@font-face{font-family:"Plus Jakarta Sans";font-weight:200 800;font-style:normal;font-display:swap;src:url("/assets/89b3fb38aa0d.ttf") format("truetype");}
@font-face{font-family:"Be Vietnam Pro";font-weight:400;font-style:normal;font-display:swap;src:url("/assets/cd1ef6e9d7db.ttf") format("truetype");}
@font-face{font-family:"Be Vietnam Pro";font-weight:500;font-style:normal;font-display:swap;src:url("/assets/b60832bfa0fc.ttf") format("truetype");}
@font-face{font-family:"Be Vietnam Pro";font-weight:600;font-style:normal;font-display:swap;src:url("/assets/bd8e27eb0272.ttf") format("truetype");}
@font-face{font-family:"JetBrains Mono";font-weight:100 800;font-style:normal;font-display:swap;src:url("/assets/48715a42ec24.ttf") format("truetype");}
/* Hệ thiết kế đã chọn: xanh chủ động + hồng tươi, cửa sổ và đường mềm.
   V1 ưu tiên nội dung rõ, cỡ chữ dễ đọc và vùng bấm tối thiểu 44px. */
:root {
  --blue:#3D65D9; --pink:#FF86D2; --ink:#263C63;
  --blue-surface:#EEF3FD; --pink-surface:#FFF0F8; --paper:#FAFBFE;
  --muted:#526584; --line:#D6DFEF;
  --display:"Plus Jakarta Sans",sans-serif;
  --body:"Be Vietnam Pro",sans-serif;
  --mono:"JetBrains Mono",monospace;
}
* { box-sizing:border-box; }
html { scroll-behavior:smooth; scroll-padding-top:110px; }
body { margin:0; background:var(--paper); color:var(--ink); font:400 16px/1.8 var(--body); font-synthesis:none; }
body.dialog-open { overflow:hidden; }
h1,h2,h3,p,figure { margin:0; }
h1,h2,h3 { font-family:var(--display); font-weight:800; letter-spacing:-.035em; text-wrap:balance; }
h1 { line-height:1.2; }
h2 { font-size:clamp(34px,3.6vw,48px); line-height:1.25; }
h3 { font-size:30px; line-height:1.3; }
p { text-wrap:pretty; }
a { color:inherit; text-decoration:none; }
button { font:inherit; cursor:pointer; color:inherit; }
button,a { -webkit-tap-highlight-color:transparent; }
button { border:0; }
img { max-width:100%; width:100%; height:auto; display:block; object-fit:cover; }
svg { display:block; flex:none; }
button:focus-visible,a:focus-visible { outline:3px solid var(--pink); outline-offset:5px; }
button:focus-visible .step-content strong { text-decoration:underline; text-underline-offset:5px; }
.container { width:calc(100% - 96px); max-width:1320px; margin-inline:auto; }
.section { padding-block:100px; }
main section[id] { scroll-margin-top:-70px; }
#ket-noi { scroll-margin-top:0; }
.eyebrow { font:600 12px/1.6 var(--body); text-transform:uppercase; letter-spacing:.09em; }
.blue-text { color:var(--blue); }
.section-heading { display:grid; grid-template-columns:1.25fr 1fr; gap:80px; align-items:end; margin-bottom:48px; }
.section-heading h2 { margin-top:14px; }
.section-heading>p { color:var(--muted); max-width:480px; padding-bottom:5px; }
.skip-link { position:fixed; top:12px; left:12px; z-index:100; padding:12px 20px; border-radius:8px; background:var(--ink); color:white; transform:translateY(-160%); }
.skip-link:focus { transform:none; }
.button { display:inline-flex; align-items:center; justify-content:center; gap:24px; min-height:54px; padding:15px 23px; border:1px solid transparent; border-radius:12px; background:var(--blue); color:white; font-weight:600; font-size:14px; line-height:1.5; transition:background .18s ease,transform .18s ease,box-shadow .18s ease; }
.button svg,.text-link svg { width:19px; height:19px; }
.button:hover { background:var(--ink); transform:translateY(-2px); }
.button-pink { background:var(--pink); color:var(--ink); }
.button-pink:hover { background:var(--paper); color:var(--ink); box-shadow:0 4px 0 #263c6324; }
.text-link { display:inline-flex; align-items:center; gap:10px; min-height:44px; font-size:13px; font-weight:600; }
.text-link:hover { text-decoration:underline; text-underline-offset:5px; }
.wordmark { display:inline-flex; align-items:baseline; font:800 39px/1.1 var(--display); letter-spacing:-.07em; }
.wordmark>span { color:var(--pink); padding-left:2px; }
.site-header { position:sticky; top:0; z-index:40; background:var(--paper); border-bottom:1px solid var(--line); }
.header-inner { display:flex; align-items:center; gap:32px; min-height:88px; }
.main-navigation { margin-left:auto; display:flex; align-items:center; gap:32px; font-size:13px; font-weight:500; }
.main-navigation>a:not(.button) { display:flex; align-items:center; min-height:44px; position:relative; }
.main-navigation>a:not(.button)::after { content:""; position:absolute; bottom:4px; left:0; right:0; height:3px; border-radius:2px; background:var(--blue); transform:scaleX(0); transform-origin:left; transition:transform .18s; }
.main-navigation>a:hover::after,.main-navigation>a[aria-current]::after { transform:scaleX(1); }
.header-contact { min-height:48px; padding:12px 19px; font-size:12px; gap:20px; }
.menu-toggle,.nav-mobile-contact { display:none; }

/* Hero: người học + công cụ + kết quả của sáng tạo. */
.hero { background:var(--blue); color:white; overflow:hidden; }
.hero-grid { display:grid; grid-template-columns:1.04fr 1fr; gap:58px; align-items:stretch; }
