:root{--lime:#D8FF38;--ink:#151515;--paper:#F4F4EC;--ease:cubic-bezier(.2,.7,.1,1)}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:'DM Sans','Noto Sans Bengali',Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.55;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
:focus-visible{outline:3px solid currentColor;outline-offset:4px}
.wrap{width:min(1240px,100% - 48px);margin-inline:auto}

/* sections: 110px vertical padding, as in the reference */
.sec{padding:110px 0}
.lime{background:var(--lime);color:var(--ink)}
.ink{background:var(--ink);color:var(--paper)}
.paper{background:var(--paper);color:var(--ink)}
.white{background:#fff;color:var(--ink)}

h1,h2{font-weight:700;letter-spacing:-.035em;line-height:1.02}
h1{font-size:clamp(2.7rem,7.2vw,6.4rem)}
h2{font-size:clamp(2.1rem,4.6vw,3.9rem)}
h3{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:600;letter-spacing:-.02em;line-height:1.15}
p{max-width:62ch}
p+p{margin-top:1.1em}
.lead{font-size:clamp(1.1rem,1.6vw,1.3rem)}
.mute{opacity:.7}
small{display:block;font-size:.95rem;opacity:.65;margin-bottom:6px}

/* nav */
.nav{position:fixed;inset:16px 0 auto;z-index:10;pointer-events:none}
.nav .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;background:var(--ink);color:var(--paper);border-radius:999px;padding:10px 10px 10px 26px;pointer-events:auto;box-shadow:0 0 0 1px rgba(244,244,236,.16)}
.logo{font-weight:700;letter-spacing:-.02em}
.nav nav{display:flex;gap:28px;font-size:.95rem}
.nav nav a{transition:color .2s}
.nav nav a:hover{color:var(--lime)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:12px;padding:14px 26px;border-radius:999px;font-weight:600;border:2px solid var(--ink);transition:background .25s,color .25s,border-color .25s}
.btn i{font-style:normal;display:inline-block;transition:transform .3s var(--ease)}
.btn:hover i{transform:translateX(6px)}
.btn.solid{background:var(--ink);color:var(--lime)}
.btn.solid:hover{background:transparent;color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--lime)}
.nav .btn{background:var(--lime);color:var(--ink);border-color:var(--lime);padding:10px 20px}
.nav .btn:hover{background:var(--paper);border-color:var(--paper)}
.cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}

/* hero */
.hero{padding:150px 0 100px}
.hero .wrap{display:grid;grid-template-columns:1.25fr .75fr;gap:64px;align-items:center}
.line{display:block;overflow:hidden;padding-bottom:.08em;margin-bottom:-.08em}
.line span{display:block;transform:translateY(110%);animation:up 1s var(--ease) forwards;animation-delay:calc(.15s + var(--i)*.12s)}
.role{font-size:1.25rem;font-weight:600;margin:32px 0 20px}
.hero .lead{margin-bottom:14px}
.portrait{position:relative;transform:translate(var(--px,0px),var(--py,0px));transition:transform .5s ease-out}
.frame{position:relative;aspect-ratio:4/5;border-radius:44px;overflow:hidden;background:var(--ink);clip-path:inset(100% 0 0 0 round 44px);animation:open 1.2s var(--ease) .3s forwards}
.frame img{width:100%;height:100%;object-fit:cover;object-position:50% 20%;transform:scale(1.2);animation:settle 1.6s var(--ease) .3s forwards}
.chip{position:absolute;left:16px;bottom:16px;background:var(--paper);color:var(--ink);padding:10px 18px;border-radius:999px;font-size:.9rem;font-weight:600;opacity:0;animation:fade .8s ease 1.4s forwards}
.badge{position:absolute;right:-18px;bottom:-26px;width:92px;height:92px;border-radius:50%;background:var(--ink);color:var(--lime);border:4px solid var(--paper);display:grid;place-items:center;font-size:2.2rem;transition:transform .4s var(--ease)}
.badge:hover{transform:scale(1.1)}
.badge span{animation:bob 2s ease-in-out infinite}

/* marquee */
.marq{background:var(--ink);color:var(--lime);overflow:hidden;white-space:nowrap;padding:22px 0}
.track{display:inline-flex;animation:marquee 32s linear infinite}
.marq:hover .track{animation-play-state:paused}
.track span{font-size:clamp(1.4rem,3vw,2.4rem);font-weight:600;letter-spacing:-.02em;margin-right:40px}
.track b{font-weight:500;margin-left:16px}

