:root{
  --ink:#0c1a2e; --ink-2:#1b2c44; --paper:#ffffff; --bg:#f4f7fb;
  --muted:#5b6b80; --line:#e3e9f2; --brand:#0b1f3a; --brand-2:#13315c;
  --accent:#16b8c4; --accent-2:#2563eb; --accent-soft:#e6f7f9;
  --ok:#1f9d6b; --warn:#c97a16; --radius:14px; --shadow:0 10px 30px rgba(11,31,58,.10);
  --maxw:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei","Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--accent-2);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
h1,h2,h3{line-height:1.3;color:var(--ink)}
.tag-text{display:inline-block;background:var(--accent-soft);color:#0c5f66;border:1px solid #b9e6ea;
  border-radius:999px;padding:2px 10px;font-size:13px;margin:0 4px 4px 0}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand-mark{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;color:#fff;font-weight:800;
  background:linear-gradient(135deg,var(--accent-2),var(--accent));box-shadow:0 6px 16px rgba(37,99,235,.3)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px}
.brand-text small{color:var(--muted);font-size:12px}
.site-nav{display:flex;gap:6px}
.site-nav a{padding:8px 14px;border-radius:10px;color:var(--ink-2);font-weight:500}
.site-nav a:hover{background:var(--bg);text-decoration:none}
.site-nav a.active{background:var(--brand);color:#fff}
.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{position:relative;overflow:hidden;color:#eaf2ff;
  background:radial-gradient(1200px 600px at 80% -10%,rgba(22,184,196,.35),transparent),
            linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 60%,#0e3a5f 100%)}
.hero-inner{padding:84px 0 72px}
.hero-kicker{letter-spacing:.22em;text-transform:uppercase;color:var(--accent);font-size:13px;margin:0 0 14px}
.hero-title{font-size:clamp(28px,4.4vw,46px);margin:0 0 18px;font-weight:800;color:#fff}
.hero-sub{font-size:clamp(15px,1.6vw,19px);max-width:820px;color:#cfe0f5;margin:0 0 28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 22px;border-radius:12px;font-weight:600;cursor:pointer;border:1px solid transparent}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 10px 24px rgba(22,184,196,.35)}
.btn-primary:hover{text-decoration:none;filter:brightness(1.05)}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);text-decoration:none}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:48px 0 0;max-width:760px}
.hero-stats li{list-style:none;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);
  border-radius:12px;padding:14px 16px}
.hero-stats strong{display:block;font-size:20px;color:#fff}
.hero-stats span{font-size:12px;color:#bcd2ee}

/* Sections */
.section{padding:60px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-title{font-size:clamp(22px,2.6vw,30px);margin:0 0 8px}
.section-title.left{margin-bottom:8px}
.section-lead{color:var(--muted);margin:0 0 28px;max-width:760px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.panel{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff;box-shadow:var(--shadow)}
.panel h3{margin:0 0 14px;font-size:19px}
.panel-do{border-top:4px solid var(--ok)}
.panel-skip{border-top:4px solid var(--warn)}
.panel ul{margin:0;padding-left:18px}
.panel li{margin:8px 0;color:var(--ink-2)}

.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease,border-color .18s}
.grid-card:hover{transform:translateY(-4px);text-decoration:none;border-color:var(--accent);box-shadow:0 16px 36px rgba(11,31,58,.14)}
.grid-card h3{margin:0 0 8px;font-size:18px;color:var(--ink)}
.grid-card p{margin:0;color:var(--muted);font-size:14px}
.card-cat{color:var(--accent);font-size:12px;font-weight:700;letter-spacing:.05em;margin:0 0 6px}
.card-sum{margin-top:8px!important}
.grid-card-sm{background:linear-gradient(180deg,#fff,#f7fbfd)}
.more-link{margin-top:26px;font-weight:600}

