:root {
  --ink: #14201d;
  --ink-soft: #31423d;
  --deep: #0b3a33;
  --deep-2: #0d4b40;
  --green: #0b6b5a;
  --green-light: #2ba389;
  --aqua: #6dc9b4;
  --amber: #efa43a;
  --amber-dark: #d9791c;
  --paper: #f5f7f6;
  --paper-2: #eef3f0;
  --line: #d9e2de;
  --line-dark: rgba(255, 255, 255, 0.18);
  --white: #ffffff;
  --muted: #5e6c68;
  --muted-light: #b9c7c2;
  --shadow: 0 24px 70px rgba(14, 54, 46, 0.12);
  --shadow-soft: 0 10px 30px rgba(14, 54, 46, 0.08);
  --radius: 8px;
  --header-h: 82px;
  --font-cn: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  --font-en: "Segoe UI", Inter, Roboto, var(--font-cn);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: var(--font-cn);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

h1,
h2,
h3,
p,
figure,
ul {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

svg {
  display: block;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 10px 16px;
  background: var(--amber);
  color: var(--ink);
  border-radius: var(--radius);
  transform: translateY(-160%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(1240px, 100% - 48px);
  margin-inline: auto;
}

.section {
  padding-block: 108px;
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 54px;
}

.section-heading h2,
.about-copy h2,
.innovation-copy h2,
.sustainability-copy h2,
.contact-intro h2 {
  max-width: 800px;
  margin-top: 14px;
  color: var(--ink);
  font-size: 42px;
  line-height: 1.24;
  font-weight: 700;
}

.section-heading .section-lead {
  max-width: 520px;
}

.section-lead,
.about-copy > .section-lead,
.innovation-copy > .section-lead,
.sustainability-copy > .section-lead {
  color: var(--muted);
  font-size: 17px;
}

.eyebrow {
  color: var(--green);
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 700;
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 2px;
  margin-right: 10px;
  background: var(--amber);
  vertical-align: middle;
}

/* Buttons */
.btn {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  transition: background-color 0.25s ease, border-color 0.25s ease,
    color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.btn svg {
  width: 18px;
  height: 18px;
  stroke-width: 2.2;
}

.btn-amber {
  background: var(--amber);
  color: var(--ink);
}

.btn-amber:hover {
  background: #f7b457;
  box-shadow: 0 12px 28px rgba(239, 164, 58, 0.28);
  transform: translateY(-2px);
}

.btn-ghost {
  border-color: rgba(11, 58, 51, 0.42);
  color: var(--deep);
}

.btn-ghost:hover {
  border-color: var(--deep);
  background: var(--deep);
  color: var(--white);
}

.btn-outline {
  border-color: var(--green);
  color: var(--green);
}

.btn-outline:hover {
  background: var(--green);
  color: var(--white);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
}

.card-link svg {
  width: 16px;
  height: 16px;
  transition: transform 0.2s ease;
}

.card-link:hover svg {
  transform: translate(3px, -3px);
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 120;
  color: var(--ink);
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.9) 0%,
    rgba(255, 255, 255, 0) 100%
  );
  transition: background-color 0.3s ease, box-shadow 0.3s ease, color 0.3s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 8px 30px rgba(13, 43, 37, 0.1);
  color: var(--ink);
}

.header-inner {
  display: flex;
  width: min(1440px, 100% - 56px);
  height: var(--header-h);
  margin-inline: auto;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: block;
  width: 50px;
  height: 50px;
  flex: 0 0 auto;
  overflow: hidden;
  border-radius: 50%;
  background: #fff url("../img/logo.png") center / cover no-repeat;
}

.brand-mark svg {
  display: none;
}

.brand-text {
  display: grid;
  line-height: 1.25;
}

.brand-text strong {
  font-size: 21px;
  font-weight: 800;
}

.brand-text small {
  margin-top: 3px;
  color: currentColor;
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  opacity: 0.72;
}

.primary-nav {
  margin-left: auto;
}

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2vw, 34px);
}

.primary-nav a {
  position: relative;
  display: inline-block;
  padding-block: 10px;
  font-size: 15px;
  font-weight: 600;
  opacity: 0.92;
}

.primary-nav a[aria-current="page"] {
  opacity: 1;
}

.primary-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 2px;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform 0.25s ease;
}

.primary-nav a:hover {
  opacity: 1;
}

.primary-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left center;
}

.primary-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.lang-toggle {
  display: inline-flex;
  min-width: 68px;
  height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid rgba(20, 32, 29, 0.28);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.62);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.lang-toggle svg {
  width: 17px;
  height: 17px;
}

.lang-dropdown {
  position: relative;
  width: 100%;
  height: 100%;
}

.lang-dropdown summary {
  display: flex;
  width: 100%;
  height: 100%;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 12px;
  cursor: pointer;
  list-style: none;
}

.lang-dropdown summary::-webkit-details-marker {
  display: none;
}

.lang-current-code {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.lang-toggle img {
  display: block;
  width: 20px;
  height: 14px;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(20, 32, 29, 0.12);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 9px);
  right: 0;
  z-index: 200;
  display: grid;
  min-width: 190px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  box-shadow: 0 18px 45px rgba(13, 43, 37, 0.17);
}

