:root {
  --ink: #152129;
  --ink-soft: #44515a;
  --paper: #ffffff;
  --mist: #eef3f5;
  --mist-strong: #dbe5e9;
  --blue: #0879b5;
  --blue-dark: #075887;
  --cyan: #2ca7c9;
  --yellow: #f2c230;
  --red: #d84c3f;
  --charcoal: #172027;
  --line: #ced9de;
  --max-width: 1200px;
  --header-height: 74px;
  --shadow: 0 18px 45px rgba(22, 35, 43, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 18px);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(242, 194, 48, 0.9);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 10px 14px;
  color: var(--ink);
  background: var(--yellow);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-height);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(206, 217, 222, 0.9);
  backdrop-filter: blur(14px);
}

.header-inner {
  width: min(calc(100% - 40px), var(--max-width));
  height: var(--header-height);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: 220px;
}

.brand img {
  width: 104px;
  height: 60px;
  object-fit: cover;
  object-position: left center;
}

.brand-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--blue-dark);
  white-space: nowrap;
}

.desktop-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  font-size: 14px;
  font-weight: 650;
}

.desktop-nav a {
  position: relative;
  padding: 26px 0 22px;
}

.desktop-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 17px;
  height: 3px;
  background: var(--yellow);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.desktop-nav a:hover::after,
.desktop-nav a:focus-visible::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.language-switch {
  display: grid;
  grid-template-columns: repeat(2, 42px);
  height: 34px;
  padding: 3px;
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.lang-button {
  min-width: 0;
  padding: 0;
  color: var(--ink-soft);
  background: transparent;
  border: 0;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 800;
}

.lang-button.is-active {
  color: var(--paper);
  background: var(--blue-dark);
}

.icon-button {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  padding: 0;
  color: var(--blue-dark);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
}

.icon-button:hover {
  color: var(--paper);
  background: var(--blue-dark);
  border-color: var(--blue-dark);
}

.icon-button svg {
  width: 18px;
  height: 18px;
}

.mobile-menu-button,
.mobile-nav {
  display: none;
}

.hero {
  position: relative;
  height: calc(100svh - 150px);
  min-height: 620px;
  max-height: 790px;
  overflow: hidden;
  color: var(--paper);
  isolation: isolate;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -3;
  background: var(--charcoal);
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1;
  filter: saturate(0.84) contrast(1.02);
  object-position: 58% 50%;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: -2;
  background: linear-gradient(90deg, rgba(9, 23, 31, 0.82) 0%, rgba(9, 23, 31, 0.66) 42%, rgba(9, 23, 31, 0.22) 72%, rgba(9, 23, 31, 0.08) 100%);
}

.hero-inner {
  width: min(calc(100% - 40px), var(--max-width));
  height: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 54px 0 46px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 850;
  text-transform: uppercase;
}

.hero .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--yellow);
}

.hero .eyebrow::before {
  content: "";
  width: 42px;
  height: 3px;
  background: var(--yellow);
}

.hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: 64px;
  line-height: 1.12;
  font-weight: 800;
}

.hero-lead {
  max-width: 690px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 19px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 800;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button svg {
  width: 18px;
  height: 18px;
}

.button-primary {
  color: var(--ink);
  background: var(--yellow);
  border-color: var(--yellow);
}

.button-primary:hover {
  background: #ffd34a;
  border-color: #ffd34a;
}

.button-secondary {
  color: var(--paper);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.44);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: var(--paper);
}

.hero-facts {
  display: flex;
  gap: 0;
  margin: 40px 0 0;
}

.hero-facts div {
  min-width: 175px;
  padding: 0 28px;
  border-left: 1px solid rgba(255, 255, 255, 0.28);
}

.hero-facts div:first-child {
  padding-left: 0;
  border-left: 0;
}

.hero-facts dt {
  color: var(--paper);
  font-size: 24px;
  font-weight: 850;
}

.hero-facts dd {
  margin: 2px 0 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 13px;
}

.hero-next {
  position: absolute;
  right: 30px;
  bottom: 26px;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--paper);
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: 50%;
}

.hero-next svg {
  width: 20px;
  height: 20px;
}

.section,
.capabilities-band,
.about-band {
  padding: 104px 0;
}

.section-inner,
.footer-brands-inner,
.footer-inner {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
}

