* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
:root {
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 16px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 12px 24px rgba(15, 23, 42, 0.12);
}
body.dark-mode {
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.5);
}
body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  letter-spacing: -0.3px;
}
header {
  background-color: var(--bg-primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0 auto;
}
.logo-container {
  display: flex;
  align-items: center;
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 700;
  transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
  flex-shrink: 0;
}
.logo-container:hover {
  opacity: 0.8;
}
.logo-img {
  flex-shrink: 0;
}
.nav-right {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  list-style: none;
}
.nav-links a {
  text-decoration: none;
  transition: color 0.3s ease;
  position: relative;
}
.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-primary);
  transition: width 0.3s ease;
}
.nav-links a:hover::after {
  width: 100%;
}
.theme-toggle {
  cursor: pointer;
  transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.theme-toggle:hover {
  background-color: var(--accent-light);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}
.section-title {
  color: var(--text-primary);
}
footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
}
.footer-content {
  margin: 0 auto;
}
.footer-grid {
  display: grid;
}
.footer-section p,
.footer-section a {
  text-decoration: none;
  transition: color 0.3s ease;
}
.beian-section {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  padding: 1rem 0;
}
.beian-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.beian-item a {
  text-decoration: none;
  transition: color 0.3s ease;
}
.footer-bottom {
  text-align: center;
}
@media (max-width: 1024px) {
  .section-title {
    font-size: 2.2rem;
  }
  nav {
    padding: 0.875rem 1.5rem;
  }
  .main-content {
    padding: 0 1.5rem;
  }
}
@media (max-width: 768px) {
  nav {
    flex-wrap: wrap;
    gap: 1rem;
    padding: 0.75rem 1rem;
  }
  .logo-container {
    font-size: 1.1rem;
    gap: 0.5rem;
  }
  .logo-img {
    width: 28px;
    height: 28px;
  }
  .nav-right {
    width: 100%;
    justify-content: space-between;
    gap: 1rem;
  }
  .nav-links {
    gap: 1rem;
    font-size: 0.8rem;
    flex-wrap: wrap;
  }
  .section-title {
    font-size: 1.75rem;
    margin: 2rem 0 1.5rem;
  }
  .main-content {
    margin: 2rem auto;
    padding: 0 1rem;
  }
  footer {
    padding: 2rem 1rem 0.75rem;
    margin-top: 3rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
  }
  .beian-section {
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 0.75rem;
    padding: 0.75rem 0;
  }
  .beian-item {
    justify-content: center;
    font-size: 0.7rem;
  }
  .footer-section p {
    font-size: 0.8rem;
  }
  .footer-bottom {
    padding-top: 1rem;
    font-size: 0.75rem;
  }
}
@media (max-width: 480px) {
  .section-title {
    font-size: 1.5rem;
  }
  nav {
    padding: 0.5rem 0.75rem;
  }
  .logo-container {
    font-size: 1rem;
  }
  .logo-img {
    width: 24px;
    height: 24px;
  }
  .nav-links a {
    font-size: 0.75rem;
  }
  .main-content {
    padding: 0 0.75rem;
  }
  footer {
    padding: 1.5rem 0.75rem 0.5rem;
  }
  .footer-grid {
    gap: 1rem;
  }
  .footer-section p {
    font-size: 0.75rem;
    line-height: 1.6;
  }
  .beian-section {
    padding: 0.5rem 0;
    margin-bottom: 0.5rem;
  }
  .beian-item {
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
  }
  .footer-bottom {
    padding-top: 0.5rem;
    font-size: 0.7rem;
  }
}
:root {
  --bg-primary: #fff;
}
body.dark-mode {
  --bg-primary: #111c26;
  --bg-secondary: #172632;
