/* OneCAD Academy — trang học của khách hàng Autodesk (ảnh DT-1…DT-26, anh Tâm duyệt 08/10/2026). Cùng họ màu / chữ với Portal và trang /dung-thu.
   Tên miền Academy chỉ mở được tệp trong public/academy/ nên phông chữ có bản riêng ở /fonts. CSP cấm style nội tuyến: bề rộng thanh tiến độ đặt bằng JS. */
@font-face{font-family:"Be Vietnam Pro";src:url(/fonts/BeVietnamPro-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Be Vietnam Pro";src:url(/fonts/BeVietnamPro-500.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Be Vietnam Pro";src:url(/fonts/BeVietnamPro-600.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Be Vietnam Pro";src:url(/fonts/BeVietnamPro-700.woff2) format("woff2");font-weight:700 900;font-display:swap}
:root{
  --bg:#F3F8FE;--surface:#fff;--ink:#0B1F3D;--muted:#4F627F;--line:#D3DFEF;--hair:#E6EEF8;
  --blue:#0B6BFF;--blue-2:#0665ed;--cyan:#0786C9;--green:#5B9A1B;--teal:#14958A;--navy:#0d2542;--navy-2:#12355d;
  --ok:#167548;--ok-bg:#e8f5ee;--warn:#8a5a00;--warn-bg:#fff5df;--warn-line:#f0d594;--bad:#b42318;--bad-bg:#fdecea;--build-bg:#edf4ff;
  --mono:"SF Mono",ui-monospace,Menlo,Consolas,monospace;--font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",sans-serif;
  --tabbar:64px;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 15px/1.55 var(--font);min-height:100vh;min-height:100dvh}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
h1,h2,h3{letter-spacing:-.01em;line-height:1.2;text-wrap:balance}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer}
img{max-width:100%}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.ic{width:18px;height:18px;flex:none}
.wrap{max-width:1288px;margin-inline:auto;padding-inline:24px}
.wrap.narrow{max-width:640px;padding-top:14px;padding-bottom:40px}
.wrap.pb{padding-bottom:40px}
.sp{flex:1}
.muted{color:var(--muted)}
.mono{font-family:var(--mono)}
.tnum{font-variant-numeric:tabular-nums}
.center{text-align:center}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);border:0;padding:0}
.grad{background:linear-gradient(90deg,var(--cyan),var(--blue) 45%,var(--teal) 80%,var(--green));-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{font:500 12.5px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--cyan);display:flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan)}
.boot{padding:80px 24px;text-align:center;color:var(--muted)}
#app{display:flex;flex-direction:column;min-height:100vh;min-height:100dvh}
#view{flex:1;min-width:0}

/* Thanh trên, thanh thẻ dưới (điện thoại), chân trang */
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.top .wrap{display:flex;align-items:center;gap:14px;height:64px}
.logo{display:flex;align-items:center;gap:12px;font-weight:700;font-size:18px;margin-right:14px;white-space:nowrap}
.logo img{height:34px;width:auto;display:block}
.logo span{padding-left:12px;border-left:1px solid var(--line);line-height:22px}
.tnav{display:flex;gap:2px;align-self:stretch}
.tnav a{display:inline-flex;align-items:center;gap:8px;padding:0 14px;font-size:15px;font-weight:600;color:var(--muted);border-bottom:2.5px solid transparent;border-top:2.5px solid transparent;white-space:nowrap}
.tnav a:hover{color:var(--ink)}
.tnav a.on{color:var(--blue);border-bottom-color:var(--blue)}
.me{display:flex;align-items:center;gap:9px;white-space:nowrap;border-radius:10px;padding:4px 6px;min-width:0}
.me:hover,.me.on{background:var(--bg)}
.me b{display:block;font-size:13.5px;font-weight:600;line-height:1.2;max-width:220px;overflow:hidden;text-overflow:ellipsis}
.me small{display:block;font-size:12px;color:var(--muted);max-width:220px;overflow:hidden;text-overflow:ellipsis}
.me .ic{width:15px;height:15px;color:var(--muted);transform:rotate(90deg)}
.av{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;display:grid;place-items:center;font:700 13px var(--font);font-style:normal;flex:none}
.tabbar{display:none}
.foot{font-size:13px;color:var(--muted)}
.foot .wrap{display:flex;gap:18px;align-items:center;padding-block:26px 34px;flex-wrap:wrap}
.foot a:hover{color:var(--blue)}

/* Nút, nhãn, thẻ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);font-weight:600;font-size:15px;white-space:nowrap;cursor:pointer}
.btn:hover{border-color:#b9cbe3}
.btn.primary{border:0;background:linear-gradient(90deg,var(--cyan),var(--blue));color:#fff;box-shadow:0 0 0 1px rgba(82,217,255,.4),0 10px 24px -10px rgba(11,107,255,.6)}
.btn.primary:hover{filter:brightness(1.06)}
.btn.lg{min-height:50px;padding:0 24px;font-size:16px;font-weight:700}
.btn.sm{min-height:36px;padding:0 12px;font-size:13.5px;border-radius:9px}
.btn.sm .ic{width:16px;height:16px}
.btn.full{display:flex;width:100%}
.btn.ghost{background:transparent;border-color:#ffffff40;color:#fff}
.btn.ghost:hover{border-color:#ffffff80}
.btn:disabled,.btn.off{opacity:.55;cursor:default;filter:none}
.btn.primary .ic:first-child{fill:none}
.lnk{border:0;background:none;padding:0;color:inherit;text-decoration:underline;font-weight:600}
.pill{display:inline-flex;align-items:center;gap:5px;border-radius:999px;padding:2px 10px;font-size:12px;font-weight:700;line-height:20px;white-space:nowrap;background:var(--hair);color:var(--muted)}
.pill .ic{width:13px;height:13px}
.pill.ok{background:var(--ok-bg);color:var(--ok)}.pill.warn{background:var(--warn-bg);color:var(--warn)}.pill.blue{background:var(--build-bg);color:var(--blue-2)}
.lic{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;color:var(--ok);background:var(--ok-bg);border-radius:8px;padding:4px 9px;line-height:1.35}
.lic .ic{width:14px;height:14px}
.lic.try{background:var(--build-bg);color:var(--blue-2)}
.lic.seat{background:var(--warn-bg);color:var(--warn)}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;min-width:0}
a.card:hover{border-color:#b9cbe3;box-shadow:0 14px 30px -22px rgba(11,107,255,.55)}
.card.blank{display:flex;gap:14px;align-items:center;color:var(--muted);font-size:14px}
.card.blank>.ic{width:26px;height:26px;color:var(--blue)}
.card.blank b{display:block;color:var(--ink);font-size:15.5px}
.card.blank .btn{margin-left:auto}
.sec{padding-top:36px}
.sec-head{display:flex;align-items:flex-end;gap:12px;margin-bottom:16px}
.sec-head h2{font-size:22px;font-weight:700}
.sec-head p{font-size:14px;color:var(--muted);margin-top:3px}
.more{display:inline-flex;align-items:center;gap:5px;font-weight:600;font-size:14.5px;color:var(--blue);white-space:nowrap}
.more .ic{width:16px;height:16px}
.bar{display:block;height:8px;border-radius:99px;background:var(--hair);overflow:hidden}
.bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--cyan),var(--blue))}
.grid-bg{position:relative;isolation:isolate;overflow:hidden}
.grid-bg::before{content:"";position:absolute;inset:0;z-index:-1;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:48px 48px;opacity:.7;-webkit-mask-image:radial-gradient(ellipse 80% 90% at 40% 20%,#000,transparent 78%);mask-image:radial-gradient(ellipse 80% 90% at 40% 20%,#000,transparent 78%)}
.grid-bg::after{content:"";position:absolute;z-index:-1;width:900px;height:520px;left:-200px;top:-220px;background:radial-gradient(closest-side,rgba(11,107,255,.16),transparent)}

/* Thẻ cấp trang kiểu gạch chân (chuẩn Portal: 15px / 600 / cao 48 / gạch 2.5 / icon 18) và công tắc nhỏ */
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin-bottom:18px;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tabs a{min-height:48px;padding:0 14px;font-weight:600;font-size:15px;color:var(--muted);border-bottom:2.5px solid transparent;white-space:nowrap;display:inline-flex;gap:8px;align-items:center}
.tabs a:hover{color:var(--ink)}
.tabs a.on{color:var(--blue);border-bottom-color:var(--blue)}
.tabs .cnt{min-width:22px;height:22px;border-radius:11px;background:var(--hair);color:var(--muted);font-size:12.5px;font-weight:700;display:inline-grid;place-items:center;padding:0 7px}
.tabs a.on .cnt{background:rgba(11,107,255,.1);color:var(--blue)}
.seg-ctl{display:inline-flex;background:var(--hair);border-radius:9px;padding:3px;gap:2px;max-width:100%}
.seg-ctl button,.seg-ctl a{border:0;background:none;font-size:14.5px;font-weight:600;color:var(--muted);padding:7px 14px;border-radius:7px;display:inline-flex;gap:7px;align-items:center;justify-content:center;white-space:nowrap}
.seg-ctl .on{background:#fff;color:var(--ink);box-shadow:0 1px 2px rgba(13,37,66,.12)}
.seg-ctl .ic{width:16px;height:16px}
.seg-ctl.two{display:grid;grid-template-columns:1fr 1fr;margin:6px 0 14px}

/* Ảnh bìa khoá học: nền kỹ thuật + hình nét, màu theo sản phẩm; ô sản phẩm = ô màu + mã chữ */
.p-acad{--c:#D9482B}.p-rvt{--c:#0B6BFF}.p-c3d{--c:#14958A}.p-inv{--c:#C77700}.p-fus{--c:#E8590C}.p-max{--c:#0786C9}.p-nav{--c:#5B9A1B}.p-docs{--c:#6941c6}.p-ast{--c:#2F5BD3}.p-rsa{--c:#C8102E}.p-rcp{--c:#8E2C8A}.p-iw{--c:#A3237E}.p-bcp{--c:#2B59C3}.p-bld{--c:#0E7C86}.p-x{--c:#4F627F}
.th{display:block;position:relative;aspect-ratio:16/9;border-radius:10px;overflow:hidden;color:#fff;
  background:linear-gradient(#ffffff12 1px,transparent 1px) 0 0/22px 22px,linear-gradient(90deg,#ffffff12 1px,transparent 1px) 0 0/22px 22px,linear-gradient(135deg,var(--navy) 10%,color-mix(in srgb,var(--c) 78%,var(--navy)))}
.th .art{position:absolute;right:6%;top:50%;transform:translateY(-50%);height:74%;width:auto;opacity:.55}
.th .cv{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.th .code,.chero .code{font:700 11.5px var(--mono);letter-spacing:.08em;padding:3px 8px;border-radius:6px;background:var(--c);color:#fff;box-shadow:0 0 0 1px #ffffff40}
.th .code{position:absolute;left:12px;top:12px}
.th .dur{position:absolute;right:10px;bottom:10px;font:600 12px var(--font);padding:2px 8px;border-radius:6px;background:#0b1f3dcc;color:#fff;display:inline-flex;gap:5px;align-items:center}
.th .dur .ic{width:13px;height:13px}
.th .playb{position:absolute;left:50%;top:50%;width:56px;height:56px;margin:-28px 0 0 -28px;border-radius:50%;background:#fff;color:var(--blue);display:grid;place-items:center;box-shadow:0 10px 30px -8px #000a}
.th .playb .ic{width:24px;height:24px;fill:currentColor;margin-left:3px}
.th .prog{position:absolute;left:0;right:0;bottom:0;height:5px;background:#ffffff30}
.th .prog i{display:block;height:100%;background:#52d9ff}
.ptile{width:44px;height:44px;border-radius:11px;background:var(--c);color:#fff;display:grid;place-items:center;font:700 11.5px var(--mono);font-style:normal;letter-spacing:.04em;flex:none}

/* Dải nhắc hết hạn (DT-25) */
.nbar{background:var(--warn-bg);border-bottom:1px solid var(--warn-line);color:#5c3d00;font-size:14.5px}
.nbar .wrap{display:flex;gap:14px;align-items:center;padding-block:11px}
.nbar .ic{width:20px;height:20px;color:var(--warn)}
.nbar p{flex:1;min-width:0}
.nbar b{color:var(--ink)}
.nbar .days{flex:none;font-weight:800;font-size:14px;background:#fff;border:1px solid var(--warn-line);border-radius:9px;padding:4px 10px;color:var(--warn);white-space:nowrap}
.nbar .btn .ic{width:16px;height:16px;color:inherit}

