@charset "utf-8";
/* ============================================================
   masdtjx.css - 仿 masdtjx.com 样式 (XunRui CMS PC default theme)
   主色 #e62727  深蓝 #000d3c  灰底 #f2f2f2
   ============================================================ */
:root{
    --m-red:#e62727;
    --m-navy:#000d3c;
    --m-gray:#f2f2f2;
    --m-dark:#222;
    --m-mute:#666;
    --m-maxw:1200px;
}
*{box-sizing:border-box}
body{font-family:"Roboto","Montserrat","Microsoft YaHei",sans-serif;color:var(--m-dark);margin:0;background:#fff;font-size:16px;line-height:1.7}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s,opacity .2s}
a:hover{color:var(--m-red)}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;font-family:"Montserrat","Roboto",sans-serif}
ul{margin:0;padding:0;list-style:none}
.m-wrap{max-width:var(--m-maxw);margin:0 auto;padding:0 20px}
.m-sec{padding:70px 0}
.m-sec-title{text-align:center;font-size:30px;margin-bottom:18px;color:var(--m-dark);text-transform:uppercase;letter-spacing:.5px}
.m-sec-title small{display:block;font-size:15px;font-weight:400;color:var(--m-mute);margin-top:6px;text-transform:none}

/* ===== Top bar ===== */
.m-topbar{background:#1a1a1a;color:#ddd;font-size:13px}
.m-topbar .m-wrap{display:flex;align-items:center;justify-content:space-between;min-height:40px}
.m-topbar .m-contact{display:flex;gap:26px;flex-wrap:wrap}
.m-topbar .m-contact li{display:flex;align-items:center;gap:7px}
.m-topbar .m-contact svg{width:15px;height:15px;fill:var(--m-red)}
.m-topbar .m-social{display:flex;gap:14px}
.m-topbar .m-social a{display:flex;width:26px;height:26px;align-items:center;justify-content:center;border-radius:50%;background:#333}
.m-topbar .m-social svg{width:14px;height:14px;fill:#ddd}
.m-topbar .m-social a:hover{background:var(--m-red)}
.m-topbar .m-social a:hover svg{fill:#fff}

/* ===== Header / Nav ===== */
.m-header{position:sticky;top:0;z-index:999;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.06);transition:box-shadow .25s}
.m-header.scrolled{box-shadow:0 6px 18px rgba(0,0,0,.12)}
.m-header .m-wrap{display:flex;align-items:center;justify-content:space-between;min-height:84px;gap:24px}
.m-logo img{height:64px;width:auto}
.m-nav{display:flex;align-items:center;gap:4px}
.m-nav>li{position:relative}
.m-nav>li>a{display:block;padding:28px 16px;font-weight:600;font-size:15px;text-transform:uppercase;position:relative}
.m-nav>li>a::after{content:"";position:absolute;left:16px;right:16px;bottom:18px;height:2px;background:var(--m-red);transform:scaleX(0);transform-origin:center;transition:transform .25s}
.m-nav>li.active>a,.m-nav>li>a:hover{color:var(--m-red)}
.m-nav>li.active>a::after,.m-nav>li>a:hover::after{transform:scaleX(1)}
.m-nav .sub{position:absolute;top:100%;left:0;min-width:230px;background:#fff;box-shadow:0 10px 26px rgba(0,0,0,.12);opacity:0;visibility:hidden;transform:translateY(8px);transition:.25s;padding:8px 0}
.m-nav>li:hover .sub{opacity:1;visibility:visible;transform:none}
.m-nav .sub a{display:block;padding:10px 18px;font-size:14px;color:#444;border-bottom:1px solid #f3f3f3}
.m-nav .sub a:hover{color:var(--m-red);background:#fafafa}
.m-head-tools{display:flex;align-items:center;gap:16px}
.m-search-btn{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border:none;background:transparent;cursor:pointer}
.m-search-btn svg{width:20px;height:20px;fill:var(--m-dark)}
.m-btn-dl{display:inline-block;padding:10px 24px;background:var(--m-red);color:#fff;font-weight:700;font-size:14px;text-transform:uppercase;letter-spacing:.5px;transition:opacity .2s}
.m-btn-dl:hover{opacity:.88;color:#fff}
/* 汉堡按钮：品牌红底 + 白色三条，不依赖 CSS 变量，避免白底白线融进白色 header */
.m-burger{display:none;width:42px;height:42px;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0;border:none;border-radius:6px;background:var(--m-red,#e62727);cursor:pointer;-webkit-tap-highlight-color:transparent}
.m-burger span{display:block;width:22px;height:2px;background:#fff;border-radius:2px}
.m-burger:hover{opacity:.88}
.m-burger:active{transform:scale(.94)}
.m-search-full{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:1000;display:none;align-items:center;justify-content:center}
.m-search-full.open{display:flex}
.m-search-full form{width:min(620px,90%);display:flex}
.m-search-full input{flex:1;padding:16px 18px;border:none;font-size:18px;outline:none}
.m-search-full button{width:60px;border:none;background:var(--m-red);cursor:pointer}
.m-search-full button svg{width:22px;height:22px;fill:#fff;margin:auto}
.m-search-close{position:absolute;top:24px;right:28px;color:#fff;font-size:30px;cursor:pointer;background:none;border:none}

