:root{--bg:#F4F7FA;--surface:#fff;--pale:#EAF1F6;--cyan-pale:#E9F8F8;--nav:#102E46;--nav2:#163C57;--teal:#13B8C5;--blue:#237BD3;--heading:#18364B;--text:#344C60;--muted:#64798A;--line:#DCE6ED;--footer:#0B2539;--content:1200px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:22px}body{margin:0;color:var(--text);background:var(--bg);font:16px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif;overflow-wrap:break-word}img{max-width:100%;height:auto}a{color:#1265a1;text-underline-offset:3px}a:hover{color:#0d4d7b}button{font:inherit;cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:3px}.wrap{width:min(calc(100% - 56px),var(--content));margin-inline:auto}.site-header{background:#fff;position:relative;z-index:20}.brand-bar{height:72px;display:flex;align-items:center;gap:24px}.brand{text-decoration:none;display:flex;align-items:center;gap:18px;min-width:0;color:var(--heading)}.brand-image{display:block;min-width:0}.brand .media-frame{padding:0;background:none;border:0;justify-content:flex-start}.brand .media-frame img{max-height:38px}.brand-word{font-size:22px;letter-spacing:.045em;white-space:nowrap;color:var(--nav)}.brand-word em{font-style:normal;color:#078993}.brand-note{font-size:13px;letter-spacing:.03em;color:var(--muted);white-space:nowrap}.register-link{margin-left:auto;text-decoration:none;background:var(--teal);color:#072e37;border-radius:8px;padding:8px 19px;font-weight:700;white-space:nowrap}.register-link:hover{background:#0aa5b1;color:#062731}.desktop-nav{background:var(--nav)}.nav-inner{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));align-items:stretch}.desktop-nav a{min-width:0;text-align:center;text-decoration:none;color:#e8f5fa;padding:11px 5px 10px;font-size:15px;border-bottom:3px solid transparent;white-space:nowrap}.desktop-nav a:hover{background:#21465f;color:white}.desktop-nav a.active{font-weight:700;border-bottom-color:var(--teal);color:white}.menu-toggle,.mobile-drawer,.drawer-backdrop,.no-js-nav,.mobile-quick{display:none}.skip-link{position:absolute;left:8px;top:-80px;background:#fff;padding:9px;z-index:200}.skip-link:focus{top:8px}main{min-height:50vh}h1,h2,h3{font-weight:750;line-height:1.38;color:var(--heading);margin:0 0 16px}h1{font-size:35px;letter-spacing:-.025em}h2{font-size:27px}h3{font-size:20px}p{margin:0 0 17px}p:last-child{margin-bottom:0}strong{color:var(--heading)}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.12em;color:#07848e;text-transform:uppercase;margin-bottom:12px}.lead{font-size:17px;line-height:1.85;color:#486477}.page-intro{background:#eaf1f6;border-bottom:1px solid var(--line);padding:43px 0 39px}.page-intro .wrap{max-width:1200px}.page-intro p{max-width:870px}.breadcrumb{font-size:13px;margin-bottom:17px;color:var(--muted)}.breadcrumb a{color:#45697e}.section{margin-block:58px}.section-heading{max-width:750px;margin-bottom:24px}.section-heading p{color:var(--muted)}.panel{background:white;border:1px solid var(--line);border-radius:14px;padding:25px}.soft-panel{background:var(--pale);padding:25px;border-radius:14px}.dark-panel{background:var(--nav2);color:#e5f5fb;padding:28px;border-radius:14px}.dark-panel h2,.dark-panel h3,.dark-panel strong{color:#fff}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:35px;align-items:start}.feature-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);gap:42px;align-items:center}.feature-split.reverse{grid-template-columns:minmax(0,.85fr) minmax(0,1fr)}.feature-split>*{min-width:0}.reading{max-width:790px}.reading p{line-height:1.85}.reading h2{margin-top:36px}.reading h3{margin-top:25px}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.card-grid>*{min-width:0}.kicker{color:#0d7885;text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:700}.pill-link,.button-link{display:inline-flex;align-items:center;justify-content:center;min-height:43px;border-radius:8px;text-decoration:none;padding:9px 17px;font-weight:700}.button-link{background:var(--nav);color:#fff}.button-link:hover{background:#24506b;color:#fff}.pill-link{background:#e2f4f7;color:#0c5264}.pill-link:hover{background:#caeaed}.action-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.media-frame{display:flex;align-items:center;justify-content:center;max-width:100%;min-width:0;padding:8px;background:var(--pale);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--wide{--media-limit:210px}.media-frame--mobile{--media-limit:350px;max-width:320px;margin-inline:auto}.media-frame--logo{background:none;padding:0;--media-limit:38px}.media-placeholder{min-height:90px;text-align:center;background:linear-gradient(135deg,#eaf1f6,#e9f8f8);border:1px