:root{
  --bg:#070b14;
  --bg-2:#0b1220;
  --panel:#0e1626;
  --panel-2:#111c30;
  --line:rgba(120,160,210,.14);
  --line-strong:rgba(120,160,210,.28);
  --text:#e6edf7;
  --text-soft:#aab8cc;
  --text-dim:#7c8aa3;
  --cyan:#22d3ee;
  --cyan-2:#38bdf8;
  --accent:#5b8cff;
  --ok:#34d399;
  --warn:#fbbf24;
  --radius:14px;
  --maxw:1200px;
  --header-h:64px;
  --h2-inset:0px;
  --font:"Segoe UI","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font);line-height:1.75;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--cyan);text-decoration:none;transition:color .15s}
a:hover{color:var(--cyan-2)}
img{max-width:100%}
h1,h2,h3,h4{line-height:1.3;font-weight:700;color:#fff}
.container{max-width:var(--maxw);margin:0 auto;padding:96px 24px 64px}
.h2-inset{--h2-inset:16px}

/* ── 头部 ── */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;height:var(--header-h);
  background:rgba(7,11,20,.82);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{max-width:var(--maxw);margin:0 auto;height:100%;
  display:flex;align-items:center;gap:18px;padding:0 24px}
.logo{display:flex;align-items:center;gap:10px;color:#fff}
.logo img{width:32px;height:32px;border-radius:8px}
.logo-text{font-weight:800;letter-spacing:.5px;color:#fff;font-size:17px}
.logo-sub{font-size:11px;color:var(--text-dim);border-left:1px solid var(--line);
  padding-left:10px;margin-left:2px;align-self:center}
.nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.nav-list>li{position:relative}
.nav-list>li>a,.nav-toggle{
  display:block;padding:9px 13px;color:var(--text-soft);font-size:14.5px;
  background:none;border:0;cursor:pointer;font-family:inherit;border-radius:8px}
.nav-list>li>a:hover,.nav-toggle:hover{color:#fff;background:var(--panel)}
.has-sub .submenu{
  position:absolute;top:100%;left:0;min-width:172px;list-style:none;margin:0;
  padding:8px;background:var(--panel-2);border:1px solid var(--line);
  border-radius:12px;box-shadow:0 18px 40px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transform:translateY(6px);transition:.16s}
.has-sub:hover .submenu,.has-sub.open .submenu{opacity:1;visibility:visible;transform:none}
.submenu li a{display:block;padding:8px 12px;color:var(--text-soft);border-radius:8px;font-size:14px}
.submenu li a:hover{background:var(--panel);color:#fff}
.nav-burger{display:none;margin-left:auto;width:42px;height:38px;background:var(--panel);
  border:1px solid var(--line);border-radius:10px;cursor:pointer;flex-direction:column;
  gap:5px;align-items:center;justify-content:center}
.nav-burger span{width:20px;height:2px;background:var(--text);display:block;border-radius:2px}

/* ── 面包屑 ── */
.breadcrumb-nav{margin:0 0 18px}
.breadcrumb{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;
  font-size:13px;color:var(--text-dim)}
.breadcrumb li{display:flex;align-items:center}
.breadcrumb li:not(:last-child)::after{content:"›";margin-left:8px;color:var(--text-dim)}
.breadcrumb li[aria-current="page"]{color:var(--text-soft)}
.breadcrumb a{color:var(--text-dim)}
.breadcrumb a:hover{color:var(--cyan)}

/* ── 文章详情 ── */
.article-layout{max-width:1100px;margin:0 auto}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:40px;align-items:start}
.article-main{max-width:760px}
.article-main h1{font-size:30px;margin:6px 0 18px;line-height:1.25}
.update-time{display:inline-block;font-size:13px;color:var(--text-dim);
  background:var(--panel);border:1px solid var(--line);padding:3px 10px;border-radius:999px;margin-bottom:14px}
.article-main h2{font-size:22px;margin:34px 0 12px;padding-left:14px;
  border-left:4px solid var(--cyan)}
.article-main h3{font-size:18px;margin:24px 0 10px;color:#dbe7f5}
.article-main p{margin:12px 0;color:var(--text-soft)}
.article-main ul,.article-main ol{margin:12px 0;padding-left:22px;color:var(--text-soft)}
.article-main li{margin:6px 0}

/* 卡片块 */
.callout{border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin:18px 0;
  background:linear-gradient(180deg,var(--panel),var(--bg-2))}
.callout-summary{border-color:rgba(34,211,238,.4);background:linear-gradient(180deg,rgba(34,211,238,.08),var(--bg-2))}
.callout-summary p{color:#dff6fb;font-size:15.5px;margin:6px 0}
.callout-conclusion{border-color:rgba(91,140,255,.4)}
.callout-conclusion li{color:#eaf0ff}
.callout-case{border-color:rgba(52,211,153,.35)}
.callout-related{border-color:var(--line-strong)}
.callout-related ul{margin:8px 0}
.blockquote{border-left:3px solid var(--line-strong);padding:6px 16px;color:var(--text-soft);margin:16px 0}
.blockquote-conclusion{border-left-color:var(--accent)}

