.page-about {
  color: var(--bone-100);
  --about-line: rgba(232, 193, 112, 0.45);
  --about-line-soft: rgba(232, 193, 112, 0.14);
}

.page-about .shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--pad);
}

/* ---------- 面包屑 ---------- */
.page-about .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--bone-300);
  margin-bottom: clamp(20px, 4vw, 34px);
}

.page-about .crumbs a {
  color: var(--bone-300);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 240ms var(--ease), border-color 240ms var(--ease);
}

.page-about .crumbs a:hover {
  color: var(--gold-400);
  border-bottom-color: var(--gold-600);
}

.page-about .crumbs a:focus-visible {
  outline: 2px solid var(--gold-400);
  outline-offset: 3px;
  border-radius: var(--r-s);
}

.page-about .crumbs__sep {
  color: var(--gold-600);
}

.page-about .crumbs [aria-current="page"] {
  color: var(--gold-400);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--hairline-soft);
  background:
    radial-gradient(120% 90% at 88% 8%, rgba(232, 193, 112, 0.16), transparent 62%),
    radial-gradient(80% 70% at 4% 100%, rgba(200, 64, 47, 0.10), transparent 60%),
    var(--ink-900);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -18%;
  width: 74%;
  height: 108%;
  background: linear-gradient(138deg, rgba(232, 193, 112, 0.20), rgba(232, 193, 112, 0) 72%);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  padding-block: clamp(14px, 3vw, 30px) clamp(38px, 6vw, 76px);
}

.page-about .about-hero__kicker {
  margin: 0 0 clamp(14px, 2.4vw, 22px);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold-400);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.6vw, 3.9rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  max-width: 20ch;
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--gold-400);
}

.page-about .about-hero__lead {
  margin: clamp(18px, 3vw, 30px) 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--bone-300);
}

.page-about .about-stats {
  list-style: none;
  margin: clamp(26px, 4.5vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--hairline-soft);
  border: 1px solid var(--hairline-soft);
  border-radius: var(--r-m);
  overflow: hidden;
}

.page-about .about-stat {
  background: var(--ink-700);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 88px;
  justify-content: center;
}

.page-about .about-stat__num {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  line-height: 1;
  color: var(--gold-400);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stat__label {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.06em;
  color: var(--bone-300);
}

/* ---------- 通用章节 ---------- */
.page-about .about-section {
  position: relative;
  padding-block: clamp(46px, 7vw, 92px);
}

.page-about .about-section--band {
  background: linear-gradient(180deg, var(--ink-700), var(--ink-900));
  border-block: 1px solid var(--hairline-soft);
}

.page-about .about-section__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-section__head {
  max-width: 68ch;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-section__index {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-600);
}

.page-about .about-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
}

.page-about .about-section__lede {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--bone-300);
}

/* ---------- 时间轴 ---------- */
.page-about .about-texture {
  overflow: hidden;
}

.page-about .about-texture__layer {
  position: absolute;
  inset: 0;
  opacity: 0.09;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-texture__layer img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.55) contrast(1.1);
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 34px;
  position: relative;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold-400), var(--gold-600) 52%, var(--about-line-soft));
}

.page-about .tl__item {
  position: relative;
  padding-bottom: clamp(28px, 4vw, 44px);
  max-width: 68ch;
}

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

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 5px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--gold-400);
  background: var(--ink-900);
  box-shadow: 0 0 0 4px rgba(232, 193, 112, 0.07);
  transition: background 400ms var(--ease), box-shadow 400ms var(--ease);
}

.page-about .tl__item--done::before {
  background: var(--gold-400);
}

.page-about .tl__item--now::before {
  background: var(--gold-400);
  border-color: var(--bone-100);
  box-shadow: 0 0 0 5px rgba(47, 143, 114, 0.28);
}

.page-about .tl__era {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-400);
  font-variant-numeric: tabular-nums;
}

.page-about .tl__item--now .tl__era {
  color: var(--jade);
}

.page-about .tl__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  line-height: 1.35;
}

.page-about .tl__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--bone-300);
}

/* ---------- 团队分工 ---------- */
.page-about .team-layout {
  row-gap: clamp(26px, 4vw, 40px);
  align-items: start;
}

.page-about .team-figure {
  margin: 0;
}

.page-about .team-figure__frame {
  border-radius: var(--r-m);
  overflow: hidden;
  border: 1px solid var(--hairline);
  background: var(--ink-500);
}

.page-about .team-figure__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .media__cap {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--bone-300);
  letter-spacing: 0.02em;
}

.page-about .team-list {
  display: flex;
  flex-direction: column;
}

.page-about .team-item {
  border-top: 1px solid var(--hairline-soft);
  padding-block: 4px;
}

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

.page-about .team-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 16px;
  min-height: 44px;
  padding: 14px 0;
  padding-right: 26px;
  position: relative;
}

.page-about .team-item summary::-webkit-details-marker {
  display: none;
}

.page-about .team-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--gold-400);
}

