:root{
  --bg:#ffffff;
  --bg-soft:#f5f7fa;
  --bg-card:#ffffff;
  --line:#e6e9ed;
  --line-soft:#eef1f4;
  --ink:#1a1a1a;
  --ink-soft:#5a626c;
  --muted:#9aa1a9;
  --accent:#007efe;
  --accent-deep:#0066d6;
  --accent-soft:#e6f1ff;
  --wa:#25d366;
  --radius:8px;
  --maxw:1200px;
  --shadow:0 4px 18px rgba(0,0,0,.08);
  --shadow-hover:0 10px 30px rgba(0,126,254,.16);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:'Inter',-apple-system,'Segoe UI',Arial,'Microsoft YaHei',sans-serif;font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2,h3,h4{font-family:'Archivo','Inter',sans-serif;font-weight:800;letter-spacing:-.01em;line-height:1.15;color:var(--ink)}

.site-head{position:sticky;top:0;z-index:50;background:#fff;box-shadow:0 1px 0 var(--line)}
.head-top{background:#fff;border-bottom:1px solid var(--line-soft)}
.head-top-inner{display:flex;align-items:center;justify-content:space-between;height:50px}
.brand{font-family:'Archivo';font-weight:900;font-size:1.55rem;letter-spacing:-.03em;color:#1a1a1a;position:relative}
.brand .reg{color:var(--accent);font-size:.55em;vertical-align:super}
.brand::after{content:"";position:absolute;left:0;bottom:2px;width:74px;height:3px;background:var(--accent);border-radius:2px}
.head-contact{display:flex;gap:18px;align-items:center;font-size:.82rem;color:var(--ink-soft)}
.head-contact a{color:var(--accent);font-weight:600}
.head-contact .phone{font-weight:600;color:var(--ink)}
.mega-nav{background:var(--accent)}
.mega-bar{display:flex;align-items:stretch;list-style:none;min-height:48px;margin:0;padding:0}
.nav-item{position:relative;display:flex;align-items:stretch}
.nav-item>a{display:flex;align-items:center;gap:5px;padding:0 20px;font-size:.86rem;font-weight:600;color:#fff;white-space:nowrap;transition:.15s}
.nav-item>a .caret{font-size:.6rem;opacity:.85;transition:transform .2s}
.nav-item>a .home-link,.nav-item>a.home-link{font-weight:800}
.nav-item:hover>a{background:var(--accent-deep)}
.nav-item.has-mega:hover>a .caret{transform:rotate(180deg)}
/* mega 下拉面板 */
.mega-panel{position:absolute;top:100%;left:0;min-width:520px;background:#fff;border:1px solid var(--line);border-top:3px solid var(--accent);box-shadow:0 16px 40px rgba(0,0,0,.16);border-radius:0 0 var(--radius) var(--radius);opacity:0;visibility:hidden;transform:translateY(8px);transition:.18s;z-index:60}
.nav-item.has-mega:hover .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-panel-inner{display:flex;gap:30px;padding:22px 26px}
.mega-col{min-width:200px}
.mega-col h4{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--line-soft);font-family:'Inter';font-weight:700}
.mega-col ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:2px 18px}
.mega-col li a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:7px 10px;font-size:.84rem;color:var(--ink);border-radius:5px;transition:.13s;font-weight:500}
.mega-col li a:hover{background:var(--accent-soft);color:var(--accent)}
.mega-col li a em{font-style:normal;font-size:.7rem;color:var(--muted);background:var(--bg-soft);padding:1px 7px;border-radius:10px;font-weight:600}
.mega-col li a:hover em{background:#fff;color:var(--accent)}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:.9rem;font-weight:700;cursor:pointer;padding:13px 0;align-items:center;gap:6px}

