.page-about {
  --about-page-gap: 72px;
}

/* ========== Hero 首屏 ========== */
.page-about .about-hero {
  position: relative;
  padding: 44px 0 56px;
  overflow: hidden;
  background:
    radial-gradient(circle at 84% 18%, rgba(231, 177, 10, 0.20), transparent 26%),
    radial-gradient(circle at 8% 92%, rgba(216, 51, 62, 0.10), transparent 30%),
    var(--color-bg);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -6%;
  top: 9%;
  width: 44%;
  height: 82%;
  background: linear-gradient(145deg, var(--color-secondary), var(--color-secondary-light));
  clip-path: polygon(18% 0, 100% 0, 100% 100%, 0 100%);
  opacity: 0.08;
  transform: rotate(1.2deg);
  z-index: 0;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-about .breadcrumb {
  position: relative;
  z-index: 1;
  margin-bottom: 32px;
}

.page-about .about-hero__lead {
  margin: 18px 0 26px;
  max-width: 560px;
  color: var(--color-text-secondary);
  line-height: 1.85;
}

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

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  padding: 14px 14px 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  transform: rotate(1.4deg);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.page-about .about-hero__figure figcaption {
  margin-top: 10px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-secondary);
}

.page-about .about-hero__monogram {
  position: absolute;
  right: -12px;
  top: -16px;
  z-index: 2;
  display: inline-block;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-primary);
  background: var(--color-surface);
  border: 2px solid var(--color-primary);
  border-radius: 10px;
  transform: rotate(5deg);
}

/* ========== 品牌缘起 ========== */
.page-about .about-origin {
  padding-top: var(--about-page-gap);
  padding-bottom: var(--about-page-gap);
}

.page-about .about-origin__layout {
  display: grid;
  gap: 24px;
}

.page-about .about-route-index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 14px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
}

.page-about .route-index__label {
  flex: 0 0 100%;
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  letter-spacing: 0.12em;
}

.page-about .route-index__item {
  font-size: var(--text-small);
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  text-decoration: none;
}

.page-about .route-index__item--gold {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text);
}

.page-about .route-index__item--blue {
  background: var(--color-secondary);
  border-color: var(--color-secondary);
  color: #fff;
}

.page-about .about-origin__content {
  display: grid;
  gap: 28px;
  align-items: start;
}

.page-about .about-origin__entry {
  position: relative;
  padding: 30px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.page-about .about-origin__entry::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  opacity: 0.10;
  transform: translate(6px, 7px);
  pointer-events: none;
}

.page-about .about-origin__entry p {
  position: relative;
  z-index: 1;
  margin: 0 0 16px;
  color: var(--color-text);
  line-height: 1.85;
}

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

.page-about .about-origin__aside {
  position: relative;
  padding: 30px;
  background: var(--color-secondary);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  color: #fff;
}

.page-about .about-origin__aside::before {
  content: "";
  position: absolute;
  top: -10px;
  right: -10px;
  width: 44px;
  height: 44px;
  background: var(--color-accent);
  border-radius: 10px;
  z-index: 0;
}

.page-about .about-origin__aside > * {
  position: relative;
  z-index: 1;
}

.page-about .about-origin__aside h3 {
  margin: 10px 0 12px;
  font-size: var(--text-h3);
  color: #fff;
}

.page-about .about-origin__aside p {
  margin: 0 0 22px;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.8;
}

.page-about .about-origin__index {
  font-family: var(--font-mono);
  font-size: var(--text-small);
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

/* ========== 里程碑时间线 ========== */
.page-about .about-milestones {
  padding-top: var(--about-page-gap);
  padding-bottom: var(--about-page-gap);
  background:
    linear-gradient(rgba(47, 59, 86, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 59, 86, 0.035) 1px, transparent 1px);
  background-size: 22px 22px;
  border-block: 1px solid var(--color-border);
}

.page-about .about-timeline {
  display: flex;
  gap: 18px;
  padding: 12px 4px 30px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-timeline__item {
  flex: 0 0 78%;
  max-width: 320px;
  scroll-snap-align: start;
}

