diff --git a/design-system/base.css b/design-system/base.css
index 2b74f61..b156c07 100644
--- a/design-system/base.css
+++ b/design-system/base.css
@@ -1,5 +1,5 @@
 :root {
-  --font-ui: Inter, Pretendard, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
+  --font-ui: 'Atkinson Hyperlegible', Pretendard, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
     'Segoe UI', sans-serif;
   --color-bg: #ffffff;
   --color-text: #162033;
diff --git a/index.html b/index.html
index f5945a2..fea419e 100644
--- a/index.html
+++ b/index.html
@@ -7,21 +7,59 @@
       name="description"
       content="popover, details, commandfor, dialog 등 native HTML만으로 구성하는 UI kit"
     />
+    <link rel="preconnect" href="https://fonts.googleapis.com" />
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
+    <link href="https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:ital,wght@0,400;0,700;1,400&display=swap" rel="stylesheet" />
     <link rel="icon" href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Crect width='64' height='64' rx='12' fill='%23ffffff'/%3E%3Cpath d='M16 18h32v10H16zM16 36h20v10H16z' fill='%23162033'/%3E%3C/svg%3E" />
     <title>Native HTML UI Kit</title>
     <link rel="stylesheet" href="/styles.css" />
   </head>
   <body>
+    <a class="skip-link" href="#menus">컴포넌트 예제로 건너뛰기</a>
     <header class="site-header">
       <a class="brand" href="#top">Native HTML UI Kit</a>
-      <nav aria-label="컴포넌트">
-        <a href="#menus">Menus</a>
-        <a href="#forms">Forms</a>
-        <a href="#selectors">Selectors</a>
-        <a href="#dialogs">Dialogs</a>
-      </nav>
+      <div class="header-actions">
+        <nav aria-label="컴포넌트">
+          <a href="#menus">Menus</a>
+          <a href="#forms">Forms</a>
+          <a href="#selectors">Selectors</a>
+          <a href="#dialogs">Dialogs</a>
+        </nav>
+        <button class="header-command" commandfor="component-finder" command="show-modal">빠른 참조</button>
+      </div>
     </header>
 
+    <dialog id="component-finder" class="command-dialog" aria-labelledby="component-finder-title">
+      <div class="command-dialog-content">
+        <div class="command-dialog-heading">
+          <div>
+            <p class="eyebrow">native command</p>
+            <h2 id="component-finder-title">컴포넌트 빠른 참조</h2>
+          </div>
+          <form class="command-dialog-dismiss" method="dialog">
+            <button class="dialog-close" value="close" aria-label="빠른 참조 닫기">닫기</button>
+          </form>
+        </div>
+        <label for="component-finder-input">
+          예제 이름 찾기
+          <input id="component-finder-input" type="search" list="quick-component-options" placeholder="예: dialog" />
+        </label>
+        <datalist id="quick-component-options">
+          <option value="Popover">메뉴와 도움말</option>
+          <option value="Form validation">입력 오류와 성공 상태</option>
+          <option value="Selectors">radio, checkbox, picker</option>
+          <option value="Dialog">commandfor와 modal</option>
+        </datalist>
+        <p class="field-hint">입력창은 브라우저 datalist 제안을 사용합니다. 상단 탐색 메뉴로 해당 예제를 확인할 수 있습니다.</p>
+        <ul class="command-links" aria-label="빠른 참조 항목">
+          <li><span>01</span> Popover와 메뉴</li>
+          <li><span>02</span> 입력 검증</li>
+          <li><span>03</span> 선택 컨트롤</li>
+          <li><span>04</span> Dialog와 accordion</li>
+        </ul>
+      </div>
+    </dialog>
+
     <main id="top">
       <section class="hero">
         <h1>브라우저가 이미 가진 UI 계약을 다시 씁니다.</h1>
@@ -31,6 +69,52 @@ <h1>브라우저가 이미 가진 UI 계약을 다시 씁니다.</h1>
         </p>
       </section>
 
+      <section id="interaction-map" class="component-grid" aria-labelledby="interaction-map-title">
+        <div class="section-copy">
+          <p class="eyebrow">keyboard map</p>
+          <h2 id="interaction-map-title">브라우저가 넘겨주는 상호작용</h2>
+          <p>각 예제가 제공하는 초점 이동과 닫기 동작을 같은 밀도로 비교합니다.</p>
+        </div>
+        <article class="component-card matrix-card">
+          <table class="interaction-matrix">
+            <caption>주요 native UI 동작</caption>
+            <thead>
+              <tr>
+                <th scope="col">요소</th>
+                <th scope="col">키보드</th>
+                <th scope="col">확인할 상태</th>
+              </tr>
+            </thead>
+            <tbody>
+              <tr>
+                <th scope="row">popover</th>
+                <td><kbd>Esc</kbd></td>
+                <td>열린 패널 닫기</td>
+              </tr>
+              <tr>
+                <th scope="row">details</th>
+                <td><kbd>Enter</kbd></td>
+                <td>요약 열기와 닫기</td>
+              </tr>
+              <tr>
+                <th scope="row">form</th>
+                <td><kbd>Tab</kbd></td>
+                <td>label과 오류 메시지</td>
+              </tr>
+              <tr>
+                <th scope="row">dialog</th>
+                <td><kbd>Esc</kbd></td>
+                <td>modal 닫기와 초점 복귀</td>
+              </tr>
+            </tbody>
+          </table>
+          <details class="matrix-note">
+            <summary>검토할 때 확인할 순서</summary>
+            <p>마우스 없이 Tab으로 진입하고, Enter와 Esc로 열고 닫은 뒤, 현재 위치를 보여주는 focus ring이 유지되는지 확인합니다.</p>
+          </details>
+        </article>
+      </section>
+
       <section id="menus" class="component-grid" aria-labelledby="menus-title">
         <div class="section-copy">
           <h2 id="menus-title">Menus & Popovers</h2>
diff --git a/styles.css b/styles.css
index a2cac18..ae80143 100644
--- a/styles.css
+++ b/styles.css
@@ -43,6 +43,25 @@
   select {
     font: inherit;
   }
+
+  .skip-link {
+    position: fixed;
+    top: 12px;
+    left: 12px;
+    z-index: 20;
+    transform: translateY(-160%);
+    border-radius: 6px;
+    padding: 10px 12px;
+    color: var(--color-primary-ink);
+    background: var(--color-primary);
+    font-size: 14px;
+    font-weight: 800;
+    transition: transform var(--motion-standard);
+  }
+
+  .skip-link:focus {
+    transform: translateY(0);
+  }
 }
 
