/* 竞满实业 · 设计系统 v2（主色取自 logo：深靛蓝 #202888） */
:root{
  --brand:#202888;
  --brand-dk:#121a5e;
  --brand-mid:#3540a0;
  --brand-lt:#eef0fa;
  --ink:#111827;
  --ink-2:#4b5563;
  --ink-3:#8a93a3;
  --line:#e3e6ee;
  --bg:#f7f8fb;
  --white:#fff;
  --accent:#b04a12;
  --ok:#187a5a;
  --r:6px;
  --shadow:0 1px 3px rgba(17,24,39,.05);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--white);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.wrap{max-width:1240px;margin:0 auto;padding:0 32px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}

/* ---------- 顶部条 ---------- */
.topbar{background:var(--brand-dk);color:#b9bfe0;font-size:13px;letter-spacing:.2px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:40px;gap:16px}
.topbar a{color:#b9bfe0}
.topbar a:hover{color:#fff}
.topbar .tb-right{display:flex;gap:22px;align-items:center;white-space:nowrap}
.topbar b{color:#fff;font-weight:500}

/* ---------- 页头 ---------- */
.header{background:#fff;border-bottom:1px solid var(--line)}
.header .wrap{display:flex;align-items:center;gap:32px;height:96px}
.logo{display:flex;align-items:center;flex-shrink:0}
.logo-img{height:46px;width:auto;display:block}
.header-search{margin-left:auto;display:flex;align-items:center;border:1px solid var(--line);border-radius:4px;
  overflow:hidden;background:#fbfbfd;max-width:360px;flex:1}
.header-search input{border:0;background:transparent;padding:11px 16px;font-size:14px;flex:1;outline:none;min-width:0}
.header-search button{border:0;background:var(--brand);color:#fff;padding:11px 20px;font-size:14px;cursor:pointer;letter-spacing:.5px}
.header-tel{font-size:12px;color:var(--ink-3);text-align:right;line-height:1.4;flex-shrink:0;letter-spacing:.3px}
.header-tel b{display:block;font-size:21px;color:var(--brand);font-weight:600;letter-spacing:.2px}

/* ---------- 导航 ---------- */
.nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav .wrap{display:flex;gap:4px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.nav .wrap::-webkit-scrollbar{display:none}
.nav a{color:var(--ink-2);font-size:15px;padding:16px 20px;white-space:nowrap;display:block;
  border-bottom:2px solid transparent;letter-spacing:.3px}
.nav a:hover{color:var(--brand)}
.nav a.on{color:var(--brand);border-bottom-color:var(--brand);font-weight:500}

/* ---------- 通用区块 ---------- */
.sec{padding:84px 0}
.sec.tight{padding:56px 0}
.sec.alt{background:var(--bg)}
.sec-head{margin-bottom:40px;max-width:760px}
.sec-head h2{font-size:30px;font-weight:600;letter-spacing:.5px;line-height:1.4}
.sec-head p{color:var(--ink-2);margin-top:10px;font-size:16px}
.sec-head .more{color:var(--brand);font-size:14px;letter-spacing:.3px}
.eyebrow{display:block;font-size:12px;letter-spacing:1.6px;color:var(--brand);margin-bottom:12px;font-weight:600}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:3px;font-size:15px;cursor:pointer;border:1px solid transparent;
  transition:.18s;letter-spacing:.5px;font-weight:500}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dk)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-line{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-line:hover{background:var(--brand);color:#fff}

/* ---------- 首屏 ---------- */
.hero{position:relative;background:#0d1236;color:#fff;overflow:hidden}
.hero .bg{position:absolute;inset:0;background:#0d1236}
.hero .bg img{width:100%;height:100%;object-fit:cover;opacity:.55}
.hero .bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,14,45,.94) 0%,rgba(10,14,45,.78) 45%,rgba(10,14,45,.25) 100%)}
.hero .wrap{position:relative;padding-top:88px;padding-bottom:80px;display:grid;
  grid-template-columns:1.35fr .65fr;gap:56px;align-items:center}
.hero h1{font-size:46px;line-height:1.32;font-weight:600;letter-spacing:1px}
.hero h1 em{font-style:normal;color:#fff;border-bottom:3px solid #4b57c4;padding-bottom:2px}
.hero p.lead{margin-top:22px;color:#c3c8e4;font-size:17px;line-height:1.9;max-width:620px}
.hero-cta{display:flex;gap:16px;margin-top:34px;flex-wrap:wrap}
.hero-facts{display:flex;gap:44px;margin-top:46px;padding-top:28px;border-top:1px solid rgba(255,255,255,.16);flex-wrap:wrap}
.hero-facts div b{display:block;font-size:26px;font-weight:600;color:#fff;letter-spacing:.5px}
.hero-facts div span{font-size:13px;color:#9aa2c8;letter-spacing:.3px}

/* 首屏询价卡 */
.hero-form{background:#fff;border-radius:6px;padding:28px;box-shadow:0 18px 50px rgba(6,10,40,.35);color:var(--ink)}
.hero-form h3{font-size:19px;font-weight:600;letter-spacing:.3px}
.hero-form .tip{font-size:12.5px;color:var(--ink-3);margin:6px 0 18px;line-height:1.6}
.hero-form .row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}
.hero-form input,.hero-form select,.hero-form textarea{width:100%;border:1px solid var(--line);border-radius:3px;
  padding:11px 12px;font-size:14px;font-family:inherit;outline:none;background:#fff;color:var(--ink)}
.hero-form input:focus,.hero-form select:focus,.hero-form textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(32,40,136,.08)}
.hero-form textarea{resize:vertical;min-height:76px;margin-bottom:14px}
.hero-form .btn{width:100%}
.hero-form .micro{font-size:11.5px;color:var(--ink-3);text-align:center;margin-top:12px;line-height:1.6}
.hero-form .micro b{color:var(--brand)}

