:root{--bg:#000;--fg:#f5f5f7;--g:#86868b;--g2:#6e6e73;--surface:#111113;--line:rgba(255,255,255,.08);
--sans:"Geist",-apple-system,system-ui,sans-serif;--ease:cubic-bezier(.2,.8,.2,1);color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth}html,body{overflow-x:clip}
body{margin:0;background:var(--bg);color:var(--g);font:17px/1.5 var(--sans);-webkit-font-smoothing:antialiased;letter-spacing:-.011em}
a{color:inherit;text-decoration:none}p,h1,h2,h3,figure,ul,ol{margin:0}ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid #ffffff;outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;z-index:9;background:#fff;color:#000;padding:8px 12px}
.wrap{max-width:1080px;margin:0 auto;padding:0 28px}
.center{text-align:center}
code{font-family:inherit;color:var(--fg)}
h1,h2,h3{color:var(--fg);font-weight:600;letter-spacing:-.045em}
h1{font-size:clamp(3.4rem,10vw,8.5rem);line-height:.95}
h2{font-size:clamp(2.4rem,6.2vw,5rem);line-height:1.02}
.grey{color:var(--g2)}
.sub{font-size:clamp(1.15rem,2vw,1.5rem);line-height:1.4;max-width:36ch;margin:28px auto 0;color:var(--g)}

/* nav */
.nav{position:sticky;top:0;z-index:10;background:rgba(0,0,0,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px)}
.nav-in{display:flex;justify-content:space-between;align-items:center;height:52px}
.brand{display:flex;align-items:center;gap:9px;color:var(--fg);font-weight:500;font-size:15px}
.mark{display:block;width:26px;height:26px;border-radius:6px}
.logo{font-weight:700;font-size:11px;color:#000;background:var(--fg);padding:3px 5px;border-radius:5px;letter-spacing:0}
nav{display:flex;gap:30px;align-items:center;font-size:13px;color:#a1a1a6}nav a:not(.btn):hover{color:var(--fg)}
.btn{display:inline-flex;align-items:center;height:48px;padding:0 26px;font:500 17px var(--sans);color:#000;background:var(--fg);border-radius:999px;transition:background .2s var(--ease),transform .2s var(--ease)}
.btn:hover{background:#fff}.btn:active{transform:scale(.98)}
.btn.sm{height:28px;padding:0 13px;font-size:13px}
.link{color:var(--fg);font-size:17px}.link:hover{text-decoration:underline}
.cta{display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:center;margin-top:40px}

/* hero */
.hero{padding-top:120px}
.hero-visual{margin-top:96px;max-width:860px}
.window{background:var(--surface);border-radius:22px;box-shadow:0 40px 120px -30px rgba(0,0,0,.9),0 0 0 1px rgba(255,255,255,.06)}
.win-bar{display:flex;gap:8px;padding:16px 18px 0}.win-bar i{width:12px;height:12px;border-radius:50%;background:#2c2c2e}
.chat-body{display:flex;flex-direction:column;gap:26px;padding:28px 40px 44px;min-height:310px}
.caption{margin-top:18px;text-align:center;font-size:13px;color:var(--g2)}
.msg{max-width:80%;font-size:17px;line-height:1.45;color:var(--fg);opacity:0;transform:translateY(8px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.msg.in{opacity:1;transform:none}
.msg.user{align-self:flex-end;margin-bottom:4px;background:#2c2c2e;padding:12px 18px;border-radius:20px 20px 6px 20px}
.msg .who{display:block;font-size:13px;font-weight:500;color:var(--g);margin-bottom:2px}
.msg.soon p{color:var(--g2)}.msg .soon{display:block;font-size:13px;color:var(--g2);margin-top:2px}
.empty{margin:auto;text-align:center;display:flex;flex-direction:column;gap:4px}.empty b{color:var(--fg);font-weight:500;font-size:20px;letter-spacing:-.02em}.empty span{font-size:14px;color:var(--g2)}

/* sections */
.screen{padding-top:200px}
.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:48px;margin-top:80px;text-align:left}
.trio p{font-size:17px}.trio b{color:var(--fg);font-weight:500;display:block;margin-bottom:4px}

