* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  overflow: hidden;
  background: #000;
  font-family: Arial, sans-serif;
}

/* Spline 全屏 */
spline-viewer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* 文字层 */
.overlay {
  position: absolute;
  top: 30%;
  left: 10%;
  color: white;
  z-index: 2;
}

.overlay h1 {
  font-size: 48px;
  margin-bottom: 10px;
}

.overlay p {
  font-size: 18px;
  opacity: 0.7;
}