:root{--primary: #F26522;--primary-dark: #A83B0A;--primary-action: #B54310;--primary-soft: #FDEEE4;--ink: #1F2328;--dark: #2B2E36;--surface: #FFFFFF;--surface-alt: #FAF7F4;--border: #EAE5E0;--accent: #0FA3A3;--muted: #5B6168;--success: #1F9D55;--zalo: #0068FF;--radius: 12px;--radius-sm: 10px;--shadow: 0 2px 8px rgba(31, 35, 40, .08);--shadow-lg: 0 12px 32px rgba(31, 35, 40, .12);--font: "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--container: 1160px}*,*:before,*:after{box-sizing:border-box}*{margin:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font);color:var(--ink);background:var(--surface);line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased}body.modal-open{overflow:hidden}img,svg{display:block;max-width:100%}a{color:var(--primary-dark);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;cursor:pointer}input,select,textarea{font-family:inherit;font-size:1rem}h1,h2,h3,h4{line-height:1.25;font-weight:700;letter-spacing:-.01em}.container{max-width:var(--container);margin:0 auto;padding:0 20px}.section{padding:72px 0}.section-alt{background:var(--surface-alt)}.section-head{max-width:680px;margin:0 auto 44px;text-align:center}.section-head h2{font-size:clamp(1.6rem,3.4vw,2.2rem);margin-bottom:12px}.section-head p{color:var(--muted);font-size:1.05rem}.eyebrow{display:inline-block;color:var(--primary-dark);background:var(--primary-soft);font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:6px 14px;border-radius:999px;margin-bottom:14px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:12px 28px;border-radius:var(--radius-sm);font-weight:600;font-size:1rem;border:2px solid transparent;text-decoration:none!important;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .12s ease,box-shadow .18s ease}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--primary-action);color:#fff;box-shadow:none}.btn-primary:hover{background:var(--primary-dark);color:#fff}.btn-outline{background:transparent;color:var(--ink);border-color:var(--border)}.btn-outline:hover{border-color:var(--primary);color:var(--primary-dark)}.btn-white{background:#fff;color:var(--primary-dark)}.btn-white:hover{background:var(--surface-alt)}.btn-ghost-white{background:#ffffff24;color:#fff;border-color:#ffffff8c}.btn-ghost-white:hover{background:#ffffff3d;color:#fff}.btn-lg{min-height:56px;padding:14px 34px;font-size:1.05rem}.btn-block{width:100%}.topbar{background:var(--dark);color:#ffffffe0;font-size:.82rem;padding:7px 0}.topbar .container{display:flex;flex-wrap:wrap;gap:4px 22px;justify-content:center}.topbar a{color:#fff;font-weight:600}.topbar .check{color:#6bcb77;font-weight:700}.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--border);transition:box-shadow .2s ease}.site-header.scrolled{box-shadow:var(--shadow-lg)}.site-header .container{display:flex;align-items:center;gap:24px;min-height:68px}.logo{font-size:1.3rem;font-weight:800;letter-spacing:-.02em;color:var(--ink);text-decoration:none!important;white-space:nowrap}.logo .o{color:var(--primary)}.logo .tld{color:var(--muted);font-weight:600;font-size:.95em}.main-nav{display:flex;gap:4px;margin-left:auto;align-items:center}.main-nav a{color:var(--ink);font-weight:500;font-size:.95rem;padding:10px 13px;border-radius:8px;text-decoration:none!important}.main-nav a:hover{background:var(--surface-alt);color:var(--primary-dark)}.header-actions{display:flex;align-items:center;gap:14px}.lang-switch{display:inline-flex;border:1px solid var(--border);border-radius:8px;overflow:hidden;font-size:.82rem;font-weight:700}.lang-switch a{padding:6px 11px;color:var(--muted);text-decoration:none!important}.lang-switch a.active{background:var(--primary-action);color:#fff}.lang-switch a:not(.active):hover{background:var(--surface-alt)}.header-cta{min-height:44px;padding:8px 20px;font-size:.95rem}.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:8px;width:44px;height:44px;align-items:center;justify-content:center}.nav-toggle svg{width:22px;height:22px;stroke:var(--ink)}.hero{background:var(--surface-alt);padding:72px 0 84px;overflow:hidden}.hero .container{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px;align-items:center}.hero h1{font-size:clamp(1.9rem,4.2vw,2.9rem);margin:0 0 18px}.hero h1 .hl{color:var(--primary)}.hero .sub{color:var(--muted);font-size:1.1rem;margin-bottom:30px;max-width:540px}.hero-ctas{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}.trust-row{display:flex;flex-wrap:wrap;gap:8px 22px;color:var(--muted);font-size:.9rem;font-weight:500}.trust-row span{display:inline-flex;align-items:center;gap:7px}.trust-row .dot{color:var(--success);font-weight:800}.stats{background:var(--dark);color:#fff;padding:40px 0}.stats .container{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}.stat b{display:block;font-size:clamp(1.5rem,3vw,2rem);color:var(--primary);letter-spacing:-.02em}.stat span{color:#ffffffb8;font-size:.9rem}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.feature-card{padding:24px 0 0;border-top:2px solid var(--border)}.feature-card h3{font-size:1.08rem;margin-bottom:8px}.feature-card p{color:var(--muted);font-size:.94rem}.compare-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border)}.compare{width:100%;border-collapse:collapse;background:var(--surface);min-width:620px}.compare th,.compare td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--border);font-size:.95rem}.compare thead th{background:var(--dark);color:#fff;font-size:.9rem}.compare thead th.foxit-col{background:var(--primary-action)}.compare tbody tr:last-child td{border-bottom:none}.compare td.good{color:var(--success);font-weight:600}.compare td.meh{color:var(--muted)}.compare td:first-child{font-weight:600}.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;align-items:stretch}.price-card{position:relative;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:30px 24px 26px;box-shadow:var(--shadow)}.price-card.featured{border:2px solid var(--primary);box-shadow:none}.ribbon{position:absolute;top:-14px;left:50%;transform:translate(-50%);background:var(--primary-action);color:#fff;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;padding:5px 16px;border-radius:999px;white-space:nowrap;box-shadow:none}.price-card h3{font-size:1.05rem}.price-card .tagline{color:var(--muted);font-size:.85rem;margin:4px 0 18px}.price-card .price{font-size:1.75rem;font-weight:800;letter-spacing:-.02em;color:var(--ink)}.price-card .price small{font-size:.85rem;font-weight:500;color:var(--muted)}.price-card .price-note{color:var(--muted);font-size:.8rem;margin-bottom:18px}.price-card ul{list-style:none;padding:0;margin:0 0 22px;display:grid;gap:9px;flex:1}.price-card ul li{position:relative;padding-left:26px;font-size:.88rem;color:#3a4047}.price-card ul li:before{content:"";position:absolute;left:0;top:3px;width:16px;height:16px;border-radius:50%;background:var(--primary-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23D9511A' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 13l4 4 10-10'/%3E%3C/svg%3E") center/10px no-repeat}.price-card .consult-link{display:block;text-align:center;margin-top:12px;font-size:.86rem;font-weight:600}.pricing-note{text-align:center;color:var(--muted);font-size:.92rem;margin-top:30px}.pricing-extras{margin-top:14px;text-align:center;font-size:.92rem;background:var(--primary-soft);color:var(--primary-dark);font-weight:600;border-radius:var(--radius-sm);padding:13px 18px}.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.why-item{text-align:center;padding:10px 8px}.why-item .icon{width:60px;height:60px;margin:0 auto 16px;border-radius:50%;background:var(--primary-soft);display:flex;align-items:center;justify-content:center}.why-item .icon svg{width:30px;height:30px}.why-item h3{font-size:1rem;margin-bottom:6px}.why-item p{color:var(--muted);font-size:.9rem}.faq-list{max-width:780px;margin:0 auto;display:grid;gap:14px}.faq-list details{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow);overflow:hidden}.faq-list summary{cursor:pointer;list-style:none;padding:18px 54px 18px 22px;font-weight:600;position:relative;font-size:.98rem}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);width:28px;height:28px;border-radius:50%;background:var(--primary-soft);color:var(--primary-dark);font-weight:700;display:flex;align-items:center;justify-content:center;transition:transform .2s ease}.faq-list details[open] summary:after{transform:translateY(-50%) rotate(45deg)}.faq-list details p{padding:0 22px 20px;color:var(--muted);font-size:.94rem}.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.news-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease}.