/* roulang page: index */
:root{
  --c1:#e2552b;
  --c2:#16212e;
  --bg:#f8f5f0;
  --fg:#1c2026;
  --mut:#6d7480;
  --bd:#e6dfd4;
  --rad:16px;
  --sd:0 10px 30px rgba(20,32,46,.08);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:var(--bg);color:var(--fg);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700}
p{margin:0}
a:focus-visible,summary:focus-visible{outline:2px solid var(--c1);outline-offset:3px;border-radius:6px}
.bfbhq-wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}

/* 顶栏 */
.bfbhq-top{position:sticky;top:0;z-index:30;background:rgba(248,245,240,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--bd)}
.bfbhq-topin{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:74px}
.bfbhq-brand{display:flex;align-items:center;gap:11px;font-weight:700;flex:0 0 auto}
.bfbhq-mark{width:44px;height:44px;border-radius:13px;background:var(--c1);color:#fff;display:grid;place-items:center;font-size:19px;font-weight:700;box-shadow:0 8px 18px rgba(226,85,43,.32)}
.bfbhq-name{font-size:19px;letter-spacing:.5px}
.bfbhq-nav{display:flex;gap:4px;flex-wrap:wrap}
.bfbhq-nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:999px;font-size:15px;color:#3d444e;transition:background .2s,color .2s,box-shadow .2s}
.bfbhq-nav a:hover{background:#fff;color:var(--c1);box-shadow:0 6px 16px rgba(20,32,46,.09)}

/* 首屏 */
.bfbhq-hero{position:relative;color:#f6f2ec;background:var(--c2) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;overflow:hidden}
.bfbhq-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(104deg,rgba(12,19,27,.95) 0%,rgba(12,19,27,.8) 46%,rgba(12,19,27,.42) 100%)}
.bfbhq-heroin{position:relative;display:grid;grid-template-columns:1.4fr .6fr;gap:44px;align-items:center;padding-top:66px;padding-bottom:66px}
.bfbhq-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.2em;color:#ffb08a;border:1px solid rgba(255,176,138,.4);border-radius:999px;padding:5px 13px;margin-bottom:18px}
.bfbhq-hero h1{font-size:clamp(30px,4.1vw,50px);letter-spacing:.5px}
.bfbhq-hero h1 em{font-style:normal;color:#ff9a6a}
.bfbhq-sub{margin-top:14px;font-size:18px;color:#e5dcd2}
.bfbhq-lead{margin-top:16px;max-width:640px;font-size:15px;line-height:1.9;color:#c3ccd6}
.bfbhq-herobtns{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.bfbhq-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:999px;background:var(--c1);color:#fff;font-size:15px;font-weight:600;transition:transform .2s,box-shadow .2s,background .2s;box-shadow:0 12px 26px rgba(226,85,43,.32)}
.bfbhq-btn:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(226,85,43,.4)}
.bfbhq-btn-ghost{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.35);box-shadow:none}
.bfbhq-btn-ghost:hover{background:rgba(255,255,255,.16);box-shadow:none}
.bfbhq-facts{display:flex;flex-wrap:wrap;gap:14px 34px;margin-top:30px;padding-top:22px;border-top:1px solid rgba(255,255,255,.16)}
.bfbhq-facts li{display:flex;flex-direction:column;gap:2px}
.bfbhq-facts strong{font-size:15px;color:#fff;font-weight:600}
.bfbhq-facts span{font-size:13px;color:#a9b4c0}
.bfbhq-poster{position:relative;margin:0;aspect-ratio:3/4;max-width:340px;justify-self:end;border-radius:20px;overflow:hidden;box-shadow:0 26px 60px rgba(0,0,0,.5)}
.bfbhq-poster img{width:100%;height:100%;object-fit:cover}
.bfbhq-poster figcaption{position:absolute;left:0;right:0;bottom:0;padding:36px 16px 14px;font-size:14px;color:#fff;background:linear-gradient(to top,rgba(8,13,19,.92),rgba(8,13,19,0))}

/* 板块通用 */
.bfbhq-sec{padding:64px 0}
.bfbhq-sec-alt{background:#fff}
.bfbhq-hd{max-width:780px;margin-bottom:30px}
.bfbhq-eyebrow{margin:0 0 8px;font-size:13px;letter-spacing:.18em;color:var(--c1);font-weight:600}
.bfbhq-h2{font-size:clamp(22px,2.6vw,30px);letter-spacing:.4px}
.bfbhq-desc{margin-top:12px;color:var(--mut);font-size:15px;line-height:1.85}
.bfbhq-meta{font-size:14px;color:var(--mut)}
.bfbhq-badge{position:absolute;top:10px;left:10px;z-index:2;background:rgba(12,21,30,.82);color:#fff;font-size:12px;line-height:1;padding:6px 9px;border-radius:999px;letter-spacing:.04em}
.bfbhq-tag{font-size:12px;color:var(--mut);border:1px solid var(--bd);border-radius:999px;padding:2px 9px;white-space:nowrap}

