diff --git a/src/components/features/AccumulationStrategy.tsx b/src/components/features/AccumulationStrategy.tsx
index c94c727..4b07b8d 100644
--- a/src/components/features/AccumulationStrategy.tsx
+++ b/src/components/features/AccumulationStrategy.tsx
@@ -114,7 +114,7 @@ const AccumulationStrategy: React.FC<AccumulationStrategyProps> = ({ profile, se
                     <div className="flex items-center gap-1 bg-slate-100 dark:bg-slate-800 p-1 rounded-lg border border-slate-200 dark:border-slate-700">
                         <button onClick={() => setIsInflationAdjusted(false)} className={`px-4 py-2 text-xs font-bold rounded-md min-h-[36px] transition-colors ${!isInflationAdjusted ? 'bg-white dark:bg-slate-700 text-blue-600 shadow-sm' : 'text-slate-500 hover:text-slate-700'}`}>Nominal</button>
                         <button onClick={() => setIsInflationAdjusted(true)} className={`px-4 py-2 text-xs font-bold rounded-md min-h-[36px] transition-colors ${isInflationAdjusted ? 'bg-white dark:bg-slate-700 text-blue-600 shadow-sm' : 'text-slate-500 hover:text-slate-700'}`}>Adj Inflation's $</button>
-                        <Tooltip content="Shows future portfolio balances adjusted for inflation (Today's Purchasing Power) versus unadjusted Nominal values." className="mr-1" />
+                        <Tooltip content="Clarifies the difference between the 'face value' of the portfolio in the future vs. its equivalent value in today's economy." className="mr-1" />
                     </div>
                 </div>
                 <div className="flex flex-col sm:flex-row gap-6 items-center">
diff --git a/src/components/features/FireAnalysis.tsx b/src/components/features/FireAnalysis.tsx
index 0f6fcc7..9445811 100644
--- a/src/components/features/FireAnalysis.tsx
+++ b/src/components/features/FireAnalysis.tsx
@@ -335,11 +335,11 @@ const FireAnalysis: React.FC<FireAnalysisProps> = ({ profile, isDarkMode }) => {
                                             <div className="flex items-center justify-between mb-1">
                                                 <h4 className="text-lg font-bold text-slate-900 dark:text-white flex items-center gap-2">
                                                     {milestone.type} FIRE
-                                                    {milestone.type === 'Lean' && <Tooltip content="Goal: Minimalist living expenses covered." className="ml-1" />}
+                                                    {milestone.type === 'Lean' && <Tooltip content="You have enough to cover basic living expenses, but with little room for luxury." className="ml-1" />}
                                                     {milestone.type === 'Standard' && <Tooltip content="Goal: Current lifestyle technically 'independent'." className="ml-1" />}
                                                     {milestone.type === 'Fat' && <Tooltip content="Goal: Luxury lifestyle with buffer." className="ml-1" />}
-                                                    {milestone.type === 'Coast' && <Tooltip content="Goal: Saved enough to stop contributing today." className="ml-1" />}
-                                                    {milestone.type === 'Barista' && <Tooltip content="Assumes you work part-time to earn supplemental income." className="ml-1" />}
+                                                    {milestone.type === 'Coast' && <Tooltip content="You've saved enough that you no longer need to contribute to reach your goal, but still need to work to cover current expenses." className="ml-1" />}
+                                                    {milestone.type === 'Barista' && <Tooltip content="Your portfolio covers a portion of your expenses, allowing you to switch to a lower-stress part-time job." className="ml-1" />}
                                                     {milestone.percentageProgress >= 100 && (
                                                         <span className="px-2 py-0.5 text-[10px] font-bold uppercase bg-emerald-100 dark:bg-emerald-900/30 text-emerald-600 dark:text-emerald-400 rounded-full">
                                                             Achieved
diff --git a/src/components/features/InputSection.tsx b/src/components/features/InputSection.tsx
index 537f505..c793174 100644
--- a/src/components/features/InputSection.tsx
+++ b/src/components/features/InputSection.tsx
@@ -84,7 +84,7 @@ const InputSection: React.FC<InputSectionProps> = ({ profile, setProfile, onRest
   // const resetToToday = () => { ... }
 
   const inputClass = "w-full rounded-md border-slate-300 dark:border-slate-600 bg-white dark:bg-slate-800 text-slate-900 dark:text-white shadow-sm focus:border-blue-500 focus:ring-blue-500 border p-2 transition-colors";
