:root{--green:#064f45;--green2:#0a8d73;--red:#0b8b72;--gold:#c9a24e;--ink:#102a2f;--muted:#64777d;--mint:#e9f8f3;--dark:#07111b;--white:#fff;--shadow:0 22px 70px rgba(0,0,0,.18)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Noto Sans Bengali",Inter,system-ui,sans-serif;color:var(--ink);background:#f6faf8}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}.container-wide{width:min(1380px,94vw);margin:auto}.site-header{position:absolute;top:0;left:0;right:0;z-index:50;color:#fff}.white-head{height:70px;background:rgba(255,255,255,.10);display:grid;grid-template-columns:310px 1fr auto;gap:28px;align-items:center;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.16)}.brand{display:flex;align-items:center;gap:12px}.logo{width:48px;height:48px;border-radius:14px;background:linear-gradient(145deg,rgba(12,151,121,.95),rgba(5,82,70,.95));display:grid;place-items:center;color:#fff;font-weight:1000;box-shadow:0 10px 22px rgba(0,40,32,.28);border:1px solid rgba(255,255,255,.22)}.brand strong{display:block;font-size:18px;font-weight:1000;color:#fff;text-shadow:0 2px 14px rgba(0,0,0,.35)}.brand small{display:block;color:rgba(255,255,255,.82);font-size:12px;font-weight:700;text-shadow:0 2px 12px rgba(0,0,0,.3)}.top-search{height:48px;display:grid;grid-template-columns:104px 1fr 104px;border:1px solid rgba(255,255,255,.30);border-radius:999px;overflow:hidden;background:rgba(255,255,255,.88);box-shadow:0 12px 30px rgba(0,30,24,.18);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.top-search select,.top-search input{border:0;outline:0;padding:0 16px;background:#fff}.top-search select{border-right:1px solid #e1efea;font-weight:900}.top-search button{border:0;background:linear-gradient(135deg,#087660,#0fb28a);color:#fff;font-weight:1000;box-shadow:inset 0 0 0 1px rgba(255,255,255,.18)}.lang{border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.16);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-radius:999px;padding:5px;display:flex;gap:5px;font-weight:1000;color:#fff}.lang span{background:#0db878;color:#fff;border-radius:999px;padding:8px 10px}.lang b{padding:8px 7px;color:rgba(255,255,255,.78)}.green-nav{background:rgba(4,77,65,.68);color:#fff;box-shadow:0 18px 48px rgba(0,30,24,.24);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.13)}.nav-row{height:44px;display:flex;align-items:center;gap:4px;overflow-x:auto}.nav-row a{padding:10px 14px;border-radius:10px;font-weight:900;white-space:nowrap;color:rgba(255,255,255,.96);text-shadow:0 1px 10px rgba(0,0,0,.32)}.nav-row a:hover{background:rgba(255,255,255,.12)}.nav-spacer{flex:1}.cart,.login,.subscribe{height:34px;border:0;border-radius:999px;padding:0 18px;font-weight:1000}.cart,.login{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.18)}.subscribe{background:linear-gradient(135deg,#c9a24e,#f1d27a);color:#14322e;box-shadow:0 12px 26px rgba(0,0,0,.20)}.hero-video-section{position:relative;min-height:800px;overflow:hidden;background:#050b12;color:#fff}.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:1;filter:saturate(1.15) contrast(1.08) brightness(.95)}.video-tint{position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,10,18,.80) 0%,rgba(4,10,18,.64) 42%,rgba(4,10,18,.38) 100%),radial-gradient(circle at 18% 18%,rgba(0,190,135,.28),transparent 28%),linear-gradient(0deg,rgba(4,10,18,.35),rgba(4,10,18,.1))}.