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:root{--blue:#153df4;--navy:#111b38;--lime:#c8f65a;--muted:#667087;--line:#dce1eb;--paper:#f5f7fb;--white:#fff;font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--navy);background:#fff;font-synthesis:none}*{box-sizing:border-box}body{margin:0;font-size:16px;line-height:1.7}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #4266fd;outline-offset:5px}img{max-width:100%;display:block}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.35}h2{font-size:clamp(26px,2.65vw,38px);letter-spacing:-.04em}h3{font-size:23px}small{font-size:14px}.skip-link{position:fixed;top:-100px;background:var(--navy);color:white;padding:12px;z-index:10}.skip-link:focus{top:0}.site-header{max-width:1400px;margin:auto;padding:25px 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.button{margin-left:auto;flex-shrink:0}.site-footer{max-width:1400px;background:var(--paper);padding:44px 6% 22px;margin:auto;border-top:1px solid var(--line)}.footer-main{display:flex;justify-content:space-between;gap:30px;align-items:center;padding-bottom:34px}.footer-main>div{display:flex;gap:24px;font-size:14px;color:var(--muted)}.footer-bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#7c879a}.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);background:var(--navy);color:white;padding:11px 22px;box-shadow:0 8px 32px #111b3822;border-radius:5px;z-index:50;max-width:90%;font-size:14px}.toast[hidden]{display:none}
@media(min-width:1600px){.hero-copy{padding-top:70px}.hero{min-height:590px}}
@media(max-width:1000px){.site-header{gap:12px}.site-header nav{gap:17px;font-size:14px}.brand{font-size:20px}.header-cta{display:none}.hero-copy{padding:45px 8% 30px}.hero h1{font-size:37px}.hero-actions{gap:15px}.hero-bottom{gap:12px}.hero-bottom span+span{padding-left:12px}.hero-image{min-height:530px}.stage-strip{padding:24px 5%;gap:12px}.strip-label{display:none}.section{padding:58px 30px}.blue-banner,.wechat-band{margin-left:30px;margin-right:30px}.footer-main>div{gap:15px;flex-wrap:wrap}.image-note{left:28px}.service-grid{gap:0 25px}}
@media(max-width:700px){.site-header{padding:18px 22px;position:relative}.site-header .brand-icon{width:36px;height:36px;border-radius:9px}.site-header .brand{font-size:20px;gap:9px}.brand small{font-size:12px;letter-spacing:.02em}.menu-toggle{display:block;font-size:13px}.site-header nav{display:none;position:absolute;top:100%;left:0;right:0;background:white;padding:19px 24px;z-index:9;border-bottom:1px solid var(--line);box-shadow:0 10px 14px #111b3808}.site-header nav.is-open{display:grid;grid-template-columns:1fr 1fr;gap:16px}.hero{display:block;min-height:auto}.hero-copy{padding:37px 26px 32px}.hero h1{font-size:34px;letter-spacing:-.06em}.hero-eyebrow{font-size:12px;margin-bottom:22px;letter-spacing:.1em}.hero-description{font-size:15px;margin-top:21px}.hero-actions{margin-top:27px;gap:20px}.button{font-size:14px;padding:13px 18px}.hero-bottom{margin-top:28px;font-size:12px;gap:18px}.hero-bottom span+span{padding-left:18px}.hero-image{min-height:200px;height:220px}.hero-image img{object-position:50% 38%}.image-note{bottom:24px;left:26px}.image-note p{font-size:22px}.mini-brand{display:none}.image-note-small{font-size:12px;margin-top:12px}.stage-strip{padding:21px 22px;gap:13px;align-items:flex-start}.stage-strip a{font-size:14px}.stage-strip b{display:block;margin-bottom:4px;font-size:12px}.stage-strip small{padding:0;font-size:12px;max-width:90px}.section{padding:44px 23px}.section-heading{margin-bottom:25px;gap:12px}.section-heading h2{font-size:26px}.underlined{font-size:12px}.eyebrow{font-size:12px}.service-grid{display:block}.service-item{padding:23px 0;gap:16px}.service-item p{font-size:14px}.service-number{font-size:13px}.blue-banner{padding:29px 25px;margin:0 22px;display:block}.blue-banner h2{font-size:25px}.blue-banner .button{margin-top:23px}.editorial-grid{display:block}.featured-guide{padding:27px;margin-bottom:26px}.featured-guide