/* Shared shell and progress layout; each app supplies content and state. */
:root{--workspace-header:76px;--workspace-sidebar:250px;--ws-canvas:#f7f8fa;--ws-paper:#fff;--ws-ink:#252b30;--ws-muted:#596570;--ws-line:#e6e9ed;--ws-accent:#a83a00;--ws-selected:#fff1e5}
:root[data-theme=dark]{color-scheme:dark;--ws-canvas:#11130f;--ws-paper:#191b17;--ws-ink:#f1efe8;--ws-muted:#bec2b9;--ws-line:#30342d;--ws-accent:#ff9a5d;--ws-selected:#35251d}
.workspace-header{height:var(--workspace-header);max-width:none;margin:0;padding:0 30px;position:sticky;top:0;z-index:5;background:var(--ws-paper);border-bottom:1px solid var(--ws-line);display:flex;align-items:center;gap:24px;flex-wrap:nowrap}
.workspace-header .app-name{font-size:16px;font-weight:600;color:var(--ws-ink);padding-left:24px;border-left:1px solid var(--ws-line);white-space:nowrap}
.workspace-tools{margin-left:auto;display:flex;align-items:center;gap:12px;font-size:13px}.workspace-tools button{font-size:12px;padding:8px 12px;min-height:40px}
.workspace-layout{display:grid;grid-template-columns:var(--workspace-sidebar) minmax(0,1fr)}
.workspace-sidebar{padding:26px 20px;position:sticky;top:var(--workspace-header);height:calc(100dvh - var(--workspace-header));overflow-y:auto;border-right:1px solid var(--ws-line);background:var(--ws-paper)}
.workspace-sidebar .eyebrow{color:var(--ws-muted);font-size:11px;letter-spacing:.12em;font-weight:600}
.workspace-sidebar nav{margin:0;display:flex;flex-direction:column;align-items:stretch;gap:5px;font-size:14px}
.workspace-sidebar nav a{margin:0;padding:12px 16px;color:var(--ws-ink);border-radius:9px;font-weight:600;min-height:48px}
.workspace-sidebar nav a[aria-current=page],.workspace-sidebar nav a.active{color:var(--ws-accent);background:var(--ws-selected);text-decoration:none}
.workspace-sidebar .sidebar-note{margin:44px 12px 0;color:var(--ws-muted);font-size:12px;line-height:2}.workspace-sidebar .sidebar-note strong{color:var(--ws-ink)}
.workspace-main{width:100%;min-width:0;max-width:1250px;margin:0 auto;padding:34px 40px 70px}
.workspace-main>h1,.workspace-main>.intro h1{font-size:30px;line-height:1.35;letter-spacing:-.6px}
.workspace-main .card{border-radius:14px;background:var(--ws-paper);border-color:var(--ws-line)}
.workspace-main .hero{padding:30px 34px;border:1px solid #efd7c5;background:#fff6ed;border-radius:16px;margin:22px 0}
.workspace-main .hero h2{margin-top:12px}.workspace-main .hero p{max-width:650px}
.workspace-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:24px 0}
.workspace-metric{min-width:0;padding:22px;border:1px solid var(--ws-line);border-radius:12px;background:var(--ws-paper)}
.workspace-metric strong{display:block;font-size:30px;font-weight:600;line-height:1.4;font-variant-numeric:tabular-nums}.workspace-metric span{font-size:13px;color:var(--ws-muted)}
.workspace-table-wrap{max-width:100%;overflow-x:auto}.workspace-progress{width:100%;border-collapse:collapse;font-size:14px}.workspace-progress caption{text-align:left;font-size:19px;font-weight:600;padding:0 0 18px;color:var(--ws-ink)}
.workspace-progress th,.workspace-progress td{text-align:left;vertical-align:middle;padding:14px 10px;border-bottom:1px solid var(--ws-line)}.workspace-progress thead th{font-size:12px;color:var(--ws-muted);font-weight:600}.workspace-progress tbody th{font-weight:500;min-width:150px}.workspace-progress small{display:block;color:var(--ws-muted);font-size:11px;margin-top:3px}.workspace-progress progress{display:block;width:100%;min-width:70px;max-width:160px;height:6px;margin:8px 0 0;accent-color:var(--ws-accent)}.workspace-progress button{font-size:12px;white-space:nowrap;min-height:44px;padding:8px 12px}.workspace-progress .workspace-due{font-weight:600;color:var(--ws-accent);min-width:44px}
.workspace-search{width:100%;padding:13px 16px;margin:12px 0 20px;border:1px solid var(--ws-line);border-radius:9px;background:var(--ws-paper);color:var(--ws-ink);font:inherit}.workspace-filters{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.workspace-filters button{font-size:12px}.workspace-filters [aria-pressed=true]{border-color:var(--ws-accent);color:var(--ws-accent);background:var(--ws-selected)}
