:root{--bg: #fff4ec;--bg-soft: #fff8f3;--surface: #ffffff;--surface-peach: #ffe7d6;--surface-peach-soft: #fff0e6;--ink: #111111;--ink-soft: #29231f;--muted: #7c6f66;--border: #ead6c8;--accent-peach: #d87954;--accent-blue: #9fc7df;--accent-green: #9fcab3;--accent-lavender: #c6b4e8;--accent-yellow: #efd48d;--accent-rose: #e7a1a6;--progress-bg: #f2ded2;--progress-fill: #111111;--tint-blue: #dcedf7;--tint-lavender: #ede9f8;--tint-rose: #fae6eb;--tint-peach: #fde8d8;--tint-green: #e0f0e8;--tint-yellow: #faf3da;--purple: #111111;--purple-light: #d87954;--purple-dark: #000000;--blue: #9fc7df;--blue-dark: #7aaec8;--green: #5fa87a;--green-dark: #3a7d56;--red: #d95c5c;--red-dark: #b84040;--amber: #c4882a;--amber-dark: #9c6e1a;--orange: #d87954;--cyan: #9fc7df;--logo-bg: #ffe7d6;--logo-ink: #111111;--card: var(--surface);--card2: var(--surface-peach);--text: var(--ink);--text-muted: var(--muted);--text-dim: rgba(124,111,102,.55);--radius: 20px;--radius-sm: 12px;--shadow: 0 4px 20px rgba(0,0,0,.06);--shadow-lg: 0 12px 40px rgba(0,0,0,.1);--transition: .18s ease;--font: "Atkinson Hyperlegible", "Nunito", system-ui, sans-serif;--font-display: "Fraunces", Georgia, serif;--font-mono: "JetBrains Mono", "Space Mono", monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;min-height:100dvh}body{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overscroll-behavior:none;color-scheme:light}.screen{min-height:100dvh;display:flex;flex-direction:column;align-items:center;padding:24px 16px 40px;background:radial-gradient(ellipse at 22% -8%,rgba(216,121,84,.1) 0%,transparent 48%),radial-gradient(ellipse at 80% 90%,rgba(159,202,179,.08) 0%,transparent 44%),var(--bg)}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.card2{background:var(--card2);border:1px solid var(--border);border-radius:var(--radius-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;border-radius:var(--radius-sm);border:none;font-family:var(--font);font-size:1rem;font-weight:800;cursor:pointer;transition:transform var(--transition),opacity var(--transition),box-shadow var(--transition);text-decoration:none;white-space:nowrap;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}:focus:not(:focus-visible){outline:none!important}.btn:active{transform:scale(.96)}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}.btn-primary{background:#111;color:#fff;box-shadow:0 4px 20px #00000038}.btn-primary:hover:not(:disabled){box-shadow:0 6px 28px #00000059;transform:translateY(-1px)}.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-ghost:hover{background:var(--card2);color:var(--text)}.btn-lg{padding:18px 32px;font-size:1.1rem;border-radius:16px}.btn-sm{padding:10px 16px;font-size:.875rem}.btn-success{background:var(--green);color:#fff;box-shadow:0 4px 16px #4f9f7240}.btn-danger{background:var(--red);color:#fff}.title{font-size:2rem;font-weight:900;letter-spacing:-.5px}.subtitle{font-size:1rem;color:var(--text-muted);font-weight:600}.label{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim)}.input{width:100%;background:var(--card);border:2px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px;font-family:var(--font);font-size:1rem;font-weight:700;color:var(--text);outline:none;transition:border-color var(--transition)}.input:focus{border-color:var(--purple-light)}.input::placeholder{color:var(--text-dim);font-weight:600}.profile-select{gap:32px;padding-top:48px}.profile-select .logo{font-size:3rem;margin-bottom:4px}.profile-select .app-title{font-size:2.4rem;font-weight:900;color:var(--text)}.profile-select .tagline{color:var(--text-muted);font-size:1rem;font-weight:600;margin-top:4px}.profiles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:16px;width:100%;max-width:640px}.profile-card{display:flex;flex-direction:column;align-items:center;gap:10px;padding:24px 12px;border-radius:var(--radius);cursor:pointer;transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);position:relative;overflow:hidden;border:2px