:root { color-scheme: light dark; --bg: #f4f8fb; --fg: #16222e; --muted: #5b6b7a; --accent: #2c6492; --card: #ffffff; }
@media (prefers-color-scheme: dark) { :root { --bg: #0f1a26; --fg: #e8eef4; --muted: #9fb0c0; --accent: #6fa6d4; --card: #16283a; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 56px 20px 80px; }
h1 { font-family: "New York", Georgia, serif; font-weight: 500; font-size: 40px; line-height: 1.15; margin: 0 0 8px; }
h2 { font-family: "New York", Georgia, serif; font-weight: 500; font-size: 24px; margin: 40px 0 8px; }
p, li { color: var(--fg); }
.lead { color: var(--muted); font-size: 19px; margin-top: 0; }
.card { background: var(--card); border-radius: 22px; padding: 20px 24px; margin: 24px 0; }
a { color: var(--accent); }
footer { margin-top: 56px; color: var(--muted); font-size: 15px; }
nav a { margin-right: 16px; }