.page-about {
  position: relative;
  display: grid;
  gap: clamp(48px, 6.5vw, 92px);
  padding: clamp(22px, 3.6vw, 44px) 0 clamp(56px, 8vw, 104px);
  overflow-x: clip;
}

.page-about > * {
  min-width: 0;
}

/* ---------- 首屏 · 框景 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-about .about-frame {
  position: relative;
  padding: clamp(24px, 3.6vw, 48px) clamp(20px, 3.2vw, 44px);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(30, 122, 92, 0.34), transparent 58%),
    linear-gradient(180deg, var(--panel) 0%, var(--panel-3) 100%);
  border: 1px solid var(--hair);
  box-shadow: var(--glow);
}

.page-about .about-frame::before {
  content: "";
  position: absolute;
  inset: 9px;
  border: 1px solid var(--hair-soft);
  pointer-events: none;
}

.page-about .about-frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 9px;
  pointer-events: none;
  background: repeating-linear-gradient(90deg, var(--line-dim) 0 1px, transparent 1px 20px);
  opacity: 0.55;
}

.page-about .about-kicker {
  display: inline-block;
  margin: 0 0 clamp(14px, 2vw, 22px);
  color: var(--line);
}

.page-about .about-frame h1 {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-size: clamp(30px, 5.2vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--paper);
}

.page-about .about-lede {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(242, 245, 241, 0.82);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--hair-soft);
  border: 1px solid var(--hair);
}

.page-about .about-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(14px, 1.6vw, 20px);
  background: var(--panel-2);
  border-left: 3px solid var(--hair-soft);
}

.page-about .about-stats .stat:nth-child(1) { border-left-color: var(--line); }
.page-about .about-stats .stat:nth-child(2) { border-left-color: var(--line-dim); }
.page-about .about-stats .stat:nth-child(3) { border-left-color: var(--indigo); }
.page-about .about-stats .stat:nth-child(4) { border-left-color: var(--amber); }

.page-about .about-stats .stat__value {
  font-family: var(--font-num);
  font-size: clamp(26px, 3.6vw, 38px);
  line-height: 1;
  color: var(--line);
}

.page-about .about-stats .stat__key {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 为什么做这件事 ---------- */
.page-about .about-why__grid {
  display: grid;
  gap: clamp(22px, 3vw, 38px);
  margin-top: clamp(20px, 2.6vw, 32px);
}

.page-about .about-why__prose p {
  color: rgba(242, 245, 241, 0.84);
}

.page-about .about-quote {
  margin: clamp(20px, 2.6vw, 30px) 0 0;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--paper-2);
  color: var(--ink);
  border: 1px solid var(--ink);
  box-shadow: 6px 6px 0 rgba(240, 178, 74, 0.3);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-quote .num {
  color: var(--wine);
  font-weight: 700;
}

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

.page-about .about-why__list li {
  position: relative;
  padding: clamp(16px, 2vw, 22px) clamp(16px, 2vw, 22px) clamp(16px, 2vw, 22px) clamp(20px, 2.4vw, 26px);
  background: var(--panel);
  border: 1px solid var(--hair-soft);
}

.page-about .about-why__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--line-dim);
}

.page-about .about-why__list h3 {
  margin: 10px 0 8px;
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--paper);
}

.page-about .about-why__list p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 团队与分工 ---------- */
.page-about .about-team__media {
  margin: clamp(20px, 2.6vw, 32px) 0 0;
}

.page-about .about-roles {
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-roles .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-bottom: 1px solid var(--hair);
}

.page-about .about-roles .tabs__tab {
  appearance: none;
  background: transparent;
  border: 1px solid var(--hair-soft);
  border-bottom: none;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  letter-spacing: 0.04em;
  padding: 10px 16px;
  cursor: pointer;
}

.page-about .about-roles .tabs__tab[aria-selected="true"] {
  color: var(--ink);
  background: var(--line);
  border-color: var(--line);
}

.page-about .about-roles .tabs__tab:focus-visible {
  outline: 2px solid var(--line);
  outline-offset: 2px;
}

.page-about .about-roles .tabs__panel {
  margin-top: clamp(18px, 2.4vw, 26px);
  padding: clamp(18px, 2.6vw, 30px);
  background: var(--panel-2);
  border: 1px solid var(--hair-soft);
}

.page-about .about-roles .tabs__panel h3 {
  margin: 0 0 14px;
  font-size: clamp(17px, 2vw, 21px);
  color: var(--paper);
}

.page-about .about-roles .tabs__panel[hidden] {
  display: none;
}

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

.page-about .about-roles__duties li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(242, 245, 241, 0.84);
}

.page-about .about-roles__duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 10px;
  height: 1px;
  background: var(--line);
}

