:root{--blue:#0b2a5b;--blue2:#123e85;--red:#d62b3a;--bg:#f4f6fa;--card:#fff;--text:#1b2433;--muted:#5b6678;--ok:#0f8a5f;--okbg:#e6f6ef;--line:#e3e7ef}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.55;font-size:16px}
a{color:var(--blue2)}.wrap{max-width:1040px;margin:auto;padding:0 1rem}
.top{background:var(--blue);color:#fff;position:sticky;top:0;z-index:5}.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.7rem 1rem;flex-wrap:wrap}
.logo{color:#fff;text-decoration:none;font-weight:800;font-size:1.15rem;letter-spacing:-.02em}.logo span{color:#ffb3ba}
.top nav{display:flex;gap:.2rem;flex-wrap:wrap}.top nav a{color:#dfe6f5;text-decoration:none;font-size:.9rem;padding:.35rem .6rem;border-radius:6px}.top nav a.on,.top nav a:hover{background:rgba(255,255,255,.14);color:#fff}
.hero{background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff;padding:2.2rem 0 4.5rem}.hero h1{margin:0 0 .4rem;font-size:clamp(1.6rem,4.5vw,2.4rem);line-height:1.15;letter-spacing:-.02em}.hero p{margin:0;color:#d6def0;max-width:620px}
.pagehead{padding:1.6rem 0 .4rem}.pagehead h1{margin:0;font-size:1.6rem;color:var(--blue)}
.card{background:var(--card);border-radius:14px;box-shadow:0 4px 18px rgba(11,42,91,.08);padding:1.2rem;margin:1rem 0;border:1px solid var(--line)}
.hero+.wrap .card:first-child{margin-top:-3.2rem}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:.9rem}
label{display:block;font-size:.85rem;font-weight:600;color:var(--muted)}label small{font-weight:400;display:block}
input{width:100%;margin-top:.25rem;padding:.65rem .7rem;border:1px solid #cfd6e3;border-radius:8px;font-size:1rem;background:#fff}input:focus{outline:2px solid var(--blue2);border-color:transparent}
.dims{display:flex;gap:.4rem}
button{background:var(--red);color:#fff;border:0;border-radius:10px;padding:.8rem 1.4rem;font-size:1rem;font-weight:700;cursor:pointer;margin-top:1rem;width:100%}@media(min-width:700px){button{width:auto}}
.result{border-left:6px solid var(--ok);background:var(--okbg)}.result .k{font-size:.8rem;font-weight:700;color:var(--ok);text-transform:uppercase;letter-spacing:.05em}.result .v{font-size:1.9rem;font-weight:800;color:var(--blue)}.result .s{font-weight:600}
table{width:100%;border-collapse:collapse;font-size:.92rem}th{background:#eef2f9;color:var(--blue);text-align:left;font-size:.8rem;text-transform:uppercase;letter-spacing:.03em}td,th{padding:.6rem .55rem;border-bottom:1px solid var(--line);vertical-align:top}tr.best td{background:var(--okbg);font-weight:700}td small{color:var(--muted)}
@media(max-width:700px){table.rt thead{display:none}table.rt tr{display:block;border:1px solid var(--line);border-radius:10px;margin:.6rem 0;padding:.4rem .6rem;background:#fff}table.rt td{display:flex;justify-content:space-between;gap:1rem;border:0;padding:.3rem 0;text-align:right}table.rt td::before{content:attr(data-l);font-weight:700;color:var(--muted);text-align:left;flex:0 0 40%}table.rt tr.best{border:2px solid var(--ok)}}
.warn{background:#fff8e1;border-left:4px solid #e0a800;padding:.8rem 1rem;border-radius:8px;font-size:.88rem}
.ex{background:#fde3e6;color:#a01e2b;padding:.1rem .45rem;border-radius:999px;font-size:.72rem;font-weight:700}
.muted{color:var(--muted);font-size:.85rem}
footer{background:var(--blue);color:#c9d3e8;margin-top:2.5rem;padding:1.6rem 0;font-size:.82rem}footer a{color:#fff}
select{width:100%;margin-top:.25rem;padding:.65rem .7rem;border:1px solid #cfd6e3;border-radius:8px;font-size:1rem;background:#fff}details.adv{margin-top:1rem;border-top:1px solid var(--line);padding-top:.6rem}details.adv summary{cursor:pointer;font-weight:700;color:var(--blue2);margin-bottom:.6rem}