:root{font-family:system-ui,"Microsoft YaHei",sans-serif;color:#e5edf6;background:#101821;color-scheme:dark}
body{margin:0;min-height:100vh;display:grid;place-items:center}
main{max-width:420px;margin:24px;padding:42px;border:1px solid #2d4052;border-radius:20px;background:#172330}
h1{font-size:32px;margin:16px 0}p{line-height:1.8;color:#b2c2d2}
.eyebrow{font-size:12px;letter-spacing:2px;color:#81c5b2}.hint{font-size:13px;margin-top:24px}
.login{display:block;text-align:center;padding:14px;margin-top:28px;background:#80d4b6;color:#122c24;text-decoration:none;font-weight:650;border-radius:8px}
.login:focus-visible{outline:3px solid white;outline-offset:4px}