:root {
  --primary: #0a2540;
  --primary-2: #12385d;
  --blue: #4a90e2;
  --orange: #ff6b35;
  --ink: #333333;
  --muted: #666666;
  --light: #f5f8fc;
  --line: #e3eaf3;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(10, 37, 64, 0.13);
  --header-h: 66px;
  --container: 1180px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
  cursor: default;
  -webkit-user-select: none;
  user-select: none;
}

body.menu-open,
body.modal-open {
  overflow: hidden;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

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

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

a,
button,
select {
  cursor: pointer;
}

input,
textarea {
  cursor: text;
  -webkit-user-select: text;
  user-select: text;
}

.container {
  width: min(100% - 48px, var(--container));
  margin: 0 auto;
}

.section {
  padding: 64px 0;
}

.section.alt {
  background: var(--light);
}

.product-showcase-band {
  background: #f4f8fd;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 28px;
}

.section-eyebrow,
.page-eyebrow {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
}

.section-title,
.page-title {
  margin: 0;
  color: var(--primary);
  font-size: 48px;
  line-height: 1.15;
  font-weight: 800;
}

.page-title span {
  display: block;
}

.section-lede,
.page-lede {
  max-width: 560px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.link-arrow {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 700;
}

.link-arrow::after {
  content: "";
  position: absolute;
  left: 0;
  right: 20px;
  bottom: -4px;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms var(--ease);
}

.link-arrow:hover::after {
  transform: scaleX(1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: var(--primary);
  color: var(--white);
  font-weight: 700;
  line-height: 1;
  transition: transform 220ms var(--ease), background 220ms var(--ease), border-color 220ms var(--ease), color 220ms var(--ease);
}

.btn:hover {
  transform: translateY(-2px) scale(1.02);
  background: var(--primary-2);
}

.btn-primary {
  background: var(--orange);
  color: var(--white);
}

.btn-primary:hover {
  background: #ff7b49;
}

.btn-light {
  border-color: rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.12);
  color: var(--white);
  backdrop-filter: blur(10px);
}

.btn-light:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.2);
}

.btn-ghost {
  border-color: var(--line);
  background: var(--white);
  color: var(--primary);
}

.btn-ghost:hover {
  border-color: var(--blue);
  background: #edf5ff;
}

.btn-full {
  width: 100%;
}

.icon-btn {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  background: transparent;
  color: var(--white);
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--header-h);
  color: var(--white);
  transition: background 260ms var(--ease), box-shadow 260ms var(--ease), border-color 260ms var(--ease), backdrop-filter 260ms var(--ease);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-header.is-scrolled,
.site-header.header-solid {
  background: linear-gradient(180deg, rgba(10, 37, 64, 0.76), rgba(10, 37, 64, 0.62));
  box-shadow: 0 10px 28px rgba(4, 18, 32, 0.16);
  border-bottom-color: rgba(255, 255, 255, 0.16);
  -webkit-backdrop-filter: saturate(180%) blur(22px);
  backdrop-filter: saturate(180%) blur(22px);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  min-width: 386px;
}

.brand-mark {
  display: none;
}

.brand-name {
  display: block;
  font-size: 24px;
  font-weight: 900;
  line-height: 1.15;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item {
  position: relative;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 21px 12px;
  color: rgba(255, 255, 255, 0.84);
  font-weight: 600;
  transition: color 220ms var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms var(--ease);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--white);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

.nav-submenu {
  position: absolute;
  left: 50%;
  top: calc(100% - 8px);
  z-index: 1001;
  min-width: 190px;
  padding: 8px;
  border: 1px solid rgba(10, 37, 64, 0.1);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 18px 38px rgba(4, 18, 32, 0.18);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 8px);
  transition: opacity 180ms var(--ease), transform 180ms var(--ease), visibility 180ms var(--ease);
}

.nav-item:hover .nav-submenu,
.nav-item:focus-within .nav-submenu {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.nav-submenu a {
  display: block;
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  transition: background 180ms var(--ease), color 180ms var(--ease);
}

.nav-submenu a:hover,
.nav-submenu a:focus {
  background: #eef5fd;
  color: var(--blue);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-toggle {
  display: none;
}

.hero {
  position: relative;
  min-height: clamp(540px, 76svh, 700px);
  display: flex;
  align-items: center;
  overflow: hidden;
  background-image: var(--hero-image, url("../img/hero-warehouse.jpg"));
  background-size: cover;
  background-position: center;
  color: var(--white);
}

.hero-home {
  --hero-image: url("../img/hero-warehouse.jpg");
}

.hero-carousel {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: var(--primary);
}

.hero-carousel-track {
  height: 100%;
  display: flex;
  transition: transform 620ms cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  display: block;
  color: inherit;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.hero-carousel-dots {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 30px;
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  background: rgba(10, 37, 64, 0.3);
  box-shadow: 0 12px 28px rgba(10, 37, 64, 0.18);
  transform: translateX(-50%);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  backdrop-filter: saturate(160%) blur(12px);
}

