/* AI Runs My Business blog (added 21 Oct 2026).
   Same purple brand as the home and kit pages (palette: tasks/archive/airmb-colour-scheme-pass.md),
   set for long reading: narrower column, larger line height, softer body text. */

:root {
  --ink: #ffffff;
  --ink-2: #e6dcf8;
  --ink-3: #cba9f2;
  --paper: #280c57;
  --paper-2: #321070;
  --rule-soft: rgba(255,255,255,0.14);
  --accent: #f5299b;
  --accent-dark: #d31585;
  --accent-ink: #ff9bd1;
  --term-bg: #1b0838;
  --term-green: #31d6f2;
  --serif: "Fraunces", "Iowan Old Style", Georgia, serif;
  --sans: "Inter", -apple-system, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --maxw: 1160px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-ink); }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }

/* header, matching the home page */
.topbar { border-bottom: 1px solid var(--rule-soft); background: var(--paper); position: sticky; top: 0; z-index: 20; }
.topbar-inner { display: flex; align-items: center; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 14px; font-weight: 600; text-decoration: none; color: var(--ink); margin-right: auto; }
.brand-mark { width: 22px; height: 22px; border-radius: 5px; background: var(--term-bg); display: inline-flex; align-items: center; justify-content: center; color: var(--term-green); font-size: 12px; }
.brand-mark::before { content: "$"; }
.topbar-link { font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--accent-ink); text-decoration: none; white-space: nowrap; margin-right: 20px; border-bottom: 1px solid transparent; }
.topbar-link:hover { border-bottom-color: var(--accent-ink); }
.topbar .cta { font-size: 14px; font-weight: 600; background: var(--accent); color: var(--paper); padding: 9px 18px; border-radius: 7px; text-decoration: none; white-space: nowrap; }
.topbar .cta:hover { background: var(--accent-dark); }
.short { display: none; }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 50; background: var(--accent); color: var(--paper); padding: 8px 14px; border-radius: 6px; font-weight: 600; }
.skip:focus { left: 16px; }
a:focus-visible { outline: 2px solid var(--accent-ink); outline-offset: 3px; }

/* the article */
main.wrap { padding: 56px 32px 80px; }
.post, .blog-intro, .post-list { max-width: 700px; margin: 0 auto; }
.crumb { font-family: var(--mono); font-size: 13px; margin: 0 0 18px; }
.crumb a { text-decoration: none; }
h1 { font-family: var(--serif); font-weight: 600; font-size: 44px; line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 16px; }
.post-meta { color: var(--ink-3); font-size: 15px; margin: 0 0 36px; }
.post-meta a { color: var(--ink-3); }
.post-body { color: var(--ink-2); }
.post-body h2 { font-family: var(--serif); font-weight: 600; font-size: 28px; line-height: 1.25; color: var(--ink); margin: 44px 0 12px; }
.post-body h3 { font-size: 20px; color: var(--ink); margin: 32px 0 8px; }
.post-body p { margin: 0 0 18px; }
.post-body ul { margin: 0 0 20px; padding-left: 22px; }
.post-body li { margin: 0 0 8px; }
.post-body strong { color: var(--ink); }
.post-body hr { border: none; border-top: 1px solid var(--rule-soft); margin: 40px 0 24px; }
.post-body hr + p { font-size: 15px; color: var(--ink-3); }

/* blog index */
.blog-intro p { color: var(--ink-2); margin: 0 0 40px; }
.post-list { list-style: none; padding: 0; }
.post-card { border-top: 1px solid var(--rule-soft); padding: 28px 0; }
.post-card a { text-decoration: none; }
.post-card h2 { font-family: var(--serif); font-weight: 600; font-size: 26px; line-height: 1.25; color: var(--ink); margin: 0 0 6px; }
.post-card a:hover h2 { color: var(--accent-ink); }
.post-card .post-meta { margin: 0 0 10px; }
.post-card p { color: var(--ink-2); margin: 0; }

/* footer, matching the home page */
footer { border-top: 1px solid var(--rule-soft); background: var(--paper-2); padding: 40px 0 56px; font-size: 14.5px; line-height: 1.55; color: var(--ink-2); }
.footer-grid { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
footer p { margin: 0 0 8px; max-width: 520px; }
footer a { color: var(--accent-ink); font-weight: 600; }
.footer-links { display: flex; gap: 22px; align-items: flex-start; flex-wrap: wrap; }
.footer-links a { text-decoration: none; border-bottom: 1px solid var(--rule-soft); }
.footer-links a:hover { border-bottom-color: var(--accent); }

@media (max-width: 700px) {
  .wrap, main.wrap { padding-left: 16px; padding-right: 16px; }
  main.wrap { padding-top: 36px; }
  body { font-size: 17px; }
  h1 { font-size: 32px; }
  .post-body h2 { font-size: 23px; }
  .topbar-link { font-size: 12px; margin-right: 12px; }
  .topbar .cta { font-size: 13px; padding: 8px 12px; }
  .long { display: none; }
  .short { display: inline; }
}
@media (max-width: 380px) {
  .brand span:last-child { font-size: 12px; }
  .topbar-free { display: none; }
}