.hero-copy { align-self:center; padding-block:70px; }
.hero h1 { font-size:clamp(48px,4.65vw,66px); margin:27px 0 30px; letter-spacing:-.04em; }
.hero-underline { display:inline-block; position:relative; padding-bottom:12px; }
.hero-underline::after { content:""; position:absolute; height:7px; background:var(--pink); border-radius:7px; bottom:0; left:0; width:100%; }
.hero-description { font-size:16px; line-height:1.9; max-width:550px; }
.topic-tags { display:flex; align-items:center; flex-wrap:wrap; gap:8px; list-style:none; padding:0; margin:24px 0 0; font-size:11px; font-weight:500; }
.topic-tags li { border:1px solid #ffffff9c; border-radius:5px; padding:4px 9px; }
.hero-actions { display:flex; align-items:center; flex-wrap:wrap; gap:16px 24px; margin-top:30px; }
.lab { position:relative; isolation:isolate; min-width:0; min-height:620px; background:var(--pink-surface); color:var(--ink); border-radius:85px 0 0 0; margin-right:calc(-1 * max(48px,(100vw - 1320px)/2)); overflow:hidden; background-image:radial-gradient(#263c633b 1px,transparent 1px); background-size:21px 21px; }
.lab::before { content:""; position:absolute; right:0; bottom:92px; width:47%; height:174px; background:var(--pink); border-radius:36px 0 0 14px; z-index:-2; }
.lab>.soft-path { position:absolute; width:110%; height:82%; top:14%; left:-8%; z-index:-1; }
.work-window { background:var(--paper); border:2px solid var(--ink); border-radius:15px; overflow:hidden; box-shadow:5px 6px 0 #263c631f; }
.window-bar { height:36px; display:flex; align-items:center; gap:8px; background:var(--blue-surface); padding:0 13px; color:var(--ink); border-bottom:1px solid #263c6326; font-size:9px; font-weight:600; white-space:nowrap; }
.window-bar>svg { margin-left:auto; width:13px; height:13px; }
.window-bar.dark { background:#203353; color:white; border-color:#ffffff26; }
.window-dots { display:flex; gap:4px; }
.window-dots i { width:5px; height:5px; border-radius:50%; background:var(--blue); }
.dark .window-dots i { background:var(--pink); }
.lab-photo { position:absolute; left:12%; top:64px; width:78%; height:308px; border-color:var(--blue); }
.lab-photo>img { height:calc(100% - 36px); object-position:50% 45%; }
.lab-photo>figcaption { position:absolute; bottom:12px; right:12px; background:var(--ink); color:white; font-size:9px; border-radius:5px; padding:4px 8px; }
.code-window { background:var(--ink); color:white; border:1px solid var(--ink); border-radius:13px; overflow:hidden; box-shadow:5px 6px 0 #263c6320; }
.lab-code { position:absolute; width:51%; left:4%; bottom:104px; transform:rotate(-2deg); z-index:2; }
.code-lines { padding:17px 13px; display:grid; gap:6px; font:400 9px/1.6 var(--mono); }
.code-lines>div { display:flex; gap:12px; white-space:pre; }
.code-lines>div>span { color:#C6D3ED; font-size:8px; }
.code-lines code { font:inherit; letter-spacing:-.3px; }
.code-lines b { color:var(--pink); font-weight:600; }
.code-lines em { color:#BDD3FF; font-style:normal; }
.code-foot { display:flex; align-items:center; gap:8px; padding:9px 13px; background:#203353; font-size:8px; }
.code-foot>span { font:500 12px/1 var(--mono); color:var(--pink); }
.lab-product { position:absolute; right:7%; bottom:105px; width:39%; transform:rotate(2deg); z-index:3; }
.product-thumbnail { display:block; padding:8px 8px 0; }
.product-thumbnail>img { aspect-ratio:4/3; object-fit:contain; border-radius:6px; background:#111; transition:filter .2s; }
.product-thumbnail:hover>img { filter:brightness(1.12); }
.work-window figcaption>strong { display:block; font:800 13px/1.5 var(--display); letter-spacing:-.02em; }
.work-window figcaption>span { display:block; font-size:9px; margin-top:4px; }
.lab-product>figcaption,.digital-product>figcaption { padding:9px 12px 12px; }
.lab-message { position:absolute; bottom:24px; left:8%; right:8%; display:flex; align-items:center; justify-content:center; gap:14px; }
.lab-message>svg { width:32px; height:32px; color:var(--blue); }
.lab-message>p { flex:none; width:max-content; font-size:12px; font-weight:500; line-height:1.65; }
.lab-message strong { display:block; white-space:nowrap; font:800 21px/1.5 var(--display); letter-spacing:-.02em; }
.node-flow { display:flex; align-items:center; font-size:10px; font-weight:600; line-height:1.5; }
.node-flow>span { display:flex; align-items:center; gap:6px; white-space:nowrap; border:1px solid var(--ink); border-radius:6px; background:var(--paper); color:var(--ink); padding:7px 10px; }
.node-flow>span::before { content:""; width:5px; height:5px; border-radius:1px; background:var(--blue); }
.node-flow>span:last-child { background:var(--pink); }
.node-flow>span:last-child::before { background:var(--ink); }
.node-flow>i { position:relative; flex:none; width:22px; height:2px; background:var(--ink); }
.node-flow>i::after { content:""; position:absolute; right:0; top:-2px; border:3px solid transparent; border-right:0; border-left-color:var(--ink); }
.experience-ribbon { background:var(--ink); }
