* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    }

    body {
      background: linear-gradient(135deg, #1a2a6c, #2c3e50);
      color: #fff;
      min-height: 100vh;
      padding-bottom: 40px;
      line-height: 1.6;
    }

    .navbar {
      background: rgba(0, 0, 0, 0.7);
      backdrop-filter: blur(10px);
      padding: 15px 40px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
      position: sticky;
      top: 0;
      z-index: 100;
    }

    .logo {
      display: flex;
      align-items: center;
      text-decoration: none;
      color: #4fc3f7;
      font-weight: bold;
      font-size: 1.5rem;
    }

    .logo i {
      margin-right: 10px;
      font-size: 1.8rem;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 25px;
    }

    .nav-links a {
      display: flex;
      align-items: center;
      text-decoration: none;
      color: #e0e0e0;
      font-size: 1rem;
      transition: color 0.3s;
    }

    .nav-links a:hover {
      color: #4fc3f7;
    }

    .nav-links a i {
      margin-right: 8px;
    }

    .user-profile {
      display: flex;
      align-items: center;
      cursor: pointer;
      padding: 8px 15px;
      border-radius: 30px;
      background: rgba(255, 255, 255, 0.1);
      transition: background 0.3s;
    }

    .user-profile:hover {
      background: rgba(255, 255, 255, 0.2);
    }

    .user-profile i {
      margin-left: 10px;
      font-size: 0.9rem;
    }

    .container {
      max-width: 1200px;
      margin: 30px auto;
      padding: 0 20px;
    }

    .card {
      background: rgba(255, 255, 255, 0.05);
      border-radius: 15px;
      padding: 25px;
      margin-bottom: 25px;
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.1);
      transition:
        transform 0.3s,
        box-shadow 0.3s;
    }

    .card:hover {
      transform: translateY(-5px);
      box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    }

    .card-title {
      display: flex;
      align-items: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
      color: #4fc3f7;
      padding-bottom: 15px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .card-title i {
      margin-right: 12px;
      font-size: 1.5rem;
    }

    .login-prompt {
      text-align: center;
      padding: 40px 20px;
      background: rgba(255, 255, 255, 0.05);
      border-radius: 15px;
    }

    .login-prompt i {
      font-size: 4rem;
      color: #4fc3f7;
      margin-bottom: 20px;
    }

    .login-prompt h2 {
      font-size: 2rem;
      margin-bottom: 15px;
      color: #4fc3f7;
    }

    .login-prompt p {
      font-size: 1.1rem;
      margin-bottom: 25px;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
      color: #e0e0e0;
      line-height: 1.6;
    }

    .login-btn {
      background: linear-gradient(to right, #2196f3, #21cbf3);
      color: white;
      border: none;
      padding: 12px 35px;
      font-size: 1.1rem;
      border-radius: 30px;
      cursor: pointer;
      transition: all 0.3s ease;
      font-weight: 600;
      box-shadow: 0 4px 15px rgba(33, 150, 243, 0.4);
    }

    .login-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(33, 150, 243, 0.6);
    }

    .section-title {
      font-size: 1.2rem;
      margin: 25px 0 15px;
      color: #4fc3f7;
      display: flex;
      align-items: center;
    }

    .section-title i {
      margin-right: 10px;
    }

    .file-list {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 20px;
      margin-bottom: 25px;
    }

    .file-item {
      background: rgba(255, 255, 255, 0.07);
      border-radius: 10px;
      padding: 15px;
      display: flex;
      align-items: center;
      cursor: pointer;
      transition: all 0.3s;
      border: 1px solid rgba(255, 255, 255, 0.1);
      position: relative;
      overflow: hidden;
    }

    .file-item:hover {
      background: rgba(255, 255, 255, 0.12);
      transform: translateY(-3px);
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    }

    .file-item.selected {
      background: rgba(79, 195, 247, 0.15);
      border: 1px solid rgba(79, 195, 247, 0.4);
    }

    .file-item.selected:before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 5px;
      height: 100%;
      background: #4fc3f7;
    }

    .file-icon {
      width: 50px;
      height: 50px;
      background: rgba(79, 195, 247, 0.2);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-right: 15px;
      font-size: 1.5rem;
      color: #4fc3f7;
      flex-shrink: 0;
    }

    .file-details {
      flex: 1;
      min-width: 0;
    }

    .file-name {
      font-weight: 600;
      margin-bottom: 5px;
      color: #fff;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .file-meta {
      display: flex;
      font-size: 0.85rem;
      color: #aaa;
    }

    .file-size {
      margin-right: 15px;
      display: flex;
      align-items: center;
    }

    .file-size:before {
      content: "📦";
      margin-right: 5px;
    }

    .file-date {
      color: #aaa;
      display: flex;
      align-items: center;
    }

