:root {
  --ink: #1B2733;
  --primary: #0E5E6F;
  --primary-dark: #0A4855;
  --accent: #E9A23B;
  --surface: #F5F7F8;
  --border: #DDE3E8;
  --muted: #5A6B78;
  --success: #1E7D4F;
  --danger: #B42318;
  --bg: #FFFFFF;
  --radius: 12px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); font-size: 17px; line-height: 1.6; color: var(--ink); background: var(--bg); }
img, svg { max-width: 100%; height: auto; }
a { color: var(--primary); text-underline-offset: 2px; }
a:hover { color: var(--primary-dark); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--ink); color: #fff; padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; top: 8px; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { border-bottom: 1px solid var(--border); background: var(--bg); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 19px; }
.brand img { width: 30px; height: 30px; }
.site-nav { display: flex; flex-wrap: wrap; gap: 4px 18px; }
.site-nav a { color: var(--muted); text-decoration: none; font-size: 15px; padding: 6px 0; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav a[aria-current="page"] { font-weight: 600; }

/* Home */
.hero { padding: 56px 0 28px; }
.hero h1 { font-size: clamp(28px, 5vw, 42px); line-height: 1.2; margin: 0 0 14px; letter-spacing: -0.01em; max-width: 22ch; }
.hero p { font-size: 19px; color: var(--muted); max-width: 60ch; margin: 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; padding: 12px 0 48px; }
.card { display: flex; flex-direction: column; gap: 8px; padding: 20px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg); text-decoration: none; color: var(--ink); transition: border-color .15s, box-shadow .15s; }
.card:hover { border-color: var(--primary); box-shadow: 0 2px 10px rgba(27, 39, 51, .08); color: var(--ink); }
.card .kind { font-size: 13px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--primary); }
.card h2 { font-size: 20px; margin: 0; line-height: 1.3; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.card .go { margin-top: auto; padding-top: 6px; font-weight: 600; color: var(--primary); font-size: 15px; }
.note { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; margin: 0 0 48px; color: var(--muted); font-size: 16px; }

/* Long-form pages */
.page { padding-top: 40px; padding-bottom: 56px; }
.prose { max-width: 760px; }
.prose h1 { font-size: clamp(26px, 4vw, 34px); line-height: 1.25; margin: 0 0 8px; }
.prose h2 { font-size: 22px; margin: 34px 0 8px; line-height: 1.3; }
.prose h3 { font-size: 18px; margin: 24px 0 6px; }
.prose p, .prose li { overflow-wrap: anywhere; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin: 4px 0; }
.prose code { font-family: var(--mono); font-size: 15px; background: var(--surface); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; overflow-wrap: anywhere; }
.prose .meta { color: var(--muted); font-size: 15px; margin: 0 0 20px; }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }
.table-wrap { overflow-x: auto; margin: 12px 0; border: 1px solid var(--border); border-radius: 8px; }
.prose table { border-collapse: collapse; width: 100%; font-size: 15px; }
.prose th, .prose td { text-align: left; vertical-align: top; padding: 9px 12px; border-bottom: 1px solid var(--border); }
.prose th { background: var(--surface); font-weight: 600; }
.prose tr:last-child td { border-bottom: 0; }
.toc { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 20px; margin: 20px 0 8px; }
.toc strong { display: block; font-size: 14px; color: var(--muted); margin-bottom: 4px; }
.toc ul { margin: 0; padding-left: 1.1em; columns: 2 220px; column-gap: 24px; }
.toc li { margin: 2px 0; font-size: 15px; }
.callout { border-left: 4px solid var(--accent); background: #FDF6EA; padding: 12px 16px; border-radius: 0 8px 8px 0; margin: 16px 0; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--surface); color: var(--muted); font-size: 14px; }
.site-footer .wrap { padding-top: 24px; padding-bottom: 28px; display: grid; gap: 10px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--ink); }
.site-footer p { margin: 0; max-width: 90ch; }

@media (max-width: 600px) {
  body { font-size: 16px; }
  .hero { padding: 36px 0 20px; }
  .hero p { font-size: 17px; }
  .page { padding-top: 28px; padding-bottom: 40px; }
}