/* Lapped — the bicycle workshop. Technical light theme: steel blue + safety orange. */
:root {
  --bg: #eef1f4;
  --surface: #ffffff;
  --surface-2: #f4f6f8;
  --ink: #2b3036;
  --muted: #6b737c;
  --steel: #2f5d7a;
  --steel-dark: #244a61;
  --orange: #e07b39;
  --orange-dark: #c4621f;
  --line: #d7dde3;
  --sans: -apple-system, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--steel); text-decoration: none; }
a:hover { color: var(--steel-dark); text-decoration: underline; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* header */
.site-header { border-top: 4px solid var(--orange); border-bottom: 1px solid var(--line); background: var(--surface); }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 20px; padding-top: 14px; padding-bottom: 14px; }
.brand { font-family: var(--mono); font-size: 1.5rem; font-weight: 700; letter-spacing: 0.03em; text-transform: uppercase; color: var(--steel); }
.brand:hover { text-decoration: none; }
.tagline { color: var(--muted); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.08em; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-left: auto; }
.nav a { color: var(--muted); font-size: 0.85rem; }
.nav a:hover { color: var(--steel); text-decoration: none; }

/* hero */
.hero { max-width: 1080px; margin: 0 auto; padding: 60px 24px 40px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #e3e9ef 0%, var(--bg) 100%); }
.kicker { color: var(--orange-dark); font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; margin: 0 0 14px; }
.hero h1 { font-size: clamp(1.6rem, 3.6vw, 2.4rem); font-weight: 700; line-height: 1.25; margin: 0 0 16px; max-width: 780px; color: var(--steel-dark); }
.lead { color: var(--muted); font-size: 1.05rem; max-width: 640px; margin: 0; }

/* chapters (home) */
.chapter { max-width: 1080px; margin: 0 auto; padding: 42px 24px; }
.chapter + .chapter { border-top: 1px solid var(--line); }
.chapter-title { font-size: 1.3rem; margin: 0 0 18px; display: flex; align-items: center; gap: 12px; color: var(--steel-dark); }
.numeral {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: #fff;
  background: var(--orange);
  border-radius: 2px;
  padding: 2px 8px;
  letter-spacing: 0.05em;
}
.entries { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 12px; }
.entry {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 3px solid var(--steel);
  transition: border-color .15s ease, transform .15s ease;
}
.entry:hover { border-left-color: var(--orange); text-decoration: none; transform: translateY(-1px); }
.entry-name { font-weight: 600; color: var(--ink); font-size: 1rem; }
.entry:hover .entry-name { color: var(--steel); }
.entry-meta { color: var(--muted); font-family: var(--mono); font-size: 0.75rem; }

/* topic page */
.topic { max-width: 800px; margin: 0 auto; padding: 32px 24px 64px; }
.crumbs { font-size: 0.82rem; color: var(--muted); margin: 0 0 22px; }
.crumbs span { margin: 0 6px; color: var(--line); }
.topic-head { border-bottom: 3px solid var(--orange); padding-bottom: 22px; margin-bottom: 8px; }
.topic-head h1 { font-size: clamp(1.6rem, 3.6vw, 2.2rem); line-height: 1.2; margin: 0 0 10px; color: var(--steel-dark); }
.topic-desc { color: var(--muted); font-size: 1.02rem; margin: 0 0 18px; }
.facts { display: flex; flex-wrap: wrap; gap: 10px 28px; margin: 0; padding: 0; }
.facts div { min-width: 120px; }
.facts dt { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--orange-dark); margin: 0 0 3px; }
.facts dd { margin: 0; font-size: 1rem; font-weight: 600; }
.block { padding: 26px 0; border-bottom: 1px solid var(--line); }
.block h2 { font-size: 1.28rem; margin: 0 0 12px; color: var(--steel); }
.block p { margin: 0 0 14px; color: var(--ink); }
.block p:last-child { margin-bottom: 0; }

/* related */
.related { margin-top: 36px; padding: 20px 22px; background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--steel); }
.related h2 { font-size: 1.05rem; margin: 0 0 12px; color: var(--steel-dark); }
.related ul { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 8px 22px; }
.related li { font-weight: 600; }

/* legal/page */
.page { max-width: 800px; margin: 0 auto; padding: 40px 24px 64px; }
.page h1 { font-size: 2rem; border-bottom: 3px solid var(--orange); padding-bottom: 14px; color: var(--steel-dark); }
.prose h2 { font-size: 1.18rem; color: var(--steel); margin: 26px 0 10px; }
.prose a { text-decoration: underline; }

/* footer */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); margin-top: 40px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 24px; padding-top: 22px; padding-bottom: 26px; }
.site-footer p { margin: 0; color: var(--muted); font-size: 0.85rem; }
.foot-nav { display: flex; gap: 18px; }
.foot-nav a { color: var(--muted); font-size: 0.85rem; }

@media (max-width: 640px) {
  .nav { margin-left: 0; }
  .site-header .wrap { flex-direction: column; }
  .hero { padding: 44px 20px 32px; }
}