From 4b02e57f7741081cabd85d50d31c7ed7de3a60c0 Mon Sep 17 00:00:00 2001
From: Xianpeng Shen <xianpeng.shen@gmail.com>
Date: Sun, 18 Oct 2026 22:44:35 +0300
Subject: [PATCH 1/5] fix: absolute baseURL, robots.txt and canonical so Google
 can read the sitemap

With baseURL '/' the sitemap index listed '/en/sitemap.xml' and
'/zh/sitemap.xml', and every page entry was a bare path. Search Console
reports the sitemap as "Couldn't fetch" and has indexed only the home page.
og:url was '/' and there was no canonical.

- baseURL is https://devops-maturity.github.io/, so the sitemap, og:url and
  asset URLs are absolute (hugo server still uses its own address).
- static/robots.txt allows everything and names both sitemaps: this site's
  and the docs site's at /devops-maturity/sitemap.xml.
- head.html adds rel=canonical and hreflang links between the English and
  Chinese pages.
---
 config.yaml                                       | 5 ++++-
 static/robots.txt                                 | 5 +++++
 themes/devops-maturity/layouts/partials/head.html | 6 ++++++
 3 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 static/robots.txt

diff --git a/config.yaml b/config.yaml
index 558ff8c..b02772d 100644
--- a/config.yaml
+++ b/config.yaml
@@ -1,4 +1,7 @@
-baseURL: '/'
+# Absolute, so the sitemap, canonical and og:url carry full URLs. With '/'
+# the sitemap index listed '/en/sitemap.xml' and Search Console could not
+# fetch it. `hugo server` still overrides this with its own address.
+baseURL: 'https://devops-maturity.github.io/'
 languageCode: en-us
 theme: devops-maturity
 # defaultContentLanguageInSubdir: true
diff --git a/static/robots.txt b/static/robots.txt
new file mode 100644
index 0000000..1201781
--- /dev/null
+++ b/static/robots.txt
@@ -0,0 +1,5 @@
+User-agent: *
+Allow: /
+
+Sitemap: https://devops-maturity.github.io/sitemap.xml
+Sitemap: https://devops-maturity.github.io/devops-maturity/sitemap.xml
diff --git a/themes/devops-maturity/layouts/partials/head.html b/themes/devops-maturity/layouts/partials/head.html
index 787dbb4..9deab41 100644
--- a/themes/devops-maturity/layouts/partials/head.html
+++ b/themes/devops-maturity/layouts/partials/head.html
@@ -13,6 +13,12 @@
 
   <title>{{ .Param "Title" }}</title>
   <meta name="description" content="{{ .Param "Description" }}"/>
+  <link rel="canonical" href="{{ .Permalink }}">
+  {{- if .IsTranslated }}
+  {{- range .AllTranslations }}
+  <link rel="alternate" hreflang="{{ .Lang }}" href="{{ .Permalink }}">
+  {{- end }}
+  {{- end }}
   <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1,maximum-scale=1,user-scalable=no">
 
   <!-- Twitter Card data -->

From ebfeb9e0eec197e4317e5e4e7381f614da3de376 Mon Sep 17 00:00:00 2001
From: Xianpeng Shen <xianpeng.shen@gmail.com>
Date: Sun, 18 Oct 2026 22:44:40 +0300
Subject: [PATCH 2/5] feat: a Get started button and copyable install and
 Action snippets on the home page
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The home page's first screen offered Quick Summary, Full Specification and
Contribute, and nothing that leads to using the tool. In 16 months GA has
recorded 20 views of /enterprise/ and 2 clicks on a GitHub link, and the
docs site is not linked from here at all.

