/* ============================================================
   TRACE Investigations
   Feuille de style globale
   ============================================================ */

:root{
  --bg:#0b0d10;
  --bg-2:#111419;
  --bg-3:#171b22;
  --line:#232932;
  --line-soft:#1c2129;
  --txt:#e8eaee;
  --muted:#98a2af;
  --dim:#6f7885;
  --gold:#c9a227;
  --gold-lite:#e3bf4a;
  --gold-soft:rgba(201,162,39,.10);
  --gold-line:rgba(201,162,39,.32);
  --serif:Georgia,"Times New Roman",serif;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--txt);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.68;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:400;letter-spacing:-.012em;line-height:1.18}

.wrap{max-width:1120px;margin:0 auto;padding:0 26px}
.wrap-narrow{max-width:790px;margin:0 auto;padding:0 26px}

/* ---------- utilitaires ---------- */
.kicker{
  font-size:11px;letter-spacing:.24em;text-transform:uppercase;
  color:var(--gold);margin-bottom:15px;font-family:var(--sans);font-weight:500;
}
.tag{
  display:inline-block;font-size:10.5px;letter-spacing:.17em;text-transform:uppercase;
  color:var(--gold);border:1px solid var(--gold-line);background:var(--gold-soft);
  padding:4px 11px;border-radius:2px;
}
.muted{color:var(--muted)}
.dim{color:var(--dim)}
.center{text-align:center}

/* ---------- boutons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--gold);color:#0b0d10;padding:13px 26px;border-radius:2px;
  text-decoration:none;font-size:14px;font-weight:600;letter-spacing:.02em;
  border:1px solid var(--gold);cursor:pointer;font-family:var(--sans);
  transition:background .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.btn:hover{background:var(--gold-lite);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--txt);border-color:var(--line)}
.btn-ghost:hover{background:transparent;border-color:var(--gold);color:var(--gold)}
.btn .arrow{transition:transform .25s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}

/* ---------- header ---------- */
header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,13,16,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{
  font-family:var(--serif);font-size:20px;letter-spacing:.24em;
  text-decoration:none;display:flex;align-items:center;gap:2px;
}
.logo b{font-weight:400}
.logo i{color:var(--gold);font-style:normal}
.nav-links{display:flex;gap:30px;list-style:none;font-size:14px}
.nav-links a{text-decoration:none;color:var(--muted);transition:color .2s;position:relative;padding:4px 0}
.nav-links a:after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--gold);
  transition:width .3s var(--ease);
}
.nav-links a:hover{color:var(--txt)}
.nav-links a:hover:after,.nav-links a.active:after{width:100%}
.nav-links a.active{color:var(--txt)}
.burger{display:none;background:none;border:0;color:var(--txt);font-size:22px;cursor:pointer;padding:6px}
@media(max-width:900px){
  .nav-links{
    position:absolute;top:72px;left:0;right:0;flex-direction:column;gap:0;
    background:var(--bg-2);border-bottom:1px solid var(--line);
    max-height:0;overflow:hidden;transition:max-height .4s var(--ease);
  }
  .nav-links.open{max-height:420px}
  .nav-links li{border-top:1px solid var(--line)}
  .nav-links a{display:block;padding:16px 26px}
  .nav-links a:after{display:none}
  .burger{display:block}
  .nav .btn{display:none}
}

/* ---------- hero avec canvas ---------- */
.hero{
  position:relative;min-height:88vh;display:flex;align-items:center;
  padding:96px 0 88px;border-bottom:1px solid var(--line-soft);overflow:hidden;
}
#fingerprint{
  position:absolute;inset:0;width:100%;height:100%;
  z-index:0;pointer-events:none;
}
.hero .wrap{position:relative;z-index:2}
.hero:after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(100deg,var(--bg) 0%,rgba(11,13,16,.90) 38%,rgba(11,13,16,.25) 66%,transparent 100%);
}
.hero-inner{max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--gold);border:1px solid var(--gold-line);background:var(--gold-soft);
  padding:7px 15px;border-radius:2px;margin-bottom:28px;
}
.pulse{width:6px;height:6px;border-radius:50%;background:var(--gold);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(201,162,39,.5)}50%{opacity:.5;box-shadow:0 0 0 7px rgba(201,162,39,0)}}

h1{font-size:clamp(36px,5.6vw,62px);max-width:15ch}
h1 em{font-style:normal;color:var(--gold)}
.scramble{display:inline-block;min-width:4.5ch}
.lead{color:var(--muted);font-size:18.5px;max-width:58ch;margin-top:24px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:38px}

