/* ---------- fontes auto-hébergées ---------- */
  @font-face{font-family:'Archivo';font-weight:700;font-display:swap;src:url(/ar700x.woff2) format('woff2')}
  @font-face{font-family:'Archivo';font-weight:500;font-display:swap;src:url(/ar500.woff2) format('woff2')}
  @font-face{font-family:'Plex';font-weight:400;font-display:swap;src:url(/px400.woff2) format('woff2')}
  @font-face{font-family:'Plex';font-weight:600;font-display:swap;src:url(/px600.woff2) format('woff2')}
  @font-face{font-family:'PlexMono';font-weight:400;font-display:swap;src:url(/pm400.woff2) format('woff2')}
  @font-face{font-family:'PlexMono';font-weight:600;font-display:swap;src:url(/pm600.woff2) format('woff2')}

  /* ---------- jetons : sombre par défaut ---------- */
  :root{
    --paper:#0E1821; --mist:color-mix(in srgb,#152230 66%,transparent); --surface:#152230; --line:#22323F; --rule-soft:#1B2836;
    --ink:#CDD9E3; --muted:#7C8D9D; --head:#F0F6FA;
    --blue:#4E9BD6; --orange:#E08A3C;
    --blue-soft:#15293A; --orange-soft:#2C2114; --band:#1B2A3A; --navy-line:#8FA3B5;
    --btn-bg:transparent; --btn-line:#2E404F; --btn-fg:#F0F6FA;
    --btn-primary-bg:#E08A3C; --btn-primary-fg:#10161C;
    --dot-ring:#0E1821; --todo-bg:#2C2114; --todo-fg:#E5A45F;
    --logo-main:#F0F6FA; --logo-sub:#9FB2C2; --logo-by:#7C8D9D; --logo-axis:#8FA3B5;
    --grid:#1A2836;
    --font-head:'Archivo',system-ui,sans-serif;
    --font-body:'Plex','IBM Plex Sans',system-ui,sans-serif;
    --font-mono:'PlexMono','IBM Plex Mono',ui-monospace,monospace;
    --max:1160px;
  }
  [data-theme="light"]{
    --paper:#EDF0F3; --mist:color-mix(in srgb,#F8FAFB 72%,transparent); --surface:#FFFFFF; --line:#C7D1DA; --rule-soft:#E2E8ED;
    --ink:#22313F; --muted:#5D6E7E; --head:#101923;
    --blue:#1F6FB2; --orange:#B8631A;
    --blue-soft:#E4EEF7; --orange-soft:#F8EDE0; --band:#E1E8EF; --navy-line:#3A4E61;
    --btn-bg:transparent; --btn-line:#C7D1DA; --btn-fg:#101923;
    --btn-primary-bg:#101923; --btn-primary-fg:#EDF0F3;
    --dot-ring:#FFFFFF; --todo-bg:#F8EDE0; --todo-fg:#8A4F0F;
    --logo-main:#101923; --logo-sub:#3A4E61; --logo-by:#5D6E7E; --logo-axis:#3A4E61;
    --grid:#DFE5EB;
  }

  /* ---------- socle ---------- */
  /* « only » : le site gère lui-même ses couleurs, les navigateurs (Samsung Internet, Chrome) ne doivent pas les recalculer */
  :root{color-scheme:only dark}
  [data-theme="light"]{color-scheme:only light}
  *{box-sizing:border-box}
  html{scroll-behavior:smooth;background:var(--paper)}
  body{margin:0;color:var(--ink);font-family:var(--font-body);font-size:16px;line-height:1.55;
    background-color:var(--paper);
    background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
    background-size:56px 56px;background-position:-1px -1px}
  body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
    background:linear-gradient(180deg,rgba(14,24,33,.78),rgba(14,24,33,.92))}
  [data-theme="light"] body::before{background:linear-gradient(180deg,rgba(237,240,243,.82),rgba(237,240,243,.93))}
  body::after{content:"";position:fixed;inset:-22%;pointer-events:none;z-index:0;
    background:
      radial-gradient(36% 30% at 16% 20%, color-mix(in srgb,var(--blue) 15%,transparent), transparent 70%),
      radial-gradient(28% 26% at 86% 10%, color-mix(in srgb,var(--orange) 11%,transparent), transparent 70%),
      radial-gradient(40% 34% at 80% 88%, color-mix(in srgb,var(--blue) 11%,transparent), transparent 72%),
      radial-gradient(26% 24% at 8% 78%, color-mix(in srgb,var(--orange) 8%,transparent), transparent 72%)}
  [data-theme="light"] body::after{opacity:.6}
  main,header,footer{position:relative;z-index:1}
  .wrap{max-width:var(--max);margin:0 auto;padding:0 40px}
  @media (max-width:620px){.wrap{padding:0 20px}}
  section[data-page]{padding:3.4rem 0 4.4rem}
  section[data-page][hidden]{display:none}

  /* ---------- typographie ---------- */
  h1,h2{font-family:var(--font-head);font-weight:700;color:var(--head);line-height:1.08;letter-spacing:-.018em;margin:0 0 .7em}
  /* nom de marque dans un titre : même dessin que le logo (Archivo élargi, capitales, Δ orange) */
  .bw{font-family:'Archivo',system-ui,sans-serif;font-weight:700;text-transform:uppercase;letter-spacing:.01em;
    font-stretch:112%;white-space:nowrap}
  .bw-d{color:var(--orange)}
  .sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
  h1{font-size:clamp(1.55rem,2.55vw,2.3rem)}
  h2{font-size:clamp(1.35rem,2.1vw,1.72rem)}
  h3{font-family:var(--font-body);font-weight:600;font-size:1.08rem;color:var(--head);line-height:1.3;margin:0 0 .4em}
  p{margin:0 0 1em;max-width:74ch}
  a{color:var(--blue)}
  .lead{font-size:1.05rem;color:var(--muted);max-width:52ch}
  .tagline{font-family:var(--font-mono);font-size:.78rem;color:var(--orange);margin:0 0 .6rem}
  .opt{font-family:var(--font-mono);font-size:.76rem;color:var(--muted);margin:.3rem 0 0;max-width:80ch}
  .meta{font-family:var(--font-mono);font-size:.76rem;color:var(--muted);margin-bottom:.4rem}
  a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{
    outline:2px solid var(--orange);outline-offset:2px}

  /* ---------- en-tête ---------- */
  header{position:sticky;top:0;z-index:20;background:var(--paper);border-bottom:1px solid var(--line);
    transition:background-color .3s ease,box-shadow .3s ease}
  @supports ((backdrop-filter:blur(4px)) or (-webkit-backdrop-filter:blur(4px))){
    header.compact{background:color-mix(in srgb,var(--paper) 72%,transparent);
      -webkit-backdrop-filter:blur(16px) saturate(1.15);backdrop-filter:blur(16px) saturate(1.15)}
    [data-theme="light"] header.compact{background:color-mix(in srgb,var(--paper) 92%,transparent);
      -webkit-backdrop-filter:blur(24px) saturate(1.05);backdrop-filter:blur(24px) saturate(1.05)}
  }
  header.compact{box-shadow:0 12px 30px -22px rgba(2,8,14,.6)}
  @media (max-width:1060px){nav.open{background:var(--paper)}}
  .bar{display:flex;align-items:center;height:92px;gap:1.4rem}
  @media (max-width:700px){.bar{height:68px;gap:.8rem}}
  .brand svg{display:block;width:auto}
  .brand .logo{height:72px}
  .brand .logo-sm{display:none;height:auto;width:min(288px,calc(100vw - 178px))}
  @media (max-width:1180px){.brand .logo{height:66px}}
  @media (max-width:1060px){.brand .logo{height:58px}}
  @media (max-width:700px){
    .brand .logo{display:none}
    .brand .logo-sm{display:block}
  }
  @media (max-width:520px){
    .burger{font-size:1.1rem;line-height:1;padding:.35rem .5rem}
    .brand .logo-sm{width:min(288px,calc(100vw - 150px))}
  }
  nav{margin-left:auto}
  nav ul{list-style:none;margin:0;padding:0;display:flex;gap:1.1rem}
  nav a{font-family:var(--font-body);font-weight:400;font-size:.85rem;color:var(--muted);text-decoration:none;padding-bottom:3px}
  nav a[aria-current="page"]{color:var(--head);box-shadow:0 2px 0 var(--orange)}
  nav a:hover{color:var(--head)}
  .tools{display:flex;align-items:center;gap:.55rem;order:3}
  #themeBtn{background:none;border:1px solid var(--line);width:34px;height:34px;display:grid;place-items:center;
    cursor:pointer;color:var(--head);flex:none;padding:0}
  #themeBtn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .burger .bi{display:none}
  @media (max-width:520px){.burger .bl{display:none}.burger .bi{display:inline}}
  .burger{display:none;background:none;border:1px solid var(--line);padding:.4rem .6rem;font:inherit;font-size:.85rem;color:var(--head);cursor:pointer}
  @media (max-width:1060px){
    .burger{display:block}
    nav{position:absolute;left:0;right:0;top:100%;background:var(--paper);border-bottom:1px solid var(--line);display:none;margin:0}
    nav.open{display:block}
    nav ul{flex-direction:column;gap:0;padding:.4rem 20px 1rem}
    nav a{display:block;padding:.7rem 0;border-bottom:1px solid var(--rule-soft)}
    nav a[aria-current="page"]{box-shadow:none;color:var(--orange)}
  }
  #prog{position:fixed;top:0;left:0;height:2px;width:0;background:var(--orange);z-index:40;pointer-events:none}

  /* ---------- boutons ---------- */
  .btn{display:inline-block;font-family:var(--font-body);font-weight:600;font-size:.92rem;padding:.72rem 1.3rem;
    text-decoration:none;border:1px solid var(--btn-line);color:var(--btn-fg);background:var(--btn-bg);cursor:pointer;border-radius:0}
  .btn.primary{background:var(--btn-primary-bg);color:var(--btn-primary-fg);border-color:var(--btn-primary-bg)}
  .btn:hover{border-color:var(--orange);color:var(--head)}
  .btn.primary:hover{filter:brightness(1.07);color:var(--btn-primary-fg)}
  .actions{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:1.7rem}

