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var(--color-border-soft)}.privacy-dashboard__title{font-family:var(--font-sans);font-size:1.25rem;font-weight:500;color:var(--color-text-primary);margin:0;letter-spacing:-.3px}.privacy-dashboard__close{background:var(--gradient-key-rest);box-shadow:var(--shadow-mini-key);color:var(--color-text-secondary);border:none;border-radius:var(--radius-sm);padding:6px;cursor:pointer;display:flex;transition:box-shadow var(--transition-base),transform var(--transition-base)}.privacy-dashboard__close:active{box-shadow:var(--shadow-key-pressed);transform:translateY(.5px)}.privacy-dashboard__body{padding:16px 20px 20px;overflow-y:auto;font-family:var(--font-sans)}.privacy-section{margin-bottom:20px}.privacy-section:last-of-type{margin-bottom:12px}.privacy-section__title{font-size:.75rem;font-weight:500;letter-spacing:.8px;text-transform:uppercase;color:var(--color-text-tertiary);margin:0 0 8px}.privacy-section__sub{font-size:.85rem;color:var(--color-text-secondary);line-height:1.4;margin:0 0 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a:hover{text-decoration:underline}.conv-chip--pending{background:var(--color-surface-canvas-warm);color:var(--color-text-secondary);font-style:italic}.conv-card__transcription{font-size:.8rem;color:var(--color-text-secondary);font-style:italic;margin-bottom:6px;line-height:1.35}.conv-card__muted{color:var(--color-text-tertiary);font-style:normal;margin-right:4px}.conv-card__expression{font-family:var(--font-mono);font-size:.95rem;color:var(--color-text-strong);margin-bottom:6px;letter-spacing:-.2px}.conv-card__result{font-family:var(--font-mono);font-size:1.7rem;font-weight:500;color:var(--color-text-primary);letter-spacing:-.8px;line-height:1.1;margin-bottom:2px;word-break:break-all}.conv-card__result-secondary{font-family:var(--font-mono);font-size:.85rem;color:var(--color-text-tertiary);margin-bottom:8px}.conv-card__actions{display:flex;gap:6px;margin-top:8px}.conv-action{background:var(--gradient-key-rest);box-shadow:var(--shadow-mini-key);color:var(--color-text-strong);border:none;border-radius:var(--radius-sm);padding:5px 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var(--color-brand-amber-dark)}.conv-card__editor{width:100%;background:var(--color-surface-inset);box-shadow:var(--shadow-inset);border:none;border-radius:var(--radius-md);padding:10px 12px;font-family:var(--font-mono);font-size:1rem;color:var(--color-text-strong);letter-spacing:-.2px;margin-bottom:6px}.conv-card__editor:focus{outline:none;box-shadow:var(--shadow-inset),var(--shadow-focus-ring)}.conv-card__error{font-family:var(--font-sans);font-size:.75rem;color:var(--color-semantic-danger-text);margin-bottom:6px}.conv-composer{flex-shrink:0;display:flex;flex-direction:column;gap:8px;background:var(--gradient-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:var(--spacing-card-padding, 14px)}@media (min-width: 768px){.conv-main{max-width:720px;margin:0 auto;padding:24px 20px;gap:16px;height:auto;max-height:none}.conv-history{max-height:60vh;padding:4px 4px 12px}.conv-card{padding:16px 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0;font-size:.9375rem}.popup-pricing{margin-bottom:24px}.popup-trial{margin-bottom:8px}.popup-trial-badge{display:inline-block;background:var(--gradient-voice-active);box-shadow:var(--shadow-mini-key);color:var(--color-text-primary);font-family:var(--font-sans);font-weight:500;padding:6px 16px;border-radius:var(--radius-full);font-size:.875rem}.popup-trial-text{color:var(--color-text-secondary);font-family:var(--font-sans);font-size:.875rem;margin-top:6px}.popup-price{color:var(--color-text-primary);font-family:var(--font-mono);font-weight:500}.popup-btn{width:100%;padding:14px 24px;border:none;border-radius:var(--radius-md);font-family:var(--font-sans);font-size:1rem;font-weight:500;cursor:pointer;margin-bottom:12px;transition:box-shadow var(--transition-base),transform 