.hero-carousel-dots button {
  width: 34px;
  height: 4px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
  padding: 0;
  box-shadow: 0 1px 4px rgba(10, 37, 64, 0.18);
  transition: width 220ms var(--ease), background 220ms var(--ease), opacity 220ms var(--ease);
}

.hero-carousel-dots button.is-active {
  width: 48px;
  background: var(--orange);
}

.hero-carousel-arrow {
  position: absolute;
  z-index: 3;
  top: 50%;
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  background: rgba(10, 37, 64, 0.34);
  color: var(--white);
  box-shadow: 0 16px 34px rgba(10, 37, 64, 0.22);
  transform: translateY(-50%);
  transition: background 220ms var(--ease), border-color 220ms var(--ease), transform 220ms var(--ease);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  backdrop-filter: saturate(160%) blur(12px);
}

.hero-carousel-arrow:hover {
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 107, 53, 0.88);
  transform: translateY(-50%) scale(1.04);
}

.hero-carousel-arrow.is-prev {
  left: clamp(18px, 3vw, 56px);
}

.hero-carousel-arrow.is-next {
  right: clamp(18px, 3vw, 56px);
}

.hero-carousel-arrow svg {
  width: 22px;
  height: 22px;
  stroke-width: 2.2;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 37, 64, 0.94) 0%, rgba(10, 37, 64, 0.74) 37%, rgba(10, 37, 64, 0.18) 72%),
    linear-gradient(180deg, rgba(10, 37, 64, 0.45) 0%, rgba(10, 37, 64, 0.1) 38%, rgba(10, 37, 64, 0.75) 100%);
}

.hero-home::before {
  z-index: 2;
  background: linear-gradient(180deg, rgba(10, 37, 64, 0.18) 0%, rgba(10, 37, 64, 0.04) 46%, rgba(10, 37, 64, 0.36) 100%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.22);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(100% - 48px, var(--container));
  margin: 0 auto;
  padding-top: var(--header-h);
}

.hero-copy {
  max-width: 680px;
}

.hero h1 {
  margin: 0;
  max-width: 760px;
  font-size: 64px;
  line-height: 1.12;
  font-weight: 900;
}

.hero h1 span {
  display: block;
}

.hero p {
  max-width: 620px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 20px;
}

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

.matrix-scroll {
  --matrix-card-height: 276px;
  position: relative;
  overflow: hidden;
  height: var(--matrix-card-height);
  isolation: isolate;
}

.matrix-grid {
  display: flex;
  gap: 18px;
  height: 100%;
  width: max-content;
  align-items: stretch;
  will-change: transform;
}

.matrix-grid.is-manual-moving {
  transition: transform 320ms var(--ease);
}

.matrix-grid.is-looping {
  animation: matrix-loop-left var(--matrix-duration, 30s) linear infinite;
}

.matrix-scroll:hover .matrix-grid.is-looping {
  animation-play-state: paused;
}

.matrix-grid .category-card {
  flex: 0 0 calc((min(100vw - 48px, var(--container)) - 72px) / 5);
  height: 100%;
  min-height: 0;
}

.matrix-arrow {
  position: absolute;
  z-index: 5;
  top: 50%;
  width: 46px;
  height: 46px;
  display: none;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: rgba(255, 255, 255, 0.92);
  box-shadow: none;
  filter: drop-shadow(0 2px 5px rgba(10, 37, 64, 0.42));
  transform: translateY(-50%);
  transition: border-color 220ms var(--ease), color 220ms var(--ease), background 220ms var(--ease), box-shadow 220ms var(--ease), filter 220ms var(--ease);
}

.matrix-scroll.has-controls .matrix-arrow {
  display: inline-flex;
}

.matrix-arrow:hover {
  border-color: rgba(255, 107, 53, 0.38);
  background: rgba(255, 255, 255, 0.94);
  color: var(--orange);
  box-shadow: 0 12px 26px rgba(10, 37, 64, 0.12);
  filter: none;
}

.matrix-arrow.is-prev {
  left: 10px;
}

.matrix-arrow.is-next {
  right: 10px;
}

.matrix-arrow svg {
  width: 25px;
  height: 25px;
  stroke-width: 2.35;
}

@keyframes matrix-loop-left {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(calc(-50% - 9px));
  }
}

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

.category-card,
.advantage-card,
.product-card,
.article-card,
.contact-info-card,
.download-card,
.cert-card {
  border: 0;
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 28px rgba(10, 37, 64, 0.06);
  transition: transform 260ms var(--ease), box-shadow 260ms var(--ease), background 260ms var(--ease);
}

.category-card:hover,
.product-card:hover,
.article-card:hover,
.download-card:hover,
.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.category-card,
.advantage-card {
  padding: 28px;
}

