:root{--bg: #f4f6fa;--surface: #ffffff;--surface-soft: #f9fafc;--border: #e2e8f0;--border-strong: #cbd5e1;--text: #1f2937;--text-soft: #475569;--muted: #94a3b8;--accent: #2563eb;--accent-soft: #eff6ff;--ok: #059669;--ok-soft: #ecfdf5;--warn: #b45309;--warn-soft: #fffbeb;--danger: #dc2626;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);--shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 10px 28px rgba(15, 23, 42, .06);--radius: 12px}*{box-sizing:border-box}html,body,#root{height:100%}@supports (height: 100dvh){html,body,#root{height:100dvh}}body{margin:0;min-width:320px;overflow-x:hidden;background:var(--bg);color:var(--text);-webkit-text-size-adjust:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans CJK SC,sans-serif;font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}code,kbd,.code-sample{font-family:SFMono-Regular,Consolas,Liberation 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reduce){.word-card.is-vanishing,.vanish-ring,.vanish-spark,.vanish-label,.undo-toast,.speech-toast{animation-duration:.18s}}.speech-toast{position:fixed;left:50%;bottom:72px;z-index:40;display:flex;align-items:center;gap:10px;max-width:min(560px,calc(100vw - 24px));padding:9px 14px;border:1px solid #fecaca;border-radius:10px;background:#fff7f7;color:#991b1b;font-size:12px;box-shadow:0 8px 24px #0f172a29;transform:translate(-50%);animation:toast-in .22s ease-out forwards}.speech-toast .link-btn{color:#b91c1c;white-space:nowrap}.select--voice{max-width:250px}@media (max-width: 1180px){.topbar-row{gap:14px;padding:10px 16px}.topbar-row--stats{padding:0 16px 10px}.layout-bar{padding:0 16px;gap:12px}.stream-row{padding:8px 16px}.active-indicator{right:16px}.filters{gap:10px}.select{min-width:116px}.topbar-hint{font-size:11px}}@media (max-width: 900px){.topbar-row{flex-wrap:wrap;gap:10px 14px}.brand{flex:1 1 auto}.brand-text small{display:none}.brand-mark{width:38px;height:38px;font-size:13px}.topbar-actions{order:2}.filters{order:3;flex:1 1 100%;flex-wrap:wrap}.field{flex:1 1 160px}.field--search{flex:1 1 100%;max-width:none}.topbar-hint{display:none}.topbar-row--stats{padding-top:2px}.stats-bar{flex-wrap:wrap;gap:8px 14px}.layout-bar{height:auto;min-height:42px;flex-wrap:wrap;padding:6px 16px;gap:8px 14px}.layout-spacer{display:none}.layout-info{margin-left:auto}.stream-row{padding:8px 12px}.active-indicator{right:12px;bottom:12px;font-size:11px}.panel-drawer{width:min(440px,100vw)}.word-card.is-flipped{max-height:min(340px,62vh)}}@media (max-width: 640px){body{font-size:13px}.topbar{padding-top:env(safe-area-inset-top)}.topbar-row{padding:8px 12px;gap:8px 10px}.brand-text strong{font-size:14px}.brand-mark{width:34px;height:34px;border-radius:9px}.topbar-actions{width:100%;order:2}.topbar-actions .btn{flex:1 1 0;min-width:0;padding:0 6px;font-size:12px;min-height:38px}.filters{order:3;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;width:100%}.field{min-width:0}.field--search{grid-column:1 / -1}.field .select,.field .input{width:100%;min-width:0}.select,.input{height:38px}.topbar-row--stats{padding:0 12px 8px}.stats-bar{width:100%;justify-content:flex-start;gap:16px}.stat-item--muted{display:none}.stat-value{font-size:15px}.stat-label{font-size:10px}.stat-divider{display:none}.layout-bar{padding:6px 12px}.layout-label,.layout-info{display:none}.segmented--mini button{height:32px;padding:0 8px;font-size:12px}.stream-row{padding:6px 10px}.stream-grid{gap:8px}.word-card{padding:10px 12px 18px;border-radius:10px}.word-card.is-flipped{max-height:min(320px,58vh)}.card-btn{min-height:36px;padding:6px 10px}.card-tip,.card-source{display:none}.active-indicator{right:8px;bottom:8px;padding:4px 9px}.panel-drawer{width:100vw;padding-top:env(safe-area-inset-top)}.panel-head{padding:16px 16px 12px}.panel-body{padding:8px 16px 32px}.panel-toolbar{padding:12px 16px;flex-wrap:wrap}.setting-row{flex-wrap:wrap}.setting-control--rate input[type=range]{width:110px}.select--voice{max-width:100%}.notebook-list{padding:0 12px 24px;overflow-x:auto}.notebook-table{min-width:560px}.undo-toast{bottom:12px;padding:8px 12px;font-size:11px}.speech-toast{bottom:60px;font-size:11px;flex-wrap:wrap}.fatal{margin:32px 12px;padding:20px}}@media (hover: none) and (pointer: coarse){button,.word-card{-webkit-tap-highlight-color:transparent;touch-action:manipulation}.card-btn,.btn,.segmented button,.icon-btn{min-height:38px}.stream-scroll{-webkit-overflow-scrolling:touch;overscroll-behavior-y:contain}}