:root {
      --bg: #0b1020;
      --card: #0f172a;
      --text: #e5e7eb;
      --muted: #9ca3af;
      --accent: #60a5fa;
      --accent-contrast: #0b1020;
      --ring: rgba(96, 165, 250, .4);
  }

  * {
      box-sizing: border-box;
  }

  html,
  body {
      height: 100%;
  }

  body {
      margin: 0;
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Inter, sans-serif;
      background: radial-gradient(1200px 600px at 10% 10%, #111836 0%, var(--bg) 60%) fixed;
      color: var(--text);
      line-height: 1.55;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
  }

  .wrap {
      max-width: 900px;
      margin: 0 auto;
      padding: 40px 20px 64px;
  }

  header {
      display: grid;
      gap: 14px;
      margin-bottom: 28px;
  }

  h1 {
      font-size: clamp(28px, 5vw, 44px);
      margin: 0;
      letter-spacing: -0.02em;
  }

  p.lead {
      color: var(--muted);
      font-size: clamp(16px, 2.6vw, 18px);
      margin: 0;
  }

  .card {
      background: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .02));
      border: 1px solid rgba(255, 255, 255, .08);
      border-radius: 18px;
      padding: 22px;
      box-shadow: 0 10px 30px rgba(5, 10, 20, .35);
      backdrop-filter: blur(6px);
  }

  .banner {
      position: relative;
      overflow: hidden;
      background: linear-gradient(135deg, rgba(14, 165, 233, .18), rgba(99, 102, 241, .18));
      border-color: rgba(255, 255, 255, .14);
  }

  .banner::before {
      content: "";
      position: absolute;
      inset: -2px;
      pointer-events: none;
      background:
          radial-gradient(700px 260px at 10% 0%, rgba(96, 165, 250, .35), transparent 60%),
          radial-gradient(700px 260px at 90% 100%, rgba(99, 102, 241, .35), transparent 60%);
      z-index: 0;
      filter: blur(0.3px);
  }

  .banner>* {
      position: relative;
      z-index: 1;
  }

  .features {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 14px;
      margin-top: 6px;
  }

  .feat {
      background: rgba(255, 255, 255, .03);
      border-radius: 14px;
      padding: 14px;
      border: 1px solid rgba(255, 255, 255, .06);
  }

  .feat strong {
      display: block;
      margin-bottom: 6px;
  }

  .actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 22px;
  }

  .btn {
      appearance: none;
      border: 1px solid rgba(255, 255, 255, .08);
      cursor: pointer;
      text-decoration: none;
      padding: 12px 16px;
      border-radius: 12px;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 10px;
  }

  .btn.primary {
      background: var(--accent);
      color: var(--accent-contrast);
      box-shadow: 0 8px 20px var(--ring);
      border-color: transparent;
  }

  .btn.secondary {
      background: rgba(255, 255, 255, .05);
      color: var(--text);
  }

  .btn svg {
      width: 20px;
      height: 20px;
  }

  .note {
      font-size: 14px;
      color: var(--muted);
      margin-top: 12px;
  }

  footer {
      margin-top: 40px;
      font-size: 14px;
      color: var(--muted);
  }

  code {
      background: rgba(255, 255, 255, .06);
      padding: 2px 6px;
      border-radius: 6px;
  }

  details {
      margin-top: 18px;
  }

  summary {
      cursor: pointer;
  }

  pre {
      background: #0a0f1f;
      color: #d1d5db;
      padding: 14px;
      border-radius: 12px;
      overflow: auto;
      border: 1px solid rgba(255, 255, 255, .06);
  }