:root{--primary:#2563eb;--primary-dark:#1d4ed8;--navy:#0f172a;--sky:#0ea5e9;--bg:#f8fafc;--white:#fff;--text:#1e293b;--muted:#64748b;--line:#e2e8f0;--success:#16a34a;--radius:16px;--shadow:0 18px 45px rgba(15,23,42,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Be Vietnam Pro",Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:#fff;line-height:1.65}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.container{width:min(1160px,calc(100% - 32px));margin:auto}.narrow{width:min(820px,calc(100% - 32px));margin:auto}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:16px;top:16px;background:#fff;padding:10px;z-index:999}.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid 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rgba(37,99,235,.24)}.btn-primary:hover{background:var(--primary-dark)}.btn-outline{border-color:#cbd5e1;background:#fff;color:var(--navy)}.btn-lg{min-height:52px;padding:13px 22px}.hero{padding:78px 0 70px;background:linear-gradient(180deg,#eff6ff 0,#fff 100%);overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:62px}.eyebrow{display:inline-flex;align-items:center;color:var(--primary);font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.11em;margin-bottom:14px}.eyebrow.light{color:#bfdbfe}.hero h1,.page-hero h1,.article-hero h1,.detail-hero h1{font-size:clamp(38px,5vw,62px);line-height:1.08;letter-spacing:-.045em;color:var(--navy);margin:0 0 22px}.hero p{font-size:18px;color:var(--muted);max-width:690px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.trust-list{display:flex;gap:14px 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h2{font-size:20px;color:var(--navy);margin:16px 0 8px}.service-card p{color:var(--muted)}.service-card ul,.price-card ul{padding:0;list-style:none}.service-card li,.price-card li{margin:9px 0}.icon-box{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;background:#dbeafe;color:var(--primary);font-weight:900}.service-card>a:not(.btn){font-weight:800;color:var(--primary)}.problem-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.problem-grid article{padding:24px}.problem-grid article>span{font-size:12px;font-weight:900;color:var(--primary)}.problem-grid h3{margin:8px 0;color:var(--navy)}.problem-grid p{color:var(--muted);margin:0}.template-grid{grid-template-columns:repeat(3,1fr)}.template-card{overflow:hidden}.template-thumb{display:block;position:relative;background:#e2e8f0;aspect-ratio:16/10;overflow:hidden}.template-thumb img{width:100%;height:100%;object-fit:cover;transition:.3s}.template-card:hover .template-thumb 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1fr}.content-sidebar,.article-layout{grid-template-columns:1fr}.sticky-card{position:static}.blog-layout{grid-template-columns:1fr}.blog-sidebar{display:grid;grid-template-columns:1fr 1fr;gap:18px}.footer-grid{grid-template-columns:1fr 1fr}.project-grid.large .project-card{display:block}.section{padding:70px 0}}@media(max-width:640px){body{padding-bottom:64px}.container,.narrow{width:min(100% - 24px,1160px)}.header-inner{height:66px}.main-nav{top:66px}.hero{padding:48px 0}.hero h1{font-size:38px}.hero-grid{gap:24px}.device-stage{min-height:310px}.laptop{height:210px;top:35px}.tablet{width:105px;height:150px;left:0}.phone{width:74px;height:135px}.float-badge{font-size:12px}.section{padding:56px 0}.services-grid,.template-grid,.pricing-grid,.problem-grid,.testimonial-grid,.project-grid,.post-grid,.form-grid{grid-template-columns:1fr}.section-head.split{display:block}.section-head.split>a{margin-top:15px}.timeline{grid-template-columns:1fr 1fr}.benefit-list{grid-template-columns:1fr}.price-card.featured{transform:none}.project-grid.large .project-card{display:block}.faq-wrap,.lead-grid{gap:30px}.filter-bar{grid-template-columns:1fr}.gallery{grid-template-columns:1fr}.blog-sidebar{grid-template-columns:1fr}.article-meta{flex-wrap:wrap}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column;gap:10px}.desktop-only{display:none}.mobile-only{display:flex}.mobile-contact{position:fixed;left:0;right:0;bottom:0;height:62px;background:#fff;border-top:1px solid var(--line);z-index:1200;display:grid;grid-template-columns:repeat(3,1fr)}.mobile-contact a{display:grid;place-items:center;font-size:13px;font-weight:800}.mobile-contact a:last-child{background:var(--primary);color:#fff}.cta-banner{display:block}.cta-banner .btn{margin-top:18px}}

