#hc-app{--bg:light-dark(#f7f5f0,#242325);--panel:light-dark(#fffdf9,#2d2c2e);--fg:light-dark(#302e32,#ebe7e0);--muted:light-dark(#6e6972,#b8b0be);--edge:light-dark(#ddd8df,#49424e);--accent:light-dark(#70577e,#b5a1c2);--soft:light-dark(#ece5ef,#43384a);background:var(--bg);color:var(--fg);font:14px/1.5 system-ui;border-radius:12px;overflow:hidden}
#hc-app *{box-sizing:border-box}#hc-app header{padding:24px 26px 20px;border-bottom:1px solid var(--edge)}#hc-app .kicker{font-size:11px;letter-spacing:1.8px;text-transform:uppercase;color:var(--muted)}#hc-app h1{font:normal 28px/1.2 Georgia,serif;margin:8px 0}#hc-app .muted{color:var(--muted);font-size:12px}#hc-app button{font:12px system-ui;background:var(--panel);color:var(--fg);border:1px solid var(--edge);padding:8px 11px;border-radius:6px;min-height:34px}#hc-app button:hover{background:var(--soft)}#hc-app button:disabled{opacity:.4}#hc-app button:focus-visible,#hc-app input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}#hc-app .toolbar{display:flex;gap:7px;flex-wrap:wrap;align-items:center;padding:14px 22px}#hc-app .space{flex:1}#hc-app .readout{font-size:12px;font-variant-numeric:tabular-nums;padding:0 5px}#hc-app .categories{padding:17px 22px;background:var(--panel);border-top:1px solid var(--edge);border-bottom:1px solid var(--edge)}#hc-app .choices{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:9px;margin:12px 0}#hc-app .choices label{display:flex;gap:8px;align-items:center;font-size:12px;min-height:30px}#hc-app input{accent-color:var(--accent)}#hc-app .row{display:grid;grid-template-columns:190px minmax(0,1fr);border-bottom:1px solid var(--edge)}#hc-app .row-title{padding:14px 16px;border-right:1px solid var(--edge);background:var(--bg);font-size:12px;display:flex;flex-direction:column;justify-content:center;gap:9px}#hc-app .actions{display:flex;gap:5px;flex-wrap:wrap}#hc-app .actions button{padding:3px 7px;min-height:26px;font-size:11px}#hc-app .axis{height:42px;position:relative;margin:0 14px;color:var(--muted);font-size:11px}#hc-app .tick{position:absolute;top:13px;white-space:nowrap;transform:translateX(-50%)}#hc-app .lane{position:relative;margin:0 14px;background-image:linear-gradient(to right,var(--edge) 1px,transparent 1px);background-size:25% 100%;touch-action:pan-y}#hc-app .mark{position:absolute;height:5px;background:var(--accent);border-radius:1px;pointer-events:none}#hc-app .point{width:8px;height:8px;border-radius:50%;transform:translateX(-50%)}#hc-app .event{position:absolute;max-width:230px;background:transparent;border:0;padding:7px 0;min-height:40px;text-align:left;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border-radius:0;font-size:12px}#hc-app .event:hover{background:var(--soft)}#hc-app .event small{display:block;color:var(--muted);font-size:11px}#hc-app .empty{padding:24px;color:var(--muted);font-size:12px}#hc-app .navigator{display:flex;gap:12px;align-items:center;padding:15px 22px}#hc-app .navigator input{flex:1;min-width:40px}#hc-app footer{padding:0 22px 16px;font-size:11px;color:var(--muted);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}#hc-app .notes,#hc-app .terms{padding:22px 26px;background:var(--panel);border-top:1px solid var(--edge)}#hc-app h2{font:normal 23px Georgia,serif;margin:7px 0}#hc-app p{max-width:730px}#hc-app .notes a{color:var(--accent)}#hc-app .close{float:right}#hc-app dl{display:grid;grid-template-columns:140px 1fr;gap:14px;font-size:13px}#hc-app dd{margin:0;color:var(--muted)}#hc-app [hidden]{display:none!important}@media(max-width:560px){#hc-app .row{grid-template-columns:125px minmax(0,1fr)}#hc-app .row-title{padding:10px 8px}#hc-app header{padding:18px}#hc-app .toolbar{padding:12px}#hc-app .readout{width:100%;order:2}#hc-app .event{max-width:150px}#hc-app dl{grid-template-columns:1fr;gap:5px}#hc-app .actions{flex-wrap:wrap}}















