diff --git a/src/hook/render/index.js b/src/hook/render/index.js
index 417528b..0148129 100644
--- a/src/hook/render/index.js
+++ b/src/hook/render/index.js
@@ -20,6 +20,7 @@ export class NetlistRender {
             id: 'root',
             layoutOptions: {
                 'elk.algorithm': 'layered',
+                'elk.progressBar': true,
                 'layered.nodePlacement.strategy': 'SIDE_BASED'
             },
             children: [],
diff --git a/src/hook/render/layout.js b/src/hook/render/layout.js
index 23fc7e3..220d547 100644
--- a/src/hook/render/layout.js
+++ b/src/hook/render/layout.js
@@ -5,7 +5,8 @@
 import { globalLookup } from "../global";
 import { Cell, CELL_LIBS, ModuleTree } from "./yosys";
 
-const SKIN_SCALE = 1;
+export const SKIN_SCALE = 1;
+export const LINE_WIDTH = 2;
 
 export const LAYOUT_CONSTANT = {
     // port
@@ -116,33 +117,90 @@ export class Module {
                 const width = meta.width * SKIN_SCALE;
 
                 const ports = [];
-                for (const connectionName of cell.nameToConnection.keys()) {
-                    const connection = cell.nameToConnection.get(connectionName);                
-                    const portSide = connection.direction === 'input' ? ELK_DIRECTION.LEFT: ELK_DIRECTION.RIGHT;
-                    
+
+                // 统计分配到左右两侧的 port
+                const leftSideConnections = [];
+                const rightSideConnections = [];
+
+                for (const conn of cell.nameToConnection.values()) {
+                    if (conn.direction === 'input') {
+                        leftSideConnections.push(conn);
+                    } else {
+                        rightSideConnections.push(conn);
+                    }
+                }
+
+                // 计算左侧的
+                for (let i = 0; i < leftSideConnections.length; ++ i) {
+                    const connection = leftSideConnections[i];
                     const yOffset = meta.getPortYOffset(connection.name) * SKIN_SCALE;
+                    const targetY = yOffset;
+
+                    // 默认采用 JUSTIFIED，均分一侧的 height
+                    // 我们绘制的 svg 的 port offset y 未必和 elk 分配得到的一样，因此需要进行修正
+                    const layoutY = height / (leftSideConnections.length + 1) * (i + 1);
+                    const extraOffset = LINE_WIDTH * leftSideConnections.length;
+                    const anchorY = layoutY - targetY;
+
+                    console.log(targetY, layoutY, targetY - layoutY);
+
+                    let gap = (targetY - layoutY).toFixed(2);
+                    console.log('gap', gap);
                     
+                                        
                     ports.push({
                         id: connection.id,
-                        renderName: connectionName,
+                        renderName: connection.name,
                         renderType: 'cellPort',
-                        width: LAYOUT_CONSTANT.CELL_PORT_WIDTH,
-                        height: LAYOUT_CONSTANT.CELL_PORT_HEIGHT,
-                        y: yOffset,
+                        width: 0,
+                        height: 0,
                         properties: {
-                            'port.side': portSide
+                            'port.side': ELK_DIRECTION.LEFT,
+                            'port.anchor': `0, ${gap}`
                         }   
-                    })
+                    });
+
+                    console.log(ports.at(-1).properties["port.anchor"]);
+                    
                 }
 
+                // 计算右侧的
+                for (let i = 0; i < rightSideConnections.length; ++ i) {
+                    const connection = rightSideConnections[i];
+                    const yOffset = meta.getPortYOffset(connection.name) * SKIN_SCALE;
+                    const targetY = yOffset;
+
+                    // 默认采用 JUSTIFIED，均分一侧的 height
+                    // 我们绘制的 svg 的 port offset y 未必和 elk 分配得到的一样，因此需要进行修正
+                    const layoutY = height / (rightSideConnections.length + 1) * (i + 1);
+                    const extraOffset = LINE_WIDTH * rightSideConnections.length / 2;
+                    const anchorY = targetY - layoutY + extraOffset;                    
+
+                    ports.push({
+                        id: connection.id,
+                        renderName: connection.name,
+                        renderType: 'cellPort',
+                        width: 0,
+                        height: 0,
+                        properties: {
+                            'port.side': ELK_DIRECTION.RIGHT,
+                            'port.anchor': `0, ${anchorY}`
+                        }   
+                    });
+                }
+
+
                 const node = {
                     id: cell.id,
                     renderName: cell.type,
                     renderType: 'cell',
                     width,
                     height,
-                    ports
-                }
+                    ports,
+                    layoutOptions: {
+                        'org.eclipse.elk.portConstraints': 'FIXED_SIDE',
+                    }
+                };
                 nodes.push(node);
             } else {
                 // 例化模块
@@ -172,11 +230,11 @@ export class Module {
                     width,
                     height,
                     ports,
-                    properties: {
+                    layoutOptions: {
                         // 强制固定 port 的方向
-                        'portConstraints': 'FIXED_ORDER'
-                    },
-                }
+                        'org.eclipse.elk.portConstraints': 'FIXED_SIDE'
+                    }
+                };
 
                 nodes.push(node);
             }
diff --git a/src/hook/skin/index.js b/src/hook/skin/index.js
index e40782d..007fcfd 100644
--- a/src/hook/skin/index.js
+++ b/src/hook/skin/index.js
@@ -65,8 +65,8 @@ class SkinMeta {
         const parser = new DOMParser();
 
         // 颜色替换
-        svgString = svgString.replace(/#279BB0/g, 'var(--main-color)');
-        svgString = svgString.replace(/#000000/g, 'var(--main-dark-color)');
+        svgString = svgString.replace(/#279BB0/g, 'var(--main-dark-color)');
+        svgString = svgString.replace(/#000000/g, 'var(--main-color)');
 
         const svgDoc = parser.parseFromString(svgString, 'image/svg+xml');
         const element = svgDoc.documentElement;
@@ -94,7 +94,7 @@ class SkinMeta {
             return 0;
         }
         const transform = pathElement.getAttribute('transform');
-        const yOffset = transform.split(' ').at(-1);
+        const yOffset = parseFloat(transform.split(' ').at(-1));
         this.portToYOffset.set(portName, yOffset);
         return yOffset;
     }