/* Static pages of the AI Engineer Study Library (notes, topics, hubs). Same palette as the app. */
:root { --bg: #f1f4f1; --surface: #ffffff; --ink: #16201b; --muted: #56635d; --line: #d6ded9; --accent: #2344bd;
  --accent-soft: #e4e9fd; --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace; --s-sm: .8125rem; --s-md: .9375rem; }
@media (prefers-color-scheme: dark) { :root { --bg: #0e1311; --surface: #151c19; --ink: #e3eae6; --muted: #98a59f;
  --line: #28322e; --accent: #9cb0ff; --accent-soft: #1c2650; color-scheme: dark; } }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 1rem/1.6 var(--body); overflow-wrap: anywhere; }
a { color: var(--accent); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 6px 10px; border-radius: 6px; z-index: 10; }
.skip:focus { left: 8px; }
.top { max-width: 52rem; margin: 0 auto; padding: 16px 16px 0; display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: baseline; }
.brand { font: 750 1.05rem/1.2 var(--display); color: var(--ink); text-decoration: none; }
.menu { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: var(--s-md); }
main { max-width: 52rem; margin: 0 auto; padding: 8px 16px 40px; }
h1 { font: 750 clamp(1.6rem, 4.5vw, 2.2rem)/1.12 var(--display); margin: 12px 0 10px; letter-spacing: -.01em; }
h2 { font: 600 1.2rem/1.3 var(--display); margin: 30px 0 8px; }
h3 { font: 600 1.02rem/1.35 var(--body); margin: 22px 0 6px; }
p, li { max-width: 46rem; }
ul, ol { padding-left: 1.3rem; }
li { margin: 6px 0; }
code { font: .9em var(--mono); }
blockquote { margin: 12px 0; padding: 8px 14px; border-left: 3px solid var(--line); color: var(--muted); }
table { border-collapse: collapse; display: block; overflow-x: auto; font-size: var(--s-md); }
th, td { border: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: top; }
.meta, .crumbs, .step { color: var(--muted); font-size: var(--s-sm); }
.crumbs { margin-top: 8px; }
.crumbs a { color: var(--muted); }
.step.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.source { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 8px;
  padding: 10px 14px; margin: 12px 0 18px; font-size: var(--s-md); }
.source p { margin: 4px 0; }
.more ul, .cards { list-style: none; padding: 0; }
.more li { margin: 8px 0; }
.cards { display: grid; gap: 10px; }
.cards > li { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; margin: 0; max-width: none; }
.cards > li > p { margin: 4px 0 0; }
.links { columns: 2 16rem; margin-top: 0; }
.links li { break-inside: avoid; margin: 0 0 8px; }
.weeks { margin: 6px 0 0; padding-left: 1.3rem; color: var(--muted); font-size: var(--s-md); }
.weeks li { margin: 2px 0; }
.brand-tag { font: 500 var(--s-sm) var(--mono); color: var(--muted); margin-left: 6px; }
.pager { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 32px; padding-top: 14px; border-top: 1px solid var(--line); }
.foot { max-width: 52rem; margin: 0 auto; padding: 18px 16px 48px; border-top: 1px solid var(--line); color: var(--muted); font-size: var(--s-sm); }
.foot p { margin: 6px 0; max-width: none; }
.foot-h { font-weight: 600; color: var(--ink); }