step 7.3: done

public/css/main.css

@@ -568,3 +568,95 @@ button:hover { background: #c73650; }
   from { opacity: 0; transform: translateX(-50%) translateY(1rem); }
   to { opacity: 1; transform: translateX(-50%) translateY(0); }
 }
+
+/* ===== Expedition UI ===== */
+.expedition-def-card {
+  background: #16213e;
+  border: 1px solid #0f3460;
+  border-radius: 6px;
+  padding: 1rem;
+  margin-bottom: 0.75rem;
+}
+
+.expedition-active-card {
+  background: #16213e;
+  border: 1px solid #0f3460;
+  border-radius: 6px;
+  padding: 1rem;
+  text-align: center;
+}
+
+.expedition-name {
+  font-size: 1.1rem;
+  font-weight: 600;
+  color: #e94560;
+  margin-bottom: 0.25rem;
+}
+
+.expedition-desc {
+  font-size: 0.875rem;
+  color: #a0a0a0;
+  margin-bottom: 0.75rem;
+}
+
+.expedition-info {
+  font-size: 0.8rem;
+  color: #888;
+  margin-top: 0.5rem;
+}
+
+.expedition-rewards {
+  font-size: 0.8rem;
+  color: #c9a538;
+  margin-top: 0.25rem;
+}
+
+.expedition-rewards-preview {
+  font-size: 0.85rem;
+  color: #c9a538;
+  margin-top: 0.5rem;
+}
+
+.expedition-progress {
+  margin: 0.75rem 0;
+}
+
+.expedition-progress-bar {
+  width: 100%;
+  height: 12px;
+  background: #0f3460;
+  border-radius: 6px;
+  overflow: hidden;
+}
+
+.expedition-progress-fill {
+  height: 100%;
+  background: linear-gradient(90deg, #e94560, #c23152);
+  transition: width 0.5s ease;
+}
+
+.expedition-progress-text {
+  font-size: 0.8rem;
+  color: #a0a0a0;
+  margin-top: 0.25rem;
+}
+
+.btn-expedition {
+  background: #e94560;
+  border: none;
+  color: #fff;
+  padding: 0.5rem 1rem;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 0.875rem;
+  margin-top: 0.5rem;
+}
+
+.btn-expedition:hover {
+  background: #c23152;
+}
+
+.btn-expedition:disabled {
+  background: #555;
+  cursor: not-allowed;
+}