:root{--primary:#6366f1;--primary-light:#818cf8;--primary-lighter:#a5b4fc;--primary-bg:#eef2ff;--success:#10b981;--success-bg:#ecfdf5;--warning:#f59e0b;--error:#ef4444;--error-bg:#fef2f2;--text:#1e293b;--text-secondary:#64748b;--text-muted:#94a3b8;--border:#e2e8f0;--bg:#f8fafc;--white:#fff}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--text);background:linear-gradient(135deg,#f0f4ff 0%,#faf5ff 50%,#fdf2f8 100%);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;line-height:1.6}#app{width:100%}.container[data-v-5000f98a]{max-width:800px;margin:0 auto;padding:40px 20px 60px}.header[data-v-5000f98a]{text-align:center;margin-bottom:40px}.logo[data-v-5000f98a]{justify-content:center;align-items:center;gap:10px;margin-bottom:12px;display:flex}.logo 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h3[data-v-5000f98a]{color:#1e293b;margin-bottom:8px;font-size:18px}.processing-hint[data-v-5000f98a]{color:#94a3b8;margin-bottom:24px;font-size:13px}.progress-bar[data-v-5000f98a]{background:#e2e8f0;border-radius:3px;width:100%;height:6px;margin-bottom:12px;overflow:hidden}.progress-fill[data-v-5000f98a]{background:linear-gradient(90deg,#6366f1,#8b5cf6);border-radius:3px;width:0%;height:100%;transition:width .5s}.processing-status[data-v-5000f98a]{color:#64748b;font-size:13px}.result-section[data-v-5000f98a]{background:#fff;border-radius:12px;margin-bottom:24px;padding:32px;box-shadow:0 4px 6px #00000012,0 2px 4px #0000000f}.result-title[data-v-5000f98a]{color:#10b981;align-items:center;gap:8px;margin-bottom:20px;font-size:20px;font-weight:700;display:flex}.result-title[data-v-5000f98a]:before{content:"";background:#10b981;border-radius:50%;width:8px;height:8px;display:inline-block}.original-player[data-v-5000f98a]{background:#f8fafc;border-radius:8px;margin-bottom:24px;padding:16px}.original-player h4[data-v-5000f98a]{color:#64748b;margin-bottom:8px;font-size:13px;font-weight:500}.original-player audio[data-v-5000f98a]{width:100%;height:36px}.stems-grid[data-v-5000f98a]{flex-direction:column;gap:12px;display:flex}.stem-card[data-v-5000f98a]{background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;align-items:center;gap:16px;padding:18px 20px;transition:all .2s;display:flex}.stem-card[data-v-5000f98a]:hover{border-color:#a5b4fc;box-shadow:0 1px 2px #0000000d}.stem-icon[data-v-5000f98a]{border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.stem-icon.vocals[data-v-5000f98a]{background:#fef2f2}.stem-icon.accompaniment[data-v-5000f98a]{background:#eff6ff}.stem-icon.drums[data-v-5000f98a]{background:#fefce8}.stem-icon.bass[data-v-5000f98a]{background:#f0fdf4}.stem-icon.piano[data-v-5000f98a]{background:#faf5ff}.stem-icon.other[data-v-5000f98a]{background:#f8fafc}.stem-info[data-v-5000f98a]{flex:1;min-width:0}.stem-name[data-v-5000f98a]{color:#1e293b;margin-bottom:2px;font-size:15px;font-weight:600}.stem-type[data-v-5000f98a]{color:#94a3b8;font-size:12px}.stem-actions[data-v-5000f98a]{flex-shrink:0;gap:8px;display:flex}.stem-actions audio[data-v-5000f98a]{width:200px;height:32px}.btn-download[data-v-5000f98a]{color:#fff;cursor:pointer;white-space:nowrap;background:#6366f1;border:none;border-radius:6px;align-items:center;gap:6px;padding:8px 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