/* =========================================================
   硕威泵业官网（sowoi.cn）· 全局样式
   ========================================================= */
:root{
  --ink:#152430;
  --ink2:#4c5f70;
  --ink3:#8496a5;
  --line:#e2e9f0;
  --line2:#cdd9e3;
  --bg:#ffffff;
  --bg2:#f4f8fb;
  --bg3:#e8f0f7;
  --brand:#0b4a86;
  --brand2:#1265ad;
  --brand3:#3d8fd1;
  --accent:#0e9488;
  --accent2:#12b3a4;
  --warn:#c0392b;
  --shadow-s:0 1px 3px rgba(16,42,67,.08);
  --shadow-m:0 8px 28px rgba(16,42,67,.10);
  --shadow-l:0 18px 50px rgba(16,42,67,.16);
  --r-s:8px; --r-m:14px; --r-l:20px;
  --font:"Segoe UI",system-ui,-apple-system,"Microsoft YaHei","PingFang SC",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit}

/* ---------- 通用布局 ---------- */
.wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section.tight{padding:64px 0}
.bg2{background:var(--bg2)}
.bg3{background:linear-gradient(180deg,#0a3a6b,#0b4a86)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:500;letter-spacing:.08em;color:var(--brand2);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand2);border-radius:2px}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .eyebrow::before{display:none}
.sec-head.center .eyebrow{justify-content:center}
h1,h2,h3,h4{font-weight:600;line-height:1.3;letter-spacing:-.01em}
h2{font-size:34px}
h3{font-size:21px}
.sec-head p{color:var(--ink2);margin-top:12px;font-size:16.5px}
.on-dark{color:#fff}
.on-dark p{color:rgba(255,255,255,.78)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:500;cursor:pointer;
  transition:transform .18s cubic-bezier(.16,1,.3,1),box-shadow .18s,background .18s,color .18s;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-s)}
.btn-primary:hover{background:var(--brand2);box-shadow:var(--shadow-m);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--line2)}
.btn-ghost:hover{border-color:var(--brand);background:var(--bg2)}
.btn-ghost.light{color:#fff;border-color:rgba(255,255,255,.4)}
.btn-ghost.light:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{transform:translateY(-1px);box-shadow:var(--shadow-m)}
.btn svg{width:16px;height:16px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:#082f57;color:rgba(255,255,255,.8);font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px;gap:16px}
.topbar span{display:inline-flex;align-items:center;gap:6px}
.topbar svg{width:14px;height:14px;opacity:.7}
.topbar a{color:#fff}
.topbar .tb-r{display:flex;gap:22px}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--line);
  transition:box-shadow .25s;
}
.nav.scrolled{box-shadow:var(--shadow-s)}
.nav .wrap{display:flex;align-items:center;height:74px;gap:32px}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo img{height:34px;width:auto}
.logo .lname{font-size:19px;font-weight:500;letter-spacing:.02em;color:var(--ink)}
.logo .lname small{display:block;font-size:10.5px;font-weight:400;color:var(--ink3);letter-spacing:.14em}
.nav-links{display:flex;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;padding:10px 15px;font-size:15px;color:var(--ink2);
  border-radius:8px;transition:color .18s,background .18s;
}
.nav-links a:hover{color:var(--brand);background:var(--bg2)}
.nav-links a.active{color:var(--brand);font-weight:500}
.nav-links a.active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-cta{flex-shrink:0}
.burger{display:none;margin-left:auto;background:none;border:none;cursor:pointer;padding:8px}
.burger span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0;border-radius:2px;transition:.25s}
.mobile-menu{display:none}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(160deg,#072f5a 0%,#0b4a86 55%,#1265ad 100%);position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;opacity:.16;
  background-image:
    linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 80% 70% at 30% 40%,#000 0%,transparent 70%);
}
.hero .wrap{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;
  gap:56px;align-items:center;padding-top:88px;padding-bottom:96px;
}
.hero .eyebrow{color:#7fd4ff}
.hero .eyebrow::before{background:#7fd4ff}
.hero h1{
  color:#fff;font-size:50px;line-height:1.16;letter-spacing:-.02em;
}
.hero h1 em{font-style:normal;color:#7fd4ff}
.hero .lead{
  color:rgba(255,255,255,.82);font-size:17.5px;margin-top:20px;max-width:34em;
}
.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-visual{position:relative}
.hero-visual .hv-main{
  border-radius:var(--r-l);overflow:hidden;box-shadow:var(--shadow-l);
  border:1px solid rgba(255,255,255,.16);
}
.hero-visual .hv-main img{width:100%;height:auto}
.float-card{
  position:absolute;background:rgba(255,255,255,.96);border-radius:var(--r-m);
  padding:14px 18px;box-shadow:var(--shadow-l);
  animation:float 5s ease-in-out infinite;
}
.float-card .fc-k{font-size:12px;color:var(--ink3);letter-spacing:.04em}
.float-card .fc-v{font-size:24px;font-weight:500;color:var(--brand);letter-spacing:-.01em}
.float-card .fc-v small{font-size:13px;color:var(--ink2);font-weight:400}
.fc-a{left:-26px;bottom:44px}
.fc-b{right:-20px;top:44px;animation-delay:-2.4s}
@keyframes float{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-9px)}
}
@media (prefers-reduced-motion:reduce){
  .float-card{animation:none}
  html{scroll-behavior:auto}
}

