/* hoc.kita.edu.vn – trang giới thiệu & trang khóa học (cùng màu với lớp học KITA) */
:root{--navy:#1B3F94;--navy-2:#2E5BC7;--navy-bg:#EEF2FB;--red:#D92A2F;--red-bg:#FCE9EA;--gold:#B87A06;--gold-bg:#FFF6E0;--ok:#1E7B45;--fg:#18213A;--muted:#5A6480;--line:#DDE2EE;--bg:#F3F5FB;--paper:#fff;--shadow:0 6px 24px rgba(27,63,148,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;color:var(--fg);background:var(--bg);line-height:1.6;font-size:16px}
img{max-width:100%;height:auto}a{color:var(--navy)}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}
/* đầu trang */
.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-top:4px solid var(--red);box-shadow:0 2px 10px rgba(27,63,148,.08)}
.top .wrap{display:flex;align-items:center;gap:12px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit;min-width:0}
.brand img{height:48px;width:auto}
.brand span{display:flex;flex-direction:column;line-height:1.15}
.brand em{font-style:normal;font-weight:800;font-size:11px;color:var(--navy);text-transform:uppercase}
.brand b{font-size:20px;font-weight:900;color:var(--red);letter-spacing:.06em}
.brand small{font-size:11px;color:var(--muted);font-style:italic}
.nav{margin-left:auto;display:flex;gap:8px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border-radius:999px;padding:10px 18px;font-weight:800;font-size:15px;text-decoration:none;border:2px solid transparent;cursor:pointer;font-family:inherit;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px)}
.btn.red{background:linear-gradient(135deg,#E8353A,var(--red));color:#fff;box-shadow:0 6px 16px rgba(217,42,47,.3)}
.btn.navy{background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;box-shadow:0 6px 16px rgba(27,63,148,.3)}
.btn.ghost{background:#fff;color:var(--navy);border-color:var(--navy)}
.btn.big{padding:14px 26px;font-size:17px}
/* khối */
section{padding:44px 0}
section.alt{background:#fff}
.hero{background:radial-gradient(circle at 85% 10%,rgba(217,42,47,.10),transparent 45%),linear-gradient(160deg,#fff 0%,var(--navy-bg) 100%);padding:52px 0 44px}
.kicker{display:inline-block;background:var(--red-bg);color:var(--red);font-weight:800;font-size:13px;border-radius:999px;padding:4px 12px;letter-spacing:.03em;text-transform:uppercase}
h1{font-size:clamp(28px,5vw,44px);line-height:1.2;color:var(--navy);margin:12px 0 12px;font-weight:900;text-wrap:balance}
h2{font-size:clamp(22px,3.6vw,32px);line-height:1.25;color:var(--navy);margin:0 0 14px;font-weight:900;text-wrap:balance}
h3{font-size:19px;color:var(--navy);margin:0 0 6px}
.lead{font-size:18px;color:var(--muted);max-width:720px}
.step-tag{font-size:12px;font-weight:800;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin-bottom:4px}
.cta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow)}
.card.soft{background:var(--navy-bg);box-shadow:none;border-color:transparent}
.ic{font-size:28px;line-height:1;margin-bottom:8px}
.pain{display:flex;gap:12px;align-items:flex-start}.pain b.n{flex:none;width:34px;height:34px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font-weight:900}
.quote{border-left:5px solid var(--red);background:#fff;border-radius:0 14px 14px 0;padding:14px 18px;font-size:18px;font-style:italic;color:var(--fg)}
.list{padding-left:0;list-style:none;margin:0}.list li{padding:6px 0 6px 30px;position:relative}.list li::before{content:"✓";position:absolute;left:4px;color:var(--ok);font-weight:900}
.x li::before{content:"✗";color:var(--red)}
.steps3{counter-reset:s}.steps3 .card{position:relative;padding-top:44px}.steps3 .card::before{counter-increment:s;content:counter(s);position:absolute;top:14px;left:20px;width:28px;height:28px;border-radius:50%;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:900}
table.cmp{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden;box-shadow:var(--shadow);font-size:15px}
table.cmp th,table.cmp td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.cmp th{background:var(--navy);color:#fff}table.cmp td.k{background:var(--navy-bg);font-weight:700}
.tblwrap{overflow-x:auto}
.offer{background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;border-radius:22px;padding:28px}
.offer h2{color:#fff}.offer .list li::before{color:#FFD7D8}
.badge{display:inline-block;background:#fff;color:var(--red);font-weight:900;border-radius:999px;padding:4px 12px;font-size:13px}
.guar{border:2px dashed var(--ok);background:#EAF6EF;border-radius:18px;padding:20px}
/* form */
form.reg{display:grid;gap:12px}
form.reg label{display:grid;gap:4px;font-weight:700;font-size:14px}
form.reg input,form.reg select,form.reg textarea{font:inherit;padding:11px 12px;border:1.5px solid var(--line);border-radius:12px;background:#fff}
form.reg input:focus,form.reg select:focus,form.reg textarea:focus{outline:3px solid rgba(27,63,148,.2);border-color:var(--navy)}
.chk{display:flex!important;grid-template-columns:none!important;gap:8px!important;align-items:flex-start;font-weight:500!important}
.msg{min-height:20px;font-weight:700}.msg.err{color:var(--red)}.msg.ok{color:var(--ok)}
/* khóa học (trang chủ) */
.course{display:grid;grid-template-columns:200px 1fr;gap:18px;align-items:center}
.course .cv{border-radius:14px;background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;padding:20px;min-height:150px;display:flex;flex-direction:column;justify-content:flex-end}
.course .cv b{font-size:26px;line-height:1.1}.course .cv small{opacity:.85}
.course.soon .cv{background:linear-gradient(135deg,#9AA3BA,#C5CBDA)}
.chip{display:inline-block;font-size:12.5px;font-weight:700;border-radius:999px;padding:3px 10px;background:var(--navy-bg);color:var(--navy);margin:2px 4px 2px 0}
footer{background:#0F2257;color:#C9D3EA;padding:30px 0;font-size:14px}footer a{color:#fff}
.muted{color:var(--muted)}.small{font-size:14px}.center{text-align:center}
@media (max-width:780px){.g2,.g3{grid-template-columns:1fr}.course{grid-template-columns:1fr}.nav .hide-m{display:none}section{padding:34px 0}}

/* điện thoại: giữ đủ tên trung tâm + KITA + slogan, nút đăng nhập gọn */
@media (max-width:780px){.top .wrap{gap:8px;min-height:60px}.brand{gap:7px}.brand img{height:40px}.brand em{font-size:8.5px;line-height:1.2;text-wrap:balance;max-width:190px}.brand b{font-size:18px;line-height:1.05}.brand small{font-size:9.5px}.nav .btn{padding:9px 13px;font-size:14px;white-space:nowrap}}
@media (max-width:520px){.hide-s{display:none}}
@media (max-width:370px){.brand img{height:34px}.brand em{font-size:7.8px}.brand b{font-size:16px}.brand small{font-size:9px}.nav .btn{padding:8px 11px;font-size:13px}}
/* mở toàn màn hình trên iPhone: chừa tai thỏ / góc bo */
.top{padding-top:env(safe-area-inset-top,0px)}