:root {
    --dark: #1f2937;
    --gray: #6b7280;
    --light-gray: #f3f4f6;
    --white: #fff;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-sm: .875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.1rem;
    --font-size-xl: 1.3rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.08);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.blog-hero {
    text-align: center;
    padding: 80px 20px 60px;
    background: linear-gradient(135deg, #f6f8fb 0%, #e9ecef 100%);
}

.blog-hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #0077BE 0%, #00CED1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blog-hero-subtitle {
    font-size: 1.3rem;
    color: var(--gray);
    font-weight: 500;
}

.blog-list-section {
    padding: 60px 20px;
    max-width: 900px;
    margin: 0 auto;
}

.blog-post-card {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e5e7eb;
    transition: var(--transition-base);
}

.blog-post-card:hover {
    transform: translateY(-2px);
}

.blog-post-card h2 {
    margin: 0 0 10px 0;
    font-size: var(--font-size-3xl);
    font-weight: 700;
}

.blog-post-card h2 a {
    color: #1e40af;
    text-decoration: none;
    transition: color 0.3s;
}

.blog-post-card h2 a:hover {
    color: #1e3a8a;
}

.blog-post-card .meta {
    color: var(--gray);
    font-size: var(--font-size-sm);
    margin-bottom: 10px;
}

.blog-post-card .tags {
    color: #9ca3af;
    font-size: 0.85rem;
}

.blog-article {
    max-width: 800px;
    margin: 60px auto;
    padding: 0 20px;
}

.blog-back-link {
    display: inline-block;
    margin-bottom: 30px;
    color: #0066cc;
    text-decoration: none;
    font-size: var(--font-size-base);
    transition: var(--transition-base);
}

.blog-back-link:hover {
    color: #0052a3;
    transform: translateX(-3px);
}

.blog-content {
    line-height: 1.8;
    font-size: var(--font-size-lg);
    color: var(--dark);
    font-family: var(--font-family);
}

.blog-content h1 {
    font-size: var(--font-size-4xl);
    margin-bottom: 20px;
    color: var(--dark);
    font-weight: 800;
    line-height: 1.2;
}

.blog-content h2 {
    font-size: var(--font-size-3xl);
    margin-top: 50px;
    margin-bottom: 20px;
    color: var(--dark);
    font-weight: 700;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--light-gray);
}

.blog-content h3 {
    font-size: var(--font-size-2xl);
    margin-top: 35px;
    margin-bottom: 15px;
    color: var(--dark);
    font-weight: 600;
}

.blog-content h4 {
    font-size: var(--font-size-xl);
    margin-top: 25px;
    margin-bottom: 12px;
    font-weight: 600;
}

.blog-content p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.blog-content a {
    color: #0066cc;
    text-decoration: underline;
    transition: color 0.2s ease;
}

.blog-content a:hover {
    color: #0052a3;
}

.blog-content img {
    max-width: 100%;
    height: auto;
    margin: 30px 0;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    display: block;
}

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

.blog-content li {
    margin-bottom: 12px;
    line-height: 1.7;
}

.blog-content ul ul,
.blog-content ol ol {
    margin: 10px 0;
}

.blog-content code {
    background: var(--light-gray);
    padding: 3px 8px;
    border-radius: 4px;
    font-family: 'Courier New', Consolas, monospace;
    font-size: 0.9em;
    color: #e83e8c;
}

.blog-content pre {
    background: var(--light-gray);
    padding: 20px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 25px 0;
    border: 1px solid #e5e7eb;
}

.blog-content pre code {
    background: none;
    padding: 0;
    color: var(--dark);
    font-size: 0.95em;
}

.blog-content blockquote {
    border-left: 4px solid #0066cc;
    padding: 20px 25px;
    margin: 30px 0;
    background: #f9fafb;
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--gray);
    font-style: italic;
}

.blog-content blockquote p {
    margin: 0;
}

.blog-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
}

.blog-content th,
.blog-content td {
    border: 1px solid #e5e7eb;
    padding: 12px 16px;
    text-align: left;
}

.blog-content th {
    background: var(--light-gray);
    font-weight: 600;
    color: var(--dark);
}

.blog-content strong {
    font-weight: 700;
    color: var(--dark);
}

.blog-content em {
    font-style: italic;
}

.related-posts {
    margin-top: 60px;
    padding: 35px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.related-posts h3 {
    margin-top: 0;
    margin-bottom: 25px;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--dark);
}

.related-posts ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.related-posts li {
    margin: 18px 0;
    padding-left: 20px;
    position: relative;
}

.related-posts li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: #0066cc;
    font-weight: bold;
}

.related-posts a {
    color: #0066cc;
    text-decoration: none;
    font-size: var(--font-size-lg);
    font-weight: 500;
    transition: var(--transition-base);
}

.related-posts a:hover {
    color: #0052a3;
    text-decoration: underline;
}
.blog-content img {
    cursor: zoom-in;
}

.lightbox {
    display: none;
    position: fixed;
    z-index: 9999;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    cursor: zoom-out;
}

.lightbox img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: none;
    max-height: none;
    width: auto;
    height: auto;
    cursor: zoom-out;
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
}


@media (max-width: 768px) {
    .blog-article {
        margin: 30px auto;
        padding: 0 15px;
    }
    
    .blog-content {
        font-size: var(--font-size-base);
    }
    
    .blog-content h1 {
        font-size: var(--font-size-3xl);
    }
    
    .blog-content h2 {
        font-size: var(--font-size-2xl);
        margin-top: 35px;
    }
    
    .blog-content h3 {
        font-size: var(--font-size-xl);
    }
    
    .related-posts {
        padding: 25px 20px;
    }
}