/* roulang page: index */
/* ===== Design Variables ===== */
    :root {
      --primary: #1a0a2e;
      --primary-light: #2d1b69;
      --primary-dark: #0d0518;
      --accent: #f0b429;
      --accent-light: #f7d56e;
      --accent-dark: #c9920a;
      --bg-dark: #0d0518;
      --bg-card: rgba(255, 255, 255, 0.05);
      --bg-card-hover: rgba(255, 255, 255, 0.10);
      --bg-section: rgba(255, 255, 255, 0.02);
      --text-primary: #f5f0ff;
      --text-secondary: #c8c0d8;
      --text-muted: #9a8fb0;
      --border-color: rgba(255, 255, 255, 0.08);
      --border-light: rgba(255, 255, 255, 0.15);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-xl: 32px;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
      --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
      --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
      --shadow-glow: 0 0 30px rgba(240, 180, 41, 0.15);
      --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      --container-max: 1200px;
      --header-height: 80px;
    }

    /* ===== Reset & Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
    body {
      font-family: var(--font-sans);
      background: var(--bg-dark);
      color: var(--text-primary);
      line-height: 1.7;
      overflow-x: hidden;
    }
    a { color: var(--accent); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--accent-light); }
    img { max-width: 100%; height: auto; display: block; }
    button, input, textarea { font-family: inherit; font-size: inherit; }
    ul, ol { list-style: none; }
    
    /* ===== Container ===== */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ===== Typography ===== */
    .section-title {
      font-size: 2.4rem;
      font-weight: 700;
      color: var(--text-primary);
      text-align: center;
      margin-bottom: 12px;
      letter-spacing: -0.02em;
    }
    .section-subtitle {
      font-size: 1.1rem;
      color: var(--text-secondary);
      text-align: center;
      max-width: 640px;
      margin: 0 auto 48px;
      line-height: 1.6;
    }
    .section-header { margin-bottom: 48px; }

    /* ===== Header & Nav ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      height: var(--header-height);
      background: rgba(13, 5, 24, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .site-header.scrolled {
      background: rgba(13, 5, 24, 0.95);
      box-shadow: 0 4px 30px rgba(0,0,0,0.5);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: var(--header-height);
    }
    .logo {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--text-primary);
      display: flex;
      align-items: center;
      gap: 10px;
      letter-spacing: -0.02em;
    }
    .logo i {
      color: var(--accent);
      font-size: 1.8rem;
    }
    .logo span {
      background: linear-gradient(135deg, var(--accent), var(--accent-light));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .logo:hover { color: var(--text-primary); }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .main-nav a {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      color: var(--text-secondary);
      font-size: 0.95rem;
      font-weight: 500;
      transition: var(--transition);
      position: relative;
    }
    .main-nav a i { font-size: 0.9rem; }
    .main-nav a:hover,
    .main-nav a.active {
      color: var(--text-primary);
      background: var(--bg-card);
    }
    .main-nav a.active {
      color: var(--accent);
      background: rgba(240, 180, 41, 0.1);
    }
    .main-nav a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 24px;
      height: 3px;
      background: var(--accent);
      border-radius: 4px;
    }
    .nav-cta {
      background: linear-gradient(135deg, var(--accent), var(--accent-dark)) !important;
      color: #1a0a2e !important;
      font-weight: 600 !important;
      padding: 10px 24px !important;
      border-radius: var(--radius-sm) !important;
      box-shadow: 0 4px 16px rgba(240, 180, 41, 0.3);
    }
    .nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(240, 180, 41, 0.4);
      color: #1a0a2e !important;
    }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .hamburger span {
      display: block;
      width: 26px;
      height: 2px;
      background: var(--text-primary);
      border-radius: 4px;
      transition: var(--transition);
    }
    .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