.ribbon-inner { display:flex; justify-content:space-between; align-items:center; gap:32px; min-height:72px; font-size:13px; font-weight:600; }
.ribbon-inner .node-flow { font-size:9px; }
.ribbon-inner .node-flow>span:not(:last-child) { background:transparent; color:white; border-color:#ffffff88; }
.ribbon-inner .node-flow>span::before { background:var(--pink); }
.ribbon-inner .node-flow>i { background:var(--pink); }
.ribbon-inner .node-flow>i::after { border-left-color:var(--pink); }
.mobile-break { display:none; }

/* Niềm tin: khoảng thở và một mảnh ghép nhận diện. */
.belief-grid { display:grid; grid-template-columns:1.05fr 1fr; gap:110px; align-items:start; }
.belief h2 { font-size:clamp(38px,3.9vw,54px); margin-top:20px; }
.belief-copy { padding-top:4px; }
.belief-signature { display:flex; align-items:center; gap:23px; margin-bottom:26px; font:800 20px/1.5 var(--display); letter-spacing:-.03em; }
.soft-tiles { width:104px; height:80px; }
.belief-copy>p { color:var(--muted); }
.belief-copy>p+p { margin-top:16px; }
.belief-copy>.belief-ambition { color:var(--ink); font-weight:500; }
.belief-values { display:grid; grid-template-columns:repeat(3,1fr); gap:30px; border-top:1px solid var(--line); margin-top:52px; padding-top:26px; font:800 19px/1.5 var(--display); letter-spacing:-.02em; }
.belief-values>span { display:flex; align-items:center; gap:12px; }
.belief-values>span::before { content:""; width:13px; height:13px; border-radius:3px; background:var(--blue); }
.belief-values>span:nth-child(2)::before { background:var(--pink); }
.belief-values>span:nth-child(3)::before { background:var(--ink); }

/* Vòng trải nghiệm: các bước hiện đầy đủ; tương tác liên kết sơ đồ và nội dung. */
.growth { background:var(--blue-surface); }
.growth-grid { display:grid; grid-template-columns:1fr 1.06fr; gap:100px; align-items:center; }
.growth-diagram { width:100%; max-width:460px; aspect-ratio:1; position:relative; margin-inline:auto; }
.growth-diagram>svg { width:100%; height:100%; }
.cycle-label { display:flex; justify-content:center; align-items:center; padding:10px 16px; min-width:118px; border:1px solid var(--ink); border-radius:9px; background:var(--paper); font-weight:600; font-size:13px; line-height:1.5; position:absolute; transition:background .2s,color .2s; }
.cycle-label.north { top:12.5%; left:50%; transform:translate(-50%,-50%); }
.cycle-label.east { right:0; top:50%; transform:translateY(-50%); }
.cycle-label.south { bottom:12.5%; left:50%; transform:translate(-50%,50%); }
.cycle-label.west { left:0; top:50%; transform:translateY(-50%); }
.cycle-label.is-active { color:white; background:var(--blue); border-color:var(--blue); }
.cycle-center { position:absolute; inset:31% 24%; display:flex; flex-direction:column; justify-content:center; align-items:center; text-align:center; gap:9px; }
.cycle-center>svg { width:32px; height:32px; color:var(--blue); }
.cycle-center>span { font-size:10px; color:var(--muted); }
.cycle-center>strong { font:800 29px/1.35 var(--display); letter-spacing:-.03em; }
.cycle-center>.cycle-live { font-size:10px; line-height:1.6; min-height:32px; max-width:180px; }
.growth-steps { display:grid; gap:12px; }
.growth-step { display:flex; align-items:start; gap:18px; text-align:left; background:transparent; border:1px solid #263c6330; border-radius:15px; padding:20px 22px; transition:background .18s,border-color .18s; }
.growth-step:hover { background:#FAFBFE; border-color:var(--blue); }
.growth-step.is-active { background:var(--paper); border-color:var(--blue); box-shadow:4px 4px 0 #3d65d91a; }
.step-number { flex:none; width:34px; height:34px; border-radius:8px; display:grid; place-items:center; background:var(--paper); color:var(--blue); font:500 12px/1 var(--mono); }
.growth-step.is-active .step-number { background:var(--pink); color:var(--ink); }
.step-content { display:flex; flex-direction:column; gap:6px; }
.step-content>strong { font:800 21px/1.4 var(--display); letter-spacing:-.02em; }
.step-content>span { color:var(--muted); font-size:13px; line-height:1.8; }
.growth-step>svg { width:18px; height:18px; margin:8px 0 0 auto; color:var(--blue); }
.growth-return { display:flex; align-items:center; justify-content:center; gap:12px; margin-top:40px; font-size:13px; font-weight:600; }
.growth-return>svg { width:23px; height:23px; color:var(--blue); }

/* Đào tạo: AI là mảng lớn, lập trình và sáng tạo số là hai mảng hỗ trợ. */
.activities { background:var(--paper); }
.activities-grid { display:grid; grid-template-columns:1.08fr 1fr; gap:24px; }
.activity-card { min-width:0; overflow:hidden; border-radius:24px; }
.activity-copy { padding:32px; }
.activity-copy>.eyebrow { font-size:11px; }
.activity-copy h3 { margin:12px 0 16px; }
.activity-copy>p:not(.eyebrow) { font-size:15px; line-height:1.85; }
.ai { grid-column:1; grid-row:span 2; display:flex; flex-direction:column; background:var(--blue); color:white; }
.ai-course-visual { flex:none; }
.ai-course-visual>img { aspect-ratio:1.5; }
