diff --git a/app/src/components/KpiCard.tsx b/app/src/components/KpiCard.tsx
index 766dc37..e5a9772 100644
--- a/app/src/components/KpiCard.tsx
+++ b/app/src/components/KpiCard.tsx
@@ -1,10 +1,9 @@
 import { Link } from 'react-router';
 import { intlLocale } from '@/i18n';
 import { useEffect, useRef, useState } from 'react';
-import { animate, useReducedMotion } from 'framer-motion';
+import { animate, motion, useReducedMotion } from 'framer-motion';
 import type { LucideIcon } from 'lucide-react';
 import { ArrowDownRight, ArrowUpRight } from 'lucide-react';
-import { Area, AreaChart, ResponsiveContainer } from 'recharts';
 import type { SemColor } from '@/data/types';
 import { fmtNumber, fmtPct } from '@/lib/format';
 import { cn } from '@/lib/utils';
@@ -21,6 +20,94 @@ const TINT: Record<SemColor, { bg: string; fg: string }> = {
 
 const EASE_OUT_QUART: [number, number, number, number] = [0.25, 1, 0.5, 1];
 
+const SPARK_W = 64;
+const SPARK_H = 28;
+const SPARK_PAD = 2;
+
+// Curva monotone cúbica (equivalente al type="monotone" de recharts)
+function sparkLinePath(data: number[]): string {
+  const n = data.length;
+  const min = Math.min(...data);
+  const max = Math.max(...data);
+  const range = max - min || 1;
+  const pts = data.map((v, i) => {
+    const x = SPARK_PAD + (i * (SPARK_W - SPARK_PAD * 2)) / (n - 1);
+    const y = SPARK_H - SPARK_PAD - ((v - min) / range) * (SPARK_H - SPARK_PAD * 2);
+    return { x, y };
+  });
+
+  const dx: number[] = [];
+  const slope: number[] = [];
+  for (let i = 0; i < n - 1; i++) {
+    dx[i] = pts[i + 1].x - pts[i].x || 1e-6;
+    slope[i] = (pts[i + 1].y - pts[i].y) / dx[i];
+  }
+  const t: number[] = [];
+  t[0] = slope[0];
+  t[n - 1] = slope[n - 2];
+  for (let i = 1; i < n - 1; i++) {
+    t[i] = slope[i - 1] === 0 || slope[i] === 0 ? 0 : (slope[i - 1] + slope[i]) / 2;
+  }
+  for (let i = 0; i < n - 1; i++) {
+    const a = t[i] / slope[i];
+    const b = t[i + 1] / slope[i];
+    const s = a * a + b * b;
+    if (s > 9) {
+      const k = 3 / Math.sqrt(s);
+      t[i] = k * a * slope[i];
+      t[i + 1] = k * b * slope[i];
+    }
+  }
+
+  let d = `M ${pts[0].x} ${pts[0].y}`;
+  for (let i = 0; i < n - 1; i++) {
+    const p0 = pts[i];
+    const p1 = pts[i + 1];
+    const c1x = p0.x + dx[i] / 3;
+    const c1y = p0.y + (t[i] * dx[i]) / 3;
+    const c2x = p1.x - dx[i] / 3;
+    const c2y = p1.y - (t[i + 1] * dx[i]) / 3;
+    d += ` C ${c1x} ${c1y}, ${c2x} ${c2y}, ${p1.x} ${p1.y}`;
+  }
+  return d;
+}
+
+function Sparkline({ data, color, reduce }: { data: number[]; color: string; reduce: boolean }) {
+  const line = sparkLinePath(data);
+  const area = `${line} L ${SPARK_W - SPARK_PAD} ${SPARK_H} L ${SPARK_PAD} ${SPARK_H} Z`;
+  const gid = `spark-${color.replace(/[^a-zA-Z0-9]/g, '')}`;
+  const spring = { delay: 0.3, duration: 0.8, ease: 'easeOut' as const };
+
+  return (
+    <svg viewBox={`0 0 ${SPARK_W} ${SPARK_H}`} width="100%" height="100%" aria-hidden="true">
+      <defs>
+        <linearGradient id={gid} x1="0" y1="0" x2="0" y2="1">
+          <stop offset="0%" stopColor={color} stopOpacity="0.22" />
+          <stop offset="100%" stopColor={color} stopOpacity="0.02" />
+        </linearGradient>
+      </defs>
+      <motion.path
+        d={area}
+        fill={`url(#${gid})`}
+        initial={reduce ? false : { opacity: 0 }}
+        animate={{ opacity: 1 }}
+        transition={spring}
+      />
+      <motion.path
+        d={line}
+        fill="none"
+        stroke={color}
+        strokeWidth={1.8}
+        strokeLinecap="round"
+        strokeLinejoin="round"
+        initial={reduce ? false : { pathLength: 0 }}
+        animate={{ pathLength: 1 }}
+        transition={spring}
+      />
+    </svg>
+  );
+}
+
 interface KpiCardProps {
   icon: LucideIcon;
   tone: SemColor;
@@ -98,22 +185,7 @@ export default function KpiCard({
         </span>
         {spark && spark.length > 1 && (
           <div className="h-7 w-16">
-            <ResponsiveContainer width="100%" height="100%">
-              <AreaChart data={spark.map((v, i) => ({ i, v }))} margin={{ top: 2, bottom: 0, left: 0, right: 0 }}>
-                <Area
-                  type="monotone"
-                  dataKey="v"
-                  stroke={sparkColor ?? TINT[tone].fg}
-                  strokeWidth={1.8}
-                  fill={sparkColor ?? TINT[tone].fg}
-                  fillOpacity={0.14}
-                  isAnimationActive={!reduce}
-                  animationBegin={300}
-                  animationDuration={800}
-                  animationEasing="ease-out"
-                />
-              </AreaChart>
-            </ResponsiveContainer>
+            <Sparkline data={spark} color={sparkColor ?? TINT[tone].fg} reduce={!!reduce} />
           </div>
         )}
       </div>
diff --git a/app/vite.config.ts b/app/vite.config.ts
index 465e575..0006f95 100644
--- a/app/vite.config.ts
+++ b/app/vite.config.ts
@@ -23,13 +23,6 @@ export default defineConfig({
       output: {
         manualChunks(id) {
           if (!id.includes('node_modules')) return;
-          if (
-            id.includes('/recharts') ||
-            id.includes('/d3-') ||
-            id.includes('/recharts-')
-          ) {
-            return 'recharts';
-          }
           if (
             id.includes('/react/') ||
             id.includes('/react-dom/') ||