Expand discussion on SAI termination shock risks

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-                                    <strong><i class="bi bi-calculator"></i> Philanthropic Impact Scale:</strong> A <strong>$1 billion/year commitment</strong> could offset roughly <strong>5-10% of current warming</strong> (0.05-0.1°C). However, this must be sustained indefinitely and comes with major governance and side-effect uncertainties that monetary analysis alone cannot capture.
+                                    <strong><i class="bi bi-calculator"></i> Philanthropic Impact Scale:</strong> A <strong>$1 billion/year commitment</strong> could offset roughly <strong>5-10% of current warming</strong> (0.05-0.1°C). While this must be sustained indefinitely, the cost is so low (0.01% of global GDP) that economic termination shock is implausible—any scenario where humanity cannot afford this is already catastrophic for other reasons.
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+                                    <strong><i class="bi bi-lightbulb"></i> Termination Shock Context:</strong> Critics often cite termination shock as a major risk, but the economic math reveals this concern may be overstated. The world economy would need to shrink to <strong>less than $1 trillion</strong> (from current $100+ trillion) before SAI becomes unaffordable—a collapse so severe that rapid warming would be among many catastrophic problems. For perspective: the U.S. alone spent <strong>$5 trillion</strong> on pandemic relief, enough to fund SAI at full scale for <strong>250-500 years</strong>.
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                                 <h4><i class="bi bi-question-circle"></i> Key Criticisms & Unanswered Questions</h4>
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                                     <div class="alert-title"><i class="bi bi-exclamation-octagon"></i> Termination Shock</div>
-                                    <p>What happens if we start SRM and then, decades later, suddenly stop? If SAI were masking, say, 1°C of warming and ceased abruptly, the planet would rapidly "catch up" to where it would have been, potentially warming that 1°C within a decade or even just a few years. That rate of change (a shock of <strong>several tenths of a degree per year</strong>) is many times faster than current climate change, and far beyond what ecosystems or human infrastructure could handle. Once SAI is begun at scale, there is a <strong>strong commitment to continue it</strong> or to very carefully ramp it down over a long period.</p>
+                                    <p><strong>The Risk:</strong> What happens if we start SRM and then, decades later, suddenly stop? If SAI were masking, say, 1°C of warming and ceased abruptly, the planet would rapidly "catch up" to where it would have been, potentially warming that 1°C within a decade or even just a few years. That rate of change (a shock of <strong>several tenths of a degree per year</strong>) is many times faster than current climate change, and far beyond what ecosystems or human infrastructure could handle.</p>
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+                                    <p><strong>Economic Reality Check:</strong> However, this concern must be weighed against SAI's trivial cost. At <strong>$10-20 billion per year</strong> to offset 1°C of warming, the global economy (currently ~$100 trillion/year) would need to collapse by <strong>99.9%</strong> before this became unaffordable. Any scenario where civilization cannot budget 0.01-0.02% of GDP for SAI is likely already catastrophic—making termination shock "a nightmare scenario on top of an existing nightmare," not an independent risk.</p>
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+                                    <p><strong>Historical Precedent:</strong> We're already experiencing mild termination effects. When shipping emissions were cleaned up (IMO 2020) and when the U.S. Clean Air Act reduced SO₂ emissions from 130 million tons/year (1979) to 70 million tons/year (2022), we unmasked warming. The world managed these transitions, demonstrating that gradual adjustments are feasible.</p>
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+                                    <p><strong>Mitigation Strategies:</strong> Termination risk can be managed through: (1) gradual ramp-down over decades rather than abrupt cessation, (2) parallel deployment of CDR to reduce underlying CO₂ levels, (3) international redundancy with multiple deployment nations/actors, and (4) treating SAI as critical infrastructure with budget protection similar to defense or public health. The commitment required is financial (trivial) and political (challenging but manageable), not technical.</p>
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