:root{color-scheme:light;--bg:#efeee8;--surface:#fcfbf7;--surface2:#f5f3ed;--text:#202126;--muted:#626167;--line:#d5d2c7;--accent:#786013;--accent-soft:#fff0b3;--on-accent:#fff;--shadow:none;--radius:2px;--blur:7px}
:root[data-theme=dark]{color-scheme:dark;--bg:#151519;--surface:#222329;--surface2:#1c1d22;--text:#f3f1e8;--muted:#b4b2ba;--line:#3b3c45;--accent:#f5d742;--accent-soft:#373323;--on-accent:#171719;--shadow:none}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,"Segoe UI",Arial,sans-serif;font-size:14px;line-height:1.5}button,input,select{font:inherit}button{color:inherit;cursor:pointer}button:disabled{opacity:.4;cursor:default}*:focus,*:focus-visible{outline:none!important}button{border:0}svg{width:18px;height:18px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}h1,h2,h3,p{margin:0}button,input,select{min-width:0}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.app{display:grid;grid-template-columns:202px minmax(0,1fr);max-width:1600px;min-height:100vh;margin:auto}.sidebar{padding:34px 20px 24px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:38px;background:var(--surface2)}.brand{display:flex;align-items:center;gap:11px;font:30px Georgia,serif;letter-spacing:-1.2px;color:var(--accent)}.brand-mark{width:27px;height:30px;position:relative;display:inline-block}.brand-mark:before,.brand-mark:after{content:"";position:absolute;width:18px;height:23px;border:1.5px solid currentColor;border-radius:2px}.brand-mark:before{left:0;top:0}.brand-mark:after{left:7px;top:6px;background:var(--surface2)}.nav{display:flex;flex-direction:column;gap:7px}.nav-btn{display:flex;align-items:center;gap:12px;text-align:left;background:transparent;padding:12px 13px;border-radius:2px;color:var(--muted);white-space:nowrap}.nav-btn:hover{background:var(--accent-soft);color:var(--text)}.nav-btn.active{background:var(--accent-soft);color:var(--accent);font-weight:600}.nav-label{font-size:13px;letter-spacing:1.7px;color:var(--muted);padding:0 13px 9px;text-transform:uppercase}.sidebar-bottom{margin-top:auto}.collection-label{border-top:1px solid var(--line);padding:20px 10px 0;font-size:14px;color:var(--muted)}.collection-label strong{display:block;font-weight:500;color:var(--text);margin-bottom:5px}.color-dots{display:flex;gap:5px;margin:0 0 14px}.color-dots span{width:16px;height:16px;border-radius:2px}.shell{min-width:0;padding:26px 40px 28px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:36px;min-height:35px}.topbar-label{color:var(--muted);font-size:14px;display:flex;align-items:center;gap:10px}.badge{display:inline-flex;align-items:center;gap:5px;background:var(--accent-soft);color:var(--accent);font-size:13px;font-weight:500;letter-spacing:.15px;border-radius:2px;padding:4px 8px}.top-controls{display:flex;align-items:center;gap:8px}.layout-switch{display:flex;background:var(--surface2);border:1px solid var(--line);padding:3px;border-radius:2px}.layout-switch button{padding:5px 11px;border-radius:2px;background:transparent;color:var(--muted);font-size:14px}.layout-switch button[aria-pressed=true]{background:var(--surface);color:var(--text);box-shadow:0 1px 3px #0001}.icon-btn{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;background:var(--surface);border:1px solid var(--line);border-radius:2px}.focus-brand,.focus-nav{display:none}.page-heading{margin-bottom:26px;display:flex;align-items:flex-end;justify-content:space-between;gap:16px}.eyebrow{color:var(--accent);font-size:13px;letter-spacing:1.8px;text-transform:uppercase;margin-bottom:9px}.page-heading h1{font:38px/1.2 Georgia,"Times New Roman",serif;letter-spacing:-.8px;margin-bottom:11px}.subheading{color:var(--muted);font-size:13px;max-width:580px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 282px;gap:26px;align-items:start}.study-column{min-width:0}.card-counter{display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--muted);font-size:13px;margin-bottom:11px}.card-counter span:first-child{color:var(--text);font-variant-numeric:tabular-nums}.art-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);overflow:hidden;box-shadow:var(--shadow)}.art-frame{padding:14px;border-bottom:1px solid var(--line)}.artwork{aspect-ratio:1.55;display:flex;align-items:center;justify-content:center;border-radius:2px;position:relative;overflow:hidden;background:var(--swatch);color:#fff}.artwork>span{font-size:14px;letter-spacing:.5px;opacity:.85}.artwork .art-tag{position:absolute;top:14px;left:14px;font-size:13px;letter-spacing:.8px;border:1px solid #ffffff38;padding:5px 8px;border-radius:2px;color:#fff;opacity:1;background:#00000012}.artwork .art-num{position:absolute;right:16px;bottom:12px;font-size:13px;font-variant-numeric:tabular-nums;color:#fff;opacity:.7}.answer-row{display:grid;grid-template-columns:77px minmax(0,1fr) 19px;align-items:center;gap:12px;min-height:69px;width:100%;padding:15px 23px;background:var(--surface);text-align:left;border-bottom:1px solid var(--line)}.answer-row:last-child{border-bottom:0}.answer-label{font-size:13px;letter-spacing:.7px;text-transform:uppercase;color:var(--muted)}.answer-value{font:22px/1.3 Georgia,serif;overflow-wrap:anywhere;transition:filter .22s ease}.answer-value.blurred{filter:blur(var(--blur));user-select:none}.answer-row.revealable:hover{background:var(--surface2)}.answer-row svg{color:var(--muted);width:17px;height:17px}.card-footnote{font-size:13px;text-align:center;color:var(--muted);padding:11px 12px;background:var(--surface2);border-top:1px solid var(--line)}.actions{display:flex;gap:10px;margin-top:18px;align-items:center;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;background:var(--surface);padding:12px 