diff --git a/DESIGN.md b/DESIGN.md
index dd35e50a..1548dfd5 100644
--- a/DESIGN.md
+++ b/DESIGN.md
@@ -75,6 +75,7 @@ Layout and sizing:
 - The impeccable skill reference rule "cap line length at ~65-75ch" does NOT apply here. Ignore it. Readability at wide widths is carried by vertical rhythm, leading, and the modular type scale instead.
 - If you believe a width cap is actually necessary for some specific element, ask first with a concrete reason before adding it.
 - Body type floor is 16px (`--text-base: 1rem`). Content-heavy passages may go to 1.125rem.
+- Absolute minimum font size is 12px (`0.75rem`) for ANY text, including pills, badges, tags, captions, footnotes. Anything smaller hits Chrome's default minimum-font-size floor and renders inconsistently across browsers and user accessibility settings. Use `var(--text-xs)` (`0.8rem`) as the smallest token.
 - When in doubt about any type size, pick one step larger than what the impeccable skill's scale references suggest. The user has repeatedly corrected sizes upward (11+ separate requests across 8 sessions). Never reduce an existing size unprompted. Footer, meta rows, expand content, labels, headings all trend too small by default.
 - Row numbers in the table: left-align, no leading zeros. The user tried zero-padding and rejected it.
 - Adjacent heading levels differ by at least 0.25rem of rendered size.
diff --git a/README.md b/README.md
index 5e0652f1..dde54a73 100644
--- a/README.md
+++ b/README.md
@@ -838,7 +838,7 @@ _Libraries for working with graphical user interface applications._
   - [nicegui](https://github.com/zauberzeug/nicegui) - An easy-to-use, Python-based UI framework, which shows up in your web browser.
   - [pywebview](https://github.com/r0x0r/pywebview/) - A lightweight cross-platform native wrapper around a webview component.
 - Terminal
-  - [curses](https://docs.python.org/3/library/curses.html) - Built-in wrapper for [ncurses](http://www.gnu.org/software/ncurses/) used to create terminal GUI applications.
+  - [curses](https://docs.python.org/3/library/curses.html) - (Python standard library) The built-in wrapper for [ncurses](http://www.gnu.org/software/ncurses/) used to create terminal GUI applications.
   - [urwid](https://github.com/urwid/urwid) - A library for creating terminal GUI applications with strong support for widgets, events, rich colors, etc.
 - Wrappers
   - [gooey](https://github.com/chriskiehl/Gooey) - Turn command line programs into a full GUI application with one line.
diff --git a/uv.lock b/uv.lock
index a097aafb..635a3db0 100644
--- a/uv.lock
+++ b/uv.lock
@@ -3,7 +3,7 @@ revision = 3
 requires-python = ">=3.13"
 
 [options]
-exclude-newer = "2026-04-30T04:22:17.540198Z"
+exclude-newer = "2026-04-30T04:38:39.45925Z"
 exclude-newer-span = "P3D"
 
 [[package]]
diff --git a/website/build.py b/website/build.py
index 1e5585c9..db42c176 100644
--- a/website/build.py
+++ b/website/build.py
@@ -118,6 +118,84 @@ def build_robots_txt() -> str:
     return f"User-agent: *\nContent-Signal: search=yes, ai-input=yes, ai-train=yes\nAllow: /\n\nSitemap: {SITEMAP_URL}\n"
 
