/* Dot 344: hoc online tren hocve - cung bo mau landing (cam dat, xam than, nen sang, the trang bo tron). Khong thu vien ngoai. */
.el-wrap{max-width:1040px;margin:0 auto;padding:18px 16px 60px;}
.el-h{font-size:28px;line-height:1.25;margin:6px 0 4px;font-weight:800;}
.el-sub{color:#6B6B73;margin:0 0 16px;line-height:1.6;}
.el-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;}
.el-card{background:#fff;border-radius:18px;box-shadow:0 1px 2px rgba(46,46,51,.04),0 6px 20px rgba(46,46,51,.06);overflow:hidden;display:flex;flex-direction:column;color:inherit;text-decoration:none;}
.el-card img,.el-ph{width:100%;aspect-ratio:16/10;object-fit:cover;display:block;background:#FBE0CC;}
.el-card .in{padding:12px 14px 14px;display:flex;flex-direction:column;gap:4px;flex:1;}
.el-card b{font-size:16px;line-height:1.35;} .el-mut{color:#6B6B73;font-size:13px;}
.el-tag{display:inline-block;font-size:11.5px;font-weight:700;border-radius:99px;padding:2px 9px;background:#FFF1E6;color:#B4570B;margin-right:4px;}
.el-tag.ok{background:#E7F3EA;color:#2F6B3B;} .el-tag.warn{background:#FBF0DA;color:#8A6716;} .el-tag.mut{background:#F3F1EE;color:#6B6B73;}
.el-box{background:#fff;border-radius:18px;padding:16px 18px;margin:14px 0;box-shadow:0 1px 2px rgba(46,46,51,.04),0 6px 20px rgba(46,46,51,.05);}
.el-box h2{font-size:18px;margin:0 0 8px;}
.el-out{list-style:none;padding:0;margin:0;} .el-out li{display:flex;gap:10px;align-items:center;padding:9px 0;border-top:1px solid #EDE7E1;} .el-out li:first-child{border-top:none;}
.el-no{flex:0 0 28px;height:28px;border-radius:50%;background:#F3F1EE;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#6B6B73;}
.el-out li.open .el-no{background:#E8703A;color:#fff;} .el-out li.done .el-no{background:#2F6B3B;color:#fff;} .el-out a{color:inherit;font-weight:600;}
.el-form{display:grid;gap:10px;max-width:520px;} .el-form label{display:flex;flex-direction:column;gap:4px;font-size:13.5px;font-weight:600;}
.el-form input,.el-form textarea,.el-form select{font:inherit;padding:10px 12px;border:1px solid #EDE7E1;border-radius:12px;background:#fff;}
.el-form .chk{flex-direction:row;font-weight:400;align-items:flex-start;gap:8px;}
.el-err{background:#FDECEA;color:#A33A2A;border-radius:12px;padding:10px 12px;margin:10px 0;} .el-ok{background:#E7F3EA;color:#2F6B3B;border-radius:12px;padding:10px 12px;margin:10px 0;}
.el-video{position:relative;aspect-ratio:16/9;border-radius:16px;overflow:hidden;background:#2E2E33;color:#fff;display:flex;align-items:center;justify-content:center;text-align:center;}
.el-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}
.el-mark{position:absolute;z-index:2;pointer-events:none;font-size:12px;font-weight:600;color:rgba(255,255,255,.55);text-shadow:0 1px 2px rgba(0,0,0,.4);animation:el-drift 38s linear infinite alternate;}
@keyframes el-drift{0%{top:8%;left:6%}25%{top:70%;left:20%}50%{top:30%;left:62%}75%{top:78%;left:70%}100%{top:12%;left:40%}}
@media (prefers-reduced-motion:reduce){.el-mark{animation:none;top:8%;left:6%;}}
.el-three{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;} .el-three .el-box{margin:0;}
.el-photos{display:flex;gap:8px;flex-wrap:wrap;} .el-photos img{width:120px;height:120px;object-fit:cover;border-radius:12px;}
.el-fb{background:#F3F1EE;border-radius:14px;padding:12px 14px;line-height:1.6;}
.el-nav{display:flex;justify-content:space-between;gap:8px;margin-top:14px;}
.el-qr{display:flex;gap:16px;flex-wrap:wrap;align-items:center;} .el-qr img{width:200px;height:200px;border-radius:12px;background:#fff;}
