*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{--blue:#0071e3;--bg:#f5f5f7;--bg2:#fff;--text:#1d1d1f;--muted:#6e6e73;--border:rgba(0,0,0,.1)}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Helvetica Neue",sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}

.progress-bar{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--blue),#34aadc);z-index:9999;pointer-events:none;transition:width .1s linear}

/* Navbar */
.navbar{
  position:fixed;top:0;left:0;right:0;height:56px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 28px;
  background:rgba(6,6,15,.75);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(255,255,255,.07);
  z-index:1000;transition:background .4s,border-color .4s;
}
.navbar.light{
  background:rgba(245,245,247,.92);
  border-bottom-color:rgba(0,0,0,.1);
}
.navbar.light .nav-logo{color:var(--text)}
.navbar.light .nav-links a{color:var(--muted)}
.nav-logo{font-size:1rem;font-weight:700;color:#fff;letter-spacing:-.02em}
.accent{color:var(--blue)}
.nav-links{display:flex;gap:26px;list-style:none}
.nav-links a{color:rgba(255,255,255,.65);font-size:.86rem;transition:color .2s}
.nav-links a:hover{color:#fff}
.navbar.light .nav-links a:hover{color:var(--blue)}
.nav-cta{padding:7px 16px;border-radius:980px;background:var(--blue);color:#fff;font-size:.86rem;font-weight:600;box-shadow:0 4px 16px rgba(0,113,227,.35)}

/* Hero */
.hero{
  min-height:100svh;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  text-align:center;
  padding:140px 24px 120px;
  background:#06060f;
  position:relative;
  overflow:hidden;
}

/* Animated mesh-gradient blobs */
.hero::before{
  content:'';
  position:absolute;inset:0;
  background:
    radial-gradient(ellipse 70% 55% at 20% 40%, rgba(0,113,227,.28) 0%, transparent 65%),
    radial-gradient(ellipse 55% 45% at 80% 30%, rgba(90,60,200,.22) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 50% 85%, rgba(0,180,150,.14) 0%, transparent 60%);
  animation:blobShift 12s ease-in-out infinite alternate;
  pointer-events:none;
}
@keyframes blobShift{
  0%  { transform:scale(1)    rotate(0deg);   opacity:.8; }
  50% { transform:scale(1.06) rotate(1.5deg); opacity:1;  }
  100%{ transform:scale(.97)  rotate(-1deg);  opacity:.85;}
}

/* Noise texture overlay for depth */
.hero::after{
  content:'';
  position:absolute;inset:0;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
  background-size:200px;
  pointer-events:none;
  opacity:.6;
}

/* Badge pill top */
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(12px);
  color:rgba(255,255,255,.65);
  font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;
  animation:fadeUp .8s cubic-bezier(.16,1,.3,1) both;
  position:relative;z-index:1;
  margin-bottom:28px;
}
.hero-badge-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--blue);
  box-shadow:0 0 8px var(--blue);
  animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(.85)}}

/* Main title */
.hero-title{
  font-size:clamp(5.5rem,14vw,11rem);
  font-weight:700;letter-spacing:-.06em;line-height:.88;
  color:#fff;
  animation:fadeUp .9s .08s cubic-bezier(.16,1,.3,1) both;
  position:relative;z-index:1;
}
.hero-title .accent{
  background:linear-gradient(135deg,#0071e3 0%,#34aadc 50%,#a259ff 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
  filter:drop-shadow(0 0 40px rgba(0,113,227,.5));
}

/* Tagline */
.hero-sub{
  font-size:clamp(1rem,2.2vw,1.3rem);
  color:rgba(255,255,255,.5);
  line-height:1.7;
  margin-top:22px;
  width:min(540px,100%);
  animation:fadeUp .9s .18s cubic-bezier(.16,1,.3,1) both;
  position:relative;z-index:1;
}