.category-card {
  position: relative;
  min-height: 276px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border: 0;
  padding: 0;
  background: transparent;
  box-shadow: none;
  color: var(--white);
  clip-path: inset(0 round 8px);
  backface-visibility: hidden;
}

.category-card:hover {
  transform: none;
  box-shadow: none;
}

.matrix-grid .category-card:hover {
  transform: none;
  box-shadow: none;
}

.category-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
  background:
    linear-gradient(180deg, rgba(10, 37, 64, 0) 0%, rgba(10, 37, 64, 0) 52%, rgba(10, 37, 64, 0.3) 65%, rgba(10, 37, 64, 0.78) 81%, #0a2540 95%, #071d33 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.14) 0%, rgba(255, 255, 255, 0) 32%);
  pointer-events: none;
}

.category-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  object-fit: cover;
  transform: scale(1);
  transition: transform 360ms var(--ease);
  will-change: transform;
}

.category-card:hover .category-bg {
  transform: scale(1.07);
}

.category-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 84px 18px 16px;
}

.category-content::after {
  content: "";
  width: 34px;
  height: 2px;
  margin-top: 10px;
  border-radius: 999px;
  background: var(--orange);
  opacity: 0;
  transform: scaleX(0.55);
  transform-origin: left center;
  transition: opacity 260ms var(--ease), transform 260ms var(--ease);
}

.category-card:hover .category-content::after {
  opacity: 1;
  transform: scaleX(1);
}

.card-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  border-radius: 8px;
  background: #eef6ff;
  color: var(--blue);
}

.card-icon.accent {
  background: #fff1eb;
  color: var(--orange);
}

.category-card h3,
.advantage-card h3 {
  margin: 0 0 10px;
  color: var(--primary);
  font-size: 22px;
  line-height: 1.3;
}

.category-card h3 {
  min-height: 30px;
  display: flex;
  align-items: flex-end;
  color: var(--white);
  font-size: 20px;
}

.category-card p,
.advantage-card p {
  margin: 0 0 22px;
  color: var(--muted);
}

.category-card p {
  height: 65px;
  overflow: hidden;
  display: -webkit-box;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  margin-bottom: 0;
}

.featured-grid,
.related-product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

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

.product-grid.related-product-grid {
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.product-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.product-card-link,
.product-card-link .product-media {
  cursor: pointer;
}

.product-card-link:focus-visible {
  outline: 2px solid rgba(255, 107, 53, 0.72);
  outline-offset: 4px;
}

.product-media {
  position: relative;
  aspect-ratio: 1 / 1;
  padding: 0;
  background: var(--white);
  overflow: hidden;
  cursor: default;
}

.product-media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  transition: none;
}

.featured-grid .product-media img,
.product-grid .product-media img,
.related-product-grid .product-media img {
  object-fit: cover;
}

.product-badge,
.article-tag,
.status-tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 6px;
  background: #eef6ff;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

.product-badge {
  position: absolute;
  left: 14px;
  top: 14px;
  line-height: 1;
  white-space: nowrap;
}

.product-body {
  position: relative;
  z-index: 2;
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 16px;
  overflow: hidden;
  background: var(--white);
}

.product-body h3 {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 20px;
  line-height: 1.24;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: block;
}

.product-body p {
  margin: 0;
  color: var(--muted);
  min-height: calc(1.5em * 2);
  line-height: 1.5;
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.product-info {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 16px 0 0;
  padding: 12px;
  border-radius: 8px;
  background: #f8fbff;
}

.product-info div {
  display: grid;
  min-width: 0;
  gap: 2px;
  align-items: start;
}

.product-info dt,
.product-info dd {
  margin: 0;
}

.product-info dt {
  color: var(--muted);
  font-size: 12px;
}

.product-info dd {
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.param-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 20px;
  padding: 0;
  list-style: none;
}

.param-list li {
  min-height: 28px;
  padding: 4px 9px;
  border-radius: 6px;
  background: #f4f8fd;
  color: #4d6173;
  font-size: 13px;
}

.product-actions {
  display: flex;
  gap: 10px;
  margin-top: auto;
}

.product-card .product-actions {
  margin-top: auto;
  padding-top: 14px;
}

.product-actions .btn {
  flex: 0 1 auto;
  padding: 0 14px;
}

.product-card .product-actions .btn {
  width: 100%;
  min-height: 38px;
  font-size: 14px;
}

.product-card .product-actions .btn:hover {
  transform: none;
  border-color: var(--blue);
  background: #edf5ff;
  color: var(--primary);
}

.featured-grid .product-media,
.product-grid .product-media,
.related-product-grid .product-media {
  padding: 0;
}

.featured-grid .product-body,
.product-grid .product-body,
.related-product-grid .product-body {
  padding: 14px;
}

.featured-grid .product-body h3,
.product-grid .product-body h3,
.related-product-grid .product-body h3 {
  margin-bottom: 6px;
  font-size: 17px;
  line-height: 1.24;
}

