:root {
  --ink: #17191d;
  --deep: #17191d;
  --ocean: #167fa3;
  --sea: #55d4ec;
  --foam: #e8f3f6;
  --ivory: #f7f8f8;
  --copper: #55d4ec;
  --font-body: Aptos, "Segoe UI Variable", "Segoe UI", Calibri, sans-serif;
  --font-display: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--font-body);
}
a {
  color: inherit;
  text-decoration: none;
}
.site-header {
  height: 88px;
  width: 100%;
  max-width: none;
  margin: auto;
  padding: 0 5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 248, 248, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(9, 45, 57, 0.13);
  box-shadow: 0 8px 24px rgba(23, 25, 29, 0.05);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
}
.brand > span:last-child strong {
  font-weight: 800;
}
.brand-symbol {
  width: 38px;
  height: 38px;
  object-fit: contain;
}
.desktop-nav {
  display: flex;
  gap: 34px;
  font-size: 15px;
  font-weight: 700;
}
.desktop-nav a {
  position: relative;
  padding: 33px 0 31px;
}
.desktop-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 23px;
  left: 0;
  height: 2px;
  background: var(--sea);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}
.desktop-nav a:hover,
.desktop-nav a:focus-visible {
  color: var(--ocean);
}
.desktop-nav a:hover::after,
.desktop-nav a:focus-visible::after {
  transform: scaleX(1);
}
.header-cta,
.button-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  background: var(--copper);
  color: #10262c;
  font-weight: 800;
}
.header-cta {
  padding: 13px 18px;
  font-size: 12px;
}
.mobile-menu {
  display: none;
  border: 0;
  background: none;
  color: var(--ink);
}
.hero {
  min-height: 690px;
  max-width: 1440px;
  margin: auto;
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  align-items: center;
  gap: 3vw;
  padding: 72px 5vw 84px;
  overflow: hidden;
}
[id] {
  scroll-margin-top: 105px;
}
.eyebrow,
.section-kicker {
  color: var(--ocean);
  text-transform: uppercase;
  letter-spacing: 0.17em;
  font-size: 13px;
  line-height: 1.35;
  font-weight: 800;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow span {
  width: 24px;
  height: 1px;
  background: var(--copper);
}
h1 {
  max-width: 760px;
  margin: 24px 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(50px, 5.35vw, 82px);
  line-height: 0.98;
  letter-spacing: -0.055em;
  font-weight: 400;
}
h1 em {
  color: var(--ocean);
  font-weight: 400;
}
.hero-lead {
  max-width: 650px;
  color: #505b60;
  font-size: 18px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 34px 0 28px;
}
.button-primary {
  padding: 17px 22px;
  font-size: 13px;
}
.button-primary:hover,
.header-cta:hover {
  background: #71d9ef;
}
.button-quiet {
  padding: 12px 2px;
  border-bottom: 1px solid var(--ink);
  font-size: 13px;
  font-weight: 700;
}
.trust-line {
  display: flex;
  flex-wrap: wrap;
  gap: 19px;
  color: #587176;
  font-size: 11px;
}
.trust-line span {
  display: flex;
  gap: 5px;
  align-items: center;
}
.hero-visual {
  min-height: 0;
  position: relative;
  padding: 14px 20px;
  border: 0px solid var(--ocean);
  border-radius: 12px;
  background: transparent;
  box-shadow: none;
  overflow: hidden;
}
.hero-visual > img {
  position: static;
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}
.hero-visual.brand-stage > img {
  object-position: center;
}
.hero-visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    145deg,
    rgba(4, 44, 56, 0.13),
    rgba(6, 74, 79, 0.2)
  );
}
.core {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 130px;
  height: 130px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 50%;
  background: rgba(248, 245, 237, 0.94);
  color: var(--deep);
  box-shadow:
    0 0 0 16px rgba(255, 255, 255, 0.08),
    0 20px 45px rgba(0, 0, 0, 0.2);
  text-align: center;
}
.core small {
  font-size: 11px;
  line-height: 1.3;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.signal {
