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ease}.mode-chip:active{transform:scale(.97)}.mode-chip-on{color:var(--text);border-color:color-mix(in srgb,var(--mode-accent) 65%,transparent);background:color-mix(in srgb,var(--mode-accent) 12%,var(--surface-2));box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--mode-accent) 35%,transparent)}.mode-check{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:6px;border:1.5px solid var(--border-strong);background:transparent;color:#08101f;flex-shrink:0}.mode-chip-on .mode-check{background:var(--mode-accent);border-color:var(--mode-accent)}.modes-note{margin-top:12px;text-align:center;font-size:.88rem;color:var(--text-dim)}.modes-note-warn{color:var(--danger);font-weight:600}.home-actions{display:flex;flex-direction:column;gap:10px}.btn-play{position:relative;flex-direction:row;flex-wrap:wrap;font-size:1.35rem;padding:16px 20px;border-radius:18px;letter-spacing:.02em}.btn-play:not(:disabled){box-shadow:0 10px 30px -8px var(--primary-glow),0 0 0 1px #22c55e40,inset 0 1px #ffffff47}.btn-play-sub{flex-basis:100%;font-size:.76rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;opacity:.85;margin-top:-2px}.home-actions-row,.go-actions-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}.home-actions-row .btn{font-size:.88rem;padding:12px 10px}.home-footer{text-align:center;color:var(--text-faint);font-size:.8rem}.game-screen{position:fixed;top:var(--vvt, 0px);left:0;right:0;height:var(--vvh, 100dvh);width:min(100%,560px);margin-inline:auto;padding:calc(8px + env(safe-area-inset-top)) 12px calc(10px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:10px;overflow:hidden;z-index:1}.game-header{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-shrink:0}.game-stat{display:flex;flex-direction:column;align-items:center;line-height:1;min-width:60px}.stat-value{font-family:var(--font-mono);font-size:2.3rem;font-weight:800;color:var(--brand-bright);text-shadow:0 2px 14px 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.game-card{flex:1;margin-block:0;padding:8px;gap:6px}.game-screen.compact .game-image{flex:1 1 auto;aspect-ratio:auto;min-height:56px;max-height:none;background:transparent}.game-screen.compact .game-image img{object-fit:contain;object-position:center}.game-screen.compact .game-prompt{font-size:clamp(1.38rem,5.9vw,1.7rem);line-height:1.24}.game-screen.compact .answer-form{gap:7px}.game-screen.compact .answer-control .answer-input{font-size:1.4rem;padding:9px 10px}.game-screen.compact .answer-affix{font-size:1.34rem}.game-screen.compact .answer-submit{width:54px;min-height:46px}.go-header{text-align:center;display:flex;flex-direction:column;align-items:center;gap:4px}.go-eyebrow{font-size:.8rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--text-dim)}.go-score{font-family:var(--font-mono);font-size:4.4rem;font-weight:800;line-height:1;background:linear-gradient(180deg,#fde68a,var(--brand-bright) 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var(--border);padding-top:10px;margin-top:4px;color:var(--text-dim);font-size:.92rem}.go-combo-row strong{font-family:var(--font-mono);font-size:1.15rem;color:var(--accent-change)}.go-save-row{display:flex;gap:10px;margin-bottom:12px}.initials-input{width:110px;background:#080d1acc;border:1.5px solid var(--border-strong);border-radius:12px;padding:9px 12px;font-family:var(--font-mono);font-size:1.2rem;font-weight:800;letter-spacing:.3em;text-align:center;text-transform:uppercase}.initials-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px #f59e0b2e}.btn-save{flex:1}.go-saved-note{color:var(--primary);font-weight:600;font-size:.9rem;margin-bottom:12px}.go-actions{display:flex;flex-direction:column;gap:10px}.go-actions .btn-block{font-size:1.15rem;padding:14px}.go-actions-row .btn{font-size:.86rem;padding:11px 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.lm-steps{margin-top:14px;gap:16px}.review-method .lm-step{gap:13px}.review-method .lm-step-body{gap:4px}.review-method .lm-step-label{font-size:1.1rem;line-height:1.4}.review-method .lm-step-expr{font-size:1.2rem;line-height:1.5}.result-chip{display:inline-block;font-weight:800;color:var(--primary);background:#22c55e1f;border:1px solid rgba(34,197,94,.35);border-radius:7px;padding:2px 9px}.review-empty{text-align:center;color:var(--text-dim);padding:30px 0}@media (max-width: 380px){.review-card{padding:16px 12px}.review-card-top{gap:11px}.review-method{padding:14px 