/* Shared first-party chrome. Content controls keep their service styles. */
:root{--bg:light-dark(#f7f7f1,#18221c);--paper:light-dark(#fffefb,#222d26);--surface:var(--paper);--ink:light-dark(#233f34,#e2ebe3);--muted:light-dark(#647368,#b2c1b6);--line:light-dark(#e0e5da,#435448);--soft:light-dark(#ebf0e6,#2c3e31);--green:light-dark(#245143,#bed7c4);--on:light-dark(#fffefa,#183021);--side:light-dark(#f0f2ea,#1c2820);font:14px/1.6 system-ui,"Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink)}
body{margin:0;background:var(--bg)}[hidden]{display:none!important}
.topbar{display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:40;width:100%;height:88px;min-height:88px;padding:16px 30px;gap:20px;background:var(--paper);border-bottom:1px solid var(--line)}
.topbar .brand{display:flex;align-items:center;gap:12px;color:var(--ink);font:600 23px/1.4 Georgia,"Songti SC",serif;letter-spacing:-.035em;text-decoration:none;white-space:nowrap}
.topbar .brand small{display:block;font:11px/1.4 system-ui,"Microsoft YaHei",sans-serif;letter-spacing:.04em;color:var(--muted);margin-top:2px}
.brand-symbol{display:grid;grid-template-columns:9px 9px;grid-template-rows:9px 9px;gap:3px;padding:10px;width:42px;height:42px;background:var(--green);border-radius:11px;color:var(--on);box-sizing:border-box}.brand-symbol i{display:block;border:1px solid currentColor;border-radius:2px}.brand-symbol i:first-child{grid-row:1/3}
.topbar-end{display:flex;align-items:center;gap:18px;margin-left:auto}.topbar .language{display:block}.topbar .language select{width:104px;min-height:42px;font:12px/1.6 system-ui,"Microsoft YaHei",sans-serif;padding:8px 10px;border:1px solid var(--line);border-radius:7px;background:transparent;color:var(--ink)}
.top-account{position:relative;display:flex;align-items:center;flex:none;padding:0;border:0}.top-account>.account-trigger{display:grid;place-items:center;width:44px;height:44px;min-width:44px;min-height:44px;padding:0;border:1px solid var(--green);border-radius:50%;background:var(--soft);color:var(--green);cursor:pointer}.account-trigger>span{font:600 17px/1 system-ui,"Microsoft YaHei",sans-serif}.top-account>.account-trigger:hover:not(:disabled),.top-account>.account-trigger[aria-expanded=true]{background:var(--green);color:var(--on)}
.account-panel{position:absolute;inset-inline-end:0;top:calc(100% + 12px);width:280px;max-width:calc(100vw - 24px);max-height:calc(100dvh - 110px);overflow-y:auto;padding:9px;background:var(--paper);border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 38px light-dark(#20342820,#00000060);z-index:50;box-sizing:border-box}.account-identity{padding:12px 12px 16px;margin-bottom:7px;border-bottom:1px solid var(--line)}.account-identity p{margin:0;overflow-wrap:anywhere}.account-identity #top-account-name{font-size:14px;font-weight:600;line-height:1.5}.account-identity #account-label{font-size:11px;line-height:1.6;color:var(--muted);margin-top:5px}
.account-panel>a,.account-panel>button,.account-panel .library-admin-links>a{display:block;width:100%;min-height:44px;text-align:left;padding:10px 12px;border:0;background:transparent;color:var(--ink);border-radius:7px;font:13px/1.6 system-ui,"Microsoft YaHei",sans-serif;white-space:normal;overflow-wrap:anywhere;text-decoration:none;box-sizing:border-box;cursor:pointer}.account-panel>a:hover,.account-panel>button:hover:not(:disabled),.account-panel .library-admin-links>a:hover{background:var(--soft)}.account-panel .library-admin-links{margin:0;gap:0}.top-account>#top-signin-link{padding:10px 14px;background:var(--green);color:var(--on);border-radius:7px;text-decoration:none;font-size:12px;white-space:nowrap}
.workspace,.static-workspace{display:grid;grid-template-columns:244px minmax(0,1fr);min-height:calc(100vh - 88px)}.navigation{display:block;align-self:start;position:sticky;top:88px;height:calc(100vh - 88px);min-height:0;max-height:calc(100vh - 88px);overflow:auto;padding:34px 18px 18px;border-right:1px solid var(--line);background:var(--side)}.navigation .eyebrow{font-size:10px;letter-spacing:.09em;padding:0 14px 14px;color:var(--muted);margin:0}.navigation button,.navigation a{display:flex;align-items:center;gap:12px;width:100%;min-height:44px;padding:12px 14px;margin:3px 0;text-align:left;border:0;border-radius:9px;background:transparent;color:var(--muted);text-decoration:none;font:13px/1.6 system-ui,"Microsoft YaHei",sans-serif;box-sizing:border-box}.navigation [aria-current=page]{background:var(--soft)!important;color:var(--ink)!important;font-weight:600!important;box-shadow:none!important}.navigation button:hover:not(:disabled),.navigation a:hover{background:var(--soft);color:var(--ink)}.nav-icon{font:20px/1 system-ui,sans-serif;width:20px;flex:none;text-align:center}.nav-divider{height:1px;margin:22px 13px;background:var(--line)}
