:root {
    --navy: #293152;
    --navy-700: #1c2240;
    --cream: #ffffff;
    --paper: #ffffff;
    --ink: #14171c;
    --muted: #6b6b6b;
    --rule: #e5e5e5;
    --accent: #c8472e;
    --maxw: 1280px;
  }
  *,*::before,*::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  html,body { margin:0; padding:0; }
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
  }
  body {
    font-family: 'Montserrat', Arial, Helvetica, sans-serif;
    color: var(--ink);
    background: var(--cream);
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
    font-size: 16px;
  }
  img { max-width: 100%; display: block; }
  a { color: inherit; text-decoration: none; }

  h1,h2,h3,h4 {
    font-family: 'Anton', 'Impact', sans-serif;
    font-weight: 400;
    color: var(--navy);
    letter-spacing: .01em;
    margin: 0 0 .5em;
    line-height: 1.05;
    text-transform: uppercase;
  }
  h1 { font-size: clamp(2.4rem, 5vw, 4.4rem); }
  h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); }
  h3 { font-size: 1.25rem; }
  .eyebrow {
    font-family: 'Montserrat', sans-serif;
    text-transform: uppercase;
    letter-spacing: .22em;
    font-size: .72rem;
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 1rem;
    display: inline-block;
  }
  .wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

  /* ---------- Header ---------- */
  .topbar {
    background: #fff;
    color: var(--ink);
    font-size: .82rem;
    text-align: center;
    padding: .6rem 0;
    letter-spacing: .04em;
    border-bottom: 1px solid var(--rule);
  }
  header.site {
    background: var(--navy);
    position: sticky; top: 0; z-index: 50;
  }
  .nav {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 28px; max-width: var(--maxw); margin: 0 auto;
    gap: 32px;
  }
  .nav .logo-img { display: block; height: 48px; width: auto; }
  .nav ul {
    display: flex; gap: 36px; list-style: none; margin: 0; padding: 0;
    font-size: .9rem; letter-spacing: .12em; text-transform: uppercase;
    font-weight: 500;
  }
  .nav ul a { color: #fff; }
  .nav ul a:hover { color: #f0b89c; }
  .nav a.active { color: #f0b89c; }
  .nav-cta {
    background: #fff; color: var(--navy);
    padding: 10px 20px; font-size: .82rem; border-radius: 999px;
    letter-spacing: .08em; text-transform: uppercase; font-weight: 600;
  }
  .nav-cta:hover { background: #f0b89c; }

  /* ---------- Hero typographique ---------- */
  .hero {
    position: relative;
    background: var(--cream);
    color: var(--ink);
    padding: 80px 0 70px;
    overflow: hidden;
  }
  .hero .wrap { position: relative; }
  .hero .eyebrow { color: var(--accent); opacity: 1; }

  .hero-top {
    display: flex; justify-content: space-between; align-items: flex-start; gap: 40px;
    margin-bottom: 30px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--rule);
    font-size: .8rem; letter-spacing: .14em; text-transform: uppercase;
    color: var(--muted);
  }
  .hero-top .right { text-align: right; }
  .hero-top b { color: var(--navy); font-weight: 600; }

  .hero .wordmark {
    font-family: 'Anton', sans-serif;
    font-weight: 400;
    font-size: clamp(4.5rem, 17vw, 15rem);
    line-height: .92;
    letter-spacing: 6.2px;
    color: var(--navy);
    margin: 10px 0 0;
    text-transform: uppercase;
    text-align: center;
  }
  .hero h1 {
    color: var(--navy);
    margin: 6px auto 0;
    font-size: clamp(.85rem, 2.6vw, 2.2rem);
    font-family: 'Anton', sans-serif;
    font-weight: 400;
    text-transform: uppercase;
    text-align: center;
    line-height: 1;
    letter-spacing: .04em;
    white-space: nowrap;
  }
  .hero .tagline {
    color: var(--navy);
    max-width: 720px;
    margin: 28px auto 0;
    font-family: 'Montserrat', sans-serif;
    font-style: italic;
    font-weight: 400;
    font-size: clamp(.95rem, 1.4vw, 1.15rem);
    text-align: center;
    line-height: 1.5;
    opacity: .85;
  }
  .hero .sub {
    max-width: 580px;
    font-size: 1.02rem;
    opacity: .85;
    margin: 22px auto 36px;
    text-align: center;
    color: #444;
  }
  .hero .ctas { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }

