.page-about {
  --about-gap: clamp(20px, 3vw, 32px);
  --about-sect: clamp(52px, 9vh, 104px);
  background: var(--paper);
  color: var(--text);
  overflow-x: hidden;
}

.page-about .wrap {
  padding-inline: var(--pad);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  background: var(--ink-900);
  color: var(--paper);
  padding: clamp(38px, 7vh, 76px) 0 clamp(56px, 9vh, 96px);
  border-radius: 0 0 var(--r-lg) var(--r-lg);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% 0 -10%;
  background:
    radial-gradient(70% 62% at 86% 8%, rgba(30, 134, 184, 0.42), transparent 66%),
    radial-gradient(58% 54% at 4% 96%, rgba(183, 242, 74, 0.12), transparent 62%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -12%;
  top: 22%;
  width: 130%;
  height: 220px;
  background: linear-gradient(100deg, transparent 0%, rgba(95, 184, 216, 0.16) 34%, rgba(30, 134, 184, 0.06) 62%, transparent 100%);
  transform: rotate(-7deg);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
}

.page-about .about-hero .eyebrow {
  color: var(--teal-400);
}

.page-about .about-hero__title {
  margin: 14px 0 18px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2.05rem, 7vw, 4.3rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: #fff;
  max-width: 16em;
}

.page-about .about-hero__lede {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(244, 250, 253, 0.82);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 5vh, 44px);
  background: var(--hairline);
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px 18px;
  background: var(--ink-900);
}

.page-about .about-hero__stats .stat__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.6vw, 2.35rem);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

.page-about .about-hero__stats .stat__unit {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: rgba(244, 250, 253, 0.62);
}

.page-about .about-hero__track {
  position: relative;
  z-index: 2;
  margin: clamp(26px, 5vh, 42px) var(--pad) 0;
  height: 2px;
  background: linear-gradient(90deg, rgba(95, 184, 216, 0.5), rgba(183, 242, 74, 0.4));
  border-radius: var(--pill);
}

.page-about .about-hero__node {
  position: absolute;
  top: 50%;
  left: var(--x, 50%);
  width: 10px;
  height: 10px;
  margin-top: -5px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--teal-400);
}

.page-about .about-hero__node--live {
  background: var(--live);
  border-color: var(--live);
  box-shadow: 0 0 0 5px rgba(183, 242, 74, 0.16);
}

/* ---------- 通用分区 ---------- */
.page-about .about-section {
  padding: var(--about-sect) 0;
}

.page-about .about-section--timeline,
.page-about .about-section--cred {
  background: var(--mist);
}

.page-about .about-section--network {
  background: linear-gradient(180deg, var(--paper) 0%, #e8f4fa 100%);
}

.page-about .about-section--partners {
  background: var(--paper);
}

.page-about .about-section--culture {
  background: var(--ink-900);
  color: var(--paper);
  border-radius: var(--r-lg);
  margin: 0 clamp(8px, 2vw, 22px);
}

.page-about .about-section--culture .section-head__key {
  color: var(--teal-400);
}

.page-about .about-section--culture .section-head__title {
  color: #fff;
}

/* ---------- 品牌简介 ---------- */
.page-about .profile__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .profile__lead {
  margin: 0 0 18px;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.7;
  font-weight: 700;
  color: var(--teal-700);
}

.page-about .profile__text p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-2);
  max-width: 70ch;
}

.page-about .profile__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

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

.page-about .profile__media .media {
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}

.page-about .media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .media__caption {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-2);
}

/* ---------- 时间线 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .tl-item {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 0 16px;
  padding-bottom: 26px;
  position: relative;
}

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

.page-about .tl-mark {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding-top: 6px;
}

.page-about .tl-mark::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 8px;
  bottom: -26px;
  width: 2px;
  margin-left: -1px;
  background: var(--line-2);
  z-index: 0;
}

.page-about .tl-item:last-child .tl-mark::before {
  display: none;
}

.page-about .tl-year {
  position: relative;
  z-index: 1;
  order: 2;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--teal-700);
  background: var(--mist);
  padding: 3px 6px;
  border-radius: var(--r-sm);
  text-decoration: none;
}

.page-about .tl-year:hover,
.page-about .tl-year:focus-visible {
  color: var(--accent);
}

.page-about .tl-dot {
  position: relative;
  z-index: 1;
  order: 1;
  width: 14px;
  height: 14px;
  flex: none;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(255, 106, 26, 0.15);
}

.page-about .tl-dot--live {
  background: var(--teal-600);
  box-shadow: 0 0 0 5px rgba(30, 134, 184, 0.18);
}

.page-about .tl-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 20px 20px 22px;
  box-shadow: var(--sh-1);
  transition: transform 240ms ease, box-shadow 240ms ease;
}

