.page-about {
  background: var(--cream);
  color: var(--ink);
  overflow-x: hidden;
}

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

.page-about .breadcrumb-sep {
  padding: 0 6px;
  color: var(--teal);
  opacity: 0.7;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(18px, 3vw, 32px) 0 clamp(30px, 5vw, 58px);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -46%;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(15, 94, 99, 0.16) 0%, rgba(15, 94, 99, 0) 68%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero .container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 22px;
  margin-top: 14px;
}

.page-about .about-hero-title {
  font-size: clamp(38px, 9vw, 88px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-weight: 200;
  margin: 12px 0 0;
}

.page-about .about-hero-lead {
  max-width: 42ch;
  margin: 0;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 年份快跳 ---------- */
.page-about .year-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(26px, 4vw, 42px);
}

.page-about .year-pill {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--r-pill);
  background: var(--cream-soft);
  border: 1px solid var(--mist);
  color: var(--ink);
  font-size: 13px;
  text-decoration: none;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}

.page-about .year-pill .data {
  font-weight: 700;
  color: var(--indigo);
  font-size: 14px;
  transition: color var(--dur-fast) var(--ease);
}

.page-about .year-pill:hover,
.page-about .year-pill:focus-visible {
  background: var(--orange);
  border-color: var(--orange);
  transform: translateY(-2px);
}

.page-about .year-pill:hover .data,
.page-about .year-pill:focus-visible .data {
  color: var(--ink);
}

/* ---------- 概况条 ---------- */
.page-about .about-stats {
  background: var(--indigo);
  color: var(--cream);
  padding: clamp(22px, 3vw, 34px) 0;
}

.page-about .stats-row {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px 20px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-about .stat {
  display: grid;
  gap: 6px;
  padding-left: 14px;
  border-left: 2px solid rgba(255, 106, 43, 0.85);
}

.page-about .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.4vw, 24px);
  font-weight: 600;
  color: var(--cream-soft);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about .stat-label {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(246, 241, 228, 0.78);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  background: linear-gradient(180deg, var(--cream) 0%, var(--cream-soft) 100%);
}

.page-about .tl-list {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .tl-item {
  position: relative;
  background: var(--cream-soft);
  border-radius: var(--r-lg);
  padding: 22px 22px 24px 28px;
  box-shadow: 0 1px 0 rgba(14, 44, 79, 0.08);
  transition: background var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease);
  scroll-margin-top: 96px;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 4px;
  border-radius: var(--r-pill);
  background: var(--orange);
  opacity: 0.32;
  transition: opacity var(--dur-base) var(--ease);
}

.page-about .tl-item:hover {
  background: var(--sand);
}

.page-about .tl-item:hover::before,
.page-about .tl-item:focus-within::before {
  opacity: 1;
}

.page-about .tl-year {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 10px;
}

.page-about .tl-year-num {
  font-family: var(--font-mono);
  font-size: clamp(32px, 8vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--indigo);
}

.page-about .tl-note {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--teal);
  letter-spacing: 0.02em;
  margin-bottom: 10px;
}

.page-about .tl-title {
  font-size: clamp(18px, 3.2vw, 24px);
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 8px;
}

.page-about .tl-text {
  font-size: 15px;
  line-height: 1.75;
  margin: 0;
  color: var(--ink);
  opacity: 0.88;
  max-width: 56ch;
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  gap: 28px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .team-intro {
  font-size: 16px;
  line-height: 1.8;
  margin: 0;
  max-width: 54ch;
}

.page-about .ratio-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .ratio-row {
  display: grid;
  gap: 7px;
}

.page-about .ratio-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
}

.page-about .ratio-name {
  font-weight: 700;
}

.page-about .ratio-num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--indigo);
}

.page-about .ratio-track {
  height: 12px;
  border-radius: var(--r-pill);
  background: rgba(14, 44, 79, 0.1);
  overflow: hidden;
}

.page-about .ratio-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  transition: filter var(--dur-fast) var(--ease);
}

.page-about .ratio-fill--a {
  width: 61%;
  background: linear-gradient(90deg, var(--indigo), var(--teal));
}

.page-about .ratio-fill--b {
  width: 26%;
  background: linear-gradient(90deg, var(--teal), var(--ice));
}

