:root {
    --stone:    #C8BEB0;
    --stone-lt: #F0EBE3;
    --stone-dk: #7A6F64;
    --bark:     #3B2F27;
    --bark-lt:  #5C4A3D;
    --moss:     #6B7B5E;
    --cream:    #FAF7F2;
    --ink:      #1C1612;
    --serif:    'Cormorant Garamond', Georgia, serif;
    --sans:     'DM Sans', system-ui, sans-serif;
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    width: 100%;
  }
  
  
  body {
    background: var(--cream);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    width: 100%;
    position: relative;
  }

  /* ─── NAV ─── */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    background: rgba(250,247,242,0.9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s;
  }
  nav.scrolled { border-bottom-color: var(--stone); }

  .nav-logo {
    font-family: var(--sans);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink);
    text-decoration: none;
  }
  .nav-logo span { color: var(--stone-dk); }

  .nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
  }
  .nav-links a {
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 0.04em;
    color: var(--bark-lt);
    text-decoration: none;
    transition: color 0.2s;
  }
  .nav-links a:hover { color: var(--ink); }

  /* ─── MOBILE MENU TOGGLE ─── */
  .nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 26px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
  }
  .nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav-links-mobile {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(78vw, 320px);
    background: var(--cream);
    box-shadow: -8px 0 30px rgba(0,0,0,0.12);
    list-style: none;
    flex-direction: column;
    padding: 7rem 2.5rem 2rem;
    gap: 2rem;
    transform: translateX(100%);
    transition: transform 0.35s ease;
    z-index: 150;
  }
  .nav-links-mobile.open {
    transform: translateX(0);
  }
  .nav-links-mobile a {
    font-family: var(--sans);
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink);
    text-decoration: none;
    border-bottom: 1px solid var(--stone);
    padding-bottom: 0.75rem;
  }

  .nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(20,15,10,0.35);
    z-index: 140;
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  .nav-overlay.open {
    opacity: 1;
  }

  /* ─── HERO ─── */
  .hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: end;
    padding: 0;
    overflow: hidden;
    position: relative;
  }

  .hero-left {
    padding: 12rem 3rem 6rem 3rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 2rem;
    position: relative;
    z-index: 2;
  }

  .hero-logo-mobile {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 85%;
    max-width: 420px;
    height: auto;
    opacity: 0.12;
    z-index: 1;
    pointer-events: none;
  }

  .hero-eyebrow {
    font-family: var(--sans);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--stone-dk);
  }

  .hero-title {
    font-family: var(--serif);
    font-size: clamp(3.2rem, 6vw, 5.5rem);
    font-weight: 300;
    line-height: 1.05;
    letter-spacing: -0.01em;
    color: var(--ink);
  }
  .hero-title em {
    font-style: italic;
    color: var(--bark-lt);
  }

  /* Texte réel pour le SEO/l'accessibilité, invisible visuellement pour ne pas changer le design */
  .visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .hero-subtitle {
    font-family: var(--serif);
    font-size: clamp(1.1rem, 2vw, 1.45rem);
    font-weight: 300;
    font-style: italic;
    color: var(--bark-lt);
    margin-top: -0.5rem;
  }

  .hero-desc {
    font-size: 15px;
    line-height: 1.7;
    color: var(--bark-lt);
    max-width: 380px;
    font-weight: 300;
  }

  .hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.9rem 2rem;
    background: var(--bark);
    color: var(--cream);
    font-family: var(--sans);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-decoration: none;
    transition: background 0.2s;
    align-self: flex-start;
  }
  .hero-cta:hover { background: var(--bark-lt); }
  .hero-cta svg { transition: transform 0.2s; }
  .hero-cta:hover svg { transform: translateX(4px); }

  /* Signature: the textured stone column on the right */
  .hero-right {
    position: relative;
    height: 100vh;
    background: var(--stone-lt);
    overflow: hidden;
  }

