* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      cursor: none;
    }

    body {
      background: #000;
      overflow: hidden;
      font-family: 'Georgia', serif;
      cursor: none;
      user-select: none;
    }

    canvas {
      display: block;
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      max-width: 100%;
      max-height: 100%;
      /* color:#006016;
      color:#00df16;
      color:#04822c;
      color:#0c7400; */
    }

    .fullscreen-btn {
      position: fixed;
      bottom: 20px;
      right: 20px;
      width: 40px;
      height: 40px;
      background: rgba(255, 255, 255, 0.2);
      border: 2px solid rgba(255, 255, 255, 0.4);
      border-radius: 8px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 8px;
      transition: all 0.3s ease;
      z-index: 1000;
    }

    .fullscreen-btn:hover {
      background: rgba(255, 255, 255, 0.3);
      border-color: rgba(255, 255, 255, 0.6);
      cursor: pointer;
    }

    .fullscreen-btn svg {
      width: 24px;
      height: 24px;
      color: white;
      cursor: pointer;
    }