.head {
      text-align: center;
      margin: 30px 0;
    }

    h1 {
      font-size: 2rem;
      margin-bottom: 10px;
      color: #1f2937;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    h1 i {
      color: #3b82f6;
      margin-right: 10px;
    }

    .intro {
      color: #6b7280;
      max-width: 600px;
      margin: 0 auto;
    }

    main {
      background: white;
      border-radius: 8px;
      padding: 20px 5px 30px 0px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
      margin-bottom: 30px;
    }

    .content {
      display: flex;
      flex-wrap: wrap;
      /*gap: 40px;*/
      margin-bottom: 25px;
    }

    .input-area,
    .output-area {
      flex: 1;
      min-width: 300px;
    }

    .area-title {
      font-size: 14px;
      font-weight: 600;
      color: #4b5563;
      margin: 0 0 10px 25px;
      display: flex;
      align-items: center;
    }

    .area-title i {
      margin-right: 8px;
    }

    .input-title i {
      color: #3b82f6;
    }

    .output-title i {
      color: #10b981;
    }

    .text-container {
      position: relative;
    }

    textarea {
      width: 100%;
      max-width: 575px;
      height: 400px;
      padding: 12px;
      margin: 10px 0px 0px 25px;
      border: 1px solid #d1d5db;
      border-radius: 6px;
      resize: none;
      font-size: 14px;
      line-height: 1.5;
    }

    textarea:focus {
      outline: none;
      border-color: #3b82f6;
      box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
    }

    #result-output {
      background-color: #f9fafb;
    }

    .inner-btn {
      position: absolute;
      right: 10px;
      top: 10px;
      background: none;
      border: none;
      color: #9ca3af;
      cursor: pointer;
      font-size: 16px;
      opacity: 0;
      transition: all 0.2s;
    }

    .inner-btn:hover {
      opacity: 1;
    }

    #clear-input-inner:hover {
      color: #ef4444;
    }

    #copy-result:hover,
    #copy-btn:hover {
      color: #10b981;
    }

    #clear-output:hover {
      color: #ef4444;
    }

    #clear-output {
      right: 70px;
    }

    #export-result {
      right: 40px;
    }

    #export-result:hover {
      color: #3b82f6;
    }

    .info {
      font-size: 12px;
      color: #6b7280;
      margin: 10px 0 0 25px;
      display: flex;
      align-items: center;
    }

    .info i {
      margin-right: 5px;
      font-size: 16px;
    }

    .btn-group {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      margin-top: 15px;
    }

    button {
      padding: 8px 16px;
      border-radius: 6px;
      border: none;
      font-size: 14px;
      font-weight: 500;
      cursor: pointer;
      display: flex;
      align-items: center;
      transition: all 0.2s;
    }

    button i {
      margin-right: 6px;
    }

    .process-btn {
      background-color: #3b82f6;
      color: white;
    }

    .process-btn:hover {
      background-color: #2563eb;
    }

    .clear-input-btn {
      background-color: #fee2e2;
      color: #dc2626;
    }

    .clear-input-btn:hover {
      background-color: #fecaca;
    }

    .clear-output-btn {
      background-color: #f3f4f6;
      color: #4b5563;
    }

    .clear-output-btn:hover {
      background-color: #e5e7eb;
    }

    .sample-btn,
    .swap-btn {
      background-color: #f3f4f6;
      color: #4b5563;
    }

    .sample-btn:hover,
    .swap-btn:hover {
      background-color: #e5e7eb;
    }

    .copy-btn {
      background-color: #dcfce7;
      color: #166534;
    }

    .copy-btn:hover {
      background-color: #bbf7d0;
    }

    .export-btn {
      background-color: #dbeafe;
      color: #1e40af;
    }

    .export-btn:hover {
      background-color: #bfdbfe;
    }

    .instructions {
      background: white;
      border-radius: 8px;
      padding: 25px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
      margin-bottom: 30px;
    }

    .instructions h2 {
      font-size: 1.25rem;
      margin-bottom: 15px;
      color: #1f2937;
      display: flex;
      align-items: center;
    }

    .instructions h2 i {
      color: #3b82f6;
      margin-right: 10px;
    }

    .instructions ul {
      padding-left: 20px;
      color: #4b5563;
    }

    .instructions li {
      margin-bottom: 8px;
    }

    #copy-notification,
    #export-notification {
      font-size: 13px;
      margin: 10px 0 0 25px;
      display: none;
      align-items: center;
    }

    #copy-notification {
      color: #10b981;
    }

    #export-notification {
      color: #3b82f6;
    }

    #copy-notification i,
    #export-notification i {
      margin-right: 5px;
    }

    /* 处理中动画 */
    @keyframes spin {
      to {
        transform: rotate(360deg);
      }
    }

    .fa-spinner {
      animation: spin 1s linear infinite;
    }
    
    @media (max-width: 768px) {
textarea {
    margin: 0;
    padding: 0;
}

}