.page-about {
  --about-max: 1140px;
  --about-spine: 64px;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: clip;
}

.page-about .about-wrap {
  width: 100%;
  max-width: var(--about-max);
  margin-inline: auto;
  padding-inline: 20px;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

.page-about .about-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mint);
}

.page-about .about-eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--mint);
}

.page-about .about-h2 {
  font-size: clamp(26px, 5.2vw, 44px);
  line-height: 1.15;
  max-width: 17em;
}

.page-about .about-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.95;
  color: var(--mint);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: 40px 56px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(110% 80% at 88% 0%, rgba(60, 242, 196, 0.12), transparent 62%),
    radial-gradient(90% 70% at 10% 100%, rgba(22, 26, 60, 0.85), transparent 70%),
    var(--ink);
}

.page-about .about-hero__title {
  margin-top: 12px;
  font-size: clamp(34px, 8.4vw, 76px);
  line-height: 1.06;
  letter-spacing: -0.03em;
}

.page-about .about-hero__lede {
  margin: 24px 0 0;
  max-width: 34em;
  font-size: clamp(16px, 2.4vw, 18px);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__tags li {
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  background: var(--glass);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  position: relative;
  padding-block: 52px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-chapter__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-chapter__spine {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .about-chapter__spine span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mint);
}

.page-about .about-chapter__spine::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.page-about .about-copy {
  margin: 20px 0 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-copy + .about-copy {
  margin-top: 16px;
}

.page-about .about-copy strong {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 1.06em;
  color: var(--mint);
}

.page-about .about-copy a {
  color: var(--mint);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-about .about-copy a:hover {
  color: var(--mint-soft);
}

/* ---------- 图文栏 ---------- */
.page-about .about-cols {
  display: grid;
  gap: 28px;
  margin-top: 26px;
}

.page-about .about-cols__text .about-copy:first-child {
  margin-top: 0;
}

.page-about .about-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--zone-teal);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.62) brightness(0.86) contrast(1.05);
}

.page-about .about-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 团队数字带 ---------- */
.page-about .about-team {
  padding-block: 52px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--zone-teal), var(--ink));
}

.page-about .about-team__grid {
  display: grid;
  gap: 26px;
  margin-top: 28px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.page-about .about-team__total {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-team__bignum {
  font-size: clamp(84px, 22vw, 176px);
}

.page-about .about-team__unit {
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

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

.page-about .about-team__list li {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  transition: opacity 180ms var(--ease);
}

.page-about .about-team__list li:last-child {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.page-about .about-team__list .about-num {
  font-size: clamp(30px, 6vw, 44px);
  color: var(--muted);
  transition: color 180ms var(--ease);
  min-width: 2.2em;
}

.page-about .about-team__label {
  font-size: 15px;
  line-height: 1.5;
}

.page-about .about-team__list:hover li {
  opacity: 0.35;
}

.page-about .about-team__list li:hover {
  opacity: 1;
}

.page-about .about-team__list li:hover .about-num {
  color: var(--mint);
}

.page-about .about-team__note {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 流程区 ---------- */
.page-about .about-chapter--process {
  overflow: hidden;
  background: var(--zone-indigo);
  border-bottom: 1px solid var(--line);
}

.page-about .about-texture {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 300px;
  overflow: hidden;
  opacity: 0.16;
  pointer-events: none;
  z-index: 0;
  -webkit-mask-image: linear-gradient(to top, rgba(0, 0, 0, 1), transparent);
  mask-image: linear-gradient(to top, rgba(0, 0, 0, 1), transparent);
}

.page-about .about-texture img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  filter: grayscale(1) contrast(1.25);
}

.page-about .about-chapter--process .about-chapter__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-steps {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 24px;
}

.page-about .about-steps li {
  position: relative;
  padding-top: 26px;
}

.page-about .about-steps__bar {
  position: absolute;
  top: 6px;
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(255, 255, 255, 0.18);
}

.page-about .about-steps__bar::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--mint);
  transform: translate(50%, -50%);
  box-shadow: 0 0 0 3px rgba(60, 242, 196, 0.18);
}

.page-about .about-steps h3 {
  margin-bottom: 8px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0;
}

.page-about .about-steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 版本代次 ---------- */
.page-about .about-versions {
  display: grid;
  gap: 28px;
  margin-top: 44px;
  padding-top: 34px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.page-about .about-versions__list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
}

.page-about .about-versions__list::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(var(--mint), rgba(60, 242, 196, 0.1));
}

.page-about .about-versions__list li {
  position: relative;
  padding-bottom: 26px;
  transition: transform 180ms var(--ease);
}

.page-about .about-versions__list li:last-child {
  padding-bottom: 0;
}

.page-about .about-versions__list li::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid var(--mint);
  background: var(--zone-indigo);
}

.page-about .about-versions__list li:hover {
  transform: translateX(4px);
}

.page-about .about-versions__key {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mint-soft);
  transition: color 180ms var(--ease);
}

.page-about .about-versions__list li:hover .about-versions__key {
  color: var(--mint);
}

.page-about .about-versions__list h3 {
  margin-bottom: 6px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0;
}

.page-about .about-versions__list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-versions__figure {
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.page-about .about-versions__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.6) brightness(0.82);
}

/* ---------- 家庭收藏提示条 ---------- */
.page-about .about-note {
  margin: 30px 0 0;
  padding: 20px 22px;
  max-width: 42em;
  background: var(--zone-wine);
  border-left: 2px solid var(--ember);
}

.page-about .about-note__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ember);
}

.page-about .about-note__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
}

/* ---------- 工作节奏 ---------- */
.page-about .about-chapter--end {
  border-bottom: 0;
  padding-bottom: 72px;
  background:
    radial-gradient(90% 80% at 90% 10%, rgba(60, 242, 196, 0.08), transparent 65%),
    var(--ink);
}

.page-about .about-rhythm {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  max-width: 48em;
}

.page-about .about-rhythm li {
  display: grid;
  gap: 4px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .about-rhythm li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-rhythm__time {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mint-soft);
}

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-wrap {
    padding-inline: 32px;
  }

  .page-about .about-hero {
    padding-block: 56px 72px;
  }

  .page-about .about-chapter,
  .page-about .about-team {
    padding-block: 64px;
  }

  .page-about .about-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-rhythm li {
    grid-template-columns: 168px 1fr;
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about .about-chapter__inner {
    grid-template-columns: var(--about-spine) 1fr;
    gap: 36px;
  }

  .page-about .about-chapter__spine {
    display: block;
    position: relative;
    padding-top: 6px;
  }

  .page-about .about-chapter__spine::after {
    display: none;
  }

  .page-about .about-chapter__spine::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 44px;
    bottom: -64px;
    width: 1px;
    background: var(--line);
    transform: translateX(-50%);
  }

  .page-about .about-chapter__spine span {
    display: block;
    text-align: center;
    background: var(--ink);
    padding-block: 4px;
  }

  .page-about .about-chapter--process .about-chapter__spine span {
    background: transparent;
  }

  .page-about .about-chapter--end .about-chapter__spine::before {
    bottom: 0;
  }

  .page-about .about-cols {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 40px;
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: 4fr 8fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-team__list .about-num {
    font-size: 40px;
  }

  .page-about .about-versions {
    grid-template-columns: 1fr 0.62fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-texture {
    height: 380px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero {
    padding-block: 72px 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__list li,
  .page-about .about-team__list .about-num,
  .page-about .about-versions__list li,
  .page-about .about-versions__key {
    transition: none;
  }

  .page-about .about-versions__list li:hover {
    transform: none;
  }
}
<<<END>>>