/* ============================================================
   HVEGE 希贵新材 — hvege.com
   Design tokens: Hvege Red #E60013 · Ink #17181C · Paper #FFF
   Type: Archivo (display) · Inter (body) · IBM Plex Mono (data)
   ZH pages add Noto Sans SC via html[lang="zh"]
   ============================================================ */

:root {
  --red: #E60013;
  --red-deep: #B8000F;
  --ink: #17181C;
  --ink-soft: #24262C;
  --graphite: #4A4D55;
  --mist: #F4F5F6;
  --paper: #FFFFFF;
  --line: #E4E5E8;
  --line-dark: #33353C;

  --font-display: "Archivo", "Noto Sans SC", sans-serif;
  --font-body: "Inter", "Noto Sans SC", -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --w-max: 1200px;
  --pad-x: clamp(20px, 4vw, 48px);
  --sec-y: clamp(72px, 9vw, 128px);
}

html[lang="zh-CN"] {
  --font-display: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Microsoft YaHei", -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--red);
  outline-offset: 3px;
}

.wrap { max-width: var(--w-max); margin: 0 auto; padding: 0 var(--pad-x); }

/* ---------- type scale ---------- */
h1, h2, h3 { font-family: var(--font-display); line-height: 1.12; letter-spacing: -0.015em; }
html[lang="zh-CN"] h1, html[lang="zh-CN"] h2, html[lang="zh-CN"] h3 { letter-spacing: 0.01em; line-height: 1.28; }

h1 { font-size: clamp(2.4rem, 5.4vw, 4.1rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); font-weight: 800; }
h3 { font-size: 1.15rem; font-weight: 700; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--red);
  display: block;
  margin-bottom: 1.1rem;
}
.dark .eyebrow { color: #FF5A64; }

.lede { font-size: 1.12rem; color: var(--graphite); max-width: 46em; }
.dark .lede { color: #B9BCC4; }

/* ---------- coating-strata divider (signature) ---------- */
.strata { display: flex; flex-direction: column; width: 88px; margin-bottom: 1.4rem; }
.strata span { height: 4px; }
.strata span:nth-child(1) { background: var(--red); width: 100%; }
.strata span:nth-child(2) { background: var(--ink); width: 72%; margin-top: 3px; }
.strata span:nth-child(3) { background: var(--line); width: 48%; margin-top: 3px; }
.dark .strata span:nth-child(2) { background: #E9EAEE; }
.dark .strata span:nth-child(3) { background: var(--line-dark); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; gap: 2rem;
  height: 72px;
  max-width: var(--w-max); margin: 0 auto; padding: 0 var(--pad-x);
}
.nav-logo img { height: 44px; width: auto; }
.nav-links { display: flex; gap: 1.6rem; list-style: none; margin-left: auto; }
.nav-links a {
  font-size: 0.92rem; font-weight: 600; color: var(--ink-soft);
  padding: 6px 2px; border-bottom: 2px solid transparent;
}
.nav-links a:hover { color: var(--red); }
.nav-lang {
  font-family: var(--font-mono); font-size: 0.85rem; font-weight: 500;
  border: 1.5px solid var(--ink); border-radius: 4px;
  padding: 6px 14px; white-space: nowrap;
}
.nav-lang:hover { background: var(--ink); color: #fff; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2.5px; background: var(--ink); margin: 5px 0; }

@media (max-width: 900px) {
  .nav-toggle { display: block; margin-left: auto; }
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; gap: 0; background: #fff;
    border-bottom: 1px solid var(--line); padding: 8px 0;
    margin-left: 0;
  }
  .nav-links.open { display: flex; }
  .nav-links a { display: block; padding: 13px var(--pad-x); border-bottom: 0; }
  .nav-lang { margin-left: auto; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block; font-weight: 700; font-size: 0.95rem;
  padding: 14px 28px; border-radius: 4px; border: 2px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-red { background: var(--red); color: #fff; }
.btn-red:hover { background: var(--red-deep); }
.btn-ghost { border-color: rgba(255,255,255,0.55); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,0.12); }
.btn-ink { border-color: var(--ink); color: var(--ink); }
.btn-ink:hover { background: var(--ink); color: #fff; }