/* ---------- 信任条 ---------- */
.trust{background:#fff;border-bottom:1px solid var(--line)}
.trust .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.trust .t{padding:26px 24px;border-right:1px solid var(--line);display:flex;gap:14px;align-items:flex-start}
.trust .t:last-child{border-right:0}
.trust .t .ic{width:34px;height:34px;border-radius:3px;background:var(--brand-lt);color:var(--brand);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:14px;font-weight:600}
.trust b{display:block;font-size:15px;line-height:1.45;letter-spacing:.2px}
.trust span{display:block;font-size:12.5px;color:var(--ink-3);line-height:1.6;margin-top:3px}

/* ---------- 三种路径 ---------- */
.ways{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.way{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:4px;
  padding:30px 26px;transition:.2s;position:relative}
.way:hover{border-color:var(--brand);box-shadow:0 10px 30px rgba(32,40,136,.09);transform:translateY(-3px)}
.way .no{font-size:11px;letter-spacing:2.5px;color:var(--brand);font-weight:600}
.way b{display:block;font-size:18px;margin:12px 0 10px;font-weight:600;letter-spacing:.2px}
.way p{font-size:14px;color:var(--ink-2);line-height:1.8;flex:1}
.way .go{margin-top:18px;font-size:14px;color:var(--brand);font-weight:500}

/* ---------- 品类 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cat{background:#fff;border:1px solid var(--line);border-radius:4px;overflow:hidden;transition:.2s;display:block}
.cat:hover{border-color:var(--brand);box-shadow:0 10px 26px rgba(32,40,136,.1);transform:translateY(-3px)}
/* 分类图：等比完整显示、四周留白，不裁切、不铺满 */
.cat .ph{aspect-ratio:4/3;background:#f7f8fa;border-bottom:1px solid #eef0f4;
  display:flex;align-items:center;justify-content:center;padding:8px 12px;overflow:hidden}
.cat .ph img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;
  object-fit:contain;mix-blend-mode:multiply;transition:.3s}
.cat:hover .ph img{transform:scale(1.05)}
.cat .bd{padding:15px 14px 18px;text-align:center}
.cat b{font-size:16px;font-weight:600;display:block;letter-spacing:.2px}
.cat span{font-size:12.5px;color:var(--ink-3);margin-top:4px;display:block;line-height:1.5}
.cat i{display:block;font-style:normal;font-size:12px;color:var(--brand);margin-top:10px;letter-spacing:.3px}

/* ---------- 产品卡 ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:4px;overflow:hidden;
  display:flex;flex-direction:column;transition:.2s;position:relative}
.pcard:hover{border-color:var(--brand);box-shadow:0 10px 26px rgba(32,40,136,.1)}
.pcard .ph{height:170px;background:#f2f4f8;display:flex;align-items:center;justify-content:center;padding:14px}
.pcard .ph img{max-height:140px;width:auto;object-fit:contain;mix-blend-mode:multiply}
.pcard .ph .noimg{font-size:12px;color:var(--ink-3);text-align:center;padding:0 10px}
.pcard .bd{padding:16px 18px 18px;flex:1;display:flex;flex-direction:column}
.pcard h4{font-size:15px;font-weight:600;line-height:1.5;min-height:46px;letter-spacing:.2px}
.pcard .std{margin-top:8px;display:flex;gap:6px;flex-wrap:wrap}
.tag{font-size:11px;padding:2px 8px;border-radius:2px;background:var(--brand-lt);color:var(--brand);white-space:nowrap;letter-spacing:.2px}
.tag.gray{background:#f1f3f7;color:var(--ink-2)}
.tag.tag-gb{background:#fdf3ec;color:var(--accent)}
.pcard .par{margin-top:12px;border-top:1px solid var(--line);padding-top:12px;font-size:12.5px;color:var(--ink-2);line-height:2}
.pcard .par b{color:var(--ink);font-weight:500}
.pcard .bar{display:flex;gap:8px;margin-top:auto;padding-top:14px}
.pcard .bar .btn{padding:9px 12px;font-size:13px;flex:1;border-radius:3px}
.pcard .cmp{position:absolute;top:10px;right:10px;background:rgba(255,255,255,.95);border:1px solid var(--line);
  border-radius:3px;font-size:11px;padding:3px 7px;display:flex;gap:4px;align-items:center;color:var(--ink-2);cursor:pointer}
.pcard .cmp input{accent-color:var(--brand)}