/* layouts */
.split{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
.split .lead{margin-bottom:1.1em}
.rows{margin-top:56px}
.row{display:grid;grid-template-columns:1.1fr 1.4fr 56px;gap:32px;align-items:center;padding:34px 0;border-top:1px solid color-mix(in srgb,currentColor 25%,transparent)}
.row:last-child{border-bottom:1px solid color-mix(in srgb,currentColor 25%,transparent)}
.row h3{transition:transform .4s var(--ease)}
.row:hover h3{transform:translateX(14px)}
.go{width:56px;height:56px;border-radius:50%;border:2px solid currentColor;display:grid;place-items:center;font-size:1.4rem;transition:background .3s,color .3s,border-color .3s}
.go b{font-weight:500;transition:transform .35s var(--ease)}
.row:hover .go b{transform:rotate(-45deg)}
.ink .row:hover .go{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.paper .row:hover .go{background:var(--ink);color:var(--lime);border-color:var(--ink)}
#media .lead{margin-top:20px}
#media .row,#companies .row{grid-template-columns:1.3fr 1fr 56px}
.aff{margin-top:40px}
.aff>div{padding:22px 0;border-top:1px solid color-mix(in srgb,currentColor 25%,transparent)}
.aff p{margin-top:4px}
.pills{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0}
.pills span{border:2px solid currentColor;border-radius:999px;padding:10px 22px;font-weight:600;transition:background .25s,color .25s,border-color .25s}
.pills span:hover{background:var(--ink);color:var(--lime);border-color:var(--ink)}
.belief h2{color:var(--lime);font-size:clamp(2.6rem,7vw,6rem);max-width:14ch}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:64px;margin-top:56px}

/* contact */
#contact{padding:72px 0}
.huge{font-size:clamp(3.2rem,9vw,7rem);line-height:.95;margin-bottom:20px}
#contact .cta{margin-top:28px}
.mail{display:inline-flex;align-items:center;gap:16px;margin-top:28px;font-size:clamp(1.25rem,4vw,3.2rem);font-weight:600;letter-spacing:-.025em;border-bottom:3px solid var(--ink);overflow-wrap:anywhere}
.mail i{font-style:normal;transition:transform .3s var(--ease)}
.mail:hover i{transform:translateX(10px)}
.foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:64px;padding-top:24px;border-top:2px solid var(--ink);font-size:.95rem}

/* motion */
.js .rv{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:var(--d,0s)}
.js .rv.in{opacity:1;transform:none}
@keyframes up{to{transform:none}}
@keyframes open{to{clip-path:inset(0 round 44px)}}
@keyframes settle{to{transform:scale(1)}}
@keyframes fade{to{opacity:1}}
@keyframes bob{50%{transform:translateY(8px)}}
@keyframes marquee{to{transform:translateX(-50%)}}

@media (max-width:900px){
  .hero .wrap,.split,.cols{grid-template-columns:1fr;gap:48px}
  .portrait{max-width:440px}
  .nav nav{display:none}
}
@media (max-width:760px){
  .sec{padding:80px 0}
  .hero{padding-top:130px}
  .row,#media .row,#companies .row{grid-template-columns:1fr 56px;gap:10px 16px}
  .go{grid-column:2;grid-row:1/3}
  .badge{right:8px;width:76px;height:76px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .line span,.frame img{transform:none!important}
  .frame{clip-path:none!important}
  .chip{opacity:1!important}
  .js .rv{opacity:1;transform:none}
}

