.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: #fff;
  border-bottom: 1px solid var(--color-border);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-4);
}

.site-nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.site-nav__logo-mark { height: 28px; width: auto; }

.site-nav__logo-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.site-nav__logo-name {
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.site-nav__logo-by {
  font-size: 10px;
  font-weight: 500;
  color: var(--color-text-muted);
  line-height: 1;
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.site-nav__links a {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color 0.15s ease, background 0.15s ease;
}

.site-nav__links a:hover,
.site-nav__links a[aria-current="page"] {
  color: var(--color-text-primary);
  background: var(--color-surface);
}

.site-nav__sep {
  width: 1px;
  height: 16px;
  background: var(--color-border);
  flex-shrink: 0;
}

.site-nav__link--muted {
  font-size: var(--text-sm) !important;
  color: var(--color-text-muted) !important;
}
.site-nav__link--muted:hover {
  color: var(--color-text-secondary) !important;
  background: none !important;
}

.site-nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
}

.site-nav__hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-nav__mobile {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) 0;
  z-index: 99;
}

.site-nav__mobile.is-open { display: block; }

.site-nav__mobile a {
  display: block;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: var(--space-3) var(--space-6);
  transition: color 0.15s ease;
}

.site-nav__mobile a:hover { color: var(--color-accent); }

.site-nav__mobile .btn {
  margin: var(--space-4) var(--space-6) 0;
  width: calc(100% - var(--space-12));
  justify-content: center;
}

.site-nav__mobile a.btn--gradient { color: #fff; }

@media (max-width: 860px) {
  .site-nav__links,
  .site-nav__actions {
    display: none;
  }
  .site-nav__hamburger { display: flex; }
}