  --bg-tertiary: #203444;
  --accent-light: #203e52;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
body {
  font-family: "Noto Sans SC", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  cursor: pointer;
}
img {
  display: block;
  max-width: 100%;
}
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent-primary);
  outline-offset: 5px;
}
[hidden] {
  display: none !important;
}
.wrap {
  width: min(1240px,calc(100% - 80px));
  margin-inline: auto;
}
.section-pad {
  padding: 88px 0;
}
.skip-link {
  position: fixed;
  left: 15px;
  top: -100px;
  z-index: 2000;
  padding: 10px;
  background: var(--bg-primary);
}
.skip-link:focus {
  top: 10px;
}
header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
  box-shadow: none;
}
nav {
  max-width: 1400px;
  min-height: 90px;
  padding: 14px 40px;
  gap: 24px;
}
.logo-container {
  color: var(--text-primary);
  letter-spacing: 0;
}
.brand {
  display: flex;
  flex-direction: column;
}
.brand>span {
  font-size: 10px;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 1px;
}
.nav-right {
  gap: 26px;
}
.nav-links {
  gap: 28px;
}
.nav-links a {
  display: block;
  padding: 18px 0;
  color: var(--text-secondary);
}
.nav-links a:hover,
.nav-links a[aria-current=page] {
  color: var(--accent-primary);
}
.nav-links a[aria-current=page]:after {
  width: 100%;
  bottom: 5px;
}
.theme-toggle,
.menu-toggle {
  flex-shrink: 0;
}
.theme-toggle {
  border-radius: 50%;
}
.theme-toggle,
.menu-toggle {
  border: 1px solid var(--border-light);
  background: transparent;
  color: var(--text-secondary);
  width: 34px;
  height: 34px;
  padding: 0;
  font-size: 20px;
}
.menu-toggle {
  display: none;
  border-radius: 4px;
}
.home-hero {
  background: var(--bg-secondary);
  overflow: hidden;
}
.hero-inner {
  width: min(1240px,calc(100% - 80px));
  margin: auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 590px;
  align-items: center;
  gap: 35px;
}
.hero-copy {
  padding: 65px 0;
}
.hero-copy h1 {
  line-height: 1.35;
  letter-spacing: 1px;
}
.hero-copy h1 span {
  color: var(--accent-primary);
}
.hero-description {
  color: var(--text-secondary);
  margin: 24px 0 32px;
}
.hero-actions {
  display: flex;
  gap: 14px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  padding: 12px 25px;
  border: 1px solid var(--border-color);
  transition: background .2s,transform .2s;
}
.button:hover {
  transform: translateY(-2px);
}
.primary {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border-color: var(--accent-primary);
}
.outline {
  color: var(--text-primary);
  background: transparent;
}
.outline:hover {
  background: var(--accent-light);
}
.hero-art {
  position: relative;
  height: 480px;
  background-image: radial-gradient(var(--border-color) 1px,transparent 1px);
  background-size: 22px 22px;
}
.orbit {
  position: absolute;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
}
.orbit-one {
  width: 420px;
  height: 420px;
}
.orbit-two {
  width: 315px;
  height: 315px;
}
.hero-device {
  position: absolute;
  top: 60px;
  left: 50%;
  transform: translateX(-50%) rotate(-5deg);
  width: 260px;
  background: #fff;
  border: 1px solid #e2e8ed;
  box-shadow: 20px 30px 50px #163a5514;
  padding: 22px 15px 20px;
  color: #182b3b;
}
.hero-device img {
  width: 230px;
  height: 242px;
}
.device-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #e7ecf0;
  padding-top: 13px;
}
.art-node {
  position: absolute;
  z-index: 2;
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
  color: var(--text-secondary);
}
.art-node b {
  display: block;
  color: var(--accent-primary);
}
.node-one {
  top: 34px;
  left: 0;
}
.node-two {
  top: 165px;
  right: 0;
}
.node-three {
  bottom: 40px;
