/* aipale 共用導航樣式 — 獨立自足，不依賴 page 的 :root 變數 */
:root {
  --aipale-nav-primary: #2B5797;
  --aipale-nav-ink: #1E2938;
  --aipale-nav-bg: #7EB3D8;
  --aipale-nav-ease-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --aipale-nav-ease-quint: cubic-bezier(0.22, 1, 0.36, 1);
  --aipale-nav-font-display: 'Zen Maru Gothic', sans-serif;
}

/* 佔位高度：避免 fetch 注入完成前 Hero 先閃上去（72 + 44 topbar） */
#site-nav-mount { min-height: 116px; display: block; }
#site-nav-mount:empty { min-height: 116px; }

.nav {
  position: fixed; top: 44px; left: 0; right: 0; z-index: 100;
  background: rgba(236, 245, 255, 0.92);
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  border-bottom: 1px solid rgba(26,35,50,0.08);
  transition: all 0.5s var(--aipale-nav-ease-quart);
}
.nav.scrolled {
  background: rgba(236, 245, 255, 0.98);
  box-shadow: 0 4px 30px rgba(30, 41, 56, 0.08);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 32px;
  height: 72px; display: flex; align-items: center; justify-content: space-between;
}
.nav .logo {
  display: inline-flex; align-items: center;
  text-decoration: none; transition: opacity 0.3s;
  font-family: var(--aipale-nav-font-display);
  font-size: unset; font-weight: unset; color: var(--aipale-nav-ink); letter-spacing: normal;
}
.nav .logo:hover { opacity: 0.72; }
.nav .logo img { height: 38px; width: auto; display: block; }
.nav .logo span { display: none; }
.nav-links {
  display: flex; gap: 32px; list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  text-decoration: none; color: rgba(26,35,50,0.72); font-size: 14px;
  font-weight: 500; letter-spacing: 0.5px;
  transition: all 0.25s var(--aipale-nav-ease-quart);
  position: relative; padding: 4px 0;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 2px; background: var(--aipale-nav-primary); transform: scaleX(0);
  transition: transform 0.35s var(--aipale-nav-ease-quint);
  transform-origin: center;
}
.nav-links a:hover,
.nav-links a.active { color: var(--aipale-nav-primary); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }

.nav-cta {
  background: #E7F1A8; color: var(--aipale-nav-ink); padding: 10px 24px; border-radius: 8px;
  font-size: 13px; font-weight: 600; text-decoration: none;
  transition: all 0.3s var(--aipale-nav-ease-quart); letter-spacing: 0.5px;
  box-shadow: 0 2px 8px rgba(163,183,81,0.25);
}
.nav-cta:hover {
  background: #DCE893; transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(163,183,81,0.35);
}
.nav-cta:active { transform: translateY(0) scale(0.98); }

.mobile-menu { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.mobile-menu svg { stroke: rgba(26,35,50,0.8); }

.mobile-nav {
  position: fixed; top: 0; right: 0; bottom: 0; width: 280px; z-index: 200;
  background: rgba(30,41,56,0.97);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  transform: translateX(100%); transition: transform 0.5s var(--aipale-nav-ease-quint);
  padding: 80px 32px 32px; display: flex; flex-direction: column; gap: 8px;
}
.mobile-nav.open { transform: translateX(0); }
.mobile-nav a {
  text-decoration: none; color: rgba(255,255,255,0.85); font-size: 18px;
  font-weight: 500; padding: 16px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: all 0.3s; display: block;
}
.mobile-nav a:hover { color: var(--aipale-nav-bg); padding-left: 8px; }
.mobile-nav-close {
  position: absolute; top: 20px; right: 20px; background: none; border: none;
  cursor: pointer; padding: 8px; color: rgba(255,255,255,0.6);
  transition: color 0.2s;
}
.mobile-nav-close:hover { color: #fff; }
.mobile-overlay {
  position: fixed; inset: 0; background: rgba(26,35,50,0.5); z-index: 199;
  opacity: 0; pointer-events: none; transition: opacity 0.4s;
}
.mobile-overlay.open { opacity: 1; pointer-events: all; }

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .mobile-menu { display: block; }
}