solid var(--border);background:linear-gradient(160deg,var(--card),var(--card2));-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}.profile-card:hover{transform:translateY(-4px);box-shadow:0 12px 40px #0000002e;border-color:var(--purple-light)}.profile-card:active{transform:scale(.97)}.profile-avatar{font-size:3.5rem;line-height:1}.profile-name{font-size:.95rem;font-weight:800;color:var(--text);text-align:center}.profile-year{font-size:.75rem;font-weight:700;color:var(--text-muted)}.profile-streak{font-size:.75rem;font-weight:700;color:var(--amber)}.profile-card.add-card{border-style:dashed;background:transparent;color:var(--text-muted)}.profile-card.add-card .add-icon{font-size:2.5rem}.profile-card.add-card:hover{color:var(--text);border-color:var(--purple)}.delete-btn{position:absolute;top:8px;right:8px;background:#d95c5c2e;border:none;border-radius:50%;width:28px;height:28px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:.75rem;color:var(--red);opacity:.4;transition:opacity var(--transition)}.profile-card:hover .delete-btn{opacity:1}.parent-btn{margin-top:8px;font-size:.8rem;color:var(--text-dim);background:none;border:none;cursor:pointer;font-family:var(--font);font-weight:700}.parent-btn:hover{color:var(--text-muted)}.pin-screen{gap:12px;max-width:360px;width:100%;margin:0 auto}.pin-avatar{font-size:3.5rem;text-align:center}.pin-name{font-size:1.2rem;font-weight:900;text-align:center}.pin-dots{display:flex;gap:16px;justify-content:center}.pin-dot{width:18px;height:18px;border-radius:50%;border:2px solid var(--purple-light);transition:background var(--transition)}.pin-dot.filled{background:var(--purple-light)}.pin-pad{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;max-width:260px;margin:0 auto;width:100%}.pin-key{aspect-ratio:1;background:var(--card);border:1px solid var(--border);border-radius:14px;font-size:1.4rem;font-weight:900;color:var(--text);cursor:pointer;transition:transform var(--transition),background var(--transition);font-family:var(--font);display:flex;align-items:center;justify-content:center;-webkit-tap-highlight-color:transparent}.pin-key:hover{background:var(--card2)}.pin-key:active{transform:scale(.92)}.pin-key.empty{visibility:hidden}.pin-error{color:var(--red);font-weight:800;text-align:center;font-size:.9rem;min-height:1.2em}.onboarding{max-width:520px;width:100%;margin:0 auto;gap:12px;padding-top:16px;padding-bottom:16px;height:100dvh;min-height:unset;overflow:hidden}.onboarding-progress{display:flex;gap:6px;justify-content:center}.ob-dot{height:6px;border-radius:3px;background:var(--border);transition:background var(--transition),width var(--transition);width:20px}.ob-dot.active{background:var(--purple-light);width:32px}.ob-dot.done{background:var(--green)}.ob-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;width:100%}.ob-title{font-size:1.3rem;font-weight:900;margin-bottom:4px}.ob-sub{color:var(--text-muted);font-weight:600;font-size:.9rem;margin-bottom:16px}.avatar-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:8px}.avatar-btn{aspect-ratio:1;border-radius:12px;border:2px solid transparent;background:var(--card2);font-size:1.8rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform var(--transition),border-color var(--transition);-webkit-tap-highlight-color:transparent}.avatar-btn:hover{transform:scale(1.1)}.avatar-btn.selected{border-color:var(--purple-light);background:#d8795426;transform:scale(1.05)}.year-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.year-btn{padding:20px;border-radius:16px;background:var(--card2);border:2px solid transparent;color:var(--text);font-family:var(--font);font-size:1.1rem;font-weight:800;cursor:pointer;transition:all var(--transition);text-align:center;-webkit-tap-highlight-color:transparent}.year-btn:hover{border-color:var(--border);background:var(--card)}.year-btn.selected{border-color:var(--purple-light);background:#d8795426}.year-btn .year-note{display:block;font-size:.75rem;color:var(--text-muted);margin-top:4px;font-weight:600}.chip-grid{display:flex;flex-wrap:wrap;gap:8px}.chip{padding:10px 16px;border-radius:40px;border:2px solid var(--border);background:var(--card2);color:var(--text-muted);font-family:var(--font);font-size:.9rem;font-weight:700;cursor:pointer;transition:all var(--transition);-webkit-tap-highlight-color:transparent}.chip:hover{border-color:var(--purple-light);color:var(--text);background:#d879541f}.chip.selected{border-color:var(--purple-light);background:#d8795433;color:var(--text);box-shadow:0 0 12px #d8795440}.friend-list{display:flex;flex-direction:column;gap:10px}.friend-row{display:flex;gap:8px;align-items:center}.friend-input{flex:1}.remove-btn{background:none;border:none;color:var(--red);cursor:pointer;font-size:1.2rem;padding:4px 8px;border-radius:8px}.remove-btn:hover{background:#d95c5c1a}.add-friend-btn{background:none;border:1.5px dashed var(--border);border-radius:var(--radius-sm);padding:12px;color:var(--text-muted);font-family:var(--font);font-weight:700;cursor:pointer;width:100%;font-size:.9rem}.add-friend-btn:hover{border-color:var(--orange);color:var(--text)}.pet-toggle{display:flex;gap:12px}.pet-opt{flex:1;padding:16px;border-radius:16px;border:2px solid var(--border);background:var(--card2);color:var(--text-muted);font-family:var(--font);font-weight:800;font-size:1rem;cursor:pointer;text-align:center;transition:all var(--transition)}.pet-opt.selected{border-color:var(--purple-light);background:#d8795426;color:var(--text)}.diagnostic-q{text-align:center;padding:24px}.diagnostic-progress{height:6px;background:var(--border);border-radius:3px;overflow:hidden;margin-bottom:24px}.diagnostic-progress-bar{height:100%;background:var(--progress-fill);border-radius:3px;transition:width .4s ease}.diagnostic-question-num{color:var(--text-dim);font-size:.8rem;font-weight:700;margin-bottom:8px}.diagnostic-topic-tag{display:inline-block;padding:4px 12px;border-radius:20px;background:#d8795426;color:var(--orange);font-size:.75rem;font-weight:700;margin-bottom:20px}.diagnostic-eq{font-size:2.2rem;font-weight:900;margin:16px 0;font-variant-numeric:tabular-nums}.diagnostic-mc{display:flex;flex-direction:column;gap:10px;margin-top:16px}.diagnostic-mc-btn{padding:16px;border-radius:14px;border:2px solid var(--border);background:var(--card2);color:var(--text);font-family:var(--font);font-size:1.1rem;font-weight:800;cursor:pointer;transition:all var(--transition)}.diagnostic-mc-btn:hover{border-color:var(--purple-light);background:#d879541f}.diagnostic-mc-btn.correct{border-color:var(--green);background:#4f9f7233;color:var(--green)}.diagnostic-mc-btn.incorrect{border-color:var(--red);background:#d95c5c26;color:var(--red)}.diagnostic-input-row{display:flex;gap:10px;margin-top:16px}.diagnostic-input{font-size:1.4rem;text-align:center;letter-spacing:4px}.dashboard{max-width:640px;width:100%;margin:0 auto;gap:24px}.dash-header{display:flex;align-items:center;justify-content:space-between;width:100%;padding:4px 0}.dash-greeting{font-size:1.3rem;font-weight:900}.dash-greeting .emoji{margin-right:6px}.dash-avatar-btn{font-size:2rem;background:var(--card);border:1px solid var(--border);border-radius:50%;width:52px;height:52px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:transform var(--transition);flex-shrink:0}.dash-avatar-btn:hover{transform:scale(1.08)}.streak-bar{display:flex;align-items:center;gap:16px;width:100%;background:var(--surface);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:16px 20px}.streak-item{display:flex;align-items:center;gap:8px}.streak-icon{font-size:1.3rem}.streak-val{font-size:1.2rem;font-weight:900}.streak-lbl{font-size:.75rem;color:var(--text-muted);font-weight:700}.shield-badge{margin-left:6px;font-size:.8rem;font-weight:800;color:var(--blue);vertical-align:middle}.streak-div{width:1px;height:32px;background:var(--border)}.topics-title{font-size:1rem;font-weight:900;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;width:100%;padding-left:4px}.