diff --git a/apps/portal/src/features/catalog/components/base/AddonGroup.tsx b/apps/portal/src/features/catalog/components/base/AddonGroup.tsx
index 0e378659..39e7d7fb 100644
--- a/apps/portal/src/features/catalog/components/base/AddonGroup.tsx
+++ b/apps/portal/src/features/catalog/components/base/AddonGroup.tsx
@@ -189,7 +189,7 @@ export function AddonGroup({
       })}
 
       {selectedAddonSkus.length === 0 && (
-        <div className="text-center py-4 text-gray-500">
+        <div className="text-center py-4 text-gray-500 transition-all duration-300 animate-in fade-in">
           <p>Select add-ons to enhance your service</p>
         </div>
       )}
diff --git a/apps/portal/src/features/catalog/components/base/AddressConfirmation.tsx b/apps/portal/src/features/catalog/components/base/AddressConfirmation.tsx
index 67767203..60da9d56 100644
--- a/apps/portal/src/features/catalog/components/base/AddressConfirmation.tsx
+++ b/apps/portal/src/features/catalog/components/base/AddressConfirmation.tsx
@@ -407,30 +407,28 @@ export function AddressConfirmation({
               )}
 
               {/* Action buttons */}
-              <div className="flex items-center justify-between pt-4 border-t border-gray-100">
-                <div className="flex items-center gap-3">
-                  {/* Primary action when pending for Internet orders */}
-                  {isInternetOrder && !addressConfirmed && !editing && (
-                    <Button
-                      type="button"
-                      onClick={handleConfirmAddress}
-                      onKeyDown={e => {
-                        if (e.key === "Enter" || e.key === " ") {
-                          e.preventDefault();
-                          e.stopPropagation();
-                        }
-                      }}
-                    >
-                      Confirm Address
-                    </Button>
-                  )}
-                </div>
+              <div className="flex items-center gap-3 pt-4 border-t border-gray-100">
+                {/* Primary action when pending for Internet orders */}
+                {isInternetOrder && !addressConfirmed && !editing && (
+                  <Button
+                    type="button"
+                    onClick={handleConfirmAddress}
+                    onKeyDown={e => {
+                      if (e.key === "Enter" || e.key === " ") {
+                        e.preventDefault();
+                        e.stopPropagation();
+                      }
+                    }}
+                  >
+                    Confirm Address
+                  </Button>
+                )}
 
-                {/* Edit button - always on the right */}
+                {/* Edit button */}
                 {billingInfo.isComplete && !editing && (
                   <Button type="button" variant="outline" size="sm" onClick={handleEdit}>
-                    <PencilIcon className="h-4 w-4 mr-1" />
-                    Edit Address
+                    <PencilIcon className="h-4 w-4" />
+                    <span className="ml-1.5">Edit Address</span>
                   </Button>
                 )}
               </div>
diff --git a/apps/portal/src/features/catalog/components/base/CardBadge.tsx b/apps/portal/src/features/catalog/components/base/CardBadge.tsx
new file mode 100644
index 00000000..377107b0
--- /dev/null
+++ b/apps/portal/src/features/catalog/components/base/CardBadge.tsx
@@ -0,0 +1,46 @@
+"use client";
+
+export type BadgeVariant = 
+  | "gold" 
+  | "platinum" 
+  | "silver" 
+  | "recommended" 
+  | "family" 
+  | "new" 
+  | "default";
+
+interface CardBadgeProps {
+  text: string;
+  variant?: BadgeVariant;
+  size?: "sm" | "md";
+}
+
+export function CardBadge({ text, variant = "default", size = "md" }: CardBadgeProps) {
+  const getVariantClasses = () => {
+    switch (variant) {
+      case "gold":
+        return "bg-yellow-50 text-yellow-700 border-yellow-200";
+      case "platinum":
+        return "bg-indigo-50 text-indigo-700 border-indigo-200";
+      case "silver":
+        return "bg-gray-50 text-gray-700 border-gray-200";
+      case "recommended":
+        return "bg-green-50 text-green-700 border-green-200";
+      case "family":
+        return "bg-blue-50 text-blue-700 border-blue-200";
+      case "new":
+        return "bg-purple-50 text-purple-700 border-purple-200";
+      default:
+        return "bg-gray-50 text-gray-700 border-gray-200";
+    }
+  };
+
+  const sizeClasses = size === "sm" ? "text-xs px-2 py-0.5" : "text-xs px-2.5 py-1";
+
+  return (
+    <span className={`${sizeClasses} rounded-full font-medium border ${getVariantClasses()}`}>
+      {text}
+    </span>
+  );
+}
+
diff --git a/apps/portal/src/features/catalog/components/base/CardPricing.tsx b/apps/portal/src/features/catalog/components/base/CardPricing.tsx
new file mode 100644
index 00000000..1d387e7a
--- /dev/null
+++ b/apps/portal/src/features/catalog/components/base/CardPricing.tsx
@@ -0,0 +1,78 @@
+"use client";
+
+import { CurrencyYenIcon } from "@heroicons/react/24/outline";
+
+interface CardPricingProps {
+  monthlyPrice?: number | null;
+  oneTimePrice?: number | null;
+  size?: "sm" | "md" | "lg";
+  alignment?: "left" | "right";
+}
+
+export function CardPricing({ 
+  monthlyPrice, 
+  oneTimePrice, 
+  size = "md",
+  alignment = "right" 
+}: CardPricingProps) {
+  const sizeClasses = {
+    sm: {
+      monthlyPrice: "text-xl",
+      monthlyLabel: "text-xs",
+      icon: "h-5 w-5",
+      oneTimePrice: "text-sm",
+      oneTimeLabel: "text-xs",
+    },
+    md: {
+      monthlyPrice: "text-2xl",
+      monthlyLabel: "text-sm",
+      icon: "h-6 w-6",
+      oneTimePrice: "text-base",
+      oneTimeLabel: "text-xs",
+    },
+    lg: {
+      monthlyPrice: "text-3xl",
+      monthlyLabel: "text-base",
+      icon: "h-7 w-7",
+      oneTimePrice: "text-lg",
+      oneTimeLabel: "text-sm",
+    },
+  };
+
+  const alignClass = alignment === "right" ? "text-right" : "text-left";
+  const justifyClass = alignment === "right" ? "justify-end" : "justify-start";
+
+  if (!monthlyPrice && !oneTimePrice) {
+    return null;
+  }
+
+  const classes = sizeClasses[size];
+
+  return (
+    <div className={`flex-shrink-0 ${alignClass}`}>
+      {monthlyPrice && monthlyPrice > 0 && (
+        <div className={`flex items-baseline gap-1 ${justifyClass}`}>
+          <CurrencyYenIcon className={`${classes.icon} text-gray-600`} />
+          <span className={`${classes.monthlyPrice} font-bold text-gray-900`}>
+            {monthlyPrice.toLocaleString()}
+          </span>
+          <span className={`${classes.monthlyLabel} text-gray-500 font-normal`}>
+            /month
+          </span>
+        </div>
+      )}
+      {oneTimePrice && oneTimePrice > 0 && (
+        <div className={`flex items-baseline gap-1 ${justifyClass} ${monthlyPrice ? "mt-1" : ""}`}>
+          <CurrencyYenIcon className={`h-4 w-4 text-orange-600`} />
+          <span className={`${classes.oneTimePrice} font-semibold text-orange-600`}>
+            {oneTimePrice.toLocaleString()}
+          </span>
+          <span className={`${classes.oneTimeLabel} text-orange-500`}>
+            one-time
+          </span>
+        </div>
+      )}
+    </div>
+  );
+}
+
diff --git a/apps/portal/src/features/catalog/components/base/index.ts b/apps/portal/src/features/catalog/components/base/index.ts
new file mode 100644
index 00000000..4dd7f5f7
--- /dev/null
+++ b/apps/portal/src/features/catalog/components/base/index.ts
@@ -0,0 +1,12 @@
+export { CardPricing } from "./CardPricing";
+export { CardBadge } from "./CardBadge";
+export type { BadgeVariant } from "./CardBadge";
+export { ProductCard } from "./ProductCard";
+export type { ProductCardProps } from "./ProductCard";
+export { CatalogHero } from "./CatalogHero";
+export type { CatalogHeroProps } from "./CatalogHero";
+export { CatalogBackLink } from "./CatalogBackLink";
+export { OrderSummary } from "./OrderSummary";
+export { PricingDisplay } from "./PricingDisplay";
+export type { PricingDisplayProps } from "./PricingDisplay";
+
diff --git a/apps/portal/src/features/catalog/components/common/FeatureCard.tsx b/apps/portal/src/features/catalog/components/common/FeatureCard.tsx
index 98bcbae5..f3bec459 100644
--- a/apps/portal/src/features/catalog/components/common/FeatureCard.tsx
+++ b/apps/portal/src/features/catalog/components/common/FeatureCard.tsx
@@ -1,7 +1,6 @@
 "use client";
 
