.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;font-weight:600;border-radius:var(--radius-md);transition:all .2s ease;font-size:var(--font-size-base);cursor:pointer;border:1px solid transparent}.btn-primary{background-color:var(--primary-color);color:var(--text-light)}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--secondary-color);color:var(--text-light)}.btn-secondary:hover{background-color:var(--secondary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-outline{background-color:transparent;border-color:var(--primary-color);color:var(--primary-color)}.btn-outline:hover{background-color:#0056b30d}.btn-accent{background-color:var(--accent-color);color:var(--text-primary)}.btn-accent:hover{filter:brightness(.95)}.header{background-color:var(--bg-white);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:1000;padding:var(--spacing-sm) 0}.header-container{display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center;gap:var(--spacing-sm);font-weight:700;font-size:1.5rem;color:var(--primary-color)}.logo-icon{font-size:1.8rem}.desktop-nav{display:none;align-items:center;gap:var(--spacing-lg)}.nav-link{font-weight:500;color:var(--text-primary);transition:color .2s;display:flex;align-items:center;gap:4px}.nav-link:hover{color:var(--primary-color)}.nav-item-dropdown{position:relative;padding:10px 0}.dropdown-trigger{cursor:pointer}.dropdown-menu{position:absolute;top:100%;left:0;background-color:var(--bg-white);box-shadow:var(--shadow-md);border-radius:var(--radius-md);min-width:200px;padding:var(--spacing-sm) 0;display:flex;flex-direction:column;animation:fadeIn .2s ease-out}.dropdown-item{padding:var(--spacing-sm) var(--spacing-md);color:var(--text-primary);transition:background-color .2s}.dropdown-item:hover{background-color:var(--bg-body);color:var(--primary-color)}.header-actions{display:flex;align-items:center;gap:var(--spacing-md)}.hotline-link{display:none;align-items:center;gap:var(--spacing-xs);font-weight:600;color:var(--secondary-color)}.mobile-menu-btn{display:block}.header-cta{display:none}.mobile-nav{background-color:var(--bg-white);border-top:1px solid var(--border-color);padding:var(--spacing-md);position:absolute;top:100%;left:0;right:0;box-shadow:var(--shadow-md);animation:slideDown .3s ease-out}.mobile-nav-link{display:block;padding:var(--spacing-sm) 0;font-weight:600;border-bottom:1px solid var(--border-color)}.mobile-nav-group{padding:var(--spacing-sm) 0;border-bottom:1px solid var(--border-color)}.mobile-group-title{display:block;font-weight:600;margin-bottom:var(--spacing-xs);color:var(--text-secondary)}.mobile-sub-link{display:block;padding:var(--spacing-xs) 0 var(--spacing-xs) var(--spacing-md);color:var(--text-primary)}@keyframes fadeIn{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@media(min-width:900px){.desktop-nav{display:flex}.mobile-menu-btn{display:none}.header-cta{display:inline-flex}.hotline-link{display:flex}}.footer{background-color:#1a1a1a;color:#e0e0e0;padding-top:var(--spacing-xl);margin-top:auto}.footer-container{display:grid;grid-template-columns:1fr;gap:var(--spacing-lg);padding-bottom:var(--spacing-xl)}@media(min-width:768px){.footer-container{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.footer-container{grid-template-columns:2fr 1fr 1fr 1.5fr}}.footer-col{display:flex;flex-direction:column;gap:var(--spacing-md)}.footer-logo{font-size:1.5rem;font-weight:700;color:var(--text-light);display:flex;align-items:center;gap:var(--spacing-xs)}.footer-desc{font-size:.9rem;color:#ccc;line-height:1.5}.social-links{display:flex;gap:var(--spacing-md);margin-top:var(--spacing-sm)}.social-link{color:var(--text-light);transition:color .2s}.social-link:hover{color:var(--primary-color)}.footer-title{color:var(--text-light);font-size:1.1rem;margin-bottom:var(--spacing-sm);position:relative;display:inline-block}.footer-title:after{content:"";position:absolute;left:0;bottom:-4px;width:40px;height:2px;background-color:var(--primary-color)}.footer-list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.footer-list a{color:#ccc;font-size:.95rem;transition:all .2s}.footer-list a:hover{color:var(--primary-color);padding-left:4px}.contact-item{display:flex;align-items:flex-start;gap:var(--spacing-sm);color:#ccc;font-size:.95rem}.contact-icon{color:var(--primary-color);margin-top:2px;flex-shrink:0}.footer-bottom{background-color:#111;padding:var(--spacing-md) 0;text-align:center;color:#888;font-size:.875rem}.floating-contact{position:fixed;bottom:20px;right:20px;z-index:1000;display:flex;flex-direction:column-reverse;gap:15px}.contact-btn{display:flex;align-items:center;width:50px;height:50px;border-radius:50%;color:#fff;text-decoration:none;justify-content:center;position:relative;box-shadow:0 