:root {
  --ink: #0a0a0c;
  --muted: #67676d;
  --line: rgba(10,10,12,.1);
  --red: #d6122a;
  --paper: #fff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px clamp(20px,4vw,64px);
  backdrop-filter: blur(18px);
  background: rgba(255,255,255,.68);
  border-bottom: 1px solid rgba(0,0,0,.04);
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; letter-spacing: -.03em; }
.brand img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; }
.site-header nav { display: flex; align-items: center; gap: 28px; font-size: 14px; }
.nav-cta { border: 1px solid var(--ink); border-radius: 999px; padding: 10px 17px; }
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #fff;
}
.hero video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.42) contrast(1.08) brightness(1.03);
}
.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,.90) 0%, rgba(255,255,255,.48) 34%, rgba(255,255,255,0) 68%);
}
.hero-copy {
  position: relative;
  z-index: 2;
  width: min(1180px, calc(100% - 40px));
  margin: auto;
  padding-top: 70px;
}
.eyebrow {
  margin: 0 0 22px;
  color: var(--red);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: 12px;
  font-weight: 700;
}
h1, h2, h3 { font-family: Manrope, Inter, sans-serif; letter-spacing: -.055em; }
h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(58px, 8vw, 128px);
  line-height: .91;
  font-weight: 700;
}
.hero-intro { max-width: 520px; margin: 28px 0 34px; font-size: clamp(17px, 2vw, 22px); line-height: 1.55; color: #33343a; }
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  transition: transform .25s ease, background .25s ease;
}
.primary-button:hover { transform: translateY(-2px); background: var(--red); }
.scroll-hint {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  color: #5c5c61;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.scroll-hint span { width: 1px; height: 32px; background: #777; animation: pulse 1.8s infinite; }
@keyframes pulse { 0%,100%{transform:scaleY(.35);opacity:.35} 50%{transform:scaleY(1);opacity:1} }

.chapter { height: 180vh; }
.chapter-sticky {
  position: sticky;
  top: 0;
  height: 100svh;
  overflow: hidden;
  background: #fff;
}
.chapter video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1;
  transform: scale(1.015);
  filter: saturate(1.58) contrast(1.12) brightness(1.04);
}

.chapter-sticky::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 68% 50%, rgba(214,18,42,.10), transparent 34%);
  mix-blend-mode: multiply;
}

.chapter-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,.82) 0%, rgba(255,255,255,.26) 36%, rgba(255,255,255,0) 62%);
}
.chapter-copy {
  position: absolute;
  z-index: 2;
  left: clamp(24px, 8vw, 140px);
  top: 50%;
  transform: translateY(-40%);
  max-width: 520px;
  opacity: 0;
  transition: opacity .7s ease, transform .7s ease;
}
.chapter.is-active .chapter-copy { opacity: 1; transform: translateY(-50%); }
.chapter-copy span { font-size: 12px; font-weight: 700; letter-spacing: .18em; color: var(--red); }
.chapter-copy h2 { margin: 18px 0 10px; font-size: clamp(64px, 9vw, 140px); line-height: .9; }
.chapter-copy p { max-width: 440px; font-size: clamp(17px, 2vw, 22px); line-height: 1.5; color: #47474c; }

.manifesto, .services, .about, .contact {
  width: min(1180px, calc(100% - 40px));
  margin: auto;
}
.manifesto { padding: 150px 0; }
.manifesto h2, .section-heading h2, .contact h2 {
  margin: 0;
  font-size: clamp(46px, 7vw, 96px);
  line-height: .98;
}
.manifesto > p:last-of-type { max-width: 760px; margin: 36px 0 70px; font-size: clamp(20px,2.5vw,30px); line-height: 1.5; color: #49494e; }
.stats { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--line); }
.stats div { padding: 34px 24px 10px 0; }
.stats strong { display: block; font-size: clamp(40px,6vw,78px); letter-spacing: -.06em; }
.stats span { color: var(--muted); }
.services { padding: 110px 0 150px; }
.service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; margin-top: 70px; }
.service-grid article { min-height: 340px; padding: 34px; border-radius: 28px; background: #f5f5f7; transition: transform .3s ease; }
.service-grid article:hover { transform: translateY(-6px); }
.service-grid span { font-size: 12px; font-weight: 700; letter-spacing: .15em; }
.service-grid h3 { margin: 100px 0 15px; font-size: 38px; }
.service-grid p { color: var(--muted); line-height: 1.65; }
.about { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 80px; padding: 100px 0 160px; }
.about-logo img { width: 100%; border-radius: 50%; box-shadow: 0 30px 80px rgba(0,0,0,.08); }
.about-copy h2 { margin: 0 0 24px; font-size: clamp(68px,9vw,130px); }
.about-copy > p:not(.eyebrow) { max-width: 620px; font-size: 22px; line-height: 1.6; color: #48484d; }
.about-copy a { display: inline-flex; gap: 10px; margin-top: 25px; font-weight: 700; border-bottom: 1px solid; padding-bottom: 5px; }
.contact { margin-bottom: 80px; padding: 120px clamp(28px,7vw,90px); text-align: center; border-radius: 42px; background: #f5f5f7; }
.contact p:not(.eyebrow) { margin: 28px auto 34px; max-width: 560px; font-size: 20px; color: var(--muted); }
footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 30px;
  padding: 36px clamp(20px,4vw,64px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.footer-brand { color: var(--ink); font-weight: 700; }

