/* ===== Reset & Base ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: #333;
  line-height: 1.6;
  background: #fff;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

img {
  max-width: 100%;
  height: auto;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  object-fit: contain;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: #1a3a6b;
}

.logo-sub {
  font-size: 12px;
  color: #888;
  margin-top: 2px;
}

.nav {
  display: flex;
  gap: 28px;
}

.nav a {
  font-size: 14px;
  color: #555;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: all 0.3s;
}

.nav a:hover,
.nav a.active {
  color: #1a3a6b;
  border-bottom-color: #1a3a6b;
}

/* ===== Dropdown ===== */
.dropdown {
  position: relative;
}
.dropbtn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  color: #555;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: all 0.3s;
}
.dropbtn:hover {
  color: #1a3a6b;
  border-bottom-color: #1a3a6b;
}
.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  min-width: 160px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
  border-radius: 6px;
  padding: 6px 0;
  z-index: 1000;
}
.dropdown-content a {
  display: block;
  color: #555;
  font-size: 14px;
  padding: 10px 18px;
  border-bottom: none;
  white-space: nowrap;
  text-align: left;
}
.dropdown-content a:hover {
  color: #1a3a6b;
  background: #f0f4fa;
}
.dropdown:hover .dropdown-content {
  display: block;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: #333;
  border-radius: 2px;
  transition: 0.3s;
}

/* ===== Hero ===== */
.hero {
  margin-top: 72px;
  background: linear-gradient(135deg, #0a1f3d 0%, #1a3a6b 40%, #2a5fa8 100%);
  color: #fff;
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero h1 {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.hero p {
  font-size: 18px;
  opacity: 0.9;
  max-width: 800px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.highlight-text {
  color: #ffd760;
  font-weight: 600;
}

.hero-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  padding: 6px 20px;
  font-size: 13px;
  margin-bottom: 24px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  border: none;
}

.btn-primary {
  background: #fff;
  color: #1a3a6b;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.5);
  margin-left: 16px;
}

.btn-outline:hover {
  border-color: #fff;
  transform: translateY(-2px);
}

/* ===== Section ===== */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 32px;
  font-weight: 700;
  color: #1a3a6b;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: #888;
  font-size: 16px;
  margin-bottom: 50px;
}

.section-light {
  background: #f8f9fc;
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h3 {
  font-size: 24px;
  color: #1a3a6b;
  margin-bottom: 20px;
}

.about-text p {
  color: #555;
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 15px;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat-card {
  background: #fff;
  border-radius: 12px;
  padding: 24px 16px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s;
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: #2a5fa8;
}

.stat-label {
  font-size: 13px;
  color: #888;
  margin-top: 6px;
}

/* ===== Timeline ===== */
.timeline {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 120px;
  top: 10px;
  bottom: 10px;
  width: 3px;
  background: linear-gradient(to bottom, #2a5fa8, #aac4e8, #2a5fa8);
  border-radius: 2px;
}

.timeline-item {
  display: flex;
  margin-bottom: 50px;
  position: relative;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-year {
  width: 100px;
  min-width: 100px;
  text-align: right;
  padding-right: 30px;
  font-size: 22px;
  font-weight: 800;
  color: #2a5fa8;
  padding-top: 4px;
}

.timeline-year.today {
  color: #e67e22;
}

.timeline-content {
  flex: 1;
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid #eee;
  margin-left: 30px;
  position: relative;
  transition: all 0.3s;
}

.timeline-content:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.timeline-content::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 12px;
  border: 10px solid transparent;
  border-left-color: #fff;
}

.timeline-content::after {
  content: '';
  position: absolute;
  left: -24px;
  top: 12px;
  width: 16px;
  height: 16px;
  background: #2a5fa8;
  border: 3px solid #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 3px #2a5fa8;
}

.timeline-item:last-child .timeline-content::after {
  background: #e67e22;
  box-shadow: 0 0 0 3px #e67e22;
}

.timeline-photo {
  margin-bottom: 16px;
  border-radius: 8px;
  overflow: hidden;
  max-height: 250px;
}

