:root{
  --bg:#0c0a09; --bg-2:#141009; --panel:#1a140f;
  --ochre:#c8763f; --ochre-light:#e3a874; --bone:#f4eee2; --bone-dim:#cdc2b1; --muted:#968976;
  --line:rgba(200,118,63,.20);
  --serif:'Cormorant Garamond',Georgia,serif;
  --display:'Cinzel','Cormorant Garamond',Georgia,serif;
  --title:'Marcellus','Cormorant Garamond',Georgia,serif;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;overflow-x:clip}
body{background:var(--bg);color:var(--bone);font-family:var(--sans);font-weight:300;line-height:1.75;-webkit-font-smoothing:antialiased;-webkit-text-size-adjust:100%;text-size-adjust:100%;-webkit-tap-highlight-color:transparent;overflow-x:hidden}
a{color:inherit;text-decoration:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 30px}
.narrow{max-width:820px}
.eyebrow{font-size:.72rem;letter-spacing:.34em;text-transform:uppercase;color:var(--ochre-light);font-weight:500;margin-bottom:1.3rem;display:flex;align-items:center;gap:14px}
.eyebrow::before{content:"";width:30px;height:1px;background:var(--ochre)}
.eyebrow.center{justify-content:center}
h1,h2,h3{font-family:var(--title);font-weight:500;line-height:1.07}
p{color:var(--bone-dim)}
.lead{font-size:1.28rem;color:var(--bone);font-weight:300;line-height:1.65}

nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:20px 30px;transition:background .4s,border-color .4s,padding .4s;border-bottom:1px solid transparent}
nav.scrolled{background:rgba(12,10,9,.85);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);padding:13px 30px}
.brand{font-family:var(--display);font-size:1.4rem;letter-spacing:.24em;font-weight:600}
.brand span{color:var(--ochre-light)}
.nav-right{display:flex;align-items:center;gap:26px}
.nav-links{display:flex;gap:32px;font-size:.8rem;letter-spacing:.1em}
.nav-links a{color:var(--bone-dim);transition:color .25s}
.nav-links a:hover{color:var(--ochre-light)}
.nav-cta{color:var(--ochre-light)!important;border:1px solid var(--line);padding:8px 16px;border-radius:2px;transition:all .25s;white-space:nowrap}
.nav-cta:hover{background:rgba(200,118,63,.12)}
.nav-back{display:inline-flex;align-items:center;gap:7px;color:var(--bone);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;border:1px solid var(--line);padding:8px 14px;border-radius:2px;transition:all .25s;white-space:nowrap}
.nav-back:hover{background:rgba(200,118,63,.12);color:var(--ochre-light);border-color:rgba(200,118,63,.5)}
.nav-back svg{width:14px;height:14px;flex:0 0 auto}
@media(max-width:600px){.nav-back span{display:none}}
@media(max-width:820px){.nav-links{display:none}}

.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;align-items:center;padding:130px 0 100px;
  background:
    linear-gradient(90deg,rgba(12,10,9,.88) 0%,rgba(12,10,9,.46) 46%,rgba(12,10,9,.20) 100%),
    linear-gradient(180deg,rgba(12,10,9,.30) 0%,transparent 36%,rgba(12,10,9,.82) 100%),
    radial-gradient(110% 80% at 82% 22%,rgba(200,118,63,.16),transparent 60%),
    url("hero.jpg") center/cover no-repeat,#0c0a09;overflow:hidden}
.hero .wrap{position:relative;z-index:2;max-width:900px;text-shadow:0 2px 30px rgba(0,0,0,.6)}
.hero h1{font-size:clamp(3.4rem,9.5vw,7.5rem);letter-spacing:.05em;margin:.1rem 0 .5rem}
.hero .sub{font-family:var(--serif);font-style:italic;font-weight:400;font-size:clamp(1.5rem,3.8vw,2.6rem);color:var(--ochre-light);margin-bottom:2rem}
.hero .lead{max-width:680px;margin-bottom:2.6rem}
.hero-meta{display:flex;flex-wrap:wrap;gap:14px 28px;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.hero-meta span{display:flex;align-items:center;gap:9px}
.hero-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--ochre)}
.scroll-cue{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:2;color:var(--muted);font-size:.68rem;letter-spacing:.32em;text-transform:uppercase;animation:bob 2.6s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translate(-50%,0);opacity:.5}50%{transform:translate(-50%,8px);opacity:1}}
/* sub-page hero variants */
.hero.short{min-height:76vh;padding:150px 0 90px}
.hero.tech{background:
  linear-gradient(90deg,rgba(12,10,9,.9) 0%,rgba(12,10,9,.5) 48%,rgba(12,10,9,.28) 100%),
  linear-gradient(180deg,rgba(12,10,9,.32) 0%,transparent 40%,rgba(12,10,9,.86) 100%),
  radial-gradient(110% 80% at 78% 26%,rgba(60,180,200,.14),transparent 60%),
  url("virtualcave.jpg") center/cover no-repeat,#0c0a09}

