:root{
    --ink:#0a0a0a;
    --ink-2:#141414;
    --paper:#ffffff;
    --paper-2:#f6f5f2;
    --text:#111110;
    --muted:#6c6a66;
    --muted-d:#9b9994;
    --line-l:rgba(10,10,10,.12);
    --line-d:rgba(255,255,255,.14);
    --silver:linear-gradient(155deg,#d8d6d1 0%,#fbfaf7 38%,#bdbbb5 62%,#efeee9 100%);
    --graphite:linear-gradient(135deg,#5a5a58 0%,#0d0d0c 46%,#3c3c3a 64%,#0a0a0a 100%);
    --maxw:1240px;
    --ease:cubic-bezier(.16,1,.3,1);
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{background:var(--paper);color:var(--text);font-family:'Inter',system-ui,sans-serif;
    line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
  body.locked{overflow:hidden;height:100vh}
  ::selection{background:var(--ink);color:#fff}
  a{color:inherit;text-decoration:none}
  img,svg{display:block;max-width:100%}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}
  .serif{font-family:'Fraunces',Georgia,serif}
  em{font-style:italic}

  /* logo as image, inverts on dark backgrounds */
  .logo{display:inline-block;object-fit:contain;filter:none;transition:filter .4s}
  html[data-theme="night"] header.nav:not(.scrolled) .brand .logo{filter:invert(1)}
  footer .foot-brand .logo{filter:invert(1)}

  /* logo statique dans l'en-tête */
  .nav-ak{height:28px;width:auto;display:block;flex:none}
  .nav-ak .napath{fill:currentColor}
  /* ===== AK central qui se dessine, lent et épuré ===== */
  .ak-hero{width:128px;height:auto;margin:0 auto 36px;display:block}
  .ak-hero .hpath{fill:var(--ink);fill-opacity:0;stroke:var(--ink);stroke-width:6;
    stroke-linejoin:round;stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1;
    animation:akDraw 4.2s cubic-bezier(.5,0,.2,1) .5s forwards, akFill 1.4s ease 3.8s forwards}
  html[data-theme="night"] .ak-hero .hpath{fill:#f4f1ea;stroke:#f4f1ea}
  @keyframes akDraw{to{stroke-dashoffset:0}}
  @keyframes akFill{to{fill-opacity:1}}
  @keyframes fadeUp{to{opacity:1}}

  /* ===== NAV ===== */
  header.nav{position:fixed;top:0;left:0;right:0;z-index:80;padding:22px 0;
    transition:padding .4s var(--ease),background .4s,backdrop-filter .4s,border-color .4s,box-shadow .4s;
    border-bottom:1px solid transparent}
  header.nav.scrolled{padding:13px 0;background:rgba(255,255,255,.82);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line-l);box-shadow:0 10px 40px -30px rgba(0,0,0,.4)}
  .nav-inner{display:flex;align-items:center;justify-content:space-between}
  .brand{display:flex;align-items:center;gap:12px;color:#fff;transition:color .4s}
  header.nav.scrolled .brand{color:var(--ink)}
  .brand .logo{height:32px;width:52px}
  .brand .name{font-family:'Fraunces',serif;font-weight:500;font-size:18px;letter-spacing:.04em;color:inherit}
  .brand .name span{color:currentColor;opacity:.55;font-weight:400}
  .nav-links{display:flex;align-items:center;gap:36px}
  .nav-links a{font-size:14px;color:#fff;opacity:.82;position:relative;transition:opacity .3s,color .4s}
  header.nav.scrolled .nav-links a{color:var(--text)}
  .nav-links a:not(.btn)::after{content:"";position:absolute;left:0;bottom:-5px;height:1px;width:0;background:currentColor;transition:width .35s var(--ease)}
  .nav-links a:not(.btn):hover{opacity:1}
  .nav-links a:not(.btn):hover::after{width:100%}
  .btn{display:inline-flex;align-items:center;gap:9px;padding:12px 22px;border-radius:100px;
    font-size:14px;font-weight:500;cursor:pointer;background:var(--ink);color:#fff;border:1px solid var(--ink);
    transition:transform .4s var(--ease),background .3s,box-shadow .4s,color .3s,border-color .3s;white-space:nowrap}
  .btn:hover{transform:translateY(-2px);box-shadow:0 14px 32px -12px rgba(10,10,10,.5)}
  .btn.ghost{background:transparent;color:var(--ink);border-color:var(--line-l)}
  .btn.ghost:hover{border-color:var(--ink);box-shadow:none}
  .btn.inv{background:#fff;color:var(--ink);border-color:#fff}
  .btn.inv:hover{box-shadow:0 14px 32px -12px rgba(255,255,255,.35)}
  .btn .arr{transition:transform .4s var(--ease)}
  .btn:hover .arr{transform:translateX(4px)}
  /* nav CTA adapts to scroll state */
  .nav-links a.btn{background:#fff;color:var(--ink);border-color:#fff;opacity:1}
  header.nav.scrolled .nav-links a.btn{background:var(--ink);color:#fff;border-color:var(--ink)}
  .menu-toggle{display:none;position:relative;z-index:5;width:40px;height:40px;background:none;border:0;cursor:pointer;
    padding:0;color:#fff;transition:color .4s}
  header.nav.scrolled .menu-toggle{color:var(--ink)}
  .menu-toggle span{position:absolute;left:8px;top:19px;width:24px;height:2px;background:currentColor;
    transition:transform .3s var(--ease),opacity .25s}
  .menu-toggle span:nth-child(1){transform:translateY(-7px)}
  .menu-toggle span:nth-child(3){transform:translateY(7px)}
  .menu-toggle.is-open{color:var(--ink)}
  .menu-toggle.is-open span:nth-child(1){transform:rotate(45deg)}
  .menu-toggle.is-open span:nth-child(2){opacity:0}
  .menu-toggle.is-open span:nth-child(3){transform:rotate(-45deg)}
  .nav-backdrop{position:fixed;inset:0;z-index:70;background:rgba(8,8,8,.45);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);opacity:0;visibility:hidden;transition:opacity .4s var(--ease),visibility .4s}
  .nav-backdrop.open{opacity:1;visibility:visible}
  body.menu-open{overflow:hidden}

