:root {
  color-scheme: light;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --paper: #f5f5f7;
  --panel: #ffffff;
  --line: #d2d2d7;
  --soft: #fbfbfd;
  --accent: #0071e3;
  --accent-2: #34c759;
  --dark: #101014;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html,
body,
body * {
  user-select: text;
  -webkit-user-select: text;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.site-header {
  align-items: center;
  backdrop-filter: saturate(180%) blur(20px);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid rgba(210, 210, 215, 0.78);
  display: flex;
  gap: 24px;
  justify-content: space-between;
  min-height: 52px;
  padding: 0 6vw;
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand { align-items: center; display: flex; gap: 10px; min-width: max-content; }
.logo-mark {
  align-items: center;
  background: #1d1d1f;
  border-radius: 9px;
  color: #fff;
  display: grid;
  font-size: 14px;
  font-weight: 700;
  height: 34px;
  place-items: center;
  width: 34px;
}
.brand-stack { display: inline-block; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 17px; font-weight: 600; }
.brand-text { display: inline-block; }
.brand small { color: var(--muted); font-size: 12px; font-weight: 600; }
.site-header nav { align-items: center; display: flex; flex-wrap: wrap; gap: 22px; justify-content: flex-end; }
.site-header nav a { color: #1d1d1f; font-size: 13px; font-weight: 500; }
.site-header nav .return-group-link { color: #1d1d1f; }
.site-header nav a:hover { color: var(--accent); }
.header-actions { align-items: center; display: flex; gap: 12px; }
.header-phone {
  align-items: center;
  background: #f5f5f7;
  border-radius: 999px;
  color: #1d1d1f;
  display: inline-flex;
  gap: 8px;
  padding: 8px 12px;
  white-space: nowrap;
}
.header-phone span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}
.header-phone strong {
  font-size: 14px;
  font-weight: 700;
}
.hero {
  align-items: center;
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  min-height: calc(82vh - 58px);
  padding: 56px 5vw 34px;
}
.hero-copy { max-width: 820px; }
.hero h1 { font-size: 36px; line-height: 1.18; max-width: 18em; }
.kicker {
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  margin: 0 0 12px;
}
h1, h2, h3 { line-height: 1.12; margin: 0; }
h1 { font-size: 42px; letter-spacing: 0; max-width: 18em; }
h2 { font-size: 32px; letter-spacing: 0; }
h3 { font-size: 19px; letter-spacing: 0; }
.lead, .section-heading p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.62;
  margin: 14px 0 0;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.button {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 999px;
  display: inline-flex;
  font-size: 15px;
  font-weight: 750;
  min-height: 44px;
  padding: 10px 18px;
}
.button.primary { background: var(--accent); color: #fff; }
.button.subtle { background: rgba(0, 113, 227, 0.08); color: var(--accent); }
.hero-gallery {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr 1fr;
}
.hero-gallery figure {
  aspect-ratio: 1.08;
  background: linear-gradient(180deg, #fff, #f1f1f4);
  border: 1px solid rgba(210, 210, 215, 0.72);
  border-radius: 8px;
  display: grid;
  gap: 10px;
  grid-template-rows: minmax(0, 1fr) auto;
  margin: 0;
  overflow: hidden;
  padding: 16px;
}
.hero-gallery img {
  filter: drop-shadow(0 22px 30px rgba(29, 29, 31, 0.12));
  height: 100%;
  margin: auto;
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
  width: 100%;
}
.hero-gallery figcaption {
  border-top: 1px solid rgba(210, 210, 215, 0.72);
  display: grid;
  gap: 4px;
  padding-top: 10px;
}
.hero-gallery figcaption span {
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
}
.hero-gallery figcaption strong {
  color: var(--ink);
  font-size: 15px;
  line-height: 1.25;
}
.quick-strip {
  background: #fff;
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  padding: 12px 5vw;
}
.quick-strip a {
  background: var(--paper);
  border-radius: 999px;
  color: #303035;
  display: inline-flex;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 12px;
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}
.quick-strip a:hover {
  background: #e9f2ff;
  color: var(--accent);
  transform: translateY(-1px);
}
.section { padding: 52px 5vw; }
