:root{
    --ink:#f4ecda;
    --ink-soft:#c9bfa6;
    --paper:#1c1712;
    --paper-dim:#27201a;
    --focus:#e2672e;
    --focus-soft:#e2672e2e;
    --line:#3d352b;
    --max:1400px;
    --header-h:76px;
    --contact-bg:#1c1712;
    --contact-ink:#f4ecda;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:'Inter',system-ui,sans-serif;
    font-size:16px;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  h1,h2,h3{
    font-family:'Fraunces',serif;
    font-weight:560;
    letter-spacing:-0.01em;
    margin:0;
    color:var(--focus);
  }
  .mono{
    font-family:'IBM Plex Mono',monospace;
    letter-spacing:0.02em;
  }
  a{color:inherit;}
  .wrap{
    max-width:var(--max);
    margin:0 auto;
    padding:0 32px;
    width:100%;
  }
  @media (min-width:769px){
    .panel > .wrap{
      padding-left:96px;
      padding-right:96px;
    }
  }
  @media (min-width:769px) and (max-width:900px){
    .panel > .wrap{
      padding-left:80px;
      padding-right:80px;
    }
  }
  ::selection{background:var(--focus-soft);}

  a:focus-visible, button:focus-visible{
    outline:2px solid var(--focus);
    outline-offset:3px;
  }

  @media (prefers-reduced-motion: reduce){
    *{animation:none !important; transition:none !important;}
  }

  /* ---------- header ---------- */
  header{
    position:fixed;
    top:0; left:0; right:0;
    z-index:100;
    height:var(--header-h);
    display:flex;
    align-items:center;
    background:color-mix(in srgb, var(--paper) 88%, transparent);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  .nav{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:0 32px;
    max-width:var(--max);
    margin:0 auto;
    width:100%;
  }
  .nav-name{
    display:flex;
    align-items:center;
    gap:12px;
    font-family:'Fraunces',serif;
    font-weight:560;
    font-size:1.4rem;
    letter-spacing:-0.01em;
    line-height:1.2;
  }
  .nav-logo{
    height:34px;
    width:auto;
    display:block;
    flex-shrink:0;
  }
  .nav-links{
    display:flex;
    gap:28px;
    list-style:none;
    margin:0;
    padding:0;
  }
  .nav-links a{
    text-decoration:none;
    font-size:0.82rem;
    text-transform:uppercase;
    letter-spacing:0.08em;
    color:var(--ink-soft);
    font-family:'IBM Plex Mono',monospace;
    transition:color .15s ease;
  }
  .nav-links a.active{
    color:var(--focus);
    border-bottom:1px solid var(--focus);
    padding-bottom:4px;
  }
  .nav-links a:hover{color:var(--focus);}
  .nav-links{display:none;}
  @media (min-width:720px){ .nav-links{display:flex;} }

  /* ---------- menu mobile (burger + panneau déroulant) ---------- */
  .nav-burger{
    display:none;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    gap:5px;
    width:32px;
    height:32px;
    padding:0;
    background:none;
    border:none;
    cursor:pointer;
    flex-shrink:0;
  }
  .nav-burger span{
    display:block;
    width:100%;
    height:2px;
    background:var(--ink);
    transition:transform .2s ease, opacity .2s ease;
  }
  .nav-burger[aria-expanded="true"] span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
  .nav-burger[aria-expanded="true"] span:nth-child(2){ opacity:0; }
  .nav-burger[aria-expanded="true"] span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

  .mobile-nav{
    display:none;
    position:fixed;
    top:var(--header-h);
    left:0; right:0;
    z-index:99;
    background:color-mix(in srgb, var(--paper) 96%, transparent);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
    max-height:0;
    overflow:hidden;
    transition:max-height .25s ease;
  }
  .mobile-nav.open{ max-height:420px; }
  .mobile-nav ul{ list-style:none; margin:0; padding:8px 32px 20px; }
  .mobile-nav a{
    display:block;
    padding:14px 0;
    border-bottom:1px solid var(--line);
    text-decoration:none;
    font-family:'IBM Plex Mono',monospace;
    font-size:0.85rem;
    text-transform:uppercase;
    letter-spacing:0.08em;
    color:var(--ink-soft);
  }
  .mobile-nav li:last-child a{ border-bottom:none; }
  .mobile-nav a:hover, .mobile-nav a.active{ color:var(--focus); }