  /* ---------- sections et filets ---------- */
  .block{padding:3rem 0 0;border-top:1px solid var(--line);margin-top:3rem}
  .block:first-child{border-top:0;padding-top:0;margin-top:0}
  /* bande pleine largeur : la seule rupture de rythme de la page */
  .bleed{position:relative;margin:3.4rem 0;padding:3.2rem 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    background:color-mix(in srgb,var(--surface) 34%,transparent);overflow:clip}
  .rail{display:none;position:absolute;top:0;bottom:0;width:min(470px,calc((100% - 1440px)/2 - 40px));
    overflow:hidden;pointer-events:none;user-select:none;z-index:0;
    -webkit-mask-image:linear-gradient(180deg,transparent,#000 14%,#000 86%,transparent);
    mask-image:linear-gradient(180deg,transparent,#000 14%,#000 86%,transparent)}
  .rail-l{left:22px} .rail-r{right:22px}
  .rail-run{font-family:var(--font-mono);font-size:12px;line-height:1.7;color:var(--muted);
    opacity:.17;white-space:pre}
  .rail-run b{font-weight:400;color:var(--blue)}
  .rail-run i{font-style:normal;color:var(--orange)}
  @media (min-width:1860px){.rail{display:block}}
  @media (min-width:1100px) and (max-width:1859px){
    .rail{display:block;top:var(--rail-top,0);bottom:auto;height:var(--rail-h,100%);width:46%}
    .rail-l{left:0;
      -webkit-mask-image:linear-gradient(180deg,transparent,#000 10%,#000 90%,transparent),linear-gradient(90deg,#000 55%,transparent);
      mask-image:linear-gradient(180deg,transparent,#000 10%,#000 90%,transparent),linear-gradient(90deg,#000 55%,transparent);
      -webkit-mask-composite:source-in;mask-composite:intersect}
    .rail-r{right:0;
      -webkit-mask-image:linear-gradient(180deg,transparent,#000 10%,#000 90%,transparent),linear-gradient(270deg,#000 55%,transparent);
      mask-image:linear-gradient(180deg,transparent,#000 10%,#000 90%,transparent),linear-gradient(270deg,#000 55%,transparent);
      -webkit-mask-composite:source-in;mask-composite:intersect}
    .rail-run{padding-left:48px}
    .rail-r .rail-run{padding-left:0;display:flex;flex-direction:column;align-items:flex-end;padding-right:48px}
    .rail-r .rail-run span{text-align:left}
    .rail-run{opacity:.3}
    .term{background:color-mix(in srgb,var(--surface) 55%,transparent)}
  }
  .bleed .block{border-top:0;padding-top:0;margin-top:0}
  .bleed>.wrap{max-width:1420px;position:relative;z-index:1}
  .bleed .flow-intro{max-width:none}
  @media (max-width:760px){.br-lg{display:none}}
  @media (min-width:761px){.bleed .flow-intro{font-size:clamp(15px,calc((100vw - 80px) / 79),16px)}}
  /* clôture */
  .closing{padding-top:3.4rem}
  .closing h2{font-size:clamp(1.5rem,2.6vw,2.15rem);max-width:20ch}
  .closing p{max-width:62ch}
  .closing .actions{margin-bottom:2.6rem}
  .closing .fine{font-size:.82rem;color:var(--muted);max-width:88ch;padding-top:1.3rem;border-top:1px solid var(--line)}

  /* ---------- hero ---------- */
  .hero{padding:1rem 0 .5rem}
  .hero h1{margin-bottom:2.1rem}
  .hero-grid{display:grid;grid-template-columns:1fr 1.02fr;gap:3.4rem;align-items:start}
  .hero-grid>*{min-width:0}
  .scrollx{overflow-x:auto}
  @media (max-width:900px){.hero-grid{grid-template-columns:1fr;gap:2.2rem}}

  /* ---------- survol des cadres de graphiques : réticule d'angle ---------- */
  .pane,.ck,.tb-visual,.term,.term-detail{position:relative}
  .pane::before,.pane::after,.ck::before,.ck::after,.tb-visual::before,.tb-visual::after,
  .term::before,.term::after,.term-detail::before,.term-detail::after{
    content:"";position:absolute;width:13px;height:13px;opacity:0;pointer-events:none}
  .pane::before,.ck::before,.tb-visual::before,.term::before,.term-detail::before{
    top:-1px;left:-1px;border-top:2px solid var(--orange);border-left:2px solid var(--orange)}
  .pane::after,.ck::after,.tb-visual::after,.term::after,.term-detail::after{
    bottom:-1px;right:-1px;border-bottom:2px solid var(--orange);border-right:2px solid var(--orange)}
  .pane:hover::before,.pane:hover::after,.ck:hover::before,.ck:hover::after,
  .tb-visual:hover::before,.tb-visual:hover::after,.term:hover::before,.term:hover::after,
  .term-detail:hover::before,.term-detail:hover::after{opacity:1}
  .pane:hover,.ck:hover,.tb-visual:hover,.term:hover,.term-detail:hover{
    border-color:color-mix(in srgb,var(--orange) 42%,var(--line))}
  .ck:hover .ck-t{color:var(--orange)}

  /* ---------- panneaux type terminal ---------- */
  .pane{background:var(--mist);border:1px solid var(--line)}
  .pane-h{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:.5rem .8rem;
    border-bottom:1px solid var(--line);font-family:var(--font-mono);font-size:.74rem;color:var(--muted)}
  .pane-h b{color:var(--head);font-weight:600}
  .pane-f{padding:.55rem .8rem;border-top:1px solid var(--line);font-family:var(--font-mono);font-size:.72rem;color:var(--muted)}
  .chain{width:100%;border-collapse:collapse;font-family:var(--font-mono);font-size:.8rem;font-variant-numeric:tabular-nums}
  @media (max-width:420px){.chain{font-size:.72rem}.chain th,.chain td{padding-left:.5rem;padding-right:.5rem}}
  .chain th{font-weight:400;color:var(--muted);text-align:right;padding:.4rem .8rem;border-bottom:1px solid var(--line);font-size:.71rem}
  .chain th:first-child{text-align:left}
  .chain td{padding:.32rem .8rem;text-align:right;border-bottom:1px solid var(--rule-soft)}
  .chain td:first-child{text-align:left;color:var(--muted)}
  .chain tr:last-child td{border-bottom:0}
  .chain tr.spot td{background:var(--band);color:var(--head)}
  .chain tr.spot td:first-child{color:var(--orange);font-weight:600}
  .chain .c{color:var(--blue)} .chain .p{color:var(--orange)}
  .chain tbody tr{transition:background .25s ease}
  .pane-h b{font-variant-numeric:tabular-nums}

  /* ---------- listes en lignes (remplacent les cartes) ---------- */
  .rows{margin-top:1.6rem}
  .row-i{display:grid;grid-template-columns:2.6rem 15rem 1fr;gap:1.8rem;padding:1.5rem 0;border-top:1px solid var(--line)}
  .row-i:last-child{border-bottom:1px solid var(--line)}
  .row-i .idx{font-family:var(--font-mono);font-size:.8rem;color:var(--orange)}
  .row-i .who{font-family:var(--font-mono);font-size:.77rem;color:var(--muted)}
  .row-i p{margin:0;font-size:.95rem;color:var(--muted);max-width:60ch}
  .row-i .go{display:inline-block;margin-top:.7rem;color:var(--head);text-decoration:none;font-weight:600;font-size:.9rem;
    box-shadow:0 1px 0 var(--orange)}
  .row-i .go:hover{box-shadow:0 2px 0 var(--orange)}
  @media (max-width:820px){.row-i{grid-template-columns:2.2rem 1fr;gap:1rem}.row-i>div:last-child{grid-column:2}}

  /* ---------- colonnes ---------- */
  .pair{display:grid;grid-template-columns:1fr 1fr;gap:2.6rem}
  .pair.center{align-items:center} .pair.top{align-items:start}
  @media (max-width:820px){.pair{grid-template-columns:1fr;gap:1.8rem}}
  .leg{padding-left:1rem;border-left:2px solid var(--blue)}
  .leg.b{border-left-color:var(--orange)}
  .three{display:grid;grid-template-columns:repeat(3,1fr);gap:2.4rem}
  @media (max-width:820px){.three{grid-template-columns:1fr;gap:1.8rem}}
  .three .n{font-family:var(--font-mono);font-size:.8rem;color:var(--orange);margin-bottom:.3rem}
  .formats{display:grid;grid-template-columns:1fr 1fr;gap:2.6rem}
  @media (max-width:820px){.formats{grid-template-columns:1fr}}
  .price{font-family:var(--font-mono);font-weight:600;font-size:1.3rem;color:var(--head);margin:.4rem 0}
  .price-per{font-size:.8rem;font-weight:400;color:var(--muted)}
  .cgv h2{font-size:1.15rem;margin:2rem 0 .6rem}
  .cgv .block h2:first-child{margin-top:0}
  .cgv p,.cgv-list{max-width:78ch}
  .cgv-list{padding-left:1.1rem;margin:0 0 1em}
  .cgv-list li{margin-bottom:.5rem}
  .cgv-form{background:var(--mist);border:1px solid var(--line);padding:1.1rem 1.2rem;max-width:78ch}
  .cgv-form p{margin:.4rem 0}
  .offers{display:grid;grid-template-columns:repeat(6,1fr);gap:1rem;margin-top:1.6rem}
  .offers .offer{grid-column:span 2}
  .offers .offer.wide{grid-column:span 3}
  @media (max-width:1000px){.offers{grid-template-columns:1fr 1fr}.offers .offer,.offers .offer.wide{grid-column:auto}}
  @media (max-width:640px){.offers{grid-template-columns:1fr}}
  .offer{display:flex;flex-direction:column;background:var(--mist);border:1px solid var(--line);padding:1.2rem 1.2rem 1.3rem}
  .offer:hover{border-color:color-mix(in srgb,var(--orange) 42%,var(--line))}
  .offer.main{border-color:var(--orange);box-shadow:inset 0 3px 0 var(--orange)}
  .off-lvl{font-family:var(--font-mono);font-size:.74rem;color:var(--orange);margin:0 0 .5rem}
  .off-tag{display:inline-block;margin-left:.5rem;padding:.08rem .45rem;background:var(--orange);color:var(--btn-primary-fg);font-size:.68rem}
  .offer h3{margin:0 0 .6rem}
.off-pitch{margin:-.25rem 0 .9rem;font-size:.95rem;line-height:1.45;color:var(--muted)}
.off-list strong{color:var(--ink-strong,var(--ink));font-weight:600}
  .off-price{font-family:var(--font-mono);font-weight:600;font-size:1.7rem;color:var(--head);line-height:1.1;
    padding-bottom:.9rem;margin-bottom:.9rem;border-bottom:1px solid var(--line)}
  .off-price span{display:block;font-size:.76rem;font-weight:400;color:var(--muted);margin-top:.3rem}
  .off-list{list-style:none;margin:0 0 1.3rem;padding:0;font-size:.92rem;color:var(--ink)}
  .off-list li{position:relative;padding-left:1.1rem;margin-bottom:.45rem}
  .off-list li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;background:var(--blue)}
  .offer .btn{margin-top:auto;align-self:flex-start}
  .callout.prelaunch{border-left-color:var(--orange);max-width:none}
  .waitlist{display:grid;grid-template-columns:1fr 2.2fr;gap:2rem;align-items:start;margin-top:2rem;
    background:var(--mist);border:1px solid var(--line);border-top:3px solid var(--orange);padding:1.3rem 1.4rem}
  @media (max-width:820px){.waitlist{grid-template-columns:1fr;gap:1rem}}
  .waitlist h3{margin:0 0 .4rem}
  .waitlist p{margin:0;font-size:.94rem;color:var(--muted)}
  .wait-fields{display:grid;grid-template-columns:minmax(17rem,1.3fr) 1fr auto;gap:.8rem;align-items:end}
  @media (max-width:640px){.wait-fields{grid-template-columns:1fr}}
  .wait-fields .btn{white-space:nowrap}
  .waitlist .sig{margin-top:.9rem}

