/* Premium — charcoal + warm stone + champagne accent */
:root {
  --primary: #252d38;
  --primary-dark: #12161c;
  --primary-mid: #5c6570;
  --primary-light: #f5f4f1;
  --highlight: #a89478;
  --highlight-light: #d4c9b8;
  --accent: #12161c;
  --accent-hover: #2a3140;
  --accent-light: rgba(18, 22, 28, 0.04);
  --tech: #3d4a58;
  --tech-dark: #252d38;
  --text: #1a1f26;
  --text-light: #5c6570;
  --text-muted: #8a9199;
  --border: #e6e4e0;
  --bg-light: #faf9f7;
  --bg-section: #f5f4f1;
  --topbar-bg: #faf9f7;
  --footer-bg: #f5f4f1;
  --max-width: 1280px;
  --header-h: 78px;
  --shadow-brand: rgba(18, 22, 28, 0.06);
  --shadow-accent: rgba(18, 22, 28, 0.14);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "PingFang SC", "Helvetica Neue", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  line-height: 1.65;
  background: #fff;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color .2s, background .2s; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* ── Top bar ── */
.topbar {
  background: var(--topbar-bg);
  color: var(--text-light);
  font-size: 12px;
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 34px;
  flex-wrap: wrap;
  gap: 8px;
}
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.topbar a { color: var(--text-light); }
.topbar a:hover { color: var(--primary-dark); }
.topbar .contact-now {
  background: var(--accent);
  color: #fff !important;
  padding: 5px 20px;
  border-radius: 3px;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.02em;
}
.topbar .contact-now:hover { background: var(--accent-hover); color: #fff !important; }

/* ── Social icons ── */
.social-icons {
  display: flex;
  align-items: center;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 4px;
  transition: opacity .2s, transform .2s;
}
.social-icons a:hover { opacity: .85; transform: translateY(-1px); }
.social-icons svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}
.social-icon--facebook a { color: #1877f2; }
.social-icon--youtube a { color: #606060; }
.social-icon--linkedin a { color: #0a66c2; }
.social-icon--instagram a { color: #e4405f; }
.social-icon--tiktok a { color: #010101; }
.social-icon--whatsapp a { color: #25d366; }
.social-icons--sm { gap: 6px; }
.social-icons--sm a { width: 24px; height: 24px; }
.social-icons--sm svg { width: 18px; height: 18px; }
.social-icons--light { margin-top: 16px; }
.social-icons--light a { background: rgba(0,0,0,.06); }
.social-icons--light a:hover { background: rgba(0,0,0,.1); color: var(--primary-dark) !important; }

/* ── Header ── */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 1px 0 rgba(15, 22, 32, 0.04);
}
.header-main {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 16px;
}
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  flex-shrink: 0;
}
.logo-icon {
  width: 52px; height: 52px;
  background: var(--primary-light);
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  color: var(--primary-dark); font-weight: 800; font-size: 22px;
  letter-spacing: -1px;
}
.logo-text h1 {
  font-size: 17px;
  color: var(--primary-dark);
  line-height: 1.25;
  font-weight: 700;
  max-width: 280px;
}
.logo-text p { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.main-nav { display: flex; align-items: stretch; flex: 1; justify-content: center; }
.main-nav > li { position: relative; }
.main-nav > li > a {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  border-bottom: 3px solid transparent;
  white-space: nowrap;
  transition: color .2s, border-color .2s;
}
.main-nav > li > a:hover,
.main-nav > li.active > a {
  color: var(--primary-dark);
  border-bottom-color: var(--highlight);
  background: transparent;
}
.main-nav .has-dropdown > a::after {
  content: "";
  display: inline-block;
  width: 0; height: 0;
  margin-left: 6px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  vertical-align: middle;
}

/* Mega dropdown */
.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  background: #fff;
  box-shadow: 0 12px 32px rgba(0,0,0,.14);
  border-top: 2px solid var(--highlight);
  z-index: 200;
  padding: 8px 0;
}
.main-nav li:hover > .dropdown { display: block; }
.dropdown > li > a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-dark);
  border-bottom: 1px solid var(--border);
}
.dropdown > li > a:hover { background: var(--primary-light); color: var(--primary-dark); }
.dropdown .sub-dropdown { background: #fafafa; padding: 4px 0 8px; }
.dropdown .sub-dropdown a {
  display: block;
  padding: 7px 20px 7px 32px;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-light);
  border: none;
}
.dropdown .sub-dropdown a:hover { color: var(--primary-dark); background: #fff; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.lang-select {
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 2px;
  font-size: 12px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 22px;
  color: var(--primary-dark);
  padding: 8px;
}