@media (max-width: 820px) {
  .site-header nav a:not(.nav-cta) { display: none; }
  .hero-shade { background: linear-gradient(180deg, rgba(255,255,255,.82) 0%, rgba(255,255,255,.28) 58%, rgba(255,255,255,.08)); }
  .hero-copy { align-self: end; padding-bottom: 110px; }
  .chapter { height: 145vh; }
  .chapter-overlay { background: linear-gradient(180deg, rgba(255,255,255,.02) 18%, rgba(255,255,255,.76) 82%); }
  .chapter-copy { left: 24px; right: 24px; top: auto; bottom: 55px; transform: translateY(25px); }
  .chapter.is-active .chapter-copy { transform: translateY(0); }
  .chapter-copy h2 { font-size: clamp(58px,19vw,92px); }
  .stats, .service-grid, .about { grid-template-columns: 1fr; }
  .stats div { border-bottom: 1px solid var(--line); }
  .service-grid article { min-height: 280px; }
  .service-grid h3 { margin-top: 70px; }
  .about { gap: 40px; }
  .about-logo img { max-width: 420px; margin: auto; }
  footer { grid-template-columns: 1fr; gap: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}
/* Palette éditoriale : ivoire, rouge pomme et citron. */
:root { --paper:#faf8f2; --ink:#242620; --muted:#55594f; --red:#be2939; }
section[id] { scroll-margin-top:100px; }
a:focus-visible,button:focus-visible { outline:3px solid var(--red); outline-offset:6px; }
.skip-link { position:fixed; top:8px; left:8px; z-index:100; padding:14px; background:white; transform:translateY(-150%); }
.skip-link:focus { transform:none; }
.site-header { background:rgba(250,248,242,.94); }
.nav-cta { background:var(--ink); color:white; }
.hero { min-height:780px; height:calc(100svh - 30px); max-height:1000px; background:var(--paper); margin:auto; }
.hero video { inset:130px 3% 90px auto; width:47%; height:calc(100% - 220px); border-radius:220px 220px 36px 36px; filter:none; background:#eee; }
.hero-shade { display:none; }
.hero-copy { width:min(1300px,calc(100% - 80px)); padding:80px 50% 0 0; }
h1 { font-size:clamp(60px,6.3vw,98px); line-height:1.02; }
h1 em { font-style:normal; color:var(--red); }
.hero-intro { font-size:19px; }
.eyebrow { letter-spacing:.13em; }
.primary-button { background:var(--red); padding:16px 25px; }
.primary-button:hover { background:#96212e; }
.hero-actions { display:flex; gap:22px; align-items:center; flex-wrap:wrap; }
.text-link { font-size:14px; font-weight:600; text-decoration:underline; text-underline-offset:5px; }
.hero-note { margin-top:36px; font-size:13px; line-height:1.6; color:var(--muted); }
.scroll-hint { left:auto; right:7%; transform:none; }
.pathway { display:grid; grid-template-columns:repeat(3,1fr); gap:1px; margin:0 3%; border-radius:20px; overflow:hidden; background:#d7dcc6; }
.pathway a { padding:26px; background:#e9efcf; font-weight:600; }
.pathway span { margin-right:16px; font-size:12px; color:#565e3e; }
.experience-heading { padding:100px 7% 50px; }
.experience-heading>p:not(.eyebrow) { font-size:clamp(36px,5vw,68px); letter-spacing:-.05em; line-height:1.08; margin:0 0 24px; }
.experience-heading>span { font-size:14px; color:var(--muted); }
.chapter { height:125vh; }
.chapter-copy { opacity:1; transform:translateY(-50%); background:rgba(250,248,242,.84); border:1px solid rgba(255,255,255,.55); border-radius:24px; padding:28px; max-width:560px; width:44%; }
.chapter-copy h2 { font-size:clamp(48px,5.8vw,84px); overflow-wrap:anywhere; }
.chapter-copy>span { background:#e9efcf; padding:12px 16px; border-radius:30px; color:var(--ink); }
.chapter video { filter:saturate(1.12) contrast(1.03); transform:none; }
.chapter-sticky::after { display:none; }
.chapter-overlay { background:none; }
