/* Yam Institute and Service — feuille de style
   Mise en page : en-tête fixe, sections pleine largeur alternant sable / blanc,
   contenu centré sur 72rem. Les trois couleurs du cube codent les trois métiers. */
/* Thème unique sombre, assumé : autorité et contraste. */
:root{
  --bg:#16181D; --bg-alt:#1C1F26; --surface:#21252D; --line:#2E323B;
  --fg:#F5EFE6; --fg-soft:#C4BDB2; --fg-faint:#8F8A82;
  --ochre:#E2A23B; --terra:#C4552D; --terra-text:#E57A52; --anth:#F5EFE6;
  --accent:#E2A23B; --on-dark:#F5EFE6; --band:#E2A23B; --band-fg:#16181D;
  --grid:rgba(245,239,230,.045);
  --font:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Consolas,monospace;
  --wrap:76rem; --radius:4px;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);font-size:1.0625rem;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid var(--ochre);outline-offset:2px}
h1,h2,h3{line-height:1.15;text-wrap:balance;margin:0;letter-spacing:-.015em}
h1{font-size:clamp(2.6rem,6.5vw,5.2rem);font-weight:900;letter-spacing:-.035em;text-transform:uppercase;line-height:.95}
h2{font-size:clamp(1.8rem,3.6vw,2.9rem);font-weight:850;letter-spacing:-.025em}
h3{font-size:1.2rem;font-weight:700}
p{margin:0}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:clamp(16px,4vw,32px)}
.section{padding-block:clamp(3.5rem,8vw,6rem)}
.section.alt{background:var(--bg-alt)}
.stack{display:flex;flex-direction:column;gap:1rem}
.lead{font-size:1.2rem;color:var(--fg-soft);max-width:40rem}
.eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--terra-text)}
.muted{color:var(--fg-soft)}

/* Langue : on affiche uniquement la langue choisie */
:root:not([data-lang="en"]) [data-l="en"]{display:none!important}
:root[data-lang="en"] [data-l="fr"]{display:none!important}

/* En-tête */
.site-head{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.head-row{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:4.25rem}
.brand{display:flex;align-items:center;flex-shrink:0}
.brand img{height:2.6rem;width:auto}
.logo-light{display:none!important}
.logo-dark{display:block!important}
.nav{display:flex;align-items:center;gap:.25rem}
.nav a{color:var(--fg);text-decoration:none;font-weight:550;font-size:.95rem;padding:.5rem .75rem;border-radius:var(--radius)}
.nav a:hover{background:var(--bg-alt)}
.nav a[aria-current="page"]{color:var(--terra-text);box-shadow:inset 0 -2px 0 var(--terra)}
.lang{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;margin-left:.5rem}
.lang button{font:inherit;font-size:.8rem;font-weight:700;letter-spacing:.06em;padding:.35rem .7rem;border:0;background:transparent;color:var(--fg-soft);cursor:pointer}
.lang button[aria-pressed="true"]{background:var(--fg);color:var(--bg)}
.menu-btn{display:none;font:inherit;font-weight:600;border:1px solid var(--line);background:transparent;color:var(--fg);border-radius:var(--radius);padding:.45rem .8rem;cursor:pointer}
@media (max-width:860px){
  .menu-btn{display:inline-block}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;background:var(--bg);border-bottom:1px solid var(--line);padding:.75rem clamp(16px,4vw,32px) 1rem}
  .nav.open{display:flex}
  .nav a{padding:.75rem .5rem}
  .lang{align-self:flex-start;margin:.5rem 0 0}
}

/* Boutons */
.btn{display:inline-flex;align-items:center;gap:.5rem;font:inherit;font-weight:650;font-size:1rem;text-decoration:none;padding:.85rem 1.35rem;border-radius:var(--radius);border:2px solid transparent;cursor:pointer;transition:transform .15s ease,background .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:#B4491F;color:#FFFFFF}
.btn-primary:hover{background:#9E3F1A}
.btn-ghost{border-color:currentColor;color:var(--fg);background:transparent}
.actions{display:flex;flex-wrap:wrap;gap:.75rem}

