:root{
  --bg:#ffffff; --bg-alt:#f4f7fb; --ink:#0b1f33; --ink-2:#3a4d61; --muted:#5a6b7b;
  --line:#e2e9f1; --brand:#0b5cab; --brand-2:#1f8fd6; --brand-d:#0a3f7a;
  --accent:#0fbf9f; --radius:14px; --maxw:1520px; --shadow:0 8px 30px rgba(11,31,51,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-2)}
img{max-width:100%}
.container{max-width:1280px;margin:0 auto;padding:0 20px}
h1,h2,h3,h4{line-height:1.3;color:var(--ink)}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink)}
.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--brand);color:#fff;font-size:13px;font-weight:800}
.brand-name{font-size:18px;letter-spacing:.3px}
.main-nav{display:flex;gap:22px;flex-wrap:wrap}
.main-nav a{color:var(--ink-2);font-weight:600;font-size:15px;padding:6px 0;border-bottom:2px solid transparent}
.main-nav a:hover{border-color:var(--brand);color:var(--brand)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px}

/* Hero */
.hero{background:radial-gradient(1200px 500px at 70% -10%,rgba(31,143,214,.18),transparent),linear-gradient(180deg,#0b1f33,#0e2a45);color:#fff;padding:74px 0 66px}
.hero-kicker{letter-spacing:3px;text-transform:uppercase;color:#9fc6e8;font-size:13px;margin:0 0 12px}
.hero-title{font-size:clamp(26px,4vw,44px);margin:0 0 16px;font-weight:800;color:#fff}
.hero-sub{font-size:18px;color:#cfe2f3;max-width:760px;margin:0 0 26px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:700;font-size:15px;transition:.2s;cursor:pointer;border:1px solid transparent}
.btn-primary{background:var(--brand-2);color:#fff}
.btn-primary:hover{background:var(--brand);color:#fff}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08);color:#fff}
.hero-stats{display:flex;gap:34px;flex-wrap:wrap;list-style:none;padding:0;margin:0}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats b{font-size:28px;color:#fff}
.hero-stats span{color:#9fc6e8;font-size:13px}

/* Sections */
.section{padding:60px 0}
.section-alt{background:var(--bg-alt)}
.section-title{font-size:26px;margin:0 0 28px;position:relative;padding-left:14px}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:3px;background:var(--brand)}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.cat-grid-article{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.cat-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.2s;box-shadow:var(--shadow)}
.cat-card:hover{transform:translateY(-3px);border-color:var(--brand-2)}
.cat-card h3{margin:0 0 8px;font-size:18px;color:var(--brand-d)}
.cat-card p{margin:0;color:var(--muted);font-size:14px}
.svc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.svc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.svc-card h3{margin:0 0 8px;color:var(--brand-d)}
.svc-card p{margin:0;color:var(--muted);font-size:14px}
.cta-section{background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff}
.cta-inner{text-align:center}
.cta-inner h2{color:#fff;margin:0 0 10px}
.cta-inner p{color:#dcecfb;margin:0 0 20px}
.cta-section .btn-primary{background:#fff;color:var(--brand-d)}
.cta-section .btn-primary:hover{background:#eaf3ff}

/* Home posts */
.home-posts{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.post-item{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);transition:.2s}
.post-item:hover{transform:translateY(-3px);border-color:var(--brand-2)}
.post-cat{font-size:12px;color:var(--brand);font-weight:700}
.post-title{font-size:17px;font-weight:700;color:var(--ink)}
.post-summary{font-size:14px;color:var(--muted)}

