diff --git a/AGENTS.local.bak.md b/AGENTS.local.bak.md
new file mode 100644
index 0000000..d50c85a
--- /dev/null
+++ b/AGENTS.local.bak.md
@@ -0,0 +1,103 @@
+# 水晶男孩推廣部 — AI 工作上下文
+
+> 這個檔案讓 AI 在任何裝置（家／學校）都能快速恢復上下文。
+> **每次對話做了重要決定，請叫我更新這裡，然後 git commit。**
+
+---
+
+## 專案簡介
+
+水晶男孩（Sechs Kies）推廣粉絲網站。靜態 HTML + PHP + 原生 CSS/JS，無框架。
+站主（Noopy）2016 年入坑，藝廊式創作風格。
+
+---
+
+## 規範速查（詳細見 `developer-rules/rules/`）
+
+| 規範 | 檔案 |
+|------|------|
+| 改檔行為守則（必問再改） | `agent-must-ask.md` |
+| 變更邊界（只改被點名的） | `ai-change-boundaries.md` |
+| CSS 顏色 Token | `color-tokens.md` |
+| 版面視覺預設 | `design-defaults.md` |
+| Git commit 規範 | `git-commit-required.md` |
+| 導覽邏輯（portal-nav） | `portal-nav-rules.md` |
+| 文案語調 | `site-voice.md` |
+
+**最重要的三條：**
+1. 沒說「執行」→ 不改檔
+2. 只改被點名的那一頁／區塊
+3. 改完必附 commit 指令（禁止在 sandbox 跑 git）
+
+---
+
+## 架構重點
+
+- **全站導覽**：`assets/js/portal-nav.js`（`COMING_SOON_PAGES` 控制開放）
+- **全站 CSS**：`assets/css/style.css`（定義所有 color token）
+- **首頁**：`index.html`
+- **站主索引**（自用）：`extra/site-guide.html`（`data-portal-nav-all-open`，不對外）
+- **內頁 header class**：`inner-page-header`（禁改回舊名）
+
+### variety/ 頁面
+
+| 檔案 | 頁面標題 | 說明 |
+|------|----------|------|
+| `variety/bangxiao.html` | 世紀級寶藏 / 爆笑養老院 | 甜蜜負擔計量器；六人卡片選取 + jQuery 計算；CTA → `totoga2/ebook.html` |
+| `variety/variety-shows.html` | 全員發瘋 | 綜藝節目存檔表；tabs + 搜尋；已對齊 albums.html 扁平結構 |
+| `variety/NJTW/NJTW5.html` | 新西遊記5 | 各自暴走專頁 |
+
+---
+
+## portal-nav 操作守則（血淚版）
+
+> 每次新增或修改導覽，必須先讀這裡再動手。
+
+1. **先查 `extra/site-guide.html` 確認層級**，再動 `portal-nav.js`。  
+   site-guide 的 depth 數字 = nav 的層級：depth-1 是第一層 `<li>`，depth-2 是子選單項目，depth-3 是 subgroup 裡的巢狀項目。
+
+2. **`COMING_SOON_PAGES` 只放檔名**（不含路徑）。  
+   `normalizePageKey` 只取 href 最後一段，所以 `variety/bangxiao.html` → 比對 `bangxiao.html`。
+
+3. **直接連結不需要 subgroup**。  
+   子選單內只要 `<li><a>` 就夠；`portal-nav__subgroup` 只在該項目還有巢狀子項目時才用（例如「傳奇的轉折」有時間軸、電子書等四項）。
+
+4. **site-guide.html 要同步更新**，否則站主索引頁會顯示舊名稱。
+
+5. **commit 前網站不會更新**。本地端強制重整用 `Ctrl+Shift+R`；GitHub Pages 需 `git push` 後等約 1 分鐘。
+
+---
+
+## 目前工作狀態
+
+<!-- 每次對話結束後更新這個區塊 -->
+
+**最後更新：** 2026-06-17
+
+**進行中：**
+- 無
+
+**待確認：**
+- developer-rules 健檢尚未執行
+
+**已完成：**
+- 建立 AGENTS.md 跨裝置上下文檔案
+- 新增 `variety/bangxiao.html`（世紀級寶藏 / 爆笑養老院，甜蜜負擔計量器）
+- `variety/variety-shows.html` 重構：移除多層包裝，對齊 albums.html 扁平結構
+- portal-nav 新增世紀級寶藏，正確放入淪陷瞬間子選單
+- `extra/site-guide.html` 同步更新：全員發瘋 → 世紀級寶藏
+
+---
+
+## 如何使用這個檔案
+
+換裝置後，告訴 AI：
+> 「請先讀 AGENTS.md，再讀 developer-rules/rules/ 裡的所有規範，然後繼續 [任務]。」
+
+## Imported Claude Cowork project instructions
+
+在這個專案資料夾中，有一個名為 developer-rules 的資料夾。
+
+這是我們第一次合作，我不確定裡面目前記錄的規範是否完全正確、有沒有被之前亂寫的扣給弄髒。
+
+請你在初始化專案後，立刻去徹底閱讀 developer-rules 裡的所有內容，並且不要盲目死背。請幫我仔細檢查、挑出裡面是否有前後矛盾、不夠乾淨、或是不符合現代高標準前端美感與 PHP 結構的規範。讀完後，請在我們的第一次對話中，條理分明地向我回報你的健檢結果，並給出優化建議，等我確認後我們再正式鎖定。
diff --git a/AGENTS.md b/AGENTS.md
index e163350..952ad0b 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -72,13 +72,15 @@
 
 <!-- 每次對話結束後更新這個區塊 -->
 
-**最後更新：** 2026-08-02
+**最後更新：** 2026-08-04
 
 **進行中：**
-- 水晶熱舞社重啟：30TH 報名與水晶練習室練舞清單已接上後臺；播放器本身仍待加入合法影片來源
+- 無
 
 **待確認：**
 - developer-rules 健檢尚未執行
+- `sechskies_fans`（新獨立專案）本機尚未建 MySQL 資料庫、尚未跑過 `admin/setup.php`；Render 部署中，資料庫主機未定
+- `portal-nav.js` 新增的「水晶練習室」項目目前是 `data-coming-soon` 佔位（href=`#`），等 sechskies_fans 網址確定後要補上真實外部連結並移除 coming-soon 標記
 
 **已完成：**
 - 建立 AGENTS.md 跨裝置上下文檔案
@@ -87,11 +89,8 @@
 - portal-nav 新增世紀級寶藏，正確放入淪陷瞬間子選單
 - `extra/site-guide.html` 同步更新：全員發瘋 → 世紀級寶藏
 - 新增 `admin/` 推廣部後臺第一階段：登入、控制台、管理者帳號、通用 CRUD、媒體上傳及公開狀態總覽
-- 水晶熱舞社 30TH 募集表單已接上 PHP/PDO/MySQL，可儲存報名、參與內容與參考檔案
-- 後臺新增「30TH 應援報名」清單、搜尋、狀態處理、內部備註與受登入保護的檔案下載
-- 架構決定：水晶熱舞社暫時共用推廣部後臺；偶像培訓維持獨立資料邊界，之後另拆專案與登入系統
-- 水晶練習室的「練舞清單」已改為讀取 `dance_practice_items`，後臺可管理歌曲、分類、練習重點、影片網址、難度、進度、優先順序與公開狀態
-- 練舞清單初始資料沿用原頁面的 Couple、Com' Back、Road Fighter；偶像培訓的練習生／課程／紀錄未接入此資料表
+- 水晶熱舞社／水晶練習室／偶像練習生已於 2026-08-04 拆成獨立專案 `sechskies_fans`（另一個 repo，路徑 `d:\Developer\projects\sechskies_fans`，不在本站範圍）：30TH 應援報名表單、練舞清單、後台 CRUD 與管理者登入都已搬走並改用自己的資料庫；`extra/site-guide.html` 與本站 `admin/bootstrap.php`／`admin/database/schema.sql` 已同步移除相關項目
+- `portal-nav.js` 頂欄新增第 7 項「水晶練習室」（Yellow Note 之後），連到獨立專案 sechskies_fans；`extra/site-guide.html` 同步新增對應項目；目前是 coming-soon 佔位，尚未接上真實網址
 
 ---
 
diff --git a/SECHSKIES_Crystal_Dance_Survey_Notion_Export.md b/SECHSKIES_Crystal_Dance_Survey_Notion_Export.md
deleted file mode 100644
index 74d2b85..0000000
--- a/SECHSKIES_Crystal_Dance_Survey_Notion_Export.md
+++ /dev/null
@@ -1,170 +0,0 @@
-# 水晶熱舞社頁面改版對話紀錄
-
-> 來源：`yellow-note/crystal-dance-survey.html` 改版討論  
-> 日期：2026-07-09  
-> 用途：可貼上 Notion 的整理稿
-
----
-
-## 一、任務目標
-
-把 **水晶熱舞社** 頁（`yellow-note/crystal-dance-survey.html`）從「自創黃框、多層卡片、閱讀擁擠」改成：
-
-1. **對齊首頁／全站簡約風格**（黑底 + 白卡片 + 品牌黃）
-2. **多套用全站 CSS**（`style.css` 的 `section`、`.section-title`、`.card` 語彙）
-3. **熱舞社相關內容不刪**（可改外觀與排版）
-4. **Bootstrap class 必須保留**（作業要求）
-5. **表單區參考「見面會應援調查表」的 summer-form 邊框排版**，顏色仍用全站黃色 token
-
----
-
-## 二、核心原則（這次定下來的）
-
-| 原則 | 說明 |
-|------|------|
-| 內容優先 | 跟熱舞社相關的資訊不要刪；外觀排版可以改 |
-| 只改被點名的頁 | 主要動 `crystal-dance-survey.html` |
-| Bootstrap 保留 | `row` / `col` / `form-control` / `form-select` / `btn-check` / `ratio` 等 class 留下 |
-| 顏色不動 | 用全站 `--color-brand` 系列，不改成參考圖的藍 |
-| 美感對齊 | 參考 index 簡約乾淨 + 參考圖的留白與分階段框線 |
-
----
-
-## 三、舊版問題診斷
-
-### 為什麼「怎麼看都不順眼」
-
-1. **雙重／三重卡片**  
-   全站 `section` 本身已是圓角白卡片，頁內又加 `video-card`、`song-card`、`form-panel` → 盒子套盒子。
-
-2. **約 400 行 inline CSS 重做設計系統**  
-   全站已有 `.card`、`.section-title`，卻自創多套黃框樣式。
-
-3. **`info-card` 深色漸層突兀**  
-   跟全站暖白、輕盈感相反。
-
-4. **導覽太吵**  
-   五顆黃色 pill 按鈕搶眼；首頁錨點是低調文字列。
-
-5. **UX 問題（後續回饋）**  
-   - 表單左右分欄難讀  
-   - 標題跟內容距離太近  
-   - 主影片寬度沒跟下方三支影片左右對齊  
-   - 文字擠在一起、閱讀節奏差
-
----
-
-## 四、結構重組（6 區 → 3 區）
-
-### 備份
-
-```
-yellow-note/crystal-dance-survey.backup-2026-07-09.html
-```
-
-（本地備份；改動前版本）
-
-### 新架構
-
-| 新區塊 | ID | 合併來源 | 合併理由 |
-|--------|-----|----------|----------|
-| ① 認識水晶熱舞社 | `#about` | Hero + 熱舞社介紹 | 都在回答「這是什麼」 |
-| ② 從 20TH 到 30TH | `#from-20th-to-30th` | 20TH 影片回顧 + 30TH 應援募集敘事 | 同一條時間軸：過去記憶 → 未來募集 |
-| ③ 30TH 應援募集表單 | `#form-30th` | 表單區獨立 | Bootstrap 表單作業清楚；敘事講完才行動 |
-
-### 移除
-
-- 整個 **經典舞曲區**（`#song-archive` 四張 song-card）
-- 歌曲資訊不丟：表單「想練的歌曲」`<select>` 仍保留 Couple / Com' Back / Road Fighter / Pom Saeng Pom Sa / 其他
-
----
-
-## 五、視覺與版型決策
-
-### 對齊全站
-
-- 骨架：`inner-page-header` → `portal-nav` → `particles` → `container` → `section`
-- 大區塊靠全站 `section` 白卡片浮在星空底上
-- 避免 section 內再套一層 `.card`（影片／表單尤甚）
-
-### 影片區
-
-- 主影片與下方三支延伸影片包在同一 `video-grid`
-- **主影片寬度與下方三欄左右切齊**（拿掉主影片單獨 `max-width: 720px` 置中）
-
-### 間距與閱讀
-
-- `.section-title` 與內文拉開（約 `2rem`）
-- 段落行高約 `1.9`、段間距加大
-- 子標題（延伸閱讀、30TH）上方留白加大，避免貼住上一段
-
----
-
-## 六、表單：summer-form 風格
-
-參考「見面會應援調查表」的**排版結構**，**顏色維持全站黃**：
-
-### 結構
-
-1. **填寫須知**（淡黃底邊框盒）
-2. **第一階段｜參與者基本資料**（暱稱、Email、練舞年數、可參與日期）
-3. **第二階段｜30TH 參與意向**（20TH 經驗、參與內容複選）
-4. **第三階段｜應援內容與祝福**（歌曲、上傳、留言）
-5. **底部按鈕**（重新填寫 / 送出並排）
-
-### 排版特徵
-
-- 階段標題在邊框盒**上方**、左對齊
-- 每階段獨立 `summer-form__stage-body`（圓角細邊框）
-- label 在上、輸入在下（單欄垂直流）
-- 不用表單左右分欄
-- Bootstrap class 全保留
-
-### Class 命名（頁面專用）
-
-- `.summer-form`
-- `.summer-form__stage`
-- `.summer-form__stage-title`
-- `.summer-form__stage-body`
-- `.summer-form__stage-body--notice`
-- `.summer-form__option-row`
-- `.summer-form__actions`
-
----
-
-## 七、必須保留的 Bootstrap class（作業）
-
-```html
-row / col-* / g-*
-form-label / form-control / form-select / form-text
-btn-check / btn
-ratio / ratio-16x9
-d-flex / flex-wrap / gap-* / mt-*
-```
-
----
-
-## 八、Git 狀態（對話當時）
-
-- Commit：`a977e78`  
-  `refactor: 水晶熱舞社頁面重組為三區並對齊全站簡約風格`
-- 已 push 至 `origin/main`（後續還有本地再改：間距、影片對齊、summer-form）
-- 後續的 summer-form／間距微調若尚未再 commit，需另開 commit
-
----
-
-## 九、給下次改這頁的檢查清單
-
-- [ ] 熱舞社敘事、20TH 影片、30TH 募集說明、表單欄位是否都在
-- [ ] 是否又出現「section 外套 + 內層黃框」雙重卡片
-- [ ] 主影片是否與下方三支左右對齊
-- [ ] 表單是否單欄分階段（summer-form），沒有左右表單／須知分欄
-- [ ] 標題與內文、區塊與區塊是否有足夠留白
-- [ ] Bootstrap 必要 class 是否還在
-- [ ] 顏色是否仍用 `--color-brand` 系列（沒偷換成藍色）
-
----
-
-## 十、一句話總結
-
-> **讓 Bootstrap 負責格線與表單元件，讓 `style.css` 負責全站美感；頁面專用 CSS 只補缺口。內容依敘事合三區，表單用 summer-form 分階段邊框，顏色不動。**
diff --git a/admin/bootstrap.php b/admin/bootstrap.php
index 0fd7bfc..a68704c 100644
--- a/admin/bootstrap.php
+++ b/admin/bootstrap.php
@@ -165,22 +165,6 @@ function modules(): array
             ],
             'list' => ['display_name', 'media_type', 'category', 'file_path', 'status', 'updated_at'],
         ],
-        'dance_practices' => [
-            'label' => '練舞清單', 'item_label' => '練舞項目', 'list_title' => '練舞清單', 'icon' => 'list-check', 'table' => 'dance_practice_items', 'order' => 'sort_order, id', 'group' => 'dance',
-            'fields' => [
-                'title' => ['label' => '歌曲名稱', 'type' => 'text', 'required' => true],
-                'tags' => ['label' => '練習分類', 'type' => 'text'],
-                'practice_focus' => ['label' => '練習重點', 'type' => 'textarea', 'required' => true],
-                'video_url' => ['label' => '參考影片網址', 'type' => 'url'],
-                'difficulty' => ['label' => '難度', 'type' => 'select', 'default' => 'medium', 'required' => true, 'options' => ['easy' => '入門', 'medium' => '中等', 'hard' => '挑戰']],
-                'progress_status' => ['label' => '練習進度', 'type' => 'select', 'default' => 'not_started', 'required' => true, 'options' => ['not_started' => '未開始', 'practicing' => '練習中', 'review' => '待複習', 'completed' => '已完成']],
-                'note_text' => ['label' => '補充說明', 'type' => 'text'],
-                'is_featured' => ['label' => '優先練習', 'type' => 'checkbox'],
-                'sort_order' => ['label' => '排序', 'type' => 'number', 'default' => '0'],
-                'status' => ['label' => '公開狀態', 'type' => 'status', 'required' => true],
-            ],
-            'list' => ['title', 'difficulty', 'progress_status', 'is_featured', 'sort_order', 'status', 'updated_at'],
-        ],
     ];
 }
 
@@ -199,51 +183,6 @@ function status_label(string $status): string
     return ['draft' => '草稿', 'coming_soon' => '籌備中', 'published' => '公開', 'archived' => '封存', 'available' => '可使用'][$status] ?? $status;
 }
 
-function dance_application_statuses(): array
-{
-    return [
-        'new' => '新報名',
-        'contacted' => '已聯絡',
-        'confirmed' => '確認參與',
-        'declined' => '暫不參與',
-        'archived' => '已封存',
-    ];
-}
-
-function dance_attendance_label(?string $value): string
-{
-    return [
-        'attended' => '參加過 20TH',
-        'watched_video' => '看過 20TH 影片',
-        'first_time' => '第一次知道',
-    ][$value ?? ''] ?? '未填寫';
-}
-
-function dance_song_label(?string $value): string
-{
-    return [
-        'couple' => 'Couple',
-        'comeback' => "Com' Back",
-        'road_fighter' => 'Road Fighter',
-        'pom_saeng_pom_sa' => 'Pom Saeng Pom Sa',
-        'other' => '其他',
-    ][$value ?? ''] ?? '未選擇';
-}
-
-function dance_content_labels(?string $value): array
-{
-    $labels = [
-        'cover' => '翻跳',
-        'medley' => '串燒聯舞',
-        'blessing' => '祝福影片',
-        'graphic' => '圖文應援',
-        'editing' => '影片剪輯',
-        'archive' => '資料整理',
-    ];
-    $selected = array_filter(array_map('trim', explode(',', (string) $value)));
-    return array_map(static fn (string $item): string => $labels[$item] ?? $item, $selected);
-}
-
 function audit(string $action, string $entityType, ?int $entityId, array $details = []): void
 {
     $stmt = db()->prepare('INSERT INTO audit_logs (admin_user_id, action_name, entity_type, entity_id, details_json, ip_address) VALUES (?, ?, ?, ?, ?, ?)');
@@ -279,15 +218,8 @@ function render_header(string $title, string $active = ''): void
             <a class="<?= $active === 'dashboard' ? 'active' : '' ?>" href="index.php"><i class="bi bi-speedometer2"></i>控制台</a>
             <p>內容資料</p>
             <?php foreach ($mods as $key => $mod): ?>
-                <?php if (($mod['group'] ?? 'content') === 'dance') continue; ?>
                 <a class="<?= $active === $key ? 'active' : '' ?>" href="records.php?module=<?= h($key) ?>"><i class="bi bi-<?= h($mod['icon']) ?>"></i><?= h($mod['label']) ?></a>
             <?php endforeach; ?>
-            <p>水晶熱舞社</p>
-            <?php foreach ($mods as $key => $mod): ?>
-                <?php if (($mod['group'] ?? 'content') !== 'dance') continue; ?>
-                <a class="<?= $active === $key ? 'active' : '' ?>" href="records.php?module=<?= h($key) ?>"><i class="bi bi-<?= h($mod['icon']) ?>"></i><?= h($mod['label']) ?></a>
-            <?php endforeach; ?>
-            <a class="<?= $active === 'dance-applications' ? 'active' : '' ?>" href="dance-applications.php"><i class="bi bi-person-hearts"></i>30TH 應援報名</a>
             <p>系統</p>
             <a class="<?= $active === 'publishing' ? 'active' : '' ?>" href="publishing.php"><i class="bi bi-eye"></i>公開狀態</a>
             <a class="<?= $active === 'admins' ? 'active' : '' ?>" href="admins.php"><i class="bi bi-shield-lock"></i>管理者帳號</a>
diff --git a/admin/dance-application-file.php b/admin/dance-application-file.php
deleted file mode 100644
index 7f6c051..0000000
--- a/admin/dance-application-file.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-declare(strict_types=1);
-require __DIR__ . '/bootstrap.php';
-require_login();
-
-$id = (int) ($_GET['id'] ?? 0);
-$stmt = db()->prepare('SELECT reference_file_name, reference_original_name, reference_mime_type FROM dance_applications WHERE id = ?');
-$stmt->execute([$id]);
-$file = $stmt->fetch();
-if (!$file || !$file['reference_file_name']) {
-    http_response_code(404);
-    exit('找不到檔案。');
-}
-
-$storedName = basename((string) $file['reference_file_name']);
-$path = (string) $config['dance_upload_dir'] . DIRECTORY_SEPARATOR . $storedName;
-if (!is_file($path)) {
-    http_response_code(404);
-    exit('檔案不存在。');
-}
-
-$downloadName = basename((string) ($file['reference_original_name'] ?: $storedName));
-$downloadName = str_replace(["\r", "\n", '"'], '', $downloadName);
-audit('download', 'dance_applications', $id, ['file' => $downloadName]);
-
-header('Content-Type: ' . ((string) $file['reference_mime_type'] ?: 'application/octet-stream'));
-header('Content-Length: ' . filesize($path));
-header("Content-Disposition: attachment; filename*=UTF-8''" . rawurlencode($downloadName));
-header('X-Content-Type-Options: nosniff');
-readfile($path);
-exit;
diff --git a/admin/dance-application.php b/admin/dance-application.php
deleted file mode 100644
index 434ec1c..0000000
--- a/admin/dance-application.php
+++ /dev/null
@@ -1,61 +0,0 @@
-<?php
-declare(strict_types=1);
-require __DIR__ . '/bootstrap.php';
-require_login();
-
-$id = (int) ($_GET['id'] ?? $_POST['id'] ?? 0);
-$statusOptions = dance_application_statuses();
-$stmt = db()->prepare('SELECT * FROM dance_applications WHERE id = ?');
-$stmt->execute([$id]);
-$application = $stmt->fetch();
-if (!$application) {
-    http_response_code(404);
-    exit('找不到這筆報名資料。');
-}
-
-$error = '';
-if ($_SERVER['REQUEST_METHOD'] === 'POST') {
-    verify_csrf();
-    $status = trim((string) ($_POST['status'] ?? ''));
-    $adminNotes = mb_substr(trim((string) ($_POST['admin_notes'] ?? '')), 0, 5000, 'UTF-8');
-    if (!isset($statusOptions[$status])) {
-        $error = '請選擇有效的處理狀態。';
-    } else {
-        $update = db()->prepare('UPDATE dance_applications SET status = ?, admin_notes = ? WHERE id = ?');
-        $update->execute([$status, $adminNotes !== '' ? $adminNotes : null, $id]);
-        audit('update', 'dance_applications', $id, ['status' => $status, 'admin_notes' => $adminNotes]);
-        flash('success', '報名資料的處理狀態已更新。');
-        redirect('dance-application.php?id=' . $id);
-    }
-}
-
-render_header('處理熱舞社報名 #' . $id, 'dance-applications');
-?>
-<?php if ($error): ?><div class="notice notice--error"><?= h($error) ?></div><?php endif; ?>
-<div class="toolbar"><a class="button" href="dance-applications.php"><i class="bi bi-arrow-left"></i>回報名清單</a></div>
-
-<section class="panel application-detail">
-    <div class="panel__head"><div><h2><?= h($application['nickname']) ?></h2><p>送出於 <?= h($application['created_at']) ?></p></div><span class="status status--<?= h($application['status']) ?>"><?= h($statusOptions[$application['status']] ?? $application['status']) ?></span></div>
-    <div class="detail-grid">
-        <div class="detail-item"><span>暱稱</span><strong><?= h($application['nickname']) ?></strong></div>
-        <div class="detail-item"><span>Email</span><a href="mailto:<?= h($application['email']) ?>"><?= h($application['email']) ?></a></div>
-        <div class="detail-item"><span>練舞經驗</span><strong><?= $application['dance_years'] !== null ? (int) $application['dance_years'] . ' 年' : '未填寫' ?></strong></div>
-        <div class="detail-item"><span>可參與日期</span><strong><?= h($application['available_date'] ?: '未填寫') ?></strong></div>
-        <div class="detail-item"><span>20TH 經驗</span><strong><?= h(dance_attendance_label($application['attended_20th'])) ?></strong></div>
-        <div class="detail-item"><span>想練的歌曲</span><strong><?= h(dance_song_label($application['song'])) ?></strong></div>
-        <div class="detail-item detail-item--wide"><span>想參與的內容</span><strong><?= h(implode('、', dance_content_labels($application['participate_content']))) ?></strong></div>
-        <div class="detail-item detail-item--wide"><span>30TH 留言</span><div class="detail-value"><?= $application['message_30th'] ? nl2br(h($application['message_30th'])) : '未填寫' ?></div></div>
-        <div class="detail-item detail-item--wide"><span>參考檔案</span><?php if ($application['reference_file_name']): ?><a class="button detail-download" href="dance-application-file.php?id=<?= $id ?>"><i class="bi bi-download"></i><?= h($application['reference_original_name'] ?: '下載檔案') ?><?php if ($application['reference_file_size']): ?>（<?= h(number_format((int) $application['reference_file_size'] / 1024 / 1024, 2)) ?> MB）<?php endif; ?></a><?php else: ?><strong>未上傳</strong><?php endif; ?></div>
-    </div>
-</section>
-
-<form class="panel editor" method="post">
-    <input type="hidden" name="csrf" value="<?= h(csrf_token()) ?>">
-    <input type="hidden" name="id" value="<?= $id ?>">
-    <div class="form-grid">
-        <label class="field"><span>處理狀態 *</span><select name="status" required><?php foreach ($statusOptions as $value => $label): ?><option value="<?= h($value) ?>" <?= $application['status'] === $value ? 'selected' : '' ?>><?= h($label) ?></option><?php endforeach; ?></select></label>
-        <label class="field field--wide"><span>內部備註</span><textarea name="admin_notes" rows="6" maxlength="5000" placeholder="例如：已寄信、等待確認練習日期……"><?= h((string) $application['admin_notes']) ?></textarea></label>
-    </div>
-    <div class="form-actions"><a class="button" href="dance-applications.php">取消</a><button class="button button--primary" type="submit">儲存處理狀態</button></div>
-</form>
-<?php render_footer();
diff --git a/admin/dance-applications.php b/admin/dance-applications.php
deleted file mode 100644
index 09ecec5..0000000
--- a/admin/dance-applications.php
+++ /dev/null
@@ -1,84 +0,0 @@
-<?php
-declare(strict_types=1);
-require __DIR__ . '/bootstrap.php';
-require_login();
-
-$page = max(1, (int) ($_GET['page'] ?? 1));
-$perPage = 15;
-$query = trim((string) ($_GET['q'] ?? ''));
-$status = trim((string) ($_GET['status'] ?? ''));
-$statusOptions = dance_application_statuses();
-$where = [];
-$params = [];
-
-if ($query !== '') {
-    $where[] = '(nickname LIKE ? OR email LIKE ? OR message_30th LIKE ?)';
-    $searchValue = '%' . $query . '%';
-    $params = [$searchValue, $searchValue, $searchValue];
-}
-if ($status !== '' && isset($statusOptions[$status])) {
-    $where[] = 'status = ?';
-    $params[] = $status;
-} else {
-    $status = '';
-}
-
-$whereSql = $where ? ' WHERE ' . implode(' AND ', $where) : '';
-$countStmt = db()->prepare('SELECT COUNT(*) FROM dance_applications' . $whereSql);
-$countStmt->execute($params);
-$total = (int) $countStmt->fetchColumn();
-$pages = max(1, (int) ceil($total / $perPage));
-$page = min($page, $pages);
-$offset = ($page - 1) * $perPage;
-
-$stmt = db()->prepare('SELECT * FROM dance_applications' . $whereSql . " ORDER BY created_at DESC, id DESC LIMIT $perPage OFFSET $offset");
-$stmt->execute($params);
-$rows = $stmt->fetchAll();
-
-render_header('30TH 應援報名', 'dance-applications');
-?>
-<div class="toolbar">
-    <form class="filters" method="get">
-        <label class="search"><i class="bi bi-search"></i><input name="q" value="<?= h($query) ?>" placeholder="搜尋暱稱、Email 或留言"></label>
-        <select name="status" aria-label="處理狀態">
-            <option value="">全部狀態</option>
-            <?php foreach ($statusOptions as $value => $label): ?>
-                <option value="<?= h($value) ?>" <?= $status === $value ? 'selected' : '' ?>><?= h($label) ?></option>
-            <?php endforeach; ?>
-        </select>
-        <button class="button" type="submit">篩選</button>
-    </form>
-    <a class="button" href="../yellow-note/crystal-dance-survey.html#form-30th" target="_blank" rel="noopener"><i class="bi bi-box-arrow-up-right"></i>查看募集表單</a>
-</div>
-
-<section class="panel">
-    <div class="panel__head"><div><h2>報名清單</h2><p>共 <?= $total ?> 筆；Email 與上傳檔案僅供企劃聯絡使用</p></div></div>
-    <div class="table-wrap">
-        <table>
-            <thead><tr><th>編號</th><th>暱稱</th><th>Email</th><th>想參與</th><th>歌曲</th><th>狀態</th><th>送出時間</th><th>操作</th></tr></thead>
-            <tbody>
-            <?php foreach ($rows as $row): ?>
-                <tr>
-                    <td>#<?= (int) $row['id'] ?></td>
-                    <td><?= h($row['nickname']) ?></td>
-                    <td><?= h(mb_strimwidth((string) $row['email'], 0, 34, '…', 'UTF-8')) ?></td>
-                    <td><?= h(implode('、', dance_content_labels($row['participate_content']))) ?></td>
-                    <td><?= h(dance_song_label($row['song'])) ?></td>
-                    <td><span class="status status--<?= h($row['status']) ?>"><?= h($statusOptions[$row['status']] ?? $row['status']) ?></span></td>
-                    <td><?= h($row['created_at']) ?></td>
-                    <td class="actions"><a href="dance-application.php?id=<?= (int) $row['id'] ?>">查看／處理</a></td>
-                </tr>
-            <?php endforeach; ?>
-            <?php if (!$rows): ?><tr><td colspan="8" class="empty">目前沒有符合條件的報名資料。</td></tr><?php endif; ?>
-            </tbody>
-        </table>
-    </div>
-    <?php if ($pages > 1): ?>
-        <nav class="pagination" aria-label="報名資料分頁">
-            <?php for ($i = 1; $i <= $pages; $i++): ?>
-                <a class="<?= $i === $page ? 'active' : '' ?>" href="?q=<?= urlencode($query) ?>&status=<?= urlencode($status) ?>&page=<?= $i ?>"><?= $i ?></a>
-            <?php endfor; ?>
-        </nav>
-    <?php endif; ?>
-</section>
-<?php render_footer();
diff --git a/admin/database/schema.sql b/admin/database/schema.sql
index 59a25af..f70fd5d 100644
--- a/admin/database/schema.sql
+++ b/admin/database/schema.sql
@@ -115,63 +115,6 @@ CREATE TABLE IF NOT EXISTS locations (
     CONSTRAINT fk_location_media FOREIGN KEY (media_id) REFERENCES media_assets(id) ON DELETE SET NULL
 ) ENGINE=InnoDB;
 
-CREATE TABLE IF NOT EXISTS dance_applications (
-    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
-    nickname VARCHAR(80) NOT NULL,
-    email VARCHAR(190) NOT NULL,
-    dance_years TINYINT UNSIGNED NULL,
-    available_date DATE NULL,
-    attended_20th ENUM('attended','watched_video','first_time') NULL,
-    participate_content VARCHAR(255) NOT NULL,
-    song VARCHAR(80) NULL,
-    reference_file_name VARCHAR(100) NULL,
-    reference_original_name VARCHAR(255) NULL,
-    reference_mime_type VARCHAR(100) NULL,
-    reference_file_size INT UNSIGNED NULL,
-    message_30th TEXT NULL,
-    status ENUM('new','contacted','confirmed','declined','archived') NOT NULL DEFAULT 'new',
-    admin_notes TEXT NULL,
-    submitted_ip VARCHAR(45) NULL,
-    user_agent VARCHAR(255) NULL,
-    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-    INDEX idx_dance_applications_status_created (status, created_at),
-    INDEX idx_dance_applications_email (email)
-) ENGINE=InnoDB;
-
-CREATE TABLE IF NOT EXISTS dance_practice_items (
-    id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
-    title VARCHAR(160) NOT NULL,
-    tags VARCHAR(255) NULL,
-    practice_focus TEXT NOT NULL,
-    video_url VARCHAR(500) NULL,