 
+WEBSITE_ID = f"{SITE_URL}#website"
+ISPARTOF_WEBSITE = {"@type": "WebSite", "@id": WEBSITE_ID}
+
+
+def _website_node() -> dict:
+    return {
+        "@type": "WebSite",
+        "@id": WEBSITE_ID,
+        "name": "Awesome Python",
+        "url": SITE_URL,
+    }
+
+
+def _item_list_payload(entries: Sequence[TemplateEntry]) -> dict:
+    return {
+        "@type": "ItemList",
+        "numberOfItems": len(entries),
+        "itemListElement": [
+            {
+                "@type": "ListItem",
+                "position": i,
+                "name": entry["name"],
+                "url": entry["url"],
+            }
+            for i, entry in enumerate(entries, start=1)
+        ],
+    }
+
+
+def build_homepage_json_ld(entries: Sequence[TemplateEntry], total_categories: int) -> dict:
+    description = (
+        "An opinionated guide to the best Python frameworks, libraries, and tools. "
+        f"Explore {len(entries)} curated projects across {total_categories} categories, "
+        "from AI and agents to data science and web development."
+    )
+    return {
+        "@context": "https://schema.org",
+        "@graph": [
+            _website_node(),
+            {
+                "@type": "CollectionPage",
+                "@id": SITE_URL,
+                "name": "Awesome Python",
+                "url": SITE_URL,
+                "description": description,
+                "isPartOf": ISPARTOF_WEBSITE,
+                "mainEntity": _item_list_payload(entries),
+            },
+        ],
+    }
+
+
+def category_meta_description(name: str, entry_count: int, description: str) -> str:
+    count_sentence = f"Explore {entry_count} curated Python projects in {name}."
+    if description:
+        lead = description if description.endswith((".", "!", "?")) else f"{description}."
+        return f"{lead} {count_sentence}"
+    return f"{count_sentence} Part of the Awesome Python catalog."
+
+
+def build_category_json_ld(name: str, url: str, description: str, entries: Sequence[TemplateEntry]) -> dict:
+    return {
+        "@context": "https://schema.org",
+        "@graph": [
+            _website_node(),
+            {
+                "@type": "CollectionPage",
+                "@id": url,
+                "name": f"{name} Python Libraries",
+                "url": url,
+                "description": description,
+                "isPartOf": ISPARTOF_WEBSITE,
+                "mainEntity": _item_list_payload(entries),
+            },
+        ],
+    }
+
+
 def category_path(category: ParsedSection) -> str:
     return f"/categories/{category['slug']}/"
 
@@ -378,6 +456,10 @@ def build(repo_root: Path) -> None:
     site_dir.mkdir(parents=True)
 
     filter_urls_json = json.dumps(filter_urls, sort_keys=True, ensure_ascii=False).replace("</", "<\\/")
+    homepage_json_ld = json.dumps(
+        build_homepage_json_ld(entries, len(categories)),
+        ensure_ascii=False,
+    ).replace("</", "<\\/")
 
     tpl_index = env.get_template("index.html")
     (site_dir / "index.html").write_text(
@@ -393,6 +475,7 @@ def build(repo_root: Path) -> None:
             category_urls=category_urls,
             filter_urls=filter_urls,
             filter_urls_json=filter_urls_json,
+            homepage_json_ld=homepage_json_ld,
         ),
         encoding="utf-8",
     )
@@ -411,10 +494,20 @@ def build(repo_root: Path) -> None:
         group_categories: Sequence[ParsedSection] | None = None,
     ) -> None:
         page_dir.mkdir(parents=True, exist_ok=True)
+        category_description = category_meta_description(
+            category["name"], len(entries), category["description"]
+        )
+        category_json_ld = json.dumps(
+            build_category_json_ld(
+                category["name"], category_url, category_description, entries
+            ),
+            ensure_ascii=False,
+        ).replace("</", "<\\/")
         (page_dir / "index.html").write_text(
             tpl_category.render(
                 category=category,
                 category_url=category_url,
+                category_description=category_description,
                 entries=entries,
                 total_categories=len(categories),
                 category_urls=category_urls,
@@ -423,6 +516,7 @@ def build(repo_root: Path) -> None:
                 filter_urls_json=filter_urls_json,
                 parent_category=parent_category,
                 group_categories=group_categories,
+                category_json_ld=category_json_ld,
             ),
             encoding="utf-8",
         )
diff --git a/website/static/main.js b/website/static/main.js
index 5da89699..d5b337b3 100644
--- a/website/static/main.js
+++ b/website/static/main.js
@@ -113,7 +113,12 @@ document
 
