:root {
    --primary: #3498db;
    --secondary: #2980b9;
    --light: #ecf0f1;
    --success: #2ecc71;
    --warning: #f39c12;
    --danger: #e74c3c;
    --dark: #2c3e50;
    --water-blue: #1e88e5;
    --water-light: #bbdefb;
    
    /* 科技蓝主题颜色 */
    --tech-blue-dark: #0a2647;
    --tech-blue-mid: #144272;
    --tech-blue-light: #205295;
    --tech-blue-accent: #41b4ff;
}