:root { --nav-h: 76px; }
  * { box-sizing: border-box; }
  body { margin: 0; }
  img { display: block; }

  /* ============================================================
     MOUVEMENT & RELIEF, couche transverse (aucune couleur nouvelle :
     tout réutilise les tokens de charte ci-dessus, en opacité/ombre).
     ============================================================ */

  /* scroll-progress : filet corail qui se remplit avec la lecture */
  .scroll-progress {
    position: fixed; top: 0; left: 0; height: 3px; width: 100%;
    background: var(--aurore); transform: scaleX(0); transform-origin: left center;
    z-index: 80; pointer-events: none;
  }

  /* reveal : dégradé d'apparition au scroll, n'agit qu'avec JS actif
     (dégradation propre : sans JS, tout reste visible d'emblée). */
  html.has-js .reveal {
    opacity: 0; transform: translateY(26px);
    transition: opacity 0.9s var(--ease-soft), transform 0.9s var(--ease-soft);
  }
  html.has-js .reveal.is-visible { opacity: 1; transform: translateY(0); }

  /* dividers organiques entre sections, même dégradé "tissé" que la marque,
     coloré uniquement avec les tokens déjà en charte (currentColor hérite
     de la propriété color posée en inline sur chaque svg). */
  .divider-wave {
    position: absolute; top: 0; left: 0; width: 100%;
    height: clamp(32px, 5vw, 72px); z-index: 4; pointer-events: none; display: block;
  }

  /* halo doux derrière le CTA principal, pulse discret au survol */
  .btn-accent { position: relative; isolation: isolate; }
  .btn-accent::after {
    content: ""; position: absolute; inset: -8px; border-radius: inherit;
    background: var(--aurore); opacity: 0; z-index: -1; filter: blur(16px);
    transition: opacity var(--dur-base) var(--ease-soft);
  }
  .btn-accent:hover::after { opacity: 0.4; animation: pulse-glow 1.8s ease-in-out infinite; }
  @keyframes pulse-glow {
    0%, 100% { opacity: 0.30; transform: scale(1); }
    50%      { opacity: 0.46; transform: scale(1.08); }
  }

  /* numéro fantôme, profondeur typographique derrière chaque étape */
  .step .num { position: relative; z-index: 1; }
  .step .num::before {
    content: attr(data-n); position: absolute; left: 2px; top: -10px;
    font-size: 92px; line-height: 1; letter-spacing: 0;
    color: currentColor; opacity: 0.10; z-index: -1; pointer-events: none;
  }

  /* connecteurs animés, l'énergie qui circule d'une étape à l'autre */
  .step-link .dash { animation: dash-flow 2.6s linear infinite; }
  @keyframes dash-flow { to { background-position: -28px 0; } }

  /* portrait, relief en 3D discret, suit le curseur */
  .hero-visual {
    --tilt-x: 0deg; --tilt-y: 0deg;
    transform: perspective(1100px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
    transition: transform 0.6s var(--ease-soft);
  }
  .hero-visual:hover { transition: transform 0.15s var(--ease-soft); }

  /* nav, soulignement animé au lieu d'un changement de couleur instantané */
  nav.links a::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 3px; height: 1px;
    background: var(--aurore); transform: scaleX(0); transform-origin: left center;
    transition: transform 0.35s var(--ease-soft);
  }
  nav.links a:hover::after { transform: scaleX(1); }

  @media (prefers-reduced-motion: reduce) {
    html.has-js .reveal { opacity: 1; transform: none; transition: none; }
    .step-link .dash { animation: none; }
    .btn-accent:hover::after { animation: none; }
    .hero-visual { transition: none; }
  }

