/* A1 production typography: substantial strokes, comfortable spacing, no web-font download. */
body.a1{font-family:"Microsoft YaHei UI","Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;font-weight:600;font-size:15px;-webkit-font-smoothing:auto;color:#20374a}
.a1 h1,.a1 h2,.a1 h3{font-weight:700;letter-spacing:0}
.a1 h1{font-size:38px;line-height:1.6}.a1 h2{font-size:31px;line-height:1.5}
.a1 .eyebrow{font-weight:700;font-size:11px;color:#597b94;letter-spacing:2px}
.a1 .about-body>p{font-size:15px;line-height:2.1;font-weight:600;color:#4c6273}
.a1 .stats strong{font-weight:700;font-size:44px;letter-spacing:0}.a1 .stats i,.a1 .stats span{font-weight:600;font-size:13px}
.a1 .text-link{font-size:13px;font-weight:700}.a1 .product-info h3{font-size:20px;font-weight:700;line-height:1.5}
.a1 .product-info p,.a1 .case-copy p,.a1 .section-desc{font-size:13px;font-weight:600;color:#526c7d;line-height:1.85}
.a1 .product-number{font-weight:700}.a1 .case-copy h3{font-size:22px;font-weight:700}
.a1 .news-copy h3{font-size:19px;font-weight:700;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:3.5em}
.a1 .news-copy>p{font-size:13px;color:#526c7d;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:3.7em}
.a1 .news-tag,.a1 .read-more{font-size:12px;font-weight:600}.a1 .services h2{font-size:24px}.a1 .service-links a{font-size:14px;font-weight:700}
.a1 .site-header{background:#fff}.a1 .header-inner{gap:25px}.a1 .site-header nav{gap:23px;font-size:14px;font-weight:700}
.a1 .logo img{width:110px;height:auto}.header-tools{display:flex;align-items:center;gap:15px;padding-left:22px;border-left:1px solid #dce7ef;color:#075eac}
.header-tools a{font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;min-width:22px;min-height:32px}
.header-tools svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8}
.a1 .footer-brand>p,.a1 .footer-links h3{font-size:14px;font-weight:700}.a1 .footer-brand>span,.a1 .footer-links a,.a1 .footer-contact>span,.a1 .footer-contact p{font-size:12px;font-weight:600;color:#e1eef9}
.a1 .phone{font-size:30px;font-weight:700}.a1 .footer-bottom{font-size:11px;color:#d4e5f3}.a1 .footer-contact{position:relative;padding-right:92px}
.footer-qrcode{position:absolute;right:0;top:45px;background:white;padding:4px;width:76px;height:76px;object-fit:contain}
.a1 .footer-main{grid-template-columns:1fr .8fr 1.55fr;gap:40px}.a1 .footer-contact p{column-gap:14px;row-gap:0}
.skip-link{position:fixed;left:20px;top:-70px;background:#075eac;color:#fff;padding:12px 20px;z-index:80}.skip-link:focus{top:12px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.a1 .hero-image{position:relative;isolation:isolate;height:auto;aspect-ratio:12/5;min-height:410px;max-height:800px}.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity .65s ease;pointer-events:none}
.hero-slide.is-active{opacity:1;pointer-events:auto;z-index:1}.hero-slide>a,.hero-slide picture{display:block;width:100%;height:100%}
.hero-slide[data-slide=company] img{object-position:center 47%}.hero-slide[data-slide=underground] img{object-position:center 67%}
.hero-slide[data-slide=smart] img,.hero-slide[data-slide=grease] img{object-position:center 66%}.hero-slide[data-slide=sewage] img,.hero-slide[data-slide=water] img{object-position:center 65%}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:42px;height:52px;border:1px solid #ffffff90;background:#ffffffdc;color:#075eac;cursor:pointer;font:600 32px/1 Arial}
.hero-prev{left:20px}.hero-next{right:20px}.hero-arrow:hover{background:#fff}.hero-caption{z-index:4;font-weight:700}.hero-caption>div{display:flex;align-items:center;gap:25px}
.hero-caption>div>a{display:flex;align-items:center;gap:25px}.hero-pause{font-family:inherit;font-weight:600;font-size:11px;color:#597e98;background:none;border:0;padding:10px 8px;cursor:pointer}
@media(min-width:1650px){.a1 .site-header nav{font-size:15px;gap:24px}}
@media(max-width:1199px){.a1 .header-inner{gap:20px}.a1 .site-header nav{gap:16px;font-size:12px}.header-tools{gap:11px;padding-left:16px}.a1 .footer-main{gap:27px;grid-template-columns:.8fr .7fr 1.6fr}.a1 .product-info h3{font-size:18px}}
@media(max-width:1050px){.a1 .site-header nav{display:none;position:absolute;top:81px;left:0;right:0;background:#fff;height:auto;padding:15px 28px 24px;box-shadow:0 14px 18px #1d466a12;gap:0}.a1 .site-header.menu-open nav{display:grid;grid-template-columns:repeat(3,1fr)}.a1 .site-header nav a{padding:12px 4px;font-size:14px}.a1 .site-header nav a.current:after{display:none}.a1 .menu-toggle{display:block}.a1 .header-inner{height:82px}.a1 .footer-main{grid-template-columns:1fr 1.5fr}.a1 .footer-links{display:none}}
@media(max-width:767px){.a1 .header-inner{height:66px;gap:12px}.a1 .logo img{width:95px}.header-tools{border:0;padding:0;gap:10px}.header-tools a{min-height:34px}.a1 .site-header nav{top:65px;padding:12px 20px 23px}.a1 .site-header.menu-open nav{grid-template-columns:1fr 1fr}.a1 h1,.a1 .about-a1 h1{font-size:28px;line-height:1.6}.a1 .section-heading h2{font-size:24px;line-height:1.6}.a1 .about-body>p{font-size:14px;line-height:2}.a1 .stats strong{font-size:32px}.a1 .stats i,.a1 .stats span{font-size:11px}.a1 .product-info h3{font-size:16px}.a1 .product-info p{font-size:11px}.a1 .product-info{padding:16px 12px}.a1 .product-info .arrow{display:none}.a1 .case-copy h3{font-size:21px}.a1 .news-copy h3{font-size:18px;min-height:0}.a1 .news-copy>p{font-size:13px}.a1 .services h2{font-size:22px}.a1 .service-links a{font-size:13px}.hero-arrow{width:30px;height:44px;font-size:27px}.hero-prev{left:10px}.hero-next{right:10px}.hero-slide img{object-position:center 50%!important}.hero-caption>div{gap:10px}.hero-caption>div>a{gap:10px}.hero-pause{font-size:9px;padding:8px 0}.a1 .hero-caption{font-size:9px}.a1 .footer-main{display:block}.a1 .footer-contact{padding-right:88px}.a1 .phone{font-size:26px}.a1 .footer-contact p{font-size:11px}.a1 .footer-bottom{font-size:10px;line-height:1.8}}
@media(max-width:767px){.a1 .hero-image{height:385px;min-height:0;aspect-ratio:auto}}
@media(prefers-reduced-motion:reduce){.hero-slide{transition:none}}