:root{
  --ink:#1d2330;--ink2:#5b6475;--ink3:#8b93a3;--line:#e5e8ee;--ok:#2fa36b;--no:#e0524a;--part:#e8a33d;
  --p:#2b3242;--on-p:#fff;--p-soft:#f4f5f8;--p-tint:#eceef3;--p-line:#e3e6ec;--p-deep:#2b3242;--p-ink:#1d2330;--p-mid:#aab1bf;--p-acc:#c9ced8;--p-glow:#2b324230;
  --ui:'Lexend',system-ui,-apple-system,'Segoe UI',sans-serif;
}
*{box-sizing:border-box;margin:0}
html,body{height:100%}
body{font-family:var(--ui);color:var(--ink);background:#f4f5f8;-webkit-font-smoothing:antialiased}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
.ic{width:20px;height:20px;flex:none}
[hidden]{display:none!important}
.shake{animation:shake .4s}
@keyframes shake{20%,60%{transform:translateX(-7px)}40%,80%{transform:translateX(7px)}}

/* ================= STUDENT ================= */
.sapp{position:fixed;inset:0;overflow:auto;background:var(--p-soft);color:var(--p-ink);transition:background .5s}
.s-bg{position:fixed;inset:0;pointer-events:none;overflow:hidden}
.s-bg i{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55;animation:float 18s ease-in-out infinite alternate}
.s-bg i:nth-child(1){width:46vmax;height:46vmax;left:-14vmax;top:-16vmax;background:var(--p-tint)}
.s-bg i:nth-child(2){width:34vmax;height:34vmax;right:-10vmax;bottom:-12vmax;background:var(--p-acc);opacity:.28;animation-duration:22s}
.s-bg i:nth-child(3){width:20vmax;height:20vmax;right:18vw;top:8vh;background:var(--p-mid);opacity:.18;animation-duration:26s}
@keyframes float{to{transform:translate(4vmax,3vmax) scale(1.08)}}
.s-stage{position:relative;min-height:100%;display:grid;place-items:center;padding:40px 16px}
.s-screen{grid-area:1/1;width:min(540px,100%);animation:sIn .5s cubic-bezier(.2,.8,.2,1) both}
.s-screen.out{animation:sOut .3s ease both;pointer-events:none}
.s-screen.quiz{width:min(760px,100%);align-self:start}
@keyframes sIn{from{opacity:0;transform:translateY(18px) scale(.985)}}
@keyframes sOut{to{opacity:0;transform:translateY(-12px) scale(.985)}}
.s-card{background:#fff;border-radius:30px;padding:38px 34px 32px;text-align:center;box-shadow:0 30px 70px -30px var(--p-glow),0 0 0 1px var(--p-line)}
.s-logo{display:block;height:58px;margin:0 auto 18px}
.bl{display:inline-block;width:44px;border-bottom:2px solid currentColor;opacity:.5;margin:0 3px;vertical-align:baseline}
.s-chip{display:inline-flex;align-items:center;gap:7px;padding:6px 13px 6px 10px;border-radius:99px;background:var(--p-tint);color:var(--p-deep);font-size:13px;font-weight:600}
.s-chip .ic{width:16px;height:16px}
.s-card h1{font-size:clamp(28px,6vw,38px);line-height:1.1;font-weight:700;letter-spacing:-.02em;margin:14px 0 6px;color:var(--p-ink)}
.s-lead{color:var(--ink2);font-size:16px;margin-bottom:22px}
.s-sub{color:var(--ink2);font-size:15px}
.s-form{display:grid;gap:12px}
.s-form input{height:56px;border-radius:16px;border:2px solid var(--p-line);padding:0 18px;font-size:17px;text-align:center;outline:0;transition:border .2s,box-shadow .2s}
.s-form input:focus{border-color:var(--p);box-shadow:0 0 0 5px var(--p-glow)}
.s-note{margin-top:14px;font-size:13px;color:var(--ink3)}
.s-btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;width:100%;height:58px;border-radius:18px;background:var(--p);color:var(--on-p);font-size:18px;font-weight:600;box-shadow:0 14px 28px -14px var(--p);transition:transform .15s,filter .2s}
.s-btn:hover{filter:brightness(1.06)}.s-btn:active{transform:scale(.98)}
.s-btn:disabled{opacity:.35;box-shadow:none;cursor:default;filter:none}
.s-go{margin-top:26px;font-size:20px;height:64px}
.s-go::after{content:'';position:absolute;inset:0;border-radius:inherit;box-shadow:0 0 0 0 var(--p);animation:ring 1.8s ease-out infinite}
@keyframes ring{to{box-shadow:0 0 0 16px transparent}}
.s-who{display:flex;justify-content:center;align-items:center;gap:8px;font-size:13px;color:var(--ink2);margin-bottom:14px}
.s-link{color:var(--p-deep);font-weight:600;text-decoration:underline;text-underline-offset:3px;font-size:13px}
.s-emblem{position:relative;width:104px;height:104px;margin:0 auto 18px;border-radius:50%;background:var(--p);color:var(--on-p);display:grid;place-items:center;box-shadow:0 18px 36px -14px var(--p);animation:bob 4s ease-in-out infinite}
.s-emblem>.ic{width:50px;height:50px;stroke-width:1.6}
.s-emblem i{position:absolute;inset:-14px;border-radius:50%;animation:spin 9s linear infinite}
.s-emblem i::before{content:'';position:absolute;top:0;left:50%;width:12px;height:12px;margin-left:-6px;border-radius:50%;background:var(--p-acc)}
.s-emblem i:nth-child(3){animation-duration:13s;animation-direction:reverse;inset:-24px}.s-emblem i:nth-child(3)::before{width:8px;height:8px;background:var(--p-mid)}
