:root {
  --bg-dark: #1a1a1a;
  --bg-hero: #0d0f11;
  --bg-light: #f6f6f4;
  --bg-card-dark: #242424;
  --bg-card-light: #ffffff;
  --bg-process: #171717;
  --bg-footer: #111111;
  --accent: #3ddcff;
  --accent-ink: #0a1518;
  --ink: #171717;
  --ink-2: #5c5c5c;
  --ink-3: #8a8d86;
  --teal: #0e7490;
  --white: #ffffff;
  --grey-1: #e5e5e5;
  --grey-2: #a3a3a3;
  --grey-3: #7a7a7a;
  --grey-4: #6e6e6a;
  --divider: #262626;
  --font-en: "Barlow", "Inter", -apple-system, sans-serif;
  --font-cn: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  /* 版心：内容宽度跟随视口比例（左右各约 6%），仅在超宽屏封顶，避免长行不可读 */
  --container: 2400px;
  --gutter: clamp(24px, 6vw, 152px);
  --container-narrow: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}

body {
  margin: 0;
  background: var(--bg-light);
  color: var(--ink);
  font-family: var(--font-en);
  font-size: 16px;
  line-height: 1.5;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}

html[lang="zh-CN"] body {
  font-family: var(--font-cn);
}

body.menu-open {
  overflow: hidden;
}

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

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

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

button {
  font: inherit;
}

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

.container {
  width: min(100%, var(--container));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: 96px;
}

.section--dark {
  background: var(--bg-dark);
  color: var(--white);
}

.section--light {
  background: var(--bg-light);
  color: var(--ink);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 48px;
}

.section-heading--wide {
  max-width: 900px;
}

.kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 20px;
  color: var(--ink-2);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.2;
  text-transform: uppercase;
}

.kicker::before {
  width: 28px;
  height: 3px;
  flex: 0 0 auto;
  background: var(--accent);
  content: "";
}

.section--dark .kicker,
.final-cta .kicker {
  color: var(--grey-3);
}

.section-title {
  margin: 0;
  color: inherit;
  font-size: clamp(36px, 2.78vw, 40px);
  font-weight: 700;
  line-height: 1.18;
}

.section-copy {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.6;
}

.section--dark .section-copy,
.final-cta .section-copy {
  color: var(--grey-2);
}

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    color 180ms ease;
}

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

.btn:focus-visible,
.nav-link:focus-visible,

.btn--accent {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn--dark {
  border-color: var(--divider);
  background: var(--bg-card-dark);
  color: var(--white);
}

.btn--outline-dark {
  border-color: var(--grey-4);
  background: var(--bg-process);
  color: var(--white);
}

.btn svg {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  stroke: currentColor;
}

.header {
  position: sticky;
  z-index: 50;
  top: 0;
  background: var(--bg-dark);
  color: var(--white);
}

.header__inner {
  display: grid;
  min-height: 88px;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 36px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: var(--accent);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
}

.nav-link {
  color: var(--grey-1);
  font-size: 15px;
  white-space: nowrap;
  transition: color 180ms ease;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--divider);
  border-radius: 6px;
  background: var(--bg-card-dark);
  color: var(--white);
  cursor: pointer;
}

.menu-toggle svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
}

.menu-toggle__close {
  display: none;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__open {
  display: none;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__close {
  display: block;
}

.hero {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  background-color: var(--bg-hero);
  color: var(--white);
}

.hero__image {
  position: absolute;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero::before,
.hero::after {
  position: absolute;
  z-index: 1;
  inset: 0;
  pointer-events: none;
  content: "";
}

.hero::before {
  background: linear-gradient(
    90deg,
    rgba(13, 15, 17, 0.95) 0%,
    rgba(13, 15, 17, 0.82) 33%,
    rgba(13, 15, 17, 0.42) 60%,
    rgba(13, 15, 17, 0.14) 100%
  );
}

