/* /watch — a seven-minute autoplay tour of the platform, built for a big screen.
 *
 * One fixed 1600×900 frame, scaled to whatever screen it lands on (a phone, a laptop, the 2.5×4 m
 * LED wall at a fair), so every composition is laid out once in absolute units and simply gets
 * bigger. Black stage, hairline geometry, ONE luminous accent kept for quantum state and live data;
 * white for product chrome; amber for noise and error. The house type: Space Grotesk for display,
 * Inter for reading, JetBrains Mono for anything that is a number, a label or code.
 */
:root{
  --void:#050507; --carbon:#0b0b10; --carbon-2:#111117; --panel:#14141b;
  --ice:#f4f4f6; --mist:rgba(255,255,255,.76); --dim:rgba(255,255,255,.54); --ghost:rgba(255,255,255,.18);
  --line:rgba(255,255,255,.1); --line-2:rgba(255,255,255,.18);
  --q1:#4da6ff; --q2:#8b7bff; --q3:#3ee6c4; --q4:#ffb84d; --q5:#ff7ac6; --err:#ff6b6b;
  --grad:linear-gradient(92deg,var(--q1),var(--q3));
  --grad-warm:linear-gradient(92deg,var(--q4),var(--q5));
  --lab-bg:#0d0f12; --lab-panel:#121519; --lab-line:#23272e; --lab-tx:#e6e9ee; --lab-mu:#929aa6; --lab-accent:#6ee7a8;
  --con-bg:#ffffff; --con-panel:#f6f6f8; --con-line:#e4e4e8; --con-ink:#0a0a0a; --con-mu:#6b6b72;
  --code-kw:#c9a0f5; --code-fn:#7fd3f7; --code-str:#6ee7a8; --code-num:#f0c674; --code-cm:#7d8794;
  --ease:cubic-bezier(.2,.7,.2,1); --ease-in:cubic-bezier(.6,0,.9,.3);
  --W:1600; --H:900; --s:1;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{background:var(--void);color:var(--ice);font-family:'Inter',system-ui,sans-serif;-webkit-font-smoothing:antialiased;overflow:hidden;line-height:1.45}
body.idle{cursor:none}
a{color:inherit;text-decoration:none}
.mono{font-family:'JetBrains Mono',monospace}
.display{font-family:'Space Grotesk','Inter',sans-serif;letter-spacing:-.03em}
::selection{background:var(--q1);color:#000}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ── the stage ─────────────────────────────────────────────────────────────────────────────── */
#stage{position:fixed;inset:0;display:grid;place-items:center;background:var(--void)}
#bg{position:absolute;inset:0;width:100%;height:100%;display:block}
.frame{position:absolute;left:50%;top:50%;width:1600px;height:900px;transform:translate(-50%,-50%) scale(var(--s));transform-origin:center;overflow:hidden;border-radius:0}
.frame>*{position:absolute}
#scene{inset:0;overflow:hidden}
/* film, not slides (2026-09-27): the base cut below is a plain dissolve (a chapter reached by the rail, or with
   reduced motion); every chapter of the running film has its own cut, further down. The director adds a slow
   push-in on top (the `scale` property, so it never fights these). */
#scene .sc{position:absolute;inset:0;opacity:0;transform:scale(.93);filter:blur(7px);transition:opacity 1.1s var(--ease) .38s,transform 1.7s cubic-bezier(.16,.84,.3,1) .32s,filter 1s var(--ease) .38s}
#scene .sc.in{opacity:1;transform:none;filter:none}
#scene .sc.out{opacity:0;transform:scale(1.16);filter:blur(9px);transition:opacity .8s cubic-bezier(.5,0,.75,0),transform 1.15s cubic-bezier(.5,0,.75,0),filter .8s ease-in}
/* ── the cuts: each chapter is cut into its own way (owner, 2026-09-27: "cinematic — every transition its own").
 * mount() gives the incoming scene .x-<kind> and the outgoing one .out.x-<kind>; :not(.in) is where an incoming
 * scene starts, the shared .in rule is where it lands. The light a cut passes through plays on .fx. */
@property --iris{syntax:'<percentage>';inherits:false;initial-value:0%}
/* bloom · open → qubit: the fringes dissolve in light, and the sphere comes out of it */
#scene .sc.x-bloom{transition:opacity 1.4s var(--ease) .6s,transform 2.2s var(--ease) .5s,filter 1.6s var(--ease) .6s}
#scene .sc.x-bloom:not(.in){opacity:0;transform:scale(1.03);filter:blur(10px) brightness(1.7)}
#scene .sc.out.x-bloom{opacity:0;transform:scale(1.02);filter:blur(6px) brightness(2.4);transition:opacity 1s ease-in .2s,filter .9s ease-in,transform 1s ease-in}
/* dolly · qubit → entangle: the camera moves into the sphere; one qubit becomes two */
#scene .sc.x-dolly{transition:opacity 1.2s var(--ease) .55s,transform 1.9s cubic-bezier(.16,.84,.3,1) .5s,filter 1.1s var(--ease) .55s}
#scene .sc.x-dolly:not(.in){opacity:0;transform:scale(.88);filter:blur(6px)}
#scene .sc.out.x-dolly{opacity:0;transform:scale(2.2);filter:blur(8px);transition:transform 1.2s cubic-bezier(.55,0,.85,.25),opacity .75s ease-in .4s,filter .9s ease-in .25s}
/* focus · entangle → console: a focus pull from the physics to the product */
#scene .sc.x-focus{transition:opacity .9s var(--ease) .45s,filter 1.5s var(--ease) .4s}
#scene .sc.x-focus:not(.in){opacity:0;transform:none;filter:blur(24px)}
#scene .sc.out.x-focus{opacity:0;transform:none;filter:blur(24px);transition:filter .9s ease-in,opacity .8s ease-in .25s}
/* pan · console → lab: a whip pan from one window to the other */
#scene .sc.x-pan{transition:opacity .45s var(--ease) .3s,transform 1s cubic-bezier(.12,.75,.25,1) .28s,filter .9s var(--ease) .32s}
#scene .sc.x-pan:not(.in){opacity:0;transform:translateX(36%);filter:blur(14px)}
#scene .sc.out.x-pan{opacity:0;transform:translateX(-36%);filter:blur(14px);transition:transform .7s cubic-bezier(.7,0,.9,.35),opacity .5s ease-in .2s,filter .5s ease-in}
/* iris · lab → copilot: an aperture of light opens on Copilot */
#scene .sc.x-iris{-webkit-mask-image:radial-gradient(circle at 62% 50%,#000 calc(var(--iris) - 16%),transparent var(--iris));mask-image:radial-gradient(circle at 62% 50%,#000 calc(var(--iris) - 16%),transparent var(--iris));transition:--iris 1.9s cubic-bezier(.3,.55,.15,1) .3s,opacity .3s linear .3s}
#scene .sc.x-iris:not(.in){opacity:0;transform:none;filter:none;--iris:0%}
#scene .sc.x-iris.in{--iris:170%}
#scene .sc.out.x-iris{opacity:0;transform:scale(.94);filter:brightness(.4) blur(2px);transition:opacity 1.5s ease .35s,transform 1.8s var(--ease),filter 1.2s ease}
/* leak · copilot → hardware: a light leak sweeps across the frame */
#scene .sc.x-leak{transition:opacity 1s var(--ease) .7s,transform 1.8s var(--ease) .6s}
#scene .sc.x-leak:not(.in){opacity:0;transform:translateX(3%);filter:none}
#scene .sc.out.x-leak{opacity:0;transform:translateX(-3%);filter:none;transition:opacity .8s ease-in .35s,transform 1.4s ease-in}
/* static · hardware → noise: the signal breaks up for a moment — noise has arrived */
#scene .sc.x-static{transition:none;animation:x-static-in 1.1s steps(1) .45s both}
@keyframes x-static-in{0%{opacity:0;filter:saturate(0) contrast(1.4)}20%{opacity:.55;transform:translateX(-6px)}35%{opacity:.15}55%{opacity:.8;transform:translateX(4px);filter:saturate(.3) contrast(1.2)}70%{opacity:.5;transform:none}85%,100%{opacity:1;filter:none;transform:none}}
#scene .sc.out.x-static{transition:none;animation:x-static-out .6s steps(1) both}
@keyframes x-static-out{0%{opacity:1}15%{opacity:.35;transform:translateX(5px);filter:saturate(0) contrast(1.5)}30%{opacity:.9;transform:none}50%{opacity:.2;transform:translateX(-4px)}70%{opacity:.6}100%{opacity:0}}
/* black · noise → qec: a dip to black after "…but physics has an answer" */
#scene .sc.x-black{transition:opacity .9s var(--ease) .75s,transform 1.6s var(--ease) .7s}
#scene .sc.x-black:not(.in){opacity:0;transform:scale(1.02);filter:none}
#scene .sc.out.x-black{opacity:0;transform:none;filter:none;transition:opacity .55s ease-in}
/* tilt · qec → academy: the camera cranes up, from the physics to the people */
#scene .sc.x-tilt{transition:opacity 1s var(--ease) .35s,transform 1.3s cubic-bezier(.15,.7,.25,1) .3s,filter .8s var(--ease) .35s}
#scene .sc.x-tilt:not(.in){opacity:0;transform:translateY(16%);filter:blur(4px)}
#scene .sc.out.x-tilt{opacity:0;transform:translateY(-16%);filter:blur(4px);transition:transform .95s cubic-bezier(.6,0,.8,.3),opacity .7s ease-in .15s,filter .6s ease-in}
/* pull · academy → universities: the camera pulls back from one lesson to a whole university */
#scene .sc.x-pull{transition:opacity 1.1s var(--ease) .4s,transform 1.6s cubic-bezier(.16,.84,.3,1) .35s,filter 1s var(--ease) .4s}
#scene .sc.x-pull:not(.in){opacity:0;transform:scale(1.16);filter:blur(6px)}
#scene .sc.out.x-pull{opacity:0;transform:scale(.78);filter:blur(5px);transition:transform 1.2s cubic-bezier(.5,0,.3,1),opacity .9s ease-in .2s,filter .9s ease-in}
/* dark · universities → use cases: out of the dark, the question everyone has */
#scene .sc.x-dark{transition:opacity 1.3s var(--ease) 1.05s,transform 2.8s var(--ease) 1s}
#scene .sc.x-dark:not(.in){opacity:0;transform:scale(1.07);filter:none}
#scene .sc.out.x-dark{opacity:0;transform:scale(.98);filter:none;transition:opacity .75s ease-in,transform .9s ease-in}
/* glow · use cases → the end: the frame fills with the brand's light and clears on the slogan */
#scene .sc.x-glow{transition:opacity 1.5s var(--ease) .7s,transform 2.2s var(--ease) .6s,filter 1.5s var(--ease) .7s}
#scene .sc.x-glow:not(.in){opacity:0;transform:scale(.97);filter:brightness(1.6) saturate(1.3)}
#scene .sc.out.x-glow{opacity:0;transform:scale(1.03);filter:brightness(1.8);transition:opacity 1.1s ease-in .15s,transform 1.2s ease-in,filter 1s ease-in}
/* fade · into the end card, and the loop back to the start: a slow fade through black */
#scene .sc.x-fade{transition:opacity 1.4s var(--ease) 1.05s}
#scene .sc.x-fade:not(.in){opacity:0;transform:none;filter:none}
#scene .sc.out.x-fade{opacity:0;transform:none;filter:none;transition:opacity 1s ease-in}
/* the light a cut passes through */
.fx{position:absolute;inset:0;z-index:2;pointer-events:none;opacity:0}
/* render mode (the film exported as a video): no controls, no pointer, nothing but the picture and its captions */
body.render .hud-bot .ctl,body.render .paused-badge,body.render .loader,body.render .start,body.render .portrait-hint{display:none!important}
body.render,body.render *{cursor:none!important}
.fx.k-bloom{background:radial-gradient(ellipse at 50% 50%,rgba(235,248,255,.9),rgba(160,220,255,.35) 40%,rgba(0,0,0,0) 75%);mix-blend-mode:screen;animation:fx-bloom 1.9s ease-in-out forwards}
@keyframes fx-bloom{0%{opacity:0}40%{opacity:.85}100%{opacity:0}}
.fx.k-glow{background:radial-gradient(ellipse at 50% 60%,rgba(139,123,255,.55),rgba(62,230,196,.3) 45%,rgba(0,0,0,0) 80%);mix-blend-mode:screen;animation:fx-bloom 2.2s ease-in-out forwards}
.fx.k-leak{background:linear-gradient(100deg,rgba(0,0,0,0) 30%,rgba(255,184,77,.5) 44%,rgba(255,240,220,.8) 50%,rgba(62,230,196,.45) 56%,rgba(0,0,0,0) 70%);background-size:300% 100%;mix-blend-mode:screen;animation:fx-leak 1.7s cubic-bezier(.45,0,.3,1) forwards}
@keyframes fx-leak{0%{opacity:0;background-position:100% 0}15%{opacity:1}85%{opacity:1}100%{opacity:0;background-position:0% 0}}
.fx.k-static{background:repeating-linear-gradient(0deg,rgba(255,255,255,.07) 0 1px,rgba(0,0,0,0) 1px 3px);animation:fx-static 1s steps(1) forwards}
@keyframes fx-static{0%{opacity:.9;transform:translateY(0)}12%{opacity:.2;transform:translateY(-3px)}24%{opacity:1;transform:translateY(2px)}40%{opacity:.4;transform:none}56%{opacity:.8;transform:translateY(-1px)}75%{opacity:.3;transform:none}100%{opacity:0}}
.fx.k-black{background:#000;animation:fx-black 1.6s ease-in-out forwards}
@keyframes fx-black{0%{opacity:0}35%{opacity:1}55%{opacity:1}100%{opacity:0}}
.fx.k-dark{background:#000;animation:fx-dark 2.5s ease-in-out forwards}
@keyframes fx-dark{0%{opacity:0}28%{opacity:1}50%{opacity:1}100%{opacity:0}}
.fx.k-fade{background:#000;animation:fx-fade 2.4s ease-in-out forwards}
@keyframes fx-fade{0%{opacity:0}42%{opacity:1}58%{opacity:1}100%{opacity:0}}
/* a lens and a breath of grain over the picture (under the HUD): the frame reads as filmed, not rendered */
.vignette{inset:0;pointer-events:none;z-index:3;background:radial-gradient(125% 100% at 50% 46%,transparent 58%,rgba(0,0,0,.5) 100%)}
.grain{inset:-40px;pointer-events:none;z-index:3;opacity:.055;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 1.4 -.2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)'/%3E%3C/svg%3E");background-size:240px 240px;animation:grain .8s steps(5) infinite}
@keyframes grain{0%{transform:translate(0,0)}20%{transform:translate(-18px,11px)}40%{transform:translate(13px,-20px)}60%{transform:translate(-9px,-7px)}80%{transform:translate(21px,15px)}100%{transform:translate(0,0)}}

