:root {
  --text: #34495e;
  --heading: #1f3042;
  --muted: #7d8fa0;
  --line: #dfe7ee;
  --page: #f5f8fa;
  --panel: #ffffff;
  --cyan: #00a7c4;
  --blue: #14698c;
  --orange: #ff9d00;
  --orange-soft: #fff7ea;
  --footer: #142238;
  --shadow: 0 8px 24px rgba(35, 62, 82, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--page);
  font:
    14px/1.8 "Noto Sans SC",
    "Microsoft YaHei",
    sans-serif;
}

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

button,
input {
  font: inherit;
}

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

.shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.breadcrumb {
  height: 56px;
  display: flex;
  align-items: center;
  gap: 7px;
  color: #72869a;
  font-size: 12px;
}

.breadcrumb svg {
  width: 13px;
}

.breadcrumb a:hover {
  color: var(--cyan);
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 18px;
  align-items: start;
  padding-bottom: 64px;
}

.main-column {
  min-width: 0;
}

.product-hero,
.content-section,
.supplier-card,
.side-section {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: white;
  box-shadow: var(--shadow);
}

.product-hero,
.content-section {
  margin-bottom: 18px;
}

.hero-grid {
  display: grid;
  padding: 17px 30px; 
}

.image-stage {
  width: 100%;
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  border: 1px solid #e1eaf1;
  border-radius: 5px;
  background: #f4f8fb;
}

.image-stage img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
}

.product-summary {
  padding: 20px 20px 18px 14px;
}

.product-summary h1 {
  margin: 0 0 4px;
  color: var(--heading);
  font-size: 25px;
  line-height: 1.35;
}

.meta-line {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #8b9baa;
  font-size: 11px;
}

.meta-line svg {
  width: 14px;
}

.price-row {
  min-height: 61px;
  margin: 12px 0 8px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 14px;
  border: 1px solid #ffd8a0;
  border-radius: 5px;
  background: var(--orange-soft);
}

.price-row span {
  color: #7e8c99;
  font-size: 11px;
}

.price-row strong {
  color: #f17d00;
  font-size: 25px;
}

.price-row small {
  margin-left: auto;
  color: #728496;
  font-size: 10px;
}

.product-facts {
  margin: 0;
}

.product-facts div {
  display: grid;
  grid-template-columns: 72px 1fr;
  padding: 8px 0;
  border-bottom: 1px dashed #dfe8ef;
}

.product-facts dt {
  color: #75889a;
}

.product-facts dd {
  margin: 0;
  color: #34495e;
  font-weight: 600;
}

.hero-actions {
  margin-top: 16px;
  display: flex;
  gap: 9px;
}

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 22px;
  font-weight: 700;
}

.button svg {
  width: 17px;
}

.button.primary {
  color: #17283a;
  background: var(--orange);
}

.button.primary:hover {
  background: #ed9200;
}

.button.secondary {
  color: #34495e;
  border-color: #dce6ee;
  background: white;
}

.button.secondary:hover {
  color: var(--blue);
  border-color: #b8cedd;
}

.button.full {
  width: 100%;
}

.content-section {
  padding: 25px 24px 28px;
}

.section-heading {
  margin-bottom: 20px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 13px;
  border-bottom: 1px solid #edf2f5;
}

.section-kicker {
  display: none;
}

.section-heading h2 {
  position: relative;
  margin: 0;
  padding-left: 13px;
  color: var(--heading);
  font-size: 19px;
}

.section-heading h2::before {
  content: "";
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 0;
  width: 3px;
  background: var(--orange);
}

.section-note {
  color: #91a0ac;
  font-size: 10px;
}

.spec-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.spec-table th,
.spec-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

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

.spec-table th {
  width: 150px;
  color: #617487;
  background: #f5f8fa;
  font-size: 12px;
  font-weight: 600;
}

.spec-table td {
  color: var(--heading);
  background: white;
  font-size: 13px;
  font-weight: 600;
}

