:root {
  --encre: #1B3B50;
  --encre-fonce: #0F2737;
  --acier: #EEF2F4;
  --blanc: #FFFFFF;
  --ligne: #B9C9D2;
  --chantier: #E8650D;
  --texte-doux: #33536A;
  --texte-muted: #5C7A8E;
  --mono: "IBM Plex Mono", monospace;
  --body: "Inter", system-ui, sans-serif;
  --display: "Archivo", sans-serif;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--body);
  color: var(--encre);
  background: var(--acier);
  line-height: 1.6;
  font-size: 16px;
}

::selection {
  background: var(--chantier);
  color: var(--blanc);
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--chantier);
  outline-offset: 3px;
}

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

.feuille {
  max-width: 1280px;
  margin: 0 auto;
  border-left: 1px solid var(--ligne);
  border-right: 1px solid var(--ligne);
  background: var(--acier);
  position: relative;
}

/* —— Nav —— */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(238, 242, 244, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--ligne);
}

.nav {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.nav-logo img {
  height: 28px;
  width: auto;
}

.nav-logo span {
  font-family: var(--display);
  font-weight: 700;
  font-stretch: 110%;
  font-size: 17px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.2s;
}

.nav-links a:hover {
  border-color: var(--chantier);
}

.nav-cta {
  background: var(--encre);
  color: var(--blanc) !important;
  padding: 9px 18px;
  border-bottom: none !important;
  transition: background 0.2s;
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--chantier);
}

@media (max-width: 720px) {
  .nav {
    padding: 10px 16px;
  }

  .nav-links {
    gap: 0;
  }

  .nav-links li:not(:last-child) {
    display: none;
  }

  .nav-logo span {
    font-size: 14px;
  }

  .nav-cta {
    padding: 8px 13px;
    font-size: 12px;
  }
}

/* —— Hero —— */
.hero {
  position: relative;
  padding: 88px 32px 96px;
  background-image:
    linear-gradient(var(--ligne) 1px, transparent 1px),
    linear-gradient(90deg, var(--ligne) 1px, transparent 1px);
  background-size: 56px 56px;
  background-position: center top;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(238, 242, 244, 0.28) 0%,
    rgba(238, 242, 244, 0.88) 72%,
    var(--acier) 100%
  );
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 56px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--chantier);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.hero-eyebrow::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--chantier);
}

.hero-brand {
  font-family: var(--display);
  font-weight: 800;
  font-stretch: 118%;
  font-size: clamp(52px, 11vw, 92px);
  line-height: 0.92;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

h1 {
  font-family: var(--display);
  font-weight: 800;
  font-stretch: 115%;
  font-size: clamp(28px, 4.2vw, 42px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin-bottom: 22px;
}

h1 em {
  font-style: normal;
  color: var(--chantier);
}

.hero-sub {
  font-size: 18px;
  max-width: 48ch;
  color: var(--texte-doux);
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 15px 28px;
  border: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.btn-plein {
  background: var(--encre);
  color: var(--blanc);
}

.btn-plein:hover {
  background: var(--chantier);
}

.btn-ligne {
  border: 1px solid var(--encre);
  background: transparent;
  color: var(--encre);
}

.btn-ligne:hover {
  border-color: var(--chantier);
  color: var(--chantier);
}

.btn-orange {
  background: var(--chantier);
  color: var(--blanc);
}

.btn-orange:hover {
  background: #d2590a;
}

/* Cartouche — signature visuelle type plan */
.cartouche {
  background: var(--blanc);
  border: 1px solid var(--encre);
  box-shadow: 8px 8px 0 0 var(--encre);
}

.cartouche-logo {
  padding: 36px 32px 28px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.cartouche-logo img {
  width: 100%;
  max-width: 280px;
  height: auto;
}

.cartouche-metro {
  border-top: 1px solid var(--encre);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}

.cartouche-metro span {
  padding: 10px 6px;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
  color: var(--encre);
  border-right: 1px solid var(--ligne);
  position: relative;
}

.cartouche-metro span:last-child {
  border-right: none;
}

.cartouche-metro span::before {
  content: "";
  display: block;
  width: 100%;
  height: 3px;
  background: var(--ligne);
  margin: 0 0 8px;
}

.cartouche-metro span:nth-child(-n + 3)::before {
  background: var(--encre);
}

.cartouche-metro span:nth-child(3)::before {
  background: linear-gradient(90deg, var(--encre) 50%, var(--ligne) 50%);
}

.cartouche-table {
  border-top: 1px solid var(--encre);
  display: grid;
  grid-template-columns: 1fr 1fr;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
}

