.page-about {
  --about-space: clamp(52px, 8vw, 104px);
  background-color: var(--cream);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(22px, 4vw, 44px) clamp(48px, 7vw, 92px);
  background:
    radial-gradient(85% 70% at 94% 4%, rgba(232, 199, 122, 0.36), transparent 62%),
    radial-gradient(72% 62% at 0% 96%, rgba(200, 50, 42, 0.11), transparent 60%),
    var(--cream);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(31, 27, 24, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(31, 27, 24, 0.05) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.3) 58%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.3) 58%, transparent 100%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(30px, 4.5vw, 52px);
  align-items: center;
  margin-top: clamp(18px, 3vw, 34px);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 8.4vw, 82px);
  line-height: 1.04;
  letter-spacing: -0.022em;
  color: var(--ink);
  text-wrap: balance;
  text-shadow: 5px 5px 0 rgba(201, 154, 61, 0.16);
}

.page-about .about-hero__title .hl {
  color: var(--red);
  text-shadow: none;
}

.page-about .about-hero__lede {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: clamp(15.5px, 0.55vw + 12px, 17.5px);
  line-height: 1.88;
  color: var(--ink-soft);
}

.page-about .about-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-facts li {
  padding: 7px 13px;
  border-radius: 999px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink);
  background: rgba(255, 249, 239, 0.9);
  border: 1px solid var(--line);
  box-shadow: 0 12px 24px -22px rgba(31, 27, 24, 0.75);
}

.page-about .about-facts li:nth-child(2n) {
  color: var(--red-deep);
  border-color: var(--line-gold);
  background: rgba(232, 199, 122, 0.16);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  padding-bottom: 22px;
}

.page-about .about-hero__frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--milk);
  border: 1px solid var(--line-gold);
  box-shadow: var(--shadow-soft);
}

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

.page-about .about-hero__chip {
  position: absolute;
  left: 12px;
  bottom: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  border-radius: var(--radius);
  background: var(--milk);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

.page-about .about-hero__chip-num {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--red);
  letter-spacing: 0.02em;
}

.page-about .about-hero__chip-text {
  font-size: 12.5px;
  color: var(--ink-soft);
  line-height: 1.4;
}

/* ---------- 通用区块与章节头 ---------- */
.page-about .about-section {
  position: relative;
  padding-block: var(--about-space);
}

.page-about .about-section--paper {
  background:
    radial-gradient(70% 58% at 100% 0%, rgba(201, 154, 61, 0.16), transparent 62%),
    var(--milk);
  border-block: 1px solid var(--line-soft);
}

.page-about .about-head {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: clamp(10px, 2vw, 22px);
  margin-bottom: clamp(26px, 4.4vw, 46px);
}

.page-about .about-head__stamp {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  align-self: start;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.26em;
  color: var(--gold);
  white-space: nowrap;
}

.page-about .section-title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 4.4vw, 46px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-about .lede {
  margin: 14px 0 0;
  max-width: 42em;
  font-size: clamp(14.5px, 0.45vw + 12px, 17px);
  line-height: 1.82;
  color: var(--ink-soft);
}

/* ---------- 起点 ---------- */
.page-about .origin-grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-about .origin-text p {
  margin: 0 0 16px;
  max-width: 36em;
  font-size: clamp(15px, 0.42vw + 13px, 17px);
  line-height: 1.88;
  color: var(--ink-soft);
}

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

.page-about .origin-text p:first-of-type {
  padding-left: 16px;
  border-left: 3px solid var(--gold);
  color: var(--ink);
}

.page-about .origin-grid__media {
  margin: 0;
}

.page-about .origin-grid__media .media-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--milk);
  box-shadow: var(--shadow-card);
}

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

.page-about .origin-grid__media .media-frame__caption {
  font-size: 12.5px;
  color: var(--ink-soft);
}

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 9px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(to bottom, var(--gold-soft), rgba(201, 154, 61, 0.14));
}

.page-about .timeline__item {
  position: relative;
  box-sizing: border-box;
  padding-left: 38px;
  margin-bottom: 18px;
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  top: 22px;
  left: 3px;
  width: 14px;
  height: 14px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--milk);
  border: 3px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(201, 154, 61, 0.13);
  z-index: 1;
}

.page-about .timeline__card {
  background: var(--cream);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 18px 20px 20px;
  box-shadow: var(--shadow-card);
}

