diff --git a/src/client/components/Modal.tsx b/src/client/components/Modal.tsx
index 68eafa2..203d1c5 100644
--- a/src/client/components/Modal.tsx
+++ b/src/client/components/Modal.tsx
@@ -1,15 +1,35 @@
-import type { ReactNode } from "react";
+import { useEffect, type ReactNode } from "react";
 
 export function Modal({
   maxWidth = "max-w-sm",
   children,
+  onClose,
+  labelledBy,
 }: {
   maxWidth?: string;
   children: ReactNode;
+  onClose?: () => void;
+  labelledBy?: string;
 }) {
+  useEffect(() => {
+    if (!onClose) return;
+
+    const handleKeyDown = (event: KeyboardEvent) => {
+      if (event.key !== "Escape" || event.defaultPrevented) return;
+      event.preventDefault();
+      onClose();
+    };
+
+    window.addEventListener("keydown", handleKeyDown);
+    return () => window.removeEventListener("keydown", handleKeyDown);
+  }, [onClose]);
+
   return (
     <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/50">
       <div
+        role="dialog"
+        aria-modal="true"
+        aria-labelledby={labelledBy}
         className={`card bg-base-100 border border-base-300 w-full ${maxWidth} shadow-xl`}
       >
         <div className="card-body gap-4">{children}</div>
diff --git a/src/client/components/table/ExportToSheetsModal.tsx b/src/client/components/table/ExportToSheetsModal.tsx
index 896b0a8..2971519 100644
--- a/src/client/components/table/ExportToSheetsModal.tsx
+++ b/src/client/components/table/ExportToSheetsModal.tsx
@@ -28,13 +28,17 @@ export function ExportToSheetsModal() {
   };
 
   return (
-    <Modal maxWidth="max-w-md">
+    <Modal
+      maxWidth="max-w-md"
+      onClose={closeExportToSheetsModal}
+      labelledBy="export-to-sheets-title"
+    >
       <div className="flex items-start justify-between gap-3">
         <div className="flex items-center gap-2">
           <span className="inline-flex size-8 items-center justify-center rounded-full bg-success/15 text-success">
             <Check className="size-4" />
           </span>
-          <h3 className="text-base font-semibold">
+          <h3 id="export-to-sheets-title" className="text-base font-semibold">
             Copied {rowCount} row{rowCount === 1 ? "" : "s"} to your clipboard
           </h3>
         </div>
diff --git a/src/client/features/rank-tracking/CheckConfirmModal.tsx b/src/client/features/rank-tracking/CheckConfirmModal.tsx
index c33fa65..93a8f6e 100644
--- a/src/client/features/rank-tracking/CheckConfirmModal.tsx
+++ b/src/client/features/rank-tracking/CheckConfirmModal.tsx
@@ -34,9 +34,13 @@ export function CheckConfirmModal({
     Math.ceil(totalChecks / KEYWORDS_PER_BATCH) * SECONDS_PER_BATCH;
 
   return (
-    <Modal maxWidth="max-w-md">
+    <Modal
+      maxWidth="max-w-md"
+      onClose={onCancel}
+      labelledBy="rank-check-confirm-title"
+    >
       <div>
-        <h3 className="text-lg font-semibold">
+        <h3 id="rank-check-confirm-title" className="text-lg font-semibold">
           Check {keywordCount} keyword
           {keywordCount !== 1 ? "s" : ""}
         </h3>
diff --git a/src/client/features/rank-tracking/KeywordSuggestionStep.tsx b/src/client/features/rank-tracking/KeywordSuggestionStep.tsx
index edaf762..7405ce9 100644
--- a/src/client/features/rank-tracking/KeywordSuggestionStep.tsx
+++ b/src/client/features/rank-tracking/KeywordSuggestionStep.tsx
@@ -255,7 +255,9 @@ export function KeywordSuggestionStep({
 
