:root {
  --ink: #08283b;
  --ink-2: #173c51;
  --muted: #607786;
  --line: #d9e2e7;
  --blue: #0868cf;
  --blue-dark: #064e9c;
  --blue-soft: #e7f4fb;
  --paper: #ffffff;
  --warm: #f7f5f0;
  --navy: #052d42;
  --shadow: 0 18px 50px rgba(8, 40, 59, 0.09);
  --container: min(1180px, calc(100% - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, select { font: inherit; }
.container { width: var(--container); margin-inline: auto; }
.section { padding: 92px 0; }
.section-kicker {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.section-title {
  margin: 0;
  color: var(--ink);
  font-size: clamp(2rem, 4vw, 3.55rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.045em;
}
.section-title.center, .section-intro.center { text-align: center; }
.section-intro {
  max-width: 760px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 1rem;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.trust-bar { background: #fff; border-bottom: 1px solid var(--line); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-item {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  color: var(--ink-2);
  font-size: 0.83rem;
  font-weight: 800;
}
.trust-item svg { width: 16px; color: var(--blue); }

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  background: rgba(255,255,255,0.94);
  border-bottom: 1px solid rgba(217,226,231,0.88);
  backdrop-filter: blur(16px);
}
.header-row {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 50%;
  background: #f75f47;
  color: #fff;
  font-size: 0.78rem;
  font-weight: 950;
  letter-spacing: -0.04em;
}
.brand-copy strong { display: block; font-size: 0.95rem; line-height: 1; }
.brand-copy small {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}
.site-nav { display: flex; align-items: center; gap: 22px; margin-left: auto; }
.site-nav a {
  position: relative;
  padding: 27px 0;
  font-size: 0.92rem;
  font-weight: 850;
}
.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 19px;
  left: 0;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transition: transform 180ms ease;
}
.site-nav a:hover::after, .site-nav a:focus-visible::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.site-nav a[aria-current="page"] { color: var(--blue); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.language-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 15px;
  color: var(--ink-2);
  font-size: 0.82rem;
  font-weight: 800;
}
.language-switcher { position: relative; }
.language-switcher-toggle {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  padding: 0 14px;
  color: var(--ink-2);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 850;
}
.language-switcher-toggle:hover, .language-switcher-toggle[aria-expanded="true"] { border-color: #8ebce8; background: #f4faff; color: var(--blue-dark); }
.language-switcher-toggle:focus-visible { outline: 3px solid #8ec5f6; outline-offset: 3px; }
.language-switcher-globe { color: var(--blue); font-size: 1rem; }
.language-switcher-code { font-weight: 950; }
.language-switcher-caret { margin-left: 2px; transition: transform 180ms ease; }
.language-switcher-toggle[aria-expanded="true"] .language-switcher-caret { transform: rotate(180deg); }
.language-menu {
  position: absolute;
  z-index: 80;
  top: calc(100% + 12px);
  right: 0;
  display: none;
  width: 250px;
  max-height: min(520px, calc(100vh - 150px));
  overflow-y: auto;
  overflow-x: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  padding: 10px;
  box-shadow: 0 22px 55px rgba(8,40,59,0.18);
}
.language-menu.is-open { display: block; }
.language-menu-title { margin: 4px 8px 8px; color: var(--muted); font-size: 0.72rem; font-weight: 900; letter-spacing: 0.12em; text-transform: uppercase; }
.language-option {
  width: 100%;
  display: grid;
  grid-template-columns: 34px 1fr auto;
  gap: 10px;
  align-items: center;
  border: 0;
  border-radius: 10px;
  background: transparent;
  padding: 13px 12px;
  color: var(--ink-2);
  cursor: pointer;
  text-align: left;
}
.language-option:hover, .language-option:focus-visible { background: var(--blue-soft); color: var(--blue-dark); outline: 0; }
.language-option[aria-current="true"] { background: #f1f8fc; color: var(--ink); font-weight: 900; }
.language-option-flag { font-size: 1.25rem; }
.language-option-check { color: var(--blue); font-weight: 950; }
.goog-te-banner-frame, .goog-te-balloon-frame, #goog-gt-tt, .goog-te-spinner-pos { display: none !important; }
body { top: 0 !important; }
.skiptranslate iframe { visibility: hidden !important; }
#google_translate_element { position: fixed; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); opacity: 0; pointer-events: none; }
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid transparent;
  border-radius: 2px;
  padding: 13px 24px;
  font-size: 0.9rem;
  font-weight: 900;
