.page-about {
  --about-gap: clamp(28px, 5vw, 68px);
  --about-rule: rgba(30, 58, 95, .85);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(96px, 13vh, 148px) 0 clamp(48px, 7vw, 84px);
  background:
    radial-gradient(660px 400px at 84% 6%, rgba(34, 211, 238, .15), transparent 68%),
    radial-gradient(500px 360px at 4% 94%, rgba(251, 90, 30, .12), transparent 70%),
    var(--deep);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  left: 34%;
  right: -12%;
  bottom: 14%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, .7), transparent);
  transform: rotate(-7deg);
  opacity: .55;
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
  margin-top: clamp(24px, 4vw, 44px);
}

.page-about .about-hero h1 {
  margin: .55rem 0 1rem;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-about .about-hero .lede {
  color: var(--mist);
  max-width: 56ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

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

.page-about .about-pitch {
  display: block;
  width: 100%;
  height: auto;
  max-width: 460px;
  margin-inline: auto;
}

/* ---------- 数据速览 ---------- */
.page-about .about-numbers {
  padding-top: clamp(40px, 6vw, 72px);
}

.page-about .about-bench {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 1px;
  margin-top: clamp(24px, 4vw, 40px);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .about-bench__card {
  position: relative;
  background: var(--night);
  padding: 22px 20px 26px;
  min-height: 150px;
  transition: background .22s var(--ease);
}

.page-about .about-bench__card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--lava);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .26s var(--ease);
}

.page-about .about-bench__card:hover {
  background: #0E3055;
}

.page-about .about-bench__card:hover::after {
  transform: scaleX(1);
}

.page-about .about-bench__num {
  margin: 0;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--cyan-soft);
}

.page-about .about-bench__unit {
  margin-left: 4px;
  font-family: var(--font-body);
  font-size: .78rem;
  font-weight: 500;
  color: var(--mist);
  letter-spacing: 0;
}

.page-about .about-bench__label {
  margin: 12px 0 0;
  font-size: .9rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.5;
}

.page-about .about-bench__more {
  margin: 10px 0 0;
  font-size: .8rem;
  line-height: 1.65;
  color: var(--mist);
  max-height: 6em;
  opacity: 1;
  overflow: hidden;
  transition: max-height .26s var(--ease), opacity .2s var(--ease), color .2s var(--ease);
}

@media (hover: hover) and (pointer: fine) {
  .page-about .about-bench__more {
    max-height: 0;
    opacity: 0;
  }

  .page-about .about-bench__card:hover .about-bench__more {
    max-height: 6em;
    opacity: 1;
    color: var(--cyan-soft);
  }
}

/* ---------- 起点 ---------- */
.page-about .about-origin__grid {
  align-items: start;
  row-gap: var(--about-gap);
}

.page-about .about-origin__figure {
  margin: 0;
}

.page-about .about-origin__figure .media-frame {
  display: block;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
}

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

.page-about .about-origin__figure .media-caption {
  margin-top: 12px;
}

/* ---------- 服务对象标签页 ---------- */
.page-about .about-audience .tab-list {
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-audience .tab-panel {
  padding-top: clamp(20px, 3vw, 32px);
}

.page-about .about-audience__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  letter-spacing: -.015em;
  color: var(--white);
}

.page-about .about-audience__text {
  margin: 0;
  color: var(--mist);
  line-height: 1.85;
  max-width: 66ch;
}

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

.page-about .about-audience__list li {
  position: relative;
  padding-left: 18px;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--white);
}

.page-about .about-audience__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 2px;
  background: var(--lava);
}

/* ---------- 时间轴 ---------- */
.page-about .about-track {
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
}

.page-about .about-track__item {
  position: relative;
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 18px;
  padding-bottom: clamp(28px, 4vw, 46px);
}

.page-about .about-track__item:last-child {
  padding-bottom: 0;
}

.page-about .about-track__item::before {
  content: "";
  position: absolute;
  left: 26px;
  top: 58px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--line), rgba(30, 58, 95, 0));
}

.page-about .about-track__item:last-child::before {
  display: none;
}

.page-about .about-track__marker {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--deep);
  font-family: var(--font-num);
  font-size: .82rem;
  color: var(--cyan);
  position: relative;
  z-index: 1;
  transition: background .28s var(--ease), color .28s var(--ease),
              border-color .28s var(--ease), box-shadow .28s var(--ease);
}