/* ---------- 筛选 ---------- */
.filters{background:#fff;border:1px solid var(--line);border-radius:4px;padding:18px 20px;margin-bottom:26px}
.frow{display:flex;gap:10px;align-items:flex-start;padding:7px 0;font-size:13.5px;flex-wrap:wrap}
.frow > label{color:var(--ink-3);width:64px;flex-shrink:0;line-height:28px;font-size:13px}
.chip{padding:5px 14px;border:1px solid var(--line);border-radius:2px;cursor:pointer;
  font-size:13px;color:var(--ink-2);background:#fff;line-height:20px;transition:.15s}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.chip.on{background:var(--brand);border-color:var(--brand);color:#fff}
.searchbar{display:flex;gap:10px;margin-bottom:20px}
/* 主搜索框：加粗品牌色边框 + 放大镜图标，一眼看出这是输入搜索的地方 */
.searchbar input{flex:1;border:2px solid var(--brand);border-radius:4px;
  padding:15px 18px 15px 50px;font-size:16px;outline:none;min-width:0;color:var(--ink);
  background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23202888' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='M20 20l-4-4'/%3E%3C/svg%3E") no-repeat 17px center;
  background-size:21px 21px;box-shadow:0 2px 10px rgba(32,40,136,.10)}
.searchbar input::placeholder{color:#727a94;opacity:1}
.searchbar input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(32,40,136,.15)}
.searchbar .btn{flex-shrink:0;padding-left:30px;padding-right:30px;font-size:16px}
@media (max-width:768px){
  .searchbar input{padding:13px 14px 13px 44px;font-size:15px;background-position:14px center;background-size:19px 19px}
  .searchbar .btn{padding-left:18px;padding-right:18px;font-size:15px}
}

/* ---------- 选型页：吸顶搜索条 ---------- */
/* 导航本身 sticky，--nav-h 由页面脚本按实测高度写入，避免不同屏宽错位 */
.search-page .sec-head{margin-bottom:14px}
.search-stick{position:sticky;top:var(--nav-h,56px);z-index:40;background:#fff;
  padding:10px 0 12px;margin-bottom:2px;
  border-bottom:1px solid transparent;
  scroll-margin-top:calc(var(--nav-h,56px) + 8px);
  transition:box-shadow .18s,border-color .18s}
.search-stick.is-stuck{border-bottom-color:var(--line);box-shadow:0 8px 18px rgba(16,24,70,.10)}
.search-stick .searchbar{margin-bottom:0}
.search-page .hot-row{margin:0 0 20px;padding:0;gap:8px}
.search-page .hot-row>label{width:auto;line-height:28px}
#q{scroll-margin-top:calc(var(--nav-h,56px) + 24px)}
@media (max-width:768px){
  .search-stick{padding:8px 0 10px}
  .search-page .hot-row{margin-bottom:14px}
}

/* ---------- 表格 ---------- */
.tbl{width:100%;border-collapse:collapse;font-size:14px;background:#fff}
.tbl th,.tbl td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.tbl th{background:#f6f7fb;font-weight:500;color:var(--ink-2);white-space:nowrap}
.tbl tr:hover td{background:#fbfbfd}
.tbl-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
.top-grid{display:grid;grid-template-columns:360px 1fr;gap:36px;align-items:start}
.flow .step{background:#fff;border:1px solid var(--line);border-radius:4px;padding:22px 18px;position:relative}
.flow .step::before{counter-increment:s;content:counter(s);position:absolute;top:-11px;left:16px;
  width:24px;height:24px;border-radius:2px;background:var(--brand);color:#fff;font-size:12px;
  display:flex;align-items:center;justify-content:center}
.flow .step b{display:block;font-size:14.5px;margin:8px 0 6px}
.flow .step span{font-size:12.5px;color:var(--ink-3);line-height:1.7}

/* ---------- 优势 ---------- */
.adv{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.adv .item{background:#fff;border:1px solid var(--line);border-radius:4px;padding:26px 22px}
.adv .item b{display:block;font-size:15px;margin-bottom:8px;letter-spacing:.2px}
.adv .item p{font-size:13px;color:var(--ink-2);line-height:1.8}
.adv .item .ic{width:36px;height:36px;border-radius:3px;background:var(--brand-lt);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;margin-bottom:16px}

/* ---------- 数据带 ---------- */
.stats{padding:0;background:#fff}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);padding:54px 32px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats .wrap > div{text-align:center;border-right:1px solid var(--line)}
.stats .wrap > div:last-child{border-right:0}
.stats b{display:block;font-size:40px;font-weight:600;letter-spacing:.5px;color:var(--brand);line-height:1.2}
.stats b i{font-style:normal;font-size:16px;color:var(--ink-3);margin-left:4px;font-weight:400}
.stats span{font-size:13.5px;color:var(--ink-2);letter-spacing:.3px}

/* ---------- 案例 ---------- */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case{background:#fff;border:1px solid var(--line);border-radius:4px;padding:28px 24px;display:flex;flex-direction:column}
.case .kind{font-size:11px;color:var(--brand);background:var(--brand-lt);border-radius:2px;padding:3px 9px;align-self:flex-start;letter-spacing:.5px}
.case h4{font-size:16.5px;font-weight:600;margin:14px 0 10px;line-height:1.55}
.case p{font-size:13.5px;color:var(--ink-2);line-height:1.85;flex:1}
.case .kpi{display:flex;gap:26px;border-top:1px solid var(--line);margin-top:20px;padding-top:16px}
.case .kpi div b{display:block;font-size:21px;color:var(--brand);font-weight:600}
.case .kpi div span{font-size:11.5px;color:var(--ink-3)}

/* ---------- 合作流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.steps .s{background:#fff;border:1px solid var(--line);border-radius:4px;padding:26px 22px}
.steps .s em{font-style:normal;font-size:11px;letter-spacing:2px;color:var(--brand);font-weight:600}
.steps .s b{display:block;font-size:16px;margin:10px 0 8px}
.steps .s span{font-size:13px;color:var(--ink-2);line-height:1.8}

