.page-about {
  --about-hair: rgba(200, 164, 92, 0.28);
  --about-rule: linear-gradient(
    180deg,
    rgba(200, 164, 92, 0) 0%,
    rgba(200, 164, 92, 0.85) 9%,
    rgba(200, 164, 92, 0.85) 91%,
    rgba(200, 164, 92, 0) 100%
  );
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .crumb {
  padding: 16px 0 10px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 40px 0 56px;
  background:
    radial-gradient(120% 92% at 86% 8%, rgba(200, 164, 92, 0.16) 0%, rgba(200, 164, 92, 0) 58%),
    linear-gradient(180deg, var(--ink) 0%, var(--lacquer) 100%);
  border-bottom: 1px solid var(--hair);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -16%;
  bottom: -70%;
  width: 70%;
  height: 130%;
  background: linear-gradient(158deg, rgba(181, 52, 43, 0.15), rgba(200, 164, 92, 0) 62%);
  transform: skewY(-8deg);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 16px;
  max-width: 900px;
}

.page-about .about-hero__eyebrow {
  margin: 0;
  font-family: var(--font-accent);
  font-size: 13px;
  letter-spacing: 0.28em;
  color: var(--gold);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(38px, 6.6vw, 76px);
  line-height: 1.14;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-about .about-hero__accent {
  background: linear-gradient(100deg, var(--gold) 0%, var(--gold-light) 48%, var(--gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.9;
  color: var(--body-ink);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--hair);
  background: var(--hair);
}

.page-about .about-hero__stats li {
  display: grid;
  gap: 4px;
  padding: 16px 16px 18px;
  background: rgba(22, 24, 26, 0.94);
}

.page-about .about-hero__stats strong {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold-light);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__stats span {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mute);
}

/* ---------- 章节通用 ---------- */
.page-about .sec {
  position: relative;
  padding: 54px 0;
}

.page-about .sec__head {
  max-width: 740px;
  margin-bottom: 34px;
}

.page-about .sec__no {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 12px;
  font-family: var(--font-accent);
  font-size: 13px;
  letter-spacing: 0.26em;
  color: var(--gold);
}

.page-about .sec__no::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, rgba(200, 164, 92, 0.75), rgba(200, 164, 92, 0));
}

.page-about .sec__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(28px, 4.4vw, 44px);
  line-height: 1.24;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-about .sec__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--body-ink);
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 46px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--about-rule);
}

.page-about .tl {
  position: relative;
  padding-bottom: 30px;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: -40px;
  top: 12px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cinnabar);
  box-shadow: 0 0 0 4px rgba(181, 52, 43, 0.16);
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .tl:hover::before,
.page-about .tl:focus-within::before {
  transform: scale(1.15);
  box-shadow: 0 0 0 7px rgba(181, 52, 43, 0.2);
}

.page-about .tl__year {
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  transition: color var(--dur) var(--ease);
}

.page-about .tl:hover .tl__year,
.page-about .tl:focus-within .tl__year {
  color: var(--gold-light);
}

.page-about .tl__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .tl__body p {
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--body-ink);
}

/* ---------- 宽幅图 ---------- */
.page-about .about-wide {
  margin: 0;
  padding: 8px 0 30px;
  background: linear-gradient(180deg, var(--ink) 0%, var(--lacquer) 100%);
}

.page-about .about-wide .frame {
  border: 1px solid var(--hair);
}

.page-about .about-wide .frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-wide figcaption {
  margin-top: 12px;
  font-family: var(--font-accent);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--mute);
}

/* ---------- 空间格局 ---------- */
.page-about .sec--space {
  background: linear-gradient(180deg, var(--lacquer) 0%, var(--ink) 100%);
}

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

.page-about .floorplan-card {
  border: 1px solid var(--about-hair);
  background: linear-gradient(165deg, rgba(200, 164, 92, 0.07), rgba(14, 15, 16, 0.92) 52%);
  padding: 18px 16px 14px;
}

.page-about .floorplan {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .floorplan .room {
  fill: rgba(200, 164, 92, 0.07);
  stroke: var(--gold);
  stroke-width: 1;
  transition: fill var(--dur) var(--ease);
}

.page-about .floorplan .room:hover {
  fill: rgba(200, 164, 92, 0.2);
}

.page-about .floorplan .room-label {
  fill: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: 0.08em;
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none;
}

.page-about .floorplan .lounge {
  fill: rgba(78, 122, 106, 0.22);
  stroke: var(--celadon);
  stroke-width: 1;
}

.page-about .floorplan .lounge-label {
  fill: var(--paper);
  font-family: var(--font-accent);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-anchor: middle;
  dominant-baseline: middle;
}

.page-about .floorplan-card__note {
  margin: 12px 0 0;
  font-family: var(--font-accent);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--mute);
}

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

.page-about .space-side .frame {
  border: 1px solid var(--hair);
}

.page-about .space-side .frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .space-side__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--body-ink);
}

.page-about .room-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-about .room-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 14px;
  background: rgba(14, 15, 16, 0.94);
  transition: background var(--dur) var(--ease);
}

.page-about .room-list li:hover {
  background: rgba(36, 30, 24, 0.94);
}

.page-about .room-list__name {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.1em;
  color: var(--gold-light);
}

.page-about .room-list__meta {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mute);
}

/* ---------- 会员等级 ---------- */
.page-about .sec--tier {
  background: var(--lacquer);
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
}

.page-about .tier-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .tier {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 26px 22px 24px;
  border: 1px solid var(--hair);
  background: linear-gradient(170deg, rgba(200, 164, 92, 0.07), rgba(14, 15, 16, 0.9) 48%);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-about .tier:hover,
.page-about .tier:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(200, 164, 92, 0.72);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.44);
}

