/* =========================================================
   Huxin Bags - Direct Backpack & Bag Manufacturer
   Brand color: Deep navy (#1e3a5f) + warm amber (#d97706)
   ========================================================= */
:root{
  --navy:#1e3a5f;
  --navy-2:#0f2540;
  --amber:#d97706;
  --amber-2:#b45309;
  --bg:#f7f8fb;
  --line:#e5e7eb;
  --ink:#0f172a;
  --ink-2:#475569;
  --muted:#94a3b8;
  --white:#ffffff;
  --radius:14px;
  --shadow:0 8px 30px rgba(15,37,64,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Arial,sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ============== NAV ============== */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--navy);font-size:20px}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--navy),#34568b);
  display:grid;place-items:center;color:#fff;font-weight:800;
}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:15px;color:var(--ink-2);font-weight:500}
.nav-links a:hover,.nav-links a.active{color:var(--navy)}
.nav-right{display:flex;align-items:center;gap:14px}
.lang-switch{
  position:relative;
}
.lang-btn{
  display:flex;align-items:center;gap:6px;
  padding:8px 12px;border:1px solid var(--line);border-radius:10px;
  background:#fff;font-size:13px;color:var(--ink-2);cursor:pointer;
}
.lang-btn svg{width:14px;height:14px}
.lang-menu{
  position:absolute;right:0;top:48px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow);min-width:160px;padding:6px;display:none;
}
.lang-menu.open{display:block}
.lang-menu button{
  display:flex;align-items:center;gap:8px;width:100%;
  padding:8px 10px;border:none;background:transparent;cursor:pointer;
  font-size:14px;color:var(--ink-2);text-align:left;border-radius:8px;
}
.lang-menu button:hover{background:var(--bg)}
.lang-menu button.active{color:var(--navy);font-weight:600}
.cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:10px;
  background:var(--amber);color:#fff;font-weight:600;font-size:14px;
  border:none;cursor:pointer;transition:.2s;
}
.cta:hover{background:var(--amber-2)}
.cta.ghost{background:transparent;border:1.5px solid var(--navy);color:var(--navy)}
.cta.ghost:hover{background:var(--navy);color:#fff}
.menu-toggle{display:none}

/* ============== HERO ============== */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0f2540 0%,#1e3a5f 60%,#2b4f7e 100%);
  color:#fff;padding:96px 0 120px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(800px 400px at 20% 10%,rgba(217,119,6,.18),transparent 60%),
    radial-gradient(600px 300px at 90% 90%,rgba(52,86,139,.4),transparent 60%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:1}
.eyebrow{
  display:inline-block;padding:6px 12px;border-radius:999px;
  background:rgba(217,119,6,.15);color:#fde68a;
  font-size:13px;font-weight:600;letter-spacing:.5px;margin-bottom:18px;
}
.hero h1{
  font-size:54px;line-height:1.12;font-weight:800;
  letter-spacing:-.02em;margin:0 0 18px;max-width:900px;
}
.hero h1 .accent{color:#fbbf24}
.hero p.lead{
  font-size:18px;color:rgba(255,255,255,.82);max-width:760px;margin:0 0 32px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-actions .cta.ghost{border-color:rgba(255,255,255,.4);color:#fff}
.hero-actions .cta.ghost:hover{background:#fff;color:var(--navy)}

.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  margin-top:64px;
}
.stat{
  padding:22px 20px;border-radius:16px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(6px);
}
.stat .num{font-size:34px;font-weight:800;color:#fff;letter-spacing:-.02em}
.stat .num span{font-size:18px;color:#fbbf24;margin-left:4px}
.stat .label{color:rgba(255,255,255,.78);font-size:13px;margin-top:4px}

/* ============== SECTIONS ============== */
section{padding:88px 0}
.section-head{text-align:center;margin-bottom:56px}
.section-head .kicker{
  display:inline-block;font-size:13px;color:var(--amber);font-weight:700;letter-spacing:1px;
  text-transform:uppercase;margin-bottom:10px;
}
.section-head h2{
  font-size:36px;color:var(--navy);margin:0 0 12px;font-weight:800;letter-spacing:-.02em;
}
.section-head p{color:var(--ink-2);max-width:680px;margin:0 auto;font-size:16px}