/* ===== Hero ===== */
.m-hero{background:linear-gradient(135deg,#fafafa,#fff)}
.m-hero .m-wrap{display:flex;align-items:center;gap:50px;padding-top:60px;padding-bottom:60px;min-height:560px}
.m-hero .m-hero-text{flex:1 1 50%}
.m-hero .m-hero-text h2{font-size:22px;color:var(--m-navy);margin-bottom:8px}
.m-hero .m-hero-text h1{font-size:52px;color:var(--m-dark);margin-bottom:22px;line-height:1.1}
.m-hero .m-hero-text p{font-size:17px;color:#555;margin-bottom:28px;font-weight:500}
.m-hero-btns{display:flex;gap:18px;flex-wrap:wrap}
.m-btn{display:inline-block;padding:13px 30px;font-weight:700;font-size:14px;text-transform:uppercase;letter-spacing:.5px;border:2px solid var(--m-red);transition:.25s}
.m-btn-fill{background:var(--m-red);color:#fff}
.m-btn-fill:hover{background:#c81e1e;color:#fff;border-color:#c81e1e}
.m-btn-line{color:var(--m-red)}
.m-btn-line:hover{background:var(--m-red);color:#fff}
.m-hero .m-hero-img{flex:1 1 45%;animation:m-slideR .9s ease}
.m-hero .m-hero-img img{width:100%;border-radius:6px;box-shadow:0 18px 40px rgba(0,0,0,.18)}
@keyframes m-slideR{from{opacity:0;transform:translateX(40px)}to{opacity:1;transform:none}}

/* ===== our strength (ysd) ===== */
.ysd-section{display:flex;flex-wrap:wrap;background:#fff}
.ysd-left{background:var(--m-red);color:#fff;padding:46px 40px;flex:1 1 50%;box-sizing:border-box}
.ysd-left h3{font-size:22px;margin-bottom:10px;font-weight:600}
.ysd-left h2{font-size:38px;margin:18px 0;text-transform:uppercase}
.ysd-left p{font-size:16px;line-height:1.7;opacity:.95}
.ysd-btn{margin-top:24px;display:inline-block;background:#fff;color:var(--m-red);padding:11px 26px;font-weight:700;border-radius:4px;text-transform:uppercase;font-size:14px}
.ysd-btn:hover{background:#000d3c;color:#fff}
.ysd-right{flex:1 1 50%;display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--m-gray)}
.ysd-box{background:#fff;padding:34px 22px}
.ysd-box h4{font-size:30px;color:var(--m-navy);margin-bottom:12px}
.ysd-box p{font-size:14px;color:#333}

