/* Xuanqing: original mechanical archive UI. Decoration stays outside the reading area. */
[data-theme="xuanqing"]{
  color-scheme:dark;
  --ink:#d8e2ea;--navy:#eff6fa;--muted:#a5b7c8;--blue:#a5e2ec;--teal:#7fe3f0;
  --canvas:#0b1016;--paper:#111a23;--wash:#233849;--line:#354c61;
  --accent:#276580;--accent-soft:#1e3444;--head-bg:#101923;--rail:#101a26;
  --card:#182432;--title:#ade3f9;--selected:#203e50;--rule:#628ca4;
  --soft:#152330;--supplement:#162e34;--supplement-line:#456f77;
  --pg-bg:#0c1824;--pg-ink:#e8f4ff;--pg-edge:#7edfea;--pg-indirect:#c4b6f0;
  --seal:var(--accent);--gold:var(--rule);--notice:#bacbda;--notice-bg:#192936;
  --radius:4px;--shadow:0 4px 16px #03070d26;--signal:#f2b880;
}
[data-theme="xuanqing"] body{font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;background-color:var(--canvas);background-image:linear-gradient(#40607a0b 1px,transparent 1px),linear-gradient(90deg,#40607a0b 1px,transparent 1px);background-size:48px 48px}
[data-theme="xuanqing"] h1,[data-theme="xuanqing"] h2,[data-theme="xuanqing"] h3,[data-theme="xuanqing"] h4,[data-theme="xuanqing"] .brand,[data-theme="xuanqing"] .study-index-title{font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:var(--navy);letter-spacing:.025em}
[data-theme="xuanqing"] a{color:var(--blue)}
[data-theme="xuanqing"] a:hover{color:#d9f5ff}
[data-theme="xuanqing"] .topbar{
  background:linear-gradient(180deg,#1c2a38 0,#111c28 58%,#101a24 100%);
  border-top:3px solid #8fcbd5;border-bottom:1px solid #47647a;
  box-shadow:0 5px 20px #0005,inset 0 1px #d7edff18;
}
[data-theme="xuanqing"] .brand-mark{background:#142433 url('mecha-core.svg?v=d0dd8875aa8b') center/39px 39px no-repeat;border:1px solid #64899f;border-radius:5px;box-shadow:inset 0 0 0 3px #0c151e,0 0 14px #56bdd414}
[data-theme="xuanqing"] .brand-mark svg{visibility:hidden}
[data-theme="xuanqing"] .brand strong{font-weight:550;color:#adc1d0}
[data-theme="xuanqing"] .brand-divider{color:#56768b}
[data-theme="xuanqing"] .appearance-control,[data-theme="xuanqing"] .text-size-control{background:#121f2d;border:1px solid #496377;border-radius:4px;box-shadow:inset 0 1px #a6d8ed13}
[data-theme="xuanqing"] .appearance-control select,[data-theme="xuanqing"] .text-size-control button{color:var(--ink);background:#142432;border-color:#496377}
[data-theme="xuanqing"] .text-size-control button[aria-pressed=true]{background:#284f65;color:#f3fbff;border-color:#8ec8db;box-shadow:inset 0 -2px #92deeb}
[data-theme="xuanqing"] .edition{color:var(--muted);font-variant-numeric:tabular-nums}
[data-theme="xuanqing"] .text-size-label{color:#bacbd8}
[data-theme="xuanqing"] .workspace{border-color:#354d61;box-shadow:0 0 32px #0002}
[data-theme="xuanqing"] .sidebar,[data-theme="xuanqing"] .study-outline{background:#101b28;border-color:#354b61;background-image:none;box-shadow:inset -1px 0 #6ba5c60b}
[data-theme="xuanqing"] .sidebar h2,[data-theme="xuanqing"] .sidebar h3,[data-theme="xuanqing"] .sidebar .index-head,[data-theme="xuanqing"] .study-outline-head{color:#cbdce8}
[data-theme="xuanqing"] .sidebar a{color:#b9ccd9}
[data-theme="xuanqing"] .sidebar p,[data-theme="xuanqing"] .sidebar .record-small,[data-theme="xuanqing"] .index-head>span,[data-theme="xuanqing"] .quick-terms>span{color:#a5bbcb}
[data-theme="xuanqing"] .sidebar .topic-link{background:#1e3647;color:#c4e9f2;border-color:#668ca0}
[data-theme="xuanqing"] .sidebar a:hover,[data-theme="xuanqing"] .question-index a:hover{background:#203447;color:#f1f9ff}
[data-theme="xuanqing"] .sidebar a[aria-current=page],[data-theme="xuanqing"] .sidebar a.active,[data-theme="xuanqing"] .study-index-item.is-active .study-index-title,[data-theme="xuanqing"] .study-index-title[aria-current=true]{background:#203a4d;color:#e7faff;border-color:#7fbace;box-shadow:inset 3px 0 var(--signal)}
[data-theme="xuanqing"] .sidebar .count,[data-theme="xuanqing"] .nav-count{color:#a4bfd0}
[data-theme="xuanqing"] .copyright-banner{position:relative;background:#15232f;border:1px solid #496176;border-left:3px solid #829bab;border-radius:4px;box-shadow:inset 0 1px #aec9d010;color:#b6c9d6}
[data-theme="xuanqing"] .copyright-owner,[data-theme="xuanqing"] .copyright-owner strong{color:#d2e1eb}
[data-theme="xuanqing"] .copyright-banner p{color:#b7cad8}
[data-theme="xuanqing"] .copyright-feedback summary{color:#9bd8e0}
[data-theme="xuanqing"] .copyright-banner::before{content:none}
[data-theme="xuanqing"] .search-box{background:#0d1924;border-color:#688aa0;border-radius:4px;box-shadow:inset 0 2px 6px #0003}
[data-theme="xuanqing"] .search-box input{color:#ecf6ff;background:transparent}