  line-height: 1;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--blue); color: #fff; }
.button-primary:hover { background: var(--blue-dark); }
.button-light { background: #fff; color: var(--ink); }
.button-outline { border-color: currentColor; background: transparent; color: #fff; }
.button-dark { background: var(--navy); color: #fff; }
.button-dark:hover { background: var(--ink-2); }
.button-gold { background: #f55f49; color: #fff; }
.button-gold:hover { background: #d94a38; }
.button-small { min-height: 42px; padding: 11px 18px; }

.hero {
  position: relative;
  min-height: 690px;
  overflow: hidden;
  background: #082f43;
  color: #fff;
}
.hero-media { position: absolute; inset: 0; overflow: hidden; }
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 48%;
  filter: saturate(0.82) contrast(1.02) brightness(0.88);
  transform: scale(1.012);
}
.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 48%, rgba(5,31,44,0.72) 0%, rgba(5,31,44,0.63) 34%, rgba(5,31,44,0.48) 72%, rgba(5,31,44,0.42) 100%),
    linear-gradient(90deg, rgba(5,31,44,0.34) 0%, rgba(5,31,44,0.08) 46%, rgba(5,31,44,0.2) 100%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(2,20,29,0.08) 0%, rgba(2,20,29,0.02) 55%, rgba(2,20,29,0.28) 100%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  min-height: 690px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-content {
  width: 100%;
  max-width: 1060px;
  margin-inline: auto;
  padding: 72px 0 64px;
  text-align: center;
}
.hero-eyebrow { margin: 0 0 18px; font-size: 0.9rem; font-weight: 850; }
.hero-eyebrow, .hero h1, .hero-note { text-shadow: 0 3px 24px rgba(0,20,30,0.72); }
.hero h1 {
  margin: 0;
  font-size: clamp(3.4rem, 5.8vw, 5.45rem);
  font-weight: 500;
  line-height: 0.94;
  letter-spacing: -0.06em;
  text-wrap: balance;
}
.hero h1 span { display: block; color: #dcecff; }
.mobile-break { display: none; }
.hero-note { margin: 28px 0 0; font-size: 1.07rem; font-weight: 700; }
.hero-actions { display: flex; justify-content: center; gap: 14px; margin-top: 34px; }

.products { background: #fff; }
.product-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 22px; margin-top: 46px; }
.product-card {
  position: relative;
  min-height: 176px;
  display: grid;
  grid-template-columns: 148px 1fr;
  align-items: center;
  gap: 22px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 18px;
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}
.product-card:hover { border-color: #91bce8; transform: translateY(-3px); box-shadow: var(--shadow); }
.product-card:focus-visible { outline: 3px solid #8ec5f6; outline-offset: 4px; }
.product-card::after {
  content: "→";
  position: absolute;
  right: 18px;
  bottom: 14px;
  color: var(--blue);
  font-weight: 950;
  transition: transform 180ms ease;
}
.product-card:hover::after { transform: translateX(4px); }
.product-image { display: grid; height: 124px; place-items: center; background: #fff; overflow: hidden; }
.product-image img { width: 100%; height: 100%; object-fit: contain; }
.product-card h3 { margin: 0; font-size: 1.36rem; font-weight: 950; }
.product-card p { margin: 8px 0 0; color: #334e60; font-size: 0.88rem; line-height: 1.65; }

.why { padding-top: 48px; }
.benefit-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 30px 80px; margin-top: 52px; }
.benefit { display: grid; grid-template-columns: 26px 1fr; gap: 16px; }
.benefit-check { color: var(--blue); font-size: 1.35rem; font-weight: 950; }
.benefit h3 { margin: 0; font-size: 1.15rem; font-weight: 950; }
.benefit p { margin: 7px 0 0; color: #334e60; font-size: 0.91rem; }
.source-offer {
  display: grid;
  grid-template-columns: 130px 1fr auto;
  align-items: center;
  gap: 30px;
  margin-top: 62px;
  background: #e8f1fb;
  padding: 28px 42px;
}
.source-offer img { width: 110px; height: 82px; object-fit: contain; }
.source-offer h3 { margin: 0; font-size: 1.4rem; font-weight: 950; }
.source-offer p { margin: 7px 0 0; color: var(--muted); }
.step-strip {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  border: 1px solid var(--line);
  border-top: 0;
}
.step {
  min-height: 78px;
  display: flex;
  align-items: center;
  gap: 13px;
  border-right: 1px solid var(--line);
  padding: 18px 22px;
  font-size: 0.88rem;
  font-weight: 900;
}
.step:last-child { border-right: 0; }
.step span { display: grid; width: 34px; height: 34px; place-items: center; border-radius: 50%; background: #ffe088; font-size: 0.7rem; }

.production { background: var(--blue-soft); }
.decision-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; margin-top: 50px; }
.decision-card {
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid #c7dbe6;
  border-radius: 20px;
  background: #fff;
  padding: 24px;
  box-shadow: 0 12px 30px rgba(8,40,59,0.06);
}
.decision-copy { margin-top: 0; }