19px;border:1px solid var(--line);border-radius:2px;font-size:13px;font-weight:500;min-height:44px}.button:hover{background:var(--surface2)}.button.primary{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}.button.primary:hover{filter:brightness(1.06)}.button.grow{flex:1}.actions>.icon-btn{width:44px;height:44px;border-radius:2px}.keyboard-hint{color:var(--muted);font-size:13px;margin-top:16px;text-align:center}kbd{font:inherit;border:1px solid var(--line);border-bottom-width:2px;padding:1px 4px;border-radius:2px;background:var(--surface)}.settings{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:21px}.panel-title{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:600;margin-bottom:18px}.panel-title svg{color:var(--muted)}.section-label{font-size:13px;color:var(--muted);margin-bottom:9px}.presets{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-bottom:22px}.preset{padding:10px 7px;border:1px solid var(--line);border-radius:2px;background:var(--surface);font-size:13px;display:flex;gap:5px;align-items:center;justify-content:center}.preset[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.preset:hover{background:var(--surface2)}.preset svg{width:13px;height:13px}.visibility-setting{margin-top:14px}.visibility-setting>label{display:block;font-size:14px;margin-bottom:7px}.segments{display:grid;grid-template-columns:repeat(3,1fr);background:var(--surface2);border:1px solid var(--line);padding:3px;border-radius:2px;gap:3px}.segments button{font-size:13px;background:transparent;color:var(--muted);padding:7px 2px;border-radius:2px;min-height:29px}.segments button[aria-pressed=true]{background:var(--accent);color:var(--on-accent)}.segments button:hover:not([aria-pressed=true]){background:var(--accent-soft)}.fine-settings{border-top:1px solid var(--line);margin-top:20px;padding-top:15px}.fine-settings>summary,.focus-options>summary{font-size:14px;cursor:pointer;color:var(--muted);list-style:none;display:flex;align-items:center;justify-content:space-between}.fine-settings>summary svg{width:15px;height:15px;transition:transform .2s}.fine-settings[open]>summary svg{transform:rotate(180deg)}.fine-settings[open]>summary{margin-bottom:17px}.fine-field{margin:15px 0}.fine-field>label{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14px;margin-bottom:7px}.fine-field select{width:100%;border:1px solid var(--line);border-radius:2px;padding:8px;background:var(--surface2);color:var(--text);font-size:14px}.fine-field input[type=range]{width:100%;accent-color:var(--accent)}.check-line{display:flex;align-items:center;gap:9px;font-size:14px;margin:13px 0;cursor:pointer}.check-line input,.filter-chips input{accent-color:var(--accent)}.filter-chips{display:flex;flex-wrap:wrap;gap:6px;margin:9px 0}.filter-chip{font-size:13px;display:flex;align-items:center;gap:5px;padding:6px 7px;background:var(--surface2);border:1px solid var(--line);border-radius:2px;cursor:pointer}.filter-chip input{margin:0;width:12px;height:12px}.panel-note{font-size:13px;color:var(--muted);margin-top:14px;line-height:1.6}.era-modes{display:flex;flex-direction:column;gap:7px;margin-bottom:19px}.era-mode{display:flex;align-items:center;gap:10px;background:var(--surface2);padding:13px;border:1px solid var(--line);border-radius:2px;text-align:left;font-size:14px}.era-mode[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.era-mode svg{width:16px;height:16px}.era-mode small{display:block;font-size:13px;color:var(--muted);font-weight:400;margin-top:3px}.quiz-prompt{padding:17px 23px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}.quiz-prompt span{font-size:14px;color:var(--accent);display:flex;align-items:center;gap:7px}.quiz-prompt small{font-size:13px;color:var(--muted)}.empty-hint{padding:36px 24px;background:var(--surface2);text-align:center;color:var(--muted);font:20px Georgia,serif}.toast{font-size:14px;color:var(--accent);min-height:18px;margin-top:12px;text-align:center}.focus-options{display:none}.menu-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.mode-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow)}.mode-preview{height:158px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;gap:12px;overflow:hidden}.mini-art{width:100px;height:116px;background:#d1ad73;border:8px solid var(--surface);border-radius:2px;box-shadow:0 7px 15px #0001;transform:rotate(-9deg)}.mini-art+div{background:#9da98b;transform:rotate(7deg);margin-left:-25px}.era-preview{display:flex;align-items:center;gap:13px}.era-preview span{border:1px solid var(--line);border-radius:2px;background:var(--surface);padding:13px 17px;font:20px Georgia,serif;box-shadow:0 4px 10px #00000008}.era-preview svg{width:24px;height:24px;color:var(--accent)}.mode-body{padding:25px;flex:1;display:flex;flex-direction:column}.mode-body h2{font:27px Georgia,serif;margin-bottom:9px}.mode-body p{font-size:14px;color:var(--muted);margin-bottom:21px;max-width:310px}.mode-body .section-label{margin-top:3px}.mode-body .presets{margin-bottom:18px}.mode-body .button{margin-top:auto}.menu-modes{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:20px}.menu-modes button{font-size:13px;line-height:1.7;padding:7px 10px;background:var(--surface2);border:1px solid var(--line);border-radius:2px}.menu-modes button[aria-pressed=true]{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.demo-strip{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:25px;padding:21px 24px;border:1px dashed var(--line);border-radius:2px;color:var(--muted);font-size:14px}.demo-strip .color-dots{margin:0}.demo-strip