From dde96bca65b120a93b0f8d0eea7bdf0f5d2b0609 Mon Sep 17 00:00:00 2001
From: Tunghsiao Liu <t@sparanoid.com>
Date: Wed, 13 Jul 2016 02:24:30 +0800
Subject: [PATCH] feat(style): tweak typography for San Francisco for macOS
 with OpenType features support

---
 _app/assets/themes/curtana/_less/reset.less     | 1 +
 _app/assets/themes/curtana/_less/variables.less | 6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/_app/assets/themes/curtana/_less/reset.less b/_app/assets/themes/curtana/_less/reset.less
index 5d90a02e3..88c3b96fb 100644
--- a/_app/assets/themes/curtana/_less/reset.less
+++ b/_app/assets/themes/curtana/_less/reset.less
@@ -31,6 +31,7 @@ body {
   color: @text-color;
   background: @background-color;
   transition: all .2s ease;
+  font-feature-settings: @font-features;
 
   @media (max-width: @breakpoint-md) {
     .padding-offset(@space-md, @space-md);
diff --git a/_app/assets/themes/curtana/_less/variables.less b/_app/assets/themes/curtana/_less/variables.less
index aad8d51c7..625ef7e15 100644
--- a/_app/assets/themes/curtana/_less/variables.less
+++ b/_app/assets/themes/curtana/_less/variables.less
@@ -3,13 +3,15 @@
 // --------------------------------------------------
 
 // Typography
+@fontstack-prefix: -apple-system, BlinkMacSystemFont;
 @fontstack-sans-serif: "Helvetica Neue", Arial, sans-serif;
 @fontstack-serif: Georgia, serif;
 @fontstack-monospace: Menlo, Consolas, monospace;
-@fontstack-default: @fontstack-sans-serif;
+@fontstack-default: @fontstack-prefix, @fontstack-sans-serif;
 @font-size: 1.6vw;
+@font-features: "case", "ss01", "ss02";
 @line-height: (20 / 14); // ~ 1.428571429
-@heading-letter-spacing: -.06em;
+@heading-letter-spacing: -.04em;
 
 // Layout
 @breakpoint-lg: 1600px;