body {
      font-family: 'Noto Sans TC', sans-serif;
      text-align: center;
      background-color: #f0f8ff;
      margin: 0;
      padding: 20px;
    }
    #clock-container {
      display: flex;
      justify-content: center;
      margin: 20px;
    }
    canvas {
      background-color: #fff;
      border: 5px solid #0D254D;
      border-radius: 50%;
      box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    }
    #controls {
      margin: 15px auto;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 10px;
    }
    .control-buttons {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 10px;
    }
    button {
      padding: 10px 18px;
      font-size: 18px;
      background-color: #0D254D;
      color: #fff;
      border: none;
      border-radius: 10px;
      cursor: pointer;
    }
    button:hover {
      background-color: #1E3A8A;
    }
    #message {
      font-size: 22px;
      font-weight: bold;
      color: #333;
      margin-top: 15px;
    }
    #hint {
      font-size: 20px;
      color: #1E3A8A;
      font-weight: 600;
      margin-bottom: 10px;
      height: 28px;
    }
    #time-values {
      display: flex;
      justify-content: center;
      gap: 30px;
      font-size: 20px;
      font-weight: 600;
      color: #0D254D;
      margin-top: 10px;
    }