:root{
  --c-ink:#10263f;
  --c-sub:#65768a;
  --c-bg:#ffffff;
  --c-bg-soft:#f4f9fd;
  --c-navy:#0a1f3c;
  --c-cyan:#00b4d8;
  --c-blue:#0968eb;
  --c-line:#cbd5e1;
  --c-line-soft:#e2e8f0;
  --h2-inset:0px;
  --maxw:1280px;
  --header-h:64px;
  --radius:14px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;font-family:"PingFang SC","Microsoft YaHei",-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--c-ink);background:var(--c-bg);line-height:1.8;font-size:16px;
}
a{color:var(--c-blue);text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%;height:auto;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* ── 顶栏 ── */
.site-header{position:fixed;top:0;left:0;right:0;height:var(--header-h);background:rgba(10,31,60,.92);backdrop-filter:blur(8px);z-index:50;border-bottom:1px solid rgba(255,255,255,.08);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;}
.brand-mark{width:18px;height:18px;border-radius:5px;background:linear-gradient(135deg,var(--c-cyan),var(--c-blue));display:inline-block;}
.brand-text{white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:22px;}
.nav-menu>a{color:#dbe7f3;font-size:15px;}
.nav-menu>a:hover{color:#fff;text-decoration:none;}
.nav-toggle{display:none;background:transparent;border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:8px;padding:6px 14px;font-size:14px;cursor:pointer;}
.nav-cat{position:relative;}
.nav-cat>summary{list-style:none;cursor:pointer;color:#dbe7f3;font-size:15px;padding:6px 0;}
.nav-cat>summary::-webkit-details-marker{display:none;}
.nav-cat-list{position:absolute;top:100%;right:0;background:#0a1f3c;border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:8px;display:flex;flex-direction:column;min-width:140px;}
.nav-cat-list a{color:#dbe7f3;padding:6px 10px;border-radius:6px;font-size:14px;}
.nav-cat-list a:hover{background:rgba(0,180,216,.18);color:#fff;text-decoration:none;}

/* ── 页面包裹 ── */
.page-wrap{padding-top:var(--header-h);}
.article-layout,.list-layout,.page-wrap-inner{padding:28px 24px 60px;}
.layout-grid{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:40px;max-width:var(--maxw);margin:0 auto;align-items:start;}
.list-grid{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;}

/* ── 面包屑（与 H2 左缘对齐） ── */
.breadcrumb{margin:0 0 14px;font-size:13px;color:var(--c-sub);}
.breadcrumb-list{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:0;margin:0;}
.breadcrumb-item:not(:last-child)::after{content:"›";margin-left:6px;color:var(--c-line);}
.breadcrumb-item a{color:var(--c-sub);}
.breadcrumb-item span{color:var(--c-ink);}

/* ── 正文 ── */
.content-main{max-width:820px;}
.post-title{font-size:30px;line-height:1.35;margin:4px 0 18px;font-weight:700;}
.content-main h2{font-size:23px;margin:34px 0 12px;padding-left:var(--h2-inset);font-weight:700;color:var(--c-navy);}
.content-main h3{font-size:18px;margin:24px 0 10px;padding-left:var(--h2-inset);color:var(--c-navy);}
.content-main p{margin:12px 0;padding-left:var(--h2-inset);}
.content-main ul,.content-main ol{margin:12px 0;padding-left:calc(var(--h2-inset) + 22px);}
.content-main li{margin:6px 0;}
.content-main blockquote{margin:16px 0;padding:12px 18px;background:var(--c-bg-soft);border-left:4px solid var(--c-cyan);border-radius:0 8px 8px 0;color:var(--c-sub);padding-left:calc(var(--h2-inset) + 18px);}
.content-main blockquote strong{color:var(--c-navy);}
.content-main hr{border:none;border-top:1px solid var(--c-line-soft);margin:24px 0;}

/* 表格（覆盖全部正文表格，含 Markdown 裸 table） */
.content-main table,.page-main table,table.data{border-collapse:collapse;width:100%;margin:18px 0;padding-left:var(--h2-inset);font-size:15px;}
.content-main th,.page-main th,table.data th{background:var(--c-navy);color:#fff;text-align:left;padding:10px 12px;border:1px solid var(--c-navy);}
.content-main td,.page-main td,table.data td{border:1px solid var(--c-line);padding:9px 12px;}
.content-main tbody tr:nth-child(even),table.data tbody tr:nth-child(even){background:var(--c-bg-soft);}

/* 时间 */
.post-update{font-size:13px;color:var(--c-sub);}

/* 案例 callout */
.case-study{margin:22px 0;padding:14px 18px;background:linear-gradient(135deg,#eaf7fb,#f4f9fd);border:1px solid #bfe6f1;border-radius:12px;}
.case-study-h{font-size:16px;margin:0 0 6px;color:var(--c-blue);}
.case-study-p{margin:0;font-size:14px;color:var(--c-sub);}

