/* ─────────────────────────────────────────────────────────────────────────────
   THE HOUSE LEDGER — the reading pages (About, FAQ)

   Same material as the dashboard: a ruled sheet, a brass rail, one ink colour
   spent sparingly. Long-form prose is set in the serif "human" voice; anything
   the machine says (commands, document ids, phrases you type) is monospace.
   Tokens are copied from index.html verbatim so the two never drift apart.
   ───────────────────────────────────────────────────────────────────────────── */
:root {
  color-scheme: light dark;
  --ground: #e8e3d7; --surface: #f2eee4; --sunk: #ded8c8;
  --ink: #14161c; --ink-2: #4a4a44; --muted: #8a8578;
  --rule: #d2cbb9; --rule-strong: #b9b09a;
  --brass: #8a6d0f; --brass-soft: rgba(154,123,18,.13);
  --refuse: #a8321f; --refuse-soft: rgba(168,50,31,.10);
  --felt: #1c4a3d;
  --shadow: 0 1px 0 rgba(20,22,28,.04);
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
  --ground: #101319; --surface: #171b22; --sunk: #0b0e13;
  --ink: #e8e3d7; --ink-2: #a9a498; --muted: #6e6e66;
  --rule: #262b33; --rule-strong: #39404b;
  --brass: #c9a227; --brass-soft: rgba(201,162,39,.14);
  --refuse: #d4543c; --refuse-soft: rgba(212,84,60,.14);
  --felt: #16352c;
  --shadow: none;
}}
:root[data-theme="dark"] {
  --ground: #101319; --surface: #171b22; --sunk: #0b0e13;
  --ink: #e8e3d7; --ink-2: #a9a498; --muted: #6e6e66;
  --rule: #262b33; --rule-strong: #39404b;
  --brass: #c9a227; --brass-soft: rgba(201,162,39,.14);
  --refuse: #d4543c; --refuse-soft: rgba(212,84,60,.14);
  --felt: #16352c; --shadow: none;
}
:root {
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --prose: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --ui: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--ground); color: var(--ink);
  font: 14px/1.5 var(--ui);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brass); }

/* ── the rail, shared with the dashboard ─────────────────────────────────── */
.rail {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 14px;
  padding: 11px clamp(16px, 4vw, 40px);
  background: color-mix(in srgb, var(--ground) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.wordmark {
  font: 600 13px/1 var(--mono); letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
}
.wordmark b { color: var(--brass); font-weight: 600; }
.rail nav { display: flex; gap: 14px; }
.rail nav a {
  font: 11px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted); text-decoration: none;
}
.rail nav a:hover, .rail nav a[aria-current="page"] { color: var(--brass); }
.rail .spacer { flex: 1; }
button {
  background: transparent; color: var(--ink); border: 1px solid var(--rule-strong);
  border-radius: 2px; padding: 6px 10px; cursor: pointer;
  font: 500 10px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase;
}
button:hover { border-color: var(--brass); color: var(--brass); }
button:focus-visible { outline: 2px solid var(--brass); outline-offset: 2px; }

/* ── the sheet ────────────────────────────────────────────────────────────── */
main {
  max-width: 1120px; margin-inline: auto;
  padding: 0 clamp(16px, 4vw, 40px) 100px;
  display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 48px;
}
.toc {
  position: sticky; top: 64px; align-self: start; padding-top: 44px;
  max-height: calc(100vh - 64px); overflow-y: auto;
}
.toc .label {
  font: 11px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase;
  color: var(--muted); padding-bottom: 9px; margin-bottom: 10px;
  border-bottom: 1px solid var(--rule-strong);
}
.toc a {
  display: block; font: 12px/1.35 var(--mono); color: var(--ink-2);
  text-decoration: none; padding: 5px 0 5px 12px; border-left: 2px solid transparent;
}
.toc a:hover { color: var(--brass); }
.toc a.sub { padding-left: 24px; font-size: 11px; color: var(--muted); }
.toc a.current { border-left-color: var(--brass); color: var(--brass); }

article { padding-top: 40px; min-width: 0; }
.kicker {
  font: 11px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--muted);
}
h1 {
  font: 300 clamp(30px, 4.5vw, 44px)/1.1 var(--mono); letter-spacing: -.02em;
  margin: 12px 0 14px;
}
.lede {
  font-family: var(--prose); font-size: 19px; line-height: 1.5; color: var(--ink-2);
  max-width: 62ch; margin-bottom: 8px;
}
.stamp-note {
  display: inline-block; font: 600 9px/1 var(--mono); letter-spacing: .12em;
  text-transform: uppercase; padding: 3px 5px; border: 1.5px solid currentColor;
  transform: rotate(-3deg); white-space: nowrap; color: var(--brass);
  background: var(--brass-soft); margin: 10px 0 0;
}

section { padding-top: 44px; }
.head {
  display: flex; align-items: baseline; gap: 14px;
  padding-bottom: 9px; margin-bottom: 20px;
  border-bottom: 1px solid var(--rule-strong);
}
h2 {
  font: 600 12px/1 var(--mono); letter-spacing: .2em; text-transform: uppercase;
  color: var(--ink);
}
.head .note { font: 11px/1 var(--mono); letter-spacing: .08em; color: var(--muted); margin-left: auto; }
h3 {
  font: 500 15px/1.35 var(--mono); letter-spacing: 0; color: var(--ink);
  margin: 30px 0 10px; scroll-margin-top: 70px;
}
h3 .q { color: var(--brass); margin-right: 8px; }
h2[id], section[id] { scroll-margin-top: 70px; }