.lang-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.lang-menu a:hover,
.lang-menu a.is-current {
  background: rgba(234, 171, 62, 0.14);
}

.lang-toggle:hover {
  border-color: var(--amber);
  background: var(--white);
}

.site-header.scrolled .lang-toggle {
  border-color: var(--line);
  background: var(--white);
  color: var(--ink);
}

.header-cta {
  min-height: 46px;
  padding-inline: 18px;
  font-size: 14px;
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(20, 32, 29, 0.28);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.62);
  color: var(--ink);
}

.site-header.scrolled .menu-toggle {
  border-color: var(--line);
  background: var(--white);
  color: var(--ink);
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
}

.menu-toggle svg:last-child {
  display: none;
}

.menu-toggle[aria-expanded="true"] svg:first-child {
  display: none;
}

.menu-toggle[aria-expanded="true"] svg:last-child {
  display: block;
}

.mobile-panel {
  position: fixed;
  inset: 0;
  z-index: 110;
  display: flex;
  align-items: center;
  overflow-y: auto;
  background: var(--paper);
  color: var(--ink);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4%);
  transition: opacity 0.28s ease, transform 0.28s ease, visibility 0.28s ease;
}

.mobile-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-panel-inner {
  display: grid;
  width: min(620px, 100% - 48px);
  margin-inline: auto;
  gap: 34px;
  justify-items: start;
  padding-block: 96px 34px;
}

.mobile-nav ul {
  display: grid;
  gap: 4px;
}

.mobile-nav a {
  display: inline-block;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 28px;
  font-weight: 700;
}

.mobile-panel .btn {
  font-size: 16px;
}

.mobile-tools {
  display: grid;
  gap: 8px;
}

.mobile-tools a {
  color: var(--muted);
  font-family: var(--font-en);
  font-size: 14px;
}

/* Hero */
.hero {
  position: relative;
  display: flex;
  min-height: min(920px, 100svh);
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  color: var(--white);
}

.hero-image {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(1.08) saturate(0.92);
}

.hero-scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    100deg,
    rgba(255, 255, 255, 0.94) 0%,
    rgba(255, 255, 255, 0.78) 43%,
    rgba(255, 255, 255, 0.12) 82%
  );
}

.hero-copy {
  position: relative;
  z-index: 2;
  padding: 164px 0 52px;
}

.hero-eyebrow {
  color: var(--green);
}

.hero-title {
  display: grid;
  max-width: 900px;
  margin-top: 18px;
  gap: 6px;
  color: var(--ink);
  font-size: 68px;
  line-height: 1.12;
  font-weight: 800;
}

.hero-title-accent {
  color: var(--amber-dark);
}

.hero-lead {
  max-width: 660px;
  margin-top: 24px;
  color: var(--ink-soft);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.hero-stats-wrap {
  position: relative;
  z-index: 2;
  padding-bottom: 36px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(20, 32, 29, 0.28);
}

.hero-stat {
  display: grid;
  gap: 5px;
  padding: 24px 28px 0 0;
}

.hero-stat + .hero-stat {
  border-left: 1px solid rgba(20, 32, 29, 0.28);
  padding-left: 28px;
}

.hero-stat strong {
  color: var(--ink);
  font-family: var(--font-en);
  font-size: 34px;
  font-weight: 800;
}

.hero-stat strong span {
  color: var(--amber-dark);
}

.hero-stat > span {
  color: var(--muted);
  font-size: 14px;
}

/* About */
.about-section {
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  align-items: center;
  gap: 76px;
}

.image-frame {
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--paper-2);
}

.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.image-frame:hover img {
  transform: scale(1.035);
}

.about-media .image-frame {
  aspect-ratio: 4 / 4.45;
}

.media-caption {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-top: 22px;
  padding-left: 18px;
  border-left: 3px solid var(--amber);
}

.caption-index {
  color: var(--green);
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 800;
}

.media-caption p {
  color: var(--muted);
  font-size: 15px;
}

.about-heading-link {
  display: inline-flex;
  align-items: flex-start;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.about-heading-link:hover h2 {
  color: var(--green);
}

.about-heading-link > svg {
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  margin-top: 18px;
  color: var(--amber);
  transition: transform 0.25s ease;
}

.about-heading-link:hover > svg {
  transform: translate(3px, -3px);
}

.about-values {
  display: grid;
  gap: 22px;
  margin: 38px 0 34px;
}

.value-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.value-item > svg {
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  margin-top: 5px;
  color: var(--green);
  stroke-width: 2;
}

.value-item h3 {
  color: var(--ink);
  font-size: 18px;
}

.value-item p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 15px;
}

/* Products */
.products-section {
  background: var(--paper);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.product-category-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.product-category-card {
  position: relative;
  display: grid;
  min-height: 230px;
  align-content: end;
  gap: 14px;
  padding: 32px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--white), #edf4f1);
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.product-category-card::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(11, 107, 90, 0.08);
}

.product-category-card:hover {
  transform: translateY(-4px);
  border-color: rgba(11, 107, 90, 0.35);
  box-shadow: 0 22px 50px rgba(13, 43, 37, 0.12);
}

.product-category-count {
  position: absolute;
  top: 24px;
  left: 28px;
  color: var(--green);
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.product-category-card h3 {
  margin: 0;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
}

