:root {
  --color-bg: #4a4a4a;
  --color-bg-deep: #363636;
  --color-panel: #555555;
  --color-panel-strong: #626262;
  --color-accent: #ff6b00;
  --color-accent-soft: rgba(255, 107, 0, 0.16);
  --color-secondary: #8a8a8a;
  --color-text: #f5f1eb;
  --color-text-muted: #ded6cc;
  --color-border: rgba(255, 245, 235, 0.18);
  --color-success: #8cc63e;
  --shadow-strong: 0 20px 45px rgba(0, 0, 0, 0.35);
  --shadow-soft: 0 12px 24px rgba(0, 0, 0, 0.18);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --container: 1200px;
  --header-height: 84px;
  --transition: 220ms ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Open Sans", sans-serif;
  color: var(--color-text);
  background:
    linear-gradient(135deg, rgba(255, 107, 0, 0.08), transparent 45%),
    linear-gradient(0deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, #545454 0%, #3c3c3c 100%);
  background-size: auto, 28px 28px, 28px 28px, auto;
  line-height: 1.6;
  min-width: 320px;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

main {
  display: block;
}

.container {
  width: min(calc(100% - 48px), var(--container));
  margin: 0 auto;
}

.section {
  padding: 88px 0;
  position: relative;
}

.section::before {
  content: "";
  position: absolute;
  inset: 20px auto auto 0;
  width: 92px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
}

.section-alt {
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.08), transparent 48%),
    rgba(255, 255, 255, 0.04);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-accent);
}

.eyebrow::before {
  content: "";
  width: 30px;
  height: 2px;
  background: currentColor;
}

.section-heading {
  margin: 0 0 18px;
  font-family: "Oswald", sans-serif;
  font-size: clamp(2.4rem, 4vw, 4rem);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.section-copy {
  max-width: 700px;
  margin: 0 0 40px;
  color: var(--color-text-muted);
  font-size: 1rem;
}

.button,
.button-ghost,
.filter-button,
.load-more,
.nav-phone {
  transition:
    transform var(--transition),
    background-color var(--transition),
    color var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.button,
.button-ghost,
.load-more {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 52px;
  padding: 0 26px;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.button {
  color: #111;
  background: var(--color-accent);
  box-shadow: 0 14px 24px rgba(255, 107, 0, 0.25);
}

.button:hover,
.button:focus-visible,
.button-ghost:hover,
.button-ghost:focus-visible,
.load-more:hover,
.load-more:focus-visible {
  transform: translateY(-2px);
}

.button-ghost {
  border-color: var(--color-border);
  background: transparent;
  color: var(--color-text);
}

.button-ghost:hover,
.button-ghost:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  height: var(--header-height);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(58, 58, 58, 0.9);
  backdrop-filter: blur(10px);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-soft);
  background: rgba(68, 68, 68, 0.96);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 100%;
}

.logo {
  font-family: "Oswald", sans-serif;
  font-size: 1.8rem;
  line-height: 1;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.logo span {
  color: var(--color-accent);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 6px;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

.nav-phone {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 18px;
  border: 2px solid rgba(255, 107, 0, 0.4);
  border-radius: 999px;
  background: rgba(255, 107, 0, 0.08);
  color: var(--color-text);
  font-weight: 700;
}

.nav-phone:hover,
.nav-phone:focus-visible {
  color: #111;
  background: var(--color-accent);
}

.menu-toggle {
  display: none;
  width: 52px;
  height: 52px;
  padding: 0;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.hero {
  position: relative;
  padding: calc(var(--header-height) + 84px) 0 96px;
  min-height: 760px;
  overflow: hidden;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
}

