/* ================= TỐI ƯU HÓA RESET & CHẶN TRÀN MÀN HÌNH ================= */
        *, *::before, *::after { box-sizing: border-box; }
        html, body { max-width: 100vw !important; overflow-x: hidden !important; }

        :root {
            --bg-color: #fff; 
            --text-dark: #222;
            --text-gray: #666;
            --white: #fff;
            --border-light: #eaeaea;
            --discount-red: #ff8b6a; 
            --star-gold: #ffd700;
            --gold-color: #c29c5b; 
        }

        body {
    font-family: 'Quicksand', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-dark);
}

        /* --- Header Section (Accessories) --- */
        .page-header {
            max-width: 1400px;
            margin: 40px auto 20px;
            padding: 0 50px;
        }

        .page-title {
            font-size: 32px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .page-desc {
            font-size: 14px;
            color: var(--text-gray);
            line-height: 1.6;
            margin-bottom: 30px;
        }

        /* --- Filter Bar --- */
        .toolbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
            padding: 15px 0;
            margin-bottom: 40px;
        }

        .filter-btn {
            background: var(--white);
            border: 2px solid var(--text-dark);
            padding: 8px 25px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sort-select {
            padding: 8px 15px;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-size: 14px;
            font-family: 'Jost', sans-serif;
            color: var(--text-dark);
            min-width: 200px;
        }

        /* --- Product Grid --- */
        .products-section {
            padding: 0 50px 60px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .product-grid {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 30px 20px;
            align-items: start;
        }

        .product-card {
            text-align: center;
            display: flex;
            flex-direction: column;
            height: 100%;
            width: 100%; 
        }

        .product-image-wrapper {
            background-color: #fcfcfc;
            position: relative;
            aspect-ratio: 1/1;
            margin-bottom: 15px;
            width: 100%;
        }

        .product-image {
            width: 100%;
            height: 100%;
            object-fit: contain; 
            padding: 20px;
        }

        .discount-badge, .sold-out-badge {
            position: absolute;
            top: 0;
            left: 0;
            color: white;
            font-size: 10px;
            font-weight: 700;
            padding: 5px 10px;
            z-index: 2;
            text-transform: uppercase;
        }
        .discount-badge { background-color: var(--discount-red); }
        .sold-out-badge { background-color: #444; }

        .product-title {
            font-size: 14px;
            font-weight: 700;
            margin: 0 0 5px;
            text-transform: uppercase;
        }

        .product-subtitle {
            font-size: 12px;
            color: var(--text-gray);
            margin-bottom: 10px;
            min-height: 36px; 
        }

        /* Star Rating */
        .product-rating {
            color: var(--star-gold);
            font-size: 12px;
            margin-bottom: 10px;
        }
        .product-rating span {
            color: var(--text-gray);
            margin-left: 5px;
        }

        .product-price-wrap {
            margin-bottom: 15px;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
            flex-grow: 1; 
        }

        .old-price {
            font-size: 13px;
            color: #999;
            text-decoration: line-through;
        }

        .current-price {
            font-size: 15px;
            font-weight: 600;
            color: var(--discount-red); 
        }
        .price-black { color: var(--text-dark) !important; }

        /* Nút Add to cart viền đen giống ảnh */
        .btn-outline {
            background-color: transparent;
            color: var(--text-dark);
            border: 2px solid var(--text-dark);
            width: 100%;
            padding: 12px 0;
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .btn-outline.disabled {
            border-color: #ccc;
            color: #aaa;
            cursor: not-allowed;
        }

        .btn-outline:not(.disabled):hover {
            background-color: var(--text-dark);
            color: var(--white);
        }

        /* --- SEO ACCORDION CONTENT (Giống page-1.php) --- */
        .seo-accordion-container {
            max-width: 900px; 
            margin: 0 auto 80px;
            padding: 0 20px;
        }

        .seo-main-title {
            text-align: center;
            color: var(--gold-color);
            font-size: 26px;
            font-weight: 300;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 20px;
        }
        
        .seo-intro-text {
            text-align: center;
            color: var(--text-gray);
            font-size: 15px;
            line-height: 1.6;
            margin-bottom: 40px;
            padding: 0 20px;
        }

        .seo-accordion-item {
            background-color: var(--white);
            border: 1px solid var(--gold-color);
            border-radius: 40px;
            margin-bottom: 15px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .seo-accordion-header {
            display: flex;
            align-items: center;
            padding: 15px 30px;
            cursor: pointer;
            user-select: none;
        }

        .seo-acc-num {
            font-size: 32px;
            font-weight: 300;
            color: var(--gold-color);
            margin-right: 25px;
            min-width: 45px;
        }

        .seo-acc-title {
            flex-grow: 1;
            font-size: 15px;
            color: var(--text-dark);
            line-height: 1.5;
            font-weight: 400;
        }

        .seo-acc-icon {
            font-size: 18px;
            color: var(--gold-color);
            margin-left: 15px;
            transition: transform 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            flex-shrink: 0;
        }

        .seo-accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .seo-accordion-content p {
            margin: 0 0 10px 0;
            padding: 0 30px 0 100px;
            color: var(--text-gray);
            font-size: 14.5px;
            line-height: 1.6;
        }

        .seo-accordion-content p:last-child {
            padding-bottom: 25px;
        }

        .seo-accordion-item.active {
            border-radius: 30px; 
            box-shadow: 0 5px 20px rgba(194, 156, 91, 0.1);
        }
        .seo-accordion-item.active .seo-accordion-content {
            max-height: 1200px; 
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
        }

        @media (max-width: 768px) {
            .page-header, .products-section { padding-left: 15px; padding-right: 15px; }
            .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px; }
            .toolbar { flex-direction: column; gap: 15px; align-items: stretch; }
            .sort-select { width: 100%; }
            
            /* Tinh chỉnh Accordion Mobile */
            .seo-accordion-container { padding: 0 15px !important; }
            .seo-main-title { font-size: 20px !important; }
            .seo-intro-text { font-size: 14px; padding: 0; margin-bottom: 30px; }
            .seo-accordion-header { padding: 15px !important; }
            .seo-acc-num { font-size: 22px !important; margin-right: 15px !important; min-width: 30px !important; }
            .seo-acc-title { font-size: 13px !important; }
            .seo-accordion-content p { padding: 0 15px 10px 60px !important; font-size: 13.5px !important; }
            .seo-accordion-content p:last-child { padding-bottom: 20px !important; }
        }