feat: Implement initial PolyWeather map application frontend with dark theme UI and data collection module.

web/static/style.css

@@ -1183,3 +1183,75 @@ body {
   height: 300px;
   width: 100%;
 }
+
+/* ── Info Button ── */
+.info-btn {
+  background: rgba(99, 102, 241, 0.1);
+  border: 1px solid rgba(99, 102, 241, 0.3);
+  color: var(--accent-blue);
+  padding: 6px 14px;
+  border-radius: 8px;
+  font-size: 13px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: var(--transition);
+  display: flex;
+  align-items: center;
+  gap: 6px;
+}
+.info-btn:hover {
+  background: rgba(99, 102, 241, 0.2);
+  border-color: var(--accent-blue);
+  transform: translateY(-1px);
+}
+
+/* ── Guide Modal Customizations ── */
+.modal-content.large {
+  max-width: 900px;
+}
+
+.guide-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
+  gap: 16px;
+  padding: 4px;
+}
+
+.guide-card {
+  background: rgba(255, 255, 255, 0.03);
+  border: 1px solid var(--border-subtle);
+  border-radius: 12px;
+  padding: 16px;
+  transition: var(--transition);
+}
+.guide-card:hover {
+  background: rgba(255, 255, 255, 0.05);
+  border-color: var(--border-glass);
+}
+.guide-card h3 {
+  font-size: 15px;
+  font-weight: 700;
+  color: var(--accent-cyan);
+  margin-bottom: 10px;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+.guide-card p {
+  font-size: 13px;
+  line-height: 1.6;
+  color: var(--text-secondary);
+  margin-bottom: 0;
+}
+.guide-card b {
+  color: var(--text-primary);
+}
+
+.guide-footer {
+  margin-top: 24px;
+  padding-top: 16px;
+  border-top: 1px solid var(--border-subtle);
+  text-align: center;
+  font-size: 11px;
+  color: var(--text-muted);
+}