@import"https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&display=swap";.question-figures[data-v-e8a9a62a]{display:grid;gap:12px;margin:0 0 25px;min-width:0}.question-figure[data-v-e8a9a62a]{margin:0;padding:16px;border:1px solid var(--line);border-radius:12px;background:#fff}.question-image[data-v-e8a9a62a]{display:block;max-width:100%;max-height:340px;width:auto;height:auto;margin:auto;object-fit:contain}.question-caption[data-v-e8a9a62a]{margin-top:10px;text-align:center;color:var(--muted);font-size:12px}a[data-v-00089190]{display:inline}img[data-v-00089190]{display:inline-block;max-width:100%;height:auto;vertical-align:middle;margin:3px 2px}.underlined[data-v-00089190]{text-decoration:underline;text-underline-offset:4px}.blank-slot[data-v-00089190]{position:relative;display:inline-block;height:1.1em;margin:0 .25em;vertical-align:text-bottom;border-bottom:2px solid currentColor;opacity:.75}.blank-slot--numbered[data-v-00089190]{opacity:1;border-bottom-color:var(--green)}.blank-slot b[data-v-00089190]{position:absolute;left:50%;bottom:.1em;transform:translate(-50%);color:var(--green);font-size:.85em;font-weight:700;line-height:1}.question-content[data-v-1752cd8d]{font-size:18px;line-height:1.95;color:var(--ink);overflow-wrap:anywhere}.content-paragraph[data-v-1752cd8d]{margin:12px 0;white-space:pre-wrap}.content-table-scroll[data-v-1752cd8d]{max-width:100%;overflow-x:auto;margin:15px 0}.content-table[data-v-1752cd8d]{border-collapse:collapse;font-size:15px;min-width:100%}.content-table td[data-v-1752cd8d]{border:1px solid #d4ddd3;padding:9px 12px;min-width:75px;white-space:pre-wrap}.ink-preview[data-v-b7a311c3]{margin:12px 0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff}.ink-preview canvas[data-v-b7a311c3]{position:relative;z-index:1;display:block;width:100%;height:auto;aspect-ratio:1 / var(--page-ratio, .7)}.preview-paper[data-v-b7a311c3]{position:relative;container-type:inline-size}.ink-rows[data-v-b7a311c3]{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.ink-row[data-v-b7a311c3]{position:absolute;left:0;right:0;border-bottom:1px dashed #d5dbd3}.ink-row span[data-v-b7a311c3]{position:absolute;left:8px;top:6px;color:var(--green);font-size:13px;font-weight:700;opacity:.75}.ink-preview p[data-v-b7a311c3]{padding:12px;color:#9b6143;font-size:13px}.history-pagination[data-v-7a881d1b]{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin-top:22px}.history-pagination button[data-v-7a881d1b]{min-height:44px;padding:8px 12px;border:1px solid var(--line);border-radius:9px;color:var(--green);background:var(--paper);cursor:pointer;font-size:12px}.history-pagination button[data-v-7a881d1b]:disabled{color:var(--muted);background:transparent;cursor:default;opacity:.6}.history-pagination span[data-v-7a881d1b]{color:var(--muted);font:12px DM Mono,monospace}.choice-group[data-v-05f3b97e]{margin-top:22px}.choice-part[data-v-05f3b97e]{border:0;padding:0;margin:0 0 18px;min-width:0}.choice-part legend[data-v-05f3b97e]{margin-bottom:8px;font-size:14px;color:var(--muted)}.part-options[data-v-05f3b97e]{display:flex;flex-wrap:wrap;gap:10px}.part-options button[data-v-05f3b97e]{min-width:55px;min-height:48px;border:1px solid var(--line);background:transparent;color:var(--ink);border-radius:10px;font-weight:700;cursor:pointer}.part-options .selected[data-v-05f3b97e]{border-color:var(--green);background:var(--green-soft)}.part-options .correct[data-v-05f3b97e]{border:2px solid var(--green)}.choice-part p[data-v-05f3b97e]{font-size:13px;color:var(--green)}.group-submit[data-v-05f3b97e]{min-height:48px}.choice-part-block--sectioned[data-v-05f3b97e]{margin:0 0 16px;padding:16px 18px 4px;border:1px solid var(--line);border-radius:14px;background:#fbfaf7}.part-content[data-v-05f3b97e]{font-size:16px;line-height:1.7}.part-content[data-v-05f3b97e] .content-paragraph{margin:2px 0;padding-left:1.6em}.part-content[data-v-05f3b97e] .content-paragraph:first-child{margin:0 0 8px;padding-left:0;font-weight:600}.choice-part-block--sectioned .choice-part[data-v-05f3b97e]{margin:12px 0 14px}.choice-part-block--sectioned legend[data-v-05f3b97e]{font-size:12px}.ink-dialog[data-v-c5d5b793]{position:static;display:block;width:100%;max-width:none;max-height:none;margin:0;padding:0;border:0;color:inherit;background:transparent}.ink-dialog[data-v-c5d5b793]::backdrop{background:#152a2580}.ink-dialog--expanded[data-v-c5d5b793]{position:fixed;inset:max(10px,env(safe-area-inset-top)) 10px max(10px,env(safe-area-inset-bottom));width:auto;max-height:calc(100dvh - max(20px,env(safe-area-inset-top) + env(safe-area-inset-bottom)));z-index:100;overflow:auto;padding:18px;border:1px solid var(--line);border-radius:15px;background:var(--paper);box-shadow:0 0 0 100vmax #152a2580}.ink-pad[data-v-c5d5b793]{min-width:0;width:100%}.ink-toolbar[data-v-c5d5b793]{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:10px}.ink-toolbar button[data-v-c5d5b793],.ink-error button[data-v-c5d5b793]{min-height:44px;padding:8px 13px;border:1px solid #d8dfd5;border-radius:9px;color:var(--green);background:var(--paper);cursor:pointer;font-size:14px}.ink-toolbar button[aria-pressed=true][data-v-c5d5b793]{color:#fff;border-color:var(--green);background:var(--green)}.ink-toolbar button[data-v-c5d5b793]:disabled{opacity:.4;cursor:default}.ink-paper[data-v-c5d5b793]{position:relative;container-type:inline-size;border:1px solid #d9ded5;border-radius:12px;overflow:hidden;background:repeating-linear-gradient(#fff 0,#fff 31px,#e9eee5 32px)}.ink-paper.ink-paper--rows[data-v-c5d5b793]{background:#fff}.ink-rows[data-v-c5d5b793]{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.ink-row[data-v-c5d5b793]{position:absolute;left:0;right:0;border-bottom:1px dashed #d5dbd3}.ink-row span[data-v-c5d5b793]{position:absolute;left:10px;top:8px;color:var(--green);font-size:15px;font-weight:700;opacity:.75}.ink-canvas[data-v-c5d5b793]{position:relative;z-index:1}.ink-loading[data-v-c5d5b793]{z-index:2}.ink-canvas[data-v-c5d5b793]{display:block;width:100%;height:auto;aspect-ratio:1 / var(--page-ratio, .7);touch-action:none;cursor:crosshair;-webkit-user-select:none;user-select:none}.ink-paper--locked .ink-canvas[data-v-c5d5b793]{cursor:default}.ink-loading[data-v-c5d5b793]{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;color:var(--muted);background:#fffdf8d9;font-size:14px}.ink-status[data-v-c5d5b793]{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;color:var(--muted);font-size:12px}.ink-status label[data-v-c5d5b793]{display:flex;align-items:center;gap:6px;min-height:44px}.ink-status