/* =========================================================
   CHANGXUE  —  High-end corporate promotional website
   Ref: liaohemetal.com sandwich_panel layout language,
   executed as a premium manufacturer site.
   ========================================================= */

:root{
  --ink:#0b1f3a;
  --primary:#12396b;
  --primary-2:#0a2547;
  --cyan:#0aa8c2;
  --cyan-2:#0bc7d6;
  --accent:#f6a623;
  --accent-2:#ffbe4d;
  --bg:#ffffff;
  --soft:#f4f7fb;
  --soft-2:#eaf0f7;
  --line:#e4eaf2;
  --muted:#6b7a90;
  --text:#27384e;
  --shadow-sm:0 1px 2px rgba(10,37,71,.05),0 6px 18px rgba(10,37,71,.06);
  --shadow:0 10px 40px rgba(10,37,71,.12);
  --radius:10px;
  --container:1240px;
  --serif:"Noto Serif SC",Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:140px}   /* 140px = 吸顶的 topbar(45) + header(85)，锚点跳转后标题不被遮住 */
body{margin:0;font-family:var(--sans);color:var(--text);background:var(--bg);line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{color:var(--ink);line-height:1.2;margin:0}
p{margin:0}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 26px;border-radius:8px;font-weight:700;font-size:15px;cursor:pointer;border:1px solid transparent;transition:.22s;white-space:nowrap}
.btn--primary{background:var(--accent);color:#3a2400;box-shadow:0 6px 18px rgba(246,166,35,.35)}
.btn--primary:hover{background:var(--accent-2);transform:translateY(-2px)}
.btn--ghost{background:#fff;color:var(--primary);border-color:var(--primary);box-shadow:0 6px 18px rgba(8,24,48,.18)}
.btn--ghost:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn--white{background:#fff;color:var(--primary,#0a2547);border-color:#fff;box-shadow:0 6px 18px rgba(0,0,0,.18)}
.btn--white:hover{background:#f6a623;color:#3a2400;border-color:#f6a623}
.btn--cyan{background:var(--cyan);color:#fff;box-shadow:0 6px 18px rgba(10,168,194,.3)}
.btn--cyan:hover{background:var(--cyan-2);transform:translateY(-2px)}
.btn--outline{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn--outline:hover{background:var(--primary);color:#fff}
.btn--sm{padding:9px 18px;font-size:13px}
.btn--lg{padding:16px 34px;font-size:16px}
.btn--block{display:flex;width:100%;justify-content:center}

/* ---------- topbar ---------- */
.topbar{position:sticky;top:0;z-index:101;background:var(--primary-2);color:#c3d2e6;font-size:14.5px;padding:9px 0;line-height:1.5}
.topbar__inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px 6px}
.topbar a{color:#c3d2e6}
.topbar a:hover{color:#fff}
.topbar .sep{margin:0 10px;opacity:.45}
.topbar .hot{color:var(--accent-2);font-weight:600}
.topbar strong{color:#fff;font-weight:700}

/* ---------- topbar: WhatsApp / WeChat icon buttons ---------- */
.topbar__meta{display:flex;align-items:center;flex-wrap:wrap;gap:4px 0}
.topbar__im{position:relative;display:inline-flex;align-items:center;gap:8px}
.topbar .im-btn{
  display:inline-flex;align-items:center;gap:7px;padding:4px 12px 4px 10px;border-radius:999px;
  border:1px solid transparent;font:inherit;font-size:13.5px;font-weight:700;line-height:1.25;
  color:#fff;cursor:pointer;white-space:nowrap;transition:transform .2s,background .2s,box-shadow .2s,border-color .2s;
}
.topbar .im-btn svg{width:16px;height:16px;display:block;flex:0 0 auto;fill:currentColor}
.topbar .im-btn--wa{background:#25d366;border-color:#25d366;box-shadow:0 4px 14px rgba(37,211,102,.32)}
.topbar .im-btn--wa:hover{background:#1bb257;border-color:#1bb257;color:#fff;transform:translateY(-1px);box-shadow:0 7px 20px rgba(37,211,102,.45)}
.topbar .im-btn--wx{background:#07c160;border-color:#07c160;box-shadow:0 4px 14px rgba(7,193,96,.32)}
.topbar .im-btn--wx:hover{background:#06a852;border-color:#06a852;color:#fff;transform:translateY(-1px);box-shadow:0 7px 20px rgba(7,193,96,.45)}
.topbar .im-btn[aria-expanded="true"]{box-shadow:0 0 0 3px rgba(255,255,255,.28),0 6px 18px rgba(4,16,34,.35)}

/* popover card */
.contact-pop{
  position:absolute;top:calc(100% + 12px);right:0;width:338px;box-sizing:border-box;
  background:#fff;color:var(--text);border:1px solid var(--line);border-radius:16px;
  box-shadow:0 24px 64px rgba(6,20,40,.34),0 2px 6px rgba(6,20,40,.1);
  padding:18px 18px 16px;font-size:14px;line-height:1.6;font-weight:400;text-align:left;
  opacity:0;visibility:hidden;transform:translateY(-8px) scale(.985);transform-origin:top right;
  transition:opacity .18s ease,transform .18s ease,visibility .18s;z-index:210;
}
.contact-pop.is-open{opacity:1;visibility:visible;transform:none}
.contact-pop::before{content:"";position:absolute;top:-6px;right:var(--caret-r,30px);width:12px;height:12px;background:#fff;border-left:1px solid var(--line);border-top:1px solid var(--line);transform:rotate(45deg);border-radius:2px}
.contact-pop__x{position:absolute;top:9px;right:11px;width:26px;height:26px;border:0;border-radius:8px;background:transparent;color:#9aa9bd;font-size:20px;line-height:1;cursor:pointer;padding:0;font-family:inherit}
.contact-pop__x:hover{color:var(--ink);background:var(--soft)}
.contact-pop__pane{display:none}
.contact-pop__pane.is-on{display:block}
.contact-pop h4{margin:0;font-size:16px;color:var(--ink)}
.cp-head{display:flex;align-items:center;gap:11px;margin:0 26px 13px 0}
.cp-ic{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;flex:0 0 auto;color:#fff}
.cp-ic svg{width:23px;height:23px;fill:currentColor}
.cp-ic--wa{background:#25d366;box-shadow:0 6px 16px rgba(37,211,102,.3)}
.cp-ic--wx{background:#07c160;box-shadow:0 6px 16px rgba(7,193,96,.3)}
.cp-head small{display:block;font-size:12.5px;color:var(--muted);line-height:1.45}
.cp-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;border-top:1px solid var(--line);font-size:13.5px}
.cp-k{color:var(--muted);flex:0 0 auto}
.cp-v{color:var(--ink);font-weight:700;letter-spacing:.2px;text-align:right;word-break:break-all}
.cp-acts{display:flex;flex-direction:column;gap:8px;margin-top:13px}
.cp-btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:11px 14px;border:0;border-radius:9px;font-family:inherit;font-size:14px;font-weight:700;cursor:pointer;transition:.2s;color:#fff;text-decoration:none}
.contact-pop a.cp-btn--wa{color:#fff}   /* 盖过 .topbar a 的浅色链接色（仅作用于链接按钮） */
.cp-btn svg{width:17px;height:17px;fill:currentColor;flex:0 0 auto}
.cp-btn--wa{background:#25d366;box-shadow:0 6px 18px rgba(37,211,102,.3)}
.cp-btn--wa:hover{background:#1bb257;color:#fff;transform:translateY(-1px)}
.cp-btn--wx{background:#07c160;box-shadow:0 6px 18px rgba(7,193,96,.3)}
.cp-btn--wx:hover{background:#06a852;color:#fff;transform:translateY(-1px)}
.cp-btn--ghost{background:#fff;color:var(--primary);border:1px solid var(--line);box-shadow:none}
.cp-btn--ghost:hover{background:var(--soft);color:var(--primary);border-color:#cfdae8}
.cp-btn.is-done{background:var(--primary)!important;color:#fff!important}
.cp-qr{margin-top:13px;padding-top:13px;border-top:1px solid var(--line);text-align:center}
.cp-qr img{width:152px;height:152px;margin:0 auto 8px;border-radius:10px;border:1px solid var(--line);background:#fff}
.cp-qr span{display:block;font-size:12.5px;color:var(--muted);line-height:1.5}
.cp-hint{margin-top:12px;background:var(--soft);border-radius:9px;padding:9px 11px;font-size:12.5px;line-height:1.6;color:var(--muted)}
.cp-hint b{color:var(--ink);font-weight:700}

/* ---------- header ---------- */
.header{position:sticky;top:var(--topbar-h,45px);z-index:100;background:rgba(255,255,255,.92);backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line);transition:.25s}
.header.scrolled{box-shadow:0 6px 24px rgba(10,37,71,.08)}
.header__inner{display:flex;align-items:center;gap:26px;padding:14px 24px}
.brand{display:flex;align-items:center;gap:12px}
.brand__txt b{display:block;font-size:22px;color:var(--primary);letter-spacing:.4px;line-height:1}
.brand__txt em{display:block;font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.5px;margin-top:3px}
.brand__img{display:block;height:48px;width:auto}
.footer .brand{display:inline-flex;align-items:center;padding:12px 18px;background:linear-gradient(145deg,#f2f7fc,#dde9f6);border-radius:12px;box-shadow:0 4px 14px rgba(0,0,0,.22);margin-bottom:18px;transition:transform .25s ease,box-shadow .25s ease}
.footer .brand:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(0,0,0,.32)}
.footer .brand__img{height:58px;width:auto;display:block}
@media (max-width:860px){.brand__img{height:42px}.footer .brand__img{height:50px}}
.header__nav{margin-left:auto}
.header__nav>ul{display:flex;gap:4px}
.header__nav li{position:relative}
.header__nav>ul>li>a{display:block;padding:14px 16px;font-weight:600;color:var(--ink);font-size:15px;position:relative}
.header__nav>ul>li>a::after{content:"";position:absolute;left:16px;right:16px;bottom:8px;height:2px;background:var(--cyan);transform:scaleX(0);transition:.25s;transform-origin:left}
.header__nav>ul>li:hover>a::after,.header__nav>ul>li.active>a::after{transform:scaleX(1)}
.header__nav>ul>li>a:hover{color:var(--primary)}
.header__cta{display:flex;gap:10px;align-items:center;margin-left:18px}
.header__menu{display:none;background:none;border:0;font-size:24px;color:var(--primary);cursor:pointer}

