/* ===== rushui 全局导航栏 v2 (fixed) ===== */
.r-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 52px;
  background: #fff;
  border-bottom: 1px solid #eee;
  display: flex;
  align-items: center;
  padding: 0 32px;
  gap: 32px;
  z-index: 10000;
  font-family: -apple-system, BlinkMacSystemFont, PingFang SC, Microsoft YaHei, sans-serif;
}
.r-nav-logo { font-size: 15px; font-weight: 600; color: #1a1a1a; text-decoration: none; letter-spacing: -0.3px; }
.r-nav-logo span { font-weight: 400; color: #aaa; font-size: 13px; margin-left: 6px; }
.r-nav-links { display: flex; gap: 24px; align-items: center; margin-left: auto; }
.r-nav-links a { font-size: 13px; color: #888; text-decoration: none; padding: 4px 0; border-bottom: 2px solid transparent; transition: color 0.15s, border-color 0.15s; }
.r-nav-links a:hover { color: #1a1a1a; }
.r-nav-links a.active { color: #1a1a1a; border-bottom-color: #1a1a1a; }
.r-nav-links a.disabled { color: #ccc; pointer-events: none; }

/* ===== r-nav 下拉菜单 ===== */
.r-nav-item { position: relative; }
.r-nav-item > a { cursor: pointer; }
.r-nav-item > a::after {
  content: '';
  display: inline-block;
  width: 0; height: 0;
  border-left: 3px solid transparent;
  border-right: 3px solid transparent;
  border-top: 4px solid currentColor;
  margin-left: 4px; vertical-align: middle;
}
.r-nav-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border: 1px solid #eee;
  border-radius: 10px;
  box-shadow: 0 8px 28px rgba(0,0,0,0.12);
  min-width: 160px;
  z-index: 10001;
  overflow: hidden;
  padding: 6px 0;
}
.r-nav-dropdown.show { display: block; }
.r-nav-dropdown a {
  display: block !important;
  padding: 9px 18px !important;
  font-size: 13px !important;
  color: #555 !important;
  border-bottom: none !important;
  white-space: nowrap;
  border-radius: 0 !important;
}
.r-nav-dropdown a:hover { background: #f7f7f7; color: #1a1a1a !important; }