h4[data-v-0e7c23ab]{margin-top:20px;margin-bottom:15px;font-size:1.1em;color:#444;border-bottom:1px solid #eee;padding-bottom:5px}h4[data-v-0e7c23ab]:first-child{margin-top:0}.setting-group label[data-v-0e7c23ab]{display:flex;justify-content:space-between;align-items:center}.color-alpha-group[data-v-0e7c23ab]{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.color-alpha-group span[data-v-0e7c23ab]{font-weight:400;color:#666}.bg-actions[data-v-0e7c23ab]{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.upload-btn-style[data-v-0e7c23ab]{background:var(--accent, #2563eb)!important;color:#fff!important;border:none;padding:10px 18px;border-radius:999px;font-size:13px;font-weight:600;cursor:pointer}.upload-btn-style[data-v-0e7c23ab]:hover{background:var(--accent-hover, #1d4ed8)!important;color:#fff!important}.clear-bg-btn[data-v-0e7c23ab]{border:1px solid var(--border, #e5e7eb);background:#fff;color:var(--text-muted, #6b7280);padding:10px 14px;border-radius:999px;font-size:13px;cursor:pointer}.clear-bg-btn[data-v-0e7c23ab]:hover{border-color:var(--accent, #2563eb);color:var(--accent, #2563eb)}.player-panel h4[data-v-5ae33c70]{margin-bottom:10px}.player-buttons[data-v-5ae33c70]{display:flex;justify-content:center;flex-wrap:wrap;margin-bottom:10px}.player-btn[data-v-5ae33c70]{background:var(--accent, #2563eb);color:#fff;border:none;padding:8px 12px;border-radius:10px;margin:3px;cursor:pointer;font-size:12px}.loop-btn[data-v-5ae33c70]{background:#9ca3af}.loop-btn.active[data-v-5ae33c70]{background:#16a34a}.progress-bar[data-v-5ae33c70]{width:100%;height:8px;background:#e5e7eb;border-radius:4px;cursor:pointer}.progress-fill[data-v-5ae33c70]{height:100%;background:var(--accent, #2563eb);border-radius:4px;width:0%;transition:width .1s linear}.player-meta[data-v-5ae33c70]{display:flex;justify-content:space-between;font-size:12px;color:#666;margin-top:8px;gap:8px}.hotkey-hint[data-v-5ae33c70]{margin:6px 0 0;font-size:11px;color:#999;text-align:center}.sidebar-container[data-v-8d782921]{position:relative;z-index:1000}.collapse-btn[data-v-8d782921]{position:fixed;left:0;top:50%;transform:translateY(-50%);width:30px;height:60px;background:#fffffff2;border:1px solid #ddd;border-left:none;border-radius:0 15px 15px 0;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--accent, #2563eb);box-shadow:2px 0 10px #0000000f;transition:all .3s cubic-bezier(.25,.8,.25,1);z-index:1001}.collapse-btn[data-v-8d782921]:hover{background:var(--accent-soft, rgba(37, 99, 235, .12));transform:translateY(-50%) translate(2px)}.collapse-btn.collapsed[data-v-8d782921]{left:0}.collapse-btn .arrow[data-v-8d782921]{transition:transform .3s ease}.sidebar[data-v-8d782921]{width:300px;background:#fffffff2;box-shadow:2px 0 10px #0000001a;overflow:hidden;position:fixed;height:100vh;left:0;top:0;transition:transform .3s cubic-bezier(.25,.8,.25,1);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:1000}.sidebar.collapsed[data-v-8d782921]{transform:translate(-100%)}.sidebar-content[data-v-8d782921]{padding:20px;height:100%;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--accent, #2563eb) #f0f0f0;position:relative}.sidebar-content[data-v-8d782921]::-webkit-scrollbar{width:6px}.sidebar-content[data-v-8d782921]::-webkit-scrollbar-track{background:#f0f0f0;border-radius:3px}.sidebar-content[data-v-8d782921]::-webkit-scrollbar-thumb{background:var(--accent, #2563eb);border-radius:3px}.sidebar h2[data-v-8d782921]{color:#333;margin-bottom:8px;text-align:left;font-size:1.2em;font-weight:650}.sidebar-tip[data-v-8d782921]{font-size:13px;color:var(--text-muted, #6b7280);margin:0 0 20px;line-height:1.5}.sidebar h4[data-v-8d782921]{font-size:.95em;margin-bottom:10px;text-align:left;color:var(--text, #111827)}.upload-section[data-v-8d782921]{margin-bottom:25px}.upload-area[data-v-8d782921]{border:1px dashed var(--border, #e5e7eb);border-radius:12px;padding:20px;text-align:center;cursor:pointer;transition:all .2s ease;background:var(--surface-hover, #f3f4f6)}.upload-area[data-v-8d782921]:hover{border-color:var(--accent, #2563eb);background:var(--accent-soft, rgba(37, 99, 235, .12))}.upload-area h4[data-v-8d782921]{margin:0 0 10px;color:#333;font-size:1.05em}.upload-area p[data-v-8d782921]{margin:0;color:#666;font-size:.9em}.file-input[data-v-8d782921]{display:none}.sidebar-footer[data-v-8d782921]{text-align:left;font-size:12px;color:#999;margin-top:auto;padding-top:20px;border-top:1px solid #eee}.keyboard-section[data-v-8d782921]{margin-bottom:25px}.keyboard-toggle-btn[data-v-8d782921]{width:100%;padding:12px;border:none;border-radius:10px;background:var(--accent, #2563eb);color:#fff;font-weight:600;cursor:pointer;transition:all .2s ease}.keyboard-toggle-btn[data-v-8d782921]:hover{background:var(--accent-hover, #1d4ed8)}@media (max-width: 768px){.sidebar[data-v-8d782921]{width:280px;position:fixed}.sidebar-content[data-v-8d782921]{padding:15px}.collapse-btn[data-v-8d782921]{width:25px;height:50px;font-size:14px;z-index:1003}.upload-area[data-v-8d782921]{padding:15px}.upload-area h4[data-v-8d782921]{font-size:1em}}@media (max-width: 480px){.sidebar[data-v-8d782921]{width:260px}.sidebar h2[data-v-8d782921]{font-size:1.2em}.sidebar h4[data-v-8d782921]{font-size:.9em}}.note[data-v-e3214b92]{display:flex;justify-content:center;align-items:center;font-weight:700;border-radius:50%;box-shadow:0 2px 4px #0003;position:relative;margin:2px 0;width:2.4em;height:2.4em;transition:all .2s;color:var(--note-text-color);background-color:var(--note-bg-color-type1)}.note.multiple[data-v-e3214b92]{background-color:var(--note-bg-color-multiple, #ff6b6b)}.note.type-2.highlight[data-v-e3214b92]{background-color:var(--note-bg-color-type2)}.note.type-2.highlight.multiple[data-v-e3214b92]{background-color:var(--note-bg-color-type2-multiple, #e47566)}.note.hidden[data-v-e3214b92]{display:none}.sharp-dot[data-v-e3214b92]{position:absolute;top:.3em;left:50%;transform:translate(-50%);width:.3em;height:.3em;background:var(--note-text-color);border-radius:50%;z-index:2}.sharp-dot.double[data-v-e3214b92]{top:.2em}.sharp-dot.second[data-v-e3214b92]{top:.6em}.staff-container[data-v-e739aebe]{width:100%;max-width:100%;background:transparent;padding:8px 