Header desktop

<style>
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

.bn-header {
  --bn-nav-accent: #E6E4DD;

  display: flex;
  align-items: center;
  justify-content: space-between;

  padding: 1.25rem 2.5rem;
  font-family: 'Inter', sans-serif;

  background: #0B0F10;
  border-bottom: 1px solid rgba(230, 228, 221, 0.1);
}

.bn-header__logo {
  color: #E6E4DD;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  font-size: 0.95rem;
}

.bn-header__nav {
  display: flex;
  gap: 2.25rem;
}

.bn-header__link {
  position: relative;
  color: #C7C1B7;
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-bottom: 0.3rem;
  transition: color 0.2s ease;
}

.bn-header__link:hover {
  color: #E6E4DD;
}

/* Petit point sous le lien actif, dans la couleur d'accent */
.bn-header__link.is-active {
  color: #E6E4DD;
}

.bn-header__link.is-active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -2px;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--bn-nav-accent);
}

.bn-header__icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(230, 228, 221, 0.2);
  background: none;
  color: #E6E4DD;
  cursor: pointer;
  font-size: 0.9rem;
}

.bn-header__icon:hover {
  border-color: var(--bn-nav-accent);
  color: var(--bn-nav-accent);
}

</style>

<header class="bn-header" data-fx-root>
  <a href="#" class="bn-header__logo">BN</a>

  <nav class="bn-header__nav">
    <a href="#" class="bn-header__link">À propos</a>
    <a href="#" class="bn-header__link is-active">Projets</a>
    <a href="#" class="bn-header__link">Réflexions</a>
    <a href="#" class="bn-header__link">Contact</a>
  </nav>

  <button class="bn-header__icon" type="button" aria-label="Rechercher">◎</button>
</header>