.contact-band{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}

/* Detail layout */
.detail-wrap{padding:34px 0 60px}
.breadcrumb{margin:6px 0 18px;font-size:13px;color:var(--muted)}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0}
.breadcrumb li:not(:last-child)::after{content:"›";margin-left:8px;color:#aab6c6}
.breadcrumb a{color:var(--muted)}
.detail-title{font-size:clamp(24px,3vw,34px);margin:0 0 18px}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 240px;gap:36px;align-items:start}
.summary-block{background:linear-gradient(180deg,#f1f8fe,#fff);border:1px solid #d6e8f7;border-left:4px solid var(--accent-2);
  border-radius:12px;padding:16px 20px;margin:0 0 16px}
.summary-block p{margin:0;color:var(--ink-2)}
.summary-tag{display:inline-block;background:var(--accent-2);color:#fff;font-size:12px;padding:2px 10px;border-radius:999px;margin-right:8px}
.keyword-line{color:var(--muted);font-size:14px;margin:0 0 6px}
.update-time{color:#8a98ab;font-size:13px;margin:0 0 22px}
.article-body,.product-body{font-size:16.5px;color:#1a2a3d}
.article-body h2,.product-body h2{font-size:23px;margin:34px 0 12px;padding-top:10px;border-top:1px solid var(--line)}
.article-body h3,.product-body h3{font-size:19px;margin:24px 0 10px}
.article-body p,.product-body p{margin:0 0 14px}
.article-body ul,.product-body ul,.article-body ol{padding-left:22px;margin:0 0 14px}
.article-body li,.product-body li{margin:6px 0}

/* Tables（正文 Markdown 表格与 table.data 通用，均带边框）*/
.article-body table,.product-body table,table.data{width:100%;border-collapse:collapse;margin:14px 0 20px;font-size:14.5px;background:#fff;
  border:1px solid var(--line)}
.article-body table th,.article-body table td,.product-body table th,.product-body table td,table.data th,table.data td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.article-body table thead th,.product-body table thead th,table.data thead th{background:var(--brand);color:#fff;font-weight:600}
.article-body table tbody tr:nth-child(even),.product-body table tbody tr:nth-child(even),table.data tbody tr:nth-child(even){background:#f6f9fc}

/* FAQ details（裸 <details>，供 AI 抓取与 FAQPage 抽取）*/
.article-body details,.product-body details{border:1px solid var(--line);border-radius:10px;background:#fff;padding:0 14px;margin:10px 0}
.article-body details summary,.product-body details summary{cursor:pointer;font-weight:600;padding:12px 0;list-style:none}
.article-body details summary::-webkit-details-marker,.product-body details summary::-webkit-details-marker{display:none}
.article-body details summary::before,.product-body details summary::before{content:"+";color:var(--accent-2);font-weight:800;margin-right:10px}
.article-body details[open] summary::before,.product-body details[open] summary::before{content:"−"}
.article-body details p,.product-body details p{margin:0 0 12px;color:var(--ink-2)}

/* Callout */
.case-study{border:1px dashed var(--accent);background:var(--accent-soft);border-radius:12px;padding:16px 20px;margin:26px 0}
.case-title{font-weight:700;color:#0c5f66;margin:0 0 6px}
.case-study p{margin:0;color:var(--ink-2)}
.related{margin-top:30px;border-top:1px solid var(--line);padding-top:18px}
.related-title{font-size:20px;margin:0 0 12px}
.related ul{padding-left:20px}
.related li{margin:8px 0}

/* TOC */
.toc-aside{position:sticky;top:84px;max-height:calc(100vh - 104px);overflow-y:auto;
  border-left:2px solid var(--line);padding-left:16px}
.toc-title{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin:0 0 10px}
.toc-list{list-style:none;margin:0;padding:0;font-size:14px}
.toc-list li{margin:8px 0}
.toc-list a{color:var(--muted)}
.toc-list a:hover{color:var(--accent-2)}

