.checker-shell {
  max-width: 760px;
  margin: 3rem auto 5rem;
}

.checker-intro {
  margin-bottom: 1.5rem;
}

.checker-topline {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.checker-eyebrow {
  color: #00497a;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.checker-badge {
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: #fff1c7;
  color: #664c00;
  font-size: 0.78rem;
  font-weight: 700;
}

.checker-intro h1 {
  color: #102a43;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.05;
  margin-bottom: 1rem;
}

.checker-intro > p {
  max-width: 650px;
  color: #486581;
  font-size: 1.08rem;
  line-height: 1.6;
}

.checker-intro .checker-date {
  margin-top: 0.75rem;
  color: #627d98;
  font-size: 0.92rem;
}

.checker-card {
  min-height: 390px;
  padding: clamp(1.25rem, 4vw, 2.25rem);
  border: 1px solid #d9e2ec;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 18px 50px rgba(16, 42, 67, 0.09);
}

.checker-step {
  margin-bottom: 0.75rem;
  color: #627d98;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.checker-question,
.checker-result-title {
  color: #102a43;
  font-size: clamp(1.45rem, 4vw, 2rem);
  line-height: 1.2;
  margin-bottom: 0.65rem;
}

.checker-help,
.checker-result-summary {
  color: #486581;
  line-height: 1.55;
  margin-bottom: 1.25rem;
}

.checker-findings {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.25rem;
}

.checker-finding {
  padding: 1rem;
  border: 1px solid #d9e2ec;
  border-radius: 10px;
  background: #f7fafc;
}

.checker-finding-protection { background: #f0f7ff; }

.checker-finding-label {
  margin: 0 0 0.35rem;
  color: #627d98;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.checker-finding-value {
  margin: 0;
  color: #102a43;
  font-weight: 700;
  line-height: 1.4;
}

.checker-options {
  display: grid;
  gap: 0.7rem;
}

.checker-option {
  width: 100%;
  padding: 0.95rem 1rem;
  border: 1px solid #bcccdc;
  border-radius: 10px;
  background: #fff;
  color: #102a43;
  cursor: pointer;
  font: inherit;
  font-size: 1rem;
  line-height: 1.35;
  text-align: left;
  transition: border-color 120ms ease, background 120ms ease, transform 120ms ease;
}

.checker-option:hover,
.checker-option:focus-visible {
  border-color: #0080ff;
  background: #f0f7ff;
  outline: none;
  transform: translateY(-1px);
}

.checker-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.checker-back,
.checker-restart {
  padding: 0.7rem 1rem;
  border: 1px solid #9fb3c8;
  border-radius: 8px;
  background: #fff;
  color: #00497a;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

.checker-result {
  border-top: 6px solid #627d98;
}

.checker-result[data-tone="tenancy"] { border-top-color: #1f9d55; }
.checker-result[data-tone="licence"] { border-top-color: #1677c8; }
.checker-result[data-tone="special"] { border-top-color: #7950c7; }
.checker-result[data-tone="unclear"] { border-top-color: #d69e00; }

.checker-reasons {
  margin: 0 0 1.25rem 1.15rem;
  color: #334e68;
  line-height: 1.5;
}

.checker-reasons li + li { margin-top: 0.45rem; }

.checker-sources {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid #d9e2ec;
}

.checker-sources summary {
  color: #00497a;
  cursor: pointer;
  font-weight: 700;
}

.checker-sources ul { margin: 0.75rem 0 0 1.15rem; }
.checker-sources a { color: #006dcc; text-decoration: underline; }

.checker-note {
  margin-top: 1rem;
  padding: 1rem 1.15rem;
  border-radius: 10px;
  background: #f5f7fa;
  color: #486581;
  line-height: 1.5;
}

.checker-note strong { color: #102a43; }
.checker-note p { margin-top: 0.3rem; }

@media (max-width: 600px) {
  .checker-shell { margin-top: 1.5rem; }
  .checker-card { min-height: 0; border-radius: 12px; }
  .checker-findings { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .checker-option { transition: none; }
}