/* DEEPWATT · Underground Computing */
@font-face{font-family:'Oxanium';font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/oxanium-latin-500-normal.woff2) format('woff2')}
@font-face{font-family:'Oxanium';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/oxanium-latin-600-normal.woff2) format('woff2')}
@font-face{font-family:'Oxanium';font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/oxanium-latin-700-normal.woff2) format('woff2')}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-400-normal.woff2) format('woff2')}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-500-normal.woff2) format('woff2')}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-600-normal.woff2) format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/ibm-plex-mono-latin-400-normal.woff2) format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/ibm-plex-mono-latin-500-normal.woff2) format('woff2')}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
:root{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{margin:0}
img{max-width:100%}
[hidden]{display:none!important}
/* Concept : une coupe verticale de Paris. On descend de la surface (0 m) vers la cellule (−22 m) et la jauge de profondeur suit le défilement. */
/* Thème unique, sombre : une salle de contrôle sous la ville. */
:root{
  --bg:#040b14; --surface:#08162a; --surface2:#0d2038; --fg:#e6f1ff; --muted:#8fa8c4; --line:#16304f;
  --accent:#4cc9ff; --cyan:#19c3ff; --iris:#8f7bff; --heat:#ffab40; --ok:#3be0a4; --warn:#ff6e5e;
  --nav-bg:rgba(4,11,20,.82); --tglow:0 0 18px rgba(25,195,255,.45);
  --stone:#5f584c; --stone2:#7c7363; --zinc:#2c3948; --zinc2:#46576b; --iron:#0a0f16; --winoff:#141d2a; --winon:#ffc874;
  --sky1:#071a30; --sky2:#040b14; --soil1:#122233; --soil2:#0f1b2a; --rock:#0c1622; --deep:#08111b; --bld:#13263c; --win:#2d5278;
  --font-d:'Oxanium',system-ui,sans-serif; --font-b:'IBM Plex Sans',system-ui,sans-serif; --font-m:'IBM Plex Mono',ui-monospace,monospace;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--fg);font:400 16px/1.6 var(--font-b);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:var(--font-d);text-wrap:balance;line-height:1.1;margin:0}
h1{font-size:clamp(2.7rem,7.5vw,5.2rem);font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(1.8rem,4vw,2.7rem);font-weight:600}
h3{font-size:1.2rem;font-weight:600}
p{margin:0}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.wrap{max-width:1120px;margin-inline:auto;padding-inline:20px}
section{padding-block:clamp(52px,8vw,100px);border-top:1px solid var(--line)}
.eyebrow{font:500 .74rem/1 var(--font-m);letter-spacing:.15em;text-transform:uppercase;color:var(--accent)}
.lead{font-size:1.1rem;color:var(--muted);max-width:62ch}
.head{display:grid;gap:14px;margin-bottom:36px;max-width:760px}
.mono{font-family:var(--font-m)}
.note{font:400 .8rem/1.5 var(--font-m);color:var(--muted)}

/* nav */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:var(--nav-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:20px;height:56px}
.brand{flex:none;display:flex;align-items:center}
.logo{height:24px;width:auto;max-width:none;flex:none;display:block}
@media (max-width:520px){.logo{height:18px}.nav ul{gap:14px}}
.nav .prim{display:flex;gap:22px;list-style:none;margin:0 0 0 auto;padding:0}
.menubtn{display:inline-flex;align-items:center;gap:10px;margin-left:22px;padding:8px 12px;border:1px solid var(--line);background:transparent;color:var(--fg);font:500 .78rem var(--font-m);letter-spacing:.1em;text-transform:uppercase;cursor:pointer;white-space:nowrap}
.menubtn:hover,.menubtn[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan);box-shadow:0 0 14px color-mix(in srgb,var(--cyan) 30%,transparent)}
.menubtn i{display:grid;gap:3px;width:14px}.menubtn i::before,.menubtn i::after{content:"";height:2px;background:currentColor;transition:transform .25s}
.menubtn[aria-expanded="true"] i::before{transform:translateY(2.5px) rotate(45deg)}.menubtn[aria-expanded="true"] i::after{transform:translateY(-2.5px) rotate(-45deg)}
