:root {
  color-scheme: light;
  --accent: #1261a6;
  --accent-deep: #0a3f73;
  --ink: #15202b;
  --ink-soft: #344454;
  --muted: #667482;
  --line: #d7dee5;
  --line-strong: #bdc8d2;
  --surface: #fdfefe;
  --surface-soft: #f1f4f6;
  --surface-steel: #e7edf1;
  --navy: #102333;
  --radius: 6px;
  --header-height: 72px;
  --content: min(1320px, 92vw);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 22px);
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--surface);
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  line-height: 1.7;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--header-height);
  padding: 0 4vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  border-bottom: 1px solid rgb(215 222 229 / 86%);
  background: rgb(253 254 254 / 95%);
  backdrop-filter: blur(16px) saturate(130%);
}

.header-email {
  margin-left: clamp(4px, 0.7vw, 12px);
  padding-left: clamp(14px, 1.6vw, 24px);
  border-left: 1px solid var(--line-strong);
}

.header-email:hover,
.header-email:focus-visible {
  color: var(--accent);
}

.copy-toast {
  position: fixed;
  top: calc(var(--header-height) + 16px);
  right: 24px;
  z-index: 100;
  padding: 10px 16px;
  border: 1px solid rgb(169 205 232 / 65%);
  border-radius: var(--radius);
  background: var(--navy);
  color: #f4f8fb;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 12px 30px rgb(16 35 51 / 22%);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 160ms ease, transform 160ms ease;
}

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

.copy-toast.is-error {
  border-color: #d8a9a9;
  background: #713535;
}

.brand {
  min-width: max-content;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 4px;
  background: var(--accent);
  color: #f7fbff;
  font-size: 13px;
  font-weight: 800;
}

.brand-copy {
  display: grid;
  line-height: 1.1;
}

.brand-copy strong {
  font-size: 17px;
}

.brand-copy small {
  margin-top: 5px;
  color: #778491;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.13em;
}

.site-nav {
  display: flex;
  align-items: stretch;
  align-self: stretch;
  gap: clamp(14px, 1.8vw, 28px);
  overflow-x: auto;
  scrollbar-width: none;
}

.site-nav::-webkit-scrollbar {
  display: none;
}

.site-nav a {
  position: relative;
  min-width: max-content;
  display: flex;
  align-items: center;
  color: #52606d;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

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

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active {
  color: var(--accent-deep);
}

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

.hero {
  position: relative;
  min-height: min(74dvh, 780px);
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  background: var(--navy);
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  z-index: -2;
  object-fit: cover;
  object-position: center 52%;
}

.hero-shade {
  z-index: -1;
  background:
    linear-gradient(90deg, rgb(10 28 43 / 94%) 0%, rgb(10 28 43 / 78%) 38%, rgb(10 28 43 / 30%) 70%, rgb(10 28 43 / 8%) 100%),
    linear-gradient(0deg, rgb(10 28 43 / 42%), transparent 45%);
}

.hero-corner-copy {
  position: absolute;
  top: 30px;
  right: 4vw;
  z-index: 2;
  max-width: 440px;
  padding-left: 22px;
  border-left: 3px solid rgb(185 214 237 / 76%);
  color: #f1f7fb;
  text-align: right;
  text-shadow: 0 2px 12px rgb(5 18 29 / 72%);
}

.hero-corner-copy strong,
.hero-corner-copy span {
  display: block;
}

.hero-corner-copy strong {
  font-size: clamp(15px, 1.35vw, 20px);
  line-height: 1.45;
}

.hero-corner-copy span {
  margin-top: 7px;
  color: #bad7ed;
  font-size: clamp(12px, 1vw, 14px);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.hero-content {
  width: var(--content);
  margin: 0 auto;
  padding: 64px 0 92px;
  color: #f3f7fa;
}

.hero-kicker {
  margin: 0 0 14px;
  color: #b9d6ed;
  font-size: clamp(15px, 1.4vw, 19px);
  font-weight: 700;
}

.hero-content h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(48px, 7vw, 86px);
  line-height: 1.06;
  letter-spacing: 0;
}

.hero-summary {
  max-width: 620px;
  margin: 22px 0 0;
  color: #d8e3eb;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.8;
}

.hero-actions {
  margin-top: 30px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-link {
  min-width: 112px;
  min-height: 46px;
  padding: 10px 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgb(240 247 252 / 62%);
  border-radius: 4px;
  color: #f5f9fc;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.hero-link-primary,
.hero-link:hover,
.hero-link:focus-visible {
  border-color: #f5f9fc;
  background: #f5f9fc;
  color: var(--accent-deep);
}