- "Get started" ("开始使用") opens the docs quick start, as the primary
  button.
- Below the buttons: `pip install devops-maturity` and the
  devops-maturity-action step, each with a Copy button. The step pins
  @v1.0.0, the action's only tag (there is no v1 tag yet).
- scripts.html reports copy_install (method: button | select), click_action
  (method: button | select | link) and click_docs (placement, link_url).
  It is inline so it needs no bundle rebuild.

style.css is rebuilt from the SCSS with the theme's npm run css:build; the
same command reproduces the committed file byte for byte before this change.
---
 config.yaml                                   | 31 ++++++
 .../layouts/partials/scripts.html             | 78 +++++++++++++++
 .../layouts/partials/welcome.html             | 29 +++++-
 .../static/css/scss/components/_try.scss      | 99 +++++++++++++++++++
 .../static/css/scss/style.scss                |  1 +
 themes/devops-maturity/static/css/style.css   |  2 +-
 6 files changed, 237 insertions(+), 3 deletions(-)
 create mode 100644 themes/devops-maturity/static/css/scss/components/_try.scss

diff --git a/config.yaml b/config.yaml
index b02772d..1f69404 100644
--- a/config.yaml
+++ b/config.yaml
@@ -29,12 +29,28 @@ languages:
       title: DevOps Maturity Specification
       description: Assess, improve, and showcase your DevOps maturity — across teams and organizations.
       actions:
+      - label: Get started
+        url: 'https://devops-maturity.github.io/devops-maturity/getting-started/quickstart/'
+        primary: true
       - label: Quick Summary
         url: '#summary'
       - label: Full Specification
         url: '#specification'
       - label: Contribute
         url: 'https://github.com/devops-maturity/spec'
+      # Home page "try it" snippets (layouts/partials/welcome.html)
+      try:
+        install_label: Assess your project from the terminal
+        install: pip install devops-maturity
+        install_note: Then run `dm assess`. [Quick start](https://devops-maturity.github.io/devops-maturity/getting-started/quickstart/)
+        action_label: Or keep the badge current in CI
+        action: |-
+          - uses: devops-maturity/devops-maturity-action@v1.0.0
+            with:
+              github-token: ${{ secrets.GITHUB_TOKEN }}
+        action_note: Runs when `devops-maturity.yml` changes. [GitHub Action](https://github.com/devops-maturity/devops-maturity-action)
+        copy: Copy
+        copied: Copied
       # versions:
       #   current: v1.0.0
   zh:
@@ -44,9 +60,24 @@ languages:
       title: DevOps 成熟度规范
       description: 评估、改进和展示你的 DevOps 成熟度 — 跨团队和组织。
       actions:
+      - label: 开始使用
+        url: 'https://devops-maturity.github.io/devops-maturity/getting-started/quickstart/'
+        primary: true
       - label: 概述
         url: '#概述'
       - label: 完整规范
         url: '#规范'
       - label: 贡献
         url: 'https://github.com/devops-maturity/spec'
+      try:
+        install_label: 在终端里评估你的项目
+        install: pip install devops-maturity
+        install_note: 然后运行 `dm assess`。[快速上手（英文）](https://devops-maturity.github.io/devops-maturity/getting-started/quickstart/)
+        action_label: 或者在 CI 里自动更新徽章
+        action: |-
+          - uses: devops-maturity/devops-maturity-action@v1.0.0
+            with:
+              github-token: ${{ secrets.GITHUB_TOKEN }}
+        action_note: 在 `devops-maturity.yml` 变更时运行。[GitHub Action](https://github.com/devops-maturity/devops-maturity-action)
+        copy: 复制
+        copied: 已复制
diff --git a/themes/devops-maturity/layouts/partials/scripts.html b/themes/devops-maturity/layouts/partials/scripts.html
index 79131fb..9a06916 100644
--- a/themes/devops-maturity/layouts/partials/scripts.html
+++ b/themes/devops-maturity/layouts/partials/scripts.html
@@ -1 +1,79 @@
 <script src="{{ .Site.BaseURL }}js/bundle.js"></script>
+{{- /*
+  Copy buttons for the home page snippets (layouts/partials/welcome.html) and
+  the GA events that say whether visitors try the tool:
+
+  copy_install   the pip command was copied; method: button | select
+  click_action   the Action step was copied (method: button | select) or a
