:root{
  --steel:#0B3D91;
  --steel-dark:#061f4d;
  --steel-deep:#020c20;
  --orange:#FF6B00;
  --orange-bright:#ff8a3d;
  --gold:#ffc24b;
  --ink:#16202c;
  --muted:#5b6776;
  --bg:#f4f6fa;
  --line:#e3e8ef;
  --white:#fff;
  --shadow-lg:0 24px 60px rgba(4,22,58,.28);
  --radius:18px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;
  -webkit-font-smoothing:antialiased;font-weight:400;overflow-x:hidden;
}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
a{color:inherit;text-decoration:none}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(2,12,32,.82);
  backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,138,61,.18);
  transition:.3s}
.site-header.scrolled{background:rgba(2,12,32,.96);box-shadow:0 8px 30px rgba(0,0,0,.4)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{color:#fff;font-size:25px;font-weight:900;letter-spacing:1px;
  text-shadow:0 0 18px rgba(255,107,0,.35)}
.brand span{color:var(--orange);text-shadow:0 0 18px rgba(255,107,0,.55)}
.nav nav{display:flex;gap:26px;align-items:center}
.nav nav a{color:#dbe6f7;font-size:15px;font-weight:500;position:relative;padding:4px 0;transition:.2s}
.nav nav a:not(.cta)::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--orange);transition:.25s}
.nav nav a:not(.cta):hover{color:#fff}
.nav nav a:not(.cta):hover::after{width:100%}
.nav .cta{background:linear-gradient(135deg,var(--orange),var(--orange-bright));color:#fff;
  padding:11px 20px;border-radius:10px;font-weight:800;box-shadow:0 8px 22px rgba(255,107,0,.4);
  transition:.2s}
.nav .cta:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(255,107,0,.55)}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:var(--steel-deep);color:#fff;
  min-height:92vh;display:flex;align-items:center;padding:120px 0 90px}
.hero-bg{position:absolute;inset:0;background:url("assets/hero-bg.svg") center/cover no-repeat;
  opacity:.95;transform:scale(1.04);animation:heroZoom 18s ease-in-out infinite alternate}
@keyframes heroZoom{from{transform:scale(1.02)}to{transform:scale(1.1)}}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:90px;
  background:var(--bg);clip-path:polygon(0 100%,0 38%,100% 100%);z-index:3}
.hero-glow{position:absolute;top:-10%;right:-5%;width:60vw;height:60vw;
  background:radial-gradient(circle,rgba(255,107,0,.28),transparent 60%);filter:blur(20px);z-index:1}
.hero-inner{position:relative;z-index:4;max-width:1000px}
.hero-tag{display:inline-block;background:rgba(255,107,0,.16);
  border:1px solid rgba(255,138,61,.7);color:#ffd9b8;font-size:14px;font-weight:700;
  letter-spacing:2px;padding:8px 18px;border-radius:999px;margin-bottom:22px;
  box-shadow:0 0 24px rgba(255,107,0,.25)}
.hero h1{font-size:clamp(38px,5.4vw,66px);font-weight:900;letter-spacing:-1.5px;line-height:1.08;white-space:nowrap;word-break:keep-all;
  text-shadow:0 6px 30px rgba(0,0,0,.45)}
.hero h1 .hl{color:var(--orange);text-shadow:0 0 30px rgba(255,107,0,.6)}
.hero .sub{font-size:clamp(18px,2.4vw,24px);color:#ffd9b8;margin-top:18px;font-weight:700;letter-spacing:1px}
.hero .lead{margin-top:20px;font-size:18px;color:#dbe6f7;max-width:720px;font-weight:400}
.hero-cta{margin-top:38px;display:flex;gap:18px;flex-wrap:wrap}
.btn{padding:16px 34px;border-radius:12px;font-weight:800;font-size:17px;display:inline-block;
  transition:.2s;cursor:pointer}
.btn.primary{background:linear-gradient(135deg,var(--orange),var(--orange-bright));color:#fff;
  box-shadow:0 12px 32px rgba(255,107,0,.45);position:relative;overflow:hidden}
.btn.primary:hover{transform:translateY(-3px);box-shadow:0 18px 42px rgba(255,107,0,.6)}
.btn.ghost{border:1.8px solid rgba(255,255,255,.55);color:#fff}
.btn.ghost:hover{border-color:var(--orange);background:rgba(255,107,0,.12);transform:translateY(-3px)}