.workspace-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.workspace-banner p{margin:0}
:root[data-theme=dark] .workspace-main .hero{background:#271e18;border-color:#63412c}
@media(max-width:1000px){:root{--workspace-sidebar:210px}.workspace-main{padding:28px 24px 60px}.workspace-metrics{gap:12px}}
@media(max-width:700px){:root{--workspace-header:66px}.workspace-header{padding:0 14px;gap:14px}.workspace-header .app-name{padding-left:14px;font-size:14px}.workspace-tools{gap:6px}.workspace-tools>a{display:none}.workspace-tools button{padding:7px 9px;font-size:11px}.workspace-layout{display:block}.workspace-sidebar{position:sticky;top:var(--workspace-header);height:auto;padding:6px 8px;border-right:0;border-bottom:1px solid var(--ws-line);z-index:4;overflow:visible}.workspace-sidebar>.eyebrow,.workspace-sidebar .sidebar-note{display:none}.workspace-sidebar nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2px;width:100%}.workspace-sidebar nav a{display:flex;align-items:center;justify-content:center;text-align:center;padding:7px 4px;min-height:44px;font-size:12px;white-space:normal}.workspace-main{padding:24px 16px 48px}.workspace-main>h1,.workspace-main>.intro h1{font-size:26px}.workspace-main .hero{padding:22px}.workspace-metrics{gap:10px}.workspace-metric{padding:14px}.workspace-metric strong{font-size:24px}.workspace-metric span{font-size:12px}.workspace-progress thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.workspace-progress,.workspace-progress tbody,.workspace-progress tr{display:block}.workspace-progress caption{display:block}.workspace-progress tr{padding:16px 0;border-bottom:1px solid var(--ws-line)}.workspace-progress tbody th{display:block;font-weight:600;padding:0 0 12px;border:0}.workspace-progress td{display:grid;grid-template-columns:120px minmax(0,1fr);gap:4px 12px;padding:6px 0;border:0;align-items:center}.workspace-progress td::before{content:attr(data-label);font-size:12px;color:var(--ws-muted);grid-row:1/3}.workspace-progress td>small{grid-column:2}.workspace-progress progress{grid-column:2}.workspace-progress td>button{justify-self:start}.workspace-main .card{padding:20px}.workspace-header .site-brand{font-size:20px}}
@media(max-width:380px){.workspace-metrics{grid-template-columns:1fr}.workspace-metric{display:flex;justify-content:space-between;gap:12px;align-items:center}.workspace-progress td{grid-template-columns:105px minmax(0,1fr)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Header controls share the homepage's icons and support dialog. */
.workspace-header .workspace-tools{gap:12px;align-items:center}
.workspace-header .workspace-disclaimer{display:inline-flex;align-items:center;min-height:38px;white-space:nowrap;font-size:12px}
.workspace-header #themeToggle{display:grid;place-items:center;width:34px;height:34px;min-height:34px;flex:none;padding:0;border-radius:999px;font-size:14px;line-height:1}
.workspace-header #themeToggle::before{content:none}
.workspace-main button{line-height:1.35;vertical-align:middle}
.workspace-main .row{gap:12px;align-items:center}
.workspace-main .row>button,.workspace-filters button,.workspace-progress button{display:inline-flex;align-items:center;justify-content:center;text-align:center}
.workspace-main .row+ .row{margin-top:16px}
.workspace-main label:has(input[type=file]){min-width:0;max-width:100%}
.workspace-main input[type=file]{width:100%;max-width:100%;min-width:0}
@media(max-width:1000px){
 :root{--workspace-header:112px}
 .workspace-header{display:grid;grid-template-columns:minmax(0,1fr) auto;height:112px;min-height:112px;padding:10px 14px;gap:8px 12px;align-content:center}
 .workspace-header>.site-brand{grid-column:1;justify-self:start}
 .workspace-header>.brand,.workspace-header>.app-name{grid-column:2;justify-self:end;margin:0;padding:0;border:0}
 .workspace-header>span{display:none}
 .workspace-header .workspace-tools,.workspace-header .tools{grid-column:1/-1;width:100%;margin:0;display:flex;flex-wrap:nowrap;justify-content:space-between;gap:8px}
 .workspace-header .workspace-tools>.other-certifications{display:none}
 .workspace-header .workspace-tools>.workspace-disclaimer{display:inline-flex;font-size:11px}
 .workspace-header .site-brand-name{display:inline}
}

