:root{
  --navy:#0B1A2E; --steel:#1E3A5F; --red:#B92028;
  --ink:#16202f; --muted:#5B6779; --faint:#8B98A8;
  --line:#E6EBF2; --bg:#F7F9FC; --white:#fff;
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  color:var(--ink); background:var(--white);
  font-size:16px; line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-head .wrap{display:flex;align-items:center;gap:40px;height:68px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:44px;width:auto}
.brand .bt{line-height:1.15}
.brand .bt b{display:block;font-size:15px;letter-spacing:.06em;color:var(--navy)}
.brand .bt span{font-size:11px;color:var(--muted);letter-spacing:.14em}
.main-nav{display:flex;gap:28px;margin-left:auto}
.main-nav a{font-size:14px;color:var(--ink);padding:6px 0;border-bottom:2px solid transparent}
.main-nav a:hover{color:var(--red);border-color:var(--red)}
.head-cta{display:flex;align-items:center;gap:16px}
.lang{font-size:13px;color:var(--muted);letter-spacing:.1em}
.lang:hover{color:var(--red)}
.btn{
  display:inline-block;font-size:14px;padding:10px 22px;border-radius:6px;
  border:1px solid var(--red);color:var(--red);transition:.15s;
}
.btn:hover{background:var(--red);color:#fff}
.btn-solid{background:var(--red);color:#fff}
.btn-solid:hover{background:#99301f;border-color:#99301f}
.nav-toggle{display:none;background:none;border:0;font-size:22px;color:var(--navy);cursor:pointer;margin-left:auto}

/* ---------- hero ---------- */
.hero{background:var(--navy);color:#fff;overflow:hidden;position:relative}
.hero .wrap{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:48px;align-items:center;padding-top:96px;padding-bottom:96px;
}
.kicker{
  font-size:12px;letter-spacing:.3em;color:#9FB3C8;
  text-transform:uppercase;margin-bottom:22px;display:flex;align-items:center;gap:12px;
}
.kicker::before{content:"";width:34px;height:2px;background:var(--red)}
.hero h1{
  font-size:clamp(28px,3.6vw,42px);line-height:1.3;font-weight:600;letter-spacing:.01em;
}
.hero h1 em{font-style:normal;color:#fff;border-bottom:3px solid var(--red)}
.hero h1 .h1-sub{
  display:block;font-size:.44em;font-weight:400;letter-spacing:.14em;
  margin-top:24px;color:rgba(255,255,255,.82);
}
/* 主标语分行对齐：第 1 行行尾「+」与「更」同行；第 2 行与第 1 行「让」字对齐 */
.hero h1 .h1-l1,.hero h1 .h1-l2{display:block}
.hero h1 .h1-l2{white-space:nowrap}
.hero h1 .h1-pad{visibility:hidden;font-style:normal}
.hero h1 em.p{border-bottom:0;color:var(--red)}
@media (max-width:600px){
  .hero h1 .h1-l2{white-space:normal}
  .hero h1 .h1-pad{display:none}
}
.hero h1.h1-en{font-size:clamp(24px,2.9vw,36px);line-height:1.35}
.hero p.lead{
  margin-top:24px;font-size:17px;color:#C3CFDC;max-width:34em;line-height:1.9;
}
.hero-actions{margin-top:38px;display:flex;gap:16px;flex-wrap:wrap}
.hero .btn{border-color:#fff;color:#fff;padding:12px 26px}
.hero .btn-solid{border-color:var(--red)}
.hero .btn:hover{background:#fff;color:var(--navy)}
.hero .btn-solid:hover{background:var(--red);color:#fff}
.hero-art{position:relative}
.hero-art svg{width:100%;height:auto;display:block}
.hero-note{
  position:absolute;right:0;bottom:-8px;font-size:12px;color:#8DA2B8;
  border-top:1px solid rgba(255,255,255,.18);padding-top:10px;text-align:right;
}

/* ---------- sections ---------- */
section{padding:88px 0}
.sec-head{max-width:720px;margin-bottom:52px}
.sec-head .k{font-size:12px;letter-spacing:.26em;color:var(--red);text-transform:uppercase;margin-bottom:14px;display:block}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:600;line-height:1.35}
.sec-head p{margin-top:14px;color:var(--muted);font-size:15.5px}

