:root{--bg-body:#fff;--bg-stage:#fff;--color-text:#1a1a2e;--color-text-odd:#000;--color-text-even:#1565c0;--color-title:#c00;--color-chord:#c20;--color-meta:#222;--color-singer-tone:#1565c0;--color-op-title:#c00;--color-op-meta:#333;--color-op-chord:#c62828;--color-op-end:#ff3b30;--color-marquee:#c20;--bg-one-page:#fff;--bg-login:linear-gradient(135deg, #e8f0fe 0%, #d4e4fc 50%, #e0ecff 100%);--bg-login-card:#ffffffeb;--border-login-card:#64b4ff59;--color-login-label:#1565c0;--color-login-subtitle:#546e7a;--color-remember:#1565c0;--bg-search-dropdown:#fff;--color-ss-title:#1a1a2e;--color-ss-meta:#475569;--color-ss-snippet:#64748b;--border-search-dropdown:#64b4ff59;--singer-btn-bg:#add8ff59;--singer-btn-border:#64b4ff66;--singer-btn-color:#1565c0;--singer-btn-active-bg:#fffffff2;--singer-btn-active-border:#90caf9;--singer-btn-active-color:#0d47a1;--singer-hint-color:#78909c;--yt-header-bg:#e6f0fffa;--yt-title-color:#1565c0;--yt-close-color:#00000080;--bg-login-input:#ffffffe6;--border-login-input:#64b4ff66;--color-login-input:#1a1a2e;--color-stage-logo-filter:drop-shadow(0 4px 10px #00000014)}body:not(.theme-dark) #slide-content{font-weight:600}body:not(.theme-dark) .chord{font-weight:700}body:not(.theme-dark) .op-line,body:not(.theme-dark) .op-chord{font-weight:600}body.theme-dark{--bg-body:#0f1117;--bg-stage:#12141c;--color-text:#e8eaf6;--color-text-odd:#e8eaf6;--color-text-even:#90caf9;--color-title:#ff6b6b;--color-chord:#ff8c42;--color-meta:#c5cae9;--color-singer-tone:#90caf9;--color-op-title:#ff3b30;--color-op-meta:#b0bec5;--color-op-chord:#ff8c42;--color-op-end:#ff3b30;--color-marquee:#ff8c42;--bg-one-page:#12141c;--bg-login:linear-gradient(135deg, #0f1117 0%, #1a1f35 50%, #0d1526 100%);--bg-login-card:#12141ef7;--border-login-card:#64b4ff33;--color-login-label:#90caf9;--color-login-subtitle:#78909c;--color-remember:#90caf9;--bg-search-dropdown:#1a1f35;--color-ss-title:#e8eaf6;--color-ss-meta:#90a4ae;--color-ss-snippet:#78909c;--border-search-dropdown:#64b4ff33;--singer-btn-bg:#1a1f35e6;--singer-btn-border:#64b4ff40;--singer-btn-color:#90caf9;--singer-btn-active-bg:#3b82f640;--singer-btn-active-border:#3b82f6;--singer-btn-active-color:#bfdbfe;--singer-hint-color:#546e7a;--yt-header-bg:#12141efa;--yt-title-color:#90caf9;--yt-close-color:#ffffff80;--bg-login-input:#ffffff0f;--border-login-input:#64b4ff40;--color-login-input:#e8eaf6;--color-stage-logo-filter:drop-shadow(0 4px 10px #0006) brightness(1.1)}html,body{background:var(--bg-body);width:100%;height:100%;color:var(--color-text);font-family:Inter,Segoe UI,system-ui,sans-serif;transition:background .3s,color .3s;overflow:hidden}#login-view{background:var(--bg-login);z-index:10000;justify-content:center;align-items:center;width:100%;height:100%;transition:opacity .4s,background .3s;display:flex;position:fixed;inset:0}#login-view.hidden{display:none}.login-card{background:var(--bg-login-card);border:1px solid var(--border-login-card);-webkit-backdrop-filter:blur(12px);border-radius:16px;width:400px;padding:40px 36px;transition:background .3s,border-color .3s;box-shadow:0 20px 60px #0000002e}.login-card h1{color:var(--color-login-label);text-align:center;margin-bottom:8px;font-size:24px}.login-card .subtitle{color:var(--color-login-subtitle);text-align:center;margin-bottom:30px;font-size:13px}.login-form-group{margin-bottom:16px}.login-form-group label{color:var(--color-login-label);margin-bottom:6px;font-size:13px;font-weight:600;display:block}.login-form-group input{background:var(--bg-login-input);border:1px solid var(--border-login-input);width:100%;color:var(--color-login-input);border-radius:8px;outline:none;padding:12px 14px;font-family:Inter,Segoe UI,sans-serif;font-size:15px;transition:background .3s,border-color .3s,color .3s}.login-form-group input:focus{border-color:#64b4ffb3;box-shadow:0 0 0 3px #3b82f633}.login-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#2563eb,#3b82f6);border:none;border-radius:8px;width:100%;margin-top:8px;padding:13px;font-family:Inter,Segoe UI,sans-serif;font-size:15px;font-weight:600;transition:opacity .2s}.login-btn:hover{opacity:.85}.login-btn:disabled{opacity:.5;cursor:not-allowed}.remember-row{align-items:center;gap:8px;margin:8px 0 0;display:flex}.remember-row input[type=checkbox]{accent-color:#3b82f6;cursor:pointer;width:16px;height:16px}.remember-row label{color:var(--color-remember);cursor:pointer;-webkit-user-select:none;user-select:none;font-size:13px}.error-msg{color:#fca5a5;text-align:center;margin-top:12px;font-size:13px;display:none}.error-msg.show{display:block}#app-view{width:100%;height:100%;display:none;position:fixed;inset:0}#app-view.active{display:block}#control-bar-trigger{z-index:3001;background:0 0;height:75px;position:fixed;top:0;left:0;right:0}#control-bar{z-index:3000;-webkit-backdrop-filter:blur(12px);opacity:1;background:#060c23fa;border-bottom:1px solid #64b4ff2e;flex-wrap:wrap;align-items:center;gap:8px;min-height:52px;padding:7px 16px;transition:transform .4s cubic-bezier(.16,1,.3,1),opacity .3s;display:flex;position:fixed;top:0;left:0;right:0;transform:translateY(0);box-shadow:0 2px 16px #00000080}#control-bar.hidden{opacity:0;pointer-events:none;transform:translateY(-100%)}.ctrl-divider{background:linear-gradient(#0000 0%,#64b4ff59 25% 75%,#0000 100%);flex-shrink:0;width:1px;height:32px;margin:0 4px}.ctrl-group{align-items:center;gap:6px;display:flex}.ctrl-btn{color:#d4e9ff;cursor:pointer;white-space:nowrap;background:#64b4ff14;border:1px solid #64b4ff38;border-radius:9px;flex-shrink:0;align-items:center;gap:6px;height:36px;padding:7px 13px;font-family:Inter,Segoe UI,sans-serif;font-size:13px;font-weight:500;line-height:1;transition:all .18s;display:inline-flex}.ctrl-btn:hover{color:#fff;background:#64b4ff33;border-color:#64b4ffa6;transform:translateY(-1px);box-shadow:0 0 10px #3b82f640}.ctrl-btn:active{transform:translateY(0)}.ctrl-btn.active{color:#7dd3fc;background:#3b82f633;border-color:#64b4ffbf;box-shadow:0 0 10px #3b82f633,inset 0 0 6px #3b82f61a}.ctrl-btn-sm{text-align:center;min-width:34px;height:36px;padding:6px 10px;font-size:15px;font-weight:700}.ctrl-btn-primary{color:#93c5fd!important;background:#3b82f633!important;border-color:#3b82f680!important;font-weight:600!important}.ctrl-btn-primary:hover{color:#fff!important;background:#3b82f659!important;border-color:#3b82f6cc!important;box-shadow:0 0 14px #3b82f659!important}.ctrl-label{color:#93c5fd;white-space:nowrap;flex-shrink:0;font-size:12px}#font-size-display,#transpose-display{color:#bfdbfe;white-space:nowrap;text-align:center;letter-spacing:.3px;min-width:56px;font-family:Inter,Segoe UI,sans-serif;font-size:13px;font-weight:600}.ctrl-btn-stack{flex-direction:column;justify-content:center;align-items:center;gap:2px;display:inline-flex}.ctrl-btn-stacked{color:#d4e9ff;cursor:pointer;background:#64b4ff14;border:1px solid #64b4ff38;border-radius:4px;justify-content:center;align-items:center;width:24px;height:17px;padding:0;transition:all .15s;display:flex}.ctrl-btn-stacked:hover{color:#fff;background:#64b4ff33;border-color:#64b4ffa6;box-shadow:0 0 6px #3b82f633}.ctrl-btn-stacked:active{transform:scale(.95)}.ctrl-btn-stacked svg{pointer-events:none}.ctrl-btn-icon-only{border-radius:50%!important;justify-content:center!important;align-items:center!important;width:36px!important;height:36px!important;padding:0!important}.ctrl-btn-chord{border-radius:20px;align-items:center;gap:7px;height:36px;padding:7px 16px;font-size:13px;font-weight:600;transition:all .25s;display:flex}.ctrl-btn-chord svg{flex-shrink:0;width:18px;height:18px}.ctrl-btn-chord .chord-label{letter-spacing:.8px;text-transform:uppercase;font-size:12px;font-weight:700}.ctrl-btn-chord.active{color:#93c5fd;background:#3b82f640;border-color:#64b4ffcc;box-shadow:0 0 12px #3b82f64d,inset 0 0 8px #3b82f61a}.ctrl-btn-chord:not(.active){color:#fca5a5;background:#ef44441f;border-color:#ef444466}.ctrl-btn-chord:not(.active):hover{color:#fecaca;background:#ef444433;border-color:#ef4444b3}.ctrl-btn-fullscreen{border-radius:20px;align-items:center;gap:7px;height:36px;padding:7px 16px;font-size:13px;font-weight:600;transition:all .25s;display:flex}.ctrl-btn-fullscreen svg{flex-shrink:0;width:18px;height:18px}.ctrl-btn-fullscreen .fullscreen-label{letter-spacing:.8px;text-transform:uppercase;font-size:12px;font-weight:700}.ctrl-btn-fullscreen.active{color:#93c5fd;background:#3b82f640;border-color:#64b4ffcc;box-shadow:0 0 12px #3b82f64d,inset 0 0 8px #3b82f61a}.ctrl-btn-fullscreen:not(.active){color:#d4e9ff;background:#64b4ff14;border-color:#64b4ff38}.ctrl-btn-theme{border-radius:20px;align-items:center;gap:6px;height:36px;padding:7px 13px;font-size:13px;font-weight:600;display:inline-flex}.ctrl-btn-theme svg{flex-shrink:0;width:18px;height:18px;transition:transform .4s cubic-bezier(.34,1.56,.64,1)}.ctrl-btn-theme:hover svg{transform:rotate(20deg)scale(1.15)}.ctrl-btn-theme .theme-label{letter-spacing:.5px;text-transform:uppercase;font-size:12px;font-weight:700}.ctrl-btn-one-page{align-items:center;gap:6px;font-weight:600;display:inline-flex}.ctrl-btn-one-page svg{flex-shrink:0;width:17px;height:17px}#search-wrap{flex:2;align-items:center;gap:4px;min-width:280px;max-width:900px;display:flex;position:relative}#search-input{color:#fff;background:#ffffff14;border:1px solid #64b4ff40;border-radius:8px;outline:none;width:100%;height:38px;padding:0 12px;font-family:Inter,Segoe UI,sans-serif;font-size:16px;transition:border-color .2s,background .2s}#search-input::placeholder{color:#ffffff59}#search-input:focus{background:#ffffff1f;border-color:#64b4ff99;box-shadow:0 0 0 2px #3b82f61f}.ctrl-btn-voice{color:#8ab4f8;cursor:pointer;background:#64b4ff14;border:1px solid #64b4ff40;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:38px;min-width:38px;height:38px;padding:0;transition:all .3s;display:flex;position:relative;overflow:hidden}.ctrl-btn-voice:hover{color:#fff;background:#64b4ff2e;border-color:#64b4ff80;box-shadow:0 0 10px #3b82f633}.ctrl-btn-voice .mic-icon{z-index:2;transition:transform .2s;position:relative}.ctrl-btn-voice:hover .mic-icon{transform:scale(1.1)}.ctrl-btn-voice.recording{color:#fca5a5;background:#ef444440;border-color:#ef4444b3;animation:1.5s ease-in-out infinite voice-pulse;box-shadow:0 0 16px #ef44444d}.ctrl-btn-voice.recording .mic-icon{color:#fca5a5}.voice-ripple{opacity:0;pointer-events:none;z-index:1;border:2px solid #ef444480;border-radius:50%;position:absolute;inset:-4px}.ctrl-btn-voice.recording .voice-ripple{animation:1.5s ease-out infinite voice-ripple-anim}@keyframes voice-pulse{0%,to{box-shadow:0 0 8px #ef444433}50%{box-shadow:0 0 20px #ef444473}}@keyframes voice-ripple-anim{0%{opacity:.7;transform:scale(.8)}to{opacity:0;transform:scale(1.6)}}#search-dropdown{background:var(--bg-search-dropdown);border:1px solid var(--border-search-dropdown);z-index:9999;border-radius:10px;max-height:420px;transition:background .3s;display:none;position:absolute;top:calc(100% + 4px);left:0;right:0;overflow-y:auto;box-shadow:0 12px 40px #00000040}#search-dropdown.open{display:block}.ss-item{cursor:pointer;border-bottom:1px solid #0000000f;flex-direction:column;padding:14px 18px;transition:background .15s,color .15s;display:flex}.ss-item:last-child{border-bottom:none}.ss-item:hover,.ss-item.active{background:#1e40af}.ss-item:hover .ss-title,.ss-item.active .ss-title{color:#fff}.ss-item:hover .ss-meta,.ss-item.active .ss-meta{color:#bfdbfe}.ss-item:hover .ss-snippet,.ss-item.active .ss-snippet{color:#e2e8f0}.ss-item:hover .ss-title mark,.ss-item.active .ss-title mark{color:gold}.ss-title{color:var(--color-ss-title);white-space:nowrap;text-overflow:ellipsis;font-size:15px;font-weight:600;transition:color .15s;overflow:hidden}.ss-title mark{color:#1565c0;background:0 0;font-weight:700}body.theme-dark .ss-title mark{color:#90caf9}.ss-meta{color:var(--color-ss-meta);white-space:nowrap;text-overflow:ellipsis;margin-top:4px;font-size:12.5px;transition:color .15s;overflow:hidden}.ss-snippet{color:var(--color-ss-snippet);white-space:pre-wrap;-webkit-line-clamp:4;-webkit-box-orient:vertical;margin-top:6px;font-size:12px;line-height:1.5;transition:color .15s;display:-webkit-box;overflow:hidden}.ss-loading,.ss-empty{text-align:center;color:#78909c;padding:16px;font-size:13px}#marquee-input{color:#fff;background:#ffffff14;border:1px solid #64b4ff40;border-radius:8px;outline:none;width:180px;height:34px;padding:0 10px;font-family:Inter,Segoe UI,sans-serif;font-size:13px;transition:border-color .2s}#marquee-input::placeholder{color:#ffffff59}#marquee-input:focus{border-color:#64b4ff99;box-shadow:0 0 0 2px #3b82f61f}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#6496c84d;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#6496c880}#stage-area{background:var(--bg-stage);transition:background .3s;position:fixed;inset:0;overflow:hidden}.slide-container{z-index:2;width:100%;height:100%;display:none;position:relative}#title-slide{text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:5vh 5vw;display:none}#title-slide.active{display:flex}#title{color:var(--color-title);text-shadow:none;-webkit-text-stroke:0px;margin-bottom:3vh;font-family:Lobster,Brush Script MT,cursive;font-size:clamp(48px,8vw,120px);line-height:1.2;transition:color 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6vh;display:none;position:absolute;bottom:0;left:0;right:0}#lyric-slide.active{display:flex}#slide-content{width:100%;font-family:Noto Serif,Georgia,serif;font-size:var(--font-size,4.5vmin);color:var(--color-text);-webkit-text-stroke:0px;text-shadow:none;text-align:center;white-space:pre-wrap;word-break:break-word;line-height:var(--line-height,2);flex-direction:column;align-items:center;transition:color .3s;animation:.15s ease-out slideIn;display:flex}@keyframes slideIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.lyric-line{margin-bottom:.1em;display:block;position:relative}.chord-row{height:1em;margin-bottom:-.2em;line-height:1;position:relative}.chord{font-family:Noto Serif,Georgia,serif;font-size:calc(var(--font-size,4.5vmin) * .7);color:var(--color-chord);-webkit-text-stroke:0px;text-shadow:none;white-space:nowrap;transform:translate(var(--chord-shift-x,0px), calc(-100% + 1.25em));pointer-events:none;transition:color 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auto}#one-page-overlay.mode-2p{--op-text-align:left;--op-stanza-gap:.425em;overflow:hidden}#one-page-body.mode-2p{column-count:2;column-fill:auto;column-gap:4vw;overflow:hidden}#one-page-body.mode-1p{column-count:1;height:auto}body.one-page-active #stage-area{bottom:0}.op-title,.op-meta,.op-line{box-sizing:border-box;width:100%;max-width:100%}.op-title{color:var(--color-op-title);break-inside:avoid;-webkit-column-break-inside:avoid;margin-bottom:.1em;font-family:Lobster,Brush Script MT,cursive;font-size:clamp(24px,4.5vmin,48px);font-weight:700;transition:color .3s}.op-meta{color:var(--color-op-meta);break-inside:avoid;-webkit-column-break-inside:avoid;margin-bottom:.8em;font-family:Noto Serif,Georgia,serif;font-size:clamp(14px,2.5vmin,26px);font-style:italic;transition:color .3s}.op-title,.op-meta{text-align:var(--op-text-align,left)}.op-line{break-inside:avoid;-webkit-column-break-inside:avoid;white-space:pre-wrap;word-break:break-word;line-height:1.5em;font-size:var(--op-font-size,3.4vmin);text-align:var(--op-text-align,left);color:var(--color-text);margin:0 0 .25em;font-family:Noto Serif,Georgia,serif;font-weight:450;transition:color .3s}.op-line-empty{height:0;min-height:0;margin:0 0 var(--op-stanza-gap,.425em) 0;line-height:0;overflow:hidden}.op-stanza{margin-bottom:var(--op-stanza-gap,.425em)}.op-stanza:last-child{margin-bottom:0}.op-stanza:nth-child(odd) .op-line{color:var(--color-text-odd)}.op-stanza:nth-child(2n) .op-line{color:var(--color-text-even)}.op-end-dot{color:var(--color-op-end);margin-left:.5em;font-weight:700}.op-chord{color:var(--color-op-chord);-webkit-text-stroke:0px;text-shadow:none;font-size:.8em;font-weight:300;transition:color .3s}body.one-page-chords-hidden 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