.page-about {
  --about-accent: #B8FF3B;
  --about-orange: #FF6B35;
  --about-wine-gradient: linear-gradient(135deg, rgba(122, 46, 61, 0.4) 0%, rgba(11, 29, 58, 0) 65%);
  background: var(--deep-blue);
  color: var(--bright-white);
  overflow-x: hidden;
}

.page-about .breadcrumbs {
  padding-top: calc(var(--header-h) + 32px);
  padding-bottom: 0;
  position: relative;
  z-index: 2;
}

/* ===== 品牌基石 ===== */
.page-about .about-hero {
  position: relative;
  padding: 56px 0 80px;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  top: 60px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(184, 255, 59, 0.07) 0%, transparent 70%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

.page-about .about-hero__eyebrow {
  font-family: var(--font-body);
  font-size: 0.875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist-blue);
  margin-bottom: 16px;
}

.page-about .about-hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  line-height: 1.08;
  letter-spacing: 1px;
  margin-bottom: 24px;
}

.page-about .about-hero__emphasis {
  font-style: normal;
  color: var(--about-accent);
  position: relative;
}

.page-about .about-hero__emphasis::after {
  content: "";
  display: block;
  width: 100%;
  height: 6px;
  background: var(--about-orange);
  transform: skewX(-20deg);
  margin-top: 2px;
}

.page-about .about-hero__lead {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--mist-blue);
  max-width: 34em;
  margin-bottom: 32px;
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 40px;
  padding: 24px 0;
  border-top: 1px solid var(--line-blue);
  border-bottom: 1px solid var(--line-blue);
  margin-bottom: 24px;
}

.page-about .about-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-hero__fact .data-num {
  font-family: var(--font-data);
  font-size: 2rem;
  color: var(--about-accent);
  line-height: 1.1;
}

.page-about .about-hero__fact-label {
  font-size: 0.8125rem;
  color: var(--mist-blue);
}

.page-about .about-hero__note {
  font-size: 0.875rem;
  color: var(--mist-blue);
}

.page-about .about-hero__visual {
  position: relative;
}

.page-about .about-hero__visual::before {
  content: "";
  position: absolute;
  inset: -16px -16px auto auto;
  width: 66%;
  height: 66%;
  background: var(--about-wine-gradient);
  border-radius: var(--radius);
  z-index: 0;
}

.page-about .about-hero__visual::after {
  content: "";
  position: absolute;
  left: -12px;
  bottom: -12px;
  width: 60%;
  height: 60%;
  border: 1px solid var(--sapphire-blue);
  border-radius: var(--radius);
  z-index: 0;
}

.page-about .about-hero__img {
  position: relative;
  z-index: 1;
  border: 1px solid var(--line-blue);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

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

/* ===== 发展里程碑 ===== */
.page-about .about-milestones {
  padding: 80px 0 88px;
  background: linear-gradient(180deg, var(--deep-blue) 0%, var(--abyss-blue) 100%);
}

.page-about .about-milestones__heading {
  margin-bottom: 44px;
}

.page-about .about-milestones__desc {
  color: var(--mist-blue);
  max-width: 36em;
  margin-top: 8px;
}

.page-about .about-timeline {
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 2px;
  background: linear-gradient(180deg, var(--neon-green) 0%, var(--sapphire-blue) 100%);
  opacity: 0.55;
}

.page-about .about-timeline__img {
  margin-bottom: 40px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-blue);
}

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

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 56px;
  display: grid;
  gap: 8px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 14px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--about-orange);
  border: 3px solid var(--deep-blue);
  box-shadow: 0 0 0 2px var(--about-orange);
}

.page-about .about-timeline__year {
  position: absolute;
  left: 0;
  top: -6px;
  width: 48px;
  font-family: var(--font-data);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--about-accent);
  text-align: right;
  padding-right: 10px;
}

.page-about .about-timeline__detail {
  background: rgba(15, 43, 82, 0.5);
  border: 1px solid var(--line-blue);
  border-radius: var(--radius);
}

