.page-about {
  --about-step: 14px;
  --about-radius: 16px;
  --about-card-bg: rgba(14, 43, 34, 0.58);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(1.6rem, 5vw, 2.6rem) 0 clamp(2.2rem, 6vw, 4rem);
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(120% 90% at 90% -10%, rgba(200, 255, 61, 0.11), transparent 58%),
    radial-gradient(90% 80% at -5% 110%, rgba(232, 184, 92, 0.08), transparent 60%);
}

.page-about .about-hero .breadcrumbs {
  margin-bottom: clamp(1.4rem, 4vw, 2.4rem);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
  min-width: 0;
}

.page-about .about-hero__lead {
  min-width: 0;
}

.page-about .about-hero__lead .kicker {
  color: var(--lime);
  margin: 0 0 0.9rem;
}

.page-about .about-hero h1 {
  margin: 0 0 1.1rem;
  color: var(--bone);
}

.page-about .about-hero .lede {
  max-width: 58ch;
  margin: 0;
  color: rgba(244, 240, 230, 0.78);
  line-height: 1.85;
}

.page-about .about-hero__stats {
  display: grid;
  gap: 1.1rem;
  padding-left: 1.1rem;
  border-left: 2px solid var(--line-lime);
}

.page-about .about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.page-about .about-hero__stat .num {
  font-family: var(--font-num);
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
}

.page-about .about-hero__stat-label {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--moss);
  line-height: 1.6;
}

/* ---------- 索引 + 正文两列 ---------- */
.page-about .about-layout {
  display: grid;
  gap: 0;
  min-width: 0;
}

.page-about .about-flow {
  min-width: 0;
}

.page-about .about-index {
  padding: 1.2rem 0 0.6rem;
}

.page-about .about-index__title {
  margin: 0 0 0.7rem;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-about .about-index ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index li {
  min-width: 0;
}

.page-about .spy-link {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.45rem 0.6rem;
  border-left: 2px solid transparent;
  border-radius: 0 8px 8px 0;
  font-size: 0.85rem;
  color: rgba(244, 240, 230, 0.6);
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-index__no {
  font-family: var(--font-num);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--moss);
}

.page-about .spy-link:hover,
.page-about .spy-link:focus-visible {
  color: var(--bone);
  border-left-color: var(--line-lime);
  background: rgba(200, 255, 61, 0.05);
}

.page-about .spy-link[aria-current="true"] {
  color: var(--lime);
  border-left-color: var(--lime);
  background: rgba(200, 255, 61, 0.07);
}

.page-about .spy-link[aria-current="true"] .about-index__no {
  color: var(--gold);
}

/* ---------- 章节通用 ---------- */
.page-about .about-sec {
  padding: clamp(2rem, 5vw, 3.6rem) 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-sec__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.3rem;
  margin-bottom: clamp(1rem, 3vw, 1.6rem);
}

.page-about .about-sec__no {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 6vw, 2.9rem);
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: rgba(244, 240, 230, 0.2);
}

.page-about .about-sec__head .kicker {
  color: var(--moss);
  margin: 0;
}

.page-about .about-sec__head h2 {
  margin: 0;
  color: var(--bone);
}

.page-about .about-sec__body {
  min-width: 0;
}

.page-about .about-p {
  max-width: 64ch;
  margin: 0 0 1rem;
  color: rgba(244, 240, 230, 0.8);
  line-height: 1.9;
}

.page-about .about-p:last-child {
  margin-bottom: 0;
}

/* ---------- 坐标定义表 ---------- */
.page-about .about-coord {
  display: grid;
  gap: 0.9rem;
  margin: 1.6rem 0 0;
  padding: 0;
}

.page-about .about-coord > div {
  padding-top: 0.7rem;
  border-top: 1px solid var(--line);
}

.page-about .about-coord dt {
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--moss);
}

.page-about .about-coord dd {
  margin: 0.3rem 0 0;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--bone);
}

/* ---------- 图 ---------- */
.page-about .about-figure {
  position: relative;
  margin: clamp(1.4rem, 4vw, 2.2rem) 0 0;
  border-radius: 18px;
  overflow: hidden;
  background: var(--ink-2);
}

.page-about .about-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 18px;
}

.page-about .about-figure--land img {
  aspect-ratio: 3 / 2;
}

.page-about .about-figure--square img {
  aspect-ratio: 1 / 1;
}

.page-about .about-figure .media__caption {
  margin: 0;
  padding: 0.7rem 0.9rem;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--moss);
  background: rgba(4, 17, 12, 0.82);
}

/* ---------- 生产方法 ---------- */
.page-about .about-steps {
  display: grid;
  gap: 1rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-steps__item {
  position: relative;
  padding: 1.1rem 1.1rem 1.2rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--about-radius);
  background: var(--about-card-bg);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-steps__item:hover {
  border-color: var(--line-lime);
  transform: translateY(-2px);
}

.page-about .about-steps__no {
  display: block;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--gold);
  margin-bottom: 0.4rem;
}

.page-about .about-steps__item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--bone);
}

.page-about .about-steps__item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(244, 240, 230, 0.74);
}

/* ---------- 时间线 ---------- */
.page-about .about-tl {
  position: relative;
  display: grid;
  gap: 0.75rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-tl__item {
  position: relative;
  margin-left: 0;
  padding: 0.9rem 1rem 0.95rem 1.7rem;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(14, 43, 34, 0.7), rgba(7, 26, 20, 0.45));
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: 0.6rem;
  top: 1.28rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(232, 184, 92, 0.16);
}

