diff --git a/src/assets/css/_transitions.scss b/src/assets/css/_transitions.scss
index 72a8bf06c..0bf1b6c91 100644
--- a/src/assets/css/_transitions.scss
+++ b/src/assets/css/_transitions.scss
@@ -18,3 +18,22 @@
     transition-timing-function: ease-in;
   }
 }
+
+.scroll-up- {
+  &enter {
+    transform: translateY(100%);
+  }
+  &leave-to {
+    transform: translateY(-100%);
+  }
+
+  &enter-active,
+  &leave-active {
+    transition-property: opacity, transform !important;
+    transition-duration: 2s;
+  }
+  &enter-active,
+  &leave-active {
+    transition-timing-function: cubic-bezier(0.7, 0, 0.25, 1);
+  }
+}
diff --git a/src/components/SiteMenuForMobile.vue b/src/components/SiteMenuForMobile.vue
index 601156d45..a4bd25933 100644
--- a/src/components/SiteMenuForMobile.vue
+++ b/src/components/SiteMenuForMobile.vue
@@ -1,7 +1,7 @@
 <template>
   <div class="fixed inset-0 z-50 bg-black bg-opacity-[30%]">
     <div
-      class="flex flex-col items-center gap-[22px] w-full bg-white pl-[16px] pr-[8px] py-[28px]"
+      class="flex flex-col items-center gap-[22px] w-full bg-white pl-[16px] pr-[8px] pt-[40px] pb-[28px]"
     >
       <header
         class="flex items-center justify-between w-full text-like-green mb-[10px]"
diff --git a/src/components/SiteTopBanner.vue b/src/components/SiteTopBanner.vue
new file mode 100644
index 000000000..4cd3748bf
--- /dev/null
+++ b/src/components/SiteTopBanner.vue
@@ -0,0 +1,130 @@
+<template>
+  <Transition @enter="handleBannerEnter" @leave="handleBannerLeave">
+    <div
+      v-if="isShowBanner"
+      :class="[
+        'relative',
+        'top-0',
+        'z-[500]',
+
+        'flex',
+        'items-center',
+        'justify-center',
+
+        'overflow-hidden',
+
+        'w-full',
+        'h-[40px]',
+
+        'text-white',
+        'bg-like-green',
+      ]"
+    >
+      <Transition name="scroll-up">
+        <div
+          :key="activeMessage"
+          :class="[
+            'absolute',
+            'inset-0',
+
+            'flex',
+            'justify-center',
+            'items-center',
+
+            'text-[14px]',
+            'text-center',
+          ]"
+          v-text="activeMessage"
+        />
+      </Transition>
+
+      <ButtonV2
+        preset="plain"
+        size="small"
+        class="absolute translate-y-[-50%] right-[12px] top-1/2"
+        @click="closeBanner"
+      >
+        <IconClose class="transform scale-75 laptop:scale-100" />
+      </ButtonV2>
+    </div>
+  </Transition>
+</template>
+
+<script>
+const LAST_CLOSED_AT_KEY = 'site-top-banner-last-closed-at';
+
+export default {
+  name: 'SiteTopBanner',
+  props: {
+    messages: {
+      type: Array,
+      default: () => [],
+    },
+    interval: {
+      type: Number,
+      default: 4000,
+    },
+  },
+  data() {
+    return {
+      isShowBanner: false,
+      activeMessageIndex: 0,
+    };
+  },
+  computed: {
+    activeMessage() {
+      return this.messages[this.activeMessageIndex];
+    },
+  },
+  mounted() {
+    this.showBannerIfPossible();
+  },
+  beforeDestroy() {
+    this.clearInterval();
+  },
+  methods: {
+    handleBannerEnter(el, done) {
+      this.$gsap.gsap.from(el, {
+        height: 0,
+        duration: 0.5,
+        onComplete: done,
+      });
+    },
+    handleBannerLeave(el, done) {
+      this.$gsap.gsap.to(el, {
+        height: 0,
+        duration: 0.5,
+        onComplete: done,
+      });
+    },
+    nextMessage() {
+      this.activeMessageIndex =
+        (this.activeMessageIndex + 1) % this.messages.length;
+    },
+    clearInterval() {
+      if (this.messageInterval) {
+        clearInterval(this.messageInterval);
+        this.messageInterval = null;
+      }
+    },
+    closeBanner() {
+      this.isShowBanner = false;
+      try {
+        window.localStorage.setItem(LAST_CLOSED_AT_KEY, Date.now());
+      } finally {
+        this.clearInterval();
+      }
+    },
+    showBannerIfPossible() {
+      try {
+        const lastClosedTime = window.localStorage.getItem(LAST_CLOSED_AT_KEY);
+        const oneDay = 24 * 60 * 60 * 1000;
+        if (!lastClosedTime || Date.now() - lastClosedTime >= oneDay) {
