diff --git a/frontend/src/components/login/MinimalDark.tsx b/frontend/src/components/login/MinimalDark.tsx
index a4bd472..2181040 100644
--- a/frontend/src/components/login/MinimalDark.tsx
+++ b/frontend/src/components/login/MinimalDark.tsx
@@ -1,223 +1,260 @@
 import { useLogin } from '@/hooks/useLogin';
 
-/* ---------- static star positions (generated once) ---------- */
-const STARS = [
-  { top: '8%', left: '15%', size: 2, opacity: 0.25 },
-  { top: '12%', left: '72%', size: 1, opacity: 0.15 },
-  { top: '25%', left: '45%', size: 3, opacity: 0.10 },
-  { top: '18%', left: '88%', size: 1, opacity: 0.35 },
-  { top: '38%', left: '22%', size: 2, opacity: 0.20 },
-  { top: '55%', left: '68%', size: 1, opacity: 0.30 },
-  { top: '62%', left: '35%', size: 2, opacity: 0.15 },
-  { top: '75%', left: '80%', size: 3, opacity: 0.12 },
-  { top: '82%', left: '50%', size: 1, opacity: 0.40 },
-  { top: '90%', left: '10%', size: 2, opacity: 0.18 },
+/* ---------- Flowing curve configs ---------- */
+const CURVES = [
+  {
+    // Curve 1: Wide pink-to-purple ribbon, top area
+    width: '140%', height: 320, top: '-5%', left: '-20%',
+    background: 'linear-gradient(135deg, #ec4899 0%, #a855f7 40%, #6366f1 100%)',
+    opacity: 0.12, blur: 60, rotate: -12,
+    animation: 'curve-flow-1 20s ease-in-out infinite',
+  },
+  {
+    // Curve 2: Thin bright pink ribbon, mid-upper
+    width: '120%', height: 180, top: '15%', left: '-10%',
+    background: 'linear-gradient(90deg, transparent 0%, #f472b6 30%, #c084fc 60%, transparent 100%)',
+    opacity: 0.18, blur: 40, rotate: -8,
+    animation: 'curve-flow-2 16s ease-in-out infinite',
+  },
+  {
+    // Curve 3: Deep purple band, center
+    width: '160%', height: 240, top: '35%', left: '-30%',
+    background: 'linear-gradient(135deg, #7c3aed 0%, #4f46e5 50%, #2563eb 100%)',
+    opacity: 0.10, blur: 70, rotate: 5,
+    animation: 'curve-flow-3 24s ease-in-out infinite',
+  },
+  {
+    // Curve 4: Bright cyan-pink accent, lower-mid
+    width: '110%', height: 120, top: '55%', left: '-5%',
+    background: 'linear-gradient(90deg, transparent 10%, #06b6d4 35%, #a855f7 65%, transparent 90%)',
+    opacity: 0.15, blur: 35, rotate: -15,
+    animation: 'curve-flow-4 14s ease-in-out infinite',
+  },
+  {
+    // Curve 5: Soft pink glow, bottom
+    width: '130%', height: 200, top: '70%', left: '-15%',
+    background: 'linear-gradient(135deg, #db2777 0%, #9333ea 60%, #4f46e5 100%)',
+    opacity: 0.08, blur: 80, rotate: 10,
+    animation: 'curve-flow-5 22s ease-in-out infinite',
+  },
+  {
+    // Curve 6: Thin bright line accent
+    width: '100%', height: 3, top: '40%', left: '0%',
+    background: 'linear-gradient(90deg, transparent 0%, #f472b6 20%, #c084fc 50%, #818cf8 80%, transparent 100%)',
+    opacity: 0.35, blur: 8, rotate: -5,
+    animation: 'curve-line-float 18s ease-in-out infinite',
+  },
+  {
+    // Curve 7: Another thin accent line
+    width: '90%', height: 2, top: '65%', left: '5%',
+    background: 'linear-gradient(90deg, transparent 5%, #818cf8 30%, #e879f9 70%, transparent 95%)',
+    opacity: 0.25, blur: 6, rotate: 8,
+    animation: 'curve-line-float 15s ease-in-out infinite reverse',
+  },
 ];
 
