/* ===== 会馆文化 / page-about ===== */
.page-about {
  --ab-gold-line: linear-gradient(
    90deg,
    rgba(231, 178, 74, 0) 0%,
    rgba(231, 178, 74, 0.85) 14%,
    rgba(255, 217, 138, 1) 50%,
    rgba(231, 178, 74, 0.85) 86%,
    rgba(231, 178, 74, 0) 100%
  );
  display: block;
  padding-bottom: clamp(56px, 9vw, 110px);
  background: var(--k-deep);
  color: var(--k-silver);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  overflow-x: hidden;
}

.page-about .wd-wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* ---------- 面包屑 ---------- */
.page-about .wd-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(24px, 4vw, 40px);
  padding: 0;
  list-style: none;
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--k-ash);
}

.page-about .wd-breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-about .wd-breadcrumb li + li::before {
  content: "/";
  color: rgba(155, 176, 174, 0.5);
}

.page-about .wd-breadcrumb a {
  color: var(--k-ash);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-about .wd-breadcrumb a:hover {
  color: var(--k-gold-hi);
}

.page-about .wd-breadcrumb [aria-current="page"] {
  color: var(--k-silver);
}

/* ---------- 眉标 ---------- */
.page-about .wd-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--k-gold);
}

.page-about .wd-eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--k-gold);
  box-shadow: 0 0 12px rgba(231, 178, 74, 0.7);
}

/* ---------- 首屏 ---------- */
.page-about .about-cover {
  padding-top: clamp(96px, 13vw, 152px);
}

.page-about .about-cover__title {
  margin: 0;
  max-width: 14ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.3rem, 8.4vw, 5.4rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: #ffffff;
  text-wrap: balance;
}

.page-about .about-cover__lede {
  max-width: 48ch;
  margin: clamp(20px, 3vw, 32px) 0 0;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.9;
  color: rgba(232, 241, 239, 0.86);
}

.page-about .about-cover__figure {
  position: relative;
  margin: clamp(32px, 5vw, 56px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--k-ink);
  box-shadow: var(--shadow-2);
}

.page-about .about-cover__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 78% 10%, rgba(55, 214, 192, 0.16), transparent 62%),
    linear-gradient(180deg, rgba(4, 18, 20, 0) 42%, rgba(4, 18, 20, 0.7) 100%);
}

.page-about .about-cover__figure img {
  display: block;
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.page-about .about-cover__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: clamp(14px, 2vw, 20px);
  background: linear-gradient(180deg, rgba(18, 60, 63, 0.92), rgba(6, 40, 43, 0.92));
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--k-gold);
}

.page-about .about-fact__unit {
  margin-left: 3px;
  font-size: 0.5em;
  color: var(--k-gold-hi);
}

.page-about .about-fact__label {
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--k-ash);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  position: relative;
  margin-top: clamp(48px, 7vw, 88px);
  padding-top: clamp(36px, 5vw, 60px);
}

.page-about .about-chapter::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: var(--ab-gold-line);
  opacity: 0.6;
}

.page-about .about-chapter__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(10px, 2vw, 24px);
}

.page-about .about-chapter__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2rem, 5.2vw, 3.4rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: rgba(231, 178, 74, 0.92);
  text-shadow: 0 0 26px rgba(231, 178, 74, 0.3);
}

.page-about .about-chapter__body h2 {
  margin: 0 0 clamp(14px, 2vw, 22px);
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.page-about .about-chapter__body > p {
  max-width: 68ch;
  margin: 0 0 14px;
  color: rgba(232, 241, 239, 0.82);
}

.page-about .about-chapter__body > p:last-child {
  margin-bottom: 0;
}

/* ---------- 空间分栏 ---------- */
.page-about .about-space {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-space__fig {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--k-ink);
  box-shadow: var(--shadow-2);
}

.page-about .about-space__fig img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .about-space__cap {
  padding: 12px 16px;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--k-ash);
  background: rgba(4, 18, 20, 0.72);
  border-top: 1px solid var(--line);
}

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

.page-about .about-rooms__item {
  padding: clamp(16px, 2.2vw, 22px) clamp(16px, 2.2vw, 24px);
  border: 2px solid rgba(155, 176, 174, 0.18);
  border-left: 3px solid var(--k-gold);
  border-radius: var(--r-md);
  background: linear-gradient(120deg, rgba(18, 60, 63, 0.88), rgba(6, 40, 43, 0.6));
  box-shadow: var(--shadow-1);
}

.page-about .about-rooms__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.125rem;
  letter-spacing: 0.01em;
  color: var(--k-gold-hi);
}

.page-about .about-rooms__item p {
  margin: 0;
  font-size: 0.9375rem;
  color: rgba(232, 241, 239, 0.8);
}

/* ---------- 流程区块 ---------- */
.page-about .about-flow__fig {
  margin: clamp(24px, 3vw, 36px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--k-ink);
  box-shadow: var(--shadow-2);
}

.page-about .about-flow__fig img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-step {
  display: flex;
  flex-direction: column;
  border: 2px solid rgba(155, 176, 174, 0.2);
  border-top: 3px solid var(--k-gold);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(18, 60, 63, 0.94), rgba(6, 40, 43, 0.94));
  box-shadow: var(--shadow-1);
  overflow: hidden;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-about .about-step:hover {
  border-color: rgba(231, 178, 74, 0.55);
  transform: translateY(-2px);
}

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

.page-about .about-step__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 14px 14px 8px;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.page-about .about-step__trigger:focus-visible {
  outline: 2px solid var(--k-spark);
  outline-offset: -2px;
}

.page-about .about-step__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.35rem;
  line-height: 1;
  color: var(--k-gold);
}

