*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#F5F9FE;color:#243447;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.75}
body.panel-open{overflow:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;width:100%;height:auto;object-fit:contain}
button{font:inherit}
main{min-height:70vh}
.container{width:min(1200px,calc(100% - 36px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:9999;background:rgba(245,249,254,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(47,123,255,.12)}
.header-inner{height:72px;width:min(1240px,calc(100% - 28px));margin:0 auto;display:grid;grid-template-columns:190px 1fr auto;align-items:center;gap:18px}
.logo-link{width:156px;display:flex;align-items:center}
.site-logo{height:42px;width:auto}
.desktop-nav{justify-self:center;display:flex;gap:4px;padding:5px;background:#fff;border:1px solid rgba(47,123,255,.12);border-radius:999px;white-space:nowrap;box-shadow:0 8px 24px rgba(22,50,79,.05)}
.desktop-nav a{padding:8px 15px;border-radius:999px;color:#16324F;font-size:14px;font-weight:700}
.desktop-nav a:hover,.desktop-nav a.active{background:#E8F2FC;color:#2F7BFF}
.header-actions{display:flex;gap:8px;align-items:center;white-space:nowrap}
.overview-btn{border:0;background:transparent;color:#16324F;font-weight:700;padding:8px 10px;cursor:pointer}
.login-btn,.register-btn,.main-btn{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 18px;border-radius:999px;font-weight:800;transition:.2s ease}
.login-btn,.main-btn{background:#2F7BFF;color:#fff;border:1px solid #2F7BFF}
.login-btn:hover,.main-btn:hover{background:#1E5FD6;border-color:#1E5FD6}
.register-btn{background:#fff;color:#16324F;border:1px solid #C5D7F0}
.register-btn:hover{border-color:#2F7BFF;color:#2F7BFF}
.mobile-menu-btn,.mobile-login{display:none}
.hero{padding:58px 0 34px;position:relative;overflow:hidden}
.hero:before,.hero:after{content:"";position:absolute;border-radius:50%;filter:blur(8px);pointer-events:none}
.hero:before{width:360px;height:360px;background:rgba(47,123,255,.08);right:-140px;top:-130px}
.hero:after{width:240px;height:240px;background:rgba(47,123,255,.06);left:-120px;bottom:-80px}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:38px;align-items:center;position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#2F7BFF;font-size:14px;font-weight:800;background:#E8F2FC;padding:7px 12px;border-radius:999px;margin-bottom:15px}
h1,h2,h3{color:#16324F;line-height:1.3;margin-top:0}
h1{font-size:clamp(34px,4vw,52px);margin-bottom:18px;letter-spacing:-.02em}
h2{font-size:clamp(25px,3vw,34px);margin-bottom:12px}
h3{font-size:19px;margin-bottom:9px}
.hero-copy p{font-size:17px;color:#5B6B7C;margin:0 0 22px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-image-card,.card,.content-card,.section-panel{background:#fff;border:1px solid rgba(47,123,255,.16);box-shadow:0 12px 32px rgba(22,50,79,.08);border-radius:16px}
.hero-image-card{padding:16px}
.hero-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:28px}
.hero-summary a{background:#fff;border:1px solid rgba(47,123,255,.14);border-radius:14px;padding:14px 15px}
.hero-summary strong{display:block;color:#16324F;font-size:14px}
.hero-summary span{display:block;color:#7A8896;font-size:12px;margin-top:3px}
.section{padding:54px 0}
.section.alt{background:#fff}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}
.section-head p{margin:0;color:#5B6B7C;max-width:650px}
.text-link{color:#2F7BFF;font-weight:800}
.quick-scroll{display:flex;gap:12px;overflow-x:auto;padding:3px 1px 12px;scrollbar-width:thin}
.quick-item{min-width:210px;max-width:220px;background:#fff;border:1px solid rgba(47,123,255,.14);border-radius:15px;padding:16px}
.quick-item b{display:inline-flex;width:28px;height:28px;align-items:center;justify-content:center;background:#E8F2FC;color:#2F7BFF;border-radius:50%;font-size:12px;margin-bottom:11px}