/* ===== Product intro split ===== */
.m-split{display:flex;flex-wrap:wrap;gap:40px;align-items:center}
.m-split .col{flex:1 1 48%}
.m-split .col img{width:100%;border-radius:6px}
.m-split h2{font-size:30px;margin-bottom:14px;color:var(--m-dark)}
.m-divider{width:70px;height:3px;background:var(--m-red);margin-bottom:18px}
.m-split p{font-size:15px;color:#555}

/* ===== Showcase grid (4 imgs) ===== */
.m-grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.m-grid4 img{width:100%;height:100%;object-fit:cover;border-radius:4px}

/* ===== Carousel (Swiper) ===== */
.m-carousel-sec .m-sec-title{margin-bottom:30px}
.m-carousel{overflow:hidden;position:relative}
.m-carousel .swiper-slide img{width:100%;border-radius:4px;cursor:pointer;object-fit:cover}
.m-carousel .swiper-button-next,.m-carousel .swiper-button-prev{color:var(--m-red)}
.swiper-button-next:after,.swiper-button-prev:after{font-size:22px!important}

/* ===== Certificates ===== */
.m-cert-head{display:flex;align-items:center;justify-content:center;gap:20px;margin-bottom:30px}
.m-cert-head img{height:46px;width:auto}
.m-cert-head h2{font-size:28px;color:var(--m-dark)}
.m-cert-carousel .swiper-slide{width:260px}
.m-cert-carousel .swiper-slide img{width:100%;border:1px solid #eee;border-radius:4px}

/* ===== Cases (CTA cover cards) ===== */
.m-cases{display:grid;grid-template-columns:1.4fr 1fr 1fr;grid-template-rows:auto auto;gap:14px}
.m-case{position:relative;min-height:230px;border-radius:6px;overflow:hidden;background-size:cover;background-position:center;display:flex;align-items:flex-end}
.m-case:first-child{grid-row:1/3}
.m-case::before{content:"";position:absolute;inset:0;background:linear-gradient(transparent 30%,rgba(0,0,0,.78))}
.m-case .m-case-txt{position:relative;z-index:2;padding:22px;color:#fff;font-size:15px;font-weight:500}
.m-case:hover .m-case-txt{transform:translateY(-4px);transition:.3s}

/* ===== Request a quote + FAQ ===== */
.m-quote-faq{display:flex;gap:50px;align-items:flex-start}
.m-quote{flex:1 1 44%;background:var(--m-gray);padding:40px;border-radius:6px}
.m-quote h2{font-size:30px;margin-bottom:6px}
.m-quote>p{color:#555;margin-bottom:24px}
.m-quote .m-field{margin-bottom:14px}
.m-quote input,.m-quote textarea{width:100%;padding:12px 14px;border:1px solid #ddd;border-radius:4px;font-size:14px;font-family:inherit;background:#fff}
.m-quote textarea{resize:vertical;min-height:110px}
.m-quote .m-btn{margin-top:6px;width:100%;text-align:center}
.m-faq{flex:1 1 52%}
.m-faq h4{font-size:16px;color:var(--m-mute);font-weight:600;text-transform:uppercase;letter-spacing:1px}
.m-faq h2{font-size:34px;margin:6px 0 26px}
.m-acc-item{border:1px solid #e6e6e6;border-radius:4px;margin-bottom:12px;overflow:hidden}
.m-acc-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;cursor:pointer;background:#fff;font-weight:600;font-size:15px}
.m-acc-head .ico{font-size:20px;color:var(--m-red);line-height:1}
.m-acc-body{display:none;padding:0 20px 18px;color:#555;font-size:14px;line-height:1.8}
.m-acc-item.open .m-acc-body{display:block}
.m-acc-item.open .ico{content:'–'}

