:root{--g:#ffc93c;--gd:#8a5a00;--ink:#4a3200;--g2:#fff6d6;--g3:#ffe38a;--bg:#fffaf0;--tx:#33291a;--mu:#8e8671;--bd:#f3e8c4;--rd:#ff6b81;--or:#ffb347;--r:20px;--sh:0 6px 18px #f0d27a3d}
*{box-sizing:border-box;margin:0}
body{font-family:'Quicksand','Nunito','Segoe UI',system-ui,sans-serif;background:var(--bg);color:var(--tx);font-size:14px}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:2px solid var(--g);outline-offset:2px}
.top{height:56px;background:#fff;border-bottom:1px solid var(--bd);display:flex;align-items:center;gap:14px;padding:0 20px;position:sticky;top:0;z-index:20}
.logo{font-weight:700;font-size:20px;color:var(--gd)}.logo small{font-size:13px;color:var(--mu)}
.grow{flex:1}.avatar{width:34px;height:34px;border-radius:50%;background:var(--g);color:var(--ink);display:grid;place-items:center;font-weight:700}
.seg{display:flex;background:var(--bg);border-radius:20px;padding:3px}
.seg button{padding:5px 14px;border-radius:16px;font-weight:600;color:var(--mu)}.seg .on{background:var(--g);color:var(--ink)}
.shell{display:flex;min-height:calc(100vh - 56px)}
.side{width:84px;background:#fff;border-right:1px solid var(--bd);padding:12px 8px;display:flex;flex-direction:column;gap:6px;position:sticky;top:56px;height:calc(100vh - 56px)}
.side a{display:flex;flex-direction:column;align-items:center;gap:2px;padding:9px 2px;border-radius:10px;font-size:12px;color:var(--mu);text-decoration:none;font-weight:600}
.side a i{font-style:normal;font-size:19px}.side a:hover{background:var(--g2)}.side a.on{background:var(--g);color:var(--ink)}
.main{flex:1;padding:22px 28px;min-width:0}
h1{font-size:22px;margin-bottom:14px}h2{font-size:17px;margin:20px 0 10px}
.btn{background:var(--g);color:var(--ink);padding:8px 16px;border-radius:8px;font-weight:700}.btn:hover{filter:brightness(.93)}
.btn.o{background:#fff;color:var(--gd);border:1px solid var(--g)}.btn.s{background:#eef1ef;color:var(--tx);padding:5px 10px;font-size:13px}
.tabs{display:flex;justify-content:center;gap:34px;border-bottom:1px solid var(--bd);margin-bottom:20px;background:#fff;border-radius:var(--r) var(--r) 0 0}
.tabs button{padding:14px 6px;font-weight:700;color:var(--mu);border-bottom:3px solid transparent}.tabs .on{color:var(--gd);border-color:var(--g)}
.tabs.l{justify-content:flex-start;padding:0 16px}
.search{display:flex;gap:10px;align-items:center;background:#fff;border:2px solid var(--g3);border-radius:10px;padding:9px 14px;max-width:760px;margin:0 auto 22px}
.search:focus-within{border-color:var(--g)}.search input{flex:1;border:0;outline:0;background:none}
.types{display:flex;justify-content:center;gap:30px;flex-wrap:wrap;margin-bottom:22px}
.types button{display:flex;flex-direction:column;align-items:center;gap:8px;font-size:13px;font-weight:600}.types button.on span{box-shadow:0 0 0 3px var(--g3)}
.types span{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;color:#fff;text-shadow:0 1px 2px #0004;font-size:20px}
.card{background:#fff;border:1px solid var(--bd);border-radius:var(--r);padding:16px}
.row{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--bd);border-radius:var(--r);padding:12px 16px;margin-bottom:10px}
.row .th{width:46px;height:46px;border-radius:8px;background:linear-gradient(135deg,#d9f0e3,#f7e7b8);display:grid;place-items:center;font-size:22px;flex:none}
.row .in{flex:1;min-width:0}.row b{display:block}.row small,.mu{color:var(--mu);font-size:12px}
.pill{padding:4px 12px;border-radius:14px;font-size:12px;font-weight:700;background:var(--g2);color:var(--gd);white-space:nowrap}
.pill.r{background:#fdeaea;color:var(--rd)}.pill.y{background:#fff3d6;color:#b7791f}.pill.b{background:#e5efff;color:#2a6bd6}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.cls{display:flex;gap:12px;cursor:pointer}.cls:hover{border-color:var(--g)}
.cls .th{width:96px;height:80px;border-radius:8px;display:grid;place-items:center;font-size:34px;flex:none}
.bar{display:flex;gap:10px;align-items:center;margin-bottom:12px;flex-wrap:wrap}
.bar input[type=search],.bar select,input.f,select.f,textarea.f{padding:8px 12px;border:1px solid var(--bd);border-radius:8px;background:#fff;width:100%}
.bar input[type=search],.bar select{width:auto}.bar .sp{flex:1}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--r);overflow:hidden;border:1px solid var(--bd)}
th{background:var(--g2);text-align:left;padding:11px 12px;font-size:13px}td{padding:11px 12px;border-top:1px solid var(--bd);vertical-align:middle}
tr:hover td{background:#fafcfb}.tw{overflow-x:auto}
.sw{display:inline-block;vertical-align:middle;width:38px;height:22px;border-radius:12px;background:#cfd6d2;position:relative;transition:.2s;flex:none}.sw::after{content:'';position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#fff;transition:.2s}
.sw.on{background:var(--g)}.sw.on::after{left:19px}
.two{display:flex;gap:16px}.two>.folders{width:210px;flex:none}.two>div:last-child{flex:1;min-width:0}
.folders{background:#fff;border:1px solid var(--bd);border-radius:var(--r);padding:8px;align-self:flex-start}
.folders button{display:block;width:100%;text-align:left;padding:9px 10px;border-radius:8px;font-weight:600}.folders .on,.folders button:hover{background:var(--g2)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;margin-bottom:14px}
.stat b{font-size:24px;display:block;margin-top:4px}.stat small{color:var(--mu)}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:14px}@media(max-width:900px){.cols{grid-template-columns:1fr}.two{flex-direction:column}.two>.folders{width:auto}}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.chips button{padding:7px 14px;border:1px solid var(--bd);background:#fff;border-radius:8px;font-weight:600}.chips .on{background:var(--g);color:var(--ink);border-color:var(--g)}
.modal{position:fixed;inset:0;background:#0007;display:none;place-items:center;z-index:50;padding:16px}.modal.on{display:grid}
.box{background:#fff;border-radius:14px;width:min(560px,100%);max-height:90vh;overflow:auto;padding:22px}.box h3{margin-bottom:14px;display:flex;justify-content:space-between}
.fg{margin-bottom:12px}.fg label{display:block;font-weight:700;margin-bottom:4px;font-size:13px}.acts{display:flex;justify-content:flex-end;gap:10px;margin-top:16px}
.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,30px);background:var(--tx);color:#fff;padding:11px 20px;border-radius:10px;opacity:0;transition:.25s;z-index:60;pointer-events:none}.toast.on{opacity:1;transform:translate(-50%,0)}
