/* Site shell: tokens, base reset, and the left nav shared by every page.
   Guide pages define the same tokens in their own <style>, so they win there. */
:root {
  --paper: #EEF1EA;
  --panel: #E2E8DC;
  --card: #F8FAF5;
  --ink: #1E2B23;
  --ink-soft: #4C5C51;
  --moss: #3E6A34;
  --line: #A9B8A6;
  --display: "Zilla Slab", "Rockwell", Georgia, serif;
  --body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --nav-w: 264px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #131915; --panel: #1B231E; --card: #1F2822; --ink: #DCE5DA; --ink-soft: #9DAEA0;
    --moss: #93C47E; --line: #3A4A40; color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--body); }
img { max-width: 100%; }
[hidden] { display: none !important; }

/* Nav */
.mg-nav {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  font-family: var(--body);
  font-size: 15px;
  line-height: 1.4;
  padding: 20px max(16px, env(safe-area-inset-left, 0px)) 20px max(16px, env(safe-area-inset-right, 0px));
  margin-inline: calc(-1 * max(16px, env(safe-area-inset-left, 0px))) calc(-1 * max(16px, env(safe-area-inset-right, 0px)));
  display: grid;
  gap: 16px;
}
.mg-home {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.35rem;
  line-height: 1.15;
  color: var(--ink);
  text-decoration: none;
}
.mg-home:hover { color: var(--moss); }
.mg-nav h2 {
  font-family: var(--display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin: 0;
}
.mg-nav ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.mg-nav ol a {
  display: grid;
  grid-template-columns: 4.2rem minmax(0, 1fr);
  gap: 8px;
  padding: 7px 10px;
  border-radius: 4px;
  color: var(--ink);
  text-decoration: none;
}
.mg-nav ol a:hover { background: var(--card); }
.mg-nav ol a[aria-current="page"] { background: var(--card); box-shadow: inset 3px 0 0 var(--moss); font-weight: 600; }
.mg-ch { color: var(--ink-soft); font-variant-numeric: tabular-nums; font-size: 0.85rem; padding-top: 1px; }
.mg-src { font-size: 0.82rem; color: var(--ink-soft); }
.mg-src a { color: var(--moss); }
.mg-nav a:focus-visible { outline: 2px solid var(--moss); outline-offset: 2px; }

@media (min-width: 960px) {
  body.mg-shell { padding-left: calc(var(--nav-w) + max(24px, env(safe-area-inset-left, 0px))); }
  .mg-nav {
    position: fixed;
    top: 0; bottom: 0; left: 0;
    width: var(--nav-w);
    margin: 0;
    border-bottom: 0;
    border-right: 1px solid var(--line);
    overflow-y: auto;
    padding: 32px 18px 24px max(18px, env(safe-area-inset-left, 0px));
    align-content: start;
    gap: 22px;
  }
}

/* Home page */
.mg-page { max-width: 760px; margin: 0 auto; padding-block: 48px 72px; padding-inline: 0; }
body.mg-home-page { padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); font-size: 16px; line-height: 1.6; }
@media (min-width: 960px) {
  body.mg-home-page { padding-left: calc(var(--nav-w) + max(24px, env(safe-area-inset-left, 0px))); }
}
.mg-page h1 { font-family: var(--display); font-weight: 700; font-size: clamp(2.2rem, 6vw, 3.2rem); line-height: 1.1; margin: 0; text-wrap: balance; }
.mg-page .lede { font-size: 1.1rem; color: var(--ink-soft); margin: 14px 0 0; max-width: 62ch; }
.mg-list { list-style: none; margin: 40px 0 0; padding: 0; display: grid; }
.mg-list li { border-top: 1px solid var(--line); padding: 18px 0; display: grid; grid-template-columns: 5rem minmax(0, 1fr); gap: 4px 16px; }
.mg-list li:last-child { border-bottom: 1px solid var(--line); }
.mg-list .mg-ch { font-size: 0.95rem; padding-top: 4px; }
.mg-list a { font-family: var(--display); font-weight: 600; font-size: 1.35rem; color: var(--moss); text-underline-offset: 3px; }
.mg-list p { margin: 4px 0 0; color: var(--ink-soft); max-width: 62ch; }
.mg-note { margin-top: 28px; font-size: 0.9rem; color: var(--ink-soft); max-width: 62ch; }
@media (max-width: 520px) { .mg-list li { grid-template-columns: 1fr; } }