*{box-sizing:border-box}body{margin:0;background:#f5f8f5;color:#18342b;font-family:system-ui,-apple-system,"Noto Sans JP",sans-serif;line-height:1.7}header{background:white;border-bottom:1px solid #e0e9e2;padding:17px max(20px,calc((100vw - 600px)/2))}header a{font-size:1.3rem;font-weight:800;color:#167358;text-decoration:none;white-space:nowrap}header small{font-size:.65rem;letter-spacing:.14em}main{padding:28px 15px;min-height:70vh}.panel{margin:auto;max-width:560px;background:#fff;padding:clamp(22px,5vw,38px);border-radius:18px;box-shadow:0 10px 34px #0d3f2510}h1{font-size:1.6rem;margin:0 0 20px}h2{font-size:1.1rem;margin-top:32px}label{display:block;font-weight:700;margin:16px 0}input:not([type=checkbox]){display:block;width:100%;border:1px solid #b9cabf;border-radius:9px;font-size:16px;padding:13px;margin-top:5px}input:focus{outline:2px solid #23886b}.btn{display:inline-block;border:0;border-radius:10px;background:#16785c;color:#fff;font-size:1rem;font-weight:700;padding:13px 21px;cursor:pointer;text-align:center;text-decoration:none;margin:8px 8px 8px 0}.secondary{background:#e6efe8;color:#184d3d}.check{font-size:.91rem;font-weight:400}.check input{margin-right:7px}.notice{background:#e5f7ec;border-radius:8px;padding:12px}.notice.error{background:#fff0ed;color:#9e2c20}.small{color:#62786b;font-size:.85rem}.balance{background:linear-gradient(125deg,#178061,#0e5545);color:white;border-radius:14px;padding:24px;display:flex;flex-direction:column}.balance strong{font-size:2.2rem}.balance small{font-size:1rem}.history>div{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid #e5eae5;font-size:.88rem}.history b{white-space:nowrap}footer{text-align:center;color:#789080;font-size:.8rem;padding:25px}