:root {
  --teal: #0ea5a1;
  --teal-deep: #067a78;
  --cyan: #75d6e3;
  --amber: #f3ad22;
  --ink: #102326;
  --muted: #5a6b70;
  --line: #d9e8e9;
  --surface: #ffffff;
  --soft: #f5fbfb;
  --warm: #fbf7ee;
  --graphite: #253238;
  --shadow: 0 18px 55px rgba(16, 35, 38, 0.12);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--surface);
  letter-spacing: 0;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: min(calc(100% - 32px), 1220px);
  height: 72px;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 10px 12px 10px 18px;
  border: 1px solid rgba(255, 255, 255, 0.68);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 18px 45px rgba(16, 35, 38, 0.12);
  backdrop-filter: blur(18px);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
}

.brand {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
}

.brand img {
  width: 136px;
  height: 52px;
  object-fit: contain;
}

.desktop-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  gap: clamp(14px, 2vw, 28px);
  font-size: 14px;
  color: #33494f;
  white-space: nowrap;
}

.desktop-nav a {
  position: relative;
  padding: 8px 0;
}

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

.desktop-nav a:hover::after,
.desktop-nav a:focus-visible::after {
  transform: scaleX(1);
}

.header-action,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 6px;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.header-action {
  flex: 0 0 auto;
  padding: 0 18px;
  color: #fff;
  background: var(--teal);
  box-shadow: 0 14px 28px rgba(14, 165, 161, 0.28);
}

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

.menu-button {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 7px;
}

.menu-button span {
  width: 20px;
  height: 2px;
  background: var(--ink);
  transition: transform 180ms ease;
}

.menu-button[aria-expanded="true"] span:first-child {
  transform: translateY(4.5px) rotate(45deg);
}

.menu-button[aria-expanded="true"] span:last-child {
  transform: translateY(-4.5px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  z-index: 19;
  inset: 0;
  display: none;
  padding: 110px 28px 30px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(18px);
}

.mobile-nav.is-open {
  display: grid;
  align-content: start;
  gap: 10px;
}

.mobile-nav a {
  padding: 16px;
  border-bottom: 1px solid var(--line);
  font-size: 18px;
  font-weight: 700;
}

.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  padding: 128px 0 56px;
  background: #edf9fa;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.82) 34%, rgba(255, 255, 255, 0.28) 64%, rgba(255, 255, 255, 0.1) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.88) 0%, rgba(255, 255, 255, 0.05) 24%, rgba(255, 255, 255, 0.88) 100%);
}

.hero-content {
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
  padding-top: 34px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal-deep);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

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

h1 {
  max-width: 650px;
  margin-bottom: 16px;
  font-size: clamp(42px, 7vw, 88px);
  line-height: 0.98;
  letter-spacing: 0;
}

h1 span {
  display: block;
}

.hero-slogan {
  margin-bottom: 18px;
  font-size: clamp(22px, 3vw, 36px);
  line-height: 1.22;
  color: var(--teal-deep);
  font-weight: 800;
}

.hero-copy {
  max-width: 610px;
  margin-bottom: 32px;
  color: #40565c;
  font-size: 18px;
  line-height: 1.86;
  overflow-wrap: anywhere;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-width: 150px;
  padding: 0 22px;
}

.button.primary {
  color: #fff;
  background: var(--teal);
  box-shadow: 0 18px 35px rgba(14, 165, 161, 0.28);
}

.button.secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(14, 165, 161, 0.24);
}

.intro-band {
  background: var(--surface);
  padding: 26px 0 28px;
  border-bottom: 1px solid var(--line);
}

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

.metrics-grid article {
  min-height: 108px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(135deg, #fff 0%, #f7fcfc 100%);
}

.metrics-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--teal-deep);
  font-size: 34px;
  line-height: 1;
}

.metrics-grid span {
  color: var(--muted);
  line-height: 1.55;
}

.section {
  padding: 96px 0;
}

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

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.82fr);
  gap: clamp(36px, 6vw, 84px);
  align-items: center;
}

.section-copy h2,
.section-heading h2,
.contact-layout h2 {
  margin-bottom: 20px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.12;
  letter-spacing: 0;
}

.section-copy p,
.section-heading p,
.contact-layout p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 42px;
}

.section-heading.compact {
  margin-bottom: 52px;
}

.belief-panel {
  display: grid;
  gap: 14px;
}

.belief-panel div {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 18px;
  align-items: center;
  min-height: 96px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 15px 40px rgba(16, 35, 38, 0.07);
}

.belief-panel span {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--teal);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 800;
}

.belief-panel p {
  margin: 0;
  color: var(--graphite);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.55;
}

.solution-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  gap: 30px;
  align-items: stretch;
}

.solution-layout > img {
  width: 100%;
  height: 100%;
  min-height: 480px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.solution-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.solution-cards article,
.tech-grid article,
.credentials-grid article {
  position: relative;
  min-height: 210px;
  padding: 24px;
  border: 1px solid rgba(14, 165, 161, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.86);
}

.solution-cards article span {
  display: block;
  width: 34px;
  height: 4px;
  margin-bottom: 28px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--teal), var(--amber));
}

.solution-cards h3,
.tech-grid h3 {
  margin-bottom: 12px;
  font-size: 22px;
}

.solution-cards p,
.tech-grid p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.78;
}

.timeline-section {
  background:
    linear-gradient(180deg, rgba(251, 247, 238, 0.64), rgba(255, 255, 255, 0.95)),
    #fff;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.timeline article {
  position: relative;
  min-height: 210px;
  padding: 28px 22px 0 0;
}

