/* =====================================================================
   Sunbo Pump - Enterprise Design System
   Chinese business / high-end industrial (centrifugal & slurry pumps)
   Layered on top of Bootstrap (style.css). All class names are prefixed
   with "sb-" to avoid conflicts. ASCII only.
   ===================================================================== */

:root{
  --sb-navy-900:#0a2240;
  --sb-navy-800:#0f2c52;
  --sb-navy-700:#14365f;
  --sb-blue-600:#1b4f8a;
  --sb-blue-500:#2563a8;
  --sb-blue-300:#5b8fc9;
  --sb-gold-600:#b8893b;
  --sb-gold-500:#c8a45c;
  --sb-gold-400:#dcbb7e;
  --sb-ink:#1f2733;
  --sb-muted:#5b6675;
  --sb-line:#e6ebf2;
  --sb-soft:#f4f7fb;
  --sb-soft-2:#eef3f9;
  --sb-white:#ffffff;
  --sb-radius:8px;
  --sb-shadow:0 6px 24px rgba(15,44,82,.10);
  --sb-shadow-hi:0 14px 40px rgba(15,44,82,.18);
  --sb-font:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Source Han Sans CN","WenQuanYi Micro Hei",sans-serif;
}

/* ---------- Base typography override ---------- */
body{
  font-family:var(--sb-font) !important;
  font-size:16px !important;
  line-height:1.7 !important;
  color:var(--sb-ink);
  background:#fff;
  letter-spacing:.2px;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--sb-font) !important;
  font-weight:700;
  color:var(--sb-navy-800);
  line-height:1.3;
}
a{color:var(--sb-blue-600);text-decoration:none;transition:color .2s,background .2s;}
a:hover{color:var(--sb-gold-600);text-decoration:none;}
p{margin:0 0 14px;color:var(--sb-muted);}
/* NOTE: Bootstrap sets container width:1030px at >=1200px; width must be reset,
   otherwise max-width is ignored and content stays 1030px wide. */
.container{width:auto;max-width:1320px;}

/* ---------- Top utility bar ---------- */
.sb-topbar{
  background:var(--sb-navy-900);
  color:#cdd8e6;
  font-size:13px;
  line-height:40px;
}
.sb-topbar .sb-topbar__inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;}
.sb-topbar a{color:#cdd8e6;}
.sb-topbar a:hover{color:var(--sb-gold-400);}
.sb-topbar .sb-topbar__contact span{margin-right:18px;display:inline-block;}
.sb-topbar .sb-topbar__contact i{color:var(--sb-gold-500);margin-right:6px;}
.sb-topbar .sb-topbar__links a{margin-left:14px;}

/* ---------- Site header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--sb-line);
  box-shadow:0 2px 14px rgba(15,44,82,.06);
  backdrop-filter:saturate(160%) blur(6px);
}
.site-header__inner{
  display:flex;align-items:center;justify-content:space-between;
  height:84px;
}
.site-logo{display:flex;align-items:center;gap:12px;}
.site-logo img{height:54px;width:auto;}
.site-logo__text{
  display:flex;flex-direction:column;line-height:1.15;font-weight:700;
  color:var(--sb-navy-800);font-size:22px;
}
.site-logo__text small{font-size:12px;font-weight:400;color:var(--sb-muted);letter-spacing:1px;}

.site-nav{display:flex;align-items:center;}
.site-nav > ul{
  display:flex;align-items:center;list-style:none;margin:0;padding:0;gap:2px;
}
.site-nav > ul > li{position:relative;}
.site-nav > ul > li > a{
  display:block;padding:30px 14px;color:var(--sb-navy-800);font-size:15.5px;font-weight:600;
  position:relative;white-space:nowrap;
}
.site-nav > ul > li > a::after{
  content:"";position:absolute;left:16px;right:16px;bottom:22px;height:2px;
  background:var(--sb-gold-500);transform:scaleX(0);transform-origin:center;transition:transform .25s;
}
.site-nav > ul > li:hover > a{color:var(--sb-blue-600);}
.site-nav > ul > li:hover > a::after,
.site-nav > ul > li.is-active > a::after{transform:scaleX(1);}
.site-nav > ul > li.is-active > a{color:var(--sb-blue-600);}

/* dropdowns */
.site-nav__sub{
  position:absolute;left:0;top:100%;min-width:210px;
  background:#fff;border:1px solid var(--sb-line);border-top:3px solid var(--sb-blue-600);
  box-shadow:var(--sb-shadow);list-style:none;margin:0;padding:6px 0;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:all .2s;z-index:999;
}
.site-nav__sub li a{
  display:block;padding:10px 20px;color:var(--sb-ink);font-size:15px;font-weight:500;
  border-left:3px solid transparent;
}
.site-nav__sub li a:hover{background:var(--sb-soft);color:var(--sb-blue-600);border-left-color:var(--sb-gold-500);}
.has-menu:hover .site-nav__sub{opacity:1;visibility:visible;transform:translateY(0);}

/* search */
.site-nav__search{margin-left:14px;}
.site-nav__search form{display:flex;align-items:center;border:1px solid var(--sb-line);border-radius:30px;overflow:hidden;background:var(--sb-soft);}
.site-nav__search input{
  border:0;background:transparent;padding:8px 14px;width:150px;outline:none;font-family:var(--sb-font);font-size:14px;color:var(--sb-ink);
}
.site-nav__search button{
  border:0;background:var(--sb-blue-600);color:#fff;padding:8px 14px;cursor:pointer;transition:background .2s;
}
.site-nav__search button:hover{background:var(--sb-navy-800);}

