/* ===========================================================
   ZGPT Power — 中高电气 三语官网
   Design tokens / layout / components
   =========================================================== */
:root{
  --primary:#0b62b0;
  --primary-2:#0e7fd6;
  --primary-dark:#072f5c;
  --navy:#0a2540;
  --accent:#d8232a;
  --ink:#12263d;
  --muted:#5b6b7c;
  --bg:#ffffff;
  --bg-alt:#f2f6fb;
  --bg-deep:#072a52;
  --line:#e3eaf2;
  --radius:12px;
  --radius-lg:18px;
  --shadow:0 6px 24px rgba(10,37,64,.08);
  --shadow-lg:0 18px 48px rgba(10,37,64,.16);
  --max:1180px;
  --font:"Segoe UI",-apple-system,BlinkMacSystemFont,"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",Roboto,"PT Sans",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  line-height:1.7;-webkit-font-smoothing:antialiased;font-size:16px;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-2)}
h1,h2,h3,h4{line-height:1.28;color:var(--navy);margin:0 0 .5em;font-weight:700}
h1{font-size:clamp(28px,4vw,46px)}
h2{font-size:clamp(22px,2.6vw,32px)}
h3{font-size:clamp(18px,2vw,22px)}
p{margin:0 0 1em}
ul{margin:0;padding-left:1.15em}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section.alt{background:var(--bg-alt)}
.section-head{max-width:820px;margin:0 auto 40px;text-align:center}
.section-head .eyebrow{color:var(--primary);font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:12px;margin-bottom:10px}
.section-head p{color:var(--muted);margin:0}
.lead{color:var(--muted);font-size:17px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--line)}
.site-header .inner{display:flex;align-items:center;gap:18px;height:74px;max-width:var(--max);margin:0 auto;padding:0 20px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand img{height:44px;width:auto}
.brand .brand-txt strong{display:block;font-size:15px;color:var(--navy);line-height:1.2}
.brand .brand-txt span{font-size:11.5px;color:var(--muted);letter-spacing:.04em}
.nav{margin-left:auto;display:flex;align-items:center;gap:2px}
.nav a{padding:10px 14px;border-radius:8px;color:var(--ink);font-weight:600;font-size:15px;white-space:nowrap}
.nav a:hover{background:var(--bg-alt);color:var(--primary)}
.nav a.active{color:var(--primary);background:rgba(11,98,176,.08)}
.lang{display:flex;gap:4px;margin-left:8px;border-left:1px solid var(--line);padding-left:14px}
.lang a{padding:6px 10px;border-radius:999px;font-size:13px;font-weight:700;color:var(--muted);border:1px solid transparent}
.lang a:hover{color:var(--primary)}
.lang a.active{background:var(--primary);color:#fff}
.burger{display:none;margin-left:auto;background:none;border:0;padding:8px;cursor:pointer}
.burger span{display:block;width:24px;height:2px;background:var(--navy);margin:5px 0;border-radius:2px;transition:.25s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero slider ---------- */
.hero-slider{position:relative;background:var(--bg-deep);overflow:hidden}
.hero-slider .slides{position:relative;height:clamp(240px,34vw,520px)}
.hero-slider .slide{position:absolute;inset:0;opacity:0;transition:opacity .8s ease;display:block}
.hero-slider .slide.active{opacity:1}
.hero-slider .slide img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-slider .s-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.55);background:rgba(6,32,60,.35);color:#fff;font-size:26px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(3px);transition:.2s}
.hero-slider .s-nav:hover{background:#fff;color:var(--navy)}
.hero-slider .prev{left:18px}
.hero-slider .next{right:18px}
.hero-slider .dots{position:absolute;left:0;right:0;bottom:16px;z-index:4;display:flex;gap:10px;justify-content:center}
.hero-slider .dot{width:11px;height:11px;border-radius:50%;border:1.5px solid rgba(255,255,255,.85);background:transparent;cursor:pointer;padding:0;transition:.2s}
.hero-slider .dot.active{background:#fff;width:30px;border-radius:999px}