 rows.forEach(function (row, i) {
   row._origIndex = i;
-  row._expandRow = row.nextElementSibling;
+  let next = row.nextElementSibling;
+  if (next && next.classList.contains("desc-row")) {
+    row._descRow = next;
+    next = next.nextElementSibling;
+  }
+  row._expandRow = next;
 });
 
 function collapseAll() {
@@ -127,6 +132,7 @@ function collapseAll() {
 
 function applyFilters() {
   const query = searchInput ? searchInput.value.toLowerCase().trim() : "";
+  const descRowsVisible = !isIndexDocument || activeFilter !== null;
   let visibleCount = 0;
 
   collapseAll();
@@ -142,9 +148,11 @@ function applyFilters() {
     if (show && query) {
       if (!row._searchText) {
         let text = row.textContent.toLowerCase();
-        const next = row.nextElementSibling;
-        if (next && next.classList.contains("expand-row")) {
-          text += " " + next.textContent.toLowerCase();
+        if (row._descRow) {
+          text += " " + row._descRow.textContent.toLowerCase();
+        }
+        if (row._expandRow) {
+          text += " " + row._expandRow.textContent.toLowerCase();
         }
         row._searchText = text;
       }
@@ -152,6 +160,12 @@ function applyFilters() {
     }
 
     if (row.hidden !== !show) row.hidden = !show;
+    if (row._descRow) {
+      const descHidden = !show || !descRowsVisible;
+      if (row._descRow.hidden !== descHidden) {
+        row._descRow.hidden = descHidden;
+      }
+    }
 
     if (show) {
       visibleCount++;
@@ -262,7 +276,8 @@ function sortRows() {
   const frag = document.createDocumentFragment();
   arr.forEach(function (row) {
     frag.appendChild(row);
-    frag.appendChild(row._expandRow);
+    if (row._descRow) frag.appendChild(row._descRow);
+    if (row._expandRow) frag.appendChild(row._expandRow);
   });
   tbody.appendChild(frag);
   applyFilters();
@@ -291,7 +306,11 @@ if (tbody) {
     // Don't toggle if clicking a link or tag button
     if (e.target.closest("a") || e.target.closest(".tag")) return;
 
-    const row = e.target.closest("tr.row");
+    let row = e.target.closest("tr.row");
+    if (!row) {
+      const descRow = e.target.closest("tr.desc-row");
+      if (descRow) row = descRow.previousElementSibling;
+    }
     if (!row) return;
 
     const isOpen = row.classList.contains("open");
@@ -328,7 +347,7 @@ tags.forEach(function (tag) {
       }
       applyFilters();
     } else if (url) {
-      window.location.href = url;
+      window.location.href = url + "#library-index";
     }
   });
 });
diff --git a/website/static/style.css b/website/static/style.css
index 53604de1..bbdac357 100644
--- a/website/static/style.css
+++ b/website/static/style.css
@@ -788,6 +788,11 @@ kbd {
   box-shadow: inset 3px 0 0 var(--accent);
 }
 
+.row:has(+ .desc-row:not([hidden])) td {
+  border-bottom-color: transparent;
+  padding-bottom: 0.35rem;
+}
+
 .row.open td {
   background: linear-gradient(180deg, var(--row-open-start), var(--row-open-end));
   border-bottom-color: transparent;
@@ -919,14 +924,66 @@ th[data-sort].sort-asc::after {
   transform: rotate(90deg);
 }
 
