:root { color-scheme: light; font-family: Arial, sans-serif; color: #20252b; background: #fff; line-height: 1.65; }
* { box-sizing: border-box; }
body { margin: 0; }
a { color: #006c93; text-underline-offset: 3px; overflow-wrap: anywhere; }
a:hover { color: #00435c; }
a:focus-visible, summary:focus-visible { outline: 3px solid #006c93; outline-offset: 4px; }
.site-header { border-bottom: 1px solid #dce2e5; }
.header-inner, main, footer { width: min(100% - 40px, 920px); margin-inline: auto; }
.header-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 28px; padding-block: 22px; }
.brand { color: #111; font-weight: 700; font-size: 24px; text-decoration: none; }
nav { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 14px; }
nav [aria-current="page"] { color: #20252b; font-weight: 700; text-decoration-thickness: 2px; }
main { padding-block: 30px 54px; }
h1 { margin: 0 0 8px; font-size: 32px; line-height: 1.25; }
h2 { margin: 32px 0 10px; font-size: 21px; line-height: 1.4; }
h3 { margin: 22px 0 8px; font-size: 17px; }
p { margin: 0 0 14px; }
li { margin-bottom: 9px; }
ul, ol { padding-left: 24px; }
.meta { color: #59646b; font-size: 14px; margin-bottom: 26px; }
.key-points { border-block: 1px solid #cdd8df; padding-block: 16px; }
.key-points p:last-child { margin-bottom: 0; }
section { scroll-margin-top: 20px; }
.contents { margin: 24px 0; }
dt { font-weight: 700; margin-top: 18px; }
dd { margin: 4px 0 16px; }
code { font-size: 13px; overflow-wrap: anywhere; }
footer { border-top: 1px solid #dce2e5; padding-block: 22px 34px; color: #59646b; font-size: 14px; }
@media (max-width: 480px) { .header-inner, main, footer { width: calc(100% - 32px); } h1 { font-size: 28px; } nav { gap: 8px 16px; } }
@media print { .site-header, footer, .contents { display: none; } main { width: 100%; padding: 0; } a { color: inherit; } h2, h3 { break-after: avoid; } }