/* main.css */
@import url("./root.css");
html {
  font-size: 1vw;
  overflow-x: hidden;
}

/* 顶部大图与标语 */
.main-hero {
  position: relative;
  height: 47rem;
}

/* 轮播容器样式 */
.main-carousel {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.main-carousel-images {
  position: relative;
  width: 100%;
  height: 100%;
}

.main-hero-img {
  position: absolute;
  width: 90rem;
  height: 47rem;
  object-fit: cover;
  left: 0rem;
  top: 0rem;
  opacity: 0; /* 初始状态下所有图片透明 */
  transition: opacity 1s ease-in-out; /* 添加淡入淡出动画 */
}

.main-hero-img:nth-child(1) {
  opacity: 1; /* 第一张图片初始不透明 */
  transition: none; /* 禁用初始的淡入淡出动画 */
}

.main-hero-img.active {
  opacity: 1; /* 当前显示的图片完全不透明 */
}
.main-hero-desc {
  position: absolute;
  right: 0;
  top: 20rem;
  width: 60rem;
  height: 27rem;
  background: var(--theme-banner);
  color: #fff;
  padding: 2rem;
  box-sizing: border-box;
}
.main-hero-title {
  margin-top: 2.3rem;
  margin-left: 0rem;
  font-size: 3.8rem;
  font-weight: bold;
  line-height: 1.3;
}
.main-hero-sub {
  margin-top: 1.5rem;
  margin-left: 0rem;
  font-size: 1.2rem;
}
.main-hero-more {
  margin-top: 1.5rem;
  text-align: right;
  font-size: 1rem;
  padding-right: 6rem;
}
/* main.css 页面样式 */
body {
  margin: 0;
  background: #f2f2f2;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}
.main-section {
  margin: 0 auto;
}
.recent-news,
.research-block {
  margin-bottom: 3rem;
}
.card-list {
  display: flex;
  gap: 1.5rem;
}
.card {
  background: var(--theme-color1);
  color: #fff;
  padding: 2rem;
  flex: 1;
  position: relative;
}
.card.more {
  background: #fff;
  color: var(--theme-color1);
  border: 0.125rem solid var(--theme-color1);
  text-align: right;
  font-weight: bold;
  cursor: pointer;
}
.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.research-item {
  background: var(--theme-color1);
  color: #fff;
  padding: 1.5rem;
  font-size: 1.1rem;
}
.professor-block {
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}
.professor-info {
  display: flex;
  height: 32rem;
  width: 68rem;
  gap: 3rem;
  align-items: center;
  background: var(--theme-color1);
  color: #fff;
  padding: 2rem 2rem;
  box-sizing: border-box;
}
.professor-photo {
  width: 32rem;
  height: 24rem;
  object-fit: cover;
}
.professor-detail {
  flex: 1;
}
.professor-stats {
  min-width: 11.25rem;
  text-align: left;
  font-size: 1.2rem;
}
.professor-stats strong {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 400;
  display: block;
}
.professor-stats p {
  display: block;
  margin: 0;
  padding: 0.5rem 0;
  text-align: center;
  font-size: 1rem;
  font-weight: 200;
}
.divider {
  width: 8rem;
  height: 0.5px;
  background-color: rgba(255, 255, 255, 0.2);
  margin: 0.5rem 0;
}
.professor-eval {
  margin-top: 2rem;
  font-size: 1rem;
  color: #fff;
}
.gallery {
  display: flex;
  gap: 0.5rem;
  margin: 1.5rem 0;
}
.gallery img {
  width: 7.5rem;
  height: 5rem;
  object-fit: cover;
}

/* professor background block */
.professor-bg-block {
  background: url("images/blank.jpg") center/cover no-repeat;
  padding: 10rem;
  height: 40rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.block-title {
  color: var(--theme-color1);
  font-size: 2.2rem;
  font-weight: 400;
  margin: 3.5rem 0 2rem 0;
  padding: 0rem 20rem;
}

.image-index-item {
  width: 35rem !important;
}

/* Intro component styles */
.intro-component {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: flex-start;
  box-sizing: border-box;
  padding: 0.5rem 0rem 0rem 1.5rem;
  color: #fff;
}

.intro-title {

  height: 3rem;
  margin-top: 3rem;
  font-size: 2rem;
  font-weight: 300;
  z-index: 1;
  color: #fff;
}

.intro-desc {
  height: 5rem;
  font-size: 1.1rem;
  margin-top: 0.8rem;
  line-height: 1.5;
  font-weight: 300;
  letter-spacing: 0.05rem;
  z-index: 1;
  color: #fff;
}

.intro-more {
  color: #fff;
  font-weight: bold;
  text-decoration: none;
  z-index: 1;
}

.hover-bg {
  transition: opacity 0.3s;
  opacity: 1;
  height: 100%;
  width: 100%;
  position: absolute;
  left: 0;
  top: 0;
}

.hover-bg-blue {
  height: 100%;
  width: 100%;
  position: absolute;
  left: 0;
  top: 0;
  background: var(--theme-color1);
}

.intro-component:hover .hover-bg {
  opacity: 0;
}

.image-index-img {
  height: 75% !important;
}