:root {
  --noir: #000000;
  --noir-deep: #0D0D0D;
  --charbon: #141413;
  --anthracite: #30302E;
  --graphite: #333333;
  --blanc: #FFFFFF;
  --creme: #FAF9F5;
  --gris-moyen: #666666;
  --sep-blanc: rgba(255, 255, 255, 0.08);
  --sep-blanc-fort: rgba(255, 255, 255, 0.15);
  --sep-blanc-soft: rgba(255, 255, 255, 0.05);
  --sep-noir: rgba(0, 0, 0, 0.12);
  --sep-noir-fort: rgba(0, 0, 0, 0.2);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--noir);
  color: var(--blanc);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
::selection { background: var(--blanc); color: var(--noir); }
a { color: inherit; text-decoration: none; }

/* TYPOGRAPHIE UTILITAIRE */
.mono {
  font-family: 'Space Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 11px;
  font-weight: 400;
}

/* NAV */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 28px 56px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.4s ease;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(0, 0, 0, 0.7);
  border-bottom: 1px solid var(--sep-blanc);
}
.nav.scrolled { padding: 18px 56px; }
.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.20em;
  color: var(--blanc);
}
.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
}
.nav-links a {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--blanc);
  transition: opacity 0.3s ease;
  opacity: 0.55;
}
.nav-links a:hover,
.nav-links a.active { opacity: 1; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  border: 1px solid var(--sep-blanc-fort);
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--blanc);
  transition: all 0.4s var(--ease);
}
.nav-cta:hover { border-color: rgba(255, 255, 255, 0.4); }

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 18px 40px;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  border-radius: 0;
  cursor: pointer;
  transition: all 0.4s var(--ease);
  background: transparent;
  border: 1px solid var(--sep-blanc-fort);
  color: var(--blanc);
}
.btn:hover { border-color: rgba(255, 255, 255, 0.4); }
.btn .arrow {
  width: 18px; height: 1px;
  background: currentColor;
  position: relative;
  transition: width 0.3s ease;
}
.btn .arrow::after {
  content: '';
  position: absolute;
  right: 0; top: -3px;
  width: 8px; height: 8px;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  transform: rotate(45deg);
}
.btn:hover .arrow { width: 28px; }

.btn.dark {
  border-color: var(--sep-noir-fort);
  color: var(--noir);
}
.btn.dark:hover { border-color: var(--noir); }

/* SECTIONS */
.section {
  padding: 160px 56px;
  position: relative;
}
.section-inner {
  max-width: 1440px;
  margin: 0 auto;
}
.section-header {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  margin-bottom: 96px;
  align-items: start;
}
.section-num {
  color: var(--blanc);
  opacity: 0.5;
  padding-top: 14px;
  border-top: 1px solid var(--sep-blanc);
  display: block;
}
.section-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(44px, 6vw, 84px);
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--blanc);
  text-transform: uppercase;
}
.section-lede {
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  font-size: 17px;
  line-height: 1.7;
  color: var(--blanc);
  opacity: 0.7;
  max-width: 640px;
  margin-top: 32px;
}

/* CREAM VARIANT */
.cream {
  background: var(--creme);
  color: var(--noir);
}
.cream .section-num { color: var(--noir); opacity: 0.5; border-top-color: var(--sep-noir); }
.cream .section-title { color: var(--noir); }
.cream .section-lede { color: var(--noir); opacity: 0.7; }

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 56px 100px;
  position: relative;
  overflow: hidden;
  background: var(--noir);
}
.hero-grid {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 80px;
  align-items: end;
  position: relative;
  z-index: 2;
}
.hero-left .eyebrow {
  margin-bottom: 56px;
  color: var(--blanc);
  opacity: 0.55;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.hero-left .eyebrow::before {
  content: '';
  width: 24px; height: 1px;
  background: rgba(255, 255, 255, 0.4);
}
.hero-statement {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(56px, 8vw, 116px);
  line-height: 0.92;
  letter-spacing: -0.045em;
  color: var(--blanc);
  text-transform: uppercase;
}
.hero-right {
  display: flex;
  flex-direction: column;
  justify-content: end;
  gap: 32px;
  padding-bottom: 12px;
}
.hero-desc {
  font-size: 17px;
  line-height: 1.7;
  color: var(--blanc);
  opacity: 0.7;
  max-width: 460px;
  font-weight: 300;
}
.hero-bg-mark {
  position: absolute;
  right: -8%;
  bottom: -25%;
  font-family: 'Syne', sans-serif;
  font-size: clamp(360px, 50vw, 700px);
  font-weight: 800;
  line-height: 0.8;
  letter-spacing: -0.05em;
  pointer-events: none;
  user-select: none;
  color: var(--blanc);
  opacity: 0.025;
  z-index: 1;
}