.menu{position:fixed;left:0;right:0;bottom:0;top:calc(56px + env(safe-area-inset-top,0px));z-index:49;background:color-mix(in srgb,var(--bg) 94%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);overflow-y:auto;padding-block:28px 60px}
.menu .grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px}
.menu a{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;align-items:baseline;padding:16px;border:1px solid var(--line);text-decoration:none;color:var(--fg);font:600 1.25rem var(--font-d);white-space:normal;opacity:0;transform:translateY(10px);animation:menuin .45s forwards}
.menu a small{grid-column:2;font:400 .82rem var(--font-b);color:var(--muted)}
.menu a span{font:500 .72rem var(--font-m);color:var(--cyan)}
.menu a:hover,.menu a:focus-visible{border-color:var(--cyan);box-shadow:0 0 20px color-mix(in srgb,var(--cyan) 22%,transparent)}
@keyframes menuin{to{opacity:1;transform:none}}
@media (max-width:980px){.nav .prim{display:none}.menubtn{margin-left:auto}}
.nav .prim a{font:500 .78rem var(--font-m);text-decoration:none;color:var(--muted);white-space:nowrap;padding:6px 0}
.nav .prim a:hover,.nav .prim a.on{color:var(--accent)}
.menu a.on{border-color:var(--accent)}

/* hero */
.hero{padding-block:clamp(36px,6vw,72px) 0;border:0;position:relative;overflow:hidden}
.hero h1{max-width:15ch;background:linear-gradient(90deg,var(--fg) 0%,var(--cyan) 42%,var(--iris) 68%,var(--fg) 100%);background-size:220% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shine 9s linear infinite,glitch 7s infinite}
@keyframes shine{to{background-position:-220% 0}}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:56px 56px;opacity:.45;-webkit-mask-image:radial-gradient(ellipse at 50% 15%,#000 10%,transparent 72%);mask-image:radial-gradient(ellipse at 50% 15%,#000 10%,transparent 72%);animation:gridmove 14s linear infinite;pointer-events:none}
@keyframes gridmove{to{background-position:56px 56px,56px 56px}}
#bg{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;opacity:.6}
.hero>.wrap{position:relative;z-index:1}
.rotline{margin-top:14px;font:500 1.05rem var(--font-m);color:var(--accent)}
.rotline b{color:var(--fg);font-weight:500}
.caret{display:inline-block;width:8px;height:1.05em;background:var(--cyan);margin-left:3px;vertical-align:-2px;animation:blink 1s steps(2,jump-none) infinite}
.hudbar{display:flex;flex-wrap:wrap;gap:6px 24px;margin-top:36px;font:500 .72rem var(--font-m);letter-spacing:.08em;color:var(--muted)}
.hudbar b{color:var(--cyan);font-weight:500;text-shadow:var(--tglow);font-variant-numeric:tabular-nums}
.hudbar span::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--ok);margin-right:8px;box-shadow:0 0 8px var(--ok);animation:blink 2s infinite}
.hudbar+.scene-wrap{margin-top:12px}
.scan{position:relative}
.scan::after{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,var(--cyan),transparent);opacity:.6;animation:scan 6s linear infinite;pointer-events:none}
@keyframes scan{from{top:0}to{top:100%}}
.simbox,.mapbox,.detail,.planbox,.ladder,.contactbox,.struct{position:relative}
.simbox::before,.mapbox::before,.detail::before,.planbox::before,.ladder::before,.contactbox::before,.struct::before,
.simbox::after,.mapbox::after,.detail::after,.planbox::after,.ladder::after,.contactbox::after,.struct::after{content:"";position:absolute;width:14px;height:14px;border:2px solid var(--cyan);pointer-events:none;filter:drop-shadow(0 0 4px var(--cyan))}
.simbox::before,.mapbox::before,.detail::before,.planbox::before,.ladder::before,.contactbox::before,.struct::before{top:-1px;left:-1px;border-right:0;border-bottom:0}
.simbox::after,.mapbox::after,.detail::after,.planbox::after,.ladder::after,.contactbox::after,.struct::after{bottom:-1px;right:-1px;border-left:0;border-top:0}
.fact b,.stat b,.outs b{text-shadow:var(--tglow)}
h2{background:linear-gradient(90deg,var(--fg),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.sweep{fill:var(--cyan);opacity:.16} .sweepl{stroke:var(--cyan);stroke-width:1.6;opacity:.7}
/* formats */