/* CTA group */
.hero-ctas{
  display:flex;align-items:center;gap:14px;margin-top:36px;
  flex-wrap:wrap;justify-content:center;
  animation:fadeUp .9s .28s cubic-bezier(.16,1,.3,1) both;
  position:relative;z-index:1;
}
.hero-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:980px;
  background:var(--blue);
  color:#fff;font-size:1rem;font-weight:600;
  transition:opacity .2s,transform .2s,box-shadow .2s;
  box-shadow:0 8px 32px rgba(0,113,227,.45);
}
.hero-pill:hover{opacity:.88;transform:translateY(-2px);box-shadow:0 14px 40px rgba(0,113,227,.55)}
.hero-pill-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:980px;
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(10px);
  color:rgba(255,255,255,.8);font-size:1rem;
  transition:background .2s,transform .2s;
}
.hero-pill-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}

/* Floating stats row */
.hero-stats{
  display:flex;gap:40px;margin-top:64px;
  animation:fadeUp .9s .38s cubic-bezier(.16,1,.3,1) both;
  position:relative;z-index:1;
}
.hero-stat{text-align:center}
.stat-val{
  font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;
  color:#fff;letter-spacing:-.04em;line-height:1;
}
.stat-label{
  font-size:.78rem;color:rgba(255,255,255,.4);
  margin-top:5px;letter-spacing:.04em;text-transform:uppercase;
}
.stat-divider{width:1px;background:rgba(255,255,255,.1);align-self:stretch}

/* Scroll hint */
.scroll-hint{
  position:absolute;bottom:32px;left:50%;transform:translateX(-50%);
  width:26px;height:44px;
  border:1px solid rgba(255,255,255,.15);border-radius:999px;
  display:grid;place-items:start center;padding-top:7px;
  z-index:2;
}
.scroll-dot{width:5px;height:5px;background:rgba(255,255,255,.5);border-radius:50%;animation:sd 2s infinite}

@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@keyframes sd{0%{transform:translateY(0);opacity:.4}70%{transform:translateY(16px);opacity:.9}100%{transform:translateY(16px);opacity:0}}

/* hero-eyebrow kept for compatibility but replaced by hero-badge */
.hero-eyebrow{display:none}

/* Journey */
.journey{position:relative;background:#07070e;padding-top:0}
#threeCanvas{position:sticky;top:0;display:block;width:100%;height:100svh;z-index:1}

/* Lens overlay */
.lens-overlay{
  position:fixed;top:50%;left:50%;
  width:280px;height:180px;
  pointer-events:none;z-index:5;opacity:0;
  -webkit-mask-image:radial-gradient(ellipse 82% 78% at 50% 50%,#000 0%,#000 44%,rgba(0,0,0,.85) 62%,rgba(0,0,0,.35) 80%,transparent 100%);
  mask-image:radial-gradient(ellipse 82% 78% at 50% 50%,#000 0%,#000 44%,rgba(0,0,0,.85) 62%,rgba(0,0,0,.35) 80%,transparent 100%);
}
.lens-img{position:absolute;inset:-10%;width:120%;height:120%;object-fit:cover;object-position:center;opacity:0;transition:opacity 1s cubic-bezier(.4,0,.2,1);filter:brightness(.78) saturate(1.2)}
.lens-img.active{opacity:.60}

/* Epoch panel */
.epoch-panel{position:fixed;bottom:min(5vh,52px);left:min(5vw,60px);width:min(440px,88vw);padding:24px 28px;border-radius:18px;background:rgba(0,0,0,.5);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid rgba(255,255,255,.12);opacity:0;transform:translateY(14px);transition:opacity .5s,transform .5s;z-index:6;pointer-events:none}
.epoch-panel.show{opacity:1;transform:none}
.epoch-meta{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.epoch-num{color:rgba(255,255,255,.4);font-size:.8rem;letter-spacing:.08em}
.epoch-tag{padding:3px 10px;border-radius:999px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.1);color:#fff;font-size:.76rem;text-transform:uppercase;letter-spacing:.06em}
.epoch-heading{font-size:clamp(1.6rem,3.5vw,2.6rem);font-weight:600;letter-spacing:-.04em;color:#fff;line-height:.95}
.epoch-text{margin-top:10px;color:rgba(255,255,255,.7);line-height:1.7;font-size:.95rem}