  /* dark section helpers */
  .dark{background:var(--ink);color:var(--paper)}
  .dark .label{color:#fff}
  .dark .label::before{background:#fff}
  .dark h2.sec-title{color:var(--paper)}
  .dark .sec-head p{color:var(--muted-d)}

  /* ===== HERO (dark cinematic) ===== */
  .hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;
    background:#070707;color:#fff;padding:170px 0 120px}
  .hero-media{position:absolute;inset:0;z-index:0}
  .hero-img{position:absolute;inset:0;background:#000 center/cover no-repeat;
    background-image:url(assets/abstract-hero.webp);filter:grayscale(1) contrast(1.06) brightness(.72);
    transform:scale(1.14);animation:kenburns 11s ease-in-out infinite alternate}
  @keyframes kenburns{0%{transform:scale(1.1) translate(5%,3%)}100%{transform:scale(1.3) translate(-7%,-5%)}}
  .hero-veil{position:absolute;inset:0;
    background:radial-gradient(110% 80% at 50% 50%,rgba(6,6,6,.42),rgba(6,6,6,.78) 100%)}
  .hero-veil2{position:absolute;inset:0;
    background:linear-gradient(to bottom,rgba(5,5,5,.72),rgba(5,5,5,.3) 26%,rgba(5,5,5,.34) 64%,rgba(5,5,5,.85))}
  .hero-grain{position:absolute;inset:0;opacity:.07;mix-blend-mode:overlay;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
  .hero-content{position:relative;z-index:2;width:100%;max-width:800px;margin:0 auto;text-align:center;
    display:flex;flex-direction:column;align-items:center}
  .eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.18em;
    text-transform:uppercase;color:rgba(255,255,255,.72);margin-bottom:26px;font-weight:500}
  .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:#fff;box-shadow:0 0 12px rgba(255,255,255,.8)}
  h1.hero-title{font-family:'Fraunces',serif;font-weight:300;font-size:clamp(44px,6.4vw,94px);
    line-height:.98;letter-spacing:-.02em;color:#fff}
  h1.hero-title em{font-style:italic;background:var(--silver);-webkit-background-clip:text;
    background-clip:text;color:transparent}
  .hero-sub{margin:28px auto 0;font-size:clamp(16px,1.4vw,19px);color:rgba(255,255,255,.74);max-width:56ch;font-weight:300}
  .hero-cta{margin-top:40px;display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
  .hero-meta{margin-top:54px;display:flex;gap:48px;flex-wrap:wrap;justify-content:center}
  .hero-meta .m-num{font-family:'Fraunces',serif;font-size:36px;font-weight:400;line-height:1;color:#fff}
  .hero-meta .m-lab{font-size:12.5px;color:rgba(255,255,255,.55);letter-spacing:.03em;margin-top:7px}
  .scroll-ind{position:absolute;left:50%;bottom:34px;transform:translateX(-50%);z-index:2;
    display:flex;flex-direction:column;align-items:center;gap:10px;color:rgba(255,255,255,.6);
    font-size:11px;letter-spacing:.2em;text-transform:uppercase}
  .scroll-ind .rail{width:1px;height:46px;background:rgba(255,255,255,.25);position:relative;overflow:hidden}
  .scroll-ind .rail::after{content:"";position:absolute;left:0;top:0;width:100%;height:40%;
    background:#fff;animation:scrolldot 2.1s var(--ease) infinite}
  @keyframes scrolldot{0%{transform:translateY(-100%)}60%,100%{transform:translateY(260%)}}

  /* hero entrance */
  .h-anim{opacity:0;transform:translateY(42px);transition:opacity 1.1s var(--ease),transform 1.1s var(--ease)}
  body.ready .h-anim{opacity:1;transform:none}
  body.ready .hero-content .h-anim:nth-child(2){transition-delay:.05s}
  body.ready .hero-content .h-anim:nth-child(3){transition-delay:.16s}
  body.ready .hero-content .h-anim:nth-child(4){transition-delay:.28s}
  body.ready .hero-content .h-anim:nth-child(5){transition-delay:.40s}
  body.ready .hero-content .h-anim:nth-child(6){transition-delay:.52s}
  .scroll-ind.h-anim{transition-delay:.8s}


  /* ===== MANIFESTO BAND ===== */
  .manifesto{position:relative;overflow:hidden;background:var(--ink);
    padding:clamp(120px,18vh,200px) 0;isolation:isolate}
  .manifesto .mani-bg{position:absolute;inset:0;z-index:-2;
    background:#000 center/cover no-repeat;
    background-image:url(assets/abstract-hero.webp);
    transform:scale(1.08);filter:grayscale(1) contrast(1.05)}
  .manifesto::after{content:"";position:absolute;inset:0;z-index:-1;
    background:linear-gradient(90deg,rgba(8,8,8,.94),rgba(8,8,8,.62) 55%,rgba(8,8,8,.4))}
  .mani-inner{max-width:900px}
  .mani-kicker{font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;color:#fff;
    opacity:.7;margin-bottom:26px;font-weight:500}
  .mani-quote{font-family:'Fraunces',serif;font-weight:300;color:#fff;
    font-size:clamp(28px,3.7vw,50px);line-height:1.18;letter-spacing:-.01em}
  .mani-quote em{font-style:italic}