/* ---------- 打样横幅 ---------- */
.offer{background:linear-gradient(100deg,#141a5e 0%,#202888 100%);color:#fff;border-radius:6px;
  padding:48px;display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center}
.offer h2{font-size:28px;font-weight:600;line-height:1.45;letter-spacing:.5px}
.offer h2 em{font-style:normal;color:#aab2f0}
.offer p{color:#c3c8e4;font-size:14.5px;margin-top:14px;line-height:1.9}
.offer ul{margin-top:20px;display:grid;grid-template-columns:1fr 1fr;gap:10px 22px}
.offer ul li{font-size:13.5px;color:#cfd3ee;padding-left:20px;position:relative}
.offer ul li::before{content:"—";position:absolute;left:0;color:#7d86d8}
.offer .box{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:4px;padding:26px;text-align:center}
.offer .box b{display:block;font-size:16px;margin-bottom:8px}
.offer .box span{font-size:12.5px;color:#b9bfe0;display:block;margin-bottom:18px;line-height:1.7}
.offer .box .btn{width:100%}

/* ---------- FAQ ---------- */
/* 顶部导航 sticky，锚点跳转需留出高度，避免标题被压在导航下面 */
html{scroll-padding-top:70px}
section[id],div[id]{scroll-margin-top:70px}
.faq{background:#fff;border:1px solid var(--line);border-radius:4px;overflow:hidden}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:0}
.faq summary{padding:20px 52px 20px 24px;cursor:pointer;font-size:15.5px;font-weight:500;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:24px;top:17px;color:var(--brand);font-size:20px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq summary:hover{color:var(--brand)}
.faq .a{padding:0 24px 22px;font-size:14px;color:var(--ink-2);line-height:1.9;max-width:900px}
.faq .a b{color:var(--ink)}

/* ---------- 客户 logo ---------- */
.clients{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.clients .cl{background:#fff;height:132px;display:flex;align-items:center;justify-content:center;padding:22px;
  filter:grayscale(1);opacity:.82;transition:.2s}
.clients .cl:hover{filter:grayscale(0);opacity:1}
.clients .cl img{max-height:82px;max-width:100%;object-fit:contain}

/* ---------- 图文并排 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split .txt h2{font-size:28px;font-weight:600;line-height:1.45;letter-spacing:.5px}
.split .txt p{color:var(--ink-2);margin-top:16px;font-size:15px;line-height:1.95}
.split .pic img{border-radius:4px;width:100%;display:block}
.split .pic .pic-cap{display:block;margin-top:10px;font-size:12.5px;color:var(--ink-3);line-height:1.6}
.split .facts{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}
.split .facts b{display:block;font-size:23px;color:var(--brand);font-weight:600}
.split .facts span{font-size:12.5px;color:var(--ink-3)}

/* ---------- 认证展示（首页质量文件区左侧） ---------- */
.certwall{align-self:stretch;display:grid;grid-template-columns:1fr 1fr;gap:16px;
  grid-template-rows:auto auto;align-content:center;padding:8px 0}
.certwall .cert{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:32px 16px 24px;text-align:center;overflow:hidden;
  display:flex;flex-direction:column;justify-content:center;
  box-shadow:0 2px 10px rgba(32,40,136,.05)}
.certwall .cert::before{content:"";position:absolute;left:0;right:0;top:0;height:5px;background:var(--brand)}
.certwall .cert::after{content:"";position:absolute;right:-46px;bottom:-46px;width:112px;height:112px;
  border:13px solid var(--brand-lt);border-radius:50%;pointer-events:none}
.certwall .cert-k{position:relative;display:block;font-size:11.5px;letter-spacing:2.6px;
  color:var(--brand);font-weight:700;opacity:.85}
.certwall .cert b{position:relative;display:block;font-size:36px;line-height:1.05;color:var(--brand-dk);
  font-weight:600;margin-top:10px;letter-spacing:.5px;white-space:nowrap}
.certwall .cert b span{font-size:15px;font-weight:500;color:var(--ink-3);margin-left:2px;letter-spacing:0}
.certwall .cert em{position:relative;display:block;font-style:normal;font-size:12px;color:var(--ink-2);
  margin-top:18px;line-height:1.45;padding-top:14px;border-top:1px solid var(--line)}
.certwall .cert-note{grid-column:1/-1;margin-top:16px;font-size:12.5px;color:var(--ink-3);
  line-height:1.7;text-align:center}

/* ---------- 图片墙 ---------- */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.gallery img{width:100%;height:200px;object-fit:cover;border-radius:3px}
.gallery .wide{grid-column:span 2}

/* ---------- 证书 ---------- */
.certs{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.certs .c{background:#fff;border:1px solid var(--line);border-radius:4px;padding:16px;text-align:center}
.certs .c img{height:230px;width:auto;margin:0 auto;object-fit:contain}
.certs .c b{display:block;font-size:13.5px;margin-top:12px}

/* ---------- CTA ---------- */
.cta{background:var(--brand-dk);color:#fff;padding:64px 0}
.cta .wrap{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta h2{font-size:28px;font-weight:600;letter-spacing:.5px}
.cta p{color:#b9bfe0;font-size:14.5px;margin-top:10px}

