/* ==========================================================================
   Julien Jimenez, studio web
   Feuille de style unique. Aucune dependance externe, polices systeme.
   Palette : corail, corail clair, noir, blanc casse, gris, blanc, bordures.
   ========================================================================== */

:root {
  /* Couleurs */
  --corail: #F43F5E;
  --corail-clair: #FDA4AF;
  --corail-sombre: #C22A45;
  --noir: #111014;
  --noir-doux: #1C1A20;
  --blanc-casse: #FFF7F7;
  --gris: #57534E;
  --gris-clair: #8A827C;
  --fond: #FFFFFF;
  --bordure: #F1E5E5;
  --bordure-forte: #E4D2D2;

  /* Typographie */
  --font-titre: "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-texte: "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  /* Echelle fluide */
  --fs-xxl: clamp(2.5rem, 1.4rem + 4.6vw, 5rem);
  --fs-xl: clamp(1.9rem, 1.25rem + 2.6vw, 3.25rem);
  --fs-lg: clamp(1.35rem, 1.1rem + 1vw, 1.85rem);
  --fs-md: clamp(1.05rem, 1rem + 0.28vw, 1.2rem);
  --fs-sm: 0.95rem;
  --fs-xs: 0.8rem;

  /* Espacements */
  --sp-1: 0.35rem;
  --sp-2: 0.7rem;
  --sp-3: 1.1rem;
  --sp-4: 1.6rem;
  --sp-5: 2.4rem;
  --sp-6: 3.4rem;
  --sp-7: 5rem;
  --sp-8: 7rem;

  /* Rayons */
  --r-xs: 4px;
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;

  /* Ombres */
  --sh-douce: 0 2px 8px rgba(17, 16, 20, 0.05);
  --sh-carte: 0 14px 34px -18px rgba(17, 16, 20, 0.35);
  --sh-corail: 10px 10px 0 var(--corail-clair);
  --sh-corail-forte: 14px 14px 0 var(--corail);
  --sh-profonde: 0 30px 70px -32px rgba(17, 16, 20, 0.55);

  /* Transitions */
  --tr-rapide: 160ms cubic-bezier(0.33, 1, 0.68, 1);
  --tr-moyen: 320ms cubic-bezier(0.33, 1, 0.68, 1);
  --tr-lent: 620ms cubic-bezier(0.22, 1, 0.36, 1);

  /* Largeur */
  --shell: 1180px;
}

/* ==========================================================================
   Base
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--fond);
  color: var(--noir);
  font-family: var(--font-texte);
  font-size: var(--fs-md);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--corail-sombre);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--tr-rapide);
}

a:hover { color: var(--noir); }

h1, h2, h3, h4 {
  font-family: var(--font-titre);
  line-height: 1.06;
  letter-spacing: -0.032em;
  margin: 0 0 var(--sp-3);
  font-weight: 800;
}

h1 { font-size: var(--fs-xxl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); letter-spacing: -0.02em; line-height: 1.2; }

p { margin: 0 0 var(--sp-3); }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0; padding: 0; }

strong { font-weight: 700; }

::selection {
  background: var(--corail);
  color: #FFFFFF;
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(1.1rem, 4vw, 2.6rem);
}

/* Accessibilite */

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 200;
  background: var(--noir);
  color: #FFFFFF;
  padding: 0.75rem 1.2rem;
  border-radius: var(--r-sm);
  font-weight: 700;
  text-decoration: none;
  transition: top var(--tr-rapide);
}

.skip-link:focus { top: 1rem; color: #FFFFFF; }

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

/* ==========================================================================
   Formes geometriques de fond
   ========================================================================== */

.deco {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.deco-shape {
  position: absolute;
  display: block;
  opacity: 0.5;
}

.deco-1 {
  width: 380px;
  height: 380px;
  border: 2px solid var(--bordure-forte);
  border-radius: 50%;
  top: 8vh;
  right: -140px;
}

.deco-2 {
  width: 220px;
  height: 220px;
  background: linear-gradient(135deg, var(--blanc-casse), transparent);
  transform: rotate(24deg);
  top: 62vh;
  left: -90px;
  border-radius: var(--r-lg);
}

.deco-3 {
  width: 0;
  height: 0;
  border-left: 90px solid transparent;
  border-right: 90px solid transparent;
  border-bottom: 150px solid var(--blanc-casse);
  top: 30vh;
  left: 6vw;
  opacity: 0.7;
}

.deco-4 {
  width: 160px;
  height: 160px;
  border: 2px dashed var(--corail-clair);
  bottom: 10vh;
  right: 8vw;
  opacity: 0.35;
  transform: rotate(12deg);
}

/* ==========================================================================
   En tete et navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--bordure);
  transition: box-shadow var(--tr-moyen), background var(--tr-moyen);
}

.site-header.is-scrolled {
  box-shadow: 0 10px 28px -22px rgba(17, 16, 20, 0.6);
  background: rgba(255, 255, 255, 0.97);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  min-height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--noir);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--noir);
  color: #FFFFFF;
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  position: relative;
  transition: transform var(--tr-moyen);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: auto -5px -5px auto;
  width: 14px;
  height: 14px;
  background: var(--corail);
  border-radius: 4px;
  transition: transform var(--tr-moyen);
}