.hero-link-primary:hover,
.hero-link-primary:focus-visible {
  border-color: #c5dcf0;
  background: #c5dcf0;
}

.hero-link:active {
  transform: translateY(1px);
}

.overview {
  position: relative;
  z-index: 2;
  width: var(--content);
  margin: -46px auto 0;
  display: grid;
  grid-template-columns: 0.72fr 0.82fr 0.82fr 2fr;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 18px 46px rgb(23 49 70 / 14%);
}

.overview div {
  min-width: 0;
  min-height: 118px;
  padding: 26px clamp(20px, 2.8vw, 38px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-left: 1px solid var(--line);
}

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

.overview strong,
.overview span {
  display: block;
}

.overview strong {
  color: var(--accent-deep);
  font-size: clamp(24px, 2.8vw, 38px);
  line-height: 1.1;
}

.overview .industry-sectors {
  font-size: clamp(18px, 1.8vw, 24px);
  line-height: 1.35;
  text-wrap: balance;
}

.overview span {
  margin-top: 9px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.about-section {
  padding: clamp(94px, 10vw, 142px) 4vw clamp(76px, 9vw, 126px);
  background: var(--surface-soft);
}

.about-inner,
.section-heading,
.gallery,
.factory-process,
.partners-panel {
  width: var(--content);
  margin-right: auto;
  margin-left: auto;
}

.section-heading {
  margin-bottom: clamp(28px, 4vw, 48px);
}

.section-heading::before {
  content: "";
  width: 48px;
  height: 4px;
  margin-bottom: 18px;
  display: block;
  background: var(--accent);
}

.section-heading h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(32px, 4.4vw, 54px);
  line-height: 1.16;
  letter-spacing: 0;
}

.section-heading p {
  max-width: 620px;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  gap: clamp(44px, 7vw, 96px);
  align-items: start;
}

.about-overview {
  position: sticky;
  top: calc(var(--header-height) + 28px);
}

.about-lead {
  color: #293847;
  font-size: clamp(16px, 1.35vw, 18px);
  font-weight: 600;
  line-height: 1.95;
}

.about-lead p {
  margin: 0 0 18px;
}

.advantages {
  margin: 34px 0 0;
  padding: 24px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 24px;
  border-top: 1px solid var(--line-strong);
}

.advantages strong {
  grid-column: 1 / -1;
  margin-bottom: 4px;
  color: var(--accent-deep);
  font-size: 18px;
}

.advantages span {
  position: relative;
  padding-left: 14px;
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 700;
}

.advantages span::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 7px;
  height: 2px;
  background: var(--accent);
}

.capability-list {
  display: grid;
}

.capability-block {
  padding: 0 0 28px 28px;
  border-left: 2px solid var(--line-strong);
}

.capability-block + .capability-block {
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.capability-block h3 {
  margin: 0 0 10px;
  color: var(--accent-deep);
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.3;
}

.capability-block p {
  margin: 0;
  color: #3e4c59;
  font-size: clamp(15px, 1.18vw, 17px);
  font-weight: 500;
  line-height: 1.9;
}

.quality-details {
  margin-top: 20px;
  display: grid;
  gap: 16px;
}

.quality-details > div {
  padding: 16px 18px;
  border-left: 3px solid var(--accent);
  background: rgb(255 255 255 / 70%);
}

.quality-details h4 {
  margin: 0 0 6px;
  color: var(--accent-deep);
  font-size: 16px;
  line-height: 1.4;
}

.service-details {
  display: grid;
  gap: 18px;
}

.service-details section {
  padding-left: 18px;
  border-left: 3px solid var(--accent);
}

.service-details h4 {
  margin: 0 0 5px;
  color: var(--accent-deep);
  font-size: 16px;
}

.home-process,
.home-factory,
.history-section {
  padding: clamp(76px, 9vw, 128px) 4vw;
}

.home-process {
  background: var(--surface);
}

.home-factory {
  background: var(--surface-soft);
}

.process-heading {
  display: grid;
  grid-template-columns: minmax(220px, 0.72fr) minmax(0, 1.28fr);
  column-gap: clamp(36px, 7vw, 96px);
  align-items: start;
}

.process-heading::before {
  grid-column: 1 / -1;
}

.process-advantage {
  padding-left: 20px;
  border-left: 3px solid var(--accent);
}

.process-advantage strong {
  display: block;
  color: var(--accent-deep);
  font-size: 19px;
}

