docs: add quick start and user guides

packages/ui/app-shell.css

@@ -114,11 +114,92 @@ p {
   background: rgb(255 197 110 / 8%);
 }
 
+.workflow-card {
+  margin-top: clamp(42px, 7vw, 72px);
+  padding: clamp(22px, 4vw, 34px);
+  border: 1px solid var(--line);
+  border-radius: 22px;
+  background: rgb(255 255 255 / 2%);
+}
+
+.workflow-card__heading {
+  display: flex;
+  align-items: end;
+  justify-content: space-between;
+  gap: 24px;
+}
+
+.workflow-card__heading h2,
+.quick-start-card h2 {
+  margin-bottom: 0;
+  letter-spacing: -0.035em;
+}
+
+.workflow-card__heading a,
+.quick-start-card a {
+  color: var(--mint);
+  font-size: 0.84rem;
+  font-weight: 700;
+  text-decoration: none;
+}
+
+.workflow-list {
+  display: grid;
+  grid-template-columns: repeat(4, minmax(0, 1fr));
+  gap: 10px;
+  margin: 24px 0 16px;
+  padding: 0;
+  list-style: none;
+  counter-reset: workflow;
+}
+
+.workflow-list li {
+  position: relative;
+  min-height: 104px;
+  padding: 18px;
+  border: 1px solid rgb(101 242 191 / 18%);
+  border-radius: 14px;
+  background: rgb(101 242 191 / 5%);
+  counter-increment: workflow;
+}
+
+.workflow-list li::before {
+  display: block;
+  margin-bottom: 18px;
+  color: var(--mint);
+  content: "0" counter(workflow);
+  font-size: 0.7rem;
+  font-weight: 760;
+  letter-spacing: 0.1em;
+}
+
+.workflow-list strong,
+.workflow-list span {
+  display: block;
+}
+
+.workflow-list strong {
+  font-size: 0.9rem;
+}
+
+.workflow-list span {
+  margin-top: 6px;
+  color: var(--muted);
+  font-size: 0.78rem;
+}
+
+.workflow-note {
+  margin-bottom: 0;
+  color: var(--muted);
+  font-size: 0.82rem;
+  line-height: 1.65;
+}
+
 .launcher-grid {
   display: grid;
   grid-template-columns: repeat(2, minmax(0, 1fr));
   gap: 18px;
-  margin-top: clamp(56px, 9vw, 104px);
+  margin-top: 18px;
 }
 
 .launcher-card {
@@ -181,6 +262,30 @@ p {
   color: var(--cyan);
 }
 
+.quick-start-grid {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 18px;
+  margin-top: 18px;
+}
+
+.quick-start-card {
+  padding: clamp(22px, 4vw, 32px);
+  border: 1px solid var(--line);
+  border-radius: 20px;
+  background: var(--surface);
+}
+
+.quick-start-card p:not(.eyebrow) {
+  margin: 18px 0;
+  color: var(--muted);
+  line-height: 1.7;
+}
+
+.quick-start-card strong {
+  color: var(--text);
+}
+
 .landing-footer {
   display: flex;
   gap: 10px;
@@ -259,10 +364,21 @@ p {
 }
 
 @media (max-width: 720px) {
-  .launcher-grid {
+  .launcher-grid,
+  .quick-start-grid,
+  .workflow-list {
     grid-template-columns: 1fr;
   }
 
+  .workflow-card__heading {
+    align-items: start;
+    flex-direction: column;
+  }
+
+  .workflow-list li {
+    min-height: auto;
+  }
+
   .launcher-card {
     min-height: 260px;
   }