.navbar{background:var(--bg-primary);border-bottom:1px solid var(--border-light);position:fixed;width:100%;left:0;top:0;z-index:1000;backdrop-filter:blur(8px);transition:transform .3s ease-out,box-shadow .3s ease,opacity .3s ease;will-change:transform,opacity}.navbar.scrolled{box-shadow:var(--shadow-md)}.navbar.navbar-hidden{transform:translateY(-100%);box-shadow:none;opacity:0;pointer-events:none}.nav-content{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4) 0;position:relative}.brand{font-size:var(--text-xl);font-weight:700;color:var(--primary-brand);text-decoration:none;letter-spacing:-.025em}.nav-menu{display:flex;align-items:center;gap:var(--space-4);list-style:none;margin:0;padding:0}.nav-item{position:relative}.nav-link{color:var(--text-secondary);text-decoration:none;font-weight:500;font-size:var(--text-base);transition:color var(--transition-fast);position:relative;display:flex;align-items:center;gap:var(--space-2);padding:var(--space-3) 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var(--transition-normal);z-index:1001;margin-top:var(--space-2)}.mega-menu-container{padding:var(--space-8)}.mega-menu-content{display:grid;grid-template-columns:repeat(3,1fr) 300px;gap:var(--space-8)}.mega-menu-column{min-width:0}.mega-menu-title{font-size:var(--text-base);font-weight:600;color:var(--primary-brand);margin-bottom:var(--space-4);display:flex;align-items:center;gap:var(--space-2);padding-bottom:var(--space-2);border-bottom:1px solid var(--border-light)}.title-icon{font-size:var(--text-lg)}.mega-menu-list{list-style:none;margin:0;padding:0}.mega-menu-list li{margin-bottom:var(--space-1)}.mega-menu-link{display:block;color:var(--text-secondary);text-decoration:none;padding:var(--space-2) var(--space-3);border-radius:6px;font-size:var(--text-sm);transition:all var(--transition-fast);position:relative}.mega-menu-link:hover{background:rgba(10,36,99,.08);color:var(--primary-brand);transform:translateX(4px)}.mega-menu-link:before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:0;height:2px;background:var(--primary-brand);transition:width var(--transition-fast)}.mega-menu-link:hover:before{width:3px}.mega-menu-featured{background:linear-gradient(135deg,rgba(10,36,99,.05),rgba(10,36,99,.02));border:1px solid rgba(10,36,99,.1);border-radius:12px;padding:var(--space-6)}.featured-title{font-size:var(--text-base);font-weight:600;color:var(--primary-brand);margin-bottom:var(--space-4);display:flex;align-items:center;gap:var(--space-2)}.featured-articles{margin-bottom:var(--space-6)}.featured-article{display:flex;gap:var(--space-3);padding:var(--space-3);border-radius:8px;transition:background var(--transition-fast);margin-bottom:var(--space-3)}.featured-article:hover{background:rgba(255,255,255,.5)}.article-thumb{width:40px;height:40px;background:var(--primary-brand);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.thumb-icon{font-size:var(--text-lg);filter:grayscale(1) brightness(2)}.article-info{flex:1;min-width:0}.article-title{font-size:var(--text-sm);font-weight:600;color:var(--text-primary);margin:0 0 var(--space-1) 0;line-height:1.4}.article-title a{color:var(--text-primary);text-decoration:none;transition:color var(--transition-fast);position:relative}.article-title a:hover{color:var(--primary-brand)}.article-title a:after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:1px;background:var(--primary-brand);transition:width var(--transition-fast)}.article-title a:hover:after{width:100%}.article-meta{font-size:var(--text-xs);color:var(--text-tertiary);margin:0}.mega-menu-cta{text-align:center}.mega-menu-cta 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var(--transition-fast);margin-bottom:var(--space-1)}.dropdown-link:hover{background:rgba(10,36,99,.08);color:var(--primary-brand)}.link-icon{font-size:var(--text-base);opacity:.8}.nav-item:hover .mega-menu,.nav-item:hover .dropdown-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}.nav-item:hover .dropdown-menu{transform:translateY(0)}.mega-menu-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.1);opacity:0;visibility:hidden;transition:all var(--transition-normal);z-index:999;backdrop-filter:blur(2px)}.nav-item:hover~.mega-menu-overlay{opacity:1;visibility:visible}.mobile-menu-btn{display:none;background-color:rgba(240,240,240,.5);border:1px solid var(--border-medium);color:var(--text-primary);width:40px;height:40px;border-radius:6px;cursor:pointer;font-size:var(--text-lg);transition:all .3s ease;align-items:center;justify-content:center;z-index:1001}body.menu-open{overflow:hidden;position:fixed;width:100%;height:100%}body.mobile-menu-open .mobile-menu-btn{background-color:var(--primary-brand,#0a2463);color:#fff;border-color:var(--primary-brand,#0a2463);box-shadow:0 0 0 3px rgba(10,36,99,.3)}@media (min-width:1600px){.mega-menu{width:1100px}.mega-menu-content{grid-template-columns:repeat(3,1fr) 350px;gap:var(--space-12)}.nav-link{font-size:var(--text-lg);padding:var(--space-4) var(--space-6)}}@media (min-width:1920px){.brand{font-size:var(--text-2xl)}.nav-link{font-size:var(--text-lg)}.nav-content{padding:var(--space-6) 0}}@media (max-width:1024px){.mega-menu{width:95vw}.mega-menu-content{grid-template-columns:1fr;gap:var(--space-6)}.mega-menu-featured{order:-1}.search-input{width:150px}.search-input:focus{width:200px}}@media (max-width:768px){.mobile-menu-btn{display:flex}.nav-link.active:after{display:none}.mega-menu-featured{display:none}.nav-menu{display:none;position:absolute;top:100%;left:0;width:100%;background-color:#fff;backdrop-filter:blur(5px);box-shadow:0 4px 12px rgba(0,0,0,.2);border:1px solid var(--border-medium);z-index:100;padding:var(--space-4) 0;max-width:100%;margin:0}.nav-menu.active{display:block}.nav-menu .menu-item{display:block;margin:0;padding:var(--space-3) var(--space-6);border-bottom:1px solid var(--border-light);background-color:var(--surface-primary)}.nav-menu .menu-item:hover{background-color:var(--surface-secondary)}.nav-menu .menu-item:last-child{border-bottom:none}.nav-menu .menu-item>a{display:block;font-weight:500;color:var(--text-primary);padding:var(--space-2) 0}.nav-menu .dropdown-menu{position:static;box-shadow:none;display:none;padding-left:var(--space-6);background-color:var(--surface-secondary);border-top:1px solid var(--border-light);border-bottom:1px solid var(--border-light);backdrop-filter:blur(5px);padding:var(--space-2) var(--space-6);margin:var(--space-2) 0}.nav-menu .dropdown-menu.active{display:block}.nav-menu .mega-menu{position:relative;width:100%;box-shadow:var(--shadow-md);padding:0;background-color:var(--surface-secondary);border-top:1px solid var(--border-light);border-bottom:1px solid var(--border-light);backdrop-filter:blur(5px);display:none;margin:0;left:0;transform:none;max-width:100%;z-index:100;-webkit-overflow-scrolling:touch;overflow-y:auto;max-height:80vh}.nav-menu .mega-menu.active{display:block}.nav-menu .mega-menu .mega-menu-content{display:block;padding:0;width:100%;max-width:100%;overflow-x:hidden}.nav-menu .mega-menu .mega-menu-column{margin-bottom:0;padding:0;background-color:var(--surface-secondary);border-radius:0;border-bottom:1px solid var(--border-light);width:100%}.nav-menu .mega-menu .mega-menu-column:last-child{border-bottom:none}.nav-menu .mega-menu .mega-menu-column h4{font-size:var(--text-md);margin:0;padding:var(--space-3) var(--space-6);border-bottom:none;background-color:var(--surface-secondary);display:flex;align-items:center;justify-content:space-between;cursor:pointer;position:relative}.nav-menu .mega-menu .mega-menu-column h4:after{content:'+';font-size:var(--text-lg);font-weight:300;color:var(--text-secondary);transition:transform .3s ease}.nav-menu .mega-menu .mega-menu-column h4.active{background-color:var(--surface-secondary)}.nav-menu .mega-menu .mega-menu-column h4.active:after{content:'-'}.nav-menu .mega-menu .mega-menu-list{margin:0;padding:0;list-style:none;background-color:var(--surface-secondary);width:100%;max-width:100%;box-sizing:border-box;overflow-x:hidden}.nav-menu .mega-menu .mega-menu-list li{margin:0;border-bottom:1px solid var(--border-light);width:100%;position:relative}.nav-menu .mega-menu .mega-menu-list li:last-child{border-bottom:none}.nav-menu .mega-menu .mega-menu-list li a{display:block;padding:var(--space-3) var(--space-8);color:var(--text-primary);font-size:var(--text-sm);text-decoration:none;transition:all .2s ease;white-space:normal;word-break:break-word;overflow-wrap:break-word}.nav-menu .mega-menu .mega-menu-list li a:hover,.nav-menu .mega-menu .mega-menu-list li a:focus{background-color:var(--surface-secondary);color:var(--text-accent);padding-left:calc(var(--space-8) + 5px)}.nav-menu .mega-menu .mega-menu-featured{padding:0;background-color:var(--surface-secondary);border-top:1px solid var(--border-light)}.nav-menu .mega-menu .featured-articles{padding:var(--space-3) var(--space-6)}.nav-menu .mega-menu .featured-article{padding:var(--space-3) 0;border-bottom:1px solid var(--border-light);display:flex;align-items:center;gap:var(--space-3)}.nav-menu .mega-menu .featured-article:last-child{border-bottom:none}.nav-menu .mega-menu .featured-article img{width:60px;height:60px;object-fit:cover;border-radius:var(--radius-sm)}.nav-menu .mega-menu .featured-article .article-info{flex:1}.nav-menu .mega-menu .featured-article .article-title{font-size:var(--text-sm);font-weight:500;margin:0 0 var(--space-1);line-height:1.3}.nav-menu .mega-menu .featured-article .article-meta{font-size:var(--text-xs);color:var(--text-secondary);display:flex;gap:var(--space-2)}.nav-menu .mega-menu .view-all-link{display:block;text-align:center;padding:var(--space-3) 0;margin-top:var(--space-2);background-color:var(--surface-secondary);color:var(--text-accent);font-weight:500;border-radius:var(--radius-sm);transition:all .2s ease}.nav-menu .mega-menu .view-all-link:hover{background-color:var(--surface-hover)}.nav-menu .mega-menu .mega-menu-cta{padding:var(--space-4) var(--space-6);text-align:center;background-color:var(--surface-secondary);border-top:1px solid var(--border-light)}.nav-menu .mega-menu .mega-menu-cta .btn{display:block;width:100%;padding:var(--space-3) var(--space-4);background-color:var(--color-primary);color:var(--text-on-primary);border-radius:var(--radius-sm);font-weight:500;text-align:center;transition:all .2s ease}.nav-menu .mega-menu .mega-menu-cta .btn:hover{background-color:#0056b3;transform:translateY(-2px)}.nav-actions{gap:var(--space-2)}.search-box{display:none}.nav-content{justify-content:space-between;padding:var(--space-4) var(--space-2)}}