+.desc-row td {
+  padding-top: 0;
+  padding-bottom: 1rem;
+  border-bottom: 1px solid var(--line);
+  color: var(--ink-soft);
+  font-size: var(--text-sm);
+  line-height: 1.6;
+  text-wrap: pretty;
+  overflow-wrap: break-word;
+  transition:
+    background-color 180ms ease,
+    border-color 180ms ease;
+}
+
+.row:not(.open) + .desc-row td {
+  border-bottom: 1px solid var(--line);
+}
+
+.row + .desc-row {
+  cursor: pointer;
+}
+
+.row:not(.open):hover td,
+.row:not(.open):hover + .desc-row td {
+  background: var(--row-hover);
+}
+
+.row.open + .desc-row td {
+  background: linear-gradient(180deg, var(--row-open-start), var(--row-open-end));
+  border-bottom-color: transparent;
+}
+
+.desc-text {
+  max-width: none;
+}
+
+.desc-text a {
+  color: var(--accent-deep);
+}
+
+.desc-text a:hover {
+  color: var(--accent);
+  text-decoration: underline;
+  text-decoration-color: var(--accent-underline);
+  text-underline-offset: 0.2em;
+}
+
 .expand-row {
   display: none;
 }
 
+.row.open + .desc-row + .expand-row,
 .row.open + .expand-row {
   display: table-row;
 }
 
+.desc-row:not([hidden]) + .expand-row .expand-desc {
+  display: none;
+}
+
 .expand-row td {
   padding-top: 0.1rem;
   padding-bottom: 1.15rem;
@@ -993,7 +1050,7 @@ th[data-sort].sort-asc::after {
   background: var(--accent-soft);
   color: var(--accent-deep);
   padding: 0.14rem 0.48rem;
-  font-size: 0.6rem;
+  font-size: var(--text-xs);
   font-weight: 700;
   letter-spacing: 0.02em;
   cursor: pointer;
@@ -1426,8 +1483,8 @@ th[data-sort].sort-asc::after {
 
 .footer-left {
   display: flex;
-  flex-direction: column;
-  gap: 0.3rem;
+  align-items: center;
+  gap: 0.6rem;
 }
 
 .footer-brand {
@@ -1561,7 +1618,7 @@ th[data-sort].sort-asc::after {
 
   .tag {
     padding: 0.38rem 0.65rem;
-    font-size: 0.65rem;
+    font-size: var(--text-xs);
   }
 
   .table-wrap {
diff --git a/website/templates/base.html b/website/templates/base.html
index 22b56e98..72f246e1 100644
--- a/website/templates/base.html
+++ b/website/templates/base.html
@@ -53,6 +53,7 @@
       gtag("js", new Date());
       gtag("config", "G-0LMLYE0HER");
     </script>
+    {% block extra_head %}{% endblock %}
   </head>
   <body>
     <a href="#content" class="skip-link">Skip to content</a>
@@ -69,7 +70,9 @@
 