/* dropdown */
.dropdown{position:absolute;top:100%;left:0;min-width:280px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 8px 8px;padding:8px;display:none;z-index:200}
.header__nav li:hover .dropdown{display:block}
.dropdown a{display:flex;gap:10px;align-items:center;padding:9px 12px;border-radius:6px;font-size:14px;color:var(--text)}
.dropdown a:hover{background:var(--soft);color:var(--primary)}
.dropdown a .ic{width:8px;height:8px;border-radius:2px;background:var(--cyan);flex-shrink:0}

/* ---------- hero (TEXT BAND on navy + PRODUCT CAROUSEL below, fully separated) ---------- */
.hero{background:#fff;color:#12396b;overflow:hidden;isolation:isolate}

/* top: navy text band — text sits on solid navy, never on the product image */
.hero__band{
  background:linear-gradient(120deg,#0a2547 0%,#12396b 55%,#0e4576 100%);
  color:#fff;
  padding:48px 0 42px;
  position:relative;
}
.hero__band::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:24px;background:linear-gradient(180deg,rgba(10,37,71,0) 0%,#fff 100%);pointer-events:none}
.hero__band-inner{max-width:1120px;margin:0 auto;text-align:center;padding:0 24px;position:relative;z-index:2}
.hero__band-inner .hero__eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(246,166,35,.18);border:1px solid rgba(246,166,35,.55);color:#f6a623;
  padding:6px 16px;border-radius:30px;font-size:12.5px;font-weight:700;letter-spacing:1.8px;
  text-transform:uppercase;margin-bottom:22px;
}
.hero__band-inner h1{
  font-size:clamp(34px,4.6vw,54px);
  font-weight:800;letter-spacing:-.5px;line-height:1.18;margin:0 0 18px;
  color:#fff;
}
.hero__band-inner h1 .accent{color:#f6a623}
.hero__band-inner .hero__lead{
  font-size:16.5px;color:#cfe0f2;max-width:760px;margin:0 auto 28px;line-height:1.7;font-weight:400;
}
.hero__band-inner .hero__cta{justify-content:center}

/* 公司介绍：纯文本、宽幅横铺、无文本框；字号大于下方 hero__lead */
.hero__band-inner .hero__intro{
  font-size:19px;line-height:1.8;font-weight:400;color:#e8f1fb;letter-spacing:.1px;
  max-width:1040px;margin:0 auto 18px;
}

/* bottom: product carousel — image area is fully separate from the text band */
.hero__gallery{position:relative;background:#fff;padding:26px 24px 30px;max-width:1440px;margin:0 auto}
.hero__gallery-stage{
  position:relative;width:100%;
  aspect-ratio:16/10;
  border-radius:14px;overflow:hidden;
  box-shadow:0 18px 50px rgba(8,24,48,.18),0 1px 0 rgba(255,255,255,.6) inset;
  background:#0a2547;
}
.hero__gallery-stage .pcarousel__slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .65s ease,transform 1.2s ease;transform:scale(1.04)}
.hero__gallery-stage .pcarousel__slide.is-active{opacity:1;visibility:visible;z-index:1;transform:scale(1)}
.hero__gallery-stage .pcarousel__slide img{width:100%;height:100%;display:block;object-fit:cover;object-position:center center}
/* 备用工具类：图片比例与 stage(16/10) 不一致时可整图显示，但会产生上下深蓝留白（蓝边），
   现已默认不用——hero_panel_line.jpg 已扩图为 16:10，与其它轮播图同样走 cover */
.hero__gallery-stage .pcarousel__slide img.is-contain{object-fit:contain;background:#0a2547}

/* prev/next arrows sit on the image, not on the text */
.pcarousel__nav{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:46px;height:46px;border:none;border-radius:50%;background:rgba(255,255,255,.92);color:#12396b;font-size:26px;line-height:1;cursor:pointer;box-shadow:0 8px 22px rgba(8,24,48,.30);transition:.25s;display:flex;align-items:center;justify-content:center;padding-bottom:3px;font-weight:700}
.pcarousel__nav:hover{background:#12396b;color:#fff;transform:translateY(-50%) scale(1.06)}
.hero__gallery .pcarousel__nav--prev{left:14px}
.hero__gallery .pcarousel__nav--next{right:14px}

/* meta bar: 单独一层，和上面的图片明确断开（有自己的底色/描边/圆角） */
.hero__gallery-meta{
  display:flex;align-items:center;gap:18px;
  margin-top:20px;padding:14px 16px;flex-wrap:wrap;
  background:#f7f9fc;border:1px solid #e3e8ef;border-radius:12px;
  box-shadow:0 1px 2px rgba(16,24,40,.04);
}
.pcarousel__caption{flex:1 1 auto;color:#0a2547;font-size:19px;line-height:1.35;font-weight:700;letter-spacing:.2px;padding-left:14px;border-left:3px solid #f6a623;min-width:200px}
.pcarousel__thumbs{display:flex;justify-content:center;gap:7px;padding:5px;background:#fff;border-radius:8px;border:1px solid #e1e8f1}
.pcarousel__thumb{flex:0 0 auto;width:64px;height:42px;border-radius:5px;overflow:hidden;cursor:pointer;opacity:.55;border:2px solid transparent;transition:.25s;padding:0;background:transparent}
.pcarousel__thumb img{width:100%;height:100%;object-fit:cover;display:block}
.pcarousel__thumb:hover{opacity:.95;transform:translateY(-2px)}
.pcarousel__thumb.is-active{opacity:1;border-color:#f6a623;transform:translateY(-2px);box-shadow:0 4px 12px rgba(246,166,35,.4)}
.pcarousel__counter{background:#0a2547;color:#fff;font-size:12px;font-weight:700;letter-spacing:1.5px;padding:6px 12px;border-radius:20px}
@keyframes scroll{0%{transform:scaleY(.2);transform-origin:top}50%{transform:scaleY(1)}100%{transform:scaleY(.2);transform-origin:bottom}}

/* ---------- stats ---------- */
.stats{background:linear-gradient(180deg,var(--primary) 0%,var(--primary-2) 100%);color:#fff;position:relative;margin-top:-1px}
/* 单行水平排列：数字与文字同字号，整体连成一条水平线 */
.stats__inner{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;padding:22px 14px;max-width:1480px;margin:0 auto}
.stat{display:inline-flex;align-items:baseline;white-space:nowrap;border-right:1px solid rgba(255,255,255,.12);padding:2px 20px}
.stat:last-child{border-right:0}
.stat b{display:inline;font-size:19px;font-weight:800;line-height:1.5;color:#fff;letter-spacing:0}
.stat b em{font-style:normal;font-size:19px;color:var(--accent-2)}
.stat span{display:inline;margin-left:7px;font-size:19px;font-weight:600;color:#fff;letter-spacing:.2px}

/* ---------- section frame ---------- */
.section{padding:92px 0}
.section--soft{background:var(--soft)}
.section__head{text-align:center;max-width:720px;margin:0 auto 54px}
.section__head .kicker{display:inline-block;color:var(--cyan);font-weight:700;font-size:13px;letter-spacing:3px;text-transform:uppercase;margin-bottom:14px}
.section__head h2{font-size:clamp(28px,3.4vw,40px);font-weight:800;letter-spacing:-.4px}
.section__head p{margin-top:16px;color:var(--muted);font-size:16px}
.section__head .bar{width:54px;height:4px;background:var(--accent);border-radius:3px;margin:22px auto 0}

/* ---------- product categories ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cat{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:.28s;display:flex;flex-direction:column}
.cat:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--cyan)}
.cat__img{height:172px;overflow:hidden;background:var(--soft-2)}
.cat__img img{width:100%;height:100%;object-fit:contain;background:#fff;padding:14px;transition:transform .5s}
.cat:hover .cat__img img{transform:scale(1.04)}
.cat__body{padding:18px 20px 20px}
.cat__no{font-size:12px;font-weight:800;color:var(--cyan);letter-spacing:2px}
.cat h3{font-size:17px;margin:6px 0 8px;font-weight:700}
.cat p{font-size:13px;color:var(--muted);line-height:1.6}
.cat__more{margin-top:14px;color:var(--primary);font-weight:700;font-size:13px;display:inline-flex;align-items:center;gap:6px}
.cat:hover .cat__more{color:var(--cyan)}