0 0;box-sizing:border-box}.staff-header[data-v-e739aebe]{text-align:left;margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid #eee}.staff-header h3[data-v-e739aebe]{margin:0 0 6px;color:#111827;font-size:1.15em}.staff-header p[data-v-e739aebe]{margin:0;color:#6b7280;font-size:.9em}.lyrics-panel[data-v-e739aebe]{margin-top:10px}.lyrics-toggle[data-v-e739aebe]{border:1px solid #d1d5db;background:#f9fafb;color:#374151;border-radius:6px;padding:4px 10px;font-size:.85em;cursor:pointer}.lyrics-toggle[data-v-e739aebe]:hover{background:#f3f4f6}.lyrics-badge[data-v-e739aebe]{margin-left:6px;color:#0f766e;font-weight:600}.lyrics-editor[data-v-e739aebe]{margin-top:8px;padding:10px;border:1px solid #e5e7eb;border-radius:8px;background:#fafafa}.lyrics-hint[data-v-e739aebe]{margin:0 0 8px;font-size:.8em;color:#6b7280;line-height:1.45}.lyrics-hint code[data-v-e739aebe]{padding:0 4px;border-radius:3px;background:#eef2ff;color:#3730a3;font-size:.95em}.lyrics-input[data-v-e739aebe]{width:100%;box-sizing:border-box;border:1px solid #d1d5db;border-radius:6px;padding:8px 10px;font-size:.95em;line-height:1.5;resize:vertical;font-family:Microsoft YaHei,PingFang SC,sans-serif;background:#fff}.lyrics-actions[data-v-e739aebe]{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:8px}.lyrics-btn[data-v-e739aebe]{border:1px solid #d1d5db;background:#fff;color:#374151;border-radius:6px;padding:4px 12px;font-size:.85em;cursor:pointer}.lyrics-btn.primary[data-v-e739aebe]{background:#0f766e;border-color:#0f766e;color:#fff}.lyrics-btn[data-v-e739aebe]:hover{filter:brightness(.97)}.lyrics-summary[data-v-e739aebe]{font-size:.78em;color:#6b7280}.staff-renderer[data-v-e739aebe]{width:100%;max-width:100%;min-height:0;display:block;padding:0;overflow-x:auto;-webkit-overflow-scrolling:touch;box-sizing:border-box}.staff-renderer[data-v-e739aebe] .staff-empty,.staff-empty[data-v-e739aebe]{width:100%;text-align:center;padding:24px 12px;color:#6b7280}.staff-renderer[data-v-e739aebe] svg{display:block;width:100%!important;max-width:100%;height:auto!important;background:transparent}@media (max-width: 768px){.staff-container[data-v-e739aebe]{padding:4px 0 0}.staff-header h3[data-v-e739aebe]{font-size:1.05em}}.compact-player[data-v-c2d90559]{flex:1;min-width:160px;max-width:420px;display:flex;flex-direction:column;gap:6px}.compact-btns[data-v-c2d90559]{display:flex;flex-wrap:wrap;gap:6px}.cp-btn[data-v-c2d90559]{height:30px;padding:0 10px;border:none;border-radius:8px;background:var(--accent, #2563eb);color:#fff;font-size:12px;font-weight:600;cursor:pointer}.cp-btn.ghost[data-v-c2d90559]{background:#fff;color:var(--text, #111827);border:1px solid var(--border, #e5e7eb)}.cp-btn.ghost.on[data-v-c2d90559]{border-color:var(--accent, #2563eb);color:var(--accent, #2563eb)}.compact-bar[data-v-c2d90559]{height:6px;background:#e5e7eb;border-radius:999px;cursor:pointer;overflow:hidden}.compact-fill[data-v-c2d90559]{height:100%;background:var(--accent, #2563eb);border-radius:999px;width:0;transition:width .1s linear}.compact-meta[data-v-c2d90559]{display:flex;justify-content:space-between;font-size:11px;color:var(--text-muted, #6b7280)}@media (max-width: 768px){.compact-player[data-v-c2d90559]{max-width:none;width:100%;order:3}}.follow-fab[data-v-61087e2b]{position:fixed;top:76px;right:16px;z-index:1900;display:flex;align-items:center;gap:4px;padding:4px;background:#fffffff5;border:1px solid var(--border, #e5e7eb);border-radius:999px;box-shadow:0 6px 20px #0000001a;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.follow-fab.collapsed[data-v-61087e2b]{padding:0;border-radius:50%}.follow-main[data-v-61087e2b]{border:none;background:var(--accent, #2563eb);color:#fff;font-size:12px;font-weight:600;padding:8px 12px;border-radius:999px;cursor:pointer;white-space:nowrap}.follow-min[data-v-61087e2b]{width:28px;height:28px;border:none;border-radius:50%;background:transparent;color:#6b7280;cursor:pointer;font-size:12px}.follow-min[data-v-61087e2b]:hover{background:#f3f4f6;color:#111827}.follow-icon[data-v-61087e2b]{width:40px;height:40px;border:none;border-radius:50%;background:var(--accent, #2563eb);color:#fff;font-size:18px;font-weight:700;cursor:pointer;line-height:1}@media (max-width: 768px){.follow-fab[data-v-61087e2b]{top:auto;bottom:88px;right:12px}}.library-home[data-v-5598fba7]{width:min(760px,100%);margin:0 auto;padding:8px 0 48px}.library-home.dragover[data-v-5598fba7]{outline:2px dashed var(--accent);outline-offset:8px;border-radius:16px;background:var(--accent-soft)}.hero[data-v-5598fba7]{margin-bottom:28px}.hero-kicker[data-v-5598fba7]{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);margin-bottom:8px}.hero-title[data-v-5598fba7]{font-size:clamp(1.8rem,3vw,2.4rem);font-weight:650;color:var(--text);margin:0 0 10px;letter-spacing:-.02em}.hero-desc[data-v-5598fba7]{margin:0;color:var(--text-muted);font-size:15px;line-height:1.6}.search-panel[data-v-5598fba7]{margin-bottom:28px}.search-row[data-v-5598fba7]{display:flex;gap:10px}.search-input[data-v-5598fba7]{flex:1;height:48px;padding:0 16px;border:1px solid var(--border);border-radius:12px;background:var(--surface);font-size:15px;color:var(--text);outline:none}.search-input[data-v-5598fba7]:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.search-history[data-v-5598fba7]{margin-top:14px}.history-head[data-v-5598fba7]{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;font-size:13px;font-weight:600;color:var(--text-muted)}.history-tags[data-v-5598fba7]{display:flex;flex-wrap:wrap;gap:8px}.history-tag[data-v-5598fba7]{display:inline-flex;align-items:center;gap:4px;max-width:100%;padding:5px 6px 5px 10px;border:1px solid