  .btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 16px 28px; border-radius: 999px;
    font-weight: 600; font-size: .95rem; letter-spacing: .02em;
    transition: transform .2s ease, background .2s ease;
    cursor: pointer; border: 0;
  }
  .btn-primary { background: #fff; color: var(--navy); }
  .btn-primary:hover { transform: translateY(-2px); }
  .btn-ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,.6); }
  .btn-ghost:hover { background: #fff; color: var(--navy); }
  .btn-dark { background: var(--navy); color: #fff; }
  .btn-dark:hover { background: var(--navy-700); }

  .scroll-hint { display: none; }
  .btn-primary { background: var(--navy); color: #fff; }
  .btn-primary:hover { background: var(--navy-700); transform: translateY(-2px); }
  .hero .btn-ghost { color: var(--navy); border-color: var(--navy); }
  .hero .btn-ghost:hover { background: var(--navy); color: #fff; }

  /* ---------- Stats bar ---------- */
  .stats {
    background: var(--navy);
    color: #fff;
    padding: 32px 0;
  }
  .stats .wrap {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
    text-align: center;
  }
  .stats .num { font-family: 'Anton', sans-serif; font-size: 2.6rem; color: #fff; font-weight: 400; letter-spacing: .02em; }
  .stats .lbl { font-size: .8rem; letter-spacing: .15em; text-transform: uppercase; opacity: .8; }

  /* ---------- Intro 3 colonnes ---------- */
  section { padding: 110px 0; }
  .section-head { max-width: 720px; }
  .section-head p { font-size: 1.15rem; color: var(--muted); margin: 12px 0 0; }

  .approche { text-align: left; }

  .approche-layout {
    display: grid; grid-template-columns: 1fr 1fr; gap: 64px;
    align-items: start;
  }
  .approche-right { text-align: right; }
  .approche-right .section-head { margin-left: auto; }
  .approche-right .approche-acc { margin-top: 40px; }
  .approche-photo {
    position: sticky; top: 100px;
    aspect-ratio: 4 / 5;
    border-radius: 4px; overflow: hidden;
    background: #f4f4f4;
  }
  .approche-photo img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity .45s ease;
  }
  .approche-photo img.is-active { opacity: 1; }

  .approche-acc { margin: 0; max-width: 100%; display: flex; flex-direction: column; gap: 0; text-align: left; }
  .approche-acc details { border-top: 1px solid var(--rule); }
  .approche-acc details:last-of-type { border-bottom: 1px solid var(--rule); }
  .approche-acc summary {
    list-style: none; cursor: pointer;
    padding: 28px 4px;
    display: grid; grid-template-columns: 90px 1fr auto; align-items: center; gap: 24px;
    transition: padding .2s;
  }
  .approche-acc summary::-webkit-details-marker { display: none; }
  .approche-acc summary .num-tag {
    font-family: 'Anton', sans-serif;
    font-size: 1rem; color: var(--accent);
    letter-spacing: .1em; margin: 0;
  }
  .approche-acc summary .ti {
    font-family: 'Anton', sans-serif;
    font-size: 1.6rem; color: var(--navy);
    letter-spacing: .04em; text-transform: uppercase;
  }
  .approche-acc summary::after {
    content: '+';
    font-family: 'Anton', sans-serif;
    font-size: 1.8rem; color: var(--navy); line-height: 1;
    transition: transform .25s;
  }
  .approche-acc details[open] summary::after { content: '−'; }
  .approche-acc .panel {
    padding: 8px 4px 32px 114px;
    max-width: 820px;
  }
  .approche-acc .panel p {
    font-size: 1.05rem; color: #3a3a3a; line-height: 1.7; margin: 0;
  }
  @media (max-width: 720px) {
    .approche-acc summary { grid-template-columns: 60px 1fr auto; gap: 14px; padding: 22px 4px; }
    .approche-acc summary .ti { font-size: 1.25rem; }
    .approche-acc .panel { padding-left: 74px; }
  }


