:root {
            --color-brand: #c4592b; 
            --color-brand-hover: #a04620;
            --color-dark: #1a1a1a;
            --color-text: #4a5568;
            --color-light: #f8f9fa;
            --color-border: #e2e8f0;
            --color-white: #ffffff;
            --font-main: 'Inter', sans-serif;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            --radius: 12px;
            --container-width: 1200px;
            --transition-soft: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: var(--font-main); color: var(--color-text); background-color: var(--color-light); line-height: 1.6; overflow-x: hidden; }
        a { text-decoration: none; color: inherit; transition: var(--transition-soft); cursor: pointer; }
        ul { list-style: none; }
        img { max-width: 100%; display: block; }
        button { cursor: pointer; border: none; font-family: inherit; }

        #preloader {
            position: fixed; inset: 0; 
            background: var(--color-brand); 
            z-index: 9999;
            display: flex; flex-direction: column; justify-content: center; align-items: center;
            transition: opacity 0.8s ease-out, visibility 0.8s;
        }
        .loader-content { text-align: center; width: 150px; }
        
        .loader-line-wrapper {
            width: 100%;
            height: 2px;
            background: rgba(255, 255, 255, 0.2);
            margin-top: 20px;
            border-radius: 2px;
            overflow: hidden;
            position: relative;
        }
        
        .loader-line {
            width: 50%;
            height: 100%;
            background: #fff;
            position: absolute;
            left: 0;
            top: 0;
            animation: lineMove 1.5s ease-in-out infinite;
        }

        @keyframes lineMove {
            0% { left: -50%; width: 50%; }
            50% { left: 25%; width: 75%; }
            100% { left: 100%; width: 20%; }
        }

        .reveal {
            opacity: 1;
            transform: translateY(50px);
            transition: all 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
        }
        .reveal.active {
            opacity: 1;
            transform: translateY(0);
        }

        .container { max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }
        .flex { display: flex; }
        .items-center { align-items: center; }
        .justify-between { justify-content: space-between; }
        .grid { display: grid; }
        .hidden { display: none !important; }
        
        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
        @keyframes slideUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
        @keyframes shimmer { 0% { background-position: -1000px 0; } 100% { background-position: 1000px 0; } }
        
        .animate-fade-in { animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
        .animate-slide-up { animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards; opacity: 0; }

        .skeleton {
            background: #f6f7f8;
            background-image: linear-gradient(to right, #f6f7f8 0%, #edeef1 20%, #f6f7f8 40%, #f6f7f8 100%);
            background-repeat: no-repeat;
            background-size: 1000px 100%; 
            animation: shimmer 1.5s infinite linear;
            position: absolute; inset: 0; z-index: 10;
        }

        .btn { padding: 14px 32px; border-radius: 50px; font-weight: 600; display: inline-flex; align-items: center; gap: 10px; transition: var(--transition-soft); position: relative; overflow: hidden; z-index: 1; }
        .btn::after { content: ''; position: absolute; top: 0; left: 0; width: 0%; height: 100%; background: rgba(0,0,0,0.1); transition: width 0.3s ease; z-index: -1; }
        .btn:hover::after { width: 100%; }
        .btn:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
        .btn-primary { background: var(--color-brand); color: white; }
        .btn-outline { border: 2px solid var(--color-border); color: var(--color-dark); background: transparent; }
        .btn-outline:hover { border-color: var(--color-dark); }
        .btn-active { background: var(--color-brand); color: white; border-color: var(--color-brand); }

        .header { 
            background: var(--color-brand); 
            box-shadow: var(--shadow-sm); position: sticky; top: 0; z-index: 1000; height: 80px; display: flex; align-items: center; transition: all 0.3s; 
        }
        
        .header-inner { 
            display: flex; 
            justify-content: center; 
            align-items: center; 
            width: 100%;
            position: relative; 
        }
        
        .logo { 
            position: absolute; 
            left: 20px; 
            top: 50%;
            transform: translateY(-50%);
            display: flex; 
            align-items: center; 
            z-index: 10;
            cursor: pointer;
        }
        
        .logo-img { 
            height: 60px; 
            background: transparent; 
            object-fit: contain; 
        }

        .header-right {
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            display: flex;
            align-items: center;
            z-index: 10;
        }