.hero::before {
  background:
    linear-gradient(120deg, rgba(44, 44, 44, 0.78) 16%, rgba(56, 56, 56, 0.56) 58%, rgba(255, 107, 0, 0.14) 100%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.06), transparent 35%),
    radial-gradient(circle at top right, rgba(255, 107, 0, 0.14), transparent 32%),
    url("https://coresg-normal.trae.ai/api/ide/v1/text_to_image?prompt=wide-angle%20photorealistic%20building%20materials%20wholesale%20yard%20with%20large%20stacks%20of%20lumber%2C%20plywood%20bundles%2C%20pallets%20of%20construction%20supplies%2C%20forklift%20loading%20materials%2C%20organized%20industrial%20warehouse%20yard%2C%20commercial%20website%20hero%20image%2C%20no%20people%2C%20high%20detail%2C%20warm%20daylight&image_size=landscape_16_9");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.hero::after {
  background:
    linear-gradient(90deg, transparent 0 82%, rgba(255, 107, 0, 0.18) 82% 83%, transparent 83% 100%),
    linear-gradient(0deg, transparent 0 90%, rgba(255, 255, 255, 0.06) 90% 91%, transparent 91% 100%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 40px;
  align-items: end;
}

.hero-copy {
  max-width: 720px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  margin-bottom: 22px;
  border: 1px solid rgba(255, 107, 0, 0.3);
  background: rgba(255, 107, 0, 0.08);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  color: var(--color-accent);
}

.hero-title {
  margin: 0 0 18px;
  font-family: "Oswald", sans-serif;
  font-size: clamp(3.2rem, 7vw, 6.6rem);
  line-height: 0.96;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.hero-text {
  max-width: 620px;
  margin: 0 0 32px;
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-panel {
  align-self: stretch;
  display: grid;
  gap: 18px;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.05)),
    rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow-strong);
}

.panel-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-accent);
}

.panel-list {
  display: grid;
  gap: 14px;
}

.panel-item {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.panel-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.panel-item strong {
  font-family: "Oswald", sans-serif;
  font-size: 1.45rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.panel-item span {
  color: var(--color-text-muted);
}

.stats-bar {
  position: relative;
  z-index: 1;
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.stat-card,
.counter-card {
  position: relative;
  padding: 26px;
  border: 1px solid var(--color-border);
  border-left: 6px solid var(--color-accent);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent),
    rgba(255, 255, 255, 0.05);
  overflow: hidden;
}

.stat-card::after,
.counter-card::after,
.product-card::after,
.feature-card::after,
.info-card::after,
.form-wrap::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
}

.stat-value,
.counter-value {
  display: block;
  margin-bottom: 8px;
  font-family: "Oswald", sans-serif;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  line-height: 1;
  color: var(--color-text);
}

.stat-label,
.counter-label {
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.88rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.feature-card,
.product-card,
.info-card,
.form-wrap,
.story-block,
.cert-card {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03)),
    rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-soft);
}

.feature-card {
  padding: 30px;
  transition: transform var(--transition), border-color var(--transition);
}

.feature-card:hover,
.feature-card:focus-within,
.product-card:hover,
.product-card:focus-within,
.story-block:hover,
.cert-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 107, 0, 0.35);
}

.icon-placeholder {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  border: 2px solid rgba(255, 107, 0, 0.4);
  border-radius: 14px;
  background: rgba(255, 107, 0, 0.08);
  font-family: "Oswald", sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.card-title {
  margin: 0 0 12px;
  font-family: "Oswald", sans-serif;
  font-size: 1.6rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.card-copy {
  margin: 0;
  color: var(--color-text-muted);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.category-card {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.category-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 360ms ease;
}

.category-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 15%, rgba(17, 17, 17, 0.92) 100%),
    linear-gradient(90deg, rgba(255, 107, 0, 0.1), transparent 30%);
}

.category-card:hover img,
.category-card:focus-within img {
  transform: scale(1.08);
}

.category-overlay {
  position: absolute;
  inset: auto 0 0;
  z-index: 1;
  padding: 26px;
  display: grid;
  gap: 12px;
}

.category-overlay h3,
.product-name,
.value-title,
.footer-title,
.contact-card-title {
  margin: 0;
  font-family: "Oswald", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.category-overlay p,
.footer-copy,
.contact-list,
.meta-text,
.story-copy,
.value-copy,
.cert-copy,
.notice-text {
  margin: 0;
  color: var(--color-text-muted);
}

