/**
 * CN/network + CN/partner 统一二级导航
 */
:root {
  --eco-subnav-h: 42px;
  --eco-shell-max: 80rem;
  --eco-shell-pad: 1rem;
}

@media (min-width: 768px) {
  :root { --eco-shell-pad: 1.5rem; }
}
@media (min-width: 1024px) {
  :root { --eco-shell-pad: 2rem; }
}

.eco-subnav {
  position: fixed;
  top: 55px;
  left: 0;
  right: 0;
  z-index: 45;
  background: linear-gradient(90deg, #047857, #10b981);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}

.eco-subnav-inner {
  max-width: var(--eco-shell-max);
  margin: 0 auto;
  display: none;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: nowrap;
  gap: 0.2rem;
  padding: 0.45rem var(--eco-shell-pad);
  overflow-x: auto;
  scrollbar-width: none;
  box-sizing: border-box;
  width: 100%;
}

.eco-subnav-inner::-webkit-scrollbar { display: none; }

.eco-subnav-link {
  flex-shrink: 0;
  padding: 0.4rem 0.75rem;
  border-radius: 0.5rem;
  color: rgba(255, 255, 255, 0.95);
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s;
}

.eco-subnav-link:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
}

.eco-subnav-link.is-active {
  background: rgba(255, 255, 255, 0.24);
  font-weight: 600;
}

.eco-subnav-mobile {
  display: block;
  padding: 0.4rem var(--eco-shell-pad);
  max-width: var(--eco-shell-max);
  margin: 0 auto;
  box-sizing: border-box;
  width: 100%;
}

.eco-subnav-select {
  width: 100%;
  padding: 0.45rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 16px;
}

@media (min-width: 768px) {
  .eco-subnav-inner { display: flex; }
  .eco-subnav-mobile { display: none; }
}

body.network-page {
  padding-top: calc(55px + var(--eco-subnav-h)) !important;
}

body.partner-page {
  --eco-shell-max: var(--partner-shell-max, 80rem);
  --eco-shell-pad: var(--partner-shell-pad, 1rem);
}

body.partner-page .eco-subnav {
  top: var(--partner-header-h, 55px);
}

body.biz-page .eco-subnav {
  top: var(--partner-header-h, 55px);
}