:root{
  --brand:#1557d5;
  --brand2:#2f80ed;
  --deep:#0b1730;
  --ink:#142033;
  --text:#445066;
  --muted:#6c788d;
  --line:#e3e8f0;
  --bg:#f6f8fb;
  --white:#fff;
  --soft:#edf4ff;
  --accent:#f26b38;
  --green:#169b6b;
  --max:1240px;
  --radius:18px;
  --shadow:0 16px 40px rgba(19,41,79,.08)
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.78}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{width:min(var(--max),calc(100% - 40px));margin:auto}
.topbar{background:var(--deep);color:#b9c6da;font-size:12px}
.topbar .container{display:flex;justify-content:space-between;gap:24px;padding:7px 0}
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-row{height:78px;display:flex;align-items:center;gap:36px}
.logo{display:flex;align-items:center;gap:11px;font-size:22px;font-weight:900;color:var(--ink)}
.logo-mark{width:39px;height:39px;border-radius:12px;background:linear-gradient(135deg,var(--brand),#46a3ff);position:relative;box-shadow:0 8px 20px rgba(21,87,213,.2)}
.logo-mark:after{content:"";position:absolute;left:15px;top:10px;border-left:14px solid #fff;border-top:9px solid transparent;border-bottom:9px solid transparent}
.nav{margin-left:auto;display:flex;gap:30px}
.nav a{padding:27px 0;font-size:14px;font-weight:800;color:#526079;position:relative}
.nav a:hover,.nav a.active{color:var(--brand)}
.nav a.active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--brand);border-radius:3px 3px 0 0}
.menu-btn{display:none;margin-left:auto;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 12px}

.hero{background:
 radial-gradient(circle at 88% 18%,rgba(47,128,237,.18),transparent 30%),
 linear-gradient(180deg,#fff,#eef5ff);
 padding:72px 0 90px}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center}
.eyebrow{font-size:12px;font-weight:900;letter-spacing:.15em;text-transform:uppercase;color:var(--brand)}
.hero h1{font-size:55px;line-height:1.14;letter-spacing:-.035em;color:var(--ink);margin:14px 0 20px}
.hero p{font-size:18px;color:#56647a;max-width:720px;margin:0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 22px;border-radius:11px;font-size:14px;font-weight:900}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px rgba(21,87,213,.2)}
.btn-outline{background:#fff;border:1px solid #cfd8e5;color:var(--ink)}
.trust-row{display:flex;gap:20px;flex-wrap:wrap;margin-top:25px;font-size:13px;color:#68758a}
.trust-row span:before{content:"✓";margin-right:6px;color:var(--green);font-weight:900}
.hero-media{position:relative;min-height:500px}
.hero-media .main{position:absolute;left:0;top:20px;width:78%;height:390px;border-radius:24px;overflow:hidden;border:6px solid #fff;box-shadow:0 24px 60px rgba(23,47,86,.16)}
.hero-media .sub{position:absolute;right:0;bottom:5px;width:50%;height:230px;border-radius:22px;overflow:hidden;border:6px solid #fff;box-shadow:0 22px 50px rgba(23,47,86,.14)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-note{position:absolute;right:5%;top:0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:17px 19px;box-shadow:var(--shadow);z-index:3;max-width:210px}
.hero-note strong{display:block;color:var(--ink);font-size:17px}
.hero-note span{font-size:12px;color:var(--muted)}

.section{padding:76px 0}
.section-white{background:#fff}
.section-deep{background:var(--deep);color:#fff}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:34px;margin-bottom:32px}
.section-head h2{font-size:34px;line-height:1.25;color:var(--ink);margin:8px 0 0}
.section-head p{max-width:780px;margin:9px 0 0;color:var(--muted)}
.section-deep .section-head h2{color:#fff}
.section-deep .section-head p{color:#adbad0}
.more{font-size:14px;font-weight:900;color:var(--brand)}

.intro-band{margin-top:-38px;position:relative;z-index:4}
.intro-grid{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
.intro-item{padding:24px;border-right:1px solid var(--line)}
.intro-item:last-child{border-right:0}
.intro-item strong{display:block;color:var(--ink);font-size:18px;margin-bottom:7px}
.intro-item p{font-size:13px;color:var(--muted);margin:0}

