/* About - 完全按照效果图 */
/* Banner - 和service一模一样 */
.about-hero-banner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
  background: #152b3f;
  overflow: hidden;
}

.about-hero-banner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .7;
  filter: saturate(.75) brightness(.6);
}

.about-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 25, 35, .3) 0%, rgba(15, 25, 35, .15) 100%);
}

.about-hero-banner h1 {
  position: relative;
  z-index: 2;
  color: #fff;
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 600;
  letter-spacing: .04em;
}

/* Section */
.about-section {
  padding: 100px 0;
}

.about-section .section-shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 36px;
}

/* Label */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}

.section-label::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(0, 167, 181, .1);
}

/* Title */
.section-title {
  margin: 14px 0 0;
  font-size: clamp(32px, 3.8vw, 52px);
  line-height: 1.22;
  font-weight: 600;
  color: #292929;
  letter-spacing: 0;
}

/* About intro - 左图右文 */
.about-intro {
  background: #fff;
}

.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-intro-visual {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  min-height: 400px;
}

.about-intro-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 400px;
}

.about-intro-content h2 {
  margin: 14px 0 0;
  font-size: clamp(32px, 3.8vw, 52px);
  line-height: 1.22;
  font-weight: 600;
  color: #292929;
  letter-spacing: 0;
}

.about-intro-content p {
  margin-top: 24px;
  color: #666;
  font-size: 15px;
  line-height: 1.8;
}

/* Explore */
.about-explore {
  background: #f4f7fb;
}

.explore-banner {
  position: relative;
  min-height: 400px;
  border-radius: 12px;
  overflow: hidden;
  margin-top: 40px;
}

.explore-banner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.explore-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15, 33, 49, .78) 0%, rgba(15, 33, 49, .26) 60%, transparent 100%);
}

.explore-content {
  position: relative;
  z-index: 2;
  padding: 60px;
  color: #fff;
  max-width: 500px;
}

.explore-content h3 {
  margin: 0 0 16px;
  font-size: 32px;
  font-weight: 600;
  line-height: 1.3;
}

.explore-content p {
  margin: 0 0 28px;
  color: #c8d6e0;
  font-size: 16px;
}

.explore-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: 1px solid rgba(255, 255, 255, .4);
  border-radius: 999px;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: all .25s;
}

.explore-btn:hover {
  background: rgba(255, 255, 255, .15);
  border-color: rgba(255, 255, 255, .7);
}

/* Vision */
.about-vision {
  background: #fff;
}

.vision-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 44px;
}

.vision-card {
  padding: 40px 32px;
  border: 1px solid #e7e5e1;
  border-radius: 12px;
  background: #fff;
  transition: transform .3s ease, box-shadow .3s ease;
}

.vision-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 50px rgba(25, 49, 78, .08);
}

.vision-icon {
  display: inline-flex;
  width: 60px;
  height: 60px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #e6f4f6;
  color: var(--cyan);
  margin-bottom: 24px;
}

.vision-card h3 {
  margin: 0 0 16px;
  font-size: 20px;
  font-weight: 600;
  color: #252a30;
}

.vision-cn {
  margin: 0;
  color: #333;
  font-size: 15px;
  line-height: 1.7;
}

.vision-en {
  margin: 8px 0 0;
  color: #77746e;
  font-size: 12px;
  font-style: italic;
}

/* R&D */
.about-rd {
  background: #f4f7fb;
}

.rd-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 44px;
}

.rd-card {
  padding: 40px 28px;
  border: 1px solid #e7e5e1;
  border-radius: 12px;
  background: #fff;
  text-align: center;
  transition: transform .3s ease, box-shadow .3s ease;
}

.rd-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 50px rgba(25, 49, 78, .08);
}

.rd-icon {
  display: inline-flex;
  width: 50px;
  height: 50px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: #e6f4f6;
  color: var(--cyan);
  margin-bottom: 20px;
}

.rd-value {
  margin-bottom: 8px;
  color: #252a30;
  font-size: 36px;
  font-weight: 700;
  line-height: 1.2;
}

.rd-desc {
  color: #77746e;
  font-size: 13px;
  line-height: 1.6;
}

/* Business */
.about-business {
  background: #fff;
}

.business-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 44px;
}

.business-card {
  padding: 40px 32px;
  border: 1px solid #e7e5e1;
  border-radius: 12px;
  background: #fff;
  transition: transform .3s ease, box-shadow .3s ease;
}

.business-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 50px rgba(25, 49, 78, .08);
}

