/* B体育 响应式品牌官网样式 */
:root{
    --brand: rgb(213, 5, 5);
    --brand-dark: rgb(178, 0, 0);
    --text: #171717;
    --text-soft: #555;
    --muted: #f5f5f5;
    --line: #e8e8e8;
    --panel: #ffffff;
    --dark: #222;
    --radius: 18px;
    --shadow: 0 10px 30px rgba(0,0,0,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;background:#fff;color:var(--text);line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{width:min(1120px,92vw);margin:0 auto}
.section{padding:56px 0}
.section-light{background:var(--muted)}
.section-title{margin:0 0 10px;font-size:28px;line-height:1.25;color:#111}
.section-desc{margin:0 0 26px;color:var(--text-soft);max-width:780px}
.site-header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}
.mobile-header{height:58px;display:grid;grid-template-columns:64px 1fr 82px;align-items:center;padding:0 12px;background:#fff}
.menu-button{width:42px;height:42px;border:0;background:#fff;border-radius:12px;display:flex;flex-direction:column;gap:5px;justify-content:center;align-items:center;cursor:pointer}
.menu-button span{width:22px;height:2px;background:#222;border-radius:2px}
.mobile-logo{justify-self:center;display:flex;align-items:center;justify-content:center}
.mobile-logo img{max-height:34px;width:auto}
.top-action{background:var(--brand);color:#fff;font-weight:700;border-radius:999px;padding:8px 16px;text-align:center;box-shadow:0 8px 18px rgba(213,5,5,.2);white-space:nowrap}
.top-action:hover,.main-btn:hover{background:var(--brand-dark)}
.mobile-nav{display:none;background:#fff;border-top:1px solid var(--line);padding:8px 16px 16px;box-shadow:0 12px 22px rgba(0,0,0,.06)}
.mobile-nav.open{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.mobile-nav a{padding:10px 12px;border-radius:12px;background:#fafafa;color:#333;font-size:14px}
.mobile-nav a.active{color:var(--brand);font-weight:700;background:#fff3f3}
.desktop-header{display:none}
.search-icon{width:34px;height:34px;border:1px solid var(--line);border-radius:50%;position:relative;background:#fff;flex:0 0 34px}
.search-icon:before{content:"";position:absolute;width:11px;height:11px;border:2px solid #333;border-radius:50%;left:9px;top:8px}
.search-icon:after{content:"";position:absolute;width:8px;height:2px;background:#333;transform:rotate(45deg);right:8px;bottom:9px;border-radius:2px}
.main-btn{display:inline-flex;align-items:center;justify-content:center;background:var(--brand);color:#fff;border-radius:999px;padding:12px 26px;font-weight:800;box-shadow:0 12px 26px rgba(213,5,5,.22);border:0;min-height:46px}
.text-link{color:var(--brand);font-weight:700;display:inline-flex;align-items:center;gap:6px}
.text-link:after{content:"›";font-size:18px}
.badge{display:inline-flex;align-items:center;background:#fff3f3;color:var(--brand);font-weight:800;border-radius:999px;padding:6px 12px;font-size:13px;margin-bottom:12px}
.hero{background:linear-gradient(90deg,rgba(255,255,255,.98),rgba(255,255,255,.82)),url('banner.jpg') center/cover no-repeat;min-height:610px;display:flex;align-items:center;position:relative;border-bottom:1px solid var(--line)}
.hero:after{content:"";position:absolute;inset:auto 0 0;height:120px;background:linear-gradient(0deg,#fff,rgba(255,255,255,0))}
.hero-inner{position:relative;z-index:1;display:grid;gap:26px;padding:54px 0}
.hero h1{font-size:34px;line-height:1.16;margin:0;letter-spacing:-.5px;color:#111}
.hero p{font-size:16px;color:#444;margin:0;max-width:680px}
.hero-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.hero-note{font-size:13px;color:#666;background:#fff;border:1px solid var(--line);border-radius:999px;padding:9px 14px}
.hero-panel{background:#fff;border:1px solid var(--line);border-radius:24px;padding:18px;box-shadow:var(--shadow);max-width:520px}
.live-match{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:14px}
.team{text-align:center;font-weight:800;color:#222}.score{background:#111;color:#fff;border-radius:14px;padding:8px 12px;font-weight:900}.status{display:inline-block;color:var(--brand);background:#fff3f3;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:800}
.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;text-align:center}.stats-row strong{display:block;font-size:20px;color:#111}.stats-row span{font-size:12px;color:#666}
.category-grid,.service-grid,.card-grid{display:grid;gap:16px;grid-template-columns:1fr}
.sports-card,.service-card,.info-card,.faq-item,.data-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:0 8px 20px rgba(0,0,0,.04)}
.sports-card h3,.service-card h3,.info-card h3,.data-card h3{margin:0 0 8px;font-size:19px}.sports-card p,.service-card p,.info-card p,.data-card p{margin:0 0 14px;color:#555}
.service-card .tag{display:inline-flex;background:var(--brand);color:#fff;border-radius:999px;padding:3px 10px;font-size:12px;font-weight:800;margin-bottom:10px}
.split{display:grid;gap:28px;align-items:center}.split-content p{color:#555;margin:0 0 14px}.image-card{border-radius:24px;overflow:hidden;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.score-panel,.data-panel{display:grid;gap:14px}.score-list{display:grid;gap:12px}.score-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;display:grid;gap:6px}.score-item .line{display:flex;justify-content:space-between;align-items:center;gap:10px}.score-item strong{font-size:18px}.score-item small{color:#777}
.data-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.metric{background:#fafafa;border:1px solid var(--line);border-radius:16px;padding:14px}.metric strong{display:block;font-size:24px;color:var(--brand)}.metric span{color:#666;font-size:13px}
.app-showcase{background:#fff;border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:var(--shadow);display:grid;gap:24px;align-items:center}
.app-points{display:grid;gap:10px;margin:18px 0}.app-points span{display:block;background:#fff8f8;border:1px solid #ffdede;border-radius:14px;padding:10px 12px;color:#333}
.security-section .security-list,.responsible-list,.steps-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}.security-list li,.responsible-list li,.steps-list li{background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px 16px;color:#444}
.notice-box{background:#fff8f8;border:1px solid #ffd5d5;border-left:5px solid var(--brand);border-radius:16px;padding:18px;color:#444}
.faq-list{display:grid;gap:12px}.faq-item h3{margin:0 0 8px;font-size:18px}.faq-item p{margin:0;color:#555}
.cta{background:linear-gradient(135deg,var(--brand),#9d0000);color:#fff;border-radius:28px;padding:34px;text-align:center;position:relative;overflow:hidden}.cta:before{content:"";position:absolute;right:-40px;top:-40px;width:160px;height:160px;border-radius:50%;background:rgba(255,255,255,.12)}.cta h2{margin:0 0 10px;font-size:28px}.cta p{margin:0 auto 20px;max-width:720px;color:#fff}.cta .main-btn{background:#fff;color:var(--brand);box-shadow:none}.cta .main-btn:hover{background:#f7f7f7}
.page-hero{background:linear-gradient(120deg,#fff,#fff6f6);border-bottom:1px solid var(--line);padding:46px 0}.page-hero h1{margin:0 0 12px;font-size:32px;line-height:1.2}.page-hero p{margin:0;color:#555;max-width:820px}
.content-flow{display:grid;gap:20px}.content-flow p{margin:0;color:#555}.feature-list{display:grid;gap:14px;grid-template-columns:1fr}.check-list{padding-left:0;margin:0;list-style:none;display:grid;gap:10px}.check-list li{position:relative;padding-left:26px;color:#555}.check-list li:before{content:"";width:10px;height:10px;border-radius:50%;background:var(--brand);position:absolute;left:3px;top:10px}.table-panel{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:18px}.table-panel table{width:100%;border-collapse:collapse;min-width:620px}.table-panel th,.table-panel td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line)}.table-panel th{background:#fafafa;color:#222}.table-panel td{color:#555}
.site-footer{background:#151515;color:#d9d9d9;margin-top:0}.footer-grid{display:grid;gap:26px;padding:42px 0}.footer-logo{max-height:38px;margin-bottom:12px}.site-footer h3{color:#fff;margin:0 0 10px;font-size:16px}.site-footer p{margin:0;color:#bbb}.site-footer a{display:block;color:#bbb;margin:6px 0}.site-footer a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);text-align:center;padding:16px;color:#aaa}.footer-bottom p{margin:0;font-size:13px}
@media (min-width:640px){.category-grid{grid-template-columns:repeat(2,1fr)}.service-grid,.card-grid,.feature-list{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:44px}.app-showcase{grid-template-columns:1fr .8fr}.score-panel,.data-panel{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
@media (min-width:960px){.mobile-header,.mobile-nav{display:none!important}.desktop-header{height:76px;display:flex;align-items:center;gap:26px;width:min(1180px,94vw);margin:0 auto}.desktop-logo img{max-height:44px}.desktop-logo{flex:0 0 auto}.desktop-nav{display:flex;align-items:center;gap:8px;flex:1;justify-content:center}.desktop-nav a{padding:10px 12px;border-radius:999px;color:#333;font-weight:700;font-size:15px}.desktop-nav a.active,.desktop-nav a:hover{color:var(--brand);background:#fff3f3}.desktop-action{flex:0 0 auto;padding:10px 22px}.hero{min-height:680px;background:linear-gradient(90deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.86) 46%,rgba(255,255,255,.35) 100%),url('banner.jpg') center/cover no-repeat}.hero-inner{grid-template-columns:1.08fr .92fr;align-items:center}.hero h1{font-size:56px}.category-grid{grid-template-columns:repeat(3,1fr)}.service-grid{grid-template-columns:repeat(3,1fr)}.split{grid-template-columns:1fr 1fr}.section{padding:72px 0}.page-hero{padding:64px 0}.page-hero h1{font-size:42px}}
@media (min-width:1180px){.category-grid.six{grid-template-columns:repeat(6,1fr)}.category-grid.six .sports-card{padding:18px}.category-grid.six .sports-card h3{font-size:17px}}