  /* ============================================================
     NAV, validated kit
     ============================================================ */
  header.nav {
    position: sticky; top: 0; z-index: 60;
    height: var(--nav-h);
    background: var(--coton);
    transition: box-shadow var(--dur-base) var(--ease-soft);
  }
  header.nav.scrolled { box-shadow: var(--shadow-s); }
  /* signature separator under the nav, a worked filet, not a flat 1px line */
  header.nav::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px;
    background:
      radial-gradient(60% 100% at 50% 0%, rgba(245,115,102,0.55), rgba(245,115,102,0) 72%),
      linear-gradient(90deg, transparent, rgba(79,82,66,0.22) 18%, rgba(79,82,66,0.28) 50%, rgba(79,82,66,0.22) 82%, transparent);
    pointer-events: none;
  }
  .nav-inner {
    max-width: var(--container); margin: 0 auto;
    height: 100%; padding: 0 32px;
    display: flex; align-items: center; gap: 36px;
  }
  .nav-inner .brand { display: flex; align-items: center; }
  .nav-inner .brand img { height: 44px; }
  nav.links { display: flex; gap: 32px; flex: 1; justify-content: center; }
  nav.links a {
    position: relative;
    color: var(--serenity); text-decoration: none;
    font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase;
    opacity: 0.78; transition: opacity var(--dur-base) var(--ease-soft);
    padding: 4px 0;
  }
  nav.links a:hover { opacity: 1; }
  .nav-cta {
    font-size: 11px; letter-spacing: var(--tracking-button); text-transform: uppercase;
    color: var(--coton); background: var(--serenity); font-weight: 500;
    padding: 12px 22px; border-radius: var(--radius-pill);
    text-decoration: none; white-space: nowrap; box-shadow: var(--shadow-s);
    transition: background var(--dur-base) var(--ease-soft), transform var(--dur-fast) var(--ease-soft), box-shadow var(--dur-base) var(--ease-soft);
  }
  .nav-cta:hover { background: var(--serenity-ink); box-shadow: var(--shadow-m); transform: translateY(-1px); }
  .nav-cta:active { transform: translateY(1px); box-shadow: var(--shadow-xs); }

  /* ============================================================
     SECTION 1, HERO (validated 2-col), worked graphic background
     ============================================================ */
  .hero { position: relative; overflow: hidden; padding: 104px 32px 128px; background: var(--coton); --parallax-y: 0; }
  /* layer A, woven ribbons rising from the lower-left, anchoring the text column */
  .hero::before {
    content: ""; position: absolute; left: 0; bottom: 0; width: 60%; height: 80%;
    background: url('assets/motifs/lines-coton.png') left bottom/cover no-repeat;
    opacity: 0.6; pointer-events: none; z-index: 0;
    -webkit-mask-image: radial-gradient(ellipse 90% 90% at 14% 92%, #000 4%, transparent 66%);
            mask-image: radial-gradient(ellipse 90% 90% at 14% 92%, #000 4%, transparent 66%);
    transform: translateY(calc(var(--parallax-y) * 1px));
  }
  /* layer B, pétales drifting behind the portrait, brume tint */
  .hero::after {
    content: ""; position: absolute; right: -4%; top: -10%; width: 70%; height: 120%;
    background: url('assets/motifs/petales-brume.png') center right/cover no-repeat;
    opacity: 0.58; pointer-events: none; z-index: 0;
    -webkit-mask-image: radial-gradient(ellipse 82% 80% at 68% 46%, #000 4%, transparent 72%);
            mask-image: radial-gradient(ellipse 82% 80% at 68% 46%, #000 4%, transparent 72%);
    transform: translateY(calc(var(--parallax-y) * -1.4px));
  }
  .hero-grid {
    position: relative; z-index: 1;
    max-width: var(--container); margin: 0 auto;
    display: grid; grid-template-columns: 1.05fr 1fr; gap: 80px;
    align-items: center;
  }
  .hero .eyebrow { margin-bottom: 24px; }
  .hero h1 {
    font-size: clamp(44px, 6vw, 78px); line-height: 1.02;
    letter-spacing: 0.045em; margin-bottom: 28px;
    text-wrap: balance;
  }
  .hero p.sub {
    font-size: 18px; color: var(--fg-muted); max-width: 480px;
    margin: 0 0 36px; line-height: 1.62;
  }
  .cta-row { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }

  /* portrait of Aurélie, raised off the page, soft offset panel behind it */
  .hero-visual {
    position: relative; aspect-ratio: 4/5;
    border-radius: var(--radius-l);
  }
  /* offset coton-warm panel, gives the portrait depth without a gradient */
  .hero-visual::before {
    content: ""; position: absolute; z-index: 0;
    left: 28px; right: -28px; top: 28px; bottom: -28px;
    border-radius: var(--radius-l); background: var(--brume-mist);
    box-shadow: var(--shadow-s);
  }
  .hero-visual .slot {
    position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1;
    display: block; --slot-bg: var(--brume-mist);
    border-radius: var(--radius-l); overflow: hidden;
    box-shadow: var(--shadow-l);
    object-fit: cover; object-position: center top;
  }

