/* =========================================================
   UniBridge English — Landing page
   Đổi màu / font toàn trang: chỉnh các biến trong :root
   ========================================================= */
:root{
  --ink:#14253D;          /* chữ chính, nền tối */
  --ink-2:#1E3554;
  --primary:#1A587C;      /* xanh thương hiệu */
  --blue:#2BA8D8;
  --teal:#40AFA4;
  --amber:#E89A28;        /* màu nhấn, nút CTA */
  --paper:#FBF8F2;        /* nền kem */
  --surface:#FFFFFF;
  --body:#4A586C;
  --line:#E6E0D4;
  --rainbow:linear-gradient(90deg,#E8453C,#F39A2B,#F2C94C,#4CB87A,#2BA8D8,#6A4BC4);
  --radius:18px;
  --shadow:0 24px 60px -24px rgba(20,37,61,.28);
  --font:'Be Vietnam Pro',system-ui,sans-serif;
  --serif:'Playfair Display',Georgia,serif;
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(43,168,216,.55);outline-offset:3px;border-radius:6px}
h1,h2,h3{margin:0;font-weight:800;letter-spacing:-.035em;line-height:1.12;text-wrap:balance}
h2{font-size:clamp(30px,4vw,46px)}
em{font-family:var(--serif);font-style:italic;font-weight:500;letter-spacing:-.01em;color:var(--primary)}
.section{max-width:var(--max);margin:0 auto;padding:110px 28px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--primary)}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--rainbow);border-radius:2px}
.eyebrow-light{color:#9FD6EA}
.eyebrow-dot{display:none}

/* ---------- Buttons ---------- */
.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:54px;padding:0 26px;border-radius:999px;font-weight:700;font-size:15px;border:1.5px solid transparent;cursor:pointer;transition:transform .2s,background .2s,box-shadow .2s,border-color .2s}
.button span{transition:transform .2s}
.button:hover span{transform:translateX(4px)}
.button-primary{background:var(--ink);color:#fff;box-shadow:0 14px 30px -14px rgba(20,37,61,.7)}
.button-primary:hover{background:var(--primary);transform:translateY(-2px)}
.button-amber{background:var(--amber);color:var(--ink)}
.button-amber:hover{background:#F5AE45}
.button-ghost{border-color:rgba(20,37,61,.18);color:var(--ink)}
.button-ghost:hover{border-color:var(--ink);background:#fff}
.button-outline{border-color:rgba(255,255,255,.35);color:#fff}
.button-outline:hover{border-color:#fff;background:rgba(255,255,255,.08)}