[data-theme="xuanqing"] input::placeholder,[data-theme="xuanqing"] textarea::placeholder{color:#94aabb;opacity:1}
[data-theme="xuanqing"] .search-box svg{stroke:#9cc3d8}
[data-theme="xuanqing"] .search-box button{background:#285e78;color:#f5fbff;border-color:#88b4cc;border-radius:3px;box-shadow:inset 0 1px #e2f7ff22}
[data-theme="xuanqing"] .quick-terms a{color:#9fcfdf;border-color:#4a7188}
[data-theme="xuanqing"] .content-heading,[data-theme="xuanqing"] .result-group-heading{border-color:#48677d;padding-left:0}
[data-theme="xuanqing"] .content-heading::before,[data-theme="xuanqing"] .result-group-heading::before{content:none}
[data-theme="xuanqing"] .content-heading::after,[data-theme="xuanqing"] .result-group-heading::after{background:var(--signal);height:3px}
[data-theme="xuanqing"] .eyebrow,[data-theme="xuanqing"] .study-selection-label{color:#a9c6d8;letter-spacing:.08em}
[data-theme="xuanqing"] .reading-note,[data-theme="xuanqing"] .search-intro,[data-theme="xuanqing"] #result-status,[data-theme="xuanqing"] .note-version-status{color:var(--muted)}
[data-theme="xuanqing"] .faq-card,[data-theme="xuanqing"] .catalog-card.source-compact,[data-theme="xuanqing"] .keyword-card,[data-theme="xuanqing"] .story-card{background:#182432;border:1px solid #354f65;border-left:3px solid #52758b;border-radius:4px;box-shadow:inset 0 1px #c9e9fb09,0 3px 10px #0002}
[data-theme="xuanqing"] .faq-card:hover,[data-theme="xuanqing"] .catalog-card.source-compact:hover,[data-theme="xuanqing"] .keyword-card:hover{border-color:#709aad;background:#1b2b3a}
[data-theme="xuanqing"] .faq-card::before,[data-theme="xuanqing"] .faq-card::after,[data-theme="xuanqing"] .catalog-card::before,[data-theme="xuanqing"] .catalog-card::after{content:none}
[data-theme="xuanqing"] .question-row,[data-theme="xuanqing"] .keyword-entry,[data-theme="xuanqing"] .source-detail,[data-theme="xuanqing"] .map-person-card{background:#182432;border:1px solid #3d586d;border-radius:4px;box-shadow:none}
[data-theme="xuanqing"] .question-row::before,[data-theme="xuanqing"] .question-row::after,[data-theme="xuanqing"] .keyword-entry::before,[data-theme="xuanqing"] .keyword-entry::after{content:none}
[data-theme="xuanqing"] .question-row:hover,[data-theme="xuanqing"] .keyword-entry:hover{background:#203648;border-color:#7eadc0}
[data-theme="xuanqing"] .question-row h2,[data-theme="xuanqing"] .keyword-entry h2{color:#b9e7f7}
[data-theme="xuanqing"] .question-row p,[data-theme="xuanqing"] .keyword-entry p,[data-theme="xuanqing"] .keyword-entry .keyword-count{color:#a4bacb}
[data-theme="xuanqing"] .keyword-type{color:#d6e9f3;background:#29465b}
[data-theme="xuanqing"] .record-small,[data-theme="xuanqing"] .catalog-access,[data-theme="xuanqing"] .attribution,[data-theme="xuanqing"] .aliases{color:#a7bdcd}
[data-theme="xuanqing"] .catalog-card.source-compact.is-study-selected{background:#203b4e;border-color:#9bd6e2;box-shadow:inset 3px 0 var(--signal)}
[data-theme="xuanqing"] .catalog-card.source-compact .source-title-row h2 a{color:#f4f7fa}
[data-theme="xuanqing"] .catalog-title a,[data-theme="xuanqing"] .question-title a{color:#ade3f9}
[data-theme="xuanqing"] .catalog-card.source-compact .source-title-row h2 a:hover{color:#fff}
[data-theme="xuanqing"] .source-category,[data-theme="xuanqing"] .catalog-meta,[data-theme="xuanqing"] .faq-meta{color:#a4baca}
[data-theme="xuanqing"] .note-versions a{background:#182e3e;color:#b1e5ec;border-color:#537f94;border-radius:3px}
[data-theme="xuanqing"] .note-versions a.note-version-primary{background:#285d75;color:#f3faff;border-color:#8ab6ca;box-shadow:inset 0 1px #e2f7ff20}
[data-theme="xuanqing"] .note-versions a:hover{background:#31586d;color:#fff}
[data-theme="xuanqing"] .record-quick,[data-theme="xuanqing"] .study-index-check,[data-theme="xuanqing"] .question-return,[data-theme="xuanqing"] .source-open,[data-theme="xuanqing"] .pagination button{background:#172b3b;color:#b1e0e8;border-color:#56798f}
[data-theme="xuanqing"] .source-tools summary{color:#acd6e0}
[data-theme="xuanqing"] .learning-progress strong{color:#b5e7f4}
[data-theme="xuanqing"] .learning-progress{box-shadow:none;border:1px solid #4d6c81}
[data-theme="xuanqing"] .progress-help summary{color:#a6d5de}
[data-theme="xuanqing"] .study-card{background:linear-gradient(120deg,#1c2c3c,#172431);border:1px solid #4b667c;border-radius:5px;box-shadow:inset 0 1px #cfeaf612,0 3px 10px #0002}
[data-theme="xuanqing"] .study-card::before,[data-theme="xuanqing"] .study-card::after,[data-theme="xuanqing"] .study-card-main::before,[data-theme="xuanqing"] .study-card-main::after{content:none}
[data-theme="xuanqing"] .study-card-main{background:transparent;color:#a9d7e7;border-radius:5px;box-shadow:none}