/* DT-1 Trang chủ học */
.hero{padding:40px 0 34px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:48px;align-items:center}
.hero h1{font-size:42px;font-weight:800;margin:14px 0 10px;line-height:1.12;text-wrap:wrap}
.hero .lead{font-size:17px;color:var(--muted);max-width:60ch}
.licbox{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:0 0 0 1px rgba(82,217,255,.12),0 30px 70px -40px rgba(11,107,255,.5)}
.licbox h2{font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px}
.licbox h2 .ic{color:var(--ok)}
.licbox li{display:flex;align-items:center;gap:12px;padding:11px 0;border-top:1px solid var(--hair)}
.licbox li:first-of-type{border-top:0;margin-top:6px}
.licbox li div{min-width:0}
.licbox li b{display:block;font-size:15px;font-weight:600;line-height:1.3}
.licbox li small{font-size:13px;color:var(--muted)}
.licbox li em{margin-left:auto;font-style:normal;font-weight:700;font-size:14px;color:var(--blue);white-space:nowrap}
.licbox li em.warn{color:var(--warn);font-size:12.5px}
.licbox li em.off{color:var(--muted);font-size:12.5px}
.licbox .foot,.licbox .none{margin-top:8px;padding-top:12px;border-top:1px solid var(--hair);font-size:13px;color:var(--muted)}
.licbox .foot b{color:var(--ink)}
.cont{display:grid;grid-template-columns:minmax(0,1.9fr) minmax(0,1fr) minmax(0,1fr);gap:18px}
.cont.n2{grid-template-columns:minmax(0,1.9fr) minmax(0,1fr)}
.cont.n1{grid-template-columns:minmax(0,1fr)}
.cont .big{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:22px;align-items:stretch;padding:12px}
.cont.n1 .big{grid-template-columns:minmax(0,420px) minmax(0,1fr)}
.cont .big .th{aspect-ratio:auto;height:100%;min-height:260px}
.cont .big .th .art{height:auto;width:62%;right:50%;transform:translate(50%,-50%)}
.cont .big>div{align-self:center;padding-right:8px}
.cont h3{font-size:16px;font-weight:700;margin:12px 0 2px;line-height:1.3}
.cont .big h3{font-size:20px}
.cont h3 a:hover{color:var(--blue)}
.cont .now{font-size:14px;color:var(--muted)}
.cont .now b{color:var(--ink);font-weight:600}
.cont .small{display:flex;flex-direction:column;padding:12px 12px 16px}
.cont .small h3,.cont .small .now,.cont .small .pr{margin-inline:4px}
.cont .small .btn{margin:auto 4px 0;align-self:flex-start}
.pr{display:flex;align-items:center;gap:10px;margin:12px 0 14px;font-size:13.5px;font-weight:600}
.pr .bar{flex:1}
/* Khoá học theo chuyên ngành (ảnh DT-77): nút lọc chuyên ngành + nhóm có tiêu đề màu + ô icon chính hãng (DT-76) */
.g-xd{--g:#0B6BFF}.g-ht{--g:#14958A}.g-ck{--g:#E8590C}.g-cl{--g:#6941c6}
.pfield{margin-bottom:24px}
.fchips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.fchip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px 7px 10px;font:600 14px var(--font);color:var(--ink);cursor:pointer}
.fchip i{width:10px;height:10px;border-radius:50%;background:var(--g)}
.fchip span{font:500 12px var(--mono);color:var(--muted)}
.fchip:hover{border-color:var(--g,var(--navy))}
.fchip.on{background:var(--g,var(--navy));border-color:var(--g,var(--navy));color:#fff}
.fchip.on i{background:#fff}.fchip.on span{color:#ffffffc0}
.fchip:not(.g-xd):not(.g-ht):not(.g-ck):not(.g-cl){padding-left:14px}
.pgrps{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));grid-auto-flow:row dense;gap:22px 12px}
.pgrp{min-width:0}.pgrp[hidden]{display:none}
.pgrp.n-1{grid-column:span 1}.pgrp.n-2{grid-column:span 2}.pgrp.n-3{grid-column:span 3}.pgrp.n-4{grid-column:span 4}.pgrp.n-5{grid-column:span 5}.pgrp.n-6{grid-column:span 6}.pgrp.n-7{grid-column:span 7}
.pgrp-h{display:flex;align-items:baseline;gap:8px;padding-bottom:8px;margin-bottom:10px;border-bottom:2px solid var(--g)}
.pgrp-h b{font-size:15.5px;font-weight:700;color:var(--g);white-space:nowrap}
.pgrp-h small{color:var(--muted);font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.pgrp-h em{margin-left:auto;font:500 11.5px var(--mono);font-style:normal;color:var(--muted);white-space:nowrap}
.pcards{display:grid;gap:12px}
.n-1 .pcards{grid-template-columns:minmax(0,1fr)}.n-2 .pcards{grid-template-columns:repeat(2,minmax(0,1fr))}.n-3 .pcards{grid-template-columns:repeat(3,minmax(0,1fr))}
.n-4 .pcards{grid-template-columns:repeat(4,minmax(0,1fr))}.n-5 .pcards{grid-template-columns:repeat(5,minmax(0,1fr))}.n-6 .pcards{grid-template-columns:repeat(6,minmax(0,1fr))}.n-7 .pcards{grid-template-columns:repeat(7,minmax(0,1fr))}
/* màu nền ô = màu chính của icon */
.pcard.p-rvt,.pcard.p-nav,.pcard.p-ast,.pcard.p-docs,.pcard.p-bcp,.pcard.p-bld{--ic:#186bff}.pcard.p-acad,.pcard.p-rsa{--ic:#e51050}
.pcard.p-c3d,.pcard.p-iw,.pcard.p-rcp{--ic:#a90c7c}.pcard.p-inv{--ic:#dbae03}.pcard.p-fus{--ic:#ff6b00}.pcard.p-max{--ic:#37a5cc}
.pcard{--ic:#4F627F;position:relative;background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px 8px 12px;display:flex;flex-direction:column;gap:9px;min-width:0;transition:border-color .15s,box-shadow .15s}
.pcard:hover{border-color:var(--ic);box-shadow:0 8px 22px -12px var(--ic)}
.pcard .pth{aspect-ratio:16/11;border-radius:8px;display:grid;place-items:center;overflow:hidden;
  background:linear-gradient(color-mix(in srgb,var(--ic) 10%,transparent) 1px,transparent 1px) 0 0/16px 16px,
             linear-gradient(90deg,color-mix(in srgb,var(--ic) 10%,transparent) 1px,transparent 1px) 0 0/16px 16px,
             radial-gradient(circle at 50% 42%,#fff 0,color-mix(in srgb,var(--ic) 16%,#fff) 80%)}
.pcard .pth img{height:64%;width:auto;filter:drop-shadow(0 6px 10px color-mix(in srgb,var(--ic) 38%,transparent));transition:transform .2s}
.pcard:hover .pth img{transform:translateY(-3px) scale(1.05)}
.pcard .pth .ptile{width:52px;height:52px}
.pcard b{font-size:14px;font-weight:600;line-height:1.25;padding-inline:4px}
.pcard small{font-size:12.5px;color:var(--muted);padding-inline:4px;margin-top:-6px}
.pcard.has small{color:var(--ok);font-weight:500}
.pcard.none .pth img{opacity:.9}
.pcard .own{position:absolute;right:14px;top:14px;width:20px;height:20px;border-radius:50%;background:var(--ok);color:#fff;display:grid;place-items:center}
.pcard .own .ic{width:12px;height:12px;stroke-width:3}
.try-t{position:absolute;right:14px;top:14px;font-size:11px;font-weight:700;color:var(--blue-2);background:var(--build-bg);border-radius:6px;padding:1px 6px}
.courses{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.course{padding:12px 12px 16px;display:flex;flex-direction:column}
.course h3{font-size:16px;font-weight:700;margin:12px 4px 4px;line-height:1.3;min-height:42px}
.course .meta{display:flex;flex-wrap:wrap;gap:4px 10px;font-size:12.5px;color:var(--muted);margin:0 4px 10px}
.course .meta span{display:inline-flex;gap:5px;align-items:center;white-space:nowrap}
.course .meta .ic{width:14px;height:14px}
.course .lic{margin:auto 4px 0;align-self:flex-start;font-size:12px}

/* DT-24 Danh sách khoá học + đầu trang Việc học của tôi */
.mhead{padding:30px 0 0;border-bottom:1px solid var(--line)}
.mhead h1{font-size:32px;font-weight:800;margin:10px 0 18px}
.mhead .tabs{margin-bottom:0;border-bottom:0}
.bigsearch{display:flex;align-items:center;gap:12px;height:58px;max-width:790px;margin-bottom:18px;padding:0 8px 0 18px;border-radius:14px;background:#fff;border:1px solid var(--line);box-shadow:0 0 0 1px rgba(82,217,255,.14),0 24px 50px -30px rgba(11,107,255,.5)}
.bigsearch:focus-within{border-color:var(--blue)}
.bigsearch .ic{width:22px;height:22px;color:var(--blue)}
.bigsearch input{flex:1;min-width:0;border:0;background:none;outline:0;font-size:16px;height:100%}
.bigsearch .btn{min-height:42px}
.filt{display:flex;align-items:center;gap:12px;margin-top:16px;flex-wrap:wrap}
.filt .fl{font-size:13px;font-weight:700;color:var(--muted);width:76px}
.filt .hint{font-size:13px;color:var(--muted)}
.chips{display:flex;gap:8px;flex-wrap:wrap;flex:1;min-width:0}
.chips button{display:inline-flex;gap:7px;align-items:center;height:38px;padding:0 12px 0 5px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:14px;font-weight:600;white-space:nowrap}
.chips button.all{padding:0 14px}
.chips button.on{border-color:var(--blue);background:var(--build-bg);color:var(--blue-2)}
.chips .ptile{width:28px;height:28px;border-radius:7px;font-size:8.5px}
.chips .ic{width:14px;height:14px;color:var(--ok);stroke-width:3}
.results{padding:26px 0 40px;transition:opacity .15s}
.results.dim{opacity:.55}
.results .courses+.sec-head{margin-top:34px}
.results .count{margin-top:22px;font-size:13px;color:var(--muted);text-align:right}

/* DT-2 / DT-8 / DT-25 Trang một khoá */
.chero{background:linear-gradient(#ffffff0e 1px,transparent 1px) 0 0/24px 24px,linear-gradient(90deg,#ffffff0e 1px,transparent 1px) 0 0/24px 24px,linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;padding:26px 0 34px}
.chero .wrap{display:grid;grid-template-columns:minmax(0,1fr) 440px;gap:48px;align-items:center}
.crumb{display:flex;gap:6px;align-items:center;font-size:13.5px;font-weight:600;color:#9fb2ca;margin-bottom:16px;flex-wrap:wrap}
.crumb a:hover{color:#fff}
.crumb .ic{width:13px;height:13px}
.crumb b{color:#fff;font-weight:600}
.chero .code{display:inline-block;font-size:12px;padding:4px 9px}
.chero h1{font-size:36px;font-weight:800;margin:12px 0 10px}
.chero .lead{font-size:16.5px;color:#c4d2e6;max-width:62ch}
.cmeta{display:flex;flex-wrap:wrap;gap:8px 20px;margin:18px 0;font-size:14.5px;color:#dbe5f1}
.cmeta span{display:inline-flex;gap:7px;align-items:center;white-space:nowrap}
.cmeta .ic{color:#8fd3ff}
.chero .lic{background:#16754833;color:#8ee0b8;box-shadow:inset 0 0 0 1px #8ee0b855;font-size:13.5px;padding:6px 11px}
.chero .lic.trial{background:#0b6bff33;color:#bcdcff;box-shadow:inset 0 0 0 1px #8fd3ff66}
.chero .lic.grace,.chero .lic.seatd{background:#f59e0b2e;color:#fde68a;box-shadow:inset 0 0 0 1px #fbbf2477}
.cgo{display:flex;align-items:center;gap:18px;margin-top:22px;flex-wrap:wrap}
.cgo .pr{flex:1;min-width:220px;max-width:340px;margin:0;color:#dbe5f1;display:block;font-weight:500}
.cgo .pr .bar{background:#ffffff22;margin-top:7px}
.cgo .pr b{color:#fff}
.chero .th{border-radius:14px;box-shadow:0 30px 60px -30px #000c,0 0 0 1px #ffffff26}
.chero .th .code{display:none}
.chero .th .cap{position:absolute;left:14px;bottom:14px;font-size:13px;font-weight:600;background:#0b1f3dcc;padding:4px 10px;border-radius:7px}
.cbody{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:28px;padding-top:8px;padding-bottom:40px;align-items:start}
.legend{display:flex;gap:16px;font-size:13px;color:var(--muted);align-items:center;flex-wrap:wrap;margin-bottom:12px}
.legend span{display:inline-flex;gap:6px;align-items:center;white-space:nowrap}
.ty{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:var(--build-bg);color:var(--blue-2);flex:none;font-style:normal}
.ty.read{background:#e6f6f4;color:var(--teal)}.ty.slide{background:#fff5df;color:#8a5a00}.ty.embed{background:var(--bad-bg);color:var(--bad)}
.legend .ty{width:24px;height:24px;border-radius:7px}
.legend .ty .ic{width:14px;height:14px}
.chap{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:12px;overflow:hidden}
.chap-h{display:flex;align-items:center;gap:12px;padding:14px 16px;width:100%;border:0;background:none;text-align:left}
.chap-h:hover{background:#fafcff}
.chap-h .no{width:30px;height:30px;border-radius:9px;background:var(--build-bg);color:var(--blue-2);display:grid;place-items:center;font-weight:700;font-size:14px;flex:none}
.chap-h h3{font-size:16px;font-weight:700;min-width:0}
.chap-h small{font-size:13px;color:var(--muted);white-space:nowrap}
.chap-h>.ic{color:var(--muted);transition:transform .15s}
.chap.open .chap-h{border-bottom:1px solid var(--hair);background:#fafcff}
.chap.open .chap-h>.ic{transform:rotate(90deg)}
.chap.lockc .chap-h h3{color:#7b8ba3}
.chap.lockc .no{background:var(--hair);color:#7b8ba3}
.les{display:grid;grid-template-columns:24px 34px minmax(0,1fr) auto auto;gap:12px;align-items:center;padding:10px 16px;border-top:1px solid var(--hair);font-size:14.5px}
.les.pv{grid-template-columns:24px 34px minmax(0,1fr) auto auto 96px}
.les:first-child{border-top:0}
a.les:hover{background:#f7faff}
.les .st{width:22px;height:22px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;color:#fff}
.les.done .st{background:var(--ok);border-color:var(--ok)}
.les.done .st .ic{width:13px;height:13px;stroke-width:3}
.les.cur{background:#f3f8ff;box-shadow:inset 3px 0 var(--blue)}
.les.cur .st{border-color:var(--blue);box-shadow:0 0 0 3px rgba(11,107,255,.18)}
.les.cur .t{font-weight:600}
.les .t small{display:block;font-size:12.5px;color:var(--blue);font-weight:600}
.les .src{font-size:12.5px;color:var(--muted);white-space:nowrap}
.les .d{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap;min-width:52px;text-align:right}
.les .pill{justify-self:end}
.les.lock{color:#7b8ba3}
.les.lock .st{border:0;color:#9fb2ca}
.les.lock .st .ic{width:16px;height:16px}
.les.lock .ty{filter:grayscale(1);opacity:.6}
.trialbar{display:flex;gap:12px;align-items:center;background:var(--build-bg);border:1px solid #bcd4f7;border-radius:12px;padding:12px 14px;margin-bottom:14px;color:var(--blue-2)}
.trialbar>.ic{width:22px;height:22px}
.trialbar b{display:block;color:var(--ink);font-size:15px}
.trialbar div span{font-size:13.5px;color:var(--muted)}
.trialbar .seen{font-size:13px;font-weight:700;white-space:nowrap}
.side h3{font-size:16px;font-weight:700;margin-bottom:12px}
.side .card,.pane .card{margin-bottom:16px}
.pane .card h3{font-size:16px;font-weight:700;margin-bottom:12px}
.t0{font-size:14.5px;color:var(--muted)}
.learn li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;padding:5px 0}
.learn .ic{color:var(--ok);margin-top:3px}
.learn.pre .ic{color:var(--blue-2)}
.teacher{display:flex;gap:14px;align-items:center}
.teacher .av{width:56px;height:56px;font-size:18px}
.teacher b{font-size:15.5px;display:block}
.teacher small{font-size:13.5px;color:var(--muted)}
.side p.t,.contact p.t{font-size:14px;color:var(--muted);margin:-4px 0 12px}
.contact{border-color:var(--blue);box-shadow:0 0 0 3px rgba(11,107,255,.1)}
.contact h3{display:flex;gap:9px;align-items:center}
.contact h3 .ic{color:var(--blue)}
.contact.seat{border-color:var(--warn-line);box-shadow:0 0 0 3px #f59e0b1f}
.contact.seat h3 .ic{color:var(--warn)}
.who2{display:flex;gap:10px;align-items:center;border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:10px;font-size:14px}
.who2 b{display:block}
.who2 small{color:var(--muted);font-size:12.5px}
.who2 .av{width:34px;height:34px;font-size:12px}
.acts{display:grid;gap:8px}
.acts.r{display:flex;justify-content:flex-end}
.sent{display:flex;gap:10px;align-items:flex-start;background:var(--ok-bg);border-radius:10px;padding:11px 13px;font-size:14px;color:#0f5132}
.sent .ic{color:var(--ok);margin-top:2px}
.msticky{display:none}

/* Ô nhập */
.fld{display:block;margin-bottom:10px}
.fld>span{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin-bottom:4px}
.inp{display:flex;align-items:center;min-height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:0 12px;font-size:14.5px}
.inp:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px rgba(11,107,255,.14)}
.inp input,.inp textarea,.dinp input{flex:1;min-width:0;width:100%;border:0;background:none;outline:0;padding:0;min-height:42px}
.inp.area{align-items:flex-start;padding:10px 12px}
.inp.area textarea{min-height:60px;resize:vertical;line-height:1.5}
.inp.ro{background:var(--bg);color:var(--muted)}
.eye{border:0;background:none;padding:6px;margin-right:-6px;color:var(--muted);display:grid;place-items:center;border-radius:8px}
.eye.on{color:var(--blue)}
.fld2{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:10px}
.fld2 .inp{font-size:13.5px;padding:0 10px}
.fine2{font-size:12.5px;color:var(--muted);margin-top:10px;text-align:center}
.fnote{display:flex;gap:8px;align-items:flex-start;font-size:13.5px;line-height:1.45;margin:10px 0;color:var(--bad)}
.fnote .ic{margin-top:1px;width:16px;height:16px}
.fnote.ok{color:var(--ok)}
.rules{display:flex;flex-wrap:wrap;gap:6px 14px;margin-top:8px;font-size:12.5px;color:#8fa1b9}
.rules li{display:inline-flex;gap:5px;align-items:center;white-space:nowrap}
.rules .ic{width:14px;height:14px}
.rules .ok{color:#7ee2b8}
.rules.lt{color:var(--muted);margin:-2px 0 12px}.rules.lt .ok{color:var(--ok)}
.agree{display:flex;gap:9px;align-items:flex-start;font-size:13px;color:#a9bbd8;margin-top:14px;cursor:pointer}
.agree a{color:#cfe1ff;text-decoration:underline}
.agree.l{color:var(--ink);margin:0;font-size:14px;align-items:center}
.agree input{width:20px;height:20px;accent-color:#0a5bd3;flex:none;margin:0}

