/* roulang page: index */
:root {
      --bg-primary: #0D1117;
      --bg-surface: #161B22;
      --accent-color: #F59E0B;
      --accent-hover: #D97706;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --text-main: #FFFFFF;
      --text-muted: #8B949E;
    }
    html {
      box-sizing: border-box;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    *, *:before, *:after {
      box-sizing: inherit;
    }
    body {
      background-color: #0D1117;
      color: #F3F4F6;
      font-feature-settings: "cv02", "cv03", "cv04", "cv11";
    }
    .custom-container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    .panel-card {
      background: #161B22;
      border: 1px solid rgba(255, 255, 255, 0.07);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .panel-card:hover {
      border-color: rgba(245, 158, 11, 0.45);
      transform: translateY(-3px);
      box-shadow: 0 12px 30px -10px rgba(0, 0, 0, 0.5);
    }
    .subtle-grid {
      background-size: 32px 32px;
      background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    }
    .accordion-content {
      transition: max-height 0.35s ease, opacity 0.3s ease;
    }