input[data-v-c5d5b793]{width:20px;height:20px;accent-color:var(--green)}.ink-status>span[data-v-c5d5b793]{align-self:center}.ink-hint[data-v-c5d5b793]{margin:0;color:var(--muted);font-size:12px;line-height:1.7}.ink-error[data-v-c5d5b793]{color:#a24f35;font-size:13px;line-height:1.7}.ink-dialog--expanded[data-v-c5d5b793]{height:auto}.ink-dialog--expanded .ink-pad[data-v-c5d5b793]{display:flex;flex-direction:column;min-height:100%}.ink-dialog--expanded .ink-paper[data-v-c5d5b793]{flex:1 1 auto;display:flex;flex-direction:column;container-type:inline-size}.ink-dialog--expanded .ink-canvas[data-v-c5d5b793]{flex:1 1 0;height:auto;aspect-ratio:auto;min-height:calc(var(--page-ratio, .7) * 100cqw)}.ink-dialog--expanded .ink-hint[data-v-c5d5b793]{display:none}.question-meta[data-v-e49c0a99]{flex-wrap:wrap}.question-source[data-v-e49c0a99],.question-chapter[data-v-e49c0a99]{color:var(--muted);font-size:12px}.question-chapter[data-v-e49c0a99]{margin:12px 0 0}.question-review-note[data-v-e49c0a99]{padding:12px 15px;border-radius:10px;background:#fff0d1;color:#865f2b;font-size:13px;line-height:1.7}.question-title--long[data-v-e49c0a99]{font-size:clamp(18px,1.6vw,22px);line-height:1.85;letter-spacing:0}.feedback-answer[data-v-e49c0a99],.feedback-explanation[data-v-e49c0a99]{white-space:pre-wrap;overflow-wrap:anywhere}.feedback-explanation[data-v-e49c0a99]{font-size:15px;line-height:1.95}.written-answer[data-v-e49c0a99],.question-reading[data-v-e49c0a99]{min-width:0}.written-answer[data-v-e49c0a99]{position:relative}.answer-mode[data-v-e49c0a99]{position:absolute;top:0;right:0;z-index:1;display:flex;padding:3px;border:1px solid var(--line);border-radius:12px;background:var(--paper)}.written-answer[data-v-e49c0a99] .ink-toolbar{padding-right:168px}.short-answer label[data-v-e49c0a99]{display:flex;align-items:center;min-height:46px}.answer-mode button[data-v-e49c0a99]{min-height:38px;padding:6px 12px;border:0;border-radius:9px;background:transparent;color:var(--muted);cursor:pointer;font-size:14px}.answer-mode button[aria-pressed=true][data-v-e49c0a99]{color:#fff;background:var(--green)}@media(max-width:520px){.answer-mode[data-v-e49c0a99]{position:static;width:fit-content;margin-bottom:10px}.written-answer[data-v-e49c0a99] .ink-toolbar{padding-right:0}}.answer-mode button[data-v-e49c0a99]:disabled{cursor:default}.ink-submit[data-v-e49c0a99]{min-height:48px;margin-top:18px;margin-bottom:5px}@media(min-width:900px)and (max-width:1250px)and (orientation:landscape){.practice-workspace--written[data-v-e49c0a99]{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:25px;align-items:start;margin-top:22px}.practice-workspace--written .question-title[data-v-e49c0a99]{margin-top:0;font-size:20px;line-height:1.8}}.progress-details .reset-button[data-v-67b91ed7]{display:block;margin:18px 0 0}.summary-bar[data-v-67b91ed7]{flex:1;max-width:220px;height:6px;overflow:hidden;border-radius:99px;background:var(--green-soft)}.summary-bar i[data-v-67b91ed7]{display:block;min-width:6px;height:100%;border-radius:inherit;background:var(--green)}.progress-panel[data-v-67b91ed7]{display:block;padding:0 18px}.progress-summary[data-v-67b91ed7]{display:flex;min-height:52px;justify-content:space-between;align-items:center;gap:12px;color:var(--green);cursor:pointer;list-style:none;font-size:13px}.progress-summary[data-v-67b91ed7]::-webkit-details-marker{display:none}.progress-toggle[data-v-67b91ed7]{display:inline-flex;align-items:center;gap:6px;flex-shrink:0;white-space:nowrap}.progress-chevron[data-v-67b91ed7]{display:block;flex-shrink:0}.progress-panel[open] .progress-chevron[data-v-67b91ed7]{transform:rotate(180deg)}.progress-details[data-v-67b91ed7]{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:16px 0 20px}.subject-progress-list[data-v-67b91ed7],.streak-card[data-v-67b91ed7]{margin-top:0}@media(max-width:520px){.progress-details[data-v-67b91ed7]{grid-template-columns:1fr}}.question-picker[data-v-a504590d]{margin:0 0 14px}.picker-bar[data-v-a504590d]{display:flex;align-items:stretch;min-height:48px;border:1px solid var(--line);border-radius:14px;background:var(--paper);box-shadow:0 2px 8px #1e23210a;overflow:hidden}.picker-step[data-v-a504590d]{flex:0 0 52px;border:0;color:var(--green);background:transparent;font-size:24px;line-height:1;cursor:pointer}.picker-step[data-v-a504590d]:disabled{color:var(--line);cursor:default}.picker-step[data-v-a504590d]:not(:disabled):hover{background:var(--green-soft)}.picker-toggle[data-v-a504590d]{flex:1;display:flex;align-items:center;gap:10px;min-width:0;padding:0 14px;border:0;border-inline:1px solid var(--line);color:var(--ink);background:transparent;cursor:pointer;font-size:15px;font-weight:600}.picker-toggle[aria-expanded=true][data-v-a504590d]{background:var(--green-soft)}.picker-icon[data-v-a504590d]{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;color:#fff;background:var(--green);font-size:14px}.picker-count[data-v-a504590d]{margin-left:auto;padding:3px 10px;border-radius:99px;color:var(--green);background:var(--green-soft);font-size:12px;font-weight:600}.picker-sheet[data-v-a504590d]{margin-top:8px;padding:12px;border:1px solid var(--line);border-radius:14px;background:var(--paper);box-shadow:var(--shadow)}.picker-grid[data-v-a504590d]{display:grid;grid-template-columns:repeat(auto-fill,minmax(56px,1fr));gap:8px;max-height:min(50vh,360px);overflow-y:auto}.picker-tile[data-v-a504590d]{position:relative;display:grid;place-items:center;align-content:center;gap:1px;min-height:52px;padding:4px;border:1px solid var(--line);border-radius:10px;color:var(--ink);background:transparent;cursor:pointer}.picker-tile[data-v-a504590d]:hover{border-color:var(--green)}.picker-tile strong[data-v-a504590d]{font-size:16px;font-weight:600}.picker-tile small[data-v-a504590d]{color:var(--muted);font-size:10px}.picker-tile--wrong[data-v-a504590d]:after,.legend-wrong[data-v-a504590d]{content:"";position:absolute;top:6px;right:6px;width:7px;height:7px;border-radius:50%;background:#e0805a}.picker-tile--current[data-v-a504590d]{border-color:var(--green);color:#fff;background:var(--green)}.picker-tile--current small[data-v-a504590d]{color:#ffffffd9}.picker-legend[data-v-a504590d]{position:relative;margin:10px 2px 0;padding-left:13px;color:var(--muted);font-size:11px}.legend-wrong[data-v-a504590d]{top:4px;left:0;right:auto}.theme-picker[data-v-46c2ad57]{position:relative;display:flex;align-items:center;flex-shrink:0;width:104px;height:44px}.theme-picker[data-v-46c2ad57]:before{content:"";position:absolute;top:5px;right:0;bottom:5px;left:0;border:1px