.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--sans);font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;font-weight:500;padding:16px 32px;border-radius:2px;border:1px solid var(--ochre);background:var(--ochre);color:#160d07;transition:all .25s}
.btn:hover{background:var(--ochre-light);border-color:var(--ochre-light);transform:translateY(-2px)}
.btn.ghost{background:transparent;color:var(--bone)}
.btn.ghost:hover{background:rgba(200,118,63,.12);transform:translateY(-2px)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}

section{position:relative;padding:140px 0}
.band{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 100%)}
.band-2{background:var(--bg-2)}
h2.section-title{font-size:clamp(2.2rem,5.2vw,3.6rem);letter-spacing:.005em;margin-bottom:1.5rem;max-width:20ch}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
@media(max-width:860px){.two-col{grid-template-columns:1fr;gap:40px}}
.stack p+p{margin-top:1.2rem}
.pullquote{font-family:var(--serif);font-style:italic;font-size:clamp(1.8rem,4.6vw,3rem);line-height:1.24;color:var(--bone);max-width:20ch}
.pullquote .accent{color:var(--ochre-light)}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:48px 0;margin-top:54px}
@media(max-width:760px){.stats{grid-template-columns:repeat(2,1fr);gap:34px 16px}}
.stat .n{font-family:var(--serif);font-size:clamp(2.2rem,5vw,3.2rem);color:var(--ochre-light);line-height:1}
.stat .l{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:.6rem}

.shot{position:relative;border-radius:5px;overflow:hidden;border:1px solid var(--line)}
.shot img{display:block;width:100%;height:auto}
.shot figcaption{position:absolute;left:0;right:0;bottom:0;padding:48px 22px 18px;font-family:var(--serif);font-style:italic;font-size:1.14rem;color:var(--bone);background:linear-gradient(180deg,transparent,rgba(12,10,9,.88))}

.cover{position:relative;min-height:70vh;display:flex;align-items:flex-end;overflow:hidden;background:#0c0a09}
.cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.cover::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(12,10,9,.50) 0%,transparent 32%,rgba(12,10,9,.38) 58%,rgba(12,10,9,.94) 100%)}
.cover .cap{position:relative;z-index:2;width:100%}
.cover .cap .wrap{padding-top:70px;padding-bottom:64px}
.cover .cap h3{font-size:clamp(2.1rem,5.4vw,3.4rem);max-width:15ch;text-shadow:0 2px 28px rgba(0,0,0,.7)}
.cover .cap p{max-width:50ch;margin-top:1rem;font-size:1.12rem;text-shadow:0 2px 18px rgba(0,0,0,.75)}
/* 3-plane parallax push (vista / figure / cave frame) on the CGI-world cover */
.cover.par .player{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;will-change:transform}
.cover.par .kbimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;transform-origin:52% 56%;animation:kbpush 26s ease-in-out infinite alternate;will-change:transform}
@keyframes kbpush{from{transform:scale(1.02)}to{transform:scale(1.14)}}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:58px}
@media(max-width:900px){.cards{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.cards{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:4px;padding:36px 30px;transition:transform .3s,border-color .3s}
.card:hover{transform:translateY(-5px);border-color:var(--ochre)}
.card .ic{width:34px;height:34px;color:var(--ochre-light);margin-bottom:20px}
.card .num{font-family:var(--serif);font-size:2rem;color:var(--ochre-light);line-height:1;margin-bottom:14px}
.card h3{font-size:1.55rem;margin-bottom:.6rem}
.card p{font-size:.96rem}

.feature{border-left:2px solid var(--ochre);padding-left:22px;margin-bottom:30px}
.feature h3{font-size:1.3rem;margin-bottom:.4rem}
.feature p{font-size:.97rem}