-    difficulty ENUM('easy','medium','hard') NOT NULL DEFAULT 'medium',
-    progress_status ENUM('not_started','practicing','review','completed') NOT NULL DEFAULT 'not_started',
-    note_text VARCHAR(255) NULL,
-    is_featured TINYINT(1) NOT NULL DEFAULT 0,
-    sort_order INT NOT NULL DEFAULT 0,
-    status ENUM('draft','coming_soon','published','archived') NOT NULL DEFAULT 'draft',
-    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-    INDEX idx_dance_practice_order (status, sort_order, id),
-    INDEX idx_dance_practice_title (title)
-) ENGINE=InnoDB;
-
-INSERT INTO dance_practice_items
-    (title, tags, practice_focus, difficulty, progress_status, note_text, is_featured, sort_order, status)
-SELECT 'Couple', 'Dance,Vocal', '副歌動作、隊形感、甜感表情', 'easy', 'not_started', '可作為第一首示範歌', 1, 10, 'published'
-WHERE NOT EXISTS (SELECT 1 FROM dance_practice_items WHERE title = 'Couple');
-
-INSERT INTO dance_practice_items
-    (title, tags, practice_focus, difficulty, progress_status, note_text, is_featured, sort_order, status)
-SELECT 'Com'' Back', 'Dance,Rap', '強拍、Rap 段落、舞台氣勢', 'medium', 'not_started', '未來擴充', 0, 20, 'coming_soon'
-WHERE NOT EXISTS (SELECT 1 FROM dance_practice_items WHERE title = 'Com'' Back');
-
-INSERT INTO dance_practice_items
-    (title, tags, practice_focus, difficulty, progress_status, note_text, is_featured, sort_order, status)
-SELECT 'Road Fighter', 'Dance,Rap,Performance', '節奏、力量、舞台感', 'hard', 'not_started', '未來擴充', 0, 30, 'coming_soon'
-WHERE NOT EXISTS (SELECT 1 FROM dance_practice_items WHERE title = 'Road Fighter');
-
 CREATE TABLE IF NOT EXISTS audit_logs (
     id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
     admin_user_id INT UNSIGNED NULL,
diff --git a/assets/js/portal-nav.js b/assets/js/portal-nav.js
index 24f8af6..20e1adb 100644
--- a/assets/js/portal-nav.js
+++ b/assets/js/portal-nav.js
@@ -234,7 +234,7 @@
     }
 
     /** 全站導覽 HTML — `rp` 為站根相對前綴；僅修改此模板即可同步所有頁面
-     * 六主項：淪陷瞬間、完整的六顆、現場的震撼、黃色留聲機、世紀級寶藏、Yellow Note。 */
+     * 七主項：淪陷瞬間、完整的六顆、現場的震撼、黃色留聲機、世紀級寶藏、Yellow Note、水晶練習室（外站 sechskies_fans，籌備中）。 */
     function buildPortalNavInnerHTML(rp) {
         return `
 <a class="logo" target="_blank" rel="noopener noreferrer" href="${rp}index.html"><img src="${rp}assets/images/logov.svg" alt="SECHSKIES Logo"></a>
@@ -279,6 +279,7 @@
             <li><a target="_blank" rel="noopener noreferrer" href="${rp}yellow-note/map.html"><span class="portal-nav__label">聖地巡禮</span></a></li>
         </ul>
     </li>
+    <li><a href="#" data-coming-soon="true" aria-disabled="true" aria-label="水晶練習室，尚無開放"><span class="portal-nav__label">水晶練習室</span></a></li>
 </ul>
 `.trim();
     }
diff --git a/extra/site-guide.html b/extra/site-guide.html
index 15c2839..81b0290 100644
--- a/extra/site-guide.html
+++ b/extra/site-guide.html
@@ -143,6 +143,9 @@
                             </li>
                         </ul>
                     </li>
+                    <li data-site-guide-depth="1">
+                        <span class="sg-node sg-node--extra sg-node--nolink" title="外站 sechskies_fans，籌備中（href=# data-coming-soon），尚未接上真實網址">水晶練習室（籌備中，外部連結待 sechskies_fans 部署完成後補上）</span>
+                    </li>
                     <li data-site-guide-depth="1">
                         <span class="sg-node sg-node--extra sg-node--nolink">站內其他頁面（草稿／作業／備查，不在頂欄）</span>
                         <ul>
@@ -165,13 +168,13 @@
                                     <li data-site-guide-depth="3"><span class="sg-node sg-node--extra"><a href="../s20260612_04_jq_calculator.html">s20260612_04_jq_calculator.html（學校作業）</a></span></li>
                                     <li data-site-guide-depth="3"><span class="sg-node sg-node--extra"><a href="../sechskies_brand_color_spec.html">sechskies_brand_color_spec.html（品牌色規範）</a></span></li>
                                     <li data-site-guide-depth="3"><span class="sg-node sg-node--extra"><a href="../totoga2/readable_ebookcontent.html">totoga2/readable_ebookcontent.html（電子書內容草稿）</a></span></li>
-                                    <li data-site-guide-depth="3"><span class="sg-node sg-node--extra"><a href="../yellow-note/crystal-dance-survey.html">yellow-note/crystal-dance-survey.html（問卷頁）</a></span></li>
                                     <li data-site-guide-depth="3"><span class="sg-node sg-node--extra"><a href="../variety/vedio-list.html">variety/vedio-list.html（深夜清單，追劇進度預覽頁）</a></span></li>
                                     <li data-site-guide-depth="3"><span class="sg-node sg-node--extra" title="admin/api/back 等 PHP 後台，非靜態站主線">variety/vedio-list/（追劇清單後台練習，非本站主線）</span></li>
-                                    <li data-site-guide-depth="3"><span class="sg-node sg-node--extra"><a href="../yellow-note/practice-room.html">yellow-note/practice-room.html（水晶練習室，舞蹈練習播放器）</a></span></li>
                                 </ul>
                             </li>
-                            <li data-site-guide-depth="2"><span class="sg-node sg-node--extra"><a href="../sechskies-admin-hw/index.html">sechskies-admin-hw/（另一份學校作業，非本站，與上方水晶練習室頁面無關）</a></span></li>
+                            <li data-site-guide-depth="2">
+                                <span class="sg-node sg-node--extra sg-node--nolink" title="2026-08-04 拆出，另一個 repo，不在本站範圍">水晶熱舞社／水晶練習室／偶像練習生 → 已拆成獨立專案 sechskies_fans</span>
+                            </li>
                             <li data-site-guide-depth="2">
                                 <span class="sg-node sg-node--extra sg-node--nolink" title="2026-05-16 15:56 備份，基準 commit fa8b04d，內容為當時尚未提交的修改與未追蹤新檔">待確認/（舊備份快照，滑鼠移入看說明）</span>
                                 <ul>
diff --git a/sechskies-admin-hw/admin/index.html b/sechskies-admin-hw/admin/index.html
deleted file mode 100644
index 845befb..0000000
--- a/sechskies-admin-hw/admin/index.html
+++ /dev/null
@@ -1,133 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>後台首頁｜水晶練習室 Admin</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <!-- 後台上方 Navbar -->
-  <nav class="navbar navbar-expand navbar-dark sk-navbar">
-    <div class="container-fluid">
-      <span class="navbar-brand mb-0"><i class="bi bi-gem me-1"></i>水晶練習室 <span class="fw-light">Admin</span></span>
-      <div class="d-flex gap-2">
-        <a class="btn btn-brand btn-sm" href="../index.html">回前台</a>
-        <a class="btn btn-outline-brand btn-sm" href="../index.html">登出</a>
-      </div>
-    </div>
-  </nav>
-
-  <div class="container-fluid">
-    <div class="row">
-
-      <!-- 左側管理選單 -->
-      <aside class="col-lg-2 border-end sk-admin-sidebar py-4 px-3 min-vh-100">
-        <nav class="nav flex-column">
-          <a class="nav-link active" href="index.html"><i class="bi bi-speedometer2 me-2"></i>後台首頁</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-people me-2"></i>練習生管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-mortarboard me-2"></i>課程管理</a>
-          <a class="nav-link" href="practices/index.html"><i class="bi bi-journal-text me-2"></i>練習紀錄管理</a>
-          <a class="nav-link" href="songs/index.html"><i class="bi bi-music-note-list me-2"></i>歌曲資料管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-list-task me-2"></i>訓練任務管理</a>
-        </nav>
-      </aside>
-
-      <!-- 主內容 -->
-      <main class="col-lg-10 py-4 px-4">
-        <h1 class="h3 mb-4 text-white">後台首頁</h1>
-
-        <div class="row g-4 mb-5">
-          <div class="col-sm-6 col-xl-3">
-            <div class="card sk-card shadow-sm h-100 p-3">
-              <div class="card-body">
-                <i class="bi bi-people fs-3 text-white"></i>
-                <div class="text-body-secondary small mt-2 mb-1">練習生人數</div>
-                <div class="sk-stat-value">6</div>
-              </div>
-            </div>
-          </div>
-          <div class="col-sm-6 col-xl-3">
-            <div class="card sk-card shadow-sm h-100 p-3">
-              <div class="card-body">
-                <i class="bi bi-lightning-charge fs-3 text-white"></i>
-                <div class="text-body-secondary small mt-2 mb-1">今日練習次數</div>
-                <div class="sk-stat-value">9</div>
-              </div>
-            </div>
-          </div>
-          <div class="col-sm-6 col-xl-3">
-            <div class="card sk-card shadow-sm h-100 p-3">
-              <div class="card-body">
-                <i class="bi bi-mortarboard fs-3 text-white"></i>
-                <div class="text-body-secondary small mt-2 mb-1">課程數量</div>
-                <div class="sk-stat-value">8</div>
-              </div>
-            </div>
-          </div>
-          <div class="col-sm-6 col-xl-3">
-            <div class="card sk-card shadow-sm h-100 p-3">
-              <div class="card-body">
-                <i class="bi bi-check2-circle fs-3 text-white"></i>
-                <div class="text-body-secondary small mt-2 mb-1">已完成任務數</div>
-                <div class="sk-stat-value">23</div>
-              </div>
-            </div>
-          </div>
-        </div>
-
-        <h2 class="sk-section-title"><i class="bi bi-journal-text"></i>最近練習紀錄</h2>
-
-        <div class="card sk-card sk-surface">
-          <div class="table-responsive">
-            <table class="table table-hover mb-0">
-              <thead>
-                <tr>
-                  <th>練習生</th>
-                  <th>日期</th>
-                  <th>訓練類型</th>
-                  <th>歌曲</th>
-                  <th>練習時間</th>
-                  <th>完成度</th>
-                </tr>
-              </thead>
-              <tbody>
-                <tr>
-                  <td>努比</td>
-                  <td>2026-07-16</td>
-                  <td><span class="badge badge-type badge-type--dance">舞蹈</span></td>
-                  <td>Road Fighter</td>
-                  <td>40 分鐘</td>
-                  <td>85%</td>
-                </tr>
-                <tr>
-                  <td>昇材</td>
-                  <td>2026-07-16</td>
-                  <td><span class="badge badge-type badge-type--vocal">vocal</span></td>
-                  <td>Couple</td>
-                  <td>35 分鐘</td>
-                  <td>78%</td>
-                </tr>
-                <tr>
-                  <td>水院</td>
-                  <td>2026-07-15</td>
-                  <td><span class="badge badge-type badge-type--rap">Rap</span></td>
-                  <td>Chivalry</td>
-                  <td>25 分鐘</td>
-                  <td>60%</td>
-                </tr>
-              </tbody>
-            </table>
-          </div>
-        </div>
-
-      </main>
-    </div>
-  </div>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/admin/practices/create.html b/sechskies-admin-hw/admin/practices/create.html
deleted file mode 100644
index 03bcc1b..0000000
--- a/sechskies-admin-hw/admin/practices/create.html
+++ /dev/null
@@ -1,119 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>新增練習紀錄｜水晶練習室 Admin</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand navbar-dark sk-navbar">
-    <div class="container-fluid">
-      <span class="navbar-brand mb-0"><i class="bi bi-gem me-1"></i>水晶練習室 <span class="fw-light">Admin</span></span>
-      <div class="d-flex gap-2">
-        <a class="btn btn-brand btn-sm" href="../../index.html">回前台</a>
-        <a class="btn btn-outline-brand btn-sm" href="../../index.html">登出</a>
-      </div>
-    </div>
-  </nav>
-
-  <div class="container-fluid">
-    <div class="row">
-
-      <aside class="col-lg-2 border-end sk-admin-sidebar py-4 px-3 min-vh-100">
-        <nav class="nav flex-column">
-          <a class="nav-link" href="../index.html"><i class="bi bi-speedometer2 me-2"></i>後台首頁</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-people me-2"></i>練習生管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-mortarboard me-2"></i>課程管理</a>
-          <a class="nav-link active" href="index.html"><i class="bi bi-journal-text me-2"></i>練習紀錄管理</a>
-          <a class="nav-link" href="../songs/index.html"><i class="bi bi-music-note-list me-2"></i>歌曲資料管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-list-task me-2"></i>訓練任務管理</a>
-        </nav>
-      </aside>
-
-      <main class="col-lg-10 py-4 px-4">
-        <h1 class="h3 mb-4 text-white">新增練習紀錄</h1>
-
-        <div class="card sk-card sk-surface p-4" style="max-width: 42rem;">
-          <form>
-            <div class="row g-3">
-
-              <div class="col-md-6">
-                <label for="traineeName" class="form-label">練習生</label>
-                <select class="form-select" id="traineeName">
-                  <option>努比</option>
-                  <option>昇材</option>
-                  <option>宰鎮</option>
-                  <option>水院</option>
-                </select>
-              </div>
-
-              <div class="col-md-6">
-                <label for="practiceDate" class="form-label">日期</label>
-                <input type="date" class="form-control" id="practiceDate">
-              </div>
-
-              <div class="col-md-6">
-                <label for="practiceType" class="form-label">訓練類型</label>
-                <select class="form-select" id="practiceType">
-                  <option>vocal</option>
-                  <option>舞蹈</option>
-                  <option>Rap</option>
-                  <option>舞台表現</option>
-                  <option>體能</option>
-                </select>
-              </div>
-
-              <div class="col-md-6">
-                <label for="practiceSong" class="form-label">歌曲</label>
-                <select class="form-select" id="practiceSong">
-                  <option>Couple</option>
-                  <option>Road Fighter</option>
-                  <option>Com' Back</option>
-                  <option>Chivalry</option>
-                  <option>The Way This Guy Lives</option>
-                </select>
-              </div>
-
-              <div class="col-md-6">
-                <label for="practiceMinutes" class="form-label">練習時間（分鐘）</label>
-                <input type="number" class="form-control" id="practiceMinutes" placeholder="例如：40">
-              </div>
-
-              <div class="col-md-6">
-                <label for="practiceStatus" class="form-label">完成狀態</label>
-                <select class="form-select" id="practiceStatus">
-                  <option>未開始</option>
-                  <option>進行中</option>
-                  <option>已完成</option>
-                </select>
-              </div>
-
-              <div class="col-12">
-                <label for="practiceCompletion" class="form-label d-flex justify-content-between">
-                  <span>完成度</span>
-                  <span class="text-body-secondary" id="completionValue">50%</span>
-                </label>
-                <input type="range" class="form-range" id="practiceCompletion" min="0" max="100" value="50"
-                       oninput="document.getElementById('completionValue').textContent = this.value + '%'">
-              </div>
-
-            </div>
-
-            <div class="d-flex gap-2 mt-4">
-              <button type="submit" class="btn btn-brand">儲存</button>
-              <a class="btn btn-outline-brand" href="index.html">取消</a>
-            </div>
-          </form>
-        </div>
-
-      </main>
-    </div>
-  </div>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/admin/practices/delete.html b/sechskies-admin-hw/admin/practices/delete.html
deleted file mode 100644
index bdee786..0000000
--- a/sechskies-admin-hw/admin/practices/delete.html
+++ /dev/null
@@ -1,68 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>刪除練習紀錄｜水晶練習室 Admin</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand navbar-dark sk-navbar">
-    <div class="container-fluid">
-      <span class="navbar-brand mb-0"><i class="bi bi-gem me-1"></i>水晶練習室 <span class="fw-light">Admin</span></span>
-      <div class="d-flex gap-2">
-        <a class="btn btn-brand btn-sm" href="../../index.html">回前台</a>
-        <a class="btn btn-outline-brand btn-sm" href="../../index.html">登出</a>
-      </div>
-    </div>
-  </nav>
-
-  <div class="container-fluid">
-    <div class="row">
-
-      <aside class="col-lg-2 border-end sk-admin-sidebar py-4 px-3 min-vh-100">
-        <nav class="nav flex-column">
-          <a class="nav-link" href="../index.html"><i class="bi bi-speedometer2 me-2"></i>後台首頁</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-people me-2"></i>練習生管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-mortarboard me-2"></i>課程管理</a>
-          <a class="nav-link active" href="index.html"><i class="bi bi-journal-text me-2"></i>練習紀錄管理</a>
-          <a class="nav-link" href="../songs/index.html"><i class="bi bi-music-note-list me-2"></i>歌曲資料管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-list-task me-2"></i>訓練任務管理</a>
-        </nav>
-      </aside>
-
-      <main class="col-lg-10 py-4 px-4">
-        <h1 class="h3 mb-4 text-white">刪除練習紀錄</h1>
-
-        <div class="card sk-card sk-surface p-4" style="max-width: 32rem;">
-          <div class="alert alert-danger mb-4" role="alert">
-            <i class="bi bi-exclamation-triangle-fill me-1"></i>確定要刪除這筆練習紀錄嗎？此動作無法復原。
-          </div>
-
-          <dl class="row mb-4">
-            <dt class="col-4 text-body-secondary">練習生</dt>
-            <dd class="col-8">努比</dd>
-            <dt class="col-4 text-body-secondary">日期</dt>
-            <dd class="col-8">2026-07-16</dd>
-            <dt class="col-4 text-body-secondary">訓練類型</dt>
-            <dd class="col-8">舞蹈</dd>
-            <dt class="col-4 text-body-secondary">歌曲</dt>
-            <dd class="col-8">Road Fighter</dd>
-          </dl>
-
-          <div class="d-flex gap-2">
-            <button type="button" class="btn btn-danger">確認刪除</button>
-            <a class="btn btn-outline-brand" href="index.html">取消</a>
-          </div>
-        </div>
-
-      </main>
-    </div>
-  </div>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/admin/practices/edit.html b/sechskies-admin-hw/admin/practices/edit.html
deleted file mode 100644
index c94e125..0000000
--- a/sechskies-admin-hw/admin/practices/edit.html
+++ /dev/null
@@ -1,119 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>編輯練習紀錄｜水晶練習室 Admin</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand navbar-dark sk-navbar">
-    <div class="container-fluid">
-      <span class="navbar-brand mb-0"><i class="bi bi-gem me-1"></i>水晶練習室 <span class="fw-light">Admin</span></span>
-      <div class="d-flex gap-2">
-        <a class="btn btn-brand btn-sm" href="../../index.html">回前台</a>
-        <a class="btn btn-outline-brand btn-sm" href="../../index.html">登出</a>
-      </div>
-    </div>
-  </nav>
-
-  <div class="container-fluid">
-    <div class="row">
-
-      <aside class="col-lg-2 border-end sk-admin-sidebar py-4 px-3 min-vh-100">
-        <nav class="nav flex-column">
-          <a class="nav-link" href="../index.html"><i class="bi bi-speedometer2 me-2"></i>後台首頁</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-people me-2"></i>練習生管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-mortarboard me-2"></i>課程管理</a>
-          <a class="nav-link active" href="index.html"><i class="bi bi-journal-text me-2"></i>練習紀錄管理</a>
-          <a class="nav-link" href="../songs/index.html"><i class="bi bi-music-note-list me-2"></i>歌曲資料管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-list-task me-2"></i>訓練任務管理</a>
-        </nav>
-      </aside>
-
-      <main class="col-lg-10 py-4 px-4">
-        <h1 class="h3 mb-4 text-white">編輯練習紀錄</h1>
-
-        <div class="card sk-card sk-surface p-4" style="max-width: 42rem;">
-          <form>
-            <div class="row g-3">
-
-              <div class="col-md-6">
-                <label for="traineeName" class="form-label">練習生</label>
-                <select class="form-select" id="traineeName">
-                  <option selected>努比</option>
-                  <option>昇材</option>
-                  <option>宰鎮</option>
-                  <option>水院</option>
-                </select>
-              </div>
-
-              <div class="col-md-6">
-                <label for="practiceDate" class="form-label">日期</label>
-                <input type="date" class="form-control" id="practiceDate" value="2026-07-16">
-              </div>
-
-              <div class="col-md-6">
-                <label for="practiceType" class="form-label">訓練類型</label>
-                <select class="form-select" id="practiceType">
-                  <option>vocal</option>
-                  <option selected>舞蹈</option>
-                  <option>Rap</option>
-                  <option>舞台表現</option>
-                  <option>體能</option>
-                </select>
-              </div>
-
-              <div class="col-md-6">
-                <label for="practiceSong" class="form-label">歌曲</label>
-                <select class="form-select" id="practiceSong">
-                  <option>Couple</option>
-                  <option selected>Road Fighter</option>
-                  <option>Com' Back</option>
-                  <option>Chivalry</option>
-                  <option>The Way This Guy Lives</option>
-                </select>
-              </div>
-
-              <div class="col-md-6">
-                <label for="practiceMinutes" class="form-label">練習時間（分鐘）</label>
-                <input type="number" class="form-control" id="practiceMinutes" value="40">
-              </div>
-
-              <div class="col-md-6">
-                <label for="practiceStatus" class="form-label">完成狀態</label>
-                <select class="form-select" id="practiceStatus">
-                  <option>未開始</option>
-                  <option>進行中</option>
-                  <option selected>已完成</option>
-                </select>
-              </div>
-
-              <div class="col-12">
-                <label for="practiceCompletion" class="form-label d-flex justify-content-between">
-                  <span>完成度</span>
-                  <span class="text-body-secondary" id="completionValue">85%</span>
-                </label>
-                <input type="range" class="form-range" id="practiceCompletion" min="0" max="100" value="85"
-                       oninput="document.getElementById('completionValue').textContent = this.value + '%'">
-              </div>
-
-            </div>
-
-            <div class="d-flex gap-2 mt-4">
-              <button type="submit" class="btn btn-brand">儲存變更</button>
-              <a class="btn btn-outline-brand" href="index.html">取消</a>
-            </div>
-          </form>
-        </div>
-
-      </main>
-    </div>
-  </div>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/admin/practices/index.html b/sechskies-admin-hw/admin/practices/index.html
deleted file mode 100644
index b76c5b9..0000000
--- a/sechskies-admin-hw/admin/practices/index.html
+++ /dev/null
@@ -1,125 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>練習紀錄管理｜水晶練習室 Admin</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand navbar-dark sk-navbar">
-    <div class="container-fluid">
-      <span class="navbar-brand mb-0"><i class="bi bi-gem me-1"></i>水晶練習室 <span class="fw-light">Admin</span></span>
-      <div class="d-flex gap-2">
-        <a class="btn btn-brand btn-sm" href="../../index.html">回前台</a>
-        <a class="btn btn-outline-brand btn-sm" href="../../index.html">登出</a>
-      </div>
-    </div>
-  </nav>
-
-  <div class="container-fluid">
-    <div class="row">
-
-      <aside class="col-lg-2 border-end sk-admin-sidebar py-4 px-3 min-vh-100">
-        <nav class="nav flex-column">
-          <a class="nav-link" href="../index.html"><i class="bi bi-speedometer2 me-2"></i>後台首頁</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-people me-2"></i>練習生管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-mortarboard me-2"></i>課程管理</a>
-          <a class="nav-link active" href="index.html"><i class="bi bi-journal-text me-2"></i>練習紀錄管理</a>
-          <a class="nav-link" href="../songs/index.html"><i class="bi bi-music-note-list me-2"></i>歌曲資料管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-list-task me-2"></i>訓練任務管理</a>
-        </nav>
-      </aside>
-
-      <main class="col-lg-10 py-4 px-4">