/* DT-3 Màn học bài */
.lbar{background:var(--navy);color:#fff;position:sticky;top:0;z-index:20}
.lbar .in{display:flex;align-items:center;gap:16px;height:60px;padding:0 20px}
.lbar .mark{height:28px;width:28px;border-radius:7px;background:#fff;padding:3px;flex:none;display:block}
.lbar .mark img{display:block;width:100%;height:100%;object-fit:contain}
.lbar .back{display:inline-flex;gap:8px;align-items:center;font-weight:600;font-size:15px;min-width:0}
.lbar .back span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lbar .back .ic{transform:rotate(180deg)}
.lbar .lp{display:flex;align-items:center;gap:10px;font-size:13.5px;color:#c4d2e6;white-space:nowrap}
.lbar .lp .bar{width:180px;background:#ffffff22}
.lbar .btn{min-height:38px;font-size:14px;padding:0 14px}
.lbar .btn:not(.primary){background:transparent;border-color:#ffffff40;color:#fff}
.lbar .mcount{display:none;font-size:13px;color:#c4d2e6;font-weight:600;white-space:nowrap}
.learnwrap{display:grid;grid-template-columns:minmax(0,1fr) 400px;align-items:start}
.lmain{padding:20px 24px 40px;min-width:0}
.pvnote{display:flex;gap:9px;align-items:center;background:var(--build-bg);border:1px solid #bcd4f7;border-radius:10px;padding:8px 12px;margin-bottom:14px;font-size:13.5px;color:var(--muted)}
.pvnote .ic{color:var(--blue-2)}
.pvnote a{color:var(--blue);font-weight:600}
.player{position:relative;aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:#0a1b33}
.player iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.pdfbox{border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden}
.pdfh{display:flex;gap:12px;align-items:center;padding:10px 12px 10px 16px;border-bottom:1px solid var(--hair);font-size:14.5px}
.pdfh>.ic{color:var(--blue-2)}
.pdfh span{min-width:0}
.pdfh b{display:block;font-weight:600;line-height:1.3;overflow-wrap:anywhere}
.pdfh small{font-size:12.5px;color:var(--muted)}
.pdfv{height:min(78vh,900px);min-height:420px;background:#eef2f7;display:grid}
.pdfv iframe{width:100%;height:100%;border:0}
.slidebox{display:flex;gap:16px;align-items:center;border:1px solid var(--line);border-radius:14px;background:#fff;padding:22px;flex-wrap:wrap}
.slidebox .ty{width:52px;height:52px;border-radius:12px}
.slidebox .ty .ic{width:26px;height:26px}
.slidebox div{flex:1;min-width:220px}
.slidebox b{display:block;font-size:16px;overflow-wrap:anywhere}
.slidebox small,.slidebox p{font-size:13.5px;color:var(--muted)}
.prose{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px 32px;font-size:16px;line-height:1.7;overflow-wrap:break-word}
.prose>*+*{margin-top:.9em}
.prose h2{font-size:22px;font-weight:700;margin-top:1.4em}
.prose h3{font-size:18px;font-weight:700;margin-top:1.3em}
.prose h4{font-size:16px;font-weight:700;margin:1.2em 0 0}
.prose>:first-child{margin-top:0}
.prose ul,.prose ol{padding-left:1.4em}
.prose ul{list-style:disc}.prose ol{list-style:decimal}
.prose li+li{margin-top:.3em}
.prose a{color:var(--blue);text-decoration:underline}
.prose img{display:block;height:auto;border-radius:10px;border:1px solid var(--line);margin-inline:auto}
.prose blockquote{margin-inline:0;padding:10px 16px;border-left:3px solid var(--blue);background:var(--build-bg);border-radius:0 10px 10px 0}
.prose code,.prose kbd{font:500 .9em var(--mono);background:var(--hair);border-radius:5px;padding:1px 5px}
.prose kbd{border:1px solid var(--line);background:#fff}
.prose pre{background:var(--navy);color:#e6eefc;border-radius:10px;padding:14px 16px;overflow-x:auto}
.prose pre code{background:none;padding:0;color:inherit}
.prose table{border-collapse:collapse;width:100%;display:block;overflow-x:auto;font-size:14.5px}
.prose th,.prose td{border:1px solid var(--line);padding:7px 10px;text-align:left;vertical-align:top}
.prose th{background:var(--bg);font-weight:600}
.prose hr{border:0;border-top:1px solid var(--line)}
.ltitle{display:flex;align-items:flex-start;gap:16px;margin:18px 0 6px}
.ltitle h1{font-size:25px;font-weight:700}
.ltitle p{font-size:14.5px;color:var(--muted);margin-top:4px;display:flex;gap:6px 14px;flex-wrap:wrap}
.ltitle p span{display:inline-flex;gap:6px;align-items:center}
.ltitle p .ic{width:15px;height:15px}
.btn.mark{flex:none}
.btn.mark.on{background:var(--ok-bg);border-color:#b5dcc6;color:var(--ok)}
.mnav{display:none}
/* Bài video tự quay (DT-53): đường dẫn khoá › chương + tên bài trên khung phát, hàng nút dưới khung; trình phát: /player.css */
.ltitle.vtitle{margin:0 0 14px}
.ltitle .vcrumb{display:flex;align-items:center;gap:6px;flex-wrap:wrap;font-size:14px;color:var(--muted);margin:0 0 6px}
.vcrumb a{color:var(--muted);font-weight:600}
.vcrumb a:hover{color:var(--blue)}
.vcrumb .ic{width:14px;height:14px}
.ltitle.vtitle p .vmch{display:none}
.vnav{display:flex;align-items:center;gap:10px;margin-top:14px;flex-wrap:wrap}
.vnav .vhint{flex:1;text-align:right;font-size:13.5px;color:var(--muted);min-width:160px}
.vnav .btn.primary:last-child{display:none}
.mnav.off{display:none!important}
.deskatt{margin-top:16px;max-width:620px}
.card h3.h{font-size:16px;font-weight:700;display:flex;gap:9px;align-items:center;margin-bottom:10px}
.card h3.h .ic{color:var(--blue)}
.card h3.h .cnt{margin-left:auto;font-size:12.5px;font-weight:700;color:var(--muted);background:var(--hair);border-radius:11px;padding:1px 9px}
.att li{display:flex;gap:12px;align-items:center;padding:9px 0;border-top:1px solid var(--hair);font-size:14.5px}
.att li:first-child{border-top:0}
.att .ty{width:36px;height:36px}
.att div{min-width:0}
.att b{display:block;font-weight:600;line-height:1.3;overflow-wrap:anywhere}
.att small{font-size:12.5px;color:var(--muted)}
.att .dl{margin-left:auto;width:36px;height:36px;border-radius:9px;border:1px solid var(--line);display:grid;place-items:center;flex:none}
.att .dl:hover{border-color:var(--blue);color:var(--blue)}
.lside{background:#fff;border-left:1px solid var(--line);position:sticky;top:60px;height:calc(100vh - 60px);overflow-y:auto;display:flex;flex-direction:column}
.lside .hd{display:flex;align-items:center;gap:10px;padding:16px 18px 10px}
.lside .hd h2{font-size:16px;font-weight:700}
.lside .hd small{margin-left:auto;font-size:13px;color:var(--muted)}
.mtabs{display:none}
.lside .tpane:not(.attp)[hidden]{display:block!important}
.lside .attp{display:none!important}
.toc .ch{display:flex;align-items:center;gap:10px;padding:11px 18px;font-weight:600;font-size:14.5px;border:0;border-top:1px solid var(--hair);background:none;width:100%;text-align:left}
.toc .ch:hover{background:#fafcff}
.toc .ch span{min-width:0}
.toc .ch small{margin-left:auto;font-weight:500;font-size:12.5px;color:var(--muted);white-space:nowrap;display:inline-flex;gap:4px;align-items:center}
.toc .ch .ic{width:15px;height:15px;color:var(--muted);transition:transform .15s}
.toc .ch.open>.ic{transform:rotate(90deg)}
.toc .ch.fin small{color:var(--ok);font-weight:700}
.toc .ch.lk{color:#7b8ba3}
.toc .l{display:grid;grid-template-columns:22px 18px minmax(0,1fr) auto;gap:10px;align-items:center;padding:8px 18px 8px 22px;font-size:14px}
.toc a.l:hover{background:#f7faff}
.toc .l .st{width:20px;height:20px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;color:#fff}
.toc .l.done .st{background:var(--ok);border-color:var(--ok)}
.toc .l.done .st .ic{width:12px;height:12px;stroke-width:3;color:#fff}
.toc .l>.ic{width:16px;height:16px;color:var(--muted)}
.toc .l small{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.toc .l.cur{background:#f3f8ff;box-shadow:inset 3px 0 var(--blue);font-weight:600}
.toc .l.cur:not(.done) .st{border-color:var(--blue);box-shadow:0 0 0 3px rgba(11,107,255,.18)}
.toc .l.cur>.ic{color:var(--blue)}
.toc .l .tg{font-size:11.5px;font-weight:700;color:var(--blue-2);background:var(--build-bg);border-radius:6px;padding:1px 7px;white-space:nowrap}
.toc .l.lk{color:#7b8ba3}
.toc .l.lk .st{border:0;color:#9fb2ca}
.toc .l.lk .st .ic{width:15px;height:15px}

/* DT-5 Việc học của tôi (bản rút gọn) */
.doing{display:grid;gap:12px}
.drow{display:grid;grid-template-columns:200px minmax(0,1fr) 280px 190px;gap:20px;align-items:center;padding:12px 18px 12px 12px}
.drow h3{font-size:17px;font-weight:700}
.drow h3 a:hover{color:var(--blue)}
.drow .now{font-size:14px;color:var(--muted);margin-top:3px}
.drow .now b{color:var(--ink);font-weight:600}
.drow .pr{margin:0;display:block}
.drow .pr .bar{margin-top:6px}
.drow .pr small{display:block;font-weight:500;color:var(--muted);margin-top:6px;font-size:12.5px}
.drow .btn{width:100%}
.dones{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.done-c{padding:12px 12px 14px;display:flex;flex-direction:column}
.done-c h3{font-size:15.5px;font-weight:700;margin:12px 4px 4px;line-height:1.3;min-height:40px}
.done-c .meta{font-size:13px;color:var(--muted);margin:0 4px 12px}
.done-c .more{margin:auto 4px 0}

/* DT-26 Thẻ Tôi, đổi mật khẩu, điều khoản; phiếu liên hệ ở trang riêng (DT-17a) */
.backrow{display:flex;align-items:center;gap:8px;font-weight:600;font-size:16px;padding:8px 0 12px}
.backrow .ic{width:22px;height:22px;transform:rotate(180deg)}
.backrow span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mme-h{display:flex;gap:12px;align-items:center;margin:8px 0 6px}
.mme-h .av{width:52px;height:52px;font-size:17px}
.mme-h div{min-width:0}
.mme-h b{display:block;font-size:18px;line-height:1.25;overflow-wrap:anywhere}
.mme-h small{font-size:13px;color:var(--muted);overflow-wrap:anywhere}
.mme-h .btn{margin-left:auto;flex:none}
.mme-e{flex:1}
.mme-e .acts{gap:8px;margin-top:2px}
.mgl{font-size:12.5px;font-weight:700;color:var(--muted);margin:16px 0 6px}
.mco,.mlist{background:#fff;border:1px solid var(--line);border-radius:14px}
.mco{padding:12px 14px 4px}
.mco>b{display:block;font-size:15.5px}
.mco>small{font-size:13px;color:var(--muted)}
.mco .none{font-size:13.5px;color:var(--muted);padding:6px 0 10px}
.mco li{display:flex;gap:10px;align-items:center;padding:9px 0;border-top:1px solid var(--hair);font-size:14.5px;font-weight:600}
.mco li:first-child{margin-top:8px}
.mco li small{display:block;font-size:12.5px;color:var(--muted);font-weight:400}
.mco li .pill{margin-left:auto}
.mco .ptile{width:36px;height:36px;font-size:9.5px}
.mrw{display:flex;gap:12px;align-items:center;min-height:50px;padding:0 12px 0 14px;border-top:1px solid var(--hair);font-size:15px;font-weight:500}
.mrw:first-child{border-top:0}
.mrw:hover{background:#fafcff}
.mrw>.ic:first-child{color:var(--blue-2);width:20px;height:20px}
.mrw span{flex:1}
.mrw>.ic:last-child{width:16px;height:16px;color:var(--muted)}
.mout{width:100%;margin-top:16px;color:var(--bad);border-color:#f3c9c4}
.mver{text-align:center;font-size:12px;color:var(--muted);margin-top:10px}
.mform h1{font-size:21px;font-weight:800;line-height:1.25;margin:6px 0}
.mform>p{font-size:14px;color:var(--muted);margin-bottom:14px}
.mform .ctx{display:grid;grid-template-columns:72px minmax(0,1fr);gap:10px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px;margin-bottom:14px;font-size:13px;color:var(--muted)}
.mform .ctx.one{grid-template-columns:auto minmax(0,1fr)}
.mform .ctx .th .code,.mform .ctx .th .art{display:none}
.mform .ctx b{display:block;color:var(--ink);font-size:14px;line-height:1.25}
.mform .inp{min-height:48px;font-size:15px}
.mform .center{margin-top:16px}
.mdoc h1{font-size:19px;font-weight:800;line-height:1.25;margin-top:14px}
.mdoc>small{font-size:12.5px;color:var(--muted)}
.mdoc h2{font-size:15px;font-weight:700;margin:14px 0 4px}
.mdoc .ph{font-size:14px;color:var(--muted);background:repeating-linear-gradient(135deg,#fff,#fff 8px,#f4f7fb 8px,#f4f7fb 16px);border:1px dashed var(--line);border-radius:10px;padding:9px 11px;line-height:1.5}
.mdraft{display:flex;gap:10px;background:var(--warn-bg);border:1px solid var(--warn-line);border-radius:12px;padding:10px 12px;font-size:13.5px;color:#5c3d00;line-height:1.45}
.mdraft .ic{color:var(--warn);margin-top:1px}
.mdraft b{color:var(--ink)}

