:root { --bg: #fbfbf9; --fg: #1f2933; --muted: #5b6770; --accent: #1d6f42; --line: #e3e5e1; }
@media (prefers-color-scheme: dark) { :root { --bg: #141816; --fg: #e8ebe7; --muted: #a3ada6; --accent: #6fcf97; --line: #2a302c; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 42rem; margin: 0 auto; padding: 48px 16px 64px; }
h1 { font-size: 1.7rem; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 1.15rem; margin: 32px 0 8px; }
p, li { color: var(--fg); }
.muted { color: var(--muted); font-size: .95rem; }
a { color: var(--accent); }
nav { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--line); font-size: .95rem; }
textarea { width: 100%; font: 13px/1.4 ui-monospace, Menlo, Consolas, monospace; padding: 8px; border: 1px solid var(--line); border-radius: 6px; background: transparent; color: var(--fg); }
button { margin-top: 8px; padding: 8px 14px; border: 0; border-radius: 6px; background: var(--accent); color: #fff; font: inherit; cursor: pointer; }