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@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media(max-width:900px){.profile-menu{display:none!important}}
.avatar-button img{width:100%;height:100%;object-fit:cover;border-radius:50%}

/* Reader navigation: matched sticky side cards and compact mobile picker. */
body.picker-open{overflow:hidden}.mobile-picker-trigger,.picker-backdrop,.picker-sheet{display:none}.chapter-sticky,.toc-sticky{position:sticky;top:20px;max-height:calc(100vh - 40px);overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable}.chapter-sticky{margin-right:-5px;padding-right:5px}.chapter-sticky::-webkit-scrollbar,.toc-sticky::-webkit-scrollbar{width:5px}.chapter-sticky::-webkit-scrollbar-thumb,.toc-sticky::-webkit-scrollbar-thumb{border-radius:99px;background:#cad6e6}.chapter-tree{min-height:0}
@media(max-width:900px){.document-picker{display:block;margin:0 14px 12px;padding:6px;border-radius:16px}.document-picker>.picker-intro,.document-picker>.picker-controls,.document-picker>.picker-status{display:none}.mobile-picker-trigger{display:flex;width:100%;min-height:58px;align-items:center;gap:11px;padding:8px 12px;border:0;border-radius:12px;color:#536b8d;background:rgba(255,255,255,.9);text-align:left}.mobile-picker-trigger>svg:first-child{width:21px;flex:0 0 21px;color:#3979cf}.mobile-picker-trigger>svg:last-child{width:18px;flex:0 0 18px;margin-left:auto;color:#7c8da5}.mobile-picker-trigger>span{display:block;min-width:0;flex:1}.mobile-picker-trigger small,.mobile-picker-trigger strong{display:block}.mobile-picker-trigger small{margin-bottom:3px;color:#8695aa;font-size:9px;font-weight:800;letter-spacing:.08em}.mobile-picker-trigger strong{overflow:hidden;color:#173461;font-size:13px;text-overflow:ellipsis;white-space:nowrap}.picker-backdrop{display:block;position:fixed;z-index:80;inset:0;background:rgba(15,31,55,.42);backdrop-filter:blur(3px)}.picker-sheet{display:grid;position:fixed;z-index:90;right:10px;bottom:max(10px,env(safe-area-inset-bottom));left:10px;max-height:min(76vh,680px);grid-template-rows:auto minmax(0,1fr) auto;overflow:hidden;border:1px solid rgba(255,255,255,.7);border-radius:22px;background:#fff;box-shadow:0 28px 80px rgba(21,42,76,.3);animation:sheetIn .22s ease-out}.picker-sheet header{display:flex;align-items:center;justify-content:space-between;padding:18px 18px 14px;border-bottom:1px solid var(--line)}.picker-sheet header p{margin:0 0 3px;color:#7790b7;font-size:8px;font-weight:800;letter-spacing:.18em}.picker-sheet header h2{margin:0;color:var(--ink);font-size:19px}.picker-sheet header button{display:grid;width:44px;height:44px;padding:0;place-items:center;border:0;border-radius:50%;color:#60728c;background:#edf2f8}.mobile-picker-grid{display:grid;min-height:0;grid-template-columns:1fr 1fr;overflow:hidden}.mobile-picker-column{min-width:0;padding:14px 10px 18px;overflow-y:auto;overscroll-behavior:contain}.mobile-picker-column+.mobile-picker-column{border-left:1px solid var(--line)}.mobile-picker-column h3{position:sticky;z-index:1;top:-14px;margin:-14px -10px 8px;padding:14px 12px 9px;color:#8390a3;background:#fff;font-size:10px;letter-spacing:.08em}.mobile-picker-options{display:grid;gap:7px}.mobile-picker-options button{display:flex;width:100%;min-height:48px;align-items:center;justify-content:space-between;gap:5px;padding:8px 10px;border:1px solid transparent;border-radius:11px;color:#62738c;background:#f6f8fb;text-align:left}.mobile-picker-options button span{min-width:0;overflow:hidden;font-size:12px;font-weight:700;text-overflow:ellipsis;white-space:nowrap}.mobile-picker-options button small{flex:0 0 auto;color:#91a0b4;font-size:9px}.mobile-picker-options button.active{border-color:#72a0df;color:#174d9e;background:#eaf2ff;box-shadow:inset 0 0 0 1px rgba(57,121,207,.1)}.picker-sheet footer{display:flex;min-height:68px;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px max(10px,env(safe-area-inset-bottom));border-top:1px solid var(--line);background:#fff}.picker-sheet footer span{color:#8290a4;font-size:11px}.picker-sheet footer button{min-width:126px;min-height:46px;padding:0 16px;border:0;border-radius:11px;color:#fff;background:var(--primary);font-weight:800}.picker-sheet footer button:disabled{cursor:not-allowed;opacity:.42}.chapter-sticky,.toc-sticky{position:static;max-height:none;overflow:visible}}
@media(max-width:430px){.document-picker{margin-inline:8px;padding:5px}.picker-sheet{right:6px;bottom:max(6px,env(safe-area-inset-bottom));left:6px}.mobile-picker-column{padding-inline:8px}.mobile-picker-options button{padding-inline:8px}}

/* Multi-level chapter navigation and H1-H6 article outline */
.collection-group.active>.collection-documents{display:block}.chapter-subject-group>strong{display:block;margin:16px 9px 8px;color:#7c8da4;font-size:9px;letter-spacing:.08em}.chapter-subject-group:first-child>strong{margin-top:0}.collection-documents>.collection-group{margin:3px 0 3px 5px}.collection-documents>.collection-group>.collection-button{min-height:38px;font-size:12px}.toc-list a[class*="toc-level-"]{margin-left:min(calc(var(--toc-depth,0) * 8px),32px)}.toc-list a.toc-level-2,.toc-list a.toc-level-3,.toc-list a.toc-level-4,.toc-list a.toc-level-5,.toc-list a.toc-level-6{min-height:40px;border-style:dashed}
.document-content h1{scroll-margin-top:88px;margin:44px 0 18px;color:#102d57;font-size:29px;line-height:1.4}.document-content h4,.document-content h5,.document-content h6{scroll-margin-top:88px}.document-content h5{margin:22px 0 9px;color:#405b78;font-size:15px}.document-content h6{margin:20px 0 8px;color:#49627d;font-size:14px}.document-content blockquote.note-callout{border-left-width:5px;border-left-color:#82a9dc;background:#eef5fd;font-weight:600}
@media(max-width:900px){.document-content h1{scroll-margin-top:72px;font-size:26px}}
.collection-group:not(.active)>.collection-documents{display:none!important}
.document-content,.document-content p,.document-content li{line-height:1.5}