/* ============ RESET ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }

/* ============ DESIGN SYSTEM ============ */
:root {
  /* Colors */
  --color-bg: #F6F0E4;
  --color-bg-deep: #EDE3D0;
  --color-surface: #FCF9F1;
  --color-fg: #32251A;
  --color-fg-muted: #756350;
  --color-accent: #B0552C;
  --color-accent-deep: #8E4120;
  --color-dark: #2A1F16;
  --color-dark-soft: #362920;
  --color-on-dark: #F2E9D9;
  --color-on-dark-muted: #C3AE96;
  --color-line: rgba(50, 37, 26, .16);

  /* Typography */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Hanken Grotesk', 'Segoe UI', sans-serif;

  /* Spacing */
  --space: 8px;
  --section-pad: clamp(4.5rem, 10vw, 8.5rem);
  --gutter: clamp(1.25rem, 4.5vw, 2.5rem);
  --container-max: 1200px;
  --nav-h: 76px;

  /* Motion */
  --ease: cubic-bezier(.16, 1, .3, 1);
  --ease-back: cubic-bezier(.34, 1.35, .44, 1);
  --dur: .45s;
  --dur-slow: .95s;

  /* Shape — signature : l’arc plein-cintre */
  --radius-arch: 999px 999px 0 0;
  --radius: 6px;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-fg);
  background: var(--color-bg);
  overflow-x: hidden;
}

::selection { background: var(--color-accent); color: var(--color-surface); }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Grain — profondeur atmosphérique globale */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: .05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

/* ============ UTILITIES ============ */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.label {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--color-accent-deep);
}
.label::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--color-accent);
  flex-shrink: 0;
}
.on-dark .label { color: var(--color-on-dark-muted); }
.on-dark .label::before { background: var(--color-accent); }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -.015em;
}
h2 { font-size: clamp(1.9rem, 4.2vw, 3.05rem); }
h1 em, h2 em, .quote em {
  font-style: italic;
  font-weight: 400;
  color: var(--color-accent-deep);
}
.on-dark h2 em { color: #D98B5F; }

.section-head { margin-bottom: clamp(2.5rem, 6vw, 4.5rem); }
.section-head .label { margin-bottom: 1.1rem; }
.section-head p.lead {
  margin-top: 1.2rem;
  max-width: 54ch;
  color: var(--color-fg-muted);
  font-size: 1.06rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  min-height: 52px;
  padding: .85rem 1.9rem;
  background: var(--color-accent);
  color: var(--color-surface);
  font-weight: 600;
  font-size: .98rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.btn:hover {
  background: var(--color-accent-deep);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -14px rgba(142, 65, 32, .55);
}
.btn-light { background: var(--color-surface); color: var(--color-fg); }
.btn-light:hover { background: var(--color-bg); box-shadow: 0 14px 28px -14px rgba(0,0,0,.35); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  min-height: 44px;
  font-weight: 600;
  color: var(--color-accent-deep);
}
.link-arrow svg { transition: transform var(--dur) var(--ease); }
.link-arrow:hover svg { transform: translateX(5px); }

/* Révélation au scroll */
.rv {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
  transition-delay: var(--d, 0s);
}
.rv.in { opacity: 1; transform: none; }

/* ============ NAVIGATION ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.nav.scrolled {
  background: rgba(246, 240, 228, .92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--color-line);
}
.nav-inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  font-family: var(--font-display);
  font-size: 1.28rem;
  font-weight: 600;
  letter-spacing: -.01em;
}
.brand-glyph {
  width: 26px; height: 26px;
  flex-shrink: 0;
  color: var(--color-accent);
}
.brand small {
  display: none;
  font-family: var(--font-body);
  font-size: .68rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-fg-muted);
  margin-top: .25rem;
}
.nav-links { display: none; }
.nav-cta { display: none; }

.burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 48px; height: 48px;
  padding: 12px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 210;
}
.burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
  transform-origin: center;
}
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.burger.open { color: var(--color-on-dark); }

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--color-dark);
  color: var(--color-on-dark);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--gutter);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
}
.mobile-menu.open { opacity: 1; visibility: visible; }
.mobile-menu a {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 7vw, 2.7rem);
  padding: .5rem 0;
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .5s var(--ease), transform .5s var(--ease), color .3s;
}
.mobile-menu.open a { opacity: 1; transform: none; }
.mobile-menu.open a:nth-child(1) { transition-delay: .06s; }
.mobile-menu.open a:nth-child(2) { transition-delay: .12s; }
.mobile-menu.open a:nth-child(3) { transition-delay: .18s; }
.mobile-menu.open a:nth-child(4) { transition-delay: .24s; }
.mobile-menu.open a:nth-child(5) { transition-delay: .3s; }
.mobile-menu.open a:nth-child(6) { transition-delay: .36s; }
.mobile-menu.open a:nth-child(7) { transition-delay: .42s; }
.mobile-menu a:hover { color: #D98B5F; }
.mobile-menu .menu-foot {
  margin-top: 2.5rem;
  font-size: .85rem;
  color: var(--color-on-dark-muted);
  opacity: 0;
  transition: opacity .6s var(--ease) .5s;
}
.mobile-menu.open .menu-foot { opacity: 1; }

