:root{--bg:#fbfdfb;--panel:#ffffff;--panel-strong:#ffffff;--surface-subtle:#f4f7f5;--surface-muted:#f1f5f2;--field:#ffffff;--overlay:#ffffff;--selected-fill:#e9f8ee;--selected-stroke:#c8efd4;--ink:#17211b;--text:#17211b;--muted:#65716a;--line:#e4ebe6;--line-strong:#ccd8d0;--accent:#34d66b;--accent-strong:#118b3e;--accent-soft:#e9f8ee;--accent-stroke:#c8efd4;--accent-tint:rgba(52,214,107,0.1);--accent-tint-strong:rgba(52,214,107,0.18);--mode-vocabulary:#34d66b;--mode-vocabulary-strong:#118b3e;--mode-vocabulary-soft:#e9f8ee;--mode-vocabulary-stroke:#c8efd4;--mode-grammar:#34c759;--mode-grammar-strong:#248a3d;--mode-grammar-soft:rgba(52,199,89,0.1);--mode-grammar-stroke:rgba(52,199,89,0.18);--mode-exam:#34c759;--mode-exam-strong:#248a3d;--mode-exam-soft:rgba(52,199,89,0.1);--mode-exam-stroke:rgba(52,199,89,0.18);--warning:#ff9500;--warning-strong:#8a5a08;--warning-soft:rgba(255,149,0,0.1);--warm:var(--warning);--success:#118b3e;--danger:#ff3b30;--danger-soft:rgba(255,59,48,0.1);--scrim:rgba(16,29,22,0.32);--shadow:0 10px 24px rgba(18,38,26,0.07);--card-shadow:0 10px 24px rgba(18,38,26,0.07);--hero-shadow:0 14px 34px rgba(18,38,26,0.08);--control-shadow:0 6px 16px rgba(18,38,26,0.055);--radius:20px;--radius-lg:28px;--radius-md:18px;--radius-sm:12px;--sidebar-w:248px;--page-background:#f5f5f7;--color-scheme:light;--placeholder:rgba(101,113,106,0.62);--on-accent:#ffffff;--chart-waveform:rgba(52,199,89,0.72);--chart-pitch:#248a3d;--chart-intensity:#34c759;--chart-duration:#6e6e73}:root[data-theme=dark]{--bg:#111411;--panel:#1a1f1b;--panel-strong:#202620;--surface-subtle:#232a24;--surface-muted:#1e251f;--field:#151a16;--overlay:#1a1f1b;--selected-fill:rgba(52,214,107,0.14);--selected-stroke:rgba(52,214,107,0.26);--ink:#f3f7f4;--text:#f3f7f4;--muted:#9aa69f;--line:#2e3931;--line-strong:#3c4a40;--accent:#39df73;--accent-strong:#71ee9a;--accent-soft:rgba(52,214,107,0.14);--accent-stroke:rgba(52,214,107,0.26);--mode-vocabulary-soft:rgba(52,214,107,0.14);--mode-vocabulary-stroke:rgba(52,214,107,0.26);--mode-grammar:#34c759;--mode-grammar-strong:#71ee9a;--mode-grammar-soft:rgba(52,199,89,0.16);--mode-grammar-stroke:rgba(52,199,89,0.28);--mode-exam:#34c759;--mode-exam-strong:#71ee9a;--mode-exam-soft:rgba(52,199,89,0.16);--mode-exam-stroke:rgba(52,199,89,0.28);--danger-soft:rgba(255,59,48,0.14);--warning-strong:#f3c56e;--warning-soft:rgba(217,149,30,0.14);--scrim:rgba(0,0,0,0.56);--shadow:0 12px 28px rgba(0,0,0,0.22);--card-shadow:0 12px 28px rgba(0,0,0,0.2);--hero-shadow:0 16px 34px rgba(0,0,0,0.22);--control-shadow:0 8px 18px rgba(0,0,0,0.18);--page-background:#111411;--color-scheme:dark;--placeholder:rgba(154,166,159,0.64);--on-accent:#06120b;--chart-waveform:rgba(113,238,154,0.72);--chart-pitch:#71ee9a;--chart-intensity:#34c759;--chart-duration:#a1a1a6}.bank-page,.chat-page-shell,.home-continue-card,.mistakes-page,.mode-card{--mode-accent:var(--accent);--mode-accent-strong:var(--accent-strong);--mode-accent-soft:var(--accent-soft);--mode-accent-stroke:var(--accent-stroke)}.bank-page[data-mode=vocabulary],.chat-page-shell[data-mode=quick_learn],.home-continue-card[data-mode=quick_learn],.mistakes-page[data-mode=vocabulary],.mode-card[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)}.bank-page[data-mode=grammar],.chat-page-shell[data-mode=grammar],.home-continue-card[data-mode=grammar],.mistakes-page[data-mode=grammar],.mode-card[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)}.bank-page[data-mode=exam],.chat-page-shell[data-mode=exam_drill],.home-continue-card[data-mode=exam_drill],.mistakes-page[data-mode=exam],.mode-card[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{display:inline-flex;align-items:center;min-width:0;gap:8px;line-height:1}.brand-logo>span:last-child{min-width:0}.brand-mark-image{display:block;flex:0 