:root {
            --bg-color: #f5f5f5;
            --card-color: #ffffff;
            --text-color: #333333;
            --header-bg: #4dbcd7;
            --header-text: #ffffff;
            --border-color: #eeeeee;
            --secondary-text: #999999;
            --positive-color: #28a745;
            --negative-color: #dc3545;
            --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }

        .dark-mode {
            --bg-color: #121212;
            --card-color: #1e1e1e;
            --text-color: #e0e0e0;
            --header-bg: #4dbcd7;
            --header-text: #ffffff;
            --border-color: #333333;
            --secondary-text: #aaaaaa;
            --positive-color: #2ecc71;
            --negative-color: #e74c3c;
            --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            transition: background-color 0.3s, color 0.3s;
        }
        
        body {
            background-color: var(--bg-color);
            color: var(--text-color);
            padding: 10px;
            display: flex;
            justify-content: center;
            align-items: flex-start;
            min-height: 100vh;
            margin: 0;
        }
        
        .crypto-container {
            max-width: 1200px;
            margin: 0 auto;
            background-color: var(--card-color);
            border-radius: 12px;
            box-shadow: var(--card-shadow);
            overflow: hidden;
            width: 100%;
        }
        
        .crypto-header {
            background-color: var(--header-bg);
            color: var(--header-text);
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .back-button {
            background: none;
            border: none;
            color: var(--header-text);
            cursor: pointer;
            font-size: 16px;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .crypto-content {
            padding: 25px;
        }
        
        .coin-header {
            display: flex;
            align-items: center;
            margin-bottom: 25px;
            gap: 15px;
            flex-wrap: wrap;
        }
        
        .coin-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, #f7931a, #f2a900);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 24px;
            font-weight: bold;
        }
        .coin-pic {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 24px;
            font-weight: bold;
        }
        
        
        .coin-title-container {
            display: flex;
            flex-direction: column;
        }
        
        .coin-title {
            font-size: 2.2rem;
            font-weight: bold;
        }
        
        .coin-symbol {
            color: var(--secondary-text);
            font-size: 1.4rem;
            font-weight: 500;
        }
        
        .coin-rank {
            margin-left: auto;
            background: linear-gradient(135deg, var(--header-bg), #3a9cb3);
            color: white;
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: bold;
        }
        
        .price-section {
            margin-bottom: 30px;
            padding: 20px;
            background-color: var(--card-color);
            border-radius: 12px;
            box-shadow: var(--card-shadow);
        }
        
        .current-price {
            font-size: 2.8rem;
            font-weight: bold;
            margin-bottom: 5px;
            display: flex;
            align-items: center;
            gap: 15px;
            flex-wrap: wrap;
        }
        
        .price-change {
            font-size: 1.3rem;
            font-weight: bold;
            padding: 6px 12px;
            border-radius: 6px;
            display: inline-block;
        }
        
        .positive {
            color: var(--positive-color);
            background-color: rgba(40, 167, 69, 0.1);
        }
        
        .negative {
            color: var(--negative-color);
            background-color: rgba(220, 53, 69, 0.1);
        }
        
        .price-detail {
            margin-top: 15px;
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        
        .price-highlow {
            display: flex;
            gap: 15px;
        }
        
        .high, .low {
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 0.9rem;
        }
        
        .chart-container {
            height: 400px;
            margin-bottom: 30px;
            position: relative;
            background-color: var(--card-color);
            border-radius: 12px;
            padding: 20px;
            box-shadow: var(--card-shadow);
        }
        
        .time-filters {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .time-filter {
            padding: 8px 16px;
            background-color: var(--card-color);
            color: var(--text-color);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            cursor: pointer;
            font-size: 0.9rem;
            transition: all 0.2s;
        }
        
        .time-filter:hover {
            background-color: rgba(77, 188, 215, 0.1);
        }
        
        .time-filter.active {
            background-color: var(--header-bg);
            color: white;
            border-color: var(--header-bg);
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }
        
        .stat-card {
            background-color: var(--card-color);
            border-radius: 12px;
            padding: 20px;
            box-shadow: var(--card-shadow);
            margin-bottom: 30px;
        }
        
        .stat-title {
            color: var(--secondary-text);
            margin-bottom: 15px;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .stat-value {
            font-size: 1.6rem;
            font-weight: bold;
            margin-bottom: 5px;
        }
        
        .stat-subvalue {
            color: var(--secondary-text);
            font-size: 0.9rem;
        }
        
        .theme-toggle {
            background: none;
            border: none;
            color: var(--header-text);
            cursor: pointer;
            font-size: 16px;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .last-updated {
            margin-top: 20px;
            color: var(--secondary-text);
            font-size: 0.9rem;
            text-align: right;
        }
        
        .loading {
            padding: 20px;
            text-align: center;
            color: var(--secondary-text);
        }
        .related-news {
            background-color: var(--card-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--card-shadow);
        }
        
        .related-news-title {
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 15px;
            color: var(--text-color);
            padding-left: 10px;
            border-left: 4px solid var(--accent-color);
        }
        
        .related-news-list {
            list-style: none;
        }
        
        .related-news-item {
            padding: 12px 0;
            border-bottom: 1px dashed var(--border-color);
            transition: background-color 0.2s;
        }
        
        .related-news-item:hover {
            background-color: rgba(77, 188, 215, 0.05);
        }
        
        .related-news-item:last-child {
            border-bottom: none;
        }
        
        .related-news-link {
            display: block;
            text-decoration: none;
            color: var(--text-color);
            transition: color 0.2s;
        }
        
        .related-news-link:hover {
            color: var(--accent-color);
        }
        
        .related-news-item-title {
            font-size: 16px;
            margin-bottom: 5px;
            line-height: 1.4;
        }
        
        .related-news-item-meta {
            display: flex;
            justify-content: space-between;
            font-size: 12px;
            color: var(--secondary-text);
        }
        .home-button {
            padding: 8px 15px;
            background-color: #32afcd;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            text-decoration: none;
            font-size: 14px;
            transition: background-color 0.3s;
        }

        .home-button:hover {
            background-color: #e0e0e0;
            color: #333;
        }
        .seo-text {
            margin: 30px 0;
            line-height: 1.8;
            color: var(--text-color);
            background-color: var(--card-color);
            border-radius: 12px;
            padding: 20px;
            box-shadow: var(--card-shadow);
        }
        
        .seo-text h2 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--text-color);
        }
        
        .seo-keywords {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 20px 0;
        }
        
        .seo-keyword {
            padding: 5px 10px;
            background-color: rgba(77, 188, 215, 0.1);
            color: var(--header-bg);
            border-radius: 4px;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            
            .time-filters {
                flex-wrap: wrap;
            }
            
            .current-price {
                font-size: 2rem;
            }
            
            .coin-title {
                font-size: 1.8rem;
            }
            
            .chart-container {
                height: 300px;
            }
        }

        .additional-info {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 15px;
            margin-top: 25px;
        }

        .info-item {
            display: flex;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .info-label {
            color: var(--secondary-text);
        }

        .info-value {
            font-weight: 500;
        }