/* ==========================================================================
   EastChem · 化工 B2B 企业主题
   主色：深藏蓝 #133270 / 辅助色：钢蓝 #529dba
   ========================================================================== */

:root{
  --navy:#133270;
  --navy-d:#0e2857;
  --navy-l:#1d4691;
  --accent:#529dba;
  --accent-soft:rgba(82,157,186,.10);
  --ink:#2b3038;
  --ink-2:#555c66;
  --ink-3:#8a929e;
  --line:#e6e9ee;
  --line-2:#eef1f5;
  --bg:#ffffff;
  --bg-soft:#f5f7f9;
  --radius:2px;
  --wrap:1200px;
  --shadow-1:0 2px 10px rgba(19,50,112,.05);
  --shadow-2:0 14px 34px -18px rgba(19,50,112,.28);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .18s}
a:hover{color:var(--accent)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}

.ec-wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.ec-icon{flex:0 0 auto}
.ec-skip{position:absolute;left:-9999px;top:0;background:var(--navy);color:#fff;padding:10px 16px;z-index:999}
.ec-skip:focus{left:12px;top:12px}
.screen-reader-text{
  border:0;clip:rect(1px,1px,1px,1px);clip-path:inset(50%);height:1px;width:1px;
  margin:-1px;overflow:hidden;padding:0;position:absolute!important;word-wrap:normal!important;
}
.screen-reader-text:focus{
  background:#fff;border-radius:2px;box-shadow:0 0 2px 2px rgba(0,0,0,.2);clip:auto!important;
  clip-path:none;color:var(--navy);display:block;font-size:14px;font-weight:700;height:auto;
  left:16px;line-height:normal;padding:14px 22px;text-decoration:none;top:16px;width:auto;z-index:100000;
}

/* ---------- 按钮 ---------- */
.ec-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border:1px solid transparent;border-radius:var(--radius);
  font-size:14px;font-weight:500;letter-spacing:.02em;line-height:1.2;
  transition:all .2s;white-space:nowrap;
}
.ec-btn--sm{padding:9px 18px;font-size:13px}
.ec-btn--lg{padding:15px 34px;font-size:15px}
.ec-btn--solid{background:var(--navy);color:#fff;border-color:var(--navy)}
.ec-btn--solid:hover{background:var(--navy-l);border-color:var(--navy-l);color:#fff}
.ec-btn--accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.ec-btn--accent:hover{background:#3f8aa6;border-color:#3f8aa6;color:#fff}
.ec-btn--line{border-color:#cfd6df;color:var(--navy);background:transparent}
.ec-btn--line:hover{border-color:var(--navy);background:var(--navy);color:#fff}
.ec-btn--ghost{border-color:rgba(255,255,255,.55);color:#fff;background:transparent}
.ec-btn--ghost:hover{background:#fff;color:var(--navy);border-color:#fff}

/* ---------- 顶部条 ---------- */
.ec-topbar{background:#f5f6f8;border-bottom:1px solid var(--line-2);font-size:12.5px;color:var(--ink-3)}
.ec-topbar__in{display:flex;align-items:center;justify-content:space-between;height:40px}
.ec-topbar__left{display:flex;align-items:center;gap:22px;min-width:0}
.ec-topbar__item{display:inline-flex;align-items:center;gap:6px;color:var(--ink-3);white-space:nowrap}
.ec-topbar__item a{color:var(--ink-2)}
.ec-topbar__item svg{opacity:.65}
.ec-topbar__right{display:flex;align-items:center;gap:18px}
.ec-topnav{display:flex;gap:16px}
.ec-topnav li a{color:var(--ink-3);font-size:12.5px}
.ec-topbar__quote{color:var(--accent);font-weight:500;border-left:1px solid #dde2e8;padding-left:18px}

/* ---------- 语言切换 ---------- */
.ec-lang{position:relative}
.ec-lang__btn{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12.5px;color:var(--ink-2);line-height:1;
  padding:3px 0;transition:color .2s;
}
.ec-lang__btn:hover{color:var(--navy)}
.ec-lang__btn svg:first-child{opacity:.7}
.ec-lang__btn svg:last-child{transform:rotate(90deg);transition:transform .2s;opacity:.55}
.ec-lang:hover .ec-lang__btn svg:last-child,
.ec-lang.is-open .ec-lang__btn svg:last-child{transform:rotate(-90deg)}
.ec-lang__list{
  position:absolute;right:0;top:calc(100% + 10px);min-width:138px;z-index:95;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-2);
  padding:6px 0;opacity:0;visibility:hidden;transform:translateY(6px);transition:.18s;
}
/* 覆盖按钮与菜单之间的空隙，鼠标移过去时不会因为 hover 断开而收起 */
.ec-lang__list::before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
.ec-lang:hover .ec-lang__list,.ec-lang.is-open .ec-lang__list{opacity:1;visibility:visible;transform:none}
.ec-lang__list a{display:block;padding:8px 16px;font-size:13px;color:var(--ink-2);white-space:nowrap}
.ec-lang__list a:hover{background:var(--bg-soft);color:var(--navy)}
.ec-lang__list a.is-active{color:var(--navy);font-weight:600}

