html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background: #f9fafb;
    overflow: hidden;
    font-family: 'Lato', sans-serif;
  }
  
  #bg {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    display: block;
    cursor: crosshair;
  }
  
  #intro-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    pointer-events: none;
  }
  
  #intro-box {
    background: #ffffff;
    padding: 2.5rem 3rem;
    border-radius: 20px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18), 
                0 4px 12px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 600px;
    pointer-events: auto;
    cursor: default;
  }
  
  #name {
    font-size: clamp(2.5rem, 6vw, 4rem);
    color: black;
    font-weight: 700;
    margin: 0 0 1rem 0;
    letter-spacing: -0.02em;
  }
  
  #subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.25rem);
    color: #666;
    font-weight: 400;
    margin: 0 0 1.5rem 0;
    line-height: 1.5;
  }
  
  #description {
    color: #666;
    font-size: clamp(1rem, 2vw, 1.125rem);
    line-height: 1.6;
    margin: 0;
  }
  
  #description p {
    margin: 0 0 0.75rem 0;
  }
  
  #description p:last-child {
    margin-bottom: 0;
  }
  
  #tooltip {
    position: fixed;
    background: rgba(0, 0, 0, 0.85);
    color: white;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 14px;
    pointer-events: none;
    z-index: 10;
    display: none;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transform: scale(0.8) translateY(-5px);
    opacity: 0;
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), 
                opacity 0.2s ease-out;
  }
  
  #tooltip.tooltip-visible {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
  
  #status {
    position: fixed;
    top: 16px;
    right: 16px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 12px;
    pointer-events: none;
    z-index: 5;
    font-family: 'Courier New', monospace;
    line-height: 1.5;
  }