4px 12px #0003;transition:all .3s ease}.contact-btn:hover{width:auto;padding-left:20px;border-radius:25px;flex-direction:row-reverse}.contact-btn .btn-label{max-width:0;overflow:hidden;white-space:nowrap;opacity:0;margin-right:0;font-weight:500;transition:all .3s ease}.contact-btn:hover .btn-label{max-width:200px;margin-right:10px;opacity:1}.phone-btn{background-color:#dc3545}.phone-animation{display:flex;align-items:center;justify-content:center;animation:bounce 2s infinite}.zalo-btn{background-color:#0068ff;font-family:Arial,sans-serif}.zalo-btn .btn-icon{font-size:24px;font-weight:900;font-style:italic}.messenger-btn{background:linear-gradient(45deg,#0b8bf2,#a033ff)}@keyframes bounce{0%,20%,50%,80%,to{transform:translateY(0)}40%{transform:translateY(-5px)}60%{transform:translateY(-3px)}}@media(max-width:768px){.floating-contact{bottom:10px;right:10px}.contact-btn{width:45px;height:45px}}.modal-overlay{position:fixed;inset:0;background-color:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:2000;animation:fadeIn .3s ease-out;padding:1rem}.modal-content{background:linear-gradient(135deg,#fff,#f8f9fa);padding:2.5rem;border-radius:20px;width:100%;max-width:520px;position:relative;box-shadow:0 20px 60px #0000004d;animation:slideUp .4s cubic-bezier(.34,1.56,.64,1);max-height:90vh;overflow-y:auto}.modal-close-btn{position:absolute;top:1.25rem;right:1.25rem;background:#0000000d;border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);transition:all .3s;z-index:10}.modal-close-btn:hover{background:#d32f2f1a;color:#d32f2f;transform:rotate(90deg)}.modal-header{text-align:center;margin-bottom:2rem}.modal-icon{width:70px;height:70px;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem;color:#fff;box-shadow:0 8px 24px #007bff4d;animation:scaleIn .5s cubic-bezier(.34,1.56,.64,1)}.modal-header h2{color:var(--primary-color);margin-bottom:.75rem;font-size:1.75rem;font-weight:700}.modal-subtitle{color:var(--text-secondary);font-size:.95rem;margin-bottom:.5rem}.modal-subtitle strong{color:var(--primary-color);font-weight:600}.modal-description{color:var(--text-secondary);font-size:.9rem;margin-top:.5rem}.modal-form{display:flex;flex-direction:column;gap:1.25rem}.form-group{position:relative}.form-group label{display:flex;align-items:center;gap:.5rem;font-weight:600;color:var(--text-primary);margin-bottom:.5rem;font-size:.95rem}.form-group label svg{color:var(--primary-color)}.required{color:#d32f2f;font-weight:700}.form-group input,.form-group select,.form-group textarea{width:100%;padding:.875rem 1rem;border:2px solid #e0e0e0;border-radius:12px;font-size:1rem;transition:all .3s;background:#fff}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 4px #007bff1a;transform:translateY(-2px)}.form-group textarea{resize:vertical;min-height:80px;font-family:inherit}.modal-actions{margin-top:.5rem}.modal-submit-btn{width:100%;padding:1rem;font-size:1.05rem;font-weight:600;border-radius:12px;transition:all .3s}.modal-submit-btn:hover{transform:translateY(-2px);box-shadow:0 8px 24px #007bff4d}.modal-note{text-align:center;font-size:.85rem;color:var(--text-secondary);margin-top:1rem;display:flex;align-items:center;justify-content:center;gap:.5rem}.modal-note:before{content:"🔒"}.modal-success{text-align:center;padding:2rem 1rem;animation:fadeIn .5s ease-out}.success-icon{width:100px;height:100px;background:linear-gradient(135deg,#4caf50,#66bb6a);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem;color:#fff;animation:successPop .6s cubic-bezier(.34,1.56,.64,1);box-shadow:0 8px 24px #4caf504d}.modal-success h2{color:#4caf50;margin-bottom:1rem;font-size:1.75rem;font-weight:700}.modal-success p{color:var(--text-secondary);font-size:1.05rem;line-height:1.6;margin-bottom:.5rem}.success-subtext{font-size:.9rem!important;color:var(--text-tertiary)!important}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(40px) scale(.95);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}@keyframes scaleIn{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}@keyframes successPop{0%{transform:scale(0);opacity:0}50%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}@media(max-width:640px){.modal-content{padding:2rem 1.5rem;border-radius:16px}.modal-header h2{font-size:1.5rem}.modal-icon{width:60px;height:60px}.modal-icon svg{width:28px;height:28px}.success-icon{width:80px;height:80px}.success-icon svg{width:48px;height:48px}}.hero-section{background:linear-gradient(135deg,#f0f7ff,#fff);padding:var(--spacing-xl) 