.s-emblem i:nth-child(4){animation-duration:7s;animation-delay:-3s}.s-emblem i:nth-child(4)::before{width:7px;height:7px;background:var(--p-tint)}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes bob{50%{transform:translateY(-6px)}}
.s-facts{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:20px}
.s-facts span{display:inline-flex;align-items:center;gap:7px;padding:8px 13px;border-radius:12px;background:var(--p-soft);border:1px solid var(--p-line);font-size:14px;font-weight:500;color:var(--p-ink)}
.s-facts .ic{width:17px;height:17px;color:var(--p)}
.s-best{display:flex;align-items:baseline;justify-content:center;gap:10px;margin-top:20px}
.s-best b{font-size:34px;color:var(--p-deep)}.s-best span{color:var(--ink2);font-size:14px}
.s-stop{margin-top:22px;padding:16px;border-radius:16px;background:var(--p-tint);color:var(--p-deep);font-weight:500}
.s-rules{margin-top:14px;font-size:13px;color:var(--ink3)}

/* countdown */
.s-screen.center{display:grid;place-items:center;min-height:60vh}
.s-count{position:relative;width:240px;height:240px;display:grid;place-items:center}
.s-count svg{position:absolute;inset:0;transform:rotate(-90deg)}
.s-count circle{fill:none;stroke:var(--p-tint);stroke-width:8}
.s-count b{font-size:128px;font-weight:700;color:var(--p);line-height:1;opacity:0}
.s-count b.pop{animation:pop .78s cubic-bezier(.2,.9,.3,1.3) both}
.s-count b.go{font-size:84px}
.s-count.last circle{stroke:var(--p);animation:burst .7s ease-out both}
@keyframes pop{0%{opacity:0;transform:scale(1.9)}30%{opacity:1;transform:scale(1)}80%{opacity:1}100%{opacity:0;transform:scale(.8)}}
@keyframes burst{to{transform:scale(1.4);opacity:0}}

/* quiz */
.q-top{display:flex;align-items:center;gap:16px}
.q-n{font-size:15px;color:var(--ink2);white-space:nowrap}.q-n b{font-size:24px;color:var(--p-ink)}
.q-dots{flex:1;display:flex;gap:5px}
.q-dots i{flex:1;height:7px;border-radius:4px;background:var(--p-line);transition:background .3s}
.q-dots i.now{background:var(--p-mid)}.q-dots i.ok{background:var(--ok)}.q-dots i.no{background:var(--no)}.q-dots i.part{background:var(--part)}
.q-snd{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:var(--ink2);background:#fff;box-shadow:0 0 0 1px var(--p-line)}
.q-time{display:flex;align-items:center;gap:12px;margin:16px 0 18px}
.q-bar{flex:1;height:12px;border-radius:12px;background:#fff;box-shadow:inset 0 0 0 1px var(--p-line);overflow:hidden}
.q-bar i{display:block;height:100%;background:var(--p);border-radius:12px;transform-origin:left;transition:background .3s}
.q-time b{min-width:34px;text-align:right;font-size:20px;font-variant-numeric:tabular-nums;color:var(--p-ink)}
.q-time.hurry .q-bar i{background:var(--no)}.q-time.hurry b{color:var(--no);animation:beat 1s infinite}
@keyframes beat{15%{transform:scale(1.25)}}
.q-wrap{display:grid}
.q-card{grid-area:1/1;background:#fff;border-radius:28px;padding:30px 30px 26px;box-shadow:0 30px 70px -32px var(--p-glow),0 0 0 1px var(--p-line);animation:qIn .45s cubic-bezier(.2,.8,.2,1) both;user-select:none;-webkit-user-select:none}
.q-card.out{animation:qOut .32s ease both}
@keyframes qIn{from{opacity:0;transform:translateX(40px)}}
@keyframes qOut{to{opacity:0;transform:translateX(-40px)}}
.q-card.timeup{animation:shake .4s}
.q-kind{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--p)}
.q-text{font-size:clamp(20px,3.6vw,26px);line-height:1.35;font-weight:600;margin:8px 0 24px;color:var(--p-ink)}
.q-text b{color:var(--p-deep);background:linear-gradient(transparent 60%,var(--p-tint) 60%)}
.gap{display:inline-block;min-width:96px;padding:0 10px;border-bottom:3px dashed var(--p);color:var(--p);text-align:center}
.gap.ok{color:var(--ok);border-color:var(--ok);border-bottom-style:solid}.gap.no{color:var(--no);border-color:var(--no);border-bottom-style:solid}
.opts{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.opt{display:flex;align-items:center;gap:13px;padding:15px 16px;border-radius:17px;border:2px solid var(--p-line);background:#fff;text-align:left;font-size:17px;font-weight:500;line-height:1.3;transition:border .15s,transform .15s,background .2s,opacity .3s}
.opt em{flex:none;width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:var(--p-tint);color:var(--p-deep);font-style:normal;font-size:14px;font-weight:700;transition:.2s}
.opt:hover{border-color:var(--p);transform:translateY(-2px)}
.opt.right{background:#e9f7ef;border-color:var(--ok)}.opt.right em{background:var(--ok);color:#fff}
.opt.wrong{background:#fdeeec;border-color:var(--no)}.opt.wrong em{background:var(--no);color:#fff}
