/* Base Styles */
        * {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            box-sizing: border-box;
        }
        
        body {
            margin: 0;
            padding: 0;
            line-height: 1.6;
            color: #333;
        }
        
        /* Main Container */
        .ueeshop-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        /* Hero Section */
        .hero-section {
            background: linear-gradient(135deg, #30A0FF 0%, #66B8FF 100%);
            color: white;
            padding: 60px 0;
            text-align: center;
        }
        
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        
        .hero-subtitle {
            font-size: 1.25rem;
            margin-bottom: 30px;
            opacity: 0.9;
        }
        
        /* Featured Videos Section (总) - Optimized Responsive Layout */
        .featured-section {
            padding: 60px 0;
            background: #f8f9fa;
        }
        
        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 40px;
            color: #1a1a1a;
        }
        
        /* Optimized Grid Layout for 2x2 Video Display */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr); /* Desktop: 2 videos per row */
            gap: 30px;
            margin-bottom: 40px;
            align-items: start;
        }
        
        /* Video Card Styles */
        .video-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            width: 100%;
        }
        
        .video-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 30px rgba(48, 160, 255, 0.2);
        }
        
        .video-wrapper {
            position: relative;
            width: 100%;
            height: 0;
            padding-bottom: 56.25%; /* 16:9 aspect ratio */
            overflow: hidden;
        }
        
        .video-wrapper iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border: none;
        }
        
        .video-info {
            padding: 20px;
        }
        
        .video-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: #1a1a1a;
            line-height: 1.4;
        }
        
        .video-link {
            color: #30A0FF;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.9rem;
        }
        
        .video-link:hover {
            text-decoration: underline;
        }
        
        /* CTA Buttons Section */
        .cta-section {
            background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
            padding: 50px 0;
            text-align: center;
            margin: 40px 0;
        }
        
        .cta-title {
            color: white;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 15px;
        }
        
        .cta-subtitle {
            color: #cccccc;
            font-size: 1.1rem;
            margin-bottom: 30px;
        }
        
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        
        .cta-btn {
            display: inline-flex;
            align-items: center;
            padding: 15px 30px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .cta-btn-primary {
            background: linear-gradient(135deg, #30A0FF, #66B8FF);
            color: white;
            box-shadow: 0 4px 20px rgba(48, 160, 255, 0.3);
        }
        
        .cta-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(48, 160, 255, 0.4);
        }
        
        .cta-btn-whatsapp {
            background: linear-gradient(135deg, #25D366, #128C7E);
            color: white;
            box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
        }
        
        .cta-btn-whatsapp:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(37, 211, 102, 0.4);
        }
        
        .cta-btn-secondary {
            background: linear-gradient(135deg, #6c757d, #495057);
            color: white;
            box-shadow: 0 4px 20px rgba(108, 117, 125, 0.3);
        }
        
        .cta-btn-secondary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(108, 117, 125, 0.4);
        }
        
        /* ========== NEW: Region Filter Styles ========== */
        .filter-section {
            padding: 40px 0 20px 0;
            background: white;
            border-bottom: 2px solid #f0f0f0;
        }
        
        .filter-container {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 15px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        
        .filter-btn {
            padding: 12px 28px;
            border: 2px solid #e0e0e0;
            background: white;
            color: #555;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        
        .filter-btn:hover {
            border-color: #30A0FF;
            color: #30A0FF;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(48, 160, 255, 0.2);
        }
        
        .filter-btn.active {
            background: linear-gradient(135deg, #30A0FF, #66B8FF);
            color: white;
            border-color: #30A0FF;
            box-shadow: 0 4px 15px rgba(48, 160, 255, 0.3);
        }
        
        .filter-btn.active:hover {
            background: linear-gradient(135deg, #2890EF, #56A8EF);
        }
        
        /* Gallery Section (分) */
        .gallery-section {
            padding: 60px 0;
            background: white;
        }
        
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
        }
        
        .gallery-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 2px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        
        .gallery-card:hover {
            transform: translateY(-3px);
        }
        
        /* Hidden cards animation */
        .gallery-card.hidden {
            display: none;
        }
        
