:root {
  --forest: #143f35;
  --forest-deep: #0c2f28;
  --ivory: #f4f0e7;
  --paper: #fbfaf6;
  --sage: #d9e2d7;
  --brown: #98734f;
  --ink: #1f2926;
  --muted: #66706b;
  --line: rgba(20, 63, 53, 0.18);
  --serif: Georgia, 'Times New Roman', serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --header-height: 66px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

body:has(dialog[open]) { overflow: hidden; }

img { display: block; max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }

:focus-visible {
  outline: 3px solid #c68b4f;
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  background: white;
  color: var(--forest);
  transform: translateY(-150%);
}

.skip-link:focus { transform: none; }

.site-header {
  position: sticky;
  z-index: 40;
  top: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: var(--header-height);
  padding: 0 4vw;
  border-bottom: 1px solid rgba(244, 240, 231, 0.16);
  background: rgba(20, 63, 53, 0.96);
  color: var(--ivory);
  backdrop-filter: blur(12px);
}

.brand {
  font: 700 1.08rem/1 var(--serif);
  letter-spacing: 0.14em;
  text-decoration: none;
}

.site-header nav { display: flex; justify-content: center; gap: clamp(18px, 4vw, 54px); }
.site-header nav a, .header-contact { font-size: 0.82rem; letter-spacing: 0.08em; text-decoration: none; text-transform: uppercase; }
.site-header nav a { color: rgba(244, 240, 231, 0.76); }
.site-header nav a:hover { color: white; }
.header-contact { border-bottom: 1px solid currentColor; }

section[id] { scroll-margin-top: calc(var(--header-height) + 14px); }

.hero {
  display: grid;
  min-height: calc(100svh - var(--header-height));
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  background: var(--forest);
  color: var(--ivory);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(64px, 10vw, 150px) clamp(24px, 7vw, 110px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--brown);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero .eyebrow { color: #d0b28e; }

h1, h2, h3, h4, p { margin-top: 0; }

h1 {
  max-width: 700px;
  margin-bottom: 26px;
  font: 500 clamp(3.2rem, 7.8vw, 7.6rem)/0.87 var(--serif);
  letter-spacing: -0.055em;
}

.hero-intro {
  max-width: 420px;
  color: rgba(244, 240, 231, 0.68);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; margin-top: 30px; }

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.button-primary { background: var(--ivory); color: var(--forest); }
.button-text { color: var(--ivory); }
.button-light { background: var(--ivory); color: var(--forest); }

.hero-art {
  position: relative;
  min-height: 640px;
  overflow: hidden;
  background: var(--paper);
  color: var(--forest);
}

.hero-art::before {
  position: absolute;
  inset: 6% 8%;
  border: 1px solid var(--line);
  border-radius: 999px 999px 0 0;
  content: '';
}

.hero-art img {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(57%, 470px);
  max-height: 78%;
  object-fit: contain;
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 28px 24px rgba(61, 43, 28, 0.12));
}

.hero-art p { position: absolute; right: 7%; bottom: 5%; margin: 0; font: 600 0.8rem/1.5 var(--sans); text-transform: uppercase; letter-spacing: 0.12em; }
.hero-index { position: absolute; top: 5%; left: 6%; font-size: 0.75rem; letter-spacing: 0.12em; }

.section { padding: clamp(80px, 10vw, 150px) clamp(22px, 7vw, 110px); }

.section-heading { display: grid; grid-template-columns: 0.42fr 1fr; gap: 50px; align-items: start; margin-bottom: clamp(48px, 7vw, 96px); }
.section-heading h2, .contact-section h2 { max-width: 900px; margin-bottom: 0; font: 500 clamp(2.4rem, 5.6vw, 5.8rem)/0.98 var(--serif); letter-spacing: -0.045em; }

