:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f6f6f6;--surface:#fff;--surface-2:#f2f2f2;--fg:#1d1d1d;--muted:#666;--line:#d9d9d9;--line-strong:#bdbdbd;--hover:#ececec;--rail:#161616;--rail-fg:#f2f2f2;--rail-muted:#a3a3a3;--accent:#6b46c1;--accent-fg:#fff;--accent-soft:#f1ecfb;--good:#0b7a43;--good-soft:#e7f5ed;--bad:#c42727;--bad-soft:#fcebeb;--part:#a35b00;--part-soft:#fdf3e3;--radius:6px}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#0e0e0e;--surface:#171717;--surface-2:#1f1f1f;--fg:#ececec;--muted:#9c9c9c;--line:#2e2e2e;--line-strong:#444;--hover:#262626;--rail:#000;--rail-fg:#ececec;--rail-muted:#8a8a8a;--accent:#a78bfa;--accent-fg:#120a24;--accent-soft:#221a35;--good:#4ade80;--good-soft:#10261a;--bad:#f87171;--bad-soft:#2c1414;--part:#fbbf24;--part-soft:#2b2110}}:root[data-theme=dark]{--lightningcss-light: 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0}.section-list{margin:0 0 20px;padding:0;list-style:none}.section-list li{border-bottom:1px solid var(--line);justify-content:space-between;gap:12px;padding:8px 0;display:flex}.mode-options{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px;display:grid}.mode-option{background:var(--surface-2);cursor:pointer;border-left:3px solid #0000;align-items:flex-start;gap:10px;padding:12px 14px;display:flex}.mode-option input{margin-top:2px}.mode-option>span{flex-direction:column;gap:2px;display:flex}.mode-option:has(input:checked){border-left-color:var(--accent);background:var(--accent-soft)}.attempt-layout{grid-template-columns:minmax(0,1fr) 240px;align-items:start;gap:24px;display:grid}.attempt-main{grid-area:1/1;min-width:0}.attempt-side{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);flex-direction:column;grid-area:1/2;gap:10px;padding:16px;display:flex;position:sticky;top:16px}.attempt-side 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var(--line-strong);border-radius:var(--radius);justify-content:center;align-items:center;padding:0;font-size:.85rem;font-weight:600;text-decoration:none;display:flex}.qnav-answered{color:var(--accent-fg);background:var(--accent);border-color:var(--accent)}.qnav-correct{color:var(--good);background:var(--good-soft);border-color:var(--good)}.qnav-wrong{color:var(--bad);background:var(--bad-soft);border-color:var(--bad)}.qnav-partial{color:var(--part);background:var(--part-soft);border-color:var(--part)}.qnav-ungraded{border-style:dashed}button.qnav-item[aria-current=true]{outline:2px solid var(--fg);outline-offset:1px}.legend{color:var(--muted);flex-wrap:wrap;gap:4px 12px;margin:0;padding:0;font-size:.8rem;list-style:none;display:flex}.legend li:before{content:"";vertical-align:-1px;border:1px 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6px}.question-meta{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;flex-wrap:wrap;gap:6px 14px;margin:0 0 6px;font-size:.8rem;font-weight:600;display:flex}.prompt{margin-bottom:14px;font-size:1.02rem}.prompt p{margin:0 0 8px}.question-feedback{border-top:1px solid var(--line);flex-direction:column;gap:14px;padding:14px 16px 16px;display:flex}.note p{margin:0 0 6px}.note-answer{border-left:3px solid var(--good);padding-left:12px}.self-score{margin:0}.self-score .button-row{margin-top:6px}.choices{border-top:1px solid var(--line);margin:0 0 10px;padding:0;list-style:none}.choice{border-bottom:1px solid var(--line);border-left:3px solid #0000;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:4px 12px;padding:9px 10px;display:flex}.choice 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label{flex-direction:column;gap:4px;display:flex}.field input[type=text]{width:100%;max-width:360px}.with-unit{align-items:center;gap:8px;display:flex}.ordering .choice{justify-content:flex-start}.ordering-item{flex:1;min-width:180px}.ordering-buttons{gap:6px;display:flex}.score-line{flex-wrap:wrap;align-items:baseline;gap:4px 12px;margin:0 0 14px;display:flex}.score-number{font-size:2.6rem;font-weight:700;line-height:1}.score-out-of{color:var(--muted);font-size:1.1rem;font-weight:600}.score-percent{color:var(--accent);margin-left:auto;font-size:1.6rem;font-weight:700}.score-panel .facts{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 0}details{border-top:1px solid var(--line)}details:last-of-type{border-bottom:1px solid var(--line)}summary{cursor:pointer;padding:10px 0}details[open]>summary{font-weight:600}details[open]{padding-bottom:16px}.panel details p{margin:10px 0}.save-bar{z-index:5;background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius);flex-wrap:wrap;align-items:center;gap:10px;margin:20px 0 0;padding:12px 16px;display:flex;position:sticky;bottom:12px;box-shadow:0 4px 16px #0000001f}.save-message{color:var(--good);font-weight:600}@media (width<=860px){.attempt-layout{grid-template-columns:1fr}.attempt-side{grid-column:1;position:static}.attempt-main{grid-row:2}}@media (width<=720px){.rail{top:0;border-right:0;border-bottom:1px solid var(--line);flex-direction:row;width:100%;padding:0 4px;position:sticky;inset:auto;overflow-x:auto}.rail .rail-logo{display:none}.rail ul{flex-direction:row}.rail a,.rail-theme{white-space:nowrap;border-bottom:3px solid #0000;border-left:0;width:auto;min-width:58px;padding:8px 6px;font-size:.68rem}.rail a[aria-current=page]{border-bottom-color:var(--accent)}.rail-theme{margin-top:0;margin-left:auto}.content{margin-left:0;padding:16px 16px 96px}.panel{padding:14px 16px}h1{font-size:1.45rem}.score-percent{margin-left:0}.choice label{min-width:0}}