-  const labelClass = "block text-sm font-medium text-slate-600 dark:text-slate-300 mb-1";
+  const labelClass = "flex items-center gap-1 text-sm font-medium text-slate-600 dark:text-slate-300 mb-1";
   const iconClass = "absolute left-3 top-2 text-slate-400 dark:text-slate-500";
   const containerClass = "bg-white dark:bg-slate-900 rounded-xl shadow-sm border border-slate-200 dark:border-slate-800 p-6 space-y-8 transition-colors";
   const headerClass = "text-xl font-bold text-slate-800 dark:text-white flex items-center gap-2 mb-4";
@@ -177,9 +177,9 @@ const InputSection: React.FC<InputSectionProps> = ({ profile, setProfile, onRest
           </div>
           <div className="md:col-span-2">
             <div className="flex items-center justify-between mb-1">
-              <label htmlFor="spendingNeed" className="text-sm font-medium text-slate-600 dark:text-slate-300">
+              <label htmlFor="spendingNeed" className="text-sm font-medium text-slate-600 dark:text-slate-300 flex items-center gap-1">
                 Annual Spending Need
-                <Tooltip content="Estimated annual retirement living expenses (net of taxes). The strategy engine will calculate the gross withdrawal needed to cover this amount plus estimated federal taxes." className="ml-1" />
+                <Tooltip content="Annual Spending Need in Retirement. This is your target annual budget (net of taxes) once retired." />
               </label>
               <div className="flex bg-slate-100 dark:bg-slate-800 p-1 rounded-lg border border-slate-200 dark:border-slate-700 text-xs font-bold">
                 <button
@@ -190,9 +190,9 @@ const InputSection: React.FC<InputSectionProps> = ({ profile, setProfile, onRest
                   onClick={() => handleChange('isSpendingReal', false)}
                   className={`px-3 py-1.5 rounded-md min-h-[32px] transition-colors ${!profile.isSpendingReal ? 'bg-white dark:bg-slate-600 text-blue-600 dark:text-blue-300 shadow-sm' : 'text-slate-500 hover:text-slate-700'}`}
                 >Future $</button>
-                <Tooltip content="Select whether your spending goal is measured in today's purchasing power (adjusted for inflation) or future nominal dollars." className="ml-1 mt-1.5">
-                  <div className="w-4 h-4" />
-                </Tooltip>
+                <div className="flex items-center pr-1 pl-1">
+                  <Tooltip content="Today's $ represents values in current purchasing power. Future $ shows nominal amounts inflated at your target rate." />
+                </div>
               </div>
             </div>
             <div className="relative">
@@ -219,9 +219,9 @@ const InputSection: React.FC<InputSectionProps> = ({ profile, setProfile, onRest
           {[
             { label: 'Traditional IRA / 401k', key: 'traditionalIRA' as const },
             { label: 'Roth IRA / 401k', key: 'rothIRA' as const },
-            { label: 'Roth Carry/Basis', key: 'rothBasis' as const, tooltip: 'Your total accumulated contributions to Roth accounts. This basis can be withdrawn tax-free and penalty-free at any time, making it a key liquidity source before age 59½.' },
+            { label: 'Roth Carry/Basis', key: 'rothBasis' as const, tooltip: "The total amount of after-tax principal you've contributed to your Roth accounts. This portion can always be withdrawn tax-free and penalty-free." },
             { label: 'Taxable Brokerage', key: 'brokerage' as const },
-            { label: 'HSA', key: 'hsa' as const, tooltip: 'Health Savings Account balance. Funds can be withdrawn tax-free for qualified medical expenses.' },
+            { label: 'HSA', key: 'hsa' as const, tooltip: "Health Savings Account. A triple-tax-advantaged account where contributions are tax-deductible, growth is tax-free, and withdrawals for medical expenses are tax-free." },
           ].map((item) => (
             <div key={item.key}>
               <label htmlFor={`asset-${item.key}`} className={labelClass}>
diff --git a/src/components/features/LongevityAnalysis.tsx b/src/components/features/LongevityAnalysis.tsx
index 5a0227b..19dcf03 100644
--- a/src/components/features/LongevityAnalysis.tsx
+++ b/src/components/features/LongevityAnalysis.tsx
@@ -29,7 +29,7 @@ const LongevityAnalysis: React.FC<LongevityAnalysisProps> = ({ longevity, profil
           }`}>
           <h3 className={`text-sm font-medium uppercase flex items-center gap-2 ${sustainable ? 'text-green-800 dark:text-green-400' : 'text-orange-800 dark:text-orange-400'}`}>
             Initial Withdrawal Rate
-            <Tooltip content="The percentage of your total portfolio withdrawn in the first year of retirement to cover expenses and taxes. Lower is safer." />
