:root{--bg:#0A0A0A;--s1:#141414;--s2:#1c1c1c;--line:rgba(255,255,255,.08);--fg:#F4F2EE;--mut:#9A9A9A;--soft:#cfcdc8;--red:#F2302E;--w:72rem;
--f:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--ease:cubic-bezier(.32,.72,0,1)}
*{box-sizing:border-box}html{font-size:100%;scroll-behavior:smooth;scroll-padding-top:4.5rem;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:400 1.0625rem/1.5 var(--f);letter-spacing:-.003em;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}
a{color:inherit}button{font:inherit;color:inherit}.wrap{max-width:var(--w);margin:0 auto;padding:0 1.5rem}
.skip{position:absolute;left:-999px;top:.5rem;background:var(--fg);color:var(--bg);padding:.5rem .875rem;border-radius:.5rem;font-weight:600;z-index:99}.skip:focus{left:.5rem}
:focus-visible{outline:2px solid var(--fg);outline-offset:3px;border-radius:.5rem}

/* barre du haut : matière translucide, pas de trait dur ; une ombre fine n'apparaît que quand du contenu passe dessous */
header{position:sticky;top:0;z-index:20;background:rgba(10,10,10,.72);-webkit-backdrop-filter:blur(20px) saturate(180%);backdrop-filter:blur(20px) saturate(180%);transition:box-shadow .3s var(--ease)}
header.sc{box-shadow:0 1px 0 var(--line)}
.nav{display:flex;align-items:center;gap:1.75rem;height:3.75rem}.nav .logo{display:flex;flex:none;padding:.5rem 0}
.nav ul{display:flex;gap:1.75rem;list-style:none;margin:0 0 0 auto;padding:0}.nav ul a{text-decoration:none;color:var(--mut);font-size:.875rem;letter-spacing:.005em;transition:color .2s}
.lang{font-size:.8125rem;font-weight:500;letter-spacing:.02em;color:var(--mut);text-decoration:none;padding:0 .625rem;min-height:2.5rem;display:inline-flex;align-items:center}

/* boutons : retour immédiat à la pression */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;border-radius:999px;padding:0 1.5rem;min-height:3.125rem;font:600 1.0625rem/1 var(--f);letter-spacing:-.01em;text-decoration:none;border:0;cursor:pointer;transition:transform .1s ease-out,background-color .2s,opacity .2s;-webkit-user-select:none;user-select:none}
.btn:active{transform:scale(.97)}
.btn.p{background:var(--red);color:#0A0A0A}.btn.s{background:var(--s2);color:var(--fg)}
.btn.sm{padding:0 1rem;min-height:2.25rem;font-size:.875rem}
.txt{display:inline-flex;align-items:center;min-height:2.75rem;color:var(--mut);font-size:.9375rem;text-decoration:none;transition:color .2s}
.txt b{font-weight:500;color:var(--fg);margin-left:.3em}.txt:active{opacity:.6}
@media(hover:hover){.nav ul a:hover,.lang:hover,.txt:hover{color:var(--fg)}.btn.p:hover{background:#ff4542}.btn.s:hover{background:#262626}footer a:hover{color:var(--fg)}}

/* typo : interlignage et approche qui varient avec la taille */
.kick{margin:0 0 1rem;font-size:.9375rem;font-weight:500;color:var(--mut);letter-spacing:.005em}
h1{margin:0;font:700 clamp(3.25rem,8.5vw,6.5rem)/.98 var(--f);letter-spacing:-.04em}h1 span{display:block}h1 .r{color:var(--red)}
h2{margin:0 0 .75rem;font:700 clamp(2rem,4.2vw,3rem)/1.06 var(--f);letter-spacing:-.028em;max-width:46rem;text-wrap:balance}
h3{margin:0 0 .375rem;font:600 1.25rem/1.25 var(--f);letter-spacing:-.017em}
.lead{color:var(--mut);margin:0;max-width:38rem;font-size:1.0625rem;line-height:1.5}

.hero{padding:4rem 0 5.5rem;overflow:hidden}.hero .wrap{display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:center}
.sub{margin:1.5rem 0 0;font-size:clamp(1.1875rem,2vw,1.375rem);line-height:1.4;letter-spacing:-.012em;color:var(--soft);max-width:30rem}
.ctas{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem 1.25rem;margin-top:2rem}
.proof{margin:1.75rem 0 0;padding:0;list-style:none;display:flex;flex-wrap:wrap;color:var(--mut);font-size:.875rem;letter-spacing:.005em}
.proof li+li:before{content:"·";margin:0 .6em;color:#4a4a4a}
.visual{display:flex;justify-content:center}.tl{width:min(100%,37.5rem);height:auto;display:block}
.tl .wb{transform-box:fill-box;transform-origin:center;fill:var(--red)}.tl .wd .wb{opacity:.24}.tl .wp .wb{opacity:.95}.tl .ph{transform:translateX(294px)}.tl .tc{font-variant-numeric:tabular-nums}
@media(prefers-reduced-motion:no-preference){.tl .wb{animation:tlWv var(--d) ease-in-out var(--dl) infinite alternate}}
@keyframes tlWv{from{transform:scaleY(.45)}to{transform:scaleY(1.15)}}