.trust{
  display:grid;grid-template-columns:repeat(4,1fr);gap:26px;
  margin-top:62px;padding-top:32px;border-top:1px solid var(--line);
}
@media(max-width:760px){.trust{grid-template-columns:1fr 1fr;gap:22px}}
.trust div{font-size:13px;color:var(--muted);line-height:1.5}
.trust strong{display:block;color:var(--txt);font-family:var(--serif);font-size:23px;margin-bottom:5px}

/* ---------- sections ---------- */
section{padding:96px 0;position:relative}
.alt{background:var(--bg-2);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.sec-head{max-width:66ch;margin-bottom:56px}
.sec-head h2{font-size:clamp(28px,3.7vw,42px)}
.sec-head p{color:var(--muted);margin-top:16px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
@media(max-width:880px){.split{grid-template-columns:1fr;gap:32px}}

/* ---------- cartes services ---------- */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
@media(max-width:960px){.grid3{grid-template-columns:1fr}}
.card{
  position:relative;background:var(--bg-2);border:1px solid var(--line);border-radius:3px;
  padding:36px 32px 34px;display:flex;flex-direction:column;overflow:hidden;
  transition:border-color .35s var(--ease),transform .35s var(--ease);
  text-decoration:none;color:inherit;
}
.card:before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
  transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease);
}
.card:hover{border-color:var(--gold-line);transform:translateY(-5px)}
.card:hover:before{transform:scaleX(1)}
.card.featured{border-color:var(--gold-line);background:linear-gradient(180deg,rgba(201,162,39,.055),var(--bg-2) 50%)}
.card .num{font-family:var(--mono);color:var(--gold);font-size:12px;letter-spacing:.2em;margin-bottom:16px}
.card h3{font-size:24px;margin:10px 0 12px}
.card > p{color:var(--muted);font-size:15px}
.card ul{list-style:none;margin-top:22px;font-size:14px;color:var(--muted)}
.card li{padding:8px 0 8px 21px;position:relative;border-top:1px solid var(--line-soft)}
.card li:before{content:"›";position:absolute;left:3px;top:8px;color:var(--gold)}
.legal-note{
  margin-top:auto;padding-top:22px;font-size:12.5px;color:var(--dim);line-height:1.58;
}
.legal-note span{display:block;border-left:2px solid var(--gold);padding-left:13px}
.card-link{margin-top:22px;font-size:13.5px;color:var(--gold);letter-spacing:.03em}

/* ---------- étapes ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:s}
@media(max-width:900px){.steps{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.step{border-top:2px solid var(--gold);padding-top:22px}
.step b{display:block;font-family:var(--serif);font-size:16px;margin-bottom:9px}
.step p{color:var(--muted);font-size:14px}

/* ---------- listes zone ---------- */
.zone-list{list-style:none;font-size:15px;color:var(--muted)}
.zone-list li{padding:14px 0;border-bottom:1px solid var(--line-soft);display:flex;justify-content:space-between;gap:20px}
.zone-list b{color:var(--txt);font-weight:500}
.zone-list span{font-size:13px;color:var(--dim);text-align:right}

/* ---------- FAQ ---------- */
details{border-bottom:1px solid var(--line);padding:24px 0}
summary{
  cursor:pointer;font-family:var(--serif);font-size:19px;list-style:none;
  display:flex;justify-content:space-between;gap:22px;align-items:flex-start;
  transition:color .2s;
}
summary:hover{color:var(--gold)}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";color:var(--gold);font-size:23px;line-height:1;flex-shrink:0}
details[open] summary:after{content:"–"}
details .answer{padding-top:14px}
details p{color:var(--muted);font-size:15px;max-width:80ch}
details p + p{margin-top:11px}