.fmt{display:grid;grid-template-columns:minmax(240px,300px) minmax(0,1fr);gap:28px;align-items:start}
.planbox{border:1px solid var(--line);background:var(--surface);overflow-x:auto}
#plan{display:block;width:100%;min-width:480px;height:auto}
.room{fill:var(--bg);stroke:var(--accent);stroke-width:2}
.tech{fill:var(--surface2);stroke:var(--line)}
.salle{fill:color-mix(in srgb,var(--cyan) 6%,var(--bg));stroke:var(--line)}
.air-c,.air-h{stroke-width:2;stroke-dasharray:3 9;animation:dash 1.2s linear infinite;fill:none}
.air-c{stroke:var(--cyan)} .air-h{stroke:var(--heat);animation-direction:reverse}
.fmt2{display:grid;grid-template-columns:220px minmax(0,1fr);gap:20px;align-items:center;margin-top:20px}
.fmt2 .outs{margin-top:0}
.pg-bg{fill:none;stroke:var(--surface2);stroke-width:12;stroke-linecap:round}
.pg-arc{fill:none;stroke:var(--cyan);stroke-width:12;stroke-linecap:round;transition:stroke-dashoffset .7s cubic-bezier(.2,.8,.2,1);filter:drop-shadow(0 0 6px var(--cyan))}
.ladder{margin-top:28px;border:1px solid var(--line);background:var(--surface);overflow-x:auto}
#ladder{display:block;width:100%;min-width:720px;height:auto}
.needle{transition:transform .7s cubic-bezier(.2,.8,.2,1)}
.fcards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-top:20px}
.fcard{display:grid;gap:4px;text-align:left;padding:14px;border:1px solid var(--line);background:var(--surface);color:var(--fg);cursor:pointer;font:400 .85rem var(--font-b)}
.fcard b{font:600 1.3rem var(--font-d)}
.fcard .fn{font:500 .7rem var(--font-m);letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}
.fcard .fp{font:500 .72rem var(--font-m);color:var(--muted)}
.fcard.on,.fcard:hover{border-color:var(--cyan);box-shadow:0 0 18px color-mix(in srgb,var(--cyan) 25%,transparent)}
.ok{color:var(--ok)} .ko{color:var(--warn)}
/* marchés */
.mkt{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);gap:28px;align-items:start}
.mlist{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:8px}
.mbtn{display:grid;gap:2px;text-align:left;padding:12px;border:1px solid var(--line);background:var(--surface);color:var(--fg);cursor:pointer;font:600 .9rem var(--font-b)}
.mbtn small{font:500 .68rem var(--font-m);color:var(--muted);letter-spacing:.06em}
.mbtn[aria-pressed="true"]{border-color:var(--cyan);background:var(--surface2);box-shadow:0 0 18px color-mix(in srgb,var(--cyan) 22%,transparent)}
.mpanel{border:1px solid var(--line);background:var(--surface);padding:clamp(16px,3vw,24px);display:grid;grid-template-columns:250px minmax(0,1fr);gap:20px;position:relative;min-width:0}
.mpanel::before,.mpanel::after{content:"";position:absolute;width:14px;height:14px;border:2px solid var(--cyan);pointer-events:none;filter:drop-shadow(0 0 4px var(--cyan))}
.mpanel::before{top:-1px;left:-1px;border-right:0;border-bottom:0}.mpanel::after{bottom:-1px;right:-1px;border-left:0;border-top:0}
#radar{width:100%;max-width:250px;height:auto;display:block}
.rd-poly{fill:color-mix(in srgb,var(--cyan) 28%,transparent);stroke:var(--cyan);stroke-width:2;filter:drop-shadow(0 0 6px var(--cyan))}
.mtext{display:grid;gap:12px;min-width:0}
.mtext ul{margin:0;padding-left:18px;color:var(--muted);display:grid;gap:4px;font-size:.92rem}
.mnote{font-size:.85rem;color:var(--muted);border-left:3px solid var(--heat);padding-left:10px}
/* sécurité */
.sec{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.9fr);gap:28px;align-items:center}
#layers{display:block;width:100%;max-width:520px;height:auto;margin-inline:auto}
.ly{cursor:pointer}
.ly rect{fill:transparent;stroke:var(--line);stroke-width:2;transition:stroke .3s,fill .3s}
.ly text{font:500 11px var(--font-m);fill:var(--muted);letter-spacing:.08em}
.ly.on rect{stroke:var(--cyan);fill:color-mix(in srgb,var(--cyan) 7%,transparent);filter:drop-shadow(0 0 6px var(--cyan))}
.ly.on text{fill:var(--cyan)}
.ly:focus-visible{outline:none}.ly:focus-visible rect{stroke:var(--fg)}
.lydet{display:grid;gap:10px}
.lydet ul{margin:0;padding-left:18px;color:var(--muted);display:grid;gap:4px}
.anon{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px;margin-top:44px}
