/* =========================================================
   乐清市柏宜金属配件有限公司 · 官网样式
   Industrial B2B · Copper & Electrical Fittings
   ========================================================= */
:root{
  --copper:#b5651d;
  --copper-dark:#8f4a12;
  --copper-light:#e8b982;
  --ink:#1d2733;
  --ink-soft:#46556a;
  --muted:#6b7888;
  --line:#e4e8ee;
  --bg:#ffffff;
  --bg-soft:#f5f7fa;
  --bg-deep:#14202e;
  --bg-deep-2:#1d2c3d;
  --radius:10px;
  --shadow:0 6px 24px rgba(20,32,46,.08);
  --shadow-sm:0 2px 10px rgba(20,32,46,.06);
  --maxw:1200px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Segoe UI",-apple-system,BlinkMacSystemFont,Roboto,Helvetica,Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section-soft{background:var(--bg-soft)}
.section-head{text-align:center;max-width:720px;margin:0 auto 48px}
.section-head .eyebrow{color:var(--copper);font-weight:700;letter-spacing:3px;font-size:13px;text-transform:uppercase}
.section-head h2{font-size:32px;margin:10px 0 14px;font-weight:800;letter-spacing:.5px}
.section-head p{color:var(--muted);font-size:16px}

/* ---------- Top bar ---------- */
.topbar{background:var(--bg-deep);color:#c7d2df;font-size:13px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar a:hover{color:var(--copper-light)}
.topbar .tb-left span{margin-right:22px}
.topbar .tb-right span{margin-left:22px}
.topbar svg{width:13px;height:13px;vertical-align:-2px;margin-right:4px;fill:currentColor}

/* ---------- Header / nav ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{width:46px;height:46px;border-radius:8px;background:linear-gradient(135deg,var(--copper),var(--copper-dark));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:20px;letter-spacing:1px;flex:none;box-shadow:var(--shadow-sm)}
.brand-text .cn{font-size:18px;font-weight:800;line-height:1.2;white-space:nowrap}
.brand-text .en{font-size:11px;color:var(--muted);letter-spacing:.4px;white-space:nowrap}
.nav-menu{display:flex;gap:6px;align-items:center}
.nav-menu a{padding:9px 16px;border-radius:6px;font-weight:600;font-size:15.5px;color:var(--ink-soft);transition:.2s}
.nav-menu a:hover,.nav-menu a.active{color:var(--copper);background:#faf3ec}
.nav-cta{background:var(--copper);color:#fff!important;padding:10px 20px!important;border-radius:6px;font-weight:700}
.nav-cta:hover{background:var(--copper-dark)!important;color:#fff!important}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0;border-radius:2px;transition:.3s}

/* ---------- Hero ---------- */
.hero{position:relative;background:linear-gradient(120deg,#14202e 0%,#1d2c3d 55%,#24394d 100%);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 82% 18%,rgba(181,101,29,.35),transparent 45%),
  radial-gradient(circle at 10% 90%,rgba(181,101,29,.18),transparent 40%)}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding-top:80px;padding-bottom:80px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(232,185,130,.14);border:1px solid rgba(232,185,130,.4);color:var(--copper-light);padding:6px 14px;border-radius:30px;font-size:13px;font-weight:600;margin-bottom:22px}
.hero h1{font-size:46px;line-height:1.25;font-weight:900;letter-spacing:1px}
.hero h1 .hl{color:var(--copper-light)}
.hero-sub{margin:20px 0 30px;font-size:17.5px;color:#c4d0de;max-width:560px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.hero-tags span{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);padding:6px 14px;border-radius:6px;font-size:13.5px;color:#dbe4ee}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:7px;font-weight:700;font-size:15.5px;cursor:pointer;border:0;transition:.2s;white-space:nowrap}
.btn-primary{background:var(--copper);color:#fff}
.btn-primary:hover{background:var(--copper-dark);transform:translateY(-2px);box-shadow:0 10px 22px rgba(181,101,29,.35)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.4)}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-line{background:#fff;color:var(--copper);border:1.5px solid var(--copper)}
.btn-line:hover{background:#faf3ec}
.hero-visual{position:relative}
.hero-img{border-radius:14px;box-shadow:0 30px 60px rgba(0,0,0,.45);aspect-ratio:4/3;object-fit:cover;width:100%;border:1px solid rgba(255,255,255,.12)}
.hero-stats{position:absolute;left:-14px;bottom:-26px;background:#fff;color:var(--ink);border-radius:12px;box-shadow:var(--shadow);padding:18px 24px;display:flex;gap:28px}
.hero-stat .num{font-size:26px;font-weight:900;color:var(--copper);line-height:1}
.hero-stat .lbl{font-size:12.5px;color:var(--muted);margin-top:6px}