.page-about .tl-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--sh-2);
}

.page-about .tl-card--now {
  border-color: rgba(255, 106, 26, 0.42);
  background: linear-gradient(160deg, #fff 0%, #fff4ec 100%);
}

.page-about .tl-stage {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.page-about .tl-card .card__title {
  margin: 0 0 10px;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.4;
  font-weight: 800;
  color: var(--text);
}

.page-about .tl-card p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-2);
}

/* ---------- 人员结构 ---------- */
.page-about .team-layout {
  display: grid;
  gap: var(--about-gap);
}

.page-about .team-figure {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: clamp(20px, 3vw, 30px);
  box-shadow: var(--sh-1);
}

.page-about .team-figure__num {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 20px;
}

.page-about .team-figure__num .num {
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 8vw, 3.6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--teal-700);
}

.page-about .team-figure__unit {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-2);
}

.page-about .team-bar {
  display: flex;
  height: 34px;
  border-radius: var(--pill);
  overflow: hidden;
  gap: 3px;
  background: var(--mist);
}

.page-about .team-bar__seg {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
}

.page-about .team-bar__seg--front {
  flex: 0 0 70%;
  background: linear-gradient(90deg, var(--accent), var(--accent-soft));
}

.page-about .team-bar__seg--back {
  flex: 1 1 auto;
  background: linear-gradient(90deg, var(--teal-600), var(--teal-400));
}

.page-about .team-bar__seg:hover .team-bar__txt {
  opacity: 1;
}

.page-about .team-bar__txt {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #fff;
  white-space: nowrap;
  opacity: 0.94;
}

.page-about .team-legend {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .team-legend__item {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr) auto;
  gap: 4px 10px;
  align-items: center;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

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

.page-about .team-legend__key {
  width: 12px;
  height: 12px;
  border-radius: 4px;
}

.page-about .team-legend__key--front {
  background: var(--accent);
}

.page-about .team-legend__key--back {
  background: var(--teal-600);
}

.page-about .team-legend__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.page-about .team-legend__pct {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--teal-700);
  font-variant-numeric: tabular-nums;
}

.page-about .team-legend__desc {
  grid-column: 2 / -1;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-2);
}

.page-about .team-notes__lead {
  margin: 0 0 16px;
  font-size: clamp(17px, 2.1vw, 19px);
  font-weight: 700;
  line-height: 1.7;
  color: var(--teal-700);
}

.page-about .team-notes p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-2);
  max-width: 68ch;
}

.page-about .team-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.page-about .team-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--ink-800);
  border-radius: var(--r-sm);
}

.page-about .team-fact .num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--live);
  font-variant-numeric: tabular-nums;
}

.page-about .team-fact__label {
  font-size: 12px;
  line-height: 1.5;
  color: rgba(244, 250, 253, 0.7);
}

/* ---------- 区域网络 ---------- */
.page-about .network__media {
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
  padding: 0;
  margin-bottom: clamp(22px, 4vw, 34px);
}

.page-about .network__media .media__frame {
  display: block;
}

.page-about .network__media .media__caption {
  padding: 14px 18px 16px;
  margin: 0;
}

.page-about .network-grid {
  display: grid;
  gap: 12px;
}

.page-about .network-fold {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}

.page-about .network-fold:hover {
  border-color: var(--line-2);
  box-shadow: var(--sh-1);
}

.page-about .network-fold .fold__head {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  background: transparent;
  border: 0;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

.page-about .network-fold .fold__index {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--teal-600);
  background: var(--mist);
  border-radius: var(--pill);
  padding: 4px 10px;
  white-space: nowrap;
}

.page-about .network-fold .fold__title {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text);
}

.page-about .network-fold .fold__sign {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  color: var(--teal-600);
  font-size: 15px;
  line-height: 1;
  transition: transform 200ms ease, background 200ms ease;
}

.page-about .network-fold .fold__panel {
  display: none;
  border-top: 1px solid var(--line);
}

.page-about .network-fold[data-open] .fold__panel {
  display: block;
}

.page-about .network-fold[data-open] .fold__sign {
  transform: rotate(45deg);
  background: var(--mist);
}

.page-about .network-fold .fold__body {
  padding: 16px 18px 20px;
}

.page-about .network-fold .fold__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-2);
}

.page-about .network-hub {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 18px;
  padding: clamp(20px, 3vw, 28px);
  background: var(--ink-900);
  color: var(--paper);
  border-radius: var(--r-md);
}

.page-about .network-hub__badge {
  display: flex;
}

.page-about .network-hub__title {
  margin: 0 0 10px;
  font-size: clamp(18px, 2.6vw, 23px);
  font-weight: 800;
  color: #fff;
}

