:root{--blue:#0752c8;--navy:#092e71;--orange:#ff7600;--ink:#112243;--muted:#516078;--line:#e4eaf2;--bg:#f5f9ff;--green:#16813c}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;color:var(--ink);font:16px/1.55 'Be Vietnam Pro',Arial,sans-serif;background:#fff;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:inherit}
.container{width:min(1180px,calc(100% - 32px));margin:auto}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* Nút */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:13px 22px;font:700 15px/1.2 inherit;text-decoration:none;color:#fff;cursor:pointer;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 18px #002c7b2b}
.btn-orange{background:linear-gradient(110deg,#ff6500,#ff8d08);box-shadow:0 5px 11px #ff7a0050}
.btn-blue{background:linear-gradient(100deg,#0047af,#0864d7)}
.btn-outline{color:var(--ink);border:2px solid #f0831a;background:#fff}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #7fb0ff;outline-offset:2px}

/* Header */
.site-header{background:#fff;border-bottom:1px solid #edf0f4;position:sticky;top:0;z-index:30}
.nav-wrap{height:68px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand img{height:40px;width:auto;display:block}
.nav{display:none;align-items:center;gap:28px}
.nav a{text-decoration:none;font-size:14px;font-weight:600;color:#121a2b}
.nav a:hover{color:var(--blue)}
.nav .tel{color:var(--blue);font-weight:700}
.menu-toggle{display:inline-flex;border:1px solid var(--line);background:#fff;border-radius:10px;width:44px;height:44px;align-items:center;justify-content:center;font-size:22px;cursor:pointer}
.nav.open{display:flex;position:absolute;left:0;right:0;top:68px;background:#fff;flex-direction:column;align-items:flex-start;padding:16px;gap:16px;border-bottom:1px solid var(--line);box-shadow:0 12px 20px #0b255a14}

/* Hero */
.hero{background:linear-gradient(125deg,#f2f8ff,#fff 60%);padding:28px 0 36px;overflow:hidden}
.hero-grid{display:grid;gap:28px}
.eyebrow{font-size:20px;margin:0 0 2px;color:#172034}
.hero h1{font-size:clamp(34px,8vw,56px);line-height:1.1;color:var(--blue);margin:0;font-weight:800}
.hero h1 em{font-style:normal;color:var(--orange)}
.intro{max-width:480px;margin:14px 0}
.hero-points{list-style:none;margin:12px 0 20px;padding:0;display:grid;gap:8px}
.hero-points li{display:flex;gap:10px;align-items:center;font-size:15px}
.hero-points li:before{content:'✓';display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;flex:0 0 22px;border-radius:50%;background:#e4f0ff;color:var(--blue);font-weight:800;font-size:13px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-img{display:none}

/* Form */
.consult-form{background:#fff;padding:22px 20px 16px;border-radius:18px;box-shadow:0 4px 24px #60718d2e;border:1px solid var(--line)}
.consult-form h2{font-size:18px;text-align:center;margin:0 0 14px;line-height:1.3}
.consult-form h2 strong{color:var(--orange)}
.field{margin:10px 0}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:4px;color:#2a3a57}
.field input,.field select{width:100%;height:46px;border:1px solid #d9e1ec;border-radius:10px;padding:0 12px;font:15px inherit;color:#1c2733;background:#fff}
.field select{appearance:auto}
.form-submit{width:100%;margin-top:6px}
.form-note{display:block;margin:10px 0 0;color:#6b7686;text-align:center;font-size:12px}
.form-error{display:none;color:#c0392b;font-size:13px;margin:6px 0 0}

/* Section */
.section{padding:44px 0}
.section.alt{background:var(--bg)}
.section-title{text-align:center;font-size:clamp(24px,5vw,32px);margin:0 0 8px;line-height:1.25}
.section-title span{color:var(--blue)}
.section-sub{text-align:center;color:var(--muted);margin:0 auto 24px;max-width:620px}

/* Lọc ngành */
.finder{display:grid;gap:12px;margin-bottom:20px}
.search{width:100%;height:48px;border:1px solid #d9e1ec;border-radius:12px;padding:0 14px;font:15px inherit}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid #cfdcf0;background:#fff;color:#1b3566;border-radius:999px;padding:8px 14px;font:600 13px/1 inherit;cursor:pointer}
.chip[aria-pressed=true]{background:var(--blue);border-color:var(--blue);color:#fff}
.result-count{color:var(--muted);font-size:14px;margin:0 0 12px}
.empty{display:none;text-align:center;padding:28px;border:1px dashed #cfdcf0;border-radius:14px;color:var(--muted)}

/* Thẻ trường */
.school-grid{display:grid;gap:16px}
.school-card{border:1px solid var(--line);border-radius:16px;background:#fff;padding:18px;display:flex;flex-direction:column;gap:14px;box-shadow:0 2px 8px #042f6c0d}
.school-card[hidden]{display:none}
.school-head{display:flex;gap:14px;align-items:center}
.school-logo{width:72px;height:72px;flex:0 0 72px;border-radius:12px;background:#f5f8fd;display:flex;align-items:center;justify-content:center;overflow:hidden}
.school-logo img{width:100%;height:100%;object-fit:contain}
.school-logo .mono{font-weight:800;color:var(--blue);font-size:22px}
.school-card h3{margin:0;font-size:17px;line-height:1.35;color:#0e4aa8}
.major-chips{display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none}
.major-chips li{font-size:12px;background:#eef5ff;color:#16427f;border-radius:999px;padding:4px 10px}
.major-chips li.hit{background:#fff1e3;color:#a14a00;font-weight:700}
.school-card .btn{margin-top:auto;width:100%;padding:12px}
.school-card .soon{font-size:12px;color:var(--muted);text-align:center;margin:-6px 0 0}

