:root{
  --lc-navy:#0a1b33;
  --lc-navy2:#0f2a4d;
  --lc-cyan:#19c8e0;
  --lc-accent:#2f7bff;
  --lc-ink:#16243a;
  --lc-muted:#5a6b82;
  --lc-bg:#eef3f8;
  --lc-card:#ffffff;
  --lc-line:#d9e3ee;
  --lc-radius:14px;
  --lc-h2-inset:0px;
  --lc-shadow:0 8px 30px rgba(10,27,51,.08);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body.lc-body{
  margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--lc-ink);background:var(--lc-bg);line-height:1.75;font-size:16px;
}
a{color:var(--lc-accent);text-decoration:none;}
a:hover{text-decoration:underline;}

/* 顶部固定导航 */
.lc-header{position:sticky;top:0;z-index:50;background:rgba(10,27,51,.92);backdrop-filter:blur(8px);border-bottom:1px solid rgba(255,255,255,.08);}
.lc-header-inner{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:18px;padding:0 24px;height:64px;}
.lc-brand{color:#fff;font-weight:800;font-size:19px;letter-spacing:.5px;white-space:nowrap;}
.lc-nav{display:flex;gap:22px;margin-left:auto;}
.lc-nav a{color:#cfe0f2;font-size:15px;font-weight:500;}
.lc-nav a:hover{color:var(--lc-cyan);text-decoration:none;}
.lc-nav-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.3);color:#fff;font-size:20px;border-radius:8px;padding:4px 10px;cursor:pointer;}

/* 容器与面包屑对齐 */
.lc-container{max-width:1180px;margin:0 auto;padding:0 24px;--h2-inset:0px;}
.lc-crumbs{font-size:13.5px;color:var(--lc-muted);padding:18px 0 6px;margin:0;}
.lc-crumbs-ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:2px;margin:0;padding:0;}
.lc-crumbs-li{display:inline-flex;align-items:center;}
.lc-crumbs-li a{color:var(--lc-muted);}
.lc-crumbs-li a:hover{color:var(--lc-accent);}
.lc-crumbs-sep{margin:0 8px;color:#9fb0c4;}

/* 文章/产品两栏 */
.lc-article-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:40px;padding-bottom:50px;}
.lc-main{min-width:0;}
.lc-h1{font-size:30px;line-height:1.3;margin:6px 0 18px;color:var(--lc-navy);font-weight:800;}
.lc-body{font-size:16.5px;color:var(--lc-ink);}
.lc-body h2{font-size:23px;color:var(--lc-navy);margin:34px 0 12px;padding-left:0;border-left:4px solid var(--lc-cyan);padding:4px 0 4px 14px;}
.lc-body h3{font-size:19px;color:var(--lc-navy2);margin:24px 0 10px;}
.lc-body p{margin:0 0 14px;}
.lc-body ul,.lc-body ol{margin:0 0 14px;padding-left:24px;}
.lc-body li{margin:6px 0;}
.lc-body blockquote{margin:16px 0;padding:12px 16px;background:#e8f6fa;border-left:4px solid var(--lc-cyan);border-radius:8px;color:#13485a;}
.lc-body hr{border:none;border-top:1px solid var(--lc-line);margin:24px 0;}
.lc-body strong{color:var(--lc-navy);}

/* 摘要块（正文首个 blockquote） */
.lc-body > blockquote:first-child{background:linear-gradient(180deg,#f3fafe,#ffffff);border:1px solid #d4ecf5;border-radius:12px;padding:16px 18px;color:#0f3a4a;font-weight:500;font-size:16.5px;}

/* 表格 */
table.data{width:100%;border-collapse:collapse;margin:16px 0;font-size:15px;background:#fff;border:1px solid var(--lc-line);border-radius:10px;overflow:hidden;}
table.data th{background:var(--lc-navy);color:#fff;text-align:left;padding:10px 12px;font-weight:600;}
table.data td{padding:9px 12px;border-top:1px solid var(--lc-line);}
table.data tbody tr:nth-child(even){background:#f6fafd;}

/* FAQ 裸 details */
details{margin:12px 0;border:1px solid var(--lc-line);border-radius:10px;background:#fff;overflow:hidden;}
details summary{cursor:pointer;padding:12px 16px;font-weight:700;color:var(--lc-navy);background:#f2f8fc;list-style:none;}
details summary::-webkit-details-marker{display:none;}
details summary:before{content:"+";display:inline-block;width:18px;color:var(--lc-accent);font-weight:800;}
details[open] summary:before{content:"−";}
details p{margin:0;padding:12px 16px;}

