/* ===== 页面专属样式：about ===== */
.page-about {
  display: block;
  width: 100%;
  background: var(--color-deep-blue, #0A1A2F);
  color: var(--color-white, #F5F5F5);
  font-family: var(--font-body, 'Inter', system-ui, sans-serif);
}

/* ---- 容器与通用 ---- */
.page-about .container {
  max-width: var(--container-max, 1200px);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.page-about .section-heading {
  font-family: var(--font-heading, 'Inter Tight', system-ui, sans-serif);
  font-size: 32px;
  font-weight: 700;
  font-style: italic;
  color: var(--color-white, #F5F5F5);
  margin: 0 0 8px 0;
  letter-spacing: -0.01em;
  position: relative;
  display: inline-block;
}
.page-about .section-heading::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--color-fire, #FF6A00);
  margin-top: 8px;
  border-radius: 2px;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-heading, 'Inter Tight', system-ui, sans-serif);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  border: var(--border-width, 3px) solid transparent;
  border-radius: var(--border-radius, 8px);
  cursor: default;
  transition: background var(--transition-base, 0.25s ease), border-color var(--transition-base, 0.25s ease), transform var(--transition-base, 0.25s ease);
}
.page-about .btn--primary {
  background: var(--color-fire, #FF6A00);
  color: var(--color-white, #F5F5F5);
  border-color: var(--color-fire, #FF6A00);
}
.page-about .btn--primary:hover {
  background: var(--color-fire-dark, #E05E00);
  border-color: var(--color-fire-dark, #E05E00);
  transform: translateY(-2px);
}

/* ---- 面包屑 ---- */
.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 16px;
  padding-bottom: 16px;
  font-size: 14px;
  color: var(--color-gray, #D0D0D0);
  flex-wrap: wrap;
}
.page-about .breadcrumb__link {
  color: var(--color-gray, #D0D0D0);
  text-decoration: none;
  transition: color var(--transition-base, 0.25s ease);
}
.page-about .breadcrumb__link:hover {
  color: var(--color-fire, #FF6A00);
}
.page-about .breadcrumb__separator {
  color: var(--color-gray, #D0D0D0);
  opacity: 0.5;
}
.page-about .breadcrumb__current {
  color: var(--color-white, #F5F5F5);
  font-weight: 600;
}

/* ---- 首屏 Hero ---- */
.page-about .hero {
  display: flex;
  flex-direction: column;
  width: 100%;
  min-height: 0;
  background: var(--color-deep-blue, #0A1A2F);
}

.page-about .hero__text {
  background: var(--color-deep-blue, #0A1A2F);
  padding: 40px 24px 48px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .hero__badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-fire, #FF6A00);
  background: rgba(255, 106, 0, 0.12);
  padding: 4px 14px;
  border-radius: 20px;
  border: 1px solid rgba(255, 106, 0, 0.25);
  align-self: flex-start;
}

.page-about .hero__brand {
  font-family: var(--font-heading, 'Inter Tight', system-ui, sans-serif);
  font-size: 48px;
  font-weight: 800;
  font-style: italic;
  color: var(--color-white, #F5F5F5);
  margin: 0;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.page-about .hero__brand::first-letter {
  color: var(--color-fire, #FF6A00);
}

.page-about .hero__tagline {
  font-size: 18px;
  font-weight: 400;
  color: var(--color-gray, #D0D0D0);
  margin: 0;
  line-height: 1.5;
  max-width: 480px;
}

.page-about .hero__service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-about .hero__service-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--color-white, #F5F5F5);
}
.page-about .hero__service-icon {
  color: var(--color-fire, #FF6A00);
  font-size: 12px;
  flex-shrink: 0;
  margin-top: 5px;
}

.page-about .hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-black, #0B0B0C);
  overflow: hidden;
  min-height: 360px;
}

.page-about .hero__visual-frame {
  position: relative;
  width: 100%;
  max-width: 500px;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.page-about .hero__visual-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  position: relative;
  z-index: 2;
  display: block;
  transition: opacity var(--transition-base, 0.25s ease);
}
.page-about .hero__visual-img:hover {
  animation: fox-flicker 0.6s ease-in-out 2;
}

@keyframes fox-flicker {
  0%, 100% { opacity: 1; }
  25% { opacity: 0.75; }
  50% { opacity: 0.9; }
  75% { opacity: 0.7; }
}

.page-about .hero__visual-glow {
  position: absolute;
  inset: 10%;
  background: radial-gradient(circle at center, rgba(255, 106, 0, 0.20) 0%, rgba(255, 106, 0, 0.05) 50%, transparent 70%);
  z-index: 1;
  pointer-events: none;
  border-radius: 50%;
}

/* ---- 核心服务卡片 ---- */
.page-about .services {
  padding-top: 64px;
  padding-bottom: 64px;
  background: var(--color-deep-blue, #0A1A2F);
}

.page-about .services__header {
  margin-bottom: 40px;
  text-align: center;
}
.page-about .services__header .section-heading::after {
  margin-left: auto;
  margin-right: auto;
}

.page-about .services__subtitle {
  font-size: 16px;
  color: var(--color-gray, #D0D0D0);
  margin: 8px 0 0 0;
  line-height: 1.5;
}

