.page-about {
  --about-radius-lg: 32px;
  --about-radius-md: 20px;
  --about-line: rgba(217, 208, 192, 0.45);
  --about-gap: 32px;
  background: var(--cream);
  color: var(--ink);
  overflow-x: hidden;
}

/* ===== 面包屑与页面入口 ===== */
.page-about .breadcrumb {
  padding-top: 28px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

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

.page-about .breadcrumb a:hover {
  text-decoration: underline;
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--ink);
}

/* ===== 品牌理念区 ===== */
.page-about .about-intro {
  padding: 40px 0 72px;
}

.page-about .about-intro__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--about-gap) + 16px);
  align-items: start;
}

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

.page-about .about-intro__content .data-index {
  display: inline-flex;
  margin-bottom: 18px;
  background: rgba(30, 91, 138, 0.08);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
}

.page-about .about-intro h1 {
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  color: var(--ink);
}

.page-about .about-intro__accent {
  display: block;
  color: var(--orange);
  font-size: clamp(20px, 2.8vw, 30px);
  font-weight: 800;
  margin-top: 8px;
}

.page-about .about-intro__lead {
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.75;
  color: var(--ink);
  max-width: 62ch;
  margin: 0 0 12px;
  font-weight: 500;
}

.page-about .about-intro__text {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(43, 30, 22, 0.82);
  max-width: 62ch;
  margin: 0 0 32px;
}

.page-about .about-intro__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.page-about .about-stat {
  background: var(--snow);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  position: relative;
  overflow: hidden;
}

.page-about .about-stat::after {
  content: "";
  position: absolute;
  right: -12px;
  top: -12px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(30, 91, 138, 0.10), rgba(232, 115, 42, 0.08));
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 700;
  color: var(--blue);
  line-height: 1.1;
}

.page-about .about-stat__unit {
  font-size: 0.55em;
  margin-left: 2px;
  color: var(--orange);
}

.page-about .about-stat__label {
  display: block;
  font-size: 13px;
  color: rgba(43, 30, 22, 0.65);
  margin-top: 6px;
  letter-spacing: 0.03em;
}

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

.page-about .about-intro__frame {
  border-radius: var(--about-radius-lg);
  overflow: hidden;
  transform: rotate(-1.2deg);
  box-shadow: 0 18px 40px rgba(43, 30, 22, 0.16);
}

.page-about .about-intro__frame img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-about .about-intro__note {
  background: var(--navy);
  color: var(--snow);
  border-radius: 20px;
  padding: 16px 20px;
  margin-top: -18px;
  margin-left: 18px;
  position: relative;
  z-index: 2;
  width: fit-content;
  max-width: calc(100% - 18px);
  transform: rotate(0.8deg);
}

.page-about .about-intro__note .data-index {
  font-size: 11px;
}

.page-about .about-intro__note p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.5;
}

/* ===== 发展历程 ===== */
.page-about .about-timeline {
  background: var(--navy);
  color: var(--snow);
  border-radius: 0;
  padding: 72px 0 80px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--orange) 25%, var(--blue) 25%, var(--blue) 55%, var(--green) 55%, var(--green) 80%, var(--orange) 80%, var(--orange) 100%);
  opacity: 0.9;
}

.page-about .about-timeline .section__head--light h2 {
  color: var(--snow);
}

.page-about .about-timeline .section__head--light .section__lead {
  color: rgba(250, 250, 250, 0.72);
}

.page-about .about-timeline .data-index {
  color: var(--orange);
  border-color: rgba(232, 115, 42, 0.3);
}

.page-about .about-timeline__track {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 32px;
  position: relative;
}

.page-about .about-timeline__track::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: rgba(30, 91, 138, 0.5);
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 52px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 22px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 4px rgba(30, 91, 138, 0.25);
}

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--orange);
  display: block;
  margin-bottom: 8px;
}

.page-about .about-timeline__card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  padding: 20px 22px;
}

.page-about .about-timeline__card h3 {
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 8px;
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(250, 250, 250, 0.75);
}

/* ===== 资质与认证 ===== */
.page-about .about-cert {
  padding: 72px 0 80px;
}

.page-about .about-cert__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 32px;
}

.page-about .about-cert__item {
  background: var(--snow);
  border: 1px solid var(--line);
  border-radius: var(--about-radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  position: relative;
}

.page-about .about-cert__item:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(43, 30, 22, 0.10);
  border-color: rgba(30, 91, 138, 0.35);
}

.page-about .about-cert__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 24px;
  margin-bottom: 18px;
}

.page-about .about-cert__icon svg {
  width: 40px;
  height: 40px;
}

.page-about .about-cert__icon--blue {
  background: var(--blue);
  color: #fff;
}

.page-about .about-cert__icon--green {
  background: var(--green);
  color: #fff;
}

.page-about .about-cert__icon--orange {
  background: var(--orange);
  color: #fff;
}

.page-about .about-cert__item h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--ink);
}

