/* 共用的页面头部样式 */
.page-header {
  height: 50vh;
  background: linear-gradient(
    to right,
    var(--primary-color),
    var(--secondary-color)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--light-color);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header h1 {
  font-size: 3em;
  position: relative;
  z-index: 1;
}

.page-header p {
  max-width: 600px;
  margin: 20px auto 0;
  font-size: 1.2em;
}

.page-header .shape {
  z-index: 0;
}