var(--border);border-radius:999px;background:var(--surface);color:var(--text);font-size:12px;cursor:pointer}.history-tag[data-v-5598fba7]:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft, #eff6ff)}.tag-text[data-v-5598fba7]{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:180px}.tag-remove[data-v-5598fba7]{display:inline-flex;width:18px;height:18px;align-items:center;justify-content:center;border-radius:50%;color:#9ca3af;font-size:14px;line-height:1}.tag-remove[data-v-5598fba7]:hover{background:#0000000f;color:#111827}.secondary-actions[data-v-5598fba7]{display:flex;align-items:center;gap:12px;margin-top:12px;flex-wrap:wrap}.hint[data-v-5598fba7]{font-size:13px;color:var(--text-muted)}.file-input[data-v-5598fba7]{display:none}.block[data-v-5598fba7]{margin-bottom:28px}.block-head[data-v-5598fba7]{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:12px}.block-head h3[data-v-5598fba7]{margin:0;font-size:15px;font-weight:600;color:var(--text)}.count[data-v-5598fba7]{font-size:12px;color:var(--text-muted)}.sheet-list[data-v-5598fba7]{list-style:none;margin:0;padding:0;border:1px solid var(--border);border-radius:14px;background:var(--surface);overflow:hidden}.sheet-list li[data-v-5598fba7]{display:flex;align-items:center;gap:12px;padding:12px 14px;border-bottom:1px solid var(--border)}.sheet-list li[data-v-5598fba7]:last-child{border-bottom:none}.sheet-list li[data-v-5598fba7]:hover{background:var(--surface-hover)}.sheet-main[data-v-5598fba7]{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.name[data-v-5598fba7]{font-size:14px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.meta[data-v-5598fba7]{font-size:12px;color:var(--text-muted)}.rank[data-v-5598fba7]{width:22px;height:22px;border-radius:6px;background:#e8eaed;color:#555;font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}.rank-1[data-v-5598fba7]{background:#1f2937;color:#fff}.rank-2[data-v-5598fba7]{background:#4b5563;color:#fff}.rank-3[data-v-5598fba7]{background:#9ca3af;color:#fff}.btn[data-v-5598fba7]{border:none;border-radius:10px;padding:0 16px;height:48px;font-size:14px;font-weight:600;cursor:pointer;transition:background .15s ease,color .15s ease,opacity .15s ease}.btn[data-v-5598fba7]:disabled{opacity:.6;cursor:not-allowed}.btn.primary[data-v-5598fba7]{background:var(--accent);color:#fff}.btn.primary[data-v-5598fba7]:hover:not(:disabled){background:var(--accent-hover)}.btn.ghost[data-v-5598fba7]{height:36px;background:transparent;border:1px solid var(--border);color:var(--text)}.btn.ghost[data-v-5598fba7]:hover{background:var(--surface-hover)}.btn.small[data-v-5598fba7]{height:32px;padding:0 12px;font-size:12px;background:var(--accent);color:#fff;flex-shrink:0}.btn.small[data-v-5598fba7]:hover{background:var(--accent-hover)}.text-btn[data-v-5598fba7]{border:none;background:none;color:var(--text-muted);font-size:12px;cursor:pointer}.text-btn[data-v-5598fba7]:hover{color:var(--accent)}.empty-msg[data-v-5598fba7]{padding:28px 16px;text-align:center;color:var(--text-muted);font-size:14px;border:1px dashed var(--border);border-radius:14px;background:var(--surface)}@media (max-width: 640px){.search-row[data-v-5598fba7]{flex-direction:column}.btn.primary[data-v-5598fba7]{width:100%}}.sheet-container[data-v-34e4a83b]{width:100%;transition:margin-left .3s cubic-bezier(.25,.8,.25,1)}.song-info[data-v-34e4a83b]{background:#fffffff2;border-radius:15px;padding:20px 25px;margin-bottom:20px;box-shadow:0 4px 15px #0000000d}.song-header[data-v-34e4a83b]{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:15px}.song-details[data-v-34e4a83b]{flex:0 1 auto;min-width:140px}.song-title-row[data-v-34e4a83b]{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.song-title-row h3[data-v-34e4a83b]{margin:0}.copy-name-btn[data-v-34e4a83b]{border:1px solid #ddd;background:#fff;color:#666;border-radius:14px;padding:4px 10px;font-size:12px;cursor:pointer}.copy-name-btn[data-v-34e4a83b]:hover{border-color:var(--accent, #2563eb);color:var(--accent, #2563eb)}.view-mode-toggle[data-v-34e4a83b]{flex-shrink:0}.mode-toggle-btn[data-v-34e4a83b]{background:var(--accent, #2563eb);color:#fff;border:none;padding:10px 20px;border-radius:999px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease;box-shadow:none}.mode-toggle-btn[data-v-34e4a83b]:hover{background:var(--accent-hover, #1d4ed8)}.mode-toggle-btn.active[data-v-34e4a83b]{background:#111827;box-shadow:none}.song-info h3[data-v-34e4a83b]{font-size:1.4em}.seek-feedback[data-v-34e4a83b]{position:fixed;pointer-events:none;z-index:9999;font-size:24px;color:#ff9a56;transform:translate(-50%,-50%);animation:seekPulse-34e4a83b 1s ease-out forwards}@keyframes seekPulse-34e4a83b{0%{opacity:1;transform:translate(-50%,-50%) scale(1)}50%{opacity:.8;transform:translate(-50%,-50%) scale(1.5)}to{opacity:0;transform:translate(-50%,-50%) scale(2)}}.sheet-music[data-v-34e4a83b]{border:1px solid #e0e0e0;border-radius:15px;padding:25px;margin:10px 0;font-family:Courier New,monospace;position:relative;background:var(--sheet-bg-color);box-shadow:0 8px 30px #0000001a;transition:all .3s ease;width:100%;max-width:100%;box-sizing:border-box;overflow-x:hidden;cursor:pointer;-webkit-user-select:none;user-select:none}.sheet-music.is-staff-mode[data-v-34e4a83b]{padding:12px 14px;font-family:inherit;overflow-x:auto}.sheet-music.scroll-mode-page[data-v-34e4a83b]{max-height:none;overflow:visible}.sheet-music.scroll-mode-sheet[data-v-34e4a83b]{max-height:70vh;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--primary-color-2, #ff6b6b) #e0e0e0}.sheet-music:hover .note-group[data-v-34e4a83b]{transition:transform .2s