.prod-hero{position:relative;margin-top:0;height:42vh;min-height:320px;color:#fff;overflow:hidden;background:url("../image/2.webp") center/cover no-repeat}
.prod-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(125deg,rgba(4,16,44,.8),rgba(4,16,44,.38))}
.hero-inner{position:relative;z-index:2;height:100%}
.hero-title{position:absolute;left:60px;bottom:42px;font-size:38px;font-weight:800;letter-spacing:.02em;padding:18px 26px;border-radius:20px;background:rgba(255,255,255,.08);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.14);box-shadow:0 20px 40px rgba(0,0,0,.18)}
.cat-nav{background:#0055FF;color:#fff}
.cat-nav .container{display:flex;gap:10px;align-items:center}
.cat-pill{display:inline-block;padding:10px 14px;background:rgba(255,255,255,.12);border-radius:999px;color:#fff;transition:transform .16s ease, background .16s ease}
.cat-pill.is-active{background:#fff;color:#0055FF;box-shadow:0 8px 18px rgba(0,0,0,.12)}
.cat-pill:hover{transform:scale(1.06);background:rgba(255,255,255,.20)}
.section{padding:34px 0}
.section:nth-of-type(odd){background:linear-gradient(180deg,#ffffff,#f8fbff)}
.section:nth-of-type(even){background:linear-gradient(180deg,#f7faff,#eef4ff)}
.section > .container{position:relative;padding-top:34px;padding-bottom:34px;border-radius:30px;background:linear-gradient(180deg,rgba(255,255,255,.92),rgba(245,250,255,.92));backdrop-filter:blur(8px);box-shadow:0 18px 42px rgba(0,61,160,.06);overflow:hidden}
.section > .container::before{content:"";position:absolute;right:-70px;top:-70px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(0,85,255,.12),rgba(0,85,255,0));pointer-events:none}
.section > .container::after{content:"";position:absolute;left:-60px;bottom:-90px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(93,151,255,.12),rgba(93,151,255,0));pointer-events:none}
.cat-toggle{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;width:100%;padding:0;margin-bottom:30px;border:0;background:none;text-align:left;cursor:pointer}
.main-cat-title{position:relative;display:inline-flex;align-items:center;min-height:56px;font-size:30px;font-weight:800;color:#0b2f4a;padding:0 26px 0 22px;border-radius:18px;background:#fff;box-shadow:0 12px 26px rgba(0,61,160,.08);z-index:1}
.main-cat-title::before{content:"";position:absolute;left:0;top:0;bottom:0;width:8px;border-radius:18px 0 0 18px;background:linear-gradient(180deg,#0055FF,#5d97ff)}
.main-cat-title::after{content:"";position:absolute;left:22px;right:22px;bottom:-12px;height:1px;background:linear-gradient(90deg,rgba(0,85,255,.22),rgba(0,85,255,0))}
.cat-toggle-side{display:inline-flex;align-items:center;gap:14px;padding-left:20px}
.cat-count{display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;background:rgba(0,85,255,.08);color:#0055FF;font-size:13px;font-weight:700;white-space:nowrap}
.cat-toggle-icon{position:relative;display:inline-flex;width:42px;height:42px;border-radius:50%;background:#fff;box-shadow:0 10px 20px rgba(0,61,160,.10)}
.cat-toggle-icon::before,.cat-toggle-icon::after{content:"";position:absolute;top:50%;left:50%;width:12px;height:2px;border-radius:999px;background:#0055FF;transform:translate(-50%,-50%)}
.cat-toggle-icon::after{transform:translate(-50%,-50%) rotate(90deg);transition:transform .2s ease}
.category-section.is-expanded .cat-toggle-icon::after{transform:translate(-50%,-50%) rotate(0deg)}
.cat-panel{position:relative;z-index:1}
.empty-state{grid-column:1/-1;padding:28px 24px;border-radius:18px;background:rgba(255,255,255,.88);border:1px dashed rgba(0,85,255,.18);color:#5b6a7c;font-size:14px;text-align:center}
.sub-category-block{margin-bottom:40px}
.sub-cat-title{font-size:20px;color:#334;font-weight:700;margin-bottom:20px;padding-left:12px;border-left:4px solid #0055FF}
.grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;align-items:stretch}
.card{position:relative;display:flex;flex-direction:column;height:100%;background:linear-gradient(180deg,#ffffff,#f8fbff);border-radius:20px;padding:14px;border:1px solid rgba(0,85,255,.08);box-shadow:0 12px 28px rgba(0,61,160,.06);transition:transform .18s ease, box-shadow .18s ease,border-color .18s ease;overflow:hidden}
.card::before{content:"";position:absolute;left:0;top:0;width:100%;height:4px;background:linear-gradient(90deg,#0055FF,#5d97ff)}
.card::after{content:"查看详情";position:absolute;right:16px;bottom:14px;font-size:12px;font-weight:700;color:#0055FF;opacity:.78;letter-spacing:.02em}
.card:hover{transform:translateY(-8px);border-color:rgba(0,85,255,.18);box-shadow:0 20px 40px rgba(0,61,160,.12)}
.card:hover .pic img{transform:scale(1.06)}
.pic{width:100%;aspect-ratio:1/1;border-radius:14px;overflow:hidden;background:#f5f8ff;box-shadow:inset 0 0 0 1px rgba(0,85,255,.05)}
.pic img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .28s ease}
.name{position:relative;font-weight:800;color:#0b2f4a;text-align:left;margin-top:14px;font-size:17px;line-height:1.5;padding-bottom:10px}
.name::after{content:"";position:absolute;left:0;bottom:0;width:42px;height:2px;border-radius:999px;background:linear-gradient(90deg,#0055FF,#7ba8ff)}
.desc{margin-top:10px;margin-bottom:22px;color:#5b6a7c;font-size:13px;line-height:1.75;text-align:left;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

@media (max-width:960px){
  .prod-hero{min-height:280px}
  .hero-title{left:24px;right:24px;bottom:28px;font-size:30px;padding:16px 20px}
  .section > .container{padding-top:26px;padding-bottom:26px}
  .cat-toggle{align-items:flex-start;gap:14px}
  .cat-toggle-side{padding-left:0}
  .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:640px){
  .hero-title{font-size:26px}
  .cat-nav .container{overflow-x:auto;padding-top:10px;padding-bottom:10px}
  .cat-toggle{flex-direction:column;align-items:stretch}
  .main-cat-title{font-size:24px}
  .cat-toggle-side{justify-content:space-between}
  .grid{grid-template-columns:1fr}
}