  /* ---------- étapes ---------- */
  .steps{list-style:none;margin:0;padding:0;counter-reset:s}
  .steps li{position:relative;padding:0 0 1.9rem 3rem;border-left:1px solid var(--line);margin-left:.9rem}
  .steps li:last-child{padding-bottom:0}
  .steps li::before{counter-increment:s;content:"0" counter(s);position:absolute;left:-.9rem;top:0;width:1.8rem;
    background:var(--paper);color:var(--orange);font-family:var(--font-mono);font-size:.78rem;text-align:center}
  .steps h3{margin-bottom:.3em}
  .lvl-t{font-size:clamp(1.25rem,1.9vw,1.55rem);margin:0 0 .5rem}
  .mod-kw{display:flex;flex-wrap:wrap;gap:.4rem;margin:.7rem 0 0;max-width:none}
  .mod-kw span{font-family:var(--font-mono);font-size:.7rem;line-height:1.2;padding:.28rem .55rem;border:1px solid var(--line);
    color:var(--ink);background:color-mix(in srgb,var(--surface) 70%,transparent)}
  .transv{border:1px solid color-mix(in srgb,var(--orange) 40%,var(--line));padding:1.6rem 1.7rem;
    background:color-mix(in srgb,var(--surface) 80%,transparent)}
  .transv-f{display:flex;align-items:center;justify-content:space-between;gap:1rem 1.5rem;flex-wrap:wrap;margin-top:1.3rem;padding-top:1.1rem;border-top:1px solid var(--line)}
  .transv-f p{margin:0;font-size:.92rem;color:var(--ink)}
  .transv .mod-list{list-style:none;margin:.9rem 0 0;padding:0;display:grid;gap:.6rem}
  .transv .mod-list li{position:relative;padding-left:1.1rem;color:var(--ink);font-size:.95rem;max-width:80ch}
  .transv .mod-list li::before{content:"";position:absolute;left:0;top:.75em;width:.45rem;height:1px;background:var(--orange)}
  .lvl-intro{margin:-.3rem 0 1.5rem;max-width:62ch;color:var(--ink)}
  .steps.mods>li{padding-bottom:2.3rem}
  .steps.mods>li:last-child{padding-bottom:0}
  .steps.mods h3{margin:0 0 .3em;font-size:1.05rem}
  .mod-p{margin:0;max-width:66ch;color:var(--muted)}
  .steps .mod-list{list-style:none;margin:.8rem 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:.45rem 2rem;max-width:62rem}
  .steps .mod-list li{border:0;margin:0;padding:0 0 0 1.1rem;font-size:.93rem;line-height:1.45;color:var(--ink)}
  .steps .mod-list li::before{content:"";counter-increment:none;left:0;top:.62em;width:.45rem;height:1px;background:var(--orange)}
  .mod-goal{margin:.9rem 0 0;font-size:.93rem;color:var(--head)}
  .mod-goal span{font-family:var(--font-mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--orange);margin-right:.5rem}
  @media (max-width:760px){.steps .mod-list{grid-template-columns:1fr}}

  /* ---------- calculateurs ---------- */
  .calc{background:color-mix(in srgb,var(--surface) 88%,transparent);border:1px solid var(--line);padding:1.2rem;
    -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
  .calc h3{font-family:var(--font-mono);font-weight:400;font-size:.76rem;color:var(--muted);margin:1.3rem 0 .6rem}
  .fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.85rem;margin-bottom:.9rem}
  label{display:block;font-size:.82rem;color:var(--muted);margin-bottom:.22rem}
  label strong{font-family:var(--font-mono);color:var(--head);font-weight:600}
  input,textarea,select{width:100%;font:inherit;font-size:.92rem;padding:.52rem .65rem;border:1px solid var(--line);
    border-radius:0;background:var(--paper);color:var(--ink)}
  input[type=range]{padding:0;border:0;background:none;accent-color:var(--orange)}
  .calc table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums}
  .calc td{padding:.42rem 0;border-bottom:1px solid var(--rule-soft);font-size:.9rem}
  .calc td:last-child{text-align:right;font-family:var(--font-mono);font-weight:600;color:var(--head)}
  .calc tr.res td{border-bottom:0;border-top:1px solid var(--line);padding-top:.6rem}
  .calc td.big{font-size:1.3rem}
  .sig{margin-top:1rem;padding:.75rem .9rem;font-size:.92rem;border-left:2px solid var(--line);background:var(--paper)}
  .sig.short{border-left-color:var(--orange)}
  .sig.long{border-left-color:var(--blue)}
  .leg-row{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:.45rem;margin-bottom:.45rem}
  .leg-head span{font-family:var(--font-mono);font-size:.72rem;color:var(--muted)}
  @media (max-width:600px){.leg-row{grid-template-columns:1fr 1fr}}

  /* ---------- cockpit ---------- */
  .cockpit{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
  @media (max-width:620px){.cockpit{grid-template-columns:1fr}}
  .ck{margin:0;background:color-mix(in srgb,var(--surface) 88%,transparent);border:1px solid var(--line);padding:.85rem .95rem .6rem;min-width:0;
    -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
  .ck figcaption{display:flex;justify-content:space-between;align-items:baseline;gap:.8rem;margin:0}
  .ck-t{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);transition:color .25s ease}
  .ck-v{font-family:var(--font-mono);white-space:nowrap;font-variant-numeric:tabular-nums}
  .ck-v b{font-weight:600;font-size:.95rem;color:var(--head)}
  .ck-v i{font-style:normal;font-size:.7rem;color:var(--muted);margin-left:.55rem}
  .ck-v i.up::before{content:"\25B2\00a0";color:var(--blue);font-size:.58rem;vertical-align:1px}
  .ck-v i.dn::before{content:"\25BC\00a0";color:var(--orange);font-size:.58rem;vertical-align:1px}
  .ck-m{font-family:var(--font-mono);font-size:.64rem;color:var(--muted);opacity:.8;margin:.2rem 0 .6rem;max-width:none}
  .ck-plot{cursor:crosshair;touch-action:pan-y}
  .ck-plot svg{display:block;width:100%;height:auto;overflow:visible}
  .ck-tx{font-family:var(--font-mono);font-size:10.5px;fill:var(--muted)}
  .ck-tag{font-size:10px;font-weight:600}
  .ck-grid,.ck-axis{stroke:var(--line);stroke-width:1}
  .ck-zero{stroke:var(--muted);stroke-width:1;opacity:.55}
  .ck-lvl{stroke:var(--orange);stroke-width:1;opacity:.45}
  .ck-lvl-p{stroke:var(--muted);opacity:.6}
  .ck-thr{stroke:var(--orange);stroke-width:1;opacity:.55}
  .ck-band{fill:var(--blue);opacity:.07}
  .ck-cur{stroke:var(--head);stroke-width:1;opacity:.32}
  .ck-hot{fill:var(--head);opacity:.05}
  .ck-strong{fill:var(--head);font-weight:600}
  .ck-dim{opacity:.7}
  .ck-spot{stroke:var(--orange);stroke-width:1;opacity:.55}
  @media (prefers-reduced-motion:no-preference){
    .ck-ping{transform-box:fill-box;transform-origin:center;opacity:.55;animation:ckPing 1.2s ease-out forwards}
    @keyframes ckPing{to{transform:scale(3.2);opacity:0}}
  }
  /* progression dans la séquence des compétences */
  .rows{position:relative;padding-left:0}
  .rows-fill{position:absolute;left:-14px;top:0;width:2px;height:100%;background:var(--orange);
    transform:scaleY(1);transform-origin:top;pointer-events:none}
  @media (max-width:820px){.rows-fill{left:-8px}}
  .row-i .idx,.row-i h3{transition:color .35s ease}
  .row-i:not(.on) .idx{color:var(--muted)}
  .row-i:not(.on) h3{color:var(--ink)}