/* ── HUD ───────────────────────────────────────────────────────────────────────────────────── */
.hud{left:0;right:0;pointer-events:none;z-index:5}
.hud-top{top:0;height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 44px}
.brand{display:flex;align-items:center;gap:12px;font-family:'Space Grotesk','Inter',sans-serif;font-weight:700;font-size:19px;letter-spacing:-.02em;color:var(--ice)}
.brand .mark{width:34px;height:34px;border-radius:9px;background:var(--ice);color:#000;display:grid;place-items:center;font-size:16px}
.chap{display:flex;align-items:center;gap:16px;font-family:'JetBrains Mono',monospace;font-size:14px;letter-spacing:2.6px;text-transform:uppercase;color:var(--dim)}
.chap .no{color:var(--ice);font-weight:600}
.chap .sep{width:28px;height:1px;background:var(--ghost)}
.hud-bot{bottom:0;height:84px;padding:0 44px;display:flex;flex-direction:column;justify-content:flex-end;gap:14px;padding-bottom:22px}
.rail{display:flex;gap:6px;pointer-events:auto;transition:opacity .8s var(--ease)}
body.idle .rail{opacity:0;pointer-events:none}
.rail button{flex:1;height:22px;background:transparent;border:0;padding:0;cursor:pointer;position:relative;font:inherit}
.rail button .bar{position:absolute;left:0;right:0;top:9px;height:3px;background:var(--ghost);border-radius:2px;overflow:hidden}
.rail button .bar i{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--ice);border-radius:2px}
.rail button.done .bar i{width:100%;background:var(--dim)}
.rail button .nm{position:absolute;left:0;top:-18px;font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:1.2px;text-transform:uppercase;color:var(--dim);white-space:nowrap;opacity:0;transform:translateY(4px);transition:.25s var(--ease)}
.rail button.on .nm,.rail:hover button .nm{opacity:1;transform:none}
.rail button.on .nm{color:var(--ice)}
.rail button:hover .bar{background:var(--line-2)}
.ctl{display:flex;gap:8px;pointer-events:auto;justify-content:flex-end;transition:opacity .8s var(--ease)}
.ctl button{font:inherit;font-family:'JetBrains Mono',monospace;font-size:12.5px;letter-spacing:1px;text-transform:uppercase;color:var(--mist);background:rgba(255,255,255,.04);border:1px solid var(--line-2);border-radius:8px;padding:8px 13px;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:.15s}
.ctl button:hover{border-color:var(--ice);color:var(--ice)}
.ctl button.on{border-color:rgba(62,230,196,.6);color:var(--q3)}
.ctl button kbd{font:inherit;color:var(--dim);border:1px solid var(--line);border-radius:4px;padding:1px 5px}
body.idle .ctl,body.idle .rail button .nm{opacity:0;transition:opacity .6s}
.paused-badge{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:6;pointer-events:none;font-family:'JetBrains Mono',monospace;font-size:13px;letter-spacing:3px;text-transform:uppercase;color:var(--ice);background:rgba(5,5,7,.7);border:1px solid var(--line-2);border-radius:100px;padding:14px 26px;opacity:0;transition:.2s}
body.paused .paused-badge{opacity:1}

/* ── the HUD's chapter title swaps in when a chapter begins ────────────────────────────────── */
.chap.swap{animation:chapswap .6s var(--ease) both}
@keyframes chapswap{0%{opacity:.2;transform:translateY(6px)}100%{opacity:1;transform:none}}

/* ── shared scene vocabulary ───────────────────────────────────────────────────────────────── */
.kick{font-family:'JetBrains Mono',monospace;font-size:15px;letter-spacing:3px;text-transform:uppercase;color:var(--dim);display:flex;align-items:center;gap:14px}
.kick::after{content:"";height:1px;width:64px;background:linear-gradient(90deg,var(--q1),var(--q3),transparent)}
.h{font-family:'Space Grotesk','Inter',sans-serif;font-weight:700;letter-spacing:-.035em;line-height:1.02;color:var(--ice);text-wrap:balance}
.h.xl{font-size:92px}
.h.lg{font-size:64px}
.h.md{font-size:48px}
.h em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:24px;line-height:1.5;color:var(--mist);max-width:56ch}
.lead b{color:var(--ice);font-weight:600}
.small{font-size:15px;color:var(--dim)}
.gx{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.gw{background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent}
.h em.gw,.line em.gw{background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent}

/* reveal choreography: elements start hidden and .rv-in brings them up; stagger via inline --d */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:var(--d,0s)}
.rv.rv-in{opacity:1;transform:none}
.rv.left{transform:translateX(-26px)}
.rv.scale{transform:scale(.96)}
.rv.rv-out{opacity:0;transform:translateY(-14px);transition-delay:0s;transition-duration:.4s}

/* statement lines: one big sentence at a time */
.lines{display:grid;gap:12px}
.line{font-family:'Space Grotesk','Inter',sans-serif;font-size:38px;font-weight:600;letter-spacing:-.03em;line-height:1.12;color:var(--ice);opacity:.22;transition:opacity .5s var(--ease),transform .5s var(--ease),font-size .5s var(--ease);transform:translateX(0)}
.line.now{opacity:1}
.line.was{opacity:.34;font-size:22px;font-weight:500}
.line.hide{opacity:0;transform:translateX(-14px)}
.line .m{font-family:'JetBrains Mono',monospace;font-weight:500;font-size:.86em;letter-spacing:0;color:var(--q3)}

/* windows (product chrome) */
.win{background:var(--carbon);border:1px solid var(--line-2);border-radius:16px;overflow:hidden;box-shadow:0 40px 120px rgba(0,0,0,.65),0 0 0 1px rgba(255,255,255,.03) inset}
.win .bar{display:flex;align-items:center;gap:8px;height:42px;padding:0 16px;border-bottom:1px solid var(--line);background:var(--carbon-2)}
.win .bar .d{width:11px;height:11px;border-radius:50%;background:var(--ghost)}
.win .bar .f{margin-left:10px;font-family:'JetBrains Mono',monospace;font-size:12.5px;color:var(--dim)}
.win .bar .url{margin-left:auto;font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--dim);background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:7px;padding:5px 12px}
.win.light{background:var(--con-bg);color:var(--con-ink);border-color:rgba(0,0,0,.08)}
.win.light .bar{background:var(--con-panel);border-color:var(--con-line)}
.win.light .bar .d{background:#d8d8dd}
.win.light .bar .f,.win.light .bar .url{color:var(--con-mu)}
.win.light .bar .url{background:#fff;border-color:var(--con-line)}

/* the camera (Camera in watch.js): the viewport crops, the window inside it moves */
.camv{position:relative;overflow:hidden;border-radius:16px;box-shadow:0 40px 120px rgba(0,0,0,.65);min-height:0;height:100%;border:1px solid var(--line-2)}
.camv.light{border-color:rgba(0,0,0,.08)}
.camv>.win{height:100%;box-shadow:none;border:0;border-radius:0}
.cam{transform-origin:0 0;transition-property:transform;transition-timing-function:cubic-bezier(.45,0,.2,1);will-change:transform}

/* code */
pre.code{font-family:'JetBrains Mono',monospace;font-size:14.5px;line-height:1.6;color:var(--lab-tx);white-space:pre;tab-size:4}
pre.code .k{color:var(--code-kw)} pre.code .f{color:var(--code-fn)} pre.code .s{color:var(--code-str)} pre.code .n{color:var(--code-num)} pre.code .c{color:var(--code-cm)}
pre.code .ln{display:inline-block;width:34px;color:var(--ghost);user-select:none;text-align:right;margin-right:22px}
pre.code .cur{display:inline-block;width:2px;height:1.1em;background:var(--lab-accent);vertical-align:-.2em;animation:blink 1s steps(1) infinite}
pre.code .hl{background:rgba(110,231,168,.13);display:inline-block;width:100%;border-radius:4px}
@keyframes blink{50%{opacity:0}}

/* histogram */
.hist{display:flex;align-items:flex-end;gap:14px;height:100%}
.hist .b{flex:1;position:relative;min-height:2px;height:2px;background:var(--ice);border-radius:6px 6px 0 0;transition:height .18s linear}
.hist .b.q{background:var(--grad);background-attachment:fixed}
.hist .b.z{background:var(--ghost)}
.hist .b.warm{background:var(--q4)}
.hist .b .v{position:absolute;left:0;right:0;top:-32px;text-align:center;font-family:'JetBrains Mono',monospace;font-size:17px;color:var(--ice)}
.hist .b .l{position:absolute;left:0;right:0;bottom:-32px;text-align:center;font-family:'JetBrains Mono',monospace;font-size:16px;color:var(--mist)}
.hist .b .l.on{color:var(--ice)}
.hist.light .b{background:var(--con-ink)} .hist.light .b.z{background:#e4e4e8} .hist.light .b .v{color:var(--con-ink)} .hist.light .b .l{color:var(--con-mu)}

