fix(i18n): improve English layout for homepage left-pane and report title

- Add sans-serif font for English left-pane (status, workflow sections)
- Shorten English workflow step descriptions
- Reduce English report title font-size from 36px to 28px

frontend/src/components/Step4Report.vue

@@ -5153,3 +5153,10 @@ watch(() => props.reportId, (newId) => {
 .log-msg.warning { color: #FFA726; }
 .log-msg.success { color: #66BB6A; }
 </style>
+
+<style>
+/* English locale: smaller report title */
+html[lang="en"] .report-header-block .main-title {
+  font-size: 28px;
+}
+</style>

frontend/src/components/Step5Interaction.vue

@@ -2575,3 +2575,10 @@ watch(() => props.simulationId, (newId) => {
   margin: 24px 0;
 }
 </style>
+
+<style>
+/* English locale: smaller report title */
+html[lang="en"] .report-header-block .main-title {
+  font-size: 28px;
+}
+</style>

frontend/src/views/Home.vue

@@ -922,4 +922,22 @@ html[lang="en"] .tag-row {
 html[lang="en"] .navbar .nav-links {
   font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
 }
+
+/* Left pane: system status + workflow */
+html[lang="en"] .status-section {
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+}
+
+html[lang="en"] .status-section .status-ready {
+  font-size: 1.6rem;
+}
+
+html[lang="en"] .status-section .metric-value {
+  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+  font-size: 1.5rem;
+}
+
+html[lang="en"] .workflow-section {
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+}
 </style>