section{padding:6rem 0}
section h2+.lead{margin-top:.25rem}

.reels{display:grid;grid-template-columns:repeat(3,minmax(0,18.75rem));gap:1.5rem;margin-top:2.5rem}
.rf{position:relative;aspect-ratio:9/16;border-radius:1.25rem;overflow:hidden;background:var(--s1)}
.rf video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:opacity .25s}
.rc .vb{opacity:0}.rc.b .vb{opacity:1}.rc.b .va{opacity:0}
.rf.ph0{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.75rem;color:#5e5e5e;font-size:.875rem}
.snd{position:absolute;right:.75rem;top:.75rem;width:2.5rem;height:2.5rem;border-radius:50%;border:0;background:rgba(20,20,20,.55);color:var(--fg);display:flex;align-items:center;justify-content:center;cursor:pointer;-webkit-backdrop-filter:blur(16px) saturate(180%);backdrop-filter:blur(16px) saturate(180%);transition:transform .1s ease-out}
.snd:active{transform:scale(.92)}
.snd .w{display:none}.rc.on .snd .w{display:inline}.rc.on .snd .x{display:none}
.rm{display:flex;align-items:center;justify-content:space-between;gap:.75rem;margin-top:.875rem}
.rm b{display:block;font-weight:600;font-size:1rem;letter-spacing:-.01em}.rm span{color:var(--mut);font-size:.875rem}
.seg{display:inline-flex;background:var(--s2);border-radius:999px;padding:.1875rem;flex:none}
.seg button{font-size:.8125rem;font-weight:500;color:var(--mut);background:none;border:0;border-radius:999px;padding:0 .8rem;min-height:2.125rem;cursor:pointer;transition:background-color .25s var(--ease),color .25s}
.seg button[aria-pressed=true]{background:var(--fg);color:var(--bg)}.seg button:disabled{cursor:default;opacity:.5}

.tms{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:2.5rem}
.tm{margin:0;background:var(--s1);border-radius:1.25rem;padding:1.75rem;display:flex;flex-direction:column;justify-content:space-between;gap:1.5rem}
.tm blockquote{margin:0;font-size:1.1875rem;line-height:1.45;letter-spacing:-.012em;color:var(--fg)}
.tm figcaption b{display:block;font-weight:600;font-size:.9375rem}.tm figcaption span{color:var(--mut);font-size:.875rem}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:2.75rem}
.step{background:var(--s1);border-radius:1.25rem;padding:1.75rem}
.step b{display:block;font-weight:500;font-size:.875rem;color:var(--mut);font-variant-numeric:tabular-nums;margin-bottom:2.5rem}
.step p{margin:0;color:var(--mut);font-size:1rem}

.formats{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-top:2.75rem}
.fm{background:var(--s1);border-radius:1.25rem;padding:1.75rem;display:flex;flex-direction:column;gap:.25rem;min-height:12rem}
.fm.core{background:var(--red);color:#0A0A0A}.fm.core p{color:rgba(10,10,10,.78)}
.fm p{margin:0;color:var(--mut);font-size:1rem}
.tag{font-size:.8125rem;font-weight:500;margin-bottom:auto;padding-bottom:1.5rem;color:var(--mut)}.fm.core .tag{color:rgba(10,10,10,.7)}

.split{display:grid;grid-template-columns:1.1fr 1fr;gap:3.5rem;align-items:center}
.box{background:var(--s1);border-radius:1.25rem;padding:2rem}
.rhythm{display:flex;gap:.5rem;flex-wrap:wrap;margin:0 0 1.25rem;padding:0;list-style:none}.rhythm li{background:var(--s2);border-radius:999px;padding:.4rem .85rem;font-size:.875rem;color:var(--soft)}
.box .lead{margin-bottom:1.5rem}
.big{font-size:clamp(1.25rem,2.2vw,1.5rem);line-height:1.42;letter-spacing:-.015em;color:var(--soft);margin:0}

.faq{margin-top:1.75rem}details{border-bottom:1px solid var(--line)}details:first-child{border-top:1px solid var(--line)}
summary{cursor:pointer;padding:1.125rem 0;min-height:3.5rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;font-weight:600;font-size:1.125rem;line-height:1.3;letter-spacing:-.014em;list-style:none;transition:opacity .15s}
summary:active{opacity:.6}summary::-webkit-details-marker{display:none}
summary:after{content:"";width:.5rem;height:.5rem;border-right:1.75px solid var(--mut);border-bottom:1.75px solid var(--mut);transform:translateY(-25%) rotate(45deg);flex:none;margin-right:.25rem;transition:transform .35s var(--ease)}
details[open] summary:after{transform:translateY(15%) rotate(-135deg)}
details p{margin:0 0 1.375rem;color:var(--mut);max-width:44rem}

