:root {
  --bg: #f7fbfd;
  --surface: #ffffff;
  --surface-soft: #eef7fb;
  --text: #14213d;
  --muted: #5f7088;
  --primary: #1676b8;
  --primary-dark: #0d4f88;
  --accent: #21a188;
  --warm: #d98f45;
  --line: #d9e7ee;
  --shadow: 0 18px 50px rgba(18, 68, 101, 0.12);
  --radius: 8px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: clip;
}

body.menu-open,
body.modal-open {
  overflow: hidden;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(33, 161, 136, 0.36);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -60px;
  z-index: 1000;
  padding: 10px 14px;
  color: #fff;
  background: var(--primary-dark);
  border-radius: var(--radius);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin: 0 auto;
}

.section {
  padding: 88px 0;
}

.section-soft {
  background: var(--surface-soft);
}

.section-band {
  position: relative;
  overflow: hidden;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(217, 231, 238, 0.85);
  backdrop-filter: blur(16px);
}

.nav-wrap {
  width: min(calc(100% - 36px), 1240px);
  min-height: 74px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 250px;
  font-weight: 700;
  color: var(--primary-dark);
}

.brand img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.site-nav {
  flex: 1;
}

.site-nav ul {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.mobile-contact-link {
  display: none;
}

.nav-item {
  position: relative;
}

.nav-item > a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 14px;
  color: #2d4159;
  border-radius: var(--radius);
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-item > a::after {
  content: "";
  width: 6px;
  height: 6px;
  margin-left: 6px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}

.nav-item.no-dropdown > a::after {
  display: none;
}

.nav-item:hover > a,
.nav-item:focus-within > a,
.nav-item.active > a {
  color: var(--primary-dark);
  background: #e9f5fb;
}

.dropdown {
  position: absolute;
  left: 0;
  top: calc(100% + 10px);
  width: 190px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
}

.nav-item:not(.no-dropdown):hover .dropdown,
.nav-item:not(.no-dropdown):focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown a {
  display: block;
  padding: 9px 10px;
  font-size: 13px;
  color: #344961;
  border-radius: 6px;
}

.dropdown a:hover,
.dropdown a:focus-visible {
  color: var(--primary-dark);
  background: #eef8fc;
}

.contact-cta,
.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius);
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.contact-cta,
.primary-btn {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 12px 26px rgba(22, 118, 184, 0.22);
}

.secondary-btn {
  color: var(--primary-dark);
  background: #fff;
  border: 1px solid var(--line);
}

.contact-cta:hover,
.primary-btn:hover,
.secondary-btn:hover {
  transform: translateY(-2px);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  margin-left: auto;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px auto;
  background: var(--primary-dark);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-open .menu-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}

.menu-open .menu-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  min-height: calc(100dvh - 74px);
  padding: 112px 0 80px;
  display: flex;
  align-items: center;
  background: linear-gradient(120deg, rgba(247, 251, 253, 0.96), rgba(236, 248, 252, 0.88));
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(247, 251, 253, 0.94) 0%, rgba(247, 251, 253, 0.74) 48%, rgba(247, 251, 253, 0.18) 100%),
    url("./assets/hero-network-logistics.jpg") center center / cover no-repeat;
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 80px;
  background: linear-gradient(180deg, rgba(247, 251, 253, 0), var(--bg));
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 54px;
  align-items: end;
}

.hero-copy {
  max-width: 720px;
}

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

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.08;
  letter-spacing: 0;
  color: #10223b;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.18;
  letter-spacing: 0;
  color: #10223b;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: 0;
}

.hero-copy p {
  max-width: 680px;
  font-size: 18px;
  color: #3c5068;
}

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

.hero-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero-panel div {
  min-height: 120px;
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.hero-panel strong {
  display: block;
  margin-bottom: 6px;
  font-size: 34px;
  line-height: 1;
  color: var(--primary-dark);
}

.hero-panel span {
  color: var(--muted);
}

.section-head {
  max-width: 720px;
  margin-bottom: 38px;
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.section-head p,
.about-grid p,
.digital-grid p,
.policy-panel p {
  color: var(--muted);
}

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

.service-tile,
.cards-four article,
.info-block,
.digital-list article,
.case-card,
.leader-card,
.qr-card,
.logo-showcase {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(18, 68, 101, 0.07);
}

.service-tile {
  min-height: 220px;
  padding: 26px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.service-tile:hover {
  transform: translateY(-4px);
  border-color: rgba(33, 161, 136, 0.45);
  box-shadow: var(--shadow);
}

.service-tile span {
  display: inline-flex;
  margin-bottom: 28px;
  font-weight: 800;
  color: var(--warm);
}