/* =========================================================
   DustinStudio Motion Pack v1.2.0
   Hiệu ứng nhẹ, không dùng thư viện ngoài, hỗ trợ reduced motion
   ========================================================= */

/* Thanh tiến trình đọc trang */
.scroll-progress{position:fixed;top:0;left:0;width:0;height:3px;z-index:2000;pointer-events:none;background:linear-gradient(90deg,var(--primary),var(--sky));box-shadow:0 0 14px rgba(37,99,235,.45);transition:width .08s linear}

/* Header thu gọn và đổ bóng khi cuộn */
.site-header,.header-inner{transition:height .28s ease,background-color .28s ease,box-shadow .28s ease,border-color .28s ease}
.site-header.is-scrolled{background:rgba(255,255,255,.985);border-color:rgba(203,213,225,.9);box-shadow:0 10px 35px rgba(15,23,42,.09)}
@media(min-width:981px){.site-header.is-scrolled .header-inner{height:68px}}

/* Gạch chân menu và trạng thái trang hiện tại */
.main-nav>a:not(.btn){position:relative;transition:color .25s ease}
.main-nav>a:not(.btn)::after{content:"";position:absolute;left:0;right:0;bottom:-7px;height:2px;border-radius:999px;background:var(--primary);transform:scaleX(0);transform-origin:right;transition:transform .28s ease}
.main-nav>a:not(.btn):hover::after,.main-nav>a:not(.btn).is-active::after{transform:scaleX(1);transform-origin:left}
.main-nav>a:not(.btn).is-active{color:var(--primary)}

/* Nút có ánh sáng lướt qua */
.btn{position:relative;isolation:isolate;transition:transform .25s ease,box-shadow .25s ease,background-color .25s ease,border-color .25s ease}
.btn-primary{overflow:hidden}
.btn-primary::after{content:"";position:absolute;z-index:-1;top:-60%;bottom:-60%;left:-45%;width:28%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent);transform:translateX(-240%) skewX(-20deg)}
@media(hover:hover) and (pointer:fine){.btn:hover{transform:translateY(-3px)}.btn-primary:hover{box-shadow:0 15px 34px rgba(37,99,235,.3)}.btn-primary:hover::after{animation:dsButtonShine .8s ease}.btn-outline:hover{border-color:#93c5fd;background:#eff6ff;color:var(--primary)}}
@keyframes dsButtonShine{to{transform:translateX(620%) skewX(-20deg)}}

/* Hero có chiều sâu nhưng vẫn nhẹ */
.hero{position:relative;isolation:isolate}
.hero::before,.hero::after{content:"";position:absolute;z-index:-1;border-radius:50%;filter:blur(2px);pointer-events:none}
.hero::before{width:360px;height:360px;right:-120px;top:-130px;background:radial-gradient(circle,rgba(14,165,233,.16),rgba(14,165,233,0) 70%)}
.hero::after{width:300px;height:300px;left:-140px;bottom:-150px;background:radial-gradient(circle,rgba(37,99,235,.12),rgba(37,99,235,0) 70%)}
html.js-effects .hero-copy>*{opacity:0;transform:translateY(22px);animation:dsHeroIn .72s cubic-bezier(.22,1,.36,1) forwards}
html.js-effects .hero-copy>*:nth-child(1){animation-delay:.06s}
html.js-effects .hero-copy>*:nth-child(2){animation-delay:.14s}
html.js-effects .hero-copy>*:nth-child(3){animation-delay:.22s}
html.js-effects .hero-copy>*:nth-child(4){animation-delay:.3s}
html.js-effects .hero-copy>*:nth-child(5){animation-delay:.38s}
html.js-effects .device-stage{opacity:0;animation:dsHeroVisualIn .9s .18s cubic-bezier(.22,1,.36,1) forwards,dsStageFloat 6s 1.2s ease-in-out infinite}
.device{will-change:transform;transition:transform .22s ease-out,box-shadow .3s ease}
.float-badge{animation:dsBadgePulse 3.4s ease-in-out infinite}
@keyframes dsHeroIn{to{opacity:1;transform:none}}
@keyframes dsHeroVisualIn{from{opacity:0;transform:translate3d(35px,24px,0) scale(.96)}to{opacity:1;transform:none}}
@keyframes dsStageFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
@keyframes dsBadgePulse{0%,100%{box-shadow:0 18px 45px rgba(15,23,42,.08)}50%{box-shadow:0 18px 45px rgba(37,99,235,.18)}}

