:root{--hdr-blue:#0033bb;--hdr-dark:#0f172a;--hdr-text:#222222;--hdr-border:#e2e8f0;--hdr-radius:2px;--hdr-bg:#ffffff}.site-header{width:100%;background-color:var(--hdr-bg);border-bottom:1px solid var(--hdr-border);box-shadow:0 1px 3px rgb(0 0 0 / .02);position:sticky;top:0;z-index:9999}.header-inner{max-width:1150px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:8px 20px}.site-logo a{display:flex;align-items:center;text-decoration:none}.site-logo img{width:37px;height:37px;object-fit:contain;transition:transform 0.2s ease}.site-logo a:hover img{transform:scale(1.05)}.main-navigation{display:flex;align-items:center;gap:12px}.main-navigation a{text-decoration:none;display:flex;flex-direction:column;align-items:center;padding:6px 14px;border-radius:var(--hdr-radius);transition:all 0.2s ease;border:1px solid #fff0}.main-navigation a:hover{background:#f8fbff;border-color:#e0eaff}.menu-label{font-size:16px;font-weight:800;color:var(--hdr-blue);line-height:1;margin:0}.menu-text{font-size:10px;font-weight:700;color:var(--hdr-muted);text-transform:uppercase;letter-spacing:.5px;margin-top:4px}.header-submit-box{margin-left:10px;padding-left:15px;border-left:1px solid var(--hdr-border);display:flex;align-items:center}.header-submit-box .aiot-open-popup{background:var(--hdr-blue)!important;color:#fff!important;font-size:12px!important;font-weight:800;padding:12px 12px!important;border-radius:var(--hdr-radius)!important;height:auto!important;line-height:1!important;border:none!important}@media (max-width:768px){.header-inner{flex-direction:row;padding:10px 15px}.main-navigation{gap:5px}.main-navigation a{padding:4px 8px}.menu-label{font-size:14px}.menu-text{font-size:9px}.header-submit-box{padding-left:8px;margin-left:5px}.header-submit-box .aiot-open-popup{padding:6px 10px!important;font-size:11px!important}}