.page-about {
  --about-gap: clamp(48px, 6vw, 88px);
}

.page-about .about-page {
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(64px, 8vw, 120px);
}

/* 面包屑 */
.page-about .about-crumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(28px, 4vw, 52px);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .about-crumbs a {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.24s var(--ease);
}

.page-about .about-crumbs a:hover,
.page-about .about-crumbs a:focus-visible {
  color: var(--lime);
}

.page-about .about-crumbs .crumbs__sep {
  color: var(--grid);
}

.page-about .about-crumbs [aria-current="page"] {
  color: var(--white);
}

/* 左右分屏骨架 */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: start;
}

/* 左栏：品牌陈述 */
.page-about .about-lead__inner {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding-top: 24px;
  border-top: 2px solid var(--lime);
}

.page-about .about-lead__label {
  color: var(--lime);
  margin: 0;
}

.page-about .about-lead__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 4.6vw, 2.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-lead__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-lead__sign {
  margin: 0;
  padding-left: 34px;
  position: relative;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--white);
}

.page-about .about-lead__sign::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 24px;
  height: 1px;
  background: var(--lime);
}

.page-about .about-lead__figure {
  margin: 6px 0 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--grid);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-about .about-lead__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.06);
}

/* 右栏内容流 */
.page-about .about-flow {
  display: flex;
  flex-direction: column;
  gap: var(--about-gap);
  min-width: 0;
}

/* 通用标题与正文 */
.page-about .sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 3.4vw, 2.05rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .sec-text {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--white);
  max-width: 62ch;
}

.page-about .about-section {
  border-top: 1px solid var(--grid);
  padding-top: clamp(24px, 3vw, 36px);
  margin: 0;
  scroll-margin-top: 96px;
}

.page-about .about-section__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 26px;
}

.page-about .about-section__lead {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 48ch;
}

/* 数字索引 */
.page-about .about-figures {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-figures__title {
  margin-bottom: 8px;
}

.page-about .figures {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  border-top: 1px solid var(--grid);
}

.page-about .figures__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--grid);
  transition: border-color 0.28s var(--ease);
}

.page-about .figures__row:hover {
  border-bottom-color: var(--lime);
}

.page-about .figures__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.05rem);
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-about .figures__row:first-child .figures__num {
  font-size: clamp(2rem, 6vw, 2.9rem);
}

.page-about .figures__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* 采编工作台图 */
.page-about .about-shot {
  position: relative;
  margin: 0 0 28px;
  border: 1px solid var(--grid);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.page-about .about-shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.page-about .about-shot .media__tag {
  left: 0;
  bottom: 0;
  padding: 6px 14px;
  background: var(--ink);
  color: var(--lime);
  font-size: 11px;
  letter-spacing: 0.1em;
}

/* 三步流程 */
.page-about .steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 1px;
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-about .steps__item {
  background: var(--ink-2);
  padding: 20px 18px;
  display: grid;
  gap: 6px;
  min-width: 0;
}

.page-about .steps__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.page-about .steps__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .steps__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* 赛季阶段线 */
.page-about .seasons {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .seasons__item {
  position: relative;
  padding: 18px 20px 20px 22px;
  background: var(--ink-2);
  border-left: 3px solid var(--lime);
  display: grid;
  gap: 6px;
  overflow: hidden;
  transition: background 0.3s var(--ease);
}

.page-about .seasons__item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 26%;
  background: var(--lime);
  opacity: 0.09;
  clip-path: polygon(0 0, 100% 0, calc(100% - 22px) 100%, 0 100%);
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}

.page-about .seasons__item:nth-child(2)::before { width: 38%; }
.page-about .seasons__item:nth-child(3)::before { width: 50%; }
.page-about .seasons__item:nth-child(4)::before { width: 62%; }
.page-about .seasons__item:nth-child(5)::before { width: 78%; }
.page-about .seasons__item:nth-child(6)::before { width: 96%; }

.page-about .seasons__item--content {
  border-left-color: var(--cyan);
}

.page-about .seasons__item--content::before {
  background: var(--cyan);
}

.page-about .seasons__item:hover,
.page-about .seasons__item:focus-within {
  background: var(--ink-3);
}

.page-about .seasons__item:hover::before,
.page-about .seasons__item:focus-within::before {
  opacity: 0.16;
}

