:root{font-family:system-ui,-apple-system,"Noto Sans JP",sans-serif;color:#17362f;background:#f4f7f4;font-size:16px;line-height:1.7}*{box-sizing:border-box}body{margin:0}a{color:#176447;text-decoration:none}a:hover{text-decoration:underline}header{max-width:1060px;margin:auto;padding:24px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid #d8e3dd}header>a{font-size:14px;letter-spacing:.08em}nav{display:flex;gap:4px;padding:4px;border-radius:30px;background:#e5ede7}nav a{font-size:12px;padding:5px 10px;border-radius:24px;white-space:nowrap}nav [aria-current]{background:#1d674e;color:white}main{max-width:960px;margin:auto;padding:52px 24px}h1{font-size:clamp(30px,4vw,46px);line-height:1.3;letter-spacing:-.03em;margin:12px 0 18px}h2{font-size:25px;line-height:1.4}h3{font-size:19px;margin:0 0 14px}.intro{max-width:750px;font-size:18px;color:#4a6258}.eyebrow{font-size:12px;letter-spacing:.18em}.reward-grid,.balances,.grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.reward-grid{margin:32px 0 22px}.reward-grid article{padding:26px 30px;border-radius:18px;background:#103e31;color:#fff}.reward-grid article+article{background:#dcebcf;color:#214334}.reward-grid strong{display:block;font-size:54px;line-height:1.25;letter-spacing:-.04em;margin:12px 0}.reward-grid strong span{font-size:22px;margin-left:8px}.reward-grid p{margin:0;font-size:14px}.notice{padding:18px 22px;border-left:3px solid #33845b;background:#e4eee0;margin:20px 0}.card{padding:28px;border:1px solid #dce4de;border-radius:16px;background:white;margin:26px 0}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:35px}.balances{margin:24px 0}.balances article{border:1px solid #c5d8c9;border-radius:12px;padding:20px;background:#fff}.balances strong{display:block;font-size:30px}label{display:block;font-size:14px;margin-bottom:16px}input,select{display:block;width:100%;font:inherit;padding:11px 13px;border:1px solid #bbcbbf;border-radius:8px;margin-top:5px;background:#fff;color:#17362f}input[readonly]{background:#f4f7f4}.check{display:flex;gap:10px;align-items:flex-start}.check input{width:18px;height:18px;flex-shrink:0;margin-top:4px}button,.button,.secondary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border:1px solid #22634c;border-radius:8px;padding:10px 17px;font:inherit;font-size:14px;font-weight:650;cursor:pointer;text-align:center;background:#22634c;color:white}.secondary{background:white;color:#22634c}.small{min-height:34px;padding:4px 12px;font-size:12px}button:disabled{opacity:.5;cursor:default}.actions{display:flex;flex-wrap:wrap;gap:12px;margin:15px 0}.record{padding:17px 0;border-bottom:1px solid #e0e8e2;overflow-wrap:anywhere}.record:last-child{border:0}.record p{margin:5px 0}.record small{color:#64756b}.record form{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end;margin-top:12px}.record label{margin:0}.record input{max-width:200px}#message:not(:empty){padding:15px;background:#e4eee0;border-radius:8px}#message.error{background:#fff0e9;color:#833a22}#invitation{border:1px solid #6ba780;border-radius:12px;padding:18px;margin:24px 0}#phrase{letter-spacing:.05em}.steps li{margin:14px 0}.steps p{font-size:14px;color:#496153}footer{text-align:center;padding:30px;border-top:1px solid #dce4de;font-size:13px}[hidden]{display:none!important}@media(max-width:620px){header{padding:16px;flex-wrap:wrap}main{padding:30px 16px}.reward-grid,.balances{gap:10px}.reward-grid article{padding:19px 14px}.reward-grid strong{font-size:39px}.reward-grid strong span{font-size:17px}.reward-grid p{font-size:12px}.grid{grid-template-columns:1fr;gap:0}.card{padding:20px}.section-heading{align-items:flex-start}h2{font-size:22px}.balances strong{font-size:26px}.balances article{padding:15px}nav a{padding:4px 9px}}

.official-offer{border:2px solid #366754;scroll-margin-top:24px}.official-offer li{margin:12px 0}.official-offer h3{margin-top:18px}.official-offer summary{cursor:pointer;font-weight:650}.official-offer form{margin-top:24px}.official-offer .check{margin-top:16px}.official-offer .reward-grid h3{font-size:24px}.official-hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}#official-status:not(:empty){padding:16px;background:#e4eee0;border-radius:8px}

.official-offer .reward-grid strong{white-space:nowrap;font-size:42px}@media(max-width:620px){.official-offer .reward-grid strong{font-size:29px}.official-offer .reward-grid h3{font-size:20px}}