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;width:100%}@media (min-width: 480px){.topic-grid{grid-template-columns:repeat(3,1fr)}}.topic-card{border-radius:var(--radius);padding:20px 16px;cursor:pointer;transition:transform var(--transition),box-shadow var(--transition);display:flex;flex-direction:column;gap:8px;position:relative;overflow:hidden;-webkit-tap-highlight-color:transparent;border:1.5px solid var(--border);background:var(--surface-peach-soft)}.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#1113}.topic-card:active{transform:scale(.97)}.topic-card .tc-icon-wrap{margin-bottom:2px}.topic-card .tc-name{font-size:.9rem;font-weight:800;color:var(--ink)}.topic-card .tc-level{font-size:.7rem;font-weight:700;color:var(--muted);font-family:var(--font-mono)}.topic-card .tc-bar{height:4px;border-radius:2px;background:var(--progress-bg);margin-top:4px;overflow:hidden}.topic-card .tc-bar-fill{height:100%;border-radius:2px;background:var(--progress-fill);transition:width .6s ease}.topic-card .tc-new-badge{position:absolute;top:8px;right:8px;background:var(--surface-peach);border:1px solid var(--border);border-radius:8px;padding:2px 8px;font-size:.62rem;font-weight:800;color:var(--ink)}.topic-card .tc-challenge-badge{position:absolute;top:8px;right:8px;background:var(--ink);border-radius:8px;padding:2px 8px;font-size:.62rem;font-weight:800;color:#fff}.topic-card.mastered{border-color:var(--accent-yellow);background:var(--tint-yellow);box-shadow:0 0 0 1.5px var(--accent-yellow)}.topic-card.mastered .tc-level{color:var(--amber)}.topic-card .tc-mastered-badge{position:absolute;top:8px;right:8px;background:var(--ink);border-radius:8px;padding:2px 8px;font-size:.62rem;font-weight:800;color:#fff}.recent-title{font-size:1rem;font-weight:900;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;width:100%;padding-left:4px}.recent-grid{display:flex;flex-direction:column;gap:10px;width:100%}.recent-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px 16px;display:flex;align-items:center;gap:14px}.recent-emoji{font-size:1.5rem}.recent-info{flex:1}.recent-topic{font-weight:800;font-size:.9rem}.recent-score{font-size:.8rem;color:var(--text-muted);font-weight:600}.recent-stars{display:flex;gap:2px;font-size:.9rem}.signout-btn{background:none;border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 20px;color:var(--text-muted);font-family:var(--font);font-weight:700;font-size:.85rem;cursor:pointer;transition:all var(--transition);margin-top:8px}.signout-btn:hover{border-color:var(--red);color:var(--red)}.practice-screen{height:100dvh;display:flex;flex-direction:column;background:radial-gradient(ellipse at 20% 0%,rgba(216,121,84,.12) 0%,transparent 45%),radial-gradient(ellipse at 80% 90%,rgba(255,231,214,.4) 0%,transparent 45%),var(--bg);position:relative;overflow:hidden;transition:background .3s ease}.practice-top-bar{height:5px;background:var(--border);flex-shrink:0}.practice-progress-fill{height:100%;background:var(--progress-fill);transition:width .4s ease}.practice-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;flex-shrink:0}.practice-back{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:10px 16px;color:var(--text-muted);font-family:var(--font);font-weight:700;font-size:.85rem;cursor:pointer;transition:all var(--transition);display:flex;align-items:center;gap:6px}.practice-back:hover{color:var(--text);border-color:var(--purple-light)}.practice-counter{font-size:.9rem;font-weight:800;color:var(--text-muted)}.practice-streak{display:flex;align-items:center;gap:6px;background:#d88a2426;border:1px solid rgba(216,138,36,.3);border-radius:20px;padding:6px 14px;font-size:.9rem;font-weight:800;color:var(--amber)}.practice-body{flex:1;display:flex;flex-direction:column;align-items:center;padding:10px 