  /* ===== SECTIONS ===== */
  section{position:relative}
  .sec{padding:120px 0}
  .sec-head{max-width:760px;margin-bottom:64px}
  .label{font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
    display:flex;align-items:center;gap:12px;margin-bottom:22px;font-weight:500}
  .label::before{content:"";width:30px;height:1px;background:var(--ink)}
  h2.sec-title{font-family:'Fraunces',serif;font-weight:300;font-size:clamp(34px,4.4vw,58px);
    line-height:1.04;letter-spacing:-.015em;color:var(--ink)}
  .sec-head p{margin-top:22px;color:var(--muted);font-size:17px;font-weight:300;max-width:60ch}

  /* services */
  .services{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line-l);
    border:1px solid var(--line-l);border-radius:18px;overflow:hidden}
  .svc{background:var(--paper);padding:46px 40px;transition:background .5s var(--ease);position:relative}
  .svc:hover{background:var(--paper-2)}
  .svc-num{font-family:'Fraunces',serif;font-size:14px;font-weight:500;color:var(--muted)}
  .svc h3{font-family:'Fraunces',serif;font-weight:400;font-size:27px;margin:18px 0 14px;letter-spacing:-.01em;color:var(--ink)}
  .svc p{color:var(--muted);font-size:15.5px;font-weight:300}
  .svc .svc-ico{position:absolute;top:42px;right:40px;color:var(--ink);transition:transform .4s var(--ease)}
  .svc:hover .svc-ico{transform:rotate(-10deg) scale(1.12)}

  /* work : carrousel coverflow épuré */
  .flow{position:relative;height:clamp(390px,53vw,640px);perspective:2400px;margin-top:8px}
  .flow-stage{position:absolute;inset:0;transform-style:preserve-3d;animation:floatStage 7s ease-in-out infinite}
  @keyframes floatStage{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
  .flow-card{position:absolute;top:50%;left:50%;width:min(56%,620px);aspect-ratio:16/10.4;
    border-radius:14px;overflow:hidden;border:1px solid var(--line-d);background:#0d0d0c;
    box-shadow:0 50px 90px -50px rgba(0,0,0,.9);backface-visibility:hidden;cursor:pointer;
    transition:transform 1.15s cubic-bezier(.25,.8,.3,1),opacity .9s ease,box-shadow .9s,filter .9s;will-change:transform,opacity}
  .flow-card>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:top center}
  .flow-card .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--muted-d);font-size:13px;letter-spacing:.04em}
  .flow-card .veil{position:absolute;inset:0;background:linear-gradient(to top,rgba(8,8,8,.6),transparent 56%);opacity:0;transition:opacity .6s}
  .flow-card.active .veil{opacity:0}
  .flow-card .cname{display:none}
  .flow-card .fdemo{position:absolute;top:14px;left:14px;z-index:3;font-size:11px;letter-spacing:.16em;text-transform:uppercase;padding:5px 11px;border-radius:999px;background:rgba(10,10,10,.5);color:#fff;-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);border:1px solid rgba(255,255,255,.28);opacity:0;transition:opacity .5s}
  .flow-card.active .fdemo{opacity:1}
  
  .flow-card:not(.active){filter:grayscale(.06) brightness(.92)}
  .flow-card.active{border-color:rgba(255,255,255,.28)}
  .flow-bar{display:flex;align-items:center;justify-content:center;gap:30px;margin-top:38px}
  .flow-arrow{width:50px;height:50px;border-radius:50%;border:1px solid var(--line-d);background:transparent;
    color:var(--paper);cursor:pointer;font-size:17px;display:inline-flex;align-items:center;justify-content:center;flex:none;
    transition:background .35s var(--ease),color .35s,border-color .35s,transform .35s}
  .flow-arrow:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);transform:translateY(-2px)}
  .flow-info{text-align:center;min-width:250px}
  .flow-info .fcount{font-family:'Fraunces',serif;font-style:italic;font-size:14px;color:var(--muted-d)}
  .flow-info h3{font-family:'Fraunces',serif;font-weight:400;font-size:clamp(22px,2.6vw,30px);color:#fff;margin:6px 0 5px;letter-spacing:-.01em}
  .flow-info .ftag{font-size:13px;color:var(--muted-d);letter-spacing:.02em}
  .flow-visit{display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-size:13.5px;color:var(--paper);
    border-bottom:1px solid rgba(255,255,255,.3);padding-bottom:3px;transition:border-color .3s,gap .3s}
  .flow-visit:hover{border-color:#fff;gap:12px}
  .flow-dots{display:flex;justify-content:center;gap:10px;margin-top:28px}
  .flow-dot{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.24);border:0;cursor:pointer;padding:0;
    transition:width .35s var(--ease),background .35s,border-radius .35s}
  .flow-dot.active{background:#fff;width:24px;border-radius:4px}
  .flow-dot:hover{background:rgba(255,255,255,.55)}

  /* method */
  .method{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
  .step{padding:40px 30px 40px 0;border-top:1px solid var(--line-l);position:relative}
  .step::before{content:"";position:absolute;top:-1px;left:0;width:0;height:1px;background:var(--ink);transition:width 1s var(--ease)}
  .step.in::before{width:100%}
  .step .s-num{font-family:'Fraunces',serif;font-size:13px;font-weight:500;color:var(--muted);letter-spacing:.08em}
  .step h3{font-family:'Fraunces',serif;font-weight:400;font-size:22px;margin:20px 0 12px;color:var(--ink)}
  .step p{color:var(--muted);font-size:14.5px;font-weight:300}

