:root{
  --navy:#0b1f38;
  --navy2:#15365c;
  --sky:#5dade2;
  --sky-light:#d6eaf8;
  --amber:#f5a623;
  --bg:#f4f7fb;
  --card:#ffffff;
  --text:#1a2a3a;
  --muted:#5a6a7d;
  --line:#e1e7ef;
  /* 统一的深蓝渐变 —— banner 与底部联系我们共用，首尾呼应 */
  --hero-grad:linear-gradient(135deg,#0b1f38 0%,#15365c 55%,#21588c 100%);
}
*{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Poppins',-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;}
a{text-decoration:none;color:inherit;}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px;}

/* Header */
header{position:sticky;top:0;z-index:50;background:rgba(11,31,56,.96);backdrop-filter:blur(8px);}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:22px;letter-spacing:.5px;}
.brand .dot{width:12px;height:12px;border-radius:50%;background:var(--sky);display:inline-block;}
.brand small{font-size:11px;color:#9db3d3;font-weight:500;margin-left:4px;letter-spacing:0;}
.nav-links{display:flex;gap:28px;}
.nav-links a{color:#c7d6ea;font-size:15px;font-weight:500;transition:.2s;}
.nav-links a:hover{color:#fff;}
.nav-cta{display:none;background:var(--sky);color:#082038;padding:8px 18px;border-radius:6px;font-weight:600;font-size:14px;}

/* Contact strip */
.contact-strip{background:#fff;border-bottom:1px solid var(--line);padding:16px 0;}
.contact-row{display:flex;gap:28px;flex-wrap:wrap;justify-content:center;font-size:15px;color:var(--muted);}
.contact-row a{color:var(--navy2);font-weight:600;}
.contact-row a:hover{color:var(--sky);}
.contact-row span{display:flex;align-items:center;gap:6px;}

/* Hero — 顶部品牌主色横幅（与底部联系我们共用同一渐变，首尾呼应） */
.hero{
  background:var(--hero-grad);
  padding:90px 0 88px;
  position:relative;
  overflow:hidden;
}
/* 装饰：右上角天蓝光晕 */
.hero::before{
  content:"";
  position:absolute;
  top:-120px;right:-100px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(93,173,226,.35) 0%,rgba(93,173,226,0) 70%);
  pointer-events:none;
}
/* 装饰：左下角第二层天蓝光斑（冷色统一，去掉暖黄） */
.hero::after{
  content:"";
  position:absolute;
  bottom:-150px;left:-80px;
  width:340px;height:340px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(93,173,226,.16) 0%,rgba(93,173,226,0) 70%);
  pointer-events:none;
}
.hero-wrap, .hero .wrap{position:relative;z-index:1;max-width:780px;}
.hero h1{color:#fff;font-size:42px;font-weight:700;letter-spacing:-.3px;line-height:1.2;}
.hero-sub{color:rgba(255,255,255,.88);font-size:18px;margin-top:14px;font-weight:500;}
.hero-desc{color:rgba(255,255,255,.7);font-size:15px;margin-top:6px;}
.hero-btns{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap;}
/* Hero 按钮：统一天蓝主按钮 + 白色描边次按钮（与全站一致，去掉琥珀黄） */
.hero .btn-primary{background:var(--sky);color:var(--navy);}
.hero .btn-primary:hover{background:#7fc5f0;color:var(--navy);}
.hero .btn-ghost{border:2px solid rgba(255,255,255,.7);color:#fff;background:transparent;}
.hero .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.sec-head{text-align:center;margin-bottom:44px;}
.sec-head h2{font-size:32px;font-weight:700;}
.sec-head p{color:var(--muted);margin-top:8px;font-size:16px;}

/* Categories grid */
.cat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}
.cat-card{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 4px 16px rgba(11,31,56,.05);transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column;}
.cat-card:hover{transform:translateY(-5px);box-shadow:0 12px 30px rgba(11,31,56,.12);}
.cat-img{height:200px;background:#f0f4f8;display:flex;align-items:center;justify-content:center;overflow:hidden;padding:14px;}
.cat-img img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;transition:transform .35s;}
.cat-card:hover .cat-img img{transform:scale(1.04);}
.cat-body{padding:18px 18px 20px;text-align:center;flex:1;display:flex;flex-direction:column;justify-content:center;}
.cat-body h3{font-size:17px;font-weight:700;margin-bottom:4px;}
.cat-body .en{font-size:13px;color:var(--sky);font-weight:600;text-transform:uppercase;letter-spacing:.4px;}
.cat-body .tag{display:inline-block;margin-top:10px;font-size:12px;color:var(--muted);background:var(--sky-light);padding:4px 10px;border-radius:20px;}

