.page-about {
  --about-side: 214px;
  --about-muted: #5A6270;
  --about-rule: rgba(27, 31, 39, .14);
  --about-card-rule: rgba(27, 31, 39, .1);
  background: var(--paper);
  color: var(--text-light);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    radial-gradient(122% 138% at 88% -14%, rgba(232, 178, 58, .2) 0%, rgba(232, 178, 58, 0) 58%),
    linear-gradient(180deg, #0B0E13 0%, #111721 100%);
  color: var(--text-dark);
  padding-bottom: clamp(44px, 7vw, 88px);
}

.page-about .about-hero__ring {
  position: absolute;
  top: -22%;
  right: -14%;
  width: min(720px, 92vw);
  height: auto;
  color: rgba(232, 178, 58, .34);
  pointer-events: none;
  z-index: -1;
}

.page-about .about-hero__inner {
  position: relative;
  padding-top: clamp(20px, 3.4vw, 32px);
}

.page-about .about-hero__crumbs .breadcrumbs__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .04em;
}

.page-about .about-hero__crumbs .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: rgba(245, 247, 250, .34);
}

.page-about .about-hero__crumbs .breadcrumbs__link {
  color: rgba(245, 247, 250, .68);
  text-decoration: none;
}

.page-about .about-hero__crumbs .breadcrumbs__link:hover,
.page-about .about-hero__crumbs .breadcrumbs__link:focus-visible {
  color: var(--gold-glow);
}

.page-about .about-hero__crumbs .breadcrumbs__current {
  color: var(--gold-glow);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  margin-top: clamp(24px, 4vw, 44px);
}

.page-about .about-hero__lead .eyebrow {
  color: var(--gold);
  margin: 0;
}

.page-about .about-hero h1 {
  font-family: var(--font-editorial);
  font-weight: 700;
  font-size: clamp(34px, 6.4vw, 62px);
  line-height: 1.1;
  letter-spacing: -.02em;
  margin: 14px 0 18px;
  color: var(--text-dark);
  max-width: 18ch;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 42ch;
  color: rgba(245, 247, 250, .82);
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.85;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3.4vw, 32px);
}

.page-about .about-hero__facts {
  align-self: end;
  border-radius: var(--r-md);
  padding: 20px 20px 22px;
}

.page-about .about-hero__facts .panel__label {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-about .about-facts {
  display: grid;
  gap: 14px;
  margin: 0;
}

.page-about .about-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(245, 247, 250, .12);
}

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

.page-about .about-facts dt {
  font-size: 13px;
  letter-spacing: .06em;
  color: rgba(245, 247, 250, .6);
}

.page-about .about-facts dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-about .about-facts .data-num {
  font-family: var(--font-data);
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1;
  color: var(--gold-glow);
}

.page-about .about-facts__unit {
  font-size: 13px;
  color: rgba(245, 247, 250, .68);
}

.page-about .about-facts__time {
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--gold-glow);
}

/* ---------- 正文骨架 ---------- */

.page-about .about-body {
  padding: clamp(46px, 7vw, 92px) 0 clamp(40px, 6vw, 78px);
}

.page-about .about-body__grid {
  display: grid;
  gap: clamp(30px, 5vw, 54px);
}

.page-about .about-body__main {
  min-width: 0;
}

/* 章节目录 */

.page-about .about-toc__inner {
  border-top: 2px solid var(--gold);
  padding-top: 14px;
}

.page-about .about-toc__inner .panel__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--about-muted);
}

.page-about .about-toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.page-about .about-toc__link {
  display: inline-block;
  padding: 4px 0;
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--about-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--text-light);
  border-bottom-color: var(--gold);
}

.page-about .about-toc__link[aria-current="true"],
.page-about .about-toc__link.is-active {
  color: var(--text-light);
  font-weight: 700;
  border-bottom-color: var(--gold);
}

/* ---------- 章节通用 ---------- */

.page-about .about-chapter + .about-chapter {
  margin-top: clamp(52px, 8vw, 104px);
}

