.page-about {
  --about-line-w: 3px;
}

.page-about .section {
  padding-block: clamp(44px, 6vw, 86px);
}

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

/* 面包屑 */
.page-about .about-crumbs {
  padding-top: calc(var(--header-offset) + 16px);
}

.page-about .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
  color: var(--muted);
}

.page-about .crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--muted);
}

.page-about .crumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color .18s ease, color .18s ease;
}

.page-about .crumbs a:hover,
.page-about .crumbs a:focus-visible {
  color: var(--peel);
  border-bottom-color: var(--flesh);
}

.page-about .crumbs [aria-current="page"] {
  color: var(--peel);
  font-weight: 700;
}

/* 首屏 */
.page-about .about-hero {
  padding-top: clamp(16px, 3vw, 32px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

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

.page-about .about-hero__grid > * {
  min-width: 0;
}

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

.page-about h1 {
  margin: 16px 0 18px;
  font-size: clamp(32px, 5.4vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--peel);
}

.page-about .lede {
  margin: 0;
  max-width: 34em;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 20px;
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-left: 12px;
  border-left: var(--border-thin);
  line-height: 1.4;
  color: var(--muted);
  font-size: 14px;
}

.page-about .about-hero__facts .num {
  font-size: 26px;
  font-weight: 900;
  color: var(--peel);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-about .about-hero__panel {
  padding: clamp(20px, 3vw, 28px);
}

.page-about .about-hero__panel-title {
  margin: 0;
  font-weight: 900;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--peel);
}

.page-about .about-hero__panel ul {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-hero__panel a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border: var(--border-thin);
  border-radius: var(--r-sm);
  background: var(--panel);
  color: var(--peel);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease;
}

.page-about .about-hero__panel a::after {
  content: "→";
  flex: none;
  font-weight: 900;
  color: var(--flesh);
}

.page-about .about-hero__panel a:hover,
.page-about .about-hero__panel a:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-tight);
}

/* 起点 */
.page-about .about-origin__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: 5fr 7fr;
  }
}

.page-about .about-origin__fig {
  transform: rotate(-1.4deg);
}

.page-about .about-year {
  display: block;
  margin: 0 0 8px;
  font-size: clamp(52px, 9vw, 94px);
  font-weight: 900;
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--peel);
  font-variant-numeric: tabular-nums;
}

.page-about .about-origin__body h2 {
  margin: 0 0 16px;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--peel);
}

.page-about .about-origin__body p {
  margin: 0 0 14px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 36em;
}

.page-about .about-origin__marks {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

@media (min-width: 620px) {
  .page-about .about-origin__marks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-mark {
  padding: 14px 16px;
  border: var(--border-thin);
  border-radius: var(--r-md);
  background: var(--mint);
}

.page-about .about-mark__num {
  display: block;
  font-size: 20px;
  font-weight: 900;
  color: var(--peel);
  font-variant-numeric: tabular-nums;
}

.page-about .about-mark__txt {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
}

/* 通用章节头 */
.page-about .about-head {
  max-width: 36em;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-head h2 {
  margin: 10px 0 0;
  font-size: clamp(25px, 3.6vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--peel);
}

.page-about .about-head p {
  margin: 14px 0 0;
  line-height: 1.8;
  color: var(--muted);
}

/* 四件长期在做的事 */
.page-about .about-serve__grid {
  display: grid;
  gap: 18px;
}

@media (min-width: 880px) {
  .page-about .about-serve__grid {
    grid-template-columns: repeat(12, 1fr);
  }
  .page-about .about-svc--1 { grid-column: span 7; }
  .page-about .about-svc--2 { grid-column: span 5; }
  .page-about .about-svc--3 { grid-column: span 5; }
  .page-about .about-svc--4 { grid-column: span 7; }
}

.page-about .about-svc {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 3vw, 30px);
  border: var(--border);
  border-radius: var(--r-lg);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.page-about .about-svc--2 {
  background: var(--mint);
}

.page-about .about-svc--3 {
  background: var(--ink);
  color: var(--paper);
}

.page-about .about-svc__no {
  align-self: flex-start;
  padding: 5px 12px;
  border: var(--border-thin);
  border-radius: var(--r-pill);
  background: var(--paper);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--peel);
}

