.page-about {
  --about-line: rgba(255, 255, 255, 0.14);
  --about-line-weak: rgba(255, 255, 255, 0.06);
  --about-gold: #E5A83A;
  --about-orange: #FF6B2C;
  background: var(--color-deep);
  color: var(--color-paper);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: clip;
}

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

.page-about .breadcrumbs {
  padding-top: 1.5rem;
  font-family: var(--font-mono);
}

.page-about .display-title {
  margin: 0;
}

/* ---------- 01 品牌叙事 ---------- */
.page-about .about-intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 3rem;
}

.page-about .about-intro__rail {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-self: start;
  border-top: 2px solid var(--about-orange);
  border-bottom: 1px solid var(--about-line);
  padding: 1.5rem 0;
}

.page-about .about-intro__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--about-orange);
}

.page-about .about-intro__rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.page-about .about-intro__rail-list div {
  border-left: 1px solid var(--about-line);
  padding-left: 0.75rem;
}

.page-about .about-intro__rail-list dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-slate);
}

.page-about .about-intro__rail-list dd {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  color: var(--color-mist);
}

.page-about .about-intro__rule {
  height: 1px;
  width: 100%;
  background: var(--about-line);
}

.page-about .about-intro__rail-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--color-slate);
}

.page-about .about-intro__main {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.page-about .about-intro__lead {
  margin: 0;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  line-height: 1.65;
  color: var(--color-mist);
  border-left: 3px solid var(--about-gold);
  padding-left: 1.25rem;
}

.page-about .about-intro__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-about .about-intro__grid p {
  margin: 0;
}

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

/* ---------- 通用视觉块 ---------- */
.page-about .about-visual {
  margin: 0;
  border: 1px solid var(--about-line);
  background: rgba(255, 255, 255, 0.02);
}

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

.page-about .about-visual__note {
  margin: 0;
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--color-slate);
  border-top: 1px solid var(--about-line);
}

/* ---------- 02 关键里程碑 ---------- */
.page-about .about-milestones {
  background: var(--color-indigo);
  padding: clamp(3rem, 7vw, 5rem) 0;
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-milestones .section-head {
  margin-bottom: 2rem;
}

.page-about .about-milestones__meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
  margin-bottom: 2.5rem;
}

.page-about .about-milestones__meta p {
  margin: 0;
  max-width: 60ch;
  color: var(--color-mist);
}

.page-about .about-milestones__metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
}

.page-about .about-milestones__metrics span {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-slate);
  letter-spacing: 0.05em;
}

.page-about .about-milestones__metrics strong {
  display: block;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--about-gold);
  line-height: 1.1;
}

.page-about .about-milestones__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  border-left: 1px solid var(--line-strong);
  padding-left: 2rem;
}

.page-about .about-node {
  position: relative;
  padding: 1.75rem 0;
}

.page-about .about-node:first-child {
  padding-top: 0.25rem;
}

.page-about .about-node:last-child {
  padding-bottom: 0.25rem;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 2.25rem;
  width: 10px;
  height: 10px;
  transform: translateX(-50%) rotate(45deg);
  background: var(--color-indigo);
  border: 2px solid var(--about-gold);
  box-sizing: border-box;
  transition: background 240ms var(--ease), box-shadow 240ms var(--ease);
}

.page-about .about-node:hover::before {
  background: var(--about-gold);
  box-shadow: 0 0 0 5px rgba(229, 168, 58, 0.18);
}

.page-about .about-node__meta {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-family: var(--font-mono);
  margin-bottom: 0.75rem;
}

.page-about .about-node__num {
  font-size: 0.78rem;
  color: var(--color-slate);
}

.page-about .about-node__date {
  font-size: 1rem;
  font-weight: 600;
  color: var(--about-gold);
}

.page-about .about-node__badge {
  font-size: 0.72rem;
  color: var(--color-indigo);
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 0.2rem 0.5rem;
  letter-spacing: 0.06em;
  transition: color 240ms var(--ease), background 240ms var(--ease);
}

.page-about .about-node:hover .about-node__badge {
  color: var(--about-gold);
  background: rgba(229, 168, 58, 0.08);
}

.page-about .about-node__body h3 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-paper);
}

.page-about .about-node__body p {
  margin: 0;
  color: var(--color-mist);
  max-width: 52ch;
}

.page-about .about-milestones__aside {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-about .about-milestones__note {
  margin: 0;
  padding: 1rem 1.25rem;
  border-left: 2px solid var(--about-gold);
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.9rem;
  color: var(--color-mist);
}

/* ---------- 03 会员权益承诺 ---------- */
.page-about .about-benefits {
  background: var(--color-teal);
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.page-about .about-benefits__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.page-about .about-benefits__rail {
  border-top: 2px solid var(--about-gold);
  border-bottom: 1px solid var(--about-line);
  padding: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-about .about-benefits__rail-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--about-orange);
}

.page-about .about-benefits__rail-note {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-mist);
}

.page-about .about-benefits__main {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.page-about .about-benefits__head h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  line-height: 1.2;
}

.page-about .about-benefits__head-note {
  margin: 0;
  color: var(--color-mist);
  max-width: 60ch;
}

.page-about .about-benefits__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-stat {
  background: rgba(10, 17, 40, 0.22);
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 800;
  color: var(--about-gold);
  line-height: 1.1;
}