-        <div class="d-flex flex-wrap justify-content-between align-items-center gap-2 mb-4">
-          <h1 class="h3 mb-0 text-white">練習紀錄管理</h1>
-          <div class="d-flex gap-2">
-            <a class="btn btn-brand" href="create.html"><i class="bi bi-plus-lg me-1"></i>新增練習紀錄</a>
-            <a class="btn btn-outline-brand" href="../index.html">回後台首頁</a>
-          </div>
-        </div>
-
-        <div class="card sk-card sk-surface">
-          <div class="table-responsive">
-            <table class="table table-hover mb-0">
-              <thead>
-                <tr>
-                  <th>練習生</th>
-                  <th>日期</th>
-                  <th>訓練類型</th>
-                  <th>歌曲</th>
-                  <th>練習時間</th>
-                  <th>完成度</th>
-                  <th>完成狀態</th>
-                  <th class="text-end">操作</th>
-                </tr>
-              </thead>
-              <tbody>
-                <tr>
-                  <td>努比</td>
-                  <td>2026-07-16</td>
-                  <td><span class="badge badge-type badge-type--dance">舞蹈</span></td>
-                  <td>Road Fighter</td>
-                  <td>40 分鐘</td>
-                  <td>85%</td>
-                  <td><span class="badge badge-status badge-status--done">已完成</span></td>
-                  <td class="text-end">
-                    <a class="btn btn-sm btn-outline-brand" href="edit.html">編輯</a>
-                    <a class="btn btn-sm btn-outline-danger" href="delete.html">刪除</a>
-                  </td>
-                </tr>
-                <tr>
-                  <td>昇材</td>
-                  <td>2026-07-16</td>
-                  <td><span class="badge badge-type badge-type--vocal">vocal</span></td>
-                  <td>Couple</td>
-                  <td>35 分鐘</td>
-                  <td>78%</td>
-                  <td><span class="badge badge-status badge-status--done">已完成</span></td>
-                  <td class="text-end">
-                    <a class="btn btn-sm btn-outline-brand" href="edit.html">編輯</a>
-                    <a class="btn btn-sm btn-outline-danger" href="delete.html">刪除</a>
-                  </td>
-                </tr>
-                <tr>
-                  <td>宰鎮</td>
-                  <td>2026-07-15</td>
-                  <td><span class="badge badge-type badge-type--rap">Rap</span></td>
-                  <td>Chivalry</td>
-                  <td>25 分鐘</td>
-                  <td>60%</td>
-                  <td><span class="badge badge-status badge-status--progress">進行中</span></td>
-                  <td class="text-end">
-                    <a class="btn btn-sm btn-outline-brand" href="edit.html">編輯</a>
-                    <a class="btn btn-sm btn-outline-danger" href="delete.html">刪除</a>
-                  </td>
-                </tr>
-                <tr>
-                  <td>水院</td>
-                  <td>2026-07-14</td>
-                  <td><span class="badge badge-type badge-type--stage">舞台表現</span></td>
-                  <td>Com' Back</td>
-                  <td>50 分鐘</td>
-                  <td>0%</td>
-                  <td><span class="badge badge-status badge-status--pending">未開始</span></td>
-                  <td class="text-end">
-                    <a class="btn btn-sm btn-outline-brand" href="edit.html">編輯</a>
-                    <a class="btn btn-sm btn-outline-danger" href="delete.html">刪除</a>
-                  </td>
-                </tr>
-              </tbody>
-            </table>
-          </div>
-        </div>
-
-      </main>
-    </div>
-  </div>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/admin/songs/create.html b/sechskies-admin-hw/admin/songs/create.html
deleted file mode 100644
index f8d0c11..0000000
--- a/sechskies-admin-hw/admin/songs/create.html
+++ /dev/null
@@ -1,96 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>新增歌曲｜水晶練習室 Admin</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand navbar-dark sk-navbar">
-    <div class="container-fluid">
-      <span class="navbar-brand mb-0"><i class="bi bi-gem me-1"></i>水晶練習室 <span class="fw-light">Admin</span></span>
-      <div class="d-flex gap-2">
-        <a class="btn btn-brand btn-sm" href="../../index.html">回前台</a>
-        <a class="btn btn-outline-brand btn-sm" href="../../index.html">登出</a>
-      </div>
-    </div>
-  </nav>
-
-  <div class="container-fluid">
-    <div class="row">
-
-      <aside class="col-lg-2 border-end sk-admin-sidebar py-4 px-3 min-vh-100">
-        <nav class="nav flex-column">
-          <a class="nav-link" href="../index.html"><i class="bi bi-speedometer2 me-2"></i>後台首頁</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-people me-2"></i>練習生管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-mortarboard me-2"></i>課程管理</a>
-          <a class="nav-link" href="../practices/index.html"><i class="bi bi-journal-text me-2"></i>練習紀錄管理</a>
-          <a class="nav-link active" href="index.html"><i class="bi bi-music-note-list me-2"></i>歌曲資料管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-list-task me-2"></i>訓練任務管理</a>
-        </nav>
-      </aside>
-
-      <main class="col-lg-10 py-4 px-4">
-        <h1 class="h3 mb-4 text-white">新增歌曲</h1>
-
-        <div class="card sk-card sk-surface p-4">
-          <form>
-            <div class="row g-3">
-
-              <div class="col-md-6">
-                <label for="songName" class="form-label">歌名</label>
-                <input type="text" class="form-control" id="songName" placeholder="例如：Couple">
-              </div>
-
-              <div class="col-md-6">
-                <label for="songAlbum" class="form-label">專輯</label>
-                <input type="text" class="form-control" id="songAlbum" placeholder="例如：Come Back Again">
-              </div>
-
-              <div class="col-md-6">
-                <label for="songYear" class="form-label">發行年份</label>
-                <input type="number" class="form-control" id="songYear" placeholder="例如：1997">
-              </div>
-
-              <div class="col-md-6">
-                <label for="songYoutube" class="form-label">YouTube 連結</label>
-                <input type="url" class="form-control" id="songYoutube" placeholder="https://www.youtube.com/...">
-              </div>
-
-              <div class="col-md-6">
-                <label for="songDifficulty" class="form-label">舞蹈難度</label>
-                <select class="form-select" id="songDifficulty">
-                  <option>低</option>
-                  <option>中等</option>
-                  <option>高</option>
-                </select>
-              </div>
-
-              <div class="col-md-6">
-                <label class="form-label d-block">是否顯示</label>
-                <div class="form-check form-switch mt-2">
-                  <input class="form-check-input" type="checkbox" role="switch" id="songVisible" checked>
-                  <label class="form-check-label" for="songVisible">於前台顯示</label>
-                </div>
-              </div>
-
-            </div>
-
-            <div class="d-flex gap-2 mt-4">
-              <button type="submit" class="btn btn-brand">儲存</button>
-              <a class="btn btn-outline-brand" href="index.html">取消</a>
-            </div>
-          </form>
-        </div>
-
-      </main>
-    </div>
-  </div>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/admin/songs/delete.html b/sechskies-admin-hw/admin/songs/delete.html
deleted file mode 100644
index 3440d66..0000000
--- a/sechskies-admin-hw/admin/songs/delete.html
+++ /dev/null
@@ -1,68 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>刪除歌曲｜水晶練習室 Admin</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand navbar-dark sk-navbar">
-    <div class="container-fluid">
-      <span class="navbar-brand mb-0"><i class="bi bi-gem me-1"></i>水晶練習室 <span class="fw-light">Admin</span></span>
-      <div class="d-flex gap-2">
-        <a class="btn btn-brand btn-sm" href="../../index.html">回前台</a>
-        <a class="btn btn-outline-brand btn-sm" href="../../index.html">登出</a>
-      </div>
-    </div>
-  </nav>
-
-  <div class="container-fluid">
-    <div class="row">
-
-      <aside class="col-lg-2 border-end sk-admin-sidebar py-4 px-3 min-vh-100">
-        <nav class="nav flex-column">
-          <a class="nav-link" href="../index.html"><i class="bi bi-speedometer2 me-2"></i>後台首頁</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-people me-2"></i>練習生管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-mortarboard me-2"></i>課程管理</a>
-          <a class="nav-link" href="../practices/index.html"><i class="bi bi-journal-text me-2"></i>練習紀錄管理</a>
-          <a class="nav-link active" href="index.html"><i class="bi bi-music-note-list me-2"></i>歌曲資料管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-list-task me-2"></i>訓練任務管理</a>
-        </nav>
-      </aside>
-
-      <main class="col-lg-10 py-4 px-4">
-        <h1 class="h3 mb-4 text-white">刪除歌曲</h1>
-
-        <div class="card sk-card sk-surface p-4" style="max-width: 32rem;">
-          <div class="alert alert-danger mb-4" role="alert">
-            <i class="bi bi-exclamation-triangle-fill me-1"></i>確定要刪除這首歌曲嗎？此動作無法復原。
-          </div>
-
-          <dl class="row mb-4">
-            <dt class="col-4 text-body-secondary">編號</dt>
-            <dd class="col-8">1</dd>
-            <dt class="col-4 text-body-secondary">歌名</dt>
-            <dd class="col-8">Couple</dd>
-            <dt class="col-4 text-body-secondary">專輯</dt>
-            <dd class="col-8">Come Back Again</dd>
-            <dt class="col-4 text-body-secondary">發行年份</dt>
-            <dd class="col-8">1997</dd>
-          </dl>
-
-          <div class="d-flex gap-2">
-            <button type="button" class="btn btn-danger">確認刪除</button>
-            <a class="btn btn-outline-brand" href="index.html">取消</a>
-          </div>
-        </div>
-
-      </main>
-    </div>
-  </div>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/admin/songs/edit.html b/sechskies-admin-hw/admin/songs/edit.html
deleted file mode 100644
index 64f69c6..0000000
--- a/sechskies-admin-hw/admin/songs/edit.html
+++ /dev/null
@@ -1,103 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>編輯歌曲｜水晶練習室 Admin</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand navbar-dark sk-navbar">
-    <div class="container-fluid">
-      <span class="navbar-brand mb-0"><i class="bi bi-gem me-1"></i>水晶練習室 <span class="fw-light">Admin</span></span>
-      <div class="d-flex gap-2">
-        <a class="btn btn-brand btn-sm" href="../../index.html">回前台</a>
-        <a class="btn btn-outline-brand btn-sm" href="../../index.html">登出</a>
-      </div>
-    </div>
-  </nav>
-
-  <div class="container-fluid">
-    <div class="row">
-
-      <aside class="col-lg-2 border-end sk-admin-sidebar py-4 px-3 min-vh-100">
-        <nav class="nav flex-column">
-          <a class="nav-link" href="../index.html"><i class="bi bi-speedometer2 me-2"></i>後台首頁</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-people me-2"></i>練習生管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-mortarboard me-2"></i>課程管理</a>
-          <a class="nav-link" href="../practices/index.html"><i class="bi bi-journal-text me-2"></i>練習紀錄管理</a>
-          <a class="nav-link active" href="index.html"><i class="bi bi-music-note-list me-2"></i>歌曲資料管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-list-task me-2"></i>訓練任務管理</a>
-        </nav>
-      </aside>
-
-      <main class="col-lg-10 py-4 px-4">
-        <h1 class="h3 mb-4 text-white">編輯歌曲</h1>
-
-        <div class="card sk-card sk-surface p-4">
-          <form>
-            <div class="row g-3">
-
-              <div class="col-md-6">
-                <label for="songId" class="form-label">編號</label>
-                <input type="text" class="form-control" id="songId" value="1" disabled>
-              </div>
-
-              <div class="col-md-6"></div>
-
-              <div class="col-md-6">
-                <label for="songName" class="form-label">歌名</label>
-                <input type="text" class="form-control" id="songName" value="Couple">
-              </div>
-
-              <div class="col-md-6">
-                <label for="songAlbum" class="form-label">專輯</label>
-                <input type="text" class="form-control" id="songAlbum" value="Come Back Again">
-              </div>
-
-              <div class="col-md-6">
-                <label for="songYear" class="form-label">發行年份</label>
-                <input type="number" class="form-control" id="songYear" value="1997">
-              </div>
-
-              <div class="col-md-6">
-                <label for="songYoutube" class="form-label">YouTube 連結</label>
-                <input type="url" class="form-control" id="songYoutube" value="https://www.youtube.com/">
-              </div>
-
-              <div class="col-md-6">
-                <label for="songDifficulty" class="form-label">舞蹈難度</label>
-                <select class="form-select" id="songDifficulty">
-                  <option>低</option>
-                  <option selected>中等</option>
-                  <option>高</option>
-                </select>
-              </div>
-
-              <div class="col-md-6">
-                <label class="form-label d-block">是否顯示</label>
-                <div class="form-check form-switch mt-2">
-                  <input class="form-check-input" type="checkbox" role="switch" id="songVisible" checked>
-                  <label class="form-check-label" for="songVisible">於前台顯示</label>
-                </div>
-              </div>
-
-            </div>
-
-            <div class="d-flex gap-2 mt-4">
-              <button type="submit" class="btn btn-brand">儲存變更</button>
-              <a class="btn btn-outline-brand" href="index.html">取消</a>
-            </div>
-          </form>
-        </div>
-
-      </main>
-    </div>
-  </div>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/admin/songs/index.html b/sechskies-admin-hw/admin/songs/index.html
deleted file mode 100644
index 36a38c9..0000000
--- a/sechskies-admin-hw/admin/songs/index.html
+++ /dev/null
@@ -1,112 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>歌曲資料管理｜水晶練習室 Admin</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand navbar-dark sk-navbar">
-    <div class="container-fluid">
-      <span class="navbar-brand mb-0"><i class="bi bi-gem me-1"></i>水晶練習室 <span class="fw-light">Admin</span></span>
-      <div class="d-flex gap-2">
-        <a class="btn btn-brand btn-sm" href="../../index.html">回前台</a>
-        <a class="btn btn-outline-brand btn-sm" href="../../index.html">登出</a>
-      </div>
-    </div>
-  </nav>
-
-  <div class="container-fluid">
-    <div class="row">
-
-      <aside class="col-lg-2 border-end sk-admin-sidebar py-4 px-3 min-vh-100">
-        <nav class="nav flex-column">
-          <a class="nav-link" href="../index.html"><i class="bi bi-speedometer2 me-2"></i>後台首頁</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-people me-2"></i>練習生管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-mortarboard me-2"></i>課程管理</a>
-          <a class="nav-link" href="../practices/index.html"><i class="bi bi-journal-text me-2"></i>練習紀錄管理</a>
-          <a class="nav-link active" href="index.html"><i class="bi bi-music-note-list me-2"></i>歌曲資料管理</a>
-          <a class="nav-link disabled" href="#" aria-disabled="true"><i class="bi bi-list-task me-2"></i>訓練任務管理</a>
-        </nav>
-      </aside>
-
-      <main class="col-lg-10 py-4 px-4">
-        <div class="d-flex justify-content-between align-items-center mb-4">
-          <h1 class="h3 mb-0 text-white">歌曲資料管理</h1>
-          <div class="d-flex gap-2">
-            <a class="btn btn-brand" href="create.html"><i class="bi bi-plus-lg me-1"></i>新增歌曲</a>
-            <a class="btn btn-outline-brand" href="../index.html">回後台首頁</a>
-          </div>
-        </div>
-
-        <div class="card sk-card sk-surface">
-          <div class="table-responsive">
-            <table class="table table-hover align-middle mb-0">
-              <thead>
-                <tr>
-                  <th>編號</th>
-                  <th>歌名</th>
-                  <th>專輯</th>
-                  <th>發行年份</th>
-                  <th>YouTube 連結</th>
-                  <th>舞蹈難度</th>
-                  <th>是否顯示</th>
-                  <th class="text-end">操作</th>
-                </tr>
-              </thead>
-              <tbody>
-                <tr>
-                  <td>1</td>
-                  <td>Couple</td>
-                  <td>Come Back Again</td>
-                  <td>1997</td>
-                  <td><a href="https://www.youtube.com/" target="_blank" rel="noopener">連結</a></td>
-                  <td><span class="badge text-bg-warning">中等</span></td>
-                  <td><span class="badge text-bg-success">顯示</span></td>
-                  <td class="text-end">
-                    <a class="btn btn-sm btn-outline-brand" href="edit.html">編輯</a>
-                    <a class="btn btn-sm btn-outline-danger" href="delete.html">刪除</a>
-                  </td>
-                </tr>
-                <tr>
-                  <td>2</td>
-                  <td>Road Fighter</td>
-                  <td>Road Fighter</td>
-                  <td>2000</td>
-                  <td><a href="https://www.youtube.com/" target="_blank" rel="noopener">連結</a></td>
-                  <td><span class="badge text-bg-danger">高</span></td>
-                  <td><span class="badge text-bg-success">顯示</span></td>
-                  <td class="text-end">
-                    <a class="btn btn-sm btn-outline-brand" href="edit.html">編輯</a>
-                    <a class="btn btn-sm btn-outline-danger" href="delete.html">刪除</a>
-                  </td>
-                </tr>
-                <tr>
-                  <td>3</td>
-                  <td>Couple 재수사</td>
-                  <td>The Story of Kies Part 1</td>
-                  <td>2016</td>
-                  <td><a href="https://www.youtube.com/" target="_blank" rel="noopener">連結</a></td>
-                  <td><span class="badge text-bg-secondary">低</span></td>
-                  <td><span class="badge text-bg-secondary">隱藏</span></td>
-                  <td class="text-end">
-                    <a class="btn btn-sm btn-outline-brand" href="edit.html">編輯</a>
-                    <a class="btn btn-sm btn-outline-danger" href="delete.html">刪除</a>
-                  </td>
-                </tr>
-              </tbody>
-            </table>
-          </div>
-        </div>
-
-      </main>
-    </div>
-  </div>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/css/style.css b/sechskies-admin-hw/css/style.css
deleted file mode 100644
index 8b79aad..0000000
--- a/sechskies-admin-hw/css/style.css
+++ /dev/null
@@ -1,391 +0,0 @@
-@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@100..900&display=swap');
-
-/* ============================================
-   水晶練習室｜偶像練習生訓練管理系統
-   主題：專輯質感 — 黑底 + 銀白金屬漸層（呼應 G1 專輯視覺），
-   重點行動區保留少量烈焰紅點綴
-   ============================================ */
-
-:root {
-  /* ── 環境色（銀白金屬，用於底色／邊框／卡片） ── */
-  --sk-primary: #9aa0a8;
-  --sk-primary-dark: #4b4e54;
-  --sk-secondary: #e4e6ea;
-  --sk-accent: #ffffff;
-  --sk-gradient: linear-gradient(135deg, #3a3c40 0%, #8b8f96 45%, #d6d9dd 75%, #ffffff 100%);
-
-  /* ── 重點色（烈焰紅，僅用於關鍵行動／狀態） ── */
-  --sk-red: #e2102b;
-  --sk-red-dark: #9c0b1e;
-  --sk-red-gradient: linear-gradient(135deg, #ff2d3d 0%, #9c0b1e 100%);
-
-  /* ── 背景色（舞台黑） ── */
-  --sk-bg: #0a0a0a;
-  --sk-bg-raised: #161616;
-
-  /* ── 玻璃卡片面 ── */
-  --sk-surface: rgba(180, 184, 191, 0.06);
-  --sk-surface-soft: rgba(180, 184, 191, 0.12);
-  --sk-border: rgba(180, 184, 191, 0.35);
-
-  /* ── 文字色（銀白，呼應專輯封面） ── */
-  --sk-text: #f1f2f4;
-  --sk-text-muted: #a7abb2;
-}
-
-html,
-body {
-  background-color: var(--sk-bg);
-  color: var(--sk-text);
-}
-
-body {
-  font-family: 'Noto Sans TC', system-ui, sans-serif;
-  line-height: 1.6;
-  position: relative;
-}
-
-a {
-  color: var(--sk-secondary);
-}
-
-.text-body-secondary {
-  color: silver !important;
-}
-
-/* 舞台感光暈：兩顆柔光暈，僅作背景點綴，不搶內容 */
-body::before,
-body::after {
-  content: "";
-  position: fixed;
-  width: 40vw;
-  height: 40vw;
-  border-radius: 50%;
-  filter: blur(80px);
-  opacity: 0.16;
-  z-index: -1;
-  pointer-events: none;
-}
-
-body::before {
-  top: -10vw;
-  left: -10vw;
-  background: var(--sk-primary);
-}
-
-body::after {
-  bottom: -10vw;
-  right: -10vw;
-  background: var(--sk-accent);
-}
-
-/* ============ Navbar（前台／後台共用） ============ */
-.sk-navbar {
-  background-color: var(--sk-bg-raised) !important;
-  border-bottom: 1px solid var(--sk-border);
-  padding-top: 0.75rem;
-  padding-bottom: 0.75rem;
-}
-
-.sk-navbar .navbar-brand,
-.sk-brand-text {
-  background: var(--sk-gradient);
-  -webkit-background-clip: text;
-  background-clip: text;
-  color: transparent;
-  font-weight: 700;
-  letter-spacing: 1px;
-}
-
-.sk-navbar .nav-link {
-  color: var(--sk-text);
-}
-
-.sk-navbar .nav-link:hover,
-.sk-navbar .nav-link.active {
-  color: var(--sk-secondary);
-}
-
-.sk-navbar .nav-link.disabled {
-  color: #5c5f64;
-}
-
-/* ============ 品牌按鈕 ============ */
-.btn-brand {
-  background: var(--sk-red-gradient);
-  border: none;
-  color: #fff;
-  font-weight: 600;
-}
-
-.btn-brand:hover,
-.btn-brand:focus {
-  filter: brightness(1.1);
-  color: #fff;
-}
-
-.btn-outline-brand {
-  color: var(--sk-secondary);
-  border-color: var(--sk-border);
-  background-color: transparent;
-}
-
-.btn-outline-brand:hover {
-  background: var(--sk-red-gradient);
-  border-color: transparent;
-  color: #fff;
-}
-
-/* ============ 主視覺（嵌入影片背景，尺寸依影片比例） ============ */
-.sk-hero {
-  border-bottom: 1px solid var(--sk-border);
-  overflow: hidden;
-}
-
-.sk-hero h1 {
-  color: #fff;
-  letter-spacing: 2px;
-}
-
-.sk-hero .sk-title-bar {
-  width: 60px;
-  height: 3px;
-  background: var(--sk-gradient);
-  margin: 18px auto 0;
-  border-radius: 2px;
-}
-
-.sk-hero-video-frame {
-  position: relative;
-  width: 100%;
-  aspect-ratio: 16 / 9;
-  background: #000;
-}
-
-.sk-hero-video-frame iframe {
-  position: absolute;
-  inset: 0;
-  width: 100%;
-  height: 100%;
-  border: 0;
-  pointer-events: none;
-}
-
-.sk-hero-overlay {
-  position: absolute;
-  inset: 0;
-  background: linear-gradient(180deg, rgba(10, 10, 10, 0.35) 0%, rgba(10, 10, 10, 0.8) 100%);
-}
-
-.sk-hero-content {
-  position: relative;
-  z-index: 2;
-  height: 100%;
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  justify-content: center;
-  padding: 1rem;
-}
-
-/* ============ 區塊標題 ============ */
-.sk-section-title {
-  color: var(--sk-text);
-  font-size: 1.25rem;
-  font-weight: 700;
-  letter-spacing: 1px;
-  margin-bottom: 1.25rem;
-  display: flex;
-  align-items: center;
-  gap: 0.5rem;
-}
-
-.sk-section-title i {
-  color: var(--sk-accent);
-}
-
-/* ============ 玻璃卡片（練習/統計/表格/表單容器共用） ============ */
-.sk-card,
-.sk-surface {
-  background-color: var(--sk-surface);
-  border: 1px solid var(--sk-border);
-  backdrop-filter: blur(10px);
-  color: var(--sk-text);
-  border-radius: 0.75rem;
-}
-
-.sk-card {
-  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
-}
-
-.sk-card:hover {
-  transform: translateY(-4px);
-  border-color: var(--sk-primary);
-  box-shadow: 0 0.75rem 1.75rem rgba(180, 184, 191, 0.3);
-}
-
-.sk-card .card-title {
-  color: #fff;
-}
-
-.sk-stat-value {
-  font-size: 2rem;
-  font-weight: 700;
-  background: var(--sk-gradient);
-  -webkit-background-clip: text;
-  background-clip: text;
-  color: transparent;
-}
-
-/* ============ 練習生歡迎區 ============ */
-.sk-welcome-icon {
-  width: 3.25rem;
-  height: 3.25rem;
-  border-radius: 50%;
-  background: var(--sk-gradient);
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  font-size: 1.5rem;
-  color: #fff;
-  flex-shrink: 0;
-}
-
-/* ============ 訓練類型徽章（紅／金／黑／米白家族） ============ */
-.badge-type {
-  border-radius: 999px;
-  padding: 0.35em 0.75em;
-  font-weight: 600;
-  border: 1px solid transparent;
-}
-
-.badge-type--vocal   { background: rgba(200, 205, 214, 0.18); color: #dde0e6; border-color: rgba(200, 205, 214, 0.45); }