.featured-grid .product-body p,
.product-grid .product-body p,
.related-product-grid .product-body p {
  font-size: 13px;
  line-height: 1.45;
  min-height: calc(1.45em * 2);
}

.featured-grid .product-info,
.product-grid .product-info,
.related-product-grid .product-info {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 4px;
  margin-top: 12px;
  padding: 8px;
}

.featured-grid .product-info dt,
.product-grid .product-info dt,
.related-product-grid .product-info dt {
  font-size: 11px;
}

.featured-grid .product-info dd,
.product-grid .product-info dd,
.related-product-grid .product-info dd {
  font-size: 12px;
}

.featured-grid .param-list,
.product-grid .param-list,
.related-product-grid .param-list {
  gap: 6px;
  margin: 12px 0 16px;
}

.featured-grid .param-list li,
.product-grid .param-list li,
.related-product-grid .param-list li {
  min-height: 26px;
  padding: 3px 8px;
  font-size: 12px;
}

.featured-grid .product-card .product-actions,
.product-grid .product-card .product-actions,
.related-product-grid .product-card .product-actions {
  margin-top: auto;
  padding-top: 12px;
}

.advantage-band {
  position: relative;
  overflow: hidden;
  background: #eef5fb;
  color: var(--ink);
  border-top: 1px solid var(--line);
}

.advantage-band .section-title {
  color: var(--primary);
}

.advantage-band .section-lede {
  color: var(--muted);
}

.advantage-band .section-eyebrow {
  color: var(--blue);
}

.advantage-card {
  background: var(--white);
  color: var(--ink);
}

.advantage-card h3 {
  color: var(--primary);
}

.advantage-card p {
  color: var(--muted);
}

.solutions {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 48px;
  align-items: stretch;
}

.solution-media {
  overflow: hidden;
  border-radius: 8px;
  background: var(--light);
  min-height: 360px;
  height: 100%;
}

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

.solution-list {
  --solution-index-col: 64px;
  --solution-content-gap: 26px;
  display: grid;
  gap: 0;
}

.solution-list .section-head {
  padding-left: 0;
  margin-bottom: 28px;
}

.solution-row {
  display: grid;
  grid-template-columns: var(--solution-index-col) minmax(0, 1fr);
  gap: var(--solution-content-gap);
  align-items: center;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.solution-row > div {
  display: grid;
  gap: 5px;
  align-content: center;
}

.solution-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.solution-index {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--primary);
  color: var(--white);
  font-size: 18px;
  font-weight: 900;
  line-height: 1;
}

.solution-row h3 {
  margin: 0;
  color: var(--primary);
  font-size: 21px;
  line-height: 1.2;
}

.solution-row p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.cta-band {
  background: var(--primary);
  color: var(--white);
}

.cta-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
}

.cta-inner.has-media {
  grid-template-columns: minmax(0, 1fr) minmax(180px, 280px) auto;
}

.cta-media {
  overflow: hidden;
  border-radius: 8px;
  aspect-ratio: 4 / 3;
}

.cta-media img,
.section-inline-media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.cta-inner h2 {
  margin: 0;
  font-size: 40px;
  line-height: 1.2;
}

.cta-inner p {
  margin: 12px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 18px;
}

.page-hero {
  padding: 124px 0 50px;
  background:
    linear-gradient(120deg, rgba(10, 37, 64, 0.97), rgba(18, 56, 93, 0.9)),
    var(--page-hero-image, url("../img/about-production.jpg")) center / cover;
  color: var(--white);
}

.page-hero .page-title,
.page-hero .page-lede {
  color: var(--white);
}

.page-hero .page-lede {
  color: rgba(255, 255, 255, 0.76);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 14px;
}

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

.filter-panel {
  display: grid;
  gap: 22px;
  padding: 24px;
  margin-bottom: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.filter-row {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 16px;
  align-items: start;
}

.filter-label {
  color: var(--primary);
  font-weight: 800;
}

.filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-chip {
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
  color: var(--muted);
  font-weight: 700;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.filter-chip:hover,
.filter-chip.is-active {
  border-color: var(--blue);
  background: #eef6ff;
  color: var(--primary);
}

.product-detail {
  display: grid;
  grid-template-columns: minmax(280px, 440px) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.detail-gallery {
  display: grid;
  gap: 16px;
  align-content: start;
  align-self: start;
}

.detail-main-image {
  overflow: hidden;
  border: 1px solid var(--white);
  border-radius: 8px;
  background: var(--white);
  aspect-ratio: 1 / 1;
}

.detail-main-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.detail-thumb-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 34px;
  gap: 8px;
  align-items: center;
}

.detail-thumb-row.is-static {
  grid-template-columns: minmax(0, 1fr);
}

.detail-thumb-arrow {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 999px;
  background: var(--white);
  color: var(--primary);
  box-shadow: 0 8px 18px rgba(10, 37, 64, 0.12);
  transition: background 200ms var(--ease), color 200ms var(--ease), opacity 200ms var(--ease);
}

