diff --git a/shaarli-pro/js/script.js b/shaarli-pro/js/script.js
index e58c4ab..b42f607 100644
--- a/shaarli-pro/js/script.js
+++ b/shaarli-pro/js/script.js
@@ -139,7 +139,18 @@
         return inflight;
     }
 
-    window.ShaaritThemeConfig = { save, findCandidates };
+    // Reads the current persisted config from the bookmark (no write).
+    // Returns null when no bookmark exists yet or JSON is invalid.
+    async function load() {
+        try {
+            const { existing } = await readEditForm(CONFIG_URL);
+            return existing || null;
+        } catch (e) {
+            return null;
+        }
+    }
+
+    window.ShaaritThemeConfig = { save, load, findCandidates };
 })();
 
 document.addEventListener('DOMContentLoaded', () => {
@@ -3556,54 +3567,53 @@ document.addEventListener('DOMContentLoaded', () => {
     })();
 
     // ===== Sync Theme from Bookmark in Background =====
-    setTimeout(() => {
-        // Run sync after a slight delay to avoid blocking initial load
-        if (!window.shaarli || !window.shaarli.basePath) return;
-        
-        fetch(window.shaarli.basePath + '/?searchtags=themes')
-            .then(res => res.text())
-            .then(text => {
-                const parser = new DOMParser();
-                const doc = parser.parseFromString(text, 'text/html');
-                const linkCard = doc.querySelector('.linklist-item');
-                if (linkCard) {
-                    const descEl = linkCard.querySelector('.link-description p');
-                    if (descEl) {
-                        try {
-                            const config = JSON.parse(descEl.textContent.trim());
-                            const remoteThemeId = config.default;
-                            const remoteMode = config.mode;
-                            const localThemeId = localStorage.getItem('shaarit_theme_id') || 'DEFAULT';
-                            const localMode = localStorage.getItem('theme') || (window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light');
-                            
-                            // Sync theme if different
-                            if (remoteThemeId && remoteThemeId !== localThemeId) {
-                                localStorage.setItem('shaarit_theme_id', remoteThemeId);
-                                document.documentElement.setAttribute('data-theme-id', remoteThemeId);
-                                console.log('[shaarit] Theme synced from bookmark:', remoteThemeId);
-                            }
-                            
-                            // Sync mode if different
-                            if (remoteMode && remoteMode !== localMode) {
-                                localStorage.setItem('theme', remoteMode);
-                                document.documentElement.setAttribute('data-theme', remoteMode);
-                                console.log('[shaarit] Mode synced from bookmark:', remoteMode);
-                            }
-                            
-                            // Enforce light/dark constraints based on synced theme
-                            const darkOnlyThemes = ['LINEAR', 'SPOTIFY', 'NOTION', 'DISCORD', 'DRACULA', 'ONE_DARK_PRO', 'TOKYO_NIGHT', 'NORD', 'NIGHT_OWL', 'ANTHRACITE', 'CYBERPUNK', 'NAVY_ELEGANCE', 'EARTHY'];
-                            const syncedThemeId = remoteThemeId || localThemeId;
-                            if (darkOnlyThemes.indexOf(syncedThemeId) !== -1) {
-                                localStorage.setItem('theme', 'dark');
-                                document.documentElement.setAttribute('data-theme', 'dark');
-                            }
-                            
-                            window.dispatchEvent(new Event('themeChanged'));
-                        } catch(e) {}
-                    }
-                }
-            })
-            .catch(err => console.log('[shaarit] Background theme sync failed:', err));
-    }, 1500);
+    // On every page load (including hard refresh): fetch the single config
+    // bookmark and apply {default, mode} if they differ from localStorage.
+    // This makes the bookmark the source of truth across devices/sessions.
+    (async function syncFromBookmark() {
+        try {
+            if (!window.ShaaritThemeConfig) return;
+            const config = await window.ShaaritThemeConfig.load();
+            if (!config) return;
+
+            const remoteThemeId = config.default;
+            const remoteMode = config.mode;
+            const localThemeId = localStorage.getItem('shaarit_theme_id') || 'DEFAULT';
+            const localMode = localStorage.getItem('theme')
+                || (window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light');
+
+            let changed = false;
+            if (remoteThemeId && remoteThemeId !== localThemeId) {
+                localStorage.setItem('shaarit_theme_id', remoteThemeId);
+                document.documentElement.setAttribute('data-theme-id', remoteThemeId);
+                console.log('[shaarit] Theme synced from bookmark:', remoteThemeId);
+                changed = true;
+            }
+            if (remoteMode && remoteMode !== localMode) {
+                localStorage.setItem('theme', remoteMode);
+                document.documentElement.setAttribute('data-theme', remoteMode);
+                console.log('[shaarit] Mode synced from bookmark:', remoteMode);
+                changed = true;
+            }
+
+            // Enforce dark-only theme constraints after remote apply
+            const darkOnlyThemes = ['LINEAR', 'SPOTIFY', 'NOTION', 'DISCORD', 'DRACULA',
+                'ONE_DARK_PRO', 'TOKYO_NIGHT', 'NORD', 'NIGHT_OWL', 'ANTHRACITE',
+                'CYBERPUNK', 'NAVY_ELEGANCE', 'EARTHY'];
+            const effectiveThemeId = remoteThemeId || localThemeId;
+            if (darkOnlyThemes.indexOf(effectiveThemeId) !== -1
+                    && localStorage.getItem('theme') !== 'dark') {
+                localStorage.setItem('theme', 'dark');
+                document.documentElement.setAttribute('data-theme', 'dark');
+                changed = true;
+            }
+
+            if (changed) {
+                window.dispatchEvent(new Event('themeChanged'));
+            }
+        } catch (err) {
+            console.log('[shaarit] Background theme sync failed:', err);
+        }
+    })();
 
 });