/* KAI-Labs. Sibling of kalpanaitech.com: same near-black surfaces and type pairing, ember accent for the lab. */
@font-face{font-family:"Instrument Serif";font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/instrument-serif-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Instrument Serif";font-style:italic;font-weight:400;font-display:swap;src:url(/fonts/instrument-serif-latin-400-italic.woff2) format("woff2")}
@font-face{font-family:"Geist";font-style:normal;font-weight:100 900;font-display:swap;src:url(/fonts/geist-latin-wght-normal.woff2) format("woff2")}
@font-face{font-family:"Geist Mono";font-style:normal;font-weight:100 900;font-display:swap;src:url(/fonts/geist-mono-latin-wght-normal.woff2) format("woff2")}
/* Metric-matched fallbacks so the swap does not move the layout */
@font-face{font-family:"Serif Fallback";src:local("Georgia");size-adjust:75.6%}
@font-face{font-family:"Sans Fallback";src:local("Arial");size-adjust:102.7%}

@font-face{font-family:"Mono Fallback";src:local("Courier New");size-adjust:100%}
:root{
  --bg:#0b0c0f; --surface:#12141a; --raised:#171a22;
  --fg:#f4f5f7; --muted:#a8afbc; --line:rgba(255,255,255,.1); --line-strong:rgba(255,255,255,.22);
  --ember:#ff9a3c; --ember-soft:#ffc48a; --ember-dim:rgba(255,154,60,.14);
  --serif:"Instrument Serif","Serif Fallback",Georgia,serif;
  --sans:"Geist","Sans Fallback",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"Geist Mono","Mono Fallback",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,1,.36,1);
  --gutter:24px; --header:64px;
}
[hidden]{display:none!important}
*,*::before,*::after{box-sizing:border-box}
html{color-scheme:dark;scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:clip}
body{margin:0;background:var(--bg);color:var(--fg);font:400 1.0625rem/1.65 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:clip}
img,svg,canvas{display:block;max-width:100%}
h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.08;letter-spacing:-.01em;margin:0;text-wrap:balance}
h1 em,h2 em{font-style:italic;color:var(--ember)}
h3{font-size:1.5rem;line-height:1.2}
p{margin:0 0 1em}
a{color:var(--fg);text-decoration-color:var(--line-strong);text-underline-offset:.2em}
a:hover{text-decoration-color:var(--ember)}
ul,ol{margin:0;padding:0;list-style:none}
[id]{scroll-margin-top:calc(var(--header) + 16px)}
:focus-visible{outline:2px solid var(--ember);outline-offset:3px;border-radius:4px}
.mono{font-family:var(--mono);font-size:.78rem;letter-spacing:.06em}
.small{font-size:.9rem;color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--fg);color:var(--bg);padding:12px 16px;border-radius:8px;text-decoration:none}
.skip:focus{top:12px}
.wrap{max-width:1200px;margin:0 auto;padding-inline:var(--gutter)}
.ph{font-family:var(--mono);font-size:.82em;color:var(--ember-soft);background:var(--ember-dim);border:1px dashed rgba(255,154,60,.55);border-radius:4px;padding:.05em .4em;font-style:normal}
blockquote.ph{display:block;margin:0;padding:.8em 1em;font-size:.95rem}

/* ---------- header / menu ---------- */
.site-header{position:sticky;top:0;z-index:50;height:var(--header);background:rgba(11,12,15,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:24px;height:100%}
.brand{display:flex;align-items:baseline;gap:10px;text-decoration:none;min-height:44px;align-items:center}
.brand-name{font-family:var(--serif);font-size:1.6rem;line-height:1}
.brand-by{color:var(--muted);font-size:.68rem}
.nav{display:none;margin-left:auto;gap:4px}
.nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 12px;color:var(--muted);text-decoration:none;font-size:.95rem;transition:color .3s var(--ease)}
.nav a:hover{color:var(--fg)}
.pill{display:none;align-items:center;min-height:44px;padding:0 20px;border:1px solid var(--ember);border-radius:999px;color:var(--fg);text-decoration:none;font-size:.95rem;transition:background-color .4s var(--ease)}
.pill:hover{background:var(--ember-dim)}
.menu-btn{margin-left:auto;width:44px;height:44px;border:1px solid var(--line-strong);border-radius:999px;background:none;color:var(--fg);cursor:pointer;display:grid;place-items:center}
.menu-icon{position:relative;width:18px;height:10px}
.menu-icon i{position:absolute;left:0;width:18px;height:1.5px;background:currentColor;transition:transform .5s var(--ease)}
.menu-icon i:first-child{top:0}.menu-icon i:last-child{bottom:0}
.menu-btn[aria-expanded=true] .menu-icon i:first-child{transform:translateY(4.25px) rotate(45deg)}
.menu-btn[aria-expanded=true] .menu-icon i:last-child{transform:translateY(-4.25px) rotate(-45deg)}
.menu{position:fixed;inset:var(--header) 0 0 0;z-index:49;background:var(--bg);padding:32px var(--gutter);overflow:auto}
.menu[hidden]{display:none}
.menu nav{display:flex;flex-direction:column;gap:4px}
.menu nav a{font-family:var(--serif);font-size:2.2rem;line-height:1.2;padding:10px 0;text-decoration:none;border-bottom:1px solid var(--line);min-height:56px}
.menu nav a.pill{display:inline-flex;font-family:var(--sans);font-size:1rem;margin-top:24px;align-self:flex-start;border-bottom:1px solid var(--ember);padding:0 24px;min-height:48px}
body.menu-open{overflow:hidden}

