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32px}}:root{--p-bg:#fbf9f6;--p-surface:#fff;--p-surface-2:#f8fafc;--p-ink:#0f172a;--p-ink-2:#334155;--p-muted:#64748b;--p-border:#dbe4f0;--p-border-strong:#cbd5e1;--p-primary:#7d5b45;--p-primary-fg:#fff;--p-primary-tint:#f3ebe4;--p-accent:#111827;--p-accent-tint:#eef2ff;--p-success:#237a57;--p-danger:#ba1a1a;--radius-sm:8px;--radius:14px;--radius-lg:20px;--radius-xl:28px;--font-display:"Source Serif 4", Georgia, serif;--font-ui:"Source Serif 4", Georgia, serif;--font-mono:"Source Serif 4", Georgia, serif}.pal-indigo{--p-ink:oklch(18% .015 268);--p-ink-2:oklch(38% .012 268);--p-muted:oklch(58% .01 268);--p-primary:oklch(42% .14 268);--p-primary-tint:oklch(95% .025 268);--p-accent:oklch(72% .15 60);--p-accent-tint:oklch(96% .03 70)}.pal-plum{--p-primary:oklch(40% .13 330);--p-primary-tint:oklch(95% .025 330);--p-accent:oklch(72% .14 45);--p-accent-tint:oklch(96% .03 50)}.dark{--p-bg:oklch(18% .012 175);--p-surface:oklch(22% .014 175);--p-surface-2:oklch(25% .014 175);--p-ink:oklch(97% 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.dot.active{background:var(--p-primary)}.mathema-app .steps .dot.done{background:var(--p-primary);opacity:.5}.mathema-app .top-bar{color:var(--p-muted);justify-content:space-between;align-items:center;padding:8px 24px 0;font-size:13px;display:flex}.mathema-app .top-bar button{color:var(--p-muted);cursor:pointer;background:0 0;border:none;padding:8px 4px;font-family:inherit;font-size:13px;font-weight:500}.mathema-app .top-bar .back{justify-content:center;align-items:center;width:36px;height:36px;margin-left:-8px;display:flex}.mathema-app .eyebrow{font-family:var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--p-muted);font-size:11px;font-weight:500}.mathema-app .display{font-family:var(--font-display);letter-spacing:-.02em;color:var(--p-ink);margin:0;font-size:40px;font-weight:400;line-height:1.05}.mathema-app .display em{color:var(--p-primary);font-style:italic}.mathema-app .title{font-family:var(--font-display);letter-spacing:-.015em;color:var(--p-ink);margin:0;font-size:30px;font-weight:400;line-height:1.1}.mathema-app .subtitle{color:var(--p-ink-2);text-wrap:pretty;margin:8px 0 0;font-size:15px;line-height:1.45}.mathema-app .caption{color:var(--p-muted);font-size:12.5px;line-height:1.45}.mathema-app .btn{background:var(--p-primary);width:100%;height:54px;color:var(--p-primary-fg);letter-spacing:-.005em;cursor:pointer;border:1px solid #0000;border-radius:14px;justify-content:center;align-items:center;gap:10px;font-family:inherit;font-size:16px;font-weight:600;transition:transform .12s,opacity .12s;display:flex}.mathema-app .btn:hover{opacity:.95}.mathema-app .btn:active{transform:scale(.99)}.mathema-app .btn:disabled{cursor:not-allowed}.mathema-app .btn.ghost{color:var(--p-ink-2);border-color:var(--p-border-strong);background:0 0}.mathema-app .btn.outline{background:var(--p-surface);color:var(--p-ink);border-color:var(--p-border-strong)}.mathema-app .btn.text{color:var(--p-ink-2);background:0 0;border:none;height:44px;font-weight:500}.mathema-app .field{flex-direction:column;gap:6px;display:flex}.mathema-app .field label{color:var(--p-ink-2);letter-spacing:-.005em;font-size:12px;font-weight:600}.mathema-app .field input,.mathema-app .field select{border:1px solid var(--p-border-strong);background:var(--p-surface);width:100%;height:52px;color:var(--p-ink);border-radius:12px;outline:none;padding:0 16px;font-family:inherit;font-size:16px;transition:border-color .15s,box-shadow .15s}.mathema-app .field input:focus,.mathema-app .field select:focus{border-color:var(--p-primary);box-shadow:0 