:root {
  --bg: #fbfaf7;
  --ink: #15181d;
  --muted: #5b6270;
  --line: #e7e4dd;
  --accent: #0e6b55;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
header, main, footer { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header { padding-top: 24px; padding-bottom: 24px; }
.logo { font-family: "Source Serif 4", Georgia, serif; font-size: 26px; font-weight: 600; color: var(--ink); text-decoration: none; }
.logo span { color: var(--accent); }
h1 { font-family: "Source Serif 4", Georgia, serif; font-size: 38px; line-height: 1.15; margin: 24px 0 8px; }
h2 { font-size: 21px; margin: 40px 0 8px; }
h3 { font-size: 17px; margin: 24px 0 4px; }
.updated { color: var(--muted); margin: 0 0 32px; }
.summary { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 18px 22px; }
.summary ul { margin: 8px 0 0; padding-left: 20px; }
li + li { margin-top: 6px; }
footer { border-top: 1px solid var(--line); margin-top: 56px; padding-top: 24px; padding-bottom: 48px; font-size: 15px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 16px 24px; }
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--ink); }
@media (max-width: 640px) {
  body { font-size: 16px; }
  header, main, footer { padding-left: 16px; padding-right: 16px; }
  h1 { font-size: 30px; }
}