@import "https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@400;500;600;700&family=Inter:wght@400;600;700;800&display=swap";
:root{--ink:#1e1b4b;--indigo:#312e81;--violet:#4338ca;--violet-700:#3730a3;--violet-50:#eef2ff;--violet-900:#312e81;--lavender:#e0e7ff;--sand:#fbf9f4;--gold:#f59e0b;--coral:#dc2626;--slate:#52525b;--slate-400:#9ca3af;--line:#e5e7eb;--s-math:#ec4899;--s-sci:#16a34a;--s-eng:#0891b2;--s-bng:#4338ca;--s-soc:#0ea5e9;--s-ict:#6366f1;--bn:"Hind Siliguri", "Kalpurush", "SolaimanLipi", "Noto Sans Bengali", system-ui, sans-serif;--num:"Inter", system-ui, -apple-system, sans-serif;--r-card:12px;--r-list:11px;--r-btn:10px;--tap:44px;--shadow-sm:0 1px 2px #1e1b4b0f;--shadow-md:0 4px 16px #1e1b4b14;--shadow-lg:0 12px 40px #1e1b4b29;--safe-b:env(safe-area-inset-bottom,0px)}*,:before,:after{box-sizing:border-box}html,body{height:100%;margin:0}body{font-family:var(--bn);background:var(--sand);color:var(--ink);-webkit-font-smoothing:antialiased;overscroll-behavior-y:none;font-size:15px;line-height:1.65}.num{font-family:var(--num);font-feature-settings:"tnum";font-weight:700}button,input,textarea{font:inherit;color:inherit}button{cursor:pointer;background:0 0;border:none}:focus-visible{outline:3px solid var(--violet);outline-offset:2px;border-radius:6px}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:#d6d3e4;border-radius:8px}.tick{display:block}.tick path{fill:none;stroke:currentColor;stroke-width:19px;stroke-linecap:round;stroke-linejoin:round}.tick.draw path{stroke-dasharray:160;stroke-dashoffset:160px;animation:.85s cubic-bezier(.6,.05,.3,1) forwards draw}@keyframes draw{to{stroke-dashoffset:0}}.tick.loop path{stroke-dasharray:160;animation:1.4s cubic-bezier(.6,.05,.3,1) 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13px;font-size:15px;transition:all .16s}.inp-wrap .pre~.inp{font-family:var(--num);padding-left:52px;font-weight:600}.inp-wrap .eye~.inp{padding-right:48px}.inp::placeholder{color:var(--slate-400);font-family:var(--bn);font-weight:400}.inp:focus{border-color:var(--violet);outline:none;box-shadow:0 0 0 3px #4338ca21}.forgot{text-align:right;color:var(--violet);margin:-4px 0 16px;font-size:12.5px;font-weight:600;text-decoration:none;display:block}.btn{border-radius:var(--r-btn);justify-content:center;align-items:center;gap:8px;width:100%;min-height:52px;font-size:15.5px;font-weight:600;transition:all .16s;display:inline-flex}.btn-primary{color:#fff;background:linear-gradient(96deg,#4338ca,#3730a3);box-shadow:0 8px 22px #4338ca4d}.btn-primary:hover{background:linear-gradient(96deg,#4f46e5,#4338ca)}.btn-primary:active{transform:scale(.99)}.btn-ghost{border:1.5px solid 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.ln{background:var(--line);flex:1;max-width:26px;height:1.5px}.otp-row{justify-content:space-between;gap:8px;margin-bottom:10px;display:flex}.otp-box{text-align:center;width:100%;max-width:52px;height:54px;font-family:var(--num);border:1.5px solid var(--line);background:#fff;border-radius:11px;font-size:20px;font-weight:800;transition:all .15s}.otp-box:focus{border-color:var(--violet);outline:none;box-shadow:0 0 0 3px #4338ca21}.otp-meta{color:var(--slate);justify-content:space-between;align-items:center;margin-bottom:16px;font-size:12.5px;display:flex}.otp-meta button{color:var(--violet);font-size:12.5px;font-weight:600}.back-lnk{color:var(--slate);align-items:center;gap:5px;min-height:38px;margin-top:14px;font-size:12.5px;font-weight:600;display:inline-flex}.back-lnk:hover{color:var(--violet)}.legal{color:var(--slate);text-align:center;margin-top:14px;font-size:11.5px;line-height:1.6}.legal a{color:var(--violet);text-decoration:none}@media (min-width:900px){#scr-auth{flex-direction:row}.auth-brand{flex-direction:column;flex:0 0 47%;justify-content:center;max-width:620px;padding:54px;display:flex}.auth-pane{border-radius:0;align-items:center;margin-top:0;padding:40px}}#scr-chat{height:100dvh;overflow:hidden}.side{border-right:1px solid var(--line);background:#fff;flex-direction:column;flex:0 0 min(290px,88vw);width:min(290px,88vw);transition:margin-left .2s ease-in-out,opacity .2s ease-in-out;display:none}.side.open{z-index:95;box-shadow:var(--shadow-lg);display:flex;position:fixed;top:0;bottom:0;left:0}@media (min-width:1000px){.side{width:262px;box-shadow:none;flex:0 0 262px;display:none;position:relative}.side.open{box-shadow:none;display:flex;position:relative}.side-brand .icon-btn{display:none}}.side-top{border-bottom:1px solid var(--line);padding:28px 12px 14px}.side-brand{justify-content:center;align-items:center;margin-bottom:28px;display:flex;position:relative}.side-brand>span:first-child{display:none}.side-brand .icon-btn{position:absolute;top:50%;right:0;transform:translateY(-50%)}.side-brand .tick{width:100%;max-width:none;height:auto;margin:0 auto}.side-brand b{font-size:15.5px}.new-chat{border-radius:var(--r-btn);background:var(--violet);color:#fff;justify-content:center;align-items:center;gap:7px;width:100%;min-height:44px;font-size:14px;font-weight:600;display:flex}.side-list{flex:1;padding:10px 9px;overflow-y:auto}.side-lbl{letter-spacing:.6px;color:var(--slate-400);padding:10px 6px 6px;font-size:11px;font-weight:700}.hist{text-align:left;border-radius:9px;align-items:center;gap:8px;width:100%;min-height:42px;padding:9px;font-size:13.5px;transition:all .14s;display:flex}.hist:hover{background:var(--lavender)}.hist.active{background:var(--violet-50);color:var(--violet-700);font-weight:600}.hist span{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.hist small{font-family:var(--num);color:var(--slate-400);font-size:11px;font-weight:600}.side-foot{border-top:1px solid var(--line);padding:11px 13px}.quota{background:var(--lavender);border-radius:10px;padding:10px 11px;font-size:12.5px}.quota .top{justify-content:space-between;display:flex}.quota .bar{background:#ddd9ee;border-radius:99px;height:6px;margin:7px 0 5px;overflow:hidden}.quota .bar i{background:var(--violet);border-radius:99px;height:100%;transition:width .4s;display:block}.quota a{color:var(--violet);font-weight:600;text-decoration:none}.chat-main{background:var(--sand);flex-direction:column;flex:1;min-width:0;display:flex}.chat-top{border-bottom:1px solid var(--line);background:#fff;flex:none;align-items:center;gap:8px;padding:8px 10px;display:flex}.icon-btn{width:var(--tap);height:var(--tap);color:var(--ink);border-radius:11px;flex:none;place-items:center;transition:all .15s;display:grid}.icon-btn:hover{background:var(--lavender)}.icon-btn svg{stroke:currentColor;fill:none;stroke-width:1.9px;stroke-linecap:round;stroke-linejoin:round;width:21px;height:21px}@media (min-width:1000px){.only-mob{display:none!important}}.picker{background:var(--violet-50);min-width:0;color:var(--violet-700);border:1px solid #ddd6fe;border-radius:999px;flex:1;justify-content:center;align-items:center;gap:7px;max-width:340px;min-height:38px;margin:0 auto;padding:6px 14px;font-size:13.5px;font-weight:600;display:flex}.picker b{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.picker svg{stroke:currentColor;fill:none;stroke-width:2.3px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:14px;height:14px}.thread{scroll-behavior:smooth;flex:1;padding:16px 14px 6px;overflow-y:auto}.thread-in{max-width:760px;margin:0 auto}.hero-ask{text-align:center;padding:22px 4px 16px}.hero-ask .tick{width:80px;height:80px;margin:0 auto 13px}.hero-ask h3{color:var(--violet-700);margin:0 0 5px;font-size:20px;font-weight:700}.hero-ask p{color:var(--slate);max-width:330px;margin:0 auto;font-size:13.5px}.modes{flex-wrap:wrap;justify-content:center;gap:7px;margin:18px 0 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.lock{background:#fef3c7;border-radius:99px;place-items:center;width:34px;height:34px;display:grid}.paywall-h b{font-size:14.5px}.paywall p{color:var(--slate);margin:0 0 12px;font-size:13px}.plans{grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px;display:grid}.plan{border:1px solid var(--line);text-align:center;border-radius:10px;padding:10px 8px;position:relative}.plan.best{border:1.5px solid var(--violet);background:var(--violet-50)}.plan .p{font-family:var(--num);font-size:17px;font-weight:800}.plan .d{color:var(--slate);font-size:11.5px}.plan .tag{background:var(--violet);color:#fff;white-space:nowrap;border-radius:99px;padding:2px 8px;font-size:10px;font-weight:700;position:absolute;top:-9px;left:50%;transform:translate(-50%)}.app-btns{grid-template-columns:1fr;gap:8px;display:grid}@media (min-width:520px){.app-btns{grid-template-columns:1.3fr 1fr}}.app-btns 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0;border:none;width:100%;max-height:130px;padding:11px 8px 4px;font-size:15px;line-height:1.5}#msgbox:focus{outline:none}.comp-row{align-items:center;gap:6px;display:flex}.comp-btn{width:40px;height:40px;color:var(--slate);border-radius:10px;flex:none;place-items:center;transition:all .14s;display:grid}.comp-btn:hover{background:var(--lavender);color:var(--ink)}.comp-btn svg{stroke:currentColor;fill:none;stroke-width:1.85px;stroke-linecap:round;stroke-linejoin:round;width:20px;height:20px}.class-sel{background:var(--sand);border:1px solid var(--line);border-radius:999px;align-items:center;gap:6px;max-width:190px;min-height:38px;padding:6px 12px;font-size:13px;font-weight:600;transition:all .15s;display:flex}.class-sel:hover{border-color:var(--violet);color:var(--violet-700)}.class-sel b{text-overflow:ellipsis;white-space:nowrap;font-weight:600;overflow:hidden}.class-sel 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