/* hero 下方条带（保留 H1 与关键数据，利于 SEO/GEO） */
.hero-bar{background:linear-gradient(120deg,var(--primary-dark),var(--primary));color:#fff;padding:38px 0 34px}
.hero-bar .container{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}
.hero-bar h1{color:#fff;font-size:clamp(24px,3vw,36px);margin-bottom:6px}
.hero-bar p{color:#c9e2fb;margin:0;font-weight:600}
.hero-bar .stat-row{margin-top:0;grid-template-columns:repeat(4,1fr);gap:12px}
.hero-bar .stat{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24)}
.hero-bar .stat b{color:#fff;font-size:22px}
.hero-bar .stat span{color:#bfdcf8}

.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;border:1.5px solid transparent;transition:.2s;cursor:pointer}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#b81a21;color:#fff}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{background:#fff;color:var(--navy)}
.btn-line{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-line:hover{background:var(--primary);color:#fff}

/* ---------- Page banner（内页实景 banner） ---------- */
.page-banner{position:relative;color:#fff;padding:88px 0 78px;background-size:cover;background-position:center;background-color:var(--primary-dark);overflow:hidden}
.page-banner .veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(5,28,55,.9) 0%,rgba(7,45,88,.78) 45%,rgba(9,70,132,.5) 100%)}
.page-banner .container{position:relative;z-index:2}
.page-banner h1{color:#fff;margin-bottom:8px;text-shadow:0 2px 14px rgba(0,0,0,.25)}
.page-banner p{color:#d6e7fa;margin:0;max-width:760px}
.breadcrumb{font-size:13px;color:#a9cdf2;margin-bottom:12px}
.breadcrumb a{color:#dceafd}
.page-banner::after{content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;background:rgba(255,255,255,.06)}

/* ---------- Grids & cards ---------- */
.grid{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.g-auto{grid-template-columns:repeat(auto-fit,minmax(256px,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cfe0f2}
.card .ico{width:46px;height:46px;border-radius:11px;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:14px}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--muted);margin:0;font-size:15px}

/* series cards */
.series-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.25s}
.series-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.series-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt)}
.series-card .thumb img{width:100%;height:100%;object-fit:cover;transition:.5s}
.series-card:hover .thumb img{transform:scale(1.05)}
.series-card .body{padding:22px;display:flex;flex-direction:column;flex:1}
.series-card .tag{display:inline-block;font-size:12px;font-weight:700;color:var(--primary);background:rgba(11,98,176,.09);padding:3px 10px;border-radius:999px;margin-bottom:10px;align-self:flex-start}
.series-card h3{font-size:18px;margin-bottom:6px}
.series-card .range{color:var(--primary);font-weight:700;font-size:14px;margin-bottom:10px}
.series-card p{color:var(--muted);font-size:14.5px;margin:0 0 16px}
.series-card .more{margin-top:auto;font-weight:700;font-size:14px}

/* 首页产品系列：单排横向滑动 + 左右按钮 */
.series-strip-wrap{position:relative;margin-top:34px}
.series-strip{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none;padding:4px;align-items:stretch}
.series-strip::-webkit-scrollbar{display:none}
.series-strip .series-card{flex:0 0 calc((100% - 66px)/4);scroll-snap-align:start}
.strip-btn{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--primary);font-size:28px;line-height:1;cursor:pointer;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;transition:.25s;padding:0 0 4px}
.strip-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.strip-btn.prev{left:-12px}
.strip-btn.next{right:-12px}
.strip-btn[disabled]{opacity:.3;cursor:default;pointer-events:none}

/* ---------- Profile ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center}
.profile-text p{color:#39485a}
.stat-row{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:26px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.stat b{display:block;color:var(--primary);font-size:24px;line-height:1.1}
.stat span{color:var(--muted);font-size:13.5px}
.photo-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.photo-grid img{border-radius:var(--radius);height:100%;width:100%;object-fit:cover;aspect-ratio:4/3;box-shadow:var(--shadow)}