/* ===== Breadcrumb / inner pages ===== */
.m-crumb{background:var(--m-gray);padding:14px 0;font-size:13px;color:#888}
.m-crumb a{color:#888}
.m-crumb a:hover{color:var(--m-red)}
.m-crumb .sep{margin:0 8px;color:#bbb}
.m-page{max-width:980px;margin:40px auto;padding:0 20px}
.m-page h1{font-size:30px;margin-bottom:20px}
.m-page .neirong{font-size:16px;color:#444;line-height:1.9}
.m-page .neirong img{margin:18px 0;border-radius:4px}
.m-inner-sec{padding:40px 0}

/* ===== Product list ===== */
.m-prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.m-prod-card{background:#fff;border:1px solid #eee;border-radius:6px;overflow:hidden;transition:transform .25s,box-shadow .25s}
.m-prod-card:hover{transform:translateY(-6px);box-shadow:0 14px 30px rgba(0,0,0,.12)}
.m-prod-card .thumb{overflow:hidden;aspect-ratio:4/3;background:#f5f5f5}
.m-prod-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.m-prod-card:hover .thumb img{transform:scale(1.06)}
.m-prod-card .info{padding:16px}
.m-prod-card .info h3{font-size:16px;margin-bottom:6px}
.m-prod-card .info p{font-size:13px;color:#888}
.m-pagination{display:flex;justify-content:center;gap:6px;margin-top:36px;flex-wrap:wrap;list-style:none;padding:0}
.m-pagination a,.m-pagination span{display:inline-block;padding:8px 14px;border:1px solid #e2e2e2;border-radius:4px;font-size:14px;color:#555;text-decoration:none;transition:.2s}
.m-pagination a:hover{border-color:var(--m-red);color:var(--m-red)}
.m-pagination ul{list-style:none;padding:0;margin:0;display:flex;gap:6px;flex-wrap:wrap}
.m-pagination li{list-style:none}
.m-pagination .active,.m-pagination .current{background:var(--m-red)!important;color:#fff!important;border-color:var(--m-red)!important}
.m-pagination .pageinfo{border:none;color:#999}

/* ===== Product detail ===== */
.m-detail{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin:40px 0}
.m-detail .d-img img{width:100%;border-radius:6px;border:1px solid #eee}
.m-detail .d-info h1{font-size:26px;margin-bottom:14px}
.m-detail .d-info .meta{color:#999;font-size:13px;margin-bottom:18px;display:flex;gap:20px}
.m-detail .d-info .meta i{margin-right:4px}
.m-detail .d-info .neirong{color:#444;font-size:15px;line-height:1.9}
.m-prevnext{display:flex;justify-content:space-between;gap:20px;margin-top:30px;padding-top:20px;border-top:1px solid #eee;color:#888;font-size:14px}
.m-related{margin-top:40px}
.m-related h3{font-size:20px;margin-bottom:20px}
.m-rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.m-rel-item a img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:4px}
.m-rel-item h4{font-size:14px;margin-top:8px;font-weight:600}
.m-tag{display:inline-block;padding:4px 12px;margin:2px;border:1px solid #e2e2e2;border-radius:4px;font-size:13px;color:#666}
.m-tag:hover{background:var(--m-red);color:#fff;border-color:var(--m-red)}
.m-tag.on{background:var(--m-red);color:#fff;border-color:var(--m-red)}