0 auto;border-radius:22%;object-fit:cover;box-shadow:0 4px 12px rgba(18,38,26,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;color:var(--ink);background:var(--page-background);font-family:Circular,Circular Std,Inter,-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,sans-serif;font-weight:400;color-scheme:var(--color-scheme)}a{color:inherit;text-decoration:none}.app-layout{display:flex;min-height:100vh}.app-main{flex:1 1;min-width:0}.app-main,.sidebar{display:flex;flex-direction:column}.sidebar{width:var(--sidebar-w);flex-shrink:0;padding:24px 16px;background:#ffffff;border-right:1px solid var(--line);position:-webkit-sticky;position:sticky;top:0;height:100vh;overflow-y:auto}.sidebar-brand{display:flex;flex-direction:column;gap:2px;padding:0 8px}.sidebar-logo{font-size:1.25rem;font-weight:700;letter-spacing:.03em;color:var(--accent-strong)}.sidebar-tagline{font-size:.78rem;color:var(--muted)}.sidebar-nav{display:flex;flex-direction:column;gap:4px}.sidebar-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;font-size:.92rem;transition:background .15s,color .15s}.sidebar-link-active,.sidebar-link:hover{background:var(--selected-fill)}.sidebar-link-active{color:var(--accent-strong);font-weight:700}.sidebar-icon{font-size:1.1rem;width:24px;text-align:center}.sidebar.sidebar-chat-collapsed{width:56px;padding:14px 8px;align-items:center;background:var(--panel)}.sidebar-chat-drawer-button{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:40px;height:40px;display:inline-grid;place-items:center;border-radius:999px;background:var(--surface-subtle);cursor:pointer}.sidebar-chat-drawer-button:focus-visible,.sidebar-chat-drawer-button:hover{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;padding:36px 32px 44px;max-width:940px}.home-hero{margin-bottom:32px}.home-hero-refined{position:relative;padding:28px 30px;border-radius:30px;background:radial-gradient(circle at top right,rgba(255,255,255,.92),transparent 40%),linear-gradient(180deg,rgba(255,255,255,.98),rgba(248,249,250,.94));box-shadow:var(--shadow)}.home-hero-copy{display:grid;grid-gap:10px;gap:10px;max-width:34rem}.home-hero-kicker{font-size:.82rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--mode-vocabulary-strong)}.home-hero h1{margin:0 0 8px;font-size:clamp(1.8rem,4vw,2.6rem);line-height:1.05;color:var(--ink)}.home-hero p{margin:0;color:var(--muted);line-height:1.6;max-width:40ch}.home-section{margin-bottom:28px}.home-section-soft{padding-top:8px}.home-section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:14px}.home-section h2{margin:0;font-size:1.15rem}.home-section-heading p{margin:0;color:var(--muted);font-size:.88rem}.home-continue-card{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 22px;border-radius:26px;background:linear-gradient(180deg,rgba(255,255,255,.98),rgba(248,249,250,.95));box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease}.home-continue-card:hover{transform:translateY(-2px);box-shadow:0 22px 48px rgba(31,41,51,.08)}.home-continue-copy{display:grid;grid-gap:4px;gap:4px;min-width:0}.home-continue-label{font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--mode-accent-strong)}.