/* 所有公开页面共用静态导航；产品入口保留在原始 HTML 中，不依赖脚本注入。 */
html { scroll-padding-top: 96px; }

.site-navigation-header .site-navigation-layout {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 68px;
  min-height: 68px;
  padding: 0;
}

@media (min-width: 861px) {
  .site-navigation-header .site-navigation-layout {
    width: min(1140px, calc(100% - 48px));
    margin: 0 auto;
  }
}

/* 主导航与快捷入口共用一个面板：桌面端摊平后与品牌同行，窄屏整体作为可折叠抽屉。 */
.site-navigation-panel {
  display: flex;
  flex: 1 1 auto;
  min-width: 0;
  align-items: center;
  gap: 20px;
}

.site-navigation-panel > .site-navigation,
.site-navigation-panel > .header-actions,
.site-navigation-panel > .nav-actions { margin-left: auto; }

/* 汉堡开关只在窄屏由脚本接管后出现。 */
.site-navigation-toggle { display: none; }

.site-navigation {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  border: 1px solid #dde1eb;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 6px 18px rgba(23, 26, 36, .04);
}

.site-navigation > a,
.site-navigation-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 6px 18px;
  border: 0;
  border-radius: 999px;
  color: #596075;
  background: transparent;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}

.site-navigation > a[aria-current="page"],
.site-navigation-trigger.is-active {
  background: #e8eeff;
  color: #155dfc;
}

/* 悬停只在真正有鼠标的设备上生效，否则触屏点完会把高亮“粘”在该行上。 */
@media (hover: hover) {
  .site-navigation > a:hover,
  .site-navigation-trigger:hover {
    background: #e8eeff;
    color: #155dfc;
  }
}

.site-navigation a:focus-visible,
.site-navigation-trigger:focus-visible,
.site-navigation-toggle:focus-visible {
  outline: 2px solid #155dfc;
  outline-offset: 2px;
}

.site-navigation-dropdown { position: relative; }

.site-navigation-dropdown::after {
  content: "";
  position: absolute;
  top: 100%;
  right: -10px;
  left: -10px;
  height: 16px;
}

.site-navigation-menu {
  position: absolute;
  top: calc(100% + 2px);
  left: 50%;
  z-index: 30;
  width: 306px;
  padding: 10px;
  border: 1px solid rgba(221, 225, 235, .95);
  border-radius: 20px;
  background: rgba(255, 255, 255, .98);
  box-shadow: 0 20px 50px rgba(23, 26, 36, .12);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, -8px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
}

.site-navigation-dropdown.is-open .site-navigation-menu,
html:not(.site-navigation-enhanced) .site-navigation-dropdown:hover .site-navigation-menu,
html:not(.site-navigation-enhanced) .site-navigation-dropdown:focus-within .site-navigation-menu {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.site-navigation-menu a {
  display: block;
  padding: 11px 13px;
  border-radius: 13px;
  color: #171a24;
  font-size: 14px;
  line-height: 1.35;
  text-decoration: none;
}

.site-navigation-menu a + a { margin-top: 3px; }

.site-navigation-menu a[aria-current="page"] {
  background: linear-gradient(100deg, #e8eeff, #f6f8ff);
  color: #155dfc;
}

@media (hover: hover) {
  .site-navigation-menu a:hover {
    background: linear-gradient(100deg, #e8eeff, #f6f8ff);
    color: #155dfc;
  }
}

.site-navigation-menu small {
  display: block;
  margin-top: 3px;
  color: #697086;
  font-size: 11px;
  line-height: 1.45;
}

.site-navigation-header .header-actions,
.site-navigation-header .nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-navigation-header .shortcut-capsule {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  gap: 2px;
  padding: 4px 5px 4px 4px;
  border: 1px solid #dde1eb;
  border-radius: 999px;
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 5px 16px rgba(23, 26, 36, .05);
  white-space: nowrap;
}

