:root{
 --g:#0E9F6E;--g-deep:#006A4E;--g-soft:#E3F4EC;--g-line:#CFE6DB;--red:#E4202E;--red-soft:#FDE7E8;--sun:#FFC93C;--sun-soft:#FFF4D1;
 --ink:#17302A;--ink-2:#4F665E;--ink-3:#7C9189;--bg:#F2F7F4;--surface:#fff;--line:#DCE8E2;--dark:#0B2A20;--dark-2:#12402F;--dark-ink:#B9D6CA;
 --b1:#D64545;--b2:#F08A4B;--b3:#FFC93C;--b4:#9ED77F;--b5:#2FB36F;--b6:#006A4E;
 --fd:'Noto Sans','Noto Sans Bengali',system-ui,sans-serif;--fb:'Noto Sans','Noto Sans Bengali',system-ui,-apple-system,'Segoe UI',sans-serif;
 --r:18px;--sh:0 1px 2px rgba(0,40,28,.06),0 8px 24px rgba(0,40,28,.07)}
html[data-theme="blue"]{--g:#3B5BDB;--g-deep:#1E2F7A;--g-soft:#E8EDFC;--g-line:#D3DCF7;--sun:#FFB020;--sun-soft:#FFF1D6;--ink:#16213E;--ink-2:#4A5570;--ink-3:#7A849C;--bg:#F3F5FB;--line:#DDE2F0;--dark:#111A3A;--dark-2:#1E2F7A;--dark-ink:#C3CCEA}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--fb);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:var(--fd);line-height:1.2;margin:0;text-wrap:balance}
p{margin:0;text-wrap:pretty}li{text-wrap:pretty}a{color:var(--g-deep)}
button{font:inherit;cursor:pointer}
.w{max-width:1160px;margin:0 auto;padding:0 20px}
.sec{padding:84px 0}.sec.alt{background:var(--surface)}
.eyeb{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.02em;color:var(--g-deep);background:var(--g-soft);padding:4px 12px;border-radius:99px;margin-bottom:14px}
.h2{font-size:clamp(28px,4vw,42px);font-weight:800}
.lede{font-size:18px;color:var(--ink-2);margin-top:12px;max-width:720px}
.btn{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:14px;padding:13px 22px;font-weight:700;font-size:16px;text-decoration:none;background:var(--g);color:#fff;box-shadow:0 3px 0 var(--g-deep);transition:transform .1s}
.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(1px);box-shadow:0 1px 0 var(--g-deep)}
.btn.ghost{background:transparent;color:var(--g-deep);box-shadow:inset 0 0 0 2px var(--g-line)}
.btn.sun{background:var(--sun);color:#3a2c00;box-shadow:0 3px 0 #C99A10}
.btn svg{width:18px;height:18px}
.mark{position:relative;font-family:var(--fd);font-weight:800;font-size:30px;line-height:1;display:inline-block;margin-right:14px;color:var(--g-deep)}
.mark i{position:absolute;right:-14px;top:-3px;width:7px;height:14px;border:solid var(--red);border-width:0 4px 4px 0;border-radius:1px;transform:rotate(45deg)}
html[data-theme="blue"] .mark i{border-color:var(--sun)}
/* nav */
.nav{position:sticky;top:0;z-index:40;background:rgba(242,247,244,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
html[data-theme="blue"] .nav{background:rgba(243,245,251,.92)}
.nav .in{display:flex;align-items:center;gap:18px;height:66px}
.nav .links{display:flex;gap:18px;margin-left:12px}
.nav .links a{color:var(--ink-2);text-decoration:none;font-weight:600;font-size:15px;white-space:nowrap}
.nav .links a:hover{color:var(--g-deep)}
.nav .sp{flex:1}
.pill{display:inline-flex;border:1.5px solid var(--line);border-radius:99px;overflow:hidden;background:#fff}
.pill button{border:0;background:none;padding:5px 11px;font-size:13px;font-weight:700;color:var(--ink-2)}
.pill button.on{background:var(--g);color:#fff}
.dot2{display:inline-flex;gap:2px;vertical-align:-1px}.dot2 i{width:9px;height:9px;border-radius:50%;display:inline-block}
/* hero */
.hero{padding:64px 0 56px;position:relative;overflow:hidden}
.hero .grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center}
.hero h1{font-size:clamp(27px,4.4vw,48px);text-wrap:balance;font-weight:800;letter-spacing:-.01em}
.hero h1 em{font-style:normal;color:var(--g)}
.hero .sub{font-size:19px;color:var(--ink-2);margin-top:18px;max-width:600px}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero .note{font-size:14px;color:var(--ink-3);margin-top:14px}
.bandbar{display:flex;gap:6px;margin-top:28px;align-items:flex-end}
.bandbar div{flex:1;border-radius:10px 10px 4px 4px;display:flex;align-items:flex-end;justify-content:center;font-family:var(--fd);font-weight:800;color:#fff;padding-bottom:6px;font-size:15px}
.bandcap{display:flex;justify-content:space-between;font-size:13px;color:var(--ink-3);margin-top:6px}
/* phone */
.phone{width:320px;max-width:100%;margin:0 auto;background:var(--surface);border-radius:34px;box-shadow:0 0 0 10px var(--dark),0 30px 60px rgba(0,40,28,.28);overflow:hidden;position:relative}