/* Dot 345: danh muc nhieu khoa - nhom theo chuong trinh, chip loc nhanh, the co tom tat 3 dong */
.el-chips{display:flex;gap:8px;flex-wrap:wrap;margin:4px 0 18px;} .el-chips a{background:#fff;border:1px solid #EDE7E1;border-radius:99px;padding:6px 12px;font-size:13px;font-weight:600;color:inherit;text-decoration:none;} .el-chips a span{color:#6B6B73;font-weight:400;margin-left:2px;}
.el-chips a:hover,.el-chips a:focus-visible{border-color:#E8703A;color:#B4570B;}
.el-group{margin:0 0 26px;scroll-margin-top:80px;} .el-group h2{font-size:20px;margin:0 0 10px;}
.el-ph{display:flex;align-items:center;justify-content:center;} .el-ph span{font-size:42px;font-weight:800;color:#E8703A;opacity:.55;}
.el-sum{color:#6B6B73;font-size:13px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
/* Dot 345: video gioi thieu tren dau trang khoa (dang ky la xem) + CTA chon hinh thuc hoc ngay duoi */
.el-intro{margin:6px 0 0;} .el-intro-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.45);}
.el-intro-in{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:8px;padding:20px;max-width:520px;} .el-intro-in b{font-size:20px;} .el-intro-in a:not(.st-btn){color:#fff;text-decoration:underline;}
.el-cta{margin-top:12px;} .el-modes{display:grid;gap:10px;} .el-modes h2{margin:0;}
.el-mode{display:flex;gap:10px;align-items:flex-start;border:1px solid #EDE7E1;border-radius:14px;padding:12px 14px;cursor:pointer;background:#fff;}
.el-mode:has(input:checked){border-color:#E8703A;background:#FFF8F2;} .el-mode input[type=radio]{margin-top:4px;accent-color:#E8703A;}
.el-mode>span{display:flex;flex-direction:column;gap:4px;flex:1;min-width:0;} .el-mode select{font:inherit;padding:9px 10px;border:1px solid #EDE7E1;border-radius:10px;background:#fff;max-width:100%;margin-top:4px;}

/* ===== Dot 348 (chu du an 29/10, tham-chieu/template hoconline): 3 man hoc online - danh sach (mau nui rung), gioi thieu khoa (mau "chirp" ban sang),
   man hoc (mau cu meo). Thong nhat: 1 cap phong (Playfair Display tieu de / Be Vietnam Pro noi dung / Dancing Script dong nho), 1 bang mau
   (xam than - cam dat ha do ruc - kem - be), 1 kieu nut. Khong style noi dong (CSP). Anh nen = <img> co lop. ===== */
.elx { --serif: 'Playfair Display', Georgia, 'Times New Roman', serif; --clay-d: #9C5F3E; --sand: #E9E1D3; --olive: #6F7560; }
.elx main { display: block; }
.ex-wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.ex-script { font-family: var(--script); font-size: 22px; margin: 0 0 2px; color: inherit; opacity: .9; }
.ex-giant { font-family: var(--serif); font-weight: 600; font-size: clamp(48px, 11vw, 132px); line-height: .95; letter-spacing: .02em; margin: 0; text-transform: uppercase; color: rgba(255,255,255,.94); text-shadow: 0 2px 30px rgba(0,0,0,.25); }
.ex-h2 { font-family: var(--serif); font-weight: 600; font-size: clamp(26px, 4vw, 38px); line-height: 1.15; margin: 0; text-transform: uppercase; letter-spacing: .03em; }
.ex-kicker { margin: 6px 0 0; font-size: 12.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); }
.ex-dash { display: block; width: 44px; height: 3px; background: var(--ink); margin: 22px 0; border-radius: 2px; }
.ex-p { color: var(--ink-2); line-height: 1.7; margin: 0 0 18px; max-width: 46ch; }
.ex-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.ex-btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 10px 22px; border-radius: 4px; font: 600 13px/1.2 var(--sans); letter-spacing: .1em; text-transform: uppercase; text-decoration: none; cursor: pointer; border: 1.5px solid transparent; background: none; color: inherit; }
