/* 渐变动画 */
  @keyframes gradientAnimation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }

  /* 上下浮动动画 */
  @keyframes floatUpDown {
    0%, 100% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(-10px);
    }
  }

  /* 加载器样式 */
  .gradient-loader {
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-family: var(--font-family), serif;
    color: white;
    text-transform: uppercase;
    background: linear-gradient(45deg, #5F9EA0, #4682B4, #B0C4DE);
    background-size: 300% 300%;
    animation: gradientAnimation 3s ease infinite;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
    overflow: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
  }

  .gradient-loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  /* 主标题样式 */
  .loader-title {
    font-size: 3rem; /* 调整大小 */
    font-weight: bold;
    letter-spacing: 1px;
  }

  /* 上下浮动的副标题 */
  .loading-text {
  animation: floatUpDown 2s ease-in-out infinite;
  text-transform: none;
  font-size: 1.5rem;
  margin-top: 1.5rem; /* 原来是 0.5rem */
}