.page-about {
  --about-nav: #0A1D3C;
  --about-moss-light: rgba(74, 106, 58, 0.18);
  background: var(--cream);
  color: var(--graphite);
  overflow-x: clip;
}

.page-about .about-hero {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: flex-end;
  background: var(--navy);
  isolation: isolate;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 46px), 0 100%);
}

.page-about .about-hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
  overflow: hidden;
}

.page-about .about-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 36%;
  opacity: 0.4;
  filter: saturate(0.86) contrast(1.08);
  display: block;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(10, 29, 60, 0.2) 0%, rgba(10, 29, 60, 0.1) 44%, rgba(10, 29, 60, 0.95) 100%);
}

.page-about .about-hero-crumb {
  position: absolute;
  top: 24px;
  left: var(--gutter);
  z-index: 4;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: rgba(245, 239, 228, 0.74);
  font-family: var(--font-num);
}

.page-about .about-hero-crumb a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 225, 70, 0.4);
  transition: border-color 0.3s ease, color 0.3s ease;
}

.page-about .about-hero-crumb a:hover,
.page-about .about-hero-crumb a:focus {
  border-color: var(--lime);
  color: var(--lime);
}

.page-about .about-hero-crumb span[aria-current="page"] {
  color: rgba(245, 239, 228, 0.9);
}

.page-about .about-hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-top: 22vh;
  padding-bottom: clamp(64px, 9vh, 104px);
  color: var(--cream);
}

.page-about .about-hero .about-hero-kicker {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--lime);
  border-left: 4px solid var(--lime);
  padding-left: 14px;
  margin-bottom: 22px;
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(52px, 9.6vw, 128px);
  font-weight: 900;
  line-height: 0.96;
  letter-spacing: -0.04em;
  color: var(--cream);
  text-shadow: 0 6px 24px rgba(10, 29, 60, 0.5);
}

.page-about .about-hero-sub {
  margin: 18px 0 0;
  font-family: var(--font-ser);
  font-size: clamp(20px, 3.2vw, 36px);
  font-weight: 600;
  color: rgba(245, 239, 228, 0.92);
  letter-spacing: 0.02em;
}

.page-about .about-hero-lead {
  max-width: 640px;
  margin: 28px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(245, 239, 228, 0.8);
  font-weight: 400;
}

.page-about .about-hero-scroll {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 42px;
  font-size: 15px;
  color: var(--cream);
  text-decoration: none;
  font-family: var(--font-body);
  letter-spacing: 0.06em;
  transition: opacity 0.3s ease;
}

.page-about .about-hero-scroll:hover,
.page-about .about-hero-scroll:focus {
  opacity: 0.72;
}

.page-about .about-hero-scroll-line {
  width: 56px;
  height: 2px;
  background: var(--lime);
  position: relative;
  overflow: hidden;
}

.page-about .about-hero-scroll-line::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 10px;
  height: 2px;
  background: var(--orange);
  animation: about-scroll-pulse 1.6s ease-in-out infinite;
}

@keyframes about-scroll-pulse {
  0%, 100% {
    transform: translateX(0);
    opacity: 1;
  }
  50% {
    transform: translateX(-32px);
    opacity: 0.2;
  }
}

/* 品牌理念 */
.page-about .about-belief {
  position: relative;
  background: var(--cream);
  padding-top: clamp(76px, 10vw, 128px);
  padding-bottom: clamp(72px, 9vw, 112px);
}

.page-about .about-belief-head {
  margin-bottom: clamp(40px, 6vw, 72px);
}

.page-about .about-belief .kicker,
.page-about .about-numbers .kicker,
.page-about .about-milestones .kicker {
  color: var(--terra);
  border-left: 4px solid var(--terra);
  padding-left: 14px;
  margin-bottom: 16px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.page-about .about-belief .section-title,
.page-about .about-numbers .section-title,
.page-about .about-milestones .section-title {
  color: var(--navy);
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(28px, 4.6vw, 52px);
  line-height: 1.16;
}

.page-about .about-belief-grid {
  display: grid;
  gap: 48px;
}

.page-about .about-belief-intro {
  max-width: 680px;
}

.page-about .about-belief-quote {
  font-family: var(--font-ser);
  font-size: clamp(20px, 2.8vw, 30px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--navy);
  margin: 0 0 22px;
}

.page-about .about-belief-paragraph {
  font-size: 16px;
  line-height: 1.9;
  color: var(--rockey);
  margin: 0;
}

.page-about .about-belief-pillars {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.page-about .about-pillar {
  display: flex;
  gap: 20px;
  background: rgba(138, 159, 181, 0.08);
  border: 2px solid rgba(10, 29, 60, 0.14);
  padding: 22px 24px;
  position: relative;
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-pillar:hover,
.page-about .about-pillar:focus-within {
  border-color: var(--navy);
  transform: translateY(-3px);
  box-shadow: 10px 10px 0 rgba(10, 29, 60, 0.1);
}

