body { font-family: system-ui, sans-serif; background: #f4f5f7; color: #1c1f23; margin: 0; display: grid; min-height: 100vh; place-items: center; }
main { background: #fff; border-radius: 8px; box-shadow: 0 1px 6px rgba(0,0,0,.15); padding: 2rem; width: min(24rem, 90vw); }
h1 { font-size: 1.25rem; margin: 0 0 .5rem; }
p { margin: 0 0 1rem; color: #4a5058; }
label { display: block; font-weight: 600; margin-bottom: .25rem; }
input[type=password] { box-sizing: border-box; width: 100%; padding: .6rem; font-size: 1rem; border: 1px solid #98a0a8; border-radius: 4px; }
button { margin-top: 1rem; width: 100%; padding: .7rem; font-size: 1rem; border: 0; border-radius: 4px; background: #0b5cad; color: #fff; cursor: pointer; }
.error { color: #b00020; font-weight: 600; }