/* Shared information architecture; retain Huangchu's existing shell and tokens. */
.sidebar .unified-nav{padding-top:8px;padding-bottom:24px}
.sidebar .nav-module{border:0;background:transparent;margin:2px 0;border-radius:0}
.sidebar .nav-module>summary{list-style:none;display:flex;align-items:center;gap:10px;min-height:42px;padding:8px 14px;color:var(--hc-border);cursor:pointer;font-size:14px;font-weight:600;border-radius:6px}
.sidebar .nav-module>summary::-webkit-details-marker{display:none}.sidebar .nav-module>summary::after{content:'›';margin-left:auto;font-size:18px;color:var(--hc-sidebar-muted)}
.sidebar .nav-module[open]>summary::after{transform:rotate(90deg)}.sidebar .nav-module[open]>summary{color:var(--hc-on-solid)}
.sidebar .nav-module>summary:hover{background:rgba(215,25,32,.12)}.sidebar .nav-module>summary:focus-visible{outline:2px solid var(--hc-brand);outline-offset:-2px}
.sidebar .nav-module-links{padding:2px 0 6px 22px}.sidebar .nav-module-links a{min-height:35px;padding:7px 12px;font-size:13px;white-space:normal;line-height:1.45}
.sidebar .unified-nav .nav-all-workspaces{border-top:1px solid var(--hc-sidebar-line);margin-top:12px;padding-top:14px;font-size:12px;color:var(--hc-sidebar-muted)}
.workspace-context{margin:0 0 18px;border-bottom:1px solid var(--hc-border);padding:10px 0 12px;min-width:0}
.workspace-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--hc-muted);min-height:24px}.workspace-breadcrumb a{color:var(--hc-muted)}.workspace-breadcrumb strong{color:var(--hc-text);font-weight:600}
.workspace-tabs{display:flex;gap:4px 16px;flex-wrap:wrap;margin-top:8px}.workspace-tabs a{padding:7px 0;color:var(--hc-muted);font-size:13px;text-decoration:none;border-bottom:2px solid transparent;min-height:34px;box-sizing:border-box}.workspace-tabs a[aria-current=page]{color:var(--hc-brand-strong);border-bottom-color:var(--hc-brand);font-weight:600}
.workspace-carried-context{margin-left:auto}.sidebar-head .logo{font-size:13px}.sidebar-head .logo span{font-size:20px}
@media(max-width:760px){.workspace-context{margin-bottom:12px}.workspace-carried-context{margin-left:0;width:100%}.workspace-tabs{gap:4px 14px}.sidebar .nav-module>summary{min-height:44px}.sidebar .nav-module-links a{min-height:40px}}

.workspace-overview{padding:4px 0 18px;margin-bottom:18px;border-bottom:1px solid var(--hc-border)}.workspace-overview h2{font-size:16px;margin:0 0 6px}.workspace-overview-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.workspace-overview-grid a{display:grid;gap:6px;padding:12px;border:1px solid var(--hc-border);border-radius:6px;background:var(--hc-surface);color:var(--hc-text);text-decoration:none}.workspace-overview-grid span{font-size:13px}.workspace-overview-grid small{font-size:12px;color:var(--hc-muted)}@media(max-width:760px){.workspace-overview-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}