:root{font-family:system-ui,sans-serif;color:#143b34;background:#edf4f1}body{margin:0}main{max-width:560px;margin:5vh auto;padding:28px;background:white;border-radius:16px;box-shadow:0 5px 30px #173c3417}h1{font-size:clamp(24px,5vw,34px);line-height:1.2}.brand{font-weight:750;letter-spacing:.12em;font-size:12px}p{line-height:1.55}button{display:block;width:100%;padding:16px;margin:12px 0;border:0;border-radius:8px;background:#126253;color:white;font:700 16px system-ui;cursor:pointer}button.secondary{background:#e6eee9;color:#143b34}button:disabled{opacity:.5;cursor:wait}input{width:100%;box-sizing:border-box;font:20px system-ui;padding:12px;border:1px solid #8aa99f;border-radius:8px}a{color:#126253;font-weight:650}.hint{font-size:13px;color:#46665d}#notice{padding:12px;background:#eef5f1;border-radius:6px}#notice.error{background:#fff0ed;color:#8d2516}details{margin-top:30px}summary{cursor:pointer;font-weight:650}[hidden]{display:none!important}@media(max-width:600px){main{margin:12px;padding:22px}}