.ai{position:fixed;right:18px;bottom:90px;background:var(--g);color:var(--ink);padding:10px 14px;border-radius:20px;font-weight:700;box-shadow:0 4px 14px #f5b30166}
.qs{display:flex;gap:6px;flex-wrap:wrap}.qs span{width:30px;height:30px;border-radius:6px;display:grid;place-items:center;font-weight:700;color:#fff}
.ok{background:#10c98a}.no{background:var(--rd)}.em{background:#b6bdb9}
mark.g{background:#c8f0d6}mark.y{background:#fff2a8}mark.r{background:#ffd0d0}
.tile{display:flex;flex-direction:column;gap:20px;cursor:pointer}.tile i{font-style:normal;width:44px;height:44px;border-radius:10px;display:grid;place-items:center;font-size:22px;color:#fff}
.pack{text-align:center}.pack .big{font-size:56px;margin:10px 0}.pack .price{border:1px solid var(--bd);border-radius:8px;padding:8px;margin:10px 0;font-weight:700}
@media(max-width:700px){.main{padding:14px}.side{width:60px}.side a{font-size:10px}.top .seg button{padding:5px 8px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
.op{display:flex;gap:10px;align-items:center;padding:10px 12px;border:1px solid var(--bd);border-radius:8px;margin-bottom:8px}.op.c{background:#dff7ea;border-color:#10c98a}.op.w{background:#fdeaea;border-color:var(--rd)}
.ex{background:#fff9e6;border-left:4px solid var(--g);padding:8px 12px;margin-top:8px;border-radius:6px;font-size:13px}
.box.wide{width:min(860px,100%)}textarea.f{resize:vertical}
.ed{position:fixed;inset:0;z-index:45;background:var(--bg);display:flex;flex-direction:column;color:var(--tx)}
.ed-top{display:flex;align-items:center;gap:10px;min-height:60px;padding:8px 16px;background:#fff;border-bottom:1px solid var(--bd)}
.ed-title{min-width:120px;flex:1;padding:8px 10px;border:1px solid var(--bd);border-radius:8px;font-weight:700}
.ed-dur{display:flex;align-items:center;gap:5px;white-space:nowrap}.ed-dur input{width:80px!important}
.ed-body{display:grid;grid-template-columns:78px minmax(270px,1fr) minmax(320px,1.3fr);gap:12px;padding:12px;min-height:0;flex:1}
.ed-rail,.ed-left,.ed-right{background:#fff;border:1px solid var(--bd);border-radius:var(--r);padding:12px;overflow:auto;min-width:0}
.ed-rail{display:flex;flex-direction:column;gap:8px}.ed-rail button{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 4px;border-radius:8px;font-size:12px}.ed-rail button.on,.ed-rail button:hover{background:var(--g2)}
.ed-rail i{font-style:normal;font-size:20px}.ed-h,.ed-ph,.ed-qh,.ed-q{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.ed-h{margin-bottom:10px}.ed-part,.ed-sec{border:1px solid var(--bd);border-radius:10px;padding:10px;margin-bottom:10px}.ed-sec{margin:8px 0 8px 12px;background:#fafcfb}
.ed-ph{margin-bottom:8px}.ed-ti{flex:1;min-width:110px;padding:7px;border:1px solid var(--bd);border-radius:7px;font-weight:700}
.ed-q{padding:8px;margin:6px 0;border:1px solid var(--bd);border-radius:8px;cursor:pointer}.ed-q.on{border-color:var(--g);background:var(--g2)}.ed-qt{max-width:170px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ed-addrow{display:flex;gap:8px;align-items:center;margin-top:8px}.ed-add{max-width:240px}.ed-qh{margin-bottom:12px}.ed-opt{display:flex;align-items:center;gap:7px;margin:6px 0}.ed-opt input.f{min-width:0}.ed-blank{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:9px;background:var(--g2);border-radius:8px;margin:7px 0}.ed-blank input.f{max-width:280px}.ed-blank.col{display:block}
.ed-nav{display:flex;gap:12px;overflow:auto;padding:8px 14px;background:#fff;border-top:1px solid var(--bd)}.ed-pn{display:flex;align-items:center;gap:5px;white-space:nowrap}.ed-pn button{width:28px;height:28px;border-radius:50%;background:var(--bg)}.ed-pn button.on{background:var(--g);font-weight:700}
.ed-empty{height:100%;display:grid;place-items:center;text-align:center;color:var(--mu);padding:25px}.ed-mod{position:fixed;inset:0;z-index:2;background:#0007;display:grid;place-items:center;padding:16px}.ed-box{background:#fff;border-radius:14px;width:min(620px,100%);max-height:90vh;overflow:auto;padding:20px}.ed-box.wide{width:min(900px,100%)}.ed-box h3{display:flex;justify-content:space-between;margin-bottom:12px}
.ed-is{display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--bd);padding:10px 0}.ed-is>div{flex:1}.ed-lv{padding:12px;border-radius:9px;margin:8px 0}.ed-lv.red{background:#fdeaea}.ed-lv.yellow{background:#fff3d6}.ed-lv.green{background:#e2f7eb}.ed-isl{max-height:55vh;overflow:auto}
.ed-pv .qp{margin:12px 0}.ed-pv .q{margin:8px 0}.qtext{line-height:2.2}.qtext .blank{display:inline-block;width:min(180px,40vw);margin:3px;padding:5px;border:1px solid var(--bd);border-radius:6px}.dir{background:var(--g2);padding:10px;border-radius:8px;margin:8px 0}.sec{margin:10px 0 10px 18px;padding:10px;border-left:3px solid var(--g3)}
.ord .pool,.ord .ans{display:flex;gap:6px;flex-wrap:wrap;min-height:42px;padding:8px;margin:6px 0;border:1px dashed var(--bd);border-radius:8px}.tok{background:var(--g2);padding:6px 10px;border-radius:7px}.mt{margin-top:8px}.bk{padding:2px 6px;border-radius:5px}.bk.ok{background:#dff7ea}.bk.no{background:#fdeaea}.okc{background:#dff7ea}.noc{background:#fdeaea}
@media(max-width:850px){.ed-body{grid-template-columns:58px 1fr}.ed-right{grid-column:2}.ed-rail{grid-row:1 / span 2}.ed-top{flex-wrap:wrap}.ed-title{order:1;flex-basis:45%}}
@media(max-width:600px){.ed-body{grid-template-columns:1fr;padding:8px}.ed-rail{grid-row:auto;grid-column:auto;flex-direction:row}.ed-left,.ed-right{grid-column:auto}.ed-top{gap:6px;padding:7px}.ed-dur{font-size:12px}.ed-top .btn{padding:6px 8px;font-size:12px}}
/* ===== Nội dung của tôi: Flashcard · Luyện nói · Tài liệu · Bài viết · Chương trình ===== */
.cat{display:flex;align-items:center;gap:6px;padding:9px 10px;border-radius:8px;font-weight:600;cursor:pointer}.cat:hover,.cat.on{background:var(--g2)}
.cat .cn{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cat .cm{width:26px;height:26px;border-radius:6px;opacity:0;font-weight:700}.cat:hover .cm,.cat:focus-within .cm,.cat .cm:focus-visible{opacity:1}.cat .cm:hover{background:var(--g3)}
.ddm{position:fixed;z-index:70;background:#fff;border:1px solid var(--bd);border-radius:10px;box-shadow:0 8px 24px #0002;padding:6px;min-width:190px}