/* Layout detail */
.page{padding:30px 0 60px}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:40px;max-width:1280px;margin:0 auto;padding:0 20px;align-items:start}
.content-col{min-width:0;max-width:1080px}
.breadcrumb-wrap{max-width:1280px;margin:0 auto;padding:14px 20px 0}
.breadcrumb{font-size:13px;color:var(--muted);margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.breadcrumb li:not(:last-child)::after{content:"›";margin-left:8px;color:var(--line)}
.breadcrumb a{color:var(--muted)}
.content-col h1{font-size:30px;margin:6px 0 14px}
.content-col h2{font-size:23px;margin:34px 0 12px;padding-top:8px;border-top:1px solid var(--line)}
.content-col h3{font-size:19px;margin:24px 0 10px}
.content-col p{margin:0 0 14px}
.content-col ul,.content-col ol{padding-left:22px;margin:0 0 14px}
.content-col li{margin:6px 0}
.update-time{font-size:13px;color:var(--muted);background:var(--bg-alt);display:inline-block;padding:4px 10px;border-radius:8px;margin:0 0 14px}
.callout{border-left:4px solid var(--accent);background:var(--bg-alt);padding:14px 16px;border-radius:0 10px 10px 0;margin:18px 0}
.callout-tag{display:inline-block;font-weight:700;color:#0c7a66;margin-right:6px}
table.data{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px;background:#fff;box-shadow:var(--shadow);border-radius:10px;overflow:hidden}
table.data th,table.data td{border:1px solid var(--line);padding:10px 12px;text-align:left}
table.data th{background:var(--brand-d);color:#fff;font-weight:700}
table.data tr:nth-child(even) td{background:#f7fafd}
blockquote{border-left:4px solid var(--brand-2);background:var(--bg-alt);margin:16px 0;padding:12px 16px;color:var(--ink-2);border-radius:0 10px 10px 0}
.faq details{border:1px solid var(--line);border-radius:10px;margin:10px 0;padding:0 14px;background:#fff}
.faq details summary{cursor:pointer;font-weight:700;padding:12px 0;color:var(--brand-d)}
.faq details p{margin:0 0 12px;color:var(--ink-2)}
.related{margin-top:30px;border-top:1px dashed var(--line);padding-top:18px}
.related ul{list-style:none;padding:0}
.related li{margin:8px 0}
.related a{font-weight:600}

/* TOC */
.toc-aside{position:sticky;top:80px;max-height:calc(100vh - 100px);overflow-y:auto}
.toc-nav{background:var(--bg-alt);border:1px solid var(--line);border-radius:12px;padding:14px}
.toc-title{font-size:13px;color:var(--muted);margin:0 0 8px;font-weight:700;letter-spacing:1px}
.toc-nav ul{list-style:none;margin:0;padding:0}
.toc-nav li{margin:6px 0}
.toc-lv3{padding-left:14px;font-size:14px}
.toc-nav a{color:var(--ink-2);font-size:14px}

/* List pages */
.list-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:40px;max-width:1280px;margin:0 auto;padding:0 20px}
.cat-side{position:sticky;top:80px;align-self:start;width:280px}
.category-list{list-style:none;margin:0;padding:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.category-list li a{display:block;padding:12px 16px;color:var(--ink-2);border-bottom:1px solid var(--line);font-weight:600}
.category-list li:last-child a{border-bottom:0}
.category-list li a:hover,.category-list li a.active{background:var(--brand);color:#fff}
.cat-content{min-width:0}
.list-title{font-size:28px;margin:0 0 8px}
.cat-desc{color:var(--muted);margin:0 0 20px}
.post-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.post-list .post-item{margin-bottom:0}
.post-link{display:flex;flex-direction:column;gap:4px}
.post-meta{font-size:12px;color:var(--muted)}

/* Footer */
.site-footer{background:#0b1f33;color:#cfe2f3;padding:46px 0 22px;margin-top:40px}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:26px;max-width:1280px;margin:0 auto;padding:0 20px}
.footer-col h3{color:#fff;font-size:15px;margin:0 0 12px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin:8px 0}
.footer-col a{color:#9fc6e8;font-size:14px}
.footer-col a:hover{color:#fff}
.footer-desc{font-size:14px;color:#9fc6e8;max-width:340px}
.footer-bottom{max-width:1280px;margin:26px auto 0;padding:18px 20px 0;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:#9fc6e8}
.beian{display:flex;gap:18px;flex-wrap:wrap;margin:0}
.beian a{color:#9fc6e8;display:inline-flex;align-items:center;gap:5px}
.beian-ico{vertical-align:middle}

