.page-about {
  --about-gap: clamp(28px, 4vw, 48px);
  --about-rail: 150px;
  background: var(--cream-50);
  color: var(--text-900);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-top: clamp(22px, 4vw, 44px);
  padding-bottom: clamp(36px, 6vw, 72px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(79, 240, 200, 0.14) 0%, rgba(79, 240, 200, 0) 58%),
    var(--cream-50);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 24px);
  margin-top: clamp(22px, 3.6vw, 42px);
}

.page-about .about-hero__aside {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-hero__title {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-size: clamp(32px, 6.4vw, 68px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.012em;
  color: var(--ink-900);
  max-width: 17ch;
}

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

@media (min-width: 880px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(160px, 3fr) minmax(0, 8fr);
    align-items: start;
    gap: clamp(20px, 3vw, 48px);
  }
}

.page-about .about-figures {
  list-style: none;
  margin: clamp(32px, 5vw, 56px) 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--hair);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-figure {
  background: var(--cream-50);
  padding: clamp(16px, 2.4vw, 26px);
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-about .about-figure__num {
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--ink-900);
  letter-spacing: 0.02em;
}

.page-about .about-figure__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--moss-500);
  max-width: 26ch;
}

@media (min-width: 780px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 起点 ---------- */

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 22px);
}

.page-about .about-origin__body h2 {
  margin: 0 0 clamp(14px, 2vw, 20px);
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.16;
  color: var(--ink-900);
}

.page-about .about-origin__body p {
  max-width: 44ch;
  margin: 0 0 1em;
  line-height: 1.78;
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(150px, 3fr) minmax(0, 8fr);
    gap: clamp(20px, 3vw, 48px);
  }
}

.page-about .about-origin__media {
  margin: clamp(32px, 5vw, 60px) 0 0;
}

/* ---------- 时间轴 ---------- */

.page-about .about-timeline__head {
  max-width: 62ch;
  margin-bottom: clamp(32px, 5vw, 56px);
}

.page-about .about-timeline__head h2 {
  margin: 8px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(28px, 4.6vw, 48px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--ink-900);
}

.page-about .about-timeline__lead {
  max-width: 48ch;
}

.page-about .about-stops {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-stops--tail {
  margin-top: var(--about-gap);
}

.page-about .about-stops::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, rgba(18, 58, 49, 0.34) 0%, rgba(18, 58, 49, 0.08) 100%);
  border-radius: 2px;
  pointer-events: none;
}

.page-about .about-stop {
  position: relative;
  padding: 14px 16px 14px 38px;
  border-radius: var(--r-md);
  transition: background var(--t-base) ease-out, box-shadow var(--t-base) ease-out;
}

.page-about .about-stop::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 22px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  box-sizing: border-box;
  background: var(--cream-50);
  border: 2px solid var(--ink-700);
  z-index: 1;
}

.page-about .about-stop--key::before {
  background: var(--ink-700);
  border-color: var(--ink-700);
}

.page-about .about-stop--now::before {
  background: var(--orange-500);
  border-color: var(--orange-500);
}

.page-about .about-stop:target {
  background: var(--cream-100);
  box-shadow: 0 0 0 1px rgba(18, 58, 49, 0.14);
}

.page-about .about-stop:target::before {
  box-shadow: 0 0 0 4px rgba(79, 240, 200, 0.45);
}

.page-about .about-stop__rail {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.page-about .about-stop__no {
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--moss-500);
  letter-spacing: 0.04em;
}

.page-about .about-stop__tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: var(--r-pill);
  background: var(--cream-100);
  border: 1px solid var(--hair);
  color: var(--ink-900);
  font-size: 13px;
  line-height: 1.5;
  text-decoration: none;
  transition: background var(--t-fast) ease-out, color var(--t-fast) ease-out, border-color var(--t-fast) ease-out;
}

.page-about .about-stop__tag:hover,
.page-about .about-stop__tag:focus-visible {
  background: var(--ink-700);
  color: var(--cyan-200);
  border-color: var(--cyan-400);
}

.page-about .about-stop__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(21px, 2.8vw, 30px);
  font-weight: 800;
  line-height: 1.22;
  color: var(--ink-900);
}

.page-about .about-stop__text {
  margin: 0;
  max-width: 60ch;
  line-height: 1.78;
}

.page-about .about-stop__list {
  margin-top: 14px;
}

@media (min-width: 900px) {
  .page-about .about-stop {
    display: grid;
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    column-gap: clamp(22px, 3.2vw, 52px);
    padding: 18px 20px 18px 38px;
  }

  .page-about .about-stop__rail {
    position: sticky;
    top: 112px;
    align-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 0;
  }
}

/* ---------- 横向数据带 ---------- */

.page-about .about-metrics {
  margin: var(--about-gap) 0;
  background: var(--ink-900);
  border-radius: var(--r-lg);
  padding: clamp(28px, 4.4vw, 48px) 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-metrics::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(184, 247, 229, 0.07) 0 1px, transparent 1px 76px);
  pointer-events: none;
}

.page-about .about-metrics__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 36px);
}

.page-about .about-metrics__item {
  min-width: 0;
  border-left: 2px solid rgba(79, 240, 200, 0.4);
  padding-left: clamp(14px, 2vw, 22px);
}

.page-about .about-metrics__num {
  display: block;
  font-size: clamp(34px, 6vw, 58px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan-400);
  letter-spacing: 0.02em;
}

.page-about .about-metrics__label {
  display: block;
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--cyan-200);
  max-width: 24ch;
}