 import React from "react";
-import { AnimatedCard } from "@/components/molecules/AnimatedCard/AnimatedCard";
 
 export function FeatureCard({
   icon,
@@ -13,12 +12,14 @@ export function FeatureCard({
   description: string;
 }) {
   return (
-    <AnimatedCard className="text-center p-6 rounded-2xl">
-      <div className="flex justify-center mb-6">
-        <div className="p-3 bg-gray-50 rounded-xl">{icon}</div>
+    <div className="flex items-start gap-4 p-6 bg-gray-50 rounded-xl border border-gray-100 transition-all duration-300 hover:shadow-md hover:border-gray-200">
+      <div className="flex-shrink-0">
+        {icon}
       </div>
-      <h3 className="text-xl font-bold text-gray-900 mb-3">{title}</h3>
-      <p className="text-gray-600 leading-relaxed">{description}</p>
-    </AnimatedCard>
+      <div>
+        <h3 className="text-lg font-semibold text-gray-900 mb-2">{title}</h3>
+        <p className="text-sm text-gray-600 leading-relaxed">{description}</p>
+      </div>
+    </div>
   );
 }
diff --git a/apps/portal/src/features/catalog/components/common/ServiceHeroCard.tsx b/apps/portal/src/features/catalog/components/common/ServiceHeroCard.tsx
index 3939d46e..cbf0fe74 100644
--- a/apps/portal/src/features/catalog/components/common/ServiceHeroCard.tsx
+++ b/apps/portal/src/features/catalog/components/common/ServiceHeroCard.tsx
@@ -22,38 +22,35 @@ export function ServiceHeroCard({
 }) {
   const colorClasses = {
     blue: {
-      bg: "bg-blue-50",
-      border: "border-blue-200",
       iconBg: "bg-blue-100",
       iconText: "text-blue-600",
-      button: "bg-blue-600 hover:bg-blue-700",
-      hoverBorder: "hover:border-blue-300",
+      border: "border-blue-100",
+      hoverBorder: "hover:border-blue-200",
     },
     green: {
-      bg: "bg-green-50",
-      border: "border-green-200",
       iconBg: "bg-green-100",
       iconText: "text-green-600",
-      button: "bg-green-600 hover:bg-green-700",
-      hoverBorder: "hover:border-green-300",
+      border: "border-green-100",
+      hoverBorder: "hover:border-green-200",
     },
     purple: {
-      bg: "bg-purple-50",
-      border: "border-purple-200",
       iconBg: "bg-purple-100",
       iconText: "text-purple-600",
-      button: "bg-purple-600 hover:bg-purple-700",
-      hoverBorder: "hover:border-purple-300",
+      border: "border-purple-100",
+      hoverBorder: "hover:border-purple-200",
     },
   } as const;
 
   const colors = colorClasses[color];
 
   return (
-    <AnimatedCard className="relative group rounded-3xl overflow-hidden h-full p-0">
-      <div className="p-8 h-full flex flex-col">
-        <div className="flex items-center gap-4 mb-6">
-          <div className={`p-4 rounded-xl ${colors.iconBg}`}>
+    <AnimatedCard 
+      className={`relative group rounded-2xl overflow-hidden h-full border-2 ${colors.border} ${colors.hoverBorder} transition-all duration-300 hover:shadow-lg hover:-translate-y-1`}
+    >
+      <div className="p-8 h-full flex flex-col bg-white">
+        {/* Icon and Title */}
+        <div className="flex items-start gap-4 mb-4">
+          <div className={`p-3 rounded-xl ${colors.iconBg} flex-shrink-0`}>
             <div className={colors.iconText}>{icon}</div>
           </div>
           <div>
@@ -61,32 +58,31 @@ export function ServiceHeroCard({
           </div>
         </div>
 
-        <p className="text-gray-600 mb-6 leading-relaxed">{description}</p>
+        {/* Description */}
+        <p className="text-sm text-gray-600 mb-6 leading-relaxed">{description}</p>
 
-        <ul className="space-y-3 mb-8 flex-grow">
+        {/* Features List */}
+        <ul className="space-y-2.5 mb-8 flex-grow">
           {features.map((feature, index) => (
-            <li key={index} className="flex items-center gap-3">
-              <div className={`w-2 h-2 rounded-full ${colors.button.split(" ")[0]}`} />
-              <span className="text-sm text-gray-700">{feature}</span>
+            <li key={index} className="flex items-start gap-2.5 text-sm text-gray-700">
+              <span className="text-green-600 mt-0.5 flex-shrink-0">✓</span>
+              <span>{feature}</span>
             </li>
           ))}
         </ul>
 
-        <div className="mt-auto relative z-10">
+        {/* Action Button */}
+        <div className="mt-auto">
           <Button
             as="a"
             href={href}
-            className="w-full font-semibold rounded-2xl relative z-10 group"
-            size="lg"
-            rightIcon={<ArrowRightIcon className="w-5 h-5" />}
+            className="w-full font-semibold rounded-xl"
+            rightIcon={<ArrowRightIcon className="w-4 h-4" />}
           >
             Explore Plans
           </Button>
         </div>
       </div>
-      <div
-        className={`absolute inset-0 ${colors.bg} opacity-0 group-hover:opacity-10 transition-opacity duration-300 pointer-events-none`}
-      />
     </AnimatedCard>
   );
 }
diff --git a/apps/portal/src/features/catalog/components/internet/InstallationOptions.tsx b/apps/portal/src/features/catalog/components/internet/InstallationOptions.tsx
index 03db2be1..58c02458 100644
--- a/apps/portal/src/features/catalog/components/internet/InstallationOptions.tsx
+++ b/apps/portal/src/features/catalog/components/internet/InstallationOptions.tsx
@@ -1,7 +1,7 @@
 "use client";
 
 import type { InternetInstallationCatalogItem } from "@customer-portal/domain/catalog";
-import { getDisplayPrice } from "../../utils/pricing";
+import { CardPricing } from "@/features/catalog/components/base/CardPricing";
 
 type InstallationTerm = NonNullable<
   NonNullable<InternetInstallationCatalogItem["catalogMetadata"]>["installationTerm"]
@@ -14,24 +14,6 @@ interface InstallationOptionsProps {
   showSkus?: boolean;
 }
 
-function getPriceLabel(installation: InternetInstallationCatalogItem): string {
-  const priceInfo = getDisplayPrice(installation);
-  if (!priceInfo) {
-    return "Price not available";
-  }
-  const billingCycle = installation.billingCycle?.toLowerCase();
-  if (billingCycle === "monthly" && priceInfo.monthly !== null) {
-    return `¥${priceInfo.monthly.toLocaleString()}/month`;
-  }
-  if (priceInfo.oneTime !== null) {
-    return `¥${priceInfo.oneTime.toLocaleString()} one-time`;
-  }
-  if (priceInfo.monthly !== null) {
-    return `¥${priceInfo.monthly.toLocaleString()}`;
-  }
-  return priceInfo.display || "Price not available";
-}
-
 export function InstallationOptions({
   installations,
   selectedInstallationSku,
@@ -51,18 +33,17 @@ export function InstallationOptions({
   }
 
   return (
-    <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
+    <div className="grid grid-cols-1 md:grid-cols-3 gap-6">
       {sortedInstallations.map(installation => {
         const isSelected = selectedInstallationSku === installation.sku;
-        const priceInfo = getDisplayPrice(installation);
         const installationTerm = installation.catalogMetadata?.installationTerm ?? null;
         const description =
           installation.description ||
           (installationTerm === "12-Month"
-            ? "Spread the installation fee across 12 payments."
+            ? "Spread the installation fee across 12 monthly payments."
             : installationTerm === "24-Month"
-              ? "Spread the installation fee across 24 payments."
-              : "Pay the full installation fee once.");
+              ? "Spread the installation fee across 24 monthly payments."
+              : "Pay the full installation fee in one payment.");
 