/* ---------- 三套做法 ---------- */
.page-about .about-method__grid {
  display: grid;
  gap: clamp(22px, 3vw, 38px);
  margin-top: clamp(20px, 2.6vw, 32px);
}

.page-about .about-method__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--hair-soft);
  border: 1px solid var(--hair-soft);
}

.page-about .about-method__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 1.8vw, 20px);
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--panel);
}

.page-about .about-method__no {
  font-family: var(--font-num);
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1;
  padding-top: 2px;
  color: var(--line);
}

.page-about .about-method__item h3 {
  margin: 0 0 8px;
  font-size: clamp(16px, 1.9vw, 20px);
  color: var(--paper);
}

.page-about .about-method__item p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(242, 245, 241, 0.78);
}

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

/* ---------- 时间线 ---------- */
.page-about .tl {
  position: relative;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--line) 0%, var(--line-dim) 42%, var(--hair-soft) 100%);
}

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

.page-about .tl__node {
  position: relative;
  padding-left: 34px;
}

.page-about .tl__node::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 18px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--line-dim);
}

.page-about .tl__node[open]::before {
  background: var(--line);
  border-color: var(--line);
  box-shadow: 0 0 0 4px rgba(79, 227, 176, 0.14);
}

.page-about .tl__sum {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--hair-soft);
  cursor: pointer;
  list-style: none;
}

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

.page-about .tl__sum:focus-visible {
  outline: 2px solid var(--line);
  outline-offset: 3px;
}

.page-about .tl__aside {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .tl__year {
  font-family: var(--font-num);
  font-size: clamp(18px, 2.2vw, 24px);
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-about .tl__stage {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-about .tl__head {
  font-size: clamp(15px, 1.7vw, 18px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .tl__sum::after {
  content: "+";
  font-family: var(--font-num);
  font-size: 18px;
  color: var(--line);
}

.page-about .tl__node[open] .tl__sum::after {
  content: "–";
}

.page-about .tl__body {
  padding: 6px 0 clamp(18px, 2.4vw, 26px);
}

.page-about .tl__body p {
  margin: 0 0 12px;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(242, 245, 241, 0.8);
}

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

.page-about .tl__facts li {
  padding: 7px 12px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--paper);
  background: var(--panel-2);
  border: 1px solid var(--hair-soft);
}

.page-about .tl__facts .num {
  color: var(--line);
}

/* ---------- 合作与认可 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(20px, 2.6vw, 32px);
}

.page-about .about-partner {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 26px);
}

.page-about .about-partner .label {
  align-self: flex-start;
}

.page-about .about-partner h3 {
  margin: 0;
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--paper);
}

.page-about .about-partner p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(242, 245, 241, 0.78);
}

/* ---------- 地区投入 ---------- */
.page-about .about-region__media {
  margin: clamp(20px, 2.6vw, 32px) 0 0;
}

.page-about .about-region__grid {
  display: grid;
  gap: clamp(20px, 2.6vw, 32px);
  margin-top: clamp(20px, 2.6vw, 32px);
}

.page-about .about-region__grid .prose p {
  color: rgba(242, 245, 241, 0.84);
}

.page-about .about-region__points {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--hair-soft);
  border: 1px solid var(--hair-soft);
}

.page-about .about-region__points li {
  padding: 14px 16px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(242, 245, 241, 0.82);
  background: var(--panel-2);
}

.page-about .about-region__points .num {
  color: var(--amber);
  margin-right: 2px;
}

/* ---------- 结尾引导 ---------- */
.page-about .about-cta__inner {
  position: relative;
  padding: clamp(26px, 3.6vw, 46px);
  background:
    linear-gradient(120deg, rgba(76, 63, 143, 0.32), rgba(10, 20, 16, 0.72) 62%),
    var(--panel);
  border: 1px solid var(--hair);
}

.page-about .about-cta__inner h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-cta__inner p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 245, 241, 0.8);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.4vw, 26px);
}

/* ---------- 图片容器 ---------- */
.page-about .media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 栅格升级 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: stretch;
  }

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

  .page-about .about-why__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  }

  .page-about .about-method__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-region__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  }

  .page-about .tl__sum {
    grid-template-columns: 132px minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-about .tl__aside {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-about .tl__stage {
    writing-mode: vertical-rl;
    letter-spacing: 0.3em;
  }

  .page-about .tl__node::before {
    top: 50%;
    transform: translateY(-50%);
  }
}

@media (min-width: 760px) {
  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .page-about .about-roles .tabs__list {
    flex-direction: column;
    border-bottom: none;
  }

  .page-about .about-roles .tabs__tab {
    width: 100%;
    border-bottom: 1px solid var(--hair-soft);
    text-align: left;
  }
}
<<<END>>>