/* ── Variables ── */
:root {
  --navy: #1B245C;
  --navy-dark: #131B45;
  --navy-light: #2A3578;
  --navy-hover: #0E163A;
  --body-text: #221815;
  --gray: #595757;
  --gray-light: #8A8A8A;
  --border: #E2E4E9;
  --bg-light: #F6F7FA;
  --bg-white: #FFFFFF;
  --accent-warm: #C4572A;
  --success: #1A7A4C;
  --font-en: 'Barlow', sans-serif;
  --font-cn: 'Noto Sans SC', sans-serif;
  --font-display: 'Barlow Semi Condensed', sans-serif;
  --max-w: 1200px;
  --header-h: 64px;
}

/* ── Reset ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body {
  font-family: var(--font-en);
  color: var(--body-text);
  background: var(--bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ── Utility Bar ── */
.utility-bar {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.8);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}
.utility-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 36px;
}
.utility-left {
  display: flex;
  gap: 24px;
  align-items: center;
}
.utility-left span { display: flex; align-items: center; gap: 6px; }
.utility-left svg { width: 13px; height: 13px; opacity: 0.7; }
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  overflow: hidden;
}
.lang-btn {
  padding: 4px 12px;
  font-size: 0.72rem;
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  transition: all 0.2s;
  letter-spacing: 0.03em;
}
.lang-btn.active {
  background: rgba(255,255,255,0.15);
  color: #fff;
}
.lang-btn:hover:not(.active) { color: rgba(255,255,255,0.8); }

/* ── Header / Nav ── */
.site-header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow 0.3s;
}
.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--header-h);
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-img {
  height: 32px;
  width: auto;
}
.logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--navy);
  line-height: 1.15;
}
.logo-text small {
  display: block;
  font-family: var(--font-cn);
  font-weight: 400;
  font-size: 0.62rem;
  color: var(--gray);
  letter-spacing: 0.05em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--gray);
  transition: color 0.2s;
  position: relative;
  padding: 4px 0;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--navy);
  transition: width 0.25s;
}
.nav-link:hover { color: var(--navy); }
.nav-link:hover::after { width: 100%; }
.nav-cta {
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  background: var(--navy);
  padding: 10px 24px;
  border-radius: 6px;
  transition: all 0.2s;
  letter-spacing: 0.02em;
}
.nav-cta:hover {
  background: var(--navy-hover);
  box-shadow: 0 4px 12px rgba(27,36,92,0.25);
  transform: translateY(-1px);
}

/* ── Hero ── */
.hero {
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 72px 32px 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--gray);
  margin-bottom: 24px;
}
.hero-badge .dot {
  width: 7px; height: 7px;
  background: var(--success);
  border-radius: 50%;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: 3.1rem;
  font-weight: 800;
  line-height: 1.08;
  color: var(--navy);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.hero h1 span { color: var(--navy-light); }
.hero .tagline {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero .tagline .sep {
  width: 4px; height: 4px;
  background: var(--navy-light);
  border-radius: 50%;
  opacity: 0.5;
}
.hero .sub {
  font-size: 1.05rem;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-btns {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
}
.btn-primary {
  font-family: var(--font-en);
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  background: var(--navy);
  padding: 14px 28px;
  border-radius: 6px;
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
}
.btn-primary:hover {
  background: var(--navy-hover);
  box-shadow: 0 6px 20px rgba(27,36,92,0.3);
  transform: translateY(-1px);
}
.btn-outline {
  font-family: var(--font-en);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--navy);
  background: var(--bg-white);
  padding: 14px 28px;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
}
.btn-outline:hover {
  border-color: var(--navy);
  background: rgba(27,36,92,0.03);
}
.hero-certs {
  display: flex;
  align-items: center;
  gap: 16px;
}
.cert-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--gray);
  text-decoration: none;
}
.cert-icon {
  width: 28px; height: 28px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--success);
  font-weight: 700;
}
.hero-visual { position: relative; }
.hero-img {
  border-radius: 12px;
  aspect-ratio: 4/3;
  object-fit: cover;
  width: 100%;
  border: 1px solid var(--border);
}
.hero-floating-stat {
  position: absolute;
  bottom: -16px;
  left: -16px;
  background: var(--bg-white);
  border-radius: 10px;
  padding: 16px 22px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  border: 1px solid var(--border);
}
.hero-floating-stat .num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--navy);
  line-height: 1;
}
.hero-floating-stat .lbl {
  font-size: 0.72rem;
  color: var(--gray);
  margin-top: 2px;
}

