/* Blog pages: static HTML, same type and palette as the app (see src/styles.css). */
@font-face { font-family: "Instrument Sans"; src: url("/fonts/instrument-sans.woff2") format("woff2"); font-weight: 400 600; font-display: swap; }
@font-face { font-family: "Instrument Serif"; src: url("/fonts/instrument-serif.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Instrument Serif"; src: url("/fonts/instrument-serif-italic.woff2") format("woff2"); font-style: italic; font-weight: 400; font-display: swap; }

:root {
  --bg: #ffffff; --ink: #1a1a1a; --ink-2: #4a4a4a; --muted: #6b6b6b; --surface: #f5f5f7; --surface-2: #ececef;
  --line: #e6e6e6; --outline: #d5d5d5; --accent: #e8262d; --solid: #1a1a1a; --solid-ink: #ffffff;
  --serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --sans: "Instrument Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Noto Sans", sans-serif;
  --radius: 14px;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
h1, h2, h3 { font-weight: 400; margin: 0; }

.site { display: flex; align-items: center; justify-content: space-between; gap: 16px; max-width: 1080px; margin: 0 auto; padding: 18px 20px; }
header.site nav { display: flex; align-items: center; gap: 18px; font-size: 15px; }
header.site nav a:not(.button) { text-decoration: none; color: var(--ink-2); }
.wordmark { font-family: var(--serif); font-style: italic; font-size: 30px; color: var(--accent); text-decoration: none; letter-spacing: -0.02em; }
footer.site { flex-wrap: wrap; justify-content: flex-start; gap: 8px 20px; margin-top: 64px; border-top: 1px solid var(--line); padding-top: 24px; padding-bottom: 40px; font-size: 14px; color: var(--muted); }

.button { display: inline-flex; align-items: center; min-height: 44px; padding: 0 20px; border: 1px solid var(--outline); border-radius: 999px; text-decoration: none; font: 500 15px/1 var(--sans); background: var(--bg); color: var(--ink); }
.button:hover { background: var(--surface); }
.button.primary { background: var(--solid); border-color: var(--solid); color: var(--solid-ink); }
.button.primary:hover { opacity: 0.88; }
.label { display: block; font-size: 13px; color: var(--muted); }
.chip { display: inline-block; padding: 6px 14px; border-radius: 999px; background: var(--surface); text-decoration: none; font-size: 14px; }

main { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* Post */
.post { max-width: 760px; }
.crumbs { font-size: 14px; color: var(--muted); margin: 24px 0 18px; }
.crumbs a { text-decoration: none; }
.crumbs span { margin: 0 6px; }
.post h1, .index h1 { font-family: var(--serif); font-size: clamp(2.4rem, 6.5vw, 4rem); line-height: 1.02; letter-spacing: -0.03em; margin: 0 0 18px; }
.lede { font-size: 1.2rem; line-height: 1.5; color: var(--ink-2); margin: 0 0 14px; }
.meta { font-size: 14px; color: var(--muted); margin: 0 0 28px; }

.toc { background: var(--surface); border-radius: var(--radius); padding: 18px 22px; margin: 0 0 36px; }
.toc ol { margin: 8px 0 0; padding-left: 20px; columns: 2 240px; column-gap: 32px; }
.toc li { margin-bottom: 4px; break-inside: avoid; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

.prose h2 { font-family: var(--serif); font-size: clamp(1.8rem, 4.5vw, 2.4rem); line-height: 1.1; letter-spacing: -0.02em; margin: 56px 0 14px; scroll-margin-top: 16px; }
.prose h3 { font-family: var(--serif); font-size: 1.5rem; letter-spacing: -0.01em; margin: 32px 0 8px; }
.prose p, .prose li { color: var(--ink-2); }
.prose p { margin: 0 0 16px; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 18px; }
.prose li { margin-bottom: 6px; }
.prose a { text-underline-offset: 3px; }

.callout { border-radius: var(--radius); padding: 18px 22px; margin: 24px 0; background: var(--surface); }
.callout p:last-child { margin: 0; }
.callout.key { background: #fdf0f0; }
.callout.key strong { color: var(--accent); }

.table { margin: 24px 0 28px; }
.table .scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 15px; line-height: 1.45; }
caption { text-align: left; font-weight: 600; padding: 14px 16px 6px; color: var(--ink); }
th, td { text-align: left; padding: 10px 16px; border-top: 1px solid var(--line); vertical-align: top; }
thead th { border-top: none; font-size: 13px; font-weight: 500; color: var(--muted); white-space: nowrap; }
tbody th { font-weight: 600; color: var(--ink); white-space: nowrap; }
td { color: var(--ink-2); }
.num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
figcaption { font-size: 13px; color: var(--muted); margin-top: 8px; }

.faq details { border-top: 1px solid var(--line); padding: 14px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 500; color: var(--ink); }
.faq details p { margin: 10px 0 0; }
.sources { font-size: 14px; }
.sources a { word-break: break-word; }

.cta { margin: 56px 0 0; background: var(--surface); border-radius: 20px; padding: 32px 28px; }
.cta h2 { font-family: var(--serif); font-size: clamp(2rem, 5vw, 2.8rem); line-height: 1.05; letter-spacing: -0.025em; margin: 0 0 12px; }
.cta h2 em { color: var(--accent); }
.cta p { color: var(--ink-2); max-width: 36em; }
.cta .button { margin: 6px 6px 0 0; }

/* Index */
.index { max-width: 860px; padding-top: 24px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin: 0 0 24px; }
.cards { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.card { display: block; background: var(--surface); border-radius: var(--radius); padding: 24px; text-decoration: none; }
.card:hover { background: var(--surface-2); }
.card h2 { font-family: var(--serif); font-size: 1.9rem; line-height: 1.1; letter-spacing: -0.02em; margin: 6px 0 8px; }
.card p { color: var(--ink-2); margin: 0; }

@media (max-width: 560px) {
  body { font-size: 16px; }
  header.site nav a:not(.button) { display: none; }
  .wordmark { font-size: 26px; }
  .cta { padding: 24px 20px; }
}