/* ---------- Header ---------- */
.header{position:sticky;top:0;z-index:50;background:rgba(251,248,242,.82);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s}
.header.is-scrolled{border-color:var(--line);box-shadow:0 10px 30px -20px rgba(20,37,61,.35)}
.header-inner{max-width:var(--max);height:76px;margin:auto;padding:0 28px;display:flex;align-items:center;gap:40px}
.brand{display:flex;align-items:center;gap:11px}
.brand img{width:26px;height:auto}
.brand-type{display:flex;flex-direction:column;line-height:1}
.brand-type b{font-size:19px;font-weight:800;letter-spacing:-.03em}
.brand-type small{font-size:9.5px;font-weight:700;letter-spacing:.42em;color:#7A8697;margin-top:4px}
.nav{display:flex;gap:30px;margin-left:auto}
.nav a{font-size:14px;font-weight:600;color:var(--body);position:relative;padding:6px 0;transition:color .2s}
.nav a:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--rainbow);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.nav a:hover{color:var(--ink)}
.nav a:hover:after{transform:scaleX(1)}
.nav .nav-cta{display:none}
.header-cta{display:inline-flex;align-items:center;gap:10px;height:44px;padding:0 20px;border-radius:999px;background:var(--ink);color:#fff;font-size:14px;font-weight:700;transition:background .2s}
.header-cta:hover{background:var(--primary)}
.header-cta span{color:var(--amber)}
.menu{display:none;width:44px;height:44px;border:0;background:transparent;cursor:pointer;position:relative;margin-left:auto}
.menu span{position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:var(--ink);transition:transform .3s,opacity .2s}
.menu span:nth-child(1){top:15px}.menu span:nth-child(2){top:21px}.menu span:nth-child(3){top:27px}
.menu[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding-bottom:40px}
.hero:before{content:"";position:absolute;inset:auto -20% -30% auto;width:780px;height:780px;border-radius:50%;background:radial-gradient(closest-side,rgba(43,168,216,.14),transparent 70%);pointer-events:none}
.hero:after{content:"";position:absolute;inset:-10% auto auto -15%;width:600px;height:600px;border-radius:50%;background:radial-gradient(closest-side,rgba(232,154,40,.12),transparent 70%);pointer-events:none}
.hero-inner{position:relative;z-index:1;max-width:var(--max);margin:auto;padding:70px 28px 60px;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(42px,6vw,76px);margin:26px 0 24px;letter-spacing:-.05em;line-height:1.04}
.hero h1 em{display:block;color:var(--primary);position:relative;width:fit-content}
.hero h1 em:after{content:"";position:absolute;left:2%;right:0;bottom:.06em;height:.12em;background:var(--rainbow);opacity:.55;border-radius:4px;z-index:-1;transform-origin:left;animation:draw 1s .9s both cubic-bezier(.2,.8,.2,1)}
.hero-description{max-width:480px;margin:0;color:var(--body);font-size:17.5px;line-height:1.75}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.hero-assurance{display:flex;gap:14px;align-items:center;margin-top:38px;padding-top:26px;border-top:1px dashed var(--line);max-width:480px}
.assurance-icon{width:46px;height:46px;flex:none;border-radius:14px;background:#fff;display:grid;place-items:center;box-shadow:0 8px 20px -10px rgba(20,37,61,.3)}
.assurance-icon svg{width:24px;fill:none;stroke:var(--teal);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.hero-assurance b{display:block;font-size:15px}
.hero-assurance small{color:var(--body);font-size:13px}

.hero-visual{position:relative;padding:60px 10px 30px}
.bridge-arc{position:absolute;left:-4%;right:-4%;top:0;width:108%;height:auto;z-index:0;overflow:visible}
.bridge-arc path{stroke-dasharray:820;stroke-dashoffset:820;animation:arc 1.8s .5s forwards cubic-bezier(.6,.1,.2,1)}
.photo-frame{position:relative;z-index:1;border-radius:260px 260px var(--radius) var(--radius);overflow:hidden;aspect-ratio:4/4.3;box-shadow:var(--shadow);background:#dfe9ee}
.photo-frame img{width:100%;height:100%;object-fit:cover;object-position:66% 30%;transform:scale(1.03);transition:transform 1.2s}
.hero-visual:hover .photo-frame img{transform:scale(1.07)}
.photo-frame:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(20,37,61,.78))}
.photo-caption{position:absolute;z-index:2;left:22px;right:22px;bottom:22px;display:flex;gap:12px;align-items:center;color:#fff}
.caption-mark{width:42px;height:42px;flex:none;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:800;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);backdrop-filter:blur(6px)}
.photo-caption b{display:block;font-size:15px}
.photo-caption small{font-size:12.5px;opacity:.82}
.floating-stat{position:absolute;z-index:3;left:-22px;top:46%;display:flex;gap:12px;align-items:center;padding:14px 18px 14px 14px;background:#fff;border-radius:16px;box-shadow:var(--shadow);animation:float 6s ease-in-out infinite}
.stat-number{font-size:34px;font-weight:800;letter-spacing:-.05em;line-height:1;background:var(--rainbow);-webkit-background-clip:text;background-clip:text;color:transparent}
.floating-stat b{display:block;font-size:14px}
.floating-stat small{font-size:12px;color:var(--body)}
.visual-tag{position:absolute;z-index:3;right:0;top:70px;display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border-radius:999px;background:var(--ink);color:#fff;font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;animation:float 6s 1.5s ease-in-out infinite}
.live-dot{width:8px;height:8px;border-radius:50%;background:#4CB87A;box-shadow:0 0 0 0 rgba(76,184,122,.6);animation:pulse 2s infinite}