/* ── Hero carousel (full width) ── */
.hero {
  position: relative;
  background: var(--primary-dark);
  overflow: hidden;
}
.hero .container {
  position: relative;
  max-width: 100%;
  padding: 0;
}
.hero-slide {
  display: none;
  min-height: 460px;
  background: #888;
  color: #fff;
  align-items: center;
  position: relative;
  background-size: cover;
  background-position: center;
}
.hero-slide.active { display: flex; }
.hero-slide.has-image::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,.55) 0%, rgba(0,0,0,.25) 60%, rgba(0,0,0,.1) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  padding: 80px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}
.hero-content h2 {
  font-size: 40px;
  margin-bottom: 14px;
  line-height: 1.2;
  font-weight: 700;
  text-shadow: 0 2px 8px rgba(0,0,0,.2);
}
.hero-content p { font-size: 17px; opacity: .92; margin-bottom: 28px; max-width: 520px; }

.hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 44px; height: 44px;
  border: none;
  background: rgba(255,255,255,.2);
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  border-radius: 2px;
  transition: background .2s;
}
.hero-arrow:hover { background: rgba(255,255,255,.35); }
.hero-arrow.prev { left: 16px; }
.hero-arrow.next { right: 16px; }

.hero-dots {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 3;
}
.hero-dots button {
  width: 12px; height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,.6);
  background: transparent;
  cursor: pointer;
  padding: 0;
}
.hero-dots button.active { background: #fff; border-color: #fff; }

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 13px 32px;
  border-radius: 3px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background .25s, box-shadow .25s, transform .2s;
  letter-spacing: 0.02em;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 12px var(--shadow-accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  box-shadow: 0 4px 20px var(--shadow-accent);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  border: 2px solid rgba(255,255,255,.85);
  color: #fff;
  margin-left: 10px;
}
.btn-outline:hover { background: rgba(255,255,255,.15); color: #fff; }
.btn-blue { background: var(--primary-dark); color: #fff; }
.btn-blue:hover { background: var(--primary); color: #fff; }

/* ── Section titles ── */
.section { padding: 56px 0; }
.section-title { text-align: center; margin-bottom: 36px; }
.section-title h2 {
  font-size: 28px;
  color: var(--primary-dark);
  font-weight: 600;
  letter-spacing: 0.04em;
  position: relative;
  display: inline-block;
  padding-bottom: 18px;
}
.section-title h2::before { display: none; }
.section-title h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 1px;
  background: var(--highlight);
}
.section-title p { margin-top: 10px; color: var(--text-light); font-size: 14px; }

.section-band {
  background: var(--bg-section);
  color: var(--primary-dark);
  text-align: center;
  padding: 16px 0;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* ── Product center navigation ── */
.product-nav-section { padding: 0; background: #fff; }
.product-nav-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.product-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 22px 12px;
  text-align: center;
  border-right: 1px solid var(--border);
  transition: .25s;
  min-height: 120px;
}
.product-nav-item:last-child { border-right: none; }
.product-nav-item:hover {
  background: var(--accent-light);
  color: var(--primary-dark);
}
.product-nav-item .pn-icon {
  width: 56px; height: 56px;
  margin-bottom: 10px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border);
  font-size: 24px;
  transition: border-color .2s;
}
.product-nav-item:hover .pn-icon { border-color: var(--highlight-light); }
.product-nav-item .pn-icon img { width: 100%; height: 100%; object-fit: cover; }
.product-nav-item span {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}
.product-nav-item:hover span { color: var(--primary-dark); }

/* ── Company stats strip ── */
.company-stats {
  background: var(--bg-section);
  padding: 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.company-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.company-stat {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
  color: var(--primary-dark);
}
.company-stat + .company-stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 48px;
  background: var(--border);
}
.company-stat-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--highlight);
  margin-bottom: 14px;
}
.company-stat-icon svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.company-stat-num {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.5px;
}
.company-stat-label {
  margin-top: 8px;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-light);
  line-height: 1.4;
  max-width: 160px;
}

