:root{
  --bg:#fff;--fg:#0d0d0d;--mute:#6b6b76;--line:#e7e7ea;--card:#f5f5f6;--acc:#10a37f;
  --ease:cubic-bezier(.16,1,.3,1);
}
@media (prefers-color-scheme:dark){
  :root{--bg:#000;--fg:#f4f4f6;--mute:#9b9ba8;--line:#232327;--card:#101012}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 "Söhne",-apple-system,"Segoe UI",Inter,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
::selection{background:var(--fg);color:var(--bg)}

.progress{position:fixed;top:0;left:0;height:2px;width:100%;background:var(--fg);transform-origin:0 50%;transform:scaleX(0);z-index:30}

.notice{background:var(--fg);color:var(--bg);text-align:center;font-size:13px;padding:8px 16px;line-height:1.4}

/* header */
header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid transparent;transition:border-color .4s,transform .5s var(--ease)}
header.scrolled{border-color:var(--line)}
header.hide{transform:translateY(-100%)}
.nav{max-width:1240px;margin:auto;padding:0 24px;height:62px;display:flex;align-items:center;gap:26px}
.nav a{white-space:nowrap}
.logo{font-size:21px;font-weight:600;letter-spacing:-.04em;text-decoration:none}
.pill{font-size:11px;border:1px solid var(--line);color:var(--mute);border-radius:99px;padding:2px 9px;margin-left:-14px;text-transform:uppercase;letter-spacing:.08em}
.nav ul{display:flex;gap:20px;list-style:none;padding:0;margin:0;font-size:14px}
.nav ul a{text-decoration:none;color:var(--mute);position:relative;transition:color .25s}
.nav ul a:after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:100% 50%;transition:transform .4s var(--ease)}
.nav ul a:hover{color:var(--fg)}
.nav ul a:hover:after{transform:scaleX(1);transform-origin:0 50%}
.nav .r{margin-left:auto;display:flex;gap:10px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--fg);color:var(--bg);border:1px solid var(--fg);border-radius:999px;padding:9px 18px;font:inherit;font-size:14.5px;font-weight:500;cursor:pointer;text-decoration:none;transition:transform .35s var(--ease),opacity .25s,background .3s,color .3s,border-color .3s}
.btn:hover{transform:translateY(-1px);opacity:.86}
.btn:active{transform:scale(.97)}
.btn.ghost{background:transparent;color:var(--fg);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--fg);opacity:1}
.btn.lg{padding:13px 24px;font-size:15.5px}
.btn.full{width:100%}
.btn .arrow{display:inline-block;transition:transform .4s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn.done{background:var(--acc);border-color:var(--acc);color:#fff}
.btn[disabled]{pointer-events:none}

.wrap{max-width:1240px;margin:auto;padding:0 24px}
.col{max-width:680px;margin-inline:auto}
.wide{max-width:1040px;margin-inline:auto}

/* hero text */
.top{text-align:center}
.crumb{margin-top:84px;font-size:14px;color:var(--mute)}
.crumb b{color:var(--fg);font-weight:500}
h1{font-size:clamp(40px,6vw,76px);line-height:1.03;letter-spacing:-.04em;font-weight:500;margin:20px auto 18px;max-width:920px}
h1 .w{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.08em}
h1 .w span{display:inline-block;transform:translateY(105%);animation:rise 1s var(--ease) forwards;animation-delay:calc(var(--i)*70ms + .1s)}
@keyframes rise{to{transform:none}}
.sub{font-size:20px;color:var(--mute);margin:0 auto 28px;max-width:560px}
.cta{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.fade{opacity:0;transform:translateY(14px);animation:fadeup 1s var(--ease) forwards;animation-delay:var(--d,0s)}
@keyframes fadeup{to{opacity:1;transform:none}}