.timeline-photo img {
  width: 100%;
  height: auto;
  max-height: 400px;
  border-radius: 8px;
  transition: transform 0.4s;
}

.timeline-photo img:hover {
  transform: scale(1.03);
}

.timeline-photos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 16px;
  border-radius: 8px;
  overflow: hidden;
}

.timeline-photos-grid img {
  width: 100%;
  height: auto;
  max-height: 220px;
  transition: transform 0.4s;
}

.timeline-photos-grid img:hover {
  transform: scale(1.05);
}

.timeline-text h3 {
  font-size: 18px;
  color: #1a3a6b;
  margin-bottom: 10px;
}

.timeline-text p {
  font-size: 14px;
  color: #666;
  line-height: 1.7;
}

/* ===== Services ===== */
.service-group {
  margin-bottom: 50px;
}

.service-group:last-child {
  margin-bottom: 0;
}

.service-group-title {
  font-size: 22px;
  color: #1a3a6b;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #e8eef6;
  font-weight: 700;
}

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

.service-card {
  background: #fff;
  border-radius: 12px;
  padding: 30px 22px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  transition: all 0.3s;
  border: 1px solid #eee;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.1);
  border-color: #2a5fa8;
}

.service-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, #e8eef6, #d4e0f0);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
}

.service-card h3 {
  font-size: 16px;
  color: #1a3a6b;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 13px;
  color: #888;
  line-height: 1.7;
}

/* ===== Subsidiary ===== */
.subsidiary {
  background: linear-gradient(135deg, #0f2b52, #1a3a6b);
  color: #fff;
}

.subsidiary .section-title {
  color: #fff;
}

.subsidiary .section-subtitle {
  color: rgba(255, 255, 255, 0.6);
}

.subsidiary-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.subsidiary-content h3 {
  font-size: 24px;
  margin-bottom: 20px;
}

.subsidiary-content p {
  opacity: 0.85;
  line-height: 1.8;
  margin-bottom: 16px;
}

.subsidiary-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  padding: 8px 24px;
  font-size: 14px;
  margin: 6px;
  transition: all 0.3s;
}

.subsidiary-tag:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ===== Certifications ===== */
.cert-subtitle {
  font-size: 20px;
  color: #1a3a6b;
  margin-bottom: 24px;
  margin-top: 40px;
  padding-bottom: 8px;
  border-bottom: 2px solid #e8eef6;
  font-weight: 600;
}

.cert-grid {
  display: grid;
  gap: 16px;
}

.cert-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.cert-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.cert-item {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 10px;
  padding: 16px;
  text-align: center;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.cert-item:hover {
  border-color: #2a5fa8;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  transform: translateY(-3px);
}

.cert-item img {
  width: 100%;
  max-height: 200px;
  object-fit: contain;
  border-radius: 6px;
  background: #f8f9fc;
}

.cert-item p {
  font-size: 13px;
  color: #555;
  line-height: 1.5;
  font-weight: 500;
}

/* Patent cards */
.cert-patent {
  padding: 24px 16px;
  gap: 8px;
  min-height: 160px;
  justify-content: center;
}

.patent-icon {
  font-size: 32px;
  margin-bottom: 4px;
}

.cert-patent h4 {
  font-size: 15px;
  color: #1a3a6b;
  font-weight: 600;
  line-height: 1.5;
}

.cert-patent p {
  font-size: 12px;
  color: #888;
  font-weight: 400;
}

.patent-date {
  color: #999 !important;
  font-size: 11px !important;
}

/* Honor list */
.honor-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.honor-item {
  background: #f8f9fc;
  border: 1px solid #e8eef6;
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 14px;
  color: #555;
  transition: all 0.3s;
}

.honor-item:hover {
  border-color: #2a5fa8;
  background: #f0f4fa;
}

.honor-item strong {
  color: #1a3a6b;
}

/* ===== Clients ===== */
.client-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.client-item {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 10px;
  padding: 20px 28px;
  font-size: 15px;
  font-weight: 600;
  color: #555;
  transition: all 0.3s;
}