/* ---------- 数据条 ---------- */
.stats{
  background:#fff;border-bottom:1px solid var(--line);
}
.stats .wrap{
  display:grid;grid-template-columns:repeat(4,1fr);
}
.stat{
  padding:34px 20px;text-align:center;position:relative;
}
.stat+.stat::before{
  content:"";position:absolute;left:0;top:32%;height:36%;width:1px;background:var(--line);
}
.stat .sv{font-size:38px;font-weight:500;color:var(--brand);letter-spacing:-.02em;line-height:1.1}
.stat .sv small{font-size:16px;font-weight:400;color:var(--ink3);margin-left:2px}
.stat .sk{font-size:13.5px;color:var(--ink2);margin-top:8px}

/* ---------- 场景卡片 ---------- */
.sol-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.sol-card{
  position:relative;border-radius:var(--r-m);padding:26px 22px 24px;
  background:#fff;border:1px solid var(--line);overflow:hidden;
  transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s,border-color .3s;
  display:flex;flex-direction:column;min-height:210px;
}
.sol-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-m);border-color:var(--brand3)}
.sol-card::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .35s;
}
.sol-card:hover::after{transform:scaleX(1)}
.sol-ico{
  width:46px;height:46px;border-radius:12px;background:var(--bg3);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.sol-ico svg{width:24px;height:24px;stroke:var(--brand);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.sol-card h3{font-size:17.5px;margin-bottom:8px}
.sol-card p{font-size:13.5px;color:var(--ink2);flex:1}
.sol-card .more{
  margin-top:16px;font-size:13px;color:var(--brand);font-weight:500;
  display:inline-flex;align-items:center;gap:5px;
}
.sol-card .more svg{width:14px;height:14px;transition:transform .2s}
.sol-card:hover .more svg{transform:translateX(3px)}

/* ---------- 板块/能力 ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.cap-card{
  display:grid;grid-template-columns:170px 1fr;border-radius:var(--r-l);
  overflow:hidden;border:1px solid var(--line);background:#fff;
  transition:box-shadow .3s,transform .3s;
}
.cap-card:hover{box-shadow:var(--shadow-m);transform:translateY(-3px)}
.cap-card .cc-img{background:var(--bg2);display:flex;align-items:center;justify-content:center;padding:16px}
.cap-card .cc-img img{max-height:150px;width:auto;object-fit:contain}
.cap-card .cc-body{padding:22px 24px}
.cap-card .cc-tag{
  display:inline-block;font-size:11.5px;color:var(--brand2);background:var(--bg3);
  padding:3px 10px;border-radius:999px;margin-bottom:10px;letter-spacing:.04em;
}
.cap-card h3{font-size:18.5px;margin-bottom:8px}
.cap-card p{font-size:13.8px;color:var(--ink2);margin-bottom:12px}
.cap-card .link{font-size:13.5px;color:var(--brand);font-weight:500;display:inline-flex;align-items:center;gap:5px}
.cap-card .link svg{width:14px;height:14px}

/* ---------- 产品 ---------- */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:38px}
.chip{
  padding:9px 20px;border-radius:999px;border:1px solid var(--line2);
  background:#fff;color:var(--ink2);font-size:14px;cursor:pointer;
  transition:.2s;font-weight:500;
}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.chip.active{background:var(--brand);border-color:var(--brand);color:#fff}