.ddm button{display:block;width:100%;text-align:left;padding:8px 10px;border-radius:6px;font-weight:600}.ddm button:hover,.ddm button:focus-visible{background:var(--g2)}.ddm hr{border:0;border-top:1px solid var(--bd);margin:4px 0}
.m-info{display:flex;align-items:center;gap:12px}.m-th{width:56px;height:38px;border-radius:6px;object-fit:cover;flex:none;background:var(--g2)}.m-th.ph{display:grid;place-items:center;font-size:18px;font-weight:700;color:var(--gd)}
.pgn{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-top:12px}.btn.s.cur{background:var(--g);color:var(--ink)}.btn:disabled{opacity:.45;cursor:not-allowed}
.advp{margin-bottom:12px}.busy{opacity:.55;pointer-events:none}
.pg{position:fixed;inset:0;z-index:40;background:var(--bg);overflow:auto}.pg-in{max-width:1180px;margin:0 auto;padding:20px 24px 60px}
.crumb{font-size:13px;color:var(--mu);margin-bottom:12px}.crumb button{color:var(--gd);font-weight:600}.crumb button:hover{text-decoration:underline}
.doc-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(260px,1fr);gap:14px}@media(max-width:900px){.doc-grid{grid-template-columns:1fr}}
.m-pv{max-width:100%;max-height:240px;border-radius:8px;display:block}.m-pdf{width:100%;height:380px;border:1px solid var(--bd);border-radius:8px;margin-top:8px}.m-yt{width:100%;aspect-ratio:16/9;border:0;border-radius:8px;margin-top:8px}
.chip{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:6px 0}
.tg{display:flex;align-items:center;gap:8px;font-weight:600}
.rte{border:1px solid var(--bd);border-radius:8px;background:#fff}.rte-tb{display:flex;gap:2px;flex-wrap:wrap;padding:6px;border-bottom:1px solid var(--bd);background:var(--g2);border-radius:8px 8px 0 0}
.rb{min-width:32px;height:30px;padding:0 8px;border-radius:6px}.rb:hover{background:var(--g3)}.rsep{width:1px;background:var(--bd);margin:3px 4px}
.rte-ed{min-height:260px;max-height:60vh;overflow:auto;padding:12px;outline:0}.rte-ed:focus{box-shadow:inset 0 0 0 2px var(--g3)}
.rich{line-height:1.7;overflow-wrap:anywhere}.rich img{max-width:100%;height:auto}.rich table{width:auto;max-width:100%;margin:8px 0}.rich th,.rich td{border:1px solid var(--bd);padding:6px 10px}.rich iframe{width:100%;aspect-ratio:16/9;border:0}.rich h2{margin:14px 0 8px}.rich ul,.rich ol{padding-left:24px}
.pklist{max-height:260px;overflow:auto;border:1px solid var(--bd);border-radius:8px;padding:6px}.pk{display:flex;gap:8px;align-items:center;padding:5px}
.fl-wrap{display:grid;place-items:center;margin:8px 0 14px}.fl{width:min(460px,100%);min-height:220px;border-radius:16px;border:2px solid var(--g3);background:linear-gradient(135deg,#fffdf6,var(--g2));display:grid;place-items:center;align-content:center;gap:8px;padding:20px;text-align:center}
.fl.back{background:linear-gradient(135deg,#eefaf3,#fff)}.fl-w{font-size:34px;font-weight:700}.fl-m{font-size:26px;font-weight:700}.fl-p,.fl-x{color:var(--mu)}.fl-h{font-size:12px;color:var(--mu)}.fl img{max-height:120px;border-radius:8px}
.talk{display:flex;flex-direction:column;gap:8px}.bub{max-width:80%;padding:10px 14px;border-radius:14px;display:flex;flex-direction:column;gap:4px}.bub.bai{background:var(--g2);align-self:flex-start}.bub.hv{background:#e5efff;align-self:flex-end}.bub small{color:var(--mu)}
table.imp input.f{min-width:110px}table.imp tr.bad td{background:#fdeaea}

/* ===== Giao diện pastel – tone vàng, bo tròn, thân thiện ===== */
body{background:radial-gradient(circle at 0 0,#fff2bf55,transparent 40%),radial-gradient(circle at 100% 20%,#ffd9e855,transparent 35%),var(--bg);font-weight:500}
.top{background:#fffdf5ee;backdrop-filter:blur(6px);border-bottom:1px solid var(--bd);box-shadow:0 2px 12px #f0d27a22}
.logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:21px;color:#a36a00;letter-spacing:.2px}
.logo>span:first-child{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:14px;background:linear-gradient(135deg,#fff0a8,#ffc93c);box-shadow:0 3px 0 #efb320,0 6px 12px #ffc93c66;font-size:19px;transform:rotate(-6deg)}
.logo small{font-size:13px;color:var(--mu);font-weight:600}
.avatar{background:linear-gradient(135deg,#fff0a8,#ffc93c);box-shadow:0 3px 8px #ffc93c66}
.side{background:#fffdf5;border-right:1px solid var(--bd);gap:8px;padding:14px 8px}
.side a{border-radius:18px;padding:10px 2px;transition:transform .15s,background .15s}.side a i{font-size:22px}.side a:hover{background:var(--g2);transform:translateY(-2px)}
.side a.on{background:linear-gradient(135deg,#ffe48a,#ffc93c);box-shadow:0 4px 0 #efb320,0 8px 14px #ffc93c55;color:var(--ink)}
.btn{border-radius:999px;padding:9px 20px;background:linear-gradient(180deg,#ffd964,#ffc22e);box-shadow:0 3px 0 #e8a91a,0 6px 12px #ffc93c44;transition:transform .12s,box-shadow .12s,filter .12s}
.btn:hover{filter:brightness(1.03);transform:translateY(-1px)}.btn:active{transform:translateY(2px);box-shadow:0 1px 0 #e8a91a}
.btn.o{background:#fffdf3;border:2px solid var(--g);box-shadow:0 2px 0 #f3d983;color:var(--gd)}
.btn.s{background:#fff3cc;color:#6b4a00;padding:6px 13px;box-shadow:none;border-radius:999px}.btn.s:hover{background:#ffe9a6}
.btn.s.cur{background:var(--g);box-shadow:0 2px 0 #e8a91a}
.btn:disabled{box-shadow:none;transform:none}
.card,.row,.folders,.stat{border-radius:var(--r);border:1px solid var(--bd);box-shadow:var(--sh);background:#fffffe}
.row{transition:transform .15s,box-shadow .15s}.row:hover{transform:translateY(-1px)}
.row .th{border-radius:16px;background:linear-gradient(135deg,#fff1b8,#ffd9e8)}
.tabs{background:#fffdf5;border-radius:999px;border:1px solid var(--bd);box-shadow:var(--sh);padding:0 14px;gap:26px}.tabs button{border-bottom-width:4px;border-radius:2px}
.search{border-radius:999px;border:2px solid var(--g3);background:#fffffe;box-shadow:var(--sh)}
.bar input[type=search],.bar select,input.f,select.f,textarea.f{border-radius:14px;border:2px solid var(--bd);background:#fffffe}
input.f:focus,select.f:focus,textarea.f:focus{border-color:var(--g);outline:0;box-shadow:0 0 0 4px #ffc93c33}
table{border-radius:var(--r);border:1px solid var(--bd);box-shadow:var(--sh)}th{background:linear-gradient(180deg,#fff6d6,#ffeeb3);color:#6b4a00}tr:hover td{background:#fffbea}
.pill{border-radius:999px;background:#fff0b8}.pill.r{background:#ffe0e6}.pill.y{background:#fff0c8}.pill.b{background:#dcebff}
.types{gap:26px}.types button{transition:transform .18s}.types button:hover{transform:translateY(-4px)}
