:root {
  color-scheme: light dark;
  --bg: #f7fafc;
  --text: #0f172a;
  --muted: #526174;
  --accent: #2563eb;
  --panel: #ffffff;
  --border: #dbe4ee;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --text: #eef4ff;
    --muted: #a8b5c7;
    --accent: #7dd3fc;
    --panel: #111b2e;
    --border: #22314a;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

main {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 64px;
}

.back-link {
  display: inline-flex;
  margin-bottom: 28px;
  font-size: 0.95rem;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 8vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.updated {
  margin: 10px 0 32px;
  color: var(--muted);
  font-weight: 600;
}

section {
  padding: 24px 0;
  border-top: 1px solid var(--border);
}

h2 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  letter-spacing: 0;
}

p {
  margin: 0 0 12px;
  color: var(--muted);
}

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

a {
  color: var(--accent);
  text-decoration: none;
  overflow-wrap: anywhere;
}