*{margin:0;padding:0;box-sizing:border-box;font-family:"Microsoft YaHei",sans-serif;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;}
ul{list-style:none;}
/* 内容容器：限制内容最大宽度，居中 */
.content-wrap{
    max-width:1200px;
    margin:0 auto;
    width:100%;
    padding:20px 20px;
}
.banner-inner{
    position:relative;
    z-index:2;
}
.about-banner h1{
    font-size:42px;
    font-weight:600;
    margin-bottom:8px;
}
.about-banner p{
    font-size:18px;
    opacity:0.9;
}
.breadcrumb{
    position:absolute;
    bottom:24px;
    width:100%;
    text-align:right;
    font-size:14px;
    opacity:0.85;
}
.breadcrumb .content-wrap{
    text-align:right;
}
.breadcrumb a:hover{text-decoration:underline;}
/* ========= 公司介绍【板块全屏】 ========= */
.company-intro{
    width:100%;
    padding:20px 0;
}
.intro-row{
    display:flex;
    gap:40px;
    align-items:center;
}
.intro-text{
    flex:1;
}
.intro-text h2{
    font-size:33px;
    color:#222;
    margin-bottom:10px;
    font-family: "Poppins", sans-serif;
    font-weight:700;
    letter-spacing: 1px;
}

.intro-text .sub-title{
    font-size:16px;
    color:rgba(63,63,63,1);
    margin-bottom:24px;
}
.intro-text .desc{
    line-height:1.5;
    color:#444;
    font-size:15px;
    font-family: "Poppins", sans-serif;
    font-weight:400;
}

.intro-img{
    flex:1;
}
.intro-img img{
    width:100%;
    border-radius:8px;
    box-shadow:0 4px 16px rgba(0,0,0,0.08);
}
/* ========= 四大理念卡片【板块全屏】 ========= */
.advantage{
    width:100%;
    padding:0 0 20px;
}
.advantage-grid{
    display:grid;
    grid-template-columns:repeat(4, 1fr);
    gap:24px;
}
.adv-card{
    background:#ffffff;
    border:1px solid #e6f0fb;
    border-radius:10px;
    padding:32px 20px;
    text-align:center;
    transition:all 0.3s ease;
}
.adv-card:hover{
    transform:translateY(-6px);
    box-shadow:0 8px 22px rgba(0,88,187,0.12);
}
.adv-icon{
    width:60px;
    height:60px;
    margin:0 auto 16px;
    background:linear-gradient(135deg,#0060cc,#0099ee);
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    font-size:26px;
}
.adv-card h4{
    font-size:18px;
    color:#222;
    margin-bottom:6px;
}
.adv-card span{
    font-size:13px;
    color:#777;
}
/* ========= 企业文化大图板块 ========= */
.culture{
    width:100%;
    padding:20px 0;
    background:#f8fafc;
}
.culture-section-title{
    text-align:center;
    margin-bottom:40px;
}
.culture-section-title h2{
    font-size:28px;
    color:#222;
    margin-bottom:6px;
}
.culture-section-title p{
    color:#666;
    font-size:14px;
}
/* 原图比例容器 2113 : 960 */
.culture-box{
    position:relative;
    width:100%;
    height:0;
    padding-bottom:45.43%;
    overflow:hidden;
}
.culture-box img{
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    object-fit:cover;
    object-position:center;
    display:block;
}
/* 文字定位样式（参考图效果：半透大数字底纹，同行文字） */
.culture-text-item{
    position:absolute;
    display:flex;
    align-items:center;
    gap:14px;
    color:#fff;
    white-space:nowrap;
}
.culture-text-item .num{
    font-size:clamp(80px,11vw,140px);
    font-weight:700;
    line-height:1;
    color:#ffffff;
    opacity:0.25;
    letter-spacing:2px;
}
.culture-text-item .text{
    font-size:clamp(20px,2.4vw,32px);
    font-weight:600;
    line-height:1.1;
    color:#ffffff;
    padding-bottom:6px;
}
.item01{
    top:6%;
    left:4%;
}
.item02{
    top:6%;
    right:4%;
}
.item03{
    bottom:6%;
    left:4%;
}
.item04{
    bottom:6%;
    right:4%;
}
/* ========= 荣誉资质 证书轮播 ========= */
.certificate{
    width:100%;
    padding:20px 0;
}
.section-title{
    text-align:center;
    margin-bottom:40px;
}
.section-title h2{
    font-size:28px;
    color:#222;
    margin-bottom:6px;
}
.section-title p{
    color:#666;
    font-size:14px;
}
.cert-wrap-box{
    position:relative;
    padding:0 20px;
}
.cert-arrows{
   display:flex;
    justify-content:flex-end;
    align-items:center;
    gap:20px;
    margin-bottom:20px;
}

.cert-arrow{
    width:40px;
    height:40px;
    border-radius:50%;
    border:1px solid #0060cc;
    background:#fff;
    color:#0060cc;
    font-size:20px;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:center;
    transition:0.3s;
}
.cert-arrow:hover{
    background:#0060cc;
    color:#fff;
}
.cert-container{
    overflow:hidden;
}
.cert-track{
    display:flex;
    gap:24px;
    transition:transform 0.4s ease;
}
.cert-item{
    min-width:calc(25% - 18px);
    background:#fff;
    border-radius:8px;
    overflow:hidden;
    box-shadow:0 2px 12px rgba(0,0,0,0.06);
}
.cert-item img{
    width:100%;
    cursor:pointer;
}
.cert-item p{
    text-align:center;
    padding:14px;
    color:#444;
    font-size:16px;
}
/* =====图片弹窗样式===== */
.img-popup{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,0.85);
    z-index:9999;
    display:none;
    align-items:center;
    justify-content:center;
    padding:20px;
}
.img-popup.show{
    display:flex;
}
.popup-inner{
    position:relative;
    max-width:90%;
    max-height:90%;
}
.popup-inner img{
    max-width:100%;
    max-height:90vh;
    border:4px solid #fff;
    border-radius:4px;
}
.popup-close{
    position:absolute;
    top:-14px;
    right:-14px;
    width:42px;
    height:42px;
    background:#fff;
    color:#333;
    font-size:26px;
    text-align:center;
    line-height:42px;
    border-radius:50%;
    cursor:pointer;
    font-weight:bold;
}
.popup-close:hover{
    background:#0060cc;
    color:#fff;
}
/* ========= 响应式：手机端 ========= */
@media (max-width: 768px){
    .about-banner{height:240px;}
    .about-banner h1{font-size:28px;}

    .intro-row{
        flex-direction:column;
    }
    .advantage-grid{
        grid-template-columns:repeat(2, 1fr);
        gap:16px;
    }
    .adv-card{
        padding:24px 16px;
    }
    .adv-icon{
        width:52px;
        height:52px;
        font-size:22px;
    }
    .adv-card h4{
        font-size:16px;
    }
    .adv-card span{
        font-size:12px;
    }

    .culture-section-title h2{
        font-size:22px;
    }
    .culture-section-title p{
        font-size:13px;
    }
    .culture-section-title{
        margin-bottom:24px;
    }
    /* 手机缩小间距防止文字溢出 */
    .culture-text-item{
        gap:8px;
    }

    .cert-wrap-box{
        padding:0 20px;
    }
    .cert-arrows{
        right:20px;
    }
    .cert-item{
        min-width:calc(50% - 12px);
    }
    .company-intro,
    .advantage,
    .culture,
    .certificate{
        padding:40px 0;
    }
    .popup-close{
        top:-10px;
        right:-10px;
        width:36px;
        height:36px;
        line-height:36px;
        font-size:22px;
    }
}