/* ---------- 头部 ---------- */
.ec-header{position:sticky;top:0;z-index:90;background:#fff;border-bottom:1px solid var(--line-2);transition:box-shadow .2s}
.ec-header.is-stuck{box-shadow:0 6px 22px -14px rgba(0,0,0,.28)}
.ec-header__in{display:flex;align-items:center;justify-content:space-between;height:84px;gap:28px}
.ec-logo{flex:0 1 auto;min-width:0;max-width:340px}
.ec-logo img{max-height:60px;width:auto;height:auto;display:block}
.ec-logo__link,.ec-logo .custom-logo-link{display:inline-flex;align-items:center;line-height:0}
.ec-logo__text{display:flex;align-items:center;gap:12px;min-width:0}
.ec-logo__mark{
  width:42px;height:42px;background:var(--navy);color:#fff;display:grid;place-items:center;
  font-size:22px;font-weight:700;letter-spacing:-.02em;border-radius:3px;flex:0 0 auto;
}
.ec-logo__txt{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.ec-logo__txt strong{font-size:18px;font-weight:700;color:var(--navy);letter-spacing:.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ec-logo__txt em{font-style:normal;font-size:11.5px;color:var(--ink-3);letter-spacing:.06em;margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.ec-nav{margin-left:auto}
.ec-menu{display:flex;align-items:center;gap:2px}
.ec-menu > li{position:relative;flex:0 0 auto}
.ec-menu > li > a{
  display:block;padding:0 18px;height:84px;line-height:84px;
  font-size:15px;font-weight:500;color:var(--ink);position:relative;white-space:nowrap;
}
.ec-menu > li > a::after{
  content:"";position:absolute;left:18px;right:18px;bottom:0;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:center;transition:transform .22s;
}
.ec-menu > li:hover > a,.ec-menu > li.current-menu-item > a,.ec-menu > li.current-menu-parent > a,.ec-menu > li.current-menu-ancestor > a{color:var(--navy)}
.ec-menu > li:hover > a::after,.ec-menu > li.current-menu-item > a::after,.ec-menu > li.current-menu-parent > a::after,.ec-menu > li.current-menu-ancestor > a::after{transform:scaleX(1)}

/* 带下拉的父项：右侧小箭头 */
.ec-menu > .menu-item-has-children > a{padding-right:28px}
.ec-menu > .menu-item-has-children::after{
  content:"";position:absolute;right:9px;top:50%;width:5px;height:5px;margin-top:-4px;
  border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;
  transform:rotate(45deg);opacity:.42;pointer-events:none;
  transition:transform .22s,margin-top .22s,opacity .22s;
}
.ec-menu > .menu-item-has-children:hover::after{transform:rotate(-135deg);margin-top:-1px;opacity:.85}
.ec-menu > .current-menu-parent::after,.ec-menu > .current-menu-ancestor::after{opacity:.85}

.ec-menu .sub-menu{
  position:absolute;left:0;top:100%;min-width:172px;background:#fff;
  border-top:2px solid var(--accent);box-shadow:0 12px 30px -14px rgba(19,50,112,.3);
  opacity:0;visibility:hidden;transform:translateY(8px);transition:all .2s;
  padding:8px 0;
}
.ec-menu li:hover > .sub-menu{opacity:1;visibility:visible;transform:translateY(0)}
.ec-menu .sub-menu a{display:block;padding:9px 20px;font-size:14px;color:var(--ink-2)}
.ec-menu .sub-menu a:hover{background:var(--bg-soft);color:var(--navy)}

.ec-header__act{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.ec-search-btn{background:none;border:0;padding:6px;color:var(--ink-2);display:flex}
.ec-search-btn:hover{color:var(--navy)}
.ec-burger{display:none;background:none;border:0;width:40px;height:40px;padding:11px 9px;flex-direction:column;align-items:stretch;justify-content:space-between}
.ec-burger span{display:block;width:100%;height:2px;background:var(--navy);border-radius:2px;transition:.25s}
.ec-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.ec-burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.ec-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

.ec-searchbar{border-top:1px solid var(--line-2);background:#fafbfc;padding:16px 0}
.ec-searchform{display:flex;gap:10px;max-width:720px;margin:0 auto}
.ec-searchform input[type=search]{
  flex:1;padding:12px 16px;border:1px solid var(--line);background:#fff;border-radius:var(--radius);font-size:14px;
}
.ec-searchform input[type=search]:focus{outline:none;border-color:var(--accent)}
.ec-searchform--big{margin:0 auto 34px}

/* ---------- Hero ---------- */
.ec-hero{position:relative;background:var(--navy);overflow:hidden}
.ec-hero__track{position:relative;min-height:560px}
.ec-hero__slide{
  position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .8s ease;
  background-size:cover;background-position:center;background-color:var(--navy);
}
.ec-hero__slide::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(15,40,87,.94) 0%,rgba(19,50,112,.84) 42%,rgba(19,50,112,.42) 100%);
}
.ec-hero__slide.is-active{opacity:1;visibility:visible}
.ec-hero__body{position:relative;z-index:2;padding:132px 24px 118px;max-width:var(--wrap)}
.ec-hero--plain .ec-hero__body{padding:118px 24px 104px}
.ec-hero__title{
  font-size:clamp(28px,3.6vw,46px);line-height:1.28;font-weight:700;color:#fff;letter-spacing:-.01em;max-width:700px;
}
.ec-hero__sub{font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.8);margin-top:20px;max-width:540px}
.ec-hero__act{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}
.ec-hero__dots{position:absolute;left:0;right:0;bottom:26px;display:flex;justify-content:center;gap:9px;z-index:3}
.ec-hero__dot{width:9px;height:9px;border-radius:50%;border:0;background:rgba(255,255,255,.42);padding:0;transition:.25s}
.ec-hero__dot.is-active{width:28px;border-radius:5px;background:#fff}

