/* roulang page: index */
:root {
      --bs-body-bg: #0B0F12;
      --bs-body-color: #CFD8DC;
      --bs-primary: #00FF66;
      --bs-primary-rgb: 0, 255, 102;
      --bs-border-radius: 4px;
      --bg-dark-card: #141A1F;
      --bg-darker: #06080A;
      --border-dark: #222D36;
      --text-white: #FFFFFF;
      --text-muted: #8E9CAE;
      --accent-red: #FF4D4D;
      --font-mono-din: "DIN Alternate", "Bebas Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    }
    * {
      box-sizing: border-box;
      letter-spacing: -0.2px;
    }
    body {
      background-color: var(--bs-body-bg);
      color: var(--bs-body-color);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
      line-height: 1.65;
    }
    a {
      text-decoration: none;
      transition: all 0.25s ease-in-out;
    }
    .text-neon {
      color: var(--bs-primary) !important;
    }
    .text-battle {
      color: var(--accent-red) !important;
    }
    .bg-dark-card {
      background-color: var(--bg-dark-card);
    }
    .border-dark-custom {
      border: 1px solid var(--border-dark);
    }
    .din-font {
      font-family: var(--font-mono-din);
      letter-spacing: 0.5px;
    }
    .btn-neon {
      background-color: var(--bs-primary);
      color: #000000;
      font-weight: 700;
      border: 1px solid var(--bs-primary);
      border-radius: 4px;
      padding: 0.65rem 1.6rem;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    }
    .btn-neon:hover {
      background-color: #1aff75;
      color: #000000;
      box-shadow: 0 0 25px rgba(0, 255, 102, 0.45);
      transform: translateY(-2px);
    }
    .btn-outline-neon {
      background-color: transparent;
      color: #FFFFFF;
      font-weight: 600;
      border: 1px solid #334454;
      border-radius: 4px;
      padding: 0.65rem 1.5rem;
      transition: all 0.3s ease;
    }
    .btn-outline-neon:hover {
      color: var(--bs-primary);
      border-color: var(--bs-primary);
      background-color: rgba(0, 255, 102, 0.05);
    }
    .app-shell-sidebar {
      position: fixed;
      top: 0;
      left: 0;
      width: 260px;
      height: 100vh;
      background-color: #080C0E;
      border-right: 1px solid var(--border-dark);
      z-index: 1040;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 1.5rem 1rem;
    }
    .brand-box {
      padding: 0.5rem 0.75rem 1.25rem;
      border-bottom: 1px solid var(--border-dark);
    }
    .brand-title {
      font-size: 1.2rem;
      font-weight: 800;
      color: #FFFFFF;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .nav-shell-link {
      display: flex;
      align-items: center;
      gap: 0.8rem;
      padding: 0.75rem 0.9rem;
      color: var(--text-muted);
      font-size: 0.92rem;
      border-radius: 4px;
      margin-bottom: 0.25rem;
      transition: all 0.2s ease;
    }
    .nav-shell-link:hover, .nav-shell-link.active {
      color: #FFFFFF;
      background-color: #141D24;
      border-left: 3px solid var(--bs-primary);
    }
    .nav-shell-link i {
      font-size: 1.1rem;
    }
    .main-app-content {
      margin-left: 260px;
      min-height: 100vh;
    }
    .mobile-header-bar {
      display: none;
      position: sticky;
      top: 0;
      left: 0;
      width: 100%;
      background: #080C0E;
      border-bottom: 1px solid var(--border-dark);
      z-index: 1030;
      padding: 0.85rem 1.25rem;
    }
    .site-section {
      padding: 5.5rem 0;
      position: relative;
    }
    .section-tag {
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--bs-primary);
      margin-bottom: 0.5rem;
      display: inline-block;
    }
    .section-heading {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-white);
      margin-bottom: 1rem;
      line-height: 1.25;
    }
    .section-lead {
      color: var(--text-muted);
      font-size: 1rem;
      max-width: 820px;