.client-item:hover {
  border-color: #2a5fa8;
  color: #1a3a6b;
  transform: translateY(-3px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

.contact-info h3 {
  font-size: 20px;
  color: #1a3a6b;
  margin-bottom: 20px;
}

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}

.contact-item .icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: #e8eef6;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.contact-item .label {
  font-size: 13px;
  color: #999;
}

.contact-item .value {
  font-size: 15px;
  color: #333;
  font-weight: 500;
}

.contact-form {
  background: #fff;
  border-radius: 12px;
  padding: 36px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid #eee;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: #555;
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #2a5fa8;
}

.form-group textarea {
  height: 120px;
  resize: vertical;
}

.btn-submit {
  background: linear-gradient(135deg, #1a3a6b, #2a5fa8);
  color: #fff;
  padding: 14px 36px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  width: 100%;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(42, 95, 168, 0.3);
}

/* ===== Footer ===== */
.footer {
  background: #0a1a30;
  color: rgba(255, 255, 255, 0.6);
  padding: 40px 0;
  text-align: center;
  font-size: 14px;
}

.footer a {
  color: rgba(255, 255, 255, 0.7);
}

.footer a:hover {
  color: #fff;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
}

.footer .brand {
  font-size: 16px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 8px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cert-grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }
  .timeline-photos-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .timeline-photos-grid img {
    height: 130px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 60px;
  }
  .nav {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    gap: 0;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    z-index: 999;
  }
  .nav a {
    padding: 16px 20px;
    font-size: 16px;
    border-bottom: 1px solid #f0f0f0;
    border-bottom-color: transparent;
  }
  .nav a:hover,
  .nav a.active {
    border-bottom-color: transparent;
    background: #f5f7fa;
  }
  .nav .dropdown {
    width: 100%;
  }
  .nav .dropbtn {
    width: 100%;
    text-align: left;
    padding: 16px 20px;
    font-size: 16px;
    border-bottom: 1px solid #f0f0f0;
    background: none;
  }
  .nav .dropdown-content {
    position: static;
    display: none;
    box-shadow: none;
    border-radius: 0;
    background: #f7f9fc;
    min-width: 0;
    padding: 0;
  }
  .nav .dropdown-content a {
    padding: 14px 20px 14px 36px;
    font-size: 15px;
    border-bottom: 1px solid #f0f0f0;
  }
  .nav .dropdown.open .dropdown-content {
    display: block;
  }
  .hamburger {
    display: flex;
  }

  .hero {
    margin-top: 60px;
    padding: 60px 0 50px;
  }
  .hero h1 {
    font-size: 28px;
  }
  .hero p {
    font-size: 16px;
    margin-bottom: 30px;
  }
  .hero-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  .btn-outline {
    margin-left: 0;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
  .stat-card {
    padding: 18px 12px;
  }
  .stat-number {
    font-size: 26px;
  }

  .services-grid {
    grid-template-columns: 1fr 1fr;
  }

  .service-card {
    padding: 24px 16px;
  }

  .product-brands {
    gap: 4px;
    margin-top: 10px;
    padding-top: 8px;
  }

  .section {
    padding: 50px 0;
  }
  .section-title {
    font-size: 26px;
  }

  .contact-form {
    padding: 24px;
  }

  /* Timeline mobile */
  .timeline::before {
    left: 60px;
  }

  .timeline-item {
    flex-direction: column;
    padding-left: 60px;
  }

  .timeline-year {
    width: auto;
    min-width: 0;
    text-align: left;
    padding-right: 0;
    padding-left: 40px;
    margin-bottom: 10px;
    font-size: 18px;
  }

  .timeline-content {
    margin-left: 0;
    padding: 16px;
  }

  .timeline-content::before {
    left: -10px;
    top: 20px;
    border-left-color: transparent;
    border-right-color: #fff;
  }

  .timeline-content::after {
    left: -20px;
    top: 20px;
  }

  .timeline-photo img {
    max-height: 260px;
  }

  .timeline-photos-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .timeline-photos-grid img {
    max-height: 150px;
  }