.section-heading { margin-bottom: 22px; max-width: 860px; }
.section-heading.wide { max-width: 1050px; }
.section-heading.compact h2 { font-size: 28px; }
.section-heading.compact p { font-size: 15px; max-width: 760px; }
.product-groups {
  display: grid;
  gap: 20px;
}
.product-family {
  background: #fff;
  border: 1px solid rgba(210, 210, 215, 0.78);
  border-radius: 8px;
  overflow: hidden;
}
.family-heading {
  align-items: end;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 18px;
  justify-content: space-between;
  padding: 20px 22px;
}
.family-heading h3 {
  font-size: 24px;
  line-height: 1.18;
}
.family-heading p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.62;
  margin: 10px 0 0;
  max-width: 780px;
}
.family-heading > span {
  background: var(--paper);
  border-radius: 999px;
  color: var(--muted);
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 800;
  padding: 8px 12px;
}
.family-products { padding: 14px; }
.product-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.product-card {
  background: var(--panel);
  border: 1px solid rgba(210, 210, 215, 0.78);
  border-radius: 8px;
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 410px;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.product-card:hover {
  border-color: rgba(0, 113, 227, 0.3);
  box-shadow: 0 18px 42px rgba(29, 29, 31, 0.1);
  transform: translateY(-3px);
}
.product-card figure {
  align-items: center;
  aspect-ratio: 1.25;
  background: #f5f5f7;
  display: grid;
  margin: 0;
  padding: 18px;
}
.product-card img { margin: auto; max-height: 100%; object-fit: contain; }
.product-card img,
.hero-gallery img,
.product-hero-image img {
  -webkit-user-drag: none;
}
.card-copy { padding: 18px; }
.card-eyebrow, .mini-product span, .application-grid span, .news-list span, .contact-card span {
  color: var(--muted);
  display: block;
  font-size: 12px;
  font-weight: 750;
  margin-bottom: 8px;
}
.card-copy h3 { font-size: 18px; line-height: 1.25; }
.card-copy strong { color: var(--accent); display: block; font-size: 13px; margin-bottom: 8px; }
.card-copy p, .application-grid p, .process p, .side-panel p, .footer, .contact-section p, .news-item p {
  color: var(--muted);
  line-height: 1.62;
}
.product-band { background: #fff; }
.mini-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}
.mini-product {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 8px;
  padding: 16px;
}
.mini-product img {
  aspect-ratio: 1.4;
  background: #fff;
  border-radius: 8px;
  object-fit: contain;
  padding: 8px;
  width: 100%;
}
.split-section { background: #101014; color: #f5f5f7; }
.split-section .kicker { color: #7cc3ff; }
.split-section .section-heading p, .split-section .application-grid p { color: #c6c6cb; }
.application-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.application-grid article, .process div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}
.split-section .application-grid article {
  background: #1c1c22;
  border-color: #33333a;
}
.service-section { background: #fbfbfd; }
.process {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.process span {
  align-items: center;
  background: var(--accent);
  border-radius: 999px;
  color: #fff;
  display: grid;
  font-weight: 800;
  height: 34px;
  margin-bottom: 14px;
  place-items: center;
  width: 34px;
}
.news-section { background: #fff; }
.news-list {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.news-item {
  background: var(--paper);
  border-radius: 8px;
  min-height: 146px;
  padding: 16px;
}
.news-item span {
  color: var(--accent);
  display: block;
  font-weight: 900;
  margin-bottom: 10px;
}
.news-item ul {
  color: var(--muted);
  display: grid;
  gap: 4px;
  margin: 10px 0 0;
  padding-left: 18px;
}
.news-item li {
  line-height: 1.48;
}
.text-link {
  color: var(--accent);
  display: inline-flex;
  font-size: 14px;
  font-weight: 700;
  margin-top: 12px;
}
.contact-section {
  align-items: start;
  background: #111111;
  color: #fff;
  display: grid;
  gap: 34px;
  grid-template-columns: minmax(260px, 0.42fr) minmax(620px, 1fr);
}
.contact-section .kicker,
.contact-section p {
  color: #b8dfd2;
}
.contact-panel {
  display: grid;
  gap: 12px;
}