    /* ===== Hero ===== */
    .hero {
      position: relative;
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: calc(var(--header-height) + 40px) 24px 80px;
      background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
      isolation: isolate;
    }
    .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, 
        rgba(13, 5, 24, 0.70) 0%, 
        rgba(13, 5, 24, 0.50) 50%,
        rgba(13, 5, 24, 0.85) 100%);
      z-index: 1;
    }
    .hero::after {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse at center, rgba(240, 180, 41, 0.08) 0%, transparent 70%);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 820px;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 20px;
      background: rgba(240, 180, 41, 0.12);
      border: 1px solid rgba(240, 180, 41, 0.25);
      border-radius: 100px;
      font-size: 0.85rem;
      color: var(--accent);
      margin-bottom: 32px;
      backdrop-filter: blur(4px);
    }
    .hero-badge i { font-size: 0.75rem; }
    .hero h1 {
      font-size: 4rem;
      font-weight: 800;
      line-height: 1.15;
      margin-bottom: 24px;
      letter-spacing: -0.03em;
      background: linear-gradient(135deg, #ffffff 0%, var(--accent-light) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .hero p {
      font-size: 1.25rem;
      color: var(--text-secondary);
      max-width: 640px;
      margin: 0 auto 40px;
      line-height: 1.8;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 14px 32px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      transition: var(--transition);
      border: none;
      text-decoration: none;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--accent), var(--accent-dark));
      color: #1a0a2e;
      box-shadow: 0 4px 20px rgba(240, 180, 41, 0.35);
    }
    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 30px rgba(240, 180, 41, 0.45);
      color: #1a0a2e;
    }
    .btn-outline {
      background: transparent;
      color: var(--text-primary);
      border: 1px solid var(--border-light);
    }
    .btn-outline:hover {
      border-color: var(--accent);
      color: var(--accent);
      transform: translateY(-3px);
      background: rgba(240, 180, 41, 0.05);
    }
    .hero-stats {
      display: flex;
      gap: 40px;
      justify-content: center;
      margin-top: 56px;
      flex-wrap: wrap;
    }
    .hero-stat {
      text-align: center;
    }
    .hero-stat-number {
      font-size: 2.2rem;
      font-weight: 700;
      color: var(--accent);
      display: block;
      line-height: 1.2;
    }
    .hero-stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* ===== Sections Common ===== */
    section {
      padding: 80px 0;
      position: relative;
    }
    section.bg-alt { background: var(--bg-section); }
    .divider {
      width: 60px;
      height: 4px;
      background: linear-gradient(90deg, var(--accent), var(--accent-light));
      border-radius: 4px;
      margin: 16px auto 32px;
    }

    /* ===== Intro / About ===== */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .intro-image {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .intro-image img {
      width: 100%;
      height: 420px;
      object-fit: cover;
      transition: var(--transition);
    }
    .intro-image:hover img { transform: scale(1.03); }
    .intro-text h2 {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 20px;
      line-height: 1.3;
    }
    .intro-text h2 span { color: var(--accent); }
    .intro-text p {
      color: var(--text-secondary);
      margin-bottom: 16px;
      line-height: 1.8;
    }
    .intro-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 24px;
    }
    .intro-feature {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 16px;
      background: var(--bg-card);
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      color: var(--text-secondary);
    }
    .intro-feature i { color: var(--accent); }

    /* ===== Categories ===== */
    .category-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 24px;
    }
    .category-card {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      transition: var(--transition);
      cursor: pointer;
      text-decoration: none;
      display: block;
    }
    .category-card:hover {
      transform: translateY(-6px);
      border-color: var(--accent);
      box-shadow: var(--shadow-glow);
    }
    .category-card-image {
      width: 100%;
      height: 180px;
      object-fit: cover;
      transition: var(--transition);
    }
    .category-card:hover .category-card-image { transform: scale(1.05); }
    .category-card-body {
      padding: 20px;
    }
    .category-card-body h3 {
      font-size: 1.15rem;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-primary);
    }
    .category-card-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.5;
    }
    .category-card-body .tag {
      display: inline-block;
      padding: 4px 12px;
      background: rgba(240, 180, 41, 0.12);
      color: var(--accent);
      border-radius: 100px;
      font-size: 0.75rem;
      font-weight: 500;
      margin-top: 12px;
    }

