:root {
  --navy: #12304a;
  --navy-deep: #0a2032;
  --blue: #1f6f9f;
  --blue-light: #dceaf2;
  --steel: #5e7180;
  --ink: #1c2933;
  --muted: #64727d;
  --line: #d8e0e5;
  --surface: #f3f6f8;
  --white: #ffffff;
  --content: 1180px;
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--white);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--header-height);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(10, 32, 50, 0.96);
  color: var(--white);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 28px;
}

.brand {
  display: flex;
  min-width: 240px;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: var(--white);
  font-size: 17px;
  font-weight: 700;
}

.brand-name {
  display: block;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.25;
}

.brand-sub {
  display: block;
  margin-top: 2px;
  color: #9fb5c4;
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.main-nav a {
  position: relative;
  padding: 26px 0 23px;
  color: #d5e0e7;
  font-size: 14px;
  font-weight: 700;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 3px;
  background: #55a5d1;
  content: "";
  opacity: 0;
  transform: scaleX(0.4);
  transition: 180ms ease;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--white);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  opacity: 1;
  transform: scaleX(1);
}

.language-switcher {
  display: flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}

.language-switcher button {
  padding: 6px 0;
  border: 0;
  background: transparent;
  color: #9fb5c4;
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  transition: color 180ms ease;
}

.language-switcher button:hover,
.language-switcher button.active {
  color: var(--white);
}

.language-switcher span {
  color: rgba(255, 255, 255, 0.28);
  font-size: 11px;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px auto;
  background: var(--white);
  transition: 180ms ease;
}

.hero {
  position: relative;
  min-height: 650px;
  overflow: hidden;
  background: var(--navy-deep);
  color: var(--white);
}

.hero::before {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5, 23, 36, 0.94) 0%, rgba(5, 23, 36, 0.78) 38%, rgba(5, 23, 36, 0.18) 72%, rgba(5, 23, 36, 0.08) 100%),
    var(--localized-image, url("../images/pengsu-factory-hero.jpg")) center / cover no-repeat;
  content: "";
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 90px;
  background: linear-gradient(180deg, transparent, rgba(8, 28, 43, 0.38));
  content: "";
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 650px;
  align-items: center;
  padding: 80px 0 105px;
}

.hero-content {
  max-width: 680px;
}

.eyebrow {
  display: flex;
  align-items: center;
  margin: 0 0 18px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  line-height: 1.4;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 34px;
  height: 2px;
  margin-right: 12px;
  background: currentColor;
  content: "";
}

.hero .eyebrow {
  color: #72b9df;
}

.hero h1 {
  max-width: 660px;
  margin: 0;
  font-size: clamp(40px, 5.6vw, 72px);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.06;
}

.hero-copy {
  max-width: 620px;
  margin: 24px 0 0;
  color: #d3dee5;
  font-size: 18px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 22px;
  border: 1px solid var(--blue);
  border-radius: 2px;
  background: var(--blue);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition: 180ms ease;
}

.button:hover {
  border-color: #2d83b6;
  background: #2d83b6;
  transform: translateY(-1px);
}

.button-outline {
  border-color: rgba(255, 255, 255, 0.5);
  background: transparent;
}

.button-outline:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.button-light {
  border-color: var(--white);
  background: var(--white);
  color: var(--navy);
}

.button-light:hover {
  border-color: #e7eef2;
  background: #e7eef2;
}

.hero-stats {
  position: relative;
  z-index: 2;
  margin-top: -72px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 4px solid var(--blue);
  box-shadow: 0 18px 42px rgba(13, 36, 52, 0.14);
}

.stat {
  min-height: 144px;
  padding: 28px 30px;
  border-right: 1px solid var(--line);
  background: var(--white);
}

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

.stat strong {
  display: block;
  color: var(--navy);
  font-size: 31px;
  line-height: 1.2;
}

.stat span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.45;
  text-transform: uppercase;
}

.section {
  padding: 100px 0;
}

.section-compact {
  padding: 76px 0;
}

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

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

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 42px;
}

.section-head h2,
.split-copy h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(30px, 3vw, 44px);
  line-height: 1.2;
}

.section-head p {
  max-width: 590px;
  margin: 0;
  color: var(--muted);
}

.section-dark .section-head h2,
.section-dark .split-copy h2 {
  color: var(--white);
}

