.page-header {
            padding: 12px 0 0 0;
        }

        .category-select-wrapper {
            display: flex;
            justify-content: flex-end;
            margin-bottom: 8px;
        }

        .category-select {
            text-align: right;
            text-align-last: right;
            width: auto;
            padding: 4px 24px 4px 8px;
            border: none;
            font-size: 13px;
            font-weight: 600;
            outline: none;
            background-color: transparent;
            appearance: none;
            background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
            background-repeat: no-repeat;
            background-position: right 4px center;
            background-size: 12px;
            cursor: pointer;
            color: #555;
            transition: color 0.2s;
        }

        .category-select:hover {
            color: #000;
        }

        .category-select:focus {
            border-color: transparent;
        }
        .active-filters-bar {
            display: flex;
            padding: 6px 0;
            margin-bottom: 6px;
            background: #fff;
            position: relative;
            z-index: 1;
        }

        @media (max-width: 768px) {
            .active-filters-bar {
                padding: 6px 16px;
                margin-left: -16px;
                margin-right: -16px;
            }
        }

        .sticky-filters-container {
            position: sticky;
            top: calc(59px + var(--top-banner-height, 0px));
            z-index: 990;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            display: flex;
            flex-direction: column;
            transition: top 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }

        header.header-scroll-down + main .sticky-filters-container {
            top: 59px;
        }

        @media (max-width: 768px) {
            .sticky-filters-container {
                top: calc(52px + var(--top-banner-height, 0px));
                margin-left: -16px;
                margin-right: -16px;
                border-bottom: 0.5px solid rgba(0, 0, 0, 0.1);
            }

            header.header-scroll-down + main .sticky-filters-container {
                top: 52px;
            }
        }

        .sub-categories-tabs {
            border-radius: 10px;
            border: 20px;
            background: #ffffffa6;
            display: flex;
            overflow-x: auto;
            gap: 10px;
            padding: 9px 10px;
            scroll-behavior: smooth;
            border: 1px solid rgba(0, 0, 0, 0.08);
        }

        @media (max-width: 768px) {
            .sub-categories-tabs {
                border-radius: 0px;
                margin: 0;
                border: none;
                padding: 9px 16px;
            }
        }

        .sub-categories-tabs::-webkit-scrollbar {
            display: none;
        }

        .sub-tabs-scroll-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid rgba(0, 0, 0, 0.08);
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            color: #1e293b;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.16);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            cursor: pointer;
            z-index: 995;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s ease, background 0.2s ease;
            pointer-events: none;
        }

        .sub-tabs-scroll-arrow.visible {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
        }

        .sub-tabs-scroll-arrow.arrow-left {
            left: 8px;
        }

        .sub-tabs-scroll-arrow.arrow-right {
            right: 62px; /* Xịch vô để chừa chỗ cho nút mở rộng hình vuông trên PC */
            z-index: 997;
        }

        .sub-tabs-scroll-arrow:hover {
            background: rgba(255, 255, 255, 0.96);
            transform: translateY(-50%) scale(1.08);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.22);
        }

        .sub-tabs-scroll-arrow:active {
            transform: translateY(-50%) scale(0.94);
        }

        /* Khung bao nút mở rộng hình vuông và hiệu ứng mờ dần hòa trộn bên trái (không che lẹm viền nút) */
        .sub-tabs-expand-wrap {
            position: absolute;
            right: 0;
            top: 0;
            bottom: 0;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            padding-right: 10px;
            padding-left: 36px;
            background: linear-gradient(to right, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.85) 45%, rgba(255, 255, 255, 0.98) 75%, #ffffff 100%);
            pointer-events: none;
            z-index: 996;
            border-radius: 0 10px 10px 0;
        }

        /* Nút mũi tên xuống là hình vuông hoàn chỉnh, không bị lẹm viền hay méo góc */
        .sub-tabs-expand-btn {
            pointer-events: auto;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            border: 1px solid #e2e8f0;
            background: #ffffff;
            color: #334155;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            cursor: pointer;
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            box-sizing: border-box;
            flex-shrink: 0;
            padding: 0;
            margin: 0;
            line-height: 1;
        }

        .sub-tabs-expand-btn i {
            display: flex;
            align-items: center;
            justify-content: center;
            line-height: 1;
        }

        .sub-tabs-expand-btn:hover {
            background: #f8fafc;
            color: var(--primary, #00b14f);
            border-color: rgba(0, 177, 79, 0.4);
            box-shadow: 0 4px 14px rgba(0, 177, 79, 0.18);
            transform: scale(1.04);
        }