.detail-thumb-arrow:hover:not(:disabled) {
  background: var(--primary);
  color: var(--white);
}

.detail-thumb-arrow:disabled {
  opacity: 0.35;
  cursor: default;
}

.detail-thumb-arrow.is-hidden {
  display: none;
}

.detail-thumbs {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: calc((100% - 30px) / 4);
  gap: 10px;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 2px 0;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.detail-thumbs::-webkit-scrollbar {
  display: none;
}

.detail-thumbs button {
  overflow: hidden;
  border: 2px solid transparent;
  border-radius: 8px;
  background: var(--white);
  aspect-ratio: 1 / 1;
  scroll-snap-align: start;
  transition: border-color 200ms var(--ease);
}

.detail-thumbs button.is-active {
  border-color: var(--orange);
}

.detail-thumbs img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.detail-panel {
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.detail-panel .status-tag {
  flex: 0 0 auto;
  align-self: flex-end;
  white-space: nowrap;
}

.detail-title-row {
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  gap: 12px;
}

.detail-panel h1 {
  min-width: 0;
  margin: 0;
  color: var(--primary);
  font-size: 30px;
  line-height: 1.22;
}

.detail-panel p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.5;
}

.detail-specs {
  min-height: 0;
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  margin-top: 14px;
}

.detail-specs h2 {
  margin: 0 0 10px;
  color: var(--primary);
  font-size: 19px;
}

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

.spec-table-wrap {
  min-height: 0;
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  border: 0;
  border-radius: 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(10, 37, 64, 0.46) rgba(10, 37, 64, 0.06);
}

.spec-table-wrap::-webkit-scrollbar {
  width: 9px;
}

.spec-table-wrap::-webkit-scrollbar-track {
  background: rgba(10, 37, 64, 0.06);
}

.spec-table-wrap::-webkit-scrollbar-thumb {
  border: 2px solid var(--white);
  border-radius: 999px;
  background: rgba(10, 37, 64, 0.42);
}

.spec-table th,
.spec-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 14px;
  line-height: 1.35;
  vertical-align: middle;
}

.spec-table th {
  width: 8.5em;
  background: transparent;
  color: var(--primary);
  font-weight: 800;
  text-align: left;
  white-space: nowrap;
}

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

.detail-section {
  margin-top: 64px;
}

.detail-section h2 {
  margin: 0 0 22px;
  color: var(--primary);
  font-size: 34px;
}

.scenario-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.scenario-item {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.scenario-item h3 {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 20px;
}

.scenario-item p {
  margin: 0;
  color: var(--muted);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.download-card {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  padding: 20px;
  align-items: center;
}

.download-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.download-card strong {
  display: block;
  color: var(--primary);
}

.article-card {
  overflow: hidden;
}

.article-card-text {
  min-height: 100%;
}

.article-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--light);
}

.article-media img {
  height: 100%;
  object-fit: cover;
  transition: transform 420ms var(--ease);
}

.article-card:hover .article-media img {
  transform: scale(1.04);
}

.article-body {
  padding: 24px;
}

.article-card-text .article-body {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 14px;
}

.article-body h3 {
  margin: 14px 0 10px;
  color: var(--primary);
  font-size: 22px;
  line-height: 1.35;
}

.article-body p {
  margin: 0 0 20px;
  color: var(--muted);
}

.article-card-text .link-arrow {
  margin-top: auto;
}

.case-card {
  overflow: hidden;
  border: 0;
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 28px rgba(10, 37, 64, 0.06);
  transition: transform 240ms var(--ease), box-shadow 240ms var(--ease);
}

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

.case-media {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--light);
}

.case-media img {
  height: 100%;
  object-fit: cover;
  transition: transform 420ms var(--ease);
}

.case-card:hover .case-media img {
  transform: scale(1.04);
}

.case-body {
  padding: 24px;
}

.case-body h3 {
  margin: 14px 0 10px;
  color: var(--primary);
  font-size: 24px;
  line-height: 1.32;
}

.case-body p {
  margin: 0 0 18px;
  color: var(--muted);
}

.case-facts {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbff;
}

.case-facts span {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 10px;
  color: #405367;
}

.case-facts strong {
  color: var(--primary);
}

.case-metrics,
.case-result-list {
  display: grid;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.case-metrics li,
.case-result-list li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
}

.case-metrics li::before,
.case-result-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}

.case-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}

.case-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 28px 0 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.case-summary div {
  padding: 18px;
  background: var(--white);
}

.case-summary span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.case-summary strong {
  display: block;
  margin-top: 4px;
  color: var(--primary);
}

.article-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}

.article-content {
  max-width: 780px;
}

.article-content h1 {
  margin: 12px 0 18px;
  color: var(--primary);
  font-size: 46px;
  line-height: 1.18;
}

