diff --git a/frontend/__snapshots__/components-command-bar--actions--dark.png b/frontend/__snapshots__/components-command-bar--actions--dark.png
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index 4d1e6546cad32..b953663cb43ea 100644
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index 31cb858d40508..b21fdc8a2fe88 100644
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diff --git a/frontend/__snapshots__/scenes-other-billing-v2--billing-unsubscribe-modal-data-pipelines--dark.png b/frontend/__snapshots__/scenes-other-billing-v2--billing-unsubscribe-modal-data-pipelines--dark.png
index 8af57a632597d..441e34109f7a1 100644
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diff --git a/frontend/__snapshots__/scenes-other-billing-v2--billing-unsubscribe-modal-data-pipelines--light.png b/frontend/__snapshots__/scenes-other-billing-v2--billing-unsubscribe-modal-data-pipelines--light.png
index 57711a72c77c7..709cceb9886a7 100644
Binary files a/frontend/__snapshots__/scenes-other-billing-v2--billing-unsubscribe-modal-data-pipelines--light.png and b/frontend/__snapshots__/scenes-other-billing-v2--billing-unsubscribe-modal-data-pipelines--light.png differ
diff --git a/frontend/src/exporter/Exporter.scss b/frontend/src/exporter/Exporter.scss
index df0d456df55d7..76f92199f5689 100644
--- a/frontend/src/exporter/Exporter.scss
+++ b/frontend/src/exporter/Exporter.scss
@@ -1,9 +1,7 @@
 @import '../styles/mixins';
 
 body.ExporterBody {
-    &.posthog-3000 {
-        overflow: initial;
-    }
+    overflow: initial;
 }
 
 .Exporter {
diff --git a/frontend/src/layout/navigation-3000/components/KeyboardShortcut.scss b/frontend/src/layout/navigation-3000/components/KeyboardShortcut.scss
index f2796b41f109e..74965e73091cc 100644
--- a/frontend/src/layout/navigation-3000/components/KeyboardShortcut.scss
+++ b/frontend/src/layout/navigation-3000/components/KeyboardShortcut.scss
@@ -8,21 +8,17 @@
     justify-content: center;
     min-width: 1.25rem;
     height: 1.25rem;
-    padding: 0 0.1875rem;
+    padding: 0.125rem 0.25rem;
+    font-size: 0.75rem;
     color: var(--default);
     text-transform: capitalize;
     user-select: none;
     background: var(--accent-3000);
+    border-color: var(--secondary-3000-button-border-hover);
     border-width: 1px;
+    border-bottom-width: 2px;
     border-radius: 0.25rem;
 
-    .posthog-3000 & {
-        padding: 0.125rem 0.25rem;
-        font-size: 0.75rem;
-        border-color: var(--secondary-3000-button-border-hover);
-        border-bottom-width: 2px;
-    }
-
     .KeyboardShortcut--muted > & {
         color: var(--muted);
         background: none;
diff --git a/frontend/src/lib/components/CommandBar/index.scss b/frontend/src/lib/components/CommandBar/index.scss
index c42b01543f804..85e6f6422f177 100644
--- a/frontend/src/lib/components/CommandBar/index.scss
+++ b/frontend/src/lib/components/CommandBar/index.scss
@@ -1,4 +1,4 @@
-.CommandBar__input {
+.LemonInput.CommandBar__input {
     height: 2.75rem;
     padding-right: 0.375rem;
     padding-left: 0.75rem;
diff --git a/frontend/src/lib/components/CommandPalette/DebugCHQueries.tsx b/frontend/src/lib/components/CommandPalette/DebugCHQueries.tsx
index 71cac99c617fc..6a56553aae0d1 100644
--- a/frontend/src/lib/components/CommandPalette/DebugCHQueries.tsx
+++ b/frontend/src/lib/components/CommandPalette/DebugCHQueries.tsx
@@ -157,7 +157,6 @@ function DebugCHQueries(): JSX.Element {
                 dataSource={filteredQueries}
                 loading={queriesLoading}
                 loadingSkeletonRows={5}
-                size="small"
                 pagination={undefined}
             />
         </>
diff --git a/frontend/src/lib/components/DateFilter/RollingDateRangeFilter.scss b/frontend/src/lib/components/DateFilter/RollingDateRangeFilter.scss
index 244d3ccc5c711..6ccb132efdc5f 100644
--- a/frontend/src/lib/components/DateFilter/RollingDateRangeFilter.scss
+++ b/frontend/src/lib/components/DateFilter/RollingDateRangeFilter.scss
@@ -1,7 +1,7 @@
 .RollingDateRangeFilter {
     display: flex;
     align-items: center;
-    height: 2rem;
+    height: 1.6875rem;
     min-height: 2rem;
     padding: 1.25rem 0.5rem;
     font-size: 0.875rem;
@@ -11,10 +11,6 @@
     cursor: pointer;
     transition: background 0.3s ease;
 
-    .posthog-3000 & {
-        height: 1.6875rem;
-    }
-
     &:hover {
         background-color: var(--mid);
     }
@@ -40,69 +36,47 @@
     box-sizing: border-box;
     display: flex;
     align-items: center;
-    height: 2rem;
+    height: 1.6875rem;
     margin: 0;
     margin-right: 0.25rem;
     margin-left: 0.25rem;
-    line-height: 1.25rem;
+    line-height: 1.5rem;
     background-color: var(--bg-light);
     border: 1px solid var(--border);
     border-radius: var(--radius);
 
-    .posthog-3000 & {
-        height: 1.6875rem;
-        line-height: 1.5rem;
-    }
-
     .LemonInput {
         width: 3rem;
+        height: unset;
         min-height: 0;
         padding: 0;
         border: none;
 
-        .posthog-3000 & {
-            height: unset;
-        }
-
         input {
             text-align: center;
         }
     }
 
     .RollingDateRangeFilter__counter__step {
-        padding: 0.25rem;
-        margin: 0 0.25rem;
-        border-radius: var(--radius);
+        width: 1.25rem;
+        height: 100%;
+        padding: 0;
+        margin: 0;
+        text-align: center;
+        border-radius: calc(var(--radius) - 1px);
 
         &:first-child {
-            .posthog-3000 & {
-                border-top-right-radius: 0;
-                border-bottom-right-radius: 0;
-            }
+            border-top-right-radius: 0;
+            border-bottom-right-radius: 0;
         }
 
         &:last-child {
-            .posthog-3000 & {
-                border-top-left-radius: 0;
-                border-bottom-left-radius: 0;
-            }
-        }
-
-        .posthog-3000 & {
-            width: 1.25rem;
-            height: 100%;
-            padding: 0;
-            margin: 0;
-            text-align: center;
-            border-radius: calc(var(--radius) - 1px);
+            border-top-left-radius: 0;
+            border-bottom-left-radius: 0;
         }
 
         &:hover {
-            background-color: var(--primary-highlight);
-
-            .posthog-3000 & {
-                background-color: var(--accent-3000);
-            }
+            background-color: var(--accent-3000);
         }
     }
 }
diff --git a/frontend/src/lib/components/DatePicker.scss b/frontend/src/lib/components/DatePicker.scss
index 083127c9dff86..43ecd38624633 100644
--- a/frontend/src/lib/components/DatePicker.scss
+++ b/frontend/src/lib/components/DatePicker.scss
@@ -1,130 +1,101 @@
 .ant-picker {
+    color: var(--default);
+    background: var(--lemon-button-bg-color);
+    border-color: var(--secondary-3000-button-border);
     box-shadow: none !important;
-}
 
-.posthog-3000 {
-    .ant-picker {
+    .ant-picker-suffix {
         color: var(--default);
-        background: var(--lemon-button-bg-color);
-        border-color: var(--secondary-3000-button-border);
-
-        .ant-picker-suffix {
-            color: var(--default);
-        }
     }
 
-    .ant-picker:hover {
+    &:hover {
         border-color: var(--secondary-3000-button-border-hover);
     }
+}
 
-    .ant-picker-panel-container {
-        color: var(--default);
-        background: var(--bg-3000);
-        border: 1px solid var(--border);
+.ant-picker-panel-container {
+    color: var(--default);
+    background: var(--bg-3000);
+    border: 1px solid var(--border);
 
-        * {
-            border-color: var(--border);
-        }
+    * {
+        border-color: var(--border);
     }
+}
 
-    .ant-picker-time-panel-column > li.ant-picker-time-panel-cell-selected .ant-picker-time-panel-cell-inner {
-        background: var(--primary-highlight);
-    }
+.ant-picker-time-panel-column > li.ant-picker-time-panel-cell-selected .ant-picker-time-panel-cell-inner {
+    background: var(--primary-highlight);
 
