fix(login): 统一登录页主题链路

src/assets/images/login-bg-dark.svg

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%" viewBox="0 0 1400 800">
+  <defs>
+    <linearGradient id="bgDark" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" stop-color="#0b1324" />
+      <stop offset="58%" stop-color="#162135" />
+      <stop offset="100%" stop-color="#1e2c44" />
+    </linearGradient>
+
+    <radialGradient id="glowPrimary" cx="18%" cy="14%" r="62%">
+      <stop offset="0%" stop-color="rgba(98,142,255,0.42)" />
+      <stop offset="46%" stop-color="rgba(98,142,255,0.18)" />
+      <stop offset="100%" stop-color="rgba(98,142,255,0)" />
+    </radialGradient>
+
+    <radialGradient id="glowSecondary" cx="82%" cy="70%" r="56%">
+      <stop offset="0%" stop-color="rgba(59,108,224,0.28)" />
+      <stop offset="48%" stop-color="rgba(59,108,224,0.14)" />
+      <stop offset="100%" stop-color="rgba(59,108,224,0)" />
+    </radialGradient>
+
+    <linearGradient id="meshDark" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" stop-color="rgba(255,255,255,0.1)" />
+      <stop offset="35%" stop-color="rgba(255,255,255,0.04)" />
+      <stop offset="100%" stop-color="rgba(255,255,255,0)" />
+    </linearGradient>
+  </defs>
+
+  <rect width="100%" height="100%" fill="url(#bgDark)" />
+  <rect width="100%" height="100%" fill="url(#glowPrimary)" />
+  <rect width="100%" height="100%" fill="url(#glowSecondary)" />
+  <rect width="100%" height="100%" fill="url(#meshDark)" />
+
+  <g opacity="0.32">
+    <rect x="-40" y="520" width="520" height="220" rx="180" fill="rgba(255,255,255,0.12)" />
+    <rect x="760" y="90" width="520" height="210" rx="180" fill="rgba(255,255,255,0.1)" />
+    <rect x="420" y="620" width="560" height="190" rx="180" fill="rgba(255,255,255,0.08)" />
+  </g>
+</svg>

src/assets/images/login-bg.svg

@@ -1,45 +1,24 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%" viewBox="0 0 1400 800">
   <defs>
-    <style>
-      @media (prefers-color-scheme: dark) {
-        #bg-layer { fill: url(#bgDark); }
-        #soft-glow { fill: url(#glowDark); }
-        .accent-arc { stroke: rgba(118, 156, 255, 0.35); }
-        .accent-dot { fill: rgba(154, 188, 255, 0.45); }
-      }
-    </style>
-
     <linearGradient id="bgLight" x1="0%" y1="0%" x2="100%" y2="100%">
       <stop offset="0%" stop-color="#f3f7ff" />
       <stop offset="60%" stop-color="#e3edff" />
       <stop offset="100%" stop-color="#d6e7ff" />
     </linearGradient>
-    
-    <linearGradient id="bgDark" x1="0%" y1="0%" x2="100%" y2="100%">
-      <stop offset="0%" stop-color="#0b1324" />
-      <stop offset="60%" stop-color="#162135" />
-      <stop offset="100%" stop-color="#1e2c44" />
-    </linearGradient>
-    
+
     <radialGradient id="glowLight" cx="20%" cy="15%" r="60%">
       <stop offset="0%" stop-color="rgba(64,128,255,0.35)" />
       <stop offset="40%" stop-color="rgba(64,128,255,0.18)" />
       <stop offset="100%" stop-color="rgba(64,128,255,0)" />
     </radialGradient>
-    
-    <radialGradient id="glowDark" cx="20%" cy="15%" r="60%">
-      <stop offset="0%" stop-color="rgba(98,142,255,0.4)" />
-      <stop offset="50%" stop-color="rgba(98,142,255,0.18)" />
-      <stop offset="100%" stop-color="rgba(98,142,255,0)" />
-    </radialGradient>
-    
+
     <radialGradient id="glowSecondary" cx="80%" cy="70%" r="55%">
       <stop offset="0%" stop-color="rgba(22,93,255,0.3)" />
       <stop offset="50%" stop-color="rgba(22,93,255,0.12)" />
       <stop offset="100%" stop-color="rgba(22,93,255,0)" />
     </radialGradient>
-    
+
     <linearGradient id="meshLight" x1="0%" y1="0%" x2="100%" y2="100%">
       <stop offset="0%" stop-color="rgba(255,255,255,0.6)" />
       <stop offset="35%" stop-color="rgba(255,255,255,0.2)" />
@@ -60,4 +39,4 @@
   </g>
 
   <!-- 去掉点状噪声，仅保留大区域柔光 -->
-</svg>
+</svg>

src/assets/images/login-bg1.svg

@@ -6,15 +6,6 @@
       --orange: rgba(230, 162, 60, 0.06);
       --green: rgba(144, 238, 144, 0.06);
     }
-
-    @media (prefers-color-scheme: dark) {
-      :root {
-        --blue: rgba(64, 158, 255, 0.04);
-        --grey: rgba(144, 147, 153, 0.03);
-        --orange: rgba(230, 162, 60, 0.04);
-        --green: rgba(144, 238, 144, 0.04);
-      }
-    }
   </style>
 
   <!-- 左侧波浪 -->