@font-face{font-family:Fyntra Grotesk;font-style:normal;font-weight:400 700;font-display:swap;src:url(/assets/fonts/inter-tight-latin.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--paper:#f4f4f4;--surface:#fff;--surface-edge:#e3e4e7;--ink:#0b0b0c;--ink-2:#4f535a;--rule:#d6d7da;--blue:#4a6fd1;--blue-2:#87a2e3;--focus:#2563eb;--gutter:16px;--grotesk:"Fyntra Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans Bengali", "Nirmala UI", sans-serif;--mono:ui-monospace, "Cascadia Mono", Consolas, "Roboto Mono", monospace}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--paper:#0c0d10;--surface:#15171b;--surface-edge:#24262b;--ink:#f2f3f5;--ink-2:#a5aab3;--rule:#2a2c31;--blue:#3354ad;--blue-2:#5874c2;--focus:#7fa6ff}}@media (min-width:640px){:root{--gutter:24px}}*,:before,:after{box-sizing:border-box}html{-moz-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);font-family:var(--grotesk);-webkit-font-smoothing:antialiased;margin:0;font-size:16.5px;line-height:1.6;overflow-x:hidden}:lang(bn) body,body:lang(bn){line-height:1.75}img,svg{max-width:100%;display:block}a{color:inherit;text-underline-offset:3px}a:hover{text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:6px}h1,h2,h3{text-wrap:balance;letter-spacing:-.02em;margin:0 0 12px;font-weight:600;line-height:1.12}h2{letter-spacing:-.03em;font-size:clamp(1.45rem,2.4vw,1.9rem)}h3{letter-spacing:-.015em;font-size:1.12rem}:lang(bn) h1,:lang(bn) h2,:lang(bn) h3{letter-spacing:0;line-height:1.3}p{margin:0 0 16px}.wrap{width:100%;max-width:1280px;padding:0 var(--gutter);margin:0 auto}@media (min-width:1000px){.wrap{padding:0 32px}}.skip-link{left:var(--gutter);z-index:20;background:var(--ink);color:var(--paper);border-radius:10px;padding:10px 16px;position:absolute;top:-100px}.skip-link:focus{top:12px}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.byline{text-decoration:none}.byline:hover{text-decoration:underline}.pill{background:var(--ink);border-radius:999px;justify-content:center;align-items:center;gap:8px;min-height:38px;padding:7px 18px;font-weight:500;text-decoration:none;transition:opacity .15s;display:inline-flex;color:var(--paper)!important}.pill:hover{opacity:.85}.pill svg{flex:none;width:18px;height:18px}.pill-light{background:#fff;min-height:48px;padding:10px 22px;color:#0b0b0c!important}.pill-ghost{background:0 0;min-height:48px;padding:10px 22px;box-shadow:inset 0 0 0 1px;color:inherit!important}.actions{flex-wrap:wrap;gap:10px;display:flex}.topbar-inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:16px;min-height:72px;font-size:.88rem;display:grid}.topbar a{text-decoration:none}.topbar-nav{gap:24px;display:flex}.topbar-nav a:hover{text-decoration:underline}.topbar-nav a[aria-current=page]{text-underline-offset:6px;text-decoration:underline;text-decoration-thickness:1px}.topbar-brand{letter-spacing:-.01em;align-items:center;gap:8px;font-size:1rem;font-weight:600;display:inline-flex}.topbar-brand img{border-radius:7px;width:24px;height:24px}.topbar-end{justify-self:end;align-items:center;gap:18px;display:flex}@media (max-width:759px){.topbar-inner{grid-template-columns:minmax(0,1fr) auto}.topbar-nav{display:none}}.tag{letter-spacing:.04em;text-transform:uppercase;margin:0;padding-top:.5em;font-size:.8rem;font-weight:500}.panel{background:var(--blue);color:#fff;border-radius:28px;padding:clamp(24px,3.6vw,44px)}.panel :focus-visible{outline-color:#fff}.split{grid-template-columns:minmax(0,1fr);gap:16px;display:grid}@media (min-width:1000px){.split{grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:32px}.page-body>.prose{grid-column:2}}.page-head{padding-top:clamp(36px,6.5vw,96px);padding-bottom:clamp(40px,6vw,80px)}.page-head .meta{border:1px solid var(--rule);color:var(--ink-2);border-radius:15px;margin:0 0 clamp(20px,3vw,32px);padding:4px 14px;font-size:.8rem;font-weight:500;display:inline-block}.page-head h1{letter-spacing:-.05em;margin:0 0 clamp(18px,2.4vw,28px);font-size:clamp(3rem,7.4vw,6.25rem);line-height:.94}.page-head h1:lang(bn){letter-spacing:0;font-size:clamp(2.5rem,6vw,5rem);font-weight:700;line-height:1.2}.lede{max-width:32em;color:var(--ink-2);margin:0;font-size:clamp(1.1rem,1.7vw,1.32rem);line-height:1.45}.lede:lang(bn){line-height:1.65}.page-body{padding-bottom:clamp(72px,9vw,120px)}.prose{max-width:46rem}.prose>h2{border-top:1px solid var(--rule);margin:clamp(40px,6vw,56px) 0 16px;padding-top:22px;scroll-margin-top:24px}.prose ul,.prose ol{margin:0 0 16px;padding-left:22px}.prose li+li{margin-top:6px}.prose li::marker{color:var(--ink-2)}.prose code{border:1px solid var(--surface-edge);background:var(--surface);font-family:var(--mono);border-radius:6px;padding:.1em .4em;font-size:.86em}.path{white-space:nowrap;font-weight:600}.muted{color:var(--ink-2)}.table-scroll{margin:8px 0 20px;overflow-x:auto}.prose table{border-collapse:collapse;width:100%;font-size:.95rem}.prose th,.prose td{border-bottom:1px solid var(--rule);text-align:left;vertical-align:top;padding:13px 20px 13px 0}.prose th{border-bottom-color:var(--ink);color:var(--ink-2);letter-spacing:.04em;text-transform:uppercase;font-size:.78rem;font-weight:500}.prose td:first-child{width:30%;font-weight:600}.in-short{margin-bottom:8px}.in-short>p{letter-spacing:-.035em;margin:0 0 18px;font-size:clamp(1.6rem,2.6vw,2.1rem);font-weight:600;line-height:1.05}.in-short>p:lang(bn){letter-spacing:0;line-height:1.3}.prose .in-short ul{margin:0;padding:0;list-style:none}.prose .in-short li{border-top:1px solid #ffffff61;margin:0;padding:13px 0}.prose .in-short li:last-child{padding-bottom:0}.toc{display:none}@media (min-width:1000px){.toc{align-self:start;max-width:300px;font-size:.9rem;display:block;position:sticky;top:24px}}.toc p{letter-spacing:.04em;text-transform:uppercase;margin:0 0 14px;font-size:.8rem;font-weight:500}.toc ol{border-top:1px solid var(--rule);counter-reset:toc;margin:0;padding:0;list-style:none}.toc li{border-bottom:1px solid var(--rule);counter-increment:toc}.toc a{color:var(--ink-2);gap:14px;padding:7px 0;line-height:1.4;text-decoration:none;display:flex}.toc a:before{content:counter(toc, decimal-leading-zero);font-variant-numeric:tabular-nums;flex:none;min-width:1.6em;font-size:.8rem;line-height:1.75}.toc a:hover{color:var(--ink)}.cards{gap:16px;display:grid}.card{border:1px solid var(--surface-edge);background:var(--surface);border-radius:28px;padding:clamp(24px,3.6vw,44px)}.card h3{margin-top:30px}.icon{background:var(--blue);color:#fff;border-radius:13px;place-items:center;width:44px;height:44px;margin-bottom:22px;display:grid}.icon svg{width:22px;height:22px}.prose .steps{counter-reset:step;padding:0;list-style:none}.steps li{counter-increment:step;min-height:28px;padding-left:44px;position:relative}.prose .steps li+li{margin-top:14px}.steps li:before{content:counter(step);background:var(--ink);width:28px;height:28px;color:var(--paper);border-radius:50%;place-items:center;font-size:.82rem;font-weight:600;line-height:1;display:grid;position:absolute;top:0;left:0}.note{border:1px solid var(--rule);background:var(--paper);border-radius:16px;margin:0 0 20px;padding:14px 18px 14px 50px;position:relative}.note:before{content:"!";content:"!" / "";background:var(--ink);width:22px;height:22px;color:var(--paper);border-radius:50%;place-items:center;font-size:.8rem;font-weight:700;line-height:1;display:grid;position:absolute;top:16px;left:16px}.panel .note{background:#00000029;border-color:#0000}.panel .note:before{color:var(--blue);background:#fff}details{border-top:1px solid var(--rule)}details:last-of-type{border-bottom:1px solid var(--rule)}summary{cursor:pointer;letter-spacing:-.015em;justify-content:space-between;align-items:center;gap:20px;padding:20px 0;font-size:clamp(1.08rem,1.5vw,1.25rem);font-weight:500;line-height:1.3;list-style:none;display:flex}summary:lang(bn){letter-spacing:0;line-height:1.5}summary::-webkit-details-marker{display:none}summary:after{content:"+";content:"+" / "";border:1px solid var(--ink);border-radius:50%;flex:none;place-items:center;width:32px;height:32px;font-size:1.15rem;font-weight:400;line-height:1;transition:transform .15s,background-color .15s,color .15s;display:grid}summary:hover:after,details[open] summary:after{background:var(--ink);color:var(--paper)}details[open] summary:after{transform:rotate(45deg)}details>p{max-width:62ch;color:var(--ink-2)}details>:last-child{margin-bottom:24px}.contact{align-items:end;gap:24px;margin-top:48px;display:grid}@media (min-width:720px){.contact{grid-template-columns:minmax(0,1fr) auto}}.contact h2{letter-spacing:-.04em;margin-bottom:16px;font-size:clamp(1.8rem,3.4vw,2.6rem);line-height:1}.contact h2:lang(bn){letter-spacing:0;line-height:1.3}.contact .note{margin:20px 0 0}.lost{padding:8px 0 clamp(56px,8vw,104px)}.lost .panel{text-align:center;place-items:center;min-height:clamp(440px,68vh,720px);padding-top:56px;padding-bottom:56px;display:grid;position:relative;overflow:hidden}.lost .panel>div{position:relative}@media (min-width:760px){.lost .panel{padding-top:120px;padding-bottom:120px}.lost .panel:before,.lost .panel:after{content:"";pointer-events:none;filter:blur(16px);background:radial-gradient(closest-side at 26% 58%,#ffffff57,#0000),radial-gradient(closest-side at 58% 72%,#ffffff47,#0000),radial-gradient(closest-side at 84% 86%,#ffffff38,#0000);width:50%;height:170px;position:absolute;bottom:-60px}.lost .panel:before{left:-8%}.lost .panel:after{right:-8%;transform:scaleX(-1)}}.lost .tag{margin-bottom:clamp(18px,3vw,32px);padding:0}.lost h1{letter-spacing:-.055em;margin:0 0 clamp(22px,3vw,36px);font-size:clamp(3.2rem,10.4vw,9.5rem);line-height:.9}.lost p{max-width:30em;margin:0 auto 6px}.lost .actions{justify-content:center;margin-top:30px}.site-footer{border-top:1px solid var(--rule);color:var(--ink-2);padding:48px 0 56px;font-size:.92rem}.site-footer .container{gap:18px;display:grid}@media (min-width:860px){.site-footer .container{grid-template-columns:auto 1fr auto;align-items:center;gap:32px}}.footer-brand{color:var(--ink-2);letter-spacing:-.02em;align-items:center;gap:8px;font-size:1.1rem;font-weight:600;text-decoration:none;display:inline-flex}.footer-brand