/* roulang page: index */
:root {
      --primary: #6366f1;
      --primary-hover: #4f46e5;
      --accent: #06b6d4;
      --bg-dark: #0f172a;
      --bg-card: #1e293b;
      --border-color: rgba(51, 65, 85, 0.6);
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
    }
    html {
      scroll-behavior: smooth;
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }
    body {
      overflow-x: hidden;
    }
    .hero-banner {
      background-image: linear-gradient(180deg, rgba(15, 23, 42, 0.78) 0%, rgba(15, 23, 42, 0.95) 100%), url('/assets/images/d2c6a14ec3d90a39.png');
      background-size: cover;
      background-position: center;
    }
    .glow-border {
      border: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }
    .glow-border:hover {
      border-color: var(--primary);
      box-shadow: 0 0 20px rgba(99, 102, 241, 0.25);
      transform: translateY(-4px);
    }
    .stat-gradient {
      background: linear-gradient(135deg, #6366F1 0%, #06B6D4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
    }
    .channel-nav-link {
      position: relative;
      transition: color 0.2s;
    }
    .channel-nav-link::after {
      content: '';
      position: absolute;
      width: 0;
      height: 2px;
      bottom: -6px;
      left: 0;
      background-color: var(--accent);
      transition: width 0.2s ease-in-out;
    }
    .channel-nav-link:hover::after,
    .channel-nav-link.active::after {
      width: 100%;
    }