/* TZD Display — shared stylesheet
   B2B commercial display / digital signage manufacturer.
   Lightweight, semantic, AI-crawl-friendly. */
:root{
  --navy:#0b2545;
  --navy-2:#13315c;
  --blue:#1d6fe0;
  --blue-2:#2e8bff;
  --ink:#1e2a3a;
  --muted:#5b6b7e;
  --line:#e3e9f0;
  --bg:#ffffff;
  --bg-soft:#f5f8fc;
  --bg-navy:#0b2545;
  --accent:#ff8a3d;
  --ok:#1f9d6b;
  --radius:14px;
  --maxw:1140px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;font-size:16px;
}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{color:var(--navy);line-height:1.25;margin:0 0 .5em}
h1{font-size:clamp(28px,4vw,42px)}
h2{font-size:clamp(22px,3vw,30px)}
h3{font-size:20px}
p{margin:0 0 1em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* Header */
.site-header{background:var(--navy);color:#fff;position:sticky;top:0;z-index:20;box-shadow:0 2px 12px rgba(0,0,0,.12)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:18px}
.brand:hover{text-decoration:none}
.brand .logo{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--blue),var(--accent));display:grid;place-items:center;font-weight:800;color:#fff;font-size:15px}
.nav{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.nav a{color:#dce6f2;font-size:15px}
.nav a:hover,.nav a.active{color:#fff;text-decoration:none}
.nav a.active{font-weight:700}
.nav-toggle{display:none;background:none;border:1px solid #33567f;color:#fff;border-radius:8px;padding:6px 10px;cursor:pointer}
@media(max-width:860px){
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--navy-2);flex-direction:column;padding:14px 20px;gap:12px}
  .nav.open{display:flex}
  .nav-toggle{display:block}
}

/* Hero */
.hero{background:radial-gradient(1200px 400px at 80% -10%,rgba(46,139,255,.25),transparent),var(--bg-navy);color:#fff;padding:64px 0}
.hero h1{color:#fff}
.hero .sub{font-size:19px;color:#cfe0f3;max-width:760px}
.hero .cta{margin-top:26px;display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 22px;border-radius:10px;font-weight:700;font-size:15px;cursor:pointer;border:0}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-2);text-decoration:none}
.btn-ghost{background:transparent;color:#fff;border:1px solid #3f6699}
.btn-ghost:hover{background:rgba(255,255,255,.08);text-decoration:none}
.hero .tags{margin-top:22px;display:flex;gap:10px;flex-wrap:wrap}
.hero .tags span{background:rgba(255,255,255,.1);border:1px solid #2f547d;color:#dceaff;padding:6px 12px;border-radius:999px;font-size:13px}

/* Sections */
section{padding:54px 0}
.sec-soft{background:var(--bg-soft)}
.sec-head{margin-bottom:30px}
.sec-head p{color:var(--muted);max-width:720px}
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}}

/* Cards */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.15s}
.card:hover{box-shadow:0 8px 24px rgba(11,37,69,.08);transform:translateY(-2px)}
.card h3{margin-top:0}
.card .ico{width:42px;height:42px;border-radius:10px;background:var(--bg-soft);display:grid;place-items:center;margin-bottom:12px;font-size:20px}
.card .spec{font-size:14px;color:var(--muted);margin-top:8px}
.card a.more{font-weight:600;font-size:14px;display:inline-block;margin-top:10px}

/* Product table */
table.spec{border-collapse:collapse;width:100%;margin:18px 0;font-size:14px}
table.spec th,table.spec td{border:1px solid var(--line);padding:9px 12px;text-align:left}
table.spec th{background:var(--bg-soft);color:var(--navy);font-weight:700}
table.spec td:first-child{font-weight:600;color:var(--ink);width:38%}

/* FAQ */
.faq{margin:18px 0}
.faq details{border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin-bottom:10px;background:#fff}
.faq summary{font-weight:700;color:var(--navy);cursor:pointer}
.faq p{margin:.6em 0 0;color:var(--muted)}

/* Callout */
.callout{background:#fff;border-left:4px solid var(--blue);border-radius:10px;padding:18px 20px;margin:20px 0}
.callout.warn{border-color:var(--accent)}
.callout.ok{border-color:var(--ok)}

/* CTA banner */
.cta-band{background:var(--navy);color:#fff;border-radius:var(--radius);padding:34px;text-align:center}
.cta-band h2{color:#fff}
.cta-band .btn-primary{background:var(--accent);color:#1a1205}
.cta-band .btn-primary:hover{background:#ffa05c}