  .cert-grid-3,
  .cert-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .cert-item img {
    max-height: 150px;
  }

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

@media (max-width: 480px) {
  .header-inner {
    height: 52px;
  }
  .logo-text {
    font-size: 16px;
  }
  .logo-img {
    width: 34px;
    height: 34px;
  }
  .logo-sub {
    font-size: 11px;
  }
  .nav {
    top: 52px;
  }

  .hero {
    margin-top: 52px;
    padding: 50px 0 40px;
  }
  .hero h1 {
    font-size: 22px;
    letter-spacing: 1px;
  }
  .hero p {
    font-size: 15px;
  }
  .hero-badge {
    font-size: 12px;
    padding: 4px 16px;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }
  .service-group-title {
    font-size: 18px;
  }
  .service-card {
    padding: 20px 16px;
  }
  .service-card h3 {
    font-size: 15px;
  }
  .service-card p {
    font-size: 13px;
  }
  .product-brands {
    margin-top: 8px;
    padding-top: 8px;
    gap: 4px;
  }

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-number {
    font-size: 28px;
  }

  .cert-grid-3,
  .cert-grid-4 {
    grid-template-columns: 1fr 1fr;
  }

  .cert-item img {
    max-height: 120px;
  }

  .client-logos {
    gap: 12px;
  }
  .client-item {
    padding: 14px 18px;
    font-size: 13px;
  }

  .section {
    padding: 30px 0;
  }
  .section-title {
    font-size: 20px;
  }
  .section-subtitle {
    font-size: 13px;
    margin-bottom: 24px;
  }

  .container {
    padding: 0 14px;
  }

  .about-text h3 {
    font-size: 18px;
  }
  .service-card {
    padding: 18px 14px;
  }

  .contact-form {
    padding: 20px;
  }
  .footer {
    padding: 30px 16px;
  }
  .footer-links {
    flex-wrap: wrap;
    gap: 12px;
  }

  /* Timeline on smallest screens */
  .timeline::before {
    left: 40px;
  }
  .timeline-item {
    padding-left: 40px;
  }
  .timeline-year {
    font-size: 16px;
    padding-left: 30px;
  }
  .timeline-content::after {
    left: -20px;
    width: 14px;
    height: 14px;
  }
  .timeline-photo img {
    max-height: 200px;
  }
  .timeline-photos-grid {
    grid-template-columns: 1fr;
  }
  .timeline-photos-grid img {
    max-height: 200px;
  }

  /* ===== Solutions section mobile ===== */
  .solution-card {
    flex-direction: column;
  }
  .solution-img {
    min-height: 100px;
  }
  .solution-icon-bg {
    font-size: 36px;
  }

  /* ===== Brands section mobile ===== */
  .brand-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }
  .brand-item {
    padding: 14px 8px;
    font-size: 13px;
  }
  .brand-item.has-logo {
    padding: 10px 8px;
  }
  .brand-logo {
    height: 26px;
  }
  .brand-item.has-logo {
    min-height: 54px;
  }
}


/* =====================================================================
   SECTION: Solutions (解决方案)
   ===================================================================== */

.solutions-showcase {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.solution-card {
  display: flex;
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  border: 1px solid #eee;
  transition: all 0.3s;
}

.solution-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  transform: translateY(-3px);
  border-color: #2a5fa8;
}

.solution-img {
  width: 200px;
  min-width: 200px;
  background: linear-gradient(135deg, #e8eef6, #d4e0f0);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 160px;
}

.solution-icon-bg {
  font-size: 48px;
}

.solution-body {
  flex: 1;
  padding: 24px 28px;
}

.solution-body h3 {
  font-size: 18px;
  color: #1a3a6b;
  margin-bottom: 10px;
  font-weight: 700;
}

.solution-body p {
  font-size: 14px;
  color: #666;
  line-height: 1.7;
  margin-bottom: 14px;
}

.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.solution-tags span {
  display: inline-block;
  background: #f0f4fa;
  color: #2a5fa8;
  font-size: 12px;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid #d4e0f0;
}


/* =====================================================================
   Product inline brands (嵌入产品卡片的品牌图标)
   ===================================================================== */