/* ── About (Jinda split layout) ── */
.about-jinda { background: #fff; }
.about-jinda-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}
.about-jinda-left { position: relative; }
.about-jinda-title {
  font-size: 72px;
  font-weight: 900;
  line-height: .9;
  color: var(--primary-dark);
  opacity: .06;
  letter-spacing: -2px;
  user-select: none;
  margin-bottom: -20px;
}
.about-jinda-heading {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 20px;
  line-height: 1.3;
}
.about-jinda-text p {
  color: var(--text-light);
  margin-bottom: 14px;
  font-size: 14px;
  line-height: 1.8;
}
.about-facility-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 28px;
}
.about-facility-tab {
  height: 140px;
  background: var(--primary-light);
  border-radius: 4px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  position: relative;
}
.about-facility-tab::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(transparent 40%, rgba(15, 22, 32, 0.55));
}
.about-facility-tab .tab-placeholder {
  position: relative;
  z-index: 1;
  width: 100%;
  text-align: center;
  padding-bottom: 12px;
  font-size: 36px;
}

/* Legacy about grid (inner pages) */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.about-image {
  height: 320px;
  background: var(--primary-light);
  border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 64px;
}
.about-text p { margin-bottom: 16px; color: var(--text-light); }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.stat-item {
  text-align: center;
  padding: 20px 14px;
  background: var(--bg-light);
  border-left: 2px solid var(--highlight);
}
.stat-item .num { font-size: 28px; font-weight: 700; color: var(--primary-dark); }
.stat-item .label { font-size: 12px; color: var(--text-light); margin-top: 4px; }

/* ── Scenarios ── */
.scenario-section { background: var(--bg-section); }
.oem-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.oem-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px 20px;
}
.oem-card h3 { font-size: 1rem; margin: 0 0 10px; color: var(--primary); }
.oem-card p { margin: 0; font-size: 0.9rem; color: #666; line-height: 1.6; }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.scenario-card {
  position: relative;
  height: 240px;
  border-radius: 2px;
  overflow: hidden;
  background: #ccc;
  display: block;
}
.scenario-card .overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 24px 20px;
  background: linear-gradient(transparent, rgba(0,0,0,.75));
  color: #fff;
  font-size: 16px;
  font-weight: 700;
}
.scenario-card:hover .overlay { background: linear-gradient(transparent, rgba(0,0,0,.88)); }

/* ── Product grid ── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.product-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: box-shadow .3s, transform .3s, border-color .3s;
  display: block;
}
.product-card:hover {
  box-shadow: 0 12px 40px var(--shadow-brand);
  border-color: var(--border);
  transform: translateY(-2px);
}
.product-card .thumb {
  height: 190px;
  background: var(--bg-light);
  display: flex; align-items: center; justify-content: center;
  color: #ccc; font-size: 40px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.product-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.product-card:hover .thumb img { transform: scale(1.05); }
.product-card .info { padding: 14px 16px; }
.product-card .info h3 {
  font-size: 14px;
  margin-bottom: 6px;
  color: var(--text);
  font-weight: 600;
  line-height: 1.4;
}
.product-card .info p { font-size: 12px; color: var(--text-muted); line-height: 1.5; }

/* ── Company info bar ── */
.company-bar {
  background: var(--primary-light);
  color: var(--text);
  padding: 28px 0;
  border-top: 1px solid var(--border);
}
.company-bar-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  font-size: 13px;
}
.company-bar-grid > div {
  padding-left: 16px;
  border-left: 1px solid var(--highlight-light);
}
.company-bar-grid strong {
  display: block;
  font-size: 11px;
  color: var(--text-light);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* ── Footer ── */
.site-footer { background: var(--footer-bg); color: var(--text-light); font-size: 13px; border-top: 1px solid var(--border); }
.footer-main { padding: 44px 0 36px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer-grid h4 {
  color: var(--primary-dark);
  margin-bottom: 18px;
  font-size: 15px;
  font-weight: 700;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--highlight);
  display: inline-block;
}
.footer-grid ul li { margin-bottom: 8px; }
.footer-grid a:hover { color: var(--primary-dark); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 16px 0;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}
.footer-admin-link {
  margin-left: 12px;
  color: var(--text-muted);
  text-decoration: none;
  opacity: 0.7;
}
.footer-admin-link:hover {
  color: var(--primary-dark);
  opacity: 1;
}