  left: 16px;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 25px;
  margin-bottom: 30px;
}
.section-heading h2,
.support-banner h2 {
  margin-bottom: 10px;
}
.support-banner h2 {
  font-weight: 600;
}
.section-heading h2,
.support-banner h2 {
  line-height: 1.5;
}
.section-heading h2 {
  font-size: 32px;
}
.section-heading p {
  color: var(--text-secondary);
}
.text-link {
  color: var(--accent-primary);
  display: inline-flex;
  align-items: center;
  gap: 20px;
}
.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 5px;
}
.product-filters {
  display: flex;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 30px;
}
.product-filters button {
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  padding: 12px 0;
}
.product-filters button.active {
  border-bottom-color: var(--accent-primary);
  color: var(--accent-primary);
}
.product-filters small {
  margin-left: 7px;
}
.products {
  display: grid;
  grid-template-columns: repeat(4,minmax(0,1fr));
  gap: 20px;
}
.product-card {
  border: 1px solid var(--border-light);
  background: var(--bg-primary);
  transition: box-shadow .25s,transform .25s;
}
.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}
.product-visual {
  height: 220px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.product-visual>img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #fff;
}
.product-model {
  color: var(--accent-primary);
}
.product-info h3 {
  margin: 5px 0 15px;
}
.product-spec {
  color: var(--accent-primary);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-light);
}
.product-info p {
  color: var(--text-secondary);
}
.product-info .text-link {
  display: flex;
  justify-content: space-between;
}
.solutions {
  background: var(--bg-secondary);
}
.solutions .solution-grid {
  gap: 24px;
  align-items: stretch;
}
.solutions .solution-grid article {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 28px;
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
}
.service-icon {
  display: block;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  color: var(--accent-primary);
  margin-bottom: 22px;
}
.solutions .solution-grid h3 {
  font-size: 21px;
  line-height: 1.5;
}
.solutions .solution-grid p {
  margin-bottom: 24px;
}
.solutions .solution-grid .text-link {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
}
#business { scroll-margin-top: 110px; }
.solution-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 52px;
}
.solution-grid h3 {
  margin-bottom: 15px;
}
.solution-grid p {
  color: var(--text-secondary);
  margin-bottom: 25px;
}
.support-banner {
  color: #fff;
  padding: 50px 0;
}
.support-banner .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}
.support-banner h2 {
  font-size: 26px;
}
.light {
  background: #fff;
  border-color: #fff;
}
footer {
  background: #132b3d;
  color: #b6c4cf;
  padding: 60px 40px 25px;
  margin-top: 0;
  border: 0;
}
.footer-content {
  max-width: 1240px;
}
.footer-grid {
  gap: 35px;
  margin-bottom: 38px;
}
.footer-section h4 {
  color: #fff;
  margin-bottom: 20px;
}
.beian-section {
  border-top: 1px solid #ffffff14;
  border-bottom: 0;
  padding-top: 20px;
  font-size: 11px;
  text-align: center;
  margin: 0;
}
.footer-bottom {
  padding-top: 9px;
}
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--accent-primary);
  z-index: 90;
}
.main-content {
  max-width: 1240px;
  margin: 60px auto;
  padding: 0 40px;
}
.section-title {
  font-size: 30px;
  margin: 35px 0;
  text-align: left;
}
.page-banner,
.download-hero {
  padding: 65px 40px;
  background: var(--bg-secondary);
  text-align: left;
}
.page-banner .wrap {
  width: min(1240px,100%);
}
.page-banner h1,
.download-hero h1 {
  font-size: 36px;
  margin-bottom: 15px;
}
.page-banner p,
.download-hero p {