.section-dark .section-head p,
.section-dark .split-copy p {
  color: #b9c9d3;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(0, 0.97fr);
  align-items: center;
  gap: 72px;
}

.split-reverse .split-copy {
  order: 2;
}

.split-copy p {
  margin: 20px 0 0;
  color: var(--muted);
}

.split-copy .button {
  margin-top: 28px;
}

.media-frame {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  border: 1px solid #c9d5dc;
  background:
    linear-gradient(rgba(18, 48, 74, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 48, 74, 0.06) 1px, transparent 1px),
    linear-gradient(145deg, #e8eef2, #cddbe3);
  background-size: 30px 30px, 30px 30px, auto;
}

.media-frame[style*="--localized-image"] {
  background: var(--localized-image) center / cover no-repeat;
}

.media-frame::before,
.media-frame::after {
  position: absolute;
  border: 1px solid rgba(18, 48, 74, 0.16);
  content: "";
}

.media-frame::before {
  inset: 42px;
}

.media-frame::after {
  inset: 74px;
}

.map-embed {
  position: relative;
  height: 480px;
  overflow: hidden;
  border: 1px solid #c9d5dc;
  background: #e8eef2;
}

.map-embed iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.map-external-link {
  position: absolute;
  z-index: 2;
  right: 24px;
  bottom: 24px;
  padding: 13px 17px;
  border-left: 3px solid var(--blue);
  background: rgba(255, 255, 255, 0.94);
  color: var(--navy);
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(10, 32, 50, 0.14);
}

.media-label {
  position: absolute;
  z-index: 1;
  right: 28px;
  bottom: 28px;
  left: 28px;
  padding: 17px 19px;
  border-left: 4px solid var(--blue);
  background: rgba(255, 255, 255, 0.92);
  color: var(--navy);
  font-size: 14px;
  font-weight: 700;
}

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

.product-card {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--white);
  transition: 220ms ease;
}

.product-card:hover {
  border-color: #aebfca;
  box-shadow: 0 18px 40px rgba(22, 49, 66, 0.11);
  transform: translateY(-4px);
}

.product-visual {
  position: relative;
  height: 240px;
  overflow: hidden;
  background: #dfe7ec;
}

.product-photo[style*="--localized-image"] {
  background-color: #050606;
  background-image: var(--localized-image);
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}

.product-visual.product-photo::before,
.product-visual.product-photo::after {
  display: none;
}

.product-visual.product-photo .product-number {
  color: rgba(255, 255, 255, 0.72);
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.45);
}

.product-visual::before,
.product-visual::after {
  position: absolute;
  width: 74%;
  height: 32%;
  border: 1px solid #bdcbd4;
  background: #fbfcfd;
  box-shadow: 0 12px 20px rgba(30, 52, 67, 0.14);
  content: "";
  transform: skewY(-7deg);
}

.product-visual::before {
  top: 63px;
  left: 13%;
}

.product-visual::after {
  top: 100px;
  left: 20%;
  background: #f2f5f6;
}

.product-visual.black-core::after {
  border-color: #1c252b;
  background: #26343d;
}

.product-visual.coextruded::before {
  border-bottom: 8px solid #edf2f4;
}

.product-number {
  position: absolute;
  z-index: 2;
  top: 16px;
  left: 18px;
  color: rgba(18, 48, 74, 0.27);
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
}

.product-body {
  padding: 27px 27px 30px;
}

.product-body h3 {
  margin: 0;
  color: var(--navy);
  font-size: 21px;
  line-height: 1.35;
}

.product-body p {
  display: -webkit-box;
  min-height: 82px;
  margin: 14px 0 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 14px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 20px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

.text-link::after {
  content: "→";
  transition: 180ms ease;
}

.text-link:hover::after {
  transform: translateX(4px);
}

.market-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr 0.9fr;
  gap: 1px;
  background: rgba(255, 255, 255, 0.12);
}

.market-section {
  padding: 44px 0;
}

.market-section .section-head {
  margin-bottom: 19px;
}

.market-section .market-item {
  min-height: 150px;
  padding: 18px 26px;
}

.market-section .market-item h3 {
  margin-top: 18px;
}

.market-item {
  min-height: 290px;
  padding: 38px;
  background: #102b41;
}

.market-item:first-child {
  background: var(--blue);
}

.market-item .index {
  display: block;
  color: rgba(255, 255, 255, 0.46);
  font-size: 12px;
  font-weight: 700;
}