/* hero art (gradient unchanged) */
.hero{margin:60px 0 0;border-radius:14px;aspect-ratio:21/9;min-height:420px;position:relative;overflow:hidden;background:#e9f1ee;isolation:isolate;text-align:left}
.blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.9;z-index:-1;will-change:transform}
.b1{width:55%;height:90%;left:-10%;top:-20%;background:#6fe0bd;animation:drift1 16s ease-in-out infinite alternate}
.b2{width:50%;height:90%;right:-8%;top:-30%;background:#8fb0ff;animation:drift2 19s ease-in-out infinite alternate}
.b3{width:60%;height:80%;left:25%;bottom:-45%;background:#ffcf9c;animation:drift3 22s ease-in-out infinite alternate}
@keyframes drift1{to{transform:translate(18%,22%) scale(1.15)}}
@keyframes drift2{to{transform:translate(-22%,26%) scale(.9)}}
@keyframes drift3{to{transform:translate(-14%,-26%) scale(1.2)}}

/* hero: frosted card with memory slots */
.glass{position:absolute;top:50%;left:50%;width:min(86%,500px);translate:-50% -50%;color:#0d0d0d;
  background:rgba(255,255,255,.58);backdrop-filter:blur(28px) saturate(1.5);-webkit-backdrop-filter:blur(28px) saturate(1.5);
  border:1px solid rgba(255,255,255,.75);border-radius:22px;padding:20px;
  box-shadow:0 30px 70px rgba(20,40,60,.18),inset 0 1px 0 rgba(255,255,255,.8);
  transition:transform .3s ease-out;will-change:transform}
.ghead{display:flex;justify-content:space-between;align-items:center;font-size:13.5px;font-weight:500;margin-bottom:14px}
.gstate{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:500;background:rgba(255,255,255,.7);border-radius:99px;padding:4px 11px;transition:background .5s,color .5s}
.gstate i{width:6px;height:6px;border-radius:50%;background:#f5a524;transition:background .4s}
.gstate b{font-weight:500}
.gstate.busy i{animation:blink 1s ease-in-out infinite}
.gstate.ok{background:#0d0d0d;color:#fff}
.gstate.ok i{background:#5ee9a5}
.gstate.bad i{background:#ef4444}
.slot{position:relative;height:38px;border-radius:10px;border:1px dashed rgba(13,13,13,.2);margin-bottom:8px;overflow:hidden;display:flex;align-items:center;justify-content:space-between;padding:0 13px;font:11.5px Consolas,ui-monospace,monospace;color:rgba(13,13,13,.45)}
.slot .held{color:#b45309}
.stick{position:absolute;inset:-1px;border-radius:10px;display:flex;align-items:center;justify-content:space-between;padding:0 13px;color:#eef0f3;
  background:linear-gradient(180deg,#2a2e36,#15181d);transform:translateX(-103%);
  transition:transform .95s cubic-bezier(.34,1.35,.5,1)}
.stick:after{content:"";position:absolute;left:12px;right:12px;bottom:0;height:4px;background:repeating-linear-gradient(90deg,#e0b962 0 5px,transparent 5px 8px);opacity:.9}
.stick span{display:inline-flex;align-items:center;gap:8px}
.stick span:last-child{color:#7ee0c3;opacity:0;transition:opacity .5s .5s}
.led{width:6px;height:6px;border-radius:50%;background:#3a3f48;transition:background .3s .7s,box-shadow .3s .7s}
.stick.in{transform:none}
.stick.in span:last-child{opacity:1}
.stick.in .led{background:#5ee9a5;box-shadow:0 0 10px #5ee9a5}
.stick.half{transform:translateX(-48%);transition:transform 1.1s cubic-bezier(.3,.9,.4,1)}
.stick.half span:last-child{opacity:1;color:#ffb86b;transition-delay:0s}
.stick.tug{animation:tug .5s ease-in-out 2}
@keyframes tug{0%,100%{transform:translateX(-48%)}50%{transform:translateX(-42%)}}
.stick.nope{transform:translateX(-103%);transition:transform .45s cubic-bezier(.6,0,.9,.2)}
.stick.out{transform:translateX(103%);transition:transform .7s cubic-bezier(.6,0,.8,.3)}
.gfoot{margin-top:16px}
.gfoot>div:first-child{display:flex;align-items:baseline;gap:10px}
.gfoot strong{font-size:32px;font-weight:500;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.gfoot span{font-size:13px;color:rgba(13,13,13,.55)}
.gfoot strong span{font-size:inherit;color:inherit}
.gbar{height:4px;border-radius:99px;background:rgba(13,13,13,.1);margin-top:10px;overflow:hidden}
.gbar b{display:block;height:100%;width:0;border-radius:99px;background:#0d0d0d;transition:width 1s var(--ease)}
@keyframes blink{50%{opacity:.3}}