[data-theme="xuanqing"] .study-card:hover{background:#21374a;border-color:#88c1d5}
[data-theme="xuanqing"] .study-number{color:#e4c397;background:#172736;border:1px solid #658292;outline:0;border-radius:3px;box-shadow:inset 0 -2px #9cb7c138;font-family:ui-monospace,Consolas,monospace}
[data-theme="xuanqing"] .study-count{color:#b7cad8}
[data-theme="xuanqing"] .study-directory-hint{color:#94b3c5}
[data-theme="xuanqing"] .study-other-link{background:#152634;color:#b5dce8;border-color:#54788f}
[data-theme="xuanqing"] .study-index-title{color:#bdd3e2}
[data-theme="xuanqing"] .study-outline label{color:#c6d8e4}
[data-theme="xuanqing"] .study-index-item,[data-theme="xuanqing"] .source-tools,[data-theme="xuanqing"] .source-point,[data-theme="xuanqing"] .source-more{border-color:#3e5569;box-shadow:none}
[data-theme="xuanqing"] .study-card-main>span:last-child{color:#8cc7d9}
[data-theme="xuanqing"] .study-outline p,[data-theme="xuanqing"] .study-selection-bar,[data-theme="xuanqing"] .study-selection-bar p{color:#b6c9d7}
[data-theme="xuanqing"] .source-location-inline,[data-theme="xuanqing"] .source-locator,[data-theme="xuanqing"] .locator-line{background:#112331;color:#bfcfd9;border-color:#5f8c9e}
[data-theme="xuanqing"] .answer-content,[data-theme="xuanqing"] .answer-block,[data-theme="xuanqing"] .source-panel{color:var(--ink);background:var(--card);border-color:var(--line)}
[data-theme="xuanqing"] mark{color:#17222b;background:#dfbf81;border-radius:2px}
[data-theme="xuanqing"] .study-selected-label,[data-theme="xuanqing"] .source-selected-label{background:#344a50;color:#ffe0aa;border-color:#8d9a88}
[data-theme="xuanqing"] .pg-stage{background:#0c1824;border:1px solid #6b98ad;border-radius:5px;box-shadow:inset 0 0 50px #02091155,0 5px 16px #0003}
[data-theme="xuanqing"] .pg-evidence{background:#152432;border-color:#55758a;box-shadow:inset 0 3px #77b9ca}
[data-theme="xuanqing"] .pg-controls button[aria-pressed=true]{color:#edfaff;background:#26576e;border-color:#9accdf}
[data-theme="xuanqing"] .pg-controls button{border:1px solid #64899f;box-shadow:none}
[data-theme="xuanqing"] .pg-scope-notice summary,[data-theme="xuanqing"] .pg-name-directory summary{color:#bedee9}
[data-theme="xuanqing"] .pg-scope-notice,[data-theme="xuanqing"] .pg-name-directory,[data-theme="xuanqing"] .pg-source,[data-theme="xuanqing"] .pg-relation-part{background:#142330;border-color:#3f5c72;color:var(--ink)}
[data-theme="xuanqing"] .pg-source p{color:#b1c7d5}
[data-theme="xuanqing"] .pg-source a,[data-theme="xuanqing"] .pg-name-buttons button{color:#a2deed}
[data-theme="xuanqing"] .pg-canvas-status{background:#152b39dd;color:#e4f6ff}
[data-theme="xuanqing"] .pg-stage::before,[data-theme="xuanqing"] .pg-stage::after{border-color:#6eabbc}
[data-theme="xuanqing"] .pg-legend{background:#0b1621;border-color:#365a70}
[data-theme="xuanqing"] footer{border-top:1px solid #53758b;color:#a5b7c8}
[data-theme="xuanqing"] .feedback-shell{border-radius:5px;border-color:#53758b;box-shadow:inset 0 3px #7aabbc,0 8px 30px #0002}
[data-theme="xuanqing"] .feedback-privacy,[data-theme="xuanqing"] .reading-boundary{background:#172e3b;color:#c5d7e3;border-color:#7ca9b9}
[data-theme="xuanqing"] .feedback-shell input,[data-theme="xuanqing"] .feedback-shell select,[data-theme="xuanqing"] .feedback-shell textarea{background:#101f2c;border-color:#658398;color:#e4eff7}
[data-theme="xuanqing"] .feedback-actions button{background:#2a5d75;color:#f4fbff;border-color:#91bbcd}
[data-theme="xuanqing"] .feedback-actions button.secondary{background:#182a38;color:#c7e7f2}
[data-theme="xuanqing"] :focus-visible{outline:3px solid #f2bd80;outline-offset:3px}

/* Preview 5: calm mechanical archive. Only the theme overview uses artwork. */
.xuanqing-scene{display:none}
[data-theme="xuanqing"] body{background-image:none}
[data-theme="xuanqing"] .topbar{background:linear-gradient(110deg,#111c25,#0b131d);border-top:2px solid #55909d;border-bottom:1px solid #314755;box-shadow:0 8px 24px #02060933;gap:.7rem 1.5rem;padding-top:.85rem;padding-bottom:0}
[data-theme="xuanqing"] .brand-mark{width:2.2rem;height:2.2rem;background:#11202b url('mecha-core.svg?v=d0dd8875aa8b') center/1.95rem 1.95rem no-repeat;border:1px solid #44636e;border-radius:50%;box-shadow:0 0 18px #4ccbdd0c}
[data-theme="xuanqing"] .brand-divider{color:#8fa8b7}
[data-theme="xuanqing"] .topbar .site-modes{display:flex;justify-content:flex-start;gap:clamp(.6rem,2.5vw,2.4rem);border-top:1px solid #7893a31c;padding:0 .15rem;margin:0;overflow:visible}