  color: var(--text-secondary);
}
.download-hero-content {
  max-width: 1160px;
  margin: auto;
}
.download-hero p {
  margin-left: 0;
  max-width: none;
}
.download-hero:before {
  display: none;
}
.about-section {
  padding: 30px;
  border-radius: 0;
  background: var(--bg-primary);
  margin-bottom: 25px;
}
.info-box {
  padding: 25px;
  border-radius: 0;
  box-shadow: none;
}
.software-grid {
  gap: 25px;
}
.software-card {
  border-radius: 0;
  box-shadow: none;
  background: var(--bg-primary);
}
.software-card:before {
  height: 2px;
  background: var(--accent-primary);
}
.software-icon {
  width: 52px;
  height: 52px;
  border-radius: 0;
  font-size: 30px;
  background: var(--accent-light);
  color: var(--accent-primary);
}
.version-badge,
.download-btn,
.download-notice {
  border-radius: 0;
}
.download-btn {
  box-shadow: none;
}
.download-notice {
  background: var(--bg-secondary);
}
@media (max-width:1100px) {
  nav {
    padding: 15px 25px;
    gap: 15px;
  }
  .nav-links {
    gap: 18px;
  }
  .nav-right {
    gap: 18px;
  }
  .brand strong {
    font-size: 20px;
  }
  .brand strong small {
    display: none;
  }
  .hero-inner {
    gap: 10px;
  }
  .node-two {
    right: -15px;
  }
  .hero-device {
    width: 230px;
  }
  .hero-device img {
    height: 220px;
  }
  .orbit-one {
    width: 340px;
    height: 340px;
  }
  .product-info {
    padding: 20px 15px;
  }
  .products {
    gap: 14px;
  }
  .product-spec {
    font-size: 9px;
  }
  .software-aside {
    grid-template-columns: 1fr;
  }
  .download-btn {
    justify-self: start;
  }
}
@media (max-width:850px) {
  .wrap,
.hero-inner {
    width: calc(100% - 48px);
  }
  nav {
    min-height: 76px;
    flex-wrap: nowrap;
  }
  .logo-img {
    width: 36px;
    height: 36px;
  }
  .nav-right {
    width: auto;
    justify-content: flex-end;
  }
  .menu-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    padding: 12px 25px 22px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
  }
  .nav-links.is-open {
    display: flex;
    flex-direction: column;
    gap: 0;
  }
  .nav-links a {
    padding: 12px 0;
  }
  .nav-links a[aria-current=page]:after {
    display: none;
  }
  .hero-inner {
    min-height: 540px;
    grid-template-columns: 1.05fr 1fr;
  }
  .hero-copy h1 {
    font-size: 39px;
  }
  .hero-description {
    font-size: 14px;
  }
  .hero-art {
    height: 400px;
  }
  .hero-device {
    top: 55px;
    width: 200px;
    padding: 15px 12px;
  }
  .hero-device img {
    height: 200px;
  }
  .device-title {
    display: block;
  }
  .device-title span {
    display: block;
  }
  .node-one {
    top: 15px;
    left: 0;
  }
  .node-two {
    top: 145px;
    padding: 9px;
    right: -10px;
  }
  .node-three {
    bottom: 0;
    left: 0;
  }
  .art-node b {
    font-size: 10px;
  }
  .orbit-one {
    width: 290px;
    height: 290px;
  }
  .orbit-two {
    width: 230px;
    height: 230px;
  }
  .button {
    padding: 11px 18px;
    gap: 20px;
    font-size: 13px;
  }
  .products {
    grid-template-columns: repeat(2,minmax(0,1fr));
    gap: 20px;
  }
  .product-info {
    padding: 24px;
  }
  .product-info p {
    min-height: 45px;
  }
  .product-spec {
    font-size: 11px;
  }
  .section-pad {
    padding: 60px 0;
  }
  .solution-grid {
    gap: 25px;
  }
  .solution-grid h3 {
    font-size: 17px;
  }
  .solution-grid p {
    font-size: 12px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .main-content {
    padding: 0 24px;
  }
  .download-meta {
    grid-template-columns: 1fr;
  }
  .download-meta-item {
    flex-direction: row;
    justify-content: space-between;
  }
  .software-main-head {
    align-items: flex-start;
  }
  .software-body {
    padding: 25px;
  }
}
@media (max-width:600px) {
