:root{
  --bg:#0a0a0a;
  --panel:#141414;
  --ink:#fff;
  --mute:#cfcfcf;
  --yel:#ffe500;
  --max:1140px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);
  font:16px/1.7 "Arial Black","Microsoft YaHei",sans-serif;
  background:
    repeating-linear-gradient(135deg,transparent 0 28px,rgba(255,229,0,.04) 28px 29px),
    var(--bg);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.wrap{width:min(var(--max),calc(100% - 40px));margin:auto}
nav{
  position:sticky;top:0;z-index:20;height:74px;
  background:#000;border-bottom:4px solid var(--yel);
}
.nav,.hero-grid,.split,.visual,.faq-layout,.help-layout,.cta-in,.footer{display:grid;gap:24px;align-items:center}
.nav{height:74px;grid-template-columns:auto 1fr auto}
.brand{display:flex;align-items:center;gap:8px;font-weight:900;letter-spacing:.5px}
.brand b{background:var(--yel);color:#000;padding:4px 7px;font-size:12px}
.links{display:flex;justify-content:center;gap:22px;font-size:13px;font-weight:700;color:var(--mute)}
.button{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:46px;padding:0 18px;border:0;font-weight:900;color:#000;background:var(--yel);
}
.button.ghost{background:transparent;color:var(--yel);border:2px solid var(--yel)}
.hero{padding:30px 0 64px}
.hero-grid{grid-template-columns:1.05fr .95fr;min-height:500px}
.eyebrow{display:inline-block;background:var(--yel);color:#000;padding:4px 10px;font-size:12px;font-weight:900}
h1,h2{margin:12px 0 16px;line-height:1.12;font-weight:900}
.hero h1{font-size:clamp(32px,5vw,54px)}
.hero h1 span{color:var(--yel)}
p,.lead{color:var(--mute);font-family:"Microsoft YaHei",sans-serif;font-weight:400}
.actions,.micro{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.micro span{padding:5px 10px;border:2px solid var(--yel);font-size:12px;font-weight:700}
.deal{
  position:relative;padding:10px;background:var(--panel);border:4px solid var(--yel);
}
.deal:before{
  content:"BF DEAL";position:absolute;left:12px;top:-12px;background:var(--yel);color:#000;
  font-size:11px;font-weight:900;padding:3px 8px;
}
.deal img,.shot img,.visual img{width:100%;aspect-ratio:16/10;object-fit:cover}
.section{padding:68px 0}
.head{max-width:740px;margin-bottom:24px}
.head h2,h2{font-size:clamp(26px,4vw,40px)}
.grid6,.review-grid,.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.card,.review,.download-card,.article,.scene{
  padding:18px;background:var(--panel);border:2px solid #2a2a2a;
}
.card:nth-child(odd){border-color:var(--yel)}
.icon{color:var(--yel);font-size:12px}
.card h3{margin:10px 0 8px}
.split,.visual,.faq-layout{grid-template-columns:1fr 1fr;gap:32px}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:16px 0 22px}
.scene b{display:block;color:var(--yel);font-size:12px}
.visual{gap:0}
.visual img{aspect-ratio:16/11;border:4px solid var(--yel)}
.visual-copy{padding:36px 28px;background:#000;border:4px solid var(--yel);border-left:0}
.metrics{display:flex;gap:22px;margin:18px 0 24px}
.metrics b{display:block;color:var(--yel);font-size:28px}
.person{display:flex;gap:10px;align-items:center;margin-top:12px;font-family:"Microsoft YaHei",sans-serif}
.avatar{
  width:36px;height:36px;display:grid;place-items:center;
  background:var(--yel);color:#000;font-weight:900;
}
.person small{display:block;color:var(--mute)}
.faq-layout{grid-template-columns:.8fr 1.2fr}
details{border-bottom:2px solid #2a2a2a;background:var(--panel)}
summary{padding:14px 8px;font-weight:900;cursor:pointer;list-style:none}
.cta{padding:8px 0 68px}
.cta-in{grid-template-columns:1fr auto;padding:24px;background:var(--yel);color:#000}
.cta-in p{color:#333}
.page-head{padding:66px 0 12px}
.help-layout{grid-template-columns:210px 1fr;align-items:start}
.side{padding:12px;background:#000;border:2px solid var(--yel)}
.side a{display:block;padding:8px 4px;color:var(--mute)}
.policy{margin-top:14px;padding:14px;border:2px solid #2a2a2a}
.shot{margin:18px 0}
footer{padding:40px 0 12px;background:#000;color:#fff;border-top:4px solid var(--yel)}
.footer{grid-template-columns:1.4fr repeat(3,1fr);align-items:start}
.footer a,.footer p,.copy{color:#bbb;font-family:"Microsoft YaHei",sans-serif;font-weight:400}
.footer a{display:block;margin:8px 0}
.copy{margin-top:22px;padding-top:12px;border-top:1px solid #333}
@media(max-width:860px){
  .links{display:none}
  .hero-grid,.split,.visual,.faq-layout,.help-layout,.cta-in,.footer{grid-template-columns:1fr}
  .grid6,.review-grid,.cards,.scene-grid{grid-template-columns:1fr 1fr}
  .visual-copy{border-left:4px solid var(--yel)}
}
@media(max-width:560px){.grid6,.review-grid,.cards,.scene-grid,.footer{grid-template-columns:1fr}}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}