-/* ---------- meteor configs ---------- */
-const METEORS = [
-  { width: 140, height: 1, duration: '1.5s', delay: '0s', top: '-20px', right: '10%' },
-  { width: 120, height: 2, duration: '1.2s', delay: '2s', top: '-60px', right: '30%' },
-  { width: 150, height: 1, duration: '1.8s', delay: '4s', top: '-10px', right: '55%' },
-  { width: 110, height: 2, duration: '2s', delay: '6.5s', top: '-80px', right: '20%' },
-  { width: 130, height: 1, duration: '1.4s', delay: '9s', top: '-40px', right: '70%' },
-  { width: 100, height: 1, duration: '1.6s', delay: '12s', top: '-30px', right: '45%' },
-];
-
-const KEYFRAMES = METEORS.map((_, i) => `
-  @keyframes meteor-shoot-${i + 1} {
-    0% {
-      opacity: 0;
-      transform: translate(100vw, -100px) rotate(-35deg);
-    }
-    10% {
-      opacity: 1;
-    }
-    100% {
-      opacity: 0;
-      transform: translate(-100px, 100vh) rotate(-35deg);
-    }
+const KEYFRAMES = `
+  @keyframes curve-flow-1 {
+    0%, 100% { transform: rotate(-12deg) translateX(0) scaleY(1); }
+    33% { transform: rotate(-10deg) translateX(30px) scaleY(1.05); }
+    66% { transform: rotate(-14deg) translateX(-20px) scaleY(0.95); }
   }
-`).join('\n');
+  @keyframes curve-flow-2 {
+    0%, 100% { transform: rotate(-8deg) translateX(0); }
+    50% { transform: rotate(-6deg) translateX(40px); }
+  }
+  @keyframes curve-flow-3 {
+    0%, 100% { transform: rotate(5deg) translateX(0) scaleX(1); }
+    40% { transform: rotate(3deg) translateX(-30px) scaleX(1.02); }
+    70% { transform: rotate(7deg) translateX(20px) scaleX(0.98); }
+  }
+  @keyframes curve-flow-4 {
+    0%, 100% { transform: rotate(-15deg) translateX(0); }
+    50% { transform: rotate(-13deg) translateX(50px); }
+  }
+  @keyframes curve-flow-5 {
+    0%, 100% { transform: rotate(10deg) translateX(0); }
+    50% { transform: rotate(8deg) translateX(-40px); }
+  }
+  @keyframes curve-line-float {
+    0%, 100% { transform: rotate(-5deg) translateX(0); opacity: 0.3; }
+    25% { opacity: 0.5; }
+    50% { transform: rotate(-3deg) translateX(30px); opacity: 0.35; }
+    75% { opacity: 0.5; }
+  }
+  @keyframes curve-dot-pulse {
+    0%, 100% { opacity: 0.15; transform: scale(1); }
+    50% { opacity: 0.35; transform: scale(1.5); }
+  }
+`;
+
+/* ---------- Decorative dots ---------- */
+const DOTS = [
+  { top: '18%', left: '75%', size: 4, color: '#f472b6', delay: '0s' },
+  { top: '30%', left: '20%', size: 3, color: '#818cf8', delay: '2s' },
+  { top: '72%', left: '80%', size: 5, color: '#c084fc', delay: '1s' },
+  { top: '85%', left: '30%', size: 3, color: '#ec4899', delay: '3s' },
+  { top: '45%', left: '90%', size: 4, color: '#a855f7', delay: '1.5s' },
+];
 
 export default function MinimalDark() {
   const { username, password, loading, error, setUsername, setPassword, handleLogin } = useLogin();
 
   return (
     <>
-      {/* Inject keyframes once */}
       <style>{KEYFRAMES}</style>
 
