diff --git a/src/styles/variables.less b/src/styles/variables.less
index 326099b..22a51ea 100644
--- a/src/styles/variables.less
+++ b/src/styles/variables.less
@@ -36,6 +36,8 @@
 @spacing-lg: 24px;
 @spacing-xl: 32px;
 @spacing-xxl: 48px;
+/** 内容区底边到页脚的最小留白（老大指定 20px，不在 4/8 梯度内） */
+@spacing-page-bottom: 20px;
 
 @font-size-xs: 10px;
 @font-size-sm: 12px;
diff --git a/src/views/project/after-sales.vue b/src/views/project/after-sales.vue
index 162a931..83ea2f5 100644
--- a/src/views/project/after-sales.vue
+++ b/src/views/project/after-sales.vue
@@ -306,7 +306,7 @@ onMounted(() => {
 <style lang="less" scoped>
 .after-sales {
   .flex(column, flex-start, stretch);
-  padding-bottom: 40px;
+  padding-bottom: @spacing-page-bottom;
   background: @white;
 
   // 设计稿 el40 面包屑 y=116，header 底 72 → padding-top 44px。
diff --git a/src/views/project/detail.vue b/src/views/project/detail.vue
index 1b7734d..3198579 100644
--- a/src/views/project/detail.vue
+++ b/src/views/project/detail.vue
@@ -177,6 +177,7 @@ onMounted(load)
 .project-detail {
   .flex(column, flex-start, stretch);
   gap: 0;
+  padding-bottom: @spacing-page-bottom;
   background: @white;
 
   // 设计稿 el55 面包屑 y=116，header 底 72 → padding-top 44px。
diff --git a/src/views/project/index.vue b/src/views/project/index.vue
index 47d150d..43f6af1 100644
--- a/src/views/project/index.vue
+++ b/src/views/project/index.vue
@@ -111,7 +111,7 @@ onMounted(() => {
 
 <style lang="less" scoped>
 .project {
-  padding-bottom: @spacing-xxl;
+  padding-bottom: @spacing-page-bottom;
 
   &__head {
     padding: 16px 0 32px;