  position: absolute;
  z-index: 2;
  color: white;
  font-size: 11px;
  display: flex;
  align-items: center;
  gap: 8px;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5);
}
.signal span {
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  border-radius: 50%;
  background: rgba(9, 45, 57, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #f0c49f;
  font-size: 9px;
}
.signal-a {
  top: 17%;
  left: 13%;
}
.signal-b {
  right: 7%;
  top: 39%;
}
.signal-c {
  left: 14%;
  bottom: 17%;
}
.manifesto {
  padding: 110px 8vw;
  text-align: center;
  background: var(--foam);
}
.manifesto blockquote {
  max-width: 930px;
  margin: 30px auto 24px;
  font:
    400 clamp(31px, 3.3vw, 52px)/1.18 Georgia,
    serif;
  letter-spacing: -0.035em;
}
.manifesto > p:last-child {
  max-width: 720px;
  margin: auto;
  color: #526c70;
  line-height: 1.75;
}
.solutions {
  max-width: 1280px;
  margin: auto;
  padding: 120px 5vw;
}
.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 60px;
  margin-bottom: 52px;
}
.section-heading h2,
.method h2,
.diagnostic h2 {
  margin: 15px 0 0;
  font:
    400 clamp(40px, 4vw, 62px)/1.02 Georgia,
    serif;
  letter-spacing: -0.045em;
}
.section-heading > p {
  max-width: 440px;
  color: #536c71;
  line-height: 1.7;
}
.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.offer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.offer-card { min-height: 520px; padding: 34px; display: flex; flex-direction: column; background: #e2f3f6; border-top: 4px solid var(--sea); }
.offer-card:nth-child(2) { background: #edf0f1; }
.offer-card:nth-child(3) { background: #dff1ee; }
.offer-card .tag { max-width: 225px; text-align: center; line-height: 1.35; }
.offer-card h3 { margin: 45px 0 15px; font: 400 31px/1.08 Georgia, serif; }
.offer-card > p { color: #4d676c; line-height: 1.65; }
.offer-card ul { padding: 0; margin: 22px 0; list-style: none; }
.offer-card li { display: flex; align-items: flex-start; gap: 9px; padding: 7px 0; font-size: 13px; font-weight: 600; }
.offer-card li svg { flex: 0 0 auto; color: var(--ocean); }
.offer-card > a { margin-top: auto; padding-top: 20px; border-top: 1px solid rgba(9,45,57,.2); display: flex; justify-content: space-between; font-size: 13px; font-weight: 800; }
.shared-direction { margin-top: 18px; padding: 36px 42px; display: grid; grid-template-columns: .9fr 1.4fr auto; align-items: center; gap: 5vw; background: var(--deep); color: white; }
.shared-direction svg { color: var(--sea); }
.shared-direction h3 { margin: 8px 0 0; font: 400 28px/1.12 Georgia, serif; }
.shared-direction p { color: #bfd0d1; line-height: 1.65; font-size: 14px; }
.shared-direction a { display: flex; align-items: center; gap: 12px; white-space: nowrap; color: var(--sea); font-size: 13px; font-weight: 800; }
.solution-card {
  min-height: 540px;
  padding: 42px;
  display: flex;
  flex-direction: column;
  background: #dff3f7;
}
.solution-card.warm {
  background: #e6e9ea;
}
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.icon-box {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.62);
  color: var(--ocean);
}
.tag {
  border: 1px solid rgba(9, 45, 57, 0.25);
  border-radius: 30px;
  padding: 9px 14px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 800;
}
.card-index {
  margin: 50px 0 10px;
  font-size: 10px;
  letter-spacing: 0.16em;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--ocean);
}
.solution-card h3 {
  margin: 0 0 16px;
  font:
    400 36px/1.1 Georgia,
    serif;
}
.solution-card > p:not(.card-index) {
  color: #456368;
  line-height: 1.65;
}
.solution-card ul {
  padding: 0;
  margin: 24px 0;
  list-style: none;
}
.solution-card li {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  font-size: 13px;
  font-weight: 600;
}
.solution-card > a {
  margin-top: auto;
  padding-top: 22px;
