diff --git a/assets/css/design.css b/assets/css/design.css
new file mode 100644
index 0000000..4f6c140
--- /dev/null
+++ b/assets/css/design.css
@@ -0,0 +1,342 @@
+/*
+ * SewJoy Theme - Design Yours / Custom Design Flow Stylesheet
+ *
+ * Renders the "Custom Design Flow Light- Home" frame
+ * (design/homepage-wireframe.pen → M1SPz). Reuses home.css tokens for
+ * the cream surface + nav/footer + bond-card; adds the splash carousel,
+ * the three-series wrapper, and the Featured Designs card family.
+ *
+ * Design tokens mirrored for self-sufficiency.
+ */
+
+:root {
+    --cream:        #F8F5F0;
+    --dark:         #1A1A1A;
+    --white:        #FFFFFF;
+    --accent:       #C8956C;
+    --text-primary: #1A1A1A;
+    --text-muted:   #8C7B6E;
+    --text-soft:    #3D3530;
+    --border:       #E8E0D5;
+    --font-display: 'Playfair Display', Georgia, serif;
+    --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
+    --shadow-card:  0 2px 10px rgba(0, 0, 0, 0.06);
+    --shadow-hover: 0 8px 24px rgba(44, 36, 22, 0.08);
+}
+
+/* ============================================
+   DY SPLASH — 3-step carousel
+   ============================================ */
+.dy-splash {
+    position: relative;
+    width: 100%;
+    height: 480px;
+    background-color: var(--white);
+    overflow: hidden;
+}
+
+.dy-splash__viewport {
+    position: relative;
+    width: 100%;
+    height: 100%;
+}
+
+.dy-splash__slide {
+    position: absolute;
+    inset: 0;
+    opacity: 0;
+    transition: opacity 0.35s ease;
+    pointer-events: none;
+}
+
+.dy-splash__slide.is-active {
+    opacity: 1;
+    pointer-events: auto;
+}
+
+.dy-splash__image {
+    position: absolute;
+    inset: 0;
+    background-color: var(--slide-tone, #F0E8DC);
+}
+
+.dy-splash__overlay {
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+    width: 560px;
+    max-width: calc(100% - 80px);
+    display: flex;
+    flex-direction: column;
+    gap: 16px;
+    text-align: center;
+}
+
+.dy-splash__eyebrow {
+    font-family: var(--font-body);
+    font-size: 11px;
+    font-weight: 600;
+    letter-spacing: 3px;
+    color: var(--accent);
+}
+
+.dy-splash__title {
+    margin: 0;
+    font-family: var(--font-display);
+    font-size: clamp(36px, 5vw, 56px);
+    font-weight: 700;
+    line-height: 1.1;
+    color: var(--text-primary);
+}
+
+.dy-splash__desc {
+    margin: 0;
+    font-family: var(--font-body);
+    font-size: 15px;
+    font-weight: 400;
+    line-height: 1.5;
+    color: var(--text-soft);
+}
+
+/* Arrows */
+.dy-splash__arrow {
+    position: absolute;
+    top: 50%;
+    transform: translateY(-50%);
+    width: 48px;
+    height: 48px;
+    border-radius: 50%;
+    background-color: rgba(255, 255, 255, 0.4);
+    border: 0;
+    color: var(--text-primary);
+    font-size: 32px;
+    font-weight: 700;
+    line-height: 1;
+    cursor: pointer;
+    transition: background-color 0.15s ease;
+    z-index: 2;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.dy-splash__arrow:hover {
+    background-color: rgba(255, 255, 255, 0.8);
+}
+
+.dy-splash__arrow--prev { left: 32px; }
+.dy-splash__arrow--next { right: 32px; }
+
+/* Dots */
+.dy-splash__dots {
+    position: absolute;
+    bottom: 22px;
+    left: 50%;
+    transform: translateX(-50%);
+    display: flex;
+    gap: 8px;
+    z-index: 2;
+}
+
+.dy-splash__dot {
+    width: 8px;
+    height: 8px;
+    border-radius: 4px;
+    background-color: var(--border);
+    border: 0;
+    padding: 0;
+    cursor: pointer;
