/* ===== 品牌档案页 · page-about ===== */

.page-about {
  --about-gx: clamp(16px, 4vw, 48px);
  --about-line: rgba(35, 49, 77, 0.9);
  --about-line-soft: rgba(35, 49, 77, 0.5);
  position: relative;
  color: var(--text);
  background: var(--ink-900);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(28px, 5vw, 56px) 0 clamp(40px, 6vw, 76px);
  border-bottom: 1px solid var(--about-line-soft);
  overflow: hidden;
}

.page-about .about-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(35, 49, 77, 0.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(35, 49, 77, 0.42) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.35) 70%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.35) 70%, transparent 100%);
  pointer-events: none;
}

.page-about .about-hero__glow {
  position: absolute;
  top: -160px;
  right: -120px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle at center, rgba(37, 230, 211, 0.18), transparent 68%);
  filter: blur(10px);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

.page-about .about-crumbs {
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-about .about-crumbs .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--text-dim);
}

.page-about .about-crumbs a {
  color: var(--cyan);
  text-decoration: none;
}

.page-about .about-crumbs a:hover {
  text-decoration: underline;
}

.page-about .about-crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-600);
}

.page-about .about-hero__eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  padding: 7px 16px;
  border: 1px solid rgba(37, 230, 211, 0.4);
  border-radius: var(--r-pill);
  background: rgba(37, 230, 211, 0.07);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(34px, 7.2vw, 74px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: #fff;
  max-width: 15em;
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin: 22px 0 0;
  max-width: 720px;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.page-about .about-hero__actions .btn {
  text-decoration: none;
}

/* 首屏数据面板 */
.page-about .about-hero__panel {
  position: relative;
  padding: 26px clamp(18px, 3vw, 30px);
  border: 1px solid var(--line-600);
  border-radius: var(--r-lg);
  background: linear-gradient(155deg, rgba(16, 24, 43, 0.96), rgba(7, 11, 22, 0.96));
  box-shadow: inset 0 1px 0 rgba(37, 230, 211, 0.14);
}

.page-about .about-hero__panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 24px;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(to bottom, var(--cyan), var(--magenta));
}

.page-about .about-hero__panel-tag {
  margin: 0 0 18px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.page-about .about-facts {
  margin: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--about-line-soft);
}

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

.page-about .about-facts dt {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

.page-about .about-facts dd {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--cyan);
}

.page-about .about-facts__row:nth-child(2) dd {
  color: var(--magenta);
}

.page-about .about-facts__row:nth-child(5) dd {
  color: var(--gold);
}

.page-about .about-hero__panel-note {
  margin: 18px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 主体布局 ---------- */
.page-about .about-layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding-top: clamp(28px, 4vw, 52px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* 章节索引 */
.page-about .about-index {
  position: sticky;
  top: 0;
  z-index: 6;
  margin: 0 calc(var(--about-gx) * -1);
  padding: 12px var(--about-gx);
  background: rgba(7, 11, 22, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-index__label {
  display: none;
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--line-600);
}

.page-about .about-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-index__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__list a {
  display: block;
  white-space: nowrap;
  padding: 8px 15px;
  border: 1px solid var(--line-600);
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.page-about .about-index__list a:hover {
  color: var(--cyan);
  border-color: rgba(37, 230, 211, 0.55);
  background: rgba(37, 230, 211, 0.07);
}

/* 内容流 */
.page-about .about-flow {
  display: grid;
  gap: clamp(48px, 7vw, 88px);
  min-width: 0;
}

.page-about .about-block {
  scroll-margin-top: 88px;
  min-width: 0;
}

.page-about .about-block__head {
  position: relative;
  padding-left: 20px;
  margin-bottom: clamp(22px, 3vw, 34px);
  border-left: 3px solid var(--magenta);
}

.page-about .about-block__num {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--magenta);
}

.page-about .about-block__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: #fff;
}

