@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&family=Roboto:wght@400;500;700&display=swap");

:root {

  --primary: #002B49;
  --secondary: #005691;
  --accent: #C59B5F;
  --text-main: #1A1A1A;
  --text-gray: #555555;
  --bg-light: #F4F6F9;
  --white: #FFFFFF;
  --border: #E0E0E0;

  --radius: 2px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Roboto", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--text-main);
  background-color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--secondary); }
img { max-width: 100%; display: block; }
ul { list-style: none; padding: 0; margin: 0; }


.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 80px 0; }
.bg-light { background-color: var(--bg-light); }


.topbar {
  background-color: var(--primary);
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  padding: 10px 0;
}
.topbar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar-info span { margin-right: 20px; display: inline-flex; align-items: center; gap: 6px; }
.lang-switch {
  margin-left: 10px;
  padding: 2px 8px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 2px;
  font-size: 12px;
  transition: all 0.3s;
  color: #fff;
}
.lang-switch:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
  color: #fff;
}


.nav {
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav .wrap {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-head {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--border);
  color: var(--primary);
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.nav-toggle-bars {
  width: 18px;
  height: 2px;
  background: var(--primary);
  position: relative;
  display: inline-block;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--primary);
}
.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }

.menu {
  display: flex;
  gap: 32px;
}
.menu a {
  font-weight: 500;
  font-size: 15px;
  color: var(--text-main);
  position: relative;
  padding: 28px 0;
}
.menu a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--secondary);
  transition: width 0.3s ease;
}
.menu a:hover { color: var(--secondary); }
.menu a:hover::after { width: 100%; }

.nav-btn {
  background: var(--secondary);
  color: var(--white);
  padding: 10px 24px;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 14px;
}
.nav-btn:hover {
  background: var(--primary);
  color: var(--white);
}


.hero {
  position: relative;
  height: 600px;
  display: flex;
  align-items: center;
  background: linear-gradient(rgba(0, 43, 73, 0.7), rgba(0, 43, 73, 0.6)),
              url("../images/hero-logistics.jpg") center/cover;
  color: var(--white);
}
.hero-content {
  max-width: 650px;
  animation: fadeIn 1s ease-out;
}
.hero-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.hero h1 {
  font-size: 48px;
  line-height: 1.2;
  margin: 0 0 24px;
  font-weight: 700;
}
.hero p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
  font-weight: 300;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.3s;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--secondary);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--primary);
}
.btn-outline {
  border-color: var(--white);
  color: var(--white);
  margin-left: 16px;
}
.btn-outline:hover {
  background: var(--white);
  color: var(--primary);
}


.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-header h2 {
  font-size: 32px;
  color: var(--primary);
  margin: 0 0 16px;
  position: relative;
  display: inline-block;
}
.section-header h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 12px auto 0;
}
.section-header p {
  color: var(--text-gray);
  max-width: 600px;
  margin: 0 auto;
}


.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}
.service-card {
  background: var(--white);
  padding: 40px 30px;
  border: 1px solid var(--border);
  border-top: 4px solid var(--secondary);
  transition: transform 0.3s, box-shadow 0.3s;
}
.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}
.service-icon {
  font-size: 40px;
  color: var(--secondary);
  margin-bottom: 20px;
  font-weight: bold;
  opacity: 0.2;
}
.service-card h3 {
  font-size: 20px;
  margin: 0 0 15px;
  color: var(--primary);
}
.service-card p {
  color: var(--text-gray);
  font-size: 14px;
  margin: 0;
}
.service-list {
  margin-top: 40px;
  padding: 28px 30px;
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.service-list h3 {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 20px;
}
.service-list ul {
  list-style: disc;
  padding-left: 20px;
  columns: 2;
  column-gap: 40px;
  margin: 0;
  color: var(--text-gray);
  font-size: 14px;
}
.service-list li {
  margin: 6px 0;
  break-inside: avoid;
}


.about-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-content h2 {
  font-size: 36px;
  color: var(--primary);
  margin-bottom: 24px;
}
.about-content p {
  color: var(--text-gray);
  margin-bottom: 30px;
  font-size: 16px;
}
.stats-row {
  display: flex;
  gap: 40px;
  border-top: 1px solid var(--border);
  padding-top: 30px;
}
.stat-item strong {
  display: block;
  font-size: 32px;
  color: var(--secondary);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 8px;
}
.stat-item span {
  font-size: 13px;
  text-transform: uppercase;
  color: var(--text-gray);
  letter-spacing: 1px;
}
.about-img {
  position: relative;
}
.about-img img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
}
.about-img::before {
  content: "";
  position: absolute;
  top: -20px;
  left: -20px;
  width: 100%;
  height: 100%;
  border: 2px solid var(--accent);
  z-index: -1;
  border-radius: var(--radius);
}
.about-meta {
  margin: 20px 0 24px;
  padding: 18px 20px;
  background: #f7f9fb;
  border: 1px solid var(--border);
  color: var(--text-gray);
  font-size: 14px;
}
.about-meta strong {
  display: block;
  color: var(--primary);
  margin-bottom: 8px;
  font-weight: 600;
}
.about-meta ul {
  list-style: disc;
  padding-left: 18px;
  margin: 0;
}
.about-meta li { margin: 6px 0; }