  /* why (dark split) */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
  .why-list{margin-top:36px;display:flex;flex-direction:column}
  .why-item{padding:24px 0;border-top:1px solid var(--line-d);display:flex;gap:20px;align-items:flex-start}
  .why-item:last-child{border-bottom:1px solid var(--line-d)}
  .why-item .chk{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:#fff;color:var(--ink);
    display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-top:2px}
  .why-item h4{font-family:'Fraunces',serif;font-weight:500;font-size:18px;margin-bottom:5px;color:var(--paper)}
  .why-item p{color:var(--muted-d);font-size:14.5px;font-weight:300}
  .why-visual{aspect-ratio:4/5;border-radius:20px;border:1px solid var(--line-d);position:relative;
    overflow:hidden;background:#0c0c0c center/cover no-repeat;
    background-image:url(assets/abstract-vert.webp)}
  .why-visual::before{content:"";position:absolute;inset:0;z-index:1;
    background:linear-gradient(to top,rgba(8,8,8,.92),rgba(8,8,8,.5) 45%,rgba(8,8,8,.15))}
  .why-visual .qmark{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;
    justify-content:flex-end;padding:44px}
  .why-visual blockquote{font-family:'Fraunces',serif;font-weight:300;font-style:italic;
    font-size:clamp(22px,2.6vw,30px);line-height:1.3;color:var(--paper)}
  .why-visual cite{display:block;margin-top:26px;font-style:normal;font-size:14px;color:#e9e8e4}
  .why-visual cite span{display:block;color:var(--muted-d);font-size:13px;margin-top:3px}
  .why-visual .big-ak{position:absolute;bottom:-46px;right:-34px;width:240px;height:147px;color:#fff;opacity:.06}

  /* pricing */
  .pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .plan{border:1px solid var(--line-l);border-radius:20px;padding:40px 34px;background:var(--paper);
    position:relative;transition:transform .5s var(--ease),box-shadow .5s,border-color .4s}
  .plan:hover{transform:translateY(-6px);box-shadow:0 36px 70px -46px rgba(0,0,0,.4)}
  .plan.feat{border-color:var(--ink);background:var(--ink);color:var(--paper)}
  .plan.feat h3,.plan.feat .price{color:var(--paper)}
  .plan.feat .p-desc,.plan.feat .from{color:var(--muted-d)}
  .plan.feat li{color:#e9e8e4}
  .plan.feat li::before{color:#fff}
  .plan .badge{position:absolute;top:22px;right:22px;font-size:11px;letter-spacing:.1em;text-transform:uppercase;
    color:var(--ink);background:#fff;padding:5px 12px;border-radius:100px;font-weight:600}
  .plan h3{font-family:'Fraunces',serif;font-weight:400;font-size:22px;margin-bottom:6px;color:var(--ink)}
  .plan .p-desc{color:var(--muted);font-size:14px;font-weight:300;min-height:40px}
  .plan .price{font-family:'Fraunces',serif;font-weight:300;font-size:46px;margin:18px 0 4px;letter-spacing:-.02em;color:var(--ink)}
  .plan .from{font-size:12.5px;color:var(--muted);margin-bottom:26px}
  .plan ul{list-style:none;display:flex;flex-direction:column;gap:13px;margin-bottom:32px}
  .plan li{font-size:14.5px;color:var(--text);font-weight:300;display:flex;gap:11px;align-items:flex-start}
  .plan li::before{content:"+";font-weight:600;color:var(--ink);margin-top:1px}
  .plan .btn{width:100%;justify-content:center}

  /* CTA (dark) */
  .cta{text-align:center;padding:130px 0;background:var(--ink)}
  .cta-card{position:relative;border:1px solid var(--line-d);border-radius:28px;padding:84px 40px;
    overflow:hidden;background:linear-gradient(165deg,#1a1a1a,#0b0b0b)}
  .cta h2{font-family:'Fraunces',serif;font-weight:300;font-size:clamp(36px,5vw,68px);line-height:1.02;
    letter-spacing:-.02em;position:relative;color:var(--paper)}
  .cta p{margin:24px auto 0;color:var(--muted-d);max-width:50ch;font-size:17px;font-weight:300;position:relative}
  .cta .hero-cta{justify-content:center;position:relative}

  /* footer (dark) */
  footer{background:var(--ink);border-top:1px solid var(--line-d);padding:64px 0 40px;color:var(--paper)}
  .foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:54px}
  .foot-brand .logo{height:42px;width:68px;color:#fff;margin-bottom:22px}
  .foot-brand p{color:var(--muted-d);font-size:14.5px;font-weight:300;max-width:34ch}
  .foot-col h5{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-d);margin-bottom:20px}
  .foot-col a{display:block;color:var(--paper);font-size:15px;margin-bottom:13px;transition:opacity .3s;opacity:.82}
  .foot-col a:hover{opacity:1}
  .foot-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line-d);
    padding-top:28px;font-size:13.5px;color:var(--muted-d);flex-wrap:wrap;gap:14px}
  .admin-link{display:inline-flex;align-items:center;gap:7px;color:var(--muted-d);font-size:13px;
    opacity:.6;letter-spacing:.02em;transition:opacity .3s,color .3s}
  .admin-link:hover{opacity:1;color:var(--paper)}

