:root {
  --ink: #111;
  --muted: #666;
  --line: #e2e2e2;
  --bg: #f5f5f4;
  --panel: #fff;
  --accent: #111;
  --ok: #1f7a3a;
  --fail: #b42318;
  --fail-bg: #fdf0ef;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

header { text-align: center; padding: 24px 16px 8px; }
header img { height: 120px; max-width: 100%; }
main { max-width: 560px; margin: 0 auto; padding: 0 16px 32px; }
footer { text-align: center; color: var(--muted); font-size: 13px; padding-bottom: 24px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 28px;
}
h1 { font-size: 22px; margin: 0 0 8px; }
.lead { color: var(--muted); margin: 0 0 20px; }
.req { color: var(--fail); }

.field { margin: 0 0 16px; border: 0; padding: 0; }
.field label, .field legend { display: block; font-weight: 600; margin-bottom: 4px; }
input[type=text], input[type=email], input[type=tel], textarea {
  width: 100%;
  font: inherit;
  padding: 9px 10px;
  border: 1px solid #bbb;
  border-radius: 6px;
  background: #fff;
}
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
textarea { resize: vertical; }
.hint { color: var(--muted); font-size: 13px; }
.counter { text-align: right; }

.field label.inline { display: inline-flex; gap: 6px; align-items: center; font-weight: normal; margin-right: 20px; }
.field label.check { display: flex; gap: 10px; align-items: flex-start; font-weight: normal; font-size: 14px; }
.field label.check input { margin-top: 4px; flex-shrink: 0; }

.has-error input, .has-error textarea { border-color: var(--fail); background: var(--fail-bg); }
.error { color: var(--fail); font-size: 13px; margin: 4px 0 0; }
.alert {
  background: var(--fail-bg);
  border: 1px solid var(--fail);
  color: var(--fail);
  border-radius: 6px;
  padding: 10px 12px;
  margin-bottom: 20px;
}

.buttons { text-align: center; margin-top: 24px; }
button {
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 6px;
  padding: 11px 32px;
  cursor: pointer;
}
button:hover { background: #333; }
button:disabled { opacity: .6; cursor: default; }

.thanks { text-align: center; }
.thanks img { margin-bottom: 12px; }