.article-cover {
  margin: 28px 0;
  overflow: hidden;
  border-radius: 8px;
  aspect-ratio: 16 / 9;
  background: var(--light);
}

.article-cover img {
  height: 100%;
  object-fit: cover;
}

.article-content h2 {
  margin: 36px 0 14px;
  color: var(--primary);
  font-size: 28px;
}

.article-content p {
  margin: 0 0 18px;
  color: #3d4d5f;
  font-size: 18px;
}

.article-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 28px);
  display: grid;
  gap: 18px;
}

.sidebar-panel {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.sidebar-panel h3 {
  margin: 0 0 14px;
  color: var(--primary);
}

.related-link {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-weight: 700;
}

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

.about-intro {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.about-copy h2 {
  margin: 0;
  color: var(--primary);
  font-size: 44px;
  line-height: 1.18;
}

.about-copy p {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.about-media {
  overflow: hidden;
  border-radius: 8px;
  aspect-ratio: 4 / 3;
}

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

.section-inline-media {
  overflow: hidden;
  margin: -12px 0 30px;
  border-radius: 8px;
  aspect-ratio: 16 / 6;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 48px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.metric-item {
  padding: 28px;
  background: var(--white);
}

.metric-item > span:first-child {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.metric-number {
  color: var(--primary);
  font-size: 38px;
  font-weight: 900;
  line-height: 1;
}

.metric-suffix {
  color: var(--orange);
  font-size: 24px;
  font-weight: 900;
}

.metric-item span:last-child {
  display: block;
  margin-top: 10px;
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 0;
  border-left: 2px solid var(--line);
  margin-left: 18px;
}

.timeline-item {
  position: relative;
  padding: 0 0 34px 34px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 6px #fff1eb;
}

.timeline-year {
  color: var(--blue);
  font-weight: 900;
}

.timeline-item h3 {
  margin: 6px 0 8px;
  color: var(--primary);
  font-size: 22px;
}

.timeline-item p {
  margin: 0;
  color: var(--muted);
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.cert-card {
  padding: 24px;
}

.cert-card strong {
  display: block;
  margin: 12px 0 8px;
  color: var(--primary);
  font-size: 19px;
}

.cert-card span {
  color: var(--muted);
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 34px;
  align-items: stretch;
}

.contact-stack {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
  grid-template-rows: repeat(3, auto) minmax(0, 1fr);
  align-content: start;
  height: 100%;
}

.contact-info-card {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 18px;
  min-height: 106px;
  padding: 22px 24px;
  align-items: center;
}

.contact-info-card .card-icon {
  width: 58px;
  height: 58px;
  margin-bottom: 0;
  border-radius: 9px;
}

.contact-info-card .card-icon svg {
  width: 30px;
  height: 30px;
}

.contact-info-card strong {
  display: block;
  color: var(--primary);
  font-size: 20px;
  line-height: 1.35;
}

.contact-info-card span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.contact-map-panel {
  grid-column: 1 / -1;
  display: grid;
  gap: 18px;
  padding: 26px;
  border-radius: 8px;
  background: var(--white);
  color: var(--primary);
  box-shadow: 0 10px 28px rgba(10, 37, 64, 0.06);
}

.contact-map-copy h2 {
  margin: 6px 0 10px;
  font-size: 28px;
}

.contact-map-copy p {
  margin: 0;
  color: var(--muted);
}

.contact-map-copy .section-eyebrow {
  color: var(--blue);
}

.contact-map-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid rgba(10, 37, 64, 0.08);
  border-radius: 10px;
  background: #eef4fb;
  aspect-ratio: 16 / 10;
}

.contact-map-frame img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.contact-map-actions {
  display: flex;
  justify-content: flex-start;
}

.wechat-panel {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 170px;
  gap: 22px;
  align-items: center;
  padding: 26px;
  border-radius: 8px;
  background: var(--white);
  color: var(--primary);
  box-shadow: 0 10px 28px rgba(10, 37, 64, 0.06);
}

.wechat-panel h2 {
  margin: 6px 0 10px;
  font-size: 28px;
}

.wechat-panel p {
  margin: 0;
  color: var(--muted);
}

.wechat-panel .section-eyebrow {
  color: var(--blue);
}

.wechat-panel .wechat-grid {
  grid-template-columns: 1fr;
}

.wechat-panel .qr-box {
  min-height: 158px;
  border: 0;
  background: transparent;
  overflow: visible;
}

.wechat-panel .qr-box > div {
  width: 100%;
  display: grid;
  place-items: center;
}

.wechat-panel .qr-mark {
  width: 150px;
  height: 150px;
  margin: 0;
  border-radius: 0;
  background: var(--white);
  overflow: visible;
}

.wechat-panel .qr-mark img {
  border-radius: 0;
  object-fit: contain;
}

.form-panel {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.form-panel h2 {
  margin: 0 0 22px;
  color: var(--primary);
  font-size: 30px;
}