.anon article{border-top:2px solid var(--iris);padding-top:14px;display:grid;gap:8px;align-content:start}
.anon p{color:var(--muted);font-size:.93rem}
.certs{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px;align-items:center}
.cert{font:500 .78rem var(--font-m);padding:7px 12px;border:1px dashed var(--accent);color:var(--accent)}
/* neutrino */
.neu-head{display:flex;flex-wrap:wrap;gap:20px 36px;align-items:center;margin-bottom:30px}
.neu-logo{width:min(380px,100%);height:auto}
.loopbox{border:1px solid var(--line);background:var(--surface);overflow-x:auto;position:relative}
#loop{display:block;width:100%;min-width:620px;height:auto}
.lp-path{fill:none;stroke:var(--line);stroke-width:2}
.lp-flow{fill:none;stroke-width:2.5;stroke-dasharray:6 10;animation:dash 1.2s linear infinite}
.orbit{fill:none;stroke:var(--iris);stroke-width:1.5;opacity:.6}
.core{fill:color-mix(in srgb,var(--iris) 22%,var(--bg));stroke:var(--iris);stroke-width:2;filter:drop-shadow(0 0 10px var(--iris))}
.spin{animation:spin 12s linear infinite;transform-box:fill-box;transform-origin:center}
.spin.r{animation-direction:reverse;animation-duration:18s}
@keyframes spin{to{transform:rotate(360deg)}}
.roles4{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:22px;margin-top:30px}
.roles4 article{display:grid;gap:8px;align-content:start;border-left:3px solid var(--iris);padding-left:14px}
.roles4 p{color:var(--muted);font-size:.93rem}
.f-iris{fill:var(--iris)} .s-iris{stroke:var(--iris)}
/* Paris haussmannien */
.stone{fill:var(--stone)} .stone2{fill:var(--stone2)} .zinc{fill:var(--zinc)} .zinc2{fill:var(--zinc2)} .iron{fill:var(--iron)} .joint{fill:var(--iron);opacity:.35}
.winoff{fill:var(--winoff)} .lw{fill:var(--winon);opacity:.9} .shop{fill:var(--winon);opacity:.55} .pot{fill:#a8624a}
.lw.fl{animation:lights 18s steps(1,end) infinite}
@keyframes lights{0%,58%{opacity:.9}59%,100%{opacity:.08}}
.hw{fill:var(--winon);animation:hw 3.2s ease-in-out infinite}
@keyframes hw{50%{fill:var(--heat)}}
.star{fill:var(--fg);animation:tw 3s ease-in-out infinite}
@keyframes tw{50%{opacity:.12}}
.lamp{animation:lamp 3.6s ease-in-out infinite}
@keyframes lamp{50%{opacity:.55}}
.lampb{fill:var(--winon)} .beam{fill:var(--winon);opacity:.22} .tail{fill:var(--warn)}
/* effets */
body::before{content:"";position:fixed;inset:-20%;z-index:-1;pointer-events:none;background:radial-gradient(38% 30% at 20% 30%,color-mix(in srgb,var(--iris) 11%,transparent),transparent 70%),radial-gradient(34% 30% at 80% 70%,color-mix(in srgb,var(--cyan) 10%,transparent),transparent 70%);animation:aurora 26s ease-in-out infinite alternate}
@keyframes aurora{to{transform:translate(6%,-5%) rotate(9deg)}}
.btn{position:relative;overflow:hidden}
.btn::after{content:"";position:absolute;top:0;bottom:0;width:40%;left:-60%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.3),transparent);transform:skewX(-20deg);animation:sheen 5s ease-in-out infinite;pointer-events:none}
@keyframes sheen{0%,72%{left:-60%}100%{left:130%}}
.simbox,.mpanel,.planbox,.loopbox{animation:edge 5s ease-in-out infinite}
@keyframes edge{50%{box-shadow:0 0 28px color-mix(in srgb,var(--cyan) 16%,transparent)}}
.eyebrow::before{content:"// ";color:var(--muted)}
/* écran des applications */
.mscreen{grid-column:1/-1;position:relative;min-width:0}
.manim{display:block;width:100%;aspect-ratio:16/7;background:var(--bg);border:1px solid var(--line)}
.mscreen::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(to bottom,transparent 0 3px,color-mix(in srgb,var(--bg) 40%,transparent) 3px 4px);pointer-events:none}
.mscreen .live{position:absolute;right:10px;bottom:8px;font:500 .66rem var(--font-m);color:var(--warn);letter-spacing:.14em;z-index:1}
.mscreen .live::before{content:"\25CF  ";animation:blink 1.2s infinite}
/* effets d'ambiance */
.spot{position:fixed;left:0;top:0;width:560px;height:560px;margin:-280px 0 0 -280px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--cyan) 12%,transparent),transparent 65%);pointer-events:none;z-index:60;mix-blend-mode:screen;opacity:0;transition:opacity .4s}