/* ---------- hero ---------- */
.hero {
  position: relative; color: #fff;
  min-height: min(88vh, 780px);
  display: flex; flex-direction: column; justify-content: flex-end;
  isolation: isolate;
}
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -2;
  background: url("../assets/img/hero.jpg") center 30% / cover no-repeat;
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(23,24,28,0.42) 0%, rgba(23,24,28,0.18) 38%, rgba(23,24,28,0.82) 100%);
}
.hero-inner { padding: 140px var(--pad-x) 0; max-width: var(--w-max); margin: 0 auto; width: 100%; }
.hero h1 { max-width: 13.5em; text-wrap: balance; }
.hero .lede { color: #E4E6EA; margin-top: 1.3rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 2.1rem 0 3.4rem; }

.hero-stats {
  border-top: 1px solid rgba(255,255,255,0.28);
  background: rgba(23,24,28,0.55);
  backdrop-filter: blur(6px);
}
.hero-stats .wrap {
  display: grid; grid-template-columns: repeat(6, 1fr);
  gap: 1px;
}
.hero-stats .stat { padding: 20px 14px 22px; }
.stat b {
  display: block; font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.3vw, 1.9rem); font-weight: 800; line-height: 1;
}
.stat b sup { font-size: 0.55em; color: var(--red); font-weight: 800; }
.stat span {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.05em;
  text-transform: uppercase; color: #C6C9D0; display: block; margin-top: 7px; line-height: 1.45;
}
html[lang="zh-CN"] .stat span { font-family: var(--font-body); font-size: 0.8rem; letter-spacing: 0.08em; }
@media (max-width: 900px) {
  .hero-stats .wrap { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 560px) {
  .hero-stats .wrap { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- sections ---------- */
.section { padding: var(--sec-y) 0; }
.section.mist { background: var(--mist); }
.section.dark { background: var(--ink); color: #fff; }
.sec-head { max-width: 760px; margin-bottom: clamp(2.4rem, 5vw, 4rem); }

/* ---------- technology cards ---------- */
.tech-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
@media (max-width: 1020px) { .tech-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .tech-grid { grid-template-columns: 1fr; } }

.tech-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: 6px;
  padding: 30px 26px 28px; position: relative; overflow: hidden;
  display: flex; flex-direction: column; gap: 12px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.tech-card:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(23,24,28,0.10); }
.tech-card .abbr {
  font-family: var(--font-mono); font-weight: 600; font-size: 0.82rem;
  color: var(--graphite); letter-spacing: 0.1em;
}
.tech-card h3 { font-size: 1.28rem; }
.tech-card p { font-size: 0.94rem; color: var(--graphite); flex: 1; }
.tech-card .more { font-weight: 700; font-size: 0.9rem; color: var(--red); }
.badge {
  position: absolute; top: 18px; right: -1px;
  background: var(--red); color: #fff;
  font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.12em;
  padding: 5px 12px 5px 14px; border-radius: 3px 0 0 3px;
}
.tech-card.next { border-top: 3px solid var(--red); }

/* ---------- digital printing flagship ---------- */
.dp-grid {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
@media (max-width: 900px) { .dp-grid { grid-template-columns: 1fr; } }

.dp-points { list-style: none; margin: 1.8rem 0 2.2rem; display: grid; gap: 1.05rem; }
.dp-points li { padding-left: 1.5rem; position: relative; color: #D6D8DE; font-size: 0.98rem; }
.dp-points li::before {
  content: ""; position: absolute; left: 0; top: 0.52em;
  width: 9px; height: 9px; background: var(--red); border-radius: 1px;
}
.dp-points b { color: #fff; }

/* layer-stack diagram */
.stack { border: 1px solid var(--line-dark); border-radius: 8px; overflow: hidden; background: var(--ink-soft); }
.stack-row { display: flex; align-items: center; gap: 14px; padding: 13px 18px; border-bottom: 1px solid var(--line-dark); }
.stack-row:last-child { border-bottom: 0; }
.stack-chip { flex: 0 0 44px; height: 12px; border-radius: 2px; }
.stack-row .lbl { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: #9DA1AB; flex: 0 0 34%; }
html[lang="zh-CN"] .stack-row .lbl { font-family: var(--font-body); font-size: 0.84rem; }
.stack-row .val { font-size: 0.88rem; color: #E7E9ED; }
.stack-hvege { font-family: var(--font-mono); font-size: 0.68rem; color: var(--red); border: 1px solid var(--red); border-radius: 3px; padding: 1px 7px; margin-left: auto; white-space: nowrap; }