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{display:grid;grid-gap:4px;gap:4px;justify-items:end;text-align:right;white-space:nowrap}.home-continue-stats span:first-child{font-size:1.3rem;font-weight:700;color:var(--mode-accent-strong)}.home-continue-stats span:last-child{font-size:.88rem;color:var(--muted)}.home-modes{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));grid-gap:14px;gap:14px}.mode-card{display:flex;flex-direction:column;align-items:center;gap:8px;padding:20px 16px;border:1px solid rgba(232,234,237,.74);border-radius:22px;background:rgba(255,255,255,.76);text-align:center;transition:box-shadow .2s,transform .15s,border-color .15s}.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{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:16px;font-size:1.5rem;color:var(--ink);background:rgba(248,249,250,.9);border:1px solid rgba(232,234,237,.64)}.mode-card[data-mode] .mode-icon{background:var(--mode-accent-soft);border-color:var(--mode-accent-stroke)}.mode-card[data-mode] 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span{color:var(--mode-grammar-strong);font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.speaking-empty-report h2,.speaking-history-head h2,.speaking-summary-copy h2,.speaking-topbar h1{margin:4px 0;color:var(--ink);font-size:clamp(1.8rem,4vw,2.5rem);line-height:1.05}.speaking-empty-report p,.speaking-history-head p,.speaking-panel-head p,.speaking-topbar p{margin:0;color:var(--muted);line-height:1.55}.speaking-history-card button,.speaking-history-entry,.speaking-primary-button,.speaking-secondary-button,.speaking-upload-button{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--line);border-radius:999px;background:var(--panel-strong);color:var(--ink);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;font:inherit;font-weight:700;white-space:nowrap;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.speaking-history-card button:hover,.speaking-history-entry:hover,.speaking-primary-button:hover,.speaking-secondary-button:hover,.speaking-upload-button:hover{transform:translateY(-1px);box-shadow:var(--shadow)}.speaking-history-entry{color:var(--mode-grammar-strong);background:var(--mode-grammar-soft);border-color:var(--mode-grammar-stroke)}.speaking-primary-button{color:#ffffff;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-empty-report,.speaking-history-page,.speaking-recorder-card,.speaking-report-panel,.speaking-summary-card{border:1px solid 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14px;background:var(--panel-strong);color:var(--ink);font:inherit}.speaking-recorder-actions{display:flex;flex-wrap:wrap;gap:10px}.speaking-file-name{margin:0;color:var(--muted);overflow-wrap:anywhere}.speaking-audio{width:100%;max-width:760px}.speaking-error{margin:0;color:var(--danger);font-weight:700}.speaking-report,.speaking-summary-card{display:grid;grid-gap:22px;gap:22px}.speaking-summary-card{padding:28px}.speaking-score-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:12px;gap:12px}.speaking-clarity-score,.speaking-metric,.speaking-score-row div,.speaking-stat{display:grid;grid-gap:5px;gap:5px;padding:16px;border:1px solid rgba(232,234,237,.74);border-radius:18px;background:rgba(248,249,250,.78)}.speaking-clarity-score span,.speaking-label,.speaking-metric span,.speaking-score-row span,.speaking-stat span{color:var(--muted);font-size:.82rem;font-weight:700}.speaking-clarity-score strong,.speaking-metric strong,.speaking-score-row strong,.speaking-stat 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{display:flex;flex-wrap:wrap;gap:10px}.speaking-meta-row span{padding:8px 12px;border-radius:999px;background:var(--surface-subtle);color:var(--muted);font-size:.9rem;font-weight:700}.speaking-report-panel{padding:24px}.speaking-history-head,.speaking-panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px}.speaking-panel-head