/* ====== 产品分类页（深蓝·青 高端风格） ====== */
.ypc-hero{position:relative;display:flex;align-items:center;min-height:300px;padding:46px 0 60px;background:linear-gradient(135deg,#0d2440 0%,#1a3a5c 45%,#2a5278 100%);color:#fff;overflow:hidden}
.ypc-hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 18% 32%,rgba(0,194,168,.16) 0%,transparent 52%),radial-gradient(circle at 82% 68%,rgba(255,255,255,.09) 0%,transparent 48%);pointer-events:none}
.ypc-hero::after{content:"";position:absolute;inset:0;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:56px 56px;pointer-events:none}
.ypc-hero-bg{background-size:cover;background-position:center}
.ypc-hero-overlay{position:absolute;inset:0;z-index:1}
.ypc-hero-inner{position:relative;z-index:2;text-align:center}
.ypc-hero-crumb{font-size:14px;color:rgba(255,255,255,.62);display:flex;align-items:center;justify-content:center;gap:9px;margin-bottom:20px;letter-spacing:.5px}
.ypc-hero-crumb a{color:rgba(255,255,255,.85);text-decoration:none;transition:color .3s}
.ypc-hero-crumb a:hover{color:#00c2a8}
.ypc-crumb-sep{opacity:.4}
.ypc-hero-title{font-size:38px;font-weight:800;line-height:1.35;letter-spacing:1px;margin:0 0 14px}
.ypc-hero-sub{font-size:15.5px;color:rgba(255,255,255,.72);max-width:700px;margin:0 auto;line-height:1.9;letter-spacing:.4px;white-space:pre-line}

/* ====== 主布局 ====== */
.ypc-main-layout{background:#f6f9fc;padding:56px 0 90px}
.ypc-main-grid{display:grid;grid-template-columns:320px 1fr;gap:30px;align-items:start}

/* ====== 侧边栏卡片 ====== */
.ypc-card{background:#fff;border:1px solid #eef2f7;border-radius:18px;box-shadow:0 4px 18px rgba(16,26,38,.05);padding:26px;margin-bottom:24px;overflow:hidden}
.ypc-card:last-child{margin-bottom:0}
.ypc-card-head{margin-bottom:20px}
.ypc-eyebrow{display:inline-block;margin:0 0 10px;font-size:12px;font-weight:700;letter-spacing:3px;text-transform:uppercase;color:#00a28c}
.ypc-card-title{margin:0;font-size:21px;font-weight:800;color:#101a26;line-height:1.3}
.ypc-side-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;padding-bottom:14px;border-bottom:2px solid #f1f4f8}
.ypc-side-title{font-size:18px;font-weight:800;color:#101a26;text-decoration:none}
.ypc-side-head a.ypc-side-title:hover{color:#1a3a5c}
.ypc-side-arrow{color:#a6aebb}
.ypc-side-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.ypc-side-item>a{position:relative;display:flex;align-items:center;gap:9px;padding:12px 14px;border-radius:12px;background:#f4f7fb;color:#101a26;font-size:15px;font-weight:800;text-decoration:none;transition:all .3s}
.ypc-side-item>a::before{content:"";flex:0 0 auto;width:4px;height:15px;border-radius:3px;background:linear-gradient(180deg,#00c2a8,#00a28c)}
.ypc-side-item>a:hover{background:#edf3fb;color:#1a3a5c}
.ypc-side-item.is-active>a{background:linear-gradient(135deg,#1a3a5c,#2a5278);color:#fff;box-shadow:0 8px 18px rgba(26,58,92,.18)}
.ypc-side-item.is-active>a::before{background:#7fe6d8}
.ypc-side-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ypc-side-count{flex:0 0 auto;min-width:24px;height:19px;display:inline-flex;align-items:center;justify-content:center;padding:0 7px;border-radius:99px;background:rgba(26,58,92,.08);color:#1a3a5c;font-size:11px;font-weight:700;font-style:normal}
.ypc-side-item.is-active .ypc-side-count{background:rgba(255,255,255,.16);color:#fff}
.ypc-side-caret{flex:0 0 auto;color:#9aa7b8}
.ypc-side-item.is-active .ypc-side-caret{color:#7fe6d8}
.ypc-side-sub{list-style:none;margin:6px 0 4px 15px;padding:5px 0 5px 14px;border-left:2px solid #e3ecf6;display:flex;flex-direction:column;gap:4px}
.ypc-side-sub-item a{display:flex;align-items:center;gap:8px;padding:9px 12px;border-radius:10px;background:#fff;border:1px solid #edf1f6;color:#5b6675;font-size:13.5px;font-weight:600;text-decoration:none;transition:all .3s}
.ypc-side-sub-item a:hover{border-color:#b9d3ec;background:#f4f9ff;color:#1a3a5c}
.ypc-side-sub-item.is-active a{background:linear-gradient(135deg,#00c2a8,#00a68f);border-color:transparent;color:#fff;box-shadow:0 6px 14px rgba(0,162,140,.18)}
.ypc-side-sub-dot{flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:#b9c6d8}
.ypc-side-sub-item:hover .ypc-side-sub-dot{background:#00a28c}
.ypc-side-sub-item.is-active .ypc-side-sub-dot{background:#fff}
.ypc-side-sub-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ypc-side-sub-count{flex:0 0 auto;font-size:11px;font-weight:700;color:#9aa7b8;font-style:normal}
.ypc-side-sub-item.is-active .ypc-side-sub-count{color:rgba(255,255,255,.85)}

