:root {
  --ink: #0b1724;
  --muted: #5b6675;
  --line: #d9e2ea;
  --sea: #007c89;
  --sea-dark: #062d42;
  --aqua: #18c7b4;
  --sun: #ffb32c;
  --mist: #f4f8fb;
  --graphite: #101820;
  --blue: #0d5b88;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(16, 32, 51, 0.12);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(244, 248, 251, 0.74), rgba(255, 255, 255, 0) 420px),
    var(--white);
  line-height: 1.65;
}

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

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

.topbar {
  background: #0b3143;
  color: rgba(255, 255, 255, 0.88);
  font-size: 14px;
}

.topbar .wrap,
.nav .wrap,
.section,
.footer .wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding-left: 22px;
  padding-right: 22px;
}

.topbar .wrap {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding-top: 8px;
  padding-bottom: 8px;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(6, 24, 36, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(16px);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.16);
}

.nav .wrap {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.brand img {
  width: 212px;
  height: auto;
  filter: brightness(0) invert(1) drop-shadow(0 6px 14px rgba(0, 0, 0, 0.2));
}

.brand span {
  position: relative;
  padding-left: 14px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.82);
}

.brand span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 1px;
  height: 22px;
  background: rgba(255, 255, 255, 0.18);
  transform: translateY(-50%);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.78);
  white-space: nowrap;
}

.nav-links a {
  padding: 8px 0;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--aqua);
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 6px;
  background: var(--sea);
  color: var(--white);
  font-weight: 700;
  box-shadow: 0 10px 22px rgba(0, 127, 143, 0.2);
}

.nav-links .cta {
  min-height: 38px;
  padding: 0 22px;
}

.cta.secondary {
  background: var(--white);
  color: var(--sea-dark);
  border: 1px solid rgba(7, 81, 106, 0.25);
  box-shadow: none;
}

.hero {
  min-height: 640px;
  position: relative;
  overflow: hidden;
  display: grid;
  align-items: center;
  color: var(--white);
  background:
    radial-gradient(circle at 78% 24%, rgba(24, 199, 180, 0.25), transparent 28%),
    linear-gradient(90deg, rgba(4, 18, 29, 0.96), rgba(4, 28, 44, 0.78) 46%, rgba(4, 36, 54, 0.2)),
    url("home-hero-helm-display.jpg") 62% center / cover no-repeat;
}

.hero::after,
.page-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 120px;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.08));
}

.hero .section {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-top: 48px;
  padding-bottom: 86px;
}

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

h1,
h2,
h3 {
  line-height: 1.22;
  margin: 0;
}

h1 {
  max-width: 780px;
  font-size: clamp(38px, 6vw, 64px);
}

.hero h1 {
  max-width: 1180px;
  white-space: nowrap;
  font-size: clamp(44px, 5vw, 72px);
}

h2 {
  font-size: clamp(28px, 4vw, 42px);
}

.nowrap-title {
  max-width: none;
  white-space: nowrap;
}

h3 {
  font-size: 22px;
}

.lead {
  max-width: 720px;
  margin: 22px 0 0;
  font-size: 20px;
  color: rgba(255, 255, 255, 0.9);
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  max-width: 760px;
  margin-top: 48px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.metric {
  padding: 22px;
  background: rgba(8, 50, 68, 0.62);
}

.metric strong {
  display: block;
  font-size: 26px;
}

.metric span {
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.section {
  padding-top: 86px;
  padding-bottom: 86px;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 34px;
}

.section-head p {
  max-width: 560px;
  margin: 0;
  color: var(--muted);
}

.band {
  background: var(--mist);
}

.grid {
  display: grid;
  gap: 22px;
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.case-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(300px, 0.82fr);
  gap: 24px;
  align-items: stretch;
}

.case-hero-card {
  min-height: 420px;
  border-radius: 8px;
  padding: 34px;
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(5, 23, 36, 0.9), rgba(5, 50, 72, 0.66)),
    url("remote-images/5eaae536432e04b7.png") center / cover no-repeat;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  box-shadow: var(--shadow);
}

.case-hero-card p {
  max-width: 620px;
  color: rgba(255, 255, 255, 0.78);
}

.case-stat-stack {
  display: grid;
  gap: 14px;
}

.case-stat {
  padding: 24px;
  border-radius: 8px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 12px 28px rgba(11, 23, 36, 0.05);
}

.case-stat strong {
  display: block;
  font-size: 30px;
  color: var(--sea-dark);
}

.case-stat span {
  color: var(--muted);
}

.card {
  position: relative;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 26px;
  box-shadow: 0 12px 28px rgba(11, 23, 36, 0.05);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--aqua), var(--blue), transparent);
  opacity: 0.8;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  transition: 0.2s ease;
}

.product-rail {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
}

.rail-item {
  position: relative;
  overflow: hidden;
  min-height: 118px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(6, 45, 66, 0.74);
  color: var(--white);
}

