:root {
  --navy: #082a42;
  --navy-2: #0d3550;
  --ink: #09263a;
  --muted: #647482;
  --line: #dfe7ed;
  --paper: #f5f7f8;
  --white: #ffffff;
  --orange: #ff6b14;
  --orange-dark: #e4560a;
  --shadow: 0 24px 60px rgba(5, 27, 43, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  font-weight: 400;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

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

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  width: 100%;
  color: var(--white);
}

.top-strip {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  max-width: 1160px;
  margin: 0 auto;
  padding: 10px 24px 0;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.78);
}

.navbar {
  display: flex;
  align-items: center;
  gap: 22px;
  max-width: 1160px;
  min-height: 76px;
  margin: 10px auto 0;
  padding: 0 24px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(7, 34, 54, 0.78);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid rgba(255, 107, 20, 0.5);
  background: var(--navy);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.08);
}

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

.brand strong {
  font-size: 19px;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand small {
  margin-top: -3px;
  font-size: 11px;
  color: var(--orange);
}

.nav-links {
  display: flex;
  justify-content: center;
  gap: 26px;
  flex: 1;
  font-size: 14px;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.84);
}

.nav-links a:hover {
  color: var(--white);
}

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

.nav-cta,
.btn {
  border: 0;
  background: var(--orange);
  color: var(--white);
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 14px 30px rgba(255, 107, 20, 0.28);
}

.nav-cta {
  padding: 13px 20px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  border: 0;
  margin-left: auto;
  background: transparent;
  color: var(--white);
  font-size: 26px;
}

.hero {
  position: relative;
  min-height: 720px;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--navy);
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5, 31, 51, 0.96) 0%, rgba(5, 31, 51, 0.82) 39%, rgba(5, 31, 51, 0.2) 78%),
    linear-gradient(180deg, rgba(5, 31, 51, 0.15), rgba(5, 31, 51, 0.55)),
    url("assets/hero-rails.jpg") center / cover;
  filter: saturate(0.88) contrast(1.08);
  transform: scale(1.02);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(1160px, calc(100% - 48px));
  margin: 118px auto 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

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

h1 {
  max-width: 660px;
  margin-bottom: 22px;
  font-size: clamp(34px, 4.8vw, 52px);
  font-weight: 700;
  line-height: 1.15;
}

.hero-copy {
  max-width: 680px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 16px;
  font-weight: 400;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 132px;
  min-height: 48px;
  padding: 13px 24px;
  font-size: 14px;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  box-shadow: none;
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.hero-card {
  position: absolute;
  right: max(24px, calc((100vw - 1160px) / 2));
  bottom: 44px;
  z-index: 2;
  width: min(390px, calc(100% - 48px));
  padding: 28px 30px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background:
    radial-gradient(circle at 12% 8%, rgba(255, 255, 255, 0.16), transparent 32%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(8, 42, 66, 0.52) 42%, rgba(6, 28, 45, 0.72)),
    rgba(8, 42, 66, 0.46);
  color: var(--white);
  box-shadow:
    0 28px 70px rgba(1, 18, 31, 0.34),
    inset 0 1px 0 rgba(255, 255, 255, 0.13);
  backdrop-filter: blur(18px) saturate(1.08);
  overflow: hidden;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.12), transparent);
  opacity: 0.5;
  mask-image: linear-gradient(180deg, #000, transparent 86%);
}

.hero-card span {
  position: relative;
  color: var(--orange);
  font-size: 13px;
  font-weight: 800;
}

.hero-card strong {
  position: relative;
  display: block;
  margin-top: 8px;
  font-size: 22px;
  line-height: 1.35;
  color: rgba(255, 255, 255, 0.94);
}

section {
  padding: 82px 24px;
}

.section-heading {
  max-width: 780px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-heading h2,
.split-copy h2,
.strength-content h2,
.contact-copy h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1.2;
}

.section-heading p:not(.eyebrow),
.split-copy p,
.strength-content p,
.contact-copy p,
.product-card p,
.intro-grid p {
  color: var(--muted);
}

.compact {
  margin-bottom: 34px;
}

.intro {
  background: var(--white);
}

.intro-grid,
.product-grid,
.honor-grid {
  width: min(1160px, 100%);
  margin: 0 auto;
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.intro-grid article {
  padding: 34px 28px;
  text-align: center;
}

.intro-grid span {
  display: inline-grid;
  place-items: center;
  width: 54px;
  height: 54px;
  margin-bottom: 18px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  font-weight: 800;
}

.intro-grid h3,
.product-card h3 {
  margin-bottom: 8px;
  font-size: 21px;
  font-weight: 700;
}

.split-band {
  display: block;
  padding-inline: max(24px, calc((100vw - 1160px) / 2));
  background:
    linear-gradient(90deg, rgba(7, 35, 56, 0.96) 0%, rgba(7, 35, 56, 0.92) 42%, rgba(7, 35, 56, 0.35) 100%),
    url("assets/warehouse-rails.jpg") center / cover;
  color: var(--white);
}