/* ===== Trust bar ===== */
.trust-bar{background:linear-gradient(90deg,var(--steel-dark),var(--steel));color:#fff;
  padding:22px 0;box-shadow:0 10px 30px rgba(4,22,58,.25);position:relative;z-index:5}
.trust-row{display:flex;flex-wrap:wrap;justify-content:center;gap:14px 46px;text-align:center}
.trust-item{display:flex;align-items:center;gap:11px;font-weight:800;font-size:16px;letter-spacing:.5px}
.trust-item .ti{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,107,0,.18);border:1px solid rgba(255,138,61,.5);font-size:18px}
.trust-item b{color:var(--orange-bright)}

/* ===== Stats ===== */
.stats{background:linear-gradient(90deg,#04163a,#0B3D91);color:#fff;padding:54px 0;position:relative;overflow:hidden}
.stats::before{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 20% 0,rgba(255,107,0,.15),transparent 40%)}
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center;position:relative}
.stat{padding:8px 10px;border-right:1px solid rgba(255,255,255,.1)}
.stat:last-child{border-right:none}
.stat b{display:block;font-size:clamp(34px,4.5vw,56px);font-weight:900;line-height:1;
  background:linear-gradient(180deg,#ffd9b8,var(--orange));-webkit-background-clip:text;
  background-clip:text;-webkit-text-fill-color:transparent;
  filter:drop-shadow(0 3px 12px rgba(255,107,0,.4))}
.stat span{display:block;margin-top:10px;font-size:14px;color:#c7d6ee;letter-spacing:1px}

/* ===== Sections ===== */
.section{padding:84px 0}
.section.alt{background:#eef2f7}
.section h2{font-size:clamp(28px,3.6vw,40px);font-weight:900;color:var(--steel-dark);text-align:center;
  letter-spacing:-.5px;position:relative;padding-bottom:18px}
.section h2::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:72px;height:5px;border-radius:3px;background:linear-gradient(90deg,var(--orange),var(--orange-bright))}
.section-sub{text-align:center;color:var(--muted);margin-top:16px;margin-bottom:48px;font-size:17px}

/* ===== Cards (industrial cut corner) ===== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cards.three{grid-template-columns:repeat(3,1fr)}
.card{background:var(--white);border-radius:var(--radius);padding:0 0 24px;overflow:hidden;
  transition:.28s;box-shadow:0 6px 20px rgba(11,61,145,.08);position:relative;
  clip-path:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,0 100%)}
.card::before{content:"";position:absolute;top:0;right:0;width:22px;height:22px;
  background:var(--orange);clip-path:polygon(100% 0,0 0,100% 100%)}
.card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:#c7d6ee}
.card .thumb{height:180px;background:linear-gradient(135deg,#eef3fb,#dfe9f7);
  display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--line)}
.card .thumb img{width:100%;height:100%;object-fit:contain;padding:14px;transition:.3s}
.card:hover .thumb img{transform:scale(1.06)}
.card h3{color:var(--steel);font-size:21px;margin:22px 24px 12px;font-weight:800;position:relative;padding-left:15px}
.card h3::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:5px;
  background:linear-gradient(180deg,var(--orange),var(--orange-bright));border-radius:3px}
.card p{color:var(--muted);font-size:15px;margin:0 24px}
.cat-brands{color:var(--orange)!important;font-weight:800;font-size:14.5px!important;letter-spacing:.5px}