16px 14px;gap:12px;overflow:hidden;min-height:0}.practice-question-area{flex:1;min-height:0;width:100%;display:flex;flex-direction:column;align-items:center;gap:16px;overflow-y:auto;-webkit-overflow-scrolling:touch;padding-bottom:4px}.practice-question-area>*{flex-shrink:0}.practice-input-area{flex-shrink:0;width:100%;max-width:480px;display:flex;flex-direction:column;align-items:center}.question-card{background:linear-gradient(160deg,var(--card),var(--card2));border:1px solid var(--border);border-radius:24px;padding:20px 28px;width:100%;max-width:480px;text-align:center;transition:all .3s ease;position:relative;overflow:hidden}.question-card.correct{border-color:var(--green);box-shadow:0 0 50px #4f9f724d}.question-card.incorrect{border-color:var(--red);box-shadow:0 0 50px #d95c5c4d}.q-topic-tag{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:20px;font-size:.75rem;font-weight:800;margin-bottom:16px;background:#0000000d;color:var(--text-muted)}.q-prompt{font-size:1.1rem;font-weight:700;color:var(--text-muted);line-height:1.5;margin-bottom:16px}.q-visual{display:flex;justify-content:center;margin:4px 0 12px}.q-visual svg{max-width:100%;height:auto}.q-visual table{border-collapse:collapse;font-family:var(--font);font-size:.9rem;font-weight:700;color:var(--text)}.q-visual table th,.q-visual table td{border:1.5px solid var(--border);padding:8px 14px;text-align:center}.q-visual table th{background:var(--card2);font-weight:900}.q-equation{font-size:2.4rem;font-weight:900;font-variant-numeric:tabular-nums;line-height:1.2;color:var(--text)}@media (min-width: 400px){.q-equation{font-size:2.8rem}}.q-fraction{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle;margin:0 4px}.q-fraction .q-num{border-bottom:3px solid currentColor;padding-bottom:2px;line-height:1;font-size:.75em}.q-fraction .q-den{padding-top:2px;line-height:1;font-size:.75em}.feedback-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:8px;border-radius:24px;pointer-events:none;opacity:0;transition:opacity .2s ease}.feedback-overlay.show{opacity:1}.feedback-overlay.correct{background:#4f9f72e0}.feedback-overlay.incorrect{background:#d95c5ceb}.feedback-icon{font-size:3.5rem}.feedback-text{font-size:1.4rem;font-weight:900;color:#fff}.feedback-correct-ans{font-size:1rem;font-weight:700;color:#ffffffd9}.celebrate-popup{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#4f9f721f;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);pointer-events:none}.celebrate-img{width:min(320px,80vw);height:min(320px,80vw);object-fit:cover;border-radius:32px;border:6px solid var(--green);box-shadow:0 0 60px #4f9f7280,0 20px 60px #0003}.celebrate-msg{margin-top:20px;font-size:2rem;font-weight:900;color:var(--green-dark);text-shadow:0 2px 8px rgba(79,159,114,.3);text-align:center}@keyframes bounce-in-big{0%{transform:scale(.4) rotate(-6deg);opacity:0}60%{transform:scale(1.08) rotate(2deg);opacity:1}80%{transform:scale(.96) rotate(-1deg)}to{transform:scale(1) rotate(0);opacity:1}}.celebrate-popup{animation:bounce-in-big .45s cubic-bezier(.34,1.56,.64,1) forwards}.mc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;width:100%;max-width:480px}.mc-btn{padding:18px 12px;border-radius:16px;border:2px solid var(--border);background:var(--card);color:var(--text);font-family:var(--font);font-size:1.1rem;font-weight:800;cursor:pointer;transition:all var(--transition);-webkit-tap-highlight-color:transparent}.mc-btn:hover:not(:disabled){border-color:var(--purple-light);background:#d879541f}.mc-btn:active:not(:disabled){transform:scale(.96)}.mc-btn.selected-correct{border-color:var(--green);background:#4f9f7233;color:var(--green)}.mc-btn.selected-incorrect{border-color:var(--red);background:#d95c5c26;color:var(--red)}.mc-btn.reveal-correct{border-color:var(--green);background:#4f9f721a}.mc-btn:disabled{cursor:default}.numpad-area{display:flex;flex-direction:column;align-items:center;gap:12px;width:100%;max-width:320px}.answer-display{width:100%;background:linear-gradient(160deg,var(--card),var(--card2));border:2px