+                 link to the Action was followed (method: link)
+  click_docs     a link into the docs site (/devops-maturity/) was followed
+
+  Link events also carry placement (hero | content | other) and link_url.
+  Inline rather than in js/index.js so it needs no bundle rebuild.
+*/}}
+<script>
+  (function () {
+    function send(name, params) {
+      if (typeof window.gtag === 'function') window.gtag('event', name, params);
+    }
+
+    function copyWithSelection(text) {
+      var area = document.createElement('textarea');
+      area.value = text;
+      area.setAttribute('readonly', '');
+      area.style.position = 'absolute';
+      area.style.left = '-9999px';
+      document.body.appendChild(area);
+      area.select();
+      try { document.execCommand('copy'); } finally { document.body.removeChild(area); }
+    }
+
+    function copyText(text) {
+      if (navigator.clipboard && window.isSecureContext) {
+        return navigator.clipboard.writeText(text).catch(function () { copyWithSelection(text); });
+      }
+      copyWithSelection(text);
+      return Promise.resolve();
+    }
+
+    document.addEventListener('click', function (event) {
+      if (!event.target.closest) return;
+
+      var button = event.target.closest('[data-copy-target]');
+      if (button) {
+        var source = document.getElementById(button.getAttribute('data-copy-target'));
+        var box = button.closest('[data-copy-event]');
+        if (!source) return;
+        var label = button.textContent;
+        copyText(source.textContent).then(function () {
+          button.textContent = button.getAttribute('data-copied') || label;
+          setTimeout(function () { button.textContent = label; }, 1500);
+        });
+        if (box) send(box.getAttribute('data-copy-event'), { method: 'button' });
+        return;
+      }
+
+      var a = event.target.closest('a[href]');
+      if (!a) return;
+      var url;
+      try { url = new URL(a.getAttribute('href'), location.href); } catch (e) { return; }
+      var placement = a.closest('.welcome') ? 'hero' : (a.closest('.markdown-body') ? 'content' : 'other');
+      var params = { placement: placement, link_url: url.href };
+      if (url.hostname === 'devops-maturity.github.io' && url.pathname.indexOf('/devops-maturity/') === 0) {
+        send('click_docs', params);
+      } else if (url.hostname === 'github.com' && /^\/(devops-maturity\/devops-maturity-action|marketplace\/actions\/devops-maturity)(\/|$)/i.test(url.pathname)) {
+        params.method = 'link';
+        send('click_action', params);
+      }
+    }, true);
+
+    // Selecting the text and copying it by hand counts too.
+    document.addEventListener('copy', function () {
+      var selection = document.getSelection();
+      var node = selection && selection.anchorNode;
+      var element = node && (node.nodeType === 1 ? node : node.parentElement);
+      var box = element && element.closest && element.closest('[data-copy-event]');
+      if (box) send(box.getAttribute('data-copy-event'), { method: 'select' });
+    });
+  })();
+</script>
diff --git a/themes/devops-maturity/layouts/partials/welcome.html b/themes/devops-maturity/layouts/partials/welcome.html
index 5eaa7e6..1519828 100644
--- a/themes/devops-maturity/layouts/partials/welcome.html
+++ b/themes/devops-maturity/layouts/partials/welcome.html
@@ -1,14 +1,39 @@
+{{- $try := and .IsHome (.Param "Try") -}}
 <section class="welcome">
-  <div class="container">
+  <div class="container{{ if $try }} welcome__container--try{{ end }}">
     <h1 class="welcome__title">{{.Param "Title"}}</h1>
     <p class="welcome__description">{{.Param "Description"}}</p>
     {{ if .Param "Actions" }}
     <div class="welcome__actions">
       {{ range .Param "Actions" }}
-      <a class="welcome__action" href="{{.url}}">{{.label}}</a>
+      <a class="welcome__action{{ if .primary }} welcome__action--primary{{ end }}" href="{{.url}}">{{.label}}</a>
       {{ end }}
     </div>
     {{ end }}
+    {{- /* Home page only: the two ways to start using the tool, each with a
+           copy button. Copy and link clicks are reported to GA by