  /* nav right cluster + theme toggle */
  .nav-right{display:flex;align-items:center;gap:24px}
  .theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
    border-radius:50%;border:1px solid currentColor;background:transparent;color:#fff;cursor:pointer;
    opacity:.85;transition:transform .5s var(--ease),opacity .3s,color .4s,background .3s}
  header.nav.scrolled .theme-toggle{color:var(--ink)}
  .theme-toggle:hover{opacity:1;transform:rotate(18deg)}
  .theme-toggle .ic{position:relative}
  .theme-toggle .moon{display:none}
  html[data-theme="day"] .theme-toggle .sun{display:none}
  html[data-theme="day"] .theme-toggle .moon{display:block}
  .btn.ghost.hero-ghost{color:#fff;border-color:rgba(255,255,255,.34)}
  .btn.ghost.hero-ghost:hover{border-color:#fff}

  /* ===== DAY THEME ===== */
  html[data-theme="day"] .hero{background:#f1efe9;color:var(--ink)}
  html[data-theme="day"] .hero-img{background-image:url(assets/obsidian-white.webp);
    filter:grayscale(1) contrast(1.02) brightness(1.02)}
  html[data-theme="day"] .hero-veil{
    background:radial-gradient(110% 80% at 50% 50%,rgba(244,242,236,.46),rgba(244,242,236,.8) 100%)}
  html[data-theme="day"] .hero-veil2{
    background:linear-gradient(to bottom,rgba(244,242,236,.78),rgba(244,242,236,.32) 26%,rgba(244,242,236,.36) 64%,rgba(244,242,236,.92))}
  html[data-theme="day"] .hero-grain{mix-blend-mode:multiply;opacity:.05}
  html[data-theme="day"] .eyebrow{color:var(--muted)}
  html[data-theme="day"] .eyebrow .dot{background:var(--ink);box-shadow:none}
  html[data-theme="day"] h1.hero-title{color:var(--ink)}
  html[data-theme="day"] h1.hero-title em{background:var(--graphite);-webkit-background-clip:text;background-clip:text;color:transparent}
  html[data-theme="day"] .hero-sub{color:var(--muted)}
  html[data-theme="day"] .hero-meta .m-num{color:var(--ink)}
  html[data-theme="day"] .hero-meta .m-lab{color:var(--muted)}
  html[data-theme="day"] .btn.ghost.hero-ghost{color:var(--ink);border-color:var(--line-l)}
  html[data-theme="day"] .btn.ghost.hero-ghost:hover{border-color:var(--ink)}
  html[data-theme="day"] .scroll-ind{color:var(--muted)}
  html[data-theme="day"] .scroll-ind .rail{background:rgba(10,10,10,.2)}
  html[data-theme="day"] .scroll-ind .rail::after{background:var(--ink)}
  /* nav over light hero (top, not scrolled) → dark */
  html[data-theme="day"] .brand{color:var(--ink)}
  html[data-theme="day"] .nav-links a{color:var(--text)}
  html[data-theme="day"] .nav-links a.btn{background:var(--ink);color:#fff;border-color:var(--ink)}
  html[data-theme="day"] .menu-toggle{color:var(--ink)}
  html[data-theme="day"] .theme-toggle{color:var(--ink)}

  /* reveal */
  .reveal{opacity:0;transform:translateY(34px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
  .reveal.in{opacity:1;transform:none}
  .reveal[data-d="1"]{transition-delay:.08s}
  .reveal[data-d="2"]{transition-delay:.16s}
  .reveal[data-d="3"]{transition-delay:.24s}

  @media(max-width:1000px){
    .nav-ak{height:25px;width:auto}
    .ak-hero{width:82px;margin-bottom:24px}
    .split{grid-template-columns:1fr;gap:46px}
    .method{grid-template-columns:repeat(2,1fr)}
    .step{padding-right:24px}
  }
  @media(max-width:1024px){
    .wrap{padding:0 22px}
    .nav-links{position:fixed;top:0;right:0;bottom:auto;width:82%;max-width:360px;height:100vh;height:100dvh;
      background:var(--paper);z-index:4;flex-direction:column;justify-content:flex-start;align-items:flex-start;
      gap:24px;padding:92px 34px 36px;overflow-y:auto;overscroll-behavior:contain;
      transform:translateX(100%);transition:transform .5s var(--ease);border-left:1px solid var(--line-l)}
    .nav-links.open{transform:none;box-shadow:-28px 0 70px -44px rgba(0,0,0,.65)}
    .nav-links a{font-size:20px;color:var(--ink);opacity:.9}
    .nav-links a.btn{background:var(--ink);color:#fff;border-color:var(--ink)}
    .menu-toggle{display:flex}
    .sec{padding:84px 0}
    .services,.pricing{grid-template-columns:1fr}
    .flow{height:clamp(270px,70vw,440px)}
    .flow-card{width:min(84%,480px)}
    .flow-bar{gap:16px}
    .flow-info{min-width:170px}
    .method{grid-template-columns:1fr}
    .hero-meta{gap:30px}
    .cta-card{padding:60px 26px}
    .foot-grid{grid-template-columns:1fr;gap:36px}
  }


  /* ============ PAGES INTERNES ============ */
  .phero{position:relative;min-height:52vh;display:flex;align-items:flex-end;overflow:hidden;
    background:#070707;color:#fff;padding:170px 0 58px}
  .phero .pwrap{position:relative;z-index:2;width:100%;max-width:900px}
  .crumb{display:flex;gap:9px;align-items:center;font-size:12.5px;letter-spacing:.02em;color:rgba(255,255,255,.6);margin-bottom:20px}
  .crumb a{color:rgba(255,255,255,.6);transition:color .3s}
  .crumb a:hover{color:#fff}
  .crumb span{opacity:.45}
  html[data-theme="day"] .crumb{color:var(--muted)}
  html[data-theme="day"] .crumb a{color:var(--muted)}
  html[data-theme="day"] .crumb a:hover{color:var(--ink)}
  .phero h1{font-family:'Fraunces',serif;font-weight:300;font-size:clamp(34px,5vw,66px);line-height:1.02;letter-spacing:-.02em;color:#fff}
  .phero h1 em{font-style:italic;background:var(--silver);-webkit-background-clip:text;background-clip:text;color:transparent}
  html[data-theme="day"] .phero h1{color:var(--ink)}
  html[data-theme="day"] .phero h1 em{background:var(--graphite);-webkit-background-clip:text;background-clip:text;color:transparent}
  .phero .lead{margin-top:20px;font-size:clamp(16px,1.4vw,19px);color:rgba(255,255,255,.74);max-width:62ch;font-weight:300}
  html[data-theme="day"] .phero .lead{color:var(--muted)}

