.page-about {
  --about-deep: #0D3410;
  --about-green: #1B5E20;
  --about-gold: #FFB300;
  --about-cream: #F7F5F0;
  --about-ink: #2D2D2D;
  --about-soft: #5D5D5D;
  --about-glass: rgba(255, 255, 255, 0.82);
  --about-shadow: 0 24px 60px rgba(13, 52, 16, 0.16);
  background: var(--about-cream);
}

.page-about .si-container {
  max-width: var(--si-container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.page-about .about-context {
  background: var(--about-deep);
  color: rgba(255, 255, 255, 0.6);
  border-bottom: 1px solid rgba(255, 179, 0, 0.35);
  padding: 0.75rem 0;
}

.page-about .about-context .si-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.page-about .about-context a {
  color: var(--si-gold-soft);
  text-decoration: none;
  font-size: 0.78rem;
  transition: color 0.3s var(--si-ease);
}

.page-about .about-context a:hover {
  color: #fff;
}

.page-about .about-context-note {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}

/* ===================== 首屏英雄区 ===================== */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 3rem 0 4rem;
  color: #fff;
  background: linear-gradient(135deg, var(--about-deep) 0%, var(--about-green) 68%, rgba(0, 0, 0, 0) 68%), var(--about-deep);
  border-bottom: 5px solid var(--about-gold);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, rgba(255, 255, 255, 0.045) 0 2px, transparent 2px 18px);
  pointer-events: none;
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2.5rem;
}

.page-about .about-hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.2rem;
}

.page-about .about-hero-kicker {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--si-gold-soft);
  border-left: 3px solid var(--about-gold);
  padding-left: 0.75rem;
  font-weight: 600;
}

.page-about .about-hero-title {
  margin: 0;
  font-family: var(--si-heading-font);
  font-size: clamp(2.65rem, 7vw, 5.2rem);
  line-height: 0.94;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #ffffff;
  max-width: 9ch;
}

.page-about .about-hero-title em {
  font-style: normal;
  color: var(--about-gold);
}

.page-about .about-hero-lead {
  max-width: 34rem;
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.84);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.35rem;
}

.page-about .about-hero-actions .si-btn-outline {
  border-color: rgba(255, 255, 255, 0.55);
  color: #ffffff;
}

.page-about .about-hero-actions .si-btn-outline:hover {
  border-color: var(--about-gold);
  color: var(--about-gold);
}

.page-about .about-hero-figure {
  margin: 0;
  align-self: end;
}

.page-about .about-hero-img-frame {
  background: var(--about-gold);
  padding: 0.45rem;
  transform: rotate(1.5deg);
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.38);
  transition: transform 0.45s var(--si-ease);
}

.page-about .about-hero-figure:hover .about-hero-img-frame {
  transform: rotate(0deg) translateY(-6px);
}

.page-about .about-hero-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .about-hero-figcap {
  margin-top: 0.8rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
}

/* ===================== 章节通用头 ===================== */
.page-about .about-section-head {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 2.2rem;
}

.page-about .about-section-head-center {
  text-align: center;
  justify-items: center;
}

.page-about .about-page-title {
  margin: 0;
  font-family: var(--si-heading-font);
  font-size: clamp(2.1rem, 4.6vw, 3.8rem);
  line-height: 1.02;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: var(--about-ink);
}

.page-about .about-section-sub {
  margin: 0;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--about-soft);
}

.page-about .about-section-sub-light {
  color: rgba(255, 255, 255, 0.6);
}

.page-about .about-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--about-green);
  color: var(--si-gold-soft);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 0 10px 24px rgba(27, 94, 32, 0.24);
}

.page-about .about-index-light {
  background: var(--about-gold);
  color: var(--about-deep);
  box-shadow: 0 10px 24px rgba(255, 179, 0, 0.28);
}

/* ===================== 品牌故事 ===================== */
.page-about .about-story {
  padding: 4.5rem 0;
  position: relative;
}

.page-about .about-story::before {
  content: "";
  position: absolute;
  right: 0;
  top: 2rem;
  width: 18rem;
  height: 18rem;
  background: radial-gradient(circle, rgba(248, 187, 208, 0.36) 0%, rgba(248, 187, 208, 0) 68%);
  pointer-events: none;
}

