:root {
  --hc-bg: #ffffff;
  --hc-surface: #f3f6f5;
  --hc-surface-strong: #e8eeeb;
  --hc-ink: #111714;
  --hc-muted: #5d6863;
  --hc-green: #1c614d;
  --hc-green-hover: #154d3d;
  --hc-green-dark: #0d3328;
  --hc-mint: #b8f5a8;
  --hc-line: #dce3e0;
  --hc-hero-overlay: rgba(8, 20, 15, 0.5);
  --hc-radius: 16px;
  --hc-content: min(1320px, 100%);
  --font-display: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Nirmala UI', Arial, sans-serif;
  --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Nirmala UI', Arial, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

html {
  scroll-padding-top: 6.5rem;
}

body {
  color: var(--hc-ink);
  background: var(--hc-bg);
  font-family: var(--font-body);
  line-height: 1.65;
}

::selection {
  color: var(--hc-ink);
  background: var(--hc-mint);
}

h1,
h2,
h3 {
  color: inherit;
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--hc-green);
  outline-offset: 3px;
}

.skip-link {
  color: #fff;
  background: var(--hc-green);
}

/* Header: white over the hero, white surface after scrolling. */
.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 50;
  min-height: 5.5rem;
  padding: 0 var(--page-pad);
  color: #fff;
  background: transparent;
  border-bottom: 1px solid transparent;
  backdrop-filter: none;
  transition:
    color 260ms ease,
    background-color 260ms ease,
    border-color 260ms ease;
}

.site-header.is-scrolled {
  color: var(--hc-ink);
  background: #fff;
  border-bottom-color: var(--hc-line);
}

.site-header .brand,
.site-header .brand-text,
.site-header .site-nav a,
.site-header .language-switch,
.site-header .menu-button {
  color: inherit;
}

.brand {
  gap: 0.7rem;
}

.brand-mark {
  grid-template-columns: repeat(3, 0.31rem);
  gap: 0.13rem;
  width: 1.25rem;
  height: 1.75rem;
}

.brand-mark i {
  background: #fff;
  transition: background-color 260ms ease;
}

.site-header.is-scrolled .brand-mark i {
  background: var(--hc-green);
}

.brand-text {
  font-size: 0.66rem;
  line-height: 1.08;
  letter-spacing: 0.055em;
}

.brand-text strong {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.site-nav {
  gap: clamp(1.15rem, 2vw, 2rem);
}

.site-nav a {
  padding: 2.05rem 0;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  opacity: 0.88;
  transition: color 220ms ease, opacity 220ms ease;
}

.site-header.is-scrolled .site-nav a {
  color: var(--hc-ink);
}

.site-nav a:hover {
  color: inherit;
  opacity: 1;
}

.site-nav a::after {
  bottom: 1.6rem;
  height: 2px;
  background: #fff;
}

.site-header.is-scrolled .site-nav a::after {
  background: var(--hc-green);
}

.language-switch-label {
  color: currentColor;
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  opacity: 0.65;
}

.language-switch {
  min-width: 4.4rem;
  padding: 0.68rem 1.7rem 0.68rem 0.72rem;
  color: #fff;
  background: transparent;
  border-color: rgba(255, 255, 255, 0.62);
  border-radius: 999px;
  transition: color 260ms ease, border-color 260ms ease;
}

.site-header.is-scrolled .language-switch {
  color: var(--hc-ink);
  border-color: var(--hc-line);
}

.language-switch option {
  color: var(--hc-ink);
  background: #fff;
}

.header-rfq {
  min-width: 7.8rem;
  padding: 0.78rem 1.15rem;
  color: #fff;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  transition: color 220ms ease, background-color 220ms ease, border-color 220ms ease;
}

.header-rfq:hover {
  color: var(--hc-green);
  background: #fff;
}

.site-header.is-scrolled .header-rfq {
  color: #fff;
  background: var(--hc-green);
  border-color: var(--hc-green);
}

.site-header.is-scrolled .header-rfq:hover {
  color: #fff;
  background: var(--hc-green-hover);
  border-color: var(--hc-green-hover);
}

