body { margin: 0; padding: 2rem 1rem; font: 1rem system-ui, sans-serif; background: #f5f6f7; color: #1d2d3e; }
main { max-width: 24rem; margin: 4rem auto; padding: 2rem; background: white; border-radius: .5rem; }
form { display: grid; gap: .75rem; margin: 1.5rem 0; }
input, button { box-sizing: border-box; width: 100%; padding: .75rem; font: inherit; border: 1px solid #8c9ba8; border-radius: .25rem; }
button { background: #0070f2; color: white; cursor: pointer; }
a { color: #0057d2; }
#erro { color: #aa0808; }