+            <Tooltip content="The percentage of your portfolio you'll withdraw in the first year of retirement. 4% is traditionally considered a 'safe' benchmark." />
           </h3>
           <div className="flex items-baseline gap-2 mt-1">
             <span className="text-3xl font-bold text-slate-900 dark:text-white">{(initialWithdrawalRate * 100).toFixed(1)}%</span>
@@ -286,7 +286,7 @@ const LongevityAnalysis: React.FC<LongevityAnalysisProps> = ({ longevity, profil
                               {/* RMD indicator (age 73+) */}
                               {data.rmdAmount > 0 && (
                                 <div className="flex justify-between items-center text-orange-600 dark:text-orange-400 text-[10px] italic">
-                                  <span className="flex items-center gap-1">(RMD Required): <Tooltip content="Required Minimum Distribution: The minimum amount the IRS requires you to withdraw from tax-deferred accounts annually." /></span>
+                                  <span className="flex items-center gap-1">(RMD Required): <Tooltip content="Required Minimum Distribution. The mandatory annual withdrawal amount from tax-deferred accounts (like Traditional IRAs) starting at age 73 or 75." /></span>
                                   <span className="font-mono">${Math.round(data.rmdAmount).toLocaleString()}</span>
                                 </div>
                               )}
diff --git a/src/components/features/StrategyResults.tsx b/src/components/features/StrategyResults.tsx
index 712f2dd..ed24cf2 100644
--- a/src/components/features/StrategyResults.tsx
+++ b/src/components/features/StrategyResults.tsx
@@ -215,7 +215,7 @@ const StrategyResults: React.FC<StrategyResultsProps> = ({ result, profile, isDa
             <p className="font-bold text-slate-900 dark:text-white">{formatCurrency(result.taxableSocialSecurity)}</p>
           </div>
           <div className="p-2 bg-slate-50 dark:bg-slate-800 rounded">
-            <span className="text-slate-500 flex items-center gap-1">Provisional Income <Tooltip content="IRS formula used to determine how much of your Social Security benefits are subject to federal income tax." /></span>
+            <span className="text-slate-500 flex items-center gap-1">Provisional Income <Tooltip content="An IRS formula (Social Security + 50% of benefits + other income) used to determine how much of your Social Security is taxable." /></span>
             <p className="font-bold text-slate-900 dark:text-white">{formatCurrency(result.provisionalIncome)}</p>
           </div>
           <div className="p-2 bg-slate-50 dark:bg-slate-800 rounded">
@@ -249,7 +249,7 @@ const StrategyResults: React.FC<StrategyResultsProps> = ({ result, profile, isDa
               </p>
             </div>
             <div className="p-2 bg-slate-50 dark:bg-slate-800 rounded">
-              <span className="text-slate-500 text-[10px] flex items-center gap-1">Effective Marginal Rate <Tooltip content="The actual tax rate paid on your last dollar of income, accounting for hidden taxes like the Social Security tax torpedo." /></span>
+              <span className="text-slate-500 text-[10px] flex items-center gap-1">Effective Marginal Rate <Tooltip content="The tax rate applied to your very last dollar of income, which can be higher than your average rate due to deduction phase-outs." /></span>
               <p className={`font-bold ${result.rothConversionDetail.effectiveMarginalRate > 0.30
                 ? 'text-red-600 dark:text-red-400'
                 : 'text-slate-900 dark:text-white'
@@ -311,7 +311,7 @@ const StrategyResults: React.FC<StrategyResultsProps> = ({ result, profile, isDa
                     <div className="text-right">
                       {c.headroom > 0 && <span className="text-slate-600 dark:text-slate-400">Headroom: {formatCurrency(c.headroom)}</span>}
                       {c.annualCost && c.annualCost > 0 && (
-                        <p className="text-red-500 text-[10px] flex items-center gap-1 justify-end">IRMAA: {formatCurrency(c.annualCost)}/yr if crossed <Tooltip content="Income-Related Monthly Adjustment Amount: A surcharge added to your Medicare Part B and Part D premiums if your income is too high." /></p>
+                        <p className="text-red-500 text-[10px] flex items-center gap-1 justify-end">IRMAA: {formatCurrency(c.annualCost)}/yr if crossed <Tooltip content="Income-Related Monthly Adjustment Amount. A surcharge added to Medicare premiums if your modified adjusted gross income (MAGI) exceeds certain cliffs." /></p>
                       )}
                     </div>
                   </div>