/* 活动专区页面样式 */

/* 主内容区域 */
.activity-main {
    background: #FFF;
    min-height: calc(100vh - 200px);
    padding: 20px 0;
}

.activity-layout {
    display: flex;
    gap: 52px;
    align-items: flex-start;
    padding: 24px;
    border-radius: 12px;
    border: 1px solid #E3E4E9;
    background: #F7F8F9;
}

/* 左侧活动导航 */
.activity-sidebar {
    width: 228px;
    border-radius: 8px;
    overflow: hidden;
}

.sidebar-header {
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: black;
}

.sidebar-icon {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.sidebar-header h2 {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
}

.activity-nav {
    padding: 0;
    margin: 0;
}
.main-nav{
    background: white;
}
.activity-nav-item {
    display: block;
    padding: 8px 20px;
    color: #333;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 16px;
    line-height: 1.4;
    position: relative;
    border-radius: 8px;
    margin-top:1px;
}

.activity-nav-item:hover {
    background: linear-gradient(180deg, #FF8D24 0%, #FFAD1F 100%);
    color: white;
}

.activity-nav-item.active {
    background: linear-gradient(180deg, #FF8D24 0%, #FFAD1F 100%);
    color: white;
    font-weight: 600;
    border-left: 3px solid #FFA500;
    border-radius: 8px;
    background: linear-gradient(180deg, #FF8D24 0%, #FFAD1F 100%);
}

.activity-nav-item:last-child {
    border-bottom: none;
}

/* 右侧内容区域 */
.activity-content {
    flex: 1;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

/* 活动面板 */
.activity-panel {
    display: none;
}

.activity-panel.active {
    display: block;
}

/* 活动横幅 */
.activity-banner {
    position: relative;
}



/* 活动信息 */
.activity-info {
    padding: 24px;
    border-bottom: 1px solid #f0f0f0;
}

.activity-title {
    font-size: 24px;
    margin: 0 0 8px 0;
    font-weight: 700;
    color: #23252C;
}

.activity-date {
    color: #666;
    font-size: 14px;
    margin: 0;
}

/* 活动详情 */
.activity-details {
    padding: 24px;
}

.detail-section {
    margin-bottom: 30px;
}

.detail-section:last-child {
    margin-bottom: 0;
}

.section-title {
    font-size: 16px;
    color: #333;
    margin: 0 0 4px 0;
    font-weight: 600;
    display: inline-block;
}

.section-content {
    line-height: 1.8;
    color: #555;
    font-size: 14px;
}

.section-content p {
    margin: 0;
}