[data-theme="xuanqing"] .topbar .site-modes a{position:relative;flex:0 1 auto;min-height:3.4rem;padding:.75rem .75rem .9rem;border:0;border-radius:0;background:transparent;color:#aebfcd;box-shadow:none;letter-spacing:.035em;font-weight:600;transition:color .18s ease,background-color .18s ease}
[data-theme="xuanqing"] .topbar .site-modes a::before{content:none}
[data-theme="xuanqing"] .topbar .site-modes a::after{content:"";position:absolute;left:.75rem;right:.75rem;bottom:0;height:3px;width:auto;transform:scaleX(0);transform-origin:center;background:#7fe3f0;border:0;border-radius:2px;transition:transform .2s ease;box-shadow:none}
[data-theme="xuanqing"] .topbar .site-modes a:hover{color:#effcff;background:#8cdceb08}
[data-theme="xuanqing"] .topbar .site-modes a[aria-current=page]{background:transparent;color:#b6f0f7;border:0;box-shadow:none;outline:none}
[data-theme="xuanqing"] .topbar .site-modes a:focus-visible{outline:3px solid #f2b880;outline-offset:-3px}
[data-theme="xuanqing"] .topbar .site-modes a[aria-current=page]::after{content:"";left:.75rem;right:.75rem;bottom:0;width:auto;height:3px;border:0;background:#7fe3f0;transform:scaleX(1)}
[data-theme="xuanqing"] .workspace{background:#101922;border-left:1px solid #31404c;border-right:1px solid #31404c;box-shadow:none}
[data-theme="xuanqing"] main{background:#111a23}
[data-theme="xuanqing"] .sidebar{background:#0e1720;border-right:1px solid #2c3b48;box-shadow:none}
[data-theme="xuanqing"] body[data-view="questions"][data-reading="false"] .sidebar .index-head,
[data-theme="xuanqing"] body[data-view="questions"][data-reading="false"] #question-index{display:none}
[data-theme="xuanqing"] .sidebar .sidebar-note{border-top:1px solid #31424f;padding-top:1rem;margin-top:1.5rem;font-size:.85rem;line-height:1.9;color:#a5b7c8}
[data-theme="xuanqing"] body[data-show-scene="true"] .xuanqing-scene{display:grid;position:relative;isolation:isolate;align-items:center;min-height:228px;padding:1.8rem 2rem;margin:0 0 1.1rem;overflow:hidden;border:1px solid #445664;border-radius:5px;background:#0b1016 url('archive-hangar-v1.webp?v=19d1e6bdbe08') center right/cover no-repeat;box-shadow:inset 0 1px #c6e8f111,0 14px 28px #03090f24}
[data-theme="xuanqing"] .xuanqing-scene::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,#081018de 0%,#081018ba 36%,#08101819 72%,transparent)}
[data-theme="xuanqing"] .xuanqing-scene::after{content:none}
[data-theme="xuanqing"] .scene-copy{max-width:59%;position:relative}
[data-theme="xuanqing"] .scene-kicker{display:flex;align-items:center;gap:.55rem;color:#ade9ef;font-size:.76rem;letter-spacing:.21em;margin:0 0 .65rem;font-weight:600}
[data-theme="xuanqing"] .scene-kicker span{width:5px;height:5px;background:#f2b880;border-radius:50%;box-shadow:0 0 9px #f2b88044}
[data-theme="xuanqing"] .scene-title{color:#f0f6fa;font-size:clamp(1.65rem,2.5vw,2.4rem);font-weight:600;letter-spacing:.12em;line-height:1.55;margin:0 0 .5rem;text-shadow:0 2px 14px #000}
[data-theme="xuanqing"] .scene-note{color:#b8cbd8;font-size:.92rem;line-height:1.85;margin:0}
[data-theme="xuanqing"] .copyright-banner{display:block;background:transparent;border:0;border-bottom:1px solid #334957;border-left:2px solid #687d8c;border-radius:0;box-shadow:none;min-height:0;padding:.35rem 0 .5rem 1rem;margin-bottom:1.15rem;font-size:.86rem;line-height:1.8}
[data-theme="xuanqing"] .copyright-banner::after{content:none}
[data-theme="xuanqing"] .copyright-banner p{margin:.15rem 0;line-height:1.9}
[data-theme="xuanqing"] .copyright-owner strong{font-size:.91rem;font-weight:550;color:#cedce5}
[data-theme="xuanqing"] .copyright-feedback{margin:.15rem 0}
[data-theme="xuanqing"] .copyright-feedback summary{font-size:.86rem;line-height:1.9}
[data-theme="xuanqing"] .search-box{border:1px solid #56788c;border-radius:4px;background:#0e1822;box-shadow:inset 0 1px 6px #0002}
[data-theme="xuanqing"] .search-box:focus-within{border-color:#89dce9;box-shadow:0 0 0 2px #74d6e019}
[data-theme="xuanqing"] .content-heading::after,[data-theme="xuanqing"] .result-group-heading::after{display:none}
[data-theme="xuanqing"] .content-heading{border-bottom:1px solid #3e586b}
[data-theme="xuanqing"] .result-group-heading{border-bottom:1px solid #334857}
[data-theme="xuanqing"] .question-row{position:relative;margin:0;border:0;border-bottom:1px solid #304451;border-radius:0;background:transparent;box-shadow:none}
[data-theme="xuanqing"] .question-row:hover{background:transparent;border-color:#496271}
[data-theme="xuanqing"] .question-row-link{position:relative;padding:1.15rem 2.1rem 1.15rem 1rem;border-radius:0;border-left:2px solid transparent;transition:background-color .18s ease,border-color .18s ease}