.process-advantage strong::before {
  content: "√";
  margin-right: 8px;
  color: var(--accent);
}

.process-advantage p {
  max-width: none;
  margin-top: 7px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.history-section {
  padding-top: 44px;
  padding-bottom: 50px;
  background: var(--surface);
}

.history-inner {
  width: var(--content);
  margin: 0 auto;
}

.history-inner h2 {
  margin: 0 0 34px;
  color: var(--ink);
  font-size: clamp(24px, 2.6vw, 34px);
  line-height: 1.2;
}

.history-route {
  width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.history-route:focus-visible {
  outline: 2px solid rgb(18 97 166 / 45%);
  outline-offset: 6px;
}

.history-timeline {
  width: 100%;
  min-width: 900px;
  height: auto;
  display: block;
}

.history-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
}

.history-dot-stroke {
  fill: var(--surface);
  stroke: var(--accent);
  stroke-width: 2;
}

.history-dot-fill {
  fill: var(--accent);
}

.history-year,
.history-tag-text {
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-weight: 700;
  text-anchor: middle;
}

.history-year {
  fill: var(--accent-deep);
  font-size: 22px;
}

.history-tag {
  fill: var(--accent-deep);
}

.history-tag-text {
  fill: #fff;
  font-size: 20px;
}

.gallery-section {
  padding: clamp(76px, 9vw, 128px) 4vw;
}

.section-tint {
  background: var(--surface-soft);
}

.winding-lead {
  width: var(--content);
  margin: 0 auto clamp(40px, 6vw, 72px);
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.7fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
}

.winding-machine {
  width: 100%;
}

.winding-machine .image-button img {
  object-fit: cover;
}

.winding-copy {
  padding: clamp(26px, 4vw, 48px);
  border-left: 4px solid var(--accent);
  background: var(--surface-soft);
}

.winding-copy strong {
  display: block;
  color: var(--accent-deep);
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.35;
}

.winding-copy p {
  margin: 16px 0 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.specs-grid {
  width: var(--content);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  align-items: start;
}

.spec-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 8px 22px rgb(23 49 70 / 6%);
}

.spec-card.spec-wide {
  grid-column: 1 / -1;
}

.spec-card h3 {
  margin: 0;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--navy);
  color: #eef5fa;
  font-size: 19px;
  line-height: 1.35;
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-color: var(--line-strong) var(--surface-soft);
}

.spec-card table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  color: #2d3b48;
  font-size: 14px;
  line-height: 1.55;
}

.spec-card.spec-wide table {
  min-width: 680px;
}

.spec-card th,
.spec-card td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
}

.spec-card thead th {
  background: var(--surface-steel);
  color: var(--accent-deep);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.spec-card tbody tr + tr {
  border-top: 1px solid #e7ebef;
}

.spec-card tbody tr:nth-child(even) {
  background: #f8fafb;
}

.spec-card tbody th {
  width: 28%;
  color: #263745;
  font-weight: 700;
}

.spec-card td:last-child,
.spec-card thead th:last-child {
  width: 78px;
  white-space: nowrap;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
  align-items: start;
}

.gallery-item {
  grid-column: span 4;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 8px 22px rgb(23 49 70 / 7%);
}

.gallery-item-featured {
  grid-column: span 8;
  grid-row: span 2;
}

.gallery-two .gallery-item {
  grid-column: span 6;
}

.gallery-inspection .gallery-item:nth-child(2) {
  grid-column: span 4;
}

.gallery-welding .gallery-item:nth-child(-n+2) {
  grid-column: span 6;
}

.gallery-welding .gallery-item:last-child {
  grid-column: 5 / span 4;
}

.image-button {
  width: 100%;
  aspect-ratio: 4 / 3;
  padding: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: #f5f7f8;
  cursor: zoom-in;
}

.image-button img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-item-featured .image-button img,
.gallery-welding .gallery-item:nth-child(-n+2) .image-button img {
  object-fit: cover;
}

.image-button:hover img {
  transform: scale(1.02);
}

.image-button:focus-visible {
  outline: 3px solid rgb(18 97 166 / 44%);
  outline-offset: -3px;
}

figcaption {
  padding: 14px 16px 15px;
  color: #2b3946;
  font-size: 14px;
  font-weight: 700;
}

.factory-process {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(300px, 0.65fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
}

.factory-process .gallery-item {
  width: 100%;
}

.factory-statement {
  padding: clamp(28px, 4vw, 52px);
  border-left: 4px solid var(--accent);
  background: var(--navy);
  color: #eef5fa;
}

