:root {
  --paper: #f3ead7;
  --paper-2: #e8dcc4;
  --ink: #1a1612;
  --ink-soft: #4a4338;
  --rule: #c4b396;
  --rust: #8f2f1f;
  --rust-deep: #6b2216;
  --ok: #2c4a3a;
  --gutter: max(1rem, env(safe-area-inset-left));
  --gutter-r: max(1rem, env(safe-area-inset-right));
}
* { box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
@media (min-width: 720px) { html { font-size: 18px; } }
html, body { margin: 0; padding: 0; background: var(--paper); color: var(--ink); }
body {
  font-family: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  line-height: 1.55;
  min-height: 100vh;
  padding-bottom: env(safe-area-inset-bottom);
}
a { color: var(--rust); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--rust-deep); }
.wrap { max-width: 42rem; margin: 0 auto; padding: 0 var(--gutter) 0 var(--gutter-r); padding-left: var(--gutter); padding-right: var(--gutter-r); }
.wide { max-width: 58rem; }
.kicker, .mono, nav, footer, .meta, .gate label, button, .btn {
  font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  letter-spacing: 0.02em;
}
header.site {
  border-bottom: 1px solid var(--ink);
  padding: 0.7rem 0 0.65rem;
  background: var(--paper);
  position: sticky; top: 0; z-index: 5;
}
header.site .bar {
  max-width: 58rem; margin: 0 auto;
  padding: 0 var(--gutter-r) 0 var(--gutter);
  display: flex; flex-direction: column; align-items: stretch; gap: 0.65rem;
}
@media (min-width: 860px) {
  header.site .bar { flex-direction: row; align-items: baseline; justify-content: space-between; }
}
.wordmark {
  font-family: "Source Serif 4", Georgia, serif;
  font-weight: 600;
  font-size: 1.12rem;
  color: var(--ink);
  text-decoration: none;
  border: none;
}
.wordmark span { display: block; font-family: "IBM Plex Mono", monospace; font-size: 0.62rem; font-weight: 400; color: var(--ink-soft); letter-spacing: 0.12em; text-transform: uppercase; }
nav { display: flex; flex-wrap: wrap; gap: 0.15rem 0.15rem; }
nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.68rem;
  text-transform: uppercase;
  margin: 0;
  padding: 0.45rem 0.55rem 0.45rem 0;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}
nav a:hover { color: var(--rust); }
nav a[aria-current="page"] { border-bottom: 1px solid var(--ink); }
.hero { padding: 2.1rem 0 1.7rem; border-bottom: 1px solid var(--rule); }
@media (min-width: 720px) { .hero { padding: 3.2rem 0 2.4rem; } }
.hero h1 {
  font-weight: 600;
  font-size: clamp(1.7rem, 8vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0.35rem 0 0.85rem;
}
.lede { font-size: 1.05rem; color: var(--ink-soft); max-width: 38rem; }
@media (min-width: 720px) { .lede { font-size: 1.15rem; } }
.kicker { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--rust); }
section { padding: 1.6rem 0; border-bottom: 1px solid var(--rule); }
@media (min-width: 720px) { section { padding: 2.2rem 0; } }
h2 { font-size: 1.3rem; font-weight: 600; margin: 0 0 0.8rem; }
h3 { font-size: 1.05rem; margin: 1.4rem 0 0.4rem; }
p { margin: 0 0 0.9rem; }
ul { margin: 0 0 1rem 1.1rem; padding: 0; }
li { margin: 0 0 0.35rem; }
.truths { display: grid; gap: 1.1rem; }
@media (min-width: 720px) { .truths { grid-template-columns: 1fr 1fr 1fr; gap: 1.4rem; } }
.card {
  border-top: 2px solid var(--ink);
  padding-top: 0.7rem;
}
.card strong { display: block; margin-bottom: 0.35rem; }
.entries { display: grid; gap: 0; }
.entries a {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.55rem;
  color: var(--ink);
  text-decoration: none;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--rule);
  min-height: 44px;
}
@media (min-width: 720px) {