  border-top: 1px solid rgba(9, 45, 57, 0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  font-weight: 800;
}
.flow-mini {
  margin: 42px 0;
  padding: 28px 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.4);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.flow-mini svg {
  width: 14px;
  color: var(--copper);
}
.method {
  padding: 110px 8vw;
  background: var(--deep);
  color: white;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 10vw;
}
.section-kicker.light {
  color: #75c6bf;
}
.method ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
.method li {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 20px;
  padding: 27px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}
.method li > span {
  color: #72c4bd;
  font:
    italic 19px Georgia,
    serif;
}
.method h3 {
  margin: 0 0 7px;
  font-size: 17px;
}
.method li p {
  margin: 0;
  color: #b9cacb;
  line-height: 1.6;
  font-size: 14px;
}
.diagnostic {
  padding: 115px 8vw;
  display: grid;
  grid-template-columns: minmax(280px, .8fr) minmax(520px, 1.2fr);
  gap: 6vw;
  align-items: start;
}
.contact-form {
  padding: 38px;
  background: white;
  border-top: 4px solid var(--copper);
  box-shadow: 0 24px 60px rgba(22, 49, 56, 0.12);
}
.form-heading {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 28px;
}
.form-heading > span {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--deep);
  color: var(--sea);
}
.form-heading .section-kicker { margin: 0 0 4px; }
.form-heading h3 { margin: 0; font: 700 25px var(--font-display); }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-grid label {
  color: var(--ink);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .02em;
}
.form-grid label em { color: #718487; font-size: 10px; font-style: normal; font-weight: 500; }
.form-grid input, .form-grid select, .form-grid textarea {
  width: 100%;
  margin-top: 7px;
  padding: 13px 14px;
  border: 1px solid #c9d6d8;
  border-radius: 2px;
  background: #fbfcfc;
  color: var(--ink);
  font: 500 14px var(--font-body);
  outline: none;
}
.form-grid textarea { resize: vertical; line-height: 1.55; }
.form-grid input:focus, .form-grid select:focus, .form-grid textarea:focus {
  border-color: var(--ocean);
  box-shadow: 0 0 0 3px rgba(85, 212, 236, .2);
}
.form-wide { grid-column: 1 / -1; }
.form-privacy { margin: 18px 0; color: #687d81; font-size: 11px; line-height: 1.5; }
.contact-form button {
  width: 100%;
  padding: 16px 18px;
  border: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--deep);
  color: var(--sea);
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
}
.contact-form button:hover { background: var(--ocean); color: white; }
.form-success { display: flex; align-items: center; gap: 8px; margin: 14px 0 0; color: #17684d; font-size: 12px; font-weight: 700; }
.form-error { margin: 14px 0 0; color: #a23b3b; font-size: 12px; font-weight: 700; }
.contact-form button:disabled { opacity: .65; cursor: wait; }
.website-trap { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.diagnostic-reassurance { display: flex; flex-wrap: wrap; gap: 12px 20px; margin-top: 28px; }
.diagnostic-reassurance span { display: flex; align-items: center; gap: 7px; color: #405c61; font-size: 12px; font-weight: 700; }
.diagnostic-reassurance svg { color: var(--ocean); }
.direct-email { margin-top: 34px; color: #62787c; font-size: 12px; line-height: 1.8; }
.direct-email a { color: var(--ocean); font-size: 14px; font-weight: 800; text-decoration: underline; text-underline-offset: 4px; }

.diagnostic-card .email-link {
  display: inline;
  padding: 0;
  color: inherit;
  background: none;
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.diagnostic-card .email-link:hover {
  background: none;
  color: var(--cyan-dark);
}

.footer-email {
  color: inherit;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}
footer {
  padding: 45px 5vw;
  background: #17191b;