/* ---------- Culture ---------- */
.culture-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.culture{background:#fff;border:1px solid var(--line);border-left:4px solid var(--primary);border-radius:var(--radius);padding:22px}
.culture h4{margin:0 0 12px;color:var(--primary);font-size:15px;letter-spacing:.04em}
.culture ul{list-style:none;padding:0;margin:0}
.culture li{padding:5px 0;color:#3b4c5e;font-weight:600;font-size:15px}
.culture li::before{content:"—";color:var(--accent);margin-right:8px}

/* ---------- Checklist ---------- */
.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.checklist .item{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.checklist .item::before{content:"✓";flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px}
.checklist .item span{font-weight:600;font-size:15px}

/* ---------- Products ---------- */
.product-block{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff;box-shadow:var(--shadow);margin-bottom:34px}
.product-block .head{display:grid;grid-template-columns:1.1fr .9fr;gap:0}
.product-block .head .txt{padding:34px}
.product-block .head .imgwrap{min-height:280px;background:var(--bg-alt)}
.product-block .head .imgwrap img{width:100%;height:100%;object-fit:cover}
.product-block .model{display:inline-block;background:var(--navy);color:#fff;font-weight:700;font-size:12.5px;letter-spacing:.08em;padding:4px 12px;border-radius:6px;margin-bottom:12px}
.product-block h3{font-size:22px;margin-bottom:6px}
.product-block .range{color:var(--primary);font-weight:700;margin-bottom:14px}
.product-block .desc{color:#3d4d5f;font-size:15px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chip{background:var(--bg-alt);border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;color:#3b4c5e}
.spec-block{padding:0 34px 34px}
.spec-block h4{font-size:16px;margin:24px 0 12px;padding-left:12px;border-left:3px solid var(--accent)}

/* tables */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);-webkit-overflow-scrolling:touch}
table.spec{width:100%;border-collapse:collapse;font-size:13.5px;min-width:760px}
table.spec th,table.spec td{padding:9px 12px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
table.spec thead th{background:var(--primary);color:#fff;font-weight:700;position:sticky;top:0;font-size:13px;line-height:1.35}
table.spec tbody tr:nth-child(even){background:#f7fafd}
table.spec tbody tr:hover{background:#eaf3fc}
table.spec td:first-child{font-weight:700;color:var(--navy)}
.spec-note{color:var(--muted);font-size:13px;margin-top:10px;line-height:1.6}

/* extras */
.extras{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.extra{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.extra img{aspect-ratio:16/9;object-fit:cover;width:100%}
.extra .body{padding:22px}
.extra h3{font-size:18px;margin-bottom:10px}
.extra ul{padding-left:1.1em}
.extra li{color:var(--muted);font-size:14.5px;margin-bottom:6px}

/* ---------- Cases ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:30px}
.tab{padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink);font-weight:600;font-size:14px;cursor:pointer;transition:.2s}
.tab:hover{border-color:var(--primary);color:var(--primary)}
.tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.tab-panel{display:none;animation:fade .35s ease}
.tab-panel.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.project-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.project-list .proj{display:flex;gap:10px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:10px;padding:13px 16px;font-size:14.5px;color:#37485a}
.project-list .proj::before{content:"";flex:0 0 auto;width:7px;height:7px;margin-top:9px;border-radius:50%;background:var(--accent)}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.gallery img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow);transition:.3s}
.gallery img:hover{transform:scale(1.03);box-shadow:var(--shadow-lg)}