.hero::after {
  background: linear-gradient(
    180deg,
    rgba(13, 15, 17, 0) 46%,
    rgba(13, 15, 17, 0.42) 76%,
    var(--bg-dark) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 2;
  display: flex;
  min-height: 560px;
  align-items: center;
  padding-block: 72px;
}

.hero__copy {
  width: min(640px, 52%);
}

.hero .kicker {
  color: var(--accent);
  letter-spacing: 0.1em;
}

.hero__title {
  margin: 0;
  font-size: clamp(48px, 4.45vw, 64px);
  font-weight: 700;
  line-height: 1.08;
  text-wrap: balance;
}

.hero__description {
  max-width: 640px;
  margin: 24px 0 0;
  color: var(--grey-2);
  font-size: 17px;
  line-height: 1.6;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
}

.stats {
  background: var(--bg-dark);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  min-height: 156px;
}

.stat {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 28px 24px;
  border-right: 1px solid var(--divider);
  text-align: center;
}

.stat:last-child {
  border-right: 0;
}

.stat__value {
  color: var(--white);
  font-size: clamp(32px, 2.5vw, 36px);
  font-weight: 700;
  line-height: 1.15;
}

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

.stat__label {
  max-width: 210px;
  margin-top: 10px;
  color: var(--grey-3);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.45;
  text-transform: uppercase;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.product-card {
  overflow: hidden;
  border: 1px solid var(--divider);
  border-radius: 6px;
  background: var(--bg-card-light);
}

.product-card--featured {
  display: grid;
  min-height: 480px;
  grid-column: 1 / -1;
  grid-template-columns: minmax(0, 1.65fr) minmax(310px, 0.85fr);
}

.product-card__media {
  min-width: 0;
  overflow: hidden;
  background: var(--bg-card-light);
}

.product-card--featured .product-card__media {
  min-height: 480px;
}

.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 400ms ease;
}

.product-card__media img.product-card__image--contain {
  padding: 18px;
  object-fit: contain;
}

.product-card:hover .product-card__media img {
  transform: scale(1.015);
}

.product-card__body {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  padding: 32px;
}

.product-card:not(.product-card--featured) .product-card__media {
  aspect-ratio: 16 / 10;
  border-bottom: 1px solid var(--divider);
}

.product-card:not(.product-card--featured) .product-card__body {
  min-height: 205px;
}

.product-card__eyebrow {
  margin: 0 0 10px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.product-card__title {
  margin: 0;
  color: var(--ink);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}

.product-card--featured .product-card__title {
  font-size: 26px;
}

.product-card__description {
  margin: 12px 0 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.55;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.chip {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 4px 12px;
  border: 1px solid var(--grey-1);
  border-radius: 999px;
  color: var(--ink-2);
  font-size: 12px;
  line-height: 1.2;
}

.product-note {
  margin: 32px 0 0;
  color: var(--ink-3);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  text-transform: uppercase;
  text-align: center;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.bento-card {
  display: flex;
  min-height: 218px;
  flex-direction: column;
  padding: 32px;
  border-radius: 6px;
  background: var(--bg-card-dark);
}

.bento-card--wide {
  grid-column: span 2;
}

.bento-card:nth-child(n + 3) {
  min-height: 190px;
}

.bento-card__icon {
  width: 30px;
  height: 30px;
  margin-bottom: 22px;
  fill: none;
  stroke: var(--accent);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.bento-card__title {
  max-width: 520px;
  margin: 0;
  color: var(--white);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.35;
}

.bento-card__description {
  max-width: 590px;
  margin: 12px 0 0;
  color: var(--grey-2);
  font-size: 15px;
  line-height: 1.6;
}

.oem-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(380px, 0.82fr);
  align-items: start;
  gap: 32px;
}

.service-list {
  border: 1px solid var(--grey-1);
  border-radius: 6px;
  background: var(--bg-card-light);
}

.service-item {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 16px;
  padding: 26px 28px;
  border-bottom: 1px solid var(--grey-1);
}

.service-item:last-child {
  border-bottom: 0;
}

.service-item__number {
  color: var(--teal);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.service-item__title {
  margin: 0;
  color: var(--ink);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
}

