diff --git a/frontend/draco-alertes.css b/frontend/draco-alertes.css
new file mode 100644
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+++ b/frontend/draco-alertes.css
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+/* Alertes unifiées dracodev — Fusion #69. Styles neutres, variables
+ * d'hôte avec replis sombres (les 4 hôtes sont à dominante sombre). */
+.draco-alertes-overlay {
+  position: fixed; inset: 0; z-index: 30000;
+  display: none; align-items: flex-start; justify-content: center;
+  padding: 8vh 16px 16px;
+  background: rgb(0 0 0 / .55); overflow-y: auto;
+}
+.draco-alertes-box {
+  width: 720px; max-width: 100%;
+  background: var(--bg-primary, #1f1f1f);
+  color: var(--text, #eceee9);
+  border: 1px solid var(--border, #333);
+  border-radius: 14px; box-shadow: 0 16px 48px rgb(0 0 0 / .5);
+  padding: 16px 18px 18px;
+}
+.draco-alertes-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
+.draco-alertes-head h2 { margin: 0; font-size: 18px; }
+.draco-alertes-close {
+  border: 1px solid var(--border, #333); background: transparent;
+  color: inherit; border-radius: 8px; padding: 4px 10px; cursor: pointer;
+}
+.draco-alertes-note { font-size: 12.5px; color: var(--text-dim, #999); margin: 8px 0 14px; }
+.draco-alertes-group { font-size: 15px; margin: 18px 0 6px; }
+.draco-alertes-section h3 { font-size: 14px; margin: 12px 0 6px; }
+.draco-alertes-item {
+  border: 1px solid var(--border, #2a2a2a); border-radius: 10px;
+  padding: 9px 12px; margin: 6px 0;
+}
+.draco-alertes-item.is-active { border-color: #e8762c; }
+.draco-alertes-title { font-weight: 600; color: inherit; text-decoration: none; }
+.draco-alertes-title:hover { text-decoration: underline; }
+.draco-alertes-detail {
+  font-size: 13px; color: var(--text-dim, #bbb); margin-top: 2px;
+  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
+}
+.draco-alertes-meta { font-size: 11.5px; color: var(--text-tertiary, #777); margin-top: 4px; }
+.draco-alertes-empty { font-size: 13px; color: var(--text-dim, #999); padding: 6px 0; }
+.draco-alertes-empty a { color: inherit; }