.products-section {
  padding-top: 34px;
}

.section-heading {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: end;
  gap: 56px;
  margin-bottom: 46px;
}

.section-heading h2,
.capabilities-heading h2,
.about-copy h2,
.contact-copy h2 {
  margin: 0;
  max-width: 760px;
  font-size: 40px;
  line-height: 1.25;
  font-weight: 800;
}

.section-heading > p,
.contact-copy > p,
.about-copy > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.category-card {
  min-height: 250px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.category-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: var(--shadow);
}

.category-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: var(--paper);
  background: var(--blue-dark);
  border-radius: 5px;
}

.category-icon svg {
  width: 23px;
  height: 23px;
}

.category-card:nth-child(3n + 2) .category-icon {
  background: var(--red);
}

.category-card:nth-child(3n + 3) .category-icon {
  color: var(--ink);
  background: var(--yellow);
}

.category-card h3 {
  margin: 22px 0 10px;
  font-size: 20px;
  line-height: 1.35;
}

.category-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
}

.category-card > span {
  margin-top: auto;
  padding-top: 20px;
  color: var(--blue-dark);
  font-size: 12px;
  font-weight: 800;
}

.common-parts-section {
  background: var(--mist);
}

.common-parts-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.common-part-card {
  min-width: 0;
  min-height: 392px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.common-part-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: var(--shadow);
}

.company-video-section {
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.company-video-frame {
  overflow: hidden;
  background: var(--charcoal);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.company-video-frame video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--charcoal);
}

.common-part-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #e5f6fb;
  border-bottom: 1px solid var(--line);
}

.common-part-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.common-part-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 19px;
}

.common-part-body > span {
  margin-bottom: 8px;
  color: var(--blue-dark);
  font-size: 11px;
  font-weight: 800;
}

.common-part-body code {
  color: var(--red);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.common-part-body h3 {
  margin: 10px 0 20px;
  font-size: 17px;
  line-height: 1.45;
}

.common-part-body a {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.common-part-body a:hover {
  color: var(--blue-dark);
}

.common-part-body a svg {
  width: 16px;
  height: 16px;
}

.ventilation-hoses-section {
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.ventilation-specs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 20px;
  color: var(--paper);
  background: var(--charcoal);
  border-top: 4px solid var(--yellow);
}

.ventilation-specs div {
  min-width: 0;
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 16px 18px;
  border-left: 1px solid rgba(255, 255, 255, 0.18);
}

.ventilation-specs div:first-child {
  border-left: 0;
}

.ventilation-specs svg {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  color: var(--yellow);
}

.ventilation-specs span {
  font-size: 12px;
  line-height: 1.5;
  font-weight: 750;
}

.ventilation-hose-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.ventilation-hose-card {
  min-width: 0;
  min-height: 438px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #f8faf9;
  border: 1px solid var(--line);
  border-radius: 6px;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.ventilation-hose-card:hover {
  transform: translateY(-4px);
  border-color: var(--yellow-dark);
  box-shadow: var(--shadow);
}

.ventilation-hose-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #eef1ee;
  border-bottom: 1px solid var(--line);
}

.ventilation-hose-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ventilation-hose-image.is-cutout {
  padding: 14px;
  background: var(--paper);
}

.ventilation-hose-image.is-cutout img {
  object-fit: contain;
}

.ventilation-hose-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 19px;
}

.ventilation-hose-body > span {
  color: #9b6500;
  font-size: 11px;
  font-weight: 900;
}

.ventilation-hose-body h3 {
  margin: 8px 0 10px;
  font-size: 17px;
  line-height: 1.42;
}

.ventilation-hose-body p {
  margin: 0;
}

.ventilation-hose-body .hose-spec {
  color: var(--red);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 11px;
  line-height: 1.55;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.ventilation-hose-body .hose-desc {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.65;
}

.ventilation-hose-body a {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  padding-top: 14px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.ventilation-hose-body a:hover {
  color: var(--blue-dark);
}

