:root{--primary-color:#e30613;--primary-dark:#b3050f;--accent-color:#f7941e;--dark-deep:#0f0f0f;--text-main:#1d1d1f;--text-secondary:#6e6e73;--bg-light:#f5f5f7;--white:#fff;--fs-h1:3.5rem;--fs-h2:2.5rem;--fs-h3:1.75rem;--fs-h4:1.375rem;--fs-body:1.063rem;--fs-small:.875rem;--radius-lg:24px;--radius-md:16px;--shadow-lg:0 20px 50px rgba(0,0,0,.08);--shadow-md:0 10px 30px rgba(0,0,0,.05)}*{box-sizing:border-box}html{font-size:16px}body{margin:0;padding:0;font-family:'SF Pro Display','Roboto',-apple-system,BlinkMacSystemFont,sans-serif;color:var(--text-main);background-color:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;font-size:var(--fs-body)}h1,h2,h3,h4{margin-top:0;font-weight:800;line-height:1.2;color:#000}h1{font-size:var(--fs-h1)}h2{font-size:var(--fs-h2)}h3{font-size:var(--fs-h3)}h4{font-size:var(--fs-h4)}a{color:var(--primary-color);text-decoration:none;transition:.3s}ul{list-style:none;padding:0;margin:0}.container{max-width:1200px;margin:0 auto;padding:0 20px}section{padding:80px 0}.row{display:flex;flex-wrap:wrap;margin:0 -15px}[class*=large-]{padding:0 15px;width:100%}.large-12{flex:0 0 100%}.large-6{flex:0 0 50%}.large-4{flex:0 0 33.333%}.large-3{flex:0 0 25%}.main-header{background:rgba(255,255,255,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);position:sticky;top:0;z-index:1000;padding:15px 0;border-bottom:1px solid rgba(0,0,0,.05)}.header-inner{display:flex;justify-content:space-between;align-items:center}.logo-text{font-size:1.75rem;font-weight:900;color:#000;text-transform:lowercase;letter-spacing:-1px}.logo-text span{color:var(--primary-color)}.nav-menu{display:flex}.nav-menu li a{color:var(--text-main);font-weight:600;padding:10px 15px;font-size:.938rem}.nav-menu li a:hover{color:var(--primary-color)}.btn-hotline{background:var(--primary-color);color:#fff !important;padding:10px 22px;border-radius:8px;font-weight:700;box-shadow:0 10px 20px rgba(227,6,19,.2);font-size:.938rem;display:inline-flex;align-items:center}.viettel-main-banner{padding:0;width:100%;position:relative;line-height:0;overflow:hidden}.banner-img-full{width:100%;height:auto;display:block;border-radius:0}.banner-wave{position:absolute;bottom:-1px;left:0;width:100%;overflow:hidden;line-height:0;transform:rotate(180deg)}.banner-wave svg{position:relative;display:block;width:calc(100% + 1.3px);height:80px}.banner-wave .shape-fill{fill:#fff}@media (max-width:768px){.banner-wave svg{height:40px}}.hero-content-card{background:#fff;padding:60px;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);text-align:center;border:1px solid rgba(0,0,0,.02)}.hero-main-title{font-size:2.8rem;color:var(--dark-deep);margin-bottom:20px;font-weight:900;line-height:1.2}.hero-subtitle{font-size:1.3rem;color:var(--primary-color);font-weight:700;margin-bottom:30px;text-transform:uppercase;letter-spacing:1px}.hero-description-text{font-size:1.1rem;line-height:1.9;color:var(--text-secondary);text-align:justify;max-width:1000px;margin:0 auto 40px}.hero-cta-wrap{margin-top:20px}.hero-cta-btn{display:inline-flex;align-items:center;background:var(--primary-color);color:#fff !important;padding:18px 45px;border-radius:8px;font-weight:800;font-size:1.1rem;box-shadow:0 15px 35px rgba(227,6,19,.25);transition:all .4s ease}.hero-cta-btn:hover{transform:translateY(-5px);box-shadow:0 20px 45px rgba(227,6,19,.35);background:var(--primary-dark)}.hero-cta-btn i{margin-right:10px}.section-heading{font-size:2.5rem;text-align:center;margin-bottom:60px}.benefits-flex{display:flex;flex-wrap:wrap;gap:20px;justify-content:center}.benefit-card-luxury{background:var(--bg-light);padding:40px 30px;border-radius:var(--radius-md);flex:1;min-width:280px;text-align:center;transition:.4s}.benefit-card-luxury:hover{background:#fff;transform:translateY(-8px);box-shadow:var(--shadow-md)}.benefit-desc{font-size:1rem;color:var(--text-secondary);margin:0}.icon-wrap{font-size:2rem;color:var(--primary-color);width:70px;height:70px;background:#fff;border-radius:18px;display:flex;align-items:center;justify-content:center;margin:0 auto 25px;box-shadow:var(--shadow-md)}.pricing-group{margin-bottom:80px}.group-title{font-size:1.75rem;margin-bottom:35px;border-left:5px solid var(--primary-color);padding-left:20px}.pricing-grid-luxury{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px, 1fr));gap:25px}.pricing-item-card{background:#fff;border-radius:var(--radius-lg);padding:40px 