.page-about {
  background: var(--deep);
  color: var(--text);
  overflow-x: hidden;
}

/* 面包屑 */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 20px 0 8px;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}
.page-about .breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}
.page-about .breadcrumb a:hover {
  color: var(--gold);
}

/* 英雄区 */
.page-about .about-hero {
  position: relative;
  padding: 28px 0 56px;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 42vw;
  height: 6px;
  background: linear-gradient(90deg, var(--orange), var(--gold));
  opacity: 0.85;
}
.page-about .about-hero__grid {
  display: grid;
  gap: 40px;
  align-items: center;
}
.page-about .about-hero__content {
  position: relative;
  z-index: 1;
}
.page-about .about-hero h1 {
  margin: 12px 0 18px;
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.15;
  font-weight: 700;
}
.page-about .about-hero__lead {
  max-width: 600px;
  margin-bottom: 28px;
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.7;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}
.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}
.page-about .about-hero__stat dt {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}
.page-about .about-hero__stat dd {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
.page-about .about-hero__media {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
}

/* 品牌理念 */
.page-about .about-mission {
  padding: 24px 0 56px;
}
.page-about .about-mission__card {
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  border-radius: 8px;
  padding: 32px 24px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--deep) 90%);
  position: relative;
  overflow: hidden;
}
.page-about .about-mission__card::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(242,193,78,0.12) 0%, transparent 70%);
}
.page-about .about-mission__kicker {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-about .about-mission h2 {
  margin-bottom: 16px;
  font-size: 26px;
  line-height: 1.3;
}
.page-about .about-mission p {
  max-width: 720px;
  color: var(--text-dim);
  line-height: 1.7;
}
.page-about .about-mission__points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}
.page-about .about-mission__points li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-size: 14px;
}

/* 时间轴 */
.page-about .about-timeline {
  position: relative;
  padding: 56px 0 64px;
  background: var(--deep-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.page-about .about-timeline h2 {
  margin: 8px 0 12px;
  font-size: 28px;
}
.page-about .about-timeline .section-sub {
  max-width: 700px;
}
.page-about .about-timeline__svg {
  width: 100%;
  height: auto;
  margin: 32px 0 16px;
}
.page-about .about-timeline__list {
  position: relative;
  margin-top: 24px;
  display: grid;
  gap: 32px;
}
.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 22px;
  bottom: 22px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange) 0%, rgba(255,255,255,0.18) 100%);
}
.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 20px;
}
.page-about .about-timeline__marker {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--deep);
  border: 2px solid var(--orange);
  color: var(--orange);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  box-shadow: 0 0 0 4px rgba(255,107,53,0.12);
}
.page-about .about-timeline__card {
  background: var(--navy);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 20px 18px;
  position: relative;
}
.page-about .about-timeline__year {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.2;
}
.page-about .about-timeline__card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.4;
}
.page-about .about-timeline__card p {
  margin: 0 0 12px;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.65;
}
.page-about .about-timeline__image {
  margin-top: 36px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.page-about .about-timeline__image img {
  display: block;
  width: 100%;
  height: auto;
}

/* 数据能力 */
.page-about .about-data {
  padding: 56px 0 64px;
  background: var(--light);
  color: var(--deep);
}
.page-about .about-data__kicker {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
}
.page-about .about-data h2 {
  margin: 0 0 20px;
  font-size: 28px;
  line-height: 1.25;
  color: var(--deep);
}
.page-about .about-data__intro {
  max-width: 640px;
  color: rgba(11,29,58,0.72);
  line-height: 1.7;
  font-size: 15px;
  margin-bottom: 28px;
}
.page-about .about-data__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}
.page-about .about-data__image {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(11,29,58,0.1);
  box-shadow: 0 16px 40px rgba(11,29,58,0.12);
}
.page-about .about-data__image img {
  display: block;
  width: 100%;
  height: auto;
}
.page-about .about-data__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.page-about .about-data__stat {
  background: #fff;
  border: 1px solid rgba(11,29,58,0.1);
  border-radius: 8px;
  padding: 20px 18px 14px;
  display: flex;
  flex-direction: column;
  min-height: 150px;
}
.page-about .about-data__num {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
  display: block;
  margin-bottom: 10px;
}
.page-about .about-data__stat h3 {
  margin: 0 0 6px;
  font-size: 16px;
  line-height: 1.35;
  color: var(--deep);
}
.page-about .about-data__stat p {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(11,29,58,0.6);
}
.page-about .about-data__tick {
  display: block;
  height: 4px;
  width: 100%;
  margin-top: auto;
  background: rgba(11,29,58,0.08);
  border-radius: 99px;
  overflow: hidden;
}
.page-about .about-data__tick-inner {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--orange), var(--gold));
  border-radius: 99px;
}
.page-about .about-data__tick-1 { width: 92%; }
.page-about .about-data__tick-2 { width: 78%; }
.page-about .about-data__tick-3 { width: 62%; }
.page-about .about-data__tick-4 { width: 46%; }

