:root{--ink:#202522;--muted:#606a64;--line:#dce1dd;--link:#185b44;--paper:#fff;--subtle:#f5f7f5}
*{box-sizing:border-box}
html{scroll-padding-top:20px}
body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.8 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--link);text-decoration:none;overflow-wrap:anywhere}
a:hover{text-decoration:underline;text-underline-offset:3px}
button,input,select{font:inherit;color:inherit}
button,a{touch-action:manipulation}
button{cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--link);outline-offset:4px}
svg{width:16px;height:16px;flex-shrink:0;vertical-align:middle}
h1,h2,h3,p{margin:0}
[hidden]{display:none!important}
.sr-only{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:15px;background:#fff;padding:8px 14px;border:1px solid var(--link);z-index:10}
.skip-link:focus{top:10px}
.page-width,.header-inner,.category-nav,.site-footer{width:calc(100% - 64px);max-width:1200px;margin-inline:auto}
.site-header{border-bottom:1px solid var(--line)}
.header-inner{min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{font-size:19px;font-weight:650;color:var(--ink);white-space:nowrap}
.utility-nav{display:flex;flex-wrap:wrap;gap:23px;font-size:13px}
.utility-nav a{color:var(--muted)}
.utility-nav a[aria-current]{color:var(--ink);font-weight:600}
.category-nav{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:5px;padding-block:10px 13px;border-top:1px solid #edf0ed}
.category-nav a{display:flex;align-items:center;justify-content:center;gap:5px;padding:7px 3px;font-size:13px;white-space:nowrap;color:#414c44}
.category-nav a span{font-size:11px;color:#657168}
.category-nav a[aria-current]{font-weight:650;color:var(--link);background:#edf3ee}
.directory-intro{padding-block:27px 20px}
.directory-intro h1{font-size:27px;line-height:1.5;font-weight:650;margin-bottom:8px}
.directory-intro>p{color:#4d5951;line-height:1.9}
.directory-intro .directory-status{font-size:12px;color:var(--muted);margin-top:7px}
.search-form{display:flex;gap:12px;max-width:850px;margin-bottom:20px}
.search-box{display:flex;align-items:center;gap:10px;min-width:0;flex:1;border:1px solid #bfc9c1;padding-inline:12px;background:#fff}
.search-box>svg{color:#6e7b72;width:18px;height:18px}
.search-box input{height:42px;width:100%;min-width:0;border:0;outline:0;background:transparent;font-size:14px;padding:0}
.search-box input::placeholder{color:#68756c}
.search-box input::-webkit-search-cancel-button{display:none}
.search-box:focus-within{outline:2px solid #679b80;outline-offset:1px}
.search-box input:focus-visible{outline:none}
kbd{font:12px/1.5 ui-monospace,monospace;color:#869087;border:1px solid var(--line);padding:0 5px}
.search-clear{border:0;background:none;font-size:20px;padding:0 3px;line-height:1}
.method-filter{min-width:185px;display:flex}
.method-filter select{width:100%;border:1px solid #bfc9c1;background:#fff;padding:6px 10px;font-size:13px}
.directory-toolbar{display:flex;align-items:baseline;justify-content:space-between;border-bottom:2px solid #57685b;padding-bottom:9px;gap:15px}
.directory-toolbar h2{font-size:17px;font-weight:600}
#result-count{font-size:12px;color:var(--muted)}
.platform-entry{padding-block:23px 22px;border-bottom:1px solid var(--line)}
.entry-heading{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.entry-heading h3{font-size:21px;font-weight:600;line-height:1.5}
.entry-heading>span{font-size:12px;color:var(--muted)}
.entry-category{font-size:12px;margin-left:auto;white-space:nowrap}
.entry-description{color:#455248;line-height:1.9;margin-block:8px 12px;max-width:1100px}
.entry-facts{margin:0;font-size:13px;line-height:1.95}
.entry-facts>div{display:grid;grid-template-columns:70px minmax(0,1fr);gap:13px;padding-block:3px}
.entry-facts dt{color:#6c796f}
.entry-facts dd{margin:0;overflow-wrap:anywhere}
.entry-links{display:flex;align-items:center;flex-wrap:wrap;gap:7px 21px;margin-top:14px;font-size:13px}
.entry-links>a{display:inline-flex;align-items:center;gap:4px}
.entry-links svg{width:13px;height:13px}
.entry-links .detail-link{font-weight:550}
.entry-links>span{margin-left:auto;font-size:11px;color:#606d64}
.empty-state,.empty-category{padding-block:35px 50px;border-bottom:1px solid var(--line)}
.empty-state h3,.empty-category h2{font-size:18px;font-weight:600;margin-bottom:10px}
.empty-state p,.empty-category p{color:var(--muted);margin-bottom:15px}
.empty-category{min-height:240px;border-top:1px solid var(--line)}
.directory-page{padding-bottom:35px;min-height:65vh}
.directory-page>.breadcrumb{padding-bottom:0}
.site-footer{border-top:1px solid var(--line);display:flex;align-items:baseline;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-block:21px 25px;font-size:11px;color:var(--muted)}
.site-footer nav{display:flex;flex-wrap:wrap;gap:20px;font-size:12px}
.breadcrumb{display:flex;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--muted);padding-block:20px}
.breadcrumb>span:not(:last-child){color:#a7afa9}
.platform-hero{border-bottom:1px solid var(--line);padding-block:10px 23px}
.platform-heading{display:flex;align-items:center;gap:15px}
.platform-icon{display:inline-flex;align-items:center;justify-content:center;width:33px;height:33px;border:1px solid var(--line);font-size:17px;color:#52645a;flex-shrink:0}
.platform-icon.large{width:48px;height:48px;font-size:24px}
.platform-icon.theme-okx{font-size:13px}
.platform-icon.large.theme-okx{font-size:18px}
.platform-heading h1{font-size:30px;line-height:1.5;font-weight:650}
.eyebrow,.detail-section-heading>span{display:none}
.platform-heading .eyebrow{display:block;color:var(--muted);font-size:11px}
.platform-heading .eyebrow>span{padding-inline:6px}
.platform-intro{font-size:14px;line-height:1.95;margin-top:17px;max-width:1000px;color:#4c5a50;overflow-wrap:anywhere}
.tags{display:flex;flex-wrap:wrap;gap:6px 17px;margin-top:12px;font-size:12px;color:#68776c}
.detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:42px;align-items:start}
.detail-main{min-width:0}
.section-nav{display:flex;gap:22px;flex-wrap:wrap;font-size:13px;border-bottom:1px solid var(--line);padding-block:15px}
.detail-section{padding-block:27px;border-bottom:1px solid var(--line)}
.detail-section h2{font-size:21px;font-weight:600;line-height:1.6;margin-bottom:17px}
.capability-grid{display:block}
.capability{border-bottom:1px solid #e8ece9;padding-block:17px}
.capability:first-child{padding-top:0}
.capability:last-child{border-bottom:0;padding-bottom:0}
.capability h3{font-size:16px;line-height:1.7;font-weight:600;margin-bottom:6px}
.capability>p{font-size:14px;line-height:1.95;color:#435047;overflow-wrap:anywhere}
.capability-condition{font-size:13px;line-height:1.95;color:#5c6b60;margin-top:8px;overflow-wrap:anywhere}
.capability-condition>span{font-weight:550;color:#455c4b;margin-right:9px}
.capability-sources{display:flex;flex-wrap:wrap;gap:4px 15px;margin-top:8px}
.source-inline{display:inline-flex;gap:4px;align-items:center;font-size:11px;color:#4d6c58}
.source-inline svg{width:12px;height:12px}
.fact-table{font-size:13px;border-top:1px solid var(--line);margin:0 0 19px}
.fact-table>div{display:grid;grid-template-columns:85px minmax(0,1fr);gap:12px;padding-block:11px;border-bottom:1px solid var(--line)}
.fact-table dt{color:var(--muted)}
.fact-table dd{margin:0;overflow-wrap:anywhere}
.content-list{margin:12px 0 0;padding-left:20px;font-size:14px;line-height:2;color:#49564d;overflow-wrap:anywhere}
.content-list li{padding-left:3px;margin-bottom:9px}
.content-list li:last-child{margin-bottom:0}
.steps{list-style:none;margin:0;padding:0}
.steps>li{display:flex;align-items:flex-start;gap:15px;margin-bottom:20px}
.steps>li:last-child{margin-bottom:0}
.step-number{font-size:12px;line-height:2.5;color:#6d8071;min-width:22px;font-variant-numeric:tabular-nums}
.steps h3{font-size:15px;font-weight:600;line-height:1.8;margin-bottom:5px}
.steps p{font-size:14px;line-height:1.95;color:#4c5950;overflow-wrap:anywhere}
.cost-note{padding-bottom:21px;border-bottom:1px solid var(--line)}
.cost-note .eyebrow{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.cost-note h3{font-size:15px;font-weight:550;line-height:1.9}
.subheading{font-size:16px;font-weight:600;margin-top:23px}
.review-note{border-left:2px solid #a1b4a3;padding-left:16px;margin-top:24px}
.review-note h3{font-size:14px;font-weight:600}
.review-note .content-list{font-size:13px}
.section-description{font-size:13px;color:var(--muted);margin-bottom:12px}
.source-list{list-style:none;margin:0;padding:0}
.source-list li{display:flex;gap:13px;padding-block:12px;border-bottom:1px solid var(--line)}
.source-number{font:11px/2 ui-monospace,monospace;color:#65756a;flex-shrink:0}
.source-list li>div{min-width:0}
.source-list a{font-size:13px;display:inline-flex;align-items:center;gap:5px}
.source-list svg{width:13px;height:13px}
.source-status{display:block;font-size:11px;color:#606d64;margin-top:3px}
.verification{font-size:12px;color:var(--muted);line-height:1.9;margin-top:20px}
.verification small{font-size:11px}
.detail-sidebar{position:sticky;top:20px;margin-top:26px}
.start-card{border:1px solid var(--line);padding:19px}
.start-card h2{font-size:18px;font-weight:600;margin-bottom:10px}
.start-card>p{font-size:13px;color:var(--muted);line-height:1.9;margin-bottom:15px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid #b9c8bc;background:#fff;color:var(--link);padding:8px 13px;font-size:13px;line-height:1.6}
.button.primary{background:#f2f6f2;border-color:#a9c2af;font-weight:550}
.button svg{width:14px;height:14px}
.start-card>.button{display:flex;justify-content:space-between;margin-top:9px;width:100%}
.extra-links-group{margin-top:13px}
.extra-links-group summary{font-size:12px;color:var(--link);cursor:pointer}
.extra-links-group summary span{font-size:11px;color:var(--muted);margin-left:4px}
.extra-links{display:grid;gap:10px;margin-top:14px}
.extra-links a{display:flex;justify-content:space-between;align-items:flex-start;gap:8px;font-size:12px}
.extra-links svg{width:13px;height:13px;margin-top:4px}
.sidebar-facts{border-top:1px solid var(--line);margin-top:17px;padding-top:14px;display:grid;gap:11px;font-size:11px}
.sidebar-facts>div{display:grid;grid-template-columns:56px minmax(0,1fr);gap:10px}
.sidebar-facts span{color:var(--muted)}
.sidebar-facts strong{font-weight:400;overflow-wrap:anywhere}
.sidebar-guide{display:block;border-top:1px solid var(--line);padding-top:13px;margin-top:14px;font-size:12px}
.sidebar-guide svg{margin-left:8px}
.sidebar-note{font-size:12px;padding:16px 3px;color:var(--muted)}
.sidebar-note>span{font-weight:550}
.sidebar-note p{margin-top:5px}
.related{padding-block:25px 35px}
.section-heading{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:17px}
.section-heading h2{font-size:19px;font-weight:600}
.text-link{display:inline-flex;align-items:center;gap:5px;font-size:13px}
.related-grid{display:flex;flex-wrap:wrap;gap:20px 35px}
.related-grid>a{display:flex;align-items:center;gap:10px}
.related-grid strong{font-size:14px;font-weight:550}
.related-grid small{display:block;font-size:11px;color:var(--muted)}
.related-grid>a>svg{display:none}
.reading-page{max-width:950px}
.reading-heading{border-bottom:1px solid var(--line);padding-block:10px 24px}
.reading-heading h1{font-size:29px;line-height:1.5;font-weight:650}
.reading-heading>p{font-size:14px;color:var(--muted);margin-top:12px}
.reading-content{max-width:780px;padding-block:0 35px}
.reading-content>section{margin-top:27px}
.reading-content h2{font-size:20px;line-height:1.7;font-weight:600;margin-bottom:12px}
.reading-content p{font-size:14px;color:#4d5951;line-height:2;margin-top:12px}
.reading-content p a{text-decoration:underline;text-underline-offset:3px}
.guide-definitions{margin:17px 0;border-top:1px solid var(--line)}
.guide-definitions>div{padding-block:13px;border-bottom:1px solid var(--line)}
.guide-definitions dt{font-size:14px;font-weight:600}
.guide-definitions dd{font-size:13px;line-height:1.95;color:var(--muted);margin:5px 0 0}
.reading-cta{margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}
.reading-cta h2{font-size:18px;margin-bottom:4px}
.reading-cta p{font-size:13px;margin-top:0;margin-bottom:13px}
.not-found{min-height:60vh;padding-block:60px}
.not-found h1{font-size:28px;font-weight:600;margin-bottom:15px}
.not-found p{color:var(--muted);margin-bottom:20px}
.notice{font-size:12px;color:var(--muted);margin-top:14px}
@media(max-width:1100px){.category-nav{grid-template-columns:repeat(4,minmax(0,1fr));gap:3px;padding-block:8px}.category-nav a{padding:6px 4px}.detail-layout{grid-template-columns:minmax(0,1fr) 230px;gap:28px}.entry-links>span{margin-left:0;flex-basis:100%}}