       <div
         style={{
           position: 'relative',
           display: 'flex',
-          flexDirection: 'column',
           alignItems: 'center',
           justifyContent: 'center',
           minHeight: '100vh',
           padding: 24,
-          background: 'radial-gradient(ellipse at 50% 50%, #151030 0%, #0c0a1a 70%)',
+          background: 'linear-gradient(160deg, #0a0a1a 0%, #0f0a2a 30%, #150825 60%, #0a0a1a 100%)',
           overflow: 'hidden',
         }}
       >
-        {/* -------- Static star dots -------- */}
-        {STARS.map((s, i) => (
+        {/* -------- Background glow orbs -------- */}
+        <div
+          style={{
+            position: 'fixed', top: '-20%', right: '-10%', width: 500, height: 500,
+            borderRadius: '50%', background: 'radial-gradient(circle, rgba(168,85,247,0.08), transparent 70%)',
+            filter: 'blur(40px)', pointerEvents: 'none',
+          }}
+        />
+        <div
+          style={{
+            position: 'fixed', bottom: '-15%', left: '-5%', width: 400, height: 400,
+            borderRadius: '50%', background: 'radial-gradient(circle, rgba(236,72,153,0.06), transparent 70%)',
+            filter: 'blur(40px)', pointerEvents: 'none',
+          }}
+        />
+
+        {/* -------- Flowing curves -------- */}
+        {CURVES.map((c, i) => (
           <div
-            key={`star-${i}`}
+            key={`curve-${i}`}
             style={{
               position: 'absolute',
-              top: s.top,
-              left: s.left,
-              width: s.size,
-              height: s.size,
+              top: c.top, left: c.left,
+              width: c.width, height: c.height,
+              background: c.background,
+              opacity: c.opacity,
+              filter: `blur(${c.blur}px)`,
               borderRadius: '50%',
-              background: '#fff',
-              opacity: s.opacity,
+              animation: c.animation,
               pointerEvents: 'none',
             }}
           />
         ))}
 
-        {/* -------- Shooting meteors -------- */}
-        {METEORS.map((m, i) => (
+        {/* -------- Decorative dots -------- */}
+        {DOTS.map((d, i) => (
           <div
-            key={`meteor-${i}`}
+            key={`dot-${i}`}
             style={{
               position: 'absolute',
-              top: m.top,
-              right: m.right,
-              width: m.width,
-              height: m.height,
-              background: 'linear-gradient(to left, rgba(255,255,255,0.8), transparent)',
-              transform: 'rotate(-35deg)',
-              animation: `meteor-shoot-${i + 1} ${m.duration} ${m.delay} linear infinite forwards`,
+              top: d.top, left: d.left,
+              width: d.size, height: d.size,
+              borderRadius: '50%',
+              background: d.color,
+              animation: `curve-dot-pulse ${3 + i * 0.5}s ${d.delay} ease-in-out infinite`,
               pointerEvents: 'none',
             }}
           />
         ))}
 
