.page-about {
  background: var(--cream);
  color: var(--rock-dark);
}

.page-about .breadcrumb {
  padding-top: 24px;
}

.page-about .text-highlight {
  font-family: var(--font-meta);
  font-style: normal;
  padding: 0 2px;
  background: linear-gradient(transparent 60%, rgba(228, 181, 148, 0.4) 60%);
  color: var(--rock-dark);
}

.page-about section h2 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  line-height: 1.24;
  color: var(--rock-dark);
}

.page-about figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--rock-mid);
  background: var(--cream-warm);
}

.page-about figure figcaption {
  margin-top: 10px;
  font-family: var(--font-meta);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--rock-mid);
}

/* ---- 01 首屏 ---- */
.page-about .about-hero {
  position: relative;
  padding: clamp(44px, 6vw, 84px) 0 clamp(48px, 7vw, 96px);
  border-bottom: 1px solid var(--rock-mid);
  background:
    linear-gradient(90deg, rgba(234, 226, 212, 0.55) 1px, transparent 1px),
    linear-gradient(rgba(234, 226, 212, 0.55) 1px, transparent 1px),
    var(--cream);
  background-size: 56px 56px;
  overflow: hidden;
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about .about-hero h1 {
  margin: 12px 0 24px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.3rem, 5.2vw, 4.4rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--rock-dark);
  max-width: 860px;
}

.page-about .about-hero__lead {
  margin: 0 0 36px;
  max-width: 560px;
  font-size: 1.02rem;
  line-height: 1.9;
  color: var(--rock-mid);
}

.page-about .about-hero__meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px 24px;
  padding-top: 20px;
  border-top: 1px solid var(--rock-mid);
}

.page-about .about-hero__meta-label {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-meta);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--rock-mid);
}

.page-about .about-hero__meta-value {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.4rem;
  color: var(--terracotta-dark);
}

.page-about .about-hero__side {
  display: none;
}

/* ---- 02 起源 ---- */
.page-about .about-origin {
  padding: var(--space-section) 0;
}

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.page-about .about-origin__text p {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--rock-mid);
}

.page-about .about-origin__note {
  margin-top: 24px;
  padding: 16px 20px;
  border-left: 3px solid var(--terracotta-dark);
  background: var(--cream-warm);
  font-size: 0.92rem;
  color: var(--rock-dark);
  line-height: 1.8;
}

/* ---- 03 时间线 ---- */
.page-about .about-timeline {
  padding: var(--space-section) 0;
  background: var(--cream-warm);
  border-top: 1px solid var(--cream);
  border-bottom: 1px solid var(--cream);
}

.page-about .about-timeline__head {
  margin-bottom: 48px;
}

.page-about .about-timeline__range {
  display: block;
  margin-top: 8px;
  font-family: var(--font-meta);
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.24em;
  color: var(--terracotta-dark);
}

.page-about .about-timeline__desc {
  max-width: 560px;
  margin: 0;
  color: var(--rock-mid);
  line-height: 1.8;
}

.page-about .about-timeline__track {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 28px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 18px;
  bottom: -32px;
  width: 1px;
  background: var(--rock-mid);
}

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

.page-about .about-timeline__node {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.page-about .about-timeline__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--terracotta-dark);
  border: 2px solid var(--cream-warm);
  box-shadow: 0 0 0 1px var(--terracotta-dark);
  transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.page-about .about-timeline__year {
  font-family: var(--font-meta);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--rock-dark);
}

.page-about .about-timeline__card {
  padding: 18px 20px 20px;
  background: var(--cream);
  border: 1px solid var(--rock-mid);
  border-radius: var(--radius-card);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.page-about .about-timeline__card:hover {
  border-color: var(--terracotta-dark);
  box-shadow: 6px 6px 0 0 rgba(165, 87, 46, 0.14);
  transform: translateY(-4px);
}

.page-about .about-timeline__tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 2px 8px;
  font-family: var(--font-meta);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--moss-dark);
  background: rgba(62, 90, 47, 0.08);
  border: 1px solid rgba(62, 90, 47, 0.18);
}

.page-about .about-timeline__card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--rock-dark);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--rock-mid);
}

.page-about .about-timeline__item:hover .about-timeline__dot {
  background: var(--moss-dark);
  box-shadow: 0 0 0 4px rgba(62, 90, 47, 0.2);
  transform: scale(1.2);
}

/* ---- 统计带 ---- */
.page-about .about-stat-band {
  padding: clamp(48px, 6vw, 72px) 0;
  background: var(--rock-deep);
}

.page-about .about-stat-band__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 24px;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-stat__num {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.2rem, 4.6vw, 3.4rem);
  line-height: 1;
  color: var(--terracotta-light);
}

.page-about .about-stat__num em {
  font-style: normal;
  font-size: 0.5em;
  margin-left: 2px;
  color: var(--cream);
}

.page-about .about-stat__label {
  font-family: var(--font-meta);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(244, 239, 230, 0.62);
}

/* ---- 04 本地化 ---- */
.page-about .about-local {
  padding: var(--space-section) 0;
}

.page-about .about-local__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.page-about .about-local__intro p {
  margin: 0 0 16px;
  line-height: 1.9;
  color: var(--rock-mid);
}

.page-about .about-local__points {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-local__points li {
  position: relative;
  padding-left: 22px;
  line-height: 1.7;
  color: var(--rock-dark);
}