/* mobile toggle */
.site-nav__toggle{
  display:none;background:none;border:1px solid var(--sb-line);border-radius:6px;
  width:44px;height:40px;color:var(--sb-navy-800);font-size:20px;cursor:pointer;
}

/* ---------- Buttons ---------- */
.sb-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 26px;border-radius:30px;font-size:15px;font-weight:600;font-family:var(--sb-font);
  border:1px solid transparent;cursor:pointer;transition:all .25s;letter-spacing:1px;
}
.sb-btn--primary{background:var(--sb-blue-600);color:#fff;box-shadow:0 6px 18px rgba(27,79,138,.28);}
.sb-btn--primary:hover{background:var(--sb-navy-800);color:#fff;transform:translateY(-2px);box-shadow:0 10px 26px rgba(15,44,82,.32);}
.sb-btn--gold{background:var(--sb-gold-500);color:#fff;box-shadow:0 6px 18px rgba(184,137,59,.30);}
.sb-btn--gold:hover{background:var(--sb-gold-600);color:#fff;transform:translateY(-2px);}
.sb-btn--ghost{background:transparent;border-color:#fff;color:#fff;}
.sb-btn--ghost:hover{background:#fff;color:var(--sb-navy-800);}
.sb-btn--outline{background:#fff;border-color:var(--sb-line);color:var(--sb-navy-800);}
.sb-btn--outline:hover{border-color:var(--sb-blue-600);color:var(--sb-blue-600);}

/* ---------- Section heading ---------- */
.sb-section{padding:64px 0;}
.sb-section--soft{background:var(--sb-soft);}
.sb-section--navy{background:linear-gradient(135deg,var(--sb-navy-900),var(--sb-blue-600));color:#fff;}
.sb-head{text-align:center;max-width:760px;margin:0 auto 44px;}
.sb-head__eyebrow{color:var(--sb-gold-600);font-weight:600;letter-spacing:3px;text-transform:uppercase;font-size:13px;margin-bottom:10px;display:inline-block;}
.sb-head__title{font-size:30px;margin:0 0 14px;position:relative;padding-bottom:18px;}
.sb-head__title::after{content:"";position:absolute;left:50%;bottom:0;width:64px;height:3px;background:var(--sb-gold-500);transform:translateX(-50%);border-radius:2px;}
.sb-head__desc{color:var(--sb-muted);font-size:16px;}
.sb-section--navy .sb-head__title{color:#fff;}
.sb-section--navy .sb-head__desc{color:#cdd8e6;}

/* ---------- Hero ---------- */
.sb-hero{
  position:relative;overflow:hidden;
  background:radial-gradient(1200px 500px at 80% -10%,rgba(37,99,168,.55),transparent 60%),
             linear-gradient(135deg,var(--sb-navy-900) 0%,var(--sb-navy-700) 55%,var(--sb-blue-600) 100%);
  color:#fff;
}
.sb-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:46px 46px;opacity:.5;mask-image:radial-gradient(700px 400px at 70% 30%,#000,transparent);
}
.sb-hero__inner{position:relative;display:flex;align-items:center;gap:40px;padding:96px 0 104px;flex-wrap:wrap;}
.sb-hero__text{flex:1 1 460px;}
.sb-hero__text h1{color:#fff;font-size:46px;line-height:1.2;margin:0 0 18px;}
.sb-hero__text h1 span{color:var(--sb-gold-400);}
.sb-hero__text p{color:#d6e2f2;font-size:18px;margin-bottom:30px;max-width:540px;}
.sb-hero__tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.sb-hero__tags span{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);padding:6px 16px;border-radius:30px;font-size:14px;}
.sb-hero__media{flex:0 1 440px;text-align:center;}
.sb-hero__media img{max-width:100%;filter:drop-shadow(0 30px 50px rgba(0,0,0,.45));border-radius:12px;}
.sb-hero__cta{display:flex;gap:14px;flex-wrap:wrap;}

/* home slider restyle (keep Bootstrap carousel markup) */
.home-slider{background:linear-gradient(135deg,var(--sb-navy-900),var(--sb-blue-600));}
.home-slider .carousel-inner > .item{height:490px;padding:80px 0 0;display:none;align-items:center;color:#fff;}
.home-slider .carousel-inner > .item.active{display:flex;}
.home-slider .item h1{color:#fff;font-size:44px;margin-bottom:18px;}
.home-slider .item h1 .text-blue{color:var(--sb-gold-400);}
.home-slider .item h1 .text-red{color:#ff8a80;}
.home-slider .item h4{color:#d6e2f2;font-size:20px;margin:6px 0;font-weight:500;}
.home-slider .item h4 span{display:inline-block;padding:4px 14px;border-left:3px solid var(--sb-gold-500);}
.home-slider .carousel-indicators{bottom:24px;}
.home-slider .carousel-indicators li{border-color:#fff;background:rgba(255,255,255,.3);width:12px;height:12px;border-radius:50%;}
.home-slider .carousel-indicators li.active{background:var(--sb-gold-500);border-color:var(--sb-gold-500);}
.carousel-arrow{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;line-height:48px;text-align:center;background:rgba(255,255,255,.14);color:#fff;border-radius:50%;z-index:5;transition:background .2s;}
.carousel-arrow:hover{background:var(--sb-gold-500);color:#fff;}

