:root{
  --navy:#0d2b52;--navy2:#123a6e;--accent:#ffc107;--bg:#f7f9fc;--card:#ffffff;
  --text:#1a2333;--muted:#5b6a80;--ok:#1a7f4e;--ng:#b02a37;--line:#dfe6f0;
  --radius:14px;--maxw:760px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.65;font-size:16px}
a{color:var(--navy2)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 18px}
header.site{background:var(--navy);color:#fff;padding:14px 0}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:10px}
.logo{font-weight:800;letter-spacing:.3px;color:#fff;text-decoration:none;font-size:1.05rem}
.logo span{color:var(--accent)}
nav.top a{color:#dfe8f5;text-decoration:none;font-size:.85rem;margin-left:14px}
nav.top a:hover{color:#fff}
.hero{background:linear-gradient(160deg,var(--navy) 0%,var(--navy2) 100%);color:#fff;padding:42px 0 48px;text-align:center}
.hero h1{font-size:1.7rem;line-height:1.35;margin-bottom:10px}
.hero p{color:#c9d6ea;max-width:560px;margin:0 auto}
.badge{display:inline-block;background:var(--accent);color:#332600;font-weight:700;font-size:.75rem;
  padding:4px 12px;border-radius:99px;margin-bottom:14px}
main{padding:30px 0 50px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;margin:16px 0;box-shadow:0 1px 3px rgba(13,43,82,.05)}
.card h2{font-size:1.15rem;margin-bottom:10px;color:var(--navy)}
.card h3{font-size:1rem;margin:14px 0 6px;color:var(--navy)}
.grid{display:grid;gap:16px}
@media(min-width:620px){.grid.cols2{grid-template-columns:1fr 1fr}}
.tool-link{display:block;text-decoration:none;color:inherit;transition:transform .12s}
.tool-link:hover{transform:translateY(-2px)}
.tool-link .em{font-size:1.6rem}
.tool-link p{color:var(--muted);font-size:.9rem;margin-top:4px}
label{display:block;font-weight:600;font-size:.9rem;margin:14px 0 6px}
input[type=number],select{width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;
  font-size:1.05rem;background:#fff;color:var(--text)}
input[type=number]:focus,select:focus{outline:2px solid var(--navy2)}
.seg{display:flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-top:6px}
.seg button{flex:1;padding:11px 8px;border:0;background:#fff;font-size:.9rem;cursor:pointer;color:var(--muted)}
.seg button.on{background:var(--navy);color:#fff;font-weight:700}
.btn{display:inline-block;background:var(--navy);color:#fff;border:0;border-radius:10px;
  padding:13px 26px;font-size:1.02rem;font-weight:700;cursor:pointer;text-decoration:none;margin-top:16px}
.btn:hover{background:var(--navy2)}
.btn.acc{background:var(--accent);color:#332600}
.result{border-left:5px solid var(--accent);background:#fffdf4;border-radius:8px;padding:16px;margin-top:18px}
.result .big{font-size:1.9rem;font-weight:800;color:var(--navy)}
.result small{color:var(--muted)}
.hint{font-size:.83rem;color:var(--muted);margin-top:6px}
.ok{color:var(--ok);font-weight:700}
.ng{color:var(--ng);font-weight:700}
ul.steps{margin:8px 0 0 0;padding-left:0;list-style:none;counter-reset:s}
ul.steps li{counter-increment:s;padding:9px 0 9px 40px;position:relative;border-bottom:1px dashed var(--line)}
ul.steps li:last-child{border-bottom:0}
ul.steps li::before{content:counter(s);position:absolute;left:0;top:8px;width:26px;height:26px;
  background:var(--navy);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:.85rem;font-weight:700}
table.simple{width:100%;border-collapse:collapse;font-size:.9rem;margin-top:8px}
table.simple th,table.simple td{border:1px solid var(--line);padding:8px 10px;text-align:left}
table.simple th{background:#eef3fa;color:var(--navy)}
.disclaimer{font-size:.78rem;color:var(--muted);border-top:1px solid var(--line);margin-top:26px;padding-top:14px}
footer.site{background:var(--navy);color:#b9c7dc;font-size:.8rem;padding:22px 0;margin-top:20px}
footer.site a{color:#dfe8f5}
.qbox{display:none}
.qbox.on{display:block}
.opt{display:block;width:100%;text-align:left;background:#fff;border:1px solid var(--line);
  border-radius:10px;padding:13px 15px;font-size:.98rem;margin:8px 0;cursor:pointer;color:var(--text)}
.opt:hover{border-color:var(--navy2);background:#f4f8ff}
.progress{height:6px;background:var(--line);border-radius:99px;margin:10px 0 18px;overflow:hidden}
.progress i{display:block;height:100%;background:var(--accent);transition:width .2s}
.reco{border:2px solid var(--accent);border-radius:var(--radius);padding:18px;margin-top:14px;background:#fffdf4}
.reco h3{margin-top:0;font-size:1.2rem}
.linkrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.linkrow a{flex:1;min-width:130px;text-align:center;text-decoration:none;border-radius:10px;
  padding:11px;font-weight:700;border:1.5px solid var(--navy);color:var(--navy)}
.linkrow a:hover{background:var(--navy);color:#fff}
@media(max-width:420px){.seg button{font-size:.78rem;padding:10px 4px;min-height:44px;line-height:1.3}}