.page-about {
  background: var(--rice);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 84% 10%, rgba(200, 87, 46, .3), transparent 58%),
    linear-gradient(168deg, #1d5147 0%, var(--bamboo-deep) 60%, #102d28 100%);
  color: var(--paper);
  padding: clamp(26px, 6vw, 56px) 0 clamp(44px, 8vw, 96px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(246, 241, 230, .06) 0 1px, transparent 1px 36px),
    repeating-linear-gradient(90deg, rgba(246, 241, 230, .06) 0 1px, transparent 1px 36px);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 5vw, 54px);
  align-items: center;
}

.page-about .about-hero__figure {
  margin: 0;
  order: 2;
  background: rgba(255, 253, 247, .95);
  padding: 12px 12px 0;
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-lift);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius-m);
  object-fit: cover;
}

.page-about .about-hero__figure figcaption {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--gray-deep);
  padding: 10px 4px 12px;
  text-align: center;
}

.page-about .about-hero__type {
  order: 1;
  min-width: 0;
}

.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  letter-spacing: .04em;
  color: rgba(246, 241, 230, .7);
  margin: 0 0 18px;
}

.page-about .about-crumb a {
  color: rgba(246, 241, 230, .88);
  text-decoration: none;
  border-bottom: 1px solid rgba(246, 241, 230, .34);
}

.page-about .about-crumb a:hover {
  color: var(--paper);
  border-bottom-color: var(--vermilion);
}

.page-about .about-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .22em;
  color: rgba(246, 241, 230, .62);
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 6.4vw, 3.5rem);
  line-height: 1.18;
  letter-spacing: .01em;
  margin: 0 0 20px;
  color: var(--paper);
}

.page-about .about-hero__hl {
  font-style: normal;
  box-shadow: inset 0 -.16em 0 rgba(200, 87, 46, .8);
  padding-bottom: .04em;
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(.95rem, 2.4vw, 1.06rem);
  line-height: 1.82;
  color: rgba(246, 241, 230, .86);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 4vw, 34px);
}

.page-about .about-hero__note {
  display: none;
}

.page-about .about-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 999px;
  background: var(--vermilion);
  color: var(--paper);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .02em;
  text-decoration: none;
  border: 1.5px solid var(--vermilion);
  transition: transform .2s ease, background .2s ease;
}

.page-about .about-cta:hover {
  background: var(--vermilion-deep);
  border-color: var(--vermilion-deep);
  transform: translateY(-2px);
}

.page-about .about-cta--line {
  background: transparent;
  color: var(--paper);
  border-color: rgba(246, 241, 230, .55);
}

.page-about .about-cta--line:hover {
  background: rgba(246, 241, 230, .12);
  border-color: var(--paper);
}

/* 通用章节 */
.page-about .about-section {
  padding: clamp(48px, 8vw, 100px) 0;
}

.page-about .about-head {
  max-width: 64ch;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .about-head__no {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .18em;
  color: var(--vermilion-deep);
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .about-head__no::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--vermilion);
  flex: none;
}

.page-about .about-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 4vw, 2.15rem);
  line-height: 1.32;
  letter-spacing: .01em;
  margin: 0 0 16px;
}

.page-about .about-head p:not(.about-head__no) {
  margin: 0;
  line-height: 1.8;
  color: var(--gray-deep);
  font-size: clamp(.94rem, 2.2vw, 1rem);
}

/* 01 起点 */
.page-about .about-origin {
  background: var(--rice);
}

.page-about .about-visitors {
  display: grid;
  gap: 14px;
}

.page-about .about-visitor {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 4px solid var(--bamboo);
  border-radius: var(--radius-m);
  padding: 20px 20px 22px;
  box-shadow: var(--shadow-soft);
}

.page-about .about-visitor__tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--bamboo);
}

.page-about .about-visitor__text {
  margin: 0;
  line-height: 1.78;
  font-size: .95rem;
  color: var(--ink);
}

/* 02 历程 */
.page-about .about-history {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-history__figure {
  margin: 0 0 clamp(28px, 5vw, 52px);
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  background: var(--rice);
}

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

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-tl__item {
  position: relative;
  margin-left: 7px;
  padding: 0 0 30px 24px;
  border-left: 2px solid var(--line-strong);
}

.page-about .about-tl__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 3px;
  width: 16px;
  height: 16px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--vermilion);
  border: 3px solid var(--paper);
  box-shadow: 0 0 0 2px rgba(200, 87, 46, .22);
}

.page-about .about-tl__year {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: .9rem;
  letter-spacing: .1em;
  color: var(--bamboo);
}

.page-about .about-tl__body {
  background: var(--rice);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 16px 18px;
}

.page-about .about-tl__body > summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-about .about-tl__body > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-tl__body > summary::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--vermilion-deep);
  flex: none;
}

.page-about .about-tl__body[open] > summary::after {
  content: "－";
}

.page-about .about-tl__body > summary:focus-visible {
  outline: 2px solid var(--vermilion);
  outline-offset: 4px;
  border-radius: var(--radius-s);
}

.page-about .about-tl__body p {
  margin: 12px 0 0;
  line-height: 1.8;
  font-size: .93rem;
  color: var(--gray-deep);
}

/* 03 团队 */
.page-about .about-team {
  background: var(--rice);
}

.page-about .about-team__layout {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

.page-about .about-team__cards {
  display: grid;
  gap: 14px;
}

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

.page-about .about-team__tag {
  margin: 0 0 10px;
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(47, 107, 94, .1);
  color: var(--bamboo);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
}

