:root{--bg:#07120d;--panel:#0d2017;--panel2:#122a1e;--line:#2f4b3c;--text:#f4f6f3;--muted:#9fb0a5;--accent:#e7ff65;--radius:14px}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 50% -20%,#214a35 0,#0b1a12 35%,#050b08 100%);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}button,input{font:inherit}button{color:var(--text);background:#183426;border:1px solid #315541;border-radius:9px;padding:.62rem .85rem;cursor:pointer;transition:.18s ease}button:hover{background:#234632;transform:translateY(-1px)}button:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.primary{background:var(--accent);border-color:var(--accent);color:#102014;font-weight:800}.primary:hover{background:#f1ff9b}header{height:78px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #244332;background:rgba(6,17,11,.9);backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border:2px solid var(--accent);border-radius:50%;color:var(--accent);font-weight:900;font-style:italic}.brand h1{margin:0;font-size:1.12rem;letter-spacing:.01em}.brand p{margin:2px 0 0;color:var(--muted);font-size:.75rem}.playback{display:flex;gap:8px}main{display:grid;grid-template-columns:220px minmax(0,1fr);gap:18px;padding:18px;min-height:calc(100vh - 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