/* 英雄区 */
.hero {
  height: 100vh;
  min-height: 700px;
  background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
    url("https://mjzhcx.oss-cn-beijing.aliyuncs.com/pic/wangye/shouye.png")
      no-repeat center center/cover;
  display: flex;
  align-items: center;
  text-align: center;
  color: white;
  position: relative;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 20px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero p {
  font-size: 1.5rem;
  margin-bottom: 30px;
  opacity: 0.9;
}