/* article */
main{padding-top:88px}
main section{scroll-margin-top:90px}
h2{font-size:34px;letter-spacing:-.035em;line-height:1.15;font-weight:500;margin:0 0 22px}
main section,main figure{margin-top:104px}
#overview{margin-top:0}
main p{margin:0 0 20px;font-size:18px;line-height:1.7}
.lead{font-size:24px!important;line-height:1.42!important;letter-spacing:-.02em}
.small{font-size:13.5px!important;color:var(--mute);margin:6px 0 0!important}
.center{text-align:center;margin-top:14px!important}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;justify-content:space-between}
.row h2{margin:0}

.reveal{opacity:0;transform:translateY(28px);transition:opacity 1s var(--ease),transform 1s var(--ease);transition-delay:var(--rd,0s)}
.reveal.in{opacity:1;transform:none}

/* quote */
.quote{margin-bottom:0;text-align:center}
.quote blockquote{margin:0;font-size:clamp(26px,3.4vw,36px);line-height:1.22;letter-spacing:-.03em;font-weight:500}
.quote figcaption{display:inline-flex;align-items:center;gap:12px;margin-top:26px;font-size:14px;color:var(--mute);text-align:left;line-height:1.4}
.quote b{color:var(--fg);font-weight:500}
.av{width:40px;height:40px;border-radius:50%;background:conic-gradient(from 200deg,#6fe0bd,#8fb0ff,#ffcf9c,#6fe0bd);flex:none}

/* note */
.note{background:var(--card);border-radius:20px;padding:40px}
.note p:first-child{color:var(--mute)}
.sig{font-family:"Brush Script MT","Segoe Script",cursive;font-size:38px;line-height:1.2;margin-top:6px}

/* steps */
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:6px}
.step{background:var(--card);border-radius:18px;padding:24px 22px 26px;min-height:230px;display:flex;flex-direction:column;transition:opacity 1s var(--ease),transform .7s var(--ease),background .4s}
.step.in:hover{transform:translateY(-5px)}
.step span{font-size:13px;color:var(--mute);font-variant-numeric:tabular-nums}
.step h3{margin:auto 0 8px;font-size:19px;font-weight:500;letter-spacing:-.02em;line-height:1.25}
.step p{font-size:14.5px;line-height:1.5;color:var(--mute);margin:0}
.step:nth-child(2){--rd:.08s}.step:nth-child(3){--rd:.16s}.step:nth-child(4){--rd:.24s}

/* progress */
.live{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--mute);border:1px solid var(--line);border-radius:99px;padding:5px 12px}
.live i{width:7px;height:7px;border-radius:50%;background:var(--acc);animation:ping 1.8s ease-out infinite}
@keyframes ping{0%{box-shadow:0 0 0 0 var(--acc)}100%{box-shadow:0 0 0 9px transparent}}
.bigstats{display:grid;grid-template-columns:repeat(3,1fr);margin-top:34px;border-top:1px solid var(--line)}
.bigstats div{padding:28px 0 30px;border-right:1px solid var(--line);padding-left:28px}
.bigstats div:first-child{padding-left:0}
.bigstats div:last-child{border-right:0}
.bigstats strong{display:block;font-size:clamp(34px,4.6vw,60px);line-height:1.05;letter-spacing:-.045em;font-weight:500;font-variant-numeric:tabular-nums}
.bigstats span{display:block;margin-top:8px;font-size:15px;color:var(--mute)}
.meterrow{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:14px;color:var(--mute);border-top:1px solid var(--line);padding-top:22px}
.meterrow b{color:var(--fg);font-weight:500;font-variant-numeric:tabular-nums}
.meter{height:6px;background:var(--line);border-radius:99px;overflow:hidden;margin-top:14px}
.meter b{display:block;height:100%;width:0;border-radius:99px;background:linear-gradient(90deg,var(--fg),var(--mute),var(--fg));background-size:200% 100%;animation:sheen 3s linear infinite;transition:width 1.8s var(--ease)}
@keyframes sheen{to{background-position:-200% 0}}