/* ---------- Feature / advantage cards ---------- */
.sb-feature{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.sb-feature__card{
  background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius);padding:30px 26px;
  transition:transform .25s,box-shadow .25s,border-color .25s;position:relative;overflow:hidden;
}
.sb-feature__card::before{content:"";position:absolute;left:0;top:0;width:4px;height:100%;background:var(--sb-blue-600);transform:scaleY(0);transform-origin:top;transition:transform .3s;}
.sb-feature__card:hover{transform:translateY(-6px);box-shadow:var(--sb-shadow-hi);border-color:transparent;}
.sb-feature__card:hover::before{transform:scaleY(1);background:var(--sb-gold-500);}
.sb-feature__icon{width:56px;height:56px;border-radius:12px;background:var(--sb-soft);color:var(--sb-blue-600);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:18px;}
.sb-feature__card h4{font-size:19px;margin:0 0 10px;}
.sb-feature__card p{font-size:14px;margin:0;}

/* ---------- Product grid (category pages) ---------- */
.sb-prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.sb-prod-card{
  background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius);overflow:hidden;
  transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column;
}
.sb-prod-card:hover{transform:translateY(-6px);box-shadow:var(--sb-shadow-hi);}
.sb-prod-card__thumb{position:relative;height:182px;background:#fff;border-bottom:1px solid var(--sb-line);display:flex;align-items:center;justify-content:center;overflow:hidden;}
.sb-prod-card__thumb img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;padding:14px;transition:transform .4s;}
.sb-prod-card:hover .sb-prod-card__thumb img{transform:scale(1.06);}
.sb-prod-card__badge{position:absolute;top:12px;left:12px;background:var(--sb-blue-600);color:#fff;font-size:12px;padding:4px 10px;border-radius:20px;}
.sb-prod-card__body{padding:14px 14px 18px;display:flex;flex-direction:column;flex:1;}
.sb-prod-card__title{font-size:15.5px;font-weight:700;color:var(--sb-navy-800);margin:0 0 8px;line-height:1.45;}
.sb-prod-card__title a{color:inherit;}
.sb-prod-card__desc{font-size:13px;color:var(--sb-muted);flex:1;margin:0 0 14px;line-height:1.6;}
.sb-prod-card__more{font-size:14px;font-weight:600;color:var(--sb-blue-600);display:inline-flex;align-items:center;gap:6px;}
.sb-prod-card__more::after{content:"\2192";transition:transform .2s;}
.sb-prod-card:hover .sb-prod-card__more::after{transform:translateX(4px);}

/* ---------- Breadcrumb ---------- */
.sb-crumb{background:var(--sb-soft);border-bottom:1px solid var(--sb-line);padding:10px 0;font-size:14px;}
.sb-crumb a{color:var(--sb-muted);}
.sb-crumb a:hover{color:var(--sb-blue-600);}
.sb-crumb span{color:var(--sb-navy-800);margin:0 6px;}

/* ---------- Page hero (inner pages) ---------- */
.sb-pagehero{
  background:linear-gradient(135deg,var(--sb-navy-900),var(--sb-blue-600));color:#fff;padding:54px 0;
  position:relative;overflow:hidden;
}
.sb-pagehero::after{content:"";position:absolute;right:-60px;bottom:-60px;width:280px;height:280px;border:40px solid rgba(255,255,255,.05);border-radius:50%;}
.sb-pagehero h1{color:#fff;font-size:34px;margin:0 0 8px;}
.sb-pagehero p{color:#cdd8e6;margin:0;font-size:16px;}

/* ---------- Category side nav ---------- */
.sb-cat-layout{display:grid;grid-template-columns:260px 1fr;gap:36px;align-items:start;}
.sb-cat-nav{background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius);overflow:hidden;position:sticky;top:100px;}
.sb-cat-nav__title{background:var(--sb-navy-800);color:#fff;padding:14px 18px;font-size:16px;font-weight:700;}
.sb-cat-nav ul{list-style:none;margin:0;padding:6px 0;}
.sb-cat-nav > ul > li > a{display:block;padding:11px 18px;color:var(--sb-ink);font-weight:600;border-left:3px solid transparent;font-size:15px;}
.sb-cat-nav > ul > li > a:hover{background:var(--sb-soft);color:var(--sb-blue-600);border-left-color:var(--sb-gold-500);}
.sb-cat-nav ul ul{padding:0 0 6px;}
.sb-cat-nav ul ul li a{padding:8px 18px 8px 34px;font-weight:400;font-size:14px;color:var(--sb-muted);display:block;border-left:0;}
.sb-cat-nav ul ul li a:hover{color:var(--sb-blue-600);}
.sb-cat-nav li.is-current > a{background:var(--sb-soft);color:var(--sb-blue-600);border-left-color:var(--sb-gold-500);}

/* ---------- Tables ---------- */
.sb-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius);overflow:hidden;font-size:14px;}
.sb-table th{background:var(--sb-navy-800);color:#fff;text-align:left;padding:12px 16px;font-weight:600;}
.sb-table td{padding:11px 16px;border-top:1px solid var(--sb-line);color:var(--sb-muted);}
.sb-table tr:nth-child(even) td{background:var(--sb-soft);}
.sb-table td b,.sb-table td strong{color:var(--sb-ink);}

