:root {
  --ink: #171a1d;
  --muted: #5f666d;
  --line: #d9dde1;
  --paper: #f7f7f4;
  --panel: #ffffff;
  --steel: #273036;
  --accent: #c33f2d;
  --accent-dark: #8f2a21;
  --teal: #207b79;
  --gold: #b9862a;
  --shadow: 0 18px 48px rgba(19, 25, 31, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  background: var(--paper);
  line-height: 1.6;
}

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

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

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

.container {
  width: min(1440px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto auto auto;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(20px, 4vw, 54px);
  color: #fff;
  background: rgba(18, 21, 24, 0.86);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(14px);
}

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

.brand strong {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 16px;
  letter-spacing: 0;
}

.brand small {
  display: block;
  color: rgba(255, 255, 255, 0.68);
  font-size: 12px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  flex: 0 0 auto;
  color: #fff;
  font-weight: 800;
  background: var(--accent);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav a,
.header-cta {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 12px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
}

.language-picker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 13px;
  font-weight: 700;
}

.language-picker select {
  width: auto;
  min-height: 36px;
  padding: 6px 30px 6px 10px;
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.language-picker option {
  color: var(--ink);
}

.site-nav a:hover {
  color: #fff;
}

.header-cta {
  color: #fff;
  background: var(--accent);
  border-radius: 6px;
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 6px;
}

.menu-button span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: #fff;
}

.hero {
  position: relative;
  min-height: 700px;
  padding: 150px 0 92px;
  color: #fff;
  background-color: var(--steel);
  background-image: var(--hero-image);
  background-position: center;
  background-size: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(12, 15, 18, 0.88) 0%, rgba(12, 15, 18, 0.68) 46%, rgba(12, 15, 18, 0.24) 100%),
    linear-gradient(0deg, rgba(12, 15, 18, 0.72) 0%, rgba(12, 15, 18, 0.08) 42%);
}

.hero-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: clamp(34px, 6vw, 72px);
  align-items: end;
}

.hero-content {
  max-width: 760px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #ffcc73;
}

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.06;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  font-size: 20px;
  line-height: 1.35;
}

.hero-copy {
  max-width: 700px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  color: #fff;
  font-weight: 800;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
}

.button.primary {
  background: var(--accent);
}

.button.primary:hover {
  background: var(--accent-dark);
}

.button.ghost {
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.08);
}

.button.wide {
  width: 100%;
}

.hero-highlight {
  display: inline-flex;
  max-width: 100%;
  padding: 10px 14px;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
}

.hero-panel {
  align-self: stretch;
  min-height: 430px;
  padding: 28px;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.07)),
    rgba(17, 21, 25, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  backdrop-filter: blur(12px);
  box-shadow: 0 22px 54px rgba(0, 0, 0, 0.22);
}

.hero-panel h2 {
  margin-bottom: 12px;
  font-size: 28px;
  line-height: 1.22;
}

.hero-panel p:not(.eyebrow) {
  color: rgba(255, 255, 255, 0.72);
}

.hero-category-list {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.hero-category {
  display: grid;
  gap: 4px;
  padding: 13px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 6px;
}

.hero-category:hover {
  background: rgba(255, 255, 255, 0.14);
}

.hero-category strong {
  font-size: 15px;
}

.hero-category span {
  overflow: hidden;
  color: rgba(255, 255, 255, 0.66);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stats-band {
  position: relative;
  margin-top: -58px;
  z-index: 3;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.stat-item {
  min-height: 116px;
  padding: 26px;
  border-right: 1px solid var(--line);
}

.stat-item:last-child {
  border-right: 0;
}

.stat-item strong {
  display: block;
  margin-bottom: 6px;
  color: var(--accent);
  font-size: 30px;
  line-height: 1;
}

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

.section {
  padding: 94px 0;
}

.split,
.section-head {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(320px, 1.1fr);
  gap: 56px;
  align-items: start;
}

.lead {
  color: var(--muted);
  font-size: 17px;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 44px;
}

.advantage-card,
.product-card,
.service-card,
.industry-card,
.process-card,
.case-card,
.faq-item,
.quote-form,
.gallery-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.advantage-card {
  padding: 24px;
}

