diff --git a/js/snow-canvas.js b/js/snow-canvas.js
index b1b35c4..276bbea 100644
--- a/js/snow-canvas.js
+++ b/js/snow-canvas.js
@@ -36,14 +36,7 @@
       const val = typeof shapeWeightsRaw[key] !== 'undefined' ? parseInt(shapeWeightsRaw[key], 10) : defaultShapeWeights[key];
       shapeWeights[key] = isNaN(val) ? defaultShapeWeights[key] : Math.max(0, val);
     }
-    const sizeScaleRaw = (window.YooneSnowSettings && typeof window.YooneSnowSettings.sizeScale !== 'undefined')
-      ? parseFloat(window.YooneSnowSettings.sizeScale)
-      : 1.0;
-    const offsetScaleRaw = (window.YooneSnowSettings && typeof window.YooneSnowSettings.offsetScale !== 'undefined')
-      ? parseFloat(window.YooneSnowSettings.offsetScale)
-      : 1.0;
-    const sizeScale = isNaN(sizeScaleRaw) ? 1.0 : Math.max(0.1, sizeScaleRaw);
-    const offsetScale = isNaN(offsetScaleRaw) ? 1.0 : Math.max(0, offsetScaleRaw);
+    // 移除单独的尺寸与偏移缩放 直接使用最小半径与最小摆动作为缩放系数
     const radiusMinRaw = (window.YooneSnowSettings && typeof window.YooneSnowSettings.radiusMin !== 'undefined')
       ? parseFloat(window.YooneSnowSettings.radiusMin)
       : 1.0;
@@ -62,8 +55,8 @@
     const swingMaxRaw = (window.YooneSnowSettings && typeof window.YooneSnowSettings.swingMax !== 'undefined')
       ? parseFloat(window.YooneSnowSettings.swingMax)
       : 1.0;
-    const radiusMin = isNaN(radiusMinRaw) ? 1.0 : Math.max(0, radiusMinRaw);
-    const radiusMax = isNaN(radiusMaxRaw) ? 3.0 : Math.max(radiusMin, radiusMaxRaw);
+    const radiusMin = isNaN(radiusMinRaw) ? 1 : Math.max(0, radiusMinRaw);
+    const radiusMax = isNaN(radiusMaxRaw) ? 3 : Math.max(radiusMin, radiusMaxRaw);
     const driftMin = isNaN(driftMinRaw) ? 0.4 : Math.max(0, driftMinRaw);
     const driftMax = isNaN(driftMaxRaw) ? 1.0 : Math.max(driftMin, driftMaxRaw);
     const swingMin = isNaN(swingMinRaw) ? 0.2 : Math.max(0, swingMinRaw);
@@ -130,9 +123,11 @@
       return {
         positionX: Math.random() * viewportWidth,
         positionY: -5 - Math.random() * 20,
-        radius: (Math.random() * (radiusMax - radiusMin) + radiusMin) * sizeScale,
+        // 半径使用随机范围并乘以最小半径作为缩放因子
+        radius: (Math.random() * (radiusMax - radiusMin) + radiusMin) * radiusMin,
         driftSpeed: Math.random() * (driftMax - driftMin) + driftMin,
-        swingAmplitude: (Math.random() * (swingMax - swingMin) + swingMin) * offsetScale,
+        // 水平摆动使用随机范围并乘以最小摆动作为缩放因子
+        swingAmplitude: (Math.random() * (swingMax - swingMin) + swingMin) * swingMin,
         shapeType: chosenType,
         imageUrl: chosenImageUrl,
         // 标记该粒子是否已经移出视口 用于停止后清理
@@ -152,9 +147,11 @@
           if (!hasReachedDuration){
             flake.positionY = -5;
             flake.positionX = Math.random() * viewportWidth;
-            flake.radius = (Math.random() * (radiusMax - radiusMin) + radiusMin) * sizeScale;
+            // 重生时应用同样的半径缩放逻辑
+            flake.radius = (Math.random() * (radiusMax - radiusMin) + radiusMin) * radiusMin;
             flake.driftSpeed = Math.random() * (driftMax - driftMin) + driftMin;
-            flake.swingAmplitude = (Math.random() * (swingMax - swingMin) + swingMin) * offsetScale;
+            // 重生时应用同样的摆动缩放逻辑
+            flake.swingAmplitude = (Math.random() * (swingMax - swingMin) + swingMin) * swingMin;
           } else {
             flake.outOfView = true;
           }
diff --git a/yoone-snow.php b/yoone-snow.php
index be5f035..223c4d3 100644
--- a/yoone-snow.php
+++ b/yoone-snow.php
@@ -2,7 +2,7 @@
 /*
 Plugin Name: Yoone Snow
 Description: 首页 canvas 雪花效果
-Version: 1.3.0
+Version: 1.5.0
 Author: Yoone
 */
 