      line-height: 1.7;
    }
    .hero-stage {
      padding: 4rem 0 6rem;
      background: radial-gradient(circle at 80% 20%, rgba(0, 255, 102, 0.08) 0%, rgba(11, 15, 18, 0) 65%),
                  linear-gradient(180deg, #090D10 0%, #0B0F12 100%);
      border-bottom: 1px solid var(--border-dark);
    }
    .live-signal-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: rgba(255, 77, 77, 0.12);
      border: 1px solid rgba(255, 77, 77, 0.35);
      color: #FF7070;
      font-size: 0.78rem;
      font-weight: 700;
      padding: 0.3rem 0.75rem;
      border-radius: 20px;
      margin-bottom: 1.5rem;
    }
    .signal-dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--accent-red);
      box-shadow: 0 0 8px var(--accent-red);
      animation: pulse-dot 1.4s infinite;
    }
    @keyframes pulse-dot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.3; transform: scale(0.8); }
    }
    .hero-h1 {
      font-size: 3rem;
      font-weight: 900;
      color: var(--text-white);
      line-height: 1.15;
      margin-bottom: 1.5rem;
      letter-spacing: -1px;
    }
    .coupon-ticket-main {
      background: linear-gradient(135deg, #162028 0%, #11171C 100%);
      border: 1px dashed #00FF66;
      border-radius: 8px;
      padding: 2.25rem 2rem;
      position: relative;
      box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
    }
    .coupon-ticket-main::before, .coupon-ticket-main::after {
      content: "";
      position: absolute;
      width: 22px;
      height: 22px;
      background: #0B0F12;
      border-radius: 50%;
      top: 50%;
      transform: translateY(-50%);
    }
    .coupon-ticket-main::before { left: -12px; border-right: 1px solid #00FF66; }
    .coupon-ticket-main::after { right: -12px; border-left: 1px solid #00FF66; }
    .tech-card {
      background-color: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: 4px;
      padding: 1.75rem;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      height: 100%;
    }
    .tech-card:hover {
      border-color: var(--bs-primary);
      box-shadow: 0 10px 30px rgba(0, 255, 102, 0.08);
      transform: translateY(-3px);
    }
    .card-icon-wrap {
      width: 48px;
      height: 48px;
      border-radius: 4px;
      background-color: rgba(0, 255, 102, 0.08);
      color: var(--bs-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 1.25rem;
    }
    .stat-number {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--bs-primary);
      line-height: 1;
    }
    .story-hero-img, .stream-showcase-img {
      width: 100%;
      height: 280px;
      object-fit: cover;
      border-radius: 4px;
      border: 1px solid var(--border-dark);
    }
    .quote-box {
      border-left: 2px solid var(--bs-primary);
      padding-left: 1.25rem;
    }
    .accordion-button {
      background-color: var(--bg-dark-card);
      color: var(--text-white);
      font-weight: 600;
      border: 1px solid var(--border-dark);
      box-shadow: none !important;
    }
    .accordion-button:not(.collapsed) {
      background-color: #192229;
      color: var(--bs-primary);
      border-color: var(--bs-primary);
    }
    .accordion-button::after {
      filter: invert(1);
    }
    .accordion-body {
      background-color: #0E1317;
      border: 1px solid var(--border-dark);
      border-top: none;
      color: var(--bs-body-color);
    }
    .footer-site {
      background-color: #050709;
      border-top: 1px solid var(--border-dark);
      padding: 4rem 0 2rem;
      color: var(--text-muted);
    }
    @media (max-width: 991.98px) {
      .app-shell-sidebar { display: none; }
      .main-app-content { margin-left: 0; }
      .mobile-header-bar { display: flex; align-items: center; justify-content: space-between; }
      .hero-h1 { font-size: 2.2rem; }
      .site-section { padding: 3.5rem 0; }
    }