.page-about {
  --about-hair: 1px solid var(--metal);
  --about-gap: clamp(20px, 3.4vw, 44px);
  display: block;
}

.page-about .breadcrumbs {
  padding-top: clamp(16px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 52px) 0 clamp(40px, 6vw, 80px);
}

.page-about .about-hero::before,
.page-about .about-hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero::before {
  width: min(680px, 82vw);
  height: min(680px, 82vw);
  top: -40%;
  right: -16%;
  background: radial-gradient(circle, rgba(55, 225, 232, .17), transparent 66%);
}

.page-about .about-hero::after {
  width: min(560px, 72vw);
  height: min(560px, 72vw);
  bottom: -48%;
  left: -20%;
  background: radial-gradient(circle, rgba(200, 16, 46, .2), transparent 68%);
}

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

.page-about .about-hero__title {
  margin: clamp(12px, 2vw, 20px) 0 0;
  font-size: clamp(38px, 8.4vw, 100px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--bright);
}

.page-about .about-hero__lede {
  max-width: 62ch;
  margin-top: clamp(16px, 2.6vw, 28px);
  color: var(--mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-about .about-hero__visual {
  margin-top: clamp(28px, 5vw, 60px);
  border: var(--about-hair);
  background: var(--ink);
  overflow: hidden;
}

.page-about .about-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

/* ---------- 起点 ---------- */

.page-about .about-origin {
  padding: clamp(44px, 7vw, 96px) 0;
  border-top: var(--about-hair);
}

.page-about .about-origin__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-origin__body p {
  margin: 0 0 1.2em;
  color: var(--mist);
}

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

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

/* ---------- 时间线 ---------- */

.page-about .about-timeline {
  padding: clamp(44px, 7vw, 96px) 0;
  border-top: var(--about-hair);
}

.page-about .about-timeline__list {
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: clamp(12px, 2vw, 22px);
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 16px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(55, 225, 232, .1) 58%, transparent);
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 28px);
  padding: clamp(14px, 2.2vw, 22px) clamp(14px, 2vw, 24px) clamp(14px, 2.2vw, 22px) 0;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: background var(--ease), border-color var(--ease), transform var(--ease);
}

.page-about .about-timeline__item:hover,
.page-about .about-timeline__item:focus-within {
  background: rgba(22, 32, 58, .6);
  border-color: var(--cyan-deep);
  transform: translateY(-2px);
}

.page-about .about-timeline__num {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--cyan-deep);
  background: var(--midnight);
  color: var(--cyan);
  font-size: 14px;
  transition: border-color var(--ease), color var(--ease), background var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__num,
.page-about .about-timeline__item:focus-within .about-timeline__num {
  border-color: var(--cyan);
  color: var(--bright);
  background: var(--ink);
}

.page-about .about-timeline__body h3 {
  margin: 0 0 8px;
  color: var(--bright);
}

.page-about .about-timeline__body p {
  margin: 0;
  color: var(--mist);
  line-height: 1.8;
  max-width: 68ch;
}

.page-about .about-quote {
  margin: clamp(30px, 5vw, 60px) 0 0;
  padding: clamp(20px, 3.2vw, 38px) clamp(18px, 3vw, 36px);
  border-left: 3px solid var(--orange);
  background: linear-gradient(90deg, rgba(255, 138, 61, .09), transparent 74%);
}

.page-about .about-quote p {
  margin: 0;
  max-width: 44ch;
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.5vw, 28px);
  line-height: 1.6;
  color: var(--bright);
}

/* ---------- 团队（奶油纸底） ---------- */

.page-about .about-team {
  position: relative;
  padding: clamp(48px, 7vw, 100px) 0;
  background: var(--paper);
  color: var(--brown);
}

.page-about .about-team::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: linear-gradient(90deg, var(--sichuan), var(--orange) 34%, var(--cyan) 70%, transparent);
}

.page-about .about-team .label {
  color: var(--sichuan);
}

.page-about .about-team__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-team__title {
  margin: clamp(10px, 1.6vw, 16px) 0 0;
  color: var(--brown);
}

.page-about .about-team__text {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 52ch;
  color: #4A3B31;
  line-height: 1.88;
}

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid rgba(36, 28, 22, .18);
}

.page-about .about-team__caption {
  margin-top: 10px;
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.7;
  color: #6B5A4C;
}

@media (min-width: 960px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

.page-about .about-night {
  list-style: none;
  margin: clamp(30px, 4.4vw, 52px) 0 0;
  padding: 0;
  border-top: 1px solid rgba(36, 28, 22, .22);
}

.page-about .about-night__item {
  display: grid;
  gap: 6px;
  padding: clamp(14px, 2vw, 20px) 0;
  border-bottom: 1px solid rgba(36, 28, 22, .22);
}

.page-about .about-night__time {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--sichuan);
}

.page-about .about-night__body {
  margin: 0;
  color: #3C3028;
  line-height: 1.82;
  max-width: 70ch;
}