        .sub-tabs-expand-btn:active {
            transform: scale(0.96);
        }

        @media (max-width: 768px) {
            .sub-tabs-scroll-arrow {
                display: none !important;
            }
            .sub-tabs-expand-wrap {
                padding-right: 12px;
                padding-left: 32px;
                border-radius: 0;
            }
            .sub-tabs-expand-btn {
                width: 34px;
                height: 34px;
                border-radius: 6px;
                font-size: 12px;
            }
            .sub-categories-tabs {
                padding-right: 58px !important;
            }
        }

        @media (min-width: 769px) {
            .sub-tabs-scroll-arrow.arrow-right {
                right: 50px;
            }
            .sub-categories-tabs {
                padding-right: 92px;
            }
        }

        .tab-btn {
            white-space: nowrap;
            padding: 8px 16px;
            background: #f7f8f9;
            border-radius: 20px;
            border: 1px solid transparent;
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
            color: #4a4a4a;
            transition: all 0.2s ease;
        }

        .tab-btn.active {
            background: var(--primary-soft, #f0f6f2);
            border-color: var(--primary, #4d835f);
            color: var(--primary, #4d835f);
            font-weight: 600;
        }

        .tab-btn.out-of-stock {
            opacity: 0.45 !important;
            color: #888888 !important;
            background: #f0f0f0 !important;
            border: 1px dashed #cccccc !important;
            filter: grayscale(0.4);
        }

        .tab-btn.out-of-stock.active {
            opacity: 0.75 !important;
            background: #eaf2ed !important;
            border: 1.5px dashed var(--primary, #4d835f) !important;
            color: var(--primary, #4d835f) !important;
            font-weight: 600 !important;
        }

        /* Product Loading Skeleton */
        .skeleton-card {
            background: #fff;
            border-radius: 12px;
            padding: 12px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
            border: 1px solid #f0f2f5;
        }

        .skeleton-img {
            width: 100%;
            aspect-ratio: 1;
            background: #f0f0f0;
            border-radius: 8px;
            animation: pulse 1.5s infinite;
        }

        .skeleton-text {
            height: 14px;
            background: #f0f0f0;
            border-radius: 4px;
            width: 80%;
            animation: pulse 1.5s infinite;
        }

        .skeleton-price {
            height: 16px;
            background: #f0f0f0;
            border-radius: 4px;
            width: 50%;
            margin-top: 4px;
            animation: pulse 1.5s infinite;
        }

        @keyframes pulse {
            0% { opacity: 0.6; }
            50% { opacity: 1; }
            100% { opacity: 0.6; }
        }

        #next-subgroup-wrapper {
            padding: 24px 0 40px;
            display: none;
        }

        #next-subgroup-btn {
            width: 100%;
            padding: 16px;
            background: #f8f9fa;
            border: 1px solid #e0e0e0;
            border-radius: 12px;
            text-align: center;
            cursor: pointer;
            transition: background-color 0.2s;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
        }

        #next-subgroup-btn:active {
            background: #e9ecef;
        }

        .nsb-msg {
            font-size: 13px;
            color: #676767;
        }

        .nsb-next {
            font-size: 15px;
            color: var(--primary, #4d835f);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* ─── Premium Filter Modal ────────────────────────────── */
        .filter-tab-btn.active {
            background: #fff !important;
            color: var(--primary) !important;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
        }

        .filter-option-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 16px;
            background: #f7f8f9;
            border-radius: 10px;
            margin-bottom: 8px;
            cursor: pointer;
            transition: all 0.2s;
            border: 1px solid transparent;
            font-size: 14px;
            font-weight: 500;
            color: #333;
        }

        .filter-option-item:active {
            background: #f0f2f5;
        }

        .filter-option-item.selected {
            background: #e8f5e9;
            border-color: var(--primary);
            color: var(--primary);
            font-weight: 600;
        }

        .filter-option-tick {
            color: var(--primary);
            font-size: 14px;
            display: none;
        }

        .filter-option-item.selected .filter-option-tick {
            display: block;
        }

        .filter-options-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 8px;
        }

        .filter-grid-item {
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 10px 8px;
            background: #f7f8f9;
            border-radius: 10px;
            cursor: pointer;
            font-size: 13px;
            font-weight: 500;
            transition: all 0.2s;
            border: 1px solid transparent;
            height: 44px;
            color: #333;
        }

        .filter-grid-item:active {
            background: #f0f2f5;
        }

        .filter-grid-item.selected {
            background: #e8f5e9;
            border-color: var(--primary);
            color: var(--primary);
            font-weight: 600;
        }

        .filter-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: rgba(0, 0, 0, 0.4);
            backdrop-filter: blur(4px);
            z-index: 2000;
            display: none;
            align-items: center;
            justify-content: center;
        }