.market-item h3 {
  margin: 84px 0 0;
  font-size: 27px;
  line-height: 1.25;
}

.market-item p {
  margin: 14px 0 0;
  color: #bbccd6;
  font-size: 14px;
}

.market-item:first-child p {
  color: #e1f0f7;
}

.cta-band {
  padding: 54px 0;
  background: var(--blue);
  color: var(--white);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.cta-inner h2 {
  margin: 0;
  font-size: clamp(27px, 3vw, 38px);
  line-height: 1.25;
}

.cta-inner p {
  margin: 8px 0 0;
  color: #ddecf4;
}

.page-hero {
  position: relative;
  min-height: 380px;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(7, 28, 43, 0.97), rgba(15, 53, 78, 0.86)),
    url("../images/pengsu-factory-hero.jpg") center 46% / cover no-repeat;
  color: var(--white);
}

.page-hero::after {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  content: "";
}

.page-hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 380px;
  align-items: end;
  padding: 80px 0 70px;
}

.page-hero h1 {
  margin: 0;
  font-size: clamp(42px, 5vw, 64px);
  line-height: 1.08;
}

.page-hero p {
  max-width: 690px;
  margin: 18px 0 0;
  color: #cfdee7;
  font-size: 18px;
}

.breadcrumb {
  margin-bottom: 17px;
  color: #80bddf;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.content-copy p {
  margin: 0 0 22px;
  color: var(--muted);
}

.strength-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 38px;
}

.strength-shell {
  width: min(calc(100% - 80px), 1040px);
}

.strength-item {
  min-height: 142px;
  padding: 23px 22px;
  border-top: 2px solid var(--blue);
  background: var(--surface);
}

.strength-item > strong {
  display: block;
  color: var(--navy);
  font-size: 27px;
}

.strength-item > span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.product-detail {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 54px;
  padding: 54px 0;
  border-bottom: 1px solid var(--line);
}

.product-detail:last-child {
  border-bottom: 0;
}

.product-detail:nth-child(even) .product-detail-visual {
  order: 2;
}

.product-detail-visual {
  min-height: 360px;
}

.product-detail-copy {
  align-self: center;
}

.product-detail-copy .product-index {
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

.product-detail-copy h2 {
  margin: 8px 0 20px;
  color: var(--navy);
  font-size: clamp(28px, 3vw, 39px);
  line-height: 1.22;
}

.product-detail-copy p {
  margin: 0;
  color: var(--muted);
}

.product-detail-link {
  color: inherit;
  text-decoration: none;
  transition: background-color 180ms ease, box-shadow 180ms ease;
}

.product-detail-link:hover,
.product-detail-link:focus-visible {
  background: #f7fafc;
  box-shadow: 0 0 0 1px var(--blue);
  outline: 0;
}

.product-detail-link .product-detail-copy::after {
  display: block;
  margin-top: 22px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  content: "→";
}

.detail-overview {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

.detail-product-image {
  min-height: 500px;
}

.detail-summary h1 {
  margin: 8px 0 18px;
  color: var(--navy);
  font-size: clamp(31px, 4vw, 48px);
  line-height: 1.15;
}

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

.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.spec-item {
  min-height: 142px;
  padding: 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.spec-item dt {
  margin-bottom: 10px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.spec-item dd {
  margin: 0;
  color: var(--navy);
  font-weight: 700;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 30px;
  padding: 1px;
  background: var(--line);
  list-style: none;
}

.process-list li {
  min-height: 150px;
  background: var(--white);
}

.process-step-image {
  aspect-ratio: 16 / 9;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.process-step-image-1 { background-image: url("../images/process-01-raw-material.jpg"); }
.process-step-image-2 { background-image: url("../images/process-02-mixing.jpg"); }
.process-step-image-3 { background-image: url("../images/process-03-extrusion.jpg"); }
.process-step-image-4 { background-image: url("../images/process-04-cooling.jpg"); }
.process-step-image-5 { background-image: url("../images/process-05-cutting.jpg"); }
.process-step-image-6 { background-image: url("../images/process-06-surface.jpg"); }
.process-step-image-7 { background-image: url("../images/process-07-inspection.jpg"); }
.process-step-image-8 { background-image: url("../images/process-08-packaging.jpg"); }