.page-about .about-timeline__detail summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 20px;
  font-weight: 600;
  font-size: 1rem;
  color: var(--bright-white);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

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

.page-about .about-timeline__detail summary::after {
  content: "+";
  font-size: 1.5rem;
  line-height: 1;
  color: var(--about-orange);
  transition: transform 0.35s var(--ease-out);
  flex-shrink: 0;
}

.page-about .about-timeline__detail[open] summary::after {
  transform: rotate(45deg);
}

.page-about .about-timeline__detail p {
  padding: 0 20px 16px;
  margin: 0;
  color: var(--mist-blue);
  font-size: 0.9375rem;
  line-height: 1.75;
}

/* ===== 团队与组织 ===== */
.page-about .about-team {
  position: relative;
  padding: 88px 0 80px;
  background: var(--abyss-blue);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
  margin-top: 40px;
}

.page-about .about-team__chart {
  display: flex;
  justify-content: center;
}

.page-about .about-team__chart svg {
  width: 100%;
  max-width: 340px;
  height: auto;
  display: block;
}

.page-about .about-team__chart .radar-grid {
  fill: none;
  stroke: var(--line-blue);
  stroke-width: 1;
}

.page-about .about-team__chart .radar-data {
  fill: rgba(184, 255, 59, 0.15);
  stroke: var(--neon-green);
  stroke-width: 2;
  filter: drop-shadow(0 0 6px rgba(184, 255, 59, 0.35));
}

.page-about .about-team__chart .radar-dot {
  fill: var(--vibrant-orange);
}

.page-about .about-team__chart .radar-label {
  font-size: 12px;
  fill: var(--mist-blue);
  font-family: var(--font-body);
  font-weight: 500;
}

.page-about .about-team__right {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.page-about .about-team__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.page-about .about-team__card {
  background: rgba(28, 78, 138, 0.18);
  border: 1px solid var(--line-blue);
  border-radius: var(--radius);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: transform 0.3s var(--ease-out), background-color 0.3s var(--ease-out);
}

.page-about .about-team__card .data-num {
  font-family: var(--font-data);
  font-size: 1.75rem;
  color: var(--about-accent);
  line-height: 1.1;
}

.page-about .about-team__card-label {
  font-size: 0.875rem;
  color: var(--bright-white);
}

.page-about .about-team__card:hover {
  transform: translateY(-2px);
  background: rgba(28, 78, 138, 0.32);
}

.page-about .about-team__note {
  font-size: 0.875rem;
  color: var(--mist-blue);
  margin: 0;
}

.page-about .about-team__desc {
  max-width: 46em;
  color: var(--mist-blue);
  line-height: 1.85;
  margin: 48px auto 0;
  text-align: center;
}

.page-about .about-team__img {
  margin-top: 40px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-blue);
}

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

/* ===== 资质与安全 ===== */
.page-about .about-credential {
  position: relative;
  padding: 88px 0 96px;
  background: linear-gradient(rgba(28, 78, 138, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(28, 78, 138, 0.12) 1px, transparent 1px),
    var(--deep-blue);
  background-size: 32px 32px;
}

.page-about .about-credential__desc {
  color: var(--mist-blue);
  max-width: 38em;
  margin-top: 8px;
}

.page-about .about-credential__matrix {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 40px;
}

.page-about .about-credential__item {
  background: rgba(15, 43, 82, 0.72);
  border: 1px solid var(--line-blue);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  transition: transform 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.page-about .about-credential__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  width: 40px;
  height: 2px;
  background: var(--about-orange);
}

.page-about .about-credential__item:hover {
  transform: translateY(-2px);
  border-color: var(--sapphire-blue);
}

.page-about .about-credential__icon {
  display: inline-flex;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(184, 255, 59, 0.08);
  border: 1px solid rgba(184, 255, 59, 0.25);
  align-items: center;
  justify-content: center;
  margin-bottom: 4px;
}

.page-about .about-credential__item h3 {
  font-size: 1.125rem;
  color: var(--bright-white);
  margin: 0;
}