/* ---------- product carousel (horizontal) ---------- */
.product-carousel{position:relative}
.product-track{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;padding:6px 2px 20px}
.product-track::-webkit-scrollbar{height:8px}
.product-track::-webkit-scrollbar-track{background:transparent}
.product-track::-webkit-scrollbar-thumb{background:var(--line);border-radius:8px}
.product-track::-webkit-scrollbar-thumb:hover{background:#cdd9e8}
.product-track .cat{flex:0 0 290px;scroll-snap-align:start}
.carousel-btn{position:absolute;top:46%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:6;color:var(--primary);font-size:22px;line-height:1;transition:.2s;padding:0}
.carousel-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.carousel-btn:disabled{opacity:.35;cursor:default;background:#fff;color:var(--muted);border-color:var(--line)}
.carousel-btn.prev{left:-10px}
.carousel-btn.next{right:-10px}

/* ---------- featured (alternating) ---------- */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:0;align-items:stretch;border-radius:14px;overflow:hidden;box-shadow:var(--shadow);background:#fff;margin-bottom:30px}
.feature__media{position:relative;min-height:340px;overflow:hidden}
.feature__media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:.6s}
.feature:hover .feature__media img{transform:scale(1.05)}
.feature__media .tag{position:absolute;top:18px;left:18px;background:var(--accent);color:#3a2400;font-size:12px;font-weight:800;padding:6px 14px;border-radius:30px;letter-spacing:1px}
.feature__body{padding:46px 46px;display:flex;flex-direction:column;justify-content:center}
.feature__body .no{font-size:13px;font-weight:800;color:var(--cyan);letter-spacing:2px}
.feature__body h3{font-size:26px;font-weight:800;margin:8px 0 14px}
.feature__body .desc{color:var(--muted);font-size:15px;margin-bottom:22px}
.feature__list li{display:flex;gap:12px;padding:9px 0;border-top:1px dashed var(--line);font-size:14.5px;color:var(--text)}
.feature__list li:first-child{border-top:0}
.feature__list .dot{width:22px;height:22px;border-radius:50%;background:var(--soft-2);color:var(--cyan);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;flex-shrink:0;margin-top:2px}
.feature__body .acts{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap}
.feature--rev .feature__media{order:2}

/* ---------- solutions ---------- */
.sol-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:16px}
.sol{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 18px;text-align:center;transition:.25s;box-shadow:var(--shadow-sm)}
.sol:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--cyan)}
.sol .ic{width:54px;height:54px;margin:0 auto 14px;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--cyan));display:flex;align-items:center;justify-content:center;font-size:26px}
.sol h4{font-size:14.5px;font-weight:700;color:var(--ink)}
.sol p{font-size:12px;color:var(--muted);margin-top:6px}

/* ---------- why choose / strength ---------- */
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
/* 让 r 与 n 之间留一点间隙，避免连在一起看着像字母 m */
.rn-gap{margin-right:.7px}
.why__item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px;transition:.25s;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.why__item::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--cyan),var(--accent))}
.why__item:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.why__item .qn{font-size:34px;font-weight:800;color:var(--soft-2);line-height:1;position:absolute;top:18px;right:22px}
/* ---------- product lines showcase (Core Production Lines) ---------- */
#product-lines{background:var(--bg)}
.pl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.pl-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:.3s;display:flex;flex-direction:column}
.pl-card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:var(--cyan)}
.pl-card__img{height:220px;overflow:hidden;background:var(--soft-2)}
.pl-card__img img{width:100%;height:100%;object-fit:cover;transition:.55s}
.pl-card__img img.fit-contain{object-fit:contain;background:#fff}
.pl-card:hover .pl-card__img img{transform:scale(1.06)}
.pl-card__body{padding:22px 22px 26px;flex:1;display:flex;flex-direction:column}
.pl-card__no{font-size:12px;font-weight:800;color:var(--accent);letter-spacing:2.5px;text-transform:uppercase}
.pl-card h3{font-size:18px;margin:8px 0 10px;font-weight:700;color:var(--ink);line-height:1.25}
.pl-card p{font-size:14px;color:var(--muted);line-height:1.65;flex:1;margin-bottom:16px}
.pl-card__link{font-size:14px;font-weight:700;color:var(--cyan);transition:.22s;align-self:flex-start}
.pl-card__link:hover{color:var(--primary);gap:4px}
@media (max-width:1024px){.pl-grid{grid-template-columns:repeat(2,1fr);gap:18px}.pl-card__img{height:190px}}
@media (max-width:640px){.pl-grid{grid-template-columns:1fr}.pl-card__img{height:220px}}

.why__item .ic{width:46px;height:46px;border-radius:12px;background:var(--soft-2);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px}
.why__item h4{font-size:16px;font-weight:700;margin-bottom:14px;line-height:1.35;color:var(--primary)}
.why__list{list-style:none;padding:0;margin:0}
.why__list li{position:relative;padding-left:18px;font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:8px}
.why__list li::before{content:"";position:absolute;left:2px;top:9px;width:6px;height:6px;border-radius:50%;background:var(--primary)}
.why__list li:last-child{margin-bottom:0}

/* ---------- factory gallery ---------- */
.factory__inner{display:grid;grid-template-columns:1fr 1.25fr;gap:48px;align-items:center}
.factory__txt h2{font-size:clamp(26px,3vw,36px);font-weight:800;margin-bottom:16px}
.factory__txt .kicker{color:var(--cyan);font-weight:700;letter-spacing:3px;font-size:13px;text-transform:uppercase}
.factory__txt p{color:var(--muted);margin:14px 0 22px;font-size:15px}
.factory__list li{display:flex;gap:12px;padding:8px 0;font-size:14.5px}
.factory__list .ck{color:var(--cyan);font-weight:800}
.factory__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.factory__grid img{border-radius:10px;height:200px;width:100%;object-fit:cover;transition:.4s}
.factory__grid img:hover{transform:scale(1.03)}

/* ---------- certs (3x3 grid with captions + lightbox) ---------- */
.certs-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cert-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:var(--shadow-sm);transition:.3s;cursor:zoom-in;display:flex;flex-direction:column;text-decoration:none;color:inherit}
.cert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--cyan)}
.cert-card__img{background:linear-gradient(180deg,#f7fafc 0%,#eef3f8 100%);padding:18px;height:220px;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--line)}
.cert-card__img img{max-width:100%;max-height:100%;object-fit:contain;mix-blend-mode:multiply}
.cert-card__cap{padding:16px 18px 18px;flex:1}
.cert-card__no{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--cyan);background:#e6f6f8;padding:3px 8px;border-radius:4px;margin-bottom:8px}
.cert-card__cap h4{font-size:15px;font-weight:700;color:var(--primary);margin:0 0 4px;line-height:1.35}
.cert-card__cap p{font-size:12.5px;color:#5a6c82;margin:0 0 6px;line-height:1.4}
.cert-card__cap .issuer{font-size:11.5px;color:#8499ad;font-style:italic}

/* ---------- certificate category page ---------- */
.page-hero{background:linear-gradient(120deg,var(--primary) 0%,var(--primary-2) 70%,#06182f 100%);color:#fff;padding:118px 0 66px;position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;border-radius:50%;background:radial-gradient(rgba(10,168,194,.38),transparent 70%)}
.page-hero .container{position:relative;z-index:2}
.page-hero .kicker{display:inline-block;color:var(--accent-2);font-weight:700;letter-spacing:3px;font-size:13px;text-transform:uppercase;margin-bottom:14px}
.page-hero h1{font-size:clamp(30px,4vw,46px);font-weight:800;margin:0 0 14px;letter-spacing:-.5px;color:#fff;text-shadow:0 2px 18px rgba(0,0,0,.25)}
.page-hero p{color:#cfe0f2;max-width:640px;font-size:16px}

/* ===== About Us page (sidebar categories + content panels) ===== */
.about-section{padding:64px 0 96px;background:var(--bg)}
.about-layout{display:grid;grid-template-columns:280px 1fr;gap:48px;align-items:start}

/* sticky sidebar */
.about-side{position:sticky;top:104px;background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;align-self:start}
.about-side__title{font-size:14px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin:0 0 16px;font-weight:700}
.about-side__list{display:flex;flex-direction:column;gap:4px}
.about-side__item{position:relative;padding:12px 16px;border-radius:8px;cursor:pointer;color:var(--text);font-weight:600;font-size:15px;border:1px solid transparent;transition:background .18s,border-color .18s,color .18s;user-select:none}
.about-side__item:hover{background:#fff;color:var(--primary)}
.about-side__item.is-active{background:var(--primary);color:#fff;border-color:var(--primary)}
.about-side__item.is-active::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:20px;border-radius:0 4px 4px 0;background:var(--cyan)}

/* content panels */
.about-content{min-height:360px}
.about-panel{display:none;animation:aboutFade .32s ease}
.about-panel.is-active{display:block}
@keyframes aboutFade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.about-panel h2{font-size:clamp(24px,3vw,32px);margin:0 0 18px;position:relative;padding-bottom:14px}
.about-panel h2::after{content:"";position:absolute;left:0;bottom:0;width:54px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--primary),var(--cyan))}
.about-panel p{color:var(--text);margin:0 0 14px;font-size:15.5px}
.about-block{background:var(--soft);border:1px solid var(--line);border-left:3px solid var(--cyan);border-radius:10px;padding:18px 20px;margin:0 0 16px}
.about-block h4{color:var(--primary);font-size:16px;margin:0 0 8px}
.about-block p{margin:0;color:var(--muted);font-size:15px}

.about-list{display:flex;flex-direction:column;gap:14px}
.about-list li{position:relative;padding:16px 18px 16px 22px;background:var(--soft);border:1px solid var(--line);border-radius:10px;color:var(--muted);font-size:15px}
.about-list li b{display:block;color:var(--primary);font-size:16px;margin-bottom:4px}
.about-list li::before{content:"";position:absolute;left:8px;top:22px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}

