:root {
  --ink: #101312;
  --ink-soft: #1a1e1c;
  --paper: #f5f6f3;
  --white: #ffffff;
  --muted: #6d746f;
  --line: #d7dcd8;
  --blue: #1656d9;
  --signal: #e8ff4c;
  --header-height: 76px;
  --page-width: 1360px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: "Inter", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

button {
  color: inherit;
  font: inherit;
}

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

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  display: grid;
  width: 100%;
  height: var(--header-height);
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 clamp(22px, 4.5vw, 72px);
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  transition: color 220ms ease, background-color 220ms ease;
}

.site-header.scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: var(--line);
  backdrop-filter: blur(14px);
}

.company-name {
  display: grid;
  justify-self: start;
  justify-items: center;
  gap: 2px;
  min-width: 52px;
  text-align: center;
}

.company-name strong {
  font-size: 16px;
  line-height: 1.1;
}

.company-name span {
  width: 100%;
  font-size: 8px;
  font-weight: 600;
  text-align: center;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(24px, 3vw, 48px);
}

.desktop-nav > a {
  position: relative;
  padding: 9px 0;
  font-size: 13px;
  font-weight: 500;
}

.desktop-nav > a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  content: "";
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

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

.nav-products {
  display: flex;
  align-items: center;
}

.products-trigger {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 0;
  cursor: pointer;
  color: inherit;
  border: 0;
  background: transparent;
  font-size: 13px;
  font-weight: 500;
}

.products-trigger svg {
  width: 14px;
  transition: transform 180ms ease;
}

.product-mega {
  position: fixed;
  z-index: 95;
  top: var(--header-height);
  left: 0;
  visibility: hidden;
  width: 100%;
  min-height: 330px;
  color: var(--white);
  background: #090c0b;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 180ms ease, transform 180ms ease, visibility 180ms;
}

.nav-products:hover .product-mega,
.nav-products.open .product-mega {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.nav-products:hover .products-trigger svg,
.nav-products.open .products-trigger svg {
  transform: rotate(180deg);
}

.product-mega-inner {
  display: grid;
  width: min(850px, calc(100% - 48px));
  grid-template-columns: 190px 1fr;
  gap: 70px;
  padding: 42px 0 55px;
  margin: 0 auto;
}

.product-menu-index {
  display: grid;
  align-content: start;
  gap: 15px;
}

.product-menu-index strong {
  margin-bottom: 12px;
  font-size: 13px;
}

.product-menu-index a {
  color: #a7aea9;
  font-size: 13px;
}

.product-menu-index a.active,
.product-menu-index a:hover {
  color: var(--white);
}

.product-series {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: start;
  gap: 54px;
}

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

.product-group h3 {
  margin: 0;
  padding-bottom: 13px;
  border-bottom: 1px solid #4a514d;
  color: #a7aea9;
  font-size: 11px;
  font-weight: 700;
}

.product-group a {
  display: grid;
  min-height: 104px;
  align-content: center;
  gap: 8px;
  border-bottom: 1px solid #303532;
}

.product-group a:hover span,
.product-group a.current-product span {
  color: var(--signal);
}

.product-group span {
  font-size: 20px;
  font-weight: 600;
}

.product-group small {
  color: #777f7a;
  font-size: 10px;
}

.header-contact {
  display: inline-flex;
  align-items: center;
  justify-self: end;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
}

.header-contact svg {
  width: 17px;
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  cursor: pointer;
  place-items: center;
  border: 0;
  background: transparent;
}

.menu-button svg {
  width: 21px;
}

.mobile-menu {
  position: fixed;
  z-index: 90;
  inset: var(--header-height) 0 auto;
  visibility: hidden;
  padding: 12px 24px 30px;
  color: var(--white);
  background: var(--ink);
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 180ms ease, transform 180ms ease, visibility 180ms;
}

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

.mobile-menu nav {
  display: grid;
}

.mobile-menu nav > a {
  padding: 18px 0;
  border-bottom: 1px solid #343936;
  font-size: 20px;
  font-weight: 600;
}

.mobile-products {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  padding: 16px 0 20px;
  border-bottom: 1px solid #343936;
}

.mobile-products > span {
  grid-column: 1 / -1;
  margin-bottom: 8px;
  color: #737b76;
  font-size: 10px;
  font-weight: 700;
}

.mobile-product-group {
  display: grid;
  min-width: 0;
  align-content: start;
}

.mobile-product-group strong {
  padding: 8px 0 6px;
  color: #737b76;
  font-size: 10px;
}

.mobile-product-group a {
  padding: 11px 0;
  color: #e4e8e5;
  font-size: 13px;
  font-weight: 500;
  overflow-wrap: anywhere;
}

.mobile-product-group a.current-product {
  color: var(--signal);
}

.hero {
  position: relative;
  min-height: min(860px, 88svh);
  overflow: hidden;
  color: var(--white);
  background: var(--ink);
}