.product-brands {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid #edf2f7;
  justify-content: center;
  align-items: center;
}

.product-brand-logo {
  height: 18px;
  width: auto;
  object-fit: contain;
  opacity: 0.7;
  transition: all 0.3s;
  vertical-align: middle;
}

.product-brands a:hover .product-brand-logo {
  opacity: 1;
  transform: scale(1.12);
}

.product-brand-text {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  color: #888;
  background: #f5f7fa;
  padding: 3px 8px;
  border-radius: 4px;
  transition: all 0.3s;
  line-height: 1.4;
}

.product-brands a:hover .product-brand-text {
  color: #1a3a6b;
  background: #e8eef6;
}


/* =====================================================================
   Solutions responsive
   ===================================================================== */

@media (max-width: 1024px) {
}

@media (max-width: 768px) {
  .solution-img {
    width: 160px;
    min-width: 160px;
    min-height: 130px;
  }
  .solution-icon-bg {
    font-size: 40px;
  }
  .solution-body {
    padding: 18px 20px;
  }
}

@media (max-width: 480px) {
  .solution-card {
    flex-direction: column;
  }
  .solution-img {
    width: 100%;
    min-width: auto;
    min-height: 80px;
  }
  .solution-icon-bg {
    font-size: 32px;
  }
  .solution-body {
    padding: 16px;
  }
  .solution-body h3 {
    font-size: 16px;
  }
}


/* =====================================================================
   Image Viewer (双击看大图)
   ===================================================================== */

.img-viewer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
  animation: viewerFadeIn 0.2s ease;
}

@keyframes viewerFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.img-viewer-wrapper {
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.img-viewer-image {
  max-width: 100%;
  max-height: 90vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
  image-rendering: auto;
}

/* Give hints that images are double-clickable */
.timeline-photo img,
.timeline-photos-grid img {
  cursor: zoom-in;
}


/* =====================================================================
   Culture / 企业文化（员工摄影作品）
   ===================================================================== */

.culture-work-grid-inline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
}

.culture-work-inline {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.culture-work-inline img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  cursor: zoom-in;
  transition: transform 0.4s;
}

.culture-work-inline:hover img {
  transform: scale(1.03);
}

.culture-inline-caption {
  margin-top: 12px;
}

.culture-inline-caption h3 {
  font-size: 18px;
  color: #1a3a6b;
  font-weight: 700;
  margin-bottom: 4px;
}

.culture-inline-author {
  font-size: 12px;
  color: #aaa;
}

/* 竹皮河的船 - 保持原卡片样式 */
.culture-work-card {
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid #eee;
  transition: all 0.3s;
}

.culture-work-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  border-color: #2a5fa8;
}

.culture-work-card-wide {
  display: flex;
  flex-direction: row;
}

.culture-work-card-wide .culture-photo {
  width: 50%;
  min-width: 50%;
}

.culture-work-card-wide .culture-caption {
  flex: 1;
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.culture-photo {
  overflow: hidden;
  background: #f0f2f5;
}

.culture-photo img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.4s;
  cursor: zoom-in;
}

.culture-work-card:hover .culture-photo img {
  transform: scale(1.05);
}

.culture-caption {
  padding: 20px 18px;
  text-align: center;
}

.culture-caption h3 {
  font-size: 18px;
  color: #1a3a6b;
  font-weight: 700;
  margin-bottom: 6px;
}

.culture-subtitle {
  font-size: 13px;
  color: #999;
  margin-bottom: 10px;
}

.culture-desc {
  font-size: 14px;
  color: #666;
  line-height: 1.8;
  margin-bottom: 12px;
  text-align: left;
}

.culture-author {
  font-size: 12px;
  color: #aaa;
  margin-top: 4px;
}

@media (max-width: 768px) {
  .culture-work-grid-inline {
    gap: 12px;
  }
  .culture-inline-caption h3 {
    font-size: 15px;
  }
  .culture-work-card-wide {
    flex-direction: column;
  }
  .culture-work-card-wide .culture-photo {
    width: 100%;
    min-width: auto;
  }
  .culture-work-card-wide .culture-caption {
    padding: 20px;
  }

