/* 全站统一顶栏（芯易驻 | 工作台 | 首页 | 订阅 | 隐私 | 协议 | 芯造科技） */
.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 48px;
  background: #fff;
  border-bottom: 1px solid #eee;
  position: sticky;
  top: 0;
  z-index: 100;
  flex-shrink: 0;
  min-height: 53px;
  box-sizing: border-box;
}
.site-nav-left {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.site-nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
  color: #15803d;
  margin-right: 4px;
  user-select: none;
  cursor: default;
  line-height: 1.4;
}
.site-nav-logo-img {
  width: 56px;
  height: 56px;
  border-radius: 0;
  object-fit: contain;
  background: transparent;
  flex-shrink: 0;
}
.site-nav-user-name {
  font-size: 14px;
  font-weight: 500;
  color: #333;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.4;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.site-nav-vip-badge {
  display: none;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(145deg, #fcd34d, #d97706);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  flex-shrink: 0;
  box-shadow: 0 1px 4px rgba(217, 119, 6, 0.35);
  line-height: 1;
}
.site-nav-vip-badge.show { display: inline-flex; }
.site-nav-acct-head .plan .expire {
  display: block;
  font-size: 11px;
  color: #666;
  margin-top: 3px;
  font-weight: 400;
}
.site-nav-acct-head .plan .expire-warn {
  display: block;
  font-size: 11px;
  color: #ea580c;
  margin-top: 3px;
  font-weight: 600;
}
.site-nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.site-nav-link {
  text-decoration: none;
  color: #666;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  line-height: 1.4;
}
.site-nav-link:hover { color: #16a34a; }
.site-nav-link.active {
  font-weight: 700;
  color: #15803d;
}
/* 外链：跳转芯造科技总官网，样式略区分 */
.site-nav-ext {
  margin-left: 4px;
  padding-left: 16px;
  border-left: 1px solid #e8e8e8;
  color: #888;
  font-weight: 500;
}
.site-nav-ext:hover { color: #16a34a; }
.site-nav-ext::after {
  content: " ↗";
  font-size: 11px;
  color: #bbb;
}
.site-nav-btn {
  padding: 7px 14px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: background .15s;
  display: inline-block;
  text-align: center;
  text-decoration: none;
  line-height: 1.4;
  white-space: nowrap;
}
.site-nav-btn-primary { background: #16a34a; color: #fff; }
.site-nav-btn-primary:hover { background: #15803d; color: #fff; }
.site-nav-btn-outline { background: #fff; color: #16a34a; border: 1.5px solid #16a34a; }
.site-nav-btn-outline:hover { background: #ecfdf5; }
/* 账号菜单（与左侧导航同高对齐，不用大按钮） */
.site-nav-account-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.site-nav-account-btn {
  color: #444;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
  line-height: 1.4;
  padding: 0;
  background: none;
  border: none;
  white-space: nowrap;
}
.site-nav-account-btn:hover { color: #16a34a; }
.site-nav-account-btn .caret {
  font-size: 11px;
  color: #888;
  font-weight: 400;
}
.site-nav-account-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  background: #fff;
  border: 1.5px solid #e2e8f0;
  border-radius: 10px;
  box-shadow: 0 8px 28px rgba(0,0,0,.12);
  min-width: 220px;
  z-index: 300;
  overflow: hidden;
}
.site-nav-account-dropdown.open { display: block; }
.site-nav-acct-head {
  padding: 12px 14px;
  background: #f8fafc;
  border-bottom: 1px solid #eee;
}
.site-nav-acct-head .label { font-size: 11px; color: #888; margin-bottom: 4px; }
.site-nav-acct-head .phone { font-size: 14px; font-weight: 600; color: #222; }
.site-nav-acct-head .plan { font-size: 12px; color: #16a34a; margin-top: 4px; }
.site-nav-acct-item {
  display: block;
  padding: 9px 14px;
  font-size: 13px;
  color: #333;
  text-decoration: none;
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  box-sizing: border-box;
}
.site-nav-acct-item:hover { background: #f8fafc; }
.site-nav-acct-item.primary { color: #16a34a; }
.site-nav-acct-item.danger { color: #dc2626; }
.site-nav-acct-divider { border-top: 1px solid #eee; }
@media (max-width: 720px) {
  .site-nav { padding: 14px 20px; }
  .site-nav-left { gap: 12px; }
  .site-nav-link, .site-nav-account-btn { font-size: 13px; }
  .site-nav-btn { padding: 6px 10px; font-size: 13px; }
}