    /* ===== Latest Posts / CMS List ===== */
    .posts-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
      gap: 24px;
    }
    .post-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .post-card:hover {
      transform: translateY(-4px);
      border-color: rgba(240, 180, 41, 0.3);
      box-shadow: var(--shadow-md);
    }
    .post-card-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }
    .post-card-body {
      padding: 20px;
    }
    .post-card-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .post-card-meta .category-tag {
      padding: 2px 12px;
      background: rgba(240, 180, 41, 0.12);
      color: var(--accent);
      border-radius: 100px;
      font-size: 0.7rem;
      font-weight: 500;
    }
    .post-card-title {
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 8px;
      line-height: 1.4;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .post-card-title a {
      color: var(--text-primary);
    }
    .post-card-title a:hover { color: var(--accent); }
    .post-card-excerpt {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .post-card-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: 16px;
      padding-top: 16px;
      border-top: 1px solid var(--border-color);
    }
    .post-card-footer .date {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .post-card-footer .read-more {
      font-size: 0.85rem;
      color: var(--accent);
      font-weight: 500;
    }
    .post-card-footer .read-more i { font-size: 0.75rem; margin-left: 4px; }
    .posts-empty {
      grid-column: 1 / -1;
      text-align: center;
      padding: 60px 20px;
      color: var(--text-muted);
      font-size: 1.1rem;
    }
    .posts-empty i {
      font-size: 3rem;
      color: var(--text-muted);
      opacity: 0.4;
      display: block;
      margin-bottom: 16px;
    }

    /* ===== Stats / Numbers ===== */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 24px;
      text-align: center;
    }
    .stat-card {
      padding: 32px 20px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      transition: var(--transition);
    }
    .stat-card:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }
    .stat-card i {
      font-size: 2.2rem;
      color: var(--accent);
      margin-bottom: 16px;
    }
    .stat-card .num {
      font-size: 2.6rem;
      font-weight: 700;
      color: var(--text-primary);
      display: block;
      line-height: 1.2;
    }
    .stat-card .label {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-top: 8px;
    }

    /* ===== Features / Process ===== */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 24px;
    }
    .feature-card {
      padding: 32px 24px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      text-align: center;
      transition: var(--transition);
    }
    .feature-card:hover {
      transform: translateY(-6px);
      border-color: var(--accent);
      box-shadow: var(--shadow-glow);
    }
    .feature-card .icon-wrap {
      width: 64px;
      height: 64px;
      margin: 0 auto 20px;
      background: rgba(240, 180, 41, 0.1);
      border-radius: 100px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      color: var(--accent);
      transition: var(--transition);
    }
    .feature-card:hover .icon-wrap {
      background: rgba(240, 180, 41, 0.2);
      transform: scale(1.05);
    }
    .feature-card h3 {
      font-size: 1.15rem;
      font-weight: 600;
      margin-bottom: 10px;
    }
    .feature-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* ===== FAQ ===== */
    .faq-list {
      max-width: 760px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item:hover { border-color: rgba(240, 180, 41, 0.2); }
    .faq-question {
      width: 100%;
      background: none;
      border: none;
      padding: 20px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      color: var(--text-primary);
      font-size: 1rem;
      font-weight: 500;
      text-align: left;
      transition: var(--transition);
    }
    .faq-question:hover { color: var(--accent); }
    .faq-question i {
      font-size: 0.8rem;
      transition: var(--transition);
      color: var(--text-muted);
    }
    .faq-item.active .faq-question i {
      transform: rotate(180deg);
      color: var(--accent);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.4s ease;
      padding: 0 24px;
      color: var(--text-secondary);
      line-height: 1.7;
      font-size: 0.95rem;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 24px 20px;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      text-align: center;
    }
    .cta-section h2 {
      font-size: 2.4rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .cta-section p {
      font-size: 1.1rem;
      color: var(--text-secondary);
      max-width: 560px;
      margin: 0 auto 32px;
    }
    .cta-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--primary-dark);
      border-top: 1px solid var(--border-color);
      padding: 56px 0 32px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand .logo { font-size: 1.4rem; margin-bottom: 16px; }
    .footer-brand p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 320px;
    }
    .footer-col h4 {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 16px;
    }
    .footer-col a {
      display: block;
      padding: 6px 0;
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .footer-col a:hover { color: var(--accent); }
    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-bottom p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .footer-bottom-links {
      display: flex;
      gap: 20px;
    }
    .footer-bottom-links a {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .footer-bottom-links a:hover { color: var(--accent); }