/* ---------- 版块通用 ---------- */
.ec-sec{padding:76px 0}
.ec-sec--soft{background:var(--bg-soft)}
.ec-head{margin-bottom:4px}
.ec-head__title{
  font-size:29px;font-weight:700;color:var(--navy);letter-spacing:-.01em;line-height:1.35;
  position:relative;padding-left:15px;
}
.ec-head__title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;background:var(--accent);border-radius:2px}
.ec-head__sub{font-size:11.5px;letter-spacing:.22em;color:var(--accent);margin-top:10px;padding-left:15px;text-transform:uppercase}
.ec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.ec-head-row--center{justify-content:center;text-align:center}
.ec-head-row--center .ec-head__title{padding-left:0}
.ec-head-row--center .ec-head__title::before{display:none}
.ec-head-row--center .ec-head__sub{padding-left:0}
.ec-more{
  display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--ink-3);
  white-space:nowrap;padding-bottom:4px;border-bottom:1px solid transparent;
}
.ec-more:hover{color:var(--navy);border-color:var(--navy)}
.ec-subhead{font-size:19px;font-weight:700;color:var(--navy);margin-bottom:18px;padding-left:13px;position:relative}
.ec-subhead::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:3px;background:var(--accent);border-radius:2px}

/* ---------- 网格 ---------- */
.ec-grid{display:grid;gap:22px}
.ec-grid--4{grid-template-columns:repeat(4,1fr)}
.ec-grid--3{grid-template-columns:repeat(3,1fr)}

/* ---------- 产品卡片 ---------- */
.ec-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color .22s,box-shadow .22s,transform .22s;overflow:hidden;display:flex;flex-direction:column;
}
.ec-card:hover{border-color:#c9dbe4;box-shadow:var(--shadow-2);transform:translateY(-2px)}
.ec-card__media{display:block;aspect-ratio:1/1;background:#fbfcfd;overflow:hidden}
.ec-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.ec-card:hover .ec-card__media img{transform:scale(1.045)}
.ec-card__body{padding:18px 18px 16px;display:flex;flex-direction:column;flex:1}
.ec-card__cat{font-size:11.5px;color:var(--accent);letter-spacing:.08em;margin-bottom:6px}
.ec-card__title{font-size:16px;font-weight:600;line-height:1.55;color:var(--ink)}
.ec-card__title a{color:inherit}
.ec-card__title a:hover{color:var(--navy)}
.ec-card__meta{font-size:12.5px;color:var(--ink-3);margin-top:6px;min-height:20px}
.ec-card__btn{
  margin-top:auto;padding-top:13px;border-top:1px solid var(--line-2);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--navy);font-weight:500;
}
.ec-card__btn:hover{color:var(--accent)}

/* 占位图 */
.ec-ph{
  display:grid;place-items:center;width:100%;height:100%;min-height:120px;
  background:linear-gradient(135deg,hsl(var(--ph-h,200) 40% 97%),hsl(var(--ph-h,200) 34% 89%));
  color:hsl(var(--ph-h,200) 42% 48%);font-size:56px;font-weight:700;letter-spacing:-.02em;user-select:none;
}
.ec-ph--wide{aspect-ratio:4/3;height:auto}
.ec-ph--tall{aspect-ratio:3/4;height:auto}

/* ---------- 资讯卡片 ---------- */
.ec-post{background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;transition:.22s}
.ec-post:hover{border-color:#c9dbe4;box-shadow:var(--shadow-2)}
.ec-post__media{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--bg-soft)}
.ec-post__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.ec-post:hover .ec-post__media img{transform:scale(1.04)}
.ec-post__body{padding:20px 20px 22px}
.ec-post__date{font-size:12px;color:var(--ink-3);letter-spacing:.04em}
.ec-post__title{font-size:16.5px;font-weight:600;line-height:1.6;margin-top:8px}
.ec-post__excerpt{font-size:13.5px;color:var(--ink-2);line-height:1.85;margin-top:10px}

/* ---------- 八项理由 ---------- */
.ec-feats{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-left:1px solid var(--line);background:#fff;
}
.ec-feats--light{background:#fff}
.ec-feat{padding:32px 26px 30px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);transition:background .2s}
.ec-feat:hover{background:#fbfcfd}
.ec-feat__icon{
  width:50px;height:50px;display:grid;place-items:center;border-radius:50%;
  background:var(--accent-soft);color:var(--accent);margin-bottom:16px;
}
.ec-feat__title{font-size:15.5px;font-weight:600;color:var(--navy);margin-bottom:8px}
.ec-feat__text{font-size:13px;line-height:1.85;color:var(--ink-2)}

/* ---------- 关于 ---------- */
.ec-about{display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center}
.ec-about__media img,.ec-about__media .ec-ph{width:100%;aspect-ratio:4/3;object-fit:cover}
.ec-about__text{margin-top:18px;font-size:14.5px;line-height:1.95;color:var(--ink-2)}
.ec-about__text p{margin-bottom:12px}
.ec-about__body .ec-btn{margin-top:22px}
.ec-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line)}
.ec-stat strong{display:block;font-size:26px;font-weight:700;color:var(--navy);line-height:1.2;letter-spacing:-.02em}
.ec-stat span{display:block;font-size:12px;color:var(--ink-3);margin-top:5px}
.ec-stats-band{background:var(--navy);padding:46px 0}
.ec-stats-band__in{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.ec-stats-band .ec-stat strong{color:#fff;font-size:32px}
.ec-stats-band .ec-stat span{color:rgba(255,255,255,.66)}