.locked .opt{pointer-events:none}.locked .opt:not(.right):not(.wrong){opacity:.4}
.opts.chips{display:flex;flex-wrap:wrap;justify-content:center}
.opts.chips .opt{border-radius:99px;padding:12px 22px}.opts.chips em{display:none}
.tf{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.tf .opt{flex-direction:column;justify-content:center;height:136px;font-size:21px;font-weight:600}
.tf .opt .ic{width:42px;height:42px;stroke-width:2.4}.tf .t .ic{color:var(--ok)}.tf .f .ic{color:var(--no)}
.q-foot{margin-top:18px}.q-foot:empty{display:none}
.sort{display:grid;gap:10px}
.srow{display:grid;grid-template-columns:1fr minmax(0,1.3fr) 1fr;gap:8px;align-items:center}
.sit{padding:13px 12px;border-radius:14px;background:var(--p-soft);border:2px solid var(--p-line);text-align:center;font-weight:600;font-size:16px;transition:.25s}
.sb{height:48px;border-radius:14px;border:2px solid var(--p-line);background:#fff;font-size:14px;font-weight:600;color:var(--ink2);transition:.2s}
.sb:hover{border-color:var(--p)}
.srow[data-at="0"] .sb.l,.srow[data-at="1"] .sb.r{background:var(--p);border-color:var(--p);color:var(--on-p)}
.srow[data-at="0"] .sit{transform:translateX(-6px);border-color:var(--p)}.srow[data-at="1"] .sit{transform:translateX(6px);border-color:var(--p)}
.locked .sb{pointer-events:none}
.srow.ok .sit{background:#e9f7ef;border-color:var(--ok)}
.srow.no .sit{background:#fdeeec;border-color:var(--no)}
.srow.no[data-at="0"] .sb.l,.srow.no[data-at="1"] .sb.r{background:#e9f7ef;border-color:var(--ok);color:#17784a}
.match{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mc{display:flex;flex-direction:column;gap:10px}
.mi{display:flex;align-items:center;gap:10px;min-height:56px;padding:10px 14px;border-radius:15px;border:2px solid var(--p-line);background:#fff;text-align:left;font-size:15px;font-weight:500;line-height:1.25;transition:.15s}
.mi span{flex:1}.mi.R{background:var(--p-soft)}
.mi em{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-style:normal;font-size:13px;font-weight:700;border:2px dashed var(--p-line);color:transparent}
.mi:hover{border-color:var(--p-mid)}
.mi.sel{border-color:var(--p);background:var(--p-tint);transform:scale(1.02)}
.mi.on{border-color:var(--p)}.mi.on em{background:var(--p);border:0;color:var(--on-p)}
.locked .mi{pointer-events:none}
.mi.L.ok{border-color:var(--ok);background:#e9f7ef}.mi.L.ok em{background:var(--ok)}
.mi.L.no{border-color:var(--no);background:#fdeeec}.mi.L.no em{background:var(--no)}
.fix{display:flex;flex-direction:column;gap:6px}
.fix span{display:flex;gap:8px;align-items:center;font-size:14px;color:#17784a;background:#e9f7ef;padding:8px 12px;border-radius:12px}.fix .ic{width:16px;height:16px}
.order{display:flex;flex-direction:column;gap:9px}
.oi{display:flex;align-items:center;gap:14px;padding:12px 16px;border-radius:15px;border:2px solid var(--p-line);background:#fff;text-align:left;font-size:16px;font-weight:500;transition:.15s}
.oi em{flex:none;min-width:32px;height:32px;padding:0 6px;border-radius:16px;display:grid;grid-auto-flow:column;gap:6px;place-items:center;border:2px dashed var(--p-line);font-style:normal;font-weight:700;font-size:14px}
.oi:hover{border-color:var(--p-mid)}
.oi.on{border-color:var(--p)}.oi.on em{background:var(--p);color:var(--on-p);border:0}
.locked .oi{pointer-events:none}
.oi.ok{border-color:var(--ok);background:#e9f7ef}.oi.ok em{background:var(--ok)}
.oi.no{border-color:#f1b2ab;background:#fdf3f2}.oi.no em{background:var(--ok)}
.oi span{flex:1}.was{font-size:12px;font-weight:600;color:var(--no);background:#fff;padding:3px 9px;border-radius:99px;white-space:nowrap}
.hint{margin-top:12px;text-align:center;font-size:13px;color:var(--ink3)}
.q-toast{position:fixed;left:50%;bottom:28px;z-index:20;transform:translate(-50%,160%);display:flex;align-items:center;gap:9px;padding:13px 24px;border-radius:99px;font-size:18px;font-weight:600;color:#fff;transition:transform .35s cubic-bezier(.2,.9,.3,1.2);box-shadow:0 16px 30px -12px rgba(0,0,0,.35)}
.q-toast.on{transform:translate(-50%,0)}
.q-toast.ok{background:var(--ok)}.q-toast.no{background:var(--no)}.q-toast.part{background:var(--part)}
.q-toast .ic{width:22px;height:22px;stroke-width:2.6}

/* result */
.s-ring{position:relative;width:210px;height:210px;margin:22px auto 6px}
.s-ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.s-ring circle{fill:none;stroke-width:14}
.s-ring .bg{stroke:var(--p-tint)}.s-ring .fg{stroke:var(--p);stroke-linecap:round;transition:stroke-dashoffset 1.4s cubic-bezier(.3,.8,.3,1)}
.s-ring>div{position:absolute;inset:0;display:grid;place-items:center;grid-auto-flow:column;place-content:center;align-items:baseline}
