:root{
  --bg:#0a1633;
  --bg-2:#0f2148;
  --panel:#122a55;
  --panel-2:#16335f;
  --line:#29406e;
  --line-soft:#1d3056;
  --cyan:#19d3da;
  --cyan-soft:#3fe3e8;
  --text:#dbe7f5;
  --muted:#8aa0c0;
  --metal:#c7d6ec;
  --h2-inset:16px;
  --header-h:64px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:
    radial-gradient(1200px 600px at 80% -10%, rgba(25,211,218,.10), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(25,211,218,.06), transparent 55%),
    var(--bg);
  color:var(--text);
  font-family:"Segoe UI","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--cyan-soft);text-decoration:none}
a:hover{color:var(--cyan)}
img{max-width:100%}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:50;
  background:rgba(10,22,51,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text);letter-spacing:.3px}
.brand-mark{width:18px;height:18px;border:2px solid var(--cyan);border-radius:50%;position:relative}
.brand-mark::after{content:"";position:absolute;inset:4px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.brand-text{font-size:15px}
.primary-nav{display:flex;gap:18px;margin-left:auto;flex-wrap:wrap}
.primary-nav a{color:var(--muted);font-size:14px;padding:6px 2px;border-bottom:2px solid transparent}
.primary-nav a:hover{color:var(--text);border-color:var(--cyan)}
.nav-toggle{display:none;margin-left:auto;background:var(--panel);color:var(--text);border:1px solid var(--line);
  border-radius:8px;padding:8px 12px;cursor:pointer;font-size:14px}

/* ---------- Layouts ---------- */
main.container{padding-top:calc(var(--header-h) + 28px);padding-bottom:60px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:40px;align-items:start}
.list-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:32px;align-items:start}
.list-layout .layout-grid{grid-template-columns:240px minmax(0,1fr)}

/* content column */
.content-main{padding-left:var(--h2-inset)}
.content-main .breadcrumb{padding-left:0}
.page-content{background:linear-gradient(180deg,var(--bg-2),var(--bg));border:1px solid var(--line);
  border-radius:16px;padding:48px;--h2-inset:48px;padding-left:48px}
.content-main.page-content{padding-left:48px}

.doc-title{font-size:30px;line-height:1.3;margin:8px 0 14px;color:#fff;letter-spacing:.4px}
.doc-meta{margin-bottom:18px;color:var(--muted);font-size:14px}
.doc-kw{display:inline-block}

/* ---------- Breadcrumb ---------- */
.breadcrumb{margin:6px 0 18px;font-size:13px;color:var(--muted);padding-left:var(--h2-inset)}
.breadcrumb-list{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0}
.crumb-item{display:flex;align-items:center}
.crumb-item:not(:last-child)::after{content:"›";margin-left:8px;color:var(--line)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--cyan)}

/* ---------- Article body typography ---------- */
.content-main h2{font-size:22px;margin:30px 0 12px;color:#fff;border-left:3px solid var(--cyan);padding-left:12px}
.content-main h3{font-size:18px;margin:22px 0 10px;color:var(--cyan-soft)}
.content-main p{margin:10px 0}
.content-main ul,.content-main ol{margin:10px 0;padding-left:22px}
.content-main li{margin:6px 0}
.content-main blockquote{margin:16px 0;padding:12px 16px;background:rgba(25,211,218,.07);
  border-left:3px solid var(--cyan);border-radius:8px;color:var(--metal)}
.content-main code{background:var(--panel);padding:2px 6px;border-radius:5px;color:var(--cyan-soft);font-size:14px}
.content-main strong{color:#fff}

/* tables — 覆盖全部正文表格（含 Markdown 裸 table） */
.content-main table,.page-main table,table.data{
  width:100%;border-collapse:collapse;margin:16px 0;font-size:14px;
  border:1px solid #cbd5e1;background:rgba(255,255,255,.02)}
.content-main th,.page-main th,table.data th{
  background:#1b3a6b;color:#fff;text-align:left;padding:10px 12px;border:1px solid #cbd5e1;font-weight:600}
.content-main td,.page-main td,table.data td{padding:9px 12px;border:1px solid #cbd5e1;color:var(--metal)}
.content-main tbody tr:nth-child(even),table.data tbody tr:nth-child(even){background:rgba(255,255,255,.03)}

/* case callout */
.case-callout{margin:20px 0;padding:14px 16px;background:rgba(25,211,218,.08);
  border:1px solid var(--line);border-radius:10px;color:var(--metal)}
.case-callout strong{color:var(--cyan-soft)}