/* ---------- 新闻列表 ---------- */
.ec-newslist{border-top:1px solid var(--line)}
.ec-news-item,.ec-newsitem{
  display:flex;align-items:center;gap:28px;padding:22px 6px;border-bottom:1px solid var(--line);
  transition:background .2s,padding .2s;
}
.ec-newsitem:hover{background:#fafbfc;padding-left:14px;color:inherit}
.ec-newsitem time{flex:0 0 108px;font-size:13px;color:var(--ink-3);letter-spacing:.03em}
.ec-newsitem__main{flex:1;min-width:0}
.ec-newsitem__main h3{font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.6}
.ec-newsitem:hover .ec-newsitem__main h3{color:var(--navy)}
.ec-newsitem__main p{font-size:13px;color:var(--ink-3);margin-top:5px;line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.ec-newsitem__arrow{color:#c3cad4;flex:0 0 auto;transition:.2s}
.ec-newsitem:hover .ec-newsitem__arrow{color:var(--accent);transform:translateX(3px)}

/* ---------- CTA ---------- */
.ec-cta{background:var(--navy);position:relative;overflow:hidden;padding:56px 0}
.ec-cta::after{
  content:"";position:absolute;right:-80px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(82,157,186,.30),transparent 68%);
}
.ec-cta__in{display:flex;align-items:center;justify-content:space-between;gap:40px;position:relative;z-index:2}
.ec-cta h2{font-size:26px;font-weight:700;color:#fff;line-height:1.4}
.ec-cta p{font-size:14px;color:rgba(255,255,255,.72);margin-top:10px;max-width:560px}
.ec-cta__act{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.ec-footer{background:var(--navy-d);color:rgba(255,255,255,.72);font-size:13.5px}
.ec-footer a{color:rgba(255,255,255,.72)}
.ec-footer a:hover{color:#fff}
.ec-footer__grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1.25fr;gap:44px;padding:60px 0 52px}
.ec-footer__brand{font-size:16.5px;font-weight:600;color:#fff;margin-bottom:12px;letter-spacing:.01em}
.ec-footer__desc{line-height:1.9;color:rgba(255,255,255,.6);font-size:13px}
.ec-footer__tel{
  display:inline-flex;align-items:center;gap:9px;margin-top:20px;
  font-size:19px;font-weight:600;color:#fff!important;letter-spacing:.01em;
}
.ec-footer__col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.ec-footer__col ul li{margin-bottom:9px;line-height:1.7}
.ec-footer__menu li{margin-bottom:9px}
.ec-footer__contact li{display:flex;gap:9px;align-items:flex-start;margin-bottom:11px;line-height:1.75}
.ec-footer__contact svg{margin-top:4px;opacity:.6}
.ec-footer__qr{margin-top:18px;display:inline-flex;flex-direction:column;gap:6px;align-items:flex-start}
.ec-footer__qr img{width:92px;height:92px;background:#fff;padding:4px;border-radius:2px}
.ec-footer__qr span{font-size:11.5px;color:rgba(255,255,255,.5)}
.ec-footer__bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;font-size:12.5px;color:rgba(255,255,255,.5)}
.ec-footer__bottom-in{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.ec-footer__bottom a{margin-left:14px;color:rgba(255,255,255,.5)}
.ec-footer__powered{font-size:12px}

/* ---------- 返回顶部 ---------- */
.ec-totop{
  position:fixed;right:26px;bottom:30px;width:44px;height:44px;background:var(--navy);color:#fff;
  display:grid;place-items:center;border-radius:50%;z-index:80;opacity:0;visibility:hidden;
  transform:translateY(10px);transition:.25s;box-shadow:0 8px 20px -8px rgba(19,50,112,.6);
}
.ec-totop.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.ec-totop:hover{background:var(--accent);color:#fff}

/* ---------- 内页头部 ---------- */
.ec-pagehead{background:linear-gradient(180deg,#f7f9fb,#fff);border-bottom:1px solid var(--line-2);padding:40px 0 38px}
.ec-pagehead__title{font-size:clamp(24px,2.6vw,32px);font-weight:700;color:var(--navy);letter-spacing:-.01em;line-height:1.4;margin-top:14px}
.ec-pagehead__sub{font-size:11.5px;letter-spacing:.22em;color:var(--accent);margin-top:9px;text-transform:uppercase}
.ec-pagehead__desc{font-size:14px;color:var(--ink-2);margin-top:14px;max-width:780px;line-height:1.9}
.ec-pagehead__meta{display:flex;gap:18px;font-size:12.5px;color:var(--ink-3);margin-top:14px}
.ec-crumb{display:flex;align-items:center;gap:9px;font-size:12.5px;color:var(--ink-3);flex-wrap:wrap}
.ec-crumb a{color:var(--ink-3)}
.ec-crumb a:hover{color:var(--accent)}
.ec-crumb span{color:#c8cfd8}
.ec-crumb em{font-style:normal;color:var(--ink-2)}
.ec-crumb-bar{background:#fafbfc;border-bottom:1px solid var(--line-2);padding:14px 0}