.s-ring b{font-size:68px;font-weight:700;color:var(--p-ink);font-variant-numeric:tabular-nums;letter-spacing:-.03em}.s-ring span{font-size:26px;font-weight:600;color:var(--ink3)}
.s-result h1{margin-top:6px}
.s-newbest{display:inline-flex;align-items:center;gap:6px;margin-top:6px;padding:6px 14px;border-radius:99px;background:#fff3d6;color:#8a5d00;font-weight:600;font-size:14px;animation:pop2 .5s 1.5s both}
.s-newbest .ic{width:17px;height:17px}
@keyframes pop2{from{opacity:0;transform:scale(.6)}}
.s-result .s-btn{margin-top:24px}
.s-perfect{margin-top:22px;color:var(--ok);font-weight:600}
.s-review{margin-top:22px;text-align:left;border-top:1px solid var(--p-line);padding-top:14px}
.s-review summary{display:flex;align-items:center;gap:8px;list-style:none;cursor:pointer;font-weight:600;color:var(--p-ink);padding:6px 2px}
.s-review summary::-webkit-details-marker{display:none}
.s-review summary span{padding:1px 9px;border-radius:99px;background:#fdeeec;color:var(--no);font-size:13px}
.s-review summary .ic{margin-left:auto;transition:transform .2s;color:var(--ink3)}
.s-review[open] summary .ic{transform:rotate(180deg)}
.rv{padding:12px 0;border-bottom:1px solid var(--p-line)}.rv:last-child{border:0}
.rv p{font-size:15px;font-weight:500;margin-bottom:6px}
.rv-y,.rv-r{display:flex;align-items:center;gap:7px;font-size:14px;margin-top:3px}
.rv-y{color:var(--no)}.rv-r{color:#17784a}.rv .ic{width:15px;height:15px;stroke-width:2.6}
.confetti{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:30}

@media(max-width:600px){
  .s-card{padding:30px 20px 24px;border-radius:24px}
  .q-card{padding:22px 16px 18px;border-radius:22px}
  .opts{grid-template-columns:1fr}
  .tf .opt{height:110px}
  .srow{grid-template-columns:1fr;gap:6px}.srow .sit{order:-1}
  .srow{grid-template-areas:"i i" "l r";grid-template-columns:1fr 1fr}.sit{grid-area:i}.sb.l{grid-area:l}.sb.r{grid-area:r}
  .srow[data-at] .sit{transform:none}
  .mi{font-size:14px;padding:9px 10px;min-height:50px}
}

/* ================= TEACHER ================= */
.tapp{min-height:100vh;background:var(--p-soft);transition:background .4s}
.t-bar{position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;height:66px;padding:0 28px;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.t-brand{display:flex;align-items:center;gap:10px;font-size:17px;color:var(--ink)}
.t-brand img{height:30px}.t-brand img+img{height:32px}
.t-brand span{margin-left:6px;padding-left:14px;border-left:1px solid var(--line)}.t-brand b{font-weight:700}
.t-acts{display:flex;gap:8px}
.t-main{max-width:1120px;margin:0 auto;padding:34px 28px 90px}
.t-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:13px;background:var(--p);color:var(--on-p);font-weight:600;font-size:15px;box-shadow:0 10px 20px -12px var(--p);transition:filter .2s,transform .15s}
.t-btn:hover{filter:brightness(1.07)}.t-btn:active{transform:scale(.98)}
.t-btn.sm{height:40px;padding:0 15px;font-size:14px}.t-btn .ic{width:18px;height:18px}
.t-ghost{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 14px;border-radius:12px;background:#fff;box-shadow:inset 0 0 0 1px var(--line);font-size:14px;font-weight:500;color:var(--ink);transition:box-shadow .2s}
.t-ghost:hover{box-shadow:inset 0 0 0 1px var(--p-mid)}.t-ghost .ic{width:18px;height:18px;color:var(--ink2)}
.t-icon{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;color:var(--ink2);transition:background .2s}
.t-icon:hover{background:var(--p-tint);color:var(--p-deep)}.t-icon .ic{width:18px;height:18px}
.t-link{color:var(--p-deep);font-size:13px;font-weight:600;text-decoration:underline;text-underline-offset:3px;margin-top:8px}

/* sign in */
.t-login{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 20% 15%,#eef0f6 0,transparent 45%),radial-gradient(circle at 85% 90%,#ece9f6 0,transparent 40%),#f6f7f9}
.t-lcard{width:min(400px,100%);background:#fff;border-radius:28px;padding:40px 34px 34px;text-align:center;box-shadow:0 30px 70px -30px rgba(30,35,50,.25),0 0 0 1px var(--line);display:grid;gap:12px;animation:sIn .6s both}
.t-logos{display:flex;align-items:center;justify-content:center;gap:16px;margin-bottom:8px}.t-logos img{height:54px}.t-logos i{width:1px;height:40px;background:var(--line)}
.t-lcard h1{font-size:26px;font-weight:500}.t-lcard h1 b{font-weight:700}
.t-lcard p{color:var(--ink3);font-size:14px;margin-bottom:8px}
.t-lcard input{height:50px;border-radius:14px;border:1.5px solid var(--line);padding:0 16px;font-size:16px;text-align:center;outline:0}
.t-lcard input:focus{border-color:var(--ink)}