  color: white;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr auto;
  align-items: center;
  gap: 30px;
}
footer > p {
  margin: 0;
  color: #9db3b5;
  font-size: 11px;
  line-height: 1.6;
  text-align: center;
}
.back-to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 90;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 2px solid var(--sea);
  border-radius: 50%;
  background: var(--deep);
  color: white;
  box-shadow: 0 12px 28px rgba(23, 25, 29, 0.24);
  transition: transform 180ms ease, background 180ms ease;
}
.back-to-top:hover,
.back-to-top:focus-visible {
  background: var(--ocean);
  transform: translateY(-3px);
}
.copyright {
  text-align: right;
}
.use-cases {
  padding: 115px 8vw;
  background: var(--deep);
  color: white;
}
.use-cases-intro {
  display: grid;
  grid-template-columns: 0.8fr 1.4fr;
  column-gap: 8vw;
  align-items: end;
  margin-bottom: 54px;
}
.use-cases-intro .section-kicker {
  grid-column: 1/-1;
}
.use-cases-intro h2 {
  margin: 15px 0 0;
  font:
    400 clamp(40px, 4vw, 62px)/1.02 Georgia,
    serif;
  letter-spacing: -0.045em;
}
.use-cases-intro > p:last-child {
  color: #b9cacb;
  line-height: 1.7;
  max-width: 520px;
}
.use-cases-intro .intervention-callout {
  max-width: 570px;
  margin: 0;
  padding: 20px 24px;
  display: grid;
  gap: 7px;
  border-left: 4px solid var(--sea);
  background: rgba(85, 212, 236, 0.09);
  color: #d6e5e7;
}
.intervention-callout strong {
  color: white;
  font-size: 18px;
  font-weight: 800;
}
.intervention-callout span {
  font-size: 15px;
  line-height: 1.65;
}
.use-case-list {
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}
.situation-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(255,255,255,.18); }
.situation { padding: 30px 26px 10px 0; border-right: 1px solid rgba(255,255,255,.18); }
.situation + .situation { padding-left: 26px; }
.situation:last-child { border-right: 0; }
.situation > span { color: var(--sea); font: italic 16px Georgia, serif; }
.situation > svg { display: block; margin: 35px 0 24px; color: var(--sea); }
.situation h3 { min-height: 54px; margin: 0 0 12px; font: 400 23px/1.16 Georgia, serif; }
.situation p { color: #b9cacb; font-size: 13px; line-height: 1.65; }
.custom-tools { padding: 110px 8vw; background: #f7f8f8; }
.custom-tools-heading { display: grid; grid-template-columns: 1.25fr .75fr; gap: 8vw; align-items: end; margin-bottom: 52px; }
.custom-tools-heading h2 { max-width: 820px; margin: 15px 0 0; font: 400 clamp(38px, 3.7vw, 58px)/1.05 Georgia, serif; letter-spacing: -.045em; }
.custom-tools-promise { padding-left: 28px; border-left: 3px solid var(--sea); }
.custom-tools-promise > svg { color: var(--ocean); }
.custom-tools-promise p { color: #526b70; font-size: 14px; line-height: 1.7; }
.custom-tools-promise a { display: inline-flex; align-items: center; gap: 10px; margin-top: 8px; color: var(--ocean); font-size: 13px; font-weight: 800; }
.tool-example-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(9,45,57,.18); border-bottom: 1px solid rgba(9,45,57,.18); }
.tool-example-grid article { min-height: 245px; padding: 30px 26px; border-right: 1px solid rgba(9,45,57,.18); }
.tool-example-grid article:first-child { padding-left: 0; }
.tool-example-grid article:last-child { border-right: 0; padding-right: 0; }
.tool-example-grid svg { color: var(--ocean); }
.tool-example-grid h3 { margin: 34px 0 12px; font: 400 22px/1.15 Georgia, serif; }
.tool-example-grid p { margin: 0; color: #587176; font-size: 13px; line-height: 1.65; }
.custom-tools-note { margin: 24px 0 0; color: #587176; font-size: 12px; font-style: italic; }
.project-proof { padding: 90px 8vw; display: grid; grid-template-columns: 1.15fr .85fr; gap: 9vw; align-items: center; background: white; }
.project-proof h2 { margin: 15px 0; font: 400 clamp(36px,3.5vw,54px)/1.04 Georgia,serif; letter-spacing: -.04em; }
