.app-header {
      background: #fff;
      border-bottom: 1px solid #e2e8f0;
      box-shadow: 0 8px 20px rgba(15,23,42,0.05);
    }

    .app-logo,
    .rd-brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      color: inherit;
      text-decoration: none;
    }

    .rd-brand-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .rd-brand-icon img {
      width: 46px;
      height: 46px;
      display: block;
      filter: drop-shadow(0 6px 18px rgba(15, 23, 42, 0.12));
    }

    .rd-brand-name {
      font-weight: 700;
      font-size: 19px;
      letter-spacing: -0.03em;
      color: #020617;
    }

    .rd-brand-tagline {
      font-size: 13px;
      color: #6b7280;
      font-weight: 400;
      display: block;
      margin-top: 2px;
    }

    body {
      margin: 0;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      background: #f3f4f6;
      color: #0f172a;
      line-height: 1.6;
    }

    main {
      max-width: 900px;
      margin: 40px auto;
      padding: 0 20px 60px;
    }

    h1 {
      font-size: 32px;
      margin-bottom: 8px;
      letter-spacing: -0.02em;
    }

    h2 {
      font-size: 22px;
      margin: 26px 0 8px;
    }

    p {
      margin: 0 0 10px;
      color: #4b5563;
    }

    ul {
      margin: 0 0 12px 20px;
      padding: 0;
      color: #4b5563;
    }

    li {
      margin-bottom: 4px;
    }

    .badge {
      display: inline-block;
      padding: 4px 10px;
      border-radius: 999px;
      font-size: 12px;
      background: #e0f2fe;
      color: #0369a1;
      font-weight: 600;
      margin-bottom: 10px;
    }

    a {
      color: #2563eb;
      text-decoration: none;
    }

    a:hover {
      text-decoration: underline;
    }