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 410px;gap:60px;align-items:center;padding:158px 0 42px}.live-pill{display:inline-flex;align-items:center;gap:9px;background:rgba(0,185,130,.17);border:1px solid rgba(51,255,194,.28);color:#35ffc3;padding:10px 17px;border-radius:999px;font-weight:1000}.live-pill i{width:9px;height:9px;border-radius:50%;background:#27ffc1;box-shadow:0 0 0 8px rgba(39,255,193,.12);animation:pulse 1.4s infinite}@keyframes pulse{50%{transform:scale(1.3)}}.hero-left h1{font-size:clamp(54px,6.2vw,98px);line-height:1.02;margin:28px 0 24px;letter-spacing:-.035em}.hero-left h1 span{color:#31f0c2;text-shadow:0 14px 42px rgba(49,240,194,.22)}.hero-left h1 em{font-style:normal;color:#fff}.hero-left p{max-width:780px;font-size:20px;line-height:1.9;color:#e7eff0;text-shadow:0 2px 20px rgba(0,0,0,.35)}.hero-search{max-width:750px;display:grid;grid-template-columns:1fr 128px;gap:10px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(14px);padding:12px;border-radius:18px;box-shadow:0 24px 70px rgba(0,0,0,.3);margin:34px 0 22px}.hero-search input{height:56px;border:0;border-radius:12px;background:#102438;color:#fff;outline:0;padding:0 22px}.hero-search input::placeholder{color:#bdd0d4}.hero-search button{border:0;border-radius:12px;background:#00a778;color:#fff;font-weight:1000}.hero-actions{display:flex;gap:15px;flex-wrap:wrap}.primary,.outline{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:999px;font-weight:1000;border:0;cursor:pointer}.primary{background:#00a778;color:#fff;box-shadow:0 14px 30px rgba(0,167,120,.25)}.outline{background:#fff;color:#08473d}.book-strip{margin-top:28px;display:grid;grid-template-columns:220px repeat(3,1fr);gap:14px;max-width:980px}.strip-title,.mini-book{background:rgba(255,255,255,.95);color:#123137;border-radius:18px;padding:14px;box-shadow:0 18px 40px rgba(0,0,0,.17)}.strip-title b{display:block;font-size:18px}.strip-title small,.mini-book small{color:#6b7e82}.mini-book{display:grid;grid-template-columns:58px 1fr;gap:12px;align-items:center}.cover{height:72px;border-radius:10px;display:grid;place-items:center;color:#fff;font-weight:1000;text-align:center;font-size:12px}.blue{background:linear-gradient(145deg,#092744,#175c91)}.green{background:linear-gradient(145deg,#097149,#54b052)}.gold{background:linear-gradient(145deg,#76500c,#c98a20)}.calculator-card{background:rgba(14,23,37,.86);border:1px solid rgba(255,255,255,.16);backdrop-filter:blur(18px);border-radius:30px;padding:30px;box-shadow:0 30px 80px rgba(0,0,0,.35)}.calculator-card h2{margin:0 0 6px;font-size:27px}.calculator-card p{margin:0 0 20px;color:#cddadd}.tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;background:#111b2f;border-radius:14px;padding:7px}.tabs button{height:44px;border:0;border-radius:10px;background:transparent;color:#cbd6d8;font-weight:900}.tabs .active{background:#00a778;color:#fff}.calculator-card label{display:block;margin:18px 0 8px;color:#d5e0e3;font-weight:900}.calculator-card input{width:100%;height:54px;border-radius:13px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.1);color:#fff;padding:0 14px;outline:0}.calc-submit{width:100%;height:54px;border:0;border-radius:14px;background:#00a778;color:#fff;font-weight:1000;margin-top:22px}.calc-result{margin-top:18px;color:#35ffc3;font-weight:1000;font-size:24px}.section{padding:86px 0}.white{background:#fff}.mint{background:var(--mint)}.dark{background:#06131c;color:#fff}.section-title{max-width:820px;margin-bottom:32px}.section-title span{letter-spacing:.18em;color:#008d66;font-weight:1000}.section-title h2{font-size:clamp(36px,4.4vw,62px);line-height:1.08;margin:12px 0;color:#0c3338}.light h2{color:#fff}.section-title p{font-size:18px;line-height:1.8;color:#687b80}.shop-tools{display:flex;gap:14px;margin-bottom:24px}.shop-tools input,.shop-tools select{height:52px;border:1px solid #dceae6;border-radius:14px;padding:0 16px;outline:0}.shop-tools input{flex:1}.book-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.book-card{background:#fff;border:1px solid #e0ebe8;border-radius:24px;overflow:hidden;box-shadow:0 18px 45px rgba(0,85,66,.1);display:flex;flex-direction:column}.book-cover{height:250px;margin:18px;border-radius:18px;padding:25px;color:#fff;display:flex;flex-direction:column;justify-content:space-between;box-shadow:inset -26px 0 rgba(255,255,255,.08),0 18px 28px