/* =========================================================
   上海速恒网络科技有限公司 — 全站设计系统 (对齐 yibaixun 尺寸排版)
   深色 + 橙色 (#ff6600) | 基准 1440 视口
   ========================================================= */
:root{
  --org:#ff6600;
  --org2:#ff5e00;
  --org-lt:#ff8a00;
  --dark:#1b1b1b;
  --dark2:#232323;
  --footer:#1f1f1f;
  --gray:#f5f5f5;
  --gray2:#f7f7f8;
  --txt:#222;
  --txt2:#666;
  --line:#e8e8e8;
}
html,body{overflow-x:hidden;-webkit-font-smoothing:antialiased;}
body{font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:15px;color:var(--txt);background:#fff;line-height:1.6;}
a{color:inherit;text-decoration:none;-webkit-transition:all .3s;transition:all .3s;}
a:hover,a:focus{text-decoration:none;color:var(--org);}
ul,dl,dd,dt,p,h1,h2,h3,h4{margin:0;padding:0;}
li{list-style:none;}
img{max-width:100%;border:0;vertical-align:top;}
.container{width:92%;max-width:1800px;margin-left:auto;margin-right:auto;padding:0;}

/* ---------------- 头部 (参考站: 64px 细高深色) ---------------- */
.yb-header{position:fixed;left:0;top:0;width:100%;z-index:100;background:rgba(20,20,20,.92);-webkit-transition:background .3s,box-shadow .3s;transition:background .3s,box-shadow .3s;}
.yb-header.scrolled{background:rgba(16,16,16,.98);box-shadow:0 6px 22px rgba(0,0,0,.28);}
.yb-header.scrolled .yb-header-inner{height:70px;}
.yb-header.scrolled .yb-nav > ul > li > a{line-height:70px;}
.yb-header.scrolled .yb-logo img{max-height:42px;}
.yb-nav > ul > li > a,.yb-logo img{-webkit-transition:all .3s;transition:all .3s;}
.yb-header-inner{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;height:84px;}
.yb-logo{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;margin-right:50px;}
.yb-logo img{max-height:50px;max-width:230px;}
.yb-nav{display:-webkit-flex;display:flex;-webkit-flex:1;flex:1;-webkit-justify-content:center;justify-content:center;min-width:0;}
.yb-nav > ul{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-flex-wrap:nowrap;flex-wrap:nowrap;}
.yb-nav > ul > li{position:relative;white-space:nowrap;}
.yb-nav > ul > li > a{display:block;padding:0 26px;line-height:84px;font-size:17px;color:#fff;letter-spacing:2px;font-weight:500;position:relative;-webkit-transition:color .3s;transition:color .3s;}
.yb-nav > ul > li > a:after{content:"";position:absolute;left:50%;bottom:18px;width:0;height:3px;border-radius:3px;background:-webkit-linear-gradient(90deg,#ffa63e,#ff5e00);background:linear-gradient(90deg,#ffa63e,#ff5e00);-webkit-transition:all .3s;transition:all .3s;-webkit-transform:translateX(-50%);transform:translateX(-50%);}
.yb-nav > ul > li:hover > a:after,.yb-nav > ul > li.current > a:after{width:34px;}
.yb-nav > ul > li:hover > a,.yb-nav > ul > li.current > a{color:var(--org);}
.yb-nav .yb-sub{position:absolute;left:50%;-webkit-transform:translateX(-50%);transform:translateX(-50%);top:84px;background:-webkit-linear-gradient(90deg,#ff8a00,#ff5e00);background:linear-gradient(90deg,#ff8a00,#ff5e00);border-radius:0 0 8px 8px;padding:0 8px;opacity:0;visibility:hidden;-webkit-transition:all .28s;transition:all .28s;z-index:20;box-shadow:0 14px 34px rgba(255,102,0,.32);display:-webkit-flex;display:flex;-webkit-flex-wrap:nowrap;flex-wrap:nowrap;}
.yb-nav .yb-sub:before{content:"";position:absolute;left:50%;top:-5px;width:10px;height:10px;background:#ff8a00;-webkit-transform:translateX(-50%) rotate(45deg);transform:translateX(-50%) rotate(45deg);border-radius:2px 0 0 0;}
.yb-nav > ul > li:hover .yb-sub{opacity:1;visibility:visible;top:84px;}
.yb-nav .yb-sub a{display:block;padding:17px 24px;font-size:15px;letter-spacing:1px;color:#fff;white-space:nowrap;position:relative;}
.yb-nav .yb-sub a:after{content:"";position:absolute;left:50%;bottom:8px;width:0;height:2px;background:#fff;border-radius:2px;-webkit-transform:translateX(-50%);transform:translateX(-50%);-webkit-transition:all .25s;transition:all .25s;}
.yb-nav .yb-sub a:hover{background:rgba(255,255,255,.16);color:#fff;}
.yb-nav .yb-sub a:hover:after{width:18px;}
.yb-head-phone{width:44px;height:44px;border-radius:50%;background:var(--org);color:#fff;display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center;font-size:19px;margin-left:26px;-webkit-flex:none;flex:none;box-shadow:0 6px 16px rgba(255,102,0,.35);-webkit-transition:all .3s;transition:all .3s;}
.yb-head-phone:hover{color:#fff;background:var(--org-lt);-webkit-transform:translateY(-2px);transform:translateY(-2px);}
.yb-head-cta{margin-left:16px;display:inline-block;background:-webkit-linear-gradient(90deg,#ff8a00,#ff5e00);background:linear-gradient(90deg,#ff8a00,#ff5e00);color:#fff;font-size:15px;letter-spacing:1px;padding:12px 26px;border-radius:24px;white-space:nowrap;box-shadow:0 6px 16px rgba(255,102,0,.35);-webkit-transition:all .3s;transition:all .3s;}
.yb-head-cta:hover{color:#fff;-webkit-transform:translateY(-2px);transform:translateY(-2px);box-shadow:0 10px 22px rgba(255,102,0,.45);}

/* 手机端顶栏 */
.yb-mob-head{display:none;}
.yb-mob-menu{width:44px;height:44px;background:none;border:none;outline:none;position:relative;}
.yb-mob-menu i,.yb-mob-menu i:before,.yb-mob-menu i:after{content:"";position:absolute;left:9px;width:26px;height:2px;background:#fff;-webkit-transition:all .3s;transition:all .3s;}
.yb-mob-menu i{top:21px;}
.yb-mob-menu i:before{top:-8px;left:0;}
.yb-mob-menu i:after{top:8px;left:0;}
.yb-mob-menu.open i{background:transparent;}
.yb-mob-menu.open i:before{top:0;-webkit-transform:rotate(45deg);transform:rotate(45deg);}
.yb-mob-menu.open i:after{top:0;-webkit-transform:rotate(-45deg);transform:rotate(-45deg);}
.yb-mob-panel{display:none;position:fixed;top:60px;left:0;width:100%;bottom:0;background:rgba(20,20,20,.98);z-index:99;overflow-y:auto;padding:10px 0 60px;}
.yb-mob-panel > ul > li{border-bottom:1px solid rgba(255,255,255,.08);}
.yb-mob-panel > ul > li > a{display:block;padding:14px 24px;color:#fff;font-size:16px;}
.yb-mob-panel .yb-mob-sub{background:rgba(255,255,255,.04);}
.yb-mob-panel .yb-mob-sub a{display:block;padding:11px 38px;color:#bbb;font-size:14px;border-top:1px solid rgba(255,255,255,.05);}
.yb-mob-panel a:hover{color:var(--org);}

/* ---------------- 首页大图 (纯图片滚动轮播) ---------------- */
.yb-hero{position:relative;background:var(--dark);}
.yb-hero .slick-slide img{width:100%;height:1060px;-o-object-fit:cover;object-fit:cover;display:block;}
.yb-hero .slick-dots{bottom:22px;}
.yb-hero .slick-dots li{width:26px;}
.yb-hero .slick-dots li button:before{color:#fff;opacity:.4;font-size:9px;}
.yb-hero .slick-dots li.slick-active button:before{color:var(--org);opacity:1;}

/* ---------------- 区块标题 (参考站: 橙色斜体大字 + 黑色粗体) ---------------- */
.yb-sec{padding:90px 0;}
.yb-sec-gray{background:var(--gray);}
.yb-sec-dark{background:var(--dark);}
.yb-sec-head .en{display:block;font-size:44px;font-weight:800;font-style:italic;color:var(--org);line-height:1.1;text-transform:uppercase;font-family:Arial,"Microsoft YaHei",sans-serif;}
.yb-sec-head .cn{display:block;margin-top:8px;font-size:26px;font-weight:700;color:var(--txt);letter-spacing:1px;}
.yb-sec-head .desc{display:block;margin-top:10px;font-size:12px;color:#999;letter-spacing:.5px;}
.yb-sec-head.tc{text-align:center;}
.yb-sec-head.dark .cn{color:#fff;}
.yb-sec-head.dark .desc{color:#8a8a8a;}