@media(max-width:700px){.workspace-main{padding-bottom:140px}}

/* Match typography across the two study headers. */
.workspace-header .site-brand{font-size:24px;line-height:1;font-weight:700}
.workspace-header .other-certifications{display:inline-flex;align-items:center;font-size:14px;line-height:1.4;font-weight:400;min-height:44px;padding:8px 10px}
.workspace-header .workspace-disclaimer{font-size:12px;line-height:1.4;font-weight:400}
.workspace-header .brand,.workspace-header .app-name{font-size:16px;line-height:1.4;font-weight:600}
.workspace-header .app-name b{font-weight:inherit}
@media(max-width:700px){
 .workspace-header .site-brand{font-size:20px}
 .workspace-header .brand,.workspace-header .app-name{font-size:14px}
 .workspace-header .workspace-disclaimer{font-size:11px}
}

.workspace-sidebar>.eyebrow{margin:0 0 16px;line-height:1.65}

/* Common component contract. App CSS owns only certification-specific readers. */
@font-face{font-family:"Study Inter";src:url('/assets/fonts/InterVariable.woff2') format('woff2');font-weight:100 900;font-style:normal;font-display:swap}
:root{
 --workspace-font-ui:"Study Inter","Hiragino Sans","Yu Gothic UI",Meiryo,system-ui,sans-serif;
 --font-ui:var(--workspace-font-ui);
 --paper:var(--ws-paper);--surface:var(--ws-paper);--ink:var(--ws-ink);--muted:var(--ws-muted);
 --rule:var(--ws-line);--line:var(--ws-line);--accent:var(--ws-accent);--light:var(--ws-selected);--selected:var(--ws-selected);
 --brand:var(--ws-accent);--info:var(--ws-accent);--on-accent:#fff;
}
:root[data-theme=dark]{--paper:var(--ws-paper);--surface:var(--ws-paper);--ink:var(--ws-ink);--muted:var(--ws-muted);--rule:var(--ws-line);--accent:var(--ws-accent);--brand:var(--ws-accent);--info:var(--ws-accent);--selected:var(--ws-selected);--on-accent:#11130f}
html body{font-family:var(--workspace-font-ui);font-size:15px;line-height:1.75;font-synthesis:none}
.workspace-header .site-brand,.workspace-header .brand,.workspace-header .app-name{font-family:var(--workspace-font-ui)}
.workspace-header .brand,.workspace-header .app-name{color:var(--ws-ink);padding-left:24px;border-left:1px solid var(--ws-line)}
.workspace-header .other-certifications{color:var(--ws-ink)}
.workspace-header .other-certifications:hover{color:var(--ws-accent)}
.workspace-header .workspace-disclaimer{color:#9b4219}
:root[data-theme=dark] .workspace-header .workspace-disclaimer{color:var(--ws-accent)}
.workspace-sidebar nav a{line-height:1.75;display:flex;align-items:center}
.workspace-sidebar .sidebar-note p{margin:0 0 16px}
.workspace-sidebar .sidebar-note a{color:var(--ws-accent)}
.workspace-main h1{font-size:30px;line-height:1.35;font-weight:600;letter-spacing:-.6px;margin:8px 0 12px}
.workspace-main h2{font-size:19px;line-height:1.5;font-weight:600;margin:0 0 16px}
.workspace-main h3{font-size:16px;line-height:1.5;font-weight:600;margin:0 0 12px}
.workspace-main p{margin:0 0 16px}
.workspace-main .eyebrow{font-size:11px;line-height:1.65;letter-spacing:.12em;font-weight:600;color:var(--ws-muted);margin:0 0 12px}
.workspace-main .subtitle,.workspace-main .small,.workspace-main .muted{font-size:13px;line-height:1.75;color:var(--ws-muted)}
.workspace-main a{color:var(--ws-accent)}