  /* ============================================================
     SECTION 2, PROBLÈME (centered, intimate)
     ============================================================ */
  .probleme {
    padding: clamp(88px, 12vw, 156px) 32px;
    background: var(--serenity-ink); color: var(--coton);
    text-align: center; position: relative; overflow: hidden;
  }
  /* matière : voile de motif tissé + jeu de lumière doux venu du haut */
  .probleme::before {
    content: ""; position: absolute; inset: 0; pointer-events: none;
    background: url('assets/motifs/petales-serenity.png') center/120% no-repeat;
    opacity: 0.14; mix-blend-mode: screen;
  }
  .probleme::after {
    content: ""; position: absolute; inset: 0; pointer-events: none;
    background: radial-gradient(ellipse 90% 55% at 50% -8%, rgba(240,237,227,0.10), transparent 62%);
  }
  .probleme-inner { position: relative; z-index: 2; max-width: var(--container-narrow); margin: 0 auto; }
  .probleme .eyebrow { color: var(--aurore-soft); margin-bottom: 30px; }
  .probleme h2 {
    font-size: clamp(28px, 4vw, 46px); line-height: 1.12;
    letter-spacing: 0.05em; margin: 0 auto 36px; max-width: 18ch; color: var(--coton);
  }
  .probleme h2 .em {
    display: block; font-family: var(--font-display); font-style: italic;
    text-transform: none; letter-spacing: 0; color: var(--aurore-soft);
    font-size: 1.18em; line-height: 1.04; margin-top: 0.16em;
  }
  .probleme .hairline { width: 64px; height: 1px; background: rgba(240,237,227,0.34); margin: 0 auto 36px; }
  .probleme p {
    font-size: clamp(17px, 1.4vw, 20px); line-height: 1.74;
    color: rgba(240,237,227,0.80); margin: 0 auto 24px; max-width: 56ch; text-wrap: pretty;
  }
  .probleme p:last-child { margin-bottom: 0; }
  .probleme p .accent { color: var(--coton); font-weight: 500; }

  /* ============================================================
     SECTION 3, APPROCHE + AURÉLIE, text only, brume surface
     ============================================================ */
  .approche {
    padding: clamp(84px, 11vw, 132px) 32px;
    background: var(--brume-mist); position: relative; overflow: hidden;
  }
  .approche::before {
    content: ""; position: absolute; inset: 0;
    background: url('assets/motifs/petales-brume.png') center/cover no-repeat;
    opacity: 0.30; pointer-events: none; mix-blend-mode: multiply;
    -webkit-mask-image: radial-gradient(ellipse 120% 100% at 50% 50%, #000 14%, transparent 80%);
            mask-image: radial-gradient(ellipse 120% 100% at 50% 50%, #000 14%, transparent 80%);
  }
  .approche-inner {
    position: relative; z-index: 1; max-width: var(--container-narrow); margin: 0 auto;
  }
  .approche .eyebrow { color: var(--serenity); margin-bottom: 20px; display: block; }
  .approche h2 {
    font-size: clamp(28px, 3.8vw, 48px); line-height: 1.08;
    letter-spacing: 0.04em; margin: 0 0 32px; max-width: 18ch; color: var(--serenity-ink);
  }
  .approche p {
    font-size: clamp(16px, 1.2vw, 18px); line-height: 1.72;
    color: var(--serenity); margin: 0 0 22px; max-width: 64ch; text-wrap: pretty;
  }
  /* exergue, Aurélie's voice, raised onto a coton card with a serif treatment */
  .approche .signature {
    position: relative;
    font-family: var(--font-display); font-style: italic;
    text-transform: none; letter-spacing: 0;
    font-size: clamp(21px, 2vw, 28px); line-height: 1.46; color: var(--serenity-ink);
    background: var(--coton);
    margin: 40px 0 36px; padding: 36px 40px 40px 46px;
    border-radius: var(--radius-l); box-shadow: var(--shadow-m); max-width: none;
  }
  .approche .signature::before {
    content: ""; position: absolute; left: 0; top: 22px; bottom: 22px; width: 3px;
    border-radius: 999px; background: var(--aurore);
  }
  .approche .signature .who {
    display: block; margin-top: 18px;
    font-family: var(--font-body); font-style: normal;
    font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase;
    color: var(--serenity-soft);
  }
  .approche .signature .who b { color: var(--serenity-ink); font-weight: 600; letter-spacing: 0.08em; }

