:root{
  --brand:#0b4da2;
  --brand-dark:#083a7c;
  --brand-light:#e8f0fc;
  --accent:#0f8f7e;
  --accent-light:#e3f5f1;
  --ink:#101828;
  --ink-2:#475467;
  --ink-3:#98a2b3;
  --line:#e4e7ec;
  --bg:#ffffff;
  --bg-soft:#f8fafc;
  --radius:14px;
  --shadow:0 1px 2px rgba(16,24,40,.05),0 8px 24px rgba(16,24,40,.06);
  --max:1140px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;letter-spacing:.2px}
.logo .mark{width:32px;height:32px;border-radius:9px;background:var(--brand);display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:700}
.logo span.sub{color:var(--ink-3);font-weight:500;font-size:13px}
.menu{display:flex;gap:30px;align-items:center}
.menu a{color:var(--ink-2);font-size:15px;font-weight:500;padding:6px 0;transition:color .15s}
.menu a:hover{color:var(--brand)}
.nav-cta{background:var(--brand);color:#fff!important;padding:9px 20px!important;border-radius:9px;font-size:14px!important}
.nav-cta:hover{background:var(--brand-dark)}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer}
.burger i{width:22px;height:2px;background:var(--ink);border-radius:2px}

/* hero */
.hero{background:linear-gradient(180deg,#f2f6fd 0%,#ffffff 100%);padding:84px 0 72px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.tag{display:inline-flex;align-items:center;gap:8px;background:var(--brand-light);color:var(--brand);font-size:13px;font-weight:600;padding:7px 14px;border-radius:999px;margin-bottom:22px}
.tag i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:block}
.hero h1{font-size:44px;line-height:1.25;letter-spacing:-.5px;font-weight:800;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero p.lead{font-size:17px;color:var(--ink-2);margin-bottom:32px;max-width:560px}
.btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{padding:13px 28px;border-radius:10px;font-size:15px;font-weight:600;transition:all .15s;display:inline-flex;align-items:center;gap:8px}
.btn.primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(11,77,162,.25)}
.btn.primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{border-color:var(--brand);color:var(--brand)}
.hero-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:26px}
.hero-card .row{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line)}
.hero-card .row:last-child{border-bottom:0}
.hero-card .dot{width:38px;height:38px;border-radius:10px;background:var(--brand-light);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--brand)}
.hero-card .row b{display:block;font-size:14.5px;font-weight:600}
.hero-card .row small{color:var(--ink-3);font-size:12.5px}

/* trust */
.trust{background:var(--bg-soft);border-bottom:1px solid var(--line);padding:22px 0}
.trust-in{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
.trust-item{display:flex;align-items:center;gap:9px;color:var(--ink-2);font-size:14px;font-weight:500}
.trust-item svg{flex-shrink:0;color:var(--accent)}

/* section */
section{padding:76px 0}
.sec-head{text-align:center;max-width:680px;margin:0 auto 52px}
.sec-head .kicker{color:var(--brand);font-size:14px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:12px}
.sec-head h2{font-size:33px;font-weight:800;letter-spacing:-.4px;margin-bottom:14px}
.sec-head p{color:var(--ink-2);font-size:16px}

/* services */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:all .18s}
.card:hover{border-color:#c6d6f0;box-shadow:var(--shadow);transform:translateY(-3px)}
.card .ic{width:50px;height:50px;border-radius:12px;background:var(--brand-light);color:var(--brand);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.card p{color:var(--ink-2);font-size:14.5px}
.card ul{list-style:none;margin-top:14px;display:flex;flex-direction:column;gap:7px}
.card ul li{font-size:13.5px;color:var(--ink-2);padding-left:20px;position:relative}
.card ul li:before{content:"";position:absolute;left:0;top:9px;width:12px;height:12px;background:var(--accent-light);border-radius:3px;border:1px solid #b6e0d7}

/* tech band */
.band{background:var(--brand);color:#fff;border-radius:24px;padding:56px 48px;position:relative;overflow:hidden}
.band .kicker{color:#9dc0f0;font-size:13px;font-weight:700;letter-spacing:1.5px;margin-bottom:12px}
.band h2{font-size:30px;font-weight:800;margin-bottom:14px}
.band>p{color:#c9dcf5;max-width:640px;margin-bottom:36px}
.band-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.band-item{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:24px}
.band-item .num{font-size:13px;font-weight:700;color:#9dc0f0;margin-bottom:12px}
.band-item h3{font-size:17px;font-weight:700;margin-bottom:8px}
.band-item p{color:#c9dcf5;font-size:14px}

/* process */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:s}
.step{padding:0 22px;position:relative}
.step:not(:last-child):after{content:"";position:absolute;right:0;top:22px;width:1px;height:56px;background:var(--line)}
.step .n{width:44px;height:44px;border-radius:50%;background:var(--brand-light);color:var(--brand);font-weight:800;display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:18px}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.step p{color:var(--ink-2);font-size:14px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat b{display:block;font-size:38px;font-weight:800;color:var(--brand);letter-spacing:-1px}
.stat span{color:var(--ink-2);font-size:14px}

/* cta */
.cta{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center}
.cta h2{font-size:30px;font-weight:800;margin-bottom:14px}
.cta p{color:var(--ink-2);margin-bottom:30px;font-size:16px}

/* footer */
footer{background:#0b1220;color:#9aa4b8;padding:64px 0 28px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:44px}
.foot-brand .logo{color:#fff;margin-bottom:16px}
.foot-brand p{color:#7c8798;max-width:320px}
footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
footer ul{list-style:none;display:flex;flex-direction:column;gap:10px}
footer ul li a:hover{color:#fff}
.foot-bottom{border-top:1px solid #1e293b;padding-top:24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#64748b;font-size:13px}