/* chips & pills */
.chip{display:inline-flex;align-items:center;gap:8px;font-family:'JetBrains Mono',monospace;font-size:13px;letter-spacing:1px;text-transform:uppercase;color:var(--mist);border:1px solid var(--line-2);border-radius:100px;padding:6px 12px;background:rgba(255,255,255,.03)}
.chip .dot{width:7px;height:7px;border-radius:50%;background:var(--q3);box-shadow:0 0 12px var(--q3)}
.chip .dot.live{animation:pulse 1.6s infinite}
.chip.warm{color:var(--q4);border-color:rgba(255,184,77,.4)}
.chip.warm .dot{background:var(--q4);box-shadow:0 0 12px var(--q4)}
@keyframes pulse{50%{opacity:.35}}
.pill{display:inline-flex;align-items:center;gap:8px;font-family:'JetBrains Mono',monospace;font-size:12.5px;padding:5px 11px;border-radius:100px;border:1px solid var(--line-2);color:var(--mist)}
.pill.ok{color:var(--q3);border-color:rgba(62,230,196,.4)}
.pill.run{color:var(--q1);border-color:rgba(77,166,255,.4)}
.pill.run .dot,.pill.q .dot{width:7px;height:7px;border-radius:50%;background:currentColor;animation:pulse 1.2s infinite}
.pill.ok .dot{width:7px;height:7px;border-radius:50%;background:currentColor}
.pill.q{color:var(--q4);border-color:rgba(255,184,77,.4)}



/* ── generated backdrops (see MEDIA in watch.js): behind everything, masked, never on a data chapter ── */
.bd{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bd video,.bd img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;filter:brightness(1.08) contrast(1.04)}
.bd::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,5,7,.55),rgba(5,5,7,.25) 40%,rgba(5,5,7,.85))}
.bd-open{opacity:.85}
.bd-open::after{background:linear-gradient(180deg,rgba(5,5,7,.4),rgba(5,5,7,.2) 45%,rgba(5,5,7,.74))}
.bd-open video,.bd-open img{-webkit-mask-image:radial-gradient(70% 72% at 50% 52%,#000 28%,transparent 80%);mask-image:radial-gradient(70% 72% at 50% 52%,#000 28%,transparent 80%)}
.bd-outro{opacity:.7}
.bd-outro::after{background:linear-gradient(180deg,rgba(5,5,7,.4),rgba(5,5,7,.2) 45%,rgba(5,5,7,.74))}
.bd-outro video,.bd-outro img{-webkit-mask-image:radial-gradient(60% 70% at 72% 50%,#000 20%,transparent 75%);mask-image:radial-gradient(60% 70% at 72% 50%,#000 20%,transparent 75%)}
.bd-biz{opacity:.42}
.bd-biz video,.bd-biz img{-webkit-mask-image:linear-gradient(180deg,transparent 20%,#000 55%,#000 100%);mask-image:linear-gradient(180deg,transparent 20%,#000 55%,#000 100%)}
.bd-biz::after{background:linear-gradient(180deg,rgba(5,5,7,.6),rgba(5,5,7,.3) 55%,rgba(5,5,7,.85))}
#scene .sc>*:not(.bd):not(.fr){position:relative;z-index:1}

/* ── chapter 0: open ───────────────────────────────────────────────────────────────────────── */
.open{display:grid;place-items:center;text-align:center}
.open .wordmark{display:flex;align-items:center;gap:22px;justify-content:center}
.open .wordmark .mark{width:64px;height:64px;border-radius:16px;background:var(--ice);color:#000;display:grid;place-items:center;font-size:30px}
.open .wordmark span{font-family:'Space Grotesk','Inter',sans-serif;font-size:44px;font-weight:700;letter-spacing:-.03em}
.open .h{margin-top:38px}
.open .lead{margin:26px auto 0;text-align:center}
.motto{display:flex;gap:0;justify-content:center;font-family:'JetBrains Mono',monospace;font-size:20px;letter-spacing:6px;text-transform:uppercase;color:var(--mist)}
.motto span{padding:0 22px;position:relative}
.motto span+span::before{content:"";position:absolute;left:-3px;top:50%;width:6px;height:6px;border-radius:50%;background:var(--q3);transform:translateY(-50%);box-shadow:0 0 10px var(--q3)}
.open-t{position:relative;padding:30px 60px}
.open-t::before{content:"";position:absolute;inset:-90px -200px;background:radial-gradient(closest-side,rgba(5,5,7,.88),rgba(5,5,7,.6) 62%,transparent);z-index:-1}
.fr{position:absolute;inset:0;z-index:0;transition:opacity 1.2s var(--ease)}
.fr.fade{opacity:0}
.fr canvas{position:absolute;inset:0;width:100%;height:100%;-webkit-mask-image:radial-gradient(82% 92% at 50% 50%,#000 46%,transparent 100%);mask-image:radial-gradient(82% 92% at 50% 50%,#000 46%,transparent 100%)}
.fr-wave{position:absolute;inset:0;opacity:0;transition:opacity 2.4s var(--ease);filter:drop-shadow(0 0 8px rgba(62,230,196,.6))}
.fr-wave.on{opacity:.9}
.fr-wave svg{width:100%;height:100%;display:block}
.open .motto{margin-top:26px}
.open .toc{margin-top:40px;display:flex;gap:10px 22px;justify-content:center;flex-wrap:wrap;max-width:1100px}
.open .toc span{font-family:'JetBrains Mono',monospace;font-size:14.5px;letter-spacing:1.8px;text-transform:uppercase;color:var(--dim)}
.open .toc span b{color:var(--mist);font-weight:500;margin-right:8px}

/* ── chapters 1–2: qubit / entanglement ────────────────────────────────────────────────────── */
.qb{display:grid;grid-template-columns:640px 1fr;gap:64px;padding:96px 96px 124px;align-items:center;height:100%}
.qb .sphere{position:relative;width:620px;height:620px}
.qb .sphere canvas{position:absolute;inset:0;width:100%;height:100%}
.qb .sphere .tag{position:absolute;font-family:'JetBrains Mono',monospace;font-size:14px;color:var(--mist);letter-spacing:.5px}
.qb .side{display:grid;gap:20px;align-content:start;align-self:start;margin-top:14px;min-height:0}
.qb .line{font-size:38px}
.qb .line.was{font-size:22px}
.qb .meas{display:flex;flex-wrap:wrap;gap:8px;min-height:40px}
.qb .meas span{width:30px;height:38px;display:grid;place-items:center;font-family:'JetBrains Mono',monospace;font-size:18px;font-weight:600;border:1px solid var(--line-2);border-radius:7px;color:var(--ice);animation:pop .35s var(--ease) both}
.qb .meas span.one{background:var(--ice);color:#000}
.qb .meas span.pair{width:46px}
@keyframes pop{from{transform:scale(.6);opacity:0}}
.qb .plot{height:150px;padding:32px 8px 32px;position:relative}
.qb .foot{display:flex;align-items:center;gap:20px}
.qb .code-chip{font-family:'JetBrains Mono',monospace;font-size:14px;color:var(--lab-tx);background:var(--carbon);border:1px solid var(--line-2);border-radius:10px;padding:10px 16px;display:inline-block;white-space:nowrap;flex:0 0 auto}
.qb .code-chip .k{color:var(--code-kw)} .qb .code-chip .f{color:var(--code-fn)} .qb .code-chip .n{color:var(--code-num)}
.qb.two{grid-template-columns:1fr 1fr;gap:0;padding:96px 80px 124px}
.qb.two .spheres{display:flex;gap:10px;justify-content:center;align-items:center;position:relative}
.qb.two .sphere{width:420px;height:420px}
.qb.two .link{position:absolute;left:50%;top:50%;width:170px;height:2px;transform:translate(-50%,-50%);background:var(--grad);opacity:0;transition:opacity .6s;box-shadow:0 0 20px var(--q1)}
.qb.two .link.on{opacity:1}
.qb.two{position:relative}
.qb.two .left{display:grid;align-content:center;position:relative;min-height:0}
.qb.two .spheres,.qb.two .side{transition:opacity .9s var(--ease),transform .9s var(--ease)}
.qb.two.pw .spheres{opacity:0;transform:scale(.9)}
.qb.two.pw .side{opacity:0;transform:translateX(20px)}
@keyframes breathe{50%{opacity:.62;transform:scale(.9)}}
/* why it matters: your computer and a quantum computer, side by side (owner, 2026-09-27) */
.vs{position:absolute;inset:84px 80px 118px;display:grid;grid-template-rows:auto minmax(0,1fr);gap:16px;opacity:0;transform:translateY(16px);transition:opacity 1s var(--ease),transform 1s var(--ease);pointer-events:none}
.vs.in{opacity:1;transform:none}
.vs-row{display:grid;grid-template-columns:minmax(0,1fr) 72px minmax(0,1fr);min-height:0;transition:grid-template-columns 1.2s var(--ease)}
.vs.wide .vs-row{grid-template-columns:minmax(0,0fr) 0px minmax(0,1fr)}
.vs-p{display:grid;grid-template-rows:auto minmax(0,1fr) auto auto;justify-items:center;align-items:center;gap:14px;padding:24px 26px;border-radius:22px;border:1px solid var(--line);background:rgba(255,255,255,.02);min-width:0;overflow:hidden;transition:opacity .9s var(--ease),border-color .9s,background .9s,box-shadow .9s}
.vs-p.dim{opacity:.32}
.vs-p.qu.on{border-color:rgba(62,230,196,.42);background:rgba(62,230,196,.045);box-shadow:0 0 90px rgba(62,230,196,.12)}
.vs.wide .vs-p.cl,.vs.wide .vs-x{opacity:0}
.vs-x{align-self:center;justify-self:center;font:600 17px 'JetBrains Mono',monospace;letter-spacing:3px;text-transform:uppercase;color:var(--dim);transition:opacity .6s}
.vs-h{display:grid;justify-items:center;gap:6px}
.vs-h .k{font:500 15px 'JetBrains Mono',monospace;letter-spacing:3px;text-transform:uppercase;color:var(--mist);white-space:nowrap}
.vs-h .big{font:700 62px/1 'Space Grotesk','Inter',sans-serif;letter-spacing:-.04em;color:var(--ice);white-space:nowrap}
.vs-h .big small{font-size:.42em;font-weight:600;color:var(--mist);margin-left:8px;letter-spacing:-.01em}
.vs-p.qu .vs-h .big{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.vs-p.qu .vs-h .big small{-webkit-text-fill-color:var(--mist)}
.vs-grid{display:grid;grid-template-columns:repeat(8,38px);gap:9px;align-content:center;justify-content:center}
.vs-grid i{width:38px;height:38px;display:grid;place-items:center;font:500 17px 'JetBrains Mono',monospace;font-style:normal}
.cl .vs-grid i{border-radius:8px;border:1.5px solid rgba(255,255,255,.22);color:var(--ice);background:rgba(255,255,255,.03)}
.qu .vs-grid i{border-radius:50%;border:1.5px solid rgba(255,255,255,.16);transition:background .7s,box-shadow .7s,border-color .7s}
.qu.on .vs-grid i{border-color:transparent;background:radial-gradient(circle,#dffcf5 0 18%,var(--q3) 40%,rgba(62,230,196,0) 72%);box-shadow:0 0 16px rgba(62,230,196,.42);animation:breathe 2.4s ease-in-out infinite}
.qu .vs-grid i:nth-child(3n){animation-delay:-.8s}.qu .vs-grid i:nth-child(3n+1){animation-delay:-1.6s}
.vs-grid.q156{grid-template-columns:repeat(13,24px);gap:7px}
.vs-grid.q156 i{width:24px;height:24px}
.qu.on .vs-grid.q156 i:nth-child(n+65):not(.on){background:none;border-color:rgba(255,255,255,.16);box-shadow:none;animation:none}
.vs-say{font:600 30px/1.2 'Space Grotesk','Inter',sans-serif;letter-spacing:-.02em;text-align:center}
.vs-say em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.vs-of{font:400 19px/1.45 'JetBrains Mono',monospace;color:var(--mist);text-align:center;overflow-wrap:anywhere;max-width:100%}
.vs-of b{color:var(--ice);font-weight:600}
.vs-of sup{font-size:.6em;color:var(--q3)}
.eq{font-family:'JetBrains Mono',monospace;font-size:26px;color:var(--ice);letter-spacing:-.01em}
.eq .g{color:var(--q3)}

