:root {
  --bg: #ffffff;
  --surface: #f6f7f9;
  --text: #16181d;
  --muted: #5b6270;
  --rule: #e3e6eb;
  --accent: #1f6feb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #171a21;
    --text: #e8eaed;
    --muted: #9aa2b1;
    --rule: #272b34;
    --accent: #6ea8ff;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 0 16px;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 56px 0 80px;
}

h1 {
  font-size: 1.9rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
}

h2 {
  font-size: 1.12rem;
  letter-spacing: -0.01em;
  margin: 2.4em 0 0.5em;
  padding-top: 1.1em;
  border-top: 1px solid var(--rule);
}

p, ul { margin: 0 0 1em; }

ul { padding-left: 1.25em; }

li { margin-bottom: 0.4em; }

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

.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 2em;
}

.summary {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 18px 20px;
  margin: 0 0 1em;
}

.summary p:last-child { margin-bottom: 0; }

footer {
  margin-top: 3.5em;
  padding-top: 1.2em;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9rem;
}

footer a { color: var(--muted); }

.home h1 { margin-bottom: 0.2em; }

.home ul { list-style: none; padding: 0; }

.home li { margin-bottom: 0.8em; }