*{box-sizing:border-box}body{margin:0;font:17px/1.65 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#1d2a33;background:#f6f9fb}
.wrap{max-width:900px;margin:0 auto;padding:0 18px}a{color:#0a6c8f}
.top{background:#0b4f6c;color:#fff}.top .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;padding:10px 18px}
.brand{color:#fff;font-weight:700;text-decoration:none;font-size:1.15rem}.top nav{display:flex;flex-wrap:wrap;gap:4px 14px}.top nav a{color:#d8f1fb;text-decoration:none;font-size:.95rem}
.menu{display:none;background:none;border:0;color:#fff;font-size:1.5rem}
@media(max-width:700px){.menu{display:block}.top nav{display:none;width:100%;flex-direction:column;padding:8px 0}.nav-open .top nav{display:flex}}
main{background:#fff;padding:20px 22px 30px;margin:18px auto;border-radius:10px;box-shadow:0 1px 4px rgba(0,0,0,.06)}
h1{font-size:1.9rem;line-height:1.25;color:#0b4f6c}h2{color:#0b4f6c;margin-top:1.8em}
.calc{background:#eef7fb;border:1px solid #cfe6ef;border-radius:10px;padding:18px;margin:18px 0}
.calc label{display:block;font-weight:600;margin:10px 0 4px}.calc input,.calc select{width:100%;padding:9px;font-size:1rem;border:1px solid #9cc3d3;border-radius:6px;background:#fff}
.calc button{margin-top:14px;background:#0b8a5f;color:#fff;border:0;padding:11px 20px;font-size:1rem;border-radius:6px;cursor:pointer}
.result{margin-top:14px;font-size:1.1rem;font-weight:600;background:#fff;padding:12px;border-radius:6px;border-left:4px solid #0b8a5f;min-height:1em}
.result:empty{display:none}.note{font-size:.9rem;color:#4a5d68}
table{border-collapse:collapse;width:100%;margin:12px 0;font-size:.95rem}th,td{border:1px solid #d5e2e8;padding:7px;text-align:left}th{background:#eef7fb}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}.cards a{display:block;padding:14px;border:1px solid #cfe6ef;border-radius:8px;text-decoration:none;background:#f9fdff}.cards a strong{display:block;color:#0b4f6c}
.cards a span{color:#4a5d68;font-size:.92rem}footer{color:#4a5d68;font-size:.9rem;padding:10px 0 30px}