/* ---------------- ABOUT (左文右图) ---------------- */
.yb-about-flex{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;gap:60px;}
.yb-about-lt{-webkit-flex:1;flex:1;min-width:0;}
.yb-about-lt .p{margin-top:26px;font-size:15px;line-height:2;color:#555;text-align:justify;}
.yb-stats{display:-webkit-flex;display:flex;margin-top:44px;gap:30px;}
.yb-stats li{-webkit-flex:1;flex:1;min-width:0;}
.yb-stats b{display:block;font-size:42px;font-weight:800;color:var(--txt);line-height:1;font-family:Arial,sans-serif;white-space:nowrap;}
.yb-stats b i{font-style:normal;color:var(--org);font-size:20px;font-weight:700;margin-left:3px;vertical-align:8px;}
.yb-stats span{display:block;margin-top:10px;font-size:13px;color:var(--txt2);}
.yb-about-more{display:inline-block;margin-top:36px;padding:11px 36px;background:var(--org);color:#fff;border-radius:22px;font-size:14px;}
.yb-about-more:hover{background:var(--org-lt);color:#fff;}
.yb-about-rt{-webkit-flex:0 0 46%;flex:0 0 46%;max-width:46%;}
.yb-about-rt .imgbox{border-radius:24px;overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.18);}
.yb-about-rt .imgbox img{width:100%;display:block;}

/* ---------------- SERVE (深色 + 中间橙色渐变卡) ---------------- */
.yb-srv-head{position:relative;}
.yb-srv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:56px;}
.yb-srv-item{background:var(--dark2);border-radius:12px;padding:44px 36px;min-height:360px;display:-webkit-flex;display:flex;flex-direction:column;-webkit-flex-direction:column;-webkit-transition:all .35s;transition:all .35s;position:relative;overflow:hidden;}
.yb-srv-item:hover{-webkit-transform:translateY(-8px);transform:translateY(-8px);background:-webkit-linear-gradient(160deg,#ffa63e 0%,#ff6a00 60%,#ff5e00 100%);background:linear-gradient(160deg,#ffa63e 0%,#ff6a00 60%,#ff5e00 100%);box-shadow:0 16px 40px rgba(255,102,0,.35);}
.yb-srv-item:hover .ico svg{stroke:#fff;opacity:1;}
.yb-srv-item:hover h3{color:#fff;}
.yb-srv-item:hover p{color:rgba(255,255,255,.92);}
.yb-srv-item .ico{width:56px;height:56px;margin-bottom:26px;}
.yb-srv-item .ico svg{width:56px;height:56px;stroke:#fff;fill:none;stroke-width:1.5;opacity:.9;-webkit-transition:all .35s;transition:all .35s;}
.yb-srv-item h3{font-size:22px;color:#fff;font-weight:700;line-height:1.5;margin-bottom:16px;}
.yb-srv-item p{font-size:14px;line-height:2;color:#9d9d9d;-webkit-transition:all .35s;transition:all .35s;}

/* ---------------- CASE (参考 suheng.net: 4列瓷贴 + 悬浮浏览网站) ---------------- */
.yb-case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:50px;}
.yb-case-item{position:relative;display:block;background:#eee;}
.yb-case-item .pimg{display:block;position:relative;height:250px;overflow:hidden;}
@supports (aspect-ratio:1){.yb-case-item .pimg{height:auto;aspect-ratio:29/20;}}
.yb-case-item .pimg img{width:100%;height:100%;-o-object-fit:cover;object-fit:cover;-webkit-transition:all .5s;transition:all .5s;}
.yb-case-item:hover .pimg img{-webkit-transform:scale(1.05);transform:scale(1.05);}
.yb-case-item .cover{position:absolute;left:0;top:0;width:100%;height:100%;z-index:2;background:rgba(0,0,0,.55);opacity:0;visibility:hidden;-webkit-transition:all .4s;transition:all .4s;display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center;}
.yb-case-item:hover .cover{opacity:1;visibility:visible;}
.yb-case-item .cover b{display:inline-block;padding:12px 34px;border:1px solid #fff;color:#fff;font-size:14px;font-weight:400;letter-spacing:2px;-webkit-transition:all .3s;transition:all .3s;}
.yb-case-item .cover b:hover{background:var(--org);border-color:var(--org);color:#fff;}
.yb-case-item .pt{display:block;padding:16px 16px;position:relative;overflow:hidden;background:#fff;white-space:nowrap;}
.yb-case-item .pt:before{content:"";position:absolute;left:0;top:0;width:100%;height:100%;background:var(--org);-webkit-transform:scaleY(0);transform:scaleY(0);-webkit-transform-origin:50% 0;transform-origin:50% 0;-webkit-transition:-webkit-transform .3s;transition:transform .3s;}
.yb-case-item:hover .pt:before{-webkit-transform:scaleY(1);transform:scaleY(1);}
.yb-case-item .pt h3{display:inline-block;position:relative;z-index:2;font-size:16px;font-weight:700;color:#333;max-width:72%;overflow:hidden;text-overflow:ellipsis;vertical-align:middle;-webkit-transition:all .3s;transition:all .3s;}
.yb-case-item .pt span{position:relative;z-index:2;margin-left:10px;font-size:12px;color:#999;-webkit-transition:all .3s;transition:all .3s;}
.yb-case-item:hover .pt h3,.yb-case-item:hover .pt span{color:#fff;}

/* ---------------- 解决方案 (交互步骤条) ---------------- */
.yb-sol{position:relative;background:radial-gradient(1100px 520px at 50% 0,#333 0%,var(--dark) 70%);min-height:100vh;display:-webkit-flex;display:flex;-webkit-flex-direction:column;flex-direction:column;-webkit-justify-content:center;justify-content:center;padding:100px 0;-webkit-box-sizing:border-box;box-sizing:border-box;text-align:center;overflow:hidden;}
.yb-sol:before{content:"";position:absolute;left:-120px;bottom:-160px;width:420px;height:420px;border:1px solid rgba(255,255,255,.06);border-radius:50%;}
.yb-sol:after{content:"";position:absolute;right:-100px;top:-160px;width:360px;height:360px;border:1px solid rgba(255,102,0,.15);border-radius:50%;}
.yb-sol-head{position:relative;z-index:2;}
.yb-sol-head .en{display:block;font-size:50px;font-weight:800;font-style:italic;color:var(--org);line-height:1.1;text-transform:uppercase;font-family:Arial,"Microsoft YaHei",sans-serif;}
.yb-sol-head h2{margin-top:10px;font-size:40px;font-weight:700;color:#fff;letter-spacing:2px;}
.yb-sol-head p{margin:20px auto 0;max-width:780px;font-size:15px;color:rgba(255,255,255,.72);line-height:1.9;}
.yb-sol-tabs{position:relative;z-index:2;margin-top:66px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.yb-sol-tabs a{position:relative;display:block;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.09);border-radius:10px;padding:28px 16px 24px;cursor:pointer;-webkit-transition:all .3s;transition:all .3s;}
.yb-sol-tabs a i{display:block;font-style:normal;font-size:30px;font-weight:800;font-family:Arial,sans-serif;color:#777;-webkit-transition:all .3s;transition:all .3s;}
.yb-sol-tabs a b{display:block;margin-top:10px;font-size:18px;font-weight:700;color:#ddd;-webkit-transition:all .3s;transition:all .3s;}
.yb-sol-tabs a span{display:block;margin-top:4px;font-size:12px;color:#8a8a8a;letter-spacing:1px;}
.yb-sol-tabs a:after{content:"";position:absolute;left:50%;bottom:0;width:0;height:3px;border-radius:3px 3px 0 0;background:-webkit-linear-gradient(90deg,#ff8a00,#ff5e00);background:linear-gradient(90deg,#ff8a00,#ff5e00);-webkit-transform:translateX(-50%);transform:translateX(-50%);-webkit-transition:all .3s;transition:all .3s;}
.yb-sol-tabs a:hover{border-color:rgba(255,102,0,.55);-webkit-transform:translateY(-4px);transform:translateY(-4px);}
.yb-sol-tabs a:hover i{color:var(--org-lt);}
.yb-sol-tabs a.on{background:-webkit-linear-gradient(160deg,rgba(255,138,0,.16) 0%,rgba(255,94,0,.07) 100%);background:linear-gradient(160deg,rgba(255,138,0,.16) 0%,rgba(255,94,0,.07) 100%);border-color:rgba(255,102,0,.6);box-shadow:0 12px 30px rgba(255,102,0,.18);}
.yb-sol-tabs a.on i{color:var(--org-lt);}
.yb-sol-tabs a.on b{color:#fff;}
.yb-sol-tabs a.on:after{width:56%;}
.yb-sol-panes{position:relative;z-index:2;margin-top:34px;}
.yb-sol-pane{display:none;text-align:left;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.09);border-radius:14px;padding:58px 64px;overflow:hidden;position:relative;}
.yb-sol-pane.on{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;gap:44px;-webkit-animation:ybFade .45s ease;animation:ybFade .45s ease;}
@-webkit-keyframes ybFade{from{opacity:0;-webkit-transform:translateY(14px);}to{opacity:1;-webkit-transform:none;}}
@keyframes ybFade{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:none;}}
.yb-sol-pane .num{-webkit-flex:none;flex:none;font-size:140px;font-weight:800;font-family:Arial,sans-serif;line-height:1;color:transparent;-webkit-text-stroke:2px rgba(255,102,0,.55);text-stroke:2px rgba(255,102,0,.55);}
.yb-sol-pane .txt h3{font-size:24px;font-weight:700;color:#fff;letter-spacing:1px;}
.yb-sol-pane .txt p{margin-top:16px;font-size:15px;color:#a5a5a5;line-height:2.1;}
.yb-sol-pane .chips{margin-top:24px;display:-webkit-flex;display:flex;gap:12px;-webkit-flex-wrap:wrap;flex-wrap:wrap;}
.yb-sol-pane .chips span{border:1px solid rgba(255,102,0,.5);color:var(--org-lt);border-radius:16px;padding:6px 18px;font-size:12px;letter-spacing:1px;}