/* HERO META (3 cols) */
.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--sep-blanc);
  margin-top: 24px;
}
.hero-meta-item .label {
  color: var(--blanc);
  opacity: 0.5;
  margin-bottom: 10px;
  display: block;
}
.hero-meta-item .value {
  font-family: 'Syne', sans-serif;
  font-size: 22px;
  font-weight: 600;
  color: var(--blanc);
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

/* PILLARS GRID */
.pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--sep-blanc);
  border-left: 1px solid var(--sep-blanc);
}
.pillar {
  padding: 56px 48px;
  border-right: 1px solid var(--sep-blanc);
  border-bottom: 1px solid var(--sep-blanc);
  transition: background 0.4s ease;
}
.pillar:hover { background: var(--charbon); }
.pillar-num {
  color: var(--blanc);
  opacity: 0.5;
  margin-bottom: 32px;
  display: block;
}
.pillar-title {
  font-family: 'Syne', sans-serif;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.05;
  color: var(--blanc);
  margin-bottom: 18px;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}
.pillar-desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--blanc);
  opacity: 0.65;
  font-weight: 300;
}

/* MANIFESTE TEXT */
.manifeste-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
}
.manifeste-text {
  font-family: 'Inter', sans-serif;
  font-size: clamp(22px, 2.2vw, 30px);
  font-weight: 300;
  line-height: 1.45;
  color: var(--blanc);
  max-width: 920px;
  letter-spacing: -0.005em;
}
.manifeste-text strong { color: var(--blanc); font-weight: 500; }
.manifeste-text p + p { margin-top: 28px; }
.cream .manifeste-text { color: var(--noir); }

/* NICHE / ITEMS LIST */
.niche-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
}
.niche-tag {
  color: var(--noir);
  opacity: 0.55;
  margin-bottom: 24px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.niche-tag::before {
  content: '';
  width: 24px; height: 1px;
  background: var(--noir);
  opacity: 0.5;
}
.cream .niche-tag::before { background: var(--noir); }
.niche-headline {
  font-family: 'Syne', sans-serif;
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--noir);
  margin-bottom: 28px;
  text-transform: uppercase;
}
.niche-desc {
  font-size: 17px;
  line-height: 1.7;
  color: var(--noir);
  opacity: 0.7;
  max-width: 720px;
  font-weight: 300;
}
.niche-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--sep-noir);
  margin-top: 64px;
}
.niche-item {
  padding: 32px 0;
  border-bottom: 1px solid var(--sep-noir);
  transition: all 0.3s ease;
}
.niche-item:nth-child(odd) {
  border-right: 1px solid var(--sep-noir);
  padding-right: 32px;
}
.niche-item:nth-child(even) { padding-left: 32px; }
.niche-item:hover { background: rgba(0, 0, 0, 0.03); }
.niche-item .num {
  color: var(--noir);
  opacity: 0.5;
  margin-bottom: 14px;
  display: block;
}
.niche-item h4 {
  font-family: 'Syne', sans-serif;
  font-size: 22px;
  font-weight: 600;
  color: var(--noir);
  margin-bottom: 10px;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}
.niche-item p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--noir);
  opacity: 0.7;
  font-weight: 300;
}

/* ANTI-LIST */
.anti-list-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
}
.anti-items {
  display: flex;
  flex-direction: column;
}
.anti-item {
  padding: 28px 0;
  border-bottom: 1px solid var(--sep-blanc);
  display: flex;
  align-items: center;
  gap: 32px;
  transition: padding-left 0.3s ease;
}
.anti-item:hover { padding-left: 16px; }
.anti-item:first-child { border-top: 1px solid var(--sep-blanc); }
.anti-symbol {
  font-family: 'Space Mono', monospace;
  color: var(--blanc);
  opacity: 0.5;
  font-size: 13px;
  font-weight: 400;
  flex-shrink: 0;
  width: 50px;
  letter-spacing: 0.1em;
}
.anti-text {
  font-family: 'Syne', sans-serif;
  font-size: 22px;
  font-weight: 600;
  color: var(--blanc);
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