     <footer class="footer">
       <div class="footer-left">
-        <span class="footer-brand">Awesome Python</span>
+        <a href="/" class="footer-brand">Awesome Python</a>
+        <span class="footer-sep">/</span>
+        <a href="/sponsorship/">Sponsorship</a>
       </div>
       <div class="footer-links">
         <span
diff --git a/website/templates/category.html b/website/templates/category.html
index 799604d8..9ac72c34 100644
--- a/website/templates/category.html
+++ b/website/templates/category.html
@@ -1,8 +1,11 @@
 {% extends "base.html" %}
-{% block title %}{{ category.name }} Python Libraries | Awesome Python{% endblock %}
-{% block description %}Explore {{ entries | length }} curated Python projects in {{ category.name }}. {% if category.description %}{{ category.description }}{% else %}Part of the Awesome Python catalog.{% endif %}{% endblock %}
+{% block title %}{{ category.name }} Python Libraries - Awesome Python{% endblock %}
+{% block description %}{{ category_description }}{% endblock %}
 {% block canonical_url %}{{ category_url }}{% endblock %}
 {% block alternate_links %}{% endblock %}
+{% block extra_head %}
+<script type="application/ld+json">{{ category_json_ld | safe }}</script>
+{% endblock %}
 {% block header %}
 <header class="category-hero">
   <div class="hero-sheen" aria-hidden="true"></div>
@@ -169,9 +172,9 @@
           </td>
           <td class="col-cat">
             {% for subcat in entry.subcategories %}
-            <button class="tag{% if subcat.url == current_path %} active{% endif %}" data-value="{{ subcat.value }}" data-url="{{ subcat.url }}">
+            <a class="tag{% if subcat.url == current_path %} active{% endif %}" href="{{ subcat.url }}" data-value="{{ subcat.value }}" data-url="{{ subcat.url }}">
               {{ subcat.name }}
-            </button>
+            </a>
             {% endfor %}
             {% for cat in entry.categories %}
             <a
@@ -184,33 +187,41 @@
             {% endfor %}
             {% if entry.groups %}
             {% set group_url = filter_urls[entry.groups[0]] %}
-            <button
+            <a
               class="tag tag-group{% if group_url == current_path %} active{% endif %}"
+              href="{{ group_url }}"
               data-value="{{ entry.groups[0] }}"
               data-url="{{ group_url }}"
             >
               {{ entry.groups[0] }}
-            </button>
+            </a>
             {% endif %}
             {% if entry.source_type == 'Built-in' %}
-            <button
+            <a
               class="tag tag-source{% if '/categories/built-in/' == current_path %} active{% endif %}"
+              href="/categories/built-in/"
               data-value="Built-in"
               data-url="/categories/built-in/"
             >
               Built-in
-            </button>
+            </a>
             {% endif %}
           </td>
           <td class="col-arrow"><span class="arrow">&rarr;</span></td>
         </tr>
+        {% if entry.description %}
+        <tr class="desc-row" aria-hidden="true">
+          <td class="col-num"></td>
+          <td colspan="5">
+            <div class="desc-text">{{ entry.description | safe }}</div>
+          </td>
+        </tr>
+        {% endif %}
         <tr class="expand-row" id="expand-{{ loop.index }}">
           <td></td>
           <td colspan="4">
             <div class="expand-content">
-              {% if entry.description %}
-              <div class="expand-desc">{{ entry.description | safe }}</div>
-              {% endif %} {% if entry.also_see %}
+              {% if entry.also_see %}
               <div class="expand-also-see">
                 Also see: {% for see in entry.also_see %}<a
                   href="{{ see.url }}"
diff --git a/website/templates/index.html b/website/templates/index.html
index 3fa763e6..bf2abd21 100644
--- a/website/templates/index.html
+++ b/website/templates/index.html
@@ -1,4 +1,7 @@
 {% extends "base.html" %}
+{% block extra_head %}
+<script type="application/ld+json">{{ homepage_json_ld | safe }}</script>
+{% endblock %}
 {% block header %}
 <header class="hero">
   <div class="hero-sheen" aria-hidden="true"></div>
@@ -220,9 +223,9 @@
           </td>
           <td class="col-cat">
             {% for subcat in entry.subcategories %}
-            <button class="tag" data-value="{{ subcat.value }}" data-url="{{ subcat.url }}">
+            <a class="tag" href="{{ subcat.url }}" data-value="{{ subcat.value }}" data-url="{{ subcat.url }}">
               {{ subcat.name }}
-            </button>
+            </a>
             {% endfor %} {% for cat in entry.categories %}
             <a
               class="tag"
@@ -232,25 +235,35 @@
               >{{ cat }}</a
             >
             {% endfor %}
-            <button
+            <a
               class="tag tag-group"
+              href="{{ filter_urls[entry.groups[0]] }}"
               data-value="{{ entry.groups[0] }}"
               data-url="{{ filter_urls[entry.groups[0]] }}"
             >
               {{ entry.groups[0] }}
-            </button>
+            </a>
             {% if entry.source_type == 'Built-in' %}
-            <button
+            <a
               class="tag tag-source"
+              href="/categories/built-in/"
               data-value="Built-in"
               data-url="/categories/built-in/"
             >
               Built-in
-            </button>
+            </a>
             {% endif %}
           </td>
           <td class="col-arrow"><span class="arrow">&rarr;</span></td>
         </tr>
+        {% if entry.description %}
+        <tr class="desc-row" aria-hidden="true" hidden>
+          <td class="col-num"></td>
+          <td colspan="5">
+            <div class="desc-text">{{ entry.description | safe }}</div>
+          </td>
+        </tr>
+        {% endif %}
         <tr class="expand-row" id="expand-{{ loop.index }}">
           <td></td>
           <td colspan="4">
diff --git a/website/tests/test_build.py b/website/tests/test_build.py
index cc56342d..4d1dc469 100644
--- a/website/tests/test_build.py
+++ b/website/tests/test_build.py
@@ -268,8 +268,8 @@ class TestBuild:
 