.company-intro { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(30px, 8vw, 120px); max-width: 1160px; margin-left: auto; }
.company-intro .lead { font: 400 clamp(1.35rem, 2.4vw, 2rem)/1.45 var(--serif); }
.company-intro div { color: var(--muted); }
.company-intro .company-promise { margin-top: 30px; padding: 18px 20px; border-left: 2px solid var(--forest); background: var(--sage); color: var(--forest); font-weight: 700; }

.metrics { display: grid; grid-template-columns: repeat(3, 1fr); margin: clamp(64px, 9vw, 128px) 0 40px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.metrics article { display: flex; min-height: 170px; flex-direction: column; justify-content: center; gap: 8px; padding: 30px; border-right: 1px solid var(--line); }
.metrics article:last-child { border-right: 0; }
.metrics strong { font: 500 clamp(3rem, 6vw, 5rem)/1 var(--serif); color: var(--forest); }
.metrics span { max-width: 190px; color: var(--muted); font-size: 0.8rem; line-height: 1.4; text-transform: uppercase; letter-spacing: 0.07em; }

.capabilities-grid, .services-grid, .compliance-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.capabilities-grid article { min-height: 250px; padding: 26px; border: 1px solid var(--line); background: rgba(255, 255, 255, 0.32); }
.card-number, .services-grid span { display: block; margin-bottom: 52px; color: var(--brown); font: 700 0.72rem/1 var(--sans); letter-spacing: 0.16em; }
.capabilities-grid h3, .services-grid h3 { font: 500 1.4rem/1.2 var(--serif); }
.capabilities-grid p { color: var(--muted); }

.subsection { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(44px, 8vw, 120px); margin-top: clamp(90px, 12vw, 170px); }
.subsection h3 { font: 500 clamp(2rem, 4vw, 4rem)/1.02 var(--serif); letter-spacing: -0.035em; }
.subsection > div:first-child > p:last-child { color: var(--muted); }

.locations { margin: 0; padding: 0; list-style: none; }
.locations li { display: grid; grid-template-columns: 42px 1fr; gap: 18px; padding: 24px 0; border-top: 1px solid var(--line); }
.locations li:last-child { border-bottom: 1px solid var(--line); }
.locations > li > span { display: grid; width: 36px; height: 36px; place-items: center; border-radius: 50%; background: var(--forest); color: white; font-size: 0.7rem; }
.locations h4 { margin-bottom: 7px; font: 500 1.5rem/1.1 var(--serif); }
.locations h4 small { display: block; margin-top: 5px; color: var(--brown); font: 700 0.65rem/1 var(--sans); letter-spacing: 0.12em; text-transform: uppercase; }
.locations p { margin-bottom: 0; color: var(--muted); }
.network-note { grid-column: 2; margin: 14px 0 0; padding: 18px; background: var(--sage); color: var(--forest); font-size: 0.9rem; }

.credentials { align-items: end; }
.credential-summary { display: grid; gap: 22px; margin-top: 44px; }
.credential-summary article { padding-left: 18px; border-left: 2px solid var(--brown); }
.credential-summary h4 { margin-bottom: 6px; font: 600 1rem/1.3 var(--sans); }
.credential-summary p { margin-bottom: 0; color: var(--muted); }
.credential-gallery { display: grid; grid-template-columns: 1.4fr 0.6fr; gap: 14px; align-items: stretch; }
.credential-gallery a { display: block; overflow: hidden; padding: 0; border: 1px solid var(--line); background: white; cursor: zoom-in; }
.credential-gallery img { width: 100%; height: 100%; object-fit: contain; }
.credential-main { min-height: 320px; }