.page-about .timeline__phase {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--red-deep);
  background: rgba(200, 50, 42, 0.09);
  border-radius: 999px;
  padding: 4px 10px;
}

.page-about .timeline__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.1vw, 22px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--ink);
}

.page-about .timeline__text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .timeline__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 栏目体系 ---------- */
.page-about .about-columns {
  position: relative;
  color: var(--milk);
  background:
    radial-gradient(80% 62% at 8% -8%, rgba(200, 50, 42, 0.32), transparent 60%),
    radial-gradient(72% 70% at 104% 106%, rgba(201, 154, 61, 0.22), transparent 62%),
    var(--ink);
}

.page-about .about-columns .section-title {
  color: var(--milk);
}

.page-about .about-columns .lede {
  color: rgba(255, 249, 239, 0.76);
}

.page-about .about-columns .eyebrow {
  color: var(--gold-soft);
}

.page-about .about-columns .about-head__stamp {
  color: var(--gold-soft);
}

.page-about .columns-figure {
  margin: 0 0 clamp(24px, 3.8vw, 42px);
}

.page-about .columns-figure .media-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(255, 249, 239, 0.07);
  border: 1px solid rgba(255, 249, 239, 0.2);
}

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

.page-about .columns-figure .media-frame__caption {
  font-size: 12.5px;
  color: rgba(255, 249, 239, 0.62);
}

.page-about .group-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2.2vw, 22px);
}

.page-about .group-card {
  position: relative;
  padding: 20px 20px 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 249, 239, 0.06);
  border: 1px solid rgba(255, 249, 239, 0.17);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: border-color 220ms ease, background-color 220ms ease, transform 220ms ease;
}

.page-about .group-card:hover {
  border-color: rgba(232, 199, 122, 0.6);
  background: rgba(255, 249, 239, 0.1);
  transform: translateY(-3px);
}

.page-about .group-card__head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.page-about .group-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 800;
  color: var(--milk);
  letter-spacing: 0.01em;
}

.page-about .group-card__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.page-about .group-card__row {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) 20px;
  align-items: center;
  gap: 8px;
  padding: 10px 0;
  border-top: 1px dashed rgba(255, 249, 239, 0.16);
}

.page-about .group-card__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold-soft);
}

.page-about .group-card__name {
  font-size: 14.5px;
  line-height: 1.5;
  color: rgba(255, 249, 239, 0.94);
}

.page-about .group-card__arrow {
  justify-self: end;
  color: var(--gold);
  transition: transform 200ms ease;
}

.page-about .group-card__row:hover .group-card__arrow {
  transform: translateX(4px);
}

.page-about .group-card__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 249, 239, 0.66);
}

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

.page-about .team-text p {
  margin: 0 0 14px;
  max-width: 36em;
  font-size: clamp(15px, 0.42vw + 13px, 17px);
  line-height: 1.86;
  color: var(--ink-soft);
}

.page-about .team-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
}

.page-about .team-stat {
  padding: 15px 13px;
  border-radius: var(--radius);
  background: var(--milk);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

.page-about .team-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(25px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--red);
}

.page-about .team-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-soft);
}

.page-about .team-media {
  margin: 0;
}

.page-about .team-media .media-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-gold);
  background: var(--milk);
  box-shadow: var(--shadow-soft);
}

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

.page-about .team-media .media-frame__caption {
  font-size: 12.5px;
  color: var(--ink-soft);
}

.page-about .audit-chain {
  display: grid;
  gap: 12px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .audit-step {
  position: relative;
  padding: 18px 18px 18px 20px;
  border-radius: var(--radius);
  background: var(--milk);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--gold);
  box-shadow: var(--shadow-card);
}

.page-about .audit-step__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .audit-step__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--ink);
}

.page-about .audit-step__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- 更新节奏 ---------- */
.page-about .about-updates {
  background:
    radial-gradient(88% 68% at 90% 0%, rgba(110, 143, 122, 0.24), transparent 62%),
    radial-gradient(60% 60% at 0% 100%, rgba(232, 199, 122, 0.22), transparent 60%),
    var(--milk);
  border-block: 1px solid var(--line-soft);
}

.page-about .update-grid {
  display: grid;
  gap: clamp(16px, 2.6vw, 26px);
  align-items: start;
}

.page-about .clock-card {
  display: grid;
  gap: 8px;
  padding: 24px 24px 22px;
  border-radius: var(--radius-lg);
  background: var(--ink);
  color: var(--milk);
  box-shadow: var(--shadow-soft);
}

