/* ===== STD 6G 射频标准库 · 高端科技暗色玻璃拟态 ===== */
:root{
  --bg-0:#0A0E1A; --bg-1:#111A2E; --bg-2:#16223C;
  --text:#E6F1FF; --muted:#9FB3C8;
  --primary:#00E5FF; --primary-2:#2979FF; --primary-3:#1565FF;
  --ok:#00E676; --warn:#FFB300; --bad:#FF5252;
  --line:#cbd5e1; --glass:rgba(255,255,255,.06); --glass-bd:rgba(120,180,255,.18);
  --radius:16px; --h2-inset:16px;
  --shadow:0 18px 50px rgba(0,0,0,.45);
  --font:"PingFang SC",-apple-system,"Segoe UI",Roboto,"Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);background:
  radial-gradient(1200px 600px at 80% -10%,rgba(41,121,255,.22),transparent 60%),
  radial-gradient(900px 500px at 0% 0%,rgba(0,229,255,.12),transparent 55%),
  var(--bg-0);
  color:var(--text);line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
a:hover{color:#7af2ff}
img{max-width:100%}
.muted{color:var(--muted)}

/* 容器与面包屑对齐 */
.container{max-width:1200px;margin:0 auto;padding:0 16px}
.page-wrap{padding:0 48px}
.breadcrumb{margin:22px 0 8px;font-size:13px;color:var(--muted)}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:0;margin:0}
.breadcrumb .sep{opacity:.5;margin:0 2px}
.breadcrumb .current{color:var(--text)}
.breadcrumb a:hover{color:#7af2ff}

/* 顶部固定导航 */
.site-header{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
  background:rgba(10,14,26,.72);border-bottom:1px solid var(--glass-bd)}
.header-inner{max-width:1200px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text)}
.brand-name{font-size:17px;background:linear-gradient(90deg,var(--primary),var(--primary-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.main-nav{display:flex;gap:22px;margin-left:auto;flex-wrap:wrap}
.main-nav a{color:var(--muted);font-size:14px;padding:6px 2px;border-bottom:2px solid transparent}
.main-nav a:hover,.main-nav a.active{color:var(--text);border-color:var(--primary)}
.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:0;cursor:pointer;margin-left:auto}
.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px}
.mobile-nav{display:none;flex-direction:column;padding:8px 16px 14px;background:rgba(10,14,26,.95);border-bottom:1px solid var(--glass-bd)}
.mobile-nav a{padding:10px 4px;color:var(--muted);border-bottom:1px solid rgba(255,255,255,.06)}

/* 栅格 */
.article-layout.layout-grid{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:36px;align-items:start;margin:18px 0 60px}
.list-layout{display:grid;grid-template-columns:240px minmax(0, 1fr);gap:30px;align-items:start;margin:18px 0 60px}
.cat-content{min-width:0}
.content-main,.page-main{min-width:0}
.prose{max-width:760px}

/* 正文排版 */
.prose h2,.page-main h2{font-size:24px;margin:34px 0 14px;padding-left:0;color:#fff;position:relative}
.prose h2::before{content:"";position:absolute;left:-14px;top:6px;width:4px;height:22px;border-radius:3px;background:linear-gradient(var(--primary),var(--primary-3))}
.prose h3{font-size:19px;margin:24px 0 10px;color:#dbeeff}
.prose p{margin:12px 0;color:#cdd9ea}
.prose ul,.prose ol{padding-left:22px;color:#cdd9ea}
.prose li{margin:6px 0}
.prose blockquote{margin:16px 0;padding:14px 18px;background:var(--glass);border-left:3px solid var(--primary);border-radius:10px;color:#dbeeff}
.post-meta{color:var(--muted);font-size:13px;margin:6px 0 0}

/* 表格边框（覆盖全部正文 table，含 Markdown 裸表） */
.content-main table,.page-main table,table.data{border-collapse:collapse;width:100%;margin:18px 0;font-size:14px;background:rgba(255,255,255,.02)}
.content-main table th,.content-main table td,.page-main table th,.page-main table td,table.data th,table.data td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.content-main table th,.page-main table th,table.data th{background:linear-gradient(90deg,var(--primary-3),var(--primary-2));color:#fff;font-weight:600}
.content-main table tr:nth-child(even) td,.page-main table tr:nth-child(even) td,table.data tr:nth-child(even) td{background:rgba(120,180,255,.06)}

