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0;border-radius:10px;min-height:40px}.toggle{align-items:center;gap:var(--space-2);cursor:pointer;color:var(--text-secondary);font-size:14px;display:inline-flex}.toggle input{accent-color:var(--accent);width:18px;height:18px}.back-to-narration{top:var(--space-2);z-index:2;margin:0 auto var(--space-3);background:var(--surface-raised);border:1px solid var(--accent);color:var(--text-primary);padding:var(--space-2) var(--space-4);cursor:pointer;border-radius:999px;display:flex;position:sticky}.shell-head{text-align:center;margin-bottom:var(--space-5)}.shell-head__title{color:var(--text-secondary);font-size:14px}.segments{margin-top:var(--space-2);grid-template-columns:repeat(4,1fr);gap:6px;display:grid}.segments span{background:var(--surface-raised);border-radius:999px;height:5px}.segments span.done{background:var(--accent);opacity:.55}.segments span.current{background:var(--accent)}.prompt{margin:0 0 var(--space-5);font-size:20px;font-weight:600;line-height:1.4}.prompt-instruction{color:var(--text-secondary);margin:0 0 var(--space-3);font-size:15px}.card-example{background:var(--surface-raised);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius-card);padding:var(--space-5);margin:0 0 var(--space-4);font-size:19px;font-weight:600;line-height:1.4}.bank-meta{justify-content:space-between;gap:var(--space-3);margin-bottom:var(--space-3);display:flex}.phrase-chip{background:var(--surface-raised);border:1px solid var(--border);padding:var(--space-2) var(--space-3);border-radius:10px;font-weight:600;display:inline-block}.options{gap:var(--space-3);margin:0;padding:0;list-style:none;display:grid}.option{text-align:left;cursor:pointer;align-items:center;gap:var(--space-3);width:100%;min-height:56px;padding:var(--space-3) var(--space-4);font-size:var(--size-answer);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-button);transition:border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);grid-template-columns:1fr 26px;line-height:1.35;display:grid}.option:hover:not(:disabled){border-color:var(--text-muted)}.option__mark{border:2px solid var(--text-muted);border-radius:50%;place-items:center;width:24px;height:24px;display:grid}.option--viewed{background:var(--surface-raised)}.option--viewed .option__mark{border-style:dashed}.option--selected.option--valid{border-color:var(--success);background:var(--success-surface)}.option--selected.option--valid .option__mark{background:var(--success);color:var(--on-accent);border:none}.option--selected.option--invalid{border-color:var(--error);background:var(--error-surface)}.option--selected.option--invalid .option__mark{background:var(--error);color:var(--on-accent);border:none}.feedback{margin-top:var(--space-4);border-radius:var(--radius-card);padding:var(--space-4);gap:var(--space-3);animation:rise var(--t-fast) var(--ease);grid-template-columns:28px 1fr;display:grid}.feedback--valid{background:var(--success-surface);border:1px solid #54e3ab59}.feedback--invalid{background:var(--error-surface);border:1px solid #ff9a9a59}.feedback__heading{margin:0;font-weight:700}.feedback--valid .feedback__heading,.feedback--valid .feedback__icon{color:var(--success)}.feedback--invalid .feedback__heading,.feedback--invalid .feedback__icon{color:var(--error)}.feedback__text{color:var(--text-primary);margin:2px 0 0}.explore-hint{margin-top:var(--space-3);text-align:center}@keyframes rise{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.scene{color:var(--text-secondary);margin:0 0 var(--space-4);font-size:15px}.chat-panel{background:var(--chat-panel);border:1px solid var(--border);border-radius:var(--radius-card);margin-bottom:var(--space-5);overflow:hidden}.chat-panel__head{align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);background:var(--chat-head);border-bottom:1px solid #e9edef14;display:flex}.chat-panel__avatar{background:var(--chat-in);width:36px;height:36px;color:var(--chat-meta);border-radius:50%;flex:none;place-items:center;display:grid}.chat-panel__name{color:var(--chat-text);font-weight:600}.chat{gap:var(--space-2);padding:var(--space-4) var(--space-3);flex-direction:column;min-height:96px;display:flex}.chat__empty{color:var(--chat-meta);text-align:center;margin:auto;font-size:14px}.bubble{max-width:85%;padding:var(--space-3) var(--space-4);animation:rise