.xhs-base{--xhs-navy:#172b43;--xhs-blue:#315d9a;--xhs-text:#182b43;--xhs-muted:#65758a;--xhs-line:#e1e7ef;--xhs-top:84px;background:#f2f5f8;color:var(--xhs-text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.6;min-height:calc(100vh - 84px);-webkit-font-smoothing:antialiased;text-align:left}
.xhs-base *{box-sizing:border-box}.xhs-base a{color:inherit;text-decoration:none}.xhs-base button,.xhs-base input,.xhs-base select{font:inherit}.xhs-base button{cursor:pointer}.xhs-base svg{width:20px;height:20px;flex-shrink:0;vertical-align:middle}.xhs-base h1,.xhs-base h2,.xhs-base h3,.xhs-base p{margin:0}.xhs-base [hidden]{display:none!important}.xhs-base a:focus-visible,.xhs-base button:focus-visible,.xhs-base input:focus-visible,.xhs-base select:focus-visible,.xhs-base summary:focus-visible{outline:3px solid #b18a40;outline-offset:3px}.xhs-sr{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.xhs-skip{position:fixed;left:265px;top:-100px;z-index:999999;background:white;padding:12px 20px;border:2px solid #315d9a}.xhs-skip:focus{top:90px}
.xhs-sidebar{position:fixed;z-index:80;top:var(--xhs-top);bottom:0;left:0;width:248px;padding:30px 18px 20px;background:var(--xhs-navy);color:#d6e0ec;display:flex;flex-direction:column;overflow:auto;scrollbar-width:thin;scrollbar-color:#50627a transparent}.xhs-brand{display:flex;gap:12px;align-items:center;padding:0 8px 24px}.xhs-brand-icon{width:46px;height:46px;display:grid;place-items:center;border-radius:12px;background:#355b86;box-shadow:inset 0 1px 0 #ffffff24;border:1px solid #ffffff1a}.xhs-brand-icon svg{width:27px;height:27px;color:white}.xhs-brand strong{font-size:19px;letter-spacing:.2px;color:#fff;white-space:nowrap}.xhs-brand small{display:block;font-size:12px;color:#bbc9db;margin-top:3px}.xhs-nav-label{display:block;font-size:12px;letter-spacing:.5px;color:#adbed1;padding:16px 14px 10px}.xhs-nav-divider{border-top:1px solid #ffffff18;margin-top:18px;padding-top:24px}.xhs-sidebar nav>a{display:flex;align-items:center;gap:13px;min-height:46px;padding:10px 15px;border-radius:8px;margin:4px 0;color:#e2e9f1;font-weight:500;transition:background-color .18s,color .18s}.xhs-sidebar nav>a:hover{background:#ffffff0d;color:white}.xhs-sidebar nav>a[aria-current=page]{background:#365c89;color:#fff;box-shadow:inset 3px 0 0 #dae7fa,0 2px 6px #0c1c3020}.xhs-sidebar nav>a svg{width:21px;height:21px}.xhs-back{font-size:12px;color:#b9c7d7!important;padding:28px 14px 0;margin-top:auto}.xhs-mobile-toggle{display:none}
.xhs-main{margin-left:248px;padding:22px 30px 0;min-width:0;max-width:1800px}.xhs-breadcrumb{color:#69788c;font-size:12px;margin:0 0 15px}.xhs-breadcrumb span{padding:0 12px;color:#a0adbe}.xhs-hero{position:relative;isolation:isolate;min-height:308px;border-radius:16px;overflow:hidden;background:#f8faff url(library-hero.png) center/cover no-repeat;border:1px solid #dbe4ee;box-shadow:0 6px 20px #2a476d05;padding:38px 42px;display:flex;align-items:center}.xhs-hero-copy{position:relative;max-width:720px}.xhs-hero:before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,#f8faffdb 0%,#f8faff9c 35%,#f8faff00 65%)}.xhs-eyebrow{display:block;font-size:11px;letter-spacing:2.2px;color:#5b79a2;margin-bottom:12px}.xhs-hero h1{font-family:"Songti SC","Noto Serif CJK SC",SimSun,serif;font-size:clamp(32px,3.6vw,54px);font-weight:700;letter-spacing:1px;line-height:1.3;color:#12243a;text-wrap:balance}.xhs-hero p{font-size:clamp(15px,1.45vw,21px);color:#20364e;margin:12px 0}.xhs-hero-topics{font-size:13px;color:#3f5b80;display:block;margin:15px 0 23px}.xhs-hero-topics i{font-style:normal;padding:0 