/* ============================================================
   Corporate English Website Template
   Static corporate site  |  No cart / No ordering
   Sections: Header / Banner / Services / Brands / Solutions /
             About / Stats / Customers / News / Footer / Float widget
   ============================================================ */

/* ---------- Reset & tokens ---------- */
:root {
  --primary: #0067bc;
  --primary-dark: #015093;
  --navy: #012451;
  --accent: #00c6ee;
  --text: #333a45;
  --muted: #7a8aa0;
  --line: #e3e9f2;
  --bg-light: #f5f7fa;
  --white: #fff;
  --shadow: 0 10px 30px rgba(13, 43, 82, .10);
  --radius: 6px;
  --header-h: 78px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .25s; }
ul { list-style: none; }

.container { width: min(1200px, 92%); margin: 0 auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 11px 34px;
  border: 1px solid var(--white);
  color: var(--white);
  font-size: 14px;
  letter-spacing: 1px;
  transition: all .3s;
  cursor: pointer;
  background: transparent;
}
.btn:hover { background: var(--white); color: var(--primary); }
.btn-solid { background: var(--primary); border-color: var(--primary); }
.btn-solid:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: var(--white); }

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: var(--white);
  box-shadow: 0 2px 12px rgba(13, 43, 82, .08);
}
.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo img { height: 52px; width: auto; }

.nav { display: flex; align-items: center; }
.nav > li { position: relative; }
.nav > li > a {
  display: block;
  padding: 28px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--navy);
}
.nav > li > a:hover,
.nav > li.active > a { color: var(--primary); }
.nav > li > a::after {
  content: "";
  display: block;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform .25s;
}
.nav > li > a:hover::after,
.nav > li.active > a::after { transform: scaleX(1); }

/* dropdown */
.dropdown {
  position: absolute;
  top: 100%;
  left: 10px;
  min-width: 210px;
  background: var(--white);
  box-shadow: var(--shadow);
  border-top: 2px solid var(--primary);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .28s;
  z-index: 100;
}
.nav li:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown a {
  display: block;
  padding: 11px 20px;
  font-size: 14px;
  color: var(--text);
  border-bottom: 1px solid var(--line);
}
.dropdown a:hover { background: var(--bg-light); color: var(--primary); padding-left: 26px; }

.lang-switch {
  margin-left: 18px;
  font-weight: 700;
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 5px 13px;
  font-size: 13px;
  white-space: nowrap;
}
.lang-switch:hover { background: var(--primary); color: var(--white); }

/* hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.hamburger span {
  width: 26px;
  height: 2px;
  background: var(--navy);
  transition: all .3s;
}

/* ============================================================
   HERO BANNER (top: full-width video / bottom: navy text panel)
   ============================================================ */
.hero {
  position: relative;
  display: block;
}
.hero-photo {
  position: relative;
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1280 / 544;
  object-fit: cover;
  background: url("../images/hero-pcb.jpg") center / cover no-repeat;
}
.hero-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9, 30, 66, 0) 0%, rgba(9, 30, 66, 0) 70%, rgba(9, 30, 66, .4) 100%);
  pointer-events: none;
}
.hero-panel {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 52px clamp(28px, 5vw, 84px) 68px;
  background: linear-gradient(135deg, #011d40 0%, #012451 45%, #0a57a8 100%);
  overflow: hidden;
}
.hero-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../images/hero-pcb.jpg") center / cover no-repeat;
  opacity: .12;
  filter: hue-rotate(160deg) saturate(.5);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; color: var(--white); max-width: 1000px; margin: 0 auto; text-align: center; }
.hero-content .eyebrow {
  font-size: 18px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
  font-weight: 600;
}
.hero-content h1 {
  font-size: clamp(30px, 3.2vw, 44px);
  line-height: 1.25;
  letter-spacing: .2px;
  font-weight: 800;
  margin-bottom: 34px;
  text-wrap: pretty; /* keep a lone trailing word (e.g. "business.") on the previous line */
}
.btn-cta {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-color: transparent;
  color: var(--white);
  padding: 13px 40px;
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 600;
}
.btn-cta:hover { background: linear-gradient(90deg, var(--primary-dark), #00a5cf); border-color: transparent; color: var(--white); }