.page-about .about-team__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--ink);
}

.page-about .about-team__desc {
  margin: 0;
  font-size: .92rem;
  line-height: 1.76;
  color: var(--gray-deep);
}

.page-about .about-team__figure {
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 10px;
  box-shadow: var(--shadow-soft);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius-m);
  object-fit: cover;
}

.page-about .about-team__figure figcaption {
  padding: 10px 6px 6px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .05em;
  color: var(--gray-deep);
  text-align: center;
}

/* 04 治理 */
.page-about .about-gov {
  background: linear-gradient(158deg, #2c5969 0%, var(--indigo) 56%, #1a3944 100%);
  color: var(--paper);
}

.page-about .about-head--light .about-head__no {
  color: rgba(246, 241, 230, .72);
}

.page-about .about-head--light .about-head__no::before {
  background: var(--vermilion);
}

.page-about .about-head--light h2 {
  color: var(--paper);
}

.page-about .about-head--light p:not(.about-head__no) {
  color: rgba(246, 241, 230, .78);
}

.page-about .about-gov__steps {
  display: grid;
  gap: 22px;
}

.page-about .about-gov__step {
  border-top: 2px solid rgba(246, 241, 230, .3);
  padding-top: 16px;
}

.page-about .about-gov__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 1.9rem;
  line-height: 1;
  letter-spacing: .06em;
  color: var(--vermilion);
}

.page-about .about-gov__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--paper);
}

.page-about .about-gov__desc {
  margin: 0;
  font-size: .93rem;
  line-height: 1.8;
  color: rgba(246, 241, 230, .78);
}

/* 05 生态 */
.page-about .about-eco {
  background: var(--rice);
}

.page-about .about-eco__layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .about-eco__text h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 4vw, 2.1rem);
  line-height: 1.32;
  margin: 0 0 16px;
}

.page-about .about-eco__text p {
  margin: 0 0 16px;
  line-height: 1.8;
  color: var(--gray-deep);
  font-size: clamp(.94rem, 2.2vw, 1rem);
}

.page-about .about-link {
  display: inline-block;
  margin-top: 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .95rem;
  color: var(--vermilion-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--vermilion);
  padding-bottom: 2px;
}

.page-about .about-link:hover {
  color: var(--vermilion);
}

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

.page-about .about-chip {
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--paper);
  border: 1.5px solid var(--wine);
  color: var(--wine);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .9rem;
  letter-spacing: .02em;
}

.page-about .about-chip--wide {
  background: rgba(122, 46, 58, .08);
  border-style: dashed;
  font-weight: 500;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .04em;
}

.page-about .about-chip--accent {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: var(--paper);
}

/* 06 服务范围 */
.page-about .about-scope {
  background-color: var(--paper);
  background-image:
    repeating-linear-gradient(0deg, rgba(47, 107, 94, .07) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, rgba(47, 107, 94, .07) 0 1px, transparent 1px 32px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-scope__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-scope__cell {
  background: var(--paper);
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  border-bottom: 3px solid var(--bamboo);
  padding: 18px 20px 20px;
}

.page-about .about-scope__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--gray-deep);
}

.page-about .about-scope__value {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--ink);
  line-height: 1.5;
}

.page-about .about-scope__value--mono {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: .04em;
  font-variant-numeric: tabular-nums;
}

/* 下一步 */
.page-about .about-next {
  background: var(--bamboo-deep);
  color: var(--paper);
}

.page-about .about-next__inner {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-about .about-next h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 3.6vw, 1.9rem);
  line-height: 1.34;
  margin: 0 0 12px;
  color: var(--paper);
}

.page-about .about-next p {
  margin: 0;
  max-width: 52ch;
  line-height: 1.78;
  font-size: .95rem;
  color: rgba(246, 241, 230, .8);
}

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

/* 移动端窄屏兜底 */
@media (max-width: 359px) {
  .page-about .about-cta {
    padding: 11px 16px;
    font-size: .88rem;
  }
  .page-about .about-chip {
    padding: 8px 14px;
    font-size: .84rem;
  }
}

/* 平板及以上 */
@media (min-width: 700px) {
  .page-about .about-visitors {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-team__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-gov__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
  }
  .page-about .about-scope__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-tl__item {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 22px;
    padding-left: 26px;
  }
  .page-about .about-tl__year {
    text-align: right;
    margin: 14px 0 0;
  }
  .page-about .about-tl__item::before {
    top: 20px;
  }
}

/* 桌面 */
@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 68px);
  }
  .page-about .about-hero__figure {
    order: 1;
  }
  .page-about .about-hero__type {
    order: 2;
    padding-right: clamp(24px, 4vw, 60px);
  }
  .page-about .about-hero__note {
    display: block;
    position: absolute;
    right: clamp(6px, 1.6vw, 22px);
    top: 50%;
    transform: translateY(-50%);
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: .7rem;
    letter-spacing: .34em;
    color: rgba(246, 241, 230, .48);
    z-index: 2;
    pointer-events: none;
  }
  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
  .page-about .about-team__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-team__card:nth-child(even) {
    transform: translateY(22px);
  }
  .page-about .about-team__figure {
    position: sticky;
    top: 110px;
  }
  .page-about .about-eco__layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }
  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }
  .page-about .about-next__actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-cta {
    transition: none;
  }
  .page-about .about-cta:hover {
    transform: none;
  }
}
<<<END>>>