 @layer layout {
@@ -65,6 +84,14 @@
     font-weight: 900;
   }
 
+  .header-actions {
+    display: flex;
+    align-items: center;
+    flex-wrap: wrap;
+    justify-content: flex-end;
+    gap: 14px;
+  }
+
   nav {
     display: flex;
     align-items: center;
@@ -158,6 +185,96 @@
     box-shadow: 0 10px 24px rgb(15 23 42 / 12%);
   }
 
+  .header-command,
+  .dialog-close {
+    min-height: 34px;
+    border: 1px solid var(--color-border-strong);
+    border-radius: 6px;
+    padding: 0 12px;
+    color: var(--color-text);
+    background: var(--color-surface);
+    box-shadow: none;
+    font-size: 13px;
+    font-weight: 800;
+  }
+
+  .header-command:hover,
+  .dialog-close:hover {
+    color: var(--color-primary-ink);
+    background: var(--color-primary);
+  }
+
+  .command-dialog {
+    width: min(560px, calc(100vw - 32px));
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius-frame);
+    padding: clamp(20px, 4vw, 30px);
+    background: var(--color-surface);
+    box-shadow: var(--shadow-popover);
+  }
+
+  .command-dialog::backdrop {
+    background: rgb(15 23 42 / 42%);
+    backdrop-filter: blur(3px);
+  }
+
+  .command-dialog-content {
+    display: grid;
+    gap: 18px;
+  }
+
+  .command-dialog-dismiss {
+    margin: 0;
+  }
+
+  .command-dialog-heading {
+    display: flex;
+    align-items: start;
+    justify-content: space-between;
+    gap: 18px;
+  }
+
+  .command-dialog-heading h2 {
+    margin: 0;
+  }
+
+  .command-dialog .eyebrow {
+    margin: 0 0 6px;
+    color: var(--color-focus);
+    font-size: 11px;
+    font-weight: 900;
+    text-transform: uppercase;
+  }
+
+  .command-links {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 8px;
+    margin: 0;
+    padding: 0;
+    color: var(--color-text);
+  }
+
+  .command-links li {
+    display: grid;
+    grid-template-columns: 28px minmax(0, 1fr);
+    gap: 8px;
+    align-items: center;
+    min-height: 48px;
+    border: 1px solid var(--color-border);
+    border-radius: 6px;
+    padding: 8px 10px;
+    font-size: 13px;
+    font-weight: 800;
+    list-style: none;
+  }
+
+  .command-links span {
+    color: var(--color-focus);
+    font-size: 11px;
+    font-variant-numeric: tabular-nums;
+  }
+
   .menu {
     width: 220px;
     border: 1px solid var(--color-border);
@@ -209,6 +326,70 @@
     gap: 14px;
   }
 
+  .matrix-card {
+    display: grid;
+    gap: 16px;
+  }
+
+  .interaction-matrix {
+    width: 100%;
+    border-collapse: collapse;
+    font-size: 13px;
+  }
+
+  .interaction-matrix caption {
+    margin-bottom: 10px;
+    color: var(--color-text);
+    text-align: left;
+    font-size: 16px;
+    font-weight: 900;
+  }
+
+  .interaction-matrix th,
+  .interaction-matrix td {
+    border-bottom: 1px solid var(--color-border);
+    padding: 11px 8px;
+    text-align: left;
+    vertical-align: middle;
+  }
+
+  .interaction-matrix thead th {
+    color: var(--color-muted);
+    font-size: 11px;
+  }
+
+  .interaction-matrix tbody th {
+    color: var(--color-text);
+    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+    font-size: 12px;
+  }
+
+  kbd {
+    display: inline-grid;
+    min-width: 28px;
+    place-items: center;
+    border: 1px solid var(--color-border-strong);
+    border-bottom-width: 2px;
+    border-radius: 4px;
+    padding: 2px 5px;
+    color: var(--color-text);
+    background: var(--color-surface-muted);
+    font-family: var(--font-ui);
+    font-size: 11px;
+    font-weight: 800;
+  }
+
+  .matrix-note {
+    background: var(--color-surface-muted);
+  }
+
+  .matrix-note p {
+    margin: 10px 0 0;
+    color: var(--color-muted);
+    font-size: 14px;
+    line-height: 1.6;
+  }
+
   .form-card button {
     justify-self: start;
   }
@@ -420,6 +601,13 @@
     gap: 12px;
   }
 
+  .header-actions {
+    align-items: flex-start;
+    justify-content: flex-start;
+    flex-direction: column;
+    gap: 10px;
+  }
+
   nav {
     width: 100%;
     gap: 8px 14px;
@@ -443,4 +631,8 @@
   .picker-grid {
     grid-template-columns: 1fr;
   }
+
+  .command-links {
+    grid-template-columns: 1fr;
+  }
 }