/* ============ HERO (accueil) ============ */
.hero {
  position: relative;
  padding-top: calc(var(--nav-h) + clamp(2.5rem, 7vw, 5.5rem));
  padding-bottom: clamp(3.5rem, 8vw, 6rem);
  background:
    radial-gradient(90rem 60rem at 85% -20%, rgba(176, 85, 44, .09), transparent 60%),
    radial-gradient(70rem 50rem at -10% 110%, rgba(176, 85, 44, .06), transparent 55%),
    var(--color-bg);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  gap: clamp(2.5rem, 6vw, 4rem);
  align-items: center;
}
.hero .label { margin-bottom: 1.4rem; }
.hero h1 {
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  max-width: 12ch;
}
.hero .sub {
  margin-top: 1.4rem;
  max-width: 50ch;
  font-size: clamp(1.02rem, 1.4vw, 1.14rem);
  color: var(--color-fg-muted);
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.4rem;
  margin-top: 2.2rem;
}
.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.8rem;
  margin-top: 2.6rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--color-line);
}
.hero-proof li {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-size: .87rem;
  font-weight: 500;
  color: var(--color-fg-muted);
}
.hero-proof svg { color: var(--color-accent); flex-shrink: 0; }

.hero-visual {
  position: relative;
  max-width: 480px;
  margin-inline: auto;
  width: 100%;
}
/* Motif signature n°1 : l’image du hero en arc */
.hero-arch {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-arch);
  overflow: hidden;
  box-shadow: 0 34px 60px -30px rgba(50, 37, 26, .45);
}
.hero-arch img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  transition: transform 1.2s var(--ease);
}
.hero-visual:hover .hero-arch img { transform: scale(1.0); }
/* Arc fantôme décalé — écho du motif */
.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  transform: translate(-16px, -16px);
  border: 1px solid rgba(176, 85, 44, .45);
  border-radius: var(--radius-arch);
  border-bottom: none;
  pointer-events: none;
}
.hero-badge {
  position: absolute;
  left: clamp(-1rem, -3vw, -2.2rem);
  bottom: clamp(1.5rem, 5vw, 3rem);
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1rem 1.3rem;
  box-shadow: 0 18px 40px -18px rgba(50, 37, 26, .4);
  border: 1px solid var(--color-line);
  max-width: 230px;
}
.hero-badge strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 600;
  color: var(--color-accent-deep);
  line-height: 1.1;
}
.hero-badge span {
  display: block;
  margin-top: .3rem;
  font-size: .8rem;
  color: var(--color-fg-muted);
  line-height: 1.45;
}

/* ============ PAGE HERO (sous-pages) ============ */
.page-hero {
  position: relative;
  padding-top: calc(var(--nav-h) + clamp(2.2rem, 6vw, 4rem));
  padding-bottom: clamp(3rem, 7vw, 5rem);
  background:
    radial-gradient(70rem 45rem at 88% -10%, rgba(176, 85, 44, .08), transparent 60%),
    var(--color-bg);
  overflow: hidden;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  font-size: .82rem;
  color: var(--color-fg-muted);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--color-fg-muted); transition: color var(--dur) var(--ease); }
.breadcrumb a:hover { color: var(--color-accent-deep); }
.breadcrumb svg { width: 11px; height: 11px; opacity: .55; }
.breadcrumb span[aria-current] { color: var(--color-accent-deep); font-weight: 600; }
.page-hero h1 {
  font-size: clamp(2.3rem, 5.6vw, 3.8rem);
  max-width: 17ch;
}
.page-hero .sub {
  margin-top: 1.3rem;
  max-width: 58ch;
  font-size: clamp(1rem, 1.3vw, 1.1rem);
  color: var(--color-fg-muted);
}
.page-hero-grid { display: grid; gap: clamp(2rem, 5vw, 3.5rem); align-items: center; }
.page-hero-ctas { display: flex; flex-wrap: wrap; gap: 1.2rem; margin-top: 2rem; }