/* ── Floating sidebar ── */
.float-sidebar {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  box-shadow: -2px 0 12px rgba(0,0,0,.08);
}
.float-sidebar a {
  writing-mode: vertical-rl;
  padding: 16px 11px;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  text-align: center;
  letter-spacing: 0.15em;
}
.float-sidebar .fs-about { background: var(--tech); }
.float-sidebar .fs-about:hover { background: var(--tech-dark); }
.float-sidebar .fs-inquiry { background: var(--primary-dark); color: #fff; }
.float-sidebar .fs-inquiry:hover { background: var(--accent-hover); color: #fff; }
.float-sidebar .fs-contact { background: var(--primary); }
.float-sidebar .fs-contact:hover { background: var(--primary-dark); }

/* ── Mobile bottom nav ── */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: #fff;
  box-shadow: 0 -2px 12px rgba(0,0,0,.1);
  z-index: 1000;
  grid-template-columns: repeat(5, 1fr);
  text-align: center;
  font-size: 10px;
  border-top: 1px solid var(--border);
}
.mobile-bottom-nav a {
  padding: 8px 4px;
  color: var(--text-light);
  font-weight: 600;
}
.mobile-bottom-nav a:hover { color: var(--primary-dark); }

/* ── Forms ── */
.form-page { max-width: 640px; margin: 0 auto; }
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 3px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.form-control:focus { outline: none; border-color: var(--primary-mid); box-shadow: 0 0 0 3px var(--accent-light); }
.form-control--textarea { min-height: 140px; resize: vertical; line-height: 1.65; }
.form-control--file {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-light);
  background: var(--bg-light);
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-dark);
  letter-spacing: 0.02em;
}
.form-group label .required { color: var(--highlight); font-weight: 700; }
.form-group--full { grid-column: 1 / -1; }
.form-hint { margin-top: 6px; font-size: 12px; color: var(--text-muted); }
.form-note { font-size: 12px; color: var(--text-light); margin-bottom: 20px; line-height: 1.6; }

/* ── Inquiry form ── */
.inquiry-section { background: var(--bg-section); }
.inquiry-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
  align-items: start;
  max-width: 960px;
  margin: 0 auto;
}
.inquiry-aside { padding-top: 8px; }
.inquiry-aside-lead {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary-dark);
  line-height: 1.4;
  margin-bottom: 10px;
}
.inquiry-aside-sub {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 28px;
}
.inquiry-aside-list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  border-top: 1px solid var(--border);
}
.inquiry-aside-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text);
  line-height: 1.5;
}
.inquiry-aside-list li span {
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.inquiry-aside-list a { color: var(--primary-dark); text-decoration: underline; text-underline-offset: 2px; }
.inquiry-privacy {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.65;
  padding-left: 14px;
  border-left: 2px solid var(--highlight-light);
}
.inquiry-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 36px 40px 32px;
  box-shadow: 0 8px 32px var(--shadow-brand);
}
.inquiry-form-heading {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.inquiry-form-block { margin-bottom: 8px; }
.inquiry-form-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 28px 0 24px;
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.inquiry-form-divider::before,
.inquiry-form-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}
.inquiry-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 20px;
}
.inquiry-form-actions {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.btn-inquiry-submit {
  min-width: 160px;
  padding: 14px 40px;
}
@media (max-width: 768px) {
  .inquiry-layout { grid-template-columns: 1fr; gap: 28px; }
  .inquiry-card { padding: 24px 20px; }
  .inquiry-form-grid { grid-template-columns: 1fr; gap: 0; }
}

/* ── Messages ── */
.messages { list-style: none; margin: 0; }
.messages li { padding: 12px 20px; text-align: center; font-size: 14px; }
.messages .success { background: #d4edda; color: #155724; }
.messages .error { background: #f8d7da; color: #721c24; }

/* ── Breadcrumb ── */
.breadcrumb {
  padding: 12px 0;
  font-size: 12px;
  color: var(--text-light);
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
}
.breadcrumb a { color: var(--primary-dark); }
.breadcrumb a:hover { text-decoration: underline; }

