:root{
  --bg:#0A1020;
  --bg-2:#111A30;
  --bg-3:#16203A;
  --line:#243049;
  --text:#E6EDF6;
  --muted:#9FB0C9;
  --primary:#2F9BFF;
  --accent:#19E0C8;
  --gold:#E0B341;
  --radius:14px;
  --nav-h:64px;
  --maxw:1180px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"Segoe UI","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;}
a:hover{color:var(--accent);}
img{max-width:100%;}
h1,h2,h3,h4{color:#fff;line-height:1.35;}

/* ===== 导航 ===== */
.lwc-nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:50;
  background:rgba(10,16,32,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.lwc-nav-inner{max-width:var(--maxw);margin:0 auto;height:100%;display:flex;align-items:center;
  justify-content:space-between;padding:0 24px;}
.lwc-logo{font-size:20px;font-weight:800;color:#fff;letter-spacing:.5px;}
.lwc-logo span{color:var(--gold);}
.lwc-nav-menu{display:flex;gap:26px;}
.lwc-nav-menu a{color:var(--muted);font-size:15px;font-weight:600;transition:color .2s;}
.lwc-nav-menu a:hover{color:var(--accent);}
.lwc-nav-toggle{display:none;flex-direction:column;gap:5px;width:40px;height:40px;
  background:none;border:0;cursor:pointer;justify-content:center;}
.lwc-nav-toggle span{display:block;height:2px;width:24px;background:var(--text);border-radius:2px;transition:.2s;}

/* ===== 主容器 ===== */
.lwc-main{padding-top:var(--nav-h);min-height:70vh;}
.lwc-container{max-width:var(--maxw);margin:0 auto;padding:28px 24px 60px;}
.lwc-ctn-page .lwc-page-card{background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius);padding:36px 48px;margin-top:8px;}

/* ===== 面包屑 ===== */
.lwc-breadcrumb{font-size:13px;color:var(--muted);margin:6px 0 22px;}
.lwc-crumb-list{list-style:none;display:flex;flex-wrap:wrap;align-items:center;padding:0;margin:0;gap:6px;}
.lwc-crumb-list a{color:var(--muted);}
.lwc-crumb-list a:hover{color:var(--accent);}
.lwc-crumb-sep{color:var(--line);}
.lwc-crumb-list [aria-current]{color:var(--text);font-weight:600;}

/* ===== 详情页栅格 ===== */
.lwc-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:36px;align-items:start;}
.lwc-content-main{min-width:0;}
.lwc-toc-aside{position:sticky;top:calc(var(--nav-h) + 16px);max-height:calc(100vh - var(--nav-h) - 32px);overflow:auto;}

/* ===== 折叠面板（原生 details） ===== */
.lwc-toc-panel,.lwc-cat-panel{background:var(--bg-2);border:1px solid var(--line);
  border-radius:12px;padding:0;overflow:hidden;}
.lwc-toc-summary,.lwc-cat-summary{cursor:pointer;padding:14px 16px;font-weight:700;color:#fff;
  list-style:none;display:flex;align-items:center;justify-content:space-between;user-select:none;}
.lwc-toc-summary::-webkit-details-marker{display:none;}
.lwc-toc-summary::after,.lwc-cat-summary::after{content:"▾";color:var(--accent);transition:transform .2s;font-size:13px;}
.lwc-toc-panel[open] .lwc-toc-summary::after,.lwc-cat-panel[open] .lwc-cat-summary::after{transform:rotate(180deg);}
.lwc-toc-list,.lwc-category-list{list-style:none;margin:0;padding:0 16px 14px;}
.lwc-toc-li{margin:6px 0;font-size:14px;}
.lwc-toc-li a{color:var(--muted);}
.lwc-toc-li a:hover{color:var(--accent);}
.lwc-toc-h3{padding-left:14px;font-size:13px;}
.lwc-category-list{padding:0 8px 12px;}
.lwc-cat-li{margin:2px 0;}
.lwc-cat-li a{display:block;padding:9px 12px;border-radius:8px;color:var(--muted);font-size:14px;font-weight:600;}
.lwc-cat-li a:hover{background:var(--bg-3);color:var(--accent);}
.lwc-cat-li.active a{background:linear-gradient(90deg,rgba(47,155,255,.18),transparent);color:var(--primary);border-left:3px solid var(--primary);}

/* ===== 正文排版 ===== */
.lwc-h1{font-size:30px;margin:0 0 18px;font-weight:800;}
.lwc-content-main h2,.lwc-page-main h2{font-size:22px;margin:34px 0 14px;padding-bottom:8px;
  border-bottom:1px solid var(--line);scroll-margin-top:calc(var(--nav-h) + 16px);}
.lwc-content-main h3,.lwc-page-main h3{font-size:18px;margin:22px 0 10px;color:var(--accent);}
.lwc-content-main p,.lwc-page-main p{margin:12px 0;color:#D7E0EE;}
.lwc-content-main ul,.lwc-content-main ol,.lwc-page-main ul,.lwc-page-main ol{margin:12px 0;padding-left:22px;}
.lwc-content-main li,.lwc-page-main li{margin:7px 0;}
.lwc-content-main blockquote,.lwc-page-main blockquote{margin:18px 0;padding:14px 18px;
  background:var(--bg-2);border-left:4px solid var(--primary);border-radius:0 10px 10px 0;color:var(--muted);}
.lwc-content-main strong,.lwc-page-main strong{color:#fff;}
.lwc-keywords{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0;}
.lwc-kw{background:var(--bg-3);border:1px solid var(--line);border-radius:999px;padding:3px 12px;font-size:13px;color:var(--accent);}
.lwc-update{font-size:13px;color:var(--muted);margin:8px 0 4px;}

/* ===== 表格（M26 覆盖全部正文 table） ===== */
.lwc-content-main table,table.lwc-spec{width:100%;border-collapse:collapse;margin:18px 0;
  font-size:14px;border:1px solid #cbd5e1;background:var(--bg-2);}
.lwc-content-main th,table.lwc-spec th{background:var(--primary);color:#fff;text-align:left;
  padding:10px 12px;font-weight:700;border:1px solid #cbd5e1;}
.lwc-content-main td,table.lwc-spec td{padding:9px 12px;border:1px solid #cbd5e1;color:#D7E0EE;}
.lwc-content-main tbody tr:nth-child(even),table.lwc-spec tbody tr:nth-child(even){background:rgba(255,255,255,.03);}

/* ===== FAQ ===== */
.lwc-faq{margin:34px 0 10px;}
.lwc-faq-title{font-size:22px;margin:0 0 14px;}
.lwc-faq-item{background:var(--bg-2);border:1px solid var(--line);border-radius:10px;margin:10px 0;overflow:hidden;}
.lwc-faq-item summary{cursor:pointer;padding:14px 16px;font-weight:700;color:#fff;list-style:none;
  display:flex;align-items:center;justify-content:space-between;}
.lwc-faq-item summary::-webkit-details-marker{display:none;}
.lwc-faq-item summary::after{content:"▾";color:var(--accent);transition:transform .2s;}
.lwc-faq-item[open] summary::after{transform:rotate(180deg);}
.lwc-faq-a{padding:0 16px 14px;color:#D7E0EE;}

/* ===== 相关阅读 ===== */
.lwc-related{margin:30px 0 0;border-top:1px solid var(--line);padding-top:18px;}
.lwc-rel-title{font-size:20px;margin:0 0 12px;}
.lwc-rel-list{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.lwc-rel-list li{background:var(--bg-2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;}
.lwc-rel-list a{font-weight:600;}