/* cover flow */
.gallery{overflow:hidden}
.gallery h2{max-width:16ch}
.cf{--w:clamp(250px,34vw,460px);margin-top:56px;outline-offset:-4px}
.cf-stage{position:relative;height:calc(var(--w)*1.22);perspective:1500px;perspective-origin:50% 35%;touch-action:pan-y;cursor:grab;background:radial-gradient(ellipse 50% 45% at 50% 80%,rgba(216,255,56,.09),transparent 70%)}
.cf-stage:active{cursor:grabbing}
.cf-item{position:absolute;left:50%;top:6%;width:var(--w);margin-left:calc(var(--w)/-2);aspect-ratio:3/2;filter:brightness(.45);cursor:pointer;will-change:transform;transition:transform .9s var(--ease),opacity .7s ease,filter .9s ease}
.cf-item.on{filter:none;cursor:default}
.cf-item img{width:100%;height:100%;object-fit:cover;object-position:var(--pos,50% 50%);border-radius:18px;user-select:none;-webkit-user-drag:none}
.cf-item::after{content:"";position:absolute;left:0;right:0;top:calc(100% + 4px);height:100%;border-radius:18px;background:var(--img) var(--pos,50% 50%)/cover;transform:scaleY(-1);-webkit-mask-image:linear-gradient(to top,rgba(0,0,0,.4),transparent 55%);mask-image:linear-gradient(to top,rgba(0,0,0,.4),transparent 55%);pointer-events:none}
.cf-ctrl{display:flex;justify-content:center;align-items:center;gap:28px;margin-top:4px}
.cf-count{min-width:5ch;text-align:center;font-weight:500;font-variant-numeric:tabular-nums}
.cf-count b{font-weight:700}
.cf-btn{position:relative;width:68px;height:68px;border-radius:50%;border:2px solid var(--paper);background:transparent;color:var(--paper);font:inherit;font-size:1.6rem;cursor:pointer;overflow:hidden;transition:background .3s,color .3s,border-color .3s,transform .2s,opacity .3s}
.cf-btn span{position:absolute;inset:0}
.cf-btn i{position:absolute;inset:0;display:grid;place-items:center;font-style:normal;transition:transform .45s var(--ease)}
.cf-btn.next i:last-child{transform:translateX(-72px)}
.cf-btn.prev i:last-child{transform:translateX(72px)}
.cf-btn:hover:not([aria-disabled=true]){background:var(--lime);color:var(--ink);border-color:var(--lime)}
.cf-btn:hover:not([aria-disabled=true]) i:first-child{transform:translateX(72px)}
.cf-btn.prev:hover:not([aria-disabled=true]) i:first-child{transform:translateX(-72px)}
.cf-btn:hover:not([aria-disabled=true]) i:last-child{transform:none}
.cf-btn:active:not([aria-disabled=true]){transform:scale(.9)}
.cf-btn[aria-disabled=true]{opacity:.28;cursor:default}
.cf-btn.nudge{animation:ping 2.2s ease-out infinite}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(216,255,56,.55)}70%,100%{box-shadow:0 0 0 22px rgba(216,255,56,0)}}
@media (max-width:760px){.cf-btn{width:60px;height:60px}.cf-ctrl{gap:20px}}

/* substack posts */
.w-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap}
.w-head h2{max-width:15ch}
.w-head .lead{margin-top:16px}
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:56px}
.post{position:relative;display:flex;flex-direction:column;background:var(--ink);color:var(--paper);border-radius:28px;padding:32px 32px 28px;transition:transform .5s var(--ease)}
.post:hover{transform:translateY(-8px)}
.post:not(.skel){animation:rise .7s var(--ease) backwards;animation-delay:calc(var(--n,0)*.12s)}
.post time{font-size:.95rem;opacity:.6}
.post h3{margin:10px 0 18px}
.post h3 a{transition:color .25s}
.post h3 a:hover{color:var(--lime)}
.post-body{position:relative;height:220px;overflow:hidden}
.post-body p{max-width:none;opacity:.82;font-size:1.02rem}
.post-body::after{content:"";position:absolute;inset:0;background:linear-gradient(to bottom,rgba(21,21,21,0) 0%,rgba(21,21,21,.92) 60%,var(--ink) 80%);pointer-events:none}
.read{position:absolute;right:0;bottom:0;z-index:1;display:inline-flex;align-items:center;gap:10px;padding:12px 22px;border-radius:999px;background:var(--lime);color:var(--ink);font-weight:600;overflow:hidden;isolation:isolate;transition:transform .3s var(--ease)}
.read::before{content:"";position:absolute;inset:0;z-index:-1;background:var(--paper);transform:translateX(-101%);transition:transform .45s var(--ease)}
.read:hover::before{transform:none}
.read:active{transform:scale(.94)}
.read i{font-style:normal;display:inline-block}
.post:hover .read i{animation:nudge 1.2s ease-in-out infinite}
.post .read:hover i{animation:slidein .5s var(--ease)}
.posts .note{grid-column:1/-1;display:flex;flex-direction:column;align-items:flex-start;gap:20px;background:var(--ink);color:var(--paper);border-radius:28px;padding:40px}
.note .read{position:static}
.skel{display:none;min-height:380px;gap:14px}
.js .skel{display:flex}
.skel:hover{transform:none}
.skel span{display:block;height:14px;border-radius:7px;background:linear-gradient(90deg,rgba(244,244,236,.08) 25%,rgba(244,244,236,.22) 50%,rgba(244,244,236,.08) 75%);background-size:200% 100%;animation:shimmer 1.4s linear infinite}
.skel span:nth-child(1){width:28%}
.skel span:nth-child(2){width:88%;height:26px;margin-bottom:12px}
.skel span:nth-child(5){width:60%}
@keyframes rise{from{opacity:0;transform:translateY(24px)}}
@keyframes nudge{50%{transform:translateX(5px)}}
@keyframes slidein{from{transform:translateX(-16px);opacity:0}}
@keyframes shimmer{to{background-position:-200% 0}}
.site-foot{padding:28px 0}
.site-foot .foot{margin:0;padding:0;border:0}
.site-foot a{transition:color .2s}
.site-foot a:hover{color:var(--lime)}
@media (max-width:1000px){.posts{grid-template-columns:1fr}}