12px}.xhs-actions{display:flex;flex-wrap:wrap;gap:12px}.xhs-button{border:1px solid #c9d4e2;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:43px;padding:9px 20px;border-radius:7px;background:#fff;color:#253d5c;font-size:14px;font-weight:500;line-height:1.5;transition:background-color .18s,box-shadow .18s,transform .1s}.xhs-button:hover{background:#eef3fa;box-shadow:0 3px 10px #23436612}.xhs-button:active{transform:scale(.96)}.xhs-primary{background:#315d9a!important;border-color:#315d9a;color:#fff!important}.xhs-primary:hover{background:#274e84!important}.xhs-discovery{display:flex;align-items:center;gap:14px;margin:18px 0 26px}.xhs-discovery form{min-width:180px;flex:1;display:flex;align-items:center;background:#fff;min-height:47px;border:1px solid #dce4ef;border-radius:9px;padding-left:17px;box-shadow:0 3px 12px #25416903}.xhs-discovery form>svg{color:#71839c;width:19px}.xhs-discovery input{border:0;outline:0;box-shadow:none!important;background:transparent;color:var(--xhs-text);width:100%;height:45px;padding:10px 13px;min-width:0;font-size:14px}.xhs-discovery input::placeholder{color:#758399}.xhs-discovery form button{border:0;background:transparent;color:#315d9a;white-space:nowrap;min-height:44px;padding:0 16px;font-size:13px}.xhs-quick{display:flex;gap:8px}.xhs-chip{display:inline-flex;align-items:center;justify-content:center;padding:8px 16px;min-height:38px;white-space:nowrap;border-radius:22px;background:#e6ecf4;color:#4c6380!important;font-size:12px}.xhs-chip:first-child{background:#315d9a;color:#fff!important}.xhs-chip:hover{box-shadow:inset 0 0 0 1px #9cb1cc}
#xhs-content{outline:0;scroll-margin-top:calc(var(--xhs-top) + 20px)}.xhs-section{margin-top:30px}.xhs-section-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:15px}.xhs-section-head h2{font-size:23px;color:#182a42;font-weight:650;line-height:1.4}.xhs-section-head p{font-size:14px;color:#65758a;margin-top:7px;max-width:800px}.xhs-section-head>a{display:inline-flex;gap:6px;align-items:center;color:#42638a;font-size:12px;white-space:nowrap;min-height:40px}.xhs-section-head>a svg{width:15px}.xhs-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.xhs-card{border:1px solid #e2e8f0;background:#fff;border-radius:10px;padding:20px;display:flex;flex-direction:column;box-shadow:0 3px 14px #29426103;min-width:0;transition:box-shadow .18s,border-color .18s}.xhs-card:hover{border-color:#bdcee3;box-shadow:0 7px 22px #29426109}.xhs-card-top{display:flex;align-items:center;justify-content:space-between;gap:6px;font-size:11px;color:#62738b;margin-bottom:14px}.xhs-tag{display:inline-flex;padding:2px 9px;line-height:1.65;font-size:11px;border-radius:4px;background:#edf3fa;color:#47698f}.xhs-card h3{font-size:17px;line-height:1.6;font-weight:600;overflow-wrap:anywhere}.xhs-card h3 a:hover{color:#315d9a}.xhs-card p{color:#68798e;font-size:13px;line-height:1.75;margin:8px 0 20px;flex:1}.xhs-card-bottom{font-size:11px;color:#62748c;display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:auto}.xhs-card-bottom a{display:inline-flex;gap:4px;align-items:center;color:#3f628b;min-height:32px}.xhs-card-bottom svg{width:16px}.xhs-feature{display:block;background:#fff;border:1px solid #e1e7ef;border-radius:9px;overflow:hidden;box-shadow:0 3px 14px #29426104;transition:box-shadow .2s}.xhs-feature:hover{box-shadow:0 8px 24px #29426112}.xhs-feature-image{display:block;height:115px;background-image:url(library-hero.png);background-size:300% auto;filter:saturate(.7)}.xhs-image-0{background-position:78% 70%}.xhs-image-1{background-position:60% 80%}.xhs-image-2{background-position:100% 45%}.xhs-feature-copy{display:block;position:relative;padding:13px 