:root{
  --brand-from:#2563eb;
  --brand-to:#ef4444;
  --gold:#d4af37;
  --gold-2:#f5d67b;
  --bg:#0a0a0a;
  --bg-2:#121212;
  --bg-3:#181818;
  --line:rgba(255,255,255,.08);
  --red:#ef4444;
}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:#e5e5e5;
}
/* 渐变文字（红金） */
.gradient-text{
  background:linear-gradient(120deg,#f87171,#d4af37);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.gradient-gold{
  background:linear-gradient(120deg,#d4af37,#f5d67b);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
/* 网格背景 */
.bg-grid{
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:46px 46px;
}
/* 毛玻璃导航 */
.nav-blur{
  background:rgba(10,10,10,.82)!important;
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 10px 34px -12px rgba(0,0,0,.7);
  border-bottom:1px solid rgba(212,175,55,.18);
}
/* 卡片 hover */
.card-hover{transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;}
.card-hover:hover{
  transform:translateY(-8px);
  box-shadow:0 26px 54px -22px rgba(239,68,68,.5);
  border-color:rgba(239,68,68,.55);
}
/* 发光按钮 */
.btn-glow{box-shadow:0 12px 30px -10px rgba(239,68,68,.6);transition:transform .25s ease,box-shadow .25s ease;}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 18px 44px -10px rgba(239,68,68,.85);}
/* 淡入动画 */
.fade-in{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease;}
.fade-in.visible{opacity:1;transform:translateY(0);}
/* FAQ */
.faq-item{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--bg-2);transition:border-color .25s ease;}
.faq-item:hover{border-color:rgba(239,68,68,.45);}
.faq-question{cursor:pointer;display:flex;justify-content:space-between;align-items:center;padding:18px 20px;font-weight:600;color:#f5f5f5;}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 20px;color:#9ca3af;line-height:1.8;}
.faq-item.open .faq-answer{max-height:300px;padding:0 20px 18px;}
.faq-icon{transition:transform .3s ease;color:#d4af37;}
.faq-item.open .faq-icon{transform:rotate(180deg);}
/* 红描边卡片 */
.red-card{border:1px solid rgba(239,68,68,.25);background:linear-gradient(160deg,#141414,#0f0f0f);}
.red-card:hover{border-color:rgba(239,68,68,.6);}
/* 金数字 */
.gold-num{background:linear-gradient(120deg,#d4af37,#f5d67b);-webkit-background-clip:text;background-clip:text;color:transparent;}
/* 星级 */
.star-row{color:#d4af37;}
/* 页面内页 hero 通用 */
.page-hero{padding-top:140px;padding-bottom:70px;}