.product-category-card p {
  margin: 0;
  color: var(--muted);
}

.product-category-card .card-link {
  margin-top: 4px;
}

@media (max-width: 720px) {
  .product-category-grid { grid-template-columns: 1fr; }
}

.product-card {
  display: flex;
  min-height: 354px;
  flex-direction: column;
  padding: 32px 30px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.product-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow);
  transform: translateY(-6px);
}

.product-card-dark {
  background: var(--deep);
  color: var(--white);
}

.product-card-accent {
  background: var(--amber);
  color: var(--ink);
}

.card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 34px;
}

.card-topline svg {
  width: 28px;
  height: 28px;
  color: var(--green);
  stroke-width: 2;
}

.product-card-dark .card-topline svg {
  color: var(--aqua);
}

.product-card-accent .card-topline svg {
  color: var(--deep);
}

.card-number {
  color: var(--muted-light);
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 800;
}

.product-card-dark .card-number {
  color: rgba(255, 255, 255, 0.5);
}

.product-card-accent .card-number {
  color: rgba(20, 32, 29, 0.55);
}

.card-category {
  display: inline-flex;
  width: fit-content;
  margin: 4px 0 10px;
  padding: 5px 9px;
  border-radius: 999px;
  background: rgba(11, 107, 90, 0.1);
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
}

.product-card-dark .card-category,
.product-card-accent .card-category {
  background: rgba(255, 255, 255, 0.14);
  color: var(--white);
}

.product-spec-table {
  width: 100%;
  margin: 18px 0 28px;
  border-collapse: collapse;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.product-spec-table th,
.product-spec-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.product-spec-table th {
  width: 28%;
  background: rgba(11, 107, 90, 0.06);
  color: var(--ink);
  font-weight: 800;
}

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

.product-card h3 {
  margin-bottom: 14px;
  font-size: 24px;
  line-height: 1.35;
}

.product-card p {
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 15px;
}

.product-card-dark p {
  color: rgba(255, 255, 255, 0.76);
}

.product-card-accent p {
  color: rgba(20, 32, 29, 0.76);
}

.product-card-dark .card-link {
  color: var(--aqua);
}

.product-card-accent .card-link {
  color: var(--deep);
}

/* Industries */
.industries-section {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  color: var(--white);
}

.industries-media {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.industries-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
}

.industries-section .container {
  position: relative;
  z-index: 2;
}

.section-heading-light h2,
.section-heading-light .section-lead {
  color: var(--white);
}

.section-heading-light .section-lead {
  color: rgba(255, 255, 255, 0.76);
}

.section-heading-light .eyebrow {
  color: var(--aqua);
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
}

.app-item {
  min-height: 240px;
  padding: 30px 24px;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  transition: background-color 0.3s ease;
}

.app-item:hover {
  background: rgba(255, 255, 255, 0.06);
}

.app-item svg {
  width: 30px;
  height: 30px;
  margin-bottom: 26px;
  color: var(--amber);
  stroke-width: 2;
}

.app-item h3 {
  font-size: 19px;
}

.app-item p {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
}

/* Innovation */
.innovation-section {
  background: var(--white);
}

.innovation-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  align-items: center;
  gap: 80px;
}

.rnd-list {
  display: grid;
  gap: 0;
  margin-top: 42px;
}

.rnd-item {
  display: flex;
  gap: 22px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.rnd-item:last-child {
  border-bottom: 1px solid var(--line);
}

.rnd-index {
  color: var(--green);
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 800;
}

.rnd-item h3 {
  font-size: 20px;
}

.rnd-item p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 15px;
}

.innovation-media {
  position: relative;
}

.innovation-media .image-frame {
  aspect-ratio: 0.86;
}

.science-note {
  position: absolute;
  right: -34px;
  bottom: 38px;
  left: 36px;
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 24px;
  border-left: 4px solid var(--amber);
  background: var(--deep);
  box-shadow: var(--shadow);
  color: var(--white);
}

.science-note span {
  color: var(--aqua);
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 800;
}

.science-note p {
  max-width: 300px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 14px;
}

/* Sustainability */
.sustainability-section {
  background: var(--paper);
}

.sustainability-hero {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  align-items: center;
  gap: 76px;
  margin-bottom: 54px;
}

.sustainability-image {
  height: 420px;
  overflow: hidden;
  border-radius: var(--radius);
}

.sustainability-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.esg-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.esg-item {
  min-height: 250px;
  padding: 34px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.esg-item svg {
  width: 30px;
  height: 30px;
  margin-bottom: 26px;
  color: var(--green);
  stroke-width: 2;
}

.esg-item h3 {
  font-size: 20px;
}

.esg-item p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 15px;
}

/* News */
.news-section {
  background: var(--white);
}

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

.news-card {
  display: grid;
  grid-template-columns: 132px 1fr;
  gap: 30px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-card:hover {
  box-shadow: var(--shadow-soft);
  transform: translateX(6px);
}

.news-date {
  display: grid;
  align-content: start;
  justify-items: start;
  padding-top: 5px;
}

.news-date strong {
  color: var(--green);
  font-family: var(--font-en);
  font-size: 46px;
  line-height: 1;
}

