:root {
  color-scheme: light dark;
  --background: #ffffff;
  --text: #17324f;
  --muted: #4a586a;
  --line: #d5dbe3;
  --notice: #edf0f4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0f1e30;
    --text: #f3f5f7;
    --muted: #b4c0ce;
    --line: #34495f;
    --notice: #2b4057;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 16px 96px;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

h1,
h2,
h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  line-height: 1.25;
}

h1 {
  font-size: 2.1rem;
  margin: 0 0 8px;
}

h2 {
  font-size: 1.45rem;
  margin: 40px 0 8px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

h3 {
  font-size: 1.15rem;
  margin: 24px 0 4px;
}

a {
  color: inherit;
}

li {
  margin-bottom: 8px;
}

.updated,
footer {
  color: var(--muted);
  font-size: 0.95rem;
}

.notice {
  margin: 16px 0;
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--notice);
}

.home {
  text-align: center;
}

.home img {
  width: 300px;
  margin: 24px auto;
}