/* ── Client Logos Trust Bar ── */
.trust-bar {
  padding: 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-white);
}
.trust-bar-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
}
.trust-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  white-space: nowrap;
  flex-shrink: 0;
}
.trust-logos {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
  justify-content: center;
  flex: 1;
}
.trust-logos img {
  height: 32px;
  width: auto;
  opacity: 0.55;
  transition: opacity 0.2s;
  filter: grayscale(30%);
  object-fit: contain;
}
.trust-logos img:hover { opacity: 1; filter: none; }

/* ── Section Common ── */
.section { padding: 80px 32px; }
.section-inner { max-width: var(--max-w); margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--navy-light);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.section-desc {
  font-size: 1rem;
  color: var(--gray);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Services Tabs ── */
.services-section {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
}
.tabs-nav {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 40px;
}
.tab-btn {
  flex: 1;
  padding: 16px 12px;
  font-family: var(--font-en);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gray);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.tab-btn svg { width: 18px; height: 18px; opacity: 0.5; transition: opacity 0.2s; }
.tab-btn:hover { color: var(--navy); }
.tab-btn:hover svg { opacity: 0.8; }
.tab-btn.active { color: var(--navy); border-bottom-color: var(--navy); }
.tab-btn.active svg { opacity: 1; }
.tab-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  animation: fadeIn 0.35s ease;
}
.tab-panel.active { display: grid; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.tab-img {
  border-radius: 10px;
  aspect-ratio: 3/2;
  object-fit: cover;
  width: 100%;
  border: 1px solid var(--border);
}
.tab-content h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 12px;
}
.tab-content p {
  font-size: 0.95rem;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 20px;
}
.tab-specs {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.tab-specs li {
  font-size: 0.82rem;
  color: var(--body-text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.tab-specs li::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--navy);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── How It Works ── */
.how-section { background: var(--bg-light); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.how-steps {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: flex-start;
}
.how-step { text-align: center; padding: 0 20px; }
.step-num {
  width: 52px; height: 52px;
  background: var(--navy);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 auto 16px;
}
.how-step h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}
.how-step p { font-size: 0.85rem; color: var(--gray); line-height: 1.6; }
.step-arrow {
  display: flex;
  align-items: center;
  padding-top: 16px;
}
.step-arrow svg { width: 32px; height: 32px; color: var(--navy-light); opacity: 0.3; }

/* ── Stats Bar ── */
.stats-bar {
  background: var(--navy);
  color: #fff;
  padding: 56px 32px;
  position: relative;
  overflow: hidden;
}
.stats-bar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, transparent, transparent 300px, rgba(255,255,255,0.02) 300px, rgba(255,255,255,0.02) 301px);
  pointer-events: none;
}
.stats-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
}
.stat-item { text-align: center; }
.stat-num {
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-num span { font-size: 1.6rem; opacity: 0.7; }
.stat-label { font-size: 0.82rem; opacity: 0.65; letter-spacing: 0.04em; }

/* ── Product Gallery ── */
.gallery-section { background: var(--bg-white); border-bottom: 1px solid var(--border); }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.gallery-card {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.25s;
  background: #fff;
}
.gallery-card:hover {
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
  transform: translateY(-3px);
}
.gallery-card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.gallery-card h4 {
  padding: 10px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--navy);
  text-align: center;
}

/* ── Industries ── */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.industry-card {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px 22px;
  text-align: center;
  transition: all 0.25s;
}
.industry-card:hover {
  border-color: var(--navy);
  box-shadow: 0 6px 20px rgba(27,36,92,0.08);
  transform: translateY(-3px);
}
.industry-icon {
  width: 48px; height: 48px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-size: 1.4rem;
}
.industry-card h3 { font-size: 0.88rem; font-weight: 600; color: var(--navy); }

/* ── Advantages ── */
.advantages-section { background: var(--bg-white); }
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.advantage-card {
  padding: 32px 24px;
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: all 0.25s;
}
.advantage-card:hover {
  box-shadow: 0 8px 24px rgba(27,36,92,0.06);
  transform: translateY(-2px);
}
.adv-icon {
  width: 44px; height: 44px;
  background: rgba(27,36,92,0.06);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.3rem;
}
.advantage-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}
.advantage-card p { font-size: 0.85rem; color: var(--gray); line-height: 1.65; }

/* ── Materials ── */
.materials-section { background: var(--bg-light); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.materials-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}
.material-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: all 0.25s;
}
.material-card:hover {
  box-shadow: 0 6px 16px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}
.material-card img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
}
.material-card h4 {
  padding: 12px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--navy);
  text-align: center;
}
.surface-label {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 16px;
}
.surface-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.surface-tag {
  padding: 8px 18px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--body-text);
  transition: all 0.2s;
}
.surface-tag:hover { border-color: var(--navy); color: var(--navy); }