.advantage-card h3,
.service-card h3,
.industry-card h3,
.case-card h3 {
  margin-bottom: 10px;
}

.advantage-card p,
.service-card p,
.industry-card p,
.case-card p,
.process-card p,
.gallery-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.catalog-overview-section,
.products-section,
.quality-section,
.cases-section {
  background: #fff;
}

.catalog-overview-section {
  padding: 90px 0 80px;
  background:
    linear-gradient(180deg, #fff 0%, #f2f4f1 100%);
}

.catalog-overview-layout {
  display: grid;
  grid-template-columns: 0.58fr 1.42fr;
  gap: 46px;
  align-items: start;
}

.catalog-matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.catalog-card {
  display: grid;
  grid-template-rows: auto auto minmax(64px, auto) 1fr auto;
  min-height: 250px;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(19, 25, 31, 0.08);
}

.catalog-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.catalog-card-head span {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #fff;
  background: var(--steel);
  border-radius: 6px;
  font-weight: 900;
}

.catalog-card-head h3 {
  margin: 0;
}

.catalog-card small {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 12px;
  padding: 4px 9px;
  color: var(--teal);
  background: #e8f4f3;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 900;
}

.catalog-card p {
  min-height: 48px;
  color: var(--muted);
  font-size: 14px;
}

.catalog-child-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.catalog-child-row button {
  max-width: 100%;
  min-height: 30px;
  padding: 0 9px;
  overflow: hidden;
  color: var(--steel);
  background: #f4f6f5;
  border: 1px solid var(--line);
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.catalog-child-row button:hover {
  color: #fff;
  background: var(--teal);
  border-color: var(--teal);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.filter-button {
  min-height: 38px;
  padding: 0 14px;
  color: var(--muted);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
}

.filter-button.active,
.filter-button:hover {
  color: #fff;
  background: var(--steel);
  border-color: var(--steel);
}

.catalog-layout {
  display: grid;
  grid-template-columns: 268px minmax(0, 1fr);
  gap: 26px;
  margin-top: 34px;
  align-items: start;
}

.catalog-sidebar {
  position: sticky;
  top: 86px;
  display: grid;
  gap: 12px;
  padding: 18px;
  background: #f6f7f5;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.catalog-tree-head {
  display: grid;
  gap: 10px;
}

.catalog-tree-head .section-kicker {
  margin-bottom: 0;
}

.tree-all,
.tree-category-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  color: var(--steel);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
  font-weight: 900;
}

.tree-category-head span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.tree-category-head em {
  display: inline-grid;
  width: 24px;
  height: 24px;
  place-items: center;
  flex: 0 0 auto;
  color: inherit;
  background: rgba(39, 48, 54, 0.08);
  border-radius: 4px;
  font-size: 11px;
  font-style: normal;
}

.tree-category.active .tree-category-head em,
.tree-category-head:hover em {
  background: rgba(255, 255, 255, 0.16);
}

.tree-all.active,
.tree-all:hover,
.tree-category.active .tree-category-head,
.tree-category-head:hover {
  color: #fff;
  background: var(--steel);
  border-color: var(--steel);
}

.tree-all strong,
.tree-category-head strong {
  color: inherit;
  font-size: 13px;
}

.tree-category {
  display: grid;
  gap: 8px;
}

.tree-product-list {
  display: grid;
  gap: 6px;
  padding-left: 8px;
}

.tree-product-list button {
  display: grid;
  gap: 2px;
  min-height: 42px;
  padding: 8px 10px;
  text-align: left;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-left: 2px solid var(--line);
  cursor: pointer;
}

.tree-product-list button:hover {
  color: var(--accent);
  border-left-color: var(--accent);
  background: #fff;
}

.tree-product-list span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}

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

.product-card {
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.product-image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #d9dde1;
}

.image-watermark {
  position: absolute;
  right: 12px;
  bottom: 10px;
  padding: 4px 8px;
  color: rgba(255, 255, 255, 0.86);
  background: rgba(17, 21, 25, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 4px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.product-image img,
.gallery-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-tag {
  position: absolute;
  left: 16px;
  top: 16px;
  padding: 5px 10px;
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  background: var(--accent);
  border-radius: 4px;
}

