.page-about {
  --about-band: #10271E;
  --about-cream-soft: #EFE5D4;
}

/* ============ 首屏 ============ */
.page-about .hero {
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
  color: var(--cream);
  padding: clamp(40px, 7vw, 96px) var(--gutter) clamp(48px, 6vw, 88px);
  position: relative;
  overflow: hidden;
}

.page-about .hero::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -80px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  border: 1px solid rgba(217, 164, 65, 0.28);
  box-shadow: 0 0 0 34px rgba(217, 164, 65, 0.05);
  pointer-events: none;
}

.page-about .hero__grid {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-about .hero__lead {
  position: relative;
  z-index: 1;
}

.page-about .eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--celadon);
  text-transform: uppercase;
  margin: 0 0 18px;
}

.page-about .hero__title {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(38px, 7.4vw, 78px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  margin: 0 0 22px;
  color: var(--cream);
}

.page-about .hero__intro {
  font-size: clamp(16px, 1.35vw, 18px);
  line-height: 1.85;
  color: rgba(244, 237, 224, 0.82);
  max-width: 46ch;
  margin: 0 0 30px;
}

.page-about .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 38px;
}

.page-about .hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(22px, 4vw, 52px);
  margin: 0;
  padding-top: 26px;
  border-top: 1px solid rgba(127, 179, 172, 0.28);
}

.page-about .hero__facts > div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .hero__facts dt {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(30px, 3.4vw, 44px);
  line-height: 1;
  color: var(--amber);
}

.page-about .hero__facts dd {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: rgba(244, 237, 224, 0.66);
}

.page-about .hero__side {
  position: relative;
  z-index: 1;
}

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

.page-about .hero__side .figure__cap {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(244, 237, 224, 0.6);
}

/* ============ 通用章节 ============ */
.page-about .section {
  padding: clamp(48px, 7vw, 92px) var(--gutter);
  max-width: var(--content-max);
  margin: 0 auto;
}

.page-about .section__head {
  border-top: 1px solid var(--verdigris);
  padding-top: 22px;
  margin-bottom: clamp(28px, 4vw, 46px);
  max-width: 62ch;
}

.page-about .section__title {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(28px, 4.2vw, 46px);
  line-height: 1.12;
  color: var(--espresso);
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}

.page-about .section__lead {
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.85;
  color: #4A423A;
  margin: 0;
}

.page-about .section a {
  color: var(--celadon-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-about .section a:hover {
  color: var(--amber-deep);
}

/* ============ 沙龙三件事 标签页 ============ */
.page-about .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-bottom: 1px solid rgba(88, 117, 106, 0.4);
  padding-bottom: 0;
  margin-bottom: 26px;
}

.page-about .tabs__tab {
  appearance: none;
  border: 1px solid transparent;
  border-bottom: none;
  background: transparent;
  font-family: var(--sans);
  font-size: 15px;
  color: var(--verdigris);
  padding: 12px 20px;
  border-radius: var(--radius) var(--radius) 0 0;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .tabs__tab:hover {
  color: var(--espresso);
  background: rgba(217, 164, 65, 0.1);
}

.page-about .tabs__tab[aria-selected="true"] {
  background: var(--cream);
  color: var(--espresso);
  border-color: rgba(88, 117, 106, 0.4);
  font-weight: 600;
  box-shadow: inset 0 3px 0 var(--amber);
}

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

.page-about .tabs__panel {
  animation: about-fade var(--dur) var(--ease);
}

.page-about .ritual {
  background: var(--cream);
  border-left: 4px solid var(--amber);
  padding: clamp(22px, 3vw, 34px);
  border-radius: 0 var(--radius) var(--radius) 0;
  max-width: 74ch;
}

.page-about .ritual__title {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(20px, 2.2vw, 26px);
  margin: 0 0 14px;
  color: var(--espresso);
}

.page-about .ritual p {
  font-size: 16px;
  line-height: 1.9;
  color: #3A332C;
  margin: 0 0 14px;
}

.page-about .ritual__note {
  font-size: 14px;
  color: var(--verdigris) !important;
  padding-top: 12px;
  border-top: 1px dashed rgba(88, 117, 106, 0.45);
  margin-bottom: 0 !important;
}

@keyframes about-fade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ 主线 + 纵向刻度 ============ */
.page-about .section--timeline {
  background: var(--cream);
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.page-about .section--timeline .section__head,
.page-about .spine {
  max-width: var(--content-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.page-about .spine {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}