.about-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:58px;align-items:center}
.about-image{position:relative}
.about-image>img{width:100%;height:540px;object-fit:cover;border-radius:24px}
.about-card{position:absolute;right:-18px;bottom:28px;width:255px;background:var(--deep);color:#fff;border-radius:17px;padding:22px;box-shadow:var(--shadow)}
.about-card strong{display:block;font-size:20px;margin-bottom:5px}
.about-card p{font-size:12px;color:#b8c5d8;margin:0}
.about-copy h2{font-size:38px;line-height:1.25;color:var(--ink);margin:10px 0 18px}
.about-copy p{margin:0 0 15px}
.points{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}
.point{border:1px solid #dce5f2;background:#f8fbff;border-radius:12px;padding:13px 14px;font-size:13px;font-weight:800;color:#3f4b60}
.point:before{content:"✓";color:var(--green);margin-right:7px}

.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.adv{background:#fff;border:1px solid var(--line);border-radius:18px;padding:27px;box-shadow:var(--shadow)}
.adv-icon{width:48px;height:48px;border-radius:13px;background:#eaf2ff;color:var(--brand);display:grid;place-items:center;font-weight:900;font-size:18px}
.adv:nth-child(2) .adv-icon{background:#fff1eb;color:var(--accent)}
.adv:nth-child(3) .adv-icon{background:#eaf8f3;color:var(--green)}
.adv h3{font-size:20px;color:var(--ink);margin:16px 0 9px}
.adv p{font-size:14px;color:var(--muted);margin:0}

.service-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;grid-template-rows:1fr 1fr;gap:19px}
.service-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:27px;min-height:225px}
.service-card.main{grid-row:1/3;background:linear-gradient(150deg,#1249b7,#1f79ec);color:#fff;min-height:470px}
.service-card .no{font-size:38px;font-weight:900;color:rgba(21,87,213,.15)}
.service-card.main .no{color:rgba(255,255,255,.24)}
.service-card h3{font-size:21px;margin:12px 0;color:var(--ink)}
.service-card.main h3{color:#fff;font-size:27px}
.service-card p{font-size:14px;color:var(--muted)}
.service-card.main p{color:#dce9ff}
.service-card ul{padding-left:19px;font-size:13px;color:#58657a}
.service-card.main ul{color:#dce9ff}

.cap-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.cap-copy h2{font-size:38px;line-height:1.25;color:var(--ink);margin:10px 0 17px}
.cap-copy>p{color:var(--muted)}
.cap-list{display:grid;gap:18px;margin-top:24px}
.cap-row{display:grid;grid-template-columns:52px 1fr;gap:15px}
.cap-num{width:52px;height:52px;border-radius:14px;background:#fff;border:1px solid var(--line);display:grid;place-items:center;font-weight:900;color:var(--brand)}
.cap-row h3{font-size:18px;color:var(--ink);margin:0 0 5px}
.cap-row p{font-size:14px;color:var(--muted);margin:0}
.cap-panel{background:var(--deep);color:#fff;border-radius:22px;padding:34px}
.cap-panel h3{font-size:25px;margin:0 0 9px}
.cap-panel>p{color:#b9c6da;margin-bottom:22px}
.cap-item{padding:18px 0;border-top:1px solid rgba(255,255,255,.12)}
.cap-item strong{display:block;margin-bottom:5px}
.cap-item p{font-size:13px;color:#b9c6da;margin:0}

.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow)}
.review-tag{display:inline-flex;background:#edf4ff;color:var(--brand);font-size:12px;font-weight:900;padding:5px 9px;border-radius:999px}
.review-card h3{font-size:19px;color:var(--ink);margin:15px 0 8px}
.review-card p{font-size:14px;color:#59667a;margin:0}
.review-note{border-top:1px solid var(--line);margin-top:18px;padding-top:14px;font-size:12px;color:#8590a2}

