:root{--ink:#0f172a;--muted:#475569;--line:#e2e8f0;--bg:#ffffff;--soft:#f8fafc;
--brand:#0d7a6f;--brand-dark:#0a5f56;--brand-soft:#e6f4f2;--warn-bg:#fff7ed;--warn-line:#fed7aa;--warn-ink:#9a3412;--accent:#f59e0b}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
color:var(--ink);background:var(--bg);line-height:1.65;font-size:18px;-webkit-font-smoothing:antialiased}
a{color:var(--brand-dark);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
header.site{border-bottom:1px solid var(--line);background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(8px);position:sticky;top:0;z-index:50}
.nav{max-width:1080px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.brand{font-weight:800;font-size:19px;color:var(--ink);display:flex;align-items:center;gap:8px;white-space:nowrap}
.brand .dot{width:12px;height:12px;border-radius:50%;background:var(--brand);display:inline-block}
.nav .links{display:flex;gap:16px;flex-wrap:wrap;margin-left:auto}
.nav .links a{color:var(--muted);font-size:15px;font-weight:600}
.nav .links a:hover{color:var(--brand-dark);text-decoration:none}
main{padding:36px 0 10px}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:14px}
.crumbs a{color:var(--muted)}
h1{font-size:34px;line-height:1.2;margin:.2em 0 .35em;letter-spacing:-.01em}
h2{font-size:25px;line-height:1.25;margin:1.7em 0 .5em;letter-spacing:-.01em}
h3{font-size:20px;margin:1.4em 0 .4em}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.2em;padding-left:1.3em}
li{margin:.35em 0}
.byline{color:var(--muted);font-size:15px;margin:0 0 26px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.lede{font-size:20px;color:#1e293b}
.callout{background:var(--brand-soft);border:1px solid #c7e7e2;border-radius:12px;padding:16px 18px;margin:1.4em 0}
.callout strong{color:var(--brand-dark)}
.warn{background:var(--warn-bg);border:1px solid var(--warn-line);border-radius:12px;padding:16px 18px;margin:1.4em 0;color:var(--warn-ink)}
.warn strong{color:var(--warn-ink)}
table{width:100%;border-collapse:collapse;margin:1.3em 0;font-size:16px}
th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
th{background:var(--soft);font-weight:700}
.faq h3{margin-bottom:.2em}
.disclaimer{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin:2.2em 0 0;font-size:15px;color:var(--muted)}
.related{margin:2.4em 0 0;padding-top:22px;border-top:1px solid var(--line)}
.related h2{font-size:20px;margin:0 0 .6em}
.related ul{list-style:none;padding:0;display:grid;gap:10px}
.related a{font-weight:600}
.hero{background:linear-gradient(180deg,var(--brand-soft),#fff);border-bottom:1px solid var(--line)}
.hero .wrap{max-width:820px;padding-top:44px;padding-bottom:20px}
.hero h1{font-size:40px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin:1.6em 0}
.card{border:1px solid var(--line);border-radius:14px;padding:18px 18px 16px;background:#fff;transition:box-shadow .15s,transform .15s}
.card:hover{box-shadow:0 8px 24px rgba(15,23,42,.08);transform:translateY(-2px)}
.card a{font-weight:700;font-size:17px}
.card p{font-size:15px;color:var(--muted);margin:.4em 0 0}
.btn{display:inline-block;background:var(--brand);color:#fff;font-weight:700;padding:12px 20px;border-radius:10px;margin:.4em 0}
.btn:hover{background:var(--brand-dark);text-decoration:none;color:#fff}
footer.site{border-top:1px solid var(--line);background:var(--soft);margin-top:48px;padding:30px 0;color:var(--muted);font-size:14px}
footer.site .wrap{max-width:1080px}
footer.site .frow{display:flex;gap:22px;flex-wrap:wrap;margin-bottom:14px}
footer.site a{color:var(--muted)}
@media(max-width:640px){body{font-size:17px}h1{font-size:28px}.hero h1{font-size:30px}h2{font-size:22px}}