.page-about .services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .service-card {
  background: var(--color-dark-blue, #1C2A40);
  border: var(--border-width, 3px) solid transparent;
  border-radius: var(--border-radius, 8px);
  padding: 28px 24px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-card, 0 20px 40px rgba(0,0,0,0.6));
  transition: background var(--transition-base, 0.25s ease), border-color var(--transition-base, 0.25s ease), transform var(--transition-base, 0.25s ease);
}
.page-about .service-card:hover {
  background: rgba(255, 106, 0, 0.10);
  border-color: var(--color-fire, #FF6A00);
  transform: translateY(-4px);
}

.page-about .service-card__icon-wrap {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-deep-blue, #0A1A2F);
  border: 2px solid rgba(255, 106, 0, 0.20);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.page-about .service-card__icon {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .service-card__title {
  font-family: var(--font-heading, 'Inter Tight', system-ui, sans-serif);
  font-size: 22px;
  font-weight: 700;
  font-style: italic;
  color: var(--color-white, #F5F5F5);
  margin: 0;
}

.page-about .service-card__text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-gray, #D0D0D0);
  margin: 0;
  flex-grow: 1;
}

.page-about .service-card__link {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-fire, #FF6A00);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition-base, 0.25s ease);
}
.page-about .service-card__link:hover {
  color: var(--color-white, #F5F5F5);
}

/* ---- 全宽赛场横幅 ---- */
.page-about .banner {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: var(--color-black, #0B0B0C);
}

.page-about .banner__image-wrap {
  width: 100%;
  height: 280px;
  overflow: hidden;
}
.page-about .banner__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: brightness(0.45) saturate(1.1);
}

.page-about .banner__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 24px;
  background: rgba(10, 26, 47, 0.55);
}

.page-about .banner__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 4px;
}

.page-about .banner__stat-number {
  font-family: var(--font-heading, 'Inter Tight', system-ui, sans-serif);
  font-size: 24px;
  font-weight: 700;
  font-style: italic;
  color: var(--color-fire, #FF6A00);
  letter-spacing: 0.02em;
}

.page-about .banner__stat-label {
  font-size: 13px;
  color: var(--color-gray, #D0D0D0);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---- 联系我们 ---- */
.page-about .contact-info {
  padding-top: 56px;
  padding-bottom: 64px;
  background: var(--color-deep-blue, #0A1A2F);
}

.page-about .contact-info__inner {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

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

.page-about .contact-info__item {
  background: var(--color-dark-blue, #1C2A40);
  border-radius: var(--border-radius, 8px);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-left: 4px solid var(--color-fire, #FF6A00);
  transition: background var(--transition-base, 0.25s ease);
}
.page-about .contact-info__item:hover {
  background: rgba(255, 106, 0, 0.08);
}

.page-about .contact-info__label {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-gray, #D0D0D0);
}

.page-about .contact-info__value {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-white, #F5F5F5);
  word-break: break-all;
}

.page-about .contact-info__note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-gray, #D0D0D0);
  margin: 0;
}

.page-about .contact-info__link {
  color: var(--color-fire, #FF6A00);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-base, 0.25s ease);
}
.page-about .contact-info__link:hover {
  color: var(--color-white, #F5F5F5);
  text-decoration: underline;
}

.page-about .contact-info__bottom {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px solid var(--color-dark-blue, #1C2A40);
  font-size: 13px;
  color: var(--color-gray, #D0D0D0);
}

.page-about .contact-info__icp {
  color: var(--color-gray, #D0D0D0);
}

.page-about .contact-info__sep {
  opacity: 0.35;
}

/* ===== 桌面端媒体查询 ===== */
@media (min-width: 768px) {
  .page-about .section-heading {
    font-size: 40px;
  }

  /* ---- 首屏 Hero 桌面 ---- */
  .page-about .hero {
    flex-direction: row;
    min-height: 640px;
  }

  .page-about .hero__text {
    flex: 0 0 38%;
    padding: 80px 40px 80px 48px;
    justify-content: center;
    gap: 20px;
  }

  .page-about .hero__brand {
    font-size: 56px;
  }

  .page-about .hero__tagline {
    font-size: 20px;
  }

  .page-about .hero__service-item {
    font-size: 16px;
  }

  .page-about .hero__visual {
    flex: 1 1 62%;
    min-height: 640px;
  }

  .page-about .hero__visual-frame {
    max-width: 560px;
    padding: 40px;
  }

  /* ---- 核心服务网格 ---- */
  .page-about .services__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .page-about .services {
    padding-top: 80px;
    padding-bottom: 80px;
  }

  /* ---- 全宽横幅 ---- */
  .page-about .banner__image-wrap {
    height: 400px;
  }

  .page-about .banner__overlay {
    flex-direction: row;
    gap: 48px;
  }

  .page-about .banner__stat-number {
    font-size: 32px;
  }

  .page-about .banner__stat-label {
    font-size: 14px;
  }

  /* ---- 联系信息网格 ---- */
  .page-about .contact-info__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .page-about .contact-info__value {
    font-size: 20px;
  }

  .page-about .contact-info {
    padding-top: 72px;
    padding-bottom: 80px;
  }
}

@media (min-width: 1024px) {
  .page-about .hero__text {
    padding-left: 64px;
    padding-right: 48px;
  }

  .page-about .hero__brand {
    font-size: 64px;
  }

  .page-about .hero__visual-frame {
    max-width: 600px;
  }

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