-.badge-type--dance   { background: rgba(154, 160, 168, 0.18); color: #c9ccd2; border-color: rgba(154, 160, 168, 0.45); }
-.badge-type--rap     { background: rgba(110, 114, 121, 0.30); color: #b7bac0; border-color: rgba(110, 114, 121, 0.55); }
-.badge-type--stage   { background: var(--sk-text); color: #1a1a1a; border-color: var(--sk-text); }
-.badge-type--fitness { background: rgba(150, 154, 161, 0.16); color: #c4c7cd; border-color: rgba(150, 154, 161, 0.4); }
-
-/* ============ 完成狀態徽章 ============ */
-.badge-status {
-  border-radius: 999px;
-  padding: 0.35em 0.75em;
-  font-weight: 600;
-  border: 1px solid transparent;
-}
-
-.badge-status--pending  { background: rgba(150, 154, 161, 0.16); color: var(--sk-text-muted); border-color: rgba(150, 154, 161, 0.35); }
-.badge-status--progress { background: rgba(226, 16, 43, 0.18); color: #ff8a94; border-color: rgba(226, 16, 43, 0.45); }
-.badge-status--done     { background: rgba(52, 211, 153, 0.18); color: #6ee7b7; border-color: rgba(52, 211, 153, 0.45); }
-
-/* ============ Progress（能力進度） ============ */
-.sk-progress {
-  height: 0.6rem;
-  background-color: var(--sk-bg-raised);
-  border: 1px solid var(--sk-border);
-  border-radius: 999px;
-}
-
-.sk-progress .progress-bar {
-  background: var(--sk-gradient);
-}
-
-/* ============ 後台側邊選單 ============ */
-.sk-admin-sidebar {
-  background-color: var(--sk-bg-raised);
-  border-color: var(--sk-border) !important;
-}
-
-.sk-admin-sidebar .nav-link {
-  color: var(--sk-text);
-  border-radius: 0.5rem;
-  margin-bottom: 0.25rem;
-}
-
-.sk-admin-sidebar .nav-link.active {
-  background: var(--sk-gradient);
-  color: #fff;
-  font-weight: 600;
-}
-
-.sk-admin-sidebar .nav-link:not(.active):hover {
-  background-color: var(--sk-surface-soft);
-}
-
-.sk-admin-sidebar .nav-link.disabled {
-  color: #5c5f64;
-}
-
-/* ============ 表格 ============ */
-.sk-surface .table {
-  --bs-table-color: var(--sk-text);
-  --bs-table-bg: transparent;
-  --bs-table-striped-bg: rgba(180, 184, 191, 0.06);
-  --bs-table-hover-bg: rgba(180, 184, 191, 0.1);
-  --bs-table-border-color: var(--sk-border);
-  vertical-align: middle;
-}
-
-.sk-surface .table thead {
-  background-color: var(--sk-surface-soft);
-  color: #fff;
-}
-
-.sk-surface a:not(.btn):not(.nav-link) {
-  color: var(--sk-secondary);
-}
-
-/* ============ 表單元件（暗色輸入框） ============ */
-.form-control,
-.form-select {
-  background-color: var(--sk-bg-raised);
-  border: 1px solid var(--sk-border);
-  color: var(--sk-text);
-}
-
-.form-control:focus,
-.form-select:focus {
-  background-color: var(--sk-bg-raised);
-  border-color: var(--sk-primary);
-  color: var(--sk-text);
-  box-shadow: 0 0 0 0.25rem rgba(180, 184, 191, 0.25);
-}
-
-.form-control::placeholder {
-  color: #6c7076;
-}
-
-.form-control:disabled {
-  background-color: var(--sk-bg-raised);
-  color: var(--sk-text-muted);
-  opacity: 0.7;
-}
-
-.form-label {
-  color: var(--sk-text-muted);
-  font-weight: 500;
-}
-
-.form-check-input {
-  background-color: var(--sk-bg-raised);
-  border-color: var(--sk-border);
-}
-
-.form-check-input:checked {
-  background-color: var(--sk-primary);
-  border-color: var(--sk-primary);
-}
-
-.form-range::-webkit-slider-thumb {
-  background: var(--sk-primary);
-}
-
-.form-range::-moz-range-thumb {
-  background: var(--sk-primary);
-}
-
-/* ============ Footer ============ */
-.sk-footer {
-  background-color: var(--sk-bg-raised);
-  color: var(--sk-text-muted);
-  border-top: 1px solid var(--sk-border);
-}
diff --git a/sechskies-admin-hw/index.html b/sechskies-admin-hw/index.html
deleted file mode 100644
index acced70..0000000
--- a/sechskies-admin-hw/index.html
+++ /dev/null
@@ -1,225 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>全能Leader</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <!-- 上方導覽列 -->
-  <nav class="navbar navbar-expand-lg navbar-dark sk-navbar sticky-top">
-    <div class="container">
-      <a class="navbar-brand" href="index.html"><i class="bi bi-gem me-1"></i>全能Leader練習室</a>
-      <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#mainNav">
-        <span class="navbar-toggler-icon"></span>
-      </button>
-      <div class="collapse navbar-collapse" id="mainNav">
-        <ul class="navbar-nav ms-auto align-items-lg-center gap-lg-1">
-          <!-- <li class="nav-item"><a class="nav-link active" href="index.html">練習室首頁</a></li> -->
-          <li class="nav-item"><a class="nav-link" href="#today">今日訓練</a></li>
-          <li class="nav-item"><a class="nav-link" href="practice/index.html">我的練習紀錄</a></li>
-          <li class="nav-item"><a class="nav-link disabled" href="#" aria-disabled="true">課程庫</a></li>
-          <li class="nav-item"><a class="nav-link" href="#progress">個人進度</a></li>
-          <li class="nav-item ms-lg-2">
-            <a class="btn btn-brand btn-sm" href="admin/index.html">後台管理</a>
-          </li>
-        </ul>
-      </div>
-    </div>
-  </nav>
-
-  <!-- 主視覺（嵌入影片背景） -->
-  <header class="sk-hero">
-    <div class="sk-hero-video-frame">
-      <iframe
-        src="https://www.youtube.com/embed/ARi0cfpv6mE?autoplay=1&mute=1&loop=1&playlist=ARi0cfpv6mE&controls=0&modestbranding=1&rel=0&showinfo=0"
-        title="水晶練習室主視覺影片"
-        allow="autoplay; encrypted-media"
-        loading="lazy"></iframe>
-      <div class="sk-hero-overlay"></div>
-      <div class="sk-hero-content container text-center">
-        <h1 class="display-4 fw-bold mb-0">偶像練習生</h1>
-        <div class="sk-title-bar"></div>
-        <p class="lead mb-0 mt-4 text-body-secondary">全能Leader 殷志源打造全新綜藝</p>
-      </div>
-    </div>
-  </header>
-
-  <main class="container py-5">
-
-    <!-- 練習生歡迎區 -->
-    <section class="mb-5">
-      <div class="card sk-card p-4">
-        <div class="d-flex flex-wrap align-items-center gap-3">
-          <div class="sk-welcome-icon"><i class="bi bi-person-video3"></i></div>
-          <div class="me-auto">
-            <div class="fs-5 fw-bold text-white">練習生：努比</div>
-            <span class="badge badge-status badge-status--progress"><i class="bi bi-record-circle me-1"></i>今日狀態：訓練中</span>
-          </div>
-          <div class="d-flex gap-4 text-center">
-            <div>
-              <div class="sk-stat-value fs-3">4</div>
-              <div class="small text-body-secondary">本週完成練習（次）</div>
-            </div>
-            <div>
-              <div class="sk-stat-value fs-3">3</div>
-              <div class="small text-body-secondary">連續練習（天）</div>
-            </div>
-          </div>
-        </div>
-      </div>
-    </section>
-
-    <!-- 今日訓練任務 -->
-    <section class="mb-5" id="today">
-      <h2 class="sk-section-title"><i class="bi bi-list-task"></i>今日訓練任務</h2>
-
-      <div class="row g-4">
-        <div class="col-md-4">
-          <div class="card sk-card h-100 p-4">
-            <div class="d-flex align-items-center gap-2 mb-3">
-              <i class="bi bi-mic-fill fs-4 text-white"></i>
-              <span class="badge badge-type badge-type--vocal">vocal</span>
-            </div>
-            <h3 class="h5 text-white">完成一首歌曲錄唱</h3>
-            <p class="text-body-secondary small mb-3"><i class="bi bi-clock me-1"></i>預計時間：30 分鐘</p>
-            <span class="badge badge-status badge-status--pending mb-3 align-self-start">未開始</span>
-            <a class="btn btn-brand mt-auto" href="practice/create.html">開始練習</a>
-          </div>
-        </div>
-
-        <div class="col-md-4">
-          <div class="card sk-card h-100 p-4">
-            <div class="d-flex align-items-center gap-2 mb-3">
-              <i class="bi bi-person-arms-up fs-4 text-white"></i>
-              <span class="badge badge-type badge-type--dance">舞蹈</span>
-            </div>
-            <h3 class="h5 text-white">練習一段K-POP舞蹈</h3>
-            <p class="text-body-secondary small mb-3"><i class="bi bi-clock me-1"></i>預計時間：45 分鐘</p>
-            <span class="badge badge-status badge-status--progress mb-3 align-self-start">進行中</span>
-            <a class="btn btn-brand mt-auto" href="practice/create.html">開始練習</a>
-          </div>
-        </div>
-
-        <div class="col-md-4">
-          <div class="card sk-card h-100 p-4">
-            <div class="d-flex align-items-center gap-2 mb-3">
-              <i class="bi bi-soundwave fs-4 text-white"></i>
-              <span class="badge badge-type badge-type--rap">Rap</span>
-            </div>
-            <h3 class="h5 text-white">完成節奏與咬字訓練</h3>
-            <p class="text-body-secondary small mb-3"><i class="bi bi-clock me-1"></i>預計時間：20 分鐘</p>
-            <span class="badge badge-status badge-status--done mb-3 align-self-start">已完成</span>
-            <a class="btn btn-outline-brand mt-auto" href="practice/create.html">再次練習</a>
-          </div>
-        </div>
-      </div>
-    </section>
-
-    <!-- 能力進度 -->
-    <section class="mb-5" id="progress">
-      <h2 class="sk-section-title"><i class="bi bi-graph-up-arrow"></i>能力進度</h2>
-
-      <div class="card sk-card p-4">
-        <div class="row g-4">
-          <div class="col-md-6">
-            <div class="d-flex justify-content-between small mb-1">
-              <span><i class="bi bi-mic-fill me-1"></i>vocal</span>
-              <span class="text-body-secondary">99%</span>
-            </div>
-            <div class="progress sk-progress">
-              <div class="progress-bar" style="width: 99%" role="progressbar" aria-valuenow="99" aria-valuemin="0" aria-valuemax="100"></div>
-            </div>
-          </div>
-          <div class="col-md-6">
-            <div class="d-flex justify-content-between small mb-1">
-              <span><i class="bi bi-person-arms-up me-1"></i>舞蹈</span>
-              <span class="text-body-secondary">85%</span>
-            </div>
-            <div class="progress sk-progress">
-              <div class="progress-bar" style="width: 85%" role="progressbar" aria-valuenow="85" aria-valuemin="0" aria-valuemax="100"></div>
-            </div>
-          </div>
-          <div class="col-md-6">
-            <div class="d-flex justify-content-between small mb-1">
-              <span><i class="bi bi-soundwave me-1"></i>Rap</span>
-              <span class="text-body-secondary">66%</span>
-            </div>
-            <div class="progress sk-progress">
-              <div class="progress-bar" style="width: 66%" role="progressbar" aria-valuenow="66" aria-valuemin="0" aria-valuemax="100"></div>
-            </div>
-          </div>
-          <div class="col-md-6">
-            <div class="d-flex justify-content-between small mb-1">
-              <span><i class="bi bi-stars me-1"></i>舞台表現</span>
-              <span class="text-body-secondary">80%</span>
-            </div>
-            <div class="progress sk-progress">
-              <div class="progress-bar" style="width: 80%" role="progressbar" aria-valuenow="80" aria-valuemin="0" aria-valuemax="100"></div>
-            </div>
-          </div>
-        </div>
-      </div>
-    </section>
-
-    <!-- 最近練習紀錄 -->
-    <section>
-      <h2 class="sk-section-title"><i class="bi bi-journal-text"></i>最近練習紀錄</h2>
-
-      <div class="card sk-card sk-surface">
-        <div class="table-responsive">
-          <table class="table table-hover mb-0">
-            <thead>
-              <tr>
-                <th>日期</th>
-                <th>練習項目</th>
-                <th>歌曲</th>
-                <th>練習時間</th>
-                <th>完成度</th>
-                <th class="text-end">查看紀錄</th>
-              </tr>
-            </thead>
-            <tbody>
-              <tr>
-                <td>2026-07-16</td>
-                <td><span class="badge badge-type badge-type--dance">舞蹈</span></td>
-                <td>Road Fighter</td>
-                <td>40 分鐘</td>
-                <td>85%</td>
-                <td class="text-end"><a class="btn btn-sm btn-outline-brand" href="practice/show.html">查看</a></td>
-              </tr>
-              <tr>
-                <td>2026-07-15</td>
-                <td><span class="badge badge-type badge-type--vocal">vocal</span></td>
-                <td>Couple</td>
-                <td>30 分鐘</td>
-                <td>70%</td>
-                <td class="text-end"><a class="btn btn-sm btn-outline-brand" href="practice/show.html">查看</a></td>
-              </tr>
-              <tr>
-                <td>2026-07-14</td>
-                <td><span class="badge badge-type badge-type--rap">Rap</span></td>
-                <td>Chivalry</td>
-                <td>25 分鐘</td>
-                <td>60%</td>
-                <td class="text-end"><a class="btn btn-sm btn-outline-brand" href="practice/show.html">查看</a></td>
-              </tr>
-            </tbody>
-          </table>
-        </div>
-      </div>
-    </section>
-
-  </main>
-
-  <footer class="sk-footer text-center py-4">
-    <small>&copy; 2026 水晶練習室</small>
-  </footer>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/practice/create.html b/sechskies-admin-hw/practice/create.html
deleted file mode 100644
index 9228e67..0000000
--- a/sechskies-admin-hw/practice/create.html
+++ /dev/null
@@ -1,115 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>新增練習紀錄｜水晶練習室</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand-lg navbar-dark sk-navbar sticky-top">
-    <div class="container">
-      <a class="navbar-brand" href="../index.html"><i class="bi bi-gem me-1"></i>水晶練習室</a>
-      <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#mainNav">
-        <span class="navbar-toggler-icon"></span>
-      </button>
-      <div class="collapse navbar-collapse" id="mainNav">
-        <ul class="navbar-nav ms-auto align-items-lg-center gap-lg-1">
-          <li class="nav-item"><a class="nav-link" href="../index.html">練習室首頁</a></li>
-          <li class="nav-item"><a class="nav-link" href="../index.html#today">今日訓練</a></li>
-          <li class="nav-item"><a class="nav-link active" href="index.html">我的練習紀錄</a></li>
-          <li class="nav-item"><a class="nav-link disabled" href="#" aria-disabled="true">課程庫</a></li>
-          <li class="nav-item"><a class="nav-link" href="../index.html#progress">個人進度</a></li>
-          <li class="nav-item ms-lg-2">
-            <a class="btn btn-brand btn-sm" href="../admin/index.html">後台管理</a>
-          </li>
-        </ul>
-      </div>
-    </div>
-  </nav>
-
-  <main class="container py-5">
-    <h1 class="h3 mb-4 text-white"><i class="bi bi-plus-circle me-2"></i>新增練習紀錄</h1>
-
-    <div class="card sk-card sk-surface p-4" style="max-width: 42rem;">
-      <form>
-        <div class="row g-3">
-
-          <div class="col-md-6">
-            <label for="practiceDate" class="form-label">練習日期</label>
-            <input type="date" class="form-control" id="practiceDate">
-          </div>
-
-          <div class="col-md-6">
-            <label for="practiceType" class="form-label">訓練類型</label>
-            <select class="form-select" id="practiceType">
-              <option>vocal</option>
-              <option>舞蹈</option>
-              <option>Rap</option>
-              <option>舞台表現</option>
-              <option>體能</option>
-            </select>
-          </div>
-
-          <div class="col-md-6">
-            <label for="practiceSong" class="form-label">練習歌曲</label>
-            <select class="form-select" id="practiceSong">
-              <option>Couple</option>
-              <option>Road Fighter</option>
-              <option>Com' Back</option>
-              <option>Chivalry</option>
-              <option>The Way This Guy Lives</option>
-            </select>
-          </div>
-
-          <div class="col-md-6">
-            <label for="practiceMinutes" class="form-label">練習分鐘數</label>
-            <input type="number" class="form-control" id="practiceMinutes" placeholder="例如：30">
-          </div>
-
-          <div class="col-12">
-            <label for="practiceContent" class="form-label">練習內容</label>
-            <textarea class="form-control" id="practiceContent" rows="2" placeholder="例如：副歌走位＋隊形轉換"></textarea>
-          </div>
-
-          <div class="col-12">
-            <label for="practiceCompletion" class="form-label d-flex justify-content-between">
-              <span>今日完成度</span>
-              <span class="text-body-secondary" id="completionValue">50%</span>
-            </label>
-            <input type="range" class="form-range" id="practiceCompletion" min="0" max="100" value="50"
-                   oninput="document.getElementById('completionValue').textContent = this.value + '%'">
-          </div>
-
-          <div class="col-12">
-            <label for="practiceNote" class="form-label">練習心得</label>
-            <textarea class="form-control" id="practiceNote" rows="3" placeholder="今天練習的感想與需要加強的地方"></textarea>
-          </div>
-
-          <div class="col-12">
-            <div class="form-check form-switch">
-              <input class="form-check-input" type="checkbox" role="switch" id="practiceDone">
-              <label class="form-check-label" for="practiceDone">是否完成</label>
-            </div>
-          </div>
-
-        </div>
-
-        <div class="d-flex gap-2 mt-4">
-          <button type="submit" class="btn btn-brand">儲存</button>
-          <a class="btn btn-outline-brand" href="index.html">取消</a>
-        </div>
-      </form>
-    </div>
-  </main>
-
-  <footer class="sk-footer text-center py-4">
-    <small>&copy; 2026 水晶練習室</small>
-  </footer>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/practice/delete.html b/sechskies-admin-hw/practice/delete.html
deleted file mode 100644
index 67f2d68..0000000
--- a/sechskies-admin-hw/practice/delete.html
+++ /dev/null
@@ -1,66 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>刪除練習紀錄｜水晶練習室</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand-lg navbar-dark sk-navbar sticky-top">
-    <div class="container">
-      <a class="navbar-brand" href="../index.html"><i class="bi bi-gem me-1"></i>水晶練習室</a>
-      <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#mainNav">
-        <span class="navbar-toggler-icon"></span>
-      </button>
-      <div class="collapse navbar-collapse" id="mainNav">
-        <ul class="navbar-nav ms-auto align-items-lg-center gap-lg-1">
-          <li class="nav-item"><a class="nav-link" href="../index.html">練習室首頁</a></li>
-          <li class="nav-item"><a class="nav-link" href="../index.html#today">今日訓練</a></li>
-          <li class="nav-item"><a class="nav-link active" href="index.html">我的練習紀錄</a></li>
-          <li class="nav-item"><a class="nav-link disabled" href="#" aria-disabled="true">課程庫</a></li>
-          <li class="nav-item"><a class="nav-link" href="../index.html#progress">個人進度</a></li>
-          <li class="nav-item ms-lg-2">
-            <a class="btn btn-brand btn-sm" href="../admin/index.html">後台管理</a>
-          </li>
-        </ul>
-      </div>
-    </div>
-  </nav>
-
-  <main class="container py-5">
-    <h1 class="h3 mb-4 text-white"><i class="bi bi-trash3 me-2"></i>刪除練習紀錄</h1>
-
-    <div class="card sk-card sk-surface p-4" style="max-width: 32rem;">
-      <div class="alert alert-danger mb-4" role="alert">
-        <i class="bi bi-exclamation-triangle-fill me-1"></i>確定要刪除這筆練習紀錄嗎？此動作無法復原。
-      </div>
-
-      <dl class="row mb-4">
-        <dt class="col-4 text-body-secondary">練習日期</dt>
-        <dd class="col-8">2026-07-16</dd>
-        <dt class="col-4 text-body-secondary">訓練類型</dt>
-        <dd class="col-8">舞蹈</dd>
-        <dt class="col-4 text-body-secondary">練習歌曲</dt>
-        <dd class="col-8">Road Fighter</dd>
-        <dt class="col-4 text-body-secondary">練習時間</dt>
-        <dd class="col-8">40 分鐘</dd>
-      </dl>
-
-      <div class="d-flex gap-2">
-        <button type="button" class="btn btn-danger">確認刪除</button>
-        <a class="btn btn-outline-brand" href="index.html">取消</a>
-      </div>
-    </div>
-  </main>
-
-  <footer class="sk-footer text-center py-4">
-    <small>&copy; 2026 水晶練習室</small>
-  </footer>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/practice/edit.html b/sechskies-admin-hw/practice/edit.html
deleted file mode 100644
index 607b39e..0000000
--- a/sechskies-admin-hw/practice/edit.html
+++ /dev/null
@@ -1,115 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>編輯練習紀錄｜水晶練習室</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand-lg navbar-dark sk-navbar sticky-top">
-    <div class="container">
-      <a class="navbar-brand" href="../index.html"><i class="bi bi-gem me-1"></i>水晶練習室</a>
-      <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#mainNav">
-        <span class="navbar-toggler-icon"></span>
-      </button>
-      <div class="collapse navbar-collapse" id="mainNav">
-        <ul class="navbar-nav ms-auto align-items-lg-center gap-lg-1">
-          <li class="nav-item"><a class="nav-link" href="../index.html">練習室首頁</a></li>
-          <li class="nav-item"><a class="nav-link" href="../index.html#today">今日訓練</a></li>
-          <li class="nav-item"><a class="nav-link active" href="index.html">我的練習紀錄</a></li>
-          <li class="nav-item"><a class="nav-link disabled" href="#" aria-disabled="true">課程庫</a></li>
-          <li class="nav-item"><a class="nav-link" href="../index.html#progress">個人進度</a></li>
-          <li class="nav-item ms-lg-2">
-            <a class="btn btn-brand btn-sm" href="../admin/index.html">後台管理</a>
-          </li>
-        </ul>
-      </div>
-    </div>
-  </nav>
-
-  <main class="container py-5">
-    <h1 class="h3 mb-4 text-white"><i class="bi bi-pencil-square me-2"></i>編輯練習紀錄</h1>
-
-    <div class="card sk-card sk-surface p-4" style="max-width: 42rem;">
-      <form>
-        <div class="row g-3">
-
-          <div class="col-md-6">
-            <label for="practiceDate" class="form-label">練習日期</label>
-            <input type="date" class="form-control" id="practiceDate" value="2026-07-16">
-          </div>
-
-          <div class="col-md-6">
-            <label for="practiceType" class="form-label">訓練類型</label>
-            <select class="form-select" id="practiceType">
-              <option>vocal</option>
-              <option selected>舞蹈</option>
-              <option>Rap</option>
-              <option>舞台表現</option>
-              <option>體能</option>
-            </select>
-          </div>
-
-          <div class="col-md-6">
-            <label for="practiceSong" class="form-label">練習歌曲</label>
-            <select class="form-select" id="practiceSong">
-              <option>Couple</option>
-              <option selected>Road Fighter</option>
-              <option>Com' Back</option>
-              <option>Chivalry</option>
-              <option>The Way This Guy Lives</option>
-            </select>
-          </div>
-
-          <div class="col-md-6">
-            <label for="practiceMinutes" class="form-label">練習分鐘數</label>
-            <input type="number" class="form-control" id="practiceMinutes" value="40">
-          </div>
-
-          <div class="col-12">
-            <label for="practiceContent" class="form-label">練習內容</label>
-            <textarea class="form-control" id="practiceContent" rows="2">整段主歌＋副歌走位</textarea>
-          </div>
-
-          <div class="col-12">
-            <label for="practiceCompletion" class="form-label d-flex justify-content-between">
-              <span>今日完成度</span>
-              <span class="text-body-secondary" id="completionValue">85%</span>
-            </label>
-            <input type="range" class="form-range" id="practiceCompletion" min="0" max="100" value="85"
-                   oninput="document.getElementById('completionValue').textContent = this.value + '%'">
-          </div>
-
-          <div class="col-12">
-            <label for="practiceNote" class="form-label">練習心得</label>
-            <textarea class="form-control" id="practiceNote" rows="3">隊形轉換卡點抓得比昨天準，副歌動作幅度還要再放大。</textarea>
-          </div>
-
-          <div class="col-12">
-            <div class="form-check form-switch">
-              <input class="form-check-input" type="checkbox" role="switch" id="practiceDone" checked>
-              <label class="form-check-label" for="practiceDone">是否完成</label>
-            </div>
-          </div>
-
-        </div>
-
-        <div class="d-flex gap-2 mt-4">
