:root{--ink:#e8e4da;--muted:#aaa99f;--panel:#282a26;--bg:#1f201d;--line:#44463e;--accent:#d8bf89;--err:#e39a7f}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;display:grid;place-items:center;padding:16px;background:var(--bg);color:var(--ink);font:15px/1.7 "Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",sans-serif;word-break:keep-all}
.box{width:100%;max-width:360px;background:var(--panel);border:1px solid var(--line);border-top:3px solid var(--accent);padding:32px 28px 26px}
.brand{font:400 22px Georgia,serif;letter-spacing:4px;margin:0 0 18px}
.brand span{font:11px "Apple SD Gothic Neo","Noto Sans KR",sans-serif;letter-spacing:3px;color:var(--muted);margin-left:8px;vertical-align:middle}
h1{font:600 20px "Apple SD Gothic Neo","Noto Sans KR",sans-serif;margin:0 0 4px;letter-spacing:-.3px}
p{margin:0 0 20px;color:var(--muted);font-size:13px}
label{display:block;font-size:12px;font-weight:600;margin-bottom:6px;color:var(--accent);letter-spacing:1px}
input{width:100%;font:inherit;font-size:18px;letter-spacing:4px;padding:11px 14px;border:1px solid var(--line);border-radius:4px;background:#1b1c19;color:var(--ink)}
input:focus{outline:3px solid var(--accent);outline-offset:2px}
button{margin-top:12px;width:100%;padding:12px;border:0;border-radius:4px;background:var(--accent);color:#22231f;font:inherit;font-weight:700;cursor:pointer}
button:hover{filter:brightness(1.06)}
.err{color:var(--err);font-size:13px;margin:12px 0 0;min-height:1.3em}