/* ---------- Trust strip ---------- */
.trust{background:#fff;border-bottom:1px solid var(--line)}
.trust .container{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:30px 20px}
.trust-item{display:flex;align-items:center;gap:14px;justify-content:center}
.trust-ic{width:44px;height:44px;border-radius:9px;background:#faf3ec;color:var(--copper);display:flex;align-items:center;justify-content:center;flex:none}
.trust-ic svg{width:23px;height:23px;fill:currentColor}
.trust-item .t b{display:block;font-size:16px;font-weight:800}
.trust-item .t span{font-size:13px;color:var(--muted)}

/* ---------- Category cards ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:.25s;display:block}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--copper-light)}
.cat-ic{width:56px;height:56px;border-radius:12px;background:linear-gradient(135deg,#faf3ec,#f3e2cf);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.cat-ic svg{width:28px;height:28px;stroke:var(--copper);fill:none;stroke-width:1.7}
.cat-card h3{font-size:18px;font-weight:800;margin-bottom:8px}
.cat-card p{font-size:14px;color:var(--muted);margin-bottom:14px;min-height:42px}
.cat-card .more{color:var(--copper);font-weight:700;font-size:14px}
.cat-card .more::after{content:" →";transition:.2s}
.cat-card:hover .more::after{margin-left:4px}

/* ---------- Products ---------- */
.prod-filter{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:40px}
.prod-filter button{padding:8px 20px;border-radius:30px;border:1px solid var(--line);background:#fff;font-size:14.5px;font-weight:600;color:var(--ink-soft);cursor:pointer;transition:.2s}
.prod-filter button.active,.prod-filter button:hover{background:var(--copper);border-color:var(--copper);color:#fff}
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.prod-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.prod-img{aspect-ratio:4/3;background:#f7f9fb;overflow:hidden;position:relative}
.prod-img img{width:100%;height:100%;object-fit:contain;padding:18px;transition:.35s}
.prod-card:hover .prod-img img{transform:scale(1.06)}
.prod-tag{position:absolute;top:12px;left:12px;background:var(--copper);color:#fff;font-size:11.5px;font-weight:700;padding:3px 10px;border-radius:4px}
.prod-body{padding:20px;display:flex;flex-direction:column;flex:1}
.prod-body h3{font-size:17px;font-weight:800;margin-bottom:6px}
.prod-body .model{font-size:13px;color:var(--copper);font-weight:700;margin-bottom:8px;letter-spacing:.5px}
.prod-body p{font-size:13.5px;color:var(--muted);margin-bottom:14px;flex:1}
.prod-feat{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.prod-feat span{font-size:12px;background:var(--bg-soft);color:var(--ink-soft);padding:3px 10px;border-radius:4px}
.prod-body .pbtn{margin-top:auto;color:var(--copper);font-weight:700;font-size:14px;border-top:1px dashed var(--line);padding-top:14px}

/* ---------- Detail block (products page) ---------- */
.prod-detail{scroll-margin-top:90px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;margin-bottom:30px;box-shadow:var(--shadow-sm)}
.detail-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:start}
.detail-imgs .main-img{background:#f7f9fb;border:1px solid var(--line);border-radius:9px;padding:16px;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.detail-imgs .main-img img{max-height:320px;width:auto;object-fit:contain}
.detail-thumbs{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.detail-thumbs img{background:#f7f9fb;border:1px solid var(--line);border-radius:8px;padding:10px;aspect-ratio:4/3;object-fit:contain;cursor:pointer;transition:.2s}
.detail-thumbs img:hover,.detail-thumbs img.on{border-color:var(--copper);box-shadow:0 0 0 2px rgba(181,101,29,.25)}
.detail-info .d-cat{color:var(--copper);font-size:13px;font-weight:700;letter-spacing:1px}
.detail-info h3{font-size:26px;font-weight:900;margin:6px 0 6px}
.detail-info .d-model{font-size:14px;color:var(--muted);margin-bottom:18px}
.d-props{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:8px;overflow:hidden;margin-bottom:20px}
.d-props .p{display:flex;border-bottom:1px solid var(--line);font-size:14px}
.d-props .p:nth-last-child(-n+2){border-bottom:0}
.d-props .k{background:var(--bg-soft);color:var(--muted);padding:9px 14px;width:92px;flex:none;font-weight:600}
.d-props .v{padding:9px 14px;font-weight:600}
.desc{color:var(--ink-soft);font-size:14.5px;margin-bottom:20px}
.d-actions{display:flex;gap:12px;flex-wrap:wrap}
.d-actions .btn{padding:11px 22px;font-size:14.5px}