.compliance-grid { margin-top: 50px; }
.compliance-grid article { padding: 12px 12px 24px; border: 1px solid var(--line); background: var(--paper); }
.compliance-grid img { width: 100%; aspect-ratio: 4 / 3; margin-bottom: 20px; object-fit: contain; background: white; }
.compliance-grid h4, .compliance-grid p { margin-right: 12px; margin-left: 12px; }
.compliance-grid h4 { font: 500 1.25rem/1.25 var(--serif); }
.compliance-grid p { margin-bottom: 0; color: var(--muted); font-size: 0.92rem; }
.compliance-grid .facility-name { margin-bottom: 10px; color: var(--brown); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase; }
.authorization-section { margin-top: 64px; padding-top: 48px; border-top: 1px solid var(--line); }
.authorization-heading { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 18px 64px; align-items: end; }
.authorization-heading .eyebrow { grid-column: 1 / -1; margin-bottom: 0; }
.authorization-heading h3 { margin: 0; font: 500 clamp(2.1rem, 4.5vw, 4rem)/0.98 var(--serif); letter-spacing: -0.035em; }
.authorization-heading > p:last-child { max-width: 650px; margin: 0; color: var(--muted); }
.authorization-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 36px; }
.authorization-grid a { display: grid; overflow: hidden; border: 1px solid var(--line); background: var(--paper); color: var(--forest); text-decoration: none; transition: transform 180ms ease, box-shadow 180ms ease; }
.authorization-grid a:hover { transform: translateY(-4px); box-shadow: 0 18px 38px rgba(20, 63, 53, 0.12); }
.authorization-grid a:focus-visible { outline: 3px solid var(--brown); outline-offset: 3px; }
.authorization-grid img { width: 100%; aspect-ratio: 611 / 841; object-fit: contain; background: white; }
.authorization-grid span { display: flex; justify-content: space-between; gap: 16px; padding: 16px 18px; border-top: 1px solid var(--line); font-size: 0.78rem; letter-spacing: 0.05em; text-transform: uppercase; }
.authorization-grid strong { color: var(--brown); }
.qualification-note { margin-top: 20px; padding: 22px; background: #e8dcc9; color: #584936; }

.services-section { background: var(--forest-deep); color: var(--ivory); }
.section-heading-light .eyebrow, .services-section .eyebrow { color: #d0b28e; }
.services-grid { grid-template-columns: repeat(2, 1fr); }
.services-grid article { min-height: 260px; padding: 30px; border: 1px solid rgba(244, 240, 231, 0.18); }
.services-grid span { margin-bottom: 70px; color: #d0b28e; }
.services-grid p { margin-bottom: 0; color: rgba(244, 240, 231, 0.64); }
.services-grid .service-featured { display: grid; min-height: 390px; grid-column: 1 / -1; grid-template-columns: 0.9fr 1.1fr; gap: clamp(36px, 7vw, 110px); padding: clamp(32px, 5vw, 72px); border: 0; background: var(--ivory); color: var(--forest); }
.services-grid .service-featured span { margin-bottom: 58px; color: var(--brown); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; }
.services-grid .service-featured h3 { max-width: 650px; font-size: clamp(2rem, 4vw, 4.3rem); letter-spacing: -0.04em; }
.services-grid .service-featured p { max-width: 650px; color: var(--muted); }
.design-capabilities { display: grid; align-content: center; margin: 0; padding: 0; list-style: none; }
.design-capabilities li { padding: 22px 0; border-top: 1px solid var(--line); }
.design-capabilities li:last-child { border-bottom: 1px solid var(--line); }
.design-capabilities strong { display: block; margin-bottom: 5px; font: 500 1.25rem/1.2 var(--serif); }
.design-capabilities small { display: block; color: var(--muted); font-size: 0.9rem; line-height: 1.55; }