.news-date span {
  margin-top: 8px;
  color: var(--muted);
  font-family: var(--font-en);
  font-size: 13px;
}

.news-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.news-tag {
  margin-bottom: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
}

.news-content h3 {
  max-width: 820px;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.4;
}

.news-content p {
  margin: 10px 0 16px;
  color: var(--muted);
  font-size: 15px;
}

/* Contact */
.contact-section {
  padding-block: 108px;
  background:
    linear-gradient(rgba(11, 58, 51, 0.96), rgba(11, 58, 51, 0.96)),
    url("../img/product-banner-chemical.svg") center / cover no-repeat;
  color: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
  align-items: start;
  gap: 86px;
}

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

.contact-intro .eyebrow {
  color: var(--aqua);
}

.contact-intro > p:not(.eyebrow) {
  max-width: 560px;
  margin-top: 24px;
  color: rgba(255, 255, 255, 0.74);
  font-size: 17px;
}

.contact-channels {
  display: grid;
  gap: 8px;
  margin-top: 42px;
}

.contact-channels > a,
.contact-place {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  transition: color 0.2s ease, transform 0.2s ease;
}

.contact-channels a:hover {
  color: var(--amber);
  transform: translateX(4px);
}

.contact-channels svg {
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  color: var(--amber);
  stroke-width: 2;
}

.contact-channels span {
  display: grid;
  gap: 3px;
}

.contact-channels small {
  color: rgba(255, 255, 255, 0.56);
  font-size: 12px;
}

.contact-channels strong {
  font-family: var(--font-en);
  font-size: 15px;
}

.contact-form {
  display: grid;
  gap: 20px;
  padding: 36px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-field {
  display: grid;
  gap: 7px;
}

.form-field label {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 700;
}

.form-field input,
.form-field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  outline: none;
  transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.form-field input {
  height: 48px;
  padding: 0 14px;
}

.form-field textarea {
  min-height: 128px;
  padding: 13px 14px;
  resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--green);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(11, 107, 90, 0.13);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: #8b9a95;
}

.form-submit {
  justify-self: start;
}

.form-status {
  min-height: 22px;
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
}

/* Footer */
.site-footer {
  background: #0a1a17;
  color: #d9e6e1;
}

.site-footer .brand {
  color: var(--white);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 2fr);
  gap: 80px;
  padding: 74px 0 58px;
}

.brand-footer .brand-mark {
  background-color: var(--white);
}

.footer-brand-block > p {
  max-width: 360px;
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 15px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
}

.footer-nav h3 {
  margin-bottom: 20px;
  color: var(--white);
  font-size: 15px;
}

.footer-nav ul {
  display: grid;
  gap: 12px;
}

.footer-nav a,
.footer-contact-list li {
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

.footer-nav a:hover {
  color: var(--amber);
}

.footer-contact-list {
  word-break: break-all;
}

.footer-bottom {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.46);
  font-size: 13px;
}

.footer-lang-note {
  margin-left: auto;
}

.footer-lang-link {
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius);
  background: transparent;
  color: var(--white);
  font-weight: 700;
}

.footer-lang-link:hover {
  border-color: var(--amber);
  color: var(--amber);
}

/* Inner pages */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 178px 0 74px;
  border-bottom: 1px solid var(--line);
  background: #f6faf8;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    rgba(255, 255, 255, 0.97) 0%,
    rgba(255, 255, 255, 0.92) 36%,
    rgba(255, 255, 255, 0.68) 72%,
    rgba(255, 255, 255, 0.4) 100%
  );
  pointer-events: none;
}

.page-hero-about {
  background-image: url("../img/news-lab-chemical.svg");
  background-size: cover;
  background-position: center 32%;
}

.page-hero-products {
  background-image: url("../industrial-a.webp");
  background-size: cover;
  background-position: center 28%;
}

.page-hero-applications {
  background-image: url("../control-a.webp");
  background-size: cover;
  background-position: center 30%;
}

.page-hero-innovation {
  background-image: url("../lab-a.webp");
  background-size: cover;
  background-position: center 30%;
}

.page-hero-sustainability {
  background-image: url("../img/sustainability-banner-chemical.svg");
  background-size: cover;
  background-position: center 32%;
}

.page-hero-news {
  background-image: url("../engineer-a.webp");
  background-size: cover;
  background-position: center 30%;
}

.page-hero-contact {
  background-image: url("../facility-a.webp");
  background-size: cover;
  background-position: center 32%;
}

.page-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  align-items: end;
  gap: 56px;
  text-align: left;
}

.breadcrumb {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 13px;
}

.page-hero-inner .breadcrumb {
  grid-column: 1;
  grid-row: 1;
  margin-bottom: 16px;
}

.breadcrumb a {
  color: var(--green);
  font-weight: 700;
}

.page-hero h1 {
  max-width: none;
  color: var(--ink);
  font-size: 54px;
  line-height: 1.2;
}

.page-hero-inner h1 {
  grid-column: 1;
  grid-row: 2;
}

.page-lead {
  max-width: 460px;
  margin-top: 20px;
  color: var(--muted);
  font-size: 18px;
}

.page-hero-inner .page-lead {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: end;
  justify-self: start;
  margin-top: 0;
}