.dp-samples { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: clamp(2.4rem, 5vw, 3.6rem); }
@media (max-width: 700px) { .dp-samples { grid-template-columns: 1fr; } }
.dp-samples figure { margin: 0; }
.dp-samples img { border-radius: 6px; aspect-ratio: 16/10; object-fit: cover; width: 100%; }
.dp-samples figcaption { font-family: var(--font-mono); font-size: 0.72rem; color: #9DA1AB; margin-top: 9px; letter-spacing: 0.05em; }
html[lang="zh-CN"] .dp-samples figcaption { font-family: var(--font-body); font-size: 0.82rem; }

/* ---------- R&D ---------- */
.rd-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
@media (max-width: 900px) { .rd-grid { grid-template-columns: 1fr; } }
.rd-photos { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.rd-photos img { border-radius: 6px; object-fit: cover; width: 100%; height: 100%; }
.rd-photos img:first-child { grid-column: 1 / -1; aspect-ratio: 16/9; }
.rd-photos img:not(:first-child) { aspect-ratio: 4/3; }

.rd-facts { list-style: none; display: grid; gap: 0; margin-top: 1.6rem; border-top: 1px solid var(--line); }
.rd-facts li { display: flex; gap: 18px; padding: 15px 2px; border-bottom: 1px solid var(--line); align-items: baseline; }
.rd-facts .k {
  font-family: var(--font-display); font-weight: 800; font-size: 1.35rem;
  color: var(--red); flex: 0 0 118px; line-height: 1.1;
}
.rd-facts .v { color: var(--graphite); font-size: 0.95rem; }
.rd-facts .v b { color: var(--ink); }

/* ---------- applications ---------- */
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .app-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .app-grid { grid-template-columns: 1fr; } }
.app-tile {
  position: relative; border-radius: 6px; overflow: hidden; aspect-ratio: 4/3;
  display: flex; align-items: flex-end; color: #fff; isolation: isolate;
}
.app-tile img { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s ease; }
.app-tile:hover img { transform: scale(1.05); }
.app-tile::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(23,24,28,0) 30%, rgba(23,24,28,0.86) 100%); }
.app-tile .t { padding: 20px 22px; }
.app-tile h3 { font-size: 1.12rem; }
.app-tile p { font-size: 0.84rem; color: #CFD2D8; margin-top: 4px; }

/* ---------- customers ---------- */
.client-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line); border-left: 1px solid var(--line);
}
@media (max-width: 820px) { .client-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .client-grid { grid-template-columns: repeat(2, 1fr); } }
.client-grid span {
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 22px 14px; text-align: center;
  font-family: var(--font-display); font-weight: 700; font-size: 0.98rem;
  color: var(--ink-soft); background: var(--paper);
}
.client-note { font-size: 0.82rem; color: var(--graphite); margin-top: 14px; font-style: italic; }

/* ---------- global ---------- */
.global-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
@media (max-width: 900px) { .global-grid { grid-template-columns: 1fr; } }
.global-grid img { border-radius: 6px; }
.quote {
  border-left: 4px solid var(--red); padding-left: 20px; margin-top: 1.8rem;
  font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; line-height: 1.5;
}
.quote small { display: block; font-family: var(--font-mono); font-weight: 400; font-size: 0.75rem; color: var(--graphite); margin-top: 8px; letter-spacing: 0.08em; }

/* ---------- contact / footer ---------- */
.contact { background: var(--ink); color: #fff; padding: var(--sec-y) 0 0; }
.contact-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(2rem, 5vw, 5rem); padding-bottom: clamp(3rem, 6vw, 5rem); }
@media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; } }
.contact h2 { max-width: 12em; }
.contact-list { list-style: none; display: grid; gap: 1.15rem; margin-top: 0.6rem; }
.contact-list .lbl { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: #8B8F99; display: block; margin-bottom: 3px; }
html[lang="zh-CN"] .contact-list .lbl { font-family: var(--font-body); font-size: 0.8rem; }
.contact-list a:hover { color: #FF5A64; }
.footer-bar { border-top: 1px solid var(--line-dark); }
.footer-bar .wrap {
  display: flex; flex-wrap: wrap; gap: 12px 30px; align-items: center;
  padding-top: 22px; padding-bottom: 26px;
  font-size: 0.8rem; color: #8B8F99;
}
.footer-bar img { height: 30px; }
.footer-bar .slogan { font-style: italic; }
.footer-bar .legal { margin-left: auto; }
@media (max-width: 700px) { .footer-bar .legal { margin-left: 0; } }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ============ v2: multi-page additions ============ */