.page-about .about-step__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: 0.01em;
  color: #ffffff;
}

.page-about .about-step__icon {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
  color: var(--k-gold-hi);
}

.page-about .about-step__icon::before,
.page-about .about-step__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.page-about .about-step__icon::before {
  width: 14px;
  height: 2px;
}

.page-about .about-step__icon::after {
  width: 2px;
  height: 14px;
}

.page-about .about-step__trigger[aria-expanded="true"] .about-step__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-about .about-step__lead {
  margin: 0;
  padding: 0 14px 16px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(232, 241, 239, 0.72);
}

.page-about .about-step__panel {
  margin: 0 14px 14px;
  padding: 12px 0 0;
  border-top: 1px dashed rgba(155, 176, 174, 0.3);
  font-size: 0.8125rem;
  line-height: 1.72;
  color: rgba(232, 241, 239, 0.86);
}

.page-about .about-step__panel p {
  margin: 0 0 8px;
}

.page-about .about-step__panel p:last-child {
  margin-bottom: 0;
}

.page-about .about-step__k {
  display: inline-block;
  min-width: 3.2em;
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--k-spark);
}

/* ---------- 团队数据 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(20px, 3vw, 30px) 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(16px, 2.4vw, 24px);
  background: rgba(6, 40, 43, 0.75);
}

.page-about .about-stat__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--k-ash);
}

.page-about .about-stat__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2rem, 4.6vw, 3rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--k-gold);
}

.page-about .about-stat__unit {
  margin-left: 4px;
  font-size: 0.42em;
  letter-spacing: 0.04em;
  color: var(--k-gold-hi);
}

.page-about .about-stat__cond {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: rgba(155, 176, 174, 0.95);
}

/* ---------- 服务标准深色面板 ---------- */
.page-about .about-standard {
  margin: clamp(22px, 3vw, 32px) 0;
  padding: clamp(20px, 3vw, 32px);
  border: 2px solid rgba(231, 178, 74, 0.32);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 140% at 8% 0%, rgba(55, 214, 192, 0.14), transparent 58%),
    linear-gradient(160deg, #041214 0%, #06282b 62%, #123c3f 100%);
  box-shadow: var(--shadow-2);
}

.page-about .about-standard__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 26px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-standard__item {
  padding-left: 16px;
  border-left: 2px solid var(--k-gold);
}

.page-about .about-standard__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--k-gold-hi);
}

.page-about .about-standard__unit {
  margin-left: 4px;
  font-size: 0.44em;
  color: var(--k-silver);
  opacity: 0.85;
}

.page-about .about-standard__label {
  display: block;
  margin-top: 6px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: #ffffff;
}

.page-about .about-standard__cond {
  margin: 6px 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: rgba(232, 241, 239, 0.72);
}

/* ---------- 水平年表 ---------- */
.page-about .about-timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__item {
  position: relative;
  margin-left: 6px;
  padding: 0 0 22px 26px;
  border-left: 1px solid rgba(231, 178, 74, 0.38);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--k-deep);
  border: 2px solid var(--k-gold);
  box-shadow: 0 0 0 4px rgba(231, 178, 74, 0.12);
  transition: background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

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

.page-about .about-timeline__item:hover::before {
  background: var(--k-gold-hi);
  box-shadow: 0 0 0 7px rgba(231, 178, 74, 0.22);
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--k-gold);
}

.page-about .about-timeline__title {
  margin: 4px 0 6px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.0625rem;
  color: #ffffff;
}

.page-about .about-timeline__note {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(232, 241, 239, 0.75);
}

/* ---------- 收尾 ---------- */
.page-about .about-outro {
  margin-top: clamp(48px, 7vw, 88px);
  padding: clamp(26px, 4vw, 44px);
  border: 1px solid rgba(231, 178, 74, 0.3);
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, rgba(18, 60, 63, 0.72), rgba(4, 18, 20, 0.92));
  box-shadow: var(--shadow-2);
}

.page-about .about-outro__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1.25;
  color: #ffffff;
}

.page-about .about-outro p {
  max-width: 62ch;
  margin: 0 0 22px;
  color: rgba(232, 241, 239, 0.84);
}

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

.page-about .about-outro__link {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid rgba(231, 178, 74, 0.45);
  border-radius: var(--r-pill);
  color: var(--k-gold-hi);
  font-size: 0.875rem;
  text-decoration: none;
  transition: background 0.22s var(--ease), color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-about .about-outro__link:hover {
  background: var(--k-gold);
  border-color: var(--k-gold);
  color: var(--k-ink);
}

.page-about .about-outro__link--solid {
  background: var(--k-gold);
  border-color: var(--k-gold);
  color: var(--k-ink);
  font-weight: 700;
}

.page-about .about-outro__link--solid:hover {
  background: var(--k-gold-hi);
  border-color: var(--k-gold-hi);
}

/* ---------- 响应式 ---------- */
@media (min-width: 680px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-about .about-cover__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 780px) {
  .page-about .about-steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    align-items: stretch;
    gap: 10px;
  }
}

@media (min-width: 880px) {
  .page-about .about-chapter__inner {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: clamp(20px, 3vw, 40px);
  }

  .page-about .about-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(18px, 2.4vw, 30px);
  }

  .page-about .about-timeline__item {
    margin-left: 0;
    padding: 26px 0 0;
    border-left: 0;
    border-top: 1px solid rgba(231, 178, 74, 0.38);
  }

  .page-about .about-timeline__item::before {
    left: 0;
    top: -7px;
  }
}

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

@media (min-width: 1080px) {
  .page-about .about-standard__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}