:root{--bg:#f8fafc;--panel:#fff;--panel-strong:#fff;--surface-subtle:#f9fafb;--surface-muted:#f3f4f6;--field:#fff;--overlay:#fff;--selected-fill:#ecfdf5;--selected-stroke:#a7f3d0;--ink:#0f172a;--text:#0f172a;--muted:#64748b;--line:#e2e8f0;--line-strong:#cbd5e1;--accent:#10b981;--accent-strong:#059669;--accent-soft:#ecfdf5;--accent-stroke:#a7f3d0;--accent-tint:#10b9811a;--accent-tint-strong:#10b9812e;--mode-vocabulary:#10b981;--mode-vocabulary-strong:#059669;--mode-vocabulary-soft:#ecfdf5;--mode-vocabulary-stroke:#a7f3d0;--mode-grammar:#10b981;--mode-grammar-strong:#059669;--mode-grammar-soft:#10b9811a;--mode-grammar-stroke:#10b9812e;--mode-exam:#10b981;--mode-exam-strong:#059669;--mode-exam-soft:#10b9811a;--mode-exam-stroke:#10b9812e;--warning:#f59e0b;--warning-strong:#b45309;--warning-soft:#f59e0b1a;--warm:var(--warning);--success:#16a34a;--danger:#ef4444;--danger-soft:#ef44441a;--scrim:#0f172a61;--shadow:0 0 0 1px #e2e8f0f2, 0 10px 40px -12px #10b98124;--card-shadow:0 0 0 1px #e2e8f0f2, 0 16px 36px -18px #0f172a2e;--hero-shadow:0 18px 42px -20px #0f172a38;--control-shadow:0 8px 20px -14px #0f172a33;--radius:14px;--radius-lg:24px;--radius-md:16px;--radius-sm:14px;--sidebar-w:280px;--page-background:#f8fafc;--color-scheme:light;--placeholder:#64748bb3;--on-accent:#fff;--chart-waveform:#10b981b8;--chart-pitch:#059669;--chart-intensity:#10b981;--chart-duration:#64748b}:root[data-theme=dark]{--bg:#1e1e1e;--panel:#252526;--panel-strong:#2d2d30;--surface-subtle:#2d2d30;--surface-muted:#252526;--field:#252526;--overlay:#252526;--selected-fill:#10b9812e;--selected-stroke:#10b98152;--ink:#f3f3f3;--text:#f3f3f3;--muted:#a6a6a6;--line:#ffffff1f;--line-strong:#fff3;--accent:#34d399;--accent-strong:#6ee7b7;--accent-soft:#10b9812e;--accent-stroke:#10b98152;--mode-vocabulary:#34d399;--mode-vocabulary-strong:#6ee7b7;--mode-vocabulary-soft:#10b9812e;--mode-vocabulary-stroke:#10b98152;--mode-grammar:#34d399;--mode-grammar-strong:#6ee7b7;--mode-grammar-soft:#10b9812e;--mode-grammar-stroke:#10b98152;--mode-exam:#34d399;--mode-exam-strong:#6ee7b7;--mode-exam-soft:#10b9812e;--mode-exam-stroke:#10b98152;--danger-soft:#ef444429;--warning-strong:#fcd34d;--warning-soft:#f59e0b29;--scrim:#0000008f;--shadow:0 12px 28px #00000038;--card-shadow:0 12px 28px #0003;--hero-shadow:0 16px 34px #00000038;--control-shadow:0 8px 18px #0000002e;--page-background:#1e1e1e;--color-scheme:dark;--placeholder:#a6a6a6b8;--on-accent:#022c22;--chart-waveform:#34d399b8;--chart-pitch:#6ee7b7;--chart-intensity:#34d399;--chart-duration:#a6a6a6}.home-continue-card,.mode-card,.bank-page,.chat-page-shell,.mistakes-page{--mode-accent:var(--accent);--mode-accent-strong:var(--accent-strong);--mode-accent-soft:var(--accent-soft);--mode-accent-stroke:var(--accent-stroke)}.home-continue-card[data-mode=quick_learn],.mode-card[data-mode=vocabulary],.bank-page[data-mode=vocabulary],.chat-page-shell[data-mode=quick_learn],.mistakes-page[data-mode=vocabulary]{--mode-accent:var(--mode-vocabulary);--mode-accent-strong:var(--mode-vocabulary-strong);--mode-accent-soft:var(--mode-vocabulary-soft);--mode-accent-stroke:var(--mode-vocabulary-stroke)}.home-continue-card[data-mode=grammar],.mode-card[data-mode=grammar],.bank-page[data-mode=grammar],.chat-page-shell[data-mode=grammar],.mistakes-page[data-mode=grammar]{--mode-accent:var(--mode-grammar);--mode-accent-strong:var(--mode-grammar-strong);--mode-accent-soft:var(--mode-grammar-soft);--mode-accent-stroke:var(--mode-grammar-stroke)}.home-continue-card[data-mode=exam_drill],.mode-card[data-mode=exam],.bank-page[data-mode=exam],.chat-page-shell[data-mode=exam_drill],.mistakes-page[data-mode=exam]{--mode-accent:var(--mode-exam);--mode-accent-strong:var(--mode-exam-strong);--mode-accent-soft:var(--mode-exam-soft);--mode-accent-stroke:var(--mode-exam-stroke)}.mode-card[data-mode=speaking]{--mode-accent:var(--accent);--mode-accent-strong:var(--accent-strong);--mode-accent-soft:var(--accent-soft);--mode-accent-stroke:var(--accent-stroke)}.brand-logo{align-items:center;gap:8px;min-width:0;line-height:1;display:inline-flex}.brand-logo>span:last-child{min-width:0}.brand-mark-image{object-fit:cover;border-radius:22%;flex:none;display:block;box-shadow:0 