/* ---------- article / page contenu ---------- */
.page-head{
  padding:96px 0 66px;border-bottom:1px solid var(--line-soft);
  position:relative;overflow:hidden;min-height:52vh;display:flex;align-items:center;
}
.page-head h1{font-size:clamp(32px,4.6vw,50px);max-width:20ch}
.page-head .lead{margin-top:20px}
.page-head > .wrap-narrow,.page-head > .wrap{position:relative;z-index:2}
.head-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.page-head:after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(96deg,var(--bg) 0%,rgba(11,13,16,.93) 34%,rgba(11,13,16,.42) 68%,rgba(11,13,16,.10) 100%);
}
/* ------------------------------------------------------------
   MOBILE : l'animation sort de derrière le texte.
   Elle occupe une bande dédiée en haut de section, avec un
   fondu vers le bas. Plus aucun voile ne la recouvre, donc
   elle reste parfaitement lisible sur petit écran.
   ------------------------------------------------------------ */
@media(max-width:900px){

  .hero{display:block;min-height:auto;padding:0 0 74px}
  .hero:after{display:none}
  #fingerprint{
    position:relative;inset:auto;
    width:100%;height:300px;display:block;margin:0 0 18px;
    -webkit-mask-image:linear-gradient(180deg,#000 0%,#000 72%,rgba(0,0,0,.5) 89%,transparent 100%);
    mask-image:linear-gradient(180deg,#000 0%,#000 72%,rgba(0,0,0,.5) 89%,transparent 100%);
  }

  .page-head{display:block;min-height:auto;padding:0 0 52px}
  .page-head:after{display:none}
  .head-canvas{
    position:relative;inset:auto;
    width:100%;height:252px;display:block;margin:0 0 20px;
    -webkit-mask-image:linear-gradient(180deg,#000 0%,#000 72%,rgba(0,0,0,.5) 89%,transparent 100%);
    mask-image:linear-gradient(180deg,#000 0%,#000 72%,rgba(0,0,0,.5) 89%,transparent 100%);
  }

  .trust{margin-top:44px}
}

@media(max-width:560px){
  #fingerprint{height:252px}
  .head-canvas{height:214px}
}
.breadcrumb{font-size:12.5px;color:var(--dim);margin-bottom:20px}
.breadcrumb a{text-decoration:none;color:var(--dim)}
.breadcrumb a:hover{color:var(--gold)}

.prose{font-size:16.5px;color:#c8cdd5}
.prose h2{font-size:29px;margin:52px 0 18px;color:var(--txt)}
.prose h3{font-size:21px;margin:36px 0 12px;color:var(--txt)}
.prose p{margin-bottom:17px}
.prose ul,.prose ol{margin:0 0 20px 0;padding-left:0;list-style:none}
.prose ol{counter-reset:o}
.prose ul li{position:relative;padding:6px 0 6px 24px}
.prose ul li:before{content:"›";position:absolute;left:4px;color:var(--gold)}
.prose ol li{position:relative;padding:6px 0 6px 32px;counter-increment:o}
.prose ol li:before{content:counter(o,decimal-leading-zero);position:absolute;left:0;color:var(--gold);font-family:var(--mono);font-size:12px;top:9px}
.prose strong{color:var(--txt);font-weight:600}
.prose a{color:var(--gold)}
.callout{
  background:var(--bg-2);border:1px solid var(--line);border-left:2px solid var(--gold);
  padding:24px 26px;margin:32px 0;border-radius:2px;
}
.callout b{display:block;font-family:var(--serif);font-size:17px;margin-bottom:8px;color:var(--txt)}
.callout p{color:var(--muted);font-size:14.5px;margin:0}
.callout p + p{margin-top:9px}

table.tbl{width:100%;border-collapse:collapse;margin:28px 0;font-size:14.5px}
table.tbl th,table.tbl td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line)}
table.tbl th{color:var(--gold);font-weight:500;font-size:12px;letter-spacing:.14em;text-transform:uppercase}
table.tbl td{color:var(--muted)}
table.tbl td:first-child{color:var(--txt)}

