:root {
  --bg: #0b1020;
  --card: rgba(255,255,255,0.08);
  --text: #eef2ff;
  --muted: #bfd0ff;
  --accent: #7dd3fc;
  --accent-2: #f9a8d4;
  --line: rgba(255,255,255,0.14);
  --code-bg: #111827;
  --shadow: 0 16px 40px rgba(0,0,0,0.28);
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(125,211,252,0.15), transparent 30%),
    radial-gradient(circle at top right, rgba(249,168,212,0.15), transparent 28%),
    linear-gradient(180deg, #0b1020, #121933 46%, #0d1328);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { width: min(100% - 2rem, var(--max)); margin: 0 auto; }
.skip-link { position:absolute; left:-9999px; }
.skip-link:focus { left:1rem; top:1rem; z-index:999; background:#fff; color:#111; padding:.75rem 1rem; border-radius:.75rem; }
.site-header {
  position: sticky; top: 0; z-index: 20; backdrop-filter: blur(12px);
  background: rgba(11,16,32,0.72); border-bottom: 1px solid var(--line);
}
.topbar { display:flex; gap:1rem; align-items:center; justify-content:space-between; padding: 1rem 0; }
.brand { display:flex; align-items:center; gap: .8rem; font-weight: 800; letter-spacing:.02em; color: var(--text); }
.brand-badge { display:grid; place-items:center; width:2.5rem; height:2.5rem; border-radius:0.9rem; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color:#111827; box-shadow: var(--shadow); }
.menu-toggle { display:none; background:transparent; color:var(--text); border:1px solid var(--line); border-radius:.8rem; padding:.7rem .9rem; }
.layout { display:grid; grid-template-columns: 280px 1fr; gap: 1.25rem; padding: 1.25rem 0 3rem; }
.sidebar { position: sticky; top: 5.7rem; align-self:start; background: var(--card); border:1px solid var(--line); border-radius: 1.4rem; padding: 1rem; box-shadow: var(--shadow); }
.sidebar h2 { margin: .25rem 0 1rem; font-size: 1rem; color: var(--muted); }
.sidebar nav { display:grid; gap:.35rem; }
.sidebar a { color: var(--text); padding: .7rem .85rem; border-radius: .9rem; border:1px solid transparent; }
.sidebar a:hover, .sidebar a.active { background: rgba(125,211,252,0.12); border-color: rgba(125,211,252,0.24); text-decoration:none; }
.content { min-width:0; }
.hero, .card, .article { background: var(--card); border:1px solid var(--line); border-radius:1.5rem; box-shadow: var(--shadow); }
.hero { padding: 2rem; overflow: hidden; position:relative; }
.hero::after { content:''; position:absolute; inset:auto -3rem -3rem auto; width:12rem; height:12rem; border-radius:50%; background: radial-gradient(circle, rgba(125,211,252,.24), transparent 62%); }
.hero p { color: var(--muted); max-width: 70ch; }
.pill-row { display:flex; flex-wrap:wrap; gap:.6rem; margin-top:1rem; }
.pill { padding:.45rem .7rem; border-radius:999px; background:rgba(255,255,255,.08); border:1px solid var(--line); color:var(--muted); }
.grid-2 { display:grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1rem; }
.card { padding: 1.2rem; }
.card h3 { margin-top:0; }
.article { padding: 1.5rem; }
.article + .article { margin-top: 1rem; }
.article .lead { color: var(--muted); font-size: 1.06rem; }
.note, .tip, .warning { padding: 1rem 1rem 1rem 1.1rem; border-radius:1rem; margin:1rem 0; border:1px solid var(--line); }
.note { background: rgba(125,211,252,0.1); }
.tip { background: rgba(134,239,172,0.1); }
.warning { background: rgba(249,168,212,0.12); }
.list-check { padding-left: 1.25rem; }
.list-check li { margin: .45rem 0; }
.code-block { background: var(--code-bg); border:1px solid #243248; border-radius: 1.2rem; overflow:hidden; margin:1rem 0; }
.code-head { display:flex; align-items:center; justify-content:space-between; gap:1rem; padding:.8rem 1rem; border-bottom:1px solid #243248; background:#0b1220; }
.code-head strong { font-size:.95rem; }
.copy-btn { border:1px solid #334155; background:#111827; color:#e5e7eb; padding:.5rem .8rem; border-radius:.8rem; cursor:pointer; }
.copy-btn:hover { border-color:#7dd3fc; }
pre { margin:0; padding: 1rem 1.1rem 1.2rem; overflow:auto; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .95rem; }
.inline-code { background: rgba(255,255,255,.08); padding:.15rem .45rem; border-radius:.5rem; border:1px solid var(--line); }
.table-wrap { overflow:auto; }
table { width:100%; border-collapse: collapse; }
th, td { text-align:left; padding:.8rem; border-bottom:1px solid var(--line); vertical-align:top; }
.site-footer { padding: 1.5rem 0 3rem; color: var(--muted); }
.cta-links { display:flex; flex-wrap:wrap; gap:.8rem; }
.button-link { display:inline-flex; align-items:center; justify-content:center; padding:.75rem 1rem; border-radius: .95rem; color:#0f172a; background: linear-gradient(135deg, var(--accent), #dbeafe); font-weight:700; }
.button-link.secondary { background: rgba(255,255,255,.08); color: var(--text); border:1px solid var(--line); }
.breadcrumbs { color: var(--muted); font-size:.95rem; margin-bottom: .75rem; }
.mini-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:1rem; }
.code-block .hll { background-color: #1f2937; }
.code-block .c { color: #94a3b8; }
.code-block .nt, .code-block .k, .code-block .kd { color: #7dd3fc; }
.code-block .na { color: #f9a8d4; }
.code-block .s, .code-block .s2, .code-block .dl { color: #86efac; }
.code-block .nx, .code-block .nf { color: #fcd34d; }
.code-block .o, .code-block .p { color: #e5e7eb; }
.code-block .mi, .code-block .mf { color: #c4b5fd; }
@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: static; display:none; }
  .sidebar.open { display:block; }
  .menu-toggle { display:inline-flex; }
  .grid-2, .mini-grid { grid-template-columns: 1fr; }
}