/* spec table */
.spec-wrap{margin-top:30px}
.spec-wrap h4{font-size:17px;font-weight:800;margin-bottom:6px;display:flex;align-items:center;gap:9px}
.spec-wrap h4::before{content:"";width:4px;height:18px;background:var(--copper);border-radius:2px}
.spec-wrap .spec-note{font-size:12.5px;color:var(--muted);margin:4px 0 14px}
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:8px}
table.spec{border-collapse:collapse;width:100%;font-size:13.5px;min-width:560px}
table.spec th,table.spec td{border:1px solid var(--line);padding:9px 12px;text-align:center;white-space:nowrap}
table.spec thead th{background:var(--bg-deep);color:#fff;font-weight:700;position:sticky;top:0}
table.spec tbody tr:nth-child(even){background:var(--bg-soft)}
table.spec tbody tr:hover{background:#faf3ec}
table.spec td:first-child{font-weight:700;color:var(--copper-dark)}
.spec-img{margin-top:18px;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#f7f9fb}
.spec-img img{width:100%;height:auto}
.spec-img .cap{padding:8px 14px;font-size:12.5px;color:var(--muted);background:#fff;border-top:1px solid var(--line)}

/* ---------- About / why ---------- */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.why-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm)}
.why-num{font-size:40px;font-weight:900;color:var(--copper-light);line-height:1;font-family:Georgia,serif}
.why-card h3{font-size:18px;font-weight:800;margin:14px 0 10px}
.why-card p{font-size:14.5px;color:var(--muted)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.split-media img{border-radius:14px;box-shadow:var(--shadow);width:100%;aspect-ratio:4/3;object-fit:cover}
.split h2{font-size:30px;font-weight:900;margin-bottom:18px}
.split p{color:var(--ink-soft);margin-bottom:14px}
.split ul li{padding-left:30px;position:relative;margin-bottom:12px;color:var(--ink-soft);font-size:15px}
.split ul li::before{content:"✓";position:absolute;left:0;top:0;width:21px;height:21px;background:var(--copper);color:#fff;border-radius:50%;font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:900}

/* stats band */
.band{background:linear-gradient(120deg,var(--bg-deep),var(--bg-deep-2));color:#fff}
.band .container{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:56px 20px;text-align:center}
.band .num{font-size:42px;font-weight:900;color:var(--copper-light);line-height:1}
.band .lbl{margin-top:10px;color:#aebdce;font-size:14.5px}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:9px;margin-bottom:14px;overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:0;padding:20px 24px;font-size:16px;font-weight:700;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;font-family:var(--font)}
.faq-q .ico{flex:none;width:26px;height:26px;border-radius:50%;background:#faf3ec;color:var(--copper);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;transition:.25s}
.faq-item.open .ico{transform:rotate(45deg);background:var(--copper);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 24px 22px;color:var(--muted);font-size:14.5px}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(120deg,var(--copper),var(--copper-dark));color:#fff;text-align:center}
.cta h2{font-size:32px;font-weight:900;margin-bottom:14px}
.cta p{font-size:16.5px;opacity:.95;margin-bottom:28px}
.cta .btn{background:#fff;color:var(--copper-dark)}
.cta .btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(0,0,0,.25)}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:start}
.contact-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.c-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm)}
.c-card .ic{width:46px;height:46px;border-radius:10px;background:#faf3ec;color:var(--copper);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.c-card .ic svg{width:23px;height:23px;fill:currentColor}
.c-card h4{font-size:15px;color:var(--muted);font-weight:600;margin-bottom:6px}
.c-card .big{font-size:18px;font-weight:800;word-break:break-all}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.form-card h3{font-size:22px;font-weight:900;margin-bottom:6px}
.form-card>p{color:var(--muted);font-size:14px;margin-bottom:22px}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.form-row input,.form-row textarea,.form-row select{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:7px;font-size:14.5px;font-family:var(--font);background:var(--bg-soft)}
.form-row input:focus,.form-row textarea:focus{outline:none;border-color:var(--copper);background:#fff;box-shadow:0 0 0 3px rgba(181,101,29,.12)}
.form-row textarea{resize:vertical;min-height:96px}
.form-grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-note{font-size:12.5px;color:var(--muted);margin-top:6px}