        .filter-modal-container {
            width: 480px;
            max-width: 90%;
            height: auto;
            max-height: 85vh;
            background: #fff;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            display: flex;
            flex-direction: column;
            overflow: hidden;
            animation: filterModalFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        @keyframes filterModalFadeIn {
            from {
                opacity: 0;
                transform: scale(0.95) translateY(10px);
            }
            to {
                opacity: 1;
                transform: scale(1) translateY(0);
            }
        }

        @media (max-width: 767px) {
            .filter-modal {
                background: #fff;
                backdrop-filter: none;
                align-items: stretch;
                justify-content: stretch;
                height: 100vh;
                height: 100dvh;
            }

            .filter-modal-container {
                width: 100%;
                max-width: 100%;
                height: 100%;
                height: 100dvh;
                max-height: 100vh;
                max-height: 100dvh;
                border-radius: 0;
                box-shadow: none;
                animation: filterModalSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            }
        }

        @keyframes filterModalSlideUp {
            from { transform: translateY(100%); }
            to { transform: translateY(0); }
        }

        .filter-modal-footer {
            padding: 16px;
            border-top: 1px solid #f0f2f5;
            display: flex;
            gap: 12px;
            background: #fff;
            box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.03);
            padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
        }

        .active-filters-bar {
            display: flex;
            padding: 8px 16px;
            background: transparent;
            font-size: 13px;
            color: #676767;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
            overflow-x: auto;
            overflow-y: hidden;
            scrollbar-width: none;
            -ms-overflow-style: none;
            -webkit-overflow-scrolling: touch;
            border-bottom: 1px solid #f0f2f5;
            white-space: nowrap;
            box-sizing: border-box;
        }

        .active-filters-bar::-webkit-scrollbar {
            display: none !important;
        }

        .active-filters-wrapper {
            position: relative;
        }

        .filter-pill {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            color: #333;
            background: #f5f6f8;
            border: 1px solid #e2e8f0;
            cursor: pointer;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all 0.2s ease;
            user-select: none;
        }
        .filter-pill:hover {
            background: #edf2f7;
            border-color: #cbd5e1;
        }
        .filter-pill.active {
            background: #e8f5e9;
            color: var(--primary, #00b14f);
            border: 1.5px solid var(--primary, #00b14f);
            font-weight: 700;
            box-shadow: 0 2px 6px rgba(0, 177, 79, 0.15);
        }
        .filter-pill .pill-caret {
            font-size: 10px;
            transition: transform 0.2s ease;
            opacity: 0.75;
        }
        .filter-pill.active .pill-caret {
            color: var(--primary, #00b14f);
            opacity: 1;
        }

        .sub-categories-tabs {
            display: flex !important;
        }

        /* Responsive Single Filter Modal */
        .single-filter-modal-backdrop {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(2px);
            z-index: 10000;
            display: flex;
            align-items: flex-end;
            justify-content: center;
        }
        .single-filter-modal-box {
            width: 100vw;
            height: 100vh;
            background: #fff;
            display: flex;
            flex-direction: column;
            box-sizing: border-box;
            animation: sfModalSlideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }
        @media (min-width: 768px) {
            .single-filter-modal-backdrop {
                align-items: center;
            }
            .single-filter-modal-box {
                width: 480px;
                max-height: 85vh;
                height: auto;
                border-radius: 16px;
                box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
                overflow: hidden;
                animation: sfModalPop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
            }
        }
        @keyframes sfModalSlideUp {
            from { transform: translateY(100%); }
            to { transform: translateY(0); }
        }
        @keyframes sfModalPop {
            from { opacity: 0; transform: scale(0.92); }
            to { opacity: 1; transform: scale(1); }
        }

        /* Category Mega Menu Modal styling matching single-filter-modal */
        .sf-category-modal-box {
            display: flex;
            flex-direction: column;
        }
        @media (max-width: 767px) {
            .sf-category-modal-box {
                width: 100vw !important;
                height: 100vh !important;
                max-height: 100vh !important;
                border-radius: 0 !important;
            }
            .sf-category-modal-box .mega-parent-list {
                width: 150px !important;
                min-width: 135px !important;
                padding: 8px 6px !important;
            }
            .sf-category-modal-box .mega-sub-panel {
                padding: 12px 14px !important;
            }
            .sf-category-modal-box .mega-parent-item {
                padding: 10px 8px !important;
                font-size: 13px !important;
            }
        }
        @media (min-width: 768px) {
            .sf-category-modal-box {
                width: 720px !important;
                height: 580px !important;
                max-height: 85vh !important;
            }
        }