strong{display:block;color:var(--text);font-weight:500;margin-bottom:3px}.mobile-bottom{display:none}.focus-options>.settings{margin-top:14px;box-shadow:none}.app.is-focus{display:block;max-width:1100px}.is-focus .sidebar{display:none}.is-focus .shell{padding:25px 38px 40px}.is-focus .focus-brand{display:flex;font-size:25px}.is-focus .topbar-label{display:none}.is-focus .focus-nav{display:flex;gap:4px;margin:auto}.is-focus .focus-nav button{padding:8px 12px;font-size:14px}.is-focus .topbar{margin-bottom:45px}.is-focus .page-heading{justify-content:center;text-align:center}.is-focus .page-heading h1{font-size:34px}.is-focus .workspace{display:block;max-width:735px;margin:auto}.is-focus .side-settings{display:none}.is-focus .focus-options{display:block;margin-top:24px;border-top:1px solid var(--line);padding-top:16px}.is-focus .artwork{aspect-ratio:2.05}.is-focus .art-frame{padding:18px}.is-focus .answer-row{padding:17px 30px;min-height:75px;grid-template-columns:100px minmax(0,1fr) 19px}.is-focus .answer-value{font-size:25px}.is-focus .actions{max-width:550px;margin:19px auto 0}.is-focus .menu-grid{max-width:850px;margin:auto}.is-focus .demo-strip{max-width:850px;margin:25px auto 0}.is-focus .focus-options .settings{border:0;background:transparent;padding:5px 0;display:grid;grid-template-columns:1fr 1fr;column-gap:30px}.is-focus .focus-options .panel-title{grid-column:1/-1;margin-bottom:14px}.is-focus .focus-options .fine-settings{border-top:0;margin-top:0;padding-top:0}.is-focus .focus-options .panel-note{grid-column:1/-1}
@media(min-width:1350px){.shell{padding:32px 56px}.workspace{grid-template-columns:minmax(0,1fr) 304px;gap:32px}.artwork{aspect-ratio:1.65}.page-heading h1{font-size:42px}.settings{padding:25px}.sidebar{padding-top:40px}}
@media(max-width:1120px){.app{grid-template-columns:174px minmax(0,1fr)}.sidebar{padding:29px 15px}.brand{font-size:27px}.shell{padding:24px 25px}.workspace{grid-template-columns:minmax(0,1fr) 252px;gap:18px}.settings{padding:17px}.page-heading h1{font-size:33px}.answer-row{grid-template-columns:61px minmax(0,1fr) 17px;padding:15px 17px;gap:9px}.answer-value{font-size:21px}.button{padding:11px 14px}.preset{font-size:13px}.topbar-label{font-size:13px}}
@media(max-width:880px){.app{display:block}.sidebar{padding:17px 24px;border-right:0;border-bottom:1px solid var(--line);flex-direction:row;align-items:center;gap:24px}.sidebar .nav{flex-direction:row;gap:3px;flex:1;justify-content:flex-end}.nav-label,.sidebar-bottom{display:none}.nav-btn{font-size:14px;padding:9px 12px;gap:7px}.nav-btn svg{width:15px;height:15px}.sidebar .brand{font-size:26px}.shell{padding:22px 25px}.topbar{margin-bottom:27px}.workspace{grid-template-columns:minmax(0,1fr) 255px;gap:19px}.page-heading h1{font-size:33px}.artwork{aspect-ratio:1.25}.is-focus .focus-nav button{padding:8px}.is-focus .shell{padding:22px 25px}}
@media(max-width:650px){.sidebar{padding:16px 17px 12px;flex-wrap:wrap;gap:12px}.sidebar .brand{width:100%;justify-content:center;font-size:27px}.sidebar .nav{width:100%;justify-content:center}.nav-btn{flex:1;justify-content:center;padding:10px 7px;font-size:14px}.shell{padding:18px 17px 28px}.topbar{margin-bottom:25px;gap:8px}.topbar-label{font-size:13px;gap:5px}.layout-switch button{padding:5px 8px;font-size:13px}.page-heading{margin-bottom:22px}.page-heading h1{font-size:31px;letter-spacing:-.6px}.subheading{font-size:14px}.workspace{display:flex;flex-direction:column;gap:22px}.study-column,.side-settings{width:100%}.artwork{aspect-ratio:1.5}.answer-row{grid-template-columns:72px minmax(0,1fr) 17px;padding:15px 18px}.answer-value{font-size:22px}.settings{padding:20px}.preset{font-size:14px}.segments button{font-size:14px;min-height:34px}.visibility-setting{margin-top:16px}.menu-grid{grid-template-columns:1fr;gap:20px}.mode-preview{height:140px}.mode-body{padding:22px}.mode-body p{max-width:none}.mode-body .presets{margin-bottom:20px}.demo-strip{padding:17px;align-items:flex-start;flex-direction:column;gap:12px}.top-controls{gap:6px}.icon-btn{width:32px;height:32px}.is-focus .shell{padding:18px 17px 30px}.is-focus .topbar{flex-wrap:wrap;margin-bottom:29px}.is-focus .focus-brand{font-size:25px;flex:1}.is-focus .focus-nav{order:3;width:100%;justify-content:center;margin-top:7px}.is-focus .focus-nav button{flex:1;justify-content:center}.is-focus .page-heading h1{font-size:30px}.is-focus .artwork{aspect-ratio:1.5}.is-focus .art-frame{padding:13px}.is-focus .answer-row{padding:16px 18px;grid-template-columns:71px minmax(0,1fr) 17px;gap:8px}.is-focus .answer-value{font-size:22px}.is-focus .focus-options .settings{display:block}.is-focus .focus-options .fine-settings{margin-top:20px;border-top:1px solid var(--line);padding-top:16px}.quiz-prompt{padding:15px 18px}.quiz-prompt small{max-width:100px;text-align:right}.button{font-size:14px}.actions{gap:7px}.keyboard-hint{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
.menu-extras{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.study-selection{margin-top:14px}.empty-hint+.button{margin:0 20px 20px}
.stats-filters{display:flex;flex-wrap:wrap;gap:12px;align-items:end;margin-bottom:20px}.stats-select{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted);min-width:0}.stats-select select{background:var(--surface2);border:1px solid var(--line);border-radius:2px;color:var(--text);font:inherit;font-size:14px;min-height:40px;padding:9px 30px 9px 10px;max-width:100%;cursor:pointer}.stats-filters>.stats-select{flex:1 1 170px}.stats-filters>.stats-select:nth-child(3){flex-basis:260px}.stats-reset{min-height:40px}
