/* 帮助中心页面特定样式 */
.help-hero {
    background-image: url('files/background_helpCenter.png');
    background-size: cover;
    background-position: center;
    color: #fff;
    text-align: center;
    padding: 100px 0;
    margin-top: 70px;
}

.help-hero h1 {
    font-size: 3em;
    margin-bottom: 20px;
}

.help-categories {
    padding: 80px 0;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.category-item {
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.category-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.category-item img {
    width: 60px;
    margin-bottom: 20px;
}

.category-item h3 {
    margin-bottom: 15px;
    color: #39bced;
}

.category-item ul {
    list-style-type: none;
    padding: 0;
}

.category-item li {
    margin-bottom: 10px;
}

.category-item a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s;
}

.category-item a:hover {
    color: #39bced;
}

.video-link::before {
    content: '\25B6';
    margin-right: 5px;
    color: #39bced;
}

@media (max-width: 768px) {
    .category-grid {
        grid-template-columns: 1fr;
    }
}