:root{--bg: #0d1117;--panel: #161b22;--panel-2: #1c232c;--border: #2d333b;--text: #e6edf3;--muted: #8b949e;--accent: #326ce5;--green: #3fb950;--amber: #d29922;--red: #f85149;--mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;--sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:var(--sans);font-size:14px}.app{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;align-items:center;gap:12px;padding:10px 18px;background:var(--panel);border-bottom:1px solid var(--border)}.topbar .logo{font-size:26px;color:var(--accent)}.topbar-title{font-weight:700;font-size:16px}.topbar-sub{color:var(--muted);font-size:12px}.layout{display:grid;grid-template-columns:360px 1fr 460px;gap:1px;background:var(--border);flex:1;min-height:0}@media (max-width: 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