

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

    .mobile-nav {
      display: none;
    }

    .about-grid {
      grid-template-columns: 1fr;
      gap: 30px;
    }

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

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

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

    .hero {
      min-height: 520px;
      padding: 70px 0;
    }

    .hero-stats {
      flex-wrap: wrap;
    }

    .cta-section {
      padding: 60px 0;
    }
  }

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

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

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

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

    .logo {
      font-size: 1.1rem;
    }

    .hero h1 {
      font-size: 1.9rem;
    }

    .hero p {
      font-size: 0.98rem;
    }

    .hero-actions .btn {
      width: 100%;
    }

    .footer-bottom {
      flex-direction: column;
      text-align: center;
    }
  }

/* roulang page: article */
:root {
  --primary: #00e5a0;
  --primary-dark: #00b87d;
  --accent: #00d9ff;
  --pink: #ff2d78;
  --dark: #0a0e17;
  --dark-card: #111a28;
  --dark-soft: #1a2436;
  --body-bg: #f4f6fb;
  --card-bg: #ffffff;
  --text: #1a1d29;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(10, 14, 23, 0.08);
  --shadow-lg: 0 12px 40px rgba(10, 14, 23, 0.14);
  --glow: 0 0 24px rgba(0, 229, 160, 0.35);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--body-bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: all .25s ease; }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font: inherit; }
input, textarea, select { font: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Header & Nav ===== */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: linear-gradient(135deg, #070b14 0%, #0d1524 100%);
  border-bottom: 1px solid rgba(0, 229, 160, 0.18);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
}
.site-header::after {
  content: ""; display: block; height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--pink));
  opacity: 0.7;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px; gap: 20px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 22px; font-weight: 800; color: #fff;
  letter-spacing: 0.5px; white-space: nowrap;
}
.logo i {
  color: var(--primary);
  font-size: 26px;
  filter: drop-shadow(0 0 8px rgba(0, 229, 160, 0.5));
}
.logo span {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.main-nav {
  display: flex; align-items: center; gap: 8px;
}
.nav-link {
  display: block; padding: 8px 16px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 15px; font-weight: 500;
  border-radius: 8px;
  position: relative;
  transition: all .25s ease;
}
.nav-link:hover {
  color: #ffffff;
  background: rgba(0, 229, 160, 0.08);
}
.nav-link.active {
  color: var(--primary);
  background: rgba(0, 229, 160, 0.1);
  text-shadow: 0 0 16px rgba(0, 229, 160, 0.45);
}
.nav-link.active::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px;
  height: 2px; background: var(--primary);
  border-radius: 2px;
  box-shadow: 0 0 12px rgba(0, 229, 160, 0.7);
}
.nav-cta {
  margin-left: 8px;
  padding: 9px 22px;
  border-radius: 10px;
  font-size: 14px; font-weight: 600;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #08101a !important;
  box-shadow: 0 4px 18px rgba(0, 229, 160, 0.28);
  transition: all .25s ease;
}
.nav-cta:hover {
  box-shadow: 0 6px 28px rgba(0, 229, 160, 0.45);
  transform: translateY(-2px);
}
.nav-toggle {
  display: none; color: #fff; font-size: 22px;
  padding: 8px 12px; border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 12px 28px;
  border-radius: 10px; font-size: 15px; font-weight: 600;
  transition: all .25s ease; cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #08101a; box-shadow: 0 4px 20px rgba(0, 229, 160, 0.25);
}
.btn-primary:hover {
  box-shadow: 0 8px 32px rgba(0, 229, 160, 0.4);
  transform: translateY(-2px);
}
.btn-outline {
  border: 1px solid var(--primary); color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: rgba(0, 229, 160, 0.1);
  box-shadow: 0 0 20px rgba(0, 229, 160, 0.15);
}

/* ===== Article Hero ===== */
.article-hero {
  position: relative; padding: 80px 0 64px;
  background: #0a0e17;
  overflow: hidden;
}
.article-hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0.28;
}
.article-hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10, 14, 23, 0.3) 0%, rgba(10, 14, 23, 0.92) 100%);
}
.article-hero-content {
  position: relative; z-index: 2;
}
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px; margin-bottom: 28px;
  flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255, 255, 255, 0.65); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .current { color: var(--primary); }
.breadcrumb i { font-size: 10px; }

.article-hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800; color: #fff; line-height: 1.3;
  max-width: 860px; margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}
.article-meta {
  display: flex; flex-wrap: wrap; gap: 20px;
  color: rgba(255, 255, 255, 0.6); font-size: 14px;
  margin-bottom: 18px;
}
.article-meta span { display: inline-flex; align-items: center; gap: 7px; }
.article-meta i { color: var(--primary); font-size: 14px; }
.article-desc {
  color: rgba(255, 255, 255, 0.75);
  font-size: 16px; max-width: 760px;
  line-height: 1.8;
}

/* ===== Article Section ===== */
.article-section { padding: 56px 0 72px; }
.article-grid {
  display: grid; grid-template-columns: 1fr 340px;
  gap: 40px; align-items: start;
}

