:root{--bg: #0f172a;--surface: #1e293b;--border: #334155;--green: #22c55e;--red: #ef4444;--yellow: #f59e0b;--blue: #3b82f6;--text: #f1f5f9;--muted: #94a3b8}*{box-sizing:border-box;margin:0;padding:0}body{font-family:system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;font-size:15px}.app{display:flex;flex-direction:column;min-height:100vh}main{flex:1;max-width:1100px;margin:0 auto;width:100%;padding:28px 20px}.navbar{background:var(--surface);border-bottom:1px solid var(--border);padding:0 20px;display:flex;align-items:center;height:56px;gap:4px;position:sticky;top:0;z-index:50}.navbar-brand{font-weight:800;font-size:.95rem;color:var(--green);margin-right:12px;letter-spacing:-.02em;flex-shrink:0}.navbar-brand span{color:var(--muted);font-weight:400}.nav-tab{background:none;border:none;color:var(--muted);padding:7px 14px;border-radius:6px;cursor:pointer;font-size:.875rem;font-weight:500;transition:background .15s,color 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1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}