/* roulang page: index */
:root {
      --bg-primary: #08090F;
      --bg-secondary: #0D111E;
      --bg-tertiary: #111827;
      --accent-blue: #0052FF;
      --accent-cyan: #00F0FF;
      --accent-purple: #7C3AED;
      --text-white: #FFFFFF;
      --text-silver: #CBD5E1;
      --text-muted: #94A3B8;
      --text-dark: #1E293B;
      --glass-bg: rgba(13, 17, 30, 0.68);
      --glass-bg-light: rgba(255, 255, 255, 0.06);
      --glass-border: rgba(255, 255, 255, 0.12);
      --glass-border-hover: rgba(0, 240, 255, 0.45);
      --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.35);
      --glow-blue: 0 0 30px rgba(0, 82, 255, 0.4);
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-xl: 32px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
      --shadow-glow: 0 0 40px rgba(0, 240, 255, 0.15);
      --font-main: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: var(--font-main);
      background: var(--bg-primary);
      color: var(--text-white);
      line-height: 1.6;
      overflow-x: hidden;
      min-height: 100vh;
    }

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

    a:hover {
      color: var(--accent-cyan);
    }

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

    button,
    input,
    textarea,
    select {
      font-family: var(--font-main);
      font-size: 0.95rem;
    }

    button:focus,
    input:focus,
    textarea:focus,
    select:focus {
      outline: 2px solid var(--accent-cyan);
      outline-offset: 2px;
    }

    .container-custom {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .section-padding {
      padding: 72px 0;
    }

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

    .bg-glass {
      background: var(--glass-bg);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--glass-border);
    }

    .bg-glass-light {
      background: var(--glass-bg-light);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border: 1px solid var(--glass-border);
    }

    .btn-glow {
      background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
      border: none;
      color: #FFFFFF;
      padding: 14px 32px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 1rem;
      letter-spacing: 0.3px;
      transition: var(--transition);
      box-shadow: 0 0 24px rgba(0, 240, 255, 0.3);
      position: relative;
      overflow: hidden;
    }

    .btn-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 40px rgba(0, 240, 255, 0.55);
      color: #FFFFFF;
    }

    .btn-glow:active {
      transform: translateY(0) scale(0.97);
      box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
    }

    .btn-outline-neon {
      background: transparent;
      border: 2px solid var(--accent-cyan);
      color: var(--accent-cyan);
      padding: 12px 28px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.95rem;
      transition: var(--transition);
    }

    .btn-outline-neon:hover {
      background: var(--accent-cyan);
      color: var(--bg-primary);
      box-shadow: 0 0 28px rgba(0, 240, 255, 0.5);
    }

    .btn-text-neon {
      background: transparent;
      border: none;
      color: var(--text-silver);
      padding: 12px 20px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.95rem;
      transition: var(--transition);
    }

    .btn-text-neon:hover {
      color: var(--accent-cyan);
      background: rgba(0, 240, 255, 0.08);
    }

    .badge-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0, 240, 255, 0.12);
      border: 1px solid rgba(0, 240, 255, 0.35);
      color: var(--accent-cyan);
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 0.8rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }

    .badge-hot {
      background: linear-gradient(135deg, #FF4500, #FF6B35);
      border: none;
      color: #FFFFFF;
      padding: 4px 12px;
      border-radius: 50px;
      font-size: 0.7rem;
      font-weight: 800;
      letter-spacing: 1px;
      text-transform: uppercase;
      box-shadow: 0 0 14px rgba(255, 69, 0, 0.5);
    }

    .badge-new {
      background: linear-gradient(135deg, #10B981, #34D399);
      border: none;
      color: #FFFFFF;
      padding: 4px 12px;
      border-radius: 50px;
      font-size: 0.7rem;
      font-weight: 800;
      letter-spacing: 1px;
      text-transform: uppercase;
      box-shadow: 0 0 14px rgba(16, 185, 129, 0.5);
    }

    .text-gradient {
      background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 50%, var(--accent-purple) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .section-label {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--accent-cyan);
      margin-bottom: 12px;
    }

    .section-title {
      font-size: clamp(1.8rem, 4vw, 2.6rem);
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 1.05rem;
      line-height: 1.7;
      color: var(--text-muted);
      max-width: 640px;
      margin-bottom: 32px;
    }

    /* Header / Navbar */
    .navbar-custom {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: rgba(8, 9, 15, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 0;
      min-height: 72px;
      display: flex;
      align-items: center;
    }

    .navbar-custom .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      flex-wrap: wrap;
    }

    .navbar-brand-custom {
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--text-white);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 8px;
      white-space: nowrap;
    }

    .navbar-brand-custom .brand-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      color: #fff;
      box-shadow: var(--glow-cyan);
    }

    .navbar-brand-custom .brand-text {
      font-size: 0.95rem;
      line-height: 1.2;
    }

    .navbar-custom .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .navbar-custom .nav-links a {
      display: block;
      padding: 10px 18px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.9rem;
      color: var(--text-silver);
      transition: var(--transition);
      white-space: nowrap;
    }

    .navbar-custom .nav-links a:hover {
      color: var(--accent-cyan);
      background: rgba(0, 240, 255, 0.08);
    }

    .navbar-custom .nav-links a.active {
      color: var(--accent-cyan);
      background: rgba(0, 240, 255, 0.12);
      border: 1px solid rgba(0, 240, 255, 0.25);
    }

    .navbar-custom .btn-group-auth {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .navbar-custom .btn-login {
      background: transparent;
      border: none;
      color: var(--text-silver);
      padding: 10px 18px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.9rem;
      transition: var(--transition);
      white-space: nowrap;
    }

    .navbar-custom .btn-login:hover {
      color: var(--accent-cyan);
      background: rgba(0, 240, 255, 0.08);
    }

    .navbar-custom .btn-signup {
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
      border: none;
      color: #fff;
      padding: 10px 24px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 0.85rem;
      transition: var(--transition);
      box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
      white-space: nowrap;
    }

    .navbar-custom .btn-signup:hover {
      transform: translateY(-1px);
      box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
      color: #fff;
    }

    .navbar-toggler-custom {
      display: none;
      background: transparent;
      border: 1px solid var(--glass-border);
      border-radius: 10px;
      padding: 8px 12px;
      color: var(--text-white);
      font-size: 1.3rem;
      cursor: pointer;
      transition: var(--transition);
    }

    .navbar-toggler-custom:hover {
      border-color: var(--accent-cyan);
      color: var(--accent-cyan);
    }

    .mobile-menu-collapse {
      display: none;
      width: 100%;
      background: rgba(8, 9, 15, 0.97);
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 16px 0;
    }

    .mobile-menu-collapse.open {
      display: block;
    }

    .mobile-menu-collapse .nav-links {
      flex-direction: column;
      gap: 4px;
      padding: 0 20px;
    }

    .mobile-menu-collapse .nav-links a {
      width: 100%;
      text-align: left;
      padding: 12px 16px;
    }

    /* Hero Section - Full Width Video Overlay */
    .hero-video {
      position: relative;
      min-height: 92vh;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
      background: var(--bg-primary);
      margin-top: 72px;
    }

    .hero-video .hero-bg {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-1.jpg');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      filter: brightness(0.35) saturate(1.15);
    }

    .hero-video .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(8, 9, 15, 0.7) 0%, rgba(8, 9, 15, 0.45) 40%, rgba(8, 9, 15, 0.85) 100%);
    }

    .hero-video .hero-overlay::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse at center, rgba(13, 17, 30, 0.3) 0%, rgba(8, 9, 15, 0.55) 100%);
    }

    .hero-video .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 800px;
      padding: 40px 24px;
    }

    .hero-video .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(0, 240, 255, 0.1);
      border: 1px solid rgba(0, 240, 255, 0.3);
      color: var(--accent-cyan);
      padding: 8px 20px;
      border-radius: 50px;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      margin-bottom: 20px;
    }

    .hero-video .hero-badge .pulse-dot {
      width: 8px;
      height: 8px;
      background: var(--accent-cyan);
      border-radius: 50%;
      display: inline-block;
      animation: pulse-dot 1.6s ease-in-out infinite;
    }

    @keyframes pulse-dot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.3; transform: scale(1.6); }
    }

    .hero-video h1 {
      font-size: clamp(2rem, 5vw, 3.4rem);
      font-weight: 900;
      line-height: 1.2;
      letter-spacing: -1px;
      margin-bottom: 20px;
      color: var(--text-white);
    }