/* ---------- Product detail ---------- */
.sb-pd{display:grid;grid-template-columns:460px 1fr;gap:44px;align-items:start;}
.sb-pd__gallery .sb-pd__main{border:1px solid var(--sb-line);border-radius:var(--sb-radius);padding:18px;background:#fff;text-align:center;margin-bottom:14px;}
.sb-pd__gallery .sb-pd__main img{max-width:100%;}
.sb-pd__thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;}
.sb-pd__thumbs a{border:1px solid var(--sb-line);border-radius:6px;padding:6px;display:block;}
.sb-pd__thumbs a img{max-width:100%;}
.sb-pd__title{font-size:28px;margin:0 0 6px;color:var(--sb-navy-800);}
.sb-pd__sub{color:var(--sb-gold-600);font-weight:600;margin-bottom:18px;}
.sb-pd__meta{display:flex;gap:24px;flex-wrap:wrap;margin:18px 0;padding:16px 0;border-top:1px solid var(--sb-line);border-bottom:1px solid var(--sb-line);}
.sb-pd__meta div{font-size:14px;color:var(--sb-muted);}
.sb-pd__meta b{display:block;color:var(--sb-navy-800);font-size:18px;font-weight:700;}
.sb-pd__actions{display:flex;gap:12px;margin:22px 0;flex-wrap:wrap;}
.sb-pd__desc h3,.sb-pd__block h3{font-size:20px;margin:26px 0 12px;padding-left:12px;border-left:4px solid var(--sb-gold-500);}
.sb-pd__desc p{font-size:15px;line-height:1.9;}

/* ---------- News / blog list ---------- */
.sb-news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.sb-news-card{display:flex;gap:18px;background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius);padding:18px;transition:box-shadow .25s,transform .25s;}
.sb-news-card:hover{box-shadow:var(--sb-shadow);transform:translateY(-4px);}
.sb-news-card__date{flex:0 0 64px;text-align:center;background:var(--sb-navy-800);color:#fff;border-radius:8px;padding:10px 0;align-self:flex-start;}
.sb-news-card__date b{display:block;font-size:24px;line-height:1;}
.sb-news-card__date span{font-size:12px;opacity:.8;}
.sb-news-card__body h4{font-size:17px;margin:0 0 8px;}
.sb-news-card__body h4 a{color:var(--sb-navy-800);}
.sb-news-card__body p{font-size:13px;margin:0;}

/* ---------- CTA band ---------- */
.sb-cta{background:linear-gradient(135deg,var(--sb-navy-800),var(--sb-blue-600));color:#fff;border-radius:14px;padding:46px 48px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;}
.sb-cta h2{color:#fff;font-size:26px;margin:0 0 8px;}
.sb-cta p{color:#d6e2f2;margin:0;}

/* ---------- Forms ---------- */
.sb-form{background:#fff;border:1px solid var(--sb-line);border-radius:var(--sb-radius);padding:30px;box-shadow:var(--sb-shadow);}
.sb-form .form-group{margin-bottom:18px;}
.sb-form label{display:block;font-weight:600;color:var(--sb-navy-800);margin-bottom:6px;font-size:14px;}
.sb-form .form-control,
.sb-input{width:100%;padding:11px 14px;border:1px solid var(--sb-line);border-radius:6px;font-family:var(--sb-font);font-size:15px;color:var(--sb-ink);background:#fff;outline:none;transition:border-color .2s,box-shadow .2s;}
.sb-form .form-control:focus,.sb-input:focus{border-color:var(--sb-blue-600);box-shadow:0 0 0 3px rgba(27,79,138,.15);}
textarea.sb-input{height:160px;resize:vertical;}

/* ---------- Footer ---------- */
.site-footer{background:var(--sb-navy-900);color:#aeb9c9;padding:54px 0 0;font-size:14px;}
.site-footer h4{color:#fff;font-size:17px;margin:0 0 18px;position:relative;padding-bottom:12px;}
.site-footer h4::after{content:"";position:absolute;left:0;bottom:0;width:36px;height:3px;background:var(--sb-gold-500);border-radius:2px;}
.site-footer a{color:#aeb9c9;}
.site-footer a:hover{color:var(--sb-gold-400);}
.site-footer__cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;}
.site-footer__brand img{height:48px;margin-bottom:14px;}
.site-footer__brand p{color:#8d9bb0;font-size:13px;line-height:1.8;}
.site-footer__brand .sb-footer-contact p{margin:4px 0;}
.site-footer__brand .sb-footer-contact i{color:var(--sb-gold-500);margin-right:8px;width:16px;}
.site-footer__links li{list-style:none;margin:0 0 10px;padding:0;}
.site-footer__links ul{padding:0;margin:0;}
.site-footer__social a{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.08);color:#fff;margin-right:8px;transition:background .2s,transform .2s;}
.site-footer__social a:hover{background:var(--sb-gold-500);transform:translateY(-3px);}
.site-footer__bottom{border-top:1px solid rgba(255,255,255,.10);margin-top:40px;padding:18px 0;text-align:center;color:#7c8aa0;font-size:13px;}
.site-footer__bottom a{color:#9fb0c6;}

