/* Public / Platform Anatomy — scroll-driven exploded view of TwinShip */
:root {
  --lime: #C4FF61;
  --lime-dark: #a6d649;
  --black: #000;
  --near-black: #08080a;
  --ink: #16161a;
  --cream: #F4F3EE;
  --paper: #FBFAF6;
  --rule: rgba(0,0,0,.09);
  --muted: rgba(0,0,0,.52);
  --faint: rgba(0,0,0,.32);
  --font: 'Outfit', sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --ease: cubic-bezier(0.16,1,0.3,1);
  --edge: 48px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--cream);color:var(--ink);overflow-x:hidden;-webkit-font-smoothing:antialiased}
::selection{background:var(--lime);color:var(--black)}
a{color:inherit;text-decoration:none}

/* ── NAV (light variant of the public nav) ── */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:18px var(--edge);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--rule);background:rgba(244,243,238,.82);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);transition:padding .4s var(--ease)}
.nav.scrolled{padding:12px var(--edge)}
.nav-logo{display:flex;align-items:baseline;gap:8px}
.nav-logo .mark{font-weight:800;font-size:1.1rem;letter-spacing:-.02em;color:var(--ink)}
.nav-logo .sub{font-family:var(--mono);font-size:.55rem;letter-spacing:.1em;color:var(--faint);border-left:1px solid var(--rule);padding-left:8px}
.nav-links{display:flex;gap:34px;list-style:none;position:absolute;left:50%;transform:translateX(-50%)}
.nav-links a{font-size:.7rem;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);transition:color .3s ease}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-links a.active{box-shadow:inset 0 -2px 0 var(--lime)}
.nav-cta{font-size:.68rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:9px 24px;border-radius:100px;background:var(--ink);color:#fff;transition:all .35s var(--ease)}
.nav-cta:hover{background:var(--lime);color:var(--black)}

/* ── ANATOMY (sticky scroll stage) ── */
.anatomy{position:relative;height:720vh}
.anatomy-sticky{position:sticky;top:0;height:100vh;min-height:620px;overflow:hidden;background:var(--cream)}
.anatomy-hero{position:absolute;top:92px;left:var(--edge);max-width:430px;z-index:6}
.anatomy-hero h1{font-size:clamp(2rem,3.3vw,3.25rem);font-weight:400;line-height:1.04;letter-spacing:-.035em;margin-bottom:16px}
.anatomy-hero p{font-size:.95rem;font-weight:300;line-height:1.55;color:var(--muted);max-width:400px;margin-bottom:14px}
.skip-link{font-size:.78rem;font-weight:500;border-bottom:1px solid currentColor;padding-bottom:1px}
.skip-link:hover{color:var(--black);border-color:var(--lime-dark)}
.anatomy-eyebrow{position:absolute;top:92px;right:var(--edge);font-family:var(--mono);font-size:.58rem;letter-spacing:.22em;text-transform:uppercase;color:var(--faint);z-index:2;transition:opacity .4s ease}

.anatomy-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:2;touch-action:pan-y;cursor:grab;outline:none}
.anatomy-canvas.is-dragging{cursor:grabbing}
.anatomy-canvas.is-hovering{cursor:pointer}
.flow-layer{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}
.flow-back{z-index:1}
.flow-front{z-index:3}
.flow-back path{fill:none;stroke:rgba(0,0,0,.28);stroke-width:1}
.flow-back circle{fill:var(--ink)}
.flow-back circle.chip-dot{fill:var(--ink)}
.flow-front .leader{fill:none;stroke:rgba(0,0,0,.38);stroke-width:.9;transition:stroke .25s ease}
.flow-front .leader.is-active{stroke:var(--ink);stroke-width:1.2}
.flow-front .leader-dot{fill:var(--ink)}
.flow-front .story-preview{fill:none;stroke:rgba(0,0,0,.3);stroke-width:1}
.flow-front .story-halo{fill:none;stroke:rgba(251,250,246,.85);stroke-width:4.5;stroke-linecap:round;stroke-linejoin:round}
.flow-front .story-path{fill:none;stroke:var(--ink);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.flow-front .story-path.is-dashed{stroke-dasharray:4 4}
.flow-front .story-head{fill:var(--lime);stroke:var(--ink);stroke-width:1.4}
.flow-front .agent-link{fill:none;stroke:rgba(0,0,0,.45);stroke-width:1;stroke-dasharray:3 4}