17px 15px}.xhs-feature-copy strong{display:block;font-size:17px;font-weight:600;color:#162a43}.xhs-feature-copy small{display:block;color:#738196;font-size:12px;margin:4px 0 8px}.xhs-feature-copy i{position:absolute;right:18px;bottom:15px;color:#6e89aa}.xhs-home-bottom{display:grid;grid-template-columns:1.25fr 1fr;gap:16px;margin-top:18px}.xhs-panel{background:#fff;border:1px solid #e1e7ef;border-radius:10px;padding:20px}.xhs-panel .xhs-section-head{margin-bottom:9px}.xhs-panel .xhs-section-head h2{font-size:20px}.xhs-reading-list>a{display:flex;align-items:center;gap:13px;padding:16px 0;border-top:1px solid #edf0f5}.xhs-reading-list>a>span:nth-child(2){flex:1;min-width:0}.xhs-reading-list strong{display:block;font-weight:550;font-size:15px}.xhs-reading-list small{display:block;color:#63748b;font-size:12px;margin-top:4px}.xhs-list-icon{height:46px;width:50px;display:grid;place-items:center;background:#edf3fa;color:#5578a3;border-radius:6px}.xhs-reading-list>a>svg{width:17px;color:#7e95b3}.xhs-map-preview{display:flex;align-items:center;justify-content:center;gap:24px;padding:18px 0}.xhs-map-center{border-radius:40px;background:#315d9a;color:#fff!important;white-space:nowrap;font-size:13px;padding:12px 18px}.xhs-map-preview>div{display:grid;gap:6px}.xhs-map-preview>div a{font-size:11px;border-left:2px solid #b6c9e2;padding:1px 12px;color:#667e9b}
.xhs-filterbar{display:flex;gap:16px;align-items:center;padding:15px 0 22px;flex-wrap:wrap}.xhs-filterbar label{display:flex;align-items:center;gap:9px;color:#5f7188;font-size:13px}.xhs-filterbar select{border:1px solid #d6dfea;background:#fff;border-radius:6px;padding:8px 30px 8px 12px;color:#29425f;min-height:40px;max-width:240px}.xhs-filterbar>span{margin-left:auto;color:#60728a;font-size:12px;font-variant-numeric:tabular-nums}.xhs-query{font-size:13px;color:#697e96}.xhs-more{text-align:center;padding:24px}.xhs-topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.xhs-topic-grid>a{background:#fff;border:1px solid #e0e7f0;border-radius:10px;padding:22px;transition:box-shadow .18s}.xhs-topic-grid>a:hover{box-shadow:0 5px 18px #2b4a7012}.xhs-topic-grid small{font-size:12px;letter-spacing:1px;color:#667d9b}.xhs-topic-grid h3{font-size:19px;margin:10px 0 8px}.xhs-topic-grid p{font-size:13px;color:#6b7c90;min-height:44px}.xhs-topic-grid span{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#4c6d97;margin-top:18px}
.xhs-empty,.xhs-loading{padding:65px 24px;background:#fff;border:1px solid #e2e8f0;border-radius:10px;text-align:center;color:#60738b}.xhs-loading{font-size:14px}.xhs-empty>svg{width:36px;height:36px;color:#8198b7;margin-bottom:16px}.xhs-empty h2,.xhs-empty h3{font-size:21px;color:#293f5b;margin-bottom:10px}.xhs-empty p{font-size:14px;margin-bottom:24px}.xhs-empty .xhs-actions{justify-content:center}.xhs-reader-top{display:flex;align-items:center;justify-content:space-between;color:#6e8199;font-size:13px;margin:0 0 17px}.xhs-reader{background:#fff;border:1px solid #e0e7ef;border-radius:12px;padding:32px 35px}.xhs-reader-heading{border-bottom:1px solid #e4eaf1;padding-bottom:25px}.xhs-reader-heading h2{font-size:29px;line-height:1.5;margin:12px 0 8px;color:#162a43;overflow-wrap:anywhere}.xhs-reader-heading p{font-size:14px;line-height:1.8;color:#6c7c92}.xhs-reader-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-top:20px}.xhs-reader-actions .xhs-button{font-size:12px;min-height:38px;padding:7px 14px}.xhs-reader-actions>span{font-size:12px;color:#60748d;margin-left:5px}.xhs-reader-actions button[aria-pressed=true]{color:#315d9a;background:#edf3fc;border-color:#a8bfdc}.xhs-reading-layout{display:grid;grid-template-columns:180px