/* FAQ */
.faq-block{margin:28px 0;padding-left:var(--h2-inset);}
.faq-title{font-size:21px;color:var(--c-navy);margin:0 0 10px;}
.faq-item{border:1px solid var(--c-line);border-radius:10px;margin:8px 0;background:#fff;overflow:hidden;}
.faq-item>summary{cursor:pointer;padding:12px 16px;font-weight:600;color:var(--c-navy);list-style:none;}
.faq-item>summary::-webkit-details-marker{display:none;}
.faq-item>summary::before{content:"+";color:var(--c-cyan);font-weight:700;margin-right:8px;}
.faq-item[open]>summary::before{content:"−";}
.faq-a{margin:0;padding:0 16px 14px;color:var(--c-sub);font-size:15px;}

/* 相关阅读 */
.related{margin-top:34px;padding-left:var(--h2-inset);border-top:1px solid var(--c-line-soft);padding-top:18px;}
.related-title{font-size:19px;color:var(--c-navy);margin:0 0 10px;}
.related-list{list-style:none;padding:0;margin:0;}
.related-list li{margin:8px 0;font-size:15px;}

/* TOC */
.toc-aside{position:sticky;top:calc(var(--header-h) + 16px);max-height:calc(100vh - var(--header-h) - 32px);overflow-y:auto;}
.toc-panel{background:var(--c-bg-soft);border:1px solid var(--c-line-soft);border-radius:12px;padding:12px 14px;}
.toc-panel>summary{cursor:pointer;font-weight:700;color:var(--c-navy);list-style:none;padding-left:0;}
.toc-panel>summary::-webkit-details-marker{display:none;}
.toc-panel>summary::after{content:"▾";float:right;color:var(--c-cyan);}
.toc-list{list-style:none;margin:10px 0 0;padding:0;}
.toc-item a{display:block;font-size:13px;color:var(--c-sub);padding:4px 0;}
.toc-item a:hover{color:var(--c-blue);text-decoration:none;}
.toc-level-3 a{padding-left:14px;}

/* 列表 / 分类 */
.cat-side{position:sticky;top:calc(var(--header-h) + 16px);}
.cat-panel{background:var(--c-bg-soft);border:1px solid var(--c-line-soft);border-radius:12px;padding:12px 14px;}
.cat-panel>summary{cursor:pointer;font-weight:700;color:var(--c-navy);list-style:none;}
.cat-panel>summary::-webkit-details-marker{display:none;}
.cat-panel>summary::after{content:"▾";float:right;color:var(--c-cyan);}
.category-list{list-style:none;margin:10px 0 0;padding:0;}
.category-item a{display:block;padding:8px 12px;border-radius:8px;color:var(--c-ink);font-size:15px;}
.category-item a:hover{background:#fff;text-decoration:none;}
.category-item.active a{background:var(--c-blue);color:#fff;}
.list-title{font-size:28px;color:var(--c-navy);margin:0 0 8px;}
.list-intro{color:var(--c-sub);margin:0 0 22px;}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;}
.content-card{border:1px solid var(--c-line-soft);border-radius:var(--radius);padding:20px;background:#fff;transition:box-shadow .2s,transform .2s;}
.content-card:hover{box-shadow:0 8px 24px rgba(10,31,60,.1);transform:translateY(-2px);}
.card-title{font-size:18px;margin:0 0 8px;font-weight:700;}
.card-title a{color:var(--c-navy);}
.card-desc{color:var(--c-sub);font-size:14px;margin:0 0 8px;}
.card-meta{color:var(--c-sub);font-size:12px;margin:0;}

/* 分页 */
.pagination{margin-top:28px;display:flex;gap:12px;}
.page-prev,.page-next{padding:8px 16px;border:1px solid var(--c-line);border-radius:8px;font-size:14px;color:var(--c-blue);}
.page-prev.disabled,.page-next.disabled{color:var(--c-line);border-color:var(--c-line-soft);}

/* 页脚 */
.site-footer{background:var(--c-navy);color:#cdd9e6;padding:40px 0 18px;margin-top:40px;}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.footer-h{color:#fff;font-size:18px;margin:0 0 10px;}
.footer-h3{color:#9fb3c8;font-size:14px;margin:0 0 10px;}
.footer-desc{font-size:14px;line-height:1.7;color:#aebfd0;}
.footer-links{list-style:none;padding:0;margin:0;}
.footer-links li{margin:6px 0;}
.footer-links a{color:#cdd9e6;font-size:14px;}
.footer-bottom{max-width:var(--maxw);margin:24px auto 0;padding:16px 24px 0;border-top:1px solid rgba(255,255,255,.1);}
.footer-bottom p{font-size:12px;color:#8aa0b6;margin:0;}