4px 12px #12261a14}*{box-sizing:border-box}html{scroll-behavior:smooth}body{min-height:100vh;color:var(--ink);background:var(--page-background);color-scheme:var(--color-scheme);margin:0;font-family:Circular,Circular Std,Inter,-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,sans-serif;font-weight:400}a{color:inherit;text-decoration:none}.app-layout{min-height:100vh;display:flex}.app-main{flex-direction:column;flex:1;min-width:0;display:flex}.sidebar{width:var(--sidebar-w);-webkit-backdrop-filter:none;backdrop-filter:none;border-right:1px solid var(--line);background:#fff;flex-direction:column;flex-shrink:0;height:100vh;padding:24px 16px;display:flex;position:sticky;top:0;overflow-y:auto}.sidebar-brand{flex-direction:column;gap:2px;margin-bottom:28px;padding:0 8px;display:flex}.sidebar-logo{letter-spacing:.03em;color:var(--accent-strong);font-size:1.25rem;font-weight:700}.sidebar-tagline{color:var(--muted);font-size:.78rem}.sidebar-nav{flex-direction:column;gap:4px;display:flex}.sidebar-link{border-radius:12px;align-items:center;gap:10px;padding:10px 12px;font-size:.92rem;transition:background .15s,color .15s;display:flex}.sidebar-link:hover{background:var(--selected-fill)}.sidebar-link-active{background:var(--selected-fill);color:var(--accent-strong);font-weight:700}.sidebar-icon{text-align:center;width:24px;font-size:1.1rem}.sidebar.sidebar-chat-collapsed{background:var(--panel);align-items:center;width:56px;padding:14px 8px}.sidebar-chat-drawer-button{appearance:none;background:var(--surface-subtle);width:40px;height:40px;color:var(--accent-strong);cursor:pointer;border:0;border-radius:999px;place-items:center;display:inline-grid}.sidebar-chat-drawer-button:hover,.sidebar-chat-drawer-button:focus-visible{background:var(--accent-soft);outline:none}.home-page{--mode-vocabulary:#34d66b;--mode-vocabulary-strong:#118b3e;--mode-vocabulary-soft:#e9f8ee;--mode-vocabulary-stroke:#c8efd4;--mode-grammar:#f97316;--mode-grammar-strong:#b6530b;--mode-grammar-soft:#fff2e8;--mode-grammar-stroke:#ffd4b2;--mode-exam:#f05f74;--mode-exam-strong:#ba3349;--mode-exam-soft:#fff0f2;--mode-exam-stroke:#fac8d0;max-width:940px;padding:36px 32px 44px}.home-hero{margin-bottom:32px}.home-hero-refined{box-shadow:var(--shadow);background:radial-gradient(circle at 100% 0,#ffffffeb,#0000 40%),linear-gradient(#fffffffa,#f8f9faf0);border-radius:30px;padding:28px 30px;position:relative}.home-hero-copy{gap:10px;max-width:34rem;display:grid}.home-hero-kicker{letter-spacing:.08em;text-transform:uppercase;color:var(--mode-vocabulary-strong);font-size:.82rem;font-weight:700}.home-hero h1{color:var(--ink);margin:0 0 8px;font-size:clamp(1.8rem,4vw,2.6rem);line-height:1.05}.home-hero p{color:var(--muted);max-width:40ch;margin:0;line-height:1.6}.home-section{margin-bottom:28px}.home-section-soft{padding-top:8px}.home-section-heading{justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:14px;display:flex}.home-section h2{margin:0;font-size:1.15rem}.home-section-heading p{color:var(--muted);margin:0;font-size:.88rem}.home-continue-card{box-shadow:var(--shadow);background:linear-gradient(#fffffffa,#f8f9faf2);border-radius:26px;justify-content:space-between;align-items:center;gap:20px;padding:20px 22px;transition:transform .18s,box-shadow .18s;display:flex}.home-continue-card:hover{transform:translateY(-2px);box-shadow:0 22px 48px #1f293314}.home-continue-copy{gap:4px;min-width:0;display:grid}.home-continue-label{letter-spacing:.08em;text-transform:uppercase;color:var(--mode-accent-strong);font-size:.78rem;font-weight:700}.home-continue-copy strong{font-size:1.25rem;line-height:1.15}.home-continue-copy span:last-child{color:var(--muted);font-size:.92rem}.home-continue-stats{text-align:right;white-space:nowrap;justify-items:end;gap:4px;display:grid}.home-continue-stats