/* Motif transversal réutilisable : cadre en arc */
.arch-frame {
  position: relative;
  border-radius: var(--radius-arch);
  overflow: hidden;
  box-shadow: 0 28px 50px -28px rgba(50, 37, 26, .4);
  max-width: 460px;
  margin-inline: auto;
}
.arch-frame img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.92); transition: filter .8s var(--ease), transform .8s var(--ease); }
.arch-frame:hover img { filter: saturate(1.05); transform: scale(1.03); }
.arch-frame.ratio-34 { aspect-ratio: 3/4; }
.arch-frame.ratio-43 { aspect-ratio: 4/3; }
.arch-frame.ratio-11 { aspect-ratio: 1/1; }

/* ============ STATS ============ */
.stats {
  background: var(--color-bg-deep);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  padding-block: clamp(2.4rem, 5vw, 3.6rem);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem var(--gutter);
}
.stat .num {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4.5vw, 3.2rem);
  font-weight: 600;
  line-height: 1;
  color: var(--color-fg);
  white-space: nowrap;
}
.stat .num .unit { font-size: .55em; font-weight: 500; color: var(--color-accent-deep); }
.stat p {
  margin-top: .55rem;
  font-size: .87rem;
  color: var(--color-fg-muted);
  max-width: 22ch;
  line-height: 1.5;
}

/* ============ APPROCHE ============ */
.approche { padding-block: var(--section-pad); }
.approche-grid {
  display: grid;
  gap: clamp(2.5rem, 6vw, 5rem);
}
.approche-intro p {
  margin-top: 1.2rem;
  color: var(--color-fg-muted);
  max-width: 46ch;
}
.approche-intro .link-arrow { margin-top: 1.6rem; }
.approche-items {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2rem);
}
.app-item {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.4rem;
  padding: clamp(1.4rem, 3vw, 2rem);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.app-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 44px -24px rgba(50, 37, 26, .35);
  border-color: rgba(176, 85, 44, .4);
}
/* Motif signature n°2 : pastille d’icône en arc */
.app-icon {
  width: 54px; height: 62px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(176, 85, 44, .1);
  border-radius: var(--radius-arch);
  color: var(--color-accent-deep);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.app-item:hover .app-icon { background: var(--color-accent); color: var(--color-surface); }
.app-item h3 { font-size: 1.32rem; }
.app-item p {
  margin-top: .55rem;
  font-size: .95rem;
  color: var(--color-fg-muted);
}
.app-item .figure {
  position: absolute;
  top: 1rem; right: 1.2rem;
  font-family: var(--font-display);
  font-style: italic;
  font-size: .95rem;
  color: rgba(176, 85, 44, .5);
}

/* ============ PLEIN HIVER — rupture pleine largeur ============ */
.winter {
  position: relative;
  height: clamp(420px, 70vh, 640px);
  overflow: hidden;
}
.winter img {
  position: absolute;
  inset: -12% 0;
  width: 100%;
  height: 124%;
  object-fit: cover;
  will-change: transform;
}
.winter::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(78deg, rgba(42, 31, 22, .58), transparent 58%),
    linear-gradient(to top, rgba(42, 31, 22, .82), rgba(42, 31, 22, .18) 52%, rgba(42, 31, 22, 0) 78%);
}
.winter-caption {
  position: absolute;
  z-index: 2;
  left: 0; right: 0;
  bottom: clamp(2rem, 6vw, 4rem);
  color: var(--color-on-dark);
}
.winter-caption .cap-card { max-width: 560px; }
.winter-caption .label { color: var(--color-on-dark); text-shadow: 0 1px 10px rgba(42, 31, 22, .6); }
.winter-caption .label::before { background: #E9A876; }
.winter-caption p.big {
  margin-top: 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  line-height: 1.25;
  text-shadow: 0 2px 18px rgba(42, 31, 22, .55);
}
.winter-caption p.big em { font-style: italic; color: #E9A876; }

/* ============ PROJETS ============ */
.projets { padding-block: var(--section-pad); }
.projets .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
}
.projets-grid, .real-grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.2rem);
}
.proj {
  position: relative;
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-dark);
}
.proj img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
  filter: saturate(.88);
  transform: scale(1.01);
  transition: transform .9s var(--ease), filter .9s var(--ease);
}
.proj.tall img { aspect-ratio: 3 / 4; }
.proj:hover img { transform: scale(1.055); filter: saturate(1.05); }
.proj-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(1.3rem, 3vw, 1.8rem);
  background: linear-gradient(to top, rgba(42, 31, 22, .88) 0%, rgba(42, 31, 22, .25) 45%, transparent 70%);
  color: var(--color-on-dark);
  opacity: .96;
  transition: opacity var(--dur) var(--ease);
}
.proj-overlay .where {
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #E9A876;
}
.proj-overlay h3 {
  margin-top: .35rem;
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
}
.proj-specs {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin-top: .85rem;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--dur) var(--ease) .06s, transform var(--dur) var(--ease) .06s;
}
.proj:hover .proj-specs { opacity: 1; transform: none; }
.proj-specs span {
  font-size: .74rem;
  font-weight: 600;
  padding: .3rem .7rem;
  border: 1px solid rgba(242, 233, 217, .35);
  border-radius: 99px;
  backdrop-filter: blur(4px);
}