/* Keep browser scroll anchoring from competing with category-aware positioning. */
#hc-board{overflow-anchor:none}
#hc-position{touch-action:pan-x}



/* DATE KINDS */
#hc-app .event.date-window.duration{background:repeating-linear-gradient(135deg,var(--soft) 0px,var(--soft) 5px,var(--panel) 5px,var(--panel) 10px);border:1px dashed var(--accent)}
#hc-app .mark.date-window{height:7px;background:repeating-linear-gradient(135deg,var(--accent) 0px,var(--accent) 3px,transparent 3px,transparent 6px);border:1px dashed var(--accent)}
#hc-app .mark.date-approximate{background:var(--bg);border:2px solid var(--accent);height:9px;width:9px}
#hc-app .event.date-window.duration.selected{outline:2px solid var(--accent);outline-offset:2px}
/* END DATE KINDS */


#hc-app .reference{background:var(--panel);border-block:1px solid var(--edge);padding:18px 22px;max-height:420px;overflow:auto;overscroll-behavior:contain}#hc-app .reference-head{display:flex;align-items:center;justify-content:space-between;gap:12px}#hc-app .reference h2{margin:0}#hc-app .reference details{border-top:1px solid var(--edge);padding:12px 0}#hc-app .reference summary{font-size:14px;cursor:pointer}#hc-app .reference summary small{display:block;padding-left:18px;font-size:11px;color:var(--muted)}#hc-app .reference dl{grid-template-columns:110px 1fr;margin:16px 0 6px;gap:10px}#hc-app .reference a{color:var(--accent)}#hc-app .reference .intro{font-size:12px;color:var(--muted);margin:10px 0 16px}#hc-app .symbol{display:inline-block;width:32px;vertical-align:middle;color:var(--accent);font-size:18px}#hc-app .reference-list{margin:12px 0}#hc-app .reference-list div{padding:8px 0;font-size:13px}@media(max-width:500px){#hc-app .reference dl{grid-template-columns:1fr;gap:4px}#hc-app .reference dd{margin-bottom:10px}}


#hc-app select{font:12px system-ui;color:var(--fg);background:var(--panel);border:1px solid var(--edge);border-radius:6px;padding:8px}#hc-app[data-density="compact"] .row-title{padding-top:6px;padding-bottom:6px;gap:4px}#hc-app .focus-strip{padding:0 22px 12px;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted)}#hc-app .study{display:flex;align-items:stretch;border-top:1px solid var(--edge)}#hc-app .chart-area{flex:1;min-width:0}#hc-app #hc-board{max-height:460px;overflow-y:auto;overflow-x:hidden}#hc-app .notes{width:320px;flex:none;height:460px;overflow-y:auto;overscroll-behavior:contain;padding:20px;border:0;overflow-wrap:anywhere}#hc-app .splitter{width:9px;flex:none;padding:0;border:0;border-left:1px solid var(--edge);border-right:1px solid var(--edge);border-radius:0;background:var(--soft);cursor:col-resize;touch-action:none}#hc-app .event.selected{background:var(--soft);box-shadow:0 0 0 2px var(--accent);border-radius:3px}#hc-app .focus-line{position:absolute;top:0;bottom:0;width:1px;background:var(--accent);opacity:.45;pointer-events:none}#hc-app .notes h3{font-size:13px;margin:24px 0 8px}#hc-app .notes p{font-size:13px}#hc-app .notes .close{float:none;margin-bottom:12px}#hc-app .study.has-notes .row{grid-template-columns:140px minmax(0,1fr)}#hc-app .study.has-notes .row-title{padding:10px}#hc-app .event{max-width:min(230px,100%)}@media(max-width:700px){#hc-app .study{flex-direction:column}#hc-app .notes{width:100%!important;height:320px;border-top:1px solid var(--edge)}#hc-app .splitter{display:none}#hc-app .study.has-notes .row{grid-template-columns:125px minmax(0,1fr)}}


