:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #23334b; background: #f7f9fc; }
* { box-sizing: border-box; }
body { margin: 0; }
a { color: #2268b3; }
.wrap { width: min(100% - 40px, 760px); margin: 0 auto; }
header { border-bottom: 1px solid #e1e8f0; background: #fff; }
header .wrap { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
header a { text-decoration: none; }
header .brand { color: #23334b; font-weight: 700; }
main { margin: 42px auto 64px; padding: 42px; border: 1px solid #e1e8f0; border-radius: 18px; background: #fff; line-height: 1.8; }
h1 { margin: 0 0 8px; font-size: 2rem; line-height: 1.3; }
h2 { margin: 32px 0 8px; font-size: 1.15rem; }
p, li { color: #475569; }
ul { padding-left: 1.4em; }
.date { margin-top: 0; font-size: .9rem; color: #64748b; }
footer { padding: 24px 0 40px; text-align: center; font-size: .9rem; }
footer a { margin: 0 10px; }
@media (max-width: 600px) { main { margin-top: 20px; padding: 26px 20px; } h1 { font-size: 1.6rem; } }