[data-theme="xuanqing"] .question-row-link::after{content:"↗";position:absolute;right:.6rem;top:1.25rem;color:#83acba;font-size:.9rem;opacity:0;transition:opacity .18s ease,color .18s ease}
[data-theme="xuanqing"] .question-row-link:hover,[data-theme="xuanqing"] .question-row-link:focus-visible{background:#1a2a35;border-left-color:#7fe3f0;color:var(--ink)}
[data-theme="xuanqing"] .question-row-link:hover::after,[data-theme="xuanqing"] .question-row-link:focus-visible::after{opacity:1;color:#b6f0f7}
[data-theme="xuanqing"] [data-result-kind="questions"]>.result-group-heading{display:none}
[data-theme="xuanqing"] .question-row h2{font-size:1.08rem;line-height:1.8;color:#dceaf2;font-weight:600;margin:0 0 .25rem}
[data-theme="xuanqing"] .question-row p{color:#a5b7c8;font-size:.84rem;margin:0;line-height:1.8}
[data-theme="xuanqing"] .keyword-entry{border:0;border-bottom:1px solid #354b5b;border-radius:0;background:transparent}
[data-theme="xuanqing"] .keyword-entry:hover{background:#1a2a35}
[data-theme="xuanqing"] .faq-card,[data-theme="xuanqing"] .source-detail{background:#141f2a;border-color:#405867;box-shadow:none}
[data-theme="xuanqing"] .faq-card:hover{background:#141f2a}
[data-theme="xuanqing"] .answer,[data-theme="xuanqing"] .point-text{color:#d8e2ea}
[data-theme="xuanqing"] .source-point .point-kind,[data-theme="xuanqing"] .source-point .point-source,[data-theme="xuanqing"] .source-item p,[data-theme="xuanqing"] .limits{color:#adbfcd}
[data-theme="xuanqing"] .ai-notice{color:#c6d4df;background:#1c2b38;border-left-color:#a6bac6}
[data-theme="xuanqing"] .point-label{color:#c0e4ee}
[data-theme="xuanqing"] .source-link{color:#a5e2ec}
[data-theme="xuanqing"] .source-link .link-kind{color:#b7c9d4;background:#263b4b;border-color:#536d7d}
[data-theme="xuanqing"] .point-actions>.read-original{color:#effaff;background:#285467;border-color:#85b8c7;box-shadow:none}
[data-theme="xuanqing"] .point-actions>.read-original:hover{color:#fff;background:#33687b}
[data-theme="xuanqing"] .point-actions>.read-original small{color:#d6edf2}
[data-theme="xuanqing"] .point-actions>.source-details>summary{color:#c8e4ed;background:#172a38;border-color:#638390}
[data-theme="xuanqing"] .study-card{background:linear-gradient(125deg,#1c2b38,#131f2a);border-color:#425969;box-shadow:inset 0 1px #bde8ef0a;transition:background-color .18s ease,border-color .18s ease}
[data-theme="xuanqing"] .study-card:hover{border-color:#83c8d3;background:#213644}
[data-theme="xuanqing"] .pg-stage{background:radial-gradient(ellipse at 50% 50%,#132a3a,#09131f);border-color:#638995;box-shadow:inset 0 0 70px #030a1155}
[data-theme="xuanqing"] .sidebar-toggle,[data-theme="xuanqing"] .study-outline-toggle{background:#172937;color:#deeff9;border-color:#658797}
[data-theme="xuanqing"] .sidebar-toggle [data-sidebar-toggle-label]{color:#a8d8e2}
[data-theme="xuanqing"] body[data-study-outline=true] .study-outline-toggle,[data-theme="xuanqing"] .study-outline-close{background:#172937;color:#deeff9;border-color:#658797;box-shadow:none}
[data-theme="xuanqing"] .catalog-card.source-compact .source-title-row h2 a span{color:#a5cfdd;opacity:1}
[data-theme="xuanqing"] .source-tools>.record-editor[open],[data-theme="xuanqing"] .source-tools>.source-tag-details[open],[data-theme="xuanqing"] .record-editor[open]{background:#142330;border-color:#486878;border-left-color:#83c8d3}
[data-theme="xuanqing"] .record-editor label,[data-theme="xuanqing"] .source-tag-details p,[data-theme="xuanqing"] .record-feedback,[data-theme="xuanqing"] .record-message{color:#becfdb}
[data-theme="xuanqing"] .record-editor summary,[data-theme="xuanqing"] .source-tag-details>summary{color:#b1e0e8}
[data-theme="xuanqing"] .record-editor textarea,[data-theme="xuanqing"] .record-editor select{background:#0e1b26;color:#e1eef5;border-color:#678696}
[data-theme="xuanqing"] .record-actions button,[data-theme="xuanqing"] .record-primary,[data-theme="xuanqing"] .record-import,[data-theme="xuanqing"] .record-filters button{background:#1b3444;color:#d3ecf4;border-color:#6d94a6}
[data-theme="xuanqing"] .source-keywords a{background:#203646;color:#b2e1ed;border-color:#5c8193}
[data-theme="xuanqing"] .person-map-picker form{background:#152634;border-color:#486878;border-left-color:#83c8d3}
[data-theme="xuanqing"] .person-map-picker label{color:#d8e2ea}
[data-theme="xuanqing"] .map-search-row input,[data-theme="xuanqing"] .map-story-select{background:#0f1e2a;color:#e1eef5;border-color:#678696}
[data-theme="xuanqing"] .map-search-row button{background:#285467;color:#effaff;border-color:#85b8c7}
[data-theme="xuanqing"] .map-story-choice{background:#172735;border-color:#456273;box-shadow:none}