  @media (max-width:719px){
    .nav-burger{ display:flex; }
    .mobile-nav{ display:block; }
  }

  /* ---------- viewfinder bracket, the signature element ---------- */
  .bracket{ position:relative; }
  .bracket::before, .bracket::after, .bracket .b-tr, .bracket .b-bl{
    content:"";
    position:absolute;
    width:26px;
    height:26px;
    border:2px solid var(--focus);
  }
  .bracket::before{ top:-14px; left:-14px; border-right:none; border-bottom:none; }
  .bracket::after{ bottom:-14px; right:-14px; border-left:none; border-top:none; }
  .bracket .b-tr{ top:-14px; right:-14px; border-left:none; border-bottom:none; }
  .bracket .b-bl{ bottom:-14px; left:-14px; border-right:none; border-top:none; }

  /* ---------- horizontal track ---------- */
  #hscroll{
    display:flex;
    width:100%;
    height:100vh;
    overflow-x:auto;
    overflow-y:hidden;
    scroll-snap-type:x mandatory;
    scroll-behavior:smooth;
    -webkit-overflow-scrolling:touch;
  }
  #hscroll::-webkit-scrollbar{ display:none; }
  .panel{
    position:relative;
    flex:0 0 100vw;
    width:100vw;
    height:100vh;
    scroll-snap-align:start;
    overflow-y:auto;
    overflow-x:hidden;
    display:flex;
    flex-direction:column;
    justify-content:flex-start;
    padding:calc(var(--header-h) + 40px) 0 56px;
    border-bottom:none;
    background:var(--paper);
    transition:background .2s ease;
  }
  .panel > .wrap{
    position:relative;
    z-index:1;
    margin-top:auto;
    margin-bottom:auto;
  }

  /* ---------- teinte claire unifiée (hero et contact restent sombres) ---------- */
  #piliers, #preuves, #collectif{
    --paper:#efece3;
    --paper-dim:#e3e0d5;
    --ink:#211f1a;
    --ink-soft:#6a6659;
    --line:#d4d0c3;
  }

  /* ---------- grain papier ---------- */
  .panel-light::after{
    content:"";
    position:absolute;
    inset:0;
    z-index:0;
    pointer-events:none;
    opacity:0.5;
    mix-blend-mode:multiply;
    background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  }

  /* ---------- formes décoratives abstraites ---------- */
  .deco{ position:absolute; pointer-events:none; z-index:0; }
  .deco-halo{
    border-radius:50%;
    background:radial-gradient(circle, rgba(20,16,12,0.5) 0%, rgba(20,16,12,0) 72%);
    filter:blur(6px);
  }
  .deco-ring{ border-radius:50%; border:1px solid var(--line); }
  .deco-dot{ border-radius:50%; background:var(--focus); }
  .deco-dot.soft{ background:var(--ink); opacity:0.18; }
  .deco-photo{
    border-radius:28px;
    -webkit-mask-image:linear-gradient(135deg, black 35%, transparent 82%);
    mask-image:linear-gradient(135deg, black 35%, transparent 82%);
    opacity:0.92;
  }

  #hero{
    position:relative;
    background-image:url("../images/expressions-visuelles-bg.jpg");
    background-size:cover;
    background-position:center;
  }
  #hero::before{
    content:"";
    position:absolute;
    inset:0;
    background:radial-gradient(ellipse 60% 55% at center, rgba(20,16,12,0.8) 0%, rgba(20,16,12,0.6) 55%, rgba(20,16,12,0.35) 100%);
    z-index:0;
  }
  #hero > .wrap{
    position:relative;
    z-index:1;
  }