         return (
           <button
@@ -70,46 +51,52 @@ export function InstallationOptions({
             type="button"
             onClick={() => onInstallationSelect(installation)}
             aria-pressed={isSelected}
-            className={`p-6 rounded-xl border-2 text-left transition-all duration-200 focus:outline-none focus-visible:ring-2 focus-visible:ring-blue-500 focus-visible:ring-offset-2 ${
+            className={`p-6 rounded-xl border-2 text-left transition-all duration-200 focus:outline-none focus-visible:ring-2 focus-visible:ring-blue-500 focus-visible:ring-offset-2 flex flex-col gap-4 ${
               isSelected
-                ? "border-blue-500 bg-blue-50"
-                : "border-gray-200 hover:border-blue-400 hover:bg-blue-50"
+                ? "border-blue-500 bg-blue-50 shadow-md"
+                : "border-gray-200 hover:border-blue-400 hover:bg-blue-50/50 shadow-sm hover:shadow-md"
             }`}
           >
-            <div className="flex items-center justify-between mb-3">
-              <h4 className="font-semibold text-gray-900">{installation.name}</h4>
+            {/* Header with title and radio button */}
+            <div className="flex items-start justify-between gap-3">
+              <h4 className="text-lg font-semibold text-gray-900 flex-1">{installation.name}</h4>
               <div
-                className={`w-4 h-4 aspect-square rounded-full border-2 flex items-center justify-center ${
-                  isSelected ? "bg-blue-500 border-blue-500" : "border-gray-300"
+                className={`w-5 h-5 rounded-full border-2 flex items-center justify-center flex-shrink-0 mt-0.5 ${
+                  isSelected ? "bg-blue-500 border-blue-500" : "border-gray-300 bg-white"
                 }`}
+                aria-hidden="true"
               >
                 {isSelected && (
                   <div className="w-2 h-2 bg-white rounded-full"></div>
                 )}
               </div>
             </div>
-            <p className="text-sm text-gray-600 mb-3">{description}</p>
-            <div className="space-y-1">
-              <div className="flex items-center justify-between">
-                <span className="text-xs text-gray-500">
-                  {installation.billingCycle === "Monthly" ? "Monthly payment" : "One-time payment"}
-                </span>
-              </div>
-              <div className="flex justify-end">
-                {priceInfo ? (
-                  <span
-                    className={`text-lg font-bold ${
-                      installation.billingCycle === "Monthly" ? "text-blue-600" : "text-green-600"
-                    }`}
-                  >
-                    {getPriceLabel(installation)}
-                  </span>
-                ) : (
-                  <span className="text-sm text-gray-400">Price not available</span>
-                )}
-              </div>
+
+            {/* Description */}
+            <p className="text-sm text-gray-600 leading-relaxed">{description}</p>
+
+            {/* Payment type badge */}
+            <div className="flex items-center gap-2">
+              <span className={`text-xs px-2.5 py-1 rounded-full font-medium ${
+                installation.billingCycle === "Monthly" 
+                  ? "bg-blue-100 text-blue-700 border border-blue-200" 
+                  : "bg-green-100 text-green-700 border border-green-200"
+              }`}>
+                {installation.billingCycle === "Monthly" ? "Monthly Payment" : "One-time Payment"}
+              </span>
             </div>
-            {showSkus && <div className="text-xs text-gray-400 mt-2">SKU: {installation.sku}</div>}
+
+            {/* Pricing */}
+            <div className="pt-3 border-t border-gray-200">
+              <CardPricing
+                monthlyPrice={installation.billingCycle === "Monthly" ? installation.monthlyPrice : null}
+                oneTimePrice={installation.billingCycle !== "Monthly" ? installation.oneTimePrice : null}
+                size="md"
+                alignment="left"
+              />
+            </div>
+
+            {showSkus && <div className="text-xs text-gray-400 pt-2 border-t border-gray-100">SKU: {installation.sku}</div>}
           </button>
         );
       })}
diff --git a/apps/portal/src/features/catalog/components/internet/InternetConfigureView.tsx b/apps/portal/src/features/catalog/components/internet/InternetConfigureView.tsx
index 9d0fdb8b..c233e21d 100644
--- a/apps/portal/src/features/catalog/components/internet/InternetConfigureView.tsx
+++ b/apps/portal/src/features/catalog/components/internet/InternetConfigureView.tsx
@@ -6,23 +6,28 @@ import type {
   InternetInstallationCatalogItem,
   InternetAddonCatalogItem,
 } from "@customer-portal/domain/catalog";
+import type { UseInternetConfigureResult } from "@/features/catalog/hooks/useInternetConfigure";
 
-interface Props {
-  plan: InternetPlanCatalogItem | null;
-  loading: boolean;
-  addons: InternetAddonCatalogItem[];
-  installations: InternetInstallationCatalogItem[];
+interface Props extends UseInternetConfigureResult {
   onConfirm: () => void;
 }
 
-export function InternetConfigureView({ plan, loading, addons, installations, onConfirm }: Props) {
+export function InternetConfigureView(props: Props) {
   return (
     <InternetConfigureContainer
-      plan={plan}
-      loading={loading}
-      addons={addons}
-      installations={installations}
-      onConfirm={onConfirm}
+      plan={props.plan}
+      loading={props.loading}
+      addons={props.addons}
+      installations={props.installations}
+      onConfirm={props.onConfirm}
+      mode={props.mode}
+      setMode={props.setMode}
+      selectedInstallation={props.selectedInstallation}
+      setSelectedInstallationSku={props.setSelectedInstallationSku}
+      selectedAddonSkus={props.selectedAddonSkus}
+      setSelectedAddonSkus={props.setSelectedAddonSkus}
+      monthlyTotal={props.monthlyTotal}
+      oneTimeTotal={props.oneTimeTotal}
     />
   );
 }
diff --git a/apps/portal/src/features/catalog/components/internet/InternetPlanCard.tsx b/apps/portal/src/features/catalog/components/internet/InternetPlanCard.tsx
index 42a93922..414e4cb4 100644
--- a/apps/portal/src/features/catalog/components/internet/InternetPlanCard.tsx
+++ b/apps/portal/src/features/catalog/components/internet/InternetPlanCard.tsx
@@ -8,6 +8,9 @@ import type {
   InternetInstallationCatalogItem,
 } from "@customer-portal/domain/catalog";
 import { useRouter } from "next/navigation";
+import { CardPricing } from "@/features/catalog/components/base/CardPricing";
+import { CardBadge } from "@/features/catalog/components/base/CardBadge";
+import type { BadgeVariant } from "@/features/catalog/components/base/CardBadge";
 
 interface InternetPlanCardProps {
   plan: InternetPlanCatalogItem;
@@ -54,91 +57,92 @@ export function InternetPlanCard({
     return "border border-gray-200 bg-white shadow hover:shadow-lg";
   };
 
+  const getTierBadgeVariant = (): BadgeVariant => {
+    if (isGold) return "gold";
+    if (isPlatinum) return "platinum";
+    if (isSilver) return "silver";
+    return "default";
+  };
+
   return (
     <AnimatedCard
       variant="static"
       className={`overflow-hidden flex flex-col h-full transition-all duration-300 ease-out hover:-translate-y-1 ${getBorderClass()}`}
     >
-      <div className="p-6 flex flex-col flex-grow space-y-5">
+      <div className="p-6 flex flex-col flex-grow space-y-4">
+        {/* Header with badges and pricing */}
         <div className="flex items-start justify-between gap-4">
-          <div className="flex flex-col gap-2">
-            <div className="flex items-center gap-2">
-              <span
-                className={`px-2.5 py-1 rounded-full text-xs font-medium border ${
-                  isGold
-                    ? "bg-yellow-50 text-yellow-700 border-yellow-200"
-                    : isPlatinum
-                      ? "bg-indigo-50 text-indigo-700 border-indigo-200"
-                      : "bg-gray-50 text-gray-700 border-gray-200"
-                }`}
-              >
-                {tier || "Plan"}
-              </span>
+          <div className="flex flex-col gap-2 flex-1 min-w-0">
+            <div className="flex items-center gap-2 flex-wrap">
+              <CardBadge text={tier || "Plan"} variant={getTierBadgeVariant()} />
               {isGold && (
-                <span className="px-2 py-0.5 text-xs font-medium text-green-700 bg-green-50 border border-green-200 rounded-full">
-                  Recommended
-                </span>
+                <CardBadge text="Recommended" variant="recommended" size="sm" />
               )}
             </div>
-            <h3 className="text-lg font-semibold text-gray-900 leading-snug max-w-xs">{plan.name}</h3>
+            <h3 className="text-xl font-semibold text-gray-900 leading-tight">{plan.name}</h3>
           </div>
 
-          {plan.monthlyPrice && plan.monthlyPrice > 0 && (
-            <div className="text-right shrink-0">
-              <div className="text-xs uppercase tracking-wide text-gray-500 mb-1">Monthly</div>
-              <div className="text-2xl font-bold text-gray-900 leading-none">
-                ¥{plan.monthlyPrice.toLocaleString()}
-              </div>
-              {plan.oneTimePrice && plan.oneTimePrice > 0 && (
-                <div className="text-xs text-gray-500 mt-1">One-time ¥{plan.oneTimePrice.toLocaleString()}</div>
-              )}
-            </div>
-          )}
+          <div className="flex-shrink-0">
+            <CardPricing 
+              monthlyPrice={plan.monthlyPrice} 
+              oneTimePrice={plan.oneTimePrice}
+              size="md"
+              alignment="right"
+            />
+          </div>
         </div>
 
-        <p className="text-gray-600 text-sm leading-relaxed">
+        {/* Description */}
+        <p className="text-sm text-gray-600 leading-relaxed">
           {plan.catalogMetadata?.tierDescription || plan.description}
         </p>
 