/* ===== Search page ===== */
.m-search-bar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.m-search-form{display:flex;gap:0}
.m-search-form input{flex:1;min-width:200px;padding:10px 16px;border:1px solid #ddd;border-right:none;border-radius:4px 0 0 4px;font-size:14px;outline:none}
.m-search-form input:focus{border-color:var(--m-red)}
.m-search-form button{padding:10px 24px;background:var(--m-red);color:#fff;border:none;border-radius:0 4px 4px 0;font-size:14px;cursor:pointer}
.m-search-form button:hover{opacity:.9}
.m-search-sum{color:#888;font-size:14px}
.m-search-sum b{color:var(--m-red);font-size:18px}
.m-filter{background:#f9f9f9;border-radius:6px;padding:16px 20px;margin-bottom:24px}
.m-filter-row{display:flex;align-items:flex-start;gap:12px;padding:6px 0}
.m-filter-label{font-weight:600;color:#555;min-width:60px;font-size:14px;padding-top:4px}
.m-filter-list{display:flex;flex-wrap:wrap;gap:4px}
.m-filter-list .m-tag{text-decoration:none}
.m-search-grid{display:grid;grid-template-columns:1fr 280px;gap:30px}
.m-sr-item{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid #eee}
.m-sr-thumb{flex-shrink:0;width:160px;height:100px;overflow:hidden;border-radius:4px}
.m-sr-thumb img{width:100%;height:100%;object-fit:cover}
.m-sr-body h3{font-size:16px;margin-bottom:6px}
.m-sr-body h3 a{color:var(--m-dark)}
.m-sr-body h3 a:hover{color:var(--m-red)}
.m-sr-body p{color:#777;font-size:13px;line-height:1.6;margin-bottom:6px}
.m-sr-meta{display:flex;gap:16px;color:#aaa;font-size:12px}
.m-empty{text-align:center;padding:60px 20px;color:#999;font-size:15px}
.m-search-side .m-side-box{background:#f9f9f9;border-radius:6px;padding:20px}
.m-side-box h3{font-size:16px;margin-bottom:14px;color:var(--m-dark)}
.m-side-item{display:flex;align-items:center;gap:10px;padding:8px 0}
.m-side-item img{width:50px;height:36px;object-fit:cover;border-radius:3px;flex-shrink:0}
.m-side-item span{font-size:13px;color:#555;line-height:1.4}
.m-side-item:hover span{color:var(--m-red)}
@media(max-width:768px){
    .m-search-grid{grid-template-columns:1fr}
    .m-sr-thumb{width:100px;height:70px}
    .m-search-side{display:none}
}

/* ===== News detail (show_news.html) ===== */
.m-news-wrap{max-width:800px;margin:0 auto}
.m-news-head{text-align:center;margin-bottom:28px}
.m-news-head h1{font-size:32px;line-height:1.4;margin-bottom:14px;color:var(--m-dark)}
.m-news-head .meta{display:flex;justify-content:center;flex-wrap:wrap;gap:22px;color:#999;font-size:13px}
.m-news-head .meta i{margin-right:5px}
.m-news-cover{max-width:800px;margin:0 auto 28px}
.m-news-cover img{width:100%;border-radius:6px}
.m-news-wrap .neirong{font-size:16px;line-height:1.9;color:#444}
.m-news-wrap .neirong p{margin:0 0 16px}
.m-news-wrap .neirong img{display:block;max-width:100%;height:auto;margin:18px auto;border-radius:4px}
.m-news-wrap .neirong pre{background:#f7f7f7;padding:14px 16px;border-radius:4px;overflow:auto;font-size:14px;line-height:1.7;white-space:pre-wrap;word-break:break-all}
.m-news-wrap .neirong blockquote{margin:18px 0;padding:10px 18px;border-left:3px solid var(--m-red);background:#fafafa;color:#666}
.m-news-wrap .neirong table{width:100%;border-collapse:collapse;margin:18px 0}
.m-news-wrap .neirong table td,.m-news-wrap .neirong table th{border:1px solid #e6e6e6;padding:8px 12px;font-size:15px}
.m-news-tags{margin-top:30px;padding-top:20px;border-top:1px solid #eee;text-align:center}

