feat: add intentional reader routes

src/styles.css

@@ -2,6 +2,7 @@
   color: #1e3238;
   background: #dfe7e9;
   font-family: Inter, "Noto Sans JP", ui-sans-serif, system-ui, sans-serif;
+  color-scheme: light;
 }
 
 * {
@@ -12,6 +13,7 @@ body {
   min-width: 320px;
   min-height: 100vh;
   margin: 0;
+  background: #dfe7e9;
 }
 
 button,
@@ -19,17 +21,193 @@ input {
   font: inherit;
 }
 
-.landing {
-  width: min(42rem, calc(100% - 2rem));
-  margin: 15vh auto;
-  padding: 2rem;
+.app {
+  width: min(52rem, calc(100% - 2rem));
+  margin: clamp(2rem, 10vh, 6rem) auto;
+}
+
+.app-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+  padding: 0 0.25rem 0.75rem;
+}
+
+.brand {
+  margin: 0;
+  color: #70858a;
+  font-size: 0.7rem;
+  font-weight: 700;
+  letter-spacing: 0.2em;
+}
+
+.tabs {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(5.5rem, 1fr));
+  gap: 0.2rem;
+  padding: 0.2rem;
+  border: 1px solid #c1cfd2;
+  border-radius: 0.6rem;
+  background: #f8faf9;
+}
+
+.tabs a {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 0.45rem;
+  padding: 0.45rem 0.75rem;
+  border-radius: 0.4rem;
+  color: #70858a;
+  font-size: 0.82rem;
+  font-weight: 700;
+  text-decoration: none;
+}
+
+.tabs a[aria-current="page"] {
+  color: #f8faf9;
+  background: #1e3238;
+}
+
+.tabs a[aria-current="page"]::before {
+  width: 0.35rem;
+  height: 0.35rem;
+  border-radius: 50%;
+  background: currentColor;
+  content: "";
+}
+
+.tabs a:focus-visible,
+button:focus-visible,
+input:focus-visible {
+  outline: 3px solid #70858a;
+  outline-offset: 2px;
+}
+
+.reader {
+  padding: clamp(1.5rem, 5vw, 3rem);
   border: 1px solid #c1cfd2;
   border-radius: 1rem;
   background: #f8faf9;
 }
 
-.brand {
+.reader h1 {
+  max-width: 18ch;
+  margin: 0;
+  font-size: clamp(1.65rem, 5vw, 2.35rem);
+  font-weight: 650;
+  letter-spacing: -0.04em;
+  line-height: 1.2;
+}
+
+.intro {
+  margin: 0.75rem 0 2rem;
   color: #70858a;
-  font-size: 0.7rem;
-  letter-spacing: 0.2em;
+  line-height: 1.7;
+}
+
+.intent-form {
+  display: grid;
+  gap: 1.25rem;
+  max-width: 36rem;
+}
+
+.field {
+  display: grid;
+  gap: 0.5rem;
+  color: #1e3238;
+  font-size: 0.84rem;
+  font-weight: 700;
+}
+
+.field input {
+  width: 100%;
+  min-height: 2.8rem;
+  padding: 0.65rem 0.8rem;
+  border: 1px solid #c1cfd2;
+  border-radius: 0.5rem;
+  color: #1e3238;
+  background: #f8faf9;
+}
+
+.field input::placeholder {
+  color: #70858a;
+  font-weight: 400;
+}
+
+.field input[aria-invalid="true"] {
+  border-color: #70858a;
+}
+
+.field-error {
+  color: #1e3238;
+  font-size: 0.78rem;
+  font-weight: 600;
+}
+
+.segmented {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.75rem 1rem;
+  margin: 0;
+  padding: 0;
+  border: 0;
+}
+
+.segmented legend {
+  width: 100%;
+  margin-bottom: 0.1rem;
+  font-size: 0.84rem;
+  font-weight: 700;
+}
+
+.segmented label,
+.check {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.45rem;
+  font-size: 0.86rem;
+}
+
+.segmented input,
+.check input {
+  accent-color: #1e3238;
+}
+
+.intent-form button {
+  justify-self: start;
+  min-width: 7rem;
+  min-height: 2.7rem;
+  padding: 0.55rem 1rem;
+  border: 1px solid #1e3238;
+  border-radius: 0.5rem;
+  color: #f8faf9;
+  background: #1e3238;
+  font-weight: 700;
+  cursor: pointer;
+}
+
+@media (max-width: 36rem) {
+  .app {
+    width: min(100% - 1rem, 52rem);
+    margin-block: 1rem;
+  }
+
+  .app-header {
+    align-items: stretch;
+    flex-direction: column;
+  }
+
+  .tabs {
+    width: 100%;
+  }
+
+  .reader {
+    border-radius: 0.75rem;
+  }
+
+  .intent-form button {
+    justify-self: stretch;
+  }
 }