  .hero-right::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
      repeating-linear-gradient(
        90deg,
        transparent,
        transparent 2px,
        rgba(120,100,80,0.04) 2px,
        rgba(120,100,80,0.04) 3px
      ),
      repeating-linear-gradient(
        0deg,
        transparent,
        transparent 18px,
        rgba(120,100,80,0.03) 18px,
        rgba(120,100,80,0.03) 19px
      );
  }

  /* Large rotated quote — the signature element */
  .hero-stone-text {
    position: absolute;
    bottom: 8rem;
    left: 50%;
    transform: translateX(-50%) rotate(-90deg);
    transform-origin: center center;
    white-space: nowrap;
    font-family: var(--serif);
    font-size: 11px;
    font-weight: 300;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--stone-dk);
    opacity: 0.7;
  }

  .hero-accent-line {
    position: absolute;
    top: 0; bottom: 0;
    left: 0;
    width: 4px;
    background: var(--stone);
  }

  .hero-large-num {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--serif);
    font-size: 22vw;
    font-weight: 300;
    color: var(--stone);
    opacity: 0.18;
    user-select: none;
    line-height: 1;
    letter-spacing: -0.04em;
  }

  .hero-location {
    position: absolute;
    bottom: 2.5rem;
    right: 2.5rem;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--stone-dk);
  }

  /* ─── SECTION SHARED ─── */
  section { padding: 7rem 3rem; }

  .section-label {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--moss);
    margin-bottom: 1.2rem;
  }

  .section-title {
    font-family: var(--serif);
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 300;
    line-height: 1.15;
    color: var(--ink);
    margin-bottom: 1.5rem;
  }
  .section-title em { font-style: italic; color: var(--bark-lt); }

  /* ─── PROJET ─── */
  .projet {
    background: var(--stone-lt);
    border-top: 1px solid var(--stone);
  }

  .projet-inner {
    max-width: 1200px;
    margin: 0 auto;
  }

  .projet-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: end;
    margin-bottom: 4rem;
  }

  .projet-intro {
    font-size: 15px;
    line-height: 1.8;
    color: var(--bark-lt);
    font-weight: 300;
    max-width: 440px;
  }

  .projet-meta {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-self: end;
  }

  .meta-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--stone);
    font-size: 13px;
  }
  .meta-row dt { color: var(--stone-dk); letter-spacing: 0.06em; }
  .meta-row dd { color: var(--ink); font-weight: 500; }

  /* Photo mosaic with CSS art (placeholder) */
  .projet-gallery {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 300px 240px;
    gap: 6px;
  }

  .gallery-item {
    overflow: hidden;
    position: relative;
  }
  .gallery-item:first-child { grid-row: 1 / 3; }

  .gallery-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--stone-dk);
    transition: transform 0.5s ease;
    position: relative;
    overflow: hidden;
  }

  .gallery-item:hover .gallery-placeholder { transform: scale(1.03); }

  /* Warm textured fills simulating material palettes */
  .g1 { background: linear-gradient(145deg, #D9CFC4 0%, #C2B5A6 50%, #B0A395 100%); }
  .g2 { background: linear-gradient(135deg, #E8E0D5 0%, #D4C8BC 100%); }
  .g3 { background: linear-gradient(160deg, #C5BDB2 0%, #A89B8E 100%); }
  .g4 { background: linear-gradient(120deg, #DDD4C9 0%, #C9BDB1 100%); }
  .g5 { background: linear-gradient(150deg, #BFB6AB 0%, #AB9F93 100%); }

  .gallery-caption {
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    font-size: 11px;
    color: rgba(60,40,30,0.7);
    letter-spacing: 0.1em;
  }

  /* ─── SERVICES ─── */
  .services {
    max-width: 1200px;
    margin: 0 auto;
  }

  .services-grid {
    margin-top: 3rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border: 1px solid var(--stone);
  }

  .service-item {
    padding: 2.5rem 2rem;
    border-right: 1px solid var(--stone);
    position: relative;
    transition: background 0.2s;
  }
  .service-item:last-child { border-right: none; }
  .service-item:hover { background: var(--stone-lt); }