dashed #cbd9e0;color:#64798a;font-size:13px}.media-frame--hero.media-placeholder{min-height:200px}.media-frame--feature.media-placeholder{min-height:160px}.media-frame--mobile.media-placeholder{min-height:220px}.topic-nav{display:flex;gap:8px;flex-wrap:wrap;margin-top:19px}.topic-nav a{font-size:14px;background:white;border:1px solid var(--line);border-radius:8px;padding:7px 13px;text-decoration:none;font-weight:700}.note{border-left:4px solid var(--teal);background:#e9f8f8;padding:17px 21px;border-radius:0 10px 10px 0}.info-list{display:grid;gap:14px}.info-list article{border-top:1px solid var(--line);padding-top:14px}.info-list h3{margin-bottom:6px}.related{border-top:1px solid var(--line);padding:30px 0;margin-block:55px}.related h2{font-size:23px}.related-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.related-links a{border:1px solid var(--line);border-radius:10px;background:white;padding:17px;font-weight:700;text-decoration:none}.related-links a:hover{border-color:#87c7d3;background:#f5fbfd}.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:11px;background:#fff}table{width:100%;border-collapse:collapse;min-width:580px;text-align:left;font-size:15px}caption{text-align:left;padding:16px 18px;font-weight:700;color:var(--heading)}th,td{padding:13px 17px;border-bottom:1px solid var(--line);vertical-align:top}th{background:#eaf1f6;color:var(--heading);font-weight:700}tr:last-child td{border-bottom:0}.steps{counter-reset:step;display:grid;gap:14px}.steps>article{position:relative;border-left:2px solid #afd8df;padding:10px 18px 10px 54px;background:#fff}.steps>article:before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;left:13px;top:10px;color:#078997;font-weight:800;font-size:20px}.steps h3{margin:0 0 7px}.faq-list{display:grid;gap:11px}.faq-list details{border:1px solid var(--line);background:#fff;border-radius:10px;padding:15px 18px}.faq-list summary{cursor:pointer;color:var(--heading);font-weight:700}.faq-list details p{padding-top:12px;margin-bottom:0}.site-footer{background:var(--footer);color:#dcecf5;margin-top:62px;padding:46px 0 20px}.footer-grid{display:grid;grid-template-columns:2fr 1fr;gap:70px}.footer-brand{font-size:20px;color:white;text-decoration:none;font-weight:800}.site-footer p{max-width:560px}.footer-small{font-size:13px;color:#bfced9}.site-footer nav{display:grid;grid-template-columns:1fr 1fr;gap:8px 16px}.site-footer nav h2{grid-column:1/-1;font-size:17px;color:#fff}.site-footer nav a{color:#dcecf5;font-size:14px;text-decoration:none}.site-footer nav a:hover{text-decoration:underline}.footer-bottom{display:flex;justify-content:space-between;gap:12px;border-top:1px solid #365068;padding-top:18px;margin-top:31px;font-size:12px;color:#aec3ce}.back-top{position:fixed;right:22px;bottom:24px;z-index:9;width:43px;height:43px;background:var(--nav);color:#fff;border:0;border-radius:9px;box-shadow:0 4px 18px #102e4633}.back-top[hidden]{display:none!important}
/* 首页：杂志式内容布局 */
.home-hero{padding:44px 0 20px;display:grid;grid-template-columns:1.08fr 1fr;align-items:center;gap:42px}.home-hero h1{font-size:42px}.home-hero .lead{max-width:600px}.directory{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 32px;border-top:2px solid var(--nav)}.directory article{padding:20px 0;border-bottom:1px solid var(--line)}.directory article h3{margin:0 0 7px;font-size:18px}.directory article a{text-decoration:none}.directory article p{font-size:14px;margin:0}.editor-grid{display:grid;grid-template-columns:2fr 1fr;gap:18px}.editor-grid article{background:#fff;border-top:3px solid var(--teal);padding:24px}.editor-grid article:first-child{grid-row:span 2;background:var(--nav);color:#e4eff5;display:flex;flex-direction:column;justify-content:center}.editor-grid article:first-child h3{color:white;font-size:25px}.editor-grid h3{font-size:20px}.editor-grid article:first-child a{color:#8fe8ee}.rule-tiles{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}.rule-tiles article{background:white;border:1px solid var(--line);padding:22px;border-radius:12px}.rule-tiles article:nth-child(2){margin-top:26px}.rule-tiles article:nth-child(3){margin-top:52px}.route{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.route article{border-top:3px solid var(--teal);padding-top:13px}.route b{font-size:12px;color:#007b89}.route h3{font-size:17px;margin:8px 0}
