.page-about {
  --about-paper: #FBF7EF;
  --about-paper-deep: #F2EBDE;
  --about-ink-soft: #49515E;
  --about-panel-shadow: 0 16px 40px rgba(8, 20, 41, 0.10);
  background: var(--about-paper);
  color: var(--c-text);
}

/* ===== 首屏 Hero ===== */
.page-about .about-hero {
  position: relative;
  padding: 72px 0 64px;
  background: linear-gradient(120deg, var(--c-primary) 0%, #0E2A52 72%, var(--c-dark) 100%);
  color: var(--c-white);
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -30px;
  right: -120px;
  width: 240px;
  height: 130%;
  background: linear-gradient(180deg, rgba(255, 107, 26, 0.92), rgba(255, 107, 26, 0.45));
  transform: skewX(-16deg);
  transform-origin: top right;
  z-index: 1;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(192, 192, 192, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(192, 192, 192, 0.08) 1px, transparent 1px);
  background-size: 44px 44px;
  z-index: 0;
}
.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 40px;
  align-items: center;
}
.page-about .about-hero__eyebrow {
  color: var(--c-gold);
}
.page-about .about-hero__title {
  margin: 18px 0 20px;
  font-family: 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: clamp(38px, 6.8vw, 68px);
  font-weight: 200;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--c-white);
}
.page-about .about-hero__lead {
  max-width: 560px;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 28px;
}
.page-about .about-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-hero .tag {
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(11, 29, 58, 0.35);
  color: var(--c-white);
}
.page-about .about-hero .tag--accent {
  background: var(--c-accent);
  border-color: var(--c-accent);
}
.page-about .about-hero__media {
  position: relative;
  z-index: 2;
  max-width: 300px;
  margin: 0 auto;
}
.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(255, 255, 255, 0.28);
  box-shadow: var(--about-panel-shadow);
  transform: rotate(2deg);
}

/* ===== 面包屑 ===== */
.page-about .about-breadcrumb {
  padding: 18px 0;
  border-bottom: 1px solid rgba(11, 29, 58, 0.08);
  background: var(--about-paper-deep);
}

/* ===== 通用区块 ===== */
.page-about .about-section {
  padding: 56px 0;
}
.page-about .section-head {
  margin-bottom: 36px;
}

/* ===== 品牌定位 ===== */
.page-about .about-profile {
  position: relative;
  background: var(--about-paper);
}
.page-about .about-profile::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(45deg, transparent 0 16px, rgba(11, 29, 58, 0.02) 16px 17px);
  pointer-events: none;
}
.page-about .about-profile .container {
  position: relative;
}
.page-about .about-profile__grid {
  display: grid;
  gap: 40px;
}
.page-about .about-profile__main {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-top: 4px solid var(--c-accent);
  padding: 28px;
  box-shadow: 6px 6px 0 0 var(--about-paper-deep), 14px 14px 0 0 rgba(11, 29, 58, 0.04);
}
.page-about .about-profile__lead {
  margin-bottom: 16px;
  font-size: 20px;
  line-height: 1.6;
  font-weight: 600;
  color: var(--c-primary);
}
.page-about .about-profile__main p {
  line-height: 1.8;
  margin-bottom: 14px;
  color: var(--c-text);
}
.page-about .about-profile__main a,
.page-about .about-milestones a,
.page-about .about-capability a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-about .about-profile__main a:hover,
.page-about .about-milestones a:hover,
.page-about .about-capability a:hover {
  color: var(--c-primary);
}
.page-about .about-profile__facts {
  background: var(--c-light);
  border: 1px solid var(--c-border);
  padding: 26px;
  box-shadow: 0 8px 24px rgba(11, 29, 58, 0.06);
}
.page-about .about-profile__facts h3 {
  font-family: var(--font-head);
  font-size: 18px;
  letter-spacing: 0.05em;
  color: var(--c-primary);
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--c-accent);
}
.page-about .about-profile__facts ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-profile__facts li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--c-border);
  font-size: 15px;
}
.page-about .about-profile__facts li:last-child {
  border-bottom: 0;
}
.page-about .about-profile__facts span {
  color: var(--c-text-2);
  flex-shrink: 0;
}