/* ── Page hero ── */
.page-hero {
  background: var(--bg-section);
  color: var(--primary-dark);
  padding: 44px 0;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.page-hero h1 { font-size: 30px; font-weight: 700; letter-spacing: 1px; }
.page-hero--about {
  padding: 52px 0 48px;
  background: linear-gradient(180deg, var(--bg-section) 0%, #fff 100%);
}
.page-hero-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--highlight);
  margin-bottom: 12px;
}
.page-hero--about h1 {
  font-size: clamp(24px, 4vw, 36px);
  max-width: 820px;
  margin: 0 auto 14px;
  line-height: 1.35;
}
.page-hero-sub {
  max-width: 640px;
  margin: 0 auto;
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.7;
}

/* ── About page ── */
.about-page { padding-top: 48px; padding-bottom: 64px; }
.about-lead {
  max-width: 820px;
  margin: 0 auto 32px;
  text-align: center;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-light);
}
.about-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
}
.about-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-light);
}
.about-badge strong {
  color: var(--primary-dark);
  font-weight: 600;
}
.about-content {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.about-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px 26px;
}
.about-panel--intro {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: center;
  padding: 0;
  overflow: hidden;
  background: var(--bg-light);
}
.about-panel-visual {
  min-height: 260px;
  background: linear-gradient(145deg, var(--primary-dark) 0%, var(--tech) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.about-visual-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  width: 100%;
}
.about-visual-item {
  aspect-ratio: 1;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
}
.about-visual-item:first-child { grid-row: span 2; font-size: 52px; }
.about-panel--intro .about-panel-body {
  padding: 32px 32px 32px 0;
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.85;
}
.about-panel--intro .about-panel-body p { margin-bottom: 14px; }
.about-panel--intro .about-panel-body p:last-child { margin-bottom: 0; }
.about-panel--steps { grid-column: 1 / -1; }
.about-panel-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--highlight-light);
}
.about-panel-desc {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 16px;
}
.about-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.about-list li {
  position: relative;
  padding-left: 18px;
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.65;
}
.about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--highlight);
}
.about-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  counter-reset: about-step;
}
.about-steps li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 16px;
  background: var(--bg-light);
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-light);
}
.about-step-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-dark);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-cta {
  margin-top: 48px;
  border-radius: 8px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--tech) 100%);
}
.about-cta-inner {
  padding: 44px 32px;
  text-align: center;
  color: #fff;
}
.about-cta-inner h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
}
.about-cta-inner p {
  max-width: 520px;
  margin: 0 auto 24px;
  font-size: 14px;
  line-height: 1.7;
  opacity: 0.88;
}
.about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.about-cta .btn-primary {
  background: #fff;
  color: var(--primary-dark);
  border-color: #fff;
}
.about-cta .btn-primary:hover {
  background: var(--highlight-light);
  border-color: var(--highlight-light);
}
.about-cta .btn-outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}
.about-cta .btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}
.about-fallback {
  max-width: 820px;
  margin: 0 auto;
  color: var(--text-light);
  line-height: 1.85;
}
.about-fallback p { margin-bottom: 14px; }