  .service-num {
    font-family: var(--serif);
    font-size: 3rem;
    font-weight: 300;
    color: var(--stone);
    line-height: 1;
    margin-bottom: 1.2rem;
  }

  .service-name {
    font-family: var(--serif);
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--ink);
    margin-bottom: 0.75rem;
    line-height: 1.2;
  }

  .service-desc {
    font-size: 13.5px;
    line-height: 1.7;
    color: var(--bark-lt);
    font-weight: 300;
  }

  .service-badge {
    display: inline-block;
    margin-top: 1.2rem;
    padding: 3px 10px;
    border: 1px solid var(--stone);
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--stone-dk);
    border-radius: 2px;
  }

  .service-link {
    display: inline-block;
    margin-top: 1.2rem;
    font-family: var(--sans);
    font-size: 12.5px;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--bark);
    text-decoration: none;
    border-bottom: 1px solid var(--stone);
    padding-bottom: 2px;
    transition: border-color 0.2s, color 0.2s;
  }
  .service-link:hover {
    color: var(--bark-lt);
    border-bottom-color: var(--bark-lt);
  }

  /* ─── PAGE DE SERVICE DÉDIÉE (maitrise-doeuvre.html, etc.) ─── */
  .service-hero {
    padding: 10rem 3rem 4rem;
    max-width: 1000px;
    margin: 0 auto;
  }
  .breadcrumb {
    font-size: 12px;
    color: var(--stone-dk);
    margin-bottom: 2rem;
  }
  .breadcrumb a { color: var(--stone-dk); text-decoration: none; border-bottom: 1px solid var(--stone); }
  .breadcrumb a:hover { color: var(--ink); }

  .service-page-section {
    max-width: 900px;
    margin: 0 auto;
  }
  .service-page-section + .service-page-section {
    border-top: 1px solid var(--stone);
  }

  .service-lede {
    font-family: var(--serif);
    font-size: clamp(1.1rem, 1.6vw, 1.35rem);
    font-weight: 300;
    line-height: 1.8;
    color: var(--ink);
    max-width: 640px;
  }

  .service-body p {
    font-size: 15px;
    line-height: 1.85;
    color: var(--bark-lt);
    font-weight: 300;
    max-width: 680px;
    margin-bottom: 1.2rem;
  }

  .service-body a,
  .faq-a a {
    color: var(--ink);
    text-decoration: none;
    border-bottom: 1px solid var(--stone);
    transition: border-color 0.2s;
  }
  .service-body a:hover,
  .faq-a a:hover {
    border-bottom-color: var(--ink);
  }

  .service-checklist {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem 2.5rem;
    margin-top: 2rem;
  }
  .service-checklist li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 14px;
    color: var(--ink);
    line-height: 1.5;
  }
  .service-checklist li::before {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    margin-top: 0.4rem;
    background: var(--moss);
    flex-shrink: 0;
    border-radius: 50%;
  }

  .faq-item {
    border-bottom: 1px solid var(--stone);
    padding: 1.75rem 0;
  }
  .faq-item:last-child { border-bottom: none; }
  .faq-q {
    font-family: var(--serif);
    font-size: 1.15rem;
    font-weight: 400;
    color: var(--ink);
    margin-bottom: 0.6rem;
  }
  .faq-a {
    font-size: 14px;
    line-height: 1.8;
    color: var(--bark-lt);
    font-weight: 300;
    max-width: 680px;
  }

  .service-cta-band {
    background: var(--bark);
    color: var(--cream);
    padding: 4.5rem 3rem;
    text-align: center;
  }
  .service-cta-band .section-title { color: var(--cream); justify-content: center; }
  .service-cta-band p {
    font-size: 15px;
    color: rgba(250,247,242,0.72);
    max-width: 520px;
    margin: 0 auto 2rem;
    font-weight: 300;
  }

  @media (max-width: 900px) {
    .service-hero { padding: 8rem 1.5rem 3rem; }
    .service-checklist { grid-template-columns: 1fr; }
    .service-cta-band { padding: 3.5rem 1.5rem; }
  }

