* { margin: 0; padding: 0; box-sizing: border-box; }
    :root {
      --bg: #f5f7fa;
      --surface: #ffffff;
      --border: #e4e7eb;
      --text: #1f2937;
      --text-muted: #6b7280;
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --success: #10b981;
      --warning: #f59e0b;
      --danger: #ef4444;
      --radius: 8px;
      --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.03);
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
      background: var(--bg);
      color: var(--text);
      font-size: 14px;
      line-height: 1.5;
    }
    /* Header */
    header {
      background: var(--surface);
      border-bottom: 1px solid var(--border);
      padding: 12px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 600;
      font-size: 16px;
    }
    .brand-icon {
      width: 32px;
      height: 32px;
      background: var(--primary);
      color: white;
      border-radius: var(--radius);
      display: grid;
      place-items: center;
      font-size: 18px;
    }
    .lang-switch {
      display: flex;
      gap: 4px;
      background: var(--bg);
      padding: 2px;
      border-radius: var(--radius);
    }
    .lang-btn {
      padding: 6px 12px;
      border: none;
      background: transparent;
      cursor: pointer;
      border-radius: 6px;
      font-size: 13px;
      color: var(--text-muted);
    }
    .lang-btn.active {
      background: var(--surface);
      color: var(--text);
      box-shadow: var(--shadow);
    }
    /* Tabs */
    .tabs {
      background: var(--surface);
      border-bottom: 1px solid var(--border);
      padding: 0 24px;
      display: flex;
      gap: 4px;
      overflow-x: auto;
    }
    .tab-btn {
      padding: 14px 20px;
      border: none;
      background: transparent;
      cursor: pointer;
      font-size: 14px;
      color: var(--text-muted);
      border-bottom: 2px solid transparent;
      white-space: nowrap;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .tab-btn.active {
      color: var(--primary);
      border-bottom-color: var(--primary);
      font-weight: 500;
    }
    .tab-btn:hover:not(.active) { color: var(--text); }
    /* Main */
    main {
      padding: 24px;
      max-width: 1600px;
      margin: 0 auto;
    }
    .tab-panel { display: none; }
    .tab-panel.active { display: block; }
    /* Toolbar */
    .toolbar {
      display: flex;
      gap: 12px;
      margin-bottom: 20px;
      flex-wrap: wrap;
      align-items: center;
    }
    .toolbar-left {
      flex: 1;
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
    }
    .search-input {
      padding: 8px 12px;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: var(--surface);
      font-size: 14px;
      min-width: 240px;
    }
    select, input[type="text"], input[type="number"], input[type="date"], input[type="datetime-local"], input[type="email"], input[type="tel"], textarea {
      padding: 8px 12px;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: var(--surface);
      font-size: 14px;
      font-family: inherit;
    }
    textarea { resize: vertical; min-height: 80px; }
    /* Buttons */
    .btn {
      padding: 8px 16px;
      border: 1px solid var(--border);
      background: var(--surface);
      border-radius: var(--radius);
      cursor: pointer;
      font-size: 14px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      white-space: nowrap;
      font-family: inherit;
    }
    .btn:hover { background: var(--bg); }
    .btn-primary {
      background: var(--primary);
      color: white;
      border-color: var(--primary);
    }
    .btn-primary:hover { background: var(--primary-dark); }
    .btn-danger { color: var(--danger); }
    .btn-sm { padding: 4px 10px; font-size: 12px; }
    /* Card grid */
    .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 16px;
    }
    .property-card {
      background: var(--surface);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: transform 0.15s, box-shadow 0.15s;
      cursor: pointer;
    }
    .property-card:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 8px rgba(0,0,0,0.1), 0 8px 24px rgba(0,0,0,0.05);
    }
    .property-card-image {
      width: 100%;
      aspect-ratio: 16/10;
      background: linear-gradient(135deg, #dbeafe, #f0f9ff);
      display: grid;