.types span{width:58px;height:58px;border-radius:22px;font-size:27px;color:inherit;text-shadow:none;box-shadow:0 5px 0 #0000000f,0 8px 16px #0000001a;transform:rotate(-4deg)}
.types button:nth-child(even) span{transform:rotate(4deg)}.types button.on span{box-shadow:0 0 0 4px var(--g),0 8px 16px #0000001a}
.backbar{align-items:center}.backbar .bdg{display:grid;place-items:center;width:42px;height:42px;border-radius:15px;font-size:22px;box-shadow:0 3px 8px #0000001a}
.modal .box,.ed-box{border-radius:26px;box-shadow:0 20px 50px #5a3d0033}
.sw{width:44px;height:26px;background:#e8e2d0}.sw::after{width:20px;height:20px;top:3px;left:3px;box-shadow:0 2px 4px #0003}.sw.on::after{left:21px}
.toast{border-radius:999px;background:#4a3200;box-shadow:0 8px 20px #4a320044}
.ai{border-radius:999px;background:linear-gradient(180deg,#ffd964,#ffc22e);box-shadow:0 4px 0 #e8a91a,0 8px 16px #ffc93c55}
.cat{border-radius:14px}.cat.on{background:linear-gradient(135deg,#fff0b8,#ffe48a)}
.ddm{border-radius:18px;border:1px solid var(--bd)}.ddm button{border-radius:12px}
.pg{background:radial-gradient(circle at 100% 0,#ffd9e844,transparent 35%),var(--bg)}
.lnk{font-weight:700;color:#7a4f00;text-align:left;font-size:inherit}.lnk:hover{color:#b87400;text-decoration:underline}
.kv{display:flex;gap:10px 22px;flex-wrap:wrap;background:#fff6d6;border-radius:16px;padding:10px 16px;margin-bottom:12px;color:#6b4a00}
.kv-t{width:100%}.kv-t th{width:190px;background:#fff6d6;font-weight:700}
.crumb button{border-radius:8px}.fl{border-radius:28px}.bub{border-radius:20px}
.rte,.rte-tb{border-radius:16px}.rte-tb{border-radius:16px 16px 0 0}.m-pv,.m-pdf,.m-yt{border-radius:16px}
.m-th{border-radius:12px}.pk{border-radius:10px}.pk:hover{background:#fff6d6}
@media(prefers-reduced-motion:reduce){.types button,.btn,.row,.side a{transition:none!important;transform:none!important}}

/* ===== Chuông thông báo · menu tài khoản · hộp xác nhận · flashcard phóng to ===== */
.pop{position:relative}
.ib{position:relative;width:40px;height:40px;border-radius:50%;font-size:20px;display:grid;place-items:center;transition:background .15s}.ib:hover,.ib[aria-expanded=true]{background:var(--g2)}
.bdg{position:absolute;top:-1px;right:-2px;min-width:19px;height:19px;padding:0 5px;border-radius:10px;background:var(--rd);color:#fff;font-style:normal;font-size:11px;font-weight:700;line-height:19px;text-align:center;box-shadow:0 0 0 2px #fff}.bdg[hidden]{display:none}
button.avatar{border:0;cursor:pointer;font-size:15px}
.np,.um{position:absolute;right:0;top:calc(100% + 10px);background:#fff;border:1px solid var(--bd);border-radius:20px;box-shadow:0 14px 34px #5a3d0030;z-index:60}.np[hidden],.um[hidden]{display:none}
.np{width:min(390px,calc(100vw - 20px));overflow:hidden}.um{width:250px;padding:8px}
.nph{display:flex;align-items:center;gap:8px;padding:12px 14px;border-bottom:1px solid var(--bd)}.npl{max-height:min(430px,62vh);overflow:auto}
.ni{display:flex;gap:10px;align-items:flex-start;padding:11px 14px;border-bottom:1px solid var(--bd);cursor:pointer}.ni:last-child{border-bottom:0}.ni:hover{background:var(--g2)}
.ni .dot{width:9px;height:9px;border-radius:50%;margin-top:6px;flex:none}.ni.un{background:#fffbea}.ni.un .dot{background:var(--rd)}
.ni .nt{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.ni .nt span{font-size:13px;overflow-wrap:anywhere}.ni .nt small{color:var(--mu);font-size:11px}
.um button{display:block;width:100%;text-align:left;padding:10px 12px;border-radius:12px;font-weight:600}.um button:hover,.um button:focus-visible{background:var(--g2)}.um hr{border:0;border-top:1px solid var(--bd);margin:4px 0}
.umh{display:flex;flex-direction:column;padding:8px 12px 10px;overflow-wrap:anywhere}
.acc{display:flex;gap:12px;align-items:center;margin-bottom:14px}.acc .av{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,#fff0a8,#ffc93c);display:grid;place-items:center;font-size:24px;font-weight:700;color:var(--ink);flex:none}
input.f:disabled{background:#faf6e8;color:var(--mu);cursor:not-allowed}
.cfm{position:fixed;inset:0;z-index:200;background:#0008;display:grid;place-items:center;padding:16px;animation:cfin .15s ease-out}
.cbox{background:#fff;border-radius:26px;width:min(410px,100%);padding:26px 24px 20px;text-align:center;box-shadow:0 20px 50px #5a3d0055}
.cic{width:66px;height:66px;margin:0 auto 12px;border-radius:50%;display:grid;place-items:center;font-size:30px;background:#fff0c8}
.cbox h3{display:block;margin-bottom:8px;font-size:19px}.cbox p{color:#5c5032;line-height:1.55}
.cacts{display:flex;gap:10px;justify-content:center;margin-top:20px;flex-wrap:wrap}.cacts .btn{min-width:112px}
.btn.dg{background:linear-gradient(180deg,#ff8fa0,#ff6b81);color:#fff;box-shadow:0 3px 0 #d94a60,0 6px 12px #ff6b8144}.btn.dg:active{box-shadow:0 1px 0 #d94a60}
@keyframes cfin{from{opacity:0}to{opacity:1}}
.fl-stage{display:flex;align-items:center;justify-content:center;gap:12px}.fl-stage .fl-wrap{flex:1;min-width:0}
.fl-nav{flex:none;width:54px;height:54px;border-radius:50%;font-size:36px;line-height:1;padding-bottom:5px;display:grid;place-items:center;color:var(--ink);background:linear-gradient(180deg,#ffd964,#ffc22e);box-shadow:0 3px 0 #e8a91a,0 6px 12px #ffc93c44;transition:transform .12s,filter .12s}
.fl-nav:hover:not(:disabled){filter:brightness(1.04);transform:translateY(-1px)}.fl-nav:active:not(:disabled){transform:translateY(2px)}.fl-nav:disabled{opacity:.35;cursor:not-allowed;box-shadow:none}
.fl{cursor:pointer;width:100%;max-width:460px}
#m-study.zoom{position:fixed;inset:0;z-index:90;background:radial-gradient(circle at 100% 0,#ffd9e855,transparent 40%),var(--bg);display:flex;flex-direction:column;justify-content:center;padding:64px 3vw 20px;overflow:auto}
#m-study.zoom .fl{max-width:1000px;min-height:min(56vh,520px)}
#m-study.zoom .fl-w{font-size:clamp(44px,8vw,88px)}#m-study.zoom .fl-m{font-size:clamp(34px,6vw,64px)}#m-study.zoom .fl-x,#m-study.zoom .fl-p{font-size:clamp(18px,2.6vw,30px)}#m-study.zoom .fl-h{font-size:14px}#m-study.zoom .fl img{max-height:220px}
.fl-top{position:absolute;top:14px;left:3vw;right:3vw;display:flex;justify-content:space-between;align-items:center}
.spk pre.pr{white-space:pre-wrap;background:var(--g2);padding:12px;border-radius:14px;margin-top:8px;font:inherit;font-size:13px;line-height:1.55;overflow-wrap:anywhere}
@media(max-width:520px){.fl-nav{width:40px;height:40px;font-size:26px}.fl-stage{gap:6px}}