  /* ─── PARTENARIAT ─── */
  .partenariat {
    background: var(--bark);
    color: var(--cream);
    padding: 6rem 3rem;
  }

  .partenariat-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
  }

  .partenariat .section-label { color: var(--stone); }
  .partenariat .section-title { color: var(--cream); }

  .partenariat-body {
    font-size: 15px;
    line-height: 1.8;
    color: rgba(250,247,242,0.72);
    font-weight: 300;
  }

  .partenariat-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
  }

  .partenariat-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    font-size: 14px;
    color: rgba(250,247,242,0.85);
    line-height: 1.5;
  }

  .partenariat-list li::before {
    content: '';
    display: block;
    width: 20px;
    height: 1px;
    background: var(--stone);
    margin-top: 0.6rem;
    flex-shrink: 0;
  }

  .partenariat-visual {
    display: flex;
    flex-direction: column;
    gap: 1px;
  }

  .pv-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid rgba(200,190,176,0.15);
  }

  .pv-step {
    font-family: var(--serif);
    font-size: 2.2rem;
    font-weight: 300;
    color: var(--stone);
    opacity: 0.5;
    min-width: 2rem;
    line-height: 1;
  }

  .pv-label {
    font-size: 14px;
    color: rgba(250,247,242,0.85);
    font-weight: 400;
  }
  .pv-sub {
    font-size: 12px;
    color: rgba(250,247,242,0.4);
    margin-top: 2px;
    font-weight: 300;
  }

  /* ─── VALEURS ─── */
  .valeurs-section {
    max-width: 1200px;
    margin: 0 auto;
  }

  .valeurs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    margin-top: 3.5rem;
  }

  .valeur-item {}
  .valeur-title {
    font-family: var(--serif);
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--ink);
    margin-bottom: 0.5rem;
  }
  .valeur-desc {
    font-size: 14px;
    line-height: 1.75;
    color: var(--bark-lt);
    font-weight: 300;
  }

  .valeurs-divider {
    width: 100%;
    height: 1px;
    background: var(--stone);
    margin: 3rem 0;
    grid-column: 1 / -1;
  }

  /* ─── À PROPOS ─── */
  .apropos {
    background: var(--cream);
    border-top: 1px solid var(--stone);
  }
  .apropos-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 7rem 3rem;
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 5rem;
    align-items: center;
  }
  .apropos-photo-wrap {
    position: relative;
  }
  .apropos-photo {
    width: 100%;
    max-width: 380px;
    aspect-ratio: 3/4;
    object-fit: cover;
    object-position: center top;
    display: block;
    filter: grayscale(8%);
  }
  .apropos-photo-accent {
    display: none;
  }
  .apropos-photo-wrap img { position: relative; z-index: 1; }
  .apropos-content {}
  .apropos-name {
    font-family: var(--serif);
    font-size: clamp(1.8rem, 2.5vw, 2.6rem);
    font-weight: 300;
    color: var(--ink);
    line-height: 1.15;
    margin-bottom: 0.3rem;
  }
  .apropos-titre {
    font-family: var(--sans);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--bark-lt);
    margin-bottom: 2.5rem;
  }
  .apropos-bio {
    font-family: var(--serif);
    font-size: clamp(1.05rem, 1.4vw, 1.2rem);
    font-weight: 300;
    line-height: 1.8;
    color: var(--ink);
    margin-bottom: 2.5rem;
  }
  .apropos-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
  }
  .apropos-tag {
    font-family: var(--sans);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--bark);
    border: 1px solid var(--bark);
    padding: 0.35rem 0.9rem;
  }

    /* ─── CONTACT ─── */
  .contact {
    background: var(--stone-lt);
    border-top: 1px solid var(--stone);
  }

  .contact-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 7rem 3rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: start;
  }

  .contact-left {}

  .contact-body {
    font-size: 15px;
    line-height: 1.8;
    color: var(--bark-lt);
    font-weight: 300;
    max-width: 400px;
    margin-bottom: 2.5rem;
  }

