.page-about {
  position: relative;
  background-color: var(--paper);
  background-image:
    linear-gradient(to right, rgba(63, 115, 112, 0.13) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(63, 115, 112, 0.13) 1px, transparent 1px);
  background-size: 76px 76px;
  background-position: -1px -1px;
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about a {
  color: inherit;
}

.page-about .about-topbar {
  padding-top: clamp(16px, 3vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(22px, 4vw, 40px) 0 clamp(36px, 6vw, 72px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 56px);
  align-items: start;
}

.page-about .about-coord {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  background: var(--white);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--karst);
}

.page-about .about-coord span {
  color: var(--copper);
  font-weight: 700;
}

.page-about .about-hero__title {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7.6vw, 66px);
  line-height: 1.08;
  letter-spacing: 0.01em;
}

.page-about .about-hero__mark {
  position: relative;
  display: inline-block;
  z-index: 0;
}

.page-about .about-hero__mark::after {
  content: "";
  position: absolute;
  left: -0.05em;
  right: -0.05em;
  bottom: 0.1em;
  height: 0.32em;
  background: var(--tangerine);
  opacity: 0.6;
  z-index: -1;
  transform: skewX(-8deg);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

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

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

.page-about .about-figure__frame {
  position: relative;
  overflow: hidden;
  border: 2px solid var(--ink);
  background: var(--karst-deep);
  box-shadow: 10px 10px 0 rgba(184, 111, 59, 0.34);
  transform: rotate(-1.2deg);
}

.page-about .about-figure--plain .about-figure__frame {
  box-shadow: 7px 7px 0 rgba(11, 36, 34, 0.14);
  transform: none;
}

.page-about .about-figure .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 10;
}

.page-about .about-figure__caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}

/* ---------- 数值带 ---------- */
.page-about .about-stats {
  margin-top: clamp(30px, 5vw, 52px);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.page-about .about-stats__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

.page-about .about-stats__item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 15px 14px;
  border-left: 1px solid var(--line);
}

.page-about .about-stats__item:first-child {
  border-left: 0;
}

.page-about .about-stats__item:nth-child(n + 3) {
  border-top: 1px solid var(--line);
}

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(19px, 3.4vw, 26px);
  letter-spacing: 0.02em;
  color: var(--karst);
}

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

/* ---------- 本页跳转条 ---------- */
.page-about .about-jump {
  padding-top: clamp(18px, 3vw, 26px);
}

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

.page-about .about-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--line-strong);
  background: var(--white);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.5;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-jump__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--copper);
}

.page-about .about-jump__link:hover,
.page-about .about-jump__link:focus-visible {
  background: var(--karst);
  border-color: var(--karst);
  color: var(--paper);
}

.page-about .about-jump__link:hover .about-jump__no,
.page-about .about-jump__link:focus-visible .about-jump__no {
  color: var(--tangerine);
}

.page-about .about-jump__link:focus-visible {
  outline: 2px solid var(--tangerine);
  outline-offset: 2px;
}

/* ---------- 章节框架 ---------- */
.page-about .about-section {
  padding: clamp(46px, 8vw, 100px) 0;
}

.page-about .about-section--tint {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-lead {
  max-width: 66ch;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-about .about-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--copper);
}

.page-about .about-kicker__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  padding: 3px 6px;
  background: var(--ink);
  color: var(--paper);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.page-about .about-kicker--light {
  color: var(--tangerine);
}

.page-about .about-kicker--light .about-kicker__no {
  background: var(--tangerine);
  color: var(--night);
}

.page-about .about-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 4.6vw, 42px);
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.page-about .about-lede {
  margin: 16px 0 0;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 品牌起源 ---------- */
.page-about .about-origin {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 54px);
  align-items: start;
}

.page-about .about-notes {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-notes li {
  position: relative;
  padding-left: 24px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 9px;
  height: 9px;
  border: 2px solid var(--copper);
  transform: rotate(45deg);
}

.page-about .about-notes strong {
  color: var(--ink);
  font-weight: 700;
}

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

.page-about .about-slip {
  padding: 20px 22px 22px;
  border: 1.5px solid var(--ink);
  background: var(--white);
  box-shadow: 8px 8px 0 rgba(11, 36, 34, 0.12);
}