.ventilation-hose-body a svg {
  width: 16px;
  height: 16px;
}

.capabilities-band {
  color: var(--paper);
  background: var(--charcoal);
}

.capabilities-band .section-kicker {
  color: var(--yellow);
}

.capabilities-heading {
  max-width: 680px;
  margin-bottom: 48px;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: 0;
  margin: 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.process-list li {
  position: relative;
  min-height: 290px;
  padding: 32px 28px 20px;
  border-left: 1px solid rgba(255, 255, 255, 0.22);
}

.process-list li:first-child {
  border-left: 0;
}

.process-list svg {
  width: 30px;
  height: 30px;
  margin-top: 46px;
  color: var(--yellow);
}

.process-number {
  position: absolute;
  top: 26px;
  right: 24px;
  color: rgba(255, 255, 255, 0.34);
  font-weight: 850;
}

.process-list h3 {
  margin: 22px 0 10px;
  font-size: 21px;
}

.process-list p {
  margin: 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 14px;
  line-height: 1.8;
}

.about-band {
  background: var(--paper);
}

.about-layout {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  align-items: stretch;
  gap: 72px;
}

.about-year {
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 38px;
  color: var(--paper);
  background: var(--blue-dark);
  border-bottom: 10px solid var(--yellow);
}

.about-year span {
  font-size: 96px;
  line-height: 1;
  font-weight: 850;
}

.about-year small {
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.about-copy {
  align-self: center;
}

.about-copy h2 {
  margin-bottom: 26px;
}

.about-copy > p + p {
  margin-top: 14px;
}

.about-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
}

.about-points span {
  min-height: 105px;
  padding: 17px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--mist);
  border-bottom: 3px solid var(--cyan);
}

.about-points svg {
  width: 22px;
  height: 22px;
  color: var(--blue-dark);
}

.about-points b {
  font-size: 13px;
}

.contact-section {
  background: var(--mist);
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  align-items: start;
  gap: 80px;
}

.contact-copy h2 {
  margin-bottom: 20px;
}

.contact-list {
  display: grid;
  gap: 0;
  margin-top: 42px;
  font-style: normal;
  border-top: 1px solid var(--line);
}

.contact-list > a,
.contact-list > div {
  min-height: 82px;
  display: grid;
  grid-template-columns: 32px 1fr;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.contact-list > a:hover b {
  color: var(--blue-dark);
}

.contact-list svg {
  width: 22px;
  height: 22px;
  color: var(--blue-dark);
}

.contact-list span {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.contact-list small {
  color: var(--ink-soft);
  font-size: 11px;
}

.contact-list b {
  overflow-wrap: anywhere;
  font-size: 15px;
  font-weight: 750;
}

.inquiry-form {
  padding: 34px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.form-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 26px;
}

.form-heading h3 {
  margin: 0;
  font-size: 24px;
}

.form-heading svg {
  width: 24px;
  height: 24px;
  color: var(--blue-dark);
}

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

.form-grid label {
  display: grid;
  gap: 7px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 750;
}

.form-full {
  grid-column: 1 / -1;
}

.form-grid input,
.form-grid textarea {
  width: 100%;
  color: var(--ink);
  background: #fbfcfc;
  border: 1px solid var(--line);
  border-radius: 4px;
}

.form-grid input {
  height: 48px;
  padding: 0 13px;
}

.form-grid textarea {
  min-height: 112px;
  padding: 12px 13px;
  resize: vertical;
}

.form-grid input:focus,
.form-grid textarea:focus {
  border-color: var(--blue);
}

.form-submit {
  width: 100%;
  margin-top: 22px;
}

.form-status {
  min-height: 24px;
  margin: 10px 0 0;
  color: var(--blue-dark);
  font-size: 12px;
}

.site-footer {
  color: var(--paper);
  background: #11181d;
}

.footer-brands {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brands-inner {
  padding: 22px 0 20px;
}

.footer-brands-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  margin: 0;
}

.footer-brands-line span {
  color: rgba(255, 255, 255, 0.48);
  font-size: 10px;
  font-weight: 750;
}

.footer-brands-line strong {
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
  line-height: 1.6;
  font-weight: 650;
}

.footer-brands-note {
  max-width: 980px;
  margin: 5px 0 0;
  color: rgba(255, 255, 255, 0.38);
  font-size: 10px;
  line-height: 1.65;
}