.final{text-align:center;padding:7rem 0}.final h2{margin:0 auto .75rem;max-width:50rem}.final .lead{margin:0 auto}.final .ctas{justify-content:center}
.final .mark{margin:0 auto 1.75rem;display:flex;justify-content:center}.final .alt{margin-top:.5rem}

footer{padding:2.75rem 0 3.5rem;color:var(--mut);font-size:.875rem;box-shadow:0 -1px 0 var(--line)}
.fgrid{display:flex;flex-wrap:wrap;gap:1.75rem 3.5rem;justify-content:space-between;align-items:flex-start}
footer ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}footer a{text-decoration:none;display:inline-block;padding:.6rem 0;transition:color .2s}
footer .t{margin:.625rem 0 0}.copy{margin-top:1.75rem;font-size:.8125rem}

.doc{padding:4.5rem 0 6rem}.doc .wrap{max-width:46rem}.doc h1{font-size:clamp(2.5rem,6vw,3.75rem);letter-spacing:-.035em;margin-bottom:1.75rem}
.doc h2{font-size:1.375rem;margin:2.25rem 0 .625rem;letter-spacing:-.018em}.doc p,.doc li{color:var(--soft)}.doc ul{padding-left:1.375rem}.doc a{color:var(--fg)}
.doc .upd{color:var(--mut);font-size:.9375rem;margin-top:-1rem}.doc strong{color:var(--fg);font-weight:600}.ph{background:#5a1d1d;color:#ffb4b2;border-radius:.25rem;padding:0 .25rem}
.todo{background:#2a0e0e;border-radius:.75rem;padding:.875rem 1.125rem;color:#ffb4b2;margin-bottom:1.75rem;font-size:.9375rem}

/* barre d'action mobile : même matière que l'en-tête, arrive par le bas et repart par le bas */
.sticky{display:none}
@media(max-width:900px){
.nav{gap:.5rem}.nav ul{display:none}.nav .spacer{margin-left:auto}
.hero{padding:2rem 0 3.5rem}.hero .wrap{grid-template-columns:1fr;gap:2.5rem}
section{padding:4rem 0}.final{padding:4.5rem 0}
.reels{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:.875rem;margin:1.75rem -1.5rem 0;padding:0 1.5rem .5rem;scroll-padding:0 1.5rem;scrollbar-width:none;overscroll-behavior-x:contain}.reels::-webkit-scrollbar{display:none}
.rc{flex:0 0 72%;scroll-snap-align:start}
.tms,.steps,.formats{grid-template-columns:1fr;gap:.75rem;margin-top:1.75rem}
.step,.fm,.tm{padding:1.5rem}.step b{margin-bottom:1.25rem}.fm{min-height:0}.tag{padding-bottom:.75rem}
.split{grid-template-columns:1fr;gap:1.5rem}.box{padding:1.5rem}
.fgrid{flex-direction:column;gap:1rem}footer{padding:2.25rem 0 6.5rem}
.sticky{display:block;position:fixed;left:0;right:0;bottom:0;z-index:30;padding:.625rem 1rem calc(.625rem + env(safe-area-inset-bottom));background:rgba(10,10,10,.72);-webkit-backdrop-filter:blur(20px) saturate(180%);backdrop-filter:blur(20px) saturate(180%);box-shadow:0 -1px 0 var(--line);transform:translateY(105%);transition:transform .45s var(--ease)}
.sticky.on{transform:none}.sticky .btn{width:100%}}
@media(max-width:480px){.ctas{flex-direction:column;align-items:stretch}.ctas .btn{width:100%}.ctas .txt{justify-content:center}.proof{gap:.35rem 1.1rem}.proof li+li:before{content:none}summary{font-size:1.0625rem}h1{font-size:clamp(3rem,15.5vw,4rem)}}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.sticky{transition:opacity .2s;transform:none;opacity:0;pointer-events:none}.sticky.on{opacity:1;pointer-events:auto}.btn:active,.snd:active{transform:none}summary:after{transition:none}}
@media(prefers-reduced-transparency:reduce){header,.sticky{background:#0A0A0A;-webkit-backdrop-filter:none;backdrop-filter:none}.snd{background:#1c1c1c}}
@media(prefers-contrast:more){:root{--mut:#c4c4c4;--line:rgba(255,255,255,.3)}.step,.fm,.box,.tm{box-shadow:inset 0 0 0 1px var(--line)}}