        .nav-menu { display: flex; gap: 40px; }
        .nav-link { 
            font-weight: 600; color: rgba(255,255,255,0.85); padding: 10px 0; transition: var(--transition-soft); position: relative; font-size: 0.95rem;
        }
        .nav-link::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: white; transition: width 0.3s; }
        .nav-link:hover, .nav-link.active { color: white; }
        .nav-link:hover::after, .nav-link.active::after { width: 100%; }

        .search-box { position: relative; width: 250px; }
        .search-input { width: 100%; padding: 12px 45px 12px 20px; border-radius: 50px; border: none; background: rgba(255,255,255,0.15); color: white; font-size: 0.9rem; outline: none; transition: var(--transition-soft); }
        .search-input::placeholder { color: rgba(255,255,255,0.6); }
        .search-input:focus { background: white; color: var(--color-dark); }
        .search-input:focus::placeholder { color: #a0aec0; }
        
        .search-btn { position: absolute; right: 15px; top: 50%; transform: translateY(-50%); color: white; background: none; pointer-events: none; }
        .search-input:focus + .search-btn { color: var(--color-brand); }

        .search-results { position: absolute; top: 120%; right: 0; width: 320px; background: white; border-radius: var(--radius); box-shadow: var(--shadow-lg); overflow: hidden; display: none; border: 1px solid var(--color-border); z-index: 1001; }
        .search-item { padding: 15px; display: flex; align-items: center; border-bottom: 1px solid #f1f1f9; cursor: pointer; transition: background 0.2s; color: var(--color-dark); }
        .search-item:hover { background: #f8fafc; }
        .search-item img { width: 50px; height: 50px; border-radius: 8px; margin-right: 15px; object-fit: cover; }

        .mobile-toggle { display: none; font-size: 1.5rem; color: white; background: none; }
        
        .mobile-menu-overlay { display: none; position: absolute; top: 80px; left: 0; width: 100%; background: white; border-top: 1px solid var(--color-border); box-shadow: var(--shadow-md); padding: 20px; flex-direction: column; gap: 15px; }
        .mobile-menu-overlay .nav-link { color: var(--color-dark); }
        .mobile-menu-overlay .nav-link::after { background: var(--color-brand); }
        .mobile-menu-overlay .nav-link:hover { color: var(--color-brand); }

        .breadcrumbs { padding: 20px 0; font-size: 0.9rem; color: #718096; background: linear-gradient(to right, #fffbf7, #fff); border-bottom: 1px solid #f0f0f0; }
        .breadcrumb-item { display: inline-flex; align-items: center; }
        .breadcrumb-item:not(:last-child)::after { content: '›'; margin: 0 10px; color: #cbd5e0; font-size: 1.2rem; line-height: 1; }
        .breadcrumb-link { cursor: pointer; transition: color 0.2s; font-weight: 500; }
        .breadcrumb-link:hover { color: var(--color-brand); }
        .breadcrumb-current { font-weight: 700; color: var(--color-brand); }

        .hero-slider { position: relative; height: 650px; overflow: hidden; background: #000; }
        .slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1.5s ease; background-size: cover; background-position: center; display: flex; align-items: center; justify-content: center; }
        .slide.active { opacity: 1; z-index: 1; }
        .slide-overlay { position: absolute; inset: 0; background: linear-gradient(to bottom, rgba(0,0,0,0.3), rgba(0,0,0,0.6)); }
        .slide-content { position: relative; z-index: 5; text-align: center; color: white; max-width: 900px; padding: 20px; transform: translateY(50px); opacity: 0; transition: all 1s ease 0.5s; }
        .slide.active .slide-content { transform: translateY(0); opacity: 1; }
        .slide-title { font-size: 4rem; font-weight: 800; margin-bottom: 20px; line-height: 1.1; letter-spacing: -1px; }
        .slide-desc { font-size: 1.4rem; font-weight: 300; margin-bottom: 40px; color: rgba(255,255,255,0.95); }
        
        .slider-nav { position: absolute; bottom: 40px; right: 40px; display: flex; gap: 10px; z-index: 50; pointer-events: auto; }
        .slider-btn { width: 60px; height: 60px; border-radius: 50%; background: rgba(255,255,255,0.1); backdrop-filter: blur(5px); border: 1px solid rgba(255,255,255,0.2); color: white; display: flex; align-items: center; justify-content: center; transition: all 0.3s; cursor: pointer; }
        .slider-btn:hover { background: var(--color-brand); border-color: var(--color-brand); }