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

.page-about .spine__body {
  display: grid;
  gap: clamp(24px, 3.4vw, 42px);
}

.page-about .spine__stop {
  position: relative;
  padding-left: 22px;
  border-left: 2px solid rgba(217, 164, 65, 0.55);
}

.page-about .spine__stop::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px var(--cream);
}

.page-about .spine__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--celadon-deep);
  margin: 0 0 8px;
}

.page-about .spine__name {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(21px, 2.5vw, 30px);
  line-height: 1.2;
  color: var(--espresso);
  margin: 0 0 14px;
}

.page-about .spine__stop > p {
  font-size: 16px;
  line-height: 1.9;
  color: #3A332C;
  margin: 0 0 14px;
}

.page-about .spine__link {
  font-size: 14px;
  margin: 0;
}

.page-about .spine__figure {
  margin-top: 20px;
}

/* ============ 四类栏目 清单 ============ */
.page-about .ledger {
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(88, 117, 106, 0.35);
}

.page-about .ledger__row {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 2.6vw, 30px) 0;
  border-bottom: 1px solid rgba(88, 117, 106, 0.35);
}

.page-about .ledger__id {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--celadon-deep);
  margin: 0;
}

.page-about .ledger__name {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(20px, 2.2vw, 26px);
  color: var(--espresso);
  margin: 0;
}

.page-about .ledger__who {
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--verdigris);
  margin: 0;
}

.page-about .ledger__desc {
  font-size: 15.5px;
  line-height: 1.85;
  color: #3A332C;
  margin: 0;
}

.page-about .ledger__cadence {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--verdigris);
  margin: 4px 0 0;
}

/* ============ 团队 ============ */
.page-about .section--team {
  background: var(--about-band);
  color: var(--cream);
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.page-about .section--team .section__head,
.page-about .team {
  max-width: var(--content-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.page-about .section--team .section__head {
  border-top-color: rgba(127, 179, 172, 0.45);
}

.page-about .section--team .section__title {
  color: var(--cream);
}

.page-about .section--team .section__lead {
  color: rgba(244, 237, 224, 0.78);
}

.page-about .section--team .eyebrow {
  color: var(--amber-light);
}

.page-about .team {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-about .team__main .figure {
  margin: 0 0 26px;
}

.page-about .team__main .figure__cap {
  margin-top: 12px;
  font-size: 13px;
  color: rgba(244, 237, 224, 0.62);
}

.page-about .team__sub {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(20px, 2.2vw, 27px);
  color: var(--cream);
  margin: 0 0 14px;
}

.page-about .team__main p {
  font-size: 16px;
  line-height: 1.92;
  color: rgba(244, 237, 224, 0.8);
  margin: 0 0 16px;
}

.page-about .team__side {
  display: grid;
  gap: 18px;
}

.page-about .note-card {
  padding: 22px 24px;
  border-radius: var(--radius);
}

.page-about .note-card--plain {
  background: var(--cream);
  color: var(--espresso);
}

.page-about .note-card__title {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 18px;
  margin: 0 0 14px;
}

.page-about .panel--felt .note-card__title {
  color: var(--amber-light);
}

.page-about .note-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-about .note-card__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: baseline;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(244, 237, 224, 0.84);
}

.page-about .note-card__n {
  font-family: var(--mono);
  font-size: 15px;
  color: var(--celadon);
  letter-spacing: 0.04em;
}

.page-about .note-card__list--dark li {
  grid-template-columns: 1fr;
  color: #3A332C;
  padding-left: 14px;
  position: relative;
}

.page-about .note-card__list--dark li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  background: var(--amber);
  border-radius: 50%;
}

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: rgba(88, 117, 106, 0.35);
}

.page-about .timeline__item {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 0 0 clamp(26px, 3.4vw, 40px) 34px;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--amber);
  background: var(--cream);
}

.page-about .timeline__item--current::before {
  background: var(--amber);
  box-shadow: 0 0 0 5px rgba(217, 164, 65, 0.22);
}

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

.page-about .timeline__year {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1;
  color: var(--espresso);
  margin: 0;
}

.page-about .timeline__item--current .timeline__year {
  color: var(--amber-deep);
}

.page-about .timeline__name {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 16px;
  color: var(--espresso);
  margin: 0 0 8px;
}

.page-about .timeline__body p {
  font-size: 15.5px;
  line-height: 1.85;
  color: #3A332C;
  margin: 0;
  max-width: 62ch;
}

/* ============ 公示 ============ */
.page-about .section--scope {
  background: var(--about-cream-soft);
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.page-about .scope {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-about .scope__title {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(28px, 4vw, 44px);
  color: var(--espresso);
  margin: 0 0 16px;
}