-          <button type="submit" class="btn btn-brand">儲存變更</button>
-          <a class="btn btn-outline-brand" href="index.html">取消</a>
-        </div>
-      </form>
-    </div>
-  </main>
-
-  <footer class="sk-footer text-center py-4">
-    <small>&copy; 2026 水晶練習室</small>
-  </footer>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/practice/index.html b/sechskies-admin-hw/practice/index.html
deleted file mode 100644
index bc9a56a..0000000
--- a/sechskies-admin-hw/practice/index.html
+++ /dev/null
@@ -1,115 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>我的練習紀錄｜水晶練習室</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand-lg navbar-dark sk-navbar sticky-top">
-    <div class="container">
-      <a class="navbar-brand" href="../index.html"><i class="bi bi-gem me-1"></i>水晶練習室</a>
-      <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#mainNav">
-        <span class="navbar-toggler-icon"></span>
-      </button>
-      <div class="collapse navbar-collapse" id="mainNav">
-        <ul class="navbar-nav ms-auto align-items-lg-center gap-lg-1">
-          <li class="nav-item"><a class="nav-link" href="../index.html">練習室首頁</a></li>
-          <li class="nav-item"><a class="nav-link" href="../index.html#today">今日訓練</a></li>
-          <li class="nav-item"><a class="nav-link active" href="index.html">我的練習紀錄</a></li>
-          <li class="nav-item"><a class="nav-link disabled" href="#" aria-disabled="true">課程庫</a></li>
-          <li class="nav-item"><a class="nav-link" href="../index.html#progress">個人進度</a></li>
-          <li class="nav-item ms-lg-2">
-            <a class="btn btn-brand btn-sm" href="../admin/index.html">後台管理</a>
-          </li>
-        </ul>
-      </div>
-    </div>
-  </nav>
-
-  <main class="container py-5">
-
-    <div class="d-flex flex-wrap justify-content-between align-items-center gap-2 mb-4">
-      <h1 class="h3 mb-0 text-white"><i class="bi bi-journal-text me-2"></i>我的練習紀錄</h1>
-      <div class="d-flex gap-2">
-        <a class="btn btn-brand" href="create.html"><i class="bi bi-plus-lg me-1"></i>新增練習紀錄</a>
-        <a class="btn btn-outline-brand" href="../index.html">回練習室首頁</a>
-      </div>
-    </div>
-
-    <div class="card sk-card sk-surface">
-      <div class="table-responsive">
-        <table class="table table-hover mb-0">
-          <thead>
-            <tr>
-              <th>編號</th>
-              <th>練習日期</th>
-              <th>訓練類型</th>
-              <th>練習歌曲</th>
-              <th>練習內容</th>
-              <th>練習時間</th>
-              <th>完成度</th>
-              <th class="text-end">操作</th>
-            </tr>
-          </thead>
-          <tbody>
-            <tr>
-              <td>1</td>
-              <td>2026-07-16</td>
-              <td><span class="badge badge-type badge-type--dance">舞蹈</span></td>
-              <td>Road Fighter</td>
-              <td>整段主歌＋副歌走位</td>
-              <td>40 分鐘</td>
-              <td>85%</td>
-              <td class="text-end">
-                <a class="btn btn-sm btn-outline-brand" href="show.html">查看</a>
-                <a class="btn btn-sm btn-outline-brand" href="edit.html">編輯</a>
-                <a class="btn btn-sm btn-outline-danger" href="delete.html">刪除</a>
-              </td>
-            </tr>
-            <tr>
-              <td>2</td>
-              <td>2026-07-15</td>
-              <td><span class="badge badge-type badge-type--vocal">vocal</span></td>
-              <td>Couple</td>
-              <td>副歌高音音準練習</td>
-              <td>30 分鐘</td>
-              <td>70%</td>
-              <td class="text-end">
-                <a class="btn btn-sm btn-outline-brand" href="show.html">查看</a>
-                <a class="btn btn-sm btn-outline-brand" href="edit.html">編輯</a>
-                <a class="btn btn-sm btn-outline-danger" href="delete.html">刪除</a>
-              </td>
-            </tr>
-            <tr>
-              <td>3</td>
-              <td>2026-07-14</td>
-              <td><span class="badge badge-type badge-type--rap">Rap</span></td>
-              <td>Chivalry</td>
-              <td>咬字與節奏卡點</td>
-              <td>25 分鐘</td>
-              <td>60%</td>
-              <td class="text-end">
-                <a class="btn btn-sm btn-outline-brand" href="show.html">查看</a>
-                <a class="btn btn-sm btn-outline-brand" href="edit.html">編輯</a>
-                <a class="btn btn-sm btn-outline-danger" href="delete.html">刪除</a>
-              </td>
-            </tr>
-          </tbody>
-        </table>
-      </div>
-    </div>
-
-  </main>
-
-  <footer class="sk-footer text-center py-4">
-    <small>&copy; 2026 水晶練習室</small>
-  </footer>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/sechskies-admin-hw/practice/show.html b/sechskies-admin-hw/practice/show.html
deleted file mode 100644
index 634f0a3..0000000
--- a/sechskies-admin-hw/practice/show.html
+++ /dev/null
@@ -1,81 +0,0 @@
-<!doctype html>
-<html lang="zh-Hant">
-<head>
-  <meta charset="UTF-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>練習紀錄詳情｜水晶練習室</title>
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
-  <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.css" rel="stylesheet">
-  <link href="../css/style.css" rel="stylesheet">
-</head>
-<body>
-
-  <nav class="navbar navbar-expand-lg navbar-dark sk-navbar sticky-top">
-    <div class="container">
-      <a class="navbar-brand" href="../index.html"><i class="bi bi-gem me-1"></i>水晶練習室</a>
-      <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#mainNav">
-        <span class="navbar-toggler-icon"></span>
-      </button>
-      <div class="collapse navbar-collapse" id="mainNav">
-        <ul class="navbar-nav ms-auto align-items-lg-center gap-lg-1">
-          <li class="nav-item"><a class="nav-link" href="../index.html">練習室首頁</a></li>
-          <li class="nav-item"><a class="nav-link" href="../index.html#today">今日訓練</a></li>
-          <li class="nav-item"><a class="nav-link active" href="index.html">我的練習紀錄</a></li>
-          <li class="nav-item"><a class="nav-link disabled" href="#" aria-disabled="true">課程庫</a></li>
-          <li class="nav-item"><a class="nav-link" href="../index.html#progress">個人進度</a></li>
-          <li class="nav-item ms-lg-2">
-            <a class="btn btn-brand btn-sm" href="../admin/index.html">後台管理</a>
-          </li>
-        </ul>
-      </div>
-    </div>
-  </nav>
-
-  <main class="container py-5">
-    <h1 class="h3 mb-4 text-white"><i class="bi bi-journal-check me-2"></i>練習紀錄詳情</h1>
-
-    <div class="card sk-card sk-surface p-4" style="max-width: 42rem;">
-
-      <div class="d-flex align-items-center gap-2 mb-4">
-        <span class="badge badge-type badge-type--dance">舞蹈</span>
-        <span class="badge badge-status badge-status--done">已完成</span>
-      </div>
-
-      <dl class="row mb-0">
-        <dt class="col-4 text-body-secondary">練習日期</dt>
-        <dd class="col-8">2026-07-16</dd>
-
-        <dt class="col-4 text-body-secondary">訓練類型</dt>
-        <dd class="col-8">舞蹈</dd>
-
-        <dt class="col-4 text-body-secondary">練習歌曲</dt>
-        <dd class="col-8">Road Fighter</dd>
-
-        <dt class="col-4 text-body-secondary">練習時間</dt>
-        <dd class="col-8">40 分鐘</dd>
-
-        <dt class="col-4 text-body-secondary">完成度</dt>
-        <dd class="col-8">
-          <div class="progress sk-progress" style="max-width: 12rem;">
-            <div class="progress-bar" style="width: 85%" role="progressbar" aria-valuenow="85" aria-valuemin="0" aria-valuemax="100"></div>
-          </div>
-        </dd>
-
-        <dt class="col-4 text-body-secondary">練習心得</dt>
-        <dd class="col-8">隊形轉換卡點抓得比昨天準，副歌動作幅度還要再放大。</dd>
-      </dl>
-
-      <div class="d-flex gap-2 mt-4">
-        <a class="btn btn-brand" href="edit.html">編輯這筆紀錄</a>
-        <a class="btn btn-outline-brand" href="index.html">回練習紀錄列表</a>
-      </div>
-    </div>
-  </main>
-
-  <footer class="sk-footer text-center py-4">
-    <small>&copy; 2026 水晶練習室</small>
-  </footer>
-
-  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
-</body>
-</html>
diff --git a/storage/dance-applications/.gitkeep b/storage/dance-applications/.gitkeep
deleted file mode 100644
index 8b13789..0000000
--- a/storage/dance-applications/.gitkeep
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/yellow-note/crystal-dance-survey.backup-2026-07-09.html b/yellow-note/crystal-dance-survey.backup-2026-07-09.html
deleted file mode 100644
index 459b4ab..0000000
--- a/yellow-note/crystal-dance-survey.backup-2026-07-09.html
+++ /dev/null
@@ -1,724 +0,0 @@
-<!doctype html>
-<html lang="zh-TW">
-
-<head>
-    <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>瘞湔?瑕酋?典誨?剁?瘞湔?梯?蝷?/title>
-    <link rel="stylesheet" href="../assets/css/style.css">
-    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css" rel="stylesheet">
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css">
-    <link rel="stylesheet" href="../assets/css/tablet.css">
-    <style>
-        /* ?€?€ Bootstrap ??敺???靽風嚗? index-bootstrap.html ??嚗?
-           Bootstrap Reboot ?函?璅惜?豢??券?閮?body嚗?憿?畾菔嚗€??嚗?           ?ㄐ?典?????撖怠 Bootstrap 敺??璅惜?豢??函??蝡??祆?潘?
-           銝?韐? .section-title ?? class ?豢??剁?銝蔣?踵?隞見撘??€?€ */
-        body {
-            background-color: var(--color-bg);
-            color: var(--color-text);
-            font-family: 'Noto Sans TC', 'Microsoft JhengHei', system-ui, sans-serif;
-            line-height: 1.6;
-        }
-
-        h1,
-        h2,
-        h3,
-        h4,
-        h5,
-        h6,
-        p,
-        ul,
-        ol,
-        dl,
-        dd,
-        blockquote,
-        hr {
-            margin: 0;
-            padding: 0;
-        }
-
-        a {
-            color: var(--color-text);
-            text-decoration: none;
-        }
-
-        /* 瘞湔?梯?蝷橘?瘞湔?瑕酋?典誨?冽?銝?頩??港??€?           憿銝€敺?朣蝡?color-tokens嚗?-color-brand 蝟餃?嚗?銝?菔??*/
-        :root {
-            --dance-yellow: var(--color-brand);
-            --dance-yellow-light: var(--color-brand-light);
-            --dance-yellow-dark: var(--color-brand-dark);
-            --dance-ink: var(--color-brand-dark);
-        }
-
-        /* 憭扳?摨?嚗???函??蝷曉??閬死嚗??芾????銝??函??梁??header.jpg */
-        body.crystal-dance-page header.inner-page-header {
-            background-image: url('../assets/images/crystal-dance-hero.jpg');
-            background-position: center 68%;
-        }
-
-        /* ?€?€ Hero ?€嚗窒??inner-page-header ?嗡蜓璅??ㄐ?芣撘????批?閬踝? ?€?€ */
-        .crystal-dance-hero {
-            text-align: center;
-        }
-
-        .crystal-dance-hero .category-tag {
-            display: inline-block;
-            background: var(--dance-yellow-light);
-            color: var(--dance-ink);
-            padding: .35rem 1.1rem;
-            border-radius: 999px;
-            font-size: .8rem;
-            font-weight: 700;
-            letter-spacing: 1px;
-            margin-bottom: 1rem;
-        }
-
-        .crystal-dance-hero .hero-desc {
-            color: var(--color-text-muted);
-            line-height: 1.85;
-            max-width: 640px;
-            margin: 0 auto 1.5rem;
-        }
-
-        .crystal-dance-hero .quick-nav {
-            display: flex;
-            flex-wrap: nowrap;
-            overflow-x: auto;
-            justify-content: center;
-            gap: .6rem;
-            padding: .25rem 0 .5rem;
-        }
-
-        .crystal-dance-hero .quick-nav a {
-            white-space: nowrap;
-            text-decoration: none;
-        }
-
-        /* --- ?挾?賢?冽?憿見撘?--- */
-        .section-alt {
-            background: rgba(255, 204, 0, 0.08);
-        }
-
-        .section-kicker {
-            font-weight: 800;
-            color: var(--dance-yellow-dark);
-            letter-spacing: 2px;
-            font-size: .85rem;
-            text-transform: uppercase;
-            margin-bottom: .5rem;
-        }
-
-        .crystal-dance-page .section-title {
-            text-align: left;
-            margin-bottom: 1.1rem;
-        }
-
-        .section-lead {
-            color: var(--color-text-muted);
-            line-height: 1.85;
-            max-width: 760px;
-        }
-
-        .section-lead+.section-lead {
-            margin-top: .9rem;
-        }
-
-        /* --- 瘣餃?銝餉?閬?/ 銵典 Banner --- */
-        .event-banner {
-            background: linear-gradient(135deg, var(--dance-yellow) 0%, var(--dance-yellow-light) 100%);
-            border-radius: 24px;
-            padding: 2.25rem 2.5rem;
-            text-align: center;
-            color: var(--dance-ink);
-            box-shadow: 0 12px 30px rgba(255, 204, 0, .25);
-        }
-
-        .event-banner .event-badge {
-            display: inline-block;
-            background: var(--dance-ink);
-            color: var(--dance-yellow-light);
-            padding: .35rem 1.1rem;
-            border-radius: 999px;
-            font-size: .8rem;
-            font-weight: 700;
-            letter-spacing: 1px;
-            margin-bottom: .9rem;
-        }
-
-        .event-banner h2 {
-            font-weight: 900;
-            letter-spacing: 3px;
-            font-size: 1.9rem;
-            margin-bottom: .6rem;
-        }
-
-        .event-banner p {
-            margin: 0 auto;
-            font-weight: 600;
-            letter-spacing: .5px;
-            max-width: 640px;
-        }
-
-        /* --- ?梯?蝷曆?蝝對??摮?chip --- */
-        .keyword-row {
-            margin-top: 1.5rem;
-        }
-
-        .keyword-chip {
-            background: #fff;
-            border: 1.5px solid var(--dance-yellow);
-            border-radius: 999px;
-            padding: .5rem 1.1rem;
-            font-weight: 700;
-            color: var(--dance-ink);
-            display: inline-flex;
-            align-items: center;
-            gap: .4rem;
-        }
-
-        /* --- 20TH 敶梁??“ --- */
-        .video-card {
-            background: #fff;
-            border: 1.5px solid var(--dance-yellow);
-            border-radius: 16px;
-            padding: 1rem;
-            height: 100%;
-            box-shadow: 0 6px 18px rgba(255, 204, 0, .1);
-        }
-
-        .video-tag {
-            display: inline-block;
-            background: var(--dance-yellow-dark);
-            color: #fff;
-            font-weight: 700;
-            font-size: .75rem;
-            padding: .3rem .8rem;
-            border-radius: 999px;
-            margin-bottom: .75rem;
-        }
-
-        .video-card .ratio {
-            border-radius: 10px;
-            overflow: hidden;
-        }
-
-        /* --- 蝬??€ --- */
-        .song-card {
-            background: #fff;
-            border: 1.5px solid var(--dance-yellow);
-            border-radius: 16px;
-            padding: 1.5rem;
-            height: 100%;
-            box-shadow: 0 6px 18px rgba(255, 204, 0, .1);
-        }
-
-        .song-card h4 {
-            color: var(--dance-yellow-dark);
-            font-weight: 800;
-            margin-bottom: .8rem;
-        }
-
-        .song-card .song-meta {
-            font-size: .78rem;
-            font-weight: 800;
-            color: var(--dance-ink);
-            background: var(--dance-yellow-light);
-            display: inline-block;
-            padding: .15rem .6rem;
-            border-radius: 999px;
-            margin-bottom: .4rem;
-        }
-
-        .song-card p {
-            font-size: .9rem;
-            color: var(--color-text-muted);
-            line-height: 1.7;
-            margin-bottom: .9rem;
-        }
-
-        /* --- 30TH ?隡? --- */
-        .countdown-strip {
-            background: var(--dance-ink);
-            color: var(--dance-yellow-light);
-            border-radius: 16px;
-            padding: .9rem 1.5rem;
-            display: inline-flex;
-            align-items: center;
-            gap: .6rem;
-            font-weight: 800;
-            letter-spacing: 1px;
-            margin-top: 1.5rem;
-        }
-
-        /* --- 30TH ???銵典 --- */
-        .form-intro {
-            background: var(--color-surface-soft);
-            border-left: 4px solid var(--dance-yellow-dark);
-            padding: 1rem 1.25rem;
-            border-radius: 0 12px 12px 0;
-            color: var(--dance-ink);
-            font-weight: 600;
-            margin-bottom: 1.75rem;
-        }
-
-        .form-panel {
-            background: #fff;
-            border: 1.5px solid var(--dance-yellow);
-            border-radius: 20px;
-            padding: 2rem;
-            height: 100%;
-            box-shadow: 0 8px 24px rgba(255, 204, 0, .12);
-        }
-
-        .panel-title {
-            font-weight: 800;
-            color: var(--dance-yellow-dark);
-            margin-bottom: 1.5rem;
-            font-size: 1.3rem;
-        }
-
-        .form-label {
-            font-weight: 700;
-            color: var(--dance-ink);
-        }
-
-        .form-control,
-        .form-select {
-            border: 1.5px solid var(--color-brand-light);
-            border-radius: 12px;
-            padding: .65rem .9rem;
-        }
-
-        .form-control:focus,
-        .form-select:focus {
-            border-color: var(--dance-yellow-dark);
-            box-shadow: 0 0 0 .2rem rgba(255, 204, 0, .25);
-        }
-
-        .form-control[type="file"] {
-            border-style: dashed;
-            cursor: pointer;
-        }
-
-        .form-text {
-            color: var(--color-text-muted);
-        }
-
-        /* 頨思遢 / ?閎隞交??? radio?heckbox ?嚗??身憭??湔餈?撖虫??? */
-        .btn-outline-dance {
-            border: 1.5px solid var(--dance-yellow-dark);
-            color: var(--dance-yellow-dark);
-            border-radius: 999px;
-            font-weight: 600;
-            padding: .4rem 1.15rem;
-        }
-
-        .btn-check:checked+.btn-outline-dance,
-        .btn-outline-dance:hover {
-            background: var(--dance-yellow);
-            color: var(--dance-ink);
-            border-color: var(--dance-yellow-dark);
-        }
-
-        .btn-dance {
-            background: var(--dance-yellow);
-            color: var(--dance-ink);
-            border: 2px solid var(--dance-yellow-dark);
-            border-radius: 999px;
-            font-weight: 800;
-            padding: .75rem;
-        }
-
-        .btn-dance:hover {
-            background: var(--dance-yellow-dark);
-            color: #fff;
-        }
-
-        .btn-reset-dance {
-            background: #fff;
-            color: var(--dance-yellow-dark);
-            border: 2px solid var(--dance-yellow-dark);
-            border-radius: 999px;
-            font-weight: 700;
-            padding: .75rem;
-        }
-
-        .btn-reset-dance:hover {
-            background: #fdecec;
-            border-color: #dc3545;
-            color: #dc3545;
-        }
-
-        /* --- 憛怠神???--- */
-        .info-card {
-            background: linear-gradient(160deg, var(--dance-ink) 0%, var(--color-bg-raised) 100%);
-            color: var(--dance-yellow-light);
-            border-radius: 20px;
-            padding: 2rem;
-            height: 100%;
-            box-shadow: 0 8px 24px rgba(78, 73, 43, .3);
-        }
-
-        .info-tag {
-            display: inline-block;
-            background: var(--dance-yellow);
-            color: var(--dance-ink);
-            padding: .3rem 1rem;
-            border-radius: 999px;
-            font-size: .75rem;
-            font-weight: 700;
-            margin-bottom: 1rem;
-        }
-
-        .info-card h3 {
-            color: #fff;
-            font-weight: 800;
-            margin-bottom: 1rem;
-        }
-
-        .info-list {
-            list-style: none;
-            padding: 0;
-            margin: 0 0 1.5rem;
-            display: flex;
-            flex-direction: column;
-            gap: .6rem;
-        }
-
-        .info-list li {
-            background: rgba(255, 255, 255, .08);
-            padding: .6rem 1rem;
-            border-radius: 12px;
-            font-weight: 600;
-            font-size: .9rem;
-            line-height: 1.5;
-        }
-
-        .info-footer {
-            display: flex;
-            flex-wrap: wrap;
-            gap: .5rem;
-        }
-
-        .mini-badge {
-            border: 1px solid var(--dance-yellow);
-            color: var(--dance-yellow-light);
-            padding: .25rem .8rem;
-            border-radius: 999px;
-            font-size: .75rem;
-        }
-
-        @media (max-width: 575.98px) {
-            .event-banner {
-                padding: 1.75rem 1.25rem;
-                border-radius: 18px;
-            }
-
-            .event-banner h2 {
-                font-size: 1.5rem;
-                letter-spacing: 1px;
-            }
-
-            .form-panel,
-            .info-card {
-                padding: 1.5rem;
-            }
-        }
-    </style>
-</head>
-
-<body class="crystal-dance-page">
-    <header class="inner-page-header">
-        <div class="header-inner site-header-inner">
-            <h1 class="main-title">瘞湔?梯?蝷?/h1>
-            <div class="subtitle-wrap">
-                <span class="sub-title">SECHSKIES DANCE ARCHIVE &amp; 30TH FAN PROJECT</span>
-            </div>
-        </div>
-    </header>
-
-    <nav class="portal-nav" aria-label="瘞湔?瑕酋?典誨?典?閬? data-portal-nav></nav>
-
-    <canvas id="particles"></canvas>
-
-    <main class="content-container crystal-dance-main">
-
-        <section class="crystal-dance-hero">
-            <span class="category-tag">瘞湔?瑕酋?典誨?具???隡?</span>
-            <p class="hero-desc">瘞湔?梯?蝷暹瘞湔?瑕酋?典誨?其葉??頩??港???敺?20TH
-                ?啁撠?銝脩??航???擃??嗅?潘??渡?蝬??蕃頝喟????銵?嚗蒂????2027/04/15 30TH ??????€€?/p>
-
-            <nav class="quick-nav" aria-label="?撠汗">
-                <a href="#about" class="btn btn-outline-dance btn-sm">02 ?梯?蝷曆?蝝?/a>
-                <a href="#throwback-20th" class="btn btn-outline-dance btn-sm">03 20TH 敶梁??“</a>
-                <a href="#song-archive" class="btn btn-outline-dance btn-sm">04 蝬??€</a>
-                <a href="#project-30th" class="btn btn-outline-dance btn-sm">05 30TH ?隡?</a>
-                <a href="#form-30th" class="btn btn-outline-dance btn-sm">06 ???銵典</a>
-            </nav>
-        </section>
-
-        <!-- 02 ?梯?蝷曆?蝝?-->
-        <section id="about" class="section-alt">
-            <div class="section-kicker">02 繚 ?梯?蝷曆?蝝?/div>
-            <h2 class="section-title">瘞湔?梯?蝷曆??臭??祉冗??/h2>
-            <p class="section-lead">瘞湔?梯?蝷曆??舐蝡?蝡?蝷曉?嚗€?偌?嗥摮拇撱???銝????蕃頝喋€??渲?敶梁?蝝€??憿€?航? SECHSKIES
-                ????毀蝧€??曇?蝝€???賣?鋡急?脤€€??ㄐ嚗甇瑕??啁撠??亙??渡??辣蝥€?/p>
-            <div class="keyword-row d-flex flex-wrap gap-2">
-                <span class="keyword-chip">?? 蝬?</span>
-                <span class="keyword-chip">? ???</span>
-                <span class="keyword-chip">? 蝧餉歲蝝€??/span>
-                <span class="keyword-chip">?? 銝脩??航?</span>
-                <span class="keyword-chip">?? ?啁撠?</span>
-            </div>
-        </section>
-
-        <!-- 03 20TH 敶梁??“ -->
-        <section id="throwback-20th">
-            <div class="section-kicker">03 繚 20TH 敶梁??“</div>
-            <h2 class="section-title">20TH 敶梁??“</h2>
-            <p class="section-lead">2017 撟湛??啁撠?隞交偌?嗥摮拙??20 ?典僑?箏?璈?蝐齒鈭??豢??脖葡????氬€€??芣銝€甈∟歲?暑??????乓€?敺€?甇貉???賊?瞈葬?典?銝€?臬蔣?ㄐ??擃??嗚€?/p>
-            <p class="section-lead">瘞湔?梯?蝷曉??辣蝥€遢閮嚗? 20TH ?銵€銵??渡??隞亥◤?活??????銋 2027/04/15 ??30TH ?隡????啁?????/p>
-
-            <div class="row g-4 mt-1">
-                <div class="col-12 col-sm-6">
-                    <div class="video-card">
-                        <span class="video-tag">20TH ??敶梁?</span>
-                        <div class="ratio ratio-16x9">
-                            <iframe src="https://www.youtube.com/embed/ARi0cfpv6mE" title="20TH ??敶梁?"
-                                allowfullscreen></iframe>
-                        </div>
-                    </div>
-                </div>
-                <div class="col-12 col-sm-6">
-                    <div class="video-card">
-                        <span class="video-tag">20TH 甇??敶梁?</span>
-                        <div class="ratio ratio-16x9">
-                            <iframe src="https://www.youtube.com/embed/fkJmOMPirBc" title="20TH 甇??敶梁?"
