:root{--bg:#fbfaf7;--ink:#1f2a2e;--muted:#5d6b70;--line:#e3e0d8;--accent:#2f6f5e;--accent-2:#e9f2ee;--card:#fff;--warn:#fff7e6;--warn-line:#f0dcb0}
@media (prefers-color-scheme:dark){:root{--bg:#141a1c;--ink:#e8ecea;--muted:#a3b0ad;--line:#2b3538;--accent:#7cc4ad;--accent-2:#1d2b28;--card:#1a2124;--warn:#2a2416;--warn-line:#5a4a25}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:18px/1.65 Georgia,"Iowan Old Style","Times New Roman",serif}
a{color:var(--accent)}
.wrap{max-width:760px;margin:0 auto;padding:0 18px}
header.site{border-bottom:1px solid var(--line);background:var(--card)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap}
.logo{font:700 20px/1.2 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.logo span{color:var(--accent)}
nav.top{display:flex;flex-wrap:wrap;gap:6px 16px;font:15px/1.3 system-ui,-apple-system,"Segoe UI",sans-serif}
nav.top a{white-space:nowrap}
nav.top a{color:var(--muted);text-decoration:none}
nav.top a:hover{color:var(--accent)}
main{padding:28px 0 48px}
h1,h2,h3{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.25;letter-spacing:-.01em}
h1{font-size:34px;margin:.2em 0 .4em}
h2{font-size:24px;margin:1.8em 0 .5em}
h3{font-size:19px;margin:1.4em 0 .4em}
.meta{font:14px/1.4 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--muted);margin-bottom:22px}
.answer{background:var(--accent-2);border-left:4px solid var(--accent);padding:14px 18px;border-radius:6px;margin:18px 0 26px}
.answer p{margin:0}
.tip{background:var(--card);border:1px solid var(--line);padding:12px 16px;border-radius:6px;margin:18px 0}
.disclosure{background:var(--warn);border:1px solid var(--warn-line);padding:10px 14px;border-radius:6px;font:15px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif;margin:0 0 20px}
table{width:100%;border-collapse:collapse;margin:18px 0;font:15px/1.45 system-ui,-apple-system,"Segoe UI",sans-serif;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{background:var(--accent-2)}
blockquote{border-left:3px solid var(--line);margin:18px 0;padding:2px 16px;color:var(--muted)}
.cards{display:grid;grid-template-columns:1fr;gap:14px;margin:18px 0}
@media (min-width:640px){.cards{grid-template-columns:1fr 1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:16px 18px;text-decoration:none;color:var(--ink);display:block}
.card strong{display:block;font:600 18px/1.3 system-ui,-apple-system,"Segoe UI",sans-serif;margin-bottom:6px;color:var(--ink)}
.card span{font-size:15px;color:var(--muted)}
.hero{padding:10px 0 6px}
.hero p{font-size:20px;color:var(--muted);margin-top:0}
.related{border-top:1px solid var(--line);margin-top:36px;padding-top:8px}
footer.site{border-top:1px solid var(--line);background:var(--card);font:14px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--muted)}
footer.site .wrap{padding-top:22px;padding-bottom:28px}
footer.site a{color:var(--muted)}
.crumbs{font:14px/1.4 system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--muted)}
.crumbs a{color:var(--muted)}
@media (max-width:520px){body{font-size:17px}h1{font-size:28px}h2{font-size:22px}}