.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.prod-card{
  border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
  background:#fff;display:flex;flex-direction:column;
  transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s;
}
.prod-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-m)}
.prod-card.hide{display:none}
.prod-card .pc-img{
  background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;padding:18px;height:210px;
}
.prod-card .pc-img img{max-height:100%;width:auto;object-fit:contain;transition:transform .35s}
.prod-card .pc-img.photo{padding:0;height:auto;aspect-ratio:1/1}
.prod-card .pc-img.photo img{width:100%;height:100%;max-height:none;object-fit:cover}
.prod-card:hover .pc-img img{transform:scale(1.06)}
.prod-card .pc-body{padding:16px 18px 18px;flex:1;display:flex;flex-direction:column}
.prod-card .pc-cat{font-size:11.5px;color:var(--brand2);letter-spacing:.04em;margin-bottom:6px}
.prod-card h3{font-size:15.5px;font-weight:500;line-height:1.4}
.prod-card .pc-ops{display:flex;gap:8px;margin-top:auto;padding-top:14px}
.prod-card .pc-ops a{
  flex:1;text-align:center;font-size:12.5px;padding:7px 0;border-radius:7px;
  border:1px solid var(--line2);color:var(--ink2);font-weight:500;transition:.2s;
}
.prod-card .pc-ops a:hover{border-color:var(--brand);color:var(--brand)}
.prod-card .pc-ops a.q{background:var(--brand);border-color:var(--brand);color:#fff}
.prod-card .pc-ops a.q:hover{background:var(--brand2)}

/* ---------- 产品系列卡（多机型合并为一张卡，点击进入系列页） ---------- */
.prod-card.series{color:inherit;text-decoration:none}
.prod-card.series .pc-ops{margin-top:auto}
.prod-card.series .pc-ops .ph{flex:1}
.prod-card.series .pc-ops .more{
  flex:1;text-align:center;font-size:12.5px;padding:7px 0;border-radius:7px;
  border:1px solid var(--brand);
  background:var(--brand);color:#fff;font-weight:600;transition:.2s;
}
.prod-card.series:hover .pc-ops .more{background:var(--brand2)}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case-card{
  border-radius:var(--r-m);overflow:hidden;background:#fff;border:1px solid var(--line);
  transition:transform .3s,box-shadow .3s;display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-m)}
.case-card .cs-img{height:200px;background:var(--bg3);overflow:hidden;position:relative}
.case-card .cs-img img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.case-card:hover .cs-img img{transform:scale(1.05)}
.case-card .cs-img.multi{display:grid;grid-template-columns:1fr 1fr 1fr;gap:2px;padding:0}
.case-card .cs-img.multi img{width:100%;height:100%;object-fit:cover;min-width:0}
.case-card .cs-img.multi.layout-5{grid-template-columns:repeat(6,1fr);grid-template-rows:1fr 1fr}
.case-card .cs-img.multi.layout-5 img:nth-child(-n+2){grid-column:span 3}
.case-card .cs-img.multi.layout-5 img:nth-child(n+3){grid-column:span 2}
.case-card .cs-img.multi.layout-4{grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr}
.case-card .cs-img.multi.layout-2{grid-template-columns:1fr 1fr}
.case-card .cs-badge{
  position:absolute;top:12px;left:12px;background:rgba(11,74,134,.92);color:#fff;
  font-size:11.5px;padding:4px 11px;border-radius:999px;letter-spacing:.03em;
}
.case-card .cs-body{padding:20px 22px 22px;flex:1;display:flex;flex-direction:column}
.case-card h3{font-size:16.5px;margin-bottom:8px}
.case-card p{font-size:13.5px;color:var(--ink2);flex:1}
.case-card .cs-meta{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:6px 18px;font-size:12.5px;color:var(--ink3);
}
.case-card .cs-meta span{white-space:nowrap}
.case-card .cs-meta b{color:var(--brand);font-weight:500}