/* ---------- 文章 ---------- */
.ec-article{max-width:900px;margin:0 auto;padding:52px 24px 70px}
.ec-article__thumb{margin-bottom:34px}
.ec-article__thumb img{width:100%;max-height:420px;object-fit:cover}
.ec-content{font-size:15.5px;line-height:1.95;color:var(--ink-2)}
.ec-content h2,.ec-content h3{color:var(--navy);font-weight:700;line-height:1.5;margin:34px 0 14px;font-size:20px}
.ec-content h4{color:var(--ink);font-weight:600;margin:26px 0 10px;font-size:16.5px}
.ec-content p{margin-bottom:16px}
.ec-content ul,.ec-content ol{margin:0 0 18px;padding-left:22px;list-style:disc}
.ec-content ol{list-style:decimal}
.ec-content li{margin-bottom:7px}
.ec-content a{color:var(--accent);border-bottom:1px solid rgba(82,157,186,.35)}
.ec-content img{margin:22px 0}
.ec-content blockquote{border-left:3px solid var(--accent);background:var(--bg-soft);padding:16px 22px;margin:22px 0;color:var(--ink-2)}
.ec-content table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14px}
.ec-content table th,.ec-content table td{border:1px solid var(--line);padding:10px 13px;text-align:left}
.ec-content table th{background:var(--bg-soft);font-weight:600}
.ec-article__foot{margin-top:46px;padding-top:30px;border-top:1px solid var(--line)}
.ec-postnav{margin:0 0 30px}
.ec-postnav .nav-links{display:flex;gap:16px}
.ec-postnav .nav-previous,.ec-postnav .nav-next{display:flex;flex:1 1 0;min-width:0}
.ec-postnav a{
  display:flex;flex-direction:column;justify-content:flex-start;gap:5px;
  width:100%;padding:15px 18px;border:1px solid var(--line);border-radius:2px;
  background:#fff;font-size:14px;color:var(--navy);line-height:1.6;
  transition:border-color .18s ease,box-shadow .18s ease,color .18s ease;
}
.ec-postnav a:hover{border-color:var(--accent);color:var(--accent);box-shadow:0 6px 18px rgba(19,50,112,.07)}
.ec-postnav a span{display:block;font-size:11.5px;color:var(--ink-3);letter-spacing:.06em;margin:0}
.ec-postnav .nav-next a{text-align:right;align-items:flex-end}
.ec-article__cta{display:flex;align-items:center;justify-content:space-between;gap:20px;background:var(--bg-soft);padding:22px 26px;flex-wrap:wrap}
.ec-article__cta p{font-size:14.5px;color:var(--ink-2)}

/* ---------- 产品详情 ---------- */
.ec-product{padding:52px 0 64px}
.ec-product__top{display:grid;grid-template-columns:460px 1fr;gap:52px;align-items:start}
.ec-product__media{
  border:1px solid var(--line);background:#fff;aspect-ratio:1/1;display:grid;place-items:center;overflow:hidden;
}
.ec-product__media img{width:100%;height:100%;object-fit:cover}
.ec-product__cat{
  display:inline-block;font-size:12px;color:var(--accent);background:var(--accent-soft);
  padding:4px 12px;border-radius:2px;letter-spacing:.06em;margin-bottom:14px;
}
.ec-product__title{font-size:29px;font-weight:700;color:var(--navy);line-height:1.4;letter-spacing:-.01em}
.ec-product__alias{font-size:13.5px;color:var(--ink-3);margin-top:10px;letter-spacing:.02em}
.ec-product__excerpt{font-size:14.5px;line-height:1.9;color:var(--ink-2);margin-top:16px}
.ec-spec{width:100%;border-collapse:collapse;margin-top:24px;font-size:13.5px}
.ec-spec th{
  width:120px;text-align:left;padding:11px 14px;background:#f7f8fa;color:var(--ink-3);
  font-weight:400;border:1px solid var(--line-2);white-space:nowrap;
}
.ec-spec td{padding:11px 14px;border:1px solid var(--line-2);color:var(--ink)}
.ec-product__act{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.ec-product__note{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--ink-3);margin-top:18px}
.ec-product__note svg{color:var(--accent)}
.ec-product__detail{display:grid;grid-template-columns:1fr 340px;gap:52px;align-items:start}
.ec-product__aside{position:sticky;top:104px}
.ec-aside-card{background:#fff;border:1px solid var(--line);padding:26px 24px}
.ec-aside-card h3{font-size:17px;font-weight:700;color:var(--navy);margin-bottom:10px}
.ec-aside-card p{font-size:13.5px;color:var(--ink-2);line-height:1.85;margin-bottom:18px}
.ec-aside-card .ec-btn{width:100%}
.ec-aside-card__list{margin-top:20px;padding-top:18px;border-top:1px solid var(--line-2);font-size:13px;color:var(--ink-2)}
.ec-aside-card__list li{display:flex;align-items:flex-start;gap:8px;margin-bottom:9px;line-height:1.7}
.ec-aside-card__list svg{margin-top:4px;color:var(--accent);opacity:.8}
.ec-aside-card--tip ul{list-style:none;font-size:13.5px;color:var(--ink-2);line-height:1.95}
.ec-aside-card--tip li{position:relative;padding-left:16px;margin-bottom:6px}
.ec-aside-card--tip li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--accent)}
.ec-aside-card--tip strong{color:var(--navy);font-weight:600}