/* 产品中心 hub：整卡可点、干净大气、一行五类 */
.cat-grid{grid-template-columns:repeat(auto-fit,minmax(185px,1fr));gap:18px}
.cat-card{display:flex;flex-direction:column;color:inherit;text-decoration:none;padding-bottom:22px}
.cat-card .cat-more{margin-top:auto;padding-top:14px;color:var(--orange);font-weight:800;font-size:14px;letter-spacing:.5px}
.cat-card:hover .cat-more{text-decoration:underline}
.cat-foot{text-align:center;margin-top:38px;font-size:16px;color:var(--muted)}
.cat-foot a{color:var(--orange);font-weight:800}

/* 收尾 CTA 条（简洁大气，不堆卡片） */
.cta-final{text-align:center}
.cta-final .section-sub{margin-bottom:30px}
.cta-final .hero-cta{justify-content:center}

/* Icon cards (services) */
.icon-cards{grid-template-columns:repeat(3,1fr)}
.icon-card{text-align:center;padding-top:30px;clip-path:none}
.icon-card::before{display:none}
.icon-card .ico{width:110px;height:110px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;
  border-radius:24px;background:linear-gradient(135deg,#eaf1fc,#dbe7f8);box-shadow:0 8px 22px rgba(11,61,145,.12);
  transition:.28s}
.icon-card:hover .ico{transform:translateY(-6px);box-shadow:0 14px 30px rgba(255,107,0,.25);
  background:linear-gradient(135deg,#fff,#fff2e6)}
.icon-card .ico img{width:62%;height:62%}
.icon-card h3{padding-left:0;text-align:center}
.icon-card h3::before{display:none}
.icon-card p{margin:0 26px}

/* ===== Brand wall ===== */
.brand-wall{background:var(--steel-deep);color:#fff;position:relative;overflow:hidden}
.brand-wall::before{content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 80% 10%,rgba(255,107,0,.18),transparent 50%)}
.brand-wall h2{color:#fff}
.brand-wall h2::after{background:linear-gradient(90deg,var(--orange),var(--gold))}
.brand-wall .section-sub{color:#bcd0ee}
.brand-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.brand-logo{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  border-radius:14px;padding:26px 16px;text-align:center;transition:.25s;
  display:flex;flex-direction:column;align-items:center;gap:8px}
.brand-logo:hover{border-color:var(--orange);background:rgba(255,107,0,.12);transform:translateY(-4px);
  box-shadow:0 12px 30px rgba(255,107,0,.25)}
.brand-logo .bl-name{font-size:20px;font-weight:900;letter-spacing:1px;color:#fff}
.brand-logo .bl-cat{font-size:13px;color:#9fc0ff;letter-spacing:.5px}
.brand-logo .bl-dot{width:34px;height:4px;border-radius:2px;background:linear-gradient(90deg,var(--orange),var(--gold))}

/* ===== Area ===== */
.area-list{list-style:none;max-width:720px;margin:0 auto;display:grid;gap:14px}
.area-list li{background:#fff;border-left:5px solid var(--orange);padding:16px 22px;border-radius:10px;
  font-size:16px;color:var(--ink);box-shadow:0 4px 14px rgba(11,61,145,.06);transition:.2s}
.area-list li:hover{transform:translateX(6px);box-shadow:0 8px 20px rgba(11,61,145,.12)}

/* ===== FAQ ===== */
.faq{max-width:800px;margin:0 auto;display:grid;gap:14px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 22px;
  box-shadow:0 4px 14px rgba(11,61,145,.05);transition:.2s}
.faq details[open]{border-color:rgba(255,107,0,.4);box-shadow:0 10px 28px rgba(255,107,0,.12)}
.faq summary{cursor:pointer;font-weight:800;color:var(--steel-dark);font-size:17px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+";color:var(--orange);font-weight:900;margin-right:12px;font-size:20px}
.faq details[open] summary::before{content:"−"}
.faq p{margin-top:12px;color:var(--muted);font-size:15px}