.process { display: grid; grid-template-columns: 0.7fr 1.3fr; gap: clamp(40px, 8vw, 120px); margin-top: clamp(90px, 12vw, 160px); }
.process-heading h3 { font: 500 clamp(2.1rem, 4vw, 4.3rem)/1 var(--serif); }
.process ol { margin: 0; padding: 0; list-style: none; }
.process li { display: grid; grid-template-columns: 50px 1fr; gap: 18px; padding: 25px 0; border-top: 1px solid rgba(244, 240, 231, 0.18); }
.process li:last-child { border-bottom: 1px solid rgba(244, 240, 231, 0.18); }
.process li > span { color: #d0b28e; font-size: 0.75rem; letter-spacing: 0.1em; }
.process h4 { margin-bottom: 6px; font: 500 1.3rem/1.2 var(--serif); }
.process li p { margin-bottom: 0; color: rgba(244, 240, 231, 0.6); }
.process-note { grid-column: 2; max-width: 680px; margin-top: 16px; padding: 22px; border-left: 2px solid #d0b28e; background: rgba(255, 255, 255, 0.05); }

.products-section { background: var(--paper); }
.product-heading { grid-template-columns: 1fr 0.7fr; align-items: end; }
.product-heading > p { max-width: 520px; margin-bottom: 7px; color: var(--muted); }
.product-toolbar { display: flex; gap: 10px; overflow-x: auto; margin-bottom: 34px; padding-bottom: 4px; scrollbar-width: none; }
.product-filter { display: inline-flex; min-width: max-content; min-height: 48px; align-items: center; gap: 12px; padding: 10px 18px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--forest); cursor: pointer; }
.product-filter span { display: grid; min-width: 24px; height: 24px; place-items: center; border-radius: 50%; background: var(--sage); font-size: 0.72rem; }
.product-filter.is-active { background: var(--forest); color: white; }
.product-filter.is-active span { background: rgba(255, 255, 255, 0.16); }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.product-card { min-width: 0; margin: 0; overflow: hidden; padding: 0; border: 1px solid var(--line); border-radius: 0; background: white; color: inherit; text-align: left; cursor: zoom-in; }
.product-visual { position: relative; display: block; aspect-ratio: 1; background: white; }
.product-card img { width: 100%; height: 100%; object-fit: contain; transition: transform 420ms ease; }
.product-code { display: block; margin: 0; padding: 14px 16px; border-top: 1px solid var(--line); color: var(--forest); font-size: 0.75rem; letter-spacing: 0.06em; overflow-wrap: anywhere; }
.product-fallback { position: absolute; inset: 0; display: none; place-items: center; background: var(--sage); color: rgba(20, 63, 53, 0.18); font: 500 clamp(5rem, 12vw, 10rem)/1 var(--serif); }
.product-visual.is-missing .product-fallback, .dialog-visual.is-missing::after { display: grid; }
.product-card:hover img { transform: scale(1.025); }

.contact-section { display: grid; grid-template-columns: 1fr 0.85fr; gap: clamp(50px, 9vw, 140px); padding: clamp(80px, 11vw, 160px) clamp(22px, 7vw, 110px); background: var(--forest); color: var(--ivory); }
.contact-section > div > p:last-child { max-width: 560px; margin-top: 28px; color: rgba(244, 240, 231, 0.67); }
.contact-section .eyebrow { color: #d0b28e; }
.contact-card { display: grid; gap: 0; align-self: start; padding: 8px 28px; border-radius: 3px; background: var(--ivory); color: var(--ink); font-style: normal; }
.contact-card div { padding: 20px 0; border-bottom: 1px solid var(--line); }
.contact-card div:last-child { border-bottom: 0; }
.contact-card span { display: block; margin-bottom: 5px; color: var(--muted); font-size: 0.67rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; }
.contact-card strong { font: 500 1.7rem/1.2 var(--serif); }
.contact-card a { text-underline-offset: 4px; }
.contact-card p { margin: 0; }
.wechat-row button { min-height: 38px; margin-top: 10px; padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--forest); cursor: pointer; }
.contact-section > .button { grid-column: 1; justify-self: start; }

footer { display: flex; align-items: center; gap: 24px; padding: 28px 4vw; background: var(--forest-deep); color: rgba(244, 240, 231, 0.72); }
footer strong { color: var(--ivory); font-family: var(--serif); letter-spacing: 0.12em; }
footer p { margin: 0; font-size: 0.75rem; }
footer a { margin-left: auto; font-size: 0.75rem; }

