:root{--bg-primary: #001a3a;--bg-secondary: #002050;--bg-tertiary: #00377B;--bg-glass: rgba(6, 181, 205, .04);--bg-glass-hover: rgba(6, 181, 205, .08);--bg-glass-active: rgba(6, 181, 205, .12);--border-subtle: rgba(97, 192, 206, .12);--border-medium: rgba(97, 192, 206, .2);--border-accent: rgba(6, 181, 205, .5);--text-primary: #FFFFFF;--text-secondary: #C2D0D7;--text-tertiary: #61C0CE;--text-accent: #06B5CD;--accent-primary: #06B5CD;--accent-primary-hover: #61C0CE;--accent-secondary: #61C0CE;--accent-gradient: linear-gradient(135deg, #06B5CD, #00377B);--accent-gradient-hover: linear-gradient(135deg, #61C0CE, #004a9e);--success: #34d399;--success-bg: rgba(52, 211, 153, .12);--warning: #fbbf24;--warning-bg: rgba(251, 191, 36, .12);--error: #f87171;--error-bg: rgba(248, 113, 113, .12);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 12px rgba(0, 26, 58, .5);--shadow-lg: 0 8px 32px rgba(0, 26, 58, .6);--shadow-glow: 0 0 40px rgba(6, 181, 205, .2);--font-family: "Inter", 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1)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 30% 20%,rgba(6,181,205,.06) 0%,transparent 50%),radial-gradient(ellipse at 70% 80%,rgba(0,55,123,.04) 0%,transparent 50%);pointer-events:none;z-index:0}#root{position:relative;z-index:1;min-height:100vh}.app-container{max-width:1200px;margin:0 auto;padding:var(--space-6) var(--space-6) var(--space-16)}.app-header{text-align:center;padding:var(--space-12) 0 var(--space-8)}.app-logo{font-size:var(--font-size-4xl);font-weight:800;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.03em;margin-bottom:var(--space-2)}.app-subtitle{font-size:var(--font-size-lg);color:var(--text-secondary);font-weight:400}.stepper{display:flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-8) 0;flex-wrap:wrap}.step-item{display:flex;align-items:center;gap:var(--space-2)}.step-circle{width:40px;height:40px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:var(--font-size-sm);transition:var(--transition-base);border:2px solid 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var(--space-5);border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:500;box-shadow:var(--shadow-lg);animation:toastIn .3s ease-out;max-width:400px}@keyframes toastIn{0%{opacity:0;transform:translateY(16px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.toast-success{background:var(--success);color:var(--bg-primary)}.toast-error{background:var(--error);color:#fff}.toast-info{background:var(--accent-primary);color:#fff}@media(max-width:640px){.app-container{padding:var(--space-4)}.app-logo{font-size:var(--font-size-3xl)}.glass-card{padding:var(--space-5)}.stepper{gap:var(--space-1)}.step-label{display:none}.step-connector{width:20px}.action-bar{flex-direction:column}.voice-grid{grid-template-columns:1fr}}.avatar-controls{display:flex;align-items:center;gap:var(--space-4);margin-bottom:var(--space-4);flex-wrap:wrap}.position-selector{display:flex;align-items:center;gap:var(--space-2)}.position-label{font-size:var(--font-size-xs);color:var(--text-tertiary);font-weight:500}.position-btn{width:28px;height:28px;border-radius:var(--radius-sm);border:1px solid var(--border-subtle);background:var(--bg-secondary);color:var(--text-secondary);font-size:var(--font-size-xs);cursor:pointer;transition:var(--transition-base);display:flex;align-items:center;justify-content:center;padding:0}.position-btn:hover{border-color:var(--border-medium);background:var(--bg-glass-hover)}.position-btn.active{border-color:var(--accent-primary);background:#06b5cd26;color:var(--text-accent)}.video-wrapper{position:relative;display:inline-block;width:100%}.video-wrapper .result-video{margin-bottom:0}.avatar-pip{position:absolute;width:140px;height:140px;border-radius:var(--radius-lg);overflow:hidden;background:#0f0f19bf;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:2px solid rgba(230,126,34,.3);box-shadow:0 4px 24px #0006,0 0 20px #e67e221a;z-index:10;transition:all .3s ease}.avatar-pip:hover{transform:scale(1.05);border-color:#e67e2280;box-shadow:0 4px 30px #00000080,0 0 30px #e67e2233}.avatar-pip.top-left{top:12px;left:12px}.avatar-pip.top-right{top:12px;right:12px}.avatar-pip.bottom-left{bottom:56px;left:12px}.avatar-pip.bottom-right{bottom:56px;right:12px}.avatar-pip .lipsync-avatar-container{background:transparent;border:none;border-radius:0;padding:var(--space-2);gap:var(--space-1);height:100%;justify-content:center}.avatar-pip .avatar-wrapper{max-width:100%;width:100%;height:auto}.avatar-pip .avatar-hint{font-size:8px;margin:0}@media(max-width:768px){.avatar-pip{width:100px;height:100px}.avatar-pip.bottom-left,.avatar-pip.bottom-right{bottom:48px}}.embed-section{margin-top:var(--space-6);padding-top:var(--space-6);border-top:1px solid var(--border-subtle)}.embed-title{font-size:var(--font-size-lg);font-weight:600;margin-bottom:var(--space-4)}.embed-url-row{display:flex;gap:var(--space-2);align-items:center;flex-wrap:wrap}.embed-url-input{flex:1;min-width:200px;font-size:var(--font-size-xs)!important;font-family:monospace}.embed-preview{margin-top:var(--space-4);border:1px solid var(--border-subtle);border-radius:var(--radius-md);overflow:hidden}.embed-preview iframe{display:block;border:none}.live-transcript{margin-top:var(--space-6);background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);overflow:hidden}.live-transcript-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--border-subtle);background:var(--bg-glass)}.live-transcript-title{font-size:var(--font-size-sm);font-weight:600;color:var(--text-primary)}.live-transcript-hint{font-size:var(--font-size-xs);color:var(--text-tertiary)}.live-transcript-body{padding:var(--space-4) var(--space-5);max-height:200px;overflow-y:auto;line-height:2.2;scroll-behavior:smooth}.live-transcript-body::-webkit-scrollbar{width:6px}.live-transcript-body::-webkit-scrollbar-track{background:transparent}.live-transcript-body::-webkit-scrollbar-thumb{background:var(--border-medium);border-radius:var(--radius-full)}.transcript-word{display:inline;cursor:pointer;padding:2px 3px;border-radius:4px;color:var(--text-secondary);font-size:var(--font-size-base);font-weight:400;transition:all .15s ease;position:relative}.transcript-word:after{content:" "}.transcript-word:hover{color:var(--text-primary);background:#06b5cd1a}.transcript-word.past{color:var(--text-tertiary)}.transcript-word.active{color:#fff;font-weight:700;background:var(--accent-gradient);border-radius:5px;padding:2px 6px;box-shadow:0 0 12px #06b5cd66;transform:scale(1.05);display:inline-block}.word-correction-popover{background:var(--bg-secondary);border:1px solid var(--border-medium);border-radius:var(--radius-md);padding:var(--space-2) var(--space-3);box-shadow:0 8px 24px #0006;min-width:240px;animation:popoverFadeIn .15s ease}@keyframes popoverFadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.word-correction-header{display:flex;align-items:center;gap:var(--space-2);margin-bottom:var(--space-2)}.word-correction-original{color:var(--error);font-weight:600;font-size:var(--font-size-sm);text-decoration:line-through}.word-correction-arrow{color:var(--text-tertiary);font-size:var(--font-size-sm)}.word-correction-body{display:flex;align-items:center;gap:var(--space-2)}.word-correction-input{flex:1;padding:var(--space-1) var(--space-2);background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--success);font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:600;outline:none}.word-correction-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 2px #06b5cd33}.dictionary-inline{margin:var(--space-4) 0;padding:var(--space-3) var(--space-4);background:#06b5cd0d;border:1px solid rgba(6,181,205,.15);border-radius:var(--radius-md)}.dictionary-inline-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-2)}.dictionary-inline-title{font-size:var(--font-size-sm);font-weight:600;color:var(--text-primary)}.dictionary-inline-actions{display:flex;gap:var(--space-2)}.dictionary-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:var(--space-2)}.dictionary-tag{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-full);font-size:12px;line-height:1.2}.dictionary-tag-from{color:var(--error);text-decoration:line-through;font-weight:500}.dictionary-tag-arrow{color:var(--text-tertiary);font-size:10px}.dictionary-tag-to{color:var(--success);font-weight:600}.dictionary-tag-remove{background:none;border:none;color:var(--text-tertiary);cursor:pointer;font-size:14px;line-height:1;padding:0 2px;margin-left:2px;border-radius:50%;transition:all .15s}.dictionary-tag-remove:hover{color:var(--error);background:#ef444426}.dictionary-add-inline{display:flex;align-items:center;gap:var(--space-2);margin-top:var(--space-2)}.dictionary-add-inline