.page-about .about-chapter__head {
  max-width: 46rem;
}

.page-about .about-chapter__head .eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: .18em;
  color: #8A6410;
}

.page-about .about-chapter__head .section-title {
  font-family: var(--font-editorial);
  font-weight: 700;
  font-size: clamp(25px, 4.1vw, 38px);
  line-height: 1.22;
  letter-spacing: -.01em;
  margin: 10px 0 0;
  color: var(--text-light);
}

.page-about .about-chapter__lede {
  margin: 14px 0 0;
  color: var(--about-muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-chapter__body {
  margin-top: clamp(20px, 3vw, 28px);
  max-width: 44rem;
}

.page-about .about-chapter__body p {
  margin: 0 0 1.1em;
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.9;
  color: #232830;
}

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

/* ---------- 折叠长文 ---------- */

.page-about .about-more {
  margin-top: clamp(22px, 3vw, 30px);
  border-left: 3px solid var(--gold);
  background: rgba(255, 253, 247, .78);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  padding: 4px 18px 4px 18px;
}

.page-about .about-more__summary {
  cursor: pointer;
  padding: 14px 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .01em;
  color: var(--text-light);
  list-style: none;
}

.page-about .about-more__summary::-webkit-details-marker {
  display: none;
}

.page-about .about-more__summary::after {
  content: "＋";
  float: right;
  font-family: var(--font-data);
  color: var(--gold);
}

.page-about .about-more[open] .about-more__summary::after {
  content: "－";
}

.page-about .about-more__body {
  padding-bottom: 12px;
}

.page-about .about-more__body p {
  margin: 0 0 1em;
  font-size: 15px;
  line-height: 1.85;
  color: #313844;
}

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

/* ---------- 图片 ---------- */

.page-about .about-figure {
  margin: clamp(26px, 4vw, 42px) 0 0;
}

.page-about .about-figure--flush {
  margin-top: 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-md);
  object-fit: cover;
  background: var(--ink-layer);
}

.page-about .about-figure__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--about-muted);
  letter-spacing: .02em;
}

/* ---------- 能力演进步骤 ---------- */

.page-about .about-steps {
  list-style: none;
  margin: clamp(28px, 4vw, 42px) 0 0;
  padding: 0;
  border-top: 1px solid var(--about-rule);
}

.page-about .about-steps__item {
  display: grid;
  gap: 8px 22px;
  padding: 22px 0;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-steps__num {
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: .08em;
  color: #8A6410;
  padding-top: 4px;
}

.page-about .about-steps__content {
  min-width: 0;
}

.page-about .about-steps__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.2vw, 20px);
  font-weight: 700;
  letter-spacing: -.005em;
  color: var(--text-light);
}

.page-about .about-steps__content p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: #3A414C;
}

/* ---------- 团队卡片 ---------- */

.page-about .about-roles {
  display: grid;
  gap: 16px;
  margin-top: clamp(26px, 4vw, 40px);
}

.page-about .about-role {
  background: var(--paper-card);
  border-top: 3px solid var(--gold);
  border-radius: 0 0 var(--r-md) var(--r-md);
  padding: 22px 20px 24px;
  box-shadow: 0 1px 0 rgba(27, 31, 39, .07);
}

.page-about .about-role--green {
  border-top-color: var(--green);
}

.page-about .about-role--blue {
  border-top-color: var(--blue);
}

.page-about .about-role__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--text-light);
}

.page-about .about-role__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: #3A414C;
}

/* ---------- 大事记时间轴 ---------- */

.page-about .about-timeline {
  background:
    radial-gradient(90% 70% at 100% 0%, rgba(232, 178, 58, .14) 0%, rgba(232, 178, 58, 0) 62%),
    var(--space-black);
  color: var(--text-dark);
  border-radius: var(--r-lg);
  padding: clamp(26px, 5vw, 52px) clamp(20px, 4vw, 48px);
}