+           layouts/partials/scripts.html (copy_install, click_action,
+           click_docs). Text comes from `try` in config.yaml per language. */}}
+    {{ with $try }}
+    <div class="try">
+      <div class="try__item" data-copy-event="copy_install">
+        <span class="try__label">{{ .install_label }}</span>
+        <div class="try__snippet">
+          <pre class="try__code" id="try-install">{{ .install }}</pre>
+          <button class="try__copy" type="button" data-copy-target="try-install" data-copied="{{ .copied }}">{{ .copy }}</button>
+        </div>
+        <span class="try__note">{{ .install_note | markdownify }}</span>
+      </div>
+      <div class="try__item" data-copy-event="click_action">
+        <span class="try__label">{{ .action_label }}</span>
+        <div class="try__snippet">
+          <pre class="try__code" id="try-action">{{ .action }}</pre>
+          <button class="try__copy" type="button" data-copy-target="try-action" data-copied="{{ .copied }}">{{ .copy }}</button>
+        </div>
+        <span class="try__note">{{ .action_note | markdownify }}</span>
+      </div>
+    </div>
+    {{ end }}
     <figure class="welcome__image">
       <img src='{{default "/img/logo.png"}}'>
     </figure>
diff --git a/themes/devops-maturity/static/css/scss/components/_try.scss b/themes/devops-maturity/static/css/scss/components/_try.scss
new file mode 100644
index 0000000..0e544bf
--- /dev/null
+++ b/themes/devops-maturity/static/css/scss/components/_try.scss
@@ -0,0 +1,99 @@
+// "Try it" block under the home page hero (layouts/partials/welcome.html):
+// the pip command and the GitHub Action step, each with a copy button.
+@use "./../abstracts/index";
+
+// The hero is a fixed 80vh; with the snippets it grows instead of overflowing.
+.welcome .welcome__container--try {
+  height: auto;
+  min-height: index.$welcome-height;
+  padding-top: index.$header-height + index.$gap-lg;
+  // the article card below is pulled up by $article-offset-top; clear it
+  padding-bottom: -(index.$article-offset-top) + index.$gap-lg;
+}
+
+.welcome__action--primary {
+  background-color: index.$color-neutral-light;
+  color: index.$color-primary;
+  font-weight: bold;
+
+  &:hover {
+    background-color: rgba(index.$color-neutral-light, .85);
+    color: index.$color-primary;
+  }
+}
+
+.try {
+  display: grid;
+  gap: index.$gap-md;
+  margin-top: index.$gap-sm;
+  max-width: 600px;
+
+  @include index.desktop {
+    width: 70%;
+  }
+
+  &__item {
+    display: flex;
+    flex-direction: column;
+    gap: index.$gap-sm;
+    min-width: 0;
+  }
+
+  &__label {
+    font-size: 14px;
+    font-weight: bold;
+    opacity: .9;
+  }
+
+  &__snippet {
+    position: relative;
+    display: flex;
+    align-items: flex-start;
+    gap: index.$gap-sm;
+    padding: 12px 12px 12px 16px;
+    border-radius: index.$radius-lg;
+    background: rgba(index.$color-neutral-dark, .28);
+    color: index.$color-neutral-light;
+  }
+
+  &__code {
+    flex: 1;
+    min-width: 0;
+    margin: 0;
+    font: 14px/1.6 SFMono-Regular, Menlo, Consolas, monospace;
+    // wrap long lines on phones instead of a scrollbar; the copy button
+    // copies the text as written
+    white-space: pre-wrap;
+    overflow-wrap: anywhere;
+    background: none;
+    color: inherit;
+  }
+
+  &__copy {
+    flex: none;
+    padding: 4px 10px;
+    border: 1px solid rgba(index.$color-neutral-light, .6);
+    border-radius: 50px;
+    background: transparent;
+    color: index.$color-neutral-light;
+    font: inherit;
+    font-size: 13px;
+    line-height: 1.5;
+    cursor: pointer;
+
+    &:hover,
+    &:focus-visible {
+      background: index.$color-neutral-light;
+      color: index.$color-primary;
+    }
+  }
+
+  &__note {
+    font-size: 14px;
+    opacity: .9;
+
+    a {
+      color: inherit;
+    }
+  }
+}
diff --git a/themes/devops-maturity/static/css/scss/style.scss b/themes/devops-maturity/static/css/scss/style.scss
index 7dfe9ef..11d2aca 100644
--- a/themes/devops-maturity/static/css/scss/style.scss
+++ b/themes/devops-maturity/static/css/scss/style.scss
@@ -5,6 +5,7 @@
 @use "components/dropdown";
 @use "components/banner-image";
