:root {
    /* 背景色 */
    --bg-dark: #071018;
    --bg-panel: #0A1220;
    --bg-card: #0A1A28;
    
    /* 强调色 */
    --color-primary: #00E5FF;
    --color-secondary: #0078D7;
    --color-tertiary: #FFCC00; 
    
    /* 节点类型颜色 */
    --color-pv: #4DFFB8;
    --color-pq: #FFD740;
    --color-slack: #29B6F6;
    
    /* 状态色彩 */
    --color-warning: #FFC400;
    --color-success: #00E676;
    --color-danger: #FF1744;
    
    /* 阴影效果 */
    --shadow-glow: 0 0 20px rgba(0, 229, 255, 0.35);
    
    /* 其他变量 */
    --color-accent: #785A28;
    --color-text: #F1F5F9;
    --color-text-secondary: #94A3B8;
    --color-border: #1E3A5F;
    --color-grid: rgba(30, 58, 95, 0.3);
    --font-main: 'Roboto', 'Microsoft YaHei', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body, html {
    margin: 0;
    padding: 0;
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--color-text);
    height: 100%;
    overflow: hidden;
    line-height: 1.6;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 35%, rgba(0, 229, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 75% 65%, rgba(0, 120, 215, 0.08) 0%, transparent 50%),
        repeating-linear-gradient(0deg, transparent, transparent 24px, var(--color-grid) 24px, var(--color-grid) 25px),
        repeating-linear-gradient(90deg, transparent, transparent 24px, var(--color-grid) 24px, var(--color-grid) 25px);
    background-size: 100% 100%, 100% 100%, 25px 25px, 25px 25px;
    z-index: -1;
}