.page-about {
  --page-paper: var(--beige);
  --page-paper-deep: #d8ccb0;
  --page-border: 1px solid rgba(26, 26, 26, 0.18);
  --page-border-soft: rgba(26, 26, 26, 0.12);
  --page-border-light: rgba(245, 247, 244, 0.18);
  --page-shadow: 12px 12px 0 rgba(11, 59, 46, 0.08);
  --page-shadow-hard: 8px 8px 0 rgba(26, 26, 26, 0.14);
  overflow-x: hidden;
  background: var(--green);
  color: var(--white);
}

/* ===================== 首屏 ===================== */
.about-hero {
  position: relative;
  padding: 24px 0 72px;
}

.about-hero::before {
  content: "";
  position: absolute;
  top: 30px;
  right: -60px;
  width: 240px;
  height: 420px;
  background: var(--orange);
  opacity: 0.08;
  transform: rotate(18deg);
  border-radius: 40px;
  pointer-events: none;
}

.about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 40px;
  background: var(--beige);
  clip-path: polygon(0 38%, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.about-crumbs {
  margin-bottom: 42px;
}

.about-crumbs a {
  color: rgba(245, 247, 244, 0.72);
  text-decoration: none;
  font-size: 0.92rem;
}

.about-crumbs .crumb-current {
  color: var(--white);
  font-size: 0.92rem;
}

.about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
}

.about-hero-main h1 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  line-height: 1.08;
  letter-spacing: 0.02em;
  margin: 14px 0 6px;
}

.about-hero-slogan {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.3rem;
  letter-spacing: 0.12em;
  color: var(--orange);
  text-transform: uppercase;
  margin: 0 0 18px;
}

.about-hero-desc {
  color: rgba(245, 247, 244, 0.82);
  line-height: 1.8;
  font-size: 1.02rem;
  max-width: 640px;
  margin: 0;
}

.about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 20px;
  margin-top: 28px;
}

.about-hero-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 10px 0;
}

.about-hero-card {
  position: relative;
  background: var(--beige);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 26px 28px;
  box-shadow: var(--page-shadow-hard);
  max-width: 360px;
}

.about-hero-card-sub {
  margin-left: 32px;
}

.about-hero-card-label,
.about-hero-card-note {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: rgba(26, 26, 26, 0.64);
}

.about-hero-card-value {
  display: block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 3rem;
  line-height: 1.25;
  color: var(--orange);
  margin: 2px 0 6px;
}

/* ===================== 品牌理念 ===================== */
.about-philosophy {
  background: var(--beige);
  color: var(--ink);
  padding: 64px 0;
}

.about-philosophy .section-label,
.about-service .section-label {
  color: var(--green);
}

.about-philosophy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  border: var(--page-border);
  border-radius: var(--radius);
  background: rgba(245, 247, 244, 0.72);
  padding: 32px 24px;
  box-shadow: 18px 18px 0 rgba(11, 59, 46, 0.06);
}

.about-philosophy-text h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1.18;
  margin: 14px 0 20px;
}

.about-philosophy-text p {
  line-height: 1.8;
  margin: 0 0 12px;
  color: rgba(26, 26, 26, 0.78);
}

.about-text-link {
  display: inline-block;
  margin-top: 8px;
  padding-bottom: 2px;
  color: var(--orange);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
}

.about-philosophy-img {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background: var(--green);
}

.about-philosophy-img::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 6px solid rgba(245, 247, 244, 0.35);
  border-radius: var(--radius);
  pointer-events: none;
}

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

.about-philosophy-img figcaption {
  position: absolute;
  left: 16px;
  bottom: 12px;
  color: var(--white);
  background: rgba(11, 59, 46, 0.72);
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
}

/* ===================== 发展历程 ===================== */
.about-journey {
  background: var(--green);
  color: var(--white);
  padding: 68px 0 40px;
}

.about-journey-head h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  margin: 12px 0 12px;
}

.about-journey-head p {
  color: rgba(245, 247, 244, 0.76);
  line-height: 1.7;
  max-width: 680px;
  margin: 0;
}

.about-journey-scroll {
  margin-top: 36px;
  overflow-x: auto;
  padding-bottom: 18px;
  scrollbar-width: thin;
  scrollbar-color: var(--orange) rgba(245, 247, 244, 0.14);
}

.about-journey-scroll::-webkit-scrollbar {
  height: 6px;
}

.about-journey-scroll::-webkit-scrollbar-track {
  background: rgba(245, 247, 244, 0.12);
  border-radius: 3px;
}

.about-journey-scroll::-webkit-scrollbar-thumb {
  background: var(--orange);
  border-radius: 3px;
}

