/* ══════════════════════════════════════════════════════════════
   octomux docs — same system as the landing: paper ground,
   JetBrains Mono, zero radius, hairline rules. No gradients.
   ══════════════════════════════════════════════════════════════ */
:root {
  --paper:    #EDEDE9;
  --paper-2:  #E4E4DE;
  --paper-3:  #D9D9D2;
  --ink:      #15171A;
  --ink-2:    #45494F;
  --ink-3:    #5C6167;
  --rule:     #CBC8BF;
  --rule-2:   #9A968B;
  --rule-3:   #15171A;
  --red:      #B23A0C;
  --blue:     #1F4E79;
  --green:    #1B6B3A;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --disp: 'Archivo Black', 'Arial Black', sans-serif;
  --side: 244px;
  --toc: 200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; border-radius: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 76px; }
body {
  background: var(--paper); color: var(--ink-2);
  font-family: var(--mono); font-size: 14px; line-height: 1.65;
  -webkit-font-smoothing: antialiased; font-variant-numeric: tabular-nums;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }
a { color: var(--red); text-decoration: none; }
a:hover { text-decoration: underline; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ── masthead ─────────────────────────────────────────── */
.top { position: sticky; top: 0; z-index: 50; background: var(--paper); border-bottom: 1px solid var(--rule-3); }
.top-in { display: flex; align-items: center; gap: 24px; height: 54px; padding: 0 24px; }
.brand { display: flex; align-items: center; gap: 9px; color: var(--ink); flex: none; }
.brand img { width: 22px; height: 22px; }
.brand b { font-weight: 700; font-size: 14px; }
.brand .tag { font-size: 10px; color: var(--ink-3); border: 1px solid var(--rule-2); padding: 0 5px; font-weight: 400; }
.top nav { display: flex; gap: 20px; margin-left: auto; align-items: center; }
.top nav a { font-size: 12px; color: var(--ink-2); }
.top nav a:hover, .top nav a[aria-current] { color: var(--red); text-decoration: none; }
.top .gh { background: var(--ink); color: var(--paper); padding: 6px 12px; font-size: 12px; font-weight: 700; }
.top .gh:hover { background: var(--red); text-decoration: none; }

/* ── shell ────────────────────────────────────────────── */
.shell { display: grid; grid-template-columns: var(--side) minmax(0,1fr) var(--toc); align-items: start; max-width: 1360px; margin: 0 auto; }
aside.side { position: sticky; top: 54px; max-height: calc(100vh - 54px); overflow-y: auto; padding: 26px 18px 40px 24px; border-right: 1px solid var(--rule); }
.side h4 { font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); font-weight: 700; margin: 20px 0 8px; }
.side h4:first-child { margin-top: 0; }
.side a { display: block; font-size: 12.5px; color: var(--ink-2); padding: 4px 0 4px 10px; border-left: 1px solid var(--rule); }
.side a:hover { color: var(--ink); border-left-color: var(--rule-2); text-decoration: none; }
.side a[aria-current] { color: var(--red); border-left: 2px solid var(--red); font-weight: 700; }

main { padding: 34px 40px 96px; min-width: 0; }
aside.toc { position: sticky; top: 54px; padding: 34px 24px 40px 8px; }
.toc h4 { font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); font-weight: 700; margin-bottom: 9px; }
.toc a { display: block; font-size: 12px; color: var(--ink-3); padding: 3px 0; }
.toc a:hover { color: var(--red); text-decoration: none; }

/* ── content ──────────────────────────────────────────── */
.eyebrow { font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); font-weight: 700; margin-bottom: 10px; }
main h1 { font-family: var(--disp); font-weight: 400; font-size: clamp(1.7rem,3.6vw,38px); color: var(--ink); letter-spacing: -.04em; line-height: 1.05; margin-bottom: 14px; }
main h2 { font-family: var(--disp); font-weight: 400; font-size: 21px; color: var(--ink); letter-spacing: -.03em; margin: 40px 0 12px; padding-top: 18px; border-top: 1px solid var(--rule); }
main h3 { font-size: 14px; font-weight: 700; color: var(--ink); margin: 24px 0 8px; }
main p { margin-bottom: 14px; max-width: 74ch; }
main ul, main ol { margin: 0 0 16px 18px; max-width: 74ch; }
main li { margin-bottom: 6px; }
main li::marker { color: var(--ink-3); }
.lede { font-size: 14.5px; color: var(--ink-2); max-width: 70ch; margin-bottom: 24px; }
code { font-family: var(--mono); font-size: .92em; color: var(--red); }
pre { background: var(--ink); color: #C9CDD3; padding: 14px 16px; overflow-x: auto; font-size: 12px; line-height: 1.6; margin-bottom: 16px; max-width: 80ch; }
pre code { color: inherit; font-size: inherit; }
pre .c { color: #7C838C; }
pre .k { color: #FF9670; }
pre .f { color: #7FB0DC; }
table { border-collapse: collapse; width: 100%; max-width: 80ch; font-size: 12.5px; margin-bottom: 18px; border: 1px solid var(--rule-3); }
th, td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-size: 10px; letter-spacing: .09em; text-transform: uppercase; color: var(--ink-3); background: var(--paper-2); border-bottom: 1px solid var(--rule-3); }
tr:last-child td { border-bottom: 0; }
.note { border-left: 3px solid var(--ink); padding: 4px 0 4px 15px; margin: 0 0 18px; font-size: 13px; max-width: 76ch; }
.note.warn { border-left-color: var(--red); }
.note b { color: var(--ink); }
.cards { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); border-top: 1px solid var(--rule-3); border-left: 1px solid var(--rule-3); margin-bottom: 22px; max-width: 80ch; }
.card { border-right: 1px solid var(--rule-3); border-bottom: 1px solid var(--rule-3); padding: 16px 18px; }
.card b { display: block; color: var(--ink); font-size: 13px; margin-bottom: 5px; }
.card span { font-size: 12.5px; color: var(--ink-2); }
.card a { font-size: 12.5px; }
.status { display: inline-block; font-size: 9.5px; letter-spacing: .08em; text-transform: uppercase; border: 1px solid currentColor; padding: 1px 6px; }
.status.now { color: var(--green); }
.status.soon { color: var(--red); }
.pager { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--rule-3); margin-top: 48px; padding-top: 16px; font-size: 12.5px; }

@media (max-width: 1080px) { .shell { grid-template-columns: var(--side) minmax(0,1fr); } aside.toc { display: none; } }
@media (max-width: 780px) {
  .shell { grid-template-columns: minmax(0,1fr); }
  aside.side { position: static; max-height: none; border-right: 0; border-bottom: 1px solid var(--rule-3); padding: 18px 20px; }
  main { padding: 26px 20px 64px; }
  .top nav a:not(.gh) { display: none; }
  .cards { grid-template-columns: minmax(0,1fr); }
}