#hc-app .event.duration{height:30px;min-height:30px;background:var(--soft);padding:5px 8px;border-radius:4px;color:var(--fg)}
#hc-app .event.duration.selected{background:var(--accent);color:var(--bg)}
#hc-app #hc-board>.row:first-child{position:sticky;top:0;z-index:3;background:var(--bg)}
#hc-app .event:not(.duration){min-height:36px;padding:1px 0}
#hc-app .event span{display:block;overflow:hidden;text-overflow:ellipsis}
/* Chronos Arc: ivory paper, charcoal ink, plum interaction; gold is ornamental. */
:root{color-scheme:light;--arc-paper:#f5f0e5;--arc-reading:#fffcf5;--arc-ink:#302c2c;--arc-muted:#655c56;--arc-plum:#512f50;--arc-plum-hover:#442641;--arc-plum-wash:#ebe2e9;--arc-rule:#d5cbbd;--arc-control:#877969;--arc-gold:#a1844d;background:var(--arc-paper);color:var(--arc-ink);font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-synthesis:none}
html,body{margin:0;min-width:320px}body{background:var(--arc-paper)}a{color:var(--arc-plum);text-underline-offset:3px;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}button,a,input,select{-webkit-tap-highlight-color:transparent}a:focus-visible,summary:focus-visible{outline:3px solid var(--arc-plum);outline-offset:3px;border-radius:2px}::selection{background:var(--arc-plum);color:var(--arc-reading)}
.arc-skip{position:fixed;left:16px;top:-65px;z-index:20;background:var(--arc-plum);color:var(--arc-reading);padding:12px 18px;border-radius:3px}.arc-skip:focus{top:12px}
#hc-app{--bg:var(--arc-paper);--panel:var(--arc-reading);--fg:var(--arc-ink);--muted:var(--arc-muted);--edge:var(--arc-rule);--accent:var(--arc-plum);--soft:var(--arc-plum-wash);border-radius:0;min-height:100dvh;max-width:1920px;margin:auto;overflow:clip;font:14px/1.55 ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}

.arc-brand{display:inline-flex;align-items:center;gap:10px;font-size:11px;letter-spacing:2.8px;text-decoration:none;color:var(--arc-plum);font-weight:650}.arc-brand-mark{font-size:27px;line-height:1;letter-spacing:0;color:var(--arc-gold)}
#hc-app .kicker,.arc-document .kicker{font-size:11px;letter-spacing:1.5px;color:var(--arc-muted)}
.arc-preview{border:1px solid var(--arc-rule);border-left:3px solid var(--arc-gold);padding:3px 8px;background:var(--arc-reading);color:var(--arc-ink);letter-spacing:.2px}
/* Plain controls; selected and expanded states use plum with ivory text. */
#hc-app .toolbar{padding:12px 30px;gap:8px}#hc-app .toolbar+.toolbar{padding-bottom:13px}
#hc-app button,#hc-app select{background:var(--arc-reading);color:var(--arc-ink);border-color:var(--arc-control);min-height:36px;border-radius:3px;font-size:12px;box-shadow:none;transition:background-color .12s,border-color .12s}
#hc-app button:not(:disabled),#hc-app select{cursor:pointer}#hc-app button:hover:not(:disabled),#hc-app select:hover{background:var(--arc-plum-wash);border-color:var(--arc-plum);color:var(--arc-plum)}#hc-app button:disabled{opacity:.48;cursor:default}
#hc-app button[aria-expanded="true"],#hc-app button[aria-pressed="true"],#hc-app #hc-unfocus{background:var(--arc-plum);border-color:var(--arc-plum);color:var(--arc-reading)}
#hc-app button[aria-expanded="true"]:hover,#hc-app button[aria-pressed="true"]:hover,#hc-app #hc-unfocus:hover{background:var(--arc-plum-hover);color:var(--arc-reading)}
#hc-app button:focus-visible,#hc-app input:focus-visible,#hc-app select:focus-visible{outline:3px solid var(--arc-plum);outline-offset:3px}
#hc-app #hc-plus,#hc-app #hc-minus{font-size:18px;min-width:38px;padding:3px 10px}#hc-app #hc-categories{font-weight:600}#hc-app .readout{color:var(--arc-ink);font-size:12px}#hc-app .focus-strip{padding:0 30px 12px;color:var(--arc-muted);min-height:30px}#hc-app .focus-strip:has(#hc-unfocus:not([hidden])) #hc-focus-label{color:var(--arc-plum);font-weight:600}