minmax(0,1fr);gap:28px;padding-top:26px}.xhs-toc{min-width:0}.xhs-toc details{position:sticky;top:calc(var(--xhs-top) + 20px);max-height:calc(100vh - var(--xhs-top) - 45px);overflow:auto;padding-right:12px;scrollbar-width:thin}.xhs-toc summary{font-size:14px;font-weight:600;padding:0 0 10px;cursor:pointer}.xhs-toc button{display:block;line-height:1.6;text-align:left;background:none;border:0;border-left:2px solid #e1e8f0;padding:7px 10px;width:100%;font-size:12px;color:#6a7e97}.xhs-toc button:hover{color:#315d9a;border-color:#315d9a;background:#f3f6fa}.xhs-toc .xhs-toc-sub{padding-left:18px;font-size:11px}.xhs-prose{max-width:860px;font-size:16px;line-height:1.85;color:#334a65;min-width:0;overflow-wrap:anywhere}.xhs-prose h1{font-size:27px;line-height:1.5;margin:0 0 25px}.xhs-prose h2{font-size:23px;margin:35px 0 15px;line-height:1.5;scroll-margin-top:calc(var(--xhs-top) + 22px)}.xhs-prose h3{font-size:19px;margin:24px 0 12px;line-height:1.5;scroll-margin-top:calc(var(--xhs-top) + 22px)}.xhs-prose h4{font-size:17px;margin:22px 0 10px}.xhs-prose p{margin:12px 0 18px}.xhs-prose ul,.xhs-prose ol{padding-left:24px;margin:14px 0}.xhs-prose li{margin:7px 0}.xhs-prose a{color:#315d9a;text-decoration:underline;text-underline-offset:3px}.xhs-prose code{font-size:13px;background:#edf2f7;border-radius:4px;padding:2px 5px;color:#355778;white-space:pre-wrap}.xhs-prose pre{background:#f4f7fa;color:#324d6b;border:1px solid #e3eaf1;border-radius:7px;padding:18px;overflow:auto;white-space:pre-wrap;line-height:1.7;font-size:13px}.xhs-prose pre code{padding:0;background:none;color:inherit}.xhs-prose blockquote{margin:18px 0;border-left:3px solid #96afd0;background:#f5f8fc;padding:3px 18px;color:#617894}.xhs-prose table{width:100%;min-width:480px;border-collapse:collapse;margin:15px 0;font-size:13px}.xhs-prose td,.xhs-prose th{border:1px solid #dfe7f0;padding:10px 12px;text-align:left}.xhs-prose th{background:#f0f4f9}.xhs-table-scroll{overflow:auto;max-width:100%}.xhs-source{margin-top:30px;border-top:1px solid #e5ebf2;padding-top:15px;font-size:12px;color:#61738c}.xhs-source summary{cursor:pointer;color:#596f8b}.xhs-source p{margin:9px 0}.xhs-source a{color:#426a9a;text-decoration:underline}.xhs-reference{background:#f4f7fb;border-radius:8px;padding:28px;margin-top:25px}.xhs-reference h3{font-size:19px}.xhs-reference p{font-size:14px;margin:12px 0 20px;color:#6b7e95}.xhs-related{border-top:1px solid #e6ebf3;margin-top:30px;padding-top:25px}.xhs-related .xhs-card{padding:15px}.xhs-related .xhs-card h3{font-size:15px}.xhs-related .xhs-section-head h2{font-size:20px}
.xhs-map-toolbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:20px 0}.xhs-map-toolbar input{border:1px solid #d5deea;border-radius:6px;padding:10px 14px;min-width:220px;flex:1;background:#fff;color:#2b4463}.xhs-map-toolbar .xhs-button{font-size:12px;padding:8px 14px;min-height:40px}.xhs-map-scroll{overflow:auto;border:1px solid #dfe7f0;background:radial-gradient(#c6d2e0 .7px,transparent .7px) 0 0/18px 18px,#fafcfe;border-radius:10px;padding:30px;min-height:440px}.xhs-map-tree{min-width:620px;transform-origin:top left}.xhs-map-root{display:table;margin:0 auto 32px;background:#315d9a;color:white;padding:13px 28px;border-radius:30px;font-size:17px}.xhs-map-branches{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));align-items:start;gap:16px}.xhs-map-branch{background:white;border:1px solid #d8e3f0;border-top:3px solid #90aacd;border-radius:8px;padding:13px 16px;box-shadow:0 3px 14px #2a416706}.xhs-map-branch