/* Héros */
.hero{padding-block:clamp(3rem,7vw,5.5rem);background:var(--bg-alt);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.45fr .55fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.hero-grid>*{min-width:0}
.thesis{display:flex;flex-direction:column}
.thesis .w1{color:var(--ochre)}
.thesis .w2{color:var(--terra)}
.thesis .w3{color:var(--anth)}
.hero-cube{max-width:22rem;justify-self:center;width:100%}
.hero-cube img{width:100%}
.cube-legend{display:grid;gap:.4rem;margin-top:1.25rem;font-size:.9rem;color:var(--fg-soft)}
.cube-legend span{display:flex;align-items:center;gap:.6rem}
.sw{width:.85rem;height:.85rem;border-radius:2px;flex-shrink:0}
.sw.o{background:var(--ochre)}.sw.t{background:var(--terra)}.sw.a{background:var(--anth);outline:1px solid var(--line)}
@media (max-width:760px){.hero-grid{grid-template-columns:1fr}.hero-cube{max-width:13rem;justify-self:start}}

/* Page title band (pages internes) */
.page-head{background:var(--bg-alt);padding-block:clamp(2.75rem,6vw,4.5rem);border-bottom:1px solid var(--line)}
.page-head .stack{max-width:46rem}

/* Grilles */
.grid{display:grid;gap:clamp(1rem,2.5vw,1.5rem)}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:960px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}
.sec-head{display:flex;flex-direction:column;gap:.75rem;margin-bottom:clamp(2rem,4vw,3rem);max-width:44rem}

/* Pôles : la bande de couleur reprend la face du cube */
.pole{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.75rem;display:flex;flex-direction:column;gap:1rem;border-top:6px solid var(--c)}
.pole ul{margin:0;padding-left:1.1rem;color:var(--fg-soft);display:grid;gap:.35rem}
.pole .more{margin-top:auto;font-weight:650;text-decoration:none}
.c-o{--c:var(--ochre)}.c-t{--c:var(--terra)}.c-a{--c:#F5EFE6}

.point{display:flex;flex-direction:column;gap:.5rem}
.point h3{font-size:1.08rem}
.point p{color:var(--fg-soft);font-size:.98rem}
.point .k{font-family:var(--mono);font-size:.8rem;color:var(--terra-text);letter-spacing:.04em}

/* Clients */
.clients{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line)}
.clients>div{padding:1.25rem 1.25rem 1.25rem 0;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:.35rem;min-width:0}
.clients>div+div{padding-left:1.25rem;border-left:1px solid var(--line)}
.clients strong{font-size:1.02rem}
.clients span{color:var(--fg-soft);font-size:.93rem}
@media (max-width:860px){.clients{grid-template-columns:1fr 1fr}.clients>div:nth-child(3){padding-left:0;border-left:0}}
@media (max-width:520px){.clients{grid-template-columns:1fr}.clients>div,.clients>div+div{padding-left:0;border-left:0}}

/* Démarche en 3 temps */
.steps3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;counter-reset:s}
.steps3>div{padding:1.5rem 1.5rem 1.5rem 0;display:flex;flex-direction:column;gap:.5rem;border-top:3px solid var(--fg)}
.steps3>div+div{padding-left:1.5rem}
.steps3 .n{font-family:var(--mono);font-size:.85rem;color:var(--terra-text)}
@media (max-width:700px){.steps3{grid-template-columns:1fr}.steps3>div+div{padding-left:0}}

/* Tableau de process */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:40rem;font-size:.95rem}
th,td{text-align:left;padding:.85rem 1rem;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-faint);font-weight:700;background:var(--bg-alt)}
tr:last-child td{border-bottom:0}
td.num{font-family:var(--mono);color:var(--terra-text);white-space:nowrap;width:3rem}
td.delay{font-family:var(--mono);font-size:.85rem;white-space:nowrap;color:var(--fg-soft)}

/* Catalogue */
.course{display:grid;grid-template-columns:3rem 1fr auto;gap:1rem 1.25rem;align-items:baseline;padding:1.35rem 0;border-bottom:1px solid var(--line)}
.course:first-child{border-top:1px solid var(--line)}
.course .n{font-family:var(--mono);color:var(--terra-text);font-size:.9rem}
.course h3{font-size:1.12rem}
.course p{color:var(--fg-soft);font-size:.95rem;margin-top:.25rem}
.course .dur{font-family:var(--mono);font-size:.85rem;white-space:nowrap;background:var(--bg-alt);padding:.25rem .6rem;border-radius:999px}
@media (max-width:560px){.course{grid-template-columns:2.2rem 1fr}.course .dur{grid-column:2;justify-self:start}}