[data-theme="xuanqing"] .map-story-choice:hover{background:#203746;border-color:#83c8d3}
[data-theme="xuanqing"] .map-story-choice strong{color:#d4edf5}
[data-theme="xuanqing"] .map-story-choice span,[data-theme="xuanqing"] .pg-scope-notice p{color:#b7c9d5}
[data-theme="xuanqing"] .personal-intro,[data-theme="xuanqing"] .empty-state{background:#152634;border-color:#5b7b8b;color:#d8e2ea;box-shadow:none}
[data-theme="xuanqing"] .personal-intro strong,[data-theme="xuanqing"] .personal-help summary{color:#d5e6ef}
[data-theme="xuanqing"] .personal-help p,[data-theme="xuanqing"] .empty-state p{color:#b7c9d5}
[data-theme="xuanqing"] .personal-intro a,[data-theme="xuanqing"] .empty-state a{color:#afe6f0}
[data-theme="xuanqing"] .appearance-control,[data-theme="xuanqing"] .text-size-control{box-shadow:none;border-color:#3e5768;background:#111e28}
[data-theme="xuanqing"] .sidebar a,[data-theme="xuanqing"] .search-box button,[data-theme="xuanqing"] .note-versions a{transition:background-color .18s ease,color .18s ease,border-color .18s ease}
@media(max-width:1100px){
  [data-theme="xuanqing"] .topbar .site-modes{justify-content:space-between;gap:.25rem}
  [data-theme="xuanqing"] .topbar .site-modes a{padding-left:.45rem;padding-right:.45rem;font-size:.94rem}
  [data-theme="xuanqing"] body[data-show-scene="true"] .xuanqing-scene{min-height:205px;padding:1.5rem}
}
@media(max-width:760px){
  [data-theme="xuanqing"] .topbar{padding:.7rem .8rem 0;gap:.5rem}
  [data-theme="xuanqing"] .header-tools{gap:.45rem;justify-content:flex-start}
  [data-theme="xuanqing"] .header-tools .text-size-control{width:auto;padding:.15rem;gap:.1rem;justify-content:flex-start}
  [data-theme="xuanqing"] .text-size-control .text-size-label{display:none}
  [data-theme="xuanqing"] .text-size-control button{font-size:.76rem;padding:.2rem .4rem;min-height:36px;min-width:0}
  [data-theme="xuanqing"] .topbar .site-modes{display:flex;flex-wrap:wrap;justify-content:flex-start;gap:0 .6rem;padding:0 .1rem;overflow:visible}
  [data-theme="xuanqing"] .topbar .site-modes a{flex:none;white-space:nowrap;min-height:2.9rem;font-size:.86rem;padding:.65rem .4rem .85rem;letter-spacing:0}
  [data-theme="xuanqing"] .topbar .site-modes a::after{left:.4rem;right:.4rem}
  [data-theme="xuanqing"] .brand-mark{width:1.9rem;height:1.9rem;background-size:1.75rem}
  [data-theme="xuanqing"] .brand strong{font-weight:550}
  [data-theme="xuanqing"] body[data-show-scene="true"] .xuanqing-scene{min-height:72px;padding:.6rem .85rem;background-position:67% center;margin-bottom:.65rem}
  [data-theme="xuanqing"] .scene-copy{max-width:100%}
  [data-theme="xuanqing"] .scene-title{font-size:1.2rem;letter-spacing:.05em;margin:0;line-height:1.6}
  [data-theme="xuanqing"] .scene-kicker{display:none}
  [data-theme="xuanqing"] .scene-note{display:none}
  [data-theme="xuanqing"] .xuanqing-scene::before{background:linear-gradient(90deg,#081018ef,#081018a8 53%,#08101833)}
  [data-theme="xuanqing"] .copyright-banner{padding-left:.65rem;font-size:.82rem}
  [data-theme="xuanqing"] .copyright-banner p{font-size:.82rem}
  [data-theme="xuanqing"] .copyright-banner .copyright-owner,[data-theme="xuanqing"] .copyright-reading-guide{display:none}
  [data-theme="xuanqing"] body[data-view="questions"][data-reading="false"] .reading-note{display:none}
  [data-theme="xuanqing"] body[data-view="questions"][data-reading="false"] .search-intro{display:none}
  [data-theme="xuanqing"] body[data-view="questions"][data-reading="false"] .content-heading{flex-direction:row;align-items:flex-end;gap:.6rem;padding-top:.25rem}
  [data-theme="xuanqing"] body[data-view="questions"][data-reading="false"] .content-heading .eyebrow{display:none}
  [data-theme="xuanqing"] body[data-view="questions"][data-reading="false"] .content-heading h1{font-size:1.25rem;line-height:1.7;margin:0}
  [data-theme="xuanqing"] body[data-view="questions"][data-reading="false"] #result-status{font-size:.8rem;line-height:1.7;margin:0}
  [data-theme="xuanqing"] .copyright-owner strong{font-size:.85rem}
  [data-theme="xuanqing"] .question-row-link{padding:.95rem 1.6rem .95rem .65rem}
  [data-theme="xuanqing"] .question-row h2{font-size:1rem}
}
@media(prefers-reduced-motion:reduce){
  [data-theme="xuanqing"] *,[data-theme="xuanqing"] *::before,[data-theme="xuanqing"] *::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}
@media(forced-colors:active){
  [data-theme="xuanqing"] .brand-mark{background:Canvas}
  [data-theme="xuanqing"] .brand-mark svg{visibility:visible}
  [data-theme="xuanqing"] .xuanqing-scene{background:Canvas}
  [data-theme="xuanqing"] .xuanqing-scene::before,[data-theme="xuanqing"] .xuanqing-scene::after{display:none}