.page-about .about-pillar-index {
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 700;
  color: var(--terra);
  letter-spacing: 0.08em;
  padding-top: 4px;
  flex-shrink: 0;
}

.page-about .about-pillar-body {
  flex: 1;
}

.page-about .about-pillar-title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 8px;
}

.page-about .about-pillar-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--rockey);
  margin: 0;
}

/* 贵州渊源 */
.page-about .about-roots {
  position: relative;
  background: var(--navy);
  color: var(--cream);
  padding-top: clamp(80px, 10vw, 132px);
  padding-bottom: clamp(80px, 11vw, 148px);
  clip-path: polygon(0 44px, 100% 0, 100% 100%, 0 calc(100% - 44px));
  margin-top: 0;
}

.page-about .about-roots::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 260px;
  height: 168px;
  opacity: 0.1;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(45deg, transparent 0 10px, var(--cream) 10px 12px),
    repeating-linear-gradient(-45deg, transparent 0 10px, var(--cream) 10px 12px);
  background-size: 84px 84px, 84px 84px;
  background-position: 0 0, 0 42px;
}

.page-about .about-roots-head {
  margin-bottom: clamp(40px, 6vw, 72px);
}

.page-about .about-roots .kicker,
.page-about .about-credentials .kicker,
.page-about .about-closing .kicker {
  color: var(--lime);
  border-left: 4px solid var(--lime);
  padding-left: 14px;
  margin-bottom: 16px;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.page-about .about-roots .section-title,
.page-about .about-credentials .section-title,
.page-about .about-closing .section-title {
  color: var(--cream);
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(28px, 4.6vw, 52px);
  line-height: 1.16;
}

.page-about .about-roots-grid {
  display: grid;
  gap: 48px;
}

.page-about .about-roots-copy {
  max-width: 640px;
}

.page-about .about-roots-copy > p {
  font-size: 16px;
  line-height: 1.9;
  color: rgba(245, 239, 228, 0.86);
  margin: 0 0 18px;
}

.page-about .about-roots-note {
  display: flex;
  gap: 16px;
  border: 2px solid rgba(184, 225, 70, 0.38);
  border-left: 6px solid var(--lime);
  padding: 20px 22px;
  margin-top: 32px;
  background: rgba(184, 225, 70, 0.06);
}

.page-about .about-roots-note-mark {
  font-family: var(--font-ser);
  font-size: 22px;
  color: var(--lime);
  line-height: 1;
  flex-shrink: 0;
}

.page-about .about-roots-note p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 239, 228, 0.92);
  margin: 0;
}

.page-about .about-roots-stats {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.page-about .about-root-stat {
  border-bottom: 2px solid rgba(245, 239, 228, 0.22);
  padding-bottom: 26px;
}

.page-about .about-root-stat--alt {
  margin-left: 28px;
  border-bottom-color: var(--lime);
}

.page-about .about-root-stat-value {
  display: block;
  font-family: var(--font-ser);
  font-weight: 700;
  font-size: clamp(60px, 8vw, 108px);
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--cream);
  margin-bottom: 12px;
}

.page-about .about-root-stat--alt .about-root-stat-value {
  color: var(--lime);
}

.page-about .about-root-stat-label {
  display: block;
  font-size: 14px;
  letter-spacing: 0.16em;
  color: rgba(245, 239, 228, 0.68);
  text-transform: uppercase;
  font-family: var(--font-num);
}

/* 数字与足迹 */
.page-about .about-numbers {
  background: #F2EBDF;
  padding-top: clamp(76px, 10vw, 128px);
  padding-bottom: clamp(76px, 10vw, 128px);
}

.page-about .about-numbers-head {
  margin-bottom: clamp(40px, 5vw, 64px);
  max-width: 760px;
}

.page-about .about-numbers-desc {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rockey);
}

.page-about .about-numbers-grid {
  display: grid;
  gap: 24px;
  align-items: start;
}

.page-about .about-number-card {
  position: relative;
  background: var(--cream);
  border: 3px solid var(--navy);
  padding: 28px 26px 30px;
  box-shadow: 8px 8px 0 rgba(10, 29, 60, 0.08);
  transition: background-color 0.35s ease, transform 0.35s ease, box-shadow 0.35s ease;
}

.page-about .about-number-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 52px;
  height: 8px;
  background: var(--orange);
  transform: skewX(-18deg);
  transform-origin: right top;
  opacity: 0.9;
  transition: width 0.3s ease;
}

