*,*::before,*::after{box-sizing:border-box}
:root{--navy:#0b2545;--teal:#0f8b8d;--teal-d:#0b6e70;--ink:#1c2b3a;--mute:#52637a;--line:#dfe7ec;--soft:#f3f8f9;--white:#fff}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--white)}
img{max-width:100%;height:auto;display:block}
main img{border-radius:12px}
a{color:var(--teal-d)}a:hover{color:var(--navy)}
h1,h2,h3{color:var(--navy);line-height:1.25;margin:0 0 .6em}
h1{font-size:clamp(1.9rem,4.5vw,2.9rem);letter-spacing:-.01em}
h2{font-size:clamp(1.45rem,3vw,1.95rem)}
h3{font-size:1.15rem}
p{margin:0 0 1em}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 20px}
.narrow{max-width:780px}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#fff;padding:8px 12px;z-index:9}
.site-header{border-bottom:1px solid var(--line);background:#fff}
.site-header .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:8px 24px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.3rem;color:var(--navy);text-decoration:none}
.brand img{width:32px;height:32px}
.nav{display:flex;flex-wrap:wrap;gap:4px 18px;margin-left:auto;align-items:center}
.nav a{color:var(--ink);text-decoration:none;padding:6px 0;font-size:.97rem}
.nav a:hover,.nav a[aria-current=page]{color:var(--teal-d)}
.btn{display:inline-block;background:var(--teal);color:#fff;text-decoration:none;font-weight:600;padding:11px 22px;border-radius:6px;border:1px solid var(--teal);cursor:pointer;font-size:1rem;font-family:inherit}
.btn:hover{background:var(--teal-d);color:#fff}
.btn.alt{background:#fff;color:var(--navy);border-color:var(--navy)}
.btn.alt:hover{background:var(--navy);color:#fff}
.nav a.btn{color:#fff;padding:7px 16px}
section{padding:64px 0}
.soft{background:var(--soft)}
.hero{padding:56px 0 64px}
.split{display:grid;gap:40px;align-items:center}
.lead{font-size:1.15rem;color:var(--mute)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.grid{display:grid;gap:22px;margin-top:28px}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px}
.card p:last-child{margin-bottom:0}
.steps{counter-reset:s;list-style:none;padding:0;margin:24px 0 0}
.steps li{counter-increment:s;position:relative;padding:0 0 18px 52px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:36px;height:36px;border-radius:50%;background:var(--navy);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center}
.crumbs{font-size:.9rem;color:var(--mute);padding:18px 0 0}
.crumbs a{color:var(--mute)}
.page-head{padding:28px 0 8px}
.prose h2{margin-top:1.6em}
.prose ul,.prose ol{padding-left:1.2em}
.prose li{margin-bottom:.4em}
details{border:1px solid var(--line);border-radius:8px;padding:14px 18px;margin-bottom:12px;background:#fff}
summary{font-weight:600;color:var(--navy);cursor:pointer}
details p{margin:.8em 0 0}
form.box{background:#fff;border:1px solid var(--line);border-radius:10px;padding:26px;max-width:520px}
label{display:block;font-weight:600;margin:0 0 6px;color:var(--navy)}
input,textarea{width:100%;padding:11px 12px;border:1px solid #b9c6d0;border-radius:6px;font:inherit;margin-bottom:16px;background:#fff;color:var(--ink)}
input:focus,textarea:focus,a:focus,summary:focus,.btn:focus{outline:2px solid var(--teal);outline-offset:2px}
.todo{display:inline-block;border:1px dashed var(--teal);color:var(--teal-d);background:#eef8f8;border-radius:4px;padding:1px 8px;font-size:.88rem}
.note{border-left:4px solid var(--teal);background:var(--soft);padding:14px 18px;border-radius:0 8px 8px 0;margin:0 0 1.2em}
.calc{display:flex;flex-wrap:wrap;gap:12px;align-items:end;margin-top:14px}
.calc input{margin:0;max-width:220px}
#calc-out{font-weight:600;color:var(--navy);margin-top:14px;min-height:1.6em}
.site-footer{background:var(--navy);color:#c9d6e3;padding:48px 0 28px;font-size:.95rem}
.site-footer a{color:#fff;text-decoration:none}.site-footer a:hover{text-decoration:underline}
.site-footer h2{color:#fff;font-size:1rem;margin-bottom:.8em}
.site-footer ul{list-style:none;margin:0;padding:0}.site-footer li{margin-bottom:6px}
.fgrid{display:grid;gap:28px}
.copy{border-top:1px solid #24406a;margin-top:32px;padding-top:18px;font-size:.88rem}
@media(min-width:640px){.grid{grid-template-columns:repeat(2,1fr)}.fgrid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:900px){.split{grid-template-columns:1.05fr .95fr}.split.rev>:first-child{order:2}.grid.three{grid-template-columns:repeat(3,1fr)}.fgrid{grid-template-columns:1.4fr 1fr 1fr 1fr}section{padding:80px 0}}
@media(max-width:639px){.nav{margin-left:0;width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}