.category-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.cta-band {
  padding: 32px;
  border: 1px solid rgba(255, 107, 0, 0.25);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(120deg, rgba(255, 107, 0, 0.2), transparent 56%),
    rgba(255, 255, 255, 0.05);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cta-title {
  margin: 0 0 10px;
  font-family: "Oswald", sans-serif;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1;
  text-transform: uppercase;
}

.page-banner {
  padding: calc(var(--header-height) + 68px) 0 72px;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.08), transparent 35%),
    linear-gradient(180deg, rgba(74, 74, 74, 0.95), rgba(60, 60, 60, 0.93));
}

.page-banner .section-heading {
  margin-bottom: 12px;
}

.page-shell {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.filter-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.09), transparent),
    rgba(255, 255, 255, 0.05);
}

.sidebar-title {
  margin: 0 0 18px;
  font-family: "Oswald", sans-serif;
  font-size: 1.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.filter-list {
  display: grid;
  gap: 12px;
}

.filter-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 50px;
  padding: 0 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.filter-button:hover,
.filter-button:focus-visible,
.filter-button.is-active {
  border-color: rgba(255, 107, 0, 0.45);
  background: rgba(255, 107, 0, 0.12);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.product-card {
  overflow: hidden;
}

.product-card[hidden] {
  display: none;
}

.product-card img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.product-content {
  display: grid;
  gap: 14px;
  padding: 22px;
}

.product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.product-sku {
  color: var(--color-accent);
  font-weight: 700;
}

.product-name {
  font-size: 1.45rem;
  line-height: 1.05;
}

.product-spec {
  margin: 0;
  color: var(--color-text-muted);
  min-height: 72px;
}

.product-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.product-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 28px;
}

.summary-text {
  color: var(--color-text-muted);
}

.load-more-wrap {
  margin-top: 28px;
  text-align: center;
}

.load-more[hidden] {
  display: none;
}

.story-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  align-items: stretch;
}

.story-block {
  overflow: hidden;
}

.story-content {
  padding: 30px;
}

.story-content .section-heading {
  font-size: clamp(2rem, 3.5vw, 3.2rem);
}

.story-content p {
  margin: 0 0 18px;
  color: var(--color-text-muted);
}

.story-image {
  height: 100%;
  min-height: 100%;
}

.story-image img {
  width: 100%;
  height: 100%;
  min-height: 340px;
  object-fit: cover;
}

.values-list {
  display: grid;
  gap: 18px;
}

.value-item {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
}

.value-number {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  border: 2px solid rgba(255, 107, 0, 0.36);
  border-radius: 50%;
  color: var(--color-accent);
  font-family: "Oswald", sans-serif;
  font-size: 1.4rem;
}

.value-title {
  font-size: 1.45rem;
}

.counter-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.counter-card {
  padding: 28px 24px;
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.cert-card {
  padding: 28px;
}

.cert-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 88px;
  min-height: 42px;
  margin-bottom: 20px;
  padding: 0 14px;
  border: 1px solid rgba(255, 107, 0, 0.35);
  border-radius: 999px;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
}

.contact-grid {
  align-items: start;
}

.form-wrap,
.info-card {
  padding: 30px;
}

.contact-form {
  display: grid;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.field {
  display: grid;
  gap: 8px;
}

.field label {
  font-size: 0.92rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
}

.field textarea {
  min-height: 160px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid rgba(255, 107, 0, 0.22);
  border-color: rgba(255, 107, 0, 0.45);
}

.field-error {
  min-height: 18px;
  font-size: 0.82rem;
  color: #ffb27d;
}

.field input.invalid,
.field select.invalid,
.field textarea.invalid {
  border-color: #ffb27d;
}

.form-status {
  min-height: 24px;
  font-weight: 700;
  color: var(--color-success);
}

.info-card {
  display: grid;
  gap: 22px;
}

.contact-card-title {
  font-size: 1.7rem;
}

.contact-list {
  display: grid;
  gap: 14px;
  padding: 0;
  list-style: none;
}

.contact-item strong {
  display: block;
  margin-bottom: 6px;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.88rem;
}