.factory-statement strong {
  display: block;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.35;
}

.factory-statement p {
  margin: 16px 0 0;
  color: #bfd0dd;
  font-size: 16px;
}

.process-flow {
  width: var(--content);
  margin: 0 auto;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  list-style: none;
  box-shadow: 0 10px 28px rgb(23 49 70 / 7%);
}

.process-flow li {
  min-width: 0;
  padding: clamp(24px, 3vw, 38px);
  border-left: 1px solid var(--line);
}

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

.process-number {
  color: var(--accent);
  font-size: 14px;
  font-weight: 800;
}

.process-flow h3 {
  margin: 18px 0 10px;
  color: var(--accent-deep);
  font-size: clamp(21px, 2.2vw, 28px);
  line-height: 1.3;
}

.process-flow p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.partners-panel {
  margin-top: clamp(44px, 6vw, 78px);
  padding-top: clamp(42px, 6vw, 70px);
  display: grid;
  grid-template-columns: minmax(340px, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(34px, 6vw, 80px);
  align-items: center;
  border-top: 1px solid var(--line-strong);
}

.partners-logo-board {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 10px 28px rgb(23 49 70 / 8%);
}

.partners-logo-board img {
  width: 100%;
  height: auto;
  display: block;
}

.partners-content h3 {
  margin: 0 0 22px;
  color: var(--ink);
  font-size: clamp(28px, 3.5vw, 44px);
  line-height: 1.2;
}

.partner-names {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0 20px;
  list-style: none;
}

.partner-names li {
  min-width: 0;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  color: #354452;
  font-size: 14px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.site-footer {
  padding: 40px 4vw;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  background: var(--navy);
  color: #eef5fa;
}

.site-footer span {
  color: #aebfcd;
}

.lightbox {
  width: min(94vw, 1540px);
  max-width: none;
  height: min(92dvh, 1040px);
  max-height: none;
  padding: 54px 72px 22px;
  border: 0;
  border-radius: var(--radius);
  background: #101a24;
  color: #f2f6f9;
}

.lightbox::backdrop {
  background: rgb(4 10 16 / 86%);
}

.lightbox-image {
  width: 100%;
  height: calc(100% - 42px);
  display: block;
  object-fit: contain;
}

.lightbox-caption {
  margin: 10px 0 0;
  text-align: center;
  font-weight: 600;
}

.lightbox-close,
.lightbox-nav {
  position: absolute;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: rgb(255 255 255 / 8%);
  color: #f2f6f9;
  cursor: pointer;
}

.lightbox-close {
  top: 10px;
  right: 12px;
  width: 38px;
  height: 38px;
  font-size: 28px;
  line-height: 1;
}

.lightbox-nav {
  top: 50%;
  width: 44px;
  height: 64px;
  font-size: 36px;
  line-height: 1;
  transform: translateY(-50%);
}

.lightbox-prev {
  left: 12px;
}

.lightbox-next {
  right: 12px;
}

.lightbox-close:hover,
.lightbox-close:focus-visible,
.lightbox-nav:hover,
.lightbox-nav:focus-visible {
  background: rgb(255 255 255 / 18%);
  outline: 2px solid rgb(255 255 255 / 52%);
}

@media (max-width: 1080px) {
  .site-header {
    align-items: stretch;
    height: auto;
    min-height: var(--header-height);
    flex-direction: column;
    gap: 0;
    padding-top: 10px;
  }

  .brand {
    min-height: 48px;
  }

  .site-nav {
    min-height: 46px;
  }

  .site-nav a {
    padding: 10px 0 12px;
  }

  .about-layout,
  .factory-process,
  .partners-panel,
  .winding-lead {
    grid-template-columns: 1fr;
  }

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

  .spec-card.spec-wide {
    grid-column: auto;
  }

  .about-overview {
    position: static;
  }

  .gallery-item,
  .gallery-item-featured,
  .gallery-two .gallery-item,
  .gallery-inspection .gallery-item:nth-child(2),
  .gallery-welding .gallery-item:nth-child(-n+2),
  .gallery-welding .gallery-item:last-child {
    grid-column: span 6;
    grid-row: auto;
  }

  .partners-logo-board {
    width: min(720px, 100%);
  }

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

  .process-flow li:nth-child(odd) {
    border-left: 0;
  }

  .process-flow li:nth-child(n+3) {
    border-top: 1px solid var(--line);
  }

}

@media (max-width: 720px) {
  :root {
    --header-height: 112px;
    --content: min(100% - 32px, 1320px);
  }

