/* Concept : mise en page éditoriale asymétrique, titre à gauche et contenu à droite, ton calme. */
:root {
  --bg: #F1F4F2;
  --surface: #E4ECE9;
  --fg: #18282A;
  --muted: #51656A;
  --accent: #2D6A68;
  --accent-fg: #FFFFFF;
  --line: #C6D4D0;
  --font-display: "Newsreader", Georgia, "Times New Roman", serif;
  --font-body: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0E1718;
    --surface: #15252A;
    --fg: #E5EEEC;
    --muted: #9DB3B0;
    --accent: #7CC8C0;
    --accent-fg: #0E1718;
    --line: #28393C;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 1.0625rem/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
.wrap {
  max-width: 1120px;
  margin-inline: auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
a { color: inherit; }
a.link { color: var(--accent); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
p { margin: 0 0 1em; max-width: 62ch; }
h1, h2, h3 { font-family: var(--font-display); text-wrap: balance; }

/* En-tête */
.top {
  position: sticky;
  top: 0;
  z-index: 11;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.top .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 28px;
  padding-block: 14px;
}
.brand { text-decoration: none; min-width: 0; }
.brand strong {
  display: block;
  font: 500 1.3rem/1.1 var(--font-display);
}
.brand > span {
  display: block;
  margin-top: 4px;
  font: 600 .68rem/1 var(--font-body);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}
.nav {
  display: flex;
  gap: 2px 22px;
  min-width: 0;
  max-width: 100%;
  overflow-x: auto;
}
.nav a {
  white-space: nowrap;
  padding: 6px 0;
  font-size: .95rem;
  color: var(--muted);
  text-decoration: none;
  transition: color .15s;
}
.nav a:hover { color: var(--fg); }
.lang {
  display: inline-flex;
  flex: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
.lang a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  min-height: 40px;
  padding: 0 12px;
  color: var(--muted);
  font: 600 .8rem var(--font-body);
  letter-spacing: .08em;
  text-decoration: none;
}
.lang a:hover { color: var(--fg); }
.lang a[aria-current="true"] { background: var(--accent); color: var(--accent-fg); }
.lang a:focus-visible { outline-offset: -3px; }

section[id] { scroll-margin-top: 120px; }

/* Accueil */
.hero { padding-block: clamp(40px, 8vw, 96px) clamp(48px, 8vw, 88px); }
.hero .wrap > div { max-width: 820px; }
.eyebrow {
  margin: 0 0 18px;
  font: 600 .75rem/1.3 var(--font-body);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
}
.hero h1 {
  margin: 0 0 32px;
  font-weight: 300;
  font-size: clamp(2.5rem, 6.4vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -.015em;
}
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 6px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-fg);
  font-weight: 600;
  text-decoration: none;
  transition: opacity .15s;
}
.btn:hover { opacity: .9; }
.btn.ghost { background: transparent; color: var(--fg); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--accent); opacity: 1; }
.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 44px;
  margin: 44px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--line);
}
.facts dt { font: 400 1.55rem/1.1 var(--font-display); }
.facts dd { margin: 4px 0 0; font-size: .9rem; color: var(--muted); }

/* Sections */
.sec { padding-block: clamp(56px, 9vw, 104px); }
.sec.alt { background: var(--surface); }
.split {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.6fr);
  gap: 32px clamp(32px, 6vw, 88px);
}
.split > * { min-width: 0; }
h2 {
  margin: 0;
  font-weight: 400;
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  line-height: 1.12;
  letter-spacing: -.01em;
}
h3 { margin: 0 0 6px; font-weight: 500; font-size: 1.35rem; line-height: 1.2; }
.lead { font-size: 1.2rem; }
.muted { color: var(--muted); }

.themes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 40px;
}
.themes li {
  padding-block: 18px;
  border-top: 1px solid var(--line);
  font: 400 1.3rem/1.25 var(--font-display);
}

.meta { margin: 32px 0 0; }
.meta dt {
  font: 600 .72rem/1.3 var(--font-body);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.meta dd { margin: 4px 0 22px; max-width: 58ch; }

.steps { list-style: none; counter-reset: s; margin: 0; padding: 0; }
.steps li {
  counter-increment: s;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 0 16px;
  padding-block: 24px;
  border-top: 1px solid var(--line);
}
.steps li::before {
  content: counter(s);
  font: 300 2.4rem/1 var(--font-display);
  color: var(--accent);
}
.steps p { margin: 0; color: var(--muted); }
.steps p + p { margin-top: .6em; }

.rows { margin: 0; }
.rows > div {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 28px;
  padding-block: 18px;
  border-top: 1px solid var(--line);
}
.rows > div:last-child { border-bottom: 1px solid var(--line); }
.rows dt { font-weight: 600; }
.rows dd { margin: 0; min-width: 0; color: var(--muted); text-align: right; max-width: 38ch; }
.rows dd.price { font: 400 1.35rem/1.2 var(--font-display); color: var(--fg); }

.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-block: 20px;
  font-weight: 500;
  font-size: 1.08rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  flex: none;
  font: 300 1.7rem/1 var(--font-display);
  color: var(--accent);
}
.faq details[open] summary::after { content: "\2013"; }
.faq details p { margin: 0 0 22px; color: var(--muted); }

.contact-list { margin-top: 32px; }
.contact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 16px;
  align-items: center;
  padding-block: 18px;
  border-top: 1px solid var(--line);
}
.contact-row:last-child { border-bottom: 1px solid var(--line); }
.contact-row small {
  display: block;
  font: 600 .72rem/1.3 var(--font-body);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-row .val { display: block; margin-top: 4px; font-size: 1.1rem; overflow-wrap: anywhere; }
.copy {
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: transparent;
  color: var(--fg);
  font: 500 .85rem var(--font-body);
  cursor: pointer;
  transition: border-color .15s;
}
.copy:hover { border-color: var(--accent); }
.alert {
  margin-top: 40px;
  padding: 24px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
}
.alert h3 { font-size: 1.25rem; }
.alert p { margin: 0 0 .6em; }
.alert p:last-child { margin-bottom: 0; }

footer { padding-block: 32px; font-size: .9rem; color: var(--muted); }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 32px; }
footer .areas { flex-basis: 100%; }

@media (max-width: 820px) {
  .split { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 760px) {
  .lang { order: 2; }
  .nav { order: 3; flex-basis: 100%; }
}
@media (max-width: 600px) {
  .themes { grid-template-columns: minmax(0, 1fr); }
  .rows dd { text-align: left; max-width: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}