.page-about {
  --about-rail: 176px;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .breadcrumb {
  padding-top: clamp(20px, 4vw, 36px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(24px, 4vw, 44px) 0 clamp(32px, 5vw, 56px);
  border-bottom: 1px solid var(--hair);
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  max-width: 22ch;
  font-size: clamp(28px, 5vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--text-strong);
}

.page-about .about-hero .lede {
  max-width: 48ch;
  margin-top: clamp(16px, 2.4vw, 24px);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 4vw, 44px);
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-about .about-stats .stat {
  background: var(--panel);
  padding: 16px 14px;
}

@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-stats .stat {
    padding: 20px 18px;
  }
}

/* ---------- 左窄右宽 ---------- */
.page-about .about-layout {
  display: grid;
  gap: clamp(32px, 5vw, 56px);
  padding-top: clamp(32px, 5vw, 64px);
}

.page-about .about-rail {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
  border-top: 1px solid var(--hair);
  padding-top: 14px;
}

.page-about .rail__label {
  margin: 0;
  color: var(--muted);
  position: relative;
  padding-left: 18px;
}

.page-about .rail__label::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 12px;
  height: 1px;
  background: var(--cyan);
}

.page-about .rail__list {
  list-style: none;
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--hair);
  border-radius: var(--r);
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-about .rail__link:hover,
.page-about .rail__link:focus-visible {
  color: var(--text-strong);
  border-color: var(--cyan);
  background: var(--panel-2);
}

.page-about .rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.page-about .rail__seasons {
  display: none;
}

.page-about .rail__img {
  display: none;
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 76px);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 104px;
    align-self: start;
    max-height: calc(100vh - 140px);
    overflow-y: auto;
    scrollbar-width: none;
  }

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

  .page-about .rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
  }

  .page-about .rail__link {
    border: 0;
    border-radius: 0;
    padding: 5px 0;
    background: none;
  }

  .page-about .rail__link:hover,
  .page-about .rail__link:focus-visible {
    background: none;
    color: var(--cyan);
  }

  .page-about .rail__seasons {
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--hair);
    padding-left: 12px;
  }

  .page-about .rail__season {
    position: relative;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--muted);
    padding: 3px 0;
  }

  .page-about .rail__season::before {
    content: "";
    position: absolute;
    left: -15px;
    top: 50%;
    width: 5px;
    height: 5px;
    margin-top: -2.5px;
    border-radius: 50%;
    background: var(--slate);
  }

  .page-about .rail__season--now {
    color: var(--cyan);
  }

  .page-about .rail__season--now::before {
    background: var(--cyan);
  }

  .page-about .rail__img {
    display: block;
  }
}

/* ---------- 正文 ---------- */
.page-about .about-body {
  display: flex;
  flex-direction: column;
  gap: clamp(56px, 8vw, 112px);
  min-width: 0;
}

.page-about .about-section,
.page-about .about-cta {
  min-width: 0;
  scroll-margin-top: 112px;
}

.page-about .about-section__head {
  display: grid;
  gap: 8px;
  border-top: 1px solid var(--hair);
  padding-top: 14px;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-about .about-section__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .about-section__title {
  margin: 0;
  font-size: clamp(21px, 3.1vw, 30px);
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--text-strong);
}

.page-about .about-p {
  max-width: 62ch;
  margin: 0 0 14px;
  color: var(--text);
}

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

/* ---------- 媒体容器 ---------- */
.page-about .media-frame {
  min-width: 0;
}

.page-about .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--hair);
  border-radius: var(--r);
  background: var(--panel-2);
  object-fit: cover;
}

.page-about .media-frame__cap {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

/* ---------- 赛季时间轴 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 clamp(22px, 3vw, 30px) 26px;
  border-left: 1px solid var(--hair);
}

.page-about .timeline__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .timeline__dot {
  position: absolute;
  left: -4px;
  top: 6px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--slate);
}