summary{cursor:pointer;color:#284d7e;font-size:14px;font-weight:600}.xhs-map-branch summary small{font-size:11px;background:#edf3fa;border-radius:10px;padding:2px 7px;margin-left:8px;font-weight:400}.xhs-map-branch>div{padding:10px 0 0 8px}.xhs-map-branch a{display:block;border-left:1px solid #cedbed;padding:5px 9px;color:#607995;font-size:12px}.xhs-map-branch a:hover{background:#f0f5fb;color:#315d9a}.xhs-about{max-width:900px;padding:30px}.xhs-about h3{font-size:19px;margin:10px 0 12px}.xhs-about p{font-size:15px;line-height:1.9;color:#657991;margin-bottom:25px}.xhs-about>a{font-size:13px;text-decoration:underline;color:#315d9a}.xhs-footer{padding:30px 0 22px;display:flex;gap:20px;align-items:center;border-top:1px solid #e0e7f0;margin-top:35px;font-size:11px;color:#61748d}.xhs-footer>span{margin-right:auto}.xhs-footer>a{white-space:nowrap}.xhs-toast{position:fixed;z-index:99999;left:50%;bottom:35px;transform:translateX(-50%);max-width:calc(100vw - 32px);border-radius:8px;background:#1d3654;color:white;box-shadow:0 6px 24px #20345130;padding:12px 22px;font-size:14px}.xhs-reading .xhs-hero{display:none}.xhs-reading .xhs-discovery{margin-top:0}.xhs-noscript{padding:30px}
@media(min-width:1800px){.xhs-main{margin-left:248px;padding-left:48px;padding-right:48px}.xhs-hero{min-height:340px}}
@media(max-width:1199px){.xhs-sidebar{width:224px;padding:24px 13px}.xhs-brand{gap:9px;padding-left:4px;padding-right:0}.xhs-brand strong{font-size:17px}.xhs-brand-icon{width:39px;height:42px}.xhs-brand small{font-size:11px}.xhs-main{margin-left:224px;padding:20px 24px 0}.xhs-hero{padding:32px;min-height:285px}.xhs-hero h1{font-size:38px}.xhs-hero p{font-size:17px;max-width:470px}.xhs-discovery{flex-wrap:wrap}.xhs-discovery form{flex-basis:100%}.xhs-home-bottom{grid-template-columns:1fr 1fr}.xhs-reading-layout{grid-template-columns:150px minmax(0,1fr);gap:20px}.xhs-reader{padding:25px}.xhs-card{padding:16px}.xhs-card h3{font-size:16px}}
@media(max-width:900px){.xhs-grid,.xhs-topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.xhs-feature-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.xhs-feature-copy{padding:12px}.xhs-feature-copy strong{font-size:15px}.xhs-feature-copy i{display:none}.xhs-home-bottom{grid-template-columns:1fr}.xhs-feature-image{height:90px}.xhs-reading-layout{display:block}.xhs-toc{margin-bottom:25px}.xhs-toc details{position:static;max-height:240px;background:#f5f8fc;padding:14px;border-radius:8px}.xhs-hero h1{font-size:32px}.xhs-hero p{font-size:15px;max-width:340px}.xhs-hero-copy{max-width:430px}.xhs-hero-topics{font-size:12px}.xhs-hero .xhs-button{font-size:13px;padding:10px 13px}}
@media(max-width:760px){.xhs-base{--xhs-top:64px}.xhs-sidebar{position:relative;top:auto;left:auto;bottom:auto;width:100%;padding:15px 18px;overflow:visible;display:block}.xhs-brand{padding:0;max-width:calc(100% - 120px)}.xhs-brand strong{font-size:18px}.xhs-brand-icon{height:39px;width:39px}.xhs-brand small{font-size:11px}.xhs-mobile-toggle{display:flex;position:absolute;right:18px;top:19px;align-items:center;gap:6px;color:#e0e9f6;border:1px solid #56708e;background:#233e5c;border-radius:6px;padding:7px 10px;font-size:12px;min-height:40px}.xhs-mobile-toggle svg{width:17px}.xhs-sidebar nav{display:none;padding:12px 0 0}.xhs-mobile-open .xhs-sidebar nav{display:block}.xhs-sidebar nav>a{min-height:44px;font-size:14px}.xhs-sidebar .xhs-back{display:none}.xhs-main{margin-left:0;padding:18px 16px 0}.xhs-breadcrumb{font-size:11px;margin-bottom:12px}.xhs-hero{padding:25px 23px;min-height:270px;border-radius:11px;background-position:62% center}.xhs-hero:before{background:linear-gradient(90deg,#f8fafff5 