   const sectionHeader = (title: string) => (
     <div className="flex items-center justify-between">
-      <h2 className="text-lg font-semibold">{title}</h2>
+      <h2 id="keyword-suggestions-title" className="text-lg font-semibold">
+        {title}
+      </h2>
       <button className="btn btn-ghost btn-sm btn-square" onClick={onClose}>
         <X className="size-4" />
       </button>
diff --git a/src/client/features/rank-tracking/RankTrackingConfigModal.tsx b/src/client/features/rank-tracking/RankTrackingConfigModal.tsx
index 8fd4fac..9348120 100644
--- a/src/client/features/rank-tracking/RankTrackingConfigModal.tsx
+++ b/src/client/features/rank-tracking/RankTrackingConfigModal.tsx
@@ -127,8 +127,14 @@ export function RankTrackingConfigModal({
   const isPending = createMutation.isPending || updateMutation.isPending;
 
   if (step === "keywords" && createdConfigId) {
+    const closeKeywordStep = () => onSaved(createdConfigId);
+
     return (
-      <Modal maxWidth="max-w-3xl">
+      <Modal
+        maxWidth="max-w-3xl"
+        onClose={closeKeywordStep}
+        labelledBy="keyword-suggestions-title"
+      >
         <KeywordSuggestionStep
           configId={createdConfigId}
           projectId={projectId}
@@ -136,16 +142,20 @@ export function RankTrackingConfigModal({
           locationCode={locationCode}
           languageCode={getLanguageCode(locationCode)}
           onDone={(id) => onSaved(id)}
-          onClose={() => onSaved(createdConfigId ?? undefined)}
+          onClose={closeKeywordStep}
         />
       </Modal>
     );
   }
 
   return (
-    <Modal maxWidth="max-w-lg">
+    <Modal
+      maxWidth="max-w-lg"
+      onClose={onClose}
+      labelledBy="rank-config-modal-title"
+    >
       <div className="flex items-center justify-between">
-        <h2 className="text-lg font-semibold">
+        <h2 id="rank-config-modal-title" className="text-lg font-semibold">
           {isEdit ? "Edit Domain Config" : "Add Domain"}
         </h2>
         <button className="btn btn-ghost btn-sm btn-square" onClick={onClose}>
diff --git a/src/client/features/rank-tracking/RankTrackingDomainList.tsx b/src/client/features/rank-tracking/RankTrackingDomainList.tsx
index de15a16..e7ffdc1 100644
--- a/src/client/features/rank-tracking/RankTrackingDomainList.tsx
+++ b/src/client/features/rank-tracking/RankTrackingDomainList.tsx
@@ -97,8 +97,11 @@ export function RankTrackingDomainList({
       </div>
 
       {archiveTarget && (
-        <Modal>
-          <h3 className="text-lg font-semibold">
+        <Modal
+          onClose={() => setArchiveTarget(null)}
+          labelledBy="archive-domain-title"
+        >
+          <h3 id="archive-domain-title" className="text-lg font-semibold">
             Archive {archiveTarget.domain}?
           </h3>
           <p className="text-sm text-base-content/70">
diff --git a/src/client/features/rank-tracking/RankTrackingTable.tsx b/src/client/features/rank-tracking/RankTrackingTable.tsx
index 2da9feb..b24d9af 100644
--- a/src/client/features/rank-tracking/RankTrackingTable.tsx
+++ b/src/client/features/rank-tracking/RankTrackingTable.tsx
@@ -129,8 +129,13 @@ export function RankTrackingTable({
 
       {/* Confirm modal */}
       {showConfirm && (
-        <Modal>
-          <h3 className="text-lg font-semibold">Remove keywords?</h3>
+        <Modal
+          onClose={() => setShowConfirm(false)}
+          labelledBy="remove-keywords-title"
+        >
+          <h3 id="remove-keywords-title" className="text-lg font-semibold">
+            Remove keywords?
+          </h3>
           <p className="text-sm text-base-content/70">
             This will stop tracking {selectedCount} keyword
             {selectedCount !== 1 ? "s" : ""}. Historical ranking data is