h3,.speaking-section-title h2{margin:0;color:var(--ink);font-size:1.35rem}.speaking-panel-head>span{padding:8px 12px;border-radius:999px;background:var(--mode-grammar-soft);color:var(--mode-grammar-strong);font-size:.84rem;font-weight:700}.speaking-transcript{margin:0;color:var(--ink);font-size:1.2rem;line-height:1.65}.speaking-word-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.speaking-word-list span{padding:7px 10px;border-radius:999px;background:var(--surface-subtle);color:var(--ink);font-size:.9rem}.speaking-section-title{display:grid;grid-gap:6px;gap:6px;padding:8px 4px 0}.speaking-section-title p{margin:0;color:var(--muted)}.speaking-analysis-list{display:grid;grid-gap:12px;gap:12px}.speaking-analysis-entry{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;display:flex;align-items:center;gap:14px;padding:16px;border:1px solid rgba(232,234,237,.78);border-radius:22px;background:rgba(255,255,255,.92);box-shadow:var(--shadow);cursor:pointer;text-align:left;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.speaking-analysis-entry:hover{transform:translateY(-1px)}.speaking-analysis-entry-icon{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;font-size:1.5rem;font-weight:700}.speaking-analysis-entry.is-duration .speaking-analysis-entry-icon,.speaking-analysis-entry.is-intensity .speaking-analysis-entry-icon,.speaking-analysis-entry.is-pitch .speaking-analysis-entry-icon,.speaking-analysis-entry.is-waveform .speaking-analysis-entry-icon{background:rgba(52,199,89,.1);color:#248a3d}.speaking-analysis-entry-copy{min-width:0;display:grid;grid-gap:4px;gap:4px;flex:1 1}.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{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:24px;background:rgba(31,41,51,.22);-webkit-backdrop-filter:none;backdrop-filter:none}.speaking-analysis-modal{width:min(960px,100%);max-height:min(88vh,920px);overflow:auto;padding:22px;border:1px solid rgba(232,234,237,.84);border-radius:28px;background:rgba(255,255,255,.97);box-shadow:0 28px 60px rgba(31,41,51,.18);display:grid;grid-gap:18px;gap:18px}.speaking-analysis-modal-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.speaking-analysis-modal-head h3{margin:0;font-size:1.8rem}.speaking-analysis-audio{display:grid;grid-template-columns:64px minmax(0,1fr);grid-gap:14px;gap:14px;padding:18px;border:1px solid rgba(232,234,237,.76);border-radius:24px;background:rgba(248,249,250,.82)}.speaking-analysis-play{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:64px;height:64px;border:0;border-radius:999px;background:var(--mode-grammar-strong);color:#fff;font:inherit;font-size:1.35rem;cursor:pointer}.speaking-analysis-audio-track{display:grid;grid-gap:10px;gap:10px;align-content:center}.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-feature-settings:"tnum";font-variant-numeric:tabular-nums}.speaking-analysis-window-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.speaking-analysis-window-head span{color:var(--muted);font-size:.9rem;font-weight:700}.speaking-analysis-window-head em{font-style:normal;padding:6px 10px;border-radius:999px;background:var(--mode-grammar-soft);color:var(--mode-grammar-strong);font-size:.92rem;font-weight:700}.speaking-analysis-chart-wrap{border:1px solid rgba(232,234,237,.76);border-radius:24px;background:#f5f5f7;background-image:none;overflow:hidden}.speaking-analysis-chart{width:100%;height:320px;display:block}.speaking-analysis-current-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:12px;gap:12px}.speaking-waveform{min-height:160px;display:flex;align-items:center;gap:3px;padding:20px;border:1px