.menu-lines i {
  background: currentColor;
}

/* Full-bleed image hero. */
.hero {
  position: relative;
  min-height: max(46rem, 92vh);
  padding: 10rem var(--page-pad) 4.5rem;
  overflow: hidden;
  color: #fff;
  background: #0b1712;
}

.hero::before {
  display: none;
}

.hero-grid {
  position: static;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  width: var(--hc-content);
  min-height: calc(max(46rem, 92vh) - 14.5rem);
  margin: 0 auto;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 49rem;
}

.hero .eyebrow {
  margin-bottom: 1.5rem;
  color: rgba(255, 255, 255, 0.86);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
}

.hero h1 {
  max-width: 14ch;
  color: #fff;
  font-size: clamp(3.3rem, 6.1vw, 5rem);
  font-weight: 650;
  line-height: 0.99;
  letter-spacing: -0.04em;
}

.hero h1 span,
.hero h1 em {
  display: block;
}

.hero h1 em {
  color: #fff;
  font-style: normal;
}

.hero-body {
  max-width: 43rem;
  margin-top: 1.7rem;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(1rem, 1.25vw, 1.15rem);
  line-height: 1.7;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  min-height: 0;
  overflow: hidden;
  clip-path: none;
}

.hero-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 46%;
  filter: saturate(0.82) contrast(1.04);
}

.hero-media::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(90deg, rgba(4, 13, 9, 0.82) 0%, var(--hc-hero-overlay) 50%, rgba(4, 13, 9, 0.18) 100%);
}

.hero-media .media-note {
  right: var(--page-pad);
  bottom: 1.2rem;
  left: auto;
  z-index: 3;
}

.hero-coordinate {
  display: none;
}

.button-row {
  margin-top: 2rem;
}

.button {
  min-height: 3.15rem;
  padding: 0.9rem 1.35rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
}

.hero .button-accent {
  color: var(--hc-green);
  background: #fff;
  border-color: #fff;
}

.hero .button-accent:hover {
  color: #fff;
  background: var(--hc-green);
  border-color: var(--hc-green);
}

.hero .button-ghost {
  color: #fff;
  background: transparent;
  border-color: rgba(255, 255, 255, 0.72);
}

.hero .button-ghost:hover {
  color: var(--hc-green);
  background: #fff;
  border-color: #fff;
}

.status-note {
  margin-top: 1.7rem;
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.77rem;
}

.status-note > span:first-child {
  width: 0.42rem;
  height: 0.42rem;
  background: #fff;
  opacity: 0.72;
}

.stats-band {
  position: relative;
  z-index: 2;
  width: 100%;
  color: var(--hc-ink);
  background: #fff;
  border-top: 0;
  border-bottom: 1px solid var(--hc-line);
}

.stats-band article {
  min-height: 9rem;
  padding: 1.7rem var(--page-pad);
  border-right: 1px solid var(--hc-line);
}

.stats-band article:last-child {
  border-right: 0;
}

.stats-band article > span,
.stats-band p {
  color: var(--hc-muted);
}

.stats-band strong {
  color: var(--hc-ink);
  font-size: clamp(1.1rem, 1.5vw, 1.35rem);
  letter-spacing: -0.025em;
}

/* Shared light section language. */
.section,
.section-light,
.section-dark:not(.hero),
.applications,
.manufacturing,
.quality-section,
.resources,
.about-section {
  color: var(--hc-ink);
  background: #fff;
}

.section {
  padding: clamp(6rem, 9vw, 9rem) var(--page-pad);
}

.section > * {
  width: var(--hc-content);
  margin-right: auto;
  margin-left: auto;
}

.section-intro {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(3rem, 7vw, 7rem);
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.section-intro h2,
.manufacturing-copy h2,
.quality-copy h2,
.resource-copy h2,
.about-copy h2,
.rfq-intro h2 {
  color: inherit;
  font-size: clamp(2.7rem, 4.8vw, 4.7rem);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.section-intro h2 {
  grid-column: 1;
}

.section-intro > p:last-child,
.manufacturing-copy > p:not(.eyebrow),
.quality-copy > p:not(.eyebrow),
.resource-copy > p:not(.eyebrow),
.about-copy > p:not(.eyebrow),
.rfq-intro > p:not(.eyebrow) {
  max-width: 65ch;
  color: var(--hc-muted);
  font-size: 1rem;
  line-height: 1.75;
}

