feat: establish Corp v1 steering documentation

src/components/HomepageFeatures/index.tsx

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+import type {ReactNode} from 'react';
+import clsx from 'clsx';
+import Heading from '@theme/Heading';
+import styles from './styles.module.css';
+
+type FeatureItem = {
+  title: string;
+  Svg: React.ComponentType<React.ComponentProps<'svg'>>;
+  description: ReactNode;
+};
+
+const FeatureList: FeatureItem[] = [
+  {
+    title: 'Easy to Use',
+    Svg: require('@site/static/img/undraw_docusaurus_mountain.svg').default,
+    description: (
+      <>
+        Docusaurus was designed from the ground up to be easily installed and
+        used to get your website up and running quickly.
+      </>
+    ),
+  },
+  {
+    title: 'Focus on What Matters',
+    Svg: require('@site/static/img/undraw_docusaurus_tree.svg').default,
+    description: (
+      <>
+        Docusaurus lets you focus on your docs, and we&apos;ll do the chores. Go
+        ahead and move your docs into the <code>docs</code> directory.
+      </>
+    ),
+  },
+  {
+    title: 'Powered by React',
+    Svg: require('@site/static/img/undraw_docusaurus_react.svg').default,
+    description: (
+      <>
+        Extend or customize your website layout by reusing React. Docusaurus can
+        be extended while reusing the same header and footer.
+      </>
+    ),
+  },
+];
+
+function Feature({title, Svg, description}: FeatureItem) {
+  return (
+    <div className={clsx('col col--4')}>
+      <div className="text--center">
+        <Svg className={styles.featureSvg} role="img" />
+      </div>
+      <div className="text--center padding-horiz--md">
+        <Heading as="h3">{title}</Heading>
+        <p>{description}</p>
+      </div>
+    </div>
+  );
+}
+
+export default function HomepageFeatures(): ReactNode {
+  return (
+    <section className={styles.features}>
+      <div className="container">
+        <div className="row">
+          {FeatureList.map((props, idx) => (
+            <Feature key={idx} {...props} />
+          ))}
+        </div>
+      </div>
+    </section>
+  );
+}

src/components/HomepageFeatures/styles.module.css

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+.features {
+  display: flex;
+  align-items: center;
+  padding: 2rem 0;
+  width: 100%;
+}
+
+.featureSvg {
+  height: 200px;
+  width: 200px;
+}

src/css/custom.css

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+@import url('https://cdn.jsdelivr.net/npm/geist@1.3.0/dist/fonts/geist-sans/style.css');
+@import url('https://cdn.jsdelivr.net/npm/geist@1.3.0/dist/fonts/geist-mono/style.css');
+
+:root {
+  --ifm-font-family-base: 'Geist', system-ui, sans-serif;
+  --ifm-font-family-monospace: 'Geist Mono', monospace;
+  --ifm-color-primary: #2563eb;
+  --ifm-color-primary-dark: #1d4ed8;
+  --ifm-color-primary-darker: #1e40af;
+  --ifm-color-primary-darkest: #1e3a8a;
+  --ifm-color-primary-light: #3b82f6;
+  --ifm-color-primary-lighter: #60a5fa;
+  --ifm-color-primary-lightest: #93c5fd;
+  --ifm-global-radius: 0;
+  --ifm-code-border-radius: 0;
+  --ifm-button-border-radius: 0;
+  --ifm-alert-border-radius: 0;
+}
+
+[data-theme='dark'] {
+  --ifm-background-color: #09090b;
+  --ifm-background-surface-color: #111113;
+  --ifm-color-primary: #60a5fa;
+  --ifm-color-content: #ededed;
+  --ifm-color-content-secondary: #a1a1aa;
+}
+
+.navbar {background: #09090b !important; border-bottom: 1px solid #27272a; box-shadow: none;}
+.navbar__title {letter-spacing: .08em; font-weight: 700;}
+.footer {border-top: 1px solid #27272a;}
+.button, code, pre, .card, .alert, .pagination-nav__link, .menu, input, select, textarea {border-radius: 0 !important;}
+table {display: table; width: 100%;}
+th {text-transform: uppercase; letter-spacing: .06em; font-size: .75rem;}