/* ---------------- OUR CIRCLE 新闻 (灰底文字卡) ---------------- */
.yb-news-top{display:-webkit-flex;display:flex;-webkit-align-items:flex-end;align-items:flex-end;-webkit-justify-content:space-between;justify-content:space-between;margin-bottom:36px;}
.yb-news-tabs{display:-webkit-flex;display:flex;-webkit-flex-wrap:wrap;flex-wrap:wrap;gap:6px 30px;padding-bottom:8px;}
.yb-news-tabs a{font-size:14px;color:#555;}
.yb-news-tabs a:hover,.yb-news-tabs a.on{color:var(--org);}
.yb-news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.yb-news-item{display:block;background:var(--gray2);border-radius:8px;overflow:hidden;display:-webkit-flex;display:flex;flex-direction:column;-webkit-flex-direction:column;-webkit-transition:all .35s;transition:all .35s;}
.yb-news-item:hover{-webkit-transform:translateY(-6px);transform:translateY(-6px);box-shadow:0 16px 36px rgba(0,0,0,.12);background:#fff;}
.yb-news-item .thumb{display:block;height:190px;overflow:hidden;background:#eee;}
.yb-news-item .thumb img{width:100%;height:100%;-o-object-fit:cover;object-fit:cover;-webkit-transition:all .5s;transition:all .5s;}
.yb-news-item:hover .thumb img{-webkit-transform:scale(1.06);transform:scale(1.06);}
.yb-news-item .flag{margin:20px 24px 0;font-size:13px;color:var(--org);}
.yb-news-item h3{margin:10px 24px 0;font-size:17px;font-weight:700;line-height:1.6;height:54px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.yb-news-item h3:hover{color:var(--org);}
.yb-news-item .pdesc{margin:10px 24px 0;font-size:13px;color:#999;line-height:1.9;height:50px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.yb-news-item .pdate{margin:auto 24px 0;padding:14px 0 18px;font-size:13px;color:#bbb;font-family:Arial,sans-serif;border-top:1px dashed var(--line);}
/* 无图文章 → 深色文字卡 */
.yb-news-item.noimg{background:-webkit-linear-gradient(160deg,#2a2a2a 0%,#1b1b1b 100%);background:linear-gradient(160deg,#2a2a2a 0%,#1b1b1b 100%);position:relative;overflow:hidden;}
.yb-news-item.noimg:before{content:"";position:absolute;right:-70px;top:-70px;width:190px;height:190px;border:1px solid rgba(255,102,0,.2);border-radius:50%;}
.yb-news-item.noimg:after{content:"";position:absolute;right:-30px;top:-30px;width:110px;height:110px;border:1px solid rgba(255,255,255,.08);border-radius:50%;}
.yb-news-item.noimg .flag{color:var(--org-lt);}
.yb-news-item.noimg h3{color:#fff;}
.yb-news-item.noimg .pdesc{color:#9a9a9a;}
.yb-news-item.noimg .pdate{color:#8a8a8a;border-color:rgba(255,255,255,.1);}
.yb-news-item.noimg:hover{background:-webkit-linear-gradient(160deg,#3a2c1e 0%,#241a0f 100%);background:linear-gradient(160deg,#3a2c1e 0%,#241a0f 100%);}
.yb-news-item.noimg h3:hover{color:var(--org-lt);}
.yb-news-more{text-align:center;margin-top:44px;}
.yb-more-btn{display:inline-block;padding:11px 42px;border-radius:20px;background:-webkit-linear-gradient(90deg,#ff8a00,#ff5e00);background:linear-gradient(90deg,#ff8a00,#ff5e00);color:#fff;font-size:14px;letter-spacing:1px;box-shadow:0 6px 16px rgba(255,102,0,.35);}
.yb-more-btn:hover{color:#fff;-webkit-transform:translateY(-2px);transform:translateY(-2px);box-shadow:0 10px 22px rgba(255,102,0,.5);}

/* ---------------- 客户墙 ---------------- */
.yb-partners{background:#fff;padding:86px 0 96px;text-align:center;}
.yb-partners h3{font-size:34px;font-weight:700;color:var(--txt);letter-spacing:1px;}
.yb-partners p{margin:18px auto 0;max-width:620px;font-size:14px;color:#888;line-height:2;}
.yb-kehu{margin-top:54px;border-top:1px solid #f0f0f0;border-left:1px solid #f0f0f0;}
.yb-kehu ul{display:grid;grid-template-columns:repeat(8,1fr);}
.yb-kehu ul li{position:relative;border-right:1px solid #f0f0f0;border-bottom:1px solid #f0f0f0;background:#fff;}
.yb-kehu ul li a{display:block;position:relative;padding:0;}
.yb-kehu ul li .lg{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center;height:104px;overflow:hidden;}
.yb-kehu ul li .lg img{width:72%;max-width:170px;height:auto;display:block;opacity:.5;-webkit-filter:grayscale(100%);filter:grayscale(100%);-webkit-transition:all .4s;transition:all .4s;}
.yb-kehu ul li:hover .lg img{opacity:1;-webkit-filter:grayscale(0);filter:grayscale(0);-webkit-transform:scale(1.06);transform:scale(1.06);}
.yb-kehu ul li .bg{position:absolute;left:0;top:0;width:100%;height:100%;z-index:10;pointer-events:none;}
.yb-kehu ul li .bg:before,.yb-kehu ul li .bg:after{content:"";position:absolute;left:0;top:0;right:0;bottom:0;opacity:0;-webkit-transition:opacity .35s,-webkit-transform .35s;transition:opacity .35s,transform .35s;}
.yb-kehu ul li .bg:before{border-top:2px solid var(--org);border-bottom:2px solid var(--org);-webkit-transform:scale(0,1);transform:scale(0,1);}
.yb-kehu ul li .bg:after{border-left:2px solid var(--org);border-right:2px solid var(--org);-webkit-transform:scale(1,0);transform:scale(1,0);}
.yb-kehu ul li:hover .bg:before,.yb-kehu ul li:hover .bg:after{opacity:1;-webkit-transform:scale(1);transform:scale(1);}