.brand:hover .brand-mark { transform: translateY(-2px); }
.brand:hover .brand-mark::after { transform: rotate(45deg) scale(1.1); }

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 1.02rem; letter-spacing: -0.02em; }
.brand-text span { font-size: 0.72rem; color: var(--gris); letter-spacing: 0.06em; text-transform: uppercase; }

.site-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.site-nav a {
  display: inline-block;
  padding: 0.5rem 0.7rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gris);
  text-decoration: none;
  border-radius: var(--r-xs);
  position: relative;
  transition: color var(--tr-rapide), background var(--tr-rapide);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0.7rem;
  right: 0.7rem;
  bottom: 0.28rem;
  height: 2px;
  background: var(--corail);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--tr-moyen);
}

.site-nav a:hover { color: var(--noir); }
.site-nav a:hover::after { transform: scaleX(1); }

.site-nav a.is-active { color: var(--noir); }
.site-nav a.is-active::after { transform: scaleX(1); }

.site-nav .nav-cta {
  background: var(--noir);
  color: #FFFFFF;
  padding: 0.6rem 1.05rem;
  border-radius: 999px;
  margin-left: 0.4rem;
}

.site-nav .nav-cta::after { display: none; }
.site-nav .nav-cta:hover { background: var(--corail); color: #FFFFFF; }
/* Le bouton d'appel garde son texte blanc meme quand le scrollspy l'active */
.site-nav a.nav-cta.is-active { color: #FFFFFF; background: var(--corail); }

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--bordure-forte);
  background: var(--fond);
  border-radius: 12px;
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--noir);
  transition: transform var(--tr-moyen), opacity var(--tr-rapide);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: transparent;
}

.scroll-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--corail), var(--corail-clair));
  transition: width 90ms linear;
}

/* ==========================================================================
   Boutons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.6rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--tr-rapide), background var(--tr-rapide), color var(--tr-rapide), box-shadow var(--tr-moyen);
}

.btn-primary {
  background: var(--corail);
  color: #FFFFFF;
  box-shadow: 0 12px 26px -14px var(--corail);
}

.btn-primary:hover {
  background: var(--noir);
  color: #FFFFFF;
  transform: translateY(-3px);
  box-shadow: 0 18px 32px -16px rgba(17, 16, 20, 0.6);
}

.btn-ghost {
  border-color: var(--noir);
  color: var(--noir);
  background: transparent;
}

.btn-ghost:hover {
  background: var(--noir);
  color: #FFFFFF;
  transform: translateY(-3px);
}

/* ==========================================================================
   Sections generiques
   ========================================================================== */

main { position: relative; z-index: 1; }

.section {
  padding-block: clamp(3.4rem, 7vw, var(--sp-8));
  position: relative;
}

.section-alt { background: var(--blanc-casse); }

.section-dark {
  background: var(--noir);
  color: var(--blanc-casse);
}

.section-dark h2, .section-dark h3 { color: #FFFFFF; }
.section-dark .section-intro { color: rgba(255, 247, 247, 0.78); }
.section-dark .section-num { color: var(--corail-clair); }

.section-head {
  max-width: 62ch;
  margin-bottom: clamp(2rem, 4vw, var(--sp-6));
}

.section-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  color: var(--corail);
  margin: 0 0 var(--sp-2);
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.section-num::after {
  content: "";
  height: 1px;
  width: 54px;
  background: var(--corail-clair);
}

.section-intro {
  font-size: 1.03rem;
  color: var(--gris);
  line-height: 1.75;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--corail-sombre);
  background: var(--blanc-casse);
  border: 1px solid var(--bordure);
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  margin: 0 0 var(--sp-4);
}

.eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--corail);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.35); opacity: 0.55; }
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding-block: clamp(2.6rem, 6vw, 5.5rem) clamp(3rem, 7vw, 6rem);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -180px;
  left: 50%;
  width: 900px;
  height: 900px;
  transform: translateX(-30%);
  background: radial-gradient(circle at center, rgba(253, 164, 175, 0.22), transparent 62%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  gap: clamp(2.4rem, 5vw, 4rem);
  align-items: center;
  position: relative;
}

.hero h1 em {
  font-style: normal;
  color: var(--corail);
  position: relative;
  white-space: nowrap;
}

.hero h1 em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.06em;
  height: 0.14em;
  background: var(--corail-clair);
  opacity: 0.5;
  transform: scaleX(0);
  transform-origin: left;
  animation: souligne 900ms 500ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes souligne { to { transform: scaleX(1); } }

.lead {
  font-size: clamp(1.05rem, 1rem + 0.4vw, 1.2rem);
  color: var(--gris);
}

.hero-copy > p:not(.lead):not(.eyebrow) { color: var(--gris); }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: var(--sp-4);
}

.hero-stats {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  margin-top: var(--sp-5);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--bordure);
}

.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong {
  font-size: 1.65rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
}
.hero-stats span { font-size: 0.8rem; color: var(--gris); margin-top: 0.25rem; }

/* Composition visuelle du hero */

.hero-visual {
  position: relative;
  display: grid;
  gap: var(--sp-4);
}

/* Maquette de navigateur dessinee en CSS */

.browser {
  background: var(--fond);
  border: 1px solid var(--bordure-forte);
  border-radius: var(--r-md);
  box-shadow: var(--sh-profonde);
  overflow: hidden;
  position: relative;
  transform: perspective(1400px) rotateY(-5deg) rotateX(2deg);
  transition: transform var(--tr-lent);
}