.ai .activity-copy { flex:1; display:flex; flex-direction:column; justify-content:center; padding:32px 40px 40px; }
.ai .eyebrow { color:var(--pink); }
.ai h3 { font-size:42px; }
.ai .activity-copy>p:not(.eyebrow) { font-size:16px; max-width:410px; }
.programming,.digital { display:grid; grid-template-columns:1.15fr 1fr; align-items:stretch; min-height:310px; }
.programming { background:var(--blue-surface); border:1px solid var(--line); color:var(--ink); }
.digital { background:var(--pink-surface); }
.programming .activity-copy,.digital .activity-copy { display:flex; flex-direction:column; justify-content:center; padding:32px 28px; }
.programming h3,.digital h3 { font-size:30px; }
.programming .activity-copy>p:not(.eyebrow),.digital .activity-copy>p:not(.eyebrow) { color:var(--muted); font-size:14px; }
.course-photo { min-width:0; min-height:0; }
.course-photo>img { width:100%; height:100%; object-fit:cover; }
.programming .course-photo>img { object-position:26% 50%; }
.digital .course-photo>img { object-position:48% 50%; }

/* Cuộc thi: đưa tinh thần thử sức thành một chương riêng. */
.championship { background:var(--ink); color:white; overflow:hidden; }
.championship-grid { display:grid; grid-template-columns:1fr 1fr; align-items:center; gap:100px; }
.championship .eyebrow { color:var(--pink); }
.championship h2 { font-size:clamp(48px,5vw,68px); margin-top:20px; line-height:1.17; }
.championship h2>span { color:var(--pink); }
.championship h3 { font-size:27px; letter-spacing:-.02em; margin:27px 0 18px; }
.championship-copy>p:not(.eyebrow) { font-size:14px; line-height:1.9; max-width:520px; color:#E5ECF9; }
.championship-copy>p+p { margin-top:15px; }
.championship-copy>.button { margin-top:27px; }
.championship-visual { position:relative; isolation:isolate; padding:22px 0 65px; }
.championship-photo { border:2px solid var(--pink); border-radius:22px 22px 6px 22px; overflow:hidden; transform:rotate(2deg); background:var(--paper); color:var(--ink); }
.championship-photo>.window-bar { height:42px; padding-inline:17px; font-size:10px; }
.championship-photo>img { aspect-ratio:1.12; object-position:50% 65%; }
.championship-photo>figcaption { padding:13px 17px 16px; font-size:9px; line-height:1.8; }
.championship-connector { position:absolute; border:9px solid var(--blue); border-radius:75px; width:110%; height:95%; left:-5%; top:-15px; z-index:-1; }
.championship-note { position:absolute; bottom:10px; right:8px; display:block; border-radius:12px; padding:15px 20px; background:var(--pink); color:var(--ink); font:800 19px/1.45 var(--display); letter-spacing:-.02em; transform:rotate(-2deg); }

/* Hồ sơ chuyên môn chờ dữ liệu xác nhận, không thêm số liệu hay thành tích. */
.foundation { padding-bottom:80px; }
.foundation .section-heading { margin-bottom:35px; }
.foundation h2 { font-size:38px; }
.foundation .section-heading>p { font-size:14px; }
.foundation-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:40px; }
.foundation-grid>article { padding-top:25px; border-top:1px solid var(--line); }
.foundation-grid svg { width:36px; height:36px; color:var(--blue); margin-bottom:20px; }
.foundation-grid h3 { font-size:21px; letter-spacing:-.02em; }
.foundation-grid p { font-size:13px; color:var(--muted); margin-top:10px; max-width:335px; }
.pending-tag { display:inline-flex; font-size:10px; color:var(--muted); border:1px solid var(--line); border-radius:5px; padding:4px 8px; margin-top:20px; }

/* Lời mời đồng hành là hành động chính của toàn trang. */
.contact-section { padding-bottom:80px; }
.contact-card { display:grid; grid-template-columns:1fr 1fr; gap:95px; align-items:center; position:relative; isolation:isolate; overflow:hidden; background:var(--blue); color:white; border-radius:32px; padding:65px; }
.contact-route { position:absolute; width:230px; height:300px; right:-170px; top:50px; border:8px solid var(--pink); border-radius:75px; z-index:-1; }
.contact-card h2 { font-size:clamp(40px,4vw,53px); margin-top:18px; }
.contact-card h2>span { display:inline-block; color:var(--pink); background:var(--ink); border-radius:10px; padding:3px 12px 9px; margin-top:5px; }
.contact-copy>p { font-size:15px; line-height:1.9; }
.contact-copy>p+p { margin-top:16px; }
.contact-copy>.button { margin-top:28px; }
.contact-copy>small { display:block; margin-top:15px; font-size:10px; line-height:1.7; }
.site-footer { border-top:1px solid var(--line); padding:58px 0 25px; }
.footer-main { display:grid; grid-template-columns:1.25fr 1fr 1.2fr; gap:65px; padding-bottom:48px; }
.footer-brand .wordmark { font-size:61px; }
.footer-brand>p { font-size:13px; color:var(--muted); margin-top:18px; }
.footer-main>nav { display:flex; flex-direction:column; align-items:start; font-size:13px; gap:5px; }
.footer-main>nav>strong { font:800 15px/1.5 var(--display); letter-spacing:-.02em; margin-bottom:12px; }
.footer-main>nav>a { display:flex; align-items:center; min-height:36px; color:var(--muted); }
.footer-main a:hover { text-decoration:underline; text-underline-offset:4px; }