.decision-card h3 { margin: 0; font-size: 1.28rem; font-weight: 950; }
.decision-card p { margin: 10px 0 0; color: var(--muted); font-size: 0.88rem; }

.cases { background: #fff; }
.case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 48px; }
.case-card { overflow: hidden; background: #111; box-shadow: 0 10px 30px rgba(8,40,59,0.08); }
.case-card img { width: 100%; aspect-ratio: 800 / 950; object-fit: cover; transition: transform 350ms ease; }
.case-card:hover img { transform: scale(1.025); }
.center-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.about { padding-top: 56px; }
.stats {
  display: grid;
  grid-template-columns: repeat(5,1fr);
  margin-top: 40px;
  background: var(--navy);
  color: #fff;
  padding: 26px 30px;
  border-radius: 18px;
  box-shadow: 0 16px 40px rgba(5,45,66,0.14);
}
.stat { border-left: 3px solid #75bdf2; padding: 3px 18px; }
.stat strong, .stat small { display: block; }
.stat strong { font-size: 1rem; }
.stat small { margin-top: 7px; color: rgba(231,244,251,0.72); font-size: 0.74rem; }
.about-copy { max-width: 1040px; margin: 42px auto 0; }
.about-copy p { margin: 0; font-size: 1.02rem; font-weight: 650; line-height: 1.9; }
.about-copy h3 { margin: 14px 0 2px; font-size: 1.18rem; font-weight: 950; }
.factory-figure { max-width: 740px; margin: 30px auto 0; }
.factory-figure img,
.factory-figure video { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; background: #061f2d; }
.factory-figure figcaption { margin-top: 14px; text-align: center; font-size: 0.86rem; font-weight: 850; }

.contact { padding-top: 42px; text-align: center; }
.contact h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
.contact-lead { margin: 14px auto 0; max-width: 850px; font-weight: 750; }
.contact-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; max-width: 960px; margin: 32px auto 0; }
.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border: 1px solid #bfd9e7;
  border-radius: 16px;
  background: #f6fbfe;
  padding: 22px 24px;
  font-size: 0.86rem;
  box-shadow: 0 12px 30px rgba(8,40,59,0.07);
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}
.contact-card:hover {
  border-color: #75bdf2;
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(8,40,59,0.11);
}
.contact-card span { color: var(--ink); font-weight: 950; }
.contact-card strong { color: var(--ink-2); font-weight: 750; }

.faq { padding-top: 34px; }
.faq-wrap { width: min(820px, calc(100% - 40px)); margin-inline: auto; }
.faq-list { display: grid; gap: 14px; margin-top: 36px; }
.faq-list details {
  border: 1px solid #bfd9e7;
  border-radius: 16px;
  background: #f8fcfe;
  padding: 20px 22px;
  box-shadow: 0 10px 26px rgba(8,40,59,0.06);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}
.faq-list details[open] {
  border-color: #75bdf2;
  box-shadow: 0 14px 34px rgba(8,40,59,0.09);
}
.faq-list summary { position: relative; cursor: pointer; list-style: none; padding-right: 46px; font-weight: 950; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 0;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 50%;
  background: #e7f4fb;
  color: #f55f49;
  font-size: 1.15rem;
  line-height: 1;
  transform: translateY(-50%);
}
.faq-list details[open] summary::after { content: "×"; background: #f55f49; color: #fff; }
.faq-list p { margin: 14px 0 0; padding-top: 14px; border-top: 1px solid #d7e8f0; color: var(--muted); font-size: 0.9rem; }

/* Shared inner pages */
.page-hero {
  position: relative;
  overflow: hidden;
  background: var(--navy);
  color: #fff;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(5,45,66,0.98) 0%, rgba(5,45,66,0.92) 48%, rgba(5,45,66,0.35) 100%);
  pointer-events: none;
}
.page-hero-media { position: absolute; inset: 0 0 0 52%; }
.page-hero-media img { width: 100%; height: 100%; object-fit: cover; }
.process-hero .page-hero-media { inset: 0 0 0 48%; }
.process-hero .page-hero-media img {
  object-position: 52% center;
  filter: saturate(0.76) contrast(1.04) brightness(0.78);
  transform: scale(1.015);
}
.process-hero::after {
  background:
    linear-gradient(90deg, rgba(5,45,66,1) 0%, rgba(5,45,66,0.98) 44%, rgba(5,45,66,0.76) 57%, rgba(5,45,66,0.24) 100%),
    linear-gradient(180deg, rgba(4,31,45,0.08), rgba(4,31,45,0.38));
}
.page-hero-inner {
  position: relative;
  z-index: 2;
  min-height: 430px;
  display: flex;
  align-items: center;
  padding-block: 70px;
}
.page-hero-copy { max-width: 720px; }
.breadcrumb { margin: 0 0 20px; color: rgba(255,255,255,0.68); font-size: 0.82rem; font-weight: 800; }
.breadcrumb a:hover { color: #fff; }
.page-kicker { margin: 0 0 12px; color: #8ccaff; font-size: 0.78rem; font-weight: 900; letter-spacing: 0.14em; }
.page-hero h1 { margin: 0; max-width: 760px; font-size: clamp(2.7rem,5vw,4.8rem); line-height: 1.02; letter-spacing: -0.055em; }
