/* ===== 品牌故事页专属样式 .page-about ===== */
.page-about {
  --about-hero-bg: #0B1D3A;
  --about-hero-text: #F5F1E8;
  --about-accent-gold: #D4AF37;
  --about-accent-ice: #7EC8E3;
  --about-surface: #E8E1D5;
  --about-body-text: #1A1A1A;
  --about-border: #3A5A7A;
  --about-card-shadow: 0 4px 16px rgba(11,29,58,0.18);
  --about-card-hover-shadow: 0 8px 28px rgba(11,29,58,0.26);
  background-color: #F5F1E8;
  color: var(--about-body-text);
  font-family: var(--font-body, "Noto Sans SC", sans-serif);
  line-height: 1.6;
}

/* ---- 面包屑 ---- */
.about-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.about-breadcrumb__link {
  color: var(--about-accent-ice);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.about-breadcrumb__link:hover,
.about-breadcrumb__link:focus-visible {
  border-bottom-color: var(--about-accent-ice);
}
.about-breadcrumb__sep {
  color: rgba(245,241,232,0.5);
}
.about-breadcrumb__current {
  color: var(--about-accent-gold);
  font-weight: 600;
}

/* ---- 首屏 ---- */
.about-hero {
  background-color: var(--about-hero-bg);
  color: var(--about-hero-text);
  padding: 2rem 1.25rem 2.5rem;
  position: relative;
  overflow: hidden;
}
.about-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -10%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,175,55,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.about-hero__inner {
  max-width: var(--content-max, 1200px);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.about-hero__grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.about-hero__content {
  order: 1;
}
.about-hero__image-wrap {
  order: 2;
}
.about-hero__label {
  display: inline-block;
  font-family: var(--font-heading, "Montserrat Black", sans-serif);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--about-accent-gold);
  border: 1px solid var(--about-accent-gold);
  padding: 0.3rem 0.8rem;
  margin-bottom: 1rem;
}
.about-hero__title {
  font-family: var(--font-heading, "Montserrat Black", sans-serif);
  font-size: 2.2rem;
  line-height: 1.15;
  margin: 0 0 1rem;
  color: var(--about-hero-text);
}
.about-hero__desc {
  font-size: 1rem;
  color: rgba(245,241,232,0.85);
  max-width: 540px;
  margin: 0 0 1.8rem;
  line-height: 1.7;
}
.about-hero__index {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.about-hero__index-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.about-hero__index-num {
  font-family: var(--font-heading, "Montserrat Black", sans-serif);
  font-size: 1.2rem;
  color: var(--about-accent-gold);
  opacity: 0.7;
}
.about-hero__index-label {
  font-size: 0.9rem;
  color: rgba(245,241,232,0.8);
  border-bottom: 1px solid rgba(212,175,55,0.3);
}
.about-hero__image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--border-thick, 2px solid #3A5A7A);
  box-shadow: var(--shadow-card, 0 4px 16px rgba(11,29,58,0.18));
}

/* ---- 我们的专注 ---- */
.about-focus {
  padding: 3rem 1.25rem;
  background-color: #F5F1E8;
}
.about-focus__grid {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
.about-focus__title {
  font-family: var(--font-heading, "Montserrat Black", sans-serif);
  font-size: 1.75rem;
  color: var(--about-hero-bg);
  margin: 0 0 1rem;
  position: relative;
  padding-bottom: 0.75rem;
}
.about-focus__title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background-color: var(--about-accent-gold);
}
.about-focus__desc {
  font-size: 1rem;
  color: var(--about-body-text);
  line-height: 1.7;
  margin: 0 0 1rem;
  max-width: 680px;
}
.about-focus__stats {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}
.about-focus__stat-card {
  background-color: var(--about-surface);
  padding: 1rem 1.25rem;
  border-left: 4px solid var(--about-accent-gold);
  box-shadow: var(--about-card-shadow);
}
.about-focus__stat-value {
  display: block;
  font-family: var(--font-heading, "Montserrat Black", sans-serif);
  font-size: 1.1rem;
  color: var(--about-hero-bg);
  margin-bottom: 0.4rem;
}
.about-focus__stat-bar {
  height: 6px;
  background-color: rgba(11,29,58,0.12);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 0.3rem;
}
.about-focus__stat-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--about-accent-gold), #e6c35c);
  border-radius: 3px;
}
.about-focus__stat-label {
  font-size: 0.8rem;
  color: rgba(26,26,26,0.7);
  letter-spacing: 0.02em;
}
.about-focus__deco {
  display: none;
}

