.topbanner{width: 100%;}
  .topbanner img{
      width: 100%;
      height:68px;
      object-fit: cover;
  }
@media (max-width: 768px) {
    .topbanner img{
          height:38px; 
      }
}
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
        }
        
        .container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 20px;
            margin-top:130px;
        }
        
        .top {
            text-align: center;
            margin-bottom: 40px;
            padding: 30px 20px;
            background: linear-gradient(135deg, #5b6ef7 0%, #3a46d4 100%);
            color: white;
            border-radius: 12px;
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
            position: relative;
            overflow: hidden;
        }
        
        .top::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            opacity: 0.2;
        }
        
        .top h1 {
            font-size: 2.5rem;
            margin-bottom: 10px;
            position: relative;
        }
        
        .description {
            font-size: 1.1rem;
            opacity: 0.9;
            position: relative;
        }
        
        .filters {
            display: flex;
            justify-content: center;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .filter-btn {
            padding: 10px 20px;
            background: white;
            border: none;
            border-radius: 25px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }
        
        .filter-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        

        .timeline {
            position: relative;
            padding-left: 40px;
        }
        
        .timeline::before {
            content: '';
            position: absolute;
            left: 13px;
            top: 0;
            height: 100%;
            width: 4px;
            background: #e0e7ff;
            border-radius: 2px;
        }
        
        .update-card {
            background: white;
            border-radius: 12px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            position: relative;
            transition: all 0.3s ease;
        }
        
        .update-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        
        .update-card::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 30px;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: #3a46d4;
            border: 4px solid #f5f7fa;
            box-shadow: 0 0 0 3px rgba(58, 70, 212, 0.2);
            transition: all 0.3s ease;
        }
        
        .update-card:hover::before {
            transform: scale(1.2);
            box-shadow: 0 0 0 5px rgba(58, 70, 212, 0.2);
        }
        
        .version {
            font-size: 1.4rem;
            font-weight: 700;
            color: #3a46d4;
            margin-bottom: 5px;
            display: flex;
            align-items: center;
        }
        
        .version::after {
            content: '';
            flex-grow: 1;
            height: 1px;
            background: #eee;
            margin-left: 15px;
            max-width: 200px;
        }
        
        .date {
            font-size: 0.9rem;
            color: #777;
            margin-bottom: 20px;
            display: inline-block;
            padding: 3px 10px;
            background: #f5f7fa;
            border-radius: 12px;
        }
        
        .update-sections {
            margin-bottom: 20px;
        }
        
        .section-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 15px 0 10px;
            display: flex;
            align-items: center;
        }
        
        .section-title::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 8px;
        }
        
        .section-new .section-title::before {
            background: #1890ff;
        }
        
        .section-update .section-title::before {
            background: #fa8c16;
        }
        
        .section-fix .section-title::before {
            background: #52c41a;
        }
        
        .section-new .section-title {
            color: #1890ff;
        }
        
        .section-update .section-title {
            color: #fa8c16;
        }
        
        .section-fix .section-title {
            color: #52c41a;
        }
        
        .update-list {
            padding-left: 18px;
        }
        
        .update-item {
            margin-bottom: 8px;
            position: relative;
            padding-left: 15px;
        }
        
        .update-item::before {
            content: '•';
            position: absolute;
            left: 0;
            color: inherit;
            opacity: 0.7;
        }
        
        .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px dashed #eee;
        }
        
        .tag {
            padding: 4px 10px;
            border-radius: 15px;
            font-size: 0.8rem;
            font-weight: 600;
            transition: all 0.2s ease;
        }
        
        .tag:hover {
            transform: scale(1.05);
        }
        
        .tag-new {
            background: #e6f7ff;
            color: #1890ff;
        }
        
        .tag-fix {
            background: #f6ffed;
            color: #52c41a;
        }
        
        .tag-update {
            background: #fff7e6;
            color: #fa8c16;
        }
        
        .tag-feature {
            background: #f9f0ff;
            color: #722ed1;
        }

        @media (max-width: 768px) {
            .timeline {
                padding-left: 30px;
            }
            
            .update-card::before {
                left: -26px;
            }
            
            .version {
                font-size: 1.2rem;
            }
            
            h1 {
                font-size: 2rem;
            }
        }