.page-about .about-track__item.is-in .about-track__marker {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--deep);
  box-shadow: 0 0 0 6px rgba(34, 211, 238, .13);
}

.page-about .about-track__stage {
  margin: 4px 0 6px;
  font-family: var(--font-num);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--lava);
  text-transform: uppercase;
}

.page-about .about-track__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.1rem, 2.6vw, 1.5rem);
  letter-spacing: -.015em;
  color: var(--white);
  line-height: 1.3;
}

.page-about .about-track__text {
  margin: 0;
  color: var(--mist);
  line-height: 1.85;
  max-width: 64ch;
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  align-items: start;
  row-gap: var(--about-gap);
}

.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-team__figure .media-frame {
  display: block;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
}

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

.page-about .about-team__figure .media-caption {
  margin-top: 12px;
}

.page-about .about-team__lede {
  margin: 14px 0 0;
  color: var(--mist);
  line-height: 1.85;
  max-width: 62ch;
}

.page-about .about-team__roles {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-team__role {
  background: var(--deep);
  padding: 18px 20px 20px;
  border-left: 3px solid var(--cyan);
}

.page-about .about-team__role-name {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: .95rem;
  letter-spacing: .01em;
  color: var(--cyan-soft);
}

.page-about .about-team__role p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 呼吸区 ---------- */
.page-about .about-breath {
  position: relative;
  padding: clamp(20px, 4vw, 40px) 0 clamp(36px, 6vw, 70px);
}

.page-about .about-breath__figure {
  display: block;
  overflow: hidden;
  border-radius: 0;
  max-height: 320px;
}

.page-about .about-breath__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .78;
}

.page-about .about-breath__line {
  margin-top: 20px;
  font-family: var(--font-num);
  font-size: .84rem;
  letter-spacing: .08em;
  color: var(--mist);
}

/* ---------- 选择理由 ---------- */
.page-about .about-why__list {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .about-why__item {
  position: relative;
  padding: 24px 22px 24px 66px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, rgba(34, 211, 238, .07), rgba(6, 26, 46, 0) 62%);
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.page-about .about-why__item:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .about-why__index {
  position: absolute;
  left: 20px;
  top: 22px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: var(--r-sm);
  background: var(--lava);
  color: var(--on-lava);
  font-family: var(--font-num);
  font-weight: 700;
  font-size: .8rem;
}

.page-about .about-why__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.05rem;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-about .about-why__text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 生态 ---------- */
.page-about .about-eco__grid {
  align-items: start;
  row-gap: var(--about-gap);
}

.page-about .about-eco__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-eco__item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(16, 20, 24, .5);
}

.page-about .about-eco__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--lava);
  white-space: nowrap;
}

.page-about .about-eco__num span {
  margin-left: 3px;
  font-family: var(--font-body);
  font-size: .72rem;
  font-weight: 500;
  color: var(--mist);
}

.page-about .about-eco__label {
  font-size: .86rem;
  line-height: 1.5;
  color: var(--white);
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta {
  padding-bottom: clamp(56px, 8vw, 96px);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 24px;
  padding: clamp(26px, 4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(420px 200px at 92% 10%, rgba(251, 90, 30, .16), transparent 70%),
    var(--night);
}

.page-about .about-cta__text .section-note {
  max-width: 62ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-track__item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 32px;
  }

  .page-about .about-track__marker {
    width: 92px;
    height: 92px;
    font-size: .95rem;
  }

  .page-about .about-track__item::before {
    left: 46px;
    top: 96px;
  }

  .page-about .about-track__body {
    padding-top: 10px;
  }

  .page-about .about-why__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  }

  .page-about .about-breath__figure {
    max-height: 420px;
  }
}

@media (max-width: 719px) {
  .page-about .about-bench {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .about-why__item {
    padding: 22px 18px 22px 18px;
  }

  .page-about .about-why__index {
    position: static;
    margin-bottom: 12px;
  }

  .page-about .about-eco__item {
    flex-direction: column;
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-bench__card,
  .page-about .about-bench__more,
  .page-about .about-bench__card::after,
  .page-about .about-track__marker,
  .page-about .about-why__item {
    transition: none;
  }

  .page-about .about-why__item:hover {
    transform: none;
  }
}