:root {
  --blue: #1f4d9f;
  --blue-deep: #173774;
  --teal: #009f86;
  --ink: #162033;
  --muted: #5f6b7a;
  --line: #dde5ef;
  --soft: #f4f7fb;
  --paper: #ffffff;
  --warm: #f3efe8;
  --radius: 8px;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background: #fff;
}

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

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

section[id],
main[id] {
  scroll-margin-top: 82px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 16px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(221, 229, 239, 0.88);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: 132px;
  flex: 0 0 auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #2f3b4e;
  font-size: 14px;
}

.site-nav > a,
.nav-link {
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

.site-nav > a:hover,
.nav-link:hover,
.has-menu:focus-within .nav-link,
.has-menu:hover .nav-link {
  color: var(--blue);
  border-bottom-color: var(--teal);
}

.nav-item {
  position: relative;
}

.mega-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  width: min(720px, calc(100vw - 48px));
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  padding: 1px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  box-shadow: 0 24px 64px rgba(22, 32, 51, 0.16);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 8px);
  transition: opacity 0.16s ease, transform 0.16s ease;
}

.mega-menu::before {
  content: "";
  position: absolute;
  right: 0;
  bottom: 100%;
  left: 0;
  height: 16px;
}

.has-menu:hover .mega-menu,
.has-menu:focus-within .mega-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.mega-menu a {
  min-height: 112px;
  padding: 18px;
  background: #fff;
}

.mega-menu a:hover {
  background: #f6f9fc;
}

.mega-menu span {
  display: block;
  color: var(--teal);
  font-weight: 800;
}

.mega-menu strong {
  display: block;
  margin-top: 10px;
  color: #314056;
  font-size: 14px;
  line-height: 1.65;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.92fr);
  align-items: center;
  gap: clamp(28px, 6vw, 76px);
  min-height: calc(100vh - 76px);
  padding: clamp(48px, 8vw, 96px) clamp(20px, 5vw, 72px);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.96), rgba(244, 247, 251, 0.88)),
    radial-gradient(circle at 80% 10%, rgba(0, 159, 134, 0.12), transparent 34%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.about-copy h2 {
  margin: 0;
  font-weight: 800;
  letter-spacing: 0;
  color: var(--ink);
}

.hero h1 {
  max-width: 760px;
  font-size: clamp(40px, 6.2vw, 72px);
  line-height: 1.05;
}

.hero-lede {
  max-width: 720px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.85;
}

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

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 14px;
}

.primary-link {
  color: #fff;
  background: var(--blue);
}

.secondary-link {
  color: var(--blue-deep);
  border: 1px solid #c7d4e8;
  background: #fff;
}

.hero-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-items: stretch;
}

.hero-showcase img {
  width: 100%;
  min-height: 160px;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 18px 42px rgba(31, 77, 159, 0.08);
}

.hero-showcase .hero-product-main {
  grid-row: auto;
}

.stats-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  padding: 1px clamp(20px, 5vw, 72px);
  background: var(--line);
}

.stats-band div {
  min-height: 116px;
  padding: 24px;
  background: #fff;
}

.stats-band strong {
  display: block;
  color: var(--blue);
  font-size: 28px;
  line-height: 1;
}

.stats-band span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.55;
}

.section {
  padding: clamp(58px, 8vw, 96px) clamp(20px, 5vw, 72px);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: end;
}

.section-heading h2,
.about-copy h2 {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.18;
}

.section-heading p:not(.eyebrow),
.about-copy p {
  max-width: 780px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
}

.feature-list {
  display: grid;
  gap: 12px;
}

.feature-list article {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 18px;
  align-items: center;
  padding: 18px;
  border-left: 4px solid var(--teal);
  background: var(--soft);
}

.feature-list span {
  color: var(--teal);
  font-weight: 800;
}

.feature-list strong {
  font-size: 18px;
  line-height: 1.45;
}

.products-panel {
  padding: 0 clamp(20px, 5vw, 72px) clamp(68px, 8vw, 100px);
}

.series-strip {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 1px;
  padding: 1px clamp(20px, 5vw, 72px);
  background: var(--line);
}

.series-strip a {
  min-height: 150px;
  padding: 22px;
  background: #fff;
  transition: background 0.16s ease, transform 0.16s ease;
}

.series-strip a:hover {
  background: #f6f9fc;
  transform: translateY(-2px);
}

.series-strip span {
  display: block;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
}

.series-strip strong {
  display: block;
  margin-top: 18px;
  color: var(--ink);
  font-size: 18px;
  line-height: 1.35;
}

.series-strip em {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  font-style: normal;
  line-height: 1.45;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.filter {
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #344256;
  background: #fff;
  cursor: pointer;
}

.filter.is-active {
  color: #fff;
  border-color: var(--blue);
  background: var(--blue);
}

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

.product-card {
  display: grid;
  grid-template-rows: 220px 1fr;
  min-height: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(22, 32, 51, 0.1);
}

.product-media {
  display: grid;
  place-items: center;
  min-height: 0;
  padding: 20px;
  border-bottom: 1px solid var(--line);
  background: #f7fafc;
}

.product-media img {
  width: auto;
  height: auto;
  max-width: 88%;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
}

.product-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-width: 0;
  padding: 18px;
  background: #fff;
}

.product-category {
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
}

.product-card h3 {
  margin: 10px 0 8px;
  font-size: 19px;
  line-height: 1.35;
  overflow-wrap: break-word;
}