.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.75rem;display:flex;flex-direction:column;gap:.75rem}
.panel ul{margin:0;padding-left:1.1rem;color:var(--fg-soft);display:grid;gap:.35rem}
.tag{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--terra-text)}

/* Bande CTA */
.cta{background:var(--band);color:var(--band-fg)}
.cta .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1.5rem}
.cta h2{color:var(--band-fg);max-width:34rem}
.cta p{color:#3A3022;margin-top:.5rem;font-weight:500}
.cta .btn-ghost{color:var(--band-fg)}

/* À propos */
.bio{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(2rem,5vw,4rem);align-items:start}
.bio>*{min-width:0}
.monogram{aspect-ratio:1;max-width:18rem;width:100%;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);display:grid;place-items:center}
.monogram img{width:55%}
.creds{list-style:none;margin:0;padding:0;display:grid;gap:0;border-top:1px solid var(--line)}
.creds li{display:grid;grid-template-columns:1fr auto;gap:1rem;padding:.8rem 0;border-bottom:1px solid var(--line)}
.creds .y{font-family:var(--mono);font-size:.85rem;color:var(--fg-faint)}
.creds small{display:block;color:var(--fg-soft);font-size:.88rem}
@media (max-width:760px){.bio{grid-template-columns:1fr}.monogram{max-width:11rem}}
.meaning{font-size:clamp(1.3rem,2.6vw,1.75rem);font-weight:600;line-height:1.35;max-width:44rem}
.meaning em{font-style:normal;color:var(--terra-text)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(2rem,5vw,3.5rem);align-items:start}
.contact-grid>*{min-width:0}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr}}
.coord{display:grid;gap:0;border-top:1px solid var(--line)}
.coord>div{display:flex;flex-direction:column;gap:.2rem;padding:1rem 0;border-bottom:1px solid var(--line)}
.coord .lbl{font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-faint)}
.coord .val{font-size:1.15rem;font-weight:600;display:flex;flex-wrap:wrap;align-items:center;gap:.6rem;word-break:break-word}
.copy{font:inherit;font-size:.78rem;font-weight:650;border:1px solid var(--line);background:transparent;color:var(--fg-soft);padding:.2rem .6rem;border-radius:999px;cursor:pointer}
form{display:grid;gap:1rem}
.field{display:flex;flex-direction:column;gap:.35rem}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
@media (max-width:560px){.row2{grid-template-columns:1fr}}
label{font-size:.9rem;font-weight:600}
input,select,textarea{font:inherit;font-size:1rem;color:var(--fg);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:.75rem .85rem;width:100%}
textarea{min-height:8rem;resize:vertical}
.form-note{font-size:.88rem;color:var(--fg-soft)}
.form-out{display:none;flex-direction:column;gap:.75rem;padding:1.25rem;border:1px solid var(--line);border-radius:var(--radius);background:var(--bg-alt)}
.form-out.show{display:flex}

/* Pied de page */
.site-foot{background:#0F1014;color:#C9C2B7;padding-block:3rem 2rem;font-size:.92rem}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:2rem}
.foot-grid>*{min-width:0}
.site-foot img{height:2.4rem;width:auto}
.site-foot a{color:#F5EFE6;text-decoration:none}
.site-foot a:hover{text-decoration:underline}
.site-foot h4{margin:0 0 .6rem;font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ochre)}
.site-foot ul{list-style:none;margin:0;padding:0;display:grid;gap:.35rem}
.foot-legal{margin-top:2.5rem;padding-top:1.25rem;border-top:1px solid #343842;display:flex;flex-wrap:wrap;justify-content:space-between;gap:.75rem;font-size:.82rem;color:#8F8A82}
.tricolor{display:flex;height:4px}.tricolor i{flex:1}.tricolor i:nth-child(1){background:var(--ochre)}.tricolor i:nth-child(2){background:var(--terra)}.tricolor i:nth-child(3){background:#3A3E48}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr}}

