:root {
  color-scheme: light;
  --ink: #191b1a;
  --muted: #737977;
  --accent: #287c72;
  --line: #e8ecea;
  --mint: #eafff7;
  --page: 1240px;
  --radius: 18px;
  font-family: Inter, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  color: var(--ink);
  background: #fff;
  font-synthesis: none;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 28px;
  scrollbar-width: thin;
  scrollbar-color: #aeb5b1 #f6f8f7;
}
body {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
}
a:focus-visible,
button:focus-visible {
  outline: 3px solid #468f83;
  outline-offset: 5px;
}
h1,
h2,
h3,
p,
figure {
  margin: 0;
}
h1,
h2,
h3 {
  line-height: 1.3;
  letter-spacing: -0.04em;
}
h2 {
  font-size: clamp(27px, 3.4vw, 44px);
  font-weight: 700;
}
h3 {
  font-size: 25px;
  font-weight: 650;
}
section[id],
article[id] {
  scroll-margin-top: 28px;
}
.container {
  width: calc(100% - 96px);
  max-width: var(--page);
  margin-inline: auto;
}
.icon {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 20;
  background: white;
  padding: 12px 24px;
  border: 1px solid var(--line);
}
.skip-link:focus {
  top: 12px;
}
.site-header {
  border-bottom: 1px solid #eef0ef;
  background: #fff;
}
.header-inner {
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand {
  display: inline-flex;
  flex-shrink: 0;
}
.brand img {
  width: 126px;
  height: 40px;
}
.main-nav {
  display: flex;
  gap: 42px;
  margin-left: 70px;
}
.main-nav a,
.login-link {
  font-size: 15px;
}
.main-nav a:hover,
.login-link:hover,
.site-footer a:hover {
  color: var(--accent);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 32px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 12px 32px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  color: white;
  background: var(--ink);
  font-size: 16px;
  font-weight: 550;
  line-height: 1.6;
  transition:
    background 0.18s,
    transform 0.18s;
}
.button:hover {
  background: #353a37;
  transform: translateY(-2px);
}
.button-small {
  min-height: 42px;
  padding: 8px 24px;
  font-size: 14px;
}
.menu-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 8px;
}
.hero {
  padding-top: 94px;
  overflow: hidden;
}
.hero-copy {
  text-align: center;
}
.hero h1 {
  font-size: clamp(38px, 4.9vw, 66px);
  letter-spacing: -0.065em;
  font-weight: 750;
  line-height: 1.3;
}
.hero-description {
  font-size: 21px;
  line-height: 1.85;
  color: var(--muted);
  margin: 24px auto 32px;
}
.demo-link {
  display: table;
  margin: 16px auto 0;
  color: var(--accent);
  font-size: 15px;
}
.demo-link:hover {
  text-decoration: underline;
  text-underline-offset: 5px;
}
.product-preview {
  width: 94%;
  max-width: 1320px;
  margin: 32px auto 0;
}
.product-preview a {
  display: block;
  border-radius: 16px;
}
.product-preview img {
  width: 100%;
  height: auto;
  /* 原图自带外圈光晕，裁切到软件界面边缘。 */
  clip-path: inset(5.65% 3.8% round 12px);
}
.product-preview figcaption {
  color: var(--muted);
  text-align: center;
  font-size: 12px;
}
.features {
  padding: 48px 0 0;
  text-align: center;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 64px;
  margin-top: 52px;
}
.feature-icon {
  width: 52px;
  height: 52px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.55;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-bottom: 18px;
}
.feature h3 {
  font-size: 26px;
}
.feature p {
  color: var(--muted);
  margin-top: 16px;
  font-size: 17px;
  line-height: 1.9;
}
.industries {
  padding-top: 96px;
  padding-bottom: 52px;
  text-align: center;
}
.section-description {
  font-size: 19px;
  color: var(--muted);
  margin-top: 18px;
}
.industry-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px 20px;
  max-width: 948px;
  margin: 32px auto 28px;
}
.industry-tab {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 49px;
  padding: 9px 14px;
  border: 1px solid #d9dfdc;
  border-radius: 999px;
  font-size: 16px;
  line-height: 1.4;
  transition:
    background 0.16s,
    color 0.16s;
}
.industry-tab:hover {
  background: #f1f6f3;
}
.industry-tab.is-active {
  color: #fff;
  border-color: var(--ink);
  background: var(--ink);
}
.industry-panel {
  display: grid;
  grid-template-columns: 1.06fr 1fr;
  gap: 42px;
  align-items: center;
  text-align: left;
  padding: 28px;
  background: #f6f8f7;
  border-radius: var(--radius);
}
.industry-panel[hidden] {
  display: none;
}
.industry-panel:not([hidden]) ~ .industry-panel:not([hidden]) {
  margin-top: 24px;
}
.industry-panel figure img {
  width: 100%;
  aspect-ratio: 1.65;
  object-fit: cover;
  border-radius: 10px;
}
.industry-panel figcaption {
  font-size: 12px;
  color: var(--muted);