.page-about .ratio-fill--c {
  width: 13%;
  background: var(--orange);
}

.page-about .ratio-desc {
  font-size: 13px;
  line-height: 1.65;
  margin: 0;
  opacity: 0.74;
  transition: opacity var(--dur-fast) var(--ease);
}

.page-about .ratio-row:hover .ratio-desc,
.page-about .ratio-row:focus-within .ratio-desc {
  opacity: 1;
}

.page-about .ratio-row:hover .ratio-fill {
  filter: brightness(1.14);
}

.page-about .process-box {
  margin-top: 26px;
  background: var(--cream-soft);
  border-radius: var(--r-lg);
  padding: 22px 22px 20px;
  border-left: 4px solid var(--teal);
}

.page-about .process-title {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 14px;
}

.page-about .process-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .process-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.65;
}

.page-about .process-key {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: 0.06em;
}

.page-about .process-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--teal);
  font-weight: 600;
}

.page-about .team-media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--teal);
}

.page-about .team-media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .media-caption {
  padding: 12px 16px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--cream);
  background: var(--indigo);
  margin: 0;
}

/* ---------- 数据能力 ---------- */
.page-about .data-grid {
  display: grid;
  gap: 28px;
}

.page-about .data-intro {
  font-size: 16px;
  line-height: 1.8;
  margin: 14px 0 0;
  max-width: 52ch;
}

.page-about .data-steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .data-step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-about .data-step-index {
  width: 34px;
  height: 34px;
  border-radius: var(--r-pill);
  display: grid;
  place-items: center;
  background: var(--teal);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}

.page-about .data-step-title {
  font-size: 16px;
  font-weight: 700;
  margin: 4px 0 6px;
}

.page-about .data-step-text {
  font-size: 14.5px;
  line-height: 1.72;
  margin: 0;
  opacity: 0.86;
}

.page-about .data-media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--indigo);
}

.page-about .data-media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .data-figures {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.page-about .data-figures li {
  background: var(--cream-soft);
  border: 1px solid var(--mist);
  border-radius: var(--r-md);
  padding: 16px 18px;
  display: grid;
  gap: 6px;
}

.page-about .fig-num {
  font-family: var(--font-mono);
  font-size: clamp(19px, 3vw, 26px);
  font-weight: 600;
  color: var(--indigo);
  line-height: 1.15;
}

.page-about .fig-label {
  font-size: 12.5px;
  line-height: 1.55;
  opacity: 0.75;
}

/* ---------- 运营地 ---------- */
.page-about .about-place {
  padding: clamp(30px, 5vw, 60px) 0;
  background: var(--cream-soft);
}

.page-about .place-inner {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-about .place-figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--indigo);
}

.page-about .place-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .place-title {
  font-size: clamp(24px, 4.4vw, 36px);
  font-weight: 700;
  line-height: 1.25;
  margin: 10px 0 12px;
  letter-spacing: -0.01em;
}

.page-about .place-text {
  font-size: 15.5px;
  line-height: 1.8;
  margin: 0;
  max-width: 48ch;
  opacity: 0.86;
}

.page-about .place-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 2px;
  transition: color var(--dur-fast) var(--ease);
}

.page-about .place-link:hover,
.page-about .place-link:focus-visible {
  color: var(--ember);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco .section-title {
  color: var(--cream-soft);
}

.page-about .about-eco .section-note {
  color: rgba(246, 241, 228, 0.72);
}

.page-about .about-eco .eyebrow {
  color: var(--orange);
}

.page-about .eco-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(24px, 4vw, 36px);
}

.page-about .eco-card {
  background: rgba(246, 241, 228, 0.06);
  border: 1px solid rgba(201, 216, 214, 0.22);
  border-radius: var(--r-lg);
  padding: 24px 22px;
  color: var(--cream);
  transition: background var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
}

.page-about .eco-card:hover {
  background: rgba(246, 241, 228, 0.1);
  border-color: rgba(255, 106, 43, 0.55);
}

.page-about .eco-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
  letter-spacing: -0.02em;
}

.page-about .eco-title {
  font-size: 17px;
  font-weight: 700;
  margin: 12px 0 8px;
  color: var(--cream-soft);
}

.page-about .eco-text {
  font-size: 14px;
  line-height: 1.75;
  margin: 0;
  color: rgba(246, 241, 228, 0.8);
}