/* Breadcrumb */
.crumb{font-size:13px;color:var(--muted);padding:16px 0 0}
.crumb a{color:var(--muted)}

/* Footer */
.site-footer{background:var(--bg-navy);color:#bcccdd;padding:46px 0 28px;margin-top:30px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:12px}
.site-footer a{color:#bcccdd}
.site-footer a:hover{color:#fff}
.site-footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:26px}
@media(max-width:800px){.site-footer .cols{grid-template-columns:1fr 1fr}}
.foot-note{margin-top:30px;padding-top:18px;border-top:1px solid #1d3a5e;font-size:13px;color:#8aa0b8}
.foot-note a{color:#8aa0b8}

/* Two column layout */
.cols-2{display:grid;grid-template-columns:1.3fr .9fr;gap:34px;align-items:start}
@media(max-width:820px){.cols-2{grid-template-columns:1fr}}

/* Pills / badges */
.badge{display:inline-block;background:var(--bg-soft);color:var(--navy);border:1px solid var(--line);border-radius:999px;padding:4px 11px;font-size:12.5px;margin:3px 4px 3px 0}
.certs{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0}
.cert{background:#eef5ff;border:1px solid #cfe0ff;color:var(--navy-2);border-radius:8px;padding:6px 12px;font-weight:700;font-size:13px}

/* Contact form */
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;margin-bottom:6px;color:var(--navy)}
.field input,.field textarea,.field select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:9px;font-size:15px;font-family:inherit}
.field textarea{min-height:110px}
.form-note{font-size:13px;color:var(--muted)}
.contact-box{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.contact-box .row{margin-bottom:10px}
.contact-box .row b{color:var(--navy)}

/* Misc */
.lead{font-size:18px;color:var(--muted)}
.muted{color:var(--muted)}
.center{text-align:center}
.mt0{margin-top:0}
.img-row{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:18px 0}
@media(max-width:620px){.img-row{grid-template-columns:1fr}}
.hero-img{background:#0e2c52;border-radius:12px;min-height:220px;display:grid;place-items:center;color:#5e86b3;font-size:14px;border:1px solid #1d3a5e}

/* Products page v2 — trust anchors + hub cards */
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 6px}
.trust-pill{display:inline-block;font-size:12.5px;font-weight:700;color:#0a7d4b;background:rgba(23,199,132,.10);border:1px solid rgba(23,199,132,.35);border-radius:999px;padding:6px 14px}
.hub-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:34px 0 6px}
.hub-card{display:block;background:var(--bg-soft,#f4f7fb);border:1px solid var(--line,#dbe3ee);border-radius:14px;padding:18px 20px;color:inherit;text-decoration:none;transition:border-color .15s,transform .15s}
.hub-card:hover{text-decoration:none;border-color:#2f9bff;transform:translateY(-2px)}
.hub-card h4{margin:0 0 6px;font-size:16px;color:var(--navy,#0d2b52)}
.hub-card p{margin:0;font-size:13.5px;color:var(--muted,#5b6b7e);line-height:1.5}
@media(max-width:720px){.hub-row{grid-template-columns:1fr}}