/* FAQ */
.faq-block{margin:26px 0}
.faq-title{font-size:22px;color:#fff;border-left:3px solid var(--cyan);padding-left:12px;margin:24px 0 12px}
.faq-item{border:1px solid var(--line);border-radius:10px;margin:8px 0;background:var(--bg-2);overflow:hidden}
.faq-item summary{cursor:pointer;padding:12px 16px;color:var(--text);font-weight:600;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"+";color:var(--cyan);margin-right:10px;font-weight:700}
.faq-item[open] summary::before{content:"−"}
.faq-a{padding:0 16px 14px;color:var(--metal)}

/* ---------- TOC ---------- */
.toc-aside{position:sticky;top:calc(var(--header-h) + 20px);max-height:calc(100vh - var(--header-h) - 40px);overflow-y:auto}
.toc-panel{border:1px solid var(--line);border-radius:12px;background:var(--bg-2);padding:6px 0}
.toc-summary{cursor:pointer;padding:12px 16px;font-weight:700;color:#fff;list-style:none}
.toc-summary::-webkit-details-marker{display:none}
.toc-summary::after{content:"▾";float:right;color:var(--cyan);transition:transform .2s}
.toc-panel:not([open]) .toc-summary::after{transform:rotate(-90deg)}
.toc-list{list-style:none;margin:0;padding:0 8px 8px}
.toc-li{margin:2px 0}
.toc-li a{display:block;padding:6px 12px;border-radius:8px;color:var(--muted);font-size:13px}
.toc-li a:hover{background:var(--panel);color:var(--text)}
.toc-l3 a{padding-left:26px;font-size:12.5px}

/* ---------- Category side (list) ---------- */
.cat-side{position:sticky;top:calc(var(--header-h) + 20px)}
.cat-panel{border:1px solid var(--line);border-radius:12px;background:var(--bg-2);padding:6px 0}
.cat-summary{cursor:pointer;padding:12px 16px;font-weight:700;color:#fff;list-style:none}
.cat-summary::-webkit-details-marker{display:none}
.cat-summary::after{content:"▾";float:right;color:var(--cyan);transition:transform .2s}
.cat-panel:not([open]) .cat-summary::after{transform:rotate(-90deg)}
.category-list{list-style:none;margin:0;padding:0 8px 8px}
.cat-item{margin:2px 0}
.cat-item a{display:block;padding:8px 12px;border-radius:8px;color:var(--muted);font-size:14px}
.cat-item a:hover{background:var(--panel);color:var(--text)}
.cat-item.active a{background:var(--panel-2);color:var(--cyan-soft);font-weight:600}

.cat-content .doc-title{margin-top:0}
.list-intro{color:var(--muted);margin:6px 0 18px}
.item-list{list-style:none;margin:0;padding:0}
.item-row{border-bottom:1px solid var(--line-soft);padding:14px 0}
.item-link{font-size:17px;font-weight:600;color:var(--text)}
.item-link:hover{color:var(--cyan)}
.item-desc{margin:6px 0 0;color:var(--muted);font-size:14px}

/* ---------- Home ---------- */
.hero{position:relative;margin-top:calc(var(--header-h) + 8px);border:1px solid var(--line);
  border-radius:18px;overflow:hidden;background:linear-gradient(135deg,var(--bg-2),#0c1f44)}
.hero-grid{position:absolute;inset:0;
  background-image:linear-gradient(rgba(25,211,218,.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(25,211,218,.08) 1px,transparent 1px);
  background-size:38px 38px;mask-image:radial-gradient(circle at 70% 30%,#000,transparent 75%)}
.hero-inner{position:relative;padding:54px 40px;max-width:760px}
.hero-kicker{color:var(--cyan);font-size:13px;letter-spacing:2px;text-transform:uppercase;margin:0 0 10px}
.hero-title{font-size:42px;line-height:1.2;margin:0 0 16px;color:#fff;letter-spacing:.5px}
.hero-sub{color:var(--metal);font-size:16px;margin:0 0 24px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{background:var(--cyan);color:#04222a;font-weight:700;padding:11px 22px;border-radius:10px}
.btn-primary:hover{background:var(--cyan-soft);color:#04222a}
.btn-ghost{border:1px solid var(--cyan);color:var(--cyan);padding:11px 22px;border-radius:10px}
.btn-ghost:hover{background:rgba(25,211,218,.1)}

