:root{
  --bg:#F2F6FF; --card:#E8EFFE; --navy:#1B2A52; --navy-h:#243566; --text:#0D1733; --text2:#3A4A6B; --muted:#8090B0;
  --gold:#C8940A; --gold-d:#A87A06; --gold-t:#F5E6B0; --white:#ffffff; --on-navy:#ffffff; --line:#D5DFF5; --cta-bg:#1B2A52;
  --hl:#E8EFFE; --gold-text:#A87A06;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0B1226; --card:#141E3A; --navy:#F5E6B0; --navy-h:#ffffff; --text:#EAF0FF; --text2:#B3C0DE; --muted:#7F8DAE;
  --gold:#E3B23C; --gold-d:#E3B23C; --gold-t:#3A2F10; --white:#101938; --on-navy:#0D1733; --line:#24325A; --cta-bg:#141E3A;
  --hl:#1D2A52; --gold-text:#E3B23C; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0B1226; --card:#141E3A; --navy:#F5E6B0; --navy-h:#ffffff; --text:#EAF0FF; --text2:#B3C0DE; --muted:#7F8DAE;
  --gold:#E3B23C; --gold-d:#E3B23C; --gold-t:#3A2F10; --white:#101938; --on-navy:#0D1733; --line:#24325A; --cta-bg:#141E3A;
  --hl:#1D2A52; --gold-text:#E3B23C; color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:70px}
body{margin:0;background:var(--bg);color:var(--text);font-size:16px;line-height:1.65;font-family:'Baloo Da 2','Lexend',system-ui,sans-serif;overflow-x:hidden}
[data-lang="en"] body,[data-lang="en"] button,[data-lang="en"] input{font-family:'Lexend',system-ui,sans-serif}
button,input{font-family:inherit}
[data-lang="bn"] .en{display:none!important}
[data-lang="en"] .bn{display:none!important}
.wrap{max-width:1040px;margin:0 auto;padding-inline:20px}
section{padding-block:72px}
h1,h2,h3{margin:0;line-height:1.2;text-wrap:balance;color:var(--text)}
h2{font-size:clamp(28px,5vw,40px);font-weight:800}
[data-lang="en"] h1,[data-lang="en"] h2,[data-lang="en"] h3{font-weight:700;letter-spacing:-.02em}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--gold-text);margin-bottom:10px}
[data-lang="bn"] .eyebrow{letter-spacing:.02em;text-transform:none;font-size:15px}
.lead{color:var(--text2);max-width:60ch;font-size:18px;margin:14px 0 0}

/* nav */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--bg);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:58px;gap:12px}
.logo{font-size:18px;font-weight:700;color:var(--text);text-decoration:none;white-space:nowrap}
.logo span{color:var(--gold)}
.links{display:flex;align-items:center;gap:4px}
.nav-link{font-size:14px;color:var(--text2);padding:4px 8px;border-radius:5px;text-decoration:none;transition:background .15s,color .15s}
.nav-link:hover{background:var(--hl);color:var(--text)}
.lang{display:flex;border:1px solid var(--line);border-radius:7px;padding:2px;gap:2px;margin-left:8px}
.lt{border:0;background:transparent;color:var(--muted);font-size:13px;padding:3px 10px;border-radius:5px;cursor:pointer;transition:background .15s,color .15s}
.lt:hover{background:var(--hl);color:var(--text2)}
.lt.active{background:var(--navy);color:var(--on-navy)}
@media(max-width:720px){.nav-link{display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--navy);color:var(--on-navy);border:0;border-radius:10px;padding:13px 26px;font-size:17px;font-weight:600;text-decoration:none;cursor:pointer;transition:background .15s,transform .15s,box-shadow .15s}
.btn:hover{background:var(--navy-h);transform:translateY(-1px);box-shadow:0 6px 18px rgba(27,42,82,.25)}
.btn.gold{background:var(--gold);color:#0D1733}
.btn.gold:hover{background:var(--gold-d);color:#fff}

/* hero */
.hero{padding-block:88px 56px}
.hero h1{font-size:clamp(44px,10vw,96px);font-weight:800;line-height:1.05}
[data-lang="en"] .hero h1{font-size:clamp(40px,8.5vw,80px)}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero p{font-size:clamp(18px,2.6vw,22px);color:var(--text2);max-width:34em;margin:22px 0 32px}
.hero .sub{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.hero .sub small{color:var(--muted);font-size:14px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;padding-block:8px 24px}
.stat{background:var(--card);border-radius:14px;padding:22px 20px}
.stat b{display:block;font-size:clamp(26px,5vw,42px);font-weight:800;color:var(--gold-text);line-height:1.1;font-variant-numeric:tabular-nums}
.stat span{color:var(--text2);font-size:15px}
@media(max-width:560px){.stats{grid-template-columns:1fr}}

