/* Matvision · scroll-driven walk through the machine. Everything is scoped to .mv-m3d so the section can sit in any page.
   The section is tall (--m3d-length); its stage is pinned (sticky) while the visitor scrolls through it. */
.mv-m3d{
  --bg:#05080a; --ink:#e6ece9; --dim:#8a9a94; --line:rgba(144,227,119,.28);
  --green:#008b29; --light:#90e377; --sans:'IBM Plex Sans',system-ui,sans-serif; --mono:'IBM Plex Mono',Consolas,monospace;
  --m3d-length:1200vh;
  position:relative;height:var(--m3d-length);background:var(--bg);color:var(--ink);font-family:var(--sans);margin:0;padding:0;
}
.mv-m3d *{box-sizing:border-box}
.mv-m3d .m3d-stage{position:sticky;top:0;height:100vh;height:100dvh;overflow:hidden;background:var(--bg)}
.mv-m3d .m3d-strings{display:none}
.mv-m3d #m3d-gl{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:0}
.mv-m3d #m3d-leaders{position:absolute;inset:0;width:100%;height:100%;z-index:2;pointer-events:none}
.mv-m3d #m3d-tags{position:absolute;inset:0;z-index:3;pointer-events:none;overflow:hidden}

/* ---------- story panels ---------- */
.mv-m3d .m3d-story{position:absolute;inset:0;z-index:4;pointer-events:none}
.mv-m3d .chapter{position:absolute;left:clamp(16px,6vw,96px);top:50%;width:min(440px,calc(100% - 32px));margin:0;
  transform:translateY(-50%);opacity:0;transition:none;will-change:opacity,transform}
.mv-m3d .chapter .m3d-title{font-weight:300;font-size:clamp(44px,6.4vw,92px);letter-spacing:-.045em;line-height:1;margin:0 0 22px;color:var(--ink)}
.mv-m3d .chapter h2{font-family:var(--sans);font-weight:400;font-size:clamp(28px,3.1vw,44px);letter-spacing:-.035em;line-height:1.08;margin:0 0 18px;color:var(--ink)}
.mv-m3d .chapter p{font-size:16px;line-height:1.6;color:#c5d0cb;margin:0 0 16px;max-width:420px}
.mv-m3d .chapter .eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--light);margin-bottom:18px}
.mv-m3d .chapter .eyebrow::before{content:"";display:inline-block;width:26px;height:1px;background:var(--light);vertical-align:middle;margin-right:12px}
.mv-m3d .chapter:not(.intro){padding:26px 28px;background:linear-gradient(120deg,rgba(6,12,11,.72),rgba(6,12,11,.38));
  border:1px solid rgba(144,227,119,.16);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.mv-m3d .chips{list-style:none;padding:0;margin:18px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.mv-m3d .chips li{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;border:1px solid var(--line);padding:6px 9px;color:var(--light);margin:0}
.mv-m3d .scroll-cue{font-family:var(--mono);font-size:12px!important;letter-spacing:.16em;text-transform:uppercase;color:var(--dim)!important;margin-top:40px!important;display:flex;align-items:center;gap:14px}
.mv-m3d .scroll-cue span{width:1px;height:46px;background:linear-gradient(var(--light),transparent);animation:m3d-cue 2.2s ease-in-out infinite;transform-origin:top}
@keyframes m3d-cue{0%{transform:scaleY(0)}50%{transform:scaleY(1)}100%{transform:scaleY(0);transform-origin:bottom}}
.mv-m3d .final{left:auto;right:clamp(16px,5vw,80px);width:min(460px,calc(100% - 32px))}
.mv-m3d .kpis{display:grid;grid-template-columns:1fr 1fr 1fr;gap:0;margin:22px 0 26px;border-top:1px solid var(--line)}
.mv-m3d .kpis div{padding:14px 12px 0 0}
.mv-m3d .kpis div+div{padding-left:12px;border-left:1px solid var(--line)}
.mv-m3d .kpis b{display:block;font-weight:400;font-size:22px;letter-spacing:-.03em;color:#fff}
.mv-m3d .kpis span{display:block;font-size:12px;line-height:1.4;color:var(--dim);margin-top:6px}
/* Les deux boutons font la meme boite : le plein porte une bordure transparente, sinon le
   contour de l autre le rend plus haut d un pixel de chaque cote. Cote a cote ils se
   partagent la rangee a parts egales ; empiles, ils prennent la meme largeur. Un bouton
   seul garde sa largeur naturelle. */
.mv-m3d .cta{pointer-events:auto;display:inline-block;background:var(--green);color:#fff;text-decoration:none;padding:15px 22px;font-size:15px;border:1px solid transparent;box-sizing:border-box;text-align:center}
.mv-m3d .cta:hover{background:#00a332;color:#fff}
.mv-m3d .cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:stretch}
.mv-m3d .cta-row:has(.cta + .cta) .cta{flex:1 1 240px}
.mv-m3d .cta.ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}
.mv-m3d .cta.ghost:hover{border-color:var(--light);background:rgba(144,227,119,.08)}