.stats-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:20px}.stat-tile{padding:18px;background:var(--surface);border:1px solid var(--line)}.stat-tile>span{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.stat-tile>strong{font-weight:500;font-size:29px;letter-spacing:-.6px;font-variant-numeric:tabular-nums}
.stats-chart-grid,.stats-lower-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.stats-panel{padding:22px;background:var(--surface);border:1px solid var(--line);min-width:0}.stats-panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;flex-wrap:wrap}.stats-panel h2{font-size:18px;line-height:1.4;font-weight:600;letter-spacing:-.3px}.stats-panel-head>span{font-size:13px;color:var(--muted)}.example-badge{background:var(--accent-soft);color:var(--accent)!important;padding:4px 8px;white-space:nowrap}.chart-note{font-size:13px;line-height:1.6;color:var(--muted);margin:12px 0 18px}.chart-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.stats-example-toggle{margin:14px 0 0}.chart-empty{min-height:230px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--muted)}.chart-empty>span{font-size:34px}
.knowledge-chart{max-height:500px;overflow-y:auto}.knowledge-row{width:100%;display:grid;grid-template-columns:minmax(95px,1fr) minmax(100px,1.4fr) 55px;gap:12px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line);background:transparent;text-align:left}.knowledge-row:disabled{opacity:1;cursor:default}.knowledge-row:not(:disabled):hover{background:var(--surface2)}.knowledge-label{font-size:14px;line-height:1.4}.knowledge-track{height:14px;background:var(--surface2);position:relative}.knowledge-track:after{content:"";position:absolute;left:50%;top:-4px;bottom:-4px;border-left:1px solid var(--muted)}.knowledge-track i{position:absolute;top:0;height:100%}.knowledge-value{text-align:right;font-size:18px;font-variant-numeric:tabular-nums}.knowledge-value small{display:block;color:var(--muted);font-size:12px}.knowledge-scale{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);padding-top:15px}
.trend-chart svg{width:100%;height:auto;aspect-ratio:670/230;stroke:none;display:block;margin-top:20px;overflow:visible}.chart-grid{stroke:var(--line);stroke-width:1}.trend-chart text{font:12px "Segoe UI",Arial,sans-serif;fill:var(--muted)}.chart-line{stroke:var(--accent);stroke-width:3;fill:none;stroke-linejoin:round;stroke-linecap:round}.point-hit{fill:transparent;cursor:pointer}.point-dot{fill:var(--accent);stroke:var(--surface);stroke-width:2}.trend-point:focus{outline:none}.trend-point:hover .point-dot{r:7;stroke:var(--text)}.trend-inspector{display:block;border-top:1px solid var(--line);padding-top:12px;color:var(--muted);font-size:13px;min-height:58px}
.coverage-panel{margin:20px 0}.coverage-bar{display:flex;height:24px;background:var(--surface2);overflow:hidden}.coverage-bar>span{height:100%;transition:width .2s}.coverage-unseen{background:#484a52}.coverage-unrated{background:#8a8991}.coverage-poor{background:#cf5e58}.coverage-medium{background:#c6b67a}.coverage-good{background:#62987b}.coverage-legend{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;margin-top:18px}.coverage-legend>div{display:flex;align-items:start;gap:8px;font-size:13px}.coverage-legend i{width:10px;height:10px;flex:none;margin-top:5px}.coverage-legend strong{font-weight:600;margin-left:auto;font-variant-numeric:tabular-nums}.coverage-legend small{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:3px}.coverage-legend strong small{text-align:right}
.frequent-list{list-style:none;margin:0;padding:0}.frequent-list li{display:flex;align-items:center;gap:12px;padding:13px 0;border-top:1px solid var(--line)}.frequent-list img{width:46px;height:58px;object-fit:cover;flex:none}.frequent-list li>div{flex:1;min-width:0}.frequent-list strong{display:block;font-size:14px;font-weight:500;line-height:1.4}.frequent-list small{display:block;color:var(--muted);font-size:12px;margin-top:4px}.frequent-list li>span{text-align:right;font-size:20px;white-space:nowrap;font-variant-numeric:tabular-nums}.session-list{max-height:500px;overflow-y:auto}.session-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 0;border-top:1px solid var(--line);font-size:14px}.session-row strong{font-weight:500}.session-row small{display:block;color:var(--muted);font-size:12px;margin-top:5px}.session-row>span{white-space:nowrap;font-variant-numeric:tabular-nums}.stats-no-data{padding:20px 0;color:var(--muted);font-size:14px;line-height:1.6}
@media(max-width:1250px){.stats-chart-grid,.stats-lower-grid{grid-template-columns:1fr}.coverage-legend{grid-template-columns:repeat(3,1fr)}}
@media(max-width:650px){.stats-summary{grid-template-columns:1fr 1fr}.stat-tile{padding:14px}.stat-tile>strong{font-size:25px}.stats-panel{padding:16px}.coverage-legend{grid-template-columns:1fr 1fr}.knowledge-row{grid-template-columns:minmax(90px,1fr) minmax(80px,1fr) 46px;gap:8px}.stats-filters{gap:10px}.stats-panel h2{font-size:17px}.page-heading:has(+.stats-filters){align-items:flex-start;flex-direction:column}}

.cards-heading{margin-bottom:14px}.cards-heading .eyebrow{margin-bottom:4px}