.rail-item::after {
  content: "";
  position: absolute;
  right: -24px;
  bottom: -24px;
  width: 72px;
  height: 72px;
  border: 1px solid rgba(24, 199, 180, 0.3);
  border-radius: 50%;
}

.rail-item strong {
  display: block;
  font-size: 18px;
}

.rail-item span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.dark-slab {
  background: var(--graphite);
  color: var(--white);
}

.dark-slab .section-head p,
.dark-slab .card p {
  color: rgba(255, 255, 255, 0.72);
}

.dark-slab .card {
  background: #16232d;
  border-color: rgba(255, 255, 255, 0.12);
}

.system-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
}

.system-block {
  position: relative;
  overflow: hidden;
  min-height: 280px;
  padding: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, #0b3143, #0d5b88);
  color: var(--white);
}

.system-block::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 210px;
  height: 210px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
}

.system-block p {
  color: rgba(255, 255, 255, 0.76);
}

.spec-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 28px;
  background: var(--line);
  border: 1px solid var(--line);
}

.hardware-strip {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 28px;
  align-items: stretch;
}

.hardware-panel {
  position: relative;
  overflow: hidden;
  min-height: 390px;
  padding: 34px;
  border-radius: 8px;
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(4, 20, 32, 0.92), rgba(7, 81, 106, 0.7)),
    url("remote-images/d2a138a37d564a8e.png") center / cover no-repeat;
  box-shadow: var(--shadow);
}

.hardware-panel p {
  color: rgba(255, 255, 255, 0.78);
}

.hardware-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.hardware-tile {
  position: relative;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 28px rgba(11, 23, 36, 0.05);
}

.hardware-tile strong {
  display: block;
  color: var(--sea-dark);
  font-size: 18px;
}

.hardware-tile span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.product-card {
  padding: 0;
}

.product-card::before {
  display: none;
}

.product-thumb {
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 0.72;
  padding: 22px;
  background: linear-gradient(135deg, #f7fafc, #edf4f7);
  border-bottom: 1px solid var(--line);
}

.product-thumb img {
  width: 100%;
  height: 190px;
  object-fit: contain;
}

.product-info {
  padding: 22px;
}

.product-detail {
  align-items: start;
}

.product-detail-summary {
  position: sticky;
  top: 112px;
}

.product-detail-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.product-detail-card .product-thumb {
  border-bottom: 0;
}

.legacy-detail {
  padding-top: 0;
}

.legacy-detail-panel {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 28px rgba(11, 23, 36, 0.05);
}

.legacy-detail-panel h2 {
  margin-bottom: 12px;
}

.legacy-detail-panel > p {
  margin: 0 0 24px;
  color: var(--muted);
}

.legacy-gallery {
  display: grid;
  gap: 18px;
}

.legacy-gallery img {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f7fafc;
}

.product-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.category-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 34px;
}

.category-nav a {
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  color: var(--sea-dark);
  font-weight: 800;
  font-size: 14px;
}

.category-section {
  scroll-margin-top: 130px;
  margin-top: 54px;
}

.category-title {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.category-title p {
  margin: 0;
  color: var(--muted);
}

.news-list {
  display: grid;
  gap: 18px;
}

.news-item {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 24px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 28px rgba(11, 23, 36, 0.05);
}

.news-date {
  color: var(--sea);
  font-weight: 800;
}

.news-item p,
.article-body p {
  color: var(--muted);
}

.article-body {
  max-width: 860px;
}

.solution-detail {
  max-width: 980px;
}

.solution-detail h2 {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.solution-detail h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.solution-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.solution-gallery img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f7fafc;
  box-shadow: 0 12px 28px rgba(11, 23, 36, 0.05);
}

.article-meta {
  margin: 0 0 24px;
  color: var(--aqua);
  font-weight: 800;
}

.spec-row div {
  padding: 20px;
  background: var(--white);
}

.spec-row strong {
  display: block;
  color: var(--sea-dark);
}

.spec-row span {
  color: var(--muted);
  font-size: 14px;
}

.mini-link {
  display: inline-block;
  margin-top: 18px;
  color: var(--sea);
  font-weight: 800;
}

.card p,
.plain-list p {
  margin: 12px 0 0;
  color: var(--muted);
}

.tag {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--sea);
  font-weight: 800;
  font-size: 14px;
}

.feature {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 48px;
  align-items: center;
}

.feature img {
  border-radius: 8px;
  min-height: 320px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.check-list {
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  margin: 12px 0;
  color: #31485c;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--sun);
}

.page-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 16%, rgba(24, 199, 180, 0.24), transparent 28%),
    linear-gradient(135deg, #081824, #0b3143 58%, #0d5b88);
  color: var(--white);
}

.solutions-hero {
  background:
    radial-gradient(circle at 82% 16%, rgba(24, 199, 180, 0.2), transparent 28%),
    linear-gradient(90deg, rgba(4, 18, 29, 0.96), rgba(4, 28, 44, 0.78) 46%, rgba(4, 36, 54, 0.22)),
    url("solutions-hero-platform.png") 64% center / cover no-repeat;
}