h3{font-size:27px}.guide-list h3{font-size:19px}.wechat-band{margin:0 22px 44px;padding:27px 24px;display:block}.wechat-symbol{width:48px;height:48px;font-size:24px;margin-bottom:20px;border-radius:12px}.wechat-band h2{font-size:24px}.wechat-band .button{margin-top:23px}.footer-main{display:block}.footer-main>div{margin-top:27px;gap:15px 20px}.site-footer{padding:32px 23px 20px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:10px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}.page-intro{max-width:1400px;margin:auto;padding:24px max(6%,calc((100% - 1164px)/2)) 46px;background:var(--paper);border-top:1px solid var(--line)}.breadcrumbs{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:12px;color:var(--muted);line-height:1.8;margin-bottom:39px}.breadcrumbs a:hover{color:var(--blue)}.page-intro h1{font-size:clamp(31px,3.1vw,45px);letter-spacing:-.04em;max-width:880px;margin:15px 0 21px;line-height:1.45}.page-lead{font-size:17px;line-height:1.95;color:var(--muted);max-width:820px}.catalog{padding-top:45px}.bottom-banner{margin-bottom:65px}.reading-layout{max-width:1164px;margin:0 auto;display:grid;grid-template-columns:minmax(0,780px) 260px;gap:65px;padding:50px 0 70px;align-items:start}.prose>section{margin-bottom:36px;scroll-margin-top:24px}.prose 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a:hover{color:var(--blue)}.aside-cta{margin-top:24px;border-radius:8px;background:var(--navy);padding:28px 25px;color:white}.aside-cta>span{font-size:12px;letter-spacing:.1em;color:#9cacca}.aside-cta h3{margin:17px 0;font-size:23px;line-height:1.6}.aside-cta p{font-size:14px;color:#abb8d1;line-height:1.85;margin-bottom:23px}.aside-cta .button{width:100%;font-size:14px}.source-box{background:var(--paper);border-left:3px solid var(--blue);padding:26px 28px;border-radius:0 6px 6px 0;margin-top:38px}.source-box h2{font-size:18px!important;margin-bottom:12px}.source-box p{font-size:13px!important;line-height:1.9}.source-box ul{font-size:14px;padding-left:18px;margin:14px 0}.source-box a{overflow-wrap:anywhere}.faq details{border-top:1px solid var(--line);padding:18px 0}.faq details:last-child{border-bottom:1px solid var(--line)}.faq summary{font-size:16px;cursor:pointer;font-weight:600;line-height:1.8;list-style:revert}.faq p{margin-top:17px!important;font-size:15px}.related{margin-top:45px}.related h2{font-size:22px}.related-links a{display:block;border-top:1px solid var(--line);padding:13px 0;font-size:15px}.related-links a:last-child{border-bottom:1px solid var(--line)}.filter-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:21px}.filter-buttons{display:flex;gap:6px;flex-wrap:wrap}.filter-button{font-size:14px;background:transparent;border:0;border-radius:5px;color:var(--muted);padding:9px 13px;line-height:1.6}.filter-button.active{background:var(--navy);color:white}.search-box input{font-size:14px;width:255px;border:1px solid var(--line);padding:11px 15px;border-radius:5px;background:#fff}.result-count{font-size:13px;color:var(--muted);margin-bottom:25px}.knowledge-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:25px}.knowledge-card{border:1px solid var(--line);border-radius:8px;padding:26px 25px;display:flex;align-items:flex-start;flex-direction:column;transition:border .2s,box-shadow .2s}.knowledge-card:hover{border-color:#9cafff;box-shadow:0 10px 24px #18285808}.knowledge-card h2{font-size:21px;line-height:1.6;letter-spacing:-.02em;margin:21px 0 14px}.knowledge-card p{font-size:14px;color:var(--muted);line-height:1.9;margin-bottom:25px}.knowledge-card small{font-size:12px;color:#8c96aa;margin-top:auto}.no-results{text-align:center;border:1px dashed var(--line);border-radius:8px;padding:55px 25px}.no-results h2{font-size:25px}.no-results p{color:var(--muted);margin:15px 0 23px}.article-meta{display:flex;flex-wrap:wrap;gap:9px 20px;color:#7a8498;font-size:13px;margin-bottom:30px;padding-bottom:23px;border-bottom:1px solid