.page-about {
  --about-pad: clamp(18px, 4vw, 56px);
  --about-line-soft: rgba(157, 185, 199, 0.14);
  --about-paper-line: rgba(11, 16, 38, 0.14);
  color: var(--paper);
  background: var(--ink);
  overflow-x: hidden;
  padding-bottom: clamp(40px, 6vw, 88px);
}

.page-about section {
  padding: clamp(34px, 6vw, 84px) var(--about-pad);
}

.page-about h2,
.page-about h3 {
  margin: 0;
}

.page-about .display-1,
.page-about .display-2 {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.02;
  color: var(--paper);
}

.page-about .display-2 {
  font-size: clamp(27px, 4.6vw, 46px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 52px);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(116deg, rgba(66, 245, 230, 0.055) 0 44%, transparent 44.2%),
    radial-gradient(circle at 84% 14%, rgba(255, 106, 61, 0.12), transparent 58%),
    var(--ink);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -40px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line);
  transform: rotate(7deg);
  pointer-events: none;
}

.page-about .about-hero__meta {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .about-hero__title {
  font-size: clamp(38px, 8.4vw, 74px);
  text-shadow: 3px 3px 0 rgba(66, 245, 230, 0.16);
}

.page-about .about-hero__aside {
  margin: 4px 0 0;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--mist);
  padding-left: 14px;
  border-left: 2px solid var(--orange);
}

.page-about .about-hero__body {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-about .about-hero__more {
  margin: 0;
  font-size: 14px;
  color: var(--mist);
}

.page-about .about-hero__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(66, 245, 230, 0.42);
  padding-bottom: 2px;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-hero__more a:hover,
.page-about .about-hero__more a:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-facts__item {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  background: var(--ink-2);
}

.page-about .about-facts dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .about-facts dd {
  margin: 0;
  font-size: clamp(17px, 2.4vw, 22px);
  color: var(--cyan);
}

/* ---------- 发展路径 ---------- */
.page-about .about-history {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-history__intro {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .about-history__intro p:not(.eyebrow) {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 46ch;
}

.page-about .about-history__intro .note {
  margin: 6px 0 0;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--paper);
  border-left: 1px solid var(--gold);
  padding-left: 12px;
}

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

.page-about .about-history__media {
  border: 1px solid var(--line);
  margin: 0;
}

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

.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-jump .chip {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-jump .chip:hover,
.page-about .about-jump .chip:focus-visible {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

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

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(22px, 3vw, 32px) 20px;
  border-left: 1px solid var(--about-line-soft);
  display: grid;
  gap: 6px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 5px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(66, 245, 230, 0.13);
}

.page-about .about-timeline__item:nth-child(4)::before {
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(185, 138, 47, 0.16);
}

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

.page-about .about-timeline__year {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .about-timeline__item h3 {
  font-size: clamp(17px, 2.4vw, 21px);
  font-weight: 700;
  color: var(--paper);
  line-height: 1.4;
}

.page-about .about-timeline__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 编辑部（纸张区） ---------- */
.page-about .about-team {
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--about-paper-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-paper-line) 1px, transparent 1px);
  background-size: 34px 34px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-team .display-2 {
  color: var(--ink);
  text-shadow: 3px 3px 0 rgba(198, 107, 78, 0.18);
}

.page-about .about-team .eyebrow {
  color: #0c5f59;
}

.page-about .about-team__head {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(22px, 3.4vw, 36px);
}

.page-about .about-team__head p:not(.eyebrow) {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: #2c3550;
  max-width: 54ch;
}

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

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

.page-about .about-role {
  position: relative;
  background: var(--paper);
  padding: 14px 16px;
  display: grid;
  gap: 6px;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-role:hover,
.page-about .about-role:focus-within {
  background: #fffdf6;
  box-shadow: inset 3px 0 0 var(--orange);
}

.page-about .about-role__num {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: #8a7448;
}

.page-about .about-role__name {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
}

.page-about .about-role__name .mono {
  font-size: 12px;
  color: #0c5f59;
  border: 1px solid rgba(12, 95, 89, 0.35);
  padding: 1px 6px;
}

.page-about .about-role__duty {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: #39415c;
}

.page-about .about-team__media {
  margin: 0;
  border: 1px solid var(--about-paper-line);
  background: var(--ink);
}

.page-about .about-team__media .media__caption {
  color: var(--mist);
  font-size: 12px;
  padding: 8px 10px;
  background: var(--ink-2);
}

.page-about .about-team__rhythm {
  margin: clamp(18px, 3vw, 28px) 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: #2c3550;
  border-top: 1px dashed rgba(11, 16, 38, 0.28);
  padding-top: 12px;
}

.page-about .about-team__rhythm .mono {
  color: var(--clay);
  margin-right: 8px;
  letter-spacing: 0.12em;
}

/* ---------- 审核流程 ---------- */
.page-about .about-review {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-review__intro {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .about-review__intro p:not(.eyebrow) {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 46ch;
}