  padding-top: 7px;
  line-height: 1.5;
}
.industry-copy {
  padding: 8px 16px 24px 0;
}
.industry-copy h3 {
  font-size: clamp(24px, 2.5vw, 34px);
  letter-spacing: -0.04em;
  line-height: 1.45;
}
.industry-copy p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
  margin-top: 20px;
}
.text-link {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  font-size: 16px;
  color: var(--accent);
  margin-top: 26px;
}
.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 5px;
}
.team {
  text-align: center;
  padding: 44px 0;
}
.team h2 {
  font-size: 35px;
}
.team p {
  color: var(--muted);
  font-size: 17px;
  margin-top: 18px;
}
.download {
  text-align: center;
  padding: 72px 0 54px;
}
.download h2 {
  font-size: 42px;
  margin-bottom: 28px;
}
.download-options {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.download-options .button {
  min-width: 210px;
}
.site-footer {
  border-top: 1px solid var(--line);
  padding-top: 36px;
  padding-bottom: 24px;
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.25fr) minmax(0, 0.65fr);
  align-items: start;
  gap: 64px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}
.footer-top .brand img {
  width: 114px;
  height: 36px;
}
.footer-brand p {
  font-size: 13px;
  color: var(--muted);
}
.footer-top nav {
  display: grid;
  grid-template-columns: repeat(2, auto);
  justify-self: end;
  gap: 4px 28px;
  font-size: 13px;
  color: var(--muted);
}
.footer-top nav a {
  display: flex;
  align-items: center;
  min-height: 36px;
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 24px;
  margin-top: 32px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}
.footer-bottom > div {
  display: contents;
}
.footer-bottom [hidden] {
  display: none;
}
.footer-contact {
  min-width: 0;
}
.contact-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}
.contact-group h3 {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.5;
}
.contact-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 36px;
}
.contact-row strong {
  font-weight: 500;
  font-size: 14px;
}
/* 号码本身作为操作入口，保留原文字颜色和触控高度。 */
.copy-button,
.contact-row a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  border: 0;
  background: transparent;
  color: var(--ink);
  padding: 4px 0;
  font-size: 13px;
  white-space: nowrap;
}
.copy-button:hover,
.contact-row a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}
/* 复制提示占用组下方留白，避免空提示撑高整个页脚。 */
.contact-details {
  position: relative;
}
.copy-status {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  line-height: 1.5;
  font-size: 12px;
  margin-top: 4px;
}

@media (min-width: 1600px) {
  .hero {
    padding-top: 104px;
  }
  .hero h1 {
    font-size: 72px;
  }
  .hero-description {
    font-size: 22px;
  }
  .product-preview {
    margin-top: 44px;
  }
}
@media (max-width: 1000px) {
  .container {
    width: calc(100% - 56px);
  }
  .main-nav {
    margin-left: 0;
    gap: 24px;
  }
  .header-actions {
    gap: 20px;
  }
  .hero {
    padding-top: 76px;
  }
  .hero-description {
    font-size: 18px;
  }
  .feature-grid {
    gap: 25px;
  }
  .feature h3 {
    font-size: 22px;
  }
  .feature p {
    font-size: 15px;
  }
  .industries {
    padding-top: 76px;
  }
  .industry-panel {
    gap: 26px;
    padding: 22px;
  }
  .industry-copy p {
    font-size: 15px;
  }
  .industry-copy {
    padding: 0;
  }
  .footer-top {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 28px 48px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}
@media (min-width: 701px) and (max-width: 1000px) {
  .header-inner {
    height: 60px;
  }
  .brand img {
    width: 100px;
    height: 32px;
  }
  .main-nav a,
  .login-link {
    font-size: 13px;
  }
  .header-actions .button {
    font-size: 12px;
    min-height: 36px;
    padding: 7px 20px;
  }
  .hero {
    padding-top: 57px;
  }
  .hero h1 {
    font-size: 44px;
  }
  .hero-description {
    font-size: 17px;
    line-height: 1.75;
    margin: 18px auto 25px;
  }
  .button {
    min-height: 43px;
    font-size: 14px;
    padding: 8px 25px;
  }
  .demo-link {
    font-size: 13px;
    margin-top: 12px;
  }
  .product-preview {
    width: 100%;
    margin-top: 17px;
  }
  .features {
    padding-top: 24px;
  }
  .features h2,
  .industries h2 {
    font-size: 31px;
  }
  .feature-grid {
    margin-top: 35px;
  }
  .feature-icon {
    width: 42px;
    height: 42px;
    margin-bottom: 12px;
  }
  .feature h3 {
    font-size: 20px;
  }
  .feature p {
    font-size: 14px;
    margin-top: 12px;
  }
  .industries {
    padding-top: 65px;
    padding-bottom: 30px;
  }
  .section-description {
    font-size: 16px;