  /* ============================================================
     SECTION 4, COMMENT ÇA MARCHE (validated pillars)
     ============================================================ */
  .etapes {
    padding: clamp(84px, 11vw, 132px) 32px; background: var(--coton-warm);
    position: relative; overflow: hidden;
  }
  .etapes::before {
    content: ""; position: absolute; inset: 0; pointer-events: none;
    background: url('assets/motifs/lines-coton.png') center/cover no-repeat;
    opacity: 0.42;
    -webkit-mask-image: radial-gradient(ellipse 120% 100% at 50% 50%, #000 10%, transparent 76%);
            mask-image: radial-gradient(ellipse 120% 100% at 50% 50%, #000 10%, transparent 76%);
  }
  .etapes-inner { position: relative; z-index: 2; max-width: var(--container); margin: 0 auto; }
  .etapes .head { text-align: center; margin-bottom: clamp(48px, 6vw, 72px); }
  .etapes .head .eyebrow { color: var(--aurore); margin-bottom: 18px; }
  .etapes .head h2 { font-size: clamp(30px, 4.2vw, 50px); line-height: 1.06; letter-spacing: 0.04em; }

  /* flow: cards joined by directional connectors, a path from 01 to 03 */
  .steps { display: flex; align-items: stretch; gap: 0; }
  .step {
    flex: 1 1 0; min-width: 0;
    border-radius: var(--radius-l);
    padding: 44px 34px 46px;
    position: relative; overflow: hidden;
    display: flex; flex-direction: column;
    transition: box-shadow var(--dur-base) var(--ease-soft), transform var(--dur-base) var(--ease-soft);
  }
  .step:hover { transform: translateY(-6px); }
  .step .num {
    font-family: var(--font-display); font-size: 58px; line-height: 1;
    letter-spacing: 0.04em; margin-bottom: 20px; position: relative;
  }
  .step h3 { font-size: 25px; margin-bottom: 16px; letter-spacing: 0.06em; position: relative; }
  .step p { font-size: 14.5px; line-height: 1.62; margin: 0; position: relative; }
  .step .gratuit {
    display: inline-block; margin-top: 18px;
    font-family: var(--font-body); font-weight: 600; font-size: 11px;
    letter-spacing: 0.2em; text-transform: uppercase; color: var(--coton);
    background: var(--aurore); padding: 7px 18px; border-radius: var(--radius-pill);
    box-shadow: var(--shadow-s);
    text-decoration: none; cursor: pointer;
    transition: background 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
  }
  a.step-gratuit:hover, .step a.gratuit:hover {
    background: var(--accent-hover, #e85a4d); transform: translateY(-1px);
    box-shadow: var(--shadow-l, 0 10px 24px rgba(0,0,0,0.14));
  }
  /* connector between cards */
  .step-link {
    flex: 0 0 56px; align-self: center;
    display: flex; align-items: center; justify-content: center;
    position: relative; z-index: 3; color: var(--serenity);
  }
  .step-link .dash {
    position: absolute; left: 6px; right: 6px; top: 50%; height: 2px; transform: translateY(-50%);
    background: repeating-linear-gradient(90deg, rgba(79,82,66,0.34) 0 7px, transparent 7px 14px);
  }
  .step-link .pip {
    position: relative; width: 38px; height: 38px; border-radius: 999px;
    background: var(--coton); box-shadow: var(--shadow-s);
    display: flex; align-items: center; justify-content: center;
    font-size: 17px; line-height: 1; color: var(--aurore);
  }
  .step.coton {
    background:
      radial-gradient(ellipse 95% 80% at 30% 35%, var(--bg-elevated) 30%, rgba(246,243,235,0.7) 62%, transparent 100%),
      url('assets/motifs/lines-coton.png') center/cover no-repeat, var(--bg-elevated);
    border: 1px solid var(--coton-shadow);
    box-shadow: var(--shadow-m);
  }
  .step.coton:hover { box-shadow: var(--shadow-l); }
  .step.coton .num { color: var(--aurore); }
  .step.coton h3 { color: var(--serenity-ink); }
  .step.coton p { color: var(--fg-muted); }
  .step.brume {
    background:
      radial-gradient(ellipse 95% 80% at 30% 35%, var(--brume-mist) 28%, rgba(191,211,208,0.55) 60%, transparent 100%),
      url('assets/motifs/lines-brume.png') center/cover no-repeat, var(--brume-mist);
    box-shadow: var(--shadow-m);
  }
  .step.brume:hover { box-shadow: var(--shadow-l); }
  .step.brume .num { color: var(--brume-deep); }
  .step.brume h3 { color: var(--serenity-ink); }
  .step.brume p { color: var(--serenity); }
  .step.serenity {
    background:
      radial-gradient(ellipse 95% 80% at 30% 35%, var(--serenity) 28%, rgba(79,82,66,0.55) 60%, transparent 100%),
      url('assets/motifs/lines-serenity.png') center/cover no-repeat, var(--serenity);
    color: var(--coton); box-shadow: var(--shadow-m);
  }
  .step.serenity:hover { box-shadow: var(--shadow-l); }
  .step.serenity .num { color: var(--aurore-soft); }
  .step.serenity h3 { color: var(--coton); }
  .step.serenity p { color: rgba(240,237,227,0.82); }