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

.form-field {
  display: grid;
  gap: 8px;
}

.form-field.full {
  grid-column: 1 / -1;
}

.form-field label {
  color: var(--primary);
  font-weight: 800;
}

.form-field input,
.form-field textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 13px;
  color: var(--ink);
  background: var(--white);
  outline: 0;
  transition: border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

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

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.16);
}

.captcha-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 10px;
  align-items: center;
}

.captcha-code {
  min-width: 86px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--primary);
  color: var(--white);
  font-weight: 900;
}

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

.social-head {
  margin: 34px 0 18px;
}

.social-head .section-title {
  font-size: 28px;
}

.qr-box {
  display: grid;
  place-items: center;
  min-height: 150px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--primary);
  text-align: center;
  text-decoration: none;
}

.qr-mark {
  width: 96px;
  height: 96px;
  margin: 0 auto 12px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--light);
  color: var(--blue);
  overflow: hidden;
}

.qr-mark img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  background: var(--white);
}

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

.footer-main {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 1fr);
  gap: 38px;
  padding: 58px 0 42px;
}

.footer-brand p {
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.7);
}

.footer-col h3 {
  margin: 0 0 16px;
  font-size: 18px;
}

.footer-col a,
.footer-col span {
  display: block;
  margin: 9px 0;
  color: rgba(255, 255, 255, 0.68);
}

.footer-col a:hover {
  color: var(--white);
}

.socials {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.socials a {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
  color: var(--white);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 1300;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal.is-open {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(6, 22, 38, 0.72);
  backdrop-filter: blur(8px);
}

.modal-panel {
  position: relative;
  width: min(100%, 680px);
  max-height: calc(100svh - 48px);
  overflow: auto;
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 26px 72px rgba(0, 0, 0, 0.28);
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 28px;
  border-bottom: 1px solid var(--line);
}

.modal-head h2 {
  margin: 0;
  color: var(--primary);
  font-size: 26px;
}

.modal-body {
  padding: 28px;
}

.modal-close {
  color: var(--primary);
  border-color: var(--line);
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 1400;
  max-width: min(380px, calc(100% - 44px));
  padding: 16px 18px;
  border-radius: 8px;
  background: var(--primary);
  color: var(--white);
  box-shadow: var(--shadow);
  transform: translateY(24px);
  opacity: 0;
  pointer-events: none;
  transition: transform 240ms var(--ease), opacity 240ms var(--ease);
}

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

.empty-state {
  grid-column: 1 / -1;
  padding: 44px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  text-align: center;
  color: var(--muted);
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 520ms var(--ease), transform 520ms var(--ease);
}

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

.category-card.reveal,
.product-card.reveal {
  transition: opacity 520ms var(--ease), transform 300ms var(--ease), box-shadow 260ms var(--ease), background 260ms var(--ease);
}

.category-card.reveal.is-visible:hover,
.product-card.reveal.is-visible:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.matrix-grid .category-card.reveal.is-visible:hover {
  transform: none;
  box-shadow: none;
}

.delay-1 {
  transition-delay: 80ms;
}

.delay-2 {
  transition-delay: 160ms;
}

.delay-3 {
  transition-delay: 240ms;
}

@media (max-width: 1100px) {
  .header-inner {
    gap: 16px;
  }

  .brand {
    min-width: 368px;
  }

  .nav {
    gap: 0;
  }

  .nav-link {
    padding-right: 9px;
    padding-left: 9px;
    font-size: 15px;
  }

  .matrix-grid,
  .advantage-grid,
  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .matrix-grid .category-card {
    flex-basis: calc((min(100vw - 48px, var(--container)) - 18px) / 2);
  }

  .featured-grid,
  .related-product-grid,
  .product-grid,
  .article-grid,
  .case-grid,
  .scenario-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-grid.related-product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .solutions,
  .product-detail,
  .case-detail-layout,
  .article-detail-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .solution-media {
    min-height: 300px;
  }

  .form-panel,
  .detail-panel,
  .article-sidebar {
    position: static;
  }
}

@media (max-width: 900px) {
  :root {
    --header-h: 60px;
  }

  .container {
    width: min(100% - 32px, var(--container));
  }

  .section {
    padding: 48px 0;
  }

  .section-head {
    display: block;
  }

  .section-title,
  .page-title {
    font-size: 38px;
  }

  .section-lede,
  .page-lede {
    font-size: 16px;
  }

  .header-inner {
    gap: 14px;
  }

  .brand {
    min-width: 0;
    max-width: calc(100vw - 94px);
  }

  .brand-name {
    font-size: clamp(17px, 5vw, 21px);
  }

  .nav {
    position: fixed;
    left: 0;
    right: 0;
    top: var(--header-h);
    height: calc(100svh - var(--header-h));
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 18px 24px 30px;
    background: rgba(10, 37, 64, 0.9);
    -webkit-backdrop-filter: saturate(170%) blur(20px);
    backdrop-filter: saturate(170%) blur(20px);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 240ms var(--ease), opacity 240ms var(--ease), visibility 240ms var(--ease);
  }

  body.menu-open .nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    padding: 18px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 18px;
  }