.product-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  overflow-wrap: break-word;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: auto;
  padding-top: 16px;
}

.product-tags span {
  padding: 5px 8px;
  border-radius: 6px;
  color: #324052;
  font-size: 12px;
  background: var(--soft);
}

.solutions {
  background: #f8fafc;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.solution-grid article {
  min-height: 208px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.solution-grid h3 {
  margin: 0;
  color: var(--blue-deep);
  font-size: 21px;
}

.solution-grid p {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.capabilities {
  background:
    linear-gradient(90deg, rgba(16, 33, 63, 0.94), rgba(23, 55, 116, 0.9)),
    linear-gradient(135deg, #10213f, #173774);
  color: #fff;
}

.capabilities .section-heading h2,
.capabilities .section-heading p:not(.eyebrow) {
  color: #fff;
}

.capabilities .section-heading p:not(.eyebrow) {
  color: #d7e2f1;
}

.capability-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(420px, 1fr);
  gap: clamp(22px, 5vw, 62px);
  margin-top: 34px;
  align-items: stretch;
}

.capability-lead {
  min-height: 360px;
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
}

.capability-lead h3 {
  margin: 0;
  max-width: 420px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.18;
}

.capability-lead p {
  margin: 24px 0 0;
  color: #d7e2f1;
  font-size: 16px;
  line-height: 1.9;
}

.capability-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  overflow: hidden;
}

.capability-list article {
  min-height: 178px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.1);
}

.capability-list span {
  color: #7ad9ca;
  font-weight: 800;
}

.capability-list h3 {
  margin: 18px 0 10px;
  font-size: 22px;
}

.capability-list p {
  margin: 0;
  color: #d7e2f1;
  line-height: 1.75;
}

.about-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
  gap: clamp(28px, 6vw, 74px);
  align-items: center;
  padding: clamp(58px, 8vw, 98px) clamp(20px, 5vw, 72px);
  background: var(--warm);
}

.about-points {
  display: grid;
  gap: 12px;
}

.about-points div {
  padding: 22px;
  border-radius: var(--radius);
  background: #fff;
}

.about-points span {
  display: block;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
}

.about-points strong {
  display: block;
  margin-top: 10px;
  font-size: 18px;
  line-height: 1.55;
}

.proof-section {
  background: #fff;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.proof-grid article {
  min-height: 250px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.proof-grid span {
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
}

.proof-grid h3 {
  margin: 18px 0 0;
  color: var(--ink);
  font-size: 22px;
  line-height: 1.45;
}

.proof-grid p {
  margin: 18px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(240px, 0.9fr) minmax(180px, 0.44fr) minmax(260px, 0.8fr);
  align-items: start;
  justify-content: space-between;
  gap: 32px;
  padding: 36px clamp(20px, 5vw, 72px);
  color: #d9e3f3;
  background: #10213f;
}

.site-footer img {
  width: 118px;
  background: #fff;
}

.site-footer p,
.site-footer address {
  margin: 16px 0 0;
  font-style: normal;
  line-height: 1.75;
}

.footer-links {
  display: grid;
  gap: 10px;
}

.footer-links a {
  color: #d9e3f3;
}

.footer-links a:hover {
  color: #fff;
}

.site-footer address {
  display: grid;
  gap: 6px;
  text-align: right;
}

@media (max-width: 1120px) {
  .product-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .hero,
  .intro-grid,
  .about-band {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .stats-band,
  .series-strip,
  .solution-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .capability-layout {
    grid-template-columns: 1fr;
  }

  .proof-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-header {
    padding: 10px 18px;
  }

  .brand {
    width: 96px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 64px;
    right: 18px;
    left: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: 0 20px 50px rgba(22, 32, 51, 0.14);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 13px 12px;
  }

  .nav-item {
    position: static;
  }

  .nav-link {
    display: block;
    padding: 13px 12px;
  }

  .mega-menu {
    position: static;
    width: 100%;
    grid-template-columns: 1fr;
    gap: 0;
    padding: 0 0 8px;
    border: 0;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    background: #fff;
  }

  .mega-menu a {
    min-height: 0;
    padding: 12px;
    border-top: 1px solid var(--line);
    background: var(--soft);
  }

  .hero {
    padding-top: 42px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-lede {
    font-size: 16px;
  }

  .hero-showcase {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .hero-showcase img {
    min-height: 126px;
    padding: 12px;
  }

  .stats-band,
  .series-strip,
  .solution-grid,
  .product-grid {
    grid-template-columns: 1fr;
  }

  .products-panel {
    padding-bottom: 58px;
  }

  .filters {
    flex-wrap: nowrap;
    gap: 8px;
    margin: 0 -18px 20px;
    padding: 0 18px 8px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .filters::-webkit-scrollbar {
    display: none;
  }

  .filter {
    flex: 0 0 auto;
  }

  .feature-list article {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .product-card {
    grid-template-rows: 232px auto;
  }

  .product-media {
    padding: 18px;
  }

  .product-media img {
    max-width: 82%;
    max-height: 198px;
  }

  .product-body {
    padding: 20px;
  }

  .product-card h3 {
    font-size: 22px;
  }

  .product-card p {
    font-size: 16px;
    line-height: 1.75;
  }

  .site-footer {
    display: grid;
    grid-template-columns: 1fr;
  }

  .site-footer address {
    text-align: left;
  }
}