.about-journey-track {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 20px 0;
  min-width: max-content;
}

.about-journey-item {
  width: 270px;
  flex-shrink: 0;
  background: rgba(245, 247, 244, 0.06);
  border: 1px solid var(--page-border-light);
  border-top: 3px solid var(--orange);
  border-radius: var(--radius-sm);
  padding: 22px 20px;
  transition: background var(--duration) var(--ease), transform var(--duration) var(--ease);
}

.about-journey-item:hover {
  background: rgba(245, 247, 244, 0.12);
  transform: translateY(-4px);
}

.about-journey-year {
  display: inline-block;
  font-family: var(--font-data);
  font-weight: 600;
  font-size: 1.4rem;
  color: var(--orange);
  margin-bottom: 6px;
}

.about-journey-item h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 8px;
}

.about-journey-item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: rgba(245, 247, 244, 0.72);
}

.about-journey-bg {
  margin-top: 16px;
  border-radius: var(--radius);
  overflow: hidden;
  max-height: 120px;
}

.about-journey-bg img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  display: block;
  opacity: 0.3;
  filter: grayscale(0.5);
}

/* ===================== 数据服务体系 ===================== */
.about-service {
  background: var(--white);
  color: var(--ink);
  padding: 68px 0;
}

.about-service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
}

.about-service-img {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 8 / 5;
  background: var(--green);
}

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

.about-service-img figcaption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  color: var(--white);
  background: rgba(11, 59, 46, 0.74);
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
}

.about-service-content h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.3vw, 2.2rem);
  margin: 12px 0 16px;
}

.about-service-content p {
  line-height: 1.75;
  color: rgba(26, 26, 26, 0.76);
  margin: 0 0 14px;
}

.about-service-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 24px 0;
}

.about-service-stat {
  background: var(--beige);
  border: 1px solid var(--page-border-soft);
  border-radius: var(--radius-sm);
  padding: 18px 14px;
  text-align: center;
  box-shadow: 4px 4px 0 rgba(11, 59, 46, 0.06);
}

.about-service-stat-num {
  display: block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--orange);
  line-height: 1.2;
}

.about-service-stat-label {
  display: block;
  font-size: 0.8rem;
  margin-top: 4px;
  color: rgba(26, 26, 26, 0.62);
}

/* ===================== 所在地与生态 ===================== */
.about-eco {
  background: var(--green);
  color: var(--white);
  padding: 0 0 84px;
}

.about-eco .container {
  padding-top: 20px;
}

.about-eco-curve {
  line-height: 0;
  background: var(--white);
}

.about-eco-curve svg {
  display: block;
  width: 100%;
  height: 60px;
}

.about-eco h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  margin: 12px 0 24px;
}

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

.about-eco-card {
  border-radius: var(--radius);
  padding: 30px 28px;
  border: 1px solid var(--page-border-light);
  background: rgba(245, 247, 244, 0.06);
}

.about-eco-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 12px;
}

.about-eco-card p,
.about-eco-card li {
  color: rgba(245, 247, 244, 0.76);
  line-height: 1.75;
}

.about-eco-card ul {
  margin: 0 0 12px;
  padding: 0;
}

.about-eco-card li {
  list-style: none;
  padding-left: 18px;
  margin-bottom: 8px;
  position: relative;
}

.about-eco-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  background: var(--orange);
  border-radius: 2px;
}

.about-eco-contact a {
  color: var(--orange);
  text-decoration: none;
}

.about-eco-link {
  display: inline-block;
  margin-top: 12px;
  padding-bottom: 2px;
  color: var(--orange);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
}

/* ===================== 响应式增强 ===================== */
@media (min-width: 640px) {
  .about-service-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .about-hero-card-main {
    margin-left: 0;
  }
}

@media (min-width: 992px) {
  .about-hero {
    padding: 40px 0 88px;
  }

  .about-hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
  }

  .about-hero-card-main {
    transform: translateX(28px) rotate(1.5deg);
  }

  .about-hero-card-sub {
    margin-left: 80px;
    transform: translateX(-8px) rotate(-1deg);
  }

  .about-philosophy {
    padding: 88px 0;
  }

  .about-philosophy-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
    align-items: center;
    padding: 40px 36px;
  }

  .about-journey {
    padding: 88px 0 64px;
  }

  .about-journey-track {
    gap: 28px;
  }

  .about-journey-item {
    width: 320px;
  }

  .about-service {
    padding: 88px 0;
  }

  .about-service-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 60px;
    align-items: center;
  }

  .about-eco-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .about-eco-curve svg {
    height: 80px;
  }
}