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#fdb9134d}.triangle-input-a{bottom:5%;left:50%;transform:translate(-50%)}.triangle-input-b{right:5%;top:50%;transform:translateY(-50%)}.triangle-input-c{left:25%;top:35%;transform:translate(-50%,-50%)}.triangle-keypad-v2{display:flex;flex-direction:column;gap:4px;flex-shrink:0}.triangle-keypad-row{display:flex;gap:4px}.triangle-key-v2{flex:1;background:var(--color-surface-canvas-warm);border:1px solid var(--color-border-soft);border-radius:8px;padding:12px 8px;font-size:1rem;font-weight:500;color:var(--color-text-primary);cursor:pointer;transition:all .1s}.triangle-key-v2:active{transform:scale(.96);background:var(--color-border-soft)}.triangle-key-v2.action{background:#e6ecf2;color:#dc2626}.triangle-key-v2.primary{background:var(--gradient-key-dark);border-color:var(--color-charcoal-bottom);color:var(--color-text-on-charcoal);font-weight:600}.triangle-key-v2.wide{flex:2}.easy-square{flex:1;display:flex;flex-direction:column;background:var(--color-surface-canvas);overflow:hidden}.easy-square-fractions{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;padding:8px 16px;flex-shrink:0}.easy-square-triangle{flex:1;position:relative;display:flex;align-items:center;justify-content:center;padding:20px;min-height:200px;margin:8px 12px;border-radius:12px;background-color:#fafcfe;background-image:linear-gradient(rgba(180,200,220,.25) 1px,transparent 1px),linear-gradient(90deg,rgba(180,200,220,.25) 1px,transparent 1px);background-size:20px 20px;border:1px solid #E2E8F0;box-shadow:inset 0 1px 3px #0000000a}.easy-square-svg{width:100%;max-width:280px;height:auto}.easy-square-input{position:absolute;background:var(--color-surface-card-top);border:1px solid var(--color-border-soft);border-radius:6px;padding:6px 10px;font-size:1.1rem;font-weight:700;color:var(--color-text-primary);cursor:pointer;transition:all .15s;min-width:50px;text-align:center;box-shadow:0 1px 3px #0000001a;font-family:SF Mono,Cascadia Code,Consolas,monospace}.easy-square-input:hover{border-color:#a0aec0}.easy-square-input.active{border-color:var(--color-brand-amber);background:var(--color-semantic-warn-bg);box-shadow:0 0 0 3px #fdb9134d}.easy-square-input.computed{background:#f0fff4;border-color:#9ae6b4;color:#276749}.easy-square-input.computed.active{border-color:var(--color-brand-amber);background:var(--color-semantic-warn-bg);color:var(--color-text-primary)}.easy-square-input{display:inline-flex;align-items:baseline;gap:4px;white-space:nowrap;line-height:1.2;font-size:clamp(.8rem,3.4vw,1.05rem);padding:5px 9px}.easy-square-input__tag{font-family:var(--font-sans);font-size:.62em;font-weight:600;letter-spacing:.06em;color:var(--color-text-tertiary)}.easy-square-input.active .easy-square-input__tag{color:var(--color-brand-amber-dark, var(--color-brand-amber))}.easy-square-input.computed .easy-square-input__tag{color:#276749}.easy-square-input-a{top:80%;left:42.5%;transform:translate(-50%)}.easy-square-input-b{left:81%;top:42%;transform:translateY(-50%)}.easy-square-input-c{right:52%;top:22%;transform:translateY(-50%)}@media (min-width: 1024px){.easy-square-input{font-size:1.05rem;padding:6px 10px}}.tab-shell--big-display .tab-shell__controls .key{min-height:36px;padding:6px 0;font-size:1.2rem}.tab-shell--big-display .tab-shell__controls .frac-btn{min-height:32px;padding:5px 3px;font-size:.85rem}.easy-square-presets{display:flex;justify-content:center;gap:10px;padding:8px 16px;flex-shrink:0}.easy-square-preset{background:var(--color-surface-card-top);border:1px solid var(--color-border-soft);border-radius:20px;padding:10px 18px;font-size:.9rem;font-weight:600;color:var(--color-text-secondary);cursor:pointer;transition:all .15s}.easy-square-preset:hover,.easy-square-preset:active{background:var(--color-brand-amber);border-color:var(--color-brand-amber);color:var(--color-text-primary)}.easy-square-keypad{display:flex;flex-direction:column;gap:6px;padding:6px 16px;padding-bottom:max(6px,env(safe-area-inset-bottom));flex-shrink:0}.easy-square-row{display:flex;gap:6px}.easy-square-key{flex:1;background:var(--color-surface-canvas-warm);border:1px solid var(--color-border-soft);border-radius:10px;padding:12px 8px;font-size:1.3rem;font-weight:500;color:var(--color-text-primary);cursor:pointer;transition:all .15s;display:flex;align-items:center;justify-content:center}.easy-square-key:active{transform:scale(.96)}.easy-square-key.action{background:#ffe5e5;border-color:#fcc;color:#c33;font-weight:600}.easy-square-key.primary{background:var(--gradient-key-dark);border-color:var(--color-charcoal-bottom);color:var(--color-text-on-charcoal);font-weight:700}.easy-square-key.primary:active{background:#0a2a28}.header-icon-btn{background:transparent;border:none;padding:0;width:44px;height:44px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--color-text-primary);border-radius:var(--radius-full);-webkit-tap-highlight-color:transparent;transition:color var(--transition-fast),opacity var(--transition-fast)}.header-icon-btn:hover{color:var(--color-brand-amber-dark, var(--color-brand-amber))}.header-icon-btn:active{opacity:.6}.voice-btn.failed{background:var(--gradient-key-rest);box-shadow:var(--shadow-key);color:var(--color-semantic-danger-text, #B91C1C)}.menu-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:998;animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.menu-drawer{position:fixed;top:0;right:-300px;width:300px;max-width:85vw;height:100%;background:var(--color-surface-card-top);z-index:999;display:flex;flex-direction:column;box-shadow:-4px 0 20px #00000026;transition:right .3s ease-out}.menu-drawer.open{right:0}.menu-header{display:flex;align-items:center;justify-content:space-between;padding:16px;padding-top:max(16px,env(safe-area-inset-top));background:var(--gradient-key-dark);flex-shrink:0}.menu-logo{height:36px;width:auto}.menu-close-btn{background:transparent;border:none;padding:8px;cursor:pointer;color:var(--color-text-on-charcoal);border-radius:8px;display:flex;align-items:center;justify-content:center}.menu-close-btn:hover{background:#ffffff1a}.menu-user{display:flex;align-items:center;gap:12px;padding:16px;background:var(--color-surface-canvas);border-bottom:1px solid var(--color-border-soft)}.menu-user-avatar{width:40px;height:40px;background:var(--gradient-key-dark);color:var(--color-text-on-charcoal);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1.1rem}.menu-user-name{font-size:.95rem;color:var(--color-text-primary);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.menu-nav{flex:1;overflow-y:auto;padding:8px 0}.menu-item{display:flex;align-items:center;gap:14px;width:100%;padding:14px 20px;background:transparent;border:none;cursor:pointer;text-align:left;color:var(--color-text-primary);font-size:.95rem;transition:background .15s}.menu-item:hover{background:var(--color-surface-canvas)}.menu-item:active{background:var(--color-surface-canvas-warm)}.menu-item svg{color:#5b6b7d;flex-shrink:0}.menu-item-primary{background:var(--gradient-key-dark);color:var(--color-surface-card-top);border-radius:8px;margin:0 12px;width:calc(100% - 24px)}.menu-item-primary:hover{background:#0a2927}.menu-item-primary svg{color:var(--color-surface-card-top)}.menu-item-signout{color:var(--color-semantic-danger-text)}.menu-item-signout:hover{background:#ffebe9}.menu-item-signout svg{color:var(--color-semantic-danger-text)}.menu-item-danger{color:var(--color-semantic-danger-text)}.menu-item-danger:hover{background:#fff5f5}.menu-item-danger svg{color:var(--color-semantic-danger-text)}.menu-divider{height:1px;background:var(--color-border-soft);margin:8px 16px}.menu-footer{padding:16px;border-top:1px solid var(--color-border-soft);text-align:center;flex-shrink:0}.menu-version{display:block;font-size:.8rem;color:#5b6b7d;margin-bottom:4px}.menu-copyright{display:block;font-size:.75rem;color:#8a9aad}.legal-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1100;padding:16px}.legal-modal{background:var(--color-surface-card-top);border-radius:12px;width:100%;max-width:600px;max-height:85vh;display:flex;flex-direction:column;box-shadow:0 8px 32px #0000004d}.legal-modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--color-border-soft);flex-shrink:0}.legal-modal-title{font-size:1.25rem;font-weight:600;color:var(--color-text-primary);margin:0}.legal-modal-close{width:36px;height:36px;border:none;background:#f0f2f5;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--color-text-secondary);transition:background .2s}.legal-modal-close:hover{background:var(--color-border-soft)}.legal-modal-content{flex:1;overflow-y:auto;padding:20px}.legal-modal-text{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:.9rem;line-height:1.6;color:var(--color-text-primary);white-space:pre-wrap;word-wrap:break-word;margin:0}.legal-modal-text h1,.legal-modal-text h2,.legal-modal-text h3{margin-top:1.5em;margin-bottom:.5em}.legal-modal-footer{padding:16px 20px;border-top:1px solid var(--color-border-soft);flex-shrink:0}.legal-modal-btn{width:100%;padding:12px 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20px}.legal-choice-buttons{display:flex;flex-direction:column;gap:12px;margin-bottom:16px}.legal-choice-btn{display:flex;align-items:center;justify-content:center;gap:10px;padding:14px 20px;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;border:2px solid transparent}.legal-choice-btn-app{background:var(--gradient-key-dark);color:var(--color-surface-card-top);border-color:var(--color-charcoal-bottom)}.legal-choice-btn-app:hover{background:#0a2927}.legal-choice-btn-web{background:var(--color-surface-card-top);color:var(--color-charcoal-bottom);border-color:var(--color-border-soft)}.legal-choice-btn-web:hover{background:var(--color-surface-canvas);border-color:var(--color-charcoal-bottom)}.legal-choice-cancel{background:transparent;border:none;color:var(--color-text-secondary);font-size:.9rem;cursor:pointer;padding:8px 16px}.legal-choice-cancel:hover{color:var(--color-text-primary)}.delete-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1200;padding:20px}.delete-modal{background:var(--color-surface-card-top);border-radius:12px;width:100%;max-width:400px;padding:24px;box-shadow:0 8px 32px #0000004d;text-align:center}.delete-modal-icon{margin-bottom:16px}.delete-modal-title{font-size:1.25rem;font-weight:700;color:var(--color-text-primary);margin:0 0 12px}.delete-modal-text{font-size:.9rem;color:var(--color-text-secondary);margin:0 0 12px;line-height:1.4}.delete-modal-list{text-align:left;margin:0 0 12px;padding-left:24px;font-size:.85rem;color:var(--color-text-secondary)}.delete-modal-list li{margin-bottom:4px}.delete-modal-warning{font-size:.85rem;font-weight:600;color:var(--color-semantic-danger-text);margin:0 0 16px}.delete-modal-error{background:#ffebe9;color:var(--color-semantic-danger-text);padding:10px 12px;border-radius:6px;font-size:.85rem;margin-bottom:16px}.delete-modal-actions{display:flex;gap:12px}.delete-modal-btn{flex:1;padding:12px 16px;font-size:.95rem;font-weight:600;border-radius:8px;border:none;cursor:pointer;transition:background .2s,opacity .2s}.delete-modal-btn:disabled{opacity:.6;cursor:not-allowed}.delete-modal-btn-cancel{background:var(--color-border-soft);color:var(--color-text-primary)}.delete-modal-btn-cancel:hover:not(:disabled){background:#d8dadf}.delete-modal-btn-delete{background:var(--color-semantic-danger-text);color:var(--color-surface-card-top)}.delete-modal-btn-delete:hover:not(:disabled){background:#c82333}.toast{position:fixed;bottom:80px;left:50%;transform:translate(-50%);padding:12px 20px;border-radius:10px;font-size:.9rem;font-weight:500;color:var(--color-text-on-charcoal);z-index:2000;cursor:pointer;box-shadow:0 4px 16px #0003;animation:toast-in .25s ease-out;max-width:calc(100vw - 32px);text-align:center}.toast-error{background:var(--color-semantic-danger-text)}.toast-info{background:var(--gradient-key-dark)}.toast-success{background:#16a34a}.toast-message{line-height:1.4}@keyframes toast-in{0%{opacity:0;transform:translate(-50%) translateY(12px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.conv-sidebar,.conv-focal-wrapper{display:none}.conv-composer-input{display:none;flex-shrink:0;background:var(--gradient-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:var(--spacing-card-padding, 14px);margin-bottom:8px}.conv-composer-input .expression-wrapper{margin-bottom:0}.conv-composer-input__dot{width:8px;height:8px;border-radius:var(--radius-full);background:var(--color-brand-amber);flex-shrink:0;margin-right:10px}.conv-composer-input__hint{display:inline-flex;align-items:center;padding:2px 