.blog-hero{background:linear-gradient(135deg,#1E3A5F 0%,#2563EB 60%,#0EA5E9 100%);color:white;padding:64px 20px 56px;text-align:center;position:relative;overflow:hidden}.blog-hero::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");pointer-events:none}.blog-hero-inner{max-width:640px;margin:0 auto;position:relative;z-index:1}.blog-hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,0.15);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,0.2);border-radius:100px;padding:6px 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p{font-size:0.9rem;color:var(--text-light);line-height:1.6;flex:1;margin-bottom:16px}.blog-featured-meta{display:flex;align-items:center;gap:12px;font-size:0.78rem;color:var(--text-muted)}.blog-featured-meta span{display:flex;align-items:center;gap:4px}.blog-section-title{font-size:1.1rem;font-weight:700;color:var(--text);margin-bottom:20px;display:flex;align-items:center;gap:8px}.blog-section-title::after{content:'';flex:1;height:1px;background:var(--border)}.articles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}.article-card{background:white;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);text-decoration:none;color:var(--text);border:1px solid var(--border);transition:transform 0.22s cubic-bezier(0.34,1.56,0.64,1),box-shadow 0.22s 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span{font-size:0.72rem;color:var(--text-muted)}.calculator-cta-card{background:linear-gradient(135deg,var(--primary),#0EA5E9);color:white;border-radius:var(--radius);padding:22px;text-align:center}.calculator-cta-card h3{font-size:1rem;font-weight:700;margin-bottom:8px}.calculator-cta-card p{font-size:0.82rem;opacity:0.88;margin-bottom:14px}.calculator-cta-card a{display:inline-block;background:white;color:var(--primary);padding:9px 20px;border-radius:8px;font-size:0.82rem;font-weight:700;text-decoration:none;transition:transform 0.15s ease}.calculator-cta-card a:hover{transform:translateY(-2px)}.article-header{background:linear-gradient(135deg,#1E3A5F 0%,#2563EB 60%,#0EA5E9 100%);color:white;padding:56px 20px 48px;position:relative;overflow:hidden}.article-header::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23ffffff' 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h1{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:800;line-height:1.2;letter-spacing:-0.5px;margin-bottom:16px}.article-header-desc{font-size:1.05rem;opacity:0.88;line-height:1.65;margin-bottom:20px;max-width:680px}.article-meta-bar{display:flex;align-items:center;gap:16px;font-size:0.82rem;opacity:0.85;flex-wrap:wrap}.article-meta-bar span{display:flex;align-items:center;gap:5px}.reviewed-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(16,185,129,0.2);border:1px solid rgba(16,185,129,0.4);border-radius:8px;padding:8px 14px;font-size:0.78rem;margin-top:18px;color:#d1fae5}.reviewed-badge strong{color:white}.article-layout{max-width:1200px;margin:0 auto;padding:32px 20px 60px;display:grid;grid-template-columns:1fr 340px;gap:32px;align-items:start}@media(max-width:1023px){.article-layout{grid-template-columns:1fr;padding:24px 16px 48px;gap:24px}.article-sidebar{order:2}.article-main{order:1}}.article-toc{background:var(--primary-light);border:1px solid 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h3{font-size:0.85rem;font-weight:700;text-transform:uppercase;letter-spacing:0.06em;color:var(--text-muted);margin-bottom:12px}.article-references ol{margin-left:18px;display:flex;flex-direction:column;gap:6px}.article-references li{font-size:0.8rem;color:var(--text-muted);line-height:1.5}.article-references a{color:var(--primary);font-size:0.8rem}.article-author-box{display:flex;gap:16px;background:white;border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin:36px 