/* =========================================================
   Checkseals — Home Page Styles
   Color theme derived from logo: near-black + red/orange accent
   ========================================================= */

:root {
  --color-ink: #1a1a1a;
  --color-ink-soft: #3a3a3a;
  --color-accent: #e8382b;
  --color-accent-dark: #c62222;
  --color-accent-light: #ff6a4d;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f6f5;
  --color-border: #eae7e5;
  --color-muted: #6b6b6b;

  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;

  --container-width: 1200px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 4px 14px rgba(26, 26, 26, 0.06);
  --shadow-md: 0 12px 32px rgba(26, 26, 26, 0.1);
  --shadow-accent: 0 14px 30px rgba(232, 56, 43, 0.28);
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset ---------- */
* , *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-heading); margin: 0 0 0.5em; line-height: 1.2; }
p { margin: 0 0 1em; }
button { font-family: inherit; cursor: pointer; }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.text-accent { color: var(--color-accent); }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-accent);
  color: #fff;
  padding: 12px 20px;
  z-index: 999;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 32px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: #fff;
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 34px rgba(232, 56, 43, 0.36); }
.btn-outline {
  border-color: var(--color-ink);
  color: var(--color-ink);
  background: transparent;
}
.btn-outline:hover { background: var(--color-ink); color: #fff; transform: translateY(-3px); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--transition), border-color var(--transition), background var(--transition);
}
.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 6px;
  padding-bottom: 6px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 14px;
}
.logo img { height: 72px; width: auto; }

.main-nav .nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  position: relative;
  padding: 10px 18px;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--color-ink-soft);
  border-radius: 999px;
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: var(--color-accent); background: var(--color-bg-alt); }
.nav-link.active { color: var(--color-accent); }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 18px; right: 18px; bottom: 5px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: transparent;
  border: none;
  border-radius: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 0 auto;
  background: var(--color-ink);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 128px 0 90px;
  background:
    radial-gradient(700px 400px at 85% -10%, rgba(232, 56, 43, 0.08), transparent 60%),
    var(--color-bg-alt);
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 48px;
}
.eyebrow {
  display: inline-block;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.82rem;
  color: var(--color-accent);
  background: rgba(232, 56, 43, 0.09);
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  font-weight: 800;
  color: var(--color-ink);
  margin-bottom: 22px;
}
.hero-text {
  font-size: 1.06rem;
  color: var(--color-muted);
  max-width: 560px;
  margin-bottom: 34px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-blob {
  position: absolute;
  width: 68%;
  height: 68%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  border-radius: 42% 58% 65% 35% / 45% 40% 60% 55%;
  opacity: 0.14;
  filter: blur(6px);
  animation: blobMove 9s ease-in-out infinite;
  z-index: 0;
}
.hero-img {
  position: relative;
  z-index: 1;
  max-width: 440px;
  width: 100%;
  filter: drop-shadow(0 18px 26px rgba(26, 26, 26, 0.22));
  animation: floatY 5s ease-in-out infinite;
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}
@keyframes blobMove {
  0%, 100% { border-radius: 42% 58% 65% 35% / 45% 40% 60% 55%; transform: rotate(0deg); }
  50% { border-radius: 58% 42% 40% 60% / 55% 65% 35% 45%; transform: rotate(8deg); }
}

.hero-wave {
  position: absolute;
  bottom: -2px; left: 0;
  width: 100%;
  height: 70px;
}
.hero-wave path { fill: var(--color-bg); }

/* ---------- Section heading ---------- */
.section-heading {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-heading h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
}
.section-sub { color: var(--color-muted); font-size: 1.02rem; }

section { padding: 100px 0; }

/* ---------- Industries ---------- */
.industries { background: var(--color-bg); padding-top: 70px; }
.industry-tile-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
}
.industry-tile {
  position: relative;
  aspect-ratio: 9 / 8;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-ink), var(--color-ink-soft));
}
.industry-tile-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.6s ease;
}
.industry-tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20, 18, 17, 0.15) 0%, rgba(20, 18, 17, 0.6) 100%);
  transition: background var(--transition);
}
.industry-tile:hover .industry-tile-bg { transform: scale(1.08); }
.industry-tile:hover::after {
  background: linear-gradient(180deg, rgba(232, 56, 43, 0.28) 0%, rgba(20, 18, 17, 0.62) 100%);
}
.industry-tile-label {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
}
.industry-tile-label h3 {
  margin: 0;
  color: #fff;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 1.05rem;
  line-height: 1.35;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.45);
}