solid var(--line);border-radius:17px;background:var(--paper);pointer-events:none}.theme-swatch[data-v-46c2ad57]{position:absolute;top:50%;left:10px;width:8px;height:8px;transform:translateY(-50%);border-radius:50%;background:var(--green);pointer-events:none}.theme-picker select[data-v-46c2ad57]{position:relative;-moz-appearance:none;appearance:none;-webkit-appearance:none;width:100%;height:44px;min-height:44px;padding:0 24px 0 25px;border:0;border-radius:17px;background:transparent;color:var(--muted);font:inherit;font-size:12px;cursor:pointer}.theme-picker option[data-v-46c2ad57]{color:var(--ink);background:var(--paper)}.theme-chevron[data-v-46c2ad57]{position:absolute;top:50%;right:8px;transform:translateY(-50%);color:var(--muted);pointer-events:none}.practice-welcome[data-v-efea41b3]{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:6px 0;margin-bottom:22px;min-height:106px}.welcome-date[data-v-efea41b3]{color:var(--muted);font-size:12px;margin:0 0 10px;letter-spacing:1px}.practice-welcome h1[data-v-efea41b3]{font-size:clamp(23px,3.4vw,30px);line-height:1.5;font-weight:650;margin:0 0 8px;letter-spacing:.5px}.welcome-note[data-v-efea41b3]{color:var(--muted);font-size:14px;line-height:1.6;margin:0}.welcome-art[data-v-efea41b3]{width:112px;height:92px;flex:0 0 auto}.practice-welcome--peach h1[data-v-efea41b3]{font-family:Songti SC,STSong,serif}.practice-welcome--lilac[data-v-efea41b3]{background:var(--green-soft);padding:17px 23px;border-radius:20px}@media(min-width:900px)and (orientation:landscape){.practice-welcome[data-v-efea41b3]{min-height:0;padding:0;margin-bottom:15px}.welcome-date[data-v-efea41b3],.welcome-note[data-v-efea41b3],.welcome-art[data-v-efea41b3]{display:none}.practice-welcome h1[data-v-efea41b3]{font-size:22px;margin:0}.practice-welcome--lilac[data-v-efea41b3]{padding:10px 18px}}@media(max-width:520px){.practice-welcome[data-v-efea41b3]{gap:4px;margin-bottom:15px}.practice-welcome h1[data-v-efea41b3]{font-size:21px}.welcome-art[data-v-efea41b3]{width:67px;height:70px}.welcome-note[data-v-efea41b3]{font-size:12px}.practice-welcome--lilac[data-v-efea41b3]{padding:15px}}.daily-goal[data-v-747ac44d]{display:flex;align-items:center;gap:15px;padding:18px 0;margin-top:20px;border-bottom:1px solid var(--line)}.goal-icon[data-v-747ac44d]{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;background:var(--green-soft);color:var(--green);font-size:26px;flex-shrink:0}.goal-copy[data-v-747ac44d]{min-width:0;flex:1}.goal-copy strong[data-v-747ac44d]{font-size:14px;font-weight:650}.goal-copy p[data-v-747ac44d]{margin:6px 0 0;color:var(--muted);font-size:12px;line-height:1.5}.goal-steps[data-v-747ac44d]{display:flex;gap:6px}.goal-steps i[data-v-747ac44d]{width:23px;height:6px;background:var(--theme-edge);border-radius:4px}.goal-steps .complete[data-v-747ac44d]{background:var(--green)}.goal-count[data-v-747ac44d]{color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}[data-theme=mint] .daily-goal[data-v-747ac44d]{background:var(--green-soft);padding:16px;border:0;border-radius:15px}[data-theme=mint] .goal-icon[data-v-747ac44d]{background:var(--paper)}@media(max-width:520px){.daily-goal[data-v-747ac44d]{gap:10px}.goal-steps[data-v-747ac44d]{gap:4px}.goal-steps i[data-v-747ac44d]{width:10px}.goal-copy strong[data-v-747ac44d]{font-size:13px}.goal-copy p[data-v-747ac44d]{font-size:11px}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(./KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(./KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(./KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(./KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(./KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(./KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(./KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(./KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(./KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(./KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(./KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(./KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(./KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(./KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(./KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(./KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(./KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(./KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(./KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(./KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(./KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(./KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(./KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(./KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(./KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(./KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(./KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(./KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(./KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(./KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(./KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(./KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(./KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(./KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(./KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(./KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(./KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(./KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(./KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(./KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(./KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(./KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(./KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(./KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(./KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(./KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(./KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(./KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(./KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(./KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(./KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(./KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(./KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(./KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(./KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(./KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(./KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(./KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(./KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,math,Times New Roman,serif;line-height:1.2;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.19.0"}.katex .katex-mathml{border:0;-webkit-clip-path:inset(50%);clip-path:inset(50%);height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.katex-newline{display:block}.katex .katex-base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .katex-base,.katex .katex-strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .katex-vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .katex-thinbox{display:inline-flex;flex-direction:row;max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .katex-hdashline,.