.kh{--g:#0F7A66;--g-deep:#0B5C4D;--g-soft:#E3F6F1;--g-line:#CFE6DB;--sun:#FFC93C;--sun-soft:#FFF4D1;--sun-ink:#6B4A00;--blue-soft:#E8F0FB;--blue:#1D4E9E;--ink:#17302A;--ink-2:#4F665E;--ink-3:#687D75;--bg:#F2F7F4;--line:#DCE8E2;--edge:#C7DAD1;--co:#E2603F;--co-soft:#FDEBE6;--co-ink:#7A2614;--f:"Noto Sans","Noto Sans Bengali",system-ui,sans-serif;--sh:0 1px 2px rgba(0,40,28,.06),0 8px 24px rgba(0,40,28,.07);--tap:44px}.kh *{box-sizing:border-box}.kh.pre{--tap:60px}.kh button{font-family:inherit;cursor:pointer}.kh h1,.kh h2,.kh h3{margin:0;line-height:1.25}.kh .sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.kh .khmain{max-width:1180px;margin:0 auto;padding:24px 16px 56px}.kh .hero{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px}.kh .hero h1{font-size:clamp(26px,4.4vw,38px);font-weight:800;letter-spacing:-.01em}.kh .hero p{margin:6px 0 0;color:var(--ink-2);font-size:16px;max-width:560px}.kh .pick{background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:var(--sh);margin-bottom:22px;display:grid;grid-gap:14px;gap:14px}.kh .row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}.kh .row>b{font-size:14px;color:var(--ink-2);min-width:88px}.kh .chips{display:flex;flex-wrap:wrap;gap:8px}.kh .chip{min-height:44px;padding:0 18px;border-radius:999px;border:1.5px solid var(--edge);background:#fff;color:var(--ink);font-weight:700;font-size:15px}.kh .chip[aria-pressed=true]{background:var(--g-deep);border-color:var(--g-deep);color:#fff}.kh .seg{display:inline-flex;border:1.5px solid var(--edge);border-radius:14px;overflow:hidden;background:#fff}.kh .seg button{min-height:44px;padding:0 14px;border:0;background:none;font-weight:700;font-size:14.5px;color:var(--ink-2);display:flex;align-items:center;gap:8px}.kh .seg button+button{border-left:1.5px solid var(--edge)}.kh .seg button[aria-pressed=true]{background:var(--g-soft);color:var(--g-deep)}.kh .seg svg{width:20px;height:20px}.kh .modehint{font-size:14px;color:var(--ink-2);margin:0}.kh .grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:16px;gap:16px}@media (max-width:1020px){.kh .grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:520px){.kh .grid{gap:10px}}.kh .card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:var(--sh);display:flex;flex-direction:column;gap:10px;text-align:left;color:inherit;min-height:200px;transition:transform .12s,box-shadow .12s}.kh .card:hover{transform:translateY(-2px);box-shadow:0 2px 4px rgba(0,40,28,.08),0 14px 30px rgba(0,40,28,.12)}.kh .card:focus-visible{outline:3px solid var(--g);outline-offset:3px}.kh .ct{display:flex;align-items:center;gap:12px}.kh .ic{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;flex:none;font-size:28px;font-weight:800}.kh .ic svg{width:28px;height:28px}.kh .ic.sm{font-size:19px;white-space:nowrap;letter-spacing:-.02em}.kh .sbox .acts{grid-template-columns:1fr}.kh .ct h3{font-size:19px;font-weight:800}.kh .ct small{display:block;font-size:13px;color:var(--ink-3);font-weight:600}.kh .card p{margin:0;color:var(--ink-2);font-size:14.5px;flex:1 1}.kh .src{overflow-wrap:anywhere;font-size:12.5px;color:var(--ink-3);border-top:1px solid var(--line);padding-top:8px}.kh .go{align-self:flex-start;min-height:44px;padding:0 18px;border-radius:12px;background:var(--g-deep);color:#fff;font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:8px}.kh .go svg{width:18px;height:18px}@media (max-width:520px){.kh .card{padding:12px;min-height:0}.kh .ic{width:38px;height:38px;border-radius:12px;font-size:21px}.kh .ic.sm{font-size:14px}.kh .ic svg{width:22px;height:22px}.kh .ct{gap:8px}.kh .ct>div{min-width:0}.kh .ct h3{font-size:15px;white-space:nowrap}.kh .card p{font-size:13.5px}.kh .go{width:100%;justify-content:center}}.kh .notes{margin-top:26px;display:grid;grid-template-columns:repeat(2,1fr);grid-gap:16px;gap:16px}@media (max-width:760px){.kh .notes{grid-template-columns:1fr}}.kh .note{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}.kh .note h3{font-size:16px;display:flex;align-items:center;gap:10px;margin-bottom:6px}.kh .note h3 svg{width:22px;height:22px;color:var(--g-deep);flex:none}.kh .note p{margin:0;font-size:14.5px;color:var(--ink-2)}.kh .stage{position:fixed;inset:0;z-index:100;background:var(--bg);display:none;flex-direction:column}.kh .stage.on{display:flex}.kh .sbar{background:#fff;border-bottom:1px solid