/* IOTA — feuille de style commune
   Charte : rouge-iota #C31435, noir #0B0B0B, gris #626262,
   gris-clair #C8C2C4, gris-tres-clair #EFEDEE, Arial/Helvetica. */

:root {
  --rouge-iota: #C31435;
  --accent-on-dark: #FF9EB0;
  --noir: #0B0B0B;
  --gris: #626262;
  --gris-clair: #C8C2C4;
  --gris-tres-clair: #EFEDEE;
  --blanc: #FFFFFF;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--blanc);
  color: var(--noir);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

.wrap {
  width: min(92vw, var(--max-width));
  margin: 0 auto;
}

/* Eyebrow / kicker */
.eyebrow {
  display: block;
  font-size: 12px;
  font-weight: bold;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--rouge-iota);
  margin: 0 0 12px;
}

h1, h2, h3, h4 {
  font-family: Arial, Helvetica, sans-serif;
  font-weight: bold;
  margin: 0;
  color: var(--noir);
}

h1 {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.015em;
}

h2 {
  font-size: 28px;
  line-height: 1.2;
}

h3 {
  font-size: 19px;
  line-height: 1.3;
}

p {
  margin: 0 0 16px;
}

.lede {
  font-size: 19px;
  line-height: 1.55;
  color: var(--gris);
  max-width: 640px;
}

.muted {
  color: var(--gris);
}

/* ---------- Header ---------- */

.site-header {
  border-bottom: 1px solid var(--gris-clair);
  background: var(--blanc);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo {
  display: block;
  height: 32px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  text-decoration: none;
  font-size: 14px;
  font-weight: bold;
  color: var(--noir);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  border-bottom-color: var(--rouge-iota);
}

.nav-cta {
  display: inline-block;
  background: var(--noir);
  color: var(--blanc) !important;
  padding: 10px 18px;
  font-size: 13px;
  border: none !important;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--gris-clair);
  padding: 8px 10px;
  font-size: 14px;
  font-weight: bold;
}

@media (max-width: 780px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    top: 76px;
    left: 0;
    right: 0;
    background: var(--blanc);
    border-bottom: 1px solid var(--gris-clair);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 4vw 18px;
    display: flex;
    position: static;
    width: 100%;
  }

  .site-header .wrap {
    height: auto;
    min-height: 76px;
    flex-wrap: wrap;
  }

  .main-nav.is-collapsible {
    position: absolute;
    display: none;
  }

  .main-nav.is-collapsible.open {
    display: flex;
  }

  .main-nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--gris-tres-clair);
  }

  .nav-cta {
    text-align: center;
    margin-top: 10px;
  }
}

/* ---------- Hero ---------- */

.hero {
  padding: 76px 0 64px;
  border-bottom: 1px solid var(--gris-clair);
}

.hero h1 {
  max-width: 820px;
}

.hero .lede {
  margin-top: 22px;
  font-size: 22px;
  color: var(--noir);
}

.hero-cost {
  background: var(--noir);
  color: var(--blanc);
  padding: 68px 0 72px;
}

.hero-cost h1 {
  max-width: 940px;
  color: var(--blanc);
}

.hero-cost .lede {
  color: var(--gris-clair);
}

.hero-cost .btn-primary {
  background: var(--rouge-iota);
  border-color: var(--rouge-iota);
  color: var(--blanc);
}

.hero-cost .btn-primary:hover {
  background: var(--blanc);
  border-color: var(--blanc);
  color: var(--noir);
}

.hero-cost .btn-secondary {
  background: transparent;
  border-color: var(--blanc);
  color: var(--blanc);
}

.hero-cost .btn-secondary:hover {
  border-color: var(--rouge-iota);
  color: var(--rouge-iota);
}

#comment {
  scroll-margin-top: 76px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.page-hero {
  padding: 56px 0 44px;
  border-bottom: 1px solid var(--gris-clair);
}

.page-hero .lede {
  margin-top: 16px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: bold;
  font-size: 14px;
  padding: 13px 22px;
  border: 1px solid var(--noir);
  cursor: pointer;
  background: var(--blanc);
  color: var(--noir);
}