.page-about .timeline__dot--cyan {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(56, 244, 206, 0.12);
}

.page-about .timeline__dot--amber {
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 162, 58, 0.14);
}

.page-about .timeline__stage {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .timeline__title {
  margin: 6px 0 8px;
  font-size: clamp(17px, 2vw, 19px);
  color: var(--text-strong);
}

.page-about .timeline__body {
  max-width: 58ch;
  margin: 0;
  color: var(--text);
}

/* ---------- 团队 ---------- */
.page-about .team-split {
  display: grid;
  gap: clamp(26px, 4vw, 40px);
}

.page-about .team-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .team-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 8px;
  padding: 16px 0;
  border-top: 1px solid var(--hair);
}

.page-about .team-item:last-child {
  border-bottom: 1px solid var(--hair);
}

.page-about .team-item__num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-about .team-item__role {
  margin: 0 0 6px;
  font-size: 17px;
  color: var(--text-strong);
}

.page-about .team-item__count {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
  vertical-align: 2px;
}

.page-about .team-item__desc {
  margin: 0;
  font-size: 15px;
  color: var(--text);
}

@media (min-width: 900px) {
  .page-about .team-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-about .team-visual {
    position: sticky;
    top: 112px;
  }
}

/* ---------- 三道关卡 ---------- */
.page-about .verify-visual {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .verify-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: clamp(20px, 3vw, 30px) 0;
}

.page-about .vstep {
  border: 1px solid var(--hair);
  border-radius: var(--r);
  background: var(--panel);
  transition: border-color 220ms var(--ease), box-shadow 220ms var(--ease);
}

.page-about .vstep[open] {
  border-color: rgba(56, 244, 206, 0.42);
  box-shadow: 0 0 0 1px rgba(56, 244, 206, 0.1);
}

.page-about .vstep__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px;
  cursor: pointer;
  list-style: none;
}

.page-about .vstep__summary::-webkit-details-marker {
  display: none;
}

.page-about .vstep__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: var(--r);
}

.page-about .vstep__num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

.page-about .vstep__name {
  font-size: 17px;
  color: var(--text-strong);
}

.page-about .vstep__sign {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--amber);
}

.page-about .vstep__sign::before {
  content: "＋";
}

.page-about .vstep[open] .vstep__sign::before {
  content: "－";
}

.page-about .vstep__body {
  padding: 0 16px 18px;
  border-top: 1px solid var(--hair-2);
  padding-top: 14px;
}

.page-about .vstep__body .about-p {
  font-size: 15px;
}

.page-about .vstep__out {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .verify-note {
  border-left: 2px solid var(--slate);
  padding-left: 16px;
}

/* ---------- 用户类型 ---------- */
.page-about .client-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(18px, 3vw, 28px);
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-about .client-card {
  background: var(--panel);
  padding: clamp(18px, 3vw, 26px);
}

.page-about .client-card__who {
  margin: 0 0 10px;
  font-size: 17px;
  color: var(--text-strong);
}

.page-about .client-card__use {
  margin: 0;
  font-size: 15px;
  color: var(--text);
}

@media (min-width: 760px) {
  .page-about .client-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 合作与资质 ---------- */
.page-about .cred-grid {
  display: grid;
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-about .cred-item {
  background: var(--panel-2);
  padding: 20px 18px;
}

.page-about .cred-item__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  font-variant-numeric: tabular-nums;
}

.page-about .cred-item__value--cyan {
  color: var(--cyan);
}

.page-about .cred-item__value--amber {
  color: var(--amber);
}

.page-about .cred-item__label {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
}

.page-about .cred-note {
  margin-top: clamp(18px, 3vw, 26px);
  max-width: 64ch;
}

@media (min-width: 760px) {
  .page-about .cred-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  border-top: 1px solid var(--hair);
  padding-top: clamp(24px, 4vw, 40px);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-about a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}
<<<END>>>