/* ---------- 案例详情页 ---------- */
.case-detail .cd-meta{
  display:flex;flex-wrap:wrap;justify-content:center;gap:12px 48px;
  padding:20px 24px;border:1px solid var(--line);border-radius:14px;background:var(--bg2);
}
.case-detail .cd-meta-item{text-align:center}
.case-detail .cd-meta-item span{display:block;font-size:12px;color:var(--ink3);margin-bottom:4px}
.case-detail .cd-meta-item b{font-size:15px;color:var(--ink);font-weight:600}
.case-detail .cd-body{max-width:860px;margin:26px auto 0;text-align:center}
.case-detail .cd-body p{font-size:15.5px;line-height:2;color:var(--ink2);margin-top:14px;text-align:center}
.case-detail .cd-gal-title{font-size:20px;margin-top:44px}
.case-detail .cd-gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:20px}
.case-detail .cd-item{
  position:relative;display:block;border-radius:14px;overflow:hidden;
  border:1px solid var(--line);background:#f5f7fa;
}
.case-detail .cd-item img{
  width:100%;aspect-ratio:4/3;object-fit:cover;display:block;transition:transform .35s;
}
.case-detail .cd-item:hover img{transform:scale(1.03)}
.case-detail .cd-zoom{
  position:absolute;left:12px;bottom:12px;padding:5px 12px;border-radius:99px;
  background:rgba(11,42,74,.75);color:#fff;font-size:12px;opacity:0;transition:.25s;
}
.case-detail .cd-item:hover .cd-zoom{opacity:1}
@media(max-width:720px){.case-detail .cd-gallery{grid-template-columns:1fr}.case-detail .cd-meta{gap:12px 24px}}

/* 系列页机型图库（正方图完整展示，带型号标签，3 列） */
.case-detail .cd-gallery.qby{grid-template-columns:repeat(3,1fr);gap:16px}
.case-detail .cd-gallery.qby .cd-item{background:#0b2a4a;border-color:transparent}
.case-detail .cd-gallery.qby .cd-item img{aspect-ratio:1/1;object-fit:contain}
.case-detail .cd-name{
  position:absolute;left:46px;top:10px;padding:4px 11px;border-radius:99px;
  background:rgba(11,42,74,.8);color:#fff;font-size:12px;letter-spacing:.02em;
}
/* 系列页图库序号角标（横向 1 2 3 4 5…） */
.case-detail .cd-no{
  position:absolute;left:10px;top:10px;width:26px;height:26px;line-height:26px;text-align:center;
  border-radius:8px;background:var(--brand);color:#fff;font-size:12.5px;font-weight:700;z-index:2;
}
@media(max-width:980px){.case-detail .cd-gallery.qby{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.case-detail .cd-gallery.qby{grid-template-columns:repeat(2,1fr)}}

/* ---------- 解决方案区块 ---------- */
.sol-section{padding:74px 0;border-bottom:1px solid var(--line)}
.sol-section:nth-child(even){background:var(--bg2)}
.sol-nav{
  position:sticky;top:74px;z-index:40;background:rgba(255,255,255,.95);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);
}
.sol-nav .wrap{display:flex;gap:6px;overflow-x:auto;padding:0 24px}
.sol-nav a{
  padding:15px 16px;font-size:14.5px;color:var(--ink2);white-space:nowrap;
  border-bottom:2px solid transparent;font-weight:500;transition:.2s;
}
.sol-nav a:hover{color:var(--brand)}
.sol-nav a.active{color:var(--brand);border-color:var(--brand)}
.sol-layout{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.sol-copy .tag-row{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0 22px}
.sol-copy .tag-row span{
  font-size:12.5px;background:var(--bg3);color:var(--brand2);
  padding:5px 13px;border-radius:999px;
}
.sol-copy ul{margin:18px 0 26px}
.sol-copy ul li{
  position:relative;padding-left:24px;margin:9px 0;font-size:14.8px;color:var(--ink2);
}
.sol-copy ul li::before{
  content:"";position:absolute;left:2px;top:9px;width:8px;height:8px;
  border-radius:2px;background:var(--accent);transform:rotate(45deg);
}
.sol-visual{border-radius:var(--r-l);overflow:hidden;box-shadow:var(--shadow-m);background:#fff;border:1px solid var(--line)}
.pain-box{
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--warn);
  border-radius:0 var(--r-s) var(--r-s) 0;padding:14px 18px;margin-bottom:18px;
}
.pain-box b{display:block;font-size:13px;color:var(--warn);letter-spacing:.06em;margin-bottom:4px}
.pain-box p{font-size:14px;color:var(--ink2)}

/* ---------- 服务 / 时间线 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:30px 26px;
  transition:transform .3s,box-shadow .3s;
}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.svc-card .num{
  font-size:13px;font-weight:500;color:var(--brand3);letter-spacing:.1em;margin-bottom:12px;
}
.svc-card h3{font-size:18px;margin-bottom:10px}
.svc-card p{font-size:14px;color:var(--ink2)}
.svc-card ul{margin-top:14px}
.svc-card ul li{
  font-size:13.5px;color:var(--ink2);padding:5px 0 5px 18px;position:relative;
}
.svc-card ul li::before{
  content:"";position:absolute;left:0;top:13px;width:9px;height:1.5px;background:var(--brand3);
}

