:root{--sbk-ink:#142a3b;--sbk-muted:#516575;--sbk-line:#dbe3e8;--sbk-soft:#f4f7f8;--sbk-paper:#fff;--sbk-accent:#d96335;--sbk-link:#116174;--sbk-max:1160px}
*{box-sizing:border-box}
body.sbk-ui{margin:0;background:var(--sbk-paper);color:var(--sbk-ink);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.72;-webkit-font-smoothing:antialiased}
body.sbk-ui h1,body.sbk-ui h2,body.sbk-ui h3,body.sbk-ui h4{font-family:inherit;color:var(--sbk-ink);line-height:1.28;letter-spacing:-.025em;font-weight:700}
.sbk-ui h1,.sbk-ui h2,.sbk-ui h3,.sbk-ui h4{margin:0}
body.sbk-ui p{color:var(--sbk-muted);line-height:1.78;margin:0}
body.sbk-ui a{color:inherit;text-decoration:none}
body.sbk-ui a:hover{color:var(--sbk-link)}
body.sbk-ui button,body.sbk-ui input{font:inherit}
body.sbk-ui button,body.sbk-ui summary,body.sbk-ui label[role=button]{cursor:pointer}
body.sbk-ui :focus-visible{outline:3px solid #f39b72;outline-offset:3px}
.sbk-shell{width:min(var(--sbk-max),calc(100% - 48px));margin-inline:auto}
.sbk-skip{position:absolute;top:-100px;left:16px;z-index:9999;background:#fff;padding:8px 16px}.sbk-skip:focus{top:8px}
.sbk-kicker{color:var(--sbk-accent)!important;font-size:.75rem;font-weight:800;letter-spacing:.14em;line-height:1.4!important;text-transform:uppercase;margin-bottom:18px!important}
.sbk-site-header{position:relative;z-index:50;border-bottom:1px solid var(--sbk-line);background:rgba(255,255,255,.97)}
.sbk-header-inner{min-height:80px;display:flex;align-items:center;gap:24px}
.sbk-brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;min-width:204px;color:var(--sbk-ink)!important}
.sbk-brand-mark{width:34px;height:34px;display:grid;place-items:center;border:1.5px solid var(--sbk-ink);font-weight:800;letter-spacing:-.09em;line-height:1}.sbk-brand-mark span{color:var(--sbk-accent)}
.sbk-brand>span:last-child{display:grid;line-height:1.1;gap:5px}.sbk-brand strong{font-size:1.07rem;letter-spacing:-.045em}.sbk-brand small{font-size:.66rem;color:var(--sbk-muted);font-weight:600;letter-spacing:.02em}
.sbk-desktop-nav{display:flex;gap:17px;align-items:center;justify-content:flex-end;flex:1}.sbk-desktop-nav a{font-size:.77rem;font-weight:700;white-space:nowrap;padding:11px 0;border-bottom:2px solid transparent}.sbk-desktop-nav a:hover,.sbk-desktop-nav a[aria-current=page]{color:var(--sbk-link);border-color:var(--sbk-accent)}
.sbk-header-search{position:relative;flex-shrink:0;font-size:.78rem;font-weight:700}.sbk-header-search summary{list-style:none;border-left:1px solid var(--sbk-line);padding:9px 0 9px 16px;white-space:nowrap}.sbk-header-search summary::-webkit-details-marker{display:none}.sbk-header-search summary span{font-size:1.35rem;vertical-align:-.1em;margin-left:4px}.sbk-header-search-panel{position:absolute;right:0;top:calc(100% + 19px);width:340px;padding:16px;background:#fff;border:1px solid var(--sbk-line);box-shadow:0 16px 30px rgba(20,42,59,.12)}
.sbk-mobile-nav{display:none}
.sbk-search{display:flex;align-items:stretch;border:1px solid #bfcfd7;background:#fff;min-height:52px;max-width:570px}.sbk-search:focus-within{border-color:var(--sbk-link)}.sbk-search input{min-width:0;flex:1;border:0;background:transparent;color:var(--sbk-ink);padding:10px 15px;outline:0}.sbk-search button{border:0;border-left:1px solid var(--sbk-line);background:var(--sbk-ink);color:#fff;padding:9px 18px;font-weight:700;white-space:nowrap}.sbk-search button:hover{background:var(--sbk-link)}