span:first-child{color:var(--mode-accent-strong);font-size:1.3rem;font-weight:700}.home-continue-stats span:last-child{color:var(--muted);font-size:.88rem}.home-modes{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;display:grid}.mode-card{text-align:center;background:#ffffffc2;border:1px solid #e8eaedbd;border-radius:22px;flex-direction:column;align-items:center;gap:8px;padding:20px 16px;transition:box-shadow .2s,transform .15s,border-color .15s;display:flex}.mode-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.mode-card[data-mode]{border-color:var(--mode-accent-stroke)}.mode-card[data-mode]:hover{border-color:var(--mode-accent)}.mode-icon{width:44px;height:44px;color:var(--ink);background:#f8f9fae6;border:1px solid #e8eaeda3;border-radius:16px;justify-content:center;align-items:center;font-size:1.5rem;display:flex}.mode-card[data-mode] .mode-icon{background:var(--mode-accent-soft);border-color:var(--mode-accent-stroke)}.mode-card[data-mode] .mode-title{color:var(--mode-accent-strong)}.mode-title{font-size:1rem;font-weight:700}.mode-desc{color:var(--muted);font-size:.82rem}.home-refs{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}.ref-card{background:#ffffffd1;border:1px solid #e8eaedbd;border-radius:20px;flex-direction:column;gap:4px;padding:18px;transition:box-shadow .2s;display:flex}.ref-card:hover{box-shadow:var(--shadow)}.ref-title{font-weight:700}.ref-desc{color:var(--muted);font-size:.85rem}.speaking-page{gap:24px;width:min(1120px,100%);padding:36px 32px 64px;display:grid}.speaking-topbar{box-shadow:var(--shadow);background:linear-gradient(#fffffffa,#f8f9faf0);border:1px solid #e8eaedcc;border-radius:28px;justify-content:space-between;align-items:flex-start;gap:18px;padding:28px;display:flex}.speaking-topbar span,.speaking-summary-copy span{color:var(--mode-grammar-strong);letter-spacing:.08em;text-transform:uppercase;font-size:.78rem;font-weight:700}.speaking-topbar h1,.speaking-summary-copy h2,.speaking-history-head h2,.speaking-empty-report h2{color:var(--ink);margin:4px 0;font-size:clamp(1.8rem,4vw,2.5rem);line-height:1.05}.speaking-topbar p,.speaking-history-head p,.speaking-empty-report p,.speaking-panel-head p{color:var(--muted);margin:0;line-height:1.55}.speaking-history-entry,.speaking-primary-button,.speaking-secondary-button,.speaking-upload-button,.speaking-history-card button{appearance:none;border:1px solid var(--line);background:var(--panel-strong);color:var(--ink);cursor:pointer;min-height:44px;font:inherit;white-space:nowrap;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:0 18px;font-weight:700;transition:transform .16s,box-shadow .16s,border-color .16s;display:inline-flex}.speaking-history-entry:hover,.speaking-primary-button:hover,.speaking-secondary-button:hover,.speaking-upload-button:hover,.speaking-history-card button:hover{box-shadow:var(--shadow);transform:translateY(-1px)}.speaking-history-entry{color:var(--mode-grammar-strong);background:var(--mode-grammar-soft);border-color:var(--mode-grammar-stroke)}.speaking-primary-button{color:#fff;background:var(--mode-grammar);border-color:var(--mode-grammar)}.speaking-secondary-button{color:var(--mode-grammar-strong);background:var(--mode-grammar-soft);border-color:var(--mode-grammar-stroke)}.speaking-secondary-button:disabled{cursor:not-allowed;opacity:.55;transform:none}.speaking-upload-button input{display:none}.speaking-recorder-card,.speaking-summary-card,.speaking-report-panel,.speaking-history-page,.speaking-empty-report{box-shadow:var(--shadow);background:#ffffffeb;border:1px solid #e8eaedc7;border-radius:28px}.speaking-recorder-card,.speaking-history-page,.speaking-empty-report{padding:26px}.speaking-recorder-main{gap:18px;display:grid}.speaking-recorder-main label{gap:8px;max-width:320px;display:grid}.speaking-recorder-main label span{color:var(--muted);font-size:.84rem;font-weight:700}.speaking-recorder-main select,.speaking-history-head select{border:1px solid