/* ── CHIPS ── */
.chip{display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 11px;background:#fff;border:1px solid var(--rule);border-radius:100px;font-size:.74rem;font-weight:500;white-space:nowrap;box-shadow:0 1px 0 rgba(0,0,0,.03)}
.chip-ico{display:inline-grid;place-items:center;width:16px;height:16px;border-radius:4px;background:var(--ico,#111);color:#fff;font-size:.56rem;font-weight:700;line-height:1}
.chip-ico-mono{font-family:var(--mono);font-size:.5rem}
.chip-col{position:absolute;z-index:4;display:flex;flex-direction:column;gap:9px;transition:opacity .2s linear}
.chip-col-left{left:var(--edge);top:50%;align-items:flex-start}
.chip-col-right{right:var(--edge);top:42%;align-items:flex-end}
.chip-group-label{font-family:var(--mono);font-size:.56rem;letter-spacing:.2em;text-transform:uppercase;color:var(--faint);margin:2px 0 1px}
.chip-group-label:not(:first-child){margin-top:12px}
.story-chip{transition:opacity .3s ease}
.story-chip.is-dashed{border-style:dashed;color:var(--muted)}
.story-chip:empty{display:none}

/* ── CALLOUTS ── */
.callouts{position:absolute;z-index:5;display:flex;flex-direction:column;gap:8px;width:250px;opacity:0;visibility:hidden;transition:opacity .2s linear}
.callouts-left{left:var(--edge);bottom:30px}
.callouts-right{right:var(--edge);top:118px;width:262px}
.callouts-left .story-chip{align-self:flex-start;margin-bottom:12px}
.callouts-right .story-chip{align-self:flex-end;margin-top:12px}
.callout{display:block;font-size:.72rem;line-height:1.4;transition:opacity .3s ease}
.callout .num{font-family:var(--mono);font-size:.58rem;color:var(--faint);margin-right:8px}
.callout strong{font-weight:500;font-size:.8rem}
.callout em{font-style:normal;font-size:.62rem;color:var(--faint);margin-left:4px}
.callout p{color:var(--muted);font-weight:300;padding-left:24px;margin-top:1px}
.callout.is-dim{opacity:.32}
.callout.is-hot strong{box-shadow:inset 0 -6px 0 rgba(196,255,97,.8)}
.callout.is-hot .num{color:var(--ink)}

/* ── IN-SCENE LABELS ── */
.packet{position:absolute;left:0;top:0;z-index:6;pointer-events:none;font-family:var(--mono);font-size:.62rem;font-weight:500;padding:5px 10px;border-radius:100px;background:#fff;border:1.3px solid var(--ink);white-space:nowrap;opacity:0;transform:translate(-9999px,0);transition:opacity .2s ease}
.packet.is-warn{background:var(--ink);color:var(--lime)}
.mark-icon{position:absolute;left:0;top:0;z-index:6;pointer-events:none;width:24px;height:24px;margin:-12px 0 0 -12px;border-radius:50%;background:#fff;border:1.5px solid var(--ink);display:grid;place-items:center;font-weight:700;font-size:.8rem;opacity:0;transform:translate(-9999px,0)}
.pulse-rings{position:absolute;left:0;top:0;z-index:1;pointer-events:none;opacity:0;transform:translate(-9999px,0)}
.pulse-rings span{position:absolute;left:-60px;top:-22px;width:120px;height:44px;border-radius:50%;border:1px solid rgba(0,0,0,.35);animation:ring 2.4s ease-out infinite}
.pulse-rings span:nth-child(2){animation-delay:.8s}
.pulse-rings span:nth-child(3){animation-delay:1.6s}
@keyframes ring{from{transform:scale(.45);opacity:1}to{transform:scale(1.35);opacity:0}}