.static-workspace>.catalog-shell{width:100%;max-width:1620px;min-width:0;margin:0;padding:24px clamp(24px,4vw,66px) 0}.static-workspace .catalog-intro{padding-top:28px}.static-workspace main{padding:0;max-width:none}.static-workspace .filter-panel{top:112px}.static-workspace .library-primary-nav{padding-top:0}.static-workspace .site-footer{margin-top:24px}.static-workspace .catalog-layout{grid-template-columns:210px minmax(0,1fr);gap:24px}.static-workspace .book-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.static-workspace h1{font:500 clamp(28px,2.8vw,39px)/1.35 Georgia,"Songti SC",SimSun,serif}
.shell-status{max-width:720px;margin:10vh auto;padding:30px}.shell-status p{margin:18px 0;color:var(--muted)}.shell-status button{padding:10px 16px;border:1px solid var(--line);border-radius:7px;background:var(--paper);color:var(--ink);cursor:pointer}.shell-status a{color:var(--green)}.topbar :focus-visible,.navigation :focus-visible,.shell-status :focus-visible{outline:3px solid var(--green);outline-offset:3px}
.workspace[data-mode=admin]>.navigation:not(.admin-local-nav){display:none}.workspace>.admin-local-nav{margin:0;display:block;border-radius:0;padding:34px 18px 18px;border:0;border-right:1px solid var(--line)}.workspace>.admin-local-nav a,.workspace>.admin-local-nav button{border:0;background:transparent;display:flex;align-items:center;min-height:44px;padding:12px 14px;font:13px/1.6 system-ui,"Microsoft YaHei",sans-serif}
.account-panel #shell-collection-management>a{display:block;min-height:44px;padding:10px 12px;border:0;border-radius:7px;background:transparent;color:var(--ink);font:13px/1.6 system-ui,"Microsoft YaHei",sans-serif;text-decoration:none;text-align:left}.account-panel #shell-collection-management>a:hover{background:var(--soft)}
@media(max-width:1180px){.topbar .service-label{display:none}.static-workspace .catalog-layout{grid-template-columns:1fr}.static-workspace .filter-panel{position:static}.static-workspace .language-fieldset>div{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:3px 16px}}
@media(max-width:780px){.topbar{height:78px;min-height:78px;padding:14px 20px;flex-wrap:nowrap;gap:14px}.topbar .brand{font-size:20px}.workspace,.static-workspace{grid-template-columns:minmax(0,1fr);min-height:calc(100vh - 78px)}.navigation{position:static;height:auto;max-height:none;padding:10px 14px;border-right:0;border-bottom:1px solid var(--line)}.navigation .nav-main{display:flex;flex-wrap:wrap;gap:5px}.navigation button,.navigation a{width:auto;margin:0;padding:9px 11px;font-size:12px;gap:7px}.navigation .eyebrow,.navigation .nav-divider{display:none}.nav-icon{font-size:17px;width:16px}.static-workspace>.catalog-shell{padding:24px 20px 0}.topbar-end{gap:10px;width:auto;flex-basis:auto}.static-workspace .catalog-intro{padding-top:25px}.account-panel{max-height:calc(100dvh - 100px)}}
@media(max-width:580px){.topbar{height:72px;min-height:72px;padding:12px 16px;gap:10px}.topbar .brand{font-size:18px;gap:8px}.topbar .brand-symbol,.topbar .brand small{display:none}.topbar .language select{width:82px;padding:8px 6px}.topbar-end{gap:10px}.top-account>.account-trigger{width:42px;height:42px;min-width:42px;min-height:42px}.static-workspace .book-grid{grid-template-columns:1fr}.static-workspace .language-fieldset>div{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:780px){.workspace>.admin-local-nav{display:flex;flex-wrap:wrap;gap:5px;padding:10px 14px;border-right:0;border-bottom:1px solid var(--line)}.workspace>.admin-local-nav a,.workspace>.admin-local-nav button{width:auto;margin:0;padding:9px 11px;font-size:12px}}
.document-reader{padding:8px 0 48px!important}.document-reader>.secondary-button{margin-bottom:30px}.document-reader .section-heading{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:20px;margin-bottom:24px}.document-reader pre{white-space:pre-wrap;overflow-wrap:anywhere;font:16px/1.9 Georgia,"Songti SC",serif;max-width:900px;padding:28px;border:1px solid var(--line);border-radius:13px;background:var(--paper);margin:24px 0}.document-reader p{color:var(--muted);font-size:13px}
.account-trigger>#account-avatar{display:grid;place-items:center;width:100%;height:100%;border-radius:50%;overflow:hidden}.account-trigger .profile-avatar-image{display:block;width:100%;height:100%;object-fit:cover;border-radius:50%}