.browser:hover { transform: perspective(1400px) rotateY(0deg) rotateX(0deg); }

.browser-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.6rem 0.8rem;
  background: var(--blanc-casse);
  border-bottom: 1px solid var(--bordure);
}

.browser-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--bordure-forte);
}
.browser-dot:first-child { background: var(--corail); }
.browser-dot:nth-child(2) { background: var(--corail-clair); }

.browser-url {
  flex: 1;
  margin-left: 0.6rem;
  background: var(--fond);
  border: 1px solid var(--bordure);
  border-radius: 999px;
  font-size: 0.68rem;
  color: var(--gris);
  padding: 0.28rem 0.7rem;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  letter-spacing: 0.01em;
}

.browser-lock {
  width: 7px;
  height: 9px;
  border: 1.5px solid var(--gris-clair);
  border-radius: 2px;
  position: relative;
  flex: none;
}

.browser-lock::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 1px;
  width: 5px;
  height: 5px;
  border: 1.5px solid var(--gris-clair);
  border-bottom: 0;
  border-radius: 3px 3px 0 0;
}

.browser-refresh {
  width: 12px;
  height: 12px;
  border: 1.6px solid var(--gris-clair);
  border-top-color: transparent;
  border-radius: 50%;
  animation: tourne 3.2s linear infinite;
}

@keyframes tourne { to { transform: rotate(360deg); } }

.browser-load {
  height: 2px;
  background: var(--bordure);
  overflow: hidden;
}

.browser-load span {
  display: block;
  height: 100%;
  width: 40%;
  background: var(--corail);
  animation: chargement 3.6s cubic-bezier(0.5, 0, 0.2, 1) infinite;
}

@keyframes chargement {
  0% { transform: translateX(-100%); width: 30%; }
  55% { transform: translateX(120%); width: 60%; }
  56%, 100% { transform: translateX(320%); width: 0; }
}

.browser-body {
  padding: 1.1rem;
  display: grid;
  gap: 0.9rem;
  background: linear-gradient(180deg, var(--fond), var(--blanc-casse));
}

.mock-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mock-logo {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--noir);
  flex: none;
}

.mock-link {
  height: 6px;
  width: 34px;
  border-radius: 3px;
  background: var(--bordure-forte);
}
.mock-link:nth-of-type(3) { width: 46px; }

.mock-btn {
  margin-left: auto;
  height: 18px;
  width: 58px;
  border-radius: 999px;
  background: var(--corail);
}

.mock-hero {
  display: grid;
  gap: 0.42rem;
  padding: 0.7rem 0 0.3rem;
}

.mock-title {
  height: 13px;
  border-radius: 4px;
  background: var(--noir);
  width: 88%;
  transform-origin: left;
  animation: apparait 3.6s ease-in-out infinite;
}
.mock-title.short { width: 58%; animation-delay: 140ms; }

.mock-text {
  height: 7px;
  border-radius: 4px;
  background: var(--bordure-forte);
  width: 92%;
  transform-origin: left;
  animation: apparait 3.6s ease-in-out infinite;
  animation-delay: 280ms;
}
.mock-text:last-of-type { width: 70%; animation-delay: 380ms; }

.mock-cta {
  height: 22px;
  width: 96px;
  border-radius: 999px;
  background: var(--noir);
  margin-top: 0.35rem;
  animation: apparait 3.6s ease-in-out infinite;
  animation-delay: 500ms;
}

@keyframes apparait {
  0%, 8% { transform: scaleX(0.02); opacity: 0.2; }
  26%, 92% { transform: scaleX(1); opacity: 1; }
  100% { transform: scaleX(0.02); opacity: 0.2; }
}

.mock-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.mock-card {
  height: 46px;
  border-radius: var(--r-sm);
  background: var(--fond);
  border: 1px solid var(--bordure);
  box-shadow: var(--sh-douce);
  animation: monte 3.6s ease-in-out infinite;
}
.mock-card:nth-child(2) { animation-delay: 160ms; }
.mock-card:nth-child(3) { animation-delay: 320ms; }

@keyframes monte {
  0%, 14% { transform: translateY(10px); opacity: 0; }
  34%, 92% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(10px); opacity: 0; }
}

.mock-metrics {
  display: grid;
  gap: 0.38rem;
  padding-top: 0.2rem;
}

.mock-metric {
  display: block;
  height: 6px;
  border-radius: 3px;
  background: var(--bordure);
  overflow: hidden;
}

.mock-metric i {
  display: block;
  height: 100%;
  width: var(--w);
  background: linear-gradient(90deg, var(--corail), var(--corail-clair));
  transform-origin: left;
  animation: remplit 3.6s cubic-bezier(0.22, 1, 0.36, 1) infinite;
}
.mock-metric:nth-child(2) i { animation-delay: 200ms; }
.mock-metric:nth-child(3) i { animation-delay: 400ms; }

@keyframes remplit {
  0%, 20% { transform: scaleX(0); }
  60%, 92% { transform: scaleX(1); }
  100% { transform: scaleX(0); }
}

