/* 全站共用導覽列樣式：首頁（index.css）與所有案例／模板頁（shared/styles.css）都載入這份檔案，
   確保導覽列的尺寸、字級與響應式斷點只有一份定義來源。 */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 72px;
  padding: 0 5vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--muted);
  font-size: 13px;
}

.nav-links a {
  transition: color 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--blue);
}

@media (max-width: 640px) {
  .nav {
    height: 60px;
    padding-inline: 16px;
  }

  .brand {
    flex-shrink: 0;
    white-space: nowrap;
    font-size: 12px;
    letter-spacing: 0.06em;
  }

  .nav-links {
    flex-shrink: 0;
    gap: 12px;
    font-size: 11px;
    white-space: nowrap;
  }
}