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-rule,.katex .katex-underline .underline-line,.katex .mfrac .frac-line{min-height:1px}.katex .mspace{display:inline-block}.katex .katex-smash{display:inline;line-height:0}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.katex-inner,.katex .llap>.katex-inner,.katex .rlap>.katex-inner{position:absolute}.katex .clap>.katex-fix,.katex .llap>.katex-fix,.katex .rlap>.katex-fix{display:inline-block}.katex .llap>.katex-inner{right:0}.katex .clap>.katex-inner,.katex .rlap>.katex-inner{left:0}.katex .clap>.katex-inner>span{margin-left:-50%;margin-right:50%}.katex .katex-rule{border:0 solid;display:inline-block;position:relative}.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .katex-hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.katex-root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .katex-sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .katex-sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .katex-sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .katex-sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .katex-sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .katex-sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .katex-sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .katex-sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .katex-sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .katex-sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .katex-sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .katex-sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .katex-sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .katex-sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .katex-sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .katex-sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .katex-sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .katex-sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .katex-sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .katex-sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .katex-sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .katex-sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .katex-sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .katex-sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .katex-sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .katex-sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .katex-sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .katex-sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .katex-sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .katex-sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .katex-sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .katex-sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .katex-sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .katex-sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .katex-sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .katex-sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .katex-sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .katex-sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .katex-sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .katex-sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .katex-sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .katex-sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .katex-sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .katex-sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .katex-sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .katex-sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .katex-sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .katex-sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .katex-sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .katex-sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .katex-sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .katex-sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .katex-sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .katex-sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .katex-sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .katex-sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .katex-sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .katex-sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .katex-sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .katex-sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .katex-sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .katex-sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .katex-sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .katex-sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .katex-sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .katex-sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .katex-sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .katex-sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .katex-sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .katex-sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .katex-sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .katex-sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .katex-sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .katex-sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .katex-sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .katex-sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .katex-sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .katex-sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .katex-sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .katex-sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .katex-sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .katex-sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .katex-sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .katex-sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .katex-sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .katex-sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .katex-sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .katex-sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .katex-sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .katex-sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .katex-sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .katex-sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .katex-sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .katex-sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .katex-sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .katex-sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .katex-sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .katex-sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .katex-sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .katex-sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .katex-sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .katex-sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .katex-sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .katex-sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .katex-sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .katex-sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .katex-sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .katex-sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .katex-sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .katex-sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .katex-sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .katex-sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .katex-sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .katex-sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .katex-sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .katex-sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .katex-sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .katex-sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .katex-sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .katex-sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .katex-sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .katex-accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .katex-accent .accent-body{position:relative}.katex .katex-accent .accent-body:not(.accent-full){width:0}.katex .katex-overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .katex-stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .katex-stretchy:after,.katex .katex-stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .katex-sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .reflectbox{display:inline-block;transform:scaleX(-1)}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.katex-tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.katex-tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}:root{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,sans-serif;color:#27342f;background:#f7f3e9;font-synthesis:none;text-rendering:optimizeLegibility;--ink: #27342f;--muted: #5f6d65;--paper: #fffdf8;--line: #e8e1d4;--green: #2e6a55;--green-soft: #deeee3;--orange: #f28b50;--yellow: #f7c95d;--shadow: 0 18px 45px rgba(56, 61, 49, .09)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:#f7f3e9}button{font:inherit}button:focus-visible,a:focus-visible,textarea:focus-visible{outline:3px solid rgba(242,139,80,.45);outline-offset:3px}.app-shell{min-height:100svh;padding:0 clamp(18px,4vw,64px) 26px;background:radial-gradient(circle at 78% 3%,rgba(247,201,93,.26),transparent 24rem),linear-gradient(135deg,#f7f3e9,#f9f7f0 48%,#eef3e8)}.topbar{max-width:1440px;margin:0 auto;height:76px;display:flex;align-items:center;gap:24px;border-bottom:1px solid rgba(212,204,188,.55)}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-size:18px;font-weight:900;letter-spacing:-.03em}.brand-mark{display:grid;place-items:center;width:32px;height:32px;color:#fffaf1;background:var(--green);border-radius:11px 11px 11px 3px;font-size:16px;box-shadow:3px 4px #b8d2bc}.topbar-note{margin:0;color:var(--muted);font-size:13px;font-weight:600}.topbar-actions{display:flex;align-items:center;gap:8px;margin-left:auto;color:var(--muted);font-size:12px}.sync-dot{width:7px;height:7px;border-radius:99px;background:#75bc70;box-shadow:0 0 0 4px #75bc7024}.reset-button{margin-left:14px;padding:7px 10px;border:1px solid var(--line);border-radius:8px;color:var(--muted);background:#ffffff80;cursor:pointer;font-size:12px}.reset-button:hover{color:var(--ink);background:#fffdf8}.main-layout{max-width:1440px;margin:0 auto;display:grid;grid-template-columns:210px minmax(0,1fr) 286px;gap:clamp(22px,3vw,48px);padding:46px 0 28px}.subject-rail{padding-top:7px}.rail-label,.eyebrow{color:#756747;font-family:DM Mono,monospace;font-size:11px;letter-spacing:.08em;text-transform:uppercase}.rail-label{margin:0 0 18px 12px}.subject-pill{width:100%;display:flex;align-items:center;gap:11px;padding:11px 12px;border:0;border-radius:13px;color:var(--muted);background:transparent;text-align:left;cursor:pointer;transition:.2s ease}.subject-pill:hover{background:#fffdf8ad;color:var(--ink);transform:translate(3px)}.subject-pill--active{color:var(--ink);background:var(--paper);box-shadow:0 9px 22px #383d3112}.subject-icon{display:grid;place-items:center;flex:0 0 auto;width:34px;height:34px;border-radius:11px;color:var(--green);background:var(--green-soft);font-weight:900;font-size:16px}.subject-pill:nth-of-type(3) .subject-icon{color:#a86a2e;background:#fff0d1}.subject-pill:nth-of-type(4) .subject-icon{color:#436a9d;background:#e1ebfa}.subject-pill:nth-of-type(5) .subject-icon{color:#7a6b9f;background:#eee7fb}.subject-copy{display:grid;gap:2px;flex:1}.subject-copy strong{font-size:14px}.subject-copy small{color:#a0a7a0;font-size:11px}.subject-arrow{color:#b9beb7;font-size:21px;line-height:1}.content-column{min-width:0}.content-tabs{display:flex;align-items:center;gap:24px;margin-bottom:15px;border-bottom:1px solid var(--line)}.content-tab,.content-tabs button{padding:0 0 