/* ---------- Service ---------- */
.promise-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.promise-list .p{display:flex;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;color:#37485a;font-size:14.8px}
.promise-list .p::before{content:"›";flex:0 0 auto;color:var(--primary);font-weight:800;font-size:20px;line-height:1}
.city-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.city-cloud span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-weight:600;color:#37485a;font-size:14px}
.network-visual{background:linear-gradient(120deg,var(--primary-dark),var(--primary));border-radius:var(--radius-lg);padding:34px;color:#fff;margin-top:26px}
.network-visual h3{color:#fff}
.network-visual p{color:#cfe4fb;margin:0}
/* 服务网络地图（取自公司画册） */
.network-map{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:14px;box-shadow:var(--shadow)}
.network-map img{width:100%;height:auto;border-radius:calc(var(--radius-lg) - 6px)}
.network-map figcaption{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:center;
  padding:16px 8px 4px;color:var(--muted);font-size:14.5px;line-height:1.6}
.network-map .nm-note{flex:1 1 320px}
.network-map .nm-hot{flex:0 0 auto;color:var(--accent);font-weight:800;font-size:19px;letter-spacing:.01em;white-space:nowrap}
.network-map .nm-hot b{color:var(--muted);font-weight:600;font-size:13px;margin-right:9px;letter-spacing:0}
.hotline-box{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;margin-top:20px}
.hotline-box .num{font-size:26px;font-weight:800;color:var(--accent);letter-spacing:.02em}
.hotline-box .lbl{color:var(--muted);font-size:13.5px}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow)}
.info-row{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line)}
.info-row:last-child{border-bottom:0}
.info-row .k{flex:0 0 96px;font-weight:700;color:var(--primary);font-size:14px}
.info-row .v{color:#37485a;font-size:15px}
.branch-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:22px}
.branch{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.branch b{display:block;color:var(--navy);margin-bottom:4px;font-size:15px}
.branch span{color:var(--muted);font-size:13.5px}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(120deg,var(--primary-dark),var(--primary-2));color:#fff;border-radius:var(--radius-lg);padding:44px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin-bottom:6px}
.cta-band p{color:#cfe4fb;margin:0}
.cta-band .btn-primary{background:#fff;color:var(--primary)}
.cta-band .btn-primary:hover{background:#eaf3fc;color:var(--primary)}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-deep);color:#b8cbe0;padding:56px 0 24px;margin-top:0}
.site-footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.site-footer a{color:#b8cbe0}
.site-footer a:hover{color:#fff}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{padding:4px 0;font-size:14px}
.site-footer .logo-row{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.site-footer .logo-row img{height:40px;filter:brightness(0) invert(1)}
.site-footer .bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:18px;font-size:13px;color:#8ba5c0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.site-footer .note{font-size:12.5px;color:#7d97b3;margin-top:10px;line-height:1.6}

/* ---------- Lang landing ---------- */
.lang-hub{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(135deg,#072a52,#0b62b0 60%,#0e7fd6);color:#fff;text-align:center;padding:40px 20px}
.lang-hub img{height:64px;margin-bottom:22px}
.lang-hub h1{color:#fff;margin-bottom:8px}
.lang-hub p{color:#cfe4fb;margin-bottom:34px}
.lang-cards{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}
.lang-cards a{display:block;min-width:190px;padding:24px 28px;border-radius:16px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);color:#fff;transition:.25s}
.lang-cards a:hover{background:#fff;color:var(--primary)}
.lang-cards a strong{display:block;font-size:19px;margin-bottom:4px}
.lang-cards a span{font-size:13px;opacity:.85}