@media(prefers-reduced-motion:reduce){.cfm{animation:none}}

/* ===== Lớp học · báo cáo · hồ sơ học viên ===== */
.avs{width:36px;height:36px;border-radius:50%;flex:none;object-fit:cover;display:inline-grid;place-items:center;background:linear-gradient(135deg,#fff0a8,#ffc93c);color:var(--ink);font-weight:700;font-size:15px}
.avs.lg{width:84px;height:84px;font-size:34px}
.who{display:flex;align-items:center;gap:10px;text-align:left}.who>div{display:flex;flex-direction:column;min-width:0}.who b{display:block}.who small{color:var(--mu);font-size:12px;font-weight:500;overflow-wrap:anywhere}
button.lnk .who b{color:#7a4f00}button.lnk:hover .who b{text-decoration:underline}
tr.clk{cursor:pointer}tr.clk:hover td{background:#fff3c4}
.pnav{display:flex;align-items:center;gap:10px}.pnav b{min-width:140px;text-align:center}
.bar.rg{background:#fffdf3;border:1px solid var(--bd);border-radius:16px;padding:8px 12px}.bar.rg label{display:flex;gap:6px;align-items:center;font-weight:600;font-size:13px}.bar.rg input.f{width:auto;padding:5px 10px}
.up{color:#0b9a68;font-size:12px;font-weight:700}.dn{color:var(--rd);font-size:12px;font-weight:700}.dl0{color:var(--mu);font-size:12px}
.stat .up,.stat .dn,.stat .dl0{display:block;margin-top:4px}
.dist{display:flex;flex-direction:column;gap:8px}.dbar{display:grid;grid-template-columns:150px 1fr 40px;gap:10px;align-items:center}.dbar .dl{font-weight:600;font-size:13px}.dbar .dt{height:16px;background:#f7f0d8;border-radius:999px;overflow:hidden}.dbar .dt div{height:100%;border-radius:999px;transition:width .3s}.dbar b{text-align:right}
@media(max-width:520px){.dbar{grid-template-columns:110px 1fr 30px}}
.fold button.fn{flex:1;text-align:left;padding:9px 10px;border-radius:12px;font-weight:600}
.fold .fr{display:flex;align-items:center;gap:4px;border-radius:12px}.fold .fr.on,.fold .fr:hover{background:var(--g2)}.fold .fr .btn.s{padding:4px 8px}
.fd{background:#fff;border:1px solid var(--bd);border-radius:var(--r);padding:6px 14px 10px;margin-bottom:10px}.fd summary{cursor:pointer;padding:10px 0;font-size:15px}.fd .row{margin-bottom:8px}
.pf-head{display:flex;gap:16px;align-items:center;margin-bottom:14px}
.pf-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.cbox p{max-height:50vh;overflow:auto;text-align:left}
#spg{z-index:44}

/* ---- bấm vào con số để xem danh sách ---- */
.kpi-click{cursor:pointer;transition:transform .12s,box-shadow .12s,border-color .12s}.kpi-click:hover,.kpi-click:focus-visible{transform:translateY(-2px);border-color:var(--g);box-shadow:0 8px 20px #f0d27a55;outline:none}
.kpi-hint{display:block;margin-top:6px;font-size:12px;color:var(--gd);font-weight:700}
.dnum{font-size:inherit;text-decoration:underline;text-underline-offset:3px}
.dpill{cursor:pointer;border:0;font:inherit;font-weight:700}.dpill:hover{filter:brightness(.93);text-decoration:underline}
.unit{display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--mu)}.unit select{font-weight:700}
.dls{display:inline-flex;gap:6px}
#mdlg{z-index:120}
/* ---- trang chủ: thêm mục & bảng quản trị ---- */
.row .btn[disabled]{opacity:.35}

/* ---- nhiệm vụ học viên: dòng lớn, hạn màu đỏ, phân loại ---- */
.row.task{padding:20px 22px;gap:18px;font-size:16px;margin-bottom:12px}.row.task .th{width:64px;height:64px;font-size:32px;border-radius:18px;flex:none}
.row.task .in{display:flex;flex-direction:column;gap:5px}.row.task .in b{font-size:19px}.row.task small{font-size:14px;color:var(--mu)}
.row.task .due{color:#d92d20;font-weight:700}.row.task .due.late{background:#fdeaea;border-radius:8px;padding:3px 8px;width:fit-content}.okc{color:var(--gd)}
.cat-pill{display:inline-block;width:fit-content;border-radius:999px;padding:3px 12px;font-size:12.5px;font-weight:700;color:#3b2a00}
.btn.big{padding:12px 26px;font-size:16px}

/* ---- luyện nói: nghe – nhắc lại – chấm điểm ---- */
.rp-s{font-size:24px;font-weight:800;line-height:1.4;margin:6px 0 14px;color:#3b2a00}
.rp-warn{background:#fff3cd;color:#7a4f00;border-radius:10px;padding:8px 12px;margin:8px 0}
.rp-res{display:flex;gap:18px;align-items:flex-start;background:#fffaf0;border:1px solid var(--bd);border-radius:16px;padding:14px 18px;margin-top:10px}
.rp-score{font-size:46px;font-weight:800;line-height:1}.rp-score small{font-size:16px;color:var(--mu);font-weight:600}
.wd{display:inline-block;padding:2px 9px;margin:2px 1px;border-radius:8px;font-weight:600}.wd.ok{background:#d9f7e4;color:#087443}.wd.miss{background:#fde2e2;color:#b42318}.wd.extra{background:#eee;color:#666}
.rp-row{display:flex;justify-content:space-between;gap:12px;padding:6px 0;border-bottom:1px solid var(--bd)}
.btn.rec{background:#d92d20;color:#fff;animation:rppulse 1.2s infinite}@keyframes rppulse{50%{opacity:.7}}
@media(max-width:600px){.rp-res{flex-direction:column}}
/* ảnh trong câu hỏi, kéo thả câu */
.q-img{display:block;max-width:100%;max-height:340px;margin:8px 0 12px;border-radius:10px;border:1px solid var(--bd,#e4e7ec)}
.ed-q[draggable=true]{cursor:grab}.ed-q.dragging{opacity:.45}.ed-grip{color:#98a2b3;letter-spacing:-2px;font-weight:700;margin-right:2px;user-select:none}
.ed-q.drag-up{box-shadow:0 -3px 0 #2563eb}.ed-q.drag-down{box-shadow:0 3px 0 #2563eb}
.ed-sec.drag-over,.ed-part.drag-over{outline:2px dashed #2563eb;outline-offset:2px;background:rgba(37,99,235,.05)}
/* luyện nói: nút lớn, trải rộng */
.rp-ctl{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:10px 0}
.rp-big{min-height:52px;font-size:16px;justify-content:center}
.rp-nav{display:flex;gap:10px;margin:0 0 12px}.rp-arrow{flex:1;min-height:56px;font-size:18px;font-weight:700;justify-content:center}
.lec-done{color:#087443;font-weight:700;margin:6px 0}.lec-todo{margin:6px 0}
/* ghi chú dạng thẻ */
.notes{display:grid;gap:12px}.note{border:1px solid var(--bd,#e4e7ec);border-left:4px solid #f5a000;border-radius:12px;padding:12px 14px;background:#fff}
.note.focus{box-shadow:0 0 0 3px rgba(245,160,0,.45);animation:ntp 1.2s ease 2}@keyframes ntp{50%{background:#fff7e0}}
.note-h{display:flex;gap:10px;align-items:center;margin-bottom:8px}.note-b{line-height:1.6}
.nt-to{max-height:230px;overflow:auto;border:1px solid var(--bd,#e4e7ec);border-radius:10px;padding:8px 10px}.nt-to details{margin:6px 0}.nt-to summary{cursor:pointer;padding:4px 0}
.nt-r{display:flex;align-items:center;gap:8px;padding:3px 4px;cursor:pointer}