.edition-pill{display:inline-block;padding:3px 7px;background:var(--accent-soft);border:1px solid var(--accent);color:var(--accent);font:600 11px/1.5 "Segoe UI",Arial,sans-serif;letter-spacing:1px;white-space:nowrap}.brand{flex-wrap:wrap}.demo-banner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;margin-bottom:24px;background:var(--surface);border:1px solid var(--accent)}.demo-banner>div{flex:1 1 360px}.demo-banner strong{color:var(--accent);font-size:17px;letter-spacing:1px}.demo-banner p{margin:7px 0;font-size:14px;line-height:1.6}.demo-banner span{color:var(--muted);font-size:13px}.activation-form{flex:1 1 100%;padding-top:16px;border-top:1px solid var(--line)}.activation-form>label{display:block;font-size:14px;margin-bottom:8px}.activation-form>div{display:flex;gap:10px;max-width:500px;flex-wrap:wrap}.activation-form input{flex:1;min-width:150px;padding:12px;background:var(--surface2);border:1px solid var(--line);color:var(--text);font:inherit}.activation-form p{color:#cf5e58;margin-bottom:0}.demo-limit{padding:30px;border:1px solid var(--line);background:var(--surface)}.demo-limit h1{font-size:28px;margin:14px 0}.demo-limit p{color:var(--muted);margin-bottom:22px;max-width:650px}.demo-limit .button{margin:0 10px 10px 0}@media(max-width:650px){.demo-banner{padding:16px}.demo-limit{padding:20px}}

.management-panel{margin-top:20px}.management-actions{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:18px}.management-actions p{font-size:13px;color:var(--muted);line-height:1.6;margin-top:10px}.management-message{margin-top:18px;font-size:14px;color:var(--accent)}.confirmation-dialog{width:min(520px,calc(100vw - 32px));padding:28px;background:var(--surface);color:var(--text);border:1px solid var(--line);box-shadow:0 15px 80px #0008}.confirmation-dialog::backdrop{background:#000b}.confirmation-step{color:var(--accent);font-size:13px;letter-spacing:1px;text-transform:uppercase}.confirmation-dialog h2{font-size:25px;line-height:1.3;margin:15px 0}.confirmation-dialog p{font-size:15px;color:var(--muted);line-height:1.7}.confirmation-dialog>div{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.confirmation-dialog .button{flex:1;white-space:normal}@media(max-width:650px){.management-actions{grid-template-columns:1fr}.confirmation-dialog{padding:22px}}
.art-card:not(.epoch-card) .artwork,.is-focus .art-card:not(.epoch-card) .artwork{height:var(--study-image-height,clamp(160px,38dvh,420px))}
.art-card:not(.epoch-card) .answer-row,.is-focus .art-card:not(.epoch-card) .answer-row{min-height:58px;padding-top:11px;padding-bottom:11px}
.art-card:not(.epoch-card) .confidence{border-top:1px solid var(--line)}
.epoch-card .answers{padding:16px 0}.epoch-card .answer-row,.is-focus .epoch-card .answer-row{grid-template-columns:minmax(0,1fr) 19px;min-height:132px;padding:24px 28px;gap:10px}.epoch-card .answer-label{grid-column:1/-1}.epoch-card .answer-value{font-size:clamp(24px,3vw,34px)}
.page-heading{flex-wrap:wrap}.page-heading>div{flex:1 1 320px}.workspace{row-gap:0}.workspace>.card-counter{grid-column:1;grid-row:1}.workspace>.study-column{grid-column:1;grid-row:2}.workspace>.side-settings{grid-column:2;grid-row:2}.roulette-dropdown{margin-top:14px;border:1px solid var(--line);border-radius:2px;background:var(--surface);overflow:hidden}.roulette-dropdown>summary{display:flex;align-items:center;gap:8px;list-style:none;cursor:pointer;min-height:52px;padding:15px 16px;font-size:14px;font-weight:500}.roulette-dropdown>summary::-webkit-details-marker{display:none}.roulette-label{display:flex;align-items:center;gap:8px}.roulette-label svg{width:16px;height:16px;color:var(--muted)}.roulette-count{margin-left:auto;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}.roulette-chevron{width:14px;height:14px;color:var(--muted);transition:transform .2s}.roulette-dropdown[open]>summary{border-bottom:1px solid var(--line)}.roulette-dropdown[open] .roulette-chevron{transform:rotate(180deg)}.roulette-content{padding:12px 16px 16px}.roulette-description{font-size:13px;color:var(--muted);margin-bottom:12px}.epoch-options{display:grid;gap:6px}.epoch-option{display:flex;align-items:center;gap:9px;min-height:39px;padding:9px 10px;background:var(--surface2);border:1px solid var(--line);border-radius:2px;cursor:pointer;font-size:14px}.epoch-option:has(input:checked){background:var(--accent-soft);border-color:var(--accent)}.epoch-option input{width:15px;height:15px;margin:0;accent-color:var(--accent);flex:none}.roulette-error{font-size:14px;color:light-dark(#a63f32,#efaa99);margin-top:12px}.menu-roulette{max-width:420px;margin:24px auto 0}@media(max-width:650px){.workspace>.side-settings{margin-top:22px}}
.space-next-setting{justify-content:center;align-items:flex-start;margin:13px 0 0;padding:8px 0;color:var(--muted);font-size:14px}.space-next-setting input{flex:none;margin-top:3px}.space-next-setting span{max-width:440px}
.answer-pair{display:flex;align-items:baseline;flex-wrap:wrap;gap:7px 14px;min-width:0}.answer-pair .answer-value{min-width:0}.answer-pair .answer-date{font-size:17px;line-height:1.5;color:var(--muted);white-space:nowrap;border-left:1px solid var(--line);padding-left:14px;font-variant-numeric:tabular-nums}.is-focus .answer-pair .answer-date{font-size:19px}.dates-settings{margin-top:18px;padding-top:15px;border-top:1px solid var(--line)}
.order-settings{margin-top:14px}.order-settings .panel-title{margin-bottom:14px}.order-options{display:grid;gap:7px}.order-choice{display:flex;align-items:center;gap:10px;width:100%;min-height:44px;padding:11px 12px;border:1px solid var(--line);border-radius:2px;background:var(--surface2);text-align:left;font-size:14px}.order-choice:before{content:"";width:14px;height:14px;border:1px solid var(--muted);border-radius:50%;flex:none}.order-choice[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.order-choice[aria-pressed=true]:before{border:4px solid var(--accent);background:var(--surface)}.is-focus .focus-options .settings{display:block}
.settings .presets{margin-bottom:12px}.settings .roulette-dropdown{margin:0 0 20px;border-radius:2px;background:var(--surface2)}.settings .roulette-dropdown>summary{padding:12px 10px;gap:6px}.settings .roulette-content{padding:10px}