/* ---------------- CTA 表单区 (白色大卡) ---------------- */
.yb-cta{background:var(--gray);padding:0 0 90px;}
.yb-cta-card{background:#fff;border-radius:8px;box-shadow:0 20px 50px rgba(0,0,0,.1);padding:50px 56px;display:-webkit-flex;display:flex;gap:56px;}
.yb-cta-lt{-webkit-flex:0 0 40%;flex:0 0 40%;max-width:40%;}
.yb-cta-lt h3{font-size:24px;font-weight:700;line-height:1.6;color:var(--txt);}
.yb-cta-lt .p{margin-top:20px;font-size:13px;color:#888;line-height:2.1;}
.yb-cta-tel{margin-top:26px;}
.yb-cta-tel b{display:block;font-size:30px;font-weight:800;color:var(--org);font-family:Arial,sans-serif;letter-spacing:1px;}
.yb-cta-rt{-webkit-flex:1;flex:1;min-width:0;}
.yb-cta-rt .rt-title{font-size:16px;font-weight:700;color:var(--txt);}
.yb-cta-radios{margin-top:16px;display:-webkit-flex;display:flex;gap:26px;}
.yb-cta-radios label{font-size:14px;color:#666;display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;cursor:pointer;position:relative;-webkit-transition:all .25s;transition:all .25s;}
.yb-cta-radios input{position:absolute;left:0;top:0;opacity:0;width:0;height:0;}
.yb-cta-radios i{width:16px;height:16px;border-radius:50%;background:#ddd;display:inline-block;margin-right:8px;-webkit-flex:none;flex:none;position:relative;-webkit-transition:all .25s;transition:all .25s;}
.yb-cta-radios i:after{content:"";position:absolute;left:5px;top:5px;width:6px;height:6px;border-radius:50%;background:#fff;opacity:0;-webkit-transition:all .25s;transition:all .25s;}
.yb-cta-radios input:checked + i{background:var(--org);box-shadow:0 0 0 3px rgba(255,102,0,.18);}
.yb-cta-radios input:checked + i:after{opacity:1;}
.yb-cta-radios label:hover{color:var(--org);}
.yb-cta-radios label:hover input:not(:checked) + i{background:#ffb27a;}
.yb-cta-form{margin-top:20px;display:grid;grid-template-columns:1fr 1fr;gap:16px 20px;}
.yb-cta-form .fitem label{display:block;font-size:13px;color:#666;margin-bottom:8px;}
.yb-cta-form .fitem input{width:100%;background:var(--gray);border:1px solid transparent;border-radius:3px;padding:12px 14px;font-size:13px;outline:none;-webkit-transition:all .3s;transition:all .3s;}
.yb-cta-form .fitem input:focus{background:#fff;border-color:var(--org);}
.yb-cta-form .fsub{grid-column:1 / -1;-webkit-justify-self:start;justify-self:start;margin-top:6px;background:-webkit-linear-gradient(90deg,#ff8a00,#ff5e00);background:linear-gradient(90deg,#ff8a00,#ff5e00);color:#fff;font-size:14px;padding:13px 38px;border-radius:6px;border:none;cursor:pointer;letter-spacing:1px;}
.yb-cta-form .fsub:hover{box-shadow:0 8px 20px rgba(255,102,0,.45);}

/* ---------------- 页脚 (深色多列) ---------------- */
.yb-footer{background:var(--footer);color:#9a9a9a;}
.yb-foot-top{border-bottom:1px solid rgba(255,255,255,.08);}
.yb-foot-top-in{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:space-between;justify-content:space-between;height:74px;}
.yb-foot-top-in h3{font-size:20px;font-weight:700;color:#fff;}
.yb-foot-nav{display:-webkit-flex;display:flex;gap:38px;}
.yb-foot-nav a{font-size:14px;color:#ccc;}
.yb-foot-nav a:hover{color:var(--org);}
.yb-foot-main{display:-webkit-flex;display:flex;gap:60px;padding:52px 0 40px;}
.yb-foot-contact{-webkit-flex:0 0 34%;flex:0 0 34%;max-width:34%;}
.yb-foot-contact h4,.yb-foot-adv h4{font-size:18px;font-weight:700;color:#fff;margin-bottom:22px;}
.yb-foot-contact .tel{font-size:28px;font-weight:800;color:var(--org);font-family:Arial,sans-serif;letter-spacing:1px;display:block;}
.yb-foot-contact p{margin-top:12px;font-size:13px;line-height:2;}
.yb-foot-qr{margin-top:22px;display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;gap:16px;}
.yb-foot-qr img{width:96px;height:96px;background:#fff;padding:4px;border-radius:4px;}
.yb-foot-qr span{font-size:12px;color:#888;line-height:2;}
.yb-foot-adv{-webkit-flex:1;flex:1;}
.yb-foot-adv ul{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 26px;}
.yb-foot-adv ul li{font-size:13px;color:#b5b5b5;display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.07);border-radius:6px;padding:11px 16px;-webkit-transition:all .3s;transition:all .3s;}
.yb-foot-adv ul li:hover{border-color:rgba(255,102,0,.55);background:rgba(255,102,0,.1);color:#fff;-webkit-transform:translateX(4px);transform:translateX(4px);}
.yb-foot-adv ul li:before{content:"✓";-webkit-flex:none;flex:none;width:18px;height:18px;line-height:18px;text-align:center;border-radius:50%;background:var(--org);color:#fff;font-size:11px;margin-right:10px;}
.yb-foot-links{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;font-size:13px;line-height:2.2;}
.yb-foot-links b{color:#ccc;font-weight:700;margin-right:16px;}
.yb-foot-links a{color:#888;margin-right:18px;}
.yb-foot-links a:hover{color:var(--org);}
.yb-foot-bar{background:#181818;padding:16px 0;font-size:13px;color:#777;}
.yb-foot-bar-in{display:-webkit-flex;display:flex;-webkit-justify-content:space-between;justify-content:space-between;gap:10px;-webkit-flex-wrap:wrap;flex-wrap:wrap;}
.yb-foot-bar a{color:#777;}
.yb-foot-bar a:hover{color:var(--org);}

/* ---------------- 手机端工具条 / 返回顶部 ---------------- */
.yb-mobbar{display:none;}
.yb-gotop{position:fixed;right:22px;bottom:90px;width:46px;height:46px;background:var(--dark);border-radius:6px;color:#fff;text-align:center;line-height:46px;font-size:20px;cursor:pointer;z-index:90;opacity:0;visibility:hidden;-webkit-transition:all .3s;transition:all .3s;}
.yb-gotop.show{opacity:1;visibility:visible;}
.yb-gotop:hover{background:var(--org);color:#fff;}

