Restructure to classic static-site layout, add project-card component, fix bugs

- Move wwwroot/ to public/ with assets/ grouping (css, js, img, fonts, vid)
- Inline section includes into index.html, drop runtime fetch loading
- Add project-card web component to replace repeated project markup
- Fix IntersectionObserver options placement bug in nav highlight
- Fix @font-face syntax, invalid 5-digit hex colors, 75x border-radius typo
- Remove dead css link (home.css), unused purple/orange color vars
- Fix typos, replace inline styles with classes, serve favicon

public/assets/css/douwco.css

@@ -0,0 +1,36 @@
+@font-face {
+    font-family: 'Righteous';
+    src: url('/assets/fonts/Righteous-Regular.ttf') format('truetype');
+    font-display: swap;
+}
+
+@font-face {
+    font-family: 'Montserrat';
+    src: url('/assets/fonts/Montserrat-Regular.ttf') format('truetype');
+    font-display: swap;
+}
+
+@font-face {
+    font-family: 'Montserrat';
+    src: url('/assets/fonts/Montserrat-Bold.ttf') format('truetype');
+    font-weight: bold;
+    font-display: swap;
+}
+
+:root {
+    --background-clr: #283e3e;
+    --background-accent-clr: #324f4f;
+    --blue-clr: #47bcdf;
+    --green-clr: #6ede9a;
+    --white-clr: #ffffff;
+}
+
+body {
+    font-family: 'Montserrat', sans-serif;
+    background-color: var(--background-clr);
+    color: var(--white-clr);
+}
+
+.title {
+    font-family: 'Righteous', sans-serif;
+}