@media (max-width:576px){.container{padding:0 10px}.header-main{flex-direction:column;text-align:center}.site-branding{margin-bottom:15px}.logo{font-size:20px}.header-contact{flex-direction:column}.header-contact span{margin:5px 0}.site-main{padding:20px 0}.footer-widgets{grid-template-columns:1fr;gap:20px}.footer-bottom{text-align:center}.footer-bottom p{margin-bottom:10px}}@media (min-width:576px){.container{max-width:540px}}@media (min-width:768px){.container{max-width:720px}.header-main{flex-direction:row;justify-content:space-between}.site-branding{margin-bottom:0}.footer-widgets{grid-template-columns:repeat(2,1fr)}}@media (min-width:992px){.container{max-width:960px}.footer-widgets{grid-template-columns:repeat(3,1fr)}}@media (min-width:1200px){.container{max-width:1200px}}@media (max-width:768px){.menu-toggle{display:flex}.primary-menu-container{display:none;position:absolute;top:100%;left:0;right:0;background-color:#fff;box-shadow:0 2px 10px rgba(0,0,0,.1);z-index:1000;padding:1px;NEN MENU CHA}.primary-menu-container.toggled{display:block}.menu{flex-direction:column}.menu li{margin:0;width:100%}.menu-toggle-text{xoa chu nay la an display:none}.menu a{padding:12px 0;border-bottom:1px solid #f0f0f0}.menu .sub-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;margin-left:15px;display:none}.menu li.menu-item-has-children>a:after{content:"▼";margin-left:5px;font-size:10px}.menu li.menu-item-has-children.active>.sub-menu{display:block}}@media (min-width:769px){.menu-toggle{display:none}.primary-menu-container{display:block !important}}@media (max-width:768px){input[type=text],input[type=email],input[type=tel],textarea,select{width:100%}.search-form{flex-direction:column}.search-form input{margin-right:0;margin-bottom:10px}}img{max-width:100%;height:auto}.video-container{position:relative;padding-bottom:56.25%;height:0;overflow:hidden}.video-container iframe,.video-container object,.video-container embed{position:absolute;top:0;left:0;width:100%;height:100%}.hidden-mobile{display:none}.visible-mobile{display:block}@media (min-width:769px){.hidden-mobile{display:block}.visible-mobile{display:none}}@media (max-width:768px){h1{font-size:28px}h2{font-size:24px}h3{font-size:20px}p,li{font-size:16px}}.table-responsive{overflow-x:auto;width:100%}.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:15px}@media (max-width:576px){.gallery{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}}.popup-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,.8);z-index:9999;display:flex;justify-content:center;align-items:center;padding:20px}.popup-content{background:#fff;padding:30px;border-radius:10px;max-width:500px;width:100%;position:relative;box-shadow:0 10px 30px rgba(0,0,0,.3);animation:popupFadeIn .5s ease}@keyframes popupFadeIn{from{opacity:0;transform:translateY(-50px) scale(.9)}to{opacity:1;transform:translateY(0) scale(1)}}.popup-close{position:absolute;top:15px;right:15px;background:0 0;border:none;font-size:24px;cursor:pointer;color:#666;padding:0;width:30px;height:30px;display:flex;align-items:center;justify-content:center}.popup-close:hover{color:#000}.popup-header{text-align:center;margin-bottom:25px}.popup-header h3{color:#06c;margin-bottom:10px;font-size:24px}.popup-header p{color:#666;margin:0}.popup-form .form-group{margin-bottom:20px}.popup-form label{display:block;margin-bottom:8px;font-weight:500;color:#333}.popup-form input,.popup-form textarea{width:100%;padding:12px;border:2px solid #e0e0e0;border-radius:6px;font-size:16px;transition:border-color .3s ease}.popup-form input:focus,.popup-form textarea:focus{outline:none;border-color:#06c}.popup-form button{width:100%;padding:15px;background-color:#06c;color:#fff;border:none;border-radius:6px;font-size:16px;font-weight:600;cursor:pointer;transition:background-color .3s ease}.popup-form button:hover{background-color:#049}.popup-message{padding:15px;border-radius:6px;margin-top:20px;text-align:center}.popup-message.success{background-color:#d4edda;color:#155724;border:1px solid #c3e6cb}.popup-message.error{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb}@media (max-width:576px){.popup-content{padding:20px;margin:10px}.popup-header h3{font-size:20px}.popup-form input,.popup-form textarea{padding:10px;font-size:14px}}.back-to-top{position:fixed;bottom:30px;right:30px;width:50px;height:50px;background-color:#06c;color:#fff;border:none;border-radius:50%;cursor:pointer;opacity:0;visibility:hidden;transition:all .3s ease;z-index:999;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 15px rgba(0,102,204,.3)}.back-to-top:hover{background-color:#049;transform:translateY(-3px);box-shadow:0 6px 20px rgba(0,102,204,.4)}.back-to-top:active{transform:translateY(0)}.back-to-top.show{opacity:1;visibility:visible}.back-to-top svg{transition:transform .3s ease}.back-to-top:hover svg{transform:translateY(-2px)}@media (max-width:768px){.back-to-top{bottom:20px;right:20px;width:45px;height:45px}}@media (max-width:576px){.back-to-top{bottom:15px;right:15px;width:40px;height:40px}.back-to-top svg{width:18px;height:18px}}