/* Zoom title */
.zoom-title{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;pointer-events:none;z-index:7;opacity:0;transition:opacity .35s ease}
.zt-sub{color:var(--blue);font-size:.9rem;letter-spacing:.06em;text-transform:uppercase;text-shadow:0 2px 20px rgba(0,0,0,.9)}
.zt-heading{font-size:clamp(3rem,9vw,7rem);font-weight:700;letter-spacing:-.05em;color:#fff;margin-top:8px;text-shadow:0 4px 40px rgba(0,0,0,.8)}

/* Final overlay — fixed, fades in at end of journey.
   Becomes inert once user scrolls past journey. */
.final-overlay{
  position:fixed;inset:0;
  opacity:0;pointer-events:none;
  z-index:8;visibility:hidden;
  transition:opacity .6s ease;
}
.final-overlay.show{opacity:1;visibility:visible;pointer-events:auto}
/* Once journey is over and user scrolls to features, hide finale */
.final-overlay.done{opacity:0!important;visibility:hidden!important;pointer-events:none!important;transition:opacity .4s ease}
.finale-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.finale-vignette{position:absolute;inset:0;background:radial-gradient(ellipse 88% 88% at 50% 50%,transparent 20%,rgba(0,0,0,.65) 100%)}
.finale-text{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:20px}
.fs-eyebrow{color:var(--blue);font-size:.88rem;letter-spacing:.06em;text-transform:uppercase;text-shadow:0 2px 20px rgba(0,0,0,.8)}
.fs-title{font-size:clamp(2.5rem,8vw,7rem);font-weight:700;letter-spacing:-.05em;color:#fff;margin-top:10px;text-shadow:0 4px 40px rgba(0,0,0,.6)}
.fs-sub{font-size:1.05rem;color:rgba(255,255,255,.75);margin-top:14px;text-shadow:0 2px 20px rgba(0,0,0,.7)}
.fs-cta{display:inline-flex;align-items:center;margin-top:28px;padding:14px 28px;border-radius:980px;background:var(--blue);color:#fff;font-size:1rem;font-weight:600;letter-spacing:.01em;transition:opacity .2s,transform .2s;text-shadow:none}
.fs-cta:hover{opacity:.85;transform:translateY(-2px)}

/* Journey spacer */
.journey-spacer{height:700vh}

/* Features */
.features{width:min(1160px,calc(100% - 40px));margin-inline:auto;padding:120px 0 60px}
.label{display:inline-block;color:var(--blue);font-size:.85rem;letter-spacing:.04em;text-transform:uppercase}
.section-title{margin-top:10px;font-size:clamp(2.2rem,5vw,3.8rem);font-weight:700;letter-spacing:-.05em;line-height:.95}
.features-grid{margin-top:40px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.feature-card{padding:28px;border-radius:18px;border:1px solid var(--border);background:var(--bg2);transition:transform .3s,box-shadow .3s}
.feature-card:hover{transform:translateY(-5px);box-shadow:0 16px 40px rgba(0,0,0,.1)}
.ficon{font-size:1.7rem;margin-bottom:14px}
.feature-card h3{font-size:1.1rem;font-weight:600;margin-bottom:9px}
.feature-card p{color:var(--muted);line-height:1.68;font-size:.94rem}

/* Tech */
.tech{width:min(1160px,calc(100% - 40px));margin-inline:auto;padding:60px 0 120px}
.tech-wrap{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.tech-pill{padding:10px 18px;border-radius:980px;border:1px solid var(--border);background:var(--bg2);font-size:.88rem}

/* CTA */
.cta{padding:80px 24px 100px;text-align:center;background:var(--bg2);border-top:1px solid var(--border)}
.cta h2{font-size:clamp(2rem,5vw,3.2rem);font-weight:700;letter-spacing:-.05em}
.cta p{margin-top:10px;color:var(--muted)}
.cta-sub{color:var(--blue)}

@media(max-width:900px){.nav-links{display:none}.features-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.features-grid{grid-template-columns:1fr}}


