:root {
  --ink: oklch(15% 0.02 235);
  --muted: oklch(43% 0.03 235);
  --paper: oklch(98% 0.012 102);
  --sheet: oklch(94% 0.03 102);
  --line: oklch(72% 0.035 102);
  --acid: oklch(83% 0.22 131);
  --cyan: oklch(76% 0.16 205);
  --amber: oklch(84% 0.17 82);
  --red: oklch(67% 0.2 28);
  --max: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 88% 8%, oklch(76% 0.16 205 / 0.2), transparent 22rem),
    linear-gradient(90deg, transparent 0 56px, oklch(15% 0.02 235 / 0.08) 56px 57px, transparent 57px 100%),
    var(--paper);
  font-family: "Trebuchet MS", Verdana, Geneva, sans-serif;
  font-size: 19px;
  line-height: 1.52;
  letter-spacing: 0;
  overflow-x: hidden;
}

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

h1,
h2,
h3,
p {
  margin-top: 0;
}

p {
  max-width: 72ch;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 clamp(18px, 3vw, 42px);
  border-bottom: 2px solid var(--ink);
  background: oklch(98% 0.012 102 / 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 950;
}

.brand span {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--ink);
  color: var(--acid);
  border-radius: 50%;
  font-size: 0.9rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 850;
}

nav a {
  padding: 8px 10px;
  border-bottom: 2px solid transparent;
}

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

.hero {
  width: min(var(--max), calc(100% - 36px));
  min-height: calc(100vh - 72px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  grid-template-areas:
    "head form"
    "rest form"
    "slip slip";
  gap: clamp(20px, 3vw, 40px) clamp(28px, 5vw, 54px);
  align-content: center;
  align-items: start;
  padding: clamp(48px, 7vw, 92px) 0;
}

.hero-head {
  grid-area: head;
}

.hero-rest {
  grid-area: rest;
}

.hero-form {
  grid-area: form;
  align-self: center;
}

.audit-slip {
  grid-area: slip;
  margin-top: clamp(18px, 3vw, 34px);
}

.tag,
.eyebrow {
  display: inline-flex;
  max-width: 100%;
  width: fit-content;
  margin-bottom: 18px;
  padding: 8px 12px;
  background: var(--acid);
  color: var(--ink);
  border: 2px solid var(--ink);
  font-size: 0.82rem;
  font-weight: 950;
  text-transform: uppercase;
}

h1 {
  max-width: 920px;
  margin-bottom: 24px;
  font-size: clamp(2.6rem, 6vw, 5.4rem);
  line-height: 0.92;
  letter-spacing: -0.05em;
}

.lead {
  color: var(--muted);
  font-size: clamp(1.08rem, 1.65vw, 1.36rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.primary,
.secondary {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 2px solid var(--ink);
  font-weight: 950;
  text-align: center;
}

.primary {
  background: var(--ink);
  color: var(--acid);
}

.secondary {
  background: var(--paper);
}

/* ---- Carte formulaire (hero + sections) ---- */
.lead-card {
  background: var(--sheet);
  border: 2px solid var(--ink);
  box-shadow: 10px 10px 0 var(--ink);
  padding: clamp(20px, 3vw, 30px);
}

.lead-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.78rem;
  font-weight: 950;
  text-transform: uppercase;
}

.lead-card-head b {
  background: var(--cyan);
  border: 2px solid var(--ink);
  padding: 4px 9px;
}

.lead-card-title {
  margin-bottom: 8px;
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
}

.lead-card-sub {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.98rem;
}

.lead-form {
  display: grid;
  gap: 10px;
}

.lead-form input,
.lead-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  font-family: inherit;
  font-size: 1rem;
}

.lead-form textarea {
  resize: vertical;
  min-height: 90px;
}

.lead-form input:focus,
.lead-form textarea:focus {
  outline: 3px solid var(--cyan);
  outline-offset: 0;
}

.lead-submit {
  min-height: 50px;
  padding: 12px 18px;
  border: 2px solid var(--ink);
  background: var(--ink);
  color: var(--acid);
  font-family: inherit;
  font-weight: 950;
  cursor: pointer;
}

.lead-submit:hover {
  background: var(--acid);
  color: var(--ink);
}

.lead-success {
  margin: 6px 0 0;
  padding: 12px 14px;
  background: var(--acid);
  border: 2px solid var(--ink);
  font-weight: 950;
}

.audit-slip {
  display: grid;
  grid-template-columns: 210px repeat(4, minmax(0, 1fr)) 260px;
  align-items: stretch;
  background: var(--sheet);
  border: 2px solid var(--ink);
  box-shadow: 10px 10px 0 var(--ink);
}

.slip-head {
  display: grid;
  align-content: center;
  gap: 12px;
  padding: 18px;
  border-right: 2px solid var(--ink);
  background: var(--cyan);
}

.slip-head span {
  font-size: 0.78rem;
  font-weight: 950;
  text-transform: uppercase;
}

.slip-head b {
  font-size: 1.6rem;
}

.slip-line {
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 16px 18px;
  border-right: 2px dashed var(--ink);
}

.slip-line span {
  font-size: 1.45rem;
  font-weight: 950;
}

.slip-line em {
  font-style: normal;
  font-size: 0.82rem;
  font-weight: 950;
  text-transform: uppercase;
}

.pass em {
  color: oklch(45% 0.13 145);
}

.warn em {
  color: oklch(56% 0.16 72);
}

.fail em {
  color: var(--red);
}

.audit-slip > p {
  margin: 0;
  padding: 18px;
  color: var(--muted);
  align-self: center;
}