/* business */
.biz{background:var(--white)}
.biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.biz-item{background:#fff;padding:36px 28px;min-height:290px;display:flex;flex-direction:column}
.biz-item .no{font-size:13px;color:var(--red);letter-spacing:.18em;margin-bottom:18px}
.biz-item h3{font-size:19px;font-weight:600;margin-bottom:12px}
.biz-item p{font-size:14px;color:var(--muted);line-height:1.8}
.biz-item .more{margin-top:auto;padding-top:18px;font-size:13px;color:var(--steel)}
.biz-item:hover .more{color:var(--red)}

/* metrics */
.metrics{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:64px 0}
.metrics .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.metric b{display:block;font-size:34px;font-weight:600;color:var(--navy);line-height:1.1}
.metric b i{font-style:normal;color:var(--red)}
.metric span{display:block;margin-top:8px;font-size:13.5px;color:var(--muted)}

/* why */
.why .wrap{display:grid;grid-template-columns:.9fr 1.6fr;gap:64px;align-items:start}
.why-grid{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.why-item{background:#fff;padding:34px 30px;display:flex;gap:22px}
.why-item .n{
  flex:0 0 44px;height:44px;border:1px solid var(--line);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;color:var(--red);
}
.why-item h3{font-size:17px;font-weight:600;margin-bottom:8px}
.why-item h3 .q{display:block;margin-top:6px;font-size:14px;font-weight:400;color:var(--red);line-height:1.6}
.why-item p{font-size:14px;color:var(--muted);line-height:1.85}

/* insights */
.insights{background:var(--bg);border-top:1px solid var(--line)}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post{
  background:#fff;border:1px solid var(--line);border-radius:8px;padding:30px 28px;
  display:flex;flex-direction:column;min-height:230px;transition:.15s;
}
.post:hover{border-color:var(--steel)}
.post .date{font-size:12px;color:var(--faint);letter-spacing:.08em;margin-bottom:14px}
.post h3{font-size:16.5px;font-weight:600;line-height:1.5;margin-bottom:10px}
.post p{font-size:13.5px;color:var(--muted);line-height:1.8}
.post .tag{margin-top:auto;padding-top:16px;font-size:12px;color:var(--red);letter-spacing:.12em}

/* cta band */
.cta-band{background:var(--navy);color:#fff}
.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);font-weight:600;line-height:1.4}
.cta-band p{margin-top:8px;color:#C3CFDC;font-size:15px}
.cta-band p a{color:#fff;border-bottom:1px solid var(--red)}
.cta-band .actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-band .btn{border-color:#fff;color:#fff}
.cta-band .btn-solid{border-color:var(--red)}
.cta-band .btn:hover{background:#fff;color:var(--navy)}
.cta-band .btn-solid:hover{background:var(--red);color:#fff}

/* footer */
.site-foot{background:#081320;color:#9FB3C8;font-size:13.5px}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding:64px 0 48px}
.foot-brand{display:flex;gap:16px;align-items:flex-start}
.foot-brand img{width:62px;height:62px;flex:none;border-radius:15px;box-shadow:0 3px 14px rgba(0,0,0,.25)}
.foot-brand .bt b{display:block;color:#fff;font-size:16px;letter-spacing:.06em}
.foot-brand .bt span{font-size:12px;letter-spacing:.12em}
.foot-brand p{margin-top:14px;font-size:13px;line-height:1.8;max-width:26em}
.foot-col h4{color:#fff;font-size:13px;letter-spacing:.2em;margin-bottom:18px;font-weight:500}
.foot-col li{margin-bottom:10px}
.foot-col a:hover{color:#fff}
.foot-bar{
  border-top:1px solid rgba(255,255,255,.12);padding:18px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#6E8199;
}
.foot-bar a{color:#8DA2B8}
.foot-bar a:hover{color:#fff}
.foot-bar .legal{display:flex;align-items:center;gap:8px 16px;flex-wrap:wrap}
.foot-bar .legal .police{display:inline-flex;align-items:center;gap:6px}
.foot-bar .legal .police img{width:16px;height:16px;display:block}