13px;border:0;color:#a3a79f;background:transparent;cursor:pointer;font-size:13px;font-weight:800;position:relative}.content-tabs button span{display:inline-grid;place-items:center;min-width:20px;height:20px;margin-left:5px;padding:0 5px;border-radius:6px;color:var(--green);background:var(--green-soft);font:11px DM Mono,monospace}.content-tabs button:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;border-radius:2px;background:transparent}.content-tabs button:hover,.content-tabs button.content-tab--active{color:var(--ink)}.content-tabs button.content-tab--active:after{background:var(--orange)}.practice-card,.history-panel{min-height:464px;border:1px solid rgba(228,220,207,.9);border-radius:22px;background:#fffdf8cc;box-shadow:var(--shadow);overflow:hidden}.practice-content{padding:clamp(24px,4vw,48px)}.question-meta{display:flex;align-items:center;gap:10px}.question-number{color:var(--green);font:12px DM Mono,monospace}.question-grade{padding:5px 9px;border-radius:99px;color:#a08f78;background:#f5efe2;font-size:11px}.question-title{max-width:730px;margin:29px 0 35px;font-size:clamp(21px,2.4vw,29px);line-height:1.5;letter-spacing:-.03em}.choice-list{display:grid;gap:11px;max-width:650px}.choice-button{display:flex;align-items:center;gap:12px;width:100%;min-height:53px;padding:13px 16px;border:1px solid var(--line);border-radius:13px;color:var(--ink);background:#ffffff75;text-align:left;cursor:pointer;transition:.18s ease}.choice-button:not(:disabled):hover{border-color:#a6c5ad;background:#f2f8f0;transform:translate(4px)}.choice-button:disabled{cursor:default}.choice-button--correct{border-color:#8bc29a;color:#2a6b4e;background:#e8f5e8}.choice-button--wrong{border-color:#eeb39c;color:#a55435;background:#fff0e9}.choice-dot{width:11px;height:11px;border:2px solid #c6cbbf;border-radius:50%}.choice-button--correct .choice-dot{border-color:#4d9a69;background:#4d9a69}.choice-button--wrong .choice-dot{border-color:#d67e59;background:#d67e59}.choice-mark{margin-left:auto;font-weight:900}.short-answer{max-width:650px;display:grid;gap:10px}.short-answer label{color:var(--muted);font-size:13px;font-weight:700}.short-answer textarea{resize:vertical;width:100%;padding:14px;border:1px solid var(--line);border-radius:13px;color:var(--ink);background:#fffefa;font:inherit;line-height:1.6}.primary-button{width:fit-content;padding:11px 17px;border:0;border-radius:10px;color:#fffdf8;background:var(--green);cursor:pointer;font-weight:800;box-shadow:0 5px #1f503f;transition:.16s ease}.primary-button:hover:not(:disabled){background:#245b49;transform:translateY(-1px)}.primary-button:disabled{opacity:.46;cursor:not-allowed;box-shadow:none}.answer-button{margin-top:4px}.feedback-box{max-width:650px;margin-top:28px;padding:19px 20px 18px;border-radius:15px}.feedback-box--correct{color:#2b644b;background:#e8f5e8}.feedback-box--wrong{color:#8f553d;background:#fff0e8}.feedback-heading{display:flex;align-items:center;gap:8px;font-size:16px}.feedback-icon{display:grid;place-items:center;width:25px;height:25px;border-radius:50%;color:#fff;background:currentColor;font-size:14px}.feedback-box--correct .feedback-icon{color:#4f9b68}.feedback-box--wrong .feedback-icon{color:#d77d59}.feedback-answer{margin:13px 0 0;font-weight:800}.feedback-explanation{margin:10px 0 0;color:#68786c;font-size:13px;line-height:1.75}.knowledge-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:13px}.knowledge-row span{padding:4px 8px;border-radius:99px;color:#78817a;background:#ffffffb3;font-size:11px}.next-button{display:block;margin:19px 0 0 auto;padding:8px 0;border:0;color:var(--green);background:transparent;cursor:pointer;font-size:13px;font-weight:900}.next-button span{margin-left:5px;font-size:17px}.empty-practice{display:grid;place-items:center;align-content:center;min-height:464px;padding:40px;text-align:center}.empty-illustration{display:grid;place-items:center;width:78px;height:78px;margin-bottom:16px;border-radius:28px 28px 28px 8px;color:#fff;background:var(--green);font-size:38px;transform:rotate(-6deg)}.empty-practice h2{margin:0;font-size:23px}.empty-practice p{max-width:300px;margin:9px 0 0;color:var(--muted);font-size:13px;line-height:1.6}.progress-panel{align-self:start;padding:24px 21px;border:1px solid rgba(228,220,207,.9);border-radius:20px;background:#fffdf8b8;box-shadow:0 12px 30px #383d310b}.panel-heading,.section-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.panel-heading h2,.section-heading h2{margin:7px 0 0;font-size:18px;letter-spacing:-.04em}.accuracy-ring{display:grid;place-items:center;width:70px;height:70px;border-radius:50%;background:radial-gradient(circle at center,var(--paper) 56%,transparent 58%),conic-gradient(var(--orange) var(--progress),#ece6da 0)}.accuracy-ring strong{margin-top:4px;color:var(--green);font-size:19px;line-height:1}.accuracy-ring strong small{font-size:11px}.accuracy-ring span{margin-top:-19px;color:#a09a8c;font-size:9px}.subject-progress-list{display:grid;gap:19px;margin-top:28px}.progress-label{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px}.progress-label span{display:flex;align-items:center;gap:7px}.progress-label strong{color:var(--ink);font:11px DM Mono,monospace}.progress-dot{width:8px;height:8px;border-radius:50%}.progress-dot--green{background:#5a9d70}.progress-dot--orange{background:#e99755}.progress-dot--blue{background:#6794c5}.progress-dot--purple{background:#9a86be}.progress-track{height:6px;margin-top:8px;overflow:hidden;border-radius:99px;background:#eee9dd}.progress-fill{display:block;height:100%;border-radius:inherit}.progress-fill--green{background:#5a9d70}.progress-fill--orange{background:#e99755}.progress-fill--blue{background:#6794c5}.progress-fill--purple{background:#9a86be}.streak-card{display:flex;align-items:center;gap:10px;margin-top:29px;padding:12px;border-radius:13px;background:#fff2d0}.streak-card strong{display:block;color:#7e5d32;font-size:12px}.streak-card p{margin:2px 0 0;color:#a08254;font-size:10px}.history-panel{padding:clamp(24px,4vw,39px)}.history-count{color:var(--green);font:12px DM Mono,monospace}.history-list{display:grid;gap:8px;margin-top:28px}.history-row{display:flex;align-items:center;gap:12px;padding:12px;border-radius:12px;background:#f7f3e9a6}.history-state{display:grid;place-items:center;width:30px;height:30px;border-radius:10px;font-weight:900}.history-state--correct{color:#3f8158;background:#dff0df}.history-state--wrong{color:#b56b4e;background:#ffe3d5}.history-row strong{font-size:13px}.history-row p{margin:3px 0 