diff --git a/public/index.php b/public/index.php
index 1cd0daa..fa36f98 100644
--- a/public/index.php
+++ b/public/index.php
@@ -98,19 +98,24 @@
 			background: var(--bg, #86c9a8);
 		}
 		#hinamizawa-used {
-			--value: <?php echo $hinamizawa_percent_used ?>;
+			--value: <?php echo ($hinamizawa_percent ? $hinamizawa_percent : 0); ?>;
+			--over50: <?php echo ($hinamizawa_percent > 50 ? '1' : '0'); ?>
 		}
 		#maebara-used {
-			--value: <?php echo $maebara_percent_used ?>;
+			--value: <?php echo ($maebara_percent ? $maebara_percent : 0); ?>;
+			--over50: <?php echo ($maebara_percent > 50 ? '1' : '0'); ?>
 		}
 		#houjou-used {
-			--value: <?php echo $houjou_percent_used ?>;
+			--value: <?php echo ($houjou_percent ? $houjou_percent : 0); ?>;
+			--over50: <?php echo ($houjou_percent > 50 ? '1' : '0'); ?>
 		}
 		#ryuuguu-used {
-			--value: <?php echo $ryuuguu_percent_used ?>;
+			--value: <?php echo ($ryuuguu_percent ? $ryuuguu_percent : 0); ?>;
+			--over50: <?php echo ($ryuuguu_percent > 50 ? '1' : '0'); ?>
 		}
 		#sonozaki-used {
-			--value: <?php echo $sonozaki_percent_used ?>;
+			--value: <?php echo ($sonozaki_percent ? $sonozaki_percent : 0); ?>;
+			--over50: <?php echo ($sonozaki_percent > 50 ? '1' : '0'); ?>
 		}
 	</style>
 </head>