/* responsive */
@media (max-width:960px){
  .hero .wrap{grid-template-columns:1fr;padding-top:64px;padding-bottom:64px}
  .hero-art{max-width:520px}
  .biz-grid{grid-template-columns:1fr 1fr}
  .metrics .wrap{grid-template-columns:1fr 1fr;gap:28px}
  .why .wrap{grid-template-columns:1fr;gap:40px}
  .post-grid{grid-template-columns:1fr}
  .foot-top{grid-template-columns:1fr;gap:36px}
  .main-nav{
    display:none;position:absolute;top:68px;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;gap:0;padding:8px 32px 16px;
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-toggle{display:block}
  .head-cta .btn{display:none}
}
@media (max-width:560px){
  .wrap{padding:0 20px}
  .biz-grid{grid-template-columns:1fr}
  .metrics .wrap{grid-template-columns:1fr 1fr}
  section{padding:64px 0}
}

/* 三列业务网格（三大增长引擎） */
.biz-grid.cols-3{grid-template-columns:repeat(3,1fr)}
@media (max-width:900px){.biz-grid.cols-3{grid-template-columns:1fr}}

/* 双列业务网格（联系页） */
.biz-grid.cols-2{grid-template-columns:repeat(2,1fr)}
@media (max-width:900px){.biz-grid.cols-2{grid-template-columns:1fr}}

/* 资源详情弹层（详情闸口） */
.modal-mask{position:fixed;inset:0;background:rgba(11,26,46,.62);display:none;align-items:center;justify-content:center;z-index:80;padding:20px}
.modal-mask.open{display:flex}
.modal{background:#fff;max-width:440px;width:100%;border-top:4px solid var(--red);padding:34px 32px 28px;position:relative;max-height:90vh;overflow:auto}
.modal h3{font-size:19px;color:var(--navy);margin:0 0 10px}
.modal p{font-size:14px;color:var(--muted);line-height:1.7;margin:0 0 18px}
.modal .qr-box{display:flex;flex-direction:column;align-items:stretch;gap:12px;background:var(--bg);border:1px solid var(--line);padding:14px}
.modal .qr-box img{width:100%;height:auto;flex:none;background:#fff;border-radius:6px}
.modal .qr-box .qt{font-size:13px;color:var(--navy);line-height:1.7;text-align:center}
.modal .qr-box .qt b{color:var(--red)}
.modal .m-actions{margin-top:18px;display:flex;gap:12px;flex-wrap:wrap}
.modal .m-close{position:absolute;top:10px;right:16px;font-size:22px;color:var(--muted);cursor:pointer;line-height:1;border:none;background:none}
.page-head{background:var(--navy);color:#fff;padding:72px 0 56px}
.page-head.has-bg{position:relative;overflow:hidden}
.page-head.has-bg::before{
  content:"";position:absolute;inset:0;
  background-size:cover;background-position:center 42%;
  opacity:.95;filter:saturate(.95) brightness(1.04) blur(.6px);
}
.page-head.has-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(102deg,
    rgba(11,26,46,.88) 0%, rgba(11,26,46,.76) 36%,
    rgba(11,26,46,.46) 68%, rgba(11,26,46,.22) 100%);
}
.page-head.has-bg p{color:rgba(255,255,255,.92)}
.page-head.has-bg .wrap{position:relative;z-index:2}
.page-head.bg-inventory::before{background-image:url("../img/bg_inventory.jpg")}
.page-head.bg-contact::before{background-image:url("../img/bg_contact.jpg")}
.page-head.bg-material::before{background-image:url("../img/bg_material.jpg")}
.page-head .k{color:rgba(255,255,255,.55)}
.page-head h1{font-size:34px;font-weight:600;margin:8px 0 12px}
.page-head p{max-width:760px;color:rgba(255,255,255,.75);font-size:15px;line-height:1.8;margin:0}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0 0}
.chip{font-size:12.5px;padding:6px 14px;border:1px solid rgba(255,255,255,.3);color:rgba(255,255,255,.85);border-radius:999px}
.note-strip{background:var(--bg);border:1px solid var(--line);padding:14px 18px;font-size:13px;color:var(--muted);line-height:1.7;margin:28px 0 0}

