:root {
  --ink: #102033;
  --ink-soft: #4f6072;
  --navy: #0d3f6f;
  --blue: #176ca8;
  --sky: #58b4d8;
  --teal: #2c8a9d;
  --amber: #d7932a;
  --green: #4f946a;
  --line: #d9e4ec;
  --paper: #ffffff;
  --mist: #f2f7f9;
  --sand: #f6f1e7;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  line-height: 1.65;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 72px;
  padding: 12px 48px;
  border-bottom: 1px solid rgba(16, 32, 51, 0.1);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 260px;
}

.brand img {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  object-fit: cover;
}

.brand strong {
  display: block;
  font-size: 1rem;
  line-height: 1.2;
}

.brand small {
  display: block;
  margin-top: 2px;
  color: var(--ink-soft);
  font-size: 0.72rem;
  letter-spacing: 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  color: #34475b;
  font-size: 0.94rem;
  white-space: nowrap;
}

.nav a {
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

.nav a:hover {
  color: var(--blue);
  border-color: var(--amber);
}

.header-action,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 6px;
  font-weight: 700;
}

.header-action {
  width: 86px;
  color: #fff;
  background: var(--blue);
  box-shadow: 0 10px 20px rgba(23, 108, 168, 0.2);
}

.hero {
  position: relative;
  min-height: 78vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background-image: url("assets/hero-ship.jpg");
  background-position: center;
  background-size: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 32, 54, 0.9) 0%, rgba(11, 55, 90, 0.72) 42%, rgba(12, 73, 96, 0.24) 100%),
    linear-gradient(0deg, rgba(10, 22, 35, 0.34), rgba(10, 22, 35, 0.02));
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 96px));
  margin: 0 auto;
  padding: 84px 0 58px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--amber);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: 4.25rem;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 700px;
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.18rem;
}

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

.btn {
  min-width: 154px;
  padding: 0 22px;
  border: 1px solid transparent;
}

.btn.primary {
  color: #09223b;
  background: #fff;
}

.btn.secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.58);
  background: rgba(255, 255, 255, 0.1);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(130px, 1fr));
  gap: 18px;
  max-width: 830px;
  margin: 54px 0 0;
}

.hero-stats div {
  padding: 14px 18px;
  border-left: 3px solid var(--amber);
  background: rgba(255, 255, 255, 0.12);
}

.hero-stats dt {
  margin: 0;
  font-size: 1.55rem;
  font-weight: 800;
  line-height: 1.1;
}

.hero-stats dd {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.88rem;
}

.service-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: min(1180px, calc(100% - 96px));
  margin: -38px auto 0;
  position: relative;
  z-index: 2;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: 0 22px 45px rgba(25, 62, 88, 0.14);
}

.strip-item {
  min-height: 108px;
  padding: 24px 24px;
  border-right: 1px solid var(--line);
}

.strip-item:last-child {
  border-right: 0;
}

.strip-item strong {
  display: block;
  font-size: 1.1rem;
}

.strip-item span {
  display: block;
  margin-top: 7px;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.section {
  width: min(1180px, calc(100% - 96px));
  margin: 0 auto;
  padding: 96px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 36px;
}

.section-heading h2,
.image-band h2,
.about h2,
.warehouse h2,
.contact h2 {
  margin: 0;
  color: var(--ink);
  font-size: 2.45rem;
  line-height: 1.22;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.image-band p:not(.eyebrow),
.about-copy p,
.warehouse-copy p,
.contact-copy p {
  color: var(--ink-soft);
  font-size: 1rem;
}

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

.service-card {
  min-height: 242px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.service-card:nth-child(2),
.service-card:nth-child(5) {
  background: var(--mist);
}

.service-card span {
  color: var(--teal);
  font-size: 0.82rem;
  font-weight: 900;
}

.service-card h3 {
  margin: 18px 0 10px;
  font-size: 1.28rem;
  line-height: 1.35;
}

.service-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

.image-band {
  display: grid;
  grid-template-columns: minmax(340px, 0.95fr) minmax(360px, 1fr);
  align-items: center;
  gap: 56px;
  padding: 74px max(48px, calc((100vw - 1180px) / 2));
  background: var(--sand);
}

.image-band img {
  width: 100%;
  height: 330px;
  object-fit: cover;
  border-radius: 8px;
}

.image-band p:not(.eyebrow) {
  max-width: 620px;
}

.about {
  display: grid;
  grid-template-columns: minmax(420px, 1fr) minmax(320px, 0.78fr);
  align-items: center;
  gap: 58px;
}

.about-copy p {
  margin: 18px 0 0;
}

.about-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 30px;
}

.about-points div {
  min-height: 142px;
  padding: 20px;
  border-top: 3px solid var(--blue);
  background: var(--mist);
}

