:root {
  --bg: #FBF8F3;
  --surface: #FFFFFF;
  --text: #1F2A30;
  --muted: #5B666C;
  --line: #E6E0D6;
  --accent: #2F6F6A;
  --accent-soft: #E4EFEC;
  --draft-bg: #FFF4D6;
  --draft-text: #6B4E00;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12181B;
    --surface: #1A2226;
    --text: #E8ECEC;
    --muted: #A3AEB2;
    --line: #2B363B;
    --accent: #7CC2B8;
    --accent-soft: #1F3533;
    --draft-bg: #3A3016;
    --draft-text: #F3D98A;
  }
}
:root[data-theme="dark"] {
  --bg: #12181B;
  --surface: #1A2226;
  --text: #E8ECEC;
  --muted: #A3AEB2;
  --line: #2B363B;
  --accent: #7CC2B8;
  --accent-soft: #1F3533;
  --draft-bg: #3A3016;
  --draft-text: #F3D98A;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header.site {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; padding-top: 14px; padding-bottom: 14px;
}
.brand { font-weight: 650; font-size: 20px; letter-spacing: .2px; color: var(--text); text-decoration: none; }
nav a { margin-left: 16px; text-decoration: none; color: var(--muted); font-size: 15px; }
nav a:first-child { margin-left: 0; }
nav a[aria-current="page"] { color: var(--text); font-weight: 600; }
.draft {
  background: var(--draft-bg); color: var(--draft-text);
  font-size: 14px; line-height: 1.5; padding: 10px 0;
}
main { padding: 32px 0 56px; }
h1 { font-size: 32px; line-height: 1.2; margin: 0 0 6px; }
.meta { color: var(--muted); font-size: 15px; margin: 0 0 28px; }
h2 { font-size: 21px; margin: 36px 0 8px; padding-top: 8px; border-top: 1px solid var(--line); }
h3 { font-size: 17px; margin: 22px 0 4px; }
ul { padding-left: 22px; }
li { margin: 4px 0; }
.toc { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; }
.toc ol { margin: 6px 0 0; padding-left: 20px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; margin: 14px 0; }
.note { background: var(--accent-soft); border-radius: 10px; padding: 12px 16px; }
.review { background: var(--draft-bg); color: var(--draft-text); border-radius: 8px; padding: 8px 12px; font-size: 14px; }
footer.site { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; padding: 22px 0 40px; }
footer.site a { color: var(--muted); margin-right: 14px; }
@media (max-width: 520px) {
  h1 { font-size: 27px; }
  nav a { margin-left: 12px; }
}

/* Home page */
.hero { padding: 4px 0 8px; }
.hero h1 { font-size: 36px; margin-bottom: 12px; }
.lede { font-size: 19px; line-height: 1.55; margin: 0 0 10px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin: 14px 0; }
.feature { margin: 0; }
.feature h3 { margin: 0 0 4px; }
.feature p { margin: 0; font-size: 15px; color: var(--muted); }
@media (max-width: 520px) {
  .hero h1 { font-size: 29px; }
  .lede { font-size: 17px; }
}