  /* CEO致辞手机端竖屏 */
  .ceo-layout {
    flex-direction: column;
    min-height: auto;
  }
  .ceo-left {
    width: 100%;
    min-width: auto;
    max-height: 300px;
    overflow: hidden;
  }
  .ceo-right-top {
    padding: 20px 20px 0;
  }
  .ceo-photo-wrap {
    width: 80px;
    height: 80px;
  }
  .ceo-right-bottom .culture-article-body {
    padding: 16px 20px;
  }
  .culture-ceo-title {
    font-size: 22px;
  }
}

@media (max-width: 480px) {
  .culture-work-grid-inline {
    flex-direction: column;
    gap: 16px;
    max-width: 350px;
  }
  .culture-inline-caption h3 {
    font-size: 16px;
  }
  .culture-desc {
    font-size: 13px;
  }

  /* CEO致辞小屏 */
  .ceo-left {
    max-height: 220px;
  }
  .ceo-photo-wrap {
    width: 70px;
    height: 70px;
  }
  .ceo-right-bottom .culture-article-body {
    padding: 12px 16px;
  }
  .culture-ceo-title {
    font-size: 20px;
  }
}


/* =====================================================================
   Culture Articles / 企业文化文章
   ===================================================================== */

.culture-article-card-ceo {
  border: 2px solid #1a3a6b;
  position: relative;
}

.culture-article-card-ceo::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 8px;
  right: 8px;
  bottom: 8px;
  border: 1px solid #e0e7f0;
  border-radius: 10px;
  pointer-events: none;
}

.culture-ceo-label {
  text-align: center;
  font-size: 13px;
  color: #2a5fa8;
  letter-spacing: 4px;
  margin-bottom: 12px;
  text-indent: 0 !important;
}

.culture-ceo-title {
  text-align: center;
  font-size: 26px;
  font-weight: 700;
  color: #1a3a6b;
  margin-bottom: 6px;
}

.culture-ceo-author {
  text-align: center;
  font-size: 14px;
  color: #999;
  margin-bottom: 20px;
  text-indent: 0 !important;
}

.ceo-layout {
  display: flex;
  flex-direction: row;
  min-height: 500px;
}

.ceo-left {
  width: 45%;
  min-width: 45%;
  display: flex;
  align-items: stretch;
}

.ceo-left img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ceo-right {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.ceo-right-top {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 30px 30px 0;
}

.ceo-photo-wrap {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid #2a5fa8;
  box-shadow: 0 4px 14px rgba(42, 95, 168, 0.2);
}

.ceo-photo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ceo-right-bottom {
  flex: 1;
  display: flex;
  align-items: center;
}

.ceo-right-bottom .culture-article-body {
  padding: 24px 30px;
  width: 100%;
}

.culture-article-wrap {
  max-width: 900px;
  margin: 0 auto;
}

.culture-article-section-title {
  text-align: center;
  font-size: 26px;
  font-weight: 700;
  color: #1a3a6b;
  margin-bottom: 8px;
}

.culture-article-section-meta {
  text-align: center;
  font-size: 14px;
  color: #999;
  margin-bottom: 30px;
}

.culture-article-card {
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid #eee;
  transition: all 0.3s;
}

.culture-article-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  border-color: #2a5fa8;
}

.culture-article-photo {
  background: #f0f2f5;
  overflow: hidden;
  max-height: 300px;
}

.culture-article-photo img {
  width: 100%;
  height: auto;
  display: block;
}

.culture-article-body {
  padding: 36px 40px;
}

.culture-article-body p {
  font-size: 15px;
  color: #444;
  line-height: 2;
  margin-bottom: 18px;
  text-indent: 2em;
}

.culture-article-body p:last-child {
  margin-bottom: 0;
}

.culture-article-card-narrow {
  max-width: 700px;
  margin: 0 auto;
}

.culture-article-card-narrow .culture-article-body p {
  text-indent: 0;
  text-align: center;
  line-height: 2.2;
}

