:root{--blue:#2563eb;--blue-dark:#1d4ed8;--blue-light:#eff4ff;--ink:#0f172a;--body:#475569;--muted:#64748b;--line:#e6eaf2;--soft:#f7f9fc;--font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}body{margin:0;font-family:var(--font);font-size:15px;line-height:1.7;color:var(--body);background:#fff;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}h1,h2,h3{color:var(--ink);line-height:1.35}button,input{font:inherit}a,button,input,summary{-webkit-tap-highlight-color:transparent}:focus-visible{outline:3px solid #93b4fb;outline-offset:4px}[hidden]{display:none!important}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;top:-80px;left:16px;padding:10px 20px;background:var(--blue);color:#fff;z-index:100}.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.header-inner{max-width:1280px;min-height:66px;padding:0 28px;margin:0 auto;display:flex;align-items:center;gap:32px}.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-size:19px;font-weight:800;white-space:nowrap}.brand img{border-radius:9px}.site-nav{display:flex;gap:28px;margin-left:auto;align-items:center;font-weight:500}.site-nav a:hover,.site-nav [aria-current]{color:var(--blue)}.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;border:1px solid transparent;border-radius:999px;padding:10px 22px;font-weight:600;line-height:1.5;transition:background .2s,box-shadow .2s}.button-primary{background:var(--blue);color:#fff}.button-primary:hover{background:var(--blue-dark);box-shadow:0 8px 20px -10px #2563eb80}.button-ghost{border-color:var(--line);background:#fff;color:var(--ink)}.button-ghost:hover{border-color:var(--blue);color:var(--blue)}

.docs-layout{max-width:1360px;margin:0 auto;display:grid;grid-template-columns:248px minmax(0,1fr) 180px;gap:36px;padding:0 28px;min-height:calc(100vh - 166px)}.sidebar{position:sticky;top:66px;align-self:start;height:calc(100vh - 66px);overflow-y:auto;border-right:1px solid var(--line);padding:28px 22px 32px 0;scrollbar-width:thin}.directory>summary{display:none}.version-switch{display:flex;background:var(--soft);border:1px solid var(--line);border-radius:9px;padding:4px;margin-bottom:20px;gap:2px}.version-switch a{flex:1;text-align:center;font-size:12px;font-weight:600;padding:7px 3px;border-radius:6px;white-space:nowrap}.version-switch [aria-current]{color:var(--blue);background:#fff;box-shadow:0 1px 5px #0f172a14}.version-switch a:hover{color:var(--blue)}.search-field{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:8px;padding:7px 10px;background:#fff}.search-field:focus-within{border-color:var(--blue)}.search-field>span{font-size:22px;line-height:1;color:var(--muted)}.search-field input{min-width:0;width:100%;font-size:12px;border:0;outline:0!important;background:none;color:var(--ink);padding:2px 0}.search-field input::placeholder{color:var(--muted)}.search-status{font-size:12px;color:var(--muted);margin:8px 0}.search-status:empty{margin:0}.search-results{list-style:none;padding:0;margin:12px 0 18px}.search-results li{border-bottom:1px solid var(--line)}.search-results a{display:block;padding:10px 3px;font-size:13px}.search-results a:hover strong{color:var(--blue)}.search-results strong{display:block;color:var(--ink);font-weight:600}.search-results span{display:block;font-size:12px;color:var(--muted);line-height:1.6;overflow-wrap:anywhere;margin-top:5px}.nav-section{margin-top:24px}.nav-section h2{font-size:12px;color:var(--muted);font-weight:600;margin:0 0 8px;padding-left:10px}.nav-section a{display:block;padding:7px 10px;font-size:13px;border-radius:6px;line-height:1.5;margin:2px 0}.nav-section a:hover{background:var(--soft);color:var(--blue)}.nav-section [aria-current]{background:var(--blue-light);color:var(--blue);font-weight:600}.sidebar-help{margin-top:28px;padding:18px 10px 0;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.sidebar-help a{display:block;color:var(--body);margin-top:8px}.sidebar-help a:hover{color:var(--blue)}
.doc-main{padding:32px 0 60px;min-width:0}.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-bottom:28px}.breadcrumbs a:hover{color:var(--blue)}.article-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--muted);margin-bottom:14px}.version-badge{border-radius:6px;padding:3px 9px;font-weight:600;background:#e6f7ee;color:#127642}.version-badge.wechat{background:#e8f8ec;color:#187717}.prose{font-size:15px;line-height:1.85;overflow-wrap:anywhere}.prose h1{font-size:30px;letter-spacing:-.02em;margin:0 0 24px;line-height:1.45}.prose h2{font-size:21px;margin:38px 0 14px;padding-top:8px;border-top:1px solid var(--line)}.prose h3{font-size:17px;margin:28px 0 12px}.prose h4{font-size:16px;margin:22px 0 10px}.prose p{margin:14px 0}.prose a:not(.screenshot-link):not(.heading-anchor){color:var(--blue);text-decoration:underline;text-underline-offset:3px}.prose a:hover{color:var(--blue-dark)}.prose ul,.prose ol{padding-left:24px;margin:14px 0}.prose li{margin:5px 0}.prose li p{margin:5px 0}.prose strong{color:var(--ink);font-weight:650}.prose blockquote{margin:18px 0;padding:2px 18px;border-left:3px solid var(--blue);border-radius:0 8px 8px 0;background:var(--blue-light);color:#3c5275;font-size:14px}.prose