/* Shared by the static /learn pages ONLY. These live outside the React app —
   Caddy serves them straight off disk — so they carry their own CSS and cannot
   use the app's design tokens. Kept small and dependency-free on purpose: the
   whole point of these pages is that a crawler gets finished HTML with nothing
   to fetch and nothing to execute. */
:root {
  --ink: #0f172a; --muted: #475569; --line: #e2e8f0;
  --bg: #ffffff; --soft: #f8fafc; --brand: #0d9488; --brand-dark: #0f766e;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e2e8f0; --muted: #94a3b8; --line: #1e293b;
    --bg: #0b1220; --soft: #111a2b; --brand: #2dd4bf; --brand-dark: #14b8a6;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Segoe UI", Tahoma, system-ui, -apple-system, sans-serif;
  line-height: 1.85; font-size: 17px;
}
a { color: var(--brand-dark); }
@media (prefers-color-scheme: dark) { a { color: var(--brand); } }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header.site {
  border-bottom: 1px solid var(--line); padding: 16px 0; margin-bottom: 40px;
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { font-weight: 700; font-size: 20px; color: var(--ink); text-decoration: none; }
.brand span { color: var(--brand-dark); }
@media (prefers-color-scheme: dark) { .brand span { color: var(--brand); } }
h1 { font-size: 2rem; line-height: 1.4; margin: 0 0 12px; }
h2 { font-size: 1.3rem; margin: 40px 0 12px; }
.lede { font-size: 1.15rem; color: var(--muted); margin: 0 0 32px; }
.cta {
  display: inline-block; background: var(--brand-dark); color: #fff;
  padding: 13px 30px; border-radius: 10px; text-decoration: none; font-weight: 600;
}
.cta:hover { background: var(--brand); }
.note { color: var(--muted); font-size: 0.92rem; margin-top: 10px; }
.card {
  border: 1px solid var(--line); border-radius: 12px;
  padding: 18px 22px; margin: 14px 0; background: var(--soft);
}
.card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); }
ol.steps { padding-inline-start: 22px; }
ol.steps li { margin-bottom: 14px; }
.caveat {
  border-inline-start: 4px solid var(--brand-dark);
  background: var(--soft); padding: 14px 20px; border-radius: 0 10px 10px 0;
  margin: 32px 0; color: var(--muted);
}
nav.more { margin: 44px 0 0; padding-top: 24px; border-top: 1px solid var(--line); }
nav.more a { display: block; margin-bottom: 10px; }
footer.site {
  margin-top: 56px; padding: 26px 0 40px; border-top: 1px solid var(--line);
  color: var(--muted); font-size: 0.9rem;
}