:root{font-family:Arial,sans-serif;color:#183b4a;background:#f5f8fa}*{box-sizing:border-box}body{margin:0}header,main,footer{max-width:1250px;margin:auto;padding:20px}header{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;background:#fff}a{color:#145d82}header>a{font-size:24px;font-weight:700;text-decoration:none}nav{display:flex;gap:18px;flex-wrap:wrap;align-items:center}h1{line-height:1.25}.categories{padding:18px 0}.products{display:grid;grid-template-columns:repeat(auto-fill,minmax(225px,1fr));gap:18px}.product,.detail{background:white;border:1px solid #d8e2e8;border-radius:12px;padding:20px}.product img{display:block;object-fit:contain;max-width:100%;margin:auto}.product h2{font-size:17px;line-height:1.4}.detail-image{display:block;max-width:100%;height:auto;object-fit:contain;margin:20px auto}.detail h2{font-size:21px}.price{font-size:25px;font-weight:700}.primary{display:inline-block;padding:12px 18px;background:#145d82;color:#fff;border-radius:8px}.notice{padding:14px;border-left:4px solid #c28621;background:#fff8e9}.pagination{margin:24px 0;justify-content:space-between}dt{font-weight:bold}dd{margin:4px 0 14px}footer{font-size:14px}a:focus-visible{outline:3px solid #e8a52c;outline-offset:3px}@media(max-width:600px){header,main,footer{padding:14px}.products{grid-template-columns:1fr}.detail{padding:15px}h1{font-size:25px}}