  /* ---------- Prestations ---------- */
  .prestations-bg { background: var(--paper); }
  .prestations-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
    margin-top: 56px;
  }
  .presta-card {
    background: #fafafa;
    padding: 40px 32px;
    border-radius: 4px;
    display: flex; flex-direction: column;
    border-top: 3px solid var(--navy);
    border: 1px solid #ececec;
    border-top: 3px solid var(--navy);
  }
  .presta-card .icon {
    width: 48px; height: 48px; margin-bottom: 24px;
    color: var(--navy);
  }
  .presta-card h3 { margin-bottom: 12px; }
  .presta-card ul { padding-left: 0; list-style: none; margin: 16px 0; }
  .presta-card li {
    position: relative; padding-left: 22px; margin-bottom: 8px; font-size: .95rem; color: #444;
  }
  .presta-card li::before {
    content: '→'; position: absolute; left: 0; color: var(--accent); font-weight: 700;
  }
  .presta-cta {
    text-align: center; margin-top: 56px;
  }

  /* ---------- Projets ---------- */
  .projets-bg { background: var(--cream); }
  .filters {
    display: flex; gap: 12px; flex-wrap: wrap;
    margin: 40px 0 48px;
  }
  .filter-btn {
    padding: 8px 18px; border-radius: 999px;
    background: transparent; border: 1px solid var(--navy);
    color: var(--navy); font-size: .85rem; font-weight: 500;
    cursor: pointer; transition: all .2s;
    letter-spacing: .03em;
  }
  .filter-btn.active, .filter-btn:hover { background: var(--navy); color: #fff; }

  .projets-grid-full {
    width: 100%; padding: 0 28px;
  }
  .projets-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
  }
  .projet {
    display: block;
    background: #fff; border-radius: 4px; overflow: hidden;
    transition: transform .25s ease, box-shadow .25s ease;
    cursor: pointer;
    text-decoration: none; color: inherit;
  }
  .projet:hover { transform: translateY(-4px); box-shadow: 0 20px 50px rgba(27,42,78,.12); }
  .projet .ph {
    aspect-ratio: 4 / 5;
    background-size: cover; background-position: center;
    position: relative;
  }
  .projet .meta { padding: 22px 24px 26px; }
  .projet h3 { margin: 0 0 6px; }
  .projet .place { color: var(--muted); font-size: .85rem; letter-spacing: .05em; text-transform: uppercase; }
  .projet p { font-size: .95rem; color: #444; margin: 10px 0 0; }

  /* ---------- CTA final ---------- */
  .cta-final {
    background: var(--paper);
    text-align: center;
    padding: 120px 0;
  }
  .cta-final h2 { margin-bottom: 16px; }
  .cta-final p { max-width: 580px; margin: 0 auto 36px; color: var(--muted); font-size: 1.1rem; }

  /* ---------- Témoignages ---------- */
  .temo-bg { background: var(--navy); color: #fff; }
  .temo-bg h2 { color: #fff; }
  .temo-bg .eyebrow { color: #f0b89c; }
  .temo-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
    margin-top: 56px;
  }
  .temo-card {
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.1);
    padding: 36px 32px; border-radius: 6px;
  }
  .temo-card p { font-style: italic; font-size: 1.02rem; opacity: .92; line-height: 1.6; margin: 0; }
  .temo-author { display: flex; align-items: center; gap: 14px; margin-top: 24px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.1); }
  .temo-author .ph-author { width: 44px; height: 44px; border-radius: 50%; background: #c4a78a; }
  .temo-author .nm { font-weight: 600; }
  .temo-author .ro { font-size: .82rem; opacity: .7; }