.page-about .about-svc--3 .about-svc__no {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--ink);
}

.page-about .about-svc h3 {
  margin: 0;
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--peel);
}

.page-about .about-svc--3 h3 {
  color: var(--paper);
}

.page-about .about-svc p {
  margin: 0;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-svc--3 p {
  color: rgba(246, 245, 238, 0.84);
}

.page-about .about-svc .ghost-link {
  margin-top: auto;
}

.page-about .about-svc--3 .ghost-link {
  color: var(--neon);
}

/* 团队 */
.page-about .about-team__panel {
  padding: clamp(24px, 4vw, 52px);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

@media (min-width: 940px) {
  .page-about .about-team__grid {
    grid-template-columns: 6fr 6fr;
    align-items: start;
  }
}

.page-about .panel--ink h2 {
  margin: 12px 0 16px;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .panel--ink .eyebrow {
  color: var(--neon);
}

.page-about .about-team__copy > p {
  margin: 0;
  line-height: 1.8;
  color: rgba(246, 245, 238, 0.84);
}

.page-about .team-chart {
  width: 100%;
  height: auto;
  margin-top: 24px;
}

.page-about .team-chart__label {
  fill: #F6F5EE;
  font-size: 15px;
  font-family: var(--font-sans);
}

.page-about .team-chart__num {
  fill: #C8FF4D;
  font-size: 15px;
  font-weight: 700;
  font-family: var(--font-sans);
  font-variant-numeric: tabular-nums;
}

.page-about .team-chart__bar {
  fill: var(--flesh);
  transition: fill .2s ease;
}

.page-about .team-chart__row:hover .team-chart__bar {
  fill: var(--neon);
}

.page-about .about-team__acc {
  display: grid;
  gap: 10px;
  margin-top: 26px;
}

.page-about .about-team__acc .acc__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: transparent;
  border: var(--border-thin);
  border-color: rgba(246, 245, 238, 0.32);
  border-radius: var(--r-sm);
  color: var(--paper);
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease;
}

.page-about .about-team__acc .acc__trigger:hover {
  border-color: var(--neon);
}

.page-about .about-team__acc .acc__trigger[aria-expanded="true"] {
  background: rgba(200, 255, 77, 0.14);
  border-color: var(--neon);
}

.page-about .about-team__acc .acc__icon {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.page-about .about-team__acc .acc__icon::before,
.page-about .about-team__acc .acc__icon::after {
  content: "";
  position: absolute;
  background: var(--neon);
  border-radius: 2px;
  transition: transform .2s ease;
}

.page-about .about-team__acc .acc__icon::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-about .about-team__acc .acc__icon::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-about .about-team__acc .acc__trigger[aria-expanded="true"] .acc__icon::after {
  transform: scaleY(0);
}

.page-about .about-team__acc .acc__panel-inner {
  padding: 12px 2px 18px;
  line-height: 1.8;
  color: rgba(246, 245, 238, 0.84);
  font-size: 15px;
}

.page-about .about-team__side {
  display: grid;
  gap: 20px;
}

.page-about .about-team__fig {
  transform: rotate(1deg);
}

.page-about .about-team__flow {
  padding: 20px 22px;
  border: var(--border-thin);
  border-color: rgba(246, 245, 238, 0.32);
  border-radius: var(--r-md);
}

.page-about .about-team__flow-title {
  margin: 0 0 12px;
  font-weight: 900;
  font-size: 17px;
  color: var(--neon);
}

.page-about .about-team__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-team__steps li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(246, 245, 238, 0.84);
}

.page-about .about-team__steps span {
  flex: none;
  font-weight: 900;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

/* 版本时间线 */
.page-about .about-tl {
  position: relative;
  display: grid;
  gap: 18px;
  padding-left: 28px;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 18px;
  bottom: 18px;
  width: var(--about-line-w);
  background: var(--line);
  border-radius: 2px;
}

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

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 22px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--neon);
  border: 3px solid var(--line);
  z-index: 1;
}

.page-about .about-tl__trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: var(--panel);
  border: var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-tight);
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease;
}

