* { margin: 0; padding: 0; box-sizing: border-box; font-family: -apple-system, sans-serif; }
    body { background-color: #f2f2f2; }
    .header { 
      display: flex; 
      justify-content: center; 
      align-items: center; 
      padding: 3px 16px; 
      background: #fff; 
      position: fixed;
      top: 0;
      width: 100%;
      max-width: 448px;
      z-index: 1000;
    }
    .header h2 { 
      margin-top: 1.7px;
      text-align: center;
    }
    .left-btn { 
      width: 20px; 
      height: 20px; 
      position: absolute;
      left: 16px;
    }
    .right-btn { 
      width: 24px; 
      height: 24px; 
      position: absolute;
      right: 16px;
    }
    .card-container { 
      margin-top: 60px;
    }
    .card { 
      background: #fff; 
      border-radius: 12px; 
      box-shadow: 0 1px 2px rgba(0,0,0,0.03); 
      margin: 0 18px 8px;
    }
    .group-card {
      padding: 12px 20px;
      display: flex;
      align-items: center;
    }
    .group-card .flex {
      gap: 12px;
      align-items: center;
      width: 100%;
    }
    .group-avatar { 
      width: 50px; 
      height: 50px; 
      border-radius: 50%; 
      background: url('img/logo.png') center/cover; 
      cursor: pointer;
    }
    .group-card .text-sm {
      font-size: 14px;
      margin-top: 1px;
    }
    .member-avatar { 
      width: 36.5px; 
      height: 36.5px; 
      border-radius: 50%; 
      margin: 0 auto; 
      background: url('img/logo.png') center/cover;
      cursor: pointer;
    }
    .members-card {
      padding: 18px 20px;
    }
    .members-title {
      font-size: 18px;
      font-weight: 400;
    }
    .members-card .flex.justify-between {
      align-items: center;
      margin-bottom: 8px;
    }
    .group-card .font-medium {
      font-weight: 400;
      font-size: 17px;
      cursor: pointer;
    }
    .member-item-name {
      font-size: 13px;
      margin-top: 5px;
      font-weight: 400;
      cursor: pointer;
    }
    .action-icon {
      width: 36.5px;
      height: 36.5px;
      border-radius: 50%;
      margin: 0 auto;
      display: block;
    }
    .arrow-icon {
      width: 14px;
      height: 14px;
    }
    .members-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 8px 15px;
      justify-items: center;
    }
    .member-item {
      text-align: center;
      width: 100%;
    }
    .group-info-section {
      padding: 10px 0;
      margin-top: -5px;
    }
    .group-info-title {
      font-size: 14px;
      color: #999;
      padding: 0 20px 8px;
    }
    .info-item-card {
      padding: 0;
    }
    .info-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 14.24px 20px;
      position: relative;
      cursor: pointer;
    }
    .info-item:not(:last-child)::after {
      content: "";
      position: absolute;
      left: 20px;
      right: 20px;
      bottom: 0;
      height: 1px;
      background-color: #f5f5f5;
    }
    .info-label {
      font-size: 18px;
      color: #333;
    }
    .info-value {
      font-size: 15px;
      color: #666;
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .small-text {
      font-size: 14px;
      color: #989799;
    }
    .qrcode-icon {
      width: 16px;
      height: 16px;
      background: url('img/6.png') center/cover;
    }
    .group-apps-card {
      padding: 12.8px 20px;
      margin-top: 14px;
    }
    .apps-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
    }
    .apps-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 10px;
    }
    .app-item {
      text-align: center;
    }
    .app-icon {
      width: 37px;
      height: 37px;
      border-radius: 8px;
      margin: 0 auto;
      background-size: cover;
      background-position: center;
    }
    .app-name {
      font-size: 12px;
      color: #333;
      margin-top: 4px;
    }