  /* ---------- Footer ---------- */
  footer.site-footer { background: #fff; color: var(--ink); }
  .footer-intro { padding: 80px 0; }
  .footer-intro p { max-width: 980px; margin: 0 auto; font-size: 1.02rem; line-height: 1.7; text-align: center; color: #333; }
  .footer-intro strong { color: var(--navy); font-weight: 700; }

  .footer-cols { background: var(--navy); color: #fff; padding: 60px 0; }
  .footer-cols .grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px;
  }
  .footer-cols h4 { color: #fff; font-family: 'Anton', sans-serif; font-size: 1.1rem; letter-spacing: .14em; text-transform: uppercase; margin: 0 0 18px; font-weight: 400; }
  .footer-cols p { margin: 0; font-size: .92rem; line-height: 1.7; color: #fff; }
  .footer-cols a { color: #fff; text-decoration: underline; text-underline-offset: 3px; }
  .footer-cols a:hover { color: #f0b89c; }

  .footer-credit { background: var(--navy); color: #fff; padding: 0 0 36px; text-align: center; font-size: .82rem; letter-spacing: .04em; }
  .footer-credit p { margin: 0; }
  .footer-credit em { font-style: normal; color: #f0b89c; }

  /* ---------- Responsive ---------- */
  @media (max-width: 960px) {
    .prestations-grid, .projets-grid, .temo-grid { grid-template-columns: 1fr; gap: 36px; }
    .approche-layout { grid-template-columns: 1fr; gap: 32px; }
    .approche-photo { position: relative; top: auto; aspect-ratio: 4 / 3; }
    .stats .wrap { grid-template-columns: repeat(2, 1fr); }
    .footer-cols .grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .nav ul { display: none; }
    section { padding: 70px 0; }
  }

  @media (max-width: 720px) {
    .wrap { padding: 0 20px; }
    .nav { padding: 14px 20px; gap: 16px; }
    .nav .logo-img { height: 40px; }
    .nav-cta { padding: 8px 14px; font-size: .75rem; letter-spacing: .06em; }

    .hero { padding: 56px 0 48px; }
    .hero-top { flex-direction: column; gap: 8px; align-items: flex-start; text-align: left; margin-bottom: 22px; padding-bottom: 18px; font-size: .72rem; letter-spacing: .1em; }
    .hero-top .right { text-align: left; }
    .hero .wordmark {
      font-size: clamp(3rem, 18vw, 6rem);
      letter-spacing: 2px;
      line-height: 1;
    }
    .hero h1 {
      white-space: normal;
      font-size: clamp(1rem, 4.2vw, 1.4rem);
      margin-top: 12px;
      padding: 0 8px;
    }
    .hero .tagline { font-size: 1rem; margin-top: 20px; padding: 0 4px; }
    .hero .sub { font-size: .98rem; margin: 18px auto 28px; }
    .hero .ctas { gap: 10px; }
    .btn { padding: 14px 22px; font-size: .9rem; width: 100%; justify-content: center; }
    .hero .ctas .btn { flex: 1 1 100%; max-width: 320px; }

    section { padding: 56px 0; }

    .section-head p { font-size: 1rem; }

    .approche-right { text-align: left; }
    .approche-right .section-head { margin-left: 0; }
    .approche-right .section-head h2 { line-height: 1.25; }

    .projets-grid-full { padding: 0 20px; }
    .filters { gap: 8px; margin: 28px 0 32px; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; -webkit-overflow-scrolling: touch; }
    .filters::-webkit-scrollbar { display: none; }
    .filter-btn { flex: 0 0 auto; font-size: .8rem; padding: 7px 14px; }

    .projet .meta { padding: 18px 20px 22px; }

    .presta-card { padding: 32px 24px; }

    .cta-final { padding: 72px 0; }
    .cta-final p { font-size: 1rem; }

    .temo-grid { gap: 22px; margin-top: 36px; }
    .temo-card { padding: 28px 24px; }

    .footer-intro { padding: 56px 0; }
    .footer-cols { padding: 48px 0; }
    .footer-cols .grid { grid-template-columns: 1fr; gap: 28px; }
  }