.page-hero-copy > p:last-of-type { max-width: 650px; margin: 22px 0 0; color: rgba(255,255,255,0.78); font-size: 1.04rem; }
.page-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.subnav {
  position: sticky;
  z-index: 20;
  top: 79px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(14px);
}
.subnav-inner { display: flex; gap: 8px; overflow-x: auto; padding: 12px 0; scrollbar-width: none; }
.subnav-inner::-webkit-scrollbar { display: none; }
.subnav a { flex: 0 0 auto; border-radius: 999px; padding: 8px 14px; color: var(--ink-2); font-size: 0.82rem; font-weight: 850; }
.subnav a:hover { background: var(--blue-soft); color: var(--blue-dark); }
.lead-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 70px; align-items: start; }
.lead-copy { position: sticky; top: 170px; }
.lead-copy p { margin: 18px 0 0; color: var(--muted); }
.info-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; }
.info-card {
  border: 1px solid #c7dbe6;
  border-radius: 18px;
  background: #fff;
  padding: 26px;
  box-shadow: 0 12px 30px rgba(8,40,59,0.06);
}
.info-card .card-number { display: inline-grid; min-width: 34px; height: 34px; place-items: center; border-radius: 50%; background: var(--blue-soft); color: var(--blue); font-size: 0.75rem; font-weight: 950; }
.info-card h2, .info-card h3 { margin: 18px 0 0; font-size: 1.28rem; line-height: 1.25; }
.info-card p { margin: 10px 0 0; color: var(--muted); font-size: 0.92rem; }
.info-card ul, .check-list { margin: 16px 0 0; padding: 0; list-style: none; }
.info-card li, .check-list li { position: relative; padding: 7px 0 7px 24px; color: var(--ink-2); font-size: 0.9rem; }
.info-card li::before, .check-list li::before { content: "✓"; position: absolute; left: 0; color: #f55f49; font-weight: 950; }
.soft-section { background: var(--blue-soft); }
.compare-wrap { margin-top: 42px; overflow-x: auto; border: 1px solid #bfd9e7; border-radius: 18px; background: #fff; box-shadow: 0 14px 34px rgba(8,40,59,0.06); }
.compare-table { width: 100%; min-width: 760px; border-collapse: collapse; }
.compare-table th, .compare-table td { border-bottom: 1px solid var(--line); padding: 18px 20px; text-align: left; vertical-align: top; }
.compare-table th { background: #f3faff; color: var(--ink); font-size: 0.84rem; }
.compare-table td { color: var(--muted); font-size: 0.88rem; }
.compare-table td:first-child { color: var(--ink); font-weight: 900; }
.compare-table tr:last-child td { border-bottom: 0; }
.timeline { display: grid; gap: 18px; margin-top: 48px; counter-reset: process; }
.timeline-item { display: grid; grid-template-columns: 86px 1fr; gap: 24px; align-items: stretch; counter-increment: process; }
.timeline-marker { position: relative; display: grid; place-items: start center; }
.timeline-marker::before { content: counter(process, decimal-leading-zero); display: grid; width: 54px; height: 54px; place-items: center; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 950; }
.timeline-marker::after { content: ""; position: absolute; top: 60px; bottom: -24px; width: 2px; background: #b9d7e7; }
.timeline-item:last-child .timeline-marker::after { display: none; }
.timeline-content { border: 1px solid #c7dbe6; border-radius: 18px; background: #fff; padding: 25px 28px; }
.timeline-content h2, .timeline-content h3 { margin: 0; font-size: 1.25rem; }
.timeline-content p { margin: 8px 0 0; color: var(--muted); }
.catalog-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; margin-top: 46px; }
.catalog-card { display: flex; flex-direction: column; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: #fff; transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease; }
.catalog-card:hover { transform: translateY(-3px); border-color: #91bce8; box-shadow: var(--shadow); }
.catalog-card:focus-visible { outline: 3px solid #8ec5f6; outline-offset: 4px; }
.catalog-card img { width: 100%; aspect-ratio: 16/10; object-fit: contain; background: #f8fbfc; padding: 18px; }
.catalog-copy { display: flex; flex: 1; flex-direction: column; padding: 22px; }
.catalog-copy small { color: var(--blue); font-weight: 900; }
.catalog-copy h2, .catalog-copy h3 { margin: 7px 0 0; font-size: 1.35rem; }
.catalog-copy p { margin: 10px 0 0; color: var(--muted); font-size: 0.9rem; }
.catalog-copy .text-link { margin-top: auto; padding-top: 18px; color: #f55f49; font-weight: 900; }

.product-detail-hero {
  overflow: hidden;
  background: linear-gradient(135deg, #f2f9fd 0%, #fff 58%, #edf7fc 100%);
  padding: 72px 0 82px;
}
.product-detail-grid { display: grid; grid-template-columns: 1.02fr 0.98fr; gap: 68px; align-items: center; }
.product-detail-copy .breadcrumb { margin: 0 0 30px; color: var(--muted); font-size: 0.84rem; font-weight: 800; }
.product-detail-copy .breadcrumb a:hover { color: var(--blue); }