.block{margin-top:40px}
.block-h{font-size:22px;color:#fff;border-left:3px solid var(--cyan);padding-left:12px;margin:0 0 16px}
.chip-list{list-style:none;display:flex;flex-wrap:wrap;gap:10px;margin:0;padding:0}
.chip{background:var(--bg-2);border:1px solid var(--line);color:var(--metal);padding:8px 14px;border-radius:999px;font-size:14px}
.chip-cyan .chip{border-color:rgba(25,211,218,.4);color:var(--cyan-soft)}
.base-list{margin:0;padding:0;list-style:none}
.base-item{position:relative;padding:10px 0 10px 22px;border-bottom:1px solid var(--line-soft);color:var(--metal)}
.base-item::before{content:"▸";position:absolute;left:0;color:var(--cyan)}
.link-list{list-style:none;margin:0;padding:0}
.link-list li{padding:8px 0;border-bottom:1px solid var(--line-soft)}
.more-link{display:inline-block;margin-top:12px;color:var(--cyan)}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:36px}
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.cat-tile{display:flex;flex-direction:column;gap:4px;background:var(--bg-2);border:1px solid var(--line);
  border-radius:12px;padding:16px 18px;color:var(--text)}
.cat-tile:hover{border-color:var(--cyan);transform:translateY(-2px);transition:.2s}
.cat-tile-name{font-weight:700;color:#fff}
.cat-tile-sub{font-size:12px;color:var(--muted)}

/* ---------- Footer ---------- */
.site-footer{margin-top:60px;border-top:1px solid var(--line);background:var(--bg-2)}
.footer-inner{max-width:1200px;margin:0 auto;padding:36px 24px;display:grid;grid-template-columns:1fr 1fr 2fr;gap:28px}
.footer-h{font-size:15px;color:#fff;margin:0 0 12px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin:6px 0}
.footer-links a{color:var(--muted);font-size:14px}
.footer-note{color:var(--muted);font-size:13.5px;margin:0}
.footer-bottom{max-width:1200px;margin:0 auto;padding:14px 24px;border-top:1px solid var(--line-soft);
  color:var(--muted);font-size:13px;display:flex;gap:10px;flex-wrap:wrap}
.footer-sep{opacity:.5}

/* ---------- Float capsule ---------- */
.float-capsule{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:60;
  display:flex;flex-direction:column;gap:8px;padding:10px 8px;border-radius:999px;
  background:linear-gradient(180deg,var(--cyan),#0e8e95);box-shadow:0 8px 28px rgba(25,211,218,.35)}
.cap-btn{border:none;background:rgba(255,255,255,.14);color:#04222a;font-weight:700;font-size:13px;
  width:46px;height:46px;border-radius:50%;cursor:pointer;writing-mode:vertical-rl;letter-spacing:2px}
.cap-btn:hover{background:#fff}
.card-modal[hidden]{display:none}
.card-modal{position:fixed;inset:0;z-index:80;display:flex;align-items:center;justify-content:center}
.card-modal-mask{position:absolute;inset:0;background:rgba(4,12,30,.7)}
.card-modal-inner{position:relative;background:#fff;border-radius:14px;padding:14px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.card-img{display:block;width:300px;height:500px;object-fit:contain;background:#fff;border-radius:8px}
.card-close{position:absolute;top:-14px;right:-14px;width:34px;height:34px;border-radius:50%;border:none;
  background:var(--cyan);color:#04222a;font-weight:700;cursor:pointer}
.toast[hidden]{display:none}
.toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%);z-index:90;
  background:var(--panel-2);color:var(--text);border:1px solid var(--cyan);padding:10px 18px;border-radius:10px;font-size:14px}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .primary-nav{display:none;position:absolute;top:var(--header-h);left:0;right:0;flex-direction:column;
    background:var(--bg-2);border-bottom:1px solid var(--line);padding:10px 24px;gap:4px}
  .primary-nav.open{display:flex}
  .nav-toggle{display:block}
  .article-layout{grid-template-columns:1fr}
  .list-layout{grid-template-columns:1fr}
  .toc-aside{position:static;max-height:none;margin-top:24px}
  .cat-side{position:static;margin-bottom:18px}
  .two-col{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .page-content{padding:28px}
}
@media (max-width:560px){
  .hero-title{font-size:32px}
  .cat-grid{grid-template-columns:1fr}
  .doc-title{font-size:25px}
}