/* career timeline */
.tl-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap}
.tl-head h2{max-width:16em}
.tl-head .lead{margin-top:16px}
.tl-all{font:inherit;font-weight:600;color:inherit;background:none;border:2px solid currentColor;border-radius:999px;padding:12px 24px;cursor:pointer;transition:background .25s,color .25s,border-color .25s}
.tl-all:hover{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.tl-rail{position:relative;padding-left:44px;margin-top:56px}
.tl-rail::before,.tl-fill{content:"";position:absolute;left:11px;top:0;width:2px;background:rgba(244,244,236,.2)}
.tl-rail::before{bottom:0}
.tl-fill{height:0;background:var(--lime);transition:height .15s linear}
.tl-it{position:relative}
.tl-it::before{content:"";position:absolute;left:-44px;top:36px;width:24px;height:24px;border-radius:50%;background:var(--ink);border:2px solid var(--paper);transition:background .3s,border-color .3s,transform .3s}
.tl-it.on::before{background:var(--lime);border-color:var(--lime);transform:scale(1.2)}
.tl-it>button{display:grid;grid-template-columns:auto 1fr 56px;gap:6px 32px;align-items:center;width:100%;padding:24px 0;background:none;border:0;border-bottom:1px solid rgba(244,244,236,.2);font:inherit;color:inherit;text-align:left;cursor:pointer}
.tl-yr{font-size:clamp(2.6rem,7vw,4.6rem);font-weight:800;letter-spacing:-.04em;line-height:1;min-width:2.5em}
.tl-tt b{display:block;font-size:1.35rem;line-height:1.25;font-weight:700}
.tl-tt small{margin:4px 0 0}
.tl-ar{width:56px;height:56px;border:2px solid currentColor;border-radius:50%;display:grid;place-items:center;font-size:1.4rem;transition:transform .45s var(--ease),background .25s,color .25s,border-color .25s}
.tl-it>button:hover .tl-ar,.tl-it.open .tl-ar{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.tl-it.open .tl-ar{transform:rotate(90deg)}
.tl-pn{display:grid;grid-template-rows:0fr;transition:grid-template-rows .45s var(--ease)}
.tl-pn>div{overflow:hidden;visibility:hidden;transition:visibility 0s .45s}
.tl-it.open .tl-pn{grid-template-rows:1fr}
.tl-it.open .tl-pn>div{visibility:visible;transition-delay:0s}
.tl-in{padding:22px 0 30px;max-width:36em}
.tl-ln{font-weight:700;color:var(--ink);background:var(--lime);padding:.05em .35em;line-height:1.75;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.tl-end{margin-top:88px}
.tl-big{font-size:clamp(1.8rem,4.4vw,3.2rem);font-weight:800;letter-spacing:-.03em;line-height:1.08;max-width:17em}
.tl-end p{margin-top:24px;opacity:.82}
@media (max-width:640px){.tl-it>button{grid-template-columns:1fr 56px}.tl-yr{grid-column:1/-1}.tl-rail{padding-left:40px}.tl-it::before{left:-40px}}