  [data-theme="xuanqing"] .topbar .site-modes a{background:Canvas;color:LinkText;box-shadow:none}
  [data-theme="xuanqing"] .topbar .site-modes a[aria-current=page]{outline:2px solid Highlight}
}

/* Preview 6: restrained signal color; no bright text on pale legacy surfaces. */
[data-theme="xuanqing"]{--blue:#b4cbd7;--teal:#9ebfca;--title:#d4e0e8;--rule:#597281;--pg-bg:#121e28;--pg-label-bg:#182630;--pg-ink:#dbe5ec;--pg-edge:#8bb6c3;--pg-indirect:#9695ad;--pg-co:#708894;--pg-ring:#afc2cd;--pg-relation-ink:#bccfd9;--pg-node-a:#95b4c6;--pg-node-b:#c7b18b;--pg-node-c:#aeacc6;--pg-node-d:#a5bfae}
[data-theme="xuanqing"] .video-grid a{background:#1b2c39;color:#d9e4ec;border:1px solid #435e70;box-shadow:none;line-height:1.75;padding:.65rem .8rem}
[data-theme="xuanqing"] .video-grid a:hover{background:#263d4c;border-color:#86a6b7;color:#eff4f7}
[data-theme="xuanqing"] .video-grid .video-number,[data-theme="xuanqing"] .video-grid strong{color:#a9c7d4;font-weight:600}
[data-theme="xuanqing"] .video-grid small,[data-theme="xuanqing"] .video-grid span{color:#d9e4ec}
[data-theme="xuanqing"] .video-library{background:#16232e;border-color:#405765;color:#d9e4ec;box-shadow:none}
[data-theme="xuanqing"] .video-library p,[data-theme="xuanqing"] .video-library-note{color:#b4c3cf}
[data-theme="xuanqing"] .video-library a{color:#c2d8e2}
[data-theme="xuanqing"] .pg-controls button,[data-theme="xuanqing"] .pg-name-buttons button{color:#cedbe3;background:#1b2b37;border-color:#4c697a}
[data-theme="xuanqing"] .pg-controls button[aria-pressed=true]{color:#edf3f7;background:#315364;border-color:#9bbdcc}
[data-theme="xuanqing"] .pg-center-link{color:#d9e5eb;background:#243e4d;border-color:#6d8b9a}
[data-theme="xuanqing"] .pg-evidence{box-shadow:none;border-top:2px solid #86aeba}
[data-theme="xuanqing"] .pg-evidence h3,[data-theme="xuanqing"] .pg-evidence h4,[data-theme="xuanqing"] .pg-heading h2{color:#dce6ec;text-shadow:none}
[data-theme="xuanqing"] .pg-evidence p,[data-theme="xuanqing"] .pg-heading p,[data-theme="xuanqing"] .pg-guide{color:#b7c6d1}
[data-theme="xuanqing"] .pg-evidence a,[data-theme="xuanqing"] .pg-source a{color:#b8d6e2}
[data-theme="xuanqing"] .pg-relation-part>h4,[data-theme="xuanqing"] .pg-direction{color:#cad9e1}
[data-theme="xuanqing"] .topbar .site-modes{gap:.5rem;padding:.55rem 0 .65rem}
[data-theme="xuanqing"] .topbar .site-modes a{flex:1 1 0;text-align:center;min-height:2.9rem;padding:.7rem .6rem;border:1px solid #3f5565;border-radius:4px;background:#15222d;color:#bccad4;box-shadow:none;letter-spacing:.02em}
[data-theme="xuanqing"] .topbar .site-modes a::after{top:0;bottom:auto;left:16%;right:16%;height:2px;background:#a0c7d2;transform:scaleX(.55);opacity:.18;box-shadow:none;transition:none}
[data-theme="xuanqing"] .topbar .site-modes a:hover{background:#213644;border-color:#7995a5;color:#e1eaf0}
[data-theme="xuanqing"] .topbar .site-modes a[aria-current=page]{background:#213644;border:1px solid #89aebd;color:#e0ecf2;box-shadow:none}
[data-theme="xuanqing"] .topbar .site-modes a[aria-current=page]::after{top:0;bottom:auto;left:16%;right:16%;height:2px;background:#b5d5dc;opacity:1;transform:scaleX(1);box-shadow:0 1px 5px #9dd4df33}
[data-theme="xuanqing"] .sidebar a{color:#b7c7d3}
[data-theme="xuanqing"] .sidebar a[aria-current=page]{color:#e0e9ef}
[data-theme="xuanqing"] .pg-source blockquote,[data-theme="xuanqing"] .pg-indirect-path,[data-theme="xuanqing"] .pg-role-scope{background:#1a2b36;color:#d7e2e9;border-color:#687e8c}
[data-theme="xuanqing"] .pg-cross-source{background:#253747;color:#d3dee7}
@media(max-width:760px){
 [data-theme="xuanqing"] .topbar .site-modes{gap:.35rem;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));padding:.4rem 0 .5rem;width:100%}
 [data-theme="xuanqing"] .topbar .site-modes a{min-width:0;white-space:normal;font-size:.77rem;min-height:44px;padding:.5rem .25rem;line-height:1.55}
}

/* Preview 6 reference pass: original framing inspired by DataV display examples. */
[data-theme="xuanqing"] .topbar .site-modes a{
 border-radius:0;clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));
 background-image:linear-gradient(45deg,transparent 43%,#718e9e 45%,#718e9e 53%,transparent 55%),linear-gradient(45deg,transparent 43%,#718e9e 45%,#718e9e 53%,transparent 55%);
 background-size:8px 8px;background-repeat:no-repeat;background-position:top right,bottom left;
}
[data-theme="xuanqing"] .topbar .site-modes a:hover,
[data-theme="xuanqing"] .topbar .site-modes a[aria-current=page]{
 background-image:linear-gradient(45deg,transparent 43%,#aac5d1 45%,#aac5d1 53%,transparent 55%),linear-gradient(45deg,transparent 43%,#aac5d1 45%,#aac5d1 53%,transparent 55%);
