:root {
  color-scheme: light;
  --ink: #1d2a32;
  --muted: #5a6b73;
  --paper: #f7f8f5;
  --surface: #fff;
  --line: #dce4df;
  --accent: #176b64;
  --accent-soft: #e1f1ed;
  --accent-deep: #124b47;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
[data-theme="meadow"] { --accent: #4b6f35; --accent-soft: #edf3e5; --accent-deep: #354d27; }
[data-theme="clay"] { --accent: #9a4f32; --accent-soft: #f7e9e1; --accent-deep: #68341f; }
[data-theme="night"] { --accent: #4f5e9d; --accent-soft: #e9ebf7; --accent-deep: #343e70; }
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--paper); line-height: 1.65; }
a { color: var(--accent-deep); text-underline-offset: .2em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 3px; }
.skip-link { position: absolute; left: -10000px; top: 8px; z-index: 2; padding: 8px 12px; background: var(--surface); }
.skip-link:focus { left: 8px; }
.site-header { max-width: 1080px; margin: 0 auto; padding: 22px 28px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 760; letter-spacing: -.025em; text-decoration: none; }
.brand img { width: 34px; height: 34px; }
nav { display: flex; flex-wrap: wrap; gap: 10px 24px; }
nav a { color: var(--muted); font-size: .93rem; font-weight: 620; text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent-deep); text-decoration: underline; }
main { width: min(1080px, 100%); margin: 0 auto; padding: 68px 28px 88px; }
.eyebrow { color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
h1, h2, h3 { color: #17242b; line-height: 1.16; letter-spacing: -.035em; }
h1 { max-width: 820px; margin: 12px 0 16px; font-size: clamp(2.55rem, 7vw, 5.2rem); }
h2 { margin: 0 0 12px; font-size: clamp(1.3rem, 3vw, 1.8rem); }
h3 { margin: 25px 0 8px; font-size: 1.12rem; }
.lede { max-width: 760px; margin: 0; color: var(--muted); font-size: clamp(1.08rem, 2.1vw, 1.32rem); }
.intro-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(220px, .7fr); gap: 26px; align-items: stretch; }
.note-card, .article-card { border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.note-card { padding: 25px; background: var(--accent-soft); }
.note-card p { margin: 0; }
.content-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 44px; }
.article-card { padding: 25px; }
.article-card p { margin: 0 0 18px; color: var(--muted); }
.article-card a { font-weight: 720; }
.article { max-width: 760px; margin-top: 34px; }
.article p, .article li { color: #35474f; font-size: 1.04rem; }
.article ul, .article ol { padding-left: 1.3rem; }
.article li + li { margin-top: 8px; }
.callout { margin: 28px 0; padding: 18px 21px; border-left: 4px solid var(--accent); border-radius: 0 12px 12px 0; background: var(--accent-soft); }
.callout p { margin: 0; }
.small-table { width: 100%; margin: 22px 0; border-collapse: collapse; background: var(--surface); }
.small-table th, .small-table td { padding: 11px 13px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.small-table th { background: var(--accent-soft); }
.site-footer { max-width: 1080px; margin: 0 auto; padding: 22px 28px 34px; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.site-footer p { margin: 0; }
@media (max-width: 680px) {
  .site-header { align-items: flex-start; flex-direction: column; padding: 18px 20px; }
  nav { gap: 8px 16px; }
  main { padding: 48px 20px 64px; }
  .intro-grid, .content-grid { grid-template-columns: 1fr; }
  .site-footer { padding: 20px; }
}
@media (prefers-reduced-motion: no-preference) {
  .article-card { transition: border-color .18s ease, transform .18s ease; }
  .article-card:hover { transform: translateY(-2px); border-color: var(--accent); }
}