/* Article Main */
.article-main {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 40px;
  border: 1px solid rgba(0, 0, 0, 0.04);
}
.article-body { font-size: 16px; line-height: 1.9; color: #2d3345; }
.article-body h2 {
  font-size: 24px; font-weight: 700; color: var(--text);
  margin: 36px 0 16px; padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 20px; font-weight: 700; color: var(--text);
  margin: 28px 0 14px;
}
.article-body p { margin-bottom: 18px; }
.article-body a { color: var(--primary-dark); border-bottom: 1px solid rgba(0, 229, 160, 0.3); }
.article-body a:hover { color: var(--primary); border-color: var(--primary); }
.article-body ul { margin: 16px 0 20px; padding-left: 22px; list-style: disc; }
.article-body ol { margin: 16px 0 20px; padding-left: 22px; list-style: decimal; }
.article-body li { margin-bottom: 8px; }
.article-body blockquote {
  border-left: 4px solid var(--accent);
  background: rgba(0, 217, 255, 0.06);
  padding: 16px 22px; margin: 22px 0;
  border-radius: 0 12px 12px 0;
  color: #4b5563;
  font-style: italic;
}
.article-body img { border-radius: 12px; margin: 24px 0; box-shadow: var(--shadow); }
.article-body table { width: 100%; border-collapse: collapse; margin: 20px 0; }
.article-body th { background: #f1f5f9; font-weight: 600; text-align: left; }
.article-body th, .article-body td { padding: 12px 16px; border: 1px solid var(--border); }
.article-body pre {
  background: var(--dark); color: #e2e8f0;
  padding: 20px; border-radius: 12px; overflow-x: auto;
  margin: 20px 0;
}
.article-body code { font-family: "JetBrains Mono", "Fira Code", Consolas, monospace; font-size: 14px; }

/* Tags & Share */
.article-tags {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  margin-top: 36px; padding-top: 24px;
  border-top: 1px solid var(--border);
}
.tag-label { font-size: 14px; color: var(--text-muted); display: inline-flex; gap: 6px; align-items: center; }
.tag-item {
  display: inline-block; padding: 5px 14px;
  background: rgba(0, 229, 160, 0.08);
  border: 1px solid rgba(0, 229, 160, 0.2);
  border-radius: 20px; font-size: 13px; color: #0d7a5a;
  transition: all .25s ease;
}
.tag-item:hover { background: rgba(0, 229, 160, 0.16); box-shadow: 0 0 12px rgba(0, 229, 160, 0.15); }

.article-share {
  display: flex; align-items: center; gap: 10px;
  margin-top: 24px; padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 14px; color: var(--text-muted);
}
.share-btn {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: #f1f5f9; color: #64748b;
  font-size: 15px; transition: all .25s ease;
}
.share-btn:hover { background: var(--dark); color: var(--primary); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1); }

/* Article Not Found */
.article-not-found {
  text-align: center; padding: 60px 20px;
}
.article-not-found i { font-size: 56px; color: var(--text-muted); margin-bottom: 20px; opacity: 0.4; }
.article-not-found h2 { font-size: 28px; font-weight: 700; margin-bottom: 12px; }
.article-not-found p { color: var(--text-muted); margin-bottom: 28px; }

/* Sidebar */
.article-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  border: 1px solid rgba(0, 0, 0, 0.04);
}
.sidebar-card h3 {
  font-size: 16px; font-weight: 700; margin-bottom: 18px;
  display: flex; align-items: center; gap: 8px;
  padding-bottom: 12px; border-bottom: 2px solid var(--border);
  color: var(--text);
}
.sidebar-card h3 i { color: var(--primary); }
.side-news-item {
  display: flex; flex-direction: column; gap: 3px;
  padding: 12px 0; border-bottom: 1px dashed var(--border);
  transition: all .25s ease;
}
.side-news-item:last-child { border-bottom: none; }
.side-news-item:hover { padding-left: 8px; }
.side-news-item:hover .side-news-title { color: var(--primary-dark); }
.side-news-date { font-size: 12px; color: var(--text-muted); display: inline-flex; align-items: center; gap: 6px; }
.side-news-date i { font-size: 11px; }
.side-news-title { font-size: 14px; color: var(--text); font-weight: 500; line-height: 1.5; }

.sidebar-cats { display: flex; flex-direction: column; gap: 10px; }
.cat-link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; background: #f8fafc;
  border-radius: 10px; font-size: 14px; font-weight: 500;
  color: var(--text); border: 1px solid transparent;
  transition: all .25s ease;
}
.cat-link i { color: var(--primary); font-size: 12px; }
.cat-link:hover { background: rgba(0, 229, 160, 0.06); border-color: rgba(0, 229, 160, 0.25); color: var(--primary-dark); }

/* ===== Related Section ===== */
.related-section {
  background: var(--dark);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.related-section::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
}
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 36px; gap: 16px; flex-wrap: wrap;
}
.section-head .section-title { color: #fff; }
.section-title { font-size: 30px; font-weight: 800; line-height: 1.3; }
.section-sub { color: rgba(255, 255, 255, 0.5); margin-top: 8px; font-size: 15px; }
.section-more { color: var(--primary); font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.section-more:hover { gap: 10px; }

.related-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--dark-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all .3s ease;
  display: block;
}
.related-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 229, 160, 0.35);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35), 0 0 24px rgba(0, 229, 160, 0.08);
}
.related-card-img { position: relative; overflow: hidden; height: 170px; }
.related-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.related-card:hover .related-card-img img { transform: scale(1.06); }
.related-card-img::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(10, 14, 23, 0.7) 100%);
}
.related-card-info { padding: 20px; }
.related-card-info h3 {
  color: #fff; font-size: 16px; font-weight: 600;
  line-height: 1.5; margin-bottom: 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.related-card-info .related-cat { font-size: 12px; color: var(--primary); margin-bottom: 6px; display: inline-block; }
.related-card-info .related-date { font-size: 12px; color: rgba(255, 255, 255, 0.4); display: flex; align-items: center; gap: 6px; }

