:root {
      --bg: #0b0f14;
      --panel: #121821;
      --ink: #e7edf5;
      --muted: #a9b4c2;
      --brand: #5da0ff;
      --accent: #77ffc0;
      --danger: #ff6b6b;
      --radius: 16px;
      --shadow: 0 10px 30px rgba(0,0,0,.35);
    }

    /* Base Reset */
    * {
      box-sizing: border-box;
    }

    html,
    body {
      height: 100%;
      margin: 0;
      padding: 0;
    }

    /* Body */
    body {
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
      color: var(--ink);
      background: radial-gradient(1200px 800px at 10% -10%, #000000 0%, transparent 60%), #000000;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    /* Links */
    a {
      color: var(--brand);
      text-decoration: none;
    }

    a:hover {
      text-decoration: underline;
    }

    /* Layout Wrappers */
    .wrap {
      max-width: 980px;
      margin: 0 auto;
      padding: 32px 20px 80px;
    }

    .grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 18px;
    }

    @media (min-width: 860px) {
      .grid {
        grid-template-columns: 1.1fr .9fr;
      }
    }

    /* Header */
    header {
      position: sticky;
      top: 0;
      z-index: 10;
      backdrop-filter: blur(6px);
      background: linear-gradient(to bottom, rgba(11,15,20,.9), rgba(0,0,0,.6));
      border-bottom: 1px solid rgba(255,255,255,.06);
    }

    .nav {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 14px 20px;
      max-width: 980px;
      margin: 0 auto;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      letter-spacing: .2px;
    }

    .brand .logo {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 10px;
      box-shadow: var(--shadow);
    }

    .pill {
      margin-left: auto;
      font-size: 12px;
      padding: 6px 10px;
      border-radius: 999px;
      background: rgba(125,155,255,.12);
      color: #cfe0ff;
      border: 1px solid rgba(125,155,255,.25);
    }

    /* Typography */
    h1 {
      font-size: clamp(26px, 4vw, 42px);
      line-height: 1.15;
      margin: 22px 0 10px;
    }

    h2 {
      font-size: clamp(20px, 3vw, 28px);
      margin: 26px 0 10px;
    }

    h3 {
      font-size: 18px;
      margin: 22px 0 8px;
    }

    p,
    li {
      color: var(--muted);
    }

    /* Cards & Sections */
    .card {
      background: linear-gradient(180deg, rgba(0,0,0,0.03), rgba(0,0,0,0.02));
      border: 1px solid rgba(255,255,255,.08);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding: 24px;
    }

    .section {
      scroll-margin-top: 80px;
    }

    .notice {
      border-left: 4px solid var(--brand);
      padding-left: 14px;
    }

    /* Special Text */
    .kbd {
      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
      font-size: 12px;
      background: rgba(255,255,255,.06);
      padding: 2px 6px;
      border-radius: 6px;
      border: 1px solid rgba(255,255,255,.15);
      color: var(--ink);
    }

    .muted {
      color: var(--muted);
    }

    .mono {
      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
      font-size: 13px;
    }

    /* Chips */
    .chips {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .chip {
      font-size: 12px;
      padding: 6px 10px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.16);
      background: rgba(255,255,255,.05);
    }

    /* Footer */
    footer {
      margin-top: 40px;
      padding-top: 24px;
      border-top: 1px dashed rgba(255,255,255,.15);
      color: var(--muted);
      font-size: 14px;
    }

    /* ===== MOBILE STYLES ===== */
@media (max-width: 600px) {
  .wrap {
    padding: 20px 14px 60px;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
  }

  .brand {
    font-size: 14px;
    gap: 8px;
  }

  .brand .logo {
    width: 28px;
    height: 28px;
    border-radius: 8px;
  }

  .pill {
    margin-left: 0;
    align-self: flex-start;
    font-size: 11px;
    padding: 4px 8px;
  }

  h1 {
    font-size: 24px;
  }

  h2 {
    font-size: 20px;
  }

  h3 {
    font-size: 16px;
  }

  .card {
    padding: 18px;
  }

  .chips {
    gap: 6px;
  }

  .chip {
    font-size: 11px;
    padding: 5px 8px;
  }

  footer {
    font-size: 12px;
    padding-top: 18px;
  }
}