/* Portrait dans une composition geometrique */

.portrait {
  margin: 0;
  position: relative;
  width: min(320px, 78%);
  justify-self: end;
  margin-top: -2.2rem;
  z-index: 2;
}

.portrait img {
  width: 100%;
  border-radius: var(--r-md);
  border: 4px solid var(--fond);
  box-shadow: var(--sh-corail-forte), var(--sh-carte);
  position: relative;
  z-index: 2;
  transition: transform var(--tr-lent), box-shadow var(--tr-lent);
}

.portrait:hover img {
  transform: translate(4px, 4px);
  box-shadow: 6px 6px 0 var(--corail), var(--sh-carte);
}

.portrait-block {
  position: absolute;
  display: block;
  z-index: 1;
}

.portrait-block-a {
  width: 84px;
  height: 84px;
  border: 3px solid var(--noir);
  border-radius: var(--r-sm);
  top: -22px;
  left: -22px;
  transform: rotate(-8deg);
}

.portrait-block-b {
  width: 60px;
  height: 60px;
  background: var(--noir);
  border-radius: 50%;
  bottom: 28px;
  left: -26px;
}

.portrait figcaption {
  font-size: 0.76rem;
  color: var(--gris);
  margin-top: 0.85rem;
  line-height: 1.5;
  position: relative;
  z-index: 2;
  padding-left: 0.8rem;
  border-left: 2px solid var(--corail);
}

/* ==========================================================================
   Section 02 : criteres
   ========================================================================== */

.crit-grid {
  display: grid;
  gap: var(--sp-3);
  grid-template-columns: 1fr;
}

.crit-card {
  background: var(--fond);
  border: 1px solid var(--bordure);
  border-radius: var(--r-md);
  padding: var(--sp-4);
  position: relative;
  overflow: hidden;
  transition: transform var(--tr-moyen), box-shadow var(--tr-moyen), border-color var(--tr-moyen);
}

.crit-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--corail);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--tr-moyen);
}

.crit-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--sh-carte);
  border-color: var(--corail-clair);
}

.crit-card:hover::before { transform: scaleX(1); }

.crit-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--corail);
  display: block;
  margin-bottom: 0.6rem;
}

.crit-card h3 { font-size: 1.22rem; }
.crit-card p { color: var(--gris); font-size: 0.98rem; margin: 0; }

/* ==========================================================================
   Section 03 : carrousel des etapes
   ========================================================================== */

.carousel { position: relative; }

.carousel-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(272px, 33%);
  gap: var(--sp-3);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding-bottom: var(--sp-3);
  scrollbar-width: thin;
  scrollbar-color: var(--corail-clair) var(--bordure);
}

.carousel-track::-webkit-scrollbar { height: 6px; }
.carousel-track::-webkit-scrollbar-track { background: var(--bordure); border-radius: 999px; }
.carousel-track::-webkit-scrollbar-thumb { background: var(--corail-clair); border-radius: 999px; }

.step-card {
  scroll-snap-align: start;
  background: var(--fond);
  border: 1px solid var(--bordure);
  border-radius: var(--r-md);
  padding: var(--sp-4);
  display: flex;
  flex-direction: column;
  transition: transform var(--tr-moyen), box-shadow var(--tr-moyen);
}

.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--sh-corail);
}

/* Selecteur porte a deux classes pour passer devant la regle .step-card p,
   qui imposait sinon un gris illisible sur la pastille noire. */
.step-card .step-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #FFFFFF;
  background: var(--noir);
  display: inline-block;
  align-self: flex-start;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  margin-bottom: var(--sp-3);
}

.step-card h3 { font-size: 1.2rem; }
.step-card p { color: var(--gris); font-size: 0.96rem; }

.step-out {
  margin-top: auto;
  padding-top: var(--sp-3);
  border-top: 1px dashed var(--bordure-forte);
  font-size: 0.86rem;
}

.step-out strong { color: var(--corail-sombre); }

.carousel-controls {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-top: var(--sp-3);
}

.carousel-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 2px solid var(--noir);
  background: transparent;
  color: var(--noir);
  font-size: 1.1rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background var(--tr-rapide), color var(--tr-rapide), transform var(--tr-rapide);
}

.carousel-btn:hover { background: var(--noir); color: #FFFFFF; transform: translateY(-2px); }
.carousel-btn[disabled] { opacity: 0.3; cursor: not-allowed; transform: none; }

.carousel-dots {
  display: flex;
  gap: 6px;
  margin-left: auto;
}

.carousel-dots i {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bordure-forte);
  transition: background var(--tr-rapide), width var(--tr-rapide);
}

.carousel-dots i.is-on { background: var(--corail); width: 24px; border-radius: 999px; }

/* ==========================================================================
   Section 04 : architecture
   ========================================================================== */

.arch-grid {
  display: grid;
  gap: var(--sp-5);
}

.tree-wrap {
  background: var(--blanc-casse);
  border: 1px solid var(--bordure);
  border-radius: var(--r-md);
  padding: var(--sp-4);
}

.tree-legend {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gris);
  margin-bottom: var(--sp-3);
}

.tree, .tree ul { list-style: none; }

.tree ul {
  margin-left: 1.1rem;
  padding-left: 1.1rem;
  border-left: 2px solid var(--bordure-forte);
}