.page-about .scope__lead {
  font-size: 16px;
  line-height: 1.9;
  color: #3A332C;
  margin: 0 0 26px;
  max-width: 56ch;
}

.page-about .scope__list {
  margin: 0;
  border-top: 1px solid rgba(88, 117, 106, 0.4);
}

.page-about .scope__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(88, 117, 106, 0.4);
}

.page-about .scope__row dt {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--verdigris);
}

.page-about .scope__row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--espresso);
  word-break: break-word;
}

.page-about .scope__row dd a {
  color: var(--celadon-deep);
}

.page-about .scope__side {
  display: grid;
  gap: 18px;
}

.page-about .scope__card {
  padding: 24px 26px;
  border-radius: var(--radius);
}

.page-about .scope__card a {
  color: var(--celadon-deep);
}

.page-about .scope__card .btn {
  margin-top: 18px;
}

.page-about .scope__card-title {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 19px;
  margin: 0 0 12px;
}

.page-about .panel--felt .scope__card-title {
  color: var(--amber-light);
}

.page-about .scope__card p {
  font-size: 15px;
  line-height: 1.85;
  margin: 0;
}

.page-about .panel--felt.scope__card p {
  color: rgba(244, 237, 224, 0.82);
}

.page-about .panel--felt.scope__card a {
  color: var(--amber-light);
}

.page-about .scope__card--plain {
  background: transparent;
  border: 1px solid rgba(88, 117, 106, 0.4);
  color: var(--espresso);
}

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

.page-about .scope__links li {
  font-size: 15px;
  line-height: 1.7;
  padding-left: 16px;
  position: relative;
}

.page-about .scope__links li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--celadon-deep);
}

/* ============ 图片基础 ============ */
.page-about .figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-about .hero__side .figure__img {
  border-radius: var(--radius-lg);
}

/* ============ 响应式 ============ */
@media (min-width: 720px) {
  .page-about .ledger__row {
    grid-template-columns: 90px minmax(180px, 1fr) minmax(0, 1.6fr);
    gap: 10px 28px;
    align-items: baseline;
  }

  .page-about .ledger__id { grid-row: 1; grid-column: 1; }
  .page-about .ledger__name { grid-row: 1; grid-column: 2; }
  .page-about .ledger__desc { grid-row: 2; grid-column: 2 / -1; }
  .page-about .ledger__who { grid-row: 1; grid-column: 3; align-self: center; }
  .page-about .ledger__cadence { grid-row: 3; grid-column: 2 / -1; }

  .page-about .scope__row {
    grid-template-columns: 140px 1fr;
    gap: 4px 22px;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-about .hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-about .hero::after {
    width: 520px;
    height: 520px;
    right: -160px;
    top: -120px;
  }

  .page-about .spine {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 32px;
  }

  .page-about .spine__axis {
    display: block;
    position: relative;
    border-right: 1px solid rgba(88, 117, 106, 0.4);
  }

  .page-about .spine__axis::before {
    content: "";
    position: absolute;
    right: -5px;
    top: 8%;
    height: 220px;
    width: 8px;
    background: var(--amber);
    border-radius: var(--pill);
  }

  .page-about .spine__tick {
    position: absolute;
    right: 0;
    width: 20px;
    height: 1px;
    background: rgba(88, 117, 106, 0.5);
  }

  .page-about .spine__tick:nth-child(1) { top: 8%; }
  .page-about .spine__tick:nth-child(2) { top: 33%; }
  .page-about .spine__tick:nth-child(3) { top: 58%; }
  .page-about .spine__tick:nth-child(4) { top: 83%; }

  .page-about .spine__body {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 34px 44px;
  }

  .page-about .spine__stop:nth-child(3n) {
    grid-column: 1 / -1;
  }

  .page-about .team {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }

  .page-about .scope {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .timeline__item {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 0 32px;
    align-items: baseline;
    padding-left: 40px;
  }

  .page-about .timeline__item::before {
    top: 8px;
  }

  .page-about .timeline::before {
    left: 9px;
  }

  .page-about .timeline__year {
    text-align: right;
    position: relative;
    left: -8px;
  }
}

@media (min-width: 1100px) {
  .page-about .hero__side {
    margin-right: -28px;
  }

  .page-about .team__side {
    margin-top: 34px;
  }
}

/* ============ 动效降级 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-about .tabs__panel {
    animation: none;
  }
  .page-about .tabs__tab {
    transition: none;
  }
}