diff --git a/src/css/custom.css b/src/css/custom.css
index 2bc6a4c..a4ba5d9 100644
--- a/src/css/custom.css
+++ b/src/css/custom.css
@@ -17,14 +17,35 @@
   --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.1);
 }
 
-/* For readability concerns, you should choose a lighter palette in dark mode. */
+/* Nord dark theme — https://www.nordtheme.com */
 [data-theme='dark'] {
-  --ifm-color-primary: #25c2a0;
-  --ifm-color-primary-dark: #21af90;
-  --ifm-color-primary-darker: #1fa588;
-  --ifm-color-primary-darkest: #1a8870;
-  --ifm-color-primary-light: #29d5b0;
-  --ifm-color-primary-lighter: #32d8b4;
-  --ifm-color-primary-lightest: #4fddbf;
-  --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.3);
+  /* Frost — основной акцент (nord8) */
+  --ifm-color-primary: #88c0d0;
+  --ifm-color-primary-dark: #76b5c7;
+  --ifm-color-primary-darker: #6dafc3;
+  --ifm-color-primary-darkest: #5e81ac;
+  --ifm-color-primary-light: #95c8d8;
+  --ifm-color-primary-lighter: #9ecfdd;
+  --ifm-color-primary-lightest: #b4dce8;
+
+  /* Polar Night — фоны */
+  --ifm-background-color: #2e3440;
+  --ifm-background-surface-color: #3b4252;
+  --ifm-navbar-background-color: #2e3440;
+  --ifm-footer-background-color: #2e3440;
+
+  /* Snow Storm — текст */
+  --ifm-font-color-base: #eceff4;
+  --ifm-font-color-secondary: #d8dee9;
+
+  /* Emphasis scale: Polar Night → Snow Storm */
+  --ifm-color-emphasis-100: #3b4252;
+  --ifm-color-emphasis-200: #434c5e;
+  --ifm-color-emphasis-300: #4c566a;
+  --ifm-color-emphasis-400: #7b8ba0;
+  --ifm-color-emphasis-500: #d8dee9;
+  --ifm-color-emphasis-600: #e5e9f0;
+  --ifm-color-emphasis-700: #eceff4;
+
+  --docusaurus-highlighted-code-line-bg: rgba(136, 192, 208, 0.15);
 }