:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #172b38; background: #fafbf9; font-size: 17px; line-height: 1.7; }
* { box-sizing: border-box; }
body { margin: 0; }
header, main, footer { max-width: 820px; margin: 0 auto; padding: 28px 32px; }
header { border-bottom: 1px solid #d6dedc; }
.site-name { font-weight: 650; text-decoration: none; color: #172b38; }
nav { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: 12px; font-size: .9rem; }
a { color: #15585b; text-underline-offset: .2em; overflow-wrap: anywhere; }
a:hover { color: #0b3335; }
a:focus-visible { outline: 3px solid #558f93; outline-offset: 4px; }
h1 { font-size: clamp(1.8rem, 4vw, 2.35rem); line-height: 1.2; letter-spacing: -.025em; margin: 18px 0 24px; }
h2 { font-size: 1.2rem; line-height: 1.4; margin: 32px 0 12px; }
p, li { overflow-wrap: anywhere; }
p { margin: 0 0 20px; }
ul { padding-left: 24px; }
.effective { color: #51606b; font-size: .9rem; }
footer { border-top: 1px solid #d6dedc; margin-top: 16px; padding-bottom: 48px; }
@media (max-width: 480px) { header, main, footer { padding-left: 20px; padding-right: 20px; } }