0%,#f8faffdf 45%,#f8faff28 100%)}.xhs-eyebrow{font-size:8px;letter-spacing:1.4px;margin-bottom:12px}.xhs-hero h1{font-size:32px;letter-spacing:0}.xhs-hero p{font-size:14px;line-height:1.8;max-width:270px}.xhs-hero-topics{font-size:11px;margin:12px 0 18px}.xhs-hero-topics i{padding:0 7px}.xhs-actions{gap:9px}.xhs-hero .xhs-button{min-height:42px;padding:9px 12px;font-size:12px}.xhs-hero .xhs-button svg{width:16px}.xhs-discovery{margin:14px 0 23px;gap:10px}.xhs-quick{width:100%;overflow:auto;padding-bottom:3px}.xhs-chip{font-size:11px;padding:7px 14px;min-height:35px}.xhs-discovery input{font-size:13px;padding-left:9px}.xhs-discovery form{padding-left:12px}.xhs-discovery form button{padding:0 12px}.xhs-section-head h2{font-size:21px}.xhs-section-head p{font-size:13px;line-height:1.8}.xhs-section-head>a{font-size:11px}.xhs-feature-grid{grid-template-columns:1fr}.xhs-feature{display:grid;grid-template-columns:100px minmax(0,1fr)}.xhs-feature-image{height:100%;min-height:115px;background-size:auto 140%}.xhs-feature-copy{padding:13px 16px}.xhs-feature-copy strong{font-size:17px}.xhs-feature-copy small{font-size:12px}.xhs-feature-copy i{display:block}.xhs-grid,.xhs-topic-grid{grid-template-columns:1fr;gap:12px}.xhs-home-bottom{margin-top:16px}.xhs-panel{padding:16px}.xhs-reading-list strong{font-size:14px}.xhs-reading-list small{font-size:11px}.xhs-card{padding:18px}.xhs-card h3{font-size:18px}.xhs-card p{font-size:14px}.xhs-filterbar{gap:10px;padding-bottom:18px}.xhs-filterbar label{font-size:12px;flex-wrap:wrap;gap:5px}.xhs-filterbar select{font-size:12px;max-width:155px}.xhs-filterbar>span{width:100%;margin-left:0}.xhs-reader{padding:22px 18px;border-radius:9px}.xhs-reader-heading h2{font-size:25px}.xhs-reader-heading p{font-size:13px}.xhs-reader-actions{gap:7px}.xhs-prose{font-size:16px;line-height:1.85}.xhs-prose h1{font-size:24px}.xhs-prose h2{font-size:21px}.xhs-prose h3{font-size:18px}.xhs-prose pre{padding:13px;font-size:12px}.xhs-prose table{font-size:12px}.xhs-reader .xhs-related{margin-left:-1px;margin-right:-1px}.xhs-map-scroll{padding:20px 16px}.xhs-map-toolbar input{flex-basis:100%;min-width:0}.xhs-footer{flex-wrap:wrap;gap:12px;padding:24px 0 20px}.xhs-footer>span{width:100%;font-size:11px}.xhs-empty{padding:45px 18px}.xhs-empty .xhs-button{font-size:13px}.xhs-skip{left:15px}.xhs-skip:focus{top:70px}.xhs-about{padding:22px}.xhs-about p{font-size:14px}}
@media(prefers-reduced-motion:reduce){.xhs-base *{scroll-behavior:auto!important;transition:none!important}}

@media(max-width:380px){.xhs-brand{gap:8px;max-width:calc(100% - 105px)}.xhs-brand-icon{width:32px;height:36px}.xhs-brand-icon svg{width:22px;height:22px}.xhs-brand strong{font-size:16px}.xhs-brand small{font-size:10px}.xhs-mobile-toggle{font-size:11px;padding:7px 8px}.xhs-hero h1{font-size:29px}}

/* The existing theme fills all SVGs; retain line icons inside this base. */
.xhs-base svg{fill:none!important;stroke:currentColor!important}
/* Preserve the original guide and contact actions in the page footer, clear of reading content. */
body.zmt-xhs-page .guide-shell__launcher{position:relative!important;inset:auto!important;transform:none!important;margin:20px 30px 20px 278px!important}
body.zmt-xhs-page .zmt-contact-floating{position:relative!important;inset:auto!important;transform:none!important;margin:12px 30px 24px 278px!important;width:max-content}
@media(max-width:760px){body.zmt-xhs-page .guide-shell__launcher{margin:18px 16px!important;max-width:calc(100vw - 32px)}body.zmt-xhs-page .zmt-contact-floating{margin:12px 16px 24px!important}}