.cartouche-table div {
  padding: 9px 14px;
  text-transform: uppercase;
}

.cartouche-table div:nth-child(odd) {
  border-right: 1px solid var(--encre);
}

.cartouche-table div:nth-child(-n + 2) {
  border-bottom: 1px solid var(--encre);
}

.cartouche-table b {
  display: block;
  font-weight: 500;
  color: var(--chantier);
  font-size: 10px;
}

@media (max-width: 880px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .cartouche {
    max-width: 420px;
  }

  .cartouche-metro {
    grid-template-columns: 1fr 1fr;
  }

  .cartouche-metro span:nth-child(odd) {
    border-right: 1px solid var(--ligne);
  }

  .cartouche-metro span:nth-child(-n + 4) {
    border-bottom: 1px solid var(--ligne);
  }

  .cartouche-metro span:nth-child(5) {
    grid-column: 1 / -1;
    border-right: none;
  }
}

/* —— Sections —— */
section {
  padding: 88px 32px;
  border-top: 1px solid var(--ligne);
  scroll-margin-top: 64px;
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-tag {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--chantier);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-tag::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--chantier);
}

h2 {
  font-family: var(--display);
  font-weight: 800;
  font-stretch: 115%;
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.section-intro {
  max-width: 62ch;
  color: var(--texte-doux);
  margin-bottom: 52px;
  font-size: 17px;
}

/* —— Douleurs —— */
.douleurs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--encre);
}

.douleur {
  background: var(--blanc);
  padding: 32px 28px 36px;
  border-right: 1px solid var(--encre);
}

.douleur:last-child {
  border-right: none;
}

.douleur-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--chantier);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.douleur h3 {
  font-family: var(--display);
  font-weight: 700;
  font-stretch: 110%;
  font-size: 20px;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  margin-bottom: 12px;
  line-height: 1.2;
}

.douleur p {
  color: var(--texte-doux);
  font-size: 15px;
}

@media (max-width: 880px) {
  .douleurs {
    grid-template-columns: 1fr;
  }

  .douleur {
    border-right: none;
    border-bottom: 1px solid var(--encre);
  }

  .douleur:last-child {
    border-bottom: none;
  }
}

/* —— Lots produit —— */
.lots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--encre);
  background: var(--encre);
}

.lot {
  background: var(--blanc);
  padding: 36px 30px 40px;
  display: flex;
  flex-direction: column;
}

.lot:not(:last-child) {
  border-right: 1px solid var(--encre);
}

.lot-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--chantier);
  text-transform: uppercase;
  margin-bottom: 22px;
}

.lot h3 {
  font-family: var(--display);
  font-weight: 700;
  font-stretch: 110%;
  font-size: 21px;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  margin-bottom: 14px;
  line-height: 1.2;
}

.lot p {
  color: var(--texte-doux);
  font-size: 15px;
  flex-grow: 1;
}

.lot ul {
  list-style: none;
  margin-top: 22px;
  border-top: 1px solid var(--ligne);
  padding-top: 18px;
}

.lot li {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  padding: 5px 0 5px 18px;
  position: relative;
}

.lot li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--chantier);
}

@media (max-width: 880px) {
  .lots {
    grid-template-columns: 1fr;
  }

  .lot:not(:last-child) {
    border-right: none;
    border-bottom: 1px solid var(--encre);
  }
}

/* —— Pipeline —— */
.pipeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 28px;
}

.phase {
  border-top: 2px solid var(--encre);
  padding-top: 20px;
  position: relative;
}

.phase::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--chantier);
}

.phase-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--chantier);
  margin-bottom: 10px;
  display: block;
}

.phase h3 {
  font-family: var(--display);
  font-weight: 700;
  font-stretch: 110%;
  font-size: 17px;
  text-transform: uppercase;
  margin-bottom: 8px;
  line-height: 1.25;
}

.phase p {
  font-size: 14px;
  color: var(--texte-doux);
}

@media (max-width: 1000px) {
  .pipeline {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 560px) {
  .pipeline {
    grid-template-columns: 1fr;
  }
}

/* —— Principes split —— */
.principes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--encre);
}

.principe {
  padding: 40px 36px;
  background: var(--blanc);
}

.principe:first-child {
  border-right: 1px solid var(--encre);
  background: var(--encre-fonce);
  color: var(--blanc);
}

.principe:first-child .section-tag {
  color: var(--chantier);
}

.principe:first-child h3 {
  color: var(--blanc);
}

.principe:first-child p {
  color: #afc4d2;
}

.principe h3 {
  font-family: var(--display);
  font-weight: 700;
  font-stretch: 110%;
  font-size: 24px;
  text-transform: uppercase;
  margin: 8px 0 16px;
  line-height: 1.15;
}

