/* Shared presentation, based on the supplied ARG Chronicle navbar, archive header and form surfaces. */
html{scroll-padding-top:calc(var(--site-header-height) + 58px)}
body.site-ui{margin:0;background:var(--bg);color:var(--ink);font:16px/1.8 var(--serif);-webkit-font-smoothing:antialiased}
.site-ui *{box-sizing:border-box}
.site-ui [hidden]{display:none!important}
.site-ui :focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.site-ui.scanlines::before{background:linear-gradient(transparent 50%,#000 50%);background-size:100% 3px;opacity:.055;z-index:250;pointer-events:none}
.site-ui .chronicle-header{position:sticky;top:0;z-index:200;width:100%;background:rgba(10,14,23,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.site-ui .header-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;max-width:var(--site-width);min-height:64px;margin:0 auto;padding:0 32px}
.site-ui .brand{display:flex;align-items:center;flex-shrink:0;gap:12px;color:#fff;text-decoration:none}

.site-ui .brand strong{display:block;font:700 14px/1.5 var(--mono);letter-spacing:.1em}
.site-ui main,.site-ui #arg-editor-main{position:relative;width:100%;max-width:var(--site-width);margin:0 auto;padding:0 32px 24px;min-width:0}
.site-ui .layout{min-height:calc(100dvh - var(--site-header-height))}
.site-ui .chronicle-heading{display:flex;align-items:center;justify-content:space-between;position:relative;gap:24px;min-height:0;margin:0 0 28px;padding:32px 0 26px;border:0;border-bottom:1px solid var(--line);background:transparent}
.site-ui .chronicle-heading::after{display:none}
.site-ui .chronicle-heading .heading-copy{min-width:0}
.site-ui .chronicle-heading .eyebrow{margin:0 0 10px;color:var(--accent);font:12px/1.6 var(--mono);letter-spacing:.12em}
.site-ui .heading-separator{display:inline-block;margin:0 10px;color:#526077}
.site-ui .chronicle-heading h1{margin:0;color:#fff;font:700 36px/1.4 var(--serif);letter-spacing:.025em}
.site-ui .page-description{margin:12px 0 0;color:var(--muted);font:16px/1.8 var(--serif)}
.site-ui .page-note{display:flex;gap:8px;align-items:center;white-space:nowrap;font:12px/1.5 var(--mono);color:var(--muted)}
.site-ui .page-note>span{width:5px;height:5px;background:var(--cyan);border-radius:50%}
.site-ui .chef-intro{display:none}
.site-ui .surface,.site-ui .workbench,.site-ui .chef-stage,.site-ui .hunt-inputs,.site-ui .hunt-results,.site-ui .hunt-extraction,.site-ui .arg-pane-wrap{border:1px solid var(--line);border-radius:4px;box-shadow:none;background:var(--surface)}
.site-ui .surface,.site-ui .workbench{padding:24px}
.site-ui .hunt-workspace{gap:20px;margin:0 0 24px}
.site-ui .hunt-inputs,.site-ui .hunt-results,.site-ui .arg-pane-wrap{padding:20px}
.site-ui .hunt-extraction{padding:24px;margin-top:24px}
.site-ui .hunt-extraction>.hunt-workspace{margin-bottom:0}
.site-ui h2,.site-ui #arg-native-surface h2{font:700 18px/1.6 var(--serif);letter-spacing:.025em}
.site-ui .help,.site-ui .tool-desc{color:var(--muted);font-size:14px;line-height:1.8}
.site-ui .hunt-field>span,.site-ui .inspector>label,.site-ui .inspector label{font-size:14px;line-height:1.7}
.site-ui input:not([type=checkbox]):not([type=radio]):not([type=range]):not([type=file]):not([type=button]):not([type=submit]),.site-ui textarea,.site-ui select,
body.site-ui #arg-native-surface input:not([type=checkbox]):not([type=radio]):not([type=range]):not([type=file]):not([type=button]):not([type=submit]),body.site-ui #arg-native-surface textarea,body.site-ui #arg-native-surface select{background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:4px;font:14px/1.7 var(--mono);padding:10px 12px;max-width:100%;min-width:0}
.site-ui input::placeholder,.site-ui textarea::placeholder{color:#778297;opacity:1}
.site-ui input:focus,.site-ui textarea:focus,.site-ui select:focus{border-color:var(--accent)}
.site-ui .search-field{background:var(--bg);border-radius:4px}.site-ui .search-field input{padding:0!important;border:0!important;background:transparent!important}
.site-ui input[type=checkbox],.site-ui input[type=radio]{accent-color:var(--accent)}