-        {/* -------- Central content card -------- */}
-        <div style={{ width: '100%', maxWidth: 320, textAlign: 'center', position: 'relative', zIndex: 1 }}>
-          {/* Gradient diamond */}
+        {/* -------- Central content -------- */}
+        <div
+          style={{
+            width: '100%', maxWidth: 400, textAlign: 'center',
+            position: 'relative', zIndex: 10,
+            background: 'rgba(255,255,255,0.03)',
+            backdropFilter: 'blur(20px)', WebkitBackdropFilter: 'blur(20px)',
+            borderRadius: 24, padding: '48px 36px',
+            boxShadow: '0 0 0 1px rgba(255,255,255,0.05), 0 8px 40px rgba(0,0,0,0.3)',
+          }}
+        >
+          {/* Brand logo */}
           <div
             style={{
-              width: 20,
-              height: 20,
-              background: 'linear-gradient(135deg, #6366f1, #a855f7)',
-              borderRadius: 4,
-              transform: 'rotate(45deg)',
+              width: 44, height: 44, borderRadius: 12,
+              background: 'linear-gradient(135deg, #ec4899, #a855f7)',
+              display: 'flex', alignItems: 'center', justifyContent: 'center',
               margin: '0 auto 24px',
-              boxShadow: '0 0 16px rgba(99,102,241,0.35)',
-            }}
-          />
-
-          {/* Brand */}
-          <h1
-            style={{
-              fontSize: 15,
-              fontWeight: 500,
-              letterSpacing: '3px',
-              color: 'rgba(255,255,255,0.8)',
-              margin: 0,
+              boxShadow: '0 4px 20px rgba(168,85,247,0.3)',
             }}
           >
+            <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="#fff" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+              <ellipse cx="12" cy="5" rx="9" ry="3" />
+              <path d="M21 12c0 1.66-4 3-9 3s-9-1.34-9-3" />
+              <path d="M3 5v14c0 1.66 4 3 9 3s9-1.34 9-3V5" />
+            </svg>
+          </div>
+
+          {/* Brand name */}
+          <h1 style={{ fontSize: 22, fontWeight: 600, color: '#fff', marginBottom: 6, letterSpacing: '-0.3px' }}>
             SQL审核平台
           </h1>
-
-          {/* Thin divider */}
-          <div
-            style={{
-              width: 40,
-              height: 1,
-              background: 'rgba(255,255,255,0.1)',
-              margin: '32px auto',
-            }}
-          />
+          <p style={{ color: 'rgba(255,255,255,0.4)', fontSize: 14, marginBottom: 36 }}>
+            企业级数据库审核与合规管理
+          </p>
 
           {/* Form */}
-          <form
-            onSubmit={handleLogin}
-            style={{ display: 'flex', flexDirection: 'column' }}
-          >
+          <form onSubmit={handleLogin} style={{ display: 'flex', flexDirection: 'column', gap: 16 }}>
             {error && (
-              <div style={{ color: '#f87171', fontSize: 13, marginBottom: 20, textAlign: 'left' }}>
+              <div style={{ color: '#f87171', fontSize: 13, textAlign: 'center', padding: '10px 14px', background: 'rgba(248,113,113,0.08)', borderRadius: 8 }}>
                 {error}
               </div>
             )}
 
-            {/* Username */}
-            <div style={{ marginBottom: 24 }}>
-              <input
-                type="text"
-                placeholder="用户名"
-                value={username}
-                onChange={(e) => setUsername(e.target.value)}
-                className="w-full"
-                style={{
-                  padding: '12px 0',
-                  background: 'transparent',
-                  border: 'none',
-                  borderBottom: '1px solid rgba(255,255,255,0.1)',
-                  borderRadius: 0,
-                  color: '#fff',
-                  fontSize: 14,
-                  outline: 'none',
-                  transition: 'border-color 0.25s',
-                }}
-                onFocus={(e) => {
-                  e.target.style.borderBottomColor = 'rgba(99,102,241,0.5)';
-                }}
-                onBlur={(e) => {
-                  e.target.style.borderBottomColor = 'rgba(255,255,255,0.1)';
-                }}
-              />
-            </div>
+            <input
+              type="text"
+              placeholder="用户名"
+              value={username}
+              onChange={(e) => setUsername(e.target.value)}
+              className="w-full"
+              style={{
+                padding: '13px 16px', borderRadius: 10,
+                background: 'rgba(255,255,255,0.05)',
+                border: '1px solid rgba(255,255,255,0.08)',
+                color: '#fff', fontSize: 14, outline: 'none',
+                transition: 'border-color 0.2s, background 0.2s',
+              }}
+              onFocus={(e) => { e.target.style.borderColor = 'rgba(168,85,247,0.4)'; e.target.style.background = 'rgba(255,255,255,0.08)'; }}
+              onBlur={(e) => { e.target.style.borderColor = 'rgba(255,255,255,0.08)'; e.target.style.background = 'rgba(255,255,255,0.05)'; }}
+            />
+            <input
+              type="password"
+              placeholder="密码"
+              value={password}
+              onChange={(e) => setPassword(e.target.value)}
+              className="w-full"
+              style={{
+                padding: '13px 16px', borderRadius: 10,
+                background: 'rgba(255,255,255,0.05)',
+                border: '1px solid rgba(255,255,255,0.08)',
+                color: '#fff', fontSize: 14, outline: 'none',
+                transition: 'border-color 0.2s, background 0.2s',
+              }}
+              onFocus={(e) => { e.target.style.borderColor = 'rgba(168,85,247,0.4)'; e.target.style.background = 'rgba(255,255,255,0.08)'; }}
+              onBlur={(e) => { e.target.style.borderColor = 'rgba(255,255,255,0.08)'; e.target.style.background = 'rgba(255,255,255,0.05)'; }}
+            />
 