.products-hero {
  background:
    radial-gradient(circle at 76% 20%, rgba(24, 199, 180, 0.18), transparent 30%),
    linear-gradient(90deg, rgba(4, 18, 29, 0.96), rgba(4, 28, 44, 0.74) 46%, rgba(4, 36, 54, 0.18)),
    url("products-hero-bg.png") 60% 70% / 100% auto no-repeat;
}

.cases-hero {
  background:
    radial-gradient(circle at 76% 18%, rgba(24, 199, 180, 0.2), transparent 30%),
    linear-gradient(90deg, rgba(4, 18, 29, 0.96), rgba(4, 28, 44, 0.76) 48%, rgba(4, 36, 54, 0.2)),
    url("cases-hero-bg.jpg") 64% center / cover no-repeat;
}

.news-hero {
  background:
    radial-gradient(circle at 72% 22%, rgba(24, 199, 180, 0.18), transparent 28%),
    linear-gradient(90deg, rgba(4, 18, 29, 0.94), rgba(4, 28, 44, 0.72) 48%, rgba(4, 36, 54, 0.24)),
    url("news-hero-bg.jpg") 58% 68% / cover no-repeat;
}

.page-hero .section {
  padding-top: 72px;
  padding-bottom: 72px;
}


.page-hero h1 {
  max-width: 1120px;
  white-space: nowrap;
  font-size: clamp(38px, 4.8vw, 60px);
}

.page-hero p {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 19px;
}

.breadcrumb {
  margin-bottom: 14px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
}

.timeline {
  display: grid;
  gap: 18px;
}

.step {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 18px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 28px rgba(11, 23, 36, 0.05);
}

.step strong {
  color: var(--sea);
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: stretch;
}

.contact-box {
  padding: 30px;
  border-radius: 8px;
  background: #0b3143;
  color: var(--white);
}

.contact-box p {
  color: rgba(255, 255, 255, 0.78);
}

.map-box {
  min-height: 360px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(232, 244, 246, 0.92), rgba(248, 250, 251, 0.92)),
    repeating-linear-gradient(135deg, transparent 0 18px, rgba(13, 91, 136, 0.06) 18px 19px);
  padding: 30px;
}

.footer {
  background: #091d2a;
  color: rgba(255, 255, 255, 0.78);
}

.footer .wrap {
  padding-top: 48px;
  padding-bottom: 34px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr 1fr;
  gap: 28px;
}

.footer h2,
.footer h3 {
  color: var(--white);
  font-size: 18px;
}

.footer a {
  display: block;
  margin: 8px 0;
  color: rgba(255, 255, 255, 0.72);
}

.copyright {
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 14px;
}

@media (max-width: 920px) {
  .topbar .wrap,
  .section-head,
  .feature,
  .contact-panel {
    display: block;
  }

  .nav .wrap {
    min-height: auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .brand {
    justify-content: space-between;
    margin-bottom: 0;
  }

  .nav-links {
    gap: 8px;
    overflow-x: auto;
    padding: 2px 0 8px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-links a {
    flex: 0 0 auto;
    padding: 8px 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.2;
  }

  .nav-links a[aria-current="page"] {
    border-color: rgba(24, 199, 180, 0.48);
    background: rgba(24, 199, 180, 0.12);
    color: var(--white);
  }

  .nav-links .cta {
    min-height: auto;
    box-shadow: none;
    background: var(--sea);
    border-color: rgba(24, 199, 180, 0.56);
  }

  .grid.three,
  .grid.two,
  .case-showcase,
  .hardware-strip,
  .news-item,
  .hero-metrics,
  .footer-grid,
  .product-rail,
  .system-grid,
  .solution-gallery,
  .spec-row {
    grid-template-columns: 1fr;
  }

  .feature img,
  .contact-box,
  .case-stat-stack,
  .hardware-grid {
    margin-top: 28px;
  }

  .product-detail-summary {
    position: static;
  }

  .hero {
    min-height: auto;
    background-position: 58% center;
  }
}

@media (max-width: 560px) {
  .topbar {
    display: none;
  }

  .brand img {
    width: 156px;
  }

  .brand span {
    display: none;
  }

  .section,
  .hero .section,
  .page-hero .section {
    padding-top: 56px;
    padding-bottom: 56px;
  }

  h1 {
    font-size: 34px;
  }

  .hero h1 {
    white-space: normal;
    font-size: 34px;
  }

  .page-hero h1 {
    white-space: normal;
    font-size: 34px;
  }

  .lead,
  .page-hero p {
    font-size: 17px;
  }

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

  .hero-actions .cta {
    width: 100%;
  }

  .card,
  .system-block,
  .contact-box,
  .map-box,
  .hardware-panel,
  .hardware-tile {
    padding: 22px;
  }

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