.dl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.dl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
  padding:24px 22px;text-align:center;transition:.28s;position:relative;overflow:hidden;
}
.dl-card:hover{border-color:var(--brand3);box-shadow:var(--shadow-m);transform:translateY(-4px)}
.dl-card .dl-ico{
  width:52px;height:52px;margin:0 auto 14px;border-radius:14px;background:var(--bg3);
  display:flex;align-items:center;justify-content:center;
}
.dl-card .dl-ico svg{width:26px;height:26px;stroke:var(--brand);fill:none;stroke-width:1.5}
.dl-card h3{font-size:16px;margin-bottom:6px}
.dl-card p{font-size:12.8px;color:var(--ink3);margin-bottom:16px}
.dl-lock{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--ink3);
  background:var(--bg2);padding:5px 12px;border-radius:999px;
}
.dl-lock svg{width:12px;height:12px}

.faq{max-width:840px;margin:0 auto}
.faq-h{margin:0;font-size:inherit;font-weight:inherit}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:none;text-align:left;cursor:pointer;
  padding:22px 44px 22px 0;font-size:16.5px;font-weight:500;color:var(--ink);
  position:relative;font-family:inherit;
}
.faq-q::after,.faq-q::before{
  content:"";position:absolute;right:6px;top:50%;width:14px;height:2px;
  background:var(--brand);border-radius:2px;transition:.25s;
}
.faq-q::before{transform:rotate(90deg)}
.faq-item.open .faq-q::before{transform:rotate(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s cubic-bezier(.16,1,.3,1)}
.faq-a p{padding:0 40px 22px 0;font-size:14.8px;color:var(--ink2)}

/* ---------- 关于 ---------- */
.about-split{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.about-split .as-img{border-radius:var(--r-l);overflow:hidden;box-shadow:var(--shadow-m)}
.culture-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.cul-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-m);padding:26px 22px;color:#fff;
}
.cul-card .ck{font-size:12.5px;color:#7fd4ff;letter-spacing:.1em;margin-bottom:10px}
.cul-card .cv{font-size:17px;font-weight:500;line-height:1.5}
.cul-card .cd{font-size:13px;color:rgba(255,255,255,.7);margin-top:10px}

.tl{position:relative;padding-left:34px}
.tl::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:var(--line2)}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-31px;top:6px;width:14px;height:14px;
  border-radius:50%;background:#fff;border:3px solid var(--brand);
}
.tl-item .ty{font-size:19px;font-weight:500;color:var(--brand);letter-spacing:-.01em}
.tl-item .tt{font-size:15.5px;font-weight:500;margin-top:3px}
.tl-item .td{font-size:14px;color:var(--ink2);margin-top:4px}

.honor-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.honor-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-s);
  overflow:hidden;transition:.28s;cursor:pointer;
}
.honor-card:hover{box-shadow:var(--shadow-m);transform:translateY(-3px);border-color:var(--brand3)}
.honor-card .h-img{height:170px;background:#fff;display:flex;align-items:center;justify-content:center;padding:10px}
.honor-card .h-img img{max-height:100%;object-fit:contain}
.honor-card .h-cap{
  padding:10px 12px;font-size:12.5px;color:var(--ink2);text-align:center;
  border-top:1px solid var(--line);background:var(--bg2);
}

.addr-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.addr-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:28px 26px;
  display:flex;gap:18px;
}
.addr-card .ai{
  width:46px;height:46px;flex-shrink:0;border-radius:12px;background:var(--bg3);
  display:flex;align-items:center;justify-content:center;
}
.addr-card .ai svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.6}
.addr-card h3{font-size:16.5px;margin-bottom:8px}
.addr-card p{font-size:14px;color:var(--ink2)}