  /* ---------- flux ---------- */
  .sim{font-family:var(--font-mono);font-size:.7rem;color:var(--btn-primary-fg);background:var(--orange);padding:.1rem .4rem;margin-right:.4rem}
  /* ---------- panneau terminal du flux ---------- */
  .term-stage{margin-top:1.6rem;perspective:1050px;perspective-origin:50% 8%}
  .term{background:color-mix(in srgb,var(--surface) 82%,transparent);border:1px solid var(--line);
    transform-origin:50% 0%}
  .term-top{display:flex;align-items:center;gap:1.4rem;flex-wrap:wrap;padding:.7rem .9rem;border-bottom:1px solid var(--line)}
  .term-title{font-family:var(--font-body);font-weight:600;color:var(--head);font-size:.95rem}
  .term-stats{display:flex;gap:1.1rem;font-family:var(--font-mono);font-size:.74rem;color:var(--muted);white-space:nowrap}
  .term-stats b{font-weight:400}
  .term-stats i{font-style:normal;color:var(--head)}
  .term-ctl{display:flex;align-items:center;gap:.7rem;margin-left:auto;flex-wrap:wrap}
  .pills{display:inline-flex;border:1px solid var(--line)}
  .pills button{font:inherit;font-family:var(--font-mono);font-size:.72rem;color:var(--muted);background:none;
    border:0;padding:.3rem .62rem;cursor:pointer}
  .pills button+button{border-left:1px solid var(--line)}
  .pills button.on{background:var(--band);color:var(--head)}
  .pills button:hover{color:var(--head)}
  .term-min{display:flex;align-items:center;gap:.4rem;margin:0;font-family:var(--font-mono);font-size:.72rem;color:var(--muted);white-space:nowrap}
  .term-min b{color:var(--head);font-weight:600}
  .term-min input{width:5.5rem;padding:0;border:0;background:none;accent-color:var(--orange)}
  .pill-btn{font:inherit;font-family:var(--font-mono);font-size:.72rem;color:var(--muted);background:none;
    border:1px solid var(--line);padding:.3rem .7rem;cursor:pointer}
  .pill-btn:hover{color:var(--head);border-color:var(--orange)}
  .term-tab{width:100%;min-width:1180px;border-collapse:collapse;font-family:var(--font-mono);
    font-size:.78rem;font-variant-numeric:tabular-nums}
  .term-tab th{font-weight:400;color:var(--muted);font-size:.68rem;text-align:right;padding:.5rem .7rem;
    border-bottom:1px solid var(--line);white-space:nowrap}
  .term-tab th:nth-child(1),.term-tab th:nth-child(3),.term-tab th:nth-child(6),
  .term-tab th:nth-child(8),.term-tab th:nth-child(9),.term-tab th:nth-child(12){text-align:left}
  .term-tab td{padding:.42rem .7rem;text-align:right;border-bottom:1px solid var(--rule-soft);white-space:nowrap;color:var(--ink)}
  .term-tab tr:last-child td{border-bottom:0}
  .term-tab tbody tr{cursor:pointer}
  .term-tab tbody tr:hover td{background:var(--band)}
  .term-tab tbody tr.on td{background:var(--band);box-shadow:inset 2px 0 0 var(--orange)}
  .t-h{color:var(--muted);text-align:left!important;font-size:.72rem}
  .t-val{font-weight:600;color:var(--head)}
  .t-tk{text-align:left!important}
  .t-tk span{display:inline-block;border:1px solid;padding:.06rem .42rem;font-weight:600;font-size:.72rem}
  .t-tk .up{color:var(--blue);border-color:color-mix(in srgb,var(--blue) 55%,transparent)}
  .t-tk .dn{color:var(--orange);border-color:color-mix(in srgb,var(--orange) 55%,transparent)}
  .t-pc{text-align:left!important;font-weight:600;font-size:.72rem}
  .t-pc.c{color:var(--blue)} .t-pc.p{color:var(--orange)}
  .t-ex{text-align:left!important;color:var(--muted);font-size:.72rem}
  .t-ty{text-align:left!important;font-size:.72rem}
  .t-ty.sweep{color:var(--orange)} .t-ty.bloc{color:var(--blue)} .t-ty.frac{color:var(--muted)}
  .t-sc{text-align:left!important}
  .t-sc i{display:inline-block;width:64px;height:5px;background:var(--rule-soft);margin-right:.45rem;vertical-align:middle}
  .t-sc i b{display:block;height:100%}
  .t-dim{color:var(--muted)}
  .term-foot{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding:.6rem .9rem;
    border-top:1px solid var(--line);font-family:var(--font-mono);font-size:.7rem;color:var(--muted)}
  .term-detail{margin-top:1rem;background:var(--mist);border:1px solid var(--line);padding:1rem 1.1rem;position:relative}
  .term-detail h4{margin:0 0 .8rem;font-family:var(--font-body);font-weight:600;font-size:1rem;color:var(--head)}
  .term-grid{display:grid;grid-template-columns:1.15fr 1fr 1fr;gap:1.6rem;align-items:start}
  @media (max-width:900px){.term-grid{grid-template-columns:1fr}}
  .term-grid table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
  .term-grid td{padding:.34rem 0;border-bottom:1px solid var(--rule-soft);font-size:.86rem}
  .term-grid td:last-child{text-align:right;font-family:var(--font-mono);font-weight:600;color:var(--head)}
  .term-close{position:absolute;top:.5rem;right:.6rem;background:none;border:0;color:var(--muted);
    font:inherit;font-size:1.1rem;cursor:pointer;padding:.1rem .4rem}
  .term-close:hover{color:var(--head)}
  @media (max-width:820px){
    .term-top{gap:.6rem}
    .term-ctl{margin-left:0;width:100%;gap:.5rem}
    .term-stats{font-size:.7rem;gap:.35rem .8rem;white-space:normal;flex-wrap:wrap;min-width:0}
    .term-min{flex-wrap:wrap;min-width:0}
    .term-min input{width:4.5rem}
    .term,.term-top,.term .scrollx{min-width:0}
  }
  /* ---------- boîte à outils ---------- */
  .toolbox{display:grid;grid-template-columns:1fr 1.05fr;gap:2.2rem;align-items:center;
    background:var(--mist);border:1px solid var(--line);padding:1.8rem}
  @media (max-width:860px){.toolbox{grid-template-columns:1fr;padding:1.2rem}}

  /* ---------- FAQ ---------- */
  details{border-top:1px solid var(--line);padding:.95rem 0}
  details:last-of-type{border-bottom:1px solid var(--line)}
  summary{font-weight:600;color:var(--head);cursor:pointer;list-style:none;position:relative;padding-right:2rem;font-size:1rem}
  summary::-webkit-details-marker{display:none}
  summary::after{content:"+";position:absolute;right:.2rem;top:50%;transform:translateY(-50%);color:var(--orange);
    font-family:var(--font-mono);font-size:1.15rem}
  details[open] summary::after{content:"–"}
  details p{margin-top:.7rem;color:var(--muted)}

  /* ---------- divers ---------- */
  dl.gloss{display:grid;grid-template-columns:max-content 1fr;gap:.55rem 1.6rem;max-width:80ch}
  dl.gloss dt{font-family:var(--font-mono);font-size:.86rem;color:var(--head)}
  dl.gloss dd{margin:0;color:var(--muted);font-size:.95rem}
  @media (max-width:620px){dl.gloss{grid-template-columns:1fr}dl.gloss dd{margin-bottom:.6rem}}
  .warn{border-left:2px solid var(--orange);padding:.85rem 1.1rem;background:var(--mist);font-size:.92rem;max-width:80ch}
  .callout{border-left:2px solid var(--blue);padding:.85rem 1.1rem;background:var(--mist);font-size:.95rem;max-width:80ch;margin:1.3rem 0 0}
  .todo{background:var(--todo-bg);color:var(--todo-fg);padding:.1rem .35rem;font-family:var(--font-mono);font-size:.82em}
  .counter{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
  footer{border-top:1px solid var(--line);padding:1.8rem 0;margin-top:3.5rem;color:var(--muted);font-family:var(--font-mono);font-size:.76rem}
  footer .wrap{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}
  footer a{color:var(--muted)}
  .tb-visual{border:1px solid var(--line)}



  /* ---------- hero : titre-affiche + carte gamma ---------- */
  section[data-page="accueil"]{padding-top:0;overflow-x:clip}
  .hero{display:flex;align-items:center;padding:clamp(2.8rem,7vh,4.6rem) 0 3.6rem}
  @media (max-width:700px){.hero{min-height:0;padding:2rem 0 2.6rem}}
  .hero-in{width:100%}
  .hero .hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(2rem,4vw,4rem);align-items:start;width:100%;margin-top:clamp(1.8rem,2.8vw,2.6rem)}
  .hero-txt{padding-top:.4rem;position:relative;isolation:isolate}
  .hero-txt::before{content:"";position:absolute;inset:-2.5rem -4rem -2.5rem -4rem;z-index:-1;pointer-events:none;
    background:radial-gradient(closest-side,color-mix(in srgb,var(--paper) 72%,transparent),transparent)}
  @media (max-width:980px){.hero .hero-grid{grid-template-columns:1fr;gap:2.6rem}}
  .hero h1.hero-t{margin:0}
  .hero h1.hero-t>span{display:block}
  .ht-a{font-size:clamp(2.1rem,calc(min(1080px,100vw - 80px) * .049),3.3rem);line-height:1.02;letter-spacing:-.03em;text-wrap:balance}
  .ht-b{font-family:var(--font-head);font-weight:500;font-size:clamp(1.25rem,calc(min(1080px,100vw - 80px) * .031),2.1rem);line-height:1.1;letter-spacing:-.03em;
    color:var(--ink);margin-top:.35em;text-wrap:balance}
  @media (min-width:760px){.ht-a,.ht-b{white-space:nowrap}}
  .hero-lead{font-size:clamp(1.08rem,1.3vw,1.28rem);line-height:1.6;color:var(--ink);max-width:40ch;margin:0 0 .8rem}
  .hero-note{font-size:.93rem;color:var(--muted);margin:0}
  .hero .actions{margin-top:2.1rem}
  .btn-lg{font-size:1rem;padding:.95rem 1.55rem}
  .gx-wrap{position:relative;min-width:0}
  .gx-wrap::after{content:"";position:absolute;inset:-12% 0 -10% -8%;z-index:-1;pointer-events:none;filter:blur(18px);
    background:radial-gradient(48% 42% at 62% 38%,color-mix(in srgb,var(--blue) 24%,transparent),transparent 72%),
               radial-gradient(34% 30% at 26% 84%,color-mix(in srgb,var(--orange) 15%,transparent),transparent 72%)}
  .gx{margin:0;border:1px solid var(--line);background:color-mix(in srgb,var(--surface) 78%,transparent);
    -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);box-shadow:0 42px 90px -46px rgba(0,0,0,.75)}
  [data-theme="light"] .gx{box-shadow:0 36px 80px -46px rgba(16,25,35,.35)}
  .gx-h{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;padding:.7rem 1.05rem;border-bottom:1px solid var(--line)}
  .gx-sub{font-family:var(--font-mono);font-size:.68rem;line-height:1.55;color:var(--muted);text-align:right;align-self:center}
  .gx-t small{display:block;font-family:var(--font-mono);font-weight:400;font-size:.68rem;color:var(--muted);margin-top:.25rem}
  .gx-v{font-family:var(--font-mono);white-space:nowrap}
  .gx-v b{display:block;font-size:1.08rem;font-weight:600;color:var(--head);font-variant-numeric:tabular-nums}
  .gx-v i{font-style:normal;font-size:.68rem;color:var(--muted)}
  .gx-v i::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:.4rem;vertical-align:1px;background:var(--muted)}
  .gx-v i.pos::before{background:var(--blue)} .gx-v i.neg::before{background:var(--orange)}
  .gx-plot{padding:.35rem .2rem 0}
  @media (max-width:520px){.gx-h{padding:.75rem .85rem}.gx-v .rg2{display:none}.gx-f{padding:.6rem .85rem}}
  .gx-plot canvas{display:block}
  .gx-f{display:flex;flex-wrap:wrap;gap:.45rem 1.2rem;padding:.6rem 1.05rem;border-top:1px solid var(--line);font-family:var(--font-mono);font-size:.68rem;color:var(--muted)}
  .gx-f .k::before{content:"";display:inline-block;width:16px;height:0;margin-right:.45rem;vertical-align:middle;border-top:2px solid var(--muted)}
  .gx-f .k-c::before{border-top-color:var(--blue)} .gx-f .k-p::before{border-top-color:var(--orange)}
  .gx-f .k-z::before{border-top:1.5px dashed var(--head);opacity:.7}
  .gx-f .k-e::before{height:9px;border:0;background:color-mix(in srgb,var(--blue) 22%,transparent);vertical-align:-1px}