/* ---------- Misc legacy cleanup ---------- */
/* 旧版固定头部给 .wrapper 预留的 95px 顶部空隙（新头部为 sticky，已占文档流），去掉 */
.wrapper{padding-top:0;}
#header_shadow{display:none;}
.btn-style,.btn-animate{font-family:var(--sb-font) !important;}
.divider-shadow,.uline-title{display:none;}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .sb-prod-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:991px){
  .sb-feature{grid-template-columns:repeat(2,1fr);}
  .sb-prod-grid{grid-template-columns:repeat(2,1fr);}
  .sb-cat-layout{grid-template-columns:1fr;}
  .sb-cat-nav{position:static;}
  .sb-pd{grid-template-columns:1fr;}
  .sb-news-grid{grid-template-columns:1fr;}
  .site-footer__cols{grid-template-columns:1fr 1fr;}
  .site-header__inner{min-height:70px;height:auto;padding:8px 0;}
  .site-nav__search{display:none;}
  .site-nav__toggle{display:block;}
  .site-nav{display:block;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--sb-line);
    box-shadow:var(--sb-shadow);max-height:0;overflow:hidden;transition:max-height .3s;}
  .site-nav.is-open{max-height:calc(100vh - 70px);max-height:calc(100dvh - 70px);overflow-y:auto;-webkit-overflow-scrolling:touch;}
  .site-nav > ul{flex-direction:column;align-items:stretch;gap:0;padding:8px 0;}
  .site-nav > ul > li > a{padding:14px 20px;}
  .site-nav > ul > li > a::after{display:none;}
  .site-nav__sub{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;border-top:1px solid var(--sb-line);display:none;}
  .has-menu.is-open .site-nav__sub{display:block;}
  .sb-hero__text h1{font-size:34px;}
  .sb-hero__inner{padding:60px 0;}
}
@media (max-width:600px){
  .sb-feature,.sb-prod-grid,.site-footer__cols{grid-template-columns:1fr;}
  .sb-section{padding:44px 0;}
  .sb-head__title{font-size:24px;}
  .sb-hero__text h1{font-size:28px;}
  .sb-cta{flex-direction:column;align-items:flex-start;}
}

/* ---------- Legacy inner-page header (.topic / .breadcrumb) ---------- */
.topic{
  background:linear-gradient(135deg,var(--sb-navy-900),var(--sb-blue-600));
  padding:42px 0;margin:0;color:#fff;
  position:relative;overflow:hidden;
}
.topic::after{content:"";position:absolute;right:-50px;bottom:-50px;width:220px;height:220px;border:36px solid rgba(255,255,255,.05);border-radius:50%;}
.breadcrumb{background:transparent;border:0;border-radius:0;padding:0;margin:0;font-size:15px;color:rgba(255,255,255,.8);}
.breadcrumb > li{color:rgba(255,255,255,.75);display:inline-block;}
.breadcrumb > li + li:before{content:"/";color:rgba(255,255,255,.4);padding:0 10px;font-weight:400;}
.breadcrumb > li > a{color:rgba(255,255,255,.9);}
.breadcrumb > li > a:hover{color:#fff;}
.breadcrumb > li.active{color:var(--sb-gold-400);font-weight:600;}
.topic + .container{padding-top:44px;padding-bottom:20px;}

/* ---------- Pagination ---------- */
.sb-pager{display:flex;align-items:center;justify-content:center;gap:8px;margin:36px 0 10px;flex-wrap:wrap;}
.sb-pager a,.sb-pager span{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 14px;border:1px solid var(--sb-line);border-radius:6px;color:var(--sb-navy-800);font-size:14px;font-weight:600;transition:all .2s;}
.sb-pager a:hover{border-color:var(--sb-blue-600);color:var(--sb-blue-600);}
.sb-pager .is-current{background:var(--sb-blue-600);border-color:var(--sb-blue-600);color:#fff;}
.sb-pager .is-disabled{color:#b9c2ce;cursor:not-allowed;}

/* ---------- Product detail extra ---------- */
.sb-pd__price{display:inline-block;background:var(--sb-gold-500);color:#fff;font-weight:700;padding:6px 16px;border-radius:20px;font-size:15px;}
.sb-pd__rel{margin-top:40px;}
.sb-pd__rel h3{font-size:20px;margin:0 0 18px;padding-left:12px;border-left:4px solid var(--sb-gold-500);}
.sb-rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
@media (max-width:991px){.sb-rel-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:600px){.sb-rel-grid{grid-template-columns:1fr;}}

/* ---------- Product mega menu ---------- */
.site-nav > ul > li.sb-mega-li{position:static;}
.site-nav__mega{position:absolute;top:100%;left:0;right:0;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:2px solid var(--sb-gold-500);box-shadow:0 24px 44px rgba(15,44,82,.16);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .22s,transform .22s,visibility .22s;z-index:80;}
.sb-mega-li:hover .site-nav__mega{opacity:1;visibility:visible;transform:translateY(0);}
.site-nav__mega-inner{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px 26px;padding:30px 0 32px;}
.sb-mega-col{min-width:0;}
.sb-mega-col__title{display:block;font-weight:700;color:var(--sb-navy-800);font-size:15px;line-height:1.35;padding:7px 12px;border-left:3px solid var(--sb-gold-500);margin-bottom:8px;background:var(--sb-soft);border-radius:0 6px 6px 0;}
a.sb-mega-col__title:hover{color:var(--sb-blue-600);}
.sb-mega-col ul{list-style:none;margin:0;padding:0;}
/* 子分类较多的分类：该列占 2 个网格位，内部链接排 2 列（最多 2 列） */
.sb-mega-col--wide{grid-column:span 2;}
.sb-mega-col ul.sb-mega-list--2col{columns:2;column-gap:20px;}
.sb-mega-col ul.sb-mega-list--2col > li{break-inside:avoid;-webkit-column-break-inside:avoid;page-break-inside:avoid;}
.sb-mega-col li a{display:block;padding:6px 13px;color:#3d4c63;font-size:13.5px;border-radius:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.sb-mega-col li a:hover{background:var(--sb-soft);color:var(--sb-blue-600);}
.sb-mega-col--feature{background:linear-gradient(180deg,#f6f9fd,#e9f0f9);border-radius:10px;padding:14px 16px;border:1px solid #dfe8f4;}
@media (max-width:991px){
  .site-nav__mega{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;display:none;border:0;border-top:1px solid var(--sb-line);border-bottom:1px solid var(--sb-line);}
  .sb-mega-li.is-open .site-nav__mega{display:block;}
  .site-nav__mega-inner{grid-template-columns:1fr;gap:6px;padding:12px 16px 16px;}
  .sb-mega-col li a{white-space:normal;}
  .sb-mega-col--wide{grid-column:auto;}
  .sb-mega-col ul.sb-mega-list--2col{columns:1;}
}