/* ---------- 筛选 ---------- */
/* 产品分类：两级导航（一级大类 + 二级小类） */
.ec-catnav{margin-bottom:34px}
.ec-catnav__main{display:flex;flex-wrap:wrap;gap:10px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.ec-filter{
  display:inline-flex;align-items:center;
  padding:9px 20px;border:1px solid var(--line);font-size:13.5px;color:var(--ink-2);
  background:#fff;transition:.2s;border-radius:2px;
}
.ec-filter:hover{border-color:var(--accent);color:var(--navy)}
.ec-filter.is-active{background:var(--navy);border-color:var(--navy);color:#fff}
.ec-filter__num{margin-left:7px;font-size:11.5px;opacity:.55;font-variant-numeric:tabular-nums}
.ec-filter.is-active .ec-filter__num{opacity:.82}
.ec-catnav__sub{display:flex;flex-wrap:wrap;align-items:flex-start;gap:14px 26px;margin-top:18px}
.ec-catnav__group{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.ec-catnav__label{font-size:12px;color:var(--ink-3);letter-spacing:.04em}
.ec-catnav__label::after{
  content:"";display:inline-block;width:1px;height:12px;
  background:var(--line);margin-left:12px;vertical-align:-2px;
}
.ec-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 15px;border-radius:999px;background:var(--bg-soft);
  font-size:13px;color:var(--ink-2);transition:.2s;
}
.ec-chip em{font-style:normal;font-size:11px;opacity:.5;font-variant-numeric:tabular-nums}
.ec-chip:hover{background:#e9eff7;color:var(--navy)}
.ec-chip.is-active{
  background:var(--accent-soft);color:var(--navy);font-weight:600;
  box-shadow:inset 0 0 0 1px rgba(82,157,186,.55);
}

/* ---------- 分页 ---------- */
.ec-pager{margin-top:44px}
.ec-pager .nav-links{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}
.ec-pager .page-numbers{
  min-width:40px;height:40px;display:grid;place-items:center;padding:0 12px;
  border:1px solid var(--line);font-size:13.5px;color:var(--ink-2);background:#fff;
}
.ec-pager .page-numbers:hover{border-color:var(--accent);color:var(--navy)}
.ec-pager .page-numbers.current{background:var(--navy);border-color:var(--navy);color:#fff}
.ec-pager .dots{border:0;background:none}

/* ---------- 空状态 / 404 ---------- */
.ec-empty{text-align:center;padding:70px 0;color:var(--ink-3)}
.ec-empty p{margin-bottom:20px}
.ec-404{text-align:center;padding:96px 0 110px}
.ec-404__code{font-size:110px;font-weight:800;line-height:1;color:var(--navy);opacity:.10;letter-spacing:-.04em}
.ec-404__title{font-size:26px;font-weight:700;color:var(--navy);margin-top:6px}
.ec-404__text{font-size:14.5px;color:var(--ink-2);margin:14px auto 0;max-width:460px}
.ec-404__act{display:flex;gap:12px;justify-content:center;margin:30px 0 40px}

/* ---------- 关于页 ---------- */
.ec-about-page{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:stretch}
.ec-about-page__media{display:flex}
.ec-about-page__media img,.ec-about-page__media .ec-ph{width:100%;height:100%;object-fit:cover}
.ec-about-page__media .ec-ph{aspect-ratio:3/4}

/* ---------- 联系页 ---------- */
.ec-contact{display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:start}
.ec-contact__intro{margin-bottom:30px}
.ec-infolist li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line-2)}
.ec-infolist__icon{
  width:40px;height:40px;flex:0 0 40px;display:grid;place-items:center;border-radius:50%;
  background:var(--accent-soft);color:var(--accent);
}
.ec-infolist em{display:block;font-style:normal;font-size:11.5px;letter-spacing:.1em;color:var(--ink-3);text-transform:uppercase;margin-bottom:2px}
.ec-infolist a,.ec-infolist li > div > span{display:block;font-size:14.5px;color:var(--ink);line-height:1.7}
.ec-infolist a:hover{color:var(--accent)}
.ec-contact__qr{margin-top:24px;display:flex;align-items:center;gap:14px;font-size:12.5px;color:var(--ink-3)}
.ec-contact__qr img{width:100px;height:100px;border:1px solid var(--line);padding:4px;background:#fff}
.ec-contact__map{
  margin-top:22px;height:220px;border:1px dashed #d5dce4;background:var(--bg-soft);
  display:grid;place-items:center;font-size:12.5px;color:var(--ink-3);text-align:center;padding:0 20px;
}

/* ---------- 询盘页 ---------- */
.ec-inquiry-layout{display:grid;grid-template-columns:1.35fr .8fr;gap:56px;align-items:start}
.ec-inquiry-layout__intro{margin-bottom:28px}
.ec-inquiry-layout__aside{display:grid;gap:20px;position:sticky;top:104px}

/* ---------- 表单 ---------- */
.ec-form{position:relative}
.ec-form__grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px}
.ec-field{margin-bottom:16px}
.ec-form__grid .ec-field{margin-bottom:0}
.ec-field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:7px}
.ec-field label i{font-style:normal;color:#c0392b}
.ec-field input,.ec-field textarea{
  width:100%;padding:12px 14px;border:1px solid #dfe4ea;background:#fff;border-radius:2px;
  font-size:14px;line-height:1.6;transition:border-color .18s,box-shadow .18s;
}
.ec-field input::placeholder,.ec-field textarea::placeholder{color:#b3bac4}
.ec-field input:focus,.ec-field textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(82,157,186,.12);
}
.ec-field textarea{resize:vertical;min-height:130px}
.ec-form .ec-btn{margin-top:6px}
.ec-form__tip{font-size:12px;color:var(--ink-3);margin-top:12px}
.ec-form__err{color:#c0392b;font-size:13px;margin-bottom:12px}
.ec-hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;opacity:0}