        .sf-category-modal-box .mega-parent-item-main {
            cursor: pointer;
            width: 100%;
        }
        .sf-category-modal-box .mega-sub-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
            padding-bottom: 10px;
            border-bottom: 1px solid #edf2f7;
        }
        .sf-category-modal-box .mega-sub-title {
            margin: 0;
            font-size: 15px;
            font-weight: 700;
            color: #1e293b;
        }
        .sf-category-modal-box .mega-sub-badge {
            font-size: 12px;
            color: #64748b;
            background: #f1f5f9;
            padding: 3px 8px;
            border-radius: 6px;
            font-weight: 500;
        }
        .sf-category-modal-box .mega-sub-item.active {
            background: #eaf4ed;
            border-color: var(--primary, #4d835f);
            color: var(--primary, #4d835f);
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(77, 131, 95, 0.12);
        }
        .sf-category-modal-box .mega-sub-item.active .mega-sub-count {
            color: var(--primary, #4d835f);
            font-weight: 600;
        }

        /* Danh mục cha và con hết hàng: mờ và có tag Hết hàng */
        .sf-category-modal-box .mega-parent-item.out-of-stock {
            opacity: 0.52;
        }
        .sf-category-modal-box .mega-parent-item.out-of-stock:hover,
        .sf-category-modal-box .mega-parent-item.out-of-stock.active {
            opacity: 0.85;
        }
        .sf-category-modal-box .mega-parent-oos-tag {
            font-size: 10px;
            color: #ef4444;
            background: #fee2e2;
            padding: 1px 5px;
            border-radius: 4px;
            margin-left: 6px;
            font-weight: 500;
        }
        .sf-category-modal-box .mega-sub-item.out-of-stock {
            opacity: 0.52;
            background: #f8fafc;
            border-color: #e2e8f0;
        }
        .sf-category-modal-box .mega-sub-item.out-of-stock:hover {
            opacity: 0.85;
        }
        .sf-category-modal-box .mega-sub-oos-tag {
            font-size: 10px;
            color: #ef4444;
            background: #fee2e2;
            padding: 2px 6px;
            border-radius: 4px;
            margin-left: 6px;
            font-weight: 500;
            display: inline-block;
        }

        .single-filter-modal-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            border-bottom: 1px solid #f0f2f5;
            background: #fff;
        }
        .sf-modal-title {
            margin: 0;
            font-size: 16px;
            font-weight: 700;
            color: #1c1c1c;
        }
        .sf-modal-close-btn {
            border: none;
            background: #f2f4f7;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: #555;
            cursor: pointer;
            transition: all 0.2s;
        }
        .sf-modal-close-btn:hover {
            background: #e4e7ec;
            color: #111;
        }
        .single-filter-modal-body {
            flex: 1;
            overflow-y: auto;
            padding: 12px 16px;
            -webkit-overflow-scrolling: touch;
        }
        .sf-option-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 13px 16px;
            border-radius: 12px;
            margin-bottom: 6px;
            font-size: 14px;
            font-weight: 500;
            color: #222;
            background: #f8f9fa;
            cursor: pointer;
            transition: all 0.2s ease;
            border: 1px solid transparent;
        }
        .sf-option-item:hover {
            background: #f1f3f5;
        }
        .sf-option-item.active {
            background: #e8f5e9;
            color: var(--primary, #00b14f);
            font-weight: 700;
            border-color: rgba(0, 177, 79, 0.3);
        }
        .sf-option-item .check-icon {
            font-size: 14px;
            color: var(--primary, #00b14f);
            display: none;
        }
        .sf-option-item.active .check-icon {
            display: inline-block;
        }
        .single-filter-modal-footer {
            padding: 14px 16px;
            border-top: 1px solid #f0f2f5;
            background: #fff;
            display: flex;
            gap: 10px;
        }
        .sf-modal-clear-btn {
            width: 100%;
            padding: 12px;
            border: 1px solid #e2e8f0;
            background: #f8fafc;
            border-radius: 12px;
            color: #475569;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.2s;
        }
        .sf-modal-clear-btn:hover {
            background: #f1f5f9;
            color: #0f172a;
        }

        .active-filter-tag {
            flex-shrink: 0;
            white-space: nowrap;
        }

        .brand-banner-wrapper {
            margin: 0 0 0 0;
            width: 100vw;
            position: relative;
            left: 50%;
            right: 50%;
            margin-left: -50vw;
            margin-right: -50vw;
            padding: 0;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .brand-banner-card {
            position: relative;
            width: 100%;
            border-radius: 0;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            border: none;
            background: transparent;
            cursor: pointer;
        }

        .brand-banner-card:hover {
            opacity: 0.98;
        }

        .brand-banner-img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: 0;
        }



        @media (min-width: 768px) {
            .active-filters-bar {
                background: #ffffff;
                padding: 10px 16px;
                border-radius: 12px;
                border: 1px solid #eef0f3;
                border-bottom: 1px solid #eef0f3;
                margin-bottom: 8px;
                box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
            }
        }