.page-content code, .page-content pre {
    background-color: var(--border-color)
}

.single-page {
    position: relative;
    margin: 40px 0;
    background-color: var(--bg-primary);
    color: var(--text-primary)
}

.content-wrapper {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px
}

.page-title {
    font-size: 2rem;
    line-height: 1.2;
    margin: 20px 0;
    font-weight: 600
}

.page-content {
    line-height: 1.7
}

.page-content p {
    margin-bottom: 1.25rem
}

.group-meta p {
    margin-bottom: 5px
}

.page-content h2, h3, h4, h5 {
    font-size: 20px;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 500
}

.page-content a {
    color: var(--accent-color);
    text-decoration: underline;
    transition: opacity .2s;
    font-weight: 500
}

.page-content a:hover {
    opacity: .8
}

.page-content ol, .page-content ul {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem
}

.page-content li {
    margin-bottom: .5rem
}

.page-content blockquote {
    border-left: 4px solid var(--accent-color);
    padding-left: 1.5rem;
    margin: 1.5rem 0;
    color: var(--text-secondary);
    font-style: italic
}

.page-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0
}

.page-content code {
    color: var(--text-primary);
    padding: .2rem .4rem;
    border-radius: 4px;
    font-size: .9em;
    font-family: Monaco, 'Courier New', monospace
}

.page-content pre {
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0
}

.page-content pre code {
    background-color: transparent;
    padding: 0
}

.error-404-wrapper {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 20px
}

.error-404-container {
    max-width: 600px;
    text-align: center
}

.error-404-image {
    margin-bottom: 40px
}

.error-404-image img {
    max-width: 100%;
    height: auto;
    width: 400px
}

.error-404-title {
    font-size: 32px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.3
}

.error-404-description {
    font-size: 16px;
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 40px
}

.error-404-search {
    margin-bottom: 30px
}

.btn-return-home {
    display: inline-block;
    padding: 10px 25px;
    background: var(--accent-color);
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 500;
    transition: .3s
}

.btn-return-home:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, .1)
}

@media (max-width: 768px) {
    .error-404-wrapper {
        padding: 40px 20px
    }

    .error-404-image img {
        width: 280px
    }

    .error-404-title {
        font-size: 24px
    }

    .error-404-description {
        font-size: 14px
    }
}

@media (max-width: 480px) {
    .error-404-image img {
        width: 220px
    }

    .error-404-title {
        font-size: 20px
    }
}