.hero-slider{position:relative;background:#f0f3f7;overflow:hidden}
.slides{position:relative;width:100%}
.slide{display:none;width:100%}
.slide.active{display:block}
.slide a{display:block}
.slide img{width:100%;display:block}
.slider-dots{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:9px;z-index:5}
.slider-dots button{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.55);border:none;cursor:pointer;padding:0;transition:.2s}
.slider-dots button.on{background:#fff;width:28px;border-radius:6px}
.slider-arrow{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.85);border:none;width:46px;height:46px;border-radius:50%;cursor:pointer;font-size:1.3rem;color:var(--ink);z-index:5;transition:.18s;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow)}
.slider-arrow:hover{background:#fff;color:var(--accent)}
.slider-arrow.prev{left:18px}.slider-arrow.next{right:18px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:.9rem;padding:12px 26px;border-radius:var(--radius);transition:.18s;cursor:pointer;border:2px solid transparent}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-ghost{border-color:var(--accent);color:var(--accent);background:#fff}
.btn-ghost:hover{background:var(--accent);color:#fff}
.btn-wa{background:var(--wa);color:#fff}
.btn-wa:hover{filter:brightness(1.06);transform:translateY(-2px)}
.btn-mail{background:var(--accent);color:#fff}
.btn-mail:hover{background:var(--accent-deep);transform:translateY(-2px)}

.feature-bar{background:var(--bg-soft);border-bottom:1px solid var(--line)}
.feature-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.feat{display:flex;align-items:center;gap:12px;padding:20px 18px;border-right:1px solid var(--line)}
.feat:last-child{border-right:none}
.feat .ico{width:38px;height:38px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0;font-weight:800}
.feat b{font-size:.85rem;display:block;color:var(--ink)}
.feat span{font-size:.74rem;color:var(--muted)}

.cat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:32px auto}
.cat-tile{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;display:flex;flex-direction:column;gap:3px;transition:.18s}
.cat-tile:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.cat-tile span{font-family:'Archivo';font-weight:700;font-size:.95rem;color:var(--ink)}
.cat-tile em{color:var(--accent);font-style:normal;font-size:.76rem;font-weight:600}

.section{padding:44px 0}
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;border-bottom:2px solid var(--line)}
.section-head h2{font-size:1.5rem;position:relative;padding-bottom:14px}
.section-head h2::after{content:"";position:absolute;left:0;bottom:-2px;width:60px;height:3px;background:var(--accent)}
.section-head .more{font-size:.82rem;color:var(--accent);font-weight:600}

.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.card:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.card-img{aspect-ratio:1;background:#fff;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:.4s}
.card:hover .card-img img{transform:scale(1.05)}
.card-body{padding:13px 14px 15px;display:flex;flex-direction:column;gap:7px;flex:1}
.card-title{font-weight:500;font-size:.84rem;line-height:1.4;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.3em}
.card-price{font-family:'Archivo';font-weight:800;color:var(--accent);font-size:1.1rem;margin-top:auto}
.card-price.muted{color:var(--muted);font-size:.82rem;font-weight:600}

.page-head{padding:30px 0 6px}
.page-head h1{font-size:1.9rem;margin:8px 0 4px}
.crumb{font-size:.8rem;color:var(--muted)}
.crumb a{color:var(--accent)}
.muted{color:var(--muted)}