/* ===== 列表页 ===== */
.lwc-list-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:32px;align-items:start;}
.lwc-cat-side{position:sticky;top:calc(var(--nav-h) + 16px);}
.lwc-cat-content{min-width:0;}
.lwc-list-intro{color:var(--muted);margin:6px 0 22px;}
.lwc-item-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px;}
.lwc-item{display:block;background:var(--bg-2);border:1px solid var(--line);border-radius:12px;
  padding:18px 20px;transition:transform .2s,border-color .2s;}
.lwc-item:hover{transform:translateY(-3px);border-color:var(--primary);}
.lwc-item-title{font-size:17px;margin:0 0 8px;color:#fff;}
.lwc-item-desc{font-size:14px;color:var(--muted);margin:0 0 10px;}
.lwc-item-meta{font-size:12px;color:var(--accent);}
.lwc-pagination{margin:26px 0;display:flex;gap:14px;align-items:center;color:var(--muted);}
.lwc-pagination a{font-weight:700;}
.lwc-list-faq{margin-top:30px;}

/* ===== 悬浮胶囊 ===== */
.lwc-capsule{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:60;
  display:flex;flex-direction:column;gap:10px;padding:10px 8px;border-radius:999px;
  background:linear-gradient(160deg,var(--gold),#b9862c);box-shadow:0 8px 28px rgba(0,0,0,.45);}
.lwc-cap-btn{width:52px;height:52px;border:0;border-radius:50%;background:rgba(10,16,32,.18);
  color:#10131a;display:flex;flex-direction:column;align-items:center;justify-content:center;
  cursor:pointer;font-weight:800;font-size:11px;transition:background .2s;}
.lwc-cap-btn:hover{background:rgba(10,16,32,.38);}
.lwc-cap-ico{font-size:18px;line-height:1;}

/* ===== 名片弹层 ===== */
.lwc-card-overlay{position:fixed;inset:0;z-index:70;background:rgba(5,8,16,.78);
  display:flex;align-items:center;justify-content:center;}
.lwc-card-overlay[hidden]{display:none;}
.lwc-card-box{position:relative;}
.lwc-card-box img{border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,.6);}
.lwc-card-close{position:absolute;top:-14px;right:-14px;width:36px;height:36px;border-radius:50%;
  border:0;background:var(--gold);color:#10131a;font-size:22px;cursor:pointer;line-height:1;}

/* ===== 页脚 ===== */
.lwc-footer{background:var(--bg-2);border-top:1px solid var(--line);margin-top:40px;}
.lwc-footer-inner{max-width:var(--maxw);margin:0 auto;padding:40px 24px;display:grid;
  grid-template-columns:2.2fr 1fr 1fr 1fr;gap:28px;}
.lwc-footer-logo{font-size:20px;font-weight:800;color:#fff;}
.lwc-footer-logo span{color:var(--gold);}
.lwc-footer-desc{color:var(--muted);font-size:14px;margin:12px 0 0;max-width:420px;}
.lwc-footer-col h4{font-size:15px;margin:0 0 12px;color:#fff;}
.lwc-footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:8px;}
.lwc-footer-col a{color:var(--muted);font-size:14px;}
.lwc-footer-col a:hover{color:var(--accent);}
.lwc-footer-bottom{max-width:var(--maxw);margin:0 auto;padding:16px 24px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:var(--muted);font-size:13px;}