/* ── Video feed (Douyin-style) ── */
body.is-video-feed .company-bar,
body.is-video-feed .site-footer,
body.is-video-feed .float-sidebar {
  display: none;
}
body.is-video-feed .mobile-bottom-nav {
  background: rgba(10, 10, 10, 0.92);
  border-top-color: #222;
}
body.is-video-feed .mobile-bottom-nav a {
  color: rgba(255, 255, 255, 0.65);
}
body.is-video-feed .mobile-bottom-nav a:hover {
  color: #fff;
}
.video-page { position: relative; }
.video-page-breadcrumb {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 5;
  background: linear-gradient(180deg, rgba(0,0,0,.45), transparent);
  border: none;
  color: rgba(255,255,255,.85);
}
.video-page-breadcrumb a { color: #fff; }
.video-feed-wrap {
  position: relative;
  background: #0a0a0a;
  height: calc(100dvh - 112px);
  min-height: 520px;
  display: flex;
  justify-content: center;
}
body.is-video-feed .video-feed-wrap {
  height: calc(100dvh - 112px - 52px);
}
.video-feed {
  width: 100%;
  max-width: 420px;
  height: 100%;
  overflow-y: auto;
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.video-feed::-webkit-scrollbar { display: none; }
.video-feed-item {
  position: relative;
  height: 100%;
  min-height: 100%;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  background: #111;
}
.video-feed-player {
  position: absolute;
  inset: 0;
  background: #000;
  cursor: pointer;
}
.video-feed-player video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.video-feed-btn {
  position: absolute;
  z-index: 2;
  border: none;
  background: rgba(0,0,0,.45);
  color: #fff;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition: background .2s, opacity .2s;
}
.video-feed-btn:hover { background: rgba(0,0,0,.65); }
.video-feed-btn svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.video-feed-play {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  background: rgba(255,255,255,.2);
}
.video-feed-play svg {
  width: 28px;
  height: 28px;
  fill: #fff;
  stroke: none;
  margin-left: 4px;
}
.video-feed-item.is-playing .video-feed-play {
  opacity: 0;
  pointer-events: none;
}
.video-feed-mute {
  right: 16px;
  bottom: 100px;
}
.video-feed-mute .icon-unmuted { display: none; }
.video-feed-mute:not(.is-muted) .icon-muted { display: none; }
.video-feed-mute:not(.is-muted) .icon-unmuted { display: block; }
.video-feed-info {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 48px 20px 28px;
  background: linear-gradient(transparent, rgba(0,0,0,.75));
  color: #fff;
  pointer-events: none;
}
.video-feed-info h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.35;
}
.video-feed-info p {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255,255,255,.8);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-feed-hint {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  font-size: 12px;
  color: rgba(255,255,255,.55);
  pointer-events: none;
  animation: video-hint-bounce 2s ease-in-out infinite;
  transition: opacity .3s;
}
.video-feed-hint.is-hidden { opacity: 0; }
@keyframes video-hint-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-6px); }
}
.video-empty {
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
  padding: 48px 20px 64px;
}
.video-empty-icon {
  width: 88px;
  height: 88px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--text-muted);
}
.video-empty p {
  color: var(--text-light);
  margin-bottom: 24px;
  line-height: 1.7;
}

/* ── Contact ── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info-item { margin-bottom: 24px; }
.contact-info-item h4 { color: var(--primary-dark); margin-bottom: 6px; font-size: 15px; }

/* Category pills on product list */
.cat-pills { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.cat-pills a {
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 500;
  background: var(--primary-dark);
  color: #fff;
  border-radius: 3px;
}
.cat-pills a:hover { background: var(--accent-hover); color: #fff; }

/* Product detail */
.product-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.product-detail-img {
  background: var(--bg-light);
  border: 1px solid var(--border);
  min-height: 360px;
  display: flex; align-items: center; justify-content: center;
  font-size: 64px; color: #ccc;
}
.product-detail-img img { width: 100%; object-fit: contain; max-height: 400px; }
.product-detail-info h1 { font-size: 24px; color: var(--primary-dark); margin-bottom: 16px; }
.product-detail-info .summary { color: var(--text-light); margin-bottom: 20px; line-height: 1.8; }

/* ── Responsive ── */
@media (max-width: 1100px) {
  .product-nav-grid { grid-template-columns: repeat(3, 1fr); }
  .product-nav-item:nth-child(3n) { border-right: none; }
  .product-nav-item { border-bottom: 1px solid var(--border); }
}
@media (max-width: 992px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .company-stats-grid, .stats-grid, .company-bar-grid { grid-template-columns: repeat(2, 1fr); }
  .oem-grid { grid-template-columns: repeat(2, 1fr); }
  .company-stat + .company-stat::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-jinda-inner, .about-grid { grid-template-columns: 1fr; }
  .about-content { grid-template-columns: 1fr; }
  .about-panel--intro { grid-template-columns: 1fr; }
  .about-panel--intro .about-panel-body { padding: 24px; }
  .about-panel-visual { min-height: 180px; }
  .hero-content h2 { font-size: 30px; }
}
@media (max-width: 768px) {
  .main-nav { display: none; }
  .menu-toggle { display: block; }
  .hero-slide { min-height: 320px; }
  .hero-content { padding: 50px 20px; }
  .hero-content h2 { font-size: 24px; }
  .hero-arrow { display: none; }
  .product-nav-grid { grid-template-columns: repeat(2, 1fr); }
  .company-stats-grid { grid-template-columns: 1fr 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
  .oem-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .float-sidebar { display: none; }
  .mobile-bottom-nav { display: grid; }
  .video-feed-wrap { height: calc(100dvh - 112px - 52px); }
  .video-feed-mute { bottom: 88px; }
  body { padding-bottom: 52px; }
  .contact-grid, .product-detail-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .about-jinda-title { font-size: 48px; }
  .about-facility-tabs { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .product-grid { grid-template-columns: 1fr; }
  .company-stats-grid { grid-template-columns: 1fr; }
  .company-bar-grid { grid-template-columns: 1fr; }
}