/* DT-9 / DT-14 / DT-17b Đăng nhập, kích hoạt, quên mật khẩu (nền tối công nghệ) */
.k-auth{background:#070d1a}
.login{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);min-height:100vh;min-height:100dvh;background:#fff}
.lg-art,.auth{color:#e6eefc;background:radial-gradient(circle at 18% 20%,rgba(10,91,211,.45),transparent 42%),radial-gradient(circle at 88% 92%,rgba(60,207,154,.22),transparent 40%),linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px) 0 0/32px 32px,linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px) 0 0/32px 32px,#070d1a}
.lg-art{padding:48px 56px;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:center}
.mtopb{display:flex;align-items:center;gap:12px;font-weight:700;font-size:18px;color:#fff}
.mtopb img{height:36px;width:auto}
.mtopb span{padding-left:12px;border-left:1px solid #ffffff38;line-height:22px}
.mk{font-size:11.5px;letter-spacing:2.2px;color:#7aa7ff;margin:26px 0 10px}
.mk.g{color:#7ee2b8;margin:0 0 12px}
.lg-art h1,.auth h1.big{font-size:38px;font-weight:800;line-height:1.18;color:#fff;max-width:14em}
.lg-art h1 span,.auth h1.big span{background:linear-gradient(90deg,#5aa0ff,#3ccf9a);-webkit-background-clip:text;background-clip:text;color:transparent}
.lg-pts{margin-top:24px;display:grid;gap:12px;position:relative;z-index:1}
.lg-pts li{display:flex;gap:12px;align-items:center;font-size:15.5px;color:#c9d6ea}
.lg-pts .ic{color:#7ee2b8;width:20px;height:20px}
.lg-art .art{position:absolute;right:-60px;bottom:-10px;width:520px;max-width:90%;height:auto;color:#5aa0ff;opacity:.28}
.lg-form{padding:44px 72px;align-self:center;width:100%;max-width:640px}
.lg-form h2{font-size:28px;font-weight:800}
.lg-form>p.muted{margin:4px 0 20px}
.lg-form .fld{margin-bottom:14px}
.lg-form .inp{min-height:48px}
.lg-row{display:flex;align-items:center;margin:2px 0 18px;gap:10px}
.lg-note{display:flex;gap:9px;margin-top:20px;font-size:13.5px;color:var(--muted)}
.lg-note .ic{margin-top:2px}
.auth{min-height:100vh;min-height:100dvh;padding:30px 28px 34px;display:flex;flex-direction:column;align-items:center}
.auth>*{width:100%;max-width:440px}
.auth.wide{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1fr);gap:40px;align-items:center;align-content:center;justify-content:center;padding:40px}
.auth.wide>*{max-width:460px}
.auth.wide .tk-l{justify-self:end}
.auth.wide .tk-p{margin-top:0}
.auth h1.big{font-size:32px}
.tk-p{background:rgba(13,23,42,.86);border:1px solid #1f2e4a;border-radius:20px;padding:22px;margin-top:26px;box-shadow:0 30px 80px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.05)}
.tk-p h1{font-size:22px;font-weight:800;color:#fff;margin:0 0 6px}
.tk-p p{font-size:14px;color:#a9bbd8;line-height:1.55}
.tk-p p b{color:#fff;overflow-wrap:anywhere}
.tk-p .acts{margin-top:8px}
.tk-p .fnote{color:#fecaca}
.tk-p .fnote .ic{color:#f87171}
.track{display:flex;align-items:center;margin-top:30px}
.track li{display:flex;flex-direction:column;align-items:center;gap:8px;font-size:12.5px;color:#8fa1b9;width:84px;text-align:center;white-space:nowrap}
.track b{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:#13213a;border:2px solid #24324a;font-size:13px}
.track b .ic{width:15px;height:15px;stroke-width:3}
.track .ok b{background:#3ccf9a;border-color:#3ccf9a;color:#06281b}
.track .now{color:#fff;font-weight:600}.track .now b{background:#0a5bd3;border-color:#5aa0ff;box-shadow:0 0 0 6px rgba(10,91,211,.25)}
.track i{flex:1;max-width:60px;height:2px;background:#24324a;margin-bottom:24px}.track i.g{background:#3ccf9a}
.who{display:flex;gap:12px;align-items:center;margin-bottom:16px}
.who div{min-width:0}
.who b{display:block;font-size:16px;color:#fff;overflow-wrap:anywhere}
.who small{display:block;font-size:12.5px;color:#8fa1b9;line-height:1.45;overflow-wrap:anywhere}
.mchips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 6px}
.mchips span{display:inline-flex;gap:8px;align-items:center;background:#13213a;border:1px solid #24324a;border-radius:10px;padding:5px 11px 5px 5px;font-size:13px;font-weight:600;white-space:nowrap}
.mchips .ptile{width:28px;height:28px;border-radius:8px;font-size:8.5px}
.dfld{display:block;margin-top:14px}
.dfld>span{display:block;font-size:12.5px;font-weight:600;color:#a9bbd8;margin-bottom:5px}
.dinp{display:flex;align-items:center;height:46px;border-radius:12px;background:#0b1424;border:1px solid #2a3b5c;padding:0 14px;color:#fff}
.dinp:focus-within{border-color:#5aa0ff;box-shadow:0 0 0 4px rgba(10,91,211,.3)}
.dinp input{font-size:15px}
.dinp input::placeholder{color:#5d6e8a}
.dinp .eye{color:#8fa1b9}
.mbtn{display:inline-flex;gap:8px;align-items:center;justify-content:center;height:50px;padding:0 24px;border:0;border-radius:12px;background:linear-gradient(90deg,#0a5bd3,#22b28a);color:#fff;font-weight:700;font-size:16px;box-shadow:0 12px 30px -10px rgba(10,91,211,.8);white-space:nowrap}
.mbtn.full{display:flex;width:100%;margin-top:16px}
.mbtn.ghost{background:none;border:1px solid #5aa0ff;color:#cfe1ff;box-shadow:none}
.mbtn:disabled{opacity:.6}
.auth .back{display:flex;gap:6px;align-items:center;justify-content:center;margin-top:16px;font-size:13.5px;font-weight:600;color:#8fb8ff}
.auth .back .ic{width:15px;height:15px}
.bigic{width:60px;height:60px;border-radius:18px;background:#0a5bd333;border:1px solid #5aa0ff66;color:#8fb8ff;display:grid;place-items:center;margin-bottom:16px}
.bigic .ic{width:30px;height:30px}
.hintb{margin-top:16px;border-radius:12px;background:#0b1424;border:1px solid #24324a;padding:11px 13px;font-size:13px!important;color:#a9bbd8}
.wait{display:flex;align-items:center;justify-content:center;gap:8px;height:48px;border-radius:12px;border:1px solid #2a3b5c;color:#8fa1b9;font-weight:600;font-size:14.5px;margin-top:16px}
.wait b{color:#fff;font-family:var(--mono)}

/* Trạng thái đang tải / rỗng / lỗi, dải báo nổi */
.state{display:grid;justify-items:center;gap:8px;text-align:center;padding:56px 20px;color:var(--muted);font-size:14.5px}
.state .tile{width:52px;height:52px;border-radius:14px;background:var(--build-bg);color:var(--blue-2);display:grid;place-items:center}
.state .tile .ic{width:26px;height:26px}
.state b{color:var(--ink);font-size:17px}
.state p{max-width:46ch}
.state .btn{margin-top:8px}
.state.error .tile,.state.offline .tile{background:var(--bad-bg);color:var(--bad)}
.state.loading .tile .ic{animation:spin 1s linear infinite}
.state.loading b{font-weight:500;font-size:14.5px;color:var(--muted)}
@keyframes spin{to{transform:rotate(360deg)}}
.pane .state,.results .state{background:#fff;border:1px dashed var(--line);border-radius:14px}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);max-width:min(92vw,520px);background:var(--navy);color:#fff;font-size:14.5px;font-weight:500;padding:11px 16px;border-radius:12px;box-shadow:0 20px 40px -16px #000a;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:60}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.ok{background:#0f5132}.toast.warn{background:#7a4b00}

/* ---------- Màn hẹp dần ---------- */
/* ================= Học viên vãng lai (DT-37…DT-42): trang công khai, giá khoá, đăng ký khoá, đơn chuyển khoản ================= */
.top.pub .btn{min-height:40px;padding:0 16px}
.hero-cta{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:18px;font-size:15px;color:var(--muted)}
.hero .bigsearch{margin:20px 0 0}
.hero-cta .more{color:var(--blue);font-weight:600}
.mybox li a{flex:1;min-width:0}
.mybox li a:hover b{color:var(--blue)}
.mybox li .em{margin-left:auto;font-weight:700;font-size:13px;color:var(--warn);white-space:nowrap;text-decoration:underline}
.mybox li em.wait{color:var(--blue-2);font-size:12.5px}
.mybox .foot .more{display:inline-flex;gap:6px;align-items:center;color:var(--blue);font-weight:600}
.card.course .price{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin:auto 4px 0;padding-top:10px;border-top:1px solid var(--hair)}
.course .lic+.price{margin-top:10px}
.price b{font-size:18px;font-weight:800;white-space:nowrap}
.price b.free,.amount b.free{color:var(--ok)}
.price small{font-size:13px;color:var(--muted)}
/* ===== Trang chủ công khai (ảnh DT-78): phần đầu có chùm icon sản phẩm + mục «Ba bước để vào học» ===== */
.hx{padding:56px 0 48px}
.hx-grid{display:grid;grid-template-columns:minmax(0,1fr) 480px;gap:40px;align-items:center}
.hx h1{font-size:48px;line-height:1.08;margin:16px 0 14px;letter-spacing:-.01em}
.hx .lead{font-size:17.5px;max-width:56ch}
.hx .bigsearch{margin-top:24px;max-width:640px}
.hx .hero-cta{margin-top:18px}
.pill-new{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 12px 5px 6px;font-size:13px;font-weight:600;box-shadow:0 6px 18px -12px var(--blue)}
.pill-new i{font:700 10.5px var(--mono);font-style:normal;background:linear-gradient(90deg,var(--blue),var(--teal));color:#fff;border-radius:999px;padding:3px 8px}
.stats{display:flex;gap:28px;margin-top:28px;padding-top:22px;border-top:1px dashed var(--line);max-width:640px}
.stats b{display:block;font-size:26px;font-weight:800;line-height:1;background:linear-gradient(90deg,var(--blue),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}
.stats span{font-size:13px;color:var(--muted)}
.orbit{position:relative;height:440px}
.orbit .core{position:absolute;left:50%;top:50%;width:200px;height:200px;transform:translate(-50%,-50%);border-radius:36px;overflow:hidden;display:grid;place-items:center;
  background:linear-gradient(145deg,#0b2a5c,#0b6bff 60%,#14b8c4);box-shadow:0 30px 70px -20px #0b6bffaa,inset 0 1px 0 #ffffff40}
.orbit .core::before{content:"";position:absolute;inset:0;background:linear-gradient(#ffffff14 1px,transparent 1px) 0 0/20px 20px,linear-gradient(90deg,#ffffff14 1px,transparent 1px) 0 0/20px 20px}
.orbit .core::after{content:"";position:absolute;inset:-40%;background:conic-gradient(from 0deg,transparent 0 70%,#ffffff55 80%,transparent 90%);animation:hx-spin 6s linear infinite}
.orbit .core svg{position:relative;z-index:1;width:120px;color:#fff}
.orbit .core svg .bk{opacity:.55}
.orbit .ring{position:absolute;left:50%;top:50%;border:1px dashed #0b6bff40;border-radius:50%;transform:translate(-50%,-50%)}
.orbit .r1{width:330px;height:330px}.orbit .r2{width:450px;height:450px;border-color:#14958a30}
.fi{position:absolute;width:74px;height:74px;border-radius:20px;background:#fff;border:1px solid var(--line);display:grid;place-items:center;box-shadow:0 18px 34px -18px var(--blue);animation:hx-float 6s ease-in-out infinite}
.fi img{width:44px;height:auto}
.fi.o4,.fi.o5,.fi.o7,.fi.o8{width:58px;height:58px;border-radius:16px}
.fi.o4 img,.fi.o5 img,.fi.o7 img,.fi.o8 img{width:34px}
.fi.o1{left:12%;top:6%}.fi.o2{left:74%;top:2%;animation-delay:-2s}.fi.o3{left:84%;top:58%;animation-duration:7s}.fi.o4{left:44%;top:-4%;animation-delay:-4s}
.fi.o5{left:60%;top:84%;animation-duration:7s;animation-delay:-1s}.fi.o6{left:2%;top:62%;animation-delay:-3s}.fi.o7{left:22%;top:84%;animation-duration:7s;animation-delay:-5s}.fi.o8{left:92%;top:30%;animation-delay:-2.5s}
.tagc{position:absolute;left:30%;top:97%;background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px 12px;font-size:12.5px;font-weight:600;white-space:nowrap;box-shadow:0 14px 30px -18px #0b2a5c;display:flex;gap:8px;align-items:center;animation:hx-float 8s ease-in-out infinite}
.tagc i{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px #1aa05a22}
@keyframes hx-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes hx-spin{to{transform:rotate(360deg)}}
.how{padding:44px 0 20px}
.how-h{text-align:center;margin-bottom:34px}
.how-h .eyebrow{justify-content:center}
.how-h h2{font-size:30px;font-weight:800;margin:10px 0 6px}
.how-h p{color:var(--muted)}
.steps2{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;list-style:none;margin:0;padding:0}
.steps2::before{content:"";position:absolute;left:16%;right:16%;top:46px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--blue),var(--teal),var(--green));opacity:.35}
.steps2::after{content:"";position:absolute;left:16%;top:44px;width:60px;height:7px;border-radius:7px;background:linear-gradient(90deg,transparent,#fff,transparent);filter:blur(1px);animation:hx-run 3.2s ease-in-out infinite}
@keyframes hx-run{0%{left:16%;opacity:0}15%{opacity:1}85%{opacity:1}100%{left:calc(84% - 60px);opacity:0}}
.st{position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px 22px 24px;text-align:center;overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s,opacity .6s}
.st:hover{transform:translateY(-6px);border-color:transparent;box-shadow:0 26px 50px -26px var(--sc),0 0 0 2px var(--sc)}
.st .no{position:absolute;right:14px;top:4px;font:800 76px/1 var(--font);color:var(--sc);opacity:.07}
.st .sico{position:relative;z-index:1;width:52px;height:52px;margin:0 auto 16px;border-radius:16px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--sc),var(--sc2));box-shadow:0 12px 24px -10px var(--sc)}
.st .sico .ic{width:26px;height:26px;stroke-width:2}
.st .k{font:600 11.5px var(--mono);letter-spacing:.1em;color:var(--sc);text-transform:uppercase}
.st h3{font-size:18.5px;font-weight:700;margin:6px 0}
.st p{color:var(--muted);font-size:14.5px;margin:0 auto;max-width:30ch}
.st .chipx{display:inline-flex;margin-top:14px;font-size:12.5px;font-weight:600;color:var(--sc);background:color-mix(in srgb,var(--sc) 9%,#fff);border-radius:999px;padding:4px 10px}
.st.s1{--sc:#0b6bff;--sc2:#3aa0ff}.st.s2{--sc:#14958a;--sc2:#2cc7b5}.st.s3{--sc:#1aa05a;--sc2:#7ad04b}
.how-cta{text-align:center;margin-top:30px}
.rv{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.rv.in{opacity:1;transform:none}
.steps2 .rv:nth-child(2){transition-delay:.12s}.steps2 .rv:nth-child(3){transition-delay:.24s}
.st.rv.in:hover{transform:translateY(-6px);transition-delay:0s}
button.les{width:100%;border:0;border-top:1px solid var(--hair);background:none;text-align:left;cursor:pointer}
button.les:first-child{border-top:0}
button.les:hover{background:#f7faff}
.trialbar .btn{flex:none}
/* Thẻ giá bên cạnh trang khoá */
.card.offer{border-color:var(--blue);box-shadow:0 0 0 1px rgba(11,107,255,.25),0 24px 50px -34px rgba(11,107,255,.55)}
.offer .amount{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.offer .amount b{font-size:28px;font-weight:800;letter-spacing:-.01em}
.offer .amount small{font-size:13.5px;color:var(--muted)}
.offer ul{margin-bottom:14px}
.offer li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-top:1px solid var(--hair);font-size:14.5px}
.offer li:first-child{border-top:0}
.offer li .ic{color:var(--blue);margin-top:2px}
.offer .or{display:flex;align-items:center;gap:10px;margin:12px 0 10px;font-size:13px;color:var(--muted)}
.offer .or::before,.offer .or::after{content:"";flex:1;height:1px;background:var(--line)}
.offer.wait h3{margin:10px 0 8px}
.ways{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-bottom:14px}
.ways .card{padding:14px 16px;display:block}
.ways .card.on{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue)}
.ways small{display:flex;gap:6px;align-items:center;font-size:12.5px;font-weight:700;color:var(--blue-2)}
.ways small .ic{width:15px;height:15px}
.ways b{display:block;font-size:15.5px;margin:6px 0 3px}
.ways p{font-size:13.5px;color:var(--muted)}
.msticky.buy span:first-child{display:grid;line-height:1.25}
.msticky.buy b{font-size:16px;font-weight:800;color:var(--ink)}
.msticky.buy small{font-size:12.5px;color:var(--muted)}
/* Đăng ký khoá + đơn */
.wrap.narrow.buy{max-width:720px}
.wrap.narrow.buy.wide{max-width:860px}
.buy .backrow small{margin-left:auto;font-size:13px;font-weight:600;color:var(--muted)}
.buy>.card,.buy form>.card,.buy>.ctx,.buy>.btn{margin-bottom:14px}
.buy .ctx{display:grid;grid-template-columns:112px minmax(0,1fr);gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px;margin-bottom:14px;font-size:13.5px;color:var(--muted)}
.buy .ctx .th .code{display:none}
.buy .ctx .th .art{height:70%;right:50%;transform:translate(50%,-50%)}
.buy .ctx b{display:block;color:var(--ink);font-size:16.5px;line-height:1.25}
.osteps{display:flex;align-items:center;gap:10px;margin:2px 0 16px}
.osteps li{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--muted);white-space:nowrap}
.osteps li b{width:26px;height:26px;border-radius:50%;border:1.5px solid var(--line);background:#fff;display:grid;place-items:center;font-size:12.5px}
.osteps li b .ic{width:14px;height:14px;stroke-width:3}
.osteps .now{color:var(--blue)}.osteps .now b{border-color:var(--blue);box-shadow:0 0 0 3px rgba(11,107,255,.16)}
.osteps .ok{color:var(--ink)}.osteps .ok b{background:var(--ok);border-color:var(--ok);color:#fff}
.osteps i{flex:1;height:1px;background:var(--line);min-width:12px}.osteps i.g{background:var(--ok)}
.kvc{padding:6px 18px}
.kv>div{display:grid;grid-template-columns:120px minmax(0,1fr);gap:12px;padding:11px 0;border-top:1px solid var(--hair);font-size:15px}
.kv>div:first-child{border-top:0}
.kv dt{color:var(--muted)}
.kv dd{margin:0;min-width:0;overflow-wrap:anywhere}
.kv dd.b{font-weight:600}
.kv dd small{display:block;font-weight:400;font-size:13px;color:var(--muted)}
.card.inv .agree b{font-size:15.5px}
.invf{margin-top:14px}
.fld2.even{grid-template-columns:repeat(2,minmax(0,1fr))}
.fld2.even .inp{font-size:14.5px;padding:0 12px}
.buy .inp{min-height:48px;font-size:15px}
.fine2.l{text-align:left;margin-top:2px}
.buy form>.fnote{margin-bottom:10px}
.card.pay{display:grid;grid-template-columns:260px minmax(0,1fr);gap:22px;align-items:start}
.pay .qr{text-align:center;font-size:13px;color:var(--muted)}
.pay .qr img{display:block;width:100%;height:auto;aspect-ratio:1;border:1px solid var(--line);border-radius:12px;padding:8px;background:#fff;image-rendering:pixelated}
.pay .qr p{margin:10px 0}
.prow{display:flex;align-items:flex-end;gap:10px;padding:10px 0;border-top:1px solid var(--hair)}
.prow:first-child{border-top:0;padding-top:0}
.prow div{flex:1;min-width:0}
.prow small{display:block;font-size:13px;color:var(--muted)}
.prow b{display:block;font-size:16.5px;font-weight:600;overflow-wrap:anywhere}
.prow b.mono{font-size:19px;font-weight:700;letter-spacing:.02em}
.btn.cp{background:var(--build-bg);border-color:#bcd4f7;color:var(--blue-2);min-height:32px}
.pwarn{display:flex;gap:10px;background:var(--warn-bg);border-radius:10px;padding:10px 12px;margin-top:12px;font-size:14px;color:#5c3d00}
.pwarn .ic{color:var(--warn);margin-top:2px}
.hold{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:14px;color:var(--muted);margin:2px 0 6px}
.hold span:first-child{display:inline-flex;gap:7px;align-items:center}
.hold .ic{width:16px;height:16px}
.lnk.bad{color:var(--bad);text-decoration:none;font-weight:700}
.sure{display:inline-flex;gap:8px;align-items:center;font-weight:600;color:var(--ink)}
.btn.danger{border-color:#f3c2bc;color:var(--bad)}
.btn.lg2{min-height:52px;margin-bottom:10px}
.ostate{padding:22px}
.ostate .tile{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;background:var(--hair);color:var(--muted);margin-bottom:10px;font-style:normal}
.ostate .tile .ic{width:24px;height:24px}
.ostate .tile.warn{background:var(--warn-bg);color:var(--warn)}.ostate .tile.blue{background:var(--build-bg);color:var(--blue-2)}.ostate .tile.ok{background:var(--ok-bg);color:var(--ok)}.ostate .tile.bad{background:var(--bad-bg);color:var(--bad)}
.ostate h1{font-size:20px;font-weight:700;margin:8px 0 6px;text-wrap:wrap}
.ostate p{font-size:14.5px;color:var(--muted)}
.ostate .acts{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.pill.bad{background:var(--bad-bg);color:var(--bad)}
.acts2{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.ptitle{font-size:26px;font-weight:800;margin-top:4px}
.psub{font-size:14.5px;color:var(--muted);margin:4px 0 16px}
.olist{display:grid;gap:10px}
.orow{display:flex;gap:14px;align-items:center;padding:14px 16px}
.orow:hover{border-color:#b9cbe3}
.orow>div{flex:1;min-width:0}
.orow b{display:block;font-size:15.5px;line-height:1.3}
.orow small{display:block;font-size:13.5px;color:var(--muted)}
.orow p{font-size:13.5px;color:var(--ink);margin-top:3px}
.orow>.ic{width:16px;height:16px;color:var(--muted)}
.drow .lic{margin-top:8px}
.dacts{display:grid;gap:8px}
/* Đăng nhập / đăng ký */
.lg-reg{display:flex;align-items:center;gap:12px;margin-top:18px;padding:14px 16px;border:1px solid #bcd4f7;background:var(--build-bg);border-radius:12px}
.lg-reg div{flex:1;min-width:0}
.lg-reg b{display:block;font-size:15px}
.lg-reg small{font-size:13px;color:var(--muted)}
.lg-form .lg-note+.lg-reg+.lg-note{margin-top:14px}
/* Đăng nhập bằng OneCAD ID (nhánh task/onecad-id): nút chính phía trên biểu mẫu + vạch "hoặc dùng email" */
.lg-form .btn.oid{margin-top:4px}
.lg-or{display:flex;align-items:center;gap:10px;margin:16px 0 14px;font-size:13px;color:var(--muted)}
.lg-or::before,.lg-or::after{content:"";flex:1;height:1px;background:var(--line)}
.hintb.co{display:flex;gap:10px}
.hintb.co .ic{color:#7ee2b8;margin-top:2px}
.auth .track{margin-top:18px;justify-content:center}
.auth a.back{justify-content:center}