.t-lcard .t-btn{height:50px;background:#1d2330;color:#fff}

/* home */
.t-hero h1{font-size:36px;font-weight:700;letter-spacing:-.02em}
.t-hero p{color:var(--ink2);margin-top:6px}
.t-folders{display:grid;grid-template-columns:repeat(auto-fill,minmax(184px,1fr));gap:26px 22px;margin-top:30px}
.fold{position:relative;aspect-ratio:1.18;padding:0;text-align:left;animation:sIn .5s calc(var(--k)*35ms) both}
.f-tab{position:absolute;top:0;left:0;width:44%;height:30px;border-radius:14px 14px 0 0;background:var(--p-deep)}
.f-tab::after{content:'';position:absolute;right:-14px;bottom:0;width:28px;height:30px;background:var(--p-deep);transform:skewX(28deg);border-top-right-radius:10px}
.f-body{position:absolute;inset:16px 0 0;border-radius:4px 20px 20px 20px;background:linear-gradient(160deg,var(--p) 0%,color-mix(in srgb,var(--p) 82%,#000) 100%);color:var(--on-p);padding:18px;display:flex;flex-direction:column;box-shadow:0 18px 34px -20px var(--p);transition:transform .25s cubic-bezier(.2,.8,.2,1),box-shadow .25s}
.f-paper{position:absolute;left:14px;right:14px;top:10px;height:40px;border-radius:10px;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.05);transition:transform .25s cubic-bezier(.2,.8,.2,1)}
.fold:hover .f-body{transform:translateY(-4px) rotate(-.6deg);box-shadow:0 26px 40px -20px var(--p)}
.fold:hover .f-paper{transform:translateY(-9px) rotate(1.5deg)}
.f-ic{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:rgba(255,255,255,.2)}
.f-ic .ic{width:26px;height:26px}
.f-nm{margin-top:auto;font-size:20px;font-weight:700;letter-spacing:-.01em}
.f-ct{font-size:13px;opacity:.82;margin-top:2px}


/* subject */
.t-shead{margin-bottom:8px}
.t-back{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--ink2);margin-bottom:14px}
.t-back:hover{color:var(--p-deep)}.t-back .ic{width:17px;height:17px}
.t-stitle{display:flex;align-items:center;gap:16px}
.t-sic{width:58px;height:58px;border-radius:18px;background:var(--p);color:var(--on-p);display:grid;place-items:center;box-shadow:0 14px 26px -14px var(--p)}
.t-sic .ic{width:30px;height:30px}
.t-stitle h1{font-size:36px;font-weight:700;letter-spacing:-.02em;color:var(--p-ink)}
.t-grades{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.gp{display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 18px;border-radius:99px;background:#fff;box-shadow:inset 0 0 0 1.5px var(--p-line);font-weight:600;font-size:14px;color:var(--ink2);transition:.2s}
.gp:hover{box-shadow:inset 0 0 0 1.5px var(--p-mid)}
.gp.on{background:var(--p);color:var(--on-p);box-shadow:0 8px 16px -10px var(--p)}
.gp.add{background:transparent;box-shadow:inset 0 0 0 1.5px var(--p-line);border:0;color:var(--p-deep)}.gp .ic{width:16px;height:16px}
.t-unit{margin-top:34px;animation:sIn .45s both}
.u-h span{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--p)}
.u-h h2{font-size:21px;font-weight:600;margin-top:2px;color:var(--p-ink)}
.u-list{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.acard{display:grid;grid-template-columns:auto 1fr auto auto auto auto;align-items:center;gap:20px;padding:14px 16px 14px 14px;border-radius:20px;background:#fff;box-shadow:0 0 0 1px var(--p-line);cursor:pointer;transition:box-shadow .2s,transform .2s}
.acard:hover{box-shadow:0 0 0 1.5px var(--p-mid),0 16px 30px -22px var(--p);transform:translateY(-1px)}
.a-num{min-width:54px;height:54px;padding:0 8px;border-radius:16px;background:var(--p-tint);color:var(--p-deep);display:grid;place-items:center;font-weight:700;font-size:17px}
.a-num.big{min-width:68px;height:68px;font-size:22px;border-radius:20px}
.a-txt b{display:block;font-size:17px;font-weight:600;color:var(--p-ink)}
.a-txt small{display:block;font-size:13px;color:var(--ink3);margin-top:3px}
.a-stat{display:flex;align-items:center;gap:9px}
.a-stat svg{width:38px;height:38px;transform:rotate(-90deg)}
.a-stat circle{fill:none;stroke:var(--p-tint);stroke-width:4.5}.a-stat .v{stroke:var(--p);stroke-linecap:round}
.a-stat b,.a-avg b{display:block;font-size:16px;font-weight:700}
.a-stat small,.a-avg small{display:block;font-size:11px;color:var(--ink3);text-transform:uppercase;letter-spacing:.08em}
.a-avg{min-width:70px}
.a-go{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--p-soft);color:var(--p-deep)}.a-go .ic{width:18px;height:18px}
.b-top{color:#17784a}.b-good{color:#3f7a12}.b-mid{color:#94620b}.b-low{color:#b8372e}
.anew,.t-addunit{display:flex;align-items:center;justify-content:center;gap:8px;height:56px;border-radius:20px;border:2px dashed var(--p-line);color:var(--p-deep);font-weight:600;font-size:15px;transition:.2s}