/* Filtre de la page listing réalisations */
.real-filter { display: flex; flex-wrap: wrap; gap: .7rem; margin-bottom: clamp(2rem, 4vw, 3rem); }
.real-filter button {
  padding: .55rem 1.2rem; border-radius: 99px; border: 1px solid var(--color-line);
  background: var(--color-surface); font-size: .87rem; font-weight: 600; color: var(--color-fg-muted);
  cursor: pointer; transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.real-filter button.active, .real-filter button:hover { background: var(--color-accent); color: var(--color-surface); border-color: var(--color-accent); }

/* ============ MATÉRIAUX ============ */
.materiaux {
  padding-block: var(--section-pad);
  background: var(--color-bg-deep);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  overflow: hidden;
}
.materiaux.on-light { background: var(--color-bg); border: none; }
.mat-row {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.mat-row + .mat-row { margin-top: clamp(3.5rem, 8vw, 6.5rem); }
.mat-visual {
  position: relative;
  max-width: 420px;
  width: 100%;
  margin-inline: auto;
}
/* Motif signature n°3 : matières cadrées en arc + équerres décoratives */
.mat-visual .arch-img {
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-arch);
  overflow: hidden;
  box-shadow: 0 28px 50px -28px rgba(50, 37, 26, .45);
}
.mat-visual .arch-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(.92);
  transition: filter .8s var(--ease), transform .8s var(--ease);
}
.mat-visual:hover .arch-img img { filter: saturate(1.05); transform: scale(1.03); }
.corner {
  position: absolute;
  width: 30px; height: 30px;
  border-color: var(--color-accent);
  border-style: solid;
  pointer-events: none;
}
.corner.tl { top: -12px; left: -12px; border-width: 1px 0 0 1px; }
.corner.br { bottom: -12px; right: -12px; border-width: 0 1px 1px 0; }
.mat-num {
  position: absolute;
  top: -20px; right: -8px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(3.4rem, 7vw, 4.8rem);
  color: rgba(176, 85, 44, .25);
  line-height: 1;
  pointer-events: none;
}
.mat-text h3 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.mat-text p {
  margin-top: 1rem;
  color: var(--color-fg-muted);
  max-width: 52ch;
}
.mat-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.4rem;
}
.mat-tags span {
  font-size: .78rem;
  font-weight: 600;
  padding: .38rem .85rem;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: 99px;
  color: var(--color-fg-muted);
}

/* ============ PROCESSUS ============ */
.processus { padding-block: var(--section-pad); }
.proc-grid {
  display: grid;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}
.proc-intro p {
  margin-top: 1.2rem;
  color: var(--color-fg-muted);
  max-width: 44ch;
}
.proc-intro .atelier-img {
  position: relative;
  margin-top: 2.2rem;
  max-width: 420px;
}
.proc-intro .atelier-img img {
  border-radius: var(--radius);
  filter: saturate(.92);
}
.steps { counter-reset: step; display: grid; gap: 0; }
.step {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  padding-block: clamp(1.6rem, 3vw, 2.2rem);
}
.step + .step { border-top: 1px solid var(--color-line); }
.step-num {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--color-accent-deep);
  width: 52px; height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(176, 85, 44, .45);
  border-radius: var(--radius-arch); /* motif n°4 */
  flex-shrink: 0;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.step:hover .step-num { background: var(--color-accent); color: var(--color-surface); }
.step h3 { font-size: 1.3rem; }
.step .step-when {
  display: inline-block;
  margin-left: .6rem;
  font-family: var(--font-body);
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-accent-deep);
}
.step p {
  margin-top: .5rem;
  font-size: .95rem;
  color: var(--color-fg-muted);
  max-width: 52ch;
}

