diff --git a/client/src/App.css b/client/src/App.css
index e2df22a..f798a27 100644
--- a/client/src/App.css
+++ b/client/src/App.css
@@ -567,18 +567,16 @@ html.scheme-dark .themed-select-option.is-selected {
 }
 
 .registration-disclaimer--modal {
+  position: relative;
   width: min(560px, calc(100vw - 32px));
   margin: 0;
 }
 
-.registration-disclaimer .auth-header {
-  position: relative;
-}
-
 .registration-disclaimer__close {
   position: absolute;
-  top: 0;
-  right: 0;
+  top: 12px;
+  right: 12px;
+  z-index: 1;
   display: inline-flex;
   align-items: center;
   justify-content: center;
@@ -604,6 +602,7 @@ html.scheme-dark .themed-select-option.is-selected {
   align-items: center;
   justify-content: center;
   padding: 16px;
+  overflow: hidden;
   background: rgba(2, 6, 23, 0.72);
 }
 
@@ -611,7 +610,20 @@ html.scheme-dark .themed-select-option.is-selected {
   width: 100%;
   max-width: 560px;
   max-height: min(90vh, 820px);
-  overflow-y: auto;
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+  overflow: hidden;
+}
+
+.disclaimer-modal-panel > .registration-disclaimer {
+  flex: 1 1 auto;
+  min-height: 0;
+  max-height: 100%;
+  width: 100%;
+  max-width: 100%;
+  overflow: hidden;
+  box-sizing: border-box;
 }
 
 .feedback-modal {
@@ -910,6 +922,7 @@ html.scheme-dark .themed-select-option.is-selected {
 
 .registration-disclaimer__sections {
   flex: 1;
+  min-height: 0;
   overflow-y: auto;
   display: flex;
   flex-direction: column;
diff --git a/client/src/components/DisclaimerModal.tsx b/client/src/components/DisclaimerModal.tsx
index 7de9c84..672b4f2 100644
--- a/client/src/components/DisclaimerModal.tsx
+++ b/client/src/components/DisclaimerModal.tsx
@@ -13,7 +13,12 @@ export default function DisclaimerModal({ open, onClose }: DisclaimerModalProps)
       if (event.key === 'Escape') onClose()
     }
     window.addEventListener('keydown', onKeyDown)
-    return () => window.removeEventListener('keydown', onKeyDown)
+    const prevOverflow = document.body.style.overflow
+    document.body.style.overflow = 'hidden'
+    return () => {
+      window.removeEventListener('keydown', onKeyDown)
+      document.body.style.overflow = prevOverflow
+    }
   }, [open, onClose])
 
   if (!open) return null
diff --git a/client/src/components/RegistrationDisclaimer.tsx b/client/src/components/RegistrationDisclaimer.tsx
index 98c9746..a6c64bf 100644
--- a/client/src/components/RegistrationDisclaimer.tsx
+++ b/client/src/components/RegistrationDisclaimer.tsx
@@ -28,19 +28,19 @@ export default function RegistrationDisclaimer({
       className={`auth-card glass registration-disclaimer${variant === 'view' ? ' registration-disclaimer--modal' : ''}`}
       role="document"
     >
+      {variant === 'view' && (
+        <button
+          type="button"
+          className="registration-disclaimer__close"
+          onClick={onDismiss}
+          aria-label={t('disclaimer.close')}
+        >
+          <X size={18} />
+        </button>
+      )}
       <div className="auth-header">
         <ScrollText className="auth-icon accent" size={48} />
         <h2>{t('disclaimer.title')}</h2>
-        {variant === 'view' && (
-          <button
-            type="button"
-            className="registration-disclaimer__close"
-            onClick={onDismiss}
-            aria-label={t('disclaimer.close')}
-          >
-            <X size={18} />
-          </button>
-        )}
       </div>
 
       <p className="registration-disclaimer__intro">{t('disclaimer.intro')}</p>