.product-detail-copy h1 { margin: 0; font-size: clamp(2.85rem,5.8vw,5.25rem); line-height: 0.98; letter-spacing: -0.06em; }
.product-detail-lead { max-width: 680px; margin: 24px 0 0; color: var(--ink-2); font-size: 1.08rem; line-height: 1.85; }
.product-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
.product-tag { border: 1px solid #bcd8e7; border-radius: 999px; background: #fff; padding: 8px 13px; color: var(--ink-2); font-size: 0.78rem; font-weight: 850; }
.product-detail-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.product-detail-media { position: relative; margin: 0; border: 1px solid #b9d8e8; border-radius: 28px 6px 28px 6px; background: #fff; padding: 34px; box-shadow: 24px 24px 0 #dff1fa; }
.product-detail-media::before { content: ""; position: absolute; top: -12px; right: 28px; width: 76px; height: 12px; background: #f75f47; }
.product-detail-media img { width: 100%; aspect-ratio: 4/3.35; object-fit: contain; }
.product-detail-media figcaption { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 15px; color: var(--muted); font-size: 0.78rem; text-align: center; }
.product-detail-section { padding: 86px 0; }
.product-detail-heading { display: grid; grid-template-columns: 0.72fr 1.28fr; gap: 70px; align-items: end; }
.product-detail-heading p { margin: 0; color: var(--muted); font-size: 1rem; line-height: 1.85; }
.product-option-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; margin-top: 42px; }
.product-option-card { position: relative; min-height: 230px; border: 1px solid #c9dee9; border-radius: 20px; background: #fff; padding: 30px; box-shadow: 0 14px 36px rgba(8,40,59,0.06); }
.product-option-card::before { content: ""; position: absolute; top: 0; left: 30px; width: 48px; height: 4px; background: #f75f47; }
.product-option-card small { display: block; color: var(--blue); font-size: 0.75rem; font-weight: 950; letter-spacing: 0.12em; }
.product-option-card h2, .product-option-card h3 { margin: 42px 0 0; font-size: 1.38rem; line-height: 1.25; }
.product-option-card p { margin: 12px 0 0; color: var(--muted); font-size: 0.91rem; line-height: 1.75; }
.product-use-section { background: var(--navy); color: #fff; }
.product-use-section .section-title { color: #fff; }
.product-use-section .section-intro { color: rgba(255,255,255,0.68); }
.product-use-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; margin-top: 42px; }
.product-use-card { border: 1px solid rgba(255,255,255,0.16); border-radius: 18px; background: rgba(255,255,255,0.055); padding: 26px; }
.product-use-card strong { display: block; color: #8dccff; font-size: 0.76rem; letter-spacing: 0.11em; }
.product-use-card h3 { margin: 14px 0 0; font-size: 1.22rem; }
.product-use-card p { margin: 9px 0 0; color: rgba(255,255,255,0.66); font-size: 0.88rem; }
.product-process-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 16px; margin-top: 42px; counter-reset: product-process; }
.product-process-step { counter-increment: product-process; border-top: 1px solid #abcfe2; padding: 24px 8px 0 0; }
.product-process-step::before { content: counter(product-process, decimal-leading-zero); display: block; color: #f75f47; font-size: 0.78rem; font-weight: 950; letter-spacing: 0.08em; }
.product-process-step h3 { margin: 16px 0 0; font-size: 1.13rem; }
.product-process-step p { margin: 8px 0 0; color: var(--muted); font-size: 0.86rem; }
.product-detail-contact { padding-top: 18px; }
.case-study-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; margin-top: 46px; }
.case-study { display: flex; flex-direction: column; overflow: hidden; border-radius: 18px; background: var(--navy); color: #fff; box-shadow: 0 14px 34px rgba(8,40,59,0.12); transition: transform 180ms ease, box-shadow 180ms ease; }
.case-study:hover { transform: translateY(-4px); box-shadow: 0 20px 44px rgba(8,40,59,0.18); }
.case-study img { width: 100%; aspect-ratio: 4/4.6; object-fit: cover; }
.case-study-copy { display: flex; flex: 1; flex-direction: column; padding: 22px; }
.case-study-copy small { color: #8ccaff; font-weight: 900; }
.case-study-copy h2, .case-study-copy h3 { margin: 7px 0 0; font-size: 1.24rem; }
.case-study-copy p { margin: 8px 0 0; color: rgba(255,255,255,0.68); font-size: 0.88rem; }
.case-study-link { margin-top: auto; padding-top: 20px; color: #fff; font-size: 0.84rem; font-weight: 900; }
.case-study:hover .case-study-link { color: #8ccaff; }
.case-editorial-hero { padding: 68px 0 42px; background: #fff; }
.case-editorial-head { max-width: 920px; margin-inline: auto; text-align: center; }
.case-editorial-head .breadcrumb { color: var(--muted); }
.case-editorial-head .breadcrumb a:hover { color: var(--blue); }
.case-editorial-head h1 { margin: 0; font-size: clamp(2.8rem,6vw,5.4rem); line-height: 1; letter-spacing: -0.06em; }
.case-editorial-lead { max-width: 760px; margin: 22px auto 0; color: var(--muted); font-size: 1.04rem; }
