/* 开云体育：阅读优先、无外部依赖 */
:root{--page:#F6F8F8;--white:#fff;--surface:#EAF0F2;--navy:#122E3B;--panel:#1A4050;--teal:#168E96;--link:#226D9D;--heading:#193946;--text:#374D58;--sub:#647981;--line:#D9E3E6;--footer:#0C2632}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--page);font-family:Arial,'PingFang SC','Microsoft YaHei',sans-serif;color:var(--text);font-size:16px;line-height:1.8}a{color:var(--link);text-underline-offset:4px}a:hover{text-decoration-color:var(--teal)}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #48C9CD;outline-offset:3px}img{max-width:100%;height:auto}h1,h2,h3{color:var(--heading);line-height:1.35;letter-spacing:.01em}h1{font-size:clamp(34px,3.2vw,42px);margin:0 0 20px}h2{font-size:clamp(24px,2.4vw,28px);margin:0 0 19px}h3{font-size:20px;margin:20px 0 10px}p{margin:0 0 17px}main{max-width:1220px;padding:0 28px;margin:0 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@media(max-width:1150px){.header-inner{gap:10px}.brand-sub{display:none}.desktop-nav{gap:9px}.desktop-nav a{font-size:12px}.register-link{padding:6px 9px}}
@media(max-width:980px){.header-inner{min-height:64px;justify-content:space-between;gap:12px}.mobile-menu{display:block;order:0;flex:1}.brand{order:1;justify-content:center;flex:1}.brand-icon img{max-height:30px}.desktop-nav{display:none}.register-link{order:2;flex:1;max-width:max-content}.mobile-menu details summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid #73919D;border-radius:7px;font-size:24px;color:white}.mobile-menu details summary::-webkit-details-marker{display:none}.mobile-panel{position:absolute;top:100%;left:0;right:0;padding:15px max(22px,calc((100vw - 900px)/2));background:#173746;box-shadow:0 12px 20px #0C263230;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px 23px}.mobile-panel-head{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center}.menu-close{background:none;border:1px solid #8BB9C1;color:white;border-radius:6px;padding:5px 11px;cursor:pointer}.nav-group-title{grid-column:1/-1;font-size:13px;color:#92D9DC;font-weight:700;margin:10px 0 0}.mobile-panel a{color:#FFF;text-decoration:none;padding:4px 0;min-height:40px;display:flex;align-items:center}.brand-fallback{font-size:18px}}
@media(max-width:760px){main{padding:0 22px}.grid-two,.grid-three,.story-row,.story-row--reverse,.article-shell{grid-template-columns:1fr}.side-index{position:static;display:flex;flex-direction:row;flex-wrap:wrap}.text-columns{columns:1}.topic-groups{grid-template-columns:1fr}.topic-pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}.numbered-path{grid-template-columns:repeat(2,minmax(0,1fr))}.link-lines{grid-template-columns:1fr}.hero-grid{grid-template-columns:1fr;gap:24px}.footer-inner,.breadcrumb{padding-inline:22px}}
@media(max-width:640px){body{font-size:15px;line-height:1.78}main{padding-inline:16px}main>section,main>article,main>aside{margin-block:36px}h1{font-size:clamp(26px,7.4vw,30px)}h2{font-size:clamp(20px,5.8vw,23px)}h3{font-size:18px}.lead{font-size:16px}.header-inner{padding-inline:16px}.breadcrumb{padding-inline:16px}.mobile-panel{grid-template-columns:1fr 1fr;padding:15px 16px;gap:3px 12px}.mobile-panel-head,.nav-group-title{grid-column:1/-1}.hero-grid{padding-top:27px}.topic-pair{grid-template-columns:1fr}.read-slab,.note-slab,.dark-slab{padding:18px}.image-holder--hero{--image-limit:195px}.image-holder--feature{--image-limit:180px}.image-holder--inline{--image-limit:140px}.image-holder--rules{--image-limit:165px}.image-holder--banner{--image-limit:125px}.image-holder--portrait{--image-limit:275px;max-width:240px}.image-holder--logo{--image-limit:30px}.footer-inner{padding:35px 16px 24px}.numbered-path{grid-template-columns:1fr 1fr}.article-content h2{padding-top:0}}
@media(max-width:390px){.brand-fallback{font-size:16px}.register-link{font-size:12px;padding:5px 7px}.header-inner{gap:4px}.mobile-menu details summary{width:40px;height:40px}.numbered-path{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}