Refactor homepage mobile content layout

assets/style.css

@@ -632,6 +632,104 @@ img, picture { display: block; max-width: 100%; height: auto; }
 }
 .hero-card__body { padding: 18px; display: grid; gap: 10px; }
 
+.sr-only {
+  position: absolute;
+  width: 1px;
+  height: 1px;
+  padding: 0;
+  margin: -1px;
+  overflow: hidden;
+  clip: rect(0, 0, 0, 0);
+  white-space: nowrap;
+  border: 0;
+}
+
+.discover-shell {
+  max-width: 1200px;
+  margin: 24px auto 40px;
+  display: grid;
+  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
+  gap: 24px;
+  align-items: stretch;
+}
+.discover-shell__main,
+.tag-panel,
+.empty-state,
+.quick-start {
+  background: var(--surface);
+  border: 1px solid var(--stroke);
+  border-radius: var(--radius);
+  box-shadow: var(--shadow);
+}
+.discover-shell__main {
+  padding: 22px;
+  display: grid;
+  gap: 18px;
+}
+.section-header--stack {
+  flex-direction: column;
+  align-items: flex-start;
+  text-align: left;
+}
+.discover-search {
+  margin: 0;
+}
+.discover-stats {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 12px;
+}
+.discover-stat {
+  padding: 14px;
+  background: var(--panel);
+  border: 1px solid var(--stroke);
+  border-radius: 14px;
+  display: grid;
+  gap: 4px;
+}
+.discover-stat strong {
+  font-size: clamp(1.1rem, 2vw, 1.5rem);
+}
+.discover-stat span {
+  color: var(--muted);
+  font-size: 14px;
+}
+.tag-panel {
+  padding: 16px;
+  display: grid;
+  gap: 12px;
+  box-shadow: none;
+  border-radius: 16px;
+}
+.tag-panel__head {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  gap: 12px;
+}
+.tag-panel__head h3 {
+  margin: 0;
+}
+.tag-row--panel {
+  margin-top: 0;
+}
+.quick-start {
+  max-width: 1200px;
+  margin: 0 auto 40px;
+  padding: 22px;
+  display: grid;
+  gap: 18px;
+}
+.empty-state {
+  padding: 22px;
+  display: grid;
+  gap: 12px;
+  text-align: center;
+}
+.empty-state h3,
+.empty-state p {
+  margin: 0;
+}
 .section-header {
   max-width: 1200px;
   margin: 0 auto 12px;
@@ -824,6 +922,40 @@ img, picture { display: block; max-width: 100%; height: auto; }
 #backToTop.show { opacity: 1; transform: translateY(0); }
 #backToTop:hover { background: var(--panel-2); }
 
+@media (max-width: 900px) {
+  .discover-shell {
+    grid-template-columns: 1fr;
+    gap: 16px;
+    margin: 16px auto 32px;
+  }
+
+  .discover-shell__main,
+  .quick-start,
+  .coming-features,
+  .empty-state {
+    padding: 18px;
+  }
+
+  .discover-stats {
+    grid-template-columns: 1fr;
+  }
+
+  .tag-panel__head {
+    flex-direction: column;
+    align-items: flex-start;
+  }
+}
+
+@media (max-width: 480px) {
+  .discover-shell__main,
+  .quick-start,
+  .coming-features,
+  .empty-state,
+  .tag-panel {
+    padding: 14px;
+  }
+}
+
 /* ══════════════════════════════════════════════════════════════════
    RESPONSIVE
    ══════════════════════════════════════════════════════════════════ */