/* 亮点 */
.bfbhq-grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.bfbhq-hl{background:#fff;border:1px solid var(--bd);border-radius:var(--rad);padding:22px;box-shadow:var(--sd);transition:transform .2s,box-shadow .2s}
.bfbhq-hl:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(20,32,46,.12)}
.bfbhq-hl h3{font-size:16px;margin-bottom:8px}
.bfbhq-hl p{font-size:14px;color:var(--mut);line-height:1.75}
.bfbhq-hl b{display:block;width:34px;height:4px;border-radius:2px;background:var(--c1);margin-bottom:14px}

/* 热播 */
.bfbhq-hot{display:grid;grid-template-columns:1.12fr 1fr;gap:var(--gap)}
.bfbhq-big{position:relative;display:flex;align-items:flex-end;min-height:400px;border-radius:var(--rad);overflow:hidden;box-shadow:var(--sd)}
.bfbhq-big img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.bfbhq-big::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(9,15,21,.92),rgba(9,15,21,.12) 62%)}
.bfbhq-bigbody{position:relative;z-index:2;padding:24px;color:#fff}
.bfbhq-bigbody h3{font-size:24px}
.bfbhq-bigbody p{margin-top:6px;font-size:14px;color:#cdd6df}
.bfbhq-mini{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap)}
.bfbhq-card{background:#fff;border:1px solid var(--bd);border-radius:var(--rad);overflow:hidden;box-shadow:var(--sd);transition:transform .2s,box-shadow .2s}
.bfbhq-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(20,32,46,.13)}
.bfbhq-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#ded8ce}
.bfbhq-thumb img{width:100%;height:100%;object-fit:cover}
.bfbhq-cbody{padding:13px 15px 15px}
.bfbhq-cbody h3{font-size:15px}
.bfbhq-cbody p{margin-top:4px;font-size:14px;color:var(--mut)}

/* 分类 */
.bfbhq-chips{display:flex;flex-wrap:wrap;gap:12px}
.bfbhq-chips span{display:inline-flex;align-items:center;min-height:44px;padding:0 20px;border-radius:999px;background:#fff;border:1px solid var(--bd);font-size:15px;color:#38404a;box-shadow:0 4px 12px rgba(20,32,46,.05)}

/* 轨道 */
.bfbhq-track{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.bfbhq-tile h3{margin-top:11px;font-size:15px;line-height:1.4}
.bfbhq-tile p{margin-top:3px;font-size:14px;color:var(--mut)}
.bfbhq-posterbox{position:relative;aspect-ratio:3/4;border-radius:13px;overflow:hidden;background:#ded8ce;box-shadow:var(--sd)}
.bfbhq-posterbox img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.bfbhq-tile:hover .bfbhq-posterbox img{transform:scale(1.05)}

/* 高分 */
.bfbhq-score-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.bfbhq-score{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--bd);border-radius:var(--rad);padding:18px 20px;box-shadow:var(--sd)}
.bfbhq-num{font-size:27px;font-weight:700;color:var(--c1);line-height:1.1;min-width:56px}
.bfbhq-score h3{font-size:16px}
.bfbhq-score p{margin-top:5px;font-size:14px;color:var(--mut);line-height:1.7}

/* 排行 */
.bfbhq-rank{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.bfbhq-rank li{display:grid;grid-template-columns:32px 1fr auto auto;align-items:center;gap:12px;padding:13px 0;border-bottom:1px dashed var(--bd)}
.bfbhq-no{width:28px;height:28px;border-radius:9px;background:#efe9df;color:#7a8290;display:grid;place-items:center;font-size:13px;font-weight:700}
.bfbhq-rank li:nth-child(-n+3) .bfbhq-no{background:var(--c1);color:#fff}
.bfbhq-rt{font-size:15px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bfbhq-rs{font-size:15px;font-weight:700;color:var(--c1)}

/* 近期上线 */
.bfbhq-newlist{display:grid;gap:12px}
.bfbhq-newlist li{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;background:#fff;border:1px solid var(--bd);border-radius:var(--rad);padding:16px 20px;box-shadow:var(--sd);transition:transform .2s,box-shadow .2s}
.bfbhq-newlist li:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(20,32,46,.12)}
.bfbhq-newlist h3{font-size:16px}
.bfbhq-ntag{font-size:12px;color:#fff;background:var(--c2);border-radius:999px;padding:5px 11px;white-space:nowrap}

/* 专题 */
.bfbhq-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.bfbhq-topic{background:#fff;border:1px solid var(--bd);border-radius:var(--rad);padding:26px 24px;box-shadow:var(--sd);display:flex;flex-direction:column;gap:10px;transition:transform .2s,box-shadow .2s}
.bfbhq-topic:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(20,32,46,.12)}
.bfbhq-topic h3{font-size:18px}
.bfbhq-topic p{font-size:14px;color:var(--mut);line-height:1.8;flex:1}
.bfbhq-topic span{font-size:13px;color:var(--c1);font-weight:600}

/* 资讯 */
.bfbhq-news{display:grid;gap:0}
.bfbhq-news li{display:grid;grid-template-columns:1fr auto;align-items:center;gap:20px;padding:20px 0;border-bottom:1px solid var(--bd)}
.bfbhq-news li:first-child{padding-top:0}
.bfbhq-news h3{font-size:16px;line-height:1.5}
.bfbhq-news p{margin-top:6px;font-size:14px;color:var(--mut);line-height:1.7}
.bfbhq-when{font-size:13px;color:var(--mut);border:1px solid var(--bd);border-radius:999px;padding:4px 12px;white-space:nowrap}

/* 问答 */
.bfbhq-faq{display:grid;gap:12px;max-width:900px}
.bfbhq-faq details{background:#fff;border:1px solid var(--bd);border-radius:var(--rad);padding:4px 20px;box-shadow:var(--sd)}
.bfbhq-faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;min-height:52px;font-size:16px;font-weight:600}
.bfbhq-faq summary::-webkit-details-marker{display:none}
.bfbhq-faq summary::after{content:"+";margin-left:auto;color:var(--c1);font-size:20px;font-weight:400}
.bfbhq-faq details[open] summary::after{content:"−"}
.bfbhq-faq p{padding:0 0 18px;font-size:14px;color:var(--mut);line-height:1.85}

/* 收口 */
.bfbhq-cta{background:var(--c2);color:#f6f2ec;border-radius:22px;padding:38px 40px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;box-shadow:0 24px 50px rgba(16,26,36,.22)}
.bfbhq-cta h2{font-size:clamp(20px,2.4vw,26px)}
.bfbhq-cta p{margin-top:10px;font-size:14px;color:#aeb9c5;max-width:520px;line-height:1.8}

/* 页脚 */
.bfbhq-foot{background:#101a24;color:#b9c2cc;padding-top:56px}
.bfbhq-footgrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.bfbhq-footgrid h4{color:#fff;font-size:14px;letter-spacing:.1em;margin-bottom:14px}
.bfbhq-footgrid p{font-size:14px;line-height:1.8;color:#8d9aa7;max-width:300px}
.bfbhq-footgrid li{margin-bottom:10px;font-size:14px}
.bfbhq-footgrid li a{color:#b9c2cc;transition:color .2s}
.bfbhq-footgrid li a:hover{color:#ff9a6a}
.bfbhq-copy{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:13px;color:#7c8894;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}

@media (max-width:1024px){
  .bfbhq-heroin{grid-template-columns:1fr;gap:34px;padding-top:52px;padding-bottom:52px}
  .bfbhq-poster{justify-self:start;max-width:300px}
  .bfbhq-grid4{grid-template-columns:1fr 1fr}
  .bfbhq-hot{grid-template-columns:1fr}
  .bfbhq-track{grid-template-columns:repeat(3,1fr)}
  .bfbhq-score-list{grid-template-columns:1fr}
  .bfbhq-rank{grid-template-columns:1fr}
  .bfbhq-grid3{grid-template-columns:1fr 1fr}
  .bfbhq-footgrid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .bfbhq-topin{flex-direction:column;align-items:flex-start;gap:6px;padding:10px 0}
  .bfbhq-nav{flex-wrap:nowrap;overflow-x:auto;width:100%;padding-bottom:4px}
  .bfbhq-nav a{white-space:nowrap;padding:0 12px}
  .bfbhq-sec{padding:52px 0}
  .bfbhq-hero h1{font-size:clamp(26px,6.4vw,34px)}
  .bfbhq-sub{font-size:16px}
  .bfbhq-big{min-height:320px}
  .bfbhq-cta{padding:28px 24px}
  .bfbhq-news li{grid-template-columns:1fr;gap:8px}
  .bfbhq-when{justify-self:start}
}
@media (max-width:520px){
  .bfbhq-wrap{padding:0 16px}
  .bfbhq-grid4,.bfbhq-grid3,.bfbhq-mini{grid-template-columns:1fr}
  .bfbhq-track{grid-template-columns:1fr 1fr;gap:14px}
  .bfbhq-footgrid{grid-template-columns:1fr;gap:26px}
  .bfbhq-heroin{padding-top:38px;padding-bottom:38px}
  .bfbhq-sec{padding:44px 0}
  .bfbhq-facts{gap:14px 22px}
  .bfbhq-faq details{padding:4px 16px}
  .bfbhq-faq summary{font-size:15px}
  .bfbhq-newlist li{grid-template-columns:1fr auto;gap:10px 12px}
  .bfbhq-ntag{grid-column:1/-1;justify-self:start}
}