body {
      min-height: 100vh;
      background: #0d1117;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      color: #e6edf3;
      line-height: 1.7;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      background:
        radial-gradient(ellipse 80% 60% at 20% 10%, rgba(0,150,255,.12) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 90%, rgba(0,230,150,.09) 0%, transparent 55%);
      pointer-events: none;
      z-index: 0;
    }

    /* ── Nav ── */
    .top-nav {
      position: sticky;
      top: 0;
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 32px;
      background: rgba(13,17,23,.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid #21262d;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }
    .nav-logo {
      width: 36px; height: 36px;
      background: linear-gradient(135deg, #0096ff 0%, #00e676 100%);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
    }
    .nav-title {
      font-size: 18px;
      font-weight: 700;
      background: linear-gradient(90deg, #4fc3f7, #00e676);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .nav-links {
      display: flex;
      gap: 24px;
    }
    .nav-links a {
      color: #8b949e;
      text-decoration: none;
      font-size: 14px;
      font-weight: 500;
      transition: color .2s;
    }
    .nav-links a:hover { color: #e6edf3; }

    /* ── Content ── */
    .content-wrap {
      position: relative;
      max-width: 800px;
      margin: 0 auto;
      padding: 48px 24px 80px;
    }
    .page-title {
      font-size: 36px;
      font-weight: 800;
      margin-bottom: 8px;
      background: linear-gradient(90deg, #4fc3f7, #00e676);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .last-updated {
      font-size: 14px;
      color: #8b949e;
      margin-bottom: 40px;
    }

    .section {
      background: #161b22;
      border: 1px solid #30363d;
      border-radius: 12px;
      padding: 28px 32px;
      margin-bottom: 20px;
    }
    .section h2 {
      font-size: 20px;
      font-weight: 700;
      color: #e6edf3;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .section h2 .icon {
      font-size: 22px;
    }
    .section p {
      color: #c9d1d9;
      font-size: 15px;
      margin-bottom: 12px;
    }
    .section ul {
      list-style: none;
      padding: 0;
      margin: 0 0 12px 0;
    }
    .section ul li {
      padding: 6px 0 6px 24px;
      position: relative;
      color: #c9d1d9;
      font-size: 15px;
    }
    .section ul li::before {
      content: "";
      position: absolute;
      left: 8px;
      top: 14px;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #00e676;
    }
    .section a {
      color: #00e676;
      text-decoration: none;
    }
    .section a:hover {
      text-decoration: underline;
    }

    /* ── Footer ── */
    .footer {
      text-align: center;
      padding: 32px 24px;
      color: #484f58;
      font-size: 13px;
      border-top: 1px solid #21262d;
    }

    @media (max-width: 600px) {
      .top-nav { padding: 12px 16px; }
      .nav-links { gap: 16px; }
      .content-wrap { padding: 32px 16px 60px; }
      .page-title { font-size: 28px; }
      .section { padding: 20px 20px; }
    }