/* ===== bv001 绯红能量·体育企业模板 · 自实现样式（无外部依赖） ===== */
:root{
  --bg:#ffffff; --bg2:#f7f8fc; --ink:#111a2b; --muted:#5b6b84;
  --brand:#c62030; --brand2:#8f1522; --gold:#f5b320;
  --line:#e6e9f2; --panel:#ffffff; --radius:16px;
  --shadow:0 16px 40px rgba(17,26,43,.08);
  --wrap:1200px;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{background:var(--bg);color:var(--ink);font-family:"Segoe UI","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;transition:color .2s;}
a:hover{color:var(--brand);}
img{max-width:100%;display:block;border:0;}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em;font-weight:800;color:var(--ink);}
ul{margin:0;padding:0;list-style:none;}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px;}
.bv-py{padding:76px 0;}
.muted{color:var(--muted);}

/* ---------- 顶部信息条 ---------- */
.bv-topbar{background:linear-gradient(90deg,var(--brand2),var(--brand));color:#ffe9ec;font-size:13px;}
.bv-topbar .wrap{display:flex;align-items:center;justify-content:space-between;min-height:38px;gap:16px;flex-wrap:wrap;padding-top:4px;padding-bottom:4px;}
.bv-topbar b{color:var(--gold);}
.bv-topbar .dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:#3ddc84;margin-right:6px;animation:bvPulse 1.4s infinite;}
@keyframes bvPulse{0%,100%{opacity:1}50%{opacity:.35}}

/* ---------- 头部导航 ---------- */
.bv-header{position:sticky;top:0;z-index:900;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);box-shadow:0 4px 18px rgba(17,26,43,.05);}
.bv-nav{display:flex;align-items:center;justify-content:space-between;height:74px;position:relative;}
.bv-brand{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:900;color:var(--ink);}
.bv-brand .bv-logo{display:inline-block;flex:0 0 auto;width:46px;height:46px;background-size:contain;background-repeat:no-repeat;background-position:center;filter:drop-shadow(0 4px 10px rgba(198,32,48,.28));}
.bv-brand b{background:linear-gradient(90deg,var(--brand),#e0596a);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.bv-menu{display:flex;align-items:center;gap:6px;}
.bv-menu>li{position:relative;}
.bv-menu>li>a{display:block;padding:10px 16px;border-radius:10px;color:var(--ink);font-weight:600;font-size:15px;}
.bv-menu>li>a:hover,.bv-menu>li.active>a{color:var(--brand);background:rgba(198,32,48,.07);}
.bv-menu ul{position:absolute;top:100%;left:0;min-width:170px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px;display:none;box-shadow:var(--shadow);}
.bv-menu>li:hover ul{display:block;}
.bv-menu ul a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--muted);}
.bv-menu ul a:hover{color:var(--brand);background:var(--bg2);}
.bv-cta{display:inline-flex;align-items:center;gap:6px;padding:10px 22px;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;font-weight:800;font-size:15px;box-shadow:0 8px 22px rgba(198,32,48,.32);}
.bv-cta:hover{color:#fff;transform:translateY(-2px);}
.bv-burger{display:none;}
.bv-toggle{display:none;}

/* ---------- 按钮 ---------- */
.bv-btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:999px;font-weight:800;font-size:15px;cursor:pointer;transition:.2s;border:1px solid transparent;}
.bv-btn-primary{background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 10px 26px rgba(198,32,48,.32);}
.bv-btn-primary:hover{color:#fff;transform:translateY(-2px);}
.bv-btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.45);}
.bv-btn-ghost:hover{border-color:#fff;color:#fff;}
.bv-btn-line{background:#fff;color:var(--brand);border-color:var(--brand);}
.bv-btn-line:hover{background:var(--brand);color:#fff;}