/* ============== TWO FACTORIES ============== */
.bg-soft{background:var(--bg)}
.factories{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
.factory-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);
}
.factory-card h3{margin:0 0 6px;font-size:20px;color:var(--navy)}
.factory-card .location{color:var(--amber);font-size:13px;font-weight:600;margin-bottom:14px}
.factory-card ul{padding-left:18px;color:var(--ink-2);font-size:15px;margin:0}
.factory-card li{margin:6px 0}
.factory-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.factory-img{
  height:180px;border-radius:12px;background:linear-gradient(135deg,#1e3a5f,#34568b);
  display:grid;place-items:center;color:#fff;font-size:14px;font-weight:600;
  background-size:cover;background-position:center;position:relative;overflow:hidden;
}
.factory-img img{width:100%;height:100%;object-fit:cover}
.factory-img .tag{position:absolute;top:10px;left:10px;background:rgba(0,0,0,.55);padding:4px 8px;border-radius:6px;font-size:11px;color:#fff;backdrop-filter:blur(4px)}
.factory-img .cap{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(0,0,0,.65));padding:18px 10px 8px;font-size:12px;color:#fff}
.factory-img.b{background:linear-gradient(135deg,#92400e,#d97706)}

/* ============== PRODUCT MATRIX ============== */
.products-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.product-card{
  position:relative;border-radius:var(--radius);overflow:hidden;
  background:#fff;border:1px solid var(--line);transition:.25s;
}
.product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--navy)}
.pc-media{
  height:280px;
  background:#fff;
  display:grid;place-items:center;color:var(--navy);font-weight:700;font-size:15px;
  position:relative;overflow:hidden;
}
/* 产品图完整显示：等比缩放铺满可视区，不裁切、不拉伸、不变形 */
.pc-media img{
  width:100%;height:100%;
  object-fit:contain;object-position:center center;
  display:block;box-sizing:border-box;
}
.pc-media .badge{
  position:absolute;top:10px;left:10px;z-index:2;
  padding:3px 9px;border-radius:999px;font-size:11px;font-weight:700;
  background:var(--amber);color:#fff;letter-spacing:.3px;
}
.pc-media .badge.stock{background:#059669}
.pc-body{padding:18px}
.pc-body h3{margin:0 0 6px;font-size:17px;color:var(--ink)}
.pc-body .model{font-size:12px;color:var(--amber);font-weight:700;letter-spacing:.4px;margin-bottom:6px}
.pc-body p{margin:0;color:var(--ink-2);font-size:13px}

/* ============== OEM STEPS ============== */
.steps{
  display:grid;grid-template-columns:repeat(5,1fr);gap:14px;
  counter-reset:s;
}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 20px;position:relative;
}
.step::before{
  counter-increment:s;content:counter(s);
  position:absolute;top:-14px;left:20px;
  width:36px;height:36px;border-radius:50%;
  background:var(--amber);color:#fff;font-weight:800;
  display:grid;place-items:center;font-size:16px;
}
.step h4{margin:10px 0 8px;font-size:16px;color:var(--navy)}
.step p{margin:0;color:var(--ink-2);font-size:13px}

/* ============== QUALITY ============== */
.quality{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:stretch}
.q-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);
}
.q-card h3{margin:0 0 16px;font-size:20px;color:var(--navy)}
.q-list{display:grid;gap:10px}
.q-item{display:flex;gap:12px;align-items:flex-start}
.q-item .dot{width:8px;height:8px;border-radius:50%;background:var(--amber);margin-top:8px;flex-shrink:0}
.q-item p{margin:0;color:var(--ink-2);font-size:14.5px}
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:10px}
.cert{
  border:1px dashed #cbd5e1;border-radius:10px;padding:14px;
  text-align:center;color:var(--ink-2);font-size:13px;font-weight:600;
}