.ec-alert{padding:20px 24px;border-left:3px solid;font-size:14px;line-height:1.8;margin-bottom:26px}
.ec-alert--ok{background:#f0f8f3;border-color:#2e9e5b;color:#1d6b3d}
.ec-alert--ok strong{display:block;font-size:15.5px;margin-bottom:6px}
.ec-alert--err{background:#fdf3f2;border-color:#c0392b;color:#96281b}
.ec-alert p{margin:0;color:inherit;opacity:.9}
.ec-alert a{color:inherit;text-decoration:underline}

/* ---------- 资质证书 ---------- */
.ec-sec--certs{background:#fff}
.ec-certs{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}
.ec-cert{margin:0;display:flex;flex-direction:column}
.ec-cert__media{
  display:flex;align-items:center;justify-content:center;
  height:clamp(170px, 19vw, 270px);background:#fff;border:1px solid var(--line);padding:10px;
  transition:border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.ec-cert__media img{display:block;width:100%;height:100%;object-fit:contain}
.ec-cert__media:hover{
  border-color:var(--accent);transform:translateY(-3px);
  box-shadow:0 12px 26px rgba(19,50,112,.10);
}
.ec-cert__label{
  margin-top:12px;font-size:13px;color:var(--ink-2);line-height:1.7;text-align:center;
}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .ec-menu > li > a{padding:0 13px;font-size:14.5px}
  .ec-menu > li > a::after{left:13px;right:13px}
  .ec-grid--4{grid-template-columns:repeat(3,1fr)}
  .ec-feats{grid-template-columns:repeat(2,1fr)}
  .ec-product__top{grid-template-columns:380px 1fr;gap:36px}
  .ec-product__detail{grid-template-columns:1fr 300px;gap:36px}
  .ec-footer__grid{grid-template-columns:1.4fr 1fr 1fr;gap:34px}
  .ec-footer__col:last-child{grid-column:1/-1}
}
@media (max-width:960px){
  .ec-header__in{height:72px}
  .ec-menu > li > a{height:72px;line-height:72px}
  .ec-nav{
    position:fixed;top:0;right:-100%;width:86%;max-width:340px;height:100vh;
    background:#fff;padding:88px 22px 30px;overflow-y:auto;z-index:95;
    box-shadow:-16px 0 40px -20px rgba(0,0,0,.4);transition:right .3s ease;margin-left:0;
  }
  .ec-nav.is-open{right:0}
  .ec-menu{display:block}
  .ec-menu > li > a{height:auto;line-height:1.6;padding:13px 0;border-bottom:1px solid var(--line-2);font-size:15px}
  .ec-menu > li > a::after{display:none}
  .ec-menu > .menu-item-has-children::after{right:2px;margin-top:-2px;opacity:.5}
  .ec-menu > li.is-open::after{transform:rotate(-135deg);margin-top:-6px;opacity:.9}
  .ec-menu .sub-menu{
    position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;
    padding:0 0 0 14px;display:none;
  }
  .ec-menu li.is-open > .sub-menu{display:block}
  .ec-menu .sub-menu a{padding:9px 0;border-bottom:1px dashed var(--line-2)}
  .ec-burger{display:flex;position:relative;z-index:96}
  .ec-hide-md{display:none!important}
  .ec-hero__track{min-height:480px}
  .ec-hero__body{padding:96px 24px 96px}
  .ec-about{grid-template-columns:1fr;gap:34px}
  .ec-about__media{order:2}
  .ec-product__top{grid-template-columns:1fr}
  .ec-product__media{max-width:460px}
  .ec-product__detail{grid-template-columns:1fr}
  .ec-product__aside{position:static}
  .ec-contact,.ec-inquiry-layout,.ec-about-page{grid-template-columns:1fr;gap:34px}
  .ec-inquiry-layout__aside{position:static}
  .ec-cta__in{flex-direction:column;align-items:flex-start;gap:24px}
  .ec-stats-band__in{grid-template-columns:repeat(2,1fr);gap:30px}
  .ec-certs{grid-template-columns:repeat(2,1fr);gap:18px}
}
@media (max-width:760px){
  .ec-wrap{padding:0 18px}
  .ec-sec{padding:54px 0}
  .ec-topbar__item--hide-sm{display:none}
  .ec-topbar__in{height:36px;font-size:12px}
  .ec-topbar__quote{padding-left:14px}
  .ec-header__in{gap:12px}
  .ec-logo{max-width:calc(100% - 100px)}
  .ec-logo img{max-height:44px}
  .ec-logo__txt strong{font-size:16px;max-width:100%}
  .ec-logo__txt em{display:none}
  .ec-logo__mark{width:36px;height:36px;font-size:19px}
  .ec-grid--4,.ec-grid--3{grid-template-columns:repeat(2,1fr);gap:14px}
  .ec-card__body{padding:14px 14px 12px}
  .ec-card__title{font-size:14.5px}
  .ec-card__meta{font-size:12px}
  .ec-feats{grid-template-columns:1fr}
  .ec-feat{padding:24px 20px}
  .ec-stats{grid-template-columns:repeat(2,1fr);gap:18px}
  .ec-head__title{font-size:23px}
  .ec-head-row{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:26px}
  .ec-hero__track{min-height:420px}
  .ec-hero__body{padding:78px 18px 82px}
  .ec-hero__sub{font-size:14.5px;margin-top:14px}
  .ec-hero__act{margin-top:28px}
  .ec-newsitem{flex-direction:column;align-items:flex-start;gap:8px;padding:18px 2px}
  .ec-newsitem time{flex:none}
  .ec-newsitem__arrow{display:none}
  .ec-form__grid{grid-template-columns:1fr;gap:0}
  .ec-form__grid .ec-field{margin-bottom:16px}
  .ec-product__title{font-size:23px}
  .ec-spec th{width:96px;font-size:12.5px;padding:9px 11px}
  .ec-spec td{font-size:12.5px;padding:9px 11px}
  .ec-article,.ec-pagehead{padding-left:0;padding-right:0}
  .ec-footer__grid{grid-template-columns:1fr;gap:30px;padding:44px 0}
  .ec-totop{right:16px;bottom:18px;width:40px;height:40px}
  .ec-404__code{font-size:84px}
  .ec-postnav .nav-links{flex-direction:column}
}
@media (max-width:760px){
  .ec-catnav{margin-bottom:26px}
  .ec-catnav__main{gap:8px;padding-bottom:14px}
  .ec-filter{padding:8px 15px;font-size:13px}
  .ec-catnav__sub{gap:12px;margin-top:14px}
  .ec-catnav__group{width:100%;gap:7px}
  .ec-chip{padding:5px 13px;font-size:12.5px}
}
@media (max-width:560px){
  .ec-topbar__in{gap:10px}
  .ec-topbar__left{gap:12px;overflow:hidden}
  .ec-topbar__item:nth-child(2){display:none}
  .ec-topbar__quote{padding-left:12px}
}
@media (max-width:480px){
  .ec-grid--4,.ec-grid--3{grid-template-columns:1fr}
  .ec-card__media{aspect-ratio:4/3}
}