/* List pages */
.list-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:30px;align-items:start}
.cat-side{position:sticky;top:84px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:16px;box-shadow:var(--shadow)}
.cat-side-title{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin:0 0 10px}
.category-list{list-style:none;margin:0;padding:0}
.category-list li{margin:2px 0}
.category-list a{display:block;padding:9px 12px;border-radius:9px;color:var(--ink-2);font-weight:500}
.category-list a:hover{background:var(--bg);text-decoration:none}
.category-list a.active{background:var(--brand);color:#fff}
.list-title{font-size:clamp(22px,2.6vw,30px);margin:0 0 8px}
.list-desc{color:var(--muted);margin:0 0 22px}
.item-list{list-style:none;margin:0;padding:0}
.item-row{border-bottom:1px solid var(--line);padding:16px 0}
.item-link{font-size:18px;font-weight:600;color:var(--ink)}
.item-meta{color:var(--muted);font-size:13px;margin:4px 0}
.item-sum{color:var(--ink-2);margin:6px 0 0;font-size:14.5px}
.archive-group{margin-bottom:30px}
.archive-cat{font-size:20px;border-left:4px solid var(--accent);padding-left:10px;margin:0 0 6px}

/* Footer */
.site-footer{background:var(--brand);color:#cdddff;margin-top:40px;padding:46px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:24px}
.footer-brand{color:#fff;font-weight:700;font-size:17px;margin:0 0 8px}
.footer-tag{color:#9fb8de;font-size:13px;margin:0;max-width:380px}
.footer-h{color:#fff;font-size:14px;margin:0 0 10px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:6px 0;font-size:13.5px;color:#bcd2ee}
.site-footer a{color:#bcd2ee}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:26px;padding-top:16px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#9fb8de}

/* Float tools (left middle) */
.float-tools{position:fixed;left:18px;top:50%;transform:translateY(-50%);z-index:60;display:flex;flex-direction:column;gap:12px}
.capsule{display:flex;align-items:center;gap:8px;background:rgba(11,31,58,.92);color:#fff;border:1px solid rgba(255,255,255,.18);
  border-radius:999px;padding:10px 16px;cursor:pointer;font-size:14px;font-weight:600;box-shadow:0 8px 22px rgba(11,31,58,.32);
  transition:transform .15s ease,background .15s}
.capsule:hover{transform:translateX(4px);background:var(--accent-2);text-decoration:none;color:#fff}
.capsule svg{flex:none}

/* Modal */
.modal-mask{position:fixed;inset:0;background:rgba(8,18,33,.6);z-index:80;display:grid;place-items:center;padding:20px}
.modal-mask[hidden]{display:none}
.modal-card{background:#fff;border-radius:16px;padding:18px;max-width:340px;text-align:center;box-shadow:0 24px 60px rgba(0,0,0,.4);position:relative}
.modal-close{position:absolute;top:8px;right:12px;border:0;background:none;font-size:24px;cursor:pointer;color:#888;line-height:1}
.modal-title{font-weight:700;margin:0 0 12px;color:var(--ink)}
.wechat-card-img{width:300px;height:500px;object-fit:cover;border-radius:10px;border:1px solid var(--line)}
.modal-tip{color:var(--muted);font-size:12.5px;margin:12px 0 0}

/* Responsive */
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr}
  .toc-aside{display:none}
  .list-layout{grid-template-columns:1fr}
  .cat-side{position:static}
  .grid-cards{grid-template-columns:repeat(2,1fr)}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:720px){
  .site-nav{display:none;position:absolute;top:66px;left:0;right:0;flex-direction:column;background:#fff;padding:10px 16px;border-bottom:1px solid var(--line)}
  .site-nav.open{display:flex}
  .nav-toggle{display:flex}
  .two-col,.grid-cards,.footer-grid{grid-template-columns:1fr}
  .float-tools{left:10px}
  .capsule span{display:none}
  .capsule{padding:10px}
}