+          this.isShowBanner = true;
+          this.messageInterval = setInterval(this.nextMessage, this.interval);
+        }
+      } catch {}
+    },
+  },
+};
+</script>
diff --git a/src/components/SiteTopBannerForChristmas.vue b/src/components/SiteTopBannerForChristmas.vue
new file mode 100644
index 000000000..7a3f24e94
--- /dev/null
+++ b/src/components/SiteTopBannerForChristmas.vue
@@ -0,0 +1,15 @@
+<template>
+  <SiteTopBanner
+    :messages="[
+      $t('christmas_campaign_text_1'),
+      $t('christmas_campaign_text_2'),
+      $t('christmas_campaign_text_3'),
+    ]"
+  />
+</template>
+
+<script>
+export default {
+  name: 'SiteTopBannerForChristmas',
+};
+</script>
diff --git a/src/layouts/default.vue b/src/layouts/default.vue
index 96761aea3..d35d3fbdf 100644
--- a/src/layouts/default.vue
+++ b/src/layouts/default.vue
@@ -1,5 +1,6 @@
 <template>
   <div class="flex flex-col items-stretch min-h-screen">
+    <SiteTopBannerForChristmas />
     <!-- <AlertBanner
       v-if="getRouteBaseName($route) !== 'nft-class-classId' && $route.params.classId !== alertBannerNFTClassId"
       :primary-button-text="$t('alert_banner_actions_purchase')"
diff --git a/src/layouts/index.vue b/src/layouts/index.vue
index 4cc7ab307..03f690ae3 100644
--- a/src/layouts/index.vue
+++ b/src/layouts/index.vue
@@ -3,6 +3,7 @@
     <AlertBanner v-if="uiIsChainUpgrading">{{
       $t('notice_chain_upgrading')
     }}</AlertBanner>
+    <SiteTopBannerForChristmas />
 
     <nuxt
       :class="[
diff --git a/src/locales/en.json b/src/locales/en.json
index 572e81ca3..b875dbe20 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -90,6 +90,9 @@
   "cart_item_free_not_supported": "Free items cannot be added to cart",
   "cart_item_tipping": "Price includes a tip of {amount} USD",
   "cart_purchase_channel": "via {from}",
+  "christmas_campaign_text_1": "🎄 Christmas exclusive discount until DEC 31 🎄",
+  "christmas_campaign_text_2": "⭐️ Enjoy 15% off on order over $9 USD ⭐️",
+  "christmas_campaign_text_3": "Code \"XMASREAD\" will be applied automatically",
   "civic_dashboard_v3_about_url": "https://docs.like.co/user-guide/civic-liker",
   "civic_dashboard_v3_banner_book_nft": "NFT BOOK",
   "civic_dashboard_v3_banner_book_nft_description": "unleashes the potential value of ebooks, elevating the essence of books, making them books, yet no longer just books",
@@ -981,11 +984,14 @@
     "language": "Language",
     "title": "Settings"
   },
+  "shopping_cart_checkoutd": "Checkout",
   "shopping_cart_checkout_button_by_card": "Checkout by card",
   "shopping_cart_checkout_button_by_LIKE": "Checkout by LIKE",
   "shopping_cart_empty_notice": "Shopping cart is empty",
   "shopping_cart_empty_notice_button": "Browse Bookstore",
   "shopping_cart_error_insufficient_balance": "Insufficient balance, you only have {balance}",
+  "shopping_cart_list_coupon_title": "Discount (if applicable)",
+  "shopping_cart_list_coupon_text": "Calculated at next step",
   "shopping_cart_list_header_item": "Item",
   "shopping_cart_list_header_price": "Price",
   "shopping_cart_list_header_quantity": "Quantity",
diff --git a/src/locales/zh-Hant.json b/src/locales/zh-Hant.json
index 5471c3a5b..18acafbb0 100644
--- a/src/locales/zh-Hant.json
+++ b/src/locales/zh-Hant.json
@@ -90,6 +90,9 @@
   "cart_item_free_not_supported": "購物車暫不支援免費收藏",
   "cart_item_tipping": "單價已含小額打賞 {amount} USD",
   "cart_purchase_channel": "透過 {from}",
+  "christmas_campaign_text_1": "🎄 聖誕限時優惠至12月31號 🎄",
+  "christmas_campaign_text_2": "⭐️ 凡購買滿 $9 USD 即享全單85折 ⭐️",
+  "christmas_campaign_text_3": "優惠碼 \"XMASREAD\" 將自動套用",
   "civic_dashboard_v3_about_url": "https://docs.like.co/v/zh/user-guide/civic-liker",
   "civic_dashboard_v3_banner_book_nft": "NFT BOOK",
   "civic_dashboard_v3_banner_book_nft_description": "Liker Land 也解放電子書的潛在價值，昇華書的本質，令書不再只是書。",
@@ -981,11 +984,14 @@
     "language": "介面語言",
     "title": "設定"
   },
+  "shopping_cart_checkout": "結帳",
   "shopping_cart_checkout_button_by_card": "以信用卡結帳",
   "shopping_cart_checkout_button_by_LIKE": "以 LIKE 結帳",
   "shopping_cart_empty_notice": "購物車是空的",
   "shopping_cart_empty_notice_button": "瀏覽書店",
   "shopping_cart_error_insufficient_balance": "餘額不足，你只有 {balance}",
