.page-about {
  --about-hero-bg: linear-gradient(135deg, #1A1A2E 0%, #1D3557 60%, #16213e 100%);
  --about-gold-light: rgba(244, 162, 97, 0.15);
  --about-gold-soft: rgba(244, 162, 97, 0.4);
  --about-red-soft: rgba(230, 57, 70, 0.08);
  --about-blue-soft: rgba(29, 53, 87, 0.06);
  --about-stat-bg: linear-gradient(145deg, #1A1A2E 0%, #1D3557 100%);
  color: var(--c-text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
}

/* ===== 首屏英雄区 ===== */
.page-about .about-hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: var(--about-hero-bg);
  overflow: hidden;
  padding: 6rem 0 4rem;
  margin-bottom: 0;
}

.page-about .about-hero__bg-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.25;
  mix-blend-mode: overlay;
}

.page-about .about-hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

.page-about .about-hero__kicker {
  display: inline-block;
  font-family: var(--font-heading-bold);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-accent-gold);
  background: var(--about-gold-light);
  padding: 0.3rem 1.2rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
  border: 1px solid var(--about-gold-soft);
}

.page-about .about-hero__title {
  font-family: var(--font-heading-bold);
  font-size: 3.2rem;
  line-height: 1.1;
  color: var(--c-text-light);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
  max-width: 10ch;
}

.page-about .about-hero__title-em {
  color: var(--c-primary-red);
  display: block;
  background: linear-gradient(135deg, var(--c-primary-red), #ff6b6b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-about .about-hero__subtitle {
  font-family: var(--font-body);
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  margin: 0.75rem 0 1.25rem;
  max-width: 40rem;
  line-height: 1.5;
  font-weight: 400;
}

.page-about .about-hero__divider {
  width: 4rem;
  height: 3px;
  background: var(--c-accent-gold);
  border-radius: 4px;
  margin: 1.25rem 0;
}

.page-about .about-hero__lead {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.7);
  max-width: 36rem;
  line-height: 1.7;
  margin: 0;
}

/* ===== 品牌叙事 ===== */
.page-about .about-narrative {
  background: var(--c-bg-light);
  padding: 4rem 0;
  position: relative;
}

.page-about .about-narrative::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c-primary-red), var(--c-accent-gold), var(--c-primary-blue));
}

.page-about .about-narrative__inner {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-about .about-narrative__heading {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--c-primary-blue);
  margin-bottom: 1.75rem;
  position: relative;
  display: inline-block;
}

.page-about .about-narrative__heading::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--c-accent-gold);
  border-radius: 2px;
}

.page-about .about-narrative__content {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.page-about .about-narrative__text {
  font-size: 1.05rem;
  color: var(--c-text-primary);
  line-height: 1.75;
  margin: 0;
}

.page-about .about-narrative__quote {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--c-primary-red);
  border-left: 4px solid var(--c-accent-gold);
  padding-left: 1.25rem;
  margin: 0.75rem 0 0;
  background: var(--about-red-soft);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ===== 核心价值观 ===== */
.page-about .about-values {
  background: var(--c-bg-light);
  padding: 0 0 4rem;
}

.page-about .about-values__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-about .about-values__item {
  background: var(--c-text-light);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  border-top: 3px solid transparent;
}

.page-about .about-values__item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.page-about .about-values__item:nth-child(1) { border-top-color: var(--c-primary-red); }
.page-about .about-values__item:nth-child(2) { border-top-color: var(--c-primary-blue); }
.page-about .about-values__item:nth-child(3) { border-top-color: var(--c-accent-gold); }

.page-about .about-values__icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  margin-bottom: 1.25rem;
  background: var(--about-red-soft);
  color: var(--c-primary-red);
}

.page-about .about-values__item:nth-child(2) .about-values__icon-wrap {
  background: var(--about-blue-soft);
  color: var(--c-primary-blue);
}

.page-about .about-values__item:nth-child(3) .about-values__icon-wrap {
  background: var(--about-gold-light);
  color: var(--c-accent-gold);
}

.page-about .about-values__icon {
  display: block;
}

.page-about .about-values__title {
  font-family: var(--font-heading-bold);
  font-size: 1.35rem;
  color: var(--c-primary-blue);
  margin: 0 0 0.5rem;
  letter-spacing: 0.02em;
}

.page-about .about-values__desc {
  font-size: 0.95rem;
  color: var(--c-text-secondary);
  line-height: 1.6;
  margin: 0;
  max-width: 28ch;
  margin-left: auto;
  margin-right: auto;
}

/* ===== 核心数据 ===== */
.page-about .about-stats {
  background: var(--about-stat-bg);
  padding: 4.5rem 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-stats::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c-accent-gold), var(--c-primary-red), var(--c-accent-gold));
}

.page-about .about-stats__heading {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--c-text-light);
  text-align: center;
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}

.page-about .about-stats__heading::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--c-accent-gold);
  border-radius: 2px;
}

.page-about .about-stats__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-about .about-stats__card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: var(--radius);
  padding: 1.75rem 1.25rem;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: transform var(--transition), background var(--transition);
}

.page-about .about-stats__card:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.1);
}

.page-about .about-stats__number {
  display: block;
  font-family: var(--font-heading-bold);
  font-size: 2.4rem;
  color: var(--c-accent-gold);
  line-height: 1.1;
  margin-bottom: 0.25rem;
  letter-spacing: -0.02em;
}