.page-about .clock-card__time {
  font-family: var(--font-mono);
  font-size: clamp(40px, 7.4vw, 64px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold-soft);
}

.page-about .clock-card__label {
  font-size: 14px;
  letter-spacing: 0.06em;
  color: rgba(255, 249, 239, 0.9);
}

.page-about .clock-card__text {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(255, 249, 239, 0.66);
}

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

.page-about .pulse-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: var(--cream);
  border: 1px solid var(--line-soft);
}

.page-about .pulse-item__label {
  font-size: 14px;
  color: var(--ink);
}

.page-about .pulse-item__value {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--red-deep);
  text-align: right;
}

.page-about .update-link {
  margin: clamp(24px, 3.4vw, 34px) 0 0;
}

/* ---------- 合作生态 ---------- */
.page-about .eco-grid {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .eco-card {
  padding: 22px 22px 20px;
  border-radius: var(--radius-lg);
  background: var(--milk);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

.page-about .eco-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.4vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--red-deep);
  letter-spacing: -0.01em;
}

.page-about .eco-card__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .eco-card__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .eco-notes {
  margin-top: clamp(20px, 3vw, 30px);
  padding: 18px 20px;
  border-radius: var(--radius);
  background: rgba(110, 143, 122, 0.1);
  border: 1px solid rgba(110, 143, 122, 0.32);
}

.page-about .eco-notes p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .eco-notes a {
  color: var(--red-deep);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
}

.page-about .eco-notes a:hover {
  color: var(--red);
}

/* ---------- 尾段行动区 ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
  padding-block: clamp(44px, 6.4vw, 78px);
  color: var(--milk);
  background:
    radial-gradient(72% 90% at 10% 0%, rgba(255, 249, 239, 0.18), transparent 62%),
    linear-gradient(118deg, var(--red-deep), var(--red) 62%, #a82a22);
}

.page-about .about-cta::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 24px solid rgba(232, 199, 122, 0.18);
  pointer-events: none;
}

.page-about .about-cta__inner {
  position: relative;
  display: grid;
  gap: clamp(22px, 3vw, 32px);
  align-items: center;
}

.page-about .about-cta__eyebrow {
  color: var(--gold-soft);
}

.page-about .about-cta__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.2vw, 42px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--milk);
}

.page-about .about-cta__text {
  margin: 12px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 249, 239, 0.85);
}

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

/* ---------- 尾部 ---------- */
.page-about .about-tail {
  padding-block: clamp(22px, 3.2vw, 34px);
  background: var(--cream);
  border-top: 1px solid var(--line-soft);
}

.page-about .about-tail__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
}

.page-about .about-tail__note {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

.page-about .about-tail__link {
  font-size: 13px;
  font-weight: 700;
  color: var(--red-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  padding-bottom: 2px;
}

.page-about .about-tail__link:hover {
  color: var(--red);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-head {
    grid-template-columns: 36px minmax(0, 1fr);
  }

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

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

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

@media (min-width: 880px) {
  .page-about .timeline::before {
    left: 50%;
    transform: translateX(-1px);
  }

  .page-about .timeline__item {
    width: 50%;
    padding-left: 0;
    padding-right: 48px;
    margin-bottom: 30px;
    text-align: right;
  }

  .page-about .timeline__item::before {
    left: auto;
    right: -7px;
    top: 24px;
  }

  .page-about .timeline__item:nth-child(even) {
    margin-left: 50%;
    padding-left: 48px;
    padding-right: 0;
    text-align: left;
  }

  .page-about .timeline__item:nth-child(even)::before {
    left: -7px;
    right: auto;
  }

  .page-about .timeline__item:nth-child(odd) .timeline__tags {
    justify-content: flex-end;
  }
}

@media (min-width: 940px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(32px, 4.6vw, 64px);
  }

  .page-about .about-hero__chip {
    left: -20px;
  }

  .page-about .origin-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .origin-grid__media {
    transform: translateY(-12px);
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }

  .page-about .update-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: clamp(26px, 4vw, 56px);
  }
}

@media (min-width: 1100px) {
  .page-about .about-head {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 24px;
  }

  .page-about .about-head__stamp {
    font-size: 11.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .group-card,
  .page-about .group-card__arrow {
    transition: none;
  }

  .page-about .group-card:hover {
    transform: none;
  }

  .page-about .group-card__row:hover .group-card__arrow {
    transform: none;
  }
}
<<<END>>>