  .nav-item {
    display: grid;
  }

  .nav-link::after {
    left: 0;
    right: auto;
    width: 48px;
    bottom: 12px;
  }

  .nav-submenu {
    position: static;
    min-width: 0;
    display: grid;
    gap: 2px;
    padding: 6px 0 10px 14px;
    border: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-submenu a {
    padding: 8px 0;
    color: rgba(255, 255, 255, 0.68);
    font-size: 15px;
  }

  .header-actions .btn {
    display: none;
  }

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

  .hero {
    min-height: clamp(500px, 74svh, 620px);
    background-position: 62% center;
  }

  .hero::before {
    background:
      linear-gradient(90deg, rgba(10, 37, 64, 0.94), rgba(10, 37, 64, 0.66)),
      linear-gradient(180deg, rgba(10, 37, 64, 0.44), rgba(10, 37, 64, 0.78));
  }

  .hero-inner {
    width: min(100% - 32px, var(--container));
  }

  .matrix-grid .category-card {
    flex-basis: calc((100vw - 32px - 18px) / 2);
  }

  .hero h1 {
    font-size: 40px;
  }

  .hero p {
    font-size: 17px;
  }

  .page-hero {
    padding: 104px 0 40px;
  }

  .solutions,
  .about-intro,
  .cta-inner,
  .cta-inner.has-media,
  .footer-main {
    grid-template-columns: 1fr;
  }

  .solution-media {
    min-height: 280px;
    aspect-ratio: 16 / 10;
    height: auto;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-main {
    gap: 26px;
  }
}

@media (max-width: 640px) {
  .section-title,
  .page-title {
    font-size: 34px;
  }

  .matrix-scroll {
    --matrix-card-height: 256px;
  }

  .hero-actions,
  .product-actions,
  .cta-inner {
    align-items: stretch;
  }

  .solution-list {
    --solution-index-col: 54px;
    --solution-content-gap: 16px;
  }

  .solution-list .section-head {
    padding-left: 0;
  }

  .solution-index {
    width: 48px;
    height: 48px;
    font-size: 16px;
  }

  .solution-row h3 {
    font-size: 20px;
    line-height: 1.15;
  }

  .solution-row p {
    font-size: 15px;
    line-height: 1.35;
  }

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

  .hero-carousel-arrow {
    width: 38px;
    height: 38px;
  }

  .hero-carousel-arrow.is-prev {
    left: 14px;
  }

  .hero-carousel-arrow.is-next {
    right: 14px;
  }

  .hero-carousel-dots {
    bottom: 18px;
    gap: 7px;
    padding: 7px 9px;
  }

  .hero-carousel-dots button {
    width: 24px;
  }

  .hero-carousel-dots button.is-active {
    width: 34px;
  }

  .matrix-arrow {
    width: 40px;
    height: 40px;
  }

  .matrix-arrow.is-prev {
    left: 8px;
  }

  .matrix-arrow.is-next {
    right: 8px;
  }

  .matrix-grid,
  .advantage-grid,
  .featured-grid,
  .related-product-grid,
  .product-grid,
  .article-grid,
  .case-grid,
  .case-summary,
  .scenario-list,
  .download-grid,
  .cert-grid,
  .wechat-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .matrix-grid .category-card {
    flex-basis: calc(100vw - 32px);
  }

  .product-grid.related-product-grid {
    grid-template-columns: 1fr;
  }

  .filter-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }

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

  .captcha-row input {
    grid-column: 1 / -1;
  }

  .category-card,
  .advantage-card,
  .product-body,
  .article-body,
  .form-panel {
    padding: 22px;
  }

  .detail-panel {
    padding: 18px;
  }

  .category-card {
    min-height: 256px;
    padding: 0;
  }

  .category-content {
    padding: 78px 18px 16px;
  }

  .contact-info-card {
    grid-template-columns: 54px 1fr;
  }

  .contact-info-card .card-icon {
    width: 54px;
    height: 54px;
  }

  .contact-info-card .card-icon svg {
    width: 28px;
    height: 28px;
  }

  .contact-stack,
  .wechat-panel {
    grid-template-columns: 1fr;
  }

  .contact-map-panel,
  .wechat-panel {
    padding: 22px;
  }

  .contact-map-copy h2 {
    font-size: 26px;
  }

  .contact-map-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .article-content h1 {
    font-size: 34px;
  }

  .footer-bottom {
    display: block;
  }

  .footer-bottom span {
    display: block;
    margin-bottom: 8px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
    scroll-behavior: auto !important;
  }

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