/* ===== Support (Technical articles) & Cases (Project showcase) pages ===== */
.support-section,.cases-section{padding:64px 0 96px;background:var(--bg)}
.support-grid,.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}

/* shared card base */
.support-card,.case-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 24px;display:flex;flex-direction:column;gap:10px;transition:.25s;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.support-card:hover,.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--cyan)}
.support-card::before,.case-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--primary),var(--cyan));opacity:0;transition:.25s}
.support-card:hover::before,.case-card:hover::before{opacity:1}

/* support card */
.support-card__date{font-size:12px;font-weight:700;color:var(--cyan);letter-spacing:1.2px;text-transform:uppercase}
.support-card__title{font-size:18px;font-weight:700;color:var(--ink);line-height:1.35;margin:2px 0 4px}
.support-card__zh{font-size:13.5px;color:var(--muted);font-style:italic;margin-bottom:4px}
.support-card__excerpt{font-size:14px;color:var(--text);line-height:1.65;flex:1;margin:0}
.support-card__more{margin-top:10px;font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.3px}
.support-card:hover .support-card__more{color:var(--cyan)}

/* case card */
.case-card__head{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);font-weight:600;letter-spacing:.5px;padding-bottom:8px;border-bottom:1px dashed var(--line);margin-bottom:4px}
.case-card__loc{color:var(--cyan);font-weight:700}
.case-card__date{opacity:.85}
.case-card__title{font-size:17.5px;font-weight:700;color:var(--ink);line-height:1.35;margin:4px 0 4px}
.case-card__zh{font-size:13.5px;color:var(--muted);font-style:italic;margin-bottom:6px}
.case-card__desc{font-size:14px;color:var(--text);line-height:1.65;flex:1;margin:0}
.case-card__more{margin-top:10px;font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.3px}
.case-card:hover .case-card__more{color:var(--cyan)}

/* case card image */
.case-card__img{margin:-26px -24px 10px;height:200px;overflow:hidden}
.case-card__img img{width:100%;height:100%;object-fit:cover;display:block;transition:.5s}
.case-card:hover .case-card__img img{transform:scale(1.05)}

/* modal image */
.dm-image-wrap{display:block;width:100%;flex-basis:100%;margin-bottom:10px}
.dm-image{max-width:100%;max-height:300px;border-radius:8px;object-fit:cover;width:100%}

/* empty state */
.muted{color:var(--muted);font-size:14px}

/* responsive */
@media (max-width:960px){
  .support-grid,.cases-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .support-grid,.cases-grid{grid-template-columns:1fr}
  .support-section,.cases-section{padding:48px 0 70px}
}

/* mobile: stack sidebar above content */
@media (max-width:860px){
  .about-layout{grid-template-columns:1fr;gap:24px}
  .about-side{position:static;top:auto;padding:16px 14px}
  .about-side__list{flex-direction:row;flex-wrap:wrap;gap:8px}
  .about-side__item{flex:1 1 auto;text-align:center;padding:10px 12px;font-size:14px}
  .about-side__item.is-active::before{display:none}
  .about-content{min-height:0}
}
.cert-group{padding:54px 0;border-top:1px solid var(--line)}
.cert-group:first-of-type{border-top:0}
.cert-group__head{max-width:780px;margin:0 0 30px}
.cert-group__head .kicker{display:inline-block;color:var(--cyan);font-weight:700;font-size:12.5px;letter-spacing:2.5px;text-transform:uppercase;margin-bottom:10px}
.cert-group__head h3{font-size:clamp(22px,2.6vw,30px);font-weight:800;margin:0 0 10px}
.cert-group__head p{color:var(--muted);font-size:15px;margin:0}
.cert-card__cap .cert-detail{font-size:12.5px;color:#5a6c82;margin:6px 0 0;line-height:1.5}
.cert-card__cap .cert-no{font-size:11px;color:#8499ad;font-style:italic;margin:2px 0 0}
.cert-foot{text-align:center;padding:40px 0 70px;color:var(--muted);font-size:14px}
.cert-foot .btn{margin-top:14px}

/* ---------- lightbox ---------- */
.lightbox{position:fixed;inset:0;background:rgba(6,18,40,.88);backdrop-filter:blur(4px);z-index:9999;display:none;align-items:center;justify-content:center;padding:24px;animation:fadeIn .2s ease}
.lightbox.open{display:flex}
.lightbox__inner{max-width:min(900px,92vw);max-height:92vh;background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.4);display:flex;flex-direction:column;animation:zoomIn .25s ease}
.lightbox__img{background:#f3f6fa;padding:20px;display:flex;align-items:center;justify-content:center;min-height:200px}
.lightbox__img img{max-width:100%;max-height:72vh;object-fit:contain}
.lightbox__cap{padding:16px 22px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px}
.lightbox__cap h5{margin:0;font-size:15px;color:var(--primary);font-weight:700}
.lightbox__cap span{font-size:12.5px;color:#5a6c82}
.lightbox__close{position:absolute;top:18px;right:22px;width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);color:#fff;font-size:22px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s}
.lightbox__close:hover{background:var(--accent-2);border-color:var(--accent-2);color:#fff}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes zoomIn{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}

/* ---------- compressor brands ---------- */
.brands{background:#fff;padding:64px 0 72px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.brands .section__head{margin-bottom:42px}
.brands-marquee{position:relative;width:100%}
.brands-track{display:grid;grid-template-columns:repeat(5,auto);justify-content:center;align-items:center;gap:56px;max-width:1280px;margin:0 auto;padding:0 24px}
.brand{flex:0 0 auto;height:56px;display:flex;align-items:center;justify-content:center;transition:transform .35s ease}
.brand:hover{transform:scale(1.05)}
.brand img{height:100%;width:auto;display:block;object-fit:contain;user-select:none;pointer-events:none}
@media (max-width:760px){
  .brands{padding:48px 0 54px}
  .brands-track{display:flex;justify-content:center;flex-wrap:wrap;gap:32px}
  .brand{height:46px}
}

/* ---------- cta band ---------- */
.cta{background:linear-gradient(120deg,var(--primary) 0%,var(--primary-2) 60%,#06182f 100%);color:#fff;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(rgba(10,168,194,.4),transparent 70%)}
.cta__inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding:72px 0}
.cta__txt h2{font-size:clamp(26px,3vw,38px);font-weight:800;margin-bottom:14px;color:#fff;text-shadow:0 2px 18px rgba(0,0,0,.22)}
.cta__txt p{color:#cfe0f2;font-size:16px;max-width:520px}
.cta__card{background:#fff;color:var(--text);border-radius:14px;padding:30px;box-shadow:var(--shadow)}
.cta__card h3{font-size:19px;color:var(--primary);margin-bottom:18px;font-weight:800}
.cta__card label{display:flex;flex-direction:column;font-size:13px;font-weight:600;color:#34465c;text-transform:none;letter-spacing:0;margin-bottom:12px;gap:5px}
.cta__card form .row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.cta__card form .row2 label{margin-bottom:12px}
.cta__card input,.cta__card select,.cta__card textarea{display:block;width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:7px;font-size:14.5px;font-family:inherit;color:var(--text);background:#fbfdff;box-sizing:border-box}
.cta__card input:focus,.cta__card select:focus,.cta__card textarea:focus{outline:0;border-color:var(--cyan);background:#fff}
.cta__card .btn{width:100%;justify-content:center;margin-top:6px}

/* ---------- footer ---------- */
.footer{background:#08182f;color:#aebfd6;padding:64px 0 0}
/* 品牌列已按用户要求删除；剩余三列整体居中摆放（max-width + auto 左右留白） */
.footer__inner{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:48px;max-width:1120px;margin:0 auto}
/* 窄屏两列区间（561~920px）时，落单的第三列（Contact）在整行居中，避免孤零零贴左；
   560px 以下变单列，三列统一左对齐，不套用此规则 */
@media (min-width:561px) and (max-width:920px){
  .footer__inner{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
  .footer__inner .footer__col:last-child{grid-column:1/-1;justify-self:center;max-width:340px}
}
.footer__col .brand{margin-bottom:18px}
.footer__col h4{color:#fff;font-size:14px;font-weight:700;letter-spacing:1px;text-transform:uppercase;margin:6px 0 18px}
.footer__col a,.footer__col p{display:flex;align-items:center;gap:8px;color:#9fb1c9;font-size:13.5px;padding:5px 0}
.footer__col a:hover{color:var(--accent-2)}
.footer__col .about{font-size:13.5px;color:#9fb1c9;line-height:1.7;max-width:340px}
.footer__col .contact b{color:#fff;font-size:15px}
.footer__social{display:flex;gap:10px;margin-top:16px}
.footer__social a{width:36px;height:36px;border-radius:8px;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px}
.footer__social a:hover{background:var(--cyan);color:#fff}
.footer__bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:44px;padding:18px 0;font-size:12.5px;color:#6f819b;text-align:center}
.footer__bottom a{color:#9fb1c9}
.footer__bottom a:hover{color:#fff}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}
.reveal.d2{transition-delay:.16s}
.reveal.d3{transition-delay:.24s}
.reveal.d4{transition-delay:.32s}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .cat-grid{grid-template-columns:repeat(3,1fr)}
  .why{grid-template-columns:repeat(2,1fr)}
  .sol-grid{grid-template-columns:repeat(4,1fr)}
  .certs-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:920px){
  .header__nav,.header__cta{display:none}
  .header__menu{display:block}
  .header__nav.open{display:block;position:absolute;top:100%;left:0;right:0;background:#fff;box-shadow:var(--shadow);padding:10px;border-top:1px solid var(--line)}
  .header__nav.open>ul{flex-direction:column}
  .header__nav.open li{position:static}
  .header__nav.open .dropdown{position:static;box-shadow:none;border:0;padding:0 0 0 16px;min-width:0}
  .hero{min-height:auto}
  .hero__inner{padding:70px 24px}
  .stats__inner{grid-template-columns:repeat(2,1fr);gap:10px}
  .stat{border-right:0}
  .feature{grid-template-columns:1fr}
  .feature__media{min-height:260px}
  .feature--rev .feature__media{order:0}
  .factory__inner{grid-template-columns:1fr;gap:30px}
  .cta__inner{grid-template-columns:1fr;gap:26px}
  .footer__inner{grid-template-columns:repeat(2,1fr)}
  .product-track .cat{flex:0 0 264px}
}
@media (max-width:560px){
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .why{grid-template-columns:1fr}
  .sol-grid{grid-template-columns:repeat(2,1fr)}
  .certs-grid{grid-template-columns:1fr}
  .cert-card__img{height:200px}
  .footer__inner{grid-template-columns:1fr}
  .product-track .cat{flex:0 0 82%}
  .section{padding:64px 0}
  .hero h1{font-size:32px}
  .feature__body{padding:30px 24px}
}