solid var(--border);border-radius:16px;padding:12px 24px;text-align:center;font-size:2.2rem;font-weight:900;font-variant-numeric:tabular-nums;min-height:58px;color:var(--text);transition:border-color var(--transition),box-shadow var(--transition)}.answer-display.has-value{border-color:var(--purple-light);box-shadow:0 0 16px #d879542e}.answer-display .placeholder{color:var(--text-dim);font-size:1rem;font-weight:700;padding-top:8px;display:block}.numpad{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;width:100%}.nk{aspect-ratio:1.6;background:linear-gradient(160deg,var(--card),var(--card2));border:1px solid var(--border);border-radius:14px;font-size:1.5rem;font-weight:900;color:var(--text);cursor:pointer;transition:all var(--transition);font-family:var(--font);display:flex;align-items:center;justify-content:center;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}.nk:hover{background:#d879542e;border-color:var(--purple-light);transform:translateY(-1px)}.nk:active{transform:scale(.92)}.nk.nk-delete{color:var(--text-muted);font-size:1.2rem}.nk.nk-submit{background:var(--ink);border-color:transparent;color:#fff;font-size:1.2rem}.nk.nk-submit:hover{box-shadow:0 4px 16px 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8px}.mg-country-flag-sm{font-size:3.5rem;line-height:1;filter:drop-shadow(0 2px 8px rgba(0,0,0,.12))}.mg-country-name{font-size:1.4rem;font-weight:900;text-align:center}.mg-tt-question{display:flex;align-items:center;justify-content:center;gap:12px;padding:24px 0 8px}.mg-tt-a,.mg-tt-b{font-size:2.8rem;font-weight:900}.mg-tt-op{font-size:2rem;font-weight:700;color:var(--text-muted)}.mg-tt-blank{font-size:2.8rem;font-weight:900;color:var(--purple);background:var(--card2);border-radius:12px;padding:0 16px}.mg-options-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;width:100%}.mg-option{padding:16px 10px;border-radius:14px;border:2px solid var(--border);background:var(--card);color:var(--text);font-weight:800;font-size:.92rem;font-family:var(--font);cursor:pointer;transition:all .15s;text-align:center;line-height:1.3}.mg-option:hover:not(:disabled){border-color:var(--purple);background:var(--card2);transform:translateY(-1px)}.mg-option:disabled{cursor:default}.mg-option.mg-option-correct{background:#4f9f7226;border-color:#4f9f7299;color:var(--green)}.mg-option.mg-option-wrong{background:#d95c5c1a;border-color:#d95c5c73;color:var(--red)}.mg-option.mg-option-number{font-size:1.3rem}.tt-selector-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;width:100%}.tt-selector-btn{padding:18px 0;border-radius:14px;border:2px solid var(--border);background:var(--card);color:var(--text);font-weight:900;font-size:1.1rem;font-family:var(--font);cursor:pointer;transition:all .15s}.tt-selector-btn:hover{background:var(--purple);color:#fff;border-color:var(--purple);transform:translateY(-2px)}.tt-selector-mixed{grid-column:span 4;background:linear-gradient(135deg,var(--purple),var(--orange));color:#fff;border-color:transparent;font-size:1rem}.tt-selector-mixed:hover{filter:brightness(1.15);background:linear-gradient(135deg,var(--purple),var(--orange));color:#fff}.topic-card.challenge-ready{box-shadow:0 0 0 2px #fde100,0 8px 32px #fde10059;animation:challenge-pulse 2s ease-in-out infinite}@keyframes challenge-pulse{0%,to{box-shadow:0 0 0 2px #fde100,0 8px 32px #fde10059}50%{box-shadow:0 0 0 3px #fde100,0 8px 40px #fde1008c}}.topic-card .tc-challenge-badge{position:absolute;top:8px;right:8px;background:#fde100;color:#1a1a00;border-radius:8px;padding:2px 8px;font-size:.65rem;font-weight:900}.threshold-segment-badge{background:#ffffff26;border-radius:20px;padding:4px 12px;font-size:.78rem;font-weight:900;color:#fff}.threshold-score-tracker{display:flex;align-items:center;justify-content:space-between;width:100%;padding:6px 