/* 开云体育：不依赖外部资源的响应式主题 */
:root{--page:#F5FBFF;--white:#FFFFFF;--surface:#EAF7FC;--light:#DFF5FB;--cyan:#25C8D1;--sky:#25B6E8;--blue:#1787DB;--deep:#174B78;--title:#173B60;--body:#2D4359;--muted:#687F93;--line:#DCEBF3;--footer:#123653;--shadow:0 12px 40px rgba(20,80,115,.075)}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--page);color:var(--body);font-family:Arial,'PingFang SC','Microsoft YaHei',sans-serif;font-size:16px;line-height:1.82;-webkit-font-smoothing:antialiased}body.drawer-open{overflow:hidden}a{color:var(--deep);text-decoration:none}a:hover{color:var(--blue)}a:focus-visible,button:focus-visible{outline:3px solid var(--sky);outline-offset:3px}button{font:inherit;cursor:pointer}img{max-width:100%;height:auto}h1,h2,h3{line-height:1.38;color:var(--title);margin-top:0;letter-spacing:-.02em}h1{font-size:clamp(30px,3vw,38px)}h2{font-size:clamp(21px,2.2vw,26px)}h3{font-size:19px}p{margin:0 0 1em}ul,ol{padding-left:1.5em}li{margin:.3em 0}strong{color:var(--title)}.container{width:min(1160px,calc(100% - 48px));margin-inline:auto}.skip-link{position:absolute;left:15px;top:-70px;padding:8px 14px;background:#fff;z-index:70}.skip-link:focus{top:10px}.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30;box-shadow:0 3px 18px rgba(11,51,88,.035)}.header-inner{height:72px;display:flex;align-items:center;gap:22px}.brand,.drawer-brand,.footer-brand{display:inline-flex;align-items:center;justify-content:center;min-width:124px;white-space:nowrap}.brand-image{display:block;width:auto;height:auto;max-height:37px;max-width:154px;object-fit:contain}.brand-fallback{font-size:23px;font-weight:900;color:var(--deep);letter-spacing:.03em;line-height:1.2}.brand-fallback span{color:var(--cyan)}.desktop-nav{display:flex;gap:3px;align-items:center;flex:1;justify-content:center;white-space:nowrap}.nav-link{padding:12px 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0}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:22px}.section-head p{color:var(--muted);max-width:630px;margin:0}.section-head h2{margin:0 0 8px}.text-link{font-weight:700;color:var(--blue);white-space:nowrap}.section-tint{background:linear-gradient(125deg,#F0FAFE,#EAF7FC);border-top:1px solid #E3F1F7;border-bottom:1px solid #E3F1F7}.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.topic-card,.content-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow)}.topic-card .num{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;background:#DFF5FB;color:var(--blue);font-weight:900;margin-bottom:14px;font-size:13px}.topic-card h3{margin:0 0 8px}.topic-card p{font-size:15px;color:var(--muted);margin-bottom:16px}.topic-card a{font-weight:800;color:var(--blue)}.editorial-grid{display:grid;grid-template-columns:1.25fr 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a{font-size:13px;font-weight:700;padding:7px 14px;border:1px solid var(--line);border-radius:999px;background:#fff}.page-layout{display:grid;grid-template-columns:minmax(0,1fr) 245px;gap:46px;align-items:start;padding:30px 0 55px}.article-body{max-width:820px;min-width:0}.article-body>section{padding:0 0 28px;margin-bottom:32px;border-bottom:1px solid var(--line)}.article-body h2{margin:0 0 18px}.article-body h3{margin:23px 0 9px}.article-body p{margin:0 0 15px}.side-index{position:sticky;top:105px;background:#fff;border:1px solid var(--line);padding:20px;border-radius:15px}.side-index h2{font-size:16px;margin:0 0 12px}.side-index a{display:block;padding:7px 0;font-size:14px;border-bottom:1px solid var(--line)}.side-index a:last-child{border-bottom:0}.comparison{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:16px 0}.compare-item{padding:22px;background:#fff;border:1px solid var(--line);border-radius:15px}.compare-item 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td{border:0}.gallery-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.gallery-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}.gallery-card .media{border:0;border-radius:0}.gallery-card-content{padding:20px}.gallery-card h3{margin:0 0 8px}.gallery-card p{font-size:15px;color:var(--muted)}.glossary{display:grid;gap:13px}.glossary>div{padding:16px 20px;border:1px solid var(--line);border-radius:12px;background:#fff}.glossary dt{font-weight:800;color:var(--title)}.glossary dd{margin:4px 0 0}.faq{display:grid;gap:12px}.faq details{padding:16px 20px;background:#fff;border:1px solid var(--line);border-radius:12px}.faq summary{font-weight:800;color:var(--title);cursor:pointer}.faq details p{margin:10px 0 0;color:var(--body)}.callout{padding:22px 26px;border:1px solid #B9E7F0;background:var(--surface);border-radius:15px;margin:25px 0}.related{margin-top:12px}.related h2{font-size:21px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.related-link{padding:15px;background:#fff;border:1px solid var(--line);border-radius:10px;font-size:14px;font-weight:700;display:flex;gap:8px;justify-content:space-between}.site-footer{background:var(--footer);color:#EAF7FF;margin-top:35px}.footer-main{padding:43px 0;display:grid;grid-template-columns:2.2fr 1fr 1fr;gap:50px}.footer-intro p{max-width:520px;color:#C3DFED;font-size:14px;margin:13px 0}.footer-brand{justify-content:start}.footer-brand .brand-fallback{color:#fff}.footer-brand .brand-image{max-height:42px}.footer-main h2{font-size:16px;color:#fff;margin:6px 0 17px}.footer-main a:not(.footer-brand){display:block;color:#D2EAF7;font-size:14px;margin:7px 0}.footer-bottom{display:flex;justify-content:space-between;gap:18px;border-top:1px solid rgba(255,255,255,.13);padding:17px 0 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@media(max-width:1100px){.desktop-nav .nav-link{padding-inline:7px;font-size:13px}.header-inner{gap:13px}}
@media(max-width:979px){.header-inner{height:60px;justify-content:space-between;gap:8px}.menu-toggle{display:flex}.desktop-nav{display:none}.brand{position:absolute;left:50%;transform:translateX(-50%);min-width:auto;max-width:calc(100% - 230px)}.brand-image{max-height:30px;max-width:125px}.brand-fallback{font-size:20px}.header-cta{height:38px;padding:0 13px;font-size:12px;margin-left:auto}.hero{padding-top:36px}.hero-grid{gap:25px}.page-layout{grid-template-columns:1fr;gap:0}.side-index{position:static;order:-1;margin-bottom:24px}.side-index a{display:inline-block;border-bottom:0;margin-right:14px}.side-index h2{margin-bottom:4px}.footer-main{gap:25px}}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}}