*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:var(--font-body),"Noto Sans Bengali",Arial,sans-serif;color:#173650;background:#fff;line-height:1.6}h1,h2,h3,h4,h5,.nav-link,.lc-drawer-link,.lc-drawer-section>summary,.lc-drawer-group>summary{font-family:var(--font-heading),"Noto Sans Bengali",Arial,sans-serif}a{text-decoration:none;color:inherit}button,input,select{font:inherit}.container{width:min(1180px,92%);margin:auto}header{position:sticky;top:0;z-index:100;background:#fff;box-shadow:0 3px 14px #17365012}.navwrap{width:min(1220px,94%);margin:auto;display:flex;align-items:center;gap:14px;min-height:66px}.brandlink{flex:0 0 auto}.logo{width:var(--logo);height:auto;display:block}
/* Right-side icon cluster: WhatsApp (live link) + Login/Cart (icon-only, coming soon) */
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/* Full-screen search popup (mobile only) */
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.lc-drawer-signin{display:block;width:calc(100% - 28px);margin:16px 14px 20px;background:var(--primary);color:#fff;border:0;padding:14px;font-size:14px;font-weight:800;cursor:pointer;text-align:center}.lc-drawer-signin span{margin-left:6px}
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#dfe5eb;background:#f8fafc}.outline-row+ .outline-row{border-top:0}.outline-row summary{cursor:pointer;padding:20px 24px;font-size:18px;font-weight:800;color:#2e3344;list-style-position:inside}.outline-row>div{padding:0 50px 20px}.outline-row ul{margin:0;color:var(--muted)}.side-info{display:flex;flex-direction:column;gap:18px}.tip-feed{padding-top:20px}.tips-group{margin-bottom:42px}.tips-group h2{font-size:30px;color:var(--primary)}.tips-subcard{border:1px solid #e2e8ee;border-radius:0;padding:22px;background:linear-gradient(180deg,#fff,#fbfcfe);box-shadow:0 10px 28px #1736500b}.tips-subcard span{font-size:20px;font-weight:800;color:var(--primary)}.tip-post{position:relative;display:grid;grid-template-columns:48px 250px minmax(0,1fr);gap:18px;border:1px solid #e1e8ee;border-radius:0;padding:18px;margin-bottom:20px;background:#fff;box-shadow:0 10px 28px #1736500b}.tip-serial{font-size:20px;font-weight:900;color:var(--accent);padding-top:8px;text-align:center}.tip-thumb{width:250px;aspect-ratio:16/9;overflow:hidden;border-radius:0;background:#eef3f7}.tip-thumb img{width:100%;height:100%;object-fit:cover}.tip-date{font-size:11px;color:#80909e}.tip-content h2{font-size:24px;color:var(--primary);margin:4px 0 8px}.tip-content p,.tip-content li{color:var(--muted)}.tip-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.tip-actions button,.tip-actions a{border:1px solid #d7e0e7;background:#fff;border-radius:0;padding:8px 11px;font-size:12px;cursor:pointer;color:var(--primary)}.tip-detail{padding:45px 0}.tip-detail-card{max-width:900px;margin:auto;border:1px solid #e2e8ee;border-radius:0;padding:24px;background:#fff}.tip-detail-card 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0;font-size:13px}.footer-grid p{color:#cbd8e4;font-size:13px}.footer-bottom{background:var(--primary);color:#cbd8e4;text-align:center;padding:15px}.lc-header-signin{margin-left:14px;flex:0 0 auto;white-space:nowrap;font-size:13px;padding:10px 16px}.floatstack{position:fixed;right:18px;bottom:130px;display:flex;flex-direction:column;align-items:center;gap:12px;z-index:200}.fcbtn{width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;box-shadow:0 10px 26px #0004;border:2px solid #fff8;cursor:pointer}.fcbtn