/* ---------- Products ---------- */
.products { background: var(--color-bg); }
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.product-card {
  display: block;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.product-media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-bg-alt);
}
.product-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.product-card:hover .product-media img { transform: scale(1.08); }
.product-body { padding: 26px 24px 30px; }
.product-body h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; }
.product-body p { color: var(--color-muted); font-size: 0.96rem; margin-bottom: 18px; }
.product-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--color-accent);
  font-size: 0.94rem;
  transition: gap var(--transition);
}
.product-card:hover .product-link { gap: 12px; }

/* ---------- About ---------- */
.about { background: var(--color-bg-alt); }
.about-inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: center;
}
.about-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.about-content h1, .about-content h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); font-weight: 800; }
.about-content p { color: var(--color-muted); }
.about-list { margin-top: 22px; display: flex; flex-direction: column; gap: 12px; }
.about-list li {
  position: relative;
  padding-left: 30px;
  font-weight: 600;
  color: var(--color-ink);
}
.about-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 4px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
}
.about-list li::after {
  content: "";
  position: absolute;
  left: 6px; top: 8px;
  width: 6px; height: 10px;
  border-right: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(45deg);
}

#why-us { padding-top: 148px; }

/* ---------- Detail list (About page) ---------- */
.detail-list {
  margin: 22px 0 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.detail-row dt {
  font-weight: 700;
  color: var(--color-ink);
  font-size: 0.96rem;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}
.detail-row dt::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}
.detail-row dd {
  margin: 0 0 0 16px;
  color: var(--color-muted);
  font-size: 0.98rem;
}
.cert-heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 4px;
}
.cert-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 20px;
  margin-top: 14px;
}
.cert-list li { font-size: 0.94rem; }

/* ---------- Scope section ---------- */
.scope { background: var(--color-bg-alt); }
.scope-content {
  max-width: 820px;
  margin: 0 auto;
}
.scope-content p { color: var(--color-muted); font-size: 1.02rem; }

/* ---------- About CTA ---------- */
.about-cta {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: #fff;
  text-align: center;
}
.about-cta-inner h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2.1rem); }
.about-cta-inner p { color: rgba(255, 255, 255, 0.88); max-width: 520px; margin: 0 auto 28px; }
.about-cta .btn-primary {
  background: #fff;
  color: var(--color-accent-dark);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.18);
}
.about-cta .btn-primary:hover { background: var(--color-ink); color: #fff; }

/* ---------- Contact Page ---------- */
.contact-page { padding-top: 148px; background: var(--color-bg); }
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 32px;
  align-items: start;
}
.contact-info-card,
.contact-form-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.contact-info-card h2,
.contact-form-card h2 {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 24px;
}
.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin-bottom: 28px;
}
.contact-info-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.contact-info-list h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-ink);
  margin: 0 0 4px;
}
.contact-info-list p { color: var(--color-muted); margin: 0; font-size: 0.96rem; }
.contact-info-list a { color: var(--color-muted); transition: color var(--transition); }
.contact-info-list a:hover { color: var(--color-accent); }

.contact-map {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.contact-map iframe {
  width: 100%;
  height: 260px;
  border: 0;
  display: block;
}

.contact-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 0.96rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(232, 56, 43, 0.12);
}
.contact-form .btn { width: 100%; }
.form-note {
  margin: 14px 0 0;
  font-size: 0.9rem;
  color: var(--color-muted);
  text-align: center;
  min-height: 1.3em;
}
.form-note.success { color: #1a8a4a; font-weight: 600; }
.form-note.error { color: var(--color-accent-dark); font-weight: 600; }

.form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ---------- Product Detail Page ---------- */
.product-intro { padding: 148px 0 20px; background: var(--color-bg); }
.product-intro .section-heading { margin-bottom: 0; }
.product-intro + .product-detail { padding-top: 40px; }

.product-detail { background: var(--color-bg); }
.product-detail.alt { background: var(--color-bg-alt); }
.product-detail-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.product-detail-media {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.product-detail-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.product-detail-content h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 800;
  margin-bottom: 16px;
}
.product-detail-content p { color: var(--color-muted); }