/* ===== Search page (search.html) ===== */
.m-search-bar{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:26px}
.m-search-form{display:flex;flex:1 1 380px;max-width:520px;border:2px solid var(--m-red);border-radius:4px;overflow:hidden;background:#fff}
.m-search-form input{flex:1;min-width:0;border:none;outline:none;padding:11px 14px;font-size:14px;font-family:inherit}
.m-search-form button{flex:0 0 auto;border:none;background:var(--m-red);color:#fff;font-weight:700;font-size:14px;padding:0 28px;cursor:pointer;font-family:inherit}
.m-search-form button:hover{opacity:.88}
.m-search-sum{color:#888;font-size:14px}
.m-search-sum b{color:var(--m-red);font-weight:700}
.m-filter{border:1px solid #eee;border-radius:6px;background:#fafafa;padding:0 18px;margin-bottom:30px}
.m-filter-row{display:flex;gap:18px;padding:14px 0;border-bottom:1px dashed #e6e6e6}
.m-filter-row:last-child{border-bottom:none}
.m-filter-label{flex:0 0 72px;color:#333;font-weight:600;font-size:14px;line-height:30px}
.m-filter-list{flex:1;display:flex;flex-wrap:wrap;gap:4px}
.m-tag.on{background:var(--m-red);color:#fff;border-color:var(--m-red)}
.m-tag.on:hover{color:#fff;opacity:.88}
.m-search-grid{display:grid;grid-template-columns:1fr 300px;gap:36px;align-items:start}
.m-sr-item{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid #eee}
.m-sr-item:first-child{padding-top:0}
.m-sr-thumb{flex:0 0 180px}
.m-sr-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:4px;background:#f5f5f5}
.m-sr-body{flex:1;min-width:0}
.m-sr-body h3{font-size:18px;line-height:1.4;margin-bottom:8px}
.m-sr-body h3 a:hover{color:var(--m-red)}
.m-sr-body p{font-size:14px;color:#888;line-height:1.7;margin-bottom:10px}
.m-sr-meta{display:flex;flex-wrap:wrap;gap:18px;color:#aaa;font-size:12px}
.m-empty{padding:56px 0;text-align:center;color:#999;font-size:15px}
.m-side-box{border:1px solid #eee;border-radius:6px;padding:20px}
.m-side-box h3{font-size:18px;margin-bottom:12px;padding-bottom:10px;border-bottom:2px solid var(--m-red)}
.m-side-item{display:flex;gap:12px;align-items:center;padding:10px 0;border-bottom:1px dashed #f0f0f0}
.m-side-item:last-child{border-bottom:none}
.m-side-item img{width:76px;height:56px;object-fit:cover;border-radius:4px;flex-shrink:0}
.m-side-item span{font-size:14px;color:#555;line-height:1.5}
.m-side-item:hover span{color:var(--m-red)}

/* ===== Contact page (contact.html) ===== */
.m-contact-head{text-align:center;margin-bottom:44px}
.m-contact-head h1{font-size:34px;margin-bottom:10px}
.m-contact-company{font-size:16px;color:#555;font-weight:600;margin-bottom:6px}
.m-contact-tip{font-size:14px;color:#999}
.m-contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.m-contact-info h2{font-size:22px;line-height:1.5;margin-bottom:24px;color:var(--m-dark)}
.m-contact-list{list-style:none;padding:0;margin:0}
.m-contact-list li{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px dashed #e6e6e6}
.m-contact-list li:last-child{border-bottom:none}
.m-contact-list svg{width:18px;height:18px;fill:var(--m-red);flex-shrink:0;margin-top:4px}
.m-contact-list .lb{display:block;font-size:12px;color:#aaa;text-transform:uppercase;letter-spacing:.5px}
.m-contact-list .val{display:block;font-size:15px;color:#333;line-height:1.6}
.m-contact-list a:hover .val{color:var(--m-red)}
.m-contact-extra{margin-top:26px;font-size:15px;line-height:1.9;color:#555}
.m-contact-form{background:#fafafa;border:1px solid #eee;border-radius:6px;padding:30px}
.m-contact-form h2{font-size:22px;margin-bottom:10px}
.m-contact-form>p{font-size:13px;color:#888;line-height:1.7;margin-bottom:20px}
.m-f-row{margin-bottom:14px}
.m-f-row input,.m-f-row textarea{width:100%;border:1px solid #e2e2e2;border-radius:4px;padding:11px 14px;font-size:14px;font-family:inherit;background:#fff;outline:none;transition:border-color .2s}
.m-f-row input:focus,.m-f-row textarea:focus{border-color:var(--m-red)}
.m-f-row textarea{resize:vertical;min-height:110px}
.m-btn-send{width:100%;border:none;background:var(--m-red);color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;padding:13px 0;border-radius:4px;cursor:pointer;text-transform:uppercase;font-family:inherit}
.m-btn-send:hover{opacity:.88}