@@ -114,14 +114,19 @@ function yoone_snow_enqueue_assets() {
         if ($val < 0) { $val = 0; }
         $shape_weights[$k] = $val;
     }
+    // 读取尺寸组合设置 包含最小与最大半径 如未设置则回退到旧选项与默认值
+    $size_group = get_option('yoone_snow_size', array('min' => 1.0, 'max' => 3.0));
+    $radius_min_val = isset($size_group['min']) ? floatval($size_group['min']) : floatval(get_option('yoone_snow_radius_min', 1.0));
+    $radius_max_val = isset($size_group['max']) ? floatval($size_group['max']) : floatval(get_option('yoone_snow_radius_max', 3.0));
+    if ($radius_min_val < 0) { $radius_min_val = 0.0; }
+    if ($radius_max_val < $radius_min_val) { $radius_max_val = $radius_min_val; }
+
     wp_localize_script($script_handle, 'YooneSnowSettings', array(
         'selectedShapes' => $mixed_items_sanitized,
         'mediaItems' => $media_urls,
         'displayDurationSeconds' => intval(get_option('yoone_snow_home_duration', 0)),
-        'sizeScale' => floatval(get_option('yoone_snow_size_scale', 1.0)),
-        'offsetScale' => floatval(get_option('yoone_snow_offset_scale', 1.0)),
-        'radiusMin' => floatval(get_option('yoone_snow_radius_min', 1.0)),
-        'radiusMax' => floatval(get_option('yoone_snow_radius_max', 3.0)),
+        'radiusMin' => $radius_min_val,
+        'radiusMax' => $radius_max_val,
         'driftMin' => floatval(get_option('yoone_snow_drift_min', 0.4)),
         'driftMax' => floatval(get_option('yoone_snow_drift_max', 1.0)),
         'swingMin' => floatval(get_option('yoone_snow_swing_min', 0.2)),
@@ -421,83 +426,38 @@ function yoone_snow_register_settings() {
         'yoone_snow_section'
     );
 
-    register_setting('yoone_snow_options', 'yoone_snow_size_scale', array(
-        'type' => 'number',
+    // 尺寸组合设置 使用单一选项 snow size 存储最小与最大半径
+    register_setting('yoone_snow_options', 'yoone_snow_size', array(
+        'type' => 'array',
         'sanitize_callback' => function($value) {
-            $num = floatval($value);
-            if ($num < 0.1) { $num = 0.1; }
-            return $num;
+            // 将输入统一为包含 min 与 max 的数值数组 并保证非负与 max 不小于 min
+            if (!is_array($value)) { $value = array(); }
+            $min = isset($value['min']) ? floatval($value['min']) : 1.0;
+            $max = isset($value['max']) ? floatval($value['max']) : 3.0;
+            if ($min < 0) { $min = 0.0; }
+            if ($max < $min) { $max = $min; }
+            return array('min' => $min, 'max' => $max);
         },
-        'default' => 1.0,
+        'default' => array('min' => 1.0, 'max' => 3.0),
     ));
 