    .edit-modal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0,0,0,0.5);
      z-index: 2000;
      justify-content: center;
      align-items: center;
    }
    .modal-content {
      background: white;
      padding: 20px;
      border-radius: 12px;
      width: 90%;
      max-width: 400px;
      max-height: 85vh;
      overflow-y: auto;
    }
    .modal-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      padding-bottom: 15px;
      border-bottom: 1px solid #eee;
    }
    .modal-title {
      font-size: 18px;
      font-weight: bold;
      color: #333;
    }
    .close-btn {
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: #999;
    }
    .modal-section {
      margin-bottom: 20px;
    }
    .section-title {
      font-size: 16px;
      font-weight: bold;
      margin-bottom: 12px;
      color: #333;
    }
    .input-group {
      margin-bottom: 15px;
    }
    .input-label {
      display: block;
      margin-bottom: 8px;
      font-size: 14px;
      color: #555;
    }
    .input-field {
      width: 100%;
      padding: 10px;
      border: 1px solid #ddd;
      border-radius: 6px;
      font-size: 14px;
    }
    .modal-actions {
      display: flex;
      justify-content: flex-end;
      gap: 10px;
      margin-top: 20px;
    }
    .btn {
      padding: 10px 20px;
      border: none;
      border-radius: 6px;
      font-size: 14px;
      cursor: pointer;
      transition: background-color 0.2s;
    }
    .btn-primary {
      background-color: #1E4B7B;
      color: white;
    }
    .btn-secondary {
      background-color: #f5f5f5;
      color: #333;
    }

    .avatar-upload-group {
      display: flex;
      flex-direction: column;
      align-items: center;
      margin-bottom: 15px;
    }
    .avatar-preview {
      width: 70px;
      height: 70px;
      border-radius: 50%;
      overflow: hidden;
      margin-bottom: 10px;
      border: 2px solid #ddd;
      cursor: pointer;
    }
    .avatar-preview img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .upload-btn {
      background-color: #1E4B7B;
      color: white;
      padding: 6px 12px;
      border-radius: 6px;
      cursor: pointer;
      font-size: 12px;
      text-align: center;
    }

    .members-avatar-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 12px;
      margin-bottom: 15px;
    }
    .member-avatar-item {
      text-align: center;
      cursor: pointer;
    }
    .member-avatar-preview {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      overflow: hidden;
      margin: 0 auto 5px;
      border: 2px solid #ddd;
    }
    .member-avatar-preview img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .member-name-input {
      width: 100%;
      padding: 4px 6px;
      border: 1px solid #e0e0e0;
      border-radius: 4px;
      font-size: 10px;
      text-align: center;
      margin-top: 2px;
    }
    .member-name-input:focus {
      border-color: #1E4B7B;
      outline: none;
    }

    .unified-name-edit {
      background: #f8f9fa;
      padding: 10px;
      border-radius: 6px;
      margin-bottom: 15px;
    }

    .personal-name-group {
      background: #f8f9fa;
      padding: 10px;
      border-radius: 6px;
      margin-top: 10px;
    }

    /* 公告弹窗样式 */
    .announcement-modal { 
      display: none; 
      position: fixed; 
      top: 0; 
      left: 0; 
      width: 100%; 
      height: 100%; 
      background-color: rgba(0, 0, 0, 0.7); 
      z-index: 3000; 
      justify-content: center; 
      align-items: center; 
      padding: 20px; 
    }
    .announcement-content { 
      background-color: white; 
      border-radius: 12px; 
      width: 85%; 
      max-width: 400px; 
      padding: 20px; 
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3); 
    }
    .announcement-header { 
      display: flex; 
      justify-content: space-between; 
      align-items: center; 
      margin-bottom: 15px; 
      padding-bottom: 10px; 
      border-bottom: 1px solid #eee; 
    }
    .announcement-title { 
      font-size: 18px; 
      font-weight: bold; 
    }
    .announcement-close { 
      background: #ff4d4f; 
      color: white; 
      border: none; 
      font-size: 18px; 
      cursor: pointer; 
      width: 30px; 
      height: 30px; 
      border-radius: 50%; 
    }
    .announcement-close:disabled { 
      background: #ccc; 
    }
    .announcement-footer { 
      margin-top: 15px; 
    }
    .announcement-checkbox { 
      display: flex; 
      align-items: center; 
      gap: 8px; 
      font-size: 14px; 
      color: #666; 
    }
    .announcement-timer { 
      font-size: 13px; 
      color: #999; 
      text-align: center; 
      margin-top: 5px; 
    }