.page-about .about-slip--a {
  background: var(--celadon);
  border-color: var(--karst-deep);
  transform: rotate(-1.5deg);
}

.page-about .about-slip--b {
  transform: rotate(1.3deg);
  margin-left: clamp(0px, 6vw, 34px);
}

.page-about .about-slip__no {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--karst);
}

.page-about .about-slip--b .about-slip__no {
  color: var(--cinnabar);
}

.page-about .about-slip__text {
  margin: 0;
  font-size: 17px;
  line-height: 1.7;
  font-weight: 700;
  color: var(--ink);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 50px);
  align-items: start;
}

.page-about .about-time {
  list-style: none;
  margin: 0;
  padding: 0 0 0 46px;
  position: relative;
}

.page-about .about-time::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 14px;
  bottom: 12px;
  width: 2px;
  background: repeating-linear-gradient(to bottom, var(--blueprint) 0 7px, transparent 7px 15px);
}

.page-about .about-time__item {
  position: relative;
  padding-bottom: clamp(24px, 4vw, 38px);
}

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

.page-about .about-time__item::before {
  content: "";
  position: absolute;
  left: -37px;
  top: 9px;
  width: 12px;
  height: 12px;
  background: var(--paper);
  border: 2px solid var(--copper);
  transform: rotate(45deg);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-about .about-time__item:hover::before {
  background: var(--tangerine);
  border-color: var(--ink);
}

.page-about .about-time__year {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(19px, 3.2vw, 28px);
  line-height: 1;
  letter-spacing: 0.05em;
  color: var(--copper);
}

.page-about .about-time__body {
  margin-top: 10px;
  padding: 14px 16px 16px;
  background: var(--white);
  border-left: 3px solid var(--line-strong);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-time__item:hover .about-time__body,
.page-about .about-time__item:focus-within .about-time__body {
  border-left-color: var(--tangerine);
  transform: translateX(4px);
  box-shadow: 6px 6px 0 rgba(184, 111, 59, 0.18);
}

.page-about .about-time__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.45;
  color: var(--ink);
}

.page-about .about-time__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-time__gain {
  margin-top: 10px !important;
  padding-top: 10px;
  border-top: 1px dashed var(--line-strong);
  font-size: 13.5px !important;
  color: var(--karst) !important;
  font-weight: 600;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-team__block {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3.2vw, 30px);
  border: 1.5px solid var(--ink);
}

.page-about .about-team__block--a {
  background: var(--karst);
  border-color: var(--karst-deep);
  color: var(--white);
}

.page-about .about-team__block--b {
  background: var(--celadon);
  color: var(--ink);
}

.page-about .about-team__block--c {
  background: var(--copper);
  color: var(--white);
}

.page-about .about-team__count {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(38px, 7vw, 58px);
  line-height: 1;
  letter-spacing: -0.01em;
}

.page-about .about-team__count span {
  margin-left: 6px;
  font-size: 0.34em;
  letter-spacing: 0.12em;
}

.page-about .about-team__role {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.4;
}

.page-about .about-team__block p:last-child {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.8;
}

.page-about .about-team__block--a p:last-child,
.page-about .about-team__block--c p:last-child {
  color: rgba(255, 253, 247, 0.92);
}

.page-about .about-team__block--b p:last-child {
  color: var(--ink-soft);
}

/* ---------- 内容复核 ---------- */
.page-about .about-method {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 46px);
  align-items: start;
}

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

.page-about .about-steps li {
  position: relative;
  padding: 16px 18px 18px 62px;
  background: var(--white);
  border: 1px solid var(--line-strong);
}

.page-about .about-steps li::before {
  counter-increment: about-step;
  content: "0" counter(about-step);
  position: absolute;
  left: 14px;
  top: 16px;
  padding: 3px 7px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-about .about-steps__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16.5px;
  line-height: 1.4;
}

.page-about .about-steps li p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-rhythm {
  margin-top: 18px;
  padding: 18px 20px 20px;
  background: var(--karst-deep);
  color: var(--paper);
}

.page-about .about-rhythm__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--tangerine);
}

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

.page-about .about-rhythm__list li {
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(243, 233, 215, 0.9);
  border-left: 2px solid var(--copper);
  padding-left: 12px;
}