  .prose{padding:96px 0}
  .rich{max-width:780px}
  .rich .label{margin-bottom:22px}
  .rich h2{font-family:'Fraunces',serif;font-weight:300;font-size:clamp(28px,3.4vw,46px);letter-spacing:-.015em;line-height:1.06;margin:0 0 20px;color:var(--ink)}
  .rich h2 em{font-style:italic}
  .rich h3{font-family:'Fraunces',serif;font-weight:500;font-size:21px;margin:36px 0 10px;color:var(--ink)}
  .rich p{color:var(--muted);font-size:16.5px;font-weight:300;margin-bottom:16px;line-height:1.75}
  .rich ul{list-style:none;margin:4px 0 20px;display:flex;flex-direction:column;gap:12px}
  .rich li{position:relative;padding-left:24px;color:var(--text);font-weight:300;font-size:16px}
  .rich li::before{content:"+";position:absolute;left:0;top:0;color:var(--ink);font-weight:600}
  .rich a.inline{color:var(--ink);border-bottom:1px solid var(--line-l)}
  .rich a.inline:hover{border-color:var(--ink)}
  .two-col{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
  @media(max-width:880px){.two-col{grid-template-columns:1fr;gap:38px}}

  .svc-pages{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:6px}
  .svc-pages .card{display:block;border:1px solid var(--line-l);border-radius:16px;padding:30px 26px;
    background:var(--paper);transition:transform .5s var(--ease),box-shadow .5s,border-color .4s}
  .svc-pages .card:hover{transform:translateY(-6px);box-shadow:0 34px 64px -42px rgba(0,0,0,.4)}
  .svc-pages h3{font-family:'Fraunces',serif;font-weight:400;font-size:22px;margin-bottom:10px;color:var(--ink)}
  .svc-pages p{color:var(--muted);font-size:14.5px;font-weight:300}
  .svc-pages .go{margin-top:16px;display:inline-block;font-size:13.5px;color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:2px}
  @media(max-width:880px){.svc-pages{grid-template-columns:1fr}}

  /* formulaire de devis */
  .formwrap{max-width:700px;margin:0 auto;background:var(--paper);border:1px solid var(--line-l);
    border-radius:20px;padding:42px}
  .field{margin-bottom:20px}
  .field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;letter-spacing:.02em}
  .field label .opt{opacity:.6;font-style:italic;letter-spacing:0}
  .field input,.field select,.field textarea{width:100%;background:var(--paper-2);border:1px solid var(--line-l);
    border-radius:10px;padding:13px 15px;color:var(--text);font-family:inherit;font-size:15px;transition:border-color .25s,background .25s}
  .field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink);background:var(--paper)}
  .field textarea{resize:vertical;min-height:130px}
  .frow{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  @media(max-width:680px){.frow{grid-template-columns:1fr}}
  .form-submit{width:100%;justify-content:center;margin-top:6px;cursor:pointer;font-size:15px}
  .form-alt{margin-top:26px;text-align:center;color:var(--muted);font-size:14px}
  .form-alt a{color:var(--ink);border-bottom:1px solid var(--line-l)}
  .form-alt a:hover{border-color:var(--ink)}

  .merci-wrap{min-height:64vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:140px 0 90px}
  .merci-wrap h1{font-family:'Fraunces',serif;font-weight:300;font-size:clamp(34px,5vw,58px);letter-spacing:-.02em;color:var(--ink)}
  .merci-wrap p{margin:18px auto 30px;color:var(--muted);max-width:46ch;font-weight:300}



  /* ===== vidéo d'obsidienne fluide (fond du hero d'accueil) ===== */
  .hero-video{position:absolute;inset:0;z-index:0;filter:grayscale(1) contrast(1.05) brightness(.7)}
  html[data-theme="day"] .hero-video{filter:grayscale(1) contrast(1.03) brightness(1.04)}
  .hero-video .vlayer{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity 1.2s linear}
  .v-day{display:none}
  html[data-theme="day"] .v-night{display:none}
  html[data-theme="day"] .v-day{display:block}

  /* ===== liens légaux footer ===== */
  .foot-legal{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
  .foot-legal a{color:var(--muted-d);font-size:13px;transition:color .3s}
  .foot-legal a:hover{color:var(--paper)}

  /* ===== bandeau cookies ===== */
  .cookie{position:fixed;left:20px;right:20px;bottom:20px;z-index:200;max-width:560px;margin:0 auto;
    background:var(--ink);color:var(--paper);border:1px solid var(--line-d);border-radius:14px;
    padding:18px 20px;display:flex;gap:18px;align-items:center;justify-content:space-between;flex-wrap:wrap;
    box-shadow:0 26px 60px -28px rgba(0,0,0,.7);transform:translateY(160%);transition:transform .6s var(--ease)}
  .cookie.show{transform:none}
  .cookie p{font-size:13px;line-height:1.55;color:var(--muted-d);font-weight:300;flex:1;min-width:210px;margin:0}
  .cookie p a{color:var(--paper);border-bottom:1px solid var(--line-d)}
  .cookie-act{display:flex;gap:10px}
  .cookie button{cursor:pointer;border-radius:100px;padding:9px 18px;font-size:13px;font-weight:500;
    border:1px solid var(--line-d);background:transparent;color:var(--paper);transition:transform .2s,background .25s,color .25s}
  .cookie button.acc{background:#fff;color:var(--ink);border-color:#fff}
  .cookie button:hover{transform:translateY(-1px)}
  @media(max-width:480px){.cookie{flex-direction:column;align-items:stretch}.cookie-act{justify-content:flex-end}}