/* page banner */
.page-banner{background:linear-gradient(120deg,var(--bg-deep),var(--bg-deep-2));color:#fff;padding:60px 0 54px;position:relative;overflow:hidden}
.page-banner::after{content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(181,101,29,.4),transparent 70%)}
.page-banner .container{position:relative;z-index:2}
.page-banner h1{font-size:38px;font-weight:900;margin-bottom:10px}
.page-banner p{color:#b9c7d6;font-size:16px;max-width:640px}
.crumb{font-size:13px;color:#8fa0b3;margin-bottom:16px}
.crumb a:hover{color:var(--copper-light)}

/* timeline / values */
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.value-card{text-align:center;padding:30px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.value-card .vic{width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,var(--copper),var(--copper-dark));color:#fff;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.value-card .vic svg{width:28px;height:28px;fill:#fff}
.value-card h3{font-size:17px;font-weight:800;margin-bottom:8px}
.value-card p{font-size:13.5px;color:var(--muted)}

/* ---------- Footer ---------- */
.footer{background:var(--bg-deep);color:#9fb0c2;padding:58px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer h5{color:#fff;font-size:15.5px;font-weight:800;margin-bottom:18px}
.footer .f-about p{margin:14px 0;font-size:13.5px;line-height:1.8}
.footer ul li{margin-bottom:11px}
.footer ul li a:hover{color:var(--copper-light)}
.footer .f-contact li{display:flex;gap:9px;margin-bottom:13px;align-items:flex-start;font-size:13.5px}
.footer .f-contact svg{width:15px;height:15px;fill:var(--copper-light);flex:none;margin-top:4px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:20px 0;font-size:13px;flex-wrap:wrap;gap:10px}
.footer-bottom a:hover{color:var(--copper-light)}

/* back to top */
.to-top{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;background:var(--copper);color:#fff;border:0;cursor:pointer;font-size:20px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.3s;z-index:90}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--copper-dark)}

/* ---------- Responsive ---------- */
@media(max-width:1024px){
  .cat-grid,.prod-grid{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:38px}
  .trust .container,.band .container{grid-template-columns:repeat(2,1fr);gap:24px}
  .value-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  body{font-size:15px}
  .section{padding:52px 0}
  .section-head h2{font-size:26px}
  .topbar .tb-left span:nth-child(2){display:none}
  .nav-menu{position:fixed;top:74px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:14px 20px;gap:4px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);transform:translateY(-130%);transition:.32s;visibility:hidden}
  .nav-menu.open{transform:translateY(0);visibility:visible}
  .nav-menu a{padding:13px 14px}
  .nav-toggle{display:block}
  .hero .container{grid-template-columns:1fr;padding-top:54px;padding-bottom:60px}
  .hero-visual{order:-1}
  .hero h1{font-size:31px}
  .hero-stats{left:0;bottom:-20px;padding:14px 18px;gap:18px}
  .hero-stat .num{font-size:21px}
  .cat-grid,.prod-grid,.why-grid,.split,.contact-grid,.detail-grid,.form-grid2{grid-template-columns:1fr}
  .trust .container{grid-template-columns:1fr;gap:16px}
  .trust-item{justify-content:flex-start}
  .d-props{grid-template-columns:1fr}
  .d-props .p:nth-last-child(2){border-bottom:1px solid var(--line)}
  .prod-detail{padding:22px 16px}
  .detail-grid{gap:22px}
  .contact-cards{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .band .container{grid-template-columns:repeat(2,1fr)}
  .page-banner h1{font-size:29px}
}
/* print */
@media print{
  .site-header,.topbar,.cta,.to-top,.prod-filter,.d-actions,.nav-cta{display:none!important}
  body{color:#000}
  .prod-detail{break-inside:avoid;box-shadow:none}
  a{color:#000}
}