-    .ant-picker-time-panel .ant-picker-time-panel-column:nth-child(3)::after {
-        // :HACKY: fix to keep the whole am/pm section in view
-        display: none;
+    [theme='dark'] & {
+        background: rgba(#f7a503, 0.4);
     }
+}
 
-    .ant-picker-cell .ant-picker-cell-inner {
-        border-radius: var(--radius);
-    }
+.ant-picker-time-panel .ant-picker-time-panel-column:nth-child(3)::after {
+    // :HACKY: fix to keep the whole am/pm section in view
+    display: none;
+}
 
-    .ant-picker-cell.ant-picker-cell-selected .ant-picker-cell-inner {
-        color: var(--default);
-        background: var(--primary-highlight);
-    }
+.ant-picker-cell .ant-picker-cell-inner {
+    border-radius: var(--radius);
+}
 
-    .ant-picker-cell.ant-picker-cell-today .ant-picker-cell-inner::before {
-        background: none;
-        border-color: var(--text-secondary-3000);
-    }
+.ant-picker-cell.ant-picker-cell-selected .ant-picker-cell-inner {
+    color: var(--default);
+    background: var(--primary-highlight);
 
-    .ant-picker-cell:hover:not(
-            .ant-picker-cell-selected,
-            .ant-picker-cell-range-start,
-            .ant-picker-cell-range-end,
-            .ant-picker-cell-range-hover-start,
-            .ant-picker-cell-range-hover-end
-        )
-        .ant-picker-cell-inner {
-        background: var(--secondary-3000);
+    [theme='dark'] & {
+        color: var(--default);
+        background: rgba(#f7a503, 0.4);
     }
+}
 
-    .ant-picker-cell:hover:not(.ant-picker-cell-in-view) .ant-picker-cell-inner,
-    .ant-picker-cell:hover:not(
-            .ant-picker-cell-today,
-            .ant-picker-cell-selected,
-            .ant-picker-cell-range-start,
-            .ant-picker-cell-range-end,
-            .ant-picker-cell-range-hover-start,
-            .ant-picker-cell-range-hover-end
-        )
-        .ant-picker-cell-inner,
-    .ant-picker-time-panel-column > li.ant-picker-time-panel-cell .ant-picker-time-panel-cell-inner:hover {
-        background: var(--secondary-3000);
-    }
+.ant-picker-cell.ant-picker-cell-today .ant-picker-cell-inner::before {
+    background: none;
+    border-color: var(--text-secondary-3000);
 
-    .ant-picker-footer .ant-btn-primary {
-        color: var(--primary);
-        text-shadow: none;
+    [theme='dark'] & {
         background: none;
-        border-color: var(--primary);
-        border-radius: 0.25rem;
-        box-shadow: none;
-    }
-
-    .ant-picker-footer .ant-btn-primary:not(:disabled):hover {
-        color: #fff;
-        background: var(--primary);
-    }
-
-    .ant-picker-footer .ant-picker-now-btn:hover {
-        color: var(--primary);
-    }
-
-    .ant-picker-ok .ant-btn-primary span {
-        text-transform: uppercase;
+        border-color: var(--text-secondary-3000);
     }
 }
 
-.posthog-3000[theme='dark'] {
-    .ant-picker-time-panel-column > li.ant-picker-time-panel-cell-selected .ant-picker-time-panel-cell-inner {
-        background: rgba(#f7a503, 0.4);
-    }
-
-    .ant-picker-cell:hover:not(
-            .ant-picker-cell-selected,
-            .ant-picker-cell-range-start,
-            .ant-picker-cell-range-end,
-            .ant-picker-cell-range-hover-start,
-            .ant-picker-cell-range-hover-end
-        )
-        .ant-picker-cell-inner {
+.ant-picker-cell:hover:not(.ant-picker-cell-in-view) .ant-picker-cell-inner,
+.ant-picker-cell:hover:not(
+        .ant-picker-cell-today,
+        .ant-picker-cell-selected,
+        .ant-picker-cell-range-start,
+        .ant-picker-cell-range-end,
+        .ant-picker-cell-range-hover-start,
+        .ant-picker-cell-range-hover-end
+    )
+    .ant-picker-cell-inner,
+.ant-picker-time-panel-column > li.ant-picker-time-panel-cell .ant-picker-time-panel-cell-inner:hover {
+    background: var(--secondary-3000);
+
+    [theme='dark'] & {
         background: var(--muted-3000-dark);
     }
+}
 
-    .ant-picker-cell.ant-picker-cell-selected .ant-picker-cell-inner {
-        color: var(--default);
-        background: rgba(#f7a503, 0.4);
-    }
+.ant-picker-footer .ant-btn-primary {
+    color: var(--primary);
+    text-shadow: none;
+    background: none;
+    border-color: var(--primary);
+    border-radius: 0.25rem;
+    box-shadow: none;
+}
 
-    .ant-picker-time-panel-column > li.ant-picker-time-panel-cell .ant-picker-time-panel-cell-inner:hover {
-        background: var(--muted-3000-dark);
-    }
+.ant-picker-footer .ant-btn-primary:not(:disabled):hover {
+    color: #fff;
+    background: var(--primary);
+}
 
-    .ant-picker-cell.ant-picker-cell-today .ant-picker-cell-inner::before {
-        background: none;
-        border-color: var(--text-secondary-3000);
-    }
+.ant-picker-footer .ant-picker-now-btn:hover {
+    color: var(--primary);
+}
+
+.ant-picker-ok .ant-btn-primary span {
+    text-transform: uppercase;
 }
diff --git a/frontend/src/lib/components/PropertiesTable/PropertiesTable.scss b/frontend/src/lib/components/PropertiesTable/PropertiesTable.scss
index d219c76b01c8f..d1f0ae7c48181 100644
--- a/frontend/src/lib/components/PropertiesTable/PropertiesTable.scss
+++ b/frontend/src/lib/components/PropertiesTable/PropertiesTable.scss
@@ -22,21 +22,15 @@
     }
 
     .editable {
-        text-decoration: underline dotted;
-        text-decoration-color: var(--primary-3000);
+        padding: 0.125rem 0.25rem;
+        margin-left: -0.25rem;
         cursor: pointer;
+        border: 1px solid transparent;
+        border-radius: calc(var(--radius) * 0.75);
 
-        .posthog-3000 & {
-            padding: 0.125rem 0.25rem;
-            margin-left: -0.25rem;
-            text-decoration: none;
-            border: 1px solid transparent;
-            border-radius: calc(var(--radius) * 0.75);
-
-            &:hover {
-                background: var(--bg-light);
-                border: 1px solid var(--border-light);
-            }
+        &:hover {
+            background: var(--bg-light);
+            border: 1px solid var(--border-light);
         }
     }
 }
diff --git a/frontend/src/lib/components/PropertiesTable/PropertiesTable.tsx b/frontend/src/lib/components/PropertiesTable/PropertiesTable.tsx
index 021a9eca39145..563ab6b8f370a 100644
--- a/frontend/src/lib/components/PropertiesTable/PropertiesTable.tsx
+++ b/frontend/src/lib/components/PropertiesTable/PropertiesTable.tsx
@@ -402,7 +402,6 @@ export function PropertiesTable({
                 <LemonTable
                     columns={columns}
                     showHeader={!embedded}
-                    size="small"
                     rowKey="0"
                     embedded={embedded}
                     dataSource={objectProperties}
diff --git a/frontend/src/lib/components/PropertyFilters/components/PropertyFilterButton.scss b/frontend/src/lib/components/PropertyFilters/components/PropertyFilterButton.scss
index b78e0aeedb8ac..c89f39145e278 100644
--- a/frontend/src/lib/components/PropertyFilters/components/PropertyFilterButton.scss
+++ b/frontend/src/lib/components/PropertyFilters/components/PropertyFilterButton.scss
@@ -16,7 +16,7 @@
 
     &:hover,
     &:focus {
-        border-color: var(--border);
+        border-color: var(--border-bold);
     }
 
     &:not(.PropertyFilterButton--clickable) {
@@ -53,16 +53,3 @@
         padding: 0 4px !important;
     }
 }
-
-.posthog-3000 {
-    .PropertyFilterButton {
-        &:hover,
-        &:focus {
-            border-color: var(--border-bold);
-        }
-
-        &:not(.PropertyFilterButton--clickable) {
-            border-color: transparent;
-        }
-    }
-}
diff --git a/frontend/src/lib/components/TaxonomicFilter/InfiniteList.scss b/frontend/src/lib/components/TaxonomicFilter/InfiniteList.scss
index 5c4d5c0d5fedc..727a7761b4fdd 100644
--- a/frontend/src/lib/components/TaxonomicFilter/InfiniteList.scss
+++ b/frontend/src/lib/components/TaxonomicFilter/InfiniteList.scss
@@ -66,12 +66,8 @@
         }
 
