/* B体育 · 本地独立响应式样式 */
:root{color-scheme:dark;--bg:#111318;--nav:#151820;--panel:#1A1E27;--panel2:#222733;--fg:#F7F8FA;--copy:#D5D8DF;--muted:#AEB4C0;--line:rgba(255,255,255,.09);--primary:#F45132;--hover:#FF684E;--gold:#D7A84B}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--copy);font:16px/1.75 system-ui,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none;touch-action:manipulation;overflow-wrap:anywhere}button{font:inherit;cursor:pointer;touch-action:manipulation}a:hover{color:var(--hover)}a:focus-visible,button:focus-visible{outline:2px solid var(--gold);outline-offset:3px}p{margin:0 0 1.1em}h1,h2,h3{color:var(--fg);line-height:1.35;margin:0 0 .65em;letter-spacing:-.015em}h1{font-size:clamp(28px,3.35vw,42px)}h2{font-size:clamp(22px,2.2vw,28px)}h3{font-size:19px}img{max-width:100%}.container{width:min(1200px,calc(100% - 40px));margin-inline:auto;min-width:0}.skip-link{position:absolute;z-index:13000;left:8px;top:-100px;background:var(--primary);padding:8px 20px}.skip-link:focus{top:8px}
.site-header{background:var(--nav);border-bottom:1px solid var(--line);position:relative;z-index:20}.header-primary{display:flex;align-items:center;gap:20px;min-height:76px}.brand-link{display:flex;align-items:center;gap:9px;white-space:nowrap;flex:none;color:var(--fg)}.brand-link .media--logo{width:44px;height:44px}.brand-link strong{font-size:22px;line-height:1.12;display:block}.brand-link small{display:block;color:var(--gold);font-size:10px;letter-spacing:1.25px}.desktop-primary{display:flex;align-items:center;justify-content:center;flex:1;gap:clamp(9px,1.5vw,25px);min-width:0}.desktop-primary a,.header-secondary a{white-space:nowrap;display:inline-flex;align-items:center;min-height:44px;font-size:14px;border-bottom:2px solid transparent}.desktop-primary a.is-current,.header-secondary a.is-current{color:var(--fg);border-color:var(--primary)}.register-action{background:var(--primary);color:#fff;font-weight:700;display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:76px;border-radius:9px;flex:none}.register-action:hover{background:var(--hover);color:#fff}.header-secondary{min-height:42px;display:flex;align-items:center;justify-content:center;gap:36px;border-top:1px solid var(--line)}.header-secondary a{min-height:42px;color:var(--muted)}.menu-trigger{display:none;border:0;background:transparent;color:var(--fg);width:44px;height:44px;padding:11px;flex:none}.menu-trigger span{display:block;height:2px;background:currentColor;margin:5px 0}.mobile-drawer,.drawer-mask{display:none}.mobile-bottom{display:none}
main{min-height:65vh}.section{padding:50px 0}.eyebrow{text-transform:uppercase;letter-spacing:1.4px;color:var(--gold);font-size:12px;font-weight:700;margin-bottom:10px}.lead{font-size:18px;color:var(--copy);max-width:870px}.muted{color:var(--muted)}.link-more{display:inline-flex;align-items:center;min-height:42px;color:var(--hover);font-weight:650}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px}.section-heading p{max-width:640px;color:var(--muted);margin:0}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:12px;background:#12151c;aspect-ratio:16/9}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media--portrait{aspect-ratio:4/5}.media--app{aspect-ratio:3/4;max-width:360px;margin-inline:auto}.media--logo{aspect-ratio:auto;overflow:visible}.media--logo img{position:static;width:100%;height:100%;object-fit:contain}.media-placeholder{position:absolute;inset:0;display:block;background:linear-gradient(135deg,#232833,#171a22)}