.hero > img {
  position: absolute;
  inset: 0;
  height: 100%;
  object-fit: cover;
  object-position: center 45%;
  filter: saturate(0.68) contrast(1.08);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(7, 11, 10, 0.65);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--page-width);
  padding: clamp(145px, 18vh, 200px) clamp(24px, 7vw, 108px) 120px;
  margin: 0 auto;
}

.hero-label,
.contact-label {
  margin: 0 0 24px;
  font-size: 10px;
  font-weight: 700;
}

.hero-label::before,
.contact-label::before {
  display: inline-block;
  width: 28px;
  height: 2px;
  margin-right: 12px;
  vertical-align: middle;
  content: "";
  background: var(--signal);
}

.hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(58px, 7vw, 108px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-statement {
  max-width: 570px;
  margin: 30px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(15px, 1.25vw, 19px);
  font-weight: 400;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-top: 42px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 0 24px;
  border: 0;
  font-size: 13px;
  font-weight: 700;
  transition: transform 180ms ease, background-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button svg {
  width: 17px;
}

.button-primary {
  color: var(--ink);
  background: var(--signal);
}

.button-light {
  color: var(--ink);
  background: var(--white);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 5px;
  border-bottom: 1px solid currentColor;
  font-size: 13px;
  font-weight: 600;
}

.text-link svg {
  width: 16px;
}

.text-link.light {
  color: var(--white);
}

.hero-note {
  position: absolute;
  z-index: 2;
  right: clamp(24px, 5vw, 80px);
  bottom: 34px;
  display: flex;
  gap: 26px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 10px;
}

.hero-note span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-note span::before {
  width: 4px;
  height: 4px;
  content: "";
  background: var(--signal);
}

.intro-strip {
  display: flex;
  min-height: 96px;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  padding: 0 max(24px, calc((100vw - var(--page-width)) / 2 + 64px));
  color: var(--ink);
  background: var(--white);
}

.intro-strip p {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.intro-strip span {
  color: #8c938f;
  font-size: 9px;
}

.section {
  max-width: var(--page-width);
  padding: clamp(90px, 10vw, 150px) clamp(24px, 5vw, 72px);
  margin: 0 auto;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.section-label span {
  color: var(--blue);
  font-size: 10px;
  font-weight: 700;
}

.section-label p {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
}

.about-content {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  align-items: center;
  gap: clamp(55px, 8vw, 120px);
  padding-top: 72px;
}

.about-copy h2,
.capability-heading h2,
.cooperation-heading h2,
.contact-main h2 {
  margin: 0;
  font-size: clamp(38px, 4vw, 64px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0;
}

.about-copy > p {
  max-width: 540px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}

.about-copy .text-link {
  margin-top: 34px;
}

.about-image {
  position: relative;
  margin: 0;
}

.about-image img {
  aspect-ratio: 1.22;
  object-fit: cover;
  filter: saturate(0.74);
}

.about-image figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  display: flex;
  min-height: 58px;
  align-items: center;
  gap: 24px;
  padding: 0 24px;
  color: var(--white);
  background: var(--blue);
  font-size: 10px;
}

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

.section-dark .section-label {
  border-bottom-color: #393e3b;
}

.section-dark .section-label span {
  color: var(--signal);
}

.capability-heading {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: end;
  gap: 70px;
  padding: 68px 0 58px;
}

.capability-heading p {
  max-width: 430px;
  justify-self: end;
  margin: 0 0 8px;
  color: #9da59f;
  font-size: 14px;
  line-height: 1.8;
}

.capability-list {
  border-top: 1px solid #393e3b;
}

.capability-list article {
  display: grid;
  min-height: 152px;
  grid-template-columns: 70px 0.65fr 1.35fr 40px;
  align-items: center;
  gap: 32px;
  border-bottom: 1px solid #393e3b;
}

.capability-number {
  color: var(--signal);
  font-size: 10px;
  font-weight: 700;
}

.capability-list h3 {
  margin: 0;
  font-size: 24px;
}

.capability-list p {
  max-width: 560px;
  margin: 0;
  color: #929a95;
  font-size: 13px;
  line-height: 1.75;
}

.capability-list svg {
  width: 22px;
  color: #777f7a;
}

.cooperation-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(60px, 9vw, 140px);
  padding-top: 72px;
}

.cooperation-heading p {
  max-width: 470px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.process-list {
  padding: 0;
  margin: 0;
  list-style: none;
  border-top: 1px solid #bfc5c0;
}

.process-list li {
  display: grid;
  min-height: 128px;
  grid-template-columns: 52px 1fr;
  align-items: center;
  gap: 22px;
  border-bottom: 1px solid #bfc5c0;
}

.process-list li > span {
  align-self: start;
  padding-top: 34px;
  color: var(--blue);
  font-size: 10px;
  font-weight: 700;
}

.process-list h3 {
  margin: 0 0 8px;
  font-size: 19px;
}

.process-list p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.contact {
  color: var(--white);
  background: var(--blue);
}