/* PROCESS STEPS */
.process-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
}
.process-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--sep-blanc);
}
.process-step {
  display: grid;
  grid-template-columns: 80px 1fr 200px;
  padding: 48px 0;
  border-bottom: 1px solid var(--sep-blanc);
  align-items: start;
  gap: 40px;
}
.process-step .step-num {
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  color: var(--blanc);
  opacity: 0.5;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.process-step h3 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  line-height: 1.05;
  margin-bottom: 16px;
  color: var(--blanc);
}
.process-step p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--blanc);
  opacity: 0.7;
  font-weight: 300;
  max-width: 640px;
}
.process-step .duration {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  color: var(--blanc);
  opacity: 0.5;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-align: right;
}

/* PAGE HEADER (intérieur) */
.page-header {
  padding: 200px 56px 120px;
  border-bottom: 1px solid var(--sep-blanc);
  position: relative;
  overflow: hidden;
}
.page-header-inner {
  max-width: 1440px;
  margin: 0 auto;
}
.page-header .eyebrow {
  margin-bottom: 32px;
  color: var(--blanc);
  opacity: 0.55;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.page-header .eyebrow::before {
  content: '';
  width: 24px; height: 1px;
  background: rgba(255, 255, 255, 0.4);
}
.page-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(56px, 9vw, 140px);
  line-height: 0.92;
  letter-spacing: -0.045em;
  color: var(--blanc);
  text-transform: uppercase;
  max-width: 1200px;
}
.page-subtitle {
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.6;
  color: var(--blanc);
  opacity: 0.7;
  max-width: 720px;
  margin-top: 40px;
}

/* CTA SECTION */
.cta-block {
  padding: 160px 56px;
  border-top: 1px solid var(--sep-blanc);
  border-bottom: 1px solid var(--sep-blanc);
  text-align: center;
  background: var(--noir);
}
.cta-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.cta-eyebrow {
  margin-bottom: 32px;
  color: var(--blanc);
  opacity: 0.55;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.cta-eyebrow::before, .cta-eyebrow::after {
  content: '';
  width: 24px; height: 1px;
  background: rgba(255, 255, 255, 0.4);
}
.cta-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: clamp(48px, 7vw, 100px);
  line-height: 0.95;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  margin-bottom: 32px;
}
.cta-desc {
  font-size: 17px;
  line-height: 1.7;
  color: var(--blanc);
  opacity: 0.7;
  max-width: 600px;
  margin: 0 auto 48px;
  font-weight: 300;
}

/* CONTACT FORM */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
.contact-info p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--blanc);
  opacity: 0.7;
  margin-bottom: 40px;
  max-width: 480px;
  font-weight: 300;
}
.contact-block {
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--sep-blanc);
}
.contact-block:last-child { border-bottom: none; }
.contact-block .label {
  display: block;
  margin-bottom: 12px;
  color: var(--blanc);
  opacity: 0.5;
}
.contact-block .value {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 22px;
  color: var(--blanc);
  letter-spacing: -0.02em;
  text-transform: uppercase;
}
form { display: flex; flex-direction: column; gap: 28px; }
.field { display: flex; flex-direction: column; gap: 10px; }
.field label {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blanc);
  opacity: 0.5;
}
input, select, textarea {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--sep-blanc-fort);
  color: var(--blanc);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  padding: 12px 0;
  transition: border-color 0.3s var(--ease);
  font-weight: 300;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--blanc);
}
textarea { resize: vertical; min-height: 100px; }
select option { background: var(--noir); color: var(--blanc); }

/* FOOTER */
footer {
  border-top: 1px solid var(--sep-blanc);
  padding: 80px 56px 32px;
  background: var(--noir-deep);
}
.footer-inner {
  max-width: 1440px;
  margin: 0 auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 64px;
  padding-bottom: 64px;
  border-bottom: 1px solid var(--sep-blanc);
}
.footer-brand .logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 28px;
  letter-spacing: 0.20em;
  display: block;
  margin-bottom: 24px;
  color: var(--blanc);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--blanc);
  opacity: 0.6;
  max-width: 360px;
  font-weight: 300;
}
.footer-col h4 {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blanc);
  opacity: 0.5;
  font-weight: 400;
  margin-bottom: 24px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 14px; }
.footer-col a {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  color: var(--blanc);
  opacity: 0.7;
  transition: opacity 0.3s ease;
  font-weight: 300;
}
.footer-col a:hover { opacity: 1; }
.footer-bottom {
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  color: var(--blanc);
  opacity: 0.5;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* REVEAL */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* PREVENT TITLE OVERFLOW */
.hero-statement, .page-title, .section-title, .cta-title, .niche-headline,
.pillar-title, .anti-text, .manifeste-text {
  overflow-wrap: break-word;
  word-wrap: break-word;
  hyphens: none;
}

