.page-about {
  --about-glow: 0 24px 48px -34px rgba(0, 0, 0, 0.95);
  padding-block: clamp(24px, 3vw, 44px) clamp(72px, 10vw, 128px);
  overflow-wrap: break-word;
}

.page-about .crumbs {
  margin-bottom: clamp(28px, 4vw, 48px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-bottom: clamp(36px, 5vw, 56px);
  border-bottom: 1px solid var(--hairline);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .about-hero__title {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(30px, 5.2vw, 50px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--text);
  max-width: 22em;
}

.page-about .about-hero__lede {
  margin: 0 0 clamp(28px, 4vw, 40px);
  max-width: 40em;
}

.page-about .about-hero__ledger {
  list-style: none;
  margin: 0;
  padding: clamp(18px, 3vw, 26px) 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 20px;
}

.page-about .about-hero__ledger > li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-about .ledger__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-dim);
}

.page-about .ledger__val {
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.2vw, 21px);
  letter-spacing: 0.01em;
  color: var(--gold-lift);
  white-space: nowrap;
}

@media (min-width: 760px) {
  .page-about .about-hero__ledger {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 章节与网格 ---------- */
.page-about .section {
  margin-top: clamp(60px, 8vw, 108px);
}

.page-about .section__head {
  margin-bottom: clamp(24px, 3.5vw, 40px);
}

.page-about .grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 20px;
}

.page-about .grid > * {
  grid-column: 1 / -1;
  min-width: 0;
}

@media (min-width: 900px) {
  .page-about .grid > .span-12 { grid-column: span 12; }
  .page-about .grid > .span-8 { grid-column: span 8; }
  .page-about .grid > .span-7 { grid-column: span 7; }
  .page-about .grid > .span-6 { grid-column: span 6; }
  .page-about .grid > .span-5 { grid-column: span 5; }
  .page-about .grid > .span-4 { grid-column: span 4; }
}

/* ---------- 图 ---------- */
.page-about .about-figure {
  margin: 0 0 clamp(32px, 4.5vw, 52px);
}

.page-about .about-figure .figure__frame,
.page-about .local__figure .figure__frame {
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(155deg, #2C1B4A 0%, #1E1233 58%, #150C26 100%);
}

.page-about .local__figure .figure__frame {
  background: linear-gradient(150deg, #16707A 0%, #2C1B4A 58%, #1E1233 100%);
}

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

.page-about .crew-figure {
  margin: 0 0 clamp(28px, 3.6vw, 40px);
}

.page-about .crew-figure .figure__frame {
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(200deg, #2C1B4A 0%, #1E1233 70%);
}

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

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 8px;
  bottom: 28px;
  width: 1px;
  background: linear-gradient(
    180deg,
    rgba(201, 162, 74, 0) 0%,
    rgba(201, 162, 74, 0.42) 6%,
    rgba(201, 162, 74, 0.42) 94%,
    rgba(201, 162, 74, 0) 100%
  );
}

.page-about .timeline__item {
  position: relative;
  padding-left: 46px;
}

.page-about .timeline__item + .timeline__item {
  margin-top: 4px;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 20px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  background: var(--ink-800);
  box-shadow: 0 0 0 5px var(--ink-900);
  z-index: 1;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .timeline__item:hover::before {
  background: var(--gold);
}

.page-about .stage__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "idx name caret"
    "idx line caret";
  align-items: center;
  gap: 6px 14px;
  width: 100%;
  margin: 0;
  padding: 14px 6px 16px 2px;
  text-align: left;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  color: inherit;
  font: inherit;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease);
}

.page-about .stage__head:hover {
  border-bottom-color: var(--hairline);
}

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

.page-about .stage__index {
  grid-area: idx;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-about .stage__name {
  grid-area: name;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.4;
  color: var(--text);
  transition: color var(--dur) var(--ease);
}

.page-about .stage__head:hover .stage__name {
  color: var(--gold-lift);
}

.page-about .stage__line {
  grid-area: line;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-dim);
}

.page-about .stage__caret {
  grid-area: caret;
  width: 10px;
  height: 10px;
  margin-right: 8px;
  border-right: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
  transform: rotate(45deg);
  align-self: center;
  transition: transform var(--dur) var(--ease);
}

.page-about .stage__head[aria-expanded="true"] .stage__caret {
  transform: rotate(-135deg);
}

.page-about .stage__panel {
  overflow: hidden;
}

.page-about .stage__body {
  margin: 0;
  padding: 18px 6px 26px 2px;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-dim);
}

/* ---------- 团队说明牌 ---------- */
.page-about .about-team {
  margin-top: 0;
}

.page-about .crew {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(44, 27, 74, 0.92) 0%, rgba(30, 18, 51, 0.94) 100%);
  box-shadow: var(--about-glow);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .crew::after {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  height: 1px;
  width: 0;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(201, 162, 74, 0) 100%);
  transition: width calc(var(--dur) * 2.4) var(--ease);
}