/* Hiện dần khi cuộn */
html.js-effects .reveal-item{opacity:0;transform:translate3d(0,30px,0);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1);transition-delay:var(--reveal-delay,0ms)}
html.js-effects .reveal-item.reveal-left{transform:translate3d(-34px,0,0)}
html.js-effects .reveal-item.reveal-right{transform:translate3d(34px,0,0)}
html.js-effects .reveal-item.is-visible{opacity:1;transform:none}
html.js-effects .price-card.featured.reveal-item.is-visible{transform:translateY(-8px)}

/* Card hover tinh tế */
.service-card,.template-card,.price-card,.problem-grid article,.project-card,.testimonial-grid blockquote,.post-card,.sidebar-box,.contact-panel,.form-card,.timeline-item,.benefit-list>div{transition:transform .34s cubic-bezier(.22,1,.36,1),box-shadow .34s ease,border-color .34s ease,background-color .34s ease}
@media(hover:hover) and (pointer:fine){.service-card:hover,.template-card:hover,.problem-grid article:hover,.project-card:hover,.testimonial-grid blockquote:hover,.post-card:hover,.sidebar-box:hover,.contact-panel:hover{transform:translateY(-8px);border-color:#bfdbfe;box-shadow:0 20px 48px rgba(15,23,42,.11)}.price-card:hover{transform:translateY(-6px);border-color:#93c5fd;box-shadow:0 22px 52px rgba(15,23,42,.12)}.price-card.featured:hover{transform:translateY(-13px)}.timeline-item:hover{transform:translateY(-5px);border-left-color:var(--primary);box-shadow:0 14px 36px rgba(15,23,42,.08)}.benefit-list>div:hover{transform:translateY(-4px);background:rgba(255,255,255,.1);border-color:rgba(96,165,250,.45)}.service-card:hover .icon-box{transform:rotate(-6deg) scale(1.08);background:var(--primary);color:#fff}.template-card:hover .template-thumb img,.project-card:hover img,.post-card:hover img{transform:scale(1.055)}}
.icon-box{transition:transform .32s cubic-bezier(.22,1,.36,1),background-color .3s ease,color .3s ease}
.project-card img,.post-card img{transition:transform .55s cubic-bezier(.22,1,.36,1)}
.template-thumb::after,.project-card::after,.post-card::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(115deg,transparent 25%,rgba(255,255,255,.22) 48%,transparent 70%);transform:translateX(-130%);transition:transform .7s ease}
.template-thumb,.project-card,.post-card{position:relative}
@media(hover:hover) and (pointer:fine){.template-card:hover .template-thumb::after,.project-card:hover::after,.post-card:hover::after{transform:translateX(130%)}}

/* Quy trình và danh sách lợi ích có nhịp thị giác */
.timeline-item span{display:inline-grid;place-items:center;min-width:38px;height:30px;border-radius:999px;background:#eff6ff;transition:background-color .3s ease,color .3s ease}
.timeline-item:hover span{background:var(--primary);color:#fff}
.trust-list span,.benefit-list>div{position:relative}
.trust-list span{transition:transform .25s ease,color .25s ease}
@media(hover:hover) and (pointer:fine){.trust-list span:hover{transform:translateY(-2px);color:var(--primary)}}