/* ===== About page (about.html) ===== */
.m-about-head{text-align:center;margin-bottom:48px}
.m-about-head h1{font-size:34px;margin-bottom:8px}
.m-about-company{font-size:16px;color:#555;font-weight:600}
.m-ab-block{margin-bottom:56px}
.m-ab-block:last-of-type{margin-bottom:0}
.m-ab-title{font-size:24px;line-height:1.3;margin-bottom:20px;padding-left:14px;border-left:4px solid var(--m-red)}
.m-ab-sub{font-size:18px;margin:30px 0 14px;color:var(--m-dark)}
.m-ab-intro{display:grid;grid-template-columns:1fr 380px;gap:40px;align-items:start}
.m-ab-text p{font-size:15px;line-height:1.9;color:#555;margin:0 0 14px}
.m-ab-vision{margin-top:18px;padding:14px 18px;background:#fafafa;border-left:3px solid var(--m-red);font-size:15px;color:#444;line-height:1.8}
.m-ab-pic img{width:100%;border-radius:6px;border:1px solid #eee}
.m-ab-prods{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,1fr);gap:12px 28px}
.m-ab-prods li{font-size:14px;color:#666;line-height:1.7;padding:10px 16px;background:#fafafa;border-radius:4px}
.m-ab-prods strong{display:block;color:var(--m-dark);font-size:15px}
.m-ab-grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.m-ab-card{background:#fff;border:1px solid #eee;border-radius:6px;overflow:hidden}
.m-ab-card img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#f5f5f5}
.m-ab-card h4{font-size:15px;padding:14px;text-align:center;font-weight:600}
.m-ab-article{display:grid;grid-template-columns:340px 1fr;gap:36px;align-items:center}
.m-ab-lead{font-size:15px;line-height:1.9;color:#555;margin-bottom:24px}
.m-ab-certs{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.m-ab-cert{border:1px solid #eee;border-radius:6px;padding:12px;background:#fff}
.m-ab-cert img{width:100%;height:auto;border-radius:4px}
.m-ab-extra{margin-top:40px;font-size:15px;line-height:1.9;color:#555}

/* ===== Footer ===== */
.m-footer{background:#111;color:#bbb;padding:54px 0 0}
.m-footer .m-ft-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.m-footer h4{color:#fff;font-size:16px;margin-bottom:18px;text-transform:uppercase}
.m-footer p{font-size:14px;line-height:1.8;color:#999}
.m-footer .m-ft-menu a{display:block;padding:6px 0;font-size:14px;color:#999}
.m-footer .m-ft-menu a:hover{color:var(--m-red)}
.m-footer .m-ft-contact li{display:flex;gap:10px;margin-bottom:10px;font-size:14px;align-items:flex-start}
.m-footer .m-ft-contact svg{width:16px;height:16px;fill:var(--m-red);flex-shrink:0;margin-top:3px}
.m-footer .m-ft-bottom{border-top:1px solid #222;margin-top:36px;padding:18px 0;font-size:13px;color:#777}
.m-footer .m-ft-bottom-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.m-footer .m-ft-bottom a{color:#999}
.m-footer .m-ft-social{display:flex;gap:8px}
.m-footer .m-ft-social .m-soc{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:#2a2a2a;transition:background .2s}
.m-footer .m-ft-social .m-soc:hover{background:var(--m-red)}
.m-footer .m-ft-social .m-soc svg{width:16px;height:16px;fill:#bbb}
.m-footer .m-ft-social .m-soc:hover svg{fill:#fff}
.m-foot-toggle{display:none}