.spec-table tr:hover th {
  color: var(--cyan);
}

.spec-table tr:hover td {
  background: #fbfdfe;
}

.article p {
  margin: 0 0 16px;
  color: #51667a;
  text-align: justify;
}

.article .article-intro {
  color: #41566a;
  line-height: 1.95;
}

.article h3 {
  margin: 27px 0 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--heading);
  font-size: 16px;
}

.article h3 span {
  min-width: 31px;
  color: var(--orange);
  font-size: 11px;
}

.check-list {
  margin: 6px 0 24px;
  padding: 0;
  list-style: none;
}

.check-list li {
  display: flex;
  gap: 9px;
  margin: 9px 0;
  color: #536a7d;
}

.check-list svg {
  width: 16px;
  min-width: 16px;
  margin-top: 5px;
  color: var(--orange);
}

.contact-band {
  margin-top: 25px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 22px;
  border: 1px solid #dce8ef;
  background: #f7fbfd;
}

.contact-band div {
  display: flex;
  flex-direction: column;
}

.contact-band div span {
  color: var(--cyan);
  font-size: 10px;
}

.contact-band strong {
  color: var(--heading);
  font-size: 14px;
}

.contact-band small {
  color: #8495a3;
}

.contact-band a {
  display: flex;
  align-items: center;
  gap: 7px;
  color: #f17d00;
  font-size: 18px;
  font-weight: 800;
}

.contact-band a svg {
  width: 19px;
}

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin-bottom: 14px;
  border: 1px solid var(--line);
  background: var(--line);
}

.post-nav a {
  min-width: 0;
  padding: 16px 18px;
  background: white;
}

.post-nav span {
  display: flex;
  align-items: center;
  gap: 5px;
  color: #8798a5;
  font-size: 10px;
}

.post-nav span svg {
  width: 14px;
}

.post-nav strong {
  display: block;
  margin-top: 3px;
  overflow: hidden;
  color: #42586c;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
}

.post-nav .next {
  text-align: right;
}

.post-nav .next span {
  justify-content: flex-end;
}

.disclaimer {
  margin: 0 0 14px;
  padding: 18px 20px;
  color: #738697;
  border: 1px solid var(--line);
  background: white;
  font-size: 11px;
  line-height: 1.9;
}

.disclaimer b {
  color: #43586b;
}

.disclaimer a {
  color: var(--cyan);
}

.sidebar {
  position: sticky;
  top: 16px;
}

.supplier-card,
.side-section {
  margin-bottom: 18px;
  overflow: hidden;
}

.supplier-title {
  height: 52px;
  display: flex;
  align-items: center;
  padding: 0 18px;
  color: var(--cyan);
  border-bottom: 1px solid var(--line);
  font-size: 17px;
  font-weight: 800;
}

.supplier-body {
  padding: 17px 18px 18px;
}

.supplier-body h2 {
  margin: 0 0 12px;
  color: var(--heading);
  font-size: 16px;
}

.supplier-body p {
  display: grid;
  grid-template-columns: 15px 40px minmax(0, 1fr);
  align-items: start;
  column-gap: 7px;
  margin: 8px 0;
  color: #657a8c;
  font-size: 12px;
}

.supplier-body p svg {
  width: 15px;
  min-width: 15px;
  color: var(--cyan);
}

.supplier-body p b {
  color: #657a8c;
  font-weight: 400;
  white-space: nowrap;
}

.supplier-body p span,
.supplier-body p a {
  min-width: 0;
}

.supplier-body p a {
  color: #f17d00;
  font-weight: 700;
}

.supplier-phone {
  margin: 14px 0;
  display: flex;
  align-items: center;
  gap: 7px;
  color: #f17d00;
  font-size: 21px;
  font-weight: 800;
}

.supplier-phone svg {
  width: 18px;
}

.side-section {
  padding: 0 18px 14px;
}

.side-title {
  height: 52px;
  margin-bottom: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.side-title h2 {
  margin: 0;
  color: var(--cyan);
  font-size: 17px;
}

.side-title>a {
  display: flex;
  align-items: center;
  color: #8495a3;
  font-size: 10px;
}