.quick-item strong{display:block;color:#16324F;margin-bottom:4px}
.quick-item span{display:block;color:#5B6B7C;font-size:13px;line-height:1.6}
.intro-strip{display:grid;grid-template-columns:1fr 1fr;gap:0;overflow:hidden}
.intro-strip .copy{padding:30px}
.intro-strip .image-wrap{padding:14px;background:#F3F8FF;display:flex;align-items:center}
.dual-grid,.info-grid,.feedback-grid,.qa-grid{display:grid;gap:18px}
.dual-grid{grid-template-columns:1fr 1fr}
.info-grid{grid-template-columns:repeat(3,1fr)}
.feedback-grid{grid-template-columns:repeat(3,1fr)}
.qa-grid{grid-template-columns:repeat(2,1fr)}
.card{padding:22px}
.card p,.content-card p{color:#5B6B7C;margin:0 0 12px}
.card p:last-child,.content-card p:last-child{margin-bottom:0}
.card .meta{font-size:13px;color:#7A8896}
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.topic-card{overflow:hidden;background:#fff;border:1px solid rgba(47,123,255,.14);border-radius:16px;box-shadow:0 10px 28px rgba(22,50,79,.06)}
.topic-card .img-box{height:168px;padding:12px;background:#F3F8FF;display:flex;align-items:center}
.topic-card .img-box img{max-height:100%;object-fit:contain}
.topic-card .body{padding:16px}
.topic-card p{font-size:13px;color:#5B6B7C;margin:6px 0 10px}
.banner-card{display:grid;grid-template-columns:1fr .85fr;gap:26px;align-items:center;padding:24px}
.banner-card .banner-image{background:#F3F8FF;border-radius:14px;padding:10px}
.static-media{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.static-media .media-card{overflow:hidden}
.media-card .media-img{padding:10px;background:#F3F8FF}
.media-card .media-body{padding:18px 20px 20px}
.notice{background:#E8F2FC;border:1px solid rgba(47,123,255,.18);border-radius:16px;padding:20px;color:#16324F}
.page-hero{padding:46px 0 26px}
.page-hero-grid{display:grid;grid-template-columns:1fr 420px;gap:34px;align-items:center}
.page-hero .hero-image-card{max-width:420px;justify-self:end}
.breadcrumbs{font-size:13px;color:#7A8896;margin-bottom:12px}
.breadcrumbs a{color:#2F7BFF}
.page-summary{font-size:17px;color:#5B6B7C;margin-bottom:20px}
.content-stack{display:grid;gap:18px}
.content-card{padding:26px}
.content-card ul,.content-card ol{padding-left:20px;color:#5B6B7C;margin-bottom:0}
.content-card li{margin:7px 0}
.content-card h2{font-size:24px}
.review-card{position:relative}
.review-card:before{content:"“";position:absolute;right:16px;top:4px;font-size:60px;line-height:1;color:#E8F2FC;font-family:Georgia,serif}
.review-card strong{display:block;color:#16324F;margin-bottom:7px}
.qa-item{background:#fff;border:1px solid rgba(47,123,255,.14);border-radius:15px;padding:20px}
.qa-item h3{font-size:17px;margin-bottom:8px}
.qa-item p{margin:0;color:#5B6B7C;font-size:14px}
.compliance-box{border-left:4px solid #2F7BFF;background:#fff;padding:20px 22px;border-radius:0 14px 14px 0;box-shadow:0 10px 24px rgba(22,50,79,.05)}
.compliance-box strong{color:#16324F}
.site-footer{background:#10243A;color:#D7E6F5;padding:46px 0 30px}
.footer-inner{width:min(1200px,calc(100% - 36px));margin:0 auto}
.footer-brand{display:flex;gap:18px;align-items:center;border-bottom:1px solid rgba(215,230,245,.16);padding-bottom:22px}
.footer-brand img{width:148px;height:auto;filter:brightness(1.08)}
.footer-brand strong{font-size:21px;color:#fff}
.footer-brand p{margin:3px 0 0;max-width:640px;color:#B8CBE0}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;padding:18px 0}
.footer-links a{color:#D7E6F5}
.footer-links a:hover{color:#fff}
.footer-note{font-size:13px;color:#9FB6CE}
.footer-note p{margin:4px 0}
.drawer-overlay{position:fixed;inset:0;background:rgba(16,36,58,.34);opacity:0;visibility:hidden;z-index:10000;transition:.2s}
.drawer-overlay.show{opacity:1;visibility:visible}
.mobile-drawer,.overview-panel{position:fixed;top:0;bottom:0;background:#fff;z-index:10001;box-shadow:0 0 40px rgba(16,36,58,.18);transition:transform .25s ease}
.mobile-drawer{left:0;width:min(86vw,360px);transform:translateX(-105%)}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head,.overview-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid rgba(47,123,255,.12)}
.drawer-head img{width:148px;height:auto}
.close-btn{width:38px;height:38px;border-radius:50%;border:1px solid #C5D7F0;background:#fff;color:#16324F;font-size:25px;line-height:1;cursor:pointer}
.drawer-scroll{height:calc(100% - 72px);overflow-y:auto;padding:10px 14px 24px}
.drawer-scroll a{display:block;padding:11px 12px;border-bottom:1px solid rgba(47,123,255,.08);color:#16324F}
.overview-panel{right:0;width:min(92vw,760px);transform:translateX(105%)}
.overview-panel.open{transform:translateX(0)}
.overview-head>div{display:flex;flex-direction:column}
.overview-head span{font-size:13px;color:#7A8896}
.overview-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:20px;overflow-y:auto;height:calc(100% - 76px)}
.overview-grid section{background:#F5F9FE;border-radius:14px;padding:16px}
.overview-grid h3{font-size:16px}
.overview-grid a{display:block;color:#5B6B7C;padding:4px 0}
.overview-grid a:hover{color:#2F7BFF}
.mobile-bottom-nav{display:none}
@media(max-width:1060px){
 .header-inner{grid-template-columns:160px 1fr auto;gap:10px}
 .desktop-nav a{padding:8px 10px;font-size:13px}
 .overview-btn{padding:7px 6px}
 .page-hero-grid{grid-template-columns:1fr 360px}
 .topic-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:860px){
 .header-inner{height:68px;grid-template-columns:48px 1fr 72px}
 .desktop-nav,.header-actions,.logo-link{display:none}
 .mobile-menu-btn{display:flex;flex-direction:column;justify-content:center;gap:4px;width:42px;height:42px;border:1px solid #C5D7F0;background:#fff;border-radius:12px;padding:0 11px}
 .mobile-menu-btn span{display:block;height:2px;background:#16324F;border-radius:2px}
 .site-header:after{content:"";background:url("球速体育-logo.webp") center/contain no-repeat;width:142px;height:40px;justify-self:center;grid-column:2;grid-row:1}
 .mobile-login{display:inline-flex;justify-self:end;grid-column:3;grid-row:1;padding:0 15px;min-height:38px}
 .hero{padding-top:34px}
 .hero-grid,.page-hero-grid,.banner-card,.intro-strip{grid-template-columns:1fr}
 .hero-image-card,.page-hero .hero-image-card{max-width:none;justify-self:stretch}
 .hero-summary{grid-template-columns:repeat(2,1fr)}
 .info-grid{grid-template-columns:repeat(2,1fr)}
 .feedback-grid{grid-template-columns:1fr 1fr}
 .topic-grid{grid-template-columns:repeat(2,1fr)}
 .mobile-bottom-nav{position:fixed;left:10px;right:10px;bottom:10px;z-index:9998;display:grid;grid-template-columns:repeat(4,1fr);background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border:1px solid rgba(47,123,255,.15);box-shadow:0 10px 28px rgba(22,50,79,.16);border-radius:16px;padding:6px}
 .mobile-bottom-nav a{padding:8px;text-align:center;color:#16324F;font-size:13px;font-weight:700;border-radius:10px}
 .mobile-bottom-nav a:hover{background:#E8F2FC;color:#2F7BFF}
 body{padding-bottom:84px}
}
@media(max-width:620px){
 .container,.footer-inner{width:min(100% - 24px,1200px)}
 .hero-grid{gap:20px}
 h1{font-size:32px}
 .hero-copy p,.page-summary{font-size:15px}
 .section{padding:42px 0}
 .section-head{align-items:flex-start;flex-direction:column}
 .dual-grid,.qa-grid,.static-media,.feedback-grid,.info-grid{grid-template-columns:1fr}
 .topic-grid{gap:12px}
 .topic-card .img-box{height:128px;padding:8px}
 .topic-card .body{padding:13px}
 .topic-card h3{font-size:16px}
 .overview-grid{grid-template-columns:1fr}
 .page-hero{padding-top:30px}
 .content-card{padding:20px}
 .banner-card{padding:18px}
 .hero-summary a{padding:12px}
}