.product-body {
  display: grid;
  grid-template-rows: 222px 104px 46px;
  padding: 22px;
}

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

.product-series {
  min-height: 18px;
  margin-bottom: 8px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.product-body p {
  display: -webkit-box;
  min-height: 84px;
  overflow: hidden;
  color: var(--muted);
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.product-body h3 {
  display: -webkit-box;
  min-height: 68px;
  margin-bottom: 10px;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.spec-list {
  display: grid;
  gap: 8px;
  min-height: 104px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 14px;
}

.spec-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 5px;
  align-items: start;
}

.spec-list b {
  color: var(--ink);
  white-space: nowrap;
}

.spec-list span {
  min-width: 0;
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  margin-top: 0;
  color: var(--accent);
  font-weight: 800;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.product-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.mini-rfq {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin-top: 0;
  padding: 0 10px;
  color: var(--steel);
  background: #f4f6f5;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 900;
}

.mini-rfq:hover {
  color: #fff;
  background: var(--teal);
  border-color: var(--teal);
}

.services-section {
  background: #eef2f1;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 42px;
}

.service-card {
  min-height: 230px;
  padding: 26px;
}

.service-number {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  margin-bottom: 24px;
  color: #fff;
  background: var(--teal);
  border-radius: 6px;
  font-weight: 800;
}

.quality-layout {
  grid-template-columns: 0.82fr 1.18fr;
  align-items: center;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.gallery-card {
  overflow: hidden;
}

.gallery-card figure {
  aspect-ratio: 5 / 4;
  margin: 0;
}

.gallery-card div {
  padding: 16px;
}

.gallery-card h3 {
  margin-bottom: 6px;
  font-size: 16px;
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 34px;
}

.industry-card {
  padding: 24px;
  border-left: 4px solid var(--gold);
}

.process-section {
  color: #fff;
  background: var(--steel);
}

.process-section .section-kicker,
.process-section .lead {
  color: #ffcc73;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 34px;
}

.process-card {
  min-height: 230px;
  padding: 26px;
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.18);
}

.process-card strong {
  display: block;
  margin-bottom: 38px;
  color: #ffcc73;
  font-size: 34px;
}

.process-card p {
  color: rgba(255, 255, 255, 0.72);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 34px;
}

.case-card {
  padding: 26px;
}

.case-tag {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 4px 9px;
  color: #fff;
  background: var(--teal);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 800;
}

.faq-section {
  background: #eef2f1;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  padding: 0;
}

.faq-item summary {
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 800;
}

.faq-item p {
  margin: 0;
  padding: 0 20px 20px;
  color: var(--muted);
}

.contact-section {
  color: #fff;
  background: #171a1d;
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 54px;
  align-items: start;
}

.contact-section .section-kicker {
  color: #ffcc73;
}

.contact-section .lead {
  color: rgba(255, 255, 255, 0.72);
}

.contact-list {
  display: grid;
  gap: 12px;
  margin-top: 34px;
  color: rgba(255, 255, 255, 0.82);
}

.contact-list a,
.contact-list span {
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.quote-form {
  padding: 28px;
  color: var(--ink);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

label {
  display: grid;
  gap: 7px;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

input,
textarea,
select {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  outline: none;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(32, 123, 121, 0.12);
}

.form-message {
  min-height: 24px;
  margin: 12px 0 0;
  color: var(--teal);
}

.form-message.error {
  color: var(--accent);
}

.site-footer {
  padding: 34px 0;
  color: rgba(255, 255, 255, 0.72);
  background: #101214;
}

.footer-layout {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.footer-layout strong {
  display: block;
  margin-bottom: 6px;
  color: #fff;
}

.footer-layout p {
  margin-bottom: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.floating-actions {
  position: fixed;
  right: 18px;
  bottom: 22px;
  z-index: 30;
  display: grid;
  gap: 8px;
  width: 118px;
}

.float-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 10px;
  color: var(--steel);
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(39, 48, 54, 0.16);
  border-radius: 6px;
  box-shadow: 0 10px 24px rgba(19, 25, 31, 0.14);
  font-size: 12px;
  font-weight: 800;
}