        .slogan-section { padding: 60px 0; background: white; border-bottom: 1px solid #f0f0f0; }
        .home-slogan-section { margin-top: -60px; position:relative; z-index:10; background:transparent; border:none; padding-top:0; }

        .slogan-card { background: #fcfcfc; padding: 30px; border-radius: 16px; border: 1px solid #f0f0f0; display: flex; align-items: center; gap: 20px; transition: var(--transition-soft); }
        .slogan-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--color-brand); }
        .slogan-icon { font-size: 2.5rem; color: var(--color-brand); background: rgba(196, 89, 43, 0.1); width: 70px; height: 70px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }

        .categories-wrapper { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .category-card { position: relative; height: 350px; border-radius: 20px; overflow: hidden; cursor: pointer; box-shadow: var(--shadow-sm); }
        .category-bg { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
        .category-card:hover .category-bg { transform: scale(1.05); }
        .category-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.1) 50%, transparent 100%); display: flex; flex-direction: column; justify-content: flex-end; padding: 30px; transition: var(--transition-soft); }
        .category-card:hover .category-overlay { background: linear-gradient(to top, rgba(196, 89, 43, 0.85) 0%, rgba(196, 89, 43, 0.2) 100%); }
        .category-content { transform: translateY(15px); transition: var(--transition-soft); }
        .category-card:hover .category-content { transform: translateY(0); }
        .category-title { color: white; font-size: 1.6rem; font-weight: 700; margin-bottom: 8px; }
        .category-desc { color: rgba(255,255,255,0.9); font-size: 0.95rem; line-height: 1.5; max-height: 0; opacity: 0; overflow: hidden; transition: var(--transition-soft); }
        .category-card:hover .category-desc { max-height: 100px; opacity: 1; margin-top: 10px; }

        .category-tabs { display: flex; justify-content: center; gap: 10px; margin-bottom: 40px; flex-wrap: wrap; }
        .products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 30px; }
        .product-card { background: white; border-radius: 16px; overflow: hidden; border: 1px solid #eee; transition: var(--transition-soft); cursor: pointer; display: flex; flex-direction: column; position: relative; }
        .product-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); border-color: rgba(196, 89, 43, 0.3); }
        .product-img-wrap { height: 450px; position: relative; overflow: hidden; background: #f8fafc; }
        .product-img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; opacity: 0; }
        .product-img.loaded { opacity: 1; }
        .product-card:hover .product-img { transform: scale(1.08); }
        .product-info { padding: 20px; display: flex; flex-direction: column; flex-grow: 1; }
        .product-cat-name { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; color: #a0aec0; font-weight: 600; margin-bottom: 5px; }
        .product-name { font-size: 1.1rem; font-weight: 700; color: var(--color-dark); margin-bottom: 10px; line-height: 1.4; }
        .product-price { font-size: 1.25rem; font-weight: 800; color: var(--color-brand); margin-top: auto; }
        
        .contact-banner-section { background: var(--color-brand); color: white; padding: 50px 0; position: relative; overflow: hidden; }
        .contact-banner-bg { position: absolute; inset: 0; opacity: 0.1; background: url('https://www.transparenttextures.com/patterns/cubes.png'); }
        .contact-banner-inner { position: relative; z-index: 2; display: flex; justify-content: space-around; align-items: center; flex-wrap: wrap; gap: 30px; }
        .cb-item { display: flex; align-items: center; gap: 20px; background: rgba(0,0,0,0.1); padding: 20px 40px; border-radius: 50px; transition: transform 0.3s; }
        .cb-item:hover { transform: translateY(-5px); background: rgba(0,0,0,0.2); }
        .cb-icon { font-size: 2rem; }
        .cb-text span { display: block; font-size: 0.9rem; opacity: 0.9; }
        .cb-text strong { display: block; font-size: 1.4rem; font-weight: 700; }

