.page-about {
  --about-pad: clamp(26px, 4vw, 44px);
  background: var(--cream);
  color: var(--ink);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(16px, 3vw, 26px);
  padding-bottom: clamp(30px, 6vw, 68px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 5vw, 44px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 7.2vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: 0.01em;
  margin: 0.3em 0 0.5em;
  max-width: 18ch;
}

.page-about .about-hero__lede {
  max-width: 46ch;
  margin: 0;
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  line-height: 1.9;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-about .about-hero__aside {
  display: grid;
  gap: clamp(16px, 3vw, 22px);
}

/* 版本实色块 */
.page-about .ver-panel {
  background: var(--orange);
  color: var(--ink);
  border-radius: var(--r-l);
  padding: clamp(18px, 3vw, 26px);
  box-shadow: var(--shadow-2);
}

.page-about .ver-panel__label {
  margin: 0;
  font-family: var(--font-index);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-about .ver-panel__no {
  margin: 0.28em 0 0.55em;
  font-family: var(--font-index);
  font-weight: 700;
  font-size: clamp(2.5rem, 9vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.02em;
}

.page-about .ver-panel__copy {
  border: 1px solid rgba(16, 39, 31, 0.35);
  background: transparent;
  color: var(--ink);
  border-radius: 999px;
  padding: 8px 15px;
  font-size: 0.82rem;
  font-family: var(--font-body);
  cursor: pointer;
}

.page-about .ver-panel__copy:hover {
  background: rgba(16, 39, 31, 0.08);
}

.page-about .ver-panel__note {
  margin: 0.65em 0 0;
  min-height: 1em;
  font-size: 0.78rem;
  color: var(--ink);
}

/* 图片容器 */
.page-about .about-fig {
  margin: clamp(22px, 4vw, 30px) 0 0;
}

.page-about .about-hero__figure {
  margin: 0;
}

.page-about .about-fig__img {
  width: 100%;
  border-radius: var(--r-m);
  border: 1px solid var(--line);
  background: var(--paper);
  object-fit: cover;
}

.page-about .about-hero__img {
  aspect-ratio: 3 / 2;
  border-radius: var(--r-l);
}

.page-about .about-fig__img--wide {
  aspect-ratio: 2 / 1;
}

.page-about .about-fig__img--tall {
  aspect-ratio: 10 / 7;
}

.page-about .about-fig__cap {
  margin: 10px 0 0;
  font-family: var(--font-index);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 正文双栏 ---------- */
.page-about .about-body {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding-bottom: clamp(34px, 6vw, 72px);
}

.page-about .about-index {
  background: rgba(255, 253, 248, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  padding: 16px 18px;
}

.page-about .about-index__title {
  margin: 0 0 12px;
  font-family: var(--font-index);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 0;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.5;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-index__no {
  font-family: var(--font-index);
  font-size: 0.72rem;
  color: var(--teal);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange-mist);
}

.page-about .about-index__link:hover .about-index__no {
  color: var(--orange);
}

/* ---------- 章节 ---------- */
.page-about .about-sec {
  padding: var(--about-pad) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-sec__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  font-family: var(--font-index);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--violet);
}

.page-about .about-sec__kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--violet);
}

.page-about .about-sec__title {
  margin: 0 0 0.7em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.42rem, 4vw, 2.3rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
  max-width: 22ch;
}

.page-about .about-sec__text {
  max-width: 62ch;
}

.page-about .about-sec__text p {
  margin: 0 0 1em;
  font-size: clamp(0.98rem, 1.3vw, 1.05rem);
  line-height: 1.9;
}

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

.page-about .about-sec__more {
  margin: 20px 0 0;
}

.page-about .about-sec__link {
  display: inline-block;
  font-size: 0.92rem;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--teal);
  padding-bottom: 2px;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-sec__link:hover,
.page-about .about-sec__link:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 用户画像 ---------- */
.page-about .persona {
  list-style: none;
  margin: 24px 0 22px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .persona__item {
  position: relative;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  padding: 20px 18px 18px;
  box-shadow: var(--shadow-1);
}

.page-about .persona__item::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--orange);
}

.page-about .persona__item:nth-child(2)::before {
  background: var(--teal);
}

.page-about .persona__item:nth-child(3)::before {
  background: var(--violet);
}

.page-about .persona__name {
  margin: 0 0 8px;
  font-weight: 900;
  font-size: 1rem;
}