/* Facts strip */
.facts{position:relative;z-index:2;max-width:calc(var(--max) - 56px);margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 20px 50px -30px rgba(20,37,61,.3)}
.fact{display:flex;gap:14px;padding:26px 24px;align-items:flex-start}
.fact+.fact{border-left:1px solid var(--line)}
.fact-symbol{font-size:12px;font-weight:800;color:var(--amber);padding-top:3px;font-variant-numeric:tabular-nums}
.fact b{display:block;font-size:15.5px}
.fact small{font-size:13px;color:var(--body)}

/* ---------- Lead form ---------- */
.lead-section{background:var(--ink);color:#fff;margin-top:100px;position:relative;overflow:hidden}
.lead-section:before{content:"";position:absolute;inset:0;background:radial-gradient(600px 400px at 0% 0%,rgba(43,168,216,.22),transparent 70%),radial-gradient(500px 400px at 100% 100%,rgba(106,75,196,.2),transparent 70%)}
.lead-section:after{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--rainbow)}
.lead-inner{position:relative;max-width:var(--max);margin:auto;padding:100px 28px;display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center}
.lead-intro h2{margin:20px 0 18px;font-size:clamp(34px,4.6vw,54px)}
.lead-intro h2 em{color:#9FD6EA}
.lead-intro p{color:rgba(255,255,255,.72);max-width:420px;margin:0}
.lead-steps{list-style:none;padding:0;margin:32px 0;display:grid;gap:12px}
.lead-steps li{display:flex;gap:14px;align-items:center;font-weight:600;font-size:15px}
.lead-steps span{width:30px;height:30px;border-radius:50%;border:1px solid rgba(255,255,255,.3);display:grid;place-items:center;font-size:13px;color:var(--amber)}
.lead-private{display:flex;gap:10px;align-items:center;font-size:13px;color:rgba(255,255,255,.6)}
.lead-private svg{width:18px;fill:none;stroke:currentColor;stroke-width:1.8}
.lead-form{background:#fff;color:var(--ink);border-radius:24px;padding:36px;box-shadow:0 40px 80px -30px rgba(0,0,0,.5)}
.form-head{margin-bottom:24px}
.form-head b{display:block;font-size:22px;letter-spacing:-.02em}
.form-head small{color:var(--body);font-size:13.5px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-grid label{display:flex;flex-direction:column;gap:8px;font-size:13px;font-weight:700}
.form-grid input,.form-grid select{height:52px;padding:0 16px;border:1.5px solid var(--line);border-radius:12px;background:var(--paper);font-size:15px;font-weight:500;outline:none;transition:border-color .2s,background .2s,box-shadow .2s;appearance:none;-webkit-appearance:none}
.form-grid select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314253D' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:40px}
.form-grid input:focus,.form-grid select:focus{border-color:var(--blue);background-color:#fff;box-shadow:0 0 0 4px rgba(43,168,216,.15)}
.form-grid input:user-invalid,.form-grid select:user-invalid{border-color:#D9534F}
.consent{display:flex;gap:10px;align-items:flex-start;margin:22px 0;font-size:14px;color:var(--body);cursor:pointer}
.consent input{width:18px;height:18px;margin:2px 0 0;accent-color:var(--primary)}
.trap{position:absolute;left:-9999px;opacity:0;height:0;width:0}
.button-submit{width:100%;background:var(--amber);color:var(--ink);font-size:16px}
.button-submit:hover{background:#F5AE45;transform:translateY(-2px)}
.button-submit:disabled{opacity:.65;cursor:progress;transform:none}
#form-status{margin-top:14px;font-size:14px;font-weight:600;color:var(--primary);min-height:1px}
#form-status:empty{margin:0}

