.page-about {
  --about-pad: clamp(64px, 9vw, 132px);
  --tl-gap: clamp(26px, 4vw, 46px);
  --tl-dot: 11px;
  position: relative;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(44px, 6vw, 88px) 0 clamp(40px, 6vw, 76px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -10% -20% auto -20%;
  height: 90%;
  background: radial-gradient(52% 60% at 22% 18%, rgba(53, 240, 200, 0.10), transparent 70%),
              radial-gradient(40% 50% at 88% 8%, rgba(255, 138, 61, 0.07), transparent 72%);
  pointer-events: none;
}

.page-about .about-hero > .container {
  position: relative;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 52px);
  margin-top: clamp(26px, 4vw, 48px);
}

.page-about .about-hero__lead {
  max-width: 42ch;
}

.page-about .about-hero__lede {
  margin-top: clamp(18px, 2.4vw, 26px);
  color: var(--grey);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  max-width: 52ch;
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  align-self: end;
}

.page-about .about-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2vw, 22px) clamp(14px, 1.8vw, 20px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background var(--dur) var(--ease);
}

.page-about .about-hero__stats li:hover {
  background: var(--ink-150);
}

.page-about .about-hero__stats .num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--mint);
}

.page-about .about-hero__stats .lbl {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--grey);
}

/* ---------- 页内跳转条 ---------- */

.page-about .about-jump {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--ink-150);
}

.page-about .about-jump__inner {
  display: flex;
  gap: clamp(20px, 3vw, 36px);
  overflow-x: auto;
  padding-top: 14px;
  padding-bottom: 14px;
  scrollbar-width: none;
}

.page-about .about-jump__inner::-webkit-scrollbar {
  display: none;
}

.page-about .about-jump__link {
  position: relative;
  flex: 0 0 auto;
  padding-bottom: 3px;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--grey);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease);
}

.page-about .about-jump__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}

.page-about .about-jump__link:hover,
.page-about .about-jump__link[aria-current="true"] {
  color: var(--cream);
}

.page-about .about-jump__link:hover::after,
.page-about .about-jump__link[aria-current="true"]::after {
  transform: scaleX(1);
}

/* ---------- 通用区块头 ---------- */

.page-about .about-timeline,
.page-about .about-columns,
.page-about .about-craft,
.page-about .about-team,
.page-about .about-partners {
  padding: var(--about-pad) 0;
}

.page-about .about-head {
  max-width: 46ch;
}

.page-about .about-head__text {
  margin-top: 18px;
  color: var(--grey);
  font-size: clamp(15px, 1.5vw, 16px);
  line-height: 1.85;
}

/* ---------- 时间轴 ---------- */

.page-about .tl {
  list-style: none;
  position: relative;
  margin: clamp(34px, 5vw, 60px) 0 0;
  padding: 0 0 0 var(--tl-gap);
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, var(--mint) 0%, var(--mint-d) 22%, var(--line) 58%, var(--ink-200) 100%);
}

.page-about .tl__item {
  position: relative;
  padding-bottom: clamp(30px, 4.4vw, 54px);
}

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

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: calc(var(--tl-gap) * -1);
  top: 0.5em;
  width: var(--tl-dot);
  height: var(--tl-dot);
  transform: translateX(-50%);
  border-radius: 50%;
  box-sizing: border-box;
  background: var(--ink-000);
  border: 2px solid var(--mint);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .tl__item:hover::before {
  background: var(--orange);
  border-color: var(--orange);
}

.page-about .tl__body {
  position: relative;
  background: var(--ink-100);
  border: 1px solid var(--line);
  padding: clamp(20px, 2.6vw, 30px);
  max-width: 100%;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .tl__body::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 16px;
  height: 16px;
  border-top: 1px solid var(--mint);
  border-left: 1px solid var(--mint);
  pointer-events: none;
  opacity: 0.7;
  transition: opacity var(--dur) var(--ease);
}

.page-about .tl__item:hover .tl__body {
  border-color: var(--mint);
  transform: translateY(-2px);
}

.page-about .tl__item:hover .tl__body::before {
  opacity: 1;
}

.page-about .tl__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.page-about .tl__idx {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .tl__body p {
  margin-top: 12px;
  color: var(--grey);
  font-size: 15px;
  line-height: 1.85;
}

/* ---------- 图片区 ---------- */

.page-about .about-figure {
  margin: clamp(38px, 5vw, 64px) 0 0;
  border: 1px solid var(--line);
  background: var(--ink-150);
  overflow: hidden;
}

.page-about .about-figure--side {
  max-width: 720px;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-figure figcaption {
  padding: 14px clamp(16px, 2vw, 20px) 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--grey);
  letter-spacing: 0.01em;
}

/* ---------- 栏目体系面板 ---------- */

.page-about .cat-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2vw, 22px);
  margin-top: clamp(34px, 5vw, 58px);
}