.anew:hover,.t-addunit:hover{background:#fff;border-color:var(--p-mid)}
.t-addunit{width:100%;margin-top:34px}
.t-empty{display:grid;place-items:center;gap:12px;padding:60px 20px;color:var(--ink3);text-align:center;background:#fff;border-radius:22px;margin-top:20px;box-shadow:0 0 0 1px var(--p-line)}
.t-empty .ic{width:40px;height:40px;color:var(--p-mid)}

/* assignment */
.t-atitle{display:flex;align-items:center;gap:18px}
.t-atitle h1{font-size:32px;font-weight:700;letter-spacing:-.02em;color:var(--p-ink)}
.t-atitle p{color:var(--ink2);font-size:14px;margin-top:4px}
.dot-open,.dot-closed{display:inline-flex;align-items:center;gap:6px;font-weight:600}
.dot-open{color:#17784a}.dot-closed{color:var(--no)}
.dot-open::before,.dot-closed::before{content:'';width:8px;height:8px;border-radius:50%;background:currentColor}
.dot-open::before{box-shadow:0 0 0 4px #17784a22}
.t-linkbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px}
.lk{flex:1;min-width:240px;display:flex;align-items:center;gap:10px;height:42px;padding:0 14px;border-radius:13px;background:#fff;box-shadow:inset 0 0 0 1px var(--p-line);font-size:14px;color:var(--ink2);overflow:hidden;white-space:nowrap}
.lk .ic{color:var(--p);width:18px;height:18px}.lk span{overflow:hidden;text-overflow:ellipsis}
.t-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:26px 0 30px}
.kpi{background:#fff;border-radius:20px;padding:17px 20px;box-shadow:0 0 0 1px var(--p-line)}
.kpi>span{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3)}
.kpi>b{display:block;font-size:34px;font-weight:700;letter-spacing:-.02em;color:var(--p-ink);margin:2px 0}
.kpi>b small{font-size:18px;color:var(--ink3);font-weight:500}
.kpi>small{font-size:12px;color:var(--ink3)}
.kpi.warn>b{color:var(--no)}
.t-tabs{display:flex;gap:4px;border-bottom:1px solid var(--p-line)}
.t-tabs button{display:flex;align-items:center;gap:8px;padding:12px 16px;font-weight:600;font-size:15px;color:var(--ink3);border-bottom:2.5px solid transparent;margin-bottom:-1px}
.t-tabs button.on{color:var(--p-deep);border-color:var(--p)}.t-tabs .ic{width:18px;height:18px}
.t-table{margin-top:16px;background:#fff;border-radius:20px;box-shadow:0 0 0 1px var(--p-line);overflow:hidden}
.tr{display:grid;grid-template-columns:2.4fr .7fr .6fr .6fr 1fr .9fr;gap:12px;align-items:center;padding:12px 20px;border-top:1px solid var(--p-line)}
.tr.th{border:0;background:var(--p-soft);padding-top:10px;padding-bottom:10px}
.tr.th button,.tr.th span{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3)}
.tr.th button.on{color:var(--p-deep)}.tr.th button.on::after{content:' ↓'}
.srow-t{cursor:pointer;transition:background .15s}.srow-t:hover{background:var(--p-soft)}
.who{display:flex;align-items:center;gap:12px;min-width:0}
.who>span{min-width:0}.who b{display:block;font-weight:600;font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.unnamed{display:block;font-size:12px;color:#b07a12}
.av{flex:none;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--p-tint);color:var(--p-deep);font-style:normal;font-weight:700;font-size:13px}
.av.sm{width:26px;height:26px;font-size:11px}.av.lg{width:58px;height:58px;font-size:20px}
.flag{display:inline-flex;align-items:center;gap:3px;font-style:normal;font-size:12px;font-weight:600;color:#c2410c;background:#fff1e8;padding:2px 7px;border-radius:99px;white-space:nowrap}
.flag .ic{width:12px;height:12px}
.pill{display:inline-block;padding:4px 11px;border-radius:99px;font-size:14px;font-weight:700}
.pill.b-top{background:#def5e8}.pill.b-good{background:#eaf4dc}.pill.b-mid{background:#fff1d6}.pill.b-low{background:#fde3e0}
.muted{color:var(--ink2);font-size:14px}
.spark{width:84px;height:26px;overflow:visible}.spark polyline{fill:none;stroke:var(--p);stroke-width:2;stroke-linejoin:round}.spark circle{fill:var(--p)}
.t-notyet{margin-top:24px}
.t-notyet h3{font-size:15px;font-weight:600;color:var(--ink2);margin-bottom:10px}.t-notyet h3 span{color:var(--ink3);font-weight:500}
.t-notyet>div{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:4px 14px 4px 4px;border-radius:99px;background:#fff;box-shadow:0 0 0 1px var(--p-line);font-size:14px}
.t-hint{color:var(--ink3);font-size:14px;margin-top:16px}
.t-qlist{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.qrow{position:relative;display:grid;grid-template-columns:104px 1fr 250px;gap:18px;align-items:center;padding:16px 20px;border-radius:18px;background:#fff;box-shadow:0 0 0 1px var(--p-line)}
.qrow.hard{box-shadow:0 0 0 1.5px #f3b7b1}
.qk{justify-self:start;padding:4px 10px;border-radius:99px;background:var(--p-tint);color:var(--p-deep);font-size:12px;font-weight:600;white-space:nowrap}