8px;margin-left:auto;border-radius:var(--radius-sm);background:var(--color-surface-canvas-warm);color:var(--color-text-tertiary);font-family:var(--font-mono);font-size:.7rem;letter-spacing:.3px;flex-shrink:0}.conv-composer-input .expression-input{gap:0}.conv-composer-input .expression-text{flex:1;min-width:0}.conv-focus{flex:1;min-height:0;display:flex;flex-direction:column;gap:6px;overflow:hidden}.conv-controls{flex:1 1 auto;min-height:0;background:var(--gradient-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:10px;display:flex;flex-direction:column;gap:6px;overflow:hidden}.conv-controls .fraction-container,.conv-controls .voice-btn{flex-shrink:0}.conv-controls .keypad{flex:1 1 auto;min-height:0}@media (min-width: 1024px){.conv-main{display:grid;grid-template-columns:280px minmax(0,1fr) 340px;grid-template-rows:1fr;gap:16px;padding:20px 24px;max-width:1280px;margin:0 auto;height:auto;max-height:none;overflow:visible}.conv-sidebar{display:flex;flex-direction:column;gap:10px;padding:16px;background:var(--gradient-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);min-height:0}.conv-sidebar__header{display:flex;align-items:center;justify-content:space-between;gap:8px}.conv-sidebar__title{font-family:var(--font-sans);font-size:.7rem;font-weight:500;letter-spacing:.9px;text-transform:uppercase;color:var(--color-text-tertiary);margin:0}.conv-sidebar__tools{display:flex;gap:4px}.conv-sidebar__tool{background:transparent;border:none;padding:2px 6px;font-family:var(--font-sans);font-size:.7rem;color:var(--color-text-tertiary);cursor:pointer;border-radius:var(--radius-xs);transition:color var(--transition-fast),background var(--transition-fast)}.conv-sidebar__tool:hover{color:var(--color-text-strong);background:var(--color-surface-canvas-warm)}.conv-sidebar__tool--danger:hover{color:var(--color-semantic-danger-text)}.conv-sidebar__empty{font-family:var(--font-sans);font-size:.85rem;color:var(--color-text-tertiary);padding:12px 4px;margin:0}.conv-sidebar__list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px;overflow-y:auto;flex:1;min-height:0}.conv-sidebar-item{width:100%;display:flex;flex-direction:column;gap:4px;padding:10px 12px;background:var(--color-surface-card-top);border:none;border-radius:var(--radius-md);box-shadow:var(--shadow-mini-key);text-align:left;cursor:pointer;transition:box-shadow var(--transition-base),transform var(--transition-base)}.conv-sidebar-item:hover{box-shadow:var(--shadow-card)}.conv-sidebar-item:active{box-shadow:var(--shadow-key-pressed);transform:translateY(.5px)}.conv-sidebar-item--latest{box-shadow:inset 3px 0 0 var(--color-brand-amber),var(--shadow-mini-key)}.conv-sidebar-item__meta{font-family:var(--font-sans);font-size:.7rem;color:var(--color-text-tertiary);letter-spacing:.3px}.conv-sidebar-item__expression{font-family:var(--font-mono);font-size:.8rem;color:var(--color-text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-sidebar-item__result{font-family:var(--font-mono);font-size:1.1rem;font-weight:500;color:var(--color-text-primary);letter-spacing:-.3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-sidebar__all{background:transparent;border:none;padding:8px 4px;font-family:var(--font-sans);font-size:.8rem;color:var(--color-text-secondary);cursor:pointer;text-align:left;border-radius:var(--radius-sm);transition:color var(--transition-fast)}.conv-sidebar__all:hover{color:var(--color-text-primary)}.conv-history{display:none}.conv-focal-wrapper{display:flex;flex:1;min-height:0}.conv-focus{display:flex;flex-direction:column;gap:16px;min-height:0}.conv-card--focal{padding:32px 36px;border-radius:var(--radius-xl, 14px);flex:1;display:flex;flex-direction:column}.conv-card--focal .conv-card__meta{margin-bottom:18px}.conv-chip--dim-focal{font-size:.72rem;font-weight:500;letter-spacing:1px;padding:3px 10px}.conv-card--focal .conv-card__transcription{font-size:.95rem;color:var(--color-text-strong);margin-bottom:4px;display:flex;flex-direction:column;gap:2px;font-style:normal}.conv-card--focal .conv-card__transcription .conv-card__muted{display:block;font-size:.7rem;letter-spacing:.6px;text-transform:lowercase;color:var(--color-text-tertiary);margin:0 0 2px;font-weight:500}.conv-card__quoted{font-family:var(--font-sans);font-style:italic;color:var(--color-text-strong)}.conv-card--focal .conv-card__expression{font-family:var(--font-mono);font-size:1.2rem;color:var(--color-text-strong);letter-spacing:-.3px;margin-bottom:16px;display:flex;flex-direction:column;gap:2px}.conv-card--focal .conv-card__expression .conv-card__muted{display:block;font-size:.7rem;letter-spacing:.6px;text-transform:lowercase;color:var(--color-text-tertiary);margin-bottom:2px;font-weight:500;font-family:var(--font-sans)}.conv-card__result-label{display:block;font-size:.7rem;letter-spacing:.6px;text-transform:lowercase;color:var(--color-text-tertiary);margin-bottom:6px;font-weight:500;font-family:var(--font-sans)}.conv-card--focal .conv-card__result{font-family:var(--font-mono);font-weight:500;color:var(--color-text-primary);letter-spacing:-1.5px;line-height:1;margin:0 0 8px;display:flex;flex-direction:column;gap:4px}.conv-card__result-value{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.conv-card--focal .conv-card__result-value{font-size:clamp(3.5rem,7vw,5.5rem)}.conv-card__result-unit{font-size:.35em;font-weight:500;color:var(--color-text-secondary);letter-spacing:-.5px}.conv-card__equivalence{font-family:var(--font-sans);font-size:.85rem;color:var(--color-text-tertiary);margin:0 0 auto;padding-bottom:8px}.conv-card--focal .conv-card__result--dual{flex-direction:row;flex-wrap:wrap;align-items:baseline;gap:12px 20px}.conv-card--focal .conv-card__result--dual .conv-card__result-label{flex-basis:100%;margin-bottom:2px}.conv-card--focal .conv-card__result-value--metric{color:var(--color-text-secondary);font-size:clamp(2.2rem,4.5vw,3.5rem)}.conv-card__result-divider{font-size:.4em;color:var(--color-text-tertiary);align-self:center;padding:0 4px}.conv-card--focal .conv-card__actions{margin-top:16px;padding-top:16px;border-top:1px solid var(--color-border-faint);gap:8px}.conv-card--focal .conv-action{padding:7px 14px;font-size:.8rem}.conv-focus .conv-composer-input{display:block;padding:12px 16px;margin-bottom:0}.conv-focus .conv-composer-input .expression-input{padding:10px 14px;min-height:44px}.conv-focus .conv-composer-input__hint{display:inline-flex}.conv-controls{background:var(--gradient-card);padding:16px;gap:10px}.conv-controls .fraction-container{margin-bottom:0}.conv-controls .fraction-pad{grid-template-columns:repeat(4,1fr);gap:8px}.conv-controls .frac-btn{padding:10px 4px;font-size:.95rem}.conv-controls .keypad{flex:1;gap:8px}.conv-controls .keypad-row{gap:8px}.conv-controls .key{font-size:1.4rem;padding:14px 0;border-radius:var(--radius-lg)}.conv-controls .voice-btn{padding:14px 18px;font-size:.9rem}.conv-composer-input__dot{display:inline-block}}@media (min-width: 1400px){.conv-main{grid-template-columns:300px minmax(0,1fr) 360px;max-width:1440px;gap:20px}.conv-card--focal{padding:40px 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Code,Consolas,monospace;min-height:1.4em}.field-caret{display:inline-block;width:2px;height:1.05em;margin-left:2px;vertical-align:-.15em;background:var(--color-brand-amber-dark, var(--color-brand-amber));border-radius:1px;animation:field-caret-blink 1s steps(2,start) infinite}@keyframes field-caret-blink{to{visibility:hidden}}.stair-input.active,.easy-square-input.active{outline:2px solid var(--color-brand-amber);outline-offset:1px}@media (prefers-reduced-motion: reduce){.field-caret{animation:none}}.auth-gate{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1100;overflow-y:auto;background:var(--ok-bg, var(--color-surface-canvas))}.auth-gate-close{position:absolute;top:calc(10px + env(safe-area-inset-top));right:12px;z-index:2;min-height:44px;padding:10px 