/* 文章/列表页右侧 TOC */
.toc-aside{position:sticky;top:84px;max-height:calc(100vh - 104px);overflow:auto}
.toc-panel{background:var(--glass);border:1px solid var(--glass-bd);border-radius:14px;padding:14px 16px}
.toc-panel summary{cursor:pointer;font-weight:600;color:#dbeeff;list-style:none}
.toc-panel summary::-webkit-details-marker{display:none}
.toc-panel summary::after{content:"▾";float:right;transition:.2s}
.toc-panel:not([open]) summary::after{transform:rotate(-90deg)}
.toc-nav ol{list-style:none;padding-left:0;margin:10px 0 0}
.toc-nav li{margin:6px 0;font-size:13px}
.toc-nav .lvl-3{padding-left:14px;color:var(--muted)}
.toc-nav a{color:var(--muted)}
.toc-nav a:hover{color:var(--primary)}

/* 分类侧栏 */
.cat-side .cat-panel{background:var(--glass);border:1px solid var(--glass-bd);border-radius:14px;padding:14px 16px;position:sticky;top:84px}
.cat-panel summary{cursor:pointer;font-weight:600;color:#dbeeff;list-style:none}
.cat-panel summary::-webkit-details-marker{display:none}
.cat-panel summary::after{content:"▾";float:right;transition:.2s}
.cat-panel:not([open]) summary::after{transform:rotate(-90deg)}
.category-list{list-style:none;padding:10px 0 0;margin:0}
.category-list li{margin:4px 0}
.category-list a{display:block;padding:8px 10px;border-radius:9px;color:var(--muted);font-size:14px}
.category-list a:hover{background:rgba(0,229,255,.12);color:var(--text)}
.category-list li.active a{background:linear-gradient(90deg,rgba(0,229,255,.22),rgba(41,121,255,.12));color:#fff}

/* 列表卡片 */
.list-title{font-size:26px;margin:6px 0 18px}
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.doc-card{display:block;background:var(--glass);border:1px solid var(--glass-bd);border-radius:var(--radius);padding:18px 20px;transition:.22s;position:relative;overflow:hidden}
.doc-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow)}
.doc-cat{font-size:12px;color:var(--primary);letter-spacing:.5px}
.doc-title{font-size:17px;margin:8px 0;color:#fff}
.doc-excerpt{font-size:13px;color:var(--muted);margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.doc-more{font-size:13px;color:var(--primary)}

/* FAQ */
.faq{margin:30px 0}
.faq-title{font-size:22px;margin:0 0 12px;color:#fff}
.faq-item{background:var(--glass);border:1px solid var(--glass-bd);border-radius:12px;margin:10px 0;padding:0 16px}
.faq-item summary{cursor:pointer;padding:14px 0;font-weight:600;color:#dbeeff;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";float:right;color:var(--primary);font-size:18px}
.faq-item[open] summary::after{content:"−"}
.faq-a{padding:0 0 14px;color:#cdd9ea}

/* 相关阅读 */
.related{margin:30px 0}
.related-title{font-size:20px;color:#fff;margin:0 0 12px}
.related-list{list-style:none;padding:0;margin:0}
.related-list li{background:var(--glass);border:1px solid var(--glass-bd);border-radius:10px;padding:10px 14px;margin:8px 0}
.related-list a{font-weight:600}

/* 首页 Hero */
.hero{position:relative;padding:72px 0 36px;overflow:hidden}
.hero-glow{position:absolute;inset:0;background:radial-gradient(700px 360px at 70% 10%,rgba(0,229,255,.20),transparent 60%);pointer-events:none}
.hero-inner{position:relative;max-width:880px}
.hero-kicker{color:var(--primary);letter-spacing:3px;font-size:13px;margin:0 0 10px}
.hero-title{font-size:46px;line-height:1.15;margin:0 0 16px;background:linear-gradient(90deg,#fff,var(--primary));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:var(--muted);margin:0 0 26px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{display:inline-block;padding:12px 26px;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--primary-2));color:#04121f;font-weight:700;box-shadow:0 10px 30px rgba(0,229,255,.3)}
.btn-primary:hover{color:#04121f;filter:brightness(1.08)}
.btn-ghost{display:inline-block;padding:12px 26px;border-radius:999px;border:1px solid var(--glass-bd);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:#fff}
.hero-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag-chip{font-size:13px;padding:6px 14px;border-radius:999px;background:var(--glass);border:1px solid var(--glass-bd);color:var(--muted)}

