* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 导航按钮样式 */
.nav-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    background-color: #fff;
    padding: 15px 0;
    margin-bottom: 30px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
}

.nav-button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: #f1f1f1;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    font-weight: 500;
}

.nav-button:hover {
    background-color: #e0e0e0;
}

.nav-button.active {
    background-color: #ff6b6b;
    color: white;
}

/* 内容区域样式 */
.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

/* 分类标题样式 */
.category {
    margin-bottom: 30px;
}

.category h2 {
    font-size: 18px;
    color: #333;
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 1px solid #eee;
}

/* 图片网格样式 */
.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.gallery-item {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
}

.image-container {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 宽高比 */
    overflow: hidden;
}

.image-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
}

.tag {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 5px 10px;
    background-color: #ff6b6b;
    color: white;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
}

.description {
    padding: 15px;
    min-height: 70px;
}

.description p {
    font-size: 14px;
    color: #555;
    margin: 0;
    user-select: all;
}

/* 响应式设计 */
@media (max-width: 900px) {
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .grid {
        grid-template-columns: 1fr;
    }
    
    .nav-buttons {
        flex-wrap: wrap;
    }
}