.site-ui .primary-button,.site-ui .secondary-button,.site-ui .hunt-workspace button,.site-ui .hunt-extraction button,body.site-ui #arg-native-surface button,body.site-ui #arg-native-surface input[type=button],body.site-ui #arg-native-surface input[type=submit]{min-height:42px;padding:9px 14px;border:1px solid var(--line);border-radius:4px;background:transparent;box-shadow:none;color:var(--ink);font:14px/1.6 var(--mono)}
.site-ui .primary-button,.site-ui .hunt-workspace .primary-button,.site-ui .hunt-extraction .primary-button,body.site-ui #arg-native-surface #solve{background:var(--accent-strong);border-color:var(--accent-strong);color:var(--bg-deep);font-weight:700}
.site-ui .primary-button:hover,body.site-ui #arg-native-surface #solve:hover{background:var(--accent);border-color:var(--accent);color:var(--bg-deep)}
.site-ui .secondary-button:hover,.site-ui .hunt-workspace button:hover,body.site-ui #arg-native-surface button:hover{border-color:rgba(240,165,0,.6);color:var(--accent)}
.site-ui .quiet-button{font:14px/1.6 var(--mono);min-height:36px}
.site-ui .chef-toolbar{padding:14px 20px;background:transparent;border-bottom:1px solid var(--line)}
.site-ui .chef-version{font-size:12px;color:var(--muted)}.site-ui .chef-local{color:var(--muted)}
.site-ui .chef-pane{padding:20px}.site-ui .chef-pane-heading{margin-bottom:18px}
.site-ui .chef-pane-heading h2{font:700 16px/1.6 var(--serif)}
.site-ui .chef-step{background:var(--bg);border:1px solid var(--line);border-left:2px solid var(--accent-strong);border-radius:3px;box-shadow:none}
.site-ui .chef-step .step-top{background:transparent}.site-ui .chef-step small{color:var(--muted)}
.site-ui .chef-arg>span,.site-ui .chef-arg label{font-size:14px}
.site-ui .chef-operation{border-radius:3px}.site-ui .chef-operation:hover{background:var(--accent-bg)}
.site-ui .chef-status-row{background:var(--bg);padding:12px 20px}.site-ui .chef-status-row .status{font-size:13px}
.site-ui .upload-zone{min-height:112px;padding:20px;border:1px dashed rgba(240,165,0,.3);border-radius:4px;background:var(--bg)}
.site-ui .upload-zone:hover{background:var(--accent-bg);border-color:var(--accent)}
.site-ui .upload-zone strong{font-size:16px}.site-ui .upload-icon{color:var(--accent)}
.site-ui .image-engine-tabs,.site-ui .hunt-tabs{gap:6px;flex-wrap:wrap;padding:0 0 16px;margin:0 0 20px;border-bottom:1px solid var(--line)}
.site-ui .image-engine-tabs button,.site-ui .hunt-tabs button{padding:9px 14px;min-height:42px;color:var(--muted);background:transparent;border:1px solid transparent;border-radius:4px;font:14px/1.6 var(--mono)}
.site-ui .image-engine-tabs .selected,.site-ui .image-engine-tabs [aria-selected=true],.site-ui .hunt-tabs .selected{color:var(--accent);border-color:rgba(240,165,0,.3);background:var(--accent-bg)}
.site-ui .canvas-area{border:1px solid var(--line);border-radius:4px;background-color:var(--bg)}
.site-ui .canvas-empty{font:14px/1.8 var(--serif);color:var(--muted)}
.site-ui .arg-board-viewport{border:1px solid var(--line);border-radius:3px}
.site-ui .arg-board-sizing>span{font-size:13px}.site-ui .arg-number-pad{gap:6px}
body.site-ui #arg-native-surface .arg-quick-tools .is-active,body.site-ui #arg-native-surface .arg-number-pad button:hover{color:var(--accent);border-color:rgba(240,165,0,.4);background:var(--accent-bg)}
.site-ui .tool-provenance{margin:32px 0 0;padding:22px 0 0;border:0;border-top:1px solid var(--line);background:transparent;color:var(--muted);font:14px/1.8 var(--serif)}
.site-ui .tool-provenance>h2,.site-ui .tool-provenance>strong,.site-ui .tool-provenance>.micro-label{display:block;margin:0 0 14px;color:var(--accent);font:12px/1.6 var(--mono);letter-spacing:.08em}
.site-ui .tool-provenance ul{margin:0;gap:16px 32px}.site-ui .tool-provenance li{font:14px/1.8 var(--serif)}
.site-ui .tool-provenance p{margin:8px 0;font:14px/1.8 var(--serif);color:var(--muted)}
.site-ui .tool-provenance a{color:var(--cyan);font:14px/1.8 var(--mono)}
.site-ui .main-footer{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin:36px 0 0;padding:20px 0 0;border-top:1px solid var(--line);color:var(--muted);font:12px/1.8 var(--mono)}
.site-ui .footer-divider{color:var(--accent);margin:0 10px}