.page-about .eco-foot {
  margin: clamp(22px, 3vw, 30px) 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(246, 241, 228, 0.8);
}

.page-about .eco-link {
  color: var(--green);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 212, 122, 0.55);
}

.page-about .eco-link:hover,
.page-about .eco-link:focus-visible {
  color: var(--cream-soft);
  border-bottom-color: var(--cream-soft);
}

/* ---------- 荣誉 ---------- */
.page-about .honor-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .honor-card {
  background: var(--sand);
  border-radius: var(--r-lg);
  padding: 26px 24px;
  outline: none;
  transition: background var(--dur-base) var(--ease), transform var(--dur-base) var(--ease);
}

.page-about .honor-card:hover,
.page-about .honor-card:focus-visible {
  background: var(--orange);
  transform: translateY(-3px);
}

.page-about .honor-year {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--teal);
  margin-bottom: 10px;
  transition: color var(--dur-base) var(--ease);
}

.page-about .honor-card:hover .honor-year,
.page-about .honor-card:focus-visible .honor-year {
  color: var(--ink);
}

.page-about .honor-name {
  font-size: clamp(19px, 3.2vw, 23px);
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 10px;
}

.page-about .honor-text {
  font-size: 14px;
  line-height: 1.75;
  margin: 0;
  opacity: 0.8;
  max-width: 44ch;
  transition: opacity var(--dur-base) var(--ease);
}

.page-about .honor-card:hover .honor-text,
.page-about .honor-card:focus-visible .honor-text {
  opacity: 1;
}

/* ---------- 站点信息 ---------- */
.page-about .info-grid {
  display: grid;
  gap: 28px;
}

.page-about .info-intro {
  font-size: 15.5px;
  line-height: 1.8;
  margin: 12px 0 0;
  max-width: 46ch;
}

.page-about .info-list {
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(14, 44, 79, 0.14);
}

.page-about .info-row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(14, 44, 79, 0.14);
}

.page-about .info-row dt {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--teal);
  font-weight: 600;
}

.page-about .info-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
}

.page-about .info-row dd a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid rgba(14, 44, 79, 0.3);
}

.page-about .info-row dd a:hover,
.page-about .info-row dd a:focus-visible {
  border-bottom-color: var(--orange);
}

.page-about .info-side {
  background: var(--cream-soft);
  border-radius: var(--r-lg);
  padding: 24px 22px;
  border-left: 4px solid var(--orange);
  align-self: start;
}

.page-about .info-side-title {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 14px;
}

.page-about .info-links {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .info-links a {
  display: block;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
  text-decoration: none;
  padding-left: 14px;
  position: relative;
  transition: color var(--dur-fast) var(--ease);
}

.page-about .info-links a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  transition: background var(--dur-fast) var(--ease);
}

.page-about .info-links a:hover,
.page-about .info-links a:focus-visible {
  color: var(--ember);
}

.page-about .info-links a:hover::before,
.page-about .info-links a:focus-visible::before {
  background: var(--orange);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .stats-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .eco-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .honor-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .info-row {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    align-items: end;
  }

  .page-about .about-hero-lead {
    font-size: 17px;
  }

  .page-about .tl-list {
    gap: 18px;
  }

  .page-about .tl-item {
    display: grid;
    grid-template-columns: 176px 168px minmax(0, 1fr);
    gap: 30px;
    align-items: start;
    padding: 30px 34px 32px 40px;
  }

  .page-about .tl-item::before {
    top: 30px;
    bottom: 30px;
  }

  .page-about .tl-year {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 0;
  }

  .page-about .tl-year-num {
    font-size: 56px;
  }

  .page-about .tl-note {
    margin: 4px 0 0;
    padding-top: 2px;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 400px);
    gap: 48px;
    align-items: start;
  }

  .page-about .data-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 440px);
    gap: 52px;
    align-items: center;
  }

  .page-about .place-inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 48px;
  }

  .page-about .info-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero-title {
    font-size: 92px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .year-pill,
  .page-about .tl-item,
  .page-about .ratio-fill,
  .page-about .eco-card,
  .page-about .honor-card,
  .page-about .info-links a {
    transition: none;
  }

  .page-about .honor-card:hover,
  .page-about .honor-card:focus-visible,
  .page-about .year-pill:hover,
  .page-about .year-pill:focus-visible {
    transform: none;
  }
}