/* roulang page: index */
:root {
      --bg-dark-1: #0B111E;
      --bg-dark-2: #10192C;
      --bg-card: rgba(255, 255, 255, 0.04);
      --bg-card-hover: rgba(255, 255, 255, 0.07);
      --primary-blue: #0066FF;
      --accent-cyan: #00F2FE;
      --accent-orange: #FF5E3A;
      --text-main: #F8FAFC;
      --text-sub: #94A3B8;
      --text-muted: #64748B;
      --border-glass: rgba(255, 255, 255, 0.1);
      --border-glow: rgba(0, 242, 254, 0.35);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-pill: 50px;
      --glow-shadow: 0 0 24px rgba(0, 102, 255, 0.35);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      background-color: var(--bg-dark-1);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
    }
    a { text-decoration: none; color: inherit; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }
    .site-topbar {
      background: rgba(11, 17, 30, 0.95);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 0.85rem;
      color: var(--text-sub);
      padding: 6px 0;
    }
    .site-nav {
      background: rgba(16, 25, 44, 0.85);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-glass);
      position: sticky;
      top: 0;
      z-index: 1020;
      padding: 12px 0;
    }
    .brand-logo {
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      background: linear-gradient(135deg, #FFF 0%, var(--accent-cyan) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .nav-link-custom {
      color: var(--text-sub);
      font-weight: 500;
      padding: 8px 14px !important;
      border-radius: var(--radius-sm);
    }
    .nav-link-custom:hover, .nav-link-custom.active {
      color: var(--accent-cyan);
      background: rgba(255, 255, 255, 0.05);
    }
    .btn-glow {
      background: linear-gradient(135deg, var(--primary-blue) 0%, #0099FF 100%);
      color: #FFF;
      font-weight: 600;
      border-radius: var(--radius-pill);
      padding: 10px 24px;
      border: 1px solid rgba(255, 255, 255, 0.2);
      box-shadow: var(--glow-shadow);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      transition: all 0.3s ease;
      cursor: pointer;
    }
    .btn-glow:hover {
      color: #FFF;
      transform: translateY(-2px);
      box-shadow: 0 0 30px rgba(0, 242, 254, 0.5);
      border-color: var(--accent-cyan);
    }
    .btn-outline-glow {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-glass);
      color: var(--text-main);
      border-radius: var(--radius-pill);
      padding: 10px 24px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: all 0.25s ease;
    }
    .btn-outline-glow:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--accent-cyan);
      color: #FFF;
    }
    .glass-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glass);
      backdrop-filter: blur(16px);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s ease;
      height: 100%;
      position: relative;
      overflow: hidden;
    }
    .glass-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-glow);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
    }
    .section-wrap {
      padding: 85px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-dark-2);
    }
    .section-head {
      margin-bottom: 50px;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0, 242, 254, 0.1);
      color: var(--accent-cyan);
      border: 1px solid rgba(0, 242, 254, 0.3);
      padding: 4px 14px;
      border-radius: var(--radius-pill);
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 14px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.25;
      color: #FFF;
      margin-bottom: 14px;
    }
    .section-desc {
      color: var(--text-sub);
      font-size: 1rem;
      max-width: 760px;
      margin: 0 auto;
    }
    .hero-banner {
      position: relative;
      padding: 100px 0 80px;
      background: radial-gradient(circle at 80% 20%, rgba(0, 102, 255, 0.2) 0%, rgba(11, 17, 30, 0) 60%),
                  radial-gradient(circle at 20% 80%, rgba(0, 242, 254, 0.1) 0%, rgba(11, 17, 30, 0) 50%);
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background-image: url('/assets/images/cec686961796f640.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.12;
      pointer-events: none;
    }
    .hero-h1 {
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.15;
      margin-bottom: 20px;
      color: #FFF;
    }
    .hero-h1 span {
      background: linear-gradient(135deg, #FFF 10%, var(--accent-cyan) 90%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      color: var(--text-sub);
      font-size: 1.05rem;
      margin-bottom: 30px;
      line-height: 1.7;
    }
    .timer-strip {
      background: linear-gradient(90deg, rgba(0, 102, 255, 0.15) 0%, rgba(0, 242, 254, 0.08) 100%);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      padding: 24px 30px;
      margin-top: 40px;
    }
    .timer-box {
      background: rgba(0, 0, 0, 0.4);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-sm);
      padding: 8px 14px;
      text-align: center;
      min-width: 65px;
    }
    .timer-val {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--accent-cyan);
      display: block;
      line-height: 1;
    }
    .timer-lbl {
      font-size: 0.72rem;
      color: var(--text-muted);
    }
    .wf-step-num {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-blue), var(--accent-cyan));
      color: #FFF;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      margin-bottom: 20px;
      box-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
    }
    .accordion-item-glass {
      background: var(--bg-card);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md) !important;
      margin-bottom: 14px;
      overflow: hidden;
    }
    .accordion-button-glass {
      background: transparent !important;
      color: var(--text-main) !important;
      font-weight: 600;
      padding: 20px 24px;
      box-shadow: none !important;
      border: none;
    }
    .accordion-button-glass:not(.collapsed) {
      color: var(--accent-cyan) !important;
      border-left: 3px solid var(--accent-cyan);
    }
    .accordion-button-glass::after {
      filter: invert(1);
    }
    .accordion-body-glass {
      background: rgba(0, 0, 0, 0.2);
      color: var(--text-sub);
      padding: 10px 24px 22px;
      font-size: 0.95rem;
      line-height: 1.7;
    }
    .site-footer {
      background: #070B14;
      border-top: 1px solid var(--border-glass);
      padding: 70px 0 30px;
      color: var(--text-sub);
    }
    .footer-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 20px;
    }
    .footer-link-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-link-list li {
      margin-bottom: 10px;
    }
    .footer-link-list a:hover {
      color: var(--accent-cyan);
      padding-left: 4px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10B981;
      display: inline-block;
      margin-right: 6px;
      box-shadow: 0 0 8px #10B981;
    }
    @media (max-width: 991px) {
      .hero-h1 { font-size: 2.2rem; }
      .section-wrap { padding: 60px 0; }
    }