+        {/* Features */}
         <div className="flex-grow">
-          <h4 className="font-medium text-gray-900 mb-3">Your Plan Includes</h4>
+          <h4 className="font-medium text-gray-900 mb-3 text-sm">Plan Includes:</h4>
           <ul className="space-y-2 text-sm text-gray-700">
             {plan.catalogMetadata?.features && plan.catalogMetadata.features.length > 0 ? (
               plan.catalogMetadata.features.map((feature, index) => (
-                <li key={index} className="flex items-start">
-                  <span className="text-green-600 mr-2">✓</span>
-                  {feature}
+                <li key={index} className="flex items-start gap-2">
+                  <span className="text-green-600 mt-0.5 flex-shrink-0">✓</span>
+                  <span>{feature}</span>
                 </li>
               ))
             ) : (
               <>
-                <li className="flex items-start">
-                  <span className="text-green-600 mr-2">✓</span>1 NTT Optical Fiber (Flet&apos;s
-                  Hikari Next -{" "}
-                  {plan.internetOfferingType?.includes("Apartment") ? "Mansion" : "Home"}{" "}
-                  {plan.internetOfferingType?.includes("10G")
-                    ? "10Gbps"
-                    : plan.internetOfferingType?.includes("100M")
-                      ? "100Mbps"
-                      : "1Gbps"}
-                  ) Installation + Monthly
+                <li className="flex items-start gap-2">
+                  <span className="text-green-600 mt-0.5 flex-shrink-0">✓</span>
+                  <span>NTT Optical Fiber (Flet&apos;s Hikari Next)</span>
                 </li>
-                <li className="flex items-start">
-                  <span className="text-green-600 mr-2">✓</span>
-                  Monthly: ¥{(plan.monthlyPrice ?? 0).toLocaleString()}
-                  {installations.length > 0 && minInstallationPrice > 0 && (
-                    <span className="text-gray-600 text-sm ml-2">
-                      (+ installation from ¥{minInstallationPrice.toLocaleString()})
-                    </span>
-                  )}
+                <li className="flex items-start gap-2">
+                  <span className="text-green-600 mt-0.5 flex-shrink-0">✓</span>
+                  <span>
+                    {plan.internetOfferingType?.includes("Apartment") ? "Mansion" : "Home"}{" "}
+                    {plan.internetOfferingType?.includes("10G")
+                      ? "10Gbps"
+                      : plan.internetOfferingType?.includes("100M")
+                        ? "100Mbps"
+                        : "1Gbps"} connection
+                  </span>
                 </li>
+                <li className="flex items-start gap-2">
+                  <span className="text-green-600 mt-0.5 flex-shrink-0">✓</span>
+                  <span>ISP connection protocols: IPoE and PPPoE</span>
+                </li>
+                {installations.length > 0 && minInstallationPrice > 0 && (
+                  <li className="flex items-start gap-2">
+                    <span className="text-green-600 mt-0.5 flex-shrink-0">✓</span>
+                    <span>Installation from ¥{minInstallationPrice.toLocaleString()}</span>
+                  </li>
+                )}
               </>
             )}
           </ul>
         </div>
 
+        {/* Action Button */}
         <Button
-          className="w-full group"
+          className="w-full"
           disabled={isDisabled}
           rightIcon={!isDisabled ? <ArrowRightIcon className="w-4 h-4" /> : undefined}
           onClick={() => {
diff --git a/apps/portal/src/features/catalog/components/internet/configure/InternetConfigureContainer.tsx b/apps/portal/src/features/catalog/components/internet/configure/InternetConfigureContainer.tsx
index 21bb46dc..843a1d07 100644
--- a/apps/portal/src/features/catalog/components/internet/configure/InternetConfigureContainer.tsx
+++ b/apps/portal/src/features/catalog/components/internet/configure/InternetConfigureContainer.tsx
@@ -9,6 +9,7 @@ import type {
   InternetInstallationCatalogItem,
   InternetAddonCatalogItem,
 } from "@customer-portal/domain/catalog";
+import type { AccessMode } from "../../../hooks/useConfigureParams";
 import { ConfigureLoadingSkeleton } from "./components/ConfigureLoadingSkeleton";
 import { ServiceConfigurationStep } from "./steps/ServiceConfigurationStep";
 import { InstallationStep } from "./steps/InstallationStep";
@@ -22,6 +23,15 @@ interface Props {
   addons: InternetAddonCatalogItem[];
   installations: InternetInstallationCatalogItem[];
   onConfirm: () => void;
+  // State from parent hook
+  mode: AccessMode | null;
+  setMode: (mode: AccessMode) => void;
+  selectedInstallation: InternetInstallationCatalogItem | null;
+  setSelectedInstallationSku: (sku: string | null) => void;
+  selectedAddonSkus: string[];
+  setSelectedAddonSkus: (skus: string[]) => void;
+  monthlyTotal: number;
+  oneTimeTotal: number;
 }
 
 const STEPS = [
@@ -37,21 +47,22 @@ export function InternetConfigureContainer({
   addons,
   installations,
   onConfirm,
+  mode,
+  setMode,
+  selectedInstallation,
+  setSelectedInstallationSku,
+  selectedAddonSkus,
+  setSelectedAddonSkus,
+  monthlyTotal,
+  oneTimeTotal,
 }: Props) {
+  // Use local state ONLY for step navigation, not for configuration data
   const {
     currentStep,
     isTransitioning,
-    mode,
-    selectedInstallation,
-    selectedAddonSkus,
-    monthlyTotal,
-    oneTimeTotal,
-    setMode,
-    setSelectedInstallationSku,
-    setSelectedAddonSkus,
     transitionToStep,
     canProceedFromStep,
-  } = useConfigureState(plan, installations, addons);
+  } = useConfigureState(plan, installations, addons, mode, selectedInstallation);
 
   const handleAddonSelection = (newSelectedSkus: string[]) => setSelectedAddonSkus(newSelectedSkus);
 
diff --git a/apps/portal/src/features/catalog/components/internet/configure/hooks/useConfigureState.ts b/apps/portal/src/features/catalog/components/internet/configure/hooks/useConfigureState.ts
index 77d57d92..ed48d552 100644
--- a/apps/portal/src/features/catalog/components/internet/configure/hooks/useConfigureState.ts
+++ b/apps/portal/src/features/catalog/components/internet/configure/hooks/useConfigureState.ts
@@ -1,171 +1,112 @@
 "use client";
 
-import { useState, useCallback } from "react";
+import { useState, useCallback, useEffect } from "react";
+import { useRouter } from "next/navigation";
 import type {
   InternetPlanCatalogItem,
   InternetInstallationCatalogItem,
   InternetAddonCatalogItem,
 } from "@customer-portal/domain/catalog";
 import type { AccessMode } from "../../../../hooks/useConfigureParams";
-type InstallationTerm = NonNullable<
-  NonNullable<InternetInstallationCatalogItem["catalogMetadata"]>["installationTerm"]
->;
-
-interface ConfigureState {
-  currentStep: number;
-  isTransitioning: boolean;
-  mode: AccessMode | null;
-  selectedInstallation: InternetInstallationCatalogItem | null;
-  selectedInstallationType: InstallationTerm | null;
-  selectedAddonSkus: string[];
-}
-
-interface ConfigureTotals {
-  monthlyTotal: number;
-  oneTimeTotal: number;
-}
 
+/**
+ * Hook for managing configuration wizard UI state (step navigation and transitions)
+ * Follows domain/BFF architecture: pure UI state management, no business logic
+ * 
+ * Uses internal state for step navigation - no URL manipulation needed.
+ * Steps are determined by:
+ * 1. Router state (when navigating back from checkout)
+ * 2. Presence of configuration data (auto-advance to review if complete)
+ * 3. Default to step 1 for new configurations
+ * 
+ * @param plan - Selected internet plan
+ * @param installations - Available installation options
+ * @param addons - Available addon options  
+ * @param mode - Currently selected access mode
+ * @param selectedInstallation - Currently selected installation
+ * @returns Step navigation state and helpers
+ */
 export function useConfigureState(
   plan: InternetPlanCatalogItem | null,
   installations: InternetInstallationCatalogItem[],
-  addons: InternetAddonCatalogItem[]
+  addons: InternetAddonCatalogItem[],
+  mode: AccessMode | null,
+  selectedInstallation: InternetInstallationCatalogItem | null
 ) {
-  const [state, setState] = useState<ConfigureState>({
-    currentStep: 1,
-    isTransitioning: false,
-    mode: null,
-    selectedInstallation: null,
-    selectedInstallationType: null,
-    selectedAddonSkus: [],
-  });
+  // Check if we should return to a specific step (from checkout navigation)
+  const getInitialStep = (): number => {
+    // Check for router state (passed when navigating back from checkout)
+    if (typeof window !== "undefined") {
+      const state = (window.history.state as any)?.state;
+      if (state?.returnToStep) {
+        return state.returnToStep;
+      }
+    }
+    
+    // If returning with full config, go to review step
+    if (mode && selectedInstallation) {
+      return 4;
+    }
+    
+    // Default to step 1 for new configurations
+    return 1;
+  };
+  
+  const [currentStep, setCurrentStep] = useState<number>(getInitialStep);
+  const [isTransitioning, setIsTransitioning] = useState(false);
+  
+  // Only update step when configuration data changes, not on every render
+  useEffect(() => {
+    // Auto-advance to review if all required config is present and we're on an earlier step
+    if (mode && selectedInstallation && currentStep < 4) {
+      const shouldAutoAdvance = getInitialStep();
+      if (shouldAutoAdvance === 4 && currentStep !== 4) {
+        setCurrentStep(4);
+      }
+    }
+  }, [mode, selectedInstallation]);
 