.page-about .team-item[open] summary::after {
  content: "−";
}

.page-about .team-item summary:focus-visible {
  outline: 2px solid var(--gold-400);
  outline-offset: 3px;
  border-radius: var(--r-s);
}

.page-about .team-item__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--bone-100);
}

.page-about .team-item__role {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold-600);
}

.page-about .team-item__body {
  padding-bottom: 18px;
  max-width: 64ch;
}

.page-about .team-item__body p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--bone-300);
}

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

/* ---------- 节奏列表 ---------- */
.page-about .rhythm {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--hairline-soft);
  border: 1px solid var(--hairline-soft);
  border-radius: var(--r-m);
  overflow: hidden;
}

.page-about .rhythm__row {
  background: var(--ink-500);
  display: grid;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 26px);
}

.page-about .rhythm__num {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold-400);
  font-variant-numeric: tabular-nums;
  border-left: 2px solid var(--gold-600);
  padding-left: 10px;
  line-height: 1.4;
}

.page-about .rhythm__label {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1rem, 2vw, 1.15rem);
  line-height: 1.4;
}

.page-about .rhythm__text p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--bone-300);
  max-width: 66ch;
}

/* ---------- 三地协作 ---------- */
.page-about .about-banner {
  margin: 0 0 clamp(24px, 3.6vw, 38px);
}

.page-about .about-banner__frame {
  border-radius: var(--r-m);
  overflow: hidden;
  border: 1px solid var(--hairline);
  background: var(--ink-700);
}

.page-about .about-banner__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-about .tri-grid {
  display: grid;
  gap: 14px;
}

.page-about .tri-card {
  background: linear-gradient(160deg, rgba(36, 36, 47, 0.95), rgba(22, 22, 31, 0.95));
  border: 1px solid var(--hairline-soft);
  border-left: 3px solid var(--gold-600);
  border-radius: var(--r-m);
  padding: clamp(18px, 2.6vw, 24px);
}

.page-about .tri-card__city {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  line-height: 1.3;
  color: var(--bone-100);
}

.page-about .tri-card__fn {
  margin: 6px 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-400);
}

.page-about .tri-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--bone-300);
}

.page-about .tri-map {
  margin-top: clamp(26px, 4vw, 42px);
  line-height: 0;
  opacity: 0.9;
}

.page-about .tri-map svg {
  display: block;
  width: 100%;
  height: clamp(64px, 10vw, 120px);
}

/* ---------- 服务日常 ---------- */
.page-about .service {
  max-width: 100%;
}

.page-about .service__head {
  max-width: 68ch;
  margin-bottom: clamp(24px, 3.6vw, 36px);
}

.page-about .service__panel {
  background: linear-gradient(150deg, rgba(244, 239, 228, 0.08), rgba(244, 239, 228, 0.03));
  border: 1px solid var(--hairline);
  border-radius: var(--r-l);
  padding: clamp(20px, 3.4vw, 36px);
}

.page-about .service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .service-list li {
  display: grid;
  gap: 6px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--hairline-soft);
}

.page-about .service-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .service-list__k {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold-400);
  font-variant-numeric: tabular-nums;
  word-break: break-word;
}

.page-about .service-list__v {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--bone-300);
}

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

.page-about .about-note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--bone-300);
  max-width: 68ch;
}

.page-about .about-note a {
  color: var(--gold-400);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-600);
}

.page-about .about-note a:hover {
  color: var(--bone-100);
}

.page-about .about-note a:focus-visible {
  outline: 2px solid var(--gold-400);
  outline-offset: 3px;
  border-radius: var(--r-s);
}

/* ---------- 图片缓慢缩放 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .page-about .team-figure__frame img,
  .page-about .about-banner__frame img {
    transition: transform 600ms var(--ease);
  }

  .page-about .team-figure__frame:hover img,
  .page-about .about-banner__frame:hover img {
    transform: scale(1.02);
  }
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .rhythm__row {
    grid-template-columns: minmax(96px, 132px) 1fr;
    gap: 18px;
    align-items: start;
  }

  .page-about .tri-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .service-list li {
    grid-template-columns: minmax(140px, 210px) 1fr;
    gap: 18px;
    align-items: baseline;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-about .about-hero__inner {
    padding-block: clamp(20px, 2.4vw, 34px) clamp(56px, 6vw, 88px);
  }

  .page-about .tl {
    padding-left: 46px;
  }

  .page-about .tl::before {
    left: 11px;
    width: 2px;
  }

  .page-about .tl__item {
    padding-bottom: 46px;
  }

  .page-about .tl__item::before {
    left: -46px;
    width: 22px;
    height: 22px;
  }

  .page-about .tl__body {
    font-size: 16px;
  }

  .page-about .about-section__lede {
    font-size: 16px;
  }

  .page-about .team-item__body p,
  .page-about .rhythm__text p,
  .page-about .tri-card__text,
  .page-about .service-list__v {
    font-size: 15px;
  }
}
<<<PAGE_CSS_END>>>