:root {
  --bg: #f6f7f4;
  --card: #ffffff;
  --stroke: #d9ddd5;
  --text: #1f2421;
  --hi: #0d1110;
  --lo: #5b645e;
  --link: #1d6b4f;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111513;
    --card: #1a1f1c;
    --stroke: #2e3832;
    --text: #e3e8e4;
    --hi: #f5f8f6;
    --lo: #9aa59e;
    --link: #6fd3a8;
  }
}
:root[data-theme="dark"] {
  --bg: #111513;
  --card: #1a1f1c;
  --stroke: #2e3832;
  --text: #e3e8e4;
  --hi: #f5f8f6;
  --lo: #9aa59e;
  --link: #6fd3a8;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--link); }
.shell { max-width: 760px; margin: 0 auto; padding: 24px 16px 64px; }
.top {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px; margin-bottom: 28px;
}
.brand { color: var(--hi); text-decoration: none; font-weight: 800; }
nav a { margin-left: 14px; color: var(--lo); text-decoration: none; font-size: 14px; }
nav a:hover { color: var(--hi); }
.card {
  background: var(--card); border: 1px solid var(--stroke);
  border-radius: 16px; padding: 28px 22px;
}
h1 { color: var(--hi); font-size: 30px; line-height: 1.2; margin: 6px 0 10px; }
h2 { color: var(--hi); font-size: 19px; margin: 28px 0 8px; }
.meta { color: var(--lo); font-size: 14px; }
ul { padding-left: 20px; }
li { margin: 6px 0; }
footer { color: var(--lo); font-size: 13px; margin-top: 28px; text-align: center; }