:root {
  --ink: #142033;
  --muted: #5f6c7b;
  --line: #dbe2ea;
  --panel: #f6f8fb;
  --brand: #0f5f75;
  --brand-dark: #0a3e4d;
  --accent: #f0643a;
  --white: #ffffff;
  --content: 1376px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  background: var(--white);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 62px;
  padding: 0 max(32px, calc((100vw - var(--content)) / 2));
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--brand-dark);
}

.brand-mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  width: 34px;
  height: 34px;
  color: var(--white);
  background: var(--brand);
  border-radius: 6px;
}

.brand-mark span {
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: var(--white);
}

.brand-mark span:nth-child(2) {
  height: 22px;
  background: #d9f1f7;
}

.brand-mark::after {
  position: absolute;
  right: 7px;
  bottom: 7px;
  left: 7px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
  content: "";
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 15px;
  color: var(--muted);
}

.main-nav a:hover {
  color: var(--brand);
}

.main-nav a[aria-current="page"] {
  color: var(--brand-dark);
  font-weight: 700;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.language-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

.language-switcher a {
  padding: 4px 6px;
  border-radius: 4px;
}

.language-switcher a:hover,
.language-switcher a[aria-current="true"] {
  color: var(--brand-dark);
  background: var(--panel);
  font-weight: 700;
}

.nav-cta,
.button,
.quote-form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 4px;
  font-weight: 700;
}

.nav-cta,
.button.primary,
.quote-form button {
  color: var(--white);
  background: var(--accent);
}

.nav-cta:hover,
.button.primary:hover,
.quote-form button:hover {
  background: #df5530;
}

.button.secondary {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.72);
}

.button.secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.text-link {
  display: inline-flex;
  margin-top: 22px;
  color: var(--brand);
  font-weight: 800;
}

.hero {
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(380px, 0.58fr);
  align-items: center;
  gap: 56px;
  padding: 76px max(32px, calc((100vw - var(--content)) / 2));
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(12, 34, 47, 0.95) 0%, rgba(12, 34, 47, 0.82) 47%, rgba(12, 34, 47, 0.38) 100%),
    url("./assets/hero-pvc-strip-curtain.jpg") center/cover;
}

.hero-content {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 760px;
  font-size: 62px;
  line-height: 1.04;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 660px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.hero-panel {
  display: grid;
  gap: 12px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.26);
  backdrop-filter: blur(8px);
  border-radius: 6px;
  max-width: 460px;
  justify-self: end;
}

.hero-panel h2 {
  color: var(--white);
  font-size: 28px;
}

.hero-panel div {
  padding: 16px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 4px;
}

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

.hero-panel span {
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.section {
  padding: 56px max(32px, calc((100vw - var(--content)) / 2));
}

.catalog-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  padding: 0 max(32px, calc((100vw - var(--content)) / 2));
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.catalog-strip div {
  padding: 26px 24px;
  background: var(--white);
}

.catalog-strip strong,
.catalog-strip span {
  display: block;
}

.catalog-strip strong {
  color: var(--ink);
  font-size: 18px;
}

.catalog-strip span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 14px;
}

.proof-band {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(540px, 1fr);
  gap: 48px;
  padding: 54px max(32px, calc((100vw - var(--content)) / 2));
  background: var(--brand-dark);
}

.proof-band h2,
.proof-band h3 {
  color: var(--white);
}

.proof-band p {
  color: rgba(255, 255, 255, 0.74);
}

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

.proof-card {
  min-height: 220px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
}

.proof-card span {
  display: block;
  margin-bottom: 42px;
  color: var(--accent);
  font-weight: 800;
}

.page-hero {
  padding: 68px max(32px, calc((100vw - var(--content)) / 2)) 56px;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(12, 34, 47, 0.96), rgba(12, 34, 47, 0.74)),
    url("./assets/hero-pvc-strip-curtain.jpg") center/cover;
}

.page-hero h1 {
  max-width: 1040px;
  margin: 0;
  font-size: 58px;
  line-height: 1.06;
  letter-spacing: 0;
}

.page-hero p {
  max-width: 720px;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 18px;
}

.intro,
.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(360px, 1.2fr);
  gap: 48px;
  align-items: start;
}

h2 {
  margin: 0;
  font-size: 44px;
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 12px;
  font-size: 22px;
}

p {
  margin: 0;
  color: var(--muted);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(360px, 1fr);
  gap: 48px;
  align-items: end;
  max-width: none;
}

.split-heading p:last-child {
  max-width: 760px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}

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

.product-card h3,
.product-card p,
.product-card ul,
.product-card .text-link {
  margin-left: 18px;
  margin-right: 18px;
}

.product-card h3 {
  margin-top: 18px;
  font-size: 20px;
}

.product-card ul {
  padding-left: 18px;
  margin-top: 18px;
  color: var(--muted);
}

.product-card .text-link {
  margin-bottom: 20px;
}

.product-thumb,
.application-image,
.detail-media img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.product-thumb {
  aspect-ratio: 16 / 10;
  border-bottom: 1px solid var(--line);
}

.detail-grid {
  display: grid;
  gap: 18px;
}

.detail-card {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(260px, 0.85fr) minmax(300px, 1fr);
  gap: 34px;
  align-items: start;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.detail-media {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.detail-media img {
  aspect-ratio: 4 / 3;
}