 @use "components/enterprise-cta";
+@use "components/try";
 @use "themes/markdown";
 @use "themes/devops-maturity";
 @use "vendors/github-markdown-css";
diff --git a/themes/devops-maturity/static/css/style.css b/themes/devops-maturity/static/css/style.css
index bf80b82..047295f 100644
--- a/themes/devops-maturity/static/css/style.css
+++ b/themes/devops-maturity/static/css/style.css
@@ -1 +1 @@
-*{box-sizing:border-box;margin:0;padding:0;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-tap-highlight-color:rgba(0,0,0,0)}body{font:16px Helvetica,sans-serif;min-height:100vh;position:relative}.container{margin-left:auto;margin-right:auto;max-width:1024px;padding-left:24px;padding-right:24px;width:100%}.container.markdown-body{margin:0 auto}article,main{background-color:#fff}article{border-radius:8px;box-shadow:0 2px 10px 0 rgba(0,0,0,.03),0 2px 20px 10px rgba(0,0,0,.02);min-height:50vh;padding-bottom:24px;padding-top:24px;transform:translateY(-64px)}@media (min-width:1024px){.container{padding-left:48px;padding-right:48px}article{padding-bottom:40px;padding-top:40px}}.no-style-a{color:#fff;text-decoration:none}.header{left:0;position:absolute;top:12px;width:100%;z-index:10}.header .container{align-items:center;display:flex;font-size:.8em;font-weight:700;height:56px;justify-content:space-between;text-transform:uppercase}.header .logo{background-color:transparent;border:2px solid #fff;border-radius:50%;height:30px;width:30px}.header__menu{color:#fff;display:flex;list-style:none;margin-left:16px}.header__menu-item{margin-right:8px}.header__menu-item:last-child{margin-right:0}@media (max-width:349px){.header .container{align-items:flex-start;height:auto;margin-top:8px}.header__menu{align-items:flex-end;flex-direction:column;justify-content:flex-end;margin-top:-8px}.header__menu-item{margin-right:0}}.footer{margin:8px 0 72px}.footer .container{align-items:center;display:flex}.footer__license{margin-right:auto}.footer__license a{color:inherit;font-size:.7em;text-decoration:none}.footer__license a:hover{text-decoration:underline}.footer__logos{margin-left:auto}.footer__logo{display:flex}.footer .github{height:24px;width:24px}.welcome{background:#5b7965;background:linear-gradient(45deg,#5b7965,#f4c403);position:relative;z-index:0}.welcome .container{height:80vh}.welcome .container,.welcome .mini_container{color:#fff;display:flex;flex-direction:column;justify-content:center;min-height:450px;position:relative;z-index:2}.welcome .mini_container{margin-left:auto;margin-right:auto;max-width:1024px;padding-left:24px;padding-right:24px;width:100%}.welcome__title{font-size:2.6em;margin-bottom:8px}@media (max-width:349px){.welcome__title{word-break:break-all}}@media (min-width:1024px){.welcome__title{font-size:3.6em;width:85%}}.welcome__description{font-size:18px;width:100%}@media (min-width:1024px){.welcome__description{width:80%}}.welcome__actions{display:flex;flex-wrap:wrap;margin-top:72px}.welcome__action{border:1px solid #fff;border-radius:50px;color:#fff;line-height:1.5;margin-bottom:24px;margin-right:24px;min-width:-moz-fit-content;min-width:fit-content;padding:12px 16px;text-decoration:none;transition:background-color .3s ease,color .3s ease}.welcome__action:last-child{margin-right:0}.welcome__action:hover{background-color:#fff;color:#666}.welcome__image{display:none}@media (min-width:1024px){.welcome__image{align-items:center;display:flex;height:70%;justify-content:center;overflow:hidden;position:absolute;right:0;top:50%;transform:translateY(-50%);width:24%;z-index:-1}.welcome__image img{display:block;margin:auto;max-height:100%;max-width:200px}}@keyframes show{0%{opacity:0;transform:translate(-50%);visibility:hidden}to{opacity:1;transform:translate(-50%,8px);visibility:visible}}@keyframes hide{0%{opacity:1;transform:translate(-50%,8px);visibility:visible}to{opacity:0;transform:translate(-50%);visibility:hidden}}.dropdown{position:relative}.dropdown__label{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-color:transparent;border:none;border-radius:4px;color:inherit;display:block;font-size:inherit;outline:none;padding:12px 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\ No newline at end of file