+    transition: background-color 0.15s ease, width 0.2s ease;
+}
+
+.dy-splash__dot.is-active {
+    width: 32px;
+    background-color: var(--accent);
+}
+
+/* ============================================
+   DY THREE SERIES — reuses .bond-card* from home.css
+   ============================================ */
+.dy-three-series {
+    background-color: var(--cream);
+    padding: 56px 0;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 28px;
+}
+
+.dy-three-series__header {
+    text-align: center;
+    display: flex;
+    flex-direction: column;
+    gap: 6px;
+}
+
+.dy-three-series__heading {
+    margin: 0;
+    font-family: var(--font-display);
+    font-size: clamp(26px, 3vw, 32px);
+    font-weight: 700;
+    letter-spacing: 3px;
+    color: var(--text-primary);
+}
+
+.dy-three-series__subtitle {
+    margin: 0;
+    font-family: var(--font-body);
+    font-size: 13px;
+    color: var(--text-muted);
+}
+
+.dy-three-series__cards {
+    display: grid;
+    grid-template-columns: repeat(3, 1fr);
+    gap: 24px;
+    width: 100%;
+    padding: 0; /* matches home tailored-bond: align flush with page edges */
+}
+
+/* ============================================
+   DY FEATURED DESIGNS — 4 hardcoded cards
+   ============================================ */
+.dy-featured {
+    background-color: var(--white);
+    padding: 64px;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 32px;
+}
+
+.dy-featured__header {
+    text-align: center;
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+}
+
+.dy-featured__heading {
+    margin: 0;
+    font-family: var(--font-display);
+    font-size: clamp(28px, 3.5vw, 36px);
+    font-weight: 700;
+    color: var(--text-primary);
+}
+
+.dy-featured__subhead {
+    margin: 0;
+    font-family: var(--font-body);
+    font-size: 14px;
+    font-weight: 400;
+    color: var(--text-muted);
+}
+
+.dy-featured__row {
+    display: grid;
+    grid-template-columns: repeat(4, 1fr);
+    gap: 24px;
+    width: 100%;
+}
+
+.dy-feat-card {
+    background-color: var(--white);
+    border-radius: 8px;
+    overflow: hidden;
+    box-shadow: var(--shadow-card);
+    transition: transform 0.2s ease, box-shadow 0.2s ease;
+}
+
+.dy-feat-card:hover {
+    transform: translateY(-4px);
+    box-shadow: var(--shadow-hover);
+}
+
+.dy-feat-card__media {
+    height: 220px;
+    background-color: var(--card-tone, #E8E0D5);
+}
+
+.dy-feat-card__body {
+    display: flex;
+    flex-direction: column;
+    gap: 4px;
+    padding: 20px 24px;
+}
+
+.dy-feat-card__title {
+    margin: 0;
+    font-family: var(--font-display);
+    font-size: 18px;
+    font-weight: 700;
+    color: var(--text-primary);
+    line-height: 1.3;
+}
+
+.dy-feat-card__maker {
+    font-family: var(--font-body);
+    font-size: 11px;
+    font-weight: 400;
+    letter-spacing: 1px;
+    color: var(--text-muted);
+}
+
+.dy-feat-card__cta {
+    display: inline-flex;
+    align-items: center;
+    gap: 6px;
+    padding-top: 10px;
+    font-family: var(--font-body);
+    font-size: 11px;
+    font-weight: 600;
+    letter-spacing: 1.5px;
+    color: var(--text-primary);
+    text-decoration: none;
+}
+
+.dy-feat-card__cta:hover {
+    color: var(--accent);
+}
+
+/* ============================================
+   RESPONSIVE
+   ============================================ */
+@media screen and (max-width: 1024px) {
+    .dy-splash { height: 400px; }
+    .dy-splash__overlay { width: 480px; }
+    .dy-splash__arrow--prev { left: 16px; }
