:root {
  --noir: #0a0a0a;
  --noir-clair: #141414;
  --noir-carte: #181818;
  --bordure: #2a2a2a;
  --texte: #ededed;
  --texte-att: #a8a8a8;
  --or: #c9a15a;
  --or-clair: #e0be82;
  --ok: #4caf7d;
  --erreur: #e0645a;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--noir);
  color: var(--texte);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

h1, h2, h3, .logo {
  font-family: "Fraunces", Georgia, "Times New Roman", serif;
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
}

p { margin: 0 0 1em; color: var(--texte-att); }

a { color: var(--or); text-decoration: none; }
a:hover { color: var(--or-clair); }

.conteneur {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
header.entete {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--bordure);
}

.entete .conteneur {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-size: 1.4rem;
  letter-spacing: 0.04em;
  color: var(--texte);
}
.logo span { color: var(--or); }

nav.nav-liens {
  display: flex;
  gap: 32px;
}
nav.nav-liens a {
  color: var(--texte-att);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}
nav.nav-liens a:hover { color: var(--texte); }
.nav-liens .btn {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 2px;
  border: 1px solid var(--or);
  color: var(--or);
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  transition: background 0.2s, color 0.2s;
  cursor: pointer;
  background: transparent;
}
.btn:hover { background: var(--or); color: var(--noir); }
.btn.plein {
  background: var(--or);
  color: var(--noir);
  border-color: var(--or);
}
.btn.plein:hover { background: var(--or-clair); border-color: var(--or-clair); }

.menu-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.menu-burger span {
  width: 22px; height: 2px;
  background: var(--texte);
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 76px;
  background:
    radial-gradient(ellipse at 75% 20%, rgba(201, 161, 90, 0.10), transparent 55%),
    var(--noir);
  position: relative;
}
.hero .conteneur {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}
.hero-etiquette {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--or);
  border: 1px solid var(--bordure);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  color: var(--texte);
}
.hero h1 em {
  font-style: normal;
  color: var(--or);
}
.hero p.intro {
  font-size: 1.15rem;
  max-width: 46ch;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
  align-items: flex-start;
}
.cta-groupe {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}
.cta-note {
  font-size: 0.85rem;
  color: var(--texte-att);
}
.hero-photo {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--bordure);
  aspect-ratio: 3 / 4;
}
.hero-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(100%) contrast(1.05);
}
.hero-photo::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(10,10,10,0.55) 100%);
}

/* --- Sections génériques --- */
section { padding: 110px 0; border-top: 1px solid var(--bordure); }
.section-tete { max-width: 640px; margin: 0 auto 56px; text-align: center; }
.section-etiquette {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--or);
  margin-bottom: 14px;
}
.section-tete h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); }

/* --- Approche (grille 4) --- */
.grille-approche {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.carte {
  background: var(--noir-carte);
  border: 1px solid var(--bordure);
  border-radius: 6px;
  padding: 32px 26px;
}
.carte .num {
  font-family: "Fraunces", serif;
  font-size: 1.6rem;
  color: var(--or);
  margin-bottom: 14px;
}
.carte h3 { font-size: 1.1rem; color: var(--texte); }
.carte p { font-size: 0.95rem; margin: 0; }

#demarrage .grille-approche {
  grid-template-columns: repeat(3, 1fr);
}

.approche-cta {
  text-align: center;
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

/* --- Comparatif face aux alternatives --- */
.comparatif {
  border: 1px solid var(--bordure);
  border-radius: 10px;
  overflow: hidden;
  background: var(--noir-carte);
}
.comparatif-entete, .comparatif-ligne {
  display: grid;
  grid-template-columns: 1.1fr 1.3fr 1.3fr;
}
.comparatif-entete {
  background: var(--noir-clair);
}
.comparatif-entete span {
  padding: 18px 22px;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--texte-att);
  font-weight: 500;
}
.comparatif-entete-actum {
  color: var(--or) !important;
  position: relative;
}
.comparatif-entete-actum::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--or);
  margin-right: 8px;
  vertical-align: middle;
}
.comparatif-ligne {
  border-top: 1px solid var(--bordure);
}
.comparatif-critere, .comparatif-actum, .comparatif-alt {
  padding: 20px 22px;
  font-size: 0.92rem;
}
.comparatif-critere {
  color: var(--texte-att);
  font-size: 0.82rem;
  display: flex;
  align-items: center;
}
.comparatif-actum {
  color: var(--texte);
  font-weight: 500;
  background: rgba(201, 161, 90, 0.07);
  border-left: 2px solid var(--or);
}
.comparatif-alt {
  color: var(--texte-att);
}
.secteurs-bloc { margin-top: 32px; }
.secteurs-label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--texte-att);
  margin-bottom: 14px;
}
.secteurs-liste {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.secteur-tag {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--or);
  border: 1px solid var(--bordure);
  padding: 6px 14px;
  border-radius: 999px;
}

/* --- Services --- */
.grille-services {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
#difference .grille-services {
  grid-template-columns: repeat(3, 1fr);
}

