body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      margin: 0;
      padding: 0;
      background: #f5f5f5;
      color: #333;
    }

    header {
      background: #005b96;
      color: #fff;
      padding: 12px 16px;
    }

    header h1 {
      margin: 0;
      font-size: 20px;
    }

    main {
      max-width: 960px;
      margin: 16px auto;
      padding: 0 12px 32px;
    }

    .car-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
      gap: 16px;
    }

    .car-card {
      background: #fff;
      border-radius: 8px;
      box-shadow: 0 2px 4px rgba(0,0,0,0.1);
      overflow: hidden;
      cursor: pointer;
      transition: transform 0.15s ease, box-shadow 0.15s ease;
    }

    .car-card:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 10px rgba(0,0,0,0.18);
    }

    .car-card img {
      width: 100%;
      display: block;
      object-fit: cover;
      max-height: 160px;
    }

    .car-card-body {
      padding: 10px 12px 12px;
    }

    .car-name {
      font-weight: 600;
      margin-bottom: 4px;
    }

    .car-meta {
      font-size: 13px;
      color: #666;
      margin-bottom: 6px;
    }

    .car-price {
      font-weight: 600;
      color: #c0392b;
      font-size: 14px;
    }

    /* モーダル */
    .modal-backdrop {
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.4);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 1000;
    }

    .modal-backdrop.active {
      display: flex;
    }

    .modal {
      background: #fff;
      border-radius: 8px;
      max-width: 640px;
      width: calc(100% - 32px);
      max-height: 90vh;
      overflow-y: auto;
      box-shadow: 0 4px 16px rgba(0,0,0,0.25);
      animation: fadeIn 0.2s ease-out;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(6px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    .modal-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 10px 14px;
      border-bottom: 1px solid #eee;
      background: #f9f9f9;
      position: sticky;
      top: 0;
      z-index: 1;
    }

    .modal-title {
      margin: 0;
      font-size: 16px;
      font-weight: 600;
    }

    .modal-close {
      border: none;
      background: transparent;
      font-size: 20px;
      line-height: 1;
      cursor: pointer;
      padding: 4px;
      color: #666;
    }

    .modal-body {
      padding: 12px 14px 16px;
    }

    .modal-body img {
      width: 100%;
      max-height: 220px;
      object-fit: cover;
      border-radius: 6px;
      margin-bottom: 10px;
    }

    .spec-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 14px;
    }

    .spec-table th,
    .spec-table td {
      border-bottom: 1px solid #eee;
      padding: 6px 4px;
      vertical-align: top;
    }

    .spec-table th {
      width: 32%;
      text-align: left;
      font-weight: 600;
      background: #fafafa;
    }

    .spec-price {
      font-weight: 700;
      color: #c0392b;
    }

    .note {
      margin-top: 12px;
      font-size: 12px;
      color: #777;
    }

    @media (max-width: 600px) {
      header h1 {
        font-size: 17px;
      }
      .car-card-body {
        padding: 8px 10px 10px;
      }
    }