.ex-btn.solid { background: var(--clay); color: #fff; border-color: var(--clay); } .ex-btn.solid:hover, .ex-btn.solid:focus-visible { background: var(--clay-d); border-color: var(--clay-d); }
.ex-btn.ghost { border-color: rgba(255,255,255,.85); color: #fff; } .ex-btn.ghost:hover, .ex-btn.ghost:focus-visible { background: rgba(255,255,255,.14); }
.ex-btn.line { border-color: var(--ink); color: var(--ink); } .ex-btn.line:hover, .ex-btn.line:focus-visible { background: var(--ink); color: #fff; }
.ex-btn.pill { border-radius: 99px; background: rgba(46,46,51,.78); color: #fff; } .ex-btn.sm { min-height: 36px; padding: 7px 14px; font-size: 11.5px; } .ex-btn.wide { width: 100%; }
/* -- danh sach: dau trang anh tran + chu rat lon -- */
.ex-hero { position: relative; min-height: min(86vh, 760px); display: flex; align-items: center; justify-content: center; text-align: center; overflow: hidden; background: #3c4239; color: #fff; }
.ex-hero-bg, .ex-band-bg, .ex-end-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ex-hero-bg { filter: saturate(.85) brightness(.72); }
.ex-hero-in { position: relative; padding: 90px 20px 60px; max-width: 900px; display: flex; flex-direction: column; align-items: center; gap: 16px; }
.ex-lead { max-width: 52ch; margin: 0; font-size: 15px; line-height: 1.7; color: rgba(255,255,255,.9); }
.ex-chips { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin: 28px auto 6px; }
.ex-chips a { border: 1px solid var(--line); border-radius: 99px; padding: 7px 14px; font-size: 13px; font-weight: 600; text-decoration: none; background: var(--paper); } .ex-chips a span { color: var(--ink-2); font-weight: 400; }
.ex-sec { padding: 56px 0 18px; scroll-margin-top: 70px; }
.ex-split { display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; align-items: center; margin-bottom: 26px; } .ex-split.rev .ex-copy { order: 2; }
.ex-pic { margin: 0; } .ex-pic img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 6px; -webkit-mask-image: linear-gradient(to left, #000 70%, transparent); mask-image: linear-gradient(to left, #000 70%, transparent); }
.ex-split.rev .ex-pic img { -webkit-mask-image: linear-gradient(to right, #000 70%, transparent); mask-image: linear-gradient(to right, #000 70%, transparent); }
.ex-band { position: relative; padding: 90px 20px; margin-top: 40px; overflow: hidden; background: var(--olive); }
.ex-card { position: relative; max-width: 560px; margin: 0 auto; background: var(--paper); padding: 40px 40px 34px; box-shadow: 0 20px 60px rgba(0,0,0,.25); border-radius: 4px; }
.ex-steps { margin: 0; padding-left: 20px; color: var(--ink-2); line-height: 1.75; font-size: 14.5px; } .ex-steps b { color: var(--ink); }
.ex-end { position: relative; padding: 110px 20px 120px; text-align: center; overflow: hidden; background: var(--sand); }
.ex-end-bg { opacity: .35; filter: grayscale(.4); } .ex-end-in { position: relative; display: flex; flex-direction: column; align-items: center; gap: 10px; } .ex-end-in .ex-btn { margin-top: 14px; }
/* -- gioi thieu khoa (mau chirp, ban sang) -- */
.cx { min-height: calc(100vh - 60px); display: flex; align-items: center; justify-content: center; padding: 30px 16px; background: var(--sand); }
.cx-frame { width: 100%; max-width: 1120px; display: grid; grid-template-columns: 1fr 340px; min-height: 520px; box-shadow: 0 24px 70px rgba(46,46,51,.18); border-radius: 6px; overflow: hidden; background: var(--paper); }