.floor{position:absolute;left:-30%;right:-30%;bottom:0;height:42%;background-image:linear-gradient(var(--cyan) 1px,transparent 1px),linear-gradient(90deg,var(--cyan) 1px,transparent 1px);background-size:64px 64px;transform:perspective(420px) rotateX(70deg);transform-origin:bottom;opacity:.16;animation:floor 2.6s linear infinite;-webkit-mask-image:linear-gradient(to top,#000,transparent);mask-image:linear-gradient(to top,#000,transparent);pointer-events:none;z-index:0}
@keyframes floor{to{background-position:0 64px,0 0}}
@keyframes glitch{0%,92%,100%{transform:none;filter:none}93%{transform:translate(3px,-1px) skewX(-8deg);filter:drop-shadow(-4px 0 var(--warn)) drop-shadow(4px 0 var(--cyan))}94.5%{transform:translate(-3px,1px);filter:drop-shadow(4px 0 var(--iris))}96%{transform:none;filter:none}}
.console{margin-top:10px;min-height:2.9em;font:500 .8rem/1.45 var(--font-m);color:var(--ok);overflow-wrap:anywhere}
.console::after{content:"_";animation:blink 1s steps(2,jump-none) infinite}
main section{position:relative;overflow:hidden}
main section::before{content:"";position:absolute;top:-1px;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--cyan),var(--iris),transparent);background-size:35% 100%;background-repeat:no-repeat;animation:trace 7s linear infinite;pointer-events:none;filter:drop-shadow(0 0 6px var(--cyan))}
@keyframes trace{from{background-position:-40% 0}to{background-position:140% 0}}
main section::after{content:"";position:absolute;left:0;right:0;top:0;height:140px;background:linear-gradient(to bottom,color-mix(in srgb,var(--cyan) 16%,transparent),transparent);opacity:0;pointer-events:none}
main section.in::after{animation:wipe 1.5s ease-out 1}
@keyframes wipe{0%{opacity:.9;transform:translateY(0)}100%{opacity:0;transform:translateY(520px)}}
.tilt{transition:transform .2s ease-out;will-change:transform}
.cmpwrap{display:grid;grid-template-columns:minmax(240px,300px) minmax(0,1fr);gap:28px;align-items:start}
.crow{display:grid;gap:4px;padding:12px 0;border-bottom:1px solid var(--line)}
.crow:first-child{padding-top:0}
.cl{font:500 .75rem var(--font-m);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.cbar{min-height:24px;background:var(--surface2);position:relative}
.cbar i{position:absolute;left:0;top:0;bottom:0;width:0;transition:width .9s cubic-bezier(.2,.8,.2,1)}
.cbar.a i{background:var(--muted);opacity:.65}
.cbar.b i{background:var(--cyan);box-shadow:0 0 14px var(--cyan)}
.cbar em{position:relative;z-index:1;display:block;padding:4px 10px;font:500 .78rem/1.3 var(--font-m);font-style:normal;color:var(--fg)}
.lim{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin-top:28px}
.lim div{border:1px dashed var(--line);padding:12px 14px;color:var(--muted);font-size:.9rem}
.lim b{display:block;color:var(--heat);font:500 .72rem var(--font-m);letter-spacing:.1em;text-transform:uppercase;margin-bottom:4px}
.hero .lead{margin-top:20px}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;border:1px solid var(--accent);border-radius:3px;font:600 .9rem var(--font-b);text-decoration:none;color:var(--accent);background:transparent;cursor:pointer}
.btn.pri{background:var(--accent);color:var(--bg)}
.btn:hover{filter:brightness(1.1)}
.scene-wrap{margin-top:40px;border:1px solid var(--line);border-radius:4px;overflow-x:auto;background:var(--surface)}
#scene{display:block;width:100%;min-width:780px;height:auto}
@media (max-width:700px){#scene{min-width:0}}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:0;margin-top:0;border:1px solid var(--line);border-top:0}
.fact{padding:18px 20px;border-right:1px solid var(--line);display:grid;gap:4px;min-width:0}
.fact:last-child{border-right:0}
.fact b{font:600 1.9rem/1 var(--font-d);color:var(--accent);font-variant-numeric:tabular-nums}
.fact span{font-size:.85rem;color:var(--muted)}

/* scene svg classes */
.bld{fill:var(--bld)} .roof{fill:var(--muted);opacity:.45}
.fibre{stroke:var(--cyan);stroke-width:2.2;fill:none;stroke-dasharray:5 15;animation:dash 1.4s linear infinite}