var(--line);background:var(--panel-strong);min-height:46px;color:var(--ink);font:inherit;border-radius:16px;padding:0 14px}.speaking-recorder-actions{flex-wrap:wrap;gap:10px;display:flex}.speaking-file-name{color:var(--muted);overflow-wrap:anywhere;margin:0}.speaking-audio{width:100%;max-width:760px}.speaking-error{color:var(--danger);margin:0;font-weight:700}.speaking-report{gap:22px;display:grid}.speaking-summary-card{gap:22px;padding:28px;display:grid}.speaking-score-row{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.speaking-score-row div,.speaking-metric,.speaking-stat,.speaking-clarity-score{background:#f8f9fac7;border:1px solid #e8eaedbd;border-radius:18px;gap:5px;padding:16px;display:grid}.speaking-score-row span,.speaking-metric span,.speaking-stat span,.speaking-clarity-score span,.speaking-label{color:var(--muted);font-size:.82rem;font-weight:700}.speaking-score-row strong,.speaking-metric strong,.speaking-stat strong,.speaking-clarity-score strong{color:var(--ink);font-size:clamp(1.3rem,3vw,1.85rem);line-height:1.1}.speaking-metric small{color:var(--muted);line-height:1.45}.speaking-meta-row{flex-wrap:wrap;gap:10px;display:flex}.speaking-meta-row span{background:var(--surface-subtle);color:var(--muted);border-radius:999px;padding:8px 12px;font-size:.9rem;font-weight:700}.speaking-report-panel{padding:24px}.speaking-panel-head,.speaking-history-head{justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:18px;display:flex}.speaking-panel-head h3,.speaking-section-title h2{color:var(--ink);margin:0;font-size:1.35rem}.speaking-panel-head>span{background:var(--mode-grammar-soft);color:var(--mode-grammar-strong);border-radius:999px;padding:8px 12px;font-size:.84rem;font-weight:700}.speaking-transcript{color:var(--ink);margin:0;font-size:1.2rem;line-height:1.65}.speaking-word-list{flex-wrap:wrap;gap:8px;margin-top:18px;display:flex}.speaking-word-list span{background:var(--surface-subtle);color:var(--ink);border-radius:999px;padding:7px 10px;font-size:.9rem}.speaking-section-title{gap:6px;padding:8px 4px 0;display:grid}.speaking-section-title p{color:var(--muted);margin:0}.speaking-analysis-list{gap:12px;display:grid}.speaking-analysis-entry{appearance:none;width:100%;box-shadow:var(--shadow);cursor:pointer;text-align:left;background:#ffffffeb;border:1px solid #e8eaedc7;border-radius:22px;align-items:center;gap:14px;padding:16px;transition:transform .16s,box-shadow .16s,border-color .16s;display:flex}.speaking-analysis-entry:hover{transform:translateY(-1px)}.speaking-analysis-entry-icon{border-radius:16px;place-items:center;width:52px;height:52px;font-size:1.5rem;font-weight:700;display:grid}.speaking-analysis-entry.is-waveform .speaking-analysis-entry-icon,.speaking-analysis-entry.is-pitch .speaking-analysis-entry-icon,.speaking-analysis-entry.is-intensity .speaking-analysis-entry-icon,.speaking-analysis-entry.is-duration .speaking-analysis-entry-icon{background:var(--accent-soft);color:var(--accent-strong)}.speaking-analysis-entry-copy{flex:1;gap:4px;min-width:0;display:grid}.speaking-analysis-entry-copy strong{font-size:1.4rem;line-height:1.1}.speaking-analysis-entry-copy small{color:var(--muted);font-size:.95rem}.speaking-analysis-entry-chevron{color:var(--muted);font-size:2rem;line-height:1}.speaking-analysis-modal-backdrop{z-index:80;-webkit-backdrop-filter:none;backdrop-filter:none;background:#1f293338;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.speaking-analysis-modal{background:#fffffff7;border:1px solid #e8eaedd6;border-radius:28px;gap:18px;width:min(960px,100%);max-height:min(88vh,920px);padding:22px;display:grid;overflow:auto;box-shadow:0 28px 60px #1f29332e}.speaking-analysis-modal-head{justify-content:space-between;align-items:center;gap:16px;display:flex}.speaking-analysis-modal-head h3{margin:0;font-size:1.8rem}.speaking-analysis-audio{background:#f8f9fad1;border:1px solid #e8eaedc2;border-radius:24px;grid-template-columns:64px