:root{color-scheme:light dark;--fundo:#f6f5f2;--texto:#1d1d1b;--suave:#6b6a66;--linha:#d6d3cc;--destaque:#2f4a3a}
@media (prefers-color-scheme:dark){:root{--fundo:#161615;--texto:#ecebe7;--suave:#a3a19b;--linha:#3a3936;--destaque:#9cc4ab}}
*{box-sizing:border-box}
body{margin:0;background:var(--fundo);color:var(--texto);font:16px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif}
main{max-width:480px;margin:0 auto;padding:32px 16px}
h1{font-size:24px;margin:0 0 8px}p{color:var(--suave)}a{color:var(--destaque)}
label{display:block;font-weight:600;margin:16px 0 6px}
input{width:100%;padding:12px;font:inherit;border:1px solid var(--linha);border-radius:6px;background:transparent;color:inherit}
button{margin-top:16px;width:100%;padding:12px;font:inherit;font-weight:600;border:0;border-radius:6px;background:var(--destaque);color:var(--fundo);cursor:pointer}
.escondido{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}