.workspace-main .card{padding:24px;margin:20px 0;border:1px solid var(--ws-line);border-radius:14px}
.workspace-main .hero h2{margin:12px 0 16px}
.workspace-main .badge{font-size:11px;line-height:1.5;border-radius:6px;padding:4px 9px;color:var(--ws-accent);background:var(--ws-selected)}
.workspace-main button:where(:not(.lesson,.choice)){font-size:14px;line-height:1.35;min-height:44px;border-radius:9px;padding:10px 16px;font-weight:500}
.workspace-main button.primary{color:var(--on-accent);background:var(--ws-accent);border-color:var(--ws-accent)}
.workspace-main button:disabled{opacity:.45;cursor:default}
.workspace-main .row>button{flex-grow:0}
.workspace-main .workspace-filters button,.workspace-main .group-filters button,.workspace-main .study-tabs button,.workspace-main .workspace-progress button,.workspace-main .question-grid button{font-size:12px;padding:8px 12px}
.workspace-main .workspace-filters,.workspace-main .group-filters{gap:8px;margin:16px 0 24px}
.workspace-main .workspace-search,.workspace-main .learn-search{padding:13px 16px;margin:12px 0 20px;font:inherit;line-height:1.5;border:1px solid var(--ws-line);border-radius:9px;background:var(--ws-paper);color:var(--ws-ink)}
.workspace-main label{font-size:13px;font-weight:500}
.workspace-main .controls,.workspace-main .setup{display:flex;align-items:flex-end;gap:16px;flex-wrap:wrap;margin:20px 0}
.workspace-main .controls>label,.workspace-main .setup>label{display:flex;flex-direction:column;gap:8px}
.workspace-main .controls select,.workspace-main .setup select{margin:0;min-height:44px;padding:10px 12px;border:1px solid var(--ws-line);border-radius:9px;background:var(--ws-paper);color:var(--ws-ink);font-size:14px;line-height:1.5}
.workspace-main textarea{background:var(--ws-paper);color:var(--ws-ink);border-color:var(--ws-line)}
.workspace-main .grid{gap:18px}
.workspace-main .skill{padding:24px;min-height:230px;gap:12px}
.workspace-main .skill h2{font-size:17px;margin:0 0 4px}
.workspace-main .skill button{margin-top:auto}
.workspace-main .skill p{margin:0}
.workspace-main .reader-side{top:calc(var(--workspace-header) + 20px);max-height:calc(100dvh - var(--workspace-header) - 40px)}
.workspace-main :is(button,input,select,textarea,a,summary):focus-visible{outline:3px solid var(--ws-accent);outline-offset:3px}
.workspace-main :is(details,h2,h3,[id]){scroll-margin-top:calc(var(--workspace-header) + 24px)}
.workspace-main :is(.feedback,.passage,.question-translation,.feedback-translation){border-radius:12px}
.workspace-main .feedback{font-size:14px;line-height:1.75;padding:20px;margin:24px 0}
.workspace-main .feedback h2{font-size:19px}
@media(max-width:1000px){.workspace-header .brand,.workspace-header .app-name{padding:0;border:0}}
@media(max-width:700px){
 .workspace-main h1{font-size:26px}
 .workspace-main .card{padding:20px}
 .workspace-main .hero{padding:22px}
 .workspace-main .grid{grid-template-columns:1fr;gap:14px}
 .workspace-main .skill{min-height:0;padding:20px}
 .workspace-main .controls>label,.workspace-main .setup>label{flex:1 1 140px;min-width:0}
 .workspace-main .controls select,.workspace-main .setup select{width:100%}
 .workspace-main .reader-side{position:static;max-height:none}
 .workspace-main :is(details,h2,h3,[id]){scroll-margin-top:240px}
}