16px;background:#ffffff12;border-bottom:1px solid rgba(255,255,255,.08);font-size:.85rem}.threshold-progress{background:linear-gradient(90deg,#fde100,#f59e0b)!important}.threshold-unlock-banner{display:flex;align-items:center;gap:12px;background:linear-gradient(135deg,#fde10026,#f59e0b1a);border:1px solid rgba(253,225,0,.4);border-radius:16px;padding:16px 20px;width:100%}.threshold-result-banner{display:flex;flex-direction:column;align-items:center;gap:8px;border-radius:24px;padding:28px 24px;width:100%;text-align:center}.threshold-result-banner.threshold-pass{background:linear-gradient(135deg,#4f9f7233,#4f9f7214);border:2px solid rgba(79,159,114,.4)}.threshold-result-banner.threshold-fail{background:linear-gradient(135deg,#d8795426,#11111114);border:2px solid rgba(216,121,84,.25)}.threshold-result-icon{font-size:3.5rem}.threshold-result-title{font-size:1.5rem;font-weight:900}.threshold-result-sub{font-size:1rem;font-weight:800;color:var(--text-muted)}.slow-prompt{width:100%;max-width:480px;background:#d89a2414;border:1px solid rgba(216,154,36,.28);border-radius:14px;padding:12px 16px;display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}.splash-screen{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#1c1208;animation:splash-bg-in .35s ease both}.splash-out{animation:splash-fade-out .55s ease forwards!important}.splash-glow{position:absolute;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(216,121,84,.2) 0%,transparent 70%);pointer-events:none}.splash-icon{position:relative;z-index:1;animation:splash-icon-pop .65s cubic-bezier(.34,1.56,.64,1) .25s both}.splash-wordmark{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:4px;margin-top:22px;animation:splash-word-in .5s ease .8s both}.splash-title{font-family:var(--font-display);font-weight:900;font-size:2.2rem;color:#f5ece6;letter-spacing:-.01em;line-height:1}.splash-sub{font-family:var(--font-display);font-weight:400;font-size:.9rem;color:#d87954;letter-spacing:.28em;text-transform:lowercase}@keyframes splash-bg-in{0%{opacity:0}to{opacity:1}}@keyframes splash-icon-pop{0%{opacity:0;transform:scale(.65)}to{opacity:1;transform:scale(1)}}@keyframes splash-word-in{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@keyframes splash-fade-out{0%{opacity:1}to{opacity:0}}.profile-select{animation:fade-in .45s ease .05s both}.ps-brand{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}.ps-profiles{display:flex;flex-direction:column;align-items:center;width:100%;gap:16px}.ps-parent-desktop{display:none}@media (min-width: 800px){.screen.profile-select{flex-direction:row;align-items:stretch;padding:0;gap:0;background:var(--bg)}.ps-brand{width:38%;min-height:100dvh;background:#1c1208;justify-content:center;padding:64px 56px;position:relative;gap:16px;--logo-title-color: #f5ece6;--logo-sub-color: #d87954}.ps-brand .tagline{color:#f5ece67a;max-width:260px}.ps-parent-desktop{display:block;position:absolute;bottom:32px;margin-top:0;color:#f5ece64d!important}.ps-parent-desktop:hover{color:#f5ece699!important}.ps-profiles{flex:1;background:radial-gradient(ellipse at 20% -8%,rgba(216,121,84,.1) 0%,transparent 48%),radial-gradient(ellipse at 85% 95%,rgba(159,202,179,.08) 0%,transparent 44%),var(--bg);padding:64px 56px;justify-content:center;min-height:100dvh}.ps-parent-mobile{display:none}}.digest-toggle{flex-shrink:0;width:48px;height:28px;border-radius:14px;border:none;cursor:pointer;position:relative;transition:background .2s ease;padding:0}.digest-toggle--on{background:var(--green, #34D399)}.digest-toggle--off{background:#ffffff26}.digest-toggle:disabled{opacity:.55;cursor:default}.digest-toggle__knob{display:block;width:22px;height:22px;border-radius:50%;background:#fff;position:absolute;top:3px;transition:left .2s ease;box-shadow:0 1px 4px #0003}.digest-toggle--on .digest-toggle__knob{left:23px}.digest-toggle--off .digest-toggle__knob{left:3px}