/* ====== 筛选 ====== */
.ypc-filter-row{margin-bottom:18px}
.ypc-filter-row:last-of-type{margin-bottom:0}
.ypc-filter-label{display:block;font-size:13px;font-weight:700;color:#101a26;margin-bottom:10px}
.ypc-filter-values{display:flex;flex-wrap:wrap;gap:8px}
.ypc-filter-chip{padding:6px 13px;border:1px solid #e2e8ef;border-radius:99px;font-size:12.5px;font-weight:600;color:#3d4654;text-decoration:none;transition:all .3s}
.ypc-filter-chip:hover{border-color:#1a3a5c;color:#1a3a5c}
.ypc-filter-chip.is-active{background:#1a3a5c;border-color:#1a3a5c;color:#fff}
.ypc-filter-footer{border-top:1px solid #eef2f7;margin-top:18px;padding-top:14px}
.ypc-filter-clear{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:#8a94a6;text-decoration:none;transition:color .3s}
.ypc-filter-clear:hover{color:#1a3a5c}

/* ====== 介绍卡片 ====== */
.ypc-intro-text{font-size:14px;line-height:1.85;color:#5a6673}
.ypc-empty-text{color:#a6aebb}
.ypc-intro-params{margin-top:16px;border-top:1px solid #eef2f7;padding-top:14px;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.ypc-intro-param-item{background:#f7f9fc;border-radius:10px;padding:10px 12px}
.ypc-intro-param-label{display:block;font-size:12px;color:#8a94a6;margin-bottom:4px}
.ypc-intro-param-value{font-size:13.5px;font-weight:700;color:#101a26}
.ypc-intro-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.ypc-intro-tag{padding:6px 13px;border-radius:99px;background:rgba(0,194,168,.09);color:#0e5c50;font-size:12.5px;font-weight:600}
.ypc-sec-img{margin-bottom:16px;border-radius:12px;overflow:hidden}
.ypc-sec-img img{width:100%;display:block}
.ypc-sec-content{font-size:14px;line-height:1.85;color:#5a6673}

/* ====== 主内容 ====== */
.ypc-products-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px}
.ypc-products-title .ypc-eyebrow{margin-bottom:8px}
.ypc-products-title h2{margin:0;font-size:30px;font-weight:800;color:#101a26;line-height:1.3;letter-spacing:-.4px}
.ypc-products-meta{flex-shrink:0;font-size:14px;color:#5a6673;padding:9px 18px;border:1px solid #e2e8ef;border-radius:99px;background:#fff}
.ypc-products-meta b{color:#1a3a5c;font-size:18px;font-weight:800}

