website: refine styles for index and hub

website/landing/css/style.css

@@ -1,4 +1,4 @@
-@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500&family=Inter+Tight:ital,wght@0,500;0,600;0,700;1,700&display=fallback');
+@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500&family=Inter+Tight:ital,wght@0,500;0,600;0,700;1,700&family=Caveat:wght@600&display=fallback');
 
 @import 'tailwindcss/base';
 @import 'tailwindcss/components';
@@ -13,3 +13,47 @@
 [x-cloak=""] {
     display: none;
 }
+
+/* Smooth in-page anchor scrolling, disabled for users who prefer reduced motion. */
+html {
+    scroll-behavior: smooth;
+}
+
+@media (prefers-reduced-motion: reduce) {
+    html {
+        scroll-behavior: auto;
+    }
+}
+
+.text-balance {
+    text-wrap: balance;
+}
+/* Handwritten margin notes. */
+.hw-note {
+    font-family: 'Caveat', cursive;
+    font-weight: 600;
+    font-size: 1.5rem;
+    line-height: 1.2;
+}
+
+/* A hand-swiped stroke with uneven rounded edges. */
+.marker-red {
+    position: relative;
+    white-space: nowrap;
+    color: #fff;
+    isolation: isolate;
+}
+
+.marker-red::before {
+    content: "";
+    position: absolute;
+    z-index: -1;
+    inset: 0.08em -0.18em -0.02em -0.14em;
+    background: linear-gradient(100deg,
+    rgba(220, 38, 38, 0.82) 0%,
+    rgba(239, 68, 68, 0.95) 28%,
+    rgba(225, 29, 72, 0.9) 72%,
+    rgba(220, 38, 38, 0.88) 100%);
+    border-radius: 0.3em 0.5em 0.4em 0.6em;
+    transform: skew(-10deg) rotate(-0.5deg);
+}