.service-item__description {
  margin: 8px 0 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.55;
}

.process-card {
  padding: 36px;
  border-radius: 6px;
  background: var(--bg-process);
  color: var(--white);
}

.process-card__title {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
}

.process-card__description {
  margin: 10px 0 0;
  color: var(--grey-2);
  font-size: 14px;
  line-height: 1.55;
}

.process-list {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.process-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 58px;
  border-top: 1px solid var(--divider);
}

.process-item__name {
  min-width: 0;
  color: var(--grey-1);
  font-size: 15px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.process-item__time {
  flex: 0 0 auto;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-align: right;
}

.compliance-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.cert-card {
  display: flex;
  min-height: 190px;
  flex-direction: column;
  padding: 28px;
  border-radius: 6px;
  background: var(--bg-card-dark);
}

.cert-card__title {
  margin: 0;
  color: var(--white);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.25;
}

.cert-card__description {
  margin: 12px 0 0;
  color: var(--grey-2);
  font-size: 14px;
  line-height: 1.55;
}

.cert-card__ref {
  margin: auto 0 0;
  padding-top: 24px;
  color: var(--grey-4);
  font-size: 12px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

/* 带证书缩略图的卡片（首页 COMPLIANCE） */
.cert-card__media {
  display: flex;
  justify-content: center;
  padding: 14px;
  margin-bottom: 20px;
  border-radius: 4px;
  background: #fff;
}

.cert-card__media img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 230px;
  object-fit: contain;
}

/* ---------- About 页：文字/图片对角 2×2 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 44px;
  align-items: start;
}

.about-grid__media {
  border-radius: 14px;
  overflow: hidden;
}

.about-grid__media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}

/* about 页正文加大字号，平衡大图版面 */
.about-grid__cell .section-copy {
  max-width: none;
  font-size: 17px;
  line-height: 1.7;
}

/* ---------- About 页：Qualification 证书墙 ---------- */
.qual-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.qual-card {
  margin: 0;
  padding: 14px 14px 18px;
  border-radius: 10px;
  background: var(--bg-light);
}

.qual-card__media {
  display: flex;
  justify-content: center;
  padding: 12px;
  border-radius: 4px;
  background: #fff;
}

.qual-card__media img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 300px;
  object-fit: contain;
}

.qual-card figcaption {
  margin-top: 14px;
  color: var(--ink-2, #4A4E54);
  font-size: 13.5px;
  line-height: 1.45;
}

@media (max-width: 1199px) {
  .qual-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 1023px) {
  .about-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }
  .about-grid__media img { min-height: 0; aspect-ratio: 16 / 10; }
}

@media (max-width: 767px) {
  .qual-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
  .qual-card__media img { max-height: 220px; }
  .qual-card figcaption { font-size: 12.5px; }
}

.factory-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.44fr) minmax(0, 1fr);
  align-items: center;
  gap: 44px;
}

.factory-content {
  min-width: 0;
}

.factory-images {
  display: grid;
  min-width: 0;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.factory-images img {
  width: 100%;
  height: 100%;
  min-height: 300px;
  aspect-ratio: 4 / 3;
  border-radius: 6px;
  object-fit: cover;
}

.factory-content__title {
  margin: 0;
  color: var(--ink);
  font-size: clamp(23px, 1.7vw, 30px);
  font-weight: 700;
  line-height: 1.3;
}

.factory-content__description {
  margin: 16px 0 0;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.65;
}

.factory-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.factory-stat {
  min-height: 96px;
  padding: 16px 18px 14px;
  border: 1px solid var(--grey-1);
  border-left: 3px solid var(--teal);
  border-radius: 6px;
  background: var(--bg-card-light);
}

.factory-stat__value {
  color: var(--ink);
  font-size: clamp(26px, 1.9vw, 34px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.factory-stat__value--accent {
  color: var(--teal);
}

.factory-stat__label {
  margin-top: 8px;
  color: var(--ink-3);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.45;
  text-transform: uppercase;
}

.final-cta {
  padding-block: 112px;
  background: var(--bg-dark);
  color: var(--white);
}

