:root{
  --ink: #17233F; --ink-soft: #2B3A5C;
  --paper: #F6F4EF; --paper-alt: #EFEBE1;
  --ochre: #B9782E; --ochre-dark: #93601F;
  --line: rgba(23,35,63,0.12);
}
html{scroll-behavior:smooth;}
body{ background: var(--paper); color: var(--ink); font-family: 'IBM Plex Sans', sans-serif; font-size: 1.03rem; line-height: 1.6; }
h1, h2, h3, .brand{ font-family: 'Source Serif 4', serif; color: var(--ink); }
a{ color: var(--ochre-dark); }
a:hover{ color: var(--ochre); }

/* ---------- Header ---------- */
.site-header{ background: var(--paper); border-bottom: 1px solid var(--line); }
.brand-mark{
  width: 40px; height: 40px; border: 1.5px solid var(--ink);
  display:flex; align-items:center; justify-content:center;
  font-family:'Source Serif 4', serif; font-weight:600; font-size:0.95rem;
  color: var(--ink); flex-shrink:0; border-radius: 2px;
}
.brand-group{ display:flex; align-items:center; gap:0.75rem; text-decoration:none; }
.brand{ font-weight: 600; font-size: 1.1rem; letter-spacing: 0.01em; line-height:1.25; }
.brand-conseil{ color: var(--ochre-dark); }
.brand small{ display:block; font-family:'IBM Plex Sans', sans-serif; font-size: 0.68rem; font-weight: 500; color: var(--ochre-dark); letter-spacing: 0.06em; }
.nav-link{ color: var(--ink); font-weight: 500; font-size: 0.95rem; padding: 0.4rem 0.85rem !important; }
.nav-link:hover{ color: var(--ochre-dark); }
.nav-cta{ border: 1px solid var(--ink); border-radius: 2px; padding: 0.4rem 1rem !important; }
.nav-cta:hover{ background: var(--ink); color: var(--paper) !important; }

/* ---------- Hero (accueil) ---------- */
.hero{ padding: 4.5rem 0 4rem; border-bottom: 1px solid var(--line); overflow: hidden; }
.hero-kicker{ font-size: 0.85rem; color: var(--ochre-dark); font-weight: 600; margin-bottom: 0.9rem; }
.hero h1{ font-size: clamp(2.1rem, 4vw, 3.1rem); font-weight: 600; line-height: 1.15; max-width: 14ch; }
#slogan{ font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--ink-soft); max-width: 42ch; margin-top: 1.5rem; opacity: 0; }
.hero-actions{ margin-top: 2.2rem; }
.btn-primary-custom{ background: var(--ink); color: var(--paper); border: 1px solid var(--ink); border-radius: 2px; padding: 0.7rem 1.5rem; font-weight: 500; }
.btn-primary-custom:hover{ background: var(--ochre-dark); border-color: var(--ochre-dark); color: var(--paper); }
.btn-secondary-custom{ background: transparent; color: var(--ink); border: 1px solid var(--ink); border-radius: 2px; padding: 0.7rem 1.5rem; font-weight: 500; }
.btn-secondary-custom:hover{ border-color: var(--ochre-dark); color: var(--ochre-dark); }

/* Portrait (réutilisé accueil + qui-suis-je) */
.hero-portrait-col{ display:flex; flex-direction:column; align-items:center; gap: 1.1rem; }
.portrait-wrap{
  position: relative; width: 190px; height: 190px; border-radius: 50%;
  overflow: hidden; border: 1px solid var(--line); background: var(--paper-alt);
  box-shadow: 0 1px 0 var(--line);
}
.portrait-wrap.large{ width: 240px; height: 240px; }
.portrait-video{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
  opacity: 0; transition: opacity .5s ease;
}
.portrait-video.active{ opacity: 1; }
.portrait-caption{ font-size: 0.75rem; color: var(--ink-soft); text-align:center; max-width: 20ch; }

/* Rose des vents (symbole statique 4 dimensions) */
.compass{ width: 128px; height: 128px; }
.compass text{ font-family:'IBM Plex Sans', sans-serif; font-size: 7px; fill: var(--ink-soft); font-weight:600; letter-spacing:0.03em; }
.compass line{ stroke: var(--ochre-dark); stroke-width: 1; }
.compass circle.core{ fill: var(--paper); stroke: var(--ink); stroke-width: 1; }
.compass circle.dot{ fill: var(--ochre-dark); }

/* ---------- Sections génériques ---------- */
.section{ padding: 4.5rem 0; }
.section-title-row{ display:flex; align-items:baseline; justify-content:space-between; border-bottom: 1px solid var(--line); padding-bottom: 1rem; margin-bottom: 2.5rem; }
.section-title-row h2{ font-size: 1.7rem; font-weight: 600; margin: 0; }
.section-title-row .count{ font-size: 0.85rem; color: var(--ink-soft); }

.page-hero{ padding: 3.5rem 0 3rem; border-bottom: 1px solid var(--line); }
.page-hero .hero-kicker{ margin-bottom: 0.7rem; }
.page-hero h1{ font-size: clamp(1.9rem, 3.4vw, 2.6rem); font-weight:600; max-width: 22ch; }
.page-hero p.lead-text{ color: var(--ink-soft); max-width: 60ch; font-size: 1.05rem; margin-top: 1rem; }