/* ---- 能力图谱 ---- */
.about-capabilities {
  padding: 3rem 1.25rem 2.5rem;
  background-color: #F5F1E8;
  position: relative;
}
.about-capabilities__title {
  font-family: var(--font-heading, "Montserrat Black", sans-serif);
  font-size: 1.75rem;
  color: var(--about-hero-bg);
  margin: 0 0 0.75rem;
  position: relative;
  padding-bottom: 0.75rem;
}
.about-capabilities__title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background-color: var(--about-accent-gold);
}
.about-capabilities__intro {
  font-size: 1rem;
  color: rgba(26,26,26,0.75);
  margin: 0 0 1.8rem;
  max-width: 560px;
}

/* 标签导航 */
.about-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid rgba(11,29,58,0.12);
  padding-bottom: 0;
}
.about-tabs__trigger {
  font-family: var(--font-heading, "Montserrat Black", sans-serif);
  font-size: 0.9rem;
  padding: 0.65rem 1.2rem;
  border: none;
  background: transparent;
  color: rgba(26,26,26,0.6);
  cursor: pointer;
  position: relative;
  transition: color 0.2s, background 0.2s;
  letter-spacing: 0.03em;
}
.about-tabs__trigger::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
  transition: background 0.2s;
}
.about-tabs__trigger[aria-selected="true"] {
  color: var(--about-hero-bg);
}
.about-tabs__trigger[aria-selected="true"]::after {
  background: var(--about-accent-gold);
}
.about-tabs__trigger:hover,
.about-tabs__trigger:focus-visible {
  color: var(--about-hero-bg);
  outline: none;
  background: rgba(11,29,58,0.04);
}

/* 标签面板 */
.about-tabs__panels {
  margin-bottom: 2rem;
}
.about-tabs__panel {
  background-color: var(--about-surface);
  padding: 1.5rem;
  border: var(--border-thick, 2px solid #3A5A7A);
  box-shadow: var(--about-card-shadow);
}
.about-tabs__panel[hidden] {
  display: none;
}
.about-panel__inner {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.about-panel__heading {
  font-family: var(--font-heading, "Montserrat Black", sans-serif);
  font-size: 1.25rem;
  color: var(--about-hero-bg);
  margin: 0 0 0.5rem;
}
.about-panel__desc {
  font-size: 0.95rem;
  color: var(--about-body-text);
  line-height: 1.7;
  margin: 0 0 1rem;
}
.about-panel__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.about-panel__list-item {
  font-size: 0.9rem;
  color: rgba(26,26,26,0.8);
  padding-left: 1.2rem;
  position: relative;
}
.about-panel__list-item::before {
  content: "◆";
  position: absolute;
  left: 0;
  color: var(--about-accent-gold);
  font-size: 0.6rem;
  top: 0.35em;
}
.about-panel__visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100px;
}
.about-panel__icon svg {
  display: block;
  width: 64px;
  height: 64px;
}

/* 信息图 */
.about-capabilities__infographic {
  margin-top: 1.5rem;
}
.about-capabilities__image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--border-thick, 2px solid #3A5A7A);
  box-shadow: var(--about-card-shadow);
}

/* ---- 侧边装饰 ---- */
.about-deco-rail {
  display: none;
}

/* ---- 延伸阅读 ---- */
.about-links {
  padding: 2.5rem 1.25rem 3rem;
  background-color: #F5F1E8;
}
.about-links__title {
  font-family: var(--font-heading, "Montserrat Black", sans-serif);
  font-size: 1.5rem;
  color: var(--about-hero-bg);
  margin: 0 0 1.5rem;
  position: relative;
  padding-bottom: 0.75rem;
}
.about-links__title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background-color: var(--about-accent-gold);
}
.about-links__grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.about-links__card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background-color: #F5F1E8;
  border: var(--border-thick, 2px solid #3A5A7A);
  box-shadow: var(--about-card-shadow);
  text-decoration: none;
  color: var(--about-body-text);
  transition: box-shadow 0.2s, transform 0.2s, background 0.2s;
}
.about-links__card:hover,
.about-links__card:focus-visible {
  box-shadow: var(--about-card-hover-shadow);
  transform: translateY(-2px);
  background-color: #FFF;
  outline: none;
}
.about-links__card-num {
  font-family: var(--font-heading, "Montserrat Black", sans-serif);
  font-size: 1.2rem;
  color: var(--about-accent-gold);
  opacity: 0.7;
  min-width: 2rem;
}
.about-links__card-label {
  font-size: 1rem;
  font-weight: 600;
  flex: 1;
}
.about-links__card-arrow {
  font-size: 1.2rem;
  color: var(--about-hero-bg);
  opacity: 0.4;
  transition: opacity 0.2s, transform 0.2s;
}
.about-links__card:hover .about-links__card-arrow,
.about-links__card:focus-visible .about-links__card-arrow {
  opacity: 1;
  transform: translateX(4px);
}