/* ---------- List page upgrades (homepage style) ---------- */
.sb-pagehero .sb-hero-eyebrow{display:inline-block;color:var(--sb-gold-400);letter-spacing:3px;font-size:13px;font-weight:600;text-transform:uppercase;margin:0 0 10px;}
.sb-head--left{text-align:left;margin:0 0 30px;max-width:none;}
.sb-head--left .sb-head__title::after{left:0;transform:translateX(0);}
.sb-empty{background:#fff;border:1px dashed #c9d4e2;border-radius:var(--sb-radius);padding:64px 24px;text-align:center;color:var(--sb-muted);}
.sb-empty i{font-size:42px;color:#c3cddb;display:block;margin-bottom:16px;}
.sb-empty p{margin:0 0 20px;font-size:15px;}
/* sub-series text card (no image) */
.sb-sub-card{border-left:3px solid var(--sb-gold-500);}
.sb-sub-card .sb-prod-card__body{padding:20px 20px 18px;}
.sb-sub-card .sb-prod-card__title{font-size:18px;margin-bottom:10px;}
.sb-sub-card .sb-prod-card__desc{min-height:44px;margin-bottom:12px;}
/* sub-series compact chips */
.sb-subnav{display:flex;flex-wrap:wrap;gap:10px;margin:4px 0 34px;}
.sb-subnav__item{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border:1px solid var(--sb-line);background:#fff;border-radius:999px;font-size:14px;font-weight:600;color:var(--sb-navy-800);line-height:1.4;transition:all .2s;}
.sb-subnav__item:hover{border-color:var(--sb-blue-600);color:var(--sb-blue-600);transform:translateY(-2px);box-shadow:0 6px 16px rgba(20,49,94,.10);}
.sb-subnav__n{font-size:12px;font-weight:400;color:var(--sb-muted);background:#f1f5fa;border-radius:999px;padding:1px 8px;}

/* =====================================================================
   Home hero v2 - full-bleed photo + dark mask + fact bar  (2026-11-03)
   ===================================================================== */
.sb-hero2{position:relative;background:var(--sb-navy-900);overflow:hidden;}
.sb-hero2 .carousel-inner{overflow:hidden;}
.sb-hero2 .carousel-inner > .item{
  position:relative;display:none;align-items:center;height:auto;min-height:600px;
  padding:0;background-color:#0b1c33;background-size:cover;background-position:center center;background-repeat:no-repeat;
}
.sb-hero2 .carousel-inner > .item.active{display:flex;}
.sb-hero2 .carousel-inner > .item::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(100deg,rgba(4,16,34,.95) 0%,rgba(4,16,34,.86) 38%,rgba(4,16,34,.52) 68%,rgba(4,16,34,.30) 100%);
}
.sb-hero2 .carousel-inner > .item > .container{position:relative;z-index:2;padding-top:104px;padding-bottom:104px;}
.sb-hero2__body{max-width:700px;}
.sb-hero2__eyebrow{
  display:inline-block;color:var(--sb-gold-400);letter-spacing:3px;font-size:12.5px;font-weight:600;
  text-transform:uppercase;margin-bottom:20px;padding-left:14px;border-left:3px solid var(--sb-gold-500);
}
.sb-hero2 h1,.sb-hero2 h2{
  color:#fff;font-size:clamp(34px,4.1vw,54px);line-height:1.18;margin:0 0 20px;
  font-weight:800;letter-spacing:-.5px;
}
.sb-hero2 h1 em,.sb-hero2 h2 em{font-style:normal;color:var(--sb-gold-400);}
.sb-hero2__body p{color:#c9d8ea;font-size:17px;line-height:1.8;max-width:620px;margin:0 0 34px;}
.sb-hero2__cta{display:flex;gap:14px;flex-wrap:wrap;}
.sb-btn--lg{padding:15px 32px;font-size:16px;}
.sb-hero2 .carousel-indicators{bottom:28px;z-index:6;}
.sb-hero2 .carousel-indicators li{width:30px;height:4px;border:0;border-radius:2px;background:rgba(255,255,255,.35);margin:0 4px;}
.sb-hero2 .carousel-indicators li.active{background:var(--sb-gold-500);}
.sb-hero2 .carousel-arrow{z-index:6;}

/* fact bar under hero */
.sb-hero2__facts{background:var(--sb-navy-900);border-top:1px solid rgba(255,255,255,.10);}
.sb-hero2__facts .container{display:grid;grid-template-columns:repeat(4,1fr);}
/* Bootstrap clearfix pseudo-elements would become grid items and break the 4-col bar */
.sb-hero2__facts .container::before,.sb-hero2__facts .container::after{display:none;}
.sb-fact{padding:26px 12px;text-align:center;border-right:1px solid rgba(255,255,255,.10);}
.sb-fact:last-child{border-right:0;}
.sb-fact b{display:block;color:#fff;font-size:30px;line-height:1.05;font-weight:800;letter-spacing:-.5px;}
.sb-fact b em{font-style:normal;color:var(--sb-gold-500);font-size:18px;margin-left:2px;font-weight:700;}
.sb-fact span{display:block;color:#9fb3cc;font-size:13px;margin-top:8px;letter-spacing:.5px;}

