:root{--bg: #0b1315;--bg-2: #112024;--panel: #14282d;--panel-2: #1a3238;--line: #27454d;--text: #deefe4;--muted: #8db0a4;--buy: #59d18c;--sell: #ff7a66;--accent: #f2c45a}*{box-sizing:border-box}body{margin:0;font-family:Avenir Next,Segoe UI,sans-serif;background:radial-gradient(1200px 600px at 20% 0%,#17363b,var(--bg));color:var(--text)}.app-shell{min-height:100vh;display:grid;grid-template-columns:260px 1fr 360px;gap:14px;padding:14px}.left-pane,.right-pane,.main-pane{border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,var(--panel),var(--bg-2))}.left-pane{padding:14px;display:flex;flex-direction:column;overflow:hidden}.brand{font-size:28px;font-weight:700;letter-spacing:.5px}.subtitle,.api-hint{color:var(--muted);font-size:12px;margin-top:4px}.timeframe-switch{display:flex;gap:8px;margin:18px 0 12px}.timeframe-switch.top{margin:0}.tf-btn{border:1px solid var(--line);background:#1d353b;color:var(--text);border-radius:8px;padding:8px 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