    .hero-video .hero-subtitle {
      font-size: 1.1rem;
      line-height: 1.7;
      color: var(--text-silver);
      max-width: 600px;
      margin: 0 auto 28px;
    }

    .hero-video .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      flex-wrap: wrap;
      margin-bottom: 28px;
    }

    .hero-video .btn-play {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.25);
      color: var(--text-white);
      padding: 14px 30px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.95rem;
      backdrop-filter: blur(8px);
      transition: var(--transition);
    }

    .hero-video .btn-play:hover {
      background: rgba(255, 255, 255, 0.2);
      border-color: var(--accent-cyan);
      color: var(--accent-cyan);
      transform: translateY(-1px);
    }

    .hero-video .btn-play .play-icon {
      width: 22px;
      height: 22px;
      background: var(--accent-cyan);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.7rem;
      color: var(--bg-primary);
    }

    .hero-video .hero-stats {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 40px;
      flex-wrap: wrap;
    }

    .hero-video .stat-item {
      text-align: center;
    }

    .hero-video .stat-item .stat-value {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--text-white);
      line-height: 1.2;
    }

    .hero-video .stat-item .stat-label {
      font-size: 0.8rem;
      color: var(--text-muted);
      letter-spacing: 0.5px;
      text-transform: uppercase;
      font-weight: 500;
    }

    /* Directory Section */
    .directory-section {
      background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    }

    .directory-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 20px;
      margin-top: 40px;
    }

    .directory-item {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: var(--transition);
      cursor: pointer;
      position: relative;
      overflow: hidden;
    }

    .directory-item::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
      opacity: 0;
      transition: var(--transition);
    }

    .directory-item:hover {
      border-color: var(--glass-border-hover);
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }

    .directory-item:hover::before {
      opacity: 1;
    }

    .directory-item .dir-icon {
      width: 48px;
      height: 48px;
      background: rgba(0, 240, 255, 0.12);
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      color: var(--accent-cyan);
      margin-bottom: 16px;
    }

    .directory-item h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-white);
    }

    .directory-item p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 12px;
    }

    .directory-item .dir-link {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--accent-cyan);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .directory-item .dir-link i {
      transition: transform 0.3s ease;
    }

    .directory-item .dir-link:hover i {
      transform: translateX(4px);
    }

    /* Value Points */
    .value-section {
      background: var(--bg-secondary);
    }

    .value-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 40px;
    }

    .value-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      transition: var(--transition);
    }

    .value-card:hover {
      border-color: var(--glass-border-hover);
      box-shadow: var(--shadow-glow);
      transform: translateY(-3px);
    }

    .value-card .value-icon {
      font-size: 2rem;
      color: var(--accent-cyan);
      margin-bottom: 16px;
    }

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

    .value-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* Promo Ladder */
    .promo-section {
      background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    }

    .promo-ladder {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 40px;
      position: relative;
    }

    .promo-ladder::before {
      content: '';
      position: absolute;
      top: 24px;
      left: 10%;
      right: 10%;
      height: 2px;
      background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue), var(--accent-cyan), #10B981);
      z-index: 0;
      opacity: 0.4;
    }

    .promo-step {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      transition: var(--transition);
      position: relative;
      z-index: 1;
    }

    .promo-step:hover {
      border-color: var(--glass-border-hover);
      box-shadow: var(--shadow-glow);
      transform: translateY(-4px);
    }

    .promo-step .step-badge {
      width: 44px;
      height: 44px;
      margin: 0 auto 16px;
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      color: #fff;
      box-shadow: var(--glow-cyan);
    }

    .promo-step h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-white);
    }

    .promo-step .step-amount {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--accent-cyan);
      margin-bottom: 6px;
    }

    .promo-step p {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 12px;
      line-height: 1.5;
    }

    .promo-step .btn-claim {
      background: transparent;
      border: 1px solid rgba(0, 240, 255, 0.4);
      color: var(--accent-cyan);
      padding: 8px 18px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.8rem;
      transition: var(--transition);
    }

    .promo-step .btn-claim:hover {
      background: var(--accent-cyan);
      color: var(--bg-primary);
      box-shadow: var(--glow-cyan);
    }

    /* News Section - CMS Loop */
    .news-section {
      background: var(--bg-primary);
    }

    .news-layout {
      display: grid;
      grid-template-columns: 1fr 360px;
      gap: 32px;
      margin-top: 40px;
    }

    .news-main-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .news-main-list li {
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      padding: 18px 0;
      transition: var(--transition);
    }

    .news-main-list li:first-child {
      padding-top: 0;
    }

    .news-main-list li:hover {
      padding-left: 8px;
    }

    .news-main-list a {
      display: block;
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-white);
      line-height: 1.5;
      transition: var(--transition);
    }

    .news-main-list a:hover {
      color: var(--accent-cyan);
    }

    .news-main-list .news-meta {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    .news-main-list .news-category {
      display: inline-block;
      background: rgba(0, 240, 255, 0.1);
      color: var(--accent-cyan);
      font-size: 0.7rem;
      font-weight: 600;
      padding: 2px 10px;
      border-radius: 50px;
      margin-right: 8px;
    }

    .news-recommend {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      align-self: start;
      position: sticky;
      top: 100px;
    }

    .news-recommend h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-white);
      padding-bottom: 12px;
      border-bottom: 2px solid rgba(0, 240, 255, 0.2);
    }

    .news-recommend .rec-item {
      display: flex;
      gap: 12px;
      margin-bottom: 16px;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      transition: var(--transition);
    }

    .news-recommend .rec-item:last-child {
      margin-bottom: 0;
      padding-bottom: 0;
      border-bottom: none;
    }

    .news-recommend .rec-item:hover {
      transform: translateX(4px);
    }

    .news-recommend .rec-item .rec-img {
      width: 70px;
      height: 50px;
      border-radius: 8px;
      object-fit: cover;
      flex-shrink: 0;
    }

    .news-recommend .rec-item .rec-info h5 {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-white);
      line-height: 1.4;
      margin-bottom: 4px;
    }

    .news-recommend .rec-item .rec-info span {
      font-size: 0.7rem;
      color: var(--text-muted);
    }

    .news-empty {
      text-align: center;
      padding: 40px 20px;
      color: var(--text-muted);
      font-size: 0.95rem;
      border: 1px dashed var(--glass-border);
      border-radius: var(--radius-md);
      background: var(--glass-bg-light);
    }

    /* Guest Highlights */
    .guest-section {
      background: var(--bg-secondary);
    }

    .guest-track {
      display: flex;
      gap: 16px;
      overflow-x: auto;
      padding: 20px 4px;
      scroll-snap-type: x mandatory;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: thin;
      scrollbar-color: rgba(0, 240, 255, 0.3) transparent;
    }

    .guest-track::-webkit-scrollbar {
      height: 5px;
    }

    .guest-track::-webkit-scrollbar-track {
      background: transparent;
    }

    .guest-track::-webkit-scrollbar-thumb {
      background: rgba(0, 240, 255, 0.3);
      border-radius: 10px;
    }

    .guest-card {
      min-width: 260px;
      scroll-snap-align: start;
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
    }

    .guest-card:hover {
      border-color: var(--glass-border-hover);
      box-shadow: var(--shadow-glow);
      transform: translateY(-3px);
    }

    .guest-card .guest-avatar {
      width: 60px;
      height: 60px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 14px;
      box-shadow: 0 0 20px rgba(124, 58, 237, 0.4);
    }

    .guest-card h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 6px;
    }

    .guest-card .guest-title {
      font-size: 0.8rem;
      color: var(--accent-cyan);
      font-weight: 600;
      margin-bottom: 8px;
    }

    .guest-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.55;
      margin-bottom: 12px;
    }

    .guest-card .btn-guest {
      background: transparent;
      border: 1px solid rgba(0, 240, 255, 0.35);
      color: var(--accent-cyan);
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 0.8rem;
      font-weight: 600;
      transition: var(--transition);
    }

    .guest-card .btn-guest:hover {
      background: var(--accent-cyan);
      color: var(--bg-primary);
    }

    /* Media Spotlight */
    .media-section {
      background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    }

    .media-track {
      display: flex;
      gap: 16px;
      overflow-x: auto;
      padding: 20px 4px;
      scroll-snap-type: x mandatory;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: thin;
      scrollbar-color: rgba(0, 240, 255, 0.3) transparent;
    }