/* nav: collapse to hamburger earlier (1100px laptops used to wrap) */
@media (max-width:1080px){
  .site-nav__search{display:none;}
  .site-nav__toggle{display:block;}
  .site-nav{display:block;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--sb-line);
    box-shadow:var(--sb-shadow);max-height:0;overflow:hidden;transition:max-height .3s;}
  .site-nav.is-open{max-height:calc(100vh - 70px);max-height:calc(100dvh - 70px);overflow-y:auto;-webkit-overflow-scrolling:touch;}
  .site-nav > ul{flex-direction:column;align-items:stretch;gap:0;padding:8px 0;}
  .site-nav > ul > li > a{padding:14px 20px;}
  .site-nav > ul > li > a::after{display:none;}
  .site-nav__sub{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;border-top:1px solid var(--sb-line);display:none;}
  .has-menu.is-open .site-nav__sub{display:block;}
}
@media (max-width:991px){
  .sb-hero2 .carousel-inner > .item{min-height:480px;}
  .sb-hero2 .carousel-inner > .item > .container{padding-top:64px;padding-bottom:64px;}
  .sb-hero2__body p{font-size:16px;}
  .sb-hero2__facts .container{grid-template-columns:repeat(2,1fr);}
  .sb-fact:nth-child(2n){border-right:0;}
  .sb-fact:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.10);}
}
@media (max-width:600px){
  .sb-hero2 .carousel-inner > .item{min-height:420px;}
  .sb-hero2__cta{flex-direction:column;align-items:stretch;}
  .sb-hero2__cta .sb-btn{justify-content:center;}
  .sb-fact b{font-size:24px;}
  .sb-fact{padding:20px 8px;}
}

/* ---------- About page ---------- */
.sb-about{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start;}
.sb-about__text .sb-head__title{text-align:left;}
.sb-about__text .sb-head__title::after{left:0;transform:none;}
.sb-rich{color:var(--sb-body);font-size:15.5px;line-height:1.95;}
.sb-rich p{margin:0 0 14px;}
.sb-about__pics{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.sb-about__pics img{width:100%;height:178px;object-fit:cover;border-radius:12px;box-shadow:0 10px 26px rgba(20,49,94,.12);}
.sb-cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:38px;}
.sb-cap{background:#fff;border:1px solid var(--sb-line);border-radius:14px;padding:16px 16px 20px;text-align:center;box-shadow:0 6px 18px rgba(20,49,94,.06);transition:all .25s;}
.sb-cap:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(20,49,94,.13);}
.sb-cap__pic{margin:-34px auto 14px;width:132px;height:132px;border-radius:50%;overflow:hidden;border:5px solid #fff;box-shadow:0 8px 22px rgba(20,49,94,.16);background:var(--sb-soft);}
.sb-cap__pic img{width:100%;height:100%;object-fit:cover;display:block;}
.sb-cap h3{font-size:17px;font-weight:700;color:var(--sb-navy-800);margin:2px 0 8px;}
.sb-cap p{font-size:13.5px;color:var(--sb-muted);margin:0;line-height:1.7;}
@media (max-width:1199px){
  .sb-cap-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:991px){
  .sb-about{grid-template-columns:1fr;}
  .sb-cap-grid{grid-template-columns:repeat(2,1fr);}
  .sb-cap__pic{margin-top:-30px;width:118px;height:118px;}
}
@media (max-width:575px){
  .sb-cap-grid{grid-template-columns:1fr;}
}


/* ---------- Mission feature pages ---------- */
.sb-gal{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.sb-gal img{width:100%;height:220px;object-fit:cover;border-radius:var(--sb-radius);border:1px solid var(--sb-line);}
.sb-gal figcaption{font-size:13px;color:var(--sb-muted);margin-top:8px;text-align:center;}
.sb-parts{display:grid;grid-template-columns:420px 1fr;gap:40px;align-items:center;}
.sb-parts__pic img{width:100%;border-radius:var(--sb-radius);border:1px solid var(--sb-line);}
@media (max-width:991px){
  .sb-parts{grid-template-columns:1fr;}
  .sb-gal img{height:170px;}
}
@media (max-width:575px){
  .sb-gal{grid-template-columns:1fr;}
}


/* ---------- sb-lightbox 产品图弹层预览 ---------- */
.sb-lb-mask{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(10,20,35,.72);z-index:99990;}
.sb-lb-mask.on{display:block;}
.sb-lb-box{position:fixed;background:#fff;border-radius:10px;box-shadow:0 18px 60px rgba(0,0,0,.4);z-index:99991;max-width:86vw;overflow:hidden;}
.sb-lb-head{display:flex;align-items:center;justify-content:space-between;background:#1f3552;color:#fff;font-size:14px;padding:10px 14px;cursor:move;user-select:none;}
.sb-lb-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:80vw;}
.sb-lb-x{font-size:22px;line-height:1;cursor:pointer;padding:0 4px;color:#cfd9e6;}
.sb-lb-x:hover{color:#fff;}
.sb-lb-body{position:relative;padding:12px;text-align:center;}
.sb-lb-img{display:block;margin:0 auto;max-width:82vw;max-height:72vh;width:auto;height:auto;}
.sb-lb-nav{position:absolute;top:50%;margin-top:-21px;width:42px;height:42px;line-height:40px;border-radius:50%;background:rgba(15,44,82,.55);color:#fff;font-size:30px;cursor:pointer;user-select:none;text-align:center;font-family:Arial,sans-serif;}
.sb-lb-nav:hover{background:rgba(15,44,82,.88);}
.sb-lb-prev{left:18px;}
.sb-lb-next{right:18px;}
.sb-lb-count{color:#cfd9e6;font-size:12px;margin-left:10px;white-space:nowrap;}