/* ================= Kiểm tra cuối khoá + chứng chỉ (DT-46 … DT-49) ================= */
.qblock{margin-top:18px}
.qcard{padding:20px}
.qtile{width:44px;height:44px;border-radius:11px;display:grid;place-items:center;background:var(--hair);color:var(--muted);margin-bottom:10px;font-style:normal}
.qtile .ic{width:22px;height:22px}
.qtile.warn{background:var(--warn-bg);color:var(--warn)}.qtile.blue{background:var(--build-bg);color:var(--blue-2)}.qtile.ok{background:var(--ok-bg);color:var(--ok)}.qtile.bad{background:var(--bad-bg);color:var(--bad)}
.qcard h3{font-size:19px;font-weight:700;margin:8px 0 6px}
.qcard p.t{font-size:14.5px;color:var(--muted)}
.qcard p.t b{color:var(--ink)}
.qcard .acts2{margin:16px 0 0}
.qneed{margin-top:12px;display:grid;gap:8px;font-size:14.5px}
.qneed li{display:flex;gap:9px;align-items:flex-start}
.qneed .ic{margin-top:3px}.qneed .ok .ic{color:var(--ok)}.qneed .no .ic{color:var(--bad)}
.qneed .more{color:var(--blue);font-weight:600}
.qfacts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:14px}
.qfacts li{display:flex;gap:10px;align-items:center;background:var(--bg);border-radius:10px;padding:10px 12px}
.qfacts .ic{color:var(--blue)}
.qfacts b{display:block;font-size:15px;line-height:1.25}.qfacts small{font-size:12.5px;color:var(--muted)}
.qmsg{margin-top:12px}
/* Màn làm bài */
.qpage{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;background:var(--bg)}
.qbar .mark{display:grid;place-items:center}.qbar .mark img{width:100%;height:100%}
.qbar .qt{min-width:0}.qbar .qt b{display:block;font-size:16px;line-height:1.2}.qbar .qt small{display:block;font-size:13px;color:#c4d2e6;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.qclock{display:inline-flex;gap:7px;align-items:center;background:#ffffff1c;border-radius:9px;padding:7px 12px;font-weight:600;font-size:14.5px;white-space:nowrap}
.qclock b{font-size:15px}.qclock.low{background:#b42318;color:#fff}
.qbar .btn{min-height:40px}
.qwrap{flex:1;display:grid;grid-template-columns:minmax(0,1fr) 300px;max-width:1288px;width:100%;margin:0 auto}
.qmain{padding:24px 28px 40px;min-width:0}
.qprog{display:flex;gap:14px;align-items:center;font-size:13.5px;font-weight:600;color:var(--muted);margin-bottom:16px}
.qprog .bar{flex:1}
.qmain h1{font-size:21px;font-weight:700;margin:10px 0 14px;line-height:1.35;text-wrap:wrap}
.qopts{display:grid;gap:10px}
.qopt{display:flex;gap:12px;align-items:center;width:100%;text-align:left;min-height:54px;padding:10px 14px;border:1.5px solid var(--line);border-radius:12px;background:#fff;font-size:15.5px;cursor:pointer}
button.qopt:hover{border-color:#9db9de}
.qopt.on{border-color:var(--blue);background:#f3f8ff}
.qopt .box,.qopt .dot,.qopt .let{flex:none;width:26px;height:26px;display:grid;place-items:center;border:1.5px solid var(--line);background:#fff;font-size:12.5px;font-weight:700;color:var(--muted)}
.qopt .box{border-radius:7px}.qopt .dot,.qopt .let{border-radius:50%}
.qopt.on .box,.qopt.on .let{background:var(--blue);border-color:var(--blue);color:#fff}
.qopt .box .ic{width:16px;height:16px;stroke-width:3}
.qopt.on .dot{border:7px solid var(--blue)}
.qnav{display:flex;gap:10px;align-items:center;margin-top:18px;flex-wrap:wrap}
.btn.flag{background:var(--warn-bg);border-color:var(--warn-line);color:var(--warn)}
.qside{border-left:1px solid var(--line);background:#fff;padding:24px 20px}
.qside h2{font-size:16px;font-weight:700;margin-bottom:12px}
.qgrid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:7px}
.qgrid button{height:38px;border:1.5px solid var(--line);border-radius:9px;background:#fff;font-weight:700;font-size:13.5px;color:var(--muted)}
.qgrid .done{background:var(--build-bg);border-color:#bcd4f7;color:var(--blue-2)}
.qgrid .flag{background:var(--warn-bg);border-color:var(--warn-line);color:var(--warn)}
.qgrid .cur{background:var(--blue);border-color:var(--blue);color:#fff}
.qleg{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:12.5px;color:var(--muted);margin:12px 0}
.qleg span{display:inline-flex;gap:6px;align-items:center}
.qleg span::before{content:"";width:12px;height:12px;border-radius:3px;border:1.5px solid var(--line);background:#fff}
.qleg .done::before{background:var(--build-bg);border-color:#bcd4f7}.qleg .flag::before{background:var(--warn-bg);border-color:var(--warn-line)}
.qnote{display:flex;gap:8px;font-size:12.5px;color:var(--muted);padding-top:12px;border-top:1px solid var(--hair)}
.qnote .ic{width:15px;height:15px;margin-top:2px}
.qover{position:fixed;inset:0;z-index:60;background:#0b1f3d99;display:grid;place-items:center;padding:16px}
.qdlg{max-width:520px;width:100%;padding:24px;box-shadow:0 30px 80px -20px #000a}
.qdlg h2{font-size:20px;font-weight:700;margin:6px 0}
.qdlg p{font-size:14.5px;color:var(--muted)}
.qdlg .acts2{margin:18px 0 0}
/* Kết quả */
.wrap.narrow.qres{max-width:760px;padding-top:24px}
.qsum{text-align:center;padding:28px 26px}
.qringb{position:relative;width:150px;height:150px;margin:0 auto 10px}
.qring{width:100%;height:100%}
.qring .bg{stroke:var(--hair)}.qring .fg{stroke:#d69a1c}.qring.ok .fg{stroke:var(--ok)}
.qringb div{position:absolute;inset:0;display:grid;place-content:center}
.qringb b{font-size:34px;font-weight:800;line-height:1}.qringb small{font-size:13px;color:var(--muted)}
.qsum h1{font-size:24px;font-weight:800;margin:10px 0 4px}
.qsum .sub{font-size:14px;color:var(--muted)}
.qchap{margin:20px 0 6px;display:grid;gap:10px;text-align:left}
.qchap li{display:grid;grid-template-columns:minmax(0,1fr) 160px 54px;gap:14px;align-items:center;font-size:14.5px}
.qchap .bar.full i{background:var(--ok)}
.qchap b{text-align:right;font-variant-numeric:tabular-nums}
.acts2.c{justify-content:center;margin:16px 0 0}
.qreview{margin-top:22px}
.qreview h2{font-size:18px;font-weight:700;margin-bottom:12px}
.qrev{margin-bottom:14px}
.qrh{display:flex;gap:10px;align-items:center;font-size:14.5px}
.qrev h3{font-size:16.5px;font-weight:700;margin:10px 0;line-height:1.35}
.qopt.ro{cursor:default;min-height:46px;margin-bottom:8px;font-size:15px}
.qopt.ro em{margin-left:auto;font-style:normal;font-size:12.5px;font-weight:700;white-space:nowrap}
.qopt.bad{background:#fff5f4;border-color:#f3c2bc}.qopt.bad em{color:var(--bad)}.qopt.bad .let{background:var(--bad);border-color:var(--bad);color:#fff}
.qopt.good{background:var(--ok-bg);border-color:#b5dcc6}.qopt.good em{color:var(--ok)}.qopt.good .let{background:var(--ok);border-color:var(--ok);color:#fff}
.qexp{display:flex;gap:10px;background:var(--bg);border-radius:10px;padding:10px 12px;font-size:14px;margin-top:4px}
.qexp .ic{color:var(--blue);margin-top:2px}
/* Chứng chỉ */
.certs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.certc{padding:16px}
.certm{position:relative;border:2px solid var(--navy);border-top:6px solid var(--blue);border-radius:6px;background:#fff;padding:16px 18px;text-align:center;overflow:hidden;aspect-ratio:297/210;display:flex;flex-direction:column;justify-content:center}
.cm-h{display:flex;align-items:center;gap:8px;justify-content:center;font-weight:700;font-size:14px}.cm-h img{height:22px}
.cm-k{font:700 11px var(--mono);letter-spacing:.12em;color:var(--blue);margin-top:8px}
.cm-n{font-size:clamp(18px,3.2vw,28px);font-weight:800;line-height:1.2;margin:4px 0}
.cm-c{font-size:12.5px;color:var(--muted)}
.cm-t{font-size:clamp(14px,2vw,18px);font-weight:700;color:var(--teal);margin-top:4px}
.cm-f{font:600 11.5px var(--mono);color:var(--muted);margin-top:8px}
.certm.rev>*:not(.cm-stamp){opacity:.3}
.cm-stamp{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) rotate(-12deg);border:3px solid var(--bad);color:var(--bad);font-weight:800;font-size:20px;letter-spacing:.06em;padding:4px 14px;border-radius:8px;background:#fffc;white-space:nowrap}
.cc-b{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:14px}
.cc-b>div{flex:1;min-width:180px}
.cc-b b{display:block;font-size:15.5px}.cc-b small{font-size:13px;color:var(--muted)}
.cc-n{display:flex;gap:8px;align-items:center;font-size:12.5px;color:var(--muted);margin-top:12px;padding-top:10px;border-top:1px dashed var(--line)}
.cc-n .ic{width:15px;height:15px}
.ccnav{display:inline-flex;gap:7px;align-items:center;font-size:14px;font-weight:600;color:var(--muted)}
.wrap.narrow.ccpage{max-width:760px;padding-top:24px}
.ccpage>.card{padding:24px}
.ccban{display:flex;gap:14px;align-items:center;background:var(--ok-bg);color:var(--ok);border-radius:12px;padding:16px 18px;margin-bottom:20px}
.ccban>.ic{width:30px;height:30px}
.ccban h1{font-size:20px;font-weight:800}.ccban p{font-size:14px;color:inherit}
.ccban.bad{background:var(--bad-bg);color:var(--bad)}
.ccban.none{background:var(--hair);color:var(--muted);margin:16px 0 0}.ccban.none h1{font-size:17px;color:var(--ink)}
.ccgrid{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:22px;align-items:start}
.ccf{display:grid;gap:14px}
.ccf small{display:block;font-size:13px;color:var(--muted)}.ccf b{display:block;font-size:16px;overflow-wrap:anywhere}.ccf b.bad{color:var(--bad)}
.ccf .two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.ccgrid .cm-n{font-size:17px}.ccgrid .cm-t{font-size:12.5px}.ccgrid .cm-stamp{font-size:15px}
.ccfoot{font-size:13.5px;color:var(--muted);margin-top:18px;padding-top:14px;border-top:1px solid var(--hair)}
.ccfoot.dis{border-top:0;padding-top:0;margin-top:8px;font-size:12.5px}
.cct{font-size:24px;font-weight:800}.ccs{font-size:14.5px;color:var(--muted);margin:4px 0 16px}
.ccform{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;gap:12px;align-items:end}
.ccform .fld{margin:0}.ccform .inp{min-height:46px}.ccform .btn{min-height:46px}
.ccout:not(:empty){margin-top:20px;padding-top:20px;border-top:1px solid var(--hair)}
.ccout .ccban.none{margin-top:0}