+  "shopping_cart_list_coupon_title": "優惠(如適用)",
+  "shopping_cart_list_coupon_text": "將於下一步計算",
   "shopping_cart_list_header_item": "購物明細",
   "shopping_cart_list_header_price": "單價",
   "shopping_cart_list_header_quantity": "數量",
diff --git a/src/pages/shopping-cart/book.vue b/src/pages/shopping-cart/book.vue
index ba1f7ab8f..bbc225de5 100644
--- a/src/pages/shopping-cart/book.vue
+++ b/src/pages/shopping-cart/book.vue
@@ -73,6 +73,16 @@
       <footer
         class="grid grid-cols-6 items-center gap-[1em] mt-[1em] text-right"
       >
+        <div
+          class="col-span-3 sm:col-span-4 text-medium-gray text-[14px] font-200"
+        >
+          {{ $t('shopping_cart_list_coupon_title') }}
+        </div>
+        <div
+          class="col-span-3 sm:col-span-2 text-medium-gray text-[14px] font-400"
+        >
+          {{ $t('shopping_cart_list_coupon_text') }}
+        </div>
         <div class="col-span-3 sm:col-span-4 text-gray-4a">
           {{ $t('shopping_cart_list_total_price') }}
         </div>
@@ -84,25 +94,24 @@
       </footer>
 
       <div class="flex justify-end mt-[2em]">
-        <div class="flex gap-[1em]">
-          <ButtonV2
-            v-if="giftInfo"
-            class="min-w-[120px]"
-            preset="outline"
-            :text="$t('nft_edition_select_confirm_button_text_gift')"
-            @click="handleClickGiftButton"
-          >
-            <template #prepend>
-              <IconGift class="w-[16px]" />
-            </template>
-          </ButtonV2>
-          <EventModalCollectMethodButton
-            :title="$t('shopping_cart_checkout_button_by_card')"
-            type="stripe"
-            :price="formattedFiatPrice"
-            @click="_ => handleClickCheckoutByFiatButton()"
-          />
-        </div>
+        <ButtonV2
+          v-if="giftInfo"
+          class="min-w-[120px]"
+          preset="outline"
+          :text="$t('nft_edition_select_confirm_button_text_gift')"
+          @click="handleClickGiftButton"
+        >
+          <template #prepend>
+            <IconGift class="w-[16px]" />
+          </template>
+        </ButtonV2>
+      </div>
+      <div class="grid w-full grid-cols-6">
+        <ButtonV2
+          class="w-full col-span-3 col-start-4 sm:col-span-2 sm:col-start-5"
+          :text="$t('shopping_cart_checkout')"
+          @click="handleClickCheckoutByFiatButton()"
+        />
       </div>
     </CardV2>
 
@@ -145,6 +154,9 @@ import { getNFTBookCartPurchaseLink } from '~/util/api';
 import nftMixin from '~/mixins/nft';
 import alertMixin from '~/mixins/alert';
 
+const CHRISTMAS_CAMPAIGN_MIN_SPEND = 9;
+const CHRISTMAS_CAMPAIGN_COUPON = 'XMASREAD';
+
 export default {
   name: 'ShoppingCartPage',
   filters: {
@@ -219,9 +231,32 @@ export default {
         return totalPrice + (unitPrice * item.quantity || 0);
       }, 0);
     },
+    totalItemPriceInUSD() {
+      return this.shoppingCartBookItems.reduce((totalPrice, item) => {
+        let itemPrice = 0;
+        if (item.collectionId) {
+          itemPrice = this.getNFTCollectionPriceByCollectionId(
+            item.collectionId
+          );
+        } else {
+          const edition = this.getNFTBookStorePriceByClassIdAndIndex(
+            item.productId,
+            item.classId ? item.priceIndex : undefined
+          );
+          itemPrice = edition?.price || 0;
+        }
+        return totalPrice + (itemPrice * item.quantity || 0);
+      }, 0);
+    },
     formattedFiatPrice() {
       return formatNumberWithUSD(this.totalNFTPriceInUSD);
     },
+    getApplicableCoupon() {
+      if (this.coupon) return this.coupon;
+      return this.totalItemPriceInUSD > CHRISTMAS_CAMPAIGN_MIN_SPEND
+        ? CHRISTMAS_CAMPAIGN_COUPON
+        : '';
+    },
   },
   mounted() {
     logPurchaseFlowEvent(this, 'view_cart', this.purchaseEventParams);
@@ -352,7 +387,7 @@ export default {
             fbClickId: this.fbClickId,
             items: this.shoppingCartBookItems,
             email: this.walletEmail,
-            coupon: this.coupon,
+            coupon: this.getApplicableCoupon,
             giftInfo,
           },
           {