    /* ===== Back to Top ===== */
    .back-to-top {
      position: fixed;
      bottom: 40px;
      right: 40px;
      width: 50px;
      height: 50px;
      background: var(--accent);
      color: #1a0a2e;
      border: none;
      border-radius: 100px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      cursor: pointer;
      box-shadow: 0 4px 20px rgba(240, 180, 41, 0.3);
      transition: var(--transition);
      opacity: 0;
      visibility: hidden;
      transform: translateY(20px);
      z-index: 999;
    }
    .back-to-top.visible {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }
    .back-to-top:hover {
      transform: translateY(-4px);
      box-shadow: 0 8px 30px rgba(240, 180, 41, 0.4);
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .intro-grid { gap: 40px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .hero h1 { font-size: 3.2rem; }
    }
    @media (max-width: 768px) {
      :root { --header-height: 68px; }
      .hamburger { display: flex; }
      .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: rgba(13, 5, 24, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px 24px;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-120%);
        opacity: 0;
        transition: var(--transition);
        pointer-events: none;
      }
      .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
      }
      .main-nav a { width: 100%; padding: 14px 20px; }
      .nav-cta { margin-top: 8px; }
      .hero { min-height: 90vh; padding: calc(var(--header-height) + 32px) 16px 60px; }
      .hero h1 { font-size: 2.4rem; }
      .hero p { font-size: 1rem; }
      .hero-stats { gap: 24px; }
      .hero-stat-number { font-size: 1.8rem; }
      .intro-grid { grid-template-columns: 1fr; gap: 32px; }
      .intro-image img { height: 280px; }
      .intro-features { grid-template-columns: 1fr; }
      .section-title { font-size: 1.8rem; }
      .posts-grid { grid-template-columns: 1fr; }
      .category-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
      .features-grid { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
      .footer-grid { grid-template-columns: 1fr; gap: 24px; }
      .footer-bottom { flex-direction: column; text-align: center; }
      .back-to-top { bottom: 24px; right: 24px; width: 44px; height: 44px; font-size: 1rem; }
      section { padding: 56px 0; }
      .cta-section h2 { font-size: 1.8rem; }
    }
    @media (max-width: 520px) {
      .hero h1 { font-size: 1.8rem; }
      .hero-actions { flex-direction: column; width: 100%; }
      .hero-actions .btn { width: 100%; justify-content: center; }
      .hero-stats { flex-direction: column; gap: 16px; }
      .category-grid { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: 1fr; }
    }

