russian: add font

Css/main.css

@@ -39,6 +39,11 @@
 	src: url(../Fonts/Orbitron Medium.woff2) format('woff');
 }
 
+@font-face {
+	font-family: PTSans;
+	src: url(../Fonts/PTSans.woff2) format('woff');
+}
+
 /*@font-face {
 	font-family: SourceSansVariable-Roman;
 	src: url(../Fonts/SourceSansVariable-Roman.woff2) format('woff');
@@ -77,6 +82,8 @@ body { margin: 0; height: 100%; }
 
 #text-container.jpn { font-family: 'FOT-RodinNTLGPro'; }
 
+#text-container.rus { font-family: 'PTSans'; }
+
 #text-container #fullscreen-button { position: absolute; top: 0.5rem; left: 0.5rem; font-size: 30px; line-height: 30px; opacity: 0.35; z-index: 11; }
 
 #text-container #title { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; font-size: 20px; transition: opacity 0.3s; cursor: default; user-select: none; }
@@ -160,4 +167,4 @@ body { margin: 0; height: 100%; }
 @media screen and (max-height: 600px) {
 	#mission-modal #mission-detail { display: none; }
 	#mission-modal #mission-icon { display: block; max-height: 20%; margin: 10px 0 10px 0; object-fit: contain; }
-}
+}