.page-about {
  --section-gap: 72px;
  --gold: #FFD700;
  --accent: #E94560;
  --primary: #1A1A2E;
  --cream: #F5E6CC;
  --dark: #333333;
  --body-font: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  --heading-font: 'Montserrat', 'Helvetica Neue', 'Arial Black', sans-serif;
  --max-w: 1200px;
  --gap: 24px;
}

/* 移动端优先 — 窄屏基础 */
.page-about {
  background: var(--primary);
  color: var(--cream);
  font-family: var(--body-font);
  line-height: 1.8;
  overflow-x: hidden;
}

.page-about .container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 20px;
}

/* 面包屑 */
.page-about .breadcrumb {
  padding: 20px 0 0;
  font-size: 0.85rem;
  color: #ccc;
  letter-spacing: 0.5px;
}
.page-about .breadcrumb__sep {
  margin: 0 8px;
}
.page-about .breadcrumb__current {
  color: var(--gold);
  font-weight: 600;
}

/* 章节标题 */
.page-about .section__title.page-about__section-title {
  font-family: var(--heading-font);
  font-weight: 900;
  font-size: 2rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--gold);
  margin-bottom: 24px;
  position: relative;
  display: inline-block;
}
.page-about .section__title.page-about__section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--gold);
  margin-top: 6px;
  opacity: 0.6;
}

/* 正文 */
.page-about__text {
  font-size: 1rem;
  color: #ddd