.site-navigation-header .shortcut-index {
  display: grid;
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  place-items: center;
  border-radius: 50%;
  background: #e8eeff;
  color: #155dfc;
  font-size: 11px;
  font-weight: 500;
}

.site-navigation-header .shortcut-link {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  border-radius: 999px;
  color: #596075;
  font-size: 12px;
  font-weight: 400;
  text-decoration: none;
  transition: background .16s ease, color .16s ease;
}

@media (hover: hover) {
  .site-navigation-header .shortcut-link:hover {
    background: #e8eeff;
    color: #155dfc;
  }
}

.site-navigation-header .shortcut-link.primary {
  padding: 0 14px;
  background: #155dfc;
  color: #fff;
}

@media (hover: hover) {
  .site-navigation-header .shortcut-link.primary:hover {
    background: #0e46c8;
    color: #fff;
  }
}

/* 中等宽度只容不下快捷入口，但仍保留桌面导航胶囊。 */
@media (min-width: 861px) and (max-width: 1080px) {
  .site-navigation-header .header-actions,
  .site-navigation-header .nav-actions { display: none !important; }
}

/* 窄屏：粘性紧凑栏 + 可折叠抽屉，链接与快捷入口全部保留在抽屉内。 */
@media (max-width: 860px) {
  html { scroll-padding-top: 76px; }

  .site-navigation-header { position: sticky; }

  .site-navigation-header .site-navigation-layout {
    height: auto;
    min-height: 60px;
    padding: 8px 0;
    flex-wrap: wrap;
    align-items: center;
    row-gap: 0;
  }

  .site-navigation-toggle {
    display: inline-flex;
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    margin-left: auto;
    align-items: center;
    justify-content: center;
    padding: 0;
    border: 1px solid #dde1eb;
    border-radius: 13px;
    background: #fff;
    box-shadow: 0 5px 16px rgba(23, 26, 36, .05);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: background .16s ease, border-color .16s ease;
  }

  /* 触屏没有 hover，按下与展开都用品牌浅底反馈；展开时图标转为品牌色。 */
  @media (hover: hover) {
    .site-navigation-toggle:hover {
      border-color: #cfd9f2;
      background: #f6f8fe;
    }
  }

  .site-navigation-toggle:active,
  .site-navigation-toggle[aria-expanded="true"] {
    border-color: #cddafd;
    background: #e8eeff;
  }

  .site-navigation-toggle[aria-expanded="true"] .site-navigation-toggle-bars i { background: #155dfc; }

  .site-navigation-toggle-bars { position: relative; display: block; width: 18px; height: 14px; }

  .site-navigation-toggle-bars i {
    position: absolute;
    left: 0;
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: #171a24;
    transition: transform .2s ease, opacity .16s ease, background-color .16s ease;
  }

  .site-navigation-toggle-bars i:nth-child(1) { top: 0; }
  .site-navigation-toggle-bars i:nth-child(2) { top: 6px; }
  .site-navigation-toggle-bars i:nth-child(3) { top: 12px; }

  .site-navigation-toggle[aria-expanded="true"] .site-navigation-toggle-bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .site-navigation-toggle[aria-expanded="true"] .site-navigation-toggle-bars i:nth-child(2) { opacity: 0; }
  .site-navigation-toggle[aria-expanded="true"] .site-navigation-toggle-bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  /* 折叠时不占位、不可聚焦；visibility 延迟到收起动画结束。 */
  .site-navigation-panel {
    flex: 0 0 100%;
    display: block;
    max-height: 0;
    padding: 0 8px;
    overflow: hidden;
    visibility: hidden;
    transition: max-height .28s ease, visibility 0s linear .28s;
  }

  /* 展开态与无脚本静态展开共用同一块不透明面板，避免半透明灰底透出下方内容。 */
  .site-navigation-toggle[aria-expanded="true"] ~ .site-navigation-panel,
  html:not(.site-navigation-enhanced) .site-navigation-panel {
    padding: 4px 8px 14px;
    border: 1px solid #e6e9f1;
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 18px 36px rgba(23, 26, 36, .08);
    visibility: visible;
  }