.footer-inner {
  min-height: 154px;
  display: grid;
  grid-template-columns: 120px 1fr auto;
  align-items: center;
  gap: 30px;
}

.footer-brand img {
  width: 104px;
  height: 68px;
  object-fit: contain;
  background: var(--paper);
  border-radius: 4px;
}

.footer-inner p {
  margin: 0;
  font-size: 14px;
  font-weight: 750;
}

.footer-inner small {
  display: block;
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.56);
  font-size: 11px;
  font-weight: 500;
}

.footer-meta {
  color: rgba(255, 255, 255, 0.5);
  font-size: 11px !important;
}

.mobile-contact-bar {
  display: none;
}

@media (max-width: 1080px) {
  .desktop-nav {
    gap: 18px;
  }

  .brand-name {
    display: none;
  }

  .brand {
    min-width: 110px;
  }

  .hero h1 {
    font-size: 52px;
  }

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

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

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

  .ventilation-specs div:nth-child(3) {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
  }

  .ventilation-specs div:nth-child(4) {
    border-top: 1px solid rgba(255, 255, 255, 0.18);
  }

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

  .process-list li:nth-child(3) {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.22);
  }

  .process-list li:nth-child(4) {
    border-top: 1px solid rgba(255, 255, 255, 0.22);
  }

  .about-layout,
  .contact-layout {
    gap: 46px;
  }

  .about-points {
    grid-template-columns: 1fr;
  }

  .about-points span {
    min-height: 76px;
    flex-direction: row;
    align-items: center;
  }
}

@media (max-width: 820px) {
  :root {
    --header-height: 68px;
  }

  .desktop-nav,
  .desktop-mail {
    display: none;
  }

  .mobile-menu-button {
    display: inline-grid;
  }

  .mobile-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    height: calc(100svh - var(--header-height));
    z-index: 90;
    padding: 30px 22px;
    flex-direction: column;
    gap: 0;
    color: var(--paper);
    background: var(--charcoal);
  }

  .mobile-nav:not([hidden]) {
    display: flex;
  }

  .mobile-nav a {
    padding: 18px 4px;
    font-size: 18px;
    font-weight: 750;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  }

  .hero {
    height: calc(100svh - 142px);
    min-height: 540px;
    max-height: 680px;
  }

  .hero-media {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
  }

  .hero-media img:nth-child(1),
  .hero-media img:nth-child(2),
  .hero-media img:nth-child(3),
  .hero-media img:nth-child(4) {
    object-position: center;
  }

  .hero-overlay {
    background: rgba(9, 23, 31, 0.8);
  }

  .hero h1 {
    max-width: 640px;
    font-size: 42px;
  }

  .hero-lead {
    font-size: 17px;
  }

  .section,
  .capabilities-band,
  .about-band {
    padding: 78px 0;
  }

  .section-heading {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 20px;
  }

  .section-heading h2,
  .capabilities-heading h2,
  .about-copy h2,
  .contact-copy h2 {
    font-size: 34px;
  }

  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .about-year {
    min-height: 260px;
  }

  .about-points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .about-points span {
    min-height: 105px;
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-inner {
    grid-template-columns: 92px 1fr;
    padding: 30px 0 92px;
  }

  .footer-meta {
    grid-column: 1 / -1;
  }

  .mobile-contact-bar {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: calc(10px + env(safe-area-inset-bottom));
    z-index: 80;
    height: 60px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    overflow: hidden;
    color: var(--paper);
    background: var(--charcoal);
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 7px;
    box-shadow: 0 12px 34px rgba(0, 0, 0, 0.28);
    opacity: 0;
    pointer-events: none;
    transform: translateY(130%);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .mobile-contact-bar.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .mobile-contact-bar a {
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    font-size: 13px;
    font-weight: 800;
    border-left: 1px solid rgba(255, 255, 255, 0.18);
  }

  .mobile-contact-bar a:first-child {
    border-left: 0;
  }

  .mobile-contact-bar a:last-child {
    color: var(--ink);
    background: var(--yellow);
  }

  .mobile-contact-bar svg {
    width: 18px;
    height: 18px;
  }
}

@media (max-width: 600px) {
  .header-inner,
  .hero-inner,
  .section-inner,
  .footer-brands-inner,
  .footer-inner {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .brand img {
    width: 92px;
    height: 56px;
  }