.page-about .about-block__lede {
  margin: 14px 0 0;
  max-width: 760px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 01 起点 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: clamp(18px, 2.6vw, 28px);
}

.page-about .about-paper.card--paper,
.page-about .about-paper {
  background: var(--paper);
  color: var(--ink-text);
  border: 1px solid var(--paper-line);
  border-radius: var(--r-lg);
  padding: clamp(22px, 3vw, 36px);
}

.page-about .about-paper .card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.page-about .about-paper .card__meta {
  font-size: 12px;
  color: #6B6250;
  letter-spacing: 0.08em;
}

.page-about .about-paper .card__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 800;
  color: var(--ink-text);
}

.page-about .about-paper .prose p {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: #23201A;
}

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

.page-about .about-paper .card__foot {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--paper-line);
}

.page-about .about-paper .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-paper .badge {
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  font-size: 12px;
  letter-spacing: 0.04em;
  border: 1px solid var(--paper-line);
  color: #4A4436;
  background: rgba(255, 255, 255, 0.55);
}

.page-about .about-origin__side {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-about .about-quote {
  padding: 24px;
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, rgba(255, 61, 154, 0.16), rgba(255, 90, 60, 0.08));
  border: 1px solid rgba(255, 61, 154, 0.34);
}

.page-about .about-quote__text {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(19px, 2.4vw, 26px);
  font-weight: 800;
  line-height: 1.4;
  color: #fff;
}

.page-about .about-quote__by {
  margin: 12px 0 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--magenta);
}

.page-about .about-origin__card {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--line-600);
  border-radius: var(--r-lg);
  background: var(--ink-800);
}

.page-about .about-origin__card .card__title {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-about .about-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .about-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
}

.page-about .about-list__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(37, 230, 211, 0.6);
}

.page-about .about-origin__card-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-600);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  margin: 0 0 clamp(26px, 3.5vw, 40px);
  border: 1px solid var(--line-600);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-800);
}

.page-about .about-figure--tight {
  margin-bottom: 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 21 / 12;
}

.page-about .about-figure__cap {
  padding: 12px 18px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  border-top: 1px solid var(--line-600);
  background: rgba(7, 11, 22, 0.7);
}

/* ---------- 02 时间轴 ---------- */
.page-about .about-tl {
  position: relative;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
  display: grid;
  gap: 4px;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(to bottom, var(--cyan), rgba(37, 230, 211, 0.25) 62%, var(--magenta));
  border-radius: 2px;
}

.page-about .about-tl__item {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 18px 20px 20px;
  border-radius: var(--r-md);
  border: 1px solid transparent;
  transition: border-color 200ms ease, background-color 200ms ease, transform 200ms ease;
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(37, 230, 211, 0.12);
}

.page-about .about-tl__item:hover {
  border-color: rgba(37, 230, 211, 0.32);
  background: rgba(16, 24, 43, 0.72);
}

.page-about .about-tl__year {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-about .about-tl__item:last-child .about-tl__year {
  color: var(--magenta);
}

.page-about .about-tl__item:last-child::before {
  border-color: var(--magenta);
  box-shadow: 0 0 0 4px rgba(255, 61, 154, 0.14);
}

.page-about .about-tl__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}

.page-about .about-tl__text {
  margin: 0;
  max-width: 720px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 03 服务能力 ---------- */
.page-about .about-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: clamp(24px, 3.5vw, 38px);
}

.page-about .about-metric {
  padding: 22px 18px;
  border: 1px solid var(--line-600);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, rgba(16, 24, 43, 0.95), rgba(7, 11, 22, 0.9));
}

.page-about .about-metric:nth-child(2) {
  border-color: rgba(255, 61, 154, 0.4);
}

.page-about .about-metric:nth-child(4) {
  border-color: rgba(245, 196, 81, 0.36);
}

.page-about .about-metric__v {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4.6vw, 46px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--cyan);
}

.page-about .about-metric:nth-child(2) .about-metric__v {
  color: var(--magenta);
}