/* ============ TÉMOIGNAGES ============ */
.temoignages {
  position: relative;
  padding-block: var(--section-pad);
  background: var(--color-dark);
  color: var(--color-on-dark);
  overflow: hidden;
}
/* Filigrane typographique — « Wunnen » : habiter, en luxembourgeois */
.temoignages::before {
  content: "Wunnen.";
  position: absolute;
  bottom: -6rem;
  right: -2rem;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(9rem, 24vw, 20rem);
  color: rgba(242, 233, 217, .04);
  pointer-events: none;
  line-height: 1;
  white-space: nowrap;
}
.temoignages .section-head p.lead { color: var(--color-on-dark-muted); }
.quotes {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.2rem);
}
.quote {
  position: relative;
  background: var(--color-dark-soft);
  border: 1px solid rgba(242, 233, 217, .1);
  border-radius: var(--radius);
  padding: clamp(1.8rem, 4vw, 2.6rem);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.quote:hover { transform: translateY(-4px); border-color: rgba(217, 139, 95, .45); }
.quote::before {
  content: "«";
  position: absolute;
  top: .4rem; left: 1.2rem;
  font-family: var(--font-display);
  font-size: 4.6rem;
  color: rgba(217, 139, 95, .3);
  line-height: 1;
  pointer-events: none;
}
.quote blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  line-height: 1.45;
  padding-top: 1.6rem;
}
.quote figcaption {
  display: flex;
  align-items: center;
  gap: .9rem;
  margin-top: 1.6rem;
}
/* Motif n°5 : initiales en arc */
.quote .who-badge {
  width: 42px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(217, 139, 95, .16);
  border-radius: var(--radius-arch);
  font-family: var(--font-display);
  font-style: italic;
  font-size: .95rem;
  color: #E9A876;
  flex-shrink: 0;
}
.quote .who strong { display: block; font-size: .95rem; font-weight: 600; }
.quote .who span { font-size: .8rem; color: var(--color-on-dark-muted); }

/* ============ BANDEAU AIDES ============ */
.aides {
  background: var(--color-accent);
  color: var(--color-surface);
  padding-block: clamp(2.8rem, 6vw, 4.2rem);
  position: relative;
  overflow: hidden;
}
.aides::before, .aides::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(252, 249, 241, .22);
  border-radius: var(--radius-arch);
  border-bottom: none;
  pointer-events: none;
}
.aides::before { width: 210px; height: 260px; right: 6%; bottom: -80px; }
.aides::after { width: 130px; height: 170px; right: 17%; bottom: -60px; border-color: rgba(252, 249, 241, .14); }
.aides-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.8rem;
  position: relative;
  z-index: 2;
}
.aides h2 { font-size: clamp(1.5rem, 3.2vw, 2.2rem); max-width: 22ch; }
.aides p {
  margin-top: .7rem;
  max-width: 52ch;
  color: rgba(252, 249, 241, .85);
  font-size: .98rem;
}

/* Grille des types d'aides (page dédiée) */
.aide-grid { display: grid; gap: clamp(1.2rem, 3vw, 1.8rem); }
.aide-card {
  padding: clamp(1.6rem, 3vw, 2.2rem);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.aide-card:hover { transform: translateY(-4px); box-shadow: 0 22px 44px -24px rgba(50,37,26,.35); border-color: rgba(176,85,44,.4); }
.aide-card .tag {
  display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  padding: .3rem .8rem; border-radius: 99px; background: rgba(176,85,44,.1); color: var(--color-accent-deep);
}
.aide-card .amount { font-family: var(--font-display); font-size: clamp(1.7rem, 3vw, 2.2rem); color: var(--color-accent-deep); margin-top: .9rem; }
.aide-card h3 { font-size: 1.2rem; margin-top: .5rem; }
.aide-card p { margin-top: .6rem; color: var(--color-fg-muted); font-size: .93rem; }

/* ============ CONTACT ============ */
.contact { padding-block: var(--section-pad); }
.contact-grid {
  display: grid;
  gap: clamp(2.5rem, 6vw, 4.5rem);
  align-items: start;
}
.form-grid {
  display: grid;
  gap: 1.2rem;
  margin-top: 2rem;
}
.field label {
  display: block;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: .45rem;
}
.field input, .field textarea, .field select {
  width: 100%;
  min-height: 52px;
  padding: .8rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(176, 85, 44, .16);
}
.field ::placeholder { color: #A8977F; }
.form-note {
  font-size: .82rem;
  color: var(--color-fg-muted);
}
.form-success {
  display: none;
  padding: 1rem 1.2rem;
  background: rgba(107, 124, 78, .14);
  border: 1px solid rgba(107, 124, 78, .4);
  border-radius: var(--radius);
  font-size: .92rem;
  color: #4A5638;
}
.form-success.show { display: block; }