.float-action.primary {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.product-dialog {
  width: min(1080px, calc(100% - 32px));
  padding: 0;
  color: var(--ink);
  background: #fff;
  border: 0;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.product-dialog::backdrop {
  background: rgba(0, 0, 0, 0.58);
}

.dialog-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 38px;
  height: 38px;
  color: #fff;
  background: rgba(0, 0, 0, 0.45);
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  font-size: 26px;
  line-height: 1;
}

.dialog-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  min-height: min(760px, calc(100vh - 80px));
}

.dialog-media {
  display: grid;
  grid-template-rows: 1fr auto;
  background: #eef2f1;
}

.dialog-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.dialog-price {
  padding: 22px;
  color: #fff;
  background: var(--steel);
}

.dialog-price span,
.dialog-price small {
  display: block;
  color: rgba(255, 255, 255, 0.68);
}

.dialog-price strong {
  display: block;
  margin: 4px 0;
  font-size: 28px;
}

.dialog-body {
  padding: 28px;
  overflow: auto;
}

.dialog-body h3 {
  font-size: 28px;
}

.dialog-tabs {
  display: grid;
  gap: 20px;
  margin: 22px 0;
}

.dialog-tabs section {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.dialog-tabs h4 {
  margin: 0 0 12px;
  font-size: 15px;
  text-transform: uppercase;
}

.feature-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.feature-row span {
  padding: 5px 10px;
  color: var(--teal);
  background: #e8f4f3;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.feature-row.muted span {
  color: var(--muted);
  background: #f1f2f0;
}

.spec-chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-height: 168px;
  overflow: auto;
  padding-right: 4px;
}

.spec-chip-grid span {
  padding: 5px 9px;
  color: var(--steel);
  background: #f5f6f4;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
}

.dialog-note {
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .menu-button {
    display: block;
  }

  .site-nav,
  .header-cta,
  .language-picker {
    display: none;
  }

  .site-nav.open {
    position: absolute;
    top: 71px;
    left: 16px;
    right: 16px;
    display: grid;
    gap: 0;
    padding: 8px;
    background: #171a1d;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 8px;
  }

  .site-nav.open a {
    min-height: 44px;
  }

  .site-header:has(.site-nav.open) .language-picker {
    position: absolute;
    top: 318px;
    left: 16px;
    right: 16px;
    z-index: 21;
    display: flex;
    padding: 10px;
    background: #171a1d;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 8px;
  }

  .site-header:has(.site-nav.open) .language-picker select {
    flex: 1;
  }

  .hero {
    min-height: 640px;
  }

  .hero-layout,
  .catalog-overview-layout,
  .catalog-layout {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    min-height: auto;
  }

  .catalog-sidebar {
    position: static;
  }

  .stats-grid,
  .advantage-grid,
  .service-grid,
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-grid,
  .catalog-matrix,
  .industry-grid,
  .case-grid,
  .contact-layout,
  .split,
  .section-head,
  .quality-layout {
    grid-template-columns: 1fr;
  }

  .filter-row {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .site-header {
    padding: 12px 14px;
  }

  .brand strong {
    max-width: 220px;
    font-size: 14px;
  }

  .brand small {
    display: none;
  }

  .hero {
    min-height: 620px;
    padding: 128px 0 86px;
  }

  .hero-content {
    margin-left: 14px;
    max-width: calc(100% - 28px);
  }

  h1 {
    font-size: 40px;
  }

  h2 {
    font-size: 30px;
  }

  .section {
    padding: 70px 0;
  }

  .stats-grid,
  .advantage-grid,
  .product-grid,
  .catalog-matrix,
  .service-grid,
  .industry-grid,
  .process-grid,
  .case-grid,
  .gallery-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .stat-item {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .stat-item:last-child {
    border-bottom: 0;
  }

  .footer-layout {
    display: grid;
  }

  .dialog-layout {
    grid-template-columns: 1fr;
  }

  .dialog-media {
    grid-template-rows: 260px auto;
  }

  .floating-actions {
    left: 0;
    right: 0;
    bottom: 0;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    width: auto;
    padding: 8px;
    background: rgba(20, 24, 27, 0.92);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(12px);
  }

  .float-action {
    min-height: 42px;
    border-radius: 0;
    box-shadow: none;
  }

  .site-footer {
    padding-bottom: 86px;
  }
}