/* ===== 首页 ===== */
.lwc-hero{position:relative;overflow:hidden;border-radius:var(--radius);
  background:linear-gradient(135deg,#0c1730,#13243f 60%,#0a1020);border:1px solid var(--line);
  padding:64px 40px;margin-bottom:34px;}
.lwc-hero-bg{position:absolute;inset:0;opacity:.9;}
.lwc-hero-svg{width:100%;height:100%;}
.lwc-hero-inner{position:relative;max-width:760px;}
.lwc-hero-kicker{color:var(--gold);font-weight:700;letter-spacing:3px;margin:0 0 10px;font-size:14px;}
.lwc-hero-title{font-size:40px;margin:0 0 16px;font-weight:800;}
.lwc-hero-sub{color:#C7D3E6;font-size:17px;margin:0 0 26px;}
.lwc-hero-cta{display:flex;gap:16px;flex-wrap:wrap;}
.lwc-btn{display:inline-block;padding:12px 26px;border-radius:999px;font-weight:700;font-size:15px;transition:.2s;}
.lwc-btn-primary{background:linear-gradient(120deg,var(--primary),var(--accent));color:#06121f;}
.lwc-btn-primary:hover{filter:brightness(1.08);color:#06121f;}
.lwc-btn-ghost{border:1px solid var(--line);color:#fff;background:transparent;}
.lwc-btn-ghost:hover{border-color:var(--accent);color:var(--accent);}
.lwc-sec{margin:40px 0;}
.lwc-sec-title{font-size:24px;margin:0 0 20px;padding-left:12px;border-left:4px solid var(--gold);}
.lwc-core-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px;}
.lwc-core-card{background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:22px;transition:.2s;}
.lwc-core-card:hover{border-color:var(--primary);transform:translateY(-3px);}
.lwc-core-title{font-size:18px;margin:0 0 10px;color:#fff;}
.lwc-core-desc{color:var(--muted);font-size:14px;margin:0;}
.lwc-kw-cloud{list-style:none;display:flex;flex-wrap:wrap;gap:10px;padding:0;margin:0;}
.lwc-kw-chip{background:var(--bg-3);border:1px solid var(--line);border-radius:999px;padding:7px 16px;font-size:14px;color:var(--accent);}
.lwc-baseline-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;}
.lwc-baseline-item{background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:20px;text-align:center;}
.lwc-baseline-num{display:block;font-size:28px;font-weight:800;color:var(--gold);}
.lwc-baseline-label{display:block;color:var(--muted);font-size:14px;margin-top:6px;}
.lwc-baseline-note{color:var(--muted);font-size:14px;margin:16px 0 0;}
.lwc-scene-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;}
.lwc-scene-card{background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:18px;}
.lwc-scene-title{font-size:16px;margin:0 0 8px;color:#fff;}
.lwc-scene-desc{color:var(--muted);font-size:14px;margin:0;}
.lwc-latest{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.lwc-latest li{display:flex;justify-content:space-between;align-items:center;background:var(--bg-2);
  border:1px solid var(--line);border-radius:10px;padding:12px 16px;}
.lwc-latest a{font-weight:600;}
.lwc-latest-cat{font-size:12px;color:var(--accent);}

/* ===== 归档 ===== */
.lwc-archive-cat{font-size:20px;margin:26px 0 10px;color:#fff;}
.lwc-archive-list{list-style:none;padding:0;margin:0;display:grid;gap:6px;}
.lwc-archive-list a{color:var(--muted);}
.lwc-404{text-align:center;}

/* ===== 响应式（V7 M25：折叠面板保留，禁止 display:none） ===== */
@media (max-width: 1024px){
  .lwc-nav-toggle{display:flex;}
  .lwc-nav-menu{position:fixed;top:var(--nav-h);right:0;width:260px;height:calc(100vh - var(--nav-h));
    background:var(--bg-2);border-left:1px solid var(--line);flex-direction:column;gap:0;padding:14px 0;
    transform:translateX(100%);transition:transform .25s;}
  .lwc-nav-menu.open{transform:translateX(0);}
  .lwc-nav-menu a{padding:14px 22px;border-bottom:1px solid var(--line);}
  .lwc-layout,.lwc-list-layout{grid-template-columns:1fr;}
  .lwc-toc-aside,.lwc-cat-side{position:static;max-height:none;margin-top:20px;}
  .lwc-ctn-page .lwc-page-card{padding:24px 18px;}
  .lwc-footer-inner{grid-template-columns:1fr 1fr;}
  .lwc-hero{padding:44px 22px;}
  .lwc-hero-title{font-size:30px;}
  .lwc-capsule{right:10px;}
}
@media (max-width:560px){
  .lwc-footer-inner{grid-template-columns:1fr;}
  .lwc-container{padding:20px 16px 50px;}
}