/* ===== B2B Printing Factory Site - shared styles ===== */
:root{
  --navy:#0b1f3a;
  --navy-2:#122c4f;
  --blue:#1d4ed8;
  --orange:#f97316;
  --orange-d:#ea580c;
  --green:#16a34a;
  --text:#1e293b;
  --muted:#64748b;
  --line:#e2e8f0;
  --bg:#ffffff;
  --bg-soft:#f8fafc;
  --radius:10px;
  --max:1160px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
}
.header-in{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--navy);letter-spacing:-.3px}
.logo-mark{
  width:34px;height:34px;border-radius:8px;background:var(--navy);
  color:#fff;display:grid;place-items:center;font-size:15px;font-weight:800;
}
.nav{display:flex;align-items:center;gap:26px;font-size:14.5px;font-weight:500}
.nav a{color:#334155;padding:6px 0;border-bottom:2px solid transparent;transition:.15s}
.nav a:hover{color:var(--blue);border-bottom-color:var(--blue)}
.header-cta{display:flex;align-items:center;gap:10px}

/* ---------- Products 下拉导航 ---------- */
.nav-item{position:relative}
.nav-item > a{display:flex;align-items:center;gap:5px}
.has-dropdown > a::after{content:"▾";font-size:10px;color:#94a3b8;transition:.15s}
.has-dropdown:hover > a::after{color:var(--blue)}

.dropdown{
  position:absolute;top:100%;left:-14px;min-width:250px;background:#fff;
  border:1px solid var(--line);border-radius:10px;padding:8px;
  box-shadow:0 18px 36px -18px rgba(15,23,42,.3);
  opacity:0;visibility:hidden;transform:translateY(6px);transition:.15s;
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown{
  opacity:1;visibility:visible;transform:translateY(0);
}
.dropdown a{
  display:block;padding:9px 12px;border-radius:6px;
  font-size:14px;color:#334155;border-bottom:0;transition:.12s;
}
.dropdown a:hover{background:#f1f5f9;color:var(--blue);border-bottom-color:transparent}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:8px;font-size:14.5px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;transition:.15s;white-space:nowrap;
}
.btn-wa{background:var(--green);color:#fff}
.btn-wa:hover{background:#128a3e;transform:translateY(-1px)}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-d);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--navy);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--navy)}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-block{width:100%}

/* ---------- Hero ---------- */
.hero{
  background:
    radial-gradient(900px 420px at 80% -10%,rgba(29,78,216,.28),transparent 60%),
    linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 100%);
  color:#fff;padding:76px 0 68px;
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:#93c5fd;background:rgba(147,197,253,.12);border:1px solid rgba(147,197,253,.25);
  padding:6px 12px;border-radius:100px;margin-bottom:20px;
}
.hero h1{font-size:clamp(30px,4.2vw,46px);line-height:1.15;letter-spacing:-1px;font-weight:800;margin-bottom:18px}
.hero p.lead{font-size:17px;color:#cbd5e1;max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.hero-note{font-size:13px;color:#94a3b8;display:flex;flex-wrap:wrap;gap:18px}
.hero-note span{display:flex;align-items:center;gap:6px}
.hero-note span::before{content:"✓";color:#4ade80;font-weight:800}
.hero-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:14px;padding:24px;
}
.hero-card h3{font-size:14px;text-transform:uppercase;letter-spacing:.08em;color:#93c5fd;margin-bottom:16px}
.spec-row{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px dashed rgba(255,255,255,.14);font-size:14px}
.spec-row:last-child{border-bottom:0}
.spec-row dt{color:#94a3b8}
.spec-row dd{font-weight:600;text-align:right}

/* ---------- Sections ---------- */
.section{padding:72px 0}
.section.soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:680px;margin-bottom:40px}
.sec-head h2{font-size:clamp(24px,3vw,32px);letter-spacing:-.6px;font-weight:800;color:var(--navy);margin-bottom:10px}
.sec-head p{color:var(--muted);font-size:15.5px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- Product grid ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:.18s;display:flex;flex-direction:column;
}
.card:hover{border-color:#c7d2fe;box-shadow:0 12px 28px -14px rgba(15,23,42,.22);transform:translateY(-2px)}
.card-img{aspect-ratio:16/10;background:linear-gradient(135deg,#e2e8f0,#cbd5e1);overflow:hidden;position:relative}
.card-img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s ease}
.card:hover .card-img img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
.card-body h3{font-size:16.5px;font-weight:700;color:var(--navy);letter-spacing:-.2px}
.card-body p{font-size:13.5px;color:var(--muted);flex:1}
.card-link{font-size:13.5px;font-weight:700;color:var(--blue);margin-top:6px}
.card-link::after{content:" →";transition:.15s}
.card:hover .card-link::after{margin-left:4px}

/* ---------- Trust ---------- */
.trust-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.trust-item .ico{
  width:40px;height:40px;border-radius:9px;background:#eff6ff;color:var(--blue);
  display:grid;place-items:center;font-size:18px;margin-bottom:14px;
}
.trust-item h3{font-size:15.5px;font-weight:700;color:var(--navy);margin-bottom:6px}
.trust-item p{font-size:13.5px;color:var(--muted)}

/* ---------- Spec table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:14.5px;min-width:520px}
table.spec caption{
  text-align:left;padding:16px 18px;font-weight:700;color:var(--navy);
  border-bottom:1px solid var(--line);background:var(--bg-soft);font-size:14px;
}
table.spec th,table.spec td{padding:13px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
table.spec th{width:34%;font-weight:600;color:#475569;background:#fcfdff}
table.spec tr:last-child th,table.spec tr:last-child td{border-bottom:0}
table.spec td strong{color:var(--navy)}