/* 标签 */
.tag-text{display:inline-block;background:#eaf1fb;color:var(--lc-accent);border-radius:6px;padding:2px 9px;font-size:13px;margin:2px 4px 2px 0;}

/* TOC */
.lc-toc-aside{align-self:start;}
.lc-toc-inner{position:sticky;top:84px;max-height:calc(100vh - 104px);overflow-y:auto;background:var(--lc-card);border:1px solid var(--lc-line);border-radius:12px;padding:14px 16px;box-shadow:var(--lc-shadow);}
.lc-toc-title{font-size:13px;color:var(--lc-muted);margin:0 0 8px;font-weight:700;letter-spacing:.5px;}
.lc-toc-list{list-style:none;margin:0;padding:0;font-size:14px;}
.lc-toc-list li{margin:4px 0;}
.lc-toc-list li.lv3{padding-left:14px;}
.lc-toc-list a{color:var(--lc-muted);}
.lc-toc-list a:hover{color:var(--lc-accent);}

/* 首页 */
.lc-hero{background:radial-gradient(1200px 400px at 70% -10%,rgba(25,200,224,.25),transparent),linear-gradient(135deg,var(--lc-navy),var(--lc-navy2));color:#fff;padding:64px 24px 56px;}
.lc-hero-inner{max-width:1180px;margin:0 auto;}
.lc-hero-title{font-size:40px;font-weight:900;margin:0 0 14px;letter-spacing:.5px;}
.lc-hero-sub{font-size:18px;color:#cfe0f2;max-width:760px;margin:0 0 26px;line-height:1.7;}
.lc-hero-cta{display:flex;gap:14px;flex-wrap:wrap;}
.lc-btn{padding:12px 22px;border-radius:10px;font-weight:700;font-size:15px;display:inline-block;}
.lc-btn-primary{background:var(--lc-cyan);color:#04222b;}
.lc-btn-ghost{border:1px solid rgba(255,255,255,.5);color:#fff;}
.lc-btn:hover{text-decoration:none;opacity:.92;}
.lc-section{max-width:1180px;margin:0 auto;padding:38px 24px;}
.lc-section-title{font-size:24px;color:var(--lc-navy);margin:0 0 18px;border-left:4px solid var(--lc-cyan);padding-left:12px;}
.lc-biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.lc-biz-card{background:var(--lc-card);border:1px solid var(--lc-line);border-radius:var(--lc-radius);padding:20px;box-shadow:var(--lc-shadow);}
.lc-biz-name{margin:0 0 8px;color:var(--lc-accent);font-size:18px;}
.lc-biz-desc{margin:0;color:var(--lc-muted);font-size:14.5px;}
.lc-cat-grid{display:flex;flex-wrap:wrap;gap:12px;}
.lc-cat-chip{background:var(--lc-card);border:1px solid var(--lc-line);border-radius:30px;padding:9px 18px;color:var(--lc-navy);font-weight:600;box-shadow:var(--lc-shadow);}
.lc-cat-chip:hover{border-color:var(--lc-cyan);text-decoration:none;color:var(--lc-accent);}
.lc-feat-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
.lc-feat-item{background:var(--lc-card);border:1px solid var(--lc-line);border-radius:12px;padding:16px;box-shadow:var(--lc-shadow);}
.lc-feat-item a{font-weight:700;font-size:16px;color:var(--lc-navy);display:block;margin-bottom:6px;}
.lc-feat-item span{color:var(--lc-muted);font-size:14px;}