/* ---------------- 内页 (沿用) ---------------- */
.yb-page-banner{position:relative;background:var(--dark);padding:110px 0 90px;overflow:hidden;}
.yb-page-banner:before{content:"";position:absolute;left:0;top:0;width:100%;height:100%;background:-webkit-linear-gradient(120deg,rgba(255,138,0,.16) 0%,rgba(0,0,0,0) 55%),radial-gradient(900px 300px at 85% 20%,rgba(255,102,0,.25),rgba(0,0,0,0) 60%);}
.yb-page-banner .container{position:relative;z-index:2;}
.yb-page-banner h2{font-size:34px;color:#fff;font-weight:700;letter-spacing:1px;}
.yb-page-banner h2 em{font-style:italic;color:var(--org-lt);font-size:40px;margin-right:14px;text-transform:uppercase;}
.yb-page-banner p{margin-top:10px;color:#9a9a9a;font-size:14px;}
.yb-crumb{margin-top:18px;font-size:13px;color:#8a8a8a;}
.yb-crumb a{color:#8a8a8a;}
.yb-crumb a:hover{color:var(--org);}
.yb-crumb span{color:#ddd;}
.yb-catnav{background:#fff;box-shadow:0 6px 18px rgba(0,0,0,.06);border-radius:6px;padding:6px 10px;margin-top:-34px;position:relative;z-index:10;display:-webkit-flex;display:flex;-webkit-flex-wrap:wrap;flex-wrap:wrap;gap:4px;}
.yb-catnav a{display:inline-block;padding:10px 22px;font-size:14px;color:var(--txt2);border-radius:4px;}
.yb-catnav a:hover{color:var(--org);background:#fff5ef;}
.yb-catnav a.ez_a{background:var(--org);color:#fff;}
.yb-catnav a.ez_a:hover{color:#fff;}
.yb-catnav .yb-sub-wrap{position:relative;}
.yb-catnav .yb-sub{display:none;position:absolute;left:0;top:100%;background:#fff;box-shadow:0 8px 24px rgba(0,0,0,.12);border-radius:6px;padding:6px 0;min-width:140px;z-index:20;}
.yb-catnav .yb-sub-wrap:hover .yb-sub{display:block;}
.yb-catnav .yb-sub a{display:block;padding:8px 18px;border-radius:0;}
.yb-newslist{padding:70px 0 80px;}
.yb-nl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.yb-nl-item{display:block;background:#fff;border:1px solid var(--line);border-radius:8px;padding:26px 30px;position:relative;-webkit-transition:all .3s;transition:all .3s;}
.yb-nl-item:hover{border-color:var(--org);box-shadow:0 12px 30px rgba(255,102,0,.12);-webkit-transform:translateY(-4px);transform:translateY(-4px);}
.yb-nl-item .date{float:left;width:78px;text-align:center;border-right:1px dashed var(--line);margin-right:24px;padding:4px 14px 4px 0;}
.yb-nl-item .date b{display:block;font-size:30px;font-weight:800;color:var(--org);font-family:Arial,sans-serif;line-height:1.1;}
.yb-nl-item .date span{display:block;font-size:13px;color:#999;margin-top:4px;}
.yb-nl-item .info h3{font-size:16px;font-weight:700;color:var(--txt);line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.yb-nl-item .info h3 a:hover{color:var(--org);}
.yb-nl-item .info p{margin-top:10px;font-size:13px;color:#999;line-height:1.9;height:50px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.yb-caselist{padding:70px 0 80px;}
.yb-cl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.yb-cl-item{display:block;border-radius:8px;overflow:hidden;position:relative;background:#1c1c1c;}
.yb-cl-item img{width:100%;height:190px;-o-object-fit:cover;object-fit:cover;display:block;opacity:.92;-webkit-transition:all .4s;transition:all .4s;}
.yb-cl-item:hover img{opacity:.6;-webkit-transform:scale(1.05);transform:scale(1.05);}
.yb-cl-item .tt{position:absolute;left:0;bottom:0;width:100%;padding:34px 18px 14px;background:-webkit-linear-gradient(top,rgba(0,0,0,0),rgba(0,0,0,.78));background:linear-gradient(180deg,rgba(0,0,0,0),rgba(0,0,0,.78));color:#fff;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.yb-detail{padding:60px 0 80px;}
.yb-detail-main{background:#fff;border:1px solid var(--line);border-radius:8px;padding:44px 52px;box-shadow:0 6px 18px rgba(0,0,0,.05);}
.yb-dt-title{font-size:26px;font-weight:700;color:var(--txt);line-height:1.5;}
.yb-dt-meta{margin-top:14px;padding-bottom:22px;border-bottom:1px solid var(--line);font-size:13px;color:#999;}
.yb-dt-meta span{margin-right:26px;}
.yb-dt-content{margin-top:28px;font-size:15px;line-height:2.1;color:#444;word-wrap:break-word;overflow:hidden;}
.yb-dt-content img{max-width:100%;height:auto;}
.yb-dt-content p{margin-bottom:12px;}
.yb-dt-pn{margin-top:44px;border-top:1px solid var(--line);padding-top:24px;}
.yb-dt-pn a{display:block;padding:10px 0;font-size:14px;color:var(--txt2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.yb-dt-pn a:hover{color:var(--org);}
.yb-dt-pn .prev:before{content:"上一篇：";color:#bbb;}
.yb-dt-pn .next:before{content:"下一篇：";color:#bbb;}
.yb-dt-back{margin-top:10px;text-align:center;}
.yb-dt-back a{display:inline-block;padding:10px 40px;border:1px solid var(--line);border-radius:22px;font-size:14px;color:var(--txt2);}
.yb-dt-back a:hover{border-color:var(--org);color:var(--org);}
.yb-single{padding:60px 0 80px;}
.yb-single-box{background:#fff;border:1px solid var(--line);border-radius:8px;padding:44px 52px;box-shadow:0 6px 18px rgba(0,0,0,.05);font-size:15px;line-height:2.1;color:#444;overflow:hidden;}
.yb-single-box img{max-width:100%;}
.yb-page{text-align:center;margin-top:44px;}
.yb-page a,.yb-page span{display:inline-block;min-width:38px;margin:0 3px;padding:9px 14px;border:1px solid var(--line);border-radius:4px;font-size:14px;color:var(--txt2);background:#fff;}
.yb-page a:hover,.yb-page span{background:var(--org);border-color:var(--org);color:#fff;}
.yb-phone-page{text-align:center;margin-top:30px;}
.yb-phone-page a,.yb-phone-page span{display:inline-block;min-width:34px;padding:8px 12px;margin:0 3px;border:1px solid var(--line);border-radius:4px;font-size:13px;color:#666;background:#fff;}

/* ---------------- slick 轮播核心 ---------------- */
.slick-slider{position:relative;display:block;box-sizing:border-box;-webkit-user-select:none;-moz-user-select:none;user-select:none;-webkit-touch-callout:none;touch-action:pan-y;}
.slick-list{position:relative;overflow:hidden;display:block;margin:0;padding:0;}
.slick-list:focus{outline:none;}
.slick-list.dragging{cursor:pointer;cursor:hand;}
.slick-slider .slick-track,.slick-slider .slick-list{-webkit-transform:translate3d(0,0,0);transform:translate3d(0,0,0);}
.slick-track{position:relative;top:0;left:0;display:block;}
.slick-track:before,.slick-track:after{display:table;content:'';}
.slick-track:after{clear:both;}
.slick-slide{display:none;float:left;height:100%;min-height:1px;}
.slick-slide img{display:block;}
.slick-slide.slick-loading img{display:none;}
.slick-slide.dragging img{pointer-events:none;}
.slick-initialized .slick-slide{display:block;}
.slick-arrow.slick-hidden{display:none;}
.slick-dots{position:absolute;bottom:-25px;display:block;width:100%;padding:0;margin:0;list-style:none;text-align:center;}
.slick-dots li{position:relative;display:inline-block;width:20px;height:20px;margin:0 5px;padding:0;cursor:pointer;}
.slick-dots li button{font-size:0;line-height:0;display:block;width:20px;height:20px;padding:5px;cursor:pointer;color:transparent;border:0;outline:none;background:transparent;}
.slick-dots li button:before{font-size:10px;line-height:20px;position:absolute;top:0;left:0;width:20px;height:20px;content:'•';text-align:center;opacity:.3;color:#000;}
.slick-dots li.slick-active button:before{opacity:1;color:#000;}

/* ---------------- 响应式 ---------------- */
@media (max-width:1249px){
  .yb-head-cta{display:none;}
}
@media (max-width:1099px){
  .yb-head-phone{display:none;}
  .yb-nav > ul > li > a{padding:0 12px;}
}
@media (max-width:991px){
  .yb-sol{min-height:0;padding:80px 0 70px;}
  .yb-hero .slick-slide img{height:780px;}
  .yb-sec{padding:60px 0;}
  .yb-sec-head .en{font-size:34px;}
  .yb-sec-head .cn{font-size:22px;}
  .yb-about-flex{-webkit-flex-direction:column;flex-direction:column;gap:40px;}
  .yb-about-rt{max-width:100%;-webkit-flex:none;flex:none;width:100%;}
  .yb-srv-grid{grid-template-columns:repeat(2,1fr);}
  .yb-case-grid{grid-template-columns:repeat(2,1fr);}
  .yb-news-grid{grid-template-columns:repeat(2,1fr);}
  .yb-foot-main{-webkit-flex-direction:column;flex-direction:column;gap:40px;}
  .yb-foot-contact{max-width:100%;}
  .yb-cta-card{-webkit-flex-direction:column;flex-direction:column;gap:36px;padding:36px 30px;}
  .yb-cta-lt{max-width:100%;}
  .yb-sol-tabs{grid-template-columns:repeat(2,1fr);}
  .yb-sol-head h2{font-size:30px;}
  .yb-sol-pane.on{-webkit-flex-direction:column;flex-direction:column;gap:20px;}
  .yb-sol-pane .num{font-size:72px;}
}
@media (max-width:767px){
  .yb-header-inner{display:none;}
  .yb-mob-head{display:-webkit-flex !important;display:flex !important;position:fixed;left:0;top:0;width:100%;z-index:100;-webkit-align-items:center;align-items:center;-webkit-justify-content:space-between;justify-content:space-between;height:60px;padding:0 16px;background:rgba(20,20,20,.95);}
  .yb-mob-head.scrolled{background:#101010;box-shadow:0 4px 16px rgba(0,0,0,.3);}
  .yb-mob-head .yb-logo{height:60px;margin:0;}
  .yb-mob-head .yb-logo img{max-height:38px;max-width:160px;}
  .yb-partners{padding:54px 0 58px;}
  .yb-partners h3{font-size:22px;}
  .yb-partners p{margin-top:12px;font-size:13px;padding:0 4px;}
  .yb-kehu{margin-top:30px;}
  .yb-kehu ul{grid-template-columns:repeat(3,1fr);}
  .yb-kehu ul li .lg{height:76px;}
  .yb-kehu ul li .lg img{width:80%;max-width:110px;}
  .yb-hero .slick-slide img{height:320px;-o-object-fit:cover;object-fit:cover;}
  .yb-sec{padding:50px 0;}
  .yb-sec-head .en{font-size:28px;}
  .yb-sec-head .cn{font-size:19px;}
  .yb-srv-grid,.yb-news-grid{grid-template-columns:1fr;}
  .yb-case-grid{grid-template-columns:repeat(2,1fr);gap:6px;}
  .yb-case-item .pimg{height:150px;}
  .yb-case-item .pt{padding:10px 12px;}
  .yb-case-item .pt h3{font-size:13px;max-width:60%;}
  .yb-case-item .pt span{display:none;}
  .yb-stats b{font-size:30px;}
  .yb-stats{-webkit-flex-wrap:wrap;flex-wrap:wrap;}
  .yb-stats li{-webkit-flex:0 0 50%;flex:0 0 50%;margin-bottom:22px;}
  .yb-news-top{-webkit-flex-direction:column;flex-direction:column;-webkit-align-items:flex-start;align-items:flex-start;gap:16px;}
  .yb-news-tabs{gap:6px 18px;}
  .yb-sol{padding:64px 0 50px;}
  .yb-sol-head h2{font-size:24px;}
  .yb-sol-tabs{grid-template-columns:repeat(2,1fr);gap:12px;}
  .yb-sol-tabs a b{font-size:14px;}
  .yb-sol-pane{padding:28px 22px;}
  .yb-sol-pane .num{font-size:56px;}
  .yb-detail-main,.yb-single-box{padding:26px 20px;}
  .yb-dt-title{font-size:20px;}
  .yb-page-banner{padding:74px 0 62px;}
  .yb-page-banner h2{font-size:24px;}
  .yb-page-banner h2 em{font-size:28px;}
  .yb-foot-top-in{-webkit-flex-direction:column;flex-direction:column;height:auto;padding:20px 0;gap:14px;}
  .yb-foot-nav{-webkit-flex-wrap:wrap;flex-wrap:wrap;gap:12px 20px;-webkit-justify-content:center;justify-content:center;}
  .yb-foot-adv ul{grid-template-columns:repeat(2,1fr);}
  .yb-cta-form{grid-template-columns:1fr;}
  .yb-gotop{right:14px;bottom:74px;}
  .yb-mobbar{display:-webkit-flex !important;display:flex !important;position:fixed;left:0;bottom:0;width:100%;background:#1c1c1c;z-index:95;box-shadow:0 -4px 14px rgba(0,0,0,.25);}
  .yb-mobbar a{-webkit-flex:1;flex:1;text-align:center;color:#ccc;padding:7px 0 6px;}
  .yb-mobbar a i{display:block;font-style:normal;font-size:19px;line-height:1.3;}
  .yb-mobbar a span{display:block;font-size:11px;}
  .yb-mobbar a:hover{color:var(--org);}
  body{padding-bottom:52px;}
}