-                                allowfullscreen></iframe>
-                        </div>
-                    </div>
-                </div>
-            </div>
-        </section>
-
-        <!-- 04 蝬??€ -->
-        <section id="song-archive" class="section-alt">
-            <div class="section-kicker">04 繚 蝬??€</div>
-            <h2 class="section-title">蝬??€</h2>
-            <p class="section-lead">隞乩??撟暸??冽??渲?蝧餉歲銝剜?撣詨?曄??嚗???30TH 蝺渡??葡??楊???€??柴€?/p>
-
-            <div class="row g-4 mt-1">
-                <div class="col-12 col-sm-6 col-lg-3">
-                    <div class="song-card">
-                        <span class="song-meta">??啗情</span>
-                        <h4>Couple</h4>
-                        <p>頛翰???望??嚗??貊??犖鈭?韏唬?嚗虜鋡怠?脫風撟渡????嗆捏?毽?芸蔣?ㄐ??/p>
-                        <span class="song-meta">?拙???</span>
-                        <p>??憟質???敶Ｚ???銴?嚗??拙??嗡??????€?脩??/p>
-                    </div>
-                </div>
-                <div class="col-12 col-sm-6 col-lg-3">
-                    <div class="song-card">
-                        <span class="song-meta">??啗情</span>
-                        <h4>Com' Back</h4>
-                        <p>?飛?隞?”?脖?銝€嚗?憟?敹怒€??撘瘀?敺捆?葆??湔除瘞€?/p>
-                        <span class="song-meta">?拙???</span>
-                        <p>?舀????折?嚗停蝞蝚砌?甈∪????渡?撠?銋敹恍€?銝€?/p>
-                    </div>
-                </div>
-                <div class="col-12 col-sm-6 col-lg-3">
-                    <div class="song-card">
-                        <span class="song-meta">??啗情</span>
-                        <h4>Road Fighter</h4>
-                        <p>??撟漲憭扼€?憟?敹恬??舫???暺??€?嚗??唳除?Ｗ?頞喋€?/p>
-                        <span class="song-meta">?拙???</span>
-                        <p>?拙?撌脫??箇????€?蝺渲絲靘??擛交?嚗??拙??曉銝脩???頠詻€?/p>
-                    </div>
-                </div>
-                <div class="col-12 col-sm-6 col-lg-3">
-                    <div class="song-card">
-                        <span class="song-meta">??啗情</span>
-                        <h4>Pom Saeng Pom Sa</h4>
-                        <p>??敺??朣?敶ｇ??舫€?甇甇瑕僑蝧餉歲銝剛◤??€憭活????銝€??/p>
-                        <span class="song-meta">?拙???</span>
-                        <p>颲刻?摨阡?嚗?其葡???銝剜挾敺捆???勗?湔除瘞€?/p>
-                    </div>
-                </div>
-            </div>
-        </section>
-
-        <!-- 05 30TH ?隡? -->
-        <section id="project-30th">
-            <div class="section-kicker">05 繚 30TH ?隡?</div>
-            <h2 class="section-title">30TH ???</h2>
-            <p class="section-lead">2027/04/15 ??SECHSKIES ?粹? 30 ?典僑?摮€偌?嗥?冗????30TH
-                ???唳??頩??游摰對????喃?韏瑕????啁撠?嚗?蝬??蕃頝喟毀蝧€蔣?頛臬蟡???嚗??啁??銵?敺€遢銵典??蝝舐???/p>
-            <p class="section-lead">雿??€閬???撠勗??歲???芾???敺偌?嗥摮拍?????莎?????雿???祇?嚗?臭誑?券€ㄐ??雿????孵???/p>
-            <div class="countdown-strip" id="countdown">?? 頝 30TH 繚 2027/04/15 ?閮?銝?..</div>
-        </section>
-
-        <!-- 06 30TH ???銵典 -->
-        <section id="form-30th" class="section-alt">
-            <div class="section-kicker">06 繚 30TH ???銵典</div>
-
-            <div class="event-banner mb-4">
-                <span class="event-badge">?? SECHSKIES 30TH 繚 2027.04.15</span>
-                <h2>30TH ???銵典</h2>
-                <p>?遢銵典?舀偌?嗥?冗??2027/04/15 30TH ?????游??芋蝯??其??渡????蝺渡?甇??舀?摰寡??喟?銝?蟡???/p>
-            </div>
-
-            <div class="row g-4">
-                <div class="col-12 col-sm-7">
-                    <div class="form-panel">
-                        <h3 class="panel-title">?? ???鞈?</h3>
-                        <form action="#">
-                            <div class="row g-3">
-                                <div class="col-12 col-sm-6">
-                                    <label for="nickname" class="form-label">?梁迂</label>
-                                    <input type="text" class="form-control" id="nickname" name="nickname"
-                                        placeholder="靘??梯?撠?" required>
-                                </div>
-                                <div class="col-12 col-sm-6">
-                                    <label for="email" class="form-label">Email</label>
-                                    <input type="email" class="form-control" id="email" name="email"
-                                        placeholder="dance@example.com" required>
-                                </div>
-
-                                <div class="col-12 col-sm-6">
-                                    <label for="dance_years" class="form-label">蝺渲?蝬?撟湔</label>
-                                    <input type="number" class="form-control" id="dance_years" name="dance_years"
-                                        min="0" max="30" placeholder="0">
-                                </div>
-                                <div class="col-12 col-sm-6">
-                                    <label for="available_date" class="form-label">?臬????/label>
-                                    <input type="date" class="form-control" id="available_date" name="available_date">
-                                </div>
-
-                                <div class="col-12">
-                                    <label class="form-label d-block">?臬????20TH</label>
-                                    <div class="d-flex flex-wrap gap-2">
-                                        <input type="radio" class="btn-check" name="attended_20th"
-                                            id="attended_20th_yes" value="attended" autocomplete="off">
-                                        <label class="btn btn-outline-dance" for="attended_20th_yes">????20TH</label>
-
-                                        <input type="radio" class="btn-check" name="attended_20th"
-                                            id="attended_20th_video" value="watched_video" autocomplete="off">
-                                        <label class="btn btn-outline-dance" for="attended_20th_video">?? 20TH
-                                            敶梁?</label>
-
-                                        <input type="radio" class="btn-check" name="attended_20th"
-                                            id="attended_20th_first" value="first_time" autocomplete="off">
-                                        <label class="btn btn-outline-dance" for="attended_20th_first">蝚砌?甈∠??/label>
-                                    </div>
-                                </div>
-
-                                <div class="col-12">
-                                    <label class="form-label d-block">?喳??? 30TH ?批捆嚗銴嚗?/label>
-                                    <div class="d-flex flex-wrap gap-2">
-                                        <input type="checkbox" class="btn-check" name="participate_content"
-                                            id="content_cover" value="cover" autocomplete="off">
-                                        <label class="btn btn-outline-dance" for="content_cover">蝧餉歲</label>
-
-                                        <input type="checkbox" class="btn-check" name="participate_content"
-                                            id="content_medley" value="medley" autocomplete="off">
-                                        <label class="btn btn-outline-dance" for="content_medley">銝脩??航?</label>
-
-                                        <input type="checkbox" class="btn-check" name="participate_content"
-                                            id="content_blessing" value="blessing" autocomplete="off">
-                                        <label class="btn btn-outline-dance" for="content_blessing">蟡?敶梁?</label>
-
-                                        <input type="checkbox" class="btn-check" name="participate_content"
-                                            id="content_graphic" value="graphic" autocomplete="off">
-                                        <label class="btn btn-outline-dance" for="content_graphic">???</label>
-
-                                        <input type="checkbox" class="btn-check" name="participate_content"
-                                            id="content_editing" value="editing" autocomplete="off">
-                                        <label class="btn btn-outline-dance" for="content_editing">敶梁??芾摩</label>
-
-                                        <input type="checkbox" class="btn-check" name="participate_content"
-                                            id="content_archive" value="archive" autocomplete="off">
-                                        <label class="btn btn-outline-dance" for="content_archive">鞈??渡?</label>
-                                    </div>
-                                </div>
-
-                                <div class="col-12 col-sm-6">
-                                    <label for="song" class="form-label">?喟毀????/label>
-                                    <select class="form-select" id="song" name="song">
-                                        <option value="" selected>隢????/option>
-                                        <option value="couple">Couple</option>
-                                        <option value="comeback">Com' Back</option>
-                                        <option value="road_fighter">Road Fighter</option>
-                                        <option value="pom_saeng_pom_sa">Pom Saeng Pom Sa</option>
-                                        <option value="other">?嗡?</option>
-                                    </select>
-                                </div>
-                                <div class="col-12 col-sm-6">
-                                    <label for="reference_file" class="form-label">銝?€蔣????</label>
-                                    <input class="form-control" type="file" id="reference_file" name="reference_file"
-                                        accept="image/*,video/*">
-                                    <div class="form-text">蝧餉歲敶梁????啁???芾摩蝝??</div>
-                                </div>
-
-                                <div class="col-12">
-                                    <label for="message_30th" class="form-label">?喳? 30TH 隤芰?閰?/label>
-                                    <textarea class="form-control" id="message_30th" name="message_30th" rows="4"
-                                        placeholder="?喳?瘞湔?梯?蝷曇牧?店?鞎Ｙ??€閬隤啜€????蝳€色€?></textarea>
-                                </div>
-                            </div>
-
-                            <div class="d-grid d-sm-flex gap-3 mt-4">
-                                <button type="reset"
-                                    class="btn btn-reset-dance flex-fill order-2 order-sm-1">?憛怠神</button>
-                                <button type="submit"
-                                    class="btn btn-dance flex-fill order-1 order-sm-2">??銵典 ??</button>
-                            </div>
-                        </form>
-                    </div>
-                </div>
-
-                <div class="col-12 col-sm-5">
-                    <div class="info-card">
-                        <span class="info-tag">憛怠神?</span>
-                        <h3>???蝣箄?銝€銝?/h3>
-                        <ul class="info-list">
-                            <li>?? 瑼??澆?嚗蔣?????嚗遣霅啣瑼?100MB 隞亙</li>
-                            <li>?? ?遢鞈???瘞湔?梯?蝷曉?冽??30TH ?隡?雿輻</li>
-                            <li>?? ?敺蝣箏???嚗?敺??西??砍?蝺渡???鋆賣???/li>
-                        </ul>
-                        <div class="info-footer">
-                            <span class="mini-badge">瘞湔?瑕酋?典誨??/span>
-                            <span class="mini-badge">30TH ?隡?</span>
-                        </div>
-                    </div>
-                </div>
-            </div>
-        </section>
-
-    </main>
-
-    <footer>
-        <p>SECHSKIES Fanpage &copy; 2026 - 暺瘞??瘞賊?憌?</p>
-        <a href="https://jekkinoopy.github.io/Portfolio/" class="studio-link" target="_blank" rel="noopener noreferrer">
-            Design by <span class="mark_b">Jekkinoopy Studio</span>
-        </a>
-    </footer>
-
-    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/js/bootstrap.bundle.min.js"></script>
-    <script src="../assets/js/particles.js"></script>
-    <script src="../assets/js/portal-nav.js"></script>
-    <script>
-        (function () {
-            var target = new Date('2027-04-15T00:00:00+08:00');
-            var now = new Date();
-            var diffDays = Math.ceil((target - now) / (1000 * 60 * 60 * 24));
-            var el = document.getElementById('countdown');
-            if (el) {
-                el.textContent = diffDays > 0
-                    ? '?? 頝 30TH 繚 2027/04/15 ?? ' + diffDays + ' 憭?
-                    : '?? 30TH 繚 2027/04/15 撌脩??唬?嚗?韏瑕???嚗?;
-            }
-        })();
-    </script>
-</body>
-
-</html>
diff --git a/yellow-note/crystal-dance-survey.html b/yellow-note/crystal-dance-survey.html
deleted file mode 100644
index 6affd35..0000000
--- a/yellow-note/crystal-dance-survey.html
+++ /dev/null
@@ -1,722 +0,0 @@
-<!doctype html>
-<html lang="zh-TW">
-
-<head>
-    <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>水晶男孩推廣部｜水晶熱舞社</title>
-    <link rel="stylesheet" href="../assets/css/style.css">
-    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css" rel="stylesheet">
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css">
-    <link rel="stylesheet" href="../assets/css/tablet.css">
-    <style>
-        /* Bootstrap Reboot 還原 */
-        body.crystal-dance-page {
-            background-color: var(--color-bg);
-            color: var(--color-text);
-            font-family: 'Noto Sans TC', 'Microsoft JhengHei', system-ui, sans-serif;
-            line-height: 1.6;
-        }
-
-        h1, h2, h3, h4, h5, h6, p, ul, ol, dl, dd, blockquote, hr {
-            margin: 0;
-            padding: 0;
-        }
-
-        a {
-            color: var(--color-text);
-            text-decoration: none;
-        }
-
-        /* 標題與內文：拉開垂直節奏，避免擠在一起 */
-        body.crystal-dance-page .section-title {
-            margin-bottom: 2rem;
-        }
-
-        body.crystal-dance-page .section-title::after {
-            margin-top: 1rem;
-        }
-
-        body.crystal-dance-page .section-body {
-            max-width: 760px;
-            margin: 0 auto 2.5rem;
-        }
-
-        body.crystal-dance-page .section-body p,
-        body.crystal-dance-page .form-lead {
-            color: var(--color-text-muted);
-            line-height: 1.9;
-            text-align: left;
-            margin-bottom: 1.15rem;
-        }
-
-        body.crystal-dance-page .section-body p:last-child {
-            margin-bottom: 0;
-        }
-
-        body.crystal-dance-page .form-lead {
-            max-width: 760px;
-            margin: 0 auto 2.5rem;
-        }
-
-        /* ① 認識區 */
-        body.crystal-dance-page #about {
-            text-align: center;
-            padding-bottom: 0;
-            overflow: hidden;
-        }
-
-        body.crystal-dance-page .category-tag {
-            display: inline-block;
-            background: var(--color-brand-light);
-            color: var(--color-brand-dark);
-            padding: 0.35rem 1.15rem;
-            border-radius: 999px;
-            font-size: 0.78rem;
-            font-weight: 700;
-            letter-spacing: 1px;
-            margin-bottom: 1.5rem;
-        }
-
-        body.crystal-dance-page .hero-banner {
-            display: block;
-            width: 100%;
-            max-width: 100%;
-            aspect-ratio: 21 / 9;
-            object-fit: cover;
-            border-radius: 12px;
-            border: 1px solid rgba(255, 204, 0, 0.22);
-            margin: 0 auto 2.25rem;
-        }
-
-        body.crystal-dance-page #about .section-title {
-            margin-top: 0.25rem;
-        }
-
-        body.crystal-dance-page .keyword-row {
-            display: flex;
-            flex-wrap: wrap;
-            justify-content: center;
-            gap: 0.6rem;
-            margin: 2.25rem auto 2.5rem;
-            max-width: 640px;
-        }
-
-        body.crystal-dance-page .keyword-chip {
-            display: inline-flex;
-            align-items: center;
-            gap: 0.25rem;
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-            color: var(--color-brand-dark);
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-            font-weight: 700;
-            padding: 0.4rem 0.9rem;
-            border-radius: 999px;
-            border: 1px solid rgba(255, 204, 0, 0.35);
-        }
-
-        /* 頁內導覽：深色底條（對照參考圖） */
-        body.crystal-dance-page .page-nav-bar {
-            display: flex;
-            flex-wrap: wrap;
-            justify-content: center;
-            align-items: center;
-            gap: 0.25rem 0;
-            margin: 0 -36px;
-            padding: 0.95rem 1.5rem;
-            background: var(--color-bg-raised);
-            border-top: 1px solid rgba(255, 204, 0, 0.2);
-        }
-
-        body.crystal-dance-page .page-nav-bar a {
-            color: var(--color-brand);
-            font-size: 0.82rem;
-            font-weight: 700;
-            letter-spacing: 0.5px;
-            padding: 0.2rem 0.85rem;
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-            transition: color 0.2s ease;
-        }
-
-        body.crystal-dance-page .page-nav-bar a:last-child {
-            border-right: none;
-        }
-
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-            color: var(--color-text-inverse);
-        }
-
-        /* ② 影片區：主影片與下方三欄同寬對齊 */
-        body.crystal-dance-page .video-grid {
-            width: 100%;
-        }
-
-        body.crystal-dance-page .sub-section-title {
-            margin-top: 3rem;
-            margin-bottom: 1.25rem;
-            font-weight: 800;
-            color: var(--color-brand-dark);
-            font-size: 1.05rem;
-            text-align: center;
-            letter-spacing: 0.08em;
-        }
-
-        body.crystal-dance-page .video-label {
-            display: block;
-            color: var(--color-brand-dark);
-            font-weight: 800;
-            font-size: 0.9rem;
-            margin-bottom: 0.75rem;
-        }
-
-        body.crystal-dance-page .video-feature {
-            width: 100%;
-            margin-bottom: 0;
-        }
-
-        body.crystal-dance-page .video-feature .video-label {
-            text-align: left;
-        }
-
-        body.crystal-dance-page .video-feature .ratio,
-        body.crystal-dance-page .video-thumb .ratio {
-            border-radius: 10px;
-            overflow: hidden;
-            border: 1px solid rgba(255, 204, 0, 0.18);
-        }
-
-        body.crystal-dance-page .video-thumb {
-            height: 100%;
-        }
-
-        body.crystal-dance-page .video-thumb .video-label {
-            font-size: 0.85rem;
-            margin-bottom: 0.6rem;
-        }
-
-        body.crystal-dance-page .countdown-note {
-            display: block;
-            margin-top: 2.5rem;
-            text-align: center;
-            font-weight: 700;
-            color: var(--color-brand-dark);
-            font-size: 0.95rem;
-            letter-spacing: 0.5px;
-            padding: 0.75rem 1rem;
-            background: var(--color-surface-soft);
-            border-radius: 999px;
-            max-width: 420px;
-            margin-left: auto;
-            margin-right: auto;
-        }
-
-        /* ③ summer-form：分階段邊框排版（風格參考見面會應援調查表，顏色用全站 token） */
-        body.crystal-dance-page .summer-form {
-            max-width: 720px;
-            margin: 0 auto;
-        }
-
-        body.crystal-dance-page .summer-form__stage + .summer-form__stage {
-            margin-top: 2rem;
-        }
-
-        body.crystal-dance-page .summer-form__stage-title {
-            font-weight: 800;
-            color: var(--color-brand-dark);
-            font-size: 0.95rem;
-            letter-spacing: 0.04em;
-            margin-bottom: 0.75rem;
-            text-align: left;
-        }
-
-        body.crystal-dance-page .summer-form__stage-body {
-            border: 1px solid rgba(255, 204, 0, 0.35);
-            border-radius: 12px;
-            padding: 1.5rem 1.75rem;
-            background: #fff;
-        }
-
-        body.crystal-dance-page .summer-form__stage-body--notice {
-            background: var(--color-surface-soft);
-        }
-
-        body.crystal-dance-page .summer-form__stage-body .row {
-            --bs-gutter-y: 1.35rem;
-        }
-
-        body.crystal-dance-page .summer-form .form-label {
-            font-weight: 700;
-            color: var(--color-brand-dark);
-            font-size: 0.9rem;
-            margin-bottom: 0.5rem;
-        }
-
-        body.crystal-dance-page .summer-form .form-control,
-        body.crystal-dance-page .summer-form .form-select {
-            border: 1px solid rgba(255, 204, 0, 0.35);
-            border-radius: 10px;
-            padding: 0.65rem 0.9rem;
-            background: #fff;
-        }
-
-        body.crystal-dance-page .summer-form .form-control:focus,
-        body.crystal-dance-page .summer-form .form-select:focus {
-            border-color: var(--color-brand);
-            box-shadow: 0 0 0 0.2rem rgba(255, 204, 0, 0.2);
-        }
-
-        body.crystal-dance-page .summer-form .form-control[type="file"] {
-            border-style: dashed;
-            cursor: pointer;
-            background: var(--color-surface-soft);
-        }
-
-        body.crystal-dance-page .summer-form .form-text {
-            color: var(--color-text-muted);
-            font-size: 0.82rem;
-            margin-top: 0.35rem;
-        }
-
-        body.crystal-dance-page .summer-form .btn-outline-dance {
-            border: 1.5px solid var(--color-brand-dark);
-            color: var(--color-brand-dark);
-            border-radius: 999px;
-            font-weight: 600;
-            font-size: 0.88rem;
-            padding: 0.38rem 1rem;
-            background: #fff;
-        }
-
-        body.crystal-dance-page .summer-form .btn-check:checked + .btn-outline-dance,
-        body.crystal-dance-page .summer-form .btn-outline-dance:hover {
-            background: var(--color-brand);
-            color: var(--color-brand-dark);
-            border-color: var(--color-brand-dark);
-        }
-
-        body.crystal-dance-page .summer-form__option-row {
-            display: flex;
-            flex-wrap: wrap;
-            gap: 0.5rem;
-            margin-top: 0.15rem;
-        }
-
-        body.crystal-dance-page .summer-form .info-list {
-            list-style: none;
-            padding: 0;
-            margin: 0;
-            display: flex;
-            flex-direction: column;
-            gap: 0.85rem;
-        }
-
-        body.crystal-dance-page .summer-form .info-list li {
-            color: var(--color-text-muted);
-            font-size: 0.9rem;
-            line-height: 1.75;
-        }
-
-        body.crystal-dance-page .summer-form .info-footer-text {
-            color: var(--color-text-muted);
-            font-size: 0.8rem;
-            opacity: 0.85;
-            margin-top: 1rem;
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-
-        body.crystal-dance-page .summer-form__actions {
-            display: grid;
-            grid-template-columns: 1fr 1fr;
-            gap: 0.75rem;
-            margin-top: 2rem;
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-
-        body.crystal-dance-page .summer-form__feedback {
-            max-width: 860px;
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-            text-align: left;
-        }
-
-        body.crystal-dance-page .summer-form__feedback--success {
-            border-color: var(--color-brand);
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-
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-            position: absolute;
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-
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-    </style>
-</head>
-
-<body class="crystal-dance-page">
-    <header class="inner-page-header">
-        <div class="header-inner site-header-inner">
-            <h1 class="main-title">水晶熱舞社</h1>
-            <div class="subtitle-wrap">
-                <span class="sub-title">SECHSKIES DANCE ARCHIVE &amp; 30TH FAN PROJECT</span>
-            </div>
-        </div>
-    </header>
-
-    <nav class="portal-nav" aria-label="水晶男孩推廣部導覽" data-portal-nav></nav>
-
-    <canvas id="particles"></canvas>
-
-    <div class="container">
-
-        <!-- ① 認識水晶熱舞社 -->
-        <section id="about">
-            <img class="hero-banner" src="../assets/images/crystal-dance-hero.jpg" alt="水晶熱舞社應援視覺">
-            <span class="category-tag">水晶男孩推廣部・舞蹈應援企劃</span>
-            <!-- <h2 class="section-title">水晶熱舞社不是一般社團</h2> -->
-            <div class="section-body">
-                <p>水晶熱舞社是<span class="mark_b mark_y">水晶男孩推廣部</span>中的舞蹈應援企劃，從 20TH台灣小黃串燒聯舞的集體記憶出發，整理經典舞台、翻跳紀錄與應援行動，並<span class="fan-journey-wave">預備在 2027/04/15 30TH 前</span>募集新的參與者。</p>
-                <p>水晶熱舞社不是獨立成立的社團，而是「水晶男孩推廣部」底下的舞蹈、翻跳、應援與影片紀錄分類。凡是跟 SECHSKIE舞台有關的練習、重現與紀錄，都會被收進這個企劃裡，由歷屆台灣小黃接力整理與延續。</p>
-            </div>
-            <!-- <div class="keyword-row">
-                <span class="keyword-chip">💛 經典舞台</span>
-                <span class="keyword-chip">🕺 應援舞蹈</span>
-                <span class="keyword-chip">🎥 翻跳紀錄</span>
-                <span class="keyword-chip">💃 串燒聯舞</span>
-                <span class="keyword-chip">🇹🇼 台灣小黃</span>
-            </div>
-            <nav class="page-nav-bar" aria-label="頁面導覽">
-                <a href="#about">認識熱舞社</a>
-                <a href="#from-20th-to-30th">20TH 到 30TH</a>
-                <a href="#form-30th">應援表單</a>
-            </nav> -->
-        </section>
-
-        <!-- ② 從 20TH 到 30TH -->
-        <section id="from-20th-to-30th">
-            
-            <div class="video-grid">
-                <h2 class="section-title">從 20TH 到 30TH</h2>
-                <div class="video-feature">
-                    <!-- <span class="video-label">20TH 正式影片</span> -->
-                    <div class="ratio ratio-16x9">
-                        <iframe src="https://www.youtube.com/embed/fkJmOMPirBc" title="20TH 正式影片：SECHSKIES 20週年紀念串燒舞蹈"
-                        allowfullscreen></iframe>
-                    </div>
-<div class="section-body">
-    <p>水晶熱舞社是<span class="mark_b mark_y">水晶男孩推廣部</span>底下的舞蹈應援企劃，從 20TH 台灣小黃串燒聯舞的集體記憶出發，整理 SECHSKIES 經典舞台、翻跳紀錄與應援行動，並<span class="fan-journey-wave">預備在 2027/04/15 30TH 前</span>募集新的參與者，由歷屆台灣小黃接力延續。</p>
-</div>
-                </div>
-
-                <h3 class="sub-section-title">延伸閱讀</h3>
-                <div class="row g-4">
-                    <div class="col-12 col-sm-6 col-lg-4">
-                        <div class="video-thumb">
-                            <div class="ratio ratio-16x9">
-                                <iframe src="https://www.youtube.com/embed/ARi0cfpv6mE" title="20TH 預告影片"
-                                allowfullscreen></iframe>
-                            </div>
-                            <span class="video-label">預告</span>
-                        </div>
-                    </div>
-                    <div class="col-12 col-sm-6 col-lg-4">
-                        <div class="video-thumb">
-                            <div class="ratio ratio-16x9">
-                                <iframe src="https://www.youtube.com/embed/nygNm5mtsJM" title="幕後花絮 #1"
-                                allowfullscreen></iframe>
-                            </div>
-                            <span class="video-label">幕後花絮 #1</span>
-                        </div>
-                    </div>
-                    <div class="col-12 col-sm-6 col-lg-4">
-                        <div class="video-thumb">
-                            <div class="ratio ratio-16x9">
-                                <iframe src="https://www.youtube.com/embed/f04neSErUEY" title="幕後花絮 #2・雨中共舞"
-                                allowfullscreen></iframe>
-                            </div>
-                            <span class="video-label">幕後花絮 #2・雨中共舞</span>
-                        </div>
-                    </div>
-                </div>
-            </div>
-
-            <!-- <h3 class="sub-section-title">30TH 應援募集</h3> -->
-            <div class="section-body">
-                <p>2027/04/15 是 SECHSKIES 出道 30 周年的日子。水晶熱舞社預計在 30TH
-                    前重新整理舞蹈應援內容，募集想一起參與的台灣小黃，從經典舞曲、翻跳練習、影片剪輯到祝福文字，讓新的應援行動從這份表單開始累積。</p>
-                <p>你不需要一開始就很會跳舞，只要還記得水晶男孩的舞台、歌曲，或某個讓你入坑的瞬間，都可以在這裡留下你的參與方式。</p>