.contact-aside {
  background: var(--color-bg-deep);
  border: 1px solid var(--color-line);
  border-radius: var(--radius) var(--radius) 0 0;
  padding: clamp(1.8rem, 4vw, 2.4rem);
  position: relative;
  overflow: hidden;
}
.contact-aside::after {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(to right, var(--color-accent), transparent 70%);
}
.contact-aside h3 { font-size: 1.4rem; margin-bottom: 1.4rem; }
.c-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding-block: .9rem;
}
.c-item + .c-item { border-top: 1px solid var(--color-line); }
.c-item svg { color: var(--color-accent-deep); margin-top: .2rem; flex-shrink: 0; }
.c-item strong { display: block; font-size: .92rem; }
.c-item span, .c-item a.plain {
  font-size: .88rem;
  color: var(--color-fg-muted);
  line-height: 1.5;
}
.c-item a.plain { text-decoration: underline; text-decoration-color: rgba(176, 85, 44, .4); text-underline-offset: 3px; }
.c-item a.plain:hover { color: var(--color-accent-deep); }
.contact-aside .rdv-note {
  margin-top: 1.4rem;
  padding: 1rem 1.2rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  font-size: .86rem;
  color: var(--color-fg-muted);
  border: 1px dashed rgba(176, 85, 44, .4);
}
.contact-aside .map-note {
  margin-top: 1.4rem;
  aspect-ratio: 16/10;
  border-radius: var(--radius);
  border: 1px solid var(--color-line);
  background: var(--color-surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100'%3E%3Cpath d='M0 20h100M0 50h100M0 80h100M20 0v100M50 0v100M80 0v100' stroke='%23B0552C' stroke-opacity='.08'/%3E%3C/svg%3E");
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
  font-size: .82rem;
  color: var(--color-fg-muted);
}

/* ============ PILIERS (maison passive) ============ */
.pillars-grid { display: grid; gap: clamp(1.2rem, 3vw, 1.8rem); }
.pillar {
  position: relative;
  padding: clamp(1.6rem, 3vw, 2.2rem);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.pillar:hover { transform: translateY(-4px); box-shadow: 0 22px 44px -24px rgba(50,37,26,.35); border-color: rgba(176,85,44,.4); }
.pillar .pillar-num {
  width: 54px; height: 62px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(176,85,44,.1);
  border-radius: var(--radius-arch);
  color: var(--color-accent-deep);
  font-family: var(--font-display); font-style: italic; font-size: 1.1rem;
  margin-bottom: 1.1rem;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.pillar:hover .pillar-num { background: var(--color-accent); color: var(--color-surface); }
.pillar h3 { font-size: 1.25rem; }
.pillar p { margin-top: .6rem; font-size: .93rem; color: var(--color-fg-muted); }

/* ============ TABLEAU COMPARATIF ============ */
.compare-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--color-line); }
.compare-table { width: 100%; border-collapse: collapse; min-width: 620px; background: var(--color-surface); }
.compare-table th, .compare-table td { padding: 1rem 1.3rem; text-align: left; font-size: .92rem; border-bottom: 1px solid var(--color-line); vertical-align: top; }
.compare-table thead th { font-family: var(--font-display); font-size: 1.02rem; font-weight: 600; background: var(--color-bg-deep); }
.compare-table td:first-child, .compare-table th:first-child { color: var(--color-fg-muted); font-weight: 500; white-space: nowrap; }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table .yes { color: #4A5638; font-weight: 600; }
.compare-table .highlight-col { background: rgba(176,85,44,.06); }

/* ============ AVANT / APRÈS (rénovation) ============ */
.ba-grid { display: grid; gap: 1rem; }
.ba-item { position: relative; border-radius: var(--radius); overflow: hidden; }
.ba-item img { width: 100%; aspect-ratio: 4/3; object-fit: cover; filter: saturate(.9); }
.ba-tag {
  position: absolute; top: 1rem; left: 1rem;
  font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  padding: .4rem .9rem; border-radius: 99px; backdrop-filter: blur(6px);
}
.ba-tag.before { background: rgba(42,31,22,.7); color: var(--color-on-dark); }
.ba-tag.after { background: var(--color-accent); color: var(--color-surface); }

/* ============ TIMELINE / VALEURS (agence) ============ */
.timeline {
  position: relative;
  padding-left: clamp(1.6rem, 4vw, 2.8rem);
  border-left: 1px solid var(--color-line);
  display: grid;
  gap: clamp(2rem, 4vw, 2.8rem);
}
.timeline-item { position: relative; }
.timeline-item::before {
  content: ""; position: absolute; left: clamp(-1.95rem, -4.6vw, -2.95rem); top: .3rem;
  width: 12px; height: 12px; border-radius: 50%; background: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-bg);
}
.timeline-item .year { font-family: var(--font-display); font-style: italic; color: var(--color-accent-deep); font-size: 1.1rem; }
.timeline-item h3 { margin-top: .3rem; font-size: 1.25rem; }
.timeline-item p { margin-top: .5rem; color: var(--color-fg-muted); max-width: 52ch; font-size: .95rem; }