.page-about .about-number-card:hover,
.page-about .about-number-card:focus-within {
  background: var(--navy);
  transform: translateY(-4px);
  box-shadow: 14px 14px 0 rgba(10, 29, 60, 0.16);
}

.page-about .about-number-card:hover::after,
.page-about .about-number-card:focus-within::after {
  width: 88px;
  background: var(--lime);
}

.page-about .about-number-card-value {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(40px, 5vw, 68px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--navy);
  margin-bottom: 14px;
  transition: color 0.35s ease;
}

.page-about .about-number-card:hover .about-number-card-value,
.page-about .about-number-card:focus-within .about-number-card-value {
  color: var(--lime);
}

.page-about .about-number-card-label {
  display: block;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--graphite);
  margin-bottom: 12px;
  transition: color 0.35s ease;
}

.page-about .about-number-card:hover .about-number-card-label,
.page-about .about-number-card:focus-within .about-number-card-label {
  color: var(--cream);
}

.page-about .about-number-card-desc {
  font-size: 13px;
  line-height: 1.75;
  color: var(--rockey);
  margin: 0;
  transition: color 0.35s ease;
}

.page-about .about-number-card:hover .about-number-card-desc,
.page-about .about-number-card:focus-within .about-number-card-desc {
  color: rgba(245, 239, 228, 0.82);
}

/* 里程碑 */
.page-about .about-milestones {
  position: relative;
  background: #EAE1D3;
  padding-top: clamp(76px, 10vw, 128px);
  padding-bottom: clamp(76px, 10vw, 128px);
}

.page-about .about-milestones-head {
  max-width: 800px;
  margin-bottom: 56px;
}

.page-about .about-milestones-desc {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rockey);
}

.page-about .about-timeline {
  position: relative;
  display: flex;
  flex-direction: column;
}

.page-about .about-timeline-item {
  position: relative;
  padding-left: 68px;
  padding-bottom: 44px;
  min-height: 180px;
}

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

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--navy);
  opacity: 0.22;
}

.page-about .about-timeline-item:last-child::before {
  height: 44px;
  bottom: auto;
}

.page-about .about-timeline-node {
  position: absolute;
  left: 0;
  top: 0;
  width: 46px;
  height: 46px;
  background: var(--cream);
  border: 3px solid var(--navy);
  transform: rotate(45deg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 4px 4px 0 rgba(10, 29, 60, 0.12);
}

.page-about .about-timeline-node-dot {
  width: 12px;
  height: 12px;
  background: var(--terra);
  transform: rotate(-45deg);
  display: block;
  transition: background-color 0.3s ease;
}

.page-about .about-timeline-item:hover .about-timeline-node-dot,
.page-about .about-timeline-item:focus-within .about-timeline-node-dot {
  background: var(--lime);
}

.page-about .about-timeline-content {
  background: rgba(255, 255, 255, 0.42);
  border: 2px solid rgba(10, 29, 60, 0.12);
  padding: 24px 22px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.page-about .about-timeline-item:hover .about-timeline-content,
.page-about .about-timeline-item:focus-within .about-timeline-content {
  border-color: var(--navy);
  box-shadow: 10px 10px 0 rgba(10, 29, 60, 0.1);
  transform: translateY(-3px);
}

.page-about .about-timeline-version {
  display: inline-block;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 13px;
  color: var(--cream);
  background: var(--navy);
  padding: 5px 12px;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.page-about .about-timeline-title {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  color: var(--navy);
  margin: 0 0 10px;
}

.page-about .about-timeline-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--rockey);
  margin: 0;
}

.page-about .about-milestone-media {
  max-width: 460px;
  margin: 48px 0 0 auto;
}

.page-about .about-milestone-media img {
  width: 100%;
  height: auto;
  display: block;
  border: 4px solid var(--navy);
  box-shadow: 12px 12px 0 rgba(10, 29, 60, 0.18);
}

/* 资质与荣誉 */
.page-about .about-credentials {
  position: relative;
  background: var(--navy);
  color: var(--cream);
  padding-top: clamp(80px, 10vw, 132px);
  padding-bottom: clamp(80px, 10vw, 132px);
  overflow: hidden;
}

.page-about .about-credentials::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--orange) 0 18%, var(--lime) 18% 24%, var(--cream) 24% 100%);
}

.page-about .about-credentials-head {
  margin-bottom: clamp(40px, 6vw, 72px);
}

.page-about .about-credentials-layout {
  display: grid;
  gap: 48px;
}

.page-about .about-credentials-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-about .about-credential {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: rgba(245, 239, 228, 0.06);
  border: 2px solid rgba(245, 239, 228, 0.14);
  padding: 22px 24px;
  transition: border-color 0.3s ease, background-color 0.3s ease, transform 0.3s ease;
}

