@media (min-width: 768px) {
    .container {
        padding: 0 15px 0 15px;
        width: 750px;
        margin: 0 auto;
    }
}

@media (min-width: 992px) {
    .container {
        padding: 0 15px 0 15px;
        width: 970px;
        margin: 0 auto;
    }
}

h2 {
    color: #16a085;
    font-size: 32px;
    margin: 15px 0 10px 0;
    font-weight: bold;
    line-height: 1.3;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    margin: 10px 0 20px 0;
    font-size: 14px;
    color: #999;
    border-bottom: 2px solid #e8f5e9;
    padding-bottom: 15px;
}

.article-description {
    background: #f9f9f9;
    padding: 15px 20px;
    border-left: 4px solid #16a085;
    margin: 20px 0;
    font-size: 16px;
    color: #666;
    line-height: 1.6;
    border-radius: 0 4px 4px 0;
}

.article-content {
    font-size: 18px;
    line-height: 1.8;
    color: #34495e;
    margin: 30px 0;
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
    color: #16a085;
    margin: 30px 0 15px 0;
    font-weight: bold;
}

.article-content h1 {
    font-size: 28px;
    border-bottom: 2px solid #e8f5e9;
    padding-bottom: 10px;
}

.article-content h2 {
    font-size: 24px;
}

.article-content h3 {
    font-size: 20px;
}

.article-content p {
    margin-bottom: 20px;
}

.article-content a {
    color: #16a085;
    text-decoration: none;
}

.article-content a:hover {
    text-decoration: underline;
}

.article-content ul,
.article-content ol {
    margin: 20px 0;
    padding-left: 30px;
}

.article-content li {
    margin-bottom: 10px;
    line-height: 1.8;
}

.article-content blockquote {
    background: #e8f5e9;
    border-left: 4px solid #16a085;
    margin: 20px 0;
    padding: 15px 20px;
    border-radius: 4px;
    color: #666;
}

.article-content code {
    background: #f5f5f5;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: Consolas, Monaco, monospace;
    font-size: 0.9em;
    color: #d35400;
}

.article-content pre {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 20px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 20px 0;
}

.article-content pre code {
    background: none;
    color: inherit;
    padding: 0;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.article-content th,
.article-content td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
}

.article-content th {
    background: #e8f5e9;
    color: #16a085;
    font-weight: bold;
}

.article-content img {
    max-width: 100%;
    height: auto;
    margin: 20px 0;
    border-radius: 4px;
}

.article-footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 2px solid #e8f5e9;
}

.back-link {
    display: inline-block;
    color: #16a085;
    text-decoration: none;
    font-size: 16px;
    font-weight: bold;
    transition: color 0.3s;
}

.back-link:hover {
    color: #0d8a6e;
}