:root {
  --ink: #111111;
  --paper: #ffffff;
  --muted: #4a4a4a;
  --line: #c9c9c9;
  --focus: #0b57d0;
  --bad: #b00020;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 18px/1.35 var(--font); }
.top { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.mark { display: block; width: 40px; height: auto; }
.brand { margin: 0; font-weight: 700; font-size: 18px; flex: 1; color: var(--ink); }
main { max-width: 560px; margin: 0 auto; padding: 16px; }
.card { display: block; }
h1 { font-size: 24px; margin: 8px 0 16px; }
label { display: block; font-weight: 600; margin: 0 0 12px; }
input[type=text], input[type=tel], input[type=email], select, textarea {
  display: block; width: 100%; margin-top: 4px; padding: 12px; font: inherit; color: var(--ink);
  background: var(--paper); border: 1px solid var(--ink); border-radius: 6px; min-height: 48px;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus, button:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.seg { border: 0; padding: 0; margin: 0 0 12px; display: flex; gap: 12px; }
.seg legend { font-weight: 600; padding: 0; margin-bottom: 4px; }
.seg label { flex: 1; border: 1px solid var(--ink); border-radius: 6px; padding: 12px; margin: 0; font-weight: 600; min-height: 48px; }
.check { display: flex; gap: 12px; align-items: flex-start; font-weight: 400; margin: 12px 0; }
.check input { width: 24px; height: 24px; margin: 2px 0 0; flex: none; }
.session { margin: 0 0 12px; font-weight: 600; color: var(--muted); }
.primary { width: 100%; min-height: 56px; font: inherit; font-weight: 700; background: var(--ink); color: var(--paper); border: 0; border-radius: 6px; }
.primary[disabled] { opacity: .5; }
.link { background: none; border: 0; padding: 8px 0; font: inherit; color: var(--ink); text-decoration: underline; cursor: pointer; }
.error { color: var(--bad); font-weight: 600; margin: 8px 0; }
.suggest { margin: -8px 0 12px; }
.banner { margin: 0; padding: 8px 16px; background: #f1f1f1; border-bottom: 1px solid var(--line); font-weight: 600; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
input[aria-invalid=true], select[aria-invalid=true] { border-color: var(--bad); border-width: 2px; }
footer { text-align: center; padding: 24px 16px; }
footer a { color: var(--muted); }
[hidden] { display: none !important; }