/* ============== PARTNERS ============== */
.partners{
  display:grid;grid-template-columns:repeat(6,1fr);gap:14px;
}
.partner{
  height:80px;border:1px solid var(--line);border-radius:10px;
  display:grid;place-items:center;color:var(--muted);font-size:13px;font-weight:600;
  background:#fff;
}

/* ============== FAQ ============== */
.faq{display:grid;gap:12px;max-width:880px;margin:0 auto}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 22px;transition:.2s;
}
.faq details[open]{box-shadow:var(--shadow);border-color:#d6deea}
.faq summary{
  list-style:none;cursor:pointer;font-weight:600;color:var(--navy);font-size:16px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";font-size:22px;color:var(--amber);font-weight:300;transition:.2s;
}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{margin:12px 0 0;color:var(--ink-2);font-size:14.5px}

/* ============== CONTACT ============== */
.contact-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;
  background:linear-gradient(135deg,#0f2540,#1e3a5f);
  color:#fff;border-radius:24px;padding:48px;box-shadow:var(--shadow);
}
.contact-wrap h2{color:#fff;margin:0 0 8px;font-size:32px}
.contact-wrap p{color:rgba(255,255,255,.78);margin:0 0 24px}
.contact-info{display:grid;gap:14px}
.contact-info .row{display:flex;gap:12px;align-items:flex-start}
.contact-info .icon{
  width:36px;height:36px;border-radius:10px;
  background:rgba(255,255,255,.1);display:grid;place-items:center;flex-shrink:0;
}
.contact-info strong{display:block;margin-bottom:2px}
.contact-info span{color:rgba(255,255,255,.78);font-size:14px}
form{display:grid;gap:14px}
.field{display:grid;gap:6px}
.field label{font-size:13px;color:rgba(255,255,255,.8)}
.field input,.field textarea,.field select{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  padding:12px 14px;border-radius:10px;color:#fff;font-size:14px;
  font-family:inherit;
}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.4)}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{outline:2px solid var(--amber);outline-offset:1px}
.field select option{color:#0f172a}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}

/* ============== FOOTER ============== */
footer{
  background:#0f2540;color:rgba(255,255,255,.7);
  padding:56px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;
  margin-bottom:32px;
}
.footer-grid h4{color:#fff;margin:0 0 14px;font-size:14px;letter-spacing:.5px}
.footer-grid a{display:block;color:rgba(255,255,255,.6);font-size:14px;margin:6px 0}
.footer-grid a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-top:18px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============== BREADCRUMB / SUBPAGE HEADER ============== */
.page-header{
  background:linear-gradient(135deg,#0f2540,#1e3a5f);color:#fff;
  padding:64px 0 56px;
}
.page-header h1{font-size:42px;margin:0 0 8px;font-weight:800;letter-spacing:-.02em}
.page-header p{color:rgba(255,255,255,.78);margin:0;max-width:720px}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:14px}
.breadcrumb a{color:rgba(255,255,255,.6)}
.breadcrumb a:hover{color:#fff}

/* ============== RESPONSIVE ============== */
@media (max-width:980px){
  .hero h1{font-size:38px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .factories,.quality,.contact-wrap{grid-template-columns:1fr}
  .products-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .partners{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;
    flex-direction:column;align-items:stretch;padding:14px;border-bottom:1px solid var(--line);gap:0;}
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 24px;border-bottom:1px solid var(--line)}
  .menu-toggle{display:flex;background:transparent;border:none;color:var(--navy);cursor:pointer}
  .field-row{grid-template-columns:1fr}
}
@media (max-width:560px){
  .hero{padding:64px 0 80px}
  .hero h1{font-size:30px}
  .section-head h2{font-size:28px}
  section{padding:64px 0}
  .stats{grid-template-columns:1fr 1fr}
  .products-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .contact-wrap{padding:28px}
  .page-header h1{font-size:32px}
  /* 手机单列时产品图改为正方形，产品更大更居中 */
  .pc-media{height:auto;aspect-ratio:1/1}
}