/* subpage banner */
.page-banner {
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: center;
  background: linear-gradient(100deg, #012451 0%, #015093 65%, #0090d4 100%);
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(9, 30, 66, .82), rgba(9, 30, 66, .45));
}
.page-banner .container { position: relative; color: var(--white); }
.page-banner h1 { font-size: clamp(26px, 3.4vw, 38px); letter-spacing: 2px; }
.page-banner .crumb { font-size: 13px; color: #b9cfe8; margin-top: 8px; }
.page-banner .crumb a:hover { color: var(--white); }

/* ============================================================
   SECTION HEADER (eyebrow + title)
   ============================================================ */
.section { padding: 78px 0; }
.section.bg-light { background: var(--bg-light); }

.sec-head { text-align: center; margin-bottom: 52px; }
.sec-head .eyebrow {
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--muted);
  text-transform: uppercase;
}
.sec-head h2 {
  font-size: clamp(24px, 3vw, 32px);
  color: var(--navy);
  margin: 8px 0 16px;
}
.sec-head .line {
  width: 56px;
  height: 3px;
  background: var(--primary);
  margin: 0 auto;
}
.sec-head p {
  max-width: 760px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 15px;
}

/* ============================================================
   SERVICES (home)
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .3s, box-shadow .3s;
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.service-card .pic { position: relative; overflow: hidden; aspect-ratio: 4 / 2.7; }
.service-card .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.service-card:hover .pic img { transform: scale(1.06); }
.service-card .num {
  position: absolute;
  left: 0;
  top: 14px;
  background: var(--primary);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  padding: 4px 14px 4px 12px;
  border-radius: 0 20px 20px 0;
}
.service-card .body { padding: 22px 22px 26px; }
.service-card h3 {
  font-size: 17px;
  color: var(--navy);
  margin-bottom: 10px;
  min-height: 48px;
}
.service-card p { font-size: 13.5px; color: var(--muted); }

/* ============================================================
   BRANDS
   ============================================================ */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}
.brand-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4 / 3;
  padding: 18px;
  transition: all .3s;
}
.brand-item img { max-height: 72px; max-width: 100%; width: auto; height: auto; object-fit: contain; transition: transform .3s; }
.brand-item:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-4px); }
.brand-item:hover img { transform: scale(1.07); }

/* brand detail cards (products page) */
.brand-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.brand-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  transition: transform .3s, box-shadow .3s;
}
.brand-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.brand-card .pic {
  position: relative;
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.brand-card .pic img { max-height: 84px; object-fit: contain; }
.brand-card .body { padding: 22px; }
.brand-card h3 { color: var(--navy); font-size: 16.5px; margin-bottom: 10px; }
.brand-card p { font-size: 13.5px; color: var(--muted); }

/* ============================================================
   SOLUTIONS
   ============================================================ */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.solution-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--navy);
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: var(--white);
}
.solution-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .85;
  transition: transform .5s;
}
.solution-card:hover img { transform: scale(1.07); }
.solution-card .overlay {
  position: relative;
  padding: 26px 22px;
  background: linear-gradient(180deg, transparent, rgba(9, 30, 66, .92) 55%);
}
.solution-card h3 { font-size: 18px; margin-bottom: 8px; }
.solution-card .more { font-size: 13px; color: #9fc3ec; display: inline-block; margin-top: 6px; }
.solution-card .more:hover { color: var(--white); }
/* reveal text on hover (desktop) */
.solution-card .desc {
  font-size: 13px;
  color: #d6e4f5;
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}
@media (hover: hover) {
  .solution-card:hover .desc { max-height: 170px; }
}

/* ============================================================
   ABOUT (home preview)
   ============================================================ */
.about-wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 54px; align-items: center; }
.about-wrap .pic img { max-height: 200px; width: auto; max-width: 100%; display: block; margin: 0 auto; }
.about-wrap h2 { color: var(--navy); font-size: clamp(24px, 3vw, 30px); margin-bottom: 6px; }
.about-wrap .sub { color: var(--primary); font-size: 13px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 18px; }
.about-wrap p { color: var(--muted); margin-bottom: 14px; }