.case-editorial-body { padding: 28px 0 92px; }
.case-editorial-gallery { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 22px; }
.case-editorial-gallery img { width: 100%; height: 100%; aspect-ratio: 3/4.45; object-fit: cover; }
.case-editorial-article { max-width: 1120px; margin: 64px auto 0; }
.case-editorial-article h2 { margin: 0; font-size: clamp(1.7rem,3vw,2.45rem); line-height: 1.2; }
.case-editorial-article p { margin: 22px 0 0; color: var(--ink-2); font-size: 1.04rem; line-height: 1.95; }
.case-editorial-photo { margin: 64px 0 0; }
.case-editorial-photo img { width: 100%; max-height: 760px; aspect-ratio: 16/8.5; object-fit: cover; }
.case-leather-gallery img { aspect-ratio: 4/3; }
.case-product-gallery img { aspect-ratio: 4/3; object-fit: contain; background: #f4f7f8; }
.case-pair-gallery { grid-template-columns: repeat(2,minmax(0,1fr)); }
.case-pair-gallery img { aspect-ratio: 1/1; object-fit: cover; }
.case-primary-photo img { width: 100%; height: auto; max-height: 920px; aspect-ratio: auto; object-fit: contain; background: #f4f7f8; }
.case-image-note { margin-top: 12px; color: var(--muted); font-size: 0.86rem; line-height: 1.65; }
.case-next-text { display: inline-flex; margin-top: 54px; border-bottom: 2px solid var(--blue); padding-bottom: 5px; color: var(--blue-dark); font-weight: 900; }
.case-next-text:hover { color: #f55f49; border-color: #f55f49; }
.split-panel { display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; border-radius: 22px; background: var(--navy); color: #fff; }
.split-panel img { width: 100%; height: 100%; min-height: 390px; object-fit: cover; }
.split-copy { display: flex; flex-direction: column; justify-content: center; padding: 52px; }
.split-copy h2 { margin: 0; font-size: clamp(2rem,3.4vw,3.2rem); line-height: 1.08; }
.split-copy p { margin: 18px 0 0; color: rgba(255,255,255,0.7); }
.quote-panel { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 30px; border-radius: 22px; background: var(--blue); color: #fff; padding: 42px 48px; }
.quote-panel h2 { margin: 0; font-size: clamp(1.8rem,3vw,2.7rem); line-height: 1.12; }
.quote-panel p { margin: 10px 0 0; color: rgba(255,255,255,0.72); }
.quote-panel .button { background: #fff; color: var(--ink); }
.plain-copy { max-width: 860px; margin-inline: auto; }
.plain-copy h2 { margin: 34px 0 0; font-size: 1.45rem; }
.plain-copy p { margin: 12px 0 0; color: var(--muted); }
.company-profile { margin-top: 42px; }
.company-profile p { font-size: 1rem; line-height: 1.9; }
.company-profile h2 { color: var(--ink); }
.about-hero .page-hero-media { inset: 0 0 0 48%; }
.about-hero .page-hero-media img { object-position: center 48%; }
.about-section-head { max-width: 800px; margin: 0 auto 42px; text-align: center; }
.about-section-head .section-title { margin-top: 8px; }
.about-section-head > p:last-child { margin: 16px 0 0; color: var(--muted); line-height: 1.8; }
.about-samples { padding-top: 22px; }
.about-sample-figure {
  overflow: hidden;
  margin: 0;
  border: 1px solid #c7dbe6;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 24px 60px rgba(8,40,59,0.12);
}
.about-sample-figure img { width: 100%; aspect-ratio: 16/8.7; object-fit: cover; object-position: center; }
.about-sample-figure figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 26px;
}
.about-sample-figure strong { color: var(--ink); font-size: 1.05rem; }
.about-sample-figure span { color: var(--muted); font-size: 0.88rem; text-align: right; }
.about-media-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.about-media-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  overflow: hidden;
  margin: 0;
  border: 1px solid #c7dbe6;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 14px 34px rgba(8,40,59,0.07);
}
.about-media-card-wide { grid-column: span 2; }
.about-media-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; background: #edf4f7; }
.about-media-card-wide img { aspect-ratio: 8/3; }
.about-media-card figcaption { display: grid; gap: 6px; padding: 20px 22px 22px; }
.about-media-card strong { color: var(--ink); font-size: 1.02rem; }
.about-media-card span { color: var(--muted); font-size: 0.84rem; line-height: 1.65; }
.about-direct { padding-top: 24px; }
.about-direct .split-panel img { object-position: center; }
.about-videos { overflow: hidden; }
.about-video-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px; }
.about-video-card {
  overflow: hidden;
  margin: 0;
  border: 1px solid #bdd7e4;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 14px 34px rgba(8,40,59,0.08);
}
.about-video-card video { display: block; width: 100%; aspect-ratio: 16/9; object-fit: contain; background: #061f2d; }
.about-video-card figcaption { padding: 16px 20px; color: var(--ink); font-size: 0.88rem; font-weight: 850; }