/* Lợi ích */
.benefits{display:grid;gap:14px}
.benefit{display:flex;gap:14px;align-items:center;padding:16px;border:1px solid #e9edf2;border-radius:16px;background:#fff}
.benefit img{width:64px;height:64px;object-fit:contain;flex:0 0 64px}
.benefit h3{font-size:16px;margin:0 0 4px;line-height:1.3}
.benefit p{margin:0;font-size:14px;color:#5b687d}

/* Quy trình */
.steps{display:grid;gap:14px;list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;counter-increment:s}
.steps img{width:64px;height:64px;object-fit:contain;flex:0 0 64px}
.steps b{display:block;font-size:15px}
.steps span{font-size:13px;color:var(--muted)}
.steps li:before{content:counter(s);width:30px;height:30px;flex:0 0 30px;border-radius:50%;background:var(--orange);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}

/* FAQ */
.faq-list{max-width:820px;margin:auto;display:grid;gap:10px}
details{border:1px solid var(--line);border-radius:14px;background:#fff;padding:0 18px}
summary{cursor:pointer;font-weight:700;padding:15px 0;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary:after{content:'+';color:var(--blue);font-size:22px;line-height:1}
details[open] summary:after{content:'–'}
details p{margin:0 0 16px;color:#3b4a63}

/* CTA cuối */
.cta{background:linear-gradient(120deg,#0647b0,#0a64d8);color:#fff;text-align:center;padding:44px 0}
.cta h2{margin:0 0 8px;font-size:clamp(22px,4.5vw,30px);line-height:1.3}
.cta p{margin:0 0 18px;opacity:.92}

/* Form cuối trang */
.form-wrap{max-width:520px;margin:auto}

/* Footer */
.footer{background:#0b2556;color:#cfdcf5;padding:18px 0 88px;font-size:13px;text-align:center}
.footer img{height:36px;width:auto;filter:brightness(0) invert(1);opacity:.95}
.footer .cols{display:grid;gap:18px}
.footer h4{margin:0 0 6px;color:#fff;font-size:15px}
.footer p{margin:0 0 6px}.footer b{color:#fff}
.footer a{text-decoration:none;color:#fff;font-weight:700}
.disclaimer{margin-top:18px;border-top:1px solid #234078;padding-top:14px;font-size:12px;color:#9fb3d9}

/* Thanh gọi cố định (di động) */
.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:40;display:flex;gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 16px #0b255a14}
.sticky-cta a{flex:1;text-align:center;text-decoration:none;border-radius:11px;padding:12px;font-weight:700;font-size:14px}
.sticky-cta .a1{background:linear-gradient(110deg,#ff6500,#ff8d08);color:#fff}
.sticky-cta .a2{background:#e7f0ff;color:#0647b0}

/* Trang cảm ơn */
.thanks{max-width:640px;margin:48px auto;text-align:center;padding:0 16px}
.thanks h1{font-size:28px;margin:12px 0}
.thanks .ok{width:64px;height:64px;border-radius:50%;background:#e7f6ec;color:var(--green);font-size:34px;display:inline-flex;align-items:center;justify-content:center}
.checklist{text-align:left;background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:16px 20px;margin:22px 0}
.checklist li{margin:6px 0}

@media(min-width:760px){
  .school-grid{grid-template-columns:repeat(2,1fr)}
  .benefits{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer .cols{grid-template-columns:1.2fr 1.6fr 1fr}
}
@media(min-width:980px){
  .menu-toggle{display:none}
  .nav{display:flex}
  .nav-wrap{height:76px}
  .brand img{height:46px}
  .hero{padding:44px 0 48px}
  .hero-grid{grid-template-columns:1.1fr .9fr;align-items:center;gap:40px}
  .hero-img{display:block;margin-top:18px;max-width:460px}
  .hero-img img{width:100%;display:block;mix-blend-mode:multiply}
  .school-grid{grid-template-columns:repeat(3,1fr)}
  .benefits{grid-template-columns:repeat(4,1fr)}
  .benefit{flex-direction:column;text-align:center}
  .steps{grid-template-columns:repeat(5,1fr)}
  .steps li{flex-direction:column;text-align:center}
  .finder{grid-template-columns:320px 1fr;align-items:center}
  .sticky-cta{display:none}
  .footer{padding-bottom:18px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.site-header,.sticky-cta{display:none}}

/* Chia trang trường: vuốt ngang */
.pager{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none;overscroll-behavior-x:contain}
.pager::-webkit-scrollbar{display:none}
.pager .page{flex:0 0 100%;min-width:0;scroll-snap-align:start}
.pager .school-grid{align-items:stretch}
.pager-dots{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:18px}
.pager-dots .dot{width:10px;height:10px;padding:0;border-radius:50%;border:0;background:#c9d6ea;cursor:pointer}
.pager-dots .dot[aria-current=true]{background:var(--blue);width:26px;border-radius:6px}
.pager-dots .pg-prev,.pager-dots .pg-next{width:40px;height:40px;border-radius:50%;border:1px solid #cfdcf0;background:#fff;color:var(--blue);font-size:24px;line-height:1;cursor:pointer}
.pager-dots .pg-prev:disabled,.pager-dots .pg-next:disabled{opacity:.35;cursor:default}
@media(prefers-reduced-motion:reduce){.pager{scroll-behavior:auto}}