:root{--blue:#0757a6;--navy:#17324d;--pale:#edf6fd;--line:#d7e4ed;--muted:#607486}*{box-sizing:border-box}body{margin:0;color:#2d4355;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",Meiryo,sans-serif;line-height:1.8}header{border-top:5px solid var(--blue);border-bottom:1px solid var(--line)}.head{max-width:980px;margin:auto;padding:17px 22px;display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.35rem;font-weight:700;color:var(--navy);text-decoration:none}.back{font-size:.88rem;color:var(--blue)}main{max-width:880px;margin:auto;padding:48px 22px 70px}.eyebrow{color:var(--blue);font-weight:700;font-size:.85rem}.hero{padding-bottom:30px;border-bottom:1px solid var(--line)}h1{font-size:clamp(1.7rem,4vw,2.35rem);line-height:1.4;color:var(--navy);margin:4px 0 12px}.lead{color:#526a7c;font-size:1.05rem}.grid{display:grid;grid-template-columns:2fr 1fr;gap:34px;margin-top:34px}h2{font-size:1.25rem;color:var(--navy);margin:30px 0 8px}p{margin:0 0 14px}.facts{background:var(--pale);border:1px solid #cfe0ec;border-radius:8px;padding:20px;height:max-content}.facts h2{margin:0 0 12px;font-size:1.05rem}.facts dl{margin:0}.facts dt{font-size:.78rem;color:var(--muted);margin-top:11px}.facts dd{margin:0;font-weight:600}.premium-note{margin:26px 0 4px;padding:17px 18px;background:#fff8e8;border:1px solid #ebd49b;border-left:4px solid #d49a1d;border-radius:5px;color:#5f4a1d;font-size:.9rem}.premium-note strong{display:block;color:#513c0e;margin-bottom:3px}.official-link{margin:24px 0 2px;padding:12px 14px;background:#f7fafc;border-left:3px solid #9ebbd2;color:#50697c;font-size:.86rem}.official-link a{color:var(--blue)}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.cta{display:inline-block;background:var(--blue);color:white;text-decoration:none;font-weight:700;border:1px solid var(--blue);border-radius:6px;padding:10px 20px}.cta-secondary{background:#fff;color:var(--blue);border-color:#8bb5d6}.detail-search{margin-top:24px;padding:20px;background:#f7fafc;border:1px solid var(--line);border-radius:8px}.detail-search h2{margin:0 0 4px;font-size:1.08rem}.detail-search p{color:#526a7c;font-size:.88rem}.detail-search-row{display:flex;align-items:stretch}.detail-search-input{min-width:0;flex:1;border:1px solid #b8cad8;border-right:0;border-radius:6px 0 0 6px;padding:10px 12px;font:inherit}.detail-search-input:focus{position:relative;z-index:1;outline:2px solid #83b7df;outline-offset:0}.detail-search-suffix{display:flex;align-items:center;background:#fff;border:1px solid #b8cad8;border-left:0;padding:0 10px;color:var(--navy);font-weight:700}.detail-search-button{border:1px solid var(--blue);border-radius:0 6px 6px 0;background:var(--blue);color:#fff;padding:0 16px;font:inherit;font-weight:700;white-space:nowrap;cursor:pointer}.detail-search-button:disabled{opacity:.65;cursor:wait}.detail-search-result{display:none;margin-top:12px;padding:10px 12px;background:#fff;border:1px solid var(--line);border-radius:5px;font-size:.9rem}.detail-search-result.show{display:block}.detail-search-result.ok{color:#14733d;border-color:#9ed1b4}.detail-search-result.taken{color:#596b78}.detail-search-result.unavailable{color:#8a5b00;border-color:#dfc785}.detail-search-result.error{color:#a13333;border-color:#dfaaaa}footer{background:var(--navy);color:#dce7ee;padding:24px}.footer-inner{max-width:980px;margin:auto;text-align:center;font-size:.78rem}.footer-inner a{color:#fff}@media(max-width:680px){.grid{grid-template-columns:1fr}.head{padding:13px 17px}.head .back{font-size:.78rem}main{padding:36px 18px 54px}.footer-inner{display:block}.footer-inner div+div{margin-top:8px}.actions{align-items:stretch}.actions .cta{flex:1 1 100%;text-align:center}.detail-search-row{display:grid;grid-template-columns:1fr auto}.detail-search-input{border-right:0;border-radius:6px 0 0 6px}.detail-search-suffix{border-left:0;border-radius:0 6px 6px 0}.detail-search-button{grid-column:1 / -1;height:46px;margin-top:8px;border-radius:6px}}