0;color:var(--muted);font-size:11px}.history-row time{margin-left:auto;color:#aaa99f;font:10px DM Mono,monospace}.history-empty{display:grid;place-items:center;align-content:center;min-height:340px;color:#a4a79d;text-align:center}.history-empty span{font-size:42px;color:var(--yellow)}.history-empty p{max-width:280px;font-size:13px;line-height:1.7}.loading-card,.error-card{min-height:464px;display:grid;place-items:center;align-content:center;gap:8px;border:1px solid var(--line);border-radius:22px;background:#fffdf8cc;text-align:center}.loading-card p,.error-card p{margin:0;color:var(--muted);font-size:13px}.loading-spinner{width:30px;height:30px;border:3px solid #dfe9dc;border-top-color:var(--green);border-radius:50%;animation:spin .8s linear infinite}.error-card strong{font-size:18px}.error-card .primary-button{margin-top:12px}.app-footer{max-width:1440px;display:flex;justify-content:center;gap:10px;margin:0 auto;padding-top:4px;color:#aaa99f;font:10px DM Mono,monospace}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:1100px){.main-layout{grid-template-columns:175px minmax(0,1fr)}.progress-panel{grid-column:2}.subject-rail{grid-row:span 2}.progress-panel{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px}.subject-progress-list{margin-top:0}.streak-card{margin-top:0;align-self:end}}@media(max-width:760px){.app-shell{padding-inline:15px}.topbar{height:64px;gap:13px}.topbar-note{display:none}.topbar-actions{font-size:10px}.reset-button{margin-left:6px;padding:6px 7px}.main-layout{display:flex;flex-direction:column;gap:18px;padding-top:27px}.subject-rail{display:flex;gap:7px;overflow-x:auto;padding:0 1px 4px}.rail-label,.subject-pill{flex:0 0 auto;width:auto;min-width:122px;padding:8px}.subject-pill .subject-copy small,.subject-arrow{display:none}.subject-icon{width:29px;height:29px;border-radius:9px}.subject-copy strong{font-size:13px}.content-tabs{margin-bottom:10px}.practice-card,.history-panel{min-height:500px;border-radius:18px}.practice-content{padding:23px 18px}.question-title{margin:23px 0 27px;font-size:21px}.choice-button{min-height:55px}.progress-panel{display:block;padding:20px 17px}.subject-progress-list{margin-top:25px}.streak-card{margin-top:24px}.app-footer{padding-bottom:max(4px,env(safe-area-inset-bottom))}}@media(max-width:420px){.topbar-actions>span:not(.sync-dot){display:none}.brand{font-size:16px}.history-row time{display:none}}.assessment-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}.secondary-button{min-height:44px;padding:10px 16px;border:1px solid #b4c8b9;border-radius:10px;color:var(--green);background:var(--paper);cursor:pointer}.history-row{align-items:flex-start}.history-detail{min-width:0;flex:1}.history-detail p{line-height:1.7;overflow-wrap:anywhere;white-space:pre-wrap}.history-detail summary{margin-top:8px;color:var(--green);cursor:pointer;font-size:12px}.history-restore{min-height:44px;margin-top:6px;padding:8px 0;border:0;color:var(--green);background:transparent;cursor:pointer;font-size:12px;font-weight:800}.subject-pill:nth-of-type(2) .subject-icon{color:#a86a2e;background:#fff0d1}.subject-pill:nth-of-type(3) .subject-icon{color:#436a9d;background:#e1ebfa}.subject-pill:nth-of-type(4) .subject-icon{color:#7a6b9f;background:#eee7fb}.feedback-icon{background:transparent}.question-title{white-space:pre-wrap}.content-tabs button,.reset-button{min-height:44px}.app-footer{flex-wrap:wrap;text-align:center}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}.sync-dot--error{background:#c75e39}.save-warning{max-width:1440px;margin:15px auto 0;padding:12px 16px;border-radius:10px;background:#ffe3d5;color:#8f553d;font-size:14px}@media(max-width:1250px){.app-shell{padding-inline:clamp(12px,3vw,28px)}.topbar{height:64px;gap:16px}.main-layout{display:flex;flex-direction:column;gap:14px;padding-top:18px}.subject-rail{display:flex;gap:8px;overflow-x:auto;padding:2px}.rail-label,.subject-arrow{display:none}.subject-pill{flex:1 0 0;min-width:0;min-height:52px;width:auto;padding:8px 12px}.subject-copy{min-width:0}.subject-pill .subject-copy small{display:block;font-size:10px}.subject-icon{width:30px;height:30px}.content-tabs{margin-bottom:12px}.practice-content{padding:clamp(20px,3vw,30px)}.practice-card,.history-panel{min-height:0}.question-title{margin:22px 0;font-size:21px;line-height:1.75;letter-spacing:0}.progress-panel{width:100%}.short-answer textarea{font-size:16px}}@media(max-width:520px){.topbar-note{display:none}.subject-pill{flex:0 0 auto;min-width:90px;padding:8px;gap:7px}.subject-icon{width:25px;height:25px;font-size:14px}.subject-copy strong{font-size:13px}.practice-content{padding:20px 15px}}.subject-copy small,.content-tab,.content-tabs button,.history-row time,.app-footer{color:#5f6d65}.question-grade,.accuracy-ring span{color:#756747}.feedback-explanation{color:#586b5d}.knowledge-row span{color:#5f6d65}.streak-card p{color:#805f32}.history-empty{color:#5f6d65}.math-inline .katex{font-size:1.08em}:root,:root[data-theme=peach]{color-scheme:light;--page: #fcf6f0;--paper: #fffdfa;--ink: #3e3030;--muted: #7d6866;--line: #ebddd5;--green: #aa4c56;--green-soft: #f9e8e6;--theme-edge: #e7bdc0;--neutral: #f5eeea;--orange: #aa4c56;--yellow: #c39354;--shadow: 0 10px 36px #6c443409}:root[data-theme=lilac]{--page: #f5f3fa;--paper: #fffeff;--ink: #332f47;--muted: #736c85;--line: #e3deed;--green: #6853a1;--green-soft: #ece7f7;--theme-edge: #cec2e7;--neutral: #f1eff6;--orange: #6853a1;--yellow: #a58a48;--shadow: 0 10px 36px #4d367709}:root[data-theme=mint]{--page: #f1f7f5;--paper: #fdfffe;--ink: #243c3a;--muted: #5b746f;--line: #d8e6e1;--green: #276f69;--green-soft: #e0efeb;--theme-edge: #b4d5cd;--neutral: #edf4f1;--orange: #276f69;--yellow: #a68d45;--shadow: 0 10px 36px #25493d09}:root{font-family:Avenir Next,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;color:var(--ink);background:var(--page)}body{background:var(--page)}button,select{touch-action:manipulation;-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--green);outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}.app-shell{padding:0 clamp(16px,4vw,36px) max(20px,env(safe-area-inset-bottom));background:var(--page)}.topbar,.main-layout,.app-footer,.save-warning,.theme-notice{max-width:1048px}.topbar{height:76px;gap:16px;border-color:var(--line)}.brand{gap:12px;font-size:22px;font-weight:650;letter-spacing:1px;flex-shrink:0}.brand-mark{width:40px;height:40px;border-radius:14px;box-shadow:none;background:var(--green);color:#fff}.brand-subtitle{display:block;margin-top:3px;color:var(--muted);font-size:10px;font-weight:400;letter-spacing:2px}.topbar-actions{gap:16px;font-size:12px}.save-status{display:flex;align-items:center;gap:7px;color:var(--muted);white-space:nowrap}.sync-dot{width:6px;height:6px;background:var(--green);box-shadow:none}.sync-dot--error{background:#a44b35}.theme-notice{margin:12px