.contact-link {
  color: var(--color-accent);
}

.map-frame {
  width: 100%;
  min-height: 320px;
  border: 0;
  border-radius: var(--radius-md);
  filter: grayscale(1) contrast(1.1);
}

.site-footer {
  padding-top: 70px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent 50%),
    #3a3a3a;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 28px;
  padding-bottom: 34px;
}

.footer-title {
  margin-bottom: 16px;
  font-size: 1.3rem;
}

.footer-links {
  display: grid;
  gap: 12px;
}

.footer-links a:hover,
.footer-links a:focus-visible,
.contact-link:hover,
.contact-link:focus-visible {
  color: var(--color-accent);
}

.footer-bottom {
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.notice-box {
  padding: 18px 22px;
  border: 1px solid rgba(255, 107, 0, 0.28);
  border-radius: var(--radius-sm);
  background: rgba(255, 107, 0, 0.08);
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -44px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: #111;
  z-index: 2000;
}

.skip-link:focus {
  top: 16px;
}

:focus-visible {
  outline: 2px solid rgba(255, 107, 0, 0.4);
  outline-offset: 3px;
}

@media (max-width: 1024px) {
  .container {
    width: min(calc(100% - 40px), var(--container));
  }

  .header-nav {
    gap: 20px;
  }

  .nav-list {
    gap: 20px;
  }

  .hero-inner,
  .page-shell,
  .story-grid,
  .contact-grid,
  .footer-grid,
  .cta-inner {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    max-width: 420px;
  }

  .category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .counter-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cert-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .filter-sidebar {
    position: static;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 76px;
  }

  .section {
    padding: 72px 0;
  }

  .site-header {
    overflow: visible;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .header-nav {
    position: absolute;
    left: 20px;
    right: 20px;
    top: calc(100% + 10px);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
    padding: 22px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: rgba(72, 72, 72, 0.98);
    box-shadow: var(--shadow-soft);
  }

  .header-nav.is-open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .nav-link {
    min-height: 48px;
  }

  .nav-phone {
    justify-content: center;
  }

  .hero {
    padding-bottom: 72px;
    min-height: auto;
  }

  .stats-bar,
  .feature-grid,
  .category-grid,
  .product-grid,
  .counter-grid,
  .cert-grid,
  .form-row {
    grid-template-columns: 1fr;
  }

  .product-summary {
    flex-direction: column;
    align-items: start;
  }

  .value-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .hero-title {
    font-size: 2.8rem;
  }

  .button,
  .button-ghost,
  .load-more,
  .nav-phone {
    width: 100%;
  }

  .hero-actions,
  .product-actions {
    flex-direction: column;
  }

  .feature-card,
  .form-wrap,
  .info-card,
  .story-content,
  .cert-card,
  .filter-sidebar,
  .cta-band {
    padding: 22px;
  }
}

@media print {
  :root {
    --color-bg: #ffffff;
    --color-text: #111111;
    --color-text-muted: #444444;
    --color-border: rgba(0, 0, 0, 0.14);
  }

  body {
    color: #111;
    background: #fff;
  }

  .site-header,
  .menu-toggle,
  .hero-actions,
  .load-more-wrap,
  .button,
  .button-ghost,
  .category-link,
  .map-frame,
  .site-footer {
    display: none !important;
  }

  .hero,
  .page-banner {
    padding: 24px 0;
    background: #fff;
  }

  .hero::before,
  .hero::after,
  .section::before,
  .stat-card::after,
  .counter-card::after,
  .product-card::after,
  .feature-card::after,
  .info-card::after,
  .form-wrap::after {
    display: none;
  }

  .section,
  .page-banner,
  main {
    padding: 18px 0 !important;
  }

  .hero-title,
  .section-heading,
  .card-title,
  .product-name,
  .contact-card-title {
    color: #111;
  }

  .feature-card,
  .product-card,
  .info-card,
  .form-wrap,
  .story-block,
  .cert-card,
  .stat-card,
  .counter-card,
  .value-item {
    box-shadow: none;
    background: #fff;
    color: #111;
    break-inside: avoid;
  }

  a {
    color: #111;
    text-decoration: none;
  }
}