.manifesto { padding:110px 0 60px; }
.manifesto h2,.section-heading h2,.contact h2 { font-size:clamp(42px,5.6vw,76px); line-height:1.08; }
.manifesto h2 { max-width:1000px; }
.manifesto>p:last-of-type { font-size:23px; margin:30px 0 48px; }
.stats { border:0; gap:18px; }
.stats div { padding:26px; background:#e9efcf; border-radius:24px; }
.stats strong { font-size:56px; margin-bottom:12px; }
.services { padding:70px 0 90px; }
.service-grid { margin-top:42px; }
.service-grid article { background:#f4ded8; min-height:330px; }
.service-grid article:nth-child(2) { background:#e9efcf; }
.service-grid article:nth-child(3) { background:#e6e2f2; }
.service-grid h3 { margin-top:62px; font-size:32px; }
.service-grid p { color:#40463b; }
.about { padding:70px 0 110px; }
.about-logo { background:#e9efcf; border-radius:150px 150px 28px 28px; padding:36px; }
.about-logo img { box-shadow:none; }
.about-copy h2 { font-size:90px; color:var(--red); }
.contact { background:var(--red); color:white; padding:85px 45px; }
.contact .eyebrow,.contact p:not(.eyebrow) { color:white; }
.contact .primary-button { background:var(--paper); color:var(--ink); }
.demo-notice { grid-column:1/-1; margin:0; font-size:12px; }
.motion-toggle { position:fixed; bottom:16px; right:16px; z-index:60; background:var(--ink); color:white; border:1px solid white; border-radius:25px; padding:12px 16px; font:500 12px Inter,sans-serif; cursor:pointer; }
@media(max-width:1000px) { .hero-actions { gap:16px; } .hero-copy { padding-right:48%; } .hero video { width:44%; } .pathway a { padding:22px 16px; font-size:14px; } }
@media(max-width:820px) {
.site-header { padding:14px 20px; } .brand span { font-size:14px; }
.hero { height:auto; max-height:none; min-height:0; padding:110px 22px 38px; display:flex; flex-direction:column; gap:28px; }
.hero-copy { width:100%; padding:0; align-self:auto; }
h1 { font-size:clamp(48px,10.6vw,76px); }
.hero-intro { font-size:17px; margin:22px 0; }
.hero video { position:relative; inset:auto; width:100%; height:320px; order:2; border-radius:140px 140px 24px 24px; }
.hero-note { margin-top:24px; } .scroll-hint { display:none; }
.pathway { grid-template-columns:1fr; margin:0 22px; } .pathway a { padding:20px 24px; }
.experience-heading { padding:65px 24px 38px; }
.chapter { height:110vh; } .chapter-copy,.chapter.is-active .chapter-copy { transform:none; bottom:72px; width:auto; padding:20px; }
.chapter-copy h2 { font-size:clamp(44px,11vw,78px); overflow-wrap:anywhere; }
.chapter-copy p { font-size:18px; }
.chapter-overlay { background:none; }
.chapter video { object-fit:contain; }
.manifesto,.services,.about { width:calc(100% - 44px); }
.manifesto { padding:70px 0 30px; } .manifesto>p:last-of-type { font-size:19px; }
.stats { grid-template-columns:1fr; } .stats div { display:flex; align-items:center; gap:24px; border:0; }
.stats strong { min-width:90px; font-size:42px; margin:0; }
.service-grid { margin-top:30px; } .service-grid article { min-height:260px; padding:28px; }
.service-grid h3 { margin-top:40px; }
.about { padding:40px 0 70px; gap:30px; } .about-logo { max-width:360px; margin:auto; }
.about-copy h2 { font-size:70px; } .about-copy>p:not(.eyebrow) { font-size:19px; }
.contact { width:calc(100% - 28px); padding:60px 24px; border-radius:28px; margin-bottom:45px; }
.contact h2 { font-size:40px; } footer { padding-bottom:80px; }
}
@media(prefers-reduced-motion:reduce) { .chapter { height:auto; } .chapter-sticky { position:relative; height:85svh; } .primary-button:hover,.service-grid article:hover { transform:none; } }