:root{
    --bg:#06060b; --cyan:#00f0ff; --violet:#7b2ff7; --line:#f8f8fa; --text:#f8f8fa; --muted:#aeb0bd;
    --warm:#e8a24c; --warm2:#d2703a;
    --display:'Clash Display',sans-serif; --body:'General Sans',sans-serif; --mono:'Space Mono',monospace;
    --grad:linear-gradient(120deg,var(--cyan),var(--violet));
    --gradw:linear-gradient(120deg,var(--warm),var(--warm2));
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  html,body{margin:0;background:var(--bg);color:var(--text);font-family:var(--body)}

  /* ===== Ambiances enchaînées (crossfade façon accueil, gaté) ===== */
  .oamb{position:fixed;inset:0;z-index:1;overflow:hidden;pointer-events:none;will-change:opacity;opacity:0}
  .oamb video{width:100%;height:100%;object-fit:cover;transform-origin:center;transform:scale(1.14);transition:transform 1.2s cubic-bezier(.22,1,.36,1)}
  .oamb.act video{transform:scale(1)}
  .oamb::after{content:"";position:absolute;inset:0;
    background:radial-gradient(64% 66% at 50% 42%, #06060b33 0%, #06060ba6 60%, #06060bee 100%)}
  #ambMain video{filter:brightness(.5) saturate(1.1)}
  #ambFaq video{filter:brightness(.5) saturate(1.12)}

  .page{position:relative;z-index:2}

  /* ===== Chip coin coupé ===== */
  .chip{display:inline-block;font-family:var(--mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);
    background:#00f0ff1a;padding:.32rem .74rem;margin:0 0 18px;
    clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px)}

  /* ===== Nav biseautée ===== */
  .nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:14px clamp(16px,4vw,38px);background:linear-gradient(180deg,#06060bcc,#06060b00);
    backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid transparent;transition:background .3s ease,border-color .3s ease}
  .nav.scrolled{background:#06060be6;border-bottom-color:#ffffff12}
  .nav__logo{display:inline-flex;align-items:center;gap:11px;font-family:var(--display);font-weight:800;letter-spacing:.14em;font-size:.86rem;color:var(--text);text-decoration:none;white-space:nowrap}
  .nav__logo img{display:block;height:23px;width:auto}
    .nav__right{display:flex;align-items:center;gap:24px}
  .nav__links{display:flex;align-items:center;gap:24px}
  .nav__links a{font-size:.88rem;color:var(--muted);text-decoration:none;transition:color .2s ease}
  .nav__links a:hover{color:var(--text)}
  .nav__links a:focus-visible,.foot__col a:focus-visible,.foot__brand a:focus-visible,.eco:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:2px}
  .nav__cta{position:relative;display:inline-flex;align-items:center;gap:.5rem;font-weight:600;font-size:.88rem;color:var(--text);
    background:#e8a24c70;padding:.56rem 1.1rem;text-decoration:none;white-space:nowrap;
    clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
    transition:transform .2s ease,filter .25s ease,background .25s ease}
  .nav__cta::after{content:"";position:absolute;inset:1.4px;z-index:-1;background:#120d07;
    clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px)}
  .nav__cta svg{width:15px;height:15px}
  .nav__cta:hover{transform:translateY(-2px);background:var(--warm);filter:drop-shadow(0 8px 16px #e8a24c88)}
  .nav__cta:hover::after{background:#1a1206}
  .nav__cta:focus-visible{outline:2px solid var(--warm);outline-offset:3px}
  @media (max-width:760px){ .nav__links{display:none} .nav__right{gap:0} }

  .reveal{opacity:0;transform:translateY(40px) scale(.97);transition:opacity .75s cubic-bezier(.22,1,.36,1),transform .75s cubic-bezier(.22,1,.36,1);transition-delay:calc(var(--i,0)*80ms)}
  .reveal.in{opacity:1;transform:none}