/* ── Insights ── */
.insight-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.insight-grid--compact { grid-template-columns: repeat(4, 1fr); gap: 20px; }
.insight-empty { grid-column: 1 / -1; text-align: center; color: var(--text-light); padding: 48px 0; }
.insight-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: box-shadow .3s, transform .3s;
}
.insight-card:hover {
  box-shadow: 0 12px 40px var(--shadow-brand);
  transform: translateY(-2px);
}
.insight-card-thumb {
  aspect-ratio: 16 / 10;
  background: var(--bg-light);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.insight-card-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.insight-card:hover .insight-card-thumb img { transform: scale(1.04); }
.insight-card-placeholder { font-size: 28px; color: var(--text-muted); opacity: .5; }
.insight-card-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.insight-card-date {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}
.insight-card-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--primary-dark);
  line-height: 1.4;
  margin-bottom: 8px;
}
.insight-card-body p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.65;
  flex: 1;
}
.insight-card-more {
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--highlight);
}
.insight-article-inner { max-width: 800px; }
.insight-article-header { margin-bottom: 32px; text-align: center; }
.insight-article-date {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.insight-article-header h1 {
  font-size: 34px;
  font-weight: 600;
  color: var(--primary-dark);
  line-height: 1.25;
  margin-bottom: 14px;
}
.insight-article-excerpt {
  font-size: 17px;
  color: var(--text-light);
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto;
}
.insight-article-cover {
  margin-bottom: 40px;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.insight-article-cover img { width: 100%; display: block; }
.insight-body {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}
.insight-body h2,
.insight-body h3,
.insight-body h4 {
  color: var(--primary-dark);
  font-weight: 600;
  margin: 2em 0 0.75em;
  line-height: 1.35;
}
.insight-body h2 { font-size: 24px; }
.insight-body h3 { font-size: 20px; }
.insight-body h4 { font-size: 17px; }
.insight-body p { margin-bottom: 1.25em; }
.insight-body ul,
.insight-body ol { margin: 0 0 1.25em 1.4em; }
.insight-body li { margin-bottom: 0.5em; }
.insight-body blockquote {
  margin: 1.5em 0;
  padding: 16px 24px;
  border-left: 2px solid var(--highlight);
  background: var(--bg-light);
  color: var(--text-light);
  font-style: italic;
}
.insight-body img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin: 1.5em 0;
}
.insight-body a {
  color: var(--primary-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.insight-body a:hover { color: var(--highlight); }
.insight-related { background: var(--bg-section); border-top: 1px solid var(--border); }
@media (max-width: 992px) {
  .insight-grid { grid-template-columns: repeat(2, 1fr); }
  .insight-grid--compact { grid-template-columns: repeat(2, 1fr); }
  .insight-article-header h1 { font-size: 28px; }
}
@media (max-width: 600px) {
  .insight-grid,
  .insight-grid--compact { grid-template-columns: 1fr; }
}

/* Mobile menu */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 2000;
}
.mobile-nav.open { display: block; }
.mobile-nav-panel {
  width: 300px;
  height: 100%;
  background: #fff;
  overflow-y: auto;
  padding: 20px;
  box-shadow: 4px 0 20px rgba(0,0,0,.15);
}
.mobile-nav-panel a {
  display: block;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  color: var(--text);
}
.mobile-nav-panel a:hover { color: var(--primary-dark); }
.mobile-nav-panel .sub a { padding-left: 20px; font-size: 13px; font-weight: 400; color: var(--text-light); }