    margin-top: 14px;
  }
  .industry-tabs {
    max-width: 620px;
    gap: 12px 15px;
    margin: 26px auto 22px;
  }
  .industry-tab {
    min-height: 39px;
    font-size: 13px;
    padding: 7px 10px;
  }
  .industry-copy h3 {
    font-size: 25px;
  }
  .industry-copy p {
    font-size: 14px;
    margin-top: 16px;
  }
  .text-link {
    font-size: 14px;
    margin-top: 20px;
  }
  .team {
    padding: 30px 0;
  }
  .team h2 {
    font-size: 29px;
  }
  .team p {
    font-size: 14px;
    margin-top: 13px;
  }
  .download {
    padding: 48px 0 38px;
  }
  .download h2 {
    font-size: 33px;
    margin-bottom: 23px;
  }
  .site-footer {
    padding-top: 24px;
    padding-bottom: 24px;
  }
}
@media (max-width: 700px) {
  .container {
    width: calc(100% - 40px);
  }
  .header-inner {
    height: 68px;
    gap: 16px;
  }
  .brand img {
    width: 100px;
    height: 32px;
  }
  .header-actions {
    gap: 14px;
  }
  .header-actions .button {
    min-height: 36px;
    padding: 7px 15px;
    font-size: 12px;
  }
  .login-link {
    font-size: 13px;
  }
  .menu-toggle {
    display: grid;
    place-items: center;
  }
  .site-header {
    position: relative;
    z-index: 2;
  }
  .main-nav {
    position: absolute;
    inset: 68px 0 auto;
    display: none;
    flex-direction: column;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 16px 20px #23362908;
    padding: 12px 20px;
  }
  .main-nav.is-open {
    display: flex;
  }
  .main-nav a {
    padding: 12px 8px;
  }
  .hero {
    padding-top: 60px;
  }
  .hero h1 {
    font-size: clamp(31px, 6.4vw, 44px);
    letter-spacing: -0.055em;
    white-space: nowrap;
  }
  .hero-description {
    font-size: 15px;
    line-height: 1.9;
    margin: 22px 0 27px;
  }
  .hero-description br {
    display: none;
  }
  .hero-description {
    max-width: 390px;
    margin-inline: auto;
  }
  .button {
    font-size: 15px;
    min-height: 49px;
    padding: 11px 27px;
  }
  .demo-link {
    font-size: 13px;
    margin-top: 13px;
  }
  .product-preview {
    width: 100%;
    margin-top: 28px;
  }
  .features {
    padding-top: 36px;
  }
  .features h2 {
    font-size: 25px;
  }
  .feature-grid {
    gap: 16px;
    margin-top: 33px;
  }
  .feature-icon {
    width: 36px;
    height: 36px;
    margin-bottom: 12px;
  }
  .feature h3 {
    font-size: 16px;
    letter-spacing: -0.055em;
  }
  .feature p {
    font-size: 13px;
    line-height: 1.8;
    margin-top: 12px;
  }
  .feature p br {
    display: none;
  }
  .industries {
    padding-top: 58px;
    padding-bottom: 34px;
  }
  .industries h2 {
    font-size: 27px;
    line-height: 1.5;
    max-width: 420px;
    margin-inline: auto;
    text-wrap: balance;
  }
  .section-description {
    font-size: 15px;
    margin-top: 12px;
  }
  .industry-tabs {
    gap: 10px;
    margin: 25px auto 20px;
    grid-template-columns: repeat(2, 1fr);
  }
  .industry-tab {
    min-height: 43px;
    font-size: 14px;
    padding: 9px 8px;
  }
  .industry-panel {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 17px;
  }
  .industry-panel figure img {
    aspect-ratio: 1.6;
  }
  .industry-copy {
    padding: 0 5px 10px;
  }
  .industry-copy h3 {
    font-size: 25px;
  }
  .industry-copy p {
    font-size: 14px;
    margin-top: 12px;
  }
  .text-link {
    font-size: 14px;
    margin-top: 18px;
  }
  .team {
    padding: 36px 0;
  }
  .team h2 {
    font-size: 27px;
  }
  .team p {
    font-size: 14px;
    max-width: 320px;
    margin: 15px auto 0;
  }
  .download {
    padding: 49px 0 42px;
  }
  .download h2 {
    font-size: 28px;
    line-height: 1.5;
    margin-bottom: 23px;
    text-wrap: balance;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-top .brand img {
    width: 100px;
    height: 32px;
  }
  .footer-brand p {
    display: block;
    font-size: 12px;
  }
  .footer-top nav {
    grid-template-columns: repeat(4, auto);
    width: 100%;
    justify-content: space-between;
    gap: 12px;
    font-size: 13px;
  }
  .site-footer {
    padding-top: 26px;
    padding-bottom: 26px;
  }
  .footer-bottom {
    font-size: 11px;
  }
  .contact-row strong {
    font-size: 15px;
  }
}
@media (max-width: 370px) {
  .container {
    width: calc(100% - 32px);
  }
  .login-link {
    display: none;
  }
  .header-actions {
    gap: 8px;
  }
  .hero h1 {
    font-size: 28px;
  }
  .features h2 {
    font-size: 23px;
  }
  .feature h3 {
    font-size: 14px;
  }
  .feature-grid {
    gap: 12px;
  }
  .feature p {
    font-size: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

@media (max-width: 700px) {
  .contact-list {
    gap: 20px;
  }
}