:root { --bg: #f2f5ef; --surface: #fff; --ink: #16241b; --muted: #5b6a60; --accent: #1d7444; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) { --bg: #0e1511; --surface: #16201a; --ink: #e5eee7; --muted: #97a99c; --accent: #58c487; color-scheme: dark; }
}
:root[data-theme='dark'] { --bg: #0e1511; --surface: #16201a; --ink: #e5eee7; --muted: #97a99c; --accent: #58c487; color-scheme: dark; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 'Segoe UI', system-ui, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { font-size: 1.8rem; line-height: 1.2; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 28px 0 6px; }
p, li { color: var(--ink); }
.data { color: var(--muted); margin: 0 0 24px; }
a { color: var(--accent); font-weight: 600; }