/* ---------- 页脚 ---------- */
.footer{background:#0b1030;color:#98a0bf;font-size:13.5px;padding:64px 0 0}
.footer .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px}
.footer h5{color:#fff;font-size:14px;font-weight:500;margin-bottom:16px;letter-spacing:.5px}
.footer li{margin-bottom:10px;line-height:1.7}
.footer a:hover{color:#fff}
.footer .bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;
  justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12px;color:#6b7396}
.footer .bottom a{color:#6b7396}
.footer .cert{display:flex;gap:8px;margin-top:18px;flex-wrap:wrap}
.footer .cert span{border:1px solid rgba(255,255,255,.18);border-radius:2px;padding:4px 10px;font-size:11px;color:#b9bfe0}

/* ---------- 表单 ---------- */
.form{background:#fff;border:1px solid var(--line);border-radius:4px;padding:30px}
.form .f{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form .f .full{grid-column:1/-1}
.form label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:7px}
.form input,.form select,.form textarea{width:100%;border:1px solid var(--line);border-radius:3px;
  padding:11px 13px;font-size:14px;font-family:inherit;outline:none;background:#fff}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--brand)}
.form .note{font-size:12px;color:var(--ink-3);margin-top:14px}

/* ---------- 联系卡 ---------- */
.contactcard{background:#fff;border:1px solid var(--line);border-radius:4px;padding:28px;text-align:center}
.contactcard .qr{width:130px;height:130px;margin:0 auto 16px;border:1px dashed var(--line);border-radius:3px;
  display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--ink-3);background:var(--bg);text-align:center;padding:8px}
.contactcard b{display:block;font-size:15px;margin-bottom:6px}
.contactcard p{font-size:12.5px;color:var(--ink-3);line-height:1.7}

/* ---------- 对比条 ---------- */
.cmpbar{position:sticky;bottom:0;background:var(--brand-dk);color:#fff;padding:14px 0;
  display:none;z-index:20;box-shadow:0 -4px 20px rgba(0,0,0,.18)}
.cmpbar.show{display:block}
.cmpbar .wrap{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.cmpbar .btn{padding:10px 20px;font-size:14px}

/* ---------- 面包屑 ---------- */
.crumb{font-size:15.5px;color:var(--ink-2);padding:20px 0;line-height:2}
.crumb a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;font-weight:500}
.crumb a:hover{color:#141a5e;text-decoration-thickness:2px}
.crumb .sep{color:#aeb4c8;margin:0 10px;font-size:17px;font-weight:600}
.crumb .cur{color:var(--ink);font-weight:600}
/* 详情页醒目返回按钮：优先退回刚才的选型结果，否则回该分类 */
.crumb .back{display:inline-flex;align-items:center;gap:6px;margin-right:20px;
  padding:9px 18px;border:1.5px solid var(--brand);border-radius:3px;background:#fff;
  color:var(--brand);font-size:15px;font-weight:600;text-decoration:none;vertical-align:middle;
  text-underline-offset:0}
.crumb .back:hover{background:var(--brand);color:#fff;text-decoration:none}
@media (max-width:768px){
  .crumb{font-size:14.5px;line-height:1.9}
  .crumb .sep{margin:0 6px;font-size:16px}
  .crumb .back{display:flex;width:fit-content;margin:0 0 12px}
}

/* ---------- 产品详情 ---------- */
.pd{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:start}
.pd>*{min-width:0}
.pd .pic{background:#f5f6fa;border:1px solid var(--line);border-radius:4px;padding:40px;
  min-width:0;overflow:hidden;display:flex;align-items:center;justify-content:center}
.pd .pic img{max-height:400px;max-width:100%;width:auto;height:auto;object-fit:contain;mix-blend-mode:multiply}
.pd h1{font-size:30px;font-weight:600;line-height:1.4;letter-spacing:.5px}
.pd .stds{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.pd .key{margin-top:24px;border-top:1px solid var(--line)}
.pd .key .r{display:grid;grid-template-columns:110px 1fr;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}
.pd .key .r span{color:var(--ink-3)}
.pd .key .r b{font-weight:500}
.pd .acts{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}
/* 别称说明：把客户口头叫法写在产品页正文，便于选型与搜索收录 */
.aka{margin-top:18px;padding:10px 14px;background:#f6f7fb;border-left:3px solid #c9cdf0;
  border-radius:2px;font-size:13.5px;color:var(--ink-2);line-height:1.9}
.aka b{color:var(--brand);font-weight:600;margin-right:4px}

/* ---------- 首屏尺寸速览（客户第一眼看到参数） ---------- */
.quickspec{margin-top:16px;border:1px solid var(--line);border-left:3px solid var(--brand);background:#fff;border-radius:3px;padding:12px 16px 10px}
.qs-t{display:flex;align-items:baseline;justify-content:space-between;gap:10px;font-size:14px;font-weight:600;margin-bottom:10px}
.qs-t span{font-size:11.5px;font-weight:400;color:var(--ink-3)}
.qs-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.qs{border-collapse:collapse;width:100%;font-size:12.5px;min-width:340px}
.qs th,.qs td{border:1px solid var(--line);padding:6px 9px;text-align:center;white-space:nowrap}
.qs th{background:var(--brand);color:#fff;font-weight:500}
.qs td:first-child{font-weight:600;color:var(--brand);background:#fafbfe}
.qs tbody tr:nth-child(even) td{background:#fafbfe}
.qs-more{display:inline-block;margin-top:9px;font-size:12.5px;color:var(--brand);text-decoration:none}
.qs-more:hover{text-decoration:underline}
.sp-lg{font-size:12.5px;color:var(--ink-2);background:#f6f7fb;border-left:3px solid var(--brand);
  padding:9px 12px;margin:0 0 12px;line-height:1.7}
.rawidx{margin-top:8px;border:1px solid var(--line);padding:12px 16px;font-size:13px;color:var(--ink-2);background:#fff}
.rawidx summary{cursor:pointer;font-weight:500;color:var(--ink-2)}
.rawidx .tbl-scroll{margin-top:14px}
@media (max-width:768px){
  .quickspec{padding:12px}
  .qs-t{flex-direction:column;gap:2px}
}