/* contribute */
.card{background:var(--card);border-radius:20px;padding:32px}
.amt{font-size:84px;line-height:1;letter-spacing:-.055em;font-weight:500;font-variant-numeric:tabular-nums;margin:22px 0 6px}
.amt small{font-size:22px;letter-spacing:-.02em;color:var(--mute);margin-left:8px;font-weight:400}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:4px;border-radius:99px;margin:22px 0 10px;outline:0;cursor:pointer;background:linear-gradient(90deg,var(--fg) var(--p,12%),var(--line) var(--p,12%))}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;border-radius:50%;background:var(--bg);border:2px solid var(--fg);box-shadow:0 2px 10px rgba(0,0,0,.2);transition:transform .3s var(--ease)}
input[type=range]:hover::-webkit-slider-thumb{transform:scale(1.15)}
input[type=range]:active::-webkit-slider-thumb{transform:scale(1.3)}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--bg);border:2px solid var(--fg)}
.ticks{font-size:12.5px;color:var(--mute);margin-bottom:24px}
#quip{margin:0!important;transition:opacity .25s}
.termwrap{display:grid;grid-template-rows:0fr;transition:grid-template-rows .8s var(--ease)}
.termwrap.open{grid-template-rows:1fr}
.termwrap>div{overflow:hidden}
.term{background:#0b0b0d;color:#5ee9a5;font:13px/1.6 Consolas,ui-monospace,monospace;border-radius:14px;padding:20px;margin:22px 0 0;min-height:216px;white-space:pre-wrap}
.term:after{content:"▍";animation:blink 1s steps(1) infinite}

/* tiers */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:6px}
.tier{position:relative;border:1px solid var(--line);border-radius:20px;padding:28px;transition:opacity 1s var(--ease),transform .7s var(--ease),border-color .3s,box-shadow .5s}
.tier.in:hover{transform:translateY(-5px);box-shadow:0 22px 50px rgba(0,0,0,.08)}
.tier.hot{background:var(--card);border-color:transparent}
.tier:nth-child(2){--rd:.1s}.tier:nth-child(3){--rd:.2s}
.tier h3{margin:0;font-size:20px;font-weight:500;letter-spacing:-.02em}
.tier .p{font-size:56px;line-height:1;letter-spacing:-.05em;font-weight:500;margin:22px 0 10px}
.tier .p small{font-size:16px;letter-spacing:0;color:var(--mute);margin-left:6px;font-weight:400}
.tier p{font-size:15px;color:var(--mute);margin:0 0 22px}
.tier ul{list-style:none;padding:0;margin:24px 0 0;font-size:14.5px}
.tier li{position:relative;padding:6px 0 6px 26px}
.tier li:before{content:"";position:absolute;left:3px;top:11px;width:11px;height:6px;border-left:1.5px solid var(--fg);border-bottom:1.5px solid var(--fg);transform:rotate(-45deg)}
.badge{position:absolute;top:26px;right:24px;font-size:11.5px;background:var(--fg);color:var(--bg);border-radius:99px;padding:3px 10px;font-weight:500}