.phone .top{background:var(--g-deep);color:#fff;padding:18px 18px 16px}
.phone .top b{font-family:var(--fd);font-size:20px;display:block}
.phone .top span{font-size:13px;opacity:.85}
.phone .body{padding:16px}
.qcard{border:1.5px solid var(--line);border-radius:16px;padding:14px}
.qcard .q{font-weight:700;font-size:16px;margin:6px 0 10px}
.opt{display:flex;gap:10px;align-items:center;border:1.5px solid var(--line);border-radius:12px;padding:8px 10px;margin-top:7px;font-size:15px;background:#fff;width:100%;text-align:left;color:var(--ink)}
.opt .L{width:24px;height:24px;border-radius:8px;background:var(--bg);display:grid;place-items:center;font-weight:800;font-size:13px;flex:0 0 24px}
.opt.right{border-color:var(--b5);background:#EAF8EF}.opt.right .L{background:var(--b5);color:#fff}
.opt.wrong{border-color:var(--b1);background:#FDECEC}.opt.wrong .L{background:var(--b1);color:#fff}
.opt.sel{border-color:var(--g)}
.expl{margin-top:10px;background:var(--g-soft);color:var(--g-deep);border-radius:12px;padding:10px 12px;font-size:14px}
.floatband{position:absolute;right:-14px;top:-18px;background:#fff;border-radius:16px;box-shadow:var(--sh);padding:10px 14px;display:flex;gap:10px;align-items:center;font-size:13px}
.bd{display:inline-grid;place-items:center;min-width:30px;height:30px;border-radius:9px;color:#fff;font-weight:800;font-family:var(--fd)}
/* strips and cards */
.strip{background:var(--surface);border-block:1px solid var(--line);padding:22px 0}
.strip .in{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
.strip .lbl{grid-column:1/-1;font-size:13px;font-weight:700;color:var(--ink-3)}
.plat{border:1px solid var(--line);border-radius:14px;padding:10px 14px}
.plat b{display:block;font-size:15px}.plat span{font-size:13px;color:var(--ink-2)}
.g3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.g2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.g5{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--sh)}
.card h3{font-size:21px;font-weight:700}
.card p{color:var(--ink-2);margin-top:8px;font-size:16px}
.card .proof{margin-top:12px;font-size:14px;color:var(--g-deep);background:var(--g-soft);border-radius:10px;padding:8px 10px}
.step{position:relative}
.step .n{width:44px;height:44px;border-radius:14px;background:var(--g);color:#fff;display:grid;place-items:center;font-family:var(--fd);font-weight:800;font-size:22px;margin-bottom:14px}
.ic{width:44px;height:44px;border-radius:14px;background:var(--g-soft);color:var(--g-deep);display:grid;place-items:center;margin-bottom:12px}
.ic svg{width:24px;height:24px}
/* chapters */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:24px 0 18px}
.tabs button{border:1.5px solid var(--line);background:#fff;border-radius:99px;padding:7px 16px;font-weight:700;color:var(--ink-2)}
.tabs button.on{background:var(--g);border-color:var(--g);color:#fff}
.chlist{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.ch{border:1px solid var(--line);border-radius:10px;padding:5px 10px;font-size:14px;background:#fff;color:var(--ink-2)}
.ch.ready{border-color:var(--g);background:var(--g-soft);color:var(--g-deep);font-weight:600}
.ch.ready::before{content:"✓ ";font-weight:800}
.grplbl{font-size:13px;font-weight:700;color:var(--ink-3);margin-top:14px}
/* chapter fold */
.chfold{margin-top:40px}.chfold summary{cursor:pointer;list-style:none;display:flex;align-items:center;flex-wrap:wrap;gap:6px}.chfold summary::-webkit-details-marker{display:none}.chfold summary::before{content:'';width:10px;height:10px;border:solid currentColor;border-width:0 2px 2px 0;transform:rotate(-45deg);margin-right:12px;transition:transform .2s}.chfold[open] summary::before{transform:rotate(45deg)}
/* tester */
.tester{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:24px;align-items:start}
.tpane{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--sh);min-height:420px}
.prog{height:8px;background:var(--bg);border-radius:99px;overflow:hidden;margin:10px 0 4px}.prog i{display:block;height:100%;background:var(--g);border-radius:99px;transition:width .3s}
.bigband{width:88px;height:88px;border-radius:26px;display:grid;place-items:center;font-family:var(--fd);font-weight:800;font-size:46px;color:#fff;margin:0 auto 12px}
.small{font-size:14px}.muted{color:var(--ink-2)}.faint{color:var(--ink-3)}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