.page-about .about-story-layout {
  display: grid;
  gap: 2.4rem;
  position: relative;
  z-index: 1;
}

.page-about .about-story-body {
  max-width: 46rem;
}

.page-about .about-story-lead {
  font-size: 1.12rem;
  line-height: 1.8;
  color: var(--about-ink);
  margin-top: 0;
}

.page-about .about-story-body p:not(.about-story-lead) {
  color: var(--about-soft);
  line-height: 1.8;
  font-size: 0.98rem;
}

.page-about .about-story-quote {
  margin: 2.2rem 0 0;
  padding: 1.2rem 1.4rem;
  border-left: 4px solid var(--about-gold);
  background: rgba(255, 179, 0, 0.08);
  font-family: var(--si-heading-font);
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  line-height: 1.4;
  color: var(--about-green);
  text-transform: none;
}

/* ===================== 数据能力 ===================== */
.page-about .about-data {
  position: relative;
  overflow: hidden;
  padding: 4.5rem 0;
  background: var(--about-deep);
  color: #fff;
}

.page-about .about-data-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-about .about-data-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(13, 52, 16, 0.95) 0%, rgba(27, 94, 32, 0.82) 100%);
}

.page-about .about-data-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  filter: saturate(1.1) contrast(1.08);
}

.page-about .about-data-head {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0.4rem;
  margin-bottom: 2rem;
}

.page-about .about-data .about-page-title {
  color: #ffffff;
}

.page-about .about-data-card {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2rem;
  padding: 1.8rem;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--about-shadow);
}

.page-about .about-data-card-copy {
  color: #fff;
}

.page-about .about-data-card-title {
  margin: 0 0 1rem;
  font-family: var(--si-heading-font);
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  color: var(--si-gold-soft);
}

.page-about .about-data-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-about .about-data-list li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.94rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.86);
}

.page-about .about-data-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.55rem;
  height: 0.1rem;
  background: var(--about-gold);
}

.page-about .about-data-list strong {
  color: #fff;
  font-weight: 600;
}

.page-about .about-data-facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.8rem;
  margin: 0;
}

.page-about .about-fact {
  padding: 1rem 0.9rem;
  background: var(--si-gold);
  color: var(--about-deep);
  display: grid;
  gap: 0.2rem;
  clip-path: polygon(0 0, 100% 0, calc(100% - 1rem) 100%, 0 100%);
}

.page-about .about-fact dt {
  font-family: var(--si-heading-font);
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  line-height: 1;
  letter-spacing: 0.02em;
}

.page-about .about-fact dd {
  margin: 0;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
}

/* ===================== 里程碑时间轴 ===================== */
.page-about .about-milestones {
  padding: 4.5rem 0;
  background: var(--about-cream);
}

.page-about .about-timeline-wrap {
  position: relative;
}

.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 2rem;
  padding-left: 2rem;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 0.6rem;
  top: 0.2rem;
  bottom: 0.2rem;
  width: 2px;
  background: linear-gradient(180deg, var(--si-gold) 0%, var(--si-green-mid) 60%, rgba(45, 45, 45, 0.14) 100%);
}

.page-about .about-timeline-item {
  position: relative;
}

.page-about .about-timeline-dot {
  position: absolute;
  left: calc(-2rem + 0.6rem);
  transform: translateX(-50%);
  top: 0.2rem;
  min-width: 3.4rem;
  padding: 0.28rem 0.5rem;
  background: var(--si-spring);
  color: var(--about-deep);
  font-family: var(--si-body-font);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
  white-space: nowrap;
  border-radius: 99px;
  border: 2px solid var(--about-cream);
}

.page-about .about-timeline-card {
  background: #ffffff;
  border: 1px solid var(--si-border);
  border-top: 3px solid var(--si-gold);
  padding: 1.4rem 1.5rem;
  box-shadow: 0 14px 40px rgba(13, 52, 16, 0.07);
  transition: transform 0.35s var(--si-ease), box-shadow 0.35s var(--si-ease);
}