input{flex:1;padding:var(--space-1) var(--space-2);background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font-family);font-size:var(--font-size-sm);outline:none}.dictionary-add-inline input:focus{border-color:var(--accent-primary)}.mode-selector{text-align:center}.mode-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:var(--space-6);margin-top:var(--space-6)}@media(max-width:640px){.mode-options{grid-template-columns:1fr}}.mode-card{display:flex;flex-direction:column;align-items:center;gap:var(--space-3);padding:var(--space-8) var(--space-6);background:var(--bg-secondary);border:2px solid var(--border-subtle);border-radius:var(--radius-lg);cursor:pointer;transition:var(--transition-base);font-family:var(--font-family);text-align:center}.mode-card:hover{border-color:var(--accent-primary);background:#06b5cd0f;transform:translateY(-4px);box-shadow:var(--shadow-glow)}.mode-icon{font-size:3rem}.mode-name{font-size:var(--font-size-xl);font-weight:700;color:var(--text-primary)}.mode-desc{font-size:var(--font-size-sm);color:var(--text-secondary);line-height:1.6;max-width:280px}.mode-badge{margin-top:var(--space-2)}.player-chapters-section{margin-top:var(--space-6);background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);overflow:hidden}.chapters-editor-title{font-size:var(--font-size-base);font-weight:600;color:var(--text-primary);padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--border-subtle);background:var(--bg-glass);margin:0}.chapters-editor-hint{font-size:var(--font-size-xs);color:var(--text-tertiary);padding:var(--space-2) var(--space-4);margin:0}.chapters-editor-list{padding:var(--space-2)}.chapter-editor-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);transition:var(--transition-base)}.chapter-editor-item:hover{background:#06b5cd0a}.chapter-editor-item.active{background:#06b5cd14;border-left:3px solid var(--accent-primary)}.chapter-time-btn{min-width:52px;padding:var(--space-1) var(--space-2);background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-accent);font-family:monospace;font-size:var(--font-size-xs);font-weight:600;cursor:pointer;transition:var(--transition-base);flex-shrink:0}.chapter-time-btn:hover{background:#06b5cd26;border-color:var(--accent-primary)}.chapter-title-text{flex:1;font-size:var(--font-size-sm);color:var(--text-primary);cursor:pointer;padding:var(--space-1) var(--space-2);border-radius:var(--radius-sm);transition:var(--transition-base);display:flex;align-items:center;gap:var(--space-2)}.chapter-title-text:hover{background:#06b5cd0f}.chapter-edit-icon{opacity:0;font-size:var(--font-size-xs);transition:opacity .2s}.chapter-title-text:hover .chapter-edit-icon{opacity:.6}.chapter-edit-row{display:flex;flex:1;gap:var(--space-2);align-items:center}.chapter-edit-input{flex:1;padding:var(--space-1) var(--space-2);background:var(--bg-tertiary);border:1px solid var(--accent-primary);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font-family);font-size:var(--font-size-sm);outline:none}.btn-sm{padding:var(--space-1) var(--space-2)!important;font-size:var(--font-size-xs)!important;min-width:unset!important}.sync-info-box{background:var(--bg-glass);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:var(--space-4) var(--space-5);margin:var(--space-6) 0}.sync-info-box p{color:var(--text-secondary);margin-bottom:var(--space-3)}.sync-info-box ul{list-style:none;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:var(--space-2)}@media(max-width:640px){.sync-info-box ul{grid-template-columns:1fr}}.sync-info-box li{color:var(--text-secondary);font-size:var(--font-size-sm);padding:var(--space-1) 0}.embed-live-transcript{max-height:120px;overflow-y:auto;scroll-behavior:smooth;padding:var(--space-3) var(--space-4)!important}.embed-live-transcript::-webkit-scrollbar{width:4px}.embed-live-transcript::-webkit-scrollbar-track{background:transparent}.embed-live-transcript::-webkit-scrollbar-thumb{background:var(--border-subtle);border-radius:4px}.embed-transcript-words{line-height:2;font-size:.95rem}.embed-word{cursor:pointer;transition:all .15s ease;border-radius:3px;padding:1px 2px;color:var(--text-secondary)}.embed-word:hover{background:#06b5cd26;color:var(--text-primary)}.embed-word.active{color:#fff;font-weight:700;background:var(--accent-gradient);border-radius:4px;padding:2px 5px;box-shadow:0 0 14px #06b5cd80;transform:scale(1.08);display:inline-block}.embed-word.past{color:var(--text-tertiary);opacity:.55}