.article-wrapper {
    max-width: 900px;
    margin: 0 auto;
}
.article-header {
    background: white;
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.article-category {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 20px;
}
.article-title {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.4;
    color: #1a1a1a;
    margin: 0 0 20px 0;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    padding-top: 20px;
    border-top: 1px solid #f0f0f0;
}
.article-meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #888;
}
.article-meta-item span {
    font-size: 18px;
}
.article-content-wrapper {
    background: white;
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.article-content {
    line-height: 1.9;
    font-size: 16px;
    color: #333;
}
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 24px 0;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.article-content p {
    margin-bottom: 18px;
}
.article-content h1,
.article-content h2,
.article-content h3 {
    margin: 30px 0 15px;
    font-weight: 700;
    color: #1a1a1a;
}
.article-content h1 {
    font-size: 28px;
}
.article-content h2 {
    font-size: 24px;
}
.article-content h3 {
    font-size: 20px;
}
.article-content ul,
.article-content ol {
    margin: 20px 0;
    padding-left: 24px;
}
.article-content li {
    margin-bottom: 10px 0;
}
.article-content blockquote {
    border-left: 4px solid #667eea;
    padding: 20px 24px;
    background: #f8f9ff;
    border-radius: 0 12px 12px 0;
    margin: 24px 0;
}
.article-footer {
    display: flex;
    justify-content: center;
    align-items: center;
    background: white;
    border-radius: 20px;
    padding: 24px 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.article-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s;
}
.article-back-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}
@media (max-width: 768px) {
    .article-sidebar {
        display: none !important;
    }
    
    .related-keywords-section {
        display: none !important;
    }
    
    .article-header {
        padding: 16px;
        border-radius: 14px;
        margin-bottom: 12px;
    }
    .article-content-wrapper,
    .article-footer {
        padding: 18px;
        border-radius: 14px;
        margin-bottom: 16px;
    }
    .article-title {
        font-size: 22px;
        margin-bottom: 12px;
    }
    .article-category {
        margin-bottom: 12px;
        padding: 5px 12px;
        font-size: 12px;
    }
    .article-meta {
        gap: 16px;
        padding-top: 12px;
    }
    .article-content {
        font-size: 15px;
        line-height: 1.8;
    }
    .article-content img {
        margin: 16px 0;
    }
    .article-content p {
        margin-bottom: 14px;
    }
    .article-content h1,
    .article-content h2,
    .article-content h3 {
        margin: 20px 0 10px;
    }
    .article-content h1 {
        font-size: 24px;
    }
    .article-content h2 {
        font-size: 20px;
    }
    .article-content h3 {
        font-size: 18px;
    }
    .article-content blockquote {
        padding: 14px 16px;
        margin: 16px 0;
    }
    .article-footer {
        flex-direction: column;
        gap: 16px;
        align-items: center;
        padding: 16px 18px;
    }
    .article-back-btn {
        padding: 10px 20px;
    }
}

@media (min-width: 768px) {
    .related-keywords-section {
        background: linear-gradient(135deg, #f8f9ff 0%, #f0f4ff 100%);
        border-radius: 16px;
        padding: 24px;
        margin: 30px 0;
        border: 1px solid #e0e7ff;
    }
    
    .related-keywords-title {
        font-size: 18px;
        font-weight: 700;
        color: #1a1a2e;
        margin-bottom: 16px;
        display: flex;
        align-items: center;
        gap: 8px;
    }
    
    .related-keywords-list {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .related-keyword-tag {
        display: inline-block;
        padding: 8px 18px;
        background: white;
        color: #667eea;
        text-decoration: none;
        border-radius: 20px;
        font-size: 14px;
        font-weight: 500;
        transition: all 0.3s ease;
        border: 1px solid #e0e7ff;
        box-shadow: 0 2px 8px rgba(102, 126, 234, 0.08);
    }
    
    .related-keyword-tag:hover {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        transform: translateY(-2px);
        box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
        border-color: transparent;
    }
    
    .article-wrapper {
        max-width: 1300px;
        margin: 0 auto;
    }
    
    .article-content-with-sidebar {
        display: flex;
        gap: 24px;
        align-items: flex-start;
    }
    