solid 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minmax(320px,1.05fr);grid-gap:18px;gap:18px}.admin-memberships-form,.admin-memberships-search{display:grid;grid-gap:14px;gap:14px}.admin-home-grid{display:grid;grid-template-columns:repeat(2,minmax(240px,1fr));grid-gap:18px;gap:18px}.admin-home-card{display:grid;grid-gap:10px;gap:10px;color:var(--text);text-decoration:none}.admin-home-card-icon{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;background:var(--accent-soft);color:var(--accent-strong)}.admin-home-card strong{color:var(--ink);font-size:1.12rem}.admin-home-card em{color:var(--muted);font-style:normal}.admin-home-card-action{display:inline-flex;align-items:center;gap:6px;color:var(--accent-strong);font-weight:800}.admin-memberships-form label,.admin-memberships-search label,.admin-video-page label{display:grid;grid-gap:7px;gap:7px;font-weight:700}.admin-memberships-form input,.admin-memberships-form select,.admin-memberships-form textarea,.admin-search-row 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minmax(0,1fr);grid-gap:16px;gap:16px}.admin-video-media{display:grid;place-items:center;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:18px;background:var(--surface-subtle);color:var(--muted);font-weight:800}.admin-video-media img{width:100%;height:100%;object-fit:cover;display:block}.admin-book-media{aspect-ratio:3/4}.admin-video-card-main{display:grid;grid-gap:12px;gap:12px;min-width:0}.admin-video-card-head{display:grid;grid-gap:10px;gap:10px}.admin-video-card-head small,.admin-video-card-head strong{display:block}.admin-video-card-head small{margin-top:4px;color:var(--muted);overflow-wrap:anywhere}.admin-video-actions,.admin-video-badges{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.admin-video-badges span{border-radius:999px;background:var(--surface-subtle);color:var(--muted);padding:5px 9px;font-size:.82rem;font-weight:800}.admin-video-badges span[data-status=ready]{color:var(--success)}.admin-video-badges span[data-status=failed]{color:var(--danger)}.admin-video-badges span[data-status=processing]{color:var(--accent-strong)}.admin-memberships-actions,.admin-memberships-row,.admin-result-summary,.admin-search-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.admin-memberships-row>label{flex:1 1 180px}.admin-search-row input{flex:1 1 220px}.admin-result-table,.admin-user-table{display:grid;grid-gap:8px;gap:8px}.admin-result-row,.admin-user-row{border:1px solid var(--line);border-radius:18px;background:var(--panel-strong)}.admin-user-row{display:flex;justify-content:space-between;gap:12px;padding:12px;color:var(--text);text-align:left}.admin-user-row span:first-child{display:grid;grid-gap:4px;gap:4px}.admin-user-row small{color:var(--muted)}.admin-result-summary{margin-bottom:12px}.admin-result-summary span{color:var(--muted)}.admin-result-row{display:grid;grid-template-columns:minmax(160px,1fr) 110px minmax(130px,.8fr) 130px minmax(120px,1fr);grid-gap:10px;gap:10px;align-items:center;padding:10px 12px;overflow-wrap:anywhere}.admin-result-row strong[data-status=granted],.admin-result-row strong[data-status=revoked]{color:var(--success)}.admin-result-row strong[data-status=error],.admin-result-row strong[data-status=not_found]{color:var(--danger)}@media (max-width:920px){.admin-home-grid,.admin-memberships-grid,.admin-result-row,.admin-video-card,.admin-video-edit-grid,.admin-video-form-grid,.pro-paywall-body,.pro-paywall-title-row,.pro-plan-grid{grid-template-columns:1fr}}