0 0 4px var(--p-primary-tint)}.mathema-app .card{background:var(--p-surface);border:1px solid var(--p-border);border-radius:16px;padding:16px}.mathema-app .option-card{background:var(--p-surface);border:1.5px solid var(--p-border);cursor:pointer;text-align:left;width:100%;color:inherit;appearance:none;border-radius:16px;align-items:flex-start;gap:14px;padding:16px;font-family:inherit;transition:border-color .15s,background .15s;display:flex}.mathema-app .option-card:hover{border-color:var(--p-border-strong)}.mathema-app .option-card.selected{border-color:var(--p-primary);background:var(--p-primary-tint)}.mathema-app .option-card:disabled{cursor:not-allowed;opacity:1}.mathema-app .option-card .check{border:1.5px solid var(--p-border-strong);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:22px;height:22px;margin-top:2px;display:flex}.mathema-app .option-card.selected .check{background:var(--p-primary);border-color:var(--p-primary);color:var(--p-primary-fg)}.mathema-app .chip{background:var(--p-surface-2);color:var(--p-ink-2);border:1px solid var(--p-border);border-radius:999px;align-items:center;gap:6px;padding:6px 10px;font-size:12px;font-weight:500;display:inline-flex}.mathema-app .chip.accent{background:var(--p-accent-tint);color:var(--p-ink);border-color:#0000}.mathema-app .chip.primary{background:var(--p-primary-tint);color:var(--p-primary);border-color:#0000}.mathema-app .grade-grid{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.mathema-app .grade-pill{border:1.5px solid var(--p-border);background:var(--p-surface);cursor:pointer;border-radius:14px;flex-direction:column;justify-content:center;align-items:center;height:64px;transition:all .15s;display:flex}.mathema-app .grade-pill .num{font-family:var(--font-display);color:var(--p-ink);font-size:24px;line-height:1}.mathema-app .grade-pill .lbl{color:var(--p-muted);letter-spacing:.04em;margin-top:4px;font-size:10.5px}.mathema-app .grade-pill.selected{border-color:var(--p-primary);background:var(--p-primary-tint)}.mathema-app .grade-pill.selected .num,.mathema-app .grade-pill.selected .lbl{color:var(--p-primary)}.mathema-app .choice{border:1.5px solid var(--p-border);background:var(--p-surface);cursor:pointer;border-radius:14px;align-items:center;gap:12px;padding:14px;transition:all .12s;display:flex}.mathema-app .choice:hover{border-color:var(--p-border-strong)}.mathema-app .choice .letter{border:1.5px solid var(--p-border-strong);width:28px;height:28px;font-family:var(--font-mono);color:var(--p-ink-2);border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;font-size:13px;font-weight:600;display:flex}.mathema-app .choice .text{font-size:15px;font-family:var(--font-mono);color:var(--p-ink)}.mathema-app .choice.selected{border-color:var(--p-primary);background:var(--p-primary-tint)}.mathema-app .choice.selected .letter{background:var(--p-primary);border-color:var(--p-primary);color:var(--p-primary-fg)}.mathema-app .choice.correct{border-color:var(--p-success);background:oklch(96% .04 155)}.mathema-app .choice.correct .letter{background:var(--p-success);border-color:var(--p-success);color:#fff}.mathema-app .hero-glyph{aspect-ratio:1.1;background:var(--p-primary);width:100%;color:var(--p-primary-fg);border-radius:28px;position:relative;overflow:hidden}.mathema-app .hero-glyph .grid-bg{background-image:linear-gradient(90deg,#ffffff12 1px,#0000 1px),linear-gradient(#ffffff12 1px,#0000 1px);background-size:28px 28px;position:absolute;inset:0}.mathema-app .toggle{background:var(--p-border-strong);cursor:pointer;border-radius:999px;flex-shrink:0;width:44px;height:26px;transition:background .15s;position:relative}.mathema-app .toggle:after{content:"";background:#fff;border-radius:50%;width:20px;height:20px;transition:transform .15s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #00000026}.mathema-app .toggle.on{background:var(--p-primary)}.mathema-app .toggle.on:after{transform:translate(18px)}.mathema-app .consent-row{border-bottom:1px solid var(--p-border);gap:14px;padding:14px 0;display:flex}.mathema-app .consent-row:last-child{border-bottom:none}.mathema-app .consent-row .ck{border:1.5px solid var(--p-border-strong);cursor:pointer;border-radius:7px;flex-shrink:0;justify-content:center;align-items:center;width:22px;height:22px;margin-top:2px;display:flex}.mathema-app .consent-row .ck.checked{background:var(--p-primary);border-color:var(--p-primary);color:var(--p-primary-fg)}.mathema-app .consent-row .info{flex:1;min-width:0}.mathema-app .consent-row .info .name{color:var(--p-ink);align-items:center;gap:8px;font-size:14.5px;font-weight:600;display:flex}.mathema-app .consent-row .info .desc{color:var(--p-muted);margin-top:4px;font-size:12.5px;line-height:1.45}.mathema-app .req-pill{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;background:var(--p-surface-2);color:var(--p-muted);border:1px solid var(--p-border);border-radius:4px;padding:2px 6px;font-size:9.5px}.mathema-app .mastery-row{align-items:center;gap:12px;padding:10px 0;display:flex}.mathema-app .mastery-row .label{width:110px;color:var(--p-ink-2);font-size:13px;font-weight:500}.mathema-app .mastery-row .track{background:var(--p-surface-2);border-radius:4px;flex:1;height:8px;position:relative;overflow:hidden}.mathema-app .mastery-row .fill{background:var(--p-primary);border-radius:4px;height:100%}.mathema-app .mastery-row .value{text-align:right;width:36px;font-family:var(--font-mono);color:var(--p-ink-2);font-size:12px;font-weight:500}.mathema-app .math{font-family:var(--font-mono);letter-spacing:-.005em;color:var(--p-ink);font-size:15px}.mathema-app .math-big{font-family:var(--font-mono);color:var(--p-ink);letter-spacing:-.01em;font-size:22px}.mathema-app .tabbar{background:var(--p-surface);border-top:1px solid var(--p-border);grid-template-columns:repeat(6,minmax(0,1fr));padding:6px 4px 8px;display:grid}.mathema-app .tabbar .tab{color:var(--p-muted);cursor:pointer;flex-direction:column;align-items:center;gap:3px;padding:6px 4px;font-size:10.5px;font-weight:500;display:flex}.mathema-app .tabbar .tab .icon{justify-content:center;align-items:center;width:22px;height:22px;display:flex}.mathema-app .tabbar .tab.active{color:var(--p-primary)}.mathema-app .app-head{justify-content:space-between;align-items:center;padding:18px 22px 8px;display:flex}.mathema-app .app-head .greet{flex:1;min-width:0}.mathema-app .app-head .greet .hello{color:var(--p-muted);letter-spacing:.02em;font-size:12px}.mathema-app .app-head .greet .name{font-family:var(--font-display);letter-spacing:-.01em;font-size:24px;line-height:1.1}.mathema-app .app-head .greet .name em{color:var(--p-primary);font-style:italic}.mathema-app .app-head .avatar{background:var(--p-primary);width:40px;height:40px;color:var(--p-primary-fg);font-family:var(--font-display);border-radius:50%;justify-content:center;align-items:center;font-size:18px;font-style:italic;display:flex}.mathema-app .stat-grid{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}.mathema-app .stat{background:var(--p-surface);border:1px solid var(--p-border);border-radius:14px;padding:12px 14px}.mathema-app .stat .k{letter-spacing:.06em;color:var(--p-muted);font-size:10.5px;font-family:var(--font-mono);text-transform:uppercase}.mathema-app .stat .v{font-family:var(--font-display);color:var(--p-ink);letter-spacing:-.01em;margin-top:6px;font-size:24px;line-height:1.1}.mathema-app .stat .v.italic{font-style:italic}.mathema-app .stat .delta{font-family:var(--font-mono);color:var(--p-success);margin-top:2px;font-size:11px}.mathema-app .stat .delta.down{color:var(--p-danger)}.mathema-app .section-h{justify-content:space-between;align-items:baseline;margin:14px 0 8px;padding:4px 0;display:flex}.mathema-app .section-h .label{color:var(--p-ink);font-size:13.5px;font-weight:600}.mathema-app .section-h .more{color:var(--p-muted);cursor:pointer;font-size:12px}.mathema-app .plan-card{background:var(--p-surface);border:1px solid var(--p-border);border-radius:14px;align-items:center;gap:12px;padding:14px;display:flex}.mathema-app .plan-card .badge{width:44px;height:44px;font-family:var(--font-display);border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;font-size:22px;font-style:italic;display:flex}.mathema-app .plan-card .info{flex:1;min-width:0}.mathema-app .plan-card .info .ttl{color:var(--p-ink);font-size:14px;font-weight:600}.mathema-app .plan-card .info .sub{color:var(--p-muted);margin-top:2px;font-size:12px}.mathema-app .heatmap{grid-template-columns:repeat(12,1fr);gap:3px;display:grid}.mathema-app .heatmap .cell{aspect-ratio:1;background:var(--p-surface-2);border-radius:3px}.mathema-app .heatmap .cell.l1{background:oklch(from var(--p-primary) l c h / .25)}.mathema-app .heatmap .cell.l2{background:oklch(from var(--p-primary) l c h / .5)}.mathema-app .heatmap .cell.l3{background:var(--p-primary)}.mathema-app .viz-frame{background:var(--p-surface);border:1px solid var(--p-border);border-radius:18px;padding:18px;position:relative;overflow:hidden}.mathema-app .viz-frame .viz-bg{background-image:linear-gradient(90deg,oklch(92% .005 90/.5) 1px,#0000 1px),linear-gradient(oklch(92% .005 90/.5) 1px,#0000 1px);background-size:24px 24px;position:absolute;inset:0}.mathema-app .prob-head{border-bottom:1px solid var(--p-border);justify-content:space-between;align-items:center;padding:12px 22px;display:flex}.mathema-app .timer{font-family:var(--font-mono);color:var(--p-ink);letter-spacing:.02em;font-size:16px;font-weight:600}.mathema-app .step-pill{background:var(--p-primary-tint);color:var(--p-primary);font-size:11px;font-weight:600;font-family:var(--font-mono);letter-spacing:.06em;border-radius:999px;align-items:center;gap:6px;padding:6px 10px;display:flex}.mathema-app .guide-tabs{gap:6px;padding:12px 0 14px;display:flex}.mathema-app .guide-tab{text-align:center;background:var(--p-surface-2);color:var(--p-ink-2);cursor:pointer;border-radius:10px;flex:1;padding:8px 0;font-size:11.5px;font-weight:600}.mathema-app .guide-tab.active{background:var(--p-primary);color:var(--p-primary-fg)}.mathema-app .sheet-backdrop{z-index:10;background:oklch(18% .012 175/.35);position:absolute;inset:0}.mathema-app .bottom-sheet{background:var(--p-surface);z-index:11;border-radius:24px 24px 0 0;flex-direction:column;max-height:72%;padding:12px 22px 18px;display:flex;position:absolute;bottom:0;left:0;right:0;box-shadow:0 -8px 24px oklch(0% 0 0/.06)}.mathema-app .bottom-sheet .grip{background:var(--p-border-strong);border-radius:2px;width:36px;height:4px;margin:0 auto 4px}.mathema-app .notes-grid{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}.mathema-app .note-card{background:var(--p-surface);border:1px solid var(--p-border);border-radius:14px;flex-direction:column;gap:8px;min-height:130px;padding:12px;display:flex}.mathema-app .note-card .src{font-family:var(--font-mono);letter-spacing:.05em;color:var(--p-muted);font-size:10px}.mathema-app .note-card .body{font-size:12.5px;font-family:var(--font-mono);color:var(--p-ink);max-height:56px;line-height:1.4;overflow:hidden}.mathema-app .note-card .foot{justify-content:space-between;align-items:center;margin-top:auto;display:flex}.mathema-app .status-chip{font-size:10.5px;font-weight:600;font-family:var(--font-mono);letter-spacing:.04em;border-radius:999px;align-items:center;gap:4px;padding:2px 8px;display:inline-flex}.mathema-app .status-chip.pending{color:oklch(45% .12 70);background:oklch(96% .04 70)}.mathema-app .status-chip.analyzing{background:var(--p-primary-tint);color:var(--p-primary)}.mathema-app .status-chip.mastered{color:var(--p-success);background:oklch(95% .05 155)}.mathema-app .filter-row{-webkit-overflow-scrolling:touch;gap:6px;padding:4px 0 8px;display:flex;overflow-x:auto}.mathema-app .filter-row::-webkit-scrollbar{display:none}.mathema-app .filter-chip{background:var(--p-surface);border:1px solid var(--p-border);color:var(--p-ink-2);white-space:nowrap;cursor:pointer;border-radius:999px;flex-shrink:0;padding:6px 12px;font-size:12px}.mathema-app .filter-chip.active{background:var(--p-ink);color:var(--p-bg);border-color:var(--p-ink)}.mathema-app .fab{background:var(--p-primary);width:56px;height:56px;color:var(--p-primary-fg);box-shadow:0 8px 20px oklch(from var(--p-primary) l c h / .35);cursor:pointer;z-index:5;border-radius:18px;justify-content:center;align-items:center;display:flex;position:absolute;bottom:92px;right:22px}.mathema-app .achiev{border-bottom:1px dashed var(--p-border);align-items:center;gap:10px;padding:10px 0;display:flex}.mathema-app .achiev:last-child{border-bottom:none}.mathema-app .achiev .medal{background:var(--p-accent-tint);width:32px;height:32px;font-family:var(--font-display);color:var(--p-ink);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;font-size:14px;font-style:italic;display:flex}.mathema-viewport{background:var(--p-bg);justify-content:center;align-items:stretch;width:100%;max-width:100%;height:100dvh;display:flex;overflow:hidden}.mathema-phone{background:var(--p-bg);width:100%;height:100%;padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom);padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right);flex-direction:column;display:flex;position:relative;overflow:hidden}@media (width>=480px){.mathema-viewport{align-items:center;padding:24px 0;overflow-y:auto}.mathema-phone{width:min(428px,100vw - 32px);max-width:min(428px,100vw - 32px);height:min(892px,100vh - 48px);max-height:892px;box-shadow:0 24px 48px #00000014, 0 0 0 1px var(--p-border);border-radius:36px}}.edvera-main-app .student-grading-report{grid-template-columns:minmax(0,1fr);gap:16px;min-width:0;max-width:100%;display:grid}.edvera-main-app .student-grading-report-panel{gap:12px;min-width:0;display:grid}.edvera-main-app .feedback-style-bar{flex-wrap:wrap;align-items:center;gap:8px 12px;display:flex}.edvera-main-app .feedback-style-toggle{border:1px solid #dbe3ef;border-radius:999px;display:inline-flex;overflow:hidden}.edvera-main-app .feedback-style-toggle button{color:#475569;cursor:pointer;font:inherit;letter-spacing:.02em;background:#fff;border:0;padding:7px 12px;font-size:12px;font-weight:700}.edvera-main-app .feedback-style-toggle button.is-active{color:#1e3a8a;background:#eff6ff}.edvera-main-app .feedback-style-bar__hint,.edvera-main-app .feedback-style-bar__status,.edvera-main-app .feedback-style-bar__warning{color:#64748b;margin:0;font-size:12px;line-height:1.4}.edvera-main-app .feedback-style-bar__warning{color:#9a3412}.edvera-main-app .corrector-report 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