.core-services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.core-card {
  position: relative;
  height: 400px;
  overflow: hidden;
  group: group;
}
.core-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s;
}
.core-card:hover img {
  transform: scale(1.1);
}
.core-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 43, 73, 0.85);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 40px;
  color: var(--white);
  opacity: 0.9;
  transition: opacity 0.3s;
}
.core-card:hover .core-overlay {
  background: rgba(0, 43, 73, 0.95);
}
.core-overlay h3 {
  font-size: 24px;
  margin: 0 0 16px;
  color: var(--accent);
}
.core-overlay p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 24px;
}
.link-arrow {
  color: var(--white);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.core-detail {
  padding: 80px 0 100px;
  background: #fff;
  position: relative;
}
.core-detail::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 300px;
  background: var(--bg-light);
  z-index: 0;
}
.core-detail .wrap {
  position: relative;
  z-index: 1;
}

.core-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 32px;
  margin-top: 50px;
}

.core-item {
  background: var(--white);
  border-radius: 4px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.core-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.12);
  border-top-color: var(--accent);
}

.core-header {
  padding: 24px 30px;
  border-bottom: 1px solid #f0f0f0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fff;
}

.core-num {
  font-size: 32px;
  font-weight: 700;
  color: #eef1f5;
  line-height: 1;
  font-family: 'Roboto', sans-serif;
}

.core-item:hover .core-num {
  color: var(--accent);
  opacity: 0.3;
}

.core-header h4 {
  margin: 0;
  color: var(--primary);
  font-size: 18px;
  font-weight: 600;
  flex: 1;
}

.core-body {
  padding: 24px 30px;
  flex: 1;
  background: #fff;
}

.core-body p {
  margin: 0;
  color: var(--text-gray);
  font-size: 14px;
  line-height: 1.6;
}

.core-sublist {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed #eee;
}

.core-sublist ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.core-sublist li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  font-size: 13px;
  color: #666;
}

.core-sublist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
}


.cap-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.cap-item {
  background: var(--white);
  padding: 24px;
  border-left: 4px solid var(--border);
  transition: border-color 0.3s;
}
.cap-item:hover {
  border-left-color: var(--accent);
  background: #fafafa;
}
.cap-item h4 {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 18px;
}
.cap-item p {
  margin: 0;
  font-size: 14px;
  color: var(--text-gray);
}
.cap-item ul {
  list-style: disc;
  padding-left: 18px;
  margin: 10px 0 0;
  font-size: 14px;
  color: var(--text-gray);
}


.mission-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}
.mission-card {
  text-align: center;
  padding: 40px 30px;
  background: var(--white);
  border: 1px solid var(--border);
}
.mission-card h4 {
  font-size: 20px;
  color: var(--primary);
  margin: 10px 0 15px;
}
.mission-label {
  color: var(--accent);
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
}


.cta-section {
  background: var(--primary);
  color: var(--white);
  text-align: center;
  padding: 80px 20px;
}
.cta-section h2 { margin: 0 0 16px; font-size: 32px; }
.cta-section p { color: rgba(255,255,255,0.7); margin-bottom: 32px; }
.btn-gold {
  background: var(--accent);
  color: var(--primary);
  font-weight: 700;
}
.btn-gold:hover {
  background: #fff;
}


footer {
  background: #001A2C;
  color: #889bb0;
  padding: 80px 0 30px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}
.footer-col h5 {
  color: var(--white);
  font-size: 16px;
  margin-bottom: 24px;
  font-weight: 600;
}
.footer-col p { margin-bottom: 12px; line-height: 1.6; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 30px;
  text-align: center;
  color: #556b80;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
  .wrap { padding: 0 20px; }
  .topbar .wrap { flex-direction: column; align-items: flex-start; gap: 8px; }
  .topbar-info { display: flex; flex-wrap: wrap; gap: 8px 16px; }
  .nav .wrap {
    height: auto;
    padding: 16px 20px;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .nav-head { width: 100%; justify-content: space-between; }
  .nav-toggle { display: inline-flex; }
  .menu { display: none; flex-direction: column; gap: 10px; }
  .menu a { padding: 6px 0; }
  .menu a::after { display: none; }
  .nav-btn { display: none; width: 100%; text-align: center; }
  .nav.open .menu { display: flex; }
  .nav.open .nav-btn { display: inline-flex; }
  .about-wrap { grid-template-columns: 1fr; }
  .stats-row { flex-direction: column; gap: 18px; }
  .core-services { grid-template-columns: 1fr; }
  .core-card { height: 320px; }
  .core-overlay { padding: 24px; }
  .core-overlay h3 { font-size: 20px; }
  .core-overlay p { font-size: 14px; }
  .core-grid { grid-template-columns: 1fr; }
  .service-list ul { columns: 1; }
  .services-grid { grid-template-columns: 1fr; }
  .cap-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .section { padding: 60px 0; }
  .hero { height: auto; min-height: 420px; padding: 80px 0; }
  .hero h1 { font-size: 34px; }
  .hero p { font-size: 16px; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  .nav .wrap { padding: 16px 16px; }
  .hero h1 { font-size: 28px; }
  .hero .btn { width: 100%; }
  .hero .btn-outline { margin-left: 0; margin-top: 12px; }
  .service-card { padding: 28px 20px; }
  .core-header { padding: 18px 20px; }
  .core-body { padding: 18px 20px; }
  .cta-section h2 { font-size: 26px; }
}