.btn-primary {
  background: var(--noir);
  color: var(--blanc);
}

.btn-primary:hover {
  background: var(--rouge-iota);
  border-color: var(--rouge-iota);
}

.btn-secondary:hover {
  border-color: var(--rouge-iota);
  color: var(--rouge-iota);
}

/* ---------- Sections ---------- */

section {
  padding: 64px 0;
  border-bottom: 1px solid var(--gris-clair);
}

section:last-of-type {
  border-bottom: none;
}

.section-head {
  max-width: 680px;
  margin-bottom: 40px;
}

/* ---------- Triptych (why/how/what) ---------- */

.triptych {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--gris-clair);
  border: 1px solid var(--gris-clair);
}

.triptych-item {
  background: var(--blanc);
  padding: 28px 26px;
}

.triptych-item .eyebrow {
  margin-bottom: 16px;
}

.triptych-item p {
  color: var(--noir);
  font-size: 15px;
  margin: 0;
}

@media (max-width: 780px) {
  .triptych {
    grid-template-columns: 1fr;
  }
}

/* ---------- Cards / grid ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.grid.cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 900px) {
  .grid,
  .grid.cols-2,
  .grid.cols-4 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .grid,
  .grid.cols-2,
  .grid.cols-4 {
    grid-template-columns: 1fr;
  }
}

.card {
  border: 1px solid var(--gris-clair);
  padding: 24px;
  background: var(--blanc);
}

.card h3 {
  margin-bottom: 10px;
}

.card p {
  color: var(--gris);
  font-size: 14.5px;
  margin: 0;
}

.card .tag {
  display: inline-block;
  font-size: 10.5px;
  font-weight: bold;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--rouge-iota);
  border: 1px solid var(--rouge-iota);
  padding: 3px 8px;
  margin-bottom: 14px;
}

/* ---------- Steps (method) ---------- */

.steps {
  display: flex;
  flex-direction: column;
}

.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-top: 1px solid var(--gris-tres-clair);
}

.step:first-child {
  border-top: none;
}

.step-index {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 34px;
  color: var(--gris-clair);
  line-height: 1;
}

.step h3 {
  margin-bottom: 8px;
}

.step p {
  color: var(--gris);
  margin: 0;
  max-width: 640px;
}

/* ---------- Flow (connected cards, distinct from numbered .steps) ---------- */

.flow {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--gris-clair);
}

.flow-step {
  flex: 1;
  padding: 24px;
  min-width: 0;
}

.flow-meta {
  display: block;
  font-size: 10.5px;
  font-weight: bold;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--rouge-iota);
  margin-bottom: 10px;
}

.flow-step h3 {
  margin-bottom: 8px;
}

.flow-step p {
  color: var(--gris);
  font-size: 14px;
  margin: 0;
}

.flow-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  color: var(--rouge-iota);
  font-size: 18px;
  border-left: 1px solid var(--gris-clair);
  border-right: 1px solid var(--gris-clair);
  flex-shrink: 0;
}

@media (max-width: 780px) {
  .flow {
    flex-direction: column;
  }

  .flow-arrow {
    width: 100%;
    height: 32px;
    border-left: none;
    border-right: none;
    border-top: 1px solid var(--gris-clair);
    border-bottom: 1px solid var(--gris-clair);
  }
}

/* ---------- Quote / conviction blocks ---------- */

.quote-block {
  border-left: 4px solid var(--rouge-iota);
  padding: 4px 0 4px 20px;
  margin: 0 0 20px;
  font-size: 18px;
  line-height: 1.5;
}

.conviction {
  padding: 26px 0;
  border-top: 1px solid var(--gris-tres-clair);
}

.conviction:first-child {
  border-top: none;
}

.conviction h3 {
  margin-bottom: 10px;
}

.conviction p {
  color: var(--gris);
  max-width: 720px;
}

/* ---------- List with red markers ---------- */

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

.check-list li {
  position: relative;
  padding: 8px 0 8px 22px;
  color: var(--noir);
  font-size: 15px;
  border-top: 1px solid var(--gris-tres-clair);
}

.check-list li:first-child {
  border-top: none;
}

.check-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--rouge-iota);
  font-weight: bold;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  border: 1px solid var(--gris-clair);
  border-radius: 99px;
  padding: 7px 14px;
  font-size: 13px;
  color: var(--noir);
}