.process-step-copy {
  padding: 22px 24px 25px;
}

.process-step-copy span {
  display: block;
  margin-bottom: 9px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
}

.process-step-copy strong {
  color: var(--navy);
  font-size: 15px;
}

.process-note {
  margin-top: 22px;
  color: var(--muted);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.case-card {
  border: 1px solid var(--line);
  background: var(--white);
}

.case-card .media-frame {
  min-height: 330px;
  border: 0;
  border-bottom: 1px solid var(--line);
}

.media-frame.case-image-contain[style*="--localized-image"] {
  background-color: #f4f5f2;
  background-size: cover;
}

.case-copy {
  padding: 28px 30px 31px;
}

.case-copy h2 {
  margin: 0;
  color: var(--navy);
  font-size: 24px;
}

.case-copy p {
  margin: 10px 0 0;
  color: var(--muted);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 64px;
}

.contact-panel {
  padding: 38px;
  background: var(--navy-deep);
  color: var(--white);
}

.contact-panel h2,
.form-panel h2 {
  margin: 0 0 28px;
  font-size: 30px;
  line-height: 1.25;
}

.contact-list {
  display: grid;
  gap: 0;
}

.contact-item {
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.13);
}

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

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

.contact-item span {
  display: block;
  color: #7fb7d5;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.contact-item a,
.contact-item address {
  display: block;
  margin-top: 5px;
  color: #e7eff3;
  font-size: 15px;
  font-style: normal;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.field {
  display: grid;
  gap: 7px;
}

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

.field label {
  color: var(--navy);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid #cbd6dc;
  border-radius: 0;
  outline: 0;
  background: var(--surface);
  color: var(--ink);
  transition: 180ms ease;
}

.field input {
  height: 50px;
  padding: 0 14px;
}

.field textarea {
  min-height: 150px;
  padding: 13px 14px;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--blue);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(31, 111, 159, 0.09);
}

.form-status {
  min-height: 24px;
  margin: 14px 0 0;
  color: var(--blue);
  font-size: 13px;
}

.form-panel .button {
  margin-top: 5px;
}

.site-footer {
  padding: 66px 0 24px;
  background: #071a28;
  color: #c7d3da;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.65fr 0.95fr;
  gap: 60px;
}

.footer-brand {
  max-width: 430px;
}

.footer-brand h2 {
  margin: 0;
  color: var(--white);
  font-size: 21px;
  line-height: 1.35;
}

.footer-brand p {
  margin: 17px 0 0;
  color: #899eaa;
  font-size: 14px;
}

.footer-title {
  margin: 0 0 17px;
  color: var(--white);
  font-size: 13px;
  text-transform: uppercase;
}

.footer-links {
  display: grid;
  gap: 9px;
}

.footer-links a,
.footer-contact a,
.footer-contact address {
  color: #9db0bb;
  font-size: 14px;
  font-style: normal;
}

.footer-links a:hover,
.footer-contact a:hover {
  color: var(--white);
}

.footer-contact {
  display: grid;
  gap: 9px;
}

.copyright {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #718894;
  font-size: 12px;
}

.whatsapp {
  position: fixed;
  z-index: 90;
  right: 22px;
  bottom: 22px;
  display: flex;
  width: 58px;
  height: 58px;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--white);
  border-radius: 50%;
  background: #24a866;
  color: var(--white);
  box-shadow: 0 10px 26px rgba(5, 28, 19, 0.26);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  transition: 180ms ease;
}

.whatsapp:hover {
  background: #188d53;
  transform: translateY(-3px);
}

@media (max-width: 960px) {
  .site-header {
    background: var(--navy-deep);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .main-nav {
    position: fixed;
    z-index: 99;
    top: var(--header-height);
    right: 0;
    bottom: auto;
    width: 100vw;
    height: calc(100vh - var(--header-height));
    height: calc(100dvh - var(--header-height));
    padding: 24px max(24px, env(safe-area-inset-right)) calc(24px + env(safe-area-inset-bottom)) max(24px, env(safe-area-inset-left));
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    background: var(--navy-deep);
    box-shadow: none;
    overflow-y: auto;
    overscroll-behavior: contain;
    transform: translateX(105%);
    transition: 220ms ease;
  }