/* ===== FAQ Section ===== */
.faq-section { padding: 72px 0; background: var(--body-bg); }
.faq-section .section-title { color: var(--text); }
.faq-section .section-sub { color: var(--text-muted); }
.faq-grid {
  max-width: 860px; margin: 0 auto;
  display: flex; flex-direction: column; gap: 16px;
}
.faq-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(0, 0, 0, 0.04);
  overflow: hidden;
  transition: all .3s ease;
}
.faq-item.active { border-color: rgba(0, 229, 160, 0.4); box-shadow: 0 8px 28px rgba(0, 229, 160, 0.1); }
.faq-q {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px; cursor: pointer; gap: 16px;
  font-size: 16px; font-weight: 600; color: var(--text);
}
.faq-q i {
  color: var(--primary); font-size: 18px;
  transition: transform .3s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-q i { transform: rotate(45deg); }
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height .35s ease;
}
.faq-a-inner {
  padding: 0 24px 20px;
  color: var(--text-muted); font-size: 15px; line-height: 1.8;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #0a0e17 0%, #132236 50%, #0a0e17 100%);
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: ""; position: absolute;
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(0, 229, 160, 0.12) 0%, transparent 70%);
  top: -120px; right: -80px;
}
.cta-section::after {
  content: ""; position: absolute;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(0, 217, 255, 0.1) 0%, transparent 70%);
  bottom: -100px; left: -60px;
}
.cta-content { position: relative; z-index: 2; text-align: center; max-width: 720px; margin: 0 auto; }
.cta-content h2 { color: #fff; font-size: clamp(24px, 3.5vw, 36px); font-weight: 800; margin-bottom: 16px; }
.cta-content p { color: rgba(255, 255, 255, 0.6); font-size: 16px; margin-bottom: 32px; line-height: 1.8; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: #070b12; padding: 64px 0 0; border-top: 1px solid rgba(255, 255, 255, 0.06); }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { color: rgba(255, 255, 255, 0.5); font-size: 14px; line-height: 1.8; max-width: 360px; }
.footer-col h4 {
  color: #fff; font-size: 16px; font-weight: 600;
  margin-bottom: 18px; position: relative; padding-bottom: 10px;
}
.footer-col h4::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 28px; height: 2px;
  background: var(--primary);
  box-shadow: 0 0 10px rgba(0, 229, 160, 0.5);
}
.footer-col a {
  display: block; color: rgba(255, 255, 255, 0.5);
  font-size: 14px; padding: 5px 0;
  transition: all .25s ease;
}
.footer-col a:hover { color: var(--primary); padding-left: 6px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 20px 0;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px;
  color: rgba(255, 255, 255, 0.35); font-size: 13px;
}
.footer-bottom a { color: rgba(255, 255, 255, 0.5); }
.footer-bottom a:hover { color: var(--primary); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-grid { grid-template-columns: 1fr; }
  .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .nav-cta { display: none; }
}

@media (max-width: 768px) {
  .header-inner { flex-wrap: wrap; }
  .main-nav {
    display: none;
    width: 100%; flex-direction: column;
    background: rgba(7, 11, 20, 0.98);
    border-radius: 12px; padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    gap: 6px;
    position: absolute; top: 100%; left: 16px; right: 16px;
    margin-top: 8px;
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .nav-link.active::after { display: none; }
  .article-sidebar { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .article-main { padding: 24px; }
  .article-hero { padding: 56px 0 44px; }
  .cta-buttons { flex-direction: column; align-items: stretch; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .header-inner { padding-top: 10px; padding-bottom: 10px; }
  .logo { font-size: 18px; }
  .logo i { font-size: 20px; }
  .section-title { font-size: 24px; }
  .article-main { padding: 18px; }
  .article-body { font-size: 15px; }
  .breadcrumb { font-size: 12px; }
  .article-hero h1 { font-size: 24px; }
  .faq-q { font-size: 14px; padding: 16px 18px; }
  .faq-a-inner { font-size: 14px; padding: 0 18px 16px; }
  .related-card-img { height: 140px; }
}

