diff --git a/web/package-lock.json b/web/package-lock.json
index ec5cecb..c848807 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -15,6 +15,7 @@
         "@angular/forms": "^22.2.0",
         "@angular/platform-browser": "^22.2.0",
         "@angular/router": "^22.2.0",
+        "@fontsource-variable/inter": "^5.3.0",
         "@ng-icons/core": "^36.1.0",
         "@ng-icons/lucide": "^36.1.0",
         "@ngx-translate/core": "^18.0.0",
@@ -1469,6 +1470,15 @@
         }
       }
     },
+    "node_modules/@fontsource-variable/inter": {
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/@fontsource-variable/inter/-/inter-5.3.0.tgz",
+      "integrity": "sha512-OupL48va4JNofb97w6NYeF9S7W/kHNKM0Er8Dem5nqi4jeOLrVJDoE8tZEpnMJmtkvNbB1EIPPwHcdkF6b1oUA==",
+      "license": "OFL-1.1",
+      "funding": {
+        "url": "https://github.com/sponsors/ayuhito"
+      }
+    },
     "node_modules/@harperfast/extended-iterable": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/@harperfast/extended-iterable/-/extended-iterable-1.0.3.tgz",
diff --git a/web/package.json b/web/package.json
index 98835b1..cd32bd3 100644
--- a/web/package.json
+++ b/web/package.json
@@ -20,6 +20,7 @@
     "@angular/forms": "^22.2.0",
     "@angular/platform-browser": "^22.2.0",
     "@angular/router": "^22.2.0",
+    "@fontsource-variable/inter": "^5.3.0",
     "@ng-icons/core": "^36.1.0",
     "@ng-icons/lucide": "^36.1.0",
     "@ngx-translate/core": "^18.0.0",
diff --git a/web/src/app/features/annual/annual.ts b/web/src/app/features/annual/annual.ts
index 71181aa..a64b392 100644
--- a/web/src/app/features/annual/annual.ts
+++ b/web/src/app/features/annual/annual.ts
@@ -253,7 +253,7 @@ export class AnnualComponent {
         ),
         bar(
           t('kpi.variableExpenses'),
-          '#fb7185',
+          SERIES_COLORS.expensesLight,
           m.map((r) => active(r, r.month.variableExpenses)),
         ),
         bar(
diff --git a/web/src/app/features/dashboard/dashboard.ts b/web/src/app/features/dashboard/dashboard.ts
index 5844355..dc3d76a 100644
--- a/web/src/app/features/dashboard/dashboard.ts
+++ b/web/src/app/features/dashboard/dashboard.ts
@@ -597,7 +597,7 @@ import { StatusBadgeComponent } from '../../shared/status-badge';
             <dl class="mt-3 divide-y text-sm">
               <div class="flex items-center justify-between gap-3 py-2">
                 <dt class="flex items-center gap-2 text-muted-foreground">
-                  <ng-icon name="lucideGauge" [style.color]="colors.net" aria-hidden="true" />
+                  <ng-icon name="lucideGauge" [style.color]="colors.saved" aria-hidden="true" />
                   {{ 'kpi.avgSavingsRate' | translate }}
                 </dt>
                 <dd class="num font-medium">{{ o.averageMonthlySavingsRate | pct }}</dd>
@@ -983,9 +983,9 @@ export class DashboardComponent {
           type: 'line',
           connectNulls: false,
           symbol: 'circle',
-          symbolSize: 6,
+          symbolSize: 5,
           data: months.map((r) => active(r.month, r.month.netBalance)),
-          lineStyle: { width: 2, color: SERIES_COLORS.net },
+          lineStyle: { width: 1.5, type: 'dashed', color: SERIES_COLORS.net },
           itemStyle: { color: SERIES_COLORS.net },
           z: 3,
         },
diff --git a/web/src/app/features/net-worth/net-worth.ts b/web/src/app/features/net-worth/net-worth.ts
index eb9694a..dffadba 100644
--- a/web/src/app/features/net-worth/net-worth.ts
+++ b/web/src/app/features/net-worth/net-worth.ts
@@ -340,7 +340,7 @@ export class NetWorthComponent {
           showSymbol: series.length < 3,
           areaStyle: { opacity: 0.12 },
           data: series.map((p) => [p.date, p.netWorth]),
-          itemStyle: { color: SERIES_COLORS.net },
+          itemStyle: { color: SERIES_COLORS.wealth },
         },
         {
           name: this.i18n.instant('netWorth.liabilities'),
diff --git a/web/src/app/features/portfolio/portfolio.ts b/web/src/app/features/portfolio/portfolio.ts
index 739a8c6..6d0f91d 100644
--- a/web/src/app/features/portfolio/portfolio.ts
+++ b/web/src/app/features/portfolio/portfolio.ts
@@ -28,6 +28,7 @@ import { Toasts } from '../../core/toast';
 import { ChartComponent } from '../../shared/chart';
 import {
   SERIES_COLORS,
+  ASSET_CLASS_COLORS,
   baseChart,
   categoryAxis,
   moneyAxis,
@@ -64,15 +65,7 @@ import {
 