/* Source-controlled category geometry and independent scroll areas. */
#hc-app .study{margin:0 18px;border:1px solid var(--arc-rule);border-radius:4px;overflow:hidden;background:var(--arc-reading)}#hc-app #hc-board{height:calc(100dvh - 352px);min-height:340px;max-height:none;scrollbar-color:#8b777f #eee7da}
#hc-app .row-title{background:#eee7db;border-right-color:var(--arc-rule)}#hc-app .row-title>span{font-weight:600;color:var(--arc-ink)}#hc-app #hc-board>.row:first-child{background:#eee7db;border-bottom-color:#b6a58b}#hc-app .axis{color:var(--arc-muted)}#hc-app .lane{background-image:linear-gradient(to right,#e3dacf 1px,transparent 1px)}#hc-app .actions{gap:5px}#hc-app .actions button{background:var(--arc-reading);border-color:var(--arc-control);min-height:28px;font-size:11px;border-radius:3px}
#hc-app .event{background:transparent;color:var(--arc-ink);border-radius:2px}#hc-app .event small{color:var(--arc-muted)}#hc-app .event.duration{background:var(--arc-plum-wash);border:1px solid #8a7187;color:var(--arc-ink);border-radius:3px}#hc-app .event:hover:not(:disabled){background:#e2d5df;color:var(--arc-ink)}
#hc-app .event.date-window.duration{background:repeating-linear-gradient(135deg,#ebe2e9 0px,#ebe2e9 5px,#fffcf5 5px,#fffcf5 10px);border:1px dashed var(--arc-plum)}
#hc-app .event.selected,#hc-app .event.selected:hover,#hc-app .event.duration.selected,#hc-app .event.duration.selected:hover{background:var(--arc-plum);color:var(--arc-reading);box-shadow:0 0 0 2px var(--arc-plum);border-color:var(--arc-plum)}#hc-app .event.selected small{color:var(--arc-reading)}#hc-app .event.date-window.duration.selected{background:repeating-linear-gradient(135deg,#512f50 0px,#512f50 5px,#684365 5px,#684365 10px);outline-color:var(--arc-plum)}
#hc-app .focus-line{background:var(--arc-plum);opacity:1}#hc-app .mark.date-approximate{background:var(--arc-reading)}#hc-app .navigator{padding:14px 26px 9px}#hc-app .navigator input{cursor:ew-resize;accent-color:var(--arc-plum)}#hc-app footer{padding:0 28px 12px;color:var(--arc-muted)}
/* Long notes and citations: readable text, clear links, generous leading. */
#hc-app .notes{height:calc(100dvh - 352px);min-height:340px;background:var(--arc-reading);padding:22px;scrollbar-color:#8b777f #eee7da}#hc-app .notes h2{font-family:Georgia,"Times New Roman",serif;color:var(--arc-ink);font-size:25px;line-height:1.3;margin:12px 0}#hc-app .notes p{font-size:14px;line-height:1.75;margin:16px 0;color:var(--arc-ink)}#hc-app .notes .kicker{margin-top:15px;line-height:1.6;color:var(--arc-muted)}#hc-app .notes .muted{font-size:12px;line-height:1.6}#hc-app .notes h3{color:var(--arc-plum);font-size:13px;line-height:1.5;border-top:1px solid var(--arc-rule);padding-top:19px;margin-top:24px}#hc-app .notes a{color:var(--arc-plum);text-decoration:underline;text-underline-offset:3px;overflow-wrap:anywhere}#hc-app .notes .close{margin-bottom:6px}#hc-app .notes .arc-copy{margin-left:7px}#hc-app .arc-copy-fallback{font-size:12px;margin-left:10px}#hc-app .notes details{margin-top:15px;padding:12px 0;border-top:1px solid var(--arc-rule);font-size:13px}#hc-app .notes summary{cursor:pointer;color:var(--arc-plum)}#hc-app .splitter{background:#e3dacf;border-color:#877969;border-radius:0}#hc-app .splitter:hover{background:#b8a1b2}
/* Reference drawers share the reading-surface treatment. */
