.w120 {
  width: 1400px;
  margin: 0 auto;
}
@font-face {
  font-family: Source Han Sans CN;
  src: url(../font/SourceHanSansCN-Regular.ttf);
}
.wrapper {
  width: 100%;
  background-color: #fff;
}
.wrapper .navbar {
  width: 100%;
  height: 65px;
  box-shadow: 0px 1px 5px 0px rgba(87, 87, 87, 0.18);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  background-color: #fff;
}
.wrapper .navbar .nav-content {
  display: flex;
  height: 100%;
  align-items: center;
}
.wrapper .navbar .nav-content .logo {
  height: 70%;
}
.wrapper .navbar .nav-content .logo img {
  height: 100%;
}
.wrapper .navbar .nav-content .nav-list {
  display: flex;
  align-items: center;
  height: 100%;
  margin-left: 20%;
}
.wrapper .navbar .nav-content .nav-list li {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
  margin-right: 42px;
}

.wrapper .navbar .nav-content .nav-list .active::after {
  position: absolute;
  content: "";
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: #0052d9;
}
.wrapper .navbar .nav-content .nav-list .active a {
  color: #0052d9;
}
.wrapper .navbar .nav-content .nav-list li a {
  font-size: 18px;
  font-weight: 600;
}
.wrapper .navbar .download {
  background: #0052d9;
  width: 120px;
  height: 65px;
  line-height: 65px;
  text-align: center;
  color: #fff;
  position: absolute;
  right: 0;
  top: 0;
  font-weight: 600;
  font-size: 20px;
}

/* Hero — centered intro */
.about-hero {
  padding: 180px 0 72px;
  background: #fff;
}
.about-hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 920px;
}
.about-hero-title {
  font-size: 40px;
  font-weight: 700;
  color: #313131;
  line-height: 1.3;
  margin-bottom: 16px;
}
.about-hero-subtitle {
  font-size: 46px;
  font-weight: 700;
  color: #313131;
  margin-bottom: 40px;
}
.about-hero-photo {
  width: 100%;
  max-width: 860px;
  padding: 4px;

  margin-bottom: 36px;
  background: #fff;
}
.about-hero-photo img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}
.about-hero-desc {
  font-size: 26px;
  line-height: 1.85;
  color: #515151;

  margin-bottom: 32px;
}
.about-hero-btn {
  display: inline-block;
  padding: 12px 40px;
  background: linear-gradient(90deg, #015aeb 0%, #4a8dff 100%);

  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 2px;
  transition: background 0.2s ease;
}
.about-hero-btn:hover {
  background: linear-gradient(90deg, #015aeb 0%, #015aeb 100%);
}

/* Story — two columns */
.about-story {
  padding: 100px 0 96px;
  background: #f8fafc;
}
.about-story-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 64px;
}
.about-story-text {
  flex: 1;
  max-width: 640px;
}
.about-story-title {
  font-size: 46px;
  font-weight: 700;
  color: #313131;
  line-height: 1.35;
  margin-bottom: 32px;
}
.about-story-text p {
  font-size: 20px;
  line-height: 1.9;
  color: #515151;
  margin-bottom: 20px;
}
.about-story-text p:last-child {
  margin-bottom: 0;
}
.about-story-visual {
  flex: 0 0 620px;
  margin: 0;
}
.about-story-visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
}
.about-story-visual figcaption {
  margin-top: 16px;
  text-align: center;
  font-size: 14px;
  color: #6b7280;
}

.about-section-head {
  text-align: center;
  margin-bottom: 56px;
}
.about-section-title {
  font-size: 36px;
  font-weight: 700;
  color: #313131;
  line-height: 1.35;
  margin-bottom: 16px;
}
.about-section-subtitle {
  font-size: 36px;
  line-height: 1.6;
  color: #3a3a3a;
  font-weight: 400;
}

/* Four business segments */
.about-segments {
  padding: 88px 0 96px;
  background: linear-gradient(170.77deg, #fcfefe 6.99%, #eff5fe 93.01%);
}
.about-segments-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch;
}
.about-segment-card {
  background: #fff;
  border-radius: 4px;
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  padding: 0 0 28px;
  display: flex;
  flex-direction: column;
}
.about-segment-card__media {
  height: 300px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-segment-card__media img {
  display: block;
  max-width: 100%;
  height: auto;
  max-height: 220px;
  object-fit: contain;
}
.about-segment-card__title {
  font-size: 28px;
  font-weight: 700;
  color: #505050;
  margin: 12px 20px 14px;
  line-height: 1.4;
}
.about-segment-card__desc {
  font-size: 20px;
  line-height: 1.75;
  color: #505050;
  margin: 0 20px;
  flex: 1;
}

/* Core team */
.about-team {
  padding: 88px 0 120px;
  background: linear-gradient(170.77deg, #fff 6.99%, #ecf6ff 93.01%);
}
.about-team-inner {
  overflow: hidden;
}

.about-team-card {
  padding: 30px 30px;
  display: flex;
  width: 80%;
  /* height: 200px; */
  margin: 0 auto;
  background: #fff;
  margin-bottom: 36px;
}

.about-team-card__avatar {
  height: 200px;
}

.about-team-card__text {
  padding-left: 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.about-team-card__name {
  font-size: 28px;
  font-weight: 500;
  color: #262626;
  margin-bottom: 10px;
}
.about-team-card__org {
  font-size: 20px;
  line-height: 1.5;
  color: #262626;
  margin: 0;
}
.about-team-card__role {
  font-size: 19px;
  line-height: 1.5;
  color: #4b4b4b;
  margin: 0;
}

.about-team-card__org {
  margin-bottom: 4px;
}

@media (max-width: 1440px) {
  .w120 {
    width: calc(100% - 48px);
  }
}

@media (max-width: 1024px) {
  .about-story-inner {
    flex-direction: column;
    gap: 40px;
  }
  .about-story-visual {
    flex: none;
    width: 100%;
    max-width: 620px;
  }
  .about-story-text {
    max-width: none;
  }
  .about-segments-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-team-track {
    justify-content: flex-start;
    overflow-x: auto;
    mask-image: none;
    -webkit-mask-image: none;
    padding: 0 4px 12px;
  }
}

@media (max-width: 768px) {
  .about-hero {
    padding-top: 100px;
  }
  .about-hero-title {
    font-size: 28px;
  }
  .about-hero-subtitle {
    font-size: 18px;
  }
  .about-story-title {
    font-size: 28px;
  }

  .about-segments-grid {
    grid-template-columns: 1fr;
  }
  .about-team-card {
    flex-direction: column;
    height: auto;
    align-items: center;
  }

  .about-team-card__text {
    padding: 24px;
    align-items: center;
  }
  .about-team-card__avatar {
    height: 200px;
  }
}