/* ── chapter: RoRo Copilot ────────────────────────────────────────────────────────────────── */
@property --ang{syntax:"<angle>";inherits:false;initial-value:0deg}
.cp{position:relative;height:100%}
.cp .side{position:absolute;left:96px;top:176px;width:540px;display:grid;gap:26px;transition:opacity .9s var(--ease),transform .9s var(--ease)}
.cp .side .h.lg{font-size:54px}
.cp .aura{position:absolute;right:96px;top:104px;width:860px;height:670px;border-radius:20px;padding:2px;background:conic-gradient(from var(--ang),rgba(77,166,255,.75),rgba(62,230,196,.6),rgba(139,123,255,.75),rgba(77,166,255,.75));box-shadow:0 0 90px rgba(62,230,196,.16),0 50px 140px rgba(0,0,0,.7);transition:opacity .7s var(--ease),transform 1.6s cubic-bezier(.45,0,.2,1);animation:aura 9s linear infinite}
@keyframes aura{to{--ang:360deg}}
.cp .aura .win{height:100%;border:0;border-radius:18px;display:grid;grid-template-rows:42px minmax(0,1fr) auto}
.cp.wide .side{opacity:0;transform:translateX(-30px)}
.cp.wide .aura{transform:translateX(-560px) scale(.86)}
.cp .surfaces{position:absolute;right:96px;top:140px;width:520px;display:grid;gap:16px;opacity:0;transform:translateX(40px);transition:opacity 1s var(--ease) .4s,transform 1s var(--ease) .4s;pointer-events:none}
.cp.wide .surfaces{opacity:1;transform:none}
.cp .sf{display:grid;grid-template-columns:40px 1fr;gap:16px;align-items:start;padding:20px 22px;border:1px solid var(--line-2);border-radius:16px;background:rgba(11,11,16,.82);opacity:.3;transform:translateY(10px);transition:.6s var(--ease)}
.cp .sf.in{transform:none}
.cp .sf.on{opacity:1;border-color:rgba(62,230,196,.55);box-shadow:0 0 0 1px rgba(62,230,196,.2)}
.cp .sf i{font-size:22px;color:var(--q3);margin-top:4px}
.cp .sf b{font-family:'Space Grotesk','Inter',sans-serif;font-size:25px;letter-spacing:-.02em;color:var(--ice)}
.cp .sf p{font-size:18.5px;color:var(--mist);margin-top:4px;line-height:1.45}
.cp .asks{font-family:'Space Grotesk','Inter',sans-serif;font-size:31px;font-weight:600;letter-spacing:-.02em;line-height:1.2;margin-top:10px;opacity:0;transition:.8s var(--ease)}
.cp .asks.in{opacity:1}
.cp .asks em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.cp .feed{padding:26px 26px 10px;display:flex;flex-direction:column;gap:14px;overflow:hidden;justify-content:flex-end}
.cp .msg{max-width:88%;padding:15px 19px;border-radius:14px;font-size:19px;line-height:1.5;animation:msg .4s var(--ease) both}
.cp .msg.u{align-self:flex-end;background:var(--ice);color:#000;border-bottom-right-radius:5px}
.cp .msg.a{align-self:flex-start;background:var(--panel);border:1px solid var(--line);border-bottom-left-radius:5px;color:var(--ice)}
.cp .msg.a b{color:var(--q3);font-weight:600}
@keyframes msg{from{opacity:0;transform:translateY(10px)}}
.cp .act{display:flex;align-items:center;gap:10px;font-family:'JetBrains Mono',monospace;font-size:14px;color:var(--dim);padding:2px 6px;animation:msg .3s var(--ease) both}
.cp .act i{color:var(--q1);font-size:12px;width:14px;text-align:center}
.cp .composer{margin:12px 22px 20px;border:1px solid var(--line-2);border-radius:12px;padding:14px 16px;display:flex;align-items:center;gap:12px;font-size:18px;color:var(--ice);background:var(--carbon-2);min-height:54px}
.cp .composer .ph{color:var(--dim)}
.cp .composer .send{margin-left:auto;width:34px;height:34px;border-radius:9px;background:var(--ice);color:#000;display:grid;place-items:center;font-size:13px}
.cp .circ{background:#0a0a0f;border:1px solid var(--line);border-radius:10px;padding:10px 14px;animation:msg .4s var(--ease) both;align-self:flex-start;width:360px}
.cp .circ svg{display:block;width:100%;height:auto}
.cp .cmp2{display:grid;grid-template-columns:1fr 1fr;gap:12px;animation:msg .4s var(--ease) both}
.cp .cmp2 .pane{border:1px solid var(--line-2);border-radius:12px;padding:12px 16px 36px;background:var(--carbon-2)}
.cp .cmp2 .pane.q{border-color:rgba(62,230,196,.5)}
.cp .cmp2 .t{font-family:'JetBrains Mono',monospace;font-size:13.5px;letter-spacing:1px;text-transform:uppercase;color:var(--mist);margin-bottom:30px}
.cp .cmp2 .pane.q .t{color:var(--q3)}
.cp .cmp2 .hbox{height:92px}
.cp .chips{display:flex;gap:8px;flex-wrap:wrap;animation:msg .4s var(--ease) both}
.cp .chips span{font-size:16px;border:1px solid var(--line-2);border-radius:100px;padding:8px 15px;color:var(--ice);background:rgba(255,255,255,.04)}

/* ── chapter 4: console ────────────────────────────────────────────────────────────────────── */
.con{padding:84px 72px 104px;height:100%;display:grid;grid-template-rows:auto minmax(0,1fr);gap:20px}
.con .win{display:grid;grid-template-rows:42px minmax(0,1fr);height:100%;min-height:0}
.con .app{display:grid;grid-template-columns:208px minmax(0,1fr) 400px;height:100%;min-height:0}
.con .side{border-right:1px solid var(--con-line);background:var(--con-panel);padding:16px 12px;display:flex;flex-direction:column;gap:3px}
.con .side .b{font-family:'Space Grotesk';font-weight:700;font-size:15px;padding:6px 10px 14px;display:flex;align-items:center;gap:9px}
.con .side .b .mk{width:24px;height:24px;border-radius:7px;background:#000;color:#fff;display:grid;place-items:center;font-size:11px}
.con .side a{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--con-mu);padding:7px 10px;border-radius:8px;font-weight:500}
.con .side a i{width:16px;text-align:center;font-size:13px}
.con .side a.on{background:#000;color:#fff}
.con .side .ws{margin-top:auto;border:1px solid var(--con-line);border-radius:10px;padding:12px;background:#fff}
.con .side .ws .l{font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:1.2px;text-transform:uppercase;color:var(--con-mu)}
.con .side .ws .v{font-family:'Space Grotesk';font-size:18px;font-weight:600;margin-top:4px}
.con .main{padding:22px 26px;display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:16px;min-width:0;min-height:0;position:relative}
.con .result{border:1.5px solid #000;border-radius:14px;padding:18px 22px 40px;background:#fff;display:none;grid-template-columns:minmax(0,1fr) 300px;grid-template-rows:auto minmax(0,1fr) auto;gap:12px 20px;min-height:0}
.con .result .rh{grid-column:1/-1}
.con .result .plot{grid-column:1;grid-row:2}
.con .result .metrics{grid-column:1;grid-row:3}
.con .result .ai{grid-column:2;grid-row:2/4;align-self:stretch;align-content:start}
.con .result .rh{display:flex;align-items:center;justify-content:space-between;font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--con-mu)}
.con .result .rh b{color:#000;font-weight:600}
.con .result .rh .pill{color:#1a7f4b;border-color:#98e0b8}
.con .result .plot{min-height:0;padding:30px 10px 26px}
.con .ph{display:flex;align-items:center;justify-content:space-between}
.con .ph h3{font-family:'Space Grotesk';font-size:22px;letter-spacing:-.02em}
.con .ph .tabs{display:flex;gap:4px;background:var(--con-panel);border-radius:8px;padding:3px}
.con .ph .tabs span{font-size:12.5px;padding:5px 11px;border-radius:6px;color:var(--con-mu);font-weight:500}
.con .ph .tabs span.on{background:#000;color:#fff}
.con .canvas{border:1.5px solid #000;border-radius:14px;padding:22px 22px 18px;background:#fff;position:relative;overflow:hidden}
.con .lane{display:flex;align-items:center;height:64px;position:relative}
.con .lane .lbl{width:52px;font-family:'JetBrains Mono',monospace;font-size:14px;color:#000}
.con .lane .wire{flex:1;height:64px;position:relative}
.con .lane .wire::before{content:"";position:absolute;left:0;right:0;top:50%;height:1.5px;background:#000}
.con .gate{position:absolute;top:50%;transform:translate(-50%,-50%) scale(.4);width:44px;height:44px;border:1.5px solid #000;background:#fff;border-radius:9px;display:grid;place-items:center;font-family:'JetBrains Mono';font-weight:700;font-size:17px;opacity:0;transition:transform .35s var(--ease),opacity .35s}
.con .gate.in{opacity:1;transform:translate(-50%,-50%) scale(1)}
.con .gate.solid{background:#000;color:#fff}
.con .ctrl{position:absolute;top:50%;width:14px;height:14px;border-radius:50%;background:#000;transform:translate(-50%,-50%) scale(0);opacity:0;transition:.35s var(--ease)}
.con .ctrl.in{transform:translate(-50%,-50%) scale(1);opacity:1}
.con .vline{position:absolute;width:1.5px;background:#000;transform-origin:top;transform:scaleY(0);transition:transform .35s var(--ease)}
.con .vline.in{transform:scaleY(1)}
.con .tgt{position:absolute;top:50%;width:28px;height:28px;border-radius:50%;border:1.5px solid #000;background:#fff;transform:translate(-50%,-50%) scale(0);opacity:0;transition:.35s var(--ease)}
.con .tgt.in{transform:translate(-50%,-50%) scale(1);opacity:1}
.con .tgt::before,.con .tgt::after{content:"";position:absolute;background:#000}
.con .tgt::before{left:50%;top:-1px;bottom:-1px;width:1.5px;transform:translateX(-50%)}
.con .tgt::after{top:50%;left:-1px;right:-1px;height:1.5px;transform:translateY(-50%)}
.con .palette{display:flex;gap:8px;flex-wrap:wrap}
.con .palette span{font-family:'JetBrains Mono';font-size:13px;font-weight:600;border:1px solid var(--con-line);border-radius:7px;padding:6px 10px;color:var(--con-ink);background:#fff}
.con .palette span.pick{background:#000;color:#fff;border-color:#000}
.con .rp{border-left:1px solid var(--con-line);background:#fff;display:grid;grid-template-rows:auto auto minmax(0,1fr);min-height:0;min-width:0;overflow:hidden}
.con .rp .sect{padding:12px 18px;border-bottom:1px solid var(--con-line)}
.con .rp .sect .l{font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:1.4px;text-transform:uppercase;color:var(--con-mu);display:flex;justify-content:space-between}
.con .rp pre{font-family:'JetBrains Mono',monospace;font-size:11.5px;line-height:1.5;color:#111;margin-top:8px;white-space:pre}
.con .rp pre .k{color:#7a3fc4} .con .rp pre .f{color:#0b6fb7} .con .rp pre .n{color:#a25d00} .con .rp pre .s{color:#1a7f4b} .con .rp pre .c{color:#8a8a92}
.con .rp .mach{margin-top:8px;display:flex;flex-direction:column;gap:4px}
.con .rp .mach div{display:flex;align-items:center;gap:8px;font-size:12.5px;padding:6px 9px;border:1px solid var(--con-line);border-radius:7px;color:var(--con-ink)}
.con .rp .mach div.on{border-color:#000;background:#000;color:#fff}
.con .rp .mach div .q{margin-left:auto;font-family:'JetBrains Mono';font-size:12px;color:inherit;opacity:.7}
.con .rp .mach div .p{font-family:'JetBrains Mono';font-size:12px;opacity:.85}
.con .rp .run{padding:12px 18px;display:grid;gap:8px;align-content:start}
.con .rp .row{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--con-mu)}
.con .rp .row b{font-family:'JetBrains Mono';font-weight:600;color:#000}
.con .rp .btn{background:#000;color:#fff;font:inherit;font-weight:600;font-size:13.5px;border-radius:9px;padding:10px 14px;text-align:center;display:flex;align-items:center;justify-content:center;gap:9px;transition:.2s}
.con .rp .btn.busy{opacity:.55}
.con .status{display:flex;align-items:center;gap:10px;font-family:'JetBrains Mono';font-size:11.5px;color:var(--con-mu);min-height:22px}
.con .status .pill{color:#000;border-color:#ddd}
.con .status .pill.run{color:#0b6fb7;border-color:#9fd0ff} .con .status .pill.q{color:#a25d00;border-color:#ffd59a} .con .status .pill.ok{color:#1a7f4b;border-color:#98e0b8}
.con .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.con .metrics>div{border:1px solid var(--con-line);border-radius:8px;padding:8px 10px;min-width:0}
.con .metrics .l{font-family:'JetBrains Mono';font-size:10px;letter-spacing:1.2px;text-transform:uppercase;color:var(--con-mu)}
.con .metrics .v{font-family:'JetBrains Mono';font-size:11.5px;font-weight:600;margin-top:3px;color:#000;white-space:nowrap}
.con .top{display:flex;align-items:flex-end;justify-content:space-between;gap:30px}
.con .top .h.md,.lab .top .h.md{font-size:40px}