/* ============ FAQ ============ */
.faq-list { display: grid; gap: 1rem; }
.faq-item { border: 1px solid var(--color-line); border-radius: var(--radius); background: var(--color-surface); overflow: hidden; }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.3rem 1.6rem; text-align: left; background: transparent; border: none; cursor: pointer;
  font-family: var(--font-display); font-size: clamp(1rem, 2vw, 1.12rem); font-weight: 500; color: var(--color-fg);
}
.faq-q .icon { flex-shrink: 0; width: 22px; height: 22px; position: relative; }
.faq-q .icon::before, .faq-q .icon::after { content: ""; position: absolute; background: var(--color-accent-deep); transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease); }
.faq-q .icon::before { left: 0; top: 50%; width: 100%; height: 2px; transform: translateY(-50%); }
.faq-q .icon::after { top: 0; left: 50%; width: 2px; height: 100%; transform: translateX(-50%); }
.faq-item.open .faq-q .icon::after { transform: translateX(-50%) rotate(90deg); opacity: 0; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height var(--dur-slow) var(--ease); }
.faq-a-inner { padding: 0 1.6rem 1.5rem; max-width: 66ch; }
.faq-a p { color: var(--color-fg-muted); font-size: .95rem; }
.faq-item.open .faq-a { max-height: 600px; }
.faq-groups { display: grid; gap: clamp(2.5rem, 5vw, 3.5rem); }
.faq-groups h3 { font-size: 1.1rem; margin-bottom: 1.2rem; color: var(--color-accent-deep); }

/* ============ PAGES LÉGALES ============ */
.legal { padding-block: var(--section-pad); }
.legal-body { max-width: 74ch; }
.legal-body h2 { font-size: 1.4rem; margin-top: 2.6rem; }
.legal-body h2:first-child { margin-top: 0; }
.legal-body p, .legal-body li { color: var(--color-fg-muted); margin-top: .9rem; font-size: .96rem; }
.legal-body ul, .legal-body ol { margin-top: .9rem; padding-left: 1.4rem; }
.legal-body li { list-style: disc; margin-top: .4rem; }
.legal-body ol li { list-style: decimal; }
.legal-body strong { color: var(--color-fg); }
.legal-updated { font-size: .85rem; color: var(--color-fg-muted); margin-bottom: 2.2rem; }

/* ============ GALERIE (détail réalisation) ============ */
.gallery-grid { display: grid; gap: clamp(1rem, 2.5vw, 1.5rem); }
.gallery-grid .g-item { border-radius: var(--radius); overflow: hidden; }
.gallery-grid img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; filter: saturate(.92); transition: filter .8s var(--ease), transform .8s var(--ease); }
.gallery-grid .g-item:hover img { filter: saturate(1.05); transform: scale(1.03); }
.gallery-grid .tall img { aspect-ratio: 3/4; }

/* ============ DÉTAIL RÉALISATION ============ */
.detail-hero { position: relative; }
.detail-hero .arch-frame { max-width: 100%; margin-inline: 0; }
.detail-grid { display: grid; gap: clamp(2.5rem, 6vw, 4rem); align-items: start; }
.detail-narrative p { margin-top: 1.1rem; color: var(--color-fg-muted); max-width: 62ch; }
.detail-narrative h2 { margin-top: 2.4rem; font-size: 1.5rem; }
.detail-narrative h2:first-child { margin-top: 0; }
.detail-sidebar {
  background: var(--color-bg-deep);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: clamp(1.6rem, 3vw, 2.2rem);
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
}
.detail-sidebar h3 { font-size: 1.15rem; margin-bottom: 1.2rem; }
.detail-sidebar .d-item { padding-block: .8rem; }
.detail-sidebar .d-item + .d-item { border-top: 1px solid var(--color-line); }
.detail-sidebar .d-item strong { display: block; font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; color: var(--color-fg-muted); font-weight: 600; }
.detail-sidebar .d-item span { display: block; margin-top: .3rem; font-family: var(--font-display); font-size: 1.1rem; color: var(--color-fg); }
.detail-nav {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap;
  padding-block: clamp(2rem, 4vw, 3rem);
  border-top: 1px solid var(--color-line);
}
.detail-nav a { display: flex; flex-direction: column; gap: .3rem; transition: color var(--dur) var(--ease); }
.detail-nav a:hover { color: var(--color-accent-deep); }
.detail-nav .dn-label { font-size: .74rem; text-transform: uppercase; letter-spacing: .1em; color: var(--color-fg-muted); }
.detail-nav .dn-title { font-family: var(--font-display); font-size: 1.1rem; }
.detail-nav .next { text-align: right; margin-left: auto; }