/* ---------- buttons ---------- */
.btn,.btn-quiet{display:inline-flex;align-items:center;gap:10px;min-height:48px;padding:0 22px;border-radius:999px;font:500 1rem/1.2 var(--sans);cursor:pointer;text-decoration:none;transition:background-color .4s var(--ease),border-color .4s var(--ease)}
.btn{background:transparent;color:var(--fg);border:1px solid var(--ember)}
.btn:hover{background:var(--ember-dim)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn-quiet{background:none;border:1px solid var(--line-strong);color:var(--fg)}
.btn-quiet:hover{border-color:var(--fg)}
.link-quiet{display:inline-flex;align-items:center;min-height:44px;color:var(--muted)}
.link-quiet:hover{color:var(--fg)}
.cta-row{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;margin-top:28px}

/* ---------- sections ---------- */
.sec{padding:96px 0}
.sec-alt{background:var(--surface);border-block:1px solid var(--line)}
.sec h2{font-size:clamp(2.1rem,4.4vw,3.4rem);max-width:18ch;margin-bottom:.5em}
.sec-label{display:flex;align-items:center;gap:14px;color:var(--muted);margin-bottom:22px;max-width:520px}
.sec-label span{color:var(--ember)}
.sec-label::after{content:"";flex:1;height:1px;background:repeating-linear-gradient(90deg,var(--line-strong) 0 1px,transparent 1px 8px)}
.lede{font-size:1.2rem;color:var(--muted);max-width:56ch}
.grid-12{display:grid;gap:40px}
.note{margin-top:32px;padding-left:16px;border-left:1px solid var(--ember);color:var(--muted);max-width:60ch}

/* ---------- hero ---------- */
.hero-track{position:relative}
.hero-pin{padding:48px 0 72px}
.hero-grid{display:grid;gap:40px}
.eyebrow{color:var(--ember-soft);margin-bottom:24px}
.hero-copy h1{font-size:clamp(2.6rem,7.4vw,4.4rem);line-height:1.04}
.hero-copy .lede{margin-top:24px}
.micro{color:var(--muted);margin:20px 0 0}
.hero-visual{position:relative}
.stage{position:relative;aspect-ratio:5/4;width:100%;border:1px solid var(--line);border-radius:16px;background:radial-gradient(120% 90% at 50% 40%,#141720 0%,var(--bg) 100%);overflow:hidden}
.stage::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 40px),repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 40px)}
.poster,#hero-canvas{position:absolute;inset:0;width:100%;height:100%}
#hero-canvas{opacity:0;transition:opacity .8s var(--ease)}
.stage.live #hero-canvas{opacity:1}
.stage.live .poster{opacity:0;transition:opacity .8s var(--ease)}
.readout{display:flex;align-items:center;gap:10px;margin:12px 4px 0;color:var(--muted)}
.readout .dot{width:7px;height:7px;border-radius:50%;background:var(--ember)}

/* ---------- cards, lists ---------- */
.cards{display:grid;gap:16px;margin-top:40px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:26px}
.card .idx{color:var(--ember);display:block;margin-bottom:28px}
.card h3{margin-bottom:10px}
.card p{margin:0;color:var(--muted)}