.page-about .about-rhythm__key {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--white);
  border-bottom: 1px solid var(--copper);
}

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

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-eco__node {
  position: relative;
  padding: 22px 20px 24px;
  border: 1.5px dashed var(--blueprint);
  background: rgba(255, 253, 247, 0.72);
  transition: border-color 0.2s ease, border-style 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.page-about .about-eco__node:hover,
.page-about .about-eco__node:focus-within {
  border-style: solid;
  border-color: var(--copper);
  background: var(--white);
  transform: translateY(-3px);
}

.page-about .about-eco__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 4.4vw, 36px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--copper);
}

.page-about .about-eco__label {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.4;
}

.page-about .about-eco__node p {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-eco__note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .about-link {
  color: var(--karst);
  text-decoration: none;
  border-bottom: 2px solid var(--copper);
  font-weight: 700;
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
  padding: clamp(48px, 8vw, 96px) 0;
  background: var(--night);
  color: var(--paper);
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 60%;
  height: 180%;
  background: linear-gradient(105deg, transparent 46%, rgba(184, 111, 59, 0.28) 46.4%, rgba(184, 111, 59, 0.28) 47%, transparent 47.4%);
  pointer-events: none;
}

.page-about .about-cta__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 54px);
  align-items: start;
}

.page-about .about-cta__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 4.6vw, 42px);
  line-height: 1.2;
  color: var(--white);
}

.page-about .about-cta__text p {
  margin: 0 0 14px;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(243, 233, 215, 0.86);
}

.page-about .about-cta__note {
  padding-left: 14px;
  border-left: 2px solid var(--copper);
  font-size: 14.5px !important;
  color: rgba(169, 207, 194, 0.95) !important;
}

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

.page-about .about-cta .btn--ghost {
  border-color: rgba(243, 233, 215, 0.55);
  color: var(--paper);
}

.page-about .about-cta .btn--ghost:hover,
.page-about .about-cta .btn--ghost:focus-visible {
  background: rgba(243, 233, 215, 0.14);
  border-color: var(--tangerine);
  color: var(--white);
}

.page-about .about-cta__links {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
}

.page-about .about-cta__links a {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--celadon);
  border-bottom: 1px solid rgba(169, 207, 194, 0.45);
  padding-bottom: 2px;
}

.page-about .about-cta__links a:hover,
.page-about .about-cta__links a:focus-visible {
  color: var(--tangerine);
  border-bottom-color: var(--tangerine);
}

.page-about .about-cta__hint {
  width: 100%;
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: rgba(243, 233, 215, 0.62);
}

.page-about .about-cta a:focus-visible {
  outline: 2px solid var(--tangerine);
  outline-offset: 3px;
}

/* ---------- 中屏 ---------- */
@media (min-width: 700px) {
  .page-about .about-stats__list {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-stats__item:nth-child(n + 3) {
    border-top: 0;
  }

  .page-about .about-stats__item:nth-child(3) {
    border-left: 1px solid var(--line);
  }

  .page-about .about-team {
    grid-template-columns: 1.22fr 0.94fr 0.84fr;
    align-items: stretch;
  }

  .page-about .about-team__block--b {
    margin-top: clamp(16px, 2.4vw, 30px);
  }

  .page-about .about-team__block--c {
    margin-top: clamp(32px, 4vw, 56px);
  }

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

/* ---------- 桌面 ---------- */
@media (min-width: 940px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.06fr 0.94fr;
    align-items: start;
  }

  .page-about .about-hero__figure {
    padding-top: 16px;
  }

  .page-about .about-origin {
    grid-template-columns: 1.12fr 0.88fr;
  }

  .page-about .about-origin__slips {
    padding-top: 28px;
  }

  .page-about .about-timeline {
    grid-template-columns: 1.24fr 0.76fr;
  }

  .page-about .about-timeline__figure {
    position: sticky;
    top: 108px;
  }

  .page-about .about-method {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-method__figure {
    position: sticky;
    top: 108px;
  }

  .page-about .about-cta__grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-time__item:hover .about-time__body,
  .page-about .about-time__item:focus-within .about-time__body,
  .page-about .about-eco__node:hover,
  .page-about .about-eco__node:focus-within {
    transform: none;
  }
}
<<<END>>>