img{border-radius:7px;width:24px;height:24px}.footer-links{flex-wrap:wrap;gap:6px 20px;margin:0;padding:0;list-style:none;display:flex}.footer-links a{color:var(--ink-2);text-decoration:none}.footer-links a:hover,.footer-links a[aria-current=page]{color:var(--ink)}.site-footer p{margin:0}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.home{--note:#fffffff0;--note-ink:#0f1419;--note-ink-2:#59606b}@media (prefers-color-scheme:dark){.home{--note:#1e2026f0;--note-ink:#f2f3f5;--note-ink-2:#a5aab3}}.stage{max-width:1280px;margin:0 auto;container-type:inline-size}.stage>*{--u:1cqw}.headline{margin:calc(var(--u) * 2) 0 0;text-align:center;font-size:calc(var(--u) * 13);letter-spacing:-.04em;text-wrap:nowrap;line-height:.88}.headline span{display:block}.headline:lang(bn){font-size:calc(var(--u) * 8.5);letter-spacing:-.01em;font-weight:700;line-height:1.12}.scene{--w:calc(var(--u) * 20);--h:calc(var(--w) * 2.076);--cx:calc(var(--u) * 45);--cy:calc(var(--u) * 8);--tilt:rotateZ(-38deg) rotateX(14deg) rotateY(26deg);margin-top:calc(var(--u) * 6);position:relative}.device,.device-shadow{left:calc(var(--cx) - var(--w) / 2);top:calc(var(--cy) - var(--h) / 2);width:var(--w);height:var(--h);border-radius:calc(var(--w) * .165);position:absolute}.device{z-index:2;transform-style:preserve-3d;transform:perspective(calc(var(--w) * 7)) var(--tilt)}.edge{border-radius:inherit;background:linear-gradient(160deg,#55585e 0%,#1f2023 20%,#131416 55%,#26282c 85%,#45484e 100%);position:absolute;inset:0}.edge:first-child{transform:translateZ(calc(var(--w) * -.0075));background:#5d6066}.edge:nth-child(2){transform:translateZ(calc(var(--w) * -.015))}.edge:nth-child(3){transform:translateZ(calc(var(--w) * -.0225))}.edge:nth-child(4){transform:translateZ(calc(var(--w) * -.03))}.edge:nth-child(5){transform:translateZ(calc(var(--w) * -.0375))}.edge:nth-child(6){transform:translateZ(calc(var(--w) * -.045))}.edge:nth-child(7){transform:translateZ(calc(var(--w) * -.0525))}.edge:nth-child(8){transform:translateZ(calc(var(--w) * -.06))}.edge:nth-child(9){transform:translateZ(calc(var(--w) * -.0675))}.edge:nth-child(10){transform:translateZ(calc(var(--w) * -.075));background:#3c3f44}.edge:nth-child(n+3):nth-child(-n+8):before,.edge:nth-child(n+3):nth-child(-n+8):after{content:"";left:calc(var(--w) * -.014);width:calc(var(--w) * .03);background:#34363b;border-radius:3px;position:absolute}.edge:nth-child(n+3):nth-child(-n+8):before{height:4.2%;top:18%}.edge:nth-child(n+3):nth-child(-n+8):after{height:7.6%;box-shadow:0 calc(var(--h) * .098) 0 #34363b;top:26%}.device-face{padding:calc(var(--w) * .012);border-radius:inherit;background:linear-gradient(150deg,#74777d 0%,#2a2b2f 16%,#141517 50%,#2c2e32 84%,#6a6d73 100%);position:absolute;inset:0}.device-glass{height:100%;padding:calc(var(--w) * .026);border-radius:calc(var(--w) * .153);background:#040405}.device-screen{border-radius:calc(var(--w) * .127);background:#f4f7fb;height:100%;position:relative;overflow:hidden}.device-screen img{object-fit:cover;object-position:top;width:100%;height:100%}.device-island{top:calc(var(--w) * .022);width:calc(var(--w) * .27);height:calc(var(--w) * .075);margin-left:calc(var(--w) * -.135);background:#050506;border-radius:999px;position:absolute;left:50%}.device-screen:after{content:"";pointer-events:none;background:linear-gradient(120deg,#ffffff3d 