:root { color-scheme: light; }
* { box-sizing: border-box; }
body {
    margin: 0; min-height: 100vh; font-family: system-ui, sans-serif;
    color: #1c2421; background: #eef2f0;
}
main.porta-pagina {
    min-height: 100vh; display: flex; flex-direction: column;
    justify-content: center; gap: 12px; padding: 24px;
    width: min(420px, 100%); margin: 0 auto;
}
h1 { margin: 0 0 8px; font-size: 1.6rem; }
a.porta, button {
    display: block; text-align: center; text-decoration: none;
    border: 0; border-radius: 14px; padding: 16px; font: inherit; font-weight: 700;
    background: #0f3d32; color: #fff;
}
a.porta.segunda { background: #fff; color: #0f3d32; border: 1px solid #cfd8d4; }
header { padding: 16px 16px 8px; display: flex; justify-content: space-between; align-items: center; }
header p { margin: 0; font-size: 1.25rem; font-weight: 700; }
header a, a.voltar { color: #52615c; font-size: .85rem; text-decoration: none; }
.miolo { width: min(520px, 100%); margin: 0 auto; padding: 0 16px 32px; }
h2 { margin: 22px 0 0; font-size: 1.05rem; }
.caixa, .linha {
    display: block; background: #fff; color: inherit; text-decoration: none;
    border-radius: 14px; padding: 14px; margin-top: 12px;
}
.linha strong { display: block; }
.mudo { color: #52615c; font-size: .9rem; }
.desligado { color: #8a2a1d; font-weight: 700; }
.ligado { color: #0f3d32; font-weight: 700; }
label { display: block; margin-top: 12px; color: #52615c; font-size: .85rem; }
input, select {
    display: block; width: 100%; margin-top: 4px; padding: 10px 12px;
    border: 1px solid #cfd8d4; border-radius: 10px; font: inherit; background: #fff;
}
button { width: 100%; margin-top: 16px; }