  /* ===== chatbot Arkhan ===== */
  .chat-launch{position:fixed;right:22px;bottom:22px;z-index:210;width:58px;height:58px;border-radius:50%;
    background:var(--ink);color:#fff;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;
    box-shadow:0 18px 40px -14px rgba(0,0,0,.5);transition:transform .35s var(--ease)}
  .chat-launch:hover{transform:translateY(-3px) scale(1.05)}
  .chat-launch svg{width:24px;height:24px}
  .chat-launch .x{display:none}
  body.chat-open .chat-launch .ic-chat{display:none}
  body.chat-open .chat-launch .x{display:block}
  .chat-panel{position:fixed;right:22px;bottom:92px;z-index:210;width:min(360px,calc(100vw - 44px));
    height:min(540px,calc(100vh - 130px));background:var(--paper);border:1px solid var(--line-l);border-radius:18px;
    box-shadow:0 34px 80px -28px rgba(0,0,0,.5);display:flex;flex-direction:column;overflow:hidden;
    opacity:0;transform:translateY(16px) scale(.98);pointer-events:none;
    transition:opacity .35s var(--ease),transform .35s var(--ease)}
  body.chat-open .chat-panel{opacity:1;transform:none;pointer-events:auto}
  .chat-head{display:flex;align-items:center;gap:11px;padding:15px 18px;border-bottom:1px solid var(--line-l)}
  .chat-head img{height:24px;width:auto}
  .chat-head .ht b{font-family:'Fraunces',serif;font-weight:500;font-size:15px;color:var(--ink);display:block;line-height:1.1}
  .chat-head .st{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:5px;margin-top:2px}
  .chat-head .st i{width:6px;height:6px;border-radius:50%;background:#2faa5e;display:inline-block}
  .chat-body{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:10px}
  .msg{max-width:84%;padding:11px 14px;border-radius:15px;font-size:14px;line-height:1.5}
  .msg.bot{background:var(--paper-2);color:var(--text);border-bottom-left-radius:4px;align-self:flex-start}
  .msg.user{background:var(--ink);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}
  .msg a.cta{display:inline-flex;align-items:center;gap:6px;margin-top:8px;background:var(--ink);color:#fff;
    padding:8px 13px;border-radius:100px;font-size:12.5px;font-weight:500}
  .msg.bot a.cta+a.cta{margin-left:8px}
  .chat-chips{display:flex;flex-wrap:wrap;gap:7px;align-self:flex-start;max-width:100%}
  .chat-chips button{border:1px solid var(--line-l);background:transparent;color:var(--ink);border-radius:100px;
    padding:7px 12px;font-size:12.5px;cursor:pointer;font-family:inherit;transition:background .2s,color .2s,border-color .2s}
  .chat-chips button:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
  .chat-foot{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line-l)}
  .chat-foot input{flex:1;border:1px solid var(--line-l);border-radius:100px;padding:10px 15px;font-family:inherit;
    font-size:14px;background:var(--paper-2);color:var(--text)}
  .chat-foot input:focus{outline:none;border-color:var(--ink)}
  .chat-foot button{width:40px;height:40px;border-radius:50%;border:0;background:var(--ink);color:#fff;cursor:pointer;flex:none;font-size:16px}


  /* ===== FAQ ===== */
  .faq{max-width:800px}
  .faq details{border-top:1px solid var(--line-d);padding:2px 0}
  .faq details:last-child{border-bottom:1px solid var(--line-d)}
  .faq summary{cursor:pointer;list-style:none;padding:22px 0;font-family:'Fraunces',serif;font-weight:400;
    font-size:clamp(18px,2vw,23px);color:var(--paper);display:flex;justify-content:space-between;align-items:center;gap:18px}
  .faq summary::-webkit-details-marker{display:none}
  .faq summary::after{content:"+";font-family:'Inter',sans-serif;font-weight:300;font-size:24px;color:var(--muted-d);transition:transform .3s var(--ease)}
  .faq details[open] summary::after{transform:rotate(45deg)}
  .faq details p{color:var(--muted-d);font-weight:300;font-size:15.5px;line-height:1.7;padding:0 0 24px;max-width:66ch}
  .price-note{text-align:center;margin-top:30px;color:var(--muted);font-size:14.5px;font-weight:300}
  .price-note b{color:var(--ink);font-weight:500}