.pv-cats{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:0 0 12px}.chipb{display:inline-flex;align-items:center;gap:4px;border:1px solid var(--bd,#e4e7ec);border-radius:999px;padding:6px 12px;background:#fff;cursor:pointer;font:inherit}.chipb.on{background:#fff3c4;border-color:#f5a000;font-weight:700}.chipb .lnk{padding:0}

/* ---- xem nội dung toàn màn hình (thay cho cửa sổ nhỏ) ---- */
.modal.full{padding:0;place-items:stretch;background:var(--bg)}
.modal.full>.box{width:100%;max-width:none;height:100%;max-height:100vh;border-radius:0;box-shadow:none;background:var(--bg);padding:14px clamp(16px,4vw,56px) 48px}
.modal.full>.box>*{max-width:1100px;margin-left:auto;margin-right:auto}
.box h3.fh{justify-content:flex-start;align-items:center;gap:14px;font-size:21px;position:sticky;top:-14px;z-index:3;background:var(--bg);padding:12px 0;margin-bottom:10px;border-bottom:1px solid var(--bd)}
.modal.full .rp-s{font-size:clamp(26px,4vw,44px)}
.modal.full .talk{max-height:none}
/* ---- luyện nói: kết quả đã lưu ---- */
.rp-done{background:#d9f7e4;color:#087443;border-radius:14px;padding:12px 16px;margin-bottom:12px;font-size:15px}
.rp-prog{background:#fff3cd;color:#7a4f00;border-radius:14px;padding:10px 14px;margin-bottom:12px}

/* ===== Trò chơi từ vựng (Games.js) – phong cách “Star Adventure” cho bé ===== */
.gm{--wd:#5b3a17;--wd2:#a05a22;position:fixed;inset:0;z-index:80;display:flex;flex-direction:column;font-family:'Quicksand','Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;color:#3a2a14;overflow:hidden;outline:none;
 background:radial-gradient(circle at 12% 12%,#fff 0 40px,transparent 41px),radial-gradient(circle at 18% 10%,#fff 0 30px,transparent 31px),radial-gradient(circle at 82% 16%,#fff 0 36px,transparent 37px),radial-gradient(circle at 88% 14%,#fff 0 26px,transparent 27px),linear-gradient(#b9e4ff 0,#e3f6ff 42%,#cdeeb3 42%,#a9dd85 100%)}
.gm *{box-sizing:border-box}
.gm-top{display:flex;align-items:center;gap:10px;padding:8px 14px;flex-wrap:wrap;background:#ffffffd9;border-bottom:3px solid var(--wd)}
.gm-ttl{font-size:1.15rem;margin-right:4px;max-width:30vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gm-tabs{display:flex;gap:6px;flex:1;min-width:0;overflow-x:auto;padding:3px 3px 6px;scrollbar-width:thin}
.gm-tab{white-space:nowrap;flex:none;padding:6px 12px;min-height:40px;font-size:.95rem}
.gm-ctl{display:flex;gap:8px;align-items:center;margin-left:auto}
.gm-ctl select{font:inherit;font-weight:700;border:2px solid var(--wd);border-radius:999px;padding:6px 10px;background:#fff;min-height:42px}
.gm-b{font:inherit;font-weight:700;border:2px solid var(--wd);background:#fff;color:#3a2a14;border-radius:999px;padding:8px 18px;cursor:pointer;min-height:44px;line-height:1.2;box-shadow:0 3px 0 var(--wd);transition:transform .08s,box-shadow .08s}
.gm-b:hover:not(:disabled){background:#fff3cf}
.gm-b:active:not(:disabled){transform:translateY(3px);box-shadow:0 0 0 var(--wd)}
.gm-b.pri{background:#2f9e44;border-color:#1f6f2f;color:#fff;box-shadow:0 3px 0 #1f6f2f}
.gm-b.pri:hover:not(:disabled){background:#27863a}
.gm-b.ok{background:#e6f7ea}.gm-b.on{background:#ffe08a}
.gm-b.rec{background:#e03131;border-color:#a61e1e;color:#fff;box-shadow:0 3px 0 #a61e1e}
.gm-b.big{font-size:1.35rem;padding:10px 28px}
.gm-b:disabled{opacity:.4;cursor:default;box-shadow:none}
.gm-guide{margin:0;padding:8px 18px 2px;text-align:center;color:#5a4426;font-weight:700;min-height:1.4em;font-size:1.02rem}
.gm-main{flex:1;min-height:0;overflow:auto;display:flex;flex-direction:column;align-items:center;padding:6px 14px 10px}
#gm-stage{width:100%;max-width:1100px;margin:auto;display:flex;flex-direction:column;align-items:center}
.gm-fb{min-height:2.2em;font-size:1.3rem;font-weight:800;text-align:center;padding:6px 0}
.gm-fb.ok{color:#1a7f37;animation:gm-pop .35s}.gm-fb.no{color:#c0392b}
.gm-empty{padding:30px;text-align:center;font-size:1.2rem;max-width:560px;color:#5a4426;line-height:1.5;background:#fff;border-radius:24px;margin:10px}
.gm-hint{color:#6d5a3a;font-size:.9rem;font-weight:600}
.gm-nav{display:flex;gap:10px;align-items:center;flex-wrap:wrap;justify-content:center;margin-top:10px}
.gm-learn,.gm-reply,.gm-count,.gm-build,.gm-write,.gm-match,.gm-arr{display:flex;flex-direction:column;align-items:center;gap:12px;width:100%}
/* chữ trong ô luôn nằm gọn trong ô: JS thu nhỏ .ft cho vừa [data-box] */
.ft{display:block;width:100%;text-align:center;line-height:1.15;overflow-wrap:anywhere;max-width:100%}
[data-box]{overflow:hidden;min-width:0;min-height:0}
.gm-card{border:3px solid #fff;background:#fff;box-shadow:0 6px 0 #0000001a,0 12px 30px #0000002b;border-radius:30px;padding:18px 28px;width:min(560px,94vw);cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:4px;font:inherit;color:inherit;overflow:hidden}
.gm-card.static{cursor:default}
.gm-im{border-radius:18px;object-fit:cover;max-width:100%}
.gm-im.big{width:clamp(120px,26vh,260px);height:clamp(120px,26vh,260px)}
.gm-im.sm{width:56px;height:56px}.gm-im.sm2{width:clamp(70px,12vh,110px);height:clamp(70px,12vh,110px)}
.gm-im.opt{width:100%;height:100%;border-radius:12px;object-fit:contain}
.gm-emo.big{font-size:clamp(70px,16vh,150px);line-height:1.1}
.gm-emo.sm{font-size:40px}.gm-emo.sm2{font-size:clamp(44px,8vh,76px);line-height:1}
.gm-emo.opt{font-size:clamp(48px,10vh,90px);line-height:1}
.gm-hz{font-size:clamp(54px,13vh,130px);font-weight:700;color:#1b4f99;line-height:1.1;max-width:100%;overflow:hidden;white-space:nowrap}
.gm-hz .ft{display:inline-block;width:auto;white-space:nowrap}
.gm-hz.hid{visibility:hidden}
.gm-py{font-size:1.5rem;color:#8a5a00;font-weight:700}
.gm-mean{font-size:1.6rem;color:#4b3b24;font-weight:700;text-align:center;overflow-wrap:anywhere;max-width:100%}
.gm-ex{font-size:1.25rem;color:#1b4f99;font-weight:700;text-align:center;overflow-wrap:anywhere;margin-top:4px}
.gm-q{font-size:1.8rem;font-weight:800;text-align:center;background:#fff;border-radius:20px;padding:8px 22px}
.gm-q small{display:block;color:#8e8671;font-size:1rem}
.gm-q-ph{font-size:4rem;line-height:1.1}
.gm-qbox{display:flex;flex-direction:column;align-items:center;gap:4px;background:#fff;border-radius:24px;padding:10px 28px}
.gm-flip{display:grid;gap:12px;width:100%}
.gm-flip.c3{grid-template-columns:repeat(3,1fr)}.gm-flip.c4{grid-template-columns:repeat(4,1fr)}
