:root{--navy:#102a43;--navy-deep:#071d2e;--green:#087f5b;--green-dark:#056647;--gold:#d5a542;--ink:#20313f;--muted:#607180;--line:#dce5e8;--wash:#f4f8f7;--white:#fff;--radius:14px;--shadow:0 18px 45px rgba(9,36,52,.09);--font:"Noto Sans Bengali","Hind Siliguri","SolaimanLipi",system-ui,-apple-system,sans-serif}
*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.65;background:#fff}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}svg{width:1.25em;height:1.25em;flex:none}.container{width:min(1160px,calc(100% - 32px));margin-inline:auto}.section{padding:72px 0}.section-muted{background:var(--wash)}.centered{text-align:center}.sr-only,.skip-link{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link:focus{position:fixed;z-index:9999;top:8px;left:8px;width:auto;height:auto;padding:10px 16px;clip:auto;background:#fff;color:var(--navy)}:focus-visible{outline:3px solid 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h1{color:#fff}.payment-grid{display:grid;gap:25px}.payment-card,.steps{border:1px solid var(--line);border-radius:var(--radius);padding:28px}.bkash-card{border-top:4px solid #d12070}.payment-label{color:#d12070;font-weight:900}.payment-number{font-size:clamp(28px,6vw,42px);font-weight:850;color:var(--navy);letter-spacing:.03em;margin:15px 0}.qr-image img{max-width:220px;margin:20px auto}.steps ol{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:20px}.steps li{display:flex;gap:15px}.steps li>span{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;background:var(--green);color:#fff;font-weight:800;flex:none}.steps p{margin:4px 0;color:var(--muted)}.bank-details{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}.bank-details div{display:grid;grid-template-columns:1fr 1.5fr;background:#fff;padding:14px 18px}.bank-details dt{color:var(--muted)}.bank-details 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@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}
.credential-id{display:inline-block;margin-top:6px;padding:7px 11px;border:1px solid rgba(255,255,255,.2);border-radius:6px;color:#fff;font-size:14px}

/* Distinctive TaxBD brand lockup and lightweight background system. */
.brand-lockup{display:inline-flex;align-items:center;gap:9px;color:var(--navy);line-height:1}.brand-lockup img{width:50px;height:50px;object-fit:contain}.brand-lockup>span{display:flex;flex-direction:column}.brand-lockup strong{font:900 25px/1 system-ui,-apple-system,sans-serif;letter-spacing:-.045em}.brand-lockup strong span{color:var(--green)}.brand-lockup small{margin-top:5px;color:var(--muted);font-size:10px;font-weight:700;letter-spacing:.01em;white-space:nowrap}.brand-lockup-footer{color:#fff;margin-bottom:14px}.brand-lockup-footer img{width:62px;height:62px}.brand-lockup-footer strong{font-size:29px}.brand-lockup-footer small{color:#9fb5be}.section-muted{position:relative;isolation:isolate}.section-muted:before{content:"";position:absolute;z-index:-1;inset:0;background-image:radial-gradient(circle at 1px 1px,rgba(8,127,91,.11) 1px,transparent 1.5px);background-size:28px 28px;mask-image:linear-gradient(90deg,#000,transparent 44%,transparent 65%,#000);opacity:.5}.experience{position:relative;overflow:hidden}.experience:before,.experience:after{content:"";position:absolute;border:1px solid rgba(8,127,91,.1);border-radius:50%;pointer-events:none}.experience:before{width:430px;height:430px;right:-300px;top:-175px;box-shadow:0 0 0 40px rgba(8,127,91,.025),0 0 0 80px rgba(8,127,91,.018)}.experience:after{width:130px;height:130px;left:-85px;bottom:35px;border-color:rgba(213,165,66,.25)}.audit{position:relative;overflow:hidden;background:linear-gradient(135deg,#fff 0%,#fff 62%,#f3f8f6 62%,#f3f8f6 100%)}.audit:after{content:"৳";position:absolute;right:4vw;bottom:-110px;color:rgba(16,42,67,.035);font:900 330px/1 Georgia,serif;pointer-events:none}.contact-section{position:relative;overflow:hidden;isolation:isolate}.contact-section:before{content:"";position:absolute;z-index:-1;width:700px;height:700px;left:-360px;top:-390px;border:95px solid rgba(8,127,91,.1);border-radius:50%;box-shadow:0 0 0 70px rgba(213,165,66,.035)}.contact-section:after{content:"";position:absolute;z-index:-1;inset:0;background-image:linear-gradient(120deg,transparent 0 70%,rgba(255,255,255,.025) 70% 71%,transparent 71% 78%,rgba(255,255,255,.018) 78% 79%,transparent 79%)}.site-footer{position:relative;overflow:hidden}.footer-orbit{position:absolute;width:360px;height:360px;border:1px solid rgba(255,255,255,.07);border-radius:50%;right:-220px;bottom:-230px;box-shadow:0 0 0 42px rgba(255,255,255,.02),0 0 0 84px rgba(255,255,255,.015)}.site-footer>.container{position:relative;z-index:1}.service-card:nth-child(3n+2){border-top-color:rgba(213,165,66,.7)}.service-card:nth-child(3n+3){border-top-color:rgba(8,127,91,.55)}