.hero-carousel{margin:24px 0 30px}.carousel-viewport{position:relative;background:#11151d;border-radius:16px;overflow:hidden}.carousel-slide{height:clamp(220px,24vw,300px)}.carousel-slide[hidden]{display:none}.carousel-slide .media{border-radius:0;height:100%;aspect-ratio:auto}.carousel-slide .media>img{loading:eager}.carousel-controls{display:flex;justify-content:center;align-items:center;gap:16px;margin-top:12px}.carousel-controls button{border:1px solid var(--line);color:var(--fg);background:var(--panel);border-radius:8px;min-width:44px;min-height:40px}.carousel-dots{display:flex;align-items:center;gap:8px}.carousel-dots button{min-width:30px;min-height:40px;position:relative;background:transparent;border:0}.carousel-dots button:after{content:"";display:block;width:9px;height:9px;border-radius:50%;background:#747b88;margin:auto}.carousel-dots button.is-current:after{background:var(--primary);width:18px;border-radius:9px}.home-heading{margin-bottom:35px}.home-heading p{max-width:850px}.channel-grid{display:grid;grid-template-columns:1.15fr 1fr 1fr;gap:15px}.channel-tile{min-width:0;background:var(--panel);border:1px solid var(--line);padding:26px;border-radius:15px}.channel-tile:first-child{border-top:3px solid var(--primary)}.channel-tile:nth-child(2){border-top:3px solid var(--gold)}.channel-tile:nth-child(3){border-top:3px solid #8998b7}.channel-tile span{color:var(--gold);font-size:12px}.channel-tile h3{margin:7px 0 12px}.channel-tile p{font-size:15px}.feature-split{display:grid;grid-template-columns:1.15fr 1fr;align-items:center;gap:32px}.feature-copy{min-width:0}.feature-copy ul,.read-list{padding:0;margin:0;list-style:none}.feature-copy li,.read-list li{border-bottom:1px solid var(--line);padding:10px 0}.feature-copy li a,.read-list li a{display:inline-flex;min-height:40px;align-items:center}.gallery-four{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.gallery-figure{margin:0;min-width:0}.gallery-figure .media{margin-bottom:12px}.gallery-figure h3{font-size:17px;margin-bottom:8px}.gallery-figure p{font-size:14px;color:var(--muted)}.split-articles{display:grid;grid-template-columns:1fr 1fr;gap:22px}.panel{padding:25px;background:var(--panel);border-radius:13px;border:1px solid var(--line);min-width:0}.panel p{color:var(--copy)}.panel strong{color:var(--fg)}.index-pills{display:flex;gap:10px;flex-wrap:wrap}.index-pills a,.related-links a{display:inline-flex;min-height:44px;padding:9px 15px;border:1px solid var(--line);border-radius:9px;background:var(--panel2);align-items:center}.three-index{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.three-index>div{border-top:2px solid var(--primary);padding-top:20px}.three-index h3{font-size:19px}.three-index a{color:var(--hover);font-weight:650}.qa-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.qa-list article{background:var(--panel);border-radius:12px;padding:23px}.qa-list h3{font-size:18px}.qa-list p{font-size:15px}.closing{border-top:1px solid var(--line);padding:38px 0 60px}.closing strong{color:var(--gold)}
.page-intro{padding:48px 0 30px;border-bottom:1px solid var(--line)}.page-intro h1{margin-bottom:15px}.page-frame{padding:34px 0 65px}.page-frame.has-aside{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:48px;align-items:start}.article-content{min-width:0;max-width:900px}.article-section{padding:26px 0 30px;border-bottom:1px solid var(--line);scroll-margin-top:25px}.article-section:first-child{padding-top:8px}.article-section p{font-size:16px}.article-section .media{max-width:700px;margin:26px auto 8px}.feature-media{margin:5px 0 22px;max-width:790px}.feature-media>.media--portrait{max-width:480px}.feature-media>.media--app{max-width:360px}.page-aside{position:sticky;top:22px;border:1px solid var(--line);background:var(--panel);border-radius:12px;padding:20px;min-width:0}.page-aside h2{font-size:19px}.page-aside>a{display:flex;align-items:center;min-height:44px;border-bottom:1px solid var(--line);font-size:14px}.aside-note{color:var(--muted);font-size:13px;margin-top:18px}.related{margin-top:34px}.related h2{font-size:22px}.related-links{display:flex;flex-wrap:wrap;gap:10px}.chapter-label{color:var(--gold)}.site-footer{background:var(--nav);border-top:1px solid var(--line);padding-top:45px}.footer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:38px;padding-bottom:35px}.footer-grid h2{font-size:18px}.footer-grid a{display:block;width:fit-content;padding:4px 0;font-size:14px;color:var(--muted)}.footer-grid a:hover{color:var(--hover)}.footer-identity{display:flex;align-items:center;gap:10px;margin-bottom:22px;color:var(--fg)}.footer-identity .media{width:37px;height:37px}.footer-identity span{color:var(--gold);font-size:11px}.footer-base{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:18px;padding:20px 0;font-size:13px;color:var(--muted)}.footer-base p{margin:0}