/* why */
.why-grid,.steps,.ex-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px}
@media(max-width:820px){.why-grid,.steps,.ex-grid{grid-template-columns:1fr}}
.why{border-top:3px solid var(--gold);padding-top:16px}
.why h3{font-size:22px;margin-bottom:6px}
.why p,.step p{margin:0;color:var(--text2)}
.step{background:var(--card);border-radius:14px;padding:26px 22px;min-width:0}
.step .n{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--navy);color:var(--on-navy);font-weight:700;margin-bottom:12px}
.step h3{font-size:21px;margin-bottom:6px}

/* examples */
.ex{background:var(--card);border-radius:14px;padding:14px;min-width:0}
.mock{border-radius:9px;overflow:hidden;background:var(--white);border:1px solid var(--line);aspect-ratio:4/3;display:flex;flex-direction:column}
.mbar{display:flex;gap:4px;padding:7px 9px;background:var(--bg);border-bottom:1px solid var(--line);align-items:center}
.mbar i{width:7px;height:7px;border-radius:50%;background:var(--muted);opacity:.5}
.mbar u{margin-left:8px;font-size:10px;color:var(--muted);text-decoration:none;font-family:'Lexend',sans-serif}
.mbody{flex:1;padding:14px;display:flex;flex-direction:column;gap:8px;min-height:0}
.mnav{display:flex;justify-content:space-between;font-size:11px;font-weight:700;font-family:'Lexend',sans-serif}
.mnav span:last-child{opacity:.6;font-weight:400}
.mh{flex:1;border-radius:7px;padding:12px;display:flex;flex-direction:column;justify-content:flex-end;color:#fff}
.mh b{font-size:17px;line-height:1.2}
.mh small{font-size:11px;opacity:.9}
.mrow{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.mrow div{height:26px;border-radius:5px}
.m1 .mh{background:linear-gradient(135deg,#7A3B1D,#C8741F)} .m1 .mrow div{background:#F3DFC4} .m1 .mnav b{color:#7A3B1D}
.m2 .mh{background:linear-gradient(135deg,#0F5C4D,#2BA38A)} .m2 .mrow div{background:#CFEBE3} .m2 .mnav b{color:#0F5C4D}
.m3 .mh{background:linear-gradient(135deg,#5B2A86,#B0509C)} .m3 .mrow div{background:#EBD6F0} .m3 .mnav b{color:#5B2A86}
.mnav{color:#333}
.ex h3{font-size:18px;margin:14px 4px 2px}
.ex p{margin:0 4px 6px;color:var(--text2);font-size:15px}
.note{margin-top:18px;color:var(--muted);font-size:14px}

/* faq */
.faq{margin-top:32px;max-width:760px}
.q{border-bottom:1px solid var(--line)}
.q button{width:100%;text-align:left;background:none;border:0;color:var(--text);font-size:18px;font-weight:600;padding:18px 4px;display:flex;justify-content:space-between;gap:16px;cursor:pointer;border-radius:6px;transition:background .15s}
.q button:hover{background:var(--hl)}
.q button::after{content:"+";color:var(--gold-text);font-size:24px;line-height:1;transition:transform .2s;flex:none}
.q.open button::after{transform:rotate(45deg)}
.a{display:none;padding:0 4px 18px;color:var(--text2);max-width:62ch}
.q.open .a{display:block}

/* cta strip */
.strip{background:var(--gold);color:#0D1733;padding-block:48px}
.strip .wrap{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.strip h2{color:#0D1733;font-size:clamp(26px,4.5vw,36px)}
.strip p{margin:6px 0 0;color:#2A2205}
.strip .btn{background:#0D1733;color:#fff}
.strip .btn:hover{background:#243566}

/* contact */
form{display:grid;gap:14px;margin-top:32px;max-width:520px}
label{display:grid;gap:5px;font-size:14px;font-weight:600;color:var(--text2)}
input{padding:12px 14px;border-radius:9px;border:1.5px solid var(--line);background:var(--white);color:var(--text);font-size:16px;width:100%;min-width:0}
input:focus{outline:2px solid var(--gold);outline-offset:1px;border-color:var(--gold)}
.hint{font-size:13px;color:var(--muted)}
footer{border-top:1px solid var(--line);padding-block:32px;color:var(--muted);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
footer b{color:var(--text2)}