-  // Step navigation
+  // Step navigation with transition effect
   const transitionToStep = useCallback((nextStep: number) => {
-    setState(prev => ({ ...prev, isTransitioning: true }));
+    setIsTransitioning(true);
     setTimeout(() => {
-      setState(prev => ({ ...prev, currentStep: nextStep, isTransitioning: false }));
+      setCurrentStep(nextStep);
+      setTimeout(() => setIsTransitioning(false), 50);
     }, 150);
   }, []);
 
-  // Mode selection
-  const setMode = useCallback((mode: AccessMode) => {
-    setState(prev => ({ ...prev, mode }));
-  }, []);
-
-  // Installation selection
-  const setSelectedInstallationSku = useCallback(
-    (sku: string | null) => {
-      const installation = sku ? installations.find(inst => inst.sku === sku) || null : null;
-      const installationType = installation?.catalogMetadata?.installationTerm ?? null;
-
-      setState(prev => ({
-        ...prev,
-        selectedInstallation: installation,
-        selectedInstallationType: installationType,
-      }));
-    },
-    [installations]
-  );
-
-  // Addon selection
-  const setSelectedAddonSkus = useCallback((skus: string[]) => {
-    setState(prev => ({ ...prev, selectedAddonSkus: skus }));
-  }, []);
-
-  // Calculate totals
-  const totals: ConfigureTotals = {
-    monthlyTotal: calculateMonthlyTotal(
-      plan,
-      state.selectedInstallation,
-      state.selectedAddonSkus,
-      addons
-    ),
-    oneTimeTotal: calculateOneTimeTotal(
-      plan,
-      state.selectedInstallation,
-      state.selectedAddonSkus,
-      addons
-    ),
-  };
-
-  // Validation
+  // UI validation - determines if user can proceed from current step
+  // Note: Real validation should happen on BFF during order submission
   const canProceedFromStep = useCallback(
     (step: number): boolean => {
       switch (step) {
         case 1:
-          return plan?.internetPlanTier !== "Silver" || state.mode !== null;
+          // Silver plans require explicit mode selection
+          // Gold/Platinum have default mode
+          if (plan?.internetPlanTier === "Silver") {
+            return mode !== null;
+          }
+          return true;
         case 2:
-          return state.selectedInstallation !== null;
+          // Installation selection is required
+          return selectedInstallation !== null;
         case 3:
-          return true; // Add-ons are optional
+          // Add-ons are optional
+          return true;
         case 4:
-          return true; // Review step
+          // Review step - always can proceed
+          return true;
         default:
           return false;
       }
     },
-    [plan, state.mode, state.selectedInstallation]
+    [plan, mode, selectedInstallation]
   );
 
   return {
-    ...state,
-    ...totals,
-    setMode,
-    setSelectedInstallationSku,
-    setSelectedAddonSkus,
+    currentStep,
+    isTransitioning,
     transitionToStep,
     canProceedFromStep,
   };
 }
-
-function calculateMonthlyTotal(
-  plan: InternetPlanCatalogItem | null,
-  selectedInstallation: InternetInstallationCatalogItem | null,
-  selectedAddonSkus: string[],
-  addons: InternetAddonCatalogItem[]
-): number {
-  let total = 0;
-
-  if (typeof plan?.monthlyPrice === "number") {
-    total += plan.monthlyPrice;
-  }
-
-  if (typeof selectedInstallation?.monthlyPrice === "number") {
-    total += selectedInstallation.monthlyPrice;
-  }
-
-  selectedAddonSkus.forEach(sku => {
-    const addon = addons.find(a => a.sku === sku);
-    if (typeof addon?.monthlyPrice === "number") {
-      total += addon.monthlyPrice;
-    }
-  });
-
-  return total;
-}
-
-function calculateOneTimeTotal(
-  plan: InternetPlanCatalogItem | null,
-  selectedInstallation: InternetInstallationCatalogItem | null,
-  selectedAddonSkus: string[],
-  addons: InternetAddonCatalogItem[]
-): number {
-  let total = 0;
-
-  if (typeof plan?.oneTimePrice === "number") {
-    total += plan.oneTimePrice;
-  }
-
-  if (typeof selectedInstallation?.oneTimePrice === "number") {
-    total += selectedInstallation.oneTimePrice;
-  }
-
-  selectedAddonSkus.forEach(sku => {
-    const addon = addons.find(a => a.sku === sku);
-    if (typeof addon?.oneTimePrice === "number") {
-      total += addon.oneTimePrice;
-    }
-  });
-
-  return total;
-}
diff --git a/apps/portal/src/features/catalog/components/internet/configure/steps/ReviewOrderStep.tsx b/apps/portal/src/features/catalog/components/internet/configure/steps/ReviewOrderStep.tsx
index 8297b0a1..4468c834 100644
--- a/apps/portal/src/features/catalog/components/internet/configure/steps/ReviewOrderStep.tsx
+++ b/apps/portal/src/features/catalog/components/internet/configure/steps/ReviewOrderStep.tsx
@@ -64,21 +64,17 @@ export function ReviewOrderStep({
         />
       </div>
 
-      <div className="flex justify-between items-center pt-6 border-t">
+      <div className="flex justify-between pt-6 border-t">
         <Button
           onClick={onBack}
           variant="outline"
-          size="lg"
-          className="px-8 py-4 text-lg"
-          leftIcon={<ArrowLeftIcon className="w-5 h-5" />}
+          leftIcon={<ArrowLeftIcon className="w-4 h-4" />}
         >
           Back to Add-ons
         </Button>
         <Button
           onClick={onConfirm}
-          size="lg"
-          className="px-12 py-4 text-lg font-semibold"
-          rightIcon={<ArrowRightIcon className="w-5 h-5" />}
+          rightIcon={<ArrowRightIcon className="w-4 h-4" />}
         >
           Proceed to Checkout
         </Button>
diff --git a/apps/portal/src/features/catalog/components/sim/SimPlanCard.tsx b/apps/portal/src/features/catalog/components/sim/SimPlanCard.tsx
index a576373c..706aa7cb 100644
--- a/apps/portal/src/features/catalog/components/sim/SimPlanCard.tsx
+++ b/apps/portal/src/features/catalog/components/sim/SimPlanCard.tsx
@@ -1,46 +1,59 @@
 "use client";
 
-import { DevicePhoneMobileIcon, UsersIcon, CurrencyYenIcon } from "@heroicons/react/24/outline";
+import { DevicePhoneMobileIcon } from "@heroicons/react/24/outline";
 import { AnimatedCard } from "@/components/molecules/AnimatedCard/AnimatedCard";
 import { Button } from "@/components/atoms/button";
+import { ArrowRightIcon } from "@heroicons/react/24/outline";
 import type { SimCatalogProduct } from "@customer-portal/domain/catalog";
+import { CardPricing } from "@/features/catalog/components/base/CardPricing";
+import { CardBadge } from "@/features/catalog/components/base/CardBadge";
 
 export function SimPlanCard({ plan, isFamily }: { plan: SimCatalogProduct; isFamily?: boolean }) {
   const displayPrice = plan.monthlyPrice ?? plan.unitPrice ?? plan.oneTimePrice ?? 0;
   const isFamilyPlan = isFamily ?? Boolean(plan.simHasFamilyDiscount);
 