.cx-pic { position: relative; min-height: 420px; background: #3c4239; color: #fff; }
.cx-pic img, .cx-ph { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; } .cx-ph { background: linear-gradient(135deg, #4F5E4B, #2E2E33); }
.cx-pic::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(30,30,30,.72), rgba(30,30,30,.05) 60%); }
.cx-pic-in { position: absolute; left: 0; right: 0; bottom: 0; z-index: 1; padding: 36px 40px; }
.cx-title { font-family: var(--serif); font-weight: 600; font-size: clamp(40px, 7vw, 84px); line-height: .98; margin: 0 0 12px; }
.cx-lead { margin: 0; max-width: 56ch; font-size: 14.5px; line-height: 1.65; color: rgba(255,255,255,.88); }
.cx-panel { background: var(--clay); color: #fff; padding: 26px 26px 22px; display: flex; flex-direction: column; gap: 18px; }
.cx-back { color: rgba(255,255,255,.85); font-size: 13px; text-decoration: none; }
.cx-facts { display: grid; gap: 12px; } .cx-facts span { display: block; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; opacity: .8; } .cx-facts b { font-size: 17px; }
.cx-levels { margin: 0; padding-left: 18px; font-size: 13px; line-height: 1.6; opacity: .92; flex: 1; }
.cx-panel .ex-btn.solid { background: var(--ink); border-color: var(--ink); } .cx-panel .ex-btn.solid:hover { background: #1f1f23; }
.cx-brand { margin: 0; font-family: var(--script); font-size: 20px; text-align: right; opacity: .9; }
/* -- man hoc (mau cu meo): nen anh chuong trinh mo + khung kinh -- */
.lx { background: #cfc6b6; } .lx-bg { position: fixed; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; filter: blur(6px) saturate(.75); transform: scale(1.06); opacity: .9; }
.lx-main { position: relative; z-index: 1; max-width: 1180px; margin: 0 auto; padding: 26px 16px 70px; }
.lx-msg { max-width: 1180px; }
.lx-glass { position: relative; border-radius: 18px; background: rgba(233,225,211,.82); box-shadow: 0 30px 80px rgba(30,30,30,.28); overflow: hidden; }
@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) { .lx-glass { background: rgba(233,225,211,.62); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); } }
@media (prefers-reduced-transparency: reduce) { .lx-glass { background: #E9E1D3; -webkit-backdrop-filter: none; backdrop-filter: none; } }
.lx-top { display: flex; justify-content: space-between; gap: 10px; padding: 16px 26px; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); } .lx-top a { text-decoration: none; }
.lx-grid { display: grid; grid-template-columns: minmax(260px, .9fr) 1.4fr 74px; gap: 22px; align-items: center; padding: 6px 26px 30px; }
.lx-copy { text-align: center; }
.lx-title { font-family: var(--serif); font-weight: 600; font-size: clamp(38px, 5.4vw, 70px); line-height: .98; margin: 4px 0 10px; color: var(--ink); }
.lx-sub { margin: 0 0 12px; font-size: 12px; letter-spacing: .26em; text-transform: uppercase; color: var(--ink-2); }
.lx-p { margin: 0 auto 18px; max-width: 42ch; font-size: 13.5px; line-height: 1.65; color: var(--ink-2); } .lx-copy .ex-row { justify-content: center; }
.lx-video { aspect-ratio: 16/9; border-radius: 14px; box-shadow: 0 18px 50px rgba(30,30,30,.3); }
.el-intro-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: brightness(.45); }
.el-intro-in { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 20px; max-width: 520px; } .el-intro-in b { font-size: 19px; } .el-intro-in a:not(.ex-btn) { color: #fff; text-decoration: underline; }
.lx-small { font-size: 12.5px; }