/* ── chapter 5: lab ────────────────────────────────────────────────────────────────────────── */
.lab{padding:84px 64px 104px;height:100%;display:grid;grid-template-rows:auto minmax(0,1fr);gap:20px}
.lab .win{background:var(--lab-bg);border-color:var(--lab-line);display:grid;grid-template-rows:42px minmax(0,1fr);height:100%;min-height:0}
.lab .camv{border-color:var(--lab-line)}
.lab .win .bar{background:var(--lab-panel);border-color:var(--lab-line)}
.lab .ide{display:grid;grid-template-columns:48px 232px minmax(0,1fr) 380px;height:100%;min-height:0}
.lab .rail-v{border-right:1px solid var(--lab-line);display:flex;flex-direction:column;align-items:center;padding:12px 0;gap:6px;background:var(--lab-panel)}
.lab .rail-v span{width:34px;height:34px;border-radius:8px;display:grid;place-items:center;color:var(--lab-mu);font-size:14px}
.lab .rail-v span.on{background:rgba(110,231,168,.12);color:var(--lab-accent)}
.lab .rail-v .sp{flex:1}
.lab .expl{border-right:1px solid var(--lab-line);padding:14px 10px;background:var(--lab-panel);font-size:13.5px;color:var(--lab-tx)}
.lab .expl .ph{font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:1.4px;text-transform:uppercase;color:var(--lab-mu);padding:4px 8px 10px;display:flex;justify-content:space-between}
.lab .expl .proj{font-weight:600;padding:6px 8px;display:flex;gap:8px;align-items:center}
.lab .expl .fl{display:flex;flex-direction:column;gap:2px;margin-top:4px}
.lab .expl .fl div{display:flex;align-items:center;gap:9px;padding:6px 8px 6px 24px;border-radius:6px;color:var(--lab-mu)}
.lab .expl .fl div i{width:14px;text-align:center;font-size:12px}
.lab .expl .fl div.on{background:rgba(255,255,255,.05);color:var(--lab-tx)}
.lab .expl .fl div.new{color:var(--lab-accent)}
.lab .expl .kern{margin-top:18px;border-top:1px solid var(--lab-line);padding-top:12px;font-family:'JetBrains Mono',monospace;font-size:11.5px;color:var(--lab-mu);display:grid;gap:6px}
.lab .expl .kern b{color:var(--lab-accent);font-weight:500}
.lab .edit{display:grid;grid-template-rows:38px minmax(0,1fr) 230px;min-height:0;min-width:0}
.lab .tabs{display:flex;align-items:stretch;border-bottom:1px solid var(--lab-line);background:var(--lab-panel)}
.lab .tabs span{display:flex;align-items:center;gap:9px;padding:0 18px;font-family:'JetBrains Mono',monospace;font-size:12.5px;color:var(--lab-mu);border-right:1px solid var(--lab-line)}
.lab .tabs span.on{background:var(--lab-bg);color:var(--lab-tx);box-shadow:inset 0 2px 0 var(--lab-accent)}
.lab .tabs .run{margin-left:auto;border:0;padding:0 14px;display:flex;align-items:center}
.lab .tabs .run span{border:0;background:var(--lab-accent);color:#06281a;font-weight:600;border-radius:7px;padding:6px 12px;font-family:'Inter';font-size:13px;display:inline-flex;gap:8px;align-items:center}
.lab .tabs .run span.busy{opacity:.55}
.lab .src{padding:16px 22px;overflow:hidden;min-height:0;min-width:0}
.lab .dock{border-top:1px solid var(--lab-line);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-rows:minmax(0,1fr);min-height:0}
.lab .out{border-right:1px solid var(--lab-line);display:grid;grid-template-rows:32px minmax(0,1fr);min-height:0;min-width:0}
.lab .dh{display:flex;align-items:center;gap:14px;padding:0 16px;font-family:'JetBrains Mono',monospace;font-size:10.5px;letter-spacing:1.4px;text-transform:uppercase;color:var(--lab-mu);border-bottom:1px solid var(--lab-line);background:var(--lab-panel)}
.lab .dh b{color:var(--lab-tx);font-weight:500}
.lab .dh .st{margin-left:auto;display:flex;align-items:center;gap:8px;text-transform:none;letter-spacing:.4px}
.lab .dh .st .dot{width:7px;height:7px;border-radius:50%;background:var(--lab-accent)}
.lab .dh .st .dot.busy{background:var(--q4);animation:pulse 1s infinite}
.lab .out pre{padding:14px 16px;font-family:'JetBrains Mono',monospace;font-size:13.5px;line-height:1.65;color:var(--lab-tx);white-space:pre-wrap;overflow:hidden}
.lab .out pre .m{color:var(--lab-mu)} .lab .out pre .g{color:var(--lab-accent)}
.lab .cv{display:grid;grid-template-rows:32px minmax(0,1fr);min-height:0;min-width:0}
.lab .cv .draw{padding:14px 18px;display:grid;grid-template-rows:minmax(0,1fr) auto;gap:6px;min-height:0;overflow:hidden}
.lab .cv .draw>div:first-child{min-height:0}
.lab .cv svg{width:100%;height:100%;display:block}
.lab .cv .mini{height:74px;display:flex;align-items:flex-end;gap:8px;padding:0 6px 18px}
.lab .cv .mini .b{flex:1;background:var(--lab-accent);border-radius:3px 3px 0 0;min-height:2px;position:relative;transition:height .2s}
.lab .cv .mini .b.z{background:var(--lab-line)}
.lab .cv .mini .b span{position:absolute;bottom:-17px;left:0;right:0;text-align:center;font-family:'JetBrains Mono';font-size:10px;color:var(--lab-mu)}
.lab .cop{border-left:1px solid var(--lab-line);background:var(--lab-panel);display:grid;grid-template-rows:38px minmax(0,1fr) auto;min-height:0;min-width:0}
.lab .cop .ch{display:flex;align-items:center;gap:10px;padding:0 16px;border-bottom:1px solid var(--lab-line);font-size:13px;font-weight:600;color:var(--lab-tx)}
.lab .cop .ch i{color:var(--lab-accent)}
.lab .cop .ch .bal{margin-left:auto;font-family:'JetBrains Mono';font-size:11px;color:var(--lab-mu);font-weight:400}
.lab .cop .feed{padding:16px;display:flex;flex-direction:column;gap:10px;justify-content:flex-end;overflow:hidden;min-height:0}
/* a chat never squeezes its messages: the feed scrolls to the newest, and a change set keeps its Apply button */
.lab .cop .feed>*,.cp .feed>*{flex-shrink:0}
.lab .cop .msg{padding:11px 13px;border-radius:11px;font-size:13.5px;line-height:1.5;animation:msg .35s var(--ease) both;max-width:92%}
.lab .cop .msg.u{align-self:flex-end;background:var(--lab-tx);color:#0d0f12;border-bottom-right-radius:4px}
.lab .cop .msg.a{align-self:flex-start;background:var(--lab-bg);border:1px solid var(--lab-line);color:var(--lab-tx);border-bottom-left-radius:4px}
.lab .cop .act{display:flex;align-items:center;gap:9px;font-family:'JetBrains Mono';font-size:11.5px;color:var(--lab-mu);padding:0 4px;animation:msg .3s var(--ease) both}
.lab .cop .act i{color:var(--q1);width:12px;text-align:center;font-size:10px}
.lab .cop .cs{align-self:stretch;background:var(--lab-bg);border:1px solid var(--lab-line);border-radius:11px;overflow:hidden;animation:msg .4s var(--ease) both}
.lab .cop .cs .t{padding:9px 12px;font-family:'JetBrains Mono';font-size:11px;letter-spacing:1.2px;text-transform:uppercase;color:var(--lab-mu);border-bottom:1px solid var(--lab-line);display:flex;justify-content:space-between}
.lab .cop .cs .t b{color:var(--lab-accent);font-weight:500}
.lab .cop .cs pre{font-family:'JetBrains Mono';font-size:12px;line-height:1.6;padding:10px 12px;white-space:pre;color:var(--lab-tx)}
.lab .cop .cs pre .add{display:block;background:rgba(110,231,168,.14);color:var(--lab-accent)}
.lab .cop .cs pre .del{display:block;background:rgba(255,107,107,.14);color:#ff8a8a}
.lab .cop .cs .acts{display:flex;gap:8px;padding:10px 12px;border-top:1px solid var(--lab-line)}
.lab .cop .cs .acts span{font-size:12.5px;font-weight:600;border-radius:7px;padding:6px 11px;border:1px solid var(--lab-line);color:var(--lab-mu)}
.lab .cop .cs .acts span.ok{background:var(--lab-accent);color:#06281a;border-color:transparent}
.lab .cop .comp{margin:10px 14px 14px;border:1px solid var(--lab-line);border-radius:10px;padding:10px 12px;font-size:13.5px;color:var(--lab-tx);background:var(--lab-bg);min-height:42px;display:flex;align-items:center}
.lab .cop .comp .ph{color:var(--lab-mu)}
.lab .top{display:flex;align-items:flex-end;justify-content:space-between;gap:30px}

