.page-about {
  display: block;
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-sans);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.015em;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-bottom: clamp(36px, 6vw, 72px);
}

.page-about .about-hero__intro .kicker {
  display: block;
  margin: 0 0 14px;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about h1 {
  margin: 0 0 18px;
  font-size: clamp(28px, 6vw, 56px);
  line-height: 1.1;
}

.page-about .about-hero__lead {
  margin: 0 0 22px;
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--text-2);
}

.page-about .about-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-hero__art {
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
  background: var(--panel);
}

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

.page-about .about-hero__art img {
  aspect-ratio: 16 / 9;
}

.page-about .media__cap {
  display: block;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* ---------- 数据条 ---------- */

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
  margin-bottom: clamp(44px, 7vw, 88px);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 16px;
  background: var(--ink-2);
}

.page-about .about-stat__v {
  font-family: var(--font-mono);
  font-size: clamp(19px, 3.2vw, 28px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--orange);
  letter-spacing: -0.01em;
}

.page-about .about-stat--cyan .about-stat__v {
  color: var(--cyan);
}

.page-about .about-stat__l {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 我们解决什么 ---------- */

.page-about .about-do {
  margin-bottom: clamp(44px, 7vw, 88px);
}

.page-about .about-do .section-head {
  margin-bottom: 16px;
}

.page-about .about-do .section-head .kicker {
  display: block;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-do .section-head h2 {
  margin: 0;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.25;
}

.page-about .about-do__lead {
  max-width: 66ch;
  margin: 0 0 26px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-2);
}

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

.page-about .about-do__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-do__idx {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--cyan-line);
  text-stroke: 1px var(--cyan-line);
}

.page-about .about-do__body h3 {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.35;
}

.page-about .about-do__body p {
  margin: 0;
  max-width: 70ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-2);
}

/* ---------- 角色分段切换 ---------- */

.page-about .about-audience {
  margin-bottom: clamp(44px, 7vw, 88px);
}

.page-about .about-audience .section-head {
  margin-bottom: 18px;
}

.page-about .about-audience .section-head .kicker {
  display: block;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-audience .section-head h2 {
  margin: 0;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.25;
}

.page-about .about-audience .segs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-about .about-audience .segs__btn {
  appearance: none;
  cursor: pointer;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--text-2);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease),
    background-color 0.25s var(--ease);
}

.page-about .about-audience .segs__btn:hover {
  color: var(--cyan);
  border-color: var(--cyan-line);
}

.page-about .about-audience .segs__btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .about-audience .segs__btn[aria-selected="true"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about .about-audience .segs-panel {
  background: var(--panel);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
  padding: clamp(20px, 3.6vw, 34px);
}

.page-about .about-audience .segs-panel[hidden] {
  display: none;
}

.page-about .about-aud__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.page-about .about-aud__text h3 {
  margin: 0 0 10px;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.35;
}

.page-about .about-aud__text p {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-2);
}

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

.page-about .about-aud__art {
  border: 1px solid var(--line);
  background: var(--ink-2);
}

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

/* ---------- 来历 ---------- */

.page-about .about-origin {
  margin-bottom: clamp(44px, 7vw, 88px);
}

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.page-about .about-origin__main .kicker {
  display: block;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-origin__main h2 {
  margin: 0 0 16px;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.25;
}

.page-about .about-origin__main .prose p {
  margin: 0 0 14px;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-2);
}

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

.page-about .about-origin__art {
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-cyan);
  background: var(--panel);
}

.page-about .about-origin__art img {
  aspect-ratio: 5 / 6;
}

/* ---------- 结尾行动区 ---------- */

.page-about .about-cta__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  align-items: center;
  padding: clamp(24px, 4vw, 42px);
}

.page-about .about-cta__text .kicker {
  display: block;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-about .about-cta__text h2 {
  margin: 0 0 12px;
  font-size: clamp(20px, 3.2vw, 30px);
  line-height: 1.28;
}

.page-about .about-cta__text p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-2);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板 ---------- */

@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stat {
    padding: 24px 20px;
  }

  .page-about .about-do__item {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 26px;
    padding: 28px 0;
  }

  .page-about .about-aud__body {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 28px;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.88fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: end;
  }

  .page-about .about-hero__art {
    transform: translateY(14px);
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.75fr);
    gap: clamp(30px, 5vw, 62px);
  }

  .page-about .about-cta__panel {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 36px;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-audience .segs__btn {
    transition: none;
  }

  .page-about .about-hero__art {
    transform: none;
  }
}
<<<END>>>