/* ── STAGE CAPTION ── */
.stage-caption{position:absolute;right:var(--edge);bottom:30px;width:360px;z-index:6}
.stage-progress{display:grid;grid-template-columns:repeat(var(--stages,6),1fr);gap:4px;margin-bottom:12px}
.stage-progress button{height:14px;border:0;background:transparent;cursor:pointer;display:flex;align-items:center;padding:0}
.stage-progress button span{display:block;width:100%;height:2px;background:rgba(0,0,0,.14);position:relative;overflow:hidden}
.stage-progress button span::after{content:'';position:absolute;inset:0;background:var(--ink);transform:scaleX(var(--fill,0));transform-origin:left}
.stage-progress button:hover span{background:rgba(0,0,0,.3)}
.stage-progress button:focus-visible{outline:2px solid var(--lime-dark);outline-offset:2px}
.stage-list{list-style:none;position:relative;min-height:62px}
.stage-list li{position:absolute;inset:0 0 auto 0;display:flex;gap:12px;opacity:0;transform:translateY(6px);transition:opacity .35s ease,transform .35s var(--ease);pointer-events:none}
.stage-list li.is-active{opacity:1;transform:none;pointer-events:auto}
.stage-list .num{font-family:var(--mono);font-size:.6rem;color:var(--faint);padding-top:3px}
.stage-list p{font-size:.8rem;line-height:1.45;color:var(--muted)}
.stage-list strong{color:var(--ink);font-weight:500}
.legend{display:flex;align-items:center;gap:8px;margin-top:10px;padding-left:22px;font-size:.66rem;color:var(--faint)}
.legend .dash{width:18px;border-top:1.3px dashed rgba(0,0,0,.5)}

.drag-hint{position:absolute;left:50%;bottom:24px;transform:translateX(-50%);z-index:4;font-family:var(--mono);font-size:.58rem;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);display:flex;align-items:center;gap:8px;transition:opacity .6s ease;pointer-events:none}
.drag-hint-ico{font-size:.9rem;letter-spacing:0}
.drag-hint.is-hidden{opacity:0}
.webgl-fallback{display:none}
.no-webgl .anatomy-canvas,.no-webgl .flow-layer,.no-webgl .drag-hint{display:none}
.no-webgl .webgl-fallback{display:block;position:absolute;left:50%;top:55%;transform:translate(-50%,-50%);font-size:.9rem;color:var(--muted);text-align:center;max-width:360px}

/* ── PARTS LIST ── */
.parts{padding:120px var(--edge) 110px;background:var(--cream);border-top:1px solid var(--rule)}
.container{max-width:1200px;margin:0 auto}
.parts h2{font-size:clamp(2rem,3.2vw,3rem);font-weight:400;letter-spacing:-.035em;margin-bottom:16px}
.parts-lede{font-size:1rem;font-weight:300;line-height:1.6;color:var(--muted);max-width:460px}
.parts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-top:64px}
.parts-col-head{border-top:1px solid var(--rule);padding-top:18px;margin-bottom:26px}
.parts-col-head h3{font-size:.9rem;font-weight:500}
.parts-col-head p{font-size:.8rem;color:var(--muted);font-weight:300;margin-top:2px}
.part-card{display:flex;gap:16px;padding:14px 12px 16px;margin:0 -12px 8px;border-radius:10px;scroll-margin-top:120px;transition:background .6s ease}
.part-card .num{font-family:var(--mono);font-size:.6rem;color:var(--faint);padding-top:4px;min-width:14px}
.part-card h4{font-size:.9rem;font-weight:500;margin-bottom:6px}
.part-card h4 em{font-style:normal;font-weight:300;color:var(--faint);font-size:.78rem}
.part-card p{font-size:.8rem;font-weight:300;line-height:1.6;color:var(--muted)}
.part-card:target,.part-card.is-flash{background:rgba(196,255,97,.28)}
.part-link{color:var(--ink);font-weight:500;border-bottom:1px solid var(--lime-dark);white-space:nowrap}
.part-link:hover{color:var(--black);border-color:var(--ink)}