/* ---------- Section heading ---------- */
.section-heading{display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:end;margin-bottom:56px}
.section-heading h2{margin-top:18px}
.section-heading h2 em{display:block}
.section-heading p{margin:0;color:var(--body)}
.level-summary{display:block;margin-top:14px;font-size:13px;font-weight:700;color:var(--ink)}

/* ---------- Courses ---------- */
.course-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.course-card{position:relative;padding:40px;border-radius:24px;background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s;overflow:hidden}
.course-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.course-oxford{background:var(--ink);color:#fff;border-color:var(--ink)}
.course-oxford:before{content:"";position:absolute;width:420px;height:420px;right:-160px;top:-160px;border-radius:50%;border:2px solid transparent;background:var(--rainbow) border-box;-webkit-mask:linear-gradient(#000 0 0) padding-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:.5}
.course-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:46px}
.course-index{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--amber)}
.course-orbit svg{width:44px;fill:none;stroke:currentColor;stroke-width:1.4;opacity:.45;transition:transform 1.2s}
.course-card:hover .course-orbit svg{transform:rotate(90deg)}
.course-card h3{font-size:clamp(26px,3vw,34px);margin-bottom:14px;max-width:360px}
.course-card p{margin:0 0 30px;color:var(--body);max-width:420px}
.course-oxford p{color:rgba(255,255,255,.7)}
.course-details{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:34px}
.course-details span{padding:8px 14px;border-radius:999px;background:var(--paper);font-size:13.5px;color:var(--body)}
.course-details b{color:var(--ink);font-weight:800}
.course-oxford .course-details span{background:rgba(255,255,255,.08);color:rgba(255,255,255,.75)}
.course-oxford .course-details b{color:#fff}
.course-bottom{margin-top:auto;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:flex-end;gap:16px}
.course-oxford .course-bottom{border-color:rgba(255,255,255,.14)}
.course-bottom small{display:block;font-size:12.5px;color:var(--body)}
.course-oxford .course-bottom small{color:rgba(255,255,255,.6)}
.course-bottom strong{font-size:26px;font-weight:800;letter-spacing:-.03em}
.course-bottom strong small{display:inline;font-size:16px}
.course-bottom a{display:inline-flex;gap:8px;align-items:center;height:44px;padding:0 20px;border-radius:999px;background:var(--ink);color:#fff;font-size:14px;font-weight:700;transition:background .2s}
.course-bottom a:hover{background:var(--primary)}
.course-oxford .course-bottom a{background:var(--amber);color:var(--ink)}
.placement-note,.exam-note{margin-top:24px;display:flex;gap:16px;align-items:center;padding:20px 24px;border-radius:16px;border:1px dashed #CFC6B5;background:rgba(255,255,255,.5)}
.placement-note p,.exam-note p{margin:0;font-size:14.5px;color:var(--body);flex:1}
.placement-note b,.exam-note b{color:var(--ink)}
.note-icon{width:30px;height:30px;flex:none;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-family:var(--serif);font-style:italic;font-weight:600}
.placement-label{font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);white-space:nowrap}

/* ---------- Life Vision ---------- */
.life-vision{background:#fff;border-block:1px solid var(--line)}
.level-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:lv}
.level-card{position:relative;padding:30px 28px 26px;border-radius:20px;background:var(--paper);border:1px solid var(--line);display:flex;flex-direction:column;transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s,border-color .35s;overflow:hidden}
.level-card:before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:var(--c)}
.level-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.level-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}
.level-order{font-size:44px;font-weight:800;letter-spacing:-.06em;line-height:1;color:var(--c)}
.level-cefr{padding:6px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:12.5px;font-weight:800}
.level-card h3{font-size:22px;margin-bottom:10px}
.level-card p{margin:0 0 22px;font-size:14.5px;color:var(--body)}
.level-result{margin-top:auto;padding:14px 16px;border-radius:12px;background:#fff}
.level-result small{display:block;font-size:10.5px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--c);filter:brightness(.85)}
.level-result b{font-size:15px}
.level-meta{display:flex;flex-direction:column;gap:2px;margin-top:14px;font-size:12.5px;color:var(--body)}
.level-meta span:last-child{font-weight:700;color:var(--ink)}
.takeaway{margin-top:70px;display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:start}
.takeaway-heading h3{font-size:clamp(26px,3vw,34px);margin-top:16px}
.takeaway-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px 36px}
.takeaway-item{display:flex;gap:14px}
.takeaway-no{font-size:12px;font-weight:800;color:var(--amber);padding-top:3px}
.takeaway-item b{display:block;font-size:16px;margin-bottom:4px}
.takeaway-item small{font-size:14px;color:var(--body);line-height:1.6}