/* 表格 */
.table-wrap{overflow-x:auto;margin:18px 0;border:1px solid var(--line);border-radius:12px}
table.data{width:100%;border-collapse:collapse;font-size:14.5px;min-width:520px}
table.data th,table.data td{border-bottom:1px solid var(--line);padding:11px 14px;text-align:left}
table.data thead th{background:var(--panel-2);color:#cfe3f5;font-weight:600}
table.data tbody tr:hover{background:rgba(34,211,238,.04)}
table.data td{color:var(--text-soft)}

/* FAQ */
.faq-block{margin-top:34px}
.faq-title{font-size:20px;margin:0 0 14px;padding-left:14px;border-left:4px solid var(--cyan)}
.faq-item{border:1px solid var(--line);border-radius:10px;margin:10px 0;background:var(--panel);overflow:hidden}
.faq-item summary{cursor:pointer;padding:13px 16px;font-weight:600;color:#eaf2fb;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"+";color:var(--cyan);margin-right:10px;font-weight:800}
.faq-item[open] summary::before{content:"−"}
.faq-a{padding:0 16px 14px;color:var(--text-soft);margin:0}

/* TOC */
.toc-aside{position:sticky;top:84px;max-height:calc(100vh - 104px);overflow-y:auto}
.toc{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.toc-label{font-size:12px;color:var(--text-dim);margin:0 0 8px;text-transform:uppercase;letter-spacing:1px}
.toc-list{list-style:none;margin:0;padding:0;font-size:13.5px}
.toc-list li{margin:7px 0}
.toc-list a{color:var(--text-soft)}
.toc-list a:hover{color:var(--cyan)}

/* ── 产品 ── */
.product-title{font-size:28px;margin:6px 0 16px}
.param-block{margin:16px 0}
.param-title{font-size:20px;margin:0 0 12px;padding-left:14px;border-left:4px solid var(--cyan)}

/* ── 列表/分类 ── */
.list-layout{max-width:var(--maxw);margin:0 auto}
.list-grid{display:grid;grid-template-columns:220px minmax(0,1fr);gap:36px;align-items:start}
.cat-side{position:sticky;top:84px;background:var(--panel);border:1px solid var(--line);
  border-radius:12px;padding:16px}
.cat-side-title{font-size:12px;color:var(--text-dim);letter-spacing:1px;margin:0 0 10px;text-transform:uppercase}
.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:8px;color:var(--text-soft);font-size:14.5px}
.category-list a:hover{background:var(--panel-2);color:#fff}
.category-list li.active a{background:rgba(34,211,238,.12);color:var(--cyan);font-weight:600}
.list-title{font-size:26px;margin:0 0 8px}
.list-desc{color:var(--text-soft);margin:0 0 22px}
.card-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.card{display:block;background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:18px;transition:.18s;color:inherit}
.card:hover{border-color:var(--cyan);transform:translateY(-3px);box-shadow:0 16px 36px rgba(0,0,0,.4)}
.card-cat{display:inline-block;font-size:12px;color:var(--cyan);background:rgba(34,211,238,.1);
  padding:2px 9px;border-radius:999px;margin-bottom:10px}
.card-title{font-size:17px;margin:0 0 8px;color:#fff}
.card-desc{font-size:13.5px;color:var(--text-soft);margin:0;line-height:1.6}

/* ── 叶子页 ── */
.page-wrap{max-width:900px;margin:0 auto}
.page-title{font-size:28px;margin:6px 0 20px}
.page-main h2{font-size:21px;margin:30px 0 12px;padding-left:14px;border-left:4px solid var(--cyan)}
.page-main h3{font-size:17px;margin:22px 0 10px}
.page-main p,.page-main li{color:var(--text-soft)}
.page-main ul,.page-main ol{padding-left:22px}

/* ── 首页 ── */
.hero{position:relative;max-width:var(--maxw);margin:0 auto;padding:56px 24px 28px}
.hero-bg{position:absolute;inset:0;background:
  radial-gradient(900px 360px at 18% -10%,rgba(34,211,238,.16),transparent),
  radial-gradient(800px 360px at 90% 0%,rgba(91,140,255,.16),transparent);
  pointer-events:none}
.hero-inner{position:relative;max-width:880px}
.hero-eyebrow{color:var(--cyan);font-weight:600;letter-spacing:2px;font-size:13px;margin:0 0 10px}
.hero-title{font-size:40px;line-height:1.2;margin:0 0 16px;color:#fff}
.hero-lead{font-size:16.5px;color:var(--text-soft);max-width:760px}
.hero-actions{display:flex;gap:14px;margin:22px 0 18px;flex-wrap:wrap}
.btn{display:inline-block;padding:11px 22px;border-radius:10px;font-weight:600;font-size:14.5px;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--cyan),var(--accent));color:#04121f;border:0}
.btn-primary:hover{color:#04121f;filter:brightness(1.08)}
.btn-ghost{background:var(--panel);border:1px solid var(--line-strong);color:#fff}
.btn-ghost:hover{border-color:var(--cyan)}
.hero-tags{list-style:none;display:flex;flex-wrap:wrap;gap:10px;padding:0;margin:10px 0 0}
.hero-tags li{font-size:13px;color:var(--text-soft);background:var(--panel);
  border:1px solid var(--line);padding:6px 12px;border-radius:999px}

