body {
  font-family: "Arial", sans-serif;
  background: #fef6ff;
  margin: 0;
  padding: 0;
  text-align: center;
  color: #333;
}

header {
  background: linear-gradient(135deg, #3d68ad, #c2e9fb);
  color: white;
  padding: 40px 20px;
}

h1 {
  margin: 0;
  font-size: 2.5em;
}

.years .buttons {
  margin: 40px 0;
}

.year-btn {
  display: inline-block;
  margin: 10px;
  padding: 15px 30px;
  background: #649de7;
  color: white;
  text-decoration: none;
  border-radius: 10px;
  font-size: 1.6em;
  transition: background 0.3s;
}

.year-btn:hover {
  background: #649de7;
}

.gallery {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin: 30px;
}

.photo {
  margin: 15px;
  max-width: 250px;
}

.photo img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.photo p {
  margin-top: 8px;
  font-size: 0.9em;
  color: #555;
}

/* 多张照片主题 */
.memory-group {
  margin: 20px;
  max-width: 520px;
  text-align: center;
}

.memory-group .images {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.memory-group img {
  width: 240px;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  transition: transform 0.3s;
}

.memory-group img:hover {
  transform: scale(1.05);
}

.memory-group p {
  margin-top: 12px;
  font-size: 1.2em;   
  line-height: 1.6;   
  color: #333;        
  font-weight: 500; 
}

.gallery {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin: 30px;
}

.photo {
  margin: 15px;
  max-width: 250px;
  text-align: center;
}

.photo img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  transition: transform 0.3s;
}

.photo img:hover {
  transform: scale(1.05);
}

.photo p {
  margin-top: 12px;
  font-size: 1.2em;   
  line-height: 1.6;   
  color: #333;        
  font-weight: 500;  
}

.slideshow-container {
  position: relative;
  max-width: 450px; /* 调整宽度 */
  margin: auto;
}

.slide {
  display: none;
}

.slide img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* 按钮样式：高度自动对齐图片中部 */
.prev, .next {
  cursor: pointer;
  position: absolute;
  top: 50%; /* 永远居中 */
  transform: translateY(-50%);
  padding: 12px;
  color: white;
  font-weight: bold;
  font-size: 24px;
  border-radius: 50%;
  user-select: none;
  background-color: rgba(0,0,0,0.3);
  text-decoration: none;
}

.next {
  right: 10px;
}

.prev {
  left: 10px;
}

.prev:hover, .next:hover {
  background-color: rgba(0,0,0,0.6);
}

/* 放大后的照片 */
img.enlarged {
  position: fixed;
  top: 50%;
  left: 50%;
  max-width: 60vw;   /* 最大宽度：屏幕宽度的 90% */
  max-height: 60vh;  /* 最大高度：屏幕高度的 90% */
  height: auto;      /* 高度自动，保持比例 */
  width: auto;       /* 宽度自动，保持比例 */
  transform: translate(-50%, -50%);
  z-index: 1000;
  box-shadow: 0 8px 20px rgba(0,0,0,0.6);
  border-radius: 10px;
  cursor: zoom-out; /* 鼠标提示缩小 */
  object-fit: contain; /* 确保图片完整显示 */
}

/* 背景遮罩 */
#overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.7);
  z-index: 999;
  display: none;
}

.bio {
  max-width: 800px;   /* 让文字区块更宽松 */
  margin: 0 auto;
  padding: 20px;
}

.bio h2 {
  font-size: 1.6em;
  margin-bottom: 15px;
}

.bio p {
  font-size: 1.3em;
  line-height: 1.8;
}