#hc-app .reference,#hc-app .categories{background:var(--arc-reading);border-color:var(--arc-rule);padding:20px 30px;max-height:45vh;overflow:auto;overscroll-behavior:contain;scrollbar-color:#8b777f #eee7da}#hc-app .reference h2,#hc-app .categories h2{font-size:25px;color:var(--arc-ink)}#hc-app .choices{gap:12px 24px}#hc-app .choices label{font-size:13px;color:var(--arc-ink)}#hc-app .choices input{min-width:17px;min-height:17px;accent-color:var(--arc-plum)}#hc-app .choices label:has(input:checked){color:var(--arc-plum);font-weight:600}#hc-app .choices label:has(input:focus-visible){outline:2px solid var(--arc-plum);outline-offset:4px;border-radius:2px}
#hc-app .reference-head,#hc-app .categories>div:first-child{position:sticky;top:-20px;background:var(--arc-reading);padding:8px 0;z-index:2}#hc-app .reference details{border-color:var(--arc-rule)}#hc-app .reference details[open]>summary{color:var(--arc-plum);font-weight:600}#hc-app .reference p,#hc-app .reference dd,#hc-app .categories dd{line-height:1.75;font-size:14px}#hc-app .reference .intro,#hc-app .reference summary small{color:var(--arc-muted)}#hc-app .reference-list div{padding:11px 0;border-bottom:1px solid var(--arc-rule)}#hc-app .reference a{color:var(--arc-plum)}
.arc-bottom{border-top:1px solid var(--arc-rule);display:flex;justify-content:space-between;gap:14px;padding:13px 30px;font-size:11px;color:var(--arc-muted)}.arc-bottom a{color:var(--arc-plum)}.arc-noscript{padding:30px;background:var(--arc-reading);max-width:700px;margin:30px auto}
.arc-document{max-width:1040px;margin:0 auto;padding:28px 32px;border-top:3px solid var(--arc-gold)}.arc-document nav{display:flex;justify-content:space-between;gap:20px;align-items:center;padding-bottom:24px;border-bottom:1px solid var(--arc-rule)}.arc-document nav>a:last-child{font-size:13px}.arc-document main{max-width:740px;margin:55px auto}.arc-document h1{font:400 clamp(36px,5vw,56px)/1.12 Georgia,serif;letter-spacing:-1px;margin:14px 0 28px;color:var(--arc-ink)}.arc-document .arc-lead{font-size:19px;line-height:1.75;color:var(--arc-ink)}.arc-document section{margin-top:36px;padding-top:12px;border-top:1px solid var(--arc-rule)}.arc-document h2{font:400 25px/1.3 Georgia,serif;color:var(--arc-plum)}.arc-document p{line-height:1.85;font-size:16px;color:var(--arc-ink)}.arc-return{display:inline-block;padding:12px 20px;background:var(--arc-plum);color:var(--arc-reading);border:1px solid var(--arc-plum);border-radius:3px;text-decoration:none;margin-top:28px}.arc-return:hover{background:var(--arc-plum-hover)}.arc-document footer{border-top:1px solid var(--arc-rule);padding:20px 0;font-size:12px;color:var(--arc-muted)}
@media(min-width:1440px){#hc-app .row{grid-template-columns:215px minmax(0,1fr)}#hc-app .study.has-notes .row{grid-template-columns:185px minmax(0,1fr)}}
@media(max-width:900px){#hc-app .toolbar,#hc-app .focus-strip{padding-left:20px;padding-right:20px}#hc-app .study{margin:0 10px}.arc-bottom{padding:13px 20px;flex-wrap:wrap}}
@media(max-width:700px){#hc-app #hc-board{height:55dvh;min-height:340px}#hc-app .notes{height:48dvh;min-height:260px;max-height:none;width:100%!important;border-top:1px solid var(--arc-control)}#hc-app .row,#hc-app .study.has-notes .row{grid-template-columns:135px minmax(0,1fr)}#hc-app .row-title{padding:12px 9px}#hc-app .reference,#hc-app .categories{padding:16px 18px;max-height:52dvh}#hc-app .choices{grid-template-columns:1fr}.arc-document{padding:23px 20px}.arc-document main{margin:40px auto}.arc-document nav{flex-wrap:wrap}.arc-document .arc-lead{font-size:17px}}
/* Keep navigation within the desktop window and notes independently scrollable. */