rgba(0,0,0,.17);position:relative}.book-cover:before{content:"";position:absolute;left:15px;top:20px;bottom:20px;width:4px;background:var(--gold)}.book-cover strong{font-size:28px;line-height:1.15}.book-cover small{letter-spacing:.14em;text-transform:uppercase}.book-info{padding:0 20px 22px}.book-info h3{font-size:20px;margin:0 0 8px}.meta{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.meta span{background:#eaf7f2;color:#03614b;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:900}.price-row{display:flex;align-items:center;justify-content:space-between;margin-top:16px}.price{font-size:25px;font-weight:1000;color:#005b42}.order{border:0;border-radius:13px;background:#005b42;color:#fff;padding:12px 16px;font-weight:1000}.split,.contact-grid{display:grid;grid-template-columns:1fr 460px;gap:52px;align-items:center}.resource-grid,.card-grid,.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.resource-card,.card-grid article,.timeline div,.notice-box,.form-card{background:#fff;border:1px solid #e0ebe8;border-radius:24px;padding:26px;box-shadow:0 18px 45px rgba(0,85,66,.08)}.resource-card b,.card-grid b,.timeline b{font-size:22px}.resource-card p,.card-grid p,.timeline p,.notice-box p{color:#64787d;line-height:1.7}.dark .timeline div{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.15)}.dark .timeline p{color:#d0dde0}.form-card input,.form-card select,.form-card textarea{width:100%;border:1px solid #dceae6;border-radius:14px;padding:14px;margin-bottom:12px;outline:0}.form-card textarea{height:110px}.full{width:100%}footer{background:#041018;color:#d9e7e6;padding:58px 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}.footer-grid a,.footer-grid button{display:block;background:none;border:0;color:#d9e7e6;text-align:left;padding:7px 0}.modal{position:fixed;inset:0;background:rgba(2,10,14,.72);display:none;place-items:center;z-index:100;padding:18px}.modal.show{display:grid}.modal-box{width:min(480px,94vw);background:#fff;border-radius:24px;padding:28px;position:relative;box-shadow:0 30px 90px rgba(0,0,0,.35)}.modal-box.wide{width:min(780px,94vw)}.close{position:absolute;right:16px;top:16px;border:0;border-radius:50%;width:34px;height:34px;background:#eef6f3;font-size:22px}.modal-box input{width:100%;height:48px;border:1px solid #dceae6;border-radius:12px;margin:7px 0;padding:0 14px}.cart-item{display:grid;grid-template-columns:1fr auto;gap:12px;border-bottom:1px solid #e9f1ee;padding:12px 0}@media(max-width:1160px){.white-head{grid-template-columns:1fr auto}.top-search{grid-column:1/-1}.hero-inner,.split,.contact-grid{grid-template-columns:1fr}.calculator-card{max-width:540px}.book-strip{grid-template-columns:1fr}.book-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:760px){.white-head{height:auto;padding:12px 0}.brand small{display:none}.top-search{grid-template-columns:78px 1fr 78px}.green-nav{display:none}.hero-video-section{min-height:auto}.hero-inner{padding:62px 0 32px}.hero-left h1{font-size:44px}.hero-left p{font-size:16px}.hero-search{grid-template-columns:1fr}.hero-search button{height:48px}.book-grid,.resource-grid,.card-grid,.timeline,.footer-grid{grid-template-columns:1fr}.shop-tools{display:grid}.section{padding:60px 0}.book-strip{display:none}}

/* === Cover-page compact premium refinement v2 === */
:root{--hero-head-max:72px;}
.white-head{height:64px;grid-template-columns:300px 1fr auto;gap:22px;}
.logo{width:42px;height:42px;border-radius:12px;font-size:14px}
.brand strong{font-size:17px}.brand small{font-size:11px;line-height:1.2}
.top-search{height:44px}.top-search button{font-size:15px}.top-search select,.top-search input{font-size:14px}
.green-nav{box-shadow:0 8px 24px rgba(0,55,39,.20)}.nav-row{height:44px}.nav-row a{padding:11px 13px;font-size:14px}.cart,.login,.subscribe{height:34px;padding:0 14px;font-size:13px}
.hero-video-section{min-height:calc(100vh - 108px);height:auto;}
.hero-inner{min-height:calc(100vh - 108px);grid-template-columns:minmax(0,1.08fr) 370px;gap:46px;align-items:center;padding:34px 0 24px;}
