*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:#333;background:#fff;font:16px/1.78 system-ui,"PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:#F45132}img{display:block;max-width:100%}.shell{max-width:1100px;padding:0 24px;margin:auto}.skip{position:absolute;top:-60px;background:white;z-index:99}.skip:focus{top:0}.micro-bar{background:#f6f7f9;color:#666;font-size:12px}.micro-inner{display:flex;justify-content:space-between;padding-top:5px;padding-bottom:5px}.site-head{border-bottom:1px solid #ededed}.head-main{display:flex;align-items:center;gap:22px;min-height:82px}.logo{display:flex;align-items:center;min-width:140px}.logo img{height:40px;width:auto;object-fit:contain}.logo-text{font-size:27px;font-weight:900;color:#F45132}.logo-text span{color:#1a1a1a}.head-tagline{flex:1;color:#222;font-weight:750;font-size:15px;line-height:1.4}.head-tagline small{color:#888;font-size:12px;font-weight:400}.join{background:#F45132;color:white!important;min-width:88px;text-align:center;padding:7px 23px;border-radius:30px;font-size:15px;font-weight:700}.join:hover{background:#FF684E}.desktop-nav{display:flex;gap:8px;justify-content:space-between;align-items:center}.desktop-nav a{display:inline-block;padding:10px 16px 12px;font-size:14px;font-weight:650;border-bottom:3px solid transparent;white-space:nowrap}.desktop-nav .selected{border-color:#F45132;color:#C43A22}.subhead{border-bottom:1px solid #eee;background:#fff}.subnav{display:flex;align-items:center;gap:24px;padding-top:9px;padding-bottom:9px;white-space:nowrap;overflow:auto;font-size:13px;color:#777}.subnav strong{color:#F45132}.main{padding-top:30px;padding-bottom:56px}h1,h2,h3{color:#1a1a1a;line-height:1.4}h1{font-size:35px;line-height:1.35;margin:8px 0 16px}h2{font-size:24px;margin:0 0 16px}h3{font-size:19px;margin:0 0 10px}p{margin:0 0 15px}.kicker{color:#C43A22;font-size:13px;letter-spacing:1.4px;font-weight:750}.lead{color:#555;font-size:16px}.home-hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:32px;align-items:center}.home-intro{border-left:3px solid #F45132;padding-left:23px}.hero-links{border-top:1px solid #e9e9e9;padding-top:12px;display:grid;gap:7px;font-size:14px}.picture{position:relative;overflow:hidden;border-radius:12px;background:#f6f7f9;width:100%;max-width:100%}.picture.wide{aspect-ratio:16/9}.picture.portrait{aspect-ratio:3/4}.picture>img{width:100%;height:100%;position:absolute;inset:0;object-fit:contain;object-position:center}.image-empty{position:absolute;inset:0;background:#f6f7f9}.hero-photo .picture{max-height:280px}.block{margin-top:42px}.section-title{display:flex;justify-content:space-between;align-items:center;gap:20px;border-bottom:1px solid #eee;margin-bottom:20px}.section-title h2{border-bottom:3px solid #F45132;padding-bottom:10px;margin-bottom:-1px}.section-title a,.more{font-size:14px;color:#C43A22}.tiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.tile{border:1px solid rgba(0,0,0,.08);border-radius:12px;padding:22px;min-width:0}.tile b{display:block;color:#F45132;font-size:12px;margin-bottom:8px}.tile p{font-size:14px;color:#555}.split{display:grid;grid-template-columns: minmax(0,1.35fr) minmax(0,.65fr);gap:28px}.paper{padding:26px;border:1px solid #eee;background:#fbfbfb;border-radius:12px}.listlinks{padding:0;margin:0;list-style:none}.listlinks li{padding:12px 0;border-bottom:1px solid #eee}.listlinks a{font-weight:700}.listlinks small{display:block;color:#666;font-size:13px}.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:24px}.photo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.photo-grid figure{margin:0;min-width:0}.photo-grid figcaption{font-size:13px;color:#666;padding-top:8px}.rank-list{counter-reset:item;list-style:none;padding:0;margin:0}.rank-list li{display:flex;gap:17px;border-bottom:1px solid #eee;padding:14px 0}.rank-list li:before{counter-increment:item;content:counter(item,decimal-leading-zero);font-weight:800;color:#F45132}.rank-list span{display:block;font-size:13px;color:#666}.page-title{border-bottom:1px solid #eee;padding:4px 0 21px;margin-bottom:25px}.page-title h1{font-size:32px}.page-title .lead{max-width:800px}.breadcrumb{font-size:13px;color:#777}.page-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,.85fr);gap:40px}.article-sect{margin-bottom:28px}.article-sect h2{font-size:22px;border-left:3px solid #F45132;padding-left:12px}.article-sect p{line-height:1.86}.sidebox{border-top:3px solid #F45132;background:#f6f7f9;padding:20px;border-radius:4px 4px 12px 12px}.sidebox a{display:block;padding:9px 0;border-bottom:1px solid #e5e5e5;font-size:14px}.sidebox a:last-child{border:0}.image-set{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.image-item{border:1px solid #eee;border-radius:10px;padding:10px;min-width:0}.image-item .picture{border-radius:7px}.image-item p{text-align:center;font-size:13px;margin:7px 0 0;overflow-wrap:anywhere}.notice{font-size:13px;color:#666;background:#f6f7f9;border-left:3px solid #D7A84B;padding:14px 18px;margin-top:20px}.footer{background:#1a1a1a;color:#f5f5f5;padding-top:36px}.footer h2,.footer h3{color:white}.footer h2{font-size:20px}.footer h3{font-size:16px}.footer p{font-size:13px;color:#ccc}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px}.footer a{display:block;font-size:13px;color:#ddd;margin:5px 0}.foot-bottom{border-top:1px solid #444;display:flex;justify-content:space-between;gap:18px;padding-top:15px;padding-bottom:18px;margin-top:22px;font-size:12px;color:#bbb}.menu-toggle,.mobile-drawer,.drawer-mask,.bottom-nav{display:none}.menu-toggle{background:none;border:0;width:38px;padding:7px;cursor:pointer}.menu-toggle span{display:block;height:2px;margin:5px 0;background:#222}.drawer-close{background:transparent;border:0;font-size:29px;cursor:pointer}.drawer-head{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #eee;padding:16px}.drawer-section{padding:10px 18px;border-bottom:1px solid #eee}.drawer-section h2{font-size:14px;color:#F45132;margin:7px 0}.drawer-section a{display:block;padding:8px 2px;min-height:40px;font-size:14px}.bottom-nav{position:fixed;left:0;right:0;bottom:0;height:61px;background:white;z-index:9000;box-shadow:0 -2px 9px #0001;justify-content:space-around}.bottom-nav a{flex:1;text-align:center;padding:15px 0;font-size:14px}.bottom-nav a:last-child{color:#F45132;font-weight:700}@media(max-width:980px){.desktop-nav,.micro-bar,.head-tagline,.subhead{display:none}.menu-toggle{display:block}.head-main{min-height:58px;justify-content:space-between;gap:8px}.logo{min-width:0}.logo img{height:28px;width:auto;max-width:135px}.join{min-width:72px;min-height:36px;padding:5px 13px}.bottom-nav{display:flex}.main{padding-bottom:95px}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);height:100dvh;background:white;color:#1a1a1a;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;overflow-y:auto}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:11000;opacity:0;pointer-events:none}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}body.drawer-open{overflow:hidden}.shell{padding-left:20px;padding-right:20px}.tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.page-layout{gap:24px}.photo-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.image-set{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:650px){.shell{padding-left:16px;padding-right:16px}.main{padding-top:20px}.home-hero,.feature-row,.split,.page-layout{grid-template-columns:minmax(0,1fr)}.home-intro{padding-left:15px}.hero-photo .picture{max-height:190px}.block{margin-top:32px}h1{font-size:28px}.page-title h1{font-size:26px}h2{font-size:20px}.tile{padding:14px}.tile h3{font-size:16px}.photo-grid{grid-template-columns:1fr}.photo-grid .picture{max-height:180px}.image-set{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:1fr 1fr;gap:20px}.foot-bottom{display:block}.rank-list li{padding:11px 0}.paper{padding:18px}}@media(max-width:350px){.tiles{grid-template-columns:1fr}.logo-text{font-size:21px}.join{min-width:70px}.head-main{gap:3px}}
/* Global arena edition */
.home-hero{grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr)}.home-intro{border-left:0;border-top:4px solid #F45132;padding:18px 0 0}.section-title h2{letter-spacing:.3px}.tiles .tile:nth-child(2n){background:#fffaf8}.home-hero .hero-photo .picture{max-height:270px}@media(max-width:650px){.home-hero{grid-template-columns:1fr}.home-intro{order:2}.hero-photo{order:1}}
