:root {
  --bg: #f6f3ee;
  --paper: #fffcf7;
  --ink: #1b1a17;
  --muted: #5c584f;
  --line: #ddd6c8;
  --navy: #17324d;
  --navy-2: #0f2438;
  --gold: #b8872a;
  --gold-s: #f3e6c4;
  --code-bg: #172331;
  --code: #f4efe4;
  --ok: #1f6b45;
  --warn: #8a4b00;
  --link: #15527a;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font: 17px/1.55 "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #e8efe8 0, transparent 50%),
    radial-gradient(900px 400px at 100% 0, #efe6d4 0, transparent 45%),
    var(--bg);
}
a { color: var(--link); text-underline-offset: 3px; }
a:hover { color: var(--navy); }
code, kbd, pre { font-family: "IBM Plex Mono", "Source Code Pro", ui-monospace, Menlo, Consolas, monospace; font-size: .9em; }
code, kbd { background: var(--gold-s); padding: .1em .35em; border-radius: 4px; }
pre {
  background: var(--code-bg); color: var(--code);
  padding: 1rem 1.1rem; border-radius: 10px; overflow: auto;
  line-height: 1.45;
}
pre code { background: none; color: inherit; padding: 0; }
.wrap { max-width: 920px; margin: 0 auto; padding: 0 22px 80px; }
header.top {
  background: var(--navy-2);
  color: #f4efe4;
  padding: 18px 0 16px;
  border-bottom: 4px solid var(--gold);
}
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 0; }
.brand { text-decoration: none; color: inherit; }
.brand strong { display: block; font: 700 15px/1.2 "Helvetica Neue", Helvetica, Arial, sans-serif; letter-spacing: .04em; }
.brand span { display: block; font: 400 12px/1.3 "Helvetica Neue", Helvetica, Arial, sans-serif; opacity: .75; margin-top: 3px; }
.lang { display: flex; gap: 6px; font: 650 13px/1 "Helvetica Neue", Helvetica, Arial, sans-serif; }
.lang a { color: #f4efe4; text-decoration: none; border: 1px solid #4a657a; border-radius: 999px; padding: 6px 10px; }
.lang a.on, .lang a:hover { background: var(--gold); color: #1b1a17; border-color: var(--gold); }
h1 { font-size: 2.05rem; line-height: 1.2; margin: 1.6rem 0 .6rem; color: var(--navy-2); }
h2 { font-size: 1.4rem; margin: 2.2rem 0 .7rem; color: var(--navy); border-top: 1px solid var(--line); padding-top: 1.4rem; }
h3 { font-size: 1.12rem; margin: 1.4rem 0 .4rem; }
p.lead { font-size: 1.12rem; color: var(--muted); margin-top: 0; }
nav.toc { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin: 1.4rem 0 1.8rem; }
nav.toc strong { font: 700 12px/1 "Helvetica Neue", Helvetica, Arial, sans-serif; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
nav.toc ol { margin: 8px 0 0; padding-left: 1.2em; }
nav.toc li { margin: 3px 0; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; background: var(--paper); margin: .8rem 0 1.2rem; }
th, td { border: 1px solid var(--line); padding: 7px 9px; text-align: left; vertical-align: top; }
th { background: #efe8da; font: 650 13px/1.3 "Helvetica Neue", Helvetica, Arial, sans-serif; }
.note, .warn, .ok {
  border-radius: 10px; padding: 12px 14px; margin: 1rem 0;
  border: 1px solid var(--line); background: var(--paper);
}
.warn { border-left: 4px solid var(--gold); }
.ok { border-left: 4px solid var(--ok); }
.note { border-left: 4px solid var(--navy); }
footer {
  margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line);
  color: var(--muted); font-size: .92rem;
}
.ex { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin: 1rem 0; }
.ex h3 { margin-top: 0; }
ul.tight li { margin: 4px 0; }
.badge { display: inline-block; font: 650 11px/1 "Helvetica Neue", Helvetica, Arial, sans-serif; letter-spacing: .04em; text-transform: uppercase; background: var(--gold-s); color: #5c3d00; padding: 3px 7px; border-radius: 999px; }
@media (max-width: 640px) {
  body { font-size: 16px; }
  h1 { font-size: 1.6rem; }
  header.top .wrap { flex-wrap: wrap; }
}