.project-proof p { color: #526b70; line-height: 1.72; }
.proof-points { display: grid; gap: 12px; }
.proof-points span { padding: 18px; display: flex; align-items: center; gap: 13px; background: var(--foam); font-size: 13px; font-weight: 700; }
.proof-points svg { width: 17px; color: var(--ocean); }
.use-case {
  display: grid;
  grid-template-columns: 0.75fr 1.35fr 0.9fr;
  gap: 6vw;
  padding: 34px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  align-items: start;
}
.case-heading {
  display: grid;
  grid-template-columns: 38px 34px 1fr;
  align-items: center;
  color: #78c8c0;
}
.case-heading > span {
  font:
    italic 17px Georgia,
    serif;
}
.case-heading p {
  margin: 0;
  color: white;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.use-case h3 {
  margin: 0 0 12px;
  font:
    400 27px/1.15 Georgia,
    serif;
}
.use-case > div:nth-child(2) > p {
  margin: 0;
  color: #b9cacb;
  line-height: 1.65;
  font-size: 14px;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chips span {
  padding: 7px 10px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 20px;
  color: #d8e4e4;
  font-size: 10px;
}
.principles {
  padding: 110px 8vw;
  background: var(--foam);
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 8vw;
}
.principles > div:first-child > svg {
  color: var(--copper);
  margin-bottom: 22px;
}
.principles h2 {
  margin: 15px 0 0;
  font:
    400 clamp(38px, 3.5vw, 56px)/1.04 Georgia,
    serif;
  letter-spacing: -0.04em;
}
.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.principle-grid article {
  padding: 28px 24px;
  background: white;
  border-top: 3px solid var(--sea);
}
.principle-grid span {
  color: var(--copper);
  font:
    italic 16px Georgia,
    serif;
}
.principle-grid h3 {
  margin: 30px 0 10px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.3;
}
.principle-grid p {
  margin: 0;
  color: #587176;
  font-size: 12px;
  line-height: 1.65;
}
.diagnostic-lead {
  max-width: 640px;
  color: #526b70;
  line-height: 1.7;
}

/* Une typographie plus souple et une hiérarchie plus équilibrée. */
h1,
.manifesto blockquote,
.section-heading h2,
.method h2,
.diagnostic h2,
.offer-card h3,
.shared-direction h3,
.solution-card h3,
.diagnostic-card h3,
.use-cases-intro h2,
.situation h3,
.custom-tools-heading h2,
.tool-example-grid h3,
.project-proof h2,
.use-case h3,
.principles h2 {
  font-family: var(--font-display);
}
h1 {
  font-size: clamp(47px, 4.8vw, 74px);
  line-height: 1.02;
  letter-spacing: -0.04em;
}
.section-heading h2,
.method h2,
.diagnostic h2,
.use-cases-intro h2 {
  font-size: clamp(37px, 3.45vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.035em;
}
.principles h2,
.custom-tools-heading h2,
.project-proof h2 {
  font-size: clamp(35px, 3.15vw, 50px);
  line-height: 1.08;
  letter-spacing: -0.03em;
}
.manifesto blockquote {
  font-size: clamp(29px, 2.9vw, 46px);
}
.section-heading > p,
.use-cases-intro > p:last-child,
.custom-tools-promise p,
.project-proof p,
.diagnostic-lead,
.manifesto > p:last-child {
  font-size: 16px;
}
.offer-card > p,
.offer-card li,
.shared-direction p,
.method li p,
.diagnostic-card p,
.situation p,
.tool-example-grid p,
.use-case > div:nth-child(2) > p,
.principle-grid p {
  font-size: 15px;
  line-height: 1.7;
}
.offer-card > a,
.shared-direction a,
.diagnostic-card a,
.custom-tools-promise a,
.proof-points span {
  font-size: 14px;
}
.principle-grid h3 {
  font-size: 18px;
}
.situation h3,
.tool-example-grid h3 {
  font-size: 24px;
}
@media (max-width: 900px) {
  .header-cta {
    display: none;
  }
  .site-header {
    height: auto;
    min-height: 72px;
    padding-block: 13px;
    flex-wrap: wrap;
    gap: 10px 20px;
  }
  .desktop-nav {
    order: 3;
    width: 100%;
    display: flex;
    gap: 24px;
    overflow-x: auto;
    border-top: 1px solid rgba(9, 45, 57, 0.1);
    font-size: 14px;