/* roles */
.role{display:flex;flex-direction:column}
.role .who{font-size:13px;font-weight:700;color:var(--g-deep)}
.role h3{font-size:19px;margin-top:4px}
.role ul{margin:10px 0 0;padding-left:18px;color:var(--ink-2);font-size:15px}
/* dark */
.dark{background:var(--dark);color:var(--dark-ink)}
.dark .h2,.dark h3{color:#fff}.dark .lede{color:var(--dark-ink)}
.dark .card{background:var(--dark-2);border-color:rgba(255,255,255,.08);box-shadow:none}
.dark .card p{color:var(--dark-ink)}
.dark .eyeb{background:rgba(255,255,255,.08);color:var(--sun)}
.dark .ic{background:rgba(255,255,255,.08);color:var(--sun)}
/* pilot */
.pilot{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:24px}
.price{margin-top:6px;font-family:var(--fd);font-weight:800;font-size:56px;color:var(--g-deep);line-height:1}
.checks{list-style:none;padding:0;margin:14px 0 0}
.checks li{padding-left:28px;position:relative;margin-top:8px}
.checks li::before{content:"";position:absolute;left:4px;top:7px;width:6px;height:11px;border:solid var(--g);border-width:0 3px 3px 0;transform:rotate(45deg)}
details.fq{border-bottom:1px solid var(--line);padding:14px 0}
details.fq summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:12px}
details.fq summary::after{content:"+";font-weight:800;color:var(--g)}
details.fq[open] summary::after{content:"–"}
details.fq p{color:var(--ink-2);margin-top:8px}
.cta{background:var(--g-deep);color:#fff;border-radius:28px;padding:44px;display:grid;grid-template-columns:minmax(0,1.3fr) auto;gap:24px;align-items:center}
.cta h2{color:#fff;font-size:clamp(26px,3.4vw,38px)}
.cta p{color:rgba(255,255,255,.85);margin-top:10px}
footer{padding:36px 0 44px;color:var(--ink-3);font-size:14px}
footer .in{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center}
.demo{font-size:12px;font-weight:700;color:#8a5a00;background:var(--sun-soft);border-radius:99px;padding:2px 8px}
@media (max-width:980px){.strip .in{grid-template-columns:repeat(2,minmax(0,1fr))}.hero .grid,.tester,.pilot{grid-template-columns:1fr}.g5{grid-template-columns:repeat(2,minmax(0,1fr))}.nav .links{display:none}.floatband{right:0}}
@media (max-width:720px){.g3,.g2,.g5{grid-template-columns:1fr}.sec{padding:60px 0}.cta{grid-template-columns:1fr;padding:28px}.hero{padding-top:36px}.nav .hideS{display:none}.phone{width:290px}.floatband{position:static;margin:22px auto 0;width:max-content}}

.nav .btn{white-space:nowrap}
.tagl{white-space:nowrap;font-size:13px;color:var(--ink-3);font-weight:600;margin-left:12px}
.streams{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.streams span{background:var(--red-soft);color:#9B1520;font-weight:700;font-size:14px;border-radius:99px;padding:5px 14px}
html[data-theme="blue"] .streams span{background:var(--sun-soft);color:#7a4a00}
.subj .card h3{font-size:20px}
.card.soon{background:transparent;border-style:dashed;box-shadow:none}
.chip-soon{font-size:12px;font-weight:700;color:#8a5a00;background:var(--sun-soft);border-radius:99px;padding:2px 10px}
.role.first{border:2px solid var(--g);background:linear-gradient(180deg,var(--g-soft),var(--surface) 55%)}
.role .ic{margin-bottom:10px}
.story{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:40px;align-items:start}
.story p{color:var(--ink-2);margin-top:14px}
.story .sign{font-weight:700;color:var(--ink);margin-top:18px}
.facts{display:flex;flex-direction:column;gap:12px}
.fact{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--g);border-radius:14px;padding:14px 16px}
.fact:last-child{border-left-color:var(--red)}
.fact b{display:block;font-family:var(--fd);font-size:17px}
.fact span{display:block;color:var(--ink-2);font-size:15px;margin-top:4px}
.doors{display:flex;flex-direction:column;gap:10px;margin-top:20px}
.door{display:flex;gap:12px;align-items:flex-start;border:1px solid var(--line);border-radius:14px;padding:12px 14px;background:var(--bg)}
.door .ic{margin:0;flex:0 0 40px;width:40px;height:40px}
.door p{margin:2px 0 0;color:var(--ink-2);font-size:15px}
@media (max-width:1240px){.tagl{display:none}}
@media (max-width:980px){.story{grid-template-columns:1fr;gap:24px}.tagl{display:none}}

h1,h2,h3,.h2{line-height:1.28;letter-spacing:-0.01em}
.nav .in{gap:14px}.nav .links{gap:14px;margin-left:6px}.nav .links a{font-size:14px}.pill{flex:none}.pill button{padding:5px 10px}