diff --git a/sb/assets/css/RobotoCondensed-Italic-VariableFont_wght.ttf b/sb/assets/css/RobotoCondensed-Italic-VariableFont_wght.ttf
new file mode 100644
index 0000000..52748d6
Binary files /dev/null and b/sb/assets/css/RobotoCondensed-Italic-VariableFont_wght.ttf differ
diff --git a/sb/assets/css/RobotoCondensed-VariableFont_wght.ttf b/sb/assets/css/RobotoCondensed-VariableFont_wght.ttf
new file mode 100644
index 0000000..a5f645b
Binary files /dev/null and b/sb/assets/css/RobotoCondensed-VariableFont_wght.ttf differ
diff --git a/sb/assets/css/custom.css b/sb/assets/css/custom.css
new file mode 100644
index 0000000..24111de
--- /dev/null
+++ b/sb/assets/css/custom.css
@@ -0,0 +1,51 @@
+@font-face {
+    font-family: 'Roboto Condensed';
+    src: url('RobotoCondensed-VariableFont_wght.ttf') format('truetype');
+    font-weight: normal;
+    font-style: normal;
+}
+@font-face {
+    font-family: 'Roboto Condensed Italic';
+    src: url('RobotoCondensed-Italic-VariableFont_wght.ttf') format('truetype');
+    font-weight: normal;
+    font-style: italic;
+}
+
+body {
+    font-family: 'Roboto Condensed', sans-serif;
+    font-size: 18px;
+    line-height: 1.6;
+    word-break: break-word;
+    background: var(--theme);
+}
+
+:root {
+    --gap: 24px;
+    --content-gap: 20px;
+    --nav-width: 1024px;
+    --main-width: 720px;
+    --header-height: 60px;
+    --footer-height: 60px;
+    --radius: 8px;
+    --theme: rgb(255, 255, 255);
+    --entry: rgb(255, 255, 255);
+    --primary: #203a8f;
+    --secondary: #ffa500;
+    --tertiary: rgb(214, 214, 214);
+    --content: #333;
+    --code-block-bg: #771133;
+    --code-bg: #f0f8ff;
+    --border: #d3d3d3;
+}
+
+.dark {
+    --theme: rgb(29, 30, 32);
+    --entry: rgb(46, 46, 51);
+    --primary: rgb(218, 218, 219);
+    --secondary: rgb(155, 156, 157);
+    --tertiary: rgb(65, 66, 68);
+    --content: rgb(196, 196, 197);
+    --code-block-bg: rgb(46, 46, 51);
+    --code-bg: rgb(55, 56, 62);
+    --border: rgb(51, 51, 51);
+}