/* roulang page: index */
:root {
      --primary: #00E599;
      --primary-hover: #00c784;
      --accent: #FF5C00;
      --accent-hover: #e05200;
      --bg-dark: #0F172A;
      --bg-darker: #0B0F19;
      --bg-surface-dark: #1E293B;
      --bg-light: #F8FAFC;
      --bg-card: #FFFFFF;
      --text-dark-title: #0F172A;
      --text-dark-body: #334155;
      --text-dark-muted: #64748B;
      --text-light-title: #F8FAFC;
      --text-light-body: #94A3B8;
      --border-color: #E2E8F0;
      --border-dark: #334155;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow-sm: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      --shadow-hover: 0 12px 28px -4px rgba(0, 229, 153, 0.18);
      --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, sans-serif;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-stack);
      color: var(--text-dark-body);
      background-color: var(--bg-light);
      line-height: 1.75;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }
    h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.35; }
    a { text-decoration: none; color: inherit; transition: all 0.25s ease; }
    .btn {
      border-radius: var(--radius-sm);
      font-weight: 600;
      padding: 0.75rem 1.6rem;
      transition: all 0.25s ease;
    }
    .btn-stream-primary {
      background-color: var(--primary);
      color: #07261a;
      border: 1px solid var(--primary);
    }
    .btn-stream-primary:hover {
      background-color: var(--primary-hover);
      color: #051a12;
      box-shadow: 0 0 18px rgba(0, 229, 153, 0.45);
      transform: translateY(-2px);
    }
    .btn-stream-ghost {
      background-color: transparent;
      color: var(--primary);
      border: 1px solid var(--primary);
    }
    .btn-stream-ghost:hover {
      background-color: rgba(0, 229, 153, 0.1);
      color: #00ffaa;
      border-color: #00ffaa;
    }
    .btn-stream-accent {
      background-color: var(--accent);
      color: #ffffff;
      border: 1px solid var(--accent);
    }
    .btn-stream-accent:hover {
      background-color: var(--accent-hover);
      color: #ffffff;
      box-shadow: 0 0 16px rgba(255, 92, 0, 0.4);
    }
    .badge-pill-neon {
      display: inline-block;
      padding: 0.35rem 0.85rem;
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 600;
      background: rgba(0, 229, 153, 0.12);
      color: #009963;
      border: 1px solid rgba(0, 229, 153, 0.3);
    }
    .badge-pill-neon-dark {
      background: rgba(0, 229, 153, 0.15);
      color: var(--primary);
      border: 1px solid rgba(0, 229, 153, 0.4);
    }
    .section-pad { padding: 90px 0; }
    .section-pad-sm { padding: 60px 0; }
    .sec-dark { background-color: var(--bg-dark); color: var(--text-light-body); }
    .sec-darker { background-color: var(--bg-darker); color: var(--text-light-body); }
    .sec-light { background-color: var(--bg-light); color: var(--text-dark-body); }
    .sec-white { background-color: #ffffff; color: var(--text-dark-body); }
    .title-dark { color: var(--text-dark-title); }
    .title-light { color: var(--text-light-title); }
    .card-custom {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
      overflow: hidden;
    }
    .card-custom:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(0, 229, 153, 0.4);
    }
    .card-custom-dark {
      background: var(--bg-surface-dark);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-dark);
      transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
      color: var(--text-light-body);
    }
    .card-custom-dark:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 28px -4px rgba(0, 229, 153, 0.25);
      border-color: var(--primary);
    }
    .pulse-dot {
      display: inline-block;
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background-color: var(--primary);
      box-shadow: 0 0 0 0 rgba(0, 229, 153, 0.7);
      animation: pulse 1.8s infinite;
      vertical-align: middle;
      margin-right: 6px;
    }
    @keyframes pulse {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 229, 153, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(0, 229, 153, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 229, 153, 0); }
    }
    /* Header Styles */
    .top-sub-bar {
      background-color: #0B0F19;
      color: #94A3B8;
      font-size: 0.85rem;
      border-bottom: 1px solid #1E293B;
      padding: 6px 0;
    }
    .main-navbar {
      background: rgba(15, 23, 42, 0.94);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid #334155;
      position: sticky;
      top: 0;
      z-index: 1030;
    }
    .brand-logo-text {
      font-size: 1.45rem;
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .brand-logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, #00E599 0%, #00875A 100%);
      color: #0F172A;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.15rem;
    }
    .nav-link-custom {
      color: #CBD5E1 !important;
      font-weight: 500;
      padding: 0.5rem 0.85rem !important;
      border-radius: 6px;
    }
    .nav-link-custom:hover {
      color: var(--primary) !important;
      background-color: rgba(255, 255, 255, 0.05);
    }
    /* Hero Carousel */
    .hero-carousel-item {
      min-height: 580px;
      background-size: cover;
      background-position: center;
      position: relative;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(11, 15, 25, 0.94) 0%, rgba(15, 23, 42, 0.82) 60%, rgba(15, 23, 42, 0.65) 100%);
    }
    /* Accordion Custom */
    .accordion-custom .accordion-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 10px !important;
      margin-bottom: 12px;
      overflow: hidden;
    }
    .accordion-custom .accordion-button {
      font-weight: 600;
      color: var(--text-dark-title);
      background: #FFFFFF;
      padding: 1.15rem 1.4rem;
      box-shadow: none !important;
    }
    .accordion-custom .accordion-button:not(.collapsed) {
      background-color: #F0FDF4;
      color: #065F46;
      border-bottom: 1px solid #DCFCE7;
    }
    .accordion-custom .accordion-body {
      padding: 1.25rem 1.4rem;
      color: var(--text-dark-body);
      font-size: 0.98rem;
    }
    /* Responsive Adjustments */
    @media (max-width: 991px) {
      .hero-carousel-item { min-height: 520px; }
      .section-pad { padding: 60px 0; }
    }
    @media (max-width: 576px) {
      .brand-logo-text { font-size: 1.25rem; }
      .btn { padding: 0.65rem 1.2rem; }
    }