.page-about .about-metric:nth-child(4) .about-metric__v {
  color: var(--gold);
}

.page-about .about-metric__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-about .about-capacity__grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

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

.page-about .about-capacity__h {
  margin: 0 0 10px;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}

.page-about .about-capacity__text p {
  margin: 0 0 22px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-dim);
}

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

/* ---------- 04 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-team__item {
  position: relative;
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--line-600);
  border-radius: var(--r-lg);
  background: var(--ink-800);
  overflow: hidden;
}

.page-about .about-team__item--accent {
  background: linear-gradient(150deg, rgba(37, 230, 211, 0.12), rgba(16, 24, 43, 0.96) 62%);
  border-color: rgba(37, 230, 211, 0.4);
}

.page-about .about-team__tag {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--line-600);
}

.page-about .about-team__item--accent .about-team__tag {
  color: var(--cyan);
}

.page-about .about-team__h {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

.page-about .about-team__p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 05 资质荣誉 ---------- */
.page-about .about-badges {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: clamp(24px, 3.5vw, 34px);
}

.page-about .about-badge {
  padding: 18px;
  border: 1px solid var(--line-600);
  border-radius: var(--r-md);
  background: rgba(16, 24, 43, 0.8);
}

.page-about .about-badge--gold {
  border-color: rgba(245, 196, 81, 0.5);
  background: linear-gradient(150deg, rgba(245, 196, 81, 0.14), rgba(16, 24, 43, 0.9));
}

.page-about .about-badge--cyan {
  border-color: rgba(37, 230, 211, 0.42);
  background: linear-gradient(150deg, rgba(37, 230, 211, 0.12), rgba(16, 24, 43, 0.9));
}

.page-about .about-badge__k {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-dim);
}

.page-about .about-badge__v {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  word-break: break-word;
}

.page-about .about-badge--gold .about-badge__v {
  color: var(--gold);
}

.page-about .about-badge--cyan .about-badge__v {
  color: var(--cyan);
}

.page-about .about-recognition__body {
  max-width: 780px;
}

.page-about .about-recognition__body p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .about-paperlinks {
  display: grid;
  gap: 12px;
  margin-top: 6px;
}

.page-about .about-paperlink {
  display: grid;
  gap: 6px;
  padding: 18px 22px;
  border: 1px solid var(--line-600);
  border-radius: var(--r-md);
  text-decoration: none;
  background: rgba(16, 24, 43, 0.7);
  transition: border-color 200ms ease, transform 200ms ease;
}

.page-about .about-paperlink:hover {
  border-color: rgba(37, 230, 211, 0.55);
  transform: translateY(-2px);
}

.page-about .about-paperlink__t {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--cyan);
}

.page-about .about-paperlink__d {
  font-size: 13px;
  color: var(--text-dim);
}

/* ---------- 06 合作生态 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(24px, 3.5vw, 36px);
}

.page-about .about-partner {
  border: 1px solid var(--line-600);
  border-radius: var(--r-md);
  background: rgba(16, 24, 43, 0.78);
  overflow: hidden;
}

.page-about .about-partner[open] {
  border-color: rgba(37, 230, 211, 0.42);
}

.page-about .about-partner__sum {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  transition: background-color 200ms ease;
}

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

.page-about .about-partner__sum:hover {
  background: rgba(37, 230, 211, 0.06);
}

.page-about .about-partner__k {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--magenta);
}

.page-about .about-partner__t {
  flex: 1 1 auto;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

.page-about .about-partner__mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
}

.page-about .about-partner__mark::before,
.page-about .about-partner__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform 200ms ease, opacity 200ms ease;
}

.page-about .about-partner__mark::before {
  width: 14px;
  height: 2px;
}

.page-about .about-partner__mark::after {
  width: 2px;
  height: 14px;
}

.page-about .about-partner[open] .about-partner__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-about .about-partner__body {
  padding: 0 20px 20px;
}