.page-about .about-credential__item p {
  color: var(--mist-blue);
  font-size: 0.9375rem;
  line-height: 1.75;
  margin: 0;
}

/* ===== 合作生态 ===== */
.page-about .about-partner {
  position: relative;
  padding: 88px 0 80px;
}

.page-about .about-partner__desc {
  color: var(--mist-blue);
  max-width: 38em;
  margin-top: 8px;
}

.page-about .about-partner__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 40px;
}

.page-about .about-partner__card {
  background: rgba(11, 29, 58, 0.32);
  border: 1px solid rgba(58, 90, 127, 0.6);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.page-about .about-partner__card:hover {
  transform: translateY(-2px);
  border-color: rgba(184, 255, 59, 0.5);
}

.page-about .about-partner__num {
  font-family: var(--font-data);
  font-size: 2rem;
  color: var(--about-accent);
  line-height: 1;
}

.page-about .about-partner__card h3 {
  color: var(--bright-white);
  font-size: 1.125rem;
  margin: 0;
}

.page-about .about-partner__card p {
  color: var(--mist-blue);
  font-size: 0.9375rem;
  line-height: 1.75;
  margin: 0;
}

.page-about .about-partner__note {
  margin-top: 32px;
  color: var(--mist-blue);
  font-size: 0.875rem;
}

.page-about .about-partner__note a {
  color: var(--about-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== CTA ===== */
.page-about .about-cta {
  padding: 72px 0 88px;
}

.page-about .about-cta__inner {
  text-align: center;
  max-width: 720px;
}

.page-about .about-cta__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 16px;
}

.page-about .about-cta__text {
  color: var(--mist-blue);
  margin-bottom: 32px;
  line-height: 1.75;
}

.page-about .about-cta__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* ===== 桌面端 ===== */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 72px 0 96px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
  }

  .page-about .about-hero__title {
    margin-bottom: 28px;
  }

  .page-about .about-hero__facts {
    gap: 16px 56px;
  }

  .page-about .about-milestones {
    padding: 96px 0 104px;
  }

  .page-about .about-milestones__heading {
    margin-bottom: 56px;
  }

  .page-about .about-timeline::before {
    left: 88px;
  }

  .page-about .about-timeline__item {
    padding-left: 124px;
  }

  .page-about .about-timeline__item::before {
    left: 82px;
    top: 16px;
  }

  .page-about .about-timeline__year {
    left: 0;
    top: -10px;
    width: 80px;
    font-size: 3rem;
    text-align: right;
    padding-right: 8px;
  }

  .page-about .about-timeline__detail summary {
    padding: 18px 24px;
    font-size: 1.0625rem;
  }

  .page-about .about-timeline__detail p {
    padding: 0 24px 20px;
    font-size: 1rem;
  }

  .page-about .about-team {
    padding: 100px 0 96px;
  }

  .page-about .about-team__grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 56px;
    margin-top: 48px;
  }

  .page-about .about-team__cards {
    gap: 16px;
  }

  .page-about .about-team__card {
    padding: 22px 20px;
  }

  .page-about .about-team__desc {
    margin-top: 56px;
  }

  .page-about .about-team__img {
    margin-top: 48px;
  }

  .page-about .about-team__img img {
    height: 320px;
    object-fit: cover;
  }

  .page-about .about-credential {
    padding: 100px 0 104px;
  }

  .page-about .about-credential__matrix {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 48px;
  }

  .page-about .about-credential__item {
    padding: 32px 24px;
  }

  .page-about .about-partner {
    padding: 100px 0 88px;
  }

  .page-about .about-partner__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
  }

  .page-about .about-partner__card {
    padding: 36px 28px;
  }

  .page-about .about-cta {
    padding: 88px 0 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__visual::before,
  .page-about .about-hero__visual::after {
    transition: none;
  }

  .page-about .about-team__card,
  .page-about .about-credential__item,
  .page-about .about-partner__card {
    transition: none;
  }
}