:root {
  --bg: #f7f8f5;
  --surface: #ffffff;
  --ink: #1c2833;
  --ink-muted: #556575;
  --brand: #1b5e7a;
  --line: #dde5e8;
}

.site-nav {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 0.85rem 10%;
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(247, 248, 245, 0.95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
  font-family: "Manrope", "Segoe UI", sans-serif;
}

.nav-links {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink-muted);
  font-size: 0.92rem;
  padding: 0.16rem 0.44rem;
  border-radius: 999px;
  transition: color 0.2s, background-color 0.2s;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--brand);
  background: #eaf1f4;
}

@media (max-width: 768px) {
  .site-nav {
    padding: 0.85rem 5%;
  }
}

@media (max-width: 640px) {
  .site-nav {
    justify-content: flex-start;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 0.72rem 5% 0.36rem;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .nav-links {
    gap: 0.4rem;
    flex-wrap: nowrap;
    white-space: nowrap;
    min-width: max-content;
  }

  .nav-links a {
    font-size: 0.86rem;
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0.2rem 0.55rem;
  }
}