.culture-article-card-narrow .culture-article-body p:first-child {
  text-indent: 2em;
  text-align: left;
}

/* 品牌故事配图 */
.culture-article-card:has(.brand-top-banner) {
  padding: 0;
  overflow: hidden;
}

.brand-top-banner {
  width: 100%;
}

.brand-top-banner img {
  width: 100%;
  height: auto;
  display: block;
}

.brand-story-layout {
  border: 1px solid #eef0f4;
  border-radius: 0 0 12px 12px;
  overflow: hidden;
}

.brand-row-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.brand-row-2col + .brand-row-2col {
  border-top: 1px solid #eef0f4;
}

.brand-col {
  padding: 24px 20px;
  font-size: 14px;
  line-height: 1.9;
  color: #444;
}

.brand-col + .brand-col {
  border-left: 1px solid #eef0f4;
}

.brand-col-photo {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fafbfc;
}

.brand-col-photo img {
  max-width: 90%;
  height: auto;
  display: block;
  border-radius: 10px;
}

.brand-col-text p {
  margin-bottom: 10px;
  text-indent: 2em;
  font-size: 15px;
  line-height: 2;
  color: #444;
}

/* 行3右侧：小图在上+文章在下 */
.brand-col-right-stacked {
  padding: 0;
  display: flex;
  flex-direction: column;
}

.brand-col-right-stacked .brand-right-photo {
  flex: 0 0 auto;
}

.brand-col-right-stacked .brand-right-text {
  flex: 1 1 auto;
}

.brand-right-photo {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fafbfc;
  padding: 16px 12px;
  border-bottom: 1px solid #eef0f4;
}

.brand-right-photo img {
  max-width: 100%;
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

.brand-right-text {
  padding: 20px 20px;
  font-size: 14px;
  line-height: 1.9;
  color: #444;
  flex: 1;
}

.brand-right-text p {
  margin-bottom: 10px;
  text-indent: 2em;
  font-size: 15px;
  line-height: 2;
  color: #444;
}

@media (max-width: 768px) {
  .brand-row-2col {
    grid-template-columns: 1fr 1fr;
  }
  .brand-col {
    padding: 16px 14px;
  }
  .brand-col-text p {
    font-size: 13px;
    line-height: 1.8;
  }
  .brand-col-photo img {
    max-width: 90%;
  }
  .brand-right-photo img {
    width: 100%;
    max-width: 100%;
  }
  .brand-right-text {
    padding: 16px 14px;
  }
}

@media (max-width: 768px) {
  .culture-article-body {
    padding: 24px;
  }
  .culture-article-body p {
    font-size: 14px;
  }
  .culture-article-section-title {
    font-size: 22px;
  }
}

@media (max-width: 480px) {
  .culture-article-body {
    padding: 20px 16px;
  }
  .culture-article-body p {
    font-size: 13px;
    line-height: 1.9;
  }
  .culture-article-section-title {
    font-size: 20px;
  }
  .brand-row-2col {
    grid-template-columns: 1fr;
  }
  .brand-col {
    padding: 14px 14px;
    border-left: none !important;
  }
  .brand-col + .brand-col {
    border-top: 1px solid #eef0f4;
    border-left: none;
  }
  .brand-col-text p {
    font-size: 13px;
    line-height: 1.8;
  }
  .brand-col-photo img {
    max-width: 70%;
  }
  .brand-col h4 {
    font-size: 14px !important;
  }
  .brand-right-stacked {
    flex-direction: column;
  }
  .brand-right-photo img {
    width: 100%;
    max-width: 100%;
  }
  .brand-right-text {
    padding: 14px 14px;
  }
  .brand-right-text p {
    font-size: 13px;
    line-height: 1.8;
  }
}

/* 企业文化文章配图 */
.culture-article-banner {
  text-align: center;
  padding: 20px;
}

.culture-young-heart-img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.culture-article-card-has-banner {
  flex-direction: column;
}

@media (max-width: 768px) {
  .culture-article-banner {
    padding: 10px;
  }
  .culture-young-heart-img {
    max-width: 100%;
  }
}