.faq-grid{display:grid;grid-template-columns:.76fr 1.24fr;gap:48px}
.faq-intro h2{font-size:38px;line-height:1.25;color:var(--ink);margin:10px 0 14px}
.faq-intro p{color:var(--muted)}
.faq-list{display:grid;gap:11px}
details{background:#fff;border:1px solid var(--line);border-radius:13px;padding:0 18px}
summary{cursor:pointer;list-style:none;padding:17px 0;font-weight:900;color:var(--ink)}
summary::-webkit-details-marker{display:none}
details p{font-size:14px;color:var(--muted);margin:0 0 17px}

.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.news-card img{width:100%;height:215px;object-fit:cover}
.news-body{padding:20px}
.badge{display:inline-flex;padding:4px 9px;border-radius:999px;background:#eaf2ff;color:var(--brand);font-size:11px;font-weight:900}
.news-card h3{font-size:18px;line-height:1.5;color:var(--ink);margin:10px 0 8px}
.news-card p{font-size:13px;color:var(--muted);margin:0}
.news-meta{font-size:12px;color:#8a95a7;margin-top:13px}

.platform{background:linear-gradient(135deg,#0d1e3a,#123c73);border-radius:24px;padding:44px;color:#fff;display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center}
.platform h2{font-size:34px;line-height:1.28;margin:8px 0}
.platform p{color:#c0cee2}
.platform-links{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.platform-link{padding:17px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.07);border-radius:13px}
.platform-link strong{display:block}
.platform-link span{display:block;font-size:12px;color:#b9c7db;margin-top:4px}

.page-hero{background:linear-gradient(180deg,#fff,#edf4ff);padding:62px 0}
.breadcrumb{font-size:12px;color:#8190a7;margin-bottom:14px}
.page-hero h1{font-size:43px;line-height:1.24;color:var(--ink);letter-spacing:-.025em;margin:0 0 14px}
.page-hero p{font-size:17px;color:#5e6b80;max-width:900px;margin:0}

.content-layout{display:grid;grid-template-columns:1fr 320px;gap:38px}
.content-box{background:#fff;border:1px solid var(--line);border-radius:18px;padding:36px}
.content-box h2{font-size:27px;color:var(--ink);margin:34px 0 12px}
.content-box h2:first-child{margin-top:0}
.content-box h3{font-size:19px;color:var(--ink)}
.content-box p,.content-box li{color:#526077}
.content-box .lead{font-size:18px;line-height:1.95;color:#364257}
.side-box{height:max-content;background:var(--deep);color:#fff;border-radius:18px;padding:25px;position:sticky;top:100px}
.side-box h2{font-size:20px;margin:0 0 10px}
.side-box p,.side-box li{font-size:13px;color:#bdc9db}
.side-box ul{padding-left:18px}

.app-grid{display:grid;grid-template-columns:1fr .85fr;gap:52px;align-items:center}
.phone{width:300px;height:560px;margin:auto;border:10px solid #0a1322;border-radius:42px;background:#fff;overflow:hidden;box-shadow:0 28px 55px rgba(17,39,76,.18)}
.phone-head{height:160px;background:linear-gradient(135deg,var(--brand),#45a6ff);padding:34px 22px;color:#fff}
.phone-head strong{font-size:25px}
.phone-body{padding:22px}
.phone-row{height:72px;border-radius:13px;background:#eef3f9;margin-bottom:12px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}
.step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}
.step .num{font-size:30px;font-weight:900;color:var(--brand)}
.step h3{font-size:17px;color:var(--ink);margin:7px 0}
.step p{font-size:13px;color:var(--muted);margin:0}

.service-list{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.service-detail{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px}
.service-detail h2{font-size:23px;color:var(--ink);margin:14px 0 9px}
.service-detail p,.service-detail li{color:#58657a}

.policy-note{background:#fff3ed;border-left:4px solid var(--accent);border-radius:0 11px 11px 0;padding:16px 18px}

.article-wrap{width:min(920px,calc(100% - 40px));margin:auto}
.article-head{padding:48px 0 24px}
.article-head .category{font-size:12px;font-weight:900;color:var(--brand)}
.article-head h1{font-size:41px;line-height:1.3;color:var(--ink);margin:11px 0 15px}
.article-meta{display:flex;gap:14px;flex-wrap:wrap;font-size:12px;color:#8994a6}
.article-image{width:100%;height:500px;object-fit:cover;border-radius:20px}
.article-deck{margin:26px 0;background:#edf4ff;border:1px solid #dce8fb;border-radius:14px;padding:21px;font-size:17px;color:#40506a}
.article-text{background:#fff;border:1px solid var(--line);border-radius:18px;padding:38px}
.article-text h2{font-size:27px;color:var(--ink);margin:34px 0 12px}
.article-text h2:first-child{margin-top:0}
.article-text h3{font-size:20px;color:var(--ink)}
.article-text p,.article-text li{font-size:17px;color:#47556b}
.related{padding:38px 0 70px}

