:root {
  color-scheme: light dark;
  --bg: #faf6ee;
  --card: #ffffff;
  --ink: #1f2a2e;
  --muted: #4b5a60;
  --line: #d9d2c3;
  --accent: #0f5b5d;
  --accent-ink: #ffffff;
  --tint: #e4f0ef;
  --err: #a4262c;
  --focus: #b45309;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14191b;
    --card: #1d2427;
    --ink: #eef2f1;
    --muted: #b4c0c3;
    --line: #3a484e;
    --accent: #6cc4c0;
    --accent-ink: #0b1a1b;
    --tint: #1f3436;
    --err: #ff9a9f;
    --focus: #fbbf24;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 1.0625rem/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
h2:focus, main:focus { outline: none; }

.skip {
  position: absolute; left: -999px; top: 0; z-index: 10;
  background: var(--accent); color: var(--accent-ink); padding: .6rem 1rem;
}
.skip:focus { left: .5rem; top: .5rem; }

.top, main, .foot { max-width: 40rem; margin: 0 auto; padding-left: 1rem; padding-right: 1rem; }
.top { padding-top: 1.25rem; padding-bottom: .5rem; }
main { padding-bottom: 2rem; }

.brand {
  margin: 0 0 .75rem; font-size: .85rem; line-height: 1.3; font-weight: 600;
  letter-spacing: .06em; text-transform: uppercase; color: var(--muted);
}

progress {
  display: block; width: 100%; height: .5rem; border: 0; border-radius: 99px;
  appearance: none; -webkit-appearance: none; background: var(--line); overflow: hidden;
}
progress::-webkit-progress-bar { background: var(--line); }
progress::-webkit-progress-value { background: var(--accent); transition: width .3s; }
progress::-moz-progress-bar { background: var(--accent); }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 1rem; padding: 1.5rem 1.25rem;
}

h2, .q-title {
  margin: 0 0 .75rem; font: 600 1.5rem/1.25 ui-serif, Georgia, "Times New Roman", serif;
}
.q-title label { font: inherit; }

.lead { font-size: 1.125rem; }
.facts { padding-left: 1.2rem; }
.facts li { margin: .35rem 0; }

fieldset { border: 0; padding: 0; margin: 0 0 1.75rem; min-width: 0; }
legend { padding: 0; margin: 0 0 .35rem; width: 100%; }
.q { margin: 0 0 1.75rem; }
.q-label { display: block; font-weight: 700; }
.help { margin: .15rem 0 .75rem; color: var(--muted); font-size: .97rem; }
.live:empty { display: none; }
.live { margin-top: .5rem; color: var(--ink); font-weight: 600; }

.opts { display: grid; gap: .6rem; }
.opt {
  display: flex; gap: .75rem; align-items: flex-start; cursor: pointer;
  padding: .85rem 1rem; border: 2px solid var(--line); border-radius: .75rem; background: var(--card);
}
.opt:hover { border-color: var(--accent); }
.opt:has(input:checked) { border-color: var(--accent); background: var(--tint); }
.opt:focus-within { outline: 3px solid var(--focus); outline-offset: 2px; }
.opt input { flex: none; width: 1.35rem; height: 1.35rem; margin: .15rem 0 0; accent-color: var(--accent); }
.opt-body { display: grid; gap: .1rem; }
.opt-title { font-weight: 600; }
.opt-desc { color: var(--muted); font-size: .95rem; }

input[type="text"], input[type="email"], textarea {
  width: 100%; font: inherit; color: var(--ink); background: var(--card);
  padding: .75rem .9rem; border: 2px solid var(--line); border-radius: .6rem;
}
.has-err input[type="text"], .has-err input[type="email"], .has-err .opt { border-color: var(--err); }

.err { margin: .5rem 0 0; color: var(--err); font-weight: 600; }
.errsum {
  margin: 0 0 1.25rem; padding: .75rem 1rem; color: var(--err); font-weight: 600;
  border: 2px solid var(--err); border-radius: .75rem;
}

.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }
.actions .btn-primary { margin-left: auto; }
.btn {
  min-height: 2.75rem; padding: .8rem 1.4rem; font: inherit; font-weight: 600;
  border: 2px solid var(--accent); border-radius: .75rem; cursor: pointer;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-secondary { background: transparent; color: var(--accent); }
.btn[disabled] { opacity: .6; cursor: wait; }

.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.foot { padding-bottom: 2rem; color: var(--muted); font-size: .9rem; }
.foot a { color: var(--accent); }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}