:root{--bg:#ffffff;--ink:#12303a;--muted:#4d6a72;--teal:#082a30;--coral:#d64a33;--soft:#eef5f6;--line:#cfdde0}
@media (prefers-color-scheme:dark){:root{--bg:#082a30;--ink:#e6f0f1;--muted:#a9c4c8;--teal:#06202a;--coral:#ff8a75;--soft:#0d3a42;--line:#2f6a73}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.0625rem/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
header.site{background:var(--teal);color:#fff;padding:14px 16px}
header.site .in{max-width:46rem;margin:0 auto;display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between}
.mark{font-weight:800;font-size:1.35rem;letter-spacing:-.02em;color:#fff;text-decoration:none}.mark span{color:#ff7a63}
nav a{color:#cfe3e6;text-decoration:none;margin-right:16px;font-size:.95rem}nav a:hover,nav a:focus{color:#fff;text-decoration:underline}
main{max-width:46rem;margin:0 auto;padding:28px 16px 48px}
h1{font-size:1.9rem;line-height:1.2;margin:.2em 0 .3em}h2{font-size:1.3rem;margin:2em 0 .4em;line-height:1.3}h3{font-size:1.05rem;margin:1.4em 0 .3em}
p,li{max-width:42rem}.meta{color:var(--muted);font-size:.95rem}
a{color:var(--coral);text-underline-offset:2px}a:focus-visible,nav a:focus-visible{outline:3px solid #ff7a63;outline-offset:2px}
.summary{background:var(--soft);border-left:4px solid var(--coral);padding:12px 18px;border-radius:6px;margin:18px 0}
.summary ul{margin:.4em 0 .2em;padding-left:1.2em}
table{border-collapse:collapse;width:100%;font-size:.97rem;margin:12px 0}th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}th{background:var(--soft)}
.tablewrap{overflow-x:auto}
footer.site{border-top:1px solid var(--line);padding:22px 16px;color:var(--muted);font-size:.92rem}
footer.site .in{max-width:46rem;margin:0 auto}footer.site a{color:var(--muted)}
.btn{display:inline-block;background:var(--coral);color:#fff;padding:11px 20px;border-radius:8px;font-weight:700;text-decoration:none;margin:6px 10px 6px 0}
@media (prefers-color-scheme:dark){.btn{color:#082a30}}
.cards{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));margin:18px 0}.card{border:1px solid var(--line);border-radius:10px;padding:14px 16px;background:var(--soft)}.card h3{margin:.1em 0 .2em}