/* ===== 响应式：桌面端 ≥768px ===== */
@media (min-width: 768px) {
  /* ---- 首屏 ---- */
  .about-hero {
    padding: 3rem 2rem 4rem;
  }
  .about-hero__grid {
    flex-direction: row;
    align-items: center;
    gap: 3rem;
  }
  .about-hero__content {
    order: 1;
    flex: 1 1 45%;
  }
  .about-hero__image-wrap {
    order: 2;
    flex: 1 1 50%;
  }
  .about-hero__title {
    font-size: 3rem;
    max-width: 480px;
  }
  .about-hero__desc {
    font-size: 1.1rem;
  }
  .about-hero__index {
    gap: 2rem;
  }
  .about-hero__index-num {
    font-size: 1.4rem;
  }

  /* ---- 我们的专注 ---- */
  .about-focus {
    padding: 5rem 2rem;
  }
  .about-focus__grid {
    flex-direction: row;
    gap: 3rem;
    align-items: flex-start;
  }
  .about-focus__text {
    flex: 1 1 60%;
  }
  .about-focus__title {
    font-size: 2.25rem;
  }
  .about-focus__stats {
    flex-direction: row;
    gap: 1.25rem;
  }
  .about-focus__stat-card {
    flex: 1;
  }
  .about-focus__deco {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex: 1 1 30%;
    max-width: 200px;
    padding-top: 0.5rem;
  }
  .about-focus__deco-block {
    height: 60px;
    background-color: var(--about-hero-bg);
    border-left: 6px solid var(--about-accent-gold);
    opacity: 0.7;
  }
  .about-focus__deco-block:nth-child(2) {
    height: 40px;
    opacity: 0.5;
    margin-left: 1.5rem;
  }
  .about-focus__deco-block:nth-child(3) {
    height: 80px;
    opacity: 0.3;
    margin-left: 0.5rem;
  }

  /* ---- 能力图谱 ---- */
  .about-capabilities {
    padding: 5rem 2rem 4rem;
  }
  .about-capabilities__title {
    font-size: 2.25rem;
  }
  .about-tabs {
    gap: 0.5rem;
  }
  .about-tabs__trigger {
    font-size: 1rem;
    padding: 0.8rem 1.8rem;
  }
  .about-tabs__panel {
    padding: 2rem;
  }
  .about-panel__inner {
    flex-direction: row;
    gap: 2rem;
    align-items: center;
  }
  .about-panel__text {
    flex: 1 1 60%;
  }
  .about-panel__visual {
    flex: 1 1 35%;
    min-height: 120px;
  }
  .about-panel__icon svg {
    width: 80px;
    height: 80px;
  }
  .about-capabilities__infographic {
    margin-top: 2.5rem;
    text-align: center;
  }
  .about-capabilities__image {
    max-width: 600px;
    margin: 0 auto;
  }

  /* ---- 侧边装饰 ---- */
  .about-deco-rail {
    display: block;
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: auto;
    height: auto;
    z-index: 0;
    pointer-events: none;
    opacity: 0.25;
  }
  .about-deco-rail__image {
    display: block;
    width: 80px;
    height: 400px;
    object-fit: cover;
    border-left: 3px solid var(--about-accent-gold);
  }

  /* ---- 延伸阅读 ---- */
  .about-links {
    padding: 4rem 2rem;
  }
  .about-links__title {
    font-size: 1.75rem;
  }
  .about-links__grid {
    flex-direction: row;
    gap: 1.25rem;
  }
  .about-links__card {
    flex: 1;
    padding: 1.25rem 1.5rem;
  }
}

/* ===== 宽屏 ≥1024px ===== */
@media (min-width: 1024px) {
  .about-hero {
    padding: 4rem 2rem 5rem;
  }
  .about-hero__title {
    font-size: 3.5rem;
  }
  .about-hero__desc {
    font-size: 1.15rem;
  }
  .about-focus {
    padding: 6rem 2rem;
  }
  .about-capabilities {
    padding: 6rem 2rem 5rem;
  }
  .about-deco-rail__image {
    width: 100px;
    height: 500px;
  }
}