:root {
  --ink: #12151c;
  --ink-soft: #2a303c;
  --mist: #d6dae2;
  --mist-deep: #b4bbc8;
  --paper: #e9ecf1;
  --signal: #e63312;
  --signal-hot: #ff4a28;
  --teal: #1a7a72;
  --line: rgba(18, 21, 28, 0.12);
  --line-strong: rgba(18, 21, 28, 0.22);
  --font-display: "Syne", system-ui, sans-serif;
  --font-sans: "Manrope", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  overflow-x: hidden;
}

::selection {
  background: var(--signal);
  color: #fff;
}

a {
  color: inherit;
  text-decoration: none;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 80;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.wrap {
  width: min(1100px, calc(100% - 2.5rem));
  margin-inline: auto;
}

.wrap.narrow {
  width: min(720px, calc(100% - 2.5rem));
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--signal);
}

.eyebrow.light {
  color: var(--signal-hot);
}

/* Topbar */
.topbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.5rem;
  background: rgba(233, 236, 241, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.topbar.is-scrolled {
  border-bottom-color: var(--line);
}

.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.brand span {
  color: var(--signal);
}

.nav {
  display: none;
  gap: 1.25rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.nav a:hover {
  color: var(--ink);
}

.btn-print {
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  padding: 0.55rem 0.9rem;
  font: inherit;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
}

.btn-print:hover {
  background: var(--signal);
  border-color: var(--signal);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 7rem 1.5rem 3rem;
  overflow: hidden;
}

.mesh {
  background:
    radial-gradient(ellipse 70% 50% at 12% 18%, rgba(230, 51, 18, 0.14), transparent 55%),
    radial-gradient(ellipse 60% 45% at 88% 12%, rgba(26, 122, 114, 0.16), transparent 50%),
    linear-gradient(165deg, #eef0f4 0%, #d5d9e2 50%, #c8ced8 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 55% 40%, #000 15%, transparent 75%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(1100px, 100%);
  margin-inline: auto;
  padding-bottom: 2rem;
}

.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(4.5rem, 16vw, 9.5rem);
  line-height: 0.85;
  letter-spacing: -0.04em;
}

.hero h1 span {
  color: var(--signal);
}

.hero-lead {
  margin: 1.5rem 0 0;
  max-width: 34rem;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--ink-soft);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.5rem;
  margin: 2.5rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-strong);
  max-width: 40rem;
}

.hero-meta dt {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.hero-meta dd {
  margin: 0.25rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
}

.scroll-hint {
  position: relative;
  z-index: 1;
  width: min(1100px, 100%);
  margin: 2rem auto 0;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.scroll-hint::after {
  content: "";
  display: inline-block;
  width: 1px;
  height: 2rem;
  margin-left: 0.75rem;
  vertical-align: middle;
  background: var(--signal);
}

/* Sections */
.section {
  padding: 5.5rem 0;
}

.section-mist {
  background: var(--mist);
}

.section-ink {
  background: var(--ink);
  color: #f3f5f8;
}

.section-ink .section-lead {
  color: rgba(243, 245, 248, 0.65);
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2.75rem;
}

.section-head h2,
.section h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.section-lead {
  margin: 1rem 0 0;
  font-size: 1.08rem;
  color: var(--ink-soft);
}

.cards-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  padding: 1.4rem 1.35rem;
}

.on-dark .card {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.12);
}

.card-n {
  display: inline-block;
  margin-bottom: 0.75rem;
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--signal);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.card p {
  margin: 0;
  color: var(--ink-soft);
}

.on-dark .card p {
  color: rgba(243, 245, 248, 0.7);
}

.quote {
  margin: 2.5rem 0 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--line-strong);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.7rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.split {
  display: grid;
  gap: 2rem;
}

.split h3 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.checklist {
  margin: 0;
  padding: 0;
  list-style: none;
}

.checklist li {
  position: relative;
  padding: 0.65rem 0 0.65rem 1.4rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.05rem;
  width: 0.45rem;
  height: 0.45rem;
  background: var(--signal);
  transform: rotate(45deg);
}

.pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2.5rem;
}

.pillars div {
  border-top: 2px solid var(--ink);
  padding-top: 0.9rem;
}

.pillars strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.35rem;
}

.pillars span {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* Services */
.service-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line-strong);
}

.service {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s ease, padding-left 0.25s ease;
}

.service:hover {
  background: rgba(255, 255, 255, 0.55);
  padding-left: 0.75rem;
}

.service-index {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--mist-deep);
}

.service:hover .service-index {
  color: var(--signal);
}

.service h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
}

.service p {
  margin: 0;
  max-width: 40rem;
  color: var(--ink-soft);
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 2.75rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.stats strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.stats span {
  color: rgba(243, 245, 248, 0.55);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2.75rem;
}

.timeline > div {
  border-left: 2px solid var(--signal);
  padding-left: 1rem;
}

.timeline span {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--mist-deep);
  font-size: 1.5rem;
}

.timeline h3 {
  margin: 0.35rem 0;
  font-family: var(--font-display);
}

.timeline p {
  margin: 0;
  color: var(--ink-soft);
}

.split-portrait {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.portrait {
  aspect-ratio: 1;
  max-width: 320px;
  background: var(--ink);
  color: #fff;
  display: grid;
  place-content: center;
  text-align: center;
  border: 1px solid var(--line-strong);
}

.portrait-mark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 5rem;
  letter-spacing: -0.05em;
  color: var(--signal);
  line-height: 1;
}

.portrait p {
  margin: 0.75rem 0 0;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.55);
}

.section-final {
  background:
    radial-gradient(ellipse 50% 40% at 80% 0%, rgba(230, 51, 18, 0.1), transparent 60%),
    var(--paper);
}

.demande-box {
  margin-top: 2rem;
  padding: 1.75rem;
  background: #fff;
  border: 1px solid var(--line-strong);
}

.demande-box > p {
  margin: 0 0 2rem;
  color: var(--ink-soft);
}

.sign {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: flex-end;
}

.sign span {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.sign strong {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
}

.sign em {
  display: block;
  font-style: normal;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.sign-line {
  width: min(220px, 100%);
  height: 1px;
  background: var(--ink);
  margin-bottom: 0.5rem;
}

.closing {
  margin-top: 2rem;
  color: var(--ink-soft);
}

.closing a {
  color: var(--ink);
  border-bottom: 1px solid var(--signal);
}

.footer {
  border-top: 1px solid var(--line);
  padding: 1.25rem 0;
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

/* Reveals */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.18s; }
.delay-3 { transition-delay: 0.26s; }

@media (min-width: 720px) {
  .nav { display: flex; }
  .hero-meta { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .cards-3 { grid-template-columns: repeat(3, 1fr); }
  .split { grid-template-columns: 1fr 1fr; gap: 3rem; }
  .pillars { grid-template-columns: repeat(4, 1fr); }
  .timeline { grid-template-columns: repeat(4, 1fr); gap: 1rem; }
  .timeline > div { border-left: 0; border-top: 2px solid var(--signal); padding-left: 0; padding-top: 1rem; }
  .stats { grid-template-columns: repeat(4, 1fr); }
  .split-portrait { grid-template-columns: 0.85fr 1.15fr; gap: 3rem; }
  .footer-inner { flex-direction: row; justify-content: space-between; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html { scroll-behavior: auto; }
}

@media print {
  .grain, .topbar, .scroll-hint, .btn-print { display: none !important; }
  .hero { min-height: auto; padding-top: 2rem; }
  .section { padding: 2rem 0; break-inside: avoid; }
  .reveal { opacity: 1; transform: none; }
  body { background: #fff; }
}