         &.hover {
-            background-color: var(--primary-bg-hover);
+            background-color: var(--bg-3000);
             border-radius: var(--radius);
-
-            .posthog-3000 & {
-                background-color: var(--bg-3000);
-            }
         }
 
         &.selected {
diff --git a/frontend/src/lib/constants.tsx b/frontend/src/lib/constants.tsx
index cdafc82f8a9c5..b0201f08e2f86 100644
--- a/frontend/src/lib/constants.tsx
+++ b/frontend/src/lib/constants.tsx
@@ -147,7 +147,6 @@ export const FEATURE_FLAGS = {
     QUERY_TIMINGS: 'query-timings', // owner: @mariusandra
     QUERY_ASYNC: 'query-async', // owner: @webjunkie
     POSTHOG_3000_NAV: 'posthog-3000-nav', // owner: @Twixes
-    POSTHOG_3000_WELCOME_ANNOUNCEMENT: 'posthog-3000-welcome-announcement', // owner: #posthog-3000
     ENABLE_PROMPTS: 'enable-prompts', // owner: @lharries
     HEDGEHOG_MODE: 'hedgehog-mode', // owner: @benjackwhite
     HEDGEHOG_MODE_DEBUG: 'hedgehog-mode-debug', // owner: @benjackwhite
diff --git a/frontend/src/lib/lemon-ui/LemonCalendar/LemonCalendar.scss b/frontend/src/lib/lemon-ui/LemonCalendar/LemonCalendar.scss
index 6613a79bde94f..ed6baaf7e8955 100644
--- a/frontend/src/lib/lemon-ui/LemonCalendar/LemonCalendar.scss
+++ b/frontend/src/lib/lemon-ui/LemonCalendar/LemonCalendar.scss
@@ -47,9 +47,7 @@
         }
     }
 
-    .posthog-3000 & {
-        .LemonCalendar__range--boundary {
-            background-color: var(--glass-border-3000);
-        }
+    .LemonCalendar__range--boundary {
+        background-color: var(--glass-border-3000);
     }
 }
diff --git a/frontend/src/lib/lemon-ui/LemonCheckbox/LemonCheckbox.scss b/frontend/src/lib/lemon-ui/LemonCheckbox/LemonCheckbox.scss
index 6b64da3a4091f..d83d4f5e898c1 100644
--- a/frontend/src/lib/lemon-ui/LemonCheckbox/LemonCheckbox.scss
+++ b/frontend/src/lib/lemon-ui/LemonCheckbox/LemonCheckbox.scss
@@ -13,7 +13,7 @@
 
     label {
         --tick-length: 12.73; // Approximation of tick length, which is (3 + 6) * sqrt(2)
-        --box-color: var(--primary);
+        --box-color: var(--primary-3000);
 
         display: flex;
         gap: 0.5rem;
@@ -21,23 +21,15 @@
         min-height: 1.5rem;
         cursor: pointer;
 
-        .posthog-3000 & {
-            --box-color: var(--primary-3000);
-        }
-
         > .LemonCheckbox__box {
             flex-shrink: 0;
             width: 1rem;
             height: 1rem;
             background: var(--bg-light);
             border: 1.5px solid var(--border-bold);
-            border-radius: 0.1875rem; // Intentionally a bit smaller than --radius
+            border-radius: 0.25rem; // Intentionally a bit smaller than --radius
             transition: border 200ms ease, background 200ms ease;
 
-            &.posthog-3000 {
-                border-radius: 0.25rem; // Intentionally a bit smaller than --radius
-            }
-
             path {
                 stroke: var(--bg-light);
                 stroke-dasharray: var(--tick-length);
diff --git a/frontend/src/lib/lemon-ui/LemonCollapse/LemonCollapse.scss b/frontend/src/lib/lemon-ui/LemonCollapse/LemonCollapse.scss
index 72c00bb67513a..f5b6972d48465 100644
--- a/frontend/src/lib/lemon-ui/LemonCollapse/LemonCollapse.scss
+++ b/frontend/src/lib/lemon-ui/LemonCollapse/LemonCollapse.scss
@@ -24,7 +24,7 @@
     font-weight: 500 !important; // Override status="stealth"'s font-weight
     border-radius: 0 !important;
 
-    .posthog-3000 &.LemonButton:active {
+    &.LemonButton:active {
         transform: inherit;
     }
 }
@@ -33,12 +33,9 @@
     box-sizing: content-box;
     height: 0;
     overflow: hidden;
+    background: var(--bg-light);
     border-top-width: 1px;
     transition: height 200ms ease;
-
-    .posthog-3000 & {
-        background: var(--bg-light);
-    }
 }
 
 .LemonCollapsePanel__content {
diff --git a/frontend/src/lib/lemon-ui/LemonInput/LemonInput.scss b/frontend/src/lib/lemon-ui/LemonInput/LemonInput.scss
index 6018b10f41bb7..28a84357dadeb 100644
--- a/frontend/src/lib/lemon-ui/LemonInput/LemonInput.scss
+++ b/frontend/src/lib/lemon-ui/LemonInput/LemonInput.scss
@@ -3,7 +3,7 @@
     gap: 0.25rem;
     align-items: center;
     justify-content: center;
-    height: 2.5rem;
+    height: calc(2.125rem + 3px); // Medium size button height + button shadow height
     padding: 0.25rem 0.5rem;
     font-size: 0.875rem;
     line-height: 1.25rem;
@@ -15,24 +15,12 @@
     border: 1px solid var(--border);
     border-radius: var(--radius);
 
-    .posthog-3000 & {
-        height: calc(2.125rem + 3px); // Medium size button height + button shadow height
-    }
-
     &:hover:not([aria-disabled='true']) {
-        border-color: var(--primary-3000-hover);
-
-        .posthog-3000 & {
-            border-color: var(--border-bold);
-        }
+        border-color: var(--border-bold);
     }
 
     &.LemonInput--focused:not([aria-disabled='true']) {
-        border-color: var(--primary-3000);
-
-        .posthog-3000 & {
-            border-color: var(--border-active);
-        }
+        border-color: var(--border-active);
     }
 
     &.LemonInput--transparent-background {
diff --git a/frontend/src/lib/lemon-ui/LemonModal/LemonModal.scss b/frontend/src/lib/lemon-ui/LemonModal/LemonModal.scss
index d7c3b21b6ba00..a10cc87433af0 100644
--- a/frontend/src/lib/lemon-ui/LemonModal/LemonModal.scss
+++ b/frontend/src/lib/lemon-ui/LemonModal/LemonModal.scss
@@ -33,7 +33,7 @@
     max-height: 90%;
     margin: 1rem auto;
     background-color: var(--bg-light);
-    border: 1px solid var(--border-3000);
+    border: 1px solid var(--secondary-3000-button-border);
     border-radius: var(--radius);
     box-shadow: var(--modal-shadow-elevation);
     opacity: 0;
@@ -91,10 +91,6 @@
         height: 100%;
         overflow: hidden;
     }
-
-    .posthog-3000 & {
-        border-color: var(--secondary-3000-button-border);
-    }
 }
 
 .LemonModal__header {
diff --git a/frontend/src/lib/lemon-ui/LemonSelectMultiple/LemonSelectMultiple.scss b/frontend/src/lib/lemon-ui/LemonSelectMultiple/LemonSelectMultiple.scss
index 087aa0f39c5d8..67200ac17bdf3 100644
--- a/frontend/src/lib/lemon-ui/LemonSelectMultiple/LemonSelectMultiple.scss
+++ b/frontend/src/lib/lemon-ui/LemonSelectMultiple/LemonSelectMultiple.scss
@@ -4,7 +4,7 @@
 
         .ant-select-selector,
         &.ant-select-single .ant-select-selector {
-            min-height: 2.5rem;
+            min-height: 2.125rem;
             padding: 0.25rem;
             font-size: 0.875rem;
             line-height: 1.25rem;
@@ -13,10 +13,6 @@
             border: 1px solid var(--border);
             border-radius: var(--radius);
 
-            .posthog-3000 & {
-                min-height: 2.125rem;
-            }
-
             .ant-select-selection-overflow {
                 gap: 0.25rem;
             }
@@ -71,13 +67,9 @@
     padding: 0.5rem;
     margin: -4px 0; // Counteract antd wrapper
     background: var(--bg-light);
-    border: 1px solid var(--primary);
+    border: 1px solid var(--primary-3000);
     border-radius: var(--radius);
 