 type SortKey = 'value' | 'gain' | 'today' | 'weight';
 
-const CLASS_COLORS: Record<AssetClass, string> = {
-  Stock: '#8b5cf6',
-  Etf: '#10b981',
-  Bond: '#0891b2',
-  Fund: '#84cc16',
-  Crypto: '#f59e0b',
-  Cash: '#a1a1aa',
-  Other: '#a855f7',
-};
+const CLASS_COLORS: Record<AssetClass, string> = ASSET_CLASS_COLORS;
 
 /**
  * Read-only view of broker data: nothing on this page can change a broker account. Coins held elsewhere (an
@@ -857,7 +850,7 @@ export class PortfolioComponent {
           showSymbol: false,
           areaStyle: { opacity: 0.1 },
           data: series.map((p) => [p.date, p.value]),
-          itemStyle: { color: SERIES_COLORS.net },
+          itemStyle: { color: SERIES_COLORS.value },
         },
         {
           name: this.i18n.instant('portfolio.contributions'),
@@ -865,7 +858,7 @@ export class PortfolioComponent {
           showSymbol: false,
           step: 'end',
           data: series.map((p) => [p.date, p.netContributions]),
-          itemStyle: { color: '#a1a1aa' },
+          itemStyle: { color: SERIES_COLORS.muted },
           lineStyle: { type: 'dashed' },
         },
       ],
diff --git a/web/src/app/shared/category-label.spec.ts b/web/src/app/shared/category-label.spec.ts
index dae8893..14e84e3 100644
--- a/web/src/app/shared/category-label.spec.ts
+++ b/web/src/app/shared/category-label.spec.ts
@@ -12,10 +12,14 @@ describe('categoryLabel', () => {
   });
 
   it("shows the owner's name for a renamed built-in category", () => {
-    expect(categoryLabel(i18n, { key: 'gym', name: 'Ginásio & Padel', renamed: true })).toBe('Ginásio & Padel');
+    expect(categoryLabel(i18n, { key: 'gym', name: 'Ginásio & Padel', renamed: true })).toBe(
+      'Ginásio & Padel',
+    );
   });
 
   it('shows custom categories by name', () => {
-    expect(categoryLabel(i18n, { key: 'custom-side-project', name: 'Side project' })).toBe('Side project');
+    expect(categoryLabel(i18n, { key: 'custom-side-project', name: 'Side project' })).toBe(
+      'Side project',
+    );
   });
 });
diff --git a/web/src/app/shared/chart-options.ts b/web/src/app/shared/chart-options.ts
index 04b80b9..2f664dd 100644
--- a/web/src/app/shared/chart-options.ts
+++ b/web/src/app/shared/chart-options.ts
@@ -1,14 +1,39 @@
 import type { EChartsOption } from 'echarts';
 
+/**
+ * One meaning, one colour, on every page: money in and wealth are the brand green, spending is rose, investing is
+ * violet, saving is teal. Balances and references are neutral so they never compete with the series they summarise.
+ */
 export const SERIES_COLORS = {
   income: '#059669',
   expenses: '#e11d48',
+  /** Second expense shade (e.g. variable vs fixed). */
+  expensesLight: '#fb7185',
   invested: '#7c3aed',
   saved: '#0891b2',
   budget: '#a1a1aa',
-  net: '#f59e0b',
+  /** Net balance line drawn over income/expense bars: neutral, it summarises them. */
+  net: '#71717a',
+  /** Portfolio value: the investing colour. */
+  value: '#7c3aed',
+  /** Net worth: the brand green. */
+  wealth: '#059669',
+  muted: '#a1a1aa',
 };
 