  .site-header {
    padding-right: 16px;
    padding-left: 16px;
  }

  .hero {
    min-height: 68dvh;
    align-items: flex-end;
  }

  .hero-image {
    object-position: 56% center;
  }

  .hero-shade {
    background: linear-gradient(0deg, rgb(10 28 43 / 95%) 0%, rgb(10 28 43 / 66%) 56%, rgb(10 28 43 / 18%) 100%);
  }

  .hero-content {
    padding: 58px 0 76px;
  }

  .hero-corner-copy {
    top: 18px;
    right: 16px;
    max-width: 250px;
    padding-left: 12px;
  }

  .hero-corner-copy strong {
    font-size: 12px;
  }

  .hero-corner-copy span {
    margin-top: 4px;
    font-size: 10px;
  }

  .hero-content h1 {
    font-size: clamp(44px, 14vw, 62px);
  }

  .hero-summary {
    max-width: 35ch;
    font-size: 16px;
  }

  .overview {
    margin-top: -28px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .overview div {
    min-height: 102px;
    padding: 20px 18px;
  }

  .overview div:nth-child(3) {
    border-left: 0;
  }

  .overview div:nth-child(n+3) {
    border-top: 1px solid var(--line);
  }

  .overview strong {
    font-size: clamp(23px, 7.5vw, 31px);
  }

  .overview .industry-sectors {
    font-size: clamp(16px, 4.8vw, 20px);
    white-space: normal;
  }

  .about-section,
  .gallery-section,
  .home-process,
  .home-factory,
  .history-section {
    padding-right: 16px;
    padding-left: 16px;
  }

  .process-heading {
    grid-template-columns: 1fr;
  }

  .process-advantage {
    margin-top: 20px;
  }

  .history-section {
    padding-top: 34px;
    padding-bottom: 38px;
  }

  .history-inner {
    width: 100%;
  }

  .history-inner h2 {
    margin-bottom: 26px;
    font-size: 25px;
  }

  .history-timeline {
    min-width: 820px;
  }

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

  .capability-block {
    padding-left: 20px;
  }

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

  .specs-grid {
    gap: 14px;
  }

  .spec-card h3 {
    padding: 15px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-size: 17px;
  }

  .spec-card h3::after {
    content: "左右滑动查看";
    flex: none;
    color: #aec4d5;
    font-size: 11px;
    font-weight: 500;
  }

  .spec-card th,
  .spec-card td {
    padding: 10px 12px;
  }

  .gallery-item,
  .gallery-item-featured,
  .gallery-two .gallery-item,
  .gallery-inspection .gallery-item:nth-child(2),
  .gallery-welding .gallery-item:nth-child(-n+2),
  .gallery-welding .gallery-item:last-child {
    grid-column: auto;
  }

  .factory-statement {
    padding: 26px 22px;
  }

  .partners-logo-board {
    padding: 8px;
  }

  .partner-names {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 14px;
  }

  .process-flow {
    grid-template-columns: 1fr;
  }

  .process-flow li,
  .process-flow li:nth-child(odd) {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

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

  .site-footer {
    flex-direction: column;
    gap: 4px;
  }

  .lightbox {
    width: 100vw;
    height: 100dvh;
    margin: 0;
    padding: 52px 48px 20px;
    border-radius: 0;
  }

  .lightbox-nav {
    width: 38px;
    height: 58px;
  }

  .lightbox-prev {
    left: 5px;
  }

  .lightbox-next {
    right: 5px;
  }
}

/* Page-specific image sizing keeps technical text readable without CSS zoom. */
body[data-page="home"],
body[data-page="winding"] {
  --content: min(990px, 92vw);
}

body[data-page="winding"] .specs-grid {
  grid-template-columns: 1fr;
}

body[data-page="winding"] .spec-card,
body[data-page="winding"] .spec-card.spec-wide {
  grid-column: 1 / -1;
}

body[data-page="assembly"] .gallery-two .gallery-item {
  grid-column: 1 / -1;
  width: min(100%, 920px);
  margin-right: auto;
  margin-left: auto;
}

body[data-page="assembly"] .gallery-two .gallery-item:first-child {
  width: min(100%, 680px);
}

body[data-page="assembly"] .gallery-two .gallery-item:first-child .image-button {
  aspect-ratio: 798 / 789;
}

body[data-page="assembly"] .gallery-two .gallery-item:nth-child(2) .image-button {
  aspect-ratio: 1314 / 1116;
}

