diff --git a/script.js b/script.js
index 94f6ace..83deebf 100644
--- a/script.js
+++ b/script.js
@@ -69,6 +69,36 @@
     canManage: false,
   };
 
+  // Access levels (open/copy)
+  const ACCESS_ANON_IDS = new Set(["dsyoon-ncue-net", "family-ncue-net", "link-ncue-net"]);
+  const ACCESS_USER_IDS = new Set([
+    "dsyoon-ncue-net",
+    "family-ncue-net",
+    "tts-ncue-net",
+    "meeting-ncue-net",
+    "link-ncue-net",
+    "dreamgirl-ncue-net",
+  ]);
+  const ACCESS_ADMIN_EMAILS = new Set(["dosangyoon@gmail.com", "dsyoon@ncue.net"]);
+
+  function getUserEmail() {
+    const e = auth && auth.user && auth.user.email ? String(auth.user.email) : "";
+    return e.trim().toLowerCase();
+  }
+
+  function isAdminEmail(email) {
+    const e = String(email || "").trim().toLowerCase();
+    return ACCESS_ADMIN_EMAILS.has(e);
+  }
+
+  function canAccessLink(link) {
+    const email = getUserEmail();
+    if (email && isAdminEmail(email)) return true;
+    const id = String(link && link.id ? link.id : "");
+    if (email) return ACCESS_USER_IDS.has(id);
+    return ACCESS_ANON_IDS.has(id);
+  }
+
   const auth = {
     client: null,
     user: null,
@@ -261,9 +291,11 @@
     const desc = escapeHtml(link.description || "");
     const url = escapeHtml(link.url);
     const starClass = link.favorite ? "star on" : "star";
+    const accessible = canAccessLink(link);
     const tags = (link.tags || []).slice(0, 8);
     const tagHtml = [
       link.favorite ? `<span class="tag fav">★ 즐겨찾기</span>` : "",
+      accessible ? "" : `<span class="tag lock">접근 제한</span>`,
       ...tags.map((t) => `<span class="tag">#${escapeHtml(t)}</span>`),
     ]
       .filter(Boolean)
@@ -274,8 +306,20 @@
     const lockTitle = state.canManage ? "" : ' title="관리 기능은 로그인 후 사용 가능합니다."';
     const fav = faviconUrl(link.url);
 
+    const accessDisabledAttr = accessible ? "" : " disabled aria-disabled=\"true\"";
+    const accessDisabledTitle = accessible ? "" : " title=\"이 링크는 현재 권한으로 접근할 수 없습니다.\"";
+
+    const openHtml = accessible
+      ? `<a class="btn mini" href="${url}" target="_blank" rel="noopener noreferrer" data-act="open">열기</a>`
+      : `<button class="btn mini" type="button"${accessDisabledAttr}${accessDisabledTitle}>열기</button>`;
+
+    const copyDisabledAttr = accessible ? "" : " disabled aria-disabled=\"true\"";
+    const copyDisabledTitle = accessible ? "" : " title=\"이 링크는 현재 권한으로 접근할 수 없습니다.\"";
+
     return `
-      <article class="card" data-id="${escapeHtml(link.id)}">
+      <article class="card${accessible ? "" : " disabled"}" data-id="${escapeHtml(link.id)}" data-access="${
+      accessible ? "1" : "0"
+    }">
         <div class="card-head">
           <div class="card-title">
             <div class="favicon" aria-hidden="true">
@@ -299,8 +343,8 @@
         <div class="tags">${tagHtml || ""}</div>
 
         <div class="card-actions">
-          <a class="btn mini" href="${url}" target="_blank" rel="noopener noreferrer" data-act="open">열기</a>
-          <button class="btn mini" type="button" data-act="copy">URL 복사</button>
+          ${openHtml}
+          <button class="btn mini" type="button" data-act="copy"${copyDisabledAttr}${copyDisabledTitle}>URL 복사</button>
           <button class="btn mini" type="button" data-act="edit"${lockAttr}${lockTitle}>편집</button>
           <button class="btn mini mini-danger" type="button" data-act="del"${lockAttr}${lockTitle}>삭제</button>
         </div>
@@ -1033,6 +1077,12 @@
     if (!id) return;
 
     const act = btn.getAttribute("data-act");
+    // access gate for open/copy
+    if ((act === "open" || act === "copy") && card.getAttribute("data-access") === "0") {
+      toast("이 링크는 현재 권한으로 접근할 수 없습니다.");
+      e.preventDefault();
+      return;
+    }
     if (auth.mode === "enabled" && !state.canManage && (act === "fav" || act === "edit" || act === "del")) {
       toast("관리 기능은 로그인(허용 이메일) 후 사용 가능합니다.");
       return;
diff --git a/styles.css b/styles.css
index 9d8edab..1ecb37d 100644
--- a/styles.css
+++ b/styles.css
@@ -655,10 +655,20 @@ html[data-theme="light"] .favicon .letter {
   color: rgba(180, 255, 210, 0.9);
 }
 
+ .tag.lock {
+  border-color: rgba(239, 68, 68, 0.32);
+  background: rgba(239, 68, 68, 0.08);
+  color: rgba(255, 200, 200, 0.92);
+}
+
 html[data-theme="light"] .tag.fav {
   color: rgba(0, 120, 70, 0.92);
 }
 
+html[data-theme="light"] .tag.lock {
+  color: rgba(140, 20, 20, 0.9);
+}
+
 .card-actions {
   margin-top: 12px;
   display: flex;
@@ -666,6 +676,14 @@ html[data-theme="light"] .tag.fav {
   flex-wrap: wrap;
 }
 
+.card.disabled {
+  opacity: 0.78;
+}
+
+.card.disabled:hover {
+  transform: none;
+}
+
 .mini {
   padding: 9px 10px;
   border-radius: 12px;