@media(min-width:701px){#hc-app{height:100dvh;min-height:620px;display:flex;flex-direction:column;overflow:auto}#hc-app .toolbar{padding-top:10px;padding-bottom:9px;flex:none}#hc-app .toolbar+.toolbar{padding-bottom:10px}#hc-app .focus-strip{padding-bottom:10px;min-height:26px;flex:none}#hc-app .study{flex:1 1 auto;min-height:170px}#hc-app .chart-area{display:flex;flex-direction:column;min-height:0}#hc-app #hc-board{flex:1;height:100%;min-height:0;max-height:none}#hc-app .notes{height:100%;min-height:0}#hc-app .navigator{padding-top:11px;padding-bottom:7px;flex:none}#hc-app footer{padding-bottom:8px;flex:none}#hc-app .arc-bottom{padding-top:9px;padding-bottom:9px;flex:none}#hc-app .reference,#hc-app .categories{flex:0 1 auto;max-height:34vh}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}


/* Compact introduction band. These rules affect the header only. */
#hc-app .arc-header{display:grid;grid-template-columns:172px minmax(240px,.9fr) minmax(260px,1.2fr) max-content;align-items:center;gap:24px;padding:14px 28px;flex:none;background:var(--arc-paper);border-top:3px solid var(--arc-gold);border-bottom:1px solid var(--arc-rule)}
#hc-app .arc-header>*{min-width:0}
#hc-app .arc-header .arc-identity{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
#hc-app .arc-header .arc-brand{font-size:11px;letter-spacing:2.7px;gap:9px;white-space:nowrap}
#hc-app .arc-header .arc-brand-mark{font-size:23px}
#hc-app .arc-header .arc-preview{font-size:11px;line-height:1.55;white-space:nowrap}
#hc-app .arc-header .arc-heading{display:contents;margin:0}
#hc-app .arc-header .kicker{display:none}
#hc-app .arc-header h1{font:400 30px/1.18 Georgia,"Times New Roman",serif;letter-spacing:-.6px;color:var(--arc-ink);margin:0;text-wrap:balance}
#hc-app .arc-header .arc-intro{font-size:12px;line-height:1.55;color:var(--arc-muted);max-width:none;margin:0;text-wrap:pretty}
#hc-app .arc-header .arc-collection{display:flex;flex-direction:column;align-items:flex-start;gap:3px;margin:0;padding-left:24px;border-left:1px solid var(--arc-rule);font-size:11px;line-height:1.55;color:var(--arc-muted)}
#hc-app .arc-header .arc-counts{display:flex;flex-wrap:wrap;gap:4px 16px;color:var(--arc-ink)}
#hc-app .arc-header .arc-counts>span{white-space:nowrap}
#hc-app .arc-header .arc-method{display:inline-flex;align-items:center;gap:8px;min-height:26px;padding:0;margin:0;font-size:12px;line-height:1.5;color:var(--arc-plum)}
#hc-app .arc-header .arc-method span{margin:0}
@media(min-width:701px) and (max-width:1099px){
 #hc-app .arc-header{grid-template-columns:minmax(0,1fr) max-content;gap:10px 24px;padding:12px 20px}
 #hc-app .arc-header .arc-identity{grid-column:1/-1;flex-direction:row;align-items:center;gap:18px}
 #hc-app .arc-header .arc-heading{display:block}
 #hc-app .arc-header h1{font-size:28px;margin:0 0 5px}
 #hc-app .arc-header .arc-collection{padding-left:20px}
}
@media(max-width:700px){
 #hc-app .arc-header{grid-template-columns:minmax(0,1fr);gap:10px;padding:12px 18px}
 #hc-app .arc-header .arc-identity{flex-direction:row;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
 #hc-app .arc-header .arc-brand{letter-spacing:2.2px;gap:7px}
 #hc-app .arc-header .arc-heading{display:block}
 #hc-app .arc-header .kicker{display:block;font-size:10px;line-height:1.5;letter-spacing:.7px;margin-bottom:4px}
 #hc-app .arc-header h1{font-size:27px;line-height:1.18;margin-bottom:5px;text-wrap:initial}
 #hc-app .arc-header .arc-intro{font-size:12px}
 #hc-app .arc-header .arc-collection{display:grid;grid-template-columns:minmax(0,1fr);gap:2px;padding:0;border:0}
 #hc-app .arc-header .arc-evidence-summary{grid-row:3}
 #hc-app .arc-header .arc-method{justify-self:start;min-height:28px}
}
@media(min-width:480px) and (max-width:700px){
