:root{
  --ink:#0f2233;--ink2:#41576b;--line:#e2eaf0;--bg:#ffffff;--soft:#f4f8fb;
  --brand:#0e7c86;--brand-d:#0a5b63;--accent:#2f9e44;--radius:14px;
}
*{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;-webkit-font-smoothing:antialiased}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
.wrap.wide{max-width:1080px}
a{color:var(--brand-d)}
h1,h2,h3{line-height:1.25;color:var(--ink)}
h1{font-size:clamp(1.7rem,4vw,2.5rem);letter-spacing:-.02em;margin:.2em 0 .3em}
h2{font-size:1.4rem;margin:1.8em 0 .5em}
h3{font-size:1.1rem;margin:1.4em 0 .4em}
p{margin:0 0 1rem}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.74rem;font-weight:700;color:var(--brand)}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:.72rem 1.15rem;border-radius:999px;text-decoration:none;font-weight:700;font-size:.95rem}
.btn:hover{background:var(--brand-d)}
.btn.ghost{background:transparent;color:var(--brand-d);border:1.5px solid var(--brand)}
header.site{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.site .bar{display:flex;align-items:center;justify-content:space-between;height:62px;max-width:1080px;margin:0 auto;padding:0 20px}
.logo{font-weight:800;letter-spacing:-.02em;color:var(--ink);text-decoration:none;font-size:1.05rem}
.logo span{color:var(--brand)}
nav.top a{margin-left:20px;text-decoration:none;color:var(--ink2);font-weight:600;font-size:.94rem}
nav.top .btn{color:#fff;margin-left:20px}
.crumbs{font-size:.85rem;color:var(--ink2);padding:16px 0 0}
.crumbs a{color:var(--ink2)}
.byline{color:var(--ink2);font-size:.9rem;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:22px}
article{padding:6px 0 30px}
article ul{padding-left:1.1rem}
article li{margin-bottom:.4rem}
.callout{background:var(--soft);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:10px;padding:16px 18px;margin:20px 0}
.callout p:last-child{margin-bottom:0}
.cta-card{background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff;border-radius:18px;padding:28px;margin:30px 0}
.cta-card h3{color:#fff;margin-top:0}
.cta-card p{color:#dff1f2}
.cta-card a.btn{background:#fff;color:var(--brand-d)}
details.faq{background:#fff;border:1px solid var(--line);border-radius:12px;padding:2px 18px;margin-bottom:12px}
details.faq summary{cursor:pointer;font-weight:700;padding:14px 0;list-style:none}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";float:right;color:var(--brand);font-weight:700}
details.faq[open] summary::after{content:"–"}
.related{background:var(--soft);border-top:1px solid var(--line);padding:26px 0;margin-top:20px}
.related a{display:inline-block;margin:4px 12px 4px 0;font-weight:600}
footer.site{border-top:1px solid var(--line);padding:30px 0;color:var(--ink2);font-size:.88rem}
footer.site a{color:var(--ink2);text-decoration:none;margin-right:18px}
.src{font-size:.82rem;color:var(--ink2)}
@media(max-width:820px){nav.top a:not(.btn){display:none}}