header{background-color:#0f172a;color:#ffffff;position:sticky;top:0;z-index:1000;box-shadow:0 4px 6px -1px rgba(0,0,0,0.1)}.nav-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:15px 20px}.brand-logo{font-size:1.4rem;font-weight:800;letter-spacing:-0.5px;color:#ffffff;text-decoration:none;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}.brand-logo span{color:#0891b2}nav ul{display:flex;list-style:none;gap:8px;align-items:center;margin:0;padding:0}nav>ul>li>a{color:#cbd5e1;text-decoration:none;font-weight:500;font-size:0.95rem;padding:8px 12px;border-radius:6px;transition:background-color 0.15s ease,color 0.15s ease;display:block;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}nav>ul>li>a:hover{color:#ffffff;background-color:#1e293b}nav>ul>li>a.nav-active{color:#ffffff;background-color:#1e293b;font-weight:600}.hamburger-btn{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;background:none;border:none;cursor:pointer;padding:8px;border-radius:6px}.hamburger-btn span{display:block;width:24px;height:2px;background-color:#ffffff;border-radius:2px;transition:all 0.3s ease}.hamburger-btn.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}.hamburger-btn.open span:nth-child(2){opacity:0}.hamburger-btn.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.nav-dropdown-wrapper{position:relative;display:flex;align-items:center}.nav-dropdown-btn{background:none;border:none;color:#cbd5e1;font-weight:500;font-size:0.95rem;cursor:pointer;padding:8px 12px;border-radius:6px;display:flex;align-items:center;gap:5px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;transition:background-color 0.15s ease,color 0.15s ease;line-height:1}.nav-dropdown-btn:hover{color:#ffffff;background-color:#1e293b}.nav-dropdown-btn.active{color:#ffffff;background-color:#1e293b}.nav-dropdown-btn .arrow{font-size:0.65rem;transition:transform 0.2s ease;display:inline-block;opacity:0.7}.nav-dropdown-btn.open .arrow{transform:rotate(180deg)}.nav-dropdown-link{color:#cbd5e1;font-weight:500;font-size:0.95rem;text-decoration:none;padding:8px 4px 8px 12px;border-radius:6px 0 0 6px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;transition:background-color 0.15s ease,color 0.15s ease;line-height:1;display:flex;align-items:center}.nav-dropdown-link:hover{color:#ffffff;background-color:#1e293b;text-decoration:none}.nav-dropdown-arrow{background:none;border:none;color:#cbd5e1;cursor:pointer;padding:8px 10px 8px 4px;border-radius:0 6px 6px 0;display:flex;align-items:center;transition:background-color 0.15s ease,color 0.15s ease}.nav-dropdown-arrow:hover{color:#ffffff;background-color:#1e293b}.nav-dropdown-arrow.open{color:#ffffff;background-color:#1e293b}.nav-dropdown-arrow .arrow{font-size:0.65rem;transition:transform 0.2s ease;display:inline-block;opacity:0.7}.nav-dropdown-arrow.open .arrow{transform:rotate(180deg)}.nav-dropdown-panel{display:none;position:absolute;top:calc(100% + 10px);right:0;left:auto;transform:none;background-color:#1e293b;border:1px solid #334155;border-radius:12px;padding:8px 0;min-width:220px;box-shadow:0 10px 30px rgba(0,0,0,0.25);z-index:9999}.nav-dropdown-panel.open{display:block}.nav-dropdown-panel a{display:block;padding:10px 16px;color:#cbd5e1;text-decoration:none;font-size:0.9rem;font-weight:500;white-space:nowrap;transition:background-color 0.15s ease,color 0.15s ease;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;border-radius:6px;margin:2px 6px}.nav-dropdown-panel a:hover{background-color:#334155;color:#ffffff}.nav-dropdown-panel a.nav-active-blue{color:#60a5fa;background-color:#1e3a5f}.dropdown-section-label{display:block;padding:8px 16px 4px;font-size:0.7rem;font-weight:800;text-transform:uppercase;letter-spacing:1px;color:#64748b;cursor:default;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}.dropdown-divider{border:none;border-top:1px solid #334155;margin:6px 0}@media (max-width:768px){.hamburger-btn{display:flex}nav ul{display:none;flex-direction:column;position:fixed;top:57px;left:0;right:0;width:100%;background-color:#1e293b;padding:12px 16px 20px;gap:0;z-index:9999;border-top:1px solid #334155;box-shadow:0 8px 16px rgba(0,0,0,0.3);align-items:flex-start;max-height:calc(100vh - 57px);overflow-y:auto}nav ul.mobile-open{display:flex}nav ul>li{width:100%;display:block}nav>ul>li>a{display:block;padding:13px 4px;font-size:1rem;border-bottom:1px solid #334155;color:#cbd5e1;border-radius:0;background:none}nav>ul>li>a:hover{background:none;color:#ffffff}.nav-dropdown-wrapper{width:100%;display:block}.nav-dropdown-btn{display:block;width:100%;padding:13px 4px;font-size:1rem;border-bottom:1px solid #334155;color:#cbd5e1;text-align:left;border-radius:0;background:none}.nav-dropdown-wrapper{flex-wrap:wrap}.nav-dropdown-link{flex:1;padding:13px 4px;font-size:1rem;border-bottom:1px solid #334155;color:#cbd5e1;border-radius:0}.nav-dropdown-arrow{padding:13px 10px;border-bottom:1px solid #334155;border-radius:0}.nav-dropdown-panel{position:static;transform:none;background-color:#0f172a;border:none;border-radius:0;box-shadow:none;padding:4px 0 8px;min-width:unset}.nav-dropdown-panel a{padding:11px 4px 11px 20px;font-size:0.92rem;border-bottom:1px solid #1e293b;color:#94a3b8;white-space:normal;border-radius:0;margin:0}.nav-dropdown-panel a:last-child{border-bottom:none}.dropdown-section-label{padding:10px 4px 4px 16px}}