.gm-tile{display:flex;align-items:center;justify-content:center;border:3px solid var(--wd);border-radius:18px;background:#fff;height:clamp(96px,18vh,160px);font:inherit;cursor:pointer;padding:0;box-shadow:0 4px 0 var(--wd)}
.gm-tile .bk{font-size:2.4rem;color:#ffc93c}
.gm-tile .fr{display:none;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:6px;text-align:center;width:100%;height:100%;min-height:0;overflow:hidden}
.gm-tile.up{background:#fff8e1}.gm-tile.up .fr{display:flex}.gm-tile.up .bk{display:none}
.gm-tile.ok{background:#e6f7ea;border-color:#2f9e44}
.gm-tile .hz{font-size:clamp(30px,6.5vh,60px);font-weight:700;color:#1b4f99}
.gm-tile small{color:#8a5a00;font-weight:700}
.gm-tile .mn{font-weight:700;font-size:1.1rem}
.gm-slots,.gm-chars{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.gm-slot,.gm-ch{width:clamp(56px,11vh,96px);height:clamp(56px,11vh,96px);border-radius:18px;font:inherit;font-size:clamp(32px,7vh,60px);font-weight:700;color:#1b4f99;cursor:pointer;background:#fff;padding:0;display:flex;align-items:center;justify-content:center}
.gm-slot .ft,.gm-ch .ft,.gm-chip .ft,.gm-mw .ft{width:auto;white-space:nowrap}
.gm-slot{border:3px dashed #8c7a52}.gm-slot.on{border-style:solid;border-color:#1b4f99;background:#eef4ff}.gm-slot.ok{background:#d3f9d8;border-color:#2f9e44;color:#1a7f37}
.gm-ch{border:3px solid var(--wd);background:#fff3cf;box-shadow:0 4px 0 var(--wd)}.gm-ch:disabled{opacity:.25;box-shadow:none}
.gm-opts{display:grid;gap:12px;width:100%;max-width:900px}
.gm-opts.n{grid-template-columns:repeat(4,1fr)}.gm-opts.v{grid-template-columns:1fr}
.gm-opts.h{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.gm-opts.pic{grid-template-columns:repeat(2,1fr)}.gm-opts.pic.n3{grid-template-columns:repeat(3,1fr)}
.gm-opt{position:relative;font:inherit;font-weight:700;border:3px solid var(--wd);border-radius:22px;background:#fff;padding:10px;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;box-shadow:0 5px 0 var(--wd);transition:transform .08s,box-shadow .08s}
.gm-opt.n,.gm-opts.n .gm-opt{height:clamp(84px,15vh,120px)}
.gm-opt b{font-size:2.4rem;line-height:1}.gm-opt small{font-size:.95rem;color:#8e8671}
.gm-opt:hover:not(:disabled){background:#fff3cf}
.gm-opt:active:not(:disabled){transform:translateY(4px);box-shadow:0 1px 0 var(--wd)}
.gm-opt.ok,.gm-opt.ok:hover{background:#d3f9d8;border-color:#2f9e44;box-shadow:0 5px 0 #2f9e44}
.gm-opt.no{background:#ffe3e3;border-color:#e03131;opacity:.75;animation:gm-shake .3s;box-shadow:none}
.gm-opt.hz{font-size:clamp(40px,9vh,86px);color:#1b4f99;line-height:1.1;height:clamp(90px,17vh,150px)}
.gm-opt.pic{height:clamp(120px,26vh,230px);padding:8px}
.gm-opt .lt{position:absolute;left:8px;top:8px;z-index:2;font-style:normal;width:32px;height:32px;border-radius:50%;background:#1c7ed6;color:#fff;display:grid;place-items:center;font-size:1rem;font-weight:800;border:2px solid #fff}
.gm-opt .mn{font-size:clamp(1.3rem,3.4vh,2rem);color:#3a2a14}
.gm-opt.wide{font-size:clamp(1.3rem,3.4vh,2rem);justify-content:center;padding:8px 22px;height:clamp(60px,10vh,92px)}
.gm-opt.wide .ft{text-align:left}
.gm-mrow{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:12px;width:100%;max-width:900px}
.gm-mi{height:clamp(96px,19vh,160px);border:3px solid var(--wd);border-radius:20px;background:#fff;padding:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 0 var(--wd)}
.gm-mw{height:clamp(52px,9vh,72px);border:3px solid var(--wd);border-radius:16px;background:#fff3cf;font:inherit;font-size:clamp(1.2rem,3.2vh,1.8rem);font-weight:800;color:#3a2a14;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0 10px;box-shadow:0 4px 0 var(--wd)}
.gm-mi.sel,.gm-mw.sel{outline:4px solid #1c7ed6;outline-offset:2px;transform:translateY(-3px)}
.gm-mi.ok,.gm-mw.ok{background:#d3f9d8;border-color:#2f9e44;box-shadow:0 4px 0 #2f9e44;opacity:.95}
.gm-arrtop{display:flex;gap:14px;align-items:center}
.gm-lane{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;align-items:flex-end;min-height:clamp(70px,11vh,92px);padding:12px;border-radius:22px;background:#fff;border:3px dashed #8c7a52;width:100%;max-width:900px}
.gm-lane.ok{border-style:solid;border-color:#2f9e44;background:#ebfbee}
.gm-hole{width:clamp(54px,9vw,90px);height:clamp(46px,7vh,60px);border-bottom:4px solid #b9a97c}
.gm-bank{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;max-width:900px}
.gm-chip{height:clamp(46px,8vh,62px);min-width:54px;max-width:min(100%,380px);padding:0 16px;border:3px solid var(--wd);border-radius:14px;background:#fff3cf;font:inherit;font-size:clamp(1.2rem,3vh,1.8rem);font-weight:800;color:#1b4f99;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;box-shadow:0 4px 0 var(--wd)}
.gm-chip:disabled{opacity:.25;box-shadow:none}.gm-chip.on{background:#fff;border-color:#1b4f99;box-shadow:0 4px 0 #1b4f99}
.gm-wr2{display:grid;grid-template-columns:1fr 1fr;gap:18px;width:100%;max-width:1000px;align-items:start}
.gm-wr2:not(:has(.gm-color)){grid-template-columns:1fr;max-width:560px}
.gm-wl,.gm-color{background:#fff;border-radius:26px;padding:16px;display:flex;flex-direction:column;align-items:center;gap:12px;box-shadow:0 6px 0 #0000001a,0 12px 30px #0000002b}
.gm-wtop{display:flex;align-items:center;gap:12px}
.gm-inputs{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;max-width:100%}
.gm-inputs .gap{width:22px}
.gm-lt{width:clamp(46px,9vh,70px);height:clamp(58px,11vh,86px);text-align:center;font:inherit;font-size:clamp(30px,6.5vh,54px);font-weight:800;border:3px solid var(--wd);border-bottom-width:6px;border-radius:14px;color:#1b4f99;background:#fffdf0;padding:0;min-width:0}
.gm-lt::placeholder{color:#c9d3df;opacity:1}
.gm-lt:focus{outline:3px solid #1c7ed6;border-color:#1c7ed6}
.gm-lt.ok{background:#d3f9d8;border-color:#2f9e44}.gm-lt.no{background:#ffe3e3;border-color:#e03131;animation:gm-shake .3s}
.gm-cvw{position:relative;width:clamp(200px,36vh,330px);aspect-ratio:1;background:#fff;border:3px solid var(--wd);border-radius:20px;overflow:hidden}
.gm-cvbg{position:absolute;inset:8%;display:grid;place-items:center;filter:grayscale(1) contrast(.85) brightness(1.3);opacity:.6;pointer-events:none}
.gm-cvbg .gm-im,.gm-cvbg .gm-emo{width:100%;height:100%;object-fit:contain;font-size:clamp(90px,20vh,180px);display:grid;place-items:center}
.gm-cv2{position:absolute;inset:0;width:100%;height:100%;mix-blend-mode:multiply;touch-action:none;cursor:crosshair}
.gm-pal{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:center}