-            </div>
-            <span class="countdown-note" id="countdown">💛 距離 30TH · 2027/04/15 倒數計算中...</span>
-        </section>
-
-        <!-- ③ 30TH 應援募集表單 -->
-        <section id="form-30th">
-            <h2 class="section-title">30TH 應援募集表單</h2>
-            <p class="form-lead">這份表單是水晶熱舞社為 2027/04/15 30TH 預備的應援募集模組，用來整理參與者想練的歌曲、可支援的內容與想留下的祝福。</p>
-
-            <div class="summer-form__feedback" data-form-feedback hidden tabindex="-1" aria-live="polite"></div>
-
-            <form class="summer-form" action="dance-application-submit.php" method="post" enctype="multipart/form-data" data-dance-application-form>
-                <label class="summer-form__trap" aria-hidden="true">網站<input type="text" name="website" tabindex="-1" autocomplete="off"></label>
-
-                <div class="summer-form__stage">
-                    <h3 class="summer-form__stage-title">填寫須知</h3>
-                    <div class="summer-form__stage-body summer-form__stage-body--notice">
-                        <ul class="info-list">
-                            <li>📎 檔案格式：影片或圖片皆可，單檔上限 8 MB</li>
-                            <li>🔒 這份資料僅供水晶熱舞社內部整理 30TH 應援企劃使用</li>
-                            <li>📅 送出後若確定參與，之後會另行公告練習與錄製時間</li>
-                        </ul>
-                        <p class="info-footer-text">水晶男孩推廣部・30TH 應援企劃</p>
-                    </div>
-                </div>
-
-                <div class="summer-form__stage">
-                    <h3 class="summer-form__stage-title">第一階段｜參與者基本資料</h3>
-                    <div class="summer-form__stage-body">
-                        <div class="row g-4">
-                            <div class="col-12 col-sm-6">
-                                <label for="nickname" class="form-label">暱稱</label>
-                                <input type="text" class="form-control" id="nickname" name="nickname"
-                                    maxlength="80" placeholder="例：熱舞小黃" required>
-                            </div>
-                            <div class="col-12 col-sm-6">
-                                <label for="email" class="form-label">Email</label>
-                                <input type="email" class="form-control" id="email" name="email"
-                                    maxlength="190" placeholder="dance@example.com" required>
-                            </div>
-                            <div class="col-12 col-sm-6">
-                                <label for="dance_years" class="form-label">練舞經驗年數</label>
-                                <input type="number" class="form-control" id="dance_years" name="dance_years"
-                                    min="0" max="30" placeholder="0">
-                            </div>
-                            <div class="col-12 col-sm-6">
-                                <label for="available_date" class="form-label">可參與日期</label>
-                                <input type="date" class="form-control" id="available_date" name="available_date">
-                            </div>
-                        </div>
-                    </div>
-                </div>
-
-                <div class="summer-form__stage">
-                    <h3 class="summer-form__stage-title">第二階段｜30TH 參與意向</h3>
-                    <div class="summer-form__stage-body">
-                        <div class="row g-4">
-                            <div class="col-12">
-                                <label class="form-label d-block">是否參加過 20TH</label>
-                                <div class="summer-form__option-row">
-                                    <input type="radio" class="btn-check" name="attended_20th"
-                                        id="attended_20th_yes" value="attended" autocomplete="off" required>
-                                    <label class="btn btn-outline-dance" for="attended_20th_yes">參加過 20TH</label>
-
-                                    <input type="radio" class="btn-check" name="attended_20th"
-                                        id="attended_20th_video" value="watched_video" autocomplete="off">
-                                    <label class="btn btn-outline-dance" for="attended_20th_video">看過 20TH 影片</label>
-
-                                    <input type="radio" class="btn-check" name="attended_20th"
-                                        id="attended_20th_first" value="first_time" autocomplete="off">
-                                    <label class="btn btn-outline-dance" for="attended_20th_first">第一次知道</label>
-                                </div>
-                            </div>
-                            <div class="col-12">
-                                <label class="form-label d-block">想參與的 30TH 內容（可複選）</label>
-                                <div class="summer-form__option-row">
-                                    <input type="checkbox" class="btn-check" name="participate_content[]"
-                                        id="content_cover" value="cover" autocomplete="off">
-                                    <label class="btn btn-outline-dance" for="content_cover">翻跳</label>
-
-                                    <input type="checkbox" class="btn-check" name="participate_content[]"
-                                        id="content_medley" value="medley" autocomplete="off">
-                                    <label class="btn btn-outline-dance" for="content_medley">串燒聯舞</label>
-
-                                    <input type="checkbox" class="btn-check" name="participate_content[]"
-                                        id="content_blessing" value="blessing" autocomplete="off">
-                                    <label class="btn btn-outline-dance" for="content_blessing">祝福影片</label>
-
-                                    <input type="checkbox" class="btn-check" name="participate_content[]"
-                                        id="content_graphic" value="graphic" autocomplete="off">
-                                    <label class="btn btn-outline-dance" for="content_graphic">圖文應援</label>
-
-                                    <input type="checkbox" class="btn-check" name="participate_content[]"
-                                        id="content_editing" value="editing" autocomplete="off">
-                                    <label class="btn btn-outline-dance" for="content_editing">影片剪輯</label>
-
-                                    <input type="checkbox" class="btn-check" name="participate_content[]"
-                                        id="content_archive" value="archive" autocomplete="off">
-                                    <label class="btn btn-outline-dance" for="content_archive">資料整理</label>
-                                </div>
-                            </div>
-                        </div>
-                    </div>
-                </div>
-
-                <div class="summer-form__stage">
-                    <h3 class="summer-form__stage-title">第三階段｜應援內容與祝福</h3>
-                    <div class="summer-form__stage-body">
-                        <div class="row g-4">
-                            <div class="col-12 col-sm-6">
-                                <label for="song" class="form-label">想練的歌曲</label>
-                                <select class="form-select" id="song" name="song">
-                                    <option value="" selected>請選擇歌曲</option>
-                                    <option value="couple">Couple</option>
-                                    <option value="comeback">Com' Back</option>
-                                    <option value="road_fighter">Road Fighter</option>
-                                    <option value="pom_saeng_pom_sa">Pom Saeng Pom Sa</option>
-                                    <option value="other">其他</option>
-                                </select>
-                            </div>
-                            <div class="col-12 col-sm-6">
-                                <label for="reference_file" class="form-label">上傳參考影片或圖片</label>
-                                <input class="form-control" type="file" id="reference_file" name="reference_file"
-                                    accept="image/*,video/*">
-                                <div class="form-text">翻跳影片、舞台照片或剪輯素材皆可</div>
-                            </div>
-                            <div class="col-12">
-                                <label for="message_30th" class="form-label">想對 30TH 說的話</label>
-                                <textarea class="form-control" id="message_30th" name="message_30th" rows="4" maxlength="5000"
-                                    placeholder="想對水晶熱舞社說的話、想貢獻的部分、想見到誰、想留下的祝福……"></textarea>
-                            </div>
-                        </div>
-                    </div>
-                </div>
-
-                <div class="summer-form__actions">
-                    <button type="reset" class="btn btn-reset-dance">重新填寫</button>
-                    <button type="submit" class="btn btn-dance" data-submit-button>送出應援表單 💛</button>
-                </div>
-            </form>
-        </section>
-
-    </div>
-
-    <footer>
-        <p>SECHSKIES Fanpage &copy; 2026 - 黃色氣球永遠飄揚</p>
-        <a href="https://jekkinoopy.github.io/Portfolio/" class="studio-link" target="_blank" rel="noopener noreferrer">
-            Design by <span class="mark_b">Jekkinoopy Studio</span>
-        </a>
-    </footer>
-
-    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/js/bootstrap.bundle.min.js"></script>
-    <script src="../assets/js/particles.js"></script>
-    <script src="../assets/js/portal-nav.js"></script>
-    <script>
-        (function () {
-            var target = new Date('2027-04-15T00:00:00+08:00');
-            var now = new Date();
-            var diffDays = Math.ceil((target - now) / (1000 * 60 * 60 * 24));
-            var el = document.getElementById('countdown');
-            if (el) {
-                el.textContent = diffDays > 0
-                    ? '💛 距離 30TH · 2027/04/15 還有 ' + diffDays + ' 天'
-                    : '💛 30TH · 2027/04/15 已經到來，一起再集合！';
-            }
-        })();
-
-        (function () {
-            var form = document.querySelector('[data-dance-application-form]');
-            var feedback = document.querySelector('[data-form-feedback]');
-            var submitButton = document.querySelector('[data-submit-button]');
-            var result = new URLSearchParams(window.location.search).get('form');
-            var messages = {
-                success: ['success', '已收到你的應援報名！水晶熱舞社整理後會依你留下的 Email 聯絡。'],
-                invalid: ['error', '有欄位尚未完成或格式不正確，請檢查後再送出。'],
-                file_too_large: ['error', '上傳檔案超過 8 MB，請縮小檔案後再送出。'],
-                file_type: ['error', '檔案格式不支援，請改用圖片、MP4、WebM 或 MOV。'],
-                too_many: ['error', '短時間內送出次數較多，請稍候兩分鐘再試。'],
-                unavailable: ['error', '目前暫時無法儲存報名，請稍後再試。']
-            };
-
-            function showFeedback(type, message) {
-                if (!feedback) return;
-                feedback.hidden = false;
-                feedback.className = 'summer-form__feedback summer-form__feedback--' + type;
-                feedback.textContent = message;
-                feedback.focus();
-            }
-
-            if (result && messages[result]) {
-                showFeedback(messages[result][0], messages[result][1]);
-            }
-
-            if (form) {
-                form.addEventListener('submit', function (event) {
-                    var selectedContent = form.querySelectorAll('input[name="participate_content[]"]:checked');
-                    if (!selectedContent.length) {
-                        event.preventDefault();
-                        showFeedback('error', '請至少選擇一項想參與的 30TH 內容。');
-                        var firstContent = form.querySelector('input[name="participate_content[]"]');
-                        if (firstContent) firstContent.focus();
-                        return;
-                    }
-                    if (submitButton) {
-                        submitButton.disabled = true;
-                        submitButton.textContent = '送出中…';
-                    }
-                });
-            }
-        })();
-    </script>
-</body>
-
-</html>
diff --git a/yellow-note/dance-application-submit.php b/yellow-note/dance-application-submit.php
deleted file mode 100644
index 5bfffd5..0000000
--- a/yellow-note/dance-application-submit.php
+++ /dev/null
@@ -1,170 +0,0 @@
-<?php
-declare(strict_types=1);
-
-$config = require __DIR__ . '/../admin/config.php';
-
-function return_to_dance_form(string $result): never
-{
-    header('Location: crystal-dance-survey.html?form=' . rawurlencode($result) . '#form-30th', true, 303);
-    exit;
-}
-
-function post_value(string $key, int $maxLength): string
-{
-    $value = trim((string) ($_POST[$key] ?? ''));
-    return mb_substr($value, 0, $maxLength, 'UTF-8');
-}
-
-if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
-    http_response_code(405);
-    header('Allow: POST');
-    exit('Method Not Allowed');
-}
-
-$maxUploadBytes = (int) $config['dance_max_upload_bytes'];
-$contentLength = (int) ($_SERVER['CONTENT_LENGTH'] ?? 0);
-if ($contentLength > $maxUploadBytes + 1024 * 1024) {
-    return_to_dance_form('file_too_large');
-}
-
-// 隱藏欄位有內容時視為機器送件；不透露攔截規則。
-if (trim((string) ($_POST['website'] ?? '')) !== '') {
-    return_to_dance_form('success');
-}
-
-$nickname = post_value('nickname', 80);
-$email = mb_strtolower(post_value('email', 190), 'UTF-8');
-$danceYearsRaw = trim((string) ($_POST['dance_years'] ?? ''));
-$availableDate = trim((string) ($_POST['available_date'] ?? ''));
-$attended20th = trim((string) ($_POST['attended_20th'] ?? ''));
-$song = trim((string) ($_POST['song'] ?? ''));
-$message30th = post_value('message_30th', 5000);
-
-$allowedAttendance = ['attended', 'watched_video', 'first_time'];
-$allowedContent = ['cover', 'medley', 'blessing', 'graphic', 'editing', 'archive'];
-$allowedSongs = ['', 'couple', 'comeback', 'road_fighter', 'pom_saeng_pom_sa', 'other'];
-
-$selectedContent = $_POST['participate_content'] ?? [];
-if (!is_array($selectedContent)) {
-    $selectedContent = [$selectedContent];
-}
-$selectedContent = array_values(array_unique(array_intersect(
-    $allowedContent,
-    array_map(static fn ($value): string => trim((string) $value), $selectedContent)
-)));
-
-if ($nickname === '' || !filter_var($email, FILTER_VALIDATE_EMAIL) || !$selectedContent) {
-    return_to_dance_form('invalid');
-}
-if ($attended20th !== '' && !in_array($attended20th, $allowedAttendance, true)) {
-    return_to_dance_form('invalid');
-}
-if (!in_array($song, $allowedSongs, true)) {
-    return_to_dance_form('invalid');
-}
-
-$danceYears = null;
-if ($danceYearsRaw !== '') {
-    $danceYearsFilter = filter_var($danceYearsRaw, FILTER_VALIDATE_INT, ['options' => ['min_range' => 0, 'max_range' => 30]]);
-    if ($danceYearsFilter === false) {
-        return_to_dance_form('invalid');
-    }
-    $danceYears = (int) $danceYearsFilter;
-}
-
-if ($availableDate !== '') {
-    $date = DateTimeImmutable::createFromFormat('!Y-m-d', $availableDate);
-    if (!$date || $date->format('Y-m-d') !== $availableDate) {
-        return_to_dance_form('invalid');
-    }
-}
-
-$db = $config['db'];
-$dsn = "mysql:host={$db['host']};port={$db['port']};dbname={$db['name']};charset=utf8mb4";
-try {
-    $pdo = new PDO($dsn, $db['user'], $db['pass'], [
-        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
-        PDO::ATTR_EMULATE_PREPARES => false,
-    ]);
-} catch (PDOException) {
-    return_to_dance_form('unavailable');
-}
-
-$submittedIp = mb_substr((string) ($_SERVER['REMOTE_ADDR'] ?? ''), 0, 45, 'UTF-8');
-if ($submittedIp !== '') {
-    $rate = $pdo->prepare('SELECT COUNT(*) FROM dance_applications WHERE submitted_ip = ? AND created_at >= DATE_SUB(NOW(), INTERVAL 2 MINUTE)');
-    $rate->execute([$submittedIp]);
-    if ((int) $rate->fetchColumn() >= 3) {
-        return_to_dance_form('too_many');
-    }
-}
-
-$storedFileName = null;
-$originalFileName = null;
-$mimeType = null;
-$fileSize = null;
-$file = $_FILES['reference_file'] ?? null;
-if (is_array($file) && (int) ($file['error'] ?? UPLOAD_ERR_NO_FILE) !== UPLOAD_ERR_NO_FILE) {
-    if ((int) $file['error'] !== UPLOAD_ERR_OK || (int) $file['size'] > $maxUploadBytes) {
-        return_to_dance_form('file_too_large');
-    }
-
-    $allowedMimeTypes = [
-        'image/jpeg' => 'jpg',
-        'image/png' => 'png',
-        'image/gif' => 'gif',
-        'image/webp' => 'webp',
-        'video/mp4' => 'mp4',
-        'video/webm' => 'webm',
-        'video/quicktime' => 'mov',
-    ];
-    $mimeType = (new finfo(FILEINFO_MIME_TYPE))->file((string) $file['tmp_name']) ?: '';
-    if (!isset($allowedMimeTypes[$mimeType])) {
-        return_to_dance_form('file_type');
-    }
-
-    $uploadDir = (string) $config['dance_upload_dir'];
-    if (!is_dir($uploadDir) && !mkdir($uploadDir, 0750, true) && !is_dir($uploadDir)) {
-        return_to_dance_form('unavailable');
-    }
-    $storedFileName = bin2hex(random_bytes(20)) . '.' . $allowedMimeTypes[$mimeType];
-    if (!move_uploaded_file((string) $file['tmp_name'], $uploadDir . DIRECTORY_SEPARATOR . $storedFileName)) {
-        return_to_dance_form('unavailable');
-    }
-    $originalFileName = mb_substr(basename((string) $file['name']), 0, 255, 'UTF-8');
-    $fileSize = (int) $file['size'];
-}
-
-try {
-    $stmt = $pdo->prepare(
-        'INSERT INTO dance_applications
-        (nickname, email, dance_years, available_date, attended_20th, participate_content, song,
-         reference_file_name, reference_original_name, reference_mime_type, reference_file_size,
-         message_30th, submitted_ip, user_agent)
-        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)'
-    );
-    $stmt->execute([
-        $nickname,
-        $email,
-        $danceYears,
-        $availableDate !== '' ? $availableDate : null,
-        $attended20th !== '' ? $attended20th : null,
-        implode(',', $selectedContent),
-        $song !== '' ? $song : null,
-        $storedFileName,
-        $originalFileName,
-        $mimeType,
-        $fileSize,
-        $message30th !== '' ? $message30th : null,
-        $submittedIp !== '' ? $submittedIp : null,
-        mb_substr((string) ($_SERVER['HTTP_USER_AGENT'] ?? ''), 0, 255, 'UTF-8'),
-    ]);
-} catch (PDOException) {
-    if ($storedFileName !== null) {
-        @unlink((string) $config['dance_upload_dir'] . DIRECTORY_SEPARATOR . $storedFileName);
-    }
-    return_to_dance_form('unavailable');
-}
-
-return_to_dance_form('success');
diff --git a/yellow-note/dance-practices-data.php b/yellow-note/dance-practices-data.php
deleted file mode 100644
index 8deaf85..0000000
--- a/yellow-note/dance-practices-data.php
+++ /dev/null
@@ -1,52 +0,0 @@
-<?php
-declare(strict_types=1);
-
-header('Content-Type: application/json; charset=utf-8');
-header('Cache-Control: no-store');
-
-$config = require __DIR__ . '/../admin/config.php';
-$db = $config['db'];
-$dsn = "mysql:host={$db['host']};port={$db['port']};dbname={$db['name']};charset=utf8mb4";
-
-try {
-    $pdo = new PDO($dsn, $db['user'], $db['pass'], [
-        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
-        PDO::ATTR_EMULATE_PREPARES => false,
-    ]);
-    $rows = $pdo->query(
-        "SELECT id, title, tags, practice_focus, video_url, difficulty, progress_status,
-                note_text, is_featured, sort_order, status
-         FROM dance_practice_items
-         WHERE status IN ('published', 'coming_soon')
-         ORDER BY sort_order, id"
-    )->fetchAll();
-} catch (PDOException) {
-    http_response_code(503);
-    echo json_encode(['ok' => false, 'items' => []], JSON_UNESCAPED_UNICODE);
-    exit;
-}
-
-$difficultyLabels = ['easy' => '入門', 'medium' => '中等', 'hard' => '挑戰'];
-$progressLabels = ['not_started' => '未開始', 'practicing' => '練習中', 'review' => '待複習', 'completed' => '已完成'];
-
-$items = array_map(static function (array $row) use ($difficultyLabels, $progressLabels): array {
-    $videoUrl = trim((string) ($row['video_url'] ?? ''));
-    if ($videoUrl !== '' && (!filter_var($videoUrl, FILTER_VALIDATE_URL) || !preg_match('/^https?:\/\//i', $videoUrl))) {
-        $videoUrl = '';
-    }
-    return [
-        'id' => (int) $row['id'],
-        'title' => (string) $row['title'],
-        'tags' => array_values(array_filter(array_map('trim', explode(',', (string) ($row['tags'] ?? ''))))),
-        'practiceFocus' => (string) $row['practice_focus'],
-        'videoUrl' => $videoUrl,
-        'difficulty' => $difficultyLabels[$row['difficulty']] ?? (string) $row['difficulty'],
-        'progress' => $progressLabels[$row['progress_status']] ?? (string) $row['progress_status'],
-        'note' => (string) ($row['note_text'] ?? ''),
-        'featured' => (bool) $row['is_featured'],
-        'comingSoon' => $row['status'] === 'coming_soon',
-    ];
-}, $rows);
-
-echo json_encode(['ok' => true, 'items' => $items], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
diff --git a/yellow-note/practice-room.html b/yellow-note/practice-room.html
deleted file mode 100644
index 6d6b53c..0000000
--- a/yellow-note/practice-room.html
+++ /dev/null
@@ -1,1206 +0,0 @@
-<!doctype html>
-<html lang="zh-TW">
-
-<head>
-    <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>水晶男孩推廣部｜水晶練習室</title>
-    <link rel="stylesheet" href="../assets/css/style.css">
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css">
-    <link rel="stylesheet" href="../assets/css/tablet.css">
-    <style>
-        /* ── 水晶練習室 scope token ── */
-        body.practice-room-page {
-            --practice-accent: var(--color-brand);
-            --practice-accent-soft: var(--color-brand-light);
-            --practice-surface: var(--color-surface);
-            --practice-surface-soft: var(--color-surface-soft);
-            --practice-text: var(--color-text);
-            --practice-text-muted: var(--color-text-muted);
-            --practice-text-dark: var(--color-brand-dark);
-            --practice-border: rgba(255, 204, 0, 0.28);
-            --practice-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
-
-            background-color: var(--color-bg);
-            color: var(--practice-text);
-            font-family: 'Noto Sans TC', 'Microsoft JhengHei', system-ui, sans-serif;
-            line-height: 1.6;
-        }
-
-        body.practice-room-page h1,
-        body.practice-room-page h2,
-        body.practice-room-page h3,
-        body.practice-room-page h4,
-        body.practice-room-page p,
-        body.practice-room-page ul,
-        body.practice-room-page ol {
-            margin: 0;
-            padding: 0;
-        }
-
-        body.practice-room-page a {
-            color: inherit;
-            text-decoration: none;
-        }
-
-        body.practice-room-page .practice-room {
-            position: relative;
-            z-index: 1;
-            max-width: 1080px;
-            margin: 0 auto;
-            padding: 2.5rem 1.25rem 3.5rem;
-        }
-
-        body.practice-room-page .practice-room__block {
-            margin-bottom: 4rem;
-        }
-
-        body.practice-room-page .practice-room__block-title {
-            font-size: clamp(1.35rem, 3vw, 1.75rem);
-            font-weight: 900;
-            color: var(--practice-text-dark);
-            text-align: center;
-            letter-spacing: 0.06em;
-            margin-bottom: 0.5rem;
-        }
-
-        body.practice-room-page .practice-room__block-sub {
-            display: block;
-            text-align: center;
-            font-size: 0.78rem;
-            font-weight: 700;
-            letter-spacing: 0.22em;
-            color: var(--practice-text-muted);
-            margin-bottom: 2rem;
-        }
-
-        body.practice-room-page .practice-room__block-title::after {
-            content: "";
-            display: block;
-            width: 3rem;
-            height: 3px;
-            margin: 0.85rem auto 0;
-            background: linear-gradient(90deg, transparent, var(--practice-accent), transparent);
-            border-radius: 2px;
-        }
-
-        /* ── Hero ── */
-        body.practice-room-page .practice-room__hero {
-            text-align: center;
-            padding: 2rem 1.25rem 2.5rem;
-            background: linear-gradient(165deg,
-                    var(--practice-surface-soft) 0%,
-                    var(--practice-surface) 55%,
-                    rgba(255, 249, 232, 0.6) 100%);
-            border: 1px solid var(--practice-border);
-            border-radius: 20px;
-            box-shadow: var(--practice-shadow);
-            margin-bottom: 3.5rem;
-        }
-
-        body.practice-room-page .practice-room__hero-badge {
-            display: inline-block;
-            background: var(--color-bg-raised);
-            color: var(--practice-accent);
-            font-size: 0.72rem;
-            font-weight: 700;
-            letter-spacing: 0.12em;
-            padding: 0.35rem 1rem;
-            border-radius: 999px;
-            border: 1px solid var(--practice-border);
-            margin-bottom: 1.25rem;
-        }
-
-        body.practice-room-page .practice-room__hero-title {
-            font-size: clamp(2rem, 5.5vw, 3rem);
-            font-weight: 900;
-            color: var(--practice-text-dark);
-            letter-spacing: 0.1em;
-            margin-bottom: 0.35rem;
-        }
-
-        body.practice-room-page .practice-room__hero-en {
-            font-size: clamp(0.85rem, 2vw, 1rem);
-            font-weight: 700;
-            letter-spacing: 0.28em;
-            color: var(--practice-text-muted);
-            margin-bottom: 1.5rem;
-        }
-
-        body.practice-room-page .practice-room__hero-lead {
-            max-width: 680px;
-            margin: 0 auto 1.75rem;
-            color: var(--practice-text-muted);
-            font-size: 0.95rem;
-            line-height: 1.9;
-            text-align: left;
-        }
-
-        body.practice-room-page .practice-room__tag-row {
-            display: flex;
-            flex-wrap: wrap;
-            justify-content: center;
-            gap: 0.55rem;
-            max-width: 640px;
-            margin: 0 auto;
-        }
-
-        body.practice-room-page .practice-room__tag {
-            display: inline-flex;
-            align-items: center;
-            gap: 0.3rem;
-            background: var(--practice-accent-soft);
-            color: var(--practice-text-dark);
-            font-size: 0.8rem;
-            font-weight: 700;
-            padding: 0.42rem 0.9rem;
-            border-radius: 999px;
-            border: 1px solid var(--practice-border);
-            white-space: nowrap;
-        }
-
-        /* ── 分館卡片 ── */
-        body.practice-room-page .practice-room__hall-grid {
-            display: grid;
-            grid-template-columns: repeat(2, 1fr);
-            gap: 1.15rem;
-            align-items: stretch;
-        }
-
-        body.practice-room-page .practice-room__hall-card {
-            display: flex;
-            flex-direction: column;
-            background: var(--practice-surface);
-            border: 1px solid var(--practice-border);
-            border-radius: 16px;
-            padding: 1.5rem 1.35rem;
-            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
-            transition: transform 0.2s ease, box-shadow 0.2s ease;
-        }
-
-        body.practice-room-page .practice-room__hall-card:hover {
-            transform: translateY(-3px);
-            box-shadow: var(--practice-shadow);
-        }
-
-        body.practice-room-page .practice-room__hall-icon {
-            display: inline-flex;
-            align-items: center;
-            justify-content: center;
-            width: 2.5rem;
-            height: 2.5rem;
-            background: var(--practice-accent-soft);
-            color: var(--practice-text-dark);
-            border-radius: 12px;
-            font-size: 1.1rem;
-            margin-bottom: 0.85rem;
-        }
-
-        body.practice-room-page .practice-room__hall-name {
-            font-size: 1.05rem;
-            font-weight: 800;
-            color: var(--practice-text-dark);
-            text-align: center;
-            margin-bottom: 0.65rem;
-            letter-spacing: 0.04em;
-        }
-
-        body.practice-room-page .practice-room__hall-desc {
-            color: var(--practice-text-muted);
-            font-size: 0.88rem;
-            line-height: 1.8;