/* ---------------- 底部悬浮留言条 (参考 cebest.com, 提交到后台留言) ---------------- */
.yb-bar{position:fixed;left:0;bottom:0;width:100%;z-index:96;background:linear-gradient(90deg,#2d2d2d,#141414);box-shadow:0 -8px 26px rgba(0,0,0,.4);overflow:hidden;}
.yb-bar:before{content:"";position:absolute;left:-40px;top:-70px;width:230px;height:230px;border-radius:50%;background:rgba(255,255,255,.05);}
.yb-bar:after{content:"";position:absolute;left:130px;bottom:-100px;width:190px;height:190px;border-radius:50%;background:rgba(255,255,255,.03);}
.yb-bar .in{position:relative;z-index:1;width:92%;max-width:1400px;margin:0 auto;display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-flex-direction:row;flex-direction:row;gap:16px;padding:13px 0;}
.yb-bar .tt{-webkit-flex:none;flex:none;font-size:22px;font-weight:800;color:#fff;letter-spacing:1px;white-space:nowrap;}
.yb-bar .tt em{font-style:normal;color:var(--org-lt);}
.yb-bar form{display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-flex-direction:row;flex-direction:row;gap:14px;margin-left:auto;}
.yb-bar input{width:230px;border:0;border-radius:4px;padding:12px 14px;font-size:14px;color:#333;background:#fff;outline:none;box-shadow:inset 0 1px 3px rgba(0,0,0,.08);font-family:inherit;-webkit-box-sizing:border-box;box-sizing:border-box;}
.yb-bar input::-webkit-input-placeholder{color:#aaa;}
.yb-bar input::placeholder{color:#aaa;}
.yb-bar input:focus{box-shadow:0 0 0 3px rgba(255,255,255,.35);}
.yb-bar .btn{-webkit-flex:none;flex:none;border:0;border-radius:24px;padding:12px 34px;font-size:15px;font-weight:700;letter-spacing:2px;color:#fff;background:linear-gradient(90deg,#ff8a00,#ff5e00);cursor:pointer;box-shadow:0 6px 16px rgba(255,102,0,.3);-webkit-transition:all .3s;transition:all .3s;white-space:nowrap;font-family:inherit;}
.yb-bar .btn:hover{-webkit-transform:translateY(-2px);transform:translateY(-2px);box-shadow:0 10px 22px rgba(255,102,0,.4);filter:brightness(1.06);}
.yb-bar-h{height:70px;}
@media (max-width:767px){
  .yb-bar{bottom:52px;}
  .yb-bar .in{-webkit-flex-wrap:wrap;flex-wrap:wrap;gap:8px;padding:9px 0 10px;-webkit-justify-content:center;justify-content:center;}
  .yb-bar .tt{width:100%;text-align:center;font-size:15px;letter-spacing:0;}
  .yb-bar form{margin-left:0;width:100%;gap:8px;}
  .yb-bar input{-webkit-flex:1;flex:1;min-width:0;width:auto;padding:9px 10px;font-size:13px;}
  .yb-bar .btn{padding:9px 16px;font-size:14px;letter-spacing:1px;}
  .yb-bar-h{height:158px;}
}

/* =========================================================
   内页增强组件：产品服务 / 关于我们 / 联系方式
   ========================================================= */
/* 通用小节头 */
.yb-mh{display:-webkit-flex;display:flex;-webkit-align-items:flex-end;align-items:flex-end;-webkit-justify-content:space-between;justify-content:space-between;gap:36px;margin-bottom:44px;-webkit-flex-wrap:wrap;flex-wrap:wrap;}
.yb-mh .en{display:block;font-size:42px;font-weight:800;font-style:italic;color:#f1f1f1;line-height:1;text-transform:uppercase;font-family:Arial,"Microsoft YaHei",sans-serif;}
.yb-mh h2{font-size:30px;font-weight:800;color:#111;letter-spacing:1px;margin-top:8px;line-height:1.35;}
.yb-mh .desc{margin-top:12px;font-size:14px;color:#8b8b8b;line-height:1.9;max-width:560px;}
.yb-mh .rt{font-size:14px;color:#9a9a9a;line-height:1.95;max-width:460px;}
.yb-mh.on-dark .en{color:#2c2c2c;}
.yb-mh.on-dark h2{color:#fff;}
.yb-mh.on-dark .desc,.yb-mh.on-dark .rt{color:#9a9a9a;}

