:root {
    /* --- 品牌色 (Brand Colors) --- */
    --color-primary: #2240C4;
    --color-primary-rgb: 34, 64, 196; /* 用于 rgba，例如 rgba(var(--color-primary-rgb), 0.1) */
    --color-primary-dark: #1a32a0;
    --color-primary-light: rgba(34, 64, 196, 0.1);
    --color-primary-light-bg: rgba(34, 64, 196, 0.05);

    /* --- 文本颜色 (Text Colors) --- */
    --color-text-main: #1a1a1a;
    --color-text-dark: #1a202c;
    --color-text-secondary: #666666;
    --color-text-light: #999999;
    --color-text-white: #ffffff;
    --color-text-success: #16a57a;
    --color-text-error: #e55036;

    /* --- 背景颜色 (Background Colors) --- */
    --color-bg-body: #ffffff;
    --color-bg-dark: #1a1a1a;
    --color-bg-gray: #f5f5f7;
    --color-bg-subtle: #fafafb;
    --color-bg-green-light: #e8f5e9;
    --color-bg-overlay: rgba(255, 255, 255, 0.95);

    /* --- 边框颜色 (Border Colors) --- */
    --color-border: #e8e8ed;
    --color-border-light: #eeeeee;
    --color-border-dark: #333333;

    /* --- 字体 (Typography) --- */
    --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* --- 布局 (Layout) --- */
    --max-width-container: 1200px;
    --max-width-body: 1920px;
    --header-height: 70px;
}