/* ── AI NATIVE ── */
.ai-badge{display:inline-flex;align-items:center;height:16px;padding:0 7px;margin-left:8px;border-radius:100px;background:var(--lime);color:var(--black);font-family:var(--mono);font-size:.5rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;vertical-align:2px;white-space:nowrap}
.hero-kicker{display:flex;align-items:center;gap:10px;margin-bottom:18px;font-family:var(--mono);font-size:.58rem;letter-spacing:.2em;text-transform:uppercase;color:var(--faint)}
.hero-kicker .ai-badge,.ai-band-kicker .ai-badge{margin-left:0;vertical-align:0}
.ai-band{padding:120px var(--edge);background:var(--near-black);color:#fff}
.ai-band-kicker{display:flex;align-items:center;gap:10px;margin-bottom:22px;font-family:var(--mono);font-size:.58rem;letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.4)}
.ai-band h2{font-size:clamp(2.2rem,4vw,3.6rem);font-weight:400;letter-spacing:-.035em;line-height:1.04;margin-bottom:20px}
.ai-band .lime{color:var(--lime)}
.ai-band-lede{font-size:1rem;font-weight:300;line-height:1.65;color:rgba(255,255,255,.55);max-width:560px}
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:64px}
.ai-item{display:block;padding:26px 24px 28px;border:1px solid rgba(255,255,255,.1);border-radius:14px;transition:border-color .3s ease,background .3s ease}
.ai-item:hover{border-color:var(--lime);background:rgba(196,255,97,.04)}
.ai-stat{font-size:2.8rem;font-weight:300;letter-spacing:-.04em;color:var(--lime);line-height:1;margin-bottom:18px}
.ai-item h3{font-size:.95rem;font-weight:500;margin-bottom:8px}
.ai-item p{font-size:.82rem;font-weight:300;line-height:1.6;color:rgba(255,255,255,.5)}

/* ── EXPLAINERS (Scout, Case Automation) ── */
.explainer{position:relative;height:560vh;border-top:1px solid var(--rule)}
.explainer-sticky{position:sticky;top:0;height:100vh;min-height:620px;overflow:hidden;background:var(--cream)}
.explainer-head{position:absolute;top:96px;left:var(--edge);max-width:440px;z-index:6}
.explainer-kicker{display:flex;align-items:center;gap:10px;margin-bottom:16px;font-family:var(--mono);font-size:.58rem;letter-spacing:.2em;text-transform:uppercase;color:var(--faint)}
.explainer-kicker .num{color:var(--ink)}
.explainer-head h2{font-size:clamp(1.9rem,3vw,3rem);font-weight:400;line-height:1.05;letter-spacing:-.035em;margin-bottom:14px}
.explainer-head p{font-size:.92rem;font-weight:300;line-height:1.55;color:var(--muted);max-width:400px}
.explainer .stage-list{min-height:84px}
.explainer .chip-col-left{top:50%}
.explainer .chip-col-right{top:40%}
.explainer .chip{transition:opacity .3s ease,border-color .3s ease,background .3s ease}
.explainer .chip.is-dim{opacity:.38}
.explainer .chip.is-hot{border-color:var(--ink);background:var(--lime)}
.explainer .chip.is-dashed{border-style:dashed;color:var(--muted)}
.explainer .chip.is-dashed.is-hot{color:var(--ink)}
.flow-front .story-preview.is-dashed{stroke-dasharray:3 4}
.scene-tag{position:absolute;left:0;top:0;z-index:5;margin-top:-6px;display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border-radius:100px;background:rgba(251,250,246,.92);border:1px solid var(--rule);font-family:var(--mono);font-size:.54rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);white-space:nowrap;opacity:0;transform:translate(-9999px,0);transition:color .25s ease,border-color .25s ease,background .25s ease}
.scene-tag.is-hot{color:var(--ink);border-color:var(--ink);background:#fff}
.scene-tag .ai-dot{width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 1px var(--ink)}

