:root {
            --primary-dark: #1a1a1a;
            --secondary-gray: #4a4a4a;
            --accent-gold: #b8860b;
            --text-dark: #2c2c2c;
        }
        
        body {
            font-family: 'Noto Sans SC', sans-serif;
            color: var(--text-dark);
        }
        
        .font-serif {
            font-family: 'Noto Serif SC', serif;
        }
        
        .gradient-text {
            background: linear-gradient(45deg, var(--accent-gold), #ffd700);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .metal-button {
            background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
            border: 1px solid var(--accent-gold);
            box-shadow: 0 4px 15px rgba(184, 134, 11, 0.3);
            transition: all 0.3s ease;
        }
        
        .metal-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(184, 134, 11, 0.4);
            background: linear-gradient(145deg, #3a3a3a, #2a2a2a);
        }
        
        .card-hover {
            transition: all 0.3s ease;
            border: 1px solid rgba(184, 134, 11, 0.2);
        }
        
        .card-hover:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.1);
            border-color: var(--accent-gold);
        }
        
        .precision-line {
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
        }
        
        .nav-link {
            position: relative;
            transition: color 0.3s ease;
        }
        
        .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 50%;
            background: var(--accent-gold);
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }
        
        .nav-link:hover::after {
            width: 100%;
        }
        
        .scroll-reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.6s ease;
        }
        
        .scroll-reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }
        
        /* Comparison Slider Styles */
        .comparison-slider {
            position: relative;
            width: 100%;
            height: 300px;
            overflow: hidden;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        
        .comparison-before,
        .comparison-after {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
        }
        
        .comparison-after {
            clip-path: polygon(50% 0%, 100% 0%, 100% 100%, 50% 100%);
            transition: clip-path 0.3s ease;
        }
        
        .comparison-slider-handle {
            position: absolute;
            top: 0;
            left: 50%;
            width: 4px;
            height: 100%;
            background: var(--accent-gold);
            cursor: ew-resize;
            z-index: 10;
            transform: translateX(-50%);
        }
        
        .comparison-slider-handle::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 20px;
            height: 20px;
            background: var(--accent-gold);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            box-shadow: 0 2px 10px rgba(184, 134, 11, 0.5);
        }
        
        .comparison-labels {
            position: absolute;
            bottom: 20px;
            left: 0;
            right: 0;
            display: flex;
            justify-content: space-between;
            padding: 0 20px;
            z-index: 5;
        }
        
        .comparison-label {
            background: rgba(0,0,0,0.7);
            color: white;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
        }
        
        /* Equipment Panel Styles */
        .equipment-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        
        .equipment-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        
        .equipment-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 30px rgba(184, 134, 11, 0.2);
        }
        
        .equipment-details {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(26, 26, 26, 0.95);
            color: white;
            padding: 2rem;
            transform: translateY(100%);
            transition: transform 0.3s ease;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        
        .equipment-card:hover .equipment-details {
            transform: translateY(0);
        }
        
        /* Timeline Styles */
        .timeline {
            position: relative;
            padding: 2rem 0;
        }
        
        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--accent-gold);
            transform: translateX(-50%);
        }
        
        .timeline-item {
            position: relative;
            margin-bottom: 3rem;
            cursor: pointer;
        }
        
        .timeline-item:nth-child(odd) .timeline-content {
            margin-right: 50%;
            padding-right: 2rem;
            text-align: right;
        }
        
        .timeline-item:nth-child(even) .timeline-content {
            margin-left: 50%;
            padding-left: 2rem;
            text-align: left;
        }
        
        .timeline-marker {
            position: absolute;
            left: 50%;
            top: 1rem;
            width: 16px;
            height: 16px;
            background: var(--accent-gold);
            border: 4px solid white;
            border-radius: 50%;
            transform: translateX(-50%);
            z-index: 2;
            transition: all 0.3s ease;
        }
        
        .timeline-item:hover .timeline-marker {
            transform: translateX(-50%) scale(1.3);
            box-shadow: 0 0 20px rgba(184, 134, 11, 0.5);
        }
        
        .timeline-content {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
        }
        
        .timeline-item:hover .timeline-content {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(184, 134, 11, 0.2);
        }
        
        .timeline-year {
            font-size: 1.25rem;
            font-weight: bold;
            color: var(--accent-gold);
            margin-bottom: 0.5rem;
        }
        
        @media (max-width: 768px) {
            .timeline::before {
                left: 1rem;
            }
            
            .timeline-marker {
                left: 1rem;
            }
            
            .timeline-item:nth-child(odd) .timeline-content,
            .timeline-item:nth-child(even) .timeline-content {
                margin-left: 3rem;
                margin-right: 0;
                padding-left: 1rem;
                padding-right: 1rem;
                text-align: left;
            }
        }