:root {
  --ink: #111827;
  --muted: #5d6676;
  --line: #d9e0e8;
  --surface: #f5f7f8;
  --panel: #ffffff;
  --primary: #072c2c;
  --accent: #ff5f03;
  --blue: #2563eb;
  --success: #16a34a;
  --shadow: 0 22px 70px rgba(7, 44, 44, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: Ubuntu, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(245, 247, 248, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 210px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: #fff;
  background: var(--primary);
  border-radius: 8px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 15px;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  min-height: 40px;
  padding: 8px 14px;
  border-radius: 8px;
  color: #263241;
  font-size: 14px;
  font-weight: 700;
}

.site-nav a:hover {
  background: #e9eef2;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 22px;
}

.hero {
  display: flex;
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: clamp(56px, 7vw, 96px) clamp(18px, 5vw, 72px) 38px;
  background:
    linear-gradient(90deg, rgba(5, 24, 42, 0.82), rgba(5, 24, 42, 0.5) 52%, rgba(5, 24, 42, 0.2)),
    url("../images/company/home-hero-ocean.jpg") center / cover;
  color: #fff;
}

.hero-copy {
  max-width: 790px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
.detail-hero h1,
.section-head h2,
.about-copy h2 {
  margin: 0;
  font-family: Oswald, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 860px;
  font-size: clamp(42px, 8vw, 92px);
}

.hero-slogan {
  margin: 18px 0 0;
  color: #9ee5dd;
  font-size: clamp(22px, 3.2vw, 40px);
  font-weight: 800;
}

.hero-subtitle,
.detail-copy p {
  max-width: 700px;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(16px, 1.6vw, 20px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 18px;
  border: 1px solid currentColor;
  border-radius: 8px;
  font-weight: 800;
}

.button.primary {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.button.ghost {
  color: var(--primary);
  background: #fff;
  border-color: #fff;
}

.button.light {
  color: #fff;
  background: transparent;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.metrics div {
  padding: 26px clamp(18px, 4vw, 42px);
  background: #fff;
}

.metrics strong,
.metrics span {
  display: block;
}

.metrics strong {
  color: var(--primary);
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.15;
}

.metrics span {
  color: var(--muted);
  font-weight: 700;
}

.section {
  padding: clamp(56px, 8vw, 112px) clamp(18px, 5vw, 72px);
}

.section-head {
  max-width: 780px;
  margin-bottom: 30px;
}

.section-head h2,
.about-copy h2 {
  color: var(--primary);
  font-size: clamp(32px, 5vw, 58px);
}

.section-head p,
.about-copy p,
.about-panel li {
  color: var(--muted);
  font-size: 16px;
}

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

.business-grid article,
.product-card,
.about-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 40px rgba(17, 24, 39, 0.05);
}

.business-grid article {
  min-height: 250px;
  padding: 24px;
}

.business-grid h3,
.about-panel h3 {
  margin: 18px 0 10px;
  color: var(--primary);
  font-size: 21px;
}

.business-grid p {
  color: var(--muted);
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  color: #fff;
  background: var(--primary);
  border-radius: 8px;
  font-weight: 900;
}

.product-section {
  background: #fff;
}

.product-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.card-image {
  display: block;
  aspect-ratio: 4 / 3;
  background: #edf2f4;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body {
  display: grid;
  gap: 8px;
  padding: 18px;
}

.card-body strong {
  color: var(--primary);
  font-size: 21px;
}

.card-body small,
.card-body span:last-child {
  color: var(--muted);
}

.listing-progress {
  display: grid;
  gap: 8px;
  margin-top: 34px;
  padding: clamp(24px, 4vw, 36px);
  color: #fff;
  background: var(--primary);
  border-radius: 8px;
}

.listing-progress strong,
.listing-progress span,
.listing-progress small {
  display: block;
}

.listing-progress strong {
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1.08;
}

.listing-progress span {
  color: rgba(255, 255, 255, 0.82);
  font-size: 17px;
  font-weight: 800;
}

.listing-progress small {
  color: #9ee5dd;
  font-size: 14px;
  font-weight: 800;
}

.about-section {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 24px;
  align-items: start;
}

.about-copy {
  max-width: 820px;
}

.profile-english {
  margin-top: 26px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.profile-english h3 {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 22px;
}

.profile-english p {
  font-size: 15px;
}

.about-panel {
  padding: 26px;
  border-left: 5px solid var(--accent);
}

.about-panel ul {
  margin: 12px 0 0;
  padding-left: 20px;
}

.business-card-image {
  width: 100%;
  margin: 16px 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.contact-list {
  display: grid;
  gap: 8px;
}

.contact-list span {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.45;
  word-break: break-word;
}

.contact-list a {
  color: var(--primary);
  font-weight: 800;
}

.site-footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(18px, 5vw, 72px);
  color: #fff;
  background: var(--primary);
}

.site-footer p {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.72);
}

.footer-contact {
  display: grid;
  gap: 6px;
  color: rgba(255, 255, 255, 0.82);
}

.detail-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
  padding: clamp(42px, 7vw, 86px) clamp(18px, 5vw, 72px);
  color: #fff;
  background: var(--primary);
}

.detail-hero h1 {
  font-size: clamp(38px, 6vw, 76px);
}

.back-link {
  display: inline-block;
  margin-bottom: 24px;
  color: #9ee5dd;
  font-weight: 800;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.tag-row span {
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  font-size: 13px;
  font-weight: 800;
}

.detail-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  background: #fff;
}

.detail-section {
  background: #fff;
}

.spec-table {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.spec-table div {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 14px;
  padding: 18px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.spec-table strong {
  color: var(--primary);
}

.spec-table span {
  color: var(--muted);
}

.bilingual-table {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.bilingual-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.bilingual-row:last-child {
  border-bottom: 0;
}

.bilingual-row > div {
  padding: 18px;
}

.bilingual-row > div:first-child {
  border-right: 1px solid var(--line);
}

.bilingual-row strong {
  display: block;
  margin-bottom: 8px;
  color: var(--primary);
  font-size: 16px;
}

.bilingual-row p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.thumb-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}

.thumb {
  padding: 0;
  border: 2px solid transparent;
  border-radius: 8px;
  background: #eef2f5;
  cursor: pointer;
  overflow: hidden;
}

.thumb:hover {
  border-color: var(--accent);
}

.thumb img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.detail-long-images {
  display: grid;
  gap: 18px;
  max-width: 980px;
  margin: 0 auto;
}

.detail-long-images img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

@media (max-width: 1080px) {
  .hero,
  .detail-hero,
  .about-section {
    grid-template-columns: 1fr;
  }

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

  .metrics,
  .spec-table {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  .site-header {
    min-height: 68px;
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .site-nav {
    position: absolute;
    top: 68px;
    right: 16px;
    left: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

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

  .site-nav a {
    width: 100%;
  }

  .hero {
    padding-top: 44px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .business-grid,
  .product-grid,
  .metrics,
  .spec-table,
  .thumb-grid,
  .bilingual-row {
    grid-template-columns: 1fr;
  }

  .bilingual-row > div:first-child {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .spec-table div {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }
}