/* 列表页 */
.lc-list-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:36px;padding-bottom:50px;}
.lc-cat-side{align-self:start;position:sticky;top:84px;}
.lc-cat-side-title{font-size:14px;color:var(--lc-muted);font-weight:700;margin:0 0 10px;}
ul.category-list{list-style:none;margin:0;padding:0;border:1px solid var(--lc-line);border-radius:12px;overflow:hidden;background:#fff;box-shadow:var(--lc-shadow);}
ul.category-list li{border-bottom:1px solid var(--lc-line);}
ul.category-list li:last-child{border-bottom:none;}
ul.category-list a{display:block;padding:12px 16px;color:var(--lc-ink);font-weight:600;}
ul.category-list li.active a{background:var(--lc-navy);color:#fff;}
ul.category-list a:hover{background:#eaf1fb;text-decoration:none;color:var(--lc-accent);}
.lc-cat-content{min-width:0;}
.lc-list-desc{color:var(--lc-muted);margin:4px 0 18px;}
.lc-list-items{list-style:none;margin:0;padding:0;}
.lc-list-item{background:#fff;border:1px solid var(--lc-line);border-radius:12px;padding:16px 18px;margin-bottom:14px;box-shadow:var(--lc-shadow);}
.lc-list-item-title{font-weight:700;font-size:17px;color:var(--lc-navy);}
.lc-list-item-desc{margin:8px 0 0;color:var(--lc-muted);font-size:14.5px;}

/* 归档 */
.lc-archive-cat{font-size:18px;color:var(--lc-accent);margin:22px 0 8px;}
.lc-archive-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:8px;}
.lc-archive-list li{background:#fff;border:1px solid var(--lc-line);border-radius:8px;padding:10px 14px;}
.lc-archive-list a{color:var(--lc-navy);font-weight:600;}

/* 页面布局 */
.lc-page-layout{padding-bottom:50px;}
.lc-page-main{max-width:880px;}

/* 页脚 */
.lc-footer{background:var(--lc-navy);color:#cfe0f2;margin-top:30px;}
.lc-footer-inner{max-width:1180px;margin:0 auto;padding:34px 24px;}
.lc-footer-brand{font-weight:800;font-size:18px;color:#fff;margin-bottom:8px;}
.lc-footer-desc{color:#9fb6d0;max-width:720px;margin:0 0 14px;}
.lc-footer-nav{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:14px;}
.lc-footer-nav a{color:#cfe0f2;}
.lc-footer-copy{color:#7c93b0;font-size:13px;margin:0;}

/* 悬浮胶囊 */
.lc-capsule{position:fixed;right:18px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:12px;z-index:60;}
.lc-cap-btn{width:54px;height:54px;border-radius:30px;border:none;background:linear-gradient(135deg,var(--lc-cyan),var(--lc-accent));color:#fff;font-size:20px;cursor:pointer;box-shadow:0 6px 18px rgba(47,123,255,.4);display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1;}
.lc-cap-btn span{font-size:11px;margin-top:2px;}
.lc-cap-btn:hover{opacity:.92;}

/* 名片弹窗 */
.lc-modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;z-index:80;}
.lc-modal-show{display:flex;}
.lc-modal-mask{position:absolute;inset:0;background:rgba(10,27,51,.6);}
.lc-modal-card{position:relative;background:#fff;border-radius:12px;padding:14px;box-shadow:0 20px 60px rgba(0,0,0,.3);}
.lc-modal-card img{display:block;width:300px;height:500px;object-fit:contain;}
.lc-modal-tip{margin:0 0 8px;text-align:center;color:var(--lc-navy);font-weight:600;font-size:14px;}
.lc-modal-close{position:absolute;top:-12px;right:-12px;width:30px;height:30px;border-radius:50%;border:none;background:var(--lc-navy);color:#fff;font-size:18px;cursor:pointer;}

/* 响应式 */
@media (max-width:900px){
  .lc-nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--lc-navy);padding:10px 24px;gap:6px;}
  .lc-nav.lc-nav-open{display:flex;}
  .lc-nav-toggle{display:block;}
  .lc-article-layout{grid-template-columns:1fr;}
  .lc-toc-aside{display:none;}
  .lc-list-layout{grid-template-columns:1fr;}
  .lc-cat-side{position:static;}
  ul.category-list{max-height:0;overflow:hidden;transition:max-height .2s;border:none;box-shadow:none;background:transparent;}
  .lc-cat-side.lc-cat-collapsed ul.category-list{max-height:none;border:1px solid var(--lc-line);background:#fff;box-shadow:var(--lc-shadow);}
  .lc-biz-grid{grid-template-columns:repeat(2,1fr);}
  .lc-feat-list,.lc-archive-list{grid-template-columns:1fr;}
  .lc-hero-title{font-size:30px;}
}
@media (max-width:560px){
  .lc-biz-grid{grid-template-columns:1fr;}
  .lc-h1{font-size:25px;}
}