:root{
  --brand:#1e5f8c;--brand2:#2f7fb5;--ink:#152430;--muted:#5b6b7c;--bg:#f4f7fa;--card:#fff;
  --line:#dfe8ef;--green:#1e7d43;--amber:#c77c1a;--red:#b3392e;--radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65}
a{color:var(--brand2)}
.wrap{max-width:900px;margin:0 auto;padding:0 20px}
header.site{background:#0f2f47;color:#fff;padding:14px 0}
header.site .wrap{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.logo{font-weight:800;font-size:19px;color:#fff;text-decoration:none}
.logo .tick{color:#6db3e0}
nav.top{margin-left:auto;display:flex;gap:18px;font-size:14px}
nav.top a{color:#bcd7ea;text-decoration:none}
.hero{padding:34px 0 6px}
h1{font-size:29px;margin:0 0 8px;color:#0f2f47}
.sub{color:var(--muted);max-width:720px;font-size:16px}
.badge-row{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 4px}
.badge{font-size:12.5px;background:#e6eff6;color:var(--brand);padding:3px 10px;border-radius:20px}
.grid{display:grid;grid-template-columns:1fr 1.1fr;gap:18px;margin-top:16px;align-items:start}
@media(max-width:760px){.grid{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 1px 4px rgba(20,60,90,.06)}
.card h2{margin:0 0 12px;font-size:18px;color:#0f2f47}
label{display:block;font-size:13px;font-weight:700;margin:12px 0 4px}
input,select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:9px;font:inherit;background:#fff;color:var(--ink)}
.primary{display:inline-block;background:var(--brand2);color:#fff;border:0;border-radius:9px;padding:12px 22px;font-size:15px;font-weight:700;cursor:pointer;margin-top:16px}
.primary:hover{background:var(--brand)}
.hint{font-size:13px;color:var(--muted)}
.big-answer{text-align:center;padding:6px 0 10px;border-bottom:1px solid var(--line)}
.big-answer .round{font-size:52px;font-weight:800;color:var(--brand)}
.big-answer .round span{display:block;font-size:14px;font-weight:600;color:var(--muted)}
.big-answer .sub{color:var(--muted);font-size:13px;margin-top:4px}
.stat-row{display:flex;gap:10px;margin:14px 0}
.stat{flex:1;text-align:center;background:#f2f7fb;border-radius:9px;padding:10px 6px}
.stat b{font-size:22px;color:#0f2f47;display:block}
.stat span{font-size:11.5px;color:var(--muted)}
.vel-note{font-size:13.5px;padding:8px 12px;border-radius:8px;font-weight:600}
.vel-note.ok{background:#e7f5ec;color:var(--green)}
.vel-note.warn{background:#fdf3e2;color:var(--amber)}
.vel-note.bad{background:#fdece9;color:var(--red)}
table.rect{width:100%;border-collapse:collapse;font-size:14px;margin-top:4px}
table.rect th,table.rect td{border:1px solid var(--line);padding:6px 10px;text-align:left}
table.rect th{background:#eef4f9}
.num{text-align:right}
section.seo{background:#fff;border-top:1px solid var(--line);margin-top:34px;padding:34px 0}
section.seo h2{color:#0f2f47;font-size:22px}
section.seo h3{color:var(--brand);font-size:17px;margin-top:22px}
section.seo p,section.seo li{font-size:15px;color:#33404d}
.faq dt{font-weight:700;margin-top:16px}
.faq dd{margin:4px 0 0}
footer.site{background:#0f2f47;color:#a9c6db;font-size:13px;padding:24px 0;margin-top:0}
footer.site a{color:#bcd7ea}
footer.site .disc{font-size:12px;color:#7ea7c4;margin-top:8px}
@media(max-width:480px){h1{font-size:23px}.big-answer .round{font-size:42px}}