/* ---------- HUD ---------- */
.mv-m3d .m3d-hud{position:absolute;inset:0;z-index:5;pointer-events:none;font-family:var(--mono);color:var(--dim);font-size:11px;letter-spacing:.12em}
.mv-m3d .hud-corner{position:absolute;width:22px;height:22px;border-color:rgba(144,227,119,.45);border-style:solid;border-width:0}
.mv-m3d .hud-corner.tl{top:16px;left:16px;border-top-width:1px;border-left-width:1px}
.mv-m3d .hud-corner.tr{top:16px;right:16px;border-top-width:1px;border-right-width:1px}
.mv-m3d .hud-corner.bl{bottom:16px;left:16px;border-bottom-width:1px;border-left-width:1px}
.mv-m3d .hud-corner.br{bottom:16px;right:16px;border-bottom-width:1px;border-right-width:1px}
.mv-m3d .hud-top{position:absolute;top:26px;left:48px;display:flex;gap:12px;align-items:center}
.mv-m3d .hud-brand{color:var(--ink)}
.mv-m3d #m3d-hud-chapter{color:var(--light)}
.mv-m3d .hud-stats{position:absolute;top:24px;right:48px;display:flex;gap:28px;text-align:right}
.mv-m3d .hud-stats div{display:flex;flex-direction:column;gap:4px}
.mv-m3d .hud-stats .v{color:var(--ink);font-size:15px;letter-spacing:.04em;font-variant-numeric:tabular-nums}
.mv-m3d .hud-progress{position:absolute;left:48px;right:48px;bottom:28px;height:1px;background:rgba(255,255,255,.12)}
.mv-m3d #m3d-hud-bar{height:1px;width:0;background:var(--light);box-shadow:0 0 8px var(--light)}
.mv-m3d #m3d-hud-ticks{list-style:none;margin:0;padding:0}
.mv-m3d #m3d-hud-ticks li{position:absolute;top:-4px;width:1px;height:9px;background:rgba(255,255,255,.25);margin:0}
.mv-m3d #m3d-hud-ticks li span{position:absolute;top:-18px;left:-4px;white-space:nowrap;font-size:10px;color:rgba(255,255,255,.35)}
.mv-m3d #m3d-hud-ticks li.on{background:var(--light)}
.mv-m3d #m3d-hud-ticks li.on span{color:var(--light)}

/* ---------- piece tags (sensing / classes) ---------- */
.mv-m3d .tag{position:absolute;left:0;top:0;font-family:var(--mono);font-size:10px;letter-spacing:.08em;white-space:nowrap;text-transform:uppercase;
  color:#fff;padding:3px 6px 3px 8px;border-left:2px solid currentColor;background:rgba(5,8,10,.55);opacity:0;will-change:transform,opacity}
.mv-m3d .tag b{font-weight:500;color:inherit}
.mv-m3d .tag i{font-style:normal;color:#c9d4cf;margin-left:6px}

/* ---------- final callouts ---------- */
.mv-m3d .callout{position:absolute;left:0;top:0;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink);
  padding:8px 10px;border:1px solid var(--line);background:rgba(5,10,9,.7);opacity:0;white-space:nowrap}
.mv-m3d .callout small{display:block;font-family:var(--sans);text-transform:none;letter-spacing:0;font-size:12px;color:var(--dim);margin-top:3px}
.mv-m3d #m3d-leaders line{stroke:rgba(144,227,119,.7);stroke-width:1}
.mv-m3d #m3d-leaders circle{fill:var(--light)}

/* ---------- AI model: prediction read-out ---------- */
.mv-m3d .pred{position:absolute;left:0;top:0;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:var(--ink);opacity:0;
  padding:10px 12px 8px;border:1px solid rgba(144,227,119,.35);background:rgba(4,9,8,.72);min-width:250px;will-change:transform,opacity}
.mv-m3d .pred .ph{color:var(--light);margin-bottom:8px}
.mv-m3d .pred .pr{display:grid;grid-template-columns:150px 70px 34px;white-space:nowrap;align-items:center;gap:8px;margin:5px 0;color:#c9d4cf}
.mv-m3d .pred .pr i{display:block;height:4px;background:rgba(255,255,255,.08)}
.mv-m3d .pred .pr u{display:block;height:4px;width:0;background:currentColor;text-decoration:none}
.mv-m3d .pred .pr em{font-style:normal;text-align:right}
.mv-m3d .pred .pr.top{color:#ff7a45}
.mv-m3d .pred .pr.top span{color:#fff}
.mv-m3d .ailabel{position:absolute;left:0;top:0;font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--light);opacity:0;white-space:nowrap}

/* ---------- loader ---------- */
.mv-m3d #m3d-loader{position:absolute;inset:0;z-index:10;background:var(--bg);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;transition:opacity .8s}
.mv-m3d #m3d-loader.done{opacity:0;pointer-events:none;visibility:hidden;transition:opacity .8s,visibility 0s .8s}
.mv-m3d .ld-label{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--dim)}
.mv-m3d .ld-bar{width:220px;height:1px;background:rgba(255,255,255,.12)}
.mv-m3d #m3d-ld-fill{height:1px;width:0;background:var(--light)}

@media (max-width:800px){
  .mv-m3d .chapter{top:auto;bottom:56px;transform:none}
  .mv-m3d .chapter:not(.intro){padding:18px 18px}
  .mv-m3d .chapter h2{font-size:24px;margin-bottom:10px}
  .mv-m3d .chapter p{font-size:14px!important;line-height:1.5;margin-bottom:8px}
  .mv-m3d .chips{margin-top:10px}
  .mv-m3d .callout{font-size:9px;padding:6px 8px}.mv-m3d .callout small{font-size:10px}
  .mv-m3d .hud-stats{display:none}
  .mv-m3d .kpis b{font-size:17px}
  .mv-m3d .final{right:16px;left:16px;width:auto}
  .mv-m3d #m3d-hud-ticks li span{display:none}
}
@media (prefers-reduced-motion:reduce){.mv-m3d .scroll-cue span{animation:none}}