var(--t-fast) var(--ease);border-radius:18px;line-height:1.4}.bubble--you{background:var(--chat-out);color:var(--chat-text);border-bottom-right-radius:4px;align-self:flex-end}.bubble--them{background:var(--chat-in);color:var(--chat-text);border-bottom-left-radius:4px;align-self:flex-start}.bubble__who{letter-spacing:.06em;text-transform:uppercase;color:var(--chat-meta);margin-bottom:2px;font-size:11px;display:block}.done-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:var(--space-6) var(--space-5);text-align:center}.done-card__icon{color:var(--accent);margin-bottom:var(--space-3)}.assembled{background:var(--accent-soft);border-radius:var(--radius-card);padding:var(--space-4) var(--space-5);text-align:left;border:1px solid #ff650a73;font-size:19px;font-weight:600;line-height:1.4}.recap-list{gap:var(--space-2);margin:0;padding:0;list-style:none;display:grid}.recap-list li{justify-content:space-between;gap:var(--space-3);padding:var(--space-3) var(--space-4);background:var(--surface);border-radius:var(--radius-button);display:flex}.review-item{color:inherit;text-decoration:none}.pill{background:var(--surface-raised);color:var(--text-secondary);border-radius:999px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-block}.pill--accent{background:var(--accent-soft);color:var(--accent)}.empty{text-align:center;color:var(--text-secondary);padding:var(--space-8) 0}.settings-row{justify-content:space-between;align-items:center;gap:var(--space-3);padding:var(--space-4) 0;border-bottom:1px solid var(--surface-raised);display:flex}select{background:var(--surface);color:var(--text-primary);border:1px solid var(--border);min-height:40px;padding:0 var(--space-3);border-radius:10px}.error-state{text-align:center;padding:var(--space-8) var(--space-4)}.error-state code{color:var(--text-muted);font-size:12px}.action-caption{color:var(--text-secondary);margin:var(--space-1) 0;max-width:85%;animation:rise var(--t-fast) var(--ease);font-size:15px;font-style:italic}.action-caption--right{text-align:right;align-self:flex-end}.action-caption--left{align-self:flex-start}.turn--pending{outline:1px dashed var(--chat-pending);outline-offset:3px}.action-caption.turn--pending{outline:none}.learnings{gap:var(--space-2);margin:0;padding:0;list-style:none;display:grid}.learnings li{padding:var(--space-3) var(--space-4) var(--space-3) calc(var(--space-4) + 14px);background:var(--surface);border-radius:var(--radius-button);font-weight:600;line-height:1.4;position:relative}.learnings li:before{content:"";left:var(--space-4);background:var(--accent);width:6px;height:6px;margin-top:-3px;position:absolute;top:50%;transform:rotate(45deg)}.variation{gap:var(--space-3);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:var(--space-4);flex-direction:column;display:flex}.variation .scene,.variation .bubble{margin:0}.chapter-description{color:var(--text-secondary);margin:var(--space-1) 0 0}.route__context{color:var(--text-secondary);margin-top:2px;font-size:14px}.tile--locked{opacity:.6}.tile--locked .tile__num{color:var(--text-muted)}.reading__end{height:1px}.intro-btn{width:auto;min-width:var(--tap-min);border-radius:12px;flex-direction:column;justify-content:center;align-items:center;gap:0;display:inline-flex}.intro-btn__label{letter-spacing:.06em;text-transform:uppercase;color:var(--text-secondary);font-size:10px}body:has(dialog[open]){overflow:hidden}.intro-sheet{color:var(--text-primary);width:100%;max-width:var(--reading-column);background:0 0;border:none;max-height:100dvh;margin:auto auto 0;padding:0}.intro-sheet::backdrop{background:#05080ab8}.intro-sheet__panel{background:var(--background);border:1px solid var(--border);max-height:92dvh;animation:rise var(--t-fast) var(--ease);border-bottom:none;border-radius:20px 20px 0 0;flex-direction:column;display:flex}.intro-sheet__head{justify-content:space-between;align-items:flex-start;gap:var(--space-3);padding:var(--space-4) var(--gutter) var(--space-3);border-bottom:1px solid var(--surface-raised);display:flex}.intro-sheet__body{padding:var(--space-5) var(--gutter) 0;overscroll-behavior:contain;overflow-y:auto}.intro-sheet__foot{padding:var(--space-3) var(--gutter) calc(var(--space-4) + var(--safe-bottom));border-top:1px solid var(--surface-raised)}@media (width>=700px){.intro-sheet{margin:auto}.intro-sheet__panel{border-bottom:1px solid var(--border);border-radius:20px;max-height:86dvh}}.app-menu{color:var(--text-primary);background:0 0;border:none;width:min(320px,86vw);max-width:none;height:100dvh;max-height:100dvh;margin:0 0 0 auto;padding:0}.app-menu::backdrop{background:#05080ab8}.app-menu__panel{background:var(--surface);border-left:1px solid var(--border);height:100%;padding:var(--space-4) var(--space-4) calc(var(--space-6) + var(--safe-bottom));animation:slide-in