:root {
  --paper: #f3efe6;
  --paper-2: #eae4d6;
  --ink: #1c1914;
  --ink-soft: #4a453c;
  --line: #d4cdc0;
  --accent: #6b3a22;
  --stable: #2d5a3d;
  --worse: #8a2f1d;
  --card: #fbf8f1;
  --max: 72rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "IBM Plex Sans", "Source Sans 3", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
}

a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }

.wrap { width: min(var(--max), calc(100% - 2rem)); margin: 0 auto; }

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 20;
}
.header-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  flex-wrap: wrap;
}
.wordmark {
  font-family: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.nav { display: flex; gap: 0.9rem; flex-wrap: wrap; }
.nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
}
.nav a:hover { color: var(--ink); }

.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.6rem;
}
h1, h2, h3, .serif {
  font-family: "Source Serif 4", Georgia, serif;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); line-height: 1.05; margin: 0 0 0.6rem; font-weight: 600; }
h2 { font-size: 1.55rem; margin: 0 0 0.5rem; }
h3 { font-size: 1.15rem; margin: 0 0 0.4rem; }

.hero { padding: 2.4rem 0 1.5rem; }
.deck { font-size: 1.25rem; margin: 0 0 0.8rem; }
.support { color: var(--ink-soft); max-width: 40rem; margin: 0 0 1.6rem; }

.chooser-label { font-weight: 600; margin: 0 0 0.7rem; }
.chooser {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
}
@media (min-width: 700px) {
  .chooser { grid-template-columns: 1fr 1fr; }
}
.chooser a {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  padding: 0.95rem 1rem;
  font-weight: 550;
}
.chooser a:hover { border-color: var(--ink); }
.chooser a small {
  display: block;
  font-weight: 400;
  color: var(--ink-soft);
  font-size: 0.8rem;
  margin-top: 0.2rem;
}

.layers-line { margin: 1rem 0 0; color: var(--ink-soft); font-size: 0.95rem; }

section { padding: 2rem 0; border-top: 1px solid var(--line); }
.sub { color: var(--ink-soft); margin: 0 0 1.1rem; }

.week-grid, .build-grid, .gauges {
  display: grid;
  gap: 0.75rem;
}
@media (min-width: 800px) {
  .week-grid, .build-grid { grid-template-columns: 1fr 1fr 1fr; }
  .gauges { grid-template-columns: 1fr 1fr; }
}

.card, .gauge, .ai-box {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 1rem 1.05rem 1.1rem;
}
.kicker {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.35rem;
}
.card p, .gauge p { margin: 0.4rem 0 0.7rem; color: var(--ink-soft); }
.card a, .gauge a { font-weight: 600; text-decoration: none; }
.card a:hover, .gauge a:hover { text-decoration: underline; }

.gauge .num {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 2.15rem;
  line-height: 1;
  margin: 0.15rem 0 0.35rem;
}
.state {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}
.state.stable { color: var(--stable); }
.state.worse { color: var(--worse); }
.state.common { color: var(--ink-soft); }
.source { font-size: 0.8rem; color: var(--ink-soft); }

.ai-box { margin-top: 0.75rem; }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2.5rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}
.site-footer a { color: var(--ink-soft); }
.legal { margin: 0 0 0.8rem; color: var(--ink); }

.article { padding: 2rem 0 3rem; max-width: 42rem; }
.meta { color: var(--ink-soft); font-size: 0.92rem; margin: 0 0 1.2rem; }
.who { background: var(--paper-2); padding: 0.85rem 1rem; margin: 0 0 1.4rem; }
.article h2 { margin-top: 1.6rem; }
.article ul, .article ol { padding-left: 1.2rem; }
.article li { margin: 0.3rem 0; }
.article table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.article th, .article td { border-bottom: 1px solid var(--line); text-align: left; padding: 0.4rem 0.35rem; vertical-align: top; }
.notice {
  font-size: 0.88rem;
  color: var(--ink-soft);
  border-left: 3px solid var(--line);
  padding: 0.2rem 0 0.2rem 0.8rem;
  margin: 1rem 0;
}
code, .mono { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 0.9em; }