-    .posthog-3000 & {
-        border: 1px solid var(--primary-3000);
-    }
-
     .ant-select-item {
         padding: 0;
         padding-bottom: 0.2rem;
diff --git a/frontend/src/lib/lemon-ui/LemonSwitch/LemonSwitch.scss b/frontend/src/lib/lemon-ui/LemonSwitch/LemonSwitch.scss
index eccd270e72e1f..a63c3e5fdc63c 100644
--- a/frontend/src/lib/lemon-ui/LemonSwitch/LemonSwitch.scss
+++ b/frontend/src/lib/lemon-ui/LemonSwitch/LemonSwitch.scss
@@ -1,6 +1,6 @@
 .LemonSwitch {
-    --lemon-switch-height: 1.25rem;
-    --lemon-switch-width: 2.25rem;
+    --lemon-switch-height: 1.125rem;
+    --lemon-switch-width: calc(11 / 6 * var(--lemon-switch-height)); // Same proportion as in IconToggle
 
     display: flex;
     gap: 0.5rem;
@@ -23,17 +23,13 @@
     }
 
     &.LemonSwitch--bordered {
-        min-height: 2.5rem;
+        min-height: calc(2.125rem + 3px); // Medium size button height + button shadow height
         padding: 0 0.75rem;
         line-height: 1.4;
         background: var(--bg-light);
         border: 1px solid var(--border);
         border-radius: var(--radius);
 
-        .posthog-3000 & {
-            min-height: calc(2.125rem + 3px); // Medium size button height + button shadow height
-        }
-
         &.LemonSwitch--small {
             gap: 0.5rem;
             min-height: 2rem;
@@ -54,11 +50,6 @@
             cursor: not-allowed; // A label with for=* also toggles the switch, so it shouldn't have the text select cursor
         }
     }
-
-    .posthog-3000 & {
-        --lemon-switch-height: 1.125rem;
-        --lemon-switch-width: calc(11 / 6 * var(--lemon-switch-height)); // Same proportion as in IconToggle
-    }
 }
 
 .LemonSwitch__button {
@@ -79,91 +70,57 @@
 
 .LemonSwitch__slider {
     position: absolute;
-    top: 5px;
+    top: 0;
     left: 0;
     display: inline-block;
-    width: 2.25rem;
-    height: 0.625rem;
-    background-color: var(--border);
-    border-radius: 0.625rem;
+    width: 100%;
+    height: 100%;
+    pointer-events: none;
+    background-color: var(--border-bold);
+    border-radius: var(--lemon-switch-height);
     transition: background-color 100ms ease;
 
-    .posthog-3000 & {
-        top: 0;
-        width: 100%;
-        height: 100%;
-        pointer-events: none;
-        background-color: var(--border-bold);
-        border-radius: var(--lemon-switch-height);
-    }
-
     .LemonSwitch--checked & {
-        background-color: var(--primary-highlight);
-
-        .posthog-3000 & {
-            background-color: var(--primary-3000);
-        }
+        background-color: var(--primary-3000);
     }
 }
 
 .LemonSwitch__handle {
+    --lemon-switch-handle-ratio: calc(3 / 4); // Same proportion as in IconToggle
+    --lemon-switch-handle-gutter: calc(var(--lemon-switch-height) * calc(1 - var(--lemon-switch-handle-ratio)) / 2);
+    --lemon-switch-handle-width: calc(var(--lemon-switch-height) * var(--lemon-switch-handle-ratio));
+    --lemon-switch-active-translate: translateX(
+        calc(var(--lemon-switch-width) - var(--lemon-switch-handle-width) - var(--lemon-switch-handle-gutter) * 2)
+    );
+
     position: absolute;
-    top: 0;
-    left: 0;
+    top: var(--lemon-switch-handle-gutter);
+    left: var(--lemon-switch-handle-gutter);
     display: flex;
     align-items: center;
     justify-content: center;
-    width: 1.25rem;
-    height: 1.25rem;
+    width: var(--lemon-switch-handle-width);
+    height: calc(var(--lemon-switch-height) * var(--lemon-switch-handle-ratio));
+    pointer-events: none;
     cursor: inherit;
     background-color: #fff;
-    border: 2px solid var(--border);
+    border: none;
     border-radius: 0.625rem;
     transition: background-color 100ms ease, transform 100ms ease, width 100ms ease, border-color 100ms ease;
 
-    .posthog-3000 & {
-        --lemon-switch-handle-ratio: calc(3 / 4); // Same proportion as in IconToggle
-        --lemon-switch-handle-gutter: calc(var(--lemon-switch-height) * calc(1 - var(--lemon-switch-handle-ratio)) / 2);
-        --lemon-switch-handle-width: calc(var(--lemon-switch-height) * var(--lemon-switch-handle-ratio));
-        --lemon-switch-active-translate: translateX(
-            calc(var(--lemon-switch-width) - var(--lemon-switch-handle-width) - var(--lemon-switch-handle-gutter) * 2)
-        );
-
-        top: var(--lemon-switch-handle-gutter);
-        left: var(--lemon-switch-handle-gutter);
-        width: var(--lemon-switch-handle-width);
-        height: calc(var(--lemon-switch-height) * var(--lemon-switch-handle-ratio));
-        pointer-events: none;
-        background-color: #fff;
-        border: none;
-    }
-
     .LemonSwitch--checked & {
-        background-color: var(--primary-3000);
+        background-color: #fff;
         border-color: var(--primary-3000);
-        transform: translateX(1rem);
-
-        .posthog-3000 & {
-            background-color: #fff;
-            transform: var(--lemon-switch-active-translate);
-        }
+        transform: var(--lemon-switch-active-translate);
     }
 
     .LemonSwitch--active & {
-        transform: scale(1.1);
-
-        .posthog-3000 & {
-            --lemon-switch-handle-width: calc(var(--lemon-switch-height) * var(--lemon-switch-handle-ratio) * 1.2);
+        --lemon-switch-handle-width: calc(var(--lemon-switch-height) * var(--lemon-switch-handle-ratio) * 1.2);
 
-            transform: none;
-        }
+        transform: none;
     }
 
     .LemonSwitch--active.LemonSwitch--checked & {
-        transform: translateX(1rem) scale(1.1);
-
-        .posthog-3000 & {
-            transform: var(--lemon-switch-active-translate);
-        }
+        transform: var(--lemon-switch-active-translate);
     }
 }
diff --git a/frontend/src/lib/lemon-ui/LemonTable/LemonTable.scss b/frontend/src/lib/lemon-ui/LemonTable/LemonTable.scss
index 2bf5449f0b4aa..b944d2f17635e 100644
--- a/frontend/src/lib/lemon-ui/LemonTable/LemonTable.scss
+++ b/frontend/src/lib/lemon-ui/LemonTable/LemonTable.scss
@@ -1,5 +1,5 @@
 .LemonTable {
-    --row-base-height: 3rem;
+    --row-base-height: auto;
     --row-horizontal-padding: 1rem;
     --lemon-table-background-color: var(--bg-table);
 
@@ -7,6 +7,7 @@
     flex: 1;
     width: 100%;
     overflow: hidden;
+    font-size: 13px;
     background: var(--lemon-table-background-color);
     border: 1px solid var(--border);
     border-radius: var(--radius);
@@ -24,12 +25,6 @@
         border: none;
     }
 
-    .posthog-3000 & {
-        --row-base-height: auto;
-
-        font-size: 13px;
-    }
-
     &.LemonTable--with-ribbon {
         --row-ribbon-width: 0.25rem;
 
@@ -49,18 +44,12 @@
     }
 
     &--xs {
-        --row-base-height: 2rem;
-
         .LemonTable__content > table > tbody > tr > td {
             padding-top: 0.25rem;
             padding-bottom: 0.25rem;
         }
     }
 
-    &--small {
-        --row-base-height: 2.5rem;
-    }
-
     &--embedded {
         background: none;
         border: none;
@@ -72,11 +61,8 @@
 
         .LemonTable__content > table {
             > thead {
+                background: none;
                 border-bottom: none;
-
-                .posthog-3000 & {
-                    background: none;
-                }
             }
 
             > thead,
@@ -127,12 +113,10 @@
     }
 
     a.Link {
-        .posthog-3000 & {
-            color: var(--default);
+        color: var(--default);
 