    .media-track::-webkit-scrollbar {
      height: 5px;
    }

    .media-track::-webkit-scrollbar-thumb {
      background: rgba(0, 240, 255, 0.3);
      border-radius: 10px;
    }

    .media-card {
      min-width: 300px;
      scroll-snap-align: start;
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .media-card:hover {
      border-color: var(--glass-border-hover);
      box-shadow: var(--shadow-glow);
      transform: translateY(-4px);
    }

    .media-card .media-img {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }

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

    .media-card .media-type {
      display: inline-block;
      font-size: 0.7rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--accent-cyan);
      margin-bottom: 8px;
    }

    .media-card h5 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 6px;
      line-height: 1.4;
    }

    .media-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.55;
      margin-bottom: 10px;
    }

    .media-card .media-link {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--accent-cyan);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* Download / Lead Form */
    .download-section {
      background: var(--bg-primary);
      position: relative;
      overflow: hidden;
    }

    .download-section::before {
      content: '';
      position: absolute;
      top: -200px;
      left: 50%;
      transform: translateX(-50%);
      width: 800px;
      height: 800px;
      background: radial-gradient(circle, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
      pointer-events: none;
    }

    .download-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-lg);
      padding: 48px 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      position: relative;
      z-index: 1;
    }

    .download-info h2 {
      font-size: clamp(1.5rem, 3vw, 2rem);
      font-weight: 800;
      margin-bottom: 14px;
      color: var(--text-white);
      letter-spacing: -0.5px;
    }

    .download-info p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }

    .download-form .form-control-custom {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 12px;
      color: var(--text-white);
      padding: 14px 18px;
      font-size: 0.9rem;
      width: 100%;
      transition: var(--transition);
    }

    .download-form .form-control-custom::placeholder {
      color: rgba(255, 255, 255, 0.4);
    }

    .download-form .form-control-custom:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
      outline: none;
      background: rgba(255, 255, 255, 0.08);
    }

    .download-form .form-group {
      margin-bottom: 14px;
    }

    .download-form .btn-submit {
      width: 100%;
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
      border: none;
      color: #fff;
      padding: 14px;
      border-radius: 12px;
      font-weight: 700;
      font-size: 0.95rem;
      transition: var(--transition);
      box-shadow: var(--glow-cyan);
    }

    .download-form .btn-submit:hover {
      transform: translateY(-1px);
      box-shadow: 0 0 36px rgba(0, 240, 255, 0.5);
    }

    .form-note {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-top: 10px;
      text-align: center;
    }

    /* Footer */
    .footer-custom {
      background: #05060A;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 56px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 32px;
      margin-bottom: 40px;
    }

    .footer-brand .footer-logo {
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--text-white);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-brand p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .footer-col h5 {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 16px;
      letter-spacing: 0.3px;
    }

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

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

    .footer-col ul li a {
      font-size: 0.85rem;
      color: var(--text-muted);
      transition: var(--transition);
    }

    .footer-col ul li a:hover {
      color: var(--accent-cyan);
      padding-left: 4px;
    }

    .footer-bottom {
      text-align: center;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* FAB - Cyber & Neon Style */
    .fab-neon {
      position: fixed;
      left: 16px;
      bottom: 96px;
      z-index: 1050;
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: rgba(0, 0, 0, 0.75);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border: 2px solid var(--accent-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: var(--accent-cyan);
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 0 20px rgba(0, 240, 255, 0.4), inset 0 0 12px rgba(0, 240, 255, 0.1);
      animation: fab-breathe 2.2s ease-in-out infinite;
      min-width: 48px;
      min-height: 48px;
      touch-action: manipulation;
    }

    .fab-neon:hover {
      box-shadow: 0 0 35px rgba(0, 240, 255, 0.6), inset 0 0 20px rgba(0, 240, 255, 0.2);
      transform: scale(1.08);
      animation-play-state: paused;
    }

    .fab-neon:active {
      transform: scale(0.92);
      border-color: #FF007F;
      color: #FF007F;
      box-shadow: 0 0 28px rgba(255, 0, 127, 0.5);
    }

    .fab-neon .fab-dot {
      position: absolute;
      top: -2px;
      right: -2px;
      width: 12px;
      height: 12px;
      background: #FF007F;
      border-radius: 50%;
      border: 2px solid var(--bg-primary);
      animation: fab-dot-blink 1.4s ease-in-out infinite;
    }

    @keyframes fab-breathe {
      0%, 100% { box-shadow: 0 0 20px rgba(0, 240, 255, 0.4); }
      50% { box-shadow: 0 0 32px rgba(0, 240, 255, 0.65); }
    }

    @keyframes fab-dot-blink {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.2; }
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .container-custom { padding: 0 18px; }
      .value-grid { grid-template-columns: repeat(2, 1fr); }
      .promo-ladder { grid-template-columns: repeat(2, 1fr); }
      .promo-ladder::before { display: none; }
      .news-layout { grid-template-columns: 1fr; }
      .news-recommend { position: static; }
      .download-card { grid-template-columns: 1fr; padding: 32px 24px; }
      .directory-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .navbar-custom .nav-container {
        flex-wrap: wrap;
        padding: 12px 18px;
      }

      .navbar-custom .nav-links {
        display: none;
      }

      .navbar-custom .btn-group-auth {
        display: flex;
        gap: 6px;
      }

      .navbar-custom .btn-login {
        padding: 8px 14px;
        font-size: 0.8rem;
      }

      .navbar-custom .btn-signup {
        padding: 8px 16px;
        font-size: 0.75rem;
      }

      .navbar-toggler-custom {
        display: block;
      }

      .hero-video {
        min-height: 80vh;
        margin-top: 64px;
      }

      .hero-video .hero-content { padding: 30px 18px; }
      .hero-video .hero-stats { gap: 20px; }
      .hero-video .stat-item .stat-value { font-size: 1.3rem; }

      .value-grid { grid-template-columns: 1fr; }
      .promo-ladder { grid-template-columns: 1fr; }
      .directory-grid { grid-template-columns: 1fr; }
      .section-padding { padding: 48px 0; }
      .guest-card { min-width: 240px; }
      .media-card { min-width: 260px; }
      .navbar-brand-custom .brand-text { font-size: 0.8rem; }
    }

    @media (max-width: 520px) {
      .container-custom { padding: 0 14px; }
      .hero-video { min-height: 75vh; }
      .hero-video .hero-actions { flex-direction: column; width: 100%; }
      .hero-video .hero-actions .btn-glow,
      .hero-video .hero-actions .btn-play { width: 100%; justify-content: center; }
      .hero-video .hero-stats { gap: 16px; }
      .hero-video .stat-item .stat-value { font-size: 1.1rem; }
      .btn-glow { padding: 12px 24px; font-size: 0.9rem; }
      .download-card { padding: 24px 18px; }
      .navbar-custom .btn-login { font-size: 0.75rem; padding: 6px 10px; }
      .navbar-custom .btn-signup { font-size: 0.7rem; padding: 6px 12px; }
    }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-tertiary: #111827;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-purple: #7C3AED;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --text-dark: #1E293B;
            --glass-bg: rgba(13, 17, 30, 0.68);
            --glass-bg-light: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.12);
            --glass-border-hover: rgba(0, 240, 255, 0.45);
            --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.35);
            --glow-blue: 0 0 30px rgba(0, 82, 255, 0.4);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 40px rgba(0, 240, 255, 0.15);
            --font-main: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* roulang page: article */
        :root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-tertiary: #111827;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-purple: #7C3AED;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --text-dark: #1E293B;
            --glass-bg: rgba(13, 17, 30, 0.68);
            --glass-bg-light: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.12);
            --glass-border-hover: rgba(0, 240, 255, 0.45);
            --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.35);
            --glow-blue: 0 0 30px rgba(0, 82, 255, 0.4);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 40px rgba(0, 240, 255, 0.15);
            --font-main: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            position: relative;
        }

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

        a:hover {
            color: var(--accent-cyan);
        }

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

        button,
        input,
        textarea,
        select {
            font-family: var(--font-main);
            font-size: 0.95rem;
        }

        button:focus,
        input:focus,
        textarea:focus,
        select:focus {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

        .container-custom {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-padding {
            padding: 72px 0;
        }

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

        /* ===== Buttons ===== */
        .btn-glow {
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            border: none;
            color: #FFFFFF;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.3px;
            transition: var(--transition);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.3);
            position: relative;
            overflow: hidden;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
        }