/* ---------- CTA band ---------- */
.cta-band{padding:74px 0;background:linear-gradient(135deg,#0a3a6b,#1265ad);position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.14;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:52px 52px;
}
.cta-band .wrap{position:relative;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:30px}
.cta-band p{color:rgba(255,255,255,.8);margin-top:10px;font-size:16px}
.cta-band .cb-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 表单 ---------- */
.form-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-l);
  padding:38px 36px;box-shadow:var(--shadow-s);max-width:620px;
}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.f-field{margin-bottom:18px}
.f-field label{display:block;font-size:13.5px;font-weight:500;margin-bottom:7px;color:var(--ink)}
.f-field label i{color:var(--warn);font-style:normal;margin-left:2px}
.f-field input,.f-field select,.f-field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line2);border-radius:var(--r-s);
  font-size:14.5px;font-family:inherit;background:var(--bg2);color:var(--ink);
  transition:border-color .18s,background .18s;
}
.f-field textarea{resize:vertical;min-height:104px}
.f-field input:focus,.f-field select:focus,.f-field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
}
.f-field .err{display:none;font-size:12.5px;color:var(--warn);margin-top:5px}
.f-field.invalid input,.f-field.invalid select{border-color:var(--warn)}
.f-field.invalid .err{display:block}
.form-ok{
  display:none;text-align:center;padding:34px 20px;
}
.form-ok.show{display:block}
.form-ok .ok-ico{
  width:58px;height:58px;margin:0 auto 16px;border-radius:50%;
  background:rgba(14,148,136,.12);display:flex;align-items:center;justify-content:center;
}
.form-ok .ok-ico svg{width:30px;height:30px;stroke:var(--accent);fill:none;stroke-width:2.4}
.form-ok h3{margin-bottom:8px}
.form-ok p{font-size:14.5px;color:var(--ink2)}
.form-err{
  display:none;margin-top:12px;padding:10px 14px;border-radius:8px;
  background:#fdeeee;border:1px solid #f6cfd4;color:#b52034;font-size:13px;text-align:center;
}
.form-err.show{display:block}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
  padding:24px 26px;margin-bottom:16px;display:flex;gap:16px;
}
.info-card .ii{
  width:42px;height:42px;flex-shrink:0;border-radius:11px;background:var(--bg3);
  display:flex;align-items:center;justify-content:center;
}
.info-card .ii svg{width:20px;height:20px;stroke:var(--brand);fill:none;stroke-width:1.6}
.info-card .ik{font-size:12.5px;color:var(--ink3);letter-spacing:.05em}
.info-card .iv{font-size:16px;font-weight:500;color:var(--ink)}
.info-card .iv small{display:block;font-size:13px;font-weight:400;color:var(--ink2);margin-top:2px}

/* ---------- 页脚 ---------- */
footer{background:#072544;color:rgba(255,255,255,.72);padding:64px 0 0;font-size:14px}
.ft-grid{display:grid;grid-template-columns:1.4fr .9fr .9fr 1.5fr;gap:36px;padding-bottom:48px}
.ft-grid h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:500}
.ft-grid p,.ft-grid li{font-size:13.5px;line-height:2;color:rgba(255,255,255,.66)}
.ft-grid a:hover{color:#fff}
.ft-grid address{font-style:normal}
.ft-grid address p{margin-bottom:10px;font-size:13px;white-space:nowrap}
.ft-grid address span{color:rgba(255,255,255,.86)}
.ft-brand img{filter:brightness(0) invert(1);height:32px;margin-bottom:16px}
.ft-brand p{max-width:30em}
.ft-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.5);
}

/* ---------- 悬浮询价 ---------- */
.fab-col{
  position:fixed;right:22px;bottom:26px;z-index:70;display:flex;flex-direction:column;gap:10px;
}
.fab{
  width:52px;height:52px;border-radius:50%;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-m);transition:transform .2s,box-shadow .2s;
}
.fab:hover{transform:translateY(-3px);box-shadow:var(--shadow-l)}
.fab svg{width:23px;height:23px}
.fab-call{background:#fff;border:1px solid var(--line)}
.fab-call svg{stroke:var(--brand);fill:none;stroke-width:1.7}
.fab-ask{background:var(--brand)}
.fab-ask span{
  font-size:12.5px;color:#fff;font-weight:500;letter-spacing:.03em;
}
.fab-ask{width:auto;height:52px;border-radius:999px;padding:0 20px;gap:8px}
.fab-ask svg{stroke:#fff;fill:none;stroke-width:1.8}

