Index page fix.

.gitignore

@@ -1,3 +1,4 @@
+v8js.zip
 .idea
 .php_cs.cache
 app/.config.php

app/controllers/index.php

@@ -252,16 +252,37 @@ $gk28daysLeft  = max(0, (int)floor(($gk28Ts - $todayMidnight) / 86400));
 
             <!-- 内容层 -->
             <div style="position:relative;z-index:1;">
+                <style>
+                    /* 竖排文字：逐字竖直排列，不依赖 writing-mode:vertical-rl（Firefox 下该属性会把汉字压扁/渲染成空白） */
+                    .wyoj-vtext {
+                        display: flex;
+                        flex-direction: column;
+                        align-items: center;
+                        font-size: 1.5rem;
+                        font-weight: bold;
+                        line-height: 1;
+                    }
+                    .wyoj-vtext>span {
+                        display: block;
+                        line-height: 1.3; /* 等价于原来的 letter-spacing: 0.3em */
+                    }
+                </style>
+                <?php
+                    // 把一段文字拆成"每字一个 span"，交给上面的 flex 纵向排列
+                    $wyoj_vtext = function ($text) {
+                        $html = '';
+                        foreach (preg_split('//u', $text, -1, PREG_SPLIT_NO_EMPTY) as $ch) {
+                            $html .= '<span>' . htmlspecialchars($ch, ENT_QUOTES, 'UTF-8') . '</span>';
+                        }
+                        return $html;
+                    };
+                ?>
                 <div class="d-flex justify-content-center align-items-center">
-                    <div style="writing-mode:vertical-rl;font-size:1.5rem;font-weight:bold;letter-spacing:0.3em;line-height:1;">
-                        <?= $monthText ?>
-                    </div>
+                    <div class="wyoj-vtext"><?= $wyoj_vtext($monthText) ?></div>
                     <div class="mx-4" style="font-size:5rem;font-weight:600;line-height:1;">
                         <?= $dayNum ?>
                     </div>
-                    <div style="writing-mode:vertical-rl;font-size:1.5rem;font-weight:bold;letter-spacing:0.3em;line-height:1;">
-                        <?= $weekText ?>
-                    </div>
+                    <div class="wyoj-vtext"><?= $wyoj_vtext($weekText) ?></div>
                 </div>
                     <div class="text-center mt-4" style="font-size:1rem;letter-spacing:0.05em;">
                         <?php if ($daysLeft > 0): ?>