.page-about .about-chapter__head--dark .eyebrow {
  color: var(--gold);
}

.page-about .about-chapter__head--dark .section-title {
  color: var(--text-dark);
}

.page-about .about-chapter__head--dark .about-chapter__lede {
  color: rgba(245, 247, 250, .7);
}

.page-about .about-tl {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0 0 0 26px;
  position: relative;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold) 0%, rgba(232, 178, 58, .16) 100%);
}

.page-about .about-tl__item {
  position: relative;
  padding: 0 0 clamp(26px, 3.6vw, 36px);
}

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

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--space-black);
  border: 2px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(232, 178, 58, .16);
}

.page-about .about-tl__item .tag {
  display: inline-block;
  margin-bottom: 10px;
}

.page-about .about-tl__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(16px, 2.1vw, 19px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-dark);
}

.page-about .about-tl__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(245, 247, 250, .74);
}

/* ---------- 服务范围 ---------- */

.page-about .about-region {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(24px, 3.6vw, 38px);
}

.page-about .about-region__text p {
  margin: 0 0 1.1em;
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.9;
  color: #232830;
}

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

.page-about .about-contactcard {
  margin-top: 22px;
  background: var(--paper-card);
  border: 1px solid var(--about-card-rule);
  border-left: 4px solid var(--green);
  border-radius: var(--r-sm);
  padding: 20px 20px 18px;
}

.page-about .about-contactcard .panel__label {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--about-muted);
}

.page-about .about-contactcard__list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.page-about .about-contactcard__row {
  display: grid;
  gap: 3px;
}

.page-about .about-contactcard__row dt {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--about-muted);
}

.page-about .about-contactcard__row dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text-light);
  word-break: break-word;
}

.page-about .about-contactcard__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--about-card-rule);
  font-size: 13px;
  line-height: 1.7;
  color: var(--about-muted);
}

/* ---------- 收束区 ---------- */

.page-about .about-end {
  position: relative;
  background: var(--space-black);
  color: var(--text-dark);
  padding: clamp(46px, 6.4vw, 82px) 0;
}

.page-about .about-end::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--green) 42%, var(--blue) 74%, var(--orange) 100%);
}

.page-about .about-end__inner {
  max-width: 46rem;
}

.page-about .about-end .eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-about .about-end__title {
  margin: 12px 0 14px;
  font-family: var(--font-editorial);
  font-size: clamp(24px, 3.8vw, 36px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--text-dark);
}

.page-about .about-end__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(245, 247, 250, .76);
}

.page-about .about-end__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3.4vw, 30px);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-steps__item {
    grid-template-columns: 56px minmax(0, 1fr);
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(262px, .95fr);
    align-items: end;
  }

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

  .page-about .about-region {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .about-body__grid {
    grid-template-columns: minmax(0, 1fr) var(--about-side);
    gap: clamp(38px, 5vw, 72px);
  }

  .page-about .about-body__side {
    position: relative;
  }

  .page-about .about-toc {
    position: sticky;
    top: calc(var(--header-offset) + 22px);
  }

  .page-about .about-toc__list {
    display: block;
  }

  .page-about .about-toc__item + .about-toc__item {
    margin-top: 2px;
  }

  .page-about .about-toc__link {
    display: block;
    padding: 7px 0;
  }
}

@media (max-width: 959px) {
  .page-about .about-toc__inner {
    padding-bottom: 12px;
    border-bottom: 1px solid var(--about-rule);
  }
}

@media (max-width: 420px) {
  .page-about .about-hero__actions .btn,
  .page-about .about-end__actions .btn {
    width: 100%;
    text-align: center;
  }

  .page-about .about-timeline {
    border-radius: var(--r-md);
    padding-left: 18px;
    padding-right: 18px;
  }

  .page-about .about-tl {
    padding-left: 22px;
  }

  .page-about .about-tl__item::before {
    left: -22px;
  }
}
<<<END>>>