.timeline article::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 6px rgba(14, 165, 161, 0.12);
}

.timeline time {
  display: block;
  margin-bottom: 16px;
  color: var(--teal-deep);
  font-size: 26px;
  font-weight: 800;
}

.timeline p {
  color: var(--muted);
  line-height: 1.78;
}

.manufacturing-section {
  padding-top: 0;
  background: var(--surface);
}

.manufacturing-image {
  width: 100%;
  max-height: 560px;
  overflow: hidden;
}

.manufacturing-image img {
  width: 100%;
  height: min(52vw, 560px);
  min-height: 320px;
  object-fit: cover;
}

.manufacturing-copy {
  padding-top: 70px;
}

.capability-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.capability-list li {
  min-height: 72px;
  display: flex;
  align-items: center;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  color: var(--graphite);
  font-weight: 700;
}

.capability-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  margin-right: 12px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 6px rgba(243, 173, 34, 0.15);
}

.technology-section {
  background: var(--graphite);
  color: #fff;
}

.technology-section .eyebrow {
  color: var(--cyan);
}

.technology-section .section-heading p {
  color: rgba(255, 255, 255, 0.72);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.tech-grid article {
  min-height: 230px;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
}

.tech-grid article::before {
  content: "";
  display: block;
  width: 42px;
  height: 42px;
  margin-bottom: 28px;
  border: 1px solid rgba(117, 214, 227, 0.7);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(117, 214, 227, 0.45), rgba(243, 173, 34, 0.18));
}

.tech-grid h3 {
  color: #fff;
}

.tech-grid p {
  color: rgba(255, 255, 255, 0.72);
}

.partners-section {
  background: var(--soft);
}

.partner-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(360px, 1.14fr);
  gap: clamp(32px, 5vw, 70px);
  align-items: center;
}

.partner-layout img {
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.partner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.partner-tags span {
  padding: 12px 14px;
  border: 1px solid rgba(14, 165, 161, 0.22);
  border-radius: 6px;
  background: #fff;
  color: var(--graphite);
  font-weight: 700;
}

.credentials-section {
  background: #fff;
}

.credentials-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.credentials-grid article {
  min-height: 116px;
  display: flex;
  align-items: center;
  color: var(--graphite);
  font-weight: 800;
  line-height: 1.55;
}

.contact-section {
  padding: 92px 0;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(6, 122, 120, 0.96), rgba(37, 50, 56, 0.98)),
    var(--graphite);
}

.contact-section .eyebrow {
  color: #aef1f1;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.48fr);
  gap: 44px;
  align-items: center;
}

.contact-layout p {
  max-width: 680px;
  color: rgba(255, 255, 255, 0.75);
}

address {
  display: grid;
  gap: 12px;
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  font-style: normal;
}

address span {
  color: #fff;
  font-size: 20px;
  font-weight: 800;
}

address a {
  color: #dffafa;
  overflow-wrap: anywhere;
}

.site-footer {
  padding: 28px 0;
  background: #0f1f23;
  color: rgba(255, 255, 255, 0.72);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-inner img {
  width: 120px;
  height: 48px;
  object-fit: contain;
  background: #fff;
  border-radius: 6px;
}

.footer-meta {
  display: grid;
  gap: 8px;
  justify-items: end;
  text-align: right;
}

.footer-meta p {
  margin: 0;
}

.footer-meta a {
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
}

.footer-meta a:hover,
.footer-meta a:focus-visible {
  color: #fff;
}

@media (max-width: 1040px) {
  .desktop-nav,
  .header-action {
    display: none;
  }

  .site-header {
    justify-content: space-between;
  }

  .menu-button {
    display: flex;
  }

  .solution-layout,
  .partner-layout,
  .split,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .solution-layout > img {
    min-height: 360px;
  }

  .tech-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .timeline {
    grid-template-columns: 1fr;
    border-top: 0;
    border-left: 1px solid var(--line);
  }

  .timeline article {
    min-height: auto;
    padding: 0 0 34px 28px;
  }

  .timeline article::before {
    top: 8px;
    left: -6px;
  }
}

@media (max-width: 720px) {
  .container,
  .hero-content {
    width: min(100% - 28px, var(--max));
  }

  .site-header {
    top: 10px;
    width: calc(100% - 20px);
    height: 64px;
    padding-left: 12px;
  }

  .brand img {
    width: 116px;
    height: 44px;
  }

  .hero {
    min-height: 86vh;
    padding-top: 112px;
    align-items: flex-end;
  }

  .hero-bg {
    object-position: 61% center;
  }

  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.52) 0%, rgba(255, 255, 255, 0.95) 51%, rgba(255, 255, 255, 0.98) 100%),
      linear-gradient(90deg, rgba(255, 255, 255, 0.64), rgba(255, 255, 255, 0.14));
  }

  h1 {
    font-size: clamp(40px, 12.5vw, 52px);
  }

  .hero-copy {
    font-size: 16px;
    line-height: 1.78;
  }

  .button {
    width: 100%;
  }

  .metrics-grid,
  .solution-cards,
  .capability-list,
  .tech-grid,
  .credentials-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 72px 0;
  }

  .solution-layout > img {
    min-height: 280px;
  }

  .manufacturing-copy {
    padding-top: 52px;
  }

  .contact-section {
    padding: 74px 0;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-meta {
    justify-items: start;
    text-align: left;
  }
}