:root { --bg: #0f1115; --card: #171b22; --text: #e8eaed; --muted: #9aa3ad; --accent: #7fe0c2; --border: #2a313b; }
@media (prefers-color-scheme: light) {
  :root { --bg: #f6f7f9; --card: #ffffff; --text: #1b1f24; --muted: #5b6470; --accent: #0e7c66; --border: #dde1e6; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header a { color: var(--text); text-decoration: none; font-weight: 800; font-size: 22px; }
h1 { font-size: 28px; line-height: 1.25; margin: 28px 0 4px; }
h2 { font-size: 19px; margin: 32px 0 8px; }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 14px; }
a { color: var(--accent); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px; margin: 16px 0; }
ul { padding-left: 22px; }
footer { margin-top: 48px; color: var(--muted); font-size: 14px; }
footer a { margin-right: 14px; }