.footer{background:#081428;color:#b6c3d6;padding:50px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.45fr repeat(3,1fr);gap:34px}
.footer-title{font-weight:900;color:#fff;margin-bottom:10px}
.footer p,.footer a{font-size:13px}
.footer a{display:block;margin:7px 0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:29px;padding-top:18px;font-size:12px;color:#8491a6}

@media(max-width:1020px){
 .hero-grid,.about-grid,.cap-grid,.faq-grid,.content-layout,.app-grid,.platform{grid-template-columns:1fr}
 .intro-grid{grid-template-columns:1fr 1fr}
 .intro-item:nth-child(2){border-right:0}.intro-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
 .service-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto}.service-card.main{grid-row:auto;grid-column:1/3;min-height:320px}
 .adv-grid,.review-grid,.news-grid{grid-template-columns:1fr 1fr}
 .steps{grid-template-columns:1fr 1fr}
 .nav{display:none;position:absolute;left:0;right:0;top:78px;background:#fff;border-bottom:1px solid var(--line);padding:18px 25px;flex-direction:column;gap:0}
 .nav.open{display:flex}.nav a{padding:12px 0}.nav a.active:after{display:none}.menu-btn{display:block}
 .side-box{position:static}
}
@media(max-width:650px){
 .container,.article-wrap{width:min(var(--max),calc(100% - 28px))}
 .topbar{display:none}.section{padding:55px 0}.hero{padding:48px 0 75px}
 .hero h1{font-size:38px}.hero-media{min-height:360px}.hero-media .main{height:275px;width:85%}.hero-media .sub{height:175px;width:56%}.hero-note{right:0}
 .intro-grid,.adv-grid,.review-grid,.news-grid,.steps,.service-list,.points,.platform-links{grid-template-columns:1fr}
 .intro-item{border-right:0;border-bottom:1px solid var(--line)}.intro-item:last-child{border-bottom:0}
 .service-grid{grid-template-columns:1fr}.service-card.main{grid-column:auto}
 .page-hero h1,.article-head h1{font-size:31px}.article-image{height:280px}.content-box,.article-text{padding:24px}
 .footer-grid{grid-template-columns:1fr 1fr}
}


/* 新闻栏目：桌面端每行4篇 */
.news-index-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.news-index-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  overflow:hidden;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
}
.news-index-card img{
  width:100%;
  height:170px;
  object-fit:cover;
}
.news-index-body{
  padding:18px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.news-index-card h2{
  font-size:17px;
  line-height:1.5;
  color:var(--ink);
  margin:10px 0 8px;
}
.news-index-card p{
  font-size:13px;
  line-height:1.75;
  color:var(--muted);
  margin:0;
}
.news-index-card time{
  display:block;
  font-size:12px;
  color:#8a95a7;
  margin-top:auto;
  padding-top:14px;
}
@media(max-width:1020px){
  .news-index-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:650px){
  .news-index-grid{grid-template-columns:1fr}
  .news-index-card img{height:210px}
}


/* ===== 正式新闻详情页 ===== */
.article-shell{
  display:grid;
  grid-template-columns:minmax(0,1fr) 280px;
  gap:34px;
  align-items:start;
  padding-bottom:70px;
}
.article-main{
  min-width:0;
}
.article-side{
  position:sticky;
  top:105px;
}
.article-side-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:20px;
  margin-bottom:16px;
}
.article-side-card h3{
  margin:0 0 12px;
  font-size:17px;
  color:var(--ink);
}
.article-side-card p{
  margin:0;
  font-size:13px;
  color:var(--muted);
}
.article-side-card a{
  display:block;
  padding:9px 0;
  border-bottom:1px solid #edf0f5;
  font-size:13px;
  color:#48566c;
}
.article-side-card a:last-child{border-bottom:0}
.article-side-card a:hover{color:var(--brand)}