-            {/* Password */}
-            <div style={{ marginBottom: 40 }}>
-              <input
-                type="password"
-                placeholder="密码"
-                value={password}
-                onChange={(e) => setPassword(e.target.value)}
-                className="w-full"
-                style={{
-                  padding: '12px 0',
-                  background: 'transparent',
-                  border: 'none',
-                  borderBottom: '1px solid rgba(255,255,255,0.1)',
-                  borderRadius: 0,
-                  color: '#fff',
-                  fontSize: 14,
-                  outline: 'none',
-                  transition: 'border-color 0.25s',
-                }}
-                onFocus={(e) => {
-                  e.target.style.borderBottomColor = 'rgba(99,102,241,0.5)';
-                }}
-                onBlur={(e) => {
-                  e.target.style.borderBottomColor = 'rgba(255,255,255,0.1)';
-                }}
-              />
-            </div>
-
-            {/* Submit */}
             <button
               type="submit"
               disabled={loading || !username || !password}
               className="dg-gradient-bg w-full"
               style={{
-                padding: 12,
-                borderRadius: 6,
-                border: 'none',
-                color: '#fff',
-                fontWeight: 500,
-                fontSize: 14,
+                padding: '13px 20px', borderRadius: 10,
+                border: 'none', color: '#fff', fontWeight: 600, fontSize: 15,
                 cursor: loading || !username || !password ? 'not-allowed' : 'pointer',
-                opacity: loading || !username || !password ? 0.4 : 1,
+                opacity: loading || !username || !password ? 0.5 : 1,
+                marginTop: 4,
                 transition: 'opacity 0.2s, transform 0.1s',
-                letterSpacing: '0.5px',
+                boxShadow: '0 4px 20px rgba(168,85,247,0.25)',
               }}
             >
               {loading ? '登录中…' : '登录'}
diff --git a/frontend/src/pages/AppearanceSettings.tsx b/frontend/src/pages/AppearanceSettings.tsx
index 37596ae..dfa6012 100644
--- a/frontend/src/pages/AppearanceSettings.tsx
+++ b/frontend/src/pages/AppearanceSettings.tsx
@@ -11,7 +11,7 @@ const LOGIN_PREVIEW_COLORS: Record<LoginStyle, { bg: string; accent: string; lab
   centered: { bg: 'radial-gradient(ellipse at 50% 40%, #0a0a1a 0%, #1a0a2e 100%)', accent: '#8b5cf6', label: 'Stripe/Vercel' },
   sidepanel: { bg: 'linear-gradient(180deg, #111827 0%, #1f2937 100%)', accent: '#6366f1', label: 'Slack/Figma' },
   fullimage: { bg: '#0d1117', accent: '#6366f1', label: 'GitHub/AWS' },
-  minimal: { bg: '#0a0a0a', accent: '#8b5cf6', label: 'Apple/Linear' },
+  minimal: { bg: 'linear-gradient(160deg, #0a0a1a 0%, #0f0a2a 40%, #150825 70%, #0a0a1a 100%)', accent: '#ec4899', label: 'Premium Dark' },
 };
 