.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.workspace-main .choice{line-height:1.75}
.workspace-main .choice.selected{border-width:1px;box-shadow:inset 0 0 0 1px var(--brand)}

.workspace-main .choice:disabled{opacity:1}
#toast,#notice{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);max-width:90vw;margin:0;background:var(--ws-ink);color:var(--ws-paper);padding:12px 20px;border-radius:9px;font:13px/1.5 var(--workspace-font-ui);z-index:20}
#toast:empty,#notice:empty{display:none}
dialog:not(.support-dialog){width:min(620px,94vw);max-height:90dvh;overflow:auto;border:1px solid var(--ws-line);padding:26px;border-radius:16px;color:var(--ws-ink);background:var(--ws-paper)}
dialog:not(.support-dialog) button{font:500 14px/1.35 var(--workspace-font-ui);min-height:44px;border-radius:9px;padding:10px 16px}
dialog:not(.support-dialog) .row{gap:12px}

.workspace-main .row+p,.workspace-main button+p,.workspace-main .setup+p{margin-top:16px}

/* Start/review choices share geometry across standalone and React workspaces. */
.journey-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:16px;margin:16px 0 24px}
.journey-grid .journey-card{margin:0;display:flex;flex-direction:column;align-items:flex-start;gap:10px;min-width:0}
.journey-card h3,.journey-card p{margin:0}.journey-card a,.journey-card button{min-height:44px;display:inline-flex;align-items:center}.journey-card a{margin-top:auto}
.journey-search{display:flex;align-items:center;gap:8px}.journey-search input{min-width:0;flex:1}.journey-search button{flex:none}
.workspace-main button:not(:disabled),.workspace-main summary{cursor:pointer}.workspace-main button:focus-visible,.workspace-main a:focus-visible,.workspace-main [tabindex="-1"]:focus{outline:2px solid var(--ws-accent);outline-offset:4px}
.workspace-main button:disabled{cursor:default;opacity:.55}.workspace-main textarea{resize:none;min-height:120px}
@media(max-width:700px){.support-floating-trigger{display:none!important}.journey-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.workspace-main *{scroll-behavior:auto!important;transition:none!important}}

.resize-none{resize:none}

html{scrollbar-width:auto;scrollbar-color:var(--ws-muted) var(--ws-canvas)}
@media(forced-colors:active){html{scrollbar-color:auto}}

.study-time-budget{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin:16px 0}.study-time-budget button{min-height:44px;padding:8px 16px;border:1px solid var(--ws-line);border-radius:9px;background:var(--ws-paper);color:var(--ws-ink);cursor:pointer}.study-time-budget button[aria-pressed=true]{border-color:var(--ws-accent);color:var(--ws-accent)}.study-time-budget p{flex-basis:100%;margin:0}.study-time-budget button:focus-visible{outline:2px solid var(--ws-accent);outline-offset:3px}