/* ── chapter: the machines ─────────────────────────────────────────────────────────────────── */
.hw{padding:86px 96px 124px;height:100%;display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:20px}
.hw .top{display:grid}
.hw .stage{display:grid;grid-template-columns:430px minmax(0,1fr);gap:34px;min-height:0}
.hw .makers{display:grid;grid-template-rows:repeat(4,1fr);gap:14px;min-height:0}
.hw .mk-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px;padding:0 24px;border:1px solid var(--line-2);border-radius:16px;background:rgba(11,11,16,.8);opacity:0;transform:translateX(-16px);transition:.6s var(--ease)}
.hw .mk-row.in{opacity:.5;transform:none}
.hw .mk-row.on{opacity:1;border-color:rgba(62,230,196,.6);background:rgba(18,24,30,.92);box-shadow:0 0 0 1px rgba(62,230,196,.2),0 24px 70px rgba(0,0,0,.5)}
.hw .logo{height:46px;display:flex;align-items:center;gap:14px;color:var(--ice);min-width:0}
.hw .logo.ibm svg{height:34px;width:auto;display:block}
.hw .logo.img img{height:32px;width:auto;display:block}
.hw .logo.img.rigetti img{height:40px}
.hw .logo.img.rigetti span{font-family:'Space Grotesk','Inter',sans-serif;font-weight:600;font-size:30px;letter-spacing:-.02em}
.hw .logo.word{font-family:'Space Grotesk','Inter',sans-serif;font-weight:700;font-size:40px}
.hw .logo.roro{font-family:'Space Grotesk','Inter',sans-serif;font-weight:700;font-size:25px;letter-spacing:-.02em}
.hw .logo.roro .mk{width:42px;height:42px;border-radius:11px;background:var(--ice);color:#000;display:grid;place-items:center;font-size:19px}
.hw .mk-row .qq{font-size:16px;color:var(--mist);white-space:nowrap}
.hw .mk-row .qq b{font-family:'JetBrains Mono',monospace;font-size:34px;color:var(--ice);font-weight:600;margin-right:6px}
.hw .chip-view{position:relative;border-radius:22px;overflow:hidden;background:radial-gradient(90% 80% at 50% 45%,rgba(20,30,44,.9),rgba(7,8,12,.95));border:1px solid var(--line-2);min-height:0}
.hw .chip-view canvas{position:absolute;inset:0 0 110px 0;width:100%;height:calc(100% - 110px)}
.hw .chip-view .cap{position:absolute;left:28px;right:28px;bottom:22px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 20px;align-items:end}
.hw .chip-view .name{font-family:'Space Grotesk','Inter',sans-serif;font-size:32px;font-weight:700;letter-spacing:-.02em}
.hw .chip-view .count{grid-row:1/3;grid-column:2;font-size:18px;color:var(--mist);text-align:right}
.hw .chip-view .count b{display:block;font-family:'JetBrains Mono',monospace;font-size:64px;line-height:1;color:var(--ice);font-weight:600;letter-spacing:-.04em}
.hw .chip-view .sub{font-family:'JetBrains Mono',monospace;font-size:14px;letter-spacing:1.2px;text-transform:uppercase;color:var(--dim)}
.hw .access{font-family:'Space Grotesk','Inter',sans-serif;font-size:30px;line-height:1.25;letter-spacing:-.02em;color:var(--mist);min-height:40px;opacity:0}
.hw .access.in{animation:access .8s var(--ease) both}
@keyframes access{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.hw .access b{color:var(--ice);font-weight:700}

/* ── chapter 7: noise ──────────────────────────────────────────────────────────────────────── */
.nz{padding:104px 96px 132px;height:100%;display:grid;grid-template-columns:560px 1fr;gap:64px;align-items:center}
.nz-stage{position:relative;width:560px;height:560px}
.nz .sphere{position:absolute;left:50px;top:50px;width:460px;height:460px}
.nz .sphere canvas{position:absolute;inset:0;width:100%;height:100%;transition:filter .2s}
/* what disturbs a qubit: each named as it reaches the sphere, radiating toward it */
.nz .dz{position:absolute;display:flex;align-items:center;gap:10px;font:500 17px 'JetBrains Mono',monospace;letter-spacing:.5px;color:var(--dim);padding:9px 14px;border-radius:100px;border:1px solid var(--line);background:rgba(10,10,14,.7);opacity:0;transform:scale(.9);transition:opacity .6s var(--ease),transform .6s var(--ease),color .6s,border-color .6s}
.nz .dz i{font-size:16px}
.nz .dz.t{left:0;top:40px}.nz .dz.r{right:-10px;top:230px}.nz .dz.b{left:24px;bottom:34px}
.nz .dz.on{opacity:1;transform:none;color:var(--q4);border-color:rgba(255,184,77,.5)}
.nz .dz.calm{opacity:.35}
.nz .dz .ring{position:absolute;left:50%;top:50%;width:40px;height:40px;margin:-20px 0 0 -20px;border-radius:50%;border:1.5px solid rgba(255,184,77,.6);opacity:0}
.nz .dz.on:not(.calm) .ring{animation:dz-ring 1.6s ease-out infinite}
@keyframes dz-ring{0%{opacity:.8;transform:scale(.6)}100%{opacity:0;transform:scale(3.2)}}
.nz .side{display:grid;gap:26px}
.nz .cmp{display:grid;grid-template-columns:1fr 1fr;gap:24px;opacity:0;transform:translateY(12px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.nz .cmp.in{opacity:1;transform:none}
.nz .pane{position:relative;border:1px solid var(--line-2);border-radius:14px;padding:18px 18px 40px;background:rgba(255,255,255,.02);height:236px;display:grid;grid-template-rows:auto 1fr}
.nz .pane .t{font-family:'JetBrains Mono',monospace;font-size:13.5px;letter-spacing:1.6px;text-transform:uppercase;color:var(--dim);display:flex;justify-content:space-between;margin-bottom:34px}
.nz .pane .t b{color:var(--ice);font-weight:500}
.nz .pane.warm{border-color:rgba(255,184,77,.35)}
.nz .pane.warm .t b{color:var(--q4)}
/* the wrong outcomes, pointed out: their bars are small (≈2% each), so they are named, and counted */
.nz .wrong{justify-self:end;margin-top:-12px;font:500 17px 'JetBrains Mono',monospace;color:var(--q4);opacity:0;transform:translateY(-6px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.nz .wrong b{color:var(--ice);font-weight:600}
.nz .wrong.in{opacity:1;transform:none}
.nz .cmp.point .pane.warm .hist .b.warm{box-shadow:0 0 0 2px rgba(255,184,77,.85),0 0 18px rgba(255,184,77,.7)}
.nz .line{font-size:30px}
.nz .line:not(.now):not(.was){opacity:0}             /* the next line waits its turn: no spoilers in this chapter */
.nz .line.was{font-size:19px}
.nz .h.lg{font-size:58px}

/* ── chapter 8: error correction ───────────────────────────────────────────────────────────── */
.ec{padding:96px 96px 124px;height:100%;display:grid;grid-template-columns:1fr 760px;gap:60px;align-items:center}
.ec .line{font-size:32px}
.ec .line.was{font-size:19px}
.ec .code-st{position:relative;height:480px}
.ec .dq{position:absolute;top:120px;width:120px;height:120px;border-radius:50%;border:2px solid var(--ice);display:grid;place-items:center;font-family:'JetBrains Mono',monospace;font-size:44px;font-weight:600;color:var(--ice);background:var(--carbon);transition:.35s var(--ease)}
.ec .dq .lbl{position:absolute;top:-34px;font-size:13.5px;letter-spacing:2px;color:var(--dim);font-weight:500}
.ec .dq.flip{background:var(--ice);color:#000;box-shadow:0 0 50px rgba(255,184,77,.35);border-color:var(--q4)}
.ec .dq.hit{animation:hit .5s var(--ease)}
@keyframes hit{30%{transform:scale(1.12)}}
.ec .pc{position:absolute;top:300px;width:64px;height:64px;border-radius:14px;border:1.5px solid var(--line-2);display:grid;place-items:center;font-family:'JetBrains Mono',monospace;font-size:22px;color:var(--dim);background:var(--carbon-2);transition:.3s var(--ease)}
.ec .pc .lbl{position:absolute;bottom:-30px;font-size:12.5px;letter-spacing:2px;color:var(--dim);white-space:nowrap}
.ec .pc.fire{border-color:var(--q4);color:var(--q4);background:rgba(255,184,77,.12);box-shadow:0 0 30px rgba(255,184,77,.35)}
.ec .pl{position:absolute;height:1.5px;background:var(--line-2);transform-origin:left;transition:.3s}
.ec .pl.fire{background:var(--q4)}
.ec .zap{position:absolute;top:60px;font-family:'JetBrains Mono',monospace;font-size:13px;letter-spacing:2px;text-transform:uppercase;color:var(--q4);opacity:0;transition:.3s}
.ec .zap.in{opacity:1}
.ec .dec{position:absolute;left:0;right:0;top:420px;display:flex;justify-content:center}
.ec .dec .box{font-family:'JetBrains Mono',monospace;font-size:16px;letter-spacing:1.2px;color:var(--mist);border:1px solid var(--line-2);border-radius:100px;padding:10px 18px;background:var(--carbon);opacity:0;transform:translateY(8px);transition:.35s var(--ease)}
.ec .dec .box.in{opacity:1;transform:none}
.ec .dec .box b{color:var(--q3);font-weight:500}
.ec .dec .box.bad b{color:var(--err)}
.ec .side{display:grid;gap:22px}
.ec .verdict{font-family:'Space Grotesk';font-size:34px;font-weight:700;letter-spacing:-.03em;min-height:44px;opacity:0;transition:.4s var(--ease)}
.ec .verdict.in{opacity:1}
.ec .verdict.ok{color:var(--q3)} .ec .verdict.bad{color:var(--err)}