.side-title>a svg {
  width: 13px;
}

.link-list a {
  min-height: 45px;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) 13px;
  align-items: center;
  border-bottom: 1px dashed #dfe7ed;
}

.link-list a:last-child {
  border-bottom: 0;
}

.link-list a>span {
  color: #9aa9b5;
  font-size: 9px;
}

.link-list p {
  margin: 0;
  overflow: hidden;
  color: #4c6275;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 11px;
}

.link-list svg {
  width: 12px;
  color: #bac5cc;
}

.link-list a:hover p,
.link-list a:hover svg {
  color: var(--cyan);
}

.news-list a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  padding: 11px 0;
  border-bottom: 1px dashed #dfe7ed;
}

.news-list a:last-child {
  border-bottom: 0;
}

.news-list strong {
  color: #4c6275;
  font-size: 11px;
  font-weight: 500;
  line-height: 1.6;
}

.news-list time {
  color: #9caab5;
  font-size: 9px;
}

.news-list a:hover strong {
  color: var(--cyan);
}

/* Visual signature: industrial catalogue layout */
.content-grid {
  gap: 24px;
}

.product-hero {
  position: relative;
  overflow: visible;
  border-top: 4px solid var(--cyan);
  box-shadow: 8px 8px 0 #e8f1f5;
}

.product-hero::after {
  content: "";
  position: absolute;
  top: -4px;
  right: 0;
  width: 74px;
  height: 4px;
  background: var(--orange);
}

.hero-grid {
  min-height: 402px;
}

.product-visual {
  position: relative;
}

.product-visual::before {
  content: "";
  position: absolute;
  z-index: 2;
  top: 12px;
  left: 12px;
  width: 46px;
  height: 46px;
  border-top: 3px solid var(--orange);
  border-left: 3px solid var(--orange);
  pointer-events: none;
}

.image-stage {
  border: 0;
  border-radius: 0;
  background: #edf5f7;
}

.product-visual::after {
  content: "";
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: 34px;
  height: 34px;
  border-right: 3px solid var(--cyan);
  border-bottom: 3px solid var(--cyan);
}

.product-summary {
  position: relative;
  margin-top: 25px;
  padding: 10px 0;
}

.product-summary h1 {
  max-width: none;
  margin-bottom: 10px;
  font-size: 25px;
}

.product-summary h1::after {
  content: "";
  display: block;
  width: 42px;
  height: 3px;
  margin-top: 11px;
  background: var(--cyan);
}

.price-row {
  border: 0;
  border-left: 4px solid var(--orange);
  border-radius: 0;
  box-shadow: inset 0 -1px #ffdfae;
}

.price-row strong {
  font-size: 28px;
}

.product-facts div {
  grid-template-columns: 110px 1fr;
  gap: 15px;
}

.product-facts dt {
  position: relative;
  align-self: start;
  text-align: right;
  white-space: nowrap;
  padding-left: 12px;
}


.button.primary {
  box-shadow: 4px 4px 0 #ffe0a6;
}

.button.secondary {
  border-radius: 4px;
}

.content-section {
  position: relative;
  overflow: hidden;
  padding: 30px 30px 32px;
}

.content-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 84px;
  height: 4px;
  background: var(--cyan);
}

.content-section::after {
  content: "";
  position: absolute;
  top: 0;
  left: 84px;
  width: 28px;
  height: 4px;
  background: var(--orange);
}

.section-heading {
  align-items: center;
  padding-bottom: 16px;
}

.section-heading>div {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 12px;
  align-items: center;
}

.section-kicker {
  display: block;
  grid-column: 2;
  color: var(--cyan);
  font-size: 9px;
  font-weight: 800;
  line-height: 1.2;
}

.section-heading h2 {
  grid-row: 1 / 3;
  padding: 0;
  font-size: 21px;
}

.section-heading h2::before {
  position: static;
  display: block;
  width: 30px;
  height: 3px;
  margin-bottom: 7px;
  background: var(--orange);
}

.section-note {
  padding: 4px 9px;
  border: 1px solid #e2eaf0;
  background: #f8fafb;
}

