/* ============================================================
 * CdrPei 全站统一导航样式（主站）
 * 与 _shared/nav.js 配套：nav.js 生成结构，本文件统一视觉
 * 在所有主站页面 </head> 前引入（置于内嵌 <style> 之后以覆盖）
 * ============================================================ */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(18, 21, 28, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center; gap: 22px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  color: var(--on-dark); font-weight: 700; font-size: 18px;
  text-decoration: none; letter-spacing: 0.02em;
  white-space: nowrap;
}
.nav-logo .dot {
  width: 26px; height: 26px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #ff8c42);
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px; font-weight: 700;
}
.nav-links { display: flex; gap: 18px; margin-left: auto; }
.nav-links a {
  color: var(--on-dark-muted); text-decoration: none; font-size: 14px;
  transition: color 0.2s; white-space: nowrap;
}
.nav-links a:hover { color: var(--on-dark); }
.nav-links a.active { color: var(--on-dark); font-weight: 700; }
.nav-ai {
  background: linear-gradient(135deg, #ffd60a, #ffc300);
  color: #161a22; font-weight: 700;
  padding: 6px 16px; border-radius: 999px;
  box-shadow: 0 4px 14px rgba(255, 199, 0, 0.45);
  transition: transform 0.2s, box-shadow 0.2s, color 0.2s;
}
.nav-ai:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(255, 199, 0, 0.6); color: #161a22; }
.nav-cta {
  background: linear-gradient(135deg, var(--accent), #ff7a1a);
  color: #fff; text-decoration: none; font-size: 14px; font-weight: 700;
  padding: 8px 18px; border-radius: 999px;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 6px 18px rgba(232, 89, 12, 0.35);
  white-space: nowrap;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(232, 89, 12, 0.45); }
@media (max-width: 760px) {
  .nav-inner { gap: 12px; padding: 0 14px; }
  .nav-links { gap: 10px; }
  .nav-links a { font-size: 13px; }
}