From 7ab1406def550c4b32599b1b884d4196121b8720 Mon Sep 17 00:00:00 2001
From: Xianpeng Shen <xianpeng.shen@gmail.com>
Date: Mon, 19 Oct 2026 11:03:43 +0300
Subject: [PATCH 3/5] fix: the copy buttons no longer stick on "Copied"

The click handler read the button's label from textContent on every click.
A second click within the 1.5 s window therefore saved "Copied" as the label
to restore, and the button kept saying "Copied" from then on.

- Each button's label is read once when the script starts (data-label) and
  restored from there; a new copy restarts the 1.5 s timer.
- A second click within 1 s is ignored, so a double-click is one copy and
  one copy_install / click_action event, not two.
- The gtag call is wrapped in try/catch, as in conventional-branch, so a
  failing gtag no longer throws an uncaught error from the click handler.
---
 .../layouts/partials/scripts.html             | 23 ++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/themes/devops-maturity/layouts/partials/scripts.html b/themes/devops-maturity/layouts/partials/scripts.html
index 9a06916..71061dd 100644
--- a/themes/devops-maturity/layouts/partials/scripts.html
+++ b/themes/devops-maturity/layouts/partials/scripts.html
@@ -14,9 +14,21 @@
 <script>
   (function () {
     function send(name, params) {
-      if (typeof window.gtag === 'function') window.gtag('event', name, params);
+      if (typeof window.gtag !== 'function') return;
+      try {
+        window.gtag('event', name, params);
+      } catch (e) {
+        // Nothing to recover; the event is simply not counted.
+      }
     }
 
+    // Each button's own label, kept before any click can swap it for "Copied".
+    // Reading textContent on click instead would, on a second click inside the
+    // 1.5 s window, save "Copied" as the label to restore.
+    Array.prototype.forEach.call(document.querySelectorAll('[data-copy-target]'), function (button) {
+      button.setAttribute('data-label', button.textContent);
+    });
+
     function copyWithSelection(text) {
       var area = document.createElement('textarea');
       area.value = text;
@@ -44,10 +56,15 @@
         var source = document.getElementById(button.getAttribute('data-copy-target'));
         var box = button.closest('[data-copy-event]');
         if (!source) return;
-        var label = button.textContent;
+        // A double-click is one copy, not two copy events.
+        var now = Date.now();
+        if (now - (button.copiedAt || 0) < 1000) return;
+        button.copiedAt = now;
+        var label = button.getAttribute('data-label') || button.textContent;
         copyText(source.textContent).then(function () {
           button.textContent = button.getAttribute('data-copied') || label;
-          setTimeout(function () { button.textContent = label; }, 1500);
+          clearTimeout(button.restoreTimer);
+          button.restoreTimer = setTimeout(function () { button.textContent = label; }, 1500);
         });
         if (box) send(box.getAttribute('data-copy-event'), { method: 'button' });
         return;

From 8edcf4cbb1c49b7a5d9678c019d806f0bbbb8021 Mon Sep 17 00:00:00 2001
From: Xianpeng Shen <xianpeng.shen@gmail.com>
Date: Mon, 19 Oct 2026 11:03:43 +0300
Subject: [PATCH 4/5] fix: keep baseURL '/' so deploy previews load their own
 CSS and JS

The absolute baseURL made every page, including every Netlify deploy
preview, load https://devops-maturity.github.io/css/style.css and js/bundle.js
and link back to production. A preview therefore showed production's styles:
the new try block rendered unstyled, over the content below, and 533px wide
at 375px.