0;position:relative;overflow:hidden}.hero-container{display:grid;grid-template-columns:1fr;gap:var(--spacing-xl);align-items:center}@media(min-width:900px){.hero-container{grid-template-columns:1.2fr .8fr}}.hero-content{z-index:10}.hero-title{font-size:2rem;font-weight:800;line-height:1.2;margin-bottom:var(--spacing-md);color:var(--text-primary)}@media(min-width:768px){.hero-title{font-size:3rem}}.highlight-text{color:var(--primary-color);position:relative;display:inline-block}.highlight-text:after{content:"";position:absolute;bottom:0;left:0;width:100%;height:8px;background-color:#0056b31a;z-index:-1;border-radius:4px}.hero-subtitle{font-size:1.1rem;color:var(--text-secondary);margin-bottom:var(--spacing-lg);max-width:600px}.hero-features{display:flex;flex-direction:column;gap:var(--spacing-sm);margin-bottom:var(--spacing-lg)}.feature-item{display:flex;align-items:center;gap:var(--spacing-sm);font-weight:500;color:var(--text-primary)}.feature-icon{color:var(--secondary-color)}.hero-actions{display:flex;flex-direction:column;gap:var(--spacing-md)}@media(min-width:480px){.hero-actions{flex-direction:row}}.hero-image-wrapper{position:relative;display:flex;justify-content:center;align-items:center}.hero-placeholder-image img{width:100%;max-width:500px;border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);transform:perspective(1000px) rotateY(-5deg);transition:transform .3s ease}.hero-placeholder-image img:hover{transform:perspective(1000px) rotateY(0)}.overview-section{background-color:var(--bg-white)}.section-header{text-align:center;margin-bottom:var(--spacing-xl)}.section-title{font-size:var(--font-size-h2);color:var(--primary-color);margin-bottom:var(--spacing-sm)}.section-subtitle{color:var(--text-secondary);font-size:1.1rem}.accordion-container{max-width:800px;margin:0 auto;border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden}.accordion-item{border-bottom:1px solid var(--border-color);background-color:var(--bg-white)}.accordion-item:last-child{border-bottom:none}.accordion-header{width:100%;display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-md) var(--spacing-lg);background-color:transparent;color:var(--text-primary);font-weight:600;font-size:1.1rem;transition:background-color .2s;text-align:left}.accordion-header:hover{background-color:#f8f9fa;color:var(--primary-color)}.accordion-item.active .accordion-header{background-color:#f0f7ff;color:var(--primary-color);border-bottom:1px solid #e1e4e8}.accordion-content{max-height:0;overflow:hidden;transition:max-height .3s ease-out}.accordion-item.active .accordion-content{max-height:500px}.accordion-body{padding:var(--spacing-md) var(--spacing-lg);color:var(--text-secondary);line-height:1.6}.accordion-body p{margin-bottom:.5rem}.accordion-body p:last-child{margin-bottom:0}.accordion-icon{color:var(--text-secondary);transition:transform .2s}.accordion-item.active .accordion-icon{transform:rotate(180deg);color:var(--primary-color)}.province-map-section{background-color:var(--bg-white)}.provinces-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md);max-width:1000px;margin:0 auto}@media(min-width:768px){.provinces-grid{grid-template-columns:repeat(3,1fr);gap:var(--spacing-lg)}}.province-card{display:flex;flex-direction:column;align-items:center;text-align:center;padding:var(--spacing-lg);background-color:#f8f9fa;border:1px solid var(--border-color);border-radius:var(--radius-md);transition:all .2s}.province-card:hover{background-color:#e3f2fd;transform:translateY(-5px);border-color:var(--primary-color);box-shadow:var(--shadow-md)}.province-icon-wrapper{color:var(--primary-color);margin-bottom:var(--spacing-sm);background-color:#fff;padding:12px;border-radius:50%;box-shadow:var(--shadow-sm)}.province-name{font-size:1.25rem;color:var(--text-primary);margin-bottom:4px}.province-count{font-size:.9rem;color:var(--text-secondary)}.project-card{background-color:var(--bg-white);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);overflow:hidden;transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column}.project-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.card-image-wrapper{position:relative;height:200px;overflow:hidden}.card-image{width:100%;height:100%;object-fit:cover;transition:transform .3s}.project-card:hover .card-image{transform:scale(1.05)}.card-status{position:absolute;top:10px;right:10px;padding:4px 