/* XHS scoped site footer repair 0.1.2: align site chrome with the content rail. */
body.zmt-xhs-page{--xhs-rail:248px;--xhs-gutter:30px}
body.zmt-xhs-page #xhs-base~footer.footer{display:block!important;box-sizing:border-box;margin:0 0 0 var(--xhs-rail)!important;width:calc(100% - var(--xhs-rail));max-width:1800px;padding:24px var(--xhs-gutter) 18px!important;background:#f2f5f8;border-top:1px solid #e0e7ef;color:#69798c}
body.zmt-xhs-page #xhs-base~footer.footer .container-footer{box-sizing:border-box;width:100%;max-width:none;margin:0;padding:0}
body.zmt-xhs-page #xhs-base~footer.footer .footer-contact-box{display:block;margin:0;padding:0;list-style:none}
body.zmt-xhs-page #xhs-base~footer.footer .footer-contact-box>li:first-child{display:flex;align-items:center;flex-wrap:wrap;gap:14px 24px;width:100%;max-width:none!important;margin:0;padding:0}
body.zmt-xhs-page #xhs-base~footer.footer .footer-contact-box>li:not(:first-child){display:none}
body.zmt-xhs-page #xhs-base~footer.footer .footer-contact-box>li:first-child>p{flex:none;margin:0}
body.zmt-xhs-page #xhs-base~footer.footer .footer-logo{display:inline-flex!important;align-items:center;margin:0}
body.zmt-xhs-page #xhs-base~footer.footer .footer-logo img{display:block;height:36px!important;width:auto;max-width:160px;object-fit:contain}
body.zmt-xhs-page #xhs-base~footer.footer .footer-muted{flex:1;min-width:0;font-size:12px;line-height:1.9}
body.zmt-xhs-page #xhs-base~footer.footer .zmt-footer-layout{display:flex;flex-direction:column;align-items:flex-start;gap:6px;margin:0;padding:0}
body.zmt-xhs-page #xhs-base~footer.footer .zmt-footer-intro p{margin:0;font-size:12px}
body.zmt-xhs-page #xhs-base~footer.footer .zmt-footer-empty{position:static;inset:auto;margin:0;width:auto}
body.zmt-xhs-page #xhs-base~footer.footer #zmt-icp-footer-source{position:static;display:flex;flex-wrap:wrap;align-items:center;gap:4px 14px;width:auto;max-width:100%;margin:0;padding:0;font-size:12px}
body.zmt-xhs-page #xhs-base~footer.footer .zmt-filing-link{display:inline-flex;align-items:center;gap:5px;min-height:24px}
body.zmt-xhs-page>.guide-shell{display:inline-block!important;position:static!important;width:auto;height:auto;margin:10px 0 24px calc(var(--xhs-rail) + var(--xhs-gutter));padding:0;vertical-align:top}
body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher{position:static!important;inset:auto!important;display:inline-flex!important;align-items:center;justify-content:center;width:auto!important;height:44px!important;min-height:44px;max-width:100%;margin:0!important;padding:0 14px!important;transform:none!important;border:1px solid #d4deea!important;border-radius:8px!important;background:#fff!important;box-shadow:0 2px 8px #213b5a06!important;cursor:pointer;vertical-align:top}
body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher-character,body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher-kicker,body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher-arrow{display:none!important}
body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher-copy{position:static!important;inset:auto!important;display:flex!important;align-items:center;gap:8px;width:auto!important;height:auto!important;min-height:0;padding:0!important;margin:0!important;border:0!important;border-radius:0!important;transform:none!important;box-shadow:none!important;background:transparent!important;text-align:left}
body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher-copy:before,body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher-copy:after,body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher:before,body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher:after{display:none!important}
