/* ============================================================
   AETHYR ADHD — cinematic, black, Apple-grade
   Pure black. Generous space. Large thin centred type.
   No neon glass boxes, no orbit, no smoke.
   ============================================================ */

:root{
  --bg:#000;
  --text:#f5f5f7;
  --soft:rgba(245,245,247,.72);
  --muted:rgba(245,245,247,.5);
  --faint:rgba(245,245,247,.34);
  --line:rgba(255,255,255,.10);
  --hair:rgba(255,255,255,.07);
  --accent:#5ac8fa;
  --maxw:1080px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html,body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue","Segoe UI",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;color-scheme:dark;
}
body{line-height:1.6;overflow-x:hidden;font-weight:400}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* ---- type ---- */
h1,h2,h3{margin:0;color:#fff;font-weight:600;letter-spacing:-.022em;line-height:1.05}
h1{font-size:clamp(40px,7.4vw,86px)}
h2{font-size:clamp(30px,5vw,58px)}
h3{font-size:clamp(19px,2.2vw,26px);font-weight:500;letter-spacing:-.01em}
p{margin:0 0 1em;color:var(--soft);font-size:clamp(16px,1.4vw,19px);line-height:1.65}
.wrap{width:min(var(--maxw),100%);margin:0 auto;padding:0 24px}
.eyebrow{margin:0 0 20px;text-transform:uppercase;letter-spacing:.32em;font-size:12px;font-weight:500;color:var(--muted)}
.lead{font-size:clamp(18px,2vw,23px);color:var(--soft);max-width:720px;margin:22px auto 0;line-height:1.5}

/* ---- buttons ---- */
.btn,.app-store-cta,.home-actions a,.contact-links a{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 26px;border-radius:980px;font-size:15px;font-weight:500;
  transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease;
  white-space:nowrap;
}
.btn-primary,.app-store-cta{background:#fff !important;color:#000 !important;border:1px solid #fff !important}
.btn-primary:hover,.app-store-cta:hover{background:#e6e6eb !important;border-color:#e6e6eb !important}
.btn-ghost,.home-actions a,.contact-links a{border:1px solid rgba(255,255,255,.22);color:#fff}
.btn-ghost:hover,.home-actions a:hover,.contact-links a:hover{border-color:#fff;background:rgba(255,255,255,.04)}
.note,.download-note{font-size:13px;color:var(--muted);margin-top:16px;letter-spacing:.01em}

/* ---- nav ---- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(0,0,0,.66);backdrop-filter:saturate(180%) blur(22px);-webkit-backdrop-filter:saturate(180%) blur(22px);border-bottom:1px solid var(--hair)}
.site-header .wrap,.site-header{display:block}
.site-header{padding:0}
.site-header > .wrap,.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.site-header{display:flex;justify-content:center}
.site-header nav.site-nav{display:flex}
.brand-row{display:flex;align-items:center;gap:10px;height:52px;flex:0 0 auto}
.brand-mark{width:24px;height:24px;object-fit:contain}
.brand-title{font-size:15px;font-weight:600;letter-spacing:.01em;color:#fff}
.brand-sub{display:none}
/* header lays brand + nav on one centred row */
.site-header{padding:0}
.site-header{align-items:center}
.site-header{gap:0}
.site-header{flex-wrap:wrap}
.site-header{width:100%}
.site-header{position:sticky}
.site-nav{display:flex;align-items:center;gap:24px;flex-wrap:wrap;justify-content:center;padding:9px 24px}
.site-nav a{font-size:13px;color:var(--soft);transition:color .2s;white-space:nowrap}
.site-nav a:hover{color:#fff}
.site-nav a.active{color:#fff}
.site-nav a.header-cta{color:var(--accent);font-weight:500}

/* A simple, robust top bar: brand left, links wrap right */
header.site-header{display:block}
header.site-header > .brand-row{display:none}

/* ---- generic section rhythm ---- */
.page{min-height:100vh;position:relative}
main{display:block}
.section,.feature-overview,.pricing-overview,.video-showcase,.android-showcase{
  padding:clamp(84px,13vh,150px) 24px;text-align:center;
}
.section .inner{width:min(var(--maxw),100%);margin:0 auto}
.section-lead{max-width:760px;margin:20px auto 0;color:var(--soft);font-size:clamp(17px,1.9vw,22px);line-height:1.55}
.home-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:34px}

/* ---- HOME hero ---- */
.home-stage{min-height:calc(100vh - 53px);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:90px 24px}
.home-copy{max-width:900px;margin:0 auto}
.home-copy h1{margin:0 auto}
.home-copy p{font-size:clamp(18px,2vw,23px);color:var(--soft);max-width:720px;margin:24px auto 0;line-height:1.55}
.orbit-system,.home-intro{display:none !important}

/* ---- ecosystem: hairline grid, no cheap boxes ---- */
.index-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--hair);border:1px solid var(--hair);border-radius:22px;overflow:hidden;text-align:left;margin-top:52px}
.index-card{background:#000;padding:32px 28px;display:flex;flex-direction:column;gap:9px;min-height:0;transition:background .25s ease}
.index-card:hover{background:rgba(255,255,255,.028)}
.index-card h3{font-size:21px;letter-spacing:-.01em;color:#fff}
.index-card p{margin:0;font-size:15px;line-height:1.55;color:var(--muted)}
.index-card-lead{grid-column:1 / -1;background:linear-gradient(180deg,rgba(90,200,250,.06),transparent)}
.index-card-lead h3{font-size:24px}
.index-card-lead p{color:var(--soft);font-size:16px}