/* ---------- survey ---------- */
.survey{padding:64px 0 96px}
.survey-meta{margin-top:14px !important;font-size:13.5px !important;color:rgba(255,255,255,.6) !important}
.sv-group{border:1px solid var(--line);border-radius:10px;padding:26px 28px 28px;margin:0 0 22px;background:var(--white)}
.sv-group legend{
  display:flex;align-items:center;gap:12px;font-size:17px;font-weight:600;color:var(--navy);
  padding:0 10px;margin-left:-6px;
}
.sv-group legend i{
  font-style:normal;font-size:11.5px;font-weight:500;color:var(--muted);
  background:var(--bg);border:1px solid var(--line);border-radius:4px;padding:2px 8px;margin-left:6px;
}
.sv-n{
  width:26px;height:26px;flex:none;border-radius:6px;background:var(--red);color:#fff;
  font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center;
}
.sv-hint{font-size:13.5px;color:var(--faint);margin:-2px 0 18px;line-height:1.7}
.sv-row{margin:0 0 18px}
.sv-row:last-child{margin-bottom:0}
.sv-label{display:block;font-size:14px;font-weight:600;color:var(--navy);margin:0 0 8px}
.sv-label i{font-style:normal;color:var(--red);font-size:12px;margin-left:6px}
.survey input[type=text],.survey input[type=email],.survey input[type=tel],.survey select,.survey textarea{
  width:100%;border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-size:14.5px;
  font-family:inherit;color:var(--ink);background:var(--white);transition:border-color .15s,box-shadow .15s;
}
.survey textarea{resize:vertical;line-height:1.7}
.survey select{max-width:420px}
.survey input:focus,.survey select:focus,.survey textarea:focus{
  outline:none;border-color:var(--steel);box-shadow:0 0 0 3px rgba(30,58,95,.08)}
.sv-opts{display:flex;flex-wrap:wrap;gap:10px 22px}
.sv-opts label{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--ink);cursor:pointer}
.sv-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px 20px}
.sv-opts input,.sv-sub input,.sv-consent input{
  width:16px;height:16px;flex:none;accent-color:var(--red);cursor:pointer}
.sv-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:6px}
.sv-col{border:1px solid var(--line);border-radius:8px;padding:16px 16px 14px;background:var(--bg)}
.sv-cat{font-size:14.5px;font-weight:600;color:var(--navy);display:flex;align-items:center;gap:9px;cursor:pointer;line-height:1.5}
.sv-cat em{font-style:normal;font-size:12.5px;font-weight:500;color:var(--muted)}
.sv-sub{margin:12px 0 0;padding:10px 0 0 2px;border-top:1px dashed var(--line);opacity:.45;transition:opacity .18s}
.sv-sub.active{opacity:1}
.sv-sub label{display:block;font-size:13.5px;color:var(--muted);padding:4px 0;display:flex;align-items:center;gap:8px;cursor:pointer}
.sv-sub.active label{color:var(--ink)}
.sv-two{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.sv-consent{display:flex;gap:10px;align-items:flex-start;margin-top:20px;font-size:13.5px;color:var(--muted);line-height:1.7}
.sv-actions{margin-top:28px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.sv-actions .btn{border:none;cursor:pointer;font:inherit;font-size:15px;padding:12px 30px}
.sv-status{font-size:13.5px;color:var(--muted)}
.sv-status.is-error{color:var(--red)}
.sv-status a{color:var(--red);text-decoration:underline}
.sv-tip{display:block;color:var(--faint);font-size:12.5px;margin-top:4px}
.sv-privacy{margin-top:18px;font-size:12.5px;color:var(--faint);line-height:1.7}
.sv-thanks{border:1px solid var(--line);border-radius:10px;padding:52px 40px;text-align:center;background:var(--bg)}
.sv-thanks h2{font-size:24px;font-weight:600;color:var(--navy);margin:0 0 12px}
.sv-thanks p{color:var(--muted);font-size:15px;line-height:1.8;margin:0}
.sv-thanks-actions{margin-top:24px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
@media (max-width:900px){
  .sv-cols{grid-template-columns:1fr}
  .sv-grid3{grid-template-columns:1fr 1fr}
  .sv-two{grid-template-columns:1fr}
  .survey{padding:44px 0 64px}
  .sv-group{padding:20px 18px 22px}
}
@media (max-width:560px){
  .sv-grid3{grid-template-columns:1fr}
}

