/* --- 品牌页面主体容器 --- */
.brand-container {
    width: 100%;
    margin: 140px auto 100px; /* 140px 避开固定页头 */
}

/* 折叠状态（默认） */
.article-item {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 20px;
    margin-bottom: 20px;
    border-top: 1px solid #e0e0e0;
    background-color: transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

/* 左侧信息区 */
.article-info {
    flex: 1;  /* 左侧占剩余空间 */
    max-width: calc(100% - 240px); 
    padding-right: 20px;
}

/* 标题样式 */
.article-title {
    font-size: 32px;
    font-weight: 300;
    color: #d1d1d1;
    margin-bottom: 15px;
    letter-spacing: 1px;
    font-family: "Optima", serif;
    text-transform: uppercase;
    transition: color 0.3s ease;
}

.article-item:hover .article-title {
    color: #333;
}

/* 发布日期 */
.publish-date {
    font-size: 11px;
    color: #999;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

/* 摘要 */
.article-desc {
    font-size: 14px;
    line-height: 2;
    color: #444;
    text-align: justify;
}

.article-desc p {
    margin-bottom: 10px;
}

/* 右侧媒体区 */
.article-media {
    width: 200px;  /* 固定宽度 */
    margin-left: 20px;
}

/* 图片容器 */
.img-zoom-wrapper {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.article-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 1.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.article-item:hover img {
    transform: scale(1.05);
}

/* 正文区（默认隐藏） */
.article-full-content {
    display: none;  /* 默认隐藏正文 */
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #f0f0f0;
}

/* 展开状态 */
.article-item.expanded {
    flex-direction: column;  /* 改为纵向排列 */
    background-color: #f9f9f9;  /* 浅灰色背景 */
    border-left: 4px solid #333; /* 左边框标记 */
    padding: 20px;
    margin: 10px 0;
}

.article-item.expanded .article-info {
    width: 100%;
    text-align: center;
    padding-right: 0;
}

.article-item.expanded .article-title {
    text-align: center;
    width: 100%;
    color: #333;
}

.article-item.expanded .article-media {
    display: none;  /* 隐藏封面 */
}

.article-item.expanded .article-full-content {
    display: block;  /* 显示正文 */
}

.article-item.expanded .article-desc {
    display: none;  /* 隐藏摘要 */
}

/* --- 响应式优化 --- */
@media (max-width: 1024px) {
    .brand-container { width: 90%; }
    .article-item {
        flex-direction: column;
    }
    .article-info {
        padding-right: 0;
        margin-bottom: 20px;
    }
    .article-media {
        width: 100%;
        margin-left: 0;
    }
    .img-zoom-wrapper {
        height: 200px;
    }
}