auto 0;color:var(--muted);font-size:12px;line-height:1.6}.main-layout{display:flex;flex-direction:column;gap:22px;padding:16px 0 24px}.subject-rail{display:flex;gap:9px;padding:0;overflow:visible}.rail-label,.rail-note,.subject-arrow{display:none}.subject-pill{flex:1;min-width:0;min-height:58px;padding:10px 12px;gap:8px;justify-content:center;border:1px solid transparent;border-radius:14px;transition:background-color .15s,border-color .15s}.subject-pill--active,.subject-pill--active:hover{color:var(--green);background:var(--green-soft);border-color:var(--theme-edge);box-shadow:none}.subject-rail .subject-pill .subject-icon{width:auto;height:auto;min-width:22px;border-radius:0;background:transparent;color:inherit;font-size:19px;font-weight:550}.subject-copy{display:flex;align-items:baseline;gap:7px;flex:0 1 auto}.subject-copy strong{font-size:16px;font-weight:650;white-space:nowrap}.subject-pill .subject-copy small{display:block;color:inherit;font-size:10px;white-space:nowrap}[data-theme=mint] .subject-pill--active{color:#fff;background:var(--green);border-color:var(--green)}.content-tabs{display:flex;gap:24px;border:0;margin-bottom:18px;min-height:44px}.content-tabs button{padding:0;min-height:44px;color:var(--muted);font-size:14px;font-weight:500}.content-tabs button.content-tab--active{color:var(--ink);font-weight:650}.content-tabs button.content-tab--active:after{bottom:0;background:var(--green)}.practice-card,.history-panel{min-height:0;border:1px solid var(--line);border-radius:22px;background:var(--paper);box-shadow:var(--shadow)}[data-theme=peach] .practice-card{border-left:5px solid var(--theme-edge);border-radius:6px 22px 22px 6px}[data-theme=lilac] .practice-card{border-top:3px solid var(--green)}[data-theme=mint] .practice-card{border-radius:17px}.practice-content{padding:25px 28px}.question-meta{gap:10px}.question-number{color:var(--muted);font:12px Avenir Next,PingFang SC,sans-serif;font-variant-numeric:tabular-nums}.question-grade{background:var(--green-soft);color:var(--green);border-radius:7px;padding:6px 10px}.question-source{margin-left:auto}.practice-content>.question-chapter+.question-chapter{font-size:11px}.question-title{max-width:none;margin:23px 0 25px;font-size:21px;font-weight:600;line-height:1.85;letter-spacing:.2px}.choice-list{max-width:none;gap:12px}.choice-button{min-height:62px;padding:12px 17px;gap:16px;font-size:18px;line-height:1.65;background:var(--paper);transition:background-color .15s,border-color .15s}.choice-list{counter-reset:choice}.choice-button{counter-increment:choice}.choice-list--lettered .choice-dot{display:grid;place-items:center;width:32px;height:32px;flex:0 0 auto;border:0;border-radius:50%;background:var(--neutral);color:var(--muted);font-size:14px;font-weight:600}.choice-list--lettered .choice-dot:before{content:counter(choice,upper-alpha)}.choice-button--correct .choice-dot{color:#276144;background:#d7eddf}.choice-button--wrong .choice-dot{color:#984426;background:#f9dfd2}.primary-button{min-height:44px;background:var(--green);color:#fff;box-shadow:none;font-weight:600}.primary-button:hover:not(:disabled){background:var(--green);filter:brightness(.94);transform:none}.secondary-button{border-color:var(--theme-edge)}.short-answer textarea{background:var(--paper)}.question-content .content-table-scroll .content-table td,.ink-pad .ink-toolbar button,.ink-pad .ink-error button{border-color:var(--line)}.ink-pad .ink-toolbar button[aria-pressed=true]{border-color:var(--green)}.ink-pad .ink-paper{border-color:var(--line);background:repeating-linear-gradient(white 0,white 31px,var(--line) 32px)}.ink-pad .ink-loading{background:var(--paper)}.feedback-box{max-width:none}.feedback-explanation{color:var(--ink)}.knowledge-row span{color:var(--muted);background:var(--paper)}.next-button{min-height:44px;padding:9px 16px;border-radius:10px;color:#fff;background:var(--green);font-weight:600}.progress-panel{align-self:stretch;width:100%;border-color:var(--line);background:transparent;box-shadow:none}.eyebrow{color:var(--muted);font-family:inherit}.accuracy-ring{background:radial-gradient(circle at center,var(--paper) 56%,transparent 58%),conic-gradient(var(--green) var(--progress),var(--neutral) 0)}.accuracy-ring span{color:var(--muted)}.progress-track{background:var(--neutral)}.streak-card{background:var(--green-soft)}.streak-icon{color:var(--green);background:var(--paper)}.streak-card strong{color:var(--green)}.streak-card p{color:var(--muted)}.history-row{background:var(--neutral)}.history-row time{color:var(--muted)}.history-empty{color:var(--muted)}.loading-card,.error-card{background:var(--paper)}.loading-spinner{border-color:var(--theme-edge);border-top-color:var(--green)}.app-footer{align-items:center;gap:6px 10px;color:var(--muted);font:11px Avenir Next,PingFang SC,sans-serif;line-height:1.8}.app-footer .reset-button{min-height:44px;margin:0;padding:7px 10px;font-size:11px;color:var(--muted);background:transparent}@media(hover:hover)and (pointer:fine){.subject-pill:hover{background:var(--green-soft);color:var(--green);transform:none}[data-theme=mint] .subject-pill--active:hover{background:var(--green);color:#fff}.choice-button:not(:disabled):hover{border-color:var(--green);background:var(--green-soft);transform:none}}@media(hover:none){.subject-pill:hover,.choice-button:not(:disabled):hover{transform:none}.subject-pill:not(.subject-pill--active):hover{background:transparent;color:var(--muted)}.choice-button:not(:disabled):hover{background:var(--paper);border-color:var(--line)}}@media(max-width:600px){.topbar{height:76px;gap:8px}.brand{gap:8px;font-size:18px}.brand-subtitle{font-size:8px;letter-spacing:1px}.brand-mark{width:34px;height:34px}.save-status{display:none}.topbar-actions{gap:0}.main-layout{gap:16px;padding-top:14px}.subject-rail{gap:4px}.subject-pill{padding:8px 3px;min-height:50px;gap:5px}.subject-copy strong{font-size:14px}.subject-pill .subject-icon{font-size:16px;min-width:17px}.subject-pill .subject-copy small{display:none}.content-tabs{gap:18px}.content-tabs button{font-size:13px}.practice-content{padding:22px 18px}.question-title{font-size:20px}.question-source{margin-left:0}.choice-button{font-size:17px}.app-footer>span{max-width:100%}}