.sb-pd__main img,.sb-pd__thumbs img{cursor:zoom-in;}

/* crumb description (product detail) */
.sb-crumb__desc{margin:4px 0 0;color:var(--sb-muted);font-size:12px;line-height:1.5;}

/* crumb hero variant (product detail) */
.sb-crumb--hero{background:linear-gradient(135deg,#0d2440,#1b4f8a);border-bottom:none;padding:30px 0;position:relative;overflow:hidden;}
.sb-crumb--hero::after{content:"";position:absolute;right:-60px;bottom:-70px;width:220px;height:220px;border:36px solid rgba(255,255,255,.05);border-radius:50%;}
.sb-crumb--hero a{color:rgba(255,255,255,.82);}
.sb-crumb--hero a:hover{color:#fff;}
.sb-crumb--hero span{color:#fff;}
.sb-crumb--hero .sb-crumb__desc{color:rgba(255,255,255,.75);}

/* ---- Technical support page (technical.html) ---- */
.sb-tech-layout{display:grid;grid-template-columns:250px minmax(0,1fr) 300px;gap:28px;align-items:start;}
@media (max-width:1199px){.sb-tech-layout{grid-template-columns:240px minmax(0,1fr);}.sb-tech-layout>aside:last-child{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:24px;}.sb-tech-layout>aside:last-child .sb-side-card{margin-bottom:0;}}
@media (max-width:767px){.sb-tech-layout{grid-template-columns:1fr;}.sb-tech-layout>aside:last-child{grid-template-columns:1fr;}}
.sb-side-card{background:#fff;border:1px solid #e6eaf1;border-radius:12px;padding:20px 22px;margin-bottom:24px;box-shadow:0 2px 10px rgba(13,36,64,.04);}
.sb-side-card__title{display:block;font-size:15px;font-weight:700;color:#0d2440;margin-bottom:14px;}
.sb-cat-list{list-style:none;margin:0;padding:0;}
.sb-cat-list li{margin:2px 0;}
.sb-cat-list a{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:9px 12px;border-radius:8px;color:#33475e;font-size:14px;text-decoration:none;transition:background .2s,color .2s;}
.sb-cat-list a:hover{background:#f2f6fb;color:#0d2440;}
.sb-cat-list li.is-current a{background:#0d2440;color:#fff;font-weight:600;}
.sb-cat-list__n{flex:none;font-size:12px;background:rgba(27,79,138,.1);color:#1b4f8a;border-radius:99px;padding:1px 9px;line-height:1.5;}
.sb-cat-list li.is-current .sb-cat-list__n{background:rgba(255,255,255,.16);color:#fff;}
.sb-news-list{background:#fff;border:1px solid #e6eaf1;border-radius:12px;padding:6px 28px;}
.sb-news-item{padding:22px 0;border-bottom:1px solid #eef1f6;}
.sb-news-item:last-child{border-bottom:none;}
.sb-news-item__title{margin:0 0 8px;font-size:17px;font-weight:700;line-height:1.5;}
.sb-news-item__title a{color:#16324f;text-decoration:none;}
.sb-news-item__title a:hover{color:#1b4f8a;}
.sb-news-item__abs{margin:0 0 10px;color:#5b6b7d;font-size:14px;line-height:1.8;}
.sb-news-item__meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:13px;color:#8595a6;}
.sb-news-item__tag{background:rgba(27,79,138,.08);color:#1b4f8a;padding:2px 12px;border-radius:99px;text-decoration:none;font-size:12px;transition:background .2s,color .2s;}
.sb-news-item__tag:hover{background:#1b4f8a;color:#fff;}
.sb-news-item__more{margin-left:auto;color:#1b4f8a;text-decoration:none;font-size:13px;}
.sb-news-item__more:hover{text-decoration:underline;}
.sb-hot-list{list-style:none;margin:0;padding:0;}
.sb-hot-list li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-bottom:1px dashed #eef1f6;}
.sb-hot-list li:last-child{border-bottom:none;}
.sb-hot-list__num{flex:none;font-size:15px;font-weight:800;color:#c3cedb;font-style:italic;}
.sb-hot-list li:nth-child(1) .sb-hot-list__num{color:#e0a43c;}
.sb-hot-list li:nth-child(2) .sb-hot-list__num{color:#8fa2b8;}
.sb-hot-list li:nth-child(3) .sb-hot-list__num{color:#c98a5e;}
.sb-hot-list a{color:#33475e;font-size:13.5px;line-height:1.55;text-decoration:none;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.sb-hot-list a:hover{color:#1b4f8a;}
.sb-consult{background:linear-gradient(135deg,#0d2440,#1b4f8a);border:none;color:#fff;}
.sb-consult__title{display:block;font-size:16px;font-weight:700;color:#fff;margin-bottom:10px;}
.sb-consult p{color:rgba(255,255,255,.8);font-size:13px;line-height:1.7;margin:0 0 12px;}
.sb-consult ul{list-style:none;margin:0 0 14px;padding:0;font-size:13px;color:#ffd28a;display:grid;gap:6px;}
.sb-consult__btn{display:block;text-align:center;background:#e0a43c;color:#0d2440;font-weight:700;border-radius:8px;padding:10px 0;text-decoration:none;font-size:14px;}
.sb-consult__btn:hover{background:#f0b552;color:#0d2440;}
.sb-consult__tel{display:block;margin-top:12px;color:rgba(255,255,255,.85);font-size:13px;text-align:center;}