        .detail-layout { display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px; margin-bottom: 80px; }
        .zoom-container { position: relative; height: 550px; border-radius: 20px; overflow: hidden; border: 1px solid #eee; background: #fff; cursor: crosshair; }
        .zoom-img { width: 100%; height: 100%; object-fit: contain; transform-origin: center; transition: transform 0.1s ease-out; display: block; }
        .zoom-hint { position: absolute; bottom: 20px; right: 20px; background: rgba(255,255,255,0.8); backdrop-filter: blur(4px); padding: 8px 16px; border-radius: 20px; font-size: 0.85rem; color: #666; pointer-events: none; }
        .detail-thumbs { display: flex; gap: 15px; margin-top: 20px; }
        .thumb-item { width: 80px; height: 80px; border-radius: 12px; border: 2px solid transparent; cursor: pointer; padding: 5px; background: white; transition: var(--transition-soft); }
        .thumb-item.active { border-color: var(--color-brand); transform: scale(1.05); }
        .thumb-item img { width: 100%; height: 100%; object-fit: contain; }
        .specs-section { margin-top: 30px; background: #fcfcfc; border-radius: 16px; padding: 30px; border: 1px solid #f0f0f0; }
        .spec-row { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px dashed #e2e8f0; font-size: 0.95rem; }
        .spec-row:last-child { border-bottom: none; }
        .spec-label { color: #718096; font-weight: 500; }
        .spec-val { color: var(--color-dark); font-weight: 600; }

        .contact-advanced { display: grid; grid-template-columns: 1fr 1fr; gap: 0; background: white; border-radius: 24px; overflow: hidden; box-shadow: var(--shadow-lg); margin-bottom: 60px; }
        .contact-sidebar { background: var(--color-dark); color: white; padding: 60px; position: relative; overflow: hidden; }
        .contact-sidebar::before { content: ''; position: absolute; top: -50px; right: -50px; width: 200px; height: 200px; background: var(--color-brand); border-radius: 50%; opacity: 0.2; filter: blur(50px); }
        .contact-map-wrap { position: relative; height: 100%; min-height: 400px; }
        
        .footer { background: #111; color: #a0aec0; padding: 80px 0 30px; margin-top: auto; border-top: 4px solid var(--color-brand); }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 50px; margin-bottom: 50px; }
        .footer-title { color: white; font-size: 1.1rem; font-weight: 700; margin-bottom: 25px; display: inline-block; position: relative; padding-bottom: 10px; }
        .footer-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 40px; height: 3px; background: var(--color-brand); }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a { transition: var(--transition-soft); display: inline-flex; align-items: center; gap: 8px; }
        .footer-links a:hover { color: white; transform: translateX(5px); }
        
        #scrollTop { position: fixed; bottom: 30px; right: 30px; background: var(--color-brand); color: white; width: 50px; height: 50px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; cursor: pointer; opacity: 0; pointer-events: none; transition: var(--transition-soft); box-shadow: var(--shadow-lg); z-index: 99; }
        #scrollTop.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
        #scrollTop:hover { background: var(--color-brand-hover); transform: translateY(-5px); }

        @media (max-width: 1024px) {
            .detail-layout { grid-template-columns: 1fr; }
            .hero-slider { height: 500px; }
            .slide-title { font-size: 2.5rem; }
            .nav-menu, .search-box { display: none; }
            .mobile-toggle { display: block; }
            .contact-advanced { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .categories-wrapper { grid-template-columns: repeat(2, 1fr); }
            .contact-banner-inner { flex-direction: column; align-items: stretch; }
            .cb-item { justify-content: center; }
            
            .header-inner { justify-content: space-between; }
            .logo { position: static; transform: none; left: auto; }
            .header-right { position: static; transform: none; right: auto; }
        }
        @media (max-width: 600px) {
            .footer-grid { grid-template-columns: 1fr; }
            .slogan-card { flex-direction: column; text-align: center; }
            .zoom-container { height: 350px; }
            .categories-wrapper { grid-template-columns: 1fr; }
            .category-card { height: 250px; }
            
            .slider-nav { 
                width: 100%;
                left: 0;
                right: 0;
                top: 90%; 
                transform: translateY(-50%);
                justify-content: space-between;
                padding: 0 20px;
                gap: 0;
                z-index: 50; 
                bottom: auto; 
            }

            .home-slogan-section {
                margin-top: 60px; 
            }
        }

        .modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.8); backdrop-filter: blur(5px); z-index: 2000; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity 0.3s; }
        .modal-overlay.open { opacity: 1; pointer-events: auto; }
        .modal-content { background: white; padding: 40px; border-radius: 20px; width: 90%; max-width: 700px; max-height: 90vh; overflow-y: auto; position: relative; transform: scale(0.95); transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); }
        .modal-overlay.open .modal-content { transform: scale(1); }
        .modal-close { position: absolute; top: 20px; right: 20px; font-size: 1.5rem; color: #a0aec0; background: none; transition: color 0.3s; }
        .modal-close:hover { color: var(--color-brand); }