    /* ===== Animations ===== */
    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(30px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .animate-in {
      animation: fadeInUp 0.6s ease forwards;
    }
    .delay-1 { animation-delay: 0.1s; }
    .delay-2 { animation-delay: 0.2s; }
    .delay-3 { animation-delay: 0.3s; }
    .delay-4 { animation-delay: 0.4s; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6a4c9c;
            --primary-light: #8b6fc0;
            --primary-dark: #4a2d7a;
            --secondary: #e8a87c;
            --secondary-light: #f0c9a8;
            --accent: #f4a261;
            --bg-light: #faf8f5;
            --bg-white: #ffffff;
            --bg-dark: #2d1b4e;
            --bg-card: #ffffff;
            --text-primary: #2d1b4e;
            --text-secondary: #5a4a6a;
            --text-light: #8a7a9a;
            --text-white: #ffffff;
            --border-color: #e8e0f0;
            --border-light: #f0ebe5;
            --shadow-sm: 0 2px 8px rgba(106, 76, 156, 0.08);
            --shadow-md: 0 6px 24px rgba(106, 76, 156, 0.12);
            --shadow-lg: 0 12px 40px rgba(106, 76, 156, 0.18);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            min-height: 100vh;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        .section-padding {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            line-height: 1.25;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 48px;
            line-height: 1.6;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        .badge {
            display: inline-block;
            background: var(--primary);
            color: var(--text-white);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .badge-secondary {
            background: var(--secondary);
            color: var(--text-primary);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--transition);
            border: 2px solid transparent;
            background: var(--primary);
            color: var(--text-white);
            box-shadow: var(--shadow-sm);
        }
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            color: var(--text-white);
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: var(--text-white);
            border-color: var(--primary);
        }
        .btn-secondary {
            background: var(--secondary);
            color: var(--text-primary);
        }
        .btn-secondary:hover {
            background: var(--secondary-light);
            color: var(--text-primary);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            transition: opacity var(--transition);
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .logo:hover {
            color: var(--primary);
            opacity: 0.85;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .main-nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .main-nav a i {
            font-size: 0.9rem;
        }
        .main-nav a:hover {
            background: rgba(106, 76, 156, 0.08);
            color: var(--primary);
        }
        .main-nav a.active {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: var(--shadow-sm);
        }
        .main-nav a.active:hover {
            background: var(--primary-dark);
        }
        .main-nav a.nav-cta {
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            color: var(--text-primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
            padding: 8px 20px;
        }
        .main-nav a.nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(106, 76, 156, 0.08);
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #3a2560 60%, #2d1b4e 100%);
            position: relative;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-light), transparent);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .page-hero .hero-tags {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .page-hero .hero-tags span {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            color: var(--text-white);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        /* ===== Card Components ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-color);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 24px;
        }
        .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .card-body p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .card-body .card-tag {
            display: inline-block;
            background: rgba(106, 76, 156, 0.1);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
        }
        .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
        }
        .card-body .card-link i {
            transition: transform var(--transition);
        }
        .card-body .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Grid Layouts ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }

        /* ===== Guide Intro Section ===== */
        .guide-intro {
            background: var(--bg-white);
        }
        .guide-intro .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .guide-intro .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .guide-intro .intro-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .guide-intro .intro-content h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .guide-intro .intro-content p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .guide-intro .intro-features {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 20px;
        }
        .guide-intro .intro-features span {
            display: flex;
            align-items: center;
            gap: 6px;
            background: rgba(106, 76, 156, 0.06);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.88rem;
            color: var(--text-secondary);
        }
        .guide-intro .intro-features span i {
            color: var(--primary);
        }

        /* ===== Projects Section ===== */
        .projects-section {
            background: var(--bg-light);
        }
        .projects-section .project-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .projects-section .project-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .projects-section .project-card .icon-box {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            background: linear-gradient(135deg, rgba(106, 76, 156, 0.1), rgba(232, 168, 124, 0.1));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
        }
        .projects-section .project-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .projects-section .project-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== Hot Events Section ===== */
        .hot-section {
            background: var(--bg-white);
        }
        .hot-section .hot-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .hot-section .hot-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            align-items: flex-start;
        }
        .hot-section .hot-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .hot-section .hot-card .hot-rank {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--border-color);
            min-width: 40px;
            line-height: 1;
        }
        .hot-section .hot-card:nth-child(1) .hot-rank {
            color: var(--secondary);
        }
        .hot-section .hot-card:nth-child(2) .hot-rank {
            color: var(--secondary);
        }
        .hot-section .hot-card:nth-child(3) .hot-rank {
            color: var(--secondary);
        }
        .hot-section .hot-card .hot-info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .hot-section .hot-card .hot-info p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .hot-section .hot-card .hot-info .hot-meta {
            display: flex;
            gap: 16px;
            margin-top: 8px;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .hot-section .hot-card .hot-info .hot-meta i {
            margin-right: 4px;
        }