        .btn-glow:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.55);
            color: #FFFFFF;
        }

        .btn-glow:active {
            transform: translateY(0) scale(0.97);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
        }

        .btn-outline-neon {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-outline-neon:hover {
            background: var(--accent-cyan);
            color: var(--bg-primary);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.5);
        }

        .btn-text-neon {
            background: transparent;
            border: none;
            color: var(--text-silver);
            padding: 12px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-text-neon:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        /* ===== Badges ===== */
        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.35);
            color: var(--accent-cyan);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .badge-hot {
            background: linear-gradient(135deg, #FF4500, #FF6B35);
            border: none;
            color: #FFFFFF;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 800;
            letter-spacing: 1px;
            text-transform: uppercase;
            box-shadow: 0 0 14px rgba(255, 69, 0, 0.5);
        }

        .badge-new {
            background: linear-gradient(135deg, #10B981, #34D399);
            border: none;
            color: #FFFFFF;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 800;
            letter-spacing: 1px;
            text-transform: uppercase;
            box-shadow: 0 0 14px rgba(16, 185, 129, 0.5);
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 50%, var(--accent-purple) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-desc {
            font-size: 1.05rem;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 32px;
        }

        /* ===== Header / Navbar ===== */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 0;
            min-height: 72px;
            display: flex;
            align-items: center;
        }

        .navbar-custom .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            flex-wrap: wrap;
        }

        .navbar-brand-custom {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .navbar-brand-custom .brand-icon-box {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-silver);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.25);
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-auth .btn-login {
            background: transparent;
            border: none;
            color: var(--text-silver);
            padding: 10px 18px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            cursor: pointer;
        }

        .nav-auth .btn-login:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-auth .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            border: none;
            color: #FFFFFF;
            padding: 10px 22px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
            white-space: nowrap;
        }

        .nav-auth .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.5);
        }

        .navbar-toggler-custom {
            display: none;
            background: transparent;
            border: 1px solid var(--glass-border);
            border-radius: 10px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            color: var(--text-white);
            font-size: 1.2rem;
            cursor: pointer;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .navbar-toggler-custom:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            padding-top: 72px;
            padding-bottom: 48px;
            background:
                radial-gradient(ellipse 400px 200px at 20% 20%, rgba(0, 82, 255, 0.15), transparent),
                radial-gradient(ellipse 300px 180px at 85% 30%, rgba(0, 240, 255, 0.1), transparent),
                var(--bg-secondary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .article-hero .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .article-hero .breadcrumb-custom a {
            color: var(--text-silver);
        }

        .article-hero .breadcrumb-custom a:hover {
            color: var(--accent-cyan);
        }

        .article-hero .breadcrumb-custom i {
            font-size: 0.6rem;
            color: var(--text-muted);
            margin: 0 4px;
        }

        .article-hero .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .article-hero .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .article-hero .article-meta i {
            color: var(--accent-cyan);
        }

        .article-hero h1 {
            font-size: clamp(1.8rem, 4.5vw, 3rem);
            font-weight: 900;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 18px;
            color: var(--text-white);
        }

        .article-hero .article-excerpt {
            font-size: 1.1rem;
            line-height: 1.75;
            color: var(--text-silver);
            max-width: 800px;
            margin-bottom: 0;
        }

        /* ===== Article Body ===== */
        .article-body-section {
            padding: 56px 0 64px;
            background: var(--bg-primary);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

        .article-main-content {
            background: var(--bg-secondary);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 40px;
            min-width: 0;
        }

        .article-main-content .article-cover-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 28px;
            aspect-ratio: 16/9;
            width: 100%;
        }

        .article-main-content .article-cover-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .article-content {
            font-size: 1.02rem;
            line-height: 1.75;
            color: var(--text-silver);
            word-break: break-word;
        }

        .article-content h1,
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--text-white);
            font-weight: 700;
            line-height: 1.4;
            margin-top: 2rem;
            margin-bottom: 1rem;
            letter-spacing: -0.3px;
        }

        .article-content h1 {
            font-size: 1.5rem;
        }

        .article-content h2 {
            font-size: 1.35rem;
        }

        .article-content h3 {
            font-size: 1.15rem;
        }

        .article-content p {
            margin-bottom: 1.25rem;
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 1.25rem;
            padding-left: 1.5rem;
            color: var(--text-silver);
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 0.5rem;
        }

        .article-content a {
            color: var(--accent-cyan);
            font-weight: 500;
        }

        .article-content a:hover {
            text-decoration: underline;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
        }

        .article-content blockquote {
            background: rgba(0, 240, 255, 0.06);
            border-left: 4px solid var(--accent-cyan);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
            color: var(--text-silver);
            font-style: italic;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.9rem;
        }

        .article-content table th,
        .article-content table td {
            padding: 12px 16px;
            border: 1px solid var(--glass-border);
            text-align: left;
            color: var(--text-silver);
        }

        .article-content table th {
            background: rgba(0, 240, 255, 0.06);
            color: var(--text-white);
            font-weight: 700;
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            position: sticky;
            top: 96px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: var(--bg-secondary);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 24px;
        }

        .sidebar-card h5 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .sidebar-card .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .sidebar-card .sidebar-list li a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-silver);
            transition: var(--transition);
        }

        .sidebar-card .sidebar-list li a:hover {
            color: var(--accent-cyan);
        }

        .sidebar-card .sidebar-list li a i {
            color: var(--accent-cyan);
            font-size: 0.8rem;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background:
                radial-gradient(ellipse 500px 250px at 50% 70%, rgba(0, 82, 255, 0.2), transparent),
                radial-gradient(ellipse 300px 150px at 30% 40%, rgba(0, 240, 255, 0.12), transparent),
                var(--bg-secondary);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            margin: 0 auto;
            text-align: center;
            border: 1px solid rgba(0, 240, 255, 0.2);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.05), rgba(0, 82, 255, 0.05));
            pointer-events: none;
            z-index: 0;
        }

        .cta-section>* {
            position: relative;
            z-index: 1;
        }

        .cta-section .section-title {
            margin-bottom: 12px;
        }

        .cta-section .section-desc {
            margin-left: auto;
            margin-right: auto;
            margin-bottom: 28px;
        }

        .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            background: var(--bg-primary);
        }

        .faq-item {
            background: var(--bg-secondary);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin-bottom: 14px;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--glass-border-hover);
            box-shadow: var(--shadow-glow);
        }

        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            cursor: pointer;
            border: none;
            background: transparent;
            width: 100%;
            text-align: left;
            padding: 0;
        }

        .faq-item .faq-question i {
            color: var(--accent-cyan);
            font-size: 1rem;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item .faq-answer {
            font-size: 0.95rem;
            line-height: 1.7;
            color: var(--text-muted);
            margin-top: 12px;
        }

        /* ===== Footer ===== */
        .footer-custom {
            background: var(--bg-secondary);
            border-top: 1px solid var(--glass-border);
            padding: 56px 0 32px;
            margin-top: 72px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand .footer-logo span:last-child {
            font-weight: 800;
            font-size: 1rem;
            color: var(--text-white);
            letter-spacing: -0.3px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 360px;
        }

        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            border-top: 1px solid var(--glass-border);
            padding-top: 24px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }

        .footer-bottom a {
            color: var(--text-muted);
            transition: var(--transition);
        }

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

        /* ===== Sticky Bottom CTA ===== */
        .sticky-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 900;
            background: rgba(8, 9, 15, 0.9);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid rgba(0, 240, 255, 0.25);
            padding: 12px 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            transform: translateY(100%);
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .sticky-bottom-bar.show {
            transform: translateY(0);
        }

        .sticky-bottom-bar .sb-text {
            font-size: 0.9rem;
            color: var(--text-silver);
            font-weight: 600;
        }

        .sticky-bottom-bar .btn-glow {
            padding: 10px 24px;
            font-size: 0.9rem;
        }

        /* ===== FAB ===== */
        .fab-fixed {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 950;
            width: 56px;
            height: 56px;
            border-radius: 50px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            opacity: 0.6;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: var(--transition);
        }

        .fab-fixed:hover {
            opacity: 1;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            transform: scale(1.08);
        }

        .fab-fixed:active {
            transform: scale(0.92);
            border-color: #FF007F;
            color: #FF007F;
            box-shadow: 0 0 24px rgba(255, 0, 127, 0.6);
        }