/* ===== Contact ===== */
.contact{background:var(--steel-deep);color:#fff;position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 15% 20%,rgba(255,107,0,.18),transparent 45%)}
.contact h2{color:#fff}
.contact h2::after{background:linear-gradient(90deg,var(--orange),var(--gold))}
.contact .section-sub{color:#bcd0ee}
.contact-box{margin:0 auto;max-width:600px;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.18);border-radius:20px;padding:40px;text-align:center;
  position:relative;backdrop-filter:blur(4px)}
.contact-box p{font-size:17px;margin:12px 0}
.contact-box .phone{font-size:clamp(28px,4vw,38px);font-weight:900;
  background:linear-gradient(180deg,#ffd9b8,var(--orange));-webkit-background-clip:text;
  background-clip:text;-webkit-text-fill-color:transparent;filter:drop-shadow(0 3px 12px rgba(255,107,0,.4))}
.contact-box a{color:var(--orange-bright)}

/* ===== Footer ===== */
.site-footer{background:var(--steel-deep);color:#9fb4d6;padding:36px 0;text-align:center;font-size:14px;
  border-top:1px solid rgba(255,255,255,.08)}
.site-footer .muted{color:#6f86ad;margin-top:8px;font-size:13px;line-height:1.9}

/* ===== Scroll reveal ===== */
.js .reveal{opacity:0;transform:translateY(34px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}
.js .reveal.d1{transition-delay:.08s}.js .reveal.d2{transition-delay:.16s}
.js .reveal.d3{transition-delay:.24s}.js .reveal.d4{transition-delay:.32s}
.js .reveal.d5{transition-delay:.4s}.js .reveal.d6{transition-delay:.48s}

@media(prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none}
  .hero-bg{animation:none}
}

@media(max-width:880px){
  .cards,.cards.three,.icon-cards,.brand-grid{grid-template-columns:1fr}
  .stats-row{grid-template-columns:repeat(2,1fr);gap:26px}
  .stat{border-right:none}
  .stat:nth-child(odd){border-right:1px solid rgba(255,255,255,.1)}
  .hero{min-height:auto;padding:96px 0 70px}
  .hero h1{font-size:30px;white-space:normal;letter-spacing:-1px}
  .nav nav{gap:12px}
  .nav nav a:not(.cta){display:none}
  .section{padding:60px 0}
  .trust-row{gap:14px 22px}
  .trust-item{font-size:14px}
}

/* ===== 产品分类导航条（更清晰的分类） ===== */
.cat-tabs{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:70px;z-index:40;
  box-shadow:0 6px 18px rgba(11,61,145,.06)}
.cat-tabs .wrap{display:flex;gap:8px;overflow-x:auto;padding:12px 20px;-webkit-overflow-scrolling:touch}
.cat-tabs a{flex:0 0 auto;padding:10px 20px;border-radius:999px;font-weight:700;font-size:15px;
  color:var(--steel);background:#eef3fb;border:1px solid transparent;transition:.2s;white-space:nowrap}
.cat-tabs a:hover{background:#e2ebf8;transform:translateY(-1px)}
.cat-tabs a.active{background:linear-gradient(135deg,var(--orange),var(--orange-bright));color:#fff;
  box-shadow:0 8px 20px rgba(255,107,0,.35)}

