:root{color-scheme:dark;--bg:#17191e;--surface:#21232a;--gold:#d1b566;--text:#c9cdd2;--muted:#949aa4;--border:#3c3e47}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.55 system-ui,sans-serif}header,main,footer{max-width:1100px;margin:auto;padding:24px}header{border-bottom:1px solid var(--border)}.brand{font-weight:800;letter-spacing:.14em;font-size:24px;color:var(--gold)}.brand span{font-size:12px;border-left:1px solid var(--border);margin-left:12px;padding-left:12px}header p{margin:5px 0}.fixture{font-size:12px;color:var(--muted)}h1{font-size:27px;margin:14px 0}h2{font-size:20px}h3{font-size:16px}p{margin:12px 0}.muted,footer{color:var(--muted);font-size:14px}.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:24px;margin:20px 0}.columns{display:grid;grid-template-columns:1.2fr 1fr;gap:20px}.columns .card{margin:0}button,input,select{font:inherit;border-radius:8px}button{background:var(--gold);color:#17191e;border:1px solid var(--gold);padding:10px 16px;font-weight:650;cursor:pointer}button.secondary{background:transparent;color:var(--text);border-color:var(--border)}button.danger{background:transparent;color:#e4aaa7;border-color:#815b59}button:disabled{opacity:.4;cursor:default}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #dfcc8b;outline-offset:3px}input[type=search],select{background:var(--bg);color:var(--text);border:1px solid var(--border);padding:11px;width:100%}input[type=checkbox],input[type=radio]{accent-color:var(--gold);width:18px;height:18px;vertical-align:middle;margin-right:8px}.row,.toolbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.toolbar{justify-content:space-between}.row select{width:auto}.searchbar{display:grid;gap:8px}.materials{display:grid;gap:12px;margin:20px 0}.material{border:1px solid var(--border);border-radius:10px;padding:16px}.material label{display:flex;gap:8px;align-items:flex-start;cursor:pointer}.material h3{margin:0}.material p{margin:4px 0}.pill{font-size:11px;color:var(--gold);letter-spacing:.05em;text-transform:uppercase}nav{display:flex;gap:10px;margin:20px 0}fieldset{border:0;padding:0;margin:24px 0}legend{font-size:14px;color:var(--muted);margin-bottom:12px}.alternative{display:flex;gap:10px;padding:16px;border:1px solid var(--border);border-radius:10px;margin:10px 0;cursor:pointer}.alternative:has(input:checked){border-color:var(--gold);background:#d1b56612}.stem{white-space:pre-wrap;font-size:19px}#answer{border-top:1px solid var(--border);margin-top:24px;padding-top:12px}#explanation p{white-space:pre-wrap}.navigation{margin-top:28px}#status{min-height:30px;color:var(--gold);white-space:pre-wrap}hr{border:0;border-top:1px solid var(--border);margin:28px 0}img{max-width:100%;max-height:360px;border-radius:8px}ul{padding-left:20px}footer{border-top:1px solid var(--border)}[hidden]{display:none!important}@media(max-width:720px){header,main,footer{padding:18px}.columns{grid-template-columns:1fr}.card{padding:18px}h1{font-size:24px}.toolbar button{font-size:14px}.row select{width:100%}}

.alternative-letter{font-weight:700;min-width:1.4em;color:var(--gold)}nav a{color:var(--gold);padding:10px 0}

:root{--text:var(--ink-900);--muted:var(--ink-500);--border:var(--ink-100);--gold:var(--gold-500)}body{font-family:var(--font-sans);background:var(--bg,var(--paper));color:var(--ink-900)}header,main,footer{max-width:860px}#study.question-card{margin-top:20px}.question{font-family:var(--font-serif);font-size:16.5px;line-height:1.62;color:var(--ink-900);margin:0}.alts{display:flex;flex-direction:column;gap:8px;border:0;padding:0}.alt input{position:absolute;opacity:0;width:1px;height:1px}.alt:has(input:focus-visible){outline:2px solid var(--gold-500)}.alt{cursor:pointer}.alt .alt-letter{grid-column:1}.alt .alt-text{grid-column:2}#explanation{font-family:var(--font-serif);font-size:15.25px;line-height:1.66;color:var(--ink-800)}#study-title{font-size:17px;color:var(--ink-500)}

/* Both modes use the real Prumo theme tokens; no dark surface in light mode. */
:root{color-scheme:light;--bg:var(--paper);--surface:var(--paper);--text:var(--ink-900);--muted:var(--ink-600);--border:var(--ink-200);--gold:var(--gold-700)}
html[data-theme="dark"]{color-scheme:dark;--bg:#17191e;--surface:#21232a;--gold:var(--gold-300)}
h1,h2,h3{color:var(--ink-900)}.brand,.pill,nav a,#status,.alternative-letter{color:var(--gold)}
button{background:var(--gold-500);border-color:var(--gold-500);color:#17191e}button.secondary{color:var(--ink-900);border-color:var(--ink-200)}
button.danger{color:var(--danger);border-color:var(--danger)}

#resolve{display:flex;justify-content:center;text-align:center}
html[data-theme="dark"] #study-title{color:var(--ink-700)}

header{display:flex;align-items:center;gap:14px;flex-wrap:wrap}header p{flex:1;min-width:180px}#theme{margin-left:auto}
.question-tools{display:grid;gap:14px;margin-top:22px}.study-panel{min-width:0;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px}.study-panel h2{font-size:16px;margin:0 0 10px}.study-panel label{display:block;margin:10px 0 6px;font-size:14px;color:var(--ink-700)}.study-panel textarea,.study-panel select{width:100%;max-width:100%;background:var(--bg);color:var(--ink-900);border:1px solid var(--border);border-radius:8px;padding:10px;font:inherit}.study-panel textarea{resize:vertical}.study-panel button{margin-top:8px}.resource-list{display:grid;gap:8px;min-width:0}.resource-item,.annotation{margin:0;padding:10px 12px;border-radius:8px;background:color-mix(in srgb,var(--gold-500) 8%,var(--surface));white-space:pre-wrap;overflow-wrap:anywhere}.annotation-author{display:block;margin-bottom:3px;color:var(--ink-500);font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.resource-list a{overflow-wrap:anywhere;color:var(--gold-700)}html[data-theme="dark"] .resource-list a{color:var(--gold-300)}.study-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.study-actions label{margin:0}.study-actions select{width:auto;min-width:180px;flex:1}.study-actions [aria-pressed="true"]{border-color:var(--gold-500);background:color-mix(in srgb,var(--gold-500) 18%,var(--surface))}
@media(max-width:560px){.study-panel{padding:13px}.study-actions>*{max-width:100%}.study-actions select{width:100%;flex-basis:100%}#study.question-card{padding:16px}}

#question-resources [hidden],#question-resources[hidden]{display:none!important}#question-resources>div+div{margin-top:18px}#question-resources h2{margin:0 0 8px}.alt-mark{margin-left:auto;font-size:13px;font-weight:700;white-space:nowrap}.alt-mark-ok{color:#3f8a52}.alt-mark-bad{color:#b4483c}