/* ── chapter: the Academy ──────────────────────────────────────────────────────────────────── */
.ac{padding:96px 96px 110px;height:100%;display:grid;grid-template-columns:520px 1fr;gap:56px;align-items:center}
.ac .side{display:grid;gap:26px}
.ac .h.lg{font-size:56px}
.ac .afs{display:grid;gap:16px}
.ac .ac-count{font:500 17px/1 'JetBrains Mono',monospace;letter-spacing:.06em;color:var(--dim);margin-top:-8px}
.ac .ac-count b{color:var(--q2);font-weight:600}
.ac .af,.uni .uf{display:grid;grid-template-columns:30px 1fr;gap:14px;align-items:start;font-size:21px;line-height:1.4;color:var(--mist);opacity:0;transform:translateX(-10px);transition:.6s var(--ease)}
.ac .af.in,.uni .uf.in{opacity:1;transform:none}
.ac .af i,.uni .uf i{color:var(--q3);font-size:18px;margin-top:6px}
.ac-stage{position:relative;height:620px}
.ac-stage .links{position:absolute;inset:0;pointer-events:none}
.ac-stage .links svg{width:100%;height:100%}
.ac-stage .links path{fill:none;stroke:var(--q3);stroke-width:2;stroke-dasharray:6 8;opacity:0;transition:opacity .8s}
.ac-stage .links.on1 .l1,.ac-stage .links.on2 .l2{opacity:.7;animation:flow 1.2s linear infinite}
@keyframes flow{to{stroke-dashoffset:-28}}
.ac-stage .lesson{position:absolute;left:0;top:10px;width:470px;background:#fff;color:#0a0a0a;border-radius:16px;box-shadow:0 40px 120px rgba(0,0,0,.65);overflow:hidden;opacity:0;transform:translateY(24px) scale(.97);transition:.7s var(--ease)}
.ac-stage .lesson.in{opacity:1;transform:none}
.ac-stage .lesson .lh{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid #ececf0;font-weight:600;font-size:15px}
.ac-stage .lesson .brand-dot{width:12px;height:12px;border-radius:4px;background:var(--grad)}
.ac-stage .lesson .langs{margin-left:auto;display:flex;gap:6px}
.ac-stage .lesson .langs span{font-family:'JetBrains Mono',monospace;font-size:12px;padding:3px 9px;border-radius:100px;border:1px solid #dcdce2;color:#6b6b72;transition:.3s}
.ac-stage .lesson .langs span.on{background:#000;color:#fff;border-color:#000}
.ac-stage .lesson .lb{padding:18px 22px 22px}
.ac-stage .lesson .k{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:1.2px;text-transform:uppercase;color:#6b6b72}
.ac-stage .lesson h3{font-family:'Space Grotesk','Inter',sans-serif;font-size:32px;letter-spacing:-.02em;margin-top:8px}
.ac-stage .lesson p{font-size:18px;line-height:1.5;color:#2a2a30;margin-top:8px;min-height:54px}
.ac-stage .lesson .steps{display:flex;gap:8px;margin-top:14px}
.ac-stage .lesson .steps span{font-size:14px;font-weight:600;border:1px solid #e2e2e6;border-radius:100px;padding:6px 13px;color:#6b6b72}
.ac-stage .lesson .steps span.on{background:#000;color:#fff;border-color:#000}
.ac-stage .lesson .open-lab{display:inline-flex;margin-top:16px;font-size:15px;font-weight:600;border-radius:9px;padding:9px 15px;background:#0a0a0a;color:#fff;transition:transform .2s,box-shadow .3s}
.ac-stage .lesson .open-lab.press{transform:scale(.95);box-shadow:0 0 0 6px rgba(62,230,196,.35)}
.ac-stage .labmini,.ac-stage .copmini{position:absolute;background:var(--lab-bg);border:1px solid var(--lab-line);border-radius:14px;box-shadow:0 30px 90px rgba(0,0,0,.6);overflow:hidden;opacity:0;transform:translateY(20px);transition:.7s var(--ease)}
.ac-stage .labmini.in,.ac-stage .copmini.in{opacity:1;transform:none}
.ac-stage .labmini{right:0;top:170px;width:400px}
.ac-stage .labmini .lh,.ac-stage .copmini .lh{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--lab-line);font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--lab-mu)}
.ac-stage .labmini .lh i,.ac-stage .copmini .lh i{color:var(--lab-accent)}
.ac-stage .labmini pre{padding:14px 16px;font-size:16px;min-height:96px}
.ac-stage .labmini .mini{height:84px;display:flex;align-items:flex-end;gap:10px;padding:0 18px 26px}
.ac-stage .labmini .mini .b{flex:1;background:var(--lab-accent);border-radius:3px 3px 0 0;position:relative;transition:height .4s}
.ac-stage .labmini .mini .b.z{background:var(--lab-line)}
.ac-stage .labmini .mini .b span{position:absolute;bottom:-20px;left:0;right:0;text-align:center;font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--lab-mu)}
.ac-stage .copmini{left:40px;top:410px;width:440px;padding-bottom:14px}
/* "…the Academy, the Lab and Copilot work as one": the three cards take one light together */
.ac-stage .lesson,.ac-stage .labmini,.ac-stage .copmini{transition:.7s var(--ease),box-shadow 1.2s var(--ease)}
.ac-stage.one .lesson,.ac-stage.one .labmini,.ac-stage.one .copmini{box-shadow:0 0 0 1.5px rgba(62,230,196,.55),0 0 70px rgba(62,230,196,.22),0 30px 90px rgba(0,0,0,.6)}
.ac-stage.one .links path{opacity:1;stroke-width:2.6}
.ac-stage .copmini .u{margin:12px 14px 0 auto;width:fit-content;max-width:88%;background:var(--ice);color:#000;border-radius:11px 11px 4px 11px;padding:9px 13px;font-size:15px}
.ac-stage .copmini p{margin:10px 14px 0;background:var(--carbon-2);border:1px solid var(--lab-line);border-radius:11px 11px 11px 4px;padding:10px 13px;font-size:15.5px;line-height:1.5;color:var(--ice);min-height:44px}
.ac-stage .copmini p b{color:var(--q3)}
.ac-stage .check{position:absolute;left:250px;top:328px;display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:#06281a;background:var(--lab-accent);border-radius:100px;padding:9px 16px;opacity:0;transform:scale(.9);transition:.5s var(--ease)}
.ac-stage .check.in{opacity:1;transform:none}
.ac-stage .certmini{position:absolute;right:10px;top:430px;width:360px;background:#0a0a0a;border:1px solid var(--line-2);border-radius:14px;padding:16px 18px;display:grid;gap:6px;box-shadow:0 30px 90px rgba(0,0,0,.6);opacity:0;transform:translateY(20px);transition:.7s var(--ease)}
.ac-stage .certmini.in{opacity:1;transform:none}
.ac-stage .certmini .k{font-family:'JetBrains Mono',monospace;font-size:11.5px;letter-spacing:1.4px;text-transform:uppercase;color:var(--dim)}
.ac-stage .certmini b{font-family:'Space Grotesk','Inter',sans-serif;font-size:21px}
.ac-stage .certmini span{font-family:'JetBrains Mono',monospace;font-size:12.5px;color:var(--mist)}
.ac-stage .certmini span b{font-family:inherit;font-size:inherit;color:var(--q3);font-weight:500}
.ac-stage .certmini>i{position:absolute;right:16px;top:16px;color:var(--q3);font-size:22px}

/* ── chapter: for universities ─────────────────────────────────────────────────────────────── */
.uni{padding:96px 96px 110px;height:100%;display:grid;grid-template-columns:540px 1fr;gap:56px;align-items:center}
.uni .side{display:grid;gap:26px}
.uni .h.lg{font-size:58px}
.uni .ufs{display:grid;gap:16px}
.uni-stage{position:relative;height:600px}
.uni-stage .join,.uni-stage .teach{position:absolute;left:0;right:0;background:#fff;color:#0a0a0a;border-radius:18px;box-shadow:0 40px 120px rgba(0,0,0,.7);overflow:hidden;transition:.8s var(--ease)}
.uni-stage .join{top:90px;margin:0 70px;padding:28px 30px;display:grid;gap:18px;opacity:0;transform:translateY(24px) scale(.97)}
.uni-stage .join.in{opacity:1;transform:none}
.uni-stage.prof .join{opacity:0;transform:translateY(-30px) scale(.95)}
.uni-stage .join .jh{display:flex;align-items:center;gap:12px;font-family:'Space Grotesk','Inter',sans-serif;font-size:26px;font-weight:700}
.uni-stage .join .jh .mk{width:40px;height:40px;border-radius:10px;background:#0a0a0a;color:#fff;display:grid;place-items:center;font-size:18px}
.uni-stage .join .field{display:flex;align-items:center;gap:12px;border:1.5px solid #0a0a0a;border-radius:12px;padding:14px 16px;font-family:'JetBrains Mono',monospace;font-size:20px;min-height:56px}
.uni-stage .join .field i{color:#6b6b72}
.uni-stage .join .welcome{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;border-radius:14px;padding:16px 18px;background:linear-gradient(135deg,#4b2a8a,#1f5fae);color:#fff;opacity:0;transform:translateY(10px);transition:.7s var(--ease)}
.uni-stage .join.joined .welcome{opacity:1;transform:none}
.uni-stage .join .welcome .crest{width:48px;height:48px;border-radius:12px;background:rgba(255,255,255,.16);display:grid;place-items:center;font-size:22px}
.uni-stage .join .welcome b{display:block;font-size:22px}
.uni-stage .join .welcome div span{font-size:15px;opacity:.85}
.uni-stage .join .welcome .ll{display:flex;gap:6px}
.uni-stage .join .welcome .ll span{font-family:'JetBrains Mono',monospace;font-size:12px;border:1px solid rgba(255,255,255,.45);border-radius:100px;padding:3px 9px}
.uni-stage .teach{top:0;opacity:0;transform:translateY(30px) scale(.97)}
.uni-stage.prof .teach{opacity:1;transform:none}
.uni .teach .th{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;background:linear-gradient(135deg,#4b2a8a,#1f5fae);color:#fff;font-weight:600;font-size:17px}
.uni .teach .org{display:flex;align-items:center;gap:10px}
.uni .teach .sw{width:14px;height:14px;border-radius:4px;background:#fff}
.uni .teach .url{font-family:'JetBrains Mono',monospace;font-size:12.5px;opacity:.8;font-weight:400}
.uni .teach .tabs{display:flex;gap:4px;padding:10px 16px;background:#f6f6f8;border-bottom:1px solid #e6e6ea}
.uni .teach .tabs span{font-size:15px;padding:7px 13px;border-radius:7px;color:#6b6b72;font-weight:500;transition:.3s}
.uni .teach .tabs span.on{background:#000;color:#fff}
.uni .teach .tbl{padding:6px 16px}
.uni .teach .row{display:grid;grid-template-columns:110px 1fr 210px 70px;gap:14px;align-items:center;padding:9px 4px;border-bottom:1px solid #f0f0f3;font-size:16px;opacity:0;transform:translateY(6px);transition:.4s var(--ease)}
.uni .teach .row.in,.uni .teach .row.hd{opacity:1;transform:none}
.uni .teach .row.hd{font-family:'JetBrains Mono',monospace;font-size:11.5px;letter-spacing:1.2px;text-transform:uppercase;color:#6b6b72}
.uni .teach .pg{height:7px;background:#ececf0;border-radius:4px;overflow:hidden}
.uni .teach .pg i{display:block;height:100%;background:#0a0a0a;border-radius:4px}
.uni .teach .rn{font-family:'JetBrains Mono',monospace;font-size:13px;color:#3a3a40}
.uni .teach .ex{font-family:'JetBrains Mono',monospace;font-size:12.5px;text-transform:uppercase;letter-spacing:1px;text-align:right}
.uni .teach .ex.passed{color:#1a7f4b}
.uni .teach .ex.open{color:#a25d00}
.uni .teach .exam,.uni .teach .assist{margin:12px 16px;border-radius:12px;padding:13px 16px;opacity:0;transform:translateY(8px);transition:.5s var(--ease)}
.uni .teach .exam.in,.uni .teach .assist.in{opacity:1;transform:none}
.uni .teach .exam{border:1.5px solid #000}
.uni .teach .exam .t,.uni .teach .assist .t{display:flex;gap:10px;align-items:center;font-weight:600;font-size:17px}
.uni .teach .exam .w{font-family:'JetBrains Mono',monospace;font-size:14px;color:#3a3a40;margin-top:6px}
.uni .teach .assist{border:1px solid #cfe9df;background:#f4fbf8}
.uni .teach .assist .t{color:#1a7f4b}
.uni .teach .assist p{font-size:16px;color:#1c1c22;margin-top:6px}
.uni .teach .assist .btns{display:flex;gap:8px;margin-top:10px}
.uni .teach .assist .btns span{font-size:14.5px;font-weight:600;border:1px solid #d6d6dc;border-radius:8px;padding:6px 12px;color:#3a3a40}
.uni .teach .assist .btns span.ok{background:#000;color:#fff;border-color:#000}