@media (min-width: 800px) {
  .page-about .about-metrics__inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 团队 ---------- */

.page-about .about-people__intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-about .about-people__text h2 {
  margin: 8px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(28px, 4.4vw, 44px);
  font-weight: 800;
  line-height: 1.12;
  color: var(--ink-900);
}

.page-about .about-people__text p {
  max-width: 46ch;
  margin: 0 0 1em;
  line-height: 1.78;
}

@media (min-width: 900px) {
  .page-about .about-people__intro {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }
}

.page-about .about-roles {
  list-style: none;
  margin: clamp(34px, 5vw, 60px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 28px);
}

.page-about .about-role {
  background: var(--cream-50);
  border: 1px solid var(--hair);
  border-radius: var(--r-lg);
  padding: clamp(20px, 3vw, 32px);
  min-width: 0;
  transition: border-color var(--t-base) ease-out, box-shadow var(--t-base) ease-out;
}

.page-about .about-role:hover {
  border-color: var(--ink-700);
  box-shadow: 0 6px 24px rgba(11, 36, 30, 0.07);
}

.page-about .about-role__num {
  display: block;
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--ink-900);
}

.page-about .about-role__num::after {
  content: "";
  display: block;
  width: 30px;
  height: 3px;
  margin-top: 14px;
  border-radius: 2px;
  background: var(--orange-500);
}

.page-about .about-role__title {
  margin: 18px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink-900);
}

.page-about .about-role p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  max-width: 40ch;
}

@media (min-width: 780px) {
  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-role:first-child {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: clamp(20px, 3vw, 42px);
    align-items: start;
  }

  .page-about .about-role:first-child .about-role__title {
    margin-top: 4px;
  }

  .page-about .about-role:first-child p {
    grid-column: 2;
  }
}

/* ---------- 覆盖与节奏 ---------- */

.page-about .about-reach__text h2 {
  margin: 8px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(28px, 4.4vw, 44px);
  font-weight: 800;
  line-height: 1.12;
  color: var(--ink-900);
}

.page-about .about-reach__text p {
  max-width: 42ch;
  margin: 0 0 1em;
  line-height: 1.78;
}

.page-about .about-cadence {
  list-style: none;
  margin: 0;
  padding: 1px;
  display: grid;
  gap: 1px;
  background: var(--hair);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-cadence__row {
  background: var(--cream-50);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 18px;
}

.page-about .about-cadence__time {
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink-900);
  letter-spacing: 0.02em;
}

.page-about .about-cadence__what {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-900);
}

@media (min-width: 440px) {
  .page-about .about-cadence__row {
    grid-template-columns: minmax(0, auto) minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }

  .page-about .about-cadence__time {
    white-space: nowrap;
  }
}

@media (min-width: 900px) {
  .page-about .about-reach__grid {
    display: grid;
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    column-gap: clamp(28px, 4vw, 60px);
    align-items: start;
  }
}

.page-about .about-reach__media {
  margin: clamp(32px, 5vw, 64px) 0 0;
}

/* ---------- 备案 ---------- */

.page-about .about-legal__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 52px);
}

.page-about .about-stamp {
  margin-top: 16px;
  background: var(--ink-900);
  border-radius: var(--r-md);
  padding: clamp(18px, 2.6vw, 26px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-left: 3px solid var(--cyan-400);
}

.page-about .about-stamp__label {
  font-size: 13px;
  line-height: 1.4;
  color: var(--cyan-200);
  letter-spacing: 0.04em;
}

.page-about .about-stamp__value {
  font-size: clamp(15px, 1.8vw, 18px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--cyan-400);
  letter-spacing: 0.02em;
  word-break: break-all;
}

.page-about .about-legal__body h2 {
  margin: 8px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.14;
  color: var(--ink-900);
}

.page-about .about-legal__body p {
  max-width: 48ch;
  margin: 0 0 1em;
  line-height: 1.78;
}

@media (min-width: 880px) {
  .page-about .about-legal__grid {
    grid-template-columns: minmax(200px, 4fr) minmax(0, 8fr);
    align-items: start;
  }
}

/* ---------- 下一步 ---------- */

.page-about .about-next__title {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.2vw, 42px);
  font-weight: 800;
  line-height: 1.14;
  color: var(--cream-50);
  max-width: 20ch;
}

.page-about .about-next__lead {
  margin: 0;
  max-width: 46ch;
  line-height: 1.78;
  color: var(--cyan-200);
}

.page-about .about-next__links {
  list-style: none;
  margin: clamp(30px, 4.6vw, 52px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(12px, 1.8vw, 18px);
}

.page-about .about-next__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 16px;
  row-gap: 6px;
  align-items: baseline;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--hair-cyan);
  border-radius: var(--r-lg);
  text-decoration: none;
  background: rgba(18, 58, 49, 0.45);
  transition: border-color var(--t-base) ease-out, background var(--t-base) ease-out;
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  border-color: var(--cyan-400);
  background: var(--ink-700);
}

.page-about .about-next__link-no {
  grid-row: 1;
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan-400);
  letter-spacing: 0.04em;
}

.page-about .about-next__link-title {
  grid-row: 1;
  grid-column: 2;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 800;
  color: var(--cream-50);
  line-height: 1.25;
}

.page-about .about-next__link-note {
  grid-row: 2;
  grid-column: 1 / -1;
  font-size: 14px;
  line-height: 1.65;
  color: var(--cyan-200);
}

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