/* RESPONSIVE — Tablet */
@media (max-width: 1024px) {
  .nav { padding: 24px 32px; }
  .section, .hero, .page-header, .cta-block, footer { padding-left: 32px; padding-right: 32px; }
  .nav-links { display: none; }
  .hero { padding: 120px 32px 80px; min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  .hero-meta { grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .page-header { padding: 140px 32px 80px; }
  .section-header, .manifeste-grid, .niche-grid, .anti-list-grid, .process-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 64px;
  }
  .pillars { grid-template-columns: 1fr; }
  .niche-list { grid-template-columns: 1fr; }
  .niche-item:nth-child(odd) { border-right: none; padding-right: 0; }
  .niche-item:nth-child(even) { padding-left: 0; }
  .process-step { grid-template-columns: 1fr; gap: 12px; }
  .process-step .duration { text-align: left; }
  .contact-grid { grid-template-columns: 1fr; gap: 64px; }
  .footer-grid { grid-template-columns: 1fr; gap: 48px; }
  .section { padding-top: 100px; padding-bottom: 100px; }
  .cta-block { padding-top: 100px; padding-bottom: 100px; }

  .hero-statement { font-size: clamp(48px, 10vw, 88px); line-height: 0.95; letter-spacing: -0.04em; }
  .page-title { font-size: clamp(48px, 10vw, 96px); line-height: 0.95; letter-spacing: -0.04em; }
  .section-title { font-size: clamp(36px, 7vw, 64px); line-height: 0.98; }
  .cta-title { font-size: clamp(40px, 8vw, 80px); line-height: 1; }
  .niche-headline { font-size: clamp(28px, 5vw, 44px); }
  .pillar-title { font-size: 26px; }
  .anti-text { font-size: 18px; }
  .pillar { padding: 40px 32px; }
  .manifeste-text { font-size: clamp(20px, 2.6vw, 26px); }
}

/* RESPONSIVE — Mobile */
@media (max-width: 600px) {
  .nav { padding: 16px 20px; }
  .section, .hero, .page-header, .cta-block, footer { padding-left: 20px; padding-right: 20px; }
  .hero { padding: 96px 20px 64px; }
  .page-header { padding: 112px 20px 64px; }
  .section { padding-top: 72px; padding-bottom: 72px; }
  .cta-block { padding-top: 80px; padding-bottom: 80px; }

  .nav-logo { font-size: 16px; letter-spacing: 0.18em; }
  .nav-cta { padding: 10px 16px; font-size: 9px; letter-spacing: 0.2em; }

  .hero-statement { font-size: clamp(40px, 11vw, 56px); letter-spacing: -0.035em; }
  .page-title { font-size: clamp(40px, 12vw, 64px); letter-spacing: -0.035em; }
  .section-title { font-size: clamp(32px, 8.5vw, 48px); letter-spacing: -0.03em; }
  .cta-title { font-size: clamp(32px, 9vw, 56px); letter-spacing: -0.03em; }
  .niche-headline { font-size: clamp(24px, 6vw, 36px); letter-spacing: -0.025em; }
  .pillar-title { font-size: 22px; }
  .pillar { padding: 32px 24px; }
  .anti-text { font-size: 16px; }
  .anti-symbol { width: 36px; }

  .hero-desc { font-size: 15px; }
  .hero-meta { grid-template-columns: 1fr 1fr; gap: 20px; }
  .hero-meta-item .value { font-size: 18px; }
  .page-subtitle { font-size: 16px; }
  .manifeste-text { font-size: 18px; line-height: 1.5; }

  .btn { padding: 16px 28px; font-size: 10px; letter-spacing: 0.22em; gap: 10px; }
  .btn .arrow { width: 14px; }
  .btn:hover .arrow { width: 22px; }

  .niche-item { padding: 24px 0; }
  .niche-item h4 { font-size: 18px; }

  .process-step { padding: 32px 0; }
  .process-step h3 { font-size: 24px; }

  .contact-block .value { font-size: 18px; }
  .footer-brand .logo { font-size: 24px; letter-spacing: 0.18em; }

  .hero-bg-mark { display: none; }
  .page-header .hero-bg-mark { display: none; }
}

/* RESPONSIVE — Very narrow */
@media (max-width: 380px) {
  .hero-meta { grid-template-columns: 1fr; }
  .nav-cta { padding: 9px 14px; font-size: 9px; }
  .nav-logo { font-size: 15px; }
}