        .fab-fixed .fab-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #FF3B3B;
            border: 2px solid var(--bg-primary);
            animation: blink-dot 1.2s ease-in-out infinite;
        }

        @keyframes blink-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.2;
            }
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-secondary);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
        }

        .not-found-box .nf-icon {
            font-size: 3rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
        }

        .not-found-box h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .not-found-box p {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1100px) {
            .article-layout {
                grid-template-columns: 1fr;
            }

            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }

            .article-sidebar .sidebar-card {
                flex: 1 1 260px;
            }

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

        @media (max-width: 992px) {
            .navbar-custom .nav-container {
                flex-wrap: wrap;
                padding: 12px 0;
            }

            .navbar-toggler-custom {
                display: flex;
            }

            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 4px;
                padding: 12px 0 0;
                order: 10;
            }

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

            .nav-links a {
                width: 100%;
                justify-content: flex-start;
                padding: 12px 16px;
            }

            .nav-auth {
                margin-left: auto;
            }
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }

            .section-padding-sm {
                padding: 36px 0;
            }

            .article-hero {
                padding-top: 72px;
                padding-bottom: 36px;
            }

            .article-main-content {
                padding: 24px 20px;
                border-radius: var(--radius-md);
            }

            .article-body-section {
                padding: 40px 0 48px;
            }

            .cta-section {
                padding: 40px 24px;
                border-radius: var(--radius-lg);
            }

            .cta-actions {
                flex-direction: column;
                width: 100%;
            }

            .cta-actions .btn-glow,
            .cta-actions .btn-outline-neon {
                width: 100%;
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .sticky-bottom-bar {
                padding: 10px 16px;
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }

            .sticky-bottom-bar .sb-text {
                font-size: 0.85rem;
            }

            .sticky-bottom-bar .btn-glow {
                width: 100%;
                justify-content: center;
            }

            .fab-fixed {
                left: 10px;
                bottom: 72px;
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
            }
        }

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

            .article-hero h1 {
                font-size: 1.5rem;
            }

            .article-hero .article-excerpt {
                font-size: 0.95rem;
            }

            .article-content {
                font-size: 0.95rem;
            }

            .navbar-auth .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }

            .navbar-auth .btn-login {
                padding: 8px 12px;
                font-size: 0.8rem;
            }
        }

/* roulang page: category1 */
:root {
      --bg-primary: #08090F;
      --bg-secondary: #0D111E;
      --bg-tertiary: #111827;
      --accent-blue: #0052FF;
      --accent-cyan: #00F0FF;
      --accent-purple: #7C3AED;
      --text-white: #FFFFFF;
      --text-silver: #CBD5E1;
      --text-muted: #94A3B8;
      --text-dark: #1E293B;
      --glass-bg: rgba(13, 17, 30, 0.68);
      --glass-bg-light: rgba(255, 255, 255, 0.06);
      --glass-border: rgba(255, 255, 255, 0.12);
      --glass-border-hover: rgba(0, 240, 255, 0.45);
      --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.35);
      --glow-blue: 0 0 30px rgba(0, 82, 255, 0.4);
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-xl: 32px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
      --shadow-glow: 0 0 40px rgba(0, 240, 255, 0.15);
      --font-main: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: var(--font-main);
      background: var(--bg-primary);
      color: var(--text-white);
      line-height: 1.6;
      overflow-x: hidden;
      min-height: 100vh;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    a:hover {
      color: var(--accent-cyan);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button,
    input,
    textarea,
    select {
      font-family: var(--font-main);
      font-size: 0.95rem;
    }
    button:focus,
    input:focus,
    textarea:focus,
    select:focus {
      outline: 2px solid var(--accent-cyan);
      outline-offset: 2px;
    }
    .container-custom {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .section-padding {
      padding: 72px 0;
    }
    .section-padding-sm {
      padding: 48px 0;
    }

    /* Buttons */
    .btn-glow {
      background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
      border: none;
      color: #FFFFFF;
      padding: 14px 32px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 1rem;
      letter-spacing: 0.3px;
      transition: var(--transition);
      box-shadow: 0 0 24px rgba(0, 240, 255, 0.3);
      position: relative;
      overflow: hidden;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .btn-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 40px rgba(0, 240, 255, 0.55);
      color: #FFFFFF;
    }
    .btn-glow:active {
      transform: translateY(0) scale(0.97);
      box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
    }
    .btn-outline-neon {
      background: transparent;
      border: 2px solid var(--accent-cyan);
      color: var(--accent-cyan);
      padding: 12px 28px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.95rem;
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }
    .btn-outline-neon:hover {
      background: var(--accent-cyan);
      color: var(--bg-primary);
      box-shadow: 0 0 28px rgba(0, 240, 255, 0.5);
    }
    .btn-text-neon {
      background: transparent;
      border: none;
      color: var(--text-silver);
      padding: 12px 20px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.95rem;
      transition: var(--transition);
    }
    .btn-text-neon:hover {
      color: var(--accent-cyan);
      background: rgba(0, 240, 255, 0.08);
    }
    .btn-sm-custom {
      padding: 10px 22px;
      font-size: 0.85rem;
    }

    /* Badges */
    .badge-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0, 240, 255, 0.12);
      border: 1px solid rgba(0, 240, 255, 0.35);
      color: var(--accent-cyan);
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 0.8rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }
    .badge-hot {
      background: linear-gradient(135deg, #FF4500, #FF6B35);
      border: none;
      color: #FFFFFF;
      padding: 4px 12px;
      border-radius: 50px;
      font-size: 0.7rem;
      font-weight: 800;
      letter-spacing: 1px;
      text-transform: uppercase;
      box-shadow: 0 0 14px rgba(255, 69, 0, 0.5);
      display: inline-block;
    }
    .badge-new {
      background: linear-gradient(135deg, #10B981, #34D399);
      border: none;
      color: #FFFFFF;
      padding: 4px 12px;
      border-radius: 50px;
      font-size: 0.7rem;
      font-weight: 800;
      letter-spacing: 1px;
      text-transform: uppercase;
      box-shadow: 0 0 14px rgba(16, 185, 129, 0.5);
      display: inline-block;
    }
    .text-gradient {
      background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 50%, var(--accent-purple) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .section-label {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--accent-cyan);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: clamp(1.8rem, 4vw, 2.6rem);
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1.05rem;
      line-height: 1.7;
      color: var(--text-muted);
      max-width: 640px;
      margin-bottom: 32px;
    }