@media (min-width: 769px) {
  .main-nav { display: flex !important; }
}

/* roulang page: category1 */
:root{
  --bg:#0a0a14;
  --bg-deep:#07070e;
  --card:#11111e;
  --card-h:#151527;
  --border:rgba(255,255,255,.06);
  --neon-cyan:#00e5ff;
  --neon-purple:#a855f7;
  --neon-pink:#ff2d95;
  --text:#e6e9f0;
  --text-dim:#8b93a7;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow-card:0 10px 44px rgba(0,0,0,.45);
  --shadow-neon:0 0 26px rgba(0,229,255,.22);
}
*,*::before,*::after{
  box-sizing:border-box;
}
html{
  scroll-behavior:smooth;
}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{
  text-decoration:none;
  color:inherit;
  transition:color .25s, border-color .25s, background .25s, box-shadow .25s, transform .25s;
}
img{
  max-width:100%;
  display:block;
}
button{
  font-family:inherit;
  cursor:pointer;
}
.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 22px;
}
/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(9,9,18,.86);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:16px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:20px;
  font-weight:800;
  letter-spacing:.02em;
  color:#fff;
  white-space:nowrap;
}
.logo i{
  background:linear-gradient(135deg,var(--neon-cyan),var(--neon-purple));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  font-size:24px;
}
.logo-mark{
  width:36px;height:36px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(0,229,255,.15),rgba(168,85,247,.15));
  border:1px solid rgba(0,229,255,.3);
  color:var(--neon-cyan);
  font-size:18px;
  flex-shrink:0;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:9px 18px;
  border-radius:10px;
  font-size:15px;
  font-weight:500;
  color:var(--text-dim);
  border:1px solid transparent;
  white-space:nowrap;
}
.nav-link:hover{
  color:#fff;
  background:rgba(255,255,255,.04);
}
.nav-link.active{
  color:#fff;
  background:rgba(0,229,255,.07);
  border-color:rgba(0,229,255,.28);
  box-shadow:var(--shadow-neon);
}
.nav-cta{
  margin-left:10px;
}
/* ===== Buttons ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 24px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  border:none;
  transition:all .3s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#00e5ff,#0088ff);
  color:#04070d;
  box-shadow:0 4px 22px rgba(0,229,255,.35);
}
.btn-primary:hover{
  box-shadow:0 8px 32px rgba(0,229,255,.52);
  transform:translateY(-2px);
}
.btn-outline{
  background:transparent;
  border:1px solid rgba(255,255,255,.18);
  color:#e6e9f0;
}
.btn-outline:hover{
  border-color:rgba(0,229,255,.45);
  color:var(--neon-cyan);
  box-shadow:0 0 20px rgba(0,229,255,.12);
}
.btn-ghost{
  background:rgba(255,255,255,.05);
  color:#e6e9f0;
  border:1px solid rgba(255,255,255,.08);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.09);
  color:#fff;
}
/* ===== Hero ===== */
.hero{
  position:relative;
  min-height:560px;
  display:flex;
  align-items:center;
  background-image:
    linear-gradient(120deg,rgba(6,7,16,.94) 15%,rgba(8,10,24,.7) 55%,rgba(12,9,24,.66) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--border);
}
.hero::after{
  content:'';
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--neon-cyan),var(--neon-purple),transparent);
}
.hero-content{
  position:relative;
  z-index:2;
  padding:90px 0 80px;
  width:100%;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 16px;
  border-radius:100px;
  background:rgba(0,229,255,.07);
  border:1px solid rgba(0,229,255,.24);
  color:var(--neon-cyan);
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
}
.hero h1{
  font-size:clamp(34px,4.5vw,54px);
  line-height:1.18;
  font-weight:800;
  color:#fff;
  margin:22px 0 20px;
  letter-spacing:.01em;
}
.gradient-text{
  background:linear-gradient(90deg,var(--neon-cyan),var(--neon-purple));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-desc{
  font-size:17px;
  color:#a4adc2;
  max-width:600px;
  line-height:1.8;
  margin-bottom:36px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:48px;
}
.hero-stat{
  display:flex;
  flex-direction:column;
}
.hero-stat b{
  font-size:26px;
  font-weight:800;
  color:#fff;
  background:linear-gradient(135deg,#fff,#cdd4e2);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero-stat span{
  font-size:13px;
  color:var(--text-dim);
  margin-top:2px;
}
/* ===== Sections ===== */
.section{
  padding:88px 0;
  position:relative;
}
.section-alt{
  background:rgba(255,255,255,.018);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.section-head{
  max-width:760px;
  margin-bottom:52px;
}
.section-head.center{
  margin-left:auto;
  margin-right:auto;
  text-align:center;
}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:100px;
  background:rgba(0,229,255,.06);
  border:1px solid rgba(0,229,255,.18);
  color:var(--neon-cyan);
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  text-transform:none;
}
.section-title{
  font-size:clamp(26px,3vw,36px);
  font-weight:800;
  color:#fff;
  line-height:1.3;
  margin:18px 0 14px;
}
.section-desc{
  font-size:16px;
  color:var(--text-dim);
  line-height:1.75;
}
.neon-divider{
  width:52px;
  height:3px;
  border-radius:4px;
  background:linear-gradient(90deg,var(--neon-cyan),var(--neon-purple));
  margin-top:14px;
}
/* ===== Cards ===== */
.grid-4{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}
.grid-3{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.grid-2{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:28px;
