*{box-sizing:border-box}body{margin:0;background:#f1f5f8;color:#233447;font:16px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}.top{background:#fff;box-shadow:0 1px 7px #172e4412;padding:16px max(20px,calc((100% - 1120px)/2));display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.brand{font-weight:800;color:#245b83;text-decoration:none}.top nav{display:flex;gap:16px;flex-wrap:wrap}.top nav a{color:#245b83;text-decoration:none}.wrap{max-width:1120px;margin:0 auto;padding:24px 18px 70px}.hero{padding:25px 0}h1{font-size:clamp(1.6rem,4vw,2.3rem);margin:0 0 8px}h2{font-size:1.3rem}.hero p{color:#596b7b;margin:0}.filter,.panel{background:white;border-radius:16px;padding:22px;margin:18px 0;box-shadow:0 2px 14px #223a5010}.filter{display:flex;gap:14px;align-items:center;flex-wrap:wrap}.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(235px,1fr));gap:20px}.tile{background:white;border-radius:14px;overflow:hidden;box-shadow:0 2px 14px #223a5014}.tile img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}.tile-body{padding:14px}.tile h2,.tile h3{font-size:1.1rem;margin:8px 0}.tile p{color:#526575;overflow-wrap:anywhere}.tag{display:inline-block;border-radius:30px;padding:3px 10px;background:#e4f0f8;color:#22597e;font-size:.8rem;font-weight:700}.narrow{max-width:480px;margin:60px auto}label{display:block;font-weight:650;margin:10px 0}input,select,textarea{font:inherit;display:block;width:100%;padding:12px;border:1px solid #b9c8d5;border-radius:9px;background:#fff;margin-top:5px}button{font:inherit;font-weight:700;background:#245b83;color:#fff;border:0;border-radius:10px;padding:13px 19px;cursor:pointer;min-height:46px}button:hover{background:#174664}.danger{background:#a33535}.danger:hover{background:#812929}.hint{color:#617180;font-size:.9rem}.error,.success{padding:12px;border-radius:9px;background:#fff0f0;color:#8c2929}.success{background:#e8f6ed;color:#17633a}.empty{padding:30px;text-align:center;color:#677687}.inline-form{display:flex;align-items:end;gap:12px;flex-wrap:wrap}.inline-form label{flex:1;min-width:180px}footer{text-align:center;color:#657789;padding:20px;font-size:.85rem}@media(max-width:600px){.wrap{padding:16px 12px 60px}.panel{padding:16px}.gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.tile-body{padding:10px}.tile h2,.tile h3{font-size:.95rem}.filter select{width:100%}.top{padding:12px}}
.class-management{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 0;border-bottom:1px solid #dde4eb}.class-management form{margin:0}.class-management button:disabled{opacity:.4;cursor:not-allowed}
