:root {
  --bg: #f5f6f8; --card: #fff; --text: #1d2330; --muted: #5d6475;
  --accent: #1f5fbf; --accent-text: #fff; --border: #d9dde5; --error: #b3261e; --error-bg: #fdecea;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c; --card: #1d2128; --text: #e6e8ec; --muted: #a0a7b4;
    --accent: #6ea2ff; --accent-text: #0b1220; --border: #343a45; --error: #ff8a80; --error-bg: #3a1f1d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 24px 16px 64px; }
main:has(.wide) { max-width: 1200px; }
h1 { font-size: 1.6rem; margin: 0 0 8px; }
h2 { font-size: 1.2rem; margin-top: 32px; }
.intro, .help { color: var(--muted); }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px 20px 20px; margin: 0 0 16px;
}
.section { margin: 36px 0 12px; }
.section h2 { margin: 0 0 4px; padding-bottom: 6px; border-bottom: 2px solid var(--accent); }
.section .intro { margin: 8px 0 0; }
.card.center { text-align: center; padding: 40px 20px; }
legend { font-weight: 600; padding: 0 4px; margin-left: -4px; float: left; width: 100%; margin-bottom: 8px; }
legend + * { clear: both; }
label { display: block; margin: 12px 0 4px; font-weight: 500; }
input[type=text], select, textarea {
  width: 100%; padding: 10px 12px; font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.req { color: var(--error); }
label.opt { font-weight: 400; margin: 8px 0; display: flex; gap: 10px; align-items: center; cursor: pointer; }
label.opt input { width: 18px; height: 18px; margin: 0; }
.other-wrap { display: none; margin-top: 4px; }
.other-wrap.show { display: block; }
.scale { display: flex; gap: 8px; flex-wrap: wrap; }
.scale-opt { margin: 0; }
.scale-opt input { position: absolute; opacity: 0; }
.scale-opt span {
  display: inline-flex; width: 44px; height: 44px; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: 8px; cursor: pointer; background: var(--bg);
}
.scale-opt input:checked + span { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.scale-opt input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.scale-labels { display: flex; justify-content: space-between; color: var(--muted); font-size: .85rem; margin-top: 6px; }
button, .btn {
  display: inline-block; background: var(--accent); color: var(--accent-text); border: 0; border-radius: 8px;
  padding: 12px 24px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none;
}
button { width: 100%; }
.btn.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.errors { background: var(--error-bg); color: var(--error); border-radius: 10px; padding: 12px 20px; margin-bottom: 16px; }
.errors ul { margin: 8px 0 0; padding-left: 20px; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.table-scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; background: var(--card); font-size: .9rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: var(--bg); white-space: nowrap; }
table.counts { width: auto; min-width: 280px; border: 1px solid var(--border); }