.md3-theme {
  --md-primary-container: #fce8e6;
  --md-on-primary-container: #c5221f;
  --md-surface-container-lowest: #ffffff;
  --md-surface-container-high: #e8eaed;
  --border-light: rgba(0, 0, 0, 0.08);
  --border-dark: #bdc1c6;
  --md-elevation-2: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  background-color: transparent;
}

.md3-stepper-card {
  margin-bottom: 24px;
}

.md3-section-title .material-symbols-outlined {
  color: var(--md-secondary);
}

/* === 1. 店舗情報サマリー (Tonal Card) === */
/* メインコンテンツと分離し、確認と変更アクションのみを提供する */
.md3-shop-summary {
  background-color: var(--md-surface-container);
  border-radius: var(--border-radius-lg);
  padding: 16px 24px;
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.md3-shop-summary-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.md3-shop-summary-label {
  font-size: var(--typescale-label-small);
  line-height: var(--typescale-label-small-line-height);
  color: var(--text-muted);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 4px;
}

.md3-shop-summary-name {
  font-size: var(--typescale-title);
  line-height: var(--typescale-title-line-height);
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.md3-shop-summary-address {
  font-size: var(--typescale-label);
  line-height: var(--typescale-label-line-height);
  color: var(--text-muted);
  margin: 0;
}

/* === 2. メインコンテンツ (Filled Card) === */
.md3-main-card {
  background-color: var(--md-surface-container-low);
  border: none;
  border-radius: var(--border-radius-lg);
  padding: 32px;
  margin-bottom: 32px;
}

/* === 3. 車種選択エリア === */
.md3-car-heading {
  font-size: var(--typescale-title);
  line-height: var(--typescale-title-line-height);
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text-main);
  text-align: center;
}

.md3-car-desc {
  font-size: var(--typescale-body);
  line-height: var(--typescale-body-line-height);
  color: var(--text-main);
  text-align: center;
  margin: 0 0 32px;
}

.md3-car-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.md3-car-card {
  background-color: var(--md-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-lg);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: box-shadow 0.2s, transform 0.2s, border-color 0.2s;
  cursor: pointer;
}

.md3-car-card:hover {
  box-shadow: var(--md-elevation-3);
  transform: translateY(-4px);
  border-color: var(--md-primary);
}

.md3-car-type {
  font-size: var(--typescale-body);
  line-height: var(--typescale-body-line-height);
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--text-main);
}

.md3-car-weight {
  font-size: var(--typescale-label);
  line-height: var(--typescale-label-line-height);
  color: var(--text-muted);
  margin: 0 0 16px;
  min-height: 20px;
}

.md3-car-img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  margin-bottom: 16px;
}

.md3-btn-select {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: var(--border-radius-full);
  background-color: var(--md-primary-container);
  color: var(--md-on-primary-container) !important;
  font-size: var(--typescale-label);
  line-height: var(--typescale-label-line-height);
  font-weight: 700;
  transition: background-color 0.2s, color 0.2s;
  width: 100%;
}

.md3-car-card:hover .md3-btn-select {
  background-color: var(--md-primary);
  color: #ffffff !important;
}

/* === 4. 注意事項エリア (下部に配置) === */
.md3-notice-area {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border-dark);
}

.md3-notice-title {
  font-size: var(--typescale-label);
  line-height: var(--typescale-label-line-height);
  font-weight: 700;
  color: var(--text-muted);
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.md3-notice-title .material-symbols-outlined {
  font-size: 18px;
}

.md3-notice-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.md3-notice-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: var(--typescale-label);
  color: var(--text-muted);
  line-height: var(--typescale-label-line-height);
}

.md3-notice-list li .material-symbols-outlined {
  font-size: 18px;
  color: var(--md-primary);
  flex-shrink: 0;
  margin-top: 0;
  height: var(--typescale-label-line-height);
  display: inline-flex;
  align-items: center;
}

/* レスポンシブ */
@media (max-width: 768px) {
.md3-car-grid {
    grid-template-columns: repeat(2, 1fr);
  }

.md3-shop-summary {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
.md3-car-grid { grid-template-columns: 1fr; }

.md3-main-card { padding: 24px 16px; }
}

body.step-syasyu-select #main .md3-theme { padding: 8px 0 40px; text-align: left; min-width: 0; overflow-wrap: anywhere; }

.md3-theme a:focus-visible { outline: 3px solid var(--md-secondary); outline-offset: 3px; }

@media (max-width: 737px) {
body.step-syasyu-select #main .md3-theme { padding: 16px 4% 32px; }
}