/* ===== 钧实外贸独立站 · 橙金工业风 ===== */
:root{
  --navy:#16263a;
  --navy-2:#21384f;
  --ink:#1d2733;
  --muted:#64748b;
  --accent:#ff7a1a;
  --accent-dark:#e05e00;
  --gold:#f0b429;
  --line:#e6ebf1;
  --bg:#ffffff;
  --bg-soft:#f5f7fa;
  --shadow:0 8px 30px rgba(22,38,58,.10);
  --shadow-sm:0 4px 16px rgba(22,38,58,.08);
  --radius:14px;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Microsoft YaHei","PingFang SC","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  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}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:74px 0}
.section.soft{background:var(--bg-soft)}
.section.navy{background:var(--navy);color:#eaf0f6}
.eyebrow{color:var(--accent);font-weight:700;letter-spacing:2px;font-size:13px;text-transform:uppercase}
.h2{font-size:32px;font-weight:800;color:var(--navy);margin:10px 0 8px;line-height:1.25}
.navy .h2{color:#fff}
.lead{color:var(--muted);max-width:720px;font-size:17px}
.navy .lead{color:#b9c6d4}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}

/* ===== 顶部导航 ===== */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;color:var(--navy);font-size:19px}
.brand .mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--gold));
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:16px;box-shadow:var(--shadow-sm)}
.brand small{display:block;font-size:11px;font-weight:600;color:var(--muted);letter-spacing:1px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-weight:600;color:var(--ink);font-size:15px;position:relative;padding:6px 0}
.nav-links a:hover{color:var(--accent)}
.nav-links a.active{color:var(--accent)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);border-radius:2px}
.nav-right{display:flex;align-items:center;gap:14px}
.lang-toggle{cursor:pointer;border:1px solid var(--line);background:#fff;color:var(--navy);
  font-weight:700;font-size:13px;padding:7px 13px;border-radius:20px;transition:.2s}
.lang-toggle:hover{border-color:var(--accent);color:var(--accent)}
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:700;font-size:15px;
  padding:11px 22px;border-radius:30px;border:none;cursor:pointer;transition:.2s;box-shadow:var(--shadow-sm)}
.btn:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn.ghost{background:transparent;border:1.5px solid rgba(255,255,255,.6);color:#fff}
.btn.ghost:hover{border-color:#fff;background:rgba(255,255,255,.12)}
.btn.navy{background:var(--navy);color:#fff}
.btn.navy:hover{background:var(--navy-2)}
.menu-btn{display:none;background:none;border:none;font-size:26px;color:var(--navy);cursor:pointer}

/* ===== Hero ===== */
.hero{position:relative;color:#fff;overflow:hidden;min-height:560px;display:flex;align-items:center}
.hero .bg{position:absolute;inset:0;background:#0e1a28 url("../img/hero.png") center/cover no-repeat}
.hero .bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,26,40,.94) 38%,rgba(14,26,40,.62) 70%,rgba(14,26,40,.35) 100%)}
.hero .wrap{position:relative;z-index:2;padding:90px 22px}
.hero h1{font-size:46px;line-height:1.18;font-weight:900;max-width:760px;text-shadow:0 2px 20px rgba(0,0,0,.3)}
.hero .accent{color:var(--gold)}
.hero p.sub{font-size:19px;color:#cdd9e6;max-width:600px;margin:22px 0 32px}
.hero .cta{display:flex;gap:16px;flex-wrap:wrap}
.hero .badges{display:flex;gap:26px;margin-top:46px;flex-wrap:wrap}
.hero .badge{display:flex;flex-direction:column}
.hero .badge b{font-size:30px;font-weight:900;color:#fff}
.hero .badge span{font-size:13px;color:#9fb2c5;letter-spacing:.5px}

/* ===== 数据条 ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;text-align:center;box-shadow:var(--shadow-sm)}
.stat b{display:block;font-size:38px;font-weight:900;color:var(--accent)}
.stat span{color:var(--muted);font-size:14px;font-weight:600}
.stat em{display:block;font-style:normal;font-size:11px;color:#9aa7b4;letter-spacing:1px;margin-top:2px}

/* ===== 产品卡片网格 ===== */
.grid{display:grid;gap:22px}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:.22s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfd9e4}
.card .thumb{aspect-ratio:4/3;background:var(--bg-soft);overflow:hidden;display:flex;align-items:center;justify-content:center}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card .body{padding:20px 20px 22px}
.card .body h3{font-size:19px;color:var(--navy);font-weight:800}
.card .body .en{font-size:12px;color:var(--accent);font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:8px}
.card .body p{color:var(--muted);font-size:14.5px;margin-bottom:14px}
.card .more{color:var(--accent);font-weight:700;font-size:14px}
.card .more:hover{text-decoration:underline}

/* ===== 优势 ===== */
.feat{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;height:100%;box-shadow:var(--shadow-sm)}
.feat .ic{flex:0 0 46px;width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--gold));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:22px;font-weight:900}
.feat h4{color:var(--navy);font-size:17px;margin-bottom:6px}
.feat p{color:var(--muted);font-size:14.5px}

/* ===== CTA 横幅 ===== */
.cta-band{background:linear-gradient(120deg,var(--navy),var(--navy-2));color:#fff;border-radius:20px;
  padding:46px 44px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;box-shadow:var(--shadow)}
.cta-band h3{font-size:26px;font-weight:800}
.cta-band p{color:#b9c6d4;margin-top:6px}

