第47批：2FA绑定状态双向同步(pull_state/push_state)；图片壁纸下卡片/侧栏半透明毛玻璃自适应；壁纸源改四级fallback(必应主域/中国镜像/NASA APOD/picsum兜底)+转发白名单扩充

admin.php

@@ -52,6 +52,12 @@ if (is_file($ossTxt)) {
         .si.active { color:var(--accent); border-right:3px solid var(--accent); background:rgba(88,166,255,0.05); }
         .content { flex:1; padding:20px; overflow-y:auto; max-height:calc(100vh - 52px - 44px); }
         .card { background:var(--card); border:1px solid var(--border); border-radius:8px; padding:16px; margin-bottom:12px; }
+        /* 第47批：图片壁纸模式下卡片/侧栏自适应半透明+毛玻璃；纯色/默认模式不受影响 */
+        body.bg-img-mode .card, body.bg-img-mode .sidebar {
+            background: rgba(22,27,34,0.55);
+            backdrop-filter: blur(14px) saturate(1.4);
+            -webkit-backdrop-filter: blur(14px) saturate(1.4);
+        }
         .card h2 { font-size:15px; color:var(--accent); margin-bottom:10px; }
         .stats { display:grid; grid-template-columns:repeat(auto-fill,minmax(150px,1fr)); gap:10px; margin-bottom:16px; }
         .stat { background:var(--card); border:1px solid var(--border); border-radius:8px; padding:14px; text-align:center; }
@@ -2140,6 +2146,7 @@ function applyAdminBgImage(url, dim, silent) {
     b.style.backgroundPosition = 'center center';
     b.style.backgroundRepeat = 'no-repeat';
     b.style.backgroundAttachment = 'fixed';
+    b.classList.add('bg-img-mode');
     document.documentElement.style.setProperty('--bg', 'rgba(13,17,23,' + Math.min(0.9, dim + 0.25) + ')');
     localStorage.setItem('sdf1_admin_bgimg', JSON.stringify({ type: 'img', url: url, dim: dim }));
     if (!silent) toast('背景图片已应用', 'ok');
@@ -2227,6 +2234,7 @@ function resetBg() {
     b.style.backgroundPosition = '';
     b.style.backgroundRepeat = '';
     b.style.backgroundAttachment = '';
+    b.classList.remove('bg-img-mode');
     document.documentElement.style.removeProperty('--bg');
     b.style.background = '';
     const ov = document.getElementById('themePickerOverlay');
@@ -2283,7 +2291,7 @@ function showThemePicker() {
                 <div style="color:var(--dim);font-size:11px;margin-top:6px">支持任意直链 jpg/png/webp；对方站点防盗链可能导致加载失败</div>
             </div>
             <div id="wpPaneApi" style="display:none">
-                <button class="btn btn-blue" onclick="wpFetchBing()">获取必应每日壁纸</button>
+                <button class="btn btn-blue" onclick="wpFetchBing()">获取每日壁纸（多源）</button>
                 <div id="wpApiInfo" style="margin-top:10px;color:var(--dim);font-size:12px">点击获取后自动预览，再点应用生效</div>
             </div>
             <div id="wpDimRow" style="display:none;margin-top:14px">
@@ -2315,6 +2323,7 @@ function setTheme(color) {
     b.style.backgroundPosition = '';
     b.style.backgroundRepeat = '';
     b.style.backgroundAttachment = '';
+    b.classList.remove('bg-img-mode');
     document.documentElement.style.setProperty('--bg', color);
     b.style.background = color;
     localStorage.removeItem('sdf1_admin_bgimg');