.business-card h3 {
  margin: 0 0 20px;
  font-size: 22px;
  font-weight: 600;
  color: #252a30;
  line-height: 1.4;
}

.business-card p {
  margin: 0;
  color: #77746e;
  font-size: 14px;
  line-height: 1.8;
}

/* Global */
.about-global {
  background: #f4f7fb;
}

.global-banner {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
  min-height: 200px;
  margin-top: 40px;
  padding: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, #1a3a4a 0%, #2a4a5a 100%);
  color: #fff;
  overflow: hidden;
}

.global-info {
  display: flex;
  align-items: center;
  gap: 20px;
}

.global-number {
  font-size: 72px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}

.global-label {
  color: #c8d6e0;
  font-size: 16px;
  line-height: 1.5;
}

.global-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--cyan);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

.global-map {
  display: flex;
  align-items: center;
  justify-content: center;
}

.global-map img {
  max-width: 100%;
  height: auto;
  opacity: .8;
}

.global-text {
  margin-top: 36px;
}

.global-text p {
  margin: 12px 0;
  color: #666;
  font-size: 14px;
  line-height: 1.8;
}

/* Responsive */
@media (max-width: 1024px) {
  .about-intro-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .about-intro-visual {
    order: -1;
  }

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

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

  .global-banner {
    grid-template-columns: 1fr;
  }

  .global-number {
    font-size: 56px;
  }
}

@media (max-width: 768px) {
  .about-hero-banner {
    min-height: 260px;
  }

  .about-hero-banner h1 {
    font-size: 28px;
    letter-spacing: 0.02em;
  }

  .about-section {
    padding: 50px 0;
  }

  .about-section .section-shell {
    padding: 0 16px;
  }

  .section-label {
    font-size: 12px;
  }

  .section-title {
    font-size: 24px;
    line-height: 1.3;
  }

  .about-intro-grid {
    gap: 30px;
  }

  .about-intro-visual {
    min-height: 220px;
  }

  .about-intro-visual img {
    min-height: 220px;
  }

  .about-intro-content h2 {
    font-size: 22px;
  }

  .about-intro-content p {
    font-size: 14px;
    line-height: 1.7;
  }

  .explore-banner {
    min-height: 260px;
    margin-top: 24px;
    border-radius: 8px;
  }

  .explore-content {
    padding: 24px 20px;
  }

  .explore-content h3 {
    font-size: 22px;
    margin-bottom: 12px;
  }

  .explore-content p {
    font-size: 13px;
    margin-bottom: 16px;
    color: #c8d6e0;
  }

  .explore-btn {
    padding: 10px 20px;
    font-size: 13px;
    border-radius: 8px;
  }

  .vision-row,
  .rd-grid,
  .business-row {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-top: 24px;
  }

  .vision-card,
  .rd-card,
  .business-card {
    padding: 24px 18px;
    border-radius: 8px;
  }

  .vision-icon {
    width: 44px;
    height: 44px;
    margin-bottom: 16px;
  }

  .vision-card h3 {
    font-size: 17px;
    margin-bottom: 12px;
  }

  .vision-cn {
    font-size: 13px;
    line-height: 1.6;
  }

  .vision-en {
    font-size: 11px;
  }

  .rd-icon {
    width: 42px;
    height: 42px;
    margin-bottom: 14px;
  }

  .rd-value {
    font-size: 28px;
    margin-bottom: 6px;
  }

  .rd-desc {
    font-size: 12px;
    line-height: 1.5;
  }

  .business-card h3 {
    font-size: 17px;
    margin-bottom: 14px;
  }

  .business-card p {
    font-size: 13px;
    line-height: 1.7;
  }

  .global-banner {
    padding: 24px 18px;
    margin-top: 20px;
    border-radius: 8px;
  }

  .global-info {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .global-number {
    font-size: 42px;
  }

  .global-label {
    font-size: 13px;
    line-height: 1.4;
  }

  .global-badge {
    font-size: 12px;
    padding: 3px 10px;
  }

  .global-text {
    margin-top: 16px;
  }

  .global-text p {
    font-size: 13px;
    line-height: 1.7;
  }
}

@media (max-width: 480px) {
  .about-hero-banner {
    min-height: 220px;
  }

  .about-hero-banner h1 {
    font-size: 24px;
  }

  .section-title {
    font-size: 20px;
  }

  .about-intro-content h2 {
    font-size: 20px;
  }

  .explore-content h3 {
    font-size: 18px;
  }

  .global-number {
    font-size: 36px;
  }
}