.gm-sw{width:38px;height:38px;border-radius:50%;border:3px solid #fff;box-shadow:0 0 0 2px var(--wd);cursor:pointer;padding:0}
.gm-sw.on{transform:scale(1.2);box-shadow:0 0 0 3px #1c7ed6}
.gm-objs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;max-width:720px;background:#fff;border-radius:22px;padding:12px}
.gm-obj{font-size:clamp(40px,9vh,80px);line-height:1.1}
img.gm-obj{width:clamp(48px,10vh,84px);height:clamp(48px,10vh,84px);object-fit:cover;border-radius:10px}
.gm-hands{display:flex;gap:14px;justify-content:center;background:#fff;border-radius:22px;padding:10px 24px}
.gm-hand{height:clamp(120px,24vh,220px)}.gm-hand .fg{fill:#ffd8a8;stroke:#c98a4b;stroke-width:2}
.gm-hw{background:#fff;border:3px solid var(--wd);border-radius:18px;touch-action:none;background-image:linear-gradient(#eadfc5 1px,transparent 1px),linear-gradient(90deg,#eadfc5 1px,transparent 1px);background-size:50% 50%}
.gm-hw svg,.gm-hw canvas{display:block}
.gm-say{display:flex;align-items:flex-start;gap:12px;margin-bottom:10px}
.gm-say .av{font-size:3.4rem}
.gm-bub{background:#fff;border:3px solid var(--wd);border-radius:22px;padding:12px 20px;font-size:clamp(1.5rem,4vh,2.4rem);font-weight:800;display:flex;gap:12px;align-items:center;overflow-wrap:anywhere}
.gm-res{padding:10px 18px;border-radius:16px;font-weight:700;font-size:1.2rem;text-align:center}
.gm-res.ok{background:#d3f9d8}.gm-res.no{background:#ffe3e3}.gm-res small{display:block;font-weight:600;color:#6b5d3f}
/* hành trình 7 chặng */
.gm-advhead{display:flex;align-items:center;gap:12px;padding:8px 14px 0;flex-wrap:wrap;justify-content:center}
.gm-advhead[hidden],.gm-path[hidden]{display:none}
.gm-banner{display:flex;align-items:center;gap:10px;background:linear-gradient(#c97a3a,#a05a22);border:3px solid var(--wd);border-radius:999px;padding:4px 20px 4px 6px;color:#fff;font-size:1.2rem;box-shadow:0 3px 0 var(--wd)}
.gm-banner .num{min-width:36px;height:36px;border-radius:50%;background:#ffc93c;color:var(--wd);display:grid;place-items:center;font-weight:800;border:3px solid #fff}
.gm-banner .vi{font-weight:600}
.gm-starbadge{background:#fff;border:3px solid var(--wd);border-radius:999px;padding:4px 14px;font-weight:800;color:#b36b00;box-shadow:0 3px 0 var(--wd)}
.gm-path{display:flex;flex-direction:column;gap:6px;align-items:center;padding:8px 14px;background:#ffffffe6;border-top:3px solid var(--wd)}
.gm-steps{display:flex;align-items:center;gap:4px;overflow-x:auto;max-width:100%;padding:2px 4px}
.gm-st{display:flex;flex-direction:column;align-items:center;min-width:54px;opacity:.55;flex:none}
.gm-st span{width:40px;height:40px;border-radius:50%;background:#e9ecef;display:grid;place-items:center;font-size:1.25rem;border:3px solid #adb5bd}
.gm-st small{font-weight:800;font-size:.75rem}
.gm-st.done{opacity:1}.gm-st.done span{background:#ffe08a;border-color:#f08c00}
.gm-st.cur{opacity:1}.gm-st.cur span{background:#d0ebff;border-color:#1c7ed6;transform:scale(1.15)}
.gm-st.skip{opacity:.3}
.gm-steps .arr{color:#f08c00;font-style:normal;font-weight:800}
.gm-advbtns{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.gm.adv [data-g=nxt],.gm.adv [data-g=prev],.gm.adv [data-g=next]{display:none!important}
.gm-fin{text-align:center;background:#fff;border-radius:30px;padding:18px 40px;box-shadow:0 6px 0 #0000001a,0 12px 30px #0000002b}
.gm-fin .trophy{font-size:clamp(80px,18vh,170px);line-height:1.1;animation:gm-pop .6s}
.gm-fin h2{font-size:2.4rem;color:#e8590c;margin:0}
.gm-bigstar{font-size:3rem;font-weight:800;color:#f08c00}
.gm-finw{display:flex;gap:10px;align-items:center;justify-content:center;font-size:1.5rem;flex-wrap:wrap}
.gm-burst{position:absolute;left:0;right:0;bottom:22%;height:0;pointer-events:none;z-index:5}
.gm-burst span{position:absolute;bottom:0;animation:gm-rise 1.2s ease-out forwards}
@keyframes gm-rise{from{transform:translateY(0) rotate(0);opacity:1}to{transform:translateY(-280px) rotate(200deg);opacity:0}}
@keyframes gm-pop{0%{transform:scale(.6)}60%{transform:scale(1.15)}100%{transform:scale(1)}}
@keyframes gm-shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-7px)}75%{transform:translateX(7px)}}
.gm-score{display:flex;gap:12px;padding:8px 14px;border-top:3px solid var(--wd);background:#fffaf0;justify-content:center;flex-wrap:wrap}
.gm-score.two .gm-team{flex:1}
.gm-team{display:flex;align-items:center;gap:10px;border:3px solid var(--wd);border-radius:22px;padding:6px 16px;background:#fff}
.gm-team .nm{flex:1;font-weight:700;font-size:1.2rem}
.gm-team b{font-size:2rem;color:#1b4f99;min-width:2ch;text-align:center}
.gm.teams .gm-hz{font-size:clamp(70px,17vh,170px)}
@media (max-width:760px){
 .gm-top{padding:6px 8px}.gm-ttl{max-width:100%}.gm-b{padding:6px 12px;font-size:.9rem;min-height:40px}
 .gm-opts.n{grid-template-columns:repeat(2,1fr)}.gm-flip.c4{grid-template-columns:repeat(3,1fr)}
 .gm-opts.pic.n3{grid-template-columns:repeat(3,1fr)}.gm-opt.pic{height:clamp(96px,20vh,170px)}
 .gm-team{padding:4px 10px}.gm-team .nm{font-size:1rem}.gm-team b{font-size:1.6rem}
 .gm-card{padding:14px 16px}.gm-wr2{grid-template-columns:1fr}
}
/* ===== Link bài giảng nhúng (OneDrive / SharePoint / Google Drive…) xem ngay trên web ===== */
.emb{margin:10px 0}
.emb-bar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:6px}
.m-emb{width:100%;height:min(78vh,720px);min-height:340px;border:2px solid var(--bd);border-radius:12px;background:#fff;display:block}
.emb:fullscreen .m-emb,.m-emb:fullscreen{height:100vh;border:0;border-radius:0}
.gs-list{max-height:46vh;overflow:auto;display:flex;flex-direction:column;gap:8px;margin:8px 0}
.gs-row{border:1px solid var(--bd);border-radius:12px;padding:8px 10px;display:grid;gap:4px}
.gs-chk{display:flex;gap:8px;align-items:center}

.gm-fcard{width:min(620px,94vw);height:clamp(240px,44vh,400px);border:3px solid #fff;background:#fff;box-shadow:0 6px 0 #0000001a,0 12px 30px #0000002b;border-radius:30px;padding:16px 24px;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;font:inherit;color:inherit;overflow:hidden}
.gm-fcard.back{background:#fff8e1}
.gm-mean.big{font-size:clamp(1.8rem,5vh,3rem);color:#3a2a14}
.gm-tab.done{background:#d3f9d8;border-color:#2f9e44;box-shadow:0 3px 0 #2f9e44}
.gm-tab.pri.done{background:#2f9e44;color:#fff}
.gm-prog{text-align:center;font-weight:800;color:#1b4f99;min-height:1.2em;font-size:1rem}