.final-cta__content {
  max-width: 980px;
}

.final-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 460px);
  align-items: center;
  gap: 64px;
}

.final-cta__inner form {
  color: var(--ink);
}

.final-cta__title {
  margin: 0;
  font-size: clamp(40px, 3.6vw, 52px);
  font-weight: 700;
  line-height: 1.15;
}

.final-cta__description {
  max-width: 820px;
  margin: 22px 0 0;
  color: var(--grey-2);
  font-size: 18px;
  line-height: 1.6;
}

.final-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
}

.final-cta__terms {
  margin: 36px 0 0;
  color: var(--grey-4);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  text-transform: uppercase;
}

.site-footer {
  background: var(--bg-footer);
  color: var(--white);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.7fr repeat(3, minmax(0, 0.75fr));
  gap: 48px;
  padding-block: 72px 60px;
}

.footer-brand__text {
  max-width: 370px;
  margin: 22px 0 0;
  color: var(--grey-2);
  font-size: 14px;
  line-height: 1.65;
}

.footer-column__title {
  margin: 0 0 22px;
  color: var(--grey-3);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

.footer-links a,
.footer-links span {
  color: var(--grey-1);
  font-size: 14px;
  line-height: 1.45;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 26px 30px;
  border-top: 1px solid var(--divider);
  color: var(--grey-3);
  font-size: 12px;
  line-height: 1.5;
}

.footer-bottom__terms {
  color: var(--grey-4);
  text-align: right;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 600ms ease,
    transform 600ms ease;
}

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

.blog-hero {
  padding-block: 80px 72px;
  background: var(--bg-dark);
  color: var(--white);
}

.blog-hero .section-heading {
  margin-bottom: 0;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.post-card {
  display: flex;
  min-width: 0;
  overflow: hidden;
  flex-direction: column;
  border: 1px solid var(--divider);
  border-radius: 6px;
  background: var(--bg-card-light);
}

.post-card__cover {
  display: flex;
  aspect-ratio: 16 / 10;
  align-items: flex-end;
  padding: 24px;
  background:
    linear-gradient(135deg, rgba(61, 220, 255, 0.42), rgba(26, 26, 26, 0.92)),
    var(--bg-card-dark);
}

.post-card__cover span {
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.post-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 28px;
}

.post-card__meta,
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  color: var(--ink-3);
  font-size: 12px;
  line-height: 1.4;
}

.post-card__category,
.article-category {
  color: var(--teal);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.post-card__title {
  margin: 16px 0 0;
  color: var(--ink);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.35;
}

.post-card__title a:hover {
  color: var(--teal);
}

.post-card__excerpt {
  display: -webkit-box;
  overflow: hidden;
  margin: 12px 0 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.post-card__date {
  margin: auto 0 0;
  padding-top: 24px;
  color: var(--ink-3);
  font-size: 12px;
}

.article-header {
  padding-block: 72px 48px;
  background: var(--bg-light);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
  color: var(--ink-3);
  font-size: 13px;
}

.breadcrumbs a:hover {
  color: var(--teal);
}

.article-header__title {
  max-width: 900px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(38px, 4vw, 56px);
  font-weight: 700;
  line-height: 1.12;
}

.article-meta {
  margin-top: 24px;
}

.article-body {
  padding-block: 8px 80px;
  background: var(--bg-light);
}

.article-content {
  width: min(100%, 720px);
  margin-inline: auto;
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.8;
}

.article-content h2,
.article-content h3 {
  color: var(--ink);
  font-weight: 700;
  line-height: 1.3;
}

.article-content h2 {
  margin: 52px 0 18px;
  font-size: 30px;
}

.article-content h3 {
  margin: 36px 0 14px;
  font-size: 22px;
}

.article-content p {
  margin: 0 0 20px;
}

.article-content ul,
.article-content ol {
  margin: 0 0 24px;
  padding-left: 24px;
}