  /* ---------- hero ---------- */
  .hero-frame{
    padding:60px 44px;
    margin:0 auto;
    max-width:820px;
    text-align:center;
  }
  .eyebrow{
    font-size:0.78rem;
    color:var(--focus);
    text-transform:uppercase;
    letter-spacing:0.16em;
    line-height:1.7;
    margin-bottom:22px;
    display:block;
  }
  .hero-frame h1{
    font-size:clamp(2.2rem, 5vw, 3.6rem);
    line-height:1.08;
  }
  .lede{
    margin-top:24px;
    font-size:1.15rem;
    color:var(--ink-soft);
    max-width:560px;
    margin-left:auto;
    margin-right:auto;
  }
  .hero-cta{
    margin-top:40px;
    display:flex;
    gap:16px;
    justify-content:center;
    flex-wrap:wrap;
  }
  .btn{
    display:inline-block;
    padding:14px 28px;
    font-family:'IBM Plex Mono',monospace;
    font-size:0.85rem;
    text-transform:uppercase;
    letter-spacing:0.06em;
    text-decoration:none;
    border-radius:2px;
    transition:transform .15s ease, background .15s ease;
  }
  .btn-primary{ background:var(--ink); color:var(--paper); }
  .btn-primary:hover{ background:var(--focus); transform:translateY(-1px); }
  .btn-ghost{ border:1px solid var(--ink-soft); color:var(--ink); }
  .btn-ghost:hover{ border-color:var(--focus); color:var(--focus); }

  .fstop-rule{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    padding:36px 0 0;
    color:var(--ink-soft);
  }
  .fstop-rule .dot{ width:5px;height:5px;border-radius:50%;background:var(--ink-soft); }
  .fstop-rule span.label{
    font-family:'IBM Plex Mono',monospace;
    font-size:0.72rem;
    letter-spacing:0.1em;
  }

  .section-head{
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    gap:24px;
    margin-bottom:32px;
    flex-wrap:wrap;
  }
  .section-head .tag{
    font-family:'IBM Plex Mono',monospace;
    font-size:0.78rem;
    color:var(--focus);
    letter-spacing:0.1em;
    text-transform:uppercase;
  }
  .section-head h2{ font-size:clamp(1.5rem, 2.6vw, 2.1rem); }
  .subhead{
    font-family:'IBM Plex Mono',monospace;
    font-size:0.74rem;
    color:var(--focus);
    letter-spacing:0.1em;
    text-transform:uppercase;
    margin:34px 0 16px;
  }
  .subhead:first-of-type{ margin-top:0; }

  /* piliers */
  .piliers{
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(240px,1fr));
    gap:1px;
    background:var(--line);
    border:1px solid var(--line);
  }
  @media (min-width:860px){
    #piliers .piliers{ grid-template-columns:repeat(3, 1fr); }
  }
  .pilier{ background:var(--paper); padding:24px 22px; }
  .pilier .fstop{
    font-family:'IBM Plex Mono',monospace;
    color:var(--focus);
    font-size:0.82rem;
    margin-bottom:12px;
    display:block;
  }
  .pilier h3{ font-size:1.08rem; margin-bottom:8px; }
  .pilier .hook{
    font-family:'Fraunces',serif;
    font-style:italic;
    font-weight:440;
    font-size:0.94rem;
    color:var(--ink);
    margin:0 0 8px;
  }
  .pilier p{ color:var(--ink-soft); font-size:0.87rem; margin:0; }

  .eco-head{
    display:flex;
    align-items:center;
    gap:44px;
    margin-bottom:40px;
    flex-wrap:wrap;
  }
  .eco-head-text{ flex:1 1 420px; }
  .eco-illustration{
    flex:0 0 auto;
    width:260px;
    height:260px;
    object-fit:cover;
    border-radius:16px;
    display:block;
  }
  @media (max-width:900px){
    .eco-illustration{ width:200px;height:200px; }
  }
  @media (max-width:560px){
    .eco-head{ flex-direction:column; align-items:flex-start; }
    .eco-illustration{ width:100%;height:auto;max-height:280px; }
  }

  .eco-grid{ grid-template-columns:repeat(2, 1fr) !important; }
  @media (min-width:1000px){
    .eco-grid{ grid-template-columns:repeat(4, 1fr) !important; }
  }
  @media (max-width:520px){
    .eco-grid{ grid-template-columns:1fr !important; }
  }

