.article-content {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #222;
    line-height: 1.7;
    max-width: 800px;
    margin: 0 auto;
    padding: 140px 20px;
    background-color: #fff;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    border-radius: 16px;
}

.article-content h1 {
    font-size: 2.4rem;
    margin-bottom: 20px;
    color: #2c3e50;
    border-left: 5px solid #6366f1;
    padding-left: 15px;
}

.article-content h2 {
    font-size: 1.6rem;
    margin-top: 40px;
    margin-bottom: 15px;
    color: #333;
    border-bottom: 2px solid #eee;
    padding-bottom: 5px;
}

.article-content h3 {
    font-size: 1.3rem;
    margin-top: 25px;
    color: #444;
}

.article-content p {
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.article-content ul,
.article-content ol {
    padding-left: 25px;
    margin-bottom: 20px;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content blockquote {
    margin: 30px 0;
    padding: 20px 25px;
    background: #f8f9fa;
    border-left: 4px solid #6366f1;
    font-style: italic;
    color: #555;
    border-radius: 8px;
}

.article-content a {
    color: #6366f1;
    text-decoration: none;
    border-bottom: 1px dashed #6366f1;
    transition: all 0.2s ease-in-out;
}

.article-content a:hover {
    color: #4f46e5;
    border-bottom-style: solid;
}

@media (max-width: 768px) {
    .article-content {
        padding: 100px 15px;
    }

    .article-content h1 {
        font-size: 1.8rem;
    }

    .article-content h2 {
        font-size: 1.3rem;
    }

    .article-content h3 {
        font-size: 1.15rem;
    }
}