.live-pill{padding:7px 13px;font-size:12px;letter-spacing:.02em}.live-pill i{width:7px;height:7px;box-shadow:0 0 0 6px rgba(39,255,193,.12)}
.hero-left h1{font-size:clamp(42px,4.75vw,72px);line-height:1.03;margin:16px 0 14px;letter-spacing:-.045em;max-width:780px;}
.hero-left p{max-width:720px;font-size:16px;line-height:1.65;margin:0;color:#eef6f6;}
.hero-search{max-width:700px;grid-template-columns:1fr 108px;gap:8px;padding:8px;border-radius:15px;margin:22px 0 16px;}
.hero-search input{height:42px;border-radius:11px;font-size:14px}.hero-search button{border-radius:11px;font-size:15px}.primary,.outline{min-height:42px;padding:0 20px;font-size:14px}.hero-actions{gap:11px}
.book-strip{margin-top:16px;grid-template-columns:190px repeat(3,1fr);gap:10px;max-width:900px;}
.strip-title,.mini-book{border-radius:15px;padding:11px}.strip-title b{font-size:15px}.strip-title small,.mini-book small{font-size:11px}.mini-book{grid-template-columns:48px 1fr;gap:10px}.mini-book b{font-size:13px;line-height:1.2}.cover{height:56px;border-radius:9px;font-size:10px}
.calculator-card{border-radius:24px;padding:22px;max-width:370px;margin-left:auto}.calculator-card h2{font-size:22px}.calculator-card p{font-size:13px;margin-bottom:14px}.tabs{gap:6px;padding:6px}.tabs button{height:37px;font-size:13px}.calculator-card label{margin:12px 0 6px;font-size:13px}.calculator-card input{height:44px;border-radius:11px}.calc-submit{height:46px;margin-top:16px;border-radius:12px}.calc-result{font-size:20px;margin-top:12px}.video-tint{background:linear-gradient(90deg,rgba(4,10,18,.74) 0%,rgba(4,10,18,.55) 43%,rgba(4,10,18,.35) 100%),radial-gradient(circle at 18% 18%,rgba(0,190,135,.22),transparent 26%),linear-gradient(0deg,rgba(4,10,18,.26),rgba(4,10,18,.06));}

/* More refined below-the-fold sections */
.section{padding:70px 0}.section-title h2{font-size:clamp(30px,3.4vw,50px)}.section-title p{font-size:16px}.book-grid{gap:18px}.book-cover{height:218px}.book-cover strong{font-size:24px}

@media(max-width:1360px){.hero-inner{grid-template-columns:minmax(0,1fr) 350px;gap:34px}.hero-left h1{font-size:clamp(40px,4.4vw,64px)}.book-strip{grid-template-columns:175px repeat(3,1fr)}.calculator-card{max-width:350px}}
@media(max-width:1160px){.hero-inner{grid-template-columns:1fr}.calculator-card{margin:0;max-width:520px}.hero-video-section,.hero-inner{min-height:auto}.hero-inner{padding:54px 0 34px}}
@media(max-width:760px){.white-head{height:auto;grid-template-columns:1fr auto}.hero-left h1{font-size:38px}.hero-left p{font-size:15px}.book-strip{display:grid;grid-template-columns:1fr}.calculator-card{max-width:none}.hero-search{grid-template-columns:1fr}.hero-search button{height:42px}}


/* Corporate glass header refinement */
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,transparent,rgba(201,162,78,.55),transparent);pointer-events:none}
.top-search select,.top-search input{color:#153a38}.top-search input::placeholder{color:#7b8c8f}.green-nav .subscribe:hover,.top-search button:hover{filter:brightness(1.06)}
.hero-video-section{padding-top:0}.hero-bg{filter:saturate(1.08) contrast(1.05) brightness(.92)}
.video-tint{background:linear-gradient(90deg,rgba(3,10,16,.78) 0%,rgba(3,10,16,.54) 44%,rgba(3,10,16,.30) 100%),radial-gradient(circle at 18% 22%,rgba(0,190,135,.18),transparent 25%),linear-gradient(180deg,rgba(2,12,16,.25),rgba(2,10,14,.38))}
@media(max-width:1160px){.site-header{position:sticky;background:rgba(4,77,65,.92)}.white-head{background:rgba(4,77,65,.88)}.hero-inner{padding-top:72px}}
@media(max-width:760px){.site-header{position:sticky}.white-head{background:rgba(4,77,65,.92)}.green-nav{background:rgba(4,77,65,.94)}.hero-inner{padding-top:44px}.top-search button{background:linear-gradient(135deg,#087660,#0fb28a)}.subscribe{background:linear-gradient(135deg,#c9a24e,#f1d27a);color:#14322e}}