diff --git a/index.html b/index.html
index 22f6cc9..4faa35b 100644
--- a/index.html
+++ b/index.html
@@ -61,20 +61,20 @@ <h1 data-i18n="hero.title">맥락지혜 연구실</h1>
 
         <div class="hero-visual">
           <img class="context-art" src="assets/context-thread-map.svg" alt="" aria-hidden="true">
-          <div class="ladder" aria-label="Data to wisdom ladder">
-            <div class="ladder-row">
+          <div class="ladder" role="list" aria-label="Data to wisdom ladder">
+            <div class="ladder-row" role="listitem">
               <span>Data</span>
               <strong data-i18n="ladder.data">기록된 흔적 · 문서 · 메일 · 로그</strong>
             </div>
-            <div class="ladder-row">
+            <div class="ladder-row" role="listitem">
               <span>Information</span>
               <strong data-i18n="ladder.information">질문과 기준 안에서 해석된 자료</strong>
             </div>
-            <div class="ladder-row">
+            <div class="ladder-row" role="listitem">
               <span>Knowledge</span>
               <strong data-i18n="ladder.knowledge">관계, 원인, 제약으로 설명되는 구조</strong>
             </div>
-            <div class="ladder-row">
+            <div class="ladder-row" role="listitem">
               <span>Wisdom</span>
               <strong data-i18n="ladder.wisdom">판단과 실행으로 건너가기</strong>
             </div>