.section-intro > p:last-child {
  grid-column: 2;
  align-self: end;
}

.section > .section-intro > .eyebrow,
.manufacturing-copy > .eyebrow,
.quality-copy > .eyebrow,
.resource-copy > .eyebrow,
.about-copy > .eyebrow,
.rfq-intro > .eyebrow {
  display: none;
}

.button-accent {
  color: #fff;
  background: var(--hc-green);
  border-color: var(--hc-green);
}

.button-accent:hover {
  color: #fff;
  background: var(--hc-green-hover);
  border-color: var(--hc-green-hover);
}

.button-ghost {
  color: var(--hc-ink);
  background: transparent;
  border-color: var(--hc-line);
}

.button-ghost:hover {
  color: var(--hc-green);
  background: var(--hc-surface);
  border-color: var(--hc-green);
}

.text-link {
  color: var(--hc-green);
  border-color: var(--hc-line);
}

.text-link:hover {
  color: var(--hc-green-hover);
  background: var(--hc-surface);
}

.media-note {
  padding: 0.45rem 0.65rem;
  color: #fff;
  background: var(--hc-green);
  border: 0;
  font-size: 0.56rem;
  font-weight: 600;
  letter-spacing: 0.035em;
}

/* Products. */
.product-grid {
  gap: 1.35rem;
}

.product-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
  color: var(--hc-ink);
  background: #fff;
  border: 1px solid var(--hc-line);
  border-radius: var(--hc-radius);
}

.product-primary {
  grid-template-columns: none;
}

.product-visual,
.product-schematic {
  min-height: 29rem;
  overflow: hidden;
  background: var(--hc-surface);
}

.product-visual::after,
.quality-media::after {
  display: none;
}

.product-visual img {
  transition: transform 700ms var(--ease);
}

.product-card:hover .product-visual img {
  transform: scale(1.025);
}

.product-index {
  color: #fff;
  background: rgba(17, 23, 20, 0.78);
  border-radius: 999px;
}

.product-content {
  flex: 1;
  padding: clamp(1.7rem, 3.5vw, 2.8rem);
}

.product-badge {
  color: var(--hc-green);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
}

.product-content h3 {
  margin-top: 0.65rem;
  font-size: clamp(2.2rem, 3.8vw, 3.8rem);
}

.product-content > p:not(.product-badge, .spec-note) {
  color: var(--hc-muted);
}

.capacity-tabs {
  padding: 0.3rem;
  background: var(--hc-surface);
  border: 1px solid var(--hc-line);
  border-radius: 999px;
}

.capacity-tab {
  color: var(--hc-muted);
  background: transparent;
  border: 0;
  border-radius: 999px;
}

.capacity-tab.active,
.capacity-tab:hover {
  color: #fff;
  background: var(--hc-green);
}

.parameter-grid {
  border-color: var(--hc-line);
}

.parameter-grid > div {
  border-color: var(--hc-line);
}

.parameter-grid dt,
.spec-note {
  color: var(--hc-muted);
}

.parameter-grid dd {
  color: var(--hc-ink);
}

.product-schematic::before,
.product-schematic::after,
.cell-outline,
.cell-cap,
.cell-polarity {
  border-color: var(--hc-green);
}

.cell-cap,
.cell-polarity {
  background: var(--hc-green);
}

.dimension-line,
.product-schematic > p {
  color: var(--hc-green);
}

/* Applications: one large tile and three supporting tiles. */
.applications {
  background: var(--hc-surface);
}

.applications .section-intro h2,
.applications .section-intro > p:last-child {
  color: inherit;
}

.application-list {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-rows: repeat(3, minmax(13.5rem, 1fr));
  gap: 1rem;
}

.application-list .application-card {
  position: relative;
  display: grid;
  grid-column: 8 / -1;
  grid-template-columns: minmax(8rem, 0.9fr) minmax(0, 1.1fr);
  gap: 0;
  align-items: stretch;
  min-height: 13.5rem;
  padding: 0;
  overflow: hidden;
  color: var(--hc-ink);
  background: #fff;
  border: 0;
  border-radius: var(--hc-radius);
}