.footer-bottom { display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px; padding-top:22px; border-top:1px solid var(--line); font-size:10px; color:var(--muted); }
.footer-bottom a { text-decoration:underline; text-underline-offset:3px; }
.back-top { display:flex; align-items:center; gap:9px; min-height:44px; }
.back-top>svg { width:15px; height:15px; }

/* Dialog dùng HTML native: giữ focus, Escape và thông báo trạng thái rõ ràng. */
.info-dialog { border:0; border-radius:23px; color:var(--ink); background:var(--paper); padding:0; width:min(580px,calc(100% - 32px)); max-height:calc(100dvh - 32px); margin:auto; box-shadow:0 24px 90px #14274444; }
.info-dialog::backdrop { background:#162841a6; backdrop-filter:blur(4px); }
.dialog-inner { position:relative; padding:47px; }
.dialog-close { display:grid; place-items:center; width:44px; height:44px; background:var(--blue-surface); border-radius:50%; position:absolute; right:14px; top:14px; }
.dialog-close>svg { width:21px; height:21px; }
.dialog-close:hover { background:var(--pink); }
.dialog-inner h2 { font-size:31px; line-height:1.35; margin:20px 0 17px; }
.dialog-inner>p:not(.eyebrow) { font-size:14px; color:var(--muted); }
.dialog-status { padding:21px; border:1px solid var(--line); border-radius:12px; background:var(--blue-surface); margin:25px 0; font-size:13px; }
.dialog-status>p { color:var(--muted); margin-top:8px; }

@media(min-width:1600px) { .lab { min-height:660px; } }
@media(max-width:1200px) {
  .container { width:calc(100% - 64px); }
  .main-navigation { gap:22px; }
  .header-inner { gap:25px; }
  .header-contact { gap:12px; padding-inline:16px; }
  .hero-grid { gap:35px; }
  .hero h1 { font-size:52px; }
  .hero-copy { padding-block:60px; }
  .hero-description { font-size:15px; }
  .lab { min-height:620px; margin-right:-32px; }
  .lab-photo { left:9%; width:82%; height:277px; }
  .lab-code { width:54%; bottom:122px; left:3%; }
  .code-lines { font-size:8px; padding:14px 9px; }
  .code-lines>div { gap:7px; }
  .lab-product { right:5%; bottom:105px; width:43%; }
  .lab-product>.window-bar { font-size:8px; padding-inline:8px; }
  .lab-product figcaption>strong { font-size:11px; }
  .lab-product figcaption>span { font-size:8px; }
  .belief-grid,.growth-grid,.championship-grid { gap:60px; }
  .section-heading { gap:50px; }
  .activity-copy { padding:26px; }
  .ai h3,.digital h3 { font-size:24px; }
  .contact-card { padding:52px; gap:60px; }
  .contact-route { right:-190px; }
}
@media(max-width:960px) {
  html { scroll-padding-top:95px; }
  .section { padding-block:76px; }
  .header-inner { min-height:76px; }
  .wordmark { font-size:35px; }
  .menu-toggle { display:flex; align-items:center; justify-content:center; gap:8px; min-height:44px; padding:8px 12px; background:transparent; border:1px solid var(--line); border-radius:9px; font-size:12px; margin-left:auto; }
  .menu-toggle svg { width:22px; height:22px; }
  .main-navigation { display:none; position:absolute; top:100%; left:0; right:0; margin:0; padding:20px 32px 27px; flex-direction:column; align-items:stretch; gap:8px; background:var(--paper); border-bottom:1px solid var(--line); box-shadow:0 12px 20px #263c630d; }
  .main-navigation.is-open { display:flex; }
  .main-navigation>a:not(.button) { padding-block:8px; font-size:15px; }
  .main-navigation>a:not(.button)::after { display:none; }
  .main-navigation .nav-mobile-contact { display:inline-flex; margin-top:8px; align-self:start; }
  .hero-grid { grid-template-columns:1fr 1fr; gap:25px; }
  .hero h1 { font-size:43px; margin-top:21px; }
  .hero-copy { padding-block:48px; }
  .hero-description { font-size:14px; }
  .hero-actions { gap:10px; }
  .hero-actions>.button { font-size:12px; padding-inline:16px; gap:18px; }
  .lab { min-height:570px; border-top-left-radius:60px; }
  .lab-photo { top:56px; height:250px; }
  .lab-code { width:70%; bottom:109px; }
  .lab-product { width:44%; bottom:94px; right:4%; }
  .lab-product .window-dots { display:none; }
  .lab-product figcaption>strong { font-size:10px; }
  .lab-product figcaption>span { font-size:7px; }
  .lab-message { bottom:20px; gap:10px; }
  .lab-message>svg { width:26px; height:26px; }
  .lab-message>p { font-size:11px; }
  .lab-message strong { font-size:17px; }
  .code-lines { font-size:7.5px; }
  .lab-code .window-bar { height:30px; font-size:8px; }
  .code-foot { font-size:7px; }
  .belief-grid { gap:48px; }
  .belief h2 { font-size:41px; }
  .belief-copy>p { font-size:14px; }
  .belief-signature { gap:15px; font-size:17px; }
  .belief-values { font-size:16px; gap:20px; }
  .growth-grid { gap:35px; grid-template-columns:1fr 1.12fr; }
  .cycle-label { min-width:97px; font-size:11px; padding:9px 10px; }
  .cycle-center>strong { font-size:23px; }
  .cycle-center { inset:30% 23%; gap:6px; }
  .cycle-center>span { font-size:8px; }
  .cycle-center>.cycle-live { font-size:8px; }
  .growth-step { padding:17px; gap:12px; }
  .step-content>strong { font-size:19px; }
  .step-content>span { font-size:12px; }