  /* ---------- hero : rotation des vues ---------- */
  .gx-tabs{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--line)}
  .gx-tabs button{position:relative;background:none;border:0;border-right:1px solid var(--line);padding:.6rem .4rem .65rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer;
    font-family:var(--font-mono);font-size:.68rem;color:var(--muted);text-align:center;transition:color .25s ease,background-color .25s ease;min-width:0}
  .gx-tabs button:last-child{border-right:0}
  .gx-tabs button:hover{color:var(--head)}
  .gx-tabs button[aria-selected="true"]{color:var(--head);background:color-mix(in srgb,var(--paper) 45%,transparent)}
  .gx-tabs button i{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:left center}
  .gx-tabs button[aria-selected="true"] i{transform:scaleX(var(--p,1))}
  .gx-tabs .ts{display:none}
  @media (max-width:560px){.gx-tabs .tl{display:none}.gx-tabs .ts{display:inline}}
  .gx-stage{display:grid}
  .gx-view{grid-area:1/1;display:flex;flex-direction:column;min-width:0;opacity:0;visibility:hidden;pointer-events:none;
    transform:translateX(18px);filter:blur(4px);transition:opacity .55s ease,transform .6s cubic-bezier(.2,.7,.2,1),filter .55s ease,visibility 0s linear .6s}
  .gx-view.on{opacity:1;visibility:visible;pointer-events:auto;transform:none;filter:none;transition:opacity .55s ease .12s,transform .6s cubic-bezier(.2,.7,.2,1) .12s,filter .55s ease .12s,visibility 0s}
  .gx-view.out{transform:translateX(-18px)}
  .gx-view>.gx-f{margin-top:auto}
  .gx-v #chMeta{display:block;font-size:.72rem;color:var(--muted);line-height:1.5;white-space:normal}
  .gx-v:has(#chMeta){min-width:0;flex:1}
  .gx-v #chMeta b{display:inline;font-size:1.08rem;color:var(--head)}
  .gx-chain{padding:.3rem .2rem 0}
  .gx-chain .chain td,.gx-chain .chain th{padding-top:.36rem;padding-bottom:.36rem}
  .gx-f .k-dot::before{width:8px;height:8px;border:0;border-radius:50%;background:var(--head);vertical-align:0}
  .gx-f .k-dot2::before{width:8px;height:8px;border:0;border-radius:50%;background:var(--orange);vertical-align:0}
  .gx-pay,.gx-pair{padding:.6rem .6rem 0}
  .gx-pay svg,.gx-pair svg{display:block;width:100%;height:auto;overflow:visible}
  #gvPayDesc{white-space:normal;max-width:34ch;display:block;line-height:1.45;margin-top:.15rem}
  #gvPayDesc::before{display:none}
  @media (prefers-reduced-motion:reduce){.gx-view,.gx-view.on{transition:none;transform:none;filter:none}}


  /* ---------- trois axes : carrousel à balayer sur mobile ---------- */
  .hx-dots{display:none}
  @media (max-width:999px){
    .hx:not(.on) .hx-count{display:block}
    .hx:not(.on) .hx-view{max-width:none;margin:1.3rem 0 0;padding:0;overflow-x:auto;overscroll-behavior-x:contain;
      scroll-snap-type:x mandatory;scroll-padding:0 40px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
    .hx:not(.on) .hx-view::-webkit-scrollbar{display:none}
    .hx:not(.on) .hx-track{display:flex;gap:14px;width:max-content;padding:0 40px}
    .hx:not(.on) .ax{flex:none;width:min(620px,calc(100vw - 96px));scroll-snap-align:start;scroll-snap-stop:always;align-self:stretch}
    .hx:not(.on) .ax:not(.act){opacity:.55}
    .hx-dots{display:flex;align-items:center;gap:.55rem;max-width:var(--max);margin:1.1rem auto 0;padding:0 40px}
    .hx-dots button{width:8px;height:8px;padding:0;border:0;border-radius:4px;background:color-mix(in srgb,var(--muted) 55%,transparent);cursor:pointer;transition:width .3s ease,background-color .3s ease}
    .hx-dots button[aria-current="true"]{width:24px;background:var(--orange)}
    .hx-hint{margin-left:auto;font-family:var(--font-mono);font-size:.68rem;color:var(--muted);transition:opacity .4s ease}
    .hx-dots.seen .hx-hint{opacity:0}
  }
  @media (max-width:620px){
    .hx:not(.on) .hx-view{scroll-padding:0 20px}
    .hx:not(.on) .hx-track{padding:0 20px;gap:12px}
    .hx:not(.on) .ax{width:calc(100vw - 52px)}
    .hx-dots{padding:0 20px}
  }


  /* ---------- fond animé par section ---------- */
  #scene{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:0;opacity:0;transition:opacity 1.6s ease}
  #scene.on{opacity:1}
  @media print{#scene{display:none}}

  /* ---------- bouton liste d'attente dans l'en-tête ---------- */
  .hd-cta{font-family:var(--font-body);font-weight:600;font-size:.8rem;line-height:1;padding:.62rem .9rem;white-space:nowrap;
    text-decoration:none;background:var(--btn-primary-bg);color:var(--btn-primary-fg);border:1px solid var(--btn-primary-bg);
    opacity:0;visibility:hidden;transform:translateY(-6px);
    transition:opacity .3s ease,transform .3s ease,visibility 0s linear .3s}
  header.compact .hd-cta{opacity:1;visibility:visible;transform:none;transition:opacity .3s ease,transform .3s ease}
  .hd-cta:hover{filter:brightness(1.07)}
  @media (max-width:560px){.hd-cta{display:none}}

  /* ---------- trois axes : piste horizontale ---------- */
  .hx{position:relative;margin-top:3rem;padding-top:3rem;border-top:1px solid var(--line)}
  .hx-head{display:flex;align-items:flex-end;justify-content:space-between;gap:1.5rem}
  .hx-head h2{margin:0}
  .hx-count{margin:0;font-family:var(--font-mono);font-size:.82rem;color:var(--muted);white-space:nowrap}
  .hx-count b{color:var(--orange);font-weight:600}
  .hx-view{max-width:var(--max);margin:1.6rem auto 0;padding:0 40px}
  @media (max-width:620px){.hx-view{padding:0 20px}}
  .hx-track{display:grid;gap:1.2rem}
  .ax{display:grid;grid-template-columns:1.05fr 1fr;gap:2.2rem;align-items:center;padding:2rem 2.1rem;margin:0;
    border:1px solid var(--line);background:color-mix(in srgb,var(--surface) 64%,transparent);
    -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
    transition:border-color .45s ease,opacity .45s ease}
  .ax.act{border-color:color-mix(in srgb,var(--orange) 42%,var(--line))}
  .ax-txt>p{font-size:.95rem;color:var(--muted);max-width:52ch}
  .ax-idx{font-family:var(--font-mono);font-size:.76rem;color:var(--muted);margin:0 0 .9rem}
  .ax-idx b{color:var(--orange);font-weight:600}
  .ax-idx span{margin-left:.6rem;padding-left:.7rem;border-left:1px solid var(--line)}
  .ax h3{font-family:var(--font-head);font-weight:700;font-size:clamp(1.2rem,1.7vw,1.5rem);letter-spacing:-.01em;line-height:1.15;margin:0 0 .8rem}
  .ax .go{display:inline-block;color:var(--head);text-decoration:none;font-weight:600;font-size:.9rem;box-shadow:0 1px 0 var(--orange)}
  .ax .go:hover{box-shadow:0 2px 0 var(--orange)}
  .ax-vis{margin:0;min-width:0}
  .ax-vis svg{display:block;width:100%;height:auto;overflow:visible}
  .ax-cap{display:flex;justify-content:space-between;gap:1rem;font-family:var(--font-mono);font-size:.68rem;color:var(--muted);
    margin-top:.5rem;letter-spacing:.02em}
  .v-ax{stroke:var(--line);stroke-width:1}
  .v-pos{fill:var(--blue)} .v-neg{fill:var(--orange)}
  .v-spot{stroke:var(--head);stroke-width:1;stroke-dasharray:3 4;opacity:.7}
  .v-txt{font-family:var(--font-mono);font-size:10px;fill:var(--muted)}
  .v-band{stroke:var(--orange);stroke-width:1;stroke-dasharray:4 5;opacity:.75}
  .v-zero{stroke:var(--line);stroke-width:1}
  .v-line{fill:none;stroke:var(--blue);stroke-width:1.6;stroke-linejoin:round}
  .v-in{fill:var(--orange)} .v-out{fill:var(--paper);stroke:var(--blue);stroke-width:1.4}
  .ax-log{font-family:var(--font-mono);font-size:.72rem;border:1px solid var(--line);background:color-mix(in srgb,var(--paper) 70%,transparent)}
  .log-h{display:flex;justify-content:space-between;padding:.55rem .8rem;border-bottom:1px solid var(--line);color:var(--muted);
    text-transform:uppercase;letter-spacing:.08em;font-size:.64rem}
  .log-h span:last-child{color:var(--orange)}
  .ax-log ol{list-style:none;margin:0;padding:.55rem .8rem .3rem}
  .ax-log li{display:grid;grid-template-columns:4.6rem 1fr auto;gap:.6rem;padding:.3rem 0;border-bottom:1px dashed var(--rule-soft);color:var(--ink)}
  .ax-log li:last-child{border-bottom:0}
  .ax-log time{color:var(--muted)}
  .ax-log b{font-weight:600;color:var(--blue);text-align:right;white-space:nowrap}
  .ax-log b.o{color:var(--orange)}
  .log-cur{display:block;padding:0 .8rem .55rem;color:var(--orange)}
  @media (max-width:760px){.ax{grid-template-columns:1fr;padding:1.5rem 1.3rem;gap:1.5rem}}
  .hx-foot{display:none}
  .hx:not(.on) .hx-count{display:none}

  /* mode épinglé (grand écran, mouvement autorisé) */
  .hx.on{padding-top:0}
  .hx.on .hx-stick{position:sticky;top:var(--hd-h,92px);height:calc(100vh - var(--hd-h,92px));overflow:hidden;
    display:flex;flex-direction:column;justify-content:center;padding-bottom:10vh}
  .hx.on .hx-head,.hx.on .hx-foot{width:100%}
  .hx.on .hx-view{max-width:none;padding:0;margin-top:2rem}
  .hx.on .hx-track{display:flex;gap:28px;width:max-content;will-change:transform}
  .hx.on .ax{width:min(800px,62vw);flex:none;min-height:min(420px,calc(100vh - var(--hd-h,92px) - 250px))}
  .hx.on .ax:not(.act){opacity:.42}
  .hx.on .hx-foot{display:flex;align-items:center;gap:1rem;margin-top:1.8rem;font-family:var(--font-mono);font-size:.68rem;
    color:var(--muted);text-transform:uppercase;letter-spacing:.1em}
  .hx-bar{flex:1;height:1px;background:var(--line);position:relative;overflow:hidden}
  .hx-bar i{position:absolute;inset:0;background:var(--orange);transform-origin:left center;transform:scaleX(.02)}
  .hx+.wrap>.block:first-child{border-top:1px solid var(--line);padding-top:3rem;margin-top:3rem}
  .hx.on+.wrap>.block:first-child{margin-top:0}