.artwork{aspect-ratio:auto;height:clamp(260px,48vh,520px);background:var(--surface2)}.artwork img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}.is-focus .artwork{height:clamp(300px,58vh,650px)}.answer-pair .answer-value{max-width:100%}.answer-pair .answer-date{white-space:normal;overflow-wrap:anywhere}.answer-value.missing{font-family:inherit;font-size:14px;color:var(--muted)}.epoch-options{max-height:330px;overflow:auto;padding-right:3px}.epoch-option{align-items:flex-start}.epoch-option input{margin-top:2px}.source-details{border-top:1px solid var(--line);background:var(--surface2);padding:12px 20px;font-size:13px;color:var(--muted)}.source-details>summary{cursor:pointer}.source-details .source-body{padding-top:12px;display:grid;gap:8px}.source-details a{color:var(--accent);overflow-wrap:anywhere}.source-details p{overflow-wrap:anywhere}.mini-art{background:var(--surface2);overflow:hidden;flex:none}.mini-art img{width:100%;height:100%;object-fit:contain}.collection-note{font-size:13px;color:var(--muted);margin-top:8px}.image-error{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-align:center;padding:20px;color:var(--muted);font-size:14px}
@media(max-width:420px){.art-card:not(.epoch-card) .answer-row{grid-template-columns:60px minmax(0,1fr) 17px;gap:8px;padding:15px 14px}.answer-pair{gap:6px 9px}.answer-pair .answer-date,.is-focus .answer-pair .answer-date{font-size:16px;padding-left:9px}}
.confidence{padding:17px 23px 18px;border-bottom:1px solid var(--line);background:var(--surface2)}.confidence-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;margin-bottom:7px}.confidence-score{font-weight:600;font-variant-numeric:tabular-nums}.confidence-slider{display:block;width:100%;height:32px;margin:0;appearance:none;-webkit-appearance:none;background:transparent;cursor:pointer}.confidence-slider::-webkit-slider-runnable-track{height:7px;border-radius:2px;background:linear-gradient(90deg,#cf5e58 0%,#d59765 25%,#c6b67a 50%,#97ad76 75%,#62987b 100%)}.confidence-slider::-moz-range-track{height:7px;border-radius:2px;background:linear-gradient(90deg,#cf5e58,#c6b67a,#62987b)}.confidence-slider::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:21px;height:21px;border-radius:50%;margin-top:-7px;border:3px solid var(--surface);background:var(--confidence-color);box-shadow:0 0 0 1px var(--muted),0 2px 5px #0003}.confidence-slider::-moz-range-thumb{width:15px;height:15px;border-radius:50%;border:3px solid var(--surface);background:var(--confidence-color);box-shadow:0 0 0 1px var(--muted)}.confidence-slider:focus-visible{outline:none}.confidence-ticks{display:flex;justify-content:space-between;padding:0 6px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}.confidence-caption{display:flex;justify-content:space-between;gap:12px;margin-top:6px;font-size:13px;color:var(--muted)}.confidence-help{font-size:13px;color:var(--muted);margin-top:11px}.confidence-save-error{font-size:13px;color:#cf5e58;margin-top:8px}.confidence-save-error[hidden]{display:none}@media(max-width:650px){.confidence{padding:16px 18px}.confidence-help{line-height:1.6}}
.art-type-settings{border:0;padding:0;margin:0 0 21px;min-width:0}.art-type-settings legend{font-size:13px;color:var(--muted);margin-bottom:9px}.art-type-options{display:grid;grid-template-columns:1fr 1fr;gap:6px}.art-type-options .epoch-option{font-size:13px;padding:9px 7px;gap:6px}.art-type-settings .panel-note{margin-top:9px}.menu-roulette .art-type-settings{margin-top:18px}.empty-hint{font-family:inherit;font-size:15px;line-height:1.6}
html,body{height:100%;overflow:hidden}
.app{height:100vh;height:100dvh;overflow:auto;overflow-x:hidden;overscroll-behavior-y:contain;overflow-anchor:none;scrollbar-gutter:stable}
.sidebar{position:sticky;top:0;align-self:start;height:100vh;height:100dvh;gap:32px}
.brand{font-family:"Segoe UI",Arial,sans-serif;font-size:25px;font-weight:600;letter-spacing:-.6px}
.page-heading h1,.mode-body h2{font-family:"Segoe UI",Arial,sans-serif;font-weight:600;letter-spacing:-.8px}
.page-heading h1{font-size:34px}.name-word{display:inline-block}.name-initial{color:inherit;font-weight:inherit}.subheading{font-size:15px;line-height:1.6}
.topbar{margin-bottom:25px;flex-wrap:wrap}.topbar-label{flex-wrap:wrap}.top-controls{margin-left:auto}
.nav-btn{white-space:normal}.brand-mark:before,.brand-mark:after{border-radius:0}
.art-card,.settings,.mode-card{box-shadow:none}.settings{padding:20px}.workspace{grid-template-columns:minmax(0,1fr) 304px;gap:0 26px}
.panel-title{font-size:16px}.preset{font-size:13px;min-height:44px;text-align:left;justify-content:flex-start;padding:10px 8px}.preset svg{width:14px;height:14px;flex:none}
.check-line input{width:17px;height:17px;accent-color:var(--accent)}.epoch-option input{width:17px;height:17px}
.answer-label{font-size:13px}.answer-value{font-size:24px}.answer-pair .answer-date{font-size:16px}
.confidence-heading{font-size:14px}.confidence-help,.keyboard-hint{line-height:1.7}.confidence-slider::-webkit-slider-thumb{border-radius:50%}.confidence-slider::-moz-range-thumb{border-radius:50%}
.button.primary{background:#f5d742;border-color:#f5d742;color:#171719}.button.primary:hover{background:#ffe36b;border-color:#ffe36b;filter:none}
.mini-art{width:140px;height:176px;border:0;border-radius:0;background:transparent;box-shadow:none;transform:rotate(-8deg)}.mini-art+div{transform:rotate(7deg);margin-left:-24px;background:transparent}.mini-art img{display:block;width:100%;height:100%;object-fit:cover}
.mode-preview{height:220px;background:var(--surface2)}.mode-body{padding:24px}.mode-body p{font-size:15px;max-width:none;line-height:1.6}.menu-roulette{max-width:560px}.collection-note{line-height:1.7}