.principe p {
  color: var(--texte-doux);
  font-size: 16px;
  max-width: 42ch;
}

.principe ul {
  list-style: none;
  margin-top: 24px;
}

.principe li {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  padding: 7px 0 7px 18px;
  position: relative;
  border-top: 1px solid var(--ligne);
}

.principe:first-child li {
  border-top-color: #3c5e76;
  color: #d7e4ec;
}

.principe li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--chantier);
}

@media (max-width: 880px) {
  .principes {
    grid-template-columns: 1fr;
  }

  .principe:first-child {
    border-right: none;
    border-bottom: 1px solid var(--encre);
  }
}

/* —— Publics —— */
.publics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}

.public {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--texte-muted);
  padding: 10px 0;
  border-bottom: 1px solid var(--ligne);
}

.public::before {
  content: "/ ";
  color: var(--chantier);
}

/* —— Preuve bandeau —— */
.preuve {
  background: var(--blanc);
  border: 1px solid var(--encre);
  padding: 40px 44px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 36px;
  align-items: center;
}

.preuve-chiffre {
  font-family: var(--display);
  font-weight: 800;
  font-stretch: 115%;
  font-size: clamp(64px, 10vw, 96px);
  line-height: 0.9;
  color: var(--chantier);
  letter-spacing: -0.03em;
}

.preuve-chiffre span {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--encre);
  margin-top: 10px;
}

.preuve h3 {
  font-family: var(--display);
  font-weight: 700;
  font-stretch: 110%;
  font-size: 22px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.preuve p {
  color: var(--texte-doux);
  font-size: 16px;
  max-width: 54ch;
}

@media (max-width: 720px) {
  .preuve {
    grid-template-columns: 1fr;
    padding: 32px 24px;
    gap: 20px;
  }
}

/* —— Contact —— */
.contact {
  background: var(--encre-fonce);
  color: var(--blanc);
  border-top: 1px solid var(--encre);
}

.contact .section-tag {
  color: var(--chantier);
}

.contact h2 {
  color: var(--blanc);
}

.contact > .section-inner > p {
  color: #afc4d2;
  max-width: 56ch;
  margin-bottom: 40px;
  font-size: 17px;
}

.form-contact {
  max-width: 680px;
}

.form-ligne {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

@media (max-width: 640px) {
  .form-ligne {
    grid-template-columns: 1fr;
  }
}

.form-champ {
  margin-bottom: 22px;
  display: flex;
  flex-direction: column;
}

.form-champ label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #afc4d2;
  margin-bottom: 8px;
}

.form-champ input,
.form-champ textarea {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid #3c5e76;
  color: var(--blanc);
  font-family: var(--body);
  font-size: 16px;
  padding: 13px 14px;
  border-radius: 0;
  transition: border-color 0.2s, background 0.2s;
}

.form-champ input:focus,
.form-champ textarea:focus {
  outline: none;
  border-color: var(--chantier);
  background: rgba(255, 255, 255, 0.1);
}

.form-champ textarea {
  resize: vertical;
  min-height: 130px;
}

.form-champ ::placeholder {
  color: #6e8ca0;
}

.form-envoyer {
  border: none;
  cursor: pointer;
  font-size: 14px;
}

.champ-piege {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

.contact-note {
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6e8ca0;
}

.contact-alt {
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid #3c5e76;
  display: flex;
  flex-wrap: wrap;
  gap: 20px 36px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.contact-alt a {
  color: #d7e4ec;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

.contact-alt a:hover {
  color: var(--chantier);
  border-color: var(--chantier);
}

.form-message {
  margin-bottom: 24px;
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  border: 1px solid #3c5e76;
}

.form-message.ok {
  border-color: #3d9a6a;
  color: #b8e0c8;
  background: rgba(61, 154, 106, 0.12);
}

.form-message.erreur {
  border-color: var(--chantier);
  color: #ffd2b0;
  background: rgba(232, 101, 13, 0.12);
}

/* —— Footer —— */
footer {
  border-top: 1px solid var(--ligne);
  background: var(--acier);
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 22px 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  align-items: center;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--texte-muted);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--encre);
}

.footer-brand img {
  height: 22px;
  width: auto;
}

.footer-inner a:not(.footer-brand) {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

.footer-inner a:not(.footer-brand):hover {
  color: var(--chantier);
  border-color: var(--chantier);
}

/* —— Reveal —— */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.vu {
  opacity: 1;
  transform: none;
}

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

  html {
    scroll-behavior: auto;
  }
}

@media (max-width: 720px) {
  section {
    padding: 64px 20px;
  }

  .hero {
    padding: 64px 20px 72px;
  }
}