@media (max-width:1180px){
  .pgrps{grid-template-columns:repeat(4,minmax(0,1fr))}
  .pgrp.n-5,.pgrp.n-6,.pgrp.n-7{grid-column:1/-1}
  .pgrp.n-3{grid-column:span 4}.pgrp.n-3 .pcards{grid-template-columns:repeat(4,minmax(0,1fr))}
  .pgrp.n-5 .pcards,.pgrp.n-6 .pcards,.pgrp.n-7 .pcards{grid-template-columns:repeat(4,minmax(0,1fr))}
  .courses,.dones{grid-template-columns:repeat(3,minmax(0,1fr))}
  .hero-grid{grid-template-columns:minmax(0,1fr) 360px;gap:32px}
  .hero h1{font-size:36px}
  .chero .wrap{grid-template-columns:minmax(0,1fr) 360px;gap:32px}
  .cbody{grid-template-columns:minmax(0,1fr) 330px;gap:22px}
  .learnwrap{grid-template-columns:minmax(0,1fr) 340px}
  .lbar .lp .bar{width:110px}
  .cont,.cont.n2{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .cont.n3 .big{grid-column:1/-1}
  .drow{grid-template-columns:160px minmax(0,1fr) 220px 160px;gap:16px}
}
@media (max-width:900px){
  .wrap{padding-inline:16px}
  /* Điện thoại / máy bảng dọc: điều hướng xuống thanh thẻ dưới (DT-6) */
  .tnav,.me b,.me small,.me>.ic,.foot{display:none}
  .top .wrap{height:54px}
  .logo{font-size:16px;margin-right:0;gap:10px}
  .logo img{height:28px}
  .logo span{padding-left:10px}
  .me .av{width:34px;height:34px;font-size:12px}
  .k-app #app,.k-open:not(.anon) #app{padding-bottom:calc(var(--tabbar) + env(safe-area-inset-bottom))}
  .tabbar{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;z-index:30;height:calc(var(--tabbar) + env(safe-area-inset-bottom));padding:8px 8px env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--line)}
  .tabbar a{display:grid;justify-items:center;align-content:center;gap:3px;font-size:11.5px;font-weight:600;color:var(--muted)}
  .tabbar a .ic{width:23px;height:23px}
  .tabbar a.on{color:var(--blue)}
  .toast{bottom:calc(var(--tabbar) + 16px)}
  .nbar .wrap{flex-wrap:wrap;gap:8px 12px}
  .nbar p{flex-basis:calc(100% - 34px);font-size:13.5px}
  .hero{padding:20px 0 22px}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:18px}
  .hero h1{font-size:25px;margin:10px 0 8px;line-height:1.2}
  .hero .lead{font-size:14.5px}
  .sec{padding-top:24px}
  .sec-head{margin-bottom:10px}
  .sec-head h2{font-size:18px}
  .sec-head p{display:none}
  .cont,.cont.n2{grid-template-columns:minmax(0,1fr);gap:10px}
  .cont .big,.cont.n1 .big{grid-template-columns:128px minmax(0,1fr);gap:12px;padding:10px;align-items:center}
  .cont .big .th{min-height:0;height:auto;aspect-ratio:16/11}
  .cont .big .th .playb{width:38px;height:38px;margin:-19px 0 0 -19px}
  .cont .big .th .playb .ic{width:17px;height:17px}
  .cont .big .th .code{display:none}
  .cont .big>div{display:contents}
  .cont .big .lic{display:none}
  .cont .big h3{font-size:15px;margin:0;grid-column:2;grid-row:1;align-self:end}
  .cont .big>a{grid-row:1/3}
  .cont .big .now{grid-column:2;font-size:13px;align-self:start}
  .cont .big .pr{grid-column:1/-1;margin:2px 0 0;font-size:12.5px}
  .cont .big .btn{grid-column:1/-1;min-height:42px}
  .cont .small{display:grid;grid-template-columns:96px minmax(0,1fr);gap:4px 12px;padding:10px;align-items:center}
  .cont .small>a{grid-row:1/4}
  .cont .small .th .dur,.cont .small .th .code{display:none}
  .cont .small h3{font-size:14.5px;margin:0}
  .cont .small .now{font-size:12.5px;margin:0}
  .cont .small .pr{margin:0;font-size:12px}
  .cont .small .btn{display:none}
  /* Chuyên ngành ở điện thoại (DT-77b): nút lọc trượt ngang; mỗi nhóm một hàng ô trượt ngang */
  .pfield{margin-bottom:14px}
  .fchips{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;margin:0 -16px 14px;padding:0 16px 2px}
  .fchip{flex:none;font-size:13px;padding:6px 12px 6px 9px}
  .pgrps{display:flex;flex-direction:column;gap:18px}
  .pgrp-h small{display:none}
  .pgrp .pcards{display:flex;overflow-x:auto;scrollbar-width:none;gap:10px;margin-right:-16px;padding-right:16px}
  .pcard{flex:0 0 124px}
  .pcard b{font-size:13px}
  .pcard .own{right:12px;top:12px;width:16px;height:16px}
  .pcard .own .ic{width:10px;height:10px}
  .try-t{right:10px;top:10px;font-size:10px;color:#fff;background:var(--blue);padding:1px 5px}
  /* Thẻ khoá học thành hàng ngang gọn */
  .courses,.dones{grid-template-columns:minmax(0,1fr);gap:8px}
  .course,.done-c{display:grid;grid-template-columns:96px minmax(0,1fr);gap:2px 12px;padding:8px 10px 8px 8px;align-items:center}
  .course .th,.done-c .th{grid-row:1/4}
  .course .th .dur,.course .th .code,.done-c .th .dur,.done-c .th .code{display:none}
  .course .th .art,.done-c .th .art{height:70%;right:50%;transform:translate(50%,-50%)}
  .course h3,.done-c h3{font-size:14.5px;margin:0;min-height:0}
  .course .meta,.done-c .meta{margin:0;font-size:12px}
  .course .lic,.done-c .more{margin:2px 0 0;justify-self:start;font-size:11.5px}
  .mhead{padding-top:18px}
  .mhead h1{font-size:22px;margin:8px 0 12px}
  .bigsearch{height:48px;border-radius:12px;padding:0 6px 0 14px;margin-bottom:10px;box-shadow:none}
  .bigsearch .btn{min-height:36px;padding:0 14px}
  .filt{margin-top:12px;gap:8px}
  .filt .fl{width:100%}
  .filt .hint{display:none}
  .chips{flex-wrap:nowrap;overflow-x:auto;margin-inline:-16px;padding-inline:16px;scrollbar-width:none}
  .chips::-webkit-scrollbar{display:none}
  .filt .seg-ctl{overflow-x:auto;scrollbar-width:none}
  .seg-ctl button,.seg-ctl a{padding:7px 12px}
  .results{padding-top:18px}
  .results .count{text-align:left}
  .card.blank{flex-wrap:wrap}
  .card.blank .btn{margin-left:0;width:100%}
  /* Trang khoá */
  .chero{padding:14px 0 20px}
  .chero .wrap{grid-template-columns:minmax(0,1fr);gap:14px}
  .chero .wrap>.th{order:-1;border-radius:12px}
  .crumb{margin-bottom:10px;font-size:13px}
  .chero h1{font-size:23px;margin:10px 0 6px}
  .chero .lead{font-size:14.5px}
  .cmeta{font-size:13.5px;gap:6px 14px;margin:12px 0}
  .cgo{margin-top:14px;gap:10px}
  .cgo .btn{width:100%}
  .cgo .btn.ghost.to-lead{display:none}
  .cgo .pr{max-width:none;flex-basis:100%}
  .cbody{grid-template-columns:minmax(0,1fr);gap:0;padding-top:0}
  .cbody>div>.tabs{margin-inline:-16px;padding-inline:6px}
  .side{margin-top:6px}
  .chap{border-radius:0;border-inline:0;margin:0 -16px;border-bottom:0}
  .chap:last-child{border-bottom:1px solid var(--line)}
  .chap-h{padding:12px 16px;gap:10px}
  .chap-h h3{font-size:15px}
  .chap-h .no{width:26px;height:26px;font-size:13px}
  .chap-h .pill{display:none}
  .les,.les.pv{grid-template-columns:22px 18px minmax(0,1fr) auto;gap:10px;padding:10px 16px;font-size:14px}
  .les .ty{width:18px;height:18px;background:none;color:var(--muted)}
  .les .ty .ic{width:16px;height:16px}
  .les .src{display:none}
  .les.pv .d{display:none}
  .les .d{min-width:0}
  .les .pill{font-size:11.5px;padding:0 7px;border-radius:6px}
  .les.lock .pill{background:none;padding:0}
  .trialbar{flex-wrap:wrap;margin-top:0}
  .trialbar div{flex:1;min-width:0}
  .trialbar .sp{display:none}
  .trialbar .seen{flex-basis:100%;padding-left:34px}
  .legend{display:none}
  .msticky{display:flex;gap:10px;align-items:center;position:fixed;left:0;right:0;bottom:calc(var(--tabbar) + env(safe-area-inset-bottom));z-index:25;background:#fff;border-top:1px solid var(--line);padding:10px 16px;font-size:13px;color:var(--muted)}
  .msticky .btn{min-height:42px;padding:0 14px;font-size:14px}
  .k-app:has(.msticky) #app{padding-bottom:calc(var(--tabbar) + 64px + env(safe-area-inset-bottom))}
  .fld2{grid-template-columns:minmax(0,1fr)}
  /* Màn học bài */
  .lbar{position:static}
  .lbar .in{height:50px;padding:0 12px;gap:10px}
  .lbar .mark,.lbar .lp,.lbar .btn{display:none}
  .lbar .mcount{display:block}
  .lbar .back .ic{width:22px;height:22px}
  .learnwrap{grid-template-columns:minmax(0,1fr)}
  .lmain{padding:0 0 4px}
  .lmain>.player,.lmain>.pdfbox,.lmain>.prose{border-radius:0;border-inline:0}
  .lmain>.slidebox,.lmain>.state,.pvnote{margin:12px 16px 0}
  .prose{padding:18px 16px;font-size:15.5px}
  .pdfv{height:68vh;min-height:360px}
  .ltitle{display:block;margin:0;padding:12px 16px 4px}
  .ltitle h1{font-size:19px;line-height:1.25}
  .ltitle p{font-size:13px;margin-top:3px}
  .btn.mark{width:100%;margin-top:10px;min-height:42px}
  .mnav{display:flex;gap:8px;padding:8px 16px 0}
  /* Bài video trên điện thoại (DT-54): khung phát sát mép trên cùng, rồi tên bài, rồi Đã học + Xong, bài sau */
  .lmain.vid{display:flex;flex-direction:column}
  .lmain.vid>.vpwrap{order:-1}
  .ltitle.vtitle{margin:0;padding:12px 16px 4px}
  .ltitle .vcrumb{display:none}
  .ltitle.vtitle p .vmch{display:inline-flex}
  .vnav{margin:0;padding:8px 16px 0;gap:8px;flex-wrap:nowrap}
  .vnav>a.btn,.vnav>.btn.off,.vnav .vhint,.vnav .btn.primary:nth-last-child(2){display:none}
  .vnav .btn.primary:last-child{display:inline-flex}
  .vnav .btn{flex:1;min-height:42px;font-size:14px;padding:0 10px;margin:0;width:auto}
  .mnav .btn{flex:1;min-height:42px;font-size:14px;padding:0 10px}
  .deskatt{display:none}
  .lside{position:static;height:auto;border-left:0;background:none;overflow:visible}
  .lside .hd{display:none}
  .mtabs{display:flex;margin:8px 0 0;padding:0 6px;background:var(--bg)}
  .mtabs a{padding:0 10px;font-size:14.5px;min-height:46px;gap:6px}
  .mtabs a .ic{width:17px;height:17px}
  .lside .tpane{background:#fff}
  .lside .tpane:not(.attp)[hidden]{display:none!important}
  .lside .attp{display:block!important;padding:4px 16px 12px}
  .lside .attp[hidden]{display:none!important}
  .lside .attp .card{border:0;padding:8px 0}
  .lside .attp h3.h{display:none}
  .toc .ch:first-child{border-top:0}
  .toc .ch{padding:11px 16px}
  .toc .l{padding:10px 16px}
  /* Việc học của tôi */
  .drow{grid-template-columns:96px minmax(0,1fr);gap:8px 12px;padding:10px}
  .drow h3{font-size:15px}
  .drow .now{font-size:13px;margin-top:1px}
  .drow .th .code{display:none}
  .drow .pr,.drow .btn{grid-column:1/-1}
  .drow .pr small{display:none}
  .drow .btn{min-height:42px}
  /* Đăng nhập, kích hoạt */
  .login{grid-template-columns:minmax(0,1fr);grid-template-rows:auto 1fr;background:#070d1a}
  .lg-art{padding:22px 20px 44px;justify-content:flex-start}
  .lg-art .mtopb img,.auth .mtopb img{height:30px}
  .lg-art .mtopb,.auth .mtopb{font-size:16px}
  .lg-art .mk{margin:22px 0 8px}
  .lg-art h1{font-size:26px}
  .lg-art .lg-pts,.lg-art .art{display:none}
  .lg-form{background:#fff;border-radius:22px 22px 0 0;padding:22px 20px 30px;margin-top:-22px;max-width:none;align-self:stretch;position:relative}
  .lg-form h2{font-size:23px}
  .lg-form>p.muted{margin-bottom:14px}
  .auth,.auth.wide{display:flex;padding:22px 20px 30px;align-items:stretch;justify-content:flex-start}
  .auth>*,.auth.wide>*{max-width:none}
  .auth.wide .tk-l{justify-self:auto}
  .auth.wide .tk-p{margin-top:20px}
  .auth h1.big{font-size:26px}
  .auth .mk{margin:22px 0 8px}
  .track{margin-top:20px}
  .track i{max-width:none}
  .tk-p{padding:18px}
}
@media (max-width:900px){
  .top.pub .wrap{gap:8px}
  .top.pub .btn{min-height:38px;padding:0 12px;font-size:14px}
  .k-pub .foot{display:flex}
  .hero .bigsearch{height:50px;margin-top:14px}
  .hero-cta{gap:10px;margin-top:14px}
  .hero-cta .btn{width:100%}
  /* DT-78 ở điện thoại: chùm icon thu nhỏ lên đầu, 3 bước xếp dọc có đường nối bên trái */
  .hx{padding:20px 0 26px}
  .hx-grid{grid-template-columns:minmax(0,1fr);gap:8px}
  .hx h1{font-size:28px}.hx .lead{font-size:15px}
  .orbit{height:230px;order:-1}
  .orbit .core{width:120px;height:120px;border-radius:26px}.orbit .core svg{width:72px}
  .orbit .r1{width:220px;height:220px}.orbit .r2{display:none}
  .fi{width:52px;height:52px;border-radius:14px}.fi img{width:30px}
  .fi.o4,.fi.o5,.fi.o7,.fi.o8,.tagc{display:none}
  .stats{gap:18px}.stats b{font-size:21px}
  .how{padding:30px 0 10px}.how-h h2{font-size:23px}
  .steps2{grid-template-columns:minmax(0,1fr);gap:14px}
  .steps2::before{left:47px;right:auto;top:30px;bottom:30px;width:3px;height:auto;background:linear-gradient(var(--blue),var(--teal),var(--green))}
  .steps2::after{display:none}
  .st{text-align:left;display:grid;grid-template-columns:52px minmax(0,1fr);column-gap:14px;padding:16px}
  .st .sico{margin:0;grid-row:span 4}.st p{margin:0;max-width:none}.st .chipx{justify-self:start}
  /* Thẻ khoá có giá ở điện thoại (DT-42a): ảnh bên trái, chữ và giá bên phải */
  .course:has(.price) .th{grid-row:1/5}
  .course .price{margin-inline:0}
  .card.course .price{margin-top:6px;padding-top:0;border-top:0}
  .course .lic+.price{margin-top:6px}
  .price b{font-size:16px}
  .ways{grid-template-columns:minmax(0,1fr);gap:10px}
  .k-pub:has(.msticky) #app{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  .k-pub .msticky{bottom:0}
  .wrap.narrow.buy{padding-bottom:24px}
  .buy .ctx{grid-template-columns:88px minmax(0,1fr);gap:10px}
  .buy .ctx b{font-size:15px}
  .osteps{display:none}
  .card.pay{grid-template-columns:minmax(0,1fr);gap:14px}
  .pay .qr img{max-width:240px;margin-inline:auto}
  .kv>div{grid-template-columns:96px minmax(0,1fr)}
  .fld2.even{grid-template-columns:minmax(0,1fr);gap:0}
  .orow{flex-wrap:wrap;gap:10px 12px}
  .orow>div{flex-basis:calc(100% - 60px)}
  .orow>.ic{display:none}
  .lg-reg{flex-wrap:wrap}
}
@media (max-width:900px){
  /* Làm bài trên điện thoại (DT-49): danh sách câu xuống dưới, thanh trên gọn */
  .qbar .in{gap:10px;padding:0 12px}
  .qbar .mark,.qbar .qt small{display:none}
  .qbar .qt b{font-size:14.5px}
  .qclock{padding:6px 9px;font-size:13.5px}
  .qbar .btn{min-height:38px;padding:0 12px;font-size:14px}
  .qwrap{grid-template-columns:minmax(0,1fr)}
  .qmain{padding:16px 16px 20px}
  .qmain h1{font-size:18px}
  .qside{border-left:0;border-top:1px solid var(--line);padding:16px}
  .qgrid{grid-template-columns:repeat(8,minmax(0,1fr))}
  .qnav .btn{flex:1}
  .qnav .sp{display:none}
  .qfacts{grid-template-columns:minmax(0,1fr)}
  .qchap li{grid-template-columns:minmax(0,1fr) 80px 44px;gap:10px;font-size:13.5px}
  .qsum{padding:20px 16px}
  .certs{grid-template-columns:minmax(0,1fr)}
  .ccgrid{grid-template-columns:minmax(0,1fr)}
  .ccgrid .certm{max-width:280px}
  .ccform{grid-template-columns:minmax(0,1fr)}
  .ccnav{font-size:13px}
  .k-cert .top .wrap{height:54px}
}
@media (max-width:380px){
  .logo span{display:none}
  .tabs a{padding:0 10px}
}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none}*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}
.ltitle.top{margin:0 0 18px;padding-top:0;border-top:0}