Same approach as conventional-branch/conventional-branch:

- baseURL is '/' again; params.canonicalBaseURL names production.
- head.html builds canonical, hreflang and og:url from canonicalBaseURL.
- Theme sitemap.xml and sitemapindex.xml prefix every <loc> (and the
  hreflang alternates) with canonicalBaseURL, since the sitemap protocol
  needs absolute URLs.

The sitemaps list exactly the same URLs and alternates as with the absolute
baseURL; static/robots.txt is unchanged.
---
 config.yaml                                   | 13 ++++++++----
 .../layouts/_default/sitemap.xml              | 21 +++++++++++++++++++
 .../layouts/_default/sitemapindex.xml         | 11 ++++++++++
 .../layouts/partials/head.html                | 12 ++++++++---
 4 files changed, 50 insertions(+), 7 deletions(-)
 create mode 100644 themes/devops-maturity/layouts/_default/sitemap.xml
 create mode 100644 themes/devops-maturity/layouts/_default/sitemapindex.xml

diff --git a/config.yaml b/config.yaml
index 1f69404..9e82cec 100644
--- a/config.yaml
+++ b/config.yaml
@@ -1,7 +1,7 @@
-# Absolute, so the sitemap, canonical and og:url carry full URLs. With '/'
-# the sitemap index listed '/en/sitemap.xml' and Search Console could not
-# fetch it. `hugo server` still overrides this with its own address.
-baseURL: 'https://devops-maturity.github.io/'
+# Stays '/' so a Netlify deploy preview serves its own CSS, JS and links rather
+# than production's. The URLs that must be absolute (sitemap <loc>, canonical,
+# hreflang, og:url) are built from params.canonicalBaseURL instead.
+baseURL: /
 languageCode: en-us
 theme: devops-maturity
 # defaultContentLanguageInSubdir: true
@@ -9,6 +9,11 @@ defaultContentLanguage: "en"
 
 # Global parameters
 params:
+  # Production host for the sitemap, canonical, hreflang and og:url. Always
+  # production, also on a deploy preview: a preview that named itself canonical
+  # would compete with the real site in the index.
+  canonicalBaseURL: 'https://devops-maturity.github.io/'
+
   license:
     title: License
     action:
diff --git a/themes/devops-maturity/layouts/_default/sitemap.xml b/themes/devops-maturity/layouts/_default/sitemap.xml
new file mode 100644
index 0000000..746c311
--- /dev/null
+++ b/themes/devops-maturity/layouts/_default/sitemap.xml
@@ -0,0 +1,21 @@
+{{ printf "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>" | safeHTML }}
+{{- /* As with sitemapindex.xml: <loc> has to be absolute, and baseURL is "/", so the host
+     comes from canonicalBaseURL rather than from Hugo's own permalinks. The hreflang
+     alternates are the ones Hugo's built-in template lists, made absolute the same way. */}}
+{{- $base := site.Params.canonicalBaseURL }}
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
+  xmlns:xhtml="http://www.w3.org/1999/xhtml">
+  {{- range where .Pages "Sitemap.Disable" "ne" true }}
+  <url>
+    <loc>{{ printf "%s%s" $base (strings.TrimPrefix "/" .RelPermalink) }}</loc>
+    {{- if not .Lastmod.IsZero }}
+    <lastmod>{{ safeHTML ( .Lastmod.Format "2006-01-02T15:04:05-07:00" ) }}</lastmod>
+    {{- end }}
+    {{- if .IsTranslated }}
+    {{- range .AllTranslations }}
+    <xhtml:link rel="alternate" hreflang="{{ .Lang }}" href="{{ printf "%s%s" $base (strings.TrimPrefix "/" .RelPermalink) }}"/>
+    {{- end }}
+    {{- end }}
+  </url>
+  {{- end }}
+</urlset>
diff --git a/themes/devops-maturity/layouts/_default/sitemapindex.xml b/themes/devops-maturity/layouts/_default/sitemapindex.xml
new file mode 100644
index 0000000..7fde4a8
--- /dev/null
+++ b/themes/devops-maturity/layouts/_default/sitemapindex.xml
@@ -0,0 +1,11 @@
+{{ printf "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>" | safeHTML }}
+{{- /* The sitemap protocol requires an absolute <loc>, and baseURL is "/" so that a deploy
+     preview serves its own assets. Hugo's built-in template would emit "/en/sitemap.xml",
+     which Search Console cannot fetch, so the host is prefixed explicitly here. */}}
+<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  {{- range . }}
+  <sitemap>
+    <loc>{{ printf "%s%s" .Params.canonicalBaseURL (strings.TrimPrefix "/" .SitemapAbsURL) }}</loc>
+  </sitemap>
+  {{- end }}
+</sitemapindex>
diff --git a/themes/devops-maturity/layouts/partials/head.html b/themes/devops-maturity/layouts/partials/head.html
index 9deab41..34e6998 100644
--- a/themes/devops-maturity/layouts/partials/head.html
+++ b/themes/devops-maturity/layouts/partials/head.html
@@ -11,12 +11,18 @@
   