 #hc-app .arc-header .arc-collection{grid-template-columns:minmax(0,1fr) max-content;align-items:center;gap:2px 12px}
 #hc-app .arc-header .arc-evidence-summary{grid-row:2;grid-column:1/-1}
 #hc-app .arc-header .arc-method{grid-column:2;grid-row:1}
}

/* Working controls: three related groups, independent of the header and lanes. */
#hc-app .arc-work-toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:10px 18px;padding:10px 28px 8px}
#hc-app .arc-work-toolbar .arc-control-group{display:flex;align-items:center;flex-wrap:wrap;gap:6px;min-width:0;flex:1 1 auto}
#hc-app .arc-work-toolbar .arc-view-controls,#hc-app .arc-work-toolbar .arc-reference-controls{border-left:1px solid var(--arc-rule);padding-left:18px}
#hc-app .arc-work-toolbar .arc-reference-controls{flex-grow:0}
#hc-app .arc-work-toolbar button,#hc-app .arc-work-toolbar select{white-space:nowrap;min-height:38px;padding:7px 10px}
#hc-app .arc-work-toolbar .arc-zoom-controls{display:flex;align-items:center;gap:4px;flex:none}
#hc-app .arc-work-toolbar #hc-minus,#hc-app .arc-work-toolbar #hc-plus{width:38px;height:38px;padding:3px 8px}
#hc-app .arc-work-toolbar .readout{width:auto;order:0;flex:none;padding:0 2px;font-size:12px;line-height:1.5;white-space:nowrap}
#hc-app .arc-work-toolbar .arc-spacing-control{display:flex;align-items:center;gap:6px;flex:none;margin-left:4px}
#hc-app .arc-work-toolbar .arc-spacing-control label{white-space:nowrap}
#hc-app .focus-strip{flex-wrap:wrap;gap:6px 10px}
#hc-app #hc-focus-label{min-width:0;overflow-wrap:anywhere}
#hc-app #hc-unfocus{flex:none}
@media(min-width:701px) and (max-width:1199px){
 #hc-app .arc-work-toolbar{padding-left:20px;padding-right:20px;gap:8px 16px}
 #hc-app .arc-work-toolbar .arc-control-group{flex-grow:0}
 #hc-app .arc-work-toolbar .arc-reference-controls{flex-basis:100%;padding:8px 0 0;border-left:0;border-top:1px solid var(--arc-rule)}
}
@media(max-width:767px){
 #hc-app .arc-work-toolbar .arc-control-group{flex-basis:100%;border-left:0;padding-left:0}
 #hc-app .arc-work-toolbar .arc-view-controls,#hc-app .arc-work-toolbar .arc-reference-controls{padding-top:8px;border-top:1px solid var(--arc-rule)}
}
@media(max-width:700px){
 #hc-app .arc-work-toolbar{padding:10px 18px 8px;gap:8px}
 #hc-app .arc-work-toolbar button,#hc-app .arc-work-toolbar select{min-height:40px}
 #hc-app .arc-work-toolbar #hc-minus,#hc-app .arc-work-toolbar #hc-plus{width:40px;height:40px}
 #hc-app .arc-work-toolbar .readout{flex-basis:100%;padding:0;line-height:1.6}
 #hc-app .arc-work-toolbar .arc-spacing-control{margin-left:0}
}

/* Temporary tools use the viewport; they never take height from the timeline. */
html.arc-tools-open,html.arc-tools-open body{overflow:hidden}
#hc-app .arc-tool-dialog{position:fixed;inset:0;margin:auto;width:min(1040px,calc(100% - 48px));max-width:calc(100% - 48px);max-height:calc(100dvh - 48px);padding:0;border:1px solid var(--arc-control);border-top:3px solid var(--arc-gold);border-radius:5px;background:var(--arc-reading);color:var(--arc-ink);box-shadow:0 18px 70px #302c2c40;overflow:hidden}
#hc-app .arc-tool-dialog[open]{display:flex;flex-direction:column}
#hc-app .arc-tool-dialog::backdrop{background:#302c2c66}
#hc-app .arc-tool-dialog .arc-tool-panel{display:flex;flex-direction:column;flex:1 1 auto;min-height:0;max-height:none;width:100%;padding:0;border:0;overflow:hidden;background:var(--arc-reading)}
#hc-app .arc-tool-dialog .arc-tool-panel>.arc-tool-head{position:relative;top:auto;display:flex;flex:none;align-items:center;justify-content:space-between;gap:12px;padding:18px 24px;border-bottom:1px solid var(--arc-rule);background:var(--arc-reading)}