/* ---------- Case ---------- */
.case-card{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--orange);
  border-radius:8px;padding:22px 24px;
}
.case-card h4{font-size:15px;font-weight:700;color:var(--navy);margin-bottom:8px}
.case-card p{font-size:14px;color:#475569}
.case-meta{font-size:12.5px;color:var(--muted);margin-top:12px;display:flex;gap:16px;flex-wrap:wrap}

/* ---------- Contact / Form ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:16px;margin-top:26px}
.contact-list li{display:flex;gap:14px;align-items:flex-start}
.contact-list .ico{
  flex:0 0 40px;width:40px;height:40px;border-radius:9px;background:#f1f5f9;
  display:grid;place-items:center;font-size:17px;
}
.contact-list strong{display:block;font-size:14px;color:var(--navy);margin-bottom:2px}
.contact-list span,.contact-list a{font-size:14px;color:var(--muted)}
.contact-list a:hover{color:var(--blue)}

form.inquiry{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px;box-shadow:0 18px 40px -28px rgba(15,23,42,.25)}
form.inquiry h3{font-size:18px;font-weight:800;color:var(--navy);margin-bottom:4px}
form.inquiry .form-sub{font-size:13.5px;color:var(--muted);margin-bottom:20px}
.field{margin-bottom:15px}
.field label{display:block;font-size:13px;font-weight:600;color:#334155;margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;font-size:14.5px;font-family:inherit;color:var(--text);
  border:1.5px solid var(--line);border-radius:8px;background:#fff;transition:.15s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(29,78,216,.12);
}
.field textarea{resize:vertical;min-height:92px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-foot{font-size:12.5px;color:var(--muted);margin-top:12px;text-align:center}

/* ---------- Breadcrumb / Product page ---------- */
.breadcrumb{font-size:13px;color:var(--muted);padding:18px 0}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb span{margin:0 7px;color:#cbd5e1}
.product-hero{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start;padding-bottom:56px}
.product-hero h1{font-size:clamp(26px,3.4vw,36px);letter-spacing:-.8px;font-weight:800;color:var(--navy);margin-bottom:14px;line-height:1.2}
.product-hero .lead{font-size:16px;color:#475569;margin-bottom:22px}
.product-img{
  aspect-ratio:4/3;border-radius:12px;overflow:hidden;
  border:1px solid var(--line);background:#f1f5f9;
}
.product-img img{width:100%;height:100%;object-fit:cover;display:block}
.quick-cta{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 18px}
.badge-row{display:flex;flex-wrap:wrap;gap:8px}
.badge{font-size:12px;font-weight:600;padding:5px 11px;border-radius:100px;background:#f1f5f9;color:#475569;border:1px solid var(--line)}
.badge.green{background:#f0fdf4;color:#15803d;border-color:#bbf7d0}

/* ---------- Gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:16px}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:8px;border:1px solid var(--line)}

/* ---------- Floating WhatsApp ---------- */
.wa-float{
  position:fixed;right:20px;bottom:20px;z-index:200;
  width:58px;height:58px;border-radius:50%;background:var(--green);
  display:grid;place-items:center;box-shadow:0 10px 26px -6px rgba(22,163,74,.55);
  transition:.18s;
}
.wa-float:hover{transform:scale(1.07);background:#128a3e}
.wa-float svg{width:30px;height:30px;fill:#fff}
.wa-float::after{
  content:"";position:absolute;inset:0;border-radius:50%;
  border:2px solid var(--green);animation:pulse 2.2s ease-out infinite;
}
@keyframes pulse{0%{transform:scale(1);opacity:.7}100%{transform:scale(1.5);opacity:0}}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#94a3b8;padding:52px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;margin-bottom:36px}
.site-footer h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:14px;letter-spacing:.02em}
.site-footer p{font-size:13.5px;line-height:1.7}
.site-footer ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.site-footer ul a{font-size:13.5px}
.site-footer ul a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;font-size:12.5px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---------- Mobile ---------- */
.menu-toggle{display:none;background:none;border:0;font-size:22px;cursor:pointer;color:var(--navy);padding:6px}
@media(max-width:900px){
  .hero-grid,.contact-grid,.product-hero{grid-template-columns:1fr}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero{padding:52px 0 48px}
  .section{padding:52px 0}
}
@media(max-width:680px){
  .menu-toggle{display:block}
  .nav{
    display:none;position:absolute;top:68px;left:0;right:0;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 16px;
    border-bottom:1px solid var(--line);box-shadow:0 16px 24px -18px rgba(15,23,42,.3);
  }
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line)}
  .nav a:last-child{border-bottom:0}
  .header-cta .btn{padding:9px 13px;font-size:13px}
  .grid-3,.grid-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .gallery{grid-template-columns:1fr}

  .nav-item{width:100%}
  .nav-item > a{justify-content:space-between;border-bottom:1px solid var(--line)}
  .has-dropdown > a::after{content:"▾"}
  .dropdown{
    position:static;display:none;opacity:1;visibility:visible;transform:none;
    box-shadow:none;border:0;padding:0 0 6px 14px;min-width:0;
  }
  .has-dropdown.open .dropdown{display:block}
  .dropdown a{padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}
  .dropdown a:last-child{border-bottom:0}
}