  .language-switch {
    grid-template-columns: repeat(2, 36px);
  }

  .hero {
    height: calc(100svh - 138px);
    min-height: 510px;
  }

  .hero-inner {
    padding: 28px 0 30px;
  }

  .hero .eyebrow {
    margin-bottom: 12px;
    font-size: 11px;
  }

  .hero h1 {
    font-size: 34px;
    line-height: 1.18;
  }

  .hero-lead {
    margin-top: 15px;
    font-size: 14px;
    line-height: 1.7;
  }

  .hero-actions {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 22px;
  }

  .hero-actions .button {
    min-width: 0;
    padding: 10px 11px;
    font-size: 13px;
  }

  .hero-facts {
    width: 100%;
    margin-top: 24px;
  }

  .hero-facts div {
    min-width: 0;
    flex: 1;
    padding: 0 9px;
  }

  .hero-facts dt {
    font-size: 18px;
  }

  .hero-facts dd {
    font-size: 10px;
    line-height: 1.45;
  }

  .hero-next {
    display: none;
  }

  .section,
  .capabilities-band,
  .about-band {
    padding: 64px 0;
  }

  .section-heading {
    margin-bottom: 32px;
  }

  .section-heading h2,
  .capabilities-heading h2,
  .about-copy h2,
  .contact-copy h2 {
    font-size: 29px;
  }

  .section-heading > p,
  .contact-copy > p,
  .about-copy > p {
    font-size: 14px;
  }

  .category-grid,
  .process-list,
  .common-parts-grid,
  .ventilation-hose-grid,
  .about-points,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .category-card {
    min-height: 230px;
  }

  .process-list li,
  .process-list li:nth-child(3),
  .process-list li:nth-child(4) {
    min-height: 230px;
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.22);
  }

  .process-list li:first-child {
    border-top: 0;
  }

  .about-year {
    min-height: 230px;
  }

  .about-year span {
    font-size: 72px;
  }

  .about-points span {
    min-height: 76px;
    flex-direction: row;
    align-items: center;
  }

  .contact-layout {
    gap: 42px;
  }

  .inquiry-form {
    padding: 24px 18px;
  }

  .form-full {
    grid-column: auto;
  }

  .footer-inner {
    grid-template-columns: 78px 1fr;
  }

  .footer-brand img {
    width: 78px;
    height: 56px;
  }
}

@media (max-width: 380px) {
  .hero h1 {
    font-size: 30px;
  }

  .hero-facts dd {
    display: none;
  }

  .hero-facts div {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Sage-inspired GSE supplier layout */
:root {
  --ink: #1c2c31;
  --ink-soft: #53636a;
  --paper: #ffffff;
  --mist: #f0f3f3;
  --mist-strong: #dbe4e3;
  --blue: #087fa8;
  --blue-dark: #15536b;
  --cyan: #25a8b8;
  --yellow: #efbd31;
  --red: #c95546;
  --charcoal: #102a2d;
  --line: #d7e0df;
  --max-width: 1280px;
  --header-height: 132px;
  --shadow: 0 10px 28px rgba(22, 46, 48, 0.1);
}

html {
  scroll-padding-top: var(--header-height);
}

body {
  color: var(--ink);
  background: #edf1f1;
  font-family: Inter, "Hiragino Sans GB", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

.site-header {
  min-height: var(--header-height);
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 2px 12px rgba(22, 46, 48, 0.06);
  backdrop-filter: none;
}

.top-utility-bar {
  color: rgba(255, 255, 255, 0.78);
  background: #173f3b;
  font-size: 11px;
  letter-spacing: 0.02em;
}

.utility-inner {
  width: min(calc(100% - 40px), var(--max-width));
  min-height: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin: 0 auto;
}

.utility-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.utility-links a:hover,
.utility-links a:focus-visible {
  color: var(--yellow);
}

.header-inner {
  width: min(calc(100% - 40px), var(--max-width));
  height: 74px;
  gap: 28px;
}

.brand {
  min-width: 240px;
  gap: 12px;
}

.brand img {
  width: 128px;
  height: 58px;
  object-fit: contain;
}

.brand-name {
  color: var(--blue-dark);
  font-size: 13px;
  font-weight: 800;
}

