:root{font-family:system-ui,sans-serif;background:#0b0d10;color:#f4f6f8}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top,#17202a,#080a0d 60%)}.shell{min-height:100vh;display:grid;place-items:center;padding:24px}.card{width:min(520px,100%);padding:32px;border:1px solid #2b333d;border-radius:20px;background:#11151a;box-shadow:0 20px 80px #0008}h1{margin:0 0 8px;font-size:32px}.muted{color:#9da8b5}label{display:block;margin:18px 0;font-weight:600}input{display:block;width:100%;margin-top:8px;padding:14px;border:1px solid #38424d;border-radius:12px;background:#0a0d10;color:#fff;font:inherit}button{width:100%;padding:14px;border:0;border-radius:12px;background:#fff;color:#080a0d;font-weight:700;cursor:pointer}.warning{font-size:13px;color:#d2b878;line-height:1.5}