   return (
-    <AnimatedCard variant={isFamilyPlan ? "success" : "default"} className="p-6 w-full max-w-sm">
-      <div className="flex items-start justify-between mb-3">
-        <div>
-          <div className="flex items-center gap-2 mb-1">
-            <DevicePhoneMobileIcon className="h-4 w-4 text-blue-600" />
-            <span className="font-bold text-sm text-gray-900">{plan.simDataSize}</span>
+    <AnimatedCard 
+      variant={isFamilyPlan ? "success" : "default"} 
+      className="p-6 w-full max-w-sm flex flex-col h-full"
+    >
+      {/* Header with data size and pricing */}
+      <div className="flex items-start justify-between gap-4 mb-3">
+        <div className="flex flex-col gap-2">
+          <div className="flex items-center gap-2">
+            <DevicePhoneMobileIcon className="h-5 w-5 text-blue-600" />
+            <span className="font-bold text-base text-gray-900">{plan.simDataSize}</span>
           </div>
           {isFamilyPlan && (
-            <div className="flex items-center gap-1 mb-1">
-              <UsersIcon className="h-4 w-4 text-green-600" />
-              <span className="bg-green-100 text-green-800 text-xs px-2 py-1 rounded-full font-medium">
-                Family
-              </span>
-            </div>
+            <CardBadge text="Family Discount" variant="family" size="sm" />
           )}
         </div>
       </div>
-      <div className="mb-3">
-        <div className="flex items-baseline gap-1">
-          <CurrencyYenIcon className="h-4 w-4 text-gray-600" />
-          <span className="text-xl font-bold text-gray-900">{displayPrice.toLocaleString()}</span>
-          <span className="text-gray-600 text-sm">/month</span>
-        </div>
+
+      {/* Pricing */}
+      <div className="mb-4">
+        <CardPricing 
+          monthlyPrice={displayPrice} 
+          size="sm"
+          alignment="left"
+        />
         {isFamilyPlan && (
-          <div className="text-xs text-green-600 font-medium mt-1">Discounted price</div>
+          <div className="text-xs text-green-600 font-medium mt-1">Discounted pricing applied</div>
         )}
       </div>
-      <div className="mb-4">
-        <p className="text-xs text-gray-600 line-clamp-2">{plan.name}</p>
+
+      {/* Description */}
+      <div className="mb-4 flex-grow">
+        <p className="text-sm text-gray-600 leading-relaxed line-clamp-2">{plan.name}</p>
       </div>
-      <Button as="a" href={`/catalog/sim/configure?plan=${plan.sku}`} className="w-full" size="sm">
+
+      {/* Action Button */}
+      <Button 
+        as="a" 
+        href={`/catalog/sim/configure?plan=${plan.sku}`} 
+        className="w-full"
+        rightIcon={<ArrowRightIcon className="w-4 h-4" />}
+      >
         Configure
       </Button>
     </AnimatedCard>
diff --git a/apps/portal/src/features/catalog/components/vpn/VpnPlanCard.tsx b/apps/portal/src/features/catalog/components/vpn/VpnPlanCard.tsx
index 2fb0da47..5bd69be9 100644
--- a/apps/portal/src/features/catalog/components/vpn/VpnPlanCard.tsx
+++ b/apps/portal/src/features/catalog/components/vpn/VpnPlanCard.tsx
@@ -2,8 +2,9 @@
 
 import { AnimatedCard } from "@/components/molecules";
 import { Button } from "@/components/atoms/button";
-import { CurrencyYenIcon } from "@heroicons/react/24/outline";
+import { ArrowRightIcon, ShieldCheckIcon } from "@heroicons/react/24/outline";
 import type { VpnCatalogProduct } from "@customer-portal/domain/catalog";
+import { CardPricing } from "@/features/catalog/components/base/CardPricing";
 
 interface VpnPlanCardProps {
   plan: VpnCatalogProduct;
@@ -11,24 +12,40 @@ interface VpnPlanCardProps {
 
 export function VpnPlanCard({ plan }: VpnPlanCardProps) {
   return (
-    <AnimatedCard className="p-6 border-2 border-blue-200 hover:border-blue-300 transition-colors">
-      <div className="text-center mb-4">
-        <h3 className="text-xl font-bold text-gray-900">{plan.name}</h3>
-      </div>
-      <div className="mb-4 text-center">
-        <div className="flex items-baseline justify-center gap-1">
-          <CurrencyYenIcon className="h-5 w-5 text-gray-600" />
-          <span className="text-3xl font-bold text-gray-900">
-            {plan.monthlyPrice?.toLocaleString()}
-          </span>
-          <span className="text-gray-600">/month</span>
+    <AnimatedCard className="p-6 border border-blue-200 hover:border-blue-300 transition-all duration-300 hover:shadow-lg flex flex-col h-full">
+      {/* Header with icon and name */}
+      <div className="flex items-start gap-3 mb-4">
+        <div className="p-2 bg-blue-50 rounded-lg">
+          <ShieldCheckIcon className="h-6 w-6 text-blue-600" />
+        </div>
+        <div className="flex-1">
+          <h3 className="text-xl font-semibold text-gray-900">{plan.name}</h3>
         </div>
       </div>
-      <Button as="a" href={`/catalog/vpn/configure?plan=${plan.sku}`} className="w-full">
-        Configure Plan
-      </Button>
+
+      {/* Pricing */}
+      <div className="mb-6">
+        <CardPricing 
+          monthlyPrice={plan.monthlyPrice} 
+          size="lg"
+          alignment="left"
+        />
+      </div>
+
+      {/* Action Button */}
+      <div className="mt-auto">
+        <Button 
+          as="a" 
+          href={`/catalog/vpn/configure?plan=${plan.sku}`} 
+          className="w-full"
+          rightIcon={<ArrowRightIcon className="w-4 h-4" />}
+        >
+          Configure Plan
+        </Button>
+      </div>
     </AnimatedCard>
   );
 }
 
 export type { VpnPlanCardProps };
+
diff --git a/apps/portal/src/features/catalog/hooks/useConfigureParams.ts b/apps/portal/src/features/catalog/hooks/useConfigureParams.ts
index 37b79d84..a3fa647c 100644
--- a/apps/portal/src/features/catalog/hooks/useConfigureParams.ts
+++ b/apps/portal/src/features/catalog/hooks/useConfigureParams.ts
@@ -41,7 +41,16 @@ export function useInternetConfigureParams() {
   const accessMode: AccessMode | null =
     accessModeParam === "IPoE-BYOR" || accessModeParam === "PPPoE" ? accessModeParam : null;
   const installationSku = params.get("installationSku");
-  const addonSkus = params.getAll("addonSku");
+  
+  // Support both formats: comma-separated 'addons' or multiple 'addonSku' params
+  const addonsParam = params.get("addons");
+  const addonSkuParams = params.getAll("addonSku");
+  
+  const addonSkus = addonsParam 
+    ? addonsParam.split(",").map(s => s.trim()).filter(Boolean)
+    : addonSkuParams.length > 0 
+      ? addonSkuParams 
+      : [];
 
   return {
     accessMode,
diff --git a/apps/portal/src/features/catalog/hooks/useInternetConfigure.ts b/apps/portal/src/features/catalog/hooks/useInternetConfigure.ts
index 6aad88e2..55313e2e 100644
--- a/apps/portal/src/features/catalog/hooks/useInternetConfigure.ts
+++ b/apps/portal/src/features/catalog/hooks/useInternetConfigure.ts
@@ -29,40 +29,38 @@ export type UseInternetConfigureResult = {
   selectedAddonSkus: string[];
   setSelectedAddonSkus: (skus: string[]) => void;
 
-  currentStep: number;
-  isTransitioning: boolean;
-  transitionToStep: (nextStep: number) => void;
-
   monthlyTotal: number;
   oneTimeTotal: number;
 
   buildCheckoutSearchParams: () => URLSearchParams | null;
 };
 
+/**
+ * Hook for managing internet service configuration state
+ * Follows domain/BFF architecture: minimal client logic, state management only
+ */
 export function useInternetConfigure(): UseInternetConfigureResult {
   const router = useRouter();
   const searchParams = useSearchParams();
   const planSku = searchParams.get("plan");
 
+  // Fetch catalog data from BFF
   const { data: internetData, isLoading: internetLoading } = useInternetCatalog();
   const { plan: selectedPlan } = useInternetPlan(planSku || undefined);
   const { accessMode, installationSku, addonSkus } = useInternetConfigureParams();
 
+  // Local UI state
   const [plan, setPlan] = useState<InternetPlanCatalogItem | null>(null);
   const [loading, setLoading] = useState(true);
   const [addons, setAddons] = useState<InternetAddonCatalogItem[]>([]);
   const [installations, setInstallations] = useState<InternetInstallationCatalogItem[]>([]);
 
+  // Configuration selections
   const [mode, setMode] = useState<InternetAccessMode | null>(null);
   const [selectedInstallationSku, setSelectedInstallationSku] = useState<string | null>(null);
   const [selectedAddonSkus, setSelectedAddonSkus] = useState<string[]>([]);
 
-  const [currentStep, setCurrentStep] = useState<number>(() => {
-    const stepParam = searchParams.get("step");
-    return stepParam ? parseInt(stepParam, 10) : 1;
-  });
-  const [isTransitioning, setIsTransitioning] = useState(false);
-
+  // Initialize state from BFF data and URL params
   useEffect(() => {
     let mounted = true;
     if (!planSku) {
@@ -78,9 +76,24 @@ export function useInternetConfigure(): UseInternetConfigureResult {
           setAddons(addonsData);
           setInstallations(installationsData);
 