.page-about .cat-col {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--ink-100);
  border: 1px solid var(--line);
  border-top-width: 2px;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .cat-col--data {
  --cat-accent: var(--mint);
  border-top-color: var(--mint);
}

.page-about .cat-col--report {
  --cat-accent: var(--orange);
  border-top-color: var(--orange);
}

.page-about .cat-col--column {
  --cat-accent: var(--cream);
  border-top-color: var(--cream);
}

.page-about .cat-col:hover {
  background: var(--ink-150);
}

.page-about .cat-col__head {
  display: grid;
  gap: 8px;
}

.page-about .cat-col__idx {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--cat-accent, var(--mint));
}

.page-about .cat-col__head p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--grey);
}

.page-about .cat-col__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--ink-200);
}

.page-about .cat-col__list li {
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-bottom: 1px solid var(--ink-200);
}

.page-about .cat-col__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .cat-col__name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .cat-col__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--grey);
}

/* ---------- 制作流程 ---------- */

.page-about .steps {
  list-style: none;
  margin: clamp(34px, 5vw, 58px) 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .steps li {
  position: relative;
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--ink-000);
  transition: background var(--dur) var(--ease);
}

.page-about .steps li::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: var(--mint);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}

.page-about .steps li:hover {
  background: var(--ink-100);
}

.page-about .steps li:hover::after {
  transform: scaleX(1);
}

.page-about .steps__num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-about .steps__title {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 900;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .steps__text {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--grey);
}

/* ---------- 团队 ---------- */

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 56px);
  align-items: start;
}

.page-about .about-team__body {
  max-width: 60ch;
}

.page-about .about-team__lede {
  margin-top: 18px;
  color: var(--grey);
  font-size: clamp(15px, 1.5vw, 16px);
  line-height: 1.85;
}

.page-about .team-list {
  list-style: none;
  margin: clamp(26px, 3.4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-about .team-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0 18px 14px;
  border-bottom: 1px solid var(--line);
  border-left: 1px solid var(--line);
  transition: border-left-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-about .team-list li:hover {
  border-left-color: var(--mint);
  padding-left: 20px;
}

.page-about .team-list__idx {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mint);
  padding-top: 4px;
}

.page-about .team-list__body p {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--grey);
}

.page-about .about-team__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-150);
  overflow: hidden;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 内容合作 ---------- */

.page-about .about-partners__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 44px);
  padding: clamp(26px, 4.4vw, 52px);
  background: linear-gradient(135deg, var(--ink-100) 0%, var(--ink-150) 62%, var(--ink-200) 100%);
  border: 1px solid var(--line);
}

.page-about .about-partners__figure {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-partners__num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(58px, 11vw, 104px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--mint);
}

.page-about .about-partners__cap {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--grey);
}

.page-about .about-partners__body p {
  margin-top: 16px;
  color: var(--grey);
  font-size: clamp(15px, 1.5vw, 16px);
  line-height: 1.85;
}

/* ---------- 延伸入口 ---------- */

.page-about .about-next {
  padding: clamp(52px, 7vw, 104px) 0 clamp(64px, 9vw, 132px);
}

.page-about .next-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(26px, 3.6vw, 40px);
}

.page-about .next-link {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 132px;
  padding: clamp(18px, 2.2vw, 24px);
  background: var(--ink-100);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .next-link:hover {
  border-color: var(--orange);
  background: var(--ink-150);
  transform: translateY(-2px);
}

.page-about .next-link__title {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .next-link__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--grey);
}

.page-about .next-link::after {
  content: "→";
  position: absolute;
  right: clamp(16px, 2vw, 22px);
  bottom: clamp(14px, 1.8vw, 20px);
  font-family: var(--font-data);
  font-size: 15px;
  color: var(--grey);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .next-link:hover::after {
  color: var(--orange);
  transform: translateX(3px);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-about .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-about .tl__item:nth-child(1) .tl__body {
    max-width: 58%;
  }

  .page-about .tl__item:nth-child(2) .tl__body {
    max-width: 66%;
  }

  .page-about .tl__item:nth-child(3) .tl__body {
    max-width: 76%;
  }

  .page-about .tl__item:nth-child(4) .tl__body {
    max-width: 86%;
  }

  .page-about .tl__item:nth-child(5) .tl__body {
    max-width: 100%;
  }

  .page-about .cat-panel {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .cat-col:nth-child(2) {
    margin-top: 26px;
  }

  .page-about .cat-col:nth-child(3) {
    margin-top: 52px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  }

  .page-about .about-partners__inner {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.35fr);
    align-items: center;
    gap: clamp(34px, 5vw, 76px);
  }

  .page-about .about-partners__figure {
    padding-bottom: 0;
    padding-right: clamp(24px, 3vw, 44px);
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }
}

@media (min-width: 1080px) {
  .page-about .steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .next-links {
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  }
}
<<<END>>>