-            &:not(:disabled):hover {
-                color: var(--primary-3000-hover);
-            }
+        &:not(:disabled):hover {
+            color: var(--primary-3000-hover);
         }
     }
 }
@@ -147,14 +131,12 @@
         font-size: 0.75rem;
         text-transform: uppercase;
         letter-spacing: 0.03125rem;
-        background: var(--mid);
-
-        .posthog-3000 & {
-            background: var(--lemon-table-background-color);
-        }
+        background: var(--lemon-table-background-color);
 
         > tr {
             > th {
+                padding-top: 0.5rem;
+                padding-bottom: 0.5rem;
                 font-weight: 700;
                 text-align: left;
 
@@ -162,15 +144,8 @@
                 // Also it needs to be on the th - any higher and safari will not render the shadow
                 box-shadow: inset 0 -1px var(--border);
 
-                .posthog-3000 & {
-                    padding-top: 0.5rem;
-                    padding-bottom: 0.5rem;
-                }
-
                 .LemonButton {
-                    .posthog-3000 & {
-                        margin: -0.5rem 0;
-                    }
+                    margin: -0.5rem 0;
                 }
             }
 
@@ -293,30 +268,26 @@
 .LemonTable__header {
     cursor: default;
 
-    .posthog-3000 & {
-        .LemonTable__header-content {
-            color: var(--text-secondary);
-        }
+    .LemonTable__header-content {
+        color: var(--text-secondary);
     }
 
     &.LemonTable__header--actionable {
         cursor: pointer;
 
-        .posthog-3000 & {
-            &:hover {
-                &:not(:has(.LemonTable__header--no-hover:hover)) {
-                    .LemonTable__header-content {
-                        color: var(--default);
-                    }
-                }
-            }
-
-            &:active {
+        &:hover {
+            &:not(:has(.LemonTable__header--no-hover:hover)) {
                 .LemonTable__header-content {
                     color: var(--default);
                 }
             }
         }
+
+        &:active {
+            .LemonTable__header-content {
+                color: var(--default);
+            }
+        }
     }
 }
 
@@ -346,11 +317,7 @@
 }
 
 .LemonTable__header--sticky::before {
-    background: var(--mid);
-
-    .posthog-3000 & {
-        background: var(--lemon-table-background-color);
-    }
+    background: var(--lemon-table-background-color);
 }
 
 // Stickiness is disabled in snapshots due to flakiness
diff --git a/frontend/src/lib/lemon-ui/LemonTable/LemonTable.stories.tsx b/frontend/src/lib/lemon-ui/LemonTable/LemonTable.stories.tsx
index b0c604b5e2cf7..a9c360b431cfb 100644
--- a/frontend/src/lib/lemon-ui/LemonTable/LemonTable.stories.tsx
+++ b/frontend/src/lib/lemon-ui/LemonTable/LemonTable.stories.tsx
@@ -176,9 +176,6 @@ WithExpandableRows.args = {
 export const Small: Story = BasicTemplate.bind({})
 Small.args = { size: 'small' }
 
-export const XSmall: Story = BasicTemplate.bind({})
-XSmall.args = { size: 'xs' }
-
 export const Embedded: Story = BasicTemplate.bind({})
 Embedded.args = { embedded: true }
 
diff --git a/frontend/src/lib/lemon-ui/LemonTable/LemonTable.tsx b/frontend/src/lib/lemon-ui/LemonTable/LemonTable.tsx
index 7cba42509ac08..8fb3ee58a65ae 100644
--- a/frontend/src/lib/lemon-ui/LemonTable/LemonTable.tsx
+++ b/frontend/src/lib/lemon-ui/LemonTable/LemonTable.tsx
@@ -47,7 +47,7 @@ export interface LemonTableProps<T extends Record<string, any>> {
     /** Function that for each row determines what props should its `tr` element have based on the row's record. */
     onRow?: (record: T) => Omit<HTMLProps<HTMLTableRowElement>, 'key'>
     /** How tall should rows be. The default value is `"middle"`. */
-    size?: 'xs' | 'small' | 'middle'
+    size?: 'small' | 'middle'
     /** Whether this table already is inset, meaning it needs reduced horizontal padding (0.5rem instead of 1rem). */
     inset?: boolean
     /** An embedded table has no border around it and no background. This way it blends better into other components. */
diff --git a/frontend/src/lib/lemon-ui/LemonTable/LemonTableLoader.scss b/frontend/src/lib/lemon-ui/LemonTable/LemonTableLoader.scss
index c75c739b37653..49a382f7bd061 100644
--- a/frontend/src/lib/lemon-ui/LemonTable/LemonTableLoader.scss
+++ b/frontend/src/lib/lemon-ui/LemonTable/LemonTableLoader.scss
@@ -7,14 +7,10 @@
     height: 0;
     padding: 0.05rem !important;
     overflow: hidden;
-    background: var(--primary-bg-active);
+    background: var(--primary-3000-highlight);
     border: none !important;
     transition: height 200ms ease, top 200ms ease;
 
-    .posthog-3000 & {
-        background: var(--primary-3000-highlight);
-    }
-
     &::after {
         position: absolute;
         top: 0;
@@ -22,12 +18,8 @@
         width: 50%;
         height: 100%;
         content: '';
-        background: var(--primary);
+        background: var(--primary-3000);
         animation: LemonTableLoader__swooping 1.5s linear infinite;
-
-        .posthog-3000 & {
-            background: var(--primary-3000);
-        }
     }
 
     &.LemonTableLoader--enter-active,
diff --git a/frontend/src/lib/lemon-ui/LemonTag/LemonTag.scss b/frontend/src/lib/lemon-ui/LemonTag/LemonTag.scss
index 93f2d8a133165..807b7765e3420 100644
--- a/frontend/src/lib/lemon-ui/LemonTag/LemonTag.scss
+++ b/frontend/src/lib/lemon-ui/LemonTag/LemonTag.scss
@@ -25,14 +25,9 @@
     }
 
     &.LemonTag--primary {
-        color: #fff;
-        background-color: var(--primary-3000);
-
-        .posthog-3000 & {
-            color: var(--primary-3000);
-            background: none;
-            border-color: var(--primary-3000);
-        }
+        color: var(--primary-3000);
+        background: none;
+        border-color: var(--primary-3000);
     }
 
     &.LemonTag--option {
@@ -41,69 +36,39 @@
     }
 
     &.LemonTag--highlight {
-        color: var(--bg-charcoal);
-        background-color: var(--mark);
-
-        .posthog-3000 & {
-            color: var(--highlight);
-            background: none;
-            border-color: var(--highlight);
-        }
+        color: var(--highlight);
+        background: none;
+        border-color: var(--highlight);
     }
 
     &.LemonTag--warning {
-        color: var(--bg-charcoal);
-        background-color: var(--warning);
-
-        .posthog-3000 & {
-            color: var(--warning);
-            background: none;
-            border-color: var(--warning);
-        }
+        color: var(--warning);
+        background-color: none;
+        border-color: var(--warning);
     }
 
     &.LemonTag--danger {
-        color: #fff;
-        background-color: var(--danger);
-
-        .posthog-3000 & {
-            color: var(--danger);
-            background: none;
-            border-color: var(--danger);
-        }
+        color: var(--danger);
+        background: none;
+        border-color: var(--danger);
     }
 
     &.LemonTag--success {
-        color: #fff;
-        background-color: var(--success);
-
-        .posthog-3000 & {
-            color: var(--success);
-            background: none;
-            border-color: var(--success);
-        }
+        color: var(--success);
+        background: none;
+        border-color: var(--success);
     }
 
     &.LemonTag--completion {
-        color: var(--bg-charcoal);
-        background-color: var(--purple-light);
-
-        .posthog-3000 & {
-            color: var(--purple);
-            background: none;
-            border-color: var(--purple);
-        }
+        color: var(--purple);
+        background: none;
+        border-color: var(--purple);
     }
 
     &.LemonTag--caution {
-        color: var(--bg-charcoal);
-        background-color: var(--danger-lighter);
-
-        .posthog-3000 & {
-            color: var(--danger-lighter);
-            background: none;
-            border-color: var(--danger-lighter);
-        }
+        color: var(--danger-lighter);
+        background: none;
+        border-color: var(--danger-lighter);
     }
 
     &.LemonTag--muted {
diff --git a/frontend/src/lib/lemon-ui/LemonTextArea/LemonTextArea.scss b/frontend/src/lib/lemon-ui/LemonTextArea/LemonTextArea.scss
index 3c24f908503e9..9c89b575b4a0b 100644
--- a/frontend/src/lib/lemon-ui/LemonTextArea/LemonTextArea.scss
+++ b/frontend/src/lib/lemon-ui/LemonTextArea/LemonTextArea.scss
@@ -17,11 +17,7 @@
     transition: background-color 200ms ease, color 200ms ease, border 200ms ease, opacity 200ms ease;
 
