:root {
  --navy: #071640;
  --blue: #1f5fbf;
  --text: #1f2937;
  --muted: #5f6876;
  --line: #d7dce3;
  --bg: #f7f8fb;
  --white: #ffffff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}
a { color: inherit; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.narrow { max-width: 760px; }
.site-header {
  background: rgba(255,255,255,.92);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; backdrop-filter: blur(12px); z-index: 5;
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 24px; }
.brand { text-decoration: none; display: grid; gap: 2px; }
.brand-name { color: var(--navy); font-weight: 800; font-size: 1.15rem; }
.brand-tagline { color: var(--muted); font-size: .88rem; font-style: italic; }
nav { display: flex; gap: 22px; font-weight: 700; color: var(--navy); }
nav a { text-decoration: none; font-size: .95rem; }
.hero {
  padding: 90px 0 74px;
  background: radial-gradient(circle at top right, rgba(31,95,191,.13), transparent 40%), linear-gradient(135deg, #ffffff, #f3f6fb);
}
.hero-grid { display: grid; grid-template-columns: 1.45fr .9fr; gap: 50px; align-items: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .13em; font-size: .78rem; font-weight: 800; color: var(--blue); margin: 0 0 16px; }
h1 { color: var(--navy); font-size: clamp(2.6rem, 6vw, 5.4rem); line-height: .98; letter-spacing: -.04em; margin: 0 0 24px; }
.lead { color: var(--muted); font-size: clamp(1.1rem, 2.1vw, 1.35rem); line-height: 1.55; max-width: 720px; margin: 0 0 30px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.button { padding: 13px 20px; border-radius: 999px; text-decoration: none; font-weight: 800; border: 1px solid var(--line); }
.primary { background: var(--navy); color: white; border-color: var(--navy); }
.secondary { background: white; color: var(--navy); }
.signature-card {
  background: white; border: 1px solid var(--line); border-radius: 24px; padding: 30px;
  box-shadow: 0 18px 50px rgba(7,22,64,.10); display: flex; gap: 22px; align-items: center;
}
.acte-logo { width: 100px; height: auto; flex: 0 0 auto; }
.signature-card h2 { color: var(--navy); margin: 0 0 6px; font-size: 1.55rem; }
.signature-card p { margin: 0 0 14px; color: var(--muted); font-style: italic; }
.social-icons { display: flex; gap: 12px; }
.social-icons img { width: 28px; height: 28px; object-fit: contain; }
.section { padding: 70px 0; }
.section.alt { background: white; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 { color: var(--navy); font-size: clamp(1.8rem, 3vw, 2.6rem); margin: 0 0 22px; letter-spacing: -.025em; }
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.card { background: white; border: 1px solid var(--line); border-radius: 18px; padding: 22px; }
.card h3 { color: var(--navy); margin: 0 0 10px; }
.card p, .section p { color: var(--muted); line-height: 1.65; }
.social-links { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 22px; }
.social-links a { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 999px; padding: 10px 14px; text-decoration: none; background: white; font-weight: 800; color: var(--navy); }
.social-links img { width: 22px; height: 22px; object-fit: contain; }
footer { padding: 30px 0; color: var(--muted); font-size: .92rem; }
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr 1fr; }
  .nav-wrap { align-items: flex-start; flex-direction: column; padding: 18px 0; }
  nav { gap: 16px; }
}
@media (max-width: 560px) {
  .cards { grid-template-columns: 1fr; }
  .signature-card { align-items: flex-start; flex-direction: column; }
  nav { flex-wrap: wrap; }
}