  /* ===== Boutons signature ECG (contour biseauté, pouls) ===== */
  .btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:.6rem;font-family:var(--body);font-weight:600;font-size:.96rem;color:var(--text);
    text-decoration:none;cursor:pointer;background:#00f0ff5c;border:none;padding:.86rem 1.5rem;white-space:nowrap;
    clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
    transition:transform .2s ease,filter .25s ease,background .25s ease,opacity .2s ease}
  .btn::after{content:"";position:absolute;inset:1.5px;z-index:-1;background:#0a0a12;
    clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px)}
  .btn::before{content:"";width:30px;height:16px;flex:none;opacity:.92;
    background:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='58'%20height='16'%20viewBox='0%200%2058%2016'%3E%3Cpath%20d='M0%208H17l3-5%204%2010%203-12%203%207h25'%20fill='none'%20stroke='%2300f0ff'%20stroke-width='2'%20stroke-linecap='round'%20stroke-linejoin='round'/%3E%3C/svg%3E") repeat-x left center/58px 16px;
    animation:ecgscroll 1.9s linear infinite}
  @keyframes ecgscroll{to{background-position-x:-58px}}
  .btn svg{width:16px;height:16px;transition:transform .25s ease}
  .btn:hover{transform:translateY(-2px);background:var(--cyan);filter:drop-shadow(0 8px 18px #00f0ff88)}
  .btn:hover::after{background:#0d1420}
  .btn:hover::before{animation-duration:.85s}
  .btn:hover svg{transform:translateX(4px)}
  .btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
  .btn--warm{background:var(--warm)}
  .btn--warm::after{background:#140c03;transform-origin:right;transition:transform .4s cubic-bezier(.22,1,.36,1)}
  .btn--warm::before{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='58'%20height='16'%20viewBox='0%200%2058%2016'%3E%3Cpath%20d='M0%208H17l3-5%204%2010%203-12%203%207h25'%20fill='none'%20stroke='%23e8a24c'%20stroke-width='2'%20stroke-linecap='round'%20stroke-linejoin='round'/%3E%3C/svg%3E")}
  .btn--warm:hover{transform:translateY(-2px);background:var(--warm);color:#1a1206;filter:none}
  .btn--warm:hover::after{transform:scaleX(0)}
  .btn--warm:hover::before{filter:brightness(0)}
  .btn--warm:focus-visible{outline-color:var(--warm)}

  /* ===== Hero ===== */
  .hero{position:relative;max-width:860px;margin:0 auto;padding:clamp(130px,20vh,210px) 6vw clamp(40px,7vh,74px);text-align:center}
  .hero h1{font-family:var(--display);font-weight:700;line-height:1.06;letter-spacing:-.01em;font-size:clamp(2.1rem,5.4vw,3.9rem);margin:0 0 20px;text-shadow:0 2px 30px #06060b}
  .hero h1 em{font-style:normal;color:#ffcf7a}
  .hero p.lede{font-size:clamp(1rem,1.7vw,1.22rem);color:var(--text);line-height:1.64;margin:0 auto;max-width:60ch}

  .sec{position:relative;padding:clamp(56px,9vh,110px) 6vw}
  .sec__wrap{position:relative;z-index:2;max-width:1120px;margin:0 auto}
  .sec__head{max-width:64ch;margin:0 0 clamp(32px,5vh,52px)}
  .sec__title{font-family:var(--display);font-weight:700;line-height:1.1;letter-spacing:-.01em;font-size:clamp(1.8rem,4vw,2.8rem);margin:0 0 14px}
  .sec__title em{font-style:normal;color:#ffcf7a}
  .sec__lead{font-size:clamp(1rem,1.6vw,1.16rem);color:var(--muted);line-height:1.62;margin:0 0 10px}
  .sec__lead b{color:var(--text);font-weight:600}

  /* ===== Écosystèmes clients (liens internes) ===== */
  .eco__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:clamp(26px,4vh,40px)}
  .eco{position:relative;display:block;text-decoration:none;border:1px solid #ffffff14;border-radius:0;padding:26px 24px;background:#0b0b1670;
    backdrop-filter:blur(10px) saturate(1.15);-webkit-backdrop-filter:blur(10px) saturate(1.15);border-top:2px solid var(--cyan);
    transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
  .eco:nth-child(2){border-top-color:var(--violet)}
  .eco:nth-child(3){border-top-color:#2fd08a}
  .eco:hover{transform:translateY(-4px);border-color:#00f0ff55;box-shadow:0 22px 50px -26px #00f0ff55}
  .eco__tag{font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 10px}
  .eco h3{font-family:var(--display);font-weight:600;font-size:1.18rem;margin:0 0 9px;color:var(--text);display:flex;align-items:center;gap:.5rem}
  .eco h3 svg{width:15px;height:15px;color:var(--cyan);flex:none;transition:transform .25s ease}
  .eco:hover h3 svg{transform:translateX(4px)}
  .eco p{font-size:.92rem;color:var(--muted);line-height:1.58;margin:0}