    scrollbar-width: none;
  }
  .desktop-nav::-webkit-scrollbar {
    display: none;
  }
  .desktop-nav a {
    flex: 0 0 auto;
    padding: 12px 0 5px;
    white-space: nowrap;
  }
  .desktop-nav a::after {
    bottom: 0;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-top: 55px;
  }
  .hero-visual {
    min-height: 0;
  }
  .section-heading {
    align-items: start;
    flex-direction: column;
  }
  .solution-grid,
  .offer-grid,
  .method,
  .diagnostic,
  .principles,
  .use-cases-intro,
  .custom-tools-heading {
    grid-template-columns: 1fr;
  }
  .shared-direction { grid-template-columns: 1fr; }
  .situation-grid { grid-template-columns: 1fr 1fr; }
  .situation:nth-child(2) { border-right: 0; }
  .project-proof { grid-template-columns: 1fr; }
  .tool-example-grid { grid-template-columns: 1fr 1fr; }
  .tool-example-grid article:nth-child(2) { border-right: 0; }
  .tool-example-grid article:first-child, .tool-example-grid article:last-child { padding: 30px 26px; }
  .use-case {
    grid-template-columns: 1fr 1.5fr;
  }
  .use-case .chips {
    grid-column: 2;
  }
  .principle-grid {
    grid-template-columns: 1fr;
  }
  .method {
    gap: 55px;
  }
  .diagnostic-card {
    max-width: 520px;
  }
  footer {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .copyright {
    text-align: center;
  }
}
@media (max-width: 580px) {
  .hero {
    padding-inline: 24px;
  }
  .back-to-top {
    right: 16px;
    bottom: 16px;
    width: 46px;
    height: 46px;
  }
  .hero-actions {
    align-items: stretch;
    flex-direction: column;
    gap: 8px;
  }
  .button-quiet {
    text-align: center;
  }
  .trust-line {
    flex-direction: column;
    gap: 9px;
  }
  .hero-visual {
    min-height: 0;
    padding-inline: 12px;
  }
  .signal-b {
    right: 2%;
  }
  .manifesto,
  .solutions,
  .method,
  .diagnostic,
  .use-cases,
  .principles,
  .custom-tools {
    padding: 80px 24px;
  }
  .solution-card {
    padding: 28px;
    min-height: 500px;
  }
  .offer-card { min-height: 470px; padding: 28px; }
  .situation-grid { grid-template-columns: 1fr; }
  .situation, .situation + .situation { padding: 30px 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.18); }
  .situation h3 { min-height: 0; }
  .shared-direction { padding: 30px 26px; }
  .project-proof { padding: 80px 24px; }
  .custom-tools-promise { padding-left: 20px; }
  .tool-example-grid { grid-template-columns: 1fr; }
  .tool-example-grid article, .tool-example-grid article:first-child, .tool-example-grid article:last-child { min-height: 0; padding: 28px 0; border-right: 0; border-bottom: 1px solid rgba(9,45,57,.18); }
  .tool-example-grid article:last-child { border-bottom: 0; }
  .tool-example-grid h3 { margin-top: 20px; }
  .flow-mini {
    padding-inline: 8px;
  }
  .flow-mini span {
    font-size: 9px;
  }
  .diagnostic {
    gap: 45px;
  }
  .contact-form { padding: 28px 22px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-wide { grid-column: 1; }
  .use-case {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .use-case .chips {
    grid-column: 1;
  }
  .case-heading {
    grid-template-columns: 34px 30px 1fr;
  }
}


/* Ajustements spécifiques à la version statique OVH. */
.icon {
  width: 1.5em;
  height: 1.5em;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon-box .icon { width: 25px; height: 25px; }
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--deep);
  color: white;
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }
[hidden] { display: none !important; }
.form-status { margin: 14px 0 0; font-size: 12px; font-weight: 700; line-height: 1.5; }
.form-status.success { color: #17684d; }
.form-status.error { color: #a23b3b; }
.form-status a { text-decoration: underline; text-underline-offset: 3px; }
.back-to-top { opacity: 0; pointer-events: none; }
.back-to-top.is-visible { opacity: 1; pointer-events: auto; }