.source-details a{color:var(--text);text-underline-offset:3px}
.is-focus .page-heading h1{font-size:34px}.is-focus .topbar{margin-bottom:28px}.is-focus .workspace{max-width:860px}.is-focus .answer-row{grid-template-columns:82px minmax(0,1fr) 19px}
@media(min-width:1350px){.workspace{grid-template-columns:minmax(0,1fr) 320px;gap:0 32px}.settings{padding:24px}}
@media(max-width:1120px){.workspace{grid-template-columns:minmax(0,1fr) 284px;gap:0 20px}.settings{padding:16px}.shell{padding:24px}.page-heading h1{font-size:32px}}
@media(max-width:880px){.sidebar{position:static;align-self:auto;height:auto;gap:18px}.sidebar .brand{font-size:23px}.sidebar .nav{flex-wrap:wrap}.nav-btn{font-size:14px}.workspace{grid-template-columns:minmax(0,1fr) 284px;gap:0 20px}}
@media(max-width:650px){.workspace{display:flex;gap:20px}.workspace>.side-settings{margin-top:0}.sidebar .brand{justify-content:flex-start}.sidebar .nav{justify-content:flex-start}.nav-btn{justify-content:center}.topbar{gap:15px}.top-controls{gap:8px}.topbar-label{font-size:13px}.layout-switch button{font-size:13px;min-height:34px}.page-heading h1{font-size:30px}.artwork{height:clamp(260px,42vh,430px)}.settings{padding:20px}.preset{font-size:14px;justify-content:center}.mode-preview{height:210px}.mode-body{padding:20px}.mode-body p{font-size:15px}.keyboard-hint{display:block}.answer-value{font-size:22px}.answer-pair .answer-date{font-size:16px}.is-focus .answer-row{grid-template-columns:65px minmax(0,1fr) 17px}.is-focus .answer-value{font-size:22px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}

.chart-insufficient{margin:16px 0;padding:16px;border:1px solid var(--line);background:var(--surface2)}.chart-insufficient strong{display:block;font-size:17px;line-height:1.4;color:var(--text)}.chart-insufficient p{margin-top:8px;color:var(--muted);font-size:14px;line-height:1.6}.example-preview{opacity:.4;filter:saturate(.4);pointer-events:none;user-select:none}.example-preview .knowledge-row:disabled{opacity:1}.example-preview .trend-inspector{display:none}

.collection-picker{display:flex;align-items:center;gap:12px;margin-bottom:22px;flex-wrap:wrap}.collection-picker label{color:var(--muted);font-size:14px}.collection-picker select{flex:1;min-width:180px;background:var(--surface);color:var(--text);border:1px solid var(--line);padding:11px 12px;border-radius:2px;max-width:520px}.collection-picker .button{margin-left:auto}.pack-import{padding:24px;background:var(--surface);border:1px solid var(--line);margin-bottom:24px}.pack-dropzone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;min-height:205px;border:1px dashed var(--muted);padding:28px;text-align:center;cursor:pointer;background:var(--surface2)}.pack-dropzone:hover,.pack-dropzone.is-dragging{border-color:var(--accent);background:var(--accent-soft)}.pack-dropzone.is-busy{cursor:progress;opacity:.65}.pack-add{font-size:38px;line-height:1;color:var(--accent)}.pack-dropzone strong{font-size:19px;line-height:1.5}.pack-status{margin-top:18px;font-size:15px;line-height:1.6;color:var(--text)}.pack-status.error{color:#e48178}.pack-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.pack-card{border:1px solid var(--line);background:var(--surface);padding:24px;display:flex;flex-direction:column;min-width:0}.pack-card-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:19px}.pack-active{color:var(--muted);font-size:13px}.pack-card h2{font-size:23px;line-height:1.3;overflow-wrap:anywhere}.pack-meta{margin:20px 0;color:var(--muted);font-size:14px}.pack-card>.button{margin-top:auto;align-self:flex-start}@media(max-width:700px){.pack-grid{grid-template-columns:1fr}.pack-import,.pack-card{padding:18px}.collection-picker label{width:100%}.collection-picker select{max-width:none}.collection-picker .button{margin-left:0}.pack-dropzone{padding:20px;min-height:180px}.pack-dropzone strong{font-size:17px}}
.art-card.maturita-card{border-color:light-dark(#c89591,#895a58)}.artwork{position:relative}.maturita-label{position:absolute;z-index:1;top:10px;left:10px;padding:5px 9px;border:1px solid light-dark(#c89591,#895a58);background:var(--surface);color:light-dark(#8e4e49,#dca5a0);font:500 13px/1.2 "Segoe UI",Arial,sans-serif;letter-spacing:.04em;pointer-events:none}
.answer-placeholder{display:block;width:min(100%,28rem);min-width:0;height:31px;overflow:hidden;white-space:nowrap;font:24px/31px Georgia,serif;color:var(--text);filter:blur(var(--blur));opacity:.7;user-select:none;pointer-events:none}

.brand-name{flex:1;min-width:90px;font-size:18px;line-height:1.3;letter-spacing:0}.brand-mark{flex-shrink:0}
.menu-dlc{margin-top:24px}.menu-dlc-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}.menu-dlc-heading h2{font-size:23px;font-weight:500}.menu-dlc-add{width:44px;padding:0;font-size:27px}.menu-dlc-list{display:grid;gap:10px}.menu-dlc-item{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;padding:18px 20px;border:1px solid var(--line);background:var(--surface);color:var(--text);text-align:left}.menu-dlc-item:hover{background:var(--surface2)}.menu-dlc-item>span{min-width:0}.menu-dlc-item strong{display:block;font-size:18px;font-weight:500;overflow-wrap:anywhere}.menu-dlc-item small{display:block;margin-top:5px;font-size:14px;color:var(--muted)}.menu-dlc-item svg{flex-shrink:0}

.menu-pack-entry{display:flex;align-items:stretch;gap:8px}.menu-pack-entry .menu-dlc-item{flex:1;min-width:0}.pack-delete{color:light-dark(#994c46,#dca5a0);background:var(--surface);white-space:nowrap}.pack-delete:hover{background:var(--surface2)}.pack-card>.pack-delete{margin-top:12px}@media(max-width:650px){.menu-pack-entry{flex-wrap:wrap}.menu-pack-entry .menu-dlc-item{flex-basis:100%}.menu-pack-entry>.pack-delete{margin-left:auto}}