     &:not(:disabled):hover {
-        border: 1px solid var(--primary-3000-hover);
-
-        .posthog-3000 & {
-            border-color: var(--border-bold);
-        }
+        border: 1px solid var(--border-bold);
     }
 
     &:disabled {
@@ -30,11 +26,7 @@
     }
 
     &:focus:not(:disabled) {
-        border: 1px solid var(--primary-3000);
-
-        .posthog-3000 & {
-            border-color: var(--border-active);
-        }
+        border: 1px solid var(--border-active);
     }
 
     .Field--error & {
diff --git a/frontend/src/lib/lemon-ui/Link/Link.scss b/frontend/src/lib/lemon-ui/Link/Link.scss
index 13969c9df18b1..24a0bf5f65522 100644
--- a/frontend/src/lib/lemon-ui/Link/Link.scss
+++ b/frontend/src/lib/lemon-ui/Link/Link.scss
@@ -28,12 +28,10 @@
     }
 
     &--subtle {
-        .posthog-3000 & {
-            color: var(--default);
+        color: var(--default);
 
-            &:not(:disabled):hover {
-                color: var(--primary-3000-hover);
-            }
+        &:not(:disabled):hover {
+            color: var(--primary-3000-hover);
         }
     }
 }
diff --git a/frontend/src/lib/lemon-ui/Spinner/Spinner.scss b/frontend/src/lib/lemon-ui/Spinner/Spinner.scss
index e5ddf2a3cb175..3ab31c08e9be6 100644
--- a/frontend/src/lib/lemon-ui/Spinner/Spinner.scss
+++ b/frontend/src/lib/lemon-ui/Spinner/Spinner.scss
@@ -78,7 +78,7 @@
         position: relative;
     }
 
-    .posthog-3000 &.SpinnerOverlay--scene-level::before {
+    &.SpinnerOverlay--scene-level::before {
         background: var(--bg-3000);
     }
 }
diff --git a/frontend/src/queries/nodes/DataVisualization/Components/Charts/LineGraph.tsx b/frontend/src/queries/nodes/DataVisualization/Components/Charts/LineGraph.tsx
index 0e5066658245e..a7c5e4d9237f7 100644
--- a/frontend/src/queries/nodes/DataVisualization/Components/Charts/LineGraph.tsx
+++ b/frontend/src/queries/nodes/DataVisualization/Components/Charts/LineGraph.tsx
@@ -203,7 +203,6 @@ export const LineGraph = (): JSX.Element => {
                                                 },
                                             },
                                         ]}
-                                        size="small"
                                         uppercaseHeader={false}
                                         rowRibbonColor={(_datum, index) => getSeriesColor(index)}
                                         showHeader
diff --git a/frontend/src/queries/nodes/InsightViz/PropertyGroupFilters/PropertyGroupFilters.scss b/frontend/src/queries/nodes/InsightViz/PropertyGroupFilters/PropertyGroupFilters.scss
index 618d3c39bca1f..8eface52ec75f 100644
--- a/frontend/src/queries/nodes/InsightViz/PropertyGroupFilters/PropertyGroupFilters.scss
+++ b/frontend/src/queries/nodes/InsightViz/PropertyGroupFilters/PropertyGroupFilters.scss
@@ -2,11 +2,8 @@
     .property-group {
         padding: 0.5rem;
         background-color: var(--side);
+        border-width: 1px;
         border-radius: var(--radius);
-
-        .posthog-3000 & {
-            border-width: 1px;
-        }
     }
 
     .property-group-and-or-separator {
diff --git a/frontend/src/scenes/batch_exports/BatchExportScene.tsx b/frontend/src/scenes/batch_exports/BatchExportScene.tsx
index c3c0bb68228f0..039a47a104354 100644
--- a/frontend/src/scenes/batch_exports/BatchExportScene.tsx
+++ b/frontend/src/scenes/batch_exports/BatchExportScene.tsx
@@ -125,7 +125,6 @@ export function RunsTab(): JSX.Element {
                                         <LemonTable
                                             dataSource={groupedRuns.runs}
                                             embedded={true}
-                                            size="small"
                                             columns={[
                                                 {
                                                     title: 'Status',
@@ -373,7 +372,6 @@ export function LogsTab({ batchExportId }: BatchExportLogsProps): JSX.Element {
                 dataSource={batchExportLogs}
                 columns={columns}
                 loading={batchExportLogsLoading}
-                size="small"
                 className="ph-no-capture"
                 pagination={{ pageSize: 200, hideOnSinglePage: true }}
             />
diff --git a/frontend/src/scenes/billing/BillingProduct.tsx b/frontend/src/scenes/billing/BillingProduct.tsx
index 088fc2a11a2ea..25a6d6dcaefba 100644
--- a/frontend/src/scenes/billing/BillingProduct.tsx
+++ b/frontend/src/scenes/billing/BillingProduct.tsx
@@ -536,7 +536,7 @@ export const BillingProduct = ({ product }: { product: BillingProductV2Type }):
                                     <LemonTable
                                         stealth
                                         embedded
-                                        size="xs"
+                                        size="small"
                                         uppercaseHeader={false}
                                         columns={tableColumns}
                                         dataSource={tableTierData}
@@ -559,7 +559,7 @@ export const BillingProduct = ({ product }: { product: BillingProductV2Type }):
                                 <LemonTable
                                     stealth
                                     embedded
-                                    size="xs"
+                                    size="small"
                                     uppercaseHeader={false}
                                     columns={[
                                         { title: '', dataIndex: 'name' },
diff --git a/frontend/src/scenes/billing/ExportsUnsubscribeTable/ExportsUnsubscribeTable.tsx b/frontend/src/scenes/billing/ExportsUnsubscribeTable/ExportsUnsubscribeTable.tsx
index dde100e766313..2df52f4287688 100644
--- a/frontend/src/scenes/billing/ExportsUnsubscribeTable/ExportsUnsubscribeTable.tsx
+++ b/frontend/src/scenes/billing/ExportsUnsubscribeTable/ExportsUnsubscribeTable.tsx
@@ -19,7 +19,7 @@ export function ExportsUnsubscribeTable(): JSX.Element {
     return (
         <LemonTable
             dataSource={itemsToDisable}
-            size="xs"
+            size="small"
             loading={loading}
             columns={[
                 {
diff --git a/frontend/src/scenes/cohorts/CohortEdit.tsx b/frontend/src/scenes/cohorts/CohortEdit.tsx
index 6ea3dfb674628..f731dc692bcef 100644
--- a/frontend/src/scenes/cohorts/CohortEdit.tsx
+++ b/frontend/src/scenes/cohorts/CohortEdit.tsx
@@ -120,7 +120,6 @@ export function CohortEdit({ id }: CohortLogicProps): JSX.Element {
                         </div>
                     }
                 />
-                <LemonDivider className="my-2 non-3000" />
                 <div className="space-y-2 max-w-160">
                     <div className="flex gap-4 flex-wrap">
                         <div className="flex-1">
diff --git a/frontend/src/scenes/dashboard/EmptyDashboardComponent.scss b/frontend/src/scenes/dashboard/EmptyDashboardComponent.scss
index b8e3359b89362..a96eade91b6d6 100644
--- a/frontend/src/scenes/dashboard/EmptyDashboardComponent.scss
+++ b/frontend/src/scenes/dashboard/EmptyDashboardComponent.scss
@@ -11,13 +11,11 @@
         overflow: hidden;
 
         &::after {
+            --bg-light: var(--bg-3000); // Make the fade blend in with the 3000 background smoothly
+
             width: 100%;
             height: 150px;
 