+    .dy-splash__arrow--next { right: 16px; }
+
+    .dy-three-series__cards {
+        grid-template-columns: repeat(2, 1fr);
+    }
+
+    .dy-featured { padding: 48px 32px; }
+    .dy-featured__row {
+        grid-template-columns: repeat(2, 1fr);
+    }
+}
+
+@media screen and (max-width: 720px) {
+    .dy-splash { height: 380px; }
+    .dy-splash__overlay {
+        width: calc(100% - 80px);
+        gap: 12px;
+    }
+    .dy-splash__title { font-size: 32px; }
+    .dy-splash__desc { font-size: 14px; }
+    .dy-splash__arrow { width: 40px; height: 40px; font-size: 24px; }
+    .dy-splash__arrow--prev { left: 12px; }
+    .dy-splash__arrow--next { right: 12px; }
+
+    .dy-three-series { padding: 40px 20px; }
+    .dy-three-series__cards {
+        grid-template-columns: 1fr;
+    }
+
+    .dy-featured { padding: 36px 20px; }
+    .dy-featured__row {
+        grid-template-columns: 1fr;
+    }
+}
\ No newline at end of file
diff --git a/assets/css/shop.css b/assets/css/shop.css
new file mode 100644
index 0000000..3c60c0a
--- /dev/null
+++ b/assets/css/shop.css
@@ -0,0 +1,324 @@
+/*
+ * SewJoy Theme - Shop / Product List Stylesheet
+ *
+ * Renders the Basic Shopping Flow frame (design/homepage-wireframe.pen →
+ * OsAkV → BSF Product Grid Light). Reuses home.css tokens for the cream
+ * surface + nav/footer; adds the filter bar, product card family, layout
+ * switcher, and pagination.
+ *
+ * Design tokens mirror home.css for self-sufficiency.
+ */
+
+:root {
+    --cream:        #F8F5F0;
+    --dark:         #1A1A1A;
+    --white:        #FFFFFF;
+    --accent:       #C8956C;
+    --text-primary: #1A1A1A;
+    --text-muted:   #8C7B6E;
+    --text-soft:    #3D3530;
+    --border:       #E8E0D5;
+    --font-display: 'Playfair Display', Georgia, serif;
+    --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
+    --shadow-card:  0 2px 8px rgba(0, 0, 0, 0.06);
+    --shadow-hover: 0 8px 24px rgba(44, 36, 22, 0.08);
+}
+
+/* ============================================
+   SHOP SECTION (lives inside .home)
+   ============================================ */
+.shop {
+    background-color: var(--cream);
+}
+
+/* ============================================
+   FILTER BAR / TOOLBAR
+   ============================================ */
+.shop__toolbar {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    height: 72px;
+    padding: 20px 64px;
+    background-color: var(--cream);
+    border-top: 1px solid transparent;
+}
+
+.shop__filters,
+.shop__sort-group {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+}
+
+.shop__spacer {
+    flex: 1 1 auto;
+}
+
+/* Filter pill (used for Style / Fabric / Sort / search input) */
+.filter-pill {
+    display: inline-flex;
+    align-items: center;
+    gap: 10px;
+    padding: 10px 14px;
+    background-color: var(--white);
+    border: 1px solid var(--border);
+    border-radius: 4px;
+    color: var(--text-primary);
+    font-family: inherit;
+    font-size: 12px;
+    font-weight: 400;
+    line-height: 1;
+    cursor: pointer;
+    transition: border-color 0.15s ease, color 0.15s ease;
+}
+
+.filter-pill:hover {
+    border-color: var(--accent);
+    color: var(--accent);
+}
+
+.filter-pill__caret {
+    font-size: 10px;
+    color: var(--text-muted);
+}
+
+.filter-pill--search {
+    width: 280px;
+    color: #B8A99A;
+    cursor: text;
+}
+
+.filter-pill--search::placeholder {
+    color: #B8A99A;
+    opacity: 1;
+}
+
+.filter-pill--search:hover {
+    color: var(--text-primary);
