.site-header{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:var(--header-h);
  z-index:1300;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(10px) saturate(120%);
  border-bottom:1px solid rgba(230,50,46,.10);
  transition:height .25s ease,border-color .25s ease,box-shadow .25s ease,background-color .25s ease;
  pointer-events:auto;
}
.site-header.is-scrolled{
  border-color:rgba(230,50,46,.18);
  box-shadow:var(--shadow-sm);
  background:rgba(255,255,255,.98);
}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:var(--space-24)}
.logo-slot{display:grid;align-content:center;width:auto;height:auto;position:relative;overflow:hidden;text-decoration:none}
.brand-logo-main{display:block;font-size:24px;line-height:1.1;font-weight:700;color:#c1221e;letter-spacing:.05em}
.brand-logo-sub{display:block;margin-top:2px;font-size:10px;line-height:1;color:#8a8a8a;letter-spacing:.24em}
.nav-wrap{display:flex !important;align-items:center !important;gap:var(--space-16) !important;margin:0 !important;padding:0 !important;width:auto !important;position:relative !important}
.main-nav>ul{display:flex !important;align-items:center !important;gap:var(--nav-item-gap) !important;position:relative !important;z-index:1101 !important;margin:0 !important;padding:0 !important}
.nav-item{position:relative !important;z-index:1101 !important;margin:0 !important;padding:0 !important}
.nav-link{display:inline-flex !important;align-items:center !important;justify-content:center !important;height:42px !important;padding:0 var(--nav-link-px) !important;min-width:82px !important;font-size:var(--fz-14) !important;font-weight:var(--weight-regular) !important;border-radius:999px !important;color:#2f2f2f !important;transition:background .2s ease,color .2s ease,box-shadow .2s ease !important;position:relative !important;z-index:1101 !important;pointer-events:auto !important;cursor:pointer !important;text-decoration:none !important}
.nav-link:hover,.nav-item.is-active>.nav-link{background:var(--color-primary-soft);color:var(--color-primary);box-shadow:inset 0 0 0 1px rgba(230,50,46,.22)}
.header-cta{display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 18px;border-radius:999px;background:#e6322e;color:#fff;text-decoration:none;font-size:13px;font-weight:500;box-shadow:0 10px 18px rgba(230,50,46,.24);transition:transform .2s ease,filter .2s ease}
.header-cta:hover{transform:translateY(-1px);filter:brightness(1.02)}
.sub-nav{
  position:absolute;
  top:100%;
  left:0;
  min-width:var(--subnav-min-w);
  padding:var(--subnav-pad);
  background:rgba(255,255,255,.99);
  border:1px solid rgba(230,50,46,.14);
  border-radius:var(--card-radius);
  box-shadow:var(--shadow-md);
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:.2s ease;
}
.nav-item.has-sub:hover>.sub-nav,.nav-item.has-sub.is-open>.sub-nav{opacity:1;visibility:visible;transform:translateY(0)}
.sub-nav a{display:block;padding:9px 10px;border-radius:8px;color:#3a3a3a;text-decoration:none}
.sub-nav a:hover{background:rgba(230,50,46,.08);color:var(--color-primary)}
.product-tree-subnav{max-height:420px;overflow:auto;min-width:360px;padding:10px}
.product-tree-root,.product-tree-children{list-style:none;margin:0;padding-left:12px}
.product-tree-root{padding-left:0}
.product-tree-item{margin:2px 0}
.product-tree-link{display:block;padding:6px 8px;border-radius:8px;font-size:13px;line-height:1.35;color:#4b4b4b;text-decoration:none}
.product-tree-link:hover{background:rgba(230,50,46,.09);color:var(--color-primary)}
.product-tree-empty{padding:8px 10px;color:#777;font-size:13px}
.product-tree-mobile .product-tree-link{padding:8px 4px}
.mobile-toggle{display:none;width:40px;height:40px;border:1px solid rgba(230,50,46,.24);border-radius:10px;align-items:center;justify-content:center;cursor:pointer;background:#fff}
.mobile-toggle span{display:block;width:18px;height:2px;background:#2f2f2f;position:relative}
.mobile-toggle span::before,.mobile-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#2f2f2f}
.mobile-toggle span::before{top:-6px}.mobile-toggle span::after{top:6px}