/* nav active state */
.nav-links a.active { color: var(--red); border-bottom-color: var(--red); }
.nav-logo img { height: 40px; }

/* small interior page hero */
.page-hero {
  background: var(--ink); color: #fff; position: relative; isolation: isolate;
  padding: clamp(64px, 9vw, 110px) 0 clamp(44px, 6vw, 72px);
  overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--ph-img) center / cover no-repeat;
  opacity: 0.22;
}
.page-hero h1 { font-size: clamp(2rem, 4.4vw, 3.2rem); max-width: 16em; }
.page-hero .lede { color: #C9CCD3; margin-top: 1rem; }
.crumb { font-family: var(--font-mono); font-size: 0.75rem; color: #9DA1AB; letter-spacing: 0.1em; margin-bottom: 1.6rem; display: block; }
html[lang="zh-CN"] .crumb { font-family: var(--font-body); font-size: 0.84rem; }
.crumb a:hover { color: #fff; }

/* timeline */
.timeline { list-style: none; margin-top: 2.5rem; position: relative; padding-left: 26px; }
.timeline::before { content: ""; position: absolute; left: 5px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.timeline li { position: relative; padding: 0 0 2rem 22px; }
.timeline li::before {
  content: ""; position: absolute; left: -26px; top: 7px; width: 12px; height: 12px;
  background: var(--paper); border: 3px solid var(--red); border-radius: 50%;
}
.timeline .yr { font-family: var(--font-display); font-weight: 800; font-size: 1.25rem; color: var(--red); display: block; }
.timeline p { color: var(--graphite); font-size: 0.96rem; max-width: 40em; }

/* credentials */
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .cert-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .cert-grid { grid-template-columns: 1fr; } }
.cert-card { background: var(--paper); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.cert-card img { aspect-ratio: 3/2; object-fit: cover; width: 100%; background: var(--mist); }
.cert-card figcaption, .cert-card .cap { padding: 14px 16px 16px; font-size: 0.88rem; color: var(--ink-soft); }
.cert-card .cap small { display: block; color: var(--graphite); font-size: 0.78rem; margin-top: 3px; }
.cert-list { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 28px; margin-top: 1.6rem; }
@media (max-width: 700px) { .cert-list { grid-template-columns: 1fr; } }
.cert-list li { padding: 12px 0 12px 26px; position: relative; border-bottom: 1px solid var(--line); font-size: 0.94rem; color: var(--ink-soft); }
.cert-list li::before { content: ""; position: absolute; left: 0; top: 20px; width: 12px; height: 4px; background: var(--red); }

/* client logo wall */
.logo-wall { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
@media (max-width: 1000px) { .logo-wall { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 620px) { .logo-wall { grid-template-columns: repeat(3, 1fr); } }
.logo-wall img {
  width: 100%; aspect-ratio: 2/1; object-fit: contain; background: #fff;
  border: 1px solid var(--line); border-radius: 6px; padding: 10px;
  filter: grayscale(35%); transition: filter 0.2s ease, transform 0.2s ease;
}
.logo-wall img:hover { filter: none; transform: translateY(-3px); }

/* global footprint diagram */
.footprint { border: 1px solid var(--line); border-radius: 8px; background:
  linear-gradient(var(--mist) 1px, transparent 1px), linear-gradient(90deg, var(--mist) 1px, transparent 1px);
  background-size: 28px 28px; padding: clamp(24px, 4vw, 44px); }
.fp-nodes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; position: relative; }
@media (max-width: 700px) { .fp-nodes { grid-template-columns: 1fr; } }
.fp-node { background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--red); border-radius: 6px; padding: 18px 20px; }
.fp-node.hq { border-left-color: var(--ink); background: var(--ink); color: #fff; }
.fp-node .tag { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--red); }
html[lang="zh-CN"] .fp-node .tag { font-family: var(--font-body); font-size: 0.78rem; }
.fp-node.hq .tag { color: #FF5A64; }
.fp-node h3 { font-size: 1.05rem; margin: 6px 0 4px; }
.fp-node p { font-size: 0.85rem; color: var(--graphite); }
.fp-node.hq p { color: #C9CCD3; }
.fp-meta { display: flex; flex-wrap: wrap; gap: 10px 34px; margin-top: 22px; padding-top: 18px; border-top: 1px dashed var(--line); }
.fp-meta .stat b { font-size: 1.5rem; color: var(--ink); }
.fp-meta .stat span { color: var(--graphite); text-transform: none; letter-spacing: 0.02em; }

