/* 仅在既有生物产品目录启用共同底色；背景跨越标题、检索和公司说明，避免每段渐变重新起算产生拼接边界。 */
html[data-theme="navy"] body.fusion-catalogue #page-content:has(>.catalogue-layout){
  background:
    radial-gradient(ellipse 1000px 720px at 78% 720px,rgba(26,70,152,.22),transparent 74%),
    radial-gradient(ellipse 1100px 900px at 14% 1550px,rgba(6,36,91,.18),transparent 76%),
    linear-gradient(180deg,#041632 0px,#03132e 700px,#020c20 1900px,#03132d 100%);
}
/* 各段透出同一背景，原有留白、列宽和设备展台保持不变；不在标题底边或侧栏边缘截断光照。 */
html[data-theme="navy"] body.fusion-catalogue #page-content:has(>.catalogue-layout)>.breadcrumb,
html[data-theme="navy"] body.fusion-catalogue #page-content:has(>.catalogue-layout)>.page-intro,
html[data-theme="navy"] body.fusion-catalogue #page-content:has(>.catalogue-layout)>.catalogue-layout,
html[data-theme="navy"] body.fusion-catalogue #page-content:has(>.catalogue-layout)>.catalogue-support{
  background:transparent;
}
html[data-theme="navy"] body.fusion-catalogue #page-content>.catalogue-layout::before,
html[data-theme="navy"] body.fusion-catalogue #page-content>.catalogue-layout::after{background:none}
/* 选中状态通过冰蓝竖线和低强度侧光识别，撤掉近黑实底与内阴影，保留原有点击和焦点行为。 */
html[data-theme="navy"] body.fusion-catalogue #page-content .category-rail{background:transparent}
html[data-theme="navy"] body.fusion-catalogue #page-content .category-rail button{border-bottom-color:rgba(171,192,219,.16)}
html[data-theme="navy"] body.fusion-catalogue #page-content .category-rail button[aria-current="true"]{
  background:linear-gradient(90deg,rgba(26,70,152,.23),rgba(6,36,91,.04));
  border-left-color:#a6c5ff;
  color:#f3f7fc;
  box-shadow:none;
  backdrop-filter:none;
  -webkit-backdrop-filter:none;
}
html[data-theme="navy"] body.fusion-catalogue #page-content .category-rail button:hover{background:rgba(26,70,152,.14)}
html[data-theme="navy"] body.fusion-catalogue #page-content .fusion-search input,
html[data-theme="navy"] body.fusion-catalogue #page-content .chip:not([aria-pressed="true"]){
  background:rgba(4,26,67,.32);
  border-color:rgba(171,192,219,.28);
  box-shadow:none;
}
/* 公司说明继续保留原有内边距和图文位置，只减轻面板填色与边缘，不形成另一套舞台。 */
html[data-theme="navy"] body.fusion-catalogue #page-content .catalogue-support{border-top-color:rgba(147,185,238,.14)}
html[data-theme="navy"] body.fusion-catalogue #page-content .catalogue-support-company{
  background:rgba(6,36,91,.08);
  border-color:rgba(147,185,238,.10);
  box-shadow:none;
}
/* 窄屏仍共用连续底色，柔光缩至阅读区域宽度，避免光斑在手机上变成整片亮底。 */
@container website (max-width:700px){
  html[data-theme="navy"] body.fusion-catalogue #page-content:has(>.catalogue-layout){
    background:
      radial-gradient(ellipse 440px 700px at 85% 1050px,rgba(26,70,152,.17),transparent 74%),
      linear-gradient(180deg,#041632,#020c20 1900px,#03132d 100%);
  }
}