  /* ============================================================
     SECTION 5, CRÉDIBILITÉ (brume, dramatic price)
     ============================================================ */
  .credo { padding: clamp(84px, 11vw, 144px) 32px; background: var(--brume); text-align: center; position: relative; overflow: hidden; }
  .credo::before {
    content: ""; position: absolute; inset: 0; pointer-events: none;
    background: url('assets/motifs/petales-brume.png') center/cover no-repeat;
    opacity: 0.26; mix-blend-mode: multiply;
    -webkit-mask-image: radial-gradient(ellipse 120% 110% at 50% 50%, #000 12%, transparent 78%);
            mask-image: radial-gradient(ellipse 120% 110% at 50% 50%, #000 12%, transparent 78%);
  }
  .credo-inner { position: relative; z-index: 1; max-width: var(--container-narrow); margin: 0 auto; }
  .credo .eyebrow { color: var(--serenity-ink); margin-bottom: 26px; display: block; }
  .credo h2 {
    font-size: clamp(28px, 3.8vw, 48px); line-height: 1.1; letter-spacing: 0.04em;
    margin: 0 auto 36px; max-width: 20ch; color: var(--serenity-ink);
  }
  .credo p {
    font-size: clamp(16px, 1.3vw, 19px); line-height: 1.72;
    color: var(--serenity-ink); margin: 0 auto 24px; max-width: 58ch; text-wrap: pretty;
  }
  .credo .price-note {
    margin: 48px auto 0; max-width: 64ch;
    background: var(--coton); border-radius: var(--radius-l);
    padding: clamp(34px, 4vw, 48px) clamp(28px, 4vw, 52px);
    box-shadow: var(--shadow-l);
  }
  .price-compare {
    display: flex; align-items: center; justify-content: center; gap: clamp(20px, 4vw, 44px);
    flex-wrap: wrap; margin-bottom: 28px;
  }
  .price-keys {
    margin-top: 22px; text-align: center;
    font-family: var(--font-display); text-transform: uppercase;
    font-size: clamp(14px, 1.5vw, 18px); letter-spacing: 0.22em;
    color: var(--aurore); font-weight: 600;
  }
  .price-old { text-align: center; }
  .price-old .amount {
    position: relative; display: inline-block;
    font-family: var(--font-display); font-weight: 500;
    font-size: clamp(64px, 9vw, 104px); line-height: 0.9; letter-spacing: 0.01em;
    color: var(--serenity-soft);
  }
  /* the "barré", a thick corail stroke that reads instantly as "too expensive" */
  .price-old .amount::after {
    content: ""; position: absolute; left: -6%; right: -6%; top: 52%; height: 7px;
    background: var(--aurore); border-radius: 999px; transform: rotate(-7deg);
    box-shadow: 0 1px 3px rgba(245,115,102,0.4);
  }
  .price-old .plabel {
    display: block; margin-top: 14px;
    font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--fg-soft);
  }
  .price-arrow {
    font-family: var(--font-display); font-size: clamp(34px, 5vw, 52px);
    color: var(--brume-deep); line-height: 1;
  }
  .price-new { text-align: center; }
  .price-new .tag {
    display: inline-block; font-family: var(--font-display);
    text-transform: uppercase; letter-spacing: 0.04em;
    font-size: clamp(30px, 4.4vw, 50px); line-height: 1; color: var(--serenity-ink);
  }
  .price-new .plabel {
    display: block; margin-top: 14px;
    font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--aurore);
    font-weight: 600;
  }
  .credo .price-note p {
    font-size: clamp(15.5px, 1.3vw, 18px); color: var(--serenity); margin: 0; line-height: 1.66;
  }

