:root { color-scheme: light; font-family: system-ui, sans-serif; line-height: 1.55; color: #172b3a; background: #f5f7f9; }
* { box-sizing: border-box; }
body { margin: 0; }
header, main, footer, #notice { max-width: 64rem; margin-inline: auto; padding: 1.25rem; }
header { border-bottom: 1px solid #c7d1da; display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem; }
.brand { font-weight: 750; font-size: 1.3rem; }
nav { display: flex; flex-wrap: wrap; gap: .8rem; align-items: center; }
main { min-height: 65vh; }
footer { border-top: 1px solid #c7d1da; color: #425563; }
a { color: #07599b; text-underline-offset: .15em; overflow-wrap: anywhere; }
h1 { line-height: 1.25; overflow-wrap: anywhere; }
h2 { margin-top: 2rem; font-size: 1.25rem; }
button, input, textarea, select { font: inherit; }
button, input, select, textarea { border: 1px solid #728596; border-radius: .3rem; padding: .6rem .8rem; }
button { background: #07599b; color: white; cursor: pointer; min-height: 2.75rem; }
button:hover { background: #034374; }
button:disabled { opacity: .65; cursor: default; }
button + button { margin-left: .5rem; }
:focus-visible { outline: 3px solid #c65e00; outline-offset: 3px; }
main:focus { outline: none; }
form { max-width: 42rem; margin-block: 1.2rem; }
.field { margin-bottom: 1rem; }
label { display: block; font-weight: 600; }
input:not([type="checkbox"]), textarea, select { display: block; width: 100%; background: white; margin-top: .3rem; }
textarea { resize: vertical; }
select { margin-bottom: 1rem; }
input[type="checkbox"] { width: 1.25rem; height: 1.25rem; margin-right: .5rem; vertical-align: middle; }
.topics, .users { list-style: none; padding: 0; }
.topics li, .users li, article { background: white; padding: 1rem; margin-block: .8rem; border: 1px solid #c7d1da; border-radius: .4rem; }
.topics li { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.topics li a { font-weight: 650; }
.topics li p, .users li p { margin: .3rem 0; }
.topics button { flex-shrink: 0; }
.description { white-space: pre-wrap; overflow-wrap: anywhere; }
code { overflow-wrap: anywhere; }
#notice:empty { display: none; }
.error { background: #ffe9e8; color: #7d1710; border-left: 4px solid #a7251d; }
.success { background: #e6f4ea; border-left: 4px solid #247238; }
.skip-link { position: absolute; top: -10rem; left: 1rem; padding: .6rem; background: white; }
.skip-link:focus { top: .5rem; }
@media (max-width: 38rem) { .topics li { align-items: flex-start; flex-direction: column; } header { gap: .75rem; } }