/* ===== 发展里程碑 ===== */
.page-about .about-milestones {
  background: var(--about-paper-deep);
  border-top: 1px solid rgba(11, 29, 58, 0.08);
  border-bottom: 1px solid rgba(11, 29, 58, 0.08);
}
.page-about .about-timeline {
  position: relative;
  margin-top: 8px;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 8px;
  bottom: 16px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-accent) 0%, var(--c-silver) 55%, rgba(192, 192, 192, 0.28) 100%);
}
.page-about .about-timeline__item {
  position: relative;
  padding-left: 72px;
  margin-bottom: 32px;
}
.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 8px;
  width: 14px;
  height: 14px;
  border: 3px solid var(--c-accent);
  border-radius: 50%;
  background: var(--about-paper-deep);
  box-shadow: 0 0 0 4px rgba(255, 107, 26, 0.14);
}
.page-about .about-timeline__year {
  position: absolute;
  left: 0;
  top: 0;
  width: 56px;
  text-align: right;
  padding-right: 18px;
  font-family: var(--font-head);
  font-size: 24px;
  line-height: 1.2;
  color: var(--c-accent);
}
.page-about .about-timeline__content {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-accent);
  padding: 18px 20px;
  box-shadow: 0 4px 16px rgba(8, 20, 41, 0.05);
  transition: transform var(--ease), box-shadow var(--ease);
}
.page-about .about-timeline__item:hover .about-timeline__content,
.page-about .about-timeline__item:focus-within .about-timeline__content {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(8, 20, 41, 0.10);
}
.page-about .about-timeline__content h3 {
  font-family: var(--font-head);
  font-size: 20px;
  color: var(--c-primary);
  margin-bottom: 6px;
}
.page-about .about-timeline__content p {
  line-height: 1.75;
  color: var(--c-text);
  font-size: 15px;
}
.page-about .about-timeline__media {
  margin: 4px 0 32px 72px;
  max-width: 400px;
}
.page-about .about-timeline__media img,
.page-about .about-capability__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--c-border);
  box-shadow: 0 12px 30px rgba(8, 20, 41, 0.10);
}
.page-about .about-timeline__media figcaption,
.page-about .about-capability__media figcaption {
  margin-top: 8px;
  font-size: 13px;
  color: var(--c-text-2);
}

/* ===== 资质与合规 ===== */
.page-about .about-compliance {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-dark) 100%);
  color: var(--c-white);
}
.page-about .about-compliance__head h2 {
  color: var(--c-white);
}
.page-about .about-compliance__head .section-head__eyebrow {
  color: var(--c-silver);
  border-color: rgba(192, 192, 192, 0.4);
}
.page-about .about-compliance__grid {
  display: grid;
  gap: 20px;
}
.page-about .about-compliance__card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(192, 192, 192, 0.22);
  border-top: 2px solid var(--c-accent);
  padding: 24px;
  transition: background var(--ease), transform var(--ease);
}
.page-about .about-compliance__card:hover {
  background: rgba(255, 255, 255, 0.10);
  transform: translateY(-2px);
}
.page-about .about-compliance__icon {
  display: inline-block;
  font-size: 28px;
  line-height: 1;
  color: var(--c-gold);
  margin-bottom: 12px;
}
.page-about .about-compliance__card h3 {
  font-family: var(--font-head);
  font-size: 20px;
  margin-bottom: 8px;
  color: var(--c-white);
}
.page-about .about-compliance__card p {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.86);
}
.page-about .about-compliance__card b {
  color: var(--c-gold);
  font-weight: 600;
}

/* ===== 服务能力 ===== */
.page-about .about-capability {
  background: var(--about-paper);
}
.page-about .about-capability__grid {
  display: grid;
  gap: 40px;
}
.page-about .about-capability__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.page-about .about-capability__stats .stat {
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-top: 3px solid var(--c-accent);
  padding: 22px 16px;
  text-align: center;
  box-shadow: 0 6px 18px rgba(8, 20, 41, 0.05);
}
.page-about .about-capability__stats .stat__value {
  display: block;
  font-size: 34px;
  line-height: 1.1;
  color: var(--c-primary);
  margin-bottom: 6px;
}
.page-about .about-capability__stats .stat__label {
  font-size: 13px;
  color: var(--c-text-2);
}
.page-about .about-capability__media img {
  background: var(--c-light);
}
.page-about .about-capability__description {
  max-width: 860px;
  margin-top: 40px;
  display: grid;
  gap: 14px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text);
}

/* ===== 响应式增强 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 96px 0 88px;
  }
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }
  .page-about .about-hero__media {
    justify-self: end;
  }
  .page-about .about-profile__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 48px;
  }
  .page-about .about-timeline__year {
    font-size: 30px;
  }
  .page-about .about-compliance__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .page-about .about-profile__grid {
    gap: 64px;
  }
  .page-about .about-compliance__grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .about-capability__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
  }
  .page-about .about-capability__description {
    margin-top: 48px;
  }
}