/* ---------- Culture photos / 资质证书墙 ---------- */
.photo-row{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}
.photo-row figure{margin:0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);background:#fff}
.photo-row img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:.4s}
.photo-row figure:hover img{transform:scale(1.04)}
.cert-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:30px}
/* 关键修复：figcaption 用 nowrap 保留省略号效果，但其 min-content 宽度会被证书全名撑爆
   （如「四川电力交易中心有限公司注册证明」16 字 ≈192px），而 grid item 默认 min-width:auto
   不允许收缩到内容以下 → 360/390/414 手机视口下两列被撑到 220px+268px=489px，整块横向溢出。
   必须显式 min-width:0 让 grid item 可收缩，figcaption 的 ellipsis 才会真正生效。 */
.cert-wall .cert{min-width:0}
.cert-wall .cert{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:10px;box-shadow:var(--shadow);cursor:zoom-in;transition:.25s}
.cert-wall .cert:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cfe0f2}
.cert-wall img{width:100%;aspect-ratio:3/4;object-fit:contain;background:#fbfcfe;border-radius:6px}
.cert-wall figcaption{font-size:12px;color:var(--muted);text-align:center;padding:8px 2px 2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
/* 窄屏（≤1024px，3列/2列）证书名允许最多两行：
   手机端 2 列时列宽仅 ~152px，而证书名如「四川电力交易中心有限公司注册证明」/英文/俄文授权名
   普遍 12~40 字符，单行 nowrap + ellipsis 会把名字截成半句（实测中文 10/16、英文 14/16、
   俄文 16/16 被截断）。改为 line-clamp 2 行，超出才省略，信息不丢。 */
@media (max-width:1024px){
  .cert-wall figcaption{
    white-space:normal;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
    font-size:11.5px;
    line-height:1.4;
    padding:7px 2px 0;
    word-break:break-word;
  }
}
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(6,20,38,.92);display:none;align-items:center;justify-content:center;padding:26px;cursor:zoom-out}
.lightbox.open{display:flex}
.lightbox img{max-width:min(92vw,760px);max-height:88vh;border-radius:8px;box-shadow:0 24px 60px rgba(0,0,0,.5);background:#fff}
.lightbox .lb-close{position:absolute;top:18px;right:24px;color:#fff;font-size:34px;line-height:1;background:none;border:0;cursor:pointer}

/* ---------- 产品：品牌切换 + 参数折叠 ---------- */
.series-tabs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:28px}
.series-tabs .tab{padding:11px 22px;font-size:15px}
.series-panels>.panel{display:none}
.series-panels>.panel.active{display:block;animation:fade .35s ease}
.series-panels .product-block{margin-bottom:0}
.spec-details{margin-top:6px;border-top:1px dashed var(--line)}
.spec-details>summary{cursor:pointer;list-style:none;display:inline-flex;align-items:center;gap:10px;margin:22px 0;padding:12px 24px;border-radius:999px;background:var(--primary);color:#fff;font-weight:700;font-size:14.5px;transition:.2s}
.spec-details>summary:hover{background:var(--primary-2)}
.spec-details>summary::-webkit-details-marker{display:none}
.spec-details>summary::after{content:"▾";font-size:13px;transition:.25s}
.spec-details[open]>summary::after{transform:rotate(180deg)}
.spec-details .sd-close{display:none}
.spec-details[open] .sd-open{display:none}
.spec-details[open] .sd-close{display:inline}
.spec-details .spec-block{padding:0 34px 30px}

/* ---------- 联系我们：厂区/办公室照片 ---------- */
.contact-photos{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-content:start}
.contact-photos figure{margin:0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);background:#fff;position:relative}
.contact-photos img{width:100%;aspect-ratio:4/3;object-fit:cover}
.contact-photos figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 12px;color:#fff;font-size:14px;font-weight:600;background:linear-gradient(transparent,rgba(5,25,48,.85))}

