*{box-sizing:border-box}body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#1d2433;background:#fafbfc}
a{color:#0b6bcb}main{max-width:960px;margin:auto;padding:1rem 1.25rem 3rem}
.sponsorbar{background:#10213a;color:#cfd8e6;font-size:.85rem;padding:.4rem 1rem;display:flex;gap:.6rem;flex-wrap:wrap;align-items:center;justify-content:center}.sponsorbar a{color:#9fd0ff}
.ph{border:1px dashed #7f93b0;padding:.1rem .6rem;border-radius:4px}
header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;max-width:960px;margin:auto;padding:1rem 1.25rem}
.brand{font-size:1.4rem;text-decoration:none;color:#10213a}.brand b{color:#0b6bcb}nav a{margin-left:1rem;text-decoration:none}
.hero{padding:2rem 0}.hero h1{font-size:clamp(1.8rem,5vw,2.8rem);line-height:1.15;margin:.2rem 0}
.btn{display:inline-block;background:#0b6bcb;color:#fff;padding:.6rem 1.1rem;border-radius:8px;text-decoration:none;border:0;font:inherit;cursor:pointer;margin:.2rem 0}.btn.alt{background:#e7eef7;color:#10213a}
.grid,.spons{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1rem}
.card,.spon{background:#fff;border:1px solid #e3e8ef;border-radius:10px;padding:1rem;text-decoration:none;color:inherit}.card:hover{border-color:#0b6bcb}.card h3{margin:.1rem 0}
.spon{border-style:dashed;text-align:center;font-weight:600;color:#6b7a90}.spon small{display:block;font-weight:400}
.note{background:#fff8e6;border-left:4px solid #f0b400;padding:.5rem .8rem;font-size:.92rem}
.book{float:right;max-width:280px;margin:0 0 1rem 1rem;background:#eef5ff;padding:.8rem 1rem;border-radius:10px}@media(max-width:640px){.book{float:none;max-width:none;margin:0 0 1rem}nav a{margin:0 1rem 0 0}}
.crumb{font-size:.85rem}.calc{display:grid;gap:.8rem;max-width:480px}.calc label{display:grid;font-weight:600;font-size:.95rem}
input{font:inherit;padding:.5rem;border:1px solid #c8d1dd;border-radius:6px;margin-top:.2rem}
.out{margin:1.2rem 0;background:#fff;border:1px solid #e3e8ef;border-radius:10px;padding:1rem;max-width:480px}
footer{border-top:1px solid #e3e8ef;color:#5a677a;font-size:.85rem;max-width:960px;margin:auto;padding:1rem 1.25rem}