         assert 'href="/categories/widgets/"' in index_html
         assert 'data-value="Widgets"' in index_html
-        assert parser.title.strip() == "Widgets Python Libraries | Awesome Python"
-        assert parser.meta_by_name["description"] == "Explore 2 curated Python projects in Widgets. Widget libraries. Also see awesome-widgets."
+        assert parser.title.strip() == "Widgets Python Libraries - Awesome Python"
+        assert parser.meta_by_name["description"] == "Widget libraries. Also see awesome-widgets. Explore 2 curated Python projects in Widgets."
         assert parser.links_by_rel["canonical"] == "https://awesome-python.com/categories/widgets/"
         assert parser.meta_by_property["og:url"] == "https://awesome-python.com/categories/widgets/"
         assert '<link rel="alternate" type="text/markdown" href="/index.md" />' not in category_html
@@ -471,6 +471,143 @@ class TestBuild:
         assert 'id="hero-category-heading">Browse by category</h2>' in html
         assert 'class="hero-category-link" href="/categories/ai-and-agents/"' in html
 
+    def test_index_contains_homepage_json_ld(self, tmp_path):
+        readme = (Path(__file__).parents[2] / "README.md").read_text(encoding="utf-8")
+        (tmp_path / "README.md").write_text(readme, encoding="utf-8")
+        self._copy_real_templates(tmp_path)
+
+        build(tmp_path)
+
+        parsed_groups = parse_readme(readme)
+        categories = [cat for group in parsed_groups for cat in group["categories"]]
+        entries = extract_entries(categories, parsed_groups)
+        html = (tmp_path / "website" / "output" / "index.html").read_text(encoding="utf-8")
+
+        marker = '<script type="application/ld+json">'
+        assert marker in html
+        start = html.index(marker) + len(marker)
+        end = html.index("</script>", start)
+        block = html[start:end]
+        assert "</script>" not in block
+        data = json.loads(block)
+
+        assert data["@context"] == "https://schema.org"
+        graph = {node["@type"]: node for node in data["@graph"]}
+        assert set(graph) == {"WebSite", "CollectionPage"}
+        assert graph["WebSite"]["url"] == "https://awesome-python.com/"
+        assert graph["WebSite"]["name"] == "Awesome Python"
+        assert graph["WebSite"]["@id"] == "https://awesome-python.com/#website"
+
+        collection = graph["CollectionPage"]
+        assert collection["@id"] == "https://awesome-python.com/"
+        assert collection["url"] == "https://awesome-python.com/"
+        assert collection["isPartOf"] == {"@type": "WebSite", "@id": graph["WebSite"]["@id"]}
+        expected_description = f"An opinionated guide to the best Python frameworks, libraries, and tools. Explore {len(entries)} curated projects across {len(categories)} categories, from AI and agents to data science and web development."
+        assert collection["description"] == expected_description
+
+        item_list = collection["mainEntity"]
+        assert item_list["@type"] == "ItemList"
+        assert item_list["numberOfItems"] == len(entries)
+        assert len(item_list["itemListElement"]) == len(entries)
+
+        positions = [item["position"] for item in item_list["itemListElement"]]
+        assert positions == list(range(1, len(entries) + 1))
+        assert all(item["@type"] == "ListItem" for item in item_list["itemListElement"])
+        assert all(item["url"].startswith(("http://", "https://")) for item in item_list["itemListElement"])
+
+        rendered_names = {item["name"] for item in item_list["itemListElement"]}
+        rendered_urls = {item["url"] for item in item_list["itemListElement"]}
+        assert rendered_names == {e["name"] for e in entries}
+        assert rendered_urls == {e["url"] for e in entries}
