/* roulang page: index */
:root {
      --primary: #0F2B48;
      --primary-light: #1E5BB0;
      --accent: #FF6B35;
      --success: #10B981;
      --bg-main: #F8FAFC;
      --bg-card: #FFFFFF;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --shadow-soft: 0 4px 20px -2px rgba(15, 43, 72, 0.06);
      --shadow-hover: 0 12px 30px -4px rgba(15, 43, 72, 0.12);
      --radius-box: 12px;
    }

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

    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", sans-serif;
      line-height: 1.75;
      letter-spacing: 0.01em;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    h1, h2, h3, h4, h5 {
      letter-spacing: -0.02em;
      line-height: 1.35;
      color: #0F2B48;
      font-weight: 700;
    }

    .glass-nav {
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.85);
    }

    .countdown-circle-svg {
      transform: rotate(-90deg);
    }

    .custom-card {
      background-color: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-box);
      box-shadow: var(--shadow-soft);
      transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .custom-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #CBD5E1;
    }

    .interactive-badge {
      display: inline-flex;
      align-items: center;
      padding: 4px 12px;
      font-size: 0.8125rem;
      font-weight: 600;
      border-radius: 9999px;
      line-height: 1.25;
    }

    .interactive-badge-blue {
      background-color: #EFF6FF;
      color: #1E5BB0;
      border: 1px solid #BFDBFE;
    }

    .interactive-badge-accent {
      background-color: #FFF7ED;
      color: #C2410C;
      border: 1px solid #FED7AA;
    }

    .interactive-badge-green {
      background-color: #ECFDF5;
      color: #047857;
      border: 1px solid #A7F3D0;
    }

    .btn-brand-primary {
      background: linear-gradient(135deg, #1E5BB0 0%, #0F2B48 100%);
      color: #FFFFFF;
      transition: all 0.25s ease;
      box-shadow: 0 4px 14px rgba(30, 91, 176, 0.32);
    }

    .btn-brand-primary:hover {
      background: linear-gradient(135deg, #2563EB 0%, #17385F 100%);
      box-shadow: 0 6px 18px rgba(30, 91, 176, 0.42);
      transform: translateY(-1px);
    }

    .btn-brand-secondary {
      background-color: #FFFFFF;
      border: 1px solid #CBD5E1;
      color: #0F2B48;
      transition: all 0.2s ease;
    }

    .btn-brand-secondary:hover {
      background-color: #F8FAFC;
      border-color: #94A3B8;
      color: #1E5BB0;
    }

    .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      animation: pulse-ring 1.8s infinite;
    }

    @keyframes pulse-ring {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    }

    .dark-flow-mesh {
      background: radial-gradient(circle at 10% 20%, rgba(30, 91, 176, 0.15) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(255, 107, 53, 0.12) 0%, transparent 40%),
                  #0B192C;
    }

    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
    }

    .accordion-item.active .accordion-content {
      max-height: 280px;
    }

    .accordion-item.active .accordion-arrow {
      transform: rotate(180deg);
    }

    .floating-cta-bar {
      transition: transform 0.35s ease, opacity 0.35s ease;
    }