var(--t-fast) var(--ease)}.app-menu__head{margin-bottom:var(--space-4);justify-content:space-between;align-items:center;display:flex}.app-menu__brand{font-family:var(--font-display);letter-spacing:.3em;color:var(--accent);padding-left:var(--space-2);font-size:22px;font-weight:700}.app-menu__list{gap:var(--space-1);margin:0;padding:0;list-style:none;display:grid}.app-menu__link{align-items:center;gap:var(--space-3);min-height:52px;padding:0 var(--space-3);border-radius:var(--radius-button);color:var(--text-primary);font-weight:600;text-decoration:none;display:flex}.app-menu__link:hover{background:var(--surface-raised)}.app-menu__link.active{color:var(--accent);background:var(--accent-soft)}@keyframes slide-in{0%{opacity:0;transform:translate(24px)}to{opacity:1;transform:none}}.page-head{justify-content:space-between;align-items:center;gap:var(--space-3);display:flex}.hero__menu{top:var(--space-4);right:var(--space-2);position:absolute}.account-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:var(--space-5);gap:var(--space-3);display:grid}.account-row{justify-content:space-between;gap:var(--space-3);display:flex}.account-row dt{color:var(--text-secondary)}.account-row dd{text-align:right;margin:0;font-weight:600}.placeholder-tag{letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);border:1px dashed var(--border);margin-left:var(--space-2);vertical-align:middle;border-radius:999px;padding:1px 8px;font-size:11px;font-weight:600;display:inline-block}.btn--danger{color:var(--error);background:0 0;border-color:#ff9a9a80;width:100%}.btn--danger:hover{background:var(--error-surface)}.modal{border:1px solid var(--border);border-radius:var(--radius-card);background:var(--surface);color:var(--text-primary);padding:var(--space-5);width:min(420px,90vw)}.modal::backdrop{background:#05080ab8}.reading .word{transition:background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);border-radius:4px}.reading .word--active{background:var(--accent);color:var(--on-accent);box-shadow:0 0 0 2px var(--accent)}.intro-sheet__foot{gap:var(--space-3);flex-direction:column;display:flex}.player--compact{padding:var(--space-3) var(--space-4);margin:0;position:static}.player--compact .player__play{width:52px;height:52px}.player--compact .back-to-narration{margin:0 auto var(--space-2);position:static}.reading .intro-title{margin:0 0 var(--space-5)}.intro-sheet .reading .intro-title{font-size:28px}.auth-page{justify-content:center;gap:var(--space-4)}.auth-brand{font-family:var(--font-display);letter-spacing:.4em;color:var(--accent);font-size:26px;font-weight:700}.auth-title{margin:var(--space-4) 0 0}.auth-lede{margin:0}.auth-form{gap:var(--space-4);margin-top:var(--space-2);display:grid}.auth-link{width:100%}.field{gap:var(--space-2);display:grid}.field label{font-size:15px;font-weight:600}.field input{min-height:52px;padding:0 var(--space-4);font:inherit;color:var(--text-primary);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-button);font-size:17px}.field input:focus-visible{outline:3px solid var(--accent);outline-offset:1px;border-color:var(--accent)}.field__password{position:relative}.field__password input{width:100%;padding-right:56px}.field__password .icon-btn{color:var(--text-secondary);position:absolute;top:50%;right:2px;transform:translateY(-50%)}.form-error{padding:var(--space-3) var(--space-4);border-radius:var(--radius-button);background:var(--error-surface);color:var(--error);border:1px solid #ff9a9a59;margin:0}.app-menu__panel{flex-direction:column;display:flex}.app-menu__foot{border-top:1px solid var(--surface-raised);padding-top:var(--space-3);margin-top:auto}.app-menu__foot .app-menu__link{cursor:pointer;width:100%;font:inherit;background:0 0;border:none;font-weight:600}.app-menu__email{padding:0 var(--space-3);margin:0 0 var(--space-1);overflow-wrap:anywhere}.sync-status{padding-left:22px;position:relative}.sync-status:before{content:"";background:var(--text-muted);border-radius:50%;width:9px;height:9px;position:absolute;top:.55em;left:4px}.sync-status--synced:before{background:var(--success)}.sync-status--pending:before,.sync-status--loading:before{background:var(--accent)}.sync-status--offline:before,.sync-status--error:before{background:var(--error)}.brand-link{min-height:var(--tap-min);font-family:var(--font-display);letter-spacing:.35em;color:var(--accent);align-self:flex-start;align-items:center;font-size:22px;font-weight:700;text-decoration:none;display:inline-flex}.brand-link:hover{color:var(--accent-pressed)}.brand-link--center{letter-spacing:.3em;place-self:center;padding-left:.3em;font-size:20px}