12px;border-radius:var(--radius-full);font-size:.75rem;font-weight:600;text-transform:uppercase}.status-open{background-color:var(--secondary-color);color:#fff}.status-coming_soon{background-color:var(--accent-color);color:var(--text-primary)}.status-sold_out{background-color:var(--text-secondary);color:#fff}.card-content{padding:var(--spacing-md);flex:1;display:flex;flex-direction:column}.card-title{font-size:1.25rem;margin-bottom:var(--spacing-sm);color:var(--text-primary);line-height:1.4}.card-info{display:flex;flex-direction:column;gap:var(--spacing-xs);margin-bottom:var(--spacing-md);flex:1}.info-item{display:flex;align-items:center;gap:var(--spacing-xs);color:var(--text-secondary);font-size:.9rem}.info-icon{color:var(--primary-color);flex-shrink:0}.info-price{color:#d32f2f;font-weight:700;font-size:1rem}.card-actions{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-sm)}.card-btn{padding:.5rem;font-size:.9rem}.featured-projects{background-color:#f8f9fa}.projects-grid{display:grid;grid-template-columns:1fr;gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}@media(min-width:640px){.projects-grid{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.projects-grid{grid-template-columns:repeat(3,1fr)}}@media(min-width:1280px){.projects-grid{grid-template-columns:repeat(4,1fr)}}.section-footer{text-align:center}.process-section{background-color:var(--bg-white)}.process-steps{display:flex;flex-direction:column;gap:var(--spacing-lg);align-items:center;justify-content:space-between}@media(min-width:768px){.process-steps{flex-direction:row;align-items:flex-start}}.process-step{display:flex;flex-direction:column;align-items:center;text-align:center;position:relative;flex:1;padding:0 var(--spacing-sm)}.step-icon-wrapper{width:80px;height:80px;background-color:#f0f7ff;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--primary-color);margin-bottom:var(--spacing-md);position:relative;box-shadow:var(--shadow-sm)}.step-number{position:absolute;top:0;right:0;background-color:var(--secondary-color);color:#fff;width:24px;height:24px;border-radius:50%;font-size:.8rem;font-weight:700;display:flex;align-items:center;justify-content:center}.step-title{font-size:1.1rem;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.step-desc{font-size:.95rem;color:var(--text-secondary)}.step-connector{display:none;position:absolute;top:40px;right:-50%;transform:translate(-50%);color:#d1d5db}@media(min-width:1024px){.step-connector{display:block}}.interest-form-section{background:linear-gradient(135deg,#0056b3,#004494);padding:var(--spacing-xl) 0;color:#fff}.form-wrapper{max-width:600px;margin:0 auto;background-color:#fff;padding:var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);color:var(--text-primary)}.form-header{text-align:center;margin-bottom:var(--spacing-lg)}.form-title{font-size:1.75rem;color:var(--primary-color);margin-bottom:var(--spacing-sm)}.form-subtitle{color:var(--text-secondary)}.interest-form{display:flex;flex-direction:column;gap:var(--spacing-md)}.form-group{display:flex;flex-direction:column;gap:6px}.form-label{font-weight:600;font-size:.9rem}.form-input,.form-select{padding:10px 12px;border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:1rem;font-family:inherit;transition:border-color .2s}.form-input:focus,.form-select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #0056b31a}.radio-group{display:flex;flex-direction:column;gap:var(--spacing-sm)}@media(min-width:480px){.radio-group{flex-direction:row;gap:var(--spacing-lg)}}.radio-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:.95rem}.submit-btn{width:100%;margin-top:var(--spacing-sm);padding:12px;font-size:1.1rem}:root{--primary-color: #0056b3;--primary-hover: #004494;--secondary-color: #28a745;--secondary-hover: #218838;--accent-color: #ffc107;--text-primary: #333333;--text-secondary: #666666;--text-light: #ffffff;--bg-body: #f8f9fa;--bg-white: #ffffff;--border-color: #e9ecef;--font-family: "Inter", system-ui, -apple-system, sans-serif;--font-size-base: 16px;--font-size-h1: 2.5rem;--font-size-h2: 2rem;--font-size-h3: 1.75rem;--font-size-large: 1.25rem;--font-size-small: .875rem;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 2rem;--spacing-xl: 4rem;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 16px;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(0,0,0,.1);--shadow-md: 0 4px 6px rgba(0,0,0,.1);--shadow-lg: 0 10px 15px rgba(0,0,0,.1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-body);color:var(--text-primary);line-height:1.6}a{text-decoration:none;color:inherit}ul{list-style:none}button{cursor:pointer;border:none;background:none;font-family:inherit}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.section{padding:var(--spacing-xl) 0}