/* ---------- 新闻 ---------- */
.news-list{display:grid;gap:22px}
.news-item{display:grid;grid-template-columns:320px 1fr;gap:26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:.25s}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.news-item .thumb{display:block;background:var(--bg-alt)}
.news-item .thumb img{width:100%;height:100%;min-height:200px;object-fit:cover}
.news-item .body{padding:24px 26px 24px 0}
.news-item .date,.card .date{color:var(--muted);font-size:13px;font-weight:600;letter-spacing:.04em;margin-bottom:8px}
.news-item h2{font-size:20px;margin-bottom:8px}
.news-item h2 a{color:var(--navy)}
.news-item h2 a:hover{color:var(--primary)}
.news-item p{color:var(--muted);font-size:14.8px;margin:0 0 12px}
.news-item .more{font-weight:700;font-size:14px}
.news-card{display:flex;flex-direction:column;padding:0;overflow:hidden}
.news-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-card .body{padding:0 22px 22px}
.news-card h3{font-size:17px;margin-bottom:8px}
.news-card h3 a{color:var(--navy)}
.news-card h3 a:hover{color:var(--primary)}
.narrow{max-width:880px}
.news-article{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow)}
.news-article .art-title{font-size:clamp(22px,2.6vw,30px);margin:6px 0 20px}
.news-article .art-cover{margin:0 0 24px;border-radius:var(--radius);overflow:hidden}
.news-article .art-cover img{width:100%;max-height:420px;object-fit:cover}
.news-article .art-body{color:#33465a;font-size:16px}
.news-article .art-body p{margin:0 0 1.1em}
.news-article .art-back{margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}
.related{margin-top:30px}
.related h3{font-size:17px;margin-bottom:12px}
.related ul{list-style:none;padding:0;margin:0}
.related li{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px}
.related li span{color:var(--muted);font-size:13.5px;flex:0 0 auto}
.empty{color:var(--muted);text-align:center;padding:40px 0}

/* ---------- Reveal (progressive enhancement: only when JS present) ---------- */
.js .reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .g-4{grid-template-columns:repeat(2,1fr)}
  .culture-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:30px}
  .product-block .head{grid-template-columns:1fr}
  .site-footer .cols{grid-template-columns:1fr 1fr}
  .hero-bar .container{grid-template-columns:1fr;gap:24px}
  .hero-bar .stat-row{grid-template-columns:repeat(4,1fr)}
  .cert-wall{grid-template-columns:repeat(3,1fr)}
  .series-strip .series-card{flex-basis:calc((100% - 44px)/3)}
  .strip-btn{width:40px;height:40px;font-size:24px}
}
@media (max-width:860px){
  .series-strip .series-card{flex-basis:calc((100% - 22px)/2)}
  .strip-btn{display:none}
  .nav{position:fixed;inset:74px 0 auto 0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);transform:translateY(-140%);transition:.3s;max-height:calc(100vh - 74px);overflow:auto}
  .nav.open{transform:none}
  .nav a{padding:13px 14px}
  .lang{border-left:0;padding-left:0;margin-left:0;border-top:1px solid var(--line);padding-top:12px;margin-top:8px}
  .burger{display:block}
  .g-3,.g-2,.g-4,.extras,.checklist,.promise-list,.project-list,.gallery,.contact-grid,.branch-grid{grid-template-columns:1fr}
  .culture-grid{grid-template-columns:1fr}
  .section{padding:52px 0}
  .product-block .head .txt{padding:24px}
  .spec-block{padding:0 18px 24px}
  .spec-details .spec-block{padding:0 18px 22px}
  .cta-band{padding:30px}
  .page-banner{padding:56px 0 48px}
  .hero-slider .slides{height:clamp(190px,46vw,300px)}
  .hero-slider .s-nav{width:38px;height:38px;font-size:22px}
  .hero-slider .prev{left:10px}
  .hero-slider .next{right:10px}
  .hero-bar .stat-row{grid-template-columns:repeat(2,1fr)}
  .photo-row{grid-template-columns:repeat(2,1fr)}
  .cert-wall{grid-template-columns:repeat(2,1fr)}
  .contact-photos{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr;gap:0}
  .news-item .thumb img{height:200px;min-height:0}
  .news-item .body{padding:20px 22px}
  .news-article{padding:22px}
  .series-tabs{justify-content:flex-start;flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px}
  .series-tabs .tab{flex:0 0 auto}
}
@media (max-width:520px){
  .site-footer .cols{grid-template-columns:1fr}
  .brand .brand-txt{display:none}
  .series-strip .series-card{flex-basis:86%}
}