.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 56px; }
.feature-card {
  text-align: center;
  padding: 34px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  transition: all .3s;
}
.feature-card:hover { box-shadow: var(--shadow); transform: translateY(-6px); border-color: transparent; }
.feature-card img { height: 62px; object-fit: contain; margin: 0 auto 18px; }
.feature-card h3 { font-size: 16px; color: var(--navy); margin-bottom: 10px; }
.feature-card p { font-size: 13px; color: var(--muted); }
.feature-card .plus { display: inline-block; margin-top: 12px; color: var(--primary); font-weight: 700; }

/* ---------- stats band ---------- */
.stats {
  background: linear-gradient(115deg, #011d40 0%, #013a75 60%, #0067bc 100%);
  color: var(--white);
  padding: 66px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.stat svg { width: 46px; height: 46px; margin: 0 auto 12px; }
.stat .num { font-size: 40px; font-weight: 700; letter-spacing: 1px; }
.stat .num span { color: var(--accent); }
.stat .label { font-size: 14px; color: #c3d6ee; margin-top: 4px; }

/* ============================================================
   CUSTOMERS
   ============================================================ */
.customers-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}
.customer-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  aspect-ratio: 8 / 5;
  transition: all .3s;
}
.customer-item img { max-height: 60px; object-fit: contain; filter: grayscale(1); opacity: .75; transition: all .3s; }
.customer-item:hover img { filter: grayscale(0); opacity: 1; }


/* ============================================================
   GENERIC CONTENT PAGES (about / quality / products...)
   ============================================================ */
.page-body { padding: 64px 0; }
.page-body.bg-light { background: var(--bg-light); }

.profile-wrap { display: grid; grid-template-columns: 1fr 1.15fr; gap: 54px; align-items: center; }
.profile-wrap img { border-radius: var(--radius); box-shadow: var(--shadow); }
.profile-wrap h2 { color: var(--navy); font-size: 26px; margin-bottom: 18px; }
.profile-wrap p { color: var(--muted); margin-bottom: 14px; text-align: justify; }

/* company stats (about page) */
.company-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 56px; }
.company-stat {
  text-align: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 18px;
  background: var(--white);
  transition: all .3s;
}
.company-stat:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.company-stat svg { width: 44px; height: 44px; margin: 0 auto 10px; }
.company-stat .num { font-size: 30px; font-weight: 700; color: var(--primary); }
.company-stat .label { font-size: 14px; color: var(--navy); font-weight: 600; }
.company-stat p { font-size: 12.5px; color: var(--muted); margin-top: 6px; }

/* gallery */
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.gallery-grid figure {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 14px rgba(13, 43, 82, .08);
}
.gallery-grid img { height: 180px; width: 100%; object-fit: cover; transition: transform .5s; }
.gallery-grid figure:hover img { transform: scale(1.06); }

/* numbered process (management page) */
.process-list { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.process-item {
  counter-increment: step;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  transition: all .3s;
}
.process-item:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.process-item img { height: 165px; width: 100%; object-fit: cover; }
.process-item .txt { padding: 20px 22px 24px; position: relative; padding-top: 30px; }
.process-item .txt::before {
  content: "0" counter(step);
  position: absolute;
  top: -20px;
  left: 20px;
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
  box-shadow: 0 4px 10px rgba(0, 103, 188, .35);
}
.process-item h3 { font-size: 15.5px; color: var(--navy); }

/* R&D */
.rd-block { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; margin-bottom: 46px; }
.rd-block img { border-radius: var(--radius); box-shadow: var(--shadow); }
.rd-block h3 { color: var(--navy); font-size: 21px; margin-bottom: 14px; }
.rd-block p { color: var(--muted); margin-bottom: 14px; }
.rd-list li {
  position: relative;
  padding: 9px 0 9px 26px;
  color: var(--text);
  font-size: 14.5px;
  border-bottom: 1px dashed var(--line);
}
.rd-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 17px;
  width: 7px;
  height: 7px;
  background: var(--primary);
  border-radius: 50%;
}
.rd-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.rd-card { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--white); transition: all .3s; }
.rd-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.rd-card img { height: 190px; width: 100%; object-fit: cover; }
.rd-card .txt { padding: 18px 20px 22px; }
.rd-card .txt h4 { color: var(--navy); font-size: 15.5px; }
.rd-card .txt span { font-size: 12.5px; color: var(--primary); }

