:root { color-scheme: light dark; --bg: #0d1024; --card: #1b2040; --text: #eef0fa; --muted: #a3a9c7; --accent: #5fe6b4; }
@media (prefers-color-scheme: light) { :root { --bg: #f5f6fb; --card: #ffffff; --text: #14172b; --muted: #5b6183; --accent: #0f9d74; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { font-size: 34px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 22px; margin: 36px 0 8px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
a { color: var(--accent); }
section { background: var(--card); border-radius: 18px; padding: 20px 22px; margin: 18px 0; }
section h2 { margin-top: 0; }
hr { border: 0; border-top: 1px solid var(--muted); opacity: .3; margin: 40px 0; }