.tree li { position: relative; padding: 0.24rem 0; }

.tree ul > li::before {
  content: "";
  position: absolute;
  left: -1.1rem;
  top: 1.05rem;
  width: 0.9rem;
  height: 2px;
  background: var(--bordure-forte);
}

.node {
  display: inline-block;
  padding: 0.34rem 0.85rem;
  border-radius: var(--r-xs);
  font-size: 0.88rem;
  font-weight: 600;
  border: 1px solid var(--bordure-forte);
  background: var(--fond);
  transition: transform var(--tr-rapide), background var(--tr-rapide), color var(--tr-rapide), border-color var(--tr-rapide);
}

.node:hover { transform: translateX(4px); border-color: var(--corail); }

.node-root { background: var(--noir); color: #FFFFFF; border-color: var(--noir); }
.node-1 { border-color: var(--corail); color: var(--corail-sombre); }
.node-2 { color: var(--gris); }

.arch-notes {
  display: grid;
  gap: var(--sp-3);
}

.note-card {
  border-left: 3px solid var(--corail);
  padding: 0.2rem 0 0.2rem var(--sp-3);
  transition: border-color var(--tr-moyen), transform var(--tr-moyen);
}

.note-card:hover { border-color: var(--noir); transform: translateX(4px); }
.note-card h3 { font-size: 1.08rem; margin-bottom: 0.45rem; }
.note-card p { color: var(--gris); font-size: 0.96rem; }

/* ==========================================================================
   Section 05 : performance
   ========================================================================== */

.gauges {
  display: grid;
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
}

.gauge {
  background: var(--noir-doux);
  border: 1px solid rgba(255, 247, 247, 0.12);
  border-radius: var(--r-md);
  padding: var(--sp-4);
  transition: transform var(--tr-moyen), border-color var(--tr-moyen);
}

.gauge:hover { transform: translateY(-5px); border-color: var(--corail); }

.gauge h3 {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  color: var(--corail-clair);
  margin-bottom: 0.3rem;
}

.gauge-label {
  font-size: 0.85rem;
  color: rgba(255, 247, 247, 0.65);
  margin-bottom: var(--sp-3);
}

.gauge-value {
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: var(--sp-3);
  color: #FFFFFF;
  font-variant-numeric: tabular-nums;
}

.gauge-bar {
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 247, 247, 0.14);
  overflow: hidden;
}

.gauge-bar span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--corail), var(--corail-clair));
  transition: width 1500ms cubic-bezier(0.22, 1, 0.36, 1);
}

.gauge-note {
  font-size: 0.8rem;
  color: rgba(255, 247, 247, 0.55);
  margin-top: var(--sp-3);
  margin-bottom: 0;
}

.perf-split {
  display: grid;
  gap: var(--sp-5);
  align-items: start;
}

.causes {
  list-style: none;
  counter-reset: cause;
  display: grid;
  gap: 0.9rem;
  margin-top: var(--sp-3);
}

.causes li {
  counter-increment: cause;
  position: relative;
  padding-left: 2.4rem;
  font-size: 0.96rem;
  color: rgba(255, 247, 247, 0.76);
}

.causes li::before {
  content: counter(cause, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--corail);
  border: 1px solid rgba(244, 63, 94, 0.5);
  border-radius: 4px;
  padding: 0.05rem 0.28rem;
}

.causes strong { color: #FFFFFF; }

.perf-quote {
  margin-top: var(--sp-4);
  padding: var(--sp-3) var(--sp-4);
  border-left: 3px solid var(--corail);
  background: rgba(244, 63, 94, 0.08);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 1.02rem;
  color: var(--blanc-casse);
}

.perf-figure { margin: 0; }

.perf-figure img {
  border-radius: var(--r-md);
  border: 1px solid rgba(255, 247, 247, 0.16);
  filter: saturate(0.85) contrast(1.05);
  transition: filter var(--tr-lent), transform var(--tr-lent);
}

.perf-figure:hover img { filter: saturate(1) contrast(1); transform: scale(1.01); }

.perf-figure figcaption,
.tech-figure figcaption {
  font-size: 0.8rem;
  margin-top: 0.7rem;
  padding-left: 0.8rem;
  border-left: 2px solid var(--corail);
  line-height: 1.5;
}

.perf-figure figcaption { color: rgba(255, 247, 247, 0.6); }

/* ==========================================================================
   Section 06 : refonte
   ========================================================================== */

.precautions {
  display: grid;
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
}

.prec {
  background: var(--fond);
  border: 1px solid var(--bordure);
  border-radius: var(--r-md);
  padding: var(--sp-4);
  position: relative;
  transition: transform var(--tr-moyen), box-shadow var(--tr-moyen);
}

.prec:hover { transform: translate(-4px, -4px); box-shadow: var(--sh-corail); }

.prec-n {
  position: absolute;
  top: -14px;
  left: var(--sp-4);
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--corail);
  color: #FFFFFF;
  font-weight: 800;
  font-size: 0.85rem;
}

.prec h3 { font-size: 1.05rem; margin-top: 0.5rem; margin-bottom: 0.45rem; }
.prec p { color: var(--gris); font-size: 0.93rem; }

.redir {
  background: var(--blanc-casse);
  border: 1px solid var(--bordure);
  border-radius: var(--r-md);
  padding: var(--sp-4);
}