.article-head-pro{
  padding:48px 0 24px;
}
.article-head-pro .breadcrumb{
  margin-bottom:17px;
}
.article-category{
  display:inline-flex;
  padding:5px 10px;
  border-radius:999px;
  background:#eaf2ff;
  color:var(--brand);
  font-size:12px;
  font-weight:900;
}
.article-head-pro h1{
  font-size:42px;
  line-height:1.3;
  color:var(--ink);
  margin:13px 0 15px;
  letter-spacing:-.02em;
}
.article-info{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  color:#8792a4;
  font-size:12px;
}
.article-cover{
  width:100%;
  height:500px;
  object-fit:cover;
  border-radius:20px;
  margin-bottom:24px;
}
.article-lead{
  background:#eef5ff;
  border-left:4px solid var(--brand);
  border-radius:0 14px 14px 0;
  padding:20px 22px;
  font-size:17px;
  color:#3f4f68;
  margin-bottom:22px;
}
.article-keypoints{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:22px;
  margin-bottom:22px;
}
.article-keypoints h2{
  margin:0 0 12px;
  font-size:20px;
  color:var(--ink);
}
.article-keypoints ul{
  margin:0;
  padding-left:20px;
  color:#516077;
}
.article-keypoints li{margin:8px 0}
.article-content{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:38px;
}
.article-content h2{
  font-size:27px;
  color:var(--ink);
  margin:36px 0 12px;
}
.article-content h2:first-child{margin-top:0}
.article-content h3{
  font-size:20px;
  color:var(--ink);
  margin:28px 0 10px;
}
.article-content p,
.article-content li{
  font-size:17px;
  color:#46546a;
}
.article-content blockquote{
  margin:26px 0;
  padding:18px 20px;
  background:#f6f9fd;
  border-left:4px solid var(--accent);
  color:#4a586e;
}
.article-tags{
  display:flex;
  flex-wrap:wrap;
  gap:9px;
  margin:24px 0;
}
.article-tags strong{
  margin-right:3px;
  color:var(--ink);
  font-size:14px;
}
.article-tag{
  padding:7px 11px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  color:#536079;
  font-size:12px;
}
.article-nav{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin:26px 0;
}
.article-nav a{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:18px;
  min-height:98px;
}
.article-nav a:hover{border-color:#b8c9e7;box-shadow:var(--shadow)}
.article-nav small{
  display:block;
  color:#8a95a8;
  margin-bottom:7px;
}
.article-nav strong{
  display:block;
  color:var(--ink);
  line-height:1.5;
}
.article-nav .next{text-align:right}
.article-recommend{
  margin-top:34px;
}
.article-recommend h2{
  font-size:28px;
  color:var(--ink);
  margin-bottom:18px;
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}
.related-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
}
.related-card img{
  width:100%;
  height:145px;
  object-fit:cover;
}
.related-card .inner{
  padding:15px;
}
.related-card .cat{
  color:var(--brand);
  font-size:11px;
  font-weight:900;
}
.related-card h3{
  font-size:15px;
  line-height:1.5;
  color:var(--ink);
  margin:7px 0;
}
.related-card time{
  font-size:11px;
  color:#8b96a7;
}
.article-footer-info{
  background:var(--deep);
  color:#fff;
  border-radius:17px;
  padding:22px;
  margin-top:26px;
}
.article-footer-info strong{
  display:block;
  font-size:18px;
  margin-bottom:7px;
}
.article-footer-info p{
  margin:0;
  color:#b9c6da;
  font-size:13px;
}
.article-back{
  display:inline-flex;
  margin-top:16px;
  color:#fff;
  font-weight:900;
  font-size:13px;
}

@media(max-width:1020px){
  .article-shell{grid-template-columns:1fr}
  .article-side{position:static}
}
@media(max-width:650px){
  .article-head-pro h1{font-size:31px}
  .article-cover{height:280px}
  .article-content{padding:24px}
  .article-nav{grid-template-columns:1fr}
  .article-nav .next{text-align:left}
  .related-grid{grid-template-columns:1fr}
  .related-card img{height:210px}
}