.page-about .network-hub__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 250, 253, 0.78);
  max-width: 78ch;
}

/* ---------- 资质 ---------- */
.page-about .cred-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-about .cred-filters .btn[aria-pressed="true"] {
  background: var(--teal-600);
  border-color: var(--teal-600);
  color: #fff;
}

.page-about .cred-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .cred-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-left: 3px solid var(--teal-600);
  border-radius: var(--r-sm);
}

.page-about .cred-item[data-filtered-out] {
  display: none;
}

.page-about .cred-no {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--teal-600);
  font-variant-numeric: tabular-nums;
  padding-top: 3px;
}

.page-about .cred-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.page-about .cred-desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-2);
}

/* ---------- 合作生态 ---------- */
.page-about .partner-grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .partner-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(22px, 3vw, 30px);
  background: #fff;
  border: 1px solid var(--line);
  border-top: 4px solid var(--teal-600);
  border-radius: var(--r-md);
  box-shadow: var(--sh-1);
}

.page-about .partner-card:nth-child(2) {
  border-top-color: var(--teal-400);
}

.page-about .partner-card:nth-child(3) {
  border-top-color: var(--accent);
}

.page-about .partner-card__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 6vw, 3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--teal-700);
  font-variant-numeric: tabular-nums;
}

.page-about .partner-card__plus {
  font-size: 0.6em;
  color: var(--accent);
}

.page-about .partner-card .card__title {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--text);
}

.page-about .partner-card p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-2);
}

/* ---------- 人才培养 ---------- */
.page-about .growth__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .growth__media .media {
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}

.page-about .growth__media .media__caption {
  padding: 12px 4px 0;
}

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

.page-about .path__step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .path__step:first-child {
  padding-top: 0;
}

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

.page-about .path__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  background: var(--teal-700);
  border-radius: var(--pill);
  height: 26px;
  display: grid;
  place-items: center;
  font-variant-numeric: tabular-nums;
}

.page-about .path__step:last-child .path__no {
  background: var(--accent);
}

.page-about .path__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
}

.page-about .path__text p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-2);
}

.page-about .growth__note {
  margin: 20px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--teal-400);
  background: var(--mist);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--teal-700);
}

/* ---------- 企业文化 ---------- */
.page-about .culture-deck {
  display: grid;
  gap: var(--about-gap);
}

.page-about .culture-card {
  background: var(--ink-800);
  border: 1px solid rgba(95, 184, 216, 0.24);
  border-radius: var(--r-lg);
  padding: clamp(22px, 3vw, 32px);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .culture-card__quote {
  margin: 0;
  font-size: clamp(17px, 2.4vw, 21px);
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: #fff;
}

.page-about .culture-card__quote::before {
  content: "";
  display: block;
  width: 34px;
  height: 3px;
  border-radius: var(--pill);
  background: var(--accent);
  margin-bottom: 14px;
}

.page-about .culture-card__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(244, 250, 253, 0.74);
}

.page-about .culture-cta {
  display: grid;
  gap: 18px;
  margin-top: clamp(26px, 4vw, 40px);
  padding-top: clamp(24px, 4vw, 34px);
  border-top: 1px solid rgba(95, 184, 216, 0.22);
}

.page-about .culture-cta__title {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.4vw, 21px);
  font-weight: 800;
  color: #fff;
}

.page-about .culture-cta__text p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(244, 250, 253, 0.7);
}

.page-about .culture-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-section--culture .btn--ghost {
  border-color: rgba(95, 184, 216, 0.4);
  color: var(--paper);
}

.page-about .about-section--culture .btn--ghost:hover {
  background: rgba(95, 184, 216, 0.16);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .tl-item {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 0 22px;
  }

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

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

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

  .page-about .culture-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .profile__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-about .team-layout {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(32px, 4vw, 54px);
    align-items: start;
  }

  .page-about .growth__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: clamp(32px, 4.5vw, 58px);
  }

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

  .page-about .network-grid > .network-fold:nth-child(1) {
    grid-column: span 2;
  }

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

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

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

  .page-about .about-hero__track {
    margin-inline: max(var(--pad), calc((100% - var(--wrap)) / 2 + var(--pad)));
  }
}

@media (min-width: 1100px) {
  .page-about .network-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .network-grid > .network-fold:nth-child(1) {
    grid-column: span 2;
  }

  .page-about .network-grid > .network-fold:nth-child(6) {
    grid-column: span 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-card,
  .page-about .network-fold .fold__sign {
    transition: none;
  }

  .page-about .tl-card:hover {
    transform: none;
  }
}
<<<END>>>

.page-about {
  --x: inherit;
}