* {
      box-sizing: border-box;
      font-family: "Microsoft YaHei", sans-serif;
    }

    body {
      margin: 0;
      padding: 20px;
      background: #eef2f5;
    }

    .toolbar {
      background: #fff;
      padding: 12px 16px;
      border-radius: 10px;
      margin-bottom: 16px;
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
      align-items: center;
      box-shadow: 0 2px 6px #0001;
    }

    .tool-group {
      display: flex;
      gap: 6px;
      align-items: center;
      padding: 0 12px;
      border-left: 1px solid #eee;
    }

    .tool-group:first-child {
      border-left: none;
      padding-left: 0;
    }

    button {
      padding: 6px 10px;
      border: 1px solid #ddd;
      border-radius: 6px;
      background: #fff;
      cursor: pointer;
      font-size: 14px;
      white-space: nowrap;
    }

    button:hover {
      background: #f8f8f8;
    }

    input[type="color"] {
      width: 40px;
      height: 32px;
      padding: 0;
      border: none;
      cursor: pointer;
    }

    select {
      height: 32px;
      border-radius: 6px;
      border: 1px solid #ddd;
    }

    #page {
      width: 210mm;
      min-height: 297mm;
      background: white;
      margin: 0 auto;
      padding: 25mm;
      box-shadow: 0 0 12px #0002;
      outline: none;
      font-size: 16px;
      line-height: 1.7;
    }

    #page p {
      margin: 0 0 8px 0;
      padding: 0;
    }

    .action-bar {
      max-width: 210mm;
      margin: 16px auto;
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }