
:root{--cream:#FAF6E9;--yellow:#F2CB57;--teal:#197E8A;--purple:#343347;--mist:#DCECEE;--pink:#E6A38A;--ink:#2D333A;--muted:#687071;--line:#deded4;--white:#fffefa;--max:1200px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--cream);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",sans-serif;line-height:1.85;font-size:16px}a{color:inherit;text-decoration:none}a:hover{color:var(--teal)}button{font:inherit}img{display:block;max-width:100%;height:auto}svg{flex-shrink:0}p{margin:0 0 1.1em}h1,h2,h3{color:var(--purple);line-height:1.4;margin:0 0 .75em;font-weight:700}h1{font-size:clamp(30px,4vw,54px);letter-spacing:-1.5px}h2{font-size:clamp(24px,2.6vw,34px);letter-spacing:-.6px}h3{font-size:20px}ul,ol{padding-left:1.5em}li{margin-bottom:.6em}.wrap{width:min(var(--max),calc(100% - 64px));margin-inline:auto}.eyebrow{display:block;font:600 11px/1.5 Arial,sans-serif;letter-spacing:2px;color:var(--teal);margin-bottom:18px}.icon{width:26px;height:26px;vertical-align:middle;color:var(--teal)}.text-link{display:inline-flex;align-items:center;gap:20px;font-weight:700;color:var(--teal);border-bottom:1px solid #9cbdba;padding:5px 0}.text-link:hover{border-color:var(--purple);color:var(--purple)}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:5px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link{position:fixed;top:-100px;left:20px;padding:12px;background:white;z-index:100}.skip-link:focus{top:10px}
.site-header{border-top:5px solid var(--purple);border-bottom:1px solid var(--line);background:var(--cream);position:relative;z-index:20}.header-row{height:96px;display:flex;align-items:center;justify-content:space-between;gap:25px}.brand{flex:0 0 260px}.brand img{width:260px;height:58px}#main-nav{display:flex;align-items:center;gap:30px;font-size:14px;font-weight:600}#main-nav a{padding:12px 0;position:relative;white-space:nowrap}#main-nav a[aria-current=page]:after{content:"";position:absolute;height:3px;background:var(--yellow);bottom:3px;left:0;right:0}.menu-toggle{display:none}
.hero{padding:64px 0 0}.hero-heading{display:grid;grid-template-columns:1.65fr 1fr;gap:60px;align-items:end;margin-bottom:45px}.hero h1{max-width:800px;font-size:clamp(34px,4.35vw,59px);line-height:1.35}.hero h1 .accent{color:var(--teal)}.hero-intro{font-size:15px;color:#5d6565}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.button{display:inline-flex;align-items:center;justify-content:center;gap:14px;min-height:48px;padding:11px 20px;font-size:14px;font-weight:700;background:var(--purple);color:#fff;border:1px solid var(--purple);border-radius:5px}.button:hover{background:var(--teal);color:#fff}.button.secondary{background:transparent;color:var(--purple);border-color:#aaa99f}.hero-lower{display:grid;grid-template-columns:minmax(0,1.38fr) minmax(0,1fr);gap:56px;align-items:center}.hero-figure{margin:0;position:relative;padding-bottom:26px}.hero-figure img{width:100%;border-radius:10px}.hero-figure figcaption{position:absolute;bottom:4px;left:20px;padding:8px 18px;background:var(--yellow);font-size:11px;letter-spacing:1px;color:var(--purple);box-shadow:4px 4px 0 var(--purple)}.process-note{padding:20px 0 0}.process-note h2{font-size:27px}.process-note>p{font-size:14px;color:var(--muted)}.quick-checks{list-style:none;margin:24px 0 0;padding:0;border-top:1px solid var(--line)}.quick-checks li{margin:0;border-bottom:1px solid var(--line)}.quick-checks a{display:flex;align-items:center;gap:16px;padding:16px 0;font-size:14px}.quick-checks b{font:12px Arial;color:var(--teal)}.quick-checks span{margin-left:auto}.load-index{border-block:1px solid var(--line);margin-top:36px;padding:25px 0}.load-index ol{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));list-style:none;padding:0;margin:0;gap:18px}.load-index li{margin:0;padding-left:15px;border-left:2px solid #c6cfca}.load-index b{font:11px Arial;color:var(--teal);display:block}.load-index strong{display:block;font-size:14px;margin:5px 0}.load-index small{display:block;color:var(--muted);font-size:11px}
.home-section{padding:82px 0;border-bottom:1px solid var(--line)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:32px}.section-head h2{max-width:780px;margin:0}.section-number{font:12px Arial;color:var(--teal);letter-spacing:1px}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.08fr);gap:58px;align-items:center}.split.reverse{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr)}.split img{border-radius:10px;width:100%}.split .body-copy{font-size:15px}.split h2{font-size:30px}.platforms{display:flex;flex-wrap:wrap;gap:9px;margin:20px 0}.platforms span{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:4px;padding:5px 9px;font-size:12px;background:var(--white)}.platforms .icon{width:18px;height:18px}.note{background:var(--mist);padding:20px 24px;border-left:3px solid var(--teal);font-size:14px;margin:24px 0}.metrics-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:22px 0}.metrics-strip>div{border-top:2px solid var(--teal);padding:12px 0}.metrics-strip strong{display:block;font:700 24px Arial;color:var(--teal)}.metrics-strip span{font-size:12px}.table-wrap{overflow-x:auto;max-width:100%;margin:25px 0;border:1px solid var(--line);border-radius:6px}table{width:100%;border-collapse:collapse;background:var(--white);font-size:14px;text-align:left;min-width:540px}th,td{padding:15px 20px;vertical-align:top;border-bottom:1px solid var(--line)}thead{background:var(--mist);color:var(--purple)}tbody tr:last-child>*{border-bottom:0}tbody th{font-weight:600;width:22%}.fault-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 30px}.fault-list a{padding:20px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:30px 1fr;gap:14px;font-size:14px}.fault-list small{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:5px}.home-news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.news-card{background:var(--white);border:1px solid var(--line);border-radius:8px;overflow:hidden;display:flex;flex-direction:column}.news-card>a{display:block;overflow:hidden}.news-card img{aspect-ratio:3/2;width:100%;object-fit:cover;transition:transform .35s}.news-card:hover img{transform:scale(1.025)}.news-card-body{padding:24px;display:flex;flex-direction:column;flex:1}.card-label{font-size:11px;letter-spacing:1px;color:var(--teal);border-left:4px solid var(--yellow);padding-left:8px;margin-bottom:12px}.news-card h3{font-size:19px;line-height:1.6}.news-card p{font-size:13px;color:var(--muted)}.news-card .text-link{align-self:start;margin-top:auto;font-size:13px}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:21px 0}summary{cursor:pointer;color:var(--purple);font-weight:600;list-style:none;padding-right:40px;position:relative}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:6px;font:24px Arial;color:var(--teal)}details[open] summary:after{content:"−"}details p{max-width:930px;margin:18px 0 0;font-size:14px;color:#586363}.topic-directory{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}.topic-directory a{display:grid;grid-template-columns:44px 1fr;gap:15px;align-items:start;padding:24px 0;border-bottom:1px solid var(--line)}.topic-directory b{font:26px Arial;color:var(--teal)}.topic-directory strong{display:block;font-size:18px}.topic-directory small{font-size:13px;color:var(--muted);display:block;margin-top:7px}.reading-band{padding:42px;background:var(--purple);color:var(--cream);border-radius:8px;margin-block:60px}.reading-band h2{color:var(--cream);font-size:27px}.reading-band p{font-size:14px;color:#d0d3d1}.reading-links{display:flex;gap:20px;flex-wrap:wrap}.reading-links a{font-size:13px;border-bottom:1px solid #838b87;color:var(--yellow)}
.site-footer{border-top:1px solid var(--line)}.footer-top{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:45px;padding-block:50px}.footer-brand p{font-size:24px;line-height:1.5;color:var(--purple);font-weight:700}.footer-brand small{font-size:12px;color:var(--muted)}.footer-group h2{font-size:14px;display:flex;align-items:center;gap:9px;margin-bottom:17px}.footer-group h2 span{font:10px Arial;background:var(--yellow);padding:5px;color:var(--purple)}.footer-group a{display:block;font-size:13px;margin:9px 0;color:#616b69}.copyright{background:var(--purple);color:#e1e1da;padding:23px 0}.copyright-row{display:flex;justify-content:space-between;align-items:center;gap:15px;font-size:10px}.registrations{display:flex;gap:18px}.registrations span{cursor:default;white-space:nowrap}
.breadcrumbs{padding-block:23px;font-size:11px;color:var(--muted)}.breadcrumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:10px}.breadcrumbs li{margin:0}.breadcrumbs li+li:before{content:"/";margin-right:10px;color:#b4b8af}.page-title{padding:32px 0 40px;border-bottom:1px solid var(--line)}.page-title h1{max-width:1000px;font-size:clamp(30px,3.8vw,48px)}.page-title .lead{max-width:850px;color:#65716d;font-size:17px}.page-cover{display:grid;grid-template-columns:1.06fr 1fr;gap:50px;align-items:center;margin:40px 0}.page-cover figure{margin:0}.page-cover img{border-radius:10px;width:100%}.page-cover figcaption{font-size:11px;color:var(--muted);margin-top:10px}.page-cover h2{font-size:27px}.page-cover p{font-size:15px}.article-layout{display:grid;grid-template-columns:minmax(0,800px) minmax(190px,1fr);gap:65px;align-items:start;padding-block:30px 65px}.article-content{min-width:0}.article-content>section{margin:0 0 43px}.article-content h2{font-size:26px}.article-content h3{font-size:19px;margin-top:25px}.article-content p,.article-content li{font-size:15px}.article-content .table-wrap table{font-size:13px}.side-note{border-top:3px solid var(--teal);padding-top:20px;font-size:13px;position:sticky;top:35px}.side-note h2{font-size:16px}.side-note a{display:block;border-bottom:1px solid var(--line);padding:12px 0;color:var(--teal)}.side-note small{display:block;margin-top:25px;color:var(--muted)}.stage-list{list-style:none;padding:0;counter-reset:stage}.stage-list li{padding:0 0 20px 44px;border-left:1px solid #b9cecb;margin-left:14px;position:relative}.stage-list li:before{counter-increment:stage;content:counter(stage,decimal-leading-zero);position:absolute;left:-15px;top:0;background:var(--yellow);width:30px;height:30px;text-align:center;font:12px/30px Arial;color:var(--purple);border-radius:3px}.stage-list strong{display:block;margin-bottom:6px}.chapter-tags{display:flex;gap:12px;flex-wrap:wrap;padding:22px 0;border-bottom:1px solid var(--line)}.chapter-tags a{font-size:12px;background:var(--mist);padding:5px 12px;border-radius:4px}.journal-list{padding:20px 0 60px}.journal-row{display:grid;grid-template-columns:50px 290px 1fr;gap:28px;padding:35px 0;border-bottom:1px solid var(--line);align-items:center}.journal-row>span{font:28px Arial;color:var(--teal);align-self:start}.journal-row img{border-radius:8px;aspect-ratio:3/2;object-fit:cover}.journal-row h2{font-size:24px}.journal-row p{font-size:14px;color:var(--muted)}.external-tools{border-top:1px solid var(--line);padding-top:28px}.external-tools h2{font-size:23px}.external-links{display:flex;flex-wrap:wrap;gap:10px 20px}.external-links a{font-size:13px;color:var(--teal);border-bottom:1px solid #aecbc7}.article-nav{display:flex;justify-content:space-between;gap:35px;border-top:1px solid var(--line);padding-top:25px;margin-top:35px}.article-nav a{flex:1;font-size:14px}.article-nav small{display:block;color:var(--teal);margin-bottom:7px}.sources{padding:20px 24px;background:#ecece1;font-size:12px;color:#63716b;margin-top:35px;overflow-wrap:anywhere}.sources p{font-size:12px;margin-bottom:6px}.related{padding:24px;background:var(--mist);border-radius:6px;margin-top:30px}.related h2{font-size:19px}.related a{font-size:14px;display:block;margin:10px 0}.legal{max-width:860px;margin-inline:auto;padding:40px 0 70px}.legal section{margin-bottom:35px}.legal h2{font-size:24px}
@media(min-width:1450px){:root{--max:1260px}.copyright-row{font-size:11px}}
@media(max-width:1050px){#main-nav{gap:20px}.brand,.brand img{width:230px;flex-basis:230px}.hero-heading{gap:30px;grid-template-columns:1.4fr 1fr}.hero-lower,.split,.split.reverse{gap:30px}.footer-top{gap:25px}.article-layout{gap:35px;grid-template-columns:minmax(0,1fr) 200px}.copyright-row{flex-wrap:wrap}.journal-row{grid-template-columns:35px 240px 1fr;gap:20px}}