  /* preuves - film frame counter */
  .frames{ display:flex; flex-direction:column; gap:0; }
  .frame{
    display:grid;
    grid-template-columns:88px 1fr;
    gap:24px;
    padding:20px 0;
    border-top:1px solid var(--line);
    align-items:start;
  }
  .frame:last-child{ border-bottom:1px solid var(--line); }
  .frame-no{ font-family:'IBM Plex Mono',monospace; color:var(--focus); font-size:0.9rem; }
  .frame-body h3{ font-size:1.05rem; margin-bottom:6px; }
  .frame-body p{ color:var(--ink-soft); margin:0 0 10px; font-size:0.9rem; }
  .metric{
    display:inline-block;
    font-family:'IBM Plex Mono',monospace;
    font-size:0.74rem;
    color:var(--ink);
    background:var(--paper);
    border:1px solid var(--line);
    padding:4px 10px;
    border-radius:2px;
    margin:4px 8px 0 0;
  }

  /* contact */
  .contact-panel{ text-align:center; }
  .contact-mark{
    display:block;
    height:92px;
    width:auto;
    margin:0 auto 28px;
  }
  .contact-panel h2{
    font-size:clamp(1.8rem, 4vw, 2.6rem);
    max-width:640px;
    margin:0 auto 20px;
  }
  .contact-panel > .wrap > p{
    color:var(--ink-soft);
    max-width:480px;
    margin:0 auto 36px;
  }
  .contact-links{
    display:flex;
    gap:18px;
    justify-content:center;
    flex-wrap:wrap;
    margin-top:32px;
  }
  .contact-links a{
    font-family:'IBM Plex Mono',monospace;
    font-size:0.85rem;
    text-decoration:none;
    color:var(--ink-soft);
    border-bottom:1px solid transparent;
    padding-bottom:2px;
    transition:color .15s ease, border-color .15s ease;
  }
  .contact-links a:hover{ color:var(--focus); border-color:var(--focus); }
  .credit{
    margin-top:56px;
    font-family:'IBM Plex Mono',monospace;
    font-size:0.68rem;
    color:var(--ink-soft);
    letter-spacing:0.05em;
    opacity:0.7;
  }

  /* ---------- horizontal nav chrome: arrows + dots ---------- */
  .hnav-btn{
    position:fixed;
    top:50%;
    transform:translateY(-50%);
    z-index:90;
    width:48px;
    height:48px;
    border-radius:50%;
    border:1px solid var(--line);
    background:color-mix(in srgb, var(--paper) 78%, transparent);
    backdrop-filter:blur(4px);
    color:var(--ink);
    display:flex;
    align-items:center;
    justify-content:center;
    cursor:pointer;
    transition:border-color .15s ease, color .15s ease, opacity .2s ease;
  }
  .hnav-btn:hover{ border-color:var(--focus); color:var(--focus); }
  .hnav-btn[disabled]{ display:none; }
  #prevBtn{ left:24px; }
  #nextBtn{ right:24px; }

  .hdots{
    position:fixed;
    left:50%;
    bottom:26px;
    transform:translateX(-50%);
    z-index:90;
    display:flex;
    gap:12px;
  }
  .hdot{
    width:9px;
    height:9px;
    border-radius:50%;
    border:1px solid var(--line);
    background:transparent;
    padding:0;
    cursor:pointer;
    transition:background .15s ease, border-color .15s ease, transform .15s ease;
  }
  .hdot.active{ background:var(--focus); border-color:var(--focus); transform:scale(1.15); }

  @media (max-width:768px){
    #hscroll{
      display:block;
      height:auto;
      overflow-x:hidden;
      overflow-y:visible;
      scroll-snap-type:none;
    }
    .panel{
      width:100%;
      height:auto;
      min-height:auto;
      scroll-snap-align:none;
      display:block;
      padding:calc(var(--header-h) + 32px) 0 56px;
      border-bottom:1px solid var(--line);
    }
    .hnav-btn, .hdots{ display:none; }
  }