:root {
  --bg: #fbfaf8;
  --panel: #ffffff;
  --border: #e3ded6;
  --text: #1c1a17;
  --muted: #6b6459;
  --accent: #9a4a1e;
  --accent-soft: #f5ece5;
  --code-bg: #f4f1ec;
  --shadow: 0 1px 2px rgba(28, 26, 23, .05);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #16150f;
    --panel: #1e1c17;
    --border: #33302a;
    --text: #ece7dd;
    --muted: #9d9484;
    --accent: #e08a55;
    --accent-soft: #2a231c;
    --code-bg: #24211b;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 ui-sans-serif, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 46rem; margin: 0 auto; padding: 3.5rem 1.25rem 5rem; }
code, pre, .mono { font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace; }

header { margin-bottom: 2.5rem; }

h1 {
  font-size: 2.6rem; line-height: 1.1; margin: 0 0 .5rem;
  letter-spacing: -.02em; font-weight: 650;
}

.kicker {
  margin: 0; color: var(--muted); font-size: .95rem;
  text-transform: uppercase; letter-spacing: .08em;
}

.crumb { margin: 0 0 .75rem; font-size: .9rem; }

.lead { font-size: 1.2rem; line-height: 1.5; margin: 1.75rem 0 1.75rem; }

h2 {
  font-size: 1.05rem; text-transform: uppercase; letter-spacing: .09em;
  color: var(--muted); font-weight: 600;
  margin: 3rem 0 1rem; padding-bottom: .5rem;
  border-bottom: 1px solid var(--border);
}

h3 { font-size: 1rem; margin: 0 0 .3rem; font-weight: 620; }
p { margin: 0 0 1rem; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

.note {
  background: var(--accent-soft); border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: .9rem 1.1rem; border-radius: 4px; margin: 1.5rem 0;
  font-size: .95rem;
}
.note strong { font-weight: 640; }
.note p:last-child { margin-bottom: 0; }

pre {
  background: var(--code-bg); border: 1px solid var(--border);
  padding: 1rem; border-radius: 6px; overflow-x: auto;
  font-size: .875rem; line-height: 1.55; margin: 0 0 1rem;
}

p code, li code, td code, .schema code {
  background: var(--code-bg); border: 1px solid var(--border);
  padding: .08em .35em; border-radius: 3px; font-size: .875em;
}

.schema {
  border: 1px solid var(--border); background: var(--panel);
  border-radius: 6px; padding: 1rem 1.15rem; margin-bottom: .85rem;
  box-shadow: var(--shadow);
}
.schema h3 a { text-decoration: none; }
.schema h3 a:hover { text-decoration: underline; }
.schema .role {
  display: inline-block; font-size: .72rem; text-transform: uppercase;
  letter-spacing: .07em; color: var(--muted); border: 1px solid var(--border);
  border-radius: 999px; padding: .1rem .55rem; margin-bottom: .55rem;
}
.schema p { margin: 0; font-size: .93rem; color: var(--muted); }
.schema .url {
  display: block; margin-top: .5rem; font-size: .8rem;
  color: var(--muted); word-break: break-all;
}

ul.links { list-style: none; padding: 0; margin: 0; }
ul.links li { padding: .55rem 0; border-bottom: 1px solid var(--border); font-size: .95rem; }
ul.links li:last-child { border-bottom: 0; }
ul.links .desc { color: var(--muted); }

.callout {
  display: block; border: 1px solid var(--border); background: var(--panel);
  border-radius: 6px; padding: 1.1rem 1.25rem; box-shadow: var(--shadow);
  text-decoration: none; color: var(--text);
}
.callout:hover { border-color: var(--accent); }
.callout strong { display: block; color: var(--accent); font-size: 1.05rem; margin-bottom: .3rem; }
.callout span { color: var(--muted); font-size: .93rem; }

.muted-note { font-size: .9rem; color: var(--muted); }

figure.diagram { margin: 2.25rem 0; }
figure.diagram img {
  display: block; width: 100%; height: auto;
  border: 1px solid var(--border); border-radius: 6px; background: #fbfaf8;
}
figure.diagram figcaption {
  margin-top: .7rem; font-size: .88rem; line-height: 1.5; color: var(--muted);
}

footer {
  margin-top: 4rem; padding-top: 1.25rem; border-top: 1px solid var(--border);
  color: var(--muted); font-size: .85rem;
}