  html {
    scroll-padding-top: 80px;
  }
  .wrap,
.hero-inner {
    width: calc(100% - 40px);
  }
  nav {
    padding: 12px 20px;
    min-height: 72px;
    gap: 8px;
  }
  .brand strong {
    font-size: 20px;
  }
  .brand>span {
    font-size: 8px;
    letter-spacing: 0;
  }
  .nav-right {
    gap: 10px;
  }
  .theme-toggle,
.menu-toggle {
    width: 30px;
    height: 30px;
    font-size: 18px;
  }
  .logo-container {
    gap: 8px;
  }
  .logo-img {
    width: 32px;
    height: 32px;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .hero-copy {
    padding: 45px 0 15px;
  }
  .hero-copy h1 {
    font-size: 42px;
  }
  .hero-description {
    margin: 20px 0 24px;
  }
  .hero-art {
    height: 350px;
    max-width: 400px;
    width: 100%;
    margin: 0 auto 25px;
  }
  .hero-device {
    top: 30px;
    width: 210px;
  }
  .hero-device img {
    height: 200px;
  }
  .node-one {
    top: 10px;
    left: 0;
  }
  .node-two {
    right: 0;
    top: 130px;
  }
  .node-three {
    bottom: 8px;
  }
  .orbit-one {
    width: 290px;
    height: 290px;
  }
  .section-pad {
    padding: 48px 0;
  }
  .section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }
  .section-heading h2 {
    font-size: 27px;
  }
  .section-heading p {
    font-size: 12px;
  }
  .product-filters {
    gap: 23px;
    margin-bottom: 22px;
  }
  .product-filters button {
    font-size: 12px;
  }
  .products {
    gap: 14px;
  }
  .product-visual {
    height: 175px;
  }
  .product-info {
    padding: 16px 13px;
  }
  .product-info h3 {
    font-size: 16px;
    margin-bottom: 10px;
  }
  .product-model {
    font-size: 9px;
    letter-spacing: .3px;
  }
  .product-spec {
    font-size: 9px;
    min-height: 48px;
  }
  .product-info p {
    font-size: 11px;
    min-height: 80px;
    margin: 10px 0 15px;
  }
  .product-info .text-link {
    font-size: 11px;
  }
  .solution-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 15px;
  }
  .solution-grid article {
    position: relative;
    padding: 0 0 25px 60px;
    border-bottom: 1px solid var(--border-color);
  }
  .solution-grid article:last-child {
    border: 0;
    padding-bottom: 0;
  }
  .solution-grid h3 {
    font-size: 19px;
    margin-top: 8px;
  }
  .solution-grid p {
    font-size: 13px;
    margin-bottom: 16px;
  }
  .support-banner {
    padding: 36px 0;
  }
  .support-banner .wrap {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }
  .support-banner h2 {
    font-size: 23px;
  }
  .support-banner p {
    font-size: 12px;
  }
  footer {
    padding: 38px 20px 23px;
  }
  .footer-grid {
    gap: 28px 20px;
  }
  .footer-section h4 {
    margin-bottom: 12px;
    font-size: 12px;
  }
  .footer-section p,
.footer-section a {
    font-size: 10px;
  }
  .beian-section {
    font-size: 10px;
  }
  .footer-bottom {
    font-size: 9px;
  }
  .page-banner,
.download-hero {
    padding: 40px 20px;
  }
  .page-banner h1,
.download-hero h1 {
    font-size: 27px;
  }
  .page-banner p,
.download-hero p {
    font-size: 12px;
  }
  .main-content {
    margin: 35px auto;
    padding: 0 20px;
  }
  .section-title {
    font-size: 25px;
    margin: 25px 0;
  }
  .about-section {
    padding: 23px 20px;
  }
  .about-section p {
    font-size: 13px;
  }
  .software-grid {
    grid-template-columns: 1fr;
  }
  .software-main-head h2 {
    font-size: 19px;
  }
  .software-body {
    padding: 24px 20px;
  }
  .software-main-head {
    gap: 14px;
  }
  .software-icon {
    width: 42px;
    height: 42px;
  }
  .download-meta {
    grid-template-columns: repeat(3,minmax(0,1fr));
  }
  .download-meta-item {
    flex-direction: column;
    align-items: flex-start;
  }
  .download-meta-item .value {
    font-size: 11px;
  }
  .back-top {
    right: 16px;