/* ---------- 手机底部 CTA ---------- */
.mcta{display:none}
@media (max-width:768px){
  .mcta{display:grid;grid-template-columns:1fr 1fr 1.2fr;position:fixed;left:0;right:0;bottom:0;z-index:80;
    background:#fff;border-top:1px solid var(--line);box-shadow:0 -2px 14px rgba(0,0,0,.1);
    padding-bottom:env(safe-area-inset-bottom)}
  .mcta a{padding:10px 4px;text-align:center;font-size:12px;line-height:1.35;color:var(--ink);
    border-right:1px solid var(--line)}
  .mcta a b{display:block;font-size:13px;font-weight:600}
  .mcta a.main{background:var(--brand);color:#fff;border-right:0}
  .mcta a.main b{color:#fff}
  body{padding-bottom:60px}
}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .hero .wrap{grid-template-columns:1fr;gap:40px;padding-top:60px;padding-bottom:60px}
  .hero h1{font-size:36px}
  .cat-grid,.prod-grid,.adv,.gallery{grid-template-columns:repeat(3,1fr)}
  .cases,.certs{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:32px}
  .footer .cols{grid-template-columns:1fr 1fr}
  .clients{grid-template-columns:repeat(4,1fr)}
  .pd{grid-template-columns:minmax(0,1fr);gap:32px}
  .trust .wrap{grid-template-columns:1fr 1fr}
  .trust .t:nth-child(2){border-right:0}
  .trust .t:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .flow{grid-template-columns:repeat(3,1fr)}
  .top-grid{grid-template-columns:1fr;gap:26px}
}
@media (max-width:768px){
  .wrap{padding:0 20px}
  .topbar .wrap{height:auto;padding:8px 0;flex-direction:column;gap:2px;font-size:12px}
  .topbar .hide-sm{display:none}
  .header .wrap{height:auto;padding:14px 0;flex-wrap:wrap;gap:12px}
  .logo-img{height:36px}
  .header-search{order:3;max-width:none;flex-basis:100%;margin-left:0}
  .header-tel{text-align:right}
  .header-tel b{font-size:18px}
  .nav a{padding:12px 11px;font-size:13.5px}
  .sec{padding:52px 0}
  .sec-head h2{font-size:23px}
  .hero h1{font-size:28px;letter-spacing:.3px}
  .hero p.lead{font-size:15px}
  .hero-facts{gap:26px}
  .hero-facts div b{font-size:21px}
  .cat-grid,.prod-grid,.adv,.cases,.steps,.certs,.gallery{grid-template-columns:1fr 1fr}
  .ways{grid-template-columns:1fr}
  .clients{grid-template-columns:1fr 1fr}
  .clients .cl{height:104px}
  .clients .cl img{max-height:62px}
  .stats .wrap{grid-template-columns:1fr 1fr;padding:36px 20px;gap:26px}
  .stats .wrap > div{border-right:0}
  .stats b{font-size:30px}
  .trust .t{padding:18px 14px;gap:10px;min-width:0}
  .trust .t>div{min-width:0}
  .trust .t .ic{width:30px;height:30px}
  .trust b{font-size:14px}
  .trust span{font-size:12px;overflow-wrap:anywhere}
  .flow{grid-template-columns:1fr 1fr}
  .offer{padding:28px;grid-template-columns:1fr;gap:26px}
  .offer ul{grid-template-columns:1fr}
  .offer h2{font-size:22px}
  .form .f{grid-template-columns:1fr}
  .footer .cols{grid-template-columns:1fr;gap:28px}
  .pcard .ph{height:140px}
  .cat .ph{aspect-ratio:auto;height:172px;padding:10px 14px}
  .pd .pic{padding:24px}
  .pd h1{font-size:23px}
}
@media (max-width:460px){
  .cat-grid,.prod-grid,.gallery{grid-template-columns:1fr}
  .certs,.cases,.steps,.adv{grid-template-columns:1fr}
  .cat .ph{height:238px;padding:12px 18px}
  /* 认证卡：手机端改单列横排，避免两列被压窄挤出边界 */
  .certwall{grid-template-columns:1fr;gap:10px}
  .certwall .cert{flex-direction:row;align-items:center;justify-content:flex-start;
    padding:20px 18px;text-align:left;gap:10px}
  .certwall .cert::after{display:none}
  .certwall .cert-k{margin:0}
  .certwall .cert b{font-size:25px;margin:0}
  .certwall .cert b span{font-size:13px}
  .certwall .cert em{margin:0 0 0 auto;padding:0 0 0 14px;border-top:0;
    border-left:1px solid var(--line);font-size:12px;text-align:left;line-height:1.4}
  .certwall .cert-note{margin-top:10px}
}