14px;border:0;border-radius:var(--radius-full);background:var(--ok-surface, #fff);box-shadow:var(--shadow-mini-key);color:var(--ok-ink-muted, var(--color-text-secondary));font-family:var(--font-sans);font-size:.85rem;font-weight:500;cursor:pointer}.auth-gate-close:active{box-shadow:var(--shadow-key-pressed);transform:translateY(.5px)}.settings-screen{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1050;overflow-y:auto;background:var(--ok-bg, var(--color-surface-canvas));color:var(--ok-ink, var(--color-text-primary));font-family:var(--ok-font-sans, var(--font-sans));padding-top:env(safe-area-inset-top,0);padding-bottom:env(safe-area-inset-bottom,0)}.settings-screen__content{max-width:560px;margin:0 auto;padding:20px;display:flex;flex-direction:column;gap:8px}.settings-screen__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px}.settings-screen__title{margin:0;font-size:1.5rem;font-weight:800;color:var(--ok-ink, var(--color-text-primary))}.settings-screen__close{width:44px;height:44px;margin-right:-8px;display:flex;align-items:center;justify-content:flex-end;background:none;border:none;color:var(--ok-ink-muted, var(--color-text-secondary));cursor:pointer;-webkit-tap-highlight-color:transparent}.settings-group{background:var(--ok-surface, var(--color-surface-card-top));border-radius:var(--ok-radius-card, 14px);padding:6px 16px;box-shadow:0 4px 12px #0f14190d}.settings-group--danger{background:var(--ok-danger-soft, #FDECEC)}.settings-group__header{width:100%;min-height:44px;display:flex;align-items:center;gap:8px;background:none;border:none;padding:0;color:var(--ok-ink, var(--color-text-primary));font-family:inherit;font-size:1rem;font-weight:700;text-align:left;cursor:pointer;-webkit-tap-highlight-color:transparent}.settings-group__icon{display:flex;color:var(--ok-ink-muted, var(--color-text-secondary))}.settings-group--danger .settings-group__header,.settings-group--danger .settings-group__icon{color:var(--ok-danger, #B91C1C)}.settings-group__title{flex:1}.settings-group__chevron{color:var(--ok-ink-muted, var(--color-text-secondary))}.settings-group__body{display:flex;flex-direction:column;gap:8px;padding:4px 0 8px}.settings-row{width:100%;min-height:44px;display:flex;align-items:center;gap:16px;background:none;border:none;padding:4px 0;color:var(--ok-ink-muted, var(--color-text-secondary));font-family:inherit;text-align:left;cursor:pointer;-webkit-tap-highlight-color:transparent}.settings-row--static{cursor:default}.settings-row__text{flex:1;display:flex;flex-direction:column;gap:2px;min-width:0}.settings-row__label{margin:0;font-size:1rem;font-weight:700;color:var(--ok-ink, var(--color-text-primary));word-break:break-word}.settings-row__sub,.settings-hint{margin:0;font-size:13px;line-height:19px;color:var(--ok-ink-muted, var(--color-text-secondary))}.settings-counts{display:grid;grid-template-columns:1fr auto;gap:6px 12px;padding:6px 0;font-size:13px;color:var(--ok-ink-muted, var(--color-text-secondary))}.settings-counts strong{color:var(--ok-ink, var(--color-text-primary));font-variant-numeric:tabular-nums}.settings-ghost-btn,.settings-primary-btn,.settings-danger-btn{min-height:var(--ok-touch-min, 48px);display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 16px;border-radius:var(--ok-radius-button, 12px);font-family:inherit;font-size:1rem;font-weight:700;cursor:pointer;-webkit-tap-highlight-color:transparent}.settings-ghost-btn{margin-top:4px;background:transparent;border:1.5px solid var(--ok-ink, var(--color-text-primary));color:var(--ok-ink, var(--color-text-primary))}.settings-primary-btn{margin-top:4px;background:var(--ok-brand, var(--color-brand-amber));border:none;color:var(--ok-on-brand, var(--color-text-primary))}.settings-danger-btn{background:var(--ok-surface, var(--color-surface-card-top));border:1.5px solid var(--ok-danger, #B91C1C);color:var(--ok-danger, #B91C1C);min-height:50px}.settings-danger-btn--solid{background:var(--ok-danger, #B91C1C);color:#fff}.settings-ghost-btn:disabled,.settings-primary-btn:disabled,.settings-danger-btn:disabled{opacity:.6;cursor:default}.settings-ghost-btn:active,.settings-primary-btn:active,.settings-danger-btn:active{opacity:.8}.settings-confirm-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1060;background:#0f14198c;display:flex;align-items:center;justify-content:center;padding:24px}.settings-confirm{width:100%;max-width:400px;background:var(--ok-surface, var(--color-surface-card-top));border-radius:var(--ok-radius-card, 