/* APTA EDU – màu theo logo: đỏ #E8202A, đen #16181D, nền trắng ấm; vàng chỉ làm điểm nhấn nhỏ */
:root{--red:#E8202A;--red-d:#C21118;--ink:#16181D;--muted:#5A5F6B;--line:#ECE6E3;--bg:#FFFFFF;--soft:#FFF5F3;--sand:#FAF7F2;--gold:#FFC93C;
  --f-h:"Nunito","Be Vietnam Pro",system-ui,sans-serif;--f-b:"Be Vietnam Pro",system-ui,sans-serif;--r:18px;--sh:0 10px 30px rgba(22,24,29,.08)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;font:16px/1.65 var(--f-b);color:var(--ink);background:var(--bg)}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--f-h);font-weight:900;line-height:1.18;margin:0 0 .5em;text-wrap:balance}
h1{font-size:clamp(30px,5vw,50px)} h2{font-size:clamp(25px,3.4vw,36px)} h3{font-size:20px}
p{margin:0 0 1em}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px}
.small{font-size:14px}
.muted{color:var(--muted)}
.eyebrow{display:inline-block;font-weight:800;font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--red);margin-bottom:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:700;text-decoration:none;border:2px solid transparent;cursor:pointer;font-size:16px;white-space:nowrap;transition:.15s}
.btn-red{background:var(--red);color:#fff;box-shadow:0 6px 16px rgba(232,32,42,.28)}
.btn-red:hover{background:var(--red-d)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:#fff}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btns{display:flex;gap:12px;flex-wrap:wrap}

/* Đầu trang */
header.site{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hrow{display:flex;align-items:center;gap:18px;min-height:74px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand img{width:54px;height:auto}
.brand b{font:900 22px var(--f-h);letter-spacing:.03em;display:block;line-height:1}
.brand b em{font-style:normal;color:var(--red)}
.brand small{display:block;font-size:12px;color:var(--muted);margin-top:3px}
nav.main{display:flex;gap:4px;margin-left:auto}
nav.main a{text-decoration:none;font-weight:600;padding:8px 12px;border-radius:10px}
nav.main a:hover{background:var(--soft)}
nav.main a.on{color:var(--red);background:var(--soft)}
.hact{display:flex;align-items:center;gap:10px}
.hotline{text-decoration:none;line-height:1.1;text-align:right}
.hotline small{display:block;font-size:11px;color:var(--muted)} .hotline b{color:var(--red);font-size:16px}
.hcta{padding:10px 16px;font-size:15px}
.login{font-size:13px;color:var(--muted);text-decoration:none;border:1px solid var(--line);padding:6px 10px;border-radius:999px}
.login:hover{color:var(--ink);border-color:var(--ink)}
.burger{display:none;border:0;background:var(--soft);font-size:22px;width:44px;height:44px;border-radius:12px;cursor:pointer}
nav.main a,.hotline b,.brand b,.login{white-space:nowrap}
@media (max-width:1460px){.hotline{display:none}}
@media (max-width:1140px){.brand small{display:none}}
@media (max-width:920px){
  nav.main{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;padding:10px 16px 16px;border-bottom:1px solid var(--line);box-shadow:var(--sh)}
  nav.main.open{display:flex} nav.main a{padding:12px}
  .burger{display:block} .hcta,.login{display:none} .hact{margin-left:auto}
}

