:root {
  --bg: #fbfaf7;
  --fg: #1c1b19;
  --muted: #6b6861;
  --rule: #e4e1da;
  --link: #1c1b19;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0e0d;
    --fg: #ecebe7;
    --muted: #9a978f;
    --rule: #2a2926;
    --link: #ecebe7;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 20px 96px;
}

header { margin-bottom: 40px; }
header .home { color: var(--muted); text-decoration: none; font-weight: 600; letter-spacing: 0.02em; }
h1 { font-size: 34px; line-height: 1.15; margin: 16px 0 8px; letter-spacing: -0.01em; }
.meta { color: var(--muted); font-size: 15px; margin: 0; }

.summary {
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 0 0 40px;
}
.summary p { margin: 0 0 8px; font-weight: 600; }
.summary ul { margin: 0; padding-left: 20px; }

h2 { font-size: 21px; margin: 40px 0 8px; padding-top: 24px; border-top: 1px solid var(--rule); }
h3 { font-size: 17px; margin: 24px 0 4px; }
p, li { margin: 0 0 12px; }
ul { padding-left: 22px; }
a { color: var(--link); text-underline-offset: 2px; }


footer { margin-top: 64px; color: var(--muted); font-size: 15px; }
footer a { color: var(--muted); }