.inner-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.6fr);
  align-items: start;
  gap: 68px;
}

.page-aside {
  position: sticky;
  top: calc(var(--header-h) + 28px);
}

.page-aside h2 {
  margin-top: 14px;
  color: var(--ink);
  font-size: 34px;
  line-height: 1.28;
}

.aside-meta {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.aside-meta span {
  position: relative;
  padding-left: 18px;
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 700;
}

.aside-meta span::before {
  content: "";
  position: absolute;
  top: 0.75em;
  left: 0;
  width: 8px;
  height: 2px;
  background: var(--amber);
}

.page-main {
  padding-top: 6px;
}

.info-block {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.info-block h3 {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 22px;
}

.info-block p {
  color: var(--muted);
  font-size: 16px;
}

.info-block p + p {
  margin-top: 14px;
}

.quote-block {
  margin: 34px 0 0;
  padding: 24px 28px;
  border-left: 4px solid var(--amber);
  background: var(--paper);
  color: var(--deep);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.65;
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1180px) {
  .section,
  .contact-section {
    padding-block: 88px;
  }

  .section-heading h2,
  .about-copy h2,
  .innovation-copy h2,
  .sustainability-copy h2,
  .contact-intro h2 {
    font-size: 36px;
  }

  .hero-title {
    font-size: 60px;
  }

  .primary-nav ul {
    gap: 20px;
  }

  .about-grid,
  .innovation-grid,
  .sustainability-hero,
  .contact-grid {
    gap: 56px;
  }

  .apps-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .app-item {
    min-height: 220px;
    padding: 24px 20px;
  }
}

@media (max-width: 1400px) {
  .primary-nav,
  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }
}

@media (max-width: 1040px) {
  .primary-nav,
  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .about-grid,
  .innovation-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about-media {
    max-width: 680px;
  }

  .innovation-media {
    grid-row: 1;
    max-width: 720px;
  }

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

  .sustainability-image {
    height: 360px;
  }

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

  .section-heading {
    gap: 30px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 52px;
  }
}

@media (max-width: 820px) {
  :root {
    --header-h: 72px;
  }

  .header-inner {
    width: calc(100% - 36px);
  }

  .section,
  .contact-section {
    padding-block: 70px;
  }

  .hero {
    min-height: 820px;
  }

  .hero-copy {
    padding-top: 138px;
  }

  .hero-title {
    font-size: 48px;
  }

  .hero-lead {
    font-size: 16px;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
    row-gap: 4px;
  }

  .hero-stat {
    padding: 20px 16px 18px 0;
  }

  .hero-stat:nth-child(even) {
    border-left: 1px solid rgba(20, 32, 29, 0.28);
    padding-left: 20px;
  }

  .hero-stat:nth-child(n + 3) {
    border-top: 1px solid rgba(20, 32, 29, 0.28);
  }

  .hero-stat:nth-child(3) {
    border-left: 0;
    padding-left: 0;
  }

  .section-heading {
    display: grid;
    gap: 18px;
    margin-bottom: 42px;
  }

  .products-grid,
  .esg-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .science-note {
    right: 16px;
    left: 16px;
  }

  .news-card {
    grid-template-columns: 110px 1fr;
    padding: 24px;
  }

  .news-date strong {
    font-size: 38px;
  }

  .contact-form {
    padding: 28px;
  }

  .footer-nav {
    gap: 28px;
  }

  .page-hero {
    padding-top: 148px;
  }

  .page-hero-inner {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .page-hero-inner .page-lead {
    grid-column: 1;
    grid-row: auto;
    margin-top: 18px;
  }

  .page-hero h1 {
    font-size: 44px;
  }
}

@media (max-width: 560px) {
  .hero-scrim {
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.93) 0%,
      rgba(255, 255, 255, 0.86) 52%,
      rgba(255, 255, 255, 0.34) 100%
    );
  }

  .header-inner {
    gap: 12px;
  }

  .brand-text strong {
    font-size: 18px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
  }

  .lang-toggle {
    min-width: 56px;
    height: 42px;
  }

  .hero {
    min-height: 780px;
  }

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

  .hero-actions .btn {
    width: 100%;
  }

  .hero-stat strong {
    font-size: 28px;
  }

  .hero-stat > span {
    font-size: 12px;
  }

  .section-heading h2,
  .about-copy h2,
  .innovation-copy h2,
  .sustainability-copy h2,
  .contact-intro h2 {
    font-size: 30px;
  }

  .section-heading .section-lead {
    font-size: 16px;
  }

  .about-values {
    margin-top: 28px;
  }

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

  .product-card {
    min-height: 320px;
  }

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

  .app-item {
    min-height: 0;
  }

  .sustainability-image {
    height: 260px;
  }

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

  .news-card {
    grid-template-columns: 1fr;
  }

  .news-content h3 {
    font-size: 20px;
  }

  .contact-grid {
    gap: 40px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .form-submit {
    width: 100%;
  }

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

  .footer-bottom {
    flex-wrap: wrap;
  }

  .footer-lang-note {
    margin-left: 0;
  }

  .inner-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .page-aside {
    position: static;
  }