.sbk-hero{background:#f7f9f9;border-bottom:1px solid var(--sbk-line);padding:76px 0 74px}.sbk-hero-grid{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(260px,.8fr);gap:64px;align-items:center}.sbk-hero h1{font-size:clamp(2.15rem,4.1vw,3.8rem);max-width:800px;line-height:1.2;margin-bottom:24px}.sbk-hero-lead{font-size:1.08rem;max-width:690px;margin-bottom:30px!important}.sbk-hero-topics{display:flex;align-items:center;gap:15px;flex-wrap:wrap;margin-top:22px;font-size:.8rem}.sbk-hero-topics span{color:#73838d}.sbk-hero-topics a{text-decoration:underline!important;text-decoration-color:#b9c8ce!important;text-underline-offset:4px;font-weight:650}
.sbk-hero-index{border-left:2px solid var(--sbk-accent);padding:8px 0 8px 28px}.sbk-hero-index>span{display:block;color:var(--sbk-accent);font-size:.74rem;font-weight:800;letter-spacing:.14em;margin-bottom:16px}.sbk-hero-index>strong{display:block;font-size:1.38rem;line-height:1.35;max-width:220px;margin-bottom:14px}.sbk-hero-index>p{font-size:.9rem;margin-bottom:22px!important}.sbk-hero-index>div{display:grid;grid-template-columns:auto 1fr;gap:5px 10px;align-items:baseline;border-top:1px solid var(--sbk-line);padding-top:18px}.sbk-hero-index b{font-size:1.25rem}.sbk-hero-index div span{font-size:.76rem;color:var(--sbk-muted)}
.sbk-section{padding:86px 0}.sbk-soft{background:var(--sbk-soft)}.sbk-section-head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:34px}.sbk-section-head h2{font-size:clamp(1.65rem,2.5vw,2.5rem)}.sbk-section-head>p{max-width:390px;font-size:.93rem}
.sbk-pillar-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--sbk-line);border-left:1px solid var(--sbk-line)}.sbk-pillar-card{display:flex;flex-direction:column;min-height:280px;padding:26px 28px 23px;border-right:1px solid var(--sbk-line);border-bottom:1px solid var(--sbk-line);background:#fff;transition:background .15s}.sbk-pillar-card:hover{background:#f9fbfb}.sbk-number{display:block;color:var(--sbk-accent);font-size:.72rem;font-weight:800;letter-spacing:.1em;margin-bottom:22px}.sbk-pillar-card h3{font-size:1.28rem;margin-bottom:13px}.sbk-pillar-card strong{font-size:.88rem;line-height:1.5;margin-bottom:5px}.sbk-pillar-card p{font-size:.85rem}.sbk-arrow{display:inline-block;color:var(--sbk-link)!important;font-size:.82rem;font-weight:800;margin-top:auto;padding-top:20px}
.sbk-feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.sbk-feature-card{min-height:260px;padding:28px;background:#fff;border:1px solid var(--sbk-line);display:flex;flex-direction:column}.sbk-feature-card h3{font-size:1.35rem;max-width:450px;margin-bottom:13px}.sbk-feature-card p{font-size:.9rem;max-width:500px}.sbk-feature-card .sbk-number{margin-bottom:18px}