  .growth-step>svg { display:none; }
  .activities-grid { grid-template-columns:1fr 1fr; gap:18px; }
  .programming h3 { font-size:32px; }
  .ai { grid-template-columns:1fr; }
  .ai .activity-copy { padding:24px 24px 12px; }
  .ai h3 { font-size:26px; }
  .digital { grid-template-columns:1fr; }
  .digital .activity-copy { padding:24px 24px 12px; }
  .programming .activity-copy { justify-content:start; }
  .championship-grid { gap:45px; }
  .championship h2 { font-size:52px; }
  .championship h3 { font-size:24px; }
  .championship-copy>p:not(.eyebrow) { font-size:13px; }
  .championship-photo>img { aspect-ratio:.8; }
  .championship-photo>.window-bar { font-size:8px; padding-inline:10px; }
  .championship-note { font-size:16px; }
  .foundation-grid { gap:26px; }
  .foundation-grid h3 { font-size:18px; }
  .contact-card { padding:40px; gap:40px; }
  .contact-route { right:-198px; }
  .contact-card h2 { font-size:40px; }
  .contact-copy>p { font-size:13px; }
  .footer-main { gap:35px; }
}
@media(max-width:700px) {
  .container { width:calc(100% - 40px); }
  .section { padding-block:60px; }
  main section[id] { scroll-margin-top:-40px; }
  .header-inner { min-height:70px; gap:16px; }
  .header-contact { display:none; }
  .wordmark { font-size:32px; }
  .main-navigation { padding-inline:20px; }
  .hero-grid { grid-template-columns:1fr; gap:0; }
  .hero-copy { padding:43px 0 38px; }
  .hero h1 { font-size:clamp(40px,7.6vw,54px); margin:20px 0 23px; }
  .hero-description { font-size:15px; max-width:550px; }
  .hero-actions { gap:12px 22px; margin-top:25px; }
  .hero-actions>.button { font-size:13px; padding-inline:20px; }
  .topic-tags { font-size:10px; margin-top:20px; }
  .lab { width:calc(100% + 40px); margin:0 -20px; min-height:515px; border-radius:55px 0 0 0; }
  .lab-photo { top:44px; left:13%; width:79%; height:270px; }
  .lab-code { width:52%; left:4%; bottom:104px; }
  .lab-code .window-bar { height:32px; font-size:8px; }
  .code-lines { font-size:8.5px; padding:14px 10px; gap:5px; }
  .code-lines>div { gap:8px; }
  .code-foot { font-size:7px; padding-inline:10px; }
  .lab-product { width:38%; right:6%; bottom:94px; }
  .lab-product>.window-bar { height:30px; font-size:8px; }
  .lab-product .window-dots { display:flex; gap:3px; }
  .lab-product figcaption>strong { font-size:11px; }
  .lab-product figcaption>span { font-size:8px; }
  .lab-message { bottom:24px; }
  .lab-message strong { font-size:20px; }
  .ribbon-inner { min-height:75px; font-size:12px; padding-block:17px; gap:14px; }
  .ribbon-inner .node-flow { font-size:8px; }
  .ribbon-inner .node-flow>span { padding:5px 7px; gap:4px; }
  .ribbon-inner .node-flow>i { width:10px; }
  .belief-grid { grid-template-columns:1fr; gap:30px; }
  .belief h2 { font-size:39px; margin-top:14px; }
  .belief-signature { font-size:18px; gap:20px; margin-bottom:23px; }
  .belief-copy>p { font-size:15px; }
  .belief-values { grid-template-columns:1fr; gap:17px; margin-top:30px; padding-top:24px; font-size:17px; }
  .section-heading { grid-template-columns:1fr; gap:20px; margin-bottom:30px; }
  h2 { font-size:35px; }
  .section-heading>p { font-size:15px; max-width:100%; padding:0; }
  .growth-grid { grid-template-columns:1fr; gap:30px; }
  .growth-diagram { max-width:400px; }
  .cycle-label { min-width:106px; font-size:12px; }
  .cycle-center { inset:31% 23%; gap:8px; }
  .cycle-center>span,.cycle-center>.cycle-live { font-size:9px; }
  .cycle-center>strong { font-size:25px; }
  .growth-step { padding:19px 17px; gap:15px; }
  .growth-step>svg { display:block; }
  .step-content>strong { font-size:20px; }
  .step-content>span { font-size:13px; }
  .growth-return { margin-top:26px; font-size:12px; }
  .activities-grid { grid-template-columns:1fr; gap:19px; }
  .programming { grid-row:auto; }
  .programming>.window-bar { font-size:9px; }
  .activity-copy { padding:27px; }
  .programming h3 { font-size:33px; }
  .activity-copy>p:not(.eyebrow) { font-size:14px; }
  .ai { grid-template-columns:1fr 1fr; }
  .ai .activity-copy { padding:27px 8px 27px 27px; }
  .ai h3 { font-size:24px; }
  .digital { grid-template-columns:1.1fr 1fr; }
  .digital .activity-copy { padding:27px 8px 27px 27px; }
  .digital h3 { font-size:24px; }
  .digital .text-link { font-size:10px; }
  .championship-grid { grid-template-columns:1fr; gap:40px; }
  .championship h2 { font-size:54px; }
  .championship h3 { font-size:26px; }
  .championship-copy>p:not(.eyebrow) { font-size:14px; }
  .championship-visual { width:calc(100% - 16px); max-width:480px; margin-inline:auto; }
  .championship-photo>img { aspect-ratio:1.1; }
  .championship-photo>.window-bar { font-size:9px; height:36px; }
  .championship-note { font-size:17px; right:0; }
  .foundation h2 { font-size:31px; }
  .foundation .section-heading>p { font-size:14px; }
  .foundation-grid { grid-template-columns:1fr; gap:27px; }
  .foundation-grid>article { display:grid; grid-template-columns:38px 1fr; gap:0 19px; padding-top:24px; }