.page-about .about-credential:hover,
.page-about .about-credential:focus-within {
  border-color: var(--lime);
  background: rgba(184, 225, 70, 0.08);
  transform: translateX(4px);
}

.page-about .about-credential-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  height: 52px;
  padding: 0 10px;
  border: 3px solid var(--lime);
  color: var(--lime);
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  transform: skewX(-8deg);
  flex-shrink: 0;
}

.page-about .about-credential-body {
  flex: 1;
}

.page-about .about-credential-title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--cream);
  margin: 0 0 8px;
}

.page-about .about-credential-text {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 239, 228, 0.74);
  margin: 0;
}

.page-about .about-credentials-media {
  align-self: center;
}

.page-about .about-credentials-media img {
  width: 100%;
  height: auto;
  display: block;
  border: 4px solid var(--lime);
  box-shadow: 14px 14px 0 rgba(184, 225, 70, 0.16);
}

/* 收束 */
.page-about .about-closing {
  position: relative;
  background: var(--navy);
  color: var(--cream);
  overflow: hidden;
  padding-top: clamp(88px, 12vw, 168px);
  padding-bottom: clamp(88px, 12vw, 168px);
}

.page-about .about-closing-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .about-closing-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  opacity: 0.3;
  display: block;
}

.page-about .about-closing-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(10, 29, 60, 0.76) 0%, rgba(10, 29, 60, 0.88) 100%);
}

.page-about .about-closing-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
}

.page-about .about-closing .kicker {
  display: flex;
  align-items: center;
  justify-content: center;
  border-left: none;
  padding-left: 0;
  gap: 0;
}

.page-about .about-closing .kicker::before,
.page-about .about-closing .kicker::after {
  content: "";
  width: 40px;
  height: 2px;
  background: var(--lime);
  display: inline-block;
  opacity: 0.6;
}

.page-about .about-closing .kicker::before {
  margin-right: 14px;
}

.page-about .about-closing .kicker::after {
  margin-left: 14px;
}

.page-about .about-closing-text {
  max-width: 560px;
  margin: 20px auto 0;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(245, 239, 228, 0.82);
}

.page-about .about-closing-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 42px;
}

.page-about .about-closing .btn--ghost {
  border-color: var(--cream);
  color: var(--cream);
}

.page-about .about-closing .btn--ghost:hover,
.page-about .about-closing .btn--ghost:focus {
  border-color: var(--lime);
  color: var(--lime);
}

.page-about .about-closing-contact {
  margin: 36px 0 0;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: rgba(245, 239, 228, 0.6);
}

/* 响应式：平板及以上 */
@media (min-width: 760px) {
  .page-about .about-belief-grid {
    grid-template-columns: 1fr 1.4fr;
    gap: clamp(40px, 6vw, 88px);
    align-items: start;
  }

  .page-about .about-roots-grid {
    grid-template-columns: 1fr 0.9fr;
    gap: clamp(48px, 6vw, 88px);
    align-items: center;
  }

  .page-about .about-root-stat--alt {
    margin-left: 56px;
  }

  .page-about .about-numbers-grid {
    grid-template-columns: 1fr 1fr;
    column-gap: clamp(28px, 4vw, 56px);
    row-gap: 48px;
  }

  .page-about .about-number-card--shift {
    margin-top: 64px;
  }

  .page-about .about-credentials-layout {
    grid-template-columns: 1.15fr 0.85fr;
    gap: clamp(48px, 6vw, 88px);
    align-items: center;
  }
}

/* 响应式：桌面 */
@media (min-width: 1024px) {
  .page-about .about-hero {
    min-height: 78vh;
  }

  .page-about .about-hero-crumb {
    top: 32px;
  }

  .page-about .about-timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-timeline::before {
    content: "";
    position: absolute;
    top: 20px;
    left: 8%;
    right: 8%;
    height: 4px;
    background: var(--navy);
    opacity: 0.3;
    transform: skewY(-1.2deg);
  }

  .page-about .about-timeline-item {
    padding: 68px 24px 0;
    min-height: 0;
  }

  .page-about .about-timeline-item::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 20px;
    bottom: auto;
    width: auto;
    height: 3px;
    background: var(--terra);
    opacity: 0.34;
  }

  .page-about .about-timeline-item:last-child::before {
    height: 3px;
  }

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

  .page-about .about-timeline-node {
    top: 0;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
  }

  .page-about .about-timeline-node-dot {
    transform: rotate(-45deg);
  }

  .page-about .about-timeline-content {
    height: 100%;
  }

  .page-about .about-milestone-media {
    max-width: 420px;
    margin: 64px 48px 0 auto;
  }

  .page-about .about-credentials-media img {
    max-width: 440px;
    margin-left: auto;
  }
}