/* ---------- Hero ---------- */
.bv-hero{position:relative;background:#150a0d;overflow:hidden;}
.bv-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5;}
.bv-hero-mask{position:absolute;inset:0;background:linear-gradient(115deg,rgba(143,21,34,.92) 0%,rgba(17,26,43,.78) 55%,rgba(17,26,43,.45) 100%);}
.bv-hero-in{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;padding:88px 0 96px;}
.bv-hero .bv-eyebrow{color:#ffd9de;}
.bv-hero h1{color:#fff;font-size:clamp(28px,4.2vw,46px);margin:16px 0 10px;}
.bv-hero h1 em{font-style:normal;color:var(--gold);}
.bv-hero .sub{color:var(--gold);font-size:clamp(15px,1.8vw,19px);font-weight:700;margin:0 0 14px;letter-spacing:.06em;}
.bv-hero p.lead{color:rgba(255,255,255,.85);font-size:16px;max-width:620px;margin:0 0 26px;}
.bv-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);font-size:13.5px;font-weight:700;color:var(--brand);}
.bv-hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px;}
.bv-hero-stats{display:flex;gap:34px;flex-wrap:wrap;}
.bv-hero-stats div{color:#fff;}
.bv-hero-stats b{display:block;font-size:26px;font-weight:900;color:var(--gold);}
.bv-hero-stats span{font-size:13px;color:rgba(255,255,255,.75);}
/* 直播赛况玻璃卡 */
.bv-live{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.2);backdrop-filter:blur(12px);border-radius:18px;padding:22px 24px;color:#fff;box-shadow:0 24px 60px rgba(0,0,0,.35);}
.bv-live .hd{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.bv-live .hd b{font-size:16px;color:#fff;}
.bv-live .live-tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:800;color:#fff;background:var(--brand);padding:4px 12px;border-radius:999px;}
.bv-live .live-tag i{width:7px;height:7px;border-radius:50%;background:#fff;animation:bvPulse 1.2s infinite;}
.bv-live .m{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:13px 0;border-top:1px dashed rgba(255,255,255,.22);font-size:14.5px;}
.bv-live .m .t{display:flex;align-items:center;gap:8px;min-width:0;}
.bv-live .m .t span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:120px;}
.bv-live .m .sc{font-weight:900;color:var(--gold);font-size:17px;}
.bv-live .m .st{font-size:12px;color:rgba(255,255,255,.65);}
.bv-live .ft{margin-top:14px;font-size:12.5px;color:rgba(255,255,255,.65);text-align:center;}

/* ---------- 指标条 ---------- */
.bv-metrics{position:relative;margin-top:-44px;z-index:5;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);display:grid;grid-template-columns:repeat(4,1fr);padding:26px 10px;}
.bv-metrics div{text-align:center;border-right:1px dashed var(--line);}
.bv-metrics div:last-child{border-right:0;}
.bv-metrics b{display:block;font-size:30px;font-weight:900;color:var(--brand);line-height:1.2;}
.bv-metrics b i{font-style:normal;color:var(--gold);}
.bv-metrics span{font-size:14px;color:var(--muted);}

/* ---------- 区块标题 ---------- */
.bv-head{text-align:center;max-width:760px;margin:0 auto 44px;}
.bv-head .k{display:inline-block;font-size:12.5px;font-weight:900;letter-spacing:.22em;color:var(--brand);background:rgba(198,32,48,.08);border:1px solid rgba(198,32,48,.2);padding:5px 16px;border-radius:999px;margin-bottom:14px;text-transform:uppercase;}
.bv-head h2{font-size:clamp(24px,3vw,34px);}
.bv-head p{color:var(--muted);margin:0;}

/* ---------- 关于我们 ---------- */
.bv-about{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center;}
.bv-about-img{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.bv-about-img img{width:100%;height:100%;object-fit:cover;}
.bv-about-badge{position:absolute;left:18px;bottom:18px;background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;font-size:13.5px;font-weight:800;padding:9px 18px;border-radius:999px;box-shadow:0 10px 24px rgba(198,32,48,.4);}
.bv-about h2{font-size:clamp(22px,2.8vw,32px);}
.bv-about .lead{color:var(--muted);font-size:15.5px;}
.bv-feat{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px;}
.bv-feat li{background:var(--bg2);border:1px solid var(--line);border-radius:14px;padding:18px 20px;}
.bv-feat h4{font-size:16px;margin-bottom:6px;color:var(--brand);}
.bv-feat p{font-size:13.5px;color:var(--muted);margin:0;}

/* ---------- 核心服务（6 图卡） ---------- */
.bv-sec-bg{background:var(--bg2);}
.bv-svc{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.bv-svc .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;}
.bv-svc .card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:rgba(198,32,48,.35);}
.bv-svc .thumb{position:relative;aspect-ratio:4/3;overflow:hidden;}
.bv-svc .thumb img{width:100%;height:100%;object-fit:cover;transition:.4s;}
.bv-svc .card:hover .thumb img{transform:scale(1.06);}
.bv-svc .thumb .tag{position:absolute;left:12px;top:12px;background:rgba(17,26,43,.72);color:var(--gold);font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;}
.bv-svc .body{padding:20px 22px 24px;}
.bv-svc h3{font-size:19px;margin-bottom:8px;}
.bv-svc p{color:var(--muted);font-size:14.5px;margin:0;}

/* ---------- 球星数据引擎（左图右特性） ---------- */
.bv-star{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:center;}
.bv-star-img{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.bv-star-img img{width:100%;height:100%;object-fit:cover;}
.bv-star-img .chip{position:absolute;right:16px;top:16px;background:var(--gold);color:#3a2604;font-size:12.5px;font-weight:900;padding:6px 14px;border-radius:999px;}
.bv-star-list{display:grid;gap:16px;margin-top:22px;}
.bv-star-list li{display:flex;gap:16px;background:var(--bg2);border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:12px;padding:16px 20px;}
.bv-star-list .ic{flex:0 0 auto;width:46px;height:46px;border-radius:12px;background:rgba(198,32,48,.1);display:grid;place-items:center;font-size:22px;}
.bv-star-list h4{font-size:16.5px;margin-bottom:4px;}
.bv-star-list p{margin:0;color:var(--muted);font-size:14px;}

/* ---------- App 下载横幅 ---------- */
.bv-app{position:relative;border-radius:22px;overflow:hidden;box-shadow:var(--shadow);}
.bv-app-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.bv-app-mask{position:absolute;inset:0;background:linear-gradient(100deg,rgba(143,21,34,.93) 0%,rgba(17,26,43,.82) 60%,rgba(17,26,43,.5) 100%);}
.bv-app-in{position:relative;padding:64px 56px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;}
.bv-app-in h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:10px;}
.bv-app-in p{color:rgba(255,255,255,.82);margin:0;max-width:560px;}
.bv-app-btns{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 资讯列表 ---------- */
.bv-news{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.bv-news .n{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s;}
.bv-news .n:hover{transform:translateY(-4px);border-color:rgba(198,32,48,.4);box-shadow:var(--shadow);}
.bv-news .n .thumb{flex:0 0 200px;align-self:stretch;overflow:hidden;}
.bv-news .n .thumb img{width:100%;height:100%;object-fit:cover;}
.bv-news .n .body{padding:18px 20px 18px 0;}
.bv-news .n .dt{color:var(--brand);font-size:13px;font-weight:700;}
.bv-news .n h3{font-size:18px;margin:6px 0 8px;}
.bv-news .n p{color:var(--muted);font-size:14px;margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.bv-news .more{color:var(--brand);font-weight:700;font-size:14px;}
.bv-news-more{text-align:center;margin-top:34px;}

/* ---------- 主内容+侧栏布局（内页/栏目页） ---------- */
.bv-layout{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:start;}
.bv-layout.full{grid-template-columns:1fr;}
.bv-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 30px;box-shadow:0 8px 24px rgba(17,26,43,.04);}
.bv-crumb{color:var(--muted);font-size:14px;margin-bottom:18px;}
.bv-crumb a{color:var(--muted);}.bv-crumb a:hover{color:var(--brand);}
.bv-crumb i{font-style:normal;margin:0 8px;color:#c8cfdd;}
.bv-article h1.detail-title,.bv-article h1{font-size:clamp(22px,3vw,32px);line-height:1.35;}
.bv-meta{display:flex;flex-wrap:wrap;gap:18px;color:var(--muted);font-size:14px;padding:14px 0 20px;border-bottom:1px solid var(--line);margin-bottom:22px;}
.bv-body{color:#2c3a52;font-size:16.5px;}
.bv-body p{margin:0 0 18px;}
.bv-body img{border-radius:12px;margin:8px auto;}
.bv-body h2,.bv-body h3{margin:26px 0 12px;color:var(--ink);}
.bv-body ul{list-style:disc;padding-left:22px;color:var(--muted);}
.bv-page-nav{display:flex;justify-content:space-between;gap:16px;margin-top:28px;padding-top:20px;border-top:1px solid var(--line);}
.bv-page-nav a{flex:1;background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:14px 18px;color:var(--muted);font-size:14px;}
.bv-page-nav a:hover{border-color:var(--brand);color:var(--ink);}
.bv-page-nav b{display:block;color:var(--ink);font-size:15px;margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

/* 侧栏 */
.bv-side .box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 22px;margin-bottom:22px;box-shadow:0 8px 24px rgba(17,26,43,.04);}
.bv-side .box h3{font-size:17px;margin-bottom:14px;padding-left:12px;border-left:4px solid var(--brand);}
.bv-side .li a{display:block;padding:9px 0;border-bottom:1px dashed var(--line);color:var(--ink);font-size:14.5px;}
.bv-side .li a:last-child{border-bottom:0;}
.bv-side .li a:hover{color:var(--brand);}
.bv-side .li time{color:var(--muted);font-size:12px;display:block;}
.bv-tags{display:flex;flex-wrap:wrap;gap:10px;}
.bv-tags a{padding:6px 14px;border-radius:999px;background:var(--bg2);border:1px solid var(--line);color:var(--muted);font-size:13px;}
.bv-tags a:hover{color:#fff;background:var(--brand);border-color:var(--brand);}

/* 分页 */
.bv-paginate{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:30px;}
.bv-paginate a,.bv-paginate span{min-width:40px;padding:9px 14px;border-radius:10px;background:#fff;border:1px solid var(--line);color:var(--muted);font-size:14px;}
.bv-paginate .current,.bv-paginate a:hover{background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;border-color:transparent;font-weight:800;}

/* 栏目页头 */
.bv-cat-hero{background:linear-gradient(120deg,var(--brand2),var(--brand) 55%,#2a3a5c);border-radius:var(--radius);padding:34px 36px;margin-bottom:28px;color:#fff;}
.bv-cat-hero h1{font-size:clamp(24px,3vw,34px);margin:0 0 6px;color:#fff;}
.bv-cat-hero p{color:rgba(255,255,255,.8);margin:0;}

/* ---------- 页脚 ---------- */
.bv-footer{background:#0d1424;color:#c6d0e2;margin-top:0;}
.bv-foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding:56px 0 40px;}
.bv-foot h6{color:#fff;font-size:16px;font-weight:800;margin:0 0 18px;}
.bv-foot .bv-brand{color:#fff;}
.bv-foot .bv-brand b{color:#fff;-webkit-text-fill-color:#fff;background:none;}
.bv-foot .about p{color:#8fa0bd;font-size:14px;margin:14px 0 0;}
.bv-foot ul li{margin-bottom:11px;}
.bv-foot ul a{color:#8fa0bd;font-size:14px;}
.bv-foot ul a:hover{color:var(--gold);}
.bv-foot .contact li{color:#8fa0bd;font-size:14px;display:flex;gap:10px;align-items:flex-start;}
.bv-copy{border-top:1px solid #22304d;padding:20px 0;color:#8fa0bd;font-size:13.5px;text-align:center;}
.bv-copy a{color:#c6d0e2;}
.bv-copy a:hover{color:var(--gold);}
.bv-friend{padding:18px 0;border-top:1px solid #22304d;color:#8fa0bd;font-size:13px;}
.bv-friend a{color:#8fa0bd;margin-right:14px;}
.bv-friend a:hover{color:var(--gold);}

/* 404 */
.bv-404{min-height:60vh;display:grid;place-items:center;text-align:center;}
.bv-404 .code{font-size:120px;font-weight:900;background:linear-gradient(90deg,var(--brand),var(--gold));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1;}
.bv-404 p{color:var(--muted);font-size:16px;margin:14px 0 26px;}

/* 单页/搜索 通用容器 */
.bv-main{padding:40px 0 10px;}
.bv-searchbar{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin-bottom:26px;}
.bv-searchbar input{width:100%;padding:12px 16px;border-radius:10px;border:1px solid var(--line);background:var(--bg2);color:var(--ink);font-size:15px;}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .bv-svc{grid-template-columns:repeat(2,1fr);}
  .bv-foot-grid{grid-template-columns:1fr 1fr;}
  .bv-metrics{grid-template-columns:repeat(2,1fr);gap:18px 0;}
  .bv-metrics div:nth-child(2){border-right:0;}
}
@media(max-width:860px){
  .bv-hero-in{grid-template-columns:1fr;padding:64px 0;}
  .bv-live{display:none;}
  .bv-layout{grid-template-columns:1fr;}
  .bv-about,.bv-star{grid-template-columns:1fr;}
  .bv-news{grid-template-columns:1fr;}
  .bv-app-in{padding:44px 26px;}
  /* 折叠菜单 */
  .bv-burger{display:grid;place-items:center;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);cursor:pointer;color:var(--ink);}
  .bv-menu{position:absolute;top:74px;left:-20px;right:-20px;flex-direction:column;align-items:stretch;background:#fff;border-bottom:1px solid var(--line);padding:14px 20px;gap:2px;display:none;box-shadow:var(--shadow);}
  .bv-menu>li>a{padding:12px 6px;}
  .bv-toggle:checked ~ .bv-nav .bv-menu{display:flex;}
  .bv-menu ul{position:static;display:block;border:0;background:transparent;box-shadow:none;padding-left:16px;}
}
@media(max-width:560px){
  .bv-svc,.bv-feat{grid-template-columns:1fr;}
  .bv-foot-grid{grid-template-columns:1fr;}
  .bv-news .n{flex-direction:column;}
  .bv-news .n .thumb{flex-basis:auto;height:180px;}
  .bv-news .n .body{padding:18px;}
  .bv-metrics{margin-top:-30px;}
}