/* engines */
.tabs{display:flex;justify-content:center;gap:36px;margin:64px 0 72px}
.tabs button{font:500 19px var(--sans);letter-spacing:-.02em;color:var(--g2);background:none;border:0;padding:6px 0;cursor:pointer;position:relative;transition:color .2s var(--ease)}
.tabs button:hover{color:var(--g)}.tabs button[aria-selected=true]{color:var(--fg)}
.tabs button[aria-selected=true]:after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:var(--fg)}
.panel{max-width:860px;margin:0 auto;animation:fade .4s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.p-role{font-size:17px;color:var(--fg);font-weight:500}.p-role span{color:var(--g2);font-weight:400}
.p-line{font-size:clamp(2rem,4.4vw,3.4rem);line-height:1.06;margin:14px 0 22px;max-width:18ch}
.p-what{font-size:19px;max-width:44ch}
.feats{margin-top:56px}
.feats li{display:grid;grid-template-columns:220px 1fr auto;gap:24px;align-items:baseline;padding:20px 0;border-top:1px solid var(--line)}
.feats b{color:var(--fg);font-weight:500;font-size:19px;letter-spacing:-.02em}
.f-s{font-size:14px;color:var(--g2)}.f-s.on{color:var(--fg)}

/* how */
.how-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:72px;margin-top:96px;align-items:start}
.steps button{all:unset;box-sizing:border-box;display:flex;gap:20px;width:100%;padding:22px 0;cursor:pointer;opacity:.4;transition:opacity .3s var(--ease)}
.steps button:hover,.steps button.on{opacity:1}
.steps button:focus-visible{outline:2px solid #ffffff;outline-offset:4px;border-radius:8px}
.n{flex:none;width:20px;font-size:17px;font-weight:500;color:var(--g2)}.steps button.on .n{color:var(--fg)}
.s-body{display:flex;flex-direction:column;gap:6px}
.s-body b{color:var(--fg);font-weight:600;font-size:22px;letter-spacing:-.03em}
.s-copy{font-size:16px;line-height:1.45;max-width:40ch}
.s-status{font-size:13px;color:var(--g2)}
.how-sticky{position:sticky;top:110px}
.how-sticky .chat-body{min-height:420px;padding:24px 28px 32px}
.how-sticky .msg{font-size:16px}

/* roadmap */
.roadmap{display:grid;grid-template-columns:repeat(3,1fr);gap:48px;margin-top:96px}
.rm-col h3{font-size:15px;font-weight:500;letter-spacing:-.01em;color:var(--g2);padding-bottom:18px;border-bottom:1px solid var(--line)}
.rm-col.now h3{color:var(--fg)}
.rm-col ul{margin-top:20px;display:grid;gap:14px}
.rm-col li{color:var(--fg);font-size:19px;letter-spacing:-.02em;font-weight:500}.rm-col li span{display:block;font-size:13px;font-weight:400;color:var(--g2);letter-spacing:0}

#community{padding-bottom:200px}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:22px;padding-bottom:40px;border-top:1px solid var(--line);font-size:12px;color:var(--g2)}

.reveal{opacity:0;transform:translateY(8px);transition:opacity .6s var(--ease),transform .6s var(--ease)}.reveal.in{opacity:1;transform:none}

@media(max-width:900px){.feats li{grid-template-columns:1fr auto;gap:4px 16px}.feats .f-d{grid-column:1/-1;grid-row:2}}
@media(max-width:760px){
.wrap{padding:0 22px}.hide-sm{display:none}
.hero{padding-top:72px}.hero-visual{margin-top:64px}.screen{padding-top:128px}
.chat-body{padding:20px 20px 28px;min-height:300px;gap:18px}.msg{font-size:15px;max-width:88%}
.trio,.roadmap{grid-template-columns:1fr;gap:32px;margin-top:56px}
.tabs{gap:24px;margin:44px 0 48px}.tabs button{font-size:17px}
.how-grid{grid-template-columns:1fr;gap:20px;margin-top:56px}
.how-sticky{position:sticky;top:60px;z-index:2;order:-1;background:var(--bg);padding-bottom:8px}
.how-sticky .chat-body{min-height:210px;max-height:210px;overflow:auto;padding:14px 18px 18px;gap:14px}.how-sticky .msg{font-size:14px}.how-sticky .caption{display:none}
.steps button{opacity:.45;padding:18px 0}.s-body b{font-size:20px}
#community{padding-bottom:128px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.reveal,.msg{opacity:1;transform:none}}