.page-about {
  --about-orange: #FF4D00;
  --about-blue: #00C2FF;
  --about-dark: #0A0E13;
  --about-dark-2: #131C27;
  --about-light: #F2F4F7;
  --about-white: #FFFFFF;
  --about-grey: #6B7A8A;
  --about-border: #D9E1E8;
  --about-green: #00D26A;
  --about-yellow: #FFD100;
  font-family: var(--font-body);
  color: var(--text-dark);
  background: var(--white-100);
  overflow-x: hidden;
}

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

/* ===== 品牌叙事 Hero ===== */
.page-about .about-hero {
  position: relative;
  padding: 30px 16px 58px;
  background: var(--black-900);
  color: var(--white-100);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, rgba(255, 77, 0, 0.07) 0 2px, transparent 2px 14px);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: '';
  position: absolute;
  right: -90px;
  top: 12%;
  width: 240px;
  height: 240px;
  background: var(--orange-500);
  transform: rotate(18deg);
  opacity: 0.8;
  border-radius: 20px;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  gap: 34px;
  align-items: center;
}

.page-about .about-hero__content {
  position: relative;
  z-index: 2;
}

.page-about .breadcrumb {
  margin-bottom: 18px;
}

.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

.page-about .breadcrumb a {
  color: var(--blue-500);
  text-decoration: none;
  transition: color var(--ease);
}

.page-about .breadcrumb a:hover {
  color: var(--orange-300);
}

.page-about .about-hero__kicker {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--orange-300);
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-about .about-hero__title {
  font-family: var(--font-heading);
  font-size: 34px;
  line-height: 1.18;
  font-weight: 800;
  color: var(--white-100);
  margin: 0 0 16px;
}

.page-about .about-hero__lead {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 244, 247, 0.88);
  margin: 0 0 24px;
  max-width: 58ch;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-about .about-hero__meta .btn {
  margin-left: 4px;
}

.page-about .about-inpage {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.page-about .about-inpage a {
  font-size: 13px;
  color: var(--white-100);
  text-decoration: none;
  padding: 7px 14px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  transition: border-color var(--ease), background var(--ease), color var(--ease);
}

.page-about .about-inpage a:hover {
  border-color: var(--orange-500);
  background: rgba(255, 77, 0, 0.16);
  color: #fff;
}

.page-about .about-hero__visual {
  position: relative;
  z-index: 2;
}

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
}

.page-about .about-hero__figure img {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 22px 46px rgba(0, 0, 0, 0.45);
  display: block;
}

.page-about .about-hero__figure figcaption {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
  margin-top: 10px;
  text-align: right;
  letter-spacing: 0.04em;
}

.page-about .about-hero__vlabel {
  display: block;
  writing-mode: vertical-rl;
  font-size: 10px;
  letter-spacing: 0.28em;
  color: rgba(255, 255, 255, 0.42);
  position: absolute;
  right: -14px;
  bottom: 10px;
  font-weight: 700;
}

/* ===== 数据速览条 ===== */
.page-about .about-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.page-about .about-strip__item {
  background: var(--white-100);
  padding: 22px 14px;
  text-align: center;
}

.page-about .about-strip__item strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 800;
  color: var(--orange-500);
  line-height: 1.1;
}

.page-about .about-strip__item span {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ===== 章节通用 kicker ===== */
.page-about .about-section-kicker {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange-500);
  text-transform: uppercase;
  margin-bottom: 10px;
  font-weight: 700;
}

/* ===== 发展历程 ===== */
.page-about .about-journey {
  background: var(--white-100);
  padding: 56px 16px;
}

.page-about .about-journey__inner {
  max-width: 920px;
  margin: 0 auto;
}

.page-about .about-journey__title {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.25;
  font-size: 28px;
  margin: 0 0 12px;
}

.page-about .about-journey__intro {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  margin: 0 0 40px;
}