/* ── CTA + FOOTER (shared public look) ── */
.cta{padding:130px var(--edge);background:var(--near-black);text-align:center}
.cta-heading{font-size:clamp(2.2rem,4vw,3.4rem);font-weight:800;color:#fff;letter-spacing:-.03em;line-height:1.08;margin-bottom:20px}
.cta-heading .lime{color:var(--lime)}
.cta-body{font-size:1rem;font-weight:300;color:rgba(255,255,255,.4);max-width:480px;margin:0 auto 40px;line-height:1.7}
.cta-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-solid,.btn-ghost{padding:14px 36px;font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;border-radius:100px;transition:all .35s var(--ease);display:inline-block}
.btn-solid{background:var(--lime);color:var(--black)}
.btn-solid:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(196,255,97,.35)}
.btn-ghost{color:#fff;border:1.5px solid rgba(255,255,255,.15)}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime)}
.footer{padding:72px var(--edge) 40px;background:var(--cream);border-top:1px solid var(--rule)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:56px;max-width:1200px;margin:0 auto 56px}
.footer-brand .mark{font-weight:800;font-size:1.1rem;letter-spacing:-.02em}
.footer-brand p{font-size:.82rem;font-weight:300;line-height:1.7;color:rgba(0,0,0,.4);margin-top:12px;max-width:280px}
.footer-col h4{font-family:var(--mono);font-size:.55rem;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:rgba(0,0,0,.25);margin-bottom:18px}
.footer-col a{display:block;font-size:.82rem;color:rgba(0,0,0,.45);margin-bottom:10px;transition:color .2s ease}
.footer-col a:hover{color:var(--black)}
.footer-bottom{border-top:1px solid var(--rule);padding-top:24px;display:flex;justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;font-size:.7rem;color:rgba(0,0,0,.25)}
.footer-legal{display:flex;gap:20px}
.footer-legal a:hover{color:var(--black)}

/* ── RESPONSIVE ── */
@media (max-height:820px) and (min-width:1101px){
  .callout p{display:none}
  .callouts{gap:6px}
  .anatomy-hero h1{font-size:clamp(1.8rem,2.8vw,2.6rem)}
  .explainer-head h2{font-size:clamp(1.7rem,2.6vw,2.4rem)}
  .explainer-head p{display:none}
}
@media (max-width:1280px){
  :root{--edge:32px}
  .callouts,.callouts-right{width:220px}
  .stage-caption{width:320px}
}
@media (max-width:1100px){
  .callout p{display:none}
  .anatomy-hero{max-width:380px}
  .anatomy-hero p{font-size:.85rem}
  .nav-links{gap:22px}
}
@media (max-width:900px){
  .nav-links{display:none}
  .callouts,.chip-col,.anatomy-eyebrow,.drag-hint{display:none}
  .anatomy-hero{top:78px;right:var(--edge);max-width:none}
  .anatomy-hero h1{font-size:2rem}
  .stage-caption{left:var(--edge);right:var(--edge);width:auto;bottom:22px}
  .parts-grid{grid-template-columns:1fr;gap:12px}
  .explainer-head{top:78px;right:var(--edge);max-width:none}
  .explainer-head h2{font-size:1.9rem}
  .explainer-head p{font-size:.85rem}
  .ai-grid{grid-template-columns:1fr;gap:14px;margin-top:40px}
  .ai-band{padding:90px var(--edge)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:600px){
  :root{--edge:20px}
  .anatomy-hero p,.explainer-head p{display:none}
  .parts{padding:80px var(--edge)}
  .cta{padding:90px var(--edge)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:12px;text-align:center}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .pulse-rings span{animation:none;opacity:.4}
}