/* pipeline film-strip */
.filmstrip{display:flex;gap:14px;margin-top:48px;overflow-x:auto;padding-bottom:16px;scroll-snap-type:x mandatory}
.filmstrip figure{flex:0 0 auto;width:min(82vw,400px);scroll-snap-align:start}
.filmstrip img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;border:1px solid var(--line);border-radius:4px}
.filmstrip figcaption{margin-top:11px;font-family:var(--serif);font-style:italic;font-size:1.04rem;color:var(--bone-dim)}
.filmstrip .step{display:block;margin-bottom:4px;font-family:var(--sans);font-style:normal;font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ochre-light)}
.filmstrip::-webkit-scrollbar{height:8px}.filmstrip::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}
/* credentials wordmark row */
.creds{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 26px;margin-top:38px;color:var(--muted);font-size:.82rem;letter-spacing:.04em}
.creds b{color:var(--bone-dim);font-weight:500}
/* Visualskies partner logo */
.vslogo{display:block;width:230px;max-width:62%;height:auto;margin:0 0 22px;opacity:.92}

/* before/after slider */
.ba{position:relative;max-width:1000px;margin:64px auto 0;border:1px solid var(--line);border-radius:6px;overflow:visible;--pos:50%}
.ba img{display:block;width:100%;border-radius:5px}
.ba .before{position:absolute;inset:0;height:100%;object-fit:cover;clip-path:inset(0 calc(100% - var(--pos)) 0 0)}
.ba .handle{position:absolute;top:0;bottom:0;left:var(--pos);width:2px;background:var(--ochre-light);transform:translateX(-1px);z-index:3;pointer-events:none}
.ba .handle::after{content:"\2194";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:42px;height:42px;border-radius:50%;background:var(--ochre);color:#160d07;display:flex;align-items:center;justify-content:center;font-size:1.1rem;box-shadow:0 2px 14px rgba(0,0,0,.55)}
.ba input[type=range]{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;z-index:4;margin:0}
.ba .lbl{position:absolute;bottom:14px;z-index:3;font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--bone);background:rgba(12,10,9,.6);padding:5px 11px;border-radius:2px;pointer-events:none}
.ba .lbl.l{left:14px}.ba .lbl.r{right:14px}
/* CV-traced cave outlines */
.ba .cavesvg{position:absolute;inset:0;width:100%;height:100%;z-index:5;pointer-events:none}
.ba .cavesvg polygon{fill:rgba(227,168,116,.07);stroke:var(--ochre-light);stroke-width:2;vector-effect:non-scaling-stroke;opacity:0;transition:opacity .5s ease;stroke-opacity:.5;filter:drop-shadow(0 0 2px rgba(227,168,116,.5))}
.ba .cavesvg polygon.on{opacity:1;animation:cavepulse 1.9s ease-in-out infinite}
@keyframes cavepulse{
  0%,100%{stroke-opacity:.3;stroke-width:1.3;filter:drop-shadow(0 0 1px rgba(227,168,116,.3))}
  50%{stroke-opacity:1;stroke-width:2.7;filter:drop-shadow(0 0 9px rgba(227,168,116,1))}
}
.ba .cavesvg polygon.on:nth-child(4n+1){animation-delay:.55s}
.ba .cavesvg polygon.on:nth-child(4n+2){animation-delay:1.05s}
.ba .cavesvg polygon.on:nth-child(4n+3){animation-delay:1.5s}
.ba .cavelabel{position:absolute;z-index:6;transform:translate(-50%,-118%);font-size:.5rem;letter-spacing:.13em;text-transform:uppercase;font-weight:500;color:var(--ochre-light);white-space:nowrap;opacity:0;transition:opacity .45s ease;pointer-events:none;text-shadow:0 1px 3px #000,0 0 7px rgba(0,0,0,.85)}
.ba .cavelabel.on{opacity:1}
/* LiDAR scan from the drone: a glowing fan + a sweeping line-scanner beam */
/* straight-down LiDAR line — rapid-pulses only while the slider is dragged */
.ba .scanbeam{position:absolute;left:var(--pos);top:2%;width:2px;height:96%;transform:translateX(-50%);z-index:5;pointer-events:none;background:linear-gradient(180deg,rgba(243,238,226,.95),rgba(227,168,116,.6) 45%,rgba(227,168,116,.15));box-shadow:0 0 11px rgba(227,168,116,.9);opacity:0;transition:opacity .35s ease}
.ba.scanning .scanbeam{animation:scanpulse .15s ease-in-out infinite}
@keyframes scanpulse{0%,100%{opacity:.18}50%{opacity:1}}
.ba .dronecap{position:absolute;left:var(--pos);top:0;transform:translate(-50%,5px);z-index:7;pointer-events:none;font-size:.5rem;letter-spacing:.13em;text-transform:uppercase;color:var(--ochre-light);white-space:nowrap;text-shadow:0 1px 3px #000,0 0 6px rgba(0,0,0,.85)}
/* octocopter drone riding the slider line, above the image */
.ba .drone{position:absolute;left:var(--pos);top:0;width:112px;z-index:7;pointer-events:none;transform:translate(-50%,-64%);animation:dronehover 3.2s ease-in-out infinite;filter:drop-shadow(0 7px 11px rgba(0,0,0,.6)) brightness(1.7)}
.ba .drone img{display:block;width:100%}
@keyframes dronehover{0%,100%{transform:translate(-50%,-64%)}50%{transform:translate(-50%,-72%)}}
@media(max-width:620px){.ba .drone{width:82px}}