/* ---------- Learning ---------- */
.learning{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.learning-copy h2{margin:18px 0}
.learning-copy h2 em{display:block}
.learning-copy>p{color:var(--body);margin:0 0 32px;max-width:480px}
.learning-list{display:grid;gap:20px}
.learning-list>div{display:flex;gap:14px}
.check-icon{width:28px;height:28px;flex:none;border-radius:50%;background:rgba(64,175,164,.15);color:var(--teal);display:grid;place-items:center;font-weight:800;font-size:14px}
.learning-list b{display:block;font-size:16px}
.learning-list small{color:var(--body);font-size:14px}
.learning-process{position:relative;padding:34px;border-radius:28px;background:var(--ink);color:#fff;box-shadow:var(--shadow);overflow:hidden}
.learning-process:before{content:"";position:absolute;inset:0;background:radial-gradient(400px 300px at 100% 0,rgba(43,168,216,.25),transparent 70%)}
.learning-process>*{position:relative}
.process-kicker,.process-caption{font-size:11px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:#9FD6EA}
.process-flow{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:center;margin:22px 0}
.process-step{padding:20px;border-radius:16px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1)}
.process-step span{font-size:12px;font-weight:800;color:var(--amber)}
.process-step b{display:block;margin:8px 0 2px;font-size:15.5px}
.process-step small{font-size:13px;color:rgba(255,255,255,.65)}
.process-connector{color:var(--amber);font-size:22px}
.process-report{padding:22px;border-radius:18px;background:#fff;color:var(--ink)}
.process-report-head{display:flex;gap:12px;align-items:center}
.report-avatar{width:42px;height:42px;flex:none;border-radius:12px;background:var(--rainbow);color:#fff;display:grid;place-items:center;font-weight:800;font-size:13px}
.process-report-head b{display:block;font-size:15px}
.process-report-head small{font-size:13px;color:var(--body)}
.report-check{margin-left:auto;width:32px;height:32px;border-radius:50%;background:var(--paper);display:grid;place-items:center;color:var(--primary)}
.report-fields{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 14px}
.report-fields span{padding:7px 12px;border-radius:999px;background:var(--paper);font-size:13px;font-weight:600}
.report-fields span:before{content:"✓ ";color:var(--teal)}
.process-caption{color:#8C97A6}

/* ---------- Commitment ---------- */
.commitment-wrap{max-width:var(--max);margin:0 auto;padding:0 28px}
.commitment{position:relative;display:grid;grid-template-columns:auto 1fr auto;gap:30px;align-items:center;padding:40px;border-radius:24px;background:#FFF6E6;border:1px solid #F1DDB5}
.commitment-icon{width:72px;height:72px;border-radius:20px;background:#fff;display:grid;place-items:center}
.commitment-icon svg{width:40px;fill:none;stroke:var(--amber);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.commitment h2{font-size:clamp(24px,2.8vw,32px);margin:12px 0 8px}
.commitment p{margin:0;color:var(--body);max-width:620px}
.commitment-link{display:inline-flex;gap:10px;align-items:center;font-weight:700;white-space:nowrap;padding:14px 22px;border-radius:999px;background:var(--ink);color:#fff;transition:background .2s}
.commitment-link:hover{background:var(--primary)}