/* FAQ rõ trạng thái mở */
.faq-list details{border:1px solid transparent;border-bottom-color:var(--line);border-radius:12px;padding:18px 16px;transition:background-color .3s ease,border-color .3s ease,box-shadow .3s ease}
.faq-list details[open]{background:#f8fbff;border-color:#dbeafe;box-shadow:0 12px 30px rgba(15,23,42,.05)}
.faq-list summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";display:grid;place-items:center;flex:0 0 30px;width:30px;height:30px;border-radius:50%;background:#eff6ff;color:var(--primary);font-size:20px;line-height:1;transition:transform .3s ease,background-color .3s ease,color .3s ease}
.faq-list details[open] summary::after{transform:rotate(45deg);background:var(--primary);color:#fff}

/* Form tương tác tốt hơn */
.lead-form input,.lead-form select,.lead-form textarea,.filter-bar input,.filter-bar select,.search-form input{transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease}
.lead-form input:focus,.lead-form select:focus,.lead-form textarea:focus{transform:translateY(-1px);box-shadow:0 9px 24px rgba(37,99,235,.09)}
.form-card{position:relative;overflow:hidden}
.form-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--sky));transform:scaleX(.15);transform-origin:left;transition:transform .5s cubic-bezier(.22,1,.36,1)}
.form-card:focus-within::before{transform:scaleX(1)}

/* Liên hệ nổi và nút quay lên đầu */
.floating-contact a{position:relative;overflow:visible;transition:transform .25s ease,box-shadow .25s ease}
@media(hover:hover) and (pointer:fine){.floating-contact a:hover{transform:translateX(-6px);box-shadow:0 13px 30px rgba(37,99,235,.3)}}
.floating-contact a:first-child::before{content:"";position:absolute;inset:-4px;border:2px solid rgba(37,99,235,.35);border-radius:999px;animation:dsContactPulse 2.3s ease-out infinite;pointer-events:none}
@keyframes dsContactPulse{0%{opacity:.8;transform:scale(.94)}70%,100%{opacity:0;transform:scale(1.18)}}
.back-to-top{position:fixed;left:18px;bottom:28px;z-index:950;width:44px;height:44px;border:1px solid #dbeafe;border-radius:50%;background:rgba(255,255,255,.95);color:var(--primary);box-shadow:0 12px 32px rgba(15,23,42,.12);display:grid;place-items:center;font-size:20px;font-weight:900;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .25s ease,visibility .25s ease,transform .25s ease,background-color .25s ease,color .25s ease}
.back-to-top.is-visible{opacity:1;visibility:visible;transform:none}
@media(hover:hover) and (pointer:fine){.back-to-top:hover{background:var(--primary);color:#fff;transform:translateY(-3px)}}

/* Cải thiện ảnh logo trong header mà không ép méo tỉ lệ */
.brand img{max-width:180px;object-fit:contain;transition:transform .3s ease,opacity .3s ease}
@media(hover:hover) and (pointer:fine){.brand:hover img{transform:scale(1.025)}}

/* Tối ưu mobile: giảm hiệu ứng nặng */
@media(max-width:640px){.scroll-progress{height:2px}.back-to-top{bottom:76px;left:12px;width:40px;height:40px}.hero::before{width:230px;height:230px}.hero::after{width:200px;height:200px}.site-header.is-scrolled .header-inner{height:62px}.main-nav>a:not(.btn)::after{bottom:1px}.floating-contact a:first-child::before{animation:none}html.js-effects .reveal-item{transform:translate3d(0,20px,0);transition-duration:.55s}.brand img{max-width:145px}}

/* Tôn trọng thiết lập giảm chuyển động của người dùng */
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto!important}*,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}html.js-effects .reveal-item,html.js-effects .hero-copy>*,html.js-effects .device-stage{opacity:1!important;transform:none!important}.scroll-progress{transition:none}.floating-contact a:first-child::before{display:none}}

/* =========================================================