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16px);opacity:.85}.container{width:100%;max-width:var(--container-max);margin-left:auto;margin-right:auto;padding-left:1.5rem;padding-right:1.5rem;position:relative;z-index:1}h1,h2,h3,h4,.hero-title,.brand-name{font-family:var(--font-display);letter-spacing:-.02em}.top-banner{background:var(--bg-surface-elevated);border-bottom:1px solid var(--border-subtle);font-size:.82rem;padding:.45rem 1rem;text-align:center;position:relative;z-index:50}.banner-inner{display:flex;align-items:center;justify-content:center;gap:.65rem;flex-wrap:wrap}.banner-text{color:var(--text-muted)}.banner-link{color:var(--accent-cyan);text-decoration:underline;text-underline-offset:3px;font-weight:600;transition:color var(--transition-base)}.banner-link:hover{color:#38bdf8}.top-banner .badge{background:#f59e0b26;color:var(--accent-primary);border:1px solid rgba(245,158,11,.35);padding:2px 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var(--transition-base);text-decoration:none}.pathway-card:hover{border-color:var(--accent-primary);transform:translateY(-3px);box-shadow:var(--shadow-md)}.cheat-toolbar{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}.cheat-fmt-btn{background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);color:var(--text-muted);padding:.25rem .65rem;border-radius:6px;font-size:.75rem;font-family:var(--font-mono);cursor:pointer;transition:all var(--transition-base)}.cheat-fmt-btn:hover,.cheat-fmt-btn.active{background:var(--accent-cyan);border-color:var(--accent-cyan);color:#000;font-weight:700}.standards-audit-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;margin-top:1.25rem}.standard-audit-item{background:#03071266;border:1px solid var(--border-subtle);border-radius:10px;padding:1rem;border-left:3px solid var(--accent-emerald)}@media(max-width:900px){.sim-container,.diagram-grid,.dot-cross-grid,.flywheel-sim-container,.fastener-diag-grid,.laser-diag-grid,.diag-flowchart-card{grid-template-columns:1fr}}@media(min-width:1440px){:root{--container-max: 1380px}}@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:2rem}.quick-answer-card{grid-template-columns:1fr;gap:1.5rem}.matrix-grid{grid-template-columns:1fr}}@media(max-width:768px){.desktop-nav{display:none}.mobile-menu-btn{display:flex}.calc-tabs{grid-template-columns:1fr 1fr}.input-grid-2,.footer-grid{grid-template-columns:1fr}}.article-featured-image-container{margin-bottom:2.75rem;border-radius:16px;overflow:hidden;border:1px solid var(--border-subtle);box-shadow:var(--shadow-lg);position:relative;background:var(--bg-surface-elevated)}.article-featured-image{width:100%;height:auto;max-height:520px;object-fit:cover;display:block}.blog-card-thumbnail{display:block;overflow:hidden;border-radius:12px;margin-bottom:1.25rem;aspect-ratio:16 / 9;background:var(--bg-surface-elevated);border:1px solid var(--border-subtle)}.blog-card-img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-smooth);display:block}.blog-card-thumbnail:hover .blog-card-img{transform:scale(1.05)}.article-content{font-size:1.0625rem;line-height:1.85;color:var(--text-secondary)}.article-content h1{font-size:clamp(2rem,3.5vw,2.75rem);font-weight:800;color:var(--text-primary);margin-top:1rem;margin-bottom:1.5rem;line-height:1.25}.article-content h2{font-size:clamp(1.5rem,2.5vw,1.875rem);font-weight:800;color:var(--text-primary);margin-top:3.25rem;margin-bottom:1.25rem;line-height:1.35;position:relative;padding-bottom:.65rem;border-bottom:1px solid var(--border-subtle)}.article-content h3{font-size:clamp(1.2rem,2vw,1.45rem);font-weight:700;color:var(--text-primary);margin-top:2.25rem;margin-bottom:1rem;line-height:1.4}.article-content h4{font-size:1.15rem;font-weight:700;color:var(--accent-cyan);margin-top:1.75rem;margin-bottom:.75rem}.article-content p{margin-bottom:1.5rem}.article-content strong{color:var(--text-primary);font-weight:600}.article-content a{color:var(--accent-cyan);text-decoration:none;border-bottom:1px dashed var(--accent-cyan);transition:color var(--transition-base),border-color var(--transition-base)}.article-content a:hover{color:#38bdf8;border-bottom-style:solid}.article-content ul,.article-content ol{margin:0 0 1.75rem 1.5rem;padding-left:.75rem}.article-content li{margin-bottom:.65rem;line-height:1.75}.article-content hr{border:none;height:1px;background:linear-gradient(90deg,transparent,var(--border-subtle),transparent);margin:3.5rem 0}.article-content blockquote{position:relative;margin:2.25rem 0;padding:1.25rem 1.75rem;background:#f59e0b14;border-left:4px solid var(--accent-primary);border-radius:0 12px 12px 0;font-style:italic;color:var(--text-primary)}.article-content blockquote p:last-child{margin-bottom:0}.article-content figure{margin:2.75rem 0;text-align:center}.article-content figure img{max-width:100%;height:auto;border-radius:14px;border:1px solid var(--border-subtle);box-shadow:var(--shadow-md);display:block;margin:0 auto}.article-content figcaption{margin-top:.85rem;font-size:.88rem;color:var(--text-muted);font-style:italic}.article-content pre{margin:1.75rem 0;padding:1.25rem 1.5rem;border-radius:12px;background:#0a0e1af2;border:1px solid var(--border-subtle);overflow-x:auto;font-family:var(--font-mono);font-size:.92rem;line-height:1.65;color:#38bdf8}.article-content code:not(pre code){font-family:var(--font-mono);font-size:.88em;background:#f59e0b1f;color:#fbbf24;padding:.2em .45em;border-radius:6px;border:1px solid rgba(245,158,11,.25)}.article-table-wrapper{overflow-x:auto;margin:2.25rem 0;border-radius:12px;border:1px solid var(--border-subtle);box-shadow:var(--shadow-sm)}.article-content table{width:100%;border-collapse:collapse;font-size:.95rem;text-align:left}.article-content thead{background:#1a1e30f2}.article-content th{padding:1rem 1.25rem;font-weight:700;color:var(--text-primary);border-bottom:2px solid var(--border-subtle);white-space:nowrap}.article-content td{padding:.95rem 1.25rem;border-bottom:1px solid var(--border-subtle);color:var(--text-secondary);vertical-align:top}.article-content tr:nth-child(2n) td{background:#ffffff04}.article-content tr:hover td{background:#f59e0b0d}.callout-box{margin:2rem 0;padding:1.5rem;border-radius:14px;border:1px solid var(--border-subtle);background:var(--bg-surface-elevated)}.callout-box.info{border-left:4px solid var(--accent-cyan);background:#06b6d40f}.callout-box.tip{border-left:4px solid var(--accent-emerald);background:#10b9810f}.callout-box.warning{border-left:4px solid var(--accent-amber);background:#f59e0b0f}.callout-box h4,.callout-box .callout-title{margin-top:0;margin-bottom:.65rem;display:flex;align-items:center;gap:.5rem;font-size:1.05rem;font-weight:700}.callout-box p:last-child{margin-bottom:0}.article-author-card{display:flex;align-items:center;gap:1.5rem;margin-top:3.5rem;padding:1.75rem;border-radius:14px;background:var(--bg-surface-elevated);border:1px solid var(--border-subtle)}.article-author-avatar{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,var(--accent-primary),var(--accent-cyan));display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:800;color:#fff;flex-shrink:0}