/* ===== 页脚 ===== */
footer.site{background:var(--navy);color:#cdd9e6;padding:52px 0 26px}
footer.site .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:30px}
footer.site h5{color:#fff;font-size:15px;margin-bottom:14px;font-weight:800;letter-spacing:.5px}
footer.site a,footer.site p{color:#aebccb;font-size:14px;line-height:1.9}
footer.site a:hover{color:var(--gold)}
footer .brand{color:#fff;margin-bottom:12px}
footer .brand small{color:#8aa0b4}
footer .bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:18px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:#7e93a7;font-size:13px}

/* ===== 产品详情页 ===== */
.page-hero{background:linear-gradient(120deg,var(--navy),var(--navy-2));color:#fff;padding:64px 0 56px}
.page-hero .eyebrow{color:var(--gold)}
.page-hero h1{font-size:38px;font-weight:900;margin:10px 0 8px}
.page-hero .en{color:var(--accent);font-weight:700;letter-spacing:2px;text-transform:uppercase;font-size:14px}
.page-hero p{color:#c2d0de;max-width:720px;margin-top:14px;font-size:16.5px}

.product-block{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center;padding:50px 0;border-bottom:1px solid var(--line)}
.product-block:nth-child(even){grid-template-columns:.95fr 1.05fr}
.product-block:nth-child(even) .pb-media{order:2}
.product-block .pb-media{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.product-block .pb-media img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:12px;background:var(--bg-soft);border:1px solid var(--line)}
.product-block h2{font-size:26px;color:var(--navy);font-weight:800}
.product-block .pb-en{color:var(--accent);font-weight:700;letter-spacing:1.5px;text-transform:uppercase;font-size:13px;margin-bottom:8px}
.product-block p{color:#46566a;margin:14px 0;font-size:16px}
.spec-list{list-style:none;margin-top:16px;display:grid;gap:10px}
.spec-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:#3a4757}
.spec-list li::before{content:"";flex:0 0 8px;width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:9px}
.spec-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.spec-tags span{background:var(--bg-soft);border:1px solid var(--line);color:var(--navy);font-size:13px;
  font-weight:600;padding:6px 12px;border-radius:20px}

/* ===== 关于页 ===== */
.timeline{position:relative;margin-top:20px;padding-left:26px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--line)}
.timeline .item{position:relative;padding:0 0 26px 6px}
.timeline .item::before{content:"";position:absolute;left:-26px;top:5px;width:14px;height:14px;border-radius:50%;
  background:var(--accent);border:3px solid #fff;box-shadow:0 0 0 2px var(--accent)}
.timeline .item b{color:var(--navy);font-size:17px}
.timeline .item p{color:var(--muted);font-size:14.5px;margin-top:2px}
.partners{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.partners span{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 18px;font-weight:700;color:var(--navy);box-shadow:var(--shadow-sm)}
.facility-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:18px}
.facility-grid figure{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--line)}
.facility-grid img{width:100%;aspect-ratio:4/3;object-fit:cover}
.facility-grid figcaption{padding:12px 14px;font-size:14px;color:var(--muted);background:#fff}

/* ===== 联系页 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:40px;align-items:start}
.info-card{background:var(--navy);color:#eaf0f6;border-radius:var(--radius);padding:32px}
.info-card h3{color:#fff;font-size:20px;margin-bottom:18px}
.info-row{display:flex;gap:14px;align-items:flex-start;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.info-row:last-child{border-bottom:none}
.info-row .ic{font-size:20px}
.info-row b{display:block;color:#fff;font-size:14px;letter-spacing:.5px}
.info-row span{color:#aebccb;font-size:14px}
a.info-row{text-decoration:none;color:inherit;transition:background .15s}
a.info-row:hover{background:rgba(255,255,255,.06);border-radius:8px}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm)}
.form label{display:block;font-size:14px;font-weight:700;color:var(--navy);margin:14px 0 6px}
.form label:first-child{margin-top:0}
.form input,.form textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:12px 14px;
  font-size:15px;font-family:inherit;color:var(--ink);background:#fbfcfe;transition:.2s}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--accent);background:#fff}
.form textarea{resize:vertical;min-height:120px}
.form .btn{margin-top:18px;width:100%;font-size:16px}
.form .note{font-size:12.5px;color:var(--muted);margin-top:12px}
.map-note{margin-top:22px;background:var(--bg-soft);border:1px dashed var(--line);border-radius:12px;padding:18px;color:var(--muted);font-size:14px}
.map-wrap{margin-top:20px;border-radius:14px;overflow:hidden;border:1px solid rgba(255,255,255,.14);box-shadow:0 10px 26px rgba(0,0,0,.28)}
.map-wrap iframe{display:block;width:100%;height:230px;border:0}
.map-link{display:inline-block;margin-top:10px;color:var(--orange);font-size:13px;font-weight:600;text-decoration:none}
.map-link:hover{text-decoration:underline}
.map-hint{margin-top:10px;color:#aebccb;font-size:13px;line-height:1.5}

/* ===== 响应式 ===== */
@media(max-width:900px){
  .nav-links{position:fixed;top:68px;left:0;right:0;background:#fff;flex-direction:column;gap:0;
    border-bottom:1px solid var(--line);padding:8px 22px 16px;display:none;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 0;border-bottom:1px solid var(--line);width:100%}
  .menu-btn{display:block}
  .hero h1{font-size:34px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .grid.cols-3,.grid.cols-2{grid-template-columns:1fr}
  .product-block,.product-block:nth-child(even){grid-template-columns:1fr}
  .product-block:nth-child(even) .pb-media{order:0}
  .contact-grid{grid-template-columns:1fr}
  .facility-grid{grid-template-columns:1fr}
  footer.site .cols{grid-template-columns:1fr 1fr}
  .cta-band{padding:32px 24px}
  .h2{font-size:26px}
}
@media(max-width:560px){
  footer.site .cols{grid-template-columns:1fr}
  .hero .badges{gap:16px}
  .hero .badge b{font-size:24px}
}