/* ---------- FAQ ---------- */
.faq { background: var(--color-bg); }
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.faq-item {
  position: relative;
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  z-index: 1;
  transition: box-shadow var(--transition), transform var(--transition), z-index 0s;
}
.faq-item:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); z-index: 30; }
.faq-image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: visible;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.faq-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  position: relative;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  cursor: zoom-in;
  transition: transform 0.5s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.5s ease, border-radius 0.5s ease;
}
.faq-item:hover .faq-image img {
  transform: scale(1.35);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 40px rgba(26, 26, 26, 0.3);
}
.faq-text { padding: 26px 28px 30px; }
.faq-question {
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--color-ink);
}
.faq-answer p { color: var(--color-muted); font-size: 0.96rem; }
.faq-answer ul { margin-top: 8px; display: flex; flex-direction: column; gap: 10px; }
.faq-answer li {
  color: var(--color-muted);
  font-size: 0.96rem;
  padding-left: 20px;
  position: relative;
}
.faq-answer li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* ---------- Footer ---------- */
.site-footer {
  background: #eeece9;
  color: var(--color-ink-soft);
  font-style: normal;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1.1fr;
  gap: 40px;
  padding-top: 72px;
  padding-bottom: 48px;
}
.footer-col h3 {
  color: var(--color-ink);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 20px;
}
.footer-company-name {
  font-weight: 700;
  color: var(--color-ink);
  font-size: 0.95rem;
  margin: 0 0 20px;
}
.footer-logo-link { display: inline-block; }
.footer-logo { height: 52px; width: auto; margin-bottom: 18px; }
.footer-brand p { color: var(--color-muted); max-width: 340px; font-style: normal; }

.footer-links ul { display: flex; flex-direction: column; gap: 12px; }
.footer-links a {
  color: var(--color-ink-soft);
  font-weight: 500;
  transition: color var(--transition), padding-left var(--transition);
}
.footer-links a:hover { color: var(--color-accent); padding-left: 4px; }

.footer-contact-list { display: flex; flex-direction: column; gap: 18px; }
.footer-contact-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.footer-contact-list span:not(.footer-icon),
.footer-contact-list a { color: var(--color-ink-soft); font-style: normal; }
.footer-contact-list a { transition: color var(--transition); }
.footer-contact-list a:hover { color: var(--color-accent); }

.footer-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(232, 56, 43, 0.1);
  color: var(--color-accent);
}
.footer-icon svg { width: 18px; height: 18px; }

.footer-bottom {
  border-top: 1px solid rgba(26, 26, 26, 0.08);
  background: rgba(26, 26, 26, 0.03);
  padding: 18px 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom p { margin: 0; font-size: 0.86rem; color: var(--color-muted); font-style: normal; }
.footer-credit a {
  color: var(--color-muted);
  font-weight: 600;
  transition: color var(--transition);
}
.footer-credit a:hover { color: var(--color-accent); }

@media (max-width: 480px) {
  .footer-bottom-inner { justify-content: center; text-align: center; }
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: #fff;
  font-size: 1.2rem;
  box-shadow: var(--shadow-accent);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 400;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-4px); }

/* ---------- Scroll animation ---------- */
[data-animate] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
[data-animate="fade-in"] { transform: translateY(0) scale(0.96); }
[data-animate].in-view {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ---------- Responsive ---------- */
@media (max-width: 991px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-text { margin-left: auto; margin-right: auto; }
  .hero-cta { justify-content: center; }
  .hero-media { margin-top: 32px; }
  .about-inner { grid-template-columns: 1fr; }
  .about-media { order: -1; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; }
  .industry-tile-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .product-detail-inner { grid-template-columns: 1fr; gap: 28px; }
  .product-detail-media { order: -1; }
}

@media (max-width: 768px) {
  section { padding: 72px 0; }
  .hero { padding: 140px 0 90px; }

  .nav-toggle { display: flex; position: relative; z-index: 460; }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    box-shadow: 0 18px 32px rgba(26, 26, 26, 0.14);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    z-index: 440;
  }
  .main-nav.open { max-height: 320px; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 2px; padding: 12px 24px 22px; }
  .nav-link { display: block; width: 100%; padding: 14px 18px; }

  .product-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .industry-tile-label h3 { font-size: 0.92rem; }
  .contact-form .form-row { grid-template-columns: 1fr; }
  .contact-info-card, .contact-form-card { padding: 28px 24px; }
  .product-intro { padding: 120px 0 16px; }
  .product-intro + .product-detail { padding-top: 24px; }
}

@media (max-width: 480px) {
  .header-inner { padding-top: 4px; padding-bottom: 4px; }
  .logo img { height: 56px; }
  .hero h1 { font-size: 1.8rem; }
  .btn { padding: 13px 24px; font-size: 0.9rem; }
  .back-to-top { right: 16px; bottom: 16px; width: 44px; height: 44px; }
  .cert-list { grid-template-columns: 1fr; }
  .industry-tile-grid { grid-template-columns: 1fr; }
  .industry-tile { aspect-ratio: 16 / 10; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}