:root{color-scheme:dark;--bg: #030712;--bg-accent: rgba(37, 99, 235, .12);--panel: rgba(10, 18, 36, .94);--panel-elevated: rgba(14, 24, 46, .96);--panel-border: rgba(148, 163, 184, .14);--panel-border-strong: rgba(148, 163, 184, .2);--text: #e5e7eb;--muted: #94a3b8;--muted-soft: rgba(148, 163, 184, .74);--accent: #60a5fa;--shadow: 0 24px 70px rgba(0, 0, 0, .35);--resistance: #f87171;--weakening: #fb7185;--flip: #f59e0b;--breakout: #22c55e;--support: #38bdf8;--air: #64748b}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:radial-gradient(circle at top,var(--bg-accent),transparent 32%),linear-gradient(180deg,#071225,#030712);color:var(--text)}button,select{font:inherit}.app-shell{min-height:100vh;padding:16px}.topbar,.panel,.workspace__surface,.workspace-drawer{background:var(--panel);border:1px solid 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