/* Why */
.why{background:#fff;border-top:1px solid var(--line);}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:10px;}
.why-card{padding:24px;border:1px solid var(--line);border-radius:12px;text-align:center;}
.why-card .ic{width:46px;height:46px;border-radius:12px;background:var(--sky-light);color:var(--navy2);display:flex;align-items:center;justify-content:center;font-size:22px;margin:0 auto 14px;font-weight:700;}
.why-card h4{font-size:16px;font-weight:600;}
.why-card p{color:var(--muted);font-size:14px;margin-top:6px;}

/* Contact — 与顶部 banner 共用同一深蓝渐变，首尾呼应；强调色统一为天蓝 */
.contact{
  background:var(--hero-grad);
  color:#fff;
  padding:60px 0;
  position:relative;
  overflow:hidden;
}
.contact::before{
  content:"";
  position:absolute;
  top:-120px;left:-100px;
  width:380px;height:380px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(93,173,226,.18) 0%,rgba(93,173,226,0) 70%);
  pointer-events:none;
}
.contact .sec-head h2{color:#fff;position:relative;}
.contact .sec-head p{color:#9db3d3;position:relative;}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;position:relative;}
.cbox{background:rgba(255,255,255,.07);border:1px solid rgba(93,173,226,.28);border-radius:14px;padding:28px 22px;text-align:center;backdrop-filter:blur(2px);}
.cbox .ic{font-size:28px;}
.cbox h4{margin-top:14px;font-size:15px;color:#b8cae0;font-weight:500;}
.cbox a,.cbox span{display:block;margin-top:8px;font-size:17px;font-weight:600;color:#fff;word-break:break-word;}
.cbox a:hover{color:var(--sky);}

footer{background:#08182b;color:#8fa4bf;padding:26px 0;text-align:center;font-size:14px;}
footer .footer-social{display:flex;justify-content:center;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap;}
footer .footer-social a{display:inline-flex;align-items:center;gap:7px;color:#b8cae0;font-size:15px;font-weight:500;text-decoration:none;transition:.2s;}
footer .footer-social a:hover{color:var(--sky);}

/* Buttons (generic, used on inner pages too) */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:8px;font-weight:600;font-size:15px;transition:.2s;}
.btn-primary{background:var(--sky);color:#082038;}
.btn-primary:hover{background:#7fc5f0;}
/* Secondary button (email inquiry on product pages) */
.btn-outline{background:transparent;color:var(--navy2);border:2px solid var(--line);}
.btn-outline:hover{border-color:var(--navy2);background:#f4f8fc;}
/* Button pair: WhatsApp + Email side by side, wraps on narrow screens */
.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px;}

/* Breadcrumb */
.breadcrumb{background:var(--bg);padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted);}
.breadcrumb a{color:var(--navy2);font-weight:500;}
.breadcrumb a:hover{color:var(--sky);}
.breadcrumb .sep{margin:0 8px;color:#b3c0d0;}

/* Page head */
.page-head{padding:38px 0 6px;}
.page-head h1{font-size:34px;font-weight:700;}
.page-head p{color:var(--muted);margin-top:8px;font-size:16px;max-width:720px;}

/* Subcat grid (category landing page) */
.subcat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:26px;}
.subcat-card{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 4px 16px rgba(11,31,56,.05);transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column;}
.subcat-card:hover{transform:translateY(-5px);box-shadow:0 12px 30px rgba(11,31,56,.12);}
.subcat-img{height:230px;background:#f0f4f8;display:flex;align-items:center;justify-content:center;overflow:hidden;padding:16px;}
.subcat-img img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;transition:transform .35s;}
.subcat-card:hover .subcat-img img{transform:scale(1.04);}
.subcat-body{padding:18px 18px 22px;text-align:center;}
.subcat-body h3{font-size:17px;font-weight:700;}

/* Product detail */
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:42px;margin-top:26px;align-items:start;}
.pd-img{background:#f0f4f8;border-radius:14px;overflow:hidden;border:1px solid var(--line);padding:18px;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:380px;}
.pd-img img{max-width:100%;max-height:480px;width:auto;height:auto;object-fit:contain;display:block;}
.pd-main{flex:1;width:100%;display:flex;align-items:center;justify-content:center;min-height:380px;}
.pd-main img{max-width:100%;max-height:480px;width:auto;height:auto;object-fit:contain;display:block;}
.pd-thumbs{display:flex;gap:10px;margin-top:14px;justify-content:center;flex-wrap:wrap;}
.pd-thumbs img{width:72px;height:72px;object-fit:contain;background:#fff;border:2px solid var(--line);border-radius:8px;padding:4px;cursor:pointer;transition:border-color .2s,transform .15s;}
.pd-thumbs img:hover{transform:translateY(-2px);border-color:#9bb8d6;}
.pd-thumbs img.active{border-color:#0b1f38;border-width:2px;box-shadow:0 0 0 2px rgba(11,31,56,.12);}
.pd-info h1{font-size:30px;font-weight:700;}
.pd-info .lead{color:var(--muted);margin:12px 0 18px;font-size:16px;}
.pd-info h4{font-size:16px;margin:22px 0 10px;font-weight:600;}
.spec-table{width:100%;border-collapse:collapse;font-size:14px;}
.spec-table td{padding:10px 12px;border-bottom:1px solid var(--line);}
.spec-table td:first-child{color:var(--muted);width:46%;}
.spec-table td:last-child{font-weight:600;color:var(--text);}

