/* 设置全局样式：去除默认边距，设置字体、背景色和文字颜色 */
body {
  margin: 0;
  background: #f5f5f5;
  padding-top: 60px;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica,
    Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  color: #545454;
}

/* 页面主容器，最大宽度为1200px，居中对齐，四周有内边距 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* 页眉区域，横向排列，左右两端对齐，允许换行 */
.header {
  /* height: 50px; */
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

/* logo部分横向排列，间距为1rem */
.logo-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.logo-section {
  display: flex;
  align-items: center;
}

/* 导航链接样式：间距、无下划线、颜色为深灰色 */
.nav a {
  position: relative;
  margin-left: 2rem;
  text-decoration: none;
  color: #545454;
}

/* 底部横线效果：初始隐藏 */
.nav a::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 999px;
  width: 12px;
  height: 3px;
  background-color: #a1a1a1;
  opacity: 0;
  transition: opacity 0.3s ease;
}

/* 当前页面的激活样式 */
.nav a.active::after {
  opacity: 1;
}

.nav a:hover {
  color: #000;
}

/* 主体内容网格布局，默认三列，间距为2rem */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-wk {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  row-gap: 60px;
  max-width: 800px;
  margin: 0 auto;
  /* padding: 2rem; */
}

/* 设置卡片链接基础样式 */
.item {
  display: block; /* 让整个区域可点击 */
  text-decoration: none; /* 去除链接下划线 */
  color: inherit; /* 保持文字颜色一致 */
  overflow: hidden;
  transition: box-shadow 0.3s, transform 0.3s; /* 添加过渡动画 */
}

.item.large {
  grid-column: span 2; /* 占据两列 */
}

.item.small_2-1 {
  aspect-ratio: 2 / 1; /* 保持宽高比为 2:1 */
  border-radius: 12px;
}

.item.small_3-2 {
  aspect-ratio: 5 / 3;
  border-radius: 12px;
}

/* 图片区域，占满宽度 */
.item img {
  width: 100%;
  height: auto;
  object-fit: cover;
  object-position: center;
  border-radius: 12px;
  transition: opacity 0.3s ease-in-out;
}

/* 悬停时图片透明度降低 */
.item img:hover {
  opacity: 0.5;
  transition: opacity 0.5s ease-in-out;
}

.works-page .item img:hover {
  opacity: 1 !important;
  transition: none !important;
  cursor: default;
}

.index .item img {
  /* margin-bottom: 0.5rem; */
  aspect-ratio: 3 / 2;
}

.image-title {
  font-size: 16px;
  color: #545454;
  margin-bottom: 0.1rem;
}
.image-desc {
  font-size: 12px;
  color: #a1a1a1;
  margin-top: 0.1rem;
}

.works-title {
  text-align: center;
}

/* 联系我模块样式 */
.contact {
  margin-top: 3rem;
  display: flex;
  gap: 20px;
  padding: 15px 25px;
  /* background: rgba(255, 255, 255, 0.9);
  border-radius: 40px; */
  /* box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); */
  justify-content: center;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 5rem;
}

.contact img {
  width: 30px;
  height: 30px;
  transition: transform 0.3s ease;
}

.contact img:hover {
  transform: scale(1.1);
}

.contact video {
  width: 30px;
  height: 30px;
  transition: transform 0.3s ease;
  animation: play 1s linear infinite;
}

.contact video:hover {
  transform: scale(1.1);
}

.contact .qr-wrapper {
  position: relative;
  display: inline-block;
}

.contact .qr-image {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: 10px;
  width: 120px;
  height: 120px;
  background-color: #fff;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.15);
  z-index: 10;

  /* 初始隐藏 + 动画 */
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.qr-wrapper:hover .qr-image {
  opacity: 1;
  visibility: visible;
}

.qr-wrapper:active .qr-image {
  opacity: 1;
  visibility: visible;
}

/* 页脚样式 */
.footer {
  text-align: center;
  padding: 1rem 0;
  font-size: 12px;
}

/* title 居中文本*/
.title {
  text-align: center;
  margin-top: 5rem;
  margin-bottom: 2rem;
}

.title p {
  line-height: 2;
}

.title img {
  width: 100%;
  padding: 2rem;
  box-sizing: border-box;
  max-width: 800px;
  display: block;
  margin: 0 auto;
}

.Skills {
  font-size: 12px;
}

/* My Works 居中文本*/
.works {
  text-align: center;
  margin-top: 2rem;
  margin-bottom: 2rem;
}

/* 屏幕宽度小于900px时，布局变为两列 */
@media (max-width: 900px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 屏幕宽度小于600px时，布局变为一列 */
@media (max-width: 600px) {
  .grid {
    grid-template-columns: 1fr;
  }
  .grid-wk {
    gap: 8px;
    row-gap: 20px;
  }
  .container {
    padding: 1.5rem;
  }
  .item.small {
    grid-column: span 2; /* 占据两列 */
  }
  .item.small_2-1 {
    grid-column: span 2; /* 占据两列 */
  }
  .item.small_3-2 {
    grid-column: span 2; /* 占据两列 */
  }
}