12px}}@media (min-width: 600px){.review-card{padding:20px;gap:18px}.review-method{padding:16px 18px}}.review-back{margin-top:4px}.learn-sub{text-align:center;color:var(--text-dim);font-size:.9rem}.learn-sub strong{color:var(--text)}.lesson-list{display:flex;flex-direction:column;gap:12px}.lesson-card{display:flex;align-items:center;gap:14px;text-align:left;width:100%;transition:border-color .15s ease,transform .08s 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7px;border-radius:999px}.lesson-blurb{color:var(--text-dim);font-size:.84rem;line-height:1.35}.lesson-stages{display:flex;align-items:center;gap:5px;margin-top:4px}.lesson-stage-dot{width:7px;height:7px;border-radius:50%;background:var(--surface-3);border:1px solid var(--border-strong)}.lesson-stage-dot.on{background:var(--lesson-accent);border-color:var(--lesson-accent)}.lesson-stage-count{font-size:.72rem;color:var(--text-faint);font-family:var(--font-mono);margin-left:3px}.lesson-arrow{color:var(--text-faint);font-size:1.2rem;flex-shrink:0}.learn-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:4px}.lesson-progress{display:flex;gap:6px;flex:1;justify-content:center}.lesson-progress-seg{width:34px;height:7px;border-radius:999px;background:var(--surface-3);transition:background-color .2s ease}.lesson-progress-seg.current{background:var(--brand)}.lesson-progress-seg.done{background:var(--primary)}.lesson-progress-seg.current.done{background:linear-gradient(90deg,var(--primary),var(--brand))}.lesson-head{display:flex;align-items:center;gap:14px}.lesson-emoji-lg{font-size:2rem;width:56px;height:56px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;background:color-mix(in srgb,var(--lesson-accent) 12%,var(--surface-2));border:1px solid color-mix(in srgb,var(--lesson-accent) 30%,transparent);border-radius:16px}.lesson-screen-title{font-size:1.35rem;font-weight:800;color:var(--lesson-accent)}.lesson-formula{color:var(--text-dim);font-size:.86rem}.lesson-stage-card{display:flex;flex-direction:column;gap:12px}.stage-badge{align-self:flex-start;font-size:.74rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;padding:4px 12px;border-radius:999px}.badge-ido{background:#f59e0b1f;color:var(--brand-bright);border:1px solid rgba(245,158,11,.4)}.badge-wedo{background:#38bdf81f;color:var(--accent-decrease);border:1px solid rgba(56,189,248,.4)}.badge-youdo{background:#22c55e1f;color:var(--primary);border:1px solid rgba(34,197,94,.4)}.badge-flash{background:#a78bfa1f;color:var(--accent-of);border:1px solid rgba(167,139,250,.4)}.lesson-tool{color:var(--text-dim);font-size:.88rem}.lesson-tool strong{color:var(--accent-change);text-transform:uppercase;letter-spacing:.04em}.lesson-prompt{font-size:1.05rem;font-weight:600;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px}.lesson-ido-step{padding:4px 2px;animation:step-in .25s ease}@keyframes step-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.lesson-ido-answer{display:flex;flex-direction:column;align-items:center;gap:2px;background:#22c55e14;border:1px solid rgba(34,197,94,.35);border-radius:var(--radius-sm);padding:12px;animation:step-in .25s ease}.lesson-ido-answer span{font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--text-dim)}.lesson-ido-answer strong{font-family:var(--font-mono);font-size:1.7rem;color:var(--primary)}.lesson-answer-row{display:flex;align-items:center;gap:10px}.lesson-input{font-size:1.25rem}.input-shake{animation:shake .3s ease;border-color:var(--danger)!important}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}.lesson-feedback{font-weight:600;font-size:.92rem}.lesson-feedback-wrong{color:var(--danger)}.lesson-feedback-right{color:var(--primary)}.lesson-hints{display:flex;flex-direction:column;gap:8px;padding-left:20px;color:var(--text-dim);font-size:.9rem}.lesson-hints li::marker{color:var(--brand-bright);font-weight:700}.lesson-stage-actions{display:flex;gap:10px;justify-content:flex-end}.flash-options{display:flex;flex-direction:column;gap:9px}.flash-option{text-align:left;padding:12px 14px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--border);font-weight:600;font-size:.92rem;transition:border-color .15s ease,background-color .15s ease}.flash-option:hover:not(:disabled){border-color:var(--border-strong)}.flash-option.flash-right{border-color:#22c55e99;background:#22c55e1a}.flash-option.picked.flash-wrong{border-color:#f8717199;background:#f8717114}