.qrow p{font-size:15px;line-height:1.4}
.qr{display:flex;align-items:center;gap:10px}
.qbar{flex:none;width:96px;height:8px;border-radius:8px;background:#eef0f3;overflow:hidden}
.qbar i{display:block;height:100%;border-radius:8px}
.qbar i.b-top{background:var(--ok)}.qbar i.b-good{background:#7cb342}.qbar i.b-mid{background:var(--part)}.qbar i.b-low{background:var(--no)}
.qr b{font-size:16px;font-weight:700;min-width:42px}.qr small{font-size:12px;color:var(--ink3);white-space:nowrap}
.qtag{position:absolute;top:-9px;right:18px;padding:2px 10px;border-radius:99px;background:var(--no);color:#fff;font-size:11px;font-style:normal;font-weight:600}

/* drawer */
.t-drawer{position:fixed;inset:0;z-index:60;background:rgba(20,24,33,0);transition:background .3s}
.t-drawer.on{background:rgba(20,24,33,.32)}
.dr-in{position:absolute;top:0;right:0;bottom:0;width:min(500px,100%);background:#fff;overflow:auto;padding:28px 26px 40px;transform:translateX(100%);transition:transform .35s cubic-bezier(.2,.8,.2,1);box-shadow:-20px 0 60px -30px rgba(0,0,0,.3)}
.t-drawer.on .dr-in{transform:none}
.dr-x{position:absolute;top:18px;right:18px}
.dr-who{display:flex;align-items:center;gap:16px}
.dr-who h2{font-size:22px;font-weight:700}.dr-who p{font-size:13px;color:var(--ink3)}
.dr-name{display:flex;gap:8px;margin-top:16px;padding:12px;border-radius:16px;background:#fff8ea}
.dr-name input{flex:1;height:40px;border-radius:11px;border:1.5px solid #f0d9a8;padding:0 12px;outline:0}
.dr-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0 24px}
.dr-stats span{padding:12px 14px;border-radius:16px;background:var(--p-soft);font-size:12px;color:var(--ink3)}
.dr-stats b{display:block;font-size:22px;color:var(--p-ink)}
.t-drawer h3{font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3);margin-bottom:10px}
.dr-try{border-radius:16px;box-shadow:0 0 0 1px var(--p-line);margin-bottom:10px;overflow:hidden}
.dr-try summary{display:flex;align-items:center;gap:12px;padding:13px 16px;list-style:none;cursor:pointer}
.dr-try summary::-webkit-details-marker{display:none}
.dt-n{font-weight:700}.dt-w{flex:1;font-size:13px;color:var(--ink3);display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.dt-dots{display:flex;gap:4px;padding:0 16px 14px}
.dt-dots i{flex:1;height:6px;border-radius:3px}
i.ok{background:var(--ok)}i.no{background:var(--no)}i.part{background:var(--part)}
.dt-qs{list-style:none;padding:0 16px 10px}
.dt-qs li{display:flex;gap:9px;align-items:flex-start;padding:9px 0;border-top:1px solid var(--p-line);font-size:14px;line-height:1.4}
.dt-qs .ic{width:17px;height:17px;stroke-width:2.6;margin-top:1px}
.dt-qs li.ok .ic{color:var(--ok)}.dt-qs li.no .ic{color:var(--no)}.dt-qs li.part .ic{color:var(--part)}
.dt-qs span{flex:1}.dt-qs small{color:#94620b;font-weight:600}

/* modal */
.t-modal{position:fixed;inset:0;z-index:70;display:grid;place-items:center;padding:16px;background:rgba(20,24,33,0);transition:background .25s}
.t-modal.on{background:rgba(20,24,33,.4)}
.m-card{position:relative;width:min(560px,100%);max-height:92vh;overflow:auto;background:#fff;border-radius:26px;padding:30px 30px 26px;transform:scale(.96) translateY(10px);opacity:0;transition:.25s cubic-bezier(.2,.8,.2,1)}
.t-modal.on .m-card{transform:none;opacity:1}
.m-card.wide{width:min(760px,100%)}.m-card.narrow{width:min(380px,100%);text-align:center}
.m-x{position:absolute;top:16px;right:16px}
.m-card h2{font-size:24px;font-weight:700;letter-spacing:-.01em}
.m-sub{color:var(--ink3);font-size:14px;margin:4px 0 18px}
.f-l{display:block;font-size:13px;font-weight:600;color:var(--ink2);margin:16px 0 7px}
.f-h{font-size:12px;color:var(--ink3);margin-top:-3px}
.f-in{width:100%;height:46px;border-radius:13px;border:1.5px solid var(--line);padding:0 14px;font-size:15px;outline:0;background:#fff}
.f-in:focus{border-color:var(--p)}
.f-grid{display:grid;grid-template-columns:1fr 110px;gap:12px}
.drop{display:block;cursor:pointer}
.dz{display:flex;flex-direction:column;align-items:center;gap:4px;padding:22px;border-radius:18px;border:2px dashed var(--p-line);color:var(--ink2);text-align:center;transition:.2s}
.dz .ic{width:30px;height:30px;color:var(--p);margin-bottom:4px}.dz small{color:var(--ink3);font-size:13px}
.drop.over .dz,.dz:hover{background:var(--p-soft);border-color:var(--p-mid)}
.dz.ok{border-style:solid;border-color:var(--ok);background:#f1faf5}.dz.ok .ic{color:var(--ok)}
.f-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:6px;padding:4px 0}
.f-row.col{flex-wrap:wrap}.f-row .f-l{margin-top:12px}
.step{display:flex;align-items:center;gap:4px;flex:none}