.redir h3 { font-size: 1.2rem; }
.redir > p { color: var(--gris); font-size: 0.95rem; }

.table-wrap {
  overflow-x: auto;
  margin-top: var(--sp-3);
  border-radius: var(--r-sm);
  border: 1px solid var(--bordure-forte);
  background: var(--fond);
}

table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.88rem;
}

caption {
  text-align: left;
  padding: 0.7rem 0.9rem;
  font-size: 0.78rem;
  color: var(--gris);
  border-bottom: 1px solid var(--bordure);
}

th, td {
  text-align: left;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--bordure);
}

thead th {
  background: var(--noir);
  color: #FFFFFF;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

tbody tr { transition: background var(--tr-rapide); }
tbody tr:hover { background: var(--blanc-casse); }
tbody td:first-child, tbody td:nth-child(2) { font-family: var(--font-mono); font-size: 0.8rem; }
tbody td:nth-child(3) { font-weight: 700; color: var(--corail-sombre); }

/* ==========================================================================
   Section 07 : technologies
   ========================================================================== */

.tech-layout { display: grid; gap: var(--sp-5); }

.tech-grid {
  display: grid;
  gap: var(--sp-3);
  grid-template-columns: 1fr;
}

.tech {
  border: 1px solid var(--bordure);
  background: var(--fond);
  border-radius: var(--r-md);
  padding: var(--sp-4);
  position: relative;
  transition: transform var(--tr-moyen), box-shadow var(--tr-moyen), background var(--tr-moyen);
}

.tech::after {
  content: "";
  position: absolute;
  right: var(--sp-4);
  top: var(--sp-4);
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--corail-clair);
  transition: transform var(--tr-moyen), background var(--tr-moyen);
}

.tech:hover { transform: translateY(-6px); box-shadow: var(--sh-carte); }
.tech:hover::after { transform: rotate(45deg) scale(1.2); background: var(--corail); }

.tech h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.tech p { color: var(--gris); font-size: 0.93rem; }

.tech-tag {
  margin-top: var(--sp-3);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--corail-sombre);
}

.tech-figure { margin: 0; }

.tech-figure img {
  border-radius: var(--r-md);
  border: 4px solid var(--fond);
  box-shadow: var(--sh-corail);
  transition: transform var(--tr-lent), box-shadow var(--tr-lent);
}

.tech-figure:hover img { transform: translate(4px, 4px); box-shadow: 6px 6px 0 var(--corail-clair); }
.tech-figure figcaption { color: var(--gris); }

/* ==========================================================================
   Section 08 : erreurs
   ========================================================================== */

.err-list {
  display: grid;
  gap: var(--sp-3);
}

.err {
  border: 1px solid var(--bordure);
  border-radius: var(--r-md);
  padding: var(--sp-4);
  background: var(--fond);
  position: relative;
  overflow: hidden;
  transition: transform var(--tr-moyen), border-color var(--tr-moyen), box-shadow var(--tr-moyen);
}

.err::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--bordure-forte);
  transition: background var(--tr-moyen);
}

.err:hover { transform: translateY(-5px); border-color: var(--corail-clair); box-shadow: var(--sh-carte); }
.err:hover::before { background: var(--corail); }

.err h3 {
  font-size: 1.05rem;
  margin-bottom: 0.65rem;
  padding-left: 0.6rem;
}

.err-fix {
  font-size: 0.93rem;
  color: var(--gris);
  padding-left: 0.6rem;
  margin: 0;
}

.err-fix span {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 800;
  color: #FFFFFF;
  background: var(--corail);
  padding: 0.14rem 0.5rem;
  border-radius: 999px;
  margin-right: 0.5rem;
  vertical-align: 2px;
}

/* ==========================================================================
   Section 09 : check-list
   ========================================================================== */

.checklist-wrap { display: grid; gap: var(--sp-4); align-items: start; }

.check-progress {
  background: var(--fond);
  border: 1px solid var(--bordure);
  border-radius: var(--r-md);
  padding: var(--sp-4);
  position: sticky;
  top: 100px;
}

.check-progress > p:first-child {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-3);
}

#check-count { color: var(--corail); font-variant-numeric: tabular-nums; }

.check-bar {
  height: 10px;
  border-radius: 999px;
  background: var(--bordure);
  overflow: hidden;
}

.check-bar span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--corail), var(--corail-clair));
  transition: width var(--tr-moyen);
}

.check-msg {
  font-size: 0.85rem;
  color: var(--gris);
  margin-top: var(--sp-3);
  margin-bottom: 0;
}

.checklist { list-style: none; display: grid; gap: 0.55rem; }

.check-item {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  text-align: left;
  background: var(--fond);
  border: 1px solid var(--bordure);
  border-radius: var(--r-sm);
  padding: 0.85rem 1rem;
  font: inherit;
  font-size: 0.93rem;
  color: var(--gris);
  cursor: pointer;
  transition: border-color var(--tr-rapide), background var(--tr-rapide), transform var(--tr-rapide);
}

.check-item:hover { border-color: var(--corail-clair); transform: translateX(3px); }

.check-box {
  flex: none;
  width: 22px;
  height: 22px;
  border: 2px solid var(--bordure-forte);
  border-radius: 6px;
  margin-top: 2px;
  position: relative;
  transition: background var(--tr-rapide), border-color var(--tr-rapide);
}