.application-list .application-card::before {
  display: none;
}

.application-list .application-card:hover {
  padding: 0;
}

.application-list .application-card-pack {
  grid-column: 1 / 8;
  grid-row: 1 / span 3;
  grid-template-columns: 1fr;
  grid-template-rows: minmax(24rem, 1.7fr) minmax(14rem, 0.8fr);
}

.application-card figure {
  position: relative;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.application-card figure img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms var(--ease);
}

.application-card:hover figure img {
  transform: scale(1.035);
}

.application-card figure .media-note {
  right: 0.8rem;
  bottom: 0.8rem;
  left: 0.8rem;
  width: max-content;
  max-width: calc(100% - 1.6rem);
}

.application-card > div {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  align-content: center;
  gap: 0.7rem 1rem;
  padding: clamp(1.4rem, 2.5vw, 2.3rem);
}

.application-card > div > span {
  color: var(--hc-green);
  font-size: 0.72rem;
  font-weight: 600;
}

.application-card h3 {
  grid-column: 1;
  color: var(--hc-ink);
  font-size: clamp(1.35rem, 2vw, 2rem);
  line-height: 1.08;
}

.application-card p {
  grid-column: 1;
  max-width: 38ch;
  color: var(--hc-muted);
  font-size: 0.88rem;
  line-height: 1.65;
}

.application-card i {
  grid-column: 2;
  grid-row: 1 / span 3;
  align-self: center;
  color: var(--hc-green);
  font-size: 1.1rem;
  font-style: normal;
}

/* Manufacturing image stage. */
.manufacturing {
  background: #fff;
}

.manufacturing-grid {
  position: relative;
  display: grid;
  min-height: 41rem;
  overflow: hidden;
  border-radius: var(--hc-radius);
}

.manufacturing-copy {
  position: relative;
  z-index: 3;
  align-self: end;
  max-width: 48rem;
  padding: clamp(2rem, 6vw, 5rem);
  color: #fff;
}

.manufacturing-copy h2 {
  color: #fff;
}

.manufacturing-copy > p:not(.eyebrow) {
  color: rgba(255, 255, 255, 0.8);
}

.manufacturing-copy .button-accent {
  color: var(--hc-green);
  background: #fff;
  border-color: #fff;
}

.manufacturing-copy .button-accent:hover {
  color: #fff;
  background: var(--hc-green);
  border-color: var(--hc-green);
}

.build-status {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
}

.build-status span {
  background: #fff;
}

.manufacturing-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  min-height: 0;
  clip-path: none;
}

.manufacturing-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.05);
}

.manufacturing-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(6, 21, 16, 0.86) 0%, rgba(6, 21, 16, 0.56) 54%, rgba(6, 21, 16, 0.2) 100%);
}

.manufacturing-media .media-note {
  right: 1rem;
  bottom: 1rem;
  left: auto;
  z-index: 2;
}

.build-steps {
  gap: 1rem;
  margin-top: 1rem;
  border: 0;
}

.build-steps article {
  min-height: 15rem;
  padding: 2rem;
  color: var(--hc-ink);
  background: var(--hc-surface);
  border: 1px solid var(--hc-line);
  border-radius: 12px;
}

.build-steps article + article {
  border-left: 1px solid var(--hc-line);
}

.build-steps article > span {
  color: var(--hc-green);
}

.build-steps h3 {
  color: var(--hc-ink);
}

.build-steps p {
  color: var(--hc-muted);
}

/* Quality, resources, and about. */
.quality-section {
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(3rem, 7vw, 7rem);
  align-items: center;
}

.quality-media {
  min-height: 43rem;
  overflow: hidden;
  clip-path: none;
  border-radius: var(--hc-radius);
}

.quality-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.quality-media .media-note {
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  width: max-content;
  max-width: calc(100% - 2rem);
}

.quality-copy > p:not(.eyebrow) {
  margin-top: 1.4rem;
}

.quality-list {
  margin-top: 2.2rem;
  border-top: 1px solid var(--hc-line);
}

.quality-list article {
  padding: 1.35rem 0;
  border-bottom-color: var(--hc-line);
}