/* ── Cert tags ── */
.cert-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }
.cert-tag {
  padding: 8px 18px;
  background: var(--navy);
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #fff;
}

/* ── Factory ── */
.factory-section { background: var(--bg-light); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.factory-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 12px;
}
.factory-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
}
.factory-grid .fg-main { grid-row: 1 / 3; }

/* ── Quality ── */
.quality-section { background: var(--bg-white); }
.quality-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.cert-area h3, .inspect-area h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 16px;
}
.cert-list { display: flex; gap: 16px; margin-bottom: 24px; }
.cert-list img {
  width: 90px;
  height: 120px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.cert-area p { font-size: 0.9rem; color: var(--gray); line-height: 1.7; }
.inspect-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.inspect-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-light);
  border-radius: 8px;
  border: 1px solid var(--border);
}
.inspect-item .ii-icon {
  width: 36px; height: 36px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.inspect-item .ii-text {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--body-text);
  line-height: 1.35;
}
.inspect-item .ii-text small {
  display: block;
  font-weight: 400;
  color: var(--gray);
  font-size: 0.7rem;
}

/* ── Contact ── */
.contact-section { background: var(--bg-white); border-top: 1px solid var(--border); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-info h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 24px;
}
.contact-row {
  display: flex;
  gap: 14px;
  margin-bottom: 20px;
  align-items: flex-start;
}
.contact-row .cr-icon {
  width: 36px; height: 36px;
  background: rgba(27,36,92,0.06);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.9rem;
}
.contact-row .cr-text {
  font-size: 0.88rem;
  color: var(--body-text);
  line-height: 1.5;
}
.contact-row .cr-text strong {
  display: block;
  font-weight: 600;
  margin-bottom: 2px;
}
.map-placeholder {
  background: linear-gradient(135deg, #dde0ea 0%, #c8ccd9 100%);
  border-radius: 10px;
  aspect-ratio: 2/1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray);
  font-size: 0.85rem;
  border: 1px solid var(--border);
  margin-top: 24px;
}
.quote-form {
  background: var(--bg-light);
  border-radius: 12px;
  padding: 32px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
}
.quote-form h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 20px;
}
.form-row { margin-bottom: 14px; }
.form-row label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--body-text);
  margin-bottom: 5px;
}
.form-row input, .form-row select, .form-row textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font-en);
  font-size: 0.88rem;
  color: var(--body-text);
  background: var(--bg-white);
  transition: border-color 0.2s;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--navy);
}
.form-row textarea { resize: vertical; min-height: 80px; }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-submit {
  width: 100%;
  margin-top: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  background: var(--navy);
  padding: 13px;
  border-radius: 6px;
  transition: all 0.2s;
}
.form-submit:hover {
  background: var(--navy-hover);
  box-shadow: 0 4px 16px rgba(27,36,92,0.25);
}

/* ── Footer ── */
.site-footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 32px 32px;
}
.footer-inner { max-width: var(--max-w); margin: 0 auto; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand .f-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.footer-brand .f-logo img { height: 24px; filter: brightness(10); }
.footer-brand .f-logo span {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: #fff;
}
.footer-brand p {
  font-size: 0.82rem;
  line-height: 1.65;
  margin-bottom: 20px;
  max-width: 300px;
}
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 34px; height: 34px;
  background: rgba(255,255,255,0.08);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  transition: all 0.2s;
}
.footer-social a:hover { background: rgba(255,255,255,0.15); color: #fff; }
.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 10px;
  transition: color 0.2s;
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .industries-grid, .advantages-grid { grid-template-columns: 1fr 1fr; }
  .stats-inner { grid-template-columns: 1fr 1fr; gap: 24px; }
  .materials-grid, .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .quality-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .how-steps { grid-template-columns: 1fr; gap: 24px; }
  .step-arrow { display: none; }
  .tab-panel.active { grid-template-columns: 1fr; }
  .factory-grid { grid-template-columns: 1fr 1fr; }
  .factory-grid .fg-main { grid-row: auto; }
  .trust-bar-inner { flex-wrap: wrap; justify-content: center; }
}
@media (max-width: 600px) {
  .main-nav .nav-link { display: none; }
  .hero h1 { font-size: 2.2rem; }
  .section-title { font-size: 1.6rem; }
  .industries-grid, .advantages-grid, .materials-grid, .gallery-grid { grid-template-columns: 1fr; }
  .inspect-list { grid-template-columns: 1fr; }
}