.page-about .about-cert__item p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(43, 30, 22, 0.72);
  margin: 0;
  max-width: 34ch;
  margin-inline: auto;
}

/* ===== 运营团队 ===== */
.page-about .about-team {
  padding: 72px 0 80px;
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.page-about .about-team .section__head h2 {
  color: var(--ink);
}

.page-about .about-team__content > p {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(43, 30, 22, 0.82);
  margin: 0 0 24px;
  max-width: 58ch;
}

.page-about .about-team__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-team__list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--cream);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

.page-about .about-team__list .data-index {
  font-size: 12px;
  flex-shrink: 0;
  margin-top: 4px;
}

.page-about .about-team__list h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--ink);
}

.page-about .about-team__list p {
  font-size: 13px;
  line-height: 1.65;
  margin: 0;
  color: rgba(43, 30, 22, 0.72);
}

.page-about .about-team__contact {
  display: inline-block;
  background: var(--navy);
  color: var(--snow);
  border-radius: 18px;
  padding: 14px 20px;
  font-size: 14px;
}

.page-about .about-team__contact strong {
  color: var(--orange);
  font-weight: 700;
}

.page-about .about-team__media {
  border-radius: var(--about-radius-lg);
  overflow: hidden;
  transform: rotate(1.4deg);
  box-shadow: 0 16px 36px rgba(43, 30, 22, 0.12);
}

.page-about .about-team__frame img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== 覆盖范围 ===== */
.page-about .about-coverage {
  padding: 72px 0 72px;
}

.page-about .about-coverage__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 20px;
}

.page-about .about-coverage__media {
  border-radius: var(--about-radius-lg);
  overflow: hidden;
}

.page-about .about-coverage__frame {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
}

.page-about .about-coverage__frame img {
  width: 100%;
  height: auto;
  display: block;
}

.page-about .about-coverage__content > p {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(43, 30, 22, 0.82);
  margin: 0 0 24px;
  max-width: 60ch;
}

.page-about .about-coverage__items {
  display: grid;
  gap: 12px;
  margin-bottom: 24px;
}

.page-about .about-coverage__item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--snow);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

.page-about .about-coverage__item .data-index {
  font-size: 14px;
  flex-shrink: 0;
  font-weight: 700;
}

.page-about .about-coverage__item h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--ink);
}

.page-about .about-coverage__item p {
  font-size: 13px;
  line-height: 1.65;
  margin: 0;
  color: rgba(43, 30, 22, 0.72);
}

.page-about .about-coverage__note {
  background: var(--sand);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(43, 30, 22, 0.78);
  margin: 0 0 20px;
}

.page-about .about-coverage__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== 底部过渡区 ===== */
.page-about .about-bridge {
  background: var(--sand);
  position: relative;
}

.page-about .about-bridge__inner {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 24px 0;
}

.page-about .about-bridge__line {
  display: flex;
  gap: 5px;
  align-items: center;
}

.page-about .about-bridge__line span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.page-about .about-bridge__line span:nth-child(1) {
  background: var(--orange);
}

.page-about .about-bridge__line span:nth-child(2) {
  background: var(--blue);
}

.page-about .about-bridge__line span:nth-child(3) {
  background: var(--green);
}

.page-about .about-bridge__inner p {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin: 0;
  flex: 1;
  min-width: 240px;
}

/* ===== 响应式与动效 ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

[data-reveal="left"] {
  transform: translateX(-28px);
}

[data-reveal="right"] {
  transform: translateX(28px);
}

[data-reveal="zoom"] {
  transform: scale(0.94);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: translate(0, 0);
}

@media (min-width: 720px) {
  .page-about .about-intro__grid {
    grid-template-columns: 1.25fr 0.75fr;
    gap: 48px;
    align-items: center;
  }

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

  .page-about .about-timeline__track {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-top: 48px;
  }

  .page-about .about-timeline__track::before {
    left: 0;
    right: 0;
    top: 22px;
    bottom: auto;
    width: auto;
    height: 2px;
  }

  .page-about .about-timeline__item {
    padding-left: 0;
    padding-top: 56px;
  }

  .page-about .about-timeline__item::before {
    left: 0;
    top: 13px;
  }

  .page-about .about-timeline__card {
    padding: 20px;
  }

  .page-about .about-cert__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .about-coverage__grid {
    grid-template-columns: 0.72fr 1.28fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .about-coverage__media {
    order: 1;
  }

  .page-about .about-coverage__content {
    order: 2;
  }
}

@media (min-width: 1080px) {
  .page-about .about-intro__grid {
    gap: 72px;
  }

  .page-about .about-intro__content {
    padding-right: 20px;
  }

  .page-about .about-cert__item {
    padding: 36px 28px;
  }

  .page-about .about-coverage__items {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }

  .page-about .about-coverage__item {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .about-cert__item:hover,
  .page-about .about-timeline__card:hover {
    transform: none;
  }
}