}
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:30px;
  position:relative;
  overflow:hidden;
  transition:transform .35s ease, box-shadow .35s ease, border-color .35s ease, background .35s ease;
}
.card::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:linear-gradient(90deg,transparent,var(--neon-cyan),var(--neon-purple),transparent);
  opacity:0;
  transition:opacity .35s;
}
.card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-card);
  border-color:rgba(0,229,255,.22);
  background:var(--card-h);
}
.card:hover::before{
  opacity:1;
}
.icon-tile{
  width:52px;height:52px;
  border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:21px;
  margin-bottom:18px;
  background:rgba(0,229,255,.08);
  border:1px solid rgba(0,229,255,.22);
  color:var(--neon-cyan);
}
.icon-tile.cyan{background:rgba(0,229,255,.08);border-color:rgba(0,229,255,.22);color:var(--neon-cyan);}
.icon-tile.purple{background:rgba(168,85,247,.08);border-color:rgba(168,85,247,.26);color:var(--neon-purple);}
.icon-tile.pink{background:rgba(255,45,149,.08);border-color:rgba(255,45,149,.26);color:var(--neon-pink);}
.icon-tile.green{background:rgba(37,211,102,.08);border-color:rgba(37,211,102,.24);color:#25d366;}
.card h3{
  font-size:19px;
  font-weight:700;
  color:#fff;
  margin:0 0 10px;
}
.card p{
  font-size:14px;
  color:var(--text-dim);
  line-height:1.7;
  margin:0;
}
.card-list{
  margin-top:16px;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.card-list li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:#bcc4d6;
  list-style:none;
}
.card-list li i{
  color:var(--neon-cyan);
  font-size:12px;
  width:18px;
  text-align:center;
}
/* ===== Cover cards ===== */
.cover-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  position:relative;
}
.cover-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-card);
  border-color:rgba(0,229,255,.24);
}
.cover-img{
  position:relative;
  height:200px;
  overflow:hidden;
}
.cover-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.cover-card:hover .cover-img img{
  transform:scale(1.05);
}
.cover-img::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,7,14,0) 45%,rgba(7,7,14,.35) 82%,var(--card) 100%);
}
.cover-badge{
  position:absolute;
  top:14px;left:14px;
  z-index:2;
  font-size:12px;
  font-weight:600;
  padding:5px 12px;
  border-radius:100px;
  background:rgba(8,9,18,.72);
  backdrop-filter:blur(8px);
  border:1px solid rgba(0,229,255,.25);
  color:var(--neon-cyan);
}
.cover-body{
  padding:22px 24px 26px;
}
.cover-body h3{
  font-size:18px;
  font-weight:700;
  color:#fff;
  margin:0 0 10px;
}
.cover-body p{
  font-size:14px;
  color:var(--text-dim);
  line-height:1.7;
  margin:0;
}
.cover-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid var(--border);
}
.cover-tag{
  font-size:13px;
  color:var(--text-dim);
}
.cover-link{
  font-size:14px;
  font-weight:600;
  color:var(--neon-cyan);
}
.cover-link i{
  transition:transform .25s;
}
.cover-card:hover .cover-link i{
  transform:translateX(4px);
}
/* ===== Steps ===== */
.steps-wrap{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:20px;
  position:relative;
}
.steps-wrap::before{
  content:'';
  position:absolute;
  top:39px;
  left:6%;
  right:6%;
  height:2px;
  background:linear-gradient(90deg,rgba(0,229,255,.5),rgba(168,85,247,.5),rgba(0,229,255,.2));
  z-index:0;
  opacity:.5;
}
.step-item{
  text-align:center;
  position:relative;
  z-index:1;
}
.step-num{
  width:78px;height:78px;
  margin:0 auto 16px;
  border-radius:50%;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  background:var(--bg);
  border:2px solid rgba(0,229,255,.35);
  box-shadow:0 0 28px rgba(0,229,255,.15), inset 0 0 18px rgba(0,229,255,.05);
  color:var(--neon-cyan);
  font-size:24px;
  font-weight:800;
  position:relative;
}
.step-num small{
  font-size:10px;
  font-weight:500;
  color:var(--text-dim);
  letter-spacing:.04em;
}
.step-item h4{
  font-size:16px;
  font-weight:700;
  color:#fff;
  margin:0 0 8px;
}
.step-item p{
  font-size:13px;
  color:var(--text-dim);
  line-height:1.65;
  margin:0;
  padding:0 6px;
}
/* ===== Stats ===== */
.stats-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
  margin-top:46px;
}
.stat-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:28px 24px;
  text-align:center;
  transition:border-color .3s, box-shadow .3s, transform .3s;
}
.stat-card:hover{
  border-color:rgba(0,229,255,.25);
  box-shadow:var(--shadow-neon);
  transform:translateY(-4px);
}
.stat-value{
  font-size:42px;
  font-weight:800;
  line-height:1.1;
  background:linear-gradient(90deg,var(--neon-cyan),var(--neon-purple));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.stat-label{
  font-size:14px;
  color:var(--text-dim);
  margin-top:10px;
}
/* ===== News list ===== */
.news-card{
  display:flex;
  gap:20px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:18px;
  transition:transform .3s, box-shadow .3s, border-color .3s;
  align-items:center;
}
.news-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-card);
  border-color:rgba(0,229,255,.22);
}
.news-thumb{
  width:160px;height:110px;
  border-radius:12px;
  overflow:hidden;
  flex-shrink:0;
}
.news-thumb img{
  width:100%;height:100%;
  object-fit:cover;
}
.news-content{
  flex:1;
  min-width:0;
}
.news-content h3{
  font-size:17px;
  font-weight:700;
  color:#fff;