.page-about .about-tl__trigger:hover,
.page-about .about-tl__trigger:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-soft);
}

.page-about .about-tl__trigger[aria-expanded="true"] {
  background: var(--mint);
}

.page-about .about-tl__year {
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--peel);
  font-variant-numeric: tabular-nums;
}

.page-about .about-tl__title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--peel);
}

.page-about .about-tl__trigger .acc__icon {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.page-about .about-tl__trigger .acc__icon::before,
.page-about .about-tl__trigger .acc__icon::after {
  content: "";
  position: absolute;
  background: var(--peel);
  border-radius: 2px;
  transition: transform .2s ease;
}

.page-about .about-tl__trigger .acc__icon::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-about .about-tl__trigger .acc__icon::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-about .about-tl__trigger[aria-expanded="true"] .acc__icon::after {
  transform: scaleY(0);
}

.page-about .about-tl .acc__panel-inner {
  padding: 16px 18px 20px;
  line-height: 1.8;
  color: var(--muted);
  font-size: 15px;
  background: var(--paper);
  border: var(--border-thin);
  border-top: none;
  border-radius: 0 0 var(--r-md) var(--r-md);
}

/* 合作 */
.page-about .about-partners__grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

@media (min-width: 860px) {
  .page-about .about-partners__grid {
    grid-template-columns: 6fr 6fr;
  }
}

.page-about .about-partner {
  padding: clamp(22px, 3vw, 32px);
  border: var(--border);
  border-radius: var(--r-lg);
  background: var(--mint);
  box-shadow: var(--shadow-soft);
}

.page-about .about-partner--alt {
  background: var(--panel);
}

.page-about .about-partner h3 {
  margin: 0 0 14px;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--peel);
}

.page-about .about-partner p {
  margin: 0 0 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-partner__note {
  padding-left: 14px;
  border-left: var(--border-thin);
  font-size: 15px;
}

.page-about .about-partner .ghost-link {
  margin-top: 6px;
}

/* 查看顺序 */
.page-about .about-path-head {
  display: grid;
  gap: clamp(22px, 3vw, 38px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-about .about-path-head {
    grid-template-columns: 7fr 5fr;
  }
}

.page-about .about-path-head .about-head {
  margin-bottom: 0;
}

.page-about .about-path__fig {
  transform: rotate(1.3deg);
}

.page-about .about-path {
  list-style: none;
  margin: clamp(30px, 4vw, 48px) 0 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

@media (min-width: 880px) {
  .page-about .about-path {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }
}

.page-about .about-path__step {
  position: relative;
  padding: clamp(20px, 3vw, 28px);
  border: var(--border);
  border-radius: var(--r-lg);
  background: var(--mint);
  box-shadow: var(--shadow-soft);
}

.page-about .about-path__step:nth-child(2) {
  background: var(--panel);
}

@media (min-width: 880px) {
  .page-about .about-path__step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 46px;
    right: -30px;
    width: 30px;
    height: 3px;
    background: var(--line);
  }
}

.page-about .about-path__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 44px;
  padding: 0 12px;
  border: var(--border-thin);
  border-radius: var(--r-pill);
  background: var(--neon);
  font-size: 18px;
  font-weight: 900;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.page-about .about-path__step h3 {
  margin: 14px 0 10px;
  font-size: 20px;
  line-height: 1.35;
  color: var(--peel);
}

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

.page-about .about-path__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* 结尾面板 */
.page-about .about-cta__panel {
  padding: clamp(26px, 4vw, 52px);
}

.page-about .about-cta__panel h2 {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .about-cta__panel p {
  margin: 0 0 24px;
  max-width: 40em;
  line-height: 1.8;
  color: var(--ink);
}

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

@media (max-width: 560px) {
  .page-about .about-hero__facts {
    grid-template-columns: 1fr;
  }
  .page-about .about-tl {
    padding-left: 22px;
  }
  .page-about .about-tl__trigger {
    grid-template-columns: 1fr auto;
    row-gap: 6px;
  }
  .page-about .about-tl__year {
    font-size: 21px;
  }
}
<<<END>>>