:root{font-family:system-ui,-apple-system,'Noto Sans JP',sans-serif;color:#243040;background:#f5f6f8;font-size:17px}*{box-sizing:border-box}body{margin:0;padding:5vh 20px}main{max-width:660px;margin:auto;background:#fff;border:1px solid #e5e8ed;border-radius:22px;padding:clamp(24px,5vw,48px);box-shadow:0 15px 50px #24304009}.eyebrow{font-size:12px;letter-spacing:1.4px;color:#c65b35;font-weight:700}h1{font-size:clamp(26px,4vw,36px);line-height:1.4}h2{font-size:23px}p{line-height:1.8}label{display:block;margin:22px 0 16px;font-size:15px;font-weight:600}input{display:block;margin:8px 0 0;width:100%;padding:13px;border:1px solid #c5cdd7;border-radius:9px;font:inherit}button{background:#b8492c;color:#fff;font:inherit;font-weight:700;border:0;border-radius:10px;padding:13px 22px;cursor:pointer}button:disabled{opacity:.5}a{color:#a34129}.note{font-size:14px;color:#697484;margin-top:28px}#message{color:#ad3929;font-weight:600}section{border-top:1px solid #e5e8ed;margin-top:24px;padding-top:12px}#invite-url{font-size:12px}