  .page-hero {
    padding: 128px 0 52px;
  }

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

  .page-lead {
    font-size: 16px;
  }

  .quote-block {
    font-size: 17px;
    padding: 20px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===== SEO rebuild additions (detail pages / linked cards / semantic nav) ===== */
a.lang-toggle,
a.footer-lang-link,
a.app-item {
  text-decoration: none;
}

a.app-item {
  color: inherit;
  cursor: pointer;
}

a.footer-lang-link {
  color: var(--white);
}

/* detail inner pages */
.inner-section .page-main h3 {
  margin-top: 0;
}

.feature-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding: 6px 0 6px 26px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.7;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 15px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
  opacity: 0.85;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 22px;
}

.article-meta time {
  color: var(--ink-soft);
  font-size: 14px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 26px;
  color: var(--green);
  font-weight: 700;
  font-size: 14px;
}

.aside-links {
  margin-top: 30px;
}

.aside-links h3 {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.aside-links ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.aside-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.aside-links a::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
}

.aside-links a:hover {
  color: var(--green);
}

.cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 40px;
  padding: 26px 30px;
  border-radius: var(--radius);
  background: var(--green);
  color: #fff;
}

.cta-panel h3 {
  margin: 0 0 6px;
  color: #fff;
}

.cta-panel p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
}

@media (max-width: 720px) {
  .cta-panel {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Page transitions */
@keyframes herun-page-enter {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes herun-transition-old {
  to { opacity: 0; }
}
@keyframes herun-transition-new {
  from { opacity: 0; }
}
body {
  animation: herun-page-enter 0.42s ease both;
}
body.is-leaving {
  animation: none;
  opacity: 0;
  transition: opacity 0.22s ease;
}
@view-transition {
  navigation: auto;
}
::view-transition-old(root) {
  animation: herun-transition-old 0.2s ease both;
}
::view-transition-new(root) {
  animation: herun-transition-new 0.35s ease both;
}
@media (prefers-reduced-motion: reduce) {
  body,
  body.is-leaving,
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation: none;
    transition: none;
    opacity: 1;
  }
}

/* Content attribution and disclaimer */
.herun-editorial-note,
.herun-disclaimer {
  margin-top: 32px;
  padding: 24px 26px;
  border-radius: var(--radius);
}

.herun-editorial-note {
  border-left: 4px solid var(--green);
  background: rgba(11, 107, 90, 0.07);
}

.herun-disclaimer {
  border: 1px solid rgba(240, 182, 74, 0.45);
  background: #fff8e8;
  color: #5c4a25;
}

.herun-editorial-note h2 {
  margin: 0 0 10px;
  color: var(--ink);
  font-size: 22px;
}

.herun-editorial-note p,
.herun-disclaimer p {
  margin: 0;
}

.source-note {
  margin-top: 20px;
  color: var(--muted);
  font-size: 13px;
}

/* ==========================================================================
   产品页 方案 A：左侧分类树 + 产品搜索 + 带图卡片 + TDS 下载
   ========================================================================== */
.product-layout { display: grid; grid-template-columns: 252px minmax(0, 1fr); gap: 30px; align-items: start; }
.product-aside { position: sticky; top: 90px; }
.product-tree { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; background: #fff; }
.product-tree h3 { font-size: 15px; margin: 0 0 12px; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.product-tree ul { list-style: none; margin: 0; padding: 0; }
.product-tree a { display: block; padding: 7px 0; color: var(--muted); font-size: 14px; text-decoration: none; border-bottom: 1px dashed rgba(0,0,0,.05); }
.product-tree a:hover { color: var(--deep); }
.product-tree .tree-l2 { padding-left: 12px; }
.product-tree .tree-l3 { padding-left: 12px; }
.product-tree .tree-l3 a { font-size: 13px; }
.product-tree li.is-active > a { color: var(--amber); font-weight: 800; }
.product-tree li.is-open > a { color: var(--deep); font-weight: 700; }

.product-search { display: flex; gap: 10px; margin-bottom: 24px; }
.product-search input[type="search"] { flex: 1; min-width: 0; padding: 13px 16px; border: 1px solid var(--line); border-radius: 10px; font-size: 15px; }
.product-search button { display: inline-flex; align-items: center; gap: 8px; padding: 0 22px; border: 0; border-radius: 10px; background: var(--deep); color: #fff; font-size: 15px; font-weight: 700; cursor: pointer; }
.product-search button svg { width: 18px; height: 18px; }

.product-cat-block { margin-bottom: 34px; }
.product-list-head { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; margin: 8px 0 16px; padding-top: 14px; border-top: 1px solid var(--line); }
.product-list-head h2 { font-size: 20px; margin: 0; }
.product-list-head span { color: var(--muted); font-size: 13px; }