.desktop-nav {
  gap: 26px;
  color: #28494a;
  font-size: 13px;
  font-weight: 750;
}

.desktop-nav a {
  padding: 27px 0 22px;
}

.desktop-nav a::after {
  bottom: 16px;
  height: 2px;
  background: var(--cyan);
}

.header-actions {
  gap: 8px;
}

.language-switch {
  grid-template-columns: repeat(2, 35px);
  height: 30px;
  padding: 2px;
  border: 1px solid var(--line);
}

.lang-button {
  color: var(--ink-soft);
  font-size: 11px;
}

.lang-button.is-active {
  color: var(--paper);
  background: var(--blue-dark);
}

.icon-button {
  width: 34px;
  height: 34px;
  color: var(--blue-dark);
  border: 1px solid var(--line);
  border-radius: 3px;
}

.category-nav {
  width: min(calc(100% - 40px), var(--max-width));
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 30px;
  margin: 0 auto;
  color: #355457;
  border-top: 1px solid #edf2f1;
}

.category-nav a {
  position: relative;
  padding: 11px 0 10px;
  font-size: 12px;
  font-weight: 750;
}

.category-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 2px;
  background: var(--yellow);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.category-nav a:hover::after,
.category-nav a:focus-visible::after {
  transform: scaleX(1);
}

.hero {
  height: 520px;
  min-height: 520px;
  background: #17383a;
  border-bottom: 1px solid #c5d3d1;
}

.hero-media {
  inset: 0;
  opacity: 1;
}

.hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1;
  filter: saturate(0.84) contrast(1.02);
  object-position: 58% 50%;
}

.hero-overlay {
  background: linear-gradient(90deg, rgba(9, 35, 35, 0.88) 0%, rgba(9, 35, 35, 0.68) 42%, rgba(9, 35, 35, 0.24) 72%, rgba(9, 35, 35, 0.08) 100%);
}

.hero-inner {
  width: min(calc(100% - 40px), var(--max-width));
  padding-top: 92px;
}

.hero .eyebrow {
  color: var(--yellow);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.hero h1 {
  max-width: 650px;
  margin: 14px 0 18px;
  color: var(--paper);
  font-size: 48px;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.hero-lead {
  max-width: 560px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
  line-height: 1.8;
}

.hero-actions {
  margin-top: 28px;
}

.button {
  min-height: 40px;
  padding: 10px 17px;
  border-radius: 3px;
  font-size: 12px;
}

.button-primary {
  color: #173b36;
  background: var(--yellow);
}

.button-primary:hover {
  background: #f5cc52;
}

.button-secondary {
  color: var(--paper);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.45);
}

.hero-facts {
  max-width: 720px;
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.28);
}

.hero-facts dt {
  color: var(--yellow);
  font-size: 19px;
}

.hero-facts dd {
  color: rgba(255, 255, 255, 0.68);
  font-size: 11px;
}

.hero-next {
  right: 28px;
  bottom: 24px;
  color: var(--paper);
  background: rgba(23, 63, 59, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 3px;
}

.section,
.capabilities-band,
.about-band {
  padding: 64px 0;
}

.common-parts-section {
  background: #edf2f1;
}

.section-heading {
  gap: 48px;
  margin-bottom: 34px;
}

.section-heading h2,
.capabilities-heading h2,
.about-copy h2,
.contact-copy h2 {
  color: #203b3d;
  font-size: 34px;
  letter-spacing: 0.01em;
}

.section-heading > p,
.contact-copy > p,
.about-copy > p {
  color: #647477;
  font-size: 14px;
  line-height: 1.8;
}

.section-kicker {
  color: var(--blue-dark);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.common-parts-grid {
  gap: 16px;
}

.common-part-card {
  min-height: 378px;
  background: var(--paper);
  border: 1px solid #d7e0df;
  border-radius: 4px;
  box-shadow: 0 4px 14px rgba(22, 46, 48, 0.04);
}

.common-part-card:hover {
  transform: translateY(-3px);
  border-color: #82b9b3;
  box-shadow: var(--shadow);
}

.common-part-image {
  aspect-ratio: 4 / 3;
  background: #f8faf9;
  border-bottom: 1px solid #e0e7e5;
}