.page-about .about-timeline-card:hover {
  transform: translateY(-4px) rotate(-0.3deg);
  box-shadow: 0 22px 50px rgba(13, 52, 16, 0.14);
}

.page-about .about-timeline-card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--si-heading-font);
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  color: var(--about-green);
  text-transform: none;
}

.page-about .about-timeline-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--about-soft);
}

.page-about .about-timeline-item:nth-child(1) .about-timeline-dot {
  background: var(--si-spring);
}

.page-about .about-timeline-item:nth-child(2) .about-timeline-dot {
  background: var(--si-summer);
}

.page-about .about-timeline-item:nth-child(3) .about-timeline-dot {
  background: var(--si-autumn);
  color: #fff;
}

.page-about .about-timeline-item:nth-child(4) .about-timeline-dot {
  background: var(--si-winter);
}

.page-about .about-timeline-item:nth-child(5) .about-timeline-dot {
  background: var(--si-gold);
}

/* ===================== 团队与文化 ===================== */
.page-about .about-team {
  padding: 4.5rem 0;
  background: #ffffff;
}

.page-about .about-team-grid {
  display: grid;
  gap: 3rem;
}

.page-about .about-team-copy p {
  color: var(--about-soft);
  line-height: 1.8;
  font-size: 0.98rem;
}

.page-about .about-team-lead {
  margin-top: 0;
}

.page-about .about-team-values {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-team-values li {
  position: relative;
  padding: 1rem 1.2rem;
  background: var(--about-cream);
  border-left: 4px solid var(--about-green);
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--about-soft);
}

.page-about .about-team-values li::before {
  content: "";
  position: absolute;
  right: 1rem;
  top: 1rem;
  width: 0.9rem;
  height: 0.55rem;
  background: var(--si-teal);
  opacity: 0.55;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}

.page-about .about-team-values strong {
  display: block;
  font-family: var(--si-heading-font);
  font-size: 1rem;
  letter-spacing: 0.03em;
  color: var(--about-green);
  margin-bottom: 0.2rem;
}

.page-about .about-team-culture {
  padding: 1.2rem 1.4rem;
  background: rgba(0, 191, 165, 0.08);
  border: 1px solid rgba(0, 191, 165, 0.24);
  color: var(--about-ink);
  font-weight: 500;
}

.page-about .about-team-visual {
  display: flex;
  justify-content: center;
}

.page-about .about-team-orbit {
  position: relative;
  margin: 0;
  width: min(80vw, 26rem);
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: visible;
  display: grid;
  place-items: center;
  background: var(--about-cream);
  box-shadow: inset 0 0 0 1px rgba(27, 94, 32, 0.14);
}

.page-about .about-team-orbit::before {
  content: "";
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  border: 1px dashed rgba(27, 94, 32, 0.28);
  pointer-events: none;
}

.page-about .about-team-orbit img {
  position: relative;
  z-index: 1;
  width: 76%;
  height: 76%;
  border-radius: 50%;
  object-fit: cover;
  aspect-ratio: 1;
  border: 5px solid var(--about-gold);
  box-shadow: 0 18px 40px rgba(13, 52, 16, 0.2);
}

.page-about .about-team-orbit figcaption {
  position: absolute;
  z-index: 2;
  bottom: 4%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--about-deep);
  color: #fff;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.45rem 1rem;
  white-space: nowrap;
}

.page-about .about-orbit-tag {
  position: absolute;
  z-index: 2;
  display: inline-block;
  background: #ffffff;
  border: 1px solid rgba(27, 94, 32, 0.35);
  color: var(--about-green);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.42rem 0.9rem;
  box-shadow: 0 6px 18px rgba(13, 52, 16, 0.12);
  white-space: nowrap;
}

.page-about .about-orbit-tag-top {
  top: 8%;
  left: 50%;
  transform: translateX(-50%);
}

.page-about .about-orbit-tag-right {
  top: 50%;
  right: 2%;
  transform: translateY(-50%);
}

.page-about .about-orbit-tag-bottom {
  bottom: 8%;
  left: 50%;
  transform: translateX(-50%);
}

.page-about .about-orbit-tag-left {
  top: 50%;
  left: 2%;
  transform: translateY(-50%);
}