        /* ===== Service Info Section ===== */
        .service-section {
            background: var(--bg-light);
        }
        .service-section .service-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .service-section .service-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
        }
        .service-section .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .service-section .service-card .service-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .service-section .service-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .service-section .service-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .service-section .service-card .service-badge {
            display: inline-block;
            margin-top: 12px;
            background: rgba(106, 76, 156, 0.08);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 14px;
            border-radius: 50px;
        }

        /* ===== Stats Section ===== */
        .stats-section {
            background: var(--bg-dark);
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .stats-section .container {
            position: relative;
            z-index: 2;
        }
        .stats-section .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stats-section .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1.2;
        }
        .stats-section .stat-item .stat-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            background: var(--bg-white);
        }
        .faq-section .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-section .faq-item {
            background: var(--bg-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: box-shadow var(--transition);
        }
        .faq-section .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-section .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            color: var(--text-primary);
            background: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-section .faq-question:hover {
            background: rgba(106, 76, 156, 0.04);
        }
        .faq-section .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 0.9rem;
        }
        .faq-section .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-section .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-section .faq-answer.open {
            display: block;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 540px;
            margin: 0 auto 28px;
        }
        .cta-section .btn {
            background: var(--text-white);
            color: var(--primary);
            font-weight: 700;
        }
        .cta-section .btn:hover {
            background: var(--secondary);
            color: var(--text-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-brand .logo {
            color: var(--text-white);
            margin-bottom: 14px;
            font-size: 1.3rem;
        }
        .site-footer .footer-brand .logo i {
            color: var(--secondary);
        }
        .site-footer .footer-brand .logo span {
            -webkit-text-fill-color: var(--text-white);
            background: none;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .site-footer .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--secondary);
        }
        .site-footer .footer-col a i {
            width: 20px;
            margin-right: 6px;
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-footer .footer-bottom p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom-links {
            display: flex;
            gap: 20px;
        }
        .site-footer .footer-bottom-links a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition);
        }
        .site-footer .footer-bottom-links a:hover {
            color: var(--secondary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .stats-section .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .service-section .service-grid {
                grid-template-columns: 1fr 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 8px;
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition);
                border-bottom: 1px solid var(--border-light);
                max-height: 70vh;
                overflow-y: auto;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .main-nav a {
                width: 100%;
                justify-content: center;
                padding: 12px 16px;
                font-size: 1rem;
            }
            .main-nav a.nav-cta {
                margin-top: 4px;
            }

            .page-hero h1 {
                font-size: 2.2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }

            .section-title {
                font-size: 1.7rem;
            }
            .section-padding {
                padding: 56px 0;
            }