/* ---------- FAQ ---------- */
.faq{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}
.faq-heading{position:sticky;top:110px}
.faq-heading h2{margin:18px 0 14px}
.faq-heading h2 em{display:block}
.faq-heading p{color:var(--body);margin:0 0 24px}
.faq-zalo{display:inline-flex;gap:8px;font-weight:700;color:var(--primary);border-bottom:2px solid currentColor;padding-bottom:2px}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list details:first-child{border-top:1px solid var(--line)}
.faq-list summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:24px 0;font-size:17px;font-weight:700;letter-spacing:-.01em;transition:color .2s}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{color:var(--primary)}
.faq-list summary span{position:relative;width:34px;height:34px;flex:none;border-radius:50%;border:1.5px solid var(--line);transition:background .25s,border-color .25s,transform .3s}
.faq-list summary span:before,.faq-list summary span:after{content:"";position:absolute;left:50%;top:50%;width:12px;height:2px;margin:-1px 0 0 -6px;background:var(--ink);border-radius:2px;transition:transform .3s,background .25s}
.faq-list summary span:after{transform:rotate(90deg)}
.faq-list details[open] summary span{background:var(--ink);border-color:var(--ink);transform:rotate(180deg)}
.faq-list details[open] summary span:before,.faq-list details[open] summary span:after{background:#fff}
.faq-list details[open] summary span:after{transform:rotate(0)}
.faq-list details p{margin:0;padding:0 50px 26px 0;color:var(--body);animation:fade .35s ease}

/* ---------- Final CTA ---------- */
.final-cta{position:relative;overflow:hidden;background:var(--ink);color:#fff}
.final-cta:before{content:"";position:absolute;width:900px;height:900px;left:50%;top:40%;transform:translateX(-50%);border-radius:50%;border:3px solid transparent;background:var(--rainbow) border-box;-webkit-mask:linear-gradient(#000 0 0) padding-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:.35}
.final-inner{position:relative;max-width:var(--max);margin:auto;padding:110px 28px;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:end}
.final-cta h2{font-size:clamp(36px,5vw,62px);margin:18px 0 14px}
.final-cta h2 em{color:#9FD6EA;display:block}
.final-cta p{margin:0;color:rgba(255,255,255,.7)}
.final-buttons{display:flex;flex-direction:column;gap:12px}

/* ---------- Footer ---------- */
.footer{background:#0E1B2E;color:rgba(255,255,255,.7);font-size:14px}
.footer-inner{max-width:var(--max);margin:auto;padding:40px 28px 24px;display:flex;flex-wrap:wrap;gap:20px 36px;align-items:center}
.footer .brand{color:#fff}
.footer .brand-type small{color:rgba(255,255,255,.5)}
.footer nav{display:flex;gap:24px;margin-left:auto}
.footer nav a:hover,.footer-zalo:hover{color:#fff}
.footer-zalo{font-weight:700;color:var(--amber)}
.footer-copy{display:block;max-width:var(--max);margin:auto;padding:18px 28px 30px;border-top:1px solid rgba(255,255,255,.08);color:rgba(255,255,255,.45)}

/* ---------- Mobile Zalo ---------- */
.mobile-zalo{display:none;position:fixed;z-index:60;right:16px;bottom:16px;align-items:center;gap:8px;height:52px;padding:0 20px;border-radius:999px;background:#0068FF;color:#fff;font-weight:700;box-shadow:0 14px 30px -10px rgba(0,104,255,.6);transform:translateY(120px);transition:transform .4s cubic-bezier(.2,.8,.2,1)}
.mobile-zalo svg{width:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linejoin:round}
.mobile-zalo.is-visible{transform:none}