/* ---------- certificate index / viewer ---------- */
.cert-layout{display:grid;grid-template-columns:340px 1fr;gap:32px;align-items:start}
.cert-index{position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--shadow-sm);max-height:calc(100vh - 120px);overflow:auto}
.cert-index__head{font-size:12px;font-weight:700;color:var(--cyan);letter-spacing:.14em;text-transform:uppercase;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
.cert-index__head b{color:var(--navy)}
.cert-index__group + .cert-index__group{margin-top:18px;padding-top:14px;border-top:1px dashed var(--line)}
.cert-index__gtitle{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--navy);margin-bottom:8px}
.cert-index__gtitle .num{width:22px;height:22px;border-radius:50%;background:var(--navy);color:#fff;font-size:11px;display:inline-flex;align-items:center;justify-content:center}
.cert-index__list{list-style:none;padding:0;margin:0}
.cert-index__item{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;cursor:pointer;transition:.2s;border:1px solid transparent;font-size:13.5px;color:#2a3a52}
.cert-index__item:hover{background:var(--bg);color:var(--navy)}
.cert-index__item.active{background:linear-gradient(135deg,#eef6fb,#e6f4f8);border-color:var(--cyan);color:var(--navy);font-weight:600}
.cert-index__item .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);flex-shrink:0}
.cert-index__count{margin-left:auto;font-size:11px;color:#8492a6;font-weight:600}

.cert-viewer{min-height:520px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:36px;box-shadow:var(--shadow-sm);position:relative}
.cert-viewer__placeholder{text-align:center;color:#6b7a90;padding:80px 20px}
.cert-viewer__placeholder svg{width:84px;height:84px;color:#c8d2e0;margin-bottom:18px}
.cert-viewer__placeholder h3{font-size:20px;color:var(--navy);margin-bottom:8px}
.cert-viewer__placeholder p{font-size:14px;line-height:1.7}

.cert-detail{display:none;animation:fadeIn .35s ease}
.cert-detail.show{display:block}
.cert-detail__top{margin-bottom:22px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.cert-detail__top h2{font-size:26px;color:var(--navy);margin-bottom:6px;line-height:1.25}
.cert-detail__no{display:inline-block;font-size:12px;font-weight:700;color:var(--cyan);background:#e6f4f8;padding:5px 12px;border-radius:20px;letter-spacing:.06em;margin-bottom:10px}
.cert-detail__meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-bottom:22px;padding:18px;background:var(--bg);border-radius:10px}
.cert-detail__meta dl{margin:0}
.cert-detail__meta dt{font-size:11px;font-weight:700;color:var(--cyan);letter-spacing:.1em;text-transform:uppercase;margin-bottom:4px}
.cert-detail__meta dd{font-size:14px;color:#2a3a52;font-weight:500;margin:0}
.cert-detail__img{cursor:zoom-in;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:var(--bg);padding:18px;text-align:center}
.cert-detail__img img{max-width:100%;height:auto;max-height:520px;object-fit:contain;display:inline-block}
.cert-detail__desc{font-size:14.5px;line-height:1.8;color:#3a4a62;margin-top:18px;padding:16px 18px;border-left:3px solid var(--cyan);background:#f6fafc;border-radius:0 8px 8px 0}
.cert-detail__nav{display:flex;justify-content:space-between;gap:10px;margin-top:24px;padding-top:18px;border-top:1px solid var(--line)}

@media (max-width:1080px){
  .cert-layout{grid-template-columns:280px 1fr;gap:22px}
  .cert-index{top:88px}
}
@media (max-width:860px){
  .cert-layout{grid-template-columns:1fr}
  .cert-index{position:static;max-height:none}
  .cert-viewer{padding:24px}
  .cert-detail__top h2{font-size:21px}
}

@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

/* ===== responsive for hero band + product gallery ===== */
@media (max-width:1080px){
  .hero__band{padding:38px 0 34px}
}
@media (max-width:920px){
  .header__nav,.header__cta{display:none}
  .header__menu{display:block}
  .header__nav.open{display:block;position:absolute;top:100%;left:0;right:0;background:#fff;box-shadow:var(--shadow);padding:10px;border-top:1px solid var(--line)}
  .header__nav.open>ul{flex-direction:column}
  .header__nav.open li{position:static}
  .header__nav.open .dropdown{position:static;box-shadow:none;border:0;padding:0 0 0 16px;min-width:0}
  .hero__band{padding:32px 0 28px}
  .hero__band-inner h1{font-size:34px}
  .hero__band-inner .hero__intro{font-size:17.5px;line-height:1.75}
  .stats__inner{grid-template-columns:repeat(2,1fr);gap:10px}
  .stat{border-right:0}
  .feature{grid-template-columns:1fr}
  .feature__media{min-height:260px}
  .feature--rev .feature__media{order:0}
  .factory__inner{grid-template-columns:1fr;gap:30px}
  .cta__inner{grid-template-columns:1fr;gap:26px}
  .footer__inner{grid-template-columns:repeat(2,1fr)}
  .product-track .cat{flex:0 0 264px}
}
@media (max-width:860px){
  .pcarousel__nav{width:42px;height:42px;font-size:24px}
  .hero__gallery .pcarousel__nav--prev{left:10px}
  .hero__gallery .pcarousel__nav--next{right:10px}
  .hero__gallery-meta{gap:12px}
}
@media (max-width:620px){
  .hero__band{padding:28px 0 24px}
  .hero__band-inner h1{font-size:28px;line-height:1.22}
  .hero__band-inner .hero__lead{font-size:15px}
  .hero__band-inner .hero__intro{font-size:16.5px;line-height:1.72;margin-bottom:14px}
  .hero__band-inner .hero__cta{flex-direction:column;align-items:stretch}
  .hero__band-inner .hero__cta .btn{justify-content:center}
  .hero__gallery{padding:24px 16px 30px}
  .hero__gallery-stage{border-radius:10px}
  .pcarousel__thumbs{gap:5px;padding:4px}
  .pcarousel__thumb{width:48px;height:34px}
  .pcarousel__caption{font-size:16.5px;line-height:1.35;padding-left:10px}
  .pcarousel__nav{width:36px;height:36px;font-size:20px}
  .hero__gallery .pcarousel__nav--prev{left:8px}
  .hero__gallery .pcarousel__nav--next{right:8px}
  .pcarousel__counter{font-size:11px;padding:4px 10px}
  .hero__gallery-meta{flex-direction:column;align-items:flex-start}
  .pcarousel__thumbs{flex-wrap:wrap;justify-content:flex-start}
}
@media (max-width:560px){
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .why{grid-template-columns:1fr}
  .sol-grid{grid-template-columns:repeat(2,1fr)}
  .certs-grid{grid-template-columns:1fr}
  .cert-card__img{height:200px}
  .footer__inner{grid-template-columns:1fr}
  .product-track .cat{flex:0 0 82%}
  .section{padding:64px 0}
  .hero h1{font-size:32px}
  .feature__body{padding:30px 24px}
  .pcarousel__thumb{width:42px;height:30px}
}

/* ===================== storefront (Products catalog + inquiries) ===================== */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:36px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;transition:.28s;box-shadow:0 8px 24px rgba(10,37,71,.06)}
.prod-card:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(10,37,71,.14);border-color:rgba(10,168,194,.4)}
.prod-card__img{aspect-ratio:16/12;background:#f4f7fb;overflow:hidden;cursor:pointer;position:relative}
.prod-card__img img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;display:block;opacity:0;transition:opacity .35s;padding:16px;background:#fff}
.prod-card__img img.is-active{opacity:1}
/* safety net: a lone image (no gallery) is always visible even if JS omits the class */
.prod-card__img img:only-of-type{opacity:1}
.prod-card:hover .prod-card__img img.is-active{transform:scale(1.03)}