    /* Header / Navbar */
    .navbar-custom {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: rgba(8, 9, 15, 0.88);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 0;
      min-height: 72px;
      display: flex;
      align-items: center;
    }
    .navbar-custom .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      flex-wrap: wrap;
      gap: 12px;
    }
    .navbar-brand-custom {
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--text-white);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 8px;
      white-space: nowrap;
    }
    .navbar-brand-custom .brand-icon-wrap {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 0.9rem;
      flex-shrink: 0;
    }
    .navbar-custom .nav-collapse {
      display: flex;
      align-items: center;
      gap: 8px;
      flex: 1;
    }
    .navbar-custom .nav-links {
      display: flex;
      align-items: center;
      gap: 4px;
      flex-wrap: wrap;
    }
    .navbar-custom .nav-links a {
      padding: 8px 16px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.9rem;
      color: var(--text-silver);
      white-space: nowrap;
    }
    .navbar-custom .nav-links a:hover {
      color: var(--accent-cyan);
      background: rgba(0, 240, 255, 0.08);
    }
    .navbar-custom .nav-links a.active {
      color: var(--accent-cyan);
      background: rgba(0, 240, 255, 0.12);
      border: 1px solid rgba(0, 240, 255, 0.3);
    }
    .navbar-custom .nav-actions {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-left: auto;
      flex-shrink: 0;
    }
    .navbar-custom .login-btn {
      color: var(--text-white);
      font-weight: 600;
      padding: 8px 16px;
      border-radius: 50px;
      font-size: 0.9rem;
      white-space: nowrap;
      border: none;
      background: transparent;
    }
    .navbar-custom .login-btn:hover {
      color: var(--accent-cyan);
      background: rgba(0, 240, 255, 0.08);
    }
    .navbar-custom .signup-btn {
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
      border: none;
      color: #fff;
      padding: 10px 22px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 0.85rem;
      white-space: nowrap;
      box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
    }
    .navbar-custom .signup-btn:hover {
      transform: translateY(-1px);
      box-shadow: 0 0 24px rgba(0, 240, 255, 0.5);
      color: #fff;
    }
    .navbar-custom .navbar-toggler {
      border: 1px solid var(--glass-border);
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-white);
      width: 40px;
      height: 40px;
      border-radius: 10px;
      display: none;
      align-items: center;
      justify-content: center;
      padding: 0;
    }
    .navbar-toggler-icon {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    /* Hero */
    .hero-category {
      position: relative;
      min-height: 100vh;
      display: flex;
      align-items: center;
      padding: 140px 0 80px;
      background: linear-gradient(135deg, rgba(8,9,15,0.92) 0%, rgba(13,17,30,0.85) 40%, rgba(8,9,15,0.95) 100%), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
      overflow: hidden;
    }
    .hero-category::after {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse at 20% 30%, rgba(0,82,255,0.25) 0%, transparent 60%), radial-gradient(ellipse at 80% 70%, rgba(0,240,255,0.15) 0%, transparent 50%);
      pointer-events: none;
    }
    .hero-category::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
      background-size: 40px 40px;
      pointer-events: none;
    }
    .hero-category .hero-content {
      position: relative;
      z-index: 2;
    }
    .hero-category .hero-grid {
      display: grid;
      grid-template-columns: 1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }
    .hero-category .hero-title {
      font-size: clamp(2rem, 5vw, 3.4rem);
      font-weight: 900;
      line-height: 1.15;
      letter-spacing: -1px;
      margin-bottom: 20px;
    }
    .hero-category .hero-desc {
      font-size: 1.1rem;
      color: var(--text-silver);
      line-height: 1.7;
      margin-bottom: 28px;
      max-width: 560px;
    }
    .hero-category .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 28px;
    }
    .countdown-bar {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 14px 20px;
      backdrop-filter: blur(10px);
      width: fit-content;
    }
    .countdown-bar .countdown-label {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .countdown-bar .countdown-timer {
      display: flex;
      gap: 8px;
      align-items: center;
    }
    .countdown-bar .cd-unit {
      background: rgba(0, 240, 255, 0.1);
      border: 1px solid rgba(0, 240, 255, 0.3);
      border-radius: 8px;
      padding: 6px 10px;
      text-align: center;
      min-width: 48px;
    }
    .countdown-bar .cd-unit .cd-val {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--accent-cyan);
      line-height: 1.1;
    }
    .countdown-bar .cd-unit .cd-lbl {
      font-size: 0.65rem;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .hero-visual-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-lg);
      padding: 24px;
      backdrop-filter: blur(16px);
      box-shadow: var(--shadow-card);
    }
    .hero-visual-card img {
      border-radius: var(--radius-md);
      width: 100%;
      height: auto;
      object-fit: cover;
      margin-bottom: 16px;
    }
    .hero-visual-card .visual-stats {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .hero-visual-card .visual-stat {
      flex: 1;
      min-width: 80px;
      text-align: center;
      background: rgba(255, 255, 255, 0.04);
      border-radius: var(--radius-sm);
      padding: 12px 8px;
    }
    .hero-visual-card .visual-stat .vs-val {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--accent-cyan);
      display: block;
    }
    .hero-visual-card .visual-stat .vs-lbl {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* App ranking strip */
    .app-rank-section {
      background: var(--bg-secondary);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .app-rank-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .app-rank-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      gap: 16px;
      align-items: center;
      transition: var(--transition);
    }
    .app-rank-card:hover {
      border-color: var(--glass-border-hover);
      box-shadow: 0 0 20px rgba(0, 240, 255, 0.12);
      transform: translateY(-3px);
    }
    .app-rank-card .rank-icon {
      width: 56px;
      height: 56px;
      border-radius: 14px;
      overflow: hidden;
      flex-shrink: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(0, 240, 255, 0.08);
      font-size: 1.2rem;
      color: var(--accent-cyan);
    }
    .app-rank-card .rank-icon img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .app-rank-card .rank-info h3 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .app-rank-card .rank-info p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 6px;
    }
    .app-rank-card .rank-stars {
      color: #FFD700;
      font-size: 0.8rem;
      letter-spacing: 2px;
    }

    /* Feature panels */
    .feature-block {
      background: var(--bg-secondary);
    }
    .feature-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 40px;
    }
    .feature-panel {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .feature-panel:hover {
      border-color: var(--glass-border-hover);
      box-shadow: 0 0 24px rgba(0, 240, 255, 0.1);
      transform: translateY(-4px);
    }
    .feature-panel .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(0, 240, 255, 0.1);
      border: 1px solid rgba(0, 240, 255, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      color: var(--accent-cyan);
    }
    .feature-panel h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .feature-panel p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 0;
      line-height: 1.65;
    }

    /* Scenario split */
    .scenario-block {
      background: var(--bg-primary);
    }
    .scenario-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .scenario-split .scenario-img {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: var(--shadow-card);
    }
    .scenario-split .scenario-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .scenario-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .scenario-list li {
      display: flex;
      gap: 14px;
      align-items: flex-start;
      font-size: 0.95rem;
      color: var(--text-silver);
    }
    .scenario-list li .sc-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: rgba(0, 240, 255, 0.1);
      border: 1px solid rgba(0, 240, 255, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      color: var(--accent-cyan);
      font-size: 0.85rem;
    }

    /* Social proof */
    .social-proof-block {
      background: var(--bg-secondary);
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .proof-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-bottom: 40px;
    }
    .proof-stat {
      text-align: left;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.07);
      border-radius: var(--radius-md);
      padding: 20px;
    }
    .proof-stat .ps-val {
      font-size: 2rem;
      font-weight: 900;
      color: var(--accent-cyan);
      line-height: 1.1;
      display: block;
      margin-bottom: 6px;
    }
    .proof-stat .ps-lbl {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .testimonial-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.07);
      border-radius: var(--radius-md);
      padding: 20px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .testimonial-card blockquote {
      font-size: 0.9rem;
      color: var(--text-silver);
      line-height: 1.65;
      margin: 0;
      font-style: italic;
    }
    .testimonial-card .t-author {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .testimonial-card .t-avatar {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      color: #fff;
      font-weight: 700;
      flex-shrink: 0;
    }
    .testimonial-card .t-name {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-white);
    }
    .testimonial-card .t-role {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* FAQ */
    .faq-block {
      background: var(--bg-primary);
    }
    .faq-accordion .accordion-item {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md) !important;
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-accordion .accordion-button {
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-white);
      font-weight: 600;
      font-size: 0.95rem;
      padding: 18px 22px;
      border: none;
      box-shadow: none;
    }
    .faq-accordion .accordion-button:not(.collapsed) {
      background: rgba(0, 240, 255, 0.1);
      color: var(--accent-cyan);
    }
    .faq-accordion .accordion-button::after {
      background-size: 16px;
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23FFFFFF'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    }
    .faq-accordion .accordion-button:not(.collapsed)::after {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2300F0FF'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    }
    .faq-accordion .accordion-body {
      color: var(--text-silver);
      font-size: 0.9rem;
      line-height: 1.65;
      padding: 16px 22px;
      background: rgba(255, 255, 255, 0.02);
    }

    /* CTA section */
    .cta-block {
      background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 64px 0;
    }
    .cta-inner {
      background: linear-gradient(135deg, rgba(0, 82, 255, 0.18) 0%, rgba(0, 240, 255, 0.1) 50%, rgba(124, 58, 237, 0.15) 100%);
      border: 1px solid rgba(0, 240, 255, 0.25);
      border-radius: var(--radius-xl);
      padding: 48px 40px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .cta-inner::before {
      content: '';
      position: absolute;
      top: -50%;
      left: -50%;
      width: 200%;
      height: 200%;
      background: radial-gradient(circle at center, rgba(0, 240, 255, 0.08) 0%, transparent 60%);
      animation: ctaPulse 4s ease-in-out infinite;
      pointer-events: none;
    }
    @keyframes ctaPulse {
      0%, 100% { transform: scale(1); opacity: 0.5; }
      50% { transform: scale(1.2); opacity: 0.8; }
    }
    .cta-inner .section-title {
      position: relative;
      z-index: 1;
    }
    .cta-inner .section-desc {
      position: relative;
      z-index: 1;
      margin-left: auto;
      margin-right: auto;
    }
    .cta-actions {
      position: relative;
      z-index: 1;
      display: flex;
      gap: 14px;
      justify-content: center;
      flex-wrap: wrap;
    }