@media (min-width: 760px) {
  .page-about .about-night__item {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: clamp(16px, 3vw, 40px);
    align-items: baseline;
  }
}

/* ---------- 服务半径 ---------- */

.page-about .about-radiate {
  padding: clamp(44px, 7vw, 96px) 0;
  border-top: var(--about-hair);
}

.page-about .about-radiate__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-radiate__intro {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 58ch;
  color: var(--mist);
  line-height: 1.85;
}

.page-about .about-radiate__list {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-radiate__city-item {
  display: grid;
  gap: 4px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(58, 71, 97, .8);
  font-size: 15px;
  line-height: 1.7;
}

.page-about .about-radiate__city-item b {
  color: var(--cyan);
  font-family: var(--font-mono);
  letter-spacing: .04em;
}

.page-about .about-radiate__city-item span {
  color: var(--mist);
}

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

.page-about .about-radiate__map {
  display: block;
  width: 100%;
  height: auto;
  border: var(--about-hair);
  background: radial-gradient(circle at 39% 61%, rgba(55, 225, 232, .1), transparent 62%), var(--midnight);
}

.page-about .about-radiate__rings circle {
  fill: none;
  stroke: var(--metal);
  stroke-width: 1;
  stroke-dasharray: 3 7;
  opacity: .9;
}

.page-about .about-radiate__dots circle {
  fill: var(--metal);
}

.page-about .about-radiate__city circle {
  fill: var(--cyan);
  stroke: rgba(55, 225, 232, .3);
  stroke-width: 7;
  transition: fill var(--ease), stroke var(--ease);
}

.page-about .about-radiate__city text {
  fill: var(--mist);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  transition: fill var(--ease);
}

.page-about .about-radiate__city:hover circle {
  fill: var(--orange);
  stroke: rgba(255, 138, 61, .28);
}

.page-about .about-radiate__city:hover text {
  fill: var(--bright);
}

.page-about .about-radiate__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

@media (min-width: 960px) {
  .page-about .about-radiate__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
  }
}

/* ---------- 视觉语言 ---------- */

.page-about .about-visual {
  padding: clamp(44px, 7vw, 96px) 0;
  border-top: var(--about-hair);
}

.page-about .about-visual__grid {
  display: grid;
  gap: var(--about-gap);
  margin-top: clamp(26px, 4vw, 46px);
}

.page-about .about-visual__panel:first-child {
  border: var(--about-hair);
  background: rgba(22, 32, 58, .58);
  padding: clamp(20px, 3vw, 32px);
}

.page-about .about-visual__panel:last-child {
  padding: clamp(4px, 1vw, 10px) 0 0;
}

.page-about .about-visual__panel h3 {
  margin: 0 0 12px;
  color: var(--bright);
}

.page-about .about-visual__panel p {
  margin: 0 0 1.1em;
  color: var(--mist);
  line-height: 1.85;
  max-width: 58ch;
}

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

.page-about .about-palette {
  list-style: none;
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-palette__item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-palette__chip {
  width: 20px;
  height: 20px;
  border-radius: 2px;
  background: var(--chip, var(--metal));
  border: 1px solid rgba(234, 243, 255, .2);
}

.page-about .about-palette__name {
  color: var(--bright);
  font-weight: 600;
  margin-right: 4px;
}

.page-about .about-palette__item--night { --chip: #0B1220; }
.page-about .about-palette__item--cyan { --chip: #37E1E8; }
.page-about .about-palette__item--orange { --chip: #FF8A3D; }
.page-about .about-palette__item--sichuan { --chip: #C8102E; }
.page-about .about-palette__item--paper { --chip: #F3ECDF; }

@media (min-width: 900px) {
  .page-about .about-visual__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }
}

/* ---------- 接下来 ---------- */

.page-about .about-next {
  padding: clamp(44px, 7vw, 96px) 0 clamp(52px, 7vw, 104px);
  border-top: var(--about-hair);
}

.page-about .about-next__list {
  list-style: none;
  margin: clamp(24px, 4vw, 42px) 0 0;
  padding: 0;
  border-top: var(--about-hair);
}

.page-about .about-next__item {
  display: grid;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 28px) 0;
  border-bottom: var(--about-hair);
}

.page-about .about-next__idx {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-about .about-next__item h3 {
  margin: 0;
  color: var(--bright);
}

.page-about .about-next__item p {
  margin: 0;
  color: var(--mist);
  line-height: 1.85;
  max-width: 66ch;
}

@media (min-width: 880px) {
  .page-about .about-next__item {
    grid-template-columns: 56px minmax(0, 240px) minmax(0, 1fr);
    gap: clamp(16px, 3vw, 40px);
    align-items: baseline;
  }
}

.page-about .about-next__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(26px, 4vw, 44px);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__item,
  .page-about .about-timeline__num,
  .page-about .about-radiate__city circle,
  .page-about .about-radiate__city text {
    transition: none;
  }

  .page-about .about-timeline__item:hover,
  .page-about .about-timeline__item:focus-within {
    transform: none;
  }
}
<<<END>>>