.page-about {
  overflow-x: hidden;
  background: var(--white);
}

/* 面包屑 */
.page-about .breadcrumb-wrap {
  padding: 0.75rem 0 0;
}

.page-about .breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.page-about .breadcrumb a {
  color: var(--grey-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.page-about .breadcrumb a:hover {
  color: var(--green);
  border-color: var(--green);
}

/* ===== 品牌故事 ===== */
.page-about .about-story {
  position: relative;
  padding: 2.5rem 0 3.5rem;
  background: var(--grey-050);
  overflow: hidden;
}

.page-about .about-story__inner {
  display: grid;
  gap: 2.5rem;
}

.page-about .about-story__text .section-label {
  margin-bottom: 0.75rem;
}

.page-about .about-story__text h1 {
  font-family: var(--font-head);
  font-size: 2.25rem;
  font-weight: 900;
  line-height: 1.18;
  margin: 0 0 1.25rem;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.page-about .about-story__lead {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--ink);
  border-left: 3px solid var(--green);
  padding-left: 1rem;
  margin: 0 0 1rem;
}

.page-about .about-story__desc {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--grey-700);
  margin: 0;
}

.page-about .about-story__desc + .about-story__desc {
  margin-top: 0.875rem;
}

.page-about .about-story__facts {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.page-about .about-story__fact {
  background: var(--white);
  border-left: 3px solid var(--gold);
  padding: 0.875rem 1rem;
  box-shadow: 0 1px 4px rgba(17, 17, 17, 0.06);
}

.page-about .about-story__fact-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--green);
  line-height: 1.2;
}

.page-about .about-story__fact-label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--grey-500);
  margin-top: 0.25rem;
}

.page-about .about-story__image {
  position: relative;
  border-left: 4px solid var(--green);
  padding-left: 1rem;
}

.page-about .about-story__image::after {
  content: "";
  position: absolute;
  right: -6px;
  top: 12px;
  width: 24px;
  height: 24px;
  background: var(--blue);
  opacity: 0.5;
}

.page-about .about-story__image img {
  width: 100%;
  height: auto;
  display: block;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
  box-shadow: 10px 10px 0 rgba(30, 140, 90, 0.16);
  transform: skewY(-0.6deg);
}

/* 草原曲线 */
.page-about .about-grassline-wrap {
  height: 48px;
  overflow: hidden;
  background: linear-gradient(to bottom, var(--grey-050) 0%, var(--grey-050) 38%, var(--white) 38%, var(--white) 100%);
}

.page-about .about-grassline {
  display: block;
  width: 100%;
  height: 100%;
}

.page-about .about-grassline path {
  fill: var(--green);
  opacity: 0.16;
}

/* ===== 发展里程碑 ===== */
.page-about .about-milestones {
  padding: 3.5rem 0;
  background: var(--white);
}

.page-about .about-section-head {
  margin-bottom: 2rem;
}

.page-about .about-section-head .section-label {
  margin-bottom: 0.5rem;
}

.page-about .about-section-head h2 {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.2;
  margin: 0 0 0.5rem;
  color: var(--ink);
}

.page-about .about-section-head__desc {
  font-family: var(--font-body);
  color: var(--grey-500);
  font-size: 0.9375rem;
  margin: 0;
}

.page-about .about-timeline {
  position: relative;
  margin-top: 2.5rem;
  padding-top: 0.5rem;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 2.5rem;
  top: 1rem;
  bottom: 1rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--green) 0%, var(--blue) 100%);
  z-index: 0;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 1.25rem;
  padding-bottom: 2rem;
  transition: transform var(--transition);
}

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

.page-about .about-timeline__item:hover {
  transform: translateX(4px);
}

.page-about .about-timeline__marker {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.page-about .about-timeline__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.25rem;
  height: 3.25rem;
  background: var(--blue);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  transition: background var(--transition), transform var(--transition);
}

.page-about .about-timeline__item:hover .about-timeline__index {
  background: var(--green);
  transform: translateY(-2px) rotate(2deg);
}

.page-about .about-timeline__time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--grey-500);
  letter-spacing: 0.05em;
}

.page-about .about-timeline__body {
  padding-top: 0.25rem;
  max-width: 42rem;
}

.page-about .about-timeline__body h3 {
  font-family: var(--font-head);
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0 0 0.375rem;
  color: var(--ink);
}

.page-about .about-timeline__body p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--grey-700);
  margin: 0;
}

.page-about .about-milestones__image {
  margin-top: 2.5rem;
  border-left: 4px solid var(--green);
  padding-left: 1rem;
}

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

/* ===== 团队与实力 ===== */
.page-about .about-team {
  background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue) 100%);
  color: var(--white);
  padding: 3.5rem 0;
}

.page-about .about-team__inner {
  display: grid;
  gap: 2.5rem;
}

.page-about .about-team .section-label {
  color: var(--gold);
}

.page-about .about-team h2 {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 900;
  color: var(--white);
  margin: 0.5rem 0 1rem;
}