   <link rel="stylesheet" href="{{ .Site.BaseURL }}css/style.css">
 
+  {{- /* baseURL is "/" so a deploy preview loads its own assets. canonical,
+         hreflang and og:url have to be absolute and always name production,
+         so they are built from canonicalBaseURL rather than .Permalink. */}}
+  {{- $base := .Site.Params.canonicalBaseURL -}}
+  {{- $canonical := printf "%s%s" $base (strings.TrimPrefix "/" .RelPermalink) }}
+
   <title>{{ .Param "Title" }}</title>
   <meta name="description" content="{{ .Param "Description" }}"/>
-  <link rel="canonical" href="{{ .Permalink }}">
+  <link rel="canonical" href="{{ $canonical }}">
   {{- if .IsTranslated }}
   {{- range .AllTranslations }}
-  <link rel="alternate" hreflang="{{ .Lang }}" href="{{ .Permalink }}">
+  <link rel="alternate" hreflang="{{ .Lang }}" href="{{ printf "%s%s" $base (strings.TrimPrefix "/" .RelPermalink) }}">
   {{- end }}
   {{- end }}
   <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1,maximum-scale=1,user-scalable=no">
@@ -29,7 +35,7 @@
   <!-- Open Graph data -->
   <meta property="og:title" content="{{ .Param "Title" }}"/>
   <meta property="og:type" content="article"/>
-  <meta property="og:url" content="{{ .Permalink }}"/>
+  <meta property="og:url" content="{{ $canonical }}"/>
   <meta property="og:description" content="{{ .Param "Description" }}"/>
   <meta property="og:site_name" content="{{ .Param "Title" }}"/>
 </head>

From 47f95f76e86ef26b91e6ac5afd4936c4e9c5ad6c Mon Sep 17 00:00:00 2001
From: Xianpeng Shen <xianpeng.shen@gmail.com>
Date: Mon, 19 Oct 2026 14:44:52 +0300
Subject: [PATCH 5/5] fix: stop listing the empty /categories/ and /tags/ pages
 in the sitemap

Nothing in content/ has tags or categories and the theme has no taxonomy
template, so Hugo built /categories/, /tags/, /zh/categories/ and /zh/tags/
as an index.xml only. Those URLs are 404s, yet both language sitemaps listed
them, and with the sitemap now readable by Search Console they would be
submitted.

disableKinds: ["taxonomy", "term"], as conventional-branch does. The four
directories and their four sitemap entries go; every other file in public/
is byte-identical (Hugo 0.128.0 extended, HUGO_ENVIRONMENT=deployment).
---
 config.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/config.yaml b/config.yaml
index 9e82cec..fdf82b0 100644
--- a/config.yaml
+++ b/config.yaml
@@ -4,6 +4,10 @@
 baseURL: /
 languageCode: en-us
 theme: devops-maturity
+# Nothing in content/ has tags or categories and the theme has no template for
+# them, so Hugo built /categories/ and /tags/ as an index.xml only: a 404 that
+# the sitemap still listed.
+disableKinds: ["taxonomy", "term"]
 # defaultContentLanguageInSubdir: true
 defaultContentLanguage: "en"