.page-hero { background: var(--gradient-hero); color: var(--white); padding: 140px 0 80px; text-align: center; }
.page-hero h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; margin-bottom: 16px; }
.page-hero p { font-size: 1.125rem; color: rgba(255,255,255,0.8); }

.articles-section { padding: 80px 0; }
.articles-layout { display: grid; grid-template-columns: 1fr 320px; gap: 50px; align-items: start; }
.articles-filter { display: flex; gap: 12px; margin-bottom: 40px; flex-wrap: wrap; }
.filter-btn { padding: 10px 24px; background: var(--gray-100); color: var(--gray-700); border: none; border-radius: var(--radius-full); font-size: 0.95rem; font-weight: 500; cursor: pointer; transition: var(--transition); }
.filter-btn:hover { background: var(--gray-200); }
.filter-btn.active { background: var(--gradient-primary); color: var(--white); }

.articles-list { display: flex; flex-direction: column; gap: 30px; }
.article-item { display: grid; grid-template-columns: 280px 1fr; gap: 30px; background: var(--white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); transition: var(--transition); }
.article-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-xl); }
.article-thumb { height: 200px; overflow: hidden; }
.article-thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.article-item:hover .article-thumb img { transform: scale(1.05); }
.article-info { padding: 24px 24px 24px 0; display: flex; flex-direction: column; justify-content: center; }
.article-info .article-category { display: inline-block; width: fit-content; padding: 4px 12px; background: rgba(0, 102, 204, 0.1); color: var(--primary); font-size: 0.8rem; font-weight: 600; border-radius: var(--radius-full); margin-bottom: 12px; }
.article-info h2 { font-size: 1.3rem; font-weight: 600; margin-bottom: 12px; line-height: 1.4; }
.article-info h2 a:hover { color: var(--primary); }
.article-info > p { color: var(--gray-600); font-size: 0.95rem; line-height: 1.7; margin-bottom: 16px; }
.article-info .article-meta { display: flex; gap: 20px; font-size: 0.85rem; color: var(--gray-500); }

.articles-sidebar { position: sticky; top: 90px; }
.sidebar-widget { background: var(--white); padding: 24px; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); margin-bottom: 24px; }
.sidebar-widget h3 { font-size: 1.1rem; font-weight: 600; color: var(--dark); margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--gray-100); }
.popular-posts { display: flex; flex-direction: column; gap: 16px; }
.popular-posts li a { display: block; padding: 12px; background: var(--gray-100); border-radius: var(--radius-md); transition: var(--transition); }
.popular-posts li a:hover { background: var(--gray-200); }
.post-title { display: block; font-weight: 500; color: var(--gray-800); margin-bottom: 4px; font-size: 0.95rem; }
.post-views { font-size: 0.8rem; color: var(--gray-500); }
.cta-widget { background: var(--gradient-primary); color: var(--white); text-align: center; }
.cta-widget h3 { color: var(--white); border-bottom-color: rgba(255,255,255,0.2); }
.cta-widget p { color: rgba(255,255,255,0.85); margin-bottom: 20px; }
.cta-widget .btn { background: var(--white); color: var(--primary); }

.article-detail .article-header { background: var(--gradient-hero); color: var(--white); padding: 120px 0 60px; }
.breadcrumb { display: flex; align-items: center; gap: 8px; margin-bottom: 20px; font-size: 0.9rem; }
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb span { color: rgba(255,255,255,0.5); }
.article-detail .article-header .article-category { display: inline-block; padding: 6px 16px; background: rgba(255,255,255,0.15); color: var(--white); font-size: 0.85rem; font-weight: 600; border-radius: var(--radius-full); margin-bottom: 16px; }
.article-detail .article-header h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 700; margin-bottom: 20px; line-height: 1.3; }
.article-detail .article-header .article-meta { display: flex; gap: 24px; color: rgba(255,255,255,0.8); font-size: 0.95rem; }
.article-cover { margin-top: -30px; margin-bottom: 50px; }
.article-cover img { width: 100%; max-width: 900px; margin: 0 auto; display: block; border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); }
.article-layout { display: grid; grid-template-columns: 1fr 300px; gap: 50px; align-items: start; padding-bottom: 80px; }
.article-content { max-width: 700px; }
.article-content .lead { font-size: 1.2rem; color: var(--gray-700); line-height: 1.8; margin-bottom: 40px; padding-bottom: 30px; border-bottom: 1px solid var(--gray-200); }
.article-content h2 { font-size: 1.5rem; font-weight: 600; color: var(--dark); margin: 40px 0 20px; }
.article-content p { font-size: 1.05rem; color: var(--gray-700); line-height: 1.9; margin-bottom: 20px; }
.article-content blockquote { margin: 30px 0; padding: 24px 30px; background: linear-gradient(135deg, rgba(0, 102, 204, 0.05) 0%, rgba(0, 201, 183, 0.05) 100%); border-left: 4px solid var(--primary); border-radius: 0 var(--radius-md) var(--radius-md) 0; font-style: italic; color: var(--gray-700); font-size: 1.1rem; }
.tip-box { margin: 30px 0; padding: 24px; background: linear-gradient(135deg, rgba(0, 201, 183, 0.1) 0%, rgba(0, 102, 204, 0.1) 100%); border-radius: var(--radius-lg); border: 1px solid rgba(0, 201, 183, 0.3); }
.tip-box h4 { font-size: 1rem; font-weight: 600; color: var(--secondary); margin-bottom: 12px; }
.tip-box p { margin: 0; font-size: 0.95rem; }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 50px; padding-top: 30px; border-top: 1px solid var(--gray-200); }
.article-tags .tag { padding: 6px 16px; background: var(--gray-100); color: var(--gray-700); border-radius: var(--radius-full); font-size: 0.85rem; }
.article-sidebar { position: sticky; top: 90px; }
.related-posts { display: flex; flex-direction: column; gap: 12px; }
.related-posts li a { display: block; padding: 12px; background: var(--gray-100); border-radius: var(--radius-md); font-size: 0.9rem; color: var(--gray-700); transition: var(--transition); }
.related-posts li a:hover { background: var(--gray-200); color: var(--primary); }

@media (max-width: 992px) { .articles-layout, .article-layout { grid-template-columns: 1fr; } .articles-sidebar, .article-sidebar { position: static; } .article-item { grid-template-columns: 1fr; } .article-thumb { height: 200px; } .article-info { padding: 24px; } }
@media (max-width: 768px) { .page-hero { padding: 120px 0 60px; } .articles-section { padding: 50px 0; } .article-detail .article-header { padding: 100px 0 40px; } .article-cover { margin-top: -20px; padding: 0 16px; } }