  margin:0 0 6px;
  line-height:1.4;
}
.news-content p{
  font-size:13px;
  color:var(--text-dim);
  margin:0 0 10px;
  line-height:1.6;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  color:var(--neon-cyan);
  background:rgba(0,229,255,.06);
  border:1px solid rgba(0,229,255,.15);
  padding:3px 10px;
  border-radius:100px;
}
.news-date{
  font-size:12px;
  color:#6b7280;
  margin-left:auto;
  white-space:nowrap;
}
/* ===== FAQ ===== */
.faq-wrap{
  max-width:820px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.faq-item{
  background:rgba(255,255,255,.02);
  border:1px solid var(--border);
  border-radius:14px;
  overflow:hidden;
  transition:border-color .3s, box-shadow .3s;
}
.faq-item.open{
  border-color:rgba(0,229,255,.28);
  box-shadow:0 0 24px rgba(0,229,255,.06);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:20px 22px;
  background:transparent;
  border:none;
  color:#dbe1ea;
  font-size:16px;
  font-weight:600;
  text-align:left;
}
.faq-q:hover{
  color:#fff;
}
.faq-q i{
  color:var(--neon-cyan);
  font-size:14px;
  flex-shrink:0;
  transition:transform .3s;
}
.faq-item.open .faq-q i{
  transform:rotate(45deg);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s ease;
}
.faq-a-inner{
  padding:0 22px 20px;
  color:var(--text-dim);
  font-size:14px;
  line-height:1.8;
}
/* ===== CTA ===== */
.cta-section{
  position:relative;
  background-image:
    linear-gradient(120deg,rgba(7,8,16,.94) 25%,rgba(13,10,25,.85) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-top:1px solid var(--border);
}
.cta-inner{
  position:relative;
  z-index:2;
  max-width:720px;
  margin:0 auto;
  text-align:center;
  padding:80px 0;
}
.cta-inner h2{
  font-size:clamp(26px,3vw,36px);
  font-weight:800;
  color:#fff;
  margin:16px 0 14px;
}
.cta-inner p{
  font-size:16px;
  color:#a4adc2;
  line-height:1.75;
  margin-bottom:32px;
}
/* ===== Footer ===== */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--border);
  padding:60px 0 0;
}
.footer-top{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:44px;
  padding-bottom:36px;
}
.footer-brand .logo{
  margin-bottom:14px;
}
.footer-brand p{
  font-size:14px;
  color:var(--text-dim);
  max-width:340px;
  line-height:1.75;
}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin:0 0 16px;
  letter-spacing:.04em;
}
.footer-col a{
  display:block;
  font-size:14px;
  color:var(--text-dim);
  margin-bottom:10px;
}
.footer-col a:hover{
  color:var(--neon-cyan);
}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:20px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:14px;
  color:#6b7280;
}
.footer-bottom a{
  color:var(--text-dim);
}
.footer-bottom a:hover{
  color:var(--neon-cyan);
}
/* ===== Mobile header ===== */
.menu-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:10px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  color:#fff;
  font-size:18px;
  align-items:center;
  justify-content:center;
}
@media(max-width:1024px){
  .grid-4{
    grid-template-columns:repeat(2,1fr);
  }
  .steps-wrap{
    grid-template-columns:repeat(3,1fr);
    gap:28px 16px;
  }
  .steps-wrap::before{
    display:none;
  }
  .grid-3{
    grid-template-columns:repeat(2,1fr);
  }
  .stats-band{
    grid-template-columns:repeat(2,1fr);
  }
}
@media(max-width:768px){
  .section{
    padding:64px 0;
  }
  .menu-toggle{
    display:flex;
  }
  .main-nav{
    position:fixed;
    top:72px;
    left:0;right:0;
    background:rgba(9,9,18,.97);
    backdrop-filter:blur(20px);
    border-bottom:1px solid var(--border);
    flex-direction:column;
    align-items:stretch;
    padding:16px 22px 22px;
    gap:8px;
    transform:translateY(-12px);
    opacity:0;
    pointer-events:none;
    transition:transform .3s, opacity .3s;
    z-index:99;
  }
  .main-nav.open{
    transform:translateY(0);
    opacity:1;
    pointer-events:auto;
  }
  .nav-link{
    padding:12px 16px;
    font-size:15px;
  }
  .nav-cta{
    margin:8px 0 0;
    justify-content:center;
  }
  .hero{
    min-height:0;
    padding:40px 0 20px;
  }
  .hero-content{
    padding:56px 0 48px;
  }
  .hero h1{
    font-size:30px;
  }
  .hero-desc{
    font-size:15px;
  }
  .footer-top{
    grid-template-columns:1fr;
    gap:28px;
  }
  .grid-3,.grid-2{
    grid-template-columns:1fr;
  }
  .news-card{
    flex-direction:column;
    align-items:flex-start;
  }
  .news-thumb{
    width:100%;
    height:180px;
  }
  .news-date{
    margin-left:0;
  }
}
@media(max-width:520px){
  .grid-4{
    grid-template-columns:1fr;
  }
  .steps-wrap{
    grid-template-columns:1fr;
    gap:24px;
  }
  .stats-band{
    grid-template-columns:1fr;
  }
  .hero-actions{
    flex-direction:column;
  }
  .hero-actions .btn{
    width:100%;
  }
  .section-title{
    font-size:24px;
  }
  .logo{
    font-size:17px;
  }
  .hero-stat b{
    font-size:22px;
  }
  .hero-stats{
    gap:18px;
  }
}
/* ===== Animations ===== */
@keyframes floatY{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-10px);}
}
.floating-orb{
  position:absolute;
  border-radius:50%;
  filter:blur(60px);
  pointer-events:none;
  z-index:1;
}
.orb-cyan{
  width:220px;height:220px;
  background:rgba(0,229,255,.14);
  top:-40px;right:10%;
  animation:floatY 6s ease-in-out infinite;
}
.orb-purple{
  width:260px;height:260px;
  background:rgba(168,85,247,.12);
  bottom:-60px;left:5%;
  animation:floatY 8s ease-in-out infinite;
}

