:root{--bg:#F4F7FA;--paper:#fff;--soft:#EAF1F6;--aqua:#E9F8F8;--navy:#102E46;--deep:#163C57;--teal:#13B8C5;--blue:#237BD3;--heading:#18364B;--text:#344C60;--muted:#64798A;--line:#DCE6ED;--footer:#0B2539;--wrap:1200px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:25px}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif;overflow-wrap:anywhere}body.nav-open{overflow:hidden}a{color:#1766A8;text-underline-offset:3px}a:hover{color:#008994}button{font:inherit}img{max-width:100%;height:auto}h1,h2,h3,p,figure{margin-top:0}h1,h2,h3{color:var(--heading);line-height:1.35}h1{font-size:clamp(32px,3vw,42px);letter-spacing:-.025em}h2{font-size:26px;letter-spacing:-.012em}h3{font-size:20px}p{margin-bottom:1.15em}strong{color:var(--heading)}.container{width:min(var(--wrap),calc(100% - 56px));margin-inline:auto;min-width:0}.section{margin-block:58px}.section-header{max-width:770px;margin-bottom:25px}.section-kicker,.eyebrow{font-size:12px;font-weight:800;color:#087D8B;letter-spacing:.16em;text-transform:uppercase}.muted{color:var(--muted)}.lead{font-size:17px;line-height:1.83;max-width:790px}.site-header{position:relative;z-index:20}.brand-bar{background:var(--paper);border-bottom:1px solid var(--line)}.brand-content{min-height:71px;display:flex;align-items:center;gap:22px}.brand-logo{display:inline-flex;align-items:center;flex-shrink:0;text-decoration:none;color:var(--heading)}.brand-logo .media-frame{border:0;background:transparent;padding:0;border-radius:0;max-width:225px}.brand-logo img{max-height:38px;max-width:220px}.logo-fallback{font-size:23px;font-weight:900;line-height:1.05}.logo-fallback small{display:block;font-size:9px;letter-spacing:.2em;margin-top:5px}.brand-descriptor{color:var(--muted);font-size:13px}.brand-descriptor i{font-style:normal;margin:0 7px;color:#AAB8C5}.register-link{margin-left:auto;display:inline-flex;justify-content:center;align-items:center;min-height:42px;padding:0 20px;background:var(--navy);color:white!important;border-radius:8px;font-size:14px;font-weight:700;text-decoration:none;white-space:nowrap}.register-link:hover{background:#14617D}.desktop-nav{background:var(--navy)}.nav-inner{display:flex;align-items:stretch;justify-content:space-between;gap:3px;min-height:50px}.main-nav-link{display:flex;justify-content:center;align-items:center;position:relative;flex:1;min-width:0;padding:7px 6px;white-space:nowrap;color:#E6F0F6;text-decoration:none;font-size:14px;font-weight:600}.main-nav-link:hover,.main-nav-link.is-active{color:white}.main-nav-link.is-active{font-weight:800}.main-nav-link.is-active:after{content:'';position:absolute;bottom:0;left:23%;right:23%;height:3px;background:var(--teal)}.menu-toggle{display:none}.nojs-navigation{display:flex;gap:12px;flex-wrap:wrap;padding-block:12px}.nojs-navigation a{font-size:14px}.skip-link{position:absolute;left:10px;top:-60px;background:white;padding:9px;z-index:100}.skip-link:focus{top:10px}.drawer-overlay,.mobile-drawer{display:none}.page-intro{padding-block:42px 20px}.page-intro h1{font-size:35px;margin-bottom:15px;max-width:880px}.page-intro .lead{margin:0}.crumbs{display:flex;gap:12px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:15px}.crumbs a{color:#47728B;text-decoration:none}.page-article{max-width:790px}.article-section{margin-bottom:42px}.article-section h2{padding-bottom:11px;border-bottom:1px solid var(--line)}.article-section h3{margin-top:27px}.article-section p{line-height:1.83}.reading-grid{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:42px;align-items:start}.reading-grid>*{min-width:0}.side-index{padding:25px;background:var(--soft);border-radius:12px}.side-index h2{font-size:18px;margin:0 0 14px}.side-index a{display:block;padding:8px 0;border-bottom:1px solid #D2E1EA;font-size:14px;text-decoration:none}.anchor-nav{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0 30px}.anchor-nav a{border:1px solid var(--line);background:white;border-radius:7px;padding:7px 13px;text-decoration:none;font-size:14px}.anchor-nav a:hover{border-color:var(--teal)}.media-frame{display:flex;align-items:center;justify-content:center;margin:0;min-width:0;max-width:100%;padding:9px;background:var(--soft);border-radius:14px;overflow:hidden}.media-frame img{display:block;width:auto;height:auto;max-width:100%;max-height:var(--media-limit,220px);object-fit:contain;object-position:center}.media-frame--hero{--media-limit:310px}.media-frame--feature{--media-limit:250px}.media-frame--card{--media-limit:185px}.media-frame--banner{--media-limit:210px}.media-frame--mobile{--media-limit:350px;max-width:320px}.media-frame--logo{--media-limit:38px}.media-frame--missing{min-height:105px;color:#718898;font-size:13px;border:1px dashed #C4D4DE}.media-frame--missing.media-frame--hero{min-height:180px}.cover-hero{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);gap:35px;align-items:center;padding-top:49px;padding-bottom:23px}.cover-hero>*{min-width:0}.cover-hero h1{font-size:clamp(34px,3.4vw,44px);margin:12px 0 20px}.cover-copy p{max-width:620px}.cta-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 19px;border-radius:8px;font-weight:700;font-size:14px;text-decoration:none;background:var(--deep);color:white!important}.btn--secondary{background:var(--aqua);color:var(--heading)!important;border:1px solid #C3E8E8}.topic-directory{display:grid;grid-template-columns:1fr 1fr;gap:0 34px;border-top:2px solid var(--navy)}.topic-directory article{border-bottom:1px solid var(--line);padding:20px 3px}.topic-directory h3{font-size:19px;margin:0 0 8px}.topic-directory p{font-size:14px;margin:0 0 7px}.topic-directory a{text-decoration:none;font-weight:700;font-size:14px}.focus-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:18px}.feature-lead,.focus-side article{background:white;border:1px solid var(--line);border-radius:13px;padding:27px}.feature-lead{border-top:4px solid var(--teal)}.feature-lead h3{font-size:24px}.focus-side{display:grid;gap:18px}.focus-side article h3{font-size:19px}.focus-grid p{font-size:15px}.split-feature{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);align-items:center;gap:35px}.split-feature>*{min-width:0}.split-feature.reverse{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr)}.tinted-band{padding:35px;background:var(--aqua);border-radius:14px}.three-notes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.three-notes article{padding:24px;border-left:3px solid var(--teal);background:white}.three-notes article:nth-child(2){margin-top:19px}.three-notes article:nth-child(3){margin-top:38px}.three-notes h3{margin-bottom:10px}.three-notes p{font-size:14px;margin-bottom:0}.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;counter-reset:step}.steps article{min-width:0;border-top:2px solid var(--navy);padding:15px 12px 0 0;counter-increment:step}.steps article:before{content:'0' counter(step);font-size:13px;font-weight:800;color:#0D929D}.steps h3{margin:10px 0}.steps p{font-size:14px}.editorial-note{border-top:1px solid var(--line);padding-top:22px;color:var(--muted);font-size:14px}.comparison{overflow-x:auto;max-width:100%;margin:20px 0 35px;border-radius:10px;border:1px solid var(--line)}table{border-collapse:collapse;width:100%;min-width:570px;background:white;font-size:15px;text-align:left}caption{caption-side:top;text-align:left;padding:12px 16px;font-weight:700;color:var(--heading)}th,td{padding:13px 15px;border-bottom:1px solid var(--line);vertical-align:top}thead th{color:var(--heading);background:var(--soft)}tbody th{color:var(--heading);font-weight:700}.info-band{background:var(--deep);padding:28px 32px;border-radius:12px;color:#E8F5FA}.info-band h2,.info-band h3,.info-band strong{color:#fff}.info-band a{color:#7EE5EA}.process-list{counter-reset:p;display:grid;gap:15px}.process-list article{counter-increment:p;background:white;border-left:4px solid var(--teal);padding:18px 24px;display:grid;grid-template-columns:35px 1fr;gap:12px}.process-list article:before{content:counter(p);font-weight:900;font-size:24px;color:#087F8E}.process-list h3{margin-bottom:7px}.process-list p{margin:0}.editorial-columns{columns:2;column-gap:35px}.editorial-columns p{break-inside:avoid}.esports-matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.esports-matrix article{background:white;padding:24px;border-top:4px solid var(--teal);border-radius:5px 5px 12px 12px}.esports-matrix article:nth-child(2){border-top-color:var(--blue)}.esports-matrix article:nth-child(3){border-top-color:var(--navy)}.esports-matrix h3{margin-bottom:12px}.esports-matrix p{font-size:14px}.exhibit-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}.exhibit-grid article{min-width:0}.exhibit-grid article:nth-child(2){margin-top:65px}.exhibit-grid p{font-size:15px}.rule-manual{max-width:830px}.rule-manual .article-section{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:26px 32px}.rule-manual .article-section h2{margin-top:0}.faq-list{display:grid;gap:10px}.faq-list details{border:1px solid var(--line);border-radius:8px;background:white}.faq-list summary{cursor:pointer;padding:14px 19px;color:var(--heading);font-weight:700}.faq-list summary::marker{color:#098D99}.faq-answer{padding:0 19px 14px;color:var(--text)}.faq-answer p{margin:0}.about-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:37px}.about-layout>*{min-width:0}.about-aside{background:var(--soft);align-self:start;padding:20px;border-radius:12px}.about-aside a{display:block;font-size:14px;padding:7px 0}.about-main{max-width:860px}.about-main .article-section{margin-bottom:45px}.related-reading{margin-block:55px 65px;border-top:2px solid var(--navy);padding-top:22px}.related-reading h2{font-size:22px}.related-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.related-links a{padding:18px;background:#fff;border:1px solid var(--line);border-radius:9px;text-decoration:none;font-weight:700;font-size:14px;display:flex;justify-content:space-between;gap:10px}.site-footer{background:var(--footer);color:#DCECF5;margin-top:45px;padding:44px 0 20px}.footer-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:55px}.site-footer strong{color:#fff}.footer-intro{max-width:590px}.footer-intro strong{font-size:23px}.footer-intro small{font-size:10px;display:block;letter-spacing:.18em}.site-footer p{font-size:13px;line-height:1.8;margin:12px 0}.footer-nav nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px;margin-top:12px}.footer-nav a{color:#DCECF5;text-decoration:none;font-size:13px}.footer-nav a:hover{text-decoration:underline}.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:26px;padding-top:17px;border-top:1px solid #315166;color:#ABC4D2;font-size:12px}.mobile-bottom-links{display:none}.back-top{position:fixed;right:20px;bottom:20px;width:43px;height:43px;border:0;background:var(--navy);color:white;border-radius:50%;cursor:pointer;z-index:10;box-shadow:0 4px 15px #102e4633}.back-top[hidden]{display:none}.subtle-rule{height:1px;background:var(--line);margin:24px 0}.number-tag{font-size:13px;color:#0C8D96;font-weight:800}.article-callout{background:var(--aqua);padding:22px 26px;border-left:4px solid var(--teal);border-radius:0 9px 9px 0;margin:24px 0}.article-callout p:last-child{margin:0}.content-wide{max-width:1000px}.section-panel{background:var(--paper);padding:29px;border-radius:13px;border:1px solid var(--line)}:focus-visible{outline:3px solid #0BA1AE;outline-offset:3px}
@media(max-width:1024px){.container{width:calc(100% - 44px)}.reading-grid{gap:26px;grid-template-columns:minmax(0,1fr) 220px}.brand-descriptor{font-size:12px}.section{margin-block:47px}.split-feature{gap:25px}}
@media(max-width:920px){.brand-content{height:63px;min-height:63px;position:relative;justify-content:space-between;gap:8px}.menu-toggle{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:40px;height:40px;border:1px solid var(--line);background:white;border-radius:8px;flex-shrink:0;cursor:pointer}.menu-toggle span{display:block;width:18px;height:2px;background:var(--navy);border-radius:2px}.brand-logo{position:absolute;left:50%;transform:translateX(-50%);max-width:calc(100% - 206px);justify-content:center}.brand-logo .media-frame{max-width:100%}.brand-logo img{max-height:29px;max-width:100%}.logo-fallback{font-size:17px;white-space:nowrap}.logo-fallback small{font-size:7px}.brand-descriptor,.desktop-nav{display:none}.register-link{margin-left:auto;min-height:39px;padding:0 12px;font-size:12px}.drawer-overlay{display:block;position:fixed;inset:0;z-index:40;background:rgba(5,23,35,.5);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.drawer-overlay.is-visible{opacity:1;visibility:visible;pointer-events:auto}.mobile-drawer{display:block;position:fixed;top:0;bottom:0;left:0;width:min(86vw,340px);background:#fff;z-index:41;transform:translateX(-105%);transition:transform .2s ease;overflow-y:auto;box-shadow:12px 0 30px #07192b17;visibility:hidden}.mobile-drawer.is-open{transform:translateX(0);visibility:visible}.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}.drawer-close{width:40px;height:40px;background:var(--soft);border:0;border-radius:9px;font-size:26px;cursor:pointer}.drawer-group-title{margin:19px 20px 5px;color:var(--muted);font-size:12px;font-weight:800;letter-spacing:.1em}.mobile-drawer nav>a{display:block;padding:11px 20px;color:var(--heading);text-decoration:none;font-size:15px}.mobile-drawer nav>a[aria-current]{background:var(--aqua);font-weight:800;border-left:3px solid var(--teal)}.mobile-bottom-links{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:22px}.mobile-bottom-links a{font-size:13px;text-decoration:none}.page-intro{padding-top:32px}}
@media(max-width:760px){.reading-grid,.about-layout{grid-template-columns:1fr}.reading-grid .side-index{order:2}.about-aside{order:2}.focus-grid,.split-feature,.split-feature.reverse,.cover-hero,.exhibit-grid{grid-template-columns:1fr}.cover-hero{gap:24px}.cover-copy{order:1}.cover-hero>.media-frame{order:2}.exhibit-grid article:nth-child(2){margin-top:0}.three-notes,.esports-matrix{grid-template-columns:1fr}.three-notes article:nth-child(n){margin-top:0}.steps{grid-template-columns:1fr 1fr}.footer-grid{gap:25px}.related-links{grid-template-columns:1fr}.page-article,.rule-manual{max-width:100%}.focus-side{grid-template-columns:1fr 1fr}.editorial-columns{columns:1}}
@media(max-width:640px){body{font-size:15px}.container{width:calc(100% - 32px)}h1{font-size:29px}h2{font-size:22px}h3{font-size:18px}.page-intro h1{font-size:27px}.cover-hero h1{font-size:30px}.lead{font-size:15px}.section{margin-block:35px}.section-panel{padding:20px}.topic-directory{grid-template-columns:1fr}.focus-side,.footer-grid{grid-template-columns:1fr}.feature-lead,.focus-side article{padding:20px}.feature-lead h3{font-size:21px}.tinted-band{padding:22px}.steps{grid-template-columns:1fr 1fr}.steps article h3{font-size:17px}.media-frame--hero{--media-limit:205px}.media-frame--feature{--media-limit:185px}.media-frame--card{--media-limit:145px}.media-frame--banner{--media-limit:135px}.media-frame--mobile{--media-limit:285px;max-width:250px}.media-frame--logo{--media-limit:30px}.rule-manual .article-section{padding:20px 18px}.page-intro{padding-top:26px}.site-footer{padding-top:32px}.brand-logo{max-width:calc(100% - 188px)}.register-link{padding-inline:10px}.article-section{margin-bottom:34px}}
@media(max-width:390px){.brand-logo{max-width:calc(100% - 168px)}.logo-fallback{font-size:15px}.register-link{font-size:11px;padding-inline:8px}.cta-row .btn{flex:1;padding-inline:11px}.steps{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