minmax(0,1fr);gap:14px;padding:18px;display:grid}.speaking-analysis-play{appearance:none;background:var(--mode-grammar-strong);color:#fff;width:64px;height:64px;font:inherit;cursor:pointer;border:0;border-radius:999px;font-size:1.35rem}.speaking-analysis-audio-track{align-content:center;gap:10px;display:grid}.speaking-analysis-audio-track strong{font-size:1.15rem}.speaking-analysis-audio-track input[type=range]{width:100%}.speaking-analysis-audio-track span{color:var(--muted);font-variant-numeric:tabular-nums}.speaking-analysis-window-head{justify-content:space-between;align-items:center;gap:12px;display:flex}.speaking-analysis-window-head span{color:var(--muted);font-size:.9rem;font-weight:700}.speaking-analysis-window-head em{background:var(--mode-grammar-soft);color:var(--mode-grammar-strong);border-radius:999px;padding:6px 10px;font-size:.92rem;font-style:normal;font-weight:700}.speaking-analysis-chart-wrap{background:#f5f5f7;border:1px solid #e8eaedc2;border-radius:24px;overflow:hidden}.speaking-analysis-chart{width:100%;height:320px;display:block}.speaking-analysis-current-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.speaking-waveform{background:#f5f5f7;border:1px solid #e8eaedbd;border-radius:22px;align-items:center;gap:3px;min-height:160px;padding:20px;display:flex;overflow:hidden}.speaking-waveform span{background:#2faf589e;border-radius:999px;flex:1;min-width:2px}.speaking-waveform em,.speaking-chart-empty{width:100%;color:var(--muted);text-align:center;font-style:normal}.speaking-chart-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.speaking-line-chart,.speaking-chart-empty{background:#f5f5f7;border:1px solid #e8eaedbd;border-radius:22px;width:100%;height:220px}.speaking-chart-empty{place-items:center;display:grid}.speaking-stat-grid,.speaking-metric-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.speaking-stat-grid{margin-top:14px}.speaking-clarity{gap:20px;display:grid}.speaking-clarity p{color:var(--ink);margin:8px 0 0;line-height:1.7}.speaking-advice-list{gap:12px;margin-top:10px;display:grid}.speaking-advice-list article{background:#f8f9fa9e;border:1px solid #e8eaedc7;border-radius:18px;gap:7px;padding:16px;display:grid}.speaking-advice-list small{color:var(--muted);line-height:1.5}.speaking-advice-list strong{color:var(--ink);font-size:1rem;line-height:1.5}.speaking-advice-list p{color:var(--muted);margin:0}.speaking-clarity+.speaking-secondary-button,.speaking-report-panel>.speaking-secondary-button{margin-top:18px}.speaking-history-list{gap:14px;display:grid}.speaking-history-card{background:#ffffffdb;border:1px solid #e8eaedc7;border-radius:22px;gap:10px;padding:18px;display:grid}.speaking-history-card span{color:var(--mode-grammar-strong);font-size:.82rem;font-weight:700}.speaking-history-card strong{color:var(--ink);font-size:1.25rem}.speaking-history-card p{color:var(--muted);overflow-wrap:anywhere;margin:0;line-height:1.55}.speaking-history-card div{flex-wrap:wrap;gap:10px;display:flex}.speaking-history-card .speaking-danger-button{color:var(--danger);background:var(--danger-soft);border-color:#c53b5029}.speaking-empty-report{text-align:center;place-content:center;gap:8px;min-height:220px;display:grid}.chat-page-shell{flex-direction:column;height:100vh;min-height:0;display:flex;overflow:hidden}.chat-page-topbar{z-index:20;border-bottom:1px solid var(--line);-webkit-backdrop-filter:none;backdrop-filter:none;background:#fff;align-items:center;gap:12px;padding:14px 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b{font-size:.9rem}.memento-report-card p span{color:#475569;overflow-wrap:anywhere}@media (max-width:760px){.memento-panel{border-radius:18px;padding:16px}.memento-head{flex-direction:column}.memento-tabs,.memento-actions{width:100%}.memento-tab,.memento-report-button,.memento-regenerate-button{flex:1}.memento-row{grid-template-columns:1fr;gap:8px}.memento-row b{justify-self:start}.memento-report-panel{border-radius:26px 26px 22px 22px;max-height:92vh}.memento-history-panel{border-radius:26px 26px 22px 22px;max-height:94vh}.memento-report-panel .chat-overlay-header,.memento-history-panel .chat-overlay-header{align-items:stretch}.memento-report-panel .memento-regenerate-button{width:100%}.memento-history-panel .memento-regenerate-button,.memento-round-select{width:100%;max-width:none}.memento-trend-row{grid-template-columns:1fr}.memento-trend-strip{grid-auto-columns:minmax(30px,1fr);overflow-x:auto}.memento-entry-card{grid-template-columns:auto minmax(0,1fr)}.memento-entry-card b{text-align:center;grid-column:1/-1;justify-self:stretch}}.mistakes-list{flex-direction:column;gap:14px;display:flex}.mistake-row{background:#fffffff2;border:1px solid #e8eaedc7;border-radius:26px;justify-content:space-between;align-items:center;gap:18px;padding:24px 26px;display:flex;box-shadow:0 16px 42px #1f29330b}.mistake-row-button{appearance:none;width:100%;color:var(--ink);cursor:pointer;font:inherit;text-align:left;transition:border-color .15s,box-shadow .15s,transform .15s}.mistake-row-button:hover{border-color:var(--mode-accent-stroke);transform:translateY(-1px);box-shadow:0 20px 48px #1f293312}.mistake-info{flex-direction:column;gap:2px;display:flex}.mistake-word{letter-spacing:-.03em;font-size:1.32rem;font-weight:800;line-height:1.12}.mistake-sub{color:var(--muted);font-size:.92rem}.mistake-badge{border:1px solid var(--mode-accent-stroke);background:var(--mode-accent-soft);min-width:48px;height:48px;color:var(--mode-accent-strong);text-align:center;border-radius:99px;justify-content:center;align-items:center;font-size:1rem;font-weight:800;display:inline-flex}.mistake-picker-panel{border-radius:34px 34px 28px 28px;flex-direction:column;gap:18px;width:min(720px,100%);max-height:min(82vh,820px);padding-top:14px;display:flex}.mistake-picker-grabber{background:#1f293338;border-radius:999px;width:72px;height:6px;margin:0 auto 4px}.mistake-picker-header{align-items:center}.mistake-picker-header .chat-overlay-close{width:auto;min-width:86px;height:44px;color:var(--mode-accent-strong);background:var(--mode-accent-soft);border-radius:999px;padding:0 18px}.mistake-history-button{appearance:none;background:var(--mode-accent-soft);min-width:96px;min-height:44px;color:var(--mode-accent-strong);cursor:pointer;font:inherit;border:none;border-radius:999px;padding:0 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auto;align-items:center;gap:14px;padding:16px 18px;display:grid}.mistake-picker-row-selected{border-color:var(--mode-accent-stroke);background:var(--mode-accent-soft)}.mistake-picker-check{color:#fff;border:2px solid #6b728080;border-radius:999px;justify-content:center;align-items:center;width:28px;height:28px;font-weight:900;display:inline-flex}.mistake-picker-row-selected .mistake-picker-check{border-color:var(--mode-accent-strong);background:var(--mode-accent-strong)}.mistake-picker-row-copy{gap:4px;display:grid}.mistake-picker-row-copy strong{font-size:1.08rem;line-height:1.15}.mistake-picker-row-copy em{color:var(--muted);font-size:.92rem;font-style:normal}.mistake-picker-count{color:var(--mode-accent-strong);white-space:nowrap;font-weight:900}.mistake-picker-start{border-radius:999px;width:100%;min-height:54px}.mistakes-page 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#e8eaede0;border-radius:20px;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;padding:0 18px;display:grid}.mistake-history-filter-trigger>span{border:2px solid var(--ink);border-radius:999px;place-items:center;width:28px;height:28px;font-size:.78rem;line-height:1;display:grid}.mistake-history-filter-trigger strong{font-size:1.05rem}.mistake-history-filter-trigger em{color:var(--ink);font-size:1.1rem;font-style:normal;font-weight:900}.mistake-history-filter-menu{background:#fffffffa;border:1px solid #e8eaede0;border-radius:22px;max-height:min(52vh,380px);position:absolute;top:calc(100% + 8px);left:0;right:0;overflow:auto;box-shadow:0 24px 60px #1f293329}.mistake-history-filter-option{appearance:none;width:100%;color:var(--ink);cursor:pointer;font:inherit;text-align:left;background:0 