  /* ===== menu déroulant Site web ===== */
  .nav-drop{position:relative}
  .nav-droplink{background:none;border:0;cursor:pointer;font-family:inherit;font-size:14px;color:#fff;opacity:.82;
    display:inline-flex;align-items:center;gap:6px;padding:0;transition:opacity .3s,color .4s}
  .nav-droplink svg{transition:transform .3s var(--ease)}
  header.nav.scrolled .nav-droplink{color:var(--text)}
  html[data-theme="day"] .nav-droplink{color:var(--text)}
  .nav-drop:hover .nav-droplink,.nav-drop:focus-within .nav-droplink{opacity:1}
  .nav-drop:hover .nav-droplink svg,.nav-drop:focus-within .nav-droplink svg{transform:rotate(180deg)}
  .submenu{position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(8px);
    background:var(--paper);border:1px solid var(--line-l);border-radius:14px;padding:10px;min-width:250px;
    display:flex;flex-direction:column;gap:2px;box-shadow:0 30px 60px -28px rgba(0,0,0,.4);
    opacity:0;visibility:hidden;transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s}
  .nav-drop:hover .submenu,.nav-drop:focus-within .submenu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
  .submenu a{color:var(--text)!important;opacity:1!important;font-size:14px;padding:11px 14px;border-radius:9px;transition:background .2s}
  .submenu a::after{display:none!important}
  .submenu a:hover{background:var(--paper-2)}
  .submenu .sub-all{color:var(--muted)!important;font-size:13px;border-top:1px solid var(--line-l);border-radius:0;margin-top:4px}
  @media(max-width:1024px){
    .nav-drop{width:100%}
    .nav-droplink{font-size:20px;color:var(--ink);opacity:.9;width:100%;justify-content:space-between}
    .nav-drop.open .nav-droplink svg{transform:rotate(180deg)}
    .submenu{position:static;transform:none!important;opacity:1;visibility:visible;background:none;border:0;box-shadow:none;
      padding:0 0 0 14px;min-width:0;gap:14px;display:none}
    .nav-drop.open .submenu{display:flex;margin-top:14px}
    .submenu a{font-size:16px;padding:0;border-radius:0}
    .submenu a:hover{background:none}
    .submenu .sub-all{border-top:0;margin-top:0}
  }


  /* ===== page IA ===== */
  .ai-demo{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
    background:var(--ink);color:var(--paper);border-radius:18px;padding:30px 34px;margin-bottom:46px}
  .ai-demo-lab{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted-d);margin-bottom:10px}
  .ai-demo h2{font-family:'Fraunces',serif;font-weight:400;font-size:clamp(22px,2.6vw,30px);color:#fff;letter-spacing:-.01em}
  .ai-demo p{color:var(--muted-d);font-size:14.5px;font-weight:300;margin-top:6px;max-width:46ch}
  .ai-demo .btn{background:#fff;color:var(--ink);border-color:#fff;flex:none}
  .ai-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
  .ai-stat{border-top:1px solid var(--line-l);padding-top:18px}
  .ai-stat .n{font-family:'Fraunces',serif;font-weight:400;font-size:clamp(26px,3.4vw,42px);letter-spacing:-.02em;color:var(--ink);line-height:1}
  .ai-stat .l{color:var(--muted);font-size:13.5px;margin-top:8px}
  .ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .ai-card{border:1px solid var(--line-l);border-radius:16px;padding:30px 26px;background:var(--paper);
    transition:transform .5s var(--ease),box-shadow .5s,border-color .4s}
  .ai-card:hover{transform:translateY(-6px);box-shadow:0 34px 64px -42px rgba(0,0,0,.4)}
  .ai-ico{width:46px;height:46px;border-radius:12px;border:1px solid var(--line-l);display:flex;align-items:center;
    justify-content:center;color:var(--ink);margin-bottom:18px}
  .ai-card h3{font-family:'Fraunces',serif;font-weight:400;font-size:21px;margin-bottom:10px;color:var(--ink)}
  .ai-card p{color:var(--muted);font-size:14.5px;font-weight:300;line-height:1.6}
  @media(max-width:860px){.ai-grid{grid-template-columns:1fr}.ai-stats{grid-template-columns:1fr 1fr}.ai-demo{flex-direction:column;align-items:flex-start}}


  /* ===== blog ===== */
  .blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .blog-card{display:flex;flex-direction:column;border:1px solid var(--line-l);border-radius:16px;padding:28px 26px;
    background:var(--paper);transition:transform .5s var(--ease),box-shadow .5s,border-color .4s;height:100%}
  .blog-card:hover{transform:translateY(-6px);box-shadow:0 34px 64px -42px rgba(0,0,0,.4)}
  .bc-cat{font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
  .blog-card h3{font-family:'Fraunces',serif;font-weight:400;font-size:21px;line-height:1.25;letter-spacing:-.01em;color:var(--ink);margin-bottom:12px}
  .blog-card p{color:var(--muted);font-size:14.5px;font-weight:300;line-height:1.6;flex:1}
  .bc-meta{display:flex;justify-content:space-between;align-items:center;margin-top:20px;font-size:13px;color:var(--muted)}
  .bc-meta span:last-child{color:var(--ink)}
  @media(max-width:1024px){.blog-grid{grid-template-columns:1fr 1fr}}
  @media(max-width:680px){.blog-grid{grid-template-columns:1fr}}

  /* ===== article ===== */
  .art-meta{font-family:'Inter',sans-serif;font-size:12px;letter-spacing:.14em;text-transform:uppercase;
    color:rgba(255,255,255,.65);margin-bottom:16px}
  html[data-theme="day"] .art-meta{color:var(--muted)}
  .article .lede{font-family:'Fraunces',serif;font-weight:300;font-size:clamp(19px,2.2vw,24px);line-height:1.5;
    color:var(--ink);margin-bottom:26px;max-width:none}


  /* ===== statut formulaire devis / Supabase ===== */
  .form-status{margin:0 0 18px;padding:13px 16px;border-radius:12px;border:1px solid var(--line-l);
    background:var(--paper-2);color:var(--muted);font-size:14px}
  .form-status[data-tone="info"]{color:var(--ink);border-color:rgba(10,10,10,.18)}
  .form-status[data-tone="warn"]{color:#6f4d00;background:#fff7df;border-color:#e8cf83}
  .form-submit.is-loading{opacity:.72;pointer-events:none}