ease}.music-line[data-v-34e4a83b]{display:flex;margin-bottom:25px;min-height:50px;align-items:flex-start}.music-line[data-v-34e4a83b]:last-child{justify-content:flex-start}.music-line.standard-mode[data-v-34e4a83b]{display:flex;align-items:flex-start;overflow-x:auto;overflow-y:visible}.music-line.standard-mode.no-wrap[data-v-34e4a83b]{flex-wrap:nowrap!important}.line-content[data-v-34e4a83b]{display:flex;flex-grow:1;align-items:flex-start}.line-content.standard-mode[data-v-34e4a83b]{display:flex;flex-grow:1;align-items:flex-start;flex-wrap:nowrap!important;overflow:visible}.line-content.standard-mode.no-break[data-v-34e4a83b]{white-space:nowrap;flex-shrink:0;min-width:max-content}.line-content.standard-mode.no-break[data-v-34e4a83b]>*{flex-shrink:0;display:inline-flex;vertical-align:top}.line-number[data-v-34e4a83b]{font-size:.8em;color:#6770d6;font-weight:700;margin-right:15px;display:flex;align-items:flex-start;padding-top:.5em;line-height:1;width:30px;flex-shrink:0}.line-start-bar[data-v-34e4a83b]{width:2px;height:40px;background-color:#999;margin-right:8px;margin-top:5px;flex-shrink:0}.line-start-bar-wrapper[data-v-34e4a83b]{display:flex;align-items:center;align-self:stretch;margin-right:8px}.line-start-bar.standard[data-v-34e4a83b]{width:2px;background-color:#999}.note-group-wrapper[data-v-34e4a83b]{display:flex;align-items:flex-start;justify-content:center;flex-shrink:0;box-sizing:border-box}.note-group[data-v-34e4a83b]{display:inline-flex;flex-direction:column;align-items:center;width:100%;box-sizing:border-box;border-radius:10px;transition:box-shadow .15s ease,background .15s ease,transform .15s ease}.note-group.is-current[data-v-34e4a83b]{background:#2563eb24;box-shadow:0 0 0 2px #2563eb66;border-radius:10px;z-index:2}.note-group.is-practice-current[data-v-34e4a83b]{background:#2563eb33;box-shadow:0 0 0 2px #2563eb8c;transform:scale(1.05);z-index:3}.note-group-wrapper[data-v-34e4a83b]{flex-shrink:0!important;display:inline-flex}.filler-group[data-v-34e4a83b]{position:relative;min-height:40px;width:100%;display:flex;align-items:center;justify-content:center}.filler-group[data-v-34e4a83b]:after{content:"·";color:#ccc;font-size:1.5em;font-weight:700;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.play-indicator[data-v-34e4a83b]{position:absolute;width:3px;background:var(--danger-color, #ff6b6b);border-radius:2px;transform:translate(-50%);opacity:0;transition:all .1s ease-out;z-index:10;pointer-events:none}.play-indicator.is-practice[data-v-34e4a83b]{width:4px;background:var(--accent, #2563eb);box-shadow:0 0 10px #2563eb8c}.controls[data-v-34e4a83b]{text-align:center;margin-top:20px}.control-btn[data-v-34e4a83b]{background:var(--accent, #2563eb);color:#fff;border:none;padding:12px 25px;border-radius:12px;font-size:1em;cursor:pointer;transition:background .2s ease;box-shadow:none}.control-btn[data-v-34e4a83b]:hover{background:var(--accent-hover, #1d4ed8)}.bar-line-wrapper[data-v-34e4a83b]{flex-shrink:0!important;display:inline-flex;align-items:center;padding:5px}.bar-line[data-v-34e4a83b]{width:1.5px;background-color:#bbb}@media (max-width: 768px){.sheet-container[data-v-34e4a83b]{margin-left:0!important;cursor:default}.song-header[data-v-34e4a83b]{flex-direction:column;align-items:stretch;gap:12px}.song-details[data-v-34e4a83b]{min-width:0}.view-mode-toggle[data-v-34e4a83b]{align-self:flex-start}.mode-toggle-btn[data-v-34e4a83b]{padding:8px 16px;font-size:13px}.sheet-music[data-v-34e4a83b]{padding:15px;margin:10px 0}.sheet-music.is-staff-mode[data-v-34e4a83b]{padding:8px 10px}.song-info[data-v-34e4a83b]{padding:15px 20px;margin-bottom:15px}.music-line[data-v-34e4a83b]{margin-bottom:20px}.line-number[data-v-34e4a83b]{width:25px;margin-right:10px;font-size:.7em}.line-start-bar[data-v-34e4a83b]{margin-right:6px}.note-group[data-v-34e4a83b]{padding:8px;margin:-8px}.music-line.standard-mode[data-v-34e4a83b]{overflow-x:auto;-webkit-overflow-scrolling:touch}.line-content.standard-mode.no-break[data-v-34e4a83b]{padding-right:10px}}@media (max-width: 480px){.sheet-music[data-v-34e4a83b]{padding:10px;border-radius:10px}.song-info h3[data-v-34e4a83b]{font-size:1.2em}.music-line[data-v-34e4a83b]{margin-bottom:15px}.line-number[data-v-34e4a83b]{width:20px;margin-right:8px;font-size:.6em}.line-start-bar[data-v-34e4a83b]{margin-right:1px}}.notification[data-v-be98584a]{position:fixed;top:20px;right:20px;padding:15px 25px;border-radius:10px;color:#fff;font-weight:700;z-index:9999;box-shadow:0 4px 12px #00000026;transition:all .3s ease-in-out}.notification.success[data-v-be98584a]{background:#51cf66}.notification.error[data-v-be98584a]{background:#ff6b6b}.notification.info[data-v-be98584a]{background:#339af0;max-width:min(420px,calc(100vw - 40px));font-weight:600;line-height:1.45}.fade-enter-active[data-v-be98584a],.fade-leave-active[data-v-be98584a]{transition:opacity .3s,transform .3s}.fade-enter-from[data-v-be98584a],.fade-leave-to[data-v-be98584a]{opacity:0;transform:translateY(-20px)}.search-container[data-v-121c6d66]{position:fixed;top:20px;right:20px;z-index:2000}.search-icon[data-v-121c6d66]{width:44px;height:44px;background:var(--surface, #fff);border-radius:50%;display:flex;justify-content:center;align-items:center;cursor:pointer;box-shadow:0 2px 10px #00000014;border:1px solid var(--border, #e5e7eb);transition:all .2s ease-in-out;color:var(--text-muted, #6b7280)}.search-icon[data-v-121c6d66]:hover{transform:scale(1.05);color:var(--accent, #2563eb);border-color:var(--accent, #2563eb)}.search-box[data-v-121c6d66]{position:absolute;top:-5px;right:-5px;width:380px;padding:15px;background:#fffffff5;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border, #e5e7eb);border-radius:14px;box-shadow:0 8px 30px #00000014;display:flex;flex-direction:column}.search-input-wrapper[data-v-121c6d66]{display:flex;gap:10px;margin-bottom:15px}.search-box input[data-v-121c6d66]{flex-grow:1;padding:10px 15px;border:1px solid #ddd;border-radius:50px;font-size:16px;outline:none;transition:border-color .2s}.search-box input[data-v-121c6d66]:focus{border-color:var(--primary-color-1)}.search-button[data-v-121c6d66]{padding:0 20px;border-radius:50px;background:var(--accent, #2563eb);color:#fff;border:none;font-size:16px;cursor:pointer;transition:transform .2s}.search-button[data-v-121c6d66]:hover{transform:scale(1.05)}.results-wrapper[data-v-121c6d66]{max-height:350px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--primary-color-2) #e0e0e0}.search-results ul[data-v-121c6d66]{list-style:none}.search-results li[data-v-121c6d66]{display:flex;justify-content:space-between;align-items:center;padding:12px 5px;border-bottom:1px solid #eee;gap:10px}.sheet-info[data-v-121c6d66]{display:flex;flex-direction:column;gap:2px;flex-grow:1;min-width:0}.sheet-name[data-v-121c6d66]{font-weight:700;color:#333;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sheet-author[data-v-121c6d66]{font-size:13px;color:#777}.sheet-meta[data-v-121c6d66]{display:flex;align-items:center;gap:10px;flex-shrink:0}.sheet-size[data-v-121c6d66]{font-size:12px;color:#999;background:#f0f0f0;padding:2px 6px;border-radius:10px}.open-btn[data-v-121c6d66]{padding:6px 14px;border-radius:50px;background:var(--accent, #2563eb);color:#fff;border:none;font-size:12px;cursor:pointer;transition:background-color .2s}.open-btn[data-v-121c6d66]:hover{background-color:var(--accent-hover, #1d4ed8)}.feedback-message[data-v-121c6d66]{text-align:center;padding:40px 0;color:#888}.results-title[data-v-121c6d66]{font-size:14px;font-weight:700;color:#555;margin-top:10px;margin-bottom:10px;padding-left:5px}.search-history[data-v-121c6d66],.recent-section[data-v-121c6d66]{margin-bottom:15px}.search-history.under-input[data-v-121c6d66]{margin-bottom:12px}.history-title[data-v-121c6d66]{display:flex;justify-content:space-between;align-items:center;font-size:14px;font-weight:700;color:#555;margin-bottom:8px;padding:0 5px}.clear-btn[data-v-121c6d66]{background:none;border:none;cursor:pointer;font-size:12px;color:#888;opacity:.8;transition:opacity .2s}.clear-btn[data-v-121c6d66]:hover{opacity:1;color:#555}.history-tags[data-v-121c6d66]{display:flex;flex-wrap:wrap;gap:8px;padding:0 2px 4px}.history-tag[data-v-121c6d66]{display:inline-flex;align-items:center;gap:4px;max-width:100%;padding:5px 6px 5px 10px;border:1px solid var(--border, #e5e7eb);border-radius:999px;background:#f9fafb;color:#374151;font-size:12px;cursor:pointer;transition:border-color .15s,background .15s}.history-tag[data-v-121c6d66]:hover{border-color:var(--accent, #2563eb);background:#eff6ff;color:var(--accent, #2563eb)}.tag-text[data-v-121c6d66]{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:160px}.tag-remove[data-v-121c6d66]{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:50%;font-size:14px;line-height:1;color:#9ca3af}.tag-remove[data-v-121c6d66]:hover{background:#0000000f;color:#111827}.sheet-rank[data-v-121c6d66]{flex-shrink:0}.rank-badge[data-v-121c6d66]{display:inline-block;width:22px;height:22px;line-height:22px;text-align:center;border-radius:5px;font-weight:700;color:#fff;background-color:#ccc}.rank-badge.rank-1[data-v-121c6d66]{background-color:#1f2937}.rank-badge.rank-2[data-v-121c6d66]{background-color:#4b5563}.rank-badge.rank-3[data-v-121c6d66]{background-color:#9ca3af;color:#fff}.slide-fade-enter-active[data-v-121c6d66],.slide-fade-leave-active[data-v-121c6d66]{transition:all .3s cubic-bezier(.4,0,.2,1)}.slide-fade-enter-from[data-v-121c6d66],.slide-fade-leave-to[data-v-121c6d66]{transform:translate(20px,-20px) scale(.95);opacity:0}.settings-panel[data-v-cf1daba9]{position:absolute;right:0;top:0;width:300px;height:100%;z-index:30;background:#fffffff2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:0 15px 15px 0;overflow-y:auto;box-shadow:-5px 0 20px #0003;animation:slideIn-cf1daba9 .3s ease}@keyframes slideIn-cf1daba9{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.settings-header[data-v-cf1daba9]{display:flex;justify-content:space-between;align-items:center;padding:20px;border-bottom:1px solid rgba(0,0,0,.1)}.settings-header h4[data-v-cf1daba9]{margin:0;color:#333;font-size:1.2em;font-weight:600}.close-btn[data-v-cf1daba9]{width:30px;height:30px;border:none;border-radius:50%;background:#0000001a;color:#666;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.close-btn[data-v-cf1daba9]:hover{background:#0003;transform:scale(1.1)}.settings-content[data-v-cf1daba9]{padding:20px}.setting-group[data-v-cf1daba9]{margin-bottom:25px}.setting-group label[data-v-cf1daba9]{display:block;margin-bottom:10px;color:#333;font-weight:500;font-size:.95em}.instrument-grid[data-v-cf1daba9]{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.instrument-option[data-v-cf1daba9]{display:flex;flex-direction:column;align-items:center;padding:12px 8px;border:2px solid rgba(0,0,0,.1);border-radius:10px;cursor:pointer;transition:all .2s ease;background:#ffffff80}.instrument-option[data-v-cf1daba9]:hover{border-color:#667eea80;transform:translateY(-2px)}.instrument-option.active[data-v-cf1daba9]{border-color:#ff9a56;background:#667eea1a}.instrument-icon[data-v-cf1daba9]{font-size:1.5em;margin-bottom:5px}.instrument-name[data-v-cf1daba9]{font-size:.8em;text-align:center;color:#555;font-weight:500}.pitch-control[data-v-cf1daba9]{background:#ffffff80;border-radius:10px;padding:15px}.pitch-display[data-v-cf1daba9]{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.current-pitch[data-v-cf1daba9]{font-size:1.5em;font-weight:700;color:#ff9a56}.pitch-offset[data-v-cf1daba9]{font-size:1em;color:#666;font-weight:500}.pitch-slider-container[data-v-cf1daba9]{position:relative;margin-bottom:10px}.pitch-slider[data-v-cf1daba9]{width:100%;height:8px;border-radius:4px;background:linear-gradient(to right,#ff6b6b,#ffd93d,#6bcf7f);outline:none;cursor:pointer}.pitch-slider[data-v-cf1daba9]::-webkit-slider-thumb{appearance:none;width:20px;height:20px;border-radius:50%;background:#fff;border:3px solid #ff9a56;cursor:pointer;box-shadow:0 2px 8px #0003}.pitch-markers[data-v-cf1daba9]{position:absolute;top:-15px;left:0;right:0;display:flex;justify-content:space-between;pointer-events:none}.pitch-marker[data-v-cf1daba9]{color:#ccc;font-size:.8em}.pitch-labels[data-v-cf1daba9]{display:flex;justify-content:space-between;font-size:.8em;color:#666}.size-control[data-v-cf1daba9]{display:flex;align-items:center;gap:15px}.size-slider[data-v-cf1daba9]{flex:1;height:6px;border-radius:3px;background:#ddd;outline:none;cursor:pointer}.size-slider[data-v-cf1daba9]::-webkit-slider-thumb{appearance:none;width:18px;height:18px;border-radius:50%;background:#ff9a56;cursor:pointer;box-shadow:0 2px 6px #0003}.size-preview[data-v-cf1daba9]{display:flex;align-items:center;justify-content:center;width:60px;height:50px}.preview-key[data-v-cf1daba9]{background:linear-gradient(135deg,#ff9a56,#ff6b6b);border-radius:8px;transition:all .2s ease}.background-options[data-v-cf1daba9]{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.bg-option[data-v-cf1daba9]{display:flex;flex-direction:column;align-items:center;padding:10px;border:2px solid rgba(0,0,0,.1);border-radius:10px;cursor:pointer;transition:all .2s ease}.bg-option[data-v-cf1daba9]:hover{border-color:#667eea80;transform:translateY(-2px)}.bg-option.active[data-v-cf1daba9]{border-color:#ff9a56;background:#667eea1a}.bg-preview[data-v-cf1daba9]{width:40px;height:30px;border-radius:5px;margin-bottom:5px;border:1px solid rgba(0,0,0,.1)}.default-bg[data-v-cf1daba9]{background:linear-gradient(135deg,#ff9a56,#ff6b6b)}.galaxy-bg[data-v-cf1daba9]{background:linear-gradient(135deg,#191970,#483d8b,#191970)}.ocean-bg[data-v-cf1daba9]{background:linear-gradient(135deg,#0077be,#00b4d8)}.custom-preview[data-v-cf1daba9]{display:flex;align-items:center;justify-content:center;background:#f0f0f0;color:#999;font-size:1.2em;font-weight:700}.bg-option span[data-v-cf1daba9]{font-size:.8em;color:#555;font-weight:500}.reset-btn[data-v-cf1daba9]{width:100%;padding:12px;border:none;border-radius:10px;background:linear-gradient(135deg,#ff6b6b,orange);color:#fff;font-weight:600;cursor:pointer;transition:all .2s ease}.reset-btn[data-v-cf1daba9]:hover{transform:translateY(-2px);box-shadow:0 5px 15px #ff6b6b4d}.sync-control[data-v-cf1daba9]{display:flex;flex-direction:column;gap:8px}.checkbox-label[data-v-cf1daba9]{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:14px;font-weight:500}.checkbox-label input[type=checkbox][data-v-cf1daba9]{width:16px;height:16px;accent-color:#ff9a56}.practice-extra[data-v-cf1daba9]{margin-top:10px;display:flex;flex-direction:column;gap:8px}.loop-actions[data-v-cf1daba9]{display:flex;flex-wrap:wrap;gap:6px;padding-left:2px}.loop-btn[data-v-cf1daba9]{border:1px solid #d5dbe6;background:#f7f9fc;color:#4b5563;border-radius:8px;padding:4px 8px;font-size:12px;cursor:pointer}.loop-btn[data-v-cf1daba9]:hover{border-color:#9db7e8;color:#3b6fd4}.loop-btn.ghost[data-v-cf1daba9]{background:transparent;color:#888}.sync-description[data-v-cf1daba9]{font-size:12px;color:#666;margin:0;padding-left:24px;line-height:1.4}@media (max-width: 768px){.settings-panel[data-v-cf1daba9]{width:280px}.instrument-grid[data-v-cf1daba9],.background-options[data-v-cf1daba9]{grid-template-columns:1fr}}.keyboard-overlay[data-v-0961f7d4]{position:fixed;top:0;left:0;width:100vw;height:100vh;background:transparent;z-index:2000;display:flex;justify-content:center;align-items:center;pointer-events:none}.keyboard-window[data-v-0961f7d4]{position:absolute;display:flex;flex-direction:column;min-width:400px;min-height:300px;border-radius:14px;border:1px solid var(--border, #e5e7eb);box-shadow:0 12px 40px #11182724;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);overflow:hidden;resize:none;-webkit-user-select:none;user-select:none}.keyboard-window[data-v-0961f7d4],.keyboard-mobile[data-v-0961f7d4]{pointer-events:auto}.settings-dismiss[data-v-0961f7d4]{position:absolute;inset:0;z-index:25;background:#0f172a1f;cursor:pointer}.keyboard-header[data-v-0961f7d4],.mobile-header[data-v-0961f7d4]{height:50px;flex-shrink:0;background:#eef1f6;border-bottom:1px solid #dde3ec;display:flex;align-items:center;justify-content:space-between;cursor:grab;touch-action:none;padding:0 14px 0 16px}.keyboard-header[data-v-0961f7d4]:active{cursor:grabbing}.header-title[data-v-0961f7d4]{display:flex;align-items:center;gap:8px;min-width:0}.keyboard-header h3[data-v-0961f7d4],.mobile-header h3[data-v-0961f7d4]{margin:0;color:#3f4b5b;font-size:.95rem;font-weight:650}.practice-badge[data-v-0961f7d4]{flex-shrink:0;font-size:11px;font-weight:650;color:#3b6fd4;background:#3b6fd41f;border-radius:999px;padding:2px 8px}.practice-badge.waiting[data-v-0961f7d4]{color:#9a6b2f;background:#f7efd9}.header-controls[data-v-0961f7d4]{display:flex;gap:8px}.practice-btn[data-v-0961f7d4],.settings-btn[data-v-0961f7d4],.close-btn[data-v-0961f7d4]{width:30px;height:30px;border:1px solid #d5dbe6;border-radius:50%;background:#f7f9fc;color:#6b7788;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s ease}.practice-btn[data-v-0961f7d4]:hover,.settings-btn[data-v-0961f7d4]:hover,.close-btn[data-v-0961f7d4]:hover{color:#3b6fd4;border-color:#9db7e8;background:#eef4ff}.practice-btn.active[data-v-0961f7d4]{background:#5b8def;border-color:#5b8def;color:#fff}.keyboard-area[data-v-0961f7d4]{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:18px;min-height:0}.keys-grid[data-v-0961f7d4]{display:grid;grid-template-columns:repeat(5,var(--key-size, 60px));grid-template-rows:repeat(3,var(--key-size, 60px));gap:var(--key-gap, 8px);width:max-content;max-width:100%}.key-button[data-v-0961f7d4]{position:relative;border:1px solid #d5dce8;border-radius:var(--key-radius, 12px);background:#e8edf5;cursor:pointer;-webkit-user-select:none;user-select:none;transition:background .15s ease,box-shadow .15s ease,border-color .15s ease;display:flex;align-items:center;justify-content:center;perspective:1000px;transform-style:preserve-3d;flex-shrink:0}.key-button[data-v-0961f7d4]:hover{background:#dde5f0}.key-button.pressed[data-v-0961f7d4]{background:#d5e4fb;border-color:#7aa4e8}.key-inner[data-v-0961f7d4]{width:100%;height:100%;position:relative;display:flex;align-items:center;justify-content:center}.key-glow[data-v-0961f7d4]{position:absolute;width:var(--glow-size, 56%);height:var(--glow-size, 56%);border-radius:inherit;background:transparent;border:var(--glow-border, 2px) solid #b7c2d4;opacity:1;transition:all .2s ease;box-sizing:border-box}.key-button.pressed .key-glow[data-v-0961f7d4],.key-button.animating .key-glow[data-v-0961f7d4]{border-color:#7aa4e8;box-shadow:0 0 10px #5a8cdc47}.key-button.highlighted[data-v-0961f7d4]{background:#ff9a56;border-color:#e67a35;box-shadow:0 0 0 3px #ff9a5673,0 4px 14px #e67a3559;animation:highlight-pulse-0961f7d4 1s ease-in-out infinite;z-index:2}.key-button.highlighted .key-glow[data-v-0961f7d4]{border-color:#ffffffd9}.key-button.highlighted .octave-dot[data-v-0961f7d4],.key-button.partial .octave-dot[data-v-0961f7d4],.key-button.feedback-correct .octave-dot[data-v-0961f7d4]{background:#fff}.key-button.partial[data-v-0961f7d4]{background:#6fbf93;border-color:#4ea87a}.key-button.partial .key-glow[data-v-0961f7d4]{border-color:#ffffffd9}.key-button.feedback-correct[data-v-0961f7d4]{background:#6fbf93!important;border-color:#4ea87a!important;box-shadow:0 0 12px #50aa7866}.key-button.feedback-wrong[data-v-0961f7d4]{background:#e89696!important;border-color:#d66!important;box-shadow:0 0 12px #c8646459;animation:wrong-shake-0961f7d4 .22s ease}@keyframes highlight-pulse-0961f7d4{0%,to{box-shadow:0 0 0 3px #ff9a5666,0 4px 12px #e67a354d}50%{box-shadow:0 0 0 5px #ff9a568c,0 6px 18px #e67a3566}}@keyframes wrong-shake-0961f7d4{0%,to{transform:translate(0)}30%{transform:translate(-3px)}70%{transform:translate(3px)}}.key-circle .key-glow[data-v-0961f7d4]{border-radius:50%}.key-square .key-glow[data-v-0961f7d4]{border-radius:8px}.key-diamond .key-glow[data-v-0961f7d4],.key-diamond-circle .key-glow[data-v-0961f7d4]{border-radius:8px;transform:rotate(45deg)}.key-diamond-circle .key-glow[data-v-0961f7d4]:after{content:"";position:absolute;top:50%;left:50%;width:90%;height:90%;background:transparent;border:var(--glow-border, 2px) solid #c4a35a;border-radius:50%;transform:translate(-50%,-50%);box-sizing:border-box}.key-label[data-v-0961f7d4]{position:absolute;inset:0;z-index:2;pointer-events:none}.key-number[data-v-0961f7d4]{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);color:#4b5563;font-weight:600;font-size:var(--key-font, 16px);font-variant-numeric:tabular-nums;font-family:Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;line-height:1}.octave-dots[data-v-0961f7d4]{position:absolute;left:50%;top:50%;transform:translate(-50%,calc(-50% - var(--dot-lift, 12px)));display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:2px}.octave-dot[data-v-0961f7d4]{display:block;width:var(--dot-size, 4px);height:var(--dot-size, 4px);border-radius:50%;background:#5a6578;flex-shrink:0}.key-button.highlighted .key-number[data-v-0961f7d4],.key-button.partial .key-number[data-v-0961f7d4],.key-button.feedback-correct .key-number[data-v-0961f7d4]{color:#fff;font-weight:600}.keyboard-mobile[data-v-0961f7d4]{width:100vw;height:100vh;background:#f3f5f9;display:flex;flex-direction:column;transform:rotate(90deg);transform-origin:center}.mobile-keyboard[data-v-0961f7d4]{flex:1;padding:20px}.resize-handles[data-v-0961f7d4]{position:absolute;bottom:0;right:0;width:20px;height:20px}.resize-handle[data-v-0961f7d4]{position:absolute;background:#ffffff4d;cursor:se-resize;touch-action:none}.resize-se[data-v-0961f7d4]{bottom:0;right:0;width:20px;height:20px;border-radius:15px 0}.resize-se[data-v-0961f7d4]:after{content:"";position:absolute;bottom:3px;right:3px;width:0;height:0;border-left:8px solid transparent;border-bottom:8px solid rgba(255,255,255,.6)}@media (max-width: 768px){.mobile-header h3[data-v-0961f7d4]{font-size:1em}.keys-grid[data-v-0961f7d4]{gap:6px}}@media (orientation: landscape) and (max-width: 768px){.keyboard-mobile[data-v-0961f7d4]{transform:none}.mobile-key[data-v-0961f7d4]{min-width:60px;min-height:60px}}.root-container{min-height:100vh}.main-container{position:relative;min-height:100vh}.content-area{min-height:100vh;padding:20px 40px;background:var(--page-bg, #f7f7f5);transition:all .3s cubic-bezier(.25,.8,.25,1);margin-left:var(--sidebar-width);width:calc(100vw - var(--sidebar-width));box-sizing:border-box;position:relative;z-index:1}.header{text-align:left;margin-bottom:24px;color:var(--text, #1a1a1a)}.header h1{font-size:clamp(1.6rem,3vw,2rem);margin-bottom:6px;font-weight:650;letter-spacing:-.02em;text-shadow:none}.header p{font-size:.95rem;color:var(--text-muted, #6b7280);font-weight:400;opacity:1}.workspace-header{margin-bottom:16px}.workspace-bar{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.back-library-btn{border:1px solid var(--border, #e5e7eb);background:var(--surface, #fff);color:var(--text, #1a1a1a);border-radius:999px;padding:8px 14px;font-size:13px;cursor:pointer}.back-library-btn:hover{border-color:var(--accent, #2563eb);color:var(--accent, #2563eb)}.workspace-title{display:flex;flex-direction:column;gap:2px;min-width:0}.workspace-title strong{font-size:1.05rem;color:var(--text, #1a1a1a)}.workspace-title span{font-size:.85rem;color:var(--text-muted, #6b7280)}.drop-overlay{position:absolute;inset:0;background:#2563eb1f;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1500;display:flex;justify-content:center;align-items:center;border:2px dashed var(--accent, #2563eb);border-radius:16px;margin:20px 40px}.drop-overlay-text{color:var(--text, #1a1a1a);text-align:center;font-size:1.25em;text-shadow:none}.drop-overlay-text h3{margin:0;font-weight:600}.fade-enter-active,.fade-leave-active{transition:opacity .3s ease}.fade-enter-from,.fade-leave-to{opacity:0}@media (min-width: 769px){.sidebar{position:fixed;z-index:1000}.content-area{margin-left:var(--sidebar-width);width:calc(100vw - var(--sidebar-width))}}@media (max-width: 768px){.sidebar{position:fixed;z-index:1000;width:280px}.content-area{margin-left:0!important;width:100%!important;padding:15px 20px}.header h1{font-size:2em}.header p{font-size:1em}.drop-overlay{margin:15px 20px}.drop-overlay-text{font-size:1.2em}.sidebar:not(.collapsed){z-index:1001}}@media (max-width: 480px){.content-area{padding:10px 15px}.header h1{font-size:1.8em}.header{margin-bottom:20px}.drop-overlay{margin:10px 15px}.drop-overlay-text{font-size:1.1em}}.content-area{width:100%;box-sizing:border-box}*{box-sizing:border-box}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:#f3f4f6;border-radius:4px}::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#9ca3af}:root{--bg-blur: 0px;--custom-bg-image: none;--page-bg: #f7f7f5;--surface: #ffffff;--surface-hover: #f3f4f6;--border: #e5e7eb;--text: #111827;--text-muted: #6b7280;--accent: #2563eb;--accent-hover: #1d4ed8;--accent-soft: rgba(37, 99, 235, .12);--primary-gradient: none;--primary-color-1: #2563eb;--primary-color-2: #1d4ed8;--danger-color: #dc2626;--success-color: #16a34a;--note-text-color: #ffffff;--sheet-bg-color: rgba(255, 255, 255, 1);--sidebar-width: 300px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,PingFang SC,Microsoft YaHei,-apple-system,BlinkMacSystemFont,Helvetica Neue,Arial,sans-serif;min-height:100vh;background-color:var(--page-bg);color:var(--text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{min-height:100vh}.main-container{display:flex;min-height:100vh}.content-area{flex:1;margin-left:var(--sidebar-width);width:calc(100% - var(--sidebar-width));padding:25px 40px;display:flex;flex-direction:column;position:relative;overflow:visible;background:var(--page-bg);transition:margin-left .3s cubic-bezier(.25,.8,.25,1),width .3s cubic-bezier(.25,.8,.25,1);isolation:isolate}.content-area:before{content:"";position:absolute;inset:0;z-index:0;background-image:var(--custom-bg-image);background-size:cover;background-position:center;background-repeat:no-repeat;filter:blur(var(--bg-blur, 0px));transform:scale(1.04);pointer-events:none}.content-area>*{position:relative;z-index:1}.header{text-align:left;color:var(--text);margin-bottom:24px;text-shadow:none}.header h1{font-size:2rem;margin-bottom:8px;font-weight:650}.header p{font-size:1rem;color:var(--text-muted)}.sidebar{width:var(--sidebar-width);background:#fffffff7;padding:20px;box-shadow:3px 0 15px #0000001a;overflow-y:auto;position:fixed;height:100vh;z-index:1000;display:flex;flex-direction:column;transition:transform .3s cubic-bezier(.25,.8,.25,1)}.sidebar.collapsed{transform:translate(-100%)}.sidebar.collapsed~.content-area,.content-area[data-sidebar-collapsed=true]{--sidebar-width: 0px;margin-left:0;width:100vw}.sidebar h2{color:#333;margin-bottom:20px;text-align:center;font-size:1.5em}.upload-section,.settings-panel,.player-panel{margin-bottom:25px;border-bottom:1px solid #e0e0e0;padding-bottom:25px}.sidebar>*:last-child{border-bottom:none}.upload-area{border:2px dashed var(--primary-color-1);border-radius:12px;padding:25px 20px;text-align:center;cursor:pointer;transition:all .3s cubic-bezier(.25,.8,.25,1)}.upload-area:hover,.upload-area.dragover{border-color:var(--primary-color-2);background:#667eea0d;transform:translateY(-2px)}.upload-area h4{color:#333;margin-bottom:8px}.upload-area p{color:#777;font-size:12px}.file-input{display:none}.sidebar-footer{text-align:center;font-size:12px;color:#aaa;margin-top:auto;padding-top:20px}.sheet-container{width:100%}.song-info{background:#fffffff2;border-radius:15px;padding:20px 25px;margin-bottom:20px;box-shadow:0 4px 15px #0000000d}.song-info h3{font-size:1.4em}.sheet-music{border:1px solid #e0e0e0;border-radius:15px;padding:25px;margin:20px 0;font-family:Courier New,monospace;position:relative;overflow-y:auto;max-height:65vh;background-color:rgba(var(--sheet-bg-color-rgb),var(--sheet-bg-alpha));box-shadow:0 8px 30px #0000001a}.sheet-music .music-line{display:flex;flex-wrap:nowrap;align-items:flex-end;margin-bottom:20px;min-height:50px;justify-content:space-between}.sheet-music .music-line:last-child{justify-content:flex-start}.sheet-music.scroll-mode-page{max-height:none;overflow-y:visible}.sheet-music.scroll-mode-sheet{max-height:70vh;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--primary-color-2) #e0e0e0}.line-number{font-size:.8em;color:#ccc;font-weight:700;align-self:flex-start;padding-top:.5em;margin-right:15px}.note-group-wrapper{display:flex;align-items:center}.note-group{display:inline-flex;flex-direction:column;align-items:flex-start}.rhythm-marker{color:var(--rhythm-marker-color);font-size:1.5em;font-weight:700;align-self:center;-webkit-user-select:none;user-select:none;margin:0 5px}.play-indicator{position:absolute;width:3px;background:var(--danger-color);border-radius:2px;transform:translate(-50%);opacity:0;transition:all .1s ease-out;z-index:10;pointer-events:none}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#ffffff1a;border:3px dashed rgba(255,255,255,.3);border-radius:20px;min-height:400px;color:#fff}.setting-group{margin-bottom:15px;font-size:14px}.setting-group h4{margin-bottom:15px;font-size:1.1em;color:#444}.setting-group label{display:block;margin-bottom:8px;font-weight:600;color:#555}.setting-group select,.setting-group input[type=range]{width:100%}.toggle-group label{display:inline-flex;align-items:center;margin-right:15px;font-weight:400;cursor:pointer}.toggle-group input[type=checkbox]{margin-right:5px}input[type=color]{vertical-align:middle;margin-left:8px;border:1px solid #ddd;border-radius:5px;width:30px;height:30px;cursor:pointer}select{padding:8px;border-radius:8px;border:1px solid #ccc;background-color:#f9f9f9;transition:border-color .2s}select:focus{outline:none;border-color:var(--primary-color-1)}.control-btn,.upload-btn-style{background:var(--accent, #2563eb);color:#fff;border:none;padding:12px 25px;border-radius:50px;font-size:1em;font-weight:600;cursor:pointer;transition:all .3s cubic-bezier(.25,.8,.25,1);box-shadow:0 2px 5px #00000014}.control-btn:hover,.upload-btn-style:hover{background:var(--accent-hover, #1d4ed8);color:#fff;transform:translateY(-2px);box-shadow:0 4px 10px #2563eb40}.upload-area .upload-btn-style{padding:8px 20px;font-size:14px}button.reset-btn{width:100%;padding:10px;background:#f67280;color:#fff;border:none;border-radius:8px;cursor:pointer;margin-top:10px;transition:background .2s}button.reset-btn:hover{background:#d64555}.player-btn{background:var(--primary-gradient);color:#fff;border:none;padding:8px 15px;border-radius:50px;margin:0 5px;cursor:pointer;font-size:12px;transition:all .2s}.player-btn:hover{transform:scale(1.05)}.progress-bar{width:100%;height:8px;background:#e0e0e0;border-radius:4px;cursor:pointer;margin:15px 0}.progress-fill{height:100%;background:var(--primary-gradient);border-radius:4px;width:0%;transition:width .1s linear}@media (max-width: 768px){.main-container{flex-direction:column}.content-area{margin-left:0;width:100%;padding:15px}.sidebar{position:relative;width:100%;height:auto;box-shadow:none}}