*{box-sizing:border-box}
body{margin:0;min-height:100vh;display:grid;place-items:center;font-family:system-ui,-apple-system,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;
 background:#1d2330;background-image:linear-gradient(45deg,#232a39 25%,transparent 25%,transparent 75%,#232a39 75%),linear-gradient(45deg,#232a39 25%,transparent 25%,transparent 75%,#232a39 75%);
 background-size:32px 32px;background-position:0 0,16px 16px;color:#e9ecf2}
.card{width:min(360px,92vw);background:#2b3346;border:4px solid #11151d;box-shadow:6px 6px 0 #11151d;padding:28px 24px;image-rendering:pixelated}
.logo{display:flex;gap:10px;justify-content:center;margin-bottom:10px}
.px{width:28px;height:28px;border:3px solid #11151d}.px.c{background:#D97757}.px.x{background:#f2f2f2}
h1{margin:4px 0 2px;font-size:20px;text-align:center;letter-spacing:.5px}
.sub{margin:0 0 20px;text-align:center;color:#9aa4b8;font-size:13px}
label{display:block;font-size:13px;color:#c5ccd9;margin-bottom:12px}
input{display:block;width:100%;margin-top:6px;padding:11px 12px;font-size:16px;background:#1d2330;color:#fff;border:3px solid #11151d;outline:none}
input:focus{border-color:#D97757}
button{width:100%;padding:12px;font-size:16px;font-weight:700;background:#D97757;color:#fff;border:3px solid #11151d;box-shadow:3px 3px 0 #11151d;cursor:pointer}
button:active{transform:translate(2px,2px);box-shadow:1px 1px 0 #11151d}
.err{min-height:18px;margin:0 0 8px;color:#ff8a80;font-size:13px}
.hint{margin:14px 0 0;text-align:center;color:#7d879b;font-size:12px}