.page-about .about-team__lead {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.92);
  margin: 0 0 1.5rem;
}

.page-about .about-team__list {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-about .about-team__list li {
  position: relative;
  padding: 0.75rem 1rem 0.75rem 1.25rem;
  background: rgba(255, 255, 255, 0.08);
  border-left: 3px solid var(--green-bright);
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.95);
}

.page-about .about-team__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .about-team__actions .btn {
  font-family: var(--font-head);
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  padding: 0.75rem 1.5rem;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: background var(--transition), color var(--transition), transform var(--transition), border-color var(--transition);
}

.page-about .about-team__actions .btn-primary {
  background: var(--green-bright);
  color: var(--white);
  border: 1px solid var(--green-bright);
}

.page-about .about-team__actions .btn-primary:hover {
  background: var(--green);
  border-color: var(--green);
  transform: translateY(-2px);
}

.page-about .about-team__actions .btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.65);
}

.page-about .about-team__actions .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--white);
  transform: translateY(-2px);
}

.page-about .about-team__image {
  border: 2px solid rgba(255, 255, 255, 0.25);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

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

/* ===== 资质与合作 ===== */
.page-about .about-credential {
  padding: 3.5rem 0 4rem;
  background: var(--white);
}

.page-about .about-credential .about-section-head {
  margin-bottom: 2rem;
}

.page-about .about-credential__grid {
  display: grid;
  gap: 1.5rem;
}

.page-about .about-credential__item {
  background: var(--grey-050);
  padding: 1.75rem 1.5rem;
  border-top: 3px solid transparent;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.page-about .about-credential__item:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(17, 17, 17, 0.08);
}

.page-about .about-credential__item h3 {
  font-family: var(--font-head);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0.5rem 0 0.5rem;
}

.page-about .about-credential__item p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--grey-700);
  line-height: 1.7;
  margin: 0;
}

.page-about .about-credential__item .tag,
.page-about .about-credential__item .tag-accent,
.page-about .about-credential__item .tag-gold {
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.05em;
}

.page-about .about-credential__note {
  margin-top: 2.5rem;
  padding: 1.25rem 1.5rem;
  background: var(--gold-soft);
  border-left: 4px solid var(--gold);
}

.page-about .about-credential__note p {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--grey-700);
  margin: 0;
}

.page-about .about-credential__note a {
  color: var(--green);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--green);
  transition: color var(--transition), border-color var(--transition);
}

.page-about .about-credential__note a:hover {
  color: var(--blue);
  border-color: var(--blue);
}

/* ===== 桌面端 ===== */
@media (min-width: 1024px) {
  .page-about .breadcrumb-wrap {
    padding: 1rem 0 0;
  }

  .page-about .about-story {
    padding: 4.5rem 0 5rem;
  }

  .page-about .about-story__inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 4rem;
    align-items: center;
  }

  .page-about .about-story__text h1 {
    font-size: 3.5rem;
    line-height: 1.1;
  }

  .page-about .about-story__lead {
    font-size: 1.25rem;
  }

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

  .page-about .about-story__fact {
    padding: 1.25rem 1rem;
  }

  .page-about .about-story__fact-num {
    font-size: 1.375rem;
  }

  .page-about .about-story__fact-label {
    font-size: 0.8125rem;
  }

  .page-about .about-story__image {
    transform: translateX(8px);
  }

  .page-about .about-story__image::after {
    right: -8px;
    top: 16px;
    width: 32px;
    height: 32px;
  }

  .page-about .about-story__image img {
    box-shadow: 14px 14px 0 rgba(30, 140, 90, 0.16);
  }

  .page-about .about-grassline-wrap {
    height: 64px;
  }

  .page-about .about-milestones {
    padding: 5rem 0;
  }

  .page-about .about-section-head h2 {
    font-size: 2.75rem;
  }

  .page-about .about-timeline {
    margin-top: 3rem;
  }

  .page-about .about-timeline::before {
    left: 4rem;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 8rem 1fr;
    gap: 2.5rem;
    padding-bottom: 2.5rem;
  }

  .page-about .about-timeline__index {
    width: 3.5rem;
    height: 3.5rem;
    font-size: 0.9375rem;
  }

  .page-about .about-timeline__time {
    font-size: 0.8125rem;
  }

  .page-about .about-timeline__body h3 {
    font-size: 1.25rem;
  }

  .page-about .about-timeline__body p {
    font-size: 0.9375rem;
  }

  .page-about .about-milestones__image {
    margin-top: 3.5rem;
  }

  .page-about .about-team {
    padding: 5rem 0;
  }

  .page-about .about-team__inner {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
  }

  .page-about .about-team h2 {
    font-size: 2.75rem;
  }

  .page-about .about-credential {
    padding: 5rem 0 5.5rem;
  }

  .page-about .about-credential__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
}