-          if (accessMode) setMode(accessMode as InternetAccessMode);
-          if (installationSku) setSelectedInstallationSku(installationSku);
-          if (addonSkus.length > 0) setSelectedAddonSkus(addonSkus);
+          // Always restore state from URL if present (important for back navigation)
+          if (accessMode) {
+            setMode(accessMode as InternetAccessMode);
+          } else if (selectedPlan.internetPlanTier === "Gold" || selectedPlan.internetPlanTier === "Platinum") {
+            // Auto-set default mode for Gold/Platinum plans (IPoE-BYOR is standard for these tiers)
+            setMode("IPoE-BYOR");
+          }
+          
+          // Restore installation and addons from URL params
+          if (installationSku) {
+            setSelectedInstallationSku(installationSku);
+          }
+          if (addonSkus.length > 0) {
+            setSelectedAddonSkus(addonSkus);
+          } else {
+            // Clear addons if none in URL (user might have removed them)
+            setSelectedAddonSkus([]);
+          }
         } else {
           router.push("/catalog/internet");
         }
@@ -98,17 +111,10 @@ export function useInternetConfigure(): UseInternetConfigureResult {
     selectedPlan,
     accessMode,
     installationSku,
-    addonSkus,
+    JSON.stringify(addonSkus), // Use JSON.stringify for array comparison
   ]);
 
-  const transitionToStep = (nextStep: number) => {
-    setIsTransitioning(true);
-    setTimeout(() => {
-      setCurrentStep(nextStep);
-      setTimeout(() => setIsTransitioning(false), 50);
-    }, 200);
-  };
-
+  // Derive selected installation from SKU
   const selectedInstallation = useMemo(() => {
     if (!selectedInstallationSku) return null;
     return installations.find(installation => installation.sku === selectedInstallationSku) || null;
@@ -119,6 +125,7 @@ export function useInternetConfigure(): UseInternetConfigureResult {
     return selectedInstallation.catalogMetadata?.installationTerm ?? null;
   }, [selectedInstallation]);
 
+  // Calculate totals (simple summation - real pricing logic should be in BFF)
   const { monthlyTotal, oneTimeTotal } = useMemo(() => {
     const baseMonthly = plan?.monthlyPrice ?? 0;
     const baseOneTime = plan?.oneTimePrice ?? 0;
@@ -154,12 +161,15 @@ export function useInternetConfigure(): UseInternetConfigureResult {
     } as const;
   }, [plan, selectedAddonSkus, addons, selectedInstallation]);
 
+  // Build checkout URL params (simple data marshalling, not business logic)
   const buildCheckoutSearchParams = () => {
     if (!plan || !mode || !selectedInstallationSku) return null;
     const params = new URLSearchParams({ type: "internet", plan: plan.sku, accessMode: mode });
     params.append("installationSku", selectedInstallationSku);
-    if (selectedAddonSkus.length > 0)
-      selectedAddonSkus.forEach(sku => params.append("addonSku", sku));
+    if (selectedAddonSkus.length > 0) {
+      // Send addons as comma-separated string to match BFF expectations
+      params.append("addons", selectedAddonSkus.join(","));
+    }
     return params;
   };
 
@@ -175,9 +185,6 @@ export function useInternetConfigure(): UseInternetConfigureResult {
     selectedInstallationType,
     selectedAddonSkus,
     setSelectedAddonSkus,
-    currentStep,
-    isTransitioning,
-    transitionToStep,
     monthlyTotal,
     oneTimeTotal,
     buildCheckoutSearchParams,
diff --git a/apps/portal/src/features/catalog/views/CatalogHome.tsx b/apps/portal/src/features/catalog/views/CatalogHome.tsx
index 7bf22091..84f5a589 100644
--- a/apps/portal/src/features/catalog/views/CatalogHome.tsx
+++ b/apps/portal/src/features/catalog/views/CatalogHome.tsx
@@ -15,10 +15,10 @@ import { FeatureCard } from "@/features/catalog/components/common/FeatureCard";
 
 export function CatalogHomeView() {
   return (
-    <div className="min-h-screen bg-gradient-to-br from-slate-50 via-blue-50 to-indigo-50">
+    <div className="min-h-screen bg-slate-50">
       <PageLayout icon={<></>} title="" description="">
         <div className="max-w-6xl mx-auto">
-          <div className="text-center mb-16">
+          <div className="text-center mb-12">
             <div className="inline-flex items-center gap-2 bg-blue-50 text-blue-700 px-4 py-2 rounded-full text-sm font-medium mb-6">
               <Squares2X2Icon className="h-4 w-4" />
               Services Catalog
@@ -26,20 +26,20 @@ export function CatalogHomeView() {
             <h1 className="text-5xl font-bold text-gray-900 mb-6 leading-tight">
               Choose Your Perfect
               <br />
-              <span className="bg-gradient-to-r from-blue-600 to-purple-600 bg-clip-text text-transparent">
+              <span className="text-blue-600">
                 Connectivity Solution
               </span>
             </h1>
-            <p className="text-xl text-gray-600 max-w-4xl mx-auto leading-relaxed">
+            <p className="text-lg text-gray-600 max-w-3xl mx-auto leading-relaxed">
               Discover high-speed internet, mobile data/voice options, and secure VPN services.
             </p>
           </div>
 
-          <div className="grid grid-cols-1 lg:grid-cols-3 gap-8 mb-16">
+          <div className="grid grid-cols-1 lg:grid-cols-3 gap-8 mb-12">
             <ServiceHeroCard
               title="Internet Service"
               description="Ultra-high-speed fiber internet with speeds up to 10Gbps."
-              icon={<ServerIcon className="h-12 w-12" />}
+              icon={<ServerIcon className="h-10 w-10" />}
               features={[
                 "Up to 10Gbps speeds",
                 "Fiber optic technology",
@@ -52,7 +52,7 @@ export function CatalogHomeView() {
             <ServiceHeroCard
               title="SIM & eSIM"
               description="Data, SMS, and voice plans with both physical SIM and eSIM options."
-              icon={<DevicePhoneMobileIcon className="h-12 w-12" />}
+              icon={<DevicePhoneMobileIcon className="h-10 w-10" />}
               features={[
                 "Physical SIM & eSIM",
                 "Data + SMS + Voice plans",
@@ -65,7 +65,7 @@ export function CatalogHomeView() {
             <ServiceHeroCard
               title="VPN Service"
               description="Secure remote access solutions for business and personal use."
-              icon={<ShieldCheckIcon className="h-12 w-12" />}
+              icon={<ShieldCheckIcon className="h-10 w-10" />}
               features={[
                 "Secure encryption",
                 "Multiple locations",
@@ -77,21 +77,21 @@ export function CatalogHomeView() {
             />
           </div>
 
-          <div className="bg-gradient-to-br from-gray-50 to-blue-50 rounded-3xl p-10 border border-gray-100">
-            <div className="text-center mb-10">
-              <h2 className="text-3xl font-bold text-gray-900 mb-4">Why Choose Our Services?</h2>
-              <p className="text-lg text-gray-600 max-w-3xl mx-auto leading-relaxed">
+          <div className="bg-white rounded-2xl p-10 border border-gray-200 shadow-sm">
+            <div className="text-center mb-8">
+              <h2 className="text-3xl font-bold text-gray-900 mb-3">Why Choose Our Services?</h2>
+              <p className="text-base text-gray-600 max-w-2xl mx-auto leading-relaxed">
                 Personalized recommendations based on your location and account eligibility.
               </p>
             </div>
             <div className="grid grid-cols-1 md:grid-cols-2 gap-8">
               <FeatureCard
-                icon={<WifiIcon className="h-10 w-10 text-blue-600" />}
+                icon={<WifiIcon className="h-8 w-8 text-blue-600" />}
                 title="Location-Based Plans"
                 description="Internet plans tailored to your house type and infrastructure"
               />
               <FeatureCard
-                icon={<GlobeAltIcon className="h-10 w-10 text-purple-600" />}
+                icon={<GlobeAltIcon className="h-8 w-8 text-purple-600" />}
                 title="Seamless Integration"
                 description="Manage all services from a single account"
               />
diff --git a/apps/portal/src/features/catalog/views/InternetConfigure.tsx b/apps/portal/src/features/catalog/views/InternetConfigure.tsx
index e05fa1af..bb65fe3b 100644
--- a/apps/portal/src/features/catalog/views/InternetConfigure.tsx
+++ b/apps/portal/src/features/catalog/views/InternetConfigure.tsx
@@ -8,9 +8,41 @@ export function InternetConfigureContainer() {
   const router = useRouter();
   const vm = useInternetConfigure();
 