/* ——— Autorité : grille de relevé, typographie géante, entrée du cube ——— */
.hero,.page-head{background-color:var(--bg);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:56px 56px;border-bottom:1px solid var(--line)}
.hero{padding-block:clamp(3.5rem,8vw,7rem)}
.thesis{font-size:clamp(2.8rem,8vw,6.6rem);line-height:.9;letter-spacing:-.045em}
.hero .lead{color:var(--fg-soft)}
.hero-cube{max-width:30rem}
.hero-cube svg{width:100%;height:auto;display:block;overflow:visible}
.hero-cube .f{animation:face .9s cubic-bezier(.2,.7,.2,1) both}
.hero-cube .f1{--dx:0;--dy:-26px;animation-delay:.05s}
.hero-cube .f2{--dx:24px;--dy:14px;animation-delay:.2s}
.hero-cube .f3{--dx:-24px;--dy:14px;animation-delay:.35s}
@keyframes face{from{opacity:0;transform:translate(var(--dx),var(--dy))}to{opacity:1;transform:none}}
.facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-alt)}
.facts>div{padding:1.6rem clamp(1rem,2vw,1.6rem);display:flex;flex-direction:column;gap:.35rem;min-width:0}
.facts>div+div{border-left:1px solid var(--line)}
.facts b{font-size:clamp(2rem,4vw,3.2rem);font-weight:900;letter-spacing:-.04em;line-height:1;color:var(--ochre);font-variant-numeric:tabular-nums}
.facts span{font-size:.9rem;color:var(--fg-soft)}
@media (max-width:760px){.facts{grid-template-columns:1fr 1fr}.facts>div:nth-child(3){border-left:0}.facts>div:nth-child(n+3){border-top:1px solid var(--line)}}
.eyebrow{color:var(--ochre);letter-spacing:.2em}
.section.alt{background:var(--bg-alt)}
.pole{background:var(--surface)}
.btn-ghost{color:var(--fg)}
.cta .btn-primary{background:#16181D;color:#F5EFE6}
.cta .btn-primary:hover{background:#000}
.cta .btn-ghost{color:#16181D}
.steps3>div{border-top-color:var(--ochre)}
.course .dur{background:var(--surface)}
.site-head{background:color-mix(in srgb,#16181D 88%,transparent)}
@media (max-width:760px){.hero-cube{max-width:14rem}}

/* ——— Adaptation mobile automatique ——— */
.mbar{display:none}
@media (max-width:700px){
  /* Tableau du processus d'audit : une fiche par étape au lieu d'un tableau à faire défiler */
  .table-wrap{overflow:visible;border:0;background:transparent}
  .table-wrap table{min-width:0;font-size:.95rem}
  .table-wrap thead{display:none}
  .table-wrap tbody{display:grid;gap:.75rem}
  .table-wrap tr{display:grid;grid-template-columns:2.2rem 1fr 1fr;gap:.35rem .5rem;padding:1rem;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--ochre);border-radius:var(--radius)}
  .table-wrap td{display:block;border:0;padding:0;grid-column:2 / 4}
  .table-wrap td.delay{grid-column:2}
  .table-wrap td:last-child{grid-column:3}
  .table-wrap td.num{grid-column:1;grid-row:1 / span 3;font-size:1.1rem;font-weight:600}
  .table-wrap td.step{font-size:1.05rem}
  .table-wrap td[data-fr]::before{content:attr(data-fr);display:block;font-family:var(--font);font-size:.68rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--fg-faint);margin-top:.35rem}
  :root[data-lang="en"] .table-wrap td[data-fr]::before{content:attr(data-en)}
  /* Barre d'actions fixe en bas de l'écran */
  .mbar{display:grid;grid-template-columns:1fr 1.4fr;gap:.6rem;position:fixed;left:0;right:0;bottom:0;z-index:30;padding:.65rem 16px calc(.65rem + env(safe-area-inset-bottom,0px));background:rgba(15,16,20,.96);backdrop-filter:blur(8px);border-top:1px solid var(--line)}
  .mbar .btn{justify-content:center;padding:.8rem 1rem}
  body{padding-bottom:calc(4.6rem + env(safe-area-inset-bottom,0px))}
  /* Cibles tactiles confortables, textes un peu plus compacts */
  .nav a{font-size:1.05rem;padding:.9rem .5rem;border-bottom:1px solid var(--line)}
  .nav a[aria-current="page"]{box-shadow:none}
  .lang button{padding:.6rem 1rem;font-size:.9rem}
  .actions .btn{flex:1 1 12rem;justify-content:center}
  .section{padding-block:3rem}
  .lead{font-size:1.05rem}
  .pole,.panel{padding:1.35rem}
  .coord .val{font-size:1.05rem}
}