.site-ui .resource-card,.site-ui .hunt-app{padding:20px;border:1px solid var(--line);border-radius:4px;background:var(--bg);box-shadow:none}.site-ui .hunt-app strong{font:700 18px/1.5 var(--serif)}
.site-ui .skip{position:fixed;top:-120px;left:16px;z-index:500;padding:10px 16px;background:var(--accent);color:var(--bg-deep);font:14px var(--mono)}.site-ui .skip:focus{top:12px}
/* Keep actual puzzle cells and caret overlays in their original coordinate system. */
body.site-ui #arg-native-surface .xlv-grid-input,body.site-ui #arg-native-surface #fake-input{padding:0;border-radius:0}
@media(max-width:800px){
 :root{--site-header-height:109px;--mobile-header-height:109px}
 .site-ui .header-inner{display:grid;grid-template-columns:1fr auto;gap:0 12px;padding:0 16px;min-height:64px}
 .site-ui .brand{height:64px;gap:9px}.site-ui .brand strong{font-size:14px}
 .site-ui main,.site-ui #arg-editor-main{padding:0 16px 22px}
 .site-ui .chronicle-heading{padding:24px 0 22px;margin-bottom:20px;gap:12px;align-items:flex-start}
 .site-ui .chronicle-heading h1{font-size:28px}.site-ui .chronicle-heading .eyebrow{font-size:12px;margin-bottom:8px}
 .site-ui .page-description{font-size:16px;line-height:1.7;margin-top:10px}.site-ui .page-note{display:none}
 .site-ui .surface,.site-ui .workbench,.site-ui .hunt-inputs,.site-ui .hunt-results,.site-ui .hunt-extraction,.site-ui .arg-pane-wrap{padding:16px}
 .site-ui .hunt-workspace{gap:16px}.site-ui .chef-pane{padding:16px}.site-ui .chef-toolbar{padding:12px 16px}
 .site-ui .chef-tabs,.site-ui .arg-workspace-tabs{position:sticky;top:var(--site-header-height);z-index:100;background:var(--bg);border:1px solid var(--line);border-bottom:0;margin:0;padding:0;border-radius:4px 4px 0 0}
 .site-ui .arg-workspace-tabs{display:flex;gap:0;margin-bottom:16px;border-bottom:1px solid var(--line)}
 .site-ui .chef-tabs button,.site-ui .arg-workspace-tabs button{flex:1;min-height:44px;margin:0;padding:10px 4px;border:0;border-bottom:2px solid transparent;border-radius:0;background:transparent;color:var(--muted);font:14px/1.5 var(--mono)}
 .site-ui .chef-tabs [aria-selected=true],.site-ui .arg-workspace-tabs [aria-selected=true]{color:var(--accent);border-bottom-color:var(--accent);background:var(--accent-bg)}
 .site-ui input:not([type=checkbox]):not([type=radio]):not([type=range]),.site-ui textarea,.site-ui select,body.site-ui #arg-native-surface input:not([type=checkbox]):not([type=radio]):not([type=range]),body.site-ui #arg-native-surface textarea,body.site-ui #arg-native-surface select{font-size:16px}
 .site-ui .primary-button,.site-ui .secondary-button,.site-ui .hunt-workspace button,body.site-ui #arg-native-surface button{min-height:44px}
 .site-ui .image-engine-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.site-ui .image-engine-tabs button{min-width:0;white-space:normal}
 .site-ui .tool-provenance{margin-top:24px;padding-top:20px}.site-ui .main-footer{margin-top:26px;flex-direction:column;gap:5px;font-size:12px}
 .site-ui .tool-provenance ul{grid-template-columns:1fr}
 .site-ui .arg-editor-grid{gap:16px}
}
@media(max-width:380px){.site-ui .header-inner{padding:0 12px}.site-ui main,.site-ui #arg-editor-main{padding-left:12px;padding-right:12px}.site-ui .surface,.site-ui .hunt-inputs,.site-ui .hunt-results,.site-ui .arg-pane-wrap{padding:12px}.site-ui .brand strong{font-size:13px}}
@media(prefers-reduced-motion:reduce){.site-ui *{scroll-behavior:auto!important;transition:none!important}}
/* Remove upstream control chrome that otherwise survives outside the drawing surfaces. */
body.site-ui #xet-nextprev-span{background:transparent;display:flex;flex-direction:row;gap:8px;padding:0}
body.site-ui #arg-native-surface #xet-nextprev-span>button{width:auto;flex:0 0 44px;background:var(--surface)!important;color:var(--ink)!important;border:1px solid var(--line);border-radius:4px}
body.site-ui .xet-above-clue-panel,body.site-ui .xet-clue-menu{background:var(--surface);color:var(--ink);border-color:var(--line)}
body.site-ui #arg-native-surface .xlv-curr-clue{border:1px solid var(--line);border-radius:4px;padding:10px!important;background:var(--bg)}
