重构项目，方便开发

frontend-vue/src/styles/main.css

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+@import './tokens.css';
+@import './reset.css';
+
+body {
+  background: var(--color-bg-light);
+}
+
+html {
+  scrollbar-color: rgba(123, 135, 148, 0.7) rgba(255, 255, 255, 0.04);
+  scrollbar-width: thin;
+}
+
+*::-webkit-scrollbar {
+  width: 10px;
+  height: 10px;
+}
+
+*::-webkit-scrollbar-track {
+  background: rgba(255, 255, 255, 0.04);
+}
+
+*::-webkit-scrollbar-thumb {
+  background: rgba(123, 135, 148, 0.7);
+  border: 2px solid transparent;
+  border-radius: 999px;
+  background-clip: padding-box;
+}
+
+*::-webkit-scrollbar-thumb:hover {
+  background: rgba(148, 163, 184, 0.9);
+  border: 2px solid transparent;
+  background-clip: padding-box;
+}
+
+*::-webkit-scrollbar-corner {
+  background: transparent;
+}
+
+.page-shell {
+  min-height: 100vh;
+}
+
+.theme-light {
+  background: var(--color-bg-light);
+  color: var(--color-text-primary);
+}
+
+.theme-dark {
+  background: var(--color-bg-dark);
+  color: var(--color-text-dark);
+}

frontend-vue/src/styles/reset.css

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+* {
+  box-sizing: border-box;
+}
+
+html,
+body,
+#app {
+  margin: 0;
+  min-height: 100%;
+}
+
+body {
+  font-family: var(--font-family-base);
+  color: var(--color-text-primary);
+}
+
+a {
+  color: inherit;
+  text-decoration: none;
+}
+
+button,
+input,
+select,
+textarea {
+  font: inherit;
+}

frontend-vue/src/styles/tokens.css

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+:root {
+  --font-family-base: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
+  --color-primary: #409eff;
+  --color-bg-light: #eef3f8;
+  --color-bg-dark: #0d0d0d;
+  --color-surface-light: rgba(255, 255, 255, 0.92);
+  --color-surface-dark: #1a1a1a;
+  --color-border-light: #d6e4ef;
+  --color-border-dark: #2a2a2a;
+  --color-text-primary: #303133;
+  --color-text-secondary: #606266;
+  --color-text-dark: #e5eaf3;
+  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
+  --radius-lg: 16px;
+  --radius-md: 12px;
+  --radius-sm: 8px;
+}