  /* ===== Tableau selon l'éloignement ===== */
  .tablewrap{position:relative;border:1px solid #ffffff14;border-radius:0;background:#0b0b1670;
    backdrop-filter:blur(10px) saturate(1.15);-webkit-backdrop-filter:blur(10px) saturate(1.15);overflow-x:auto;padding:4px}
  table.cmp{width:100%;min-width:620px;border-collapse:collapse;font-size:.94rem}
  table.cmp caption{text-align:left;color:var(--muted);font-size:.84rem;line-height:1.5;padding:16px 18px 6px}
  table.cmp th,table.cmp td{text-align:left;padding:15px 18px;border-bottom:1px solid #ffffff12;vertical-align:top;line-height:1.5}
  table.cmp thead th{font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:400;border-bottom:1px solid #ffffff22}
  table.cmp thead th:first-child{color:var(--cyan)}
  table.cmp tbody th{font-family:var(--display);font-weight:600;font-size:.98rem;color:var(--text);width:22%}
  table.cmp td{color:var(--muted)}
  table.cmp td.same{color:var(--text)}
  table.cmp td.same::before{content:"Identique · ";color:var(--cyan);font-family:var(--mono);font-size:.7rem;letter-spacing:.06em}
  table.cmp tbody tr:last-child th,table.cmp tbody tr:last-child td{border-bottom:none}

  /* ===== 4 zones en paliers concentriques ===== */
  .zones{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:clamp(26px,4vh,40px)}
  .zone{position:relative;border:1px solid #ffffff14;border-radius:0;padding:26px 26px;background:#0b0b1670;
    backdrop-filter:blur(10px) saturate(1.15);-webkit-backdrop-filter:blur(10px) saturate(1.15);
    display:grid;grid-template-columns:62px 1fr;gap:20px;align-items:start}
  .zone__ring{width:62px;height:62px;flex:none}
  .zone__ring circle{fill:none;stroke:#ffffff1f;stroke-width:1.6}
  .zone:nth-child(1) .zone__ring circle:nth-child(1),
  .zone:nth-child(2) .zone__ring circle:nth-child(2),
  .zone:nth-child(3) .zone__ring circle:nth-child(3),
  .zone:nth-child(4) .zone__ring circle:nth-child(4){stroke:var(--cyan);stroke-width:2.2;filter:drop-shadow(0 0 5px #00f0ff88)}
  .zone__dot{fill:var(--cyan);stroke:none}
  .zone__n{font-family:var(--mono);font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);margin:0 0 8px}
  .zone h3{font-family:var(--display);font-weight:600;font-size:1.16rem;margin:0 0 9px;color:var(--text);line-height:1.24}
  .zone h3 span{color:var(--muted);font-weight:400;font-size:.9rem;display:block;margin-top:2px}
  .zone p{font-size:.92rem;color:var(--muted);line-height:1.58;margin:0}

  /* ===== FAQ constellation (accent cyan pour l'ambiance, warm réservé à la conversion) ===== */
  .faq__list{display:flex;flex-direction:column;gap:13px;max-width:900px}
  .qa{border:1px solid #ffffff14;border-radius:0;background:#0b0b1670;backdrop-filter:blur(10px) saturate(1.15);-webkit-backdrop-filter:blur(10px) saturate(1.15);overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}
  .qa[open]{border-color:#00f0ff40;box-shadow:0 18px 44px -28px #00f0ff55}
  .qa summary{list-style:none;cursor:pointer;padding:20px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-family:var(--display);font-weight:600;font-size:clamp(1rem,1.5vw,1.14rem);color:var(--text);transition:color .2s ease}
  .qa summary::-webkit-details-marker{display:none}
  .qa summary::after{content:"";flex:none;width:15px;height:15px;
    background:linear-gradient(var(--cyan),var(--cyan)) no-repeat center/15px 2px,linear-gradient(var(--cyan),var(--cyan)) no-repeat center/2px 15px;
    transition:transform .3s cubic-bezier(.22,1,.36,1)}
  .qa[open] summary::after{transform:rotate(135deg)}
  .qa summary:hover{color:var(--cyan)}
  .qa summary:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
  .qa__a{padding:0 22px 22px;color:var(--muted);line-height:1.68;font-size:.98rem}
  .qa__a strong{color:var(--text);font-weight:600}