/* Prose is the humane voice. */
.prose { font-family: var(--prose); font-size: 16px; line-height: 1.6; max-width: 68ch; }
.prose p { margin: 0 0 14px; }
.prose ul, .prose ol { margin: 0 0 14px 22px; }
.prose li { margin-bottom: 6px; }
.prose li::marker { color: var(--brass); }
.prose strong { font-weight: 600; }
.prose em { color: var(--ink-2); }
.prose code, .step code, kbd {
  font: 12.5px/1 var(--mono); background: var(--brass-soft); color: var(--brass);
  padding: 3px 6px; letter-spacing: .03em; white-space: nowrap;
}
.prose pre {
  font: 12px/1.6 var(--mono); overflow-x: auto; padding: 14px;
  background: var(--sunk); border: 1px solid var(--rule); margin: 0 0 16px;
  white-space: pre; color: var(--ink);
}
.prose pre code { background: none; color: inherit; padding: 0; white-space: pre; }
.prose blockquote {
  margin: 0 0 16px; padding: 4px 0 4px 16px;
  border-left: 2px solid var(--brass); color: var(--ink-2); font-style: italic;
}

/* Callouts: a rule that bound (refuse) and a note from the house (brass). */
.callout {
  margin: 0 0 16px; padding: 12px 16px;
  border-left: 3px solid var(--brass); background: var(--brass-soft);
  font-family: var(--prose); font-size: 15px; color: var(--ink);
}
.callout.refuse { border-left-color: var(--refuse); background: var(--refuse-soft); }
.callout b { font-weight: 600; }

/* Tables — the machine's record. */
.sheet { overflow-x: auto; margin: 0 0 18px; }
table { width: 100%; border-collapse: collapse; }
th {
  font: 500 10px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase;
  color: var(--muted); text-align: left; padding: 0 10px 8px; white-space: nowrap;
  border-bottom: 1px solid var(--rule);
}
td { padding: 9px 10px; border-bottom: 1px solid var(--rule); font-size: 13.5px;
     vertical-align: top; }
tr:last-child td { border-bottom: 0; }
td.mono, .mono { font: 12.5px/1.5 var(--mono); white-space: nowrap; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td .why, .why { font-family: var(--prose); color: var(--ink-2); font-size: 13.5px; }

/* The pipeline as a ledger of steps: what happens, and what refuses. */
.steps { counter-reset: step; margin: 0 0 18px; }
.step {
  display: grid; grid-template-columns: 34px 1fr; gap: 12px;
  padding: 14px 0; border-bottom: 1px solid var(--rule);
}
.step:last-child { border-bottom: 0; }
.step .n {
  counter-increment: step; font: 300 22px/1 var(--mono); color: var(--brass);
  font-variant-numeric: tabular-nums;
}
.step .n::before { content: counter(step, decimal-leading-zero); }
.step h4 { font: 500 14px/1.35 var(--mono); margin: 2px 0 6px; }
.step p { font-family: var(--prose); font-size: 15px; line-height: 1.55; margin: 0 0 6px; max-width: 68ch; }
.step .refuses {
  font: 11px/1.5 var(--mono); letter-spacing: .04em; color: var(--ink-2);
  padding-left: 12px; border-left: 2px solid var(--rule-strong); margin-top: 8px;
}
.step .refuses b { color: var(--refuse); font-weight: 600; }

/* Glossary and definition rows. */
dl.gloss { margin: 0 0 18px; }
dl.gloss div { display: grid; grid-template-columns: 170px 1fr; gap: 14px; padding: 9px 0; border-bottom: 1px solid var(--rule); }
dl.gloss div:last-child { border-bottom: 0; }
dl.gloss dt { font: 500 12.5px/1.5 var(--mono); color: var(--ink); }
dl.gloss dd { font-family: var(--prose); font-size: 14.5px; line-height: 1.55; color: var(--ink-2); }

.pill { font: 10px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase;
        padding: 4px 7px; border: 1px solid var(--rule-strong); color: var(--ink-2); white-space: nowrap; }
.pill.warn { color: var(--brass); border-color: var(--brass); }
.pill.bad { color: var(--refuse); border-color: var(--refuse); }
.pill.good { color: var(--muted); border-color: var(--rule); }

.foot { margin-top: 56px; padding-top: 16px; border-top: 1px solid var(--rule); color: var(--muted); font-size: 12px; }
.foot a { color: var(--muted); }

@media (max-width: 860px) {
  main { grid-template-columns: 1fr; gap: 0; }
  .toc { position: static; max-height: none; padding-top: 30px; }
  .toc a { display: inline-block; padding: 4px 10px 4px 0; border-left: 0; }
  .toc a.sub { display: none; }
  dl.gloss div { grid-template-columns: 1fr; gap: 4px; }
  .prose code, .step code, kbd { white-space: normal; overflow-wrap: anywhere; }
  .rail { gap: 10px; } .rail nav { gap: 10px; }
}
@media (prefers-reduced-motion: no-preference) {
  article { animation: rise .5s cubic-bezier(.2,.7,.2,1) both; }
  @keyframes rise { from { opacity: 0; transform: translateY(6px); } }
}