.page-about .about-timeline {
  position: relative;
  margin-left: 26px;
}

.page-about .about-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 3px;
  background: linear-gradient(to bottom, var(--orange-500), var(--blue-500));
  border-radius: 2px;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 34px;
  margin-bottom: 42px;
}

.page-about .about-timeline__item::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 7px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--orange-500);
  border: 3px solid var(--white-100);
  box-shadow: 0 0 0 2px var(--orange-500);
}

.page-about .about-timeline__year {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 800;
  color: var(--orange-500);
  background: rgba(255, 77, 0, 0.1);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.page-about .about-timeline__card {
  background: var(--about-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--ease), transform var(--ease);
}

.page-about .about-timeline__card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.page-about .about-timeline__card h3 {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text-dark);
}

.page-about .about-timeline__card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
  margin: 0 0 12px;
}

.page-about .about-timeline__card--current {
  border-color: var(--orange-500);
  background: linear-gradient(140deg, #FFF7F2, var(--about-white));
}

.page-about .about-timeline__link {
  font-size: 13px;
  font-weight: 700;
  color: var(--orange-500);
  text-decoration: none;
  transition: color var(--ease);
}

.page-about .about-timeline__link:hover {
  color: var(--orange-300);
}

/* ===== 数据能力 ===== */
.page-about .about-capability {
  background: linear-gradient(150deg, var(--about-dark) 0%, var(--about-dark-2) 70%, #1D2A38 100%);
  color: var(--white-100);
  padding: 62px 16px 66px;
}

.page-about .about-capability__inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.page-about .about-capability__title {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.25;
  font-size: 28px;
  color: var(--white-100);
  margin: 0 0 12px;
}

.page-about .about-capability__desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 244, 247, 0.82);
  margin: 0;
  max-width: 64ch;
}

.page-about .about-capability__grid {
  display: grid;
  gap: 26px;
  margin-top: 40px;
}

.page-about .about-metric__num {
  display: block;
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: 800;
  color: var(--white-100);
  line-height: 1.1;
  margin-bottom: 4px;
}

.page-about .about-metric__name {
  font-size: 13px;
  color: rgba(242, 244, 247, 0.7);
}

.page-about .about-metric__bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  margin-top: 12px;
  overflow: hidden;
}

.page-about .about-metric__fill {
  display: block;
  height: 100%;
  border-radius: inherit;
}

.page-about .about-metric__fill--orange { background: var(--orange-500); }
.page-about .about-metric__fill--blue { background: var(--blue-500); }
.page-about .about-metric__fill--green { background: var(--green-400); }
.page-about .about-metric__fill--yellow { background: var(--yellow-400); }

.page-about .about-capability__visual {
  margin-top: 42px;
}

.page-about .about-capability__visual figure {
  margin: 0;
}

.page-about .about-capability__visual img {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
  display: block;
}

.page-about .about-capability__visual figcaption {
  margin-top: 12px;
  font-size: 13px;
  color: rgba(242, 244, 247, 0.62);
  text-align: center;
}

.page-about .about-capability__notes {
  display: grid;
  gap: 12px;
  margin-top: 38px;
}

.page-about .about-capability__note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.06);
  border-left: 3px solid var(--orange-500);
  padding: 14px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.page-about .about-capability__note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(242, 244, 247, 0.85);
}

.page-about .about-capability__mark {
  color: var(--orange-500);
  font-weight: 800;
  flex-shrink: 0;
}

/* ===== 团队与文化 ===== */
.page-about .about-team {
  background: var(--white-100);
  padding: 62px 16px 68px;
}

.page-about .about-team__inner {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  gap: 34px;
  align-items: center;
}

.page-about .about-team__visual {
  position: relative;
}

.page-about .about-team__media img {
  width: 100%;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  display: block;
}

.page-about .about-team__caption {
  display: block;
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  position: absolute;
  right: -8px;
  top: 26px;
  font-weight: 700;
}

.page-about .about-team__title {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.25;
  font-size: 26px;
  margin: 0 0 14px;
}