/* quality page */
.quality-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.quality-intro img { border-radius: var(--radius); box-shadow: var(--shadow); }
.quality-intro p { color: var(--muted); margin-bottom: 14px; text-align: justify; }
.qc-block { margin-top: 54px; }
.qc-block > h3 {
  color: var(--navy);
  font-size: 20px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  margin-bottom: 20px;
}
.qc-block > p { color: var(--muted); margin-bottom: 18px; }
.qc-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.qc-col {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  transition: all .3s;
}
.qc-col:hover { box-shadow: var(--shadow); }
.qc-col h4 {
  color: var(--primary);
  font-size: 15.5px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--bg-light);
}
.qc-col li {
  position: relative;
  padding: 7px 0 7px 20px;
  font-size: 13.5px;
  color: var(--muted);
}
.qc-col li::before {
  content: "•";
  position: absolute;
  left: 2px;
  color: var(--primary);
}
.qc-single { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.qc-single p { color: var(--muted); font-size: 14.5px; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; }
.office { margin-bottom: 26px; padding-bottom: 22px; border-bottom: 1px dashed var(--line); }
.office h3 { color: var(--navy); font-size: 16.5px; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.office h3 svg { width: 18px; height: 18px; color: var(--primary); }
.office p { font-size: 14px; color: var(--muted); }
.office a:hover { color: var(--primary); }

.form-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
}
.form-card h3 { color: var(--navy); font-size: 20px; margin-bottom: 6px; }
.form-card .form-sub { font-size: 13px; color: var(--muted); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--navy); font-weight: 600; margin-bottom: 6px; }
.form-group label i { color: #d64541; font-style: normal; }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  outline: none;
  transition: border .25s;
  background: var(--bg-light);
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--primary); background: var(--white); }
.form-group textarea { min-height: 120px; resize: vertical; }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 14px; }
.form-status { font-size: 13.5px; margin-top: 12px; color: #1e8e4e; display: none; }
.form-status.show { display: block; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--navy); color: #a9bcd6; padding: 62px 0 0; font-size: 13.5px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1.2fr 1fr; gap: 40px; padding-bottom: 44px; }
.footer h4 { color: var(--white); font-size: 15.5px; margin-bottom: 18px; letter-spacing: 1px; }
.footer .f-logo { height: 44px; margin-bottom: 16px; }
.footer .f-logo-inv { filter: brightness(0) invert(1); opacity: .95; }
.footer p { line-height: 1.9; }
.footer a { color: #a9bcd6; }
.footer a:hover { color: var(--white); }
.footer ul li { padding: 4px 0; }
.footer .f-contact li {
  display: flex;
  gap: 10px;
  padding: 6px 0;
  align-items: flex-start;
}
.footer .f-contact svg { width: 16px; height: 16px; flex: 0 0 16px; margin-top: 4px; color: var(--accent); }
.f-links a { display: inline-block; margin: 0 10px 8px 0; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .10);
  padding: 18px 0;
  text-align: center;
  font-size: 12.5px;
  color: #7f94b3;
}
.footer-bottom a { color: #7f94b3; }
.footer-bottom a:hover { color: var(--white); }

/* ============================================================
   FLOATING SERVICE WIDGET (right side)
   ============================================================ */
.float-widget {
  position: fixed;
  right: 18px;
  bottom: 120px;
  z-index: 990;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.float-widget a,
.float-widget button {
  width: 46px;
  height: 46px;
  border-radius: 8px;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(0, 103, 188, .35);
  border: 0;
  cursor: pointer;
  position: relative;
  transition: background .25s, transform .25s;
}
.float-widget a:hover,
.float-widget button:hover { background: var(--primary-dark); transform: translateY(-2px); }
.float-widget svg { width: 21px; height: 21px; }
.float-widget .tip {
  position: absolute;
  right: 56px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--navy);
  color: var(--white);
  font-size: 12.5px;
  white-space: nowrap;
  padding: 7px 13px;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s;
}
.float-widget a:hover .tip { opacity: 1; }
#backTop { opacity: 0; pointer-events: none; }
#backTop.show { opacity: 1; pointer-events: auto; }