.step button{width:38px;height:38px;border-radius:11px;background:#fff;box-shadow:inset 0 0 0 1.5px var(--line);font-size:20px;line-height:1}
.step button:hover{box-shadow:inset 0 0 0 1.5px var(--p)}
.step b{min-width:44px;text-align:center;font-size:19px}
.seg{display:flex;padding:4px;border-radius:13px;background:#f0f1f4}
.seg button{padding:8px 16px;border-radius:10px;font-size:14px;font-weight:600;color:var(--ink2)}
.seg button.on{background:#fff;color:var(--p-deep);box-shadow:0 2px 6px rgba(0,0,0,.08)}
.f-lim{display:flex;align-items:center;gap:12px;width:100%;padding:10px 12px;border-radius:14px;background:var(--p-soft)}
.f-lim span{font-size:14px;color:var(--ink2)}
.sw input{display:none}
.sw i{display:block;width:46px;height:28px;border-radius:99px;background:#d9dce3;position:relative;transition:.2s;cursor:pointer}
.sw i::after{content:'';position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:.2s}
.sw input:checked+i{background:var(--p)}.sw input:checked+i::after{left:21px}
[data-cld]{margin-top:8px}
.m-acts{display:flex;justify-content:flex-end;gap:10px;margin-top:26px}
.m-card.narrow .m-acts{justify-content:center}
.ros{display:grid;gap:6px;max-height:56vh;overflow:auto;padding:2px}
.ros-r{display:grid;grid-template-columns:1.3fr 1.3fr 90px;gap:8px;align-items:center}
.ros-e{font-size:13px;color:var(--ink2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ros input{height:40px;border-radius:11px;border:1.5px solid var(--line);padding:0 12px;outline:0;font-size:14px}
.ros input:focus{border-color:var(--ink)}
.ros-r.new .ros-n{border-color:#f0c97a;background:#fffaf0}
.qr-big{width:250px;margin:6px auto 12px}.qr-big svg{width:100%;height:auto;display:block}
.qr-miss{display:grid;place-items:center;height:250px;border-radius:20px;background:var(--p-soft)}.qr-miss .ic{width:60px;height:60px;color:var(--p-mid)}
.t-toast{position:fixed;left:50%;bottom:26px;z-index:99;display:flex;align-items:center;gap:8px;padding:11px 20px;border-radius:99px;background:#1d2330;color:#fff;font-size:14px;font-weight:500;transform:translate(-50%,30px);opacity:0;transition:.3s}
.t-toast.on{transform:translate(-50%,0);opacity:1}.t-toast .ic{width:17px;height:17px;color:#7ee2a8}

@media(max-width:820px){
  .t-bar{padding:0 16px}.t-brand span{display:none}.t-ghost span{display:none}
  .t-main{padding:24px 16px 80px}
  .acard{grid-template-columns:auto 1fr auto;gap:14px}.a-stat,.acard [data-copy],.a-go{display:none}
  .t-kpis{grid-template-columns:1fr 1fr}
  .tr{grid-template-columns:2fr .8fr .6fr;}.tr>:nth-child(3),.tr>:nth-child(5),.tr>:nth-child(6){display:none}
  .qrow{grid-template-columns:1fr}.ros-r{grid-template-columns:1fr 1fr}.ros-e{grid-column:1/-1}
  .t-atitle h1{font-size:25px}
}

/* ================= added for the live site ================= */
a{color:inherit;text-decoration:none}
.fold{display:block}
.locked .opt.chosen{opacity:1;border-color:var(--p)}
.dz.bad{border-color:var(--no);background:#fdf3f2}.dz.bad .ic{color:var(--no)}
.t-loading{display:flex;justify-content:center;gap:8px;padding:120px 0}
.t-loading i{width:10px;height:10px;border-radius:50%;background:var(--p-mid);animation:bob .9s ease-in-out infinite}
.t-loading i:nth-child(2){animation-delay:.15s}.t-loading i:nth-child(3){animation-delay:.3s}
.t-toast.bad{background:#b8372e}.t-toast.bad .ic{color:#fff}
.t-ghost.danger{color:var(--no)}.t-ghost.danger .ic{color:var(--no)}
.t-ghost.danger.sure{background:var(--no);color:#fff;box-shadow:none}.t-ghost.danger.sure .ic{color:#fff}
.m-card.left{text-align:left}.m-card.narrow form .m-acts{justify-content:flex-end}
.m-card.narrow.left{width:min(420px,100%)}
.t-icon.sm{width:30px;height:30px;border-radius:9px;display:inline-grid;vertical-align:middle;margin-left:6px;opacity:.5}.t-icon.sm .ic{width:15px;height:15px}
.u-h h2:hover .t-icon.sm{opacity:1}
.gp.edit{padding:0 12px;background:transparent;box-shadow:none;color:var(--ink3)}
.t-tabs .refresh{margin-left:auto;align-self:center}
.ros-find{margin-bottom:12px}
.ros input.saved{border-color:var(--ok);background:#f1faf5}
.t-empty .t-btn{margin-top:6px}
.dr-name.named{background:var(--p-soft)}.dr-name.named input{border-color:var(--p-line)}
.pr-steps{margin:0 0 14px 18px;padding:0;color:var(--ink2);font-size:14px;line-height:1.7}
.pr-text{max-height:42vh;overflow:auto;white-space:pre-wrap;font:12.5px/1.55 ui-monospace,Consolas,monospace;background:#f6f7f9;border-radius:14px;padding:14px 16px;color:var(--ink2);box-shadow:inset 0 0 0 1px var(--line)}
.f-l .t-link{margin:0 0 0 8px;font-size:12px}
@media(max-width:1000px){.t-acts .t-ghost span{display:none}}