.sbk-split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:90px;align-items:center}.sbk-split h2{font-size:clamp(1.8rem,2.9vw,2.75rem);margin-bottom:18px}.sbk-split p{max-width:650px}.sbk-inline-links{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:26px}.sbk-inline-links a{color:var(--sbk-link)!important;font-size:.88rem;font-weight:750;border-bottom:1px solid #9ab9bf;padding-bottom:3px}.sbk-process{display:grid;grid-template-columns:auto 1fr;gap:12px 18px;border:1px solid var(--sbk-line);background:#fff;padding:34px}.sbk-process span{color:var(--sbk-accent);font-size:.72rem;font-weight:800;letter-spacing:.07em}.sbk-process strong{font-size:1.03rem;border-bottom:1px solid var(--sbk-line);padding-bottom:12px}.sbk-process strong:last-child{border:0;padding-bottom:0}.sbk-guide-list{display:flex;flex-direction:column;background:#fff;border:1px solid var(--sbk-line);padding:27px 31px}.sbk-guide-list h3{font-size:1rem;margin-bottom:15px}.sbk-guide-list a{padding:12px 0;border-top:1px solid var(--sbk-line);font-size:.9rem;font-weight:650}
.sbk-latest-list{border-top:1px solid var(--sbk-line)}.sbk-latest-list>a{display:grid;grid-template-columns:130px 1fr auto;gap:24px;align-items:center;border-bottom:1px solid var(--sbk-line);padding:20px 7px}.sbk-latest-list time{font-size:.78rem;color:var(--sbk-muted)}.sbk-latest-list strong{font-size:1rem}.sbk-latest-list span{color:var(--sbk-link)}
.sbk-trust{border-top:1px solid var(--sbk-line)}.sbk-trust-note{border-top:3px solid var(--sbk-accent);padding:28px;background:#f4f7f8}.sbk-trust-note span{display:block;color:var(--sbk-accent);font-size:.73rem;font-weight:800;letter-spacing:.1em;margin-bottom:40px}.sbk-trust-note strong{display:block;font-size:1.5rem;line-height:1.4;margin-bottom:18px}.sbk-trust-note p{font-size:.8rem}
.sbk-contact-strip{background:#183246;color:#fff;padding:56px 0}.sbk-contact-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.sbk-contact-inner h2{color:#fff!important;font-size:1.7rem;margin-bottom:10px}.sbk-contact-inner p:not(.sbk-kicker){color:#c9d7dd;max-width:650px}.sbk-button{display:inline-flex;align-items:center;gap:18px;background:#fff;color:var(--sbk-ink);padding:14px 24px;font-weight:800;white-space:nowrap}
.sbk-site-footer{background:#0d2333;color:#e8eef0;padding:60px 0 25px}.sbk-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:60px}.sbk-footer-grid strong{display:block;color:#fff;margin-bottom:18px}.sbk-footer-brand{font-size:1.45rem;letter-spacing:-.06em}.sbk-footer-brand span{color:var(--sbk-accent)}.sbk-footer-grid p{color:#aebdc6;max-width:320px;font-size:.88rem;margin-bottom:16px!important}.sbk-footer-grid a{color:#d6e2e7!important;font-size:.86rem}.sbk-footer-grid a:hover{text-decoration:underline}.sbk-footer-grid ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}.sbk-footer-bottom{border-top:1px solid #294254;display:flex;justify-content:space-between;gap:20px;margin-top:52px;padding-top:22px;color:#9cb0bc;font-size:.76rem}
.sbk-breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:.76rem;color:#6b7d88;margin-bottom:28px}.sbk-breadcrumb a{color:var(--sbk-link)!important}.sbk-breadcrumb span:last-child{max-width:85ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sbk-article-shell{padding-top:42px;padding-bottom:100px}.sbk-article-heading{max-width:830px;border-bottom:1px solid var(--sbk-line);padding-bottom:32px;margin-bottom:38px}.sbk-article-heading