/* card image gallery with prev/next + dots */
.prod-card__img--gallery{padding:0;background:#fff}
.prod-card__img--gallery img{padding:14px 36px;transition:opacity .35s,transform .45s}
.prod-card__nav{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:30px;height:30px;border:none;border-radius:50%;background:rgba(255,255,255,.92);color:#1f487c;font-size:18px;line-height:1;cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.12);transition:.2s;display:grid;place-items:center;padding-bottom:2px}
.prod-card__nav:hover{background:#1f487c;color:#fff}
.prod-card__nav--prev{left:8px}
.prod-card__nav--next{right:8px}
.prod-card__dots{position:absolute;bottom:10px;left:50%;transform:translateX(-50%);display:flex;gap:6px;z-index:5}
.prod-card__dot{width:7px;height:7px;border-radius:50%;background:rgba(31,72,124,.25);cursor:pointer;transition:.2s}
.prod-card__dot.is-active{background:#1f487c}

.prod-card__body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.prod-card__cat{font-size:11.5px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;color:var(--accent,#f6a623)}
.prod-card__name{font-size:17px;font-weight:700;color:#0a2547;margin:0 0 4px;line-height:1.3;cursor:pointer}
.prod-card__model{font-size:13px;color:#9ca3af;margin-bottom:10px}
.prod-card__desc{font-size:13px;color:#4b5563;line-height:1.55;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.prod-card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px}
.prod-card__foot .btn--block{width:100%;justify-content:center}
.prod-card__price{font-size:15px;font-weight:800;color:#0a2547}
.prod-card__price.is-quote{font-size:13.5px;font-weight:700;color:var(--accent,#f6a623);background:rgba(246,166,35,.12);padding:4px 10px;border-radius:20px}
.prod-card__view{font-size:13.5px;font-weight:700;color:var(--accent,#f6a623)}

/* catalog page (title moved into a navy .page-hero band above) */
.shop{padding:54px 0 90px}
.shop__head{text-align:center;max-width:760px;margin:0 auto 24px}
.shop__head .kicker{display:inline-block;color:var(--accent,#f6a623);font-weight:700;letter-spacing:1.5px;font-size:12.5px;text-transform:uppercase}
.shop__head h1{font-size:clamp(28px,4vw,42px);color:#0a2547;margin:10px 0 8px}
.shop__head p{color:#5b6c81;font-size:15.5px}
.shop__filters{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:34px}
.filter-pill{border:1px solid var(--line);background:#fff;color:#34465c;padding:8px 16px;border-radius:30px;font-size:13.5px;font-weight:600;cursor:pointer;transition:.22s}
.filter-pill:hover{border-color:var(--accent,#f6a623);color:var(--accent,#f6a623)}
.filter-pill.is-active{background:var(--primary,#12396b);border-color:var(--primary,#12396b);color:#fff}
.shop__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.shop__empty{grid-column:1/-1;text-align:center;color:#6b7d93;padding:40px}
.loading{grid-column:1/-1;text-align:center;color:#6b7d93;padding:40px;font-size:15px}
.loading::after{content:"";display:inline-block;width:14px;height:14px;margin-left:8px;border:2px solid #c3d3e6;border-top-color:var(--primary,#12396b);border-radius:50%;vertical-align:-2px;animation:lcspin .7s linear infinite}
@keyframes lcspin{to{transform:rotate(360deg)}}

/* modals (detail + inquiry) */
.lc-modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:20px;background:rgba(8,24,48,.55);backdrop-filter:blur(3px)}
.lc-modal.is-open{display:flex}
.lc-modal__box{background:#fff;border-radius:16px;max-width:880px;width:100%;max-height:90vh;overflow:auto;box-shadow:0 30px 80px rgba(8,24,48,.4);animation:lcmIn .25s ease}
@keyframes lcmIn{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
.lc-modal__head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--line)}
.lc-modal__head h3{font-size:20px;color:#0a2547;margin:0}
.lc-modal__x{width:34px;height:34px;border:none;border-radius:50%;background:#eef3f9;font-size:18px;cursor:pointer;color:#34465c;transition:.2s}
.lc-modal__x:hover{background:#0a2547;color:#fff}
.lc-modal__body{padding:22px}
.detail{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.detail__img{background:#fff;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:16px;min-height:320px}
.detail__img img{width:100%;max-height:420px;object-fit:contain;display:block;border-radius:8px}
.detail__cat{font-size:12px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;color:var(--accent,#f6a623)}
.detail__title{font-size:23px;color:#0a2547;margin:6px 0 4px}
.detail__model{color:#6b7d93;font-size:14px;margin-bottom:12px}
.detail__desc{color:#3a4d63;line-height:1.7;font-size:14.5px;margin-bottom:16px}
.detail__specs{list-style:none;padding:0;margin:0 0 18px;border-top:1px solid var(--line)}
.detail__specs li{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px solid var(--line);font-size:13.5px}
.detail__specs li b{color:#0a2547}
.detail__specs li span{color:#3a4d63;text-align:right}
.detail__price{font-size:20px;font-weight:800;color:#0a2547;margin-bottom:16px}
.detail__price.is-quote{color:var(--accent,#f6a623)}

/* inquiry form inside modal */
.inq-form{display:grid;gap:14px}
.inq-form label{display:block;font-size:13px;font-weight:600;color:#34465c;margin-bottom:5px}
.inq-form input,.inq-form textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:9px;font-size:14px;font-family:inherit;color:#0a2547;background:#fbfdff}
.inq-form input:focus,.inq-form textarea:focus{outline:none;border-color:var(--accent,#f6a623);box-shadow:0 0 0 3px rgba(246,166,35,.15)}
.inq-form .row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.inq-form .hint{font-size:12.5px;color:#6b7d93}
.inq-success{text-align:center;padding:30px 10px}
.inq-success .ic{width:60px;height:60px;border-radius:50%;background:rgba(10,168,194,.15);color:var(--accent,#f6a623);display:flex;align-items:center;justify-content:center;font-size:30px;margin:0 auto 14px}
.inq-success h3{color:#0a2547;margin-bottom:8px}
.inq-success p{color:#6b7d93;font-size:14px}

.lc-toast{position:fixed;left:50%;bottom:30px;transform:translate(-50%,20px);background:#0a2547;color:#fff;padding:12px 20px;border-radius:10px;font-size:14px;font-weight:600;box-shadow:0 12px 30px rgba(8,24,48,.35);opacity:0;transition:.3s;z-index:300}
.lc-toast.show{transform:translate(-50%,0);opacity:1}
.lc-toast.err{background:#c0392b}

@media (max-width:1080px){.prod-grid,.shop__grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:860px){.prod-grid,.shop__grid{grid-template-columns:repeat(2,1fr)}.detail{grid-template-columns:1fr}}
@media (max-width:560px){.prod-grid,.shop__grid{grid-template-columns:1fr}.inq-form .row2,.cta__card form .row2{grid-template-columns:1fr}}

/* ===== Detail Modal (Read more / View project details) ===== */
.dm-overlay{position:fixed;inset:0;background:rgba(10,37,71,.55);backdrop-filter:blur(2px);z-index:9999;display:none;align-items:center;justify-content:center;padding:24px}
.dm-overlay.is-open{display:flex;animation:dmFadeIn .2s ease}
.dm-modal{background:#fff;border-radius:14px;max-width:760px;width:100%;max-height:88vh;display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.3);animation:dmSlideUp .25s ease;overflow:hidden}
.dm-head{padding:22px 28px 14px;border-bottom:1px solid #eef2f7;display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.dm-head h3{margin:0;font-size:22px;color:var(--ink,#0b1f3a);line-height:1.35;flex:1}
.dm-head .dm-close{background:none;border:none;font-size:24px;color:#888;cursor:pointer;padding:4px 10px;line-height:1;border-radius:6px;transition:all .15s}
.dm-head .dm-close:hover{color:var(--ink,#0b1f3a);background:#f0f3f7}
.dm-meta{padding:12px 28px 0;color:var(--muted,#6b7a8f);font-size:14px;display:flex;gap:18px;flex-wrap:wrap}
.dm-meta span{display:inline-flex;align-items:center;gap:4px}
.dm-body{padding:20px 28px 28px;overflow-y:auto;flex:1;white-space:pre-wrap;line-height:1.75;color:#2d3a4f;font-size:15px}
.dm-body.is-empty{color:var(--muted,#6b7a8f);font-style:italic;white-space:normal}
.support-card,.case-card{cursor:pointer;transition:transform .15s ease,box-shadow .15s ease}
.support-card:hover,.case-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(10,37,71,.12)}
.support-card__more,.case-card__more{pointer-events:none}
@keyframes dmFadeIn{from{opacity:0}to{opacity:1}}
@keyframes dmSlideUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
@media(max-width:640px){.dm-overlay{padding:12px}.dm-head{padding:18px 18px 10px}.dm-head h3{font-size:18px}.dm-meta{padding:8px 18px 0;font-size:13px}.dm-body{padding:14px 18px 20px;font-size:14px}}
/* keep anchor targets (category cards + section ids) clear of the sticky header */
.cat,[id^="cat-"],section[id]{scroll-margin-top:92px}
/* ===== Admin-managed content blocks (Route B) ===== */
.cb-block{padding:60px 0;background:#fff}
.cb-block--append{background:#f4f8fc;border-top:1px solid #e6eef6;border-bottom:1px solid #e6eef6}
.cb-block .container{max-width:1160px;margin:0 auto;padding:0 24px}

/* ===== Condensing Units (机组) product cards ===== */
/* Drop the faint card shadow the user flagged on the 10 condensing-unit cards.
   The 1px border (from .prod-card) stays, so cards keep their edge without the shadow.
   Images stay fully visible (object-fit:contain) and a little larger (less padding). */
.prod-card--condensing{box-shadow:none;}
.prod-card--condensing:hover{box-shadow:none;}
.prod-card--condensing .prod-card__img{background:#fff;}
.prod-card--condensing .prod-card__img img{padding:10px;}
.prod-card--condensing .prod-card__img--gallery img{padding:10px 30px;}