.contact-inner {
  display: grid;
  max-width: var(--page-width);
  min-height: 510px;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 90px;
  padding: 80px clamp(24px, 5vw, 72px);
  margin: 0 auto;
}

.contact-label::before {
  background: var(--signal);
}

.contact-main h2 {
  max-width: 550px;
}

.contact-main .button {
  margin-top: 38px;
}

.contact-address {
  padding-left: 60px;
  border-left: 1px solid rgba(255, 255, 255, 0.28);
  font-style: normal;
}

.contact-address > span {
  display: block;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 10px;
  font-weight: 700;
}

.contact-address p {
  max-width: 550px;
  margin: 0 0 15px;
  font-size: 13px;
  line-height: 1.85;
}

.contact-address p[lang="en"] {
  color: rgba(255, 255, 255, 0.62);
  font-size: 11px;
}

.contact-address .contact-phone,
.contact-address .contact-phone a {
  color: rgba(255, 255, 255, 0.18);
  font-size: 11px;
}

footer {
  padding: 55px clamp(24px, 5vw, 72px) 26px;
  color: var(--white);
  background: #090b0a;
}

.footer-main,
.footer-bottom {
  display: flex;
  max-width: var(--page-width);
  align-items: center;
  justify-content: space-between;
  margin: 0 auto;
}

.footer-main {
  padding-bottom: 50px;
}

.footer-company {
  display: grid;
  gap: 7px;
}

.footer-company strong {
  font-size: 17px;
}

.footer-company span {
  color: #777f7a;
  font-size: 10px;
}

.footer-main > a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #a1a8a3;
  font-size: 11px;
}

.footer-main > a svg {
  width: 16px;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid #292d2a;
  color: #626964;
  font-size: 13px;
}

.footer-bottom a {
  color: inherit;
}

.footer-bottom .gongan-beian {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.gongan-beian img {
  width: 18px;
  height: 20px;
  object-fit: contain;
}

.footer-bottom div {
  display: flex;
  gap: 24px;
}

.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 600ms ease, transform 600ms ease;
}

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

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .desktop-nav,
  .header-contact {
    display: none;
  }

  .menu-button {
    display: grid;
  }

  .about-content,
  .cooperation-layout {
    grid-template-columns: 1fr;
  }

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

  .about-image {
    width: 78%;
    justify-self: end;
  }

  .capability-heading {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .capability-heading p {
    justify-self: start;
  }

  .capability-list article {
    grid-template-columns: 50px 0.65fr 1.35fr 30px;
  }

  .contact-inner {
    gap: 50px;
  }

  .contact-address {
    padding-left: 40px;
  }
}

@media (max-width: 620px) {
  :root {
    --header-height: 66px;
  }

  .site-header {
    padding: 0 20px;
  }

  .hero {
    min-height: 770px;
  }

  .hero > img {
    object-position: 58% center;
  }

  .hero-content {
    padding: 130px 20px 80px;
  }

  .hero h1 {
    font-size: 52px;
  }

  .hero-statement {
    max-width: 340px;
    margin-top: 26px;
    font-size: 14px;
    line-height: 1.75;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 22px;
  }

  .hero-note {
    right: 20px;
    bottom: 22px;
    left: 20px;
    justify-content: space-between;
    gap: 8px;
    font-size: 8px;
  }

  .intro-strip {
    min-height: 86px;
    padding: 0 20px;
  }

  .intro-strip p {
    max-width: 270px;
    font-size: 12px;
    line-height: 1.6;
  }

  .intro-strip span {
    display: none;
  }

  .section {
    padding-right: 20px;
    padding-left: 20px;
  }

  .about-content,
  .cooperation-layout {
    gap: 55px;
    padding-top: 50px;
  }

  .about-copy h2,
  .capability-heading h2,
  .cooperation-heading h2,
  .contact-main h2 {
    font-size: 36px;
  }

  .about-image {
    width: 100%;
  }

  .about-image figcaption {
    min-height: 50px;
  }

  .capability-heading {
    padding-top: 50px;
  }

  .capability-list article {
    min-height: 180px;
    grid-template-columns: 36px 1fr 26px;
    gap: 12px;
  }

  .capability-list h3 {
    font-size: 20px;
  }

  .capability-list p {
    grid-column: 2 / 4;
    align-self: start;
    margin-top: -46px;
    padding-top: 60px;
    font-size: 12px;
  }

  .capability-list svg {
    align-self: center;
  }

  .process-list li {
    min-height: 116px;
  }

  .contact-inner {
    min-height: 650px;
    grid-template-columns: 1fr;
    gap: 70px;
    padding: 75px 20px;
  }

  .contact-address {
    padding: 34px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.28);
    border-left: 0;
  }

  footer {
    padding-right: 20px;
    padding-left: 20px;
  }

  .footer-main {
    align-items: flex-start;
    flex-direction: column;
    gap: 28px;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}