14px);padding:20px;box-shadow:0 12px 32px #0f141933}.settings-confirm__title{margin:0 0 8px;font-size:1.15rem;font-weight:800;color:var(--ok-ink, var(--color-text-primary))}.settings-confirm__text{margin:0 0 16px;font-size:.95rem;line-height:1.45;color:var(--ok-ink-muted, var(--color-text-secondary))}.settings-confirm__actions{display:flex;flex-direction:column;gap:8px}.settings-confirm__actions .settings-ghost-btn{margin-top:0;order:2}.settings-confirm__actions .settings-danger-btn{order:1}@media (min-width: 480px){.settings-confirm__actions{flex-direction:row;justify-content:flex-end}.settings-confirm__actions .settings-ghost-btn{order:1}.settings-confirm__actions .settings-danger-btn{order:2}}:root{--color-surface-canvas: #F2F1EC;--color-surface-canvas-warm: #EFECE3;--color-surface-card-top: #FFFFFF;--color-surface-card-bottom: #FBF9F3;--color-surface-inset: #EFECE3;--color-text-primary: #1C1A17;--color-text-strong: #1F2937;--color-text-secondary: #6F6A60;--color-text-tertiary: #9CA3AF;--color-text-inverse: #FFFFFF;--color-text-on-charcoal: #D9940F;--color-brand-amber: #D9940F;--color-brand-amber-dark: #9A6A0B;--color-brand-amber-glow: rgba(217, 148, 15, .4);--color-charcoal-bottom: #1A1F2C;--color-semantic-area-bg: #E9F3EC;--color-semantic-area-text: #1E5C43;--color-semantic-area-border: #2E9E5B;--color-semantic-length-bg: #E6F1FB;--color-semantic-length-text: #0C447C;--color-semantic-count-bg: #F1EFE8;--color-semantic-count-text: #444441;--color-semantic-danger-bg: #FBE9E7;--color-semantic-danger-text: #B3261E;--color-semantic-danger-border: #F09595;--color-semantic-warn-bg: #F7EDDA;--color-semantic-warn-text: #9A6A0B;--color-border-subtle: rgba(15, 20, 25, .04);--color-border-faint: rgba(15, 20, 25, .06);--color-border-soft: rgba(15, 20, 25, .08);--color-border-strong: rgba(15, 20, 25, .2);--gradient-key-rest: radial-gradient(ellipse at center top, #FFFFFF 0%, #F0EEE6 60%, #E3E0D3 100%);--gradient-key-pressed: radial-gradient(ellipse at center top, #ECEAE1 0%, #E3E0D3 100%);--gradient-key-dark: radial-gradient(ellipse at center top, #2F3744 0%, #1A1F2C 60%, #0F1419 100%);--gradient-card: radial-gradient(ellipse at center top, #FFFFFF 0%, #FBF9F3 100%);--gradient-dark-screen: radial-gradient(ellipse at top, #2E3440 0%, #242931 50%, #1A1F2C 100%);--gradient-voice-active: radial-gradient(ellipse at center top, #E3AF4B 0%, #D9940F 60%, #9A6A0B 100%);--gradient-avatar: radial-gradient(ellipse at center top, #3A4252 0%, #1A1F2C 100%);--shadow-key: inset 0 1px 0 rgba(255, 255, 255, .95), inset 0 -2px 4px rgba(15, 20, 25, .05), 0 1px 2px rgba(15, 20, 25, .04);--shadow-key-pressed: inset 0 2px 4px rgba(15, 20, 25, .08), 0 0 0 rgba(0, 0, 0, 0);--shadow-key-dark: inset 0 1px 0 rgba(255, 255, 255, .08), inset 0 -2px 4px rgba(0, 0, 0, .3), 0 1px 2px rgba(15, 20, 25, .2);--shadow-card: inset 0 1px 0 rgba(255, 255, 255, .9), 0 1px 2px rgba(15, 20, 25, .04);--shadow-inset: inset 0 2px 4px rgba(15, 20, 25, .06), inset 0 -1px 0 rgba(255, 255, 255, .5);--shadow-mini-key: inset 0 1px 0 rgba(255, 255, 255, .9), inset 0 -1px 2px rgba(15, 20, 25, .04), 0 1px 1px rgba(15, 20, 25, .03);--shadow-avatar: inset 0 1px 0 rgba(255, 255, 255, .1), 0 1px 2px rgba(15, 20, 25, .1);--shadow-voice-active: inset 0 1px 0 rgba(255, 255, 255, .4), inset 0 -2px 4px rgba(0, 0, 0, .15), 0 4px 20px rgba(217, 148, 15, .4);--shadow-focus-ring: 0 0 0 3px #D9940F33;--radius-xs: 4px;--radius-sm: 6px;--radius-md: 8px;--radius-key: 10px;--radius-lg: 12px;--radius-xl: 14px;--radius-full: 9999px;--transition-fast: .1s ease;--transition-base: .12s cubic-bezier(.34, 1.2, .64, 1);--font-sans: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;--spacing-key-gap: 5px;--spacing-key-gap-mobile: 4px;--spacing-card-padding: 14px;--spacing-card-padding-lg: 18px}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%}body{font-family:var(--font-sans);background:var(--color-surface-canvas);color:var(--color-text-primary);min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button{font-family:inherit}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}