.page-about .about-stats__label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.page-about .about-stats__note {
  display: block;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 400;
}

.page-about .about-stats__image-wrap {
  max-width: 500px;
  margin: 2rem auto 0;
  padding: 0 1.5rem;
}

.page-about .about-stats__img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  display: block;
}

/* ===== 团队理念 ===== */
.page-about .about-philosophy {
  background: var(--c-bg-light);
  padding: 4.5rem 0;
}

.page-about .about-philosophy__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1.5rem;
  align-items: center;
}

.page-about .about-philosophy__image-wrap {
  order: -1;
}

.page-about .about-philosophy__img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: block;
}

.page-about .about-philosophy__text {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-about .about-philosophy__heading {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--c-primary-blue);
  margin-bottom: 0.25rem;
  position: relative;
  display: inline-block;
}

.page-about .about-philosophy__heading::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--c-primary-red);
  border-radius: 2px;
}

.page-about .about-philosophy__paragraph {
  font-size: 1.02rem;
  color: var(--c-text-primary);
  line-height: 1.7;
  margin: 0;
}

.page-about .about-philosophy__list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.page-about .about-philosophy__list-item {
  position: relative;
  padding-left: 1.75rem;
  font-size: 0.98rem;
  color: var(--c-text-primary);
  line-height: 1.5;
}

.page-about .about-philosophy__list-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-accent-gold);
}

.page-about .about-philosophy__list-item:nth-child(1)::before { background: var(--c-primary-red); }
.page-about .about-philosophy__list-item:nth-child(2)::before { background: var(--c-primary-blue); }
.page-about .about-philosophy__list-item:nth-child(3)::before { background: var(--c-accent-gold); }

/* ===== 联系方式引入 ===== */
.page-about .about-contact {
  background: var(--c-bg-light);
  padding: 0 0 4.5rem;
}

.page-about .about-contact__card {
  max-width: 700px;
  margin: 0 auto;
  padding: 3rem 2rem;
  text-align: center;
  background: linear-gradient(135deg, var(--c-primary-blue), #16213e);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  position: relative;
  overflow: hidden;
}

.page-about .about-contact__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--c-accent-gold), var(--c-primary-red), var(--c-accent-gold));
}

.page-about .about-contact__title {
  font-family: var(--font-heading-bold);
  font-size: 2rem;
  color: var(--c-text-light);
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}

.page-about .about-contact__text {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
  max-width: 40rem;
  margin: 0 auto 1.75rem;
}

.page-about .about-contact__btn {
  display: inline-block;
  background: var(--c-primary-red);
  color: var(--c-text-light);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.85rem 2.5rem;
  border-radius: 100px;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 15px rgba(230, 57, 70, 0.35);
}

.page-about .about-contact__btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 25px rgba(230, 57, 70, 0.5);
}

.page-about .about-contact__btn:focus-visible {
  outline: 3px solid var(--c-accent-gold);
  outline-offset: 3px;
}

/* ===== 滚动显现动画 ===== */
.page-about [data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.page-about [data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 桌面端 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    min-height: 85vh;
    padding: 8rem 0 5rem;
  }

  .page-about .about-hero__title {
    font-size: 5rem;
    max-width: 12ch;
  }

  .page-about .about-hero__subtitle {
    font-size: 1.35rem;
  }

  .page-about .about-hero__lead {
    font-size: 1.15rem;
  }

  .page-about .about-narrative {
    padding: 5rem 0;
  }

  .page-about .about-narrative__heading {
    font-size: 2.4rem;
  }

  .page-about .about-narrative__text {
    font-size: 1.1rem;
  }

  .page-about .about-narrative__quote {
    font-size: 1.4rem;
    padding: 1.25rem 1.75rem;
  }

  .page-about .about-values__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .page-about .about-values__item {
    padding: 2.5rem 2rem;
  }

  .page-about .about-stats {
    padding: 5.5rem 0;
  }

  .page-about .about-stats__heading {
    font-size: 2.4rem;
  }

  .page-about .about-stats__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }

  .page-about .about-stats__number {
    font-size: 3rem;
  }

  .page-about .about-stats__card {
    padding: 2rem 1.5rem;
  }

  .page-about .about-philosophy {
    padding: 5.5rem 0;
  }

  .page-about .about-philosophy__inner {
    grid-template-columns: 1fr 1.1fr;
    gap: 3.5rem;
  }

  .page-about .about-philosophy__image-wrap {
    order: 0;
  }

  .page-about .about-philosophy__heading {
    font-size: 2.4rem;
  }

  .page-about .about-contact {
    padding: 0 0 5.5rem;
  }

  .page-about .about-contact__card {
    padding: 4rem 3rem;
  }

  .page-about .about-contact__title {
    font-size: 2.4rem;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__title {
    font-size: 6rem;
  }

  .page-about .about-hero__inner {
    padding: 0 2rem;
  }

  .page-about .about-hero__kicker {
    font-size: 0.9rem;
  }
}

/* ===== 减少动效 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-about [data-animate] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .about-values__item,
  .page-about .about-stats__card,
  .page-about .about-contact__btn {
    transition: none;
  }

  .page-about .about-values__item:hover,
  .page-about .about-stats__card:hover {
    transform: none;
  }

  .page-about .about-contact__btn:hover {
    transform: none;
  }
}