.check-box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid #FFFFFF;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  transition: transform var(--tr-moyen);
}

.check-item[aria-pressed="true"] { border-color: var(--corail); background: var(--blanc-casse); }
.check-item[aria-pressed="true"] .check-box { background: var(--corail); border-color: var(--corail); }
.check-item[aria-pressed="true"] .check-box::after { transform: rotate(45deg) scale(1); }
.check-item[aria-pressed="true"] .check-text strong { color: var(--corail-sombre); }

.check-text strong { display: block; color: var(--noir); margin-bottom: 0.1rem; }

/* ==========================================================================
   Section 10 : FAQ
   ========================================================================== */

.faq {
  border-top: 1px solid var(--bordure);
  max-width: 900px;
}

.faq-item { border-bottom: 1px solid var(--bordure); }

.faq-item h3 { margin: 0; font-size: 1rem; }

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  background: transparent;
  border: 0;
  padding: 1.25rem 0.5rem 1.25rem 0;
  font: inherit;
  font-family: var(--font-titre);
  font-weight: 700;
  font-size: 1.04rem;
  letter-spacing: -0.015em;
  color: var(--noir);
  text-align: left;
  cursor: pointer;
  transition: color var(--tr-rapide), padding-left var(--tr-moyen);
}

.faq-q:hover { color: var(--corail-sombre); padding-left: 0.5rem; }

.faq-icon {
  flex: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid var(--bordure-forte);
  position: relative;
  transition: background var(--tr-moyen), border-color var(--tr-moyen), transform var(--tr-moyen);
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--noir);
  transition: transform var(--tr-moyen), background var(--tr-moyen);
}

.faq-icon::before { width: 11px; height: 2px; transform: translate(-50%, -50%); }
.faq-icon::after { width: 2px; height: 11px; transform: translate(-50%, -50%); }

.faq-q[aria-expanded="true"] .faq-icon { background: var(--corail); border-color: var(--corail); transform: rotate(180deg); }
.faq-q[aria-expanded="true"] .faq-icon::before { background: #FFFFFF; }
.faq-q[aria-expanded="true"] .faq-icon::after { transform: translate(-50%, -50%) scaleY(0); }

.faq-a {
  padding: 0 3rem 1.4rem 0;
  color: var(--gris);
  font-size: 0.98rem;
  animation: deplie var(--tr-moyen) ease both;
}

@keyframes deplie {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Section 11 : contact
   ========================================================================== */

.section-contact {
  background: var(--blanc-casse);
  border-top: 1px solid var(--bordure);
}

.contact-grid { display: grid; gap: var(--sp-5); align-items: start; }

.contact-mail {
  margin: var(--sp-4) 0;
}

.contact-mail a {
  display: inline-block;
  font-size: clamp(1.15rem, 1rem + 1.4vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--noir);
  text-decoration: none;
  border-bottom: 3px solid var(--corail);
  padding-bottom: 0.15rem;
  transition: color var(--tr-rapide), transform var(--tr-rapide);
  word-break: break-word;
}

.contact-mail a:hover { color: var(--corail); transform: translateY(-2px); }

.contact-facts {
  list-style: none;
  display: grid;
  gap: 0.55rem;
  border-top: 1px solid var(--bordure-forte);
  padding-top: var(--sp-4);
}

.contact-facts li { font-size: 0.93rem; color: var(--gris); }
.contact-facts strong {
  display: inline-block;
  min-width: 130px;
  color: var(--noir);
}

.share-card {
  background: var(--fond);
  border: 1px solid var(--bordure);
  border-radius: var(--r-md);
  padding: var(--sp-4);
  box-shadow: var(--sh-carte);
}

.share-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gris);
  margin-bottom: var(--sp-3);
}

.share-card figure { margin: 0; }

.share-card figure img {
  border-radius: var(--r-sm) var(--r-sm) 0 0;
  border: 1px solid var(--bordure);
  border-bottom: 0;
}

.share-card figcaption {
  border: 1px solid var(--bordure);
  border-top: 0;
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  padding: 0.8rem 0.95rem;
  display: grid;
  gap: 0.25rem;
}

.share-domain {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gris);
}

.share-headline { font-weight: 700; font-size: 0.95rem; line-height: 1.3; letter-spacing: -0.02em; }
.share-desc { font-size: 0.82rem; color: var(--gris); line-height: 1.45; }

.mini-portrait {
  margin: var(--sp-4) 0 0;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  border-top: 1px solid var(--bordure);
  padding-top: var(--sp-4);
}

.mini-portrait img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--fond);
  box-shadow: 0 0 0 2px var(--corail);
}

.mini-portrait figcaption { font-size: 0.85rem; color: var(--gris); }

/* ==========================================================================
   Pied de page
   ========================================================================== */

.site-footer {
  background: var(--noir);
  color: rgba(255, 247, 247, 0.72);
  padding-block: var(--sp-6);
  position: relative;
  z-index: 1;
}

.footer-inner { display: grid; gap: var(--sp-4); }

.footer-brand { display: flex; gap: 0.9rem; align-items: flex-start; }
.footer-brand .brand-mark { background: var(--corail); flex: none; }
.footer-brand .brand-mark::after { background: #FFFFFF; }
.footer-brand p { font-size: 0.9rem; max-width: 46ch; }
.footer-brand strong { color: #FFFFFF; font-size: 1.02rem; }

