:root{--hvac-primary:#1e3a5f;--hvac-secondary:#0d2137;--hvac-accent:#f97316;--hvac-accent-hover:#ea580c;--hvac-light:#f8fafc;--hvac-white:#fff;--hvac-text:#1f2937;--hvac-text-light:#6b7280;--hvac-border:rgba(30,58,95,.15);--hvac-shadow:0 4px 24px rgba(0,0,0,.08);--hvac-shadow-lg:0 8px 40px rgba(0,0,0,.12)}.hvac-template{color:var(--hvac-text);font-family:var(--hvac-font-body),"Inter",system-ui,sans-serif;overflow-x:hidden}.hvac-header,.hvac-template{background:var(--hvac-white)}.hvac-header{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--hvac-border);box-shadow:0 2px 8px rgba(0,0,0,.04)}.hvac-header-inner{max-width:1400px;margin:0 auto;padding:1rem 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