.contact-phone-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 0.9fr 1.2fr 1.1fr;
}
.contact-address-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.contact-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  min-width: 0;
  padding: 15px 16px;
}
.contact-card-address {
  background: rgba(255, 255, 255, 0.06);
  padding: 14px 16px;
}
.contact-card span {
  color: #b8dfd2;
  font-size: 12px;
  font-weight: 600;
}
.contact-card strong {
  color: #fff;
  display: block;
  font-size: clamp(22px, 2.1vw, 30px);
  font-weight: 600;
  line-height: 1.2;
  overflow-wrap: anywhere;
}
.contact-card-address strong {
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(15px, 1vw, 18px);
  line-height: 1.55;
}
.footer {
  align-items: center;
  background: #fff;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  padding: 24px 5vw;
}
.footer a { color: var(--accent); font-weight: 700; }
.product-hero {
  align-items: center;
  display: grid;
  gap: 26px;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1fr);
  padding: 46px 5vw 30px;
}
.product-hero h1 { font-size: 36px; max-width: 14em; }
.product-hero .lead { font-size: 15px; }
.breadcrumb { color: var(--accent); display: inline-block; font-weight: 750; margin-bottom: 10px; }
.product-category-meta {
  align-items: baseline;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}
.product-category-meta span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}
.product-category-meta strong {
  color: #1d1d1f;
  font-size: 16px;
  font-weight: 700;
}
.badge-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.badge-row span {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #303035;
  font-size: 13px;
  font-weight: 750;
  padding: 8px 12px;
}
.product-hero-image {
  align-items: center;
  aspect-ratio: 1.2;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  margin: 0;
  padding: 24px;
}
.product-hero-image img { margin: auto; max-height: 100%; object-fit: contain; }
.detail-section {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.36fr);
}
.parameter-table {
  background: #fff;
  border: 1px solid var(--line);
  border-collapse: collapse;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.45;
  overflow: hidden;
  width: 100%;
}
.parameter-table th, .parameter-table td {
  border-bottom: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}
.parameter-table tr:last-child th, .parameter-table tr:last-child td { border-bottom: 0; }
.parameter-table th {
  background: #fbfbfd;
  color: #303035;
  font-size: 12px;
  line-height: 1.4;
  width: 24%;
}
.acrylic-detail {
  display: grid;
  gap: 16px;
}
.spec-highlight-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.spec-highlight-grid article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 98px;
  padding: 16px;
}
.spec-highlight-grid span {
  color: var(--muted);
  display: block;
  font-size: 12px;
  font-weight: 760;
  margin-bottom: 10px;
}
.spec-highlight-grid strong {
  color: var(--ink);
  display: block;
  font-size: 17px;
  line-height: 1.45;
}
.model-table-wrap {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow-x: auto;
}
.model-table-heading {
  align-items: end;
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 18px;
  justify-content: space-between;
  padding: 18px 20px 14px;
}
.model-table-heading h3 {
  font-size: 18px;
  letter-spacing: 0;
  line-height: 1.18;
  margin: 5px 0 0;
}
.model-table-heading > span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  white-space: nowrap;
}
.model-table {
  border-collapse: collapse;
  font-size: 13px;
  line-height: 1.35;
  min-width: 820px;
  width: 100%;
}
.model-table.b-model-table {
  min-width: 860px;
}
.model-table th,
.model-table td {
  border-bottom: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
  vertical-align: middle;
}
.model-table thead th {
  background: #fbfbfd;
  color: #303035;
  font-size: 12px;
  font-weight: 800;
}
.model-table tbody th {
  color: var(--accent);
  font-weight: 850;
  white-space: nowrap;
}
.model-table tbody tr:nth-child(even) {
  background: #fafafa;
}
.model-table tbody tr:last-child th,
.model-table tbody tr:last-child td {
  border-bottom: 0;
}
.inline-note-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.inline-note-grid p {