.quality-list article > span {
  color: var(--hc-green);
  background: var(--hc-surface);
  border-radius: 999px;
}

.quality-list h3 {
  color: var(--hc-ink);
}

.quality-list p {
  color: var(--hc-muted);
}

.resources {
  grid-template-columns: minmax(18rem, 0.75fr) minmax(24rem, 1.25fr);
  gap: clamp(3rem, 8vw, 8rem);
  background: var(--hc-surface);
}

.resource-list {
  border-top: 1px solid var(--hc-line);
}

.resource-list article {
  padding: 1.45rem 1rem;
  color: var(--hc-ink);
  background: #fff;
  border-bottom-color: var(--hc-line);
}

.resource-list article > span,
.resource-list article > p {
  color: var(--hc-muted);
}

.resource-list h3 {
  color: var(--hc-ink);
}

.resource-list i {
  color: var(--hc-green);
}

.about-section {
  display: block;
  min-height: 0;
  text-align: center;
}

.about-graphic {
  display: none;
}

.about-copy {
  max-width: 58rem;
  margin: 0 auto;
}

.about-copy h2 {
  max-width: 13ch;
  margin: 0 auto;
}

.about-copy > p:not(.eyebrow) {
  margin: 1.5rem auto 0;
}

.about-note {
  padding: 1.25rem 1.5rem;
  color: var(--hc-muted);
  background: var(--hc-surface);
  border: 1px solid var(--hc-line);
  border-radius: 12px;
  text-align: left;
}

/* Deep-green RFQ anchor. */
.rfq-section {
  grid-template-columns: minmax(18rem, 0.8fr) minmax(30rem, 1.2fr);
  gap: clamp(3rem, 8vw, 8rem);
  color: #fff;
  background: var(--hc-green-dark);
}

.rfq-intro h2 {
  color: #fff;
}

.rfq-intro > p:not(.eyebrow) {
  color: rgba(255, 255, 255, 0.72);
}

.rfq-steps {
  color: rgba(255, 255, 255, 0.58);
  border-color: rgba(255, 255, 255, 0.24);
}

.rfq-steps span + span {
  border-left-color: rgba(255, 255, 255, 0.24);
}

.rfq-steps span.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.rfq-form {
  color: var(--hc-ink);
  background: #fff;
  border: 0;
  border-radius: var(--hc-radius);
}

.field label {
  color: var(--hc-muted);
}

.field input,
.field select,
.field textarea {
  color: var(--hc-ink);
  background: var(--hc-surface);
  border-color: var(--hc-line);
  border-radius: 10px;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  background: #fff;
  border-color: var(--hc-green);
}

.rfq-form .button-ghost {
  color: var(--hc-ink);
  border-color: var(--hc-line);
}

.form-error {
  color: #8d211c;
  background: #fff0ef;
  border-color: #e8b6b2;
}

.form-success > span {
  color: #fff;
  background: var(--hc-green);
}

.form-success h3,
.form-success p {
  color: var(--hc-ink);
}

.form-success p {
  color: var(--hc-muted);
}

.form-success .text-link {
  color: var(--hc-green);
}

/* Footer and first-visit language gate. */
.site-footer {
  color: #fff;
  background: #071d17;
  border-top-color: rgba(255, 255, 255, 0.12);
}

.site-footer .brand-mark i {
  background: var(--hc-mint);
}

.site-footer > p,
.site-footer .footer-disclaimer {
  color: rgba(255, 255, 255, 0.58);
}

.site-footer > a {
  color: var(--hc-mint);
}

.language-gate {
  padding: 1.5rem;
  background: rgba(7, 29, 23, 0.92);
}

.language-panel {
  overflow: hidden;
  color: var(--hc-ink);
  background: #fff;
  border: 0;
  border-radius: var(--hc-radius);
  box-shadow: 0 8px 8px rgba(4, 14, 10, 0.18);
}

.language-panel-head {
  color: #fff;
  background: var(--hc-green);
}

.language-panel-copy h2 {
  max-width: 13ch;
  font-size: clamp(2.7rem, 5.5vw, 5rem);
  font-weight: 600;
  letter-spacing: -0.04em;
}