/* ---------- Table (pricing / comparison) ---------- */

table {
  border-collapse: collapse;
  width: 100%;
}

th, td {
  border: 1px solid var(--gris-tres-clair);
  padding: 12px 14px;
  text-align: left;
  font-size: 14px;
  vertical-align: top;
}

th {
  background: var(--gris-tres-clair);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---------- Price banner ---------- */

.price-banner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  background: var(--noir);
  color: var(--blanc);
  padding: 32px 30px;
  margin-bottom: 40px;
}

.price-banner .price-amount {
  font-size: 34px;
  font-weight: bold;
}

.price-banner .price-label {
  font-size: 13px;
  color: var(--gris-clair);
  letter-spacing: 0.04em;
}

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--gris-tres-clair);
  text-align: center;
  padding: 64px 0;
  border-bottom: 1px solid var(--gris-clair);
}

.cta-band h2 {
  max-width: 620px;
  margin: 0 auto 16px;
}

.cta-band .lede {
  margin: 0 auto 28px;
  text-align: center;
}

.cta-band .hero-actions {
  justify-content: center;
}

.cta-band.is-dark {
  background: var(--noir);
  color: var(--blanc);
}

.cta-band.is-dark h2 {
  color: var(--blanc);
}

.cta-band.is-dark .lede {
  color: var(--gris-clair);
}

.cta-band.is-dark .btn-primary {
  background: var(--rouge-iota);
  border-color: var(--rouge-iota);
  color: var(--blanc);
}

.cta-band.is-dark .btn-primary:hover {
  background: var(--blanc);
  border-color: var(--blanc);
  color: var(--noir);
}

.cta-band.is-dark .btn-secondary {
  background: transparent;
  border-color: var(--blanc);
  color: var(--blanc);
}

.cta-band.is-dark .btn-secondary:hover {
  border-color: var(--rouge-iota);
  color: var(--rouge-iota);
}

.cta-band .band-link {
  display: inline-block;
  margin-top: 22px;
  font-size: 13px;
  font-weight: bold;
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Domain list (editorial, table-derived) ---------- */

.domain-list {
  border-top: 1px solid var(--gris-clair);
}

.domain-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--gris-tres-clair);
}

.domain-row h3 {
  font-size: 17px;
}

.domain-row p {
  color: var(--gris);
  font-size: 15px;
  margin: 0;
  max-width: 620px;
}

@media (max-width: 640px) {
  .domain-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

/* ---------- Founder / about layout ---------- */

.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 800px) {
  .about-layout {
    grid-template-columns: 1fr;
  }
}

/* ---------- Contact form ---------- */

.contact-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 800px) {
  .contact-layout {
    grid-template-columns: 1fr;
  }
}

form.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row label {
  font-size: 12px;
  font-weight: bold;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gris);
}

.form-row input,
.form-row select,
.form-row textarea {
  font: inherit;
  font-size: 15px;
  border: 1px solid var(--gris-clair);
  padding: 12px 14px;
  background: var(--blanc);
  color: var(--noir);
}

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

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--rouge-iota);
}

.form-note {
  font-size: 12.5px;
  color: var(--gris);
}

.form-note a {
  color: var(--rouge-iota);
  font-weight: bold;
}

.form-warning {
  font-size: 13px;
  font-weight: bold;
  color: var(--rouge-iota);
  margin: 0;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 40px 0;
}

.site-footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
}

.footer-brand .brand-logo {
  height: 26px;
}

.footer-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-nav a {
  text-decoration: none;
  font-size: 13px;
  color: var(--gris);
}