.fibre.slow{animation-duration:2.4s}
@keyframes dash{to{stroke-dashoffset:-20}}
.pipe-heat{stroke:var(--heat);stroke-width:4;fill:none;opacity:.8}
.f-cyan{fill:var(--cyan)} .f-heat{fill:var(--heat)} .f-fg{fill:var(--fg)} .f-muted{fill:var(--muted)} .f-surface{fill:var(--surface)} .f-s2{fill:var(--surface2)} .f-bg{fill:var(--bg)}
.s-line{stroke:var(--line)} .s-cyan{stroke:var(--cyan)} .s-heat{stroke:var(--heat)} .s-muted{stroke:var(--muted)} .s-fg{stroke:var(--fg)}
.rack{fill:var(--bg);stroke:var(--line)}
.led{fill:var(--cyan);animation:blink 1.6s steps(2,jump-none) infinite}
.slot{fill:var(--line)}
@keyframes blink{0%{opacity:1}50%{opacity:.15}100%{opacity:1}}
.train{animation:train 5s ease-in-out infinite alternate}
@keyframes train{from{transform:translateX(-46px)}to{transform:translateX(46px)}}
.lab{font:500 13px var(--font-m);fill:var(--fg)}
.lab.m{fill:var(--muted)}
.sun{animation:pulse 3s ease-in-out infinite;transform-box:fill-box;transform-origin:center}
@keyframes pulse{50%{transform:scale(1.18);opacity:.8}}
.air{font:600 17px var(--font-d);fill:var(--heat)}
.air.cold{fill:var(--accent)}

/* immeuble hôte */
.host{fill:var(--surface2);stroke:var(--accent);stroke-width:2}
.warm{animation:warm 3.2s ease-in-out infinite}
@keyframes warm{50%{opacity:.5}}
.car{fill:var(--muted);opacity:.5}
.halo{paint-order:stroke;stroke:var(--surface2);stroke-width:4px;stroke-linejoin:round}
.pipe-cold{stroke:var(--cyan);stroke-width:3;fill:none;stroke-dasharray:3 5;opacity:.7}
.lg{display:flex;flex-wrap:wrap;gap:14px;font:500 .72rem var(--font-m);color:var(--muted);margin-top:8px}
.lg i{display:inline-block;width:10px;height:10px;margin-right:6px;vertical-align:-1px}
/* depth gauge */
.gauge{position:fixed;right:10px;top:50%;transform:translateY(-50%);z-index:40;display:flex;flex-direction:column;gap:6px;align-items:center;text-align:center;width:66px;padding:10px 6px;font-size:.62rem!important;background:var(--surface);border:1px solid var(--line);border-radius:3px;font:500 .74rem var(--font-m);color:var(--muted);box-shadow:0 2px 14px rgba(0,0,0,.12)}
.gauge b{color:var(--fg);font-variant-numeric:tabular-nums}
.gauge i{display:block;width:3px;height:70px;background:var(--line);position:relative}
.gauge b{font-size:.8rem}
@media (max-width:1359px){.gauge{display:none}}
.gauge i::after{content:"";position:absolute;left:0;right:0;top:0;height:var(--p,0%);background:var(--cyan)}

/* advantages */
.adv{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:36px 40px}
.adv article{display:grid;gap:10px;border-top:2px solid var(--line);padding-top:16px;align-content:start;min-width:0}
.adv svg{width:100%;max-width:220px;height:74px;display:block}
.adv p{color:var(--muted);font-size:.95rem}
.thbar{transform-origin:bottom;transform-box:fill-box;animation:thair 4s ease-in-out infinite}
@keyframes thair{0%,100%{transform:scaleY(.35)}50%{transform:scaleY(1)}}
.ring{transform-box:fill-box;transform-origin:center;animation:ring 2.6s ease-out infinite;fill:none;stroke:var(--cyan)}
@keyframes ring{from{transform:scale(.3);opacity:.9}to{transform:scale(1.6);opacity:0}}
.rise{animation:rise 3s linear infinite}
@keyframes rise{from{transform:translateY(0);opacity:0}15%{opacity:1}to{transform:translateY(-52px);opacity:0}}
.drift{animation:drift 3.4s ease-in-out infinite alternate}
@keyframes drift{from{transform:translateY(0)}to{transform:translateY(14px)}}

/* map */
.tools{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.chip{font:500 .8rem var(--font-m);padding:8px 12px;border:1px solid var(--line);border-radius:3px;background:var(--surface);color:var(--muted);cursor:pointer}
.chip[aria-pressed="true"],.chip[aria-selected="true"],.chip.on{border-color:var(--accent);color:var(--accent);background:var(--surface2)}
.mapgrid{display:grid;grid-template-columns:minmax(0,1.9fr) minmax(260px,1fr);gap:20px;align-items:start}
.mapbox{border:1px solid var(--line);border-radius:4px;background:var(--surface);overflow-x:auto}
#map{display:block;width:100%;min-width:560px;height:auto}