.pdp{padding:28px 0 50px}
.pdp .crumb{margin-bottom:20px}
.pdp-grid{display:grid;grid-template-columns:1fr 1fr;gap:42px;margin-bottom:44px}
.pdp-main{background:#fff;border-radius:var(--radius);overflow:hidden;aspect-ratio:1;border:1px solid var(--line)}
.pdp-main img{width:100%;height:100%;object-fit:contain}
.pdp-thumbs{display:flex;gap:9px;margin-top:12px;flex-wrap:wrap}
.thumb{width:64px;height:64px;object-fit:cover;border-radius:6px;border:2px solid var(--line);cursor:pointer;background:#fff;transition:.15s}
.thumb:hover,.thumb.active{border-color:var(--accent)}
.pdp-info h1{font-size:1.55rem;margin-bottom:16px;line-height:1.25}
.pdp-price{font-family:'Archivo';font-weight:900;font-size:2rem;color:var(--accent);margin-bottom:6px}
.pdp-price.muted{color:var(--ink-soft);font-size:1.05rem;font-weight:700}
.pdp-sku{color:var(--muted);font-size:.82rem;margin-bottom:22px}
.pdp-cta{display:flex;gap:11px;flex-wrap:wrap;margin-bottom:24px}
.pdp-trust{display:flex;flex-direction:column;gap:9px;color:var(--ink-soft);font-size:.88rem;border-top:1px solid var(--line);padding-top:20px}
.pdp-trust span{display:flex;align-items:center;gap:8px}
.pdp-trust .ck{color:var(--accent);font-weight:800}
.pdp-desc{border-top:1px solid var(--line);padding-top:32px;margin-bottom:42px}
.pdp-desc h2{font-size:1.3rem;margin-bottom:16px}
.desc-body{color:#3a4049;max-width:840px}
.desc-body ul{margin:12px 0 12px 20px}
.desc-body li{margin-bottom:7px}
.desc-body img{border-radius:6px;margin:14px 0;border:1px solid var(--line)}
.desc-body h1,.desc-body h2,.desc-body h3,.desc-body h4{color:var(--ink);margin:16px 0 9px}
.desc-body p{margin-bottom:11px}
.desc-body table{width:100%;border-collapse:collapse;margin:14px 0}
.desc-body td,.desc-body th{border:1px solid var(--line);padding:8px 10px;font-size:.86rem}

.site-foot{background:#1a1d23;color:#b8bec6;margin-top:36px;padding:46px 0 0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:38px;padding-bottom:36px}
.foot-brand{font-family:'Archivo';font-weight:900;font-size:1.4rem;margin-bottom:11px;color:#fff}
.foot-brand .reg{color:var(--accent);font-size:.6em;vertical-align:super}
.foot-tag{color:#8b929b;font-size:.88rem;margin-bottom:13px;max-width:320px}
.foot-contact a{color:var(--accent);font-weight:600}
.site-foot h4{font-size:.92rem;margin-bottom:13px;color:#fff}
.site-foot ul{list-style:none}
.site-foot li{margin-bottom:7px}
.site-foot li a{color:#8b929b;font-size:.85rem;transition:.15s}
.site-foot li a:hover{color:var(--accent)}
.foot-bar{border-top:1px solid #2a2e36;padding:16px 0;color:#6b727b;font-size:.8rem}

@media(max-width:980px){
  .grid,.cat-strip,.feature-inner{grid-template-columns:repeat(2,1fr)}
  .feat:nth-child(2){border-right:none}
  .pdp-grid{grid-template-columns:1fr;gap:26px}
  .foot-grid{grid-template-columns:1fr}
}
@media(max-width:860px){
  .nav-toggle{display:flex}
  .mega-bar{display:none;flex-direction:column;width:100%}
  body.nav-open .mega-bar{display:flex}
  .nav-item{flex-direction:column;border-bottom:1px solid rgba(255,255,255,.12)}
  .nav-item>a{padding:13px 0}
  .mega-panel{position:static;min-width:0;width:100%;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;border-top:none;background:rgba(255,255,255,.07);border-radius:0;display:none}
  .nav-item.has-mega.open .mega-panel{display:block}
  .mega-panel-inner{flex-direction:column;padding:6px 14px}
  .mega-col h4{color:rgba(255,255,255,.7);border-color:rgba(255,255,255,.15)}
  .mega-col ul{grid-template-columns:1fr}
  .mega-col li a{color:#fff}
  .mega-col li a em{background:rgba(255,255,255,.15);color:#fff}
  .head-contact .phone{display:none}
}
@media(max-width:680px){
  .grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .slider-arrow{display:none}
}