:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4f;
  --text: #e8eef7;
  --muted: #8b9cb3;
  --accent: #6c9eff;
  --accent-soft: rgba(108, 158, 255, 0.15);
  --radius: 12px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: radial-gradient(ellipse 120% 80% at 50% -20%, #1e3a5f 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.6;
}

.hero {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 1.5rem;
  text-align: center;
}

.hero.compact {
  padding-bottom: 0.5rem;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.subtitle {
  margin: -0.25rem 0 0.85rem;
  font-size: 0.95rem;
  color: var(--muted);
  font-weight: 500;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

.lead strong {
  color: var(--accent);
  font-weight: 600;
}

.warn {
  margin: 0.5rem 0 0;
  color: #f0c674;
  font-size: 0.9rem;
}

.card {
  max-width: 720px;
  margin: 0 auto 3rem;
  padding: 1.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
}

.card-wide {
  max-width: 900px;
}

.question {
  padding-bottom: 1.75rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--border);
}

.question:last-of-type {
  border-bottom: none;
  margin-bottom: 1rem;
}

.q-title {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.45;
}

.q-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.75rem;
  height: 1.75rem;
  margin-right: 0.6rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 6px;
  vertical-align: middle;
}

.options {
  display: grid;
  gap: 0.75rem;
}

.options.options-quad {
  grid-template-columns: 1fr;
}

@media (min-width: 560px) {
  .options.options-quad {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .options.options-quad {
    grid-template-columns: repeat(4, 1fr);
  }
}

.opt-key {
  display: inline-block;
  margin-right: 0.45rem;
  font-weight: 800;
  color: var(--accent);
}

.option {
  cursor: pointer;
  display: block;
}

.option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.option-card {
  display: block;
  padding: 1rem 1.1rem;
  border-radius: 10px;
  border: 2px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}

.option:hover .option-card {
  border-color: var(--muted);
  background: rgba(255, 255, 255, 0.06);
}

.option input:focus-visible + .option-card {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.option input:checked + .option-card {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-1px);
}

.actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  padding-top: 0.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.15s, transform 0.15s;
}

.btn:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.btn.primary {
  background: linear-gradient(135deg, #5b8def, var(--accent));
  color: #fff;
}

.btn.secondary {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.footer {
  text-align: center;
  padding: 1rem 1.25rem 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}

/* Result page */
.result-card {
  text-align: center;
}

.type-image {
  margin-bottom: 1.5rem;
}

.type-image img {
  max-width: 280px;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.type-badge {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.5rem 1.25rem;
  font-size: clamp(2rem, 6vw, 2.75rem);
  font-weight: 800;
  letter-spacing: 0.15em;
  color: var(--bg);
  background: linear-gradient(135deg, #a8d4ff, var(--accent));
  border-radius: 10px;
}

.type-desc {
  margin: 0 0 2rem;
  font-size: 1.1rem;
  color: var(--text);
  text-align: left;
}

.section-title {
  margin: 0 0 1rem;
  font-size: 1rem;
  color: var(--muted);
  font-weight: 600;
  text-align: left;
}

.breakdown {
  list-style: none;
  margin: 0;
  padding: 0;
  text-align: left;
}

.breakdown li {
  display: grid;
  grid-template-columns: 5rem 1fr auto;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

@media (max-width: 480px) {
  .breakdown li {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .dim-label {
    margin-bottom: -0.15rem;
  }
}

.dim-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

.dim-bar-wrap {
  min-width: 0;
}

.dim-bar {
  display: block;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.dim-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #5b8def, var(--accent));
  border-radius: 4px;
  min-width: 4px;
}

.dim-count {
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

.page-result .actions {
  margin-top: 1.5rem;
}

.visit-count {
  margin-top: 0.35rem;
  font-size: 0.8rem;
  color: var(--muted);
  opacity: 0.7;
}

.visit-count #visit-counter {
  font-weight: 700;
  color: var(--accent);
}