.mp-land{fill:var(--surface2);stroke:var(--muted);stroke-width:1.2;stroke-opacity:.6}
.mp-bois{fill:var(--ok);opacity:.16}
.mp-seine{fill:none;stroke:var(--cyan);stroke-width:7;stroke-linecap:round;opacity:.28}
.mp-arr{font:500 12px var(--font-m);fill:var(--muted);opacity:.45;text-anchor:middle}
.mp-lm{fill:var(--muted)} .mp-lt{font:500 11px var(--font-m);fill:var(--muted)}
.link{fill:none;stroke:var(--cyan);stroke-width:1.4;opacity:.45}
.link.bb{stroke-width:2.4;opacity:.7}
.hub{fill:var(--bg);stroke:var(--cyan);stroke-width:2}
.zone{cursor:pointer}
.zone circle.dot{fill:var(--cyan);stroke:var(--bg);stroke-width:2}
.zone.sel circle.dot{fill:var(--accent);stroke:var(--fg);stroke-width:2.5}
.zone text{font:600 12px var(--font-m);fill:var(--fg);paint-order:stroke;stroke:var(--surface2);stroke-width:3}
.heatring{fill:none;stroke:var(--heat);stroke-width:2}
.detail{border:1px solid var(--line);border-radius:4px;padding:20px;background:var(--surface);display:grid;gap:14px;min-width:0}
.detail dl{display:grid;gap:10px;margin:0}
.detail dt{font:500 .7rem var(--font-m);text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}
.detail dd{margin:2px 0 0;font-weight:500}
.tag{display:inline-block;font:500 .72rem var(--font-m);padding:3px 8px;border:1px solid var(--heat);color:var(--heat);border-radius:2px}

/* sims */
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:18px}
.simbox{border:1px solid var(--line);border-radius:4px;background:var(--surface);padding:clamp(16px,3vw,28px)}
.simgrid{display:grid;grid-template-columns:minmax(240px,300px) minmax(0,1fr);gap:28px}
.ctl{display:grid;gap:18px;align-content:start}
.ctl label{display:grid;gap:6px;font:500 .8rem var(--font-m);color:var(--muted)}
.ctl label span{display:flex;justify-content:space-between;gap:8px}
.ctl output{color:var(--fg);font-weight:600}
input[type=range]{width:100%;accent-color:var(--accent)}
select,.ctl>button{font:500 .85rem var(--font-m);padding:8px;border:1px solid var(--line);background:var(--bg);color:var(--fg);border-radius:3px;width:100%}
.viz{min-width:0;overflow-x:auto}
.viz svg{display:block;width:100%;height:auto;min-width:420px}
.outs{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin-top:20px}
.outs div{background:var(--surface);padding:12px 14px;display:grid;gap:2px;min-width:0}
.outs span{font:500 .68rem var(--font-m);text-transform:uppercase;letter-spacing:.1em;color:var(--muted)}
.outs b{font:600 1.35rem var(--font-d);font-variant-numeric:tabular-nums}
.ctl>button[aria-pressed="true"]{border-color:var(--accent);color:var(--accent)}
.outs b.good{color:var(--ok)} .outs b.bad{color:var(--warn)}
details.assump{margin-top:16px;font-size:.88rem;color:var(--muted)}
details.assump summary{cursor:pointer;font:500 .8rem var(--font-m);color:var(--accent)}
details.assump ul{margin:10px 0 0;padding-left:18px;display:grid;gap:4px}
.gl{stroke:var(--line);stroke-width:1} .tx{font:500 11px var(--font-m);fill:var(--muted)} .tx.fg{fill:var(--fg)}
.c-ref{fill:none;stroke:var(--heat);stroke-width:2.5} .c-und{fill:none;stroke:var(--cyan);stroke-width:2.5}
.band{fill:var(--accent);opacity:.1}
.pk{fill:var(--cyan);stroke:var(--bg);stroke-width:2}
.tiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}
.tile{padding:8px;border:1px solid var(--line);background:color-mix(in srgb,var(--cyan) 14%,var(--surface));border-radius:2px;font:500 .8rem var(--font-m);display:grid;gap:2px;transition:background .6s}
.tile small{font-size:.65rem;color:var(--muted)}
.tile.w{background:color-mix(in srgb,var(--heat) 30%,var(--surface))}
.tile.h{background:color-mix(in srgb,var(--warn) 45%,var(--surface))}
.alarm{min-height:2.6em;font:500 .85rem var(--font-m);padding:8px 10px;border:1px solid var(--line);margin-top:10px}
.alarm.on{border-color:var(--warn);color:var(--warn)}
.cell-in{animation:cellin .5s both}
@keyframes cellin{from{opacity:0;transform:scale(.4)}to{opacity:1;transform:none}}
.cell-in{transform-box:fill-box;transform-origin:center}

/* market */
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:36px}