0;border:0;border-bottom:1px solid #e8eaedb8;grid-template-columns:32px 1fr;align-items:center;gap:12px;padding:14px 18px;display:grid}.mistake-history-filter-option:last-child{border-bottom:0}.mistake-history-filter-option.selected{background:var(--mode-accent-soft)}.mistake-history-filter-option>span{color:#fff;border:2px solid #6b72806b;border-radius:999px;place-items:center;width:28px;height:28px;font-weight:900;display:grid}.mistake-history-filter-option.selected>span{border-color:var(--mode-accent-strong);background:var(--mode-accent-strong)}.mistake-history-filter-option strong,.mistake-history-filter-option em{grid-column:2}.mistake-history-filter-option em{color:var(--muted);font-size:.88rem;font-style:normal;font-weight:700}.mistake-history-sections{gap:18px;min-height:0;padding-right:2px;display:grid;overflow:auto}.mistake-history-section{gap:12px;display:grid}.mistake-history-section-head{gap:4px;display:grid}.mistake-history-section-head strong{font-size:1.2rem;line-height:1.2}.mistake-history-section-head span{color:var(--muted);font-weight:700}.mistake-history-list{gap:10px;display:grid}.mistake-history-row{appearance:none;width:100%;color:var(--ink);cursor:pointer;font:inherit;text-align:left;background:#fffffff0;border:1px solid #e8eaedd1;border-radius:20px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:14px;padding:16px 18px;display:grid}.mistake-history-row>span{gap:4px;min-width:0;display:grid}.mistake-history-row strong{overflow-wrap:anywhere;font-size:1.06rem;line-height:1.18}.mistake-history-row em{color:var(--muted);font-size:.9rem;font-style:normal}.mistake-history-row b{color:var(--mode-accent-strong);white-space:nowrap}.mistake-detail-overlay{z-index:60}.mistake-detail-panel{width:min(780px,100%)}.mistake-detail-panel .grammar-detail-scope{background:0 0;border:0;border-radius:0;justify-content:space-between;align-items:center;gap:12px;padding:0;display:flex}.mistake-detail-panel .mistake-detail-progress-chip,.mistake-detail-panel .grammar-detail-source-chip,.mistake-detail-panel .mistake-detail-scope-action-button{color:#0f172a;min-height:34px;box-shadow:none;white-space:nowrap;background:#f3f4f6;border:0;border-radius:999px;justify-content:center;align-items:center;padding:9px 12px;font-size:.9rem;font-weight:800;line-height:1;display:inline-flex}.mistake-detail-panel .mistake-detail-scope-action-button{cursor:pointer;box-shadow:0 6px 14px #0f172a14}.mistake-detail-panel .mistake-detail-source-chip-button{cursor:pointer;appearance:none;gap:5px;box-shadow:0 6px 14px #0f172a14}.mistake-detail-panel .mistake-detail-scope-action-button:hover,.mistake-detail-panel .mistake-detail-source-chip-button:hover{background:#e5e7eb}.mistake-detail-source-overlay{z-index:70}.mistake-detail-panel .grammar-detail-meta{align-items:center}.mistake-detail-panel .grammar-detail-explanation{box-shadow:none;background:#fff;border:0}.bank-badge{border:1px solid 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.15s}.auth-tab.active{color:var(--accent-strong);border-bottom-color:var(--accent)}.auth-form{flex-direction:column;gap:14px;display:flex}.auth-form .button{margin-top:8px}.checkbox-row{cursor:pointer;align-items:center;gap:8px;font-size:.9rem;display:flex}.error-text{color:var(--danger);text-align:center;font-size:.85rem}.profile-info{flex-direction:column;gap:8px;display:flex}.profile-row{border-bottom:1px solid var(--line);justify-content:space-between;align-items:baseline;gap:16px;padding:8px 0;display:flex}.profile-label{color:var(--muted);flex:none;font-size:.9rem}.profile-row>span:last-child{text-align:right;overflow-wrap:anywhere;min-width:0}.bank-page{max-width:720px;margin:0 auto;padding:32px 24px}.bank-page h1{margin:0 0 8px}.bank-page[data-mode=exam] .exam-detail h3{color:var(--mode-exam-strong)}.bank-list{flex-direction:column;gap:6px;display:flex}.bank-row{border:1px solid var(--line);background:var(--panel);border-radius:12px;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.bank-row-clickable{cursor:pointer;text-align:left;width:100%;font:inherit;transition:box-shadow .15s}.bank-row-clickable:hover{box-shadow:var(--shadow)}.bank-info{flex-direction:column;gap:2px;min-width:0;display:flex}.bank-word{font-weight:600}.bank-meta{color:var(--muted);font-size:.85rem}.exam-search-bar{gap:8px;margin-bottom:20px;display:flex}.exam-source-select{border:1px solid var(--line);background:var(--field);font:inherit;border-radius:14px;padding:8px 12px}.exam-search-input{border:1px solid var(--line);font:inherit;border-radius:14px;flex:1;padding:8px 12px}.exam-detail{border:1px solid var(--line);background:var(--panel-strong);border-radius:12px;margin-top:20px;padding:20px}.exam-detail h3{margin:0 0 12px}.exam-passage{color:var(--muted);font-size:.9rem;line-height:1.6}.exam-bank-page{width:min(1040px,100vw - 32px);margin:0 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h2{font-size:1.35rem}.exam-bank-search-copy p,.exam-bank-search-footer,.exam-bank-results-heading,.exam-bank-detail-meta{color:var(--muted);font-size:.9rem}.exam-bank-textarea{resize:vertical;border:1px solid var(--line);background:var(--field);width:100%;min-height:116px;color:var(--ink);font:inherit;border-radius:16px;padding:14px 16px;line-height:1.5}.exam-bank-search-footer,.exam-bank-results-heading,.exam-bank-detail-meta{flex-wrap:wrap;justify-content:space-between;gap:10px;display:flex}.exam-bank-link-button{color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:0;font-size:.9rem;font-weight:800}.exam-bank-link-button:disabled{cursor:not-allowed;opacity:.45}.exam-bank-submit{min-height:48px}.exam-bank-empty{text-align:center;padding:42px 24px}.exam-bank-empty p{color:var(--muted);margin-top:8px}.exam-bank-terms{gap:18px;display:grid}.exam-bank-term-card{gap:18px;padding:22px;display:grid}.exam-bank-term-heading,.exam-bank-vocab-heading,.exam-bank-modal-header{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.exam-bank-term-heading h2{letter-spacing:-.03em;font-size:1.6rem}.exam-bank-vocab{border:1px solid 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auto;gap:12px;padding:14px;display:grid}.exam-bank-result-row:hover{border-color:var(--mode-exam-stroke);box-shadow:var(--shadow)}.exam-bank-result-index{background:var(--mode-exam-soft);min-height:28px;color:var(--mode-exam-strong);border-radius:999px;align-items:center;padding:0 10px;font-size:.8rem;font-weight:900;display:inline-flex}.exam-bank-result-copy{gap:8px;min-width:0;display:grid}.exam-bank-result-copy strong{color:var(--ink)}.exam-bank-result-matches{color:var(--muted);font-size:.78rem;font-weight:800}.exam-bank-snippet{background:var(--field);color:var(--muted);border-radius:12px;padding:10px 12px;font-size:.88rem;line-height:1.5}.exam-bank-result-action{color:var(--mode-exam-strong);white-space:nowrap;align-self:start;font-size:.84rem;font-weight:900}.exam-bank-load-more{justify-self:start}.exam-bank-modal-backdrop{z-index:80;background:#1d1d1f52;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.exam-bank-modal{border:1px solid var(--line);background:var(--panel);width:min(900px,100vw - 40px);max-height:min(760px,100vh - 40px);box-shadow:var(--shadow);border-radius:24px;padding:24px;overflow:auto}.exam-bank-modal-header{margin-bottom:18px}.exam-bank-modal-header h2{margin:0;font-size:clamp(1.35rem,3vw,2rem)}.exam-bank-passage{border:1px solid var(--line);background:var(--panel-strong);border-radius:18px;gap:14px;padding:18px;display:grid}.exam-bank-passage p{color:var(--ink);margin:0;line-height:1.72}.exam-bank-page mark,.exam-bank-modal mark{background:var(--mode-exam-soft);color:var(--ink);border-radius:4px;padding:0 2px}@media (max-width:760px){.exam-bank-vocab-grid,.exam-bank-result-row{grid-template-columns:1fr}.exam-bank-result-action{white-space:normal}.exam-bank-term-heading,.exam-bank-vocab-heading,.exam-bank-modal-header{flex-direction:column}}.sidebar-footer{border-top:1px solid 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