.lx-rail { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.lx-arrow { text-decoration: none; font-size: 20px; line-height: 1; color: var(--ink-2); }
.lx-node { width: 54px; height: 54px; border-radius: 50%; display: flex; align-items: center; justify-content: center; text-decoration: none; background: rgba(255,255,255,.55); border: 2px solid rgba(255,255,255,.9); box-shadow: 0 6px 16px rgba(30,30,30,.18); font-weight: 700; font-size: 13px; color: var(--ink-2); }
.lx-node.cur { background: var(--clay); color: #fff; border-color: #fff; transform: scale(1.08); } .lx-node.done { background: var(--olive); color: #fff; }
.lx-node:hover, .lx-node:focus-visible { border-color: var(--clay); }
.lx-panel { margin-top: 18px; background: rgba(255,253,249,.94); border-radius: 16px; padding: 22px 24px; box-shadow: 0 10px 30px rgba(30,30,30,.12); scroll-margin-top: 70px; }
.lx-panel h2 { font-family: var(--serif); font-size: 26px; margin: 0 0 8px; }
.lx-note { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 14px; } .lx-note h3 { margin: 0 0 6px; font-size: 17px; }
.lx-level { margin-top: 16px; scroll-margin-top: 70px; } .lx-level h3 { display: flex; gap: 10px; align-items: center; margin: 0 0 4px; font-size: 16px; } .lx-level h3 span { font-family: var(--serif); color: var(--clay); font-size: 20px; }
.lx-ln { display: flex; gap: 10px; align-items: center; width: 100%; text-decoration: none; padding: 2px 0; } .lx-ln .t { flex: 1; }
.lx-tiles { margin-top: 18px; display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; }
.lx-tile { background: rgba(255,253,249,.92); border-radius: 16px; padding: 18px 18px 16px; box-shadow: 0 8px 24px rgba(30,30,30,.1); display: flex; flex-direction: column; gap: 6px; } .lx-tile.wide { grid-column: 1 / -1; }
.lx-tile h3 { margin: 0; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); } .lx-tile p { margin: 0; }
.lx-more { color: var(--clay-d); font-weight: 600; text-decoration: none; margin-top: auto; } .lx-more:hover { text-decoration: underline; }
/* thay style noi dong cu (CSP) */
.el-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; align-items: start; }
.el-pad { padding: 20px; } .el-op { opacity: .8; } .el-mt { margin-top: 12px; } .el-m0 { margin: 0; } .el-fbp { margin: 0 0 6px; } .el-dim { opacity: .55; }
@media (max-width: 900px) {
  .ex-split, .cx-frame { grid-template-columns: 1fr; } .ex-split.rev .ex-copy { order: 0; }
  .lx-grid { grid-template-columns: 1fr; } .lx-rail { flex-direction: row; justify-content: center; flex-wrap: wrap; } .lx-arrow { display: none; }
  .lx-node { width: 44px; height: 44px; } .cx-pic { min-height: 340px; } .cx-pic-in { padding: 26px 22px; } .ex-card { padding: 28px 22px; }
}
@media (prefers-reduced-motion: reduce) { .lx-node.cur { transform: none; } }

/* Dot 349: o ap ma voucher */
.lx-vform { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; } .lx-vform label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; font-weight: 600; } .lx-vform input { font: inherit; padding: 10px 12px; border: 1px solid #DDD5CD; border-radius: 6px; min-width: 200px; text-transform: uppercase; }

/* Dot 350: nhan "dang xay dung - van hanh thu nghiem" */
.cx-building { display: inline-block; margin: 0 0 12px; padding: 5px 12px; border-radius: 99px; background: rgba(251,240,218,.92); color: #6E5312; font-size: 12.5px; font-weight: 600; }
.lx-building { margin: 0 0 12px; padding: 10px 16px; border-radius: 12px; background: rgba(251,240,218,.94); color: #5E4710; font-size: 13.5px; line-height: 1.5; box-shadow: 0 6px 18px rgba(30,30,30,.1); }