  @media (prefers-reduced-motion:no-preference){
    /* intro : l'écran se pose, puis le titre se dévoile */
    .rise{animation-duration:.8s}
    @keyframes rise{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
    .hero h1 .rise{display:inline-block;animation-name:riseBlur;animation-duration:1s}
    @keyframes riseBlur{from{opacity:0;transform:translateY(26px);filter:blur(9px)}to{opacity:1;transform:none;filter:none}}
    .intro header{animation:hdIn .8s cubic-bezier(.2,.7,.2,1) .1s both}
    @keyframes hdIn{from{opacity:0;transform:translateY(-16px)}to{opacity:1;transform:none}}
    .intro .rise.d1{animation-delay:.5s}.intro .rise.d2{animation-delay:.72s}
    .intro .rise.d3{animation-delay:1s}.intro .rise.d4{animation-delay:1.18s}
    .intro .hx-stick{animation:rise .9s cubic-bezier(.2,.7,.2,1) 1.35s both}
    /* apparitions au défilement */
    .rv{opacity:0;transform:translateY(22px);
      transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1);transition-delay:var(--rd,0s)}
    .rv.in{opacity:1;transform:none}
    /* visuels des axes : joués quand la carte devient active */
    .v-bar{transform-box:fill-box;transition:transform .75s cubic-bezier(.2,.8,.2,1);transition-delay:calc(var(--i)*38ms)}
    .v-pos{transform-origin:50% 100%} .v-neg{transform-origin:50% 0}
    .ax:not(.act) .v-bar{transform:scaleY(0)}
    .v-line{stroke-dasharray:1;stroke-dashoffset:0;transition:stroke-dashoffset 1.5s cubic-bezier(.3,.6,.3,1)}
    .ax:not(.act) .v-line{stroke-dashoffset:1}
    .v-dot{transition:opacity .35s ease;transition-delay:calc(.9s + var(--i)*120ms)}
    .ax:not(.act) .v-dot{opacity:0;transition-delay:0s}
    .ax-log li{transition:opacity .35s ease,transform .35s ease;transition-delay:calc(var(--i)*230ms)}
    .ax:not(.act) .ax-log li{opacity:0;transform:translateY(6px);transition-delay:0s}
    .log-cur{animation:blink 1s steps(2,start) infinite}
    @keyframes blink{to{visibility:hidden}}
  }

  /* ---------- mouvement : un seul moment orchestré, au chargement du hero ---------- */
  .rise{opacity:1}
  .reveal{opacity:1}
  @media (prefers-reduced-motion:no-preference){
    .rise{opacity:0;animation:rise .55s cubic-bezier(.2,.7,.2,1) forwards}
    .rise.d1{animation-delay:.02s}.rise.d2{animation-delay:.12s}.rise.d3{animation-delay:.22s}.rise.d4{animation-delay:.32s}
    @keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
    .chain tr.anim{opacity:0;animation:rowin .3s ease forwards}
    @keyframes rowin{to{opacity:1}}
    .chain td.up{animation:tickUp .7s ease-out}
    .chain td.dn{animation:tickDn .7s ease-out}
    @keyframes tickUp{0%{background:color-mix(in srgb,var(--blue) 9%,transparent)}100%{background:transparent}}
    @keyframes tickDn{0%{background:color-mix(in srgb,var(--orange) 9%,transparent)}100%{background:transparent}}
    .pane-h b.up{animation:txUp .85s ease-out} .pane-h b.dn{animation:txDn .85s ease-out}
    @keyframes txUp{0%{color:color-mix(in srgb,var(--blue) 60%,var(--head))}100%{color:var(--head)}}
    @keyframes txDn{0%{color:color-mix(in srgb,var(--orange) 60%,var(--head))}100%{color:var(--head)}}
    .draw{stroke-dasharray:var(--len);stroke-dashoffset:var(--len);animation:draw 1.3s ease-out .35s forwards}
    .draw.b{animation-delay:.5s} .draw.s{animation-delay:.8s;animation-duration:1s}
    @keyframes draw{to{stroke-dashoffset:0}}
    .sig-dot{opacity:0;animation:pop .35s cubic-bezier(.2,.9,.3,1.4) 1.8s forwards}
    @keyframes pop{from{opacity:0;transform:scale(0)}to{opacity:1;transform:scale(1)}}
    #prog{transition:width .12s linear}
    .term{will-change:transform,opacity,box-shadow}
    .rail-l .rail-run{animation:railUp 78s linear infinite}
    .rail-r .rail-run{animation:railUp 96s linear infinite;animation-direction:reverse}
    @keyframes railUp{from{transform:translateY(0)}to{transform:translateY(-50%)}}
    .pane::before,.pane::after,.ck::before,.ck::after,.tb-visual::before,.tb-visual::after,
    .term::before,.term::after,.term-detail::before,.term-detail::after{
      transition:opacity .22s ease,transform .28s cubic-bezier(.2,.8,.2,1)}
    .pane::before,.ck::before,.tb-visual::before,.term::before,.term-detail::before{transform:translate(5px,5px)}
    .pane::after,.ck::after,.tb-visual::after,.term::after,.term-detail::after{transform:translate(-5px,-5px)}
    .pane:hover::before,.pane:hover::after,.ck:hover::before,.ck:hover::after,
    .tb-visual:hover::before,.tb-visual:hover::after,.term:hover::before,.term:hover::after,
    .term-detail:hover::before,.term-detail:hover::after{transform:none}
    .pane,.ck,.tb-visual,.term,.term-detail,.ck figcaption{transition:border-color .25s ease,color .25s ease}
    body::after{animation:aurora 44s ease-in-out infinite alternate}
    @keyframes aurora{from{transform:translate3d(-1.5%,-1%,0) scale(1)}to{transform:translate3d(1.8%,1.6%,0) scale(1.07)}}
    .rows-fill{transform:scaleY(0)}
    .rows.seq .rows-fill,.rows.seq-done .rows-fill{animation:fillDown 1s cubic-bezier(.3,.7,.3,1) forwards}
    @keyframes fillDown{to{transform:scaleY(1)}}
    .ck-live{animation:livebar 1.2s ease-out}
    @keyframes livebar{0%{opacity:.45}100%{opacity:1}}
    .tb-armed:not(.tb-in) svg{clip-path:inset(0 100% 0 0)}
    .tb-in svg{animation:tbWipe .95s cubic-bezier(.3,.7,.3,1) forwards}
    @keyframes tbWipe{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}
  }
  @media (prefers-reduced-motion:reduce){.sig-dot{opacity:1}}
  /* =========================================================
     MOBILE : tactile, lisibilité, fluidité
     ========================================================= */
  html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
  a,button,summary,select,input,label,.term-tab tr{-webkit-tap-highlight-color:transparent;touch-action:manipulation}
  /* effets de survol réservés aux souris : pas d'état « collé » au doigt */
  @media (hover:none){
    .pane:hover::before,.pane:hover::after,.ck:hover::before,.ck:hover::after,.tb-visual:hover::before,.tb-visual:hover::after,
    .term:hover::before,.term:hover::after,.term-detail:hover::before,.term-detail:hover::after{opacity:0}
    .pane:hover,.ck:hover,.tb-visual:hover,.term:hover,.term-detail:hover{border-color:var(--line)}
    .ck:hover .ck-t{color:var(--muted)}
    .btn:hover{border-color:var(--btn-line)} .btn.primary:hover{filter:none}
    .term-tab tbody tr:hover td{background:transparent}
    .term-tab tbody tr.on td{background:var(--band)}
    a:active,button:active,.btn:active,summary:active{opacity:.78}
  }
  /* cibles tactiles */
  @media (pointer:coarse){
    #themeBtn{width:44px;height:44px}
    .burger{min-width:44px;min-height:44px}
    .gx-tabs button{min-height:44px}
    .pills button{padding:.62rem .8rem;font-size:.76rem}
    .pill-btn{padding:.62rem .9rem;font-size:.76rem}
    .term-min input,input[type=range]{height:36px}
    .ax .go,.row-i .go{padding:.55rem 0 .2rem}
    details summary{padding-top:.6rem;padding-bottom:.6rem}
    .hx-dots button{position:relative}
    .hx-dots button::after{content:"";position:absolute;inset:-16px -8px}
    footer a{display:inline-block;padding:.6rem .2rem}
    nav a{padding-top:.95rem;padding-bottom:.95rem}
  }
  @media (max-width:760px){
    /* champs à 16 px : Safari ne zoome plus sur la page au toucher */
    input,select,textarea{font-size:16px}
    /* rythme vertical plus serré */
    section[data-page]{padding:2.2rem 0 3rem}
    .block{padding-top:2.2rem;margin-top:2.2rem}
    .bleed{margin:2.4rem 0;padding:2.4rem 0}
    .hx{padding-top:2.2rem}
    .hx+.wrap>.block:first-child{margin-top:2.2rem;padding-top:2.2rem}
    footer{margin-top:2rem}
    /* boutons pleine largeur, faciles à atteindre au pouce */
    .actions{flex-direction:column;align-items:stretch;gap:.65rem}
    .actions .btn{width:100%;text-align:center}
    .offer .btn{align-self:stretch;text-align:center}
    .hero .actions{margin-top:1.7rem}
    .btn-lg{padding:1rem 1.2rem}
    /* petits libellés lisibles */
    .gx-tabs button{font-size:.74rem}
    .gx-f,.ax-cap,.gx-sub{font-size:.72rem}
    .gx-v i{font-size:.72rem}
    .ck-m{font-size:.7rem}
    .ck-t{font-size:.72rem}
    .off-tag{font-size:.72rem}
    .log-h{font-size:.66rem}
    /* flux d'options : colonnes essentielles seulement */
    .term-tab{min-width:0}
    .term-tab th:nth-child(4),.term-tab td:nth-child(4),
    .term-tab th:nth-child(7),.term-tab td:nth-child(7),
    .term-tab th:nth-child(8),.term-tab td:nth-child(8),
    .term-tab th:nth-child(10),.term-tab td:nth-child(10),
    .term-tab th:nth-child(11),.term-tab td:nth-child(11),
    .term-tab th:nth-child(12),.term-tab td:nth-child(12),
    .term-tab th:nth-child(13),.term-tab td:nth-child(13),
    .term-tab th:nth-child(14),.term-tab td:nth-child(14){display:none}
    .term-tab th,.term-tab td{padding-left:.5rem;padding-right:.5rem}
    .term-tab{font-size:.76rem}
    .term-top{gap:.8rem}
    .term-ctl{margin-left:0;width:100%}
    /* performance : pas de flou d'arrière-plan sur les cartes (coûteux sur téléphone) */
    .gx,.ck,.calc,.ax,.transv,.about-card{-webkit-backdrop-filter:none!important;backdrop-filter:none!important}
    .gx{background:color-mix(in srgb,var(--surface) 92%,transparent)}
    .ck,.calc{background:color-mix(in srgb,var(--surface) 94%,transparent)}
    .ax{background:color-mix(in srgb,var(--surface) 90%,transparent)}
    body::after{animation:none}
    .gx-wrap::after{display:none}
    /* menu mobile : ouverture en fondu */
    nav{box-shadow:0 18px 40px -24px rgba(0,0,0,.7)}
  }
  @media (max-width:1060px){.tools{margin-left:auto}}
  @media (orientation:landscape) and (max-height:500px){
    .bar{height:60px}
    .brand .logo{height:44px}
    .hero{padding-top:1.6rem}
  }
  @media (max-width:1060px) and (prefers-reduced-motion:no-preference){
    nav.open{animation:navIn .28s cubic-bezier(.2,.7,.2,1)}
    @keyframes navIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
  }
  .gs-sep{display:none}
  @media (max-width:560px){
    .gx-h{flex-wrap:wrap;gap:.35rem}
    .gx-v{flex:1 1 100%}
    .gx-sub{order:-1;flex:1 1 100%;text-align:left;font-size:.68rem}
    .gx-sub br{display:none}
    .gs-sep{display:inline}
    #gvPayDesc{max-width:none}
  }
  @media (max-width:430px){
    .term-tab th:nth-child(1),.term-tab td:nth-child(1){display:none}
  }
  .burger[aria-expanded="true"] .bi{font-size:0}
  .burger[aria-expanded="true"] .bi::after{content:"\00d7";font-size:1.35rem;line-height:1}
  @media (max-width:380px){
    .ht-a{letter-spacing:-.035em}
    .gx-h{gap:.6rem}
  }