.venue-tabs{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.venue-tabs a{background:var(--panel2);border:1px solid var(--line);padding:8px 18px;border-radius:8px}.venue-section{padding:30px 0;border-top:1px solid var(--line);scroll-margin-top:30px}.venue-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.venue-item{min-width:0}.venue-item .media{margin-bottom:12px}.venue-item p{font-size:14px;color:var(--muted)}.venue-item h3{font-size:17px}.reading-table{width:100%;border-collapse:collapse;background:var(--panel)}.reading-table td,.reading-table th{border:1px solid var(--line);padding:12px;text-align:left}.reading-table th{color:var(--fg)}
@media(max-width:1024px){.container{width:calc(100% - 48px)}.desktop-primary,.header-secondary{display:none}.header-primary{min-height:66px;display:grid;grid-template-columns:44px minmax(0,1fr) 70px;gap:8px}.menu-trigger{display:block}.brand-link{justify-content:center;gap:6px;min-width:0}.brand-link .media--logo{width:38px;height:38px;flex:none}.brand-link strong{font-size:20px}.register-action{min-width:66px;padding:0 8px}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);max-width:100%;height:100dvh;overflow-y:auto;background:#151820;color:#F7F8FA;z-index:12000;transform:translateX(-105%);transition:transform .2s ease}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:11000;opacity:0;pointer-events:none}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}.drawer-heading{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;border-bottom:1px solid var(--line);font-weight:700}.drawer-close{width:44px;height:44px;border:1px solid var(--line);background:var(--panel2);color:var(--fg);border-radius:8px;font-size:26px;line-height:1}.drawer-group{padding:18px 20px 10px}.drawer-group h2{font-size:13px;color:var(--gold);letter-spacing:1px}.drawer-group a{display:flex;align-items:center;min-height:44px;border-bottom:1px solid var(--line)}.drawer-active{overflow:hidden}.page-frame.has-aside{grid-template-columns:minmax(0,1fr)}.page-aside{position:static}.channel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.channel-tile:first-child{grid-column:span 2}.gallery-four{grid-template-columns:repeat(2,minmax(0,1fr))}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;padding-bottom:env(safe-area-inset-bottom);background:#191d26;border-top:1px solid var(--line);z-index:100}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:54px;font-size:14px}.mobile-bottom a:last-child{color:#fff;background:var(--primary);font-weight:700}body{padding-bottom:calc(54px + env(safe-area-inset-bottom))}}
@media(max-width:700px){.container{width:calc(100% - 32px)}body{font-size:15px;line-height:1.73}.brand-link strong{font-size:18px}.brand-link small{font-size:9px}.brand-link .media--logo{width:33px;height:33px}.section{padding:37px 0}.page-intro{padding:31px 0 20px}.page-frame{padding-top:21px}.lead{font-size:16px}.article-section p{font-size:15.5px}.hero-carousel{margin:15px 0 23px}.carousel-slide{height:clamp(140px,40vw,180px)}.section-heading{display:block}.channel-grid,.feature-split,.split-articles,.three-index,.qa-list{grid-template-columns:minmax(0,1fr)}.channel-tile:first-child{grid-column:auto}.feature-split{gap:20px}.gallery-four{gap:16px}.gallery-figure p{font-size:13px}.venue-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.venue-item .media--portrait{max-height:260px}.footer-grid{grid-template-columns:1fr;gap:20px}.footer-base{display:block}.footer-base p{margin-bottom:5px}.panel{padding:19px}.reading-table{font-size:13px}.reading-table td,.reading-table th{padding:8px}}
@media(max-width:360px){.brand-link strong{font-size:17px}.brand-link small{font-size:8px}.brand-link .media--logo{width:30px;height:30px}.header-primary{gap:5px;grid-template-columns:44px minmax(0,1fr) 63px}.register-action{min-width:63px}.venue-grid{grid-template-columns:1fr}.gallery-four{grid-template-columns:1fr 1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}