/* ── chapter 12: outro ─────────────────────────────────────────────────────────────────────── */
.outro{display:grid;grid-template-columns:1fr 420px;gap:80px;padding:140px 120px 160px;align-items:center;height:100%}
.outro .slogan{font-family:'Space Grotesk','Inter',sans-serif;font-size:88px;font-weight:700;letter-spacing:-.045em;line-height:1}
.outro .slogan em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.outro .motto{justify-content:flex-start;margin-top:22px;font-size:18px}
.outro .motto span:first-child{padding-left:0}
/* the motto lights word by word as the narrator says it */
.outro .motto span{transition:color .5s var(--ease),text-shadow .5s var(--ease)}
.outro .motto span.lit{color:var(--ice);text-shadow:0 0 18px rgba(62,230,196,.55)}
.outro .url{transition:text-shadow .8s var(--ease)}
.outro .url.lit{text-shadow:0 0 36px rgba(139,123,255,.45)}
.outro .url{font-family:'Space Grotesk','Inter',sans-serif;font-size:56px;font-weight:700;letter-spacing:-.045em;line-height:1}
.outro .url em{font-style:normal;color:var(--dim)}
.outro .cta{margin-top:34px;display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.outro .btn{display:inline-flex;align-items:center;gap:12px;font-weight:600;font-size:19px;padding:18px 28px;border-radius:12px;background:var(--ice);color:#000}
.outro .btn.line{background:transparent;color:var(--ice);border:1.5px solid var(--line-2)}
.outro .qr{background:#fff;border-radius:22px;padding:28px;display:grid;gap:16px;justify-items:center;box-shadow:0 40px 120px rgba(0,0,0,.7)}
.outro .qr svg{width:300px;height:300px;display:block}
.outro .qr span{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:1.6px;text-transform:uppercase;color:#6b6b72}
.outro .event{margin-top:40px;display:inline-flex;align-items:center;gap:12px;font-family:'JetBrains Mono',monospace;font-size:13px;letter-spacing:1px;color:var(--mist);border:1px solid var(--line-2);border-radius:100px;padding:10px 18px}
.outro .event .dot{width:8px;height:8px;border-radius:50%;background:var(--q3);box-shadow:0 0 12px var(--q3)}
.outro .made{margin-top:26px;font-size:17px;line-height:1.5;color:var(--dim);max-width:60ch}

/* ── console: Copilot reads the result ─────────────────────────────────────────────────────── */
.con .result .ai{margin-top:0;border:1px solid #cfe9df;background:#f4fbf8;border-radius:10px;padding:12px 14px;display:grid;gap:8px;opacity:0;transform:translateY(8px);transition:.45s var(--ease)}
.con .result .ai.in{opacity:1;transform:none}
.con .result .ai .t{display:flex;align-items:center;gap:8px;font-family:'JetBrains Mono';font-size:10.5px;letter-spacing:1.4px;text-transform:uppercase;color:#1a7f4b}
.con .result .ai p{font-size:14.5px;line-height:1.55;color:#1c1c22;min-height:38px}
.con .result .ai p b{color:#000}

/* ── chapter: use cases — one story at a time, like title cards ──────────────────────────── */
.ucs{padding:86px 96px 96px;height:100%;display:grid;grid-template-rows:auto minmax(0,1fr) auto auto;gap:18px}
.ucs .top{display:grid;gap:4px}
.ucs .top .h.md{font-size:54px}
.ucs .lead2{font-family:'Space Grotesk','Inter',sans-serif;font-size:28px;font-weight:500;color:var(--mist);margin-top:10px;opacity:0;transform:translateY(8px);transition:.8s var(--ease)}
.ucs .lead2.in{opacity:1;transform:none}
.ucs .lead2 em{font-style:normal;color:var(--ice);font-weight:700}
.ucs .reel{position:relative;min-height:0}
.ucs .story,.ucs .how{position:absolute;inset:0;display:grid;align-content:center;gap:12px;opacity:0;transform:translateY(26px) scale(.98);transition:opacity 1s var(--ease),transform 1.2s var(--ease),filter 1s var(--ease);filter:blur(4px)}
.ucs .story.on,.ucs .how.in{opacity:1;transform:none;filter:none}
.ucs .story.was{opacity:0;transform:translateY(-26px) scale(.99);filter:blur(4px)}
.ucs .story .sk{display:flex;align-items:center;gap:14px;font-family:'JetBrains Mono',monospace;font-size:18px;letter-spacing:3px;text-transform:uppercase;color:var(--q3)}
.ucs .story .sk i{font-size:24px}
.ucs .story .fact{font-family:'Space Grotesk','Inter',sans-serif;font-size:132px;font-weight:700;letter-spacing:-.05em;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.ucs .story .fact sup{font-size:.5em;vertical-align:.8em}
.ucs .story .fl{font-family:'Space Grotesk','Inter',sans-serif;font-size:32px;font-weight:600;letter-spacing:-.02em;color:var(--ice);max-width:28ch}
.ucs .story p{font-size:22px;line-height:1.5;color:var(--mist);max-width:52ch}
.ucs .how{font-family:'Space Grotesk','Inter',sans-serif;font-size:46px;font-weight:600;letter-spacing:-.025em;line-height:1.2;max-width:26ch}
.ucs .how b{color:var(--mist);font-weight:600}
.ucs .how em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.ucs .recap{display:flex;gap:12px;opacity:0;transition:opacity .8s}
.ucs .recap.in{opacity:1}
.ucs .recap span{display:inline-flex;align-items:center;gap:10px;font-size:17px;color:var(--dim);border:1px solid var(--line);border-radius:100px;padding:8px 16px;transition:.5s}
.ucs .recap span.on{color:var(--ice);border-color:var(--line-2)}
.ucs .recap span i{color:var(--q3)}
.ucs .honest{display:flex;align-items:center;gap:16px;font-size:21px;line-height:1.4;color:var(--mist);border:1px solid var(--line-2);border-radius:14px;padding:14px 22px;background:rgba(11,11,16,.84);opacity:0;transform:translateY(10px);transition:.7s var(--ease)}
.ucs .honest.in{opacity:1;transform:none}
.ucs .honest i{color:var(--q3);font-size:20px}
.ucs .honest b{color:var(--ice)}

/* ── /watch/film only: the end credits ────────────────────────────────────────────────────── */
.fin{display:grid;place-content:center;justify-items:center;text-align:center;gap:30px;height:100%;padding:0 200px}
.fin .wordmark{display:flex;align-items:center;gap:20px}
.fin .wordmark .mark{width:60px;height:60px;border-radius:15px;background:var(--ice);color:#000;display:grid;place-items:center;font-size:28px}
.fin .wordmark span{font-family:'Space Grotesk','Inter',sans-serif;font-size:44px;font-weight:700;letter-spacing:-.03em}
.fin p{font-size:22px;line-height:1.6;color:var(--mist);max-width:62ch}
.fin .motto{font-size:17px}
.fin .url{font-family:'Space Grotesk','Inter',sans-serif;font-size:64px;font-weight:700;letter-spacing:-.04em}
.fin .url em{font-style:normal;color:var(--dim)}

/* ── the director's cards: preparing sound, captions, the film's start card ────────────────── */
.loader{left:50%;bottom:120px;transform:translate(-50%,10px);z-index:6;display:flex;align-items:center;gap:14px;padding:12px 20px;border:1px solid var(--line-2);border-radius:100px;background:rgba(8,8,12,.84);font-family:'JetBrains Mono',monospace;font-size:14px;letter-spacing:1.5px;text-transform:uppercase;color:var(--mist);opacity:0;pointer-events:none;transition:opacity .5s,transform .5s}
.loader.on{opacity:1;transform:translate(-50%,0)}
.loader .sp{width:14px;height:14px;border-radius:50%;border:2px solid var(--line-2);border-top-color:var(--q3);animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.loader .bar{width:120px;height:3px;background:var(--ghost);border-radius:2px;overflow:hidden}
.loader .bar i{display:block;height:100%;width:0;background:var(--q3);transition:width .3s}
.cc{left:0;right:0;bottom:0;height:94px;display:flex;align-items:center;justify-content:center;padding:0 150px;z-index:6;border-top:1px solid rgba(255,255,255,.18);background:linear-gradient(180deg,rgba(5,5,7,.8),rgba(5,5,7,.97));opacity:0;transition:opacity .4s;pointer-events:none}
body.cc-on .cc{opacity:1}
.cc .tx{font-family:'Inter',system-ui,sans-serif;font-size:27px;font-weight:500;line-height:1.3;color:#fff;text-align:center;text-wrap:balance;opacity:0;transition:opacity .3s}
.cc .tx.on{opacity:1}
body.cc-on .hud-bot{bottom:94px}
.start{inset:0;z-index:8;display:grid;place-content:center;justify-items:center;gap:22px;background:radial-gradient(60% 60% at 50% 50%,rgba(12,14,20,.55),rgba(5,5,7,.97));transition:opacity .9s var(--ease)}
.start.gone{opacity:0;pointer-events:none}
.start .wordmark{display:flex;align-items:center;gap:20px}
.start .wordmark .mark{width:64px;height:64px;border-radius:16px;background:var(--ice);color:#000;display:grid;place-items:center;font-size:30px}
.start .wordmark span{font-family:'Space Grotesk','Inter',sans-serif;font-size:50px;font-weight:700;letter-spacing:-.03em}
.start .sub{font-family:'JetBrains Mono',monospace;font-size:15px;letter-spacing:2.4px;text-transform:uppercase;color:var(--mist)}
.start .play{margin-top:18px;font-family:'Space Grotesk','Inter',sans-serif;font-size:26px;font-weight:600;display:inline-flex;align-items:center;gap:16px;padding:20px 38px;border-radius:100px;border:0;background:var(--ice);color:#000;cursor:pointer;box-shadow:0 0 60px rgba(62,230,196,.25);transition:transform .2s}
.start .play:hover{transform:scale(1.03)}
.start .play i{font-size:20px}
.start .mute{font-family:'Inter',sans-serif;font-size:17px;color:var(--mist);background:none;border:0;cursor:pointer;text-decoration:underline;text-underline-offset:4px}
.start .prep{font-family:'JetBrains Mono',monospace;font-size:13px;letter-spacing:1.4px;text-transform:uppercase;color:var(--dim)}

/* ── /watch/film: the same scenes without the kiosk's chrome — no numbers, no titles, no rail ── */
body.film .hud-top,body.film .rail,body.film .chap-kick{display:none}
body.film .loader{bottom:60px}

/* ── tablets: the frame scales to ~0.64, so its small print steps up a size ────────────────── */
.compact .chap{font-size:17px}
.compact .brand{font-size:22px}
.compact .kick{font-size:18px}
.compact .ctl button{font-size:15px;padding:10px 15px}
.compact .cc .tx{font-size:32px}
.compact .cc{height:110px}
.compact .loader{font-size:17px}
.compact .hist .b .v{font-size:20px}
.compact .hist .b .l{font-size:19px}

/* ── portrait / tiny screens: the frame letterboxes; hint that it wants a wide screen ─────── */
.portrait-hint{position:fixed;left:16px;right:16px;bottom:16px;z-index:9;display:none;font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--mist);text-align:center;background:rgba(5,5,7,.8);border:1px solid var(--line-2);border-radius:10px;padding:10px 14px}
@media (orientation:portrait) and (max-width:820px){.portrait-hint{display:block}}

@media (prefers-reduced-motion: reduce){
  .rv,.line,.hw .mk-row,.ac-stage>*,.uni-stage>*,.uni .uf,.ac .af,.ucs .story,.ucs .how,.con .gate,.con .ctrl,.con .tgt,.cam,.cp .aura,.cp .surfaces,.vs,.vs-p,.vs-row,#scene .sc{transition-duration:.01s}
  .vs-grid i{animation:none}
  .cp .aura{animation:none}
  .chip .dot.live,.pill .dot,.card-title.show{animation-duration:.01s}
  .grain{animation:none}
  #scene .sc,#scene .sc.out{filter:none}
}