@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:34px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .band-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:34px}
  .step:not(:last-child):after{display:none}
  .stats{grid-template-columns:repeat(2,1fr);row-gap:30px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .menu{display:none}
  .burger{display:flex}
  section{padding:56px 0}
}
@media(max-width:560px){
  .grid-4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .band{padding:36px 24px}
  .hero{padding:56px 0}
}

/* ===== 子页 hero ===== */
.page-hero{background:linear-gradient(180deg,#f2f6fd 0%,#fff 100%);border-bottom:1px solid var(--line);padding:64px 0 52px;text-align:center}
.page-hero h1{font-size:36px;font-weight:800;letter-spacing:-.4px;margin-bottom:14px}
.page-hero p{color:var(--ink-2);max-width:620px;margin:0 auto;font-size:16px}
.crumb{font-size:13px;color:var(--ink-3);margin-bottom:18px}
.crumb a:hover{color:var(--brand)}

/* ===== 新闻列表 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;display:flex;flex-direction:column;transition:all .18s}
.news-card:hover{border-color:#c6d6f0;box-shadow:var(--shadow);transform:translateY(-3px)}
.news-card .meta{display:flex;gap:10px;align-items:center;margin-bottom:14px}
.news-card .cat{font-size:12px;font-weight:700;color:var(--brand);background:var(--brand-light);padding:3px 10px;border-radius:999px}
.news-card time{font-size:12.5px;color:var(--ink-3)}
.news-card h3{font-size:16.5px;font-weight:700;line-height:1.55;margin-bottom:12px}
.news-card h3 a:hover{color:var(--brand)}
.news-card p{color:var(--ink-2);font-size:13.8px;flex:1}
.news-card .more{margin-top:16px;font-size:13.5px;font-weight:600;color:var(--brand)}

/* ===== 文章页 ===== */
.article-wrap{max-width:800px;margin:0 auto;padding:56px 24px 80px}
.article-head{margin-bottom:36px;border-bottom:1px solid var(--line);padding-bottom:28px}
.article-head h1{font-size:30px;font-weight:800;line-height:1.4;letter-spacing:-.3px;margin-bottom:16px}
.article-head .meta{display:flex;gap:16px;color:var(--ink-3);font-size:13.5px;flex-wrap:wrap}
.article-body p{margin-bottom:18px;color:#1d2939;font-size:16px;line-height:1.9;text-align:justify}
.article-body h2{font-size:22px;font-weight:700;margin:34px 0 16px}
.article-body h3{font-size:18px;font-weight:700;margin:26px 0 12px}
.article-body ul,.article-body ol{margin:0 0 18px 22px;color:#1d2939}
.article-body li{margin-bottom:8px;line-height:1.8}
.article-foot{margin-top:44px;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:14px;color:var(--ink-3)}
.article-foot a{color:var(--brand);font-weight:600}

/* ===== 关于页 ===== */
.about-block{max-width:820px;margin:0 auto 26px}
.about-block h2{font-size:24px;font-weight:800;margin-bottom:14px}
.about-block p{color:var(--ink-2);margin-bottom:14px;text-align:justify}
.timeline{max-width:820px;margin:0 auto;border-left:2px solid var(--brand-light);padding-left:26px;display:flex;flex-direction:column;gap:22px}
.tl-item{position:relative}
.tl-item:before{content:"";position:absolute;left:-33px;top:7px;width:12px;height:12px;border-radius:50%;background:var(--brand);border:3px solid var(--brand-light)}
.tl-item b{display:block;font-size:15.5px;margin-bottom:4px}
.tl-item span{color:var(--ink-3);font-size:13px;margin-right:10px}
.tl-item p{color:var(--ink-2);font-size:14.5px}

/* ===== 联系页 ===== */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;max-width:980px;margin:0 auto}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 28px;text-align:center;transition:all .18s}
.contact-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.contact-card .ic{width:56px;height:56px;border-radius:14px;background:var(--brand-light);color:var(--brand);display:flex;align-items:center;justify-content:center;margin:0 auto 18px}
.contact-card h3{font-size:16px;font-weight:700;margin-bottom:8px}
.contact-card p{color:var(--ink-2);font-size:15px;font-weight:600;word-break:break-all}
.contact-card small{display:block;color:var(--ink-3);font-size:12.5px;margin-top:6px}
.qr-card{max-width:340px;margin:44px auto 0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;text-align:center;box-shadow:var(--shadow)}
.qr-card img{width:190px;border-radius:10px;margin:0 auto 14px}
.qr-card b{display:block;font-size:15px;margin-bottom:4px}
.qr-card span{color:var(--ink-3);font-size:13px}

@media(max-width:900px){
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:28px}
}
@media(max-width:560px){
  .news-grid{grid-template-columns:1fr}
  .article-wrap{padding:36px 20px 60px}
  .article-head h1{font-size:24px}
}

/* ===== 卡片封面图 ===== */
.news-card{padding:0;overflow:hidden}
.news-card .cover{display:block;aspect-ratio:16/10;overflow:hidden;background:#eef3fb}
.news-card .cover img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s ease}
.news-card:hover .cover img{transform:scale(1.05)}
.news-card .np-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.news-card .np-body .meta{margin-bottom:14px}
.news-card .imgn{font-size:12px;color:var(--ink-3);margin-left:auto}

/* ===== 文章正文配图 ===== */
.article-body figure.art-img{margin:28px 0;text-align:center}
.article-body figure.art-img img{max-width:100%;height:auto;border-radius:12px;border:1px solid var(--line);box-shadow:0 6px 20px rgba(15,40,90,.06);display:inline-block}