.page-about .about-stat__label {
  font-size: 0.75rem;
  color: var(--color-mist);
  letter-spacing: 0.04em;
}

.page-about .about-visual--benefits {
  margin: 0;
}

/* ---------- 权益折叠面板 ---------- */
.page-about .about-benefits__cards {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.page-about .about-card {
  border: 1px solid var(--about-line);
  background: rgba(10, 17, 40, 0.3);
}

.page-about .about-card__summary {
  list-style: none;
  cursor: pointer;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  user-select: none;
  color: var(--color-paper);
  transition: background 240ms var(--ease);
}

.page-about .about-card__summary::-webkit-details-marker {
  display: none;
}

.page-about .about-card__summary:hover {
  background: rgba(255, 255, 255, 0.05);
}

.page-about .about-card__index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-slate);
  min-width: 2.5rem;
}

.page-about .about-card__title {
  flex: 1;
  font-weight: 700;
  font-size: 1.05rem;
}

.page-about .about-card__tag {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--about-line);
}

.page-about .about-card__tag--gold {
  color: var(--about-gold);
  border-color: rgba(229, 168, 58, 0.45);
}

.page-about .about-card__tag--orange {
  color: var(--about-orange);
  border-color: rgba(255, 107, 44, 0.45);
}

.page-about .about-card__tag--green {
  color: var(--color-green);
  border-color: rgba(60, 214, 138, 0.4);
}

.page-about .about-card__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 240ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.page-about .about-card[open] .about-card__body {
  grid-template-rows: 1fr;
}

.page-about .about-card__list {
  min-height: 0;
  overflow: hidden;
  margin: 0;
  padding: 0 1.25rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity 240ms ease, padding 240ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.page-about .about-card[open] .about-card__list {
  opacity: 1;
  padding: 0 1.25rem 1.25rem 0;
}

.page-about .about-card__list li {
  list-style: none;
  position: relative;
  padding-left: 1.25rem;
  color: var(--color-mist);
}

.page-about .about-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  background: var(--about-gold);
  transform: rotate(45deg);
}

/* ---------- 酒红斜切条 ---------- */
.page-about .about-wine-bar {
  height: 42px;
  background: var(--color-wine);
  clip-path: polygon(0 0, calc(100% - 90px) 0, 100% 100%, 0 100%);
}

/* ---------- 04 团队与运营 ---------- */
.page-about .about-team {
  background: var(--color-ink);
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.page-about .about-team .section-head {
  margin-bottom: 2rem;
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-team__item {
  background: var(--color-ink);
  padding: 1.75rem 1.5rem;
  margin: 0;
}

.page-about .about-team__code {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--about-orange);
  margin-bottom: 0.75rem;
}

.page-about .about-team__item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
}

.page-about .about-team__item p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-mist);
}

.page-about .about-team__note {
  margin: 2.5rem 0 0;
  padding: 1rem 1.25rem;
  border-left: 2px solid var(--about-orange);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-mist);
  font-size: 0.9rem;
  max-width: 72ch;
}

.page-about .about-team__note-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--about-orange);
  letter-spacing: 0.06em;
  margin-bottom: 0.35rem;
}

/* ---------- 05 访问路径 ---------- */
.page-about .about-path {
  background: var(--color-deep);
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.page-about .about-path .section-head {
  margin-bottom: 2rem;
}

.page-about .about-path__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-path__item {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-height: 160px;
  padding: 1.5rem 1.25rem;
  background: var(--color-deep);
  color: var(--color-paper);
  text-decoration: none;
  transition: background 240ms var(--ease), border-color 240ms var(--ease);
}

.page-about .about-path__item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.page-about .about-path__code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--about-gold);
  letter-spacing: 0.08em;
}

.page-about .about-path__title {
  font-size: 1.15rem;
  font-weight: 800;
}

.page-about .about-path__desc {
  font-size: 0.85rem;
  color: var(--color-mist);
  line-height: 1.6;
}

.page-about .about-path__closing {
  margin: 2.5rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-slate);
  letter-spacing: 0.04em;
}

/* ---------- 桌面布局增强 ---------- */
@media (min-width: 768px) {
  .page-about .breadcrumbs {
    padding-top: 2rem;
  }

  .page-about .about-intro {
    grid-template-columns: 3fr 9fr;
    gap: 3rem 4rem;
  }

  .page-about .about-intro__rail {
    position: sticky;
    top: calc(var(--header-h) + 1rem);
  }

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

  .page-about .about-milestones__meta {
    grid-template-columns: 1fr 1fr;
    align-items: end;
  }

  .page-about .about-milestones__layout {
    grid-template-columns: 7fr 5fr;
    gap: 4rem;
  }

  .page-about .about-node {
    display: grid;
    grid-template-columns: 200px 1fr;
    column-gap: 2.5rem;
  }

  .page-about .about-node__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
    margin-bottom: 0;
  }

  .page-about .about-node::before {
    top: 2rem;
  }

  .page-about .about-benefits__layout {
    grid-template-columns: 3fr 9fr;
    gap: 3rem 4rem;
  }

  .page-about .about-benefits__rail {
    position: sticky;
    top: calc(var(--header-h) + 1rem);
  }

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

@media (min-width: 1024px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-path__grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-about .about-path__item {
    min-height: 180px;
  }
}

/* ---------- 减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
    animation: none !important;
  }
}