:root {
  --ink: #14171c;
  --ink-soft: #4a5260;
  --line: #e2e5ea;
  --paper: #ffffff;
  --paper-alt: #f6f7f9;
  --accent: #1f4e79;
  --accent-soft: #eaf0f6;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  z-index: 10;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  flex-wrap: wrap;
}

.brand {
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--ink);
  font-size: 1.05rem;
}

.brand span {
  color: var(--accent);
}

nav a {
  color: var(--ink-soft);
  text-decoration: none;
  margin-left: 22px;
  font-size: 0.95rem;
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--accent);
}

nav a:first-child { margin-left: 0; }

/* Hero */
.hero {
  padding: 88px 0 64px;
  border-bottom: 1px solid var(--line);
}

.hero p.kicker {
  margin: 0 0 18px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  max-width: 18ch;
}

.hero .lede {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 62ch;
  margin: 0 0 32px;
}

/* Sections */
section { padding: 64px 0; }

section + section { border-top: 1px solid var(--line); }

h2 {
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  letter-spacing: -0.015em;
  margin: 0 0 12px;
}

h3 {
  font-size: 1.08rem;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

p { margin: 0 0 16px; max-width: 68ch; }

.muted { color: var(--ink-soft); }

.grid {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 32px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 26px;
  background: var(--paper);
}

.card p:last-child { margin-bottom: 0; }

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

.list li {
  padding: 14px 0;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  max-width: 68ch;
}

.list li:first-child { border-top: 0; }

.list strong { color: var(--ink); font-weight: 600; }

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

/* Call to action */
.cta {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 13px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.98rem;
}

.cta:hover { background: #17395a; }

a { color: var(--accent); }

/* Definition table (mentions légales, contact) */
.pairs {
  border-top: 1px solid var(--line);
  margin: 24px 0 0;
  max-width: 68ch;
}

.pairs div {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.pairs dt {
  color: var(--ink-soft);
  font-size: 0.93rem;
}

.pairs dd { margin: 0; }

.todo {
  background: #fff3cd;
  border-bottom: 2px solid #e0a800;
  padding: 0 4px;
}

/* Footer */
footer {
  border-top: 1px solid var(--line);
  padding: 40px 0 56px;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

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

footer a { color: var(--ink-soft); }

@media (max-width: 620px) {
  .hero { padding: 56px 0 44px; }
  section { padding: 48px 0; }
  .pairs div { grid-template-columns: 1fr; gap: 4px; }
  .site-header .wrap { min-height: 64px; padding-top: 12px; padding-bottom: 12px; }
}