.page-about .crew:hover,
.page-about .crew:focus-within {
  border-color: var(--hairline);
  transform: translateY(-3px);
}

.page-about .crew:hover::after,
.page-about .crew:focus-within::after {
  width: calc(100% + 2px);
}

.page-about .crew__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-about .crew__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(18px, 2.4vw, 23px);
  line-height: 1.35;
  color: var(--text);
}

.page-about .crew__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-about .crew__text a {
  color: var(--gold-lift);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline);
  transition: border-color var(--dur) var(--ease);
}

.page-about .crew__text a:hover {
  border-bottom-color: var(--gold);
}

.page-about .crew__list {
  list-style: none;
  margin: 6px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .crew__list > li {
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-about .crew__key {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold-lift);
  vertical-align: 1px;
}

/* ---------- 迭代刻度 ---------- */
.page-about .cadence {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .cadence__beat {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 0 18px 22px;
  border-bottom: 1px solid var(--line);
}

.page-about .cadence__beat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--peacock);
}

.page-about .cadence__beat:last-child::before {
  background: var(--amber);
}

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

.page-about .cadence__week {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .cadence__text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-about .cadence__foot {
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding-top: clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--hairline);
  max-width: 44em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .cadence__foot a {
  color: var(--gold-lift);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline);
  transition: border-color var(--dur) var(--ease);
}

.page-about .cadence__foot a:hover {
  border-bottom-color: var(--gold);
}

@media (min-width: 900px) {
  .page-about .cadence {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    border-top: 0;
    padding-top: 36px;
    position: relative;
  }

  .page-about .cadence::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 14px;
    height: 1px;
    background: linear-gradient(
      90deg,
      rgba(201, 162, 74, 0) 0%,
      var(--hairline) 4%,
      var(--hairline) 96%,
      rgba(201, 162, 74, 0) 100%
    );
  }

  .page-about .cadence__beat {
    border-bottom: 0;
    border-left: 1px solid var(--line);
    padding: 18px 16px 0 16px;
    gap: 8px;
  }

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

  .page-about .cadence__beat::before {
    display: none;
  }

  .page-about .cadence__tick {
    display: block;
    position: absolute;
    top: -22px;
    left: 16px;
    width: 1px;
    height: 22px;
    background: var(--hairline);
  }

  .page-about .cadence__tick::before {
    content: "";
    position: absolute;
    top: -4px;
    left: -3px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--gold);
  }
}

/* ---------- 本地化服务 ---------- */
.page-about .local__figure {
  margin: 0;
}

.page-about .local__body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .local__body > p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-about .local__body a {
  color: var(--gold-lift);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline);
  transition: border-color var(--dur) var(--ease);
}

.page-about .local__body a:hover {
  border-bottom-color: var(--gold);
}

.page-about .local__facts {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .local__fact {
  display: grid;
  grid-template-columns: minmax(72px, auto) minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.page-about .local__fact-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  padding-top: 3px;
}

.page-about .local__fact-val {
  color: var(--text);
  line-height: 1.7;
  min-width: 0;
  word-break: break-word;
}

/* ---------- 服务承诺 ---------- */
.page-about .promise {
  padding: clamp(26px, 3.6vw, 46px);
  background: var(--paper);
  border: 1px solid var(--hairline);
  color: var(--ink-900);
}

.page-about .promise__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(20px, 2.8vw, 27px);
  line-height: 1.3;
  color: var(--ink-900);
}

.page-about .promise__note {
  margin: 0 0 22px;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.74;
  color: #5B4E7A;
}

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

.page-about .promise__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid rgba(30, 18, 51, 0.12);
}

.page-about .promise__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: #7A5A16;
}

.page-about .promise__text {
  font-size: 15px;
  line-height: 1.8;
  color: #29203D;
}

@media (min-width: 760px) {
  .page-about .promise__item {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }

  .page-about .promise__key {
    padding-top: 4px;
  }
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  margin-top: clamp(48px, 6vw, 76px);
  padding-top: clamp(24px, 3vw, 34px);
  border-top: 1px solid var(--hairline);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.page-about .about-cta__text {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.5;
  color: var(--text);
}

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

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 599px) {
  .page-about .timeline__item {
    padding-left: 34px;
  }

  .page-about .timeline::before {
    left: 11px;
  }

  .page-about .timeline__item::before {
    left: 5px;
    width: 12px;
    height: 12px;
    box-shadow: 0 0 0 4px var(--ink-900);
  }

  .page-about .stage__head {
    gap: 4px 10px;
    padding-left: 0;
  }

  .page-about .stage__caret {
    margin-right: 2px;
  }

  .page-about .stage__body {
    padding-left: 0;
    padding-right: 0;
  }

  .page-about .local__fact {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .page-about .local__fact-key {
    padding-top: 0;
  }
}