    .file-date:before {
      content: "📅";
      margin-right: 5px;
    }

    .config-options {
      margin-top: 25px;
      padding-top: 25px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .option-group {
      margin-bottom: 25px;
      background: rgba(0, 0, 0, 0.1);
      border-radius: 10px;
      padding: 15px;
      border: 1px solid rgba(255, 255, 255, 0.05);
    }

    .option-header {
      display: flex;
      align-items: center;
      margin-bottom: 15px;
      justify-content: space-between;
    }

    .option-title {
      font-size: 1.1rem;
      font-weight: 600;
      color: #4fc3f7;
      flex: 1;
    }

    .switch {
      position: relative;
      display: inline-block;
      width: 50px;
      height: 24px;
      margin-left: 15px;
    }

    .switch input {
      opacity: 0;
      width: 0;
      height: 0;
    }

    .slider {
      position: absolute;
      cursor: pointer;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-color: #ccc;
      transition: 0.4s;
      border-radius: 24px;
    }

    .slider:before {
      position: absolute;
      content: "";
      height: 18px;
      width: 18px;
      left: 3px;
      bottom: 3px;
      background-color: white;
      transition: 0.4s;
      border-radius: 50%;
    }

    input:checked + .slider {
      background-color: #2196f3;
    }

    input:checked + .slider:before {
      transform: translateX(26px);
    }

    .option-params {
      padding: 15px;
      background: rgba(0, 0, 0, 0.2);
      border-radius: 10px;
      margin-top: 10px;
      display: block;
    }

    .param-item {
      margin-bottom: 15px;
    }

    .param-item label {
      display: block;
      margin-bottom: 8px;
      color: #e0e0e0;
      font-weight: 500;
    }

    .param-item input,
    .param-item select {
      width: 100%;
      padding: 12px 15px;
      background: rgba(0, 0, 0, 0.3);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 8px;
      color: white;
      font-size: 1rem;
      transition: border 0.3s;
    }

    .param-item input:focus,
    .param-item select:focus {
      outline: none;
      border-color: #4fc3f7;
      box-shadow: 0 0 0 2px rgba(79, 195, 247, 0.2);
    }

    .notes-input {
      width: 100%;
      height: 500px;
      padding: 15px;
      background: rgba(0, 0, 0, 0.3);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 10px;
      color: white;
      font-size: 1rem;
      resize: vertical;
      margin-top: 10px;
      transition: border 0.3s;
    }

    .notes-input:focus {
      outline: none;
      border-color: #4fc3f7;
      box-shadow: 0 0 0 2px rgba(79, 195, 247, 0.2);
    }

    .action-area {
      margin-top: 30px;
    }

    .action-buttons {
      display: flex;
      gap: 15px;
      justify-content: center;
      margin-top: 20px;
      flex-wrap: wrap;
    }

    .action-btn {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 12px 24px;
      border-radius: 30px;
      border: none;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      min-width: 120px;
    }

    .action-btn i {
      margin-right: 8px;
      font-size: 18px;
    }

    .action-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    }

    .action-btn:disabled {
      opacity: 0.6;
      cursor: not-allowed;
      transform: none;
      box-shadow: none;
    }

    .obfuscate-btn {
      background: linear-gradient(135deg, #4caf50, #2e7d32);
      color: white;
    }

    .download-btn {
      background: linear-gradient(135deg, #2196f3, #0d47a1);
      color: white;
    }

    .delete-btn {
      background: linear-gradient(135deg, #f44336, #b71c1c);
      color: white;
    }

    .action-button {
      background: linear-gradient(to right, #00c853, #00e676);
      color: white;
      border: none;
      padding: 15px 45px;
      font-size: 1.2rem;
      border-radius: 30px;
      cursor: pointer;
      transition: all 0.3s ease;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      box-shadow: 0 4px 15px rgba(0, 200, 83, 0.4);
      margin: 20px auto 0;
    }

    .action-button i {
      margin-right: 10px;
    }

    .action-button:hover {
      transform: translateY(-3px);
      box-shadow: 0 6px 20px rgba(0, 200, 83, 0.6);
    }

    .upload-area {
      border: 2px dashed rgba(255, 255, 255, 0.3);
      border-radius: 15px;
      padding: 40px 20px;
      text-align: center;
      cursor: pointer;
      transition: all 0.3s;
      margin-bottom: 20px;
      background: rgba(0, 0, 0, 0.1);
    }

    .upload-area:hover {
      border-color: #4fc3f7;
      background: rgba(79, 195, 247, 0.05);
    }

    .upload-icon {
      font-size: 3.5rem;
      color: #4fc3f7;
      margin-bottom: 15px;
    }