      place-items: center;
      color: #94a3b8;
      font-size: 40px;
      background-size: cover;
      background-position: center;
    }
    .property-card-body { padding: 12px 14px; }
    .property-card-title {
      font-weight: 600;
      margin-bottom: 4px;
      font-size: 14px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .property-card-meta {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .property-card-price {
      font-size: 18px;
      font-weight: 700;
      color: var(--primary);
    }
    .property-card-rent { color: var(--success); }
    /* Badge */
    .badge {
      display: inline-block;
      padding: 2px 8px;
      border-radius: 99px;
      font-size: 11px;
      font-weight: 500;
    }
    .badge-available { background: #d1fae5; color: #065f46; }
    .badge-negotiating { background: #fef3c7; color: #92400e; }
    .badge-contracted { background: #dbeafe; color: #1e40af; }
    .badge-sold, .badge-leased { background: #e5e7eb; color: #374151; }
    .badge-withdrawn, .badge-expired { background: #fee2e2; color: #991b1b; }
    .badge-draft { background: #f3f4f6; color: #6b7280; }
    /* Table */
    .table-wrap {
      background: var(--surface);
      border-radius: var(--radius);
      overflow: auto;
      box-shadow: var(--shadow);
    }
    table {
      width: 100%;
      border-collapse: collapse;
      font-size: 14px;
    }
    th, td {
      padding: 10px 12px;
      text-align: left;
      border-bottom: 1px solid var(--border);
    }
    th {
      background: var(--bg);
      font-weight: 600;
      font-size: 12px;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      position: sticky;
      top: 0;
    }
    tr:hover { background: var(--bg); }
    /* Modal */
    .modal-backdrop {
      position: fixed;
      inset: 0;
      background: rgba(17, 24, 39, 0.6);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 1000;
      padding: 20px;
    }
    .modal-backdrop.open { display: flex; }
    .modal {
      background: var(--surface);
      border-radius: var(--radius);
      width: 100%;
      max-width: 900px;
      max-height: 90vh;
      display: flex;
      flex-direction: column;
      overflow: hidden;
    }
    .modal-header {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .modal-title { font-size: 18px; font-weight: 600; }
    .modal-close {
      background: transparent;
      border: none;
      font-size: 22px;
      cursor: pointer;
      color: var(--text-muted);
      padding: 4px 8px;
      line-height: 1;
    }
    .modal-body { padding: 20px; overflow-y: auto; flex: 1; }
    .modal-footer {
      padding: 14px 20px;
      border-top: 1px solid var(--border);
      display: flex;
      justify-content: flex-end;
      gap: 10px;
    }
    /* Form */
    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }
    .form-group { display: flex; flex-direction: column; gap: 4px; }
    .form-group.full { grid-column: span 2; }
    label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }
    label .required { color: var(--danger); }
    .form-section {
      padding: 14px 0;
      border-bottom: 1px solid var(--border);
      margin-bottom: 14px;
    }
    .form-section:last-child { border-bottom: none; margin-bottom: 0; }
    .form-section h3 {
      font-size: 13px;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 10px;
    }
    /* Image grid */
    .image-upload-area {
      border: 2px dashed var(--border);
      border-radius: var(--radius);
      padding: 24px;
      text-align: center;
      cursor: pointer;
      background: var(--bg);
      transition: border-color .15s, background .15s, transform .12s;
    }
    .image-upload-area:hover { border-color: var(--primary); background: #eff6ff; }
    .image-upload-area.dragover {
      border-color: var(--primary);
      border-style: solid;
      background: #dbeafe;
      transform: scale(1.02);
      box-shadow: 0 4px 12px rgba(37,99,235,.2);
    }
    .image-upload-area.dragover * { pointer-events: none; }

    /* ============ VR 区域 ============ */
    .vr-list { margin-bottom: 16px; }
    .vr-item {
      display: flex; align-items: center; gap: 12px;
      padding: 12px 14px;
      background: linear-gradient(135deg, #f5f3ff, #eff6ff);
      border: 1px solid #ddd6fe;
      border-radius: var(--radius);