.p-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.p-card { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.p-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.p-thumb { display: block; height: 150px; background: linear-gradient(135deg, #e9f5f2, #cfe8e2); overflow: hidden; }
.p-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.p-thumb-ph { display: flex; align-items: center; justify-content: center; height: 100%; color: #4f8d83; }
.p-thumb-ph svg { width: 44px; height: 44px; stroke-width: 1.4; }
.p-body { display: flex; flex-direction: column; flex: 1; padding: 18px; }
.p-tag { display: inline-block; width: fit-content; margin-bottom: 10px; padding: 3px 10px; border-radius: 20px; background: rgba(11,107,90,.08); color: #0e7a6a; font-size: 12px; }
.p-body h3 { font-size: 17px; line-height: 1.4; margin: 0 0 12px; }
.p-body h3 a { color: inherit; text-decoration: none; }
.p-facts { list-style: none; margin: 0 0 16px; padding: 0; font-size: 13px; }
.p-facts li { display: flex; justify-content: space-between; gap: 10px; padding: 5px 0; border-bottom: 1px dashed var(--line); }
.p-facts li span { color: var(--muted); }
.p-facts li strong { font-weight: 700; text-align: right; }
.p-desc { margin: 0 0 16px; color: var(--muted); font-size: 13px; }
.p-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: auto; }
.btn-sm { padding: 9px 14px; font-size: 13px; }
.btn-ghost { background: #fff; border: 1px solid var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--deep); }
.p-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.product-category-card .pcc-thumb { display: flex; align-items: center; justify-content: center; height: 104px; margin: -4px -4px 14px; border-radius: 12px; background: linear-gradient(135deg, #eaf5f2, #d5ebe5); color: #4f8d83; }
.product-category-card .pcc-thumb svg { width: 34px; height: 34px; stroke-width: 1.4; }

.product-dl { margin-top: 18px; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: #fbfdfc; }
.product-dl h3 { font-size: 15px; margin: 0 0 10px; }
.dl-item { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px dashed var(--line); color: var(--ink); font-size: 14px; text-decoration: none; }
.dl-item:last-of-type { border-bottom: 0; }
.dl-item svg { width: 18px; height: 18px; color: var(--aqua); flex: none; }
.dl-item em { margin-left: auto; color: var(--muted); font-size: 12px; font-style: normal; }
.dl-cta { display: block; margin-top: 12px; padding: 12px; border-radius: 10px; background: var(--deep); color: #fff; font-size: 13px; font-weight: 700; text-align: center; text-decoration: none; }
.dl-cta:hover { background: var(--aqua); }
.related-products { margin-top: 36px; padding-top: 26px; border-top: 1px solid var(--line); }
.related-products h2 { font-size: 20px; margin: 0 0 18px; }

@media (max-width: 1024px) {
  .product-layout { grid-template-columns: 1fr; }
  .product-aside { position: static; }
  .p-grid, .p-grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .p-grid, .p-grid-3 { grid-template-columns: 1fr; }
  .product-search { flex-direction: column; }
  .product-search button { justify-content: center; padding: 12px; }
}

/* 产品详情页：左参数表 + 右技术资料 */
.product-detail { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 30px; align-items: start; }
.product-detail-main .entry-content { margin: 0; }
.product-detail-side { position: sticky; top: 90px; display: flex; flex-direction: column; gap: 18px; }
.product-side-box { padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.product-side-box h4 { margin: 0 0 10px; color: var(--muted); font-size: 14px; }
.side-terms { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 12px; padding: 0; list-style: none; }
.side-terms a { display: inline-block; padding: 5px 12px; border-radius: 20px; background: rgba(11,107,90,.07); color: #0e7a6a; font-size: 13px; text-decoration: none; }
.side-terms a:hover { background: var(--deep); color: #fff; }
@media (max-width: 1024px) {
  .product-detail { grid-template-columns: 1fr; }
  .product-detail-side { position: static; }
}

/* ==========================================================================
   方案 A 修正：分类卡片（图标块与编号不再重叠）+ 侧栏树可滚动
   ========================================================================== */
.product-cat-block .product-category-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-height: 0;
  padding: 20px;
  gap: 0;
  align-content: normal;
  background: #fff;
}
.product-cat-block .product-category-card::after { display: none; }
.product-cat-block .pcc-thumb {
  width: 100%;
  height: 92px;
  margin: 0 0 16px;
  border-radius: 10px;
}
.product-cat-block .pcc-thumb svg { width: 32px; height: 32px; }
.product-cat-block .product-category-count {
  position: static;
  order: -1;
  margin-bottom: 8px;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(11, 107, 90, 0.08);
  color: #0e7a6a;
  font-family: var(--font-body, inherit);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
}
.product-cat-block .product-category-card h3 { margin: 0 0 8px; font-size: 20px; }
.product-cat-block .product-category-card p { margin: 0 0 14px; font-size: 14px; line-height: 1.6; }
.product-cat-block .product-category-card .card-link { margin-top: auto; }

.product-tree { max-height: calc(100vh - 130px); overflow-y: auto; }
.product-tree::-webkit-scrollbar { width: 6px; }
.product-tree::-webkit-scrollbar-thumb { background: rgba(11,107,90,.25); border-radius: 3px; }

/* 产品卡片标题过长时截断两行，保持卡片等高 */
.p-body h3 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.p-facts li strong { max-width: 62%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ==========================================================================
   修正：页面内容里自带 section 导致「双份内边距」，Banner 与正文之间空隙过大
   ========================================================================== */
.entry-content .section {
  padding-top: 0;
  padding-bottom: 0;
}
.entry-content .section > .container {
  padding-left: 0;
  padding-right: 0;
}
/* 内页 Banner 与正文的间距（原 108px，改为 72px） */
.inner-section { padding-top: 72px; }