/* ===== 底部导航地图窗口（点击地图开始导航） ===== */
.map-nav{background:linear-gradient(135deg,#04163a,#0B3D91);color:#fff;position:relative;overflow:hidden}
.map-nav::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% 15%,rgba(255,107,0,.16),transparent 50%)}
.map-nav h2{color:#fff}
.map-nav h2::after{background:linear-gradient(90deg,var(--orange),var(--gold))}
.map-nav .section-sub{color:#bcd0ee}
.mapnav-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:28px;align-items:stretch;position:relative}
.map-window{display:block;position:relative;border-radius:20px;overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.45);border:1px solid rgba(255,255,255,.12);
  min-height:390px;cursor:pointer;background:#dfe7f0;transition:.25s}
.map-window:hover{transform:translateY(-4px);box-shadow:0 30px 70px rgba(0,0,0,.55)}
.map-svg{position:absolute;inset:0;width:100%;height:100%;display:block}
.map-pin{position:absolute;left:50%;top:46%;transform:translate(-50%,-100%);z-index:3;text-align:center;pointer-events:none}
.map-pin .dot{display:block;width:26px;height:26px;border-radius:50% 50% 50% 0;background:var(--orange);
  transform:rotate(-45deg);margin:0 auto;box-shadow:0 6px 16px rgba(255,107,0,.6);border:3px solid #fff}
.map-pin .pulse{position:absolute;left:50%;top:13px;width:26px;height:26px;border-radius:50%;
  background:rgba(255,107,0,.5);transform:translate(-50%,-50%);animation:pulse 2s infinite}
@keyframes pulse{0%{transform:translate(-50%,-50%) scale(1);opacity:.6}70%{transform:translate(-50%,-50%) scale(3.2);opacity:0}100%{opacity:0}}
.map-pin .label{display:inline-block;margin-top:12px;background:#fff;color:var(--steel-dark);font-weight:800;font-size:13px;
  padding:6px 12px;border-radius:999px;box-shadow:0 6px 16px rgba(0,0,0,.25);white-space:nowrap}
.map-hint{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);z-index:4;
  background:rgba(2,12,32,.78);color:#ffd9b8;font-weight:800;font-size:14px;padding:10px 18px;
  border-radius:999px;border:1px solid rgba(255,138,61,.6);backdrop-filter:blur(4px);
  box-shadow:0 8px 22px rgba(0,0,0,.35)}
.map-info{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);border-radius:20px;
  padding:30px 28px;display:flex;flex-direction:column;gap:14px;justify-content:center;position:relative;backdrop-filter:blur(4px)}
.map-info h3{font-size:22px;font-weight:900;color:#fff;margin-bottom:2px}
.map-info .mi-addr,.map-info .mi-time,.map-info .mi-tel{font-size:15px;color:#dbe6f7;line-height:1.6}
.map-info .mi-tel a{color:var(--orange-bright);font-weight:800}
.mi-note{font-size:12.5px;color:#9fb4d6;line-height:1.7;margin-top:2px}

@media(max-width:880px){
  .mapnav-grid{grid-template-columns:1fr;gap:18px}
  .map-window{min-height:300px}
  .cat-tabs{top:64px}
}

/* ===== 爆品徽标（袋装砂） ===== */
.badge-hot{display:inline-block;background:linear-gradient(135deg,#ff6b00,#ff8a3d);
  color:#fff;font-weight:900;font-size:12px;letter-spacing:.5px;padding:5px 12px;
  border-radius:999px;box-shadow:0 4px 12px rgba(255,107,0,.4);margin-left:8px;vertical-align:2px;
  animation:hotPulse 2.2s ease-in-out infinite}
@keyframes hotPulse{0%,100%{box-shadow:0 4px 12px rgba(255,107,0,.4)}50%{box-shadow:0 4px 22px rgba(255,107,0,.75)}}
.card-hot{border:2px solid rgba(255,107,0,.35);box-shadow:0 10px 28px rgba(255,107,0,.14)}
.card-hot:hover{box-shadow:0 18px 40px rgba(255,107,0,.28)}