/* roulang page: category2 */
:root {
            --color-primary: #06b6d4;
            --color-primary-dark: #0891b2;
            --color-accent: #f59e0b;
            --color-bg-dark: #0f0c1d;
            --color-bg-card: #1e1b2e;
            --color-text-light: #f1f5f9;
            --color-text-muted: #94a3b8;
            --color-border: rgba(34, 211, 238, 0.15);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-glow: 0 0 20px rgba(34, 211, 238, 0.15);
            --transition-base: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--color-bg-dark);
            color: var(--color-text-light);
            line-height: 1.6;
        }
        
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        
        /* ===== NAVBAR ===== */
        .main-header {
            background: rgba(15, 12, 29, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 2px solid var(--color-primary);
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        .main-header::after {
            content: '';
            display: block;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-accent), transparent);
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            opacity: 0.6;
        }
        
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 20px;
            flex-wrap: wrap;
        }
        
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.02em;
            transition: var(--transition-base);
            white-space: nowrap;
        }
        
        .nav-brand i {
            color: var(--color-primary);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 8px rgba(6, 182, 212, 0.5));
        }
        
        .nav-brand:hover {
            text-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 8px;
            color: #cbd5e1;
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition-base);
            border: 1px solid transparent;
        }
        
        .nav-link:hover {
            color: #fff;
            background: rgba(6, 182, 212, 0.08);
            border-color: rgba(6, 182, 212, 0.2);
        }
        
        .nav-link.active {
            color: #fff;
            background: rgba(6, 182, 212, 0.12);
            border-color: rgba(6, 182, 212, 0.3);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.15), inset 0 0 15px rgba(6, 182, 212, 0.05);
        }
        
        .nav-link.active::after {
            content: '';
            display: block;
            width: 4px;
            height: 4px;
            background: var(--color-primary);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--color-primary);
        }
        
        .nav-cta {
            background: linear-gradient(135deg, #06b6d4, #0891b2);
            color: #fff;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: 10px;
            text-decoration: none;
            transition: var(--transition-base);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.25);
            white-space: nowrap;
        }
        
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 30px rgba(6, 182, 212, 0.4);
        }
        
        /* ===== HERO / PAGE BANNER ===== */
        .page-banner {
            position: relative;
            padding: 90px 0 80px;
            background: linear-gradient(180deg, rgba(15,12,29,0.92), rgba(15,12,29,0.85)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 1px solid var(--color-border);
        }
        
        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent), transparent);
        }
        
        .banner-content {
            max-width: 760px;
        }
        
        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(6, 182, 212, 0.12);
            border: 1px solid rgba(6, 182, 212, 0.3);
            border-radius: 30px;
            color: #67e8f9;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            margin-bottom: 20px;
        }
        
        .banner-title {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        
        .banner-title span {
            background: linear-gradient(90deg, #22d3ee, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .banner-desc {
            font-size: 1.05rem;
            color: #94a3b8;
            margin-bottom: 28px;
            max-width: 680px;
            line-height: 1.8;
        }
        
        .banner-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        
        /* ===== BUTTONS ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            transition: var(--transition-base);
            border: none;
            cursor: pointer;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, #06b6d4, #0891b2);
            color: #fff;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.2);
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 30px rgba(6, 182, 212, 0.35);
        }
        
        .btn-outline {
            background: transparent;
            color: #e2e8f0;
            border: 1px solid rgba(148, 163, 184, 0.3);
        }
        
        .btn-outline:hover {
            border-color: var(--color-primary);
            color: #67e8f9;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.1);
        }
        
        .btn-gold {
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            color: #1e1b2e;
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.2);
        }
        
        .btn-gold:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 30px rgba(245, 158, 11, 0.35);
        }
        
        /* ===== SECTION ===== */
        .section {
            padding: 80px 0;
            position: relative;
        }
        
        .section-alt {
            background: rgba(30, 27, 46, 0.4);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }
        
        .section-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(6, 182, 212, 0.1);
            border: 1px solid rgba(6, 182, 212, 0.25);
            border-radius: 20px;
            color: #67e8f9;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.05em;
        }
        
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        
        .section-subtitle {
            color: #94a3b8;
            font-size: 1.02rem;
            line-height: 1.8;
        }
        
        /* ===== CARDS ===== */
        .card {
            background: rgba(30, 27, 46, 0.8);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 32px;
            transition: var(--transition-base);
            height: 100%;
        }
        
        .card:hover {
            border-color: rgba(6, 182, 212, 0.3);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3), var(--shadow-glow);
            transform: translateY(-4px);
        }
        
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(245, 158, 11, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            border: 1px solid rgba(6, 182, 212, 0.2);
        }
        
        .card-icon i {
            font-size: 1.4rem;
            color: #22d3ee;
        }
        
        .card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #f1f5f9;
        }
        
        .card p {
            color: #94a3b8;
            font-size: 0.92rem;
            line-height: 1.75;
        }
        
        /* ===== MEMBER LEVEL ===== */
        .level-card {
            background: rgba(30, 27, 46, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 28px;
            text-align: center;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        
        .level-card:hover {
            transform: translateY(-6px);
            border-color: rgba(6, 182, 212, 0.3);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
        }
        
        .level-card.premium {
            border: 2px solid rgba(245, 158, 11, 0.4);
            box-shadow: 0 0 30px rgba(245, 158, 11, 0.1);
        }
        
        .level-badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
            background: rgba(6, 182, 212, 0.15);
            color: #67e8f9;
            border: 1px solid rgba(6, 182, 212, 0.25);
        }
        
        .level-card.premium .level-badge {
            background: rgba(245, 158, 11, 0.15);
            color: #fcd34d;
            border-color: rgba(245, 158, 11, 0.3);
        }
        
        .level-icon {
            font-size: 2.6rem;
            color: #22d3ee;
            margin-bottom: 12px;
            filter: drop-shadow(0 0 10px rgba(6, 182, 212, 0.3));
        }
        
        .level-card.premium .level-icon {
            color: #fbbf24;
            filter: drop-shadow(0 0 10px rgba(245, 158, 11, 0.3));
        }
        
        .level-name {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        
        .level-desc {
            color: #94a3b8;
            font-size: 0.88rem;
            margin-bottom: 16px;
            line-height: 1.6;
        }
        