.page-about .about-partner__body p {
  margin: 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-600);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-open {
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid rgba(255, 61, 154, 0.32);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, rgba(255, 61, 154, 0.12), rgba(7, 11, 22, 0.9) 68%);
}

.page-about .about-open__t {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}

.page-about .about-open .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-about .about-open .badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  border: 1px solid var(--line-600);
  color: var(--text-dim);
}

.page-about .about-open .badge--magenta {
  border-color: rgba(255, 61, 154, 0.55);
  color: var(--magenta);
}

.page-about .about-open .badge--cyan {
  border-color: rgba(37, 230, 211, 0.5);
  color: var(--cyan);
}

.page-about .about-open .badge--gold {
  border-color: rgba(245, 196, 81, 0.5);
  color: var(--gold);
}

.page-about .about-open__d {
  margin: 0 0 20px;
  max-width: 640px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-open .btn {
  text-decoration: none;
}

/* ---------- 07 区域与备案 ---------- */
.page-about .about-region__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-region__paper.card--paper,
.page-about .about-region__paper {
  background: var(--paper);
  color: var(--ink-text);
  border: 1px solid var(--paper-line);
  border-radius: var(--r-lg);
  padding: clamp(22px, 3vw, 32px);
}

.page-about .about-region__paper .card__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 800;
  color: var(--ink-text);
}

.page-about .about-region__paper .prose p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: #23201A;
}

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

.page-about .about-region__side {
  display: grid;
  gap: 2px;
  align-content: start;
  border: 1px solid var(--line-600);
  border-radius: var(--r-lg);
  background: var(--ink-800);
  overflow: hidden;
}

.page-about .about-region__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 20px;
  border-bottom: 1px dashed var(--line-600);
}

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

.page-about .about-region__k {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

.page-about .about-region__v {
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan);
  text-align: right;
  word-break: break-word;
}

.page-about .about-cta {
  margin-top: clamp(24px, 3.5vw, 38px);
  padding-top: clamp(22px, 3vw, 30px);
  border-top: 1px solid var(--line-600);
}

.page-about .about-cta__t {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

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

.page-about .about-cta__links .btn {
  text-decoration: none;
}

/* ---------- 入场动画（无脚本也完整显示） ---------- */
.page-about .reveal {
  animation: about-rise 620ms cubic-bezier(0.22, 0.7, 0.3, 1) both;
}

.page-about .about-metrics.reveal {
  animation-delay: 60ms;
}

@keyframes about-rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 响应式 ---------- */
@media (min-width: 680px) {
  .page-about .about-badges {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-about .about-partner__sum {
    padding: 20px 26px;
  }

  .page-about .about-partner__body {
    padding: 0 26px 24px;
  }
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-capacity__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-about .about-region__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-team__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.85fr);
    align-items: start;
  }

  .page-about .about-crumbs {
    grid-column: 1 / -1;
  }

  .page-about .about-layout {
    grid-template-columns: 216px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: 96px;
    margin: 0;
    padding: 0;
    background: transparent;
    backdrop-filter: none;
    border-bottom: 0;
    border-left: 1px solid var(--line-600);
    padding-left: 18px;
  }

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

  .page-about .about-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-index__list a {
    border: 0;
    border-radius: var(--r-sm);
    padding: 9px 12px;
    white-space: normal;
    font-size: 14px;
  }

  .page-about .about-index__list a:hover {
    background: rgba(37, 230, 211, 0.08);
  }

  .page-about .about-tl {
    padding-left: 34px;
  }

  .page-about .about-tl__item {
    padding: 20px 26px 24px;
  }

  .page-about .about-tl__item::before {
    left: -34px;
  }

  .page-about .about-block__head {
    padding-left: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .reveal {
    animation: none;
  }

  .page-about .about-tl__item,
  .page-about .about-paperlink,
  .page-about .about-partner__sum {
    transition: none;
  }
}
<<<END>>>