/* ===== TZD Display unified chrome (matches homepage) — 2026-08-18 ===== */
.topbar {
  position: sticky; top: 0; z-index: 50; height: 56px;
  display: flex; align-items: center;
  backdrop-filter: saturate(180%) blur(22px); -webkit-backdrop-filter: saturate(180%) blur(22px);
  background: rgba(251,251,253,0.78);
  border-bottom: 1px solid rgba(0,0,0,0.10);
}
.topbar-inner {
  width: min(1240px, calc(100vw - 28px)); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  font-size: 12px;
}
.topbar .brand {
  display: flex; align-items: center; gap: 8px; flex-shrink: 0;
  font-weight: 800; font-size: 15px; color: #1d1d1f; text-decoration: none;
}
.topbar .brand span { white-space: nowrap; }
.topbar .brand:hover { text-decoration: none; }
.topbar .navlinks {
  display: flex; align-items: center; gap: 22px; font-weight: 600;
  color: rgba(29,29,31,0.78);
}
.topbar .navlinks a { transition: color 0.2s; color: inherit; text-decoration: none; }
.topbar .navlinks a:hover { color: #0071e3; text-decoration: none; }
.topbar .navlinks a.active { color: #0071e3; font-weight: 700; }
.topbar .topbar-right { display: flex; align-items: center; gap: 10px; }
.lang-switcher {
  display: flex; gap: 2px; padding: 3px; border-radius: 999px;
  background: rgba(0,0,0,0.05); position: relative;
}
.lang-btn {
  min-width: 34px; height: 28px; padding: 0 8px; border: 0; border-radius: 999px;
  background: transparent; color: rgba(29,29,31,0.6); font-size: 11px; font-weight: 700;
  transition: all 0.2s; cursor: pointer; text-decoration: none; display: inline-flex;
  align-items: center; justify-content: center; font-family: inherit;
}
.lang-btn:hover { color: rgba(29,29,31,0.92); background: rgba(0,0,0,0.05); text-decoration: none; }
.lang-btn.active { background: #1d1d1f; color: #fff; box-shadow: 0 2px 6px rgba(0,0,0,0.14); }
.lang-btn.active:hover { background: #1d1d1f; color: #fff; }
/* dropdown language switcher */
.lang-dropdown { position: relative; display: inline-block; }
.lang-dropdown > summary {
  list-style: none; cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
  min-width: 42px; height: 38px; padding: 0 10px; border: 1px solid rgba(0,0,0,0.12);
  border-radius: 999px; background: #fff; color: #1d1d1f; font-size: 16px; line-height: 1;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08); user-select: none; -webkit-user-select: none;
}
.lang-dropdown > summary::-webkit-details-marker { display: none; }
.lang-dropdown > summary::marker { content: ""; }
.lang-dropdown > summary:hover, .lang-dropdown[open] > summary { background: #f5f5f7; border-color: rgba(0,0,0,0.20); }
.lang-menu {
  position: absolute; top: calc(100% + 8px); right: 0; z-index: 60;
  min-width: 152px; max-height: min(70vh, 410px); overflow-y: auto; display: grid; gap: 3px; padding: 7px;
  background: #fff; border: 1px solid rgba(0,0,0,0.10); border-radius: 12px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.18);
}
.lang-menu .lang-btn {
  display: flex; align-items: center; justify-content: flex-start;
  width: 100%; min-width: 0; height: 38px; padding: 0 13px; border-radius: 9px;
  background: transparent; color: rgba(29,29,31,0.78); font-size: 13px;
}
.lang-menu .lang-btn:hover { background: rgba(0,0,0,0.05); color: #1d1d1f; }
.lang-menu .lang-btn.active { background: #1d1d1f; color: #fff; }
.lang-menu .lang-btn.active:hover { background: #1d1d1f; color: #fff; }
/* pill (Get Quote) */
.pill {
  min-height: 32px; padding: 0 14px; border: none; border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  background: #0071e3; color: #fff; font-size: 12px; font-weight: 700;
  transition: background 0.2s; text-decoration: none; cursor: pointer;
  -webkit-appearance: none; appearance: none;
}
.pill:hover { background: #0058b0; text-decoration: none; }
/* footer (dark, matches homepage) */
footer {
  background: #050506; color: rgba(255,255,255,0.7); padding: 56px 24px 32px;
}
.footer-inner {
  width: min(1240px, calc(100vw - 32px)); margin: 0 auto;
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr; gap: 32px;
}
.footer-brand b { color: #fff; font-size: 17px; font-weight: 800; }
.footer-brand p { margin: 12px 0 0; font-size: 13px; line-height: 1.55; color: rgba(255,255,255,0.6); }
.footer-col h4 {
  color: #fff; font-size: 13px; font-weight: 800; text-transform: uppercase;
  letter-spacing: 0.06em; margin: 0 0 14px;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer-col a { font-size: 13px; color: rgba(255,255,255,0.7); transition: color 0.2s; text-decoration: none; }
.footer-col a:hover { color: #fff; text-decoration: none; }
.footer-bottom {
  width: min(1240px, calc(100vw - 32px)); margin: 32px auto 0; padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08); display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 12px; font-size: 12px; color: rgba(255,255,255,0.5);
}
.footer-bottom .last-updated { color: rgba(255,255,255,0.5); }
/* responsive chrome */
@media (max-width: 1024px){ .footer-inner { grid-template-columns: 1fr 1fr; } }
@media (max-width: 768px){
  .lang-btn { min-width: 40px; height: 32px; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 640px){
  .topbar-inner { font-size: 11px; gap: 8px; }
  .topbar { height: 50px; }
  .topbar .brand { gap: 6px; font-size: 13px; }
  .topbar .navlinks { display: none; }
  .footer-inner { grid-template-columns: 1fr; }
  .topbar-right .pill { padding: 0 10px; font-size: 11px; min-height: 30px; }
}