.service-tile p,
.cards-four p,
.info-block p,
.leader-card p,
.case-card p,
.qr-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.service-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.service-links a,
.inline-detail-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 12px;
  color: var(--primary-dark);
  font-size: 14px;
  font-weight: 800;
  background: #eef8fc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.service-links a:hover,
.inline-detail-link:hover {
  color: #fff;
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.inline-detail-link {
  margin-top: 18px;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) 360px;
  gap: 54px;
  align-items: center;
}

.about-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.about-points span,
.policy-list span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  color: var(--primary-dark);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
}

.logo-showcase {
  padding: 34px;
  text-align: center;
}

.logo-showcase img {
  width: 150px;
  height: 150px;
  margin: 0 auto 18px;
  object-fit: contain;
}

.leader-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.leader-card {
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.leader-card:hover,
.leader-card:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(22, 118, 184, 0.34);
  box-shadow: var(--shadow);
}

.leader-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: #e8f2f6;
}

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

.leader-card .role {
  margin-bottom: 12px;
  color: var(--primary);
  font-weight: 700;
}

.leader-more {
  min-height: 40px;
  margin-top: 18px;
  padding: 0 16px;
  color: var(--primary-dark);
  font: inherit;
  font-weight: 800;
  background: #eef8fc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}

.leader-more:hover {
  background: #dff1f8;
}

.leader-modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: grid;
  place-items: center;
  padding: 22px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.leader-modal.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.leader-modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(16, 34, 59, 0.56);
  backdrop-filter: blur(8px);
}

.leader-modal__dialog {
  position: relative;
  width: min(920px, 100%);
  max-height: min(760px, calc(100dvh - 44px));
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 30px 80px rgba(9, 27, 44, 0.3);
}

.leader-modal__close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  width: 44px;
  height: 44px;
  color: var(--primary-dark);
  font-size: 30px;
  line-height: 1;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 50%;
  cursor: pointer;
}

.leader-modal__media {
  background: #e8f2f6;
}

.leader-modal__media img {
  width: 100%;
  height: 100%;
  min-height: 460px;
  object-fit: cover;
}

.leader-modal__content {
  padding: 52px 42px 42px;
  overflow-y: auto;
}

.leader-modal__content h2 {
  margin-bottom: 8px;
}

.leader-modal__role {
  margin-bottom: 24px;
  color: var(--primary);
  font-weight: 800;
}

.leader-modal__bio p {
  color: var(--muted);
}

.leader-modal__bio p:last-child {
  margin-bottom: 0;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 30px;
  align-items: stretch;
}

.feature-image {
  min-height: 540px;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

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

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

.info-block {
  padding: 22px 24px;
}

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

.cards-four article {
  min-height: 210px;
  padding: 26px;
}

.cards-four article:nth-child(2) {
  border-top: 4px solid var(--accent);
}

.cards-four article:nth-child(3) {
  border-top: 4px solid var(--warm);
}

.cards-four article:nth-child(4) {
  border-top: 4px solid var(--primary);
}

.digital-grid {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 54px;
  align-items: start;
}

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

.digital-list article {
  padding: 24px;
}

.policy-panel {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 42px;
  align-items: center;
  padding: 42px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.policy-panel > .inline-detail-link {
  grid-column: 1 / -1;
  width: fit-content;
  margin-top: -18px;
}

.policy-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.case-card {
  overflow: hidden;
}

.case-card img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  background: #e8f2f6;
}

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

.case-card span {
  display: inline-flex;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 800;
  color: var(--accent);
}

.contact-section {
  background: linear-gradient(135deg, #f7fbfd, #eaf7f4);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 42px;
  align-items: center;
}

.contact-lines {
  margin-top: 26px;
}

.contact-lines p {
  margin-bottom: 10px;
  color: #354a63;
}

.contact-lines a {
  color: var(--primary-dark);
  font-weight: 700;
}

.qr-card {
  padding: 24px;
  text-align: center;
}

.qr-card img {
  width: 210px;
  height: 210px;
  margin: 0 auto 16px;
  object-fit: contain;
  border: 1px solid var(--line);
}

.site-footer {
  background: #10223b;
  color: #dbe9f1;
}

.footer-inner {
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  color: #fff;
  font-weight: 700;
}

.back-top {
  position: fixed;
  right: 20px;
  bottom: 22px;
  z-index: 90;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  color: #fff;
  background: var(--primary-dark);
  box-shadow: var(--shadow);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.back-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.detail-hero {
  padding: 110px 0 74px;
  background:
    linear-gradient(90deg, rgba(247, 251, 253, 0.98), rgba(247, 251, 253, 0.82)),
    url("./assets/hero-network-logistics.jpg") center center / cover no-repeat;
  border-bottom: 1px solid var(--line);
}

