:root{--navy:#1f3a5f;--teal:#2a9d8f;--bg:#f4f8fb;--ink:#1f2933;--muted:#5b6673;--line:#d5dde5;--yellow:#fff9e6}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.6;font-size:17px}
a{color:var(--teal)}
header.site{background:var(--navy);color:#fff}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:14px 20px}
header.site a{color:#fff;text-decoration:none}
.brand{font-weight:800;font-size:20px;letter-spacing:-.01em}
.brand span{color:#7fdccf}
nav a{margin-left:16px;font-size:15px;opacity:.9}
.wrap{max-width:980px;margin:0 auto;padding:0 20px}
.hero{background:var(--bg);border-bottom:1px solid var(--line);padding:36px 0 28px}
h1{font-size:clamp(28px,4.5vw,42px);line-height:1.15;color:var(--navy);margin:0 0 10px;letter-spacing:-.02em}
h2{color:var(--navy);font-size:26px;margin:36px 0 10px;line-height:1.25}
h3{color:var(--navy);font-size:19px;margin:22px 0 6px}
.lede{font-size:19px;color:var(--muted);max-width:720px;margin:0}
.calc{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:28px 0}
@media(max-width:760px){.calc{grid-template-columns:1fr}nav a{margin-left:10px}}
.panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:0 6px 20px rgba(31,58,95,.06)}
.panel h2{margin-top:0;font-size:20px}
label{display:block;font-weight:600;font-size:15px;margin:12px 0 4px}
label small{font-weight:400;color:var(--muted)}
input,select{width:100%;padding:10px 12px;font-size:17px;border:1px solid var(--line);border-radius:9px;background:var(--yellow);color:var(--ink)}
input:focus,select:focus{outline:3px solid rgba(42,157,143,.35);border-color:var(--teal)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.result{background:var(--navy);color:#fff}
.result h2{color:#fff}
.big{font-size:44px;font-weight:800;line-height:1.1;margin:6px 0 2px}
.biglabel{text-transform:uppercase;letter-spacing:.06em;font-size:13px;opacity:.8;font-weight:700}
.result dl{display:grid;grid-template-columns:1fr auto;gap:6px 12px;margin:18px 0 0;font-size:15px}
.result dt{opacity:.85}.result dd{margin:0;font-weight:700;text-align:right}
.note{font-size:14px;color:var(--muted)}
.result .note{color:#c9d6e3}
.cta{background:linear-gradient(135deg,#e8f6f4,#eef4f8);border:1px solid #bfe3dd;border-radius:14px;padding:22px;margin:32px 0}
.cta h2{margin-top:0;font-size:22px}
.btn{display:inline-block;background:var(--teal);color:#fff;text-decoration:none;font-weight:700;padding:12px 20px;border-radius:999px;margin:6px 8px 0 0}
.btn.alt{background:var(--navy)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px;margin:24px 0}
.card{border:1px solid var(--line);border-radius:14px;padding:18px;background:#fff;display:flex;flex-direction:column}
.card h3{margin-top:0}.card p{flex:1;margin:0 0 10px;color:var(--muted);font-size:15px}
.price{font-weight:800;color:var(--navy)}
details{border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:10px 0;background:#fff}
summary{font-weight:700;cursor:pointer;color:var(--navy)}
footer{background:var(--bg);border-top:1px solid var(--line);margin-top:48px;padding:24px 0;font-size:14px;color:var(--muted)}
.formula{background:var(--bg);border-left:4px solid var(--teal);padding:10px 14px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:15px;overflow-x:auto}
table.crew{width:100%;border-collapse:collapse;font-size:15px}
table.crew th{text-align:left;font-size:13px;color:var(--muted);padding:4px}
table.crew td{padding:3px}
table.crew input{padding:7px 8px;font-size:15px}
.small-btn{background:none;border:1px dashed var(--teal);color:var(--teal);padding:6px 12px;border-radius:8px;font-weight:600;cursor:pointer;margin-top:8px;font-size:14px}