h1{font-size:clamp(2rem,3.7vw,3.3rem);line-height:1.22;margin-bottom:18px}.sbk-article-deck{font-size:1rem;max-width:760px}.sbk-article-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(200px,230px);gap:90px;align-items:start}.sbk-article-body{min-width:0}.sbk-content{font-size:1rem;color:#243b4c;line-height:1.85}.sbk-content>p:first-of-type{background:#f4f8f8;border-left:3px solid var(--sbk-link);padding:18px 21px;margin-top:0!important;font-size:1.06rem}.sbk-content p{margin:0 0 1.35em;color:#243b4c;line-height:1.85}.sbk-content p strong{color:var(--sbk-ink)}.sbk-content h2{font-size:1.55rem;margin:2.5em 0 .85em;padding-bottom:.45em;border-bottom:1px solid var(--sbk-line);scroll-margin-top:24px}.sbk-content h3{font-size:1.17rem;margin:1.9em 0 .65em}.sbk-content ul,.sbk-content ol{margin:0 0 1.5em;padding-left:1.55em}.sbk-content li{padding-left:.1em;margin:.35em 0}.sbk-content a{color:var(--sbk-link)!important;text-decoration:underline!important;text-underline-offset:3px}.sbk-content table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:1.4em 0 2em;font-size:.9rem}.sbk-content th,.sbk-content td{border:1px solid var(--sbk-line);padding:10px 13px;text-align:left;vertical-align:top;min-width:120px}.sbk-content th{background:#edf2f4;color:var(--sbk-ink)}.sbk-content pre{max-width:100%;overflow:auto;background:#102836;color:#f0f4f6;padding:18px}.sbk-content code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.88em}.sbk-content blockquote{border-left:3px solid var(--sbk-accent);padding:4px 0 4px 18px;margin:1.7em 0;color:var(--sbk-muted);background:transparent}.sbk-content img{max-width:100%;height:auto}.sbk-content .sbk-byline{font-size:.78rem;color:var(--sbk-muted);margin:0 0 22px}.sbk-content .sbk-byline a{font-weight:700}.sbk-content .sbk-article-end{border-top:2px solid var(--sbk-ink);padding:26px 0 0;margin-top:45px}.sbk-content .sbk-article-end h2{font-size:1.12rem;margin:0 0 16px;border:0;padding:0}.sbk-content .sbk-article-end ul{margin-bottom:18px}.sbk-content .sbk-article-end p{font-size:.9rem}.sbk-content .sbk-wechat-link{color:var(--sbk-link);text-decoration:underline;cursor:pointer}.sbk-article-publisher{margin-top:32px;border:1px solid var(--sbk-line);padding:20px 24px;background:#fbfcfc}.sbk-article-publisher strong{font-size:.9rem}.sbk-article-publisher p{font-size:.83rem;margin-top:6px}.sbk-article-publisher a{color:var(--sbk-link)!important;text-decoration:underline!important}.sbk-article-aside{position:sticky;top:28px}.sbk-toc{border-top:2px solid var(--sbk-ink);padding-top:18px}.sbk-toc>strong{font-size:.84rem}.sbk-toc ol{margin:13px 0 0;padding-left:18px;color:var(--sbk-muted);font-size:.79rem;line-height:1.55}.sbk-toc li{margin:9px 0}.sbk-toc a:hover{color:var(--sbk-link)}.sbk-side-cta{background:#f3f7f7;padding:20px;margin-top:28px}.sbk-side-cta span{font-size:.76rem;font-weight:800}.sbk-side-cta p{font-size:.79rem;margin:7px 0 13px!important}.sbk-side-cta label{font-size:.82rem;font-weight:800;color:var(--sbk-link)}