+/** Asset classes, from the same family: shares violet, funds indigo, bonds teal, crypto amber, cash grey. */
+export const ASSET_CLASS_COLORS = {
+  Stock: '#7c3aed',
+  Etf: '#059669',
+  Bond: '#0891b2',
+  Fund: '#4f46e5',
+  Crypto: '#d97706',
+  Cash: '#a1a1aa',
+  Other: '#db2777',
+} as const;
+
+export const CHART_FONT = "'Inter Variable', Inter, ui-sans-serif, system-ui, sans-serif";
+
 const axisLabel = { color: '#a1a1aa', fontSize: 11 };
 
 export function moneyAxis(locale: string): EChartsOption['yAxis'] {
diff --git a/web/src/app/shared/chart.ts b/web/src/app/shared/chart.ts
index a58faf9..1591a0a 100644
--- a/web/src/app/shared/chart.ts
+++ b/web/src/app/shared/chart.ts
@@ -15,6 +15,7 @@ import { NgIcon } from '@ng-icons/core';
 import { TranslatePipe } from '@ngx-translate/core';
 import { Prefs } from '../core/prefs';
 import { APP_ICONS } from './icons';
+import { CHART_FONT } from './chart-options';
 
 /** True when no series has a single non-zero value: nothing worth drawing (e.g. a year without movements). */
 export function chartIsEmpty(option: EChartsOption): boolean {
@@ -104,7 +105,11 @@ export class ChartComponent implements OnDestroy {
       });
       (this.chart as unknown as { __theme?: string }).__theme = themeKey;
     }
-    this.chart.setOption({ backgroundColor: 'transparent', ...this.option() }, true);
+    // The app's font (ECharts draws its own text and does not inherit CSS).
+    this.chart.setOption(
+      { backgroundColor: 'transparent', textStyle: { fontFamily: CHART_FONT }, ...this.option() },
+      true,
+    );
   }
 
   ngOnDestroy() {
diff --git a/web/src/app/shared/progress.ts b/web/src/app/shared/progress.ts
index b0f8557..cccfda7 100644
--- a/web/src/app/shared/progress.ts
+++ b/web/src/app/shared/progress.ts
@@ -21,10 +21,6 @@ export class ProgressComponent {
   readonly barColor = computed(() => {
     if (this.tone() === 'brand') return 'var(--primary)';
     const v = this.value();
-    return v > 1
-      ? 'var(--color-rose-500)'
-      : v >= 0.9
-        ? 'var(--color-amber-500)'
-        : 'var(--primary)';
+    return v > 1 ? 'var(--color-rose-500)' : v >= 0.9 ? 'var(--color-amber-500)' : 'var(--primary)';
   });
 }
diff --git a/web/src/app/shell/shell.ts b/web/src/app/shell/shell.ts
index 7c9e719..10ae2a7 100644
--- a/web/src/app/shell/shell.ts
+++ b/web/src/app/shell/shell.ts
@@ -135,8 +135,16 @@ interface NavItem {
             variant="ghost"
             size="icon"
             (click)="toggleTheme()"
-            [attr.aria-label]="'settings.theme' | translate"
-            [hlmTooltip]="'settings.theme' | translate"
+            [attr.aria-label]="
+              ('settings.theme' | translate) +
+              ': ' +
+              ('settings.themes.' + prefs.theme() | translate)
+            "
+            [hlmTooltip]="
+              ('settings.theme' | translate) +
+              ': ' +
+              ('settings.themes.' + prefs.theme() | translate)
+            "
           >
             <ng-icon
               [name]="
diff --git a/web/src/styles.css b/web/src/styles.css
index e6f2b7d..48e9e7b 100644
--- a/web/src/styles.css
+++ b/web/src/styles.css
@@ -1,4 +1,6 @@
 @layer theme, base, components, utilities;
+/* Inter, bundled with the app (served from 'self', so the CSP needs nothing): the same type on every system. */
+@import '@fontsource-variable/inter';
 @import 'tailwindcss/theme.css' layer(theme);
 @import 'tailwindcss/preflight.css' layer(base);
 @import 'tailwindcss/utilities.css';
@@ -7,7 +9,9 @@
 @import '@spartan-ng/brain/hlm-tailwind-preset.css';
 
 @theme {
-  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
+  --font-sans:
+    'Inter Variable', 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto,
+    sans-serif;
   --color-income: #10b981;
   --color-expense: #e11d48;
   --color-invest: #7c3aed;