/* 全局变量覆盖：减少卡片之间的间距 */
:root {
    --section-separation: 0px !important;
    --main-top-padding: 0px !important;
}

/* =========================================
   华尔街见闻风格 - 分类导航
   ========================================= */

.main-category-nav {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    background: #ffffff;
    padding: 0;
    margin: 0;
    box-shadow: none;
    border: none;
    border-bottom: 1px solid #f0f0f0;
}

/* 暗色模式 */
[data-scheme="dark"] .main-category-nav {
    background: #1a1a2e;
    border-bottom-color: #333;
}

.main-category-nav .category-list {
    display: flex;
    overflow-x: auto;
    gap: 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
    white-space: nowrap;
    flex-wrap: nowrap;
    padding: 0 12px;
}

.main-category-nav .category-list::-webkit-scrollbar {
    display: none;
}

/* 分类按钮 - 纯文字下划线样式 */
.main-category-nav .category-item {
    display: inline-block;
    padding: 10px 14px;
    border-radius: 0;
    color: #333;
    font-size: 1.4rem;
    font-weight: 400;
    text-decoration: none;
    transition: all 0.2s ease;
    box-shadow: none;
    border: none;
    background: transparent !important;
    position: relative;
}

[data-scheme="dark"] .main-category-nav .category-item {
    color: #ccc;
}

/* 第一个分类（当前分类）高亮 */
.main-category-nav .category-item:first-child {
    color: #1a73e8;
    font-weight: 600;
}

.main-category-nav .category-item:first-child::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 14px;
    right: 14px;
    height: 2px;
    background: #1a73e8;
}

.main-category-nav .category-item:hover {
    color: #1a73e8;
    filter: none;
    box-shadow: none;
}