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.cp{--cp-bg:#F5F6F8;--cp-ink:#1B1D22;--cp-ink2:#535865;--cp-ink3:#7C818D;--cp-line:#E3E5EA;--cp-line2:#CFD3DA;--cp-red:#D0021B;--cp-redink:#AA0000;--cp-red50:#FEF3F2;--cp-green:#15803D;--cp-green50:#EDF8F1;--cp-amber:#B45309;--cp-amber50:#FFF8EB;--cp-amberline:#F3DFB8;background:var(--cp-bg);color:var(--cp-ink)}.lrn .cp-bn,.lrn .cp [lang=bn]{font-family:Noto Sans Bengali,Hind Siliguri,Kohinoor Bangla,Nirmala UI,system-ui,sans-serif;line-height:1.85}.lrn .cp-wrap{max-width:1280px;margin:0 auto;padding:18px 32px 96px}.lrn .cp-crumb ol{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--cp-ink2)}.lrn .cp-crumb li+li:before{content:"/";margin-right:8px;color:var(--cp-ink3)}.lrn .cp-crumb button{border:0;background:none;padding:0;font:inherit;color:var(--cp-ink2);cursor:pointer;border-radius:4px}.lrn .cp-crumb button:hover{color:var(--cp-ink);text-decoration:underline}.lrn .cp-crumb [aria-current]{color:var(--cp-ink);font-weight:600}.lrn 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.cp-mod-main{display:flex;flex-direction:column;gap:2px;min-width:0}.lrn .cp-mod-t{font-size:16px;font-weight:700;line-height:1.4}.lrn .cp-mod-sub{font-size:13px;color:var(--cp-ink2)}.lrn .cp-st{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--cp-ink2);white-space:nowrap}.lrn .cp-st.done{color:#166534}.lrn .cp-st.part{color:var(--cp-redink)}.lrn .cp-okdot{width:20px;height:20px;border-radius:50%;background:var(--cp-green);color:#fff;display:grid;place-items:center}.lrn .cp-chev{color:var(--cp-ink3);transition:transform .18s ease;justify-self:end}.lrn .cp-mod.open .cp-chev,.lrn .cp-faq.open .cp-chev{transform:rotate(180deg)}.lrn .cp-lessons{list-style:none;padding:0 20px 16px 70px;display:flex;flex-direction:column;gap:2px}.lrn .cp-les{width:100%;display:grid;grid-template-columns:28px minmax(0,1fr) auto auto auto;gap:12px;align-items:center;min-height:48px;padding:6px 12px;border:1px solid transparent;border-radius:10px;background:none;text-align:left;cursor:pointer}.lrn .cp-les:hover{background:#f2f3f6}.lrn .cp-play{width:28px;height:28px;border-radius:50%;border:1px solid var(--cp-line2);display:grid;place-items:center;background:#fff}.lrn .cp-les-t{font-size:15px;font-weight:600;line-height:1.4}.lrn .cp-les-p{font-size:12px;color:var(--cp-ink3)}.lrn .cp-les-d{font-size:13px;color:var(--cp-ink2);font-variant-numeric:tabular-nums;min-width:40px;text-align:right}.lrn .cp-ls{display:inline-flex;align-items:center;gap:5px;font-size:13px;min-width:84px;justify-content:flex-end}.lrn .cp-ls.done{color:#166534}.lrn .cp-sheet{background:#fff;border:1px solid var(--cp-line);border-radius:14px;padding:26px 28px}.lrn .cp-sec+.cp-sec{border-top:1px solid var(--cp-line);padding-top:26px;margin-top:26px}.lrn .cp-checks{list-style:none;padding:0;margin-top:16px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 32px}.lrn .cp-checks li{display:flex;gap:10px;font-size:15px;line-height:1.55}.lrn .cp-checks svg{flex:none;margin-top:3px;color:var(--cp-green)}.lrn .cp-prose{max-width:72ch}.lrn .cp-prose p{margin-top:12px;line-height:1.75;font-size:15.5px}.lrn .cp-aud{list-style:none;padding:0;margin-top:14px;display:flex;flex-direction:column;gap:10px}.lrn .cp-aud li{display:flex;gap:10px;font-size:15px;line-height:1.55}.lrn .cp-aud li:before{content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--cp-ink3);margin-top:9px}.lrn .cp-faqs{background:#fff;border:1px solid var(--cp-line);border-radius:14px;overflow:hidden}.lrn .cp-faq+.cp-faq{border-top:1px solid var(--cp-line)}.lrn .cp-faq h3{font-size:inherit;font-weight:inherit}.lrn .cp-faq-btn{width:100%;display:flex;justify-content:space-between;gap:16px;align-items:center;min-height:58px;padding:12px 20px;border:0;background:none;text-align:left;font-weight:700;font-size:15px;cursor:pointer;line-height:1.45}.lrn .cp-faq-btn:hover{background:#fafafb}.lrn .cp-faq-a{padding:0 20px 18px;color:var(--cp-ink2);line-height:1.7;font-size:15px;max-width:72ch}.lrn .cp-panel{background:#fff;border:1px solid var(--cp-line);border-radius:16px;padding:14px;box-shadow:0 1px 2px #14161c0a}.lrn .cp-thumb{position:relative;aspect-ratio:370 / 208;border-radius:10px;overflow:hidden}.lrn .cp-thumb-tag{position:absolute;left:14px;top:12px;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;opacity:.85}.lrn .cp-thumb-code{position:absolute;left:14px;bottom:6px;font-size:64px;font-weight:800;letter-spacing:-.04em;line-height:1}.lrn .cp-ps{padding:18px 6px 6px;display:flex;flex-direction:column;gap:16px}.lrn .cp-ps-head{display:flex;gap:12px;align-items:center}.lrn .cp-ok{flex:none;width:38px;height:38px;border-radius:50%;background:var(--cp-green50);color:var(--cp-green);display:grid;place-items:center;border:1px solid #BFE3CC}.lrn .cp-eyebrow{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--cp-ink3);margin-bottom:3px}.lrn .cp-ps-t{font-size:18px;line-height:1.3;font-weight:800}.lrn .cp-pr-row{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;color:var(--cp-ink2);margin-bottom:8px;gap:12px}.lrn .cp-pr-row b{color:var(--cp-ink);font-size:15px}.lrn progress.cp-pbar{-webkit-appearance:none;appearance:none;width:100%;height:8px;border:0;border-radius:999px;background:#eceef1;overflow:hidden;display:block;color:var(--cp-red)}.lrn progress.cp-pbar::-webkit-progress-bar{background:#eceef1;border-radius:999px}.lrn progress.cp-pbar::-webkit-progress-value{background:var(--cp-red);border-radius:999px;transition:width .2s}.lrn progress.cp-pbar::-moz-progress-bar{background:var(--cp-red);border-radius:999px}.lrn progress.cp-pbar.done::-webkit-progress-value{background:var(--cp-green)}.lrn progress.cp-pbar.done::-moz-progress-bar{background:var(--cp-green)}.lrn .cp-xp{display:flex;gap:12px;align-items:flex-start;padding:12px;border-radius:12px;background:var(--cp-amber50);border:1px solid var(--cp-amberline)}.lrn .cp-xp-ic{flex:none;width:32px;height:32px;border-radius:8px;background:#fff;color:var(--cp-amber);display:grid;place-items:center;border:1px solid var(--cp-amberline)}.lrn .cp-xp-main{font-weight:800;color:#8a4b06;font-size:15px}.lrn .cp-xp-sub{margin-top:2px;font-size:13px;color:#704008;line-height:1.45}.lrn .cp-ps-actions{display:flex;flex-direction:column;gap:8px}.lrn .cp-caption{font-size:13px;color:var(--cp-ink2);text-align:center;line-height:1.5}.lrn .cp-board{background:#fff;border:1px solid var(--cp-line);border-radius:16px;padding:18px 18px 4px}.lrn .cp-board-h{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;color:var(--cp-amber)}.lrn .cp-board-h .cp-muted{font-size:13px}.lrn .cp-lb{list-style:none;padding:0;margin-top:10px;display:flex;flex-direction:column;gap:2px}.lrn .cp-lb-r{display:grid;grid-template-columns:20px 32px minmax(0,1fr) auto;gap:10px;align-items:center;padding:10px 8px;border-radius:10px}.lrn .cp-rk{font-weight:800;color:var(--cp-ink3);font-size:14px;text-align:center}.lrn .cp-av{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:12px}.lrn .cp-nm{display:flex;flex-direction:column;min-width:0}.lrn .cp-nm b{font-size:14px}.lrn .cp-nm small{font-size:12.5px;color:var(--cp-ink2)}.lrn .cp-lb-xp{font-weight:700;font-size:14px;font-variant-numeric:tabular-nums}.lrn .cp-empty{margin-top:10px;font-size:14px;line-height:1.6;color:var(--cp-ink2)}.lrn .cp-more{display:flex;align-items:center;gap:6px;width:100%;min-height:46px;margin-top:8px;border:0;border-top:1px solid var(--cp-line);background:none;color:var(--cp-redink);font-weight:700;font-size:14px;cursor:pointer}.lrn .cp-more:hover{color:var(--cp-red)}@media(max-width:1180px){.lrn .cp-layout{column-gap:32px;grid-template-columns:minmax(0,1fr) 316px}}@media(max-width:1040px){.lrn .cp-layout{grid-template-columns:minmax(0,1fr);grid-template-areas:"intro" "aside" "body"}.lrn .cp-aside{position:static}}@media(max-width:640px){.lrn .cp-wrap{padding:14px 16px 72px}.lrn .cp-intro h1{font-size:26px}.lrn .cp-mod-btn{grid-template-columns:28px minmax(0,1fr) 22px;padding:14px}.lrn .cp-st span:last-child{display:none}.lrn .cp-st{grid-column:3;grid-row:1;display:none}.lrn .cp-lessons{padding:0 10px 12px}.lrn .cp-les{grid-template-columns:28px minmax(0,1fr) auto}.lrn .cp-les-p,.lrn .cp-ls{display:none}.lrn .cp-checks{grid-template-columns:1fr}.lrn .cp-sheet{padding:20px 18px}.lrn .cp-banner{flex-direction:column;align-items:stretch}}