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.news-card .thumb{height:140px;background:radial-gradient(260px 160px at 20% 10%,rgba(255,255,255,.22),transparent 60%),linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);display:flex;align-items:center;justify-content:center}.news-card .thumb svg{width:54px;height:54px;opacity:.92}.news-card .thumb img{width:100%;height:100%;object-fit:cover}.news-card .body{padding:22px;display:flex;flex-direction:column;gap:8px;flex:1}.news-card time{color:var(--muted);font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.news-card h3{font-size:1.02rem}.news-card h3 a{color:var(--ink)}.news-card h3 a:hover{color:var(--primary-dark);text-decoration:none}.news-card p{color:var(--muted);font-size:.9rem;flex:1}.news-card .more{font-weight:600;font-size:.9rem}.news-more{text-align:center;margin-top:36px}.final-cta{background:linear-gradient(120deg,var(--primary-action) 0%,var(--primary-dark) 100%);color:#fff;padding:72px 0;text-align:center}.final-cta h2{font-size:clamp(1.6rem,3.6vw,2.3rem);margin-bottom:12px}.final-cta p{color:#ffffffeb;font-size:1.08rem;max-width:560px;margin:0 auto 32px}.final-cta .ctas{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}.site-footer{background:var(--dark);color:#ffffffc7;padding:60px 0 0;font-size:.92rem}.site-footer .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}.site-footer h3{color:#fff;font-size:.95rem;margin-bottom:16px;text-transform:uppercase;letter-spacing:.05em}.site-footer ul{list-style:none;padding:0;display:grid;gap:9px}.site-footer a{color:#ffffffc7}.site-footer a:hover{color:#fff}.site-footer .logo{color:#fff;display:inline-block;margin-bottom:14px}.site-footer .legal{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;text-align:center;font-size:.82rem;color:#ffffff8c}.contact-dock{position:fixed;right:18px;bottom:20px;z-index:70;display:flex;flex-direction:column;gap:12px}.dock-btn{position:relative;width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 6px 18px #1f232847;text-decoration:none!important;transition:transform .15s ease}.dock-btn:hover{transform:scale(1.08)}.dock-btn svg{width:26px;height:26px}.dock-btn .tip{position:absolute;right:calc(100% + 12px);top:50%;transform:translateY(-50%);background:var(--dark);color:#fff;font-size:.78rem;font-weight:600;padding:6px 12px;border-radius:7px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .15s ease}.dock-btn:hover .tip,.dock-btn:focus-visible .tip{opacity:1}.dock-phone{background:var(--primary-action)}.dock-zalo{background:var(--zalo)}.dock-mail{background:var(--dark)}.om-overlay{position:fixed;inset:0;z-index:100;background:#1f23288c;display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;pointer-events:none;transition:opacity .2s ease}.om-overlay.open{opacity:1;pointer-events:auto}.om-dialog{background:var(--surface);border-radius:var(--radius);width:100%;max-width:520px;max-height:calc(100vh - 40px);overflow-y:auto;padding:30px 28px;position:relative;box-shadow:var(--shadow-lg);transform:translateY(14px);transition:transform .2s ease}.om-overlay.open .om-dialog{transform:translateY(0)}.om-close{position:absolute;top:14px;right:14px;width:40px;height:40px;border:none;background:var(--surface-alt);border-radius:50%;font-size:1.3rem;line-height:1;color:var(--muted)}.om-close:hover{background:var(--border);color:var(--ink)}.om-dialog h3{font-size:1.3rem;margin-bottom:6px;padding-right:36px}.om-dialog .om-sub{color:var(--muted);font-size:.9rem;margin-bottom:22px}.form-grid{display:grid;gap:15px}.form-row-2{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field label{display:block;font-weight:600;font-size:.86rem;margin-bottom:6px}.field label .req{color:var(--primary)}.field input,.field select,.field textarea{width:100%;min-height:48px;padding:11px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);transition:border-color .15s ease,box-shadow .15s ease}.field textarea{min-height:84px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #f265222e}.field .err{color:#d23b2e;font-size:.8rem;margin-top:5px;display:none}.field.invalid input{border-color:#d23b2e}.field.invalid .err{display:block}.om-success{text-align:center;padding:16px 4px 6px;display:none}.om-success.show{display:block}.om-success .check-wrap{width:84px;height:84px;margin:0 auto 20px;border-radius:50%;background:#1f9d551a;display:flex;align-items:center;justify-content:center}.om-success .check-wrap svg{width:46px;height:46px}.om-success h4{font-size:1.35rem;margin-bottom:10px;color:var(--success)}.om-success p{color:var(--muted);margin-bottom:24px}.om-success .ctas{display:grid;gap:12px}.