body[data-page="inspection"] .gallery-inspection .gallery-item:first-child,
body[data-page="inspection"] .gallery-inspection .gallery-item:nth-child(2) {
  grid-column: 1 / -1;
  grid-row: auto;
  margin-right: auto;
  margin-left: auto;
}

body[data-page="inspection"] .gallery-inspection .gallery-item:first-child {
  width: min(100%, 720px);
}

body[data-page="inspection"] .gallery-inspection .gallery-item:nth-child(2) {
  width: 100%;
}

body[data-page="inspection"] .gallery-inspection .gallery-item:nth-child(2) .image-button {
  aspect-ratio: 2325 / 1275;
}

body[data-page="welding"] .gallery-welding .gallery-item:last-child {
  grid-column: 1 / -1;
  width: min(100%, 760px);
  margin-right: auto;
  margin-left: auto;
}

body[data-page="welding"] .gallery-welding .gallery-item:last-child .image-button {
  aspect-ratio: 915 / 1074;
}

body[data-page="factory"] .factory-process {
  grid-template-columns: 1fr;
}

body[data-page="factory"] .factory-process .gallery-item {
  width: min(100%, 860px);
  margin-right: auto;
  margin-left: auto;
}

body[data-page="factory"] .factory-process .image-button {
  aspect-ratio: 705 / 660;
}

body[data-page="factory"] .factory-statement {
  width: min(100%, 860px);
  margin: 0 auto;
}

.partner-names a {
  display: block;
  color: inherit;
  text-decoration: none;
  transition: color 160ms ease, transform 160ms ease;
}

.partner-names a::after {
  content: " ↗";
  color: var(--accent);
  font-weight: 800;
}

.partner-names a:hover,
.partner-names a:focus-visible {
  color: var(--accent-deep);
  transform: translateX(2px);
  outline: none;
}

@media (min-width: 721px) {
  body[data-page="home"] .hero {
    min-height: min(56dvh, 585px);
  }

  body[data-page="home"] .hero-content {
    padding: 46px 0 66px;
  }

  body[data-page="home"] .hero-content h1 {
    font-size: clamp(40px, 5.2vw, 64px);
  }

  body[data-page="home"] .hero-kicker {
    font-size: clamp(13px, 1.1vw, 16px);
  }

  body[data-page="home"] .hero-summary {
    max-width: 520px;
    margin-top: 16px;
    font-size: clamp(14px, 1.15vw, 16px);
  }

  body[data-page="home"] .hero-actions {
    margin-top: 22px;
  }

  body[data-page="home"] .overview {
    margin-top: -34px;
  }

  body[data-page="home"] .overview div {
    min-height: 88px;
    padding: 18px 24px;
  }

  body[data-page="home"] .overview strong {
    font-size: clamp(21px, 2.1vw, 29px);
  }

  body[data-page="home"] .overview .industry-sectors {
    font-size: clamp(16px, 1.3vw, 18px);
    white-space: nowrap;
  }

  body[data-page="home"] .overview span {
    margin-top: 6px;
    font-size: 11px;
  }

  body[data-page="home"] .about-section {
    padding-top: 76px;
    padding-bottom: 78px;
  }

  body[data-page="home"] .section-heading h2,
  body[data-page="winding"] .section-heading h2 {
    font-size: clamp(28px, 3.3vw, 41px);
  }

  body[data-page="home"] .section-heading,
  body[data-page="winding"] .section-heading {
    margin-bottom: 30px;
  }

  body[data-page="home"] .about-layout {
    gap: 52px;
  }

  body[data-page="home"] .about-lead,
  body[data-page="home"] .capability-block p {
    font-size: 14px;
  }

  body[data-page="home"] .capability-block h3 {
    font-size: 22px;
  }

  body[data-page="winding"] .gallery-section {
    padding-top: 58px;
    padding-bottom: 76px;
  }

  body[data-page="winding"] .winding-lead {
    margin-bottom: 46px;
    gap: 32px;
  }

  body[data-page="winding"] .winding-copy {
    padding: 28px;
  }

  body[data-page="winding"] .winding-copy strong {
    font-size: 26px;
  }

  body[data-page="winding"] .winding-copy p,
  body[data-page="winding"] .spec-card table {
    font-size: 13px;
  }

  body[data-page="winding"] .spec-card h3 {
    padding: 14px 16px;
    font-size: 16px;
  }

  body[data-page="winding"] .spec-card th,
  body[data-page="winding"] .spec-card td {
    padding: 9px 12px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}