/* ---------- why 栏目内的问卷入口 ---------- */
.survey-band{
  margin-top:44px;padding:28px 32px;border:1px solid var(--line);border-radius:12px;
  background:linear-gradient(180deg,#FCFDFF 0%,#F5F8FD 100%);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.survey-band .k{font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--red);display:block;margin-bottom:10px}
.survey-band h3{font-size:20px;font-weight:600;color:var(--navy);line-height:1.45;margin:0 0 8px}
.survey-band p{max-width:640px;font-size:14.5px;color:var(--muted);line-height:1.75;margin:0}
.sb-actions{display:flex;flex-direction:column;align-items:flex-start;gap:10px;flex:none}
.sb-actions .btn{padding:12px 26px}
.sb-note{font-size:12.5px;color:var(--faint)}
@media (max-width:900px){
  .survey-band{padding:22px 20px;gap:20px}
  .sb-actions{width:100%}
}

/* 领域卡片标题：副标题单独成行，避免英文换行挤压 */
.sv-cat{flex-wrap:wrap;align-items:flex-start}
.sv-cat input{margin-top:3px}
.sv-cat em{flex-basis:100%;padding-left:25px;line-height:1.5;margin-top:2px}

/* 问卷入口条跨满 why 两列（.why .wrap 是 grid） */
.why .survey-band{grid-column:1 / -1}

/* ---------- why-strip：二级页 banner 内的「为什么选我们」引导条 ---------- */
.why-strip{
  margin:30px 0 0;padding:18px 22px;border:1px solid rgba(255,255,255,.22);
  border-radius:10px;background:rgba(9,21,38,.66);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  box-shadow:0 10px 28px rgba(3,10,20,.22);
  display:flex;align-items:center;gap:26px;flex-wrap:wrap;
}
.why-strip .ws-k{
  flex:none;font-size:12px;font-weight:600;letter-spacing:.18em;color:#fff;
  padding-right:24px;border-right:1px solid rgba(255,255,255,.2);
}
.why-strip .ws-points{
  list-style:none;margin:0;padding:0;flex:1;min-width:0;
  display:flex;gap:30px;flex-wrap:wrap;
}
.why-strip .ws-points li{font-size:12.8px;color:rgba(255,255,255,.78);line-height:1.65}
.why-strip .ws-points b{display:block;color:#fff;font-size:13.5px;font-weight:600;margin-bottom:3px}
.why-strip .ws-link{
  flex:none;font-size:13px;color:#fff;white-space:nowrap;
  border-bottom:1px solid rgba(255,255,255,.45);padding-bottom:2px;
}
.why-strip .ws-link:hover{border-color:#fff}
@media (max-width:900px){
  .why-strip{padding:16px 18px;gap:14px}
  .why-strip .ws-k{
    flex-basis:100%;border-right:none;padding:0 0 10px;
    border-bottom:1px solid rgba(255,255,255,.14);
  }
  .why-strip .ws-points{flex-direction:column;gap:14px}
}

/* ---------- platform entry (official mini-program QR) ---------- */
.plat-entry{
  display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);
  gap:34px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:26px 30px;margin:34px 0 30px;
}
.plat-entry .pe-media img{width:100%;max-width:580px;height:auto;margin:0 auto;border-radius:6px}
.plat-entry .pe-body .k{
  display:block;font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--steel);font-weight:600;margin-bottom:8px;
}
.plat-entry .pe-body h3{font-size:19px;font-weight:600;color:var(--navy);line-height:1.45;margin:0 0 10px}
.plat-entry .pe-body p{font-size:13.5px;color:var(--muted);line-height:1.75;margin:0 0 16px}
@media(max-width:860px){
  .plat-entry{grid-template-columns:1fr;gap:18px;padding:22px 20px;margin:26px 0 22px}
}