/* ============================================================
   RESPONSIVE  (fixes: original site had no mobile view at all)
   ============================================================ */
@media (max-width: 1080px) {
  .brands-grid, .customers-grid { grid-template-columns: repeat(4, 1fr); }
  .services-grid, .solutions-grid, .features-grid, .stats-grid, .company-stats { grid-template-columns: repeat(2, 1fr); }
  .brand-cards, .process-list, .qc-cols, .rd-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  .hamburger { display: flex; }
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    max-height: 0;
    overflow-y: auto;
    box-shadow: var(--shadow);
    transition: max-height .35s ease;
  }
  .nav.open { max-height: calc(100vh - var(--header-h)); }
  .nav > li > a { padding: 14px 22px; border-bottom: 1px solid var(--line); }
  .nav > li > a::after { display: none; }
  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border-top: 0;
    display: none;
    padding-left: 14px;
  }
  .nav li.sub-open .dropdown { display: block; }
  .lang-switch { margin: 12px 22px; display: inline-block; }

  .hero-photo { min-height: 0; }
  .hero-panel { padding: 44px 26px 58px; }
  .section { padding: 54px 0; }

  .about-wrap, .profile-wrap, .quality-intro, .rd-block, .contact-wrap { grid-template-columns: 1fr; gap: 32px; }

  .brands-grid, .customers-grid { grid-template-columns: repeat(3, 1fr); }
  .brand-cards, .process-list, .qc-cols, .rd-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .float-widget { right: 12px; bottom: 96px; }
  .stats { background-attachment: scroll; }
}

@media (max-width: 480px) {
  .brands-grid, .customers-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid, .solutions-grid, .features-grid, .company-stats, .stats-grid { grid-template-columns: 1fr; }
  .logo img { height: 42px; }
}

/* ============================================================
   TEMPLATE PLACEHOLDER STYLES (no third-party assets)
   ============================================================ */

/* service card icon (replaces original photos) */
.svc-ico {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #eaf2fb, #d7e6f7);
  color: var(--primary);
}
.svc-ico svg { width: 54px; height: 54px; }

/* feature card icon */
.feature-card svg.fico {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  color: var(--primary);
}

/* text brand badges (replace third-party logo images) */
.brand-item.brand-name {
  font-weight: 700;
  font-size: 13.5px;
  letter-spacing: 1px;
  color: var(--navy);
  text-align: center;
  filter: none;
}
.brand-item.brand-name:hover { color: var(--primary); }
.pic.pic-name {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 2px;
  color: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* industry solution gradient backgrounds */
.sol-bg { position: absolute; inset: 0; transition: transform .5s; }
.solution-card:hover .sol-bg { transform: scale(1.05); }
.sol-bg.b1 { background: linear-gradient(180deg, rgba(9,30,66,.18), rgba(9,30,66,.62)), url('../images/solutions/automotive.jpg') center/cover no-repeat; }
.sol-bg.b2 { background: linear-gradient(180deg, rgba(9,30,66,.18), rgba(9,30,66,.62)), url('../images/solutions/telecommunication.jpg') center/cover no-repeat; }
.sol-bg.b3 { background: linear-gradient(180deg, rgba(9,30,66,.18), rgba(9,30,66,.62)), url('../images/solutions/industrial.jpg') center/cover no-repeat; }
.sol-bg.b4 { background: linear-gradient(140deg, #2a76b8, #123c66); }

/* generic photo placeholder block */
.ph {
  width: 100%;
  height: 180px;
  border: 2px dashed #b9c9dd;
  border-radius: var(--radius);
  background: repeating-linear-gradient(45deg, #f2f6fb, #f2f6fb 12px, #eaf1f9 12px, #eaf1f9 24px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 1px;
}
.ph.tall { height: 320px; }
.ph.g { height: 100%; min-height: 180px; }
.ph.p { height: 165px; border-radius: 0; }
.ph.rc { height: 190px; border-radius: 0; }
/* placeholder slot filled with company logo (about page) */
.ph.logo-holder { background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); }
.ph.logo-holder img { max-height: 170px; max-width: 78%; width: auto; display: block; border-radius: 0; box-shadow: none; }

/* customer logo placeholder text */
.customer-item span {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 1px;
}