/* 区块 */
.sec-title{font-size:26px;margin:40px 0 18px;color:#fff;position:relative;padding-left:14px}
.sec-title::before{content:"";position:absolute;left:0;top:6px;width:4px;height:24px;border-radius:3px;background:linear-gradient(var(--primary),var(--primary-3))}
.cap-grid,.scene-grid{display:grid;gap:18px}
.cap-grid{grid-template-columns:repeat(3,1fr)}
.cap-card,.scene-card{background:var(--glass);border:1px solid var(--glass-bd);border-radius:var(--radius);padding:22px;transition:.22s}
.cap-card:hover,.scene-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow)}
.cap-icon{font-size:30px;margin-bottom:10px}
.cap-card h3,.scene-card h3{margin:6px 0 8px;color:#fff;font-size:18px}
.cap-card p,.scene-card p{color:var(--muted);font-size:14px;margin:0}
.scene-grid{grid-template-columns:repeat(5,1fr)}
.dim-bar{display:flex;flex-wrap:wrap;gap:10px}
.dim{font-size:13px;padding:8px 14px;border-radius:10px;background:linear-gradient(90deg,rgba(0,229,255,.14),rgba(41,121,255,.1));border:1px solid var(--glass-bd);color:#dbeeff}
.latest-section{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:20px}
.mini-list{list-style:none;padding:0;margin:0}
.mini-list li{padding:9px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.mini-list a{color:#cdd9ea;font-size:14px}
.cta-section{margin:50px 0;text-align:center;background:var(--glass);border:1px solid var(--glass-bd);border-radius:22px;padding:40px 24px}
.cta-section h2{color:#fff;margin:0 0 10px}
.cta-section p{color:var(--muted);margin:0 0 20px}

/* 页脚 */
.site-footer{margin-top:60px;border-top:1px solid var(--glass-bd);background:rgba(10,14,26,.6);padding:40px 0 18px}
.footer-inner{max-width:1200px;margin:0 auto;padding:0 16px;display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:26px}
.footer-col h4{color:#fff;font-size:15px;margin:0 0 12px}
.footer-col a{display:block;color:var(--muted);font-size:13px;padding:4px 0}
.footer-col p{color:var(--muted);font-size:13px}
.footer-bottom{max-width:1200px;margin:24px auto 0;padding:16px;border-top:1px solid rgba(255,255,255,.06);font-size:12px;color:var(--muted);text-align:center}

/* 悬浮胶囊 */
.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(--primary-3),var(--primary-2),var(--primary));
  box-shadow:0 12px 36px rgba(0,150,255,.45)}
.cap-btn{display:flex;flex-direction:column;align-items:center;gap:3px;width:54px;padding:8px 0;border:0;border-radius:14px;
  background:rgba(255,255,255,.12);color:#fff;font-size:11px;cursor:pointer;transition:.2s}
.cap-btn:hover{background:rgba(255,255,255,.28);transform:scale(1.05)}
.cap-btn svg{display:block}

/* 名片弹窗 */
.card-modal{position:fixed;inset:0;z-index:80;display:flex;align-items:center;justify-content:center}
.card-modal[hidden]{display:none}
.card-modal__mask{position:absolute;inset:0;background:rgba(4,10,22,.82);backdrop-filter:blur(4px)}
.card-modal__box{position:relative;background:#fff;border-radius:14px;padding:8px;box-shadow:var(--shadow)}
.card-modal__img{display:block;width:300px;height:500px;object-fit:contain;image-rendering:auto}
.card-modal__close{position:absolute;top:-14px;right:-14px;width:34px;height:34px;border-radius:50%;border:0;background:var(--primary);color:#04121f;font-size:20px;cursor:pointer;box-shadow:var(--shadow)}

/* 归档 */
.archive-list{list-style:none;padding:0;columns:2;column-gap:30px}
.archive-list li{padding:6px 0;border-bottom:1px solid rgba(255,255,255,.06);break-inside:avoid}

/* 响应式折叠断点 1024 */
@media (max-width:1024px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .mobile-nav.open{display:flex}
  .article-layout.layout-grid{grid-template-columns:1fr}
  .toc-aside{position:static;max-height:none;margin-top:20px}
  .list-layout{grid-template-columns:1fr}
  .cat-side .cat-panel{position:static}
  .cap-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .latest-section{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .archive-list{columns:1}
  .page-wrap{padding:0 16px}
}
@media (max-width:640px){
  .hero-title{font-size:34px}
  .scene-grid{grid-template-columns:1fr}
  .capsule{right:10px}
  .cap-btn{width:46px}
}