优化

src/styles/foundation.css

@@ -1,20 +1,80 @@
 :root {
   font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
-  color: #172033;
-  background: #f4f6f8;
+  color: #1d2939;
+  background: #f5f7fa;
   font-synthesis: none;
-  --cc-primary: #667eea;
-  --cc-navy: #667eea;
-  --cc-topbar: rgba(102, 126, 234, .95);
-  --cc-menu-active: #667eea;
-  --cc-border: #e3e8ef;
+  /* Core palette: restrained blue for actions, neutral surfaces for scanning. */
+  --cc-primary: #155eef;
+  --cc-primary-hover: #004eeb;
+  --cc-primary-soft: #eff4ff;
+  --cc-navy: #1d2939;
+  --cc-topbar: #1d2939;
+  --cc-menu-active: #155eef;
+  --cc-page: #f5f7fa;
+  --cc-surface: #ffffff;
+  --cc-surface-muted: #f8fafc;
+  --cc-border: #e4e7ec;
+  --cc-border-strong: #d0d5dd;
+  --cc-text: #1d2939;
+  --cc-text-secondary: #475467;
   --cc-muted: #667085;
+  --cc-placeholder: #98a2b3;
+  --cc-success: #067647;
+  --cc-success-soft: #ecfdf3;
+  --cc-warning: #b54708;
+  --cc-warning-soft: #fffaeb;
+  --cc-danger: #b42318;
+  --cc-danger-soft: #fef3f2;
+  --cc-info: #175cd3;
+  --cc-info-soft: #eff8ff;
+  --cc-focus: rgba(21, 94, 239, .28);
+  --cc-radius-sm: 4px;
+  --cc-radius-md: 6px;
+  --cc-radius-lg: 8px;
+  --cc-radius-pill: 999px;
+  --cc-shadow-sm: 0 1px 2px rgba(16, 24, 40, .05);
+  --cc-shadow-md: 0 4px 12px rgba(16, 24, 40, .08);
+  --cc-shadow-shell: 0 1px 4px rgba(16, 24, 40, .08);
+  --cc-space-1: 4px;
+  --cc-space-2: 8px;
+  --cc-space-3: 12px;
+  --cc-space-4: 16px;
+  --cc-space-5: 20px;
+  --cc-space-6: 24px;
+  --cc-space-7: 32px;
+
+  --el-color-primary: var(--cc-primary);
+  --el-color-primary-light-3: #84adff;
+  --el-color-primary-light-5: #b2ccff;
+  --el-color-primary-light-7: #d5e3ff;
+  --el-color-primary-light-8: #e1ebff;
+  --el-color-primary-light-9: var(--cc-primary-soft);
+  --el-color-primary-dark-2: var(--cc-primary-hover);
+  --el-color-success: var(--cc-success);
+  --el-color-warning: var(--cc-warning);
+  --el-color-danger: var(--cc-danger);
+  --el-color-info: var(--cc-info);
+  --el-border-color: var(--cc-border);
+  --el-border-color-light: #eaecf0;
+  --el-border-color-lighter: #f2f4f7;
+  --el-fill-color-light: var(--cc-surface-muted);
+  --el-fill-color-lighter: #fbfcfd;
+  --el-bg-color: var(--cc-surface);
+  --el-bg-color-page: var(--cc-page);
+  --el-text-color-primary: var(--cc-text);
+  --el-text-color-regular: var(--cc-text-secondary);
+  --el-text-color-secondary: var(--cc-muted);
+  --el-text-color-placeholder: var(--cc-placeholder);
+  --el-border-radius-base: var(--cc-radius-md);
+  --el-border-radius-small: var(--cc-radius-sm);
+  --el-border-radius-round: var(--cc-radius-pill);
+  --el-box-shadow-light: var(--cc-shadow-md);
 }
 
 * { box-sizing: border-box; }
 html, body, #app { width: 100%; min-width: 0; min-height: 100%; margin: 0; }
-body { min-height: 100vh; background: #f4f6f8; }
+body { min-height: 100vh; background: var(--cc-page); }
 button, input, textarea, select { font: inherit; }
 button { letter-spacing: 0; }
-:focus-visible { outline: 3px solid rgba(21, 94, 239, .28); outline-offset: 2px; }
+:focus-visible { outline: 3px solid var(--cc-focus); outline-offset: 2px; }
 .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }