:root{--bg:#F4F7FA;--white:#fff;--soft:#EAF1F6;--mint:#E9F8F8;--nav:#102E46;--deep:#163C57;--aqua:#13B8C5;--blue:#237BD3;--heading:#18364B;--body:#344C60;--muted:#64798A;--line:#DCE6ED;--footer:#0B2539;--max:1200px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:25px}body{margin:0;background:var(--bg);color:var(--body);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}a{color:#1667a7;text-underline-offset:3px}a:hover{color:#094e88}button{font:inherit}button,a{touch-action:manipulation}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #13B8C5;outline-offset:3px}img{max-width:100%}.container{max-width:calc(var(--max) + 56px);padding-inline:28px;margin-inline:auto}.skip-link{position:absolute;top:-90px;left:10px;background:#fff;padding:10px;z-index:1000}.skip-link:focus{top:10px}.site-header{background:#fff;border-bottom:1px solid var(--line)}.brand-bar{height:72px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;flex:0 1 auto;min-width:0;color:var(--heading);text-decoration:none}.brand img{display:block;max-height:38px;width:auto;height:auto;object-fit:contain}.brand-fallback{font-size:23px;font-weight:800;line-height:1.1;white-space:nowrap}.brand-fallback small{font-size:10px;display:block;letter-spacing:.12em}.brand-subtitle{font-size:12px;color:var(--muted);margin-right:auto;white-space:nowrap}.brand-subtitle b{color:var(--aqua);padding:0 5px}.registration-link{display:inline-flex;background:var(--deep);color:#fff;text-decoration:none;padding:8px 20px;border-radius:10px;font-size:14px;font-weight:700;min-height:40px;align-items:center;white-space:nowrap}.registration-link:hover{color:#fff;background:#0d5a75}.desktop-nav{background:var(--nav)}.nav-inner{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));align-items:center;min-height:50px;gap:2px}.nav-inner a{display:flex;align-items:center;justify-content:center;color:#e7f1f6;text-decoration:none;padding:11px 3px 9px;border-bottom:3px solid transparent;font-size:14px;white-space:nowrap}.nav-inner a[aria-current=page]{color:#fff;border-color:var(--aqua);font-weight:700}.nav-inner a:hover{background:#1c435d;color:white}.mobile-toggle-wrap,.mobile-shortcuts,.nojs-nav{display:none}.page-main{padding-top:32px;padding-bottom:70px;min-height:55vh}h1,h2,h3{color:var(--heading);line-height:1.35;margin:0 0 .75em}h1{font-size:35px;letter-spacing:-.02em}h2{font-size:26px}h3{font-size:20px}p{margin:0 0 1.1em}ul,ol{padding-left:1.4em}li{margin-bottom:.35em}.eyebrow{display:block;color:#087c88;font-size:13px;letter-spacing:.14em;font-weight:800;margin-bottom:12px}.lead{font-size:17px;line-height:1.85;color:#38556a;max-width:850px}.breadcrumb{display:flex;gap:12px;font-size:13px;color:var(--muted);margin:0 0 26px}.breadcrumb a{color:#496c85;text-decoration:none}.page-intro{padding:26px 0 32px;border-bottom:1px solid var(--line);margin-bottom:44px}.page-intro p{max-width:850px}.section{margin-block:54px}.section-head{max-width:780px;margin-bottom:24px}.section-head p{color:var(--muted)}.section-label{font-size:13px;color:#117f89;font-weight:700;letter-spacing:.08em;margin-bottom:8px}.hero{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);align-items:center;gap:36px;padding:34px 0 12px}.hero h1{font-size:42px}.hero p{max-width:620px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.button{display:inline-flex;align-items:center;min-height:44px;padding:9px 19px;border-radius:10px;background:var(--deep);color:#fff;font-weight:700;text-decoration:none}.button.secondary{background:#dff5f5;color:#075b65}.button:hover{background:#126474;color:#fff}.media-frame{display:flex;align-items:center;justify-content:center;min-width:0;width:100%;margin:0;padding:8px;border-radius:14px;background:var(--soft)}.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--wide{--media-limit:210px}.media-frame--mobile{--media-limit:350px;max-width:320px;margin-inline:auto}.media-placeholder{min-height:100px;width:100%;display:grid;place-items:center;padding:24px;border:1px dashed #b7ccd8;color:#6c8191;font-size:13px;text-align:center}.hero .media-frame{min-height:180px}.index-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 32px;border-top:1px solid var(--line)}.index-entry{border-bottom:1px solid var(--line);padding:20px 0;display:grid;grid-template-columns:44px 1fr;gap:12px}.index-number{font-weight:800;font-size:22px;color:#12a0b0}.index-entry h3{font-size:19px;margin:0 0 5px}.index-entry p{font-size:14px;margin:0 0 6px}.index-entry a{font-size:14px;font-weight:700}.feature-split{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);gap:22px}.feature-panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px}.feature-panel.major{background:var(--deep);color:#e8f3f8}.feature-panel.major h3{color:#fff}.feature-panel.major a{color:#8de4eb}.feature-panel h3{font-size:22px}.short-stack{display:grid;gap:18px}.short-stack article{border-bottom:1px solid var(--line);padding:4px 0 15px}.short-stack h3{font-size:18px}.side-media{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.1fr);gap:32px;align-items:center}.side-media.reverse{grid-template-columns:minmax(0,1.1fr) minmax(0,.95fr)}.soft-band{background:var(--soft);padding:30px;border-radius:16px}.mint-band{background:var(--mint);padding:28px;border-radius:14px}.three-notes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.note{padding:23px;background:#fff;border:1px solid var(--line);border-radius:12px}.note:nth-child(2){transform:translateY(12px)}.note:nth-child(3){transform:translateY(24px)}.note h3{font-size:18px}.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px;counter-reset:step}.step{padding:18px 15px;border-top:3px solid var(--aqua);background:#fff}.step::before{counter-increment:step;content:'0' counter(step);display:block;font-weight:800;color:#078b98;font-size:24px}.step h3{font-size:17px;margin:6px 0}.step p{font-size:14px}.editor-note{padding:24px 28px;border-left:4px solid var(--aqua);background:#fff}.chapter-layout{display:grid;grid-template-columns:minmax(0,1fr) 265px;gap:32px;align-items:start}.article-column{min-width:0;max-width:800px}.article-column h2,.article-wide h2{margin-top:34px}.article-column h3,.article-wide h3{margin-top:22px}.aside-index{padding:22px;background:#fff;border:1px solid var(--line);border-radius:12px}.aside-index a{display:block;padding:8px 0;border-bottom:1px solid var(--line);text-decoration:none}.aside-index a:last-child{border:0}.info-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.info-grid article{padding:23px;background:#fff;border:1px solid var(--line);border-radius:11px}.info-grid h3{font-size:18px}.table-scroll{max-width:100%;overflow-x:auto;margin:24px 0 30px;border:1px solid var(--line);border-radius:10px;background:#fff}table{width:100%;border-collapse:collapse;min-width:570px}caption{text-align:left;font-weight:700;color:var(--heading);padding:14px 16px}th,td{text-align:left;vertical-align:top;padding:13px 16px;border-bottom:1px solid var(--line);font-size:14px}th{color:#15364e;background:var(--soft)}tr:last-child td{border-bottom:0}.article-wide{max-width:850px;margin-inline:auto}.pullquote{margin:30px 0;border-left:4px solid var(--aqua);padding:16px 24px;background:#eaf7f7;font-size:19px;color:#245266}.timeline{counter-reset:time;display:grid;gap:15px;margin:22px 0}.timeline-item{padding:20px 24px 20px 75px;background:#fff;border:1px solid var(--line);border-radius:12px;position:relative}.timeline-item:before{counter-increment:time;content:counter(time);position:absolute;left:22px;top:20px;background:var(--deep);color:#fff;display:grid;place-items:center;width:34px;height:34px;border-radius:50%;font-weight:bold}.timeline-item h3{margin:0 0 