+    border-color: var(--border);
+}
+
+/* Layout switcher (segmented control: Waterfall / Grid / List) */
+.shop-layout {
+    display: flex;
+    align-items: center;
+    background-color: var(--white);
+    border: 1px solid var(--border);
+    border-radius: 4px;
+    overflow: hidden;
+}
+
+.shop-layout__btn {
+    padding: 10px 12px;
+    background-color: var(--white);
+    border: 0;
+    color: var(--text-muted);
+    font-size: 14px;
+    line-height: 1;
+    cursor: pointer;
+    transition: background-color 0.15s ease, color 0.15s ease;
+}
+
+.shop-layout__btn + .shop-layout__btn {
+    border-left: 1px solid var(--border);
+}
+
+.shop-layout__btn:hover {
+    color: var(--text-primary);
+}
+
+.shop-layout__btn.is-active,
+.shop-layout__btn.is-active:hover {
+    background-color: var(--dark);
+    color: var(--white);
+}
+
+/* ============================================
+   PRODUCT GRID (CSS columns waterfall)
+   ============================================ */
+.shop__grid {
+    display: block; /* reset from any inherited flex/grid */
+    padding: 24px 64px 32px;
+    columns: 3;
+    column-gap: 24px;
+}
+
+.product-card {
+    break-inside: avoid;
+    -webkit-column-break-inside: avoid;
+    page-break-inside: avoid;
+    display: block;
+    width: 100%;
+    margin: 0 0 24px;
+    background-color: var(--white);
+    border-radius: 6px;
+    overflow: hidden;
+    box-shadow: var(--shadow-card);
+    transition: transform 0.2s ease, box-shadow 0.2s ease;
+}
+
+.product-card:hover {
+    transform: translateY(-4px);
+    box-shadow: var(--shadow-hover);
+}
+
+.product-card__media {
+    display: block;
+    width: 100%;
+    height: var(--card-media-h, 400px);
+    background-color: var(--card-tone, #E8E0D5);
+}
+
+.product-card__body {
+    display: flex;
+    flex-direction: column;
+    gap: 4px;
+    padding: 16px;
+}
+
+.product-card__title {
+    margin: 0;
+    font-family: var(--font-display);
+    font-size: 16px;
+    font-weight: 700;
+    color: var(--text-primary);
+    line-height: 1.3;
+}
+
+.product-card__price {
+    font-family: var(--font-body);
+    font-size: 13px;
+    font-weight: 600;
+    color: var(--accent);
+}
+
+/* ============================================
+   PAGINATION
+   ============================================ */
+.shop__pagination {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 16px;
+    padding: 24px 64px 40px;
+    background-color: var(--cream);
+}
+
+.shop__results {
+    font-size: 12px;
+    color: var(--text-muted);
+}
+
+.shop__pager {
+    display: flex;
+    align-items: center;
+    gap: 8px;
+}
+
+.shop__page-link {
+    font-family: var(--font-body);
+    font-size: 12px;
+    font-weight: 400;
+    color: var(--text-muted);
+    text-decoration: none;
+    padding: 4px 8px;
+    border-radius: 3px;
+    transition: color 0.15s ease;
+    cursor: pointer;
+}
+
+.shop__page-link:hover {
+    color: var(--text-primary);
+}
+
+.shop__page-link.is-current,
+.shop__page-link.is-current:hover {
+    color: var(--text-primary);
+    font-weight: 600;
+    cursor: default;
+}
+
+.shop__page-link--nav {
+    font-weight: 600;
+    color: var(--text-primary);
+}
+
+.shop__page-link--nav:hover {
+    color: var(--accent);
+}
+
+.shop__page-link--ellipsis {
+    cursor: default;
+    padding: 4px 4px;
+}
+
+/* ============================================
+   RESPONSIVE
+   ============================================ */
+@media screen and (max-width: 1024px) {