.sbk-topic-hero{background:#f5f8f8;border-bottom:1px solid var(--sbk-line);padding:42px 0 60px}.sbk-topic-hero h1{font-size:clamp(2.1rem,3.7vw,3.3rem);margin-bottom:17px}.sbk-topic-lead{font-size:1.08rem;max-width:760px}.sbk-topic-intent{display:flex;flex-wrap:wrap;align-items:center;gap:12px 25px;border-top:1px solid var(--sbk-line);margin-top:32px;padding-top:20px;font-size:.86rem}.sbk-topic-intent strong{color:var(--sbk-ink)}.sbk-topic-intent span{color:var(--sbk-muted)}.sbk-question-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.sbk-question-grid>a{display:grid;grid-template-columns:46px 1fr auto;gap:12px;align-items:center;border:1px solid var(--sbk-line);padding:20px 22px;background:#fff;min-height:92px}.sbk-question-grid .sbk-number{margin:0}.sbk-question-grid strong{font-size:.96rem;line-height:1.5}.sbk-question-grid a>span:last-child{color:var(--sbk-link)}.sbk-topic-list{border-top:1px solid var(--sbk-line)}.sbk-topic-list article{display:flex;justify-content:space-between;align-items:center;gap:26px;border-bottom:1px solid var(--sbk-line);padding:24px 5px}.sbk-topic-list time,.sbk-search-results time{font-size:.76rem;color:var(--sbk-muted)}.sbk-topic-list h3{font-size:1.15rem;margin:6px 0}.sbk-topic-list p{font-size:.86rem;max-width:850px}.sbk-topic-list .sbk-arrow{padding:0;white-space:nowrap}.sbk-topic-bottom{display:grid;grid-template-columns:1fr .8fr;gap:70px}.sbk-topic-bottom h2{font-size:1.55rem}.sbk-topic-editorial{border-left:2px solid var(--sbk-accent);padding-left:23px}.sbk-topic-editorial strong{font-size:.9rem}.sbk-topic-editorial p{font-size:.83rem;margin:8px 0!important}.sbk-topic-editorial a{font-size:.83rem;color:var(--sbk-link)!important;font-weight:700}
.sbk-page-shell{padding:42px 0 100px;max-width:860px}.sbk-page-shell h1{font-size:clamp(2rem,3.5vw,3rem);margin-bottom:30px}.sbk-page-content{max-width:760px}.sbk-search-page{padding:66px 0 100px;max-width:860px}.sbk-search-page h1{font-size:2.5rem;margin-bottom:12px}.sbk-search-page .sbk-search{margin:25px 0 40px}.sbk-search-results article{border-top:1px solid var(--sbk-line);padding:22px 0}.sbk-search-results h2{font-size:1.25rem;margin:6px 0}.sbk-search-results p{font-size:.88rem}
body.sbk-ui .navigation.pagination{margin:30px 0}body.sbk-ui .page-numbers{display:inline-block;padding:8px 12px;border:1px solid var(--sbk-line);margin-right:5px}
body.sbk-ui .sb-wechat-consult{z-index:1000}body.sbk-ui .sb-wechat-toggle{box-shadow:0 7px 22px rgba(20,42,59,.16)}
.sbk-ui .sb-wechat-consult{left:auto;right:20px;bottom:20px;width:auto}.sbk-ui .sb-wechat-toggle{display:flex;background:var(--sbk-ink);border-radius:3px;min-height:44px}.sbk-ui .sb-wechat-panel{display:none;position:absolute;right:0;bottom:54px;width:184px;margin:0}.sbk-ui .sb-wechat-consult input:checked~.sb-wechat-panel{display:block}.sbk-ui .sb-wechat-close{display:block;margin-top:7px;color:var(--sbk-muted);font-size:12px;text-decoration:underline;cursor:pointer}
.sbk-ui .mystickyelements-fixed{display:none!important}
@media(max-width:1180px){.sbk-desktop-nav{gap:11px}.sbk-desktop-nav a{font-size:.71rem}.sbk-brand{min-width:182px}.sbk-article-layout{gap:44px}}