.check-intro h2{max-width:14ch}
.check-panel{background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:28px}
.check-top{display:flex;align-items:center;gap:16px;margin-bottom:24px}
.check-top p{margin:0;color:var(--muted);min-width:3.5em}
.progress{flex:1;height:2px;background:var(--line-strong);overflow:hidden}
.progress span{display:block;height:100%;width:100%;background:var(--ember);transform-origin:left;transform:scaleX(.1667);transition:transform .7s var(--ease)}
.q{border:0;padding:0;margin:0;min-width:0}
.q:focus{outline:none}
.q legend{padding:0;margin-bottom:20px;display:block}
.q-count{display:block;color:var(--muted);margin-bottom:8px}
.q-text{display:block;font-family:var(--serif);font-size:1.7rem;line-height:1.2}
.opt{display:flex;align-items:center;gap:14px;min-height:52px;padding:10px 16px;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;cursor:pointer;transition:border-color .3s var(--ease),background-color .3s var(--ease)}
.opt:hover{border-color:var(--line-strong)}
.opt:has(input:checked){border-color:var(--ember);background:var(--ember-dim)}
.opt:has(input:focus-visible){outline:2px solid var(--ember);outline-offset:3px}
.opt input{appearance:none;flex:none;width:20px;height:20px;border:1.5px solid var(--muted);border-radius:50%;margin:0;display:grid;place-content:center}
.opt input::before{content:"";width:10px;height:10px;border-radius:50%;background:var(--ember);transform:scale(0);transition:transform .3s var(--ease)}
.opt input:checked{border-color:var(--ember)}
.opt input:checked::before{transform:scale(1)}
.opt input:focus-visible{outline:none}
.check-nav{display:flex;gap:12px;margin-top:20px}
.err{color:#ffb4a0;font-size:.92rem;margin:8px 0 0}
.err[hidden]{display:none}
.result-stage{color:var(--ember-soft);margin-bottom:10px}
.result-title{font-size:2.4rem;margin-bottom:12px}
.result-title:focus{outline:none}
.steps{counter-reset:s;margin:20px 0}
.steps li{counter-increment:s;position:relative;padding:12px 0 12px 2.6em;border-top:1px solid var(--line)}
.steps li::before{content:counter(s,decimal-leading-zero);font-family:var(--mono);font-size:.78rem;color:var(--ember);position:absolute;left:0;top:1.05em}
.steps.big li{padding:16px 0 16px 2.6em}.steps.big li::before{top:1.5em}

.stages{margin-top:40px;border-top:1px solid var(--line)}
.stage-item{display:grid;gap:14px;padding:32px 0;border-bottom:1px solid var(--line)}
.stage-n{color:var(--ember)}
.stage-item h3{font-size:2rem;margin-bottom:8px}
.stage-item p{margin:0;color:var(--muted)}
.label{color:var(--muted);text-transform:uppercase;margin:0 0 6px}
.dur{color:var(--muted)}
.gets p:last-child{color:var(--fg)}

.deliver{display:grid;gap:16px;margin-top:40px}
.deliver li{border-top:1px solid var(--line-strong);padding-top:18px}
.deliver h3{font-size:1.45rem;margin-bottom:8px}
.deliver p{color:var(--muted)}
.tag{margin:10px 0 0;display:inline-block}

.two{display:grid;gap:16px;margin-top:40px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:28px}
.panel h3{margin-bottom:16px}
.ticks li,.crosses li{position:relative;padding:10px 0 10px 28px;border-top:1px solid var(--line);color:var(--muted)}
.ticks li::before,.crosses li::before{position:absolute;left:0;top:10px;font-family:var(--mono)}
.ticks li::before{content:"+";color:var(--ember)}
.crosses li::before{content:"\2013";color:var(--muted)}

.price{background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:28px;align-self:start}
.price-big{font-family:var(--serif);font-size:2.2rem;line-height:1.2;margin:0 0 24px}
.plain{margin:0 0 20px}
.plain li{padding:8px 0;border-top:1px solid var(--line)}

.commit{display:grid;gap:16px;margin:40px 0}
.commit li{border:1px solid var(--line);border-radius:14px;padding:22px;background:var(--surface)}
.commit h3{font-size:1.35rem;margin-bottom:6px}
.commit p{color:var(--muted)}
.proof-row{display:grid;gap:16px}
.reserved{border:1px dashed var(--line-strong);border-radius:14px;padding:26px;min-height:200px}
.founder{margin:0;border:1px solid var(--line);border-radius:14px;padding:26px}

.faq details{border-top:1px solid var(--line-strong)}
.faq details:last-child{border-bottom:1px solid var(--line-strong)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:60px;padding:14px 0;font-family:var(--serif);font-size:1.45rem;line-height:1.25}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);color:var(--ember);font-size:1.2rem;transition:transform .5s var(--ease);flex:none}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .ans{padding:0 0 18px;color:var(--muted);max-width:62ch}
.faq .ans p{margin:0}