.language-panel-copy > p:last-child,
.language-default {
  color: var(--hc-muted);
}

.language-options {
  border-color: var(--hc-line);
}

.language-options button {
  color: var(--hc-ink);
  border-color: var(--hc-line);
}

.language-options button:hover,
.language-options button:focus-visible,
.language-options button[aria-pressed='true'] {
  color: #fff;
  background: var(--hc-green);
}

.language-options button:hover span,
.language-options button:hover i,
.language-options button:focus-visible span,
.language-options button:focus-visible i,
.language-options button[aria-pressed='true'] span,
.language-options button[aria-pressed='true'] i {
  color: rgba(255, 255, 255, 0.78);
}

.language-options span,
.language-options i {
  color: var(--hc-muted);
}

/* Content stays visible even before scroll observers run. */
.reveal,
.reveal.is-visible {
  opacity: 1;
  transform: none;
  transition: none;
}

@media (max-width: 1180px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  body.nav-open .site-header {
    color: var(--hc-ink);
    background: #fff;
    border-bottom-color: var(--hc-line);
  }

  body.nav-open .site-header .brand-mark i {
    background: var(--hc-green);
  }

  .site-nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    z-index: 40;
    display: none;
    align-content: start;
    height: calc(100dvh - 5.5rem);
    padding: 1.5rem var(--page-pad) 2.5rem;
    color: var(--hc-ink);
    background: #fff;
    border-top: 1px solid var(--hc-line);
  }

  .site-nav.open {
    display: grid;
  }

  .site-nav a,
  .site-header:not(.is-scrolled) .site-nav a {
    padding: 1rem 0;
    color: var(--hc-ink);
    border-bottom-color: var(--hc-line);
    font-size: 1.05rem;
  }

  .site-nav a::after {
    display: none;
  }

  .site-header .site-nav a.mobile-rfq-link {
    margin-top: 1rem;
    padding: 0.95rem 1rem;
    color: #fff;
    background: var(--hc-green);
    border: 0;
    border-radius: 999px;
  }

  .mobile-language-options {
    gap: 0.55rem;
  }

  .mobile-language-options button {
    color: var(--hc-ink);
    background: var(--hc-surface);
    border-color: var(--hc-line);
    border-radius: 999px;
  }

  .mobile-language-options button[aria-pressed='true'] {
    color: #fff;
    background: var(--hc-green);
    border-color: var(--hc-green);
  }

  .menu-button {
    min-width: 44px;
    min-height: 44px;
    color: inherit;
    font-size: 0.76rem;
    letter-spacing: 0;
    text-transform: none;
  }

  .brand {
    min-height: 44px;
  }

  .hero-grid,
  .manufacturing-grid {
    grid-template-columns: 1fr;
  }

  .resources,
  .rfq-section {
    grid-template-columns: 1fr;
  }

  .quality-section {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 3rem;
  }
}

@media (max-width: 920px) {
  .section-intro {
    display: block;
  }

  .section-intro > p:last-child {
    margin-top: 1.25rem;
  }

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

  .application-list .application-card,
  .application-list .application-card-pack {
    grid-column: auto;
    grid-row: auto;
    grid-template-columns: 1fr;
    grid-template-rows: 18rem auto;
  }

  .quality-section {
    grid-template-columns: 1fr;
  }

  .quality-media {
    min-height: 34rem;
  }
}

@media (max-width: 760px) {
  :root {
    --page-pad: 1.15rem;
    --section-pad: 5rem;
  }

  html {
    scroll-padding-top: 5rem;
  }

  .site-header {
    min-height: 4.75rem;
  }

  .site-nav {
    height: calc(100dvh - 4.75rem);
  }

  .brand-text strong {
    font-size: 0.7rem;
  }

  .brand-text {
    font-size: 0.59rem;
  }

  .hero {
    min-height: max(45rem, 100svh);
    padding: 8.5rem var(--page-pad) 3.7rem;
  }

  .hero-grid {
    min-height: calc(max(45rem, 100svh) - 12.2rem);
    align-items: flex-end;
  }

