:root{--bg:#fbfaf7;--fg:#1d2327;--muted:#5b6670;--accent:#0f5c63;--accent-2:#e9f2f2;--card:#fff;--line:#e3e1db;--btn:#c45500;--btn-fg:#fff;--max:68rem}
@media (prefers-color-scheme:dark){:root{--bg:#121518;--fg:#e8eaec;--muted:#a3adb5;--accent:#6cc3c9;--accent-2:#1b2a2c;--card:#1a1e22;--line:#2b3136;--btn:#f08a24;--btn-fg:#111}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--accent)}
a:hover{text-decoration-thickness:2px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 1.25rem}
.skip{position:absolute;left:-999px}.skip:focus{left:1rem;top:1rem;background:var(--card);padding:.5rem;z-index:9}
header.site{border-bottom:1px solid var(--line);background:var(--card)}
header.site .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem 1.5rem;padding-top:.9rem;padding-bottom:.9rem}
.brand{font-weight:700;font-size:1.15rem;color:var(--fg);text-decoration:none;letter-spacing:.01em}
nav a{margin-left:1.1rem;text-decoration:none;color:var(--muted);font-weight:500}nav a:first-child{margin-left:0}
nav a:hover,nav a[aria-current]{color:var(--accent)}
main{padding:2.5rem 0 3rem}
h1,h2,h3{line-height:1.25;letter-spacing:-.01em}
h1{font-size:clamp(1.8rem,4vw,2.5rem);margin:.2rem 0 1rem}
h2{font-size:1.45rem;margin:2.2rem 0 .7rem}
h3{font-size:1.1rem;margin:0 0 .3rem}
.lede{font-size:1.15rem;color:var(--muted);max-width:44rem}
.hero{padding:1rem 0 1.5rem}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(16rem,1fr));gap:1rem;margin-top:1rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1.1rem 1.1rem 1rem;display:flex;flex-direction:column}
.card .cover{background:var(--accent-2);border-left:6px solid var(--accent);border-radius:6px;padding:1rem;margin-bottom:.9rem;min-height:7.5rem;display:flex;flex-direction:column;justify-content:center}
.card .cover strong{font-size:1.08rem;line-height:1.3}
.card .cover span{font-size:.82rem;color:var(--muted);margin-top:.35rem;line-height:1.35}
.card p{margin:.1rem 0 .9rem;color:var(--muted);font-size:.95rem;flex:1}
.card .links{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}
.btn{display:inline-block;background:var(--btn);color:var(--btn-fg);text-decoration:none;font-weight:600;padding:.55rem 1rem;border-radius:8px;font-size:.95rem}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.article{max-width:44rem}
.article table{border-collapse:collapse;width:100%;margin:1rem 0;font-size:.95rem;display:block;overflow-x:auto}
.article th,.article td{border:1px solid var(--line);padding:.5rem .65rem;text-align:left;vertical-align:top}
.article th{background:var(--accent-2)}
.note{background:var(--accent-2);border-radius:10px;padding:.8rem 1rem;font-size:.95rem;margin:1rem 0}
.answer{border-left:4px solid var(--accent);padding:.2rem 0 .2rem 1rem;margin:1rem 0 1.4rem}
.meta{color:var(--muted);font-size:.9rem}
.faq dt{font-weight:700;margin-top:1rem}.faq dd{margin:.25rem 0 0}
.bookbox{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1.2rem;margin:2rem 0}
.sources{font-size:.9rem}.sources li{margin:.25rem 0}
.crumbs{font-size:.9rem;color:var(--muted);margin-bottom:.5rem}.crumbs a{color:var(--muted)}
footer.site{border-top:1px solid var(--line);color:var(--muted);font-size:.9rem;padding:1.5rem 0 2rem}
footer.site p{margin:.3rem 0}
.flush{margin-top:0}
.guides{list-style:none;padding:0}.guides li{margin:0 0 1rem}