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.black-key.active{background:var(--accent)}.debug-console{display:flex;flex-direction:column}.debug-header{display:flex;align-items:center;justify-content:space-between}.debug-header h2{margin-bottom:0}.debug-log{margin-top:8px;max-height:200px;overflow-y:auto;font-family:JetBrains Mono,Fira Code,monospace;font-size:11px;line-height:1.6;background:var(--bg);border-radius:4px;padding:6px 8px}.debug-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.debug-local{color:var(--accent)}.debug-hw-midi{color:#26c6da}.debug-peer{color:#ab47bc}.debug-state{color:var(--pending)}.debug-session{color:var(--ok)}.latency-mode{margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}.latency-mode-label{font-size:11px;color:var(--text-dim);text-transform:uppercase;letter-spacing:1px;display:block;margin-bottom:6px}.latency-mode-buttons{display:flex;gap:4px}.latency-btn{flex:1;text-align:center;background:var(--bg-input);color:var(--text-dim);border:1px solid var(--border);transition:background .15s,color .15s,border-color .15s}.latency-btn:hover{background:#303050}.latency-btn.active{background:var(--accent);color:#111;border-color:var(--accent)}.sync-mode{margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}.sync-mode-label{font-size:11px;color:var(--text-dim);text-transform:uppercase;letter-spacing:1px;display:block;margin-bottom:6px}.sync-mode-row{display:flex;align-items:center;gap:6px}.sync-slider{flex:1;min-width:0}.sync-slider:disabled{opacity:.3;cursor:not-allowed}.sync-btn{min-width:48px;text-align:center;background:var(--bg-input);color:var(--text-dim);border:1px solid var(--border);transition:background .15s,color .15s,border-color .15s}.sync-btn:hover{background:#303050}.sync-btn.active{background:var(--accent);color:#111;border-color:var(--accent)}.sync-btn:disabled{opacity:.4;cursor:not-allowed}.sync-btn:disabled:hover{background:var(--bg-input)}.sync-delay-display{font-family:JetBrains Mono,Fira Code,monospace;font-size:11px;color:var(--text-dim);white-space:nowrap;min-width:80px}#app.landing-root{display:block;overflow-y:auto;overflow-x:hidden;height:100vh;min-width:0}.landing{min-height:100vh;display:flex;flex-direction:column}.landing-nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background:#0f0f1ae6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.landing-brand{color:var(--accent);font-size:18px;font-weight:700;letter-spacing:2px}.landing-hero{display:flex;align-items:center;justify-content:center;padding:80px 24px 60px;background:linear-gradient(180deg,rgba(79,195,247,.08) 0%,transparent 100%)}.landing-hero-content{text-align:center;max-width:600px}.landing-hero-icon{font-size:48px;margin-bottom:16px}.landing-hero-title{font-size:48px;font-weight:800;color:var(--accent);letter-spacing:3px;margin-bottom:12px}.landing-hero-subtitle{font-size:20px;color:var(--text);margin-bottom:8px}.landing-hero-tagline{font-size:16px;color:var(--text-dim);margin-bottom:32px}.btn-large{padding:14px 32px;font-size:16px;font-weight:700;border-radius:8px;letter-spacing:.5px}.landing-section{max-width:900px;margin:0 auto;padding:48px 24px;width:100%}.landing-section-title{font-size:24px;font-weight:700;color:var(--text);text-align:center;margin-bottom:32px;letter-spacing:1px}.landing-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.landing-step{text-align:center;padding:20px 12px;background:var(--bg-panel);border:1px solid var(--border);border-radius:10px}.landing-step-number{width:36px;height:36px;border-radius:50%;background:var(--accent);color:#111;font-size:18px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;margin-bottom:12px}.landing-step h3{font-size:14px;font-weight:700;color:var(--text);margin-bottom:6px}.landing-step p{font-size:13px;color:var(--text-dim);line-height:1.4}.landing-features{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.landing-card{background:var(--bg-panel);border:1px solid var(--border);border-radius:10px;padding:24px 16px;text-align:center}.landing-card-icon{font-size:32px;margin-bottom:12px}.landing-card h3{font-size:15px;font-weight:700;color:var(--text);margin-bottom:8px}.landing-card p{font-size:13px;color:var(--text-dim);line-height:1.4}.landing-cta{text-align:center;padding-top:40px;padding-bottom:40px;border-top:1px solid var(--border)}.landing-cta-description{font-size:15px;color:var(--text-dim);margin-bottom:24px;max-width:500px;margin-left:auto;margin-right:auto;line-height:1.5}.landing-signin-form{display:flex;align-items:center;justify-content:center;gap:8px;max-width:400px;margin:0 auto}.landing-email-input{flex:1;background:var(--bg-input);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:10px 14px;font-size:14px;outline:none}.landing-email-input:focus{border-color:var(--accent)}.landing-email-input::placeholder{color:var(--text-dim)}.landing-auth-msg{font-size:13px;color:var(--text-dim);margin-top:12px;min-height:20px}.landing-footer{text-align:center;padding:32px 24px;color:var(--text-dim);font-size:13px;border-top:1px solid var(--border);margin-top:auto}@media (max-width: 768px){.landing-hero-title{font-size:32px}.landing-hero-subtitle{font-size:17px}.landing-steps,.landing-features{grid-template-columns:repeat(2,1fr)}.landing-signin-form{flex-direction:column}.landing-email-input{width:100%}}@media (max-width: 480px){.landing-hero{padding:48px 16px 32px}.landing-section{padding:32px 16px}.landing-hero-title{font-size:28px}.landing-steps,.landing-features{grid-template-columns:1fr}}