.domain-card{ border-top: 2px solid var(--ink); padding-top: 1.2rem; height: 100%; }
.domain-card h3{ font-size: 1.15rem; font-weight: 600; margin-bottom: 0.7rem; }
.domain-card p{ color: var(--ink-soft); font-size: 0.95rem; margin-bottom: 1rem; }
.domain-card .link-arrow{ font-size: 0.9rem; font-weight: 500; text-decoration: none; border-bottom: 1px solid currentColor; padding-bottom: 1px; }

/* ---------- Scène animée (audit) ---------- */
.audit-scene{ background: var(--paper-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.scene-frame{ width:100%; height:auto; display:block; }
.scene-caption{ font-size:0.85rem; color:var(--ink-soft); text-align:center; margin-top:0.8rem; max-width:50ch; margin-left:auto; margin-right:auto; }

/* ---------- Approche 4 dimensions ---------- */
.approach{ background: var(--paper); }
.approach-item{ padding: 1.5rem 0; border-bottom: 1px solid var(--line); display:flex; gap: 1.3rem; align-items:flex-start; }
.approach-item:last-child{ border-bottom:none; }
.approach-item .icon{ flex:0 0 30px; color: var(--ochre-dark); margin-top: 2px; }
.approach-item .label{ flex: 0 0 150px; font-weight: 600; font-size: 0.95rem; color: var(--ink); }
.approach-item p{ margin:0; color: var(--ink-soft); font-size: 0.95rem; max-width: 60ch; }

.cta-final{ text-align:center; padding: 5rem 0; }
.cta-final h2{ font-size: 2rem; max-width: 22ch; margin: 0 auto 1.2rem; }
.cta-final p{ color: var(--ink-soft); max-width: 46ch; margin: 0 auto 2rem; }

/* ---------- Timeline (Qui suis-je) ---------- */
.timeline{ position:relative; padding-left: 1.6rem; border-left: 2px solid var(--line); }
.timeline-item{ position:relative; padding-bottom: 2rem; }
.timeline-item:last-child{ padding-bottom:0; }
.timeline-item::before{
  content:""; position:absolute; left:-1.86rem; top:0.3rem;
  width:10px; height:10px; border-radius:50%; background: var(--ochre-dark);
}
.timeline-item .period{ font-size:0.8rem; color: var(--ochre-dark); font-weight:600; letter-spacing:0.02em; }
.timeline-item h3{ font-size:1.05rem; font-weight:600; margin: 0.2rem 0 0.4rem; }
.timeline-item .org{ font-size:0.9rem; color: var(--ink-soft); font-style: italic; margin-bottom:0.4rem; }
.timeline-item p{ font-size:0.93rem; color: var(--ink-soft); margin:0; max-width: 62ch; }

/* ---------- Listes compétences / outils ---------- */
.skill-block h3{ font-size:1rem; font-weight:600; margin-bottom:0.8rem; border-bottom:1px solid var(--line); padding-bottom:0.5rem; }
.skill-tags{ display:flex; flex-wrap:wrap; gap:0.5rem; }
.skill-tag{ font-size:0.82rem; border:1px solid var(--line); border-radius: 2px; padding: 0.3rem 0.7rem; color: var(--ink-soft); background: var(--paper-alt); }

.engagement-list{ list-style:none; padding:0; margin:0; }
.engagement-list li{ padding: 0.9rem 0; border-bottom:1px solid var(--line); font-size:0.95rem; color: var(--ink-soft); }
.engagement-list li:last-child{ border-bottom:none; }
.engagement-list strong{ color: var(--ink); }

.social-links{ display:flex; flex-wrap:wrap; gap:0.8rem; margin-top:1.3rem; justify-content:center; }
.social-links a{
  border:1px solid var(--ink); border-radius:2px; padding:0.5rem 1.1rem;
  font-size:0.85rem; font-weight:500; text-decoration:none; color:var(--ink);
}
.social-links a:hover{ background:var(--ink); color:var(--paper); }

/* ---------- Footer ---------- */
footer{ background: var(--ink); color: #D9DCE6; padding: 3rem 0 1.5rem; font-size: 0.9rem; }
footer a{ color: #D9DCE6; }
footer a:hover{ color: var(--ochre); }
.footer-brand{ display:flex; align-items:center; gap:0.7rem; margin-bottom:0.9rem; }
.footer-brand .brand-mark{ border-color:#4A567A; color:#D9DCE6; }
.footer-brand .brand-conseil{ color: var(--ochre); }
footer h4{ font-family:'IBM Plex Sans', sans-serif; font-size: 0.78rem; letter-spacing: 0.03em; color: #97A0B8; margin:0; }
.footer-bottom{ border-top: 1px solid rgba(255,255,255,0.12); margin-top: 2.2rem; padding-top: 1.2rem; font-size: 0.8rem; color: #8891A8; }

@media (min-width: 768px){
  .footer-bottom{ padding-right: 4.2rem; }
}

/* ---------- Back to top ---------- */
#backToTop{
  position: fixed; right: 1.3rem; bottom: 1.3rem; width: 46px; height: 46px;
  border-radius: 2px; background: var(--ink); color: var(--paper); border: none;
  display:flex; align-items:center; justify-content:center;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s; z-index: 999;
}
#backToTop.visible{ opacity: 1; visibility: visible; transform: translateY(0); }
#backToTop:hover{ background: var(--ochre-dark); }

@media (max-width: 767px){
  .hero{ padding: 3.2rem 0 2.8rem; }
  .approach-item{ flex-direction:column; gap:0.5rem; }
  .approach-item .label{ flex:none; }
  #backToTop{ right: 1rem; bottom: 1rem; }
  .timeline{ padding-left: 1.2rem; }
}