    .article-main-content {
        flex: 1;
        min-width: 0;
    }
    
    .article-sidebar {
        width: 320px;
        flex-shrink: 0;
        display: flex;
        flex-direction: column;
        gap: 16px;
    }
    
    .sidebar-card {
        background: white;
        border-radius: 20px;
        padding: 24px;
        box-shadow: 0 4px 20px rgba(0,0,0,0.08);
        border: 1px solid #f0f0f0;
    }
    
    .sidebar-title {
        font-size: 18px;
        font-weight: 700;
        color: #1a1a2e;
        margin-bottom: 16px;
        padding-bottom: 12px;
        border-bottom: 2px solid #f0f0f0;
    }
    
    .sidebar-exchange-item {
        display: flex;
        gap: 12px;
        align-items: center;
        padding: 12px;
        border-radius: 12px;
        background: #f8f9fa;
        margin-bottom: 10px;
        cursor: pointer;
        transition: all 0.3s;
    }
    
    .sidebar-exchange-item:last-child {
        margin-bottom: 0;
    }
    
    .sidebar-exchange-item:hover {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        transform: translateX(4px);
    }
    
    .sidebar-exchange-item:hover .sidebar-exchange-name,
    .sidebar-exchange-item:hover .sidebar-exchange-desc,
    .sidebar-exchange-item:hover .sidebar-exchange-rating {
        color: white;
    }
    
    .sidebar-exchange-logo {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        background: white;
        padding: 6px;
        flex-shrink: 0;
    }
    
    .sidebar-exchange-info {
        flex: 1;
        min-width: 0;
    }
    
    .sidebar-exchange-name {
        font-size: 14px;
        font-weight: 600;
        color: #1a1a2e;
        margin-bottom: 2px;
        transition: color 0.3s;
    }
    
    .sidebar-exchange-desc {
        font-size: 11px;
        color: #888;
        line-height: 1.4;
        transition: color 0.3s;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    .sidebar-exchange-rating {
        font-size: 14px;
        font-weight: 700;
        color: #10b981;
        flex-shrink: 0;
        transition: color 0.3s;
    }
    
    .sidebar-flash-item {
        padding: 12px;
        border-radius: 10px;
        cursor: pointer;
        transition: all 0.3s;
        margin-bottom: 8px;
        background: #f8f9fa;
    }
    
    .sidebar-flash-item:last-child {
        margin-bottom: 0;
    }
    
    .sidebar-flash-item:hover {
        background: linear-gradient(135deg, #f8f9ff 0%, #f0f4ff 100%);
        transform: translateX(4px);
    }
    
    .sidebar-flash-header {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 6px;
    }
    
    .sidebar-flash-badge {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        padding: 3px 8px;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        font-size: 10px;
        font-weight: 600;
        border-radius: 8px;
        flex-shrink: 0;
    }
    
    .sidebar-flash-title {
        font-size: 13px;
        font-weight: 600;
        color: #1a1a2e;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        line-height: 1.4;
        flex: 1;
        min-width: 0;
    }
    
    .sidebar-flash-item:hover .sidebar-flash-title {
        color: #667eea;
    }
    
    .sidebar-flash-content {
        font-size: 11px;
        color: #888;
        line-height: 1.4;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    
    .sidebar-coin-item {
        display: flex;
        gap: 20px;
        align-items: center;
        padding: 15px;
        border-radius: 12px;
        background: #f8f9fa;
        margin-bottom: 12px;
        cursor: pointer;
        transition: all 0.3s;
    }
    
    .sidebar-coin-item:last-child {
        margin-bottom: 0;
    }
    
    .sidebar-coin-item:hover {
        background: linear-gradient(135deg, #f8f9ff 0%, #f0f4ff 100%);
        transform: translateX(4px);
    }
    
    .sidebar-coin-logo {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: white;
        padding: 4px;
        flex-shrink: 0;
        box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    }
    
    .sidebar-coin-symbol {
        font-size: 14px;
        font-weight: 700;
        color: #1a1a2e;
        transition: color 0.3s;
    }
    
    .sidebar-coin-item:hover .sidebar-coin-symbol {
        color: #667eea;
    }
    
    .sidebar-coin-supply {
        font-size: 12px;
        color: #667eea;
        font-weight: 600;
    }
    
    .sidebar-coin-year {
        font-size: 11px;
        color: #888;
    }
}