/* ---- 尺寸代号示意图（详情页 / 参数弹窗共用） ---- */
.dimfig{display:grid;grid-template-columns:340px 1fr;gap:28px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:4px;padding:22px 26px;margin-bottom:26px}
.df-pic{background:#f6f7fb;border:1px solid var(--line);border-radius:3px;padding:10px}
.df-pic img{display:block;width:auto;max-width:100%;max-height:190px;height:auto;
  object-fit:contain;margin:0 auto}
.df-txt h3{font-size:19px;font-weight:600;margin:6px 0 8px}
.df-txt p{font-size:13px;color:var(--ink-2);line-height:1.8;margin:0 0 10px}
.df-txt ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:7px 20px}
.df-txt li{font-size:13px;color:var(--ink-2);line-height:1.6}
.df-txt li b{color:var(--brand);font-weight:700;margin-right:6px;font-size:14px}
/* 详情页参数表：表头 + 规格首列冻结 */
#dims .tbl-scroll{overflow:auto;max-height:min(60vh,560px);position:relative;border:1px solid var(--line)}
#dims .tbl{border-collapse:separate;border-spacing:0}
#dims .tbl th,#dims .tbl td{border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
#dims .tbl th{position:sticky;top:0;z-index:3;background:#202888;color:#fff;
  box-shadow:0 2px 6px rgba(8,12,40,.18)}
#dims .tbl th:first-child{left:0;z-index:4}
#dims .tbl td:first-child{position:sticky;left:0;z-index:1;background:#fafbfe;
  font-weight:600;color:var(--brand);white-space:nowrap}
/* 参数表数值居中，读表更快 */
#dims .tbl th,#dims .tbl td{text-align:center}
/* 原始参数表是文字描述，保持左对齐 */
#dims .rawidx .tbl th,#dims .rawidx .tbl td{text-align:left}
#dims .rawidx .tbl-scroll{max-height:360px}
@media (max-width:768px){
  .dimfig{grid-template-columns:1fr;gap:16px;padding:16px}
  .df-txt ul{grid-template-columns:1fr}
  #dims .tbl-scroll{max-height:56vh}
}

/* ---- 页头醒目联系电话 ---- */
.header-tel{text-align:right;line-height:1.25}
.header-tel .tel-main{display:block;font-size:26px;font-weight:700;color:var(--brand);
  letter-spacing:.4px;white-space:nowrap;text-decoration:none}
.header-tel .tel-main:hover{text-decoration:underline}
.header-tel .tel-sub{display:block;font-size:11.5px;color:var(--ink-3);margin-top:3px}
.clients .cl.empty{background:#fff}
@media (max-width:768px){
  .header-tel .tel-main{font-size:20px}
  .header-tel .tel-sub{font-size:10px}
}

/* ---------- 15-85 成本结构 ---------- */
.costsplit{display:grid;grid-template-columns:1fr 1.06fr;gap:56px;align-items:center}
.costsplit h2{font-size:28px;font-weight:600;line-height:1.45;letter-spacing:.5px}
.cs-lead{color:var(--ink-2);margin-top:16px;font-size:15px;line-height:1.95}
.cs-bar{margin-top:26px;display:flex;height:52px;border-radius:5px;overflow:hidden;font-size:13.5px;font-weight:500}
.cs-bar span{display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.28}
.cs-bar b{font-size:15px;font-weight:600;letter-spacing:.3px}
.cs-bar em{font-size:11.5px;font-style:normal;opacity:.88;margin-top:1px}
.cs-bar .b1{flex:0 0 15%;background:var(--brand);color:#fff}
.cs-bar .b2{flex:1;background:#dde1f6;color:var(--brand-dk)}
.cs-note{margin-top:11px;font-size:12.5px;color:var(--ink-3);line-height:1.8}
.cs-cta{display:inline-block;margin-top:18px;font-size:14px;color:var(--brand);font-weight:500;border-bottom:1px solid transparent}
.cs-cta:hover{border-bottom-color:var(--brand)}
.cs-list{display:grid;grid-template-columns:1fr 1fr;gap:13px}
.cs-list li{background:#fff;border:1px solid var(--line);border-radius:6px;padding:15px 16px 14px}
.cs-list b{display:block;font-size:14.5px;font-weight:500;color:var(--ink);letter-spacing:.2px}
.cs-list span{display:block;font-size:13px;color:var(--ink-2);margin-top:5px;line-height:1.65}
.cs-list i{display:block;font-size:12.5px;color:var(--brand);font-style:normal;margin-top:9px;
  padding-top:9px;border-top:1px dashed var(--line)}
@media(max-width:1000px){
  .costsplit{grid-template-columns:1fr;gap:36px}
}
@media(max-width:600px){
  .costsplit h2{font-size:23px}
  .cs-bar{height:50px}
  .cs-bar b{font-size:13px}
  .cs-bar em{font-size:11px}
  .cs-bar .b1{flex:0 0 24%}
  .cs-list{grid-template-columns:1fr;gap:11px}
}

/* ---------- 案例卡 ---------- */
.casegrid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.casecard{display:block;background:#fff;border:1px solid var(--line);border-radius:8px;padding:26px 26px 22px;
  transition:border-color .18s,box-shadow .18s}
.casecard:hover{border-color:var(--brand-mid);box-shadow:0 3px 14px rgba(32,40,136,.08)}
.ctag{display:inline-block;font-size:12px;letter-spacing:.6px;color:var(--brand);background:var(--brand-lt);
  padding:4px 10px;border-radius:3px;margin-bottom:14px}
.casecard>b{display:block;font-size:17.5px;font-weight:600;line-height:1.55;color:var(--ink);letter-spacing:.2px}
.casecard ul{margin-top:16px;display:grid;gap:8px}
.casecard li{font-size:13.5px;color:var(--ink-2);line-height:1.7;padding-left:15px;position:relative}
.casecard li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;
  background:var(--brand-mid);opacity:.55}
.casecard i{display:inline-block;margin-top:18px;font-style:normal;font-size:13.5px;color:var(--brand);font-weight:500}
@media(max-width:820px){
  .casegrid{grid-template-columns:1fr;gap:16px}
  .casecard{padding:22px 20px 18px}
  .casecard>b{font-size:16px}
}

