/* 关于我们页面自定义样式 */

/* 隐藏页面顶部的小圆点 */
body::before {
    display: none !important;
}

/* 页面标题区域样式 */
.about-header {
    background-color: #14183E;
    padding: 40px 0 30px;
    margin-top: 0;
    position: relative;
    min-height: 120px;
    display: flex;
    align-items: center;
}

.about-header h1 {
    color: #fff;
    font-size: 2rem;
    margin-bottom: 5px;
    font-weight: 700;
    position: relative;
    display: inline-block;
}

.about-header h1:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: #4B9EFF;
}

.about-header .subtitle {
    color: #4B9EFF;
    font-size: 1rem;
    margin-bottom: 0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 导航菜单样式 - 垂直排列 */
.about-nav {
    background-color: #f0f4ff;
    border-radius: 10px;
    padding: 20px 15px;
    position: relative;
    z-index: 100;
    height: 100%;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.about-nav .nav-item {
    padding: 0;
    text-align: left;
    position: relative;
    margin-bottom: 15px;
}

.about-nav .nav-item:last-child {
    margin-bottom: 0;
}

.about-nav .nav-item a {
    color: #14183E;
    font-weight: 500;
    text-decoration: none;
    display: block;
    padding: 15px;
    transition: all 0.3s ease;
    font-size: 1rem;
    border-radius: 8px;
}

.about-nav .nav-item a:hover {
    color: #4B9EFF;
    background-color: rgba(75, 158, 255, 0.05);
}

.about-nav .nav-item a.active {
    color: #4B9EFF;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(75, 158, 255, 0.15);
    position: relative;
}

.about-nav .nav-item a.active:before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 70%;
    background-color: #4B9EFF;
    border-radius: 0 2px 2px 0;
}

.about-nav .nav-item a i {
    margin-right: 12px;
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
    color: #4B9EFF;
}

/* 主内容区域样式 */
.about-content {
    padding: 30px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    min-height: 500px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .about-nav {
        border-radius: 0;
        margin-bottom: 20px;
    }
    
    .about-nav .nav-item {
        margin-bottom: 10px;
    }
    
    .about-nav .nav-item a {
        padding: 12px;
        font-size: 0.9rem;
    }
    
    .about-nav .nav-item a i {
        margin-right: 10px;
        font-size: 1rem;
    }
    
    .about-content {
        padding: 15px;
    }
}