.order-confidence-scale{width:40px;height:4px;flex:none;margin-left:auto;background:linear-gradient(90deg,#cf5e58,#c9b76d,#62987b)}

.answers{position:relative}
.answer-controls{display:flex;justify-content:flex-end;padding:3px 10px;border-bottom:1px solid var(--line)}
.answer-settings-toggle{width:28px;height:28px;border:0;background:transparent;color:var(--muted)}
.answer-settings-toggle:hover,.answer-settings-toggle[aria-expanded=true]{color:var(--accent);background:var(--accent-soft)}
.answer-settings-popover{position:absolute;z-index:5;bottom:calc(100% + 8px);right:10px;width:min(280px,calc(100% - 20px));padding:16px;background:var(--surface2);border:1px solid var(--line);box-shadow:0 12px 32px #0006}
.answer-settings-popover .visibility-setting{margin:0 0 16px}
.answer-settings-popover .visibility-setting:last-child{margin-bottom:0}
.answer-settings-popover .segments button{min-width:0;padding:8px 5px}

.art-card:has(.answer-settings-popover){overflow:visible}

.exercise-modes{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 14px}.exercise-modes button[aria-pressed=true]{background:var(--accent);color:#121212;border-color:var(--accent)}
.test-answer{padding:14px 20px;display:grid;grid-template-columns:80px 1fr;gap:16px;border-top:1px solid var(--line)}.test-answer>span{font-size:12px;text-transform:uppercase;color:var(--muted)}.test-answer strong{font-family:Georgia,serif;font-size:22px}.test-answer small{display:block;margin-top:5px;color:var(--muted)}.test-answer-mask{padding:20px;display:grid;gap:20px}.test-answer-mask i{height:20px;width:80%;display:block;background:linear-gradient(90deg,#75809455,#a6aebf99,#75809455);filter:blur(6px)}
.test-result-row{display:flex;gap:10px;padding:16px 20px}.test-result-row .button{flex:1}.result-right{background:#254333;border-color:#62987b}.result-wrong{background:#4b2b2d;border-color:#cf5e58}.test-caption,.date-caption{font-size:13px;color:var(--muted);margin:8px 20px 18px}.date-guess-form{padding:18px 22px}.date-scale{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:8px}.date-axis{width:100%;accent-color:var(--accent)}.date-guess-form label{display:flex;align-items:center;gap:14px;margin:18px 0}.date-guess-form input[type=number]{width:150px;background:var(--surface);color:var(--text);padding:10px;border:1px solid var(--line)}.date-guess-form .date-caption{margin:10px 0 16px}.date-feedback{padding:16px 22px;border-top:1px solid var(--line)}.date-feedback.hit{color:#a6d9b5}.date-feedback.miss{color:#ee9f9f}.date-index{color:var(--muted);font-size:13px}.date-card .artwork{max-height:34vh}.epoch-group{border-bottom:1px solid var(--line);padding:4px 0 8px}.epoch-group>summary{font-weight:600;font-size:13px;padding:10px 4px;cursor:pointer;color:var(--text)}.epoch-group .epoch-option{margin-left:12px}
.test-card .artwork{max-height:34vh}.test-card .test-answer{padding:10px 20px}.test-card .test-result-row{padding:12px 20px}.test-card .test-caption{margin-bottom:12px}

.date-line{display:block;width:100%;height:106px;position:relative;padding:0;background:transparent;color:var(--text);cursor:crosshair;touch-action:manipulation;border:0!important}.date-line-inner{position:absolute;left:16px;right:16px;top:48px;height:1px}.date-line-track{position:absolute;left:0;right:0;top:0;height:2px;background:#90919a}.date-tick{position:absolute;top:0;transform:translateX(-50%);font-size:12px;color:var(--muted);padding:0 5px 14px;cursor:pointer}.date-tick>i{display:block;height:7px;width:7px;margin:-3px auto 10px;border-radius:50%;background:#b4b2ba}.date-tick>span{white-space:nowrap}.date-line-marker{position:absolute;top:0;transform:translateX(-50%);pointer-events:none}.date-line-marker>i{display:block;width:13px;height:13px;border-radius:50%;background:var(--accent);margin-top:-6px;box-shadow:0 0 0 4px #f5d74220}.date-line-marker strong{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);font-size:15px;color:var(--accent);white-space:nowrap}.date-line-readout{font-size:14px;min-height:22px;margin:0 0 16px;color:var(--text)}.date-line:disabled{opacity:1;cursor:default}.date-line:disabled .date-tick{cursor:default}@media(max-width:640px){.date-tick{font-size:10px}.date-guess-form{padding-left:12px;padding-right:12px}}
.date-line{touch-action:none;user-select:none}.date-line.is-dragging{cursor:grabbing}.date-line.is-dragging .date-line-marker>i{box-shadow:0 0 0 7px #f5d74225}.date-detail{position:absolute;z-index:6;left:50%;top:-97px;transform:translateX(-50%);width:min(280px,100%);height:52px;display:flex;justify-content:space-around;align-items:center;background:var(--surface);border:1px solid var(--line);box-shadow:0 8px 25px #0005;color:var(--text);font-size:12px;pointer-events:none}.date-detail span{text-align:center;flex:1}.date-detail i{display:block;height:8px;width:1px;margin:0 auto 5px;background:var(--accent)}

.date-help,.date-answer{padding:14px 22px;border-top:1px solid var(--line)}.date-answer strong{display:block;color:var(--accent);margin-bottom:7px}.date-answer small{display:block;color:var(--muted);margin-top:8px}
.algorithm-knowledge{margin-top:11px;max-width:92%;opacity:.66}.algorithm-knowledge-label{display:flex;justify-content:space-between;gap:12px;font-size:11px;line-height:1.4;color:var(--muted);font-variant-numeric:tabular-nums;margin-bottom:5px}.algorithm-knowledge-track{height:3px;background:#9499a51f;overflow:hidden}.algorithm-knowledge-track i{display:block;height:100%;background:#929ba7;transition:width .18s ease}