after migration

static/css/style.css

@@ -538,6 +538,98 @@ a.link-card:hover,
     font-size: 0.9rem;
 }
 
+/* ========================================
+   ARCHITECTURE SPOILER
+   ======================================== */
+
+.architecture-spoiler {
+    margin: 0 auto 1.5rem;
+    max-width: 1200px;
+    width: calc(100% - 2rem);
+    background: #ffffff;
+    border: 1px solid #dee2e6;
+    border-radius: 8px;
+    overflow: hidden;
+}
+
+.architecture-summary {
+    padding: 0.8rem 1.2rem;
+    background: #f8f9fa;
+    color: #2C3E50;
+    cursor: pointer;
+    font-size: 0.95rem;
+    font-weight: 600;
+    display: flex;
+    align-items: center;
+    gap: 0.6rem;
+    transition: background-color 0.2s ease;
+    user-select: none;
+    border-bottom: 1px solid #dee2e6;
+}
+
+.architecture-summary:hover {
+    background: #e9ecef;
+}
+
+.architecture-summary i {
+    font-size: 1.1rem;
+    color: #6c757d;
+}
+
+.architecture-spoiler[open] .architecture-summary {
+    background: #e9ecef;
+}
+
+.architecture-content {
+    padding: 1.5rem;
+    background: #ffffff;
+    text-align: center;
+    max-height: 70vh;
+    overflow-y: auto;
+}
+
+.architecture-image {
+    width: 100%;
+    max-width: 100%;
+    height: auto;
+    max-height: 60vh;
+    object-fit: contain;
+    border-radius: 4px;
+    transition: opacity 0.2s ease;
+}
+
+.architecture-image:hover {
+    opacity: 0.95;
+}
+
+.architecture-caption {
+    margin-top: 1rem;
+    color: #6c757d;
+    font-size: 0.9rem;
+    font-style: italic;
+}
+
+/* Responsive adjustments for mobile */
+@media (max-width: 768px) {
+    .architecture-spoiler {
+        width: calc(100% - 1rem);
+    }
+
+    .architecture-content {
+        padding: 1rem;
+        max-height: 50vh;
+    }
+
+    .architecture-image {
+        max-height: 45vh;
+    }
+
+    .architecture-summary {
+        font-size: 0.85rem;
+        padding: 0.7rem 1rem;
+    }
+}
+
 
 /* ========================================
    BUTTONS