  /* ============================================================
     SECTION 6, CTA FINAL (validated products serenity + soleil)
     ============================================================ */
  .final {
    padding: clamp(88px, 12vw, 152px) 32px; background: var(--serenity); color: var(--coton);
    position: relative; overflow: hidden; text-align: center;
  }
  .final::before {
    content: ""; position: absolute; left: 50%; top: -160px; transform: translateX(-50%);
    width: 760px; height: 760px; max-width: 140vw;
    background: url('assets/motifs/soleil-serenity.png') center/contain no-repeat;
    opacity: 0.55; pointer-events: none;
    -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 28%, transparent 70%);
            mask-image: radial-gradient(circle at 50% 50%, #000 28%, transparent 70%);
  }
  .final-inner { position: relative; z-index: 2; max-width: var(--container-narrow); margin: 0 auto; }
  .final .eyebrow { color: var(--aurore-soft); margin-bottom: 26px; }
  .final h2 {
    color: var(--coton); font-size: clamp(34px, 5vw, 60px); line-height: 1.05;
    letter-spacing: 0.045em; margin: 0 auto 30px; max-width: 18ch;
  }
  .final h2 .em {
    font-family: var(--font-display); font-style: italic;
    text-transform: none; letter-spacing: 0; color: var(--aurore-soft);
    font-size: 1.1em;
  }
  .final p {
    font-size: clamp(16px, 1.4vw, 19px); line-height: 1.7;
    color: rgba(240,237,227,0.85); margin: 0 auto 18px; max-width: 56ch; text-wrap: pretty;
  }
  .final p:last-of-type { margin-bottom: 48px; }

  /* ============================================================
     BUTTONS
     ============================================================ */
  .btn-accent {
    display: inline-flex; align-items: center; gap: 12px;
    font-family: var(--font-body); font-weight: 500; font-size: 12px;
    letter-spacing: var(--tracking-button); text-transform: uppercase;
    background: var(--aurore); color: var(--coton);
    padding: 15px 30px; border-radius: var(--radius-pill);
    text-decoration: none; border: none; cursor: pointer;
    box-shadow: var(--shadow-s);
    transition: background var(--dur-base) var(--ease-soft), transform var(--dur-fast) var(--ease-soft), box-shadow var(--dur-base) var(--ease-soft);
  }
  .btn-accent:hover { background: var(--accent-hover); box-shadow: var(--shadow-l); transform: translateY(-2px); }
  .btn-accent:active { transform: translateY(0); box-shadow: var(--shadow-s); }
  .btn-accent.lg { font-size: 13px; padding: 19px 44px; letter-spacing: 0.2em; }
  .btn-accent .arrow { transition: transform var(--dur-base) var(--ease-soft); }
  .btn-accent:hover .arrow { transform: translateX(4px); }

  .btn-primary {
    display: inline-flex; align-items: center; gap: 12px;
    font-family: var(--font-body); font-weight: 500; font-size: 13px;
    letter-spacing: var(--tracking-button); text-transform: uppercase;
    background: var(--serenity); color: var(--coton);
    padding: 18px 36px; border-radius: var(--radius-pill);
    text-decoration: none; border: none; cursor: pointer; box-shadow: var(--shadow-s);
    transition: background var(--dur-base) var(--ease-soft), transform var(--dur-fast) var(--ease-soft), box-shadow var(--dur-base) var(--ease-soft);
  }
  .btn-primary:hover { background: var(--serenity-ink); box-shadow: var(--shadow-m); transform: translateY(-2px); }
  .btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-xs); }
  .btn-primary .arrow { transition: transform var(--dur-base) var(--ease-soft); }
  .btn-primary:hover .arrow { transform: translateX(4px); }