/* ===== 爆品横幅（首页 hero 下大卡） ===== */
.hot-banner{position:relative;border-radius:22px;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,#04163a,#0B3D91);box-shadow:0 24px 60px rgba(4,22,58,.3);
  display:grid;grid-template-columns:1.1fr 1fr;min-height:360px}
.hot-banner::before{content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 85% 10%,rgba(255,107,0,.22),transparent 50%)}
.hot-banner .hb-photo{position:relative;min-height:320px}
.hot-banner .hb-photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hot-banner .hb-body{position:relative;z-index:2;padding:44px 40px;display:flex;flex-direction:column;justify-content:center}
.hot-banner .hb-tag{display:inline-block;width:max-content;background:linear-gradient(135deg,#ff6b00,#ff8a3d);
  color:#fff;font-weight:900;font-size:14px;letter-spacing:2px;padding:8px 18px;border-radius:999px;
  box-shadow:0 8px 20px rgba(255,107,0,.45)}
.hot-banner h3{font-size:clamp(26px,3.4vw,38px);font-weight:900;color:#fff;margin:18px 0 6px;line-height:1.2}
.hot-banner .hb-sub{color:#ffd9b8;font-size:17px;font-weight:700;margin-bottom:14px}
.hot-banner .hb-desc{color:#dbe6f7;font-size:15px;line-height:1.8;margin-bottom:22px}
.hot-banner .hb-cta{display:flex;gap:14px;flex-wrap:wrap}
.hot-banner .btn.ghost{border-color:rgba(255,255,255,.5);color:#fff}
.hot-banner .btn.ghost:hover{background:rgba(255,255,255,.12)}

/* ===== 卖点特性（数量足 / 质量好） ===== */
.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.feat{background:#fff;border-radius:16px;padding:26px 26px 24px;box-shadow:0 6px 20px rgba(11,61,145,.08);
  border-left:6px solid var(--orange);transition:.25s}
.feat:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(11,61,145,.14)}
.feat .feat-title{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:900;color:var(--steel-dark)}
.feat .feat-title .feat-ico{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#ff6b00,#ff8a3d);font-size:22px;box-shadow:0 6px 16px rgba(255,107,0,.3)}
.feat p{color:var(--muted);font-size:15px;margin-top:12px;line-height:1.8}
.feat ul{list-style:none;margin-top:12px;display:grid;gap:8px}
.feat li{color:var(--ink);font-size:15px;padding-left:24px;position:relative}
.feat li::before{content:"✓";position:absolute;left:0;top:0;color:var(--orange);font-weight:900}

/* ===== 实拍图墙 ===== */
.photo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.photo-cell{position:relative;border-radius:16px;overflow:hidden;background:#e9eef7;
  aspect-ratio:4/3;box-shadow:0 8px 22px rgba(11,61,145,.1);transition:.28s}
.photo-cell img{width:100%;height:100%;object-fit:cover;display:block;transition:.4s}
.photo-cell:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(11,61,145,.18)}
.photo-cell:hover img{transform:scale(1.04)}
.photo-cell figcaption{position:absolute;left:0;right:0;bottom:0;padding:22px 16px 12px;color:#fff;
  font-size:14px;font-weight:700;background:linear-gradient(transparent,rgba(2,12,32,.82))}
.photo-cell.photo-main{grid-column:span 2;grid-row:span 2;aspect-ratio:auto;min-height:100%}

/* ===== 规格表 ===== */
.spec-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.spec-item{background:#fff;border-radius:14px;padding:20px;text-align:center;box-shadow:0 6px 18px rgba(11,61,145,.07)}
.spec-item .si-label{font-size:13px;color:var(--muted);letter-spacing:1px}
.spec-item .si-val{font-size:19px;font-weight:900;color:var(--steel-dark);margin-top:6px}

/* ===== 页头徽章行（爆品页 hero 下） ===== */
.hot-strip{background:linear-gradient(90deg,#ff6b00,#ff8a3d);color:#fff;padding:14px 0;text-align:center;
  font-weight:800;font-size:16px;letter-spacing:1px;box-shadow:0 8px 24px rgba(255,107,0,.3)}

@media(max-width:880px){
  .hot-banner{grid-template-columns:1fr}
  .hot-banner .hb-photo{min-height:230px}
  .hot-banner .hb-body{padding:32px 24px}
  .feat-grid{grid-template-columns:1fr}
  .photo-grid{grid-template-columns:1fr}
  .photo-cell.photo-main{grid-column:auto;grid-row:auto;min-height:240px}
}