/* ---------- 产品图集（补充图片） ---------- */
.ec-product__gallery{display:flex;flex-direction:column;gap:14px}
.ec-product__thumbs{display:flex;flex-wrap:wrap;gap:10px}
.ec-product__thumbs .ec-thumb{
  width:78px;height:78px;padding:0;border:1px solid var(--line);background:#fff;cursor:pointer;
  overflow:hidden;display:grid;place-items:center;transition:border-color .18s,box-shadow .18s;
}
.ec-product__thumbs .ec-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.ec-product__thumbs .ec-thumb:hover,
.ec-product__thumbs .ec-thumb.is-active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}

/* ---------- 3A 认证 ---------- */
.ec-certs--aaa{grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:960px){
  .ec-certs--aaa{grid-template-columns:repeat(2,1fr);gap:16px}
  .ec-product__thumbs .ec-thumb{width:64px;height:64px}
}

/* ---------- 新闻正文图片组 ---------- */
.ec-news-gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:22px 0}
.ec-news-gallery img{width:100%;height:100%;object-fit:cover;display:block;border:1px solid var(--line)}
.ec-news-gallery--3{grid-template-columns:repeat(3,1fr)}
@media (max-width:760px){.ec-news-gallery,.ec-news-gallery--3{grid-template-columns:1fr}}

/* ---------- 关于我们：资质卡片 / 经营理念 ---------- */
.ec-quals{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:0 0 34px}
.ec-qual{
  display:flex;align-items:center;gap:13px;padding:16px 18px;background:#fff;
  border:1px solid var(--line);text-decoration:none;transition:border-color .18s,box-shadow .18s,transform .18s;
}
.ec-qual:hover{border-color:var(--accent);box-shadow:0 8px 22px rgba(19,50,112,.07);transform:translateY(-2px)}
.ec-qual__ico{
  flex:none;width:40px;height:40px;border-radius:50%;background:var(--accent-soft);
  color:var(--navy);display:grid;place-items:center;
}
.ec-qual__txt{min-width:0}
.ec-qual__txt strong{display:block;font-size:14px;font-weight:600;color:var(--navy);line-height:1.5}
.ec-qual__txt em{display:block;font-style:normal;font-size:12px;color:var(--ink-3);margin-top:2px}

.ec-sec--idea{background:var(--bg-soft);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.ec-idea{display:grid;grid-template-columns:230px 1fr;gap:48px;align-items:start}
.ec-idea__head{position:relative;padding-left:18px}
.ec-idea__head::before{
  content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;background:var(--accent);
}
.ec-idea__kicker{display:block;font-size:11px;letter-spacing:.18em;color:var(--accent);margin-bottom:8px}
.ec-idea__title{font-size:22px;font-weight:700;color:var(--navy);letter-spacing:.02em}
.ec-idea__text{font-size:16px;line-height:2.05;color:var(--ink-2)}
.ec-idea__text p{margin:0}
.ec-idea__text p + p{margin-top:14px}

@media (max-width:1080px){
  .ec-about-page__media img,.ec-about-page__media .ec-ph{height:auto;aspect-ratio:4/3}
  .ec-quals{grid-template-columns:repeat(2,1fr)}
  .ec-idea{grid-template-columns:1fr;gap:20px}
}
@media (max-width:640px){
  .ec-quals{grid-template-columns:1fr;gap:10px;margin-bottom:26px}
  .ec-idea__text{font-size:15px;line-height:1.95}
}

/* 经营理念里如果是列表，去掉默认圆点，排成短句 */
.ec-idea__text ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px 26px}
.ec-idea__text li{position:relative;padding-left:16px}
.ec-idea__text li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--accent);border-radius:50%}

/* 英文 / 越南语资质名称较长，卡片两列更好读 */
html[lang="en"] .ec-quals,
html[lang="vi"] .ec-quals{grid-template-columns:repeat(2,1fr)}