*{box-sizing:border-box}body{margin:0;font:20px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#111;background:#fff}
a{color:#0040a0}a:focus,button:focus,input:focus,select:focus{outline:4px solid #ffbf00;outline-offset:2px}
header{background:#0b2545;color:#fff;padding:14px 20px}header a{color:#fff;text-decoration:none;font-weight:800;font-size:26px}
nav{margin-top:6px}nav a{font-size:18px;font-weight:600;margin-right:18px;text-decoration:underline}
main{max-width:860px;margin:0 auto;padding:20px}h1{font-size:34px;line-height:1.2}h2{font-size:26px;margin-top:36px}
.calc{border:3px solid #0b2545;border-radius:10px;padding:18px;background:#f4f7fb}
label{display:block;font-weight:700;margin-top:12px}input,select{font-size:22px;padding:8px;width:100%;max-width:360px;border:2px solid #333;border-radius:6px}
input[type=checkbox]{width:28px;height:28px;vertical-align:middle}
button{font-size:22px;font-weight:700;background:#0b2545;color:#fff;border:0;border-radius:8px;padding:12px 24px;margin-top:16px;cursor:pointer}
.out{margin-top:18px;font-size:24px;font-weight:700;background:#fff;border:3px solid #1a7f37;border-radius:8px;padding:14px}
table{border-collapse:collapse;width:100%}td,th{border:1px solid #999;padding:6px;text-align:left}
.ad-slot{min-height:90px;border:2px dashed #999;margin:28px 0;display:flex;align-items:center;justify-content:center;color:#555;font-size:16px}
code{background:#eee;padding:2px 6px;border-radius:4px}footer{border-top:2px solid #ddd;padding:20px;text-align:center;font-size:17px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;padding:0;list-style:none}.grid li a{display:block;border:3px solid #0b2545;border-radius:10px;padding:14px;font-weight:700;text-decoration:none;min-height:100%}