  .entries a { grid-template-columns: 4.5rem 1fr; gap: 0.8rem; }
}
.entries a:hover { color: var(--rust); }
.entries .num { font-family: "IBM Plex Mono", monospace; font-size: 0.75rem; color: var(--ink-soft); padding-top: 0.25rem; }
.entries h3 { margin: 0 0 0.2rem; font-size: 1.1rem; }
.entries p { margin: 0; font-size: 0.95rem; color: var(--ink-soft); }
.btn, button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  color: var(--paper);
  border: 0;
  padding: 0.75rem 1rem;
  min-height: 44px;
  font-size: 0.75rem;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  width: fit-content;
  max-width: 100%;
}
.btn:hover, button:hover { background: var(--rust); color: var(--paper); }
.note { font-size: 0.92rem; color: var(--ink-soft); }
article.entry { padding: 1.6rem 0 2.4rem; }
@media (min-width: 720px) { article.entry { padding: 2.4rem 0 3rem; } }
article.entry h1 { font-size: clamp(1.55rem, 7vw, 2.5rem); line-height: 1.15; margin: 0.4rem 0 1rem; }
article.entry .deck { font-size: 1.05rem; color: var(--ink-soft); margin-bottom: 1.4rem; }
.close { font-size: 1.05rem; border-top: 1px solid var(--ink); padding-top: 1rem; margin-top: 1.6rem; }
footer.site {
  max-width: 58rem; margin: 0 auto;
  padding: 1.3rem var(--gutter-r) calc(1.6rem + env(safe-area-inset-bottom)) var(--gutter);
  font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-soft);
  display: flex; justify-content: space-between; gap: 0.8rem; flex-wrap: wrap;
}
footer.site a { color: inherit; text-decoration: none; min-height: 40px; display: inline-flex; align-items: center; }
form { display: grid; gap: 0.7rem; max-width: 26rem; margin-top: 1rem; width: 100%; }
label { font-size: 0.68rem; text-transform: uppercase; display: grid; gap: 0.25rem; }
input, textarea {
  font: inherit;
  font-size: 16px;
  padding: 0.7rem 0.65rem;
  border: 1px solid var(--ink);
  background: #fffdf6;
  color: var(--ink);
  width: 100%;
  max-width: 100%;
}
.gate {
  position: fixed; inset: 0;
  background: rgba(26,22,18,0.45);
  display: none; align-items: flex-end; justify-content: center;
  z-index: 20;
}
.gate.open { display: flex; }
.gate .panel {
  background: var(--paper);
  width: min(32rem, 100%);
  padding: 1.2rem 1.1rem calc(1.4rem + env(safe-area-inset-bottom));
  border-top: 2px solid var(--ink);
}
.gate h2 { font-size: 1.15rem; }
.muted { color: var(--ink-soft); font-size: 0.92rem; }

.fig {
  margin: 1.4rem 0 1.6rem;
  padding: 0.9rem 0 0.2rem;
  border-top: 2px solid var(--ink);
}
.fig .fig-k { font-family: "IBM Plex Mono", monospace; font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--rust); margin: 0 0 0.45rem; }
.fig h3 { margin: 0 0 0.85rem; font-size: 1.15rem; }
.fig-row { display: grid; gap: 0.55rem; }
@media (min-width: 640px) { .fig-row.cols-3 { grid-template-columns: 1fr 1fr 1fr; } .fig-row.cols-2 { grid-template-columns: 1fr 1fr; } .fig-row.cols-5 { grid-template-columns: repeat(5, 1fr); } }
.cell {
  border: 1px solid var(--ink);
  padding: 0.7rem 0.75rem;
  background: #fffdf6;
}
.cell b { display: block; font-size: 0.95rem; margin: 0 0 0.25rem; }
.cell span { display: block; font-size: 0.88rem; color: var(--ink-soft); line-height: 1.35; }
.cell.bad { background: #f3ead7; }
.cell.good { border-width: 2px; }
.flow { display: flex; flex-wrap: wrap; align-items: stretch; gap: 0.4rem; }
.flow .cell { flex: 1 1 8rem; }
.arrow { display: none; }
@media (min-width: 640px) {
  .arrow { display: flex; align-items: center; color: var(--rust); font-size: 1.3rem; flex: 0 0 auto; }
}
.fig p.cap { font-size: 0.88rem; color: var(--ink-soft); margin: 0.7rem 0 0; }