/* ══════════════════════════════════════════
   INTERACTIVE MODEL SECTION
══════════════════════════════════════════ */
.model-section{
  background:var(--bg2);
  padding:100px 0 100px;overflow:hidden;
  border-bottom:1px solid var(--border);
}
.model-content{
  width:min(1160px,calc(100% - 40px));margin-inline:auto;
  display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;
}
.model-text .section-title{font-size:clamp(2.4rem,5vw,4rem)}
.model-desc{
  margin-top:18px;color:var(--muted);line-height:1.75;font-size:1.02rem;
  max-width:440px;
}
.model-specs{
  margin-top:28px;list-style:none;display:flex;flex-direction:column;gap:10px;
}
.model-specs li{
  display:flex;justify-content:space-between;align-items:center;
  padding:10px 0;border-bottom:1px solid var(--border);font-size:.93rem;
}
.spec-label{color:var(--muted)}
.spec-val{font-weight:600;color:var(--text)}
.model-hint{
  margin-top:18px;font-size:.82rem;color:var(--muted);letter-spacing:.02em;
}
.model-canvas-wrap{
  width:100%;aspect-ratio:1/1;
  border-radius:28px;overflow:hidden;
  background:radial-gradient(ellipse at 50% 55%,#1e1e38 0%,#08080f 100%);
  cursor:grab;
  box-shadow:0 32px 80px rgba(0,0,0,.22),0 0 0 1px rgba(255,255,255,.06);
}
.model-canvas-wrap:active{cursor:grabbing}
#heroCanvas{width:100%;height:100%;display:block}

/* ══════════════════════════════════════════
   SECTION SUBTITLE
══════════════════════════════════════════ */
.section-sub{
  margin-top:14px;color:var(--muted);font-size:1.05rem;line-height:1.7;
  max-width:600px;
}

/* ══════════════════════════════════════════
   HOW IT WORKS
══════════════════════════════════════════ */
.how-it-works{
  background:linear-gradient(180deg,var(--bg) 0%,var(--bg2) 100%);
  padding:100px 0;
}
.how-inner{
  width:min(1160px,calc(100% - 40px));margin-inline:auto;
}
.steps{
  margin-top:48px;display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
}
.step{padding:28px;border-radius:18px;background:var(--bg2);border:1px solid var(--border);position:relative}
.step-num{
  font-size:2.8rem;font-weight:700;letter-spacing:-.06em;
  color:rgba(0,113,227,.15);line-height:1;margin-bottom:14px;
}
.step h3{font-size:1.05rem;font-weight:600;margin-bottom:8px}
.step p{color:var(--muted);font-size:.93rem;line-height:1.68}

/* ══════════════════════════════════════════
   TECH GRID
══════════════════════════════════════════ */
.tech-grid{
  margin-top:36px;display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
}
.tech-card{
  padding:24px;border-radius:16px;
  border:1px solid var(--border);background:var(--bg2);
  transition:transform .3s,box-shadow .3s;
}
.tech-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,.08)}
.tech-icon{font-size:1.6rem;margin-bottom:12px}
.tech-card h4{font-size:1rem;font-weight:600;margin-bottom:6px}
.tech-card p{color:var(--muted);font-size:.88rem;line-height:1.6}

/* ══════════════════════════════════════════
   FAQ
══════════════════════════════════════════ */
.faq{padding:100px 0;background:var(--bg)}
.faq-inner{width:min(780px,calc(100% - 40px));margin-inline:auto}
.faq-list{margin-top:40px;display:flex;flex-direction:column;gap:12px}
.faq-item{
  border:1px solid var(--border);border-radius:14px;
  background:var(--bg2);overflow:hidden;
  transition:box-shadow .3s;
}
.faq-item[open]{box-shadow:0 8px 24px rgba(0,0,0,.08)}
.faq-item summary{
  padding:20px 24px;font-size:1rem;font-weight:600;
  cursor:pointer;list-style:none;display:flex;
  justify-content:space-between;align-items:center;
  user-select:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:'＋';font-size:1.2rem;font-weight:400;
  color:var(--blue);flex-shrink:0;transition:transform .3s;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{
  padding:0 24px 20px;color:var(--muted);
  line-height:1.75;font-size:.97rem;
}

@media(max-width:900px){
  .model-content{grid-template-columns:1fr;gap:40px}
  .model-canvas-wrap{max-width:440px;margin:0 auto}
  .steps{grid-template-columns:1fr 1fr}
  .tech-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .steps{grid-template-columns:1fr}
  .tech-grid{grid-template-columns:1fr}
}