/* ---------- Motion ---------- */
.load{animation:rise .9s calc(var(--d,0) * .12s) both cubic-bezier(.2,.8,.2,1)}
.js .reveal{opacity:0;transform:translateY(28px);transition:opacity .8s cubic-bezier(.2,.8,.2,1),transform .8s cubic-bezier(.2,.8,.2,1);transition-delay:var(--rd,0s)}
.js .reveal.is-in{opacity:1;transform:none}
@keyframes rise{from{opacity:0;transform:translateY(24px)}}
@keyframes arc{to{stroke-dashoffset:0}}
@keyframes draw{from{transform:scaleX(0)}}
@keyframes float{50%{transform:translateY(-10px)}}
@keyframes pulse{70%{box-shadow:0 0 0 10px rgba(76,184,122,0)}100%{box-shadow:0 0 0 0 rgba(76,184,122,0)}}
@keyframes fade{from{opacity:0;transform:translateY(-6px)}}
@media (prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}.js .reveal{opacity:1;transform:none}.bridge-arc path{stroke-dashoffset:0}}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:30px;padding-top:50px}
  .hero-visual{max-width:540px;width:100%;margin:0 auto}
  .facts{grid-template-columns:1fr 1fr;margin:0 28px}
  .fact:nth-child(3){border-left:0}
  .fact:nth-child(n+3){border-top:1px solid var(--line)}
  .lead-inner,.learning,.faq,.takeaway{grid-template-columns:1fr;gap:44px}
  .section-heading{grid-template-columns:1fr;gap:20px}
  .level-grid{grid-template-columns:1fr 1fr}
  .faq-heading{position:static}
  .commitment{grid-template-columns:auto 1fr}
  .commitment-link{grid-column:1/-1;justify-self:start}
  .final-inner{grid-template-columns:1fr;align-items:start}
  .final-buttons{flex-direction:row;flex-wrap:wrap}
}
@media (max-width:860px){
  .header-cta{display:none}
  .menu{display:block}
  .nav{position:fixed;left:0;right:0;top:76px;margin:0;flex-direction:column;gap:0;padding:12px 24px 28px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 30px 40px -30px rgba(20,37,61,.35);transform:translateY(-12px);opacity:0;visibility:hidden;transition:transform .3s,opacity .3s,visibility .3s}
  .nav.nav-open{transform:none;opacity:1;visibility:visible}
  .nav a{font-size:17px;padding:14px 0;border-bottom:1px solid var(--line);color:var(--ink)}
  .nav a:after{display:none}
  .nav .nav-cta{display:flex;justify-content:center;margin-top:18px;border:0;border-radius:999px;background:var(--ink);color:#fff;padding:15px}
  .mobile-zalo{display:inline-flex}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .section{padding:80px 20px}
  .header-inner,.hero-inner,.lead-inner,.final-inner,.footer-inner,.commitment-wrap{padding-left:20px;padding-right:20px}
  .hero-inner{padding-top:36px}
  .hero-actions .button{width:100%}
  .hero-visual{padding-top:40px}
  .floating-stat{left:-6px;top:auto;bottom:-24px}
  .visual-tag{top:44px;right:-4px}
  .facts{grid-template-columns:1fr;margin:40px 20px 0}
  .fact+.fact{border-left:0;border-top:1px solid var(--line)}
  .lead-section{margin-top:70px}
  .lead-inner{padding-top:70px;padding-bottom:70px}
  .lead-form{padding:24px}
  .form-grid{grid-template-columns:1fr}
  .course-grid,.level-grid,.takeaway-grid{grid-template-columns:1fr}
  .course-card{padding:28px}
  .course-top{margin-bottom:30px}
  .course-bottom{flex-direction:column;align-items:stretch}
  .course-bottom a{justify-content:center}
  .placement-note{flex-wrap:wrap}
  .process-flow{grid-template-columns:1fr}
  .process-connector{transform:rotate(90deg);justify-self:center}
  .learning-process{padding:22px}
  .commitment{grid-template-columns:1fr;padding:28px}
  .faq-list summary{font-size:16px}
  .faq-list details p{padding-right:0}
  .final-buttons .button{width:100%}
  .footer nav{margin-left:0}
  .footer-copy{padding-bottom:90px}
}

/* Small interaction and form refinements */
.field-help{margin-top:-4px;color:var(--body);font-size:11.5px;font-weight:500;line-height:1.4}
html :target{scroll-margin-top:96px}
@media (max-width:860px){html :target{scroll-margin-top:84px}}