/* ===== Mobile menu overlay ===== */
.m-mobile-nav{position:fixed;inset:0 0 0 auto;width:min(320px,85%);background:#fff;z-index:1100;transform:translateX(100%);transition:transform .3s;overflow-y:auto;padding:20px 0}
.m-mobile-nav.open{transform:none}
.m-mobile-nav .m-mn-close{position:absolute;top:14px;right:18px;font-size:30px;border:none;background:none;cursor:pointer;color:#333}
.m-mobile-nav a{display:block;padding:14px 24px;border-bottom:1px solid #f0f0f0;font-weight:600;color:#333}
.m-mobile-nav a:hover{color:var(--m-red);background:#fafafa}
.m-mobile-nav .sub{background:#f9f9f9}
.m-mobile-nav .sub a{padding:12px 36px;font-weight:500;font-size:14px}
.m-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1050;display:none}
.m-overlay.open{display:block}

/* ===== Back to top ===== */
.m-totop{position:fixed;right:22px;bottom:22px;width:44px;height:44px;background:var(--m-red);color:#fff;border:none;border-radius:4px;cursor:pointer;display:none;z-index:900;font-size:20px;align-items:center;justify-content:center}
.m-totop.show{display:flex}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:1024px){
    .m-hero .m-wrap{flex-direction:column;text-align:center}
    .m-hero .m-hero-btns{justify-content:center}
    .m-split{flex-direction:column}
    .m-grid4{grid-template-columns:repeat(2,1fr)}
    .m-cases{grid-template-columns:1fr 1fr}
    .m-case:first-child{grid-row:auto}
    .m-quote-faq{flex-direction:column}
    .m-footer .m-ft-top{grid-template-columns:1fr 1fr}
    .m-prod-grid{grid-template-columns:repeat(2,1fr)}
    .m-rel-grid{grid-template-columns:repeat(2,1fr)}
    .m-detail{grid-template-columns:1fr}
    .m-search-grid{grid-template-columns:1fr}
    .m-contact-grid{grid-template-columns:1fr;gap:32px}
    .m-ab-intro{grid-template-columns:1fr}
    .m-ab-article{grid-template-columns:1fr}
    .m-ab-grid4{grid-template-columns:repeat(2,1fr)}
    .m-ab-certs{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:992px){
    .m-nav,.m-head-tools .m-search-btn,.m-head-tools .m-btn-dl{display:none}
    .m-burger{display:flex}
    .m-topbar .m-contact{display:none}
    .m-topbar .m-wrap{justify-content:center}
}
@media (max-width:768px){
    .ysd-section{flex-direction:column}
    .ysd-right{grid-template-columns:1fr}
    .m-hero .m-hero-text h1{font-size:34px}
    .m-sec-title{font-size:24px}
    .m-quote,.m-faq h2{padding:28px 22px}
    .m-faq h2{padding:0;font-size:26px}
    .m-cert-head{flex-wrap:wrap}
    .m-cases{grid-template-columns:1fr}
    .m-footer .m-ft-top{grid-template-columns:1fr}
    .m-prod-grid{grid-template-columns:1fr}
    .m-rel-grid{grid-template-columns:repeat(2,1fr)}
    .m-news-head h1{font-size:24px}
    .m-prevnext{flex-direction:column;gap:10px}
    .m-search-form{max-width:none;flex:1 1 100%}
    .m-filter-row{flex-direction:column;gap:6px}
    .m-filter-label{line-height:1.6}
    .m-sr-item{flex-direction:column;gap:12px}
    .m-sr-thumb{flex:none}
    .m-sr-thumb img{aspect-ratio:16/9}
    .m-about-head h1{font-size:26px}
    .m-ab-title{font-size:20px}
    .m-ab-grid4{grid-template-columns:1fr}
    .m-ab-prods{grid-template-columns:1fr}
}
@media (max-width:480px){
    .m-sec{padding:44px 0}
    .m-hero .m-hero-text h1{font-size:28px}
    .ysd-left{padding:30px 22px}
    .ysd-left h2{font-size:28px}
    .m-grid4{grid-template-columns:1fr}
    .m-rel-grid{grid-template-columns:1fr}
}