var(--line)}.article-prose>section>p{line-height:2.1}.takeaways{background:#eef3ff;padding:25px 29px;border-radius:6px}.takeaways h2{font-size:20px}.takeaways ul{margin-bottom:0}.article-actions{display:flex;gap:15px;flex-wrap:wrap;margin:32px 0}.checklist-layout{max-width:1080px}.checklist{border:1px solid var(--line);border-radius:8px;padding:31px 35px;margin-bottom:30px;scroll-margin-top:20px}.checklist-top{display:flex;align-items:start;justify-content:space-between;gap:20px;margin-bottom:25px}.checklist h2{font-size:25px}.checklist-top p:last-child{font-size:14px;color:var(--muted);margin-top:10px}.check-progress{font-size:13px;background:var(--paper);padding:7px 11px;border-radius:5px;white-space:nowrap;margin-top:7px;color:var(--blue)}.check-items{display:grid;grid-template-columns:1fr 1fr;gap:0 28px}.check-items label{display:flex;gap:12px;align-items:flex-start;padding:13px 0;border-top:1px solid #e8ecf3;cursor:pointer;font-size:15px;line-height:1.85}.check-items input{width:18px;height:18px;accent-color:var(--blue);flex-shrink:0;margin:5px 0 0}.check-items input:checked+span{color:#718093;text-decoration:line-through}.checklist-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:25px}.reset-checks{border:none;background:none;font-size:14px;color:var(--muted);text-decoration:underline;padding:6px}.tool-note{color:var(--muted);font-size:14px;line-height:1.9}.consult-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:45px}.field{margin-bottom:22px}.field label{display:block;font-size:15px;font-weight:600;margin-bottom:9px}.field label span{font-size:12px;color:var(--muted);font-weight:400;margin-left:8px}.field input,.field select,.field textarea{display:block;width:100%;border:1px solid #cdd5e3;border-radius:5px;padding:12px 14px;font-size:15px;background:white;color:var(--navy)}.field textarea{resize:vertical;min-height:135px;line-height:1.85}.field input::placeholder,.field textarea::placeholder{color:#8d97a8}.form-note{font-size:13px;color:var(--muted);line-height:1.9;margin:0 0 20px}.consult-result{background:var(--paper);border-radius:8px;padding:31px 33px;align-self:start}.consult-result h2{font-size:25px}.consult-result>p:not(.eyebrow){font-size:14px;color:var(--muted);margin-top:15px}.consult-result pre{white-space:pre-wrap;overflow-wrap:anywhere;font:14px/1.95 "Microsoft YaHei",system-ui,sans-serif;background:white;padding:22px;border:1px solid var(--line);border-radius:5px;margin:22px 0}.consult-result #brief-actions{display:flex;flex-wrap:wrap;gap:12px}.consult-tips{margin-top:25px;border-top:1px solid var(--line);padding-top:24px}.consult-tips h3{font-size:17px}.consult-tips ul{color:var(--muted);font-size:14px;padding-left:20px;line-height:2}.wechat-feature{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:center}.wechat-brand-card{background:var(--navy);color:white;padding:50px 45px;border-radius:8px}.wechat-brand-card .wechat-symbol{background:var(--lime);color:var(--navy);margin-bottom:25px}.wechat-brand-card h2{font-size:34px}.wechat-brand-card>p{color:#b6c1d7;font-size:16px;margin:17px 0 25px}.wechat-brand-card .pill{background:#26324d;color:#c7d4e9}.wechat-brand-card .wechat-status{font-size:13px;line-height:1.85;max-width:280px;margin-top:20px;margin-bottom:0}.wechat-reading>h2{font-size:31px;margin:14px 0 30px}.column-item{display:flex;gap:20px;padding:18px 0;border-top:1px solid var(--line)}.column-item>span{font-size:13px;color:var(--blue);margin-top:4px}.column-item h3{font-size:19px}.column-item p{font-size:14px;color:var(--muted);margin-top:9px}.wechat-articles{margin-top:55px}.notice-box{margin-top:35px;padding:26px 30px;background:var(--paper);border-radius:6px}.notice-box h3{font-size:21px}.notice-box p{font-size:15px;color:var(--muted);margin:13px 0}.inline-action{color:var(--blue);font-size:14px;border-bottom:1px solid #b9c8ff}.reading-layout.single{display:block;max-width:840px}.error-page{min-height:480px;display:flex;flex-direction:column;justify-content:center}.error-page h1{font-size:35px}.error-page p:not(.eyebrow){color:var(--muted);margin-top:18px}.error-page>div{display:flex;gap:16px;margin-top:28px}