.bars{display:grid;gap:16px}
.brow{display:grid;grid-template-columns:70px minmax(0,1fr) 110px;gap:12px;align-items:center;font:500 .85rem var(--font-m)}
.track{height:22px;background:var(--surface2);position:relative;overflow:hidden}
.track i{position:absolute;left:0;top:0;bottom:0;background:var(--accent);transform-origin:left}
.track i.ext{background:repeating-linear-gradient(135deg,var(--accent) 0 4px,transparent 4px 8px);opacity:.55}
.play .track i{animation:grow 1.2s cubic-bezier(.2,.7,.2,1) both}
@keyframes grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.stats{display:grid;gap:0;border:1px solid var(--line)}
.stat{display:grid;grid-template-columns:minmax(0,auto) minmax(0,1fr);gap:16px;padding:14px 16px;border-bottom:1px solid var(--line);align-items:baseline}
.stat:last-child{border-bottom:0}
.stat b{font:600 1.6rem var(--font-d);color:var(--accent);white-space:nowrap}
.stat span{font-size:.9rem;color:var(--muted)}
.list{display:grid;gap:10px;padding-left:18px;margin:0;color:var(--muted)}
.list b{color:var(--fg);font-weight:600}

/* cities */
.citygrid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:center}
#eu{display:block;width:100%;max-width:520px;height:auto;margin-inline:auto}
.arc{fill:none;stroke:var(--cyan);stroke-width:1.6;stroke-dasharray:4 7;animation:dash 1.8s linear infinite;opacity:.8}
.arc.sel{stroke:var(--accent);stroke-width:2.6;opacity:1}
.citylist{display:grid;gap:0;border:1px solid var(--line)}
.citylist button{display:grid;grid-template-columns:1fr auto;gap:10px;padding:12px 16px;border:0;border-bottom:1px solid var(--line);background:var(--surface);color:var(--fg);font:500 .95rem var(--font-b);text-align:left;cursor:pointer}
.citylist button:last-child{border-bottom:0}
.citylist button[aria-pressed="true"]{background:var(--surface2);color:var(--accent)}
.citylist em{font:500 .72rem var(--font-m);color:var(--muted);font-style:normal}
.crit{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}

/* roles */
.roles{border-top:1px solid var(--line)}
.role{border-bottom:1px solid var(--line);padding:18px 0;display:grid;gap:10px}
.role header{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:baseline;justify-content:space-between}
.role h3{font-size:1.1rem}
.role .meta{font:500 .74rem var(--font-m);color:var(--muted)}
.role p{color:var(--muted);max-width:70ch}
.apply{display:grid;gap:10px;padding:14px;background:var(--surface2);border:1px solid var(--line)}
.copyline{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font:500 .85rem var(--font-m);word-break:break-all}
.copyline code{background:var(--surface);border:1px solid var(--line);padding:6px 10px}

/* investors */
.thesis{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:28px;margin-bottom:44px}
.thesis article{border-left:3px solid var(--cyan);padding-left:16px;display:grid;gap:8px;align-content:start}
.thesis p{color:var(--muted);font-size:.95rem}
.struct{border:1px solid var(--line);border-radius:4px;background:var(--surface);overflow-x:auto;margin-bottom:44px}
.struct svg{display:block;width:100%;min-width:560px;height:auto}
.disc{font-size:.82rem;color:var(--muted);border-left:3px solid var(--heat);padding-left:12px;margin-top:18px;max-width:80ch}
.contactbox{margin-top:36px;padding:22px;border:1px solid var(--accent);display:grid;gap:12px}

footer{border-top:1px solid var(--line);padding-block:44px 90px;font-size:.88rem;color:var(--muted)}
footer .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:28px}
footer h4{font:500 .72rem var(--font-m);letter-spacing:.14em;text-transform:uppercase;color:var(--fg);margin-bottom:10px}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}

@media (max-width:860px){
  .mpanel{grid-template-columns:minmax(0,1fr)}
  .manim{aspect-ratio:4/3}
  .mapgrid,.simgrid,.citygrid,.fmt,.fmt2,.cmpwrap,.mkt,.sec{grid-template-columns:minmax(0,1fr)}
  .brow{grid-template-columns:54px minmax(0,1fr) 92px}
  .fact{border-right:0;border-bottom:1px solid var(--line)}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}