.page-about .seasons__item > * {
  position: relative;
  z-index: 1;
}

.page-about .seasons__top {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.page-about .seasons__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.page-about .seasons__item--content .seasons__no {
  color: var(--cyan);
}

.page-about .seasons__kind {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
  border: 1px solid var(--grid);
  padding: 2px 8px;
}

.page-about .seasons__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--white);
  transition: color 0.28s var(--ease);
}

.page-about .seasons__item:hover .seasons__title {
  color: var(--lime);
}

.page-about .seasons__item--content:hover .seasons__title {
  color: var(--cyan);
}

.page-about .seasons__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 56ch;
}

.page-about .about-texture {
  margin: 26px 0 0;
  height: 132px;
  overflow: hidden;
  border: 1px solid var(--grid);
  position: relative;
}

.page-about .about-texture img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  filter: grayscale(0.4);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.05));
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.05));
}

/* 团队四象限 */
.page-about .crew {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
  margin-top: 6px;
}

.page-about .crew__cell {
  position: relative;
  background: var(--ink-2);
  padding: 22px 20px 26px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  transition: background 0.3s var(--ease);
  outline: none;
}

.page-about .crew__cell::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.34s var(--ease);
}

.page-about .crew__cell:hover,
.page-about .crew__cell:focus-visible {
  background: var(--ink-3);
}

.page-about .crew__cell:hover::after,
.page-about .crew__cell:focus-visible::after {
  transform: scaleX(1);
}

.page-about .crew__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.75rem;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-about .crew__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .crew__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .crew__note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--grid);
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* 使用场景 */
.page-about .aud {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
}

.page-about .aud__item {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-top: 1px solid var(--grid);
}

.page-about .aud__item:last-child {
  border-bottom: 1px solid var(--grid);
}

.page-about .aud__key {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.03em;
  color: var(--lime);
}

.page-about .aud__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 54ch;
}

/* 认证 */
.page-about .creds {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .creds__item {
  border: 1px solid var(--grid);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: linear-gradient(158deg, var(--ink-2) 0%, var(--ink) 100%);
  min-width: 0;
}

.page-about .creds__mark {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .creds__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  line-height: 1.3;
  color: var(--white);
}

.page-about .creds__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* 收束 */
.page-about .about-outro {
  margin-top: clamp(56px, 8vw, 110px);
  padding-top: clamp(28px, 4vw, 40px);
  border-top: 2px solid var(--lime);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .about-outro__title {
  font-size: clamp(1.6rem, 4.2vw, 2.4rem);
}

.page-about .about-outro__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
  max-width: 62ch;
}

.page-about .about-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

/* 中等屏幕 */
@media (min-width: 560px) {
  .page-about .figures__row {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
    padding: 18px 0;
  }

  .page-about .steps__item {
    grid-template-columns: 56px minmax(0, 1fr);
    column-gap: 20px;
  }

  .page-about .steps__no {
    grid-row: span 2;
    padding-top: 3px;
  }
}

@media (min-width: 680px) {
  .page-about .crew {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .aud__item {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 26px;
    align-items: baseline;
    padding: 20px 0;
  }

  .page-about .creds {
    grid-template-columns: 1.15fr 1fr;
    gap: 18px;
  }
}

/* 桌面：左栏固定，右栏滚动 */
@media (min-width: 1024px) {
  .page-about .about-body {
    grid-template-columns: minmax(0, 360px) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 88px);
  }

  .page-about .about-lead__inner {
    padding-top: 28px;
  }
}

@media (min-width: 1024px) and (min-height: 780px) {
  .page-about .about-lead {
    position: sticky;
    top: 32px;
    align-self: start;
  }
}

@media (min-width: 1280px) {
  .page-about .about-body {
    grid-template-columns: minmax(0, 400px) minmax(0, 1fr);
  }

  .page-about .about-texture {
    height: 168px;
  }
}

/* 降低动效偏好 */
@media (prefers-reduced-motion: reduce) {
  .page-about .figures__row,
  .page-about .crew__cell,
  .page-about .crew__cell::after,
  .page-about .seasons__item,
  .page-about .seasons__item::before,
  .page-about .seasons__title,
  .page-about .about-crumbs a {
    transition: none;
  }

  .page-about .crew__cell::after {
    transform: scaleX(1);
    opacity: 0.35;
  }
}
<<<END>>>