/* 页头容器、站名和行高保持一致，内容出现滚动条时不改变页头位置。 */
html { scrollbar-gutter: stable; }
@supports not (scrollbar-gutter: stable) { html { overflow-y: scroll; } }
body > .page,
body > main.shell {
  box-sizing: border-box;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 34px 22px 64px;
}
:is(.platform-header,.site-header) {
  box-sizing: border-box;
  position: relative;
  top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: 51px;
  margin: 0 0 26px;
  padding: 0;
  border: 0;
  background: transparent;
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  line-height: normal;
}
body > header.platform-header {
  width: 100%;
  max-width: 1180px;
  min-height: 85px;
  margin: 0 auto 26px;
  padding: 34px 22px 0;
}
body > main.wrap { padding-top: 0; }
body > main.wrap > .module-heading { margin-top: 0; }
:is(.platform-header,.site-header) > .brand {
  flex: 0 0 auto;
  margin: 0;
  padding: 0;
}
:is(.platform-header,.site-header) > .brand > small {
  display: block;
  height: 14px;
  margin: 0;
  padding: 0;
  color: #176da8;
  font-size: 11px;
  font-weight: 800;
  line-height: 14px;
  letter-spacing: .16em;
}
:is(.platform-header,.site-header) > .brand > strong {
  display: block;
  height: 32px;
  margin: 5px 0 0;
  padding: 0;
  color: #123b57;
  font-size: 26px;
  font-weight: 700;
  line-height: 32px;
  letter-spacing: -.03em;
}
/* 全站页头导航：平台、管理员中心、报表、端口和光缆共用。 */
:is(.platform-header .platform-nav, .site-header .primarynav) {
  box-sizing: border-box;
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  flex-wrap: nowrap;
  gap: 4px;
  max-width: 100%;
  margin: 0;
  padding: 5px;
  border: 1px solid rgba(176,198,213,.72);
  border-radius: 14px;
  background: rgba(255,255,255,.82);
  box-shadow: 0 8px 25px rgba(16,42,67,.06);
  overflow-x: auto;
}
:is(.platform-header .platform-nav, .site-header .primarynav) > :is(a,button) {
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  height: 38px;
  min-height: 38px;
  margin: 0;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  font-size: 13px;
  font-weight: 750;
  line-height: 20px;
  letter-spacing: normal;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  color: #4c6273;
  background: transparent;
  box-shadow: none;
  cursor: pointer;
  transform: none;
  transition: color .15s ease, background-color .15s ease;
}
:is(.platform-header .platform-nav, .site-header .primarynav) > :is(a,button):hover {
  color: #176da8;
  background: #edf6fb;
}
:is(.platform-header .platform-nav, .site-header .primarynav) > .active {
  color: #fff;
  background: linear-gradient(135deg,#176da8,#1595b9);
  box-shadow: none;
}
:is(.platform-header .platform-nav, .site-header .primarynav) > button,
.site-header .primarynav > [data-platform-logout] {
  color: #38576b;
  background: #edf4f7;
}
:is(.platform-header .platform-nav, .site-header .primarynav).hidden,
:is(.platform-header .platform-nav, .site-header .primarynav)[hidden],
:is(.platform-header .platform-nav, .site-header .primarynav) > .hidden,
:is(.platform-header .platform-nav, .site-header .primarynav) > [hidden] {
  display: none !important;
}
@media (max-width: 900px) {
  body > .page,
  body > main.shell { padding: 26px 14px 45px; }
  body > header.platform-header { padding: 26px 14px 0; }
  :is(header.platform-header,.site-header) {
    align-items: flex-start;
    flex-direction: column;
  }
  :is(.platform-header .platform-nav, .site-header .primarynav) {
    width: 100%;
  }
}