/* 规格+包装合并表：每个详情页统一格式（表头 Specifications / Qty/ctn，黄底虚线） */
.pack-table{width:100%;border-collapse:collapse;font-size:14px;margin:2px 0 14px;}
.pack-table th,.pack-table td{border:1px dashed #C9A227;padding:9px 14px;text-align:center;}
.pack-table thead th{background:#F5C518;color:#111;font-weight:600;letter-spacing:.04em;}
.pack-table tbody td{font-weight:600;color:var(--text);}
.pack-table tbody td.on-req{color:var(--muted);font-weight:400;}
.spec-note{font-size:13px;line-height:1.65;color:var(--muted);background:#fffaf0;border-left:3px solid var(--amber);padding:11px 14px;margin:18px 0 0;border-radius:0 6px 6px 0;}
.back-link{display:inline-flex;align-items:center;gap:6px;margin-top:30px;color:var(--navy2);font-weight:600;font-size:15px;}
.back-link:hover{color:var(--sky);}

@media(max-width:1100px){
  .cat-grid{grid-template-columns:repeat(3,1fr);}
}
@media(max-width:980px){
  .why-grid{grid-template-columns:repeat(2,1fr);}
  .subcat-grid{grid-template-columns:repeat(2,1fr);}
  .product-detail{grid-template-columns:1fr;gap:24px;}
  .hero h1{font-size:34px;}
}
@media(max-width:680px){
  .cat-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
  .why-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .subcat-grid{grid-template-columns:1fr;}
  .contact-row{flex-direction:column;align-items:center;gap:10px;}
  .nav-links{display:none;}
  .nav-cta{display:inline-flex;}
  .hero h1{font-size:28px;}
  .cat-img{height:160px;}
  .page-head h1{font-size:26px;}
}

/* ===== WhatsApp floating button (global) ===== */
.wa-float{position:fixed;right:20px;bottom:20px;z-index:9999;display:inline-flex;align-items:center;gap:8px;background:#25D366;color:#fff;text-decoration:none;font-weight:600;font-size:15px;padding:12px 18px;border-radius:30px;box-shadow:0 6px 20px rgba(37,211,102,.4);transition:transform .15s ease,background .15s ease;}
.wa-float:hover{background:#1ebe5b;transform:translateY(-2px);}
.wa-float svg{width:22px;height:22px;fill:#fff;flex:none;}
.wa-float .wa-label{line-height:1;}
@media(max-width:680px){.wa-float{padding:13px;}.wa-float .wa-label{display:none;}}

/* ===== Homepage catalog lead-magnet ===== */
.lead-magnet{padding:48px 0;background:linear-gradient(180deg,#f4f8ff,#fff);}
.lm-card{max-width:920px;margin:0 auto;background:#fff;border:1px solid #e3e9f2;border-radius:16px;padding:34px 36px;display:flex;gap:34px;align-items:center;box-shadow:0 10px 30px rgba(31,42,68,.06);}
.lm-text{flex:1;}
.lm-text h2{margin:0 0 8px;color:#1f2a44;font-size:24px;}
.lm-text p{margin:0 0 18px;color:#33415c;line-height:1.7;}
.lm-form{display:flex;gap:10px;flex-wrap:wrap;}
.lm-form input{flex:1;min-width:220px;font:inherit;padding:12px 14px;border:1px solid #cfd8e8;border-radius:9px;background:#fbfdff;color:#1f2a44;}
.lm-form input:focus{outline:none;border-color:#1d4ed8;box-shadow:0 0 0 3px rgba(29,78,216,.12);}
.lm-note{margin:12px 0 0;font-size:13px;color:#64748b;}
.lm-ok{margin:14px 0 0;color:#15803d;font-weight:600;}
.lm-err{margin:14px 0 0;color:#b91c1c;font-weight:600;}
@media(max-width:680px){.lm-card{flex-direction:column;text-align:center;padding:28px 22px;}.lm-form{justify-content:center;}}