  /* ===== Conversion (warm) ===== */
  .convert__card{position:relative;text-align:center;border:1px solid #e8a24c33;border-radius:0;padding:clamp(40px,7vw,78px) clamp(24px,5vw,60px);background:linear-gradient(160deg,#140f08cc,#0a0a12cc);
    backdrop-filter:blur(10px) saturate(1.15);-webkit-backdrop-filter:blur(10px) saturate(1.15);overflow:hidden}
  .convert__card::before{content:"";position:absolute;inset:0;background:radial-gradient(70% 120% at 50% 0%,#e8a24c1c,transparent 62%);pointer-events:none}
  .convert__card h2{position:relative;font-family:var(--display);font-weight:700;font-size:clamp(1.7rem,3.8vw,2.8rem);line-height:1.12;margin:0 0 16px}
  .convert__card h2 em{font-style:normal;color:#ffcf7a}
  .convert__card p{position:relative;color:var(--muted);line-height:1.62;max-width:54ch;margin:0 auto 28px}
  .convert__card .btn{margin:0 auto}

  /* ===== Footer signature (pouls) ===== */
  .foot{position:relative;z-index:40;overflow:hidden;background:#07070d;border-top:1px solid #ffffff14;padding:clamp(50px,7vh,88px) 6vw clamp(18px,3vh,30px);color:var(--muted)}
  .foot::before{content:"";position:absolute;inset:0;background:radial-gradient(70% 130% at 50% 0%,#7b2ff716,transparent 68%);pointer-events:none}
  .foot__pulse{display:block;width:100%;height:42px;margin:clamp(34px,5vh,56px) 0 clamp(16px,3vh,26px);opacity:.55;overflow:visible}
  .foot__pulse path{fill:none;stroke:url(#footGrad);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:14 10;animation:footflow 2.6s linear infinite}
  @keyframes footflow{to{stroke-dashoffset:-48}}
  .foot__wrap{position:relative;z-index:2;max-width:1180px;margin:0 auto}
  .foot__cta{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;padding:0 0 clamp(34px,5vh,52px);margin:0 0 clamp(34px,5vh,52px);border-bottom:1px solid #ffffff14}
  .foot__cta h2{font-family:var(--display);font-weight:700;font-size:clamp(1.5rem,3.4vw,2.5rem);line-height:1.1;margin:0;color:var(--text);letter-spacing:-.01em}
  .foot__cta h2 em{font-style:normal;color:#ffcf7a}
  .foot__top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px 24px}
  .foot__brand p{margin:0 0 9px;font-size:.9rem;line-height:1.6;max-width:36ch}
  .foot__brand a{color:var(--muted);text-decoration:none}
  .foot__brand a:hover{color:var(--text)}
  .foot__col h4{font-family:var(--mono);font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 15px}
  .foot__col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
  .foot__col a{font-size:.9rem;color:#b8bac4;text-decoration:none;transition:color .2s ease}
  .foot__col a:hover{color:var(--cyan)}
  .foot__lockup{display:flex;align-items:center;gap:13px;margin:0 0 14px}
  .foot__mark{width:clamp(52px,6vw,70px);height:auto;flex:none;opacity:.95;animation:footglow 4.5s ease-in-out infinite}
  .foot__name{font-family:var(--display);font-weight:800;font-size:.98rem;color:var(--text);letter-spacing:.14em}
    @keyframes footglow{0%,100%{filter:drop-shadow(0 0 7px #00f0ff40)}50%{filter:drop-shadow(0 0 15px #00f0ff82) drop-shadow(0 0 30px #7b2ff755)}}
  .foot__bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:.8rem;margin-top:22px}
  .foot__bottom p{margin:0}

  @media (max-width:900px){ .eco__grid{grid-template-columns:1fr} .zones{grid-template-columns:1fr} }
  @media (max-width:820px){ .foot__top{grid-template-columns:1fr 1fr} .foot__brand{grid-column:1/-1} }
  @media (max-width:480px){ .foot__top{grid-template-columns:1fr} .foot__bottom{flex-direction:column;align-items:flex-start} .zone{grid-template-columns:1fr} .zone__ring{width:50px;height:50px} }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    .reveal{opacity:1;transform:none;transition:none}
    .oamb video{transform:scale(1.06)!important;transition:none}
    .foot__mark,.foot__pulse path,.btn::before{animation:none!important}
  }