 export default function AppearanceSettings() {
@@ -199,13 +199,21 @@ export default function AppearanceSettings() {
                     </div>
                   )}
                   {opt.id === 'minimal' && (
-                    <div className="absolute inset-0 flex flex-col items-center justify-center gap-1.5 p-2">
-                      <div className="w-2 h-2 rounded-full" style={{ background: `linear-gradient(135deg, ${preview.accent}, #a855f7)` }} />
-                      <div className="w-8 h-0.5 rounded-sm" style={{ background: 'rgba(255,255,255,0.15)' }} />
-                      <div className="w-6 h-px my-1" style={{ background: 'rgba(255,255,255,0.1)' }} />
-                      <div className="w-full h-0.5 rounded-sm" style={{ background: 'rgba(255,255,255,0.06)' }} />
-                      <div className="w-full h-0.5 rounded-sm" style={{ background: 'rgba(255,255,255,0.06)' }} />
-                      <div className="w-full h-0.5 rounded-sm mt-0.5" style={{ background: preview.accent, opacity: 0.4 }} />
+                    <div className="absolute inset-0" style={{ background: 'linear-gradient(160deg, #0a0a1a, #0f0a2a, #150825)' }}>
+                      {/* Flowing curve ribbons */}
+                      <div className="absolute" style={{ top: '15%', left: '-20%', width: '140%', height: '40%', background: 'linear-gradient(135deg, rgba(236,72,153,0.2), rgba(168,85,247,0.15))', borderRadius: '50%', filter: 'blur(8px)', transform: 'rotate(-12deg)' }} />
+                      <div className="absolute" style={{ top: '35%', left: '-10%', width: '120%', height: '30%', background: 'linear-gradient(135deg, rgba(129,140,248,0.15), rgba(192,132,252,0.1))', borderRadius: '50%', filter: 'blur(6px)', transform: 'rotate(5deg)' }} />
+                      <div className="absolute" style={{ top: '55%', left: '5%', width: '90%', height: '15%', background: 'linear-gradient(90deg, transparent, rgba(244,114,182,0.2), rgba(192,132,252,0.15), transparent)', borderRadius: '50%', filter: 'blur(4px)', transform: 'rotate(-8deg)' }} />
+                      {/* Center card */}
+                      <div className="absolute inset-0 flex items-center justify-center">
+                        <div className="w-3/4 rounded-md p-1.5 flex flex-col items-center gap-0.5" style={{ background: 'rgba(255,255,255,0.04)', border: '1px solid rgba(255,255,255,0.06)', backdropFilter: 'blur(4px)' }}>
+                          <div className="w-3 h-1 rounded-sm" style={{ background: 'rgba(255,255,255,0.3)' }} />
+                          <div className="w-5 h-0.5 rounded-sm" style={{ background: 'rgba(255,255,255,0.12)' }} />
+                          <div className="w-full h-0.5 rounded-sm" style={{ background: 'rgba(255,255,255,0.06)' }} />
+                          <div className="w-full h-0.5 rounded-sm" style={{ background: 'rgba(255,255,255,0.06)' }} />
+                          <div className="w-full h-1 rounded-sm mt-0.5" style={{ background: 'linear-gradient(90deg, #ec4899, #a855f7)', opacity: 0.5 }} />
+                        </div>
+                      </div>
                     </div>
                   )}
                 </div>
diff --git a/frontend/src/pages/LoginPage.tsx b/frontend/src/pages/LoginPage.tsx
index 437d353..9322368 100644
--- a/frontend/src/pages/LoginPage.tsx
+++ b/frontend/src/pages/LoginPage.tsx
@@ -20,7 +20,7 @@ export const LOGIN_STYLE_OPTIONS: { id: LoginStyle; name: string; desc: string }
   { id: 'centered', name: '居中卡片', desc: '渐变背景，居中登录卡片' },
   { id: 'sidepanel', name: '侧边面板', desc: '左侧品牌面板 + 右侧表单' },
   { id: 'fullimage', name: '全屏背景', desc: '科技背景，毛玻璃卡片' },
-  { id: 'minimal', name: '极简暗色', desc: '极致简约，纯暗色风格' },
+  { id: 'minimal', name: '深蓝紫曲线', desc: '优雅暗黑，粉紫流动曲线' },
 ];
 
 export default function LoginPage() {