/* ---------- 询价弹窗 ---------- */
.modal{
  position:fixed;inset:0;z-index:90;display:none;align-items:center;justify-content:center;
  background:rgba(7,32,58,.55);backdrop-filter:blur(4px);padding:24px;
}
.modal.show{display:flex}
.modal-box{
  background:#fff;border-radius:var(--r-l);max-width:560px;width:100%;
  max-height:88vh;overflow-y:auto;position:relative;
  animation:pop .3s cubic-bezier(.16,1,.3,1);
}
@keyframes pop{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
.modal-close{
  position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;
  border:none;background:var(--bg2);cursor:pointer;font-size:19px;color:var(--ink2);
  line-height:1;transition:.2s;
}
.modal-close:hover{background:var(--bg3);color:var(--ink)}
.modal-box .form-wrap{border:none;box-shadow:none;max-width:none;padding:34px 34px 30px}

/* ---------- 滚动显现 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.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}
}

/* ---------- 页头（内页） ---------- */
.page-hero{
  background:linear-gradient(140deg,#072f5a,#0b4a86 60%,#1265ad);
  padding:74px 0 66px;position:relative;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;opacity:.15;
  background-image:linear-gradient(rgba(255,255,255,.55) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(ellipse 70% 90% at 20% 30%,#000,transparent 75%);
}
.page-hero .wrap{position:relative}
.page-hero .crumb{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:16px}
.page-hero .crumb ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}
.page-hero .crumb li+li::before{content:"/";margin-right:8px;opacity:.55}
.page-hero .crumb a{color:rgba(255,255,255,.8)}
.page-hero h1{color:#fff;font-size:40px;letter-spacing:-.02em}
.page-hero p{color:rgba(255,255,255,.78);margin-top:14px;max-width:44em;font-size:16.5px}

/* ---------- 占位说明 ---------- */
.demo-note{
  background:#fff8e6;border:1px solid #f0dca8;border-radius:var(--r-s);
  padding:12px 16px;font-size:13px;color:#7a5c14;display:flex;gap:10px;align-items:flex-start;
}
.demo-note svg{width:16px;height:16px;flex-shrink:0;margin-top:3px;stroke:#b8860b;fill:none;stroke-width:1.8}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .sol-grid{grid-template-columns:repeat(3,1fr)}
  .prod-grid{grid-template-columns:repeat(3,1fr)}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .honor-grid{grid-template-columns:repeat(4,1fr)}
  .ft-grid{grid-template-columns:1fr 1fr}
  .ft-grid address p{white-space:normal}
  .hero h1{font-size:42px}
}
@media (max-width:860px){
  .section{padding:64px 0}
  .nav .wrap{height:66px}
  .nav-links,.nav-cta{display:none}
  .burger{display:block}
  .mobile-menu{
    display:none;position:fixed;inset:66px 0 0;background:#fff;z-index:59;
    padding:14px 24px 40px;overflow-y:auto;
  }
  .mobile-menu.show{display:block}
  .mobile-menu a{
    display:block;padding:15px 4px;font-size:16.5px;border-bottom:1px solid var(--line);
    color:var(--ink);
  }
  .mobile-menu .mm-cta{margin-top:22px}
  .topbar .tb-r span:nth-child(3){display:none}
  .hero .wrap{grid-template-columns:1fr;gap:40px;padding-top:56px;padding-bottom:64px}
  .hero h1{font-size:34px}
  .float-card{display:none}
  .stats .wrap{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3)::before{display:none}
  .sol-grid{grid-template-columns:repeat(2,1fr)}
  .cap-grid{grid-template-columns:1fr}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .case-grid,.svc-grid{grid-template-columns:1fr}
  .sol-layout,.about-split,.contact-grid{grid-template-columns:1fr;gap:32px}
  .sol-nav{top:66px}
  .culture-grid{grid-template-columns:repeat(2,1fr)}
  .dl-grid{grid-template-columns:repeat(2,1fr)}
  .honor-grid{grid-template-columns:repeat(3,1fr)}
  .addr-grid{grid-template-columns:1fr}
  .f-row{grid-template-columns:1fr}
  .cta-band .wrap{flex-direction:column;align-items:flex-start}
  h2{font-size:27px}
  .page-hero h1{font-size:30px}
  .form-wrap{padding:26px 22px}
}
@media (max-width:560px){
  .sol-grid,.prod-grid,.stats .wrap{grid-template-columns:1fr 1fr}
  .stat{padding:24px 12px}
  .stat .sv{font-size:28px}
  .honor-grid{grid-template-columns:repeat(2,1fr)}
  .ft-grid{grid-template-columns:1fr}
  .sol-card{min-height:auto}
  .prod-card .pc-img{height:170px}
}