.contact-banner { background: var(--blue-soft); }

.site-footer { background: var(--navy); color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.45fr 0.55fr 0.75fr 1fr; gap: 48px; padding: 62px 0 48px; border-bottom: 1px solid rgba(255,255,255,0.13); }
.site-footer .brand-copy small { color: rgba(255,255,255,0.55); }
.footer-brand p { max-width: 430px; margin: 22px 0 0; color: rgba(255,255,255,0.62); font-size: 0.9rem; }
.footer-brand b { display: block; margin-top: 18px; color: #ff735d; font-size: 0.78rem; }
.footer-col h3 { margin: 0; font-size: 0.9rem; }
.footer-col nav { display: flex; flex-direction: column; gap: 11px; margin-top: 18px; color: rgba(255,255,255,0.58); font-size: 0.84rem; }
.footer-col a:hover { color: #fff; }
.footer-contact { display: block; margin-top: 12px; border: 1px solid rgba(255,255,255,0.17); padding: 13px; font-size: 0.8rem; font-weight: 800; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding: 22px 0; color: rgba(255,255,255,0.42); font-size: 0.73rem; }
.whatsapp {
  position: fixed;
  z-index: 60;
  right: 28px;
  bottom: 28px;
  display: flex;
  width: auto;
  min-width: 188px;
  height: 62px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 2px solid #fff;
  border-radius: 999px;
  background: #16a765;
  color: #fff;
  padding: 0 22px 0 13px;
  box-shadow: 0 16px 38px rgba(5,45,66,0.26), 0 0 0 6px rgba(22,167,101,0.14);
  font-size: 0;
  font-weight: 900;
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}
.whatsapp::before {
  content: "✆";
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.16);
  font-size: 1.25rem;
  line-height: 1;
}
.whatsapp::after { content: "WhatsApp 咨询"; font-size: 0.9rem; letter-spacing: 0.01em; white-space: nowrap; }
.whatsapp:hover { background: #0f8f54; transform: translateY(-3px); box-shadow: 0 20px 44px rgba(5,45,66,0.3), 0 0 0 7px rgba(22,167,101,0.17); }
.whatsapp:focus-visible { outline: 3px solid #8edbb8; outline-offset: 4px; }

@media (max-width: 1040px) {
  .site-nav {
    position: fixed;
    inset: 121px 18px auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    border: 1px solid var(--line);
    background: #fff;
    padding: 10px;
    box-shadow: var(--shadow);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 15px; border-bottom: 1px solid var(--line); }
  .site-nav a:last-child { border-bottom: 0; }
  .site-nav a::after { display: none; }
  .menu-toggle { display: inline-grid; flex: 0 0 44px; place-items: center; margin-left: auto; border-color: var(--ink); background: var(--ink); color: #fff; }
  .decision-grid { grid-template-columns: repeat(2,1fr); }
  .stats { grid-template-columns: repeat(3,1fr); gap: 22px 0; }
  .footer-grid { grid-template-columns: repeat(3,1fr); }
  .footer-brand { grid-column: 1 / -1; }
  .catalog-grid, .case-study-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .about-media-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .product-detail-grid { gap: 42px; }
  .product-detail-heading { grid-template-columns: 1fr; gap: 18px; }
  .product-process-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 26px 18px; }
}

@media (max-width: 760px) {
  :root { --container: min(calc(100% - 28px), 650px); }
  .section { padding: 66px 0; }
  .trust-grid { grid-template-columns: repeat(2,1fr); }
  .trust-item { min-height: 38px; font-size: 0.75rem; }
  .trust-item:nth-child(n+3) { border-top: 1px solid var(--line); }
  .header-row { position: relative; min-height: 68px; gap: 12px; padding-right: 58px; }
  .brand-mark { width: 40px; height: 40px; }
  .brand-copy strong { font-size: 0.78rem; }
  .brand-copy small { font-size: 0.54rem; }
  .language-pill { display: none; }
  .header-actions .button { display: none; }
  .site-nav { inset: 150px 14px auto; }
  .header-row { padding-right: 112px; }
  .header-actions { position: absolute; z-index: 5; top: 12px; right: 0; display: flex; width: auto; height: 44px; align-items: center; gap: 8px; }
  .language-switcher-toggle { min-width: 54px; min-height: 44px; justify-content: center; padding: 0 10px; }
  .language-switcher-name { display: none; }
  .language-switcher-caret { margin-left: 0; }
  .language-menu { top: 54px; right: 0; width: min(250px, calc(100vw - 28px)); }
  .menu-toggle { position: static; display: grid !important; width: 44px; height: 44px; }
  .hero { min-height: 700px; }
  .hero-media { inset: 0; }
  .hero-media img { object-position: 52% center; filter: saturate(0.78) contrast(1.02) brightness(0.78); }
  .hero-media::after {
    background:
      linear-gradient(180deg, rgba(5,31,44,0.84) 0%, rgba(5,31,44,0.7) 52%, rgba(5,31,44,0.48) 100%),
      linear-gradient(90deg, rgba(5,31,44,0.22), rgba(5,31,44,0.12));
  }
  .hero-inner { min-height: 700px; align-items: flex-start; }
  .hero-content { padding-top: 72px; max-width: 100%; }