        .level-points {
            text-align: left;
            padding: 14px 16px;
            background: rgba(0, 0, 0, 0.2);
            border-radius: 8px;
            margin-top: 10px;
        }
        
        .level-points li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: #cbd5e1;
            padding: 5px 0;
            list-style: none;
        }
        
        .level-points li i {
            color: #22d3ee;
            font-size: 0.75rem;
        }
        
        .level-card.premium .level-points li i {
            color: #fbbf24;
        }
        
        /* ===== STATS ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        
        .stat-item {
            background: rgba(30, 27, 46, 0.8);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            transition: var(--transition-base);
        }
        
        .stat-item:hover {
            border-color: rgba(6, 182, 212, 0.25);
            box-shadow: var(--shadow-glow);
        }
        
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #22d3ee, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 6px;
        }
        
        .stat-label {
            color: #94a3b8;
            font-size: 0.9rem;
        }
        
        /* ===== FLOW STEPS ===== */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: flow;
        }
        
        .flow-step {
            text-align: center;
            padding: 32px 20px;
            background: rgba(30, 27, 46, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            position: relative;
            transition: var(--transition-base);
        }
        
        .flow-step:hover {
            border-color: rgba(6, 182, 212, 0.3);
            transform: translateY(-3px);
        }
        
        .flow-step .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, #06b6d4, #0891b2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.05rem;
            margin: 0 auto 16px;
            color: #fff;
            box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
        }
        
        .flow-step h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        
        .flow-step p {
            font-size: 0.85rem;
            color: #94a3b8;
            line-height: 1.6;
        }
        
        /* ===== FAQ ===== */
        .faq-item {
            background: rgba(30, 27, 46, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition-base);
        }
        
        .faq-item:hover {
            border-color: rgba(6, 182, 212, 0.2);
        }
        
        .faq-q {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 0.98rem;
            user-select: none;
            background: rgba(6, 182, 212, 0.03);
        }
        
        .faq-q i {
            color: #22d3ee;
            transition: var(--transition-base);
            font-size: 0.85rem;
        }
        
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        
        .faq-a {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        
        .faq-item.open .faq-a {
            padding: 0 24px 18px;
            max-height: 500px;
        }
        
        .faq-a p {
            color: #94a3b8;
            font-size: 0.92rem;
            line-height: 1.75;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 14px;
        }
        
        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(245, 158, 11, 0.08)), url('/assets/images/backpic/back-3.png') center center / cover;
            position: relative;
            border-radius: 24px;
            padding: 60px 50px;
            overflow: hidden;
            text-align: center;
        }
        
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 12, 29, 0.7);
            z-index: 0;
        }
        
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        
        .cta-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        
        .cta-desc {
            color: #cbd5e1;
            font-size: 1rem;
            margin-bottom: 24px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }
        
        /* ===== FOOTER ===== */
        .site-footer {
            background: rgba(15, 12, 29, 0.95);
            border-top: 2px solid var(--color-primary);
            padding: 60px 0 24px;
            position: relative;
        }
        
        .site-footer::before {
            content: '';
            position: absolute;
            top: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-accent), transparent);
            opacity: 0.5;
        }
        
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        
        .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: #f1f5f9;
            margin-bottom: 12px;
        }
        
        .footer-brand .logo i {
            color: var(--color-primary);
        }
        
        .footer-brand p {
            color: #94a3b8;
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        
        .footer-col h4 {
            color: #e2e8f0;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        
        .footer-col a {
            display: block;
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.88rem;
            padding: 6px 0;
            transition: var(--transition-base);
        }
        
        .footer-col a:hover {
            color: #22d3ee;
            transform: translateX(4px);
        }
        
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            color: #64748b;
            font-size: 0.82rem;
            flex-wrap: wrap;
            gap: 12px;
        }
        
        .footer-bottom a {
            color: #22d3ee;
            text-decoration: none;
        }
        
        /* ===== DECORATIVE ===== */
        .glow-line {
            background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-accent), transparent);
            display: block;
            height: 1px;
            width: 160px;
            margin: 0 auto 6px;
        }
        
        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
            .banner-title {
                font-size: 2.2rem;
            }
        }
        
        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .main-nav {
                gap: 12px;
            }
            .nav-links {
                order: 3;
                width: 100%;
                justify-content: center;
                flex-wrap: wrap;
                margin-top: 4px;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                padding-top: 10px;
            }
            .nav-link {
                padding: 6px 14px;
                font-size: 0.85rem;
            }
            .nav-cta {
                order: 2;
                padding: 8px 18px;
                font-size: 0.85rem;
            }
            .page-banner {
                padding: 60px 0 56px;
            }
            .banner-title {
                font-size: 1.8rem;
            }
            .banner-desc {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .flow-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-section {
                padding: 40px 24px;
                border-radius: 18px;
            }
            .cta-title {
                font-size: 1.5rem;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .nav-brand {
                font-size: 1.1rem;
            }
            .nav-brand i {
                font-size: 1.3rem;
            }
            .nav-link {
                padding: 6px 10px;
                font-size: 0.8rem;
            }
            .nav-cta {
                display: none;
            }
            .page-banner {
                padding: 48px 0 44px;
            }
            .banner-title {
                font-size: 1.5rem;
            }
            .banner-desc {
                font-size: 0.9rem;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 16px 12px;
            }
            .flow-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .level-card {
                padding: 20px;
            }
            .faq-q {
                padding: 14px 18px;
                font-size: 0.9rem;
            }
            .faq-a {
                padding-left: 18px;
                padding-right: 18px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }