:root{
  --byd-bg:#050609;
  --byd-panel:#0b0f16;
  --byd-text:#f5f7fb;
  --byd-muted:rgba(245,247,251,.72);
  --byd-line:rgba(245,247,251,.2);
  --byd-red:#e60012;
  --byd-content:min(96vw,1720px);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--byd-bg);color:var(--byd-text)}
body{
  font-family:"Helvetica Neue",Helvetica,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  letter-spacing:0;
}

.byd-page{min-height:100vh}

.byd-nav{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:50;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 34px;
  background: transparent;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.byd-brand{display:block;width:94px}
.byd-brand img{display:block;width:100%;height:auto}

.byd-nav nav{display:flex;gap:30px}
.byd-nav a{
  color:var(--byd-text);
  text-decoration:none;
  font-family:"PingFang SC","Source Han Sans K","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  line-height:1;
  opacity:.94;
}
.byd-nav a.is-active{
  opacity:1;
  padding-bottom:0;
  border-bottom:0;
}

.byd-main{padding-bottom:80px}

.byd-hero{padding:92px 0 28px}

.byd-player{
  width:min(96vw,1720px);
  margin:0 auto;
  aspect-ratio:16/9;
  position:relative;
  background:#000;
  overflow:hidden;
  border-radius:8px;
}

.byd-video{
  width:100%;
  height:100%;
  object-fit:contain;
  display:block;
  border-radius:inherit;
}

.byd-controls{
  position:absolute;
  left:50%;
  top:50%;
  transform:translate(-50%,-50%);
  width:min(40vw,520px);
  color:#fff;
  opacity:0;
  pointer-events:none;
  transition:opacity .22s ease;
  mix-blend-mode:difference;
}

.byd-player.is-controls-visible .byd-controls{
  opacity:1;
  pointer-events:auto;
}

.byd-progress{
  width:100%;
  height:2px;
  background:rgba(255,255,255,.35);
  cursor:pointer;
}

.byd-progress__bar{
  width:0;
  height:100%;
  background:#fff;
}

.byd-meta{
  margin-top:10px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:12px;
  line-height:1;
}

.byd-actions{display:flex;gap:14px}
.byd-btn{
  border:0;
  padding:0;
  background:transparent;
  color:inherit;
  font:inherit;
  cursor:pointer;
}

.byd-story,
.byd-section{
  width:var(--byd-content);
  margin:0 auto;
}

.byd-story{
  display:grid;
  grid-template-columns:minmax(320px,1fr) minmax(500px,1fr);
  gap:clamp(36px,4vw,62px);
  padding:26px 0 clamp(40px,4.2vw,72px);
}

.byd-logo{
  display:block;
  width:min(270px,82%);
  height:auto;
  margin:0 0 24px;
}

.byd-table{width:100%}
.byd-row{
  min-height:clamp(56px,4.6vw,72px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  border-bottom:1px solid rgba(255,255,255,.28);
}

.byd-row:last-child{border-bottom:0}
.byd-row span:first-child{
  font-size:clamp(14px,.95vw,18px);
  font-weight:500;
}
.byd-row span:last-child{
  font-size:clamp(14px,.95vw,18px);
  font-weight:500;
  text-align:right;
}

.byd-copy{padding-top:clamp(118px,8.4vw,192px)}
.byd-copy p{margin:0 0 34px}
.byd-copy p:last-child{margin-bottom:0}

.byd-head{
  display:block;
  margin-bottom:8px;
  font-size:clamp(16px,1.15vw,21px);
  line-height:1.45;
  font-weight:700;
}

.byd-body{
  display:block;
  font-size:clamp(13px,.9vw,16px);
  line-height:1.9;
  color:#fff;
}

.byd-kicker{
  margin:0 0 14px;
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.08em;
  color:var(--byd-muted);
}

.byd-assets{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(12px,1.45vw,18px);
  padding-bottom:18px;
  grid-auto-flow:row;
}

.byd-section--assets .byd-assets{
  padding-bottom:0;
}

.byd-section--assets{
  margin-top:clamp(10px,1.4vw,18px);
}

.byd-section--assets .byd-kicker{
  margin:0 0 5px;
  font-size:13px;
  letter-spacing:.02em;
  text-transform:none;
  color:rgba(245,247,251,.9);
}

.byd-kicker--assets-anchor{
  grid-column:span 12;
  margin:6px 0 10px;
}

.byd-asset{
  margin:0;
  grid-column:auto;
  overflow:hidden;
  background:transparent;
  position:relative;
}

.byd-asset--full{grid-column:1/-1}

.byd-asset img{
  display:block;
  width:100%;
  height:auto;
}

.byd-asset--portrait,
.byd-asset--half{grid-column:auto}

.byd-section--motion{
  padding-top:clamp(26px,2.8vw,46px);
}

@media (max-width:1024px){
  .byd-nav{padding:16px 20px}
  .byd-nav nav{gap:16px}
  .byd-nav a{font-size:13px}

  .byd-story{
    grid-template-columns:1fr;
    gap:26px;
  }

  .byd-copy{padding-top:22px}

  .byd-controls{
    width:min(66vw,320px);
  }

}

@media (max-width:760px){
  .byd-hero{padding:84px 0 18px}

  .byd-player{
    width:min(94vw,620px);
  }

  .byd-story,
  .byd-section{
    width:min(94vw,620px);
  }

  .byd-row{
    min-height:58px;
    gap:16px;
  }

  .byd-row span:last-child{
    max-width:64%;
    font-size:13px;
  }

  .byd-logo{
    width:min(210px,72%);
    margin-bottom:18px;
  }

  .byd-copy{padding-top:10px}
  .byd-copy p{margin:0 0 18px}
  .byd-head{font-size:16px}
  .byd-body{font-size:13px;line-height:1.85}

  .byd-assets{
    grid-template-columns:1fr;
    gap:10px;
  }

  .byd-asset,
  .byd-asset--full,
  .byd-asset--portrait,
  .byd-asset--half{
    grid-column:1/-1;
  }

}