      margin-bottom: 8px;
    }
    .vr-item-icon {
      width: 40px; height: 40px;
      background: linear-gradient(135deg, #7c3aed, #2563eb);
      border-radius: 8px;
      display: grid; place-items: center;
      font-size: 20px;
      flex-shrink: 0;
    }
    .vr-item-body { flex: 1; min-width: 0; }
    .vr-item-title { font-weight: 500; color: var(--text); margin-bottom: 2px; font-size: 14px; }
    .vr-item-url { font-size: 12px; color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .vr-item-url a { color: var(--primary); text-decoration: none; }
    .vr-item-url a:hover { text-decoration: underline; }
    .vr-add-form {
      background: var(--bg);
      border: 1px dashed var(--border);
      border-radius: var(--radius);
      padding: 14px;
    }
    .vr-add-form code {
      font-size: 11px; background: rgba(0,0,0,0.06);
      padding: 1px 5px; border-radius: 3px;
    }
    .btn-sm { padding: 6px 10px; font-size: 12px; }
    .image-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
      gap: 8px;
      margin-top: 10px;
    }
    .image-thumb {
      aspect-ratio: 1;
      border-radius: 6px;
      background-size: cover;
      background-position: center;
      position: relative;
      border: 2px solid transparent;
    }
    .image-thumb.cover { border-color: var(--primary); }
    .image-thumb-remove {
      position: absolute;
      top: 4px;
      right: 4px;
      background: rgba(0,0,0,0.6);
      color: white;
      border: none;
      border-radius: 50%;
      width: 22px;
      height: 22px;
      cursor: pointer;
      font-size: 12px;
    }
    .image-thumb-set-cover {
      position: absolute;
      bottom: 4px;
      left: 4px;
      background: rgba(0,0,0,0.6);
      color: white;
      border: none;
      border-radius: 4px;
      padding: 2px 6px;
      font-size: 10px;
      cursor: pointer;
    }
    /* Empty state */
    .empty-state {
      padding: 60px 20px;
      text-align: center;
      color: var(--text-muted);
    }
    .empty-state-icon { font-size: 60px; opacity: 0.4; margin-bottom: 10px; }
    /* Toast */
    .toast {
      position: fixed;
      top: 20px;
      right: 20px;
      background: var(--text);
      color: white;
      padding: 12px 20px;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      z-index: 2000;
      opacity: 0;
      transform: translateY(-10px);
      transition: all 0.3s;
      max-width: 320px;
    }
    .toast.show { opacity: 1; transform: translateY(0); }
    .toast.error { background: var(--danger); }
    .toast.success { background: var(--success); }
    /* Customer 360 */
    .c360-layout { display: grid; grid-template-columns: 300px 1fr; gap: 20px; }
    .c360-search-panel {
      background: var(--surface);
      border-radius: var(--radius);
      padding: 14px;
      height: fit-content;
      box-shadow: var(--shadow);
    }
    .c360-list { max-height: 60vh; overflow-y: auto; }
    .c360-list-item {
      padding: 10px;
      border-bottom: 1px solid var(--border);
      cursor: pointer;
    }
    .c360-list-item:hover { background: var(--bg); }
    .c360-list-item.selected { background: #eff6ff; color: var(--primary); }
    .c360-detail {
      background: var(--surface);
      border-radius: var(--radius);
      padding: 20px;
      box-shadow: var(--shadow);
    }
    .stat-row {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
      gap: 12px;
      margin-bottom: 20px;
    }
    .stat-card {
      background: var(--bg);
      padding: 14px;
      border-radius: var(--radius);
      text-align: center;
    }
    .stat-value { font-size: 24px; font-weight: 700; color: var(--primary); }
    .stat-label { font-size: 12px; color: var(--text-muted); }
    /* Loading */
    .loading {
      display: inline-block;
      width: 14px;
      height: 14px;
      border: 2px solid var(--border);
      border-top-color: var(--primary);
      border-radius: 50%;
      animation: spin 0.6s linear infinite;
    }
    @keyframes spin { to { transform: rotate(360deg); } }
    /* Responsive */
    @media (max-width: 768px) {
      .form-grid { grid-template-columns: 1fr; }
      .form-group.full { grid-column: span 1; }
      .c360-layout { grid-template-columns: 1fr; }
      main { padding: 14px; }
    }