diff --git a/.spec/specs/2026-10-25_add-media-and-polish/tasks.md b/.spec/specs/2026-10-25_add-media-and-polish/tasks.md
index 99e1083..11b0050 100644
--- a/.spec/specs/2026-10-25_add-media-and-polish/tasks.md
+++ b/.spec/specs/2026-10-25_add-media-and-polish/tasks.md
@@ -5,7 +5,7 @@
 
 ## 阶段一：实现
 
-- [ ] T1 灯箱原图/下载按钮美化
+- [x] T1 灯箱原图/下载按钮美化
   - claim: orchestrator
   - boundary: 只改 GalleryPage.astro 灯箱 lb-orig 区（升级为与 lbnav 同语言的胶囊按钮：图标+文字+悬停态）
   - verify: `pnpm astro build && grep -q "lb-orig" dist/gallery/index.html`
@@ -15,17 +15,17 @@
   - boundary: ArtalkComments.astro 内注入页面级覆盖样式（.atk-* 选择器，用 tokens 变量，明暗双态随 [data-theme]）；可调研 Artalk darkMode 配置项并在 init 传参；不改 Artalk 服务端
   - verify: `pnpm astro build && grep -q "atk-" src/components/ArtalkComments.astro`
 
-- [ ] T3 markdown 媒体支持
+- [x] T3 markdown 媒体支持
   - claim: orchestrator
   - boundary: src/styles/global.css 增媒体样式段（.prose-reading/.prose-tech 内 img/figure/video/audio：宽度/圆角/居中/图注样式）；验证 raw HTML 透传与图片优化
   - verify: `pnpm astro build`
 
-- [ ] T4 三媒样张
+- [x] T4 三媒样张
   - claim: op-artalk（mesh 车道，预约 content/posts/media-sample.md 与其资产目录）
   - boundary: ffmpeg 生成 3s 测试视频（<1MB）与 3s 音频；一张测试图；写一篇 draft:true 的样例文章（category: tech, draft 置 true 不上线仅构建验证）三媒齐用；不碰既有六篇
   - verify: `pnpm astro build && grep -q "<video" dist/archives/*/index.html -r | head -1`
 
-- [ ] T5 写作指南
+- [x] T5 写作指南
   - depends-on: task_0003
   - claim: orchestrator
   - boundary: 新建 docs/写作指南.md（三媒插入语法/资产目录约定 content/posts/assets/{slug}/）/体积纪律（图≤1MB 压缩后、音≤5MB、视频>5MB 走仓外 store+绝对 /media/ 路径待 build.sh 同步）