/* ===== Refrigeration Accessories (配件) product cards ===== */
/* Clean, shadow-less cards with pure-white image area so small parts photos
   look like they sit on white paper rather than in a gray box. */
.prod-card--parts{box-shadow:none;border-color:#eef2f7;}
.prod-card--parts:hover{box-shadow:none;transform:translateY(-3px);border-color:rgba(10,168,194,.35);}
.prod-card--parts .prod-card__img{background:#fff;}
.prod-card--parts .prod-card__img img{padding:8px;background:#fff;}
.prod-card--parts .prod-card__img--gallery img{padding:8px 32px;}
.prod-card--parts .prod-card__nav{background:rgba(255,255,255,.98);box-shadow:0 1px 5px rgba(0,0,0,.08);}

/* ===== certificate strip upgrade (ported from D 副本, 2026-09-11) ===== */
.sol.cert-tile{padding:12px 12px 16px;display:flex;flex-direction:column;align-items:stretch;text-align:center}
.cert-tile__img{flex:0 0 auto;height:220px;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;align-items:center;justify-content:center;margin-bottom:12px;cursor:zoom-in}
.cert-tile__img img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;transition:transform .3s ease}
.sol.cert-tile:hover .cert-tile__img img{transform:scale(1.04)}
.sol.cert-tile h4{margin-top:auto;font-size:14px;line-height:1.35}
.sol.cert-tile p{font-size:11.5px;line-height:1.45}
@media (max-width:1100px){#certCards[data-cols="5"]{grid-template-columns:repeat(3,minmax(0,1fr))!important}}
@media (max-width:720px){#certCards[data-cols="5"]{grid-template-columns:repeat(2,minmax(0,1fr))!important}}
.lc-lightbox{position:fixed;inset:0;z-index:9999;background:rgba(8,20,35,.86);display:none;align-items:center;justify-content:center;padding:32px}
.lc-lightbox.is-open{display:flex}
.lc-lightbox img{max-width:92vw;max-height:88vh;background:#fff;border-radius:6px;box-shadow:0 24px 70px rgba(0,0,0,.5)}
.lc-lightbox__x{position:absolute;top:18px;right:26px;width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.14);color:#fff;font-size:22px;cursor:pointer;line-height:1}
.lc-lightbox__x:hover{background:rgba(255,255,255,.26)}
.lc-lightbox__cap{position:absolute;bottom:22px;left:0;right:0;text-align:center;color:#dbe6f2;font-size:14px}

/* =========================================================
   Technology Center (support.html) — documents + support
   ========================================================= */
.tc-hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.tc-hero-stats{display:flex;gap:46px;flex-wrap:wrap;margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.18)}
.tc-hero-stats>div{display:flex;flex-direction:column}
.tc-hero-stats strong{font-size:26px;font-weight:800;color:#fff;line-height:1.1}
.tc-hero-stats span{font-size:12.5px;color:#a9c4de;letter-spacing:.4px;text-transform:uppercase}
.tc-sec-head{max-width:840px;margin:0 auto 34px;text-align:center}
.tc-eyebrow{display:inline-block;color:var(--cyan);font-weight:700;letter-spacing:3px;font-size:12.5px;text-transform:uppercase;margin-bottom:10px}
.tc-sec-title{font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.4px;margin-bottom:12px}
.tc-sec-sub{color:var(--muted);font-size:15px;line-height:1.75}
.tc-block-title{font-size:19px;font-weight:800;margin:54px 0 18px;padding-left:14px;border-left:4px solid var(--cyan)}
.tc-filters{display:flex;flex-wrap:wrap;gap:9px;justify-content:center;margin-bottom:30px}
.tc-chip{border:1px solid var(--line);background:#fff;color:var(--primary);font:inherit;font-size:13px;font-weight:600;padding:8px 15px;border-radius:999px;cursor:pointer;transition:.2s}
.tc-chip:hover{border-color:var(--cyan);color:var(--cyan)}
.tc-chip.is-on{background:var(--primary);border-color:var(--primary);color:#fff}
.support-card__top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.support-card__tag{font-size:10.5px;font-weight:700;letter-spacing:.7px;text-transform:uppercase;color:var(--primary);background:#eaf6fa;border:1px solid #d3ecf4;padding:3px 9px;border-radius:999px;white-space:nowrap}
.support-card__actions{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px}
.support-card__dl{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:700;color:var(--primary);background:var(--soft);border:1px solid var(--line);padding:7px 11px;border-radius:8px;transition:.2s;white-space:nowrap}
.support-card__dl:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.dm-dl{display:inline-flex;align-items:center;gap:6px;background:var(--soft);border:1px solid var(--line);color:var(--primary);font-weight:700;font-size:13px;padding:9px 14px;border-radius:9px;margin-bottom:14px;flex-basis:100%;transition:.2s}
.dm-dl:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

.tc-support{padding:72px 0 96px;background:linear-gradient(180deg,#f4f8fc 0%,#fff 55%)}
.tc-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tc-step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 22px;box-shadow:var(--shadow-sm);transition:.25s}
.tc-step:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--cyan)}
.tc-step__no{width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center;margin-bottom:13px}
.tc-step h4{font-size:16px;margin-bottom:7px}
.tc-step p{font-size:13.5px;line-height:1.68;color:var(--text)}
.tc-step__sla{margin-top:12px;font-size:12.5px;font-weight:700;color:var(--cyan);padding-top:10px;border-top:1px dashed var(--line)}
.tc-contact{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tc-contact__card{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow-sm);transition:.25s}
.tc-contact__card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--cyan)}
.tc-contact__ic{width:44px;height:44px;border-radius:12px;background:#eaf6fa;display:flex;align-items:center;justify-content:center;font-size:20px;flex:none}
.tc-contact__card b{display:block;font-size:15px;color:var(--ink);margin-bottom:3px}
.tc-contact__card span{font-size:13px;color:var(--muted);line-height:1.6;word-break:break-word}
.tc-sla{margin-top:22px;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow-sm)}
.tc-sla table{width:100%;border-collapse:collapse;font-size:13.5px}
.tc-sla th{background:var(--primary-2);color:#fff;text-align:left;font-weight:700;padding:13px 20px;font-size:12.5px;letter-spacing:.5px;text-transform:uppercase}
.tc-sla td{padding:13px 20px;border-top:1px solid var(--line);color:var(--text)}
.tc-sla tbody tr:nth-child(even){background:#fafcfe}
.tc-faq{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm)}
.tc-faq details{border-bottom:1px solid var(--line)}
.tc-faq details:last-child{border-bottom:0}
.tc-faq summary{cursor:pointer;list-style:none;padding:18px 22px;font-weight:700;font-size:15px;color:var(--ink);display:flex;align-items:center;justify-content:space-between;gap:16px;transition:.2s}
.tc-faq summary::-webkit-details-marker{display:none}
.tc-faq summary:hover{background:#f7fbfe;color:var(--cyan)}
.tc-faq summary::after{content:"+";color:var(--cyan);font-size:22px;font-weight:700;line-height:1}
.tc-faq details[open] summary{background:#f7fbfe}
.tc-faq details[open] summary::after{content:"–"}
.tc-faq__a{padding:0 22px 20px;font-size:14px;line-height:1.78;color:var(--text);max-width:1000px}
.tc-faq__a b{color:var(--primary)}
.tc-formwrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:28px;align-items:start}
.tc-formwrap__txt h3{font-size:20px;margin-bottom:8px}
.tc-tips{margin:12px 0 0;display:grid;gap:9px}
.tc-tips li{position:relative;padding-left:22px;font-size:14px;color:var(--text);line-height:1.65}
.tc-tips li::before{content:"✓";position:absolute;left:0;top:0;color:var(--cyan);font-weight:800}
.tc-formwrap__note{margin-top:18px;font-size:13.5px;color:var(--muted);background:var(--soft);border-left:3px solid var(--cyan);padding:14px 16px;border-radius:0 8px 8px 0;line-height:1.7}
.tc-form{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:var(--shadow-sm)}
.tc-form h3{font-size:19px;margin-bottom:5px}
.tc-form .hint{font-size:13px;color:var(--muted);margin-bottom:18px}
.tc-form label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:13px}
.tc-form input,.tc-form select,.tc-form textarea{width:100%;margin-top:6px;padding:11px 13px;border:1px solid var(--line);border-radius:9px;font-size:14px;font-family:inherit;color:var(--text);background:#fbfdff;transition:.2s;box-sizing:border-box}
.tc-form textarea{resize:vertical;line-height:1.6}
.tc-form input:focus,.tc-form select:focus,.tc-form textarea:focus{outline:none;border-color:var(--cyan);background:#fff;box-shadow:0 0 0 3px rgba(10,168,194,.12)}
.tc-form .row2{display:grid;grid-template-columns:1fr 1fr;gap:13px}
.tc-form button{width:100%;justify-content:center;margin-top:8px}
.tc-form button[disabled]{opacity:.6;cursor:default}
@media(max-width:1024px){
  .tc-steps{grid-template-columns:repeat(2,1fr)}
  .tc-contact{grid-template-columns:1fr}
  .tc-formwrap{grid-template-columns:1fr}
}
@media(max-width:640px){
  .tc-steps{grid-template-columns:1fr}
  .tc-hero-stats{gap:26px}
  .tc-form .row2{grid-template-columns:1fr}
  .tc-sla{overflow-x:auto}
  .tc-sla table{min-width:520px}
}

