Fix static data volume mount and add global hover-to-translate mode

styles.css

@@ -1033,3 +1033,95 @@ body {
   opacity: 1;
   transform: translateY(0);
 }
+
+/* === HOVER-TO-TRANSLATE MODE & FLOATING TOOLTIP === */
+.hover-toggle-btn {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.4rem;
+  font-family: inherit;
+  font-size: 0.82rem;
+  font-weight: 700;
+  padding: 0.42rem 0.8rem;
+  border-radius: 999px;
+  cursor: pointer;
+  border: 1px solid var(--border-strong);
+  background: var(--bg-subtle);
+  color: var(--text-secondary);
+  transition: all 0.15s ease;
+  white-space: nowrap;
+}
+
+.hover-toggle-btn.active {
+  background: var(--indigo-light);
+  color: var(--indigo);
+  border-color: #a5b4fc;
+}
+
+.hover-toggle-btn:hover {
+  transform: translateY(-1px);
+}
+
+body.hover-translate-on .word-token {
+  border-bottom: 1px dashed rgba(79, 70, 229, 0.35);
+}
+
+body.hover-translate-on .word-token:hover {
+  background: #e0e7ff;
+  color: #1e1b4b;
+}
+
+.hover-translate-tooltip {
+  position: fixed;
+  z-index: 9999;
+  background: #18181b;
+  color: #ffffff;
+  padding: 0.55rem 0.85rem;
+  border-radius: 10px;
+  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.28);
+  pointer-events: none;
+  opacity: 0;
+  transform: translate(-50%, -100%) translateY(-8px);
+  transition: opacity 0.12s ease;
+  max-width: 310px;
+  font-size: 0.84rem;
+  line-height: 1.35;
+  border: 1px solid rgba(255, 255, 255, 0.14);
+}
+
+.hover-translate-tooltip.visible {
+  opacity: 1;
+}
+
+.hover-translate-tooltip::after {
+  content: "";
+  position: absolute;
+  top: 100%;
+  left: 50%;
+  transform: translateX(-50%);
+  border-width: 6px;
+  border-style: solid;
+  border-color: #18181b transparent transparent transparent;
+}
+
+.hover-tt-top {
+  display: flex;
+  align-items: center;
+  gap: 0.4rem;
+  margin-bottom: 0.18rem;
+  font-weight: 700;
+  color: #f4f4f5;
+}
+
+.hover-tt-en {
+  color: #fde68a;
+  font-weight: 700;
+  font-size: 0.9rem;
+}
+
+.hover-tt-note {
+  color: #a1a1aa;
+  font-size: 0.74rem;
+  margin-top: 0.15rem;
+}
+