body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher-copy strong{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif!important;font-size:14px!important;font-weight:600!important;line-height:1.5!important;letter-spacing:0!important;color:#294460!important}
body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher-copy small{font-size:12px!important;line-height:1.5!important;color:#6a7c92!important;white-space:nowrap}
body.zmt-xhs-page>.zmt-contact-floating{display:inline-flex!important;position:static!important;inset:auto!important;transform:none!important;width:auto!important;height:44px;max-width:calc(100% - 32px);margin:10px 0 24px 10px!important;padding:0;vertical-align:top}
body.zmt-xhs-page .zmt-contact-launcher{box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;min-height:44px;padding:0 14px;border:1px solid #d4deea;border-radius:8px;background:#fff;color:#294460;font-size:14px;box-shadow:0 2px 8px #213b5a06}
body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher:focus-visible,body.zmt-xhs-page .zmt-contact-launcher:focus-visible{outline:2px solid #315d9a!important;outline-offset:3px}
@media(min-width:1800px){body.zmt-xhs-page{--xhs-gutter:48px}}
@media(max-width:1199px){body.zmt-xhs-page{--xhs-rail:224px;--xhs-gutter:24px}}
@media(max-width:760px){body.zmt-xhs-page{--xhs-rail:0px;--xhs-gutter:16px}body.zmt-xhs-page #xhs-base~footer.footer{padding-top:20px!important}body.zmt-xhs-page #xhs-base~footer.footer .footer-contact-box>li:first-child{align-items:flex-start;gap:12px}body.zmt-xhs-page #xhs-base~footer.footer .footer-muted{flex-basis:100%}body.zmt-xhs-page #xhs-base~footer.footer .footer-logo img{height:30px!important}body.zmt-xhs-page>.guide-shell{margin:8px 0 24px 16px!important}body.zmt-xhs-page>.zmt-contact-floating{margin:8px 0 24px 8px!important}body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher-copy small{display:none!important}}
body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher{min-width:0!important;min-height:44px!important;max-height:44px!important;visibility:visible!important;pointer-events:auto!important}
body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher-copy{min-width:0!important;min-height:0!important}
body.zmt-xhs-page #xhs-base~footer.footer .container-footer{padding:0!important}

body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher-copy{block-size:auto!important;inline-size:auto!important;min-block-size:0!important;max-block-size:none!important;padding:0!important}
body.zmt-xhs-page #xhs-base~footer.footer .footer-logo img{width:auto!important;height:36px!important;max-width:160px!important}
@media(max-width:760px){body.zmt-xhs-page #xhs-base~footer.footer .footer-logo img{height:30px!important;max-width:140px!important}}

/* Static utility labels must not inherit the floating mascot's mobile screen-reader-only treatment. */
body.zmt-xhs-page #xhs-base~.guide-shell .guide-shell__launcher-copy strong{position:static!important;inset:auto!important;display:block!important;width:auto!important;height:auto!important;inline-size:auto!important;block-size:auto!important;min-width:0!important;min-height:0!important;margin:0!important;padding:0!important;clip:auto!important;clip-path:none!important;overflow:visible!important;white-space:nowrap!important}
body.zmt-xhs-page #xhs-base~.zmt-contact-floating .zmt-contact-launcher span{font-size:14px!important;line-height:1.5!important}
body.zmt-xhs-page #xhs-base~.zmt-contact-floating .zmt-contact-launcher span:after{content:none!important;display:none!important}