.press-attr{text-align:center;font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}

.cta{position:relative;text-align:center;overflow:hidden;background:#0c0a09}
.cta img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;opacity:.5}
.cta::after{content:"";position:absolute;inset:0;z-index:1;background:radial-gradient(90% 120% at 50% 30%,rgba(12,10,9,.72),rgba(12,10,9,.94))}
.cta .wrap{position:relative;z-index:2}
.cta .pullquote{margin:0 auto 1.6rem;text-align:center;max-width:22ch}

footer{padding:48px 0;border-top:1px solid var(--line);background:var(--bg)}
.foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:18px;align-items:center;font-size:.78rem;color:var(--muted)}

/* jungle ambience play button */
.ambient-btn{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;align-items:center;gap:10px;padding:10px 16px 10px 13px;border-radius:30px;border:1px solid var(--line);background:rgba(20,16,12,.82);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:var(--bone-dim);font-family:var(--sans);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;cursor:pointer;transition:all .25s}
.ambient-btn:hover{border-color:var(--ochre);color:var(--ochre-light)}
.ambient-btn .ic{position:relative;display:inline-flex;align-items:center;justify-content:center;width:18px;height:16px;color:var(--ochre-light)}
.ambient-btn .play{width:15px;height:15px}
.ambient-btn .bars{display:none;gap:2px;align-items:flex-end;height:15px}
.ambient-btn .bars i{width:3px;height:5px;background:var(--ochre-light);border-radius:1px;animation:eq .9s ease-in-out infinite}
.ambient-btn .bars i:nth-child(2){animation-delay:.25s}.ambient-btn .bars i:nth-child(3){animation-delay:.45s}.ambient-btn .bars i:nth-child(4){animation-delay:.15s}
.ambient-btn.playing .play{display:none}
.ambient-btn.playing .bars{display:flex}
@keyframes eq{0%,100%{height:4px}50%{height:15px}}
@media(max-width:620px){.ambient-btn .txt{display:none}.ambient-btn{padding:11px;right:14px;bottom:14px}}

@media(max-width:620px){
  .wrap{padding:0 22px}
  section{padding:88px 0}
  .hero{padding:108px 0 84px;min-height:92vh}
  .hero.short{min-height:64vh;padding:120px 0 70px}
  .cover{min-height:60vh}
  .cover .cap .wrap{padding-top:44px;padding-bottom:42px}
  .lead{font-size:1.12rem}
  .stats{padding:34px 0;gap:26px 14px}
  nav{padding:14px 20px}
  nav.scrolled{padding:11px 20px}
}

.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s ease,transform .9s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}.scroll-cue{animation:none}}

/* ============ IMAGE-FOCUSED MOBILE PASS (shared sub-pages) ============ */
@media(max-width:600px){
  section{padding:clamp(52px,12vw,76px) 0}
  .wrap{padding:0 18px}
  h2.section-title{font-size:clamp(1.95rem,7.4vw,2.6rem)}
  /* covers fill more of the screen */
  .cover{min-height:76vh}
  .cover .cap h3{font-size:clamp(1.9rem,7.6vw,2.45rem)}
  .cover .cap p{font-size:1rem;max-width:38ch}
  .cover .cap .wrap{padding-bottom:clamp(30px,8vw,52px)}
  /* reels read big */
  .filmstrip{gap:10px}
  .filmstrip figure{width:min(90vw,520px)}
  /* technology before/after slider: full-bleed, the page's hero interaction */
  .ba{width:auto;margin-left:-18px;margin-right:-18px;border-radius:0}
  .ba img{border-radius:0}
  .two-col img,.shot img{border-radius:6px}
}