/* 团队与运营 */
.page-about .about-team {
  padding: 56px 0 64px;
}
.page-about .about-team__grid {
  display: grid;
  gap: 36px;
}
.page-about .about-team h2 {
  margin: 8px 0 16px;
  font-size: 28px;
}
.page-about .about-team__content > p {
  max-width: 620px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 24px;
}
.page-about .about-team__features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}
.page-about .about-team__features li {
  position: relative;
  padding-left: 20px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}
.page-about .about-team__features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  background: var(--orange);
  border-radius: 2px;
  transform: rotate(45deg);
}
.page-about .about-team__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.page-about .about-team__stat {
  background: var(--navy);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.page-about .about-team__stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.page-about .about-team__num {
  font-family: var(--font-display);
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}
.page-about .about-team__label {
  font-size: 14px;
  color: var(--text-dim);
}

/* 资质与合作 */
.page-about .about-credential {
  padding: 56px 0 64px;
  background: var(--deep-2);
  border-top: 1px solid var(--border);
}
.page-about .about-credential h2 {
  margin: 8px 0 28px;
  font-size: 28px;
}
.page-about .about-credential__grid {
  display: grid;
  gap: 16px;
}
.page-about .about-credential__card {
  background: var(--deep);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px 22px;
  position: relative;
  overflow: hidden;
}
.page-about .about-credential__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--orange);
  opacity: 0.7;
}
.page-about .about-credential__index {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--gold);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 8px;
}
.page-about .about-credential__card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.4;
}
.page-about .about-credential__card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.65;
}

/* CTA */
.page-about .about-cta {
  padding: 56px 0 72px;
}
.page-about .about-cta__box {
  text-align: center;
  border: 1px solid var(--border);
  border-top: 3px solid var(--orange);
  border-radius: 10px;
  padding: 40px 24px;
  background:
    radial-gradient(circle at 15% 20%, rgba(255,107,53,0.16), transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(242,193,78,0.12), transparent 40%),
    var(--deep);
}
.page-about .about-cta__kicker {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-about .about-cta h2 {
  margin: 0 0 14px;
  font-size: 28px;
}
.page-about .about-cta__box > p {
  max-width: 520px;
  margin: 0 auto 28px;
  color: var(--text-dim);
  line-height: 1.7;
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

/* 响应式图片 */
.page-about .about-hero__media img,
.page-about .about-timeline__image img,
.page-about .about-data__image img {
  max-width: 100%;
  height: auto;
}

/* 断点：平板 */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding-top: 40px;
  }
  .page-about .about-hero__stats {
    gap: 24px;
  }
  .page-about .about-timeline__list {
    gap: 40px;
  }
  .page-about .about-timeline__item {
    grid-template-columns: 56px 1fr;
    gap: 28px;
  }
  .page-about .about-data__stats {
    gap: 20px;
  }
  .page-about .about-team__grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
  .page-about .about-credential__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
  .page-about .about-cta__actions {
    gap: 16px;
  }
}

/* 断点：桌面 */
@media (min-width: 1024px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }
  .page-about .about-hero {
    padding: 56px 0 72px;
  }
  .page-about .about-mission__card {
    padding: 40px 48px;
  }
  .page-about .about-mission h2 {
    font-size: 32px;
  }
  .page-about .about-timeline {
    padding: 72px 0 80px;
  }
  .page-about .about-timeline h2 {
    font-size: 32px;
  }
  .page-about .about-timeline__item {
    grid-template-columns: 64px minmax(0, 640px);
  }
  .page-about .about-timeline__marker {
    width: 56px;
    height: 56px;
    font-size: 14px;
  }
  .page-about .about-timeline__list::before {
    left: 27px;
    top: 28px;
    bottom: 28px;
  }
  .page-about .about-timeline__image {
    margin-top: 44px;
  }
  .page-about .about-data {
    padding: 72px 0 80px;
  }
  .page-about .about-data h2 {
    font-size: 32px;
  }
  .page-about .about-data__header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 32px;
    margin-bottom: 32px;
  }
  .page-about .about-data__intro {
    margin-bottom: 0;
    text-align: right;
  }
  .page-about .about-data__grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }
  .page-about .about-team {
    padding: 72px 0 80px;
  }
  .page-about .about-team h2 {
    font-size: 32px;
  }
  .page-about .about-team__grid {
    grid-template-columns: 5fr 7fr;
    gap: 56px;
  }
  .page-about .about-credential {
    padding: 72px 0 80px;
  }
  .page-about .about-credential h2 {
    font-size: 32px;
  }
  .page-about .about-credential__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-cta {
    padding: 64px 0 88px;
  }
  .page-about .about-cta h2 {
    font-size: 32px;
  }
}