/* ---------- tarifs ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:960px){.price-grid{grid-template-columns:1fr}}
.price{
  position:relative;overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);border-radius:3px;
  padding:34px 30px;display:flex;flex-direction:column;
  transition:border-color .35s var(--ease),transform .35s var(--ease);
}
.price:before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold),transparent);
  transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease);
}
.price:hover{border-color:var(--gold-line);transform:translateY(-5px)}
.price:hover:before{transform:scaleX(1)}
.price.featured{border-color:var(--gold-line)}
.price h3{font-size:21px;margin-bottom:6px}
.price .amount{font-family:var(--serif);font-size:34px;color:var(--gold);margin:14px 0 4px}
.price .unit{font-size:13px;color:var(--dim);margin-bottom:20px}
.price-sub{color:var(--muted);font-size:14px;text-wrap:balance}
.price ul{list-style:none;font-size:13.5px;color:var(--muted);margin-top:6px}
.price li{
  padding:9px 0 9px 17px;position:relative;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;align-items:baseline;gap:10px;
}
.price li:before{content:"›";position:absolute;left:2px;top:9px;color:var(--gold)}
.price li span{min-width:0}
.price li b{color:var(--txt);font-weight:500;white-space:nowrap;font-variant-numeric:tabular-nums}
.price .btn{margin-top:auto;padding-top:13px;justify-content:center}
.price ul{margin-bottom:26px}

/* ---------- formulaire ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px}
@media(max-width:880px){.contact-grid{grid-template-columns:1fr;gap:44px}}
form{display:flex;flex-direction:column;gap:16px}
label{font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
input,select,textarea{
  background:var(--bg-3);border:1px solid var(--line);color:var(--txt);
  padding:13px 15px;border-radius:2px;font-family:inherit;font-size:15px;width:100%;
  transition:border-color .25s;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--gold)}
textarea{min-height:130px;resize:vertical}
.field{display:flex;flex-direction:column;gap:8px}
.privacy{font-size:12.5px;color:var(--dim)}
.form-ok{display:none;color:var(--gold);font-size:14px;border:1px solid var(--gold-line);background:var(--gold-soft);padding:14px 16px;border-radius:2px}
.form-err{display:none;color:#e08d8d;font-size:14px;border:1px solid rgba(224,141,141,.32);background:rgba(224,141,141,.08);padding:14px 16px;border-radius:2px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* ---------- bandeau CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--bg-2),var(--bg-3));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:74px 0;text-align:center;
}
.cta-band h2{font-size:clamp(26px,3.4vw,36px);max-width:22ch;margin:0 auto}
.cta-band p{color:var(--muted);max-width:56ch;margin:16px auto 30px}

/* ---------- footer ---------- */
footer{padding:64px 0 40px;font-size:13.5px;color:var(--dim);border-top:1px solid var(--line-soft)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
@media(max-width:880px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr}}
.foot-grid h4{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);font-family:var(--sans);font-weight:500;margin-bottom:14px}
.foot-grid ul{list-style:none}
.foot-grid li{padding:5px 0}
.foot-grid a{text-decoration:none;transition:color .2s}
.foot-grid a:hover{color:var(--gold)}
.foot-bottom{margin-top:48px;padding-top:26px;border-top:1px solid var(--line-soft);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:12.5px}

/* ---------- animations de révélation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .85s var(--ease),transform .85s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal-d1{transition-delay:.09s}
.reveal-d2{transition-delay:.18s}
.reveal-d3{transition-delay:.27s}
.reveal-d4{transition-delay:.36s}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- barre de progression de lecture ---------- */
.progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--gold);z-index:100;transition:width .1s linear}