  /* ============================================================
     FOOTER, validated 4-col
     ============================================================ */
  footer {
    background: var(--serenity); color: var(--coton);
    padding: 80px 32px 40px; position: relative; overflow: hidden;
  }
  footer::before {
    content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0;
    background: url('assets/motifs/lines-serenity.png') center/cover no-repeat;
    opacity: 0.16; mix-blend-mode: screen;
  }
  footer::after {
    content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0;
    background: radial-gradient(ellipse 90% 70% at 50% 0%, rgba(240,237,227,0.08), transparent 62%);
  }
  .foot-inner {
    max-width: 560px; margin: 0 auto; position: relative; z-index: 1;
    display: flex; flex-direction: column; align-items: center; text-align: center;
  }
  .foot-logo { height: 56px; }
  .foot-tagline { color: rgba(240,237,227,0.7); font-size: 14px; line-height: 1.6; max-width: 360px; margin: 18px 0 0; }
  .foot-socials { display: flex; gap: 12px; margin-top: 24px; }
  .foot-socials a {
    width: 40px; height: 40px; border-radius: var(--radius-pill);
    display: inline-flex; align-items: center; justify-content: center;
    border: 1px solid rgba(240,237,227,0.26); color: var(--coton);
    transition: background var(--dur-base) var(--ease-soft), border-color var(--dur-base) var(--ease-soft), color var(--dur-base) var(--ease-soft), transform var(--dur-fast) var(--ease-soft);
  }
  .foot-socials a:hover { background: rgba(240,237,227,0.10); border-color: var(--coton); color: var(--aurore-soft); }
  .foot-socials a:active { transform: translateY(1px); }
  .foot-socials svg { width: 18px; height: 18px; display: block; }
  .foot-legal {
    display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: center;
    margin-top: 36px;
  }
  .foot-legal a { color: var(--coton); text-decoration: none; font-size: 13px; opacity: 0.82; letter-spacing: 0.01em; }
  .foot-legal a:hover { opacity: 1; color: var(--aurore-soft); }
  .foot-legal .dot { color: rgba(240,237,227,0.4); }
  .foot-contact { color: rgba(240,237,227,0.7); font-size: 13px; margin: 20px 0 0; }
  .foot-email {
    color: var(--coton); opacity: 0.9; text-decoration: none; letter-spacing: 0.01em; word-break: break-word;
    transition: opacity var(--dur-base) var(--ease-soft), color var(--dur-base) var(--ease-soft);
  }
  .foot-email:hover { opacity: 1; color: var(--aurore-soft); }
  .foot-bottom {
    max-width: var(--container); margin: 48px auto 0; padding-top: 28px;
    border-top: 1px solid rgba(240,237,227,0.18);
    display: flex; justify-content: center;
    color: rgba(240,237,227,0.55); font-size: 11.5px; letter-spacing: 0.04em;
    position: relative; z-index: 1; gap: 16px; flex-wrap: wrap;
  }

  /* ============================================================
     RESPONSIVE
     ============================================================ */
  @media (max-width: 980px) {
    .hero-grid { grid-template-columns: 1fr; gap: 48px; }
    .hero-visual { max-width: 440px; }
    nav.links { display: none; }
    /* stack the flow vertically; connectors rotate to point downward */
    .steps { flex-direction: column; max-width: 460px; margin: 0 auto; }
    .step-link { flex: 0 0 48px; width: 100%; }
    .step-link .dash { left: 50%; right: auto; top: 6px; bottom: 6px; width: 2px; height: auto; transform: translateX(-50%);
      background: repeating-linear-gradient(180deg, rgba(79,82,66,0.34) 0 7px, transparent 7px 14px); }
    .step-link .pip { transform: rotate(90deg); }
  }
  @media (max-width: 560px) {
    .hero { padding: 72px 22px 88px; }
    .probleme, .approche, .etapes, .credo, .final { padding-inline: 22px; }
    .nav-inner { padding-inline: 22px; gap: 16px; }
    .nav-inner .brand img { height: 36px; }
    .nav-cta { padding: 10px 16px; font-size: 10px; }
    .btn-accent, .btn-primary { width: 100%; justify-content: center; }
    .approche .signature { padding: 28px 26px 28px 30px; }
    .price-arrow { transform: rotate(90deg); }
  }