        .gallery-video-wrapper {
            position: relative;
            width: 100%;
            height: 0;
            padding-bottom: 56.25%;
            overflow: hidden;
        }
        
        .gallery-video-wrapper iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border: none;
        }
        
        .gallery-info {
            padding: 15px;
        }
        
        .gallery-title {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: #1a1a1a;
            line-height: 1.3;
        }
        
        .gallery-link {
            color: #30A0FF;
            text-decoration: none;
            font-size: 0.85rem;
            font-weight: 500;
        }
        
        /* Enhanced Inquiry Section */
        .inquiry-section {
            background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
            padding: 60px 0;
            text-align: center;
            color: white;
            box-shadow: 0 -5px 20px rgba(255, 107, 53, 0.2);
        }
        
        .inquiry-title {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 20px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }
        
        .inquiry-subtitle {
            font-size: 1.2rem;
            margin-bottom: 35px;
            opacity: 0.95;
        }
        
        .inquiry-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 35px;
        }
        
        .inquiry-feature {
            background: rgba(255,255,255,0.1);
            padding: 20px;
            border-radius: 12px;
            backdrop-filter: blur(10px);
        }
        
        .inquiry-feature i {
            font-size: 2rem;
            margin-bottom: 10px;
            display: block;
        }
        
        .inquiry-buttons {
            display: flex;
            justify-content: center;
            gap: 25px;
            flex-wrap: wrap;
        }
        
        .inquiry-btn {
            display: inline-flex;
            align-items: center;
            padding: 18px 35px;
            background: white;
            color: #FF6B35;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        }
        
        .inquiry-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.2);
            background: #f8f9fa;
        }
        
        /* Backend Management Styles */
        .admin-controls {
            display: none;
            background: #f1f3f4;
            padding: 15px;
            border: 1px dashed #ccc;
            margin: 10px 0;
            border-radius: 5px;
        }
        
        .expandable-section {
            opacity: 0.3;
            transition: opacity 0.3s ease;
        }
        
        .expandable-section:hover {
            opacity: 1;
        }
        
        /* Responsive Design - Mobile First Approach */
        
        /* Tablet Portrait */
        @media (max-width: 1024px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr); /* Still 2 columns on tablets */
                gap: 25px;
            }
            
            .filter-btn {
                padding: 10px 22px;
                font-size: 0.9rem;
            }
        }
        
        /* Mobile Landscape */
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
            
            .hero-subtitle {
                font-size: 1.1rem;
            }
            
            .section-title {
                font-size: 2rem;
            }
            
            .featured-grid {
                grid-template-columns: 1fr; /* Mobile: 1 video per row */
                gap: 20px;
            }
            
            .gallery-grid {
                grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            }
            
            .cta-buttons,
            .inquiry-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .cta-btn,
            .inquiry-btn {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
            
            .inquiry-title {
                font-size: 2rem;
            }
            
            .filter-container {
                gap: 10px;
            }
            
            .filter-btn {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
        }
        
        /* Mobile Portrait */
        @media (max-width: 480px) {
            .ueeshop-container {
                padding: 0 10px;
            }
            
            .hero-title {
                font-size: 1.8rem;
            }
            
            .hero-subtitle {
                font-size: 1rem;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .hero-section,
            .featured-section,
            .gallery-section {
                padding: 40px 0;
            }
            
            .cta-section,
            .inquiry-section {
                padding: 40px 0;
            }
            
            .featured-grid {
                grid-template-columns: 1fr; /* Ensure single column on small screens */
                gap: 15px;
            }
            
            .video-info {
                padding: 15px;
            }
            
            .video-title {
                font-size: 1rem;
            }
            
            .filter-section {
                padding: 30px 0 15px 0;
            }
            
            .filter-btn {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
        }
        
        /* Extra Small Screens */
        @media (max-width: 360px) {
            .ueeshop-container {
                padding: 0 8px;
            }
            
            .featured-grid {
                gap: 12px;
            }
            
            .filter-btn {
                padding: 8px 14px;
                font-size: 0.75rem;
            }
        }