/* ---------- 落地页风格首页轮播 ---------- */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.land-hero{position:relative;overflow:hidden;background:#062747}
.land-track{display:flex;transition:transform .65s cubic-bezier(.4,0,.2,1)}
.land-slide{flex:0 0 100%;display:block}
.land-slide img{display:block;width:100%;height:auto;max-height:640px;object-fit:cover}
.land-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:46px;height:46px;border:none;border-radius:50%;cursor:pointer;
  background:rgba(6,39,71,.45);color:#fff;font-size:30px;line-height:44px;text-align:center;
  backdrop-filter:blur(4px);transition:background .25s;
}
.land-arrow:hover{background:rgba(6,39,71,.75)}
.land-arrow.prev{left:18px}
.land-arrow.next{right:18px}
.land-dots{
  position:absolute;bottom:16px;left:0;right:0;z-index:3;
  display:flex;justify-content:center;gap:8px;
}
.land-dots button{
  width:9px;height:9px;border:none;border-radius:5px;cursor:pointer;
  background:rgba(255,255,255,.45);transition:all .3s;padding:0;
}
.land-dots button.on{background:#fff;width:24px}
@media(max-width:760px){
  .land-arrow{display:none}
  .land-slide img{max-height:none}
  .land-dots button{width:7px;height:7px}
  .land-dots button.on{width:18px}
}
.sol-visual img{display:block;width:100%;height:auto}

/* ---------- 首页 hero 三图轮换 ---------- */
.hv-carousel{position:relative}
.hv-carousel img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .8s ease}
.hv-carousel img.on{opacity:1;position:relative}
.hv-dots{
  position:absolute;bottom:12px;left:0;right:0;z-index:2;
  display:flex;justify-content:center;gap:7px;
}
.hv-dots button{
  width:8px;height:8px;border:none;border-radius:4px;cursor:pointer;padding:0;
  background:rgba(255,255,255,.5);transition:all .3s;
}
.hv-dots button.on{background:#fff;width:22px}

/* ---------- 产品概述与技术参数弹窗 ---------- */
.spec-data-wrap{display:none}
.spec-modal{position:fixed;inset:0;z-index:1000;display:none}
.spec-modal.on{display:block}
.spec-overlay{position:absolute;inset:0;background:rgba(10,22,40,.62);backdrop-filter:blur(3px)}
.spec-dialog{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:min(720px,calc(100vw - 32px));max-height:84vh;display:flex;flex-direction:column;
  background:#fff;border-radius:14px;box-shadow:0 24px 64px rgba(10,22,40,.35);overflow:hidden;
}
.spec-close{
  position:absolute;top:10px;right:12px;z-index:2;width:36px;height:36px;border:none;border-radius:50%;
  background:var(--bg3);color:var(--ink);font-size:22px;line-height:1;cursor:pointer;
}
.spec-close:hover{background:var(--brand);color:#fff}
.spec-body{overflow-y:auto;padding:26px 30px 18px}
.spec-body .spec-model{
  font-size:19px;font-weight:600;color:var(--ink);line-height:1.45;
  padding-bottom:14px;margin-bottom:16px;border-bottom:1px solid var(--line);
}
.spec-body .spec-model em{display:block;font-style:normal;font-weight:400;font-size:12.5px;color:var(--ink3);letter-spacing:.06em;margin-top:4px;text-transform:uppercase}
.spec-body h4{
  font-size:14.5px;color:var(--ink);margin:20px 0 8px;padding-left:10px;position:relative;
}
.spec-body h4::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:14px;border-radius:2px;background:var(--brand)}
.spec-body p{font-size:14px;color:var(--ink2);line-height:1.9;margin:0 0 6px}
.spec-body ul{margin:4px 0 10px;padding:0;list-style:none}
.spec-body li{
  font-size:14px;color:var(--ink2);line-height:1.8;padding:6px 0 6px 22px;position:relative;
  border-bottom:1px dashed var(--line);
}
.spec-body li::before{content:"";position:absolute;left:4px;top:14px;width:6px;height:6px;border-radius:50%;background:var(--brand2)}
.spec-body li:last-child{border-bottom:none}
.spec-foot{
  display:flex;gap:10px;justify-content:flex-end;align-items:center;
  padding:14px 30px;border-top:1px solid var(--line);background:var(--bg2);
}
.spec-foot .btn{padding:10px 20px;font-size:14px}
@media (max-width:640px){
  .spec-body{padding:22px 18px 12px}
  .spec-foot{padding:12px 18px;flex-wrap:wrap}
}