            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .guide-intro .intro-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .guide-intro .intro-image img {
                height: 240px;
            }
            .hot-section .hot-grid {
                grid-template-columns: 1fr;
            }
            .service-section .service-grid {
                grid-template-columns: 1fr;
            }
            .stats-section .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-section .stat-item .stat-number {
                font-size: 2rem;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero {
                padding: 120px 0 56px;
                min-height: 280px;
            }
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .page-hero .hero-tags span {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
            .card-body {
                padding: 18px;
            }
            .card-body h3 {
                font-size: 1.05rem;
            }
            .stats-section .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stats-section .stat-item .stat-number {
                font-size: 1.7rem;
            }
            .faq-section .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-section .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.88rem;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .site-footer {
                padding: 40px 0 0;
            }
            .cta-section {
                padding: 48px 0;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c3fc5;
            --primary-light: #8b5cf6;
            --primary-dark: #4a2d8a;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #ec4899;
            --bg: #f8f7fc;
            --bg-card: #ffffff;
            --bg-dark: #1a1028;
            --bg-section: #f0edf7;
            --text: #1f1137;
            --text-light: #6b5b7e;
            --text-white: #fdfbff;
            --border: #e2d9f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(108, 63, 197, 0.10);
            --shadow-hover: 0 12px 40px rgba(108, 63, 197, 0.18);
            --shadow-lg: 0 20px 60px rgba(108, 63, 197, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-h: 76px;
            --gap: 28px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(26, 16, 40, 0.92);
            backdrop-filter: blur(16px) saturate(1.2);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
            height: var(--header-h);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 0.5px;
            text-decoration: none;
            white-space: nowrap;
        }
        .logo i {
            color: var(--secondary);
            font-size: 26px;
        }
        .logo span {
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover span {
            background: linear-gradient(135deg, #fcd34d, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .main-nav a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
            transition: var(--transition);
            white-space: nowrap;
            background: transparent;
            border: 1px solid transparent;
        }
        .main-nav a i {
            font-size: 14px;
            opacity: 0.8;
        }
        .main-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.10);
            transform: translateY(-1px);
        }
        .main-nav a.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(108, 63, 197, 0.35);
        }
        .main-nav a.active:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
        }
        .main-nav a.nav-cta {
            background: linear-gradient(135deg, var(--secondary), #d97706);
            color: #1f1137;
            font-weight: 700;
            border: none;
            padding: 8px 22px;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.30);
        }
        .main-nav a.nav-cta:hover {
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.40);
            color: #1f1137;
        }

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            font-size: 20px;
            cursor: pointer;
            transition: var(--transition);
            align-items: center;
            justify-content: center;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.15);
        }

        /* ===== Article Hero / Banner ===== */
        .article-banner {
            position: relative;
            padding: 60px 0 40px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            isolation: isolate;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 16, 40, 0.85) 20%, rgba(108, 63, 197, 0.50) 80%);
            z-index: 0;
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
        }
        .article-banner .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
        }
        .article-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
        }
        .article-banner .breadcrumb a:hover {
            color: #fff;
        }
        .article-banner .breadcrumb span {
            color: rgba(255, 255, 255, 0.5);
        }
        .article-banner .breadcrumb i {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.3);
        }
        .article-banner h1 {
            font-size: clamp(26px, 4vw, 42px);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            max-width: 800px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
            margin-bottom: 16px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 28px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i {
            font-size: 14px;
            opacity: 0.7;
        }
        .article-meta .category-badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 40px 0 60px;
            flex: 1;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 44px;
            overflow: hidden;
        }
        .article-body .cover-image {
            width: 100%;
            border-radius: var(--radius-sm);
            margin-bottom: 28px;
            object-fit: cover;
            max-height: 480px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }
        .article-body .content {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body .content p {
            margin-bottom: 20px;
        }
        .article-body .content h2,
        .article-body .content h3 {
            margin-top: 32px;
            margin-bottom: 16px;
            font-weight: 700;
            color: var(--text);
        }
        .article-body .content h2 {
            font-size: 24px;
        }
        .article-body .content h3 {
            font-size: 20px;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin-bottom: 20px;
            padding-left: 24px;
            list-style: disc;
        }
        .article-body .content ol {
            list-style: decimal;
        }
        .article-body .content li {
            margin-bottom: 6px;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary-light);
            padding: 12px 20px;
            margin: 20px 0;
            background: var(--bg-section);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body .content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .content a:hover {
            color: var(--primary-light);
        }
        .article-body .content img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            background: var(--bg-section);
            color: var(--text-light);
            font-size: 13px;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .article-tags .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .article-nav {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 16px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 20px;
            border-radius: 50px;
            background: var(--bg-section);
            color: var(--text);
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
            border: 1px solid var(--border);
            max-width: 48%;
        }
        .article-nav a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .article-nav a i {
            font-size: 14px;
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px 22px;
            border: 1px solid var(--border);
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text);
        }
        .sidebar-card h3 i {
            color: var(--primary);
            font-size: 18px;
        }
        .sidebar-card .related-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-card .related-list a {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            background: var(--bg-section);
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .sidebar-card .related-list a:hover {
            background: var(--bg-card);
            border-color: var(--border);
            transform: translateX(4px);
            box-shadow: var(--shadow);
        }
        .sidebar-card .related-list a img {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-xs);
            object-fit: cover;
            flex-shrink: 0;
        }
        .sidebar-card .related-list a .related-info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-card .related-list a .related-info .related-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.3;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-card .related-list a .related-info .related-date {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 4px;
        }
        .sidebar-card .cta-mini {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 6px;
        }
        .sidebar-card .cta-mini p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }
        .sidebar-card .cta-mini .btn {
            width: 100%;
            text-align: center;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            text-decoration: none;
            line-height: 1.2;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 63, 197, 0.30);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(108, 63, 197, 0.40);
            color: #fff;
        }
        .btn-secondary {
            background: linear-gradient(135deg, var(--secondary), #d97706);
            color: #1f1137;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.25);
        }
        .btn-secondary:hover {
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.35);
            color: #1f1137;
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 16px 44px;
            font-size: 17px;
        }

