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h5{font-size:16px;margin-bottom:20px}.footer-column ul{list-style:none}.footer-column li{margin-bottom:12px}.footer-column a{font-size:14px;color:var(--text-secondary);transition:var(--transition-smooth)}.footer-column a:hover{color:var(--primary-cyan)}.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:32px;border-top:1px solid rgba(255,255,255,.05);color:var(--text-muted);font-size:13px}.light-theme .footer-bottom{border-top-color:#0f172a14}.product-actions{display:flex;gap:12px;margin-top:auto;padding-top:20px}.product-actions .btn{flex:1;font-size:13px;padding:10px 14px}.back-nav{margin-bottom:24px;text-align:left}.back-link{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--text-secondary);transition:var(--transition-smooth)}.back-link:hover{color:var(--primary-cyan)}.back-link svg{width:16px;height:16px;stroke:currentColor;stroke-width:2.5;fill:none}.detail-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;margin-top:48px;text-align:left}.spec-card{border-radius:12px;padding:32px;height:100%}.spec-card h3{font-size:20px;margin-bottom:20px;color:var(--primary-cyan)}.spec-list{list-style:none}.spec-list li{margin-bottom:12px;color:var(--text-secondary);font-size:15px;padding-left:24px;position:relative}.spec-list li:before{content:"•";color:var(--primary-indigo);font-size:20px;position:absolute;left:0;top:-2px}.diagram-panel{border-radius:12px;padding:32px;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:350px;position:relative;overflow:hidden}.diagram-caption{margin-top:20px;font-size:13px;color:var(--text-muted);text-align:center}@media (max-width: 1200px){.products-grid{grid-template-columns:repeat(2,1fr);gap:24px}}@media (max-width: 1024px){.why-grid{grid-template-columns:repeat(2,1fr)}.trust-inner{gap:24px}}@media (max-width: 968px){.products-grid{grid-template-columns:1fr}.pricing-grid{grid-template-columns:1fr;gap:24px}.calculator-wrap,.features-grid{grid-template-columns:1fr}.footer-top{grid-template-columns:1fr;gap:32px}.hero h1{font-size:40px}.detail-grid{grid-template-columns:1fr;gap:32px}}@media (max-width: 768px){.nav-links{display:none;position:fixed;top:0;left:0;width:100%;height:100vh;background:var(--bg-color);flex-direction:column;align-items:center;justify-content:center;gap:32px;z-index:105}.nav-links.open{display:flex}.nav-links a{font-size:22px}.hamburger{display:flex}.hero h1{font-size:34px}.hero p{font-size:16px}.section-header h2{font-size:30px}.why-grid{grid-template-columns:1fr}.trust-inner{flex-direction:column;gap:16px}.trust-badge{width:100%;justify-content:center}.hero-ctas{flex-direction:column;align-items:center}.footer-bottom{flex-direction:column;gap:8px;text-align:center}}@media (max-width: 480px){.hero{padding-top:120px}.hero h1{font-size:28px}.container{padding-left:16px;padding-right:16px}section{padding:64px 0}.cta-banner{padding:40px 24px}.cta-banner h2{font-size:26px}}