/* ============ FOOTER ============ */
.footer {
  background: var(--color-dark);
  color: var(--color-on-dark);
  padding-top: clamp(3.5rem, 7vw, 5.5rem);
}
.footer-grid {
  display: grid;
  gap: 2.5rem;
  padding-bottom: 3rem;
}
.footer .brand { color: var(--color-on-dark); }
.footer .brand-glyph { color: #D98B5F; }
.footer .baseline {
  margin-top: 1rem;
  font-size: .9rem;
  color: var(--color-on-dark-muted);
  max-width: 30ch;
  line-height: 1.6;
}
.footer h4 {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--color-on-dark-muted);
  margin-bottom: 1.1rem;
}
.footer li { padding-block: .3rem; }
.footer li a, .footer li span {
  font-size: .92rem;
  color: rgba(242, 233, 217, .82);
  position: relative;
}
.footer li a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -3px;
  width: 0; height: 1px;
  background: #D98B5F;
  transition: width var(--dur) var(--ease);
}
.footer li a:hover::after { width: 100%; }
.footer-bar {
  border-top: 1px solid rgba(242, 233, 217, .12);
  padding-block: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: .8rem;
  color: var(--color-on-dark-muted);
}
.footer-bar .legal-links { display: flex; gap: 1.2rem; }
.footer-bar a { color: var(--color-on-dark-muted); transition: color var(--dur) var(--ease); }
.footer-bar a:hover { color: var(--color-on-dark); }
.footer-bar .arch-mini {
  display: inline-block;
  width: 14px; height: 9px;
  border: 1px solid #D98B5F;
  border-bottom: none;
  border-radius: 99px 99px 0 0;
  margin-right: .5rem;
  vertical-align: baseline;
}

/* ============ BREAKPOINTS ============ */
@media (min-width: 768px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .hero-grid { grid-template-columns: 7fr 5fr; }
  .hero-visual { margin-inline: 0 0; margin-left: auto; }
  .page-hero-grid { grid-template-columns: 6fr 6fr; }
  .approche-grid { grid-template-columns: 5fr 7fr; }
  .approche-intro { position: sticky; top: calc(var(--nav-h) + 2rem); align-self: start; }
  .projets-grid, .real-grid { grid-template-columns: repeat(12, 1fr); }
  .proj.w7 { grid-column: span 7; }
  .proj.w5 { grid-column: span 5; }
  .proj.w6 { grid-column: span 6; }
  .proj.push { margin-top: 3rem; } /* cartes décalées — rythme organique */
  .proj.pull { margin-top: -3rem; }
  .mat-row { grid-template-columns: 5fr 7fr; }
  .mat-row.flip .mat-visual { order: 2; }
  .mat-row.flip .mat-text { order: 1; }
  .proc-grid { grid-template-columns: 5fr 7fr; }
  .quotes { grid-template-columns: 1fr 1fr; }
  .quote.offset { margin-top: 3rem; } /* asymétrie éditoriale */
  .quote.wide { grid-column: 1 / -1; max-width: 640px; margin-inline: auto; }
  .contact-grid { grid-template-columns: 7fr 5fr; }
  .form-grid { grid-template-columns: 1fr 1fr; }
  .field.full { grid-column: 1 / -1; }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.2fr; }
  .brand small { display: block; }
  .pillars-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline { padding-left: 2.8rem; }
  .ba-grid { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid .wide { grid-column: 1 / -1; }
  .aide-grid { grid-template-columns: repeat(3, 1fr); }
  .detail-grid { grid-template-columns: 7fr 5fr; }
  .faq-groups { grid-template-columns: 1fr; }
}

@media (min-width: 1024px) {
  .nav-links {
    display: flex;
    align-items: center;
    gap: 1.9rem;
  }
  .nav-links a {
    position: relative;
    font-size: .91rem;
    font-weight: 500;
    padding: .5rem 0;
    white-space: nowrap;
  }
  .nav-links a::after {
    content: "";
    position: absolute;
    left: 0; bottom: 2px;
    width: 0; height: 1.5px;
    background: var(--color-accent);
    transition: width var(--dur) var(--ease);
  }
  .nav-links a:hover::after, .nav-links a[aria-current="page"]::after { width: 100%; }
  .nav-links a[aria-current="page"] { color: var(--color-accent-deep); }
  .nav-cta {
    display: inline-flex;
    min-height: 44px;
    padding: .6rem 1.4rem;
    font-size: .9rem;
  }
  .burger { display: none; }
  .pillars-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .rv { opacity: 1; transform: none; }
  .winter img { transform: none !important; }
}