.split-copy {
  max-width: 620px;
}

.split-copy p {
  color: rgba(255, 255, 255, 0.76);
}

.products {
  background: #eef2f5;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.product-card {
  overflow: hidden;
  background: var(--white);
  box-shadow: 0 14px 34px rgba(8, 42, 66, 0.08);
}

.product-card.featured {
  grid-column: span 1;
  grid-row: span 1;
}

.product-card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.05);
}

.product-card.featured img {
  height: 210px;
}

.product-card-contain img {
  object-fit: contain;
  padding: 0;
  background: #f8fafb;
}

.product-card-plate img {
  object-fit: contain;
  padding: 18px;
  background: #fff;
}

.product-card div {
  padding: 22px;
}

.strength {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: 0;
  background: var(--white);
}

.strength-image {
  min-height: 520px;
  background:
    linear-gradient(rgba(8, 42, 66, 0.05), rgba(8, 42, 66, 0.05)),
    url("assets/company-front.jpg") center / contain no-repeat;
  background-color: #dcecf6;
  filter: saturate(0.78) contrast(1.02);
}

.strength-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 72px max(24px, calc((100vw - 1160px) / 2)) 72px 68px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 10px 0 26px;
}

.stats div {
  padding: 18px;
  border-left: 4px solid var(--orange);
  background: #f2f6f8;
}

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

.stats strong {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
}

.stats span {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.honors {
  background: var(--white);
}

.honor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.honor-grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  padding: 8px;
  background: #f7fafc;
  filter: saturate(0.82) contrast(1.03);
}

.contact {
  padding-inline: max(24px, calc((100vw - 1160px) / 2));
  background: var(--navy);
  color: var(--white);
}

.contact-copy {
  max-width: 860px;
}

.contact-copy p {
  color: rgba(255, 255, 255, 0.74);
}

dl {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
}

dl div {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

dt {
  color: var(--orange);
  font-weight: 800;
}

dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.86);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 26px max(24px, calc((100vw - 1160px) / 2));
  background: #061e31;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

footer strong {
  color: var(--white);
}

.page-hero {
  padding: 188px max(24px, calc((100vw - 1160px) / 2)) 78px;
  background:
    linear-gradient(90deg, rgba(5, 31, 51, 0.96), rgba(5, 31, 51, 0.68)),
    url("assets/warehouse-rails.jpg") center / cover;
  color: var(--white);
}

.page-hero div {
  max-width: 720px;
}

.page-hero h1 {
  margin-bottom: 16px;
}

.page-hero p:not(.eyebrow) {
  max-width: 620px;
  color: rgba(255, 255, 255, 0.76);
}

.weight-table-section {
  background: #eef2f5;
}

.weight-table-wrap {
  width: min(1160px, 100%);
  margin: 0 auto;
  overflow-x: auto;
  background: var(--white);
  box-shadow: 0 20px 50px rgba(8, 42, 66, 0.12);
}

.weight-table-wrap img {
  width: 100%;
  min-width: 720px;
  height: auto;
}

@media (max-width: 920px) {
  .top-strip,
  .nav-cta {
    display: none;
  }

  .navbar {
    min-height: 68px;
    margin-top: 0;
    border-inline: 0;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 10px 24px 18px;
    background: rgba(7, 34, 54, 0.97);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .hero {
    display: block;
    min-height: auto;
    padding: 150px 0 42px;
  }

  .page-hero {
    padding-top: 132px;
  }

  .hero-content {
    margin-top: 0;
  }

  .hero-card {
    position: relative;
    left: auto;
    right: auto;
    bottom: auto;
    width: min(560px, calc(100% - 48px));
    margin: 30px 24px 0;
  }

  .intro-grid,
  .strength,
  .contact {
    grid-template-columns: 1fr;
  }

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

  .product-card.featured {
    grid-column: span 1;
    grid-row: span 1;
  }

  .strength-content {
    padding: 62px 24px;
  }
}

@media (max-width: 620px) {
  .brand {
    min-width: 0;
    max-width: calc(100% - 62px);
  }

  .brand strong {
    font-size: 16px;
    white-space: normal;
    line-height: 1.15;
  }

  .hero {
    padding: 170px 0 28px;
  }

  .hero-media {
    background:
      linear-gradient(90deg, rgba(5, 31, 51, 0.96), rgba(5, 31, 51, 0.7)),
      linear-gradient(180deg, rgba(5, 31, 51, 0.12), rgba(5, 31, 51, 0.6)),
      url("assets/hero-rails.jpg") center / cover;
  }

  .hero-content {
    width: calc(100% - 48px);
    margin: 0 auto;
  }

  h1 {
    font-size: 31px;
    line-height: 1.16;
  }

  section {
    padding-block: 64px;
  }

  .product-grid,
  .honor-grid,
  .stats {
    grid-template-columns: 1fr;
  }

  .product-card.featured {
    grid-column: span 1;
  }

  .product-card.featured img,
  .product-card img {
    height: 230px;
  }

  footer {
    display: grid;
  }
}