body.site-ui #arg-native-surface .xlv-curr-clue-inner,body.site-ui #arg-native-surface .xet-curr-clue{padding:0}
body.site-ui #arg-native-surface .xlv-frame .xlv-small-button{color:var(--ink)}
body.site-ui #arg-native-surface{--font-family-base:var(--serif);--font-family-mono:var(--mono);--color-border-light:var(--line);--color-background-special:var(--surface-raised);--color-border-special:var(--line)}
body.site-ui #arg-native-surface .image-button>img{filter:invert(.85)}
body.site-ui #arg-native-surface .constraint-panel{border-radius:4px;padding:0;background:var(--bg)}
body.site-ui #arg-native-surface .collapsible-anchor{justify-content:flex-start;min-height:44px;padding:10px 12px;font:14px/1.6 var(--mono);text-align:left;gap:6px}
body.site-ui #arg-native-surface .collapsible-anchor h2{font:inherit;margin:0;padding-right:14px;letter-spacing:0}
body.site-ui #arg-native-surface .collapsible-anchor:after{border-color:var(--muted)}
body.site-ui #arg-native-surface .collapsible-body{padding:12px;border-top:1px solid var(--line);font:14px/1.7 var(--serif)}
body.site-ui #arg-native-surface .constraint-panel-header{padding:0 0 14px;box-shadow:none}
body.site-ui #arg-native-surface .constraint-panel-header h1{font:700 18px/1.5 var(--serif)}
body.site-ui #arg-native-surface #buttons .label,body.site-ui #arg-native-surface #buttons .labelSu,body.site-ui #arg-native-surface #buttons .label_option,body.site-ui #arg-native-surface #buttons .labelL{background:transparent;border:1px solid var(--line);border-radius:4px;box-shadow:none;font:14px/1.6 var(--mono)}
body.site-ui #arg-native-surface #buttons input:checked+label{border:1px solid rgba(240,165,0,.45)!important;background:var(--accent-bg)!important;color:var(--accent)!important;box-shadow:none!important}
body.site-ui #arg-native-surface hr{height:1px;border:0;background:var(--line)}
body.site-ui .modal-content{border-radius:4px!important}.site-ui .modal-header{font:700 20px/1.5 var(--serif)}
body.site-ui #arg-native-surface .icon-only-button>img{filter:invert(.85)}

/* Per-tool help expands in place and remains available on narrow screens. */
.site-ui .heading-actions{display:flex;flex-direction:column;align-items:flex-end;flex:none;gap:12px}
.site-ui .tool-help-button{min-height:44px;white-space:nowrap;margin:0}
.site-ui .tool-help-button[aria-expanded=true]{color:var(--accent);border-color:var(--accent);background:var(--accent-bg)}
.site-ui .tool-help-panel{margin:0 0 24px;padding:20px 24px;border:1px solid var(--line);border-left:2px solid var(--accent);border-radius:4px;background:var(--surface);overflow-wrap:anywhere}
.site-ui .tool-help-panel h2{margin:0 0 12px;font-size:18px}
.site-ui .tool-help-panel ol{margin:0;padding-left:24px}
.site-ui .tool-help-panel li{padding-left:4px;margin:8px 0;line-height:1.8}
.site-ui .tool-help-panel li::marker{color:var(--accent);font-family:var(--mono)}
.site-ui .tool-help-tip{margin:16px 0 0;padding-top:12px;border-top:1px solid var(--line);font-size:14px;line-height:1.8;color:var(--muted)}
@media(max-width:800px){
 .site-ui .chronicle-heading{flex-wrap:wrap}
 .site-ui .heading-copy{flex:1 1 100%}
 .site-ui .heading-actions{align-items:flex-start}
 .site-ui .tool-help-panel{padding:16px;margin-bottom:20px}
}

.site-ui .project-license{display:block;margin:8px 0 0;color:var(--cyan);font-size:13px;line-height:1.7;overflow-wrap:anywhere;white-space:normal}
.project-notices{margin-top:12px;min-width:0}.project-notices summary{cursor:pointer;min-height:44px;display:flex;align-items:center;font-size:14px;color:var(--muted)}
.project-notices pre{max-height:320px;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;font:12px/1.6 var(--mono);background:var(--bg);padding:12px;border:1px solid var(--line)}
.resource-card:has(.project-notices[open]){grid-column:1/-1}

.site-ui .footer-privacy{flex:0 1 660px;min-width:0;max-width:100%;overflow-wrap:anywhere}
.site-ui .footer-privacy summary{cursor:pointer;color:var(--accent);min-height:32px;padding-top:6px;width:fit-content}
.site-ui .footer-privacy p{margin:6px 0 0;line-height:1.9}
@media(max-width:760px){.site-ui .footer-privacy{flex-basis:auto}}