@media(max-width:760px){.page-width,.header-inner,.category-nav,.site-footer{width:calc(100% - 40px)}.header-inner{min-height:61px;gap:15px}.brand{font-size:17px}.utility-nav{font-size:12px;gap:15px}.category-nav a{font-size:12px;gap:4px}.category-nav a span{font-size:10px}.directory-intro h1{font-size:25px}.detail-layout{display:flex;flex-direction:column;gap:0}.detail-sidebar{position:static;order:-1;width:100%;margin-top:20px}.sidebar-facts,.sidebar-note{display:none}.start-card{padding:17px}.start-card>.button{width:auto;display:inline-flex;gap:15px;margin-right:10px}.extra-links{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 20px}.sidebar-guide{font-size:12px}.detail-main{width:100%;margin-top:7px}.section-nav{gap:18px;font-size:12px}.platform-heading h1{font-size:28px}.source-list a{font-size:12px}.entry-category{margin-left:0}.entry-facts>div{grid-template-columns:64px minmax(0,1fr);gap:10px}.entry-links{gap:7px 17px}}
@media(max-width:480px){.page-width,.header-inner,.category-nav,.site-footer{width:calc(100% - 32px)}.header-inner{min-height:58px;gap:10px}.brand{font-size:16px}.utility-nav{gap:12px;font-size:11px}.utility-nav a:first-child{display:none}.category-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 10px;padding-block:7px 10px}.category-nav a{justify-content:flex-start;padding:5px 8px;font-size:12px}.directory-intro{padding-block:22px 18px}.directory-intro h1{font-size:24px;margin-bottom:8px}.directory-intro>p{font-size:13px}.directory-intro .directory-status{font-size:11px;line-height:1.9}.search-form{flex-wrap:wrap;gap:9px;margin-bottom:17px}.search-box{flex-basis:100%;padding-inline:10px;gap:8px}.search-box input{font-size:13px;height:40px}kbd{display:none}.method-filter{min-width:175px;height:36px}.method-filter select{font-size:12px}.directory-toolbar h2{font-size:16px}#result-count{font-size:11px}.platform-entry{padding-block:19px 20px}.entry-heading{gap:5px 11px}.entry-heading h3{font-size:20px}.entry-heading>span{font-size:11px}.entry-category{font-size:11px}.entry-description{font-size:13px;line-height:1.95;margin-block:9px 12px}.entry-facts{font-size:12px;line-height:2}.entry-facts>div{grid-template-columns:55px minmax(0,1fr);gap:10px;padding-block:4px}.entry-links{font-size:12px;gap:8px 16px;margin-top:13px}.entry-links>span{font-size:10px}.site-footer{font-size:10px;gap:11px;padding-block:18px 22px}.site-footer nav{font-size:11px;gap:17px}.empty-category,.empty-state{padding-block:26px 35px}.empty-category p,.empty-state p{font-size:13px}.empty-category h2,.empty-state h3{font-size:17px}.breadcrumb{font-size:11px;padding-block:17px;gap:8px}.platform-hero{padding-top:6px;padding-bottom:19px}.platform-heading{gap:12px}.platform-heading h1{font-size:26px}.platform-icon.large{width:42px;height:42px;font-size:21px}.platform-icon.large.theme-okx{font-size:16px}.platform-heading .eyebrow{font-size:10px}.platform-intro{font-size:13px;margin-top:14px}.tags{font-size:11px;gap:5px 14px}.start-card>p{font-size:12px}.start-card h2{font-size:17px}.start-card>.button{font-size:12px;padding:8px 10px;margin-right:6px;gap:9px}.section-nav{justify-content:space-between;gap:7px;font-size:11px}.detail-section{padding-block:22px}.detail-section h2{font-size:20px;margin-bottom:15px}.capability h3{font-size:15px}.capability>p{font-size:13px}.capability-condition{font-size:12px}.source-inline{font-size:10px}.fact-table{font-size:12px}.fact-table>div{grid-template-columns:63px minmax(0,1fr);gap:10px}.content-list,.steps p{font-size:13px}.steps>li{gap:12px}.steps h3{font-size:14px}.cost-note h3{font-size:14px}.subheading{font-size:15px}.review-note .content-list{font-size:12px}.source-list li{gap:10px}.source-status{font-size:10px}.related-grid{gap:17px 25px}.related-grid strong{font-size:13px}.related-grid .platform-icon{width:28px;height:28px;font-size:16px}.reading-heading h1{font-size:25px}.reading-content h2{font-size:19px}.reading-content p{font-size:13px}.reading-heading>p{font-size:13px}.guide-definitions dd{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}