  /* ---------- menu flottant + panneau (téléphone) ---------- */
  .fab,.sheet,.sheet-bg{display:none}
  @media (max-width:760px),(orientation:landscape) and (max-height:500px){
    .burger{display:none!important}
    .fab{display:flex;align-items:center;gap:.6rem;position:fixed;z-index:60;right:16px;bottom:calc(16px + env(safe-area-inset-bottom));
      height:54px;padding:0 1.15rem 0 1rem;border:1px solid color-mix(in srgb,var(--orange) 55%,var(--line));
      background:color-mix(in srgb,var(--surface) 92%,transparent);color:var(--head);cursor:pointer;
      font:600 .95rem/1 var(--font-body);box-shadow:0 14px 34px -12px rgba(0,0,0,.65),0 2px 8px rgba(0,0,0,.25);
      -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
      transition:transform .35s cubic-bezier(.2,.8,.2,1),opacity .25s ease}
    [data-theme="light"] .fab{box-shadow:0 14px 30px -14px rgba(16,25,35,.45),0 2px 6px rgba(16,25,35,.12)}
    .fab-i{display:grid;gap:4px;width:18px}
    .fab-i i{display:block;height:2px;background:var(--orange);border-radius:1px}
    .fab-i i:nth-child(2){width:70%}
    .fab:active{transform:scale(.95)}
    .fab.hide{transform:translateY(12px) scale(.9);opacity:0;pointer-events:none}
    .sheet-bg{display:block;position:fixed;inset:0;z-index:70;background:rgba(4,10,16,.55);opacity:0;visibility:hidden;
      transition:opacity .3s ease,visibility 0s linear .3s}
    .sheet-bg.open{opacity:1;visibility:visible;transition:opacity .3s ease}
    .sheet{display:block;position:fixed;left:0;right:0;bottom:0;z-index:80;max-height:88svh;overflow:auto;overscroll-behavior:contain;
      background:var(--paper);border-top:1px solid var(--line);padding:0 20px calc(18px + env(safe-area-inset-bottom));
      box-shadow:0 -24px 60px -20px rgba(0,0,0,.6);transform:translateY(104%);visibility:hidden;
      transition:transform .42s cubic-bezier(.2,.85,.2,1),visibility 0s linear .42s}
    .sheet.open{transform:none;visibility:visible;transition:transform .42s cubic-bezier(.2,.85,.2,1)}
    .sheet.drag{transition:none}
    .sheet-h{position:sticky;top:0;display:flex;justify-content:center;align-items:center;height:48px;background:var(--paper);touch-action:none}
    .sheet-grab{width:44px;height:4px;border-radius:2px;background:var(--line)}
    .sheet-x{position:absolute;right:-6px;top:2px;width:44px;height:44px;border:0;background:none;color:var(--muted);font-size:1.6rem;line-height:1;cursor:pointer}
    nav.sheet-nav{display:block;position:static;margin:0;background:none;border:0;box-shadow:none;animation:none}
    .sheet-nav ul{list-style:none;margin:0;padding:0;display:block}
    .sheet-nav li{border-bottom:1px solid var(--rule-soft)}
    nav.sheet-nav a{display:flex;align-items:center;justify-content:space-between;min-height:54px;padding:0 .2rem;border:0;box-shadow:none;
      font-family:var(--font-head);font-weight:700;font-size:1.3rem;letter-spacing:-.01em;color:var(--head);text-decoration:none}
    .sheet-nav a::after{content:"";width:7px;height:7px;border-top:1.5px solid var(--muted);border-right:1.5px solid var(--muted);transform:rotate(45deg);margin-right:.35rem}
    nav.sheet-nav a[aria-current="page"]{color:var(--orange);box-shadow:none}
    .sheet-nav a[aria-current="page"]::after{border-color:var(--orange)}
    .sheet-f{display:grid;gap:.6rem;margin-top:1.3rem}
    .sheet-f .btn{width:100%;text-align:center;padding:1rem 1.2rem}
    footer{padding-bottom:calc(88px + env(safe-area-inset-bottom))}
    #hxDots{padding-right:120px}
  }
  @media (orientation:landscape) and (max-height:500px){
    .sheet{padding-left:max(24px,env(safe-area-inset-left));padding-right:max(24px,env(safe-area-inset-right))}
    nav.sheet-nav ul{display:grid;grid-template-columns:1fr 1fr;column-gap:2rem}
    nav.sheet-nav a{min-height:46px;font-size:1.1rem}
    .sheet-f{grid-template-columns:1fr 1fr;margin-top:1rem}
    .sheet-h{height:40px}
  }
  @media (prefers-reduced-motion:no-preference){
    .sheet.open .sheet-nav li{animation:sheetIn .38s cubic-bezier(.2,.8,.2,1) both}
    .sheet.open .sheet-nav li:nth-child(2){animation-delay:.03s}.sheet.open .sheet-nav li:nth-child(3){animation-delay:.06s}
    .sheet.open .sheet-nav li:nth-child(4){animation-delay:.09s}.sheet.open .sheet-nav li:nth-child(5){animation-delay:.12s}
    .sheet.open .sheet-nav li:nth-child(6){animation-delay:.15s}.sheet.open .sheet-nav li:nth-child(7){animation-delay:.18s}
    @keyframes sheetIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
    .intro .fab{animation:fabIn .5s cubic-bezier(.2,.8,.2,1) 1.4s both}
    @keyframes fabIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
  }
  @media (max-width:760px) and (prefers-reduced-motion:reduce){.sheet,.sheet.open,.sheet-bg,.sheet-bg.open{transition:none}}

  /* ---------- hero : sphère de code Python au-dessus de l'eau (WebGL2), toujours en nuit ---------- */
  /* --u : 1px jusqu'à 1440 px de large, puis grandit avec l'écran (largeur et hauteur), plafonné à 1,6px.
     Le hero est dessiné en multiples de --u ; sa largeur (--cw) s'ouvre plus vite que le reste, pour laisser de l'air autour de la sphère.
     L'en-tête prend la même largeur (alignement) mais grandit beaucoup moins (--uh, 1,21 au plus). */
  :root{--u:clamp(1px,min(calc(100vw / 1440),calc(100vh / 820)),1.6px);--uh:calc(1px + (var(--u) - 1px) * .35);--cw:calc(1160px + (var(--u) - 1px) * 1500);--hh:93px}
  @media (min-width:1441px) and (min-height:821px){:root{--hh:calc(92 * var(--uh) + 1px)}}
  @media (max-width:700px){:root{--hh:69px}}
  @media (orientation:landscape) and (max-height:500px){:root{--hh:61px}}
  main section[data-page="accueil"]{padding-top:0}
  .h3d{--orange:#E08A3C;--paper:#0E1821;--head:#F0F6FA;--ink:#CDD9E3;
    --soft:rgba(226,234,242,.76);--dim:rgba(208,220,232,.52);--hair:rgba(255,255,255,.2);--hair2:rgba(255,255,255,.1);--wh:#EEF3F8;
    position:relative;margin-top:calc(-1 * var(--hh));min-height:100vh;min-height:100svh;overflow:hidden;isolation:isolate;
    background:#08111a;color:var(--ink);font-family:var(--font-body)}
  .h3-stage{position:absolute;inset:0;z-index:-1;pointer-events:none}
  #h3Scene{display:block;width:100%;height:100%}
  .h3-stage::after{content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(8,15,22,.72) 0,rgba(8,15,22,.62) calc(50% - 560*var(--u)),rgba(8,15,22,.38) calc(50% - 300*var(--u)),rgba(8,15,22,0) calc(50% - 110*var(--u)),
        rgba(8,15,22,0) calc(50% + 260*var(--u)),rgba(8,15,22,.4) calc(50% + 430*var(--u)),rgba(8,15,22,.66) 100%),
      linear-gradient(180deg,rgba(8,15,22,.55) 0%,rgba(8,15,22,0) 16%,rgba(8,15,22,0) 82%,var(--paper) 100%)}
  .h3d.h3-nogl{background:radial-gradient(38% 34% at 58% 44%,rgba(40,90,160,.32),transparent 70%),linear-gradient(180deg,#0b1621 0%,#08111a 58%,#0a1520 100%)}