/* ---------- 案例页 ---------- */
.cblock{margin-bottom:28px}
.cblock h3{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:12px;letter-spacing:.3px}
.clist{display:grid;gap:10px;max-width:860px}
.clist li{font-size:14.5px;color:var(--ink-2);line-height:1.8;padding-left:18px;position:relative}
.clist li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;
  background:var(--brand-mid);opacity:.5}
.clist li b{color:var(--ink);font-weight:600}
.chead{font-size:17px;font-weight:600;margin:38px 0 14px;letter-spacing:.3px}
.ctake{max-width:860px;margin-top:20px;font-size:14px;color:var(--ink-2);line-height:1.95;
  background:var(--brand-lt);border-left:3px solid var(--brand);padding:16px 20px;border-radius:0 5px 5px 0}
.cq{max-width:860px;margin-top:26px;padding:22px 24px;background:#fff;border:1px solid var(--line);border-radius:8px}
.cq p{font-size:15px;color:var(--ink);line-height:1.85;margin:0}
table.tbl.cmp{width:100%}
table.tbl.cmp th:first-child,table.tbl.cmp td:first-child{text-align:left;white-space:nowrap;color:var(--ink);font-weight:500;width:24%}
table.tbl.cmp th:nth-child(2),table.tbl.cmp td:nth-child(2){width:38%}
table.tbl.cmp td:nth-child(2){color:var(--ink-3)}
table.tbl.cmp td b{color:var(--brand);font-weight:600}
@media(max-width:600px){
  .cblock h3{font-size:15px}
  .clist li{font-size:14px}
  .chead{font-size:16px;margin:28px 0 12px}
  .ctake{font-size:13.5px;padding:14px 16px}
  .cq{padding:18px 18px}
  .cq p{font-size:14px}
}

/* ---------- 知识栏目 ---------- */
.art{max-width:820px}
.art h2{font-size:21px;font-weight:600;margin:40px 0 14px;letter-spacing:.3px}
.art h2:first-child{margin-top:0}
.art h3{font-size:16.5px;font-weight:600;margin:26px 0 10px;color:var(--ink)}
.art p{font-size:15px;color:var(--ink-2);line-height:1.95;margin-bottom:15px}
.art ul,.art ol{margin:0 0 18px;padding-left:22px}
.art ul{list-style:disc}
.art ol{list-style:decimal}
.art li{font-size:15px;color:var(--ink-2);line-height:1.9;margin-bottom:9px}
.art b{color:var(--ink);font-weight:600}
.art .lead-in{font-size:15.5px;color:var(--ink);line-height:1.95;background:var(--brand-lt);
  border-left:3px solid var(--brand);padding:16px 20px;border-radius:0 5px 5px 0;margin-bottom:26px}
.art .tbl-scroll{margin:22px 0}
.art table.tbl{width:100%}
.art table.tbl th:first-child,.art table.tbl td:first-child{text-align:left}
.art table.tbl td b{color:var(--brand)}
.art-note{max-width:820px;margin-top:34px;padding:18px 22px;background:#fff;border:1px solid var(--line);
  border-radius:8px;font-size:13.5px;color:var(--ink-2);line-height:1.85}
.art-note b{display:block;color:var(--ink);margin-bottom:6px;font-size:14px}
.art-cta{max-width:820px;margin-top:26px;padding:26px 28px;background:var(--brand);border-radius:8px}
.art-cta b{display:block;font-size:17px;font-weight:600;margin-bottom:8px;color:#fff}
.art-cta p{font-size:14px;color:rgba(255,255,255,.86);margin-bottom:16px;line-height:1.85}
.art-cta a{display:inline-block;background:#fff;color:var(--brand);padding:10px 22px;border-radius:4px;
  font-size:14px;font-weight:500;margin:0 10px 8px 0}
.art-cta a.ghost{background:transparent;border:1px solid rgba(255,255,255,.45);color:#fff}
.art-meta{font-size:13px;color:var(--ink-3);margin-top:14px}

.klist{display:grid;gap:16px;max-width:900px}
.kcard{display:block;background:#fff;border:1px solid var(--line);border-radius:8px;padding:24px 26px;
  transition:border-color .18s,box-shadow .18s}
.kcard:hover{border-color:var(--brand-mid);box-shadow:0 3px 14px rgba(32,40,136,.08)}
.kcard .ktag{font-size:12px;color:var(--brand);background:var(--brand-lt);padding:3px 9px;
  border-radius:3px;display:inline-block;margin-bottom:10px}
.kcard>b{display:block;font-size:17px;font-weight:600;color:var(--ink);line-height:1.5}
.kcard span{display:block;font-size:13.5px;color:var(--ink-2);margin-top:8px;line-height:1.75}
.kcard i{display:inline-block;margin-top:12px;font-style:normal;font-size:13px;color:var(--brand)}
@media(max-width:600px){
  .art h2{font-size:19px;margin:32px 0 12px}
  .art p,.art li{font-size:14.5px}
  .art-cta{padding:22px 20px}
  .kcard{padding:20px 18px}
  .kcard>b{font-size:16px}
}