  .hero h1 { font-size: clamp(2.7rem, 12.5vw, 3.35rem); line-height: 0.98; }
  .mobile-break { display: block; }
  .hero-note { font-size: 0.94rem; }
  .hero-actions { flex-direction: column; align-items: stretch; max-width: 320px; margin-inline: auto; }
  .product-grid, .benefit-grid, .contact-grid { grid-template-columns: 1fr; }
  .product-card { grid-template-columns: 108px 1fr; min-height: 150px; gap: 16px; padding: 14px; }
  .product-image { height: 100px; }
  .product-card h3 { font-size: 1.16rem; }
  .product-card p { font-size: 0.81rem; }
  .benefit-grid { gap: 24px; }
  .source-offer { grid-template-columns: 1fr; gap: 18px; padding: 26px; text-align: center; }
  .source-offer img { margin-inline: auto; }
  .step-strip { grid-template-columns: repeat(2,1fr); }
  .step:nth-child(2) { border-right: 0; }
  .step:nth-child(n+3) { border-top: 1px solid var(--line); }
  .decision-grid { grid-template-columns: 1fr; }
  .decision-card { min-height: 170px; }
  .case-grid { grid-template-columns: 1fr; }
  .case-card img { aspect-ratio: 4 / 5; }
  .stats { grid-template-columns: 1fr; padding: 24px; }
  .about-copy p { font-size: 0.96rem; }
  .contact-card { flex-direction: column; align-items: flex-start; gap: 4px; text-align: left; }
  .whatsapp { right: 16px; bottom: 16px; width: 58px; min-width: 58px; height: 58px; padding: 0; }
  .whatsapp::before { width: 36px; height: 36px; }
  .whatsapp::after { display: none; }
  .page-hero-media { inset: 55% 0 0; }
  .process-hero .page-hero-media { inset: 55% 0 0; }
  .about-hero .page-hero-media { inset: 55% 0 0; }
  .page-hero::after { background: linear-gradient(180deg, rgba(5,45,66,1) 0%, rgba(5,45,66,0.94) 58%, rgba(5,45,66,0.3) 100%); }
  .process-hero::after { background: linear-gradient(180deg, rgba(5,45,66,1) 0%, rgba(5,45,66,0.96) 54%, rgba(5,45,66,0.22) 100%); }
  .page-hero-inner { min-height: 660px; align-items: flex-start; padding-top: 64px; }
  .page-hero-copy { text-align: center; }
  .page-hero-copy > p:last-of-type { margin-inline: auto; }
  .page-actions { justify-content: center; }
  .subnav { top: 69px; }
  .lead-grid, .split-panel { grid-template-columns: 1fr; gap: 36px; }
  .about-media-grid, .about-video-grid { grid-template-columns: 1fr; }
  .about-media-card-wide { grid-column: auto; }
  .about-media-card-wide img { aspect-ratio: 4/3; }
  .about-sample-figure img { aspect-ratio: 4/3; }
  .about-sample-figure figcaption { align-items: flex-start; flex-direction: column; }
  .about-sample-figure span { text-align: left; }
  .lead-copy { position: static; text-align: center; }
  .info-grid, .catalog-grid, .case-study-grid { grid-template-columns: 1fr; }
  .product-detail-hero { padding: 52px 0 68px; }
  .product-detail-grid { grid-template-columns: 1fr; gap: 48px; }
  .product-detail-copy { text-align: center; }
  .product-detail-copy .breadcrumb { margin-bottom: 22px; }
  .product-detail-lead { margin-inline: auto; font-size: 0.98rem; }
  .product-tags, .product-detail-actions { justify-content: center; }
  .product-detail-media { padding: 24px; box-shadow: 13px 13px 0 #dff1fa; }
  .product-detail-section { padding: 66px 0; }
  .product-detail-heading { text-align: center; }
  .product-option-grid, .product-use-grid { grid-template-columns: 1fr; }
  .product-option-card { min-height: 0; }
  .product-process-grid { grid-template-columns: 1fr; }
  .case-editorial-hero { padding: 52px 0 30px; }
  .case-editorial-gallery { grid-template-columns: 1fr; gap: 14px; }
  .case-editorial-gallery img { aspect-ratio: 4/3; }
  .case-editorial-body { padding-top: 14px; padding-bottom: 66px; }
  .case-editorial-article { margin-top: 42px; }
  .case-editorial-article p { font-size: 0.96rem; line-height: 1.85; }
  .case-editorial-photo { margin-top: 44px; }
  .case-editorial-photo img { aspect-ratio: 4/3; }
  .timeline-item { grid-template-columns: 58px 1fr; gap: 12px; }
  .timeline-marker::before { width: 44px; height: 44px; font-size: 0.78rem; }
  .timeline-marker::after { top: 50px; }
  .split-panel img { min-height: 300px; }
  .split-copy { padding: 36px 28px; }
  .quote-panel { grid-template-columns: 1fr; padding: 34px 28px; text-align: center; }
  .quote-panel .button { justify-self: center; }
  .footer-grid { grid-template-columns: repeat(2,1fr); gap: 34px; }
  .footer-brand, .footer-col:last-child { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
}

@media (max-width: 440px) {
  .product-card { grid-template-columns: 88px 1fr; }
  .product-image { height: 88px; }
  .step-strip { grid-template-columns: 1fr; }
  .step { border-right: 0; border-top: 1px solid var(--line); }
  .step:first-child { border-top: 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand, .footer-col:last-child { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}