Migliora il layout mobile delle sezioni home

MethodSteps passa a una sola colonna con step in orizzontale, PartnersStrip
riduce loghi e spaziature, TrainingCards ridimensiona testi e padding.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

src/components/home/TrainingCards.astro

@@ -46,5 +46,11 @@ const isSwapRow = (i: number) => Math.floor(i / 2) % 2 === 1;
   .tcards__photo { overflow: hidden; }
   .tcards__img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 1; transition: transform .5s ease; }
   .tcards__photo:hover .tcards__img { transform: scale(1.06); }
-  @media (max-width: 767px) { .tcards { grid-template-columns: repeat(2, 1fr); } }
+  @media (max-width: 767px) {
+    .tcards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
+    .tcards__cell { padding: 22px 16px; }
+    .tcards__cell h3 { font-size: 1rem; letter-spacing: .08em; }
+    .tcards__cell p { font-size: .74rem; }
+    .tcards__link { font-size: .62rem; letter-spacing: .14em; margin-top: 12px; }
+  }
 </style>