body {
  background-color: #fff9c4;
  height: 100vh;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  /* 夏日清新手写字体 */
  font-family: "Segoe Print", cursive, sans-serif;
  font-size: 48px;
  color: #e67700;
  /* 夏日纹理背景 */
  background-image: radial-gradient(#ffeb99 10%, transparent 11%),
                    radial-gradient(#ffeb99 10%, transparent 11%);
  background-size: 30px 30px;
  background-position: 0 0, 15px 15px;
  /* 文字阴影 清爽质感 */
  text-shadow: 2px 2px 4px rgba(255, 153, 0, 0.3);
}