  .menu-open .main-nav {
    transform: translateX(0);
  }

  .main-nav a {
    padding: 15px 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 16px;
  }

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

  .language-switcher {
    margin-top: 14px;
    padding: 10px 4px;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .language-switcher button {
    min-height: 34px;
    font-size: 13px;
  }

  .menu-toggle {
    display: block;
  }

  .menu-open .menu-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-open .menu-toggle span:nth-child(2) {
    opacity: 0;
  }

  .menu-open .menu-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .hero,
  .hero-inner {
    min-height: 620px;
  }

  .hero::before {
    background:
      linear-gradient(90deg, rgba(5, 23, 36, 0.94), rgba(5, 23, 36, 0.58)),
      var(--localized-image, url("../images/pengsu-factory-hero.jpg")) 61% center / cover no-repeat;
  }

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

  .stat:nth-child(2) {
    border-right: 0;
  }

  .stat:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .split,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .split-reverse .split-copy {
    order: initial;
  }

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

  .product-card:last-child {
    grid-column: 1 / -1;
  }

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

  .market-item {
    min-height: 230px;
  }

  .market-item h3 {
    margin-top: 48px;
  }

  .product-detail {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .product-detail:nth-child(even) .product-detail-visual {
    order: initial;
  }

  .detail-overview {
    grid-template-columns: 1fr;
  }

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

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

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

@media (max-width: 680px) {
  :root {
    --header-height: 68px;
  }

  .container {
    width: min(calc(100% - 30px), var(--content));
  }

  .brand {
    min-width: 0;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    flex-basis: 38px;
  }

  .brand-name {
    max-width: 205px;
    font-size: 12px;
  }

  .brand-sub {
    display: none;
  }

  .hero,
  .hero-inner {
    min-height: 600px;
  }

  .hero-inner {
    align-items: end;
    padding: 110px 0 112px;
  }

  .hero::before {
    background:
      linear-gradient(180deg, rgba(5, 23, 36, 0.2), rgba(5, 23, 36, 0.96) 72%),
      var(--localized-image, url("../images/pengsu-factory-hero.jpg")) 63% center / cover no-repeat;
  }

  .hero h1 {
    font-size: 40px;
  }

  .hero-copy {
    font-size: 15px;
    line-height: 1.65;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .hero-stats {
    margin-top: -54px;
  }

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

  .stat {
    min-height: 118px;
    padding: 20px 17px;
  }

  .stat strong {
    font-size: 22px;
  }

  .stat span {
    font-size: 11px;
  }

  .section {
    padding: 72px 0;
  }

  .section-compact {
    padding: 58px 0;
  }

  .section-head {
    align-items: start;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 30px;
  }

  .section-head h2,
  .split-copy h2 {
    font-size: 31px;
  }

  .split {
    gap: 30px;
  }

  .media-frame {
    min-height: 310px;
  }

  .map-embed {
    height: 340px;
  }

  .map-external-link {
    right: 14px;
    bottom: 14px;
  }

  .products-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .product-card:last-child {
    grid-column: auto;
  }

  .product-visual {
    height: 210px;
  }

  .cta-inner {
    align-items: start;
    flex-direction: column;
  }

  .page-hero,
  .page-hero-inner {
    min-height: 310px;
  }

  .page-hero-inner {
    padding: 70px 0 52px;
  }

  .page-hero h1 {
    font-size: 40px;
  }

  .page-hero p {
    font-size: 15px;
  }

  .strength-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .strength-item {
    min-height: 132px;
    padding: 20px 17px;
  }

  .strength-item > strong {
    font-size: 23px;
  }

  .product-detail {
    padding: 40px 0;
  }

  .product-detail-visual {
    min-height: 285px;
  }

  .detail-product-image {
    min-height: 330px;
  }

  .spec-grid,
  .process-list {
    grid-template-columns: 1fr;
  }

  .process-list li {
    min-height: 112px;
  }

  .case-card .media-frame {
    min-height: 270px;
  }

  .contact-panel {
    padding: 28px 24px;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .whatsapp {
    right: 14px;
    bottom: 14px;
    width: 52px;
    height: 52px;
  }
}