/* 栏目差异化布局 */
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@media(max-width:1200px){.wrap{width:calc(100% - 44px)}.nav-inner a{font-size:14px}.feature-split{gap:28px}}@media(max-width:920px){.brand-bar{height:62px;justify-content:space-between;gap:9px}.brand{position:absolute;left:50%;transform:translateX(-50%);gap:0;max-width:45%;justify-content:center}.brand-note{display:none}.brand .media-frame img{max-height:30px}.brand-word{font-size:clamp(13px,2.6vw,20px)}.brand-word em{display:none}.register-link{margin-left:auto;font-size:13px;padding:6px 10px;min-height:39px;display:flex;align-items:center}.desktop-nav{display:none}.menu-toggle{display:flex;flex-direction:column;gap:5px;justify-content:center;align-items:center;width:40px;height:40px;flex:none;background:transparent;border:1px solid var(--line);border-radius:8px}.menu-toggle span{height:2px;width:19px;background:var(--nav)}.mobile-drawer{display:block;position:fixed;z-index:102;top:0;bottom:0;left:0;width:min(86vw,340px);background:#fff;box-shadow:10px 0 28px #001c3240;transform:translateX(-105%);transition:transform .22s ease;overflow:auto;visibility:hidden}.mobile-drawer.is-open{transform:translateX(0);visibility:visible}.drawer-top{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)}.drawer-close{border:0;background:var(--pale);border-radius:8px;width:40px;height:40px;font-size:25px;line-height:1}.mobile-drawer nav{padding:13px 18px 25px;display:grid}.drawer-label{font-size:12px;font-weight:800;color:#60798b;letter-spacing:.1em;padding:17px 12px 5px}.mobile-drawer nav a{display:block;border-radius:9px;padding:11px 12px;text-decoration:none;color:var(--heading)}.mobile-drawer nav a.active{background:#e9f8f8;border-left:4px solid var(--teal);font-weight:800}.drawer-backdrop{display:block;position:fixed;inset:0;background:#071c2ab3;z-index:101;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .22s,visibility .22s}.drawer-backdrop.is-visible{opacity:1;visibility:visible;pointer-events:auto}body.drawer-open{overflow:hidden}.mobile-quick{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 18px;margin-top:38px;font-size:13px}.mobile-quick a{color:var(--heading)}.no-js-nav{display:flex;flex-wrap:wrap;gap:7px 14px;font-size:13px;padding-block:8px}.js-ready .no-js-nav{display:none}.home-hero h1{font-size:35px}.home-hero{gap:22px}}@media(max-width:760px){.feature-split,.feature-split.reverse,.two-col,.editor-grid,.sports-columns,.football-essay,.exhibit,.exhibit:nth-child(even),.rules-layout,.about-layout{grid-template-columns:minmax(0,1fr)}.exhibit:nth-child(even) .exhibit-text{order:0}.card-grid,.esport-matrix{grid-template-columns:1fr 1fr}.route{grid-template-columns:1fr 1fr}.home-hero{grid-template-columns:1fr}.home-hero .media-frame{max-width:700px}.rules-toc{order:0}.rules-body{order:1}.about-content{order:0}.about-menu{order:1}.related-links{grid-template-columns:1fr}.footer-grid{gap:25px}.rule-tiles{grid-template-columns:1fr 1fr}.rule-tiles article:nth-child(n){margin-top:0}.sports-flow{grid-template-columns:1fr}.section{margin-block:43px}}@media(max-width:640px){body{font-size:15px;line-height:1.78}.wrap{width:calc(100% - 32px)}h1{font-size:27px}h2{font-size:22px}h3{font-size:18px}.home-hero{padding-top:27px}.home-hero h1{font-size:30px}.lead{font-size:15px}.page-intro{padding:28px 0}.section{margin-block:34px}.panel,.soft-panel,.dark-panel{padding:18px}.directory,.card-grid,.esport-matrix,.rule-tiles{grid-template-columns:1fr}.editor-grid article:first-child{grid-row:auto}.rule-tiles article:nth-child(n){margin-top:0}.route{gap:17px}.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}.media-frame--logo{--media-limit:30px}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.site-footer{margin-top:43px}.page-intro .lead{font-size:15px}}@media(max-width:380px){.brand{max-width:41%}.brand-word{font-size:13px}.register-link{padding:5px 7px;font-size:12px}.route{grid-template-columns:1fr}.site-footer nav{grid-template-columns:1fr 1fr}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}