:root {
  --primary: #004aad;
  --accent: #e53935;
  --muted: #777;
  --bg: #fafafa;
  --card-bg: #ffffff;
  --max-width: 1200px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  font-family: "Roboto", sans-serif;
  background: var(--bg);
  color: #222;
}

.section {
  max-width: var(--max-width);
  margin: 40px auto;
  padding: 40px 24px;
}

/* En-tête */
.advantages-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 24px;
  border-bottom: 1px solid #e6e6e6;
  padding-bottom: 18px;
  margin-bottom: 32px;
}

.tag {
  padding: 8px 18px;
  border: 1px solid #dfe6ef;
  border-radius: 28px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  background: #fff;
  white-space: nowrap;
}

.big-title {
  flex: 1 1 600px;
  min-width: 260px;
}

.big-title h1 {
  margin: 0;
  font-family: "Montserrat", sans-serif;
  font-weight: 800;
  font-size: 40px;
  line-height: 1.05;
  color: #111;
  letter-spacing: -1px;
}

.big-title .accent {
  color: var(--primary);
}

/* Grille des avantages */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.feature {
  background: var(--card-bg);
  padding: 28px 20px;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 6px 18px rgba(15, 30, 50, 0.04);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.feature:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(15, 30, 50, 0.1);
}

.icon {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(0,74,173,0.1), rgba(0,74,173,0.04));
  color: var(--primary);
}

.feature h3 {
  margin: 0;
  font-size: 18px;
  color: var(--accent);
  font-weight: 700;
  font-family: "Montserrat", sans-serif;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

/* Responsive */
@media (max-width: 1100px) {
  .features {
    grid-template-columns: repeat(2, 1fr);
  }
  .big-title h1 {
    font-size: 36px;
  }
}

@media (max-width: 640px) {
  .features {
    grid-template-columns: 1fr;
  }
  .big-title h1 {
    font-size: 28px;
  }
  .section {
    padding: 24px;
  }
}