:root{--bg:#fffdf8;--ink:#1a1a1a;--muted:#5e5a55;--line:#eee7da;--accent:#1f3f73;--btn-ink:#fff;--err:#8e2a12}
@media (prefers-color-scheme:dark){:root{--bg:#12151b;--ink:#eceae6;--muted:#a9a49c;--line:#2a2f39;--accent:#ffc928;--btn-ink:#1a1405;--err:#ff9c85}}
*{box-sizing:border-box}html,body{margin:0;height:100%}
body{background:var(--bg);color:var(--ink);font:16px/1.5 Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;display:grid;place-items:center;padding:max(16px,env(safe-area-inset-top)) max(16px,env(safe-area-inset-right)) max(16px,env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left))}
.card{width:100%;max-width:360px;text-align:center}
.logo{width:160px;height:auto;display:block;margin:0 auto}
h1{font-size:1.4rem;margin:.6rem 0 .2rem}p{color:var(--muted);margin:.2rem 0 1.4rem}.err{color:var(--err)}
.btn{display:inline-block;background:var(--accent);color:var(--btn-ink);text-decoration:none;padding:.7rem 1.6rem;border-radius:999px;font-weight:600}
.btn:focus-visible{outline:3px solid var(--muted);outline-offset:2px}