.footer-nav a:hover {
  color: var(--rouge-iota);
}

.footer-copy {
  font-size: 12px;
  color: var(--gris);
  width: 100%;
  padding-top: 20px;
  margin-top: 20px;
  border-top: 1px solid var(--gris-tres-clair);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* Review variant: static content, keyboard access and readable mobile layouts. */
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--rouge-iota); outline-offset: 4px; }
.hero-cost :focus-visible, .is-dark :focus-visible { outline-color: var(--blanc); }
.form-row input:focus-visible, .form-row textarea:focus-visible {
  outline: 3px solid var(--rouge-iota);
  outline-offset: 3px;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  transform: translateY(-160%);
  z-index: 100;
  padding: 12px 20px;
  background: var(--blanc);
  color: var(--noir);
}
.skip-link:focus { transform: translateY(0); }
#main-content, #donnees-personnelles { scroll-margin-top: 92px; }
.section-intro { margin-top: 18px; }
.section-link { margin-top: 28px; margin-bottom: 0; font-weight: bold; }
.grid > *, .contact-layout > * { min-width: 0; }
.card, .contact-layout, th, td { overflow-wrap: anywhere; }
.hero-cost { padding: 44px 0 48px; }
.hero-cost h1 { max-width: 980px; font-size: clamp(32px, 4.5vw, 52px); }
.hero-cost .lede { max-width: 760px; font-size: 19px; margin-top: 24px; }
.hero-cost .eyebrow, .cta-band.is-dark .eyebrow { color: var(--accent-on-dark); }
.hero-cost .btn-secondary:hover, .cta-band.is-dark .btn-secondary:hover {
  color: var(--accent-on-dark);
  border-color: var(--accent-on-dark);
}
.cost-example { margin: 26px 0 0; max-width: 760px; min-height: 184px; }
.cost-scenario { color: var(--blanc); font-size: 20px; margin-bottom: 8px; min-height: 1.6em; }
.cost-metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.cost-total { margin-bottom: 12px; line-height: 1.15; }
.cost-total strong { display: block; min-height: 1.15em; font-size: clamp(46px, 7vw, 72px); color: var(--rouge-iota); white-space: nowrap; }
.cost-total span { display: block; font-size: 19px; margin-top: 6px; color: var(--blanc); }
.cost-footnote { width: 100%; margin: 0; font-size: 13px; color: var(--gris-clair); scroll-margin-top: 92px; }
.cost-example .is-typing::after { content: ""; display: inline-block; height: 0.9em; border-right: 2px solid currentColor; margin-left: 3px; vertical-align: -0.1em; }
.cta-band .cost-example { margin: 26px auto; }
.before-after { margin: 18px 0 0; }
.before-after dt { font-size: 13px; font-weight: bold; margin-top: 20px; }
.before-after dd { margin: 6px 0 0; font-size: 15px; color: var(--gris); }
.domain-details { margin-top: 32px; }
summary { cursor: pointer; font-weight: bold; padding: 18px 0; }
.domain-details summary { border-top: 1px solid var(--gris-clair); }
.offer-facts { display: grid; grid-template-columns: 1fr 1fr 1.2fr; gap: 24px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--gris-clair); }
.offer-facts p { margin: 0; }
.offer-facts strong { display: block; font-size: 23px; line-height: 1.25; }
.offer-facts span { display: block; font-size: 14px; color: var(--gris); margin-top: 8px; }
.faq details { border-top: 1px solid var(--gris-clair); }
.faq details p { max-width: 760px; color: var(--gris); padding-bottom: 16px; }
.card .profile-role { color: var(--noir); font-weight: bold; margin-bottom: 10px; }
.card .profile-expertise { color: var(--rouge-iota); margin-bottom: 18px; }
.contact-form fieldset { border: 0; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.field-hint { font-weight: normal; text-transform: none; letter-spacing: normal; }
.contact-notice { padding: 18px; border-left: 3px solid var(--rouge-iota); background: var(--gris-tres-clair); }
.btn:disabled { cursor: not-allowed; background: var(--gris-tres-clair); color: var(--gris); border-color: var(--gris-clair); }
.form-row input, .form-row textarea { font-size: 16px; width: 100%; }
@media (max-width: 640px) {
  .hero-cost { padding: 32px 0 40px; }
  .hero-actions { gap: 12px; }
  .hero-actions .btn { width: 100%; text-align: center; }
  .offer-facts { grid-template-columns: 1fr; gap: 20px; }
  .example-grid { grid-template-columns: 1fr; }
  .card { padding: 22px; }
  .cost-scenario { font-size: 18px; min-height: 3.2em; }
  .cost-metrics { grid-template-columns: 1fr; gap: 16px; }
  .step { grid-template-columns: 42px 1fr; gap: 12px; }
}