:root{--header-height:72px;--sidebar-width:300px;--bg-base:#0d0d0d;--bg-elevated:#141414;--bg-surface:#1a1a1a;--bg-card:#1f1f1f;--bg-card-hover:#252525;--bg-input:#181818;--bg-preview:#0a0a0a;--border-subtle:rgba(255,255,255,0.06);--border-default:rgba(255,255,255,0.1);--border-strong:rgba(255,255,255,0.16);--text-primary:#f5f5f5;--text-secondary:#a3a3a3;--text-muted:#737373;--accent:#f59e0b;--accent-hover:#fbbf24;--accent-dark:#d97706;--accent-glow:rgba(245,158,11,0.25);--accent-subtle:rgba(245,158,11,0.1);--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--shadow-sm:0 1px 2px rgba(0,0,0,0.4);--shadow-md:0 4px 16px rgba(0,0,0,0.35);--shadow-lg:0 8px 32px rgba(0,0,0,0.45);--shadow-glow:0 0 24px var(--accent-glow);--transition-fast:150ms ease;--transition-base:250ms cubic-bezier(0.4,0,0.2,1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe 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var(--border-subtle);min-height:90px;width:100%}.page-intro{margin-top:6px;font-size:14px;color:var(--text-secondary)}.help-overlay{position:fixed;inset:0;background:rgba(0,0,0,.65);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:3000}.help-highlight{position:absolute;border:2px solid var(--accent);border-radius:var(--radius-md);box-shadow:0 0 0 9999px rgba(0,0,0,.6);pointer-events:none}.help-tooltip{position:absolute;width:300px;background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-md);padding:16px;color:var(--text-primary);z-index:3001;box-shadow:var(--shadow-lg)}.help-tooltip h3{margin:8px 0;font-size:16px}.help-tooltip p{margin:0 0 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