var(--line)}.kh .sbin{max-width:760px;margin:0 auto;height:60px;padding:0 12px;display:flex;align-items:center;gap:10px}.kh .ibtn{width:var(--tap);height:var(--tap);min-width:44px;min-height:44px;border:0;border-radius:14px;background:var(--bg);display:grid;place-items:center;color:var(--ink);flex:none}.kh .ibtn svg{width:24px;height:24px}.kh .sname{font-weight:800;font-size:16px;display:flex;align-items:center;gap:8px;min-width:0}.kh .sname span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.kh .dots{display:flex;gap:5px;flex:1 1;justify-content:flex-end;flex-wrap:wrap}.kh .dots i{width:10px;height:10px;border-radius:50%;background:var(--line)}.kh .dots i.ok{background:var(--g)}.kh .dots i.try{background:var(--sun)}.kh .dots i.now{background:var(--g-deep);box-shadow:0 0 0 3px var(--g-soft)}.kh .clock{font-weight:700;font-size:14px;color:var(--ink-2);display:flex;align-items:center;gap:4px}.kh .clock svg{width:16px;height:16px}.kh .sbody{flex:1 1;overflow:auto;display:flex}.kh .sin{max-width:760px;width:100%;margin:0 auto;padding:18px 16px 24px}.kh .intro,.kh .sin{display:flex;flex-direction:column}.kh .intro{margin:auto;text-align:center;align-items:center;gap:14px;max-width:520px}.kh .intro .big{width:96px;height:96px;border-radius:28px;display:grid;place-items:center;font-size:52px;font-weight:800}.kh .intro .big svg{width:52px;height:52px}.kh .intro h2{font-size:28px;font-weight:800}.kh .intro p{margin:0;color:var(--ink-2);font-size:16px}.kh .who{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px 14px;text-align:left;font-size:15px;color:var(--ink-2)}.kh .who svg{width:28px;height:28px;color:var(--g-deep);flex:none}.kh .tchips{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.kh .start{min-height:60px;padding:0 34px;border:0;border-radius:18px;background:var(--g-deep);color:#fff;font-weight:800;font-size:20px;box-shadow:0 6px 0 #00523C}.kh .start:active{transform:translateY(3px);box-shadow:0 3px 0 #00523C}.kh .count{margin:auto;width:220px;height:220px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:110px;font-weight:800;transition:background .2s}.kh .count.go{background:var(--g);font-size:64px}.kh .count b{animation:kh-zoom .7s ease-out}@keyframes kh-zoom{0%{transform:scale(1.8);opacity:0}to{transform:scale(1);opacity:1}}.kh .q{display:flex;flex-direction:column;gap:16px;flex:1 1}.kh .qtop{display:flex;align-items:center;gap:12px}.kh .spk{width:64px;height:64px;border-radius:20px;border:0;background:var(--sun);color:var(--sun-ink);display:grid;place-items:center;flex:none;box-shadow:0 4px 0 #E0A800}.kh .spk svg{width:32px;height:32px}.kh .spk.on{animation:kh-pulse 1s infinite}@keyframes kh-pulse{50%{transform:scale(1.07)}}.kh .qtxt{font-size:24px;font-weight:800;line-height:1.3}.kh .qsub{font-size:15px;color:var(--ink-2);font-weight:600}.kh .pic{background:#fff;border:1px solid var(--line);border-radius:22px;min-height:150px;display:flex;flex-wrap:wrap;align-content:center;justify-content:center;gap:6px;padding:16px;font-size:44px;line-height:1.15}.kh .pic.many{font-size:34px}.kh .opts{display:grid;grid-gap:12px;gap:12px;grid-template-columns:repeat(3,1fr)}.kh .opts.n2,.kh .opts.n4{grid-template-columns:repeat(2,1fr)}.kh .opt{position:relative;min-height:96px;border-radius:22px;border:2px solid var(--line);background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:10px;font-size:46px;font-weight:800;color:var(--ink);box-shadow:0 4px 0 var(--line);transition:transform .08s}.kh .opt:active{transform:translateY(3px);box-shadow:0 1px 0 var(--line)}.kh .opt .lb{font-size:15px;font-weight:700;color:var(--ink-2)}.kh .opt.txt{font-size:20px;line-height:1.35;min-height:72px}.kh.pre .opt{min-height:120px;font-size:60px}.kh.pre .opt.txt{font-size:26px}.kh .opt.right{border-color:var(--g);background:var(--g-soft);box-shadow:0 4px 0 var(--g)}.kh .opt.miss{animation:kh-shake .35s}.kh .opt.show{border-color:var(--g);border-style:dashed}@keyframes kh-shake{25%{transform:translateX(-7px)}75%{transform:translateX(7px)}}.kh .opt .tick{position:absolute;top:8px;right:8px;width:30px;height:30px;border-radius:50%;background:var(--g);color:#fff;display:none;place-items:center}.kh .opt.right .tick{display:grid}.kh .opt .tick svg{width:18px;height:18px}.kh .slots{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.kh .slot{min-width:96px;min-height:96px;border-radius:20px;border:2.5px dashed var(--edge);display:grid;place-items:center;font-size:44px;font-weight:800;background:#fff;padding:6px 10px}.kh .slot.txt{font-size:18px;min-width:140px;max-width:100%;text-align:center}.kh .slot.f{border-style:solid;border-color:var(--g);background:var(--g-soft)}.kh .slot.bad{border-color:var(--sun);background:var(--sun-soft)}.kh .olinks{display:flex;justify-content:center}.kh .lnk{min-height:44px;border:0;background:none;color:var(--g-deep);font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:6px}.kh .lnk svg{width:18px;height:18px}.kh .fb{min-height:28px;text-align:center;font-weight:800;font-size:18px;color:var(--g-deep)}.kh .fb.soft{color:var(--sun-ink)}.kh .adult{margin-top:auto;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px 12px;display:flex;flex-wrap:wrap;align-items:center;gap:8px}.kh .adult b{font-size:13.5px;color:var(--ink-2);flex:1 1;min-width:140px}.kh .abtn{min-height:44px;padding:0 14px;border-radius:12px;border:1.5px solid var(--edge);background:#fff;font-weight:700;font-size:14.5px;color:var(--ink);display:inline-flex;align-items:center;gap:6px}.kh .abtn svg{width:18px;height:18px}.kh .abtn.ok{background:var(--g-deep);border-color:var(--g-deep);color:#fff}.kh .res{margin:auto;width:100%;max-width:560px;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}.kh .res h2{font-size:28px;font-weight:800}.kh .score{font-size:20px;font-weight:700;color:var(--ink-2)}.kh .score b{color:var(--g-deep);font-size:44px;display:block;line-height:1.1}.kh .tray{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;max-width:100%}.kh .tray span{min-width:48px;height:48px;padding:0 8px;border-radius:14px;background:#fff;border:1px solid var(--line);display:grid;place-items:center;font-size:24px;font-weight:800}.kh .grp{background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px 14px;width:100%;text-align:left;display:grid;grid-gap:6px;gap:6px}.kh .grp .lvl{display:flex;gap:6px;flex-wrap:wrap}.kh .grp .lvl span{padding:6px 12px;border-radius:999px;font-weight:700;font-size:13.5px;background:var(--bg);color:var(--ink-3)}.kh .grp .lvl span.on{background:var(--g-soft);color:var(--g-deep);box-shadow:inset 0 0 0 1.5px var(--g-line)}.kh .grp p{margin:0;font-size:14px;color:var(--ink-2)}.kh .namein{display:flex;flex-direction:column;gap:6px;width:100%;text-align:left}.kh .namein label{font-size:14px;font-weight:700;color:var(--ink-2)}.kh .namein input{min-height:48px;border-radius:14px;border:1.5px solid var(--edge);padding:0 14px;font-family:inherit;font-size:16px}.kh .acts{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:10px;gap:10px;width:100%}.kh .acts .abtn{justify-content:center;min-height:52px}.kh .acts .wide{grid-column:1/-1}.kh #confetti{position:fixed;inset:0;pointer-events:none;z-index:300}.kh .sheet{position:fixed;inset:0;z-index:400;background:rgba(11,42,32,.5);display:none;align-items:center;justify-content:center;padding:16px}.kh .sbox,.kh .sheet.on{display:flex}.kh .sbox{background:#fff;border-radius:22px;max-width:420px;width:100%;padding:16px;flex-direction:column;gap:12px;max-height:100%;overflow:auto}.kh .sbox canvas{width:100%;height:auto;border-radius:14px;border:1px solid var(--line)}.kh .shd{display:flex;align-items:center;justify-content:space-between}.kh .shd b{font-size:17px}.kh .toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:12px 18px;border-radius:12px;font-weight:600;font-size:14.5px;z-index:500;display:none}.kh .toast.on{display:block}@media (max-width:520px){.kh .qtxt{font-size:21px}.kh .opt{min-height:88px;font-size:40px}.kh.pre .opt{min-height:110px;font-size:54px}.kh .count{width:180px;height:180px;font-size:90px}.kh .acts{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){.kh *{animation:none!important;transition:none!important}}.kh{background:var(--bg);color:var(--ink);font-family:var(--f);font-size:16px;line-height:1.5}.kh .pic img{max-width:100%;max-height:260px;object-fit:contain}.kh .opt img{width:96px;height:96px;object-fit:contain;pointer-events:none}.kh.pre .opt img{width:120px;height:120px}.kh .card[disabled]{opacity:.55;cursor:default;transform:none}.kh .soon{font-size:13px;font-weight:700;color:var(--sun-ink);background:var(--sun-soft);border-radius:999px;padding:3px 10px;align-self:flex-start}.kh .opt.wait{opacity:.7}