-            text-align: left;
-            flex: 1;
-        }
-
-        /* ── 練習播放器 ── */
-        body.practice-room-page .practice-room__player-wrap {
-            background: var(--color-bg-raised);
-            border: 1px solid var(--practice-border);
-            border-radius: 18px;
-            padding: 1.25rem;
-            box-shadow: var(--practice-shadow);
-        }
-
-        body.practice-room-page .practice-room__video-stage {
-            position: relative;
-            width: 100%;
-            aspect-ratio: 16 / 9;
-            background: var(--color-bg);
-            border-radius: 12px;
-            overflow: hidden;
-            border: 1px solid rgba(255, 204, 0, 0.15);
-        }
-
-        body.practice-room-page .practice-room__video-inner {
-            width: 100%;
-            height: 100%;
-            display: flex;
-            align-items: center;
-            justify-content: center;
-        }
-
-        body.practice-room-page .practice-room__video-inner--mirror {
-            transform: scaleX(-1);
-        }
-
-        body.practice-room-page .practice-room__video {
-            width: 100%;
-            height: 100%;
-            object-fit: contain;
-            display: block;
-        }
-
-        body.practice-room-page .practice-room__video-placeholder {
-            position: absolute;
-            inset: 0;
-            display: flex;
-            flex-direction: column;
-            align-items: center;
-            justify-content: center;
-            gap: 0.75rem;
-            color: var(--color-text-inverse);
-            text-align: center;
-            padding: 1.5rem;
-            background: radial-gradient(ellipse at center, rgba(78, 73, 43, 0.35) 0%, rgba(10, 10, 10, 0.92) 70%);
-            pointer-events: none;
-        }
-
-        body.practice-room-page .practice-room__video-placeholder i {
-            font-size: 2.5rem;
-            color: var(--practice-accent);
-            opacity: 0.85;
-        }
-
-        body.practice-room-page .practice-room__video-placeholder p {
-            font-size: 0.95rem;
-            font-weight: 700;
-            letter-spacing: 0.06em;
-            color: var(--color-text-inverse);
-        }
-
-        body.practice-room-page .practice-room__video-placeholder span {
-            font-size: 0.78rem;
-            color: rgba(244, 244, 244, 0.65);
-        }
-
-        body.practice-room-page .practice-room__video-placeholder.is-hidden {
-            display: none;
-        }
-
-        body.practice-room-page .practice-room__controls {
-            margin-top: 1.15rem;
-            display: flex;
-            flex-direction: column;
-            gap: 0.85rem;
-        }
-
-        body.practice-room-page .practice-room__progress-row {
-            display: flex;
-            align-items: center;
-            gap: 0.65rem;
-        }
-
-        body.practice-room-page .practice-room__time {
-            font-size: 0.78rem;
-            font-weight: 700;
-            color: var(--color-text-inverse);
-            font-variant-numeric: tabular-nums;
-            min-width: 2.8rem;
-            text-align: center;
-            flex-shrink: 0;
-        }
-
-        body.practice-room-page .practice-room__progress {
-            flex: 1;
-            height: 8px;
-            background: rgba(255, 255, 255, 0.12);
-            border-radius: 999px;
-            cursor: pointer;
-            position: relative;
-            touch-action: none;
-        }
-
-        body.practice-room-page .practice-room__progress-fill {
-            height: 100%;
-            width: 0%;
-            background: linear-gradient(90deg, var(--practice-accent), var(--practice-accent-soft));
-            border-radius: 999px;
-            pointer-events: none;
-        }
-
-        body.practice-room-page .practice-room__progress-ab {
-            position: absolute;
-            top: -3px;
-            height: 14px;
-            background: rgba(255, 204, 0, 0.35);
-            border-radius: 4px;
-            pointer-events: none;
-            display: none;
-        }
-
-        body.practice-room-page .practice-room__progress-ab.is-visible {
-            display: block;
-        }
-
-        body.practice-room-page .practice-room__btn-row {
-            display: flex;
-            flex-wrap: wrap;
-            gap: 0.5rem;
-            justify-content: center;
-        }
-
-        body.practice-room-page .practice-room__btn {
-            display: inline-flex;
-            align-items: center;
-            justify-content: center;
-            gap: 0.35rem;
-            min-height: 44px;
-            min-width: 44px;
-            padding: 0.5rem 0.85rem;
-            border: 1px solid var(--practice-border);
-            border-radius: 10px;
-            background: rgba(255, 255, 255, 0.06);
-            color: var(--color-text-inverse);
-            font-size: 0.82rem;
-            font-weight: 700;
-            font-family: inherit;
-            cursor: pointer;
-            transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
-            white-space: nowrap;
-        }
-
-        body.practice-room-page .practice-room__btn:hover {
-            background: rgba(255, 204, 0, 0.15);
-            border-color: var(--practice-accent);
-        }
-
-        body.practice-room-page .practice-room__btn.is-active {
-            background: var(--practice-accent);
-            color: var(--practice-text-dark);
-            border-color: var(--practice-accent);
-        }
-
-        body.practice-room-page .practice-room__btn--primary {
-            background: var(--practice-accent);
-            color: var(--practice-text-dark);
-            border-color: var(--practice-accent);
-            font-weight: 800;
-        }
-
-        body.practice-room-page .practice-room__btn--primary:hover {
-            background: var(--practice-accent-soft);
-        }
-
-        body.practice-room-page .practice-room__control-group {
-            display: flex;
-            flex-wrap: wrap;
-            align-items: center;
-            gap: 0.5rem;
-            padding: 0.65rem 0;
-            border-top: 1px solid rgba(255, 255, 255, 0.08);
-        }
-
-        body.practice-room-page .practice-room__control-label {
-            font-size: 0.75rem;
-            font-weight: 800;
-            letter-spacing: 0.08em;
-            color: var(--practice-accent);
-            min-width: 3.5rem;
-            text-align: center;
-            flex-shrink: 0;
-        }
-
-        body.practice-room-page .practice-room__ab-status {
-            display: flex;
-            flex-wrap: wrap;
-            gap: 0.75rem;
-            justify-content: center;
-            font-size: 0.78rem;
-            font-weight: 700;
-            color: rgba(244, 244, 244, 0.75);
-            font-variant-numeric: tabular-nums;
-        }
-
-        body.practice-room-page .practice-room__ab-status strong {
-            color: var(--practice-accent);
-        }
-
-        /* ── 歌曲卡片 ── */
-        body.practice-room-page .practice-room__song-grid {
-            display: grid;
-            grid-template-columns: repeat(3, 1fr);
-            gap: 1.15rem;
-            align-items: stretch;
-        }
-
-        body.practice-room-page .practice-room__song-card {
-            display: flex;
-            flex-direction: column;
-            background: var(--practice-surface);
-            border: 1px solid var(--practice-border);
-            border-radius: 16px;
-            padding: 1.35rem 1.25rem;
-            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.05);
-        }
-
-        body.practice-room-page .practice-room__song-card--featured {
-            border-color: var(--practice-accent);
-            box-shadow: 0 0 0 1px rgba(255, 204, 0, 0.2), var(--practice-shadow);
-        }
-
-        body.practice-room-page .practice-room__song-title {
-            font-size: 1.15rem;
-            font-weight: 900;
-            color: var(--practice-text-dark);
-            text-align: center;
-            margin-bottom: 0.5rem;
-        }
-
-        body.practice-room-page .practice-room__song-meta {
-            display: flex;
-            flex-wrap: wrap;
-            justify-content: center;
-            gap: 0.4rem;
-            margin-bottom: 0.85rem;
-        }
-
-        body.practice-room-page .practice-room__song-tag {
-            font-size: 0.72rem;
-            font-weight: 700;
-            padding: 0.2rem 0.55rem;
-            border-radius: 6px;
-            background: var(--practice-accent-soft);
-            color: var(--practice-text-dark);
-        }
-
-        body.practice-room-page .practice-room__song-focus {
-            font-size: 0.86rem;
-            color: var(--practice-text-muted);
-            line-height: 1.75;
-            text-align: left;
-            flex: 1;
-            margin-bottom: 0.85rem;
-        }
-
-        body.practice-room-page .practice-room__song-focus strong {
-            color: var(--practice-text-dark);
-            font-weight: 800;
-        }
-
-        body.practice-room-page .practice-room__song-status {
-            display: block;
-            text-align: center;
-            font-size: 0.75rem;
-            font-weight: 700;
-            padding: 0.35rem 0.65rem;
-            border-radius: 999px;
-            background: rgba(255, 204, 0, 0.12);
-            color: var(--practice-text-dark);
-        }
-
-        body.practice-room-page .practice-room__song-status--soon {
-            background: rgba(255, 255, 255, 0.5);
-            color: var(--practice-text-muted);
-        }
-
-        body.practice-room-page .practice-room__song-link {
-            display: inline-flex;
-            align-items: center;
-            justify-content: center;
-            gap: 0.45rem;
-            min-height: 42px;
-            margin-bottom: 0.75rem;
-            padding: 0.55rem 0.9rem;
-            border: 1px solid var(--practice-accent);
-            border-radius: 999px;
-            color: var(--practice-text-dark);
-            text-decoration: none;
-            font-size: 0.78rem;
-            font-weight: 800;
-        }
-
-        body.practice-room-page .practice-room__song-link:hover {
-            background: var(--practice-accent-soft);
-        }
-
-        body.practice-room-page .practice-room__song-empty {
-            grid-column: 1 / -1;
-            margin: 0;
-            padding: 1.5rem;
-            border: 1px dashed var(--practice-border);
-            border-radius: 14px;
-            color: var(--practice-text-muted);
-            background: var(--practice-surface);
-            text-align: center;
-        }
-
-        /* ── 段落練習 ── */
-        body.practice-room-page .practice-room__section-panel {
-            background: var(--practice-surface);
-            border: 1px solid var(--practice-border);
-            border-radius: 18px;
-            padding: 1.75rem 1.5rem;
-            box-shadow: 0 4px 22px rgba(0, 0, 0, 0.05);
-        }
-
-        body.practice-room-page .practice-room__section-btns {
-            display: flex;
-            flex-wrap: wrap;
-            justify-content: center;
-            gap: 0.55rem;
-            margin-bottom: 1.5rem;
-        }
-
-        body.practice-room-page .practice-room__section-btn {
-            min-height: 44px;
-            padding: 0.5rem 1.1rem;
-            border: 1px solid var(--practice-border);
-            border-radius: 999px;
-            background: var(--practice-surface);
-            color: var(--practice-text-dark);
-            font-size: 0.85rem;
-            font-weight: 800;
-            font-family: inherit;
-            cursor: pointer;
-            transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
-            letter-spacing: 0.04em;
-        }
-
-        body.practice-room-page .practice-room__section-btn:hover {
-            background: var(--practice-accent-soft);
-        }
-
-        body.practice-room-page .practice-room__section-btn.is-active {
-            background: var(--practice-accent);
-            border-color: var(--practice-accent);
-            color: var(--practice-text-dark);
-        }
-
-        body.practice-room-page .practice-room__section-hint {
-            max-width: 560px;
-            margin: 0 auto;
-            text-align: center;
-            padding: 1.25rem 1.5rem;
-            background: var(--practice-surface-soft);
-            border-radius: 14px;
-            border: 1px dashed var(--practice-border);
-        }
-
-        body.practice-room-page .practice-room__section-hint-label {
-            display: block;
-            font-size: 0.78rem;
-            font-weight: 800;
-            letter-spacing: 0.1em;
-            color: var(--practice-text-dark);
-            margin-bottom: 0.5rem;
-        }
-
-        body.practice-room-page .practice-room__section-hint-text {
-            color: var(--practice-text-muted);
-            font-size: 0.92rem;
-            line-height: 1.85;
-            text-align: left;
-        }
-
-        /* ── 未來擴充 ── */
-        body.practice-room-page .practice-room__future-grid {
-            display: grid;
-            grid-template-columns: repeat(2, 1fr);
-            gap: 0.65rem 1.25rem;
-            max-width: 720px;
-            margin: 0 auto;
-        }
-
-        body.practice-room-page .practice-room__future-item {
-            display: flex;
-            align-items: flex-start;
-            gap: 0.55rem;
-            color: var(--practice-text-muted);
-            font-size: 0.88rem;
-            line-height: 1.6;
-            text-align: left;
-        }
-
-        body.practice-room-page .practice-room__future-item i {
-            color: var(--practice-accent);
-            margin-top: 0.15rem;
-            flex-shrink: 0;
-        }
-
-        /* ── 版權聲明 ── */
-        body.practice-room-page .practice-room__notice {
-            max-width: 720px;
-            margin: 0 auto;
-            padding: 1.25rem 1.5rem;
-            background: rgba(26, 26, 26, 0.04);
-            border: 1px solid rgba(255, 204, 0, 0.18);
-            border-radius: 12px;
-            font-size: 0.78rem;
-            color: var(--practice-text-muted);
-            line-height: 1.8;
-            text-align: left;
-        }
-
-        /* ── RWD ── */
-        @media (max-width: 767.98px) {
-            body.practice-room-page .practice-room {
-                padding: 1.75rem 1rem 2.5rem;
-            }
-
-            body.practice-room-page .practice-room__hall-grid {
-                grid-template-columns: 1fr;
-            }
-
-            body.practice-room-page .practice-room__song-grid {
-                grid-template-columns: 1fr;
-            }
-
-            body.practice-room-page .practice-room__future-grid {
-                grid-template-columns: 1fr;
-            }
-
-            body.practice-room-page .practice-room__player-wrap {
-                padding: 0.85rem;
-            }
-
-            body.practice-room-page .practice-room__btn {
-                font-size: 0.78rem;
-                padding: 0.45rem 0.7rem;
-            }
-        }
-
-        @media (min-width: 768px) and (max-width: 991.98px) {
-            body.practice-room-page .practice-room__song-grid {
-                grid-template-columns: repeat(2, 1fr);
-            }
-        }
-    </style>
-</head>
-
-<body class="practice-room-page">
-    <header class="inner-page-header">
-        <div class="header-inner site-header-inner">
-            <h1 class="main-title">水晶練習室</h1>
-            <div class="subtitle-wrap">
-                <span class="sub-title">CRYSTAL PRACTICE ROOM</span>
-            </div>
-        </div>
-    </header>
-
-    <nav class="portal-nav" aria-label="水晶男孩推廣部導覽" data-portal-nav></nav>
-
-    <canvas id="particles"></canvas>
-
-    <main class="practice-room">
-
-        <!-- ① Hero -->
-        <section class="practice-room__hero" aria-labelledby="practice-hero-title">
-            <span class="practice-room__hero-badge">SECHSKIES PRACTICE DEMO</span>
-            <h2 class="practice-room__hero-title" id="practice-hero-title">水晶練習室</h2>
-            <p class="practice-room__hero-en">Crystal Practice Room</p>
-            <p class="practice-room__hero-lead">
-                水晶練習室是<span class="mark_b mark_y">水晶男孩推廣部</span>底下的粉絲向練習工具，結合水晶熱舞社、水晶歌詞社與水晶嘻哈社概念，將歌曲、舞蹈、歌詞、Rap 與應援整理成可以反覆練習的互動頁面。第一版先以舞蹈影片練習與歌詞段落整理為主，未來可擴充唱歌、Rap、應援詞、錄音回放與練習紀錄。
-            </p>
-            <div class="practice-room__tag-row">
-                <span class="practice-room__tag"><i class="fa-solid fa-fire" aria-hidden="true"></i> 水晶熱舞社</span>
-                <span class="practice-room__tag"><i class="fa-solid fa-music" aria-hidden="true"></i> 水晶歌詞社</span>
-                <span class="practice-room__tag"><i class="fa-solid fa-microphone-lines" aria-hidden="true"></i> 水晶嘻哈社</span>
-                <span class="practice-room__tag"><i class="fa-solid fa-lightbulb" aria-hidden="true"></i> 應援練習</span>
-                <span class="practice-room__tag"><i class="fa-solid fa-star" aria-hidden="true"></i> SECHSKIES Practice</span>
-            </div>
-        </section>
-
-        <!-- ② 分館功能區 -->
-        <section class="practice-room__block" aria-labelledby="halls-title">
-            <h2 class="practice-room__block-title" id="halls-title">分館功能</h2>
-            <span class="practice-room__block-sub">FOUR PRACTICE HALLS</span>
-            <div class="practice-room__hall-grid">
-                <article class="practice-room__hall-card">
-                    <span class="practice-room__hall-icon" aria-hidden="true"><i class="fa-solid fa-person-running"></i></span>
-                    <h3 class="practice-room__hall-name">水晶熱舞社</h3>
-                    <p class="practice-room__hall-desc">以舞蹈影片為核心，支援鏡像、慢速播放、逐段練習與 A-B 循環，適合整理經典舞台、翻跳練習與應援舞蹈。</p>
-                </article>
-                <article class="practice-room__hall-card">
-                    <span class="practice-room__hall-icon" aria-hidden="true"><i class="fa-solid fa-book-open"></i></span>
-                    <h3 class="practice-room__hall-name">水晶歌詞社</h3>
-                    <p class="practice-room__hall-desc">整理歌曲段落、中文理解、韓文歌詞位置與跟唱提示，未來可加入羅馬拼音、逐句練唱與原唱開關。</p>
-                </article>
-                <article class="practice-room__hall-card">
-                    <span class="practice-room__hall-icon" aria-hidden="true"><i class="fa-solid fa-headphones"></i></span>
-                    <h3 class="practice-room__hall-name">水晶嘻哈社</h3>
-                    <p class="practice-room__hall-desc">針對 Rap 段落設計節奏、flow、咬字與慢速練習，未來可加入節拍器與錄音比較。</p>
-                </article>
-                <article class="practice-room__hall-card">
-                    <span class="practice-room__hall-icon" aria-hidden="true"><i class="fa-solid fa-hands-clapping"></i></span>
-                    <h3 class="practice-room__hall-name">水晶應援社</h3>
-                    <p class="practice-room__hall-desc">整理演唱會應援詞、口號、手燈節奏與粉絲活動資訊，讓新加入的 Yellowkies 可以更快跟上。</p>
-                </article>
-            </div>
-        </section>
-
-        <!-- ③ 練習播放器 -->
-        <section class="practice-room__block" aria-labelledby="player-title">
-            <h2 class="practice-room__block-title" id="player-title">舞蹈練習播放器</h2>
-            <span class="practice-room__block-sub">DANCE PRACTICE PLAYER</span>
-            <div class="practice-room__player-wrap" id="practice-player">
-                <div class="practice-room__video-stage">
-                    <div class="practice-room__video-inner" id="video-inner">
-                        <video class="practice-room__video" id="practice-video" playsinline preload="metadata"
-                            aria-label="水晶熱舞社練習影片">
-                            <!-- 請將合法來源的練習影片 src 放在此處 -->
-                        </video>
-                    </div>
-                    <div class="practice-room__video-placeholder" id="video-placeholder">
-                        <i class="fa-solid fa-video" aria-hidden="true"></i>
-                        <p>請放入水晶熱舞社練習影片</p>
-                        <span>支援本機或合法來源影片替換</span>
-                    </div>
-                </div>
-
-                <div class="practice-room__controls">
-                    <div class="practice-room__progress-row">
-                        <span class="practice-room__time" id="time-current">0:00</span>
-                        <div class="practice-room__progress" id="progress-bar" role="slider"
-                            aria-label="播放進度" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"
-                            tabindex="0">
-                            <div class="practice-room__progress-ab" id="progress-ab"></div>
-                            <div class="practice-room__progress-fill" id="progress-fill"></div>
-                        </div>
-                        <span class="practice-room__time" id="time-total">0:00</span>
-                    </div>
-
-                    <div class="practice-room__btn-row">
-                        <button type="button" class="practice-room__btn practice-room__btn--primary" id="btn-play"
-                            aria-label="播放或暫停">
-                            <i class="fa-solid fa-play" id="icon-play" aria-hidden="true"></i>
-                            <span id="label-play">播放</span>
-                        </button>
-                        <button type="button" class="practice-room__btn" id="btn-rewind" aria-label="倒退 5 秒">
-                            <i class="fa-solid fa-backward-step" aria-hidden="true"></i> -5s
-                        </button>
-                        <button type="button" class="practice-room__btn" id="btn-forward" aria-label="前進 5 秒">
-                            <i class="fa-solid fa-forward-step" aria-hidden="true"></i> +5s
-                        </button>
-                    </div>
-
-                    <div class="practice-room__control-group">
-                        <span class="practice-room__control-label">鏡像</span>
-                        <button type="button" class="practice-room__btn" id="btn-mirror" aria-pressed="false">
-                            <i class="fa-solid fa-right-left" aria-hidden="true"></i> OFF
-                        </button>
-                    </div>
-
-                    <div class="practice-room__control-group">
-                        <span class="practice-room__control-label">速度</span>
-                        <button type="button" class="practice-room__btn" data-speed="0.5">0.5x</button>
-                        <button type="button" class="practice-room__btn" data-speed="0.75">0.75x</button>
-                        <button type="button" class="practice-room__btn is-active" data-speed="1">1x</button>
-                        <button type="button" class="practice-room__btn" data-speed="1.25">1.25x</button>
-                    </div>
-
-                    <div class="practice-room__control-group">
-                        <span class="practice-room__control-label">A-B</span>
-                        <button type="button" class="practice-room__btn" id="btn-set-a">設 A</button>
-                        <button type="button" class="practice-room__btn" id="btn-set-b">設 B</button>
-                        <button type="button" class="practice-room__btn" id="btn-loop" aria-pressed="false">循環 OFF</button>
-                        <button type="button" class="practice-room__btn" id="btn-clear-ab">清除</button>
-                    </div>
-
-                    <div class="practice-room__ab-status" id="ab-status">
-                        <span>A 點：<strong id="ab-a">未設定</strong></span>
-                        <span>B 點：<strong id="ab-b">未設定</strong></span>
-                    </div>
-                </div>
-            </div>
-        </section>
-
-        <!-- ④ 練舞清單 -->
-        <section class="practice-room__block" aria-labelledby="songs-title">
-            <h2 class="practice-room__block-title" id="songs-title">練舞清單</h2>
-            <span class="practice-room__block-sub">DANCE PRACTICE LIST</span>
-            <div class="practice-room__song-grid" data-dance-practice-list aria-live="polite">
-                <p class="practice-room__song-empty">正在載入練舞清單…</p>
-            </div>
-        </section>
-
-        <!-- ⑤ 歌詞段落示意 -->
-        <section class="practice-room__block" aria-labelledby="sections-title">
-            <h2 class="practice-room__block-title" id="sections-title">段落練習</h2>
-            <span class="practice-room__block-sub">SECTION PRACTICE</span>
-            <div class="practice-room__section-panel">
-                <div class="practice-room__section-btns" role="tablist" aria-label="歌曲段落">
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-                    <button type="button" class="practice-room__section-btn" role="tab"
-                        aria-selected="false" data-section="verse">Verse</button>
-                    <button type="button" class="practice-room__section-btn" role="tab"
-                        aria-selected="false" data-section="chorus">Chorus</button>
-                    <button type="button" class="practice-room__section-btn" role="tab"
-                        aria-selected="false" data-section="rap">Rap</button>
-                    <button type="button" class="practice-room__section-btn" role="tab"
-                        aria-selected="false" data-section="danceBreak">Dance Break</button>
-                    <button type="button" class="practice-room__section-btn" role="tab"
-                        aria-selected="false" data-section="ending">Ending</button>
-                </div>
-                <div class="practice-room__section-hint" role="tabpanel" id="section-hint-panel">
-                    <span class="practice-room__section-hint-label" id="section-hint-label">Intro</span>
-                    <p class="practice-room__section-hint-text" id="section-hint-text">先熟悉站位與進場節奏。</p>
-                </div>
-            </div>
-        </section>
-
-        <!-- ⑥ 未來擴充 -->
-        <section class="practice-room__block" aria-labelledby="future-title">
-            <h2 class="practice-room__block-title" id="future-title">未來擴充</h2>
-            <span class="practice-room__block-sub">COMING SOON</span>
-            <ul class="practice-room__future-grid">
-                <li class="practice-room__future-item"><i class="fa-regular fa-circle-check" aria-hidden="true"></i>韓文歌詞 / 羅馬拼音 / 中文理解</li>
-                <li class="practice-room__future-item"><i class="fa-regular fa-circle-check" aria-hidden="true"></i>Rap 節拍器</li>
-                <li class="practice-room__future-item"><i class="fa-regular fa-circle-check" aria-hidden="true"></i>應援詞練習</li>
-                <li class="practice-room__future-item"><i class="fa-regular fa-circle-check" aria-hidden="true"></i>錄音回放</li>
-                <li class="practice-room__future-item"><i class="fa-regular fa-circle-check" aria-hidden="true"></i>錄影回放</li>
-                <li class="practice-room__future-item"><i class="fa-regular fa-circle-check" aria-hidden="true"></i>練習紀錄</li>
-                <li class="practice-room__future-item"><i class="fa-regular fa-circle-check" aria-hidden="true"></i>歌曲資料庫</li>
-                <li class="practice-room__future-item"><i class="fa-regular fa-circle-check" aria-hidden="true"></i>舞台版本比較</li>
-                <li class="practice-room__future-item"><i class="fa-regular fa-circle-check" aria-hidden="true"></i>30TH 應援企劃串接</li>
-            </ul>
-        </section>
-
-        <!-- 版權聲明 -->
-        <aside class="practice-room__notice" aria-label="版權與素材提醒">
-            本頁為粉絲向非商業作品集 Demo，第一版使用示意資料與可替換素材結構，不直接內建完整受版權保護的音源、MV 或歌詞。實際素材請以合法來源或自行製作內容替換。
-        </aside>
-
-    </main>
-
-    <footer>
-        <p>SECHSKIES Fanpage &copy; 2026 - 黃色氣球永遠飄揚</p>
-        <a href="https://jekkinoopy.github.io/Portfolio/" class="studio-link" target="_blank" rel="noopener noreferrer">
-            Design by <span class="mark_b">Jekkinoopy Studio</span>
-        </a>
-    </footer>
-
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-                verse: { label: 'Verse', text: '注意主唱與和聲輪替，把握段落情緒轉折。' },
-                chorus: { label: 'Chorus', text: '適合搭配鏡像與 0.75x 速度反覆練習。' },
-                rap: { label: 'Rap', text: '未來可加入水晶嘻哈社的節拍與咬字練習。' },
-                danceBreak: { label: 'Dance Break', text: '適合使用 A-B 循環拆動作。' },
-                ending: { label: 'Ending', text: '確認退場走位與收尾 pose，銜接全曲記憶。' }
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-</html>