.page-about .about-team__text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
  margin: 0 0 12px;
}

.page-about .about-team__list {
  list-style: none;
  margin: 20px 0 24px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-team__list li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  color: var(--text-dark);
  font-weight: 500;
}

.page-about .about-team__list li::before {
  content: '›';
  position: absolute;
  left: 8px;
  color: var(--orange-500);
  font-weight: 800;
  font-size: 18px;
  line-height: 1;
  top: 1px;
}

/* ===== 资质与认证 ===== */
.page-about .about-credential {
  background: var(--white-100);
  padding: 0 16px 68px;
}

.page-about .about-credential__inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.page-about .about-credential__title {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.25;
  font-size: 28px;
  margin: 0 0 12px;
}

.page-about .about-credential__desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
  margin: 0;
  max-width: 62ch;
}

.page-about .about-credential__grid {
  display: grid;
  gap: 16px;
  margin-top: 34px;
}

.page-about .about-credential__item {
  background: var(--about-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--ease), transform var(--ease);
}

.page-about .about-credential__item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.page-about .about-credential__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(255, 77, 0, 0.1);
  color: var(--orange-500);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 16px;
  margin-bottom: 16px;
}

.page-about .about-credential__item h3 {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text-dark);
}

.page-about .about-credential__item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ===== 底部 CTA ===== */
.page-about .about-cta {
  background: linear-gradient(140deg, var(--black-900) 0%, #2B1206 55%, #7A2A0D 100%);
  padding: 64px 16px;
}

.page-about .about-cta__inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.page-about .about-cta__title {
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: 800;
  color: var(--white-100);
  margin: 0 0 12px;
}

.page-about .about-cta__text {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 244, 247, 0.78);
  margin: 0 0 26px;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

/* ===== 响应式增强 ===== */
@media (min-width: 600px) {
  .page-about .about-strip {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-strip__item:nth-child(4),
  .page-about .about-strip__item:nth-child(5) {
    grid-column: span 1;
  }

  .page-about .about-capability__grid {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 48px;
  }

  .page-about .about-capability__notes {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .about-credential__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 56px 32px 76px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 60px;
  }

  .page-about .about-hero__title {
    font-size: 44px;
  }

  .page-about .about-hero__lead {
    font-size: 16px;
  }

  .page-about .about-strip {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-about .about-journey {
    padding: 76px 32px;
  }

  .page-about .about-journey__title {
    font-size: 34px;
  }

  .page-about .about-timeline {
    margin-left: 0;
  }

  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .about-timeline__item {
    width: 50%;
    padding-left: 0;
    padding-right: 52px;
    margin-bottom: 34px;
    text-align: right;
  }

  .page-about .about-timeline__item::before {
    left: auto;
    right: -9px;
  }

  .page-about .about-timeline__item:nth-child(even) {
    margin-left: 50%;
    padding-left: 52px;
    padding-right: 0;
    text-align: left;
  }

  .page-about .about-timeline__item:nth-child(even)::before {
    right: auto;
    left: -9px;
  }

  .page-about .about-timeline__year {
    margin-bottom: 12px;
  }

  .page-about .about-capability {
    padding: 78px 32px 80px;
  }

  .page-about .about-capability__title {
    font-size: 34px;
  }

  .page-about .about-capability__grid {
    grid-template-columns: repeat(4, 1fr);
    column-gap: 32px;
  }

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

  .page-about .about-team {
    padding: 78px 32px;
  }

  .page-about .about-team__inner {
    grid-template-columns: 1fr 1fr;
    gap: 58px;
  }

  .page-about .about-team__title {
    font-size: 30px;
  }

  .page-about .about-credential {
    padding: 0 32px 84px;
  }

  .page-about .about-credential__title {
    font-size: 34px;
  }

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

  .page-about .about-cta {
    padding: 76px 32px;
  }

  .page-about .about-cta__title {
    font-size: 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__card,
  .page-about .about-credential__item {
    transition: none;
  }
}