+  // Debug: log current state
+  console.log("InternetConfigure state:", {
+    plan: vm.plan?.sku,
+    mode: vm.mode,
+    installation: vm.selectedInstallation?.sku,
+    addons: vm.selectedAddonSkus,
+  });
+
   const handleConfirm = () => {
+    console.log("handleConfirm called, current state:", {
+      plan: vm.plan?.sku,
+      mode: vm.mode,
+      installation: vm.selectedInstallation?.sku,
+      selectedInstallationSku: vm.selectedInstallation?.sku,
+    });
+
     const params = vm.buildCheckoutSearchParams();
-    if (!params) return;
+    if (!params) {
+      console.error("Cannot proceed to checkout: missing required configuration", {
+        plan: vm.plan?.sku,
+        mode: vm.mode,
+        installation: vm.selectedInstallation?.sku,
+      });
+      
+      // Determine what's missing
+      let missingItems = [];
+      if (!vm.plan) missingItems.push("plan selection");
+      if (!vm.mode) missingItems.push("access mode");
+      if (!vm.selectedInstallation) missingItems.push("installation option");
+      
+      alert(`Please complete the following before proceeding:\n- ${missingItems.join("\n- ")}`);
+      return;
+    }
+    
+    console.log("Navigating to checkout with params:", params.toString());
     router.push(`/checkout?${params.toString()}`);
   };
 
diff --git a/apps/portal/src/features/catalog/views/SimPlans.tsx b/apps/portal/src/features/catalog/views/SimPlans.tsx
index 2929ba5a..ea199657 100644
--- a/apps/portal/src/features/catalog/views/SimPlans.tsx
+++ b/apps/portal/src/features/catalog/views/SimPlans.tsx
@@ -236,52 +236,52 @@ export function SimPlansContainer() {
             </div>
           </div>
 
-          <div className="min-h-[400px] relative">
-            <div
-              className={`transition-all duration-500 ease-in-out ${activeTab === "data-voice" ? "opacity-100 translate-y-0" : "opacity-0 translate-y-4 absolute inset-0 pointer-events-none"}`}
-            >
-              <SimPlanTypeSection
-                title="Data + SMS + Voice Plans"
-                description={
-                  hasExistingSim
-                    ? "Family discount shown where eligible"
-                    : "Comprehensive plans with high-speed data, messaging, and calling"
-                }
-                icon={<DevicePhoneMobileIcon className="h-6 w-6 text-blue-600" />}
-                plans={plansByType.DataSmsVoice}
-                showFamilyDiscount={hasExistingSim}
-              />
-            </div>
-            <div
-              className={`transition-all duration-500 ease-in-out ${activeTab === "data-only" ? "opacity-100 translate-y-0" : "opacity-0 translate-y-4 absolute inset-0 pointer-events-none"}`}
-            >
-              <SimPlanTypeSection
-                title="Data Only Plans"
-                description={
-                  hasExistingSim
-                    ? "Family discount shown where eligible"
-                    : "Flexible data-only plans for internet usage"
-                }
-                icon={<GlobeAltIcon className="h-6 w-6 text-purple-600" />}
-                plans={plansByType.DataOnly}
-                showFamilyDiscount={hasExistingSim}
-              />
-            </div>
-            <div
-              className={`transition-all duration-500 ease-in-out ${activeTab === "voice-only" ? "opacity-100 translate-y-0" : "opacity-0 translate-y-4 absolute inset-0 pointer-events-none"}`}
-            >
-              <SimPlanTypeSection
-                title="Voice + SMS Only Plans"
-                description={
-                  hasExistingSim
-                    ? "Family discount shown where eligible"
-                    : "Plans focused on voice calling and messaging without data bundles"
-                }
-                icon={<PhoneIcon className="h-6 w-6 text-orange-600" />}
-                plans={plansByType.VoiceOnly}
-                showFamilyDiscount={hasExistingSim}
-              />
-            </div>
+          <div className="min-h-[500px] relative">
+            {activeTab === "data-voice" && (
+              <div className="animate-in fade-in duration-300">
+                <SimPlanTypeSection
+                  title="Data + SMS + Voice Plans"
+                  description={
+                    hasExistingSim
+                      ? "Family discount shown where eligible"
+                      : "Comprehensive plans with high-speed data, messaging, and calling"
+                  }
+                  icon={<DevicePhoneMobileIcon className="h-6 w-6 text-blue-600" />}
+                  plans={plansByType.DataSmsVoice}
+                  showFamilyDiscount={hasExistingSim}
+                />
+              </div>
+            )}
+            {activeTab === "data-only" && (
+              <div className="animate-in fade-in duration-300">
+                <SimPlanTypeSection
+                  title="Data Only Plans"
+                  description={
+                    hasExistingSim
+                      ? "Family discount shown where eligible"
+                      : "Flexible data-only plans for internet usage"
+                  }
+                  icon={<GlobeAltIcon className="h-6 w-6 text-purple-600" />}
+                  plans={plansByType.DataOnly}
+                  showFamilyDiscount={hasExistingSim}
+                />
+              </div>
+            )}
+            {activeTab === "voice-only" && (
+              <div className="animate-in fade-in duration-300">
+                <SimPlanTypeSection
+                  title="Voice + SMS Only Plans"
+                  description={
+                    hasExistingSim
+                      ? "Family discount shown where eligible"
+                      : "Plans focused on voice calling and messaging without data bundles"
+                  }
+                  icon={<PhoneIcon className="h-6 w-6 text-orange-600" />}
+                  plans={plansByType.VoiceOnly}
+                  showFamilyDiscount={hasExistingSim}
+                />
+              </div>
+            )}
           </div>
 
           <div className="mt-8 bg-gray-50 rounded-2xl p-8 max-w-4xl mx-auto">
diff --git a/apps/portal/src/features/checkout/hooks/useCheckout.ts b/apps/portal/src/features/checkout/hooks/useCheckout.ts
index 14adfc76..9fab65a2 100644
--- a/apps/portal/src/features/checkout/hooks/useCheckout.ts
+++ b/apps/portal/src/features/checkout/hooks/useCheckout.ts
@@ -215,13 +215,16 @@ export function useCheckout() {
 
   const navigateBackToConfigure = useCallback(() => {
     const urlParams = new URLSearchParams(params.toString());
-    const reviewStep = orderType === "Internet" ? "4" : "5";
-    urlParams.set("step", reviewStep);
+    // Remove the 'type' param as it's not needed in configure URLs
+    urlParams.delete('type');
+    
     const configureUrl =
       orderType === "Internet"
         ? `/catalog/internet/configure?${urlParams.toString()}`
         : `/catalog/sim/configure?${urlParams.toString()}`;
-    router.push(configureUrl);
+    
+    // Use Next.js router state to pass the step internally (not in URL)
+    router.push(configureUrl, { state: { returnToStep: 4 } } as any);
   }, [orderType, params, router]);
 
   return {
diff --git a/apps/portal/src/features/checkout/services/checkout.service.ts b/apps/portal/src/features/checkout/services/checkout.service.ts
index f2829ec2..63fc9ce3 100644
--- a/apps/portal/src/features/checkout/services/checkout.service.ts
+++ b/apps/portal/src/features/checkout/services/checkout.service.ts
@@ -1,5 +1,6 @@
 import { apiClient, getDataOrThrow } from "@/lib/api";
 import type { CheckoutCart, OrderConfigurations } from "@customer-portal/domain/orders";
+import type { ApiSuccessResponse } from "@customer-portal/domain/common";
 
 export const checkoutService = {
   /**
@@ -10,7 +11,7 @@ export const checkoutService = {
     selections: Record<string, string>,
     configuration?: OrderConfigurations
   ): Promise<CheckoutCart> {
-    const response = await apiClient.POST<CheckoutCart>("/checkout/cart", {
+    const response = await apiClient.POST<ApiSuccessResponse<CheckoutCart>>("/api/checkout/cart", {
       body: {
         orderType,
         selections,
@@ -18,13 +19,17 @@ export const checkoutService = {
       },
     });
 
-    return getDataOrThrow(response, "Failed to build checkout cart");
+    const wrappedResponse = getDataOrThrow(response, "Failed to build checkout cart");
+    if (!wrappedResponse.success) {
+      throw new Error("Failed to build checkout cart");
+    }
+    return wrappedResponse.data;
   },
 
   /**
    * Validate checkout cart
    */
   async validateCart(cart: CheckoutCart): Promise<void> {
-    await apiClient.POST("/checkout/validate", { body: cart });
+    await apiClient.POST("/api/checkout/validate", { body: cart });
   },
 };
diff --git a/apps/portal/src/features/checkout/views/CheckoutContainer.tsx b/apps/portal/src/features/checkout/views/CheckoutContainer.tsx
index 0610ea6e..80da36a4 100644
--- a/apps/portal/src/features/checkout/views/CheckoutContainer.tsx
+++ b/apps/portal/src/features/checkout/views/CheckoutContainer.tsx
@@ -221,7 +221,7 @@ export function CheckoutContainer() {
             onClick={navigateBackToConfigure}
             className="flex-1 px-6 py-4 border border-gray-300 rounded-lg text-center hover:bg-gray-50 transition-colors font-medium"
           >
-            ← Back to Review
+            ← Back to Configuration
           </button>
           <button
             type="button"