.page-about .about-local__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.52em;
  width: 8px;
  height: 8px;
  background: var(--moss-dark);
  transform: rotate(45deg);
}

.page-about .about-local__note {
  padding: 14px 18px;
  border-left: 3px solid var(--moss-dark);
  background: var(--cream-warm);
  font-size: 0.92rem;
  line-height: 1.8;
}

/* ---- 05 安全 ---- */
.page-about .about-security {
  padding: var(--space-section) 0;
  background: var(--accent-blue);
  color: var(--cream);
}

.page-about .about-security .section-label,
.page-about .about-security .section-label span {
  color: var(--terracotta-light);
}

.page-about .about-security h2 {
  color: var(--cream);
}

.page-about .about-security__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.page-about .about-security__lead {
  margin: 0 0 28px;
  max-width: 520px;
  font-size: 1.05rem;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.84);
}

.page-about .about-security__items {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-security__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 20px;
  background: rgba(244, 239, 230, 0.07);
  border: 1px solid rgba(244, 239, 230, 0.14);
  border-radius: var(--radius-card);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.page-about .about-security__item:hover {
  background: rgba(244, 239, 230, 0.12);
  border-color: rgba(228, 181, 148, 0.5);
}

.page-about .about-security__icon {
  flex: none;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-meta);
  font-size: 0.78rem;
  color: var(--terracotta-light);
  border: 1px solid rgba(244, 239, 230, 0.3);
  border-radius: 50%;
}

.page-about .about-security__item h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--cream);
}

.page-about .about-security__item p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: rgba(244, 239, 230, 0.72);
}

.page-about .about-security__figure figcaption {
  color: rgba(244, 239, 230, 0.55);
}

/* ---- 06 合作生态 ---- */
.page-about .about-eco {
  padding: var(--space-section) 0;
  background: var(--cream-warm);
}

.page-about .about-eco__head {
  max-width: 720px;
  margin-bottom: 40px;
}

.page-about .about-eco__head p {
  margin: 0;
  color: var(--rock-mid);
  line-height: 1.8;
}

.page-about .about-eco__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-eco__card {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 28px;
  background: var(--cream);
  border: 1px solid var(--rock-mid);
  border-radius: var(--radius-card);
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-eco__card:hover {
  border-color: var(--accent-blue);
  box-shadow: 6px 6px 0 0 rgba(59, 58, 90, 0.12);
  transform: translateY(-4px);
}

.page-about .about-eco__num {
  flex: none;
  min-width: 56px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--accent-blue);
}

.page-about .about-eco__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--rock-dark);
}

.page-about .about-eco__body p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--rock-mid);
}

/* ---- CTA ---- */
.page-about .about-cta {
  padding: clamp(56px, 8vw, 88px) 0;
  background: var(--terracotta-dark);
  color: var(--cream);
  border-top: 1px solid var(--rock-deep);
}

.page-about .about-cta h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.8rem, 3.6vw, 2.8rem);
  color: var(--cream);
}

.page-about .about-cta__inner > p {
  max-width: 560px;
  margin: 0 0 28px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.85);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}

.page-about .about-cta .btn--primary {
  background: var(--cream);
  border-color: var(--cream);
  color: var(--terracotta-dark);
}

.page-about .about-cta .btn--secondary {
  background: transparent;
  border-color: var(--cream);
  color: var(--cream);
}

.page-about .about-cta .btn--secondary:hover {
  background: var(--cream);
  color: var(--terracotta-dark);
}

.page-about .about-cta__note {
  font-size: 0.88rem;
  color: rgba(244, 239, 230, 0.65);
}

.page-about .about-cta__note a {
  color: var(--terracotta-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-cta__note a:hover {
  color: var(--cream);
}

/* ---- 响应式 ---- */
@media (min-width: 768px) {
  .page-about .about-hero__meta {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: 7fr 3fr;
  }

  .page-about .about-hero__side {
    display: block;
    position: relative;
    text-align: right;
  }

  .page-about .about-hero__ghost {
    position: sticky;
    top: 140px;
    display: block;
    font-family: var(--font-display);
    font-weight: 300;
    font-size: clamp(4rem, 7vw, 6.8rem);
    line-height: 0.92;
    letter-spacing: -0.04em;
    text-transform: uppercase;
    color: rgba(91, 111, 106, 0.16);
    user-select: none;
  }

  .page-about .about-hero__formula {
    display: block;
    margin-top: 24px;
    font-family: var(--font-meta);
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--rock-mid);
  }

  .page-about .about-origin__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 72px;
  }

  .page-about .about-local__grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 64px;
  }

  .page-about .about-security__inner {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 64px;
  }

  .page-about .about-eco__layout {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .page-about .about-eco__card {
    flex-direction: column;
    gap: 12px;
  }

  .page-about .about-timeline__track {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 20px;
  }

  .page-about .about-timeline__track::before {
    content: "";
    position: absolute;
    top: 22px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--rock-mid) 0%, var(--terracotta-dark) 50%, var(--rock-mid) 100%);
  }

  .page-about .about-timeline__item {
    padding: 64px 0 0;
  }

  .page-about .about-timeline__item::before {
    display: none;
  }

  .page-about .about-timeline__node {
    position: absolute;
    top: 10px;
    left: 0;
    margin: 0;
  }

  .page-about .about-timeline__dot {
    width: 14px;
    height: 14px;
  }

  .page-about .about-timeline__card {
    padding: 16px 16px 18px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-security__items {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-timeline__track {
    gap: 28px;
  }
}