30px;box-shadow:var(--shadow-md);transition:.4s;border:1px solid rgba(0,0,0,.02)}.pricing-item-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg);border-color:var(--primary-color)}.card-header h4{font-size:1.5rem;color:var(--primary-color);margin-bottom:25px}.price-row{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid #f0f0f0}.price-row .label{color:var(--text-secondary);font-size:.938rem}.price-row .value{font-weight:800;font-size:1.25rem;color:var(--dark-deep)}.select-btn{margin-top:30px;display:block;text-align:center;background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);color:#fff !important;padding:16px;border-radius:8px;font-weight:800;font-size:1.05rem;letter-spacing:.5px;text-transform:uppercase;box-shadow:0 10px 25px rgba(227,6,19,.2);transition:all .4s cubic-bezier(.175,.885,.32,1.275)}.pricing-item-card:hover .select-btn{transform:translateY(-5px);box-shadow:0 15px 35px rgba(227,6,19,.4);filter:brightness(1.1)}.section-header-center{text-align:center;margin-bottom:60px}.section-header-center .sub-title{display:block;color:var(--primary-color);font-weight:700;text-transform:uppercase;letter-spacing:2px;font-size:.875rem;margin-bottom:15px}.pricing-notice{margin-top:80px;padding:50px;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);text-align:left;border:1px solid rgba(0,0,0,.02)}.pricing-notice:before{content:"Lưu ý quan trọng";display:block;font-size:1.5rem;font-weight:800;margin-bottom:30px;color:var(--primary-color);border-bottom:3px solid var(--primary-color);width:fit-content;padding-bottom:8px}.notice-text{font-size:1.063rem;line-height:1.8;color:#555}.notice-text p{margin-bottom:20px;padding:0;border:none;display:block}.notice-text p:before{display:none}.notice-text strong{color:var(--dark-deep)}@media (max-width:768px){.pricing-notice{margin-top:80px}.pricing-notice:before{font-size:1.5rem}.notice-text p{padding:20px 0;font-size:1rem}}@media (max-width:768px){.pricing-notice{padding:30px 20px;flex-direction:column;gap:15px;border-left-width:4px}.pricing-notice i{font-size:2rem}.notice-text{font-size:.95rem}}.faq-accordion-luxury{max-width:800px;margin:0 auto}.faq-item-luxury{background:#fff;border-radius:18px;margin-bottom:15px;box-shadow:var(--shadow-md);overflow:hidden}.faq-question-luxury{padding:20px 30px;display:flex;justify-content:space-between;cursor:pointer;font-weight:700;font-size:1.125rem}.faq-answer-luxury{max-height:0;overflow:hidden;transition:.3s;padding:0 30px;color:var(--text-secondary);font-size:1rem}.faq-item-luxury.active .faq-answer-luxury{padding:20px 30px;border-top:1px solid #f0f0f0}.site-footer{background:#0a0a0a;color:#999;padding:100px 0 0;position:relative;border-top:4px solid var(--primary-color)}.site-footer:before{content:'';position:absolute;top:0;left:0;width:100%;height:1px;background:linear-gradient(90deg,transparent,rgba(227,6,19,.5),transparent);box-shadow:0 0 15px rgba(227,6,19,.8)}.footer-row{display:flex;flex-wrap:wrap;margin:0 -20px}.footer-col{flex:1;min-width:250px;padding:0 20px;margin-bottom:60px}.footer-title{color:#fff;font-size:1.2rem;margin-bottom:30px;font-weight:800;text-transform:uppercase;letter-spacing:1px;position:relative;padding-bottom:15px}.footer-title:after{content:'';position:absolute;bottom:0;left:0;width:40px;height:3px;background:var(--primary-color);border-radius:2px}.footer-about-text{line-height:1.8;font-size:.95rem}.footer-links-list,.footer-contact-list{list-style:none;padding:0;margin:0}.footer-links-list li,.footer-contact-list li{margin-bottom:15px;font-size:.95rem;display:flex;align-items:flex-start}.footer-links-list li a,.footer-contact-list li a{color:#888;transition:all .3s ease}.footer-links-list li a:hover,.footer-contact-list li a:hover{color:var(--white);transform:translateX(5px);text-shadow:0 0 10px rgba(255,255,255,.3)}.footer-contact-list li i{color:var(--primary-color);margin-right:15px;margin-top:5px;font-size:1.1rem;width:20px;text-align:center}.footer-copyright{border-top:1px solid rgba(255,255,255,.05);padding:30px 0;text-align:center;font-size:.9rem;color:#666}.footer-copyright a{color:var(--primary-color);font-weight:600}.footer-copyright a:hover{color:#fff}.mobile-toggle{display:none;background:0 0;border:none;flex-direction:column;gap:5px;cursor:pointer}.mobile-toggle .bar{width:22px;height:2px;background:#000;transition:.3s}@media (max-width:991px){.nav-menu{display:none}.mobile-toggle{display:flex}.hero-main-title{font-size:2.75rem}.section-heading{font-size:2rem}}@media (max-width:767px){section{padding:50px 0}.hero-main-title{font-size:2.25rem}.hero-subtitle{font-size:1.125rem}.promo-box{padding:35px 20px;margin-top:-40px}.benefit-card-luxury{padding:30px 20px}.pricing-grid-luxury{grid-template-columns:1fr}.footer-col{flex:0 0 100%}.btn-hotline{display:none}}.archive-news-section{background-color:var(--bg-light);padding:100px 0}.page-header{text-align:center;margin-bottom:60px}.page-title{font-size:3rem;font-weight:900;color:var(--dark-deep);position:relative;display:inline-block;padding-bottom:15px}.page-title:after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:80px;height:4px;background:var(--primary-color);border-radius:2px}.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px, 1fr));gap:30px}.news-card{height:100%}.news-card-inner{background:#fff;border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-md);transition:all .4s ease;height:100%;display:flex;flex-direction:column;border:1px solid rgba(0,0,0,.03)}.news-card-inner:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg)}.news-thumbnail{overflow:hidden;aspect-ratio:16/9}.news-thumbnail img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}.news-card-inner:hover .news-thumbnail img{transform:scale(1.1)}.news-content{padding:30px;flex:1;display:flex;flex-direction:column}.news-meta{font-size:.875rem;color:var(--text-secondary);margin-bottom:15px;font-weight:600}.news-meta i{color:var(--primary-color);margin-right:5px}.news-title{font-size:1.375rem;margin-bottom:15px;line-height:1.4}.news-title a{color:var(--dark-deep)}.news-title a:hover{color:var(--primary-color)}.news-excerpt{font-size:1rem;color:var(--text-secondary);line-height:1.7;margin-bottom:25px;flex:1}.read-more-link{font-weight:700;font-size:.938rem;display:flex;align-items:center;gap:8px;color:var(--primary-color)}.read-more-link:hover gap{gap:12px}.pagination{grid-column:1/-1;display:flex;justify-content:center;gap:10px;margin-top:60px}.pagination .page-numbers{width:45px;height:45px;display:flex;align-items:center;justify-content:center;background:#fff;border-radius:8px;font-weight:700;color:var(--dark-deep);box-shadow:0 4px 10px rgba(0,0,0,.05);transition:all .3s}.pagination .page-numbers:hover,.pagination .page-numbers.current{background:var(--primary-color);color:#fff;box-shadow:0 8px 20px rgba(227,6,19,.2)}@media (max-width:768px){.news-grid{grid-template-columns:1fr}.archive-news-section{padding:60px 0}.page-title{font-size:2.25rem}}.mobile-menu-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(15,15,15,.95);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);z-index:2000;display:none;opacity:0;transition:opacity .4s ease}.mobile-menu-overlay.active{display:block;opacity:1}.mobile-menu-content{background:#fff;width:85%;max-width:320px;height:100%;position:absolute;right:-320px;top:0;padding:0;display:flex;flex-direction:column;box-shadow:-10px 0 50px rgba(0,0,0,.2);transition:right .4s cubic-bezier(.165,.84,.44,1)}.mobile-menu-overlay.active .mobile-menu-content{right:0}.mobile-menu-header{padding:30px 25px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #f5f5f7}.mobile-logo{font-size:1.5rem;font-weight:900;color:#000;text-transform:lowercase;letter-spacing:-1px}.mobile-logo .v-letter{color:var(--primary-color)}.close-menu{width:40px;height:40px;border-radius:8px;background:#f5f5f7;border:none;color:#1d1d1f;display:flex;align-items:center;justify-content:center;font-size:1.2rem;cursor:pointer}.mobile-menu-body{flex:1;padding:20px 0;overflow-y:auto}.mobile-nav-list li{border:none}.mobile-nav-list li a{display:block;padding:15px 25px;color:#1d1d1f;font-weight:700;font-size:1.1rem;transition:all .3s;position:relative}.mobile-nav-list li a:active,.mobile-nav-list li a:hover{color:var(--primary-color);background:rgba(227,6,19,.03)}.mobile-menu-footer{padding:30px 25px;background:#f9f9fb;border-top:1px solid #eee}.mobile-contact-item{margin-bottom:15px}.mobile-contact-item .label{display:block;font-size:.8rem;color:#86868b;text-transform:uppercase;letter-spacing:1px;font-weight:600;margin-bottom:5px}.mobile-hotline-link{font-size:1.5rem;font-weight:800;color:var(--primary-color) !important}.mobile-tagline{font-size:.85rem;color:#aaa;font-style:italic}