.article-content li + li {
  margin-top: 8px;
}

.article-content a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content blockquote {
  margin: 32px 0;
  padding: 24px 28px;
  border-left: 3px solid var(--accent);
  background: var(--bg-card-light);
  color: var(--ink);
  font-size: 18px;
  line-height: 1.7;
}

.article-content figure {
  margin: 36px 0;
}

.article-content img,
.article-media-placeholder {
  width: 100%;
  border-radius: 6px;
}

.article-media-placeholder {
  display: flex;
  min-height: 360px;
  align-items: flex-end;
  padding: 28px;
  background:
    linear-gradient(135deg, rgba(61, 220, 255, 0.4), rgba(26, 26, 26, 0.94)),
    var(--bg-card-dark);
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.article-content figcaption {
  margin-top: 10px;
  color: var(--ink-3);
  font-size: 12px;
  line-height: 1.5;
}

.article-content table {
  width: 100%;
  margin: 32px 0;
  border-collapse: collapse;
  background: var(--bg-card-light);
  font-size: 14px;
}

.article-content th,
.article-content td {
  padding: 14px 16px;
  border: 1px solid var(--grey-1);
  text-align: left;
  vertical-align: top;
}

.article-content th {
  color: var(--ink);
  font-weight: 700;
}

.article-author {
  width: min(100%, 720px);
  margin: 24px auto 0;
  padding: 24px;
  border: 1px solid var(--grey-1);
  border-radius: 6px;
  background: var(--bg-card-light);
}

.article-author__label {
  margin: 0;
  color: var(--ink-3);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-author__name {
  margin: 10px 0 0;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
}

.related-products {
  padding-block: 72px 96px;
  background: var(--bg-dark);
  color: var(--white);
}

.related-products .section-heading {
  margin-bottom: 36px;
}

.related-product {
  display: grid;
  overflow: hidden;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  border-radius: 6px;
  background: var(--bg-card-dark);
}

.related-product img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
}

.related-product__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 36px;
}

.related-product__title {
  margin: 0;
  color: var(--white);
  font-size: 24px;
  line-height: 1.3;
}

.related-product__copy {
  margin: 12px 0 20px;
  color: var(--grey-2);
  font-size: 14px;
  line-height: 1.6;
}

.text-link {
  color: var(--accent);
  font-weight: 600;
}

.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 1199px) {
  :root {
    --gutter: clamp(24px, 5vw, 56px);
  }

  .section {
    padding-block: 80px;
  }

  .header__inner {
    gap: 24px;
  }

  .nav {
    gap: 22px;
  }

  .hero__copy {
    width: min(650px, 65%);
  }

  .product-card--featured {
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.9fr);
  }

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

  .bento-card--wide {
    grid-column: span 2;
  }

  .factory-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr);
    gap: 36px;
  }

  .factory-images img {
    min-height: 0;
  }

  .oem-layout {
    grid-template-columns: minmax(0, 1fr) minmax(340px, 0.88fr);
  }

  .final-cta__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 44px;
  }

  .service-item {
    padding-inline: 22px;
  }

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

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

@media (max-width: 1023px) {
  .factory-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }
}

@media (min-width: 768px) and (max-width: 1199px) {
  .header__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
    padding-block: 16px;
  }

  .header-actions {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .nav {
    justify-content: flex-start;
    gap: 18px;
  }

  .nav-link {
    font-size: 14px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
  }

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

@media (max-width: 767px) {
  :root {
    --gutter: 24px;
  }

  html {
    scroll-padding-top: 82px;
  }

  .section {
    padding-block: 64px;
  }

  .section-heading {
    margin-bottom: 36px;
  }

  .section-title {
    font-size: 34px;
  }

  .header__inner {
    min-height: 72px;
    grid-template-columns: 1fr auto;
    gap: 16px;
  }

  .brand {
    font-size: 19px;
  }

  .brand svg {
    width: 25px;
    height: 25px;
  }

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

  .header-actions {
    display: none;
  }

  .header-actions.is-open {
    position: fixed;
    z-index: 40;
    top: 72px;
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    align-items: stretch;
    flex-direction: column;
    gap: 28px;
    overflow-y: auto;
    padding: 32px var(--gutter);
    background: var(--bg-dark);
  }