  .contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .contact-row {
    display: flex;
    gap: 1rem;
    align-items: baseline;
    font-size: 14px;
  }
  .contact-row dt {
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--stone-dk);
    min-width: 70px;
  }
  .contact-row dd { color: var(--ink); }
  .contact-row a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--stone); transition: border-color 0.2s; }
  .contact-row a:hover { border-bottom-color: var(--ink); }

  .social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
  }
  .social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--bark-lt);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid var(--stone);
    transition: background 0.2s, color 0.2s;
  }
  .social-link:hover { background: var(--bark); color: var(--cream); border-color: var(--bark); }

  /* Contact form */
  .contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
  }

  .form-group label {
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--stone-dk);
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    width: 100%;
    box-sizing: border-box;
    background: var(--cream);
    border: 1px solid var(--stone);
    padding: 0.75rem 1rem;
    font-family: var(--sans);
    font-size: 16px;
    color: var(--ink);
    outline: none;
    transition: border-color 0.2s;
    appearance: none;
    -webkit-appearance: none;
    border-radius: 0;
  }

  .form-group input:focus,
  .form-group select:focus,
  .form-group textarea:focus {
    border-color: var(--bark);
  }

  .form-group textarea { resize: vertical; min-height: 120px; }

  .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

  .form-submit {
    margin-top: 0.5rem;
    padding: 0.9rem 2rem;
    background: var(--bark);
    color: var(--cream);
    border: none;
    font-family: var(--sans);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: background 0.2s;
    text-transform: uppercase;
    align-self: flex-start;
  }
  .form-submit:hover { background: var(--bark-lt); }

  /* ─── FOOTER ─── */
  footer {
    padding: 2.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--stone);
    background: var(--cream);
  }

  .footer-logo {
    font-family: var(--sans);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--stone-dk);
  }
  .footer-logo span { color: var(--stone); }

  .footer-copy {
    font-size: 12px;
    color: var(--stone-dk);
  }

  /* ─── SCROLL ANIMATION ─── */
  .reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  html.js-reveal .reveal {
    opacity: 0;
    transform: translateY(24px);
  }
  html.js-reveal .reveal.visible {
    opacity: 1;
    transform: none;
  }

  /* ─── RESPONSIVE ─── */
  @media (max-width: 900px) {
    nav { padding: 1.2rem 1.5rem; }
    .nav-links { display: none; }
    .nav-toggle { display: flex; }
    .nav-links-mobile { display: flex; }
    .hero { grid-template-columns: 1fr; min-height: 100svh; }
    .hero-right { display: none; }
    .hero-logo-mobile { display: block; }
    .hero-left { padding: 9rem 1.5rem 4rem; }
    section { padding: 4.5rem 1.5rem; }
    .projet-header { grid-template-columns: 1fr; gap: 2rem; }
    .projet-gallery { grid-template-columns: 1fr 1fr; grid-template-rows: 220px 180px 180px; }
    .gallery-item:first-child { grid-row: auto; grid-column: 1 / -1; }
    .services-grid { grid-template-columns: 1fr; }
    .service-item { border-right: none; border-bottom: 1px solid var(--stone); }
    .partenariat { padding: 4.5rem 1.5rem; }
    .apropos-inner { grid-template-columns: 1fr; gap: 3rem; padding: 4.5rem 1.5rem; }
    .apropos-photo { max-width: 100%; }
    .apropos-photo-accent { display: none; }

    .partenariat-inner { grid-template-columns: 1fr; gap: 3rem; }
    .contact-inner { grid-template-columns: 1fr; gap: 3rem; padding: 4.5rem 1.5rem; }
    .form-row { grid-template-columns: 1fr; }
    .valeurs-grid { grid-template-columns: 1fr; gap: 2rem; }
    footer { flex-direction: column; gap: 1rem; text-align: center; }
  }

  @media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    * { transition-duration: 0.01ms !important; }
  }