:root {
  --a: #ea580c;
  --b: #14b8a6;
  --accent: #818cf8;
  --radius: 12px;
  --font-ui: system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --ink: #f4f4f5;
}
[data-theme="light"] {
  color-scheme: light;
  --desk: #f4f4f5;
  --chrome: #ffffff;
  --ink: #18181b;
  --muted: #52525b;
  --line: #e4e4e7;
  --code-bg: #18181b;
  --code-ink: #e4e4e7;
  --code-line: #3f3f46;
  --chip: #e4e4e7;
  --ok: #16a34a;
  --ok-bg: #dcfce7;
  --warn: #c2410c;
  --warn-bg: #ffedd5;
  --focus: #6366f1;
  --hero-sub: #52525b;
  --a: #c2410c;
  --b: #0f766e;
  --track: #d4d4d8;
  --thumb: #52525b;
}
[data-theme="dark"] {
  color-scheme: dark;
  --desk: #09090b;
  --chrome: #18181b;
  --ink: #f4f4f5;
  --muted: #a1a1aa;
  --line: rgba(255,255,255,0.16);
  --code-bg: #27272a;
  --code-ink: #f4f4f5;
  --code-line: #52525b;
  --chip: #27272a;
  --ok: #4ade80;
  --ok-bg: rgba(34, 197, 94, 0.12);
  --warn: #fdba74;
  --warn-bg: rgba(234, 88, 12, 0.16);
  --focus: #818cf8;
  --hero-sub: #a1a1aa;
  --track: #3f3f46;
  --thumb: #d4d4d8;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--desk);
  color: var(--ink);
  font: 16px/1.55 var(--font-ui);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--font-mono); font-size: 0.86em; }
:not(pre) > code {
  background: var(--chip);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 0.12em 0.42em;
  border-radius: 6px;
  font-size: 0.84em;
}
.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 28px;
  background: color-mix(in srgb, var(--desk) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand {
  color: inherit;
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
}
.brand em { font-style: normal; color: var(--accent); }
.brand:hover { text-decoration: none; }
.nav-sep { color: var(--muted); }
.nav .push { margin-left: auto; }
.link-btn, .theme-btn {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 5px 10px;
  color: var(--accent);
  border-color: rgba(129, 140, 248, 0.45);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.theme-btn { color: var(--ink); border-color: var(--line); }
.link-btn:hover, .theme-btn:hover { border-color: var(--ink); text-decoration: none; }
.link-btn:focus-visible, .theme-btn:focus-visible, .side a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
.shell {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 8px 40px;
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 28px 0 80px;
}
.side {
  position: sticky;
  top: 64px;
  align-self: start;
  padding: 8px 0 24px;
}
.side p {
  margin: 0 0 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.side a {
  display: block;
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 8px;
  text-decoration: none;
}
.side a:hover { background: var(--chrome); text-decoration: none; }
.side a.here {
  background: var(--chrome);
  box-shadow: inset 3px 0 0 var(--accent);
  color: var(--accent);
}
.article { min-width: 0; max-width: 760px; }
.kicker {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}
h1 {
  margin: 0 0 12px;
  font-size: 36px;
  line-height: 1.15;
  letter-spacing: -0.03em;
}
h1 em { font-style: normal; color: var(--accent); }
.lede {
  margin: 0 0 28px;
  color: var(--hero-sub);
  font-size: 17px;
  line-height: 1.5;
}
h2 {
  margin: 36px 0 10px;
  font-size: 22px;
  letter-spacing: -0.02em;
}
h3 { margin: 24px 0 8px; font-size: 16px; }
p, li { color: var(--ink); }
.muted { color: var(--muted); }
.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 20px 0 8px;
}
.card {
  display: block;
  background: var(--chrome);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 16px 14px;
  color: inherit;
  text-decoration: none;
}
.card:hover { border-color: var(--accent); text-decoration: none; }
.card h3 { margin: 0 0 6px; font-size: 15px; }
.card p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.45; }
.card.lab { box-shadow: inset 3px 0 0 var(--a); }
.card.pip { box-shadow: inset 3px 0 0 var(--b); }
.note, .warn, .ok {
  border-radius: 10px;
  padding: 12px 14px;
  margin: 16px 0;
  font-size: 14px;
  border: 1px solid var(--line);
}
.note { background: color-mix(in srgb, var(--accent) 12%, transparent); border-color: color-mix(in srgb, var(--accent) 35%, transparent); }
.warn { background: var(--warn-bg); color: var(--warn); }
.ok { background: var(--ok-bg); color: var(--ok); }
.badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 999px;
  vertical-align: middle;
}
.badge.lab { background: var(--a-soft, rgba(234,88,12,0.18)); color: var(--a); }
.badge.pip { background: rgba(20,184,166,0.16); color: var(--b); }
.badge.grey { background: var(--line); color: var(--muted); }
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
  margin: 12px 0 20px;
  background: var(--chrome);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}
th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
tr:last-child td { border-bottom: 0; }
th { color: var(--muted); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; background: color-mix(in srgb, var(--chrome) 70%, var(--desk)); }
pre, .ascii {
  background: var(--code-bg);
  color: var(--code-ink);
  border: 1px solid var(--code-line);
  border-radius: 12px;
  padding: 14px 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.45;
  box-shadow: 0 1px 0 rgba(255,255,255,0.04), 0 8px 24px rgba(0,0,0,0.28);
}
.code {
  position: relative;
  margin: 12px 0 20px;
  background: var(--code-bg);
  border: 1px solid var(--code-line);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 1px 0 rgba(255,255,255,0.04), 0 8px 24px rgba(0,0,0,0.28);
}
.code pre {
  margin: 0;
  padding: 44px 16px 16px;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}
.copy {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 1;
  background: #27272a;
  border: 1px solid #52525b;
  color: #e4e4e7;
  border-radius: 8px;
  padding: 4px 10px;
  font: 600 11px var(--font-ui);
  cursor: pointer;
}
.copy:hover { border-color: var(--accent); color: var(--accent); background: #3f3f46; }
.copy:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}
.ascii { white-space: pre; }
pre code { font-size: inherit; }
.steps { counter-reset: step; list-style: none; padding: 0; }
.steps li {
  position: relative;
  padding: 0 0 16px 40px;
  border-left: 1px solid var(--line);
  margin-left: 12px;
}
.steps li:last-child { border-left-color: transparent; }
.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: -11px;
  top: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--chrome);
  border: 1px solid var(--line);
  font-size: 11px;
  font-weight: 700;
  display: grid;
  place-items: center;
}
.site-foot {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 0 0 40px;
  font-size: 12px;
  color: var(--muted);
}
@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; width: min(100% - 32px, 760px); }
  .side { position: static; display: flex; flex-wrap: wrap; gap: 4px; }
  .side p { width: 100%; }
  .side a { padding: 6px 8px; }
  .cards { grid-template-columns: 1fr; }
  .nav { padding: 10px 16px; flex-wrap: wrap; }
}