.product-dialog { width: min(920px, calc(100vw - 28px)); max-height: calc(100vh - 28px); padding: 0; border: 0; border-radius: 4px; background: var(--ivory); color: var(--ink); }
.product-dialog::backdrop { background: rgba(4, 25, 21, 0.76); backdrop-filter: blur(6px); }
.dialog-close { position: absolute; z-index: 2; top: 14px; right: 14px; display: grid; width: 44px; height: 44px; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: var(--paper); color: var(--forest); font-size: 1.7rem; cursor: pointer; }
.dialog-visual { position: relative; min-height: 280px; background: white; }
.dialog-visual img { width: 100%; height: 100%; object-fit: contain; }
.dialog-visual.is-missing::after { position: absolute; inset: 0; place-items: center; background: var(--sage); color: rgba(20, 63, 53, 0.2); content: 'S'; font: 500 10rem/1 var(--serif); }
.dialog-copy { padding: 34px; }
.dialog-copy h2 { font: 500 clamp(2rem, 4vw, 3.4rem)/1 var(--serif); }

@media (min-width: 800px) {
  .product-dialog[open] { display: grid; grid-template-columns: 1.25fr 0.75fr; }
  .dialog-copy { display: flex; flex-direction: column; justify-content: center; }
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr 0.9fr; }
  .hero-copy { padding-right: 36px; padding-left: 36px; }
  .section-heading { grid-template-columns: 1fr; gap: 10px; }
  .company-intro, .subsection, .process { grid-template-columns: 1fr; }
  .network-note { grid-column: auto; }
  .process-note { grid-column: auto; }
  .capabilities-grid, .compliance-grid { grid-template-columns: 1fr; }
  .authorization-heading { grid-template-columns: 1fr; }
  .capabilities-grid article { min-height: auto; }
  .card-number { margin-bottom: 30px; }
  .product-heading { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  :root { --header-height: 60px; }
  .site-header { grid-template-columns: auto 1fr; padding: 0 18px; }
  .site-header nav { justify-content: flex-end; gap: 14px; }
  .site-header nav a { font-size: 0.68rem; }
  .header-contact { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; }
  .hero-copy { min-height: calc(78svh - var(--header-height)); padding: 72px 22px; }
  h1 { font-size: clamp(3.5rem, 18vw, 5.7rem); }
  .hero-art { min-height: 82svh; }
  .hero-art img { width: 66%; }
  .section { padding: 82px 20px; }
  .section-heading h2, .contact-section h2 { font-size: clamp(2.5rem, 13vw, 4rem); }
  .company-intro { gap: 24px; }
  .metrics { grid-template-columns: 1fr; }
  .metrics article { min-height: 135px; border-right: 0; border-bottom: 1px solid var(--line); }
  .metrics article:last-child { border-bottom: 0; }
  .credential-gallery { grid-template-columns: 1fr; }
  .credential-main { min-height: 240px; }
  .authorization-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .services-grid article { min-height: auto; }
  .services-grid span { margin-bottom: 36px; }
  .services-grid .service-featured { grid-template-columns: 1fr; }
  .services-grid .service-featured span { margin-bottom: 32px; }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
  .product-code { padding: 11px 10px; font-size: 0.68rem; }
  .contact-section { grid-template-columns: 1fr; padding: 82px 20px; }
  .contact-section > .button { grid-column: auto; }
  footer { align-items: flex-start; flex-direction: column; }
  footer a { margin-left: 0; }
  .product-dialog { overflow-y: auto; }
  .dialog-visual { max-height: 55vh; }
  .dialog-copy { padding: 24px; }
}

@media (max-width: 360px) {
  .site-header nav { gap: 9px; }
  .site-header nav a { font-size: 0.62rem; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}