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

.page-about .tier__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 30px;
  letter-spacing: 0.16em;
  color: var(--gold-light);
}

.page-about .tier__intro {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mute);
}

.page-about .tier__list {
  margin: 4px 0 0;
  display: grid;
  gap: 0;
}

.page-about .tier__row {
  display: grid;
  gap: 5px;
  padding: 13px 0;
  border-top: 1px solid var(--hair);
}

.page-about .tier__row dt {
  font-family: var(--font-accent);
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .tier__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-ink);
}

/* ---------- 团队 ---------- */
.page-about .sec--crew {
  background: linear-gradient(180deg, var(--ink) 0%, var(--lacquer) 100%);
}

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

.page-about .crew__item {
  display: grid;
  gap: 6px;
  padding: 20px 18px 22px;
  background: rgba(14, 15, 16, 0.94);
  transition: background var(--dur) var(--ease);
}

.page-about .crew__item:hover {
  background: rgba(36, 30, 24, 0.94);
}

.page-about .crew__num {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 46px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold-light);
  font-variant-numeric: tabular-nums;
}

.page-about .crew__label {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.12em;
  color: var(--paper);
}

.page-about .crew__note {
  font-size: 13px;
  line-height: 1.8;
  color: var(--mute);
}

.page-about .crew-tail {
  margin-top: 22px;
  padding-left: 16px;
  border-left: 2px solid var(--cinnabar);
}

.page-about .crew-tail p {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--body-ink);
}

/* ---------- 纸面章节：荣誉 ---------- */
.page-about .sec--paper {
  background: var(--paper);
  color: var(--brown);
}

.page-about .sec--paper .sec__no {
  color: #8A6516;
}

.page-about .sec--paper .sec__no::after {
  background: linear-gradient(90deg, rgba(138, 101, 22, 0.6), rgba(138, 101, 22, 0));
}

.page-about .sec--paper .sec__title {
  color: var(--brown);
}

.page-about .sec--paper .sec__lead {
  color: #4A4038;
}

.page-about .honor {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid rgba(36, 30, 24, 0.22);
}

.page-about .honor__item {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(36, 30, 24, 0.16);
}

.page-about .honor__num {
  font-family: var(--font-display);
  font-size: clamp(34px, 5.4vw, 52px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: #8A6516;
  font-variant-numeric: tabular-nums;
}

.page-about .honor__num span {
  margin-left: 4px;
  font-size: 0.44em;
  letter-spacing: 0.06em;
}

.page-about .honor__label {
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--brown);
}

.page-about .honor__note {
  font-size: 13px;
  line-height: 1.8;
  color: #6A5E52;
}

/* ---------- 会员侧写 ---------- */
.page-about .sec--crowd {
  background: linear-gradient(180deg, var(--lacquer) 0%, var(--ink) 100%);
}

.page-about .crowd-grid {
  display: grid;
  gap: 26px;
}

.page-about .crowd-media .frame {
  border: 1px solid var(--hair);
}

.page-about .crowd-media .frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .crowd-media__note {
  margin: 12px 0 0;
  font-family: var(--font-accent);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--mute);
}

.page-about .crowd-body .sec__title {
  margin-bottom: 14px;
}

.page-about .crowd-stats {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-about .crowd-stats li {
  display: grid;
  gap: 6px;
  padding: 16px 14px 18px;
  background: rgba(22, 24, 26, 0.94);
}

.page-about .crowd-stats strong {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 36px);
  line-height: 1;
  color: var(--gold-light);
  font-variant-numeric: tabular-nums;
}

.page-about .crowd-stats strong span {
  margin-left: 3px;
  font-size: 0.5em;
  letter-spacing: 0.04em;
}

.page-about .crowd-stats span {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mute);
}

.page-about .crowd-tail {
  margin: 22px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--body-ink);
}

/* ---------- 收束 ---------- */
.page-about .sec--next {
  padding: 46px 0 64px;
  background: linear-gradient(180deg, var(--ink) 0%, var(--brown) 100%);
  border-top: 1px solid var(--hair);
}

.page-about .next__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 34px);
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-about .next__lead {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--body-ink);
}

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

.page-about .next__links li {
  background: rgba(14, 15, 16, 0.9);
}

.page-about .next__links a {
  display: block;
  padding: 16px 18px;
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.1em;
  color: var(--gold-light);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease),
    padding-left var(--dur) var(--ease);
}

.page-about .next__links a:hover,
.page-about .next__links a:focus-visible {
  background: rgba(36, 30, 24, 0.9);
  border-left-color: var(--cinnabar);
  padding-left: 24px;
}

.page-about .next__links a:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: -3px;
}

/* ---------- 窄屏细节 ---------- */
@media (max-width: 520px) {
  .page-about .about-hero__stats {
    grid-template-columns: 1fr;
  }

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

  .page-about .floorplan-card {
    padding: 12px 10px 10px;
  }
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-about .sec {
    padding: 66px 0;
  }

  .page-about .about-hero {
    padding: 56px 0 72px;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .room-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .crew {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .timeline {
    padding-left: 0;
  }

  .page-about .timeline::before {
    left: 175px;
  }

  .page-about .tl {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    grid-column-gap: 60px;
    padding-bottom: 40px;
  }

  .page-about .tl::before {
    left: 171px;
    top: 13px;
  }

  .page-about .tl__year {
    text-align: right;
  }

  .page-about .tier-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .space-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .page-about .room-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .honor {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 28px;
  }

  .page-about .crowd-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 40px;
    align-items: start;
  }

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