-            .posthog-3000 & {
-                --bg-light: var(--bg-3000); // Make the fade blend in with the 3000 background smoothly
-            }
-
             @extend %mixin-gradient-overlay;
         }
     }
diff --git a/frontend/src/scenes/data-management/database/DatabaseTable.tsx b/frontend/src/scenes/data-management/database/DatabaseTable.tsx
index bbf5c67db647e..83b70c8abb41c 100644
--- a/frontend/src/scenes/data-management/database/DatabaseTable.tsx
+++ b/frontend/src/scenes/data-management/database/DatabaseTable.tsx
@@ -13,7 +13,6 @@ interface DatabaseTableProps {
 export function DatabaseTable({ table, tables }: DatabaseTableProps): JSX.Element {
     return (
         <LemonTable
-            size="small"
             dataSource={tables.find(({ name }) => name === table)?.columns ?? []}
             columns={[
                 {
diff --git a/frontend/src/scenes/data-management/ingestion-warnings/IngestionWarningsView.tsx b/frontend/src/scenes/data-management/ingestion-warnings/IngestionWarningsView.tsx
index bb635d6e8fd55..f9dd1830383b8 100644
--- a/frontend/src/scenes/data-management/ingestion-warnings/IngestionWarningsView.tsx
+++ b/frontend/src/scenes/data-management/ingestion-warnings/IngestionWarningsView.tsx
@@ -239,7 +239,6 @@ function RenderNestedWarnings(warningSummary: IngestionWarningSummary): JSX.Elem
                 },
             ]}
             embedded
-            size="small"
             showHeader={false}
         />
     )
diff --git a/frontend/src/scenes/events/Events.tsx b/frontend/src/scenes/events/Events.tsx
index ae21bad463961..4ae39dc817fa1 100644
--- a/frontend/src/scenes/events/Events.tsx
+++ b/frontend/src/scenes/events/Events.tsx
@@ -14,7 +14,6 @@ export function Events(): JSX.Element {
     return (
         <>
             <PageHeader />
-            <div className="non-3000 pt-4 border-t" />
             <AndroidRecordingsPromptBanner context="events" />
             <EventsScene />
         </>
diff --git a/frontend/src/scenes/feature-flags/FeatureFlag.tsx b/frontend/src/scenes/feature-flags/FeatureFlag.tsx
index 7aeee10e75204..ee658db1b2061 100644
--- a/frontend/src/scenes/feature-flags/FeatureFlag.tsx
+++ b/frontend/src/scenes/feature-flags/FeatureFlag.tsx
@@ -275,7 +275,6 @@ export function FeatureFlag({ id }: { id?: string } = {}): JSX.Element {
                                 </div>
                             }
                         />
-                        <LemonDivider className="my-2 non-3000" />
                         {featureFlag.experiment_set && featureFlag.experiment_set?.length > 0 && (
                             <LemonBanner type="warning">
                                 This feature flag is linked to an experiment. Edit settings here only for advanced
@@ -285,7 +284,7 @@ export function FeatureFlag({ id }: { id?: string } = {}): JSX.Element {
                                 </Link>
                             </LemonBanner>
                         )}
-                        <div className="mt-4 mb-8">
+                        <div className="my-4">
                             <div className="max-w-1/2 space-y-4">
                                 <LemonField
                                     name="key"
diff --git a/frontend/src/scenes/funnels/FunnelBarGraph/FunnelBarGraph.scss b/frontend/src/scenes/funnels/FunnelBarGraph/FunnelBarGraph.scss
index 92510c254be38..a2349cfa463a0 100644
--- a/frontend/src/scenes/funnels/FunnelBarGraph/FunnelBarGraph.scss
+++ b/frontend/src/scenes/funnels/FunnelBarGraph/FunnelBarGraph.scss
@@ -115,13 +115,9 @@ $glyph_height: 23px; // Based on .funnel-step-glyph
         flex-direction: row;
         height: 32px;
         margin: 4px 0;
-        background-color: var(--border-light);
+        background-color: var(--border-3000);
         border-radius: var(--radius);
 
-        .posthog-3000 & {
-            background-color: var(--border-3000);
-        }
-
         .funnel-bar {
             position: relative;
             height: 100%;
diff --git a/frontend/src/scenes/insights/InsightTooltip/InsightTooltip.tsx b/frontend/src/scenes/insights/InsightTooltip/InsightTooltip.tsx
index dcd9f19fffdac..7a0893ca724e0 100644
--- a/frontend/src/scenes/insights/InsightTooltip/InsightTooltip.tsx
+++ b/frontend/src/scenes/insights/InsightTooltip/InsightTooltip.tsx
@@ -178,7 +178,6 @@ export function InsightTooltip({
                     dataSource={dataSource.slice(0, rowCutoff)}
                     columns={columns}
                     rowKey="id"
-                    size="small"
                     uppercaseHeader={false}
                     rowRibbonColor={hideColorCol ? undefined : (datum) => datum.color || null}
                     showHeader={showHeader}
@@ -239,7 +238,6 @@ export function InsightTooltip({
                 dataSource={dataSource.slice(0, rowCutoff)}
                 columns={columns}
                 rowKey="id"
-                size="small"
                 className="ph-no-capture"
                 uppercaseHeader={false}
                 rowRibbonColor={hideColorCol ? undefined : (datum: SeriesDatum) => datum.color || null}
diff --git a/frontend/src/scenes/pipeline/Destinations.tsx b/frontend/src/scenes/pipeline/Destinations.tsx
index 9f251fe942d1e..149f8a2cc60fb 100644
--- a/frontend/src/scenes/pipeline/Destinations.tsx
+++ b/frontend/src/scenes/pipeline/Destinations.tsx
@@ -52,7 +52,7 @@ function DestinationsTable(): JSX.Element {
         <>
             <LemonTable
                 dataSource={destinations}
-                size="xs"
+                size="small"
                 loading={loading}
                 columns={[
                     {
diff --git a/frontend/src/scenes/pipeline/PipelineNodeLogs.tsx b/frontend/src/scenes/pipeline/PipelineNodeLogs.tsx
index 6c2d5e5374f2a..cdb72aecf8d29 100644
--- a/frontend/src/scenes/pipeline/PipelineNodeLogs.tsx
+++ b/frontend/src/scenes/pipeline/PipelineNodeLogs.tsx
@@ -56,7 +56,6 @@ export function PipelineNodeLogs({ id, stage }: PipelineNodeLogicProps): JSX.Ele
                 dataSource={logs}
                 columns={columns}
                 loading={logsLoading}
-                size="small"
                 className="ph-no-capture"
                 rowKey="timestamp"
                 pagination={{ pageSize: 200, hideOnSinglePage: true }}
diff --git a/frontend/src/scenes/pipeline/Transformations.tsx b/frontend/src/scenes/pipeline/Transformations.tsx
index 9194166f4d161..cee7f5dced7e8 100644
--- a/frontend/src/scenes/pipeline/Transformations.tsx
+++ b/frontend/src/scenes/pipeline/Transformations.tsx
@@ -84,7 +84,7 @@ export function Transformations(): JSX.Element {
                     )}
                     <LemonTable
                         dataSource={transformations}
-                        size="xs"
+                        size="small"
                         loading={loading}
                         columns={[
                             {
diff --git a/frontend/src/scenes/project-homepage/ProjectHomepage.scss b/frontend/src/scenes/project-homepage/ProjectHomepage.scss
index 90d80d46c02ea..759f253b69aa6 100644
--- a/frontend/src/scenes/project-homepage/ProjectHomepage.scss
+++ b/frontend/src/scenes/project-homepage/ProjectHomepage.scss
@@ -20,13 +20,11 @@
                 }
             }
 
-            .posthog-3000 & {
-                a {
-                    color: var(--default);
+            a {
+                color: var(--default);
 
-                    &:hover {
-                        color: var(--primary-3000);
-                    }
+                &:hover {
+                    color: var(--primary-3000);
                 }
             }
         }
diff --git a/frontend/src/scenes/session-recordings/player/PlayerFrame.scss b/frontend/src/scenes/session-recordings/player/PlayerFrame.scss
index 924b067190978..9eb6bad67b2ba 100644
--- a/frontend/src/scenes/session-recordings/player/PlayerFrame.scss
+++ b/frontend/src/scenes/session-recordings/player/PlayerFrame.scss
@@ -8,11 +8,7 @@
     width: 100%;
     height: 100%;
     overflow: hidden;
-    background-color: var(--bg-charcoal);
-
-    .posthog-3000 & {
-        background-color: var(--bg-3000-dark);
-    }
+    background-color: var(--bg-3000-dark);
 
     .PlayerFrame__content {
         position: absolute;
diff --git a/frontend/src/scenes/session-recordings/player/PlayerMeta.scss b/frontend/src/scenes/session-recordings/player/PlayerMeta.scss
index d572eda28955c..a2a89a0af5103 100644
--- a/frontend/src/scenes/session-recordings/player/PlayerMeta.scss
+++ b/frontend/src/scenes/session-recordings/player/PlayerMeta.scss
@@ -81,12 +81,10 @@
     }
 
     .Link {
-        .posthog-3000 & {
-            color: var(--default);
+        color: var(--default);
 