/* faq */
.faq{border-bottom:1px solid var(--line)}
.faq button{all:unset;box-sizing:border-box;display:flex;justify-content:space-between;align-items:center;gap:20px;width:100%;padding:22px 0;border-top:1px solid var(--line);font-size:18px;font-weight:500;letter-spacing:-.01em;cursor:pointer}
.faq button i{position:relative;width:14px;height:14px;flex:none;transition:transform .5s var(--ease)}
.faq button i:before,.faq button i:after{content:"";position:absolute;inset:6.25px 0;background:currentColor;height:1.5px}
.faq button i:after{transform:rotate(90deg);transition:transform .5s var(--ease)}
.faq button.open i{transform:rotate(180deg)}
.faq button.open i:after{transform:rotate(0)}
.faq .a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .6s var(--ease)}
.faq .a p{overflow:hidden;margin:0;color:var(--mute);font-size:16.5px;opacity:0;transition:opacity .5s,padding .6s var(--ease)}
.faq button.open+.a{grid-template-rows:1fr}
.faq button.open+.a p{opacity:1;padding-bottom:22px}
.author{margin-top:64px;font-size:14px}
.author span{display:block;color:var(--mute);margin-bottom:2px}
.author b{font-weight:500}

/* keep reading */
.more{border-top:1px solid var(--line);padding-top:64px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:30px}
.post{text-decoration:none;display:block}
.post:nth-child(2){--rd:.1s}.post:nth-child(3){--rd:.2s}
.thumb{aspect-ratio:1/1;border-radius:14px;margin-bottom:16px;transition:transform .9s var(--ease),filter .6s;background-size:160% 160%!important;animation:pan 14s ease-in-out infinite alternate}
.post:hover .thumb{transform:scale(.975);filter:saturate(1.25)}
.t1{background:radial-gradient(60% 70% at 20% 20%,#6fe0bd,transparent 70%),radial-gradient(70% 70% at 90% 80%,#ffcf9c,transparent 70%),#cfe0ff}
.t2{background:radial-gradient(60% 70% at 80% 10%,#8fb0ff,transparent 70%),radial-gradient(70% 70% at 10% 90%,#f7b3d2,transparent 70%),#e7e3ff}
.t3{background:radial-gradient(60% 70% at 30% 80%,#ffcf9c,transparent 70%),radial-gradient(70% 70% at 80% 20%,#ff9f8f,transparent 70%),#fff1c9}
@keyframes pan{from{background-position:0 0}to{background-position:100% 100%}}
.post h3{margin:0 0 6px;font-size:19px;font-weight:500;letter-spacing:-.02em;line-height:1.3}
.post span{font-size:13.5px;color:var(--mute)}

footer{margin-top:120px;border-top:1px solid var(--line);padding:60px 0 40px}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:32px}
.cols h4{margin:0 0 12px;font-size:13.5px;font-weight:600}
.cols a{display:block;text-decoration:none;color:var(--mute);font-size:14px;padding:3px 0;transition:color .25s,transform .4s var(--ease)}
.cols a:hover{color:var(--fg);transform:translateX(3px)}
.legal{margin-top:48px;padding-top:22px;border-top:1px solid var(--line);font-size:12.5px;color:var(--mute);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

@media(max-width:1120px){.nav ul{display:none}}
@media(max-width:900px){
  .grid4{grid-template-columns:repeat(2,1fr)}
  .tiers,.cards{grid-template-columns:1fr}
  .thumb{aspect-ratio:16/9}
  main section,main figure{margin-top:80px}
}
@media(max-width:560px){
  .nav .ghost{display:none}.crumb{margin-top:52px}
  .grid4{grid-template-columns:1fr}.step{min-height:0}.step h3{margin-top:28px}
  .bigstats{grid-template-columns:1fr}
  .bigstats div{border-right:0;border-bottom:1px solid var(--line);padding:20px 0}
  .bigstats div:last-child{border-bottom:0}
  .note,.card{padding:24px}.amt{font-size:64px}
}
@media (prefers-reduced-motion:reduce){
  *,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}