+    .shop__toolbar {
+        padding: 20px 32px;
+        flex-wrap: wrap;
+        height: auto;
+        gap: 10px;
+    }
+
+    .shop__spacer {
+        flex-basis: 100%;
+        flex-grow: 0;
+        height: 0;
+    }
+
+    .shop__grid {
+        padding: 24px 32px;
+        columns: 2;
+        column-gap: 20px;
+    }
+
+    .shop__pagination {
+        padding: 20px 32px 32px;
+        flex-wrap: wrap;
+        gap: 12px;
+    }
+}
+
+@media screen and (max-width: 720px) {
+    .shop__toolbar {
+        padding: 16px 20px;
+    }
+
+    .shop__filters,
+    .shop__sort-group {
+        flex-wrap: wrap;
+        gap: 8px;
+    }
+
+    .filter-pill--search {
+        width: 100%;
+    }
+
+    .shop-layout {
+        display: none; /* hide layout switcher on mobile */
+    }
+
+    .shop__grid {
+        padding: 16px 20px 24px;
+        columns: 1;
+        column-gap: 0;
+    }
+
+    .product-card {
+        margin-bottom: 16px;
+    }
+
+    .shop__pagination {
+        flex-direction: column;
+        align-items: flex-start;
+        padding: 16px 20px 28px;
+    }
+
+    .shop__pager {
+        flex-wrap: wrap;
+    }
+}
\ No newline at end of file
diff --git a/assets/js/design.js b/assets/js/design.js
new file mode 100644
index 0000000..a2420f2
--- /dev/null
+++ b/assets/js/design.js
@@ -0,0 +1,67 @@
+/*
+ * SewJoy Theme - Custom Design Flow splash carousel
+ *
+ * Cycles .dy-splash__slide children via the .is-active class. Left/right
+ * arrows and the 3 dots at the bottom both drive navigation, with
+ * wrap-around at the ends. Keyboard arrow support when the carousel
+ * region has focus.
+ */
+(function ($) {
+    'use strict';
+
+    $(function () {
+        var $splash = $('.dy-splash');
+        if (!$splash.length) {
+            return;
+        }
+
+        var $slides = $splash.find('.dy-splash__slide');
+        var $dots   = $splash.find('.dy-splash__dot');
+        var count   = $slides.length;
+
+        if (count === 0) {
+            return;
+        }
+
+        var current = 0;
+
+        function go(target) {
+            // Wrap-around so negative indices and >= count both loop.
+            var next = ((target % count) + count) % count;
+            if (next === current) {
+                return;
+            }
+            $slides.removeClass('is-active').eq(next).addClass('is-active');
+            $dots.removeClass('is-active').attr('aria-selected', 'false')
+                 .eq(next).addClass('is-active').attr('aria-selected', 'true');
+            current = next;
+        }
+
+        $splash.on('click', '.dy-splash__arrow--prev', function () {
+            go(current - 1);
+        });
+
+        $splash.on('click', '.dy-splash__arrow--next', function () {
+            go(current + 1);
+        });
+
+        $splash.on('click', '.dy-splash__dot', function () {
+            var target = parseInt($(this).attr('data-go'), 10);
+            if (!isNaN(target)) {
+                go(target);
+            }
+        });
+
+        // Keyboard arrow support — only when the carousel region is focused
+        // or its descendants are.
+        $splash.on('keydown', function (event) {
+            if (event.key === 'ArrowLeft') {
+                event.preventDefault();
+                go(current - 1);
+            } else if (event.key === 'ArrowRight') {
+                event.preventDefault();
+                go(current + 1);
+            }
+        });
+    });
+})(jQuery);
\ No newline at end of file