/* ---------------- 产品服务页 ---------------- */
.yb-sv-lead{padding:74px 0 12px;display:-webkit-flex;display:flex;-webkit-align-items:flex-end;align-items:flex-end;-webkit-justify-content:space-between;justify-content:space-between;gap:50px;-webkit-flex-wrap:wrap;flex-wrap:wrap;}
.yb-sv-lead h2{font-size:38px;font-weight:800;line-height:1.3;letter-spacing:1px;color:#111;}
.yb-sv-lead h2 em{font-style:normal;color:var(--org);}
.yb-sv-lead .rt{max-width:600px;font-size:14px;color:#888;line-height:2;border-left:3px solid var(--org);padding-left:22px;}
.yb-svgrp{display:grid;grid-template-columns:300px 1fr;gap:56px;padding:58px 0;border-top:1px solid var(--line);}
.yb-svgrp:first-of-type{border-top:0;padding-top:38px;}
.yb-svgrp .lt .no{display:inline-block;font-size:12px;color:#fff;background:var(--org);border-radius:20px;padding:4px 14px;letter-spacing:2px;font-weight:700;}
.yb-svgrp .lt .en2{display:block;margin-top:20px;font-size:32px;font-weight:800;font-style:italic;color:#f0f0f0;text-transform:uppercase;line-height:1;}
.yb-svgrp .lt h3{font-size:26px;font-weight:800;color:#111;margin-top:10px;letter-spacing:1px;}
.yb-svgrp .lt .dsc{margin-top:16px;font-size:14px;color:#8a8a8a;line-height:2;}
.yb-svcards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.yb-svcard{display:block;position:relative;background:#fff;border:1px solid var(--line);border-radius:10px;padding:26px 24px 22px;overflow:hidden;-webkit-transition:all .35s;transition:all .35s;}
.yb-svcard:before{content:"";position:absolute;left:0;top:0;width:3px;height:0;background:-webkit-linear-gradient(top,#ff8a00,#ff5e00);background:linear-gradient(180deg,#ff8a00,#ff5e00);-webkit-transition:height .35s;transition:height .35s;}
.yb-svcard:hover{border-color:rgba(255,102,0,.4);box-shadow:0 18px 36px rgba(255,102,0,.13);-webkit-transform:translateY(-4px);transform:translateY(-4px);}
.yb-svcard:hover:before{height:100%;}
.yb-svcard .ic{width:42px;height:42px;border-radius:10px;background:#fff5ef;color:var(--org);display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:center;justify-content:center;font-size:14px;font-weight:800;font-style:italic;letter-spacing:0;}
.yb-svcard h4{margin-top:16px;font-size:17px;font-weight:700;color:#111;}
.yb-svcard p{margin-top:9px;font-size:13px;color:#8e8e8e;line-height:1.85;min-height:46px;}
.yb-svcard .go{display:inline-block;margin-top:6px;font-size:12px;color:#cfcfcf;letter-spacing:1px;}
.yb-svcard:hover .go{color:var(--org);}
.yb-flow{background:var(--gray2);padding:84px 0;}
.yb-flow-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;}
.yb-flow-item{position:relative;background:#fff;border:1px solid #ededed;border-radius:10px;padding:26px 20px 22px;-webkit-transition:all .3s;transition:all .3s;}
.yb-flow-item .n{font-size:30px;font-weight:800;font-style:italic;color:#f0f0f0;line-height:1}
.yb-flow-item h4{margin-top:10px;font-size:16px;font-weight:700;color:#111;}
.yb-flow-item p{margin-top:8px;font-size:12px;color:#9a9a9a;line-height:1.8;}
.yb-flow-item:hover{border-color:rgba(255,102,0,.45);box-shadow:0 14px 30px rgba(255,102,0,.1);-webkit-transform:translateY(-3px);transform:translateY(-3px);}
.yb-flow-item:hover .n{color:rgba(255,102,0,.25);}
.yb-why{background:var(--dark);padding:88px 0;}
.yb-why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.07);margin-top:8px;}
.yb-why-item{background:var(--dark);padding:34px 28px 30px;-webkit-transition:background .3s;transition:background .3s;}
.yb-why-item:hover{background:#232323;}
.yb-why-item i{display:block;width:26px;height:3px;background:var(--org);margin-bottom:20px;font-style:normal;}
.yb-why-item b{display:block;font-size:18px;color:#fff;font-weight:700;}
.yb-why-item p{margin-top:12px;font-size:13px;color:#9a9a9a;line-height:1.95;}

/* ---------------- 关于我们页 ---------------- */
.yb-ab-intro{padding:80px 0 0;}
.yb-ab-grid{display:grid;grid-template-columns:330px 1fr;gap:64px;}
.yb-ab-grid .lt .en{display:block;font-size:42px;font-weight:800;font-style:italic;color:#f1f1f1;line-height:1;text-transform:uppercase;font-family:Arial,sans-serif;}
.yb-ab-grid .lt h2{margin-top:10px;font-size:32px;font-weight:800;line-height:1.4;color:#111;}
.yb-ab-grid .lt .sub{margin-top:16px;font-size:14px;color:var(--org);letter-spacing:3px;}
.yb-ab-grid .lt .dsc{margin-top:22px;font-size:13px;color:#9a9a9a;line-height:2;}
.yb-ab-txt p{font-size:15px;color:#555;line-height:2.2;margin-bottom:18px;text-align:justify;}
.yb-ab-txt p:last-child{margin-bottom:0;}
.yb-ab-txt p b{color:#111;font-weight:700;}
.yb-ab-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-top:54px;}
.yb-ab-stats div{background:#fff;padding:34px 18px;text-align:center;-webkit-transition:background .3s;transition:background .3s;}
.yb-ab-stats div:hover{background:#fffaf6;}
.yb-ab-stats b{display:block;font-size:38px;font-weight:800;color:#111;line-height:1;font-style:italic;}
.yb-ab-stats b i{font-style:normal;color:var(--org);font-size:17px;margin-left:3px;}
.yb-ab-stats span{display:block;margin-top:12px;font-size:13px;color:#9a9a9a;letter-spacing:1px;}
.yb-ab-sv{padding:70px 0 0;}
.yb-ab-chips{display:-webkit-flex;display:flex;-webkit-flex-wrap:wrap;flex-wrap:wrap;gap:12px;margin-top:30px;}
.yb-ab-chips a{padding:12px 28px;border:1px solid var(--line);border-radius:24px;font-size:14px;color:#444;background:#fff;}
.yb-ab-chips a:hover{background:var(--org);border-color:var(--org);color:#fff;box-shadow:0 10px 22px rgba(255,102,0,.26);}
.yb-std{padding:84px 0;background:var(--gray2);}
.yb-std-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.yb-std-card{position:relative;background:#fff;border:1px solid #ededed;border-radius:10px;padding:28px 24px;-webkit-transition:all .35s;transition:all .35s;}
.yb-std-card .idx{position:absolute;right:22px;top:20px;font-size:13px;color:#e0e0e0;font-weight:700;font-style:italic;}
.yb-std-card h4{font-size:16px;font-weight:700;color:#111;padding-right:34px;}
.yb-std-card p{margin-top:10px;font-size:13px;color:#8e8e8e;line-height:1.85;}
.yb-std-card:hover{border-color:rgba(255,102,0,.42);box-shadow:0 16px 32px rgba(255,102,0,.11);-webkit-transform:translateY(-3px);transform:translateY(-3px);}
.yb-ab-partners{background:#fff;padding:40px 0 20px;}