/* ===================== 合作与联系 ===================== */
.page-about .about-contact {
  padding: 4.5rem 0;
  background: var(--about-cream);
}

.page-about .about-contact-card {
  background: var(--about-deep);
  color: #fff;
  padding: 2.2rem 1.8rem;
  border-left: 6px solid var(--about-gold);
  box-shadow: var(--about-shadow);
  display: grid;
  gap: 1.8rem;
}

.page-about .about-contact-head {
  display: grid;
  gap: 0.5rem;
}

.page-about .about-contact .about-page-title {
  color: #ffffff;
}

.page-about .about-contact-lead {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.7;
  font-size: 0.96rem;
}

.page-about .about-contact-channels {
  display: grid;
  gap: 0.9rem;
}

.page-about .about-channel {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 1rem 1.2rem;
}

.page-about .about-channel-label {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--si-gold-soft);
}

.page-about .about-channel-value {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.5;
  word-break: break-word;
}

.page-about .about-channel a.about-channel-value {
  text-decoration: none;
  color: var(--si-gold);
}

.page-about .about-channel a.about-channel-value:hover {
  text-decoration: underline;
}

.page-about .about-contact-note {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.56);
  border-left: 2px solid rgba(255, 179, 0, 0.5);
  padding-left: 0.9rem;
}

.page-about .about-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.page-about .about-contact-actions .si-btn-outline {
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

.page-about .about-contact-actions .si-btn-outline:hover {
  border-color: var(--about-gold);
  color: var(--about-gold);
}

/* ===================== 滚动显现兼容 ===================== */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero-img-frame,
  .page-about .about-timeline-card,
  .page-about .about-team-orbit,
  .page-about .about-contact-card {
    transform: none;
    transition: none;
  }
}

/* ===================== 中屏：平板 ===================== */
@media (min-width: 760px) {
  .page-about .about-hero {
    padding: 4.5rem 0 5.5rem;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: end;
    gap: 3rem;
  }

  .page-about .about-story-layout {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 4rem;
  }

  .page-about .about-data-card {
    grid-template-columns: 1.4fr 1fr;
    gap: 2.5rem;
    align-items: center;
    padding: 2.5rem;
  }

  .page-about .about-data-facts {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-team-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 3rem;
  }

  .page-about .about-contact-card {
    padding: 3rem;
  }

  .page-about .about-contact-channels {
    grid-template-columns: 1fr 1fr;
  }
}

/* ===================== 大屏：桌面 ===================== */
@media (min-width: 1040px) {
  .page-about .about-hero-title {
    max-width: 8ch;
  }

  .page-about .about-story {
    padding: 6.5rem 0;
  }

  .page-about .about-story-layout {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 5.5rem;
  }

  .page-about .about-data {
    padding: 6.5rem 0;
  }

  .page-about .about-data-card {
    padding: 3rem 3.2rem;
    gap: 3rem;
  }

  .page-about .about-data-facts {
    grid-template-columns: 1fr;
    gap: 0.9rem;
  }

  .page-about .about-milestones {
    padding: 6.5rem 0;
  }

  .page-about .about-timeline {
    padding-left: 0;
  }

  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .about-timeline-item {
    width: 50%;
    padding-right: 3.25rem;
    text-align: right;
    margin-left: 0;
  }

  .page-about .about-timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 3.25rem;
    text-align: left;
  }

  .page-about .about-timeline-dot {
    left: auto;
    transform: none;
    right: -1.7rem;
    top: 0.2rem;
  }

  .page-about .about-timeline-item:nth-child(even) .about-timeline-dot {
    right: auto;
    left: -1.7rem;
  }

  .page-about .about-timeline-card {
    display: inline-block;
    text-align: left;
  }

  .page-about .about-team {
    padding: 6rem 0;
  }

  .page-about .about-team-orbit {
    width: 30rem;
  }

  .page-about .about-contact {
    padding: 6rem 0;
  }

  .page-about .about-contact-card {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 2rem;
    padding: 3.2rem 3.5rem;
  }

  .page-about .about-contact-head {
    align-content: start;
  }

  .page-about .about-contact-note,
  .page-about .about-contact-actions {
    grid-column: 1 / -1;
  }
}