:root{font:16px/1.6 Arial,sans-serif;color:#183568;background:#e4ecfa}*{box-sizing:border-box}body{margin:0}a{color:inherit}header{display:flex;align-items:center;gap:28px;background:#203b80;color:white;padding:20px 4%}.brand{font-size:1.8rem;text-decoration:none;margin-right:auto}.brand span{color:#efbe92;font-style:italic}.layout{max-width:1450px;margin:auto}nav{display:flex;flex-wrap:wrap;background:#cbd9ef;padding:15px;gap:8px}nav a{padding:9px 13px;text-decoration:none;border-radius:6px}nav a[aria-current]{background:#203b80;color:white}main{padding:28px;max-width:1150px;margin:auto}h1{font:2.5rem/1.15 Georgia,serif}h2{font-size:1.35rem}.card{background:#f6f9ff;border:1px solid #bdcde6;border-radius:12px;padding:24px;margin:22px 0}label{display:block;margin:15px 0;font-weight:bold}input,select,textarea{font:inherit;display:block;max-width:100%;width:100%;padding:10px;border:1px solid #889cbc;border-radius:6px;background:white;color:#152f61;margin-top:6px}.check{display:flex;align-items:start;gap:10px;font-weight:normal}.check input{width:auto;margin-top:6px}button,.button{display:inline-block;background:#203b80;color:white;padding:12px 18px;border:0;border-radius:7px;font:inherit;font-weight:bold;cursor:pointer;text-decoration:none}button:hover,.button:hover{background:#122959}.notice{padding:16px;background:#efd0b0;border-radius:8px}.tag{display:inline-block;background:#d5e2f7;padding:5px 12px;border-radius:20px}summary{cursor:pointer;font-weight:bold}.products{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.products article{background:#dce7f7;border-radius:10px;padding:18px}footer{padding:30px;text-align:center}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #ad6029;outline-offset:3px}form{margin:16px 0}@media(max-width:650px){main{padding:18px}.products{grid-template-columns:1fr}header{flex-wrap:wrap;gap:12px}.card{padding:18px}h1{font-size:2rem}nav{gap:4px}nav a{padding:8px;font-size:.9rem}}