.article .article-intro {
  margin-bottom: 28px;
  padding: 17px 19px;
  border-left: 4px solid var(--cyan);
  background: #f6fafc;
}

.article h3 {
  position: relative;
  padding-bottom: 9px;
  border-bottom: 1px dashed #dbe5eb;
}

.article h3 span {
  display: grid;
  place-items: center;
  width: 33px;
  height: 25px;
  color: white;
  background: var(--blue);
}

.contact-band {
  border-left: 4px solid var(--orange);
}

.sidebar {
  top: 18px;
}

.supplier-card,
.side-section {
  position: relative;
  border: 0;
  border-left: 4px solid var(--cyan);
  box-shadow: 5px 5px 0 #e8f1f5;
}

.supplier-card::after,
.side-section::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 36px;
  height: 3px;
  background: var(--orange);
}

.supplier-title,
.side-title {
  position: relative;
}

.supplier-title::before,
.side-title h2::before {
  content: "";
  width: 7px;
  height: 7px;
  margin-right: 9px;
  display: inline-block;
  background: var(--orange);
}

.side-title h2 {
  display: flex;
  align-items: center;
}

.link-list a>span {
  width: 19px;
  height: 19px;
  display: grid;
  place-items: center;
  color: var(--blue);
  background: #edf5f7;
}

.link-list a:hover>span {
  color: white;
  background: var(--cyan);
}

.supplier-phone {
  padding: 10px 12px;
  background: var(--orange-soft);
}

.disclaimer {
  border-left: 4px solid #b8c7d1;
}

@media (max-width: 980px) {
  .brand-tagline {
    display: none;
  }

  .content-grid {
    grid-template-columns: minmax(0, 1fr) 280px;
  }

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

  .product-visual {
    padding: 16px 16px 5px;
  }

  .product-summary {
    padding: 18px 20px 21px;
  }

  .price-row {
    flex-wrap: wrap;
  }

  .price-row small {
    width: 100%;
    margin-left: 0;
  }
}

@media (max-width: 760px) {
  .shell {
    width: min(100% - 26px, 1180px);
  }

  .utility-bar,
  .search {
    display: none;
  }

  .brand-row {
    height: 66px;
  }

  .brand-mark {
    width: 35px;
    height: 35px;
  }

  .brand-name {
    font-size: 20px;
  }

  .menu-button {
    margin-left: auto;
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    color: var(--heading);
    border: 1px solid var(--line);
    background: white;
  }

  .main-nav {
    position: absolute;
    z-index: 20;
    top: 66px;
    right: 0;
    left: 0;
    display: none;
    box-shadow: var(--shadow);
  }

  .main-nav.open {
    display: block;
  }

  .nav-inner {
    width: 100%;
    height: auto;
    display: grid;
    gap: 0;
  }

  .nav-inner a {
    min-height: 47px;
    border-top: 1px solid #edf2f5;
  }

  .nav-inner a.active::after {
    top: 10px;
    right: auto;
    bottom: 10px;
    left: 0;
    width: 3px;
    height: auto;
  }

  .breadcrumb {
    height: 50px;
    overflow: hidden;
    white-space: nowrap;
  }

  .breadcrumb span {
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .content-grid {
    display: flex;
    flex-direction: column;
    padding-bottom: 38px;
  }

  .main-column,
  .sidebar {
    width: 100%;
  }

  .product-hero,
  .content-section,
  .supplier-card,
  .side-section {
    margin-bottom: 15px;
  }

  .product-summary h1 {
    font-size: 23px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .content-section {
    padding: 22px 18px 24px;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .spec-table th {
    width: 96px;
  }

  .spec-table th,
  .spec-table td {
    padding: 12px 13px;
  }

  .contact-band {
    align-items: flex-start;
    flex-direction: column;
  }

  .post-nav {
    grid-template-columns: 1fr;
  }

  .post-nav .next,
  .post-nav .next span {
    text-align: left;
    justify-content: flex-start;
  }

  .sidebar {
    position: static;
  }

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

  .footer-brand,
  .footer-links {
    justify-content: center;
  }

  .copyright {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}