        /* ===== CTA Section ===== */
        .section-cta {
            padding: 60px 0;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            isolation: isolate;
            position: relative;
        }
        .section-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 16, 40, 0.88) 20%, rgba(108, 63, 197, 0.55) 80%);
            z-index: 0;
        }
        .section-cta .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .section-cta h2 {
            font-size: clamp(24px, 3.6vw, 38px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .section-cta p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .section-cta .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        /* ===== FAQ ===== */
        .section-faq {
            padding: 60px 0;
            background: var(--bg-section);
        }
        .section-faq .section-title {
            text-align: center;
            font-size: clamp(22px, 3vw, 34px);
            font-weight: 800;
            margin-bottom: 36px;
            color: var(--text);
        }
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            color: var(--primary);
            font-size: 14px;
            transition: var(--transition);
        }
        .faq-item[open] summary i {
            transform: rotate(180deg);
        }
        .faq-item summary:hover {
            background: var(--bg-section);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Empty State ===== */
        .not-found-state {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-state i {
            font-size: 64px;
            color: var(--border);
            margin-bottom: 20px;
        }
        .not-found-state h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }
        .not-found-state p {
            font-size: 16px;
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .not-found-state .btn {
            margin: 0 auto;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-col a i {
            margin-right: 8px;
            width: 18px;
            opacity: 0.7;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
            font-size: 13px;
            transition: var(--transition);
        }
        .footer-bottom-links a:hover {
            color: var(--secondary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 64px;
                --gap: 20px;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(26, 16, 40, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 6px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
                pointer-events: none;
                border-radius: 0 0 var(--radius) var(--radius);
                max-height: 70vh;
                overflow-y: auto;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 18px;
                border-radius: var(--radius-xs);
                font-size: 15px;
                justify-content: flex-start;
            }
            .main-nav a.nav-cta {
                margin-top: 8px;
                justify-content: center;
            }
            .article-banner {
                padding: 40px 0 28px;
                min-height: 200px;
            }
            .article-banner h1 {
                font-size: 22px;
            }
            .article-body {
                padding: 24px 20px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .article-nav a {
                max-width: 100%;
                flex: 1;
            }
            .article-nav {
                flex-direction: column;
            }
            .section-cta h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .article-body {
                padding: 18px 14px;
            }
            .article-meta {
                font-size: 12px;
                gap: 10px 16px;
            }
            .article-banner h1 {
                font-size: 20px;
            }
            .btn {
                padding: 10px 22px;
                font-size: 14px;
            }
            .btn-lg {
                padding: 14px 30px;
                font-size: 15px;
            }
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 20px;
            }
            .faq-item summary {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-item .faq-answer {
                padding: 0 16px 16px;
                font-size: 14px;
            }
        }