  background: #f5f7fb;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #4a4a51;
  font-weight: 620;
  margin: 0;
  padding: 18px 20px;
}
.article-hero {
  padding: 34px 5vw 18px;
}
.article-hero h1 {
  font-size: 32px;
  line-height: 1.15;
  max-width: 18em;
}
.article-hero .lead {
  font-size: 15px;
  max-width: 980px;
}
.article-layout {
  align-items: start;
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.34fr);
}
.article-body,
.article-aside {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.article-body {
  padding: 24px;
}
.article-body h2 {
  font-size: 24px;
  line-height: 1.18;
  margin-top: 28px;
}
.article-body h2:first-child {
  margin-top: 0;
}
.article-body p,
.article-body li {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}
.article-body p + h2,
.article-body table + h2,
.article-body ul + h2,
.article-body ol + h2 {
  margin-top: 24px;
}
.article-body table {
  margin-top: 14px;
}
.article-body ol,
.article-body ul {
  margin: 14px 0 0 22px;
}
.article-aside {
  align-self: start;
  padding: 22px;
  position: sticky;
  top: 82px;
}
.article-aside h3 {
  font-size: 18px;
}
.check-list {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding-left: 18px;
}
.check-list li {
  line-height: 1.5;
}
.side-panel {
  align-self: start;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  position: sticky;
  top: 82px;
}
.side-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.related-links {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 6px;
  margin-top: 14px;
  padding-top: 14px;
}
.related-links span { color: var(--muted); font-size: 12px; font-weight: 800; }
.related-links a { color: var(--accent); font-weight: 750; }
@media (max-width: 980px) {
  .hero, .product-hero, .detail-section, .contact-section {
    grid-template-columns: 1fr;
  }
  .product-grid, .news-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .application-grid, .process { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mini-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .contact-phone-grid,
  .contact-address-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-layout { grid-template-columns: 1fr; }
  .article-aside { position: static; }
}
@media (max-width: 640px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: 12px; padding-bottom: 16px; padding-top: 16px; position: static; }
  .site-header nav { gap: 12px; justify-content: flex-start; width: 100%; }
  .header-actions { align-items: flex-start; flex-wrap: wrap; width: 100%; }
  .header-phone { justify-content: center; }
  .hero { min-height: auto; padding-top: 30px; padding-bottom: 20px; }
  h1 { font-size: 34px; }
  h2 { font-size: 28px; }
  h3 { font-size: 18px; }
  .lead, .section-heading p { font-size: 15px; }
  .product-hero h1 { font-size: 30px; }
  .product-hero .lead { font-size: 14px; }
  .hero-gallery, .product-grid, .application-grid, .process, .news-list, .contact-phone-grid, .contact-address-grid, .mini-grid {
    grid-template-columns: 1fr;
  }
  .article-hero { padding-top: 22px; }
  .article-hero h1 { font-size: 28px; }
  .article-body,
  .article-aside {
    padding: 18px;
  }
  .article-body h2 {
    font-size: 21px;
    margin-top: 22px;
  }
  .article-body p,
  .article-body li,
  .article-aside p,
  .check-list li {
    font-size: 14px;
  }
  .article-body ol,
  .article-body ul {
    margin-left: 18px;
  }
  .spec-highlight-grid,
  .inline-note-grid {
    grid-template-columns: 1fr;
  }
  .model-table-heading {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 18px 14px;
  }
  .model-table-heading h3 {
    font-size: 20px;
  }
  .model-table {
    font-size: 12px;
    min-width: 760px;
  }
  .model-table.b-model-table {
    min-width: 820px;
  }
  .model-table th,
  .model-table td {
    padding: 10px 12px;
  }
  .parameter-table {
    font-size: 12px;
  }
  .parameter-table th,
  .parameter-table td {
    padding: 10px 12px;
  }
  .parameter-table th {
    width: 30%;
  }
  .family-heading {
    align-items: flex-start;
    flex-direction: column;
  }
  .section { padding: 42px 5vw; }
  .family-heading h3 { font-size: 23px; }
  .card-copy h3 { font-size: 18px; }
  .product-card { min-height: auto; }
  .news-item { min-height: auto; padding: 14px; }
}