body { font-family: system-ui, -apple-system, sans-serif; margin: 0; color: #111; background: #fff; line-height: 1.55; }
main { max-width: 42rem; margin: 0 auto; padding: 2.5rem 1.25rem 4rem; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 0.5rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 0.5rem; }
h3 { font-size: 1rem; margin: 1.25rem 0 0.4rem; }
p, li { color: #222; }
a { color: #504af9; }
ul { padding-left: 1.2rem; }
.muted { color: #555; }
.meta { font-size: 0.85rem; color: #666; }
.lang { font-size: 0.85rem; color: #666; margin: 0 0 1.25rem; }
.lang strong { color: #111; }
.card { border: 1px solid #ececef; border-radius: 16px; padding: 1.1rem 1.2rem; margin: 0.75rem 0; }