    /* Footer */
    .footer-custom {
      background: #06070C;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 48px 0 24px;
      position: relative;
      z-index: 10;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 32px;
    }
    .footer-brand {
      max-width: 320px;
    }
    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
    }
    .footer-logo {
      font-weight: 700;
      color: var(--text-white);
    }
    .footer-brand p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 0;
    }
    .footer-col h5 {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 14px;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }
    .footer-col ul {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-col ul li a {
      font-size: 0.85rem;
      color: var(--text-muted);
      transition: var(--transition);
    }
    .footer-col ul li a:hover {
      color: var(--accent-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 20px;
      text-align: center;
    }
    .footer-bottom p {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 0;
    }
    .footer-bottom a {
      color: var(--text-muted);
    }
    .footer-bottom a:hover {
      color: var(--accent-cyan);
    }

    /* FAB */
    .fab-neon {
      position: fixed;
      left: 16px;
      bottom: 96px;
      z-index: 1050;
      width: 52px;
      height: 52px;
      border-radius: 16px;
      background: rgba(8, 9, 15, 0.7);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 2px solid transparent;
      background-clip: padding-box;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-cyan);
      font-size: 1.3rem;
      box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
      opacity: 0.65;
      transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
      animation: fabFloat 3s ease-in-out infinite;
      position: relative;
    }
    .fab-neon::before {
      content: '';
      position: absolute;
      inset: -2px;
      border-radius: 16px;
      background: linear-gradient(135deg, #CCFF00, #00F0FF, #0052FF);
      z-index: -1;
      opacity: 0.7;
      transition: var(--transition);
    }
    .fab-neon:hover {
      opacity: 1;
      color: #FFFFFF;
      transform: scale(1.08);
      box-shadow: 0 0 28px rgba(0, 240, 255, 0.7);
    }
    .fab-neon:active {
      transform: scale(0.95);
    }
    .fab-neon .fab-notify {
      position: absolute;
      top: -4px;
      right: -4px;
      width: 14px;
      height: 14px;
      background: #FF007F;
      border: 2px solid var(--bg-primary);
      border-radius: 50%;
      animation: notifyBlink 1.5s ease-in-out infinite;
    }
    @keyframes fabFloat {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-6px); }
    }
    @keyframes notifyBlink {
      0%, 100% { opacity: 1; box-shadow: 0 0 6px rgba(255, 0, 127, 0.8); }
      50% { opacity: 0.4; box-shadow: 0 0 2px rgba(255, 0, 127, 0.3); }
    }

    /* Bottom conversion bar */
    .bottom-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 1040;
      background: rgba(8, 9, 15, 0.9);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-top: 1px solid rgba(0, 240, 255, 0.25);
      padding: 10px 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .bottom-bar .bb-text {
      font-size: 0.9rem;
      color: var(--text-silver);
      font-weight: 600;
      white-space: nowrap;
    }
    .bottom-bar .bb-text strong {
      color: var(--accent-cyan);
    }
    .bottom-bar .bb-btn {
      background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
      border: none;
      color: #fff;
      padding: 10px 24px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 0.85rem;
      white-space: nowrap;
      box-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
      transition: var(--transition);
    }
    .bottom-bar .bb-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 24px rgba(0, 240, 255, 0.6);
      color: #fff;
    }
    body.has-bottom-bar {
      padding-bottom: 64px;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-category .hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .app-rank-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .feature-grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .proof-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .navbar-custom .nav-collapse {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        padding: 12px 0;
        gap: 8px;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(8, 9, 15, 0.97);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
      }
      .navbar-custom .nav-collapse.open {
        display: flex;
      }
      .navbar-custom .nav-links {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        gap: 2px;
        padding: 8px 16px;
      }
      .navbar-custom .nav-links a {
        width: 100%;
        padding: 10px 16px;
      }
      .navbar-custom .navbar-toggler {
        display: flex;
      }
      .navbar-custom .nav-actions {
        gap: 6px;
      }
      .navbar-custom .login-btn {
        padding: 8px 10px;
        font-size: 0.8rem;
      }
      .navbar-custom .signup-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
      }
      .hero-category {
        padding: 120px 0 60px;
        min-height: auto;
      }
      .hero-category .hero-title {
        font-size: 1.8rem;
      }
      .hero-category .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }
      .hero-category .hero-actions .btn-glow,
      .hero-category .hero-actions .btn-outline-neon {
        width: 100%;
        justify-content: center;
      }
      .scenario-split {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .app-rank-grid {
        grid-template-columns: 1fr;
      }
      .feature-grid-3 {
        grid-template-columns: 1fr;
      }
      .proof-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
      }
      .testimonial-grid {
        grid-template-columns: 1fr;
      }
      .cta-inner {
        padding: 32px 20px;
      }
      .bottom-bar {
        padding: 8px 12px;
        gap: 8px;
      }
      .bottom-bar .bb-text {
        font-size: 0.8rem;
      }
      .bottom-bar .bb-btn {
        padding: 8px 16px;
        font-size: 0.75rem;
      }
      .fab-neon {
        width: 46px;
        height: 46px;
        left: 12px;
        bottom: 80px;
        font-size: 1.1rem;
      }
    }
    @media (max-width: 520px) {
      .container-custom {
        padding: 0 16px;
      }
      .section-padding {
        padding: 48px 0;
      }
      .section-padding-sm {
        padding: 32px 0;
      }
      .hero-category .hero-title {
        font-size: 1.5rem;
      }
      .hero-category .hero-desc {
        font-size: 0.95rem;
      }
      .countdown-bar .cd-unit {
        min-width: 38px;
        padding: 4px 6px;
      }
      .countdown-bar .cd-unit .cd-val {
        font-size: 1rem;
      }
      .countdown-bar .cd-unit .cd-lbl {
        font-size: 0.55rem;
      }
      .proof-stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
      }
      .proof-stat {
        padding: 14px;
      }
      .proof-stat .ps-val {
        font-size: 1.5rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .bottom-bar {
        flex-direction: column;
        gap: 6px;
        padding: 8px 16px;
      }
      .bottom-bar .bb-text {
        font-size: 0.75rem;
        white-space: normal;
        text-align: center;
      }
      .bottom-bar .bb-btn {
        width: 100%;
        text-align: center;
      }
    }

/* roulang page: category2 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-tertiary: #111827;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-purple: #7C3AED;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --text-muted: #94A3B8;
            --text-dark: #1E293B;
            --glass-bg: rgba(13, 17, 30, 0.68);
            --glass-bg-light: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.12);
            --glass-border-hover: rgba(0, 240, 255, 0.45);
            --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.35);
            --glow-blue: 0 0 30px rgba(0, 82, 255, 0.4);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 40px rgba(0, 240, 255, 0.15);
            --font-main: 'Be Vietnam Pro', system-ui, -apple-system, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:hover {
            color: var(--accent-cyan);
        }

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

        button,
        input,
        textarea,
        select {
            font-family: var(--font-main);
            font-size: 0.95rem;
        }

        button:focus,
        input:focus,
        textarea:focus,
        select:focus {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
        }

        .container-custom {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-padding {
            padding: 72px 0;
        }

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

        .btn-glow {
            background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
            border: none;
            color: #FFFFFF;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.3px;
            transition: var(--transition);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.3);
            position: relative;
            overflow: hidden;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            justify-content: center;
        }

        .btn-glow:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.55);
            color: #FFFFFF;
        }

        .btn-glow:active {
            transform: translateY(0) scale(0.97);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
        }

        .btn-outline-neon {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            justify-content: center;
        }

        .btn-outline-neon:hover {
            background: var(--accent-cyan);
            color: var(--bg-primary);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.5);
        }

        .btn-text-neon {
            background: transparent;
            border: none;
            color: var(--text-silver);
            padding: 12px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-text-neon:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid rgba(0, 240, 255, 0.35);
            color: var(--accent-cyan);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .badge-hot {
            background: linear-gradient(135deg, #FF4500, #FF6B35);
            border: none;
            color: #FFFFFF;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 800;
            letter-spacing: 1px;
            text-transform: uppercase;
            box-shadow: 0 0 14px rgba(255, 69, 0, 0.5);
        }

        .badge-new {
            background: linear-gradient(135deg, #10B981, #34D399);
            border: none;
            color: #FFFFFF;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 800;
            letter-spacing: 1px;
            text-transform: uppercase;
            box-shadow: 0 0 14px rgba(16, 185, 129, 0.5);
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 50%, var(--accent-purple) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .section-desc {
            font-size: 1.05rem;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 32px;
        }

