header .mask {
  text-indent: -9999%;
  background: rgba(14, 14, 37, 0.54);
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}
.container > div h3 {
  font-size: 2.4rem;
  font-weight: 600;
  margin-top: 40px;
  padding: 20px 0;
}
.container {
    width: 100%;
    max-width: 1024px;
    margin: 200px auto 0;
    position: relative;
    z-index: 2;
}
.image-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
        }

       .image-item {
            position: relative;
            flex: 1 0 auto;
            max-width: 250px;
            overflow: hidden;
            border-radius: 5px;
            box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease;
        }

       .image-item:hover {
            transform: scale(1.05);
             /* 鼠标悬停时亮度增加到 120% */
            filter: brightness(120%);
        }

       .image-item img {
            width: 100%;
            height: auto;
            display: block;
            height: 200px;
    object-fit: cover;
             /* 初始亮度 */
            filter: brightness(100%);
            transition: filter 0.3s ease;
        }

       .image-description {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background-color: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 10px;
            transition: transform 0.3s ease;
        }

       .image-item:hover .image-description {
            transform: translateY(0);
        }

       .image-label {
            position: absolute;
            top: 10px;
            left: 10px;
            background-color: #ff5722;
            color: white;
            padding: 5px 10px;
            border-radius: 3px;
            font-size: 12px;
            z-index: 999;
        }