  .header-actions.is-open .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 0;
  }

  .header-actions.is-open .nav-link {
    width: 100%;
    padding: 18px 0;
    border-bottom: 1px solid var(--divider);
    font-size: 18px;
  }

  .header-actions.is-open .btn {
    width: 100%;
  }

  .hero {
    min-height: 610px;
  }

  .hero::before {
    background: linear-gradient(
      90deg,
      rgba(13, 15, 17, 0.97) 0%,
      rgba(13, 15, 17, 0.91) 62%,
      rgba(13, 15, 17, 0.72) 100%
    );
  }

  .hero::after {
    background: linear-gradient(
      180deg,
      rgba(13, 15, 17, 0.08) 32%,
      rgba(13, 15, 17, 0.7) 76%,
      var(--bg-dark) 100%
    );
  }

  .hero__content {
    min-height: 610px;
    align-items: flex-end;
    padding-block: 56px 60px;
  }

  .hero__copy {
    width: 100%;
  }

  .hero__title {
    font-size: 42px;
  }

  .hero__description {
    font-size: 16px;
  }

  .hero__actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

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

  .stat {
    min-height: 124px;
    border-right: 0;
    border-bottom: 1px solid var(--divider);
  }

  .stat:last-child {
    border-bottom: 0;
  }

  .products-grid,
  .bento-grid,
  .oem-layout,
  .compliance-grid,
  .factory-layout,
  .blog-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .factory-images {
    grid-template-columns: minmax(0, 1fr);
  }

  .product-card--featured,
  .bento-card--wide {
    grid-column: span 1;
  }

  .product-card--featured {
    min-height: 0;
    grid-template-columns: minmax(0, 1fr);
  }

  .product-card--featured .product-card__media {
    min-height: 0;
    aspect-ratio: 16 / 10;
  }

  .product-card--featured .product-card__body,
  .product-card__body {
    padding: 24px;
  }

  .product-card--featured .product-card__title,
  .product-card__title {
    font-size: 20px;
  }

  .bento-card,
  .bento-card:nth-child(n + 3) {
    min-height: 0;
    padding: 28px;
  }

  .process-card {
    padding: 28px;
  }

  .process-item {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    padding-block: 16px;
  }

  .process-item__time {
    text-align: left;
  }

  .cert-card {
    min-height: 0;
    padding: 24px;
  }

  .cert-card__ref {
    margin-top: 24px;
    padding-top: 0;
  }

  .factory-layout {
    gap: 36px;
  }

  .factory-content__title {
    font-size: 23px;
  }

  .factory-stats {
    grid-template-columns: minmax(0, 1fr);
  }

  .final-cta {
    padding-block: 72px;
  }

  .final-cta__title {
    font-size: 38px;
  }

  .final-cta__description {
    font-size: 16px;
  }

  .final-cta__actions {
    align-items: stretch;
    flex-direction: column;
  }

  .final-cta__actions .btn {
    width: 100%;
  }

  .final-cta__inner form {
    padding: 24px !important;
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
    padding-block: 56px 48px;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-bottom__terms {
    text-align: left;
  }

  .blog-hero {
    padding-block: 64px 56px;
  }

  .post-card__body {
    padding: 24px;
  }

  .article-header {
    padding-block: 56px 36px;
  }

  .article-header__title {
    font-size: 38px;
  }

  .article-body {
    padding-bottom: 64px;
  }

  .article-content h2 {
    margin-top: 44px;
    font-size: 27px;
  }

  .article-content h3 {
    font-size: 21px;
  }

  .article-content blockquote {
    padding: 20px;
  }

  .article-media-placeholder {
    min-height: 240px;
  }

  .article-content table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .related-products {
    padding-block: 64px;
  }