    .upload-text {
      font-size: 1.3rem;
      font-weight: 600;
      margin-bottom: 10px;
      color: #fff;
    }

    .upload-subtext {
      color: #aaa;
      margin-bottom: 20px;
    }

    .browse-button {
      display: inline-block;
      background: rgba(79, 195, 247, 0.2);
      color: #4fc3f7;
      padding: 10px 25px;
      border-radius: 30px;
      font-weight: 600;
      transition: all 0.3s;
    }

    .browse-button:hover {
      background: rgba(79, 195, 247, 0.3);
    }

    .processing-state {
      display: none;
      text-align: center;
      padding: 40px 20px;
    }

    .spinner {
      width: 50px;
      height: 50px;
      border: 5px solid rgba(255, 255, 255, 0.1);
      border-top: 5px solid #4fc3f7;
      border-radius: 50%;
      margin: 0 auto 20px;
      animation: spin 1s linear infinite;
    }

    @keyframes spin {
      0% {
        transform: rotate(0deg);
      }
      100% {
        transform: rotate(360deg);
      }
    }

    .status-text {
      font-size: 1.2rem;
      margin-bottom: 10px;
    }

    .progress-text {
      color: #aaa;
    }

    .status-indicator {
      display: flex;
      align-items: center;
      justify-content: center;
      margin-top: 20px;
    }

    .status-dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: #4fc3f7;
      margin-right: 10px;
      animation: pulse 1.5s infinite;
    }

    @keyframes pulse {
      0% {
        opacity: 0.5;
      }
      50% {
        opacity: 1;
      }
      100% {
        opacity: 0.5;
      }
    }

    .selected-file-info {
      background: rgba(79, 195, 247, 0.1);
      border-radius: 10px;
      padding: 15px;
      margin: 15px 0;
      display: flex;
      align-items: center;
      border-left: 3px solid #4fc3f7;
    }

    .selected-file-info i {
      font-size: 24px;
      color: #4fc3f7;
      margin-right: 15px;
    }

    .selected-file-name {
      font-weight: 600;
      color: #fff;
    }

    /* 进度条样式 */
    .progress-container {
      width: 100%;
      background: rgba(0, 0, 0, 0.2);
      border-radius: 4px;
      margin-top: 15px;
      overflow: hidden;
      display: none;
    }

    .progress-bar {
      height: 8px;
      background: linear-gradient(90deg, #4fc3f7, #2196f3);
      border-radius: 4px;
      width: 0%;
      transition: width 0.3s ease;
    }

    .progress-info {
      display: flex;
      justify-content: space-between;
      margin-top: 5px;
      font-size: 0.8rem;
      color: #aaa;
    }

    .progress-percentage {
      color: #4fc3f7;
      font-weight: bold;
    }

    .progress-speed {
      font-style: italic;
    }

    .progress-complete {
      background: linear-gradient(90deg, #4caf50, #2e7d32);
    }

    /* 响应式设计 */
    @media (max-width: 768px) {
      .navbar {
        padding: 15px 20px;
        flex-direction: column;
        gap: 15px;
      }

      .nav-links {
        width: 100%;
        justify-content: space-between;
      }

      .file-list {
        grid-template-columns: 1fr;
      }

      .nav-links span {
        display: none;
      }

      .nav-links a i,
      .user-profile i {
        margin-right: 0;
      }

      .user-profile span {
        display: none;
      }

      .action-buttons {
        flex-direction: column;
      }

      .action-btn {
        width: 100%;
      }
      
      .refresh-btn {
        margin-left: 0;
        margin-top: 10px;
      }
    }

    /* 新增：文件选择指示器 */
    .file-selection-indicator {
      display: flex;
      align-items: center;
      margin: 15px 0;
      padding: 10px 15px;
      background: rgba(79, 195, 247, 0.1);
      border-radius: 8px;
      font-size: 0.9rem;
    }

    .file-selection-indicator i {
      margin-right: 10px;
      color: #4fc3f7;
    }

    .no-files {
      text-align: center;
      padding: 30px;
      color: #aaa;
    }

    .no-files i {
      font-size: 3rem;
      margin-bottom: 15px;
      color: #4fc3f7;
    }
    
        .refresh-btn {
      background: none;
      border: none;
      color: #64b5f6; /* 柔和的蓝色 */
      cursor: pointer;
      font-size: 1.1rem;
      margin-left: auto; /* 靠右对齐 */
      padding: 5px 10px;
      border-radius: 4px;
      transition: all 0.3s;
    }

    .refresh-btn:hover {
      color: #90caf9; /* 悬停时更亮的蓝色 */
      background: rgba(255, 255, 255, 0.05);
    }

    .refresh-btn i {
      margin-right: 5px;
    }