/* ---------------- 联系方式页 ---------------- */
.yb-ct-head{padding:60px 0 0;}
.yb-ct-hero{background:var(--dark);padding:150px 0 96px;position:relative;overflow:hidden;}
.yb-ct-hero:before{content:"";position:absolute;right:-120px;top:-140px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(255,102,0,.22),rgba(255,102,0,0) 65%);}
.yb-ct-hero .container{position:relative;z-index:2;}
.yb-ct-hero h2{font-size:36px;color:#fff;font-weight:800;letter-spacing:1px;}
.yb-ct-hero .slogan{margin-top:14px;font-size:14px;color:#9a9a9a;letter-spacing:2px;}
.yb-ct-hero .telbox{margin-top:36px;display:-webkit-flex;display:flex;-webkit-align-items:flex-end;align-items:flex-end;gap:14px;-webkit-flex-wrap:wrap;flex-wrap:wrap;}
.yb-ct-hero .telbox span{font-size:14px;color:#bbb;padding-bottom:10px;letter-spacing:1px;}
.yb-ct-hero .telbox a{font-size:46px;font-weight:800;color:var(--org);line-height:1;letter-spacing:1px;font-style:italic;}
.yb-ct-hero .telbox a:hover{color:var(--org-lt);}
.yb-ct-hero .yb-crumb{margin-top:28px;}
.yb-ct-body{padding:72px 0 90px;}
.yb-ct-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;-webkit-align-items:start;align-items:start;}
.yb-ct-info li{display:-webkit-flex;display:flex;gap:16px;padding:22px 0;border-bottom:1px dashed #e6e6e6;}
.yb-ct-info li .k{-webkit-flex:none;flex:none;width:104px;font-size:14px;color:#a0a0a0;letter-spacing:1px;}
.yb-ct-info li .v{font-size:17px;font-weight:600;color:#111;line-height:1.7;}
.yb-ct-info li .v.small{font-size:15px;font-weight:400;color:#555;line-height:1.95;}
.yb-ct-info li .v a:hover{color:var(--org);}
.yb-ct-branches{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:34px;}
.yb-ct-branch{background:#fff;border:1px solid var(--line);border-radius:12px;padding:26px 24px;-webkit-transition:all .3s;transition:all .3s;}
.yb-ct-branch:hover{border-color:rgba(255,102,0,.42);box-shadow:0 16px 32px rgba(255,102,0,.1);}
.yb-ct-branch h4{display:-webkit-flex;display:flex;-webkit-justify-content:space-between;justify-content:space-between;-webkit-align-items:baseline;align-items:baseline;font-size:17px;font-weight:700;color:#111;}
.yb-ct-branch h4 em{font-style:normal;font-size:11px;color:#d5d5d5;letter-spacing:2px;font-weight:600;}
.yb-ct-branch p{margin-top:12px;font-size:13px;color:#8a8a8a;line-height:1.95;}
.yb-ct-branch p b{color:#333;font-weight:600;}
.yb-ct-form{background:#fff;border:1px solid var(--line);border-radius:14px;padding:36px 32px 30px;box-shadow:0 22px 50px rgba(0,0,0,.07);}
.yb-ct-form h3{font-size:22px;font-weight:800;color:#111;}
.yb-ct-form .tip{margin-top:10px;font-size:13px;color:#9a9a9a;line-height:1.8;}
.yb-ct-form .row2{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.yb-ct-form input,.yb-ct-form select,.yb-ct-form textarea{width:100%;border:1px solid #e6e6e6;border-radius:8px;background:#fafafa;padding:12px 14px;font-size:14px;color:#333;margin-top:12px;font-family:inherit;-webkit-box-sizing:border-box;box-sizing:border-box;outline:none;-webkit-transition:all .25s;transition:all .25s;}
.yb-ct-form textarea{resize:none;line-height:1.8;}
.yb-ct-form input:focus,.yb-ct-form select:focus,.yb-ct-form textarea:focus{border-color:var(--org);background:#fff;box-shadow:0 0 0 3px rgba(255,102,0,.1);}
.yb-ct-form .sub{width:100%;margin-top:18px;border:0;border-radius:26px;padding:13px;background:-webkit-linear-gradient(90deg,#ff8a00,#ff5e00);background:linear-gradient(90deg,#ff8a00,#ff5e00);color:#fff;font-size:15px;font-weight:600;letter-spacing:3px;cursor:pointer;box-shadow:0 10px 24px rgba(255,102,0,.32);-webkit-transition:all .3s;transition:all .3s;font-family:inherit;}
.yb-ct-form .sub:hover{-webkit-transform:translateY(-2px);transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,102,0,.42);}
.yb-ct-map{margin-top:70px;position:relative;height:420px;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#eef0f2 url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60'%3E%3Cpath d='M60 0H0v60' fill='none' stroke='%23dfe3e6' stroke-width='1'/%3E%3C/svg%3E");}
.yb-ct-map .pin{position:absolute;left:50%;top:46%;-webkit-transform:translate(-50%,-100%);transform:translate(-50%,-100%);text-align:center;}
.yb-ct-map .pin b{display:block;width:54px;height:54px;margin:0 auto;border-radius:50% 50% 50% 0;-webkit-transform:rotate(-45deg);transform:rotate(-45deg);background:-webkit-linear-gradient(135deg,#ff8a00,#ff5e00);background:linear-gradient(135deg,#ff8a00,#ff5e00);box-shadow:0 14px 26px rgba(255,102,0,.4);}
.yb-ct-map .pin b:after{content:"";position:absolute;left:50%;top:50%;width:16px;height:16px;margin:-8px 0 0 -8px;border-radius:50%;background:#fff;}
.yb-ct-map .pin span{display:block;margin-top:14px;font-size:13px;color:#555;background:#fff;border-radius:20px;padding:7px 18px;box-shadow:0 8px 20px rgba(0,0,0,.12);white-space:nowrap;}
.yb-ct-map .card{position:absolute;left:40px;bottom:40px;background:#fff;border-radius:12px;padding:26px 28px;box-shadow:0 20px 44px rgba(0,0,0,.14);max-width:360px;}
.yb-ct-map .card h4{font-size:18px;font-weight:800;color:#111;}
.yb-ct-map .card p{margin-top:10px;font-size:13px;color:#8a8a8a;line-height:1.9;}
.yb-ct-map .card a{display:inline-block;margin-top:16px;padding:9px 22px;border-radius:20px;background:var(--org);color:#fff;font-size:13px;}
.yb-ct-map .card a:hover{background:var(--org-lt);color:#fff;}

/* 内页 CTA 深色条 */
.yb-band{background:var(--dark);padding:66px 0;position:relative;overflow:hidden;}
.yb-band:before{content:"";position:absolute;left:-80px;bottom:-160px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,102,0,.16),rgba(255,102,0,0) 65%);}
.yb-band .in{position:relative;z-index:2;display:-webkit-flex;display:flex;-webkit-align-items:center;align-items:center;-webkit-justify-content:space-between;justify-content:space-between;gap:40px;-webkit-flex-wrap:wrap;flex-wrap:wrap;}
.yb-band h3{font-size:28px;color:#fff;font-weight:800;line-height:1.4;}
.yb-band p{margin-top:12px;font-size:14px;color:#9a9a9a;}
.yb-band .acts{display:-webkit-flex;display:flex;gap:14px;-webkit-flex-wrap:wrap;flex-wrap:wrap;}
.yb-band .acts a{padding:13px 32px;border-radius:26px;font-size:14px;letter-spacing:1px;}
.yb-band .acts a.one{background:-webkit-linear-gradient(90deg,#ff8a00,#ff5e00);background:linear-gradient(90deg,#ff8a00,#ff5e00);color:#fff;box-shadow:0 10px 24px rgba(255,102,0,.35);}
.yb-band .acts a.one:hover{-webkit-transform:translateY(-2px);transform:translateY(-2px);color:#fff;}
.yb-band .acts a.two{border:1px solid rgba(255,255,255,.28);color:#fff;}
.yb-band .acts a.two:hover{border-color:var(--org);color:var(--org);}

@media (max-width:1249px){
  .yb-svgrp{grid-template-columns:1fr;gap:28px;}
  .yb-svcards{grid-template-columns:repeat(3,1fr);}
  .yb-flow-grid{grid-template-columns:repeat(3,1fr);}
  .yb-ab-grid{grid-template-columns:1fr;gap:30px;}
  .yb-std-grid{grid-template-columns:repeat(3,1fr);}
  .yb-ct-grid{grid-template-columns:1fr;gap:40px;}
  .yb-ct-hero .telbox a{font-size:38px;}
}
@media (max-width:991px){
  .yb-why-grid{grid-template-columns:repeat(2,1fr);}
  .yb-ab-stats{grid-template-columns:repeat(2,1fr);}
  .yb-svcards{grid-template-columns:repeat(2,1fr);}
  .yb-std-grid{grid-template-columns:repeat(2,1fr);}
  .yb-sv-lead h2{font-size:30px;}
  .yb-mh .en{font-size:34px;}
}
@media (max-width:767px){
  .yb-sv-lead{padding:48px 0 8px;}
  .yb-sv-lead h2{font-size:23px;}
  .yb-sv-lead .rt{padding-left:16px;font-size:13px;}
  .yb-svgrp{padding:38px 0;}
  .yb-svgrp .lt .en2{font-size:24px;}
  .yb-svgrp .lt h3{font-size:21px;}
  .yb-svcards{grid-template-columns:1fr;gap:12px;}
  .yb-svcard p{min-height:0;}
  .yb-flow{padding:54px 0;}
  .yb-flow-grid{grid-template-columns:repeat(2,1fr);}
  .yb-why{padding:56px 0;}
  .yb-why-grid{grid-template-columns:1fr;}
  .yb-ab-intro{padding:48px 0 0;}
  .yb-ab-grid .lt h2{font-size:23px;}
  .yb-ab-txt p{font-size:14px;line-height:2;}
  .yb-ab-stats b{font-size:28px;}
  .yb-ab-stats div{padding:24px 10px;}
  .yb-ab-sv{padding:50px 0 0;}
  .yb-ab-chips{gap:8px;}
  .yb-ab-chips a{padding:9px 18px;font-size:13px;}
  .yb-std{padding:54px 0;}
  .yb-std-grid{grid-template-columns:1fr;}
  .yb-ct-hero{padding:110px 0 60px;}
  .yb-ct-hero h2{font-size:24px;}
  .yb-ct-hero .telbox a{font-size:30px;}
  .yb-ct-grid{grid-template-columns:1fr;gap:34px;}
  .yb-ct-branches{grid-template-columns:1fr;}
  .yb-ct-form{padding:26px 20px 22px;}
  .yb-ct-form .row2{grid-template-columns:1fr;}
  .yb-ct-map{height:340px;margin-top:44px;}
  .yb-ct-map .card{left:16px;right:16px;bottom:16px;max-width:none;padding:20px;}
  .yb-ct-map .pin{top:34%;}
  .yb-band{padding:46px 0;}
  .yb-band h3{font-size:21px;}
  .yb-mh{-webkit-align-items:flex-start;align-items:flex-start;}
  .yb-mh h2{font-size:22px;}
}