:root{--primary-color: #003399;--secondary-color: #0056b3;--accent-color: #ffa500;--zalo-color: #0068ff;--call-color: #28a745;--text-dark: #333333;--text-light: #666666;--white: #ffffff;--background: #f4f6f9;--border-radius: 12px;--shadow: 0 4px 12px rgba(0, 0, 0, .08);--header-height: 60px;--font-main: "Inter", system-ui, -apple-system, sans-serif}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-main);background-color:var(--background);color:var(--text-dark);line-height:1.6;-webkit-font-smoothing:antialiased;padding-bottom:70px}a{text-decoration:none;color:inherit}ul{list-style:none}img{max-width:100%;display:block}.container{max-width:1200px;margin:0 auto;padding:0 16px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border-radius:var(--border-radius);font-weight:600;cursor:pointer;transition:all .3s ease;border:none;font-size:1rem}.btn-primary{background-color:var(--primary-color);color:var(--white)}.btn-primary:active{transform:scale(.98)}.sticky-footer{position:fixed;bottom:0;left:0;width:100%;height:60px;display:flex;background:var(--white);box-shadow:0 -2px 10px #0000001a;z-index:1000}.sticky-btn{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--white);font-weight:700;font-size:.9rem;border:none;cursor:pointer}.btn-call{background-color:var(--call-color)}.btn-zalo{background-color:var(--zalo-color)}.sticky-btn span{margin-top:4px}.navbar{background:var(--white);height:var(--header-height);position:sticky;top:0;z-index:999;box-shadow:0 2px 8px #0000000d;display:flex;align-items:center;justify-content:space-between;padding:0 16px}.logo{font-size:1.5rem;font-weight:800;color:var(--primary-color)}.nav-links{display:none}.mobile-menu-btn{font-size:1.5rem;color:var(--text-dark);background:none;border:none}@media(min-width:768px){.nav-links{display:flex;gap:24px}.nav-links a{color:var(--text-dark);font-weight:500}.nav-links a:hover,.nav-links a.active{color:var(--primary-color)}.mobile-menu-btn{display:none}body{padding-bottom:0}.sticky-footer{display:none}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .5s ease-out forwards}@keyframes pulse-custom{0%{box-shadow:0 0 #003399b3;transform:scale(1)}70%{box-shadow:0 0 0 10px #0390;transform:scale(1.05)}to{box-shadow:0 0 #0390;transform:scale(1)}}.floating-btn-anim{animation:pulse-custom 2s infinite}.news-card{transition:transform .3s ease}.news-card:hover{transform:translateY(-5px)}.news-card .card-thumb img{transition:transform .5s ease}.news-card:hover .card-thumb img{transform:scale(1.1)}.hover-preview{opacity:0;transition:opacity .3s ease}.news-card:hover .hover-preview{opacity:1}