-            &:hover {
-                color: var(--primary-3000);
-            }
+        &:hover {
+            color: var(--primary-3000);
         }
     }
 }
diff --git a/frontend/src/scenes/session-recordings/player/inspector/PlayerInspectorList.scss b/frontend/src/scenes/session-recordings/player/inspector/PlayerInspectorList.scss
index 0a5e430bf08e4..362eb9aceac3a 100644
--- a/frontend/src/scenes/session-recordings/player/inspector/PlayerInspectorList.scss
+++ b/frontend/src/scenes/session-recordings/player/inspector/PlayerInspectorList.scss
@@ -7,12 +7,8 @@
     height: 0.5rem;
     margin-top: 0.25rem;
     pointer-events: none;
-    background-color: var(--primary);
+    background-color: var(--primary-3000);
     border-radius: var(--radius) 0 0 var(--radius);
     transition: transform 200ms linear;
     will-change: transform;
-
-    .posthog-3000 & {
-        background-color: var(--primary-3000);
-    }
 }
diff --git a/frontend/src/scenes/session-recordings/playlist/SessionRecordingsPlaylist.scss b/frontend/src/scenes/session-recordings/playlist/SessionRecordingsPlaylist.scss
index f0a6e629424ea..d2fcab212dbcb 100644
--- a/frontend/src/scenes/session-recordings/playlist/SessionRecordingsPlaylist.scss
+++ b/frontend/src/scenes/session-recordings/playlist/SessionRecordingsPlaylist.scss
@@ -22,9 +22,7 @@
         overflow: hidden;
 
         .text-link {
-            .posthog-3000 & {
-                color: var(--default);
-            }
+            color: var(--default);
         }
     }
 
@@ -56,12 +54,8 @@
 
 .SessionRecordingPlaylistHeightWrapper {
     // NOTE: Somewhat random way to offset the various headers and tabs above the playlist
-    height: calc(100vh - 15rem);
+    height: calc(100vh - 9rem);
     min-height: 41rem;
-
-    .posthog-3000 & {
-        height: calc(100vh - 9rem);
-    }
 }
 
 .SessionRecordingPreview {
diff --git a/frontend/src/scenes/settings/Settings.scss b/frontend/src/scenes/settings/Settings.scss
index 37b8f3daf2e94..b749083d2ca68 100644
--- a/frontend/src/scenes/settings/Settings.scss
+++ b/frontend/src/scenes/settings/Settings.scss
@@ -2,20 +2,16 @@
     display: flex;
     gap: 2rem;
     align-items: start;
-    margin-top: 1rem;
+    margin-top: 0;
 
     .Settings__sections {
         position: sticky;
-        top: 0.5rem;
+        top: 4rem;
         flex-shrink: 0;
         width: 20%;
         min-width: 14rem;
         max-width: 20rem;
 
-        .posthog-3000 & {
-            top: 4rem;
-        }
-
         .SidePanel3000 & {
             top: 0;
         }
@@ -33,7 +29,6 @@
         }
     }
 
-    .posthog-3000 &,
     .LemonModal & {
         margin-top: 0;
     }
diff --git a/frontend/src/styles/global.scss b/frontend/src/styles/global.scss
index 2140b3aad166d..80ad3b4e660e5 100644
--- a/frontend/src/styles/global.scss
+++ b/frontend/src/styles/global.scss
@@ -53,16 +53,12 @@ input[type='radio'] {
     gap: 0.5rem 1rem;
     align-items: center;
     min-height: 2.5rem;
-    margin: 1.25rem 0 0.25rem;
+    margin: 1rem 0 0.25rem;
 
     .ant-form-item {
         margin-bottom: 0 !important;
     }
 
-    .posthog-3000 & {
-        margin-top: 1rem;
-    }
-
     @include screen($md) {
         flex-wrap: nowrap;
     }
@@ -177,14 +173,10 @@ input::-ms-clear {
     font-family: var(--font-sans);
     font-size: 1rem;
     cursor: unset;
-    border: 1px solid var(--border);
+    border: 1px solid var(--secondary-3000-button-border);
     border-radius: var(--radius);
     box-shadow: var(--shadow-elevation);
     opacity: 1 !important;
-
-    .posthog-3000 & {
-        border-color: var(--secondary-3000-button-border);
-    }
 }
 
 .Toastify__toast-container {
@@ -481,6 +473,9 @@ body {
     --link: var(--primary-3000);
     --tooltip-bg: var(--bg-charcoal);
     --data-color-1-hover: #1d4affe5;
+    --shadow-elevation: var(--shadow-elevation-3000);
+    --primary: var(--primary-3000);
+    --primary-highlight: var(--primary-3000-highlight);
 
     // Remove below once we're using Tailwind's base
     --tw-ring-offset-width: 0px;
@@ -496,69 +491,50 @@ body {
     --tw-scale-y: 1;
 
     touch-action: manipulation; // Disable double-tap-to-zoom on mobile, making taps slightly snappier
+    background: var(--bg-3000);
 
     &.posthog-3000[theme='light'] {
         @include light-mode-3000-variables;
     }
 
     &.posthog-3000[theme='dark'] {
-        @include dark-mode-3000-variables;
-    }
-
-    &.posthog-3000 {
-        --shadow-elevation: var(--shadow-elevation-3000);
-        --primary: var(--primary-3000);
-        --primary-highlight: var(--primary-3000-highlight);
-
-        background: var(--bg-3000);
+        .ant-empty-img-simple-path {
+            fill: var(--border-3000);
+        }
 
-        .non-3000 {
-            // Helper to hide non-3000 elements without JS
-            display: none;
+        .ant-empty-img-simple-ellipse {
+            fill: var(--border-3000);
         }
 
-        .LemonButton,
-        .Link {
-            .text-link {
-                color: var(--text-3000);
-            }
+        @include dark-mode-3000-variables;
+    }
 
-            &:hover {
-                .text-link {
-                    color: var(--primary-3000);
-                }
-            }
+    * > {
+        ::-webkit-scrollbar {
+            width: 0.5rem;
+            height: 0.5rem;
         }
 
-        * > {
-            ::-webkit-scrollbar {
-                width: 0.5rem;
-                height: 0.5rem;
-            }
-
-            ::-webkit-scrollbar-track {
-                background: var(--accent-3000);
-            }
+        ::-webkit-scrollbar-track {
+            background: var(--accent-3000);
+        }
 
-            ::-webkit-scrollbar-thumb {
-                background: var(--trace-3000);
-                border-radius: var(--radius);
+        ::-webkit-scrollbar-thumb {
+            background: var(--trace-3000);
+            border-radius: var(--radius);
 
-                &:hover {
-                    background: var(--muted-3000);
-                }
+            &:hover {
+                background: var(--muted-3000);
             }
         }
+    }
 
-        h1,
-        h2,
-        h3,
-        h4,
-        h5 {
-            font-family: var(--font-title);
-        }
-
-        @include posthog-3000-variables;
+    h1,
+    h2,
+    h3,
+    h4,
+    h5 {
+        font-family: var(--font-title);
     }
 
     h1,
@@ -589,6 +565,19 @@ body {
         color: var(--link);
     }
 
+    .LemonButton,
+    .Link {
+        .text-link {
+            color: var(--text-3000);
+        }
+
+        &:hover {
+            .text-link {
+                color: var(--primary-3000);
+            }
+        }
+    }
+
     // AntD uses its own border color for the bottom of tab lists, but we want to use `var(--border)`
     .ant-tabs-top,
     .ant-tabs-bottom {
@@ -707,6 +696,8 @@ body {
     .ant-table-tbody > tr.ant-table-placeholder:hover > td {
         background: inherit;
     }
+
+    @include posthog-3000-variables;
 }
 
 .storybook-test-runner {
@@ -721,7 +712,7 @@ body {
     }
 
     // Hide some parts of the UI that were causing flakiness
-    ::-webkit-scrollbar, // Scrollbar in WebKit/Blink browsers
+    ::-webkit-scrollbar, * > ::-webkit-scrollbar, // Scrollbar in WebKit/Blink browsers
     .LemonTabs__bar::after, // Active tab slider
     .scrollable::after, // Scrollability indicators
     .scrollable::before {
@@ -729,21 +720,9 @@ body {
     }
 }
 
-.posthog-3000 {
-    .ant-radio-button-wrapper {
-        background: var(--secondary-3000);
-        border-color: transparent;
-    }
-}
-
-.posthog-3000[theme='dark'] {
-    .ant-empty-img-simple-path {
-        fill: var(--border-3000);
-    }
-
-    .ant-empty-img-simple-ellipse {
-        fill: var(--border-3000);
-    }
+.ant-radio-button-wrapper {
+    background: var(--secondary-3000);
+    border-color: transparent;
 }
 
 .ligatures-none {