.ypc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ypc-card{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid #eef2f7;border-radius:16px;overflow:hidden;box-shadow:0 4px 18px rgba(16,26,38,.05);transition:transform .4s cubic-bezier(.4,0,.2,1),box-shadow .4s cubic-bezier(.4,0,.2,1),border-color .4s}
.ypc-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#1a3a5c,#00c2a8);transform:scaleX(0);transform-origin:left;transition:transform .4s cubic-bezier(.4,0,.2,1);z-index:2}
.ypc-card:hover{transform:translateY(-8px);border-color:transparent;box-shadow:0 22px 48px rgba(26,58,92,.16)}
.ypc-card:hover::before{transform:scaleX(1)}
.ypc-card-img{position:relative;aspect-ratio:4/3;background:linear-gradient(150deg,#eef3fb,#e4ecfa 55%,#f6f9ff);display:flex;align-items:center;justify-content:center;overflow:hidden}
.ypc-card-img img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply;display:block;transition:transform .55s cubic-bezier(.4,0,.2,1)}
.ypc-card:hover .ypc-card-img img{transform:scale(1.06)}
.ypc-card-ph{color:#b8c4d6}
.ypc-card-body{flex:1;display:flex;flex-direction:column;padding:20px 18px 18px}
.ypc-card-title{margin:0 0 14px;font-size:16.5px;line-height:1.4;font-weight:700}
.ypc-card-title a{color:#101a26;text-decoration:none;transition:color .3s;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ypc-card-title a:hover{color:#1a3a5c}
.ypc-card-params{display:flex;flex-direction:column;gap:8px;margin-bottom:14px}
.ypc-card-param{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 12px;background:#f7f9fc;border-radius:9px;font-size:12.5px}
.ypc-card-param span{color:#8a94a6}
.ypc-card-param strong{color:#101a26;font-weight:700;text-align:right}
.ypc-card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.ypc-card-tag{font-size:12px;font-weight:600;color:#1a3a5c;background:rgba(26,58,92,.07);padding:4px 10px;border-radius:6px}
.ypc-card-badges{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.ypc-badge{font-size:11px;font-weight:700;color:#fff;background:#101a26;padding:4px 10px;border-radius:5px;letter-spacing:.4px}
.ypc-badge.hot{background:#00a28c}
.ypc-card-foot{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:14px;border-top:1px solid #f1f4f8}
.ypc-card-more{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:700;color:#1a3a5c;text-decoration:none;transition:color .3s}
.ypc-card-more svg{width:15px;height:15px}
.ypc-card:hover .ypc-card-more{color:#00a28c}
.ypc-consult-btn{display:inline-flex;align-items:center;gap:6px;margin-left:auto;padding:8px 16px;border:none;border-radius:99px;background:linear-gradient(135deg,#1a3a5c,#2a5278);color:#fff;font-size:13px;font-weight:700;font-family:inherit;cursor:pointer;transition:transform .3s,box-shadow .3s}
.ypc-consult-btn svg{width:15px;height:15px}
.ypc-consult-btn:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(26,58,92,.3)}
.ypc-card-cover{position:absolute;inset:0;z-index:1}
.ypc-card-body,.ypc-card-img{position:relative;z-index:0}
.ypc-card:hover .ypc-card-img{filter:none}
.ypc-card-cover{z-index:1}
.ypc-card > *{position:relative;z-index:0}
.ypc-card-cover{position:absolute;inset:0;z-index:1}

/* ====== 空状态/分页 ====== */
.ypc-empty{text-align:center;padding:80px 20px;color:#8a94a6;background:#fff;border-radius:18px;border:1px solid #eef2f7}
.ypc-empty svg{margin:0 auto 18px;display:block;color:#cfd8e4}
.ypc-empty p{font-size:15px}
.ypc-pagination{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:44px;flex-wrap:wrap}
.ypc-pg-btn{min-width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;padding:0 12px;border:1px solid #e2e8ef;border-radius:10px;background:#fff;color:#101a26;font-size:14px;font-weight:600;text-decoration:none;transition:all .3s}
.ypc-pg-btn:hover{border-color:#1a3a5c;color:#1a3a5c;transform:translateY(-2px)}
.ypc-pg-btn.is-active{background:linear-gradient(135deg,#1a3a5c,#2a5278);border-color:#1a3a5c;color:#fff;box-shadow:0 8px 18px rgba(26,58,92,.22)}
.ypc-pg-btn.is-disabled{color:#c2cad6;pointer-events:none;background:#f5f7fa}
.ypc-pg-dots{color:#8a94a6;padding:0 4px}
.ypc-pg-info{margin-left:8px;font-size:13px;color:#5a6673}