/* ============ 首页 hero-bar 按钮组 ============ */
.hb-btns{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}

/* ============ 首页 · 工程案例 / 典型客户卡片 ============ */
.case-grid{grid-template-columns:repeat(3,1fr)}
.case-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);color:inherit;text-decoration:none;transition:.25s}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:#cfe0f2}
.case-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.case-card .thumb img{width:100%;height:100%;object-fit:cover;transition:.5s}
.case-card:hover .thumb img{transform:scale(1.05)}
.case-card .cc-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.case-card h3{font-size:17.5px;margin-bottom:8px}
.case-card p{color:var(--muted);font-size:14.5px;margin:0 0 14px}
.case-card .cc-more{margin-top:auto;font-weight:700;font-size:14px;color:var(--primary)}
.case-card:hover .cc-more{text-decoration:underline}

/* ============ 产品中心 · 系列图集 ============ */
.prod-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
.prod-gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow)}

/* ============ 关于我们 · 中高实力证书分组 ============ */
/* 同样加 min-width:0：.cert-group 是 .cert-groups 的 grid item，内部证书墙若被内容撑开
   会连带把父级撑爆（实测 cert-group/cg-title/cert-wall 均在溢出元素列表中） */
.cert-groups{display:grid;gap:40px;margin-top:34px}
.cert-groups>.cert-group{min-width:0}
.cert-group .cg-title{display:flex;align-items:center;gap:10px;font-size:19px;margin:0 0 16px;min-width:0}
.cert-group .cg-count{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;min-width:34px;height:26px;padding:0 8px;border-radius:999px;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;font-size:14px;font-weight:800}
.cert-group .cg-title .cg-text{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

@media (max-width:1024px){
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .prod-gallery{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .hero-bar .container{grid-template-columns:1fr;gap:18px}
  .case-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .case-grid{grid-template-columns:1fr}
  .prod-gallery{grid-template-columns:1fr}
  .hero-bar .stat-row{grid-template-columns:1fr 1fr}
}

/* ===== 关于我们 · 二级栏目（页内导航条） ===== */
.about-subnav{position:sticky;top:74px;z-index:50;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.about-subnav .container{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
.about-subnav .container::-webkit-scrollbar{display:none}
.about-subnav a{flex:0 0 auto;padding:13px 18px;font-size:14.5px;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap}
.about-subnav a:hover{color:var(--primary)}
.about-subnav a.active{color:var(--primary);border-bottom-color:var(--primary)}
section[id]{scroll-margin-top:134px}

/* ===== 头部导航 · 关于我们下拉二级栏目 ===== */
.nav .has-sub{position:relative}
.nav .has-sub>.sub{display:none;position:absolute;top:calc(100% + 4px);left:0;min-width:158px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow-lg);padding:6px;z-index:70}
.nav .has-sub:hover>.sub,.nav .has-sub:focus-within>.sub{display:block}
.nav .has-sub .sub a{display:block;padding:9px 12px;font-size:14px;border-radius:8px}
.nav .has-sub>a::after{content:"\25BE";margin-left:3px;font-size:11px;opacity:.6}
@media (max-width:960px){
  .nav .has-sub>.sub{display:block;position:static;border:0;box-shadow:none;padding:2px 0 6px 14px;min-width:0;border-radius:0;background:transparent}
  .nav .has-sub .sub a{padding:8px 12px;font-size:14px;color:var(--muted)}
  .nav .has-sub>a::after{content:""}
}

/* ===== 产品中心 · 图片完整显示不裁切（移动式/配套等比例差异大的图） ===== */
.product-block .head .imgwrap{background:#fff}
.product-block .head .imgwrap img{object-fit:contain}
.prod-gallery img{object-fit:contain;background:#fff}
.extra img{object-fit:contain;background:#fff}

/* ===== 头部下拉 · 子项不换行（产品系列名较长） ===== */
.nav .has-sub .sub a{white-space:nowrap}