/* =========================================================
   Video Showcase — 首页板块 + videos.html + 全屏播放器
   ========================================================= */
.vid-tabs{display:flex;flex-wrap:wrap;gap:9px;justify-content:center;margin-bottom:30px}
.vid-chip{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:#fff;color:var(--primary);font:inherit;font-size:13.5px;font-weight:700;padding:9px 16px;border-radius:999px;cursor:pointer;transition:.2s}
.vid-chip:hover{border-color:var(--cyan);color:var(--cyan)}
.vid-chip i{font-style:normal;font-size:11.5px;font-weight:800;background:var(--soft-2);color:var(--muted);border-radius:999px;padding:1px 7px}
.vid-chip.is-on{background:var(--primary);border-color:var(--primary);color:#fff}
.vid-chip.is-on i{background:rgba(255,255,255,.22);color:#fff}
.vid-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.vid-empty{grid-column:1/-1;text-align:center;color:var(--muted);padding:50px 0;font-size:15px}
.vid-actions{text-align:center;margin-top:38px}

.vcard{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;cursor:pointer;display:flex;flex-direction:column;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s}
.vcard:hover,.vcard:focus-visible{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--cyan);outline:none}
.vcard__thumb{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#0a2547,#12396b);overflow:hidden}
.vcard__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.vcard:hover .vcard__thumb img{transform:scale(1.06)}
.vcard__noimg{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.22);font-size:30px;font-weight:800;letter-spacing:3px}
.vcard__play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,rgba(6,20,40,.04),rgba(6,20,40,.42))}
.vcard__play i{width:54px;height:54px;border-radius:50%;background:rgba(255,255,255,.94);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;font-style:normal;padding-left:4px;box-shadow:0 8px 26px rgba(0,0,0,.34);transition:transform .25s,background .25s,color .25s}
.vcard:hover .vcard__play i{background:var(--accent);color:#3a2400;transform:scale(1.1)}
.vcard__badge{position:absolute;top:10px;left:10px;font-size:10.5px;font-weight:800;letter-spacing:.9px;text-transform:uppercase;padding:4px 9px;border-radius:999px;color:#fff;background:rgba(10,37,71,.82)}
.vcard__badge--short{background:rgba(10,168,194,.92)}
.vcard__dur{position:absolute;bottom:10px;right:10px;font-size:11.5px;font-weight:700;letter-spacing:.4px;color:#fff;background:rgba(0,0,0,.62);padding:3px 8px;border-radius:6px}
.vcard__pending{position:absolute;bottom:10px;left:10px;font-size:10.5px;font-weight:800;letter-spacing:.7px;text-transform:uppercase;color:#3a2400;background:var(--accent);padding:3px 8px;border-radius:6px}
.vcard__body{padding:16px 17px 18px;display:flex;flex-direction:column;gap:7px;flex:1}
.vcard__body h3{font-size:15px;line-height:1.42;margin:0}
.vcard__body p{font-size:13px;color:var(--muted);line-height:1.6;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.vp-overlay{position:fixed;inset:0;z-index:10000;background:rgba(5,14,26,.94);display:none;flex-direction:column;padding:20px 26px 16px;overflow:hidden}
.vp-overlay.is-open{display:flex;animation:vpFade .2s ease}
@keyframes vpFade{from{opacity:0}to{opacity:1}}
.vp-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;flex:none}
.vp-head h3{color:#fff;font-size:18px;line-height:1.4;margin:0 0 6px}
.vp-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#9fb6cd;letter-spacing:.3px}
.vp-chip{display:inline-block;font-size:10.5px;font-weight:800;letter-spacing:.8px;text-transform:uppercase;color:#3a2400;background:var(--accent);padding:3px 9px;border-radius:999px}
.vp-nav{display:flex;align-items:center;gap:9px;flex:none}
.vp-btn{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:#fff;font:inherit;font-size:13px;font-weight:700;padding:9px 15px;border-radius:9px;cursor:pointer;transition:.2s}
.vp-btn:hover{background:rgba(255,255,255,.24)}
.vp-btn[disabled]{opacity:.32;cursor:default}
.vp-close{width:40px;height:40px;padding:0;border-radius:50%;font-size:17px}
.vp-stage{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;margin:14px 0}
.vp-frame{width:min(1200px,100%);height:100%;background:#000;border-radius:12px;overflow:hidden;display:flex;align-items:center;justify-content:center;box-shadow:0 24px 70px rgba(0,0,0,.5)}
.vp-frame video,.vp-frame iframe{width:100%;height:100%;border:0;display:block;background:#000}
.vp-empty{padding:44px 34px;text-align:center;color:#cfe0f2;font-size:14.5px;line-height:1.75;max-width:580px}
.vp-empty b{display:block;color:#fff;font-size:17px;margin-bottom:10px}
.vp-empty i{color:var(--accent-2);font-style:normal;font-weight:700}
.vp-foot{flex:none}
.vp-desc{color:#b9cde1;font-size:13.5px;line-height:1.7;max-width:1100px;margin:0 0 10px}
.vp-strip{display:flex;gap:10px;overflow-x:auto;padding:4px 2px 6px}
.vp-thumb{position:relative;flex:none;width:128px;padding:0;border:2px solid transparent;border-radius:9px;overflow:hidden;background:#0b1f3a;cursor:pointer;opacity:.5;transition:opacity .2s,border-color .2s}
.vp-thumb:hover{opacity:.85}
.vp-thumb.is-on{opacity:1;border-color:var(--accent)}
.vp-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
.vp-thumb__noimg{display:block;width:100%;aspect-ratio:16/9;background:linear-gradient(135deg,#0a2547,#12396b)}
.vp-thumb>span{position:absolute;bottom:0;left:0;right:0;font-size:10px;font-weight:700;color:#fff;background:rgba(0,0,0,.62);padding:2px 5px;text-align:left;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

@media(max-width:1100px){.vid-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:1024px){.vid-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){
  .vid-grid{grid-template-columns:1fr}
  .vp-overlay{padding:14px 14px 12px}
  .vp-head{flex-direction:column;gap:12px}
  .vp-head h3{font-size:15px}
  .vp-nav{width:100%}
  .vp-stage{margin:10px 0}
  .vp-desc{font-size:12.5px}
  .vp-thumb{width:104px}
}

/* ---------- 首页 Video Showcase：只给链接，点进去才看视频 ---------- */
/* minmax(0,1fr) 而非 1fr：条目里的 .vlink__sub 是 nowrap，1fr 会按 min-content
   撑宽轨道（实测 1 条时挤成 848px+158px、2 条以上直接溢出 1020 容器） */
.vid-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;max-width:1020px;margin:0 auto}
/* 条目数为奇数时，最后一条独占整行——单条视频即整行居中，不会缩在左半格 */
.vid-links > :last-child:nth-child(odd){grid-column:1/-1}
.vid-links .vid-empty{grid-column:1/-1}
.vlink{display:flex;align-items:center;gap:14px;padding:15px 18px;background:#fff;border:1px solid var(--line);border-radius:12px;text-decoration:none;transition:.22s;box-shadow:var(--shadow-sm)}
.vlink:hover,.vlink:focus-visible{border-color:var(--cyan);box-shadow:var(--shadow);transform:translateY(-2px);outline:none}
.vlink__play{flex:none;width:34px;height:34px;border-radius:50%;background:var(--soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:12px;padding-left:3px;transition:.22s}
.vlink:hover .vlink__play{background:var(--accent);color:#3a2400}
.vlink__text{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}
.vlink__title{font-size:15px;font-weight:700;color:var(--ink);line-height:1.4;transition:.2s}
.vlink:hover .vlink__title{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.vlink__sub{font-size:12.5px;color:var(--muted);line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.vlink__end{flex:none;display:flex;align-items:center;gap:9px}
.vlink__type{font-size:10px;font-weight:800;letter-spacing:.8px;text-transform:uppercase;padding:3px 8px;border-radius:999px;color:var(--primary);background:#eaf6fa;border:1px solid #d3ecf4;white-space:nowrap}
.vlink__type--short{color:#075a68;background:#e2f6fa;border-color:#c6ecf3}
.vlink__dur{font-size:12px;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums}
.vlink__pending{font-size:10.5px;font-weight:700;color:#a35b00;background:#fff8e8;border:1px solid #f0d9a8;padding:2px 7px;border-radius:999px;white-space:nowrap}
@media(max-width:900px){.vid-links{grid-template-columns:1fr}}
@media(max-width:640px){
  .vlink{padding:13px 14px;gap:10px}
  .vlink__sub,.vlink__type{display:none}
}

/* ---------- topbar / contact widget : responsive ---------- */
@media (max-width:1180px){
  .topbar{font-size:14px}
  .topbar .im-btn{font-size:13px;padding:4px 10px 4px 8px}
}
@media (max-width:1024px){
  .topbar .im-btn span{display:none}          /* 图标模式，省空间 */
  .topbar .im-btn{padding:6px;border-radius:999px}
  .topbar .im-btn svg{width:17px;height:17px}
  .topbar__im{gap:6px}
}
@media (max-width:820px){
  .topbar{font-size:13.5px;padding:8px 0}
  .topbar__inner{gap:6px}
  .topbar__meta .sep{display:none}
  .topbar__meta{gap:0 8px}
}
@media (max-width:560px){
  .topbar{font-size:13px}
  .topbar__meta .mail{display:none}
  .contact-pop{width:min(338px,calc(100vw - 28px));right:-8px;padding:16px 15px 14px}
  .cp-qr img{width:136px;height:136px}
}