/* pictogram application tiles */
.picto-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .picto-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .picto-grid { grid-template-columns: 1fr; } }
.picto-card { border: 1px solid var(--line); border-radius: 6px; padding: 26px 24px; background: var(--paper); transition: transform 0.18s ease, box-shadow 0.18s ease; }
.picto-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(23,24,28,0.08); }
.picto-card svg { width: 54px; height: 54px; display: block; margin-bottom: 16px; }
.picto-card h3 { font-size: 1.08rem; margin-bottom: 6px; }
.picto-card p { font-size: 0.88rem; color: var(--graphite); }
.picto-card .series { margin-top: 12px; font-family: var(--font-mono); font-size: 0.72rem; color: var(--graphite); letter-spacing: 0.03em; line-height: 1.8; }
html[lang="zh-CN"] .picto-card .series { font-family: var(--font-body); font-size: 0.82rem; }

/* footer v2 */
.footer-cols { display: grid; grid-template-columns: 1.3fr 1fr 1fr auto; gap: clamp(1.6rem, 4vw, 4rem); padding: clamp(2.6rem, 5vw, 4rem) 0; }
@media (max-width: 900px) { .footer-cols { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-cols { grid-template-columns: 1fr; } }
.footer-logo-card { background: #fff; display: inline-block; padding: 10px 14px; border-radius: 6px; }
.footer-logo-card img { height: 40px; }
.footer-cols h4 { font-size: 0.85rem; letter-spacing: 0.1em; text-transform: uppercase; color: #8B8F99; margin-bottom: 14px; font-family: var(--font-mono); font-weight: 500; }
html[lang="zh-CN"] .footer-cols h4 { font-family: var(--font-body); letter-spacing: 0.2em; }
.footer-cols ul { list-style: none; display: grid; gap: 9px; font-size: 0.92rem; }
.footer-cols a:hover { color: #FF5A64; }
.footer-cols p { font-size: 0.9rem; color: #C9CCD3; }
.qr-box { text-align: center; }
.qr-box img { width: 150px; height: 150px; border-radius: 6px; background: #fff; padding: 6px; margin: 0 auto 8px; }
.qr-box span { font-size: 0.78rem; color: #9DA1AB; display: block; }

/* three-across system cards, responsive */
.tech-grid.cols3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 1020px) { .tech-grid.cols3 { grid-template-columns: 1fr; } }

/* dual QR codes */
.qr-row { display: flex; gap: 16px; justify-content: flex-end; flex-wrap: wrap; }
@media (max-width: 900px) { .qr-row { justify-content: flex-start; } }
.qr-box img { object-fit: contain; }
.qr-box.light img { width: 150px; height: 150px; border: 1px solid var(--line); border-radius: 6px; background: #fff; padding: 6px; margin: 0 auto 8px; display: block; }
.qr-box.light span { font-size: 0.78rem; color: var(--graphite); display: block; text-align: center; }

/* ============ v5: light footer — brand logo displayed unmodified ============ */
footer.contact { background: var(--mist); color: var(--ink); border-top: 1px solid var(--line); }
footer.contact .footer-cols h4 { color: var(--graphite); }
footer.contact .footer-cols p { color: var(--graphite); }
footer.contact .footer-cols a:hover { color: var(--red); }
footer.contact .footer-bar { border-top: 1px solid var(--line); }
footer.contact .footer-bar .wrap { color: var(--graphite); }
footer.contact .qr-box img { border: 1px solid var(--line); }
footer.contact .qr-box span { color: var(--graphite); }

/* larger customer logo wall */
.logo-wall { grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 1000px) { .logo-wall { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 620px) { .logo-wall { grid-template-columns: repeat(2, 1fr); } }
.logo-wall img { padding: 8px; filter: none; }