/* 内页统一：Banner 之后第一个区块的顶部间距（108px → 72px） */
.page-hero + .section { padding-top: 72px; }

/* ==========================================================================
   合作共赢页面
   ========================================================================== */
.cooperation-page {
  max-width: 1040px;
  margin: 0 auto;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
}
.cooperation-title {
  margin-bottom: 28px;
  color: var(--ink);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.28;
  letter-spacing: -0.02em;
}
.cooperation-lead {
  color: var(--ink);
  font-size: 18px;
  line-height: 1.9;
}
.cooperation-page > p { margin-bottom: 18px; }
.cooperation-page strong { color: var(--ink); }
.cooperation-divider {
  height: 1px;
  margin: 48px 0;
  border: 0;
  background: linear-gradient(90deg, var(--amber), var(--line) 22%, var(--line));
}
.cooperation-section { margin: 0; }
.cooperation-section h2 {
  margin-bottom: 28px;
  padding-left: 18px;
  border-left: 4px solid var(--amber);
  color: var(--ink);
  font-size: clamp(25px, 3vw, 32px);
  line-height: 1.35;
}
.cooperation-section h3 {
  margin: 32px 0 14px;
  color: var(--deep);
  font-size: 20px;
  line-height: 1.5;
}
.cooperation-section h3:first-child { margin-top: 0; }
.cooperation-section ul,
.cooperation-section ol { margin: 0 0 24px; padding-left: 1.35em; }
.cooperation-section li { margin-bottom: 12px; padding-left: 4px; }
.cooperation-section li::marker { color: var(--green); font-weight: 700; }
.cooperation-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.cooperation-feature {
  padding: 28px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--green);
  border-radius: 10px;
  background: linear-gradient(145deg, #fff, var(--paper));
  box-shadow: var(--shadow-soft);
}
.cooperation-feature h3 { margin-top: 0; }
.cooperation-feature p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}
.cooperation-table-wrap {
  margin: 22px 0 24px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow-soft);
}
.cooperation-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  background: #fff;
  text-align: left;
}
.cooperation-table th,
.cooperation-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.cooperation-table th {
  background: var(--deep);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
}
.cooperation-table tr:last-child td { border-bottom: 0; }
.cooperation-table tbody tr:nth-child(even) { background: var(--paper); }
.cooperation-mode-list {
  display: grid;
  gap: 18px;
}
.cooperation-mode-list article {
  padding: 24px 26px;
  border-left: 4px solid var(--amber);
  background: var(--paper);
}
.cooperation-mode-list h3 { margin-top: 0; }
.cooperation-mode-list p { margin: 0; }
.cooperation-check-list { list-style: none; padding-left: 0 !important; }
.cooperation-check-list li {
  position: relative;
  padding-left: 34px;
}
.cooperation-check-list li::before {
  content: "✓";
  position: absolute;
  top: 1px;
  left: 0;
  display: grid;
  width: 23px;
  height: 23px;
  place-items: center;
  border-radius: 50%;
  background: rgba(11, 107, 90, 0.1);
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
}
.cooperation-process { list-style: none; padding-left: 0 !important; counter-reset: coop-step; }
.cooperation-process li {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 20px;
  padding: 18px 20px 18px 58px;
  border-bottom: 1px solid var(--line);
  counter-increment: coop-step;
  position: relative;
}
.cooperation-process li::before {
  content: counter(coop-step, decimal-leading-zero);
  position: absolute;
  left: 12px;
  top: 18px;
  color: var(--amber-dark);
  font-family: var(--font-en);
  font-size: 15px;
  font-weight: 800;
}
.cooperation-process li:last-child { border-bottom: 0; }
.cooperation-process li span { color: var(--muted); }
.cooperation-company {
  margin-bottom: 18px !important;
  color: var(--deep);
  font-size: 21px;
  font-weight: 700;
}
.cooperation-contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 18px;
  margin-bottom: 36px;
}
.cooperation-contact-grid p {
  margin: 0;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}
.cooperation-form-card {
  padding: clamp(22px, 4vw, 38px);
  border-radius: 12px;
  background: linear-gradient(145deg, var(--deep), #0a2f2a);
  box-shadow: var(--shadow);
}
.cooperation-form-card h3 { margin-top: 0; color: #fff; }
.cooperation-form-card .herun-form { color: var(--ink); }
.cooperation-form-card .form-status-success { color: #e9fff8; }
.cooperation-form-card select {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}
.cooperation-form-card .form-status-error { color: #ffd8d8; }
.cooperation-quote {
  margin: 48px 0 0;
  padding: 30px 34px;
  border: 1px solid rgba(239, 164, 58, 0.35);
  border-left: 5px solid var(--amber);
  border-radius: 8px;
  background: #fffaf1;
  color: var(--ink);
  font-size: 18px;
}
.cooperation-quote p { margin: 0; }

@media (max-width: 760px) {
  .cooperation-feature-grid,
  .cooperation-contact-grid { grid-template-columns: 1fr; }
  .cooperation-process li {
    grid-template-columns: 1fr;
    gap: 6px;
    padding-left: 52px;
  }
  .cooperation-divider { margin: 34px 0; }
  .cooperation-quote { padding: 24px; font-size: 16px; }
}