    bottom: 16px;
    width: 36px;
    height: 36px;
  }
}
@media (max-width:360px) {
  .brand>span {
    display: none;
  }
  .hero-copy h1 {
    font-size: 36px;
  }
  .products {
    grid-template-columns: 1fr;
  }
  .product-info p {
    min-height: 0;
  }
}
@media (prefers-reduced-motion:reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
*:before,
*:after {
    transition: none !important;
    animation: none !important;
  }
}
:root {
  --text-primary: #101c28;
  --text-secondary: #293b4b;
  --text-tertiary: #405364;
  --accent-primary: #004b78;
  --accent-secondary: #00598b;
  --bg-secondary: #edf2f6;
  --bg-tertiary: #e2eaf1;
  --accent-light: #e0edf6;
  --border-color: #a8bac9;
  --border-light: #c4d0db;
}
body.dark-mode {
  --text-primary: #f5f8fc;
  --text-secondary: #e0e8f0;
  --text-tertiary: #c3d0dd;
  --accent-primary: #8bd2ff;
  --accent-secondary: #b2e1ff;
  --border-color: #60788c;
  --border-light: #435d72;
}
body {
  font-size: 16px;
  line-height: 1.85;
}
.nav-links a {
  font-size: 16px;
  font-weight: 600;
}
.hero-description {
  font-size: 18px;
  line-height: 1.9;
}
.button,
.text-link,
.product-info .text-link {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
}
.button {
  min-height: 48px;
}
.art-node,
.art-node b,
.device-title span {
  font-size: 13px;
}
.art-node {
  padding: 12px 14px;
}
.device-title {
  flex-wrap: wrap;
  gap: 4px;
}
.device-title strong {
  font-size: 16px;
}
.section-heading p,
.page-banner p,
.download-hero p,
.solution-grid p,
.about-section p,
.info-box p,
.software-desc,
.feature-list li,
.download-notice li {
  font-size: 16px;
  line-height: 1.9;
}
.product-filters {
  flex-wrap: wrap;
  gap: 12px 28px;
}
.product-filters button {
  font-size: 16px;
  font-weight: 600;
  min-height: 48px;
}
.product-filters small {
  font-size: 13px;
}
.product-info {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 24px 20px;
}
.product-card {
  display: flex;
  flex-direction: column;
}
.product-model {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .3px;
}
.product-info h3 {
  font-size: 21px;
  font-weight: 600;
}
.product-spec {
  font-size: 14px;
  line-height: 1.8;
  min-height: 0;
}
.product-info p {
  font-size: 16px;
  line-height: 1.85;
  margin: 16px 0 24px;
}
.product-info .text-link {
  margin-top: auto;
}
.solution-grid h3,
.about-section h3,
.software-main-head h2 {
  font-size: 22px;
  font-weight: 600;
}
.info-box h4 {
  font-size: 18px;
  font-weight: 600;
}
.support-banner p {
  font-size: 16px;
}
.version-badge,
.download-meta-item,
.download-meta-item .value {
  font-size: 15px;
  line-height: 1.8;
}
.download-meta {
  grid-template-columns: 1fr;
  gap: 10px;
}
.download-meta-item {
  flex-direction: row;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
}
.download-btn {
  font-size: 17px;
  min-height: 48px;
}
.footer-section h4 {
  font-size: 17px;
  font-weight: 600;
}
.footer-section p,
.footer-section a {
  font-size: 15px;
  line-height: 2;
}
.beian-item a,
.footer-bottom {
  font-size: 14px;
}
.hero-copy h1,
.section-heading h2,
.section-title,
.page-banner h1,
.download-hero h1 {
  font-weight: 700;
}
.product-spec,
.art-node b {
  font-weight: 500;
}
.device-title strong {
  color: #172b3d;
}
.device-title span {
  color: #34495a;
}
.hero-device {
  border-color: #a8bac9;
}
.device-title {
  border-top-color: #c4d0db;
}
.support-banner {
  background: #00456f;
}
.support-banner p {
  color: #f1f7fc;
}
.light {
  color: #00416a;
}
.footer-section p,
.footer-section a {
  color: #e1eaf2;
}
.beian-item a,
.footer-bottom {
  color: #cddae5;
}
.beian-section {
  border-top-color: #4a6275;
}
.footer-section a:hover,
.beian-item a:hover {
  color: #fff;
}
