Refactored layout styles:

1. Now iPad vertical gets a collapsed sidebar with columns
2. Moved sidebar toggler styles from layout to sidebar/base
3. Added body class .sidebar-footer to support an always collapsed sidebar
4. Added $indented-lists (bool) for easily setting list indent preferences
5. Removed no-sidebar checking from sidebar-toggler, handled it through css.

.themes/classic/sass/_base.scss

@@ -1,5 +1,5 @@
 @import "base/utilities";
 @import "base/solarized";
 @import "base/theme";
-@import "base/layout";
 @import "base/typography";
+@import "base/layout";

.themes/classic/sass/base/_layout.scss

@@ -12,8 +12,30 @@ $sidebar-pad-medium: 15px !default;
 $sidebar-pad-wide: 20px !default;
 $sidebar-width-wide: 300px !default;
 
+$indented-lists: false !default;
+
 .group { @include pie-clearfix; }
 
+@mixin collapse-sidebar {
+  float: none;
+  width: auto;
+  clear: left;
+  margin: 0;
+  padding: 0 $pad-medium 1px;
+  background-color: lighten($sidebar-bg, 2);
+  border-top: 1px solid lighten($sidebar-border, 4);
+  section {
+    &.odd, &.even { float: left; width: 48%; }
+    &.odd { margin-left: 0; }
+    &.even { margin-left: 4%; }
+  }
+  &.thirds section {
+    width: 30%;
+    margin-left: 5%;
+    &.first { margin-left: 0; }
+  }
+}
+
 body {
   -webkit-text-size-adjust: none;
   max-width: $max-width;
@@ -43,23 +65,31 @@ body {
   }
 }
 
-#content {
+#content { > div, > article { width: 100%; }}
-  > div, > article { width: 100%; }
+
-  > aside {
+aside[role=sidebar] {
   float: none;
   padding: 0 $pad-min 1px;
   background-color: lighten($sidebar-bg, 2);
   border-top: 1px solid $sidebar-border;
-  }
+  @extend .group;
 }
 
+.toggle-sidebar { &, .no-sidebar & { display: none; }}
+
+body.sidebar-footer {
+  @media only screen and (min-width: 750px) {
+    aside[role=sidebar]{ @include collapse-sidebar; }
+  }
+  #content { margin-right: 0px; }
   .toggle-sidebar { display: none; }
+}
 
 @media only screen and (min-width: 550px) {
   body > header { font-size: 1em; }
-  #content aside {
-    @extend .group;
 }
+@media only screen and (min-width: 750px) {
+  aside[role=sidebar] { @include collapse-sidebar; }
 }
 @media only screen and (min-width: 768px) {
   body { -webkit-text-size-adjust: auto; }
@@ -73,89 +103,28 @@ body {
     @extend .group;
     margin-right: $sidebar-width-medium;
     position: relative;
+    .no-sidebar & { margin-right: 0; }
+    .collapse-sidebar & { margin-right: 20px; }
     > div, > article {
       padding-top: $pad-medium/2;
       padding-bottom: $pad-medium/2;
       float: left;
     }
-    > aside {
+  }
+  aside[role=sidebar] {
+    @extend .group;
     width: $sidebar-width-medium - $sidebar-pad-medium*2;
     padding: 0 $sidebar-pad-medium $sidebar-pad-medium;
     background: none;
+    clear: none;
     float: left;
     margin: 0 -100% 0 0;
     section {
       width: auto; margin-left: 0;
       &.odd, &.even { float: none; width: auto; margin-left: 0; }
     }
-    }
     .collapse-sidebar & {
-      margin-right: 20px;
+      @include collapse-sidebar;
-      > aside {
-        float: none;
-        clear: left;
-        width: auto;
-        margin: 0;
-        padding: 0 $pad-medium 1px;
-        background-color: lighten($sidebar-bg, 2);
-        border-top: 1px solid lighten($sidebar-border, 4);
-        section {
-          &.odd, &.even { float: left; width: 48%; }
-          &.odd { margin-left: 0; }
-          &.even { margin-left: 4%; }
-        }
-      }
-      > aside.thirds section {
-        width: 30%;
-        margin-left: 5%;
-        &.first { margin-left: 0; }
-      }
-    }
-  }
-  .toggle-sidebar {
-    outline: none;
-    position: absolute; right: -10px; top: 0; bottom: 0;
-    display: inline-block;
-    text-decoration: none;
-    color: mix($text-color-light, $sidebar-bg);
-    width: 9px;
-    cursor: pointer;
-    &:hover {
-      background: mix($sidebar-border, $sidebar-bg);
-      @include background(linear-gradient(left, rgba($sidebar-border, .5), rgba($sidebar-border, 0)));
-    }
-    &:after {
-      position: absolute; right: -11px; top: 0;
-      width: 20px;
-      font-size: 1.2em;
-      line-height: 1.1em;
-      padding-bottom: .15em;
-      @include border-bottom-right-radius(.3em);
-      text-align: center;
-      background: $main-bg $noise-bg;
-      border-bottom: 1px solid $sidebar-border;
-      border-right: 1px solid $sidebar-border;
-      content: "\00BB";
-      text-indent: -1px;
-    }
-    .collapse-sidebar & {
-      text-indent: 0px;
-      right: -20px;
-      width: 19px;
-      &:hover {
-        background: mix($sidebar-border, $sidebar-bg);
-      }
-      &:after {
-        border-left: 1px solid $sidebar-border;
-        text-shadow: #fff 0 1px;
-        content: "\00AB";
-        left: 0px; right: 0;
-        text-align: center;
-        text-indent: 0;
-        border: 0;
-        border-right-width: 0;
-        background: none;
-      }
     }
   }
 }
@@ -168,13 +137,19 @@ body {
       padding-top: $pad-wide/2;
       padding-bottom: $pad-wide/2;
     }
-    > aside {
+  }
+  aside[role=sidebar] {
     width: $sidebar-width-wide - $sidebar-pad-wide*2;
     padding: 1.2em $sidebar-pad-wide $sidebar-pad-wide;
-    }
+    .collapse-sidebar & {
-    .collapse-sidebar & aside {
       padding: { left: $pad-wide; right: $pad-wide; }
       @extend .group;
     }
   }
 }
+
+@if $indented-lists == false {
+  @media only screen and (min-width: 768px) {
+    ul, ol { margin-left: 0; }
+  }
+}

