diff --git a/figma-design.png b/figma-design.png
deleted file mode 100644
index d4fb1e0..0000000
Binary files a/figma-design.png and /dev/null differ
diff --git a/frontend/pages/support-activity/components/ActivityRankingModal.vue b/frontend/pages/support-activity/components/ActivityRankingModal.vue
index 7dcc043..01f9422 100644
--- a/frontend/pages/support-activity/components/ActivityRankingModal.vue
+++ b/frontend/pages/support-activity/components/ActivityRankingModal.vue
@@ -642,6 +642,7 @@ onUnmounted(() => {
 .close-button {
 	position: absolute;
 	left: 64rpx;
+	top: -32rpx;
 	width: 56rpx;
 	height: 56rpx;
 	display: flex;
@@ -650,8 +651,8 @@ onUnmounted(() => {
 }
 
 .close-icon-img {
-	width: 80rpx;
-	height: 80rpx;
+	width: 40rpx;
+	height: 40rpx;
 }
 
 /* 滚动内容区域 */
diff --git a/supabase/migrations/20260515_create_materials_and_asset_material_relations.sql b/supabase/migrations/20260515_create_materials_and_asset_material_relations.sql
deleted file mode 100644
index cfd7bf4..0000000
--- a/supabase/migrations/20260515_create_materials_and_asset_material_relations.sql
+++ /dev/null
@@ -1,49 +0,0 @@
--- 素材主表
-CREATE TABLE materials (
-    id BIGSERIAL PRIMARY KEY,
-    oss_key VARCHAR(255) NOT NULL,
-    original_name VARCHAR(255) NOT NULL,
-    file_size BIGINT NOT NULL,
-    mime_type VARCHAR(100) NOT NULL,
-    width INT,
-    height INT,
-    hash VARCHAR(64) NOT NULL,
-    created_by BIGINT NOT NULL,
-    star_id BIGINT NOT NULL DEFAULT 0,
-    created_at BIGINT NOT NULL,
-    updated_at BIGINT NOT NULL,
-    deleted_at BIGINT
-);
-
-CREATE UNIQUE INDEX uk_materials_oss_key ON materials(oss_key);
-CREATE INDEX idx_materials_hash ON materials(hash);
-CREATE INDEX idx_materials_created_by ON materials(created_by);
-CREATE INDEX idx_materials_star_id ON materials(star_id);
-
--- 资产-素材关联表
-CREATE TABLE asset_material_relations (
-    id BIGSERIAL PRIMARY KEY,
-    asset_id BIGINT NOT NULL REFERENCES assets(id) ON DELETE CASCADE,
-    material_id BIGINT NOT NULL REFERENCES materials(id) ON DELETE RESTRICT,
-    material_type VARCHAR(50) NOT NULL,
-    layer_order INT NOT NULL DEFAULT 0,
-    pos_x DOUBLE PRECISION,
-    pos_y DOUBLE PRECISION,
-    opacity DOUBLE PRECISION DEFAULT 1.0,
-    rotation DOUBLE PRECISION DEFAULT 0,
-    scale_x DOUBLE PRECISION DEFAULT 1.0,
-    scale_y DOUBLE PRECISION DEFAULT 1.0,
-    version INT NOT NULL DEFAULT 1,
-    created_at BIGINT NOT NULL,
-    updated_at BIGINT NOT NULL,
-    deleted_at BIGINT
-);
-
--- 索引
-CREATE INDEX idx_amr_asset_id ON asset_material_relations(asset_id) WHERE deleted_at IS NULL;
-CREATE INDEX idx_amr_material_id ON asset_material_relations(material_id) WHERE deleted_at IS NULL;
-CREATE INDEX idx_amr_asset_type_layer ON asset_material_relations(asset_id, material_type, layer_order) WHERE deleted_at IS NULL;
-
--- 部分唯一索引（软删除感知）
-CREATE UNIQUE INDEX uk_amr_asset_type_active ON asset_material_relations(asset_id, material_type) WHERE deleted_at IS NULL;
-CREATE UNIQUE INDEX uk_amr_asset_layer_active ON asset_material_relations(asset_id, layer_order) WHERE deleted_at IS NULL;