/* Float capsules */
.float-capsules{position:fixed;right:22px;top:50%;transform:translateY(-50%);z-index:60;display:flex;flex-direction:column;gap:12px}
.capsule{display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--brand-d);border:1px solid var(--line);
  border-radius:999px;padding:10px 16px;font-weight:700;font-size:14px;box-shadow:var(--shadow);cursor:pointer;transition:.2s}
.capsule:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.capsule .cap-ico{color:var(--brand-2)}
.capsule:hover .cap-ico{color:#fff}

/* Card modal */
.card-modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center}
.card-modal[hidden]{display:none}
.card-modal-mask{position:absolute;inset:0;background:rgba(8,20,34,.72)}
.card-modal-body{position:relative;max-width:92vw;max-height:92vh;background:#fff;border-radius:16px;padding:14px;box-shadow:0 20px 60px rgba(0,0,0,.4)}
.card-modal-img{max-height:80vh;width:auto;display:block;border-radius:8px}
.card-modal-close{position:absolute;top:-14px;right:-14px;width:34px;height:34px;border-radius:50%;border:0;background:var(--brand);color:#fff;font-size:20px;cursor:pointer;box-shadow:var(--shadow)}

/* Business card page */
.card-page{padding:50px 0}
.card-page-inner{max-width:760px;margin:0 auto;padding:0 20px;text-align:center}
.card-page-title{font-size:30px;margin:0 0 10px}
.card-page-sub{color:var(--muted);margin:0 0 26px}
.card-figure{margin:0 0 22px}
.card-img{max-width:360px;width:100%;border-radius:16px;box-shadow:var(--shadow);border:1px solid var(--line)}
.card-figure figcaption{color:var(--muted);font-size:13px;margin-top:10px}
.card-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:30px}
.card-info{text-align:left;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.card-info h2{font-size:18px;margin:0 0 12px;color:var(--brand-d)}
.card-info ul{padding-left:20px;margin:0}
.card-info li{margin:8px 0;color:var(--ink-2)}

.archive pre,.notfound{white-space:pre-wrap;font-family:inherit;background:var(--bg-alt);padding:18px;border-radius:12px}
.notfound{text-align:center;padding:60px 20px}
.notfound a{font-weight:700}

/* Tables */
.content-col table,.article-body table{width:100%;border-collapse:collapse;font-size:14px;margin:0 0 18px}
.content-col th,.content-col td,.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.content-col th,.article-body th{background:var(--bg-alt);color:var(--brand-d);font-weight:700}

/* Responsive */
@media (max-width:1240px){
  .hero{padding:60px 0 54px}
}
@media (max-width:1024px){
  .layout{grid-template-columns:1fr}
  .toc-aside{display:none}
  .list-layout{grid-template-columns:1fr}
  .cat-side{position:static;width:auto;margin-bottom:22px}
  .cat-side .category-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:14px 20px;border-bottom:1px solid var(--line);gap:6px}
  .main-nav.open{display:flex}
  .nav-toggle{display:flex}
  .hero{padding:46px 0 42px}
  .hero h1{font-size:30px}
  .list-title{font-size:24px}
  .home-posts,.post-list{grid-template-columns:1fr}
  .cat-side .category-list{grid-template-columns:1fr 1fr}
  .footer-inner{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
  .float-capsules{right:12px}
  .capsule span{display:none}
  .capsule{padding:10px}
  .content-col table,.article-body table{display:block;overflow-x:auto;white-space:nowrap;font-size:13px}
}