.page-about .about-review__media {
  margin: 8px 0 0;
  border: 1px solid var(--line);
}

.page-about .about-review__steps {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-about .about-step {
  border: 1px solid var(--line);
  background: var(--ink-2);
  transition: border-color var(--dur) var(--ease);
}

.page-about .about-step:hover,
.page-about .about-step[open] {
  border-color: var(--line-strong);
}

.page-about .about-step summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

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

.page-about .about-step summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cyan);
}

.page-about .about-step[open] summary::after {
  content: "−";
  color: var(--orange);
}

.page-about .about-step__idx {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  border: 1px solid rgba(66, 245, 230, 0.4);
  padding: 2px 7px;
}

.page-about .about-step p {
  margin: 0;
  padding: 0 16px 16px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-about .about-step:nth-child(2) .about-step__idx {
  color: var(--moss);
  border-color: rgba(124, 154, 114, 0.55);
}

.page-about .about-step:nth-child(3) .about-step__idx {
  color: var(--clay);
  border-color: rgba(198, 107, 78, 0.55);
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-scale {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  background:
    linear-gradient(120deg, rgba(185, 138, 47, 0.09), transparent 62%),
    var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-about .about-scale__head {
  display: grid;
  gap: 10px;
}

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

.page-about .about-scale__cell {
  display: grid;
  gap: 6px;
  padding: 16px 14px;
  background: var(--ink-2);
  transition: background var(--dur) var(--ease);
}

.page-about .about-scale__cell:hover {
  background: var(--ink-3);
}

.page-about .about-scale__num {
  font-size: clamp(20px, 3.4vw, 30px);
  color: var(--orange);
  letter-spacing: -0.01em;
}

.page-about .about-scale__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-partners__intro {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .about-partners__intro p:not(.eyebrow) {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 46ch;
}

.page-about .about-partners__board {
  display: grid;
  border-top: 1px solid var(--line-strong);
}

.page-about .about-partners__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-partners__row:hover {
  background: rgba(66, 245, 230, 0.04);
  border-bottom-color: var(--cyan);
}

.page-about .about-partners__key {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-about .about-partners__val {
  font-size: clamp(19px, 2.8vw, 26px);
  color: var(--gold);
}

.page-about .about-partners__desc {
  font-size: 14px;
  line-height: 1.72;
  color: var(--paper);
  opacity: 0.86;
}

/* ---------- 品牌原则 ---------- */
.page-about .about-promise {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-promise__intro {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .about-promise__intro p:not(.eyebrow) {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 46ch;
}

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

.page-about .about-promise__item {
  display: grid;
  gap: 8px;
  padding: 18px 16px;
  background: var(--ink-2);
  position: relative;
  transition: background var(--dur) var(--ease);
}

.page-about .about-promise__item:hover {
  background: var(--ink-3);
}

.page-about .about-promise__idx {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .about-promise__item h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
  line-height: 1.45;
}

.page-about .about-promise__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 行动区 ---------- */
.page-about .about-cta {
  display: grid;
  gap: 20px;
  background:
    repeating-linear-gradient(135deg, rgba(255, 106, 61, 0.06) 0 2px, transparent 2px 12px),
    var(--ink-2);
  border: 1px solid var(--line-strong);
  margin: clamp(28px, 4vw, 56px) var(--about-pad) 0;
  padding: clamp(22px, 4vw, 44px);
}

.page-about .about-cta__text {
  display: grid;
  gap: 10px;
}

.page-about .about-cta__text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 56ch;
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-about .about-partners__row {
    grid-template-columns: 130px 190px 1fr;
    align-items: baseline;
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: 5fr 7fr;
    align-items: end;
  }

  .page-about .about-hero__aside {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    justify-self: start;
    padding-left: 0;
    padding-top: 10px;
    border-left: 0;
    border-top: 2px solid var(--orange);
    letter-spacing: 0.3em;
  }

  .page-about .about-history {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .about-review {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-about .about-partners,
  .page-about .about-promise,
  .page-about .about-scale {
    grid-template-columns: 4fr 8fr;
    align-items: start;
  }

  .page-about .about-cta {
    grid-template-columns: 7fr 5fr;
    align-items: center;
  }

  .page-about .about-cta__links {
    justify-content: flex-end;
  }

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

@media (min-width: 1200px) {
  .page-about .about-hero,
  .page-about .about-history,
  .page-about .about-team,
  .page-about .about-review,
  .page-about .about-scale,
  .page-about .about-partners,
  .page-about .about-promise {
    padding-left: clamp(32px, 5vw, 88px);
    padding-right: clamp(32px, 5vw, 88px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-scale__cell,
  .page-about .about-promise__item,
  .page-about .about-partners__row,
  .page-about .about-jump .chip,
  .page-about .about-step {
    transition: none;
  }
}
<<<END>>>