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

  .related-product img {
    min-height: 0;
    aspect-ratio: 16 / 10;
  }

  .related-product__body {
    padding: 28px;
  }
}

@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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* --- Hot Product heading & linked cards --- */
.section-heading--center { text-align: center; margin-left: auto; margin-right: auto; }
.section-heading--center .kicker { justify-content: center; }
.section-title--hot {
  font-size: clamp(2.75rem, 6vw, 4rem);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
a.product-card { color: inherit; text-decoration: none; }
a.product-card:hover .product-card__title { color: var(--accent, #3DDCFF); }


/* --- Product detail image + specifications split --- */
.spec-split > * {
  min-width: 0;
}
.spec-split {
  display: grid;
  width: min(100%, var(--container));
  margin-inline: auto;
  margin-top: 56px;
  padding-inline: var(--gutter);
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1fr);
  gap: 44px;
  align-items: start;
}
.spec-h {
  margin: 0 0 16px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 700;
}
.spec-detail__frame {
  margin: 0;
  border: 1px solid var(--grey-1);
  border-radius: 16px;
  overflow: hidden;
  background: var(--bg-card-light);
}
.spec-detail__frame img {
  display: block;
  width: 100%;
  height: auto;
}
.spec-detail__switch {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}
.spec-detail__switch button {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  padding: 6px 20px;
  border: 1px solid var(--grey-1);
  border-radius: 999px;
  background: var(--bg-card-light);
  color: var(--ink-2);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
}
.spec-detail__switch button:hover {
  border-color: var(--grey-2);
}
.spec-detail__switch button.is-active {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--white);
}
@media (max-width: 980px) {
  .spec-split {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }
}

/* 窄屏下产品页 4 列卖点行折成 2 列(内联样式需 !important 覆盖) */
@media (max-width: 767px) {
  .product-detail-specs {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: 20px !important;
  }
  .product-detail-specs > div { min-width: 0; }
  /* 产品页/关于页「图 + 文」双栏内联网格，窄屏折单列（图在上） */
  .product-detail {
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 36px !important;
  }
}

/* ---------- 联系页：表单 + 信息卡双栏 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: start;
}
/* 表单内的两列行（Name/Email、Country/Market），含首页 CTA 表单 */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
/* 关于页深色数据条（4 列） */
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
@media (max-width: 767px) {
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }
  .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}
@media (max-width: 560px) {
  .form-row { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- Top bar: email / phone left, social right (scrolls away) ---------- */
.topbar {
  background: var(--bg-dark);
  border-bottom: 1px solid var(--divider);
  font-size: 12.5px;
}

.topbar__inner {
  display: flex;
  min-height: 38px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.topbar__list {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.topbar__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--grey-3);
  transition: color 180ms ease;
}

.topbar__link:hover {
  color: var(--accent);
}

.topbar__link svg {
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- Social icon buttons: solid brand-color circles (topbar + footer) ---------- */
.soc-btn {
  display: inline-flex;
  width: 32px;
  height: 32px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: #fff;
  transition: transform 180ms ease, filter 180ms ease;
}

.soc-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.soc-btn svg {
  width: 17px;
  height: 17px;
  fill: currentColor;
}

.soc-btn--facebook {
  background: #1877f2;
}

.soc-btn--youtube {
  background: #ff0000;
}

.soc-btn--linkedin {
  background: #0a66c2;
}

.soc-btn--whatsapp {
  background: #25d366;
}

.topbar__list--social {
  gap: 12px;
}

.footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.footer-social .soc-btn {
  width: 38px;
  height: 38px;
}

.footer-social .soc-btn svg {
  width: 20px;
  height: 20px;
}

/* ---------- Header: logo left / nav centered / CTA right (>=1024px) ---------- */
@media (min-width: 1024px) {
  .header__inner {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  }

  .brand {
    justify-self: start;
  }

  .header-actions {
    display: contents;
  }

  .nav {
    justify-self: center;
    justify-content: center;
    gap: clamp(30px, 3vw, 48px);
  }

}

@media (max-width: 767px) {
  .topbar__inner {
    justify-content: flex-end;
    gap: 16px;
  }

  .topbar__list--contact {
    gap: 16px;
  }

  .topbar__link span {
    display: none;
  }
}