.lsbd-subject,.lsbd-subject *{box-sizing:border-box}.lsbd-subject{--g:#087443;--d:#12382a;--m:#6e7b75;--b:#dfe9e4;font-family:"Hind Siliguri","Noto Sans Bengali",sans-serif;color:#30413a;line-height:1.8}.lsbd-subject-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:24px;align-items:start}.lsbd-sidebar{position:sticky;top:24px;border:1px solid var(--b);border-radius:12px;background:#f8fbf9;overflow:hidden}.lsbd-sidebar-title{padding:17px 16px;background:#edf7f1;border-bottom:1px solid var(--b)}.lsbd-sidebar-label{display:block;font-size:11px;color:var(--g);font-weight:700;text-transform:uppercase;letter-spacing:.5px}.lsbd-sidebar-title strong{display:block;margin-top:3px;color:var(--d);font-size:17px}.lsbd-class-nav{max-height:560px;overflow-y:auto;padding:9px}.lsbd-class-nav::-webkit-scrollbar{width:7px}.lsbd-class-nav::-webkit-scrollbar-track{background:#edf2ef}.lsbd-class-nav::-webkit-scrollbar-thumb{background:#b8cfc2;border-radius:10px}.lsbd-class-link{display:block;padding:11px 12px;margin-bottom:6px;border:1px solid transparent;border-radius:8px;background:#fff;color:#42534b;text-decoration:none}.lsbd-class-link:hover{color:var(--g);border-color:#cfe2d7}.lsbd-class-link.is-active{background:#e7f4ec;border-color:#c7dfd1;color:var(--g)}.lsbd-class-number{display:block;font-size:13px;font-weight:700}.lsbd-class-title-link{display:block;margin-top:2px;font-size:11px;color:#7a8781;line-height:1.45}.lsbd-main-content{min-width:0}.lsbd-class-content{display:none;padding:0;border:1px solid var(--b);border-radius:12px;background:#fff;box-shadow:0 5px 18px rgba(20,60,42,.04);overflow:hidden}.lsbd-class-content.is-current{display:block}.lsbd-content-scroll{max-height:min(68vh,660px);overflow-y:auto;padding:28px 30px;outline:none;scroll-behavior:smooth}.lsbd-content-scroll::-webkit-scrollbar{width:9px}.lsbd-content-scroll::-webkit-scrollbar-track{background:#f0f4f2;border-radius:10px}.lsbd-content-scroll::-webkit-scrollbar-thumb{background:#b9cec2;border-radius:10px}.lsbd-content-scroll{scrollbar-width:auto;scrollbar-color:#b9cec2 #f0f4f2}.lsbd-content-meta{margin-bottom:7px;color:var(--g);font-size:12px;font-weight:700}.lsbd-class-content h2{margin:0 0 17px;color:var(--d);font-size:29px;line-height:1.4}.lsbd-content-body{color:#4b5d55;font-size:15px}.lsbd-content-body p{margin:0 0 1em}.lsbd-content-body p:last-child{margin-bottom:0}.lsbd-content-body h1,.lsbd-content-body h2,.lsbd-content-body h3,.lsbd-content-body h4,.lsbd-content-body h5,.lsbd-content-body h6{margin:1.1em 0 .55em;color:#12382a;line-height:1.45}.lsbd-content-body ul,.lsbd-content-body ol{margin:0 0 1em;padding-left:1.35em}.lsbd-content-body li{margin:.2em 0}.lsbd-content-body blockquote{margin:1em 0;padding:10px 15px;border-left:3px solid #087443;background:#f6faf8}.lsbd-content-body pre{white-space:pre-wrap;overflow-wrap:anywhere}.lsbd-content-body img{max-width:100%;height:auto}.lsbd-empty{padding:20px;border:1px solid var(--b);border-radius:10px;background:#f7faf8;color:#6b7972}.lsbd-pagination{display:flex;align-items:center;justify-content:center;gap:4px;margin:18px auto 0;max-width:100%;padding:0 4px;white-space:nowrap;overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;scrollbar-width:none}.lsbd-pagination::-webkit-scrollbar{display:none}.lsbd-page-nav,.lsbd-page-number{appearance:none;border:0;background:transparent!important;box-shadow:none!important;color:#44544d!important;font:inherit;font-size:17px;line-height:1.2;padding:4px 6px!important;margin:0!important;min-width:0!important;height:auto!important;border-radius:0!important;cursor:pointer;flex:0 0 auto}.lsbd-page-nav:hover,.lsbd-page-number:hover{color:var(--g)!important;background:transparent!important}.lsbd-page-number.is-active{color:var(--g)!important;font-weight:600;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}.lsbd-page-nav:disabled{opacity:.45;cursor:default}.lsbd-keyboard-hint{display:flex;justify-content:center;align-items:center;gap:10px;margin-top:7px;color:#9aa59f;font-size:11px}.lsbd-keyboard-hint span+span:before{content:"•";margin-right:10px;color:#c1cbc5}@media(max-width:900px){.lsbd-subject-layout{grid-template-columns:230px minmax(0,1fr)}.lsbd-content-scroll{max-height:min(64vh,620px)}}@media(max-width:700px){.lsbd-subject-layout{grid-template-columns:1fr}.lsbd-sidebar{position:relative;top:auto}.lsbd-class-nav{max-height:260px}.lsbd-content-scroll{max-height:65vh;padding:22px 18px}.lsbd-class-content h2{font-size:23px}.lsbd-content-body{font-size:14px}.lsbd-pagination{justify-content:flex-start;gap:1px}.lsbd-page-nav,.lsbd-page-number{font-size:16px;padding-left:5px!important;padding-right:5px!important}.lsbd-keyboard-hint{font-size:10px;gap:7px}.lsbd-keyboard-hint span+span:before{margin-right:7px}}
.lsbd-class-views{display:inline-block;margin-left:7px;color:#8a9791;font-size:10px;font-weight:500;white-space:nowrap}
.lsbd-class-link.is-active .lsbd-class-views{color:var(--g)}