/* ====== 全宽区块 ====== */
.ypc-block-section{background:#fff;padding:76px 0;border-top:1px solid #eef2f7}
.ypc-block-section--soft{background:#f6f9fc;border-top:none}
.ypc-section-head{text-align:center;margin-bottom:44px}
.ypc-section-head .ypc-eyebrow{margin-bottom:10px}
.ypc-section-title{margin:0;font-size:32px;font-weight:800;color:#101a26;letter-spacing:-.4px}
.ypc-block-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.ypc-block-card{display:flex;flex-direction:column;background:#fff;border:1px solid #eef2f7;border-radius:16px;overflow:hidden;text-decoration:none;color:inherit;box-shadow:0 4px 18px rgba(16,26,38,.05);transition:transform .4s cubic-bezier(.4,0,.2,1),box-shadow .4s}
.ypc-block-card:hover{transform:translateY(-8px);box-shadow:0 22px 48px rgba(26,58,92,.16)}
.ypc-block-media{aspect-ratio:16/10;background:linear-gradient(150deg,#eef3fb,#e4ecfa 55%,#f6f9ff);display:flex;align-items:center;justify-content:center;overflow:hidden}
.ypc-block-media img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply;display:block;transition:transform .55s}
.ypc-block-card:hover .ypc-block-media img{transform:scale(1.06)}
.ypc-block-ph{color:#b8c4d6}
.ypc-block-ph svg{width:48px;height:48px}
.ypc-block-body{padding:18px 18px 20px;display:flex;flex-direction:column}
.ypc-block-title{font-size:16px;line-height:1.4;font-weight:700;color:#101a26;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ypc-block-sum{font-size:13.5px;line-height:1.75;color:#5a6673;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.ypc-faq-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ypc-faq-card{background:#fff;border:1px solid #eef2f7;border-radius:16px;padding:26px;box-shadow:0 4px 18px rgba(16,26,38,.05);display:flex;flex-direction:column;transition:transform .4s,box-shadow .4s}
.ypc-faq-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(26,58,92,.12)}
.ypc-faq-card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;color:#00a28c}
.ypc-faq-card-num{font-size:26px;font-weight:800;color:#cfd8e4;line-height:1}
.ypc-faq-card-q{margin:0 0 12px;font-size:16.5px;line-height:1.45;font-weight:700;color:#101a26}
.ypc-faq-card-a{margin:0 0 16px;font-size:13.5px;line-height:1.8;color:#5a6673;flex:1}
.ypc-faq-card-more{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:700;color:#1a3a5c;text-decoration:none;transition:color .3s}
.ypc-faq-card-more:hover{color:#00a28c}

.ypc-kb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ypc-kb-card{display:flex;flex-direction:column;background:#fff;border:1px solid #eef2f7;border-radius:16px;padding:26px;text-decoration:none;color:inherit;box-shadow:0 4px 18px rgba(16,26,38,.05);transition:transform .4s,box-shadow .4s,border-color .4s}
.ypc-kb-card:hover{transform:translateY(-6px);border-color:transparent;box-shadow:0 18px 40px rgba(26,58,92,.12)}
.ypc-kb-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.ypc-kb-cat{font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:#00a28c;padding:4px 10px;background:rgba(0,194,168,.09);border-radius:6px}
.ypc-kb-date{font-size:12.5px;color:#a6aebb}
.ypc-kb-title{margin:0 0 12px;font-size:17px;line-height:1.45;font-weight:700;color:#101a26;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ypc-kb-summary{margin:0 0 18px;font-size:13.5px;line-height:1.8;color:#5a6673;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ypc-kb-arrow{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:700;color:#1a3a5c;transition:gap .3s}
.ypc-kb-card:hover .ypc-kb-arrow{gap:10px;color:#00a28c}

/* ====== 响应式 ====== */
@media(max-width:1280px){
  .ypc-main-grid{grid-template-columns:280px 1fr;gap:22px}
  .ypc-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:991px){
  .ypc-main-grid{grid-template-columns:1fr}
  .ypc-grid{grid-template-columns:repeat(2,1fr)}
  .ypc-block-grid,.ypc-faq-grid,.ypc-kb-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .ypc-hero{min-height:200px;padding:36px 0 46px}
  .ypc-hero-title{font-size:26px}
  .ypc-hero-sub{font-size:14px}
  .ypc-main-layout{padding:40px 0 66px}
  .ypc-card{padding:20px;border-radius:14px}
  .ypc-products-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:24px}
  .ypc-products-title h2{font-size:24px}
  .ypc-grid{grid-template-columns:1fr 1fr;gap:14px}
  .ypc-card-body{padding:14px 12px 12px}
  .ypc-card-title{font-size:14.5px}
  .ypc-card-param{font-size:12px;padding:7px 9px}
  .ypc-consult-btn{padding:7px 12px;font-size:12px}
  .ypc-block-section{padding:54px 0}
  .ypc-section-title{font-size:26px}
  .ypc-block-grid,.ypc-faq-grid,.ypc-kb-grid{grid-template-columns:1fr;gap:16px}
}