.about-points strong {
  display: block;
  color: var(--blue);
  font-size: 1.6rem;
}

.about-points span {
  display: block;
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.office-photo {
  margin: 0;
}

.office-photo img {
  height: 500px;
  width: 100%;
  object-fit: cover;
  border-radius: 8px;
}

.office-photo figcaption {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.warehouse {
  display: grid;
  grid-template-columns: minmax(360px, 1fr) minmax(360px, 0.92fr);
  align-items: stretch;
  gap: 0;
  background: #102033;
  color: #fff;
}

.warehouse-image img {
  width: 100%;
  height: 100%;
  min-height: 560px;
  object-fit: cover;
}

.warehouse-copy {
  padding: 82px max(48px, calc((100vw - 1180px) / 2)) 82px 64px;
}

.warehouse h2 {
  color: #fff;
}

.warehouse-copy p {
  color: rgba(255, 255, 255, 0.78);
}

.flow {
  display: grid;
  gap: 12px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.flow li {
  position: relative;
  min-height: 48px;
  padding: 12px 18px 12px 42px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
  color: #fff;
  background: rgba(255, 255, 255, 0.07);
}

.flow li::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 20px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber);
}

.network-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.92fr) minmax(380px, 1fr);
  gap: 28px;
}

.network-photo img {
  height: 100%;
  min-height: 420px;
  width: 100%;
  object-fit: cover;
  border-radius: 8px;
}

.route-list {
  display: grid;
  gap: 14px;
}

.route-card {
  min-height: 96px;
  padding: 22px 24px;
  border-left: 4px solid var(--green);
  background: var(--mist);
}

.route-card:nth-child(even) {
  border-color: var(--amber);
  background: #fff9ef;
}

.route-card strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 1.05rem;
}

.route-card span {
  color: var(--ink-soft);
}

.contact {
  display: grid;
  grid-template-columns: minmax(360px, 0.9fr) minmax(440px, 1.1fr);
  gap: 44px;
  padding: 86px max(48px, calc((100vw - 1180px) / 2));
  background: var(--navy);
  color: #fff;
}

.contact h2 {
  color: #fff;
}

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

.contact-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 0;
  font-style: normal;
}

.contact-panel div {
  min-height: 96px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.contact-panel .wide {
  grid-column: 1 / -1;
}

.contact-panel span {
  display: block;
  margin-bottom: 7px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.85rem;
}

.contact-panel a,
.contact-panel p {
  margin: 0;
  color: #fff;
  font-weight: 700;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 26px 48px;
  color: #6c7a86;
  background: #f9fbfc;
  font-size: 0.9rem;
}

@media (max-width: 1080px) {
  .site-header {
    padding: 12px 28px;
  }

  .nav {
    gap: 18px;
  }

  .hero h1 {
    font-size: 3.35rem;
  }

  .service-grid,
  .about-points {
    grid-template-columns: repeat(2, 1fr);
  }

  .about,
  .image-band,
  .warehouse,
  .network-layout,
  .contact {
    grid-template-columns: 1fr;
  }

  .warehouse-copy {
    padding: 64px 48px;
  }
}

@media (max-width: 820px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .brand {
    min-width: auto;
  }

  .nav {
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .header-action {
    position: absolute;
    right: 28px;
    top: 18px;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner,
  .section,
  .service-strip {
    width: min(100% - 40px, 1180px);
  }

  .hero-inner {
    padding: 84px 0 66px;
  }

  .hero h1 {
    font-size: 2.55rem;
  }

  .hero-copy {
    font-size: 1rem;
  }

  .hero-stats,
  .service-strip,
  .service-grid,
  .about-points,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .service-strip {
    margin-top: 0;
    box-shadow: none;
  }

  .strip-item {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .strip-item:last-child {
    border-bottom: 0;
  }

  .section {
    padding: 68px 0;
  }

  .section-heading h2,
  .image-band h2,
  .about h2,
  .warehouse h2,
  .contact h2 {
    font-size: 2rem;
  }

  .image-band,
  .contact {
    padding: 58px 20px;
  }

  .office-photo img,
  .network-photo img,
  .warehouse-image img {
    min-height: 0;
    height: 320px;
  }

  .warehouse-copy {
    padding: 56px 20px;
  }

  .site-footer {
    flex-direction: column;
    padding: 24px 20px;
  }
}

@media (max-width: 520px) {
  .site-header {
    padding: 12px 18px;
  }

  .brand strong {
    font-size: 0.92rem;
  }

  .header-action {
    right: 18px;
    width: 72px;
  }

  .nav {
    gap: 16px;
    font-size: 0.88rem;
  }

  .hero-inner {
    width: calc(100% - 32px);
  }

  .hero h1 {
    font-size: 2.15rem;
  }

  .btn {
    width: 100%;
  }

  .service-card {
    padding: 24px;
  }
}