  .site-navigation-toggle[aria-expanded="true"] ~ .site-navigation-panel {
    /* 先给兼容值，再按视口收敛高度；不支持 min()/max() 的浏览器保留上一行可用。 */
    max-height: 78vh;
    max-height: max(240px, min(78vh, calc(100vh - 140px)));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    transition: max-height .28s ease, visibility 0s;
  }

  /* 无脚本或脚本未加载时保持静态展开，只隐藏失效的开关。 */
  html:not(.site-navigation-enhanced) .site-navigation-toggle { display: none; }

  html:not(.site-navigation-enhanced) .site-navigation-panel {
    max-height: none;
    overflow: visible;
  }

  .site-navigation-panel { scrollbar-width: thin; }
  .site-navigation-panel::-webkit-scrollbar { width: 4px; }
  .site-navigation-panel::-webkit-scrollbar-thumb { border-radius: 4px; background: rgba(23, 26, 36, .16); }

  .site-navigation {
    display: block;
    width: auto;
    padding: 10px 0 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }

  .site-navigation > a {
    display: flex;
    width: 100%;
    min-height: 48px;
    align-items: center;
    justify-content: flex-start;
    padding: 0 12px;
    border-radius: 14px;
    font-size: 16px;
  }

  .site-navigation-dropdown { display: block; position: static; }
  .site-navigation-dropdown::after { display: none; }
  .site-navigation-trigger { display: none; }

  .site-navigation-menu {
    position: static;
    display: block;
    width: auto;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: none;
  }

  .site-navigation-menu::before {
    content: "产品与服务";
    display: block;
    padding: 14px 12px 4px;
    color: #8b92a6;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: .06em;
  }

  .site-navigation-menu a {
    display: block;
    min-height: 46px;
    padding: 8px 12px;
    border-radius: 14px;
    font-size: 15px;
    line-height: 1.4;
  }

  .site-navigation-menu a + a { margin-top: 2px; }

  .site-navigation-menu small {
    display: block;
    margin-top: 2px;
    font-size: 12px;
  }

  /* 触屏反馈改为可控的中性浅灰，同时关掉浏览器默认的灰蓝遮罩。 */
  .site-navigation-header a,
  .site-navigation-header button { -webkit-tap-highlight-color: transparent; }

  .site-navigation > a:active,
  .site-navigation-menu a:active {
    background: #eef1f7;
    color: #171a24;
  }

  .site-navigation-header .header-actions,
  .site-navigation-header .nav-actions {
    display: block;
    margin-top: 18px;
    padding: 16px 0 0;
    border-top: 1px solid #e6e9f1;
  }

  .site-navigation-header .header-actions::before,
  .site-navigation-header .nav-actions::before {
    content: "快捷入口";
    display: block;
    margin-bottom: 10px;
    padding: 0 12px;
    color: #8b92a6;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: .06em;
  }

  .site-navigation-header .shortcut-capsule {
    display: flex;
    width: 100%;
    min-height: 0;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    padding: 6px;
    border-radius: 16px;
    white-space: normal;
  }

  .site-navigation-header .shortcut-capsule + .shortcut-capsule { margin-top: 8px; }

  .site-navigation-header .shortcut-link {
    flex: 1 1 auto;
    min-height: 44px;
    padding: 0 12px;
    border-radius: 12px;
    background: #f2f4f9;
    font-size: 13px;
  }

  .site-navigation-header .shortcut-link.primary {
    flex: 0 1 auto;
    padding: 0 16px;
    background: #155dfc;
    color: #fff;
  }

  .site-navigation-header .shortcut-link:active {
    background: #e3e8f2;
    color: #171a24;
  }

  .site-navigation-header .shortcut-link.primary:active {
    background: #0e46c8;
    color: #fff;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-navigation-panel,
  .site-navigation-toggle-bars i,
  .site-navigation-menu { transition: none; }
}