@media(max-width:980px){.sbk-desktop-nav,.sbk-header-search{display:none}.sbk-header-inner{justify-content:space-between}.sbk-mobile-nav{display:block;position:relative}.sbk-mobile-nav summary{list-style:none;font-size:.84rem;font-weight:800;border:1px solid var(--sbk-line);padding:8px 12px}.sbk-mobile-nav summary::-webkit-details-marker{display:none}.sbk-mobile-nav summary span{margin-left:8px}.sbk-mobile-nav>nav{position:absolute;right:0;top:calc(100% + 14px);width:min(340px,calc(100vw - 32px));display:grid;background:#fff;border:1px solid var(--sbk-line);box-shadow:0 20px 30px rgba(20,42,59,.14);padding:14px}.sbk-mobile-nav nav>a{padding:9px 6px;border-bottom:1px solid var(--sbk-line);font-size:.87rem;font-weight:700}.sbk-mobile-nav .sbk-search{margin-top:14px}.sbk-hero-grid,.sbk-split{gap:38px}.sbk-pillar-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.sbk-article-layout{grid-template-columns:minmax(0,1fr)}.sbk-article-aside{position:static;grid-row:1;display:grid;grid-template-columns:1fr 220px;gap:20px}.sbk-toc ol{display:flex;flex-wrap:wrap;gap:6px 18px;list-style:none;padding:0}.sbk-toc li{margin:5px 0}.sbk-side-cta{margin:0}.sbk-footer-grid{gap:30px}}
@media(max-width:700px){.sbk-shell{width:min(100% - 32px,var(--sbk-max))}.sbk-header-inner{min-height:68px}.sbk-brand{min-width:0}.sbk-brand small{font-size:.61rem}.sbk-hero{padding:52px 0}.sbk-hero-grid,.sbk-split,.sbk-topic-bottom,.sbk-footer-grid{grid-template-columns:1fr}.sbk-hero-index{display:none}.sbk-hero h1{font-size:2.25rem}.sbk-hero-lead{font-size:.96rem}.sbk-hero-topics{gap:8px 15px}.sbk-hero-topics span{width:100%}.sbk-section{padding:58px 0}.sbk-section-head{display:block;margin-bottom:24px}.sbk-section-head>p{margin-top:10px}.sbk-pillar-grid,.sbk-feature-grid,.sbk-question-grid{grid-template-columns:1fr}.sbk-pillar-card{min-height:225px;padding:22px}.sbk-feature-card{min-height:220px;padding:22px}.sbk-split{gap:30px}.sbk-split h2{font-size:1.85rem}.sbk-process{padding:22px}.sbk-latest-list>a{grid-template-columns:1fr auto;gap:4px 10px}.sbk-latest-list time{grid-column:1/-1}.sbk-contact-inner{display:block}.sbk-contact-inner .sbk-button{margin-top:24px}.sbk-site-footer{padding-top:50px}.sbk-footer-grid{gap:32px}.sbk-footer-bottom{display:block;margin-top:35px}.sbk-footer-bottom span{display:block;margin-bottom:6px}.sbk-article-shell{padding-top:28px;padding-bottom:70px}.sbk-article-heading{margin-bottom:26px;padding-bottom:24px}.sbk-article-heading h1{font-size:2rem}.sbk-article-aside{display:block}.sbk-toc{margin-bottom:22px}.sbk-toc ol{display:block;columns:1}.sbk-side-cta{display:none}.sbk-content h2{font-size:1.35rem}.sbk-content h3{font-size:1.09rem}.sbk-content>p:first-of-type{padding:15px}.sbk-topic-hero{padding:28px 0 45px}.sbk-topic-hero h1{font-size:2.1rem}.sbk-topic-list article{align-items:flex-start}.sbk-topic-list .sbk-arrow{display:none}.sbk-topic-bottom{gap:28px}.sbk-page-shell{padding:28px 0 70px}}

/* QR display standard; override the saved widget's historical dimensions. */
.sbk-ui .sb-wechat-consult .sb-wechat-panel{width:min(208px,calc(100vw - 24px))}
.sbk-ui .sb-wechat-consult .sb-wechat-qr{display:block;width:min(180px,70vw)!important;max-width:100%;height:auto!important;aspect-ratio:1 / 1;object-fit:contain;margin-inline:auto;background:#fff}
@media(min-width:768px){.sbk-ui .sb-wechat-consult .sb-wechat-toggle{padding:16px;border-radius:8px}}

@media(min-width:768px){.sbk-ui .sb-wechat-consult{width:208px}.sbk-ui .sb-wechat-panel{display:block;position:static;margin-bottom:8px}.sbk-ui .sb-wechat-close{display:none}}