/* Khối trang */
section{padding:64px 0}
section.alt{background:var(--sand)}
.hero{padding:44px 0 56px;background:linear-gradient(180deg,var(--soft),#fff)}
.hero .grid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.hero h1 em{font-style:normal;color:var(--red)}
.hero .lead{font-size:18px;color:var(--muted);max-width:560px}
.hero .ph{border-radius:24px;overflow:hidden;box-shadow:var(--sh);aspect-ratio:4/3}
.hero .ph img{width:100%;height:100%;object-fit:cover}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 24px}
.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-weight:600;font-size:14px}
@media (max-width:860px){.hero .grid{grid-template-columns:1fr}.hero .ph{order:-1}}
.sec-head{max-width:720px;margin-bottom:28px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--sh);display:flex;flex-direction:column}
.card img{aspect-ratio:3/2;object-fit:cover;width:100%}
.card .in{padding:18px 20px 20px;display:flex;flex-direction:column;gap:6px;flex:1}
.card .in p{color:var(--muted);font-size:15px;margin:0}
.card .more{margin-top:auto;padding-top:8px;font-weight:700;color:var(--red);text-decoration:none}
a.card{text-decoration:none}
a.card:hover{transform:translateY(-2px);transition:.15s}
.feat{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.feat div{background:#fff;border-radius:var(--r);padding:20px;border:1px solid var(--line)}
.feat b{display:block;font:800 18px var(--f-h);margin:6px 0 4px}
.feat .ic{font-size:28px}
.feat p{color:var(--muted);font-size:15px;margin:0}
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.split .ph{border-radius:var(--r);overflow:hidden;box-shadow:var(--sh)}
@media (max-width:860px){.split{grid-template-columns:1fr}}
ul.tick{list-style:none;padding:0;margin:0 0 1em}
ul.tick li{padding-left:30px;position:relative;margin:8px 0}
ul.tick li:before{content:"✓";position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;background:var(--red);color:#fff;font-size:13px;font-weight:800;display:grid;place-items:center;margin-top:2px}
.shifts{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:16px 0}
.shifts div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;text-align:center}
.shifts b{display:block;font:900 24px var(--f-h);color:var(--red)}
.shifts small{color:var(--muted)}
@media (max-width:520px){.shifts{grid-template-columns:1fr}}
.steps{counter-reset:s;display:grid;gap:14px}
.steps li{list-style:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px 14px 62px;position:relative}
.steps li:before{counter-increment:s;content:counter(s);position:absolute;left:16px;top:14px;width:32px;height:32px;border-radius:50%;background:var(--ink);color:#fff;font-weight:800;display:grid;place-items:center}
.steps{padding:0;margin:0}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.gallery figure{margin:0;border-radius:14px;overflow:hidden;background:#eee}
.gallery img{aspect-ratio:4/3;object-fit:cover;width:100%}
.gallery figcaption{font-size:14px;padding:8px 10px;background:#fff;color:var(--muted)}
.cta-band{background:var(--ink);color:#fff;border-radius:24px;padding:36px;display:flex;gap:24px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cta-band h2{color:#fff;margin:0 0 6px}
.cta-band p{color:#cfd2d8;margin:0}
.crumb{font-size:14px;color:var(--muted);margin-bottom:10px}
.crumb a{text-decoration:none}
.page-head{padding:40px 0 28px;background:linear-gradient(180deg,var(--soft),#fff)}
.page-head .lead{font-size:18px;color:var(--muted);max-width:760px}
.prose{max-width:780px}
.prose h2{font-size:26px;margin-top:1.4em}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 18px;margin-bottom:10px}
.faq summary{font-weight:700;cursor:pointer}
.faq details p{margin:10px 0 0;color:var(--muted)}

/* Form đăng ký */
.form-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--sh)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 14px}
.form-grid .full{grid-column:1/-1}
@media (max-width:600px){.form-grid{grid-template-columns:1fr}}
label.f{display:grid;gap:5px;font-size:14px;font-weight:600}
label.f input,label.f select,label.f textarea{font:inherit;font-weight:400;border:1.5px solid var(--line);border-radius:12px;padding:11px 12px;background:#fff;width:100%}
label.f input:focus,label.f select:focus,label.f textarea:focus{outline:none;border-color:var(--red)}
.consent{display:flex;gap:8px;font-size:13px;color:var(--muted);align-items:flex-start}
.form-msg{margin-top:12px;font-weight:600}
.form-msg.ok{color:#0A7A4E} .form-msg.err{color:var(--red-d)}
.map{border:0;width:100%;height:340px;border-radius:var(--r)}

/* Chân trang */
footer.site{background:var(--ink);color:#C9CCD3;padding:48px 0 90px;margin-top:20px;font-size:15px}
footer.site a{text-decoration:none} footer.site a:hover{color:#fff}
.fgrid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:28px}
.fbrand img{background:#fff;border-radius:14px;padding:6px;margin-bottom:10px}
.fbrand b{color:#fff}
footer h4{color:#fff;margin:0 0 10px;font-size:16px}
footer ul{list-style:none;padding:0;margin:0} footer li{margin:7px 0}
.legal{border-top:1px solid #2A2D35;margin-top:28px;padding-top:16px;font-size:13px}
@media (max-width:860px){.fgrid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.fgrid{grid-template-columns:1fr}}
.mbar{display:none}
@media (max-width:720px){
  .mbar{display:grid;grid-template-columns:1fr 1fr 1.4fr;position:fixed;left:0;right:0;bottom:0;z-index:30;background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 14px rgba(0,0,0,.08);padding-bottom:env(safe-area-inset-bottom,0)}
  .mbar a{text-align:center;padding:13px 4px;font-weight:700;text-decoration:none;font-size:15px}
  .mbar a.go{background:var(--red);color:#fff}
  section{padding:48px 0}
}