:root { color-scheme: light; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #21323b; background: #f5f7f6; line-height: 1.65; }
* { box-sizing: border-box; }
body { margin: 0; }
a { color: #15594e; text-underline-offset: .2em; }
a:hover { color: #0b3d34; }
a:focus-visible { outline: 3px solid #a86a16; outline-offset: 5px; border-radius: 2px; }
.skip { position: absolute; left: 1rem; top: -5rem; padding: .6rem 1rem; background: white; }
.skip:focus { top: 1rem; }
header, main, footer { width: min(100% - 3rem, 48rem); margin-inline: auto; }
header { padding-block: 2rem; border-bottom: 1px solid #d9e1de; display: flex; gap: 1rem; align-items: baseline; justify-content: space-between; flex-wrap: wrap; }
.brand { font-size: 1.1rem; font-weight: 750; text-decoration: none; color: #21323b; letter-spacing: -.03em; }
nav a { font-size: .95rem; }
main { padding-block: 3.75rem 4rem; }
h1, h2 { line-height: 1.2; letter-spacing: -.035em; color: #172b29; }
h1 { font-size: clamp(2.1rem, 6vw, 3.3rem); margin: 0 0 1.5rem; max-width: 18ch; }
h2 { font-size: 1.4rem; margin-block: 2.5rem .8rem; }
p { margin-block: 0 1.15rem; }
.lead { font-size: 1.2rem; }
.notice { margin-block: 2rem; padding: 1.25rem 1.5rem; border-left: 3px solid #2a6c5e; background: #e9efec; }
ul { padding-left: 1.4rem; }
li { margin-block: .65rem; }
.updated, footer { color: #52625e; font-size: .9rem; }
footer { border-top: 1px solid #d9e1de; padding-block: 1.5rem 2rem; }
footer p { margin: .3rem 0; }
@media (max-width: 480px) { header, main, footer { width: calc(100% - 2rem); } header { padding-block: 1.25rem; } main { padding-block: 2.5rem; } .notice { padding: 1rem; } }