.detail-card:nth-child(even),
.soft-band {
  background: var(--panel);
}

.detail-card ul,
.check-list {
  margin: 20px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.spec-list {
  display: grid;
  gap: 10px;
  margin: 0;
}

.spec-list div {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.spec-list dt {
  color: var(--ink);
  font-weight: 800;
}

.spec-list dd {
  margin: 0;
  color: var(--muted);
}

.application-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.application-card {
  overflow: hidden;
  min-height: 260px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.application-card h3,
.application-card p,
.application-card span,
.application-card .text-link {
  margin-left: 24px;
  margin-right: 24px;
}

.application-card .text-link {
  margin-bottom: 22px;
}

.application-card span {
  display: inline-flex;
  margin-top: 24px;
  margin-bottom: 28px;
  color: var(--brand);
  font-weight: 800;
}

.application-image {
  aspect-ratio: 16 / 10;
  border-bottom: 1px solid var(--line);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.capability-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.capability-card div {
  padding: 24px;
}

.capability-card span {
  display: block;
  margin-bottom: 18px;
  color: var(--brand);
  font-weight: 800;
}

.capability-image {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

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

.process-step {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.process-step strong {
  display: block;
  margin-bottom: 12px;
  color: var(--accent);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 56px;
  align-items: start;
}

.rfq-panel {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
}

.solutions {
  background: var(--panel);
}

.quality-grid div {
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.quality-grid {
  display: grid;
  gap: 16px;
}

.quality-grid div {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  overflow: hidden;
}

.quality-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}

.quality-grid p {
  grid-column: 2;
}

.quality-image {
  grid-row: 1 / span 2;
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  margin: 0;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--line);
}

.contact {
  background: var(--brand-dark);
}

.contact h2,
.contact p {
  color: var(--white);
}

.contact p {
  color: rgba(255, 255, 255, 0.74);
}

.quote-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  background: var(--white);
  border-radius: 6px;
}

.quote-form label {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
}

.quote-form input,
.quote-form select,
.quote-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 12px 13px;
  color: var(--ink);
  font: inherit;
}

.quote-form .form-trap {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.quote-form a {
  color: var(--brand);
  font-weight: 800;
}

.quote-form button {
  border: 0;
  cursor: pointer;
  font: inherit;
}

.contact-methods {
  display: grid;
  gap: 10px;
  margin-top: 28px;
}

.contact-methods a,
.contact-methods span {
  display: inline-flex;
  width: fit-content;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 4px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  font-weight: 700;
}

.contact-methods span {
  color: rgba(255, 255, 255, 0.74);
  font-weight: 400;
}

.form-note {
  font-size: 13px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px max(32px, calc((100vw - var(--content)) / 2));
  border-top: 1px solid var(--line);
}

.footer-links {
  display: flex;
  gap: 18px;
  color: var(--muted);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.spec-table th,
.spec-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.spec-table th {
  width: 28%;
  color: var(--ink);
  background: var(--panel);
}

.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border-bottom: 0;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.7fr);
  gap: 38px;
  align-items: start;
}

.side-box {
  display: grid;
  gap: 18px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
}

.side-box img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--line);
}

.related-grid,
.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.related-card,
.faq-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.related-card h3,
.faq-card h3 {
  font-size: 20px;
}

.cta-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 34px max(32px, calc((100vw - var(--content)) / 2));
  color: var(--white);
  background: var(--brand-dark);
}

.cta-band h2,
.cta-band p {
  color: var(--white);
}

.cta-band p {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.74);
}

.anchor-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.anchor-list a {
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--brand-dark);
  background: var(--white);
  font-weight: 700;
}

@media (max-width: 1080px) {
  .product-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hero,
  .intro,
  .contact,
  .detail-card,
  .split-section,
  .proof-band,
  .two-column,
  .cta-band {
    grid-template-columns: 1fr;
  }

  .application-grid,
  .capability-grid,
  .process-grid,
  .catalog-strip,
  .proof-grid,
  .related-grid,
  .faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split-heading {
    grid-template-columns: 1fr;
    gap: 18px;
  }
}

@media (max-width: 900px) {
  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .quality-grid div {
    grid-template-columns: 150px minmax(0, 1fr);
  }
}

@media (max-width: 760px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 5vw;
  }

  .main-nav {
    flex-wrap: wrap;
    gap: 14px;
  }

  .nav-cta {
    width: 100%;
  }

  .header-actions {
    width: 100%;
    align-items: flex-start;
    flex-direction: column;
  }

  .language-switcher {
    flex-wrap: wrap;
  }

  .hero {
    min-height: auto;
    padding: 70px 5vw;
  }

  .hero h1 {
    font-size: 38px;
  }

  .page-hero h1,
  h2 {
    font-size: 34px;
  }

  .section {
    padding: 60px 5vw;
  }

  .site-header,
  .hero,
  .page-hero,
  .site-footer {
    padding-left: 5vw;
    padding-right: 5vw;
  }

  .product-grid,
  .application-grid,
  .capability-grid,
  .process-grid,
  .catalog-strip,
  .proof-grid,
  .related-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .cta-band {
    padding-left: 5vw;
    padding-right: 5vw;
  }

  .spec-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

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

  .quality-grid p,
  .quality-image {
    grid-column: auto;
    grid-row: auto;
  }

  .site-footer {
    flex-direction: column;
  }
}