  .hero h1 {
    max-width: 12ch;
    font-size: clamp(2.65rem, 12vw, 3.45rem);
  }

  html[lang='bn'] .hero h1 {
    font-size: clamp(2.35rem, 10.8vw, 3.1rem);
  }

  .hero-body {
    margin-top: 1.35rem;
    font-size: 0.96rem;
    line-height: 1.65;
  }

  .hero-media img {
    object-position: 62% center;
  }

  .hero-media::after {
    background: linear-gradient(180deg, rgba(4, 13, 9, 0.48) 0%, rgba(4, 13, 9, 0.7) 48%, rgba(4, 13, 9, 0.9) 100%);
  }

  .hero-media .media-note {
    right: 1rem;
    bottom: 0.65rem;
    left: 1rem;
    width: max-content;
    max-width: calc(100% - 2rem);
  }

  .button-row,
  .button-row .button {
    width: 100%;
  }

  .button-row {
    gap: 0.7rem;
  }

  .status-note {
    align-items: flex-start;
  }

  .status-note > span:first-child {
    margin-top: 0.48rem;
  }

  .stats-band {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-band article {
    min-height: 7.5rem;
    padding: 1.25rem 1rem;
    border-bottom: 1px solid var(--hc-line);
  }

  .section {
    padding: 5rem var(--page-pad);
  }

  .section-intro {
    margin-bottom: 2.7rem;
  }

  .section-intro h2,
  .manufacturing-copy h2,
  .resource-copy h2,
  .about-copy h2,
  .rfq-intro h2,
  .quality-copy h2 {
    font-size: clamp(2.35rem, 10.5vw, 3.35rem);
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .product-visual,
  .product-schematic {
    min-height: 22rem;
  }

  .product-content {
    padding: 1.5rem;
  }

  .capacity-tabs {
    width: 100%;
  }

  .capacity-tab {
    flex: 1;
    min-height: 44px;
  }

  .parameter-grid {
    grid-template-columns: 1fr;
  }

  .application-list {
    grid-template-columns: 1fr;
  }

  .application-list .application-card,
  .application-list .application-card-pack {
    grid-template-rows: 17rem auto;
  }

  .application-card > div {
    padding: 1.4rem;
  }

  .manufacturing-grid {
    min-height: 39rem;
  }

  .manufacturing-copy {
    padding: 1.5rem;
  }

  .manufacturing-copy > p:not(.eyebrow) {
    font-size: 0.92rem;
  }

  .manufacturing-media img {
    object-position: 58% center;
  }

  .manufacturing-media::after {
    background: linear-gradient(180deg, rgba(6, 21, 16, 0.26) 0%, rgba(6, 21, 16, 0.7) 46%, rgba(6, 21, 16, 0.94) 100%);
  }

  .build-steps {
    grid-template-columns: 1fr;
  }

  .build-steps article {
    min-height: 12rem;
  }

  .quality-media {
    min-height: 28rem;
  }

  .resources,
  .rfq-section {
    gap: 2.7rem;
  }

  .resource-list article {
    grid-template-columns: 4.25rem 1fr 1rem;
    padding: 1.2rem 0.9rem;
  }

  .resource-list article > p {
    grid-column: 2 / -1;
  }

  .about-copy {
    text-align: left;
  }

  .about-copy h2 {
    margin-left: 0;
  }

  .rfq-form {
    border-radius: 12px;
  }

  .form-step.active {
    grid-template-columns: 1fr;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }

  .language-gate {
    place-items: start center;
    padding: 0;
  }

  .language-panel {
    min-height: 100dvh;
    border-radius: 0;
  }

  .language-panel-copy {
    padding-top: 2.4rem;
  }

  .language-panel-copy h2 {
    font-size: clamp(2.45rem, 12vw, 3.6rem);
  }

  .language-options {
    grid-template-columns: 1fr;
  }

  .language-options button {
    border-right: 0;
    border-bottom: 1px solid var(--hc-line);
  }
}

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

  .site-header,
  .brand-mark i,
  .site-nav a,
  .language-switch,
  .header-rfq,
  .button,
  .product-visual img,
  .application-card figure img {
    transition: none !important;
  }
}