6px}.topic-nav{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 30px}.topic-nav a{display:inline-flex;padding:8px 14px;background:#e7f0f6;border:1px solid #cee0eb;border-radius:9px;text-decoration:none;font-weight:700;font-size:14px}.topic-nav a:hover{background:#d4eff3}.esports-intro{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:30px;align-items:center}.matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.matrix article{background:#fff;border-top:4px solid var(--aqua);padding:23px;box-shadow:0 1px 0 var(--line)}.matrix h3{font-size:22px}.matrix strong{color:#185572}.alternating article{display:grid;grid-template-columns:180px 1fr;gap:25px;padding:25px 0;border-bottom:1px solid var(--line)}.alternating article:nth-child(even){grid-template-columns:1fr 180px}.alternating article:nth-child(even) .alt-tag{order:2}.alt-tag{font-size:27px;color:#138c9c;font-weight:800}.gallery-intro{display:grid;grid-template-columns:1.25fr 1fr;gap:30px;align-items:center}.gallery{display:grid;grid-template-columns:1fr 1fr;gap:24px}.gallery article{background:#fff;padding:18px;border:1px solid var(--line);border-radius:14px}.gallery article:nth-child(2){margin-top:42px}.gallery h3{margin:18px 0 8px}.manual{max-width:900px;margin-inline:auto}.manual section{padding:30px 0;border-bottom:1px solid var(--line)}.manual section:first-of-type{padding-top:0}.manual .media-frame{max-width:650px;margin:25px auto}.faq-list{display:grid;gap:9px}.faq-list details{border:1px solid var(--line);border-radius:9px;background:#fff;padding:0 17px}.faq-list summary{cursor:pointer;padding:14px 2px;font-weight:700;color:var(--heading)}.faq-list details p{font-size:15px;border-top:1px solid var(--line);padding-top:13px}.service-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:34px}.service-nav{align-self:start;background:#fff;border:1px solid var(--line);padding:20px;border-radius:12px}.service-nav a{display:block;padding:8px 0}.service-content{min-width:0}.service-content section{margin-bottom:45px}.service-content .table-scroll{margin-top:14px}.service-content h2{margin-bottom:15px}.related{margin-top:65px;padding-top:30px;border-top:1px solid var(--line)}.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.related-grid a{display:flex;justify-content:space-between;gap:8px;align-items:center;padding:17px;border-radius:10px;border:1px solid var(--line);background:#fff;text-decoration:none;font-weight:700}.related-grid span{color:#0ba6b5}.site-footer{background:var(--footer);color:#DCECF5;padding-top:45px}.footer-grid{display:grid;grid-template-columns:1.7fr 1fr;gap:70px}.footer-title{color:#fff;font-size:23px;font-weight:800}.footer-title small{font-size:12px;letter-spacing:.12em;margin-left:9px}.footer-grid p{max-width:690px;font-size:14px;color:#c3d7e3}.footer-grid h2{font-size:17px;color:#fff}.footer-grid nav{display:grid;grid-template-columns:1fr 1fr;gap:5px 12px}.footer-grid a,.footer-bottom a{color:#cee9f3;text-decoration:none;font-size:14px}.footer-bottom{border-top:1px solid #315064;display:flex;justify-content:space-between;gap:15px;padding-block:18px;margin-top:30px;font-size:13px}.to-top{position:fixed;right:21px;bottom:24px;width:44px;height:44px;border:0;border-radius:50%;background:var(--deep);color:#fff;cursor:pointer;z-index:10}.drawer-backdrop,.mobile-drawer{display:none}
@media(max-width:1024px){.container{padding-inline:22px}.brand-bar{gap:15px}.brand-subtitle{font-size:11px}.feature-split{grid-template-columns:1.4fr 1fr}.chapter-layout{grid-template-columns:minmax(0,1fr) 210px}}