.page-about .persona__desc {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 版本阶段列表 ---------- */
.page-about .verlist {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .verlist__row {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-s);
}

.page-about .verlist__tag {
  justify-self: start;
  font-family: var(--font-index);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--ink);
  background: var(--lime);
  border-radius: 999px;
  padding: 4px 11px;
}

.page-about .verlist__row--now .verlist__tag {
  background: var(--orange);
}

.page-about .verlist__text {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.75;
}

/* ---------- 行业案例 ---------- */
.page-about .industries {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .industries__item {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 4px solid var(--orange);
  border-radius: var(--r-m);
  padding: 16px 18px;
}

.page-about .industries__item:nth-child(2) {
  border-left-color: var(--teal);
}

.page-about .industries__item:nth-child(3) {
  border-left-color: var(--violet);
}

.page-about .industries__item:nth-child(4) {
  border-left-color: var(--nav);
}

.page-about .industries__name {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 12px;
  margin: 0 0 6px;
  font-weight: 900;
  font-size: 1rem;
}

.page-about .industries__count {
  font-family: var(--font-index);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-about .industries__desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 维护小组数据 ---------- */
.page-about .team-stats {
  list-style: none;
  margin: 24px 0 0;
  padding: 1px;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  overflow: hidden;
}

.page-about .team-stats__cell {
  background: var(--paper);
  padding: 16px 18px;
}

.page-about .team-stats__key {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-index);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .team-stats__val {
  display: block;
  font-weight: 900;
  font-size: 1.02rem;
}

/* ---------- 时间线 ---------- */
.page-about .journey {
  list-style: none;
  position: relative;
  margin: 22px 0 0;
  padding: 0 0 0 22px;
  display: grid;
  gap: 12px;
}

.page-about .journey::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange), var(--teal));
}

.page-about .journey__link {
  position: relative;
  display: block;
  padding: 15px 17px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-about .journey__link::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 22px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--paper);
  border: 3px solid var(--orange);
}

.page-about .journey li:nth-child(2) .journey__link::before {
  border-color: var(--violet);
}

.page-about .journey li:nth-child(3) .journey__link::before {
  border-color: var(--teal);
}

.page-about .journey li:nth-child(4) .journey__link::before {
  border-color: var(--lime);
}

.page-about .journey__link:hover,
.page-about .journey__link:focus-visible {
  transform: translateX(4px);
  border-color: var(--teal);
}

.page-about .journey__stage {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-index);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .journey__name {
  display: block;
  margin-bottom: 4px;
  font-weight: 900;
  font-size: 1rem;
}

.page-about .journey__desc {
  display: block;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 收尾行动区 ---------- */
.page-about .about-cta-band {
  padding-bottom: clamp(36px, 6vw, 76px);
}

.page-about .about-cta {
  display: grid;
  gap: clamp(20px, 4vw, 32px);
  background: var(--nav);
  color: var(--paper);
  border-radius: var(--r-l);
  padding: clamp(24px, 5vw, 46px);
}

.page-about .about-cta__title {
  margin: 0 0 0.5em;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 4.4vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: 0.01em;
  max-width: 20ch;
}

.page-about .about-cta__lede {
  margin: 0;
  max-width: 46ch;
  font-size: 0.98rem;
  line-height: 1.85;
  color: rgba(255, 253, 248, 0.85);
}

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

/* ---------- 显现动效 ---------- */
.has-js .page-about [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.has-js .page-about [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .has-js .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .journey__link {
    transition: none;
  }

  .page-about .journey__link:hover,
  .page-about .journey__link:focus-visible {
    transform: none;
  }
}

/* ---------- 中等屏 ---------- */
@media (min-width: 700px) {
  .page-about .persona {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-about .verlist__row {
    grid-template-columns: 128px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: end;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 920px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-body {
    grid-template-columns: 224px minmax(0, 1fr);
    gap: clamp(36px, 4vw, 64px);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: 104px;
    border-radius: var(--r-l);
    padding: 20px;
    backdrop-filter: blur(10px);
  }
}

@media (min-width: 1100px) {
  .page-about .about-sec__title {
    max-width: 24ch;
  }

  .page-about .about-hero__title {
    max-width: 16ch;
  }
}
<<<END>>>