/* ---- statement / quote ---- */
.brand-quote{padding:clamp(90px,14vh,150px) 24px;text-align:center}
.brand-quote p{font-size:clamp(24px,3.4vw,44px);line-height:1.24;letter-spacing:-.02em;color:#fff;max-width:900px;margin:0 auto;font-weight:500}

/* ---- two link panels ---- */
.two-link-panels{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--hair);border:1px solid var(--hair);border-radius:22px;overflow:hidden;max-width:var(--maxw);margin:0 auto}
.wide-link{background:#000;padding:40px 34px;text-align:left;transition:background .25s ease}
.wide-link:hover{background:rgba(255,255,255,.028)}
.wide-link span{display:block;font-size:clamp(20px,2.2vw,26px);font-weight:600;color:#fff;margin-bottom:10px;letter-spacing:-.01em}
.wide-link p{margin:0;color:var(--muted)}

/* ---- pricing ---- */
.pricing-overview .section-stack,.section-stack{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--hair);border:1px solid var(--hair);border-radius:22px;overflow:hidden;max-width:960px;margin:44px auto 0}
.content-section{background:#000;padding:38px 32px;text-align:left}
.content-section h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px;letter-spacing:-.015em}
.content-section p{font-size:16px;color:var(--soft)}
.content-section p:last-child{margin-bottom:0}

/* ---- CONTENT / FEATURE PAGES ---- */
.page-hero{max-width:860px;margin:0 auto;padding:clamp(90px,15vh,170px) 24px 20px;text-align:center}
.page-orb{display:none}
.page-hero h1{margin:0 auto 18px}
.hero-copy{max-width:720px;margin:0 auto}
.hero-copy p{font-size:clamp(17px,1.9vw,21px);color:var(--soft)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:28px}
.tag-row span{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:7px 13px;letter-spacing:.02em}

/* the cheap "explain every card" strips are removed everywhere */
.feature-strip{display:none !important}

/* ---- contact + footer ---- */
.contact-strip{max-width:var(--maxw);margin:clamp(90px,12vh,140px) auto 0;padding:0 24px;text-align:center;display:block}
.strip-title{font-size:clamp(22px,3vw,34px);font-weight:600;color:#fff;letter-spacing:-.015em}
.strip-sub{font-size:14px;color:var(--muted);margin-top:8px}
.contact-links{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-top:26px}
.footer-band{max-width:var(--maxw);margin:80px auto 0;padding:34px 24px;border-top:1px solid var(--hair);display:flex;align-items:center;justify-content:center;gap:14px;text-align:center;color:var(--muted);font-size:13px;flex-wrap:wrap}
.footer-band img{width:22px;height:22px;object-fit:contain;opacity:.9}
.footer-band span{letter-spacing:.02em}
.bottom-line{text-align:center;color:var(--faint);font-size:12px;padding:24px;letter-spacing:.04em}

/* ---- promo video ---- */
.video-showcase,.android-showcase{display:flex;flex-direction:column;align-items:center;gap:20px}
.promo-video{width:100%;max-width:400px;border-radius:26px;border:1px solid var(--line);background:#000}
.video-caption{color:var(--muted);font-size:15px;margin:0}
.android-showcase h2{margin:0}
.android-join{margin-top:14px;max-width:640px;width:100%;border:1px solid var(--hair);border-radius:22px;padding:30px;text-align:left}
.android-join h3{margin:0 0 10px;color:#fff}
.android-join p{margin:0 0 14px}
.android-join a{color:var(--accent)}

/* ---- Foundation AI page extras ---- */
.fa-list{max-width:820px;margin:44px auto 0;text-align:left;display:grid;gap:1px;background:var(--hair);border:1px solid var(--hair);border-radius:22px;overflow:hidden}
.fa-item{background:#000;padding:30px 30px}
.fa-item h3{margin:0 0 8px;color:#fff}
.fa-item p{margin:0;color:var(--muted);font-size:16px}
.fa-callout{max-width:820px;margin:40px auto 0;border:1px solid var(--line);border-radius:22px;padding:34px;text-align:center}
.fa-callout p{margin:0;color:var(--soft);font-size:clamp(16px,1.8vw,20px)}

/* ============================================================
   BLACK CINEMATIC INTRO — home only.
   Static black, centred wordmark + line, held ~4s, then a clean fade.
   No movement.
   ============================================================ */
.splash{
  position:fixed;inset:0;z-index:9999;background:#000;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;gap:16px;padding:24px;
  animation:splashOut 1s ease 4s forwards;
}
.splash .st{font-size:clamp(30px,6.4vw,68px);font-weight:600;letter-spacing:.16em;color:#fff}
.splash .ss{font-size:clamp(14px,2vw,20px);color:var(--soft);letter-spacing:.03em;font-weight:400}
@keyframes splashOut{to{opacity:0;visibility:hidden}}
body.splash-done .splash{display:none}

/* ---- responsive ---- */
@media (max-width:900px){
  .index-grid{grid-template-columns:1fr 1fr}
  .section-stack,.pricing-overview .section-stack{grid-template-columns:1fr}
  .two-link-panels{grid-template-columns:1fr}
}
@media (max-width:600px){
  .index-grid{grid-template-columns:1fr}
  .site-nav{gap:16px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .splash{animation:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}