:root {
  --bg: #f9f9f7; --surface: #fcfcfb; --ink: #0b0b0b; --ink2: #52514e;
  --line: #e1e0d9; --brand: #2a78d6; --brand-ink: #ffffff; --err: #d03b3b;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0d0d0d; --surface: #1a1a19; --ink: #ffffff; --ink2: #c3c2b7;
    --line: #2c2c2a; --brand: #3987e5; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 440px; margin: 0 auto; padding: 24px 16px 40px; }
h1 { font-size: 1.4rem; margin: 8px 0 4px; }
p.sub { color: var(--ink2); margin: 0 0 20px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
label { display: block; font-weight: 600; font-size: .9rem; margin: 14px 0 6px; }
input[type=text], input[type=tel], input[type=email] {
  width: 100%; padding: 12px; font-size: 1rem; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg); color: var(--ink); }
input:focus { outline: 2px solid var(--brand); outline-offset: 1px; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; font-size: .85rem;
  color: var(--ink2); margin: 12px 0; }
.check input { margin-top: 3px; }
button { width: 100%; padding: 14px; margin-top: 12px; font-size: 1rem; font-weight: 600;
  border: 0; border-radius: 8px; background: var(--brand); color: var(--brand-ink); cursor: pointer; }
.erro { background: color-mix(in srgb, var(--err) 12%, transparent); border: 1px solid var(--err);
  color: var(--ink); padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; font-size: .9rem; }
.banner { display: block; margin-bottom: 16px; }
.banner img { width: 100%; border-radius: 12px; display: block; }
.legal { font-size: .75rem; color: var(--ink2); margin-top: 16px; text-align: center; }

[hidden] { display: none !important; }