feat: style 404 page (#649)

close #649

src/client/theme-default/NotFound.vue

@@ -2,23 +2,83 @@
 import { useData } from 'vitepress'
 
 const { site } = useData()
-
-const msgs = [
-  `There's nothing here.`,
-  `How did we get here?`,
-  `That's a Four-Oh-Four.`,
-  `Looks like we've got some broken links.`
-]
-
-function getMsg() {
-  return msgs[Math.floor(Math.random() * msgs.length)]
-}
 </script>
 
 <template>
   <div class="NotFound">
-    <h1>404</h1>
-    <blockquote>{{ getMsg() }}</blockquote>
-    <a :href="site.base" aria-label="go to home">Take me home.</a>
+    <p class="code">404</p>
+    <h1 class="title">PAGE NOT FOUND</h1>
+    <div class="divider" />
+    <blockquote class="quote">
+      But if you don't change your direction, and if you keep looking, you may end up where you are heading.
+    </blockquote>
+
+    <div class="action">
+      <a class="link" :href="site.base" aria-label="go to home">
+        Take me home
+      </a>
+    </div>
   </div>
 </template>
+
+<style scoped>
+.NotFound {
+  padding: 64px 24px 96px;
+  text-align: center;
+}
+
+@media (min-width: 768px) {
+  .NotFound {
+    padding: 96px 32px 168px;
+  }
+}
+
+.code {
+  line-height: 64px;
+  font-size: 64px;
+  font-weight: 600;
+}
+
+.title {
+  padding-top: 12px;
+  letter-spacing: 2px;
+  line-height: 20px;
+  font-size: 20px;
+  font-weight: 700;
+}
+
+.divider {
+  margin: 24px auto 18px;
+  width: 64px;
+  height: 1px;
+  background-color: var(--vp-c-divider)
+}
+
+.quote {
+  margin: 0 auto;
+  max-width: 256px;
+  font-size: 14px;
+  font-weight: 500;
+  color: var(--vp-c-text-2);
+}
+
+.action {
+  padding-top: 20px;
+}
+
+.link {
+  display: inline-block;
+  border: 1px solid var(--vp-c-brand);
+  border-radius: 16px;
+  padding: 3px 16px;
+  font-size: 14px;
+  font-weight: 500;
+  color: var(--vp-c-brand);
+  transition: border-color 0.25s, color .25s;
+}
+
+.link:hover {
+  border-color: var(--vp-c-brand-dark);
+  color: var(--vp-c-brand-dark);
+}
+</style>

src/client/theme-default/styles/base.css

@@ -92,6 +92,10 @@ ul {
   padding: 0;
 }
 
+blockquote {
+  margin: 0;
+}
+
 pre,
 code,
 kbd,