.definition,
.factors,
.method,
.tools,
.fit,
.audit,
.faq,
.closing,
.contact {
  width: min(var(--max), calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(52px, 8vw, 104px) 0;
}

.definition {
  border-top: 2px solid var(--ink);
}

.definition > p:not(.eyebrow) {
  color: var(--muted);
  font-size: clamp(1.08rem, 1.6vw, 1.32rem);
}

h2 {
  max-width: 950px;
  margin-bottom: 24px;
  font-size: clamp(2.3rem, 5.2vw, 5.4rem);
  line-height: 0.94;
  letter-spacing: -0.055em;
}

h3 {
  margin-bottom: 10px;
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.factors {
  border-top: 2px solid var(--ink);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(260px, 0.45fr);
  gap: 32px;
  align-items: end;
}

.factor-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}

.factor-list li {
  display: grid;
  grid-template-columns: 70px minmax(220px, 0.42fr) minmax(0, 1fr);
  gap: 18px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 2px solid var(--ink);
}

.factor-list span {
  font-weight: 950;
  color: var(--red);
}

.factor-list b {
  font-size: 1.12rem;
}

.factor-list p {
  margin-bottom: 0;
  color: var(--muted);
}

.method {
  display: grid;
  grid-template-columns: 0.68fr 1fr;
  gap: clamp(30px, 6vw, 82px);
  border-top: 2px solid var(--ink);
}

.method-lines {
  display: grid;
  gap: 12px;
}

.method-lines p {
  max-width: none;
  margin: 0;
  padding: 18px 20px;
  background: var(--sheet);
  border: 2px solid var(--ink);
}

.tools {
  border-top: 2px solid var(--ink);
}

.tool-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tool-strip span {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 9px 13px;
  border: 2px solid var(--ink);
  background: var(--paper);
  font-weight: 850;
}

.fit {
  border-top: 2px solid var(--ink);
}

.fit-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.fit-list article {
  padding: 22px;
  background: var(--ink);
  color: var(--paper);
}

.fit-list p {
  color: oklch(88% 0.02 102);
}

.audit {
  display: grid;
  grid-template-columns: 0.68fr 1fr;
  gap: clamp(30px, 6vw, 82px);
  border-top: 2px solid var(--ink);
}

.deliverables {
  display: grid;
  gap: 0;
  border: 2px solid var(--ink);
}

.deliverables p {
  max-width: none;
  margin: 0;
  padding: 20px;
  border-bottom: 2px solid var(--ink);
  background: var(--paper);
  color: var(--muted);
}

.deliverables p:nth-child(2n) {
  background: var(--sheet);
}

.deliverables p:last-child {
  border-bottom: 0;
}

.faq {
  border-top: 2px solid var(--ink);
}

.faq-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.faq-list article {
  padding: 22px;
  border: 2px solid var(--ink);
  background: var(--paper);
}

.faq-list p {
  color: var(--muted);
}

/* ---- Section contact (formulaire on-page) ---- */
.contact {
  border-top: 2px solid var(--ink);
  display: grid;
  grid-template-columns: 0.85fr 1fr;
  gap: clamp(30px, 6vw, 72px);
  align-items: start;
}

.contact .contact-intro p {
  color: var(--muted);
  font-size: clamp(1.08rem, 1.6vw, 1.32rem);
}

.closing {
  margin-bottom: clamp(34px, 6vw, 82px);
  padding: clamp(32px, 6vw, 68px);
  border: 2px solid var(--ink);
  background: var(--acid);
  box-shadow: 12px 12px 0 var(--ink);
}

.closing p {
  color: var(--ink);
  font-size: clamp(1.1rem, 1.7vw, 1.32rem);
}

.closing .primary {
  background: var(--paper);
  color: var(--ink);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(18px, 4vw, 54px);
  background: var(--ink);
  color: var(--paper);
  font-size: 0.9rem;
  flex-wrap: wrap;
}

footer a {
  color: var(--acid);
  font-weight: 900;
}

/* ---- Page légale (mentions / confidentialité) ---- */
.legal {
  width: min(820px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(40px, 7vw, 88px) 0;
}

.legal h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
}

.legal h2 {
  margin-top: 38px;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
}

.legal p,
.legal li {
  color: var(--muted);
  max-width: none;
}

.legal ul {
  margin: 0 0 16px 22px;
}

.legal a.inline {
  font-weight: 900;
  text-decoration: underline;
}

@media (max-width: 980px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 18px;
  }

  nav {
    justify-content: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
    grid-template-areas:
      "head"
      "form"
      "rest"
      "slip";
  }

  .section-head,
  .method,
  .audit,
  .contact {
    grid-template-columns: 1fr;
  }

  .audit-slip {
    grid-template-columns: 1fr;
  }

  .slip-head,
  .slip-line {
    border-right: 0;
    border-bottom: 2px solid var(--ink);
  }

  .fit-list,
  .faq-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 18px;
    background: var(--paper);
  }

  .hero {
    width: min(100% - 24px, var(--max));
    min-height: auto;
    padding: 32px 0 56px;
  }

  /* Mobile form-first : le H1 reste premier, puis le formulaire juste en dessous. */
  .hero {
    grid-template-areas:
      "head"
      "form"
      "rest"
      "slip";
  }

  h1 {
    font-size: clamp(2.4rem, 12vw, 3.4rem);
    line-height: 0.94;
  }

  h2 {
    font-size: clamp(2.1rem, 11vw, 3.5rem);
  }

  .primary,
  .secondary,
  .lead-submit {
    width: 100%;
  }

  .slip-line,
  .factor-list li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .slip-line em {
    justify-self: start;
  }
}