/* ── 悬浮胶囊 ── */
.float-capsule{position:fixed;right:18px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:10px;z-index:40;}
.cap-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;width:56px;height:56px;border:none;border-radius:16px;cursor:pointer;color:#fff;font-size:12px;background:linear-gradient(135deg,var(--c-cyan),var(--c-blue));box-shadow:0 6px 18px rgba(9,104,235,.35);transition:transform .2s;}
.cap-btn:hover{transform:scale(1.06);text-decoration:none;}
.cap-ico{font-size:18px;font-weight:700;line-height:1;}
.cap-txt{margin-top:3px;}

/* ── 微信名片弹层 ── */
.wechat-modal[hidden]{display:none;}
.wechat-modal{position:fixed;inset:0;z-index:60;display:flex;align-items:center;justify-content:center;}
.wechat-modal-backdrop{position:absolute;inset:0;background:rgba(10,31,60,.55);}
.wechat-modal-box{position:relative;background:#fff;border-radius:12px;padding:10px;box-shadow:0 20px 60px rgba(0,0,0,.3);}
.wechat-card{display:block;width:300px;height:500px;object-fit:contain;border-radius:6px;}
.wechat-modal-close{position:absolute;top:-14px;right:-14px;width:32px;height:32px;border-radius:50%;border:none;background:var(--c-navy);color:#fff;font-size:20px;cursor:pointer;line-height:1;}

/* 页面（about 等）卡片内边距 48px */
.page-main{max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--radius);padding:48px;box-shadow:0 8px 30px rgba(10,31,60,.06);}
.page-title{font-size:30px;color:var(--c-navy);margin:0 0 20px;}

/* ── 首页 ── */
.hero{background:linear-gradient(135deg,var(--c-navy),#0d2c54);color:#fff;padding:70px 0 60px;}
.hero-inner{display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center;}
.hero-eyebrow{color:var(--c-cyan);font-weight:600;letter-spacing:1px;margin:0 0 12px;font-size:14px;}
.hero-title{font-size:40px;line-height:1.3;margin:0 0 16px;font-weight:700;}
.hero-sub{color:#cdd9e6;font-size:16px;margin:0 0 24px;max-width:560px;}
.hero-actions{display:flex;gap:14px;}
.btn-primary{display:inline-block;background:linear-gradient(135deg,var(--c-cyan),var(--c-blue));color:#fff;padding:12px 26px;border-radius:10px;font-weight:600;}
.btn-primary:hover{text-decoration:none;opacity:.92;}
.btn-ghost{display:inline-block;border:1px solid rgba(255,255,255,.4);color:#fff;padding:12px 26px;border-radius:10px;font-weight:600;}
.btn-ghost:hover{text-decoration:none;background:rgba(255,255,255,.1);}
.hero-svg{width:100%;max-width:320px;}
.home-scenarios,.home-products,.home-articles{padding:54px 0;}
.section-title{font-size:26px;color:var(--c-navy);margin:0 0 22px;text-align:center;}
.scenario-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;}
.scenario-card{border:1px solid var(--c-line-soft);border-radius:var(--radius);padding:22px;background:var(--c-bg-soft);}
.scenario-card h3{color:var(--c-navy);margin:0 0 8px;font-size:17px;}
.scenario-card p{color:var(--c-sub);font-size:14px;margin:0;}
.home-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:22px;}
.home-more{color:var(--c-blue);font-size:14px;}
.home-cta{padding:30px 0 60px;}
.cta-box{background:linear-gradient(135deg,#eaf7fb,#f4f9fd);border:1px solid #bfe6f1;border-radius:18px;padding:36px;text-align:center;}
.cta-title{font-size:22px;color:var(--c-navy);margin:0 0 10px;}
.cta-sub{color:var(--c-sub);margin:0 0 20px;}

/* ── 响应式 ── */
@media (max-width:1024px){
  .layout-grid,.list-grid{grid-template-columns:1fr;gap:20px;}
  .toc-aside,.cat-side{position:static;max-height:none;}
  .nav-toggle{display:block;}
  .nav-menu{display:none;position:absolute;top:var(--header-h);left:0;right:0;flex-direction:column;background:var(--c-navy);padding:16px 24px;gap:14px;align-items:flex-start;}
  .nav-menu.open{display:flex;}
  .nav-cat-list{position:static;background:transparent;border:none;padding:0;}
  .hero-inner{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr;}
  /* 折叠面板在手机端默认收起由 JS 控制；此处保证不隐藏入口 */
}
@media (max-width:640px){
  .hero-title{font-size:30px;}
  .post-title{font-size:24px;}
  .page-main{padding:24px;}
  .float-capsule{right:10px;}
}