@media (min-width: 851px) and (max-width: 1200px) {
  nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 24px;
  }
  .nav-links {
    gap: 24px;
  }
  .nav-links a {
    padding: 10px 0;
  }
}
@media (max-width: 1100px) {
  .products {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .solution-grid {
    gap: 28px;
  }
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 850px) {
  .brand > span {
    font-size: 11px;
  }
  .nav-links a {
    font-size: 17px;
    padding: 13px 0;
  }
  .solution-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .solution-grid article {
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
  }
  .solution-grid article:last-child {
    border: 0;
  }
}
@media (max-width: 600px) {
  .brand > span {
    display: none;
  }
  .theme-toggle,
.menu-toggle {
    width: 40px;
    height: 40px;
    font-size: 22px;
  }
  .hero-description {
    font-size: 17px;
  }
  .products {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .product-visual {
    height: 230px;
  }
  .product-info {
    padding: 24px;
  }
  .product-info h3 {
    font-size: 22px;
  }
  .section-heading h2 {
    font-size: 28px;
  }
  .solution-grid article {
    padding-left: 0;
  }
  .software-main-head h2 {
    font-size: 21px;
  }
  .software-main-head {
    flex-wrap: wrap;
  }
  .footer-grid {
    gap: 28px;
  }
  .footer-section h4 {
    margin-bottom: 10px;
  }
  .footer-bottom {
    line-height: 1.9;
  }
}
.brand {
  align-items: flex-start;
  text-align: left;
  gap: 7px;
}
.brand strong {
  display: flex;
  align-items: baseline;
  justify-content: flex-start;
  gap: 8px;
  white-space: nowrap;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 1px;
}
.brand strong small {
  margin-left: 0;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--accent-primary);
}
.brand > span {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.5;
  color: var(--text-secondary);
  white-space: nowrap;
}
.logo-container {
  gap: 16px;
}
.logo-img {
  width: 42px;
  height: 48px;
  object-fit: contain;
}
.footer-grid {
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
}
.hero-copy h1 {
  font-size: clamp(36px, 4.1vw, 60px);
}
.hero-copy .hero-description {
  margin: 22px 0 30px;
}
.product-info p {
  min-height: 0;
}
.hero-device img {
  object-fit: contain;
}
.product-info .text-link {
  padding-top: 8px;
}
.solution-grid {
  margin-top: 24px;
}
.business-list {
  padding-left: 22px;
  color: var(--text-secondary);
}
.business-list li {
  padding: 5px 0;
}
.software-main-head h2 {
  margin-bottom: 0;
}
.software-desc {
  margin-bottom: 24px;
}
@media (max-width: 850px) {
  .brand strong {
    font-size: 22px;
  }
  .logo-container {
    gap: 12px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-section:first-child {
    grid-column: auto;
  }
}
@media (max-width: 600px) {
  .brand {
    gap: 0;
  }
  .brand strong {
    font-size: 22px;
  }
  .logo-container {
    gap: 10px;
  }
  .logo-img {
    width: 30px;
    height: 36px;
  }
  .hero-copy h1 {
    font-size: 36px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 850px) {
  .nav-links.is-open {
    max-height: calc(100dvh - 90px);
    overflow-y: auto;
    overscroll-behavior: contain;
  }
  .theme-toggle, .menu-toggle {
    min-width: 44px;
    min-height: 44px;
  }
}
@media (max-width: 600px) {
  .hero-art { height: 400px; }
  .hero-device { top: 20px; }
  .art-node {
    top: auto;
    bottom: 0;
    width: calc((100% - 16px) / 3);
    min-height: 78px;
    padding: 9px 7px;
    font-size: 12px;
  }
  .art-node b {
    font-size: 12px;
    overflow-wrap: anywhere;
  }
  .node-one { left: 0; }
  .node-two { left: calc((100% + 8px) / 3); right: auto; }
  .node-three { left: calc((100% + 8px) * 2 / 3); }
}