:root {
  --fg: #1c1e21;
  --muted: #5b6169;
  --bg: #fdfdfc;
  --panel: #f4f4f2;
  --line: #dcdcd8;
  --accent: #0b5fff;
  --ok: #1a7f37;
  --warn: #9a6700;
  --bad: #b42318;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e6e6e3;
    --muted: #a2a8b0;
    --bg: #16181c;
    --panel: #1f2226;
    --line: #32363c;
    --accent: #7aa2ff;
    --ok: #57c98a;
    --warn: #e0b64a;
    --bad: #ff8a80;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
  max-width: 46rem;
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
}

a { color: var(--accent); }

.site-header {
  border-bottom: 1px solid var(--line);
  padding-bottom: .9rem;
  margin-bottom: 1.75rem;
}

.site-title { font-weight: 700; font-size: 1.15rem; text-decoration: none; color: var(--fg); }
.site-tagline { display: block; color: var(--muted); font-size: .9rem; margin: .2rem 0 .6rem; }
.site-header nav a { margin-right: .9rem; font-size: .92rem; }

h1 { font-size: 1.6rem; line-height: 1.25; margin: 0 0 .4rem; }
h2 { font-size: 1.2rem; margin-top: 2rem; }

.tip-list { list-style: none; padding: 0; }
.tip-list li { padding: .85rem 0; border-bottom: 1px solid var(--line); }
.tip-list .meta { display: block; color: var(--muted); font-size: .85rem; }

.surface {
  display: inline-block;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .1rem .5rem;
  color: var(--muted);
}

.badge { display: inline-block; font-size: .8rem; border-radius: 4px; padding: .15rem .45rem; }
.badge.ok { color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, transparent); }
.badge.warn { color: var(--warn); background: color-mix(in srgb, var(--warn) 12%, transparent); }
.badge.expired { color: var(--bad); background: color-mix(in srgb, var(--bad) 12%, transparent); }

.notice { border-left: 3px solid var(--warn); background: var(--panel); padding: .75rem 1rem; margin: 1.25rem 0; }

dl.facts { display: grid; grid-template-columns: 11rem 1fr; gap: .3rem .9rem; margin: 1.25rem 0; font-size: .92rem; }
dl.facts dt { color: var(--muted); }
dl.facts dd { margin: 0; overflow-wrap: anywhere; }

@media (max-width: 34rem) {
  dl.facts { grid-template-columns: 1fr; gap: 0; }
  dl.facts dt { margin-top: .7rem; }
  dl.facts dd { margin-bottom: .2rem; }
}

pre {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: .8rem 1rem;
  overflow-x: auto;
  font-size: .85rem;
  line-height: 1.5;
}

code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9em; }

.tip .summary { font-size: 1.05rem; color: var(--muted); margin: -.2rem 0 1rem; }

.site-footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }

@media print {
  :root { --fg: #000; --muted: #333; --bg: #fff; --panel: #fff; --line: #999; }
  body { max-width: none; padding: 0; }
  .site-header nav, .site-footer { display: none; }
}