0%,#ffffff0f 28%,#0000 44%);position:absolute;inset:0}.device-shadow{z-index:1;filter:blur(calc(var(--u) * 2));transform:translate(calc(var(--u) * -3.5), calc(var(--u) * 5)) rotate(-38deg) scale(.9, .94);background:#0c163a6b}.hero-panel{z-index:0;height:calc(var(--u) * 34);margin:0 calc(var(--u) * 2);border-radius:calc(var(--u) * 3.2);background:radial-gradient(ellipse 55% 75% at 84% 34%, var(--blue-2), transparent 72%), linear-gradient(100deg, var(--blue), var(--blue) 45%, #6384da);color:#fff;position:relative;overflow:hidden}.hero-copy{left:calc(var(--u) * 4.5);bottom:calc(var(--u) * 3.6);width:calc(var(--u) * 31);position:absolute}.wordmark{margin:0 0 calc(var(--u) * 1.2);font-size:calc(var(--u) * 6);letter-spacing:-.035em;font-weight:600;line-height:.95}.hero-copy p:not(.wordmark){max-width:26em;margin:0 0 20px;font-size:.95rem;line-height:1.45}.notes{top:50%;right:calc(var(--u) * 4.5);width:clamp(280px, calc(var(--u) * 27), 360px);gap:10px;margin:0;padding:0;list-style:none;display:grid;position:absolute;transform:translateY(-50%)}.notice{background:var(--note);color:var(--note-ink);border-radius:22px;gap:12px;padding:14px 16px;font-size:.82rem;line-height:1.38;display:flex;box-shadow:0 12px 32px #12246038}.notice+.notice{margin-left:22px}.notice img{border-radius:10px;flex:none;width:34px;height:34px}.notice p{margin:0}.notice .meta{color:var(--note-ink-2);font-size:.74rem}.notice strong{font-size:.88rem;font-weight:600;display:block}@media (max-width:999px){.notes{display:none}}@media (max-width:899px){.headline{margin-top:calc(var(--u) * 4);font-size:calc(var(--u) * 13);text-wrap:balance}.headline:lang(bn){font-size:calc(var(--u) * 11)}.scene{--w:min(calc(var(--u) * 46), 300px);--cx:calc(var(--u) * 50);--cy:calc(var(--w) * .3);--tilt:rotateZ(-20deg) rotateX(10deg) rotateY(16deg);margin-top:calc(var(--w) * .86)}.device-shadow{transform:translate(calc(var(--w) * -.1), calc(var(--w) * .14)) rotate(-20deg) scale(.9, .94)}.hero-panel{height:auto;margin:0 var(--gutter);padding:calc(var(--w) * 1.5) 24px 28px;border-radius:28px}.hero-copy{width:auto;position:static}.wordmark{margin-bottom:12px;font-size:3.2rem}}.block{padding:clamp(80px,10vw,136px) 0 clamp(72px,9vw,120px)}.block-head{gap:18px;margin-bottom:clamp(36px,5vw,64px);display:grid}@media (min-width:900px){.block-head{grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:32px}}.block-head h2{letter-spacing:-.045em;max-width:13em;margin:0 0 18px;font-size:clamp(2.2rem,5vw,4.2rem);line-height:1}.block-head h2:lang(bn){letter-spacing:0;line-height:1.25}.block-head p{max-width:34em;color:var(--ink-2);margin:0}.index-list{counter-reset:item;grid-template-columns:minmax(0,1fr);gap:0 32px;margin:0;padding:0;list-style:none;display:grid}@media (min-width:640px){.index-list{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:960px){.index-list{grid-template-columns:repeat(3,minmax(0,1fr))}}.index-list li{border-top:1px solid var(--rule);counter-increment:item;padding:20px 0 36px}.index-list li:before{content:counter(item, decimal-leading-zero);color:var(--ink-2);margin-bottom:22px;font-size:.8rem;display:block}.index-list h3{letter-spacing:-.025em;margin-bottom:8px;font-size:1.3rem}.index-list h3:lang(bn){letter-spacing:0}.index-list p{max-width:26em;color:var(--ink-2);margin:0;font-size:.97rem}