优化登陆页面

public/css/style.css

@@ -136,35 +136,37 @@ header p {
     display: flex;
     align-items: center;
     justify-content: center;
-    background: radial-gradient(circle at top left, rgba(249, 250, 252, 0.95), rgba(255, 255, 255, 0.98));
+    background: transparent;
     z-index: 50;
     padding: 2rem;
 }
 
 .login-card {
     width: min(480px, 100%);
-    background: #ffffff;
-    border: 1px solid rgba(148, 163, 184, 0.3);
+    background: var(--panel-bg);
+    backdrop-filter: blur(16px);
+    -webkit-backdrop-filter: blur(16px);
+    border: 1px solid var(--panel-border);
     border-radius: 24px;
     padding: 2rem;
-    box-shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
+    box-shadow: 0 20px 40px rgba(148, 163, 184, 0.15);
 }
 
 .login-card h2 {
     margin: 0 0 0.75rem;
     font-size: 1.75rem;
-    color: #111827;
+    color: var(--text-primary);
 }
 
 .login-card p {
-    color: #6b7280;
+    color: var(--text-secondary);
     margin: 0 0 1.5rem;
 }
 
 .login-card label {
     display: block;
     margin-bottom: 1rem;
-    color: #4b5563;
+    color: var(--text-secondary);
     font-size: 0.95rem;
 }
 
@@ -175,17 +177,17 @@ header p {
 
 .login-card input {
     width: 100%;
-    border: 1px solid rgba(148, 163, 184, 0.5);
-    background: #f8fafc;
-    color: #111827;
+    border: 1px solid var(--panel-border);
+    background: rgba(255, 255, 255, 0.08);
+    color: var(--text-primary);
     border-radius: 12px;
     padding: 0.85rem 1rem;
     outline: none;
 }
 
 .login-card input:focus {
-    border-color: #2563eb;
-    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
+    border-color: var(--accent);
+    box-shadow: 0 0 0 4px var(--accent-glow);
 }
 
 .login-card .primary-btn {