.page-about .about-tl__item:hover,
.page-about .about-tl__item:focus-visible,
.page-about .about-tl__item:focus {
  border-color: var(--line-lime);
  background: linear-gradient(180deg, rgba(16, 48, 38, 0.9), rgba(7, 26, 20, 0.7));
}

.page-about .about-tl__item:focus {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-about .about-tl__year {
  font-family: var(--font-num);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .about-tl__title {
  margin: 0.15rem 0 0;
  font-size: 1rem;
  color: var(--bone);
}

.page-about .about-tl__note {
  margin: 0.5rem 0 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: rgba(244, 240, 230, 0.72);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 1rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__card {
  position: relative;
  padding: 1.2rem 1.1rem 1.3rem;
  border: 1px solid var(--line-soft);
  border-radius: 30px 10px 30px 10px;
  background:
    radial-gradient(120% 110% at 100% 0%, rgba(200, 255, 61, 0.07), transparent 62%),
    var(--about-card-bg);
  transition: border-color var(--dur) var(--ease), border-radius var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-team__card:nth-child(even) {
  border-radius: 10px 30px 10px 30px;
  background:
    radial-gradient(120% 110% at 0% 0%, rgba(232, 184, 92, 0.08), transparent 62%),
    var(--about-card-bg);
}

.page-about .about-team__card:hover {
  border-color: var(--line-lime);
  transform: translateY(-2px);
}

.page-about .about-team__card:focus {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-about .about-team__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(1.8rem, 5vw, 2.3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-about .about-team__card h3 {
  margin: 0.5rem 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--bone);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: rgba(244, 240, 230, 0.72);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  display: grid;
  gap: clamp(1.2rem, 3vw, 1.8rem);
  margin-top: 1.4rem;
  min-width: 0;
}

.page-about .about-eco__list {
  display: grid;
  gap: 0.8rem;
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: 0;
}

.page-about .about-eco__list li {
  padding: 0.95rem 1rem;
  border-left: 2px solid var(--gold);
  border-radius: 0 12px 12px 0;
  background: linear-gradient(90deg, rgba(232, 184, 92, 0.08), transparent 72%);
}

.page-about .about-eco__list h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  color: var(--bone);
}

.page-about .about-eco__list p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: rgba(244, 240, 230, 0.72);
}

.page-about .about-eco .about-figure {
  margin: 0;
}

.page-about .about-honors {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-honors .tag {
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

/* ---------- 结尾通道 ---------- */
.page-about .about-cta {
  margin-top: clamp(1.6rem, 4vw, 2.6rem);
  padding: clamp(1.3rem, 4vw, 2.4rem);
  border: 1px solid var(--line-lime);
  border-radius: 22px;
  background:
    linear-gradient(120deg, rgba(200, 255, 61, 0.09), transparent 60%),
    rgba(14, 43, 34, 0.5);
}

.page-about .about-cta .kicker {
  margin: 0 0 0.6rem;
  color: var(--lime);
}

.page-about .about-cta h2 {
  margin: 0 0 0.9rem;
  color: var(--bone);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.3rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.95fr);
    align-items: end;
  }

  .page-about .about-sec__head {
    grid-template-columns: 4.6rem minmax(0, 1fr);
    column-gap: 1.2rem;
    row-gap: 0.25rem;
    align-items: start;
  }

  .page-about .about-sec__no {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .page-about .about-sec__head .kicker {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .about-sec__head h2 {
    grid-column: 2;
    grid-row: 2;
  }

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

  .page-about .about-tl__item {
    margin-left: calc(var(--about-step) * var(--i, 0));
  }

  .page-about .about-tl__item:nth-child(1) { --i: 0; }
  .page-about .about-tl__item:nth-child(2) { --i: 1; }
  .page-about .about-tl__item:nth-child(3) { --i: 2; }
  .page-about .about-tl__item:nth-child(4) { --i: 3; }
  .page-about .about-tl__item:nth-child(5) { --i: 4; }
  .page-about .about-tl__item:nth-child(6) { --i: 5; }

  .page-about .about-tl__note {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 240ms var(--ease), opacity 200ms var(--ease), margin-top 240ms var(--ease);
  }

  .page-about .about-tl__item:hover .about-tl__note,
  .page-about .about-tl__item:focus .about-tl__note,
  .page-about .about-tl__item:focus-within .about-tl__note {
    max-height: 12rem;
    margin-top: 0.5rem;
    opacity: 1;
  }

  .page-about .about-eco {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.72fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: 212px minmax(0, 1fr);
    column-gap: clamp(1.6rem, 4vw, 3.2rem);
    align-items: start;
  }

  .page-about .about-index-wrap {
    position: sticky;
    top: calc(var(--hdr-h) + 1.4rem);
    align-self: start;
    padding-top: clamp(2rem, 5vw, 3.6rem);
  }

  .page-about .about-index {
    padding: 0;
  }

  .page-about .about-index ol {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0.15rem;
  }

  .page-about .about-flow .about-sec:first-child {
    border-top: 0;
  }
}

@media (min-width: 1100px) {
  .page-about .about-team {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
  }

  .page-about .about-steps__item:hover,
  .page-about .about-team__card:hover {
    transform: none;
  }
}