     add_settings_field(
-        'yoone_snow_size_scale',
-        'Snow Size Scale',
+        'yoone_snow_size',
+        'Snow Size',
         function() {
-            $current = floatval(get_option('yoone_snow_size_scale', 1.0));
-            echo '<input type="number" min="0.1" step="0.1" name="yoone_snow_size_scale" value="' . esc_attr($current) . '" style="width:120px;" />';
-            echo '<p class="description">Multiply snowflake radius default is 1.0</p>';
+            // 渲染组合输入 使用同一选项保存最小与最大半径
+            $grp = get_option('yoone_snow_size', array('min' => 1.0, 'max' => 3.0));
+            $min = isset($grp['min']) ? floatval($grp['min']) : 1.0;
+            $max = isset($grp['max']) ? floatval($grp['max']) : 3.0;
+            echo '<label style="margin-right:12px;">Min <input type="number" min="0" step="0.1" name="yoone_snow_size[min]" value="' . esc_attr($min) . '" style="width:120px;" /></label>';
+            echo '<label>Max <input type="number" min="0" step="0.1" name="yoone_snow_size[max]" value="' . esc_attr($max) . '" style="width:120px;" /></label>';
+            echo '<p class="description">Random radius in [min max] single option</p>';
         },
         'yoone_snow',
         'yoone_snow_section'
     );
 
-    register_setting('yoone_snow_options', 'yoone_snow_offset_scale', array(
-        'type' => 'number',
-        'sanitize_callback' => function($value) {
-            $num = floatval($value);
-            if ($num < 0) { $num = 0; }
-            return $num;
-        },
-        'default' => 1.0,
-    ));
-
-    add_settings_field(
-        'yoone_snow_offset_scale',
-        'Snow Horizontal Offset Scale',
-        function() {
-            $current = floatval(get_option('yoone_snow_offset_scale', 1.0));
-            echo '<input type="number" min="0" step="0.1" name="yoone_snow_offset_scale" value="' . esc_attr($current) . '" style="width:120px;" />';
-            echo '<p class="description">Multiply horizontal swing amplitude default is 1.0</p>';
-        },
-        'yoone_snow',
-        'yoone_snow_section'
-    );
-
-    // 随机范围设置 注册与字段渲染 包含半径 漂移速度 摆动幅度的最小与最大
-    register_setting('yoone_snow_options', 'yoone_snow_radius_min', array(
-        'type' => 'number',
-        'sanitize_callback' => function($value) {
-            $num = floatval($value);
-            if ($num < 0) { $num = 0; }
-            return $num;
-        },
-        'default' => 1.0,
-    ));
-    register_setting('yoone_snow_options', 'yoone_snow_radius_max', array(
-        'type' => 'number',
-        'sanitize_callback' => function($value) {
-            $min = floatval(get_option('yoone_snow_radius_min', 1.0));
-            $num = floatval($value);
-            if ($num < $min) { $num = $min; }
-            return $num;
-        },
-        'default' => 3.0,
-    ));
-    add_settings_field(
-        'yoone_snow_radius_range',
-        'Radius Random Range',
-        function() {
-            $min = floatval(get_option('yoone_snow_radius_min', 1.0));
-            $max = floatval(get_option('yoone_snow_radius_max', 3.0));
-            echo '<label style="margin-right:12px;">Min <input type="number" min="0" step="0.1" name="yoone_snow_radius_min" value="' . esc_attr($min) . '" style="width:120px;" /></label>';
-            echo '<label>Max <input type="number" min="0" step="0.1" name="yoone_snow_radius_max" value="' . esc_attr($max) . '" style="width:120px;" /></label>';
-            echo '<p class="description">Random radius in [min max] before size scale</p>';
-        },
-        'yoone_snow',
-        'yoone_snow_section'
-    );
+    // 漂移速度与摆动幅度的随机范围设置 保持独立选项
 
     register_setting('yoone_snow_options', 'yoone_snow_drift_min', array(
         'type' => 'number',