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:56px}.contact-card{display:flex;align-items:center;gap:18px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px 24px;text-decoration:none!important;color:var(--ink);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.contact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary)}.contact-card .icon{flex:0 0 56px;width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff}.contact-card .icon svg{width:26px;height:26px}.contact-card.phone .icon{background:var(--primary-action)}.contact-card.zalo .icon{background:var(--zalo)}.contact-card.mail .icon{background:var(--dark)}.contact-card b{display:block;font-size:1.05rem}.contact-card span{color:var(--muted);font-size:.88rem}.inline-form{max-width:640px;margin:0 auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:36px 32px}.inline-form h2{font-size:1.4rem;margin-bottom:22px;text-align:center}.page-hero{background:linear-gradient(180deg,#FFFDFB 0%,var(--surface-alt) 100%);padding:56px 0 48px;text-align:center}.page-hero h1{font-size:clamp(1.7rem,3.6vw,2.4rem);margin-bottom:10px}.page-hero p{color:var(--muted);max-width:620px;margin:0 auto}.article{max-width:760px;margin:0 auto}.article-head{text-align:center;margin-bottom:40px}.article-head time{color:var(--primary-dark);font-weight:700;font-size:.84rem;text-transform:uppercase;letter-spacing:.05em}.article-head h1{font-size:clamp(1.6rem,3.4vw,2.3rem);margin:10px 0 14px}.article-head .desc{color:var(--muted);font-size:1.05rem}.prose{font-size:1.02rem;color:#33383e}.prose h2{font-size:1.4rem;margin:36px 0 14px;color:var(--ink)}.prose h3{font-size:1.15rem;margin:28px 0 12px}.prose p{margin-bottom:16px}.prose ul,.prose ol{margin:0 0 16px 22px}.prose li{margin-bottom:6px}.prose table{width:100%;border-collapse:collapse;margin:20px 0;font-size:.95rem}.prose th,.prose td{border:1px solid var(--border);padding:11px 14px;text-align:left}.prose th{background:var(--surface-alt)}.prose hr{border:none;border-top:1px solid var(--border);margin:32px 0}.prose strong{color:var(--ink)}.article-back{margin-top:44px}.notfound{text-align:center;padding:110px 20px}.notfound .code{font-size:5.5rem;font-weight:800;color:var(--primary);line-height:1;letter-spacing:-.04em}.notfound h1{font-size:1.7rem;margin:14px 0 10px}.notfound p{color:var(--muted);margin-bottom:30px}@keyframes float-soft{0%,to{transform:translateY(0)}50%{transform:translateY(-12px)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}html{scroll-behavior:auto}}@media(max-width:1024px){.hero .container{grid-template-columns:1fr;gap:44px}.hero .hero-copy{text-align:center}.hero .sub{margin-left:auto;margin-right:auto}.hero-ctas,.trust-row{justify-content:center}.features-grid,.pricing-grid,.why-grid,.news-grid{grid-template-columns:repeat(2,1fr)}.contact-cards{grid-template-columns:1fr}.site-footer .cols{grid-template-columns:1fr 1fr}.main-nav{display:none}.nav-toggle{display:flex;margin-left:auto}.site-header .container{gap:14px}.main-nav.open{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);padding:12px 20px 18px;gap:2px}.main-nav.open a{padding:13px 10px;font-size:1.02rem}}@media(max-width:720px){.section{padding:54px 0}.hero{padding:48px 0 60px}.hero-ctas .btn{width:100%}.stats .container{grid-template-columns:repeat(2,1fr)}.features-grid,.pricing-grid,.why-grid,.news-grid{grid-template-columns:1fr}.site-footer .cols{grid-template-columns:1fr;gap:30px}.form-row-2{grid-template-columns:1fr}.final-cta .ctas .btn{width:100%}.header-cta{display:none}.topbar{font-size:.75rem}.inline-form{padding:28px 20px}.btn{width:auto}.om-dialog{padding:26px 20px}}[hidden]{display:none!important}:focus-visible{outline:3px solid currentColor;outline-offset:4px}.skip-link{position:fixed;top:-100px;left:16px;z-index:200;padding:12px 20px;background:#fff;color:#1f2328}.skip-link:focus{top:12px}.hero .container>*,.feature-row>*,.fs-row>*,.article{min-width:0}.news-card h3,.news-card h3 a{line-height:1.4}.pricing-note,.pricing-extras{max-width:56ch;margin-left:auto;margin-right:auto}.faq-list details p{max-width:60ch}.compare-wrap,.compare-table-wrap{padding:8px}.prose,.article-body{overflow-wrap:anywhere}.prose pre,.article-body pre{max-width:100%;overflow-x:auto;padding:18px}.prose table,.article-body table{display:block;max-width:100%;overflow-x:auto}.form-submit-error{color:#a32222;padding:12px 0;font-size:.95rem}.om-dialog,.modal-dialog{max-height:calc(100dvh - 40px)}@media(max-width:719px){.header-cta{display:none}.site-header .container,.header-actions{gap:8px}.site-header .logo{font-size:1.08rem}.lang-switch a{min-height:44px;display:flex;align-items:center}.nav-toggle{flex-shrink:0;min-width:44px}.hero .container{grid-template-columns:minmax(0,1fr)}.cad-title,.fs-title{overflow:hidden;text-overflow:ellipsis}.contact-dock{flex-direction:column;right:max(14px,env(safe-area-inset-right));bottom:max(18px,env(safe-area-inset-bottom));gap:12px}.dock-btn{width:60px;height:60px}.dock-btn svg{width:30px;height:30px}.dock-zalo svg{width:38px;height:38px}.site-footer{padding-bottom:76px}}#tinh-nang{overflow-x:clip}