.service {
  display: flex;
  gap: 20px;
  background: var(--noir-carte);
  border: 1px solid var(--bordure);
  border-radius: 6px;
  padding: 28px;
}
.service .icone {
  flex: none;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid var(--or);
  display: flex; align-items: center; justify-content: center;
  color: var(--or);
}
.service h3 { font-size: 1.05rem; color: var(--texte); margin-bottom: 8px; }
.service p { font-size: 0.95rem; margin: 0; }

/* --- À propos --- */
.apropos .conteneur {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 60px;
  align-items: center;
}
.apropos-photo {
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--bordure);
}
.apropos-photo img {
  width: 100%; display: block;
  filter: grayscale(100%) contrast(1.05);
}
.apropos-texte h2 { font-size: clamp(1.6rem, 2.6vw, 2.1rem); }
.chiffres {
  display: flex;
  gap: 40px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.chiffre .valeur {
  font-family: "Fraunces", serif;
  font-size: 2rem;
  color: var(--or);
  display: block;
}
.chiffre .label {
  font-size: 0.85rem;
  color: var(--texte-att);
}

/* --- Discretion / valeurs --- */
.valeurs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.valeur-item { text-align: center; padding: 0 12px; }
.valeur-item h3 { font-size: 1.05rem; color: var(--texte); }
.valeur-item p { font-size: 0.92rem; }

/* --- Contact --- */
.contact .conteneur {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
}
.contact-infos h2 { font-size: clamp(1.6rem, 2.6vw, 2.1rem); }
.contact-cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  margin: 28px 0;
}
.form-alt-label {
  font-size: 0.85rem;
  color: var(--texte-att);
  margin: 0 0 16px;
}
.liste-contact { list-style: none; padding: 0; margin: 28px 0 0; }
.liste-contact li {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--bordure);
  color: var(--texte);
  font-size: 0.98rem;
}
.liste-contact li a { color: var(--texte); }
.liste-contact li a:hover { color: var(--or); }

form.formulaire {
  background: var(--noir-carte);
  border: 1px solid var(--bordure);
  border-radius: 6px;
  padding: 32px;
}
.champ { margin-bottom: 20px; }
.champ label {
  display: block;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--texte-att);
  margin-bottom: 8px;
}
.champ input, .champ textarea {
  width: 100%;
  background: var(--noir);
  border: 1px solid var(--bordure);
  border-radius: 4px;
  padding: 12px 14px;
  color: var(--texte);
  font-family: inherit;
  font-size: 0.98rem;
}
.champ input:focus, .champ textarea:focus {
  outline: none;
  border-color: var(--or);
}
.champ textarea { resize: vertical; min-height: 120px; }
.champ-site-web { position: absolute; left: -9999px; }

.formulaire .msg {
  margin-top: 16px;
  font-size: 0.92rem;
  border-radius: 4px;
  padding: 12px 14px;
  display: none;
}
.formulaire .msg.ok { display: block; color: var(--ok); border: 1px solid var(--ok); }
.formulaire .msg.erreur { display: block; color: var(--erreur); border: 1px solid var(--erreur); }

/* --- Footer --- */
footer {
  border-top: 1px solid var(--bordure);
  padding: 32px 0;
}
footer .conteneur {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
footer p { margin: 0; font-size: 0.85rem; }
footer .liens-bas a { margin-left: 20px; font-size: 0.85rem; color: var(--texte-att); }
footer .liens-bas a:hover { color: var(--or); }

/* --- Responsive --- */
@media (max-width: 860px) {
  nav.nav-liens { display: none; }
  .menu-burger { display: flex; }
  .hero .conteneur, .apropos .conteneur, .contact .conteneur {
    grid-template-columns: 1fr;
  }
  .hero-photo { order: -1; max-width: 320px; margin: 0 auto; }
  .grille-approche { grid-template-columns: repeat(2, 1fr); }
  #demarrage .grille-approche { grid-template-columns: 1fr; }
  .grille-services, #difference .grille-services { grid-template-columns: 1fr; }
  .valeurs { grid-template-columns: 1fr; }
  section { padding: 72px 0; }

  .comparatif-entete { display: none; }
  .comparatif-ligne { grid-template-columns: 1fr; border-top: none; border-bottom: 1px solid var(--bordure); }
  .comparatif-ligne:last-child { border-bottom: none; }
  .comparatif-critere {
    background: var(--noir-clair);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--texte);
    font-weight: 600;
    padding-bottom: 10px;
  }
  .comparatif-actum, .comparatif-alt { padding-top: 12px; padding-bottom: 12px; }
  .comparatif-actum::before, .comparatif-alt::before {
    display: block;
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 6px;
    font-weight: 600;
  }
  .comparatif-actum::before { content: "ACTUM"; color: var(--or); }
  .comparatif-alt::before { content: "Alternatives"; color: var(--texte-att); }
}

body.menu-ouvert .nav-mobile { display: flex; }
.nav-mobile {
  display: none;
  position: fixed;
  top: 76px; left: 0; right: 0;
  background: var(--noir-clair);
  border-bottom: 1px solid var(--bordure);
  flex-direction: column;
  padding: 20px 24px 28px;
  gap: 18px;
  z-index: 99;
}
.nav-mobile a { color: var(--texte); font-size: 1.05rem; }
.nav-mobile a.btn {
  display: inline-block;
  align-self: flex-start;
  color: var(--or);
  font-size: 0.95rem;
}