  .foundation-grid>article>svg { grid-row:span 3; width:31px; height:31px; margin-top:3px; }
  .foundation-grid h3 { font-size:20px; }
  .foundation-grid p { font-size:13px; margin-top:8px; max-width:none; }
  .pending-tag { justify-self:start; margin-top:13px; }
  .contact-section { padding-bottom:60px; }
  .contact-card { grid-template-columns:1fr; padding:35px 27px; gap:26px; border-radius:22px; }
  .contact-card h2 { font-size:42px; }
  .contact-copy>p { font-size:14px; }
  .contact-copy>.button { margin-top:24px; }
  .contact-route { width:170px; height:260px; right:-150px; top:75px; border-radius:70px; }
  .site-footer { padding-top:40px; }
  .footer-main { grid-template-columns:1fr 1fr; gap:32px 25px; padding-bottom:31px; }
  .footer-brand { grid-column:1/-1; }
  .footer-brand .wordmark { font-size:51px; }
  .footer-brand>p { margin-top:14px; }
  .footer-main>nav { font-size:12px; gap:3px; }
  .footer-main>nav>strong { font-size:13px; margin-bottom:7px; }
  .footer-main>nav>a { min-height:44px; line-height:1.7; }
  .footer-bottom { align-items:start; flex-direction:column; gap:8px; line-height:1.8; font-size:9px; }
  .dialog-inner { padding:42px 26px 28px; }
  .dialog-inner h2 { font-size:28px; }
  .dialog-inner .eyebrow { font-size:10px; }
}
@media(max-width:420px) {
  .hero h1 { font-size:clamp(35px,10.4vw,43px); }
  .hero .eyebrow { font-size:10px; }
  .hero-actions { align-items:start; flex-direction:column; gap:8px; }
  .lab { min-height:460px; }
  .lab-photo { top:40px; height:235px; }
  .lab-photo>.window-bar { height:31px; font-size:8px; padding-inline:10px; }
  .lab-photo>img { height:calc(100% - 31px); }
  .lab-photo>figcaption { font-size:7px; padding:4px 6px; }
  .lab-code { width:57%; bottom:90px; }
  .lab-code>.window-bar { height:29px; padding-inline:9px; font-size:7px; }
  .lab-code .window-dots { gap:3px; }
  .lab-code .window-dots i { width:4px; height:4px; }
  .code-lines { font-size:8.5px; padding:12px 8px; gap:4px; }
  .code-lines>div { gap:7px; }
  .code-lines>div>span { font-size:7.5px; }
  .code-foot { font-size:7.5px; padding:8px; gap:5px; }
  .code-foot>span { font-size:10px; }
  .lab-product { right:4%; width:38%; bottom:87px; }
  .lab-product>.window-bar { font-size:7px; height:28px; padding-inline:7px; gap:5px; }
  .lab-product .window-dots { display:none; }
  .lab-product>.product-thumbnail { padding:6px 6px 0; }
  .lab-product>figcaption { padding:7px 8px 9px; }
  .lab-product figcaption>strong { font-size:10px; }
  .lab-product figcaption>span { font-size:7px; }
  .lab::before { height:134px; bottom:87px; }
  .lab-message { bottom:21px; }
  .lab-message strong { font-size:19px; }
  .ribbon-inner { align-items:start; flex-direction:column; gap:15px; padding-block:21px; }
  .ribbon-inner>p { font-size:12px; }
  .mobile-break { display:none; }
  .ribbon-inner .node-flow { font-size:9px; }
  .belief h2 { font-size:35px; }
  h2 { font-size:32px; }
  .cycle-label { min-width:94px; font-size:10px; padding:8px 10px; }
  .cycle-center>strong { font-size:22px; }
  .cycle-center>svg { width:26px; height:26px; }
  .cycle-center>span,.cycle-center>.cycle-live { font-size:8px; }
  .growth-step>svg { display:none; }
  .step-number { width:30px; height:30px; font-size:11px; }
  .growth-step { gap:12px; padding:17px 15px; }
  .ai { grid-template-columns:1fr; }
  .ai .activity-copy { padding:27px 27px 15px; }
  .ai h3,.digital h3 { font-size:28px; }
  .ai .activity-copy>p:not(.eyebrow),.digital .activity-copy>p:not(.eyebrow) { font-size:14px; }
  .digital { grid-template-columns:1fr; }
  .digital .activity-copy { padding:27px 27px 8px; }
  .digital .text-link { font-size:12px; margin-top:13px; }
  .contact-card { padding:32px 25px; }
  .contact-card h2 { font-size:36px; }
  .contact-copy>.button { font-size:12px; padding-inline:17px; gap:18px; }
}
/* Bản V4: lộ trình được ưu tiên, ảnh thật và minh họa có phân cấp rõ ràng. */
.lab-photo>img { object-position:50% 32%; }
.lab-product { width:35%; right:4%; }
.lab-product .product-thumbnail>img { aspect-ratio:4/3; object-fit:cover; background:transparent; }
.ribbon-inner>p { font:800 17px/1.6 var(--display); letter-spacing:-.015em; }
.ribbon-inner>a { display:flex; align-items:center; gap:14px; color:var(--pink); min-height:44px; font-size:12px; }
.ribbon-inner>a>svg { width:21px; height:21px; transform:rotate(90deg); }
.ribbon-inner>a:hover { text-decoration:underline; text-underline-offset:5px; }
.growth .section-heading { margin-bottom:36px; gap:70px; }
.growth .section-heading h2 { margin-top:0; }
.growth .section-heading>p { font-size:15px; max-width:520px; }
.growth-grid { grid-template-columns:1fr 1.12fr; gap:75px; }
.cycle-center>strong { font-size:30px; }
.cycle-center>span { font-size:11px; }
.championship-grid { grid-template-columns:.85fr 1.35fr; gap:70px; }
.championship h2 { font-size:clamp(40px,4.2vw,58px); margin-bottom:25px; }
.championship-copy>p:not(.eyebrow) { font-size:15px; }
.championship-visual { padding-top:16px; padding-bottom:62px; }