.mobile-panel{position:fixed;top:0;right:-320px;width:300px;height:100%;background:#ffffff;border-left:1px solid rgba(230,50,46,.16);z-index:1100;padding:20px;overflow:auto;transition:right .25s ease}
.mobile-panel.is-open{right:0}
.mobile-backdrop{position:fixed;inset:0;background:rgba(16,16,16,.26);opacity:0;visibility:hidden;pointer-events:none;transition:.2s;z-index:1090}
.mobile-backdrop.is-open{opacity:1;visibility:visible;pointer-events:auto}
.mobile-nav a{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid rgba(230,50,46,.12);text-decoration:none;color:#313131}
.mobile-item{border-bottom:1px solid rgba(230,50,46,.12)}
.mobile-nav-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.mobile-nav-row > a{flex:1;border-bottom:0}
.mobile-sub-toggle{width:30px;height:30px;border:1px solid rgba(230,50,46,.30);border-radius:8px;line-height:1;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;background:#fff;color:#b42a25}
.mobile-sub{display:none;padding:4px 0 8px 12px}
.mobile-sub.is-open{display:block}
.promo-strip{display:flex;align-items:center;justify-content:space-between;gap:16px}
@media (min-width:768px){
  /* 修改说明：桌面端强制隐藏移动菜单层，避免覆盖导航点击。 */
  .mobile-panel{display:none !important}
  .mobile-backdrop{display:none !important}
}
@media (max-width:767px){
  .site-header{transition:transform .25s ease,height .25s ease,background .25s ease,border-color .25s ease,box-shadow .25s ease}
  .site-header.is-hide-mobile{transform:translateY(-100%)}
}
.hero{padding:var(--space-40) 0 var(--space-56)}
.hero .slot{border-radius:var(--radius-16)}
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-24)}
.section-title{width:240px;height:34px}
.section-extra{width:140px;height:22px}
.card{
  background:linear-gradient(180deg,#ffffff,#fffafa);
  border:1px solid rgba(230,50,46,.10);
  border-radius:var(--card-radius);
  overflow:hidden;
  transition:transform .28s cubic-bezier(.2,.8,.2,1),box-shadow .28s ease,border-color .28s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(230,50,46,.28);box-shadow:0 12px 28px rgba(27,27,27,.12)}
.card-body{padding:var(--space-16);display:grid;gap:var(--space-12)}
.card-link{cursor:pointer}
.filter-row{display:flex;gap:var(--space-12);flex-wrap:wrap;margin-bottom:var(--space-24)}
.filter-chip{width:106px;height:36px;border-radius:999px}
.breadcrumb{display:flex;gap:10px;align-items:center;padding:20px 0}
.breadcrumb .slot{width:80px;height:16px}
.detail-top{display:grid;grid-template-columns:1.1fr .9fr;gap:var(--space-24);margin-top:var(--space-24)}
.detail-tabs{display:flex;gap:var(--space-12);margin:var(--space-24) 0}
.detail-tab{width:110px;height:38px;border-radius:999px;border:1px solid rgba(230,50,46,.22);cursor:pointer;background:rgba(230,50,46,.05)}
.detail-tab.is-active{border-color:var(--color-primary);background:var(--color-primary-soft)}
.footer{background:#f8f8f8;padding:56px 0 24px;margin-top:88px;border-top:1px solid rgba(0,0,0,.08)}
.footer-main{display:grid;grid-template-columns:1.2fr 1fr 1.1fr;gap:24px;align-items:start}
.footer-brand h3{margin:0 0 10px;font-size:20px;line-height:1.3;color:#202020}
.footer-brand p{margin:0;color:#6c6c6c;line-height:1.7;font-size:14px}
.footer-links{display:grid;gap:10px;align-content:start}
.footer-links a{display:inline-flex;color:#3b3b3b;text-decoration:none;transition:color .2s ease}
.footer-links a:hover{color:#e6322e}
.footer-contact{display:grid;gap:8px}
.footer-contact p{margin:0;color:#555;line-height:1.7;font-size:14px}
.footer-contact a{color:#212121;text-decoration:none}
.footer-contact a:hover{color:#e6322e}
.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:20px}
.footer .slot{background:rgba(255,255,255,.7);border-color:rgba(0,0,0,.12)}
.footer-bottom{margin-top:24px;padding-top:16px;border-top:1px solid rgba(0,0,0,.10)}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:#777}
.footer-bottom-inner a{color:#777;text-decoration:none}
.footer-bottom-inner a:hover{color:#e6322e}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.form-grid .full{grid-column:1 / -1}
.input-slot{height:46px}
.textarea-slot{height:130px}