blockquote p{margin:12px 0}.prose :not(pre)>code{font-family:Consolas,"SFMono-Regular",monospace;background:#f0f3f8;border-radius:5px;padding:2px 5px;font-size:.9em;color:#1d4ed8}.prose pre{position:relative;background:#0f172a;color:#e2e8f0;border-radius:10px;padding:20px;margin:18px 0;overflow-x:auto;line-height:1.75}.prose pre code{font-family:Consolas,"SFMono-Regular",monospace;font-size:13px;white-space:pre;overflow-wrap:normal}.prose hr{border:0;border-top:1px solid var(--line);margin:26px 0}.heading-anchor{margin-left:10px;font-size:.8em;color:#94a3b8;font-weight:400;opacity:0}.prose :is(h2,h3,h4):hover .heading-anchor,.heading-anchor:focus{opacity:1}.table-scroll{width:100%;overflow-x:auto;margin:20px 0;border:1px solid var(--line);border-radius:10px;scrollbar-width:thin}.prose table{border-collapse:collapse;width:100%;font-size:13px;line-height:1.7;text-align:left}.prose th{color:var(--ink);font-weight:600;background:var(--soft)}.prose th,.prose td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top;min-width:70px}.prose tr:last-child td{border-bottom:0}.prose td>code{white-space:normal}.screenshot-link{display:block;line-height:0;margin:24px 0;max-width:100%}.prose img{display:block;max-width:100%;height:auto;border:1px solid var(--line);border-radius:10px}.article-pager{display:grid;grid-template-columns:1fr 1fr;gap:18px;border-top:1px solid var(--line);padding-top:28px;margin-top:40px}.article-pager a{display:block;border:1px solid var(--line);border-radius:10px;padding:16px 18px;min-width:0}.article-pager a:hover{border-color:#adc5f5;background:var(--blue-light)}.article-pager span{display:block;font-size:12px;color:var(--muted)}.article-pager strong{display:block;font-size:14px;color:var(--ink);margin-top:6px}.article-pager .next{text-align:right}.toc{position:sticky;top:94px;align-self:start;max-height:calc(100vh - 120px);overflow:auto;scrollbar-width:thin;border-left:1px solid var(--line);padding-left:16px;margin-top:94px}.toc>p{font-size:12px;font-weight:600;color:var(--ink);margin:0 0 12px}.toc nav{display:flex;flex-direction:column;gap:10px}.toc a{font-size:12px;color:var(--muted);line-height:1.55}.toc a:hover,.toc a[aria-current]{color:var(--blue)}.toc-depth-3{padding-left:10px}
.site-footer{border-top:1px solid var(--line);background:var(--soft);font-size:12px;color:var(--muted)}.footer-inner{max-width:1280px;margin:0 auto;padding:24px 28px;display:flex;align-items:center;justify-content:space-between;gap:18px}.footer-inner nav{display:flex;flex-wrap:wrap;gap:20px}.footer-inner a:hover{color:var(--blue)}
@media(min-width:961px){.directory:not([open])>.directory-body{display:block!important}}
@media(max-width:1200px){.docs-layout{grid-template-columns:232px minmax(0,1fr);gap:32px;max-width:1100px}.toc{display:none}}
@media(max-width:960px){.docs-layout{display:block;padding:0 24px;max-width:800px}.sidebar{position:static;height:auto;overflow:visible;border:1px solid var(--line);border-radius:10px;padding:0;margin-top:24px;background:var(--soft)}.directory>summary{display:flex;align-items:center;justify-content:space-between;cursor:pointer;padding:13px 18px;font-size:14px;color:var(--ink);font-weight:600;list-style:none}.directory>summary::-webkit-details-marker{display:none}.directory[open]>summary>span{transform:rotate(180deg)}.directory-body{background:#fff;padding:18px;border-radius:0 0 10px 10px;border-top:1px solid var(--line)}.sidebar-help{margin-top:20px}.sidebar>.version-switch{margin:12px 12px 0}.doc-main{padding-top:24px}.breadcrumbs{margin-bottom:24px}.chapter-nav{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.search-field input{font-size:14px}.search-results a{padding:14px 3px}.site-footer .footer-inner{flex-direction:column;align-items:flex-start}}
@media(max-width:640px){html{scroll-padding-top:110px}.header-inner{padding:12px 18px;gap:8px;min-height:88px;flex-wrap:wrap}.brand{font-size:17px}.brand img{width:30px;height:30px}.site-nav{order:3;width:100%;justify-content:center;gap:34px;font-size:13px;margin:3px 0 0}.header-action{margin-left:auto;font-size:12px;padding:7px 13px}.docs-layout{padding:0 18px}.sidebar{margin-top:20px}.prose{font-size:14px}.prose h1{font-size:25px}.prose h2{font-size:19px}.prose h3{font-size:16px}.prose ul,.prose ol{padding-left:20px}.prose pre{padding:16px}.prose pre code{font-size:12px}.prose table{min-width:420px}.prose th,.prose td{padding:9px 10px}.heading-anchor{opacity:1}.article-pager{gap:10px}.article-pager a{padding:13px 12px}.article-pager strong{font-size:13px}.footer-inner{padding:24px 20px}.footer-inner nav{gap:12px 20px}.chapter-nav{display:block}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media print{.site-header,.site-footer,.sidebar,.toc,.article-pager,.breadcrumbs,.skip-link{display:none!important}.docs-layout{display:block;padding:0;max-width:none}.doc-main{padding:0}.prose{font-size:11pt}.prose pre{white-space:pre-wrap;background:#f1f5f9;color:#111}.prose pre code{white-space:pre-wrap}.table-scroll{overflow:visible}.prose table{min-width:0}.prose img{max-height:700px;object-fit:contain}.heading-anchor{display:none}}