+
+    def test_category_page_contains_json_ld(self, tmp_path):
+        readme = textwrap.dedent("""\
+            # Awesome Python
+
+            Intro.
+
+            ---
+
+            **Tools**
+
+            ## Widgets
+
+            _Widget libraries._
+
+            - [w1](https://example.com/w1) - A widget.
+            - [w2](https://github.com/owner/w2) - A starred widget.
+
+            # Contributing
+
+            Help!
+        """)
+        (tmp_path / "README.md").write_text(readme, encoding="utf-8")
+        self._copy_real_templates(tmp_path)
+        build(tmp_path)
+
+        category_html = (tmp_path / "website" / "output" / "categories" / "widgets" / "index.html").read_text(encoding="utf-8")
+        marker = '<script type="application/ld+json">'
+        assert marker in category_html
+        start = category_html.index(marker) + len(marker)
+        end = category_html.index("</script>", start)
+        block = category_html[start:end]
+        assert "</script>" not in block
+        data = json.loads(block)
+
+        assert data["@context"] == "https://schema.org"
+        graph = {node["@type"]: node for node in data["@graph"]}
+        assert set(graph) == {"WebSite", "CollectionPage"}
+        assert graph["WebSite"]["@id"] == "https://awesome-python.com/#website"
+        collection = graph["CollectionPage"]
+        assert collection["name"] == "Widgets Python Libraries"
+        assert collection["@id"] == "https://awesome-python.com/categories/widgets/"
+        assert collection["url"] == "https://awesome-python.com/categories/widgets/"
+        assert collection["description"] == "Widget libraries. Explore 2 curated Python projects in Widgets."
+        assert collection["isPartOf"] == {"@type": "WebSite", "@id": "https://awesome-python.com/#website"}
+
+        item_list = collection["mainEntity"]
+        assert item_list["@type"] == "ItemList"
+        assert item_list["numberOfItems"] == 2
+        names = {item["name"] for item in item_list["itemListElement"]}
+        urls = {item["url"] for item in item_list["itemListElement"]}
+        assert names == {"w1", "w2"}
+        assert urls == {"https://example.com/w1", "https://github.com/owner/w2"}
+        positions = sorted(item["position"] for item in item_list["itemListElement"])
+        assert positions == [1, 2]
+
+    def test_group_page_falls_back_to_default_description_in_json_ld(self, tmp_path):
+        readme = textwrap.dedent("""\
+            # T
+
+            ---
+
+            **AI & ML**
+
+            ## Deep Learning
+
+            - [dl1](https://example.com/dl1) - DL.
+
+            # Contributing
+
+            Done.
+        """)
+        self._copy_real_templates(tmp_path)
+        (tmp_path / "README.md").write_text(readme, encoding="utf-8")
+        build(tmp_path)
+
+        group_html = (tmp_path / "website" / "output" / "categories" / "ai-ml" / "index.html").read_text(encoding="utf-8")
+        marker = '<script type="application/ld+json">'
+        start = group_html.index(marker) + len(marker)
+        end = group_html.index("</script>", start)
+        data = json.loads(group_html[start:end])
+
+        graph = {node["@type"]: node for node in data["@graph"]}
+        collection = graph["CollectionPage"]
+        assert collection["name"] == "AI & ML Python Libraries"
+        assert collection["@id"] == "https://awesome-python.com/categories/ai-ml/"
+        assert collection["url"] == "https://awesome-python.com/categories/ai-ml/"
+        assert collection["description"] == "Explore 1 curated Python projects in AI & ML. Part of the Awesome Python catalog."
+
     def test_build_creates_subcategory_pages(self, tmp_path):
         readme = textwrap.dedent("""\
             # T