/* ---------- Nhắc học (ảnh DT-62, anh Tâm duyệt 17/10/2026): dải "đang học dở", công tắc "Nhận email nhắc học", trang tắt thư ---------- */
.nh-bar{background:#eef5ff;border-bottom:1px solid #cfe0f7;color:#2b3d57}
.nh-bar>.wrap>.ic{color:var(--blue)}
.nh-bar .ptile{width:30px;height:30px;border-radius:8px;font-size:8.5px}
.nh-bar p{flex:1;min-width:0}
.nh-bar .nh-short{display:none}
.nh-bar .btn.primary .ic{color:#fff}
.nh-x{width:34px;height:34px;border:0;background:none;color:var(--muted);display:grid;place-items:center;border-radius:8px;flex:none;padding:0}
.nh-x:hover{background:#dfeafa}
.nh-bar .nh-x .ic{width:18px;height:18px;color:var(--muted)}
.nh-tg{align-items:flex-start;padding:13px 14px;gap:12px}
.nh-tg>.ic:first-child{margin-top:2px}
.nh-tg span b{display:block;font-weight:600}
.nh-tg span small{display:block;margin-top:3px;line-height:1.45;font-size:13px;font-weight:400;color:var(--muted)}
.nh-tg .nh-short{display:none}
.nh-new{font-style:normal;font-size:11px;font-weight:700;color:#fff;background:var(--blue);border-radius:6px;padding:1px 6px;margin-left:6px;vertical-align:1px}
.nh-sw{width:44px;height:26px;border-radius:99px;border:0;background:#cfd8e3;position:relative;flex:none;padding:0;margin-top:2px;transition:background .15s}
.nh-sw::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.25);transition:left .15s}
.nh-sw[aria-checked="true"]{background:var(--blue)}.nh-sw[aria-checked="true"]::after{left:21px}
.nh-sw:disabled{opacity:.6;cursor:default}
.mver.nh-note{text-align:left;margin-top:8px}
.toast.act{display:flex;gap:14px;align-items:center;pointer-events:auto;width:max-content}
.toast.act button{margin-left:auto;border:0;background:none;color:#9cc2ff;font-weight:700;white-space:nowrap;padding:0}
.nh-off{display:grid;justify-items:center;text-align:center;gap:10px;padding-top:56px}
.nh-off .tile{width:56px;height:56px;border-radius:16px;display:grid;place-items:center;background:var(--build-bg);color:var(--blue-2)}
.nh-off .tile.ok{background:var(--ok-bg);color:var(--ok)}.nh-off .tile.err{background:var(--bad-bg);color:var(--bad)}
.nh-off .tile .ic{width:28px;height:28px}
.nh-off h1{font-size:24px}
.nh-off p{color:var(--muted);max-width:52ch}
.nh-off .acts{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:8px}
@media (max-width:900px){
  .nh-bar{background:none;border:0;padding:12px 16px 0}
  .nh-bar>.wrap{display:grid;grid-template-columns:34px minmax(0,1fr) 30px;gap:4px 10px;align-items:start;background:#eef5ff;border:1px solid #cfe0f7;border-radius:14px;padding:12px 10px 12px 14px}
  .nh-bar>.wrap>.ic:first-child{display:none}
  .nh-bar .ptile{width:34px;height:34px;font-size:9px}
  .nh-bar .nh-long{display:none}
  .nh-bar .nh-short{display:block;flex-basis:auto;font-size:14.5px}
  .nh-bar .nh-short b{display:block;line-height:1.35}
  .nh-bar .nh-short small{display:block;font-size:12.5px;color:var(--muted);margin-top:2px}
  .nh-bar .btn{grid-column:1/4;grid-row:2;margin-top:8px;width:100%;min-height:42px}
  .nh-bar .nh-x{grid-column:3;grid-row:1;width:30px;height:30px}
  .nh-tg .nh-long{display:none}.nh-tg .nh-short{display:block}
}