/* Editorial images */
.photo-frame{aspect-ratio:16/9;border-radius:22px}
.photo-frame img{object-position:center;transform:none}
.hero-visual:hover .photo-frame img{transform:none}
.bridge-arc,.photo-caption,.floating-stat,.visual-tag{display:none}
.editorial-visual{margin:0;overflow:hidden;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:0 18px 44px -32px rgba(20,37,61,.35)}
.editorial-visual img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.editorial-visual figcaption{padding:14px 18px;color:var(--body);font-size:13px;line-height:1.55}
.level-visual{margin:0 0 32px}
.exam-visual{margin:36px 0 24px}
.platform-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:640px){.photo-frame{border-radius:18px}.platform-grid{grid-template-columns:1fr}.editorial-visual figcaption{padding:12px 14px;font-size:12.5px}}


.photo-frame:after{display:none}


/* Subtle motion polish */
:root{--motion-ease:cubic-bezier(.22,.75,.25,1);--motion-fast:.22s;--motion-smooth:.55s}
.js .reveal{transition-timing-function:var(--motion-ease)}
.js .course-grid>.course-card:nth-child(2){--rd:.08s}
.js .level-grid>.level-card:nth-child(2){--rd:.06s}
.js .level-grid>.level-card:nth-child(3){--rd:.12s}
.js .level-grid>.level-card:nth-child(4){--rd:.18s}
.js .level-grid>.level-card:nth-child(5){--rd:.24s}
.js .level-grid>.level-card:nth-child(6){--rd:.3s}
.js .platform-grid>.editorial-visual:nth-child(2){--rd:.1s}
.js .learning-process{--rd:.1s}
.hero:before{animation:heroGlow 18s var(--motion-ease) infinite alternate}
.hero:after{animation:heroGlow 22s var(--motion-ease) -8s infinite alternate-reverse}
@keyframes heroGlow{from{transform:translate3d(0,0,0) scale(1)}to{transform:translate3d(16px,-12px,0) scale(1.035)}}
.brand img{transition:transform .4s var(--motion-ease)}
.photo-frame img{transition:transform .9s var(--motion-ease)}
.editorial-visual img{transition:transform .8s var(--motion-ease)}
.button{transition:transform .24s var(--motion-ease),background .24s ease,box-shadow .3s ease,border-color .24s ease}
.course-card,.level-card{transition-timing-function:var(--motion-ease)}
.fact{transition:background .25s ease,color .25s ease}
.process-step{transition:transform .3s var(--motion-ease),background .3s ease,border-color .3s ease}
.commitment-icon svg{transition:transform .55s var(--motion-ease)}
.faq-list summary span{transition:background .25s ease,border-color .25s ease,transform .35s var(--motion-ease)}
.mobile-zalo{transition:transform .45s var(--motion-ease),box-shadow .25s ease}
@media (hover:hover){
  .brand:hover img{transform:rotate(-6deg) scale(1.08)}
  .hero-visual:hover .photo-frame img{transform:scale(1.018)}
  .editorial-visual:hover img{transform:scale(1.012)}
  .button:hover:not(:disabled){transform:translateY(-2px)}
  .button-primary:hover:not(:disabled){box-shadow:0 18px 38px -15px rgba(20,37,61,.55)}
  .course-card:hover,.level-card:hover{transform:translateY(-5px)}
  .fact:hover{background:var(--paper)}
  .process-step:hover{transform:translateY(-3px);background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2)}
  .commitment:hover .commitment-icon svg{transform:rotate(-6deg) scale(1.05)}
  .mobile-zalo:hover{box-shadow:0 18px 36px -12px rgba(0,104,255,.65)}
}
.button:active:not(:disabled),.mobile-zalo:active{transform:scale(.985)}
@media(max-width:640px){
  .js .level-grid>.level-card:nth-child(n){--rd:0s}
  .hero:before,.hero:after{animation-duration:26s}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .reveal{opacity:1;transform:none}
}