 background-size:8px 8px;background-repeat:no-repeat;background-position:top right,bottom left;
}
[data-theme="xuanqing"] .topbar .site-modes a:focus-visible{outline:3px solid #d8c59f;outline-offset:-4px}
[data-theme="xuanqing"] .topbar .site-modes a[aria-current=page]::after{left:24%;right:24%;box-shadow:none}
[data-theme="xuanqing"] .sidebar .nav-count{color:#c8dbe6;font-family:ui-monospace,Consolas,monospace;font-variant-numeric:tabular-nums;font-size:.9em}
[data-theme="xuanqing"] .study-card{position:relative;border-radius:2px;overflow:hidden}
[data-theme="xuanqing"] .study-card::before,
[data-theme="xuanqing"] .study-card::after{content:"";position:absolute;display:block;width:9px;height:9px;opacity:0;pointer-events:none;background:none;transform:none;box-shadow:none;border:0;transition:opacity .18s ease}
[data-theme="xuanqing"] .study-card::before{left:5px;top:5px;right:auto;bottom:auto;border-left:1px solid #a5c5d0;border-top:1px solid #a5c5d0}
[data-theme="xuanqing"] .study-card::after{right:5px;bottom:5px;left:auto;top:auto;border-right:1px solid #a5c5d0;border-bottom:1px solid #a5c5d0}
[data-theme="xuanqing"] .study-card:hover::before,
[data-theme="xuanqing"] .study-card:hover::after,
[data-theme="xuanqing"] .study-card:focus-within::before,
[data-theme="xuanqing"] .study-card:focus-within::after{opacity:1}
[data-theme="xuanqing"] .study-number{font-family:ui-monospace,Consolas,monospace;font-variant-numeric:tabular-nums;letter-spacing:.04em;color:#b7ceda}
@media(prefers-reduced-motion:reduce){[data-theme="xuanqing"] .study-card::before,[data-theme="xuanqing"] .study-card::after{transition:none}}
@media(forced-colors:active){[data-theme="xuanqing"] .topbar .site-modes a{clip-path:none;background-image:none}[data-theme="xuanqing"] .study-card::before,[data-theme="xuanqing"] .study-card::after{display:none}}

/* CYBER_MECHANICAL_R9: static lighting, no flashing or continuous canvas animation. */
[data-theme="xuanqing"] body{background-image:radial-gradient(ellipse at 0 8%,#0a829c12,transparent 35%),radial-gradient(ellipse at 100% 40%,#65469b0c,transparent 35%)}
[data-theme="xuanqing"] .topbar{border-top-color:#72e3ee;box-shadow:inset 0 1px 0 #c3fbff44,0 -1px 9px #7beaff44,0 8px 25px #03101866}
[data-theme="xuanqing"] .topbar .site-modes a[aria-current=page]::after{background:linear-gradient(90deg,#77e5ee,#b1abff);box-shadow:0 0 6px #75e8f0aa,0 0 13px #51c5db55}
[data-theme="xuanqing"] .category-link[aria-current=page]{border-left-color:#79e5ed;box-shadow:inset 3px 0 0 #79e5ed,0 0 11px #4ec7de15}
[data-theme="xuanqing"] body .pg-stage{border-color:#5598a7;background-color:#101b27;background-image:radial-gradient(ellipse at 45% 50%,#0e5a6920,transparent 72%),linear-gradient(#53a6b00a 1px,transparent 1px),linear-gradient(90deg,#53a6b00a 1px,transparent 1px);background-size:100% 100%,36px 36px,36px 36px;box-shadow:inset 0 0 18px #32c4df0b,0 0 0 1px #193443,0 0 14px #34bcd914;border-radius:2px;--pg-edge:#89dce7;--pg-indirect:#c1b0ed;--pg-co:#7aa4b0}
[data-theme="xuanqing"] body .pg-stage::before,[data-theme="xuanqing"] body .pg-stage::after{border-color:#85edf3;border-width:2px 0 0 2px;filter:drop-shadow(0 0 3px #68ddeb88);width:20px;height:20px}
[data-theme="xuanqing"] body .pg-stage::after{border-width:0 2px 2px 0}
[data-theme="xuanqing"] body .pg-canvas-status{border-bottom:1px solid #467c8b;background:linear-gradient(90deg,#12303b,#14212d);box-shadow:0 1px 5px #61e3f028}
[data-theme="xuanqing"] body .pg-legend{border-top:1px solid #4c7582;box-shadow:0 -1px 6px #4dcde31c}
[data-theme="xuanqing"] body .pg-controls button:hover,[data-theme="xuanqing"] body .pg-controls button[aria-pressed=true]{border-color:#8ae3eb;box-shadow:inset 0 -2px #67d8e744,0 0 8px #58d3e332}
[data-theme="xuanqing"] body .pg-evidence{border-top:2px solid #65bfcf;box-shadow:inset 0 1px 6px #55cdd21a}
[data-theme="xuanqing"] .study-card{box-shadow:inset 0 1px #7ddbe322,0 3px 14px #0002}
[data-theme="xuanqing"] .study-card::before{background:linear-gradient(90deg,#71dbe8,#aba3ec);box-shadow:0 0 6px #62d5e855}
[data-theme="xuanqing"] .xuanqing-scene{border-top-color:#7ed6e1;box-shadow:inset 0 1px #99e8ef44,0 0 18px #55cde414}
@media(prefers-reduced-motion:reduce){[data-theme="xuanqing"] .topbar .site-modes a,[data-theme="xuanqing"] .pg-stage,[data-theme="xuanqing"] .study-card{animation:none!important;transition:none!important}}
@media(forced-colors:active){[data-theme="xuanqing"] body,[data-theme="xuanqing"] body .pg-stage{background-image:none}[data-theme="xuanqing"] .topbar,[data-theme="xuanqing"] body .pg-stage,[data-theme="xuanqing"] .study-card{box-shadow:none}}