/* ===================== page-about ===================== */
.page-about {
  --about-block: clamp(46px, 6.5vw, 84px);
  --about-radius: var(--r-md);
  display: block;
  color: var(--mist);
  background:
    radial-gradient(1100px 560px at 86% -10%, rgba(212, 175, 55, .12), transparent 62%),
    radial-gradient(880px 500px at -10% 26%, rgba(255, 107, 74, .09), transparent 60%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
  overflow-x: hidden;
}

.page-about .about-top {
  padding-top: clamp(18px, 3vw, 30px);
}

.page-about .about-crumbs {
  margin-bottom: clamp(14px, 2.6vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(6px, 1.4vw, 14px) 0 clamp(34px, 5vw, 60px);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 7.4vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--gold);
}

.page-about .about-hero__lead {
  margin: clamp(18px, 3vw, 28px) 0 0;
  max-width: 62ch;
  font-family: var(--font-body);
  font-size: clamp(.95rem, 1.5vw, 1.06rem);
  line-height: 1.85;
  color: var(--steel);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  background: var(--line);
  overflow: hidden;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(14px, 2.4vw, 22px) clamp(14px, 2.4vw, 22px);
  background: rgba(9, 26, 52, .82);
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  line-height: 1;
  color: var(--gold);
  letter-spacing: -.01em;
}

.page-about .about-stat__num small {
  font-size: .55em;
  margin-left: 2px;
  color: var(--gold-warm);
}

.page-about .about-stat__label {
  font-size: .78rem;
  line-height: 1.5;
  letter-spacing: .04em;
  color: var(--steel);
}

.page-about .about-anchor {
  margin-top: clamp(26px, 4vw, 40px);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: .82rem;
}

/* ---------- 通用区块 ---------- */
.page-about .about-block {
  padding: var(--about-block) 0;
}

.page-about .about-block--alt {
  background: linear-gradient(180deg, rgba(27, 42, 68, .55), rgba(6, 20, 40, .25));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-block__head {
  max-width: 76ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .about-block__head .section-title {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.4vw, 2.1rem);
  line-height: 1.32;
  letter-spacing: .01em;
  color: var(--white);
}

.page-about .about-block__head .section-note {
  margin: 14px 0 0;
  font-size: .95rem;
  line-height: 1.9;
  color: var(--steel);
}

.page-about .about-sub {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .04em;
  color: var(--gold-warm);
}

/* ---------- 定位：左右分栏 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 38px);
  align-items: start;
}

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

.page-about .about-deflist > li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: clamp(16px, 2.6vw, 24px);
  background: rgba(10, 30, 60, .72);
  transition: background .25s ease;
}

.page-about .about-deflist > li:hover {
  background: var(--ink-card);
}

.page-about .about-deflist__key {
  font-size: .82rem;
  font-weight: 700;
  color: var(--coral);
  letter-spacing: .08em;
  padding-top: 3px;
}

.page-about .about-deflist__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: .03em;
  color: var(--white);
}

.page-about .about-deflist__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--steel);
}

.page-about .about-split__aside {
  padding: clamp(20px, 3vw, 28px);
}

.page-about .about-aside__text {
  margin: 12px 0 0;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--steel);
}

.page-about .about-link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-cover {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
  align-items: start;
}

.page-about .about-cover__figure {
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: var(--about-radius);
  background: rgba(140, 163, 184, .08);
  padding: clamp(10px, 1.6vw, 16px);
}

.page-about .about-cover__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-sm);
  object-fit: cover;
}

.page-about .about-cover__figure figcaption {
  margin-top: 10px;
  font-size: .75rem;
  line-height: 1.6;
}

.page-about .about-cover__list {
  display: grid;
  gap: 14px;
}

.page-about .about-refresh {
  position: relative;
  padding: 16px 18px 16px 22px;
  border-radius: var(--about-radius);
  background: rgba(140, 163, 184, .10);
  border-left: 3px solid var(--gold);
}

.page-about .about-refresh__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .98rem;
  letter-spacing: .03em;
  color: var(--white);
}

.page-about .about-refresh__cycle {
  display: inline-block;
  margin: 8px 0 0;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--ink-deep);
  background: var(--gold-warm);
}

.page-about .about-refresh__desc {
  margin: 10px 0 0;
  font-size: .87rem;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-cover__foot {
  margin: 4px 0 0;
  padding: 14px 18px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--about-radius);
  font-size: .85rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 发展历程 ---------- */
.page-about .about-timeline-figure {
  margin: 0 0 clamp(24px, 3.6vw, 38px);
  border-radius: var(--about-radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: rgba(6, 20, 40, .7);
}

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

.page-about .about-timeline-figure figcaption {
  padding: 12px clamp(14px, 2vw, 20px);
  font-size: .75rem;
  line-height: 1.6;
  border-top: 1px solid var(--line);
}