.detail-hero h1 {
  max-width: 860px;
  margin-bottom: 18px;
  font-size: clamp(38px, 5vw, 64px);
}

.detail-hero p:not(.eyebrow) {
  max-width: 780px;
  color: var(--muted);
  font-size: 18px;
}

.detail-section {
  padding: 74px 0;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 32px;
  align-items: start;
}

.detail-main,
.detail-side,
.case-detail-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(18, 68, 101, 0.07);
}

.detail-main {
  padding: 42px;
}

.detail-main h2 {
  margin-top: 34px;
  font-size: 28px;
}

.detail-main h2:first-child {
  margin-top: 0;
}

.detail-main p {
  color: #40546c;
}

.detail-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 16px 0 0;
  list-style: none;
}

.detail-list li {
  position: relative;
  padding: 12px 14px 12px 36px;
  color: #304861;
  background: #f6fbfd;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.detail-list li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 22px;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
}

.detail-side {
  position: sticky;
  top: 96px;
  padding: 22px;
}

.detail-side h3 {
  margin-bottom: 16px;
}

.detail-side a {
  display: block;
  padding: 11px 12px;
  color: #344961;
  border-radius: 6px;
}

.detail-side a:hover,
.detail-side a.active {
  color: var(--primary-dark);
  background: #eef8fc;
}

.logo-side {
  text-align: center;
}

.logo-side img {
  width: 150px;
  height: 150px;
  margin: 0 auto 16px;
  object-fit: contain;
}

.case-detail-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.case-detail-card {
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
}

.case-detail-card img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  background: #e8f2f6;
}

.case-detail-card div {
  padding: 26px 28px 30px;
}

.case-detail-card span {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--accent);
  font-weight: 800;
}

.case-detail-card h2 {
  margin-bottom: 16px;
  font-size: clamp(22px, 2.2vw, 28px);
  line-height: 1.35;
}

.case-detail-card p {
  color: #40546c;
}

@media (max-width: 1120px) {
  .nav-wrap {
    gap: 14px;
  }

  .brand {
    min-width: 220px;
  }

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

  .service-overview,
  .cards-four,
  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 900px) {
  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    top: 74px;
    height: calc(100dvh - 74px);
    padding: 18px 20px 30px;
    overflow-y: auto;
    background: #fff;
    border-top: 1px solid var(--line);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease, visibility 0.2s ease;
  }

  .menu-open .site-nav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .site-nav ul {
    display: block;
  }

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

  .nav-item > a {
    justify-content: space-between;
    min-height: 54px;
    padding: 0;
    font-size: 16px;
  }

  .dropdown {
    position: static;
    width: 100%;
    max-height: 0;
    padding: 0;
    overflow: hidden;
    visibility: visible;
    opacity: 1;
    transform: none;
    border: 0;
    box-shadow: none;
    transition: max-height 0.24s ease;
  }

  .nav-item.open .dropdown {
    max-height: 360px;
    padding: 0 0 12px;
  }

  .dropdown a {
    padding: 10px 12px;
    background: #f5fafc;
  }

  .contact-cta {
    display: none;
  }

  .mobile-contact-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    margin-top: 18px;
    color: #fff;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius);
  }

  .hero {
    padding-top: 84px;
  }

  .hero-grid,
  .about-grid,
  .split-layout,
  .digital-grid,
  .policy-panel,
  .contact-grid,
  .leader-modal__dialog,
  .detail-layout {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    max-width: 520px;
  }

  .feature-image {
    min-height: 360px;
  }

  .detail-side {
    position: static;
  }

  .leader-modal__media img {
    max-height: 320px;
    min-height: 0;
  }

  .case-detail-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .section {
    padding: 64px 0;
  }

  .brand {
    min-width: 0;
  }

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

  .hero-panel,
  .service-overview,
  .leader-grid,
  .cards-four,
  .digital-list,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy p {
    font-size: 16px;
  }

  .hero-panel div {
    min-height: auto;
  }

  .policy-panel {
    padding: 28px;
  }

  .detail-hero {
    padding: 88px 0 56px;
  }

  .detail-main {
    padding: 28px;
  }

  .case-detail-card div {
    padding: 26px;
  }

  .leader-modal {
    padding: 14px;
  }

  .leader-modal__content {
    padding: 34px 24px 26px;
  }

  .leader-modal__close {
    top: 10px;
    right: 10px;
  }

  .footer-inner {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}