#hc-app .arc-tool-dialog .arc-tool-title{font:400 26px/1.25 Georgia,"Times New Roman",serif;color:var(--arc-ink);letter-spacing:0;text-transform:none;margin:0;min-width:0;overflow-wrap:anywhere}
#hc-app .arc-tool-dialog .arc-tool-title:focus{outline:none}
#hc-app .arc-tool-dialog .arc-tool-head>div:has(button){display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}
#hc-app .arc-tool-dialog .arc-tool-head button{flex:none;min-height:40px;font-size:13px;padding:8px 12px}
#hc-app .arc-tool-dialog .arc-tool-body{flex:0 1 auto;min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;padding:20px 24px 24px;scrollbar-color:#8b777f #eee7da;scroll-padding:12px}
#hc-app .arc-tool-dialog .arc-tool-body p{max-width:78ch;font-size:14px;line-height:1.65;margin:8px 0 16px;overflow-wrap:anywhere}
#hc-app .arc-tool-dialog .arc-tool-body a{overflow-wrap:anywhere}
#hc-app .arc-tool-dialog .arc-tool-body dl{margin:0;gap:15px 24px;font-size:14px}
#hc-app .arc-tool-dialog .arc-tool-body dt{font-weight:600}
#hc-app .arc-tool-dialog .arc-tool-body dd{font-size:14px;line-height:1.65}
#hc-app .arc-tool-dialog .arc-tool-body h3{font-size:15px;color:var(--arc-plum);margin:20px 0 12px}
#hc-app .arc-tool-dialog .arc-tool-body h3:first-child{margin-top:0}
#hc-app .arc-tool-dialog summary{font-size:15px;line-height:1.55;padding:4px 0;cursor:pointer}
#hc-app .arc-tool-dialog summary small{font-size:12px;line-height:1.6}
#hc-app .arc-tool-dialog details{padding:12px 0}
#hc-app .arc-tool-dialog .choices{margin:0 0 16px;gap:8px 24px}
#hc-app .arc-tool-dialog #hc-choices{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center}
#hc-app .arc-tool-dialog .choices label{font-size:14px;line-height:1.5;min-height:40px;min-width:0}
#hc-app .arc-tool-dialog .choices input{flex:none;width:18px;height:18px}
#hc-app .arc-tool-dialog .choices button{min-height:40px;font-size:13px;line-height:1.45;white-space:normal;overflow-wrap:anywhere}
#hc-app .arc-tool-dialog #hc-religion-choices{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));margin-top:18px}
#hc-app .arc-tool-dialog #hc-legend .reference-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:28px;margin:0}
#hc-app .arc-tool-dialog #hc-legend .reference-list>div{padding:10px 0;border-bottom:1px solid var(--arc-rule);font-size:14px;line-height:1.5}
#hc-app .arc-tool-dialog #hc-legend .reference-list>div:first-child{grid-column:1/-1;padding-top:0}
#hc-app .arc-tool-dialog #hc-legend .reference-list>div:last-child{grid-column:1/-1;border-bottom:0}
#hc-app .arc-tool-dialog #hc-legend .reference-list p{max-width:none;margin:6px 0 0;line-height:1.6}
@media(max-width:700px){
 #hc-app .arc-tool-dialog{width:calc(100% - 20px);max-width:calc(100% - 20px);max-height:calc(100dvh - 20px)}
 #hc-app .arc-tool-dialog .arc-tool-panel>.arc-tool-head{padding:14px 16px;align-items:flex-start;flex-wrap:wrap;gap:10px}
 #hc-app .arc-tool-dialog .arc-tool-title{font-size:23px;flex:1 1 140px}
 #hc-app .arc-tool-dialog .arc-tool-head button{min-height:42px}
 #hc-app .arc-tool-dialog .arc-tool-head>div:has(button){justify-content:flex-start}
 #hc-app .arc-tool-dialog .arc-tool-body{padding:16px}
 #hc-app .arc-tool-dialog .arc-tool-body dl{grid-template-columns:1fr;gap:4px}
 #hc-app .arc-tool-dialog .arc-tool-body dd{margin-bottom:16px}
 #hc-app .arc-tool-dialog #hc-choices,#hc-app .arc-tool-dialog #hc-religion-choices{grid-template-columns:minmax(0,1fr);gap:6px}
 #hc-app .arc-tool-dialog #hc-choices>button{margin-bottom:12px;text-align:left}
 #hc-app .arc-tool-dialog #hc-legend .reference-list{grid-template-columns:minmax(0,1fr)}
}