  .h3-grid{position:relative;max-width:var(--cw);margin:0 auto;min-height:100vh;min-height:100svh;display:grid;
    grid-template-columns:minmax(0,calc(470*var(--u))) minmax(0,1fr) minmax(0,calc(275*var(--u)));gap:0 clamp(16px,2vw,calc(32*var(--u)));align-items:center;
    padding:calc(var(--hh) + 12*var(--u)) calc(40*var(--u)) calc(80*var(--u))}
  .h3-left{grid-column:1}
  .h3-panel{grid-column:3;justify-self:end;width:100%}
  .h3d .h3-eye{display:flex;align-items:center;gap:calc(14*var(--u));font-size:calc(11*var(--u));line-height:1.4;letter-spacing:.24em;text-transform:uppercase;color:var(--soft);margin:0 0 calc(24*var(--u));max-width:none}
  .h3-eye::before{content:"";flex:none;width:calc(28*var(--u));height:1px;background:var(--orange)}
  .h3d h1.h3-t{margin:0;font:inherit;color:inherit;letter-spacing:normal}
  .h3-t .a{display:block;font-family:var(--font-body);font-weight:400;font-size:clamp(38px,4vw,calc(57*var(--u)));line-height:1.02;letter-spacing:-.04em;color:var(--wh)}
  .h3-t .b{display:block;margin-top:.54em;font-family:var(--font-body);font-weight:400;font-size:clamp(19px,1.8vw,calc(26*var(--u)));line-height:1.2;letter-spacing:-.025em;color:rgba(226,234,242,.56)}
  .h3d .h3-lead{font-size:calc(15*var(--u));line-height:1.66;color:var(--soft);max-width:46ch;margin:calc(22*var(--u)) 0 0}
  .h3-ctas{display:flex;flex-wrap:wrap;align-items:center;gap:calc(28*var(--u));margin-top:calc(24*var(--u))}
  .h3-btn{display:inline-flex;align-items:center;gap:.9em;font-family:var(--font-body);font-weight:600;font-size:calc(11*var(--u));line-height:1.2;letter-spacing:.15em;text-transform:uppercase;
    padding:calc(15*var(--u)) calc(20*var(--u));text-decoration:none;border:1px solid var(--hair);color:var(--wh);background:transparent;cursor:pointer;
    transition:filter .2s ease,color .2s ease,border-color .2s ease}
  .h3-btn i{font-style:normal;font-size:1.18em;letter-spacing:0;transition:transform .2s ease}
  .h3-btn.primary{background:var(--orange);border-color:var(--orange);color:#10161C}
  .h3-btn.primary:hover{filter:brightness(1.08)}
  .h3-btn:hover i{transform:translateX(3px)}
  .h3-btn.link{padding:calc(6*var(--u)) 0;border:0;border-bottom:1px solid var(--hair);color:var(--soft)}
  .h3-btn.link:hover{color:var(--wh);border-color:var(--orange)}
  .h3-btn.link:hover i{transform:translate(2px,-2px)}

  .h3-prog{display:grid;grid-template-columns:calc(118*var(--u)) 1fr;gap:calc(20*var(--u));align-items:center;margin-top:calc(30*var(--u));padding-top:calc(20*var(--u));border-top:1px solid var(--hair)}
  .h3-thumb{width:calc(118*var(--u));height:calc(84*var(--u));border:1px solid var(--hair);display:block;background:#08111a}
  .h3-prog ol{list-style:none;margin:0;padding:0}
  .h3-prog li{display:grid;grid-template-columns:calc(30*var(--u)) 1fr;font-size:calc(13.5*var(--u));line-height:1.5;color:var(--wh);padding:calc(6*var(--u)) 0;border-top:1px solid var(--hair2)}
  .h3-prog li:first-child{border-top:0;padding-top:0}
  .h3-prog li b{font-family:var(--font-mono);font-weight:400;font-size:calc(12*var(--u));color:var(--dim)}
  .h3-nogl .h3-prog{grid-template-columns:1fr}
  .h3-nogl .h3-thumb{display:none}

  /* panneau de graphiques : filets fins, libellés espacés, sans fond */
  .h3-pp{position:relative;height:1px;background:var(--hair)}
  .h3-pp i{position:absolute;left:0;top:0;height:1px;width:0;background:var(--orange)}
  .h3-ph{display:flex;justify-content:space-between;gap:1rem;padding-top:calc(15*var(--u));font-size:calc(11*var(--u));line-height:1.4;letter-spacing:.24em;text-transform:uppercase;color:var(--soft);cursor:pointer;user-select:none}
  .h3-ph b{font-family:var(--font-mono);font-weight:400;letter-spacing:.12em;white-space:nowrap}
  .h3-panel:focus-visible{outline:1px solid var(--hair);outline-offset:8px}
  .h3-pv{margin-top:calc(22*var(--u))}
  .h3-chart{display:block;width:100%;height:calc(178*var(--u))}
  .h3-rule{height:1px;background:var(--hair);margin:calc(20*var(--u)) 0 calc(12*var(--u))}
  .h3d .h3-facts{display:grid;grid-template-columns:1fr 1fr;margin:0;border:1px solid var(--hair)}
  .h3-facts div{padding:calc(11*var(--u)) calc(12*var(--u)) calc(12*var(--u));border-right:1px solid var(--hair);border-bottom:1px solid var(--hair);min-height:calc(64*var(--u));min-width:0}
  .h3-facts div:nth-child(2n){border-right:0}
  .h3-facts div:nth-child(n+3){border-bottom:0}
  .h3-facts dt{font-size:calc(10.5*var(--u));line-height:1.3;letter-spacing:.2em;text-transform:uppercase;color:var(--dim);margin:0 0 calc(9*var(--u))}
  .h3-facts dd{margin:0;font-size:calc(13.5*var(--u));line-height:1.35;color:var(--wh)}
  .h3-facts dd.num{font-family:var(--font-mono);font-size:clamp(11.5px,1.05vw,calc(13*var(--u)));white-space:nowrap}
  .h3d .h3-pf{margin:calc(10*var(--u)) 0 0;font-size:calc(11*var(--u));line-height:1.4;color:var(--dim)}

  .h3-foot{position:absolute;left:max(40px,calc((100% - var(--cw)) / 2 + 40*var(--u)));right:max(40px,calc((100% - var(--cw)) / 2 + 40*var(--u)));bottom:calc(24*var(--u));
    display:flex;justify-content:space-between;align-items:center;font-size:calc(11*var(--u));line-height:1;letter-spacing:.2em;text-transform:uppercase;color:var(--dim)}
  .h3-down{display:inline-flex;align-items:center;gap:.7em;background:none;border:0;padding:calc(6*var(--u)) 0;margin:0;font:inherit;letter-spacing:inherit;text-transform:inherit;color:inherit;cursor:pointer}
  .h3-down:hover{color:var(--wh)}
  .h3-down i{display:inline-block;width:1px;height:calc(18*var(--u));background:linear-gradient(var(--wh),transparent)}
  @media (prefers-reduced-motion:no-preference){
    .h3-down i{animation:h3drip 2.4s ease-in-out infinite;transform-origin:top}
    @keyframes h3drip{0%,100%{transform:scaleY(.45);opacity:.55}50%{transform:scaleY(1);opacity:1}}
  }

  /* en-tête : sur grand écran, même largeur que le hero, mais un agrandissement plus discret */
  @media (min-width:1441px) and (min-height:821px){
    header .wrap.bar{max-width:var(--cw);padding:0 calc(40*var(--u));height:calc(92*var(--uh));gap:calc(22.4*var(--uh))}
    .brand .logo{height:calc(72*var(--uh))}
    nav ul{gap:calc(17.6*var(--uh))}
    nav a{font-size:calc(13.6*var(--uh))}
    #themeBtn{width:calc(34*var(--uh));height:calc(34*var(--uh))}
    #themeBtn svg{width:calc(17*var(--uh));height:calc(17*var(--uh))}
    .tools{gap:calc(8.8*var(--uh))}
    .hd-cta{font-size:calc(12.8*var(--uh));padding:calc(9.9*var(--uh)) calc(14.4*var(--uh))}
  }

  /* en-tête posé sur la scène tant qu'on est en haut de l'accueil */
  html.on-hero header:not(.compact):not(:has(nav.open)){background:transparent;border-bottom-color:transparent;box-shadow:none;
    --logo-main:#F0F6FA;--logo-sub:#9FB2C2;--logo-by:#7C8D9D;--logo-axis:#8FA3B5;
    --muted:#8C9DAD;--head:#F0F6FA;--line:rgba(255,255,255,.2);--orange:#E08A3C}

  /* tablette : la sphère en haut, texte et panneau côte à côte dessous */
  @media (max-width:1180px){
    .h3d{background:var(--paper);min-height:0}
    .h3-stage{inset:0 0 auto 0;height:100vh;height:100svh}
    .h3-stage::after{background:linear-gradient(180deg,rgba(8,15,22,.6) 0%,rgba(8,15,22,0) 13%,rgba(8,15,22,0) 45%,rgba(14,24,33,.55) 52%,rgba(14,24,33,.88) 64%,var(--paper) 90%)}
    .h3-grid{min-height:0;grid-template-columns:minmax(0,1fr) minmax(0,320px);gap:0 48px;align-items:start;padding:51vh 40px 40px;padding-top:51svh}
    .h3-left{max-width:560px}
    .h3-panel{grid-column:2;justify-self:stretch;max-width:none;margin-top:6px}
    .h3-foot{position:static;margin:0 auto;max-width:var(--max);padding:0 40px 40px}
  }
  /* tablette étroite : une seule colonne, panneau à largeur de lecture */
  @media (max-width:900px){
    .h3-grid{display:block}
    .h3-left{max-width:600px}
    .h3-panel{max-width:440px;margin-top:44px}
    .h3-t .a{font-size:clamp(38px,6vw,52px)}
    .h3-t .b{font-size:clamp(19px,2.8vw,24px)}
  }
  /* téléphone */
  @media (max-width:760px){
    .h3-grid{padding-left:20px;padding-right:20px}
    .h3-left{max-width:none}
    .h3d .h3-eye{margin-bottom:16px;font-size:9.5px;letter-spacing:.16em;gap:10px;white-space:nowrap}
    .h3-eye::before{width:16px}
    .h3-t .a{font-size:clamp(34px,10vw,42px)}
    .h3-t .b{font-size:clamp(18px,5vw,21px)}
    .h3d .h3-lead{margin-top:16px}
    .h3-ctas{flex-direction:column;align-items:stretch;gap:14px}
    .h3-btn{justify-content:center;padding:17px 20px}
    .h3-btn.link{align-self:center;padding:8px 0}
    .h3-prog{grid-template-columns:96px 1fr;gap:16px}
    .h3-thumb{width:96px;height:70px}
    .h3-foot{padding:0 20px 36px}
    .h3-down{display:none}
  }
  @media (max-width:400px){
    .h3d .h3-eye{letter-spacing:.13em}
  }
  @media (max-width:350px){
    .h3d .h3-eye{font-size:8.5px;letter-spacing:.1em}
  }

  /* apparition : le texte se pose après la sphère */
  @media (prefers-reduced-motion:no-preference){
    .intro .h3d [data-in]{animation:h3in 1s cubic-bezier(.2,.7,.2,1) both}
    .intro .h3d [data-in="1"]{animation-delay:.95s}.intro .h3d [data-in="2"]{animation-delay:1.06s}
    .intro .h3d [data-in="3"]{animation-delay:1.17s}.intro .h3d [data-in="4"]{animation-delay:1.28s}
    .intro .h3d [data-in="5"]{animation-delay:1.39s}.intro .h3d [data-in="6"]{animation-delay:1.5s}
    .intro .h3d [data-in="7"]{animation-delay:1.61s}
    @keyframes h3in{from{opacity:0;transform:translateY(14px);filter:blur(6px)}to{opacity:1;transform:none;filter:none}}
  }
  @media print{.h3-stage{display:none}.h3d{background:none;color:#000;min-height:0;margin-top:0}}