.page-about .about-timeline__mark {
  display: inline-block;
  margin-bottom: 12px;
  padding: 7px 16px;
  background: var(--color-primary);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: var(--text-small);
  font-weight: 700;
  color: #fff;
}

.page-about .about-timeline__card {
  min-height: 150px;
  padding: 22px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.page-about .about-timeline__card h3 {
  margin: 0 0 10px;
  font-size: 1.125rem;
}

.page-about .about-timeline__card p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--text-small);
  line-height: 1.7;
}

.page-about .about-timeline__item:nth-child(even) .about-timeline__card {
  background: rgba(255, 255, 255, 0.72);
}

.page-about .about-timeline__item--current .about-timeline__mark {
  background: var(--color-accent);
  color: var(--color-text);
}

.page-about .about-timeline__item--current .about-timeline__card {
  border-color: var(--color-primary);
  box-shadow: 0 10px 24px rgba(216, 51, 62, 0.16);
}

/* ========== 团队与用户 ========== */
.page-about .about-team {
  padding-top: var(--about-page-gap);
  padding-bottom: var(--about-page-gap);
}

.page-about .about-team__grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .about-team__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.page-about .about-team__stat {
  padding: 22px 16px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-align: center;
}

.page-about .about-team__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-primary);
}

.page-about .about-team__label {
  display: block;
  margin-top: 8px;
  color: var(--color-text-secondary);
  font-size: var(--text-small);
}

.page-about .about-team__copy p {
  margin: 0 0 16px;
  line-height: 1.85;
}

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

.page-about .about-team__figure,
.page-about .about-team__chart {
  margin: 32px 0 0;
  padding: 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.page-about .about-team__figure img,
.page-about .about-team__chart img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

.page-about .about-team__figure figcaption,
.page-about .about-team__chart figcaption {
  padding: 12px 4px 4px;
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  text-align: center;
}

/* ========== 价值承诺 ========== */
.page-about .about-values {
  padding: 72px 0;
  background:
    radial-gradient(circle at 14% 85%, rgba(231, 177, 10, 0.14), transparent 26%),
    linear-gradient(150deg, var(--color-secondary) 0%, #202A3C 100%);
  color: #fff;
}

.page-about .about-values .section__kicker {
  color: var(--color-accent);
}

.page-about .about-values .section__title {
  color: #fff;
}

.page-about .about-values .section__desc {
  color: rgba(255, 255, 255, 0.72);
}

.page-about .about-values__grid {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

.page-about .about-values__item {
  padding: 26px 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  transition: background 0.3s ease, transform 0.3s ease;
}

.page-about .about-values__item:hover {
  background: rgba(255, 255, 255, 0.10);
  transform: translateY(-3px);
}

.page-about .about-values__index {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-small);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-accent);
}

.page-about .about-values__item h3 {
  margin: 10px 0 10px;
  font-size: var(--text-h3);
  color: #fff;
}

.page-about .about-values__item p {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: var(--text-small);
  line-height: 1.75;
}

.page-about .about-values__footer {
  display: grid;
  gap: 18px;
  align-items: center;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.80);
}

.page-about .about-values__footer p {
  margin: 0;
  line-height: 1.8;
}

.page-about .about-values__footer a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-values__footer .btn {
  justify-self: start;
  text-decoration: none;
}

/* ========== 响应式：平板 ========== */
@media (min-width: 700px) {
  .page-about .about-team__stats {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

/* ========== 响应式：桌面 ========== */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 56px 0 72px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
  }

  .page-about .about-origin__layout {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .about-route-index {
    display: grid;
    gap: 8px;
    margin: 0;
    position: sticky;
    top: 96px;
  }

  .page-about .about-origin__content {
    grid-template-columns: 1fr 0.8fr;
    gap: 32px;
  }

  .page-about .about-timeline {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 20px;
    overflow: visible;
    padding-top: 16px;
  }

  .page-about .about-timeline__item {
    flex: initial;
    max-width: none;
  }

  .page-about .about-timeline__item:nth-child(even) {
    transform: translateY(20px);
  }

  .page-about .about-team__grid {
    grid-template-columns: 0.95fr 1.05fr;
    gap: 44px;
  }
}