.footer-nav ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 0.4rem 1rem;
}

.footer-nav a {
  color: rgba(255, 247, 247, 0.72);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color var(--tr-rapide), padding-left var(--tr-rapide);
}

.footer-nav a:hover { color: var(--corail-clair); padding-left: 4px; }

.footer-legal {
  font-size: 0.82rem;
  color: rgba(255, 247, 247, 0.5);
  border-top: 1px solid rgba(255, 247, 247, 0.12);
  padding-top: var(--sp-3);
  margin: 0;
}

.footer-legal a { color: var(--corail-clair); }
.footer-legal a:hover { color: #FFFFFF; }

/* Retour en haut */

.to-top {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 0;
  background: var(--noir);
  color: #FFFFFF;
  font-size: 1.05rem;
  cursor: pointer;
  z-index: 80;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  box-shadow: var(--sh-carte);
  transition: opacity var(--tr-moyen), transform var(--tr-moyen), background var(--tr-rapide);
}

.to-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.to-top:hover { background: var(--corail); }

/* ==========================================================================
   Apparition au defilement
   ========================================================================== */

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--tr-lent), transform var(--tr-lent);
}

[data-reveal].is-in { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   Page 404
   ========================================================================== */

.erreur-page {
  min-height: 76vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding-block: var(--sp-7);
}

.erreur-code {
  font-size: clamp(5rem, 18vw, 12rem);
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 0.85;
  color: var(--noir);
  margin: 0 0 var(--sp-3);
}

.erreur-code span { color: var(--corail); }

.erreur-page p { color: var(--gris); max-width: 52ch; margin-inline: auto; }

.erreur-liens {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin-top: var(--sp-4);
}

.erreur-liens a {
  display: inline-block;
  border: 1px solid var(--bordure-forte);
  border-radius: 999px;
  padding: 0.45rem 1rem;
  font-size: 0.86rem;
  text-decoration: none;
  color: var(--gris);
  transition: border-color var(--tr-rapide), color var(--tr-rapide), transform var(--tr-rapide);
}

.erreur-liens a:hover { border-color: var(--corail); color: var(--noir); transform: translateY(-2px); }

/* ==========================================================================
   Points de rupture
   ========================================================================== */

@media (min-width: 640px) {
  .crit-grid { grid-template-columns: repeat(2, 1fr); }
  .crit-grid .wide { grid-column: 1 / -1; }
  .precautions { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .err-list { grid-template-columns: repeat(2, 1fr); }
  .gauges { grid-template-columns: repeat(3, 1fr); }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; }
  .arch-grid { grid-template-columns: 0.85fr 1.15fr; align-items: start; }
  .perf-split { grid-template-columns: 1.1fr 0.9fr; }
  .tech-layout { grid-template-columns: 1.35fr 0.65fr; align-items: start; }
  .checklist-wrap { grid-template-columns: 0.62fr 1.38fr; }
  .contact-grid { grid-template-columns: 1.15fr 0.85fr; }
  .footer-inner { grid-template-columns: 1.1fr 1fr; }
  .footer-legal { grid-column: 1 / -1; }
  .precautions { grid-template-columns: repeat(3, 1fr); }
  .crit-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1200px) {
  .crit-grid { grid-template-columns: repeat(4, 1fr); }
  .crit-grid .wide { grid-column: span 4; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .err-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 899px) {
  .nav-toggle { display: flex; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--fond);
    border-bottom: 1px solid var(--bordure);
    box-shadow: var(--sh-carte);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--tr-moyen);
  }

  .site-nav.is-open { max-height: 78vh; overflow-y: auto; }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.6rem clamp(1.1rem, 4vw, 2.6rem) 1.2rem;
  }

  .site-nav a {
    padding: 0.85rem 0.2rem;
    font-size: 1rem;
    border-bottom: 1px solid var(--bordure);
  }

  .site-nav a::after { display: none; }

  .site-nav .nav-cta {
    margin: 0.8rem 0 0;
    text-align: center;
    border-bottom: 0;
  }

  .portrait { justify-self: start; margin-top: -1.4rem; }
  .check-progress { position: static; }
}

@media (max-width: 520px) {
  .hero-stats { gap: var(--sp-3); }
  .hero-stats strong { font-size: 1.35rem; }
  .browser { transform: none; }
  .portrait { width: min(260px, 82%); }
  .faq-a { padding-right: 0.5rem; }
  .contact-facts strong { min-width: 0; display: block; }
}

/* ==========================================================================
   Preferences de mouvement reduit
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] { opacity: 1; transform: none; }
  .browser { transform: none; }
  .hero h1 em::after { transform: scaleX(1); }
  .mock-title, .mock-text, .mock-cta, .mock-card, .mock-metric i { animation: none; opacity: 1; transform: none; }
  .carousel-track { scroll-behavior: auto; }
}

/* ==========================================================================
   Impression
   ========================================================================== */

@media print {
  .site-header, .to-top, .deco, .carousel-controls, .nav-toggle { display: none !important; }
  body { color: #000000; background: #FFFFFF; }
  .section-dark { background: #FFFFFF; color: #000000; }
  .faq-a { display: block !important; }
  a { color: #000000; text-decoration: underline; }
}