svg{width:28px;height:28px;display:block}.fc-phone{background:#34a853}.fc-wa{background:#25d366}.fc-msg{background:#0084ff}.fc-fb{background:#1877f2}.fc-tg{background:#2aa8e0}.fc-close{background:var(--primary);touch-action:none;cursor:pointer}.fc-close svg{width:26px;height:26px}.fcdismiss{width:28px;height:28px;border:0;border-radius:50%;background:#fff;color:#c0392b;box-shadow:0 4px 10px 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#f3f5f8}.lc-drawer-section>summary,.lc-drawer-group>summary{list-style:none;cursor:pointer;padding:13px 14px;font-size:14px;font-weight:800;display:flex;justify-content:space-between;align-items:center;color:#173650}.lc-drawer-section.active>summary{background:var(--primary);color:#fff}.lc-drawer-section.active>summary em{color:#cbd8e4}.lc-drawer-group>summary{font-size:13px;font-weight:700;padding:11px 14px}.lc-drawer-section>summary::-webkit-details-marker,.lc-drawer-group>summary::-webkit-details-marker{display:none}.lc-drawer-panel{padding-left:8px}.lc-drawer-group{border-top:1px solid #f6f8fa}.lc-drawer-sub{display:block;padding:10px 14px 10px 22px;font-size:12.5px;color:#586a7b;border-top:1px solid #f8fafb}.lc-drawer-sub em,.lc-drawer-group em,.lc-drawer-section em{font-style:normal;color:#9aa8b5;font-weight:600;margin-left:2px}@media(max-width:1000px){.service-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.course-top{grid-template-columns:1fr 340px}.tip-post{grid-template-columns:40px 210px 1fr}.tip-thumb{width:210px}}@media(max-width:760px){.navwrap{min-height:64px;gap:6px}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.learn-topics{padding:28px 0 4px}.logo{width:var(--logom)}.hamburger{width:38px;height:38px}.hamburger svg{width:22px;height:22px}.header-search{flex:1;min-width:0}.header-search .searchbox input{padding:8px 10px;font-size:13px}.header-search .search-btn{width:36px;flex:0 0 36px}.banner-main{grid-template-columns:1fr}.banner-slider{aspect-ratio:16/9}.video-box{aspect-ratio:2/1}.hero{padding:16px 0 22px;box-shadow:0 10px 24px #17365012}.hero h1{font-size:var(--herom)}.hero p{font-size:var(--subm)}.page-hero,.tips-hero{padding:14px 0}.coursehero{padding:14px 0}.section h2{font-size:var(--sectionm)}.service-grid{grid-template-columns:1fr;gap:14px}.service-card{border-radius:0}.service-thumb{min-height:80px}.service-card h3{font-size:var(--cardm)}.service-card p{font-size:12px}.header-search{display:none}.search-toggle{display:grid;width:36px;height:36px}.search-toggle svg{width:20px;height:20px}.nav-actions{margin-left:auto;gap:4px}.icon{width:36px;height:36px}.icon svg{width:20px;height:20px}.lc-header-signin{display:none}.lc-search-overlay-card{width:94vw;margin-top:5vh;max-height:88vh}.mobile-menu{width:min(300px,88vw)}.floatstack{right:12px;top:auto;bottom:24px;transform:none}.fcbtn{width:52px;height:52px}.fcbtn svg{width:24px;height:24px}.buy-actions{grid-template-columns:1fr 1fr}.course-top,.course-layout{grid-template-columns:1fr}.buybox{position:static}.course-title h1{font-size:var(--courseTitleM)}.tip-post{grid-template-columns:30px 1fr;gap:12px}.tip-thumb{grid-column:2;width:100%;order:0}.tip-content{grid-column:2}.tip-content h2{font-size:21px}.sub-grid,.tips-subgrid,.pay-grid{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;padding:38px 6% 24px}.tip-detail-card h1{font-size:32px}.includes li{font-size:16px}.outline-row summary{font-size:16px;padding:17px}.outline-row>div{padding:0 35px 18px}}