/* roulang page: index */
:root {
      --bg-dark: #0A0E1A;
      --card-dark: #111827;
      --card-border: rgba(255, 255, 255, 0.08);
      --primary-gradient: linear-gradient(135deg, #0284C7 0%, #06B6D4 100%);
      --accent-gradient: linear-gradient(135deg, #7C3AED 0%, #0284C7 100%);
    }
    html {
      scroll-behavior: smooth;
      scroll-padding-top: 96px;
    }
    body {
      background-color: var(--bg-dark);
      color: #F8FAFC;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
      margin: 0;
      line-height: 1.6;
    }
    .gradient-text {
      background: linear-gradient(135deg, #38BDF8 0%, #06B6D4 50%, #A855F7 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .glass-nav {
      background: rgba(10, 14, 26, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .badge-pill {
      display: inline-flex;
      align-items: center;
      padding: 0.25rem 0.875rem;
      border-radius: 9999px;
      font-size: 0.8125rem;
      font-weight: 500;
      border: 1px solid rgba(6, 182, 212, 0.3);
      background: rgba(6, 182, 212, 0.1);
      color: #38BDF8;
    }
    .custom-card {
      background: #111827;
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 1.25rem;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-card:hover {
      border-color: rgba(6, 182, 212, 0.4);
      transform: translateY(-4px);
      box-shadow: 0 20px 35px -10px rgba(0, 0, 0, 0.5), 0 0 20px -5px rgba(6, 182, 212, 0.2);
    }
    .accordion-item[open] summary svg {
      transform: rotate(180deg);
    }
    input:focus, textarea:focus, select:focus {
      outline: none;
      box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.5);
      border-color: #06B6D4;
    }
    .timeline-line::before {
      content: '';
      position: absolute;
      left: 1.25rem;
      top: 0;
      bottom: 0;
      width: 2px;
      background: linear-gradient(to bottom, #0284C7, #06B6D4, rgba(6, 182, 212, 0.1));
    }
    @media (min-width: 768px) {
      .timeline-line::before {
        left: 50%;
        transform: translateX(-50%);
      }
    }