.section{max-width:var(--maxw);margin:0 auto;padding:34px 24px}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.section-title{font-size:24px;margin:0}
.section-sub{color:var(--text-dim);font-size:14px;margin:0}
.section-more{color:var(--cyan);font-size:14px}
.grid-3{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.feature-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px}
.feature-card h3{font-size:17px;margin:0 0 8px;color:#fff}
.feature-card p{color:var(--text-soft);font-size:14px;margin:0}
.section-compliance{margin-top:10px}
.compliance-list{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.compliance-list li{background:var(--panel);border:1px solid var(--line);border-left:4px solid var(--ok);
  border-radius:10px;padding:14px 16px;color:var(--text-soft);font-size:14.5px}

/* 归档 */
.archive-list{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.archive-list li{padding:10px 14px;background:var(--panel);border:1px solid var(--line);border-radius:10px}
.archive-cat{font-size:12px;color:var(--cyan);margin-left:8px}

/* 404 */
.notfound{text-align:center;padding-top:60px}
.notfound-lead{color:var(--text-soft)}

/* ── 页脚 ── */
.site-footer{border-top:1px solid var(--line);background:var(--bg-2);margin-top:40px}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:40px 24px 10px;
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px}
.footer-col h3{font-size:17px;margin:0 0 10px;color:#fff}
.footer-col h4{font-size:14px;margin:0 0 12px;color:var(--text-soft)}
.footer-col p{color:var(--text-dim);font-size:13.5px}
.footer-note{font-size:13px;max-width:340px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin:7px 0}
.footer-col a{color:var(--text-soft);font-size:13.5px}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{border-top:1px solid var(--line);max-width:var(--maxw);margin:0 auto;
  padding:16px 24px;color:var(--text-dim);font-size:12.5px}

/* ── 悬浮胶囊 ── */
.float-capsule{position:fixed;right:20px;top:50%;transform:translateY(-50%);z-index:60;
  display:flex;flex-direction:column;gap:12px}
.cap-btn{width:54px;height:54px;border-radius:999px;border:1px solid var(--line-strong);
  background:rgba(14,22,38,.9);backdrop-filter:blur(8px);color:var(--text);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  cursor:pointer;font-size:11px;transition:.18s}
.cap-btn:hover{border-color:var(--cyan);color:var(--cyan);box-shadow:0 0 22px rgba(34,211,238,.25)}
.cap-btn svg{display:block}

.wechat-modal{position:fixed;inset:0;z-index:90;display:none;align-items:center;justify-content:center}
.wechat-modal.open{display:flex}
.wechat-mask{position:absolute;inset:0;background:rgba(2,6,14,.72);backdrop-filter:blur(4px)}
.wechat-box{position:relative;background:#0b1220;border:1px solid var(--line-strong);
  border-radius:16px;padding:14px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.wechat-img{display:block;width:300px;height:500px;max-width:none;object-fit:contain;background:#0b1220;border-radius:10px}
.wechat-close{position:absolute;top:-14px;right:-14px;width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line-strong);background:var(--panel-2);color:#fff;font-size:20px;cursor:pointer}
.wechat-close:hover{border-color:var(--cyan);color:var(--cyan)}

/* ── 响应式 ── */
@media (max-width:980px){
  .article-grid{grid-template-columns:1fr;gap:0}
  .toc-aside{position:static;max-height:none;margin:22px 0}
  .list-grid{grid-template-columns:1fr;gap:18px}
  .cat-side{position:static}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .nav{position:fixed;top:var(--header-h);left:0;right:0;background:var(--panel-2);
    border-bottom:1px solid var(--line);max-height:0;overflow:hidden;transition:.2s}
  .nav.open{max-height:80vh;overflow:auto}
  .nav-list{flex-direction:column;align-items:stretch;padding:10px;gap:2px}
  .has-sub .submenu{position:static;opacity:1;visibility:visible;transform:none;
    box-shadow:none;border:0;background:transparent;padding:0 0 0 12px;display:none}
  .has-sub.open .submenu{display:block}
  .nav-burger{display:flex}
  .logo-sub{display:none}
  .hero-title{font-size:30px}
  .footer-inner{grid-template-columns:1fr}
  .float-capsule{right:12px}
  .container{padding:88px 16px 48px}
}