@media(max-width:920px){.brand-bar{height:62px;display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:10px}.mobile-toggle-wrap{display:block}.menu-toggle{width:40px;height:40px;background:none;border:1px solid var(--line);border-radius:9px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer}.menu-toggle span{display:block;width:19px;height:2px;background:var(--nav)}.brand{justify-content:center;min-width:0}.brand img{max-height:30px;max-width:100%;width:auto}.brand-fallback{font-size:19px}.brand-subtitle,.desktop-nav{display:none}.registration-link{padding:7px 10px;font-size:12px;min-height:38px}.drawer-backdrop{display:block;position:fixed;inset:0;background:rgba(9,29,42,.55);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.drawer-backdrop[hidden]{display:none}.drawer-backdrop.is-open{opacity:1;visibility:visible;pointer-events:auto}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(86vw,340px);background:#fff;z-index:81;transform:translateX(-102%);visibility:hidden;transition:transform .22s,visibility .22s;overflow-y:auto;box-shadow:3px 0 16px #1b354933}.mobile-drawer.is-open{transform:translateX(0);visibility:visible}.drawer-head{display:flex;justify-content:space-between;align-items:center;padding:17px 20px;border-bottom:1px solid var(--line)}.drawer-close{background:none;border:0;font-size:30px;width:42px;height:42px;cursor:pointer}.mobile-drawer nav{display:grid;padding:10px 20px 30px}.mobile-drawer nav span{color:#648093;font-size:12px;font-weight:700;margin:20px 0 7px}.mobile-drawer nav a{color:var(--heading);text-decoration:none;padding:10px;border-bottom:1px solid var(--line);font-size:16px}.nojs-nav{display:flex;flex-wrap:wrap;gap:6px;padding-block:12px}.nojs-nav a{padding:5px 9px;background:var(--soft);font-size:13px}.mobile-shortcuts{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 20px;padding-bottom:25px}.mobile-shortcuts a{font-size:13px;text-decoration:none}.page-main{padding-top:23px}.hero h1{font-size:36px}}
@media(max-width:760px){.hero,.feature-split,.side-media,.side-media.reverse,.esports-intro,.gallery-intro,.chapter-layout,.service-layout{grid-template-columns:minmax(0,1fr)}.hero{gap:20px}.hero .media-frame{min-height:130px}.side-media.reverse .media-frame{order:0}.side-media.reverse>div{order:1}.three-notes,.info-grid,.matrix{grid-template-columns:1fr 1fr}.note:nth-child(n){transform:none}.steps{grid-template-columns:1fr 1fr}.aside-index{order:2}.gallery article:nth-child(2){margin:0}.service-nav{order:2}.service-content{order:1}.footer-grid{gap:22px;grid-template-columns:1fr 1fr}.alternating article,.alternating article:nth-child(even){grid-template-columns:110px 1fr}.alternating article:nth-child(even) .alt-tag{order:0}}
@media(max-width:640px){body{font-size:15px}.container{padding-inline:16px}.page-main{padding-bottom:40px}h1{font-size:27px}h2{font-size:21px}h3{font-size:18px}.hero h1{font-size:30px}.hero{padding-top:16px}.lead{font-size:16px}.section{margin-block:37px}.section-head{margin-bottom:17px}.page-intro{margin-bottom:30px;padding-bottom:23px}.index-list,.three-notes,.info-grid,.matrix,.gallery,.related-grid,.footer-grid{grid-template-columns:1fr}.feature-panel{padding:20px}.soft-band,.mint-band{padding:20px}.index-entry{grid-template-columns:35px 1fr}.gallery article:nth-child(n){margin:0}.steps{gap:10px}.step{padding:12px}.media-frame--hero{--media-limit:205px}.media-frame--feature{--media-limit:185px}.media-frame--card{--media-limit:145px}.media-frame--wide{--media-limit:135px}.media-frame--mobile{--media-limit:285px;max-width:250px}.footer-grid nav{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column;margin-top:18px}.alternating article,.alternating article:nth-child(even){grid-template-columns:1fr;gap:6px}.timeline-item{padding:16px 16px 16px 62px}.timeline-item:before{left:14px;top:18px}.manual section{padding-block:24px}.hero-actions{gap:8px}}
@media(max-width:390px){.brand img{max-height:27px}.brand-fallback{font-size:17px}.brand-bar{gap:5px}.registration-link{padding-inline:7px}.steps{grid-template-columns:1fr}.footer-grid nav{gap:2px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}
