.header {
  display: flex;
  align-items: center;
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}
.header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  text-decoration: none;
}
.header__logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: radial-gradient(circle at 20% 0, rgba(17, 80, 201, 0.55), transparent 60%), #101935;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}
.header__logo-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background-color: #ffffff;
}
.header__brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.header__brand-name {
  font-family: var(--font-serif);
  font-size: var(--font-size-lg);
  letter-spacing: -0.03em;
  color: var(--color-text);
}
.header__brand-tagline {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}
.header__nav {
  margin-left: auto;
}
.nav-menu {
  align-items: center;
}
.nav-link {
  position: relative;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1.5px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-strong));
  transition: width var(--transition-base);
}
.nav-link:hover::after,
.nav-link--active::after {
  width: 100%;
}
.nav-link--cta {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(17, 80, 201, 0.32);
  background-color: rgba(17, 80, 201, 0.06);
  color: var(--color-text);
}
.nav-link--cta::after {
  display: none;
}
.nav-link--cta:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}
@media (max-width: 768px) {
  .header__nav {
    position: fixed;
    inset: var(--header-height) 0 auto 0;
    background-color: rgba(245, 247, 251, 0.98);
    border-bottom: 1px solid var(--color-border-subtle);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base);
  }
  .header__nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-menu {
    padding: var(--space-12) var(--space-16) var(--space-16);
  }
  .nav-link {
    padding: 10px 0;
    font-size: var(--font-size-sm);
  }
  .nav-link--cta {
    margin-top: var(--space-8);
    justify-content: center;
  }
}
@media (min-width: 769px) {
  .nav-toggle {
    display: none;
  }
}