/* ===== Thẻ Tôi › Tài khoản học viên của công ty — người quản lý bên khách (ảnh DT-67 «Phía khách thấy», 17/10/2026) ===== */
.mquota{background:#fff;border:1.5px dashed #b9cde8;border-radius:14px;padding:14px 16px;margin-top:10px;display:grid;gap:8px}
.mquota .cu-h{display:flex;gap:10px;align-items:flex-start}
.mquota .cu-h b{display:block;font-size:15px}.mquota .cu-h small{font-size:12.5px;color:var(--muted)}
.mquota .cu-ic{width:32px;height:32px;border-radius:9px;background:var(--build-bg);color:var(--blue);display:grid;place-items:center;flex:none}.mquota .cu-ic svg{width:17px;height:17px}
.mquota .cu-q{display:flex;align-items:center;gap:12px}
.mquota .cu-q b{font-size:24px;font-weight:800;white-space:nowrap}.mquota .cu-q b span{color:var(--muted);font-weight:500}
.mquota .cu-q .bar{flex:1;height:10px}
.mquota .cu-q.full b{color:var(--bad)}.mquota .bar.bad i{background:var(--bad)}
.mquota .cu-full{display:flex;gap:8px;align-items:flex-start;color:var(--bad);font-size:13.5px;font-weight:600;margin:0}.mquota .cu-full svg{width:16px;height:16px;flex:none;margin-top:2px}
.mquota .cu-left{margin:0;font-size:13px;color:var(--muted)}
.mquota .cu-box{border-top:1px solid var(--hair);padding-top:12px;display:grid;gap:10px}
.mquota .cu-g{display:grid;grid-template-columns:110px minmax(0,1fr);gap:10px}
.mquota .cu-g .fld{margin:0}
.mquota .cu-to{display:flex;gap:9px;align-items:center;background:var(--build-bg);border-radius:10px;padding:8px 10px;font-size:13.5px}
.mquota .cu-to .av{width:28px;height:28px;font-size:10.5px}
.mquota .cu-to small{display:block;font-size:12px;color:var(--muted)}
.mquota .cu-sent{display:flex;gap:8px;align-items:flex-start;margin:0;font-size:13.5px;background:var(--ok-bg);border-radius:10px;padding:8px 10px}.mquota .cu-sent svg{width:16px;height:16px;flex:none;margin-top:2px}
.mquota .cu-fine{margin:0;font-size:12.5px;color:var(--muted);line-height:1.5}
@media (max-width:420px){.mquota .cu-g{grid-template-columns:minmax(0,1fr)}}
/* Bài tập · nộp bài · đồ án cuối khoá (DT-68 / DT-69 / DT-73 — anh Tâm duyệt 17/10/2026). Mã: public/js/task.js */
.tkg{font-size:11.5px;font-weight:700;border-radius:6px;padding:1px 7px;white-space:nowrap;background:var(--hair);color:var(--muted)}
.tkg.warn{background:var(--warn-bg);color:var(--warn)}.tkg.ok{background:var(--ok-bg);color:var(--ok)}.tkg.bad{background:var(--bad-bg);color:var(--bad)}
.toc .l.hw .st{border-style:dashed;border-color:#9fb2ca}
.toc .l.hw>.ic{color:var(--blue-2)}
.toc .l.hw.lk>.ic{color:#9fb2ca}
.toc .l.hw small .ic{width:14px;height:14px;color:#9fb2ca}
.toc .ch.da{color:#7a5717}.toc .ch.da>.ic{color:#b8893b;transform:none}
.toc .ch.da small{color:#7a5717}
.toc .ch.da .tkg{margin-left:auto}
.toc .ch.qz{color:#7b8ba3}.toc .ch.qz>.ic{transform:none}
.toc .ch.qz.fin{color:var(--ok)}
.toc .ch.da.lk{color:#7b8ba3}.toc .ch.da.lk>.ic{color:#9fb2ca}
.tkleg{margin-top:auto;padding:12px 18px 14px;border-top:1px solid var(--hair);font-size:12.5px;color:var(--muted);display:grid;gap:7px}
.tkleg b{color:var(--ink);font-size:12.5px}
.tkleg div{display:flex;gap:6px;flex-wrap:wrap}
.ltitle p .tkjump{display:inline-flex;gap:6px;align-items:center;color:var(--blue-2);font-weight:600}
.les.hw .st{border-style:dashed;border-color:#9fb2ca}
.ty.task{background:var(--build-bg);color:var(--blue-2)}
.les .tkg{justify-self:end}
/* Khối bài tập */
.tkwrap{margin-top:16px}
.tkp{padding:0;overflow:hidden;scroll-margin-top:72px}
.tkhd{display:flex;align-items:center;gap:12px;padding:14px 20px;border-bottom:1px solid var(--hair);background:linear-gradient(#f5f9ff,#fff)}
.tkhd>div:not(.rt){min-width:0}
.tkhd h2{font-size:18px;font-weight:700}
.tkhd small{display:block;font-size:13px;color:var(--muted);margin-top:2px}
.tkhd .rt{margin-left:auto;text-align:right;font-size:12.5px;color:var(--muted);line-height:1.45;display:grid}
.tkhd .rt b{color:var(--ink)}
.tktile{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;background:var(--build-bg);color:var(--blue-2);flex:none;font-style:normal}
.tktile .ic{width:21px;height:21px}
.tktile.warn{background:var(--warn-bg);color:var(--warn)}.tktile.ok{background:var(--ok-bg);color:var(--ok)}.tktile.bad{background:var(--bad-bg);color:var(--bad)}.tktile.gold{background:#f7ecd6;color:#7a5717}.tktile.gray{background:var(--hair);color:var(--muted)}
.tktile.sm{width:32px;height:32px;border-radius:9px}.tktile.sm .ic{width:17px;height:17px}
.qcard>.tktile{margin-bottom:10px}
.tkmt{display:none}
.tkb{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.tkb>div{padding:16px 20px 18px;min-width:0}
.tkb>.tkr{border-left:1px solid var(--hair);background:#fbfdff}
.tkh{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin:18px 0 8px;display:flex;gap:8px;align-items:center}
.tkh .ic{width:16px;height:16px}
.tkl>.tkh:first-child,.tkr>.tkh:first-child,.tkform>.tkh:first-child{margin-top:0}
.tkh em{font-style:normal;text-transform:none;letter-spacing:0;font-weight:600;margin-left:auto;font-size:12.5px;white-space:nowrap}
.tkbody.prose{border:0;padding:0;background:none;font-size:14.5px;line-height:1.6;border-radius:0}
.tkcrit li{display:flex;gap:10px;align-items:flex-start;font-size:14px;padding:4px 0;line-height:1.45}
.tkcrit i{width:20px;height:20px;border-radius:6px;border:2px solid var(--line);flex:none;display:grid;place-items:center;margin-top:1px;background:#fff;color:#fff;font-style:normal}
.tkcrit i .ic{width:12px;height:12px;stroke-width:3}
.tkcrit .y i{background:var(--ok);border-color:var(--ok)}
.tkcrit .n i{background:var(--bad);border-color:var(--bad)}
.tkcrit .n{color:var(--bad);font-weight:600}
.tkcrit.sm li{font-size:13px;padding:2px 0}.tkcrit.sm i{width:17px;height:17px;border-radius:5px}.tkcrit.sm i .ic{width:10px;height:10px}
.tkcrit.mo{display:none}
.tkatt li.lk b{color:var(--muted)}
.tkatt li.lk .ty{background:var(--hair);color:var(--muted)}
.tkatt li.lk .dl{background:var(--hair);border-color:transparent;color:var(--muted)}
.tkatt li.lk small{display:flex;gap:5px;align-items:center}.tkatt li.lk small .ic{width:13px;height:13px}
.tkdrop{border:1.5px dashed #9fc2f5;border-radius:12px;background:#f5f9ff;padding:16px;display:flex;gap:14px;align-items:center;cursor:pointer}
.tkdrop:hover,.tkdrop.over{border-color:var(--blue);background:#eaf3ff}
.tkdrop:focus-within{outline:2px solid var(--blue);outline-offset:2px}
.tkdrop>.ic{width:28px;height:28px;color:var(--blue-2)}
.tkdrop b{display:block;font-size:15px}.tkdrop b u{text-decoration:none;color:var(--blue-2)}
.tkdrop small{font-size:12.5px;color:var(--muted)}
.tkbig{display:none}
.tkfiles{margin-top:10px;display:grid;gap:8px}
.tkf{display:grid;grid-template-columns:58px minmax(0,1fr) auto auto;gap:10px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:10px;padding:6px 8px 6px 6px}
.tkf.err{border-color:#f6d3cf;background:#fff7f6}
.tkth{width:58px;height:40px;border-radius:6px;overflow:hidden;border:1px solid var(--hair);display:grid;place-items:center;background:var(--build-bg);color:var(--blue-2)}
.tkth img{width:100%;height:100%;object-fit:cover;display:block}
.tkth .ic{width:20px;height:20px}
.tkf b{font-size:14px;font-weight:600;display:block;line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tkf small{font-size:12.5px;color:var(--muted);display:flex;gap:4px;align-items:center;flex-wrap:wrap}
.tkf small .ok,.tkf small .bad{display:inline-flex;gap:4px;align-items:center;font-weight:600}
.tkf small .ok{color:var(--ok)}.tkf small .bad{color:var(--bad)}
.tkf small .ic{width:13px;height:13px}
.tkf .btn.sm{min-height:30px;padding:0 9px;font-size:12.5px}
.tkf>.tkx:last-child{grid-column:4}
.tkx{width:32px;height:32px;border-radius:8px;display:grid;place-items:center;color:var(--muted);border:0;background:none}
.tkx:hover{background:var(--hair);color:var(--ink)}
.tkx .ic{width:16px;height:16px}
.tkfiles.ro .tkf{grid-template-columns:58px minmax(0,1fr) auto}
.tkfiles.ro .tkf>.tkx:last-child{grid-column:auto}
.tkmini{display:block;height:5px;border-radius:3px;background:var(--hair);margin-top:5px;overflow:hidden;max-width:240px}
.tkmini i{display:block;height:100%;background:var(--blue);transition:width .2s}
.tkadd label{display:flex;gap:8px;align-items:center;justify-content:center;min-height:40px;border:1.5px dashed #9fc2f5;border-radius:10px;background:#f5f9ff;color:var(--blue-2);font-size:13.5px;font-weight:600;cursor:pointer}
.tkadd .ic{width:16px;height:16px}
.tkfld{display:grid;gap:6px;margin-top:12px}
.tkfld>span{font-size:13.5px;font-weight:600}.tkfld>span em{font-style:normal;font-weight:500;color:var(--muted)}
.tkact{display:flex;align-items:center;gap:10px;margin-top:14px}
.tkact .tkhint{font-size:12.5px;color:var(--muted);margin-right:auto;line-height:1.45}
.tkact .tkhint b{color:var(--ink)}
.tkact .tkcount{display:none}
.tkact .btn{flex:none}
.tkst{display:flex;gap:12px;align-items:flex-start;border-radius:12px;padding:12px 14px;background:#fff;border:1px solid var(--line);margin-bottom:10px}
.tkst b{display:block;font-size:15px}
.tkst p{font-size:13.5px;color:var(--muted);margin-top:2px;line-height:1.5}
.tkst.warn{border-color:var(--warn-line)}.tkst.ok{border-color:#b5dcc6}
.tkst .tktile{width:34px;height:34px;border-radius:9px}.tkst .tktile .ic{width:18px;height:18px}
.tkst p.tkdue{display:flex;gap:6px;align-items:center;background:var(--warn-bg);color:#6b4a0a;border-radius:8px;padding:5px 9px;margin-top:8px}
.tkdue .ic{width:14px;height:14px}.tkst .tkdue b{display:inline;font-size:13.5px;color:var(--ink)}
.tknote{font-size:13.5px;color:var(--muted);margin:0 0 6px}.tknote b{color:var(--ink)}
.tkq{display:grid;grid-template-columns:30px minmax(0,1fr);gap:10px;border-radius:12px;padding:10px 12px;font-size:13.5px;line-height:1.55;margin-bottom:10px;border:1px solid #dbe7f7;background:#f7faff}
.tkq .av{width:30px;height:30px;font-size:11px}
.tkq b{display:block;font-size:13px;color:var(--muted);font-weight:600}
.tkq b span{color:var(--ink)}
.tkq p{white-space:pre-line}
.tkq.bad{background:#fff7f6;border-color:#f6d3cf}
.tkq.ok{background:#f3fbf6;border-color:#cfe9da}
.tkbtns{margin:12px 0 0}
.tkfine{display:flex;gap:6px;align-items:center;font-size:12.5px;color:var(--muted);margin-top:6px}
.tkfine .ic{width:14px;height:14px}
.tkhist{display:grid;font-size:13px}
.tkhist li{display:flex;gap:8px;align-items:center;padding:6px 0;border-top:1px solid var(--hair)}
.tkhist li:first-child{border-top:0}
.tkhist li b{font-weight:600}
.tkhist li span:last-child{color:var(--muted);margin-left:auto;white-space:nowrap}
.tkhist .pill{font-size:11px;padding:0 8px;line-height:18px}
.tklock{display:flex;gap:12px;align-items:center}
.tklock b{display:block}.tklock p{font-size:13.5px;color:var(--muted)}
.tklock .btn{margin-left:auto}
/* Trang bài tập / đồ án (DT-69) + thẻ đồ án, điều kiện chứng chỉ trên trang khoá */
.tkpage{padding-top:16px;padding-bottom:40px}
.tkcrumb{display:flex;gap:6px;align-items:center;font-size:14px;font-weight:600;color:var(--muted);margin-bottom:12px;flex-wrap:wrap}
.tkcrumb a{display:inline-flex;gap:6px;align-items:center}
.tkcrumb a:hover{color:var(--blue)}
.tkcrumb .ic{width:14px;height:14px}
.tkcrumb a .ic{transform:rotate(180deg)}
.tkcrumb .tkprog{display:none}
.tkg69{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:18px;align-items:start}
.tkside{display:grid;gap:16px}
.tkcond h3.h .pill{margin-left:auto}
.tkconds li{display:grid;grid-template-columns:30px minmax(0,1fr);gap:12px;padding:12px 0;border-top:1px solid var(--hair);align-items:flex-start}
.tkconds li:first-child{border-top:0}
.tkconds i{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-style:normal;color:var(--muted);background:var(--hair)}
.tkconds i .ic{width:15px;height:15px;stroke-width:2.6}
.tkconds li.ok i{background:var(--ok);color:#fff}
.tkconds li.re i{background:var(--bad);color:#fff}
.tkconds b{display:flex;gap:8px;align-items:center;font-size:15px;flex-wrap:wrap}
.tkconds small{display:block;font-size:13px;color:var(--muted);margin-top:2px;line-height:1.45}
.tkconds a{color:var(--blue-2);font-weight:600;font-size:13px}
.tkcert{display:flex;gap:12px;align-items:center;margin-top:6px;padding:12px;border-radius:12px;background:#f7f9fc;border:1px dashed var(--line);font-size:13px;color:var(--muted);line-height:1.45}
.tkcert .cm{width:72px;height:50px;border-radius:6px;background:#fff;border:1px solid var(--line);flex:none;display:grid;place-items:center;color:#9fb2ca;position:relative}
.tkcert .cm::before{content:"";position:absolute;inset:5px;border:1px solid #d9c49a;border-radius:2px}
.tkcert b{color:var(--ink)}
.tkcert a{color:var(--blue);font-weight:600}
.tkcert.ok{border-style:solid;border-color:#cfe9da;background:#f3fbf6}
.tklist ul{display:grid}
.tklist li{border-top:1px solid var(--hair)}
.tklist li:first-child{border-top:0}
.tklist li a{display:flex;gap:10px;align-items:center;padding:10px 0}
.tklist li a>span:not(.tkg){min-width:0;flex:1}
.tklist li b{display:block;font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tklist li small{font-size:12.5px;color:var(--muted)}
.tklist li.more a{font-size:13px;color:var(--blue-2);font-weight:600}
.tkprojw{margin-top:18px}
.tkproj .tksub{font-size:13.5px;color:var(--muted);margin:-4px 0 6px}
@media (max-width:1180px){
  .tkg69{grid-template-columns:minmax(0,1fr) 330px}
  .tkb{grid-template-columns:minmax(0,1fr)}
  .tkb>.tkr{border-left:0;border-top:1px solid var(--hair)}
}
@media (max-width:900px){
  .tkwrap{margin:12px 16px 0}
  .tkg69{grid-template-columns:minmax(0,1fr)}
  .tkhd{flex-wrap:wrap;padding:12px 16px}
  .tkhd .rt{margin-left:52px;text-align:left;flex-basis:100%}
  .tkb>div{padding:14px 16px 16px}
  .tklock{flex-wrap:wrap}
  .tkleg{display:none}
}
/* Điện thoại (DT-73): thẻ Yêu cầu / Nộp bài / Mục lục, hai ô lớn chụp ảnh / chọn tệp, ô tệp dạng lưới, nút Nộp cố định đáy */
@media (max-width:640px){
  .tkdrop{display:none}
  .tkbig{display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .tkbig label{display:grid;justify-items:center;gap:4px;padding:16px 8px;border:1.5px dashed #9fc2f5;background:#f5f9ff;border-radius:12px;font-weight:600;font-size:14px;text-align:center;cursor:pointer}
  .tkbig label:only-child{grid-column:1/3}
  .tkbig .ic{width:26px;height:26px;color:var(--blue-2)}
  .tkbig small{font-weight:500;font-size:12px;color:var(--muted)}
  .tkfiles:not(.ro){grid-template-columns:1fr 1fr}
  .tkfiles:not(.ro) .tkf{grid-template-columns:minmax(0,1fr);padding:0;gap:0;position:relative;overflow:hidden}
  .tkfiles:not(.ro) .tkth{width:100%;height:84px;border:0;border-bottom:1px solid var(--hair);border-radius:0}
  .tkfiles:not(.ro) .tkf>div{padding:5px 8px}
  .tkfiles:not(.ro) .tkf b{font-size:12.5px}
  .tkfiles:not(.ro) .tkf small{font-size:11.5px}
  .tkfiles:not(.ro) .tkmini{max-width:none}
  .tkfiles:not(.ro) .tkf>.tkx:last-child{position:absolute;right:5px;top:5px;width:26px;height:26px;border-radius:50%;background:#0b1f3dcc;color:#fff;grid-column:auto}
  .tkfiles:not(.ro) .tkf .btn.sm{margin:0 8px 6px}
  .tkadd label{min-height:118px;flex-direction:column;height:100%}
  .tkadd .ic{width:22px;height:22px}
  .tkp.tabbed{border-radius:0;border-inline:0;margin-inline:-16px}
  .tkp.tabbed .tkhd{background:none;border:0;padding:4px 16px 0}
  .tkp.tabbed .tkhd>.tktile,.tkp.tabbed .tkhd>.pill,.tkp.tabbed .tkhd .rt span:first-child{display:none}
  .tkp.tabbed .tkhd .rt{margin:0;font-size:13px}
  .tkp.tabbed .tkhd h2{font-size:20px}
  .tkmt{display:flex;margin:6px 0 0;padding:0 8px}
  .tkmt a{min-height:46px;padding:0 10px;font-size:14.5px}
  .tkp.tabbed.m-sub .tkl,.tkp.tabbed.m-req .tkr{display:none}
  .tkp.tabbed .tkr{border-top:0}
  .tkp.tabbed .tkcrit.mo{display:grid;margin-bottom:10px}
  .tkp.tabbed .tkact{position:fixed;left:0;right:0;bottom:0;z-index:30;margin:0;background:#fff;border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom))}
  .tkp.tabbed .tkact .tkhint{display:none}
  .tkp.tabbed .tkact .tkcount{display:block;font-size:12.5px;color:var(--muted);line-height:1.35;white-space:nowrap}
  .tkp.tabbed .tkact .tkcount b{color:var(--ink);font-weight:600}
  .tkp.tabbed .tkact .btn{flex:1;min-height:46px}
  .k-app:has(.tkp.tabbed) .tabbar{display:none}
  .k-app:has(.tkp.tabbed .tkact) #app{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .tkcrumb{font-size:15.5px;color:var(--ink);margin:0;padding:6px 0}
  .tkcrumb a .ic{width:20px;height:20px}
  .tkcrumb>.ic,.tkcrumb .chn{display:none}
  .tkcrumb .tkprog{display:block;margin-left:auto;font-size:13px;color:var(--muted)}
  .tkpage{padding-top:4px}
  .tkpage .tkside{margin-top:12px}
}