.reference-site *{
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: Arial, Helvetica, sans-serif;
        }
.reference-site{
            color: #333;
            line-height: 1.6;
            background-color: #f9f9f9;
        }
.reference-site .container{
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
.reference-site a{
            text-decoration: none;
            color: #2563eb;
        }
.reference-site .section-title{
            text-align: center;
            font-size: 28px;
            margin-bottom: 40px;
            color: #1e293b;
            position: relative;
        }
.reference-site .section-title::after{
            content: "";
            display: block;
            width: 80px;
            height: 3px;
            background-color: #2563eb;
            margin: 10px auto 0;
        }
.reference-site section{
            padding: 60px 0;
        }
.reference-site .quality-control{
            background-color: #fff;
            padding: 80px 0;
        }
.reference-site .quality-header{
            text-align: center;
            margin-bottom: 50px;
        }
.reference-site .quality-header h2{
            font-size: 30px;
            color: #1e293b;
            margin-bottom: 15px;
        }
.reference-site .quality-header p{
            font-size: 16px;
            color: #666;
            max-width: 800px;
            margin: 0 auto;
        }
.reference-site .quality-grid{
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 40px;
            margin-top: 30px;
        }
.reference-site .quality-stage{
            background-color: #f8fafc;
            padding: 35px;
            border-radius: 10px;
            border-left: 4px solid #2563eb;
            transition: all 0.3s ease;
        }
.reference-site .quality-stage:hover{
            box-shadow: 0 12px 24px rgba(0,0,0,0.1);
            transform: translateY(-5px);
        }
.reference-site .quality-stage h3{
            font-size: 20px;
            color: #1e293b;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
        }
.reference-site .quality-stage h3 i{
            color: #2563eb;
            font-size: 24px;
            margin-right: 12px;
        }
.reference-site .quality-stage ul{
            list-style: none;
        }
.reference-site .quality-stage li{
            margin-bottom: 12px;
            color: #475569;
            display: flex;
            align-items: flex-start;
        }
.reference-site .quality-stage li::before{
            content: "✓";
            color: #10b981;
            font-weight: bold;
            margin-right: 10px;
            flex-shrink: 0;
        }
@media  (max-width: 768px) {.reference-site .section-title{
                font-size: 24px;
            }
.reference-site section{
                padding: 40px 0;
            }
.reference-site .quality-control{
                padding: 50px 0;
            }
.reference-site .quality-header h2{
                font-size: 24px;
            }
.reference-site .quality-grid{
                grid-template-columns: 1fr;
                gap: 20px;
            }
.reference-site .quality-stage{
                padding: 25px;
            }}
@media  (max-width: 480px) {.reference-site .quality-stage{
                padding: 20px;
            }}