.championship-photo { transform:none; border-radius:24px; }
.championship-photo>img { aspect-ratio:auto; height:auto; object-fit:contain; }
.championship-connector { width:104%; height:92%; left:-2%; top:0; border-radius:45px; }
.championship-note { right:20px; bottom:10px; }
@media(max-width:1200px) {
  .activities-grid { gap:20px; }
  .ai .activity-copy { padding:28px 32px 34px; }
  .ai h3 { font-size:36px; }
  .programming,.digital { min-height:290px; }
  .programming .activity-copy,.digital .activity-copy { padding:25px 22px; }
  .programming h3,.digital h3 { font-size:27px; }
  .championship-grid { gap:45px; }
  .championship h2 { font-size:46px; }
}
@media(max-width:1000px) {
  .activities-grid { grid-template-columns:1fr 1fr; }
  .ai { grid-column:1/-1; grid-row:auto; display:grid; grid-template-columns:1fr 1fr; align-items:center; }
  .ai-course-visual>img { aspect-ratio:1.2; object-fit:cover; }
  .ai .activity-copy { padding:28px; }
  .ai h3 { font-size:34px; }
  .ai .activity-copy>p:not(.eyebrow) { font-size:15px; }
  .programming,.digital { display:flex; flex-direction:column; min-height:0; }
  .programming .activity-copy,.digital .activity-copy { padding:27px; flex:1; }
  .programming h3,.digital h3 { font-size:29px; }
  .course-photo { height:245px; }
  .course-photo>img { height:100%; aspect-ratio:auto; }
  .growth .section-heading { gap:40px; }
  .growth .section-heading>p { font-size:14px; }
  .growth-grid { gap:40px; }
  .cycle-center>strong { font-size:25px; }
  .cycle-center>span { font-size:9px; }
  .championship-grid { grid-template-columns:.9fr 1.1fr; gap:35px; }
  .championship h2 { font-size:40px; }
  .championship-copy>p:not(.eyebrow) { font-size:14px; }
}
@media(max-width:700px) {
  .ribbon-inner { align-items:start; flex-direction:column; gap:5px; padding-block:20px; }
  .ribbon-inner>p { font-size:16px; }
  .ribbon-inner>a { font-size:12px; }
  .growth .section-heading { gap:20px; margin-bottom:26px; }
  .growth .section-heading>p { font-size:15px; }
  .growth-grid { grid-template-columns:1fr; gap:28px; }
  .cycle-center>strong { font-size:28px; }
  .cycle-center>span { font-size:10px; }
  .activities-grid { grid-template-columns:1fr; gap:20px; }
  .ai { display:flex; flex-direction:column; grid-column:auto; }
  .ai-course-visual>img { aspect-ratio:1.5; }
  .ai .activity-copy { padding:28px; }
  .ai h3 { font-size:35px; }
  .programming,.digital { display:grid; grid-template-columns:1.1fr 1fr; min-height:260px; }
  .programming .activity-copy,.digital .activity-copy { padding:28px 23px; }
  .programming h3,.digital h3 { font-size:28px; }
  .course-photo { height:100%; }
  .championship-grid { grid-template-columns:1fr; gap:32px; }
  .championship h2 { font-size:clamp(35px,7.8vw,52px); }
  .championship-visual { width:100%; max-width:none; }
  .championship-note { font-size:16px; right:12px; }
}
@media(max-width:520px) {
  .programming,.digital { display:flex; flex-direction:column; }
  .programming .activity-copy,.digital .activity-copy { padding:27px; }
  .course-photo { height:225px; }
  .programming .course-photo>img { object-position:50% 45%; }
  .digital .course-photo>img { object-position:50% 50%; }
  .ai .activity-copy { padding:27px; }
  .ai h3 { font-size:32px; }
  .cycle-center>strong { font-size:24px; }
  .cycle-center>span { font-size:9px; }
}
/* Về Zenius: câu chuyện thương hiệu; các mốc nằm trong đoạn văn. */
.about-section { background:var(--paper); padding-block:90px 85px; }
.about-grid { display:grid; grid-template-columns:1fr 1fr; gap:75px; align-items:center; }
.about-intro>.eyebrow { color:var(--blue); }
.about-intro h2 { font-size:clamp(32px,3vw,42px); line-height:1.3; margin-top:14px; letter-spacing:-.03em; }
.about-photo { margin-top:30px; }
.about-photo>img { aspect-ratio:2.2; object-fit:cover; object-position:50% 86%; border-radius:20px; }
.about-copy { color:var(--muted); font-size:15px; line-height:1.9; }
.about-copy strong { color:var(--ink); font-weight:600; }
.about-copy>p+p { margin-top:22px; }
@media(max-width:1200px) {
  .about-grid { gap:45px; }
  .about-intro h2 { font-size:36px; }
  .about-copy { font-size:14px; }
}
@media(max-width:960px) {
  .about-grid { gap:34px; }
  .about-intro h2 { font-size:32px; }
}
@media(max-width:700px) {
  .about-section { padding-block:60px; }
  .about-grid { grid-template-columns:1fr; gap:30px; }
  .about-intro h2 { font-size:clamp(29px,6.4vw,36px); }
  .about-photo { margin-top:24px; }
  .about-photo>img { border-radius:16px; }
  .about-copy { font-size:15px; }
  .about-copy>p+p { margin-top:20px; }
}
@media(prefers-reduced-motion:reduce) {
  html { scroll-behavior:auto; }
  *,*::before,*::after { transition:none !important; animation:none !important; }
}
@media print {
  .site-header { position:static; }
  .menu-toggle,.info-dialog { display:none; }
  .section { padding-block:35px; }
  .hero-grid,.championship-grid,.contact-card { break-inside:avoid; }
  body { print-color-adjust:exact; -webkit-print-color-adjust:exact; }
}