@media(max-width:920px){.home-news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-heading{display:block}.hero-intro{max-width:780px}.hero-lower{grid-template-columns:1.2fr 1fr;gap:25px}.process-note h2{font-size:23px}.load-index small{font-size:10px}.fault-list{grid-template-columns:repeat(2,minmax(0,1fr))}.home-section{padding:60px 0}.split h2{font-size:25px}.article-layout{display:block}.side-note{position:static;margin-top:40px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 25px}.side-note h2,.side-note small{grid-column:1/-1}.page-cover{gap:30px}.journal-row{grid-template-columns:30px 210px 1fr}.journal-row h2{font-size:20px}}
@media(max-width:760px){.wrap{width:calc(100% - 40px)}.header-row{height:80px}.brand,.brand img{width:225px;flex-basis:225px}.menu-toggle{display:block;border:1px solid #b4bcb4;background:transparent;width:42px;height:40px;padding:10px}.menu-toggle>span:not(.sr-only){display:block;height:2px;background:var(--purple);margin:5px 0}#main-nav{display:none;position:absolute;left:0;right:0;top:80px;padding:14px 25px 22px;background:var(--cream);border-bottom:1px solid var(--line);box-shadow:0 15px 20px #34334712}#main-nav.is-open{display:flex;flex-direction:column;align-items:stretch;gap:0}#main-nav a{padding:10px 8px}.hero{padding-top:36px}.hero-heading{margin-bottom:30px}.hero h1{letter-spacing:-1px}.hero-lower{grid-template-columns:1fr}.hero-figure{max-width:560px}.process-note{padding-top:5px}.process-note>p{max-width:600px}.quick-checks{margin-top:15px}.quick-checks a{padding:12px 0}.load-index ol{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px 10px}.load-index small{font-size:11px}.split,.split.reverse{display:flex;flex-direction:column;gap:30px;align-items:stretch}.split .body-copy{order:0}.split img{order:1;max-width:600px}.section-head{display:block}.section-head .text-link{margin-top:15px}.topic-directory{gap:0 25px}.footer-top{grid-template-columns:repeat(3,minmax(0,1fr));gap:30px 20px}.footer-brand{grid-column:1/-1}.footer-brand p br{display:none}.footer-brand p{font-size:24px;margin-bottom:10px}.copyright-row{align-items:start}.registrations{flex-wrap:wrap;gap:5px 15px}.page-title{padding-top:10px}.page-cover{grid-template-columns:1fr;gap:25px}.page-cover figure{max-width:570px}.page-cover>div{order:-1}.page-title .lead{font-size:15px}.journal-row{grid-template-columns:30px 180px 1fr;gap:15px}.journal-row h2{font-size:18px}.journal-row p{font-size:12px}.reading-band{padding:30px;margin-block:40px}.reading-band h2{font-size:23px}.article-content>section{margin-bottom:35px}}
@media(max-width:620px){.home-news-grid{grid-template-columns:minmax(0,1fr)}.home-section{padding:45px 0}.home-section h2{font-size:25px}.news-card-body{padding:22px}.news-card h3{font-size:20px}.news-card p{font-size:14px}.load-index ol{grid-template-columns:repeat(2,minmax(0,1fr))}.fault-list{grid-template-columns:1fr}.topic-directory{grid-template-columns:1fr}.topic-directory a{padding:20px 0}.footer-top{grid-template-columns:1fr 1fr;gap:30px}.footer-brand{grid-column:1/-1}.footer-group:last-child{grid-column:1/-1}.footer-group:last-child a{display:inline-block;margin-right:20px}.copyright-row{font-size:10px;line-height:1.9}.registrations{display:flex;flex-direction:column}.hero h1{font-size:34px}.hero-heading .button-row{display:grid;grid-template-columns:1fr}.hero-intro{font-size:14px}.hero-figure figcaption{left:12px;padding:7px 12px;font-size:10px}.metrics-strip strong{font-size:21px}.metrics-strip span{font-size:11px}.journal-row{grid-template-columns:30px 1fr}.journal-row>a{grid-column:2}.journal-row>div{grid-column:2}.journal-row h2{font-size:22px}.journal-row p{font-size:14px}.journal-row>span{grid-column:1;grid-row:1/3}.side-note{display:block}.article-nav{flex-direction:column;gap:25px}.page-title h1{font-size:30px;letter-spacing:-.7px}.article-content h2{font-size:24px}.reading-band{padding:25px}.reading-links{gap:12px 20px}.eyebrow{letter-spacing:1.5px;font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

@media(max-width:760px){.no-js #main-nav{display:flex;position:static;box-shadow:none;flex-wrap:wrap;flex-direction:row;gap:5px 20px;padding:0 0 15px}.no-js .header-row{height:auto;min-height:80px;flex-wrap:wrap}.no-js .menu-toggle{display:none}}
