body {
      margin: 0;
      padding: 0;
      font-family: 'Consolas', 'Courier New', monospace;
      /* background-image: url('https://picsum.photos/seed/stars/1920/1080'); */
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      color: #fff;
      /* min-height: 100vh; */
    }

    .container {
      width: 95%;
      max-width: 1400px;
      margin: 20px auto;
      background-color: rgba(0, 0, 0, 0.8);
      border-radius: 10px;
      overflow: hidden;
      /* box-shadow: 0 0 20px rgba(0, 0, 0, 0.8); */
      position: relative;
    }

    .header {
      text-align: center;
      padding: 15px;
      background-color: rgba(250, 247, 247, 0.9);
      font-size: 24px;
      font-weight: bold;
      color: #fff;
      border-bottom: 1px solid #333;
    }

    .main-content {
      display: flex;
      height: calc(100vh - 100px);
    }

    .left-panel,
    .center-panel {
      flex: 1;
      padding: 15px;
      /* overflow-y: auto; */
      border-right: 1px solid #333;
      background-color: #f2ebeb;
      color: #0e0e0e;
    }

    .left-panel textarea {
      width: 100%;
      height: 100%;
      background: transparent;
      border: none;
      color: #111111;
      font-family: 'Consolas', monospace;
      font-size: 14px;
      resize: none;
      outline: none;
      line-height: 1.5;
    }

    .center-panel textarea {
      width: 100%;
      height: 100%;
      background: transparent;
      border: none;
      color: #060606;
      font-family: 'Consolas', monospace;
      font-size: 14px;
      resize: none;
      outline: none;
      line-height: 1.5;
    }

    .right-panel {
      width: 250px;
      padding: 15px;
      background-color: rgba(0, 0, 0, 0.9);
      border-left: 1px solid #333;
    }

    .right-panel button {
      width: 100%;
      margin-bottom: 10px;
      padding: 8px;
      background-color: #2c2c2c;
      color: #fff;
      border: none;
      border-radius: 4px;
      cursor: pointer;
      font-size: 14px;
    }

    .right-panel button:hover {
      background-color: #444;
    }

    .checkbox-group {
      margin-top: 15px;
    }

    .checkbox-group label {
      display: block;
      margin: 5px 0;
      font-size: 13px;
      color: #ccc;
    }

    .checkbox-group input[type="checkbox"] {
      margin-right: 5px;
    }

    .footer {
      display: flex;
      justify-content: space-between;
      padding: 10px;
      background-color: rgba(0, 0, 0, 0.9);
      font-size: 13px;
      color: #aaa;
    }

    .btn {
      padding: 6px 12px;
      background-color: #2c2c2c;
      color: #fff;
      border: none;
      border-radius: 4px;
      cursor: pointer;
    }

    .btn:hover {
      background-color: #444;
    }

    /* 按钮容器：控制整体布局 */
    .button-container {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      /* 按钮之间统一间距 */
      margin: 16px 0;
      /* 上下留白，避免粘连 */
      align-items: center;
      /* 垂直居中对齐 */
    }

    /* 按钮基础样式 */
    .btn {
      padding: 8px 12px;
      background: #3a3a3a;
      color: #fff;
      border: 1px solid #555;
      border-radius: 4px;
      cursor: pointer;
      font-size: 13px;
      white-space: nowrap;
      transition: background 0.2s;
    }

    .btn:hover {
      background: #4a4a4a;
    }

    /* JSON条数输入框样式 */
    .json-count-input {
      width: 56px;
      height: 34px;
      /* 与按钮等高 */
      padding: 0 6px;
      margin: 0;
      background: #2c2c2c;
      color: #fff;
      border: 1px solid #555;
      border-radius: 4px;
      font-size: 13px;
      text-align: center;
      box-sizing: border-box;
    }

    .json-count-input:focus {
      outline: none;
      border-color: #007acc;
    }

    /* 输入框 + 按钮 组合：视为一个整体 */
    .btn-pair {
      display: flex;
      /* align-items: center; */
      gap: 6px;
      /* 输入框和按钮之间小间距 */
    }

    /* 小屏幕适配：允许换行 */
    @media (max-width: 768px) {
      .button-container {
        gap: 10px;
      }

      .btn {
        padding: 6px 10px;
        font-size: 12px;
      }

      .json-count-input {
        width: 50px;
        padding: 0 4px;
        font-size: 12px;
      }
    }