        /* Header / Navbar */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 0;
            min-height: 72px;
            display: flex;
            align-items: center;
        }

        .navbar-custom .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            flex-wrap: wrap;
        }

        .navbar-brand-custom {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .navbar-brand-custom .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 1.1rem;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
        }

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

        .nav-links a {
            padding: 10px 18px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.88rem;
            color: var(--text-silver);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-links a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--glass-border-hover);
        }

        .nav-auth {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-auth .btn-login {
            background: transparent;
            border: 1px solid var(--glass-border);
            color: var(--text-silver);
            padding: 10px 22px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.88rem;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-auth .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }

        .nav-auth .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #FFFFFF;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.88rem;
            transition: var(--transition);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
            white-space: nowrap;
        }

        .nav-auth .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.55);
            color: #FFFFFF;
        }

        .nav-toggler {
            display: none;
            background: transparent;
            border: 1px solid var(--glass-border);
            color: var(--text-white);
            padding: 8px 12px;
            border-radius: 8px;
            font-size: 1.2rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .nav-toggler:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        /* Mobile Menu */
        .mobile-menu {
            display: none;
            width: 100%;
            flex-direction: column;
            gap: 6px;
            padding: 16px 0 8px;
            background: transparent;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 8px;
        }

        .mobile-menu.show {
            display: flex;
        }

        .mobile-menu a {
            padding: 12px 16px;
            border-radius: 10px;
            font-weight: 500;
            color: var(--text-silver);
            transition: var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        /* Hero Styles */
        .hero-custom {
            padding: 140px 0 80px;
            background: radial-gradient(ellipse at 20% 20%, rgba(0, 82, 255, 0.18), transparent 60%),
                        radial-gradient(ellipse at 80% 10%, rgba(0, 240, 255, 0.12), transparent 55%),
                        var(--bg-primary);
            position: relative;
            overflow: hidden;
        }

        .hero-custom::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

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

        .hero-badge-row {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.6px;
            margin-bottom: 20px;
            color: #FFFFFF;
        }

        .hero-title .text-gradient {
            display: inline-block;
        }

        .hero-desc {
            font-size: 1.1rem;
            line-height: 1.7;
            color: var(--text-silver);
            max-width: 620px;
            margin-bottom: 32px;
        }

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

        .group-box {
            background: var(--glass-bg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            margin-top: 40px;
            max-width: 560px;
            box-shadow: var(--shadow-card);
        }

        .group-box .group-title {
            font-size: 0.9rem;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .group-box .group-count {
            font-size: 2rem;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .group-box .group-count span {
            color: var(--accent-cyan);
        }

        .group-box .group-progress {
            height: 6px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50px;
            overflow: hidden;
            margin-bottom: 16px;
        }

        .group-box .group-progress-bar {
            height: 100%;
            width: 72%;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 50px;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
        }

        .group-box .group-note {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 18px;
        }

        .group-box .group-btns {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-visual {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-glow);
            border: 1px solid var(--glass-border-hover);
            max-width: 480px;
            width: 100%;
        }

        .hero-stat-row {
            display: flex;
            gap: 28px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            text-align: left;
        }

        .hero-stat-item .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1.2;
        }

        .hero-stat-item .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            letter-spacing: 0.5px;
        }

        /* Feature Cards */
        .feature-card-custom {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .feature-card-custom::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            opacity: 0;
            transition: var(--transition);
        }

        .feature-card-custom:hover {
            border-color: var(--glass-border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }

        .feature-card-custom:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            margin-bottom: 18px;
        }

        .feature-card-custom h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #FFFFFF;
        }

        .feature-card-custom p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin: 0;
        }

        /* Scenario Section */
        .scenario-wrapper {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            border: 1px solid var(--glass-border);
            position: relative;
            overflow: hidden;
        }

        .scenario-wrapper::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08), transparent 70%);
            pointer-events: none;
        }

        .scenario-text h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.4px;
        }

        .scenario-text p {
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .scenario-text ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .scenario-text li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-silver);
            margin-bottom: 12px;
            font-size: 0.95rem;
        }

        .scenario-text li i {
            color: var(--accent-cyan);
            margin-top: 4px;
            flex-shrink: 0;
        }

        .scenario-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-card);
        }

        .scenario-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }

        /* Social Proof */
        .social-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .social-stat-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            transition: var(--transition);
        }

        .social-stat-item:hover {
            border-color: var(--glass-border-hover);
            box-shadow: var(--shadow-glow);
        }

        .social-stat-item .ss-num {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-cyan);
            line-height: 1.2;
        }

        .social-stat-item .ss-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .testimonial-row {
            margin-top: 40px;
        }

        .testimonial-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 24px;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .testimonial-card .quote {
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

        .testimonial-card .author-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-card .avatar {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #FFFFFF;
            flex-shrink: 0;
        }

        .testimonial-card .author-name {
            font-weight: 700;
            font-size: 0.9rem;
            color: #FFFFFF;
        }

        .testimonial-card .author-role {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

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

        .accordion-custom .accordion-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            background: transparent;
            color: #FFFFFF;
            font-weight: 600;
            padding: 18px 20px;
            border: none;
            box-shadow: none;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 2px var(--accent-cyan);
            border-radius: var(--radius-md);
        }

        .accordion-custom .accordion-body {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            padding: 16px 20px 20px;
        }

        /* Sticky Bottom CTA Bar */
        .sticky-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 950;
            background: rgba(8, 9, 15, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid rgba(0, 240, 255, 0.25);
            padding: 12px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transform: translateY(100%);
            transition: transform 0.4s ease;
        }

        .sticky-cta-bar.show {
            transform: translateY(0);
        }

        .sticky-cta-bar .cta-text {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.4;
        }

        .sticky-cta-bar .cta-text strong {
            color: #FFFFFF;
        }

        /* FAB */
        .fab-neon {
            position: fixed;
            left: 20px;
            bottom: 88px;
            z-index: 960;
        }

        .fab-btn {
            width: 52px;
            height: 52px;
            background: rgba(8, 9, 15, 0.68);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            opacity: 0.6;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
        }

        .fab-btn::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 18px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            z-index: -1;
            opacity: 0.7;
            transition: var(--transition);
        }

        .fab-btn:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.6);
            color: #FFFFFF;
        }

        .fab-btn:hover::before {
            opacity: 1;
        }

        .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #08090F;
            animation: blink-badge 1.8s infinite;
        }

        @keyframes blink-badge {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-custom {
                padding: 120px 0 60px;
            }
            .hero-visual img {
                max-width: 380px;
            }
            .social-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-wrapper {
                padding: 36px 24px;
            }
            .scenario-image img {
                height: 260px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-auth {
                margin-left: auto;
                margin-right: 8px;
            }
            .nav-toggler {
                display: block;
            }
            .navbar-custom .nav-container {
                flex-wrap: wrap;
                padding: 12px 0;
            }
            .mobile-menu {
                display: none;
                width: 100%;
            }
            .mobile-menu.show {
                display: flex;
            }
            .hero-custom {
                padding: 110px 0 50px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .group-box {
                padding: 22px 18px;
            }
            .hero-visual {
                margin-top: 32px;
            }
            .hero-stat-row {
                gap: 18px;
            }
            .scenario-wrapper {
                padding: 28px 18px;
            }
            .scenario-image img {
                height: 220px;
            }
            .social-stats {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .social-stat-item .ss-num {
                font-size: 1.5rem;
            }
            .sticky-cta-bar {
                flex-direction: column;
                align-items: stretch;
                text-align: center;
                padding: 12px 16px;
                gap: 10px;
            }
            .sticky-cta-bar .cta-text {
                font-size: 0.85rem;
            }
            .fab-btn {
                width: 46px;
                height: 46px;
                left: 14px;
                bottom: 76px;
                font-size: 1.1rem;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .nav-auth .btn-login,
            .nav-auth .btn-signup {
                padding: 8px 14px;
                font-size: 0.75rem;
            }
            .nav-auth .btn-signup {
                display: inline-block;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .group-box .group-count {
                font-size: 1.5rem;
            }
            .group-box .group-btns {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .social-stats {
                grid-template-columns: 1fr;
            }
            .testimonial-card {
                padding: 18px;
            }
            .sticky-cta-bar {
                padding: 10px 12px;
            }
        }