.themes/classic/sass/base/_typography.scss

@@ -55,10 +55,15 @@ h6, section h5, section section h4, section section section h3 {
 }
 p, blockquote, ul, ol { margin-bottom: 1.5em; }
 
-ul{ list-style-type: circle; }
+ul { list-style-type: disc;
+  ul { list-style-type: circle;
+    ul { list-style-type: square; }}}
 
-ol{ list-style-type: decimal; ol { list-style-type: lower-alpha; } }
+ol { list-style-type: decimal;
-ul ul, ol ol { margin-left: 1.75em; }
+  ol { list-style-type: lower-alpha;
+    ol { list-style-type: lower-roman; }}}
+
+ul, ol { &, ul, ol { margin-left: 1.3em; }}
 
 strong { font-weight: bold; }
 

.themes/classic/sass/custom/_layout.scss

@@ -2,6 +2,7 @@
 // To give it a try, uncomment some of the lines below, make changes, rebuild your blog, and see how it works.
 
 //$max-width: 1350px;
+//$indented-lists: true;
 
 // Padding used for layout margins
 //$pad-min: 18px;

.themes/classic/sass/custom/_styles.scss

@@ -1,7 +1,2 @@
 // This File is imported last, and will override other styles in the cascade
 // Add styles here to make changes without digging in too much
-
-// For example if you want indented lists on all screen sizes uncomment the following lines
-// #content article {
-//  ul, ol { margin-left: 1.4em; }
-// }

.themes/classic/sass/partials/_blog.scss

@@ -1,10 +1,6 @@
 article {
   overflow: hidden;
   padding-top: 1em;
-  ul, ol { margin-left: 1.4em; }
-  @media only screen and (min-width: 768px) {
-    ul, ol { margin-left: 0; }
-  }
   header {
     position: relative;
     padding-top: 2em;
@@ -35,9 +31,9 @@ article {
   h2 {
     padding-top: 0.8em;
     background: $img-border top left repeat-x;
-    .entry-content &:first-child { padding-top: 0; }
-    &:first-child { background: none; }
   }
+  .entry-content & h2:first-child, header + h2 { padding-top: 0; }
+  h2:first-child, header + h2 { background: none; }
   .feature {
     padding-top: .5em;
     margin-bottom: 1em;
@@ -90,8 +86,10 @@ article {
 
 }
 article + article {
+  .blog-index & {
     background: $img-border top left repeat-x;
   }
+}
 #content .blog-index {
   padding: { top: 0; bottom: 0; }
   article { padding-top: 2em; }

.themes/classic/sass/partials/_syntax.scss

@@ -175,6 +175,9 @@ pre, .highlight, .gist-highlight {
 
 .highlight code { @extend .pre-code; background: #000;}
 figure[role=code] {
+  background: none;
+  padding: 0;
+  border: 0;
   margin-bottom: 1.5em;
   figcaption {
     position: relative;

.themes/classic/sass/partials/sidebar/_base.scss

@@ -21,6 +21,7 @@ aside[role=sidebar] {
   }
   ul {
     margin-bottom: 0.5em;
+    margin-left: 0;
   }
   li {
     list-style: none;
@@ -47,3 +48,52 @@ aside[role=sidebar] {
     color: $sidebar-link-color-subdued-hover;
   }
 }
+
+@media only screen and (min-width: 768px) {
+  .toggle-sidebar {
+    outline: none;
+    position: absolute; right: -10px; top: 0; bottom: 0;
+    display: inline-block;
+    text-decoration: none;
+    color: mix($text-color-light, $sidebar-bg);
+    width: 9px;
+    cursor: pointer;
+    &:hover {
+      background: mix($sidebar-border, $sidebar-bg);
+      @include background(linear-gradient(left, rgba($sidebar-border, .5), rgba($sidebar-border, 0)));
+    }
+    &:after {
+      position: absolute; right: -11px; top: 0;
+      width: 20px;
+      font-size: 1.2em;
+      line-height: 1.1em;
+      padding-bottom: .15em;
+      @include border-bottom-right-radius(.3em);
+      text-align: center;
+      background: $main-bg $noise-bg;
+      border-bottom: 1px solid $sidebar-border;
+      border-right: 1px solid $sidebar-border;
+      content: "\00BB";
+      text-indent: -1px;
+    }
+    .collapse-sidebar & {
+      text-indent: 0px;
+      right: -20px;
+      width: 19px;
+      &:hover {
+        background: mix($sidebar-border, $sidebar-bg);
+      }
+      &:after {
+        border-left: 1px solid $sidebar-border;
+        text-shadow: #fff 0 1px;
+        content: "\00AB";
+        left: 0px; right: 0;
+        text-align: center;
+        text-indent: 0;
+        border: 0;
+        border-right-width: 0;
+        background: none;
+      }
+    }
+  }
+}