/* ========== 页面专属：.page-about 品牌概况 ========== */
.page-about {
  --about-hero-bg: #0F1A2E;
  --about-card-accent-bg: rgba(255, 102, 0, 0.08);
  --about-card-hover-shadow: 0 12px 36px rgba(255, 102, 0, 0.20);
  --about-stat-color: #FF6600;
  --about-annotation-color: #00B4D8;
  --about-grid-line: rgba(255, 255, 255, 0.04);

  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--color-secondary, #1A1A2E);
  color: var(--color-text-on-dark, #FFFFFF);
  position: relative;
  overflow-x: hidden;
}

/* ---------- 顶部英雄区 ---------- */
.page-about .about-hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem 2.5rem;
  background: var(--about-hero-bg);
  background-image:
    linear-gradient(45deg, var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(-45deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  text-align: center;
  overflow: hidden;
}

.page-about .about-hero::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(255, 102, 0, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 80%, rgba(0, 180, 216, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.page-about .about-hero__logo-box {
  position: relative;
  z-index: 1;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(255, 102, 0, 0.10);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  border: 2px solid rgba(255, 102, 0, 0.25);
  box-shadow: 0 0 60px rgba(255, 102, 0, 0.15);
}

.page-about .about-hero__logo {
  width: 100px;
  height: 100px;
  object-fit: contain;
  border-radius: 50%;
}

.page-about .about-hero__text-group {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-about .about-hero__title {
  font-family: var(--font-primary, 'Noto Sans SC', sans-serif);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-on-dark, #FFFFFF);
  margin: 0 0 0.15rem;
  letter-spacing: -0.02em;
}

.page-about .about-hero__annotation {
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--about-annotation-color);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.15em;
  opacity: 0.7;
  margin-bottom: 0.5rem;
  transform: rotate(180deg);
  align-self: flex-end;
  margin-right: 0.5rem;
}

.page-about .about-hero__subtitle {
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-secondary, #B0B0B0);
  max-width: 480px;
  margin: 0.5rem auto 0;
  line-height: 1.5;
}

/* ---------- 品牌故事 ---------- */
.page-about .about-story {
  padding: 2.5rem 1rem;
}

.page-about .about-story__inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.page-about .about-story__content {
  flex: 1;
}

.page-about .about-story__heading {
  font-family: var(--font-primary, 'Noto Sans SC', sans-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary, #FF6600);
  margin: 0 0 1rem;
  line-height: 1.3;
}

.page-about .about-story__text {
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-on-dark, #FFFFFF);
  margin: 0 0 1rem;
  max-width: 620px;
}

.page-about .about-story__cta {
  margin-top: 0.5rem;
  display: inline-block;
}

/* 关键事实卡片 */
.page-about .about-story__fact-card {
  position: relative;
  flex: 0 0 auto;
  width: 100%;
  border-radius: var(--radius-lg, 24px);
  overflow: hidden;
  background: var(--color-bg-dark, #16213E);
  border-left: 4px solid var(--color-primary, #FF6600);
  box-shadow: var(--shadow-md, 0 6px 24px rgba(0,0,0,0.16));
  transition: box-shadow var(--transition-base, 0.3s ease);
}

.page-about .about-story__fact-card:hover {
  box-shadow: var(--shadow-lg, 0 12px 40px rgba(0,0,0,0.24));
}

.page-about .about-story__fact-card-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  opacity: 0.15;
  overflow: hidden;
}

.page-about .about-story__fact-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-story__fact-card-body {
  position: relative;
  z-index: 1;
  padding: 1.5rem;
}

.page-about .about-story__fact-list {
  list-style: none;
  margin: 1rem 0 0.75rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.page-about .about-story__fact-list li {
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--color-text-on-dark, #FFFFFF);
  padding-left: 1.5rem;
  position: relative;
}

.page-about .about-story__fact-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary, #FF6600);
  font-weight: 700;
}

.page-about .about-story__fact-link {
  display: inline-block;
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 0.9rem;
  color: var(--color-accent, #00B4D8);
  text-decoration: none;
  font-weight: 500;
  margin-top: 0.25rem;
  transition: color var(--transition-fast, 0.2s ease);
}

.page-about .about-story__fact-link:hover {
  color: var(--color-primary, #FF6600);
}

/* ---------- 核心价值 ---------- */
.page-about .about-values {
  padding: 2rem 1rem 3rem;
}

.page-about .about-values__header {
  text-align: center;
  margin-bottom: 2rem;
}

.page-about .about-values__heading {
  font-family: var(--font-primary, 'Noto Sans SC', sans-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text-on-dark, #FFFFFF);
  margin: 0 0 0.5rem;
}

.page-about .about-values__intro {
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 1rem;
  color: var(--color-text-secondary, #B0B0B0);
  margin: 0;
}

.page-about .about-values__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-about .about-values__card {
  position: relative;
  padding: 1.75rem 1.5rem;
  background: var(--color-bg-dark, #16213E);
  border-radius: var(--radius-md, 16px);
  text-align: center;
  cursor: default;
  transition: transform var(--transition-base, 0.3s ease), box-shadow var(--transition-base, 0.3s ease);
  overflow: hidden;
}

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

.page-about .about-values__icon-wrap {
  width: 52px;
  height: 52px;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about .about-values__icon {
  width: 48px;
  height: 48px;
  display: block;
}

.page-about .about-values__card-title {
  font-family: var(--font-primary, 'Noto Sans SC', sans-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-on-dark, #FFFFFF);
  margin: 0 0 0.5rem;
}

.page-about .about-values__card-text {
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-secondary, #B0B0B0);
  margin: 0;
  transition: opacity var(--transition-fast, 0.2s ease);
}

.page-about .about-values__card-hover-text {
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-on-dark, #FFFFFF);
  background: rgba(255, 102, 0, 0.08);
  border-radius: var(--radius-sm, 8px);
  padding: 0.75rem 1rem;
  margin-top: 1rem;
  border-left: 3px solid var(--color-primary, #FF6600);
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity var(--transition-base, 0.3s ease), max-height var(--transition-base, 0.3s ease), padding var(--transition-base, 0.3s ease);
}

.page-about .about-values__card:hover .about-values__card-hover-text {
  opacity: 1;
  max-height: 200px;
  padding: 0.75rem 1rem;
}

/* ---------- 团队与文化 ---------- */
.page-about .about-culture {
  padding: 2.5rem 1rem;
}

.page-about .about-culture__inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.page-about .about-culture__text-col {
  flex: 1;
}

.page-about .about-culture__heading {
  font-family: var(--font-primary, 'Noto Sans SC', sans-serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary, #FF6600);
  margin: 0 0 1rem;
}

.page-about .about-culture__text {
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-on-dark, #FFFFFF);
  margin: 0 0 1rem;
  max-width: 580px;
}

.page-about .about-culture__stats {
  display: flex;
  gap: 1.5rem;
  margin: 1.5rem 0;
  flex-wrap: wrap;
}

.page-about .about-culture__stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 70px;
}

.page-about .about-culture__stat-num {
  font-family: var(--font-primary, 'Noto Sans SC', sans-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--about-stat-color);
  line-height: 1.2;
}

.page-about .about-culture__stat-label {
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 0.8rem;
  color: var(--color-text-secondary, #B0B0B0);
  margin-top: 0.2rem;
}

.page-about .about-culture__faq-link {
  margin-top: 0.5rem;
  display: inline-block;
}

.page-about .about-culture__img-col {
  flex: 0 0 auto;
}

.page-about .about-culture__img-wrap {
  border-radius: var(--radius-md, 16px);
  overflow: hidden;
  box-shadow: var(--shadow-md, 0 6px 24px rgba(0,0,0,0.16));
  background: var(--color-bg-dark, #16213E);
}

.page-about .about-culture__img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ---------- 联系引导 ---------- */
.page-about .about-contact {
  padding: 2rem 1rem 3rem;
}

.page-about .about-contact__card {
  background: var(--color-bg-dark, #16213E);
  border-radius: var(--radius-lg, 24px);
  padding: 2rem 1.5rem;
  border: 1px solid rgba(255, 102, 0, 0.15);
  box-shadow: var(--shadow-md, 0 6px 24px rgba(0,0,0,0.16));
}

.page-about .about-contact__inner {
  text-align: center;
  max-width: 520px;
  margin: 0 auto;
}

.page-about .about-contact__heading {
  font-family: var(--font-primary, 'Noto Sans SC', sans-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-on-dark, #FFFFFF);
  margin: 0 0 0.75rem;
}

.page-about .about-contact__text {
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-secondary, #B0B0B0);
  margin: 0 0 1.25rem;
}

.page-about .about-contact__info {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.page-about .about-contact__info-item {
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 0.9rem;
  color: var(--color-text-on-dark, #FFFFFF);
}

.page-about .about-contact__note {
  font-family: var(--font-secondary, 'Noto Sans SC', sans-serif);
  font-size: 0.8rem;
  color: var(--color-text-secondary, #B0B0B0);
  font-style: italic;
  margin: 0 0 1.25rem;
}

.page-about .about-contact__btn {
  display: inline-block;
}

/* ---------- 响应式：平板及以上 ---------- */
@media (min-width: 600px) {
  .page-about .about-hero {
    padding: 4rem 2rem 3rem;
  }

  .page-about .about-hero__logo-box {
    width: 140px;
    height: 140px;
  }

  .page-about .about-hero__logo {
    width: 120px;
    height: 120px;
  }

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

  .page-about .about-hero__annotation {
    font-size: 1rem;
    margin-right: 1rem;
  }

  .page-about .about-story__inner {
    flex-direction: row;
    align-items: flex-start;
  }

  .page-about .about-story__fact-card {
    width: 340px;
    flex-shrink: 0;
  }

  .page-about .about-values__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .page-about .about-culture__inner {
    flex-direction: row;
    align-items: center;
  }

  .page-about .about-culture__img-wrap {
    width: 400px;
  }

  .page-about .about-contact__info {
    flex-direction: row;
    justify-content: center;
    gap: 2rem;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 5rem 2rem 4rem;
  }

  .page-about .about-hero__title {
    font-size: 3.5rem;
  }

  .page-about .about-story,
  .page-about .about-values,
  .page-about .about-culture,
  .page-about .about-contact {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .page-about .about-story__fact-card {
    width: 380px;
  }

  .page-about .about-values__grid {
    gap: 2rem;
  }

  .page-about .about-culture__img-wrap {
    width: 480px;
  }
}

/* ---------- 大桌面 ---------- */
@media (min-width: 1200px) {
  .page-about .about-hero__title {
    font-size: 4rem;
  }

  .page-about .about-story__fact-card {
    width: 420px;
  }

  .page-about .about-culture__img-wrap {
    width: 540px;
  }
}