@media(max-width:1250px){.reading-layout{margin:0 38px;gap:40px;grid-template-columns:minmax(0,1fr) 240px}.reading-layout.single{margin:0 auto;padding-left:38px;padding-right:38px}.page-intro{padding-left:6%;padding-right:6%}}
@media(max-width:1000px){.knowledge-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.reading-layout{margin:0 30px;gap:30px;grid-template-columns:minmax(0,1fr) 210px}.aside-card{padding:20px}.aside-cta{padding:23px 20px}.consult-layout{gap:30px}.consult-result{padding:25px}.checklist{padding:28px}.wechat-feature{gap:35px}.wechat-brand-card{padding:37px 30px}.wechat-reading>h2{font-size:27px}}
@media(max-width:700px){.page-intro{padding:16px 23px 31px}.breadcrumbs{font-size:12px;margin-bottom:26px;gap:7px}.page-intro h1{font-size:30px;margin-top:12px;margin-bottom:16px;line-height:1.5}.page-lead{font-size:15px;line-height:1.9}.reading-layout{display:block;margin:0;padding:32px 23px 42px}.reading-aside{display:none}.prose h2{font-size:22px;margin-bottom:16px}.prose p,.prose ul{font-size:16px;line-height:1.95}.prose>section{margin-bottom:30px}.steps li{gap:14px;padding:15px 0}.steps li>span{font-size:14px}.source-box{padding:22px}.source-box p{font-size:13px!important}.related-links a{font-size:14px}.catalog{padding-top:29px}.knowledge-grid{grid-template-columns:1fr;gap:18px}.knowledge-card{padding:23px}.knowledge-card h2{margin-top:18px;font-size:21px}.knowledge-card p{font-size:15px;margin-bottom:23px}.filter-bar{gap:20px}.filter-buttons{gap:6px}.filter-button{font-size:13px;padding:8px 10px}.search-box,.search-box input{width:100%}.search-box input{font-size:16px}.filter-bar .search-box{order:2}.article-meta{font-size:12px;gap:7px 15px}.takeaways{padding:22px}.article-actions .button{font-size:13px;padding:12px 14px}.checklist{padding:22px 20px;margin-bottom:22px}.checklist-top{display:block;margin-bottom:22px}.checklist h2{font-size:22px}.check-progress{display:inline-block;margin-top:15px;font-size:12px}.check-items{grid-template-columns:1fr}.check-items label{font-size:15px}.checklist-actions{gap:10px}.checklist-actions .button{font-size:13px;padding:11px 13px}.consult-layout{display:block}.consult-result{margin-top:33px;padding:24px 21px}.consult-result h2{font-size:23px}.field input,.field select,.field textarea{font-size:16px}.wechat-feature{display:block}.wechat-brand-card{padding:33px 28px}.wechat-brand-card h2{font-size:30px}.wechat-reading{margin-top:33px}.wechat-reading>h2{font-size:27px}.wechat-articles{margin-top:32px}.notice-box{padding:24px}.reading-layout.single{padding:31px 23px 40px}.bottom-banner{margin-bottom:43px}.tool-note{font-size:14px}}
.brand-icon{background:white;border-radius:0;width:44px;height:44px}.brand-mark{width:100%;height:100%;object-fit:contain}.mini-brand{display:block;width:44px;height:44px;background:white;border-radius:9px;padding:5px;margin-bottom:20px}.hero-copy{padding-top:48px}.hero-description{margin-top:19px}.hero-actions{margin-top:25px}.hero-search{display:flex;background:white;border-radius:6px;overflow:hidden;margin-top:28px;max-width:480px;border:1px solid #c1cef6}.hero-search input{flex:1;min-width:0;background:white;border:none;padding:14px 16px;color:var(--navy);font-size:15px;outline-offset:-4px}.hero-search button{border:0;background:#edf1ff;color:var(--blue);padding:12px 15px;font-size:14px;font-weight:600}.hero-keywords{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:11px;color:#b6c4e5;font-size:12px}.hero-keywords a:hover{color:var(--lime)}.hero-bottom{margin-top:24px}.hero-image img{animation:hero-arrive 1.7s cubic-bezier(.2,.65,.35,1) both}.hero-copy>h1{animation:text-arrive .75s .1s both}.hero-description,.hero-actions{animation:text-arrive .75s .2s both}.hero-eyebrow{margin-bottom:23px}.question-highlights{padding-top:0}.question-highlight-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.question-highlight-grid>a{border:1px solid var(--line);border-radius:8px;padding:28px 31px;background:white}.question-highlight-grid>a:hover{border-color:#9cafff}.question-highlight-grid span{font-size:12px;color:var(--blue)}.question-highlight-grid h3{font-size:22px;line-height:1.6;margin:13px 0}.question-highlight-grid p{font-size:15px;color:var(--muted);line-height:1.95}.question-highlight-grid small{display:block;color:var(--blue);font-size:13px;margin-top:22px}.question-categories{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}.question-categories a{background:var(--paper);padding:9px 17px;font-size:14px;border-radius:5px}.question-categories a:hover{background:#edf1ff;color:var(--blue)}.question-group{margin-bottom:45px;scroll-margin-top:25px}.question-group>h2{font-size:29px;margin-bottom:23px}.question-group>div{display:grid;grid-template-columns:1fr 1fr;gap:0 36px}.question-answer{padding:24px 0;border-top:1px solid var(--line)}.question-answer h3{font-size:20px;line-height:1.6}.question-answer p{font-size:16px;line-height:1.95;color:var(--muted);margin:14px 0}.question-answer a{color:var(--blue);font-size:14px}.reading-progress{position:fixed;top:0;left:0;right:0;height:3px;background:var(--blue);transform:scaleX(0);transform-origin:left;z-index:60;pointer-events:none}.back-top{position:fixed;bottom:27px;right:25px;border:1px solid var(--line);background:white;color:var(--navy);border-radius:6px;font-size:13px;padding:11px 13px;box-shadow:0 4px 18px #111b3810;z-index:40}.mobile-dock{display:none}.reveal-ready{opacity:.25;transform:translateY(15px);transition:opacity .6s var(--reveal-delay,0ms),transform .6s var(--reveal-delay,0ms)}.is-revealed{opacity:1;transform:none}@keyframes hero-arrive{from{transform:scale(1.035);opacity:.45}to{transform:scale(1);opacity:1}}@keyframes text-arrive{from{transform:translateY(12px);opacity:0}to{transform:translateY(0);opacity:1}}
@media(max-width:1100px){.site-header nav{gap:18px;font-size:14px}.hero-copy{padding-top:37px}.hero h1{font-size:37px}.hero-actions{gap:14px}.hero-search input{font-size:14px;padding:12px}.hero-search button{font-size:13px;padding:10px 12px}}
@media(max-width:700px){body{padding-bottom:75px}.site-header .brand-icon{background:white;border-radius:0;width:39px;height:39px}.site-header nav.is-open{grid-template-columns:1fr 1fr}.hero-copy{padding-top:35px}.hero h1{font-size:34px}.hero-actions{gap:21px}.hero-search{margin-top:25px}.hero-search input{font-size:16px;padding:13px 12px}.hero-search button{padding:12px;font-size:13px;white-space:nowrap}.hero-bottom{display:none}.hero-keywords{font-size:12px;margin-top:11px}.hero-image{height:180px;min-height:180px}.image-note{bottom:23px}.image-note p{font-size:22px}.mini-brand{display:none}.question-highlights{padding-top:0}.question-highlight-grid{grid-template-columns:1fr;gap:17px}.question-highlight-grid>a{padding:24px}.question-highlight-grid h3{font-size:21px}.question-highlight-grid p{font-size:15px}.question-categories{gap:8px;margin-bottom:27px}.question-categories a{font-size:13px;padding:8px 12px}.question-group>h2{font-size:25px}.question-group>div{grid-template-columns:1fr}.question-answer h3{font-size:20px}.question-answer p{font-size:16px}.mobile-dock{position:fixed;bottom:0;left:0;right:0;display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;padding:10px 15px calc(10px + env(safe-area-inset-bottom));background:#fffffff5;backdrop-filter:blur(14px);border-top:1px solid var(--line);z-index:45}.mobile-dock a{font-size:14px;text-align:center;padding:10px 7px;border-radius:5px;line-height:1.4}.mobile-dock a:last-child{background:var(--blue);color:white}.back-top{bottom:88px;right:15px;padding:9px 11px;font-size:12px}.toast{bottom:89px}.hero-copy>h1{animation-duration:.55s}.reveal-ready{transform:translateY(8px)}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}.reveal-ready{opacity:1;transform:none}}