:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#16324d;background:#f3f6fa;font-size:16px}*{box-sizing:border-box}body{margin:0}header{background:#102d48;color:white;padding:1.2rem max(1rem,calc((100% - 1040px)/2));display:flex;gap:1rem;align-items:center;flex-wrap:wrap}.brand{font-size:1.4rem;letter-spacing:.16em;font-weight:750}main{max-width:1040px;margin:2rem auto;padding:0 1rem}h1{font-size:clamp(1.7rem,4vw,2.3rem);margin-bottom:.6rem}h2{font-size:1.2rem}.lead,.hint{color:#4b6073}.card,.notice{border:1px solid #dce5ef;border-radius:12px;padding:1.5rem;margin:1.25rem 0;background:white}.notice{border-left:5px solid #b77b19;background:#fff9ed}p{line-height:1.6}.grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}label{display:block;margin-bottom:.5rem;font-weight:600}form{margin-top:1.6rem;padding-top:1.5rem;border-top:1px solid #e0e7ef}input{width:100%;max-width:36rem;padding:.85rem;border:1px solid #a7b8c7;border-radius:6px;font:inherit}button{background:#176396;color:white;border:1px solid transparent;border-radius:7px;padding:.85rem 1.1rem;font:inherit;font-weight:600;cursor:pointer;min-height:44px}.secondary{background:white;color:#176396;border-color:#176396}button:disabled{background:#e4eaf0;color:#566c7e;cursor:not-allowed}button:focus-visible,input:focus-visible{outline:3px solid #d2a230;outline-offset:3px}footer{max-width:1040px;margin:1rem auto 2rem;padding:0 1rem;color:#4b6073}@media(max-width:600px){.grid{grid-template-columns:1fr}.card,.notice{padding:1.1rem}button{width:100%}}