.reach{margin-top:28px}
.reach li{display:flex;flex-direction:column;gap:4px;padding:14px 0;border-top:1px solid var(--line)}
.form{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:28px;display:grid;gap:18px}
.field label{display:block;margin-bottom:6px;font-size:.95rem}
.opt-note{color:var(--muted)}
.field input[type=text],.field input[type=email],.field select,.field textarea{width:100%;min-height:48px;padding:12px 14px;border-radius:10px;border:1px solid var(--line-strong);background:var(--bg);color:var(--fg);font:inherit}
.field textarea{resize:vertical;min-height:110px}
.field [aria-invalid=true]{border-color:#ffb4a0}
.field input:focus-visible,.field select:focus-visible,.field textarea:focus-visible{outline:2px solid var(--ember);outline-offset:2px}
.check-field{display:grid;grid-template-columns:24px 1fr;gap:4px 12px;align-items:start}
.check-field input{width:24px;height:24px;margin:2px 0 0;accent-color:var(--ember)}
.check-field label{margin:0}
.check-field .err{grid-column:2}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.status{margin:0;min-height:1.5em}
.status.ok{color:#9be3b4}
.status.bad{color:#ffb4a0}
.status.info{color:var(--ember-soft)}

.site-footer{border-top:1px solid var(--line);padding:48px 0 56px;background:var(--surface)}
.foot-top{display:grid;gap:8px;margin-bottom:20px}
.foot-top p{margin:0}

/* cookie banner (only built when GA4_ID is set) */
.consent{position:fixed;left:12px;right:12px;bottom:12px;z-index:60;max-width:520px;background:var(--raised);border:1px solid var(--line-strong);border-radius:14px;padding:18px}
.consent p{margin:0 0 12px;font-size:.95rem}
.consent .row{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- reveal (only when JS is on) ---------- */
.js .rv{opacity:0;transform:translateY(16px);transition:opacity .8s var(--ease) var(--d,0s),transform .8s var(--ease) var(--d,0s)}
.js .rv.in{opacity:1;transform:none}

/* ---------- breakpoints ---------- */
@media (min-width:768px){
  :root{--gutter:40px}
  .nav,.pill{display:inline-flex}
  .menu-btn,.menu{display:none!important}
  .cards-4{grid-template-columns:repeat(2,1fr)}
  .deliver{grid-template-columns:repeat(2,1fr);column-gap:32px}
  .two{grid-template-columns:repeat(2,1fr)}
  .commit{grid-template-columns:repeat(2,1fr)}
  .proof-row{grid-template-columns:1fr 1fr}
  .stage-item{grid-template-columns:3.5rem 1.3fr 1fr 12rem;align-items:start;gap:24px}
  .hero-pin{padding:64px 0 96px}
}
@media (min-width:1200px){
  .grid-12{grid-template-columns:repeat(12,1fr);gap:24px 24px}
  .hero-grid{grid-template-columns:repeat(12,1fr);align-items:center;gap:24px}
  .hero-copy{grid-column:1 / span 7}
  .hero-copy h1{min-height:3.12em} /* reserve 3 lines so the font swap cannot push the copy below */
  .hero-visual{grid-column:8 / span 5}
  .cards-4{grid-template-columns:repeat(4,1fr)}
  .check-intro{grid-column:1 / span 5}.check-panel{grid-column:6 / span 7}
  .together-copy{grid-column:1 / span 7}.price{grid-column:8 / span 5}
  .faq-intro{grid-column:1 / span 4}.faq{grid-column:5 / span 8}
  .contact-copy{grid-column:1 / span 5}.form{grid-column:6 / span 7}
  .commit{grid-template-columns:repeat(3,1fr)}
  .deliver{grid-template-columns:repeat(3,1fr)}
}
/* Pinned hero scene: desktop with a pointer, enough height, motion allowed. */
@media (min-width:1200px) and (min-height:720px) and (hover:hover) and (prefers-reduced-motion:no-preference){
  .hero-track{height:230vh}
  .hero-pin{position:sticky;top:var(--header);height:calc(100vh - var(--header));padding:0;display:flex;align-items:center}
  .hero-pin .wrap{width:100%}
}
@media (max-width:767px){
  .sec{padding:72px 0}
  .brand-by{display:none}
  .q-text{font-size:1.5rem}
  .check-panel,.form,.price{padding:20px}
  .stage-item h3{font-size:1.8rem}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
  .js .rv{opacity:1;transform:none}
}