.common-part-body {
  padding: 17px 18px 18px;
}

.common-part-body > span {
  margin-bottom: 6px;
  color: #397269;
  font-size: 10px;
}

.common-part-body code {
  color: #b85b43;
  font-size: 11px;
}

.common-part-body h3 {
  margin: 8px 0 16px;
  color: #253c3f;
  font-size: 16px;
}

.common-part-body a {
  color: var(--blue-dark);
  font-size: 12px;
}

.company-video-section,
.products-section,
.ventilation-hoses-section,
.contact-section {
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.company-video-frame {
  box-shadow: 0 8px 24px rgba(22, 46, 48, 0.12);
}

.products-section {
  padding-top: 64px;
}

.category-grid {
  gap: 14px;
}

.category-card {
  min-height: 208px;
  padding: 24px;
  background: #f7f9f8;
  border: 1px solid var(--line);
  border-top: 3px solid #8ab9ad;
  border-radius: 3px;
  box-shadow: none;
}

.category-card:hover {
  transform: translateY(-3px);
  border-color: #8ab9ad;
  box-shadow: var(--shadow);
}

.category-card:nth-child(3n + 2) {
  border-top-color: var(--yellow);
}

.category-card:nth-child(3n + 3) {
  border-top-color: var(--cyan);
}

.category-icon {
  width: 38px;
  height: 38px;
  color: var(--paper);
  background: #2c7165;
  border-radius: 3px;
}

.category-card h3 {
  margin-top: 17px;
  color: #294344;
  font-size: 17px;
}

.category-card p {
  color: #657577;
  font-size: 13px;
}

.category-card > span {
  color: #397269;
  font-size: 11px;
}

.ventilation-hoses-section {
  background: #edf2f1;
}

.ventilation-hose-card,
.ventilation-specs div {
  border-radius: 3px;
}

.capabilities-band {
  color: var(--paper);
  background: #1d554d;
}

.capabilities-heading h2,
.capabilities-heading p,
.process-list li,
.process-list h3,
.process-list p {
  color: var(--paper);
}

.about-band {
  background: var(--paper);
}

.about-year {
  background: #1d554d;
}

.contact-section {
  background: #edf2f1;
}

.contact-copy h2 {
  color: #203b3d;
}

.inquiry-form {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
  box-shadow: var(--shadow);
}

.form-heading h3 {
  color: #284b4a;
}

.form-grid input,
.form-grid textarea {
  border-color: #c8d6d3;
  border-radius: 2px;
}

.site-footer {
  background: #153f3a;
}

.footer-brands {
  border-bottom-color: rgba(255, 255, 255, 0.16);
}

@media (max-width: 900px) {
  :root {
    --header-height: 74px;
  }

  .top-utility-bar,
  .category-nav,
  .desktop-nav,
  .desktop-mail {
    display: none;
  }

  .header-inner {
    height: 74px;
  }

  .mobile-menu-button {
    display: grid;
  }

  .hero {
    height: 540px;
    min-height: 540px;
  }

  .hero-inner {
    padding-top: 86px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 14px;
  }

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

@media (max-width: 600px) {
  :root {
    --header-height: 74px;
  }

  .header-inner,
  .section-inner,
  .footer-brands-inner,
  .footer-inner {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .brand {
    min-width: 0;
  }

  .brand img {
    width: 104px;
  }

  .hero {
    height: 560px;
    min-height: 560px;
  }

  .hero-inner {
    width: min(calc(100% - 28px), var(--max-width));
    padding-top: 72px;
  }

  .hero h1 {
    font-size: 35px;
  }

  .hero-lead {
    font-size: 14px;
  }

  .hero-actions {
    flex-wrap: wrap;
  }

  .hero-facts {
    gap: 12px;
  }

  .hero-facts dd {
    display: block;
  }

  .section,
  .capabilities-band,
  .about-band {
    padding: 50px 0;
  }

  .section-heading h2,
  .capabilities-heading h2,
  .about-copy h2,
  .contact-copy h2 {
    font-size: 29px;
  }

  .common-parts-grid,
  .category-grid {
    grid-template-columns: 1fr;
  }

  .company-video-frame video {
    min-height: 196px;
  }

  .footer-brands-line {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }
}