.page-about .about-tabs .tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-tabs .tab {
  appearance: none;
  cursor: pointer;
  padding: 9px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--steel);
  font-family: var(--font-mono);
  font-size: .86rem;
  letter-spacing: .06em;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.page-about .about-tabs .tab:hover {
  color: var(--white);
  border-color: var(--line-gold);
}

.page-about .about-tabs .tab[aria-selected="true"] {
  color: var(--ink-deep);
  background: var(--gold);
  border-color: var(--gold);
  font-weight: 700;
}

.page-about .about-panel {
  padding: clamp(18px, 3vw, 28px) clamp(18px, 3vw, 30px);
  border-left: 3px solid var(--coral);
  border-radius: 0 var(--about-radius) var(--about-radius) 0;
  background: linear-gradient(90deg, rgba(255, 107, 74, .10), rgba(10, 30, 60, .35) 45%, rgba(10, 30, 60, .12));
}

.page-about .about-panel[hidden] {
  display: none;
}

.page-about .about-panel__year {
  margin: 0;
  font-size: .86rem;
  letter-spacing: .14em;
  color: var(--coral);
}

.page-about .about-panel__title {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.6vw, 1.35rem);
  line-height: 1.45;
  color: var(--white);
}

.page-about .about-panel__text {
  margin: 12px 0 0;
  max-width: 66ch;
  font-size: .92rem;
  line-height: 1.9;
  color: var(--steel);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-team__card {
  padding: clamp(20px, 3vw, 28px);
  border-top: 3px solid var(--gold);
}

.page-about .about-team__num {
  margin: 0;
  font-size: clamp(2rem, 5.4vw, 2.8rem);
  font-weight: 700;
  line-height: 1;
  color: var(--mist);
  letter-spacing: -.02em;
}

.page-about .about-team__card .card-title {
  margin: 12px 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-about .about-team__text {
  margin: 0;
  font-size: .88rem;
  line-height: 1.85;
  color: var(--steel);
}

.page-about .about-partners {
  margin-top: clamp(20px, 3vw, 30px);
  padding: clamp(20px, 3vw, 30px);
}

.page-about .about-partners p {
  margin: 10px 0 0;
  font-size: .9rem;
  line-height: 1.9;
  color: var(--steel);
}

/* ---------- 口碑 ---------- */
.page-about .about-trust {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
}

.page-about .about-trust__points {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .about-point {
  padding: clamp(16px, 2.6vw, 24px);
  background: rgba(10, 30, 60, .72);
}

.page-about .about-point__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .98rem;
  letter-spacing: .03em;
  color: var(--gold-warm);
}

.page-about .about-point__text {
  margin: 0;
  font-size: .89rem;
  line-height: 1.85;
  color: var(--steel);
}

.page-about .about-quote {
  padding: clamp(22px, 3.4vw, 34px);
  border-radius: var(--about-radius);
  background:
    linear-gradient(150deg, rgba(212, 175, 55, .16), rgba(9, 26, 52, .9) 55%),
    var(--ink-card);
  border: 1px solid var(--line-gold);
}

.page-about .about-quote__figure {
  margin: 0;
  font-size: clamp(2.2rem, 6vw, 3.2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  letter-spacing: -.02em;
}

.page-about .about-quote__label {
  margin: 10px 0 0;
  font-size: .82rem;
  line-height: 1.6;
  color: var(--gold-warm);
}

.page-about .about-quote__text {
  margin: 16px 0 0;
  font-size: .9rem;
  line-height: 1.9;
  color: var(--mist);
}

.page-about .about-cta-row {
  display: grid;
  gap: 16px;
  margin-top: clamp(28px, 4vw, 46px);
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--about-radius);
  border: 1px solid var(--line);
  background: rgba(140, 163, 184, .08);
}

.page-about .about-cta-row__text {
  margin: 0;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-cta-row .about-link-row {
  margin-top: 0;
}

/* ---------- 底部海岸线 ---------- */
.page-about .about-coastline {
  margin: 0;
  padding: 0;
  line-height: 0;
  position: relative;
}

.page-about .about-coastline::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--ink-deep) 0%, rgba(6, 20, 40, .1) 45%, rgba(6, 20, 40, .85) 100%);
  pointer-events: none;
  z-index: 1;
}

.page-about .about-coastline img {
  display: block;
  width: 100%;
  height: clamp(140px, 22vw, 260px);
  object-fit: cover;
  opacity: .34;
  filter: saturate(.7);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-cta-row {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

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

@media (min-width: 960px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr);
  }

  .page-about .about-cover {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  }

  .page-about .about-trust {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-deflist > li,
  .page-about .about-tabs .tab {
    transition: none;
  }
}