0;box-shadow:var(--shadow);align-items:flex-start}.author-avatar{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--primary),#0EA5E9);display:flex;align-items:center;justify-content:center;font-size:1.4rem;flex-shrink:0}.author-info h4{font-size:0.9rem;font-weight:700;color:var(--text);margin-bottom:2px}.author-info .author-role{font-size:0.78rem;color:var(--primary);font-weight:600;margin-bottom:6px}.author-info 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p{font-size:0.9rem;color:var(--text-muted);margin-top:4px}.view-all-link{display:inline-flex;align-items:center;gap:5px;color:var(--primary);font-size:0.875rem;font-weight:600;text-decoration:none;white-space:nowrap;transition:gap 0.2s ease}.view-all-link:hover{gap:8px}.homepage-blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}@media(max-width:640px){.article-header{padding:40px 16px 36px}.article-layout{padding:24px 16px 40px;gap:24px}.blog-layout{padding:24px 16px 40px}.article-body h2{font-size:1.25rem;margin-top:32px}.article-stat-grid{grid-template-columns:1fr 1fr}.article-author-box{flex-direction:column}.blog-featured-card{grid-template-columns:1fr}}.article-header{width:100%}.article-header-inner{max-width:860px;margin:0 auto;width:100%}@media(max-width:1023px){.article-sidebar-sticky{display:flex;flex-direction:column;gap:16px}.article-sidebar .article-sidebar-widget:first-child{display:none}.article-toc{display:block}.article-sidebar{display:grid;grid-template-columns:1fr 1fr;gap:16px}.article-sidebar>.article-sidebar-sticky{grid-column:1 / -1;display:grid;grid-template-columns:1fr 1fr;gap:16px}}@media(max-width:640px){.article-sidebar{grid-template-columns:1fr}.article-sidebar>.article-sidebar-sticky{grid-template-columns:1fr}.article-sidebar .article-sidebar-widget:first-child{display:none}.article-header{padding:36px 16px 32px}.article-header h1{font-size:1.5rem;line-height:1.25}.article-header-desc{font-size:0.95rem}.article-meta-bar{font-size:0.75rem;gap:10px}.article-toc{padding:16px 18px;margin-bottom:24px}.article-toc li{font-size:0.82rem}.article-body{font-size:0.975rem}.article-body h2{font-size:1.2rem;margin-top:32px;padding-bottom:8px}.article-body h3{font-size:1.05rem}.article-stat-grid{grid-template-columns:1fr 1fr;gap:12px}.article-stat-box .stat-val{font-size:1.5rem}.article-formula{font-size:0.8rem;padding:16px;overflow-x:auto;white-space:pre-wrap;word-break:break-word}.article-author-box{flex-direction:column;gap:12px;padding:16px}.article-share{flex-wrap:wrap;gap:8px;padding:14px 16px}.related-articles-grid{grid-template-columns:1fr}.calculator-cta-card{padding:20px 16px !important}}@media(max-width:1023px){.blog-layout{grid-template-columns:1fr;padding:24px 16px 48px;gap:24px}.blog-sidebar{order:2;display:grid;grid-template-columns:1fr 1fr;gap:16px}.blog-main{order:1}}@media(max-width:640px){.blog-filter-inner{padding:0 12px;gap:2px}.blog-filter-btn{padding:12px 12px;font-size:0.8rem}.blog-hero{padding:48px 16px 40px}.blog-hero h1{font-size:1.75rem}.articles-grid{grid-template-columns:1fr}.blog-sidebar{grid-template-columns:1fr}.blog-featured-card{grid-template-columns:1fr !important}.blog-featured-img{min-height:160px}.homepage-blog-grid{grid-template-columns:1fr}}@media(hover:none){.article-card:hover{transform:none;box-shadow:var(--shadow)}.article-card:active{transform:scale(0.98);background:var(--primary-light)}}.reading-progress{position:fixed;top:0;left:0;height:3px;width:0%;background:linear-gradient(90deg,var(--primary),#10B981,#0EA5E9);z-index:99999;transition:width 0.15s linear;box-shadow:0 0 6px rgba(37,99,235,0.5)}@media(max-width:640px){.blog-filter{top:56px}}@media(max-width:480px){.article-highlight,.article-warning{padding:14px 16px;font-size:0.88rem}.article-pullquote{padding-left:16px;margin:24px 0}.article-pullquote p{font-size:1.05rem}.reviewed-badge{font-size:0.75rem;padding:7px 12px;flex-wrap:wrap}.article-breadcrumb{font-size:0.72rem}}