:root {
  --blue: #002B7F;
  --yellow: #FCD116;
  --red: #CE1126;
  --text: #1a1a1a;
  --muted: #5a5a5a;
  --bg: #ffffff;
  --card-bg: #f7f7f9;
  --border: #e3e3e8;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
a { color: var(--blue); }

.stripe { height: 6px; display: flex; }
.stripe span { flex: 1; }
.stripe .b { background: var(--blue); }
.stripe .y { background: var(--yellow); }
.stripe .r { background: var(--red); }

.page-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.back-link {
  font-weight: 600;
  text-decoration: none;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}

h1 {
  font-size: 1.6rem;
  color: var(--blue);
  margin-top: 0.5rem;
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}
.breadcrumb a { color: var(--muted); }

.intro {
  color: var(--muted);
  margin-bottom: 2rem;
}

.q-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.q-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
}
.q-num {
  margin: 0 0 0.35rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.q-text {
  margin: 0 0 0.75rem;
  font-weight: 600;
}
.options {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}
.options li {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  background: var(--bg);
  font-size: 0.95rem;
}
.options li.correct {
  border-color: var(--blue);
  background: #eef2fb;
  color: var(--blue);
  font-weight: 600;
}
.options li.correct::before {
  content: "✓ ";
}

.cta-block {
  margin: 2.5rem 0;
  padding: 1.5rem;
  background: var(--blue);
  color: white;
  border-radius: 16px;
  text-align: center;
}
.cta-block p { margin: 0 0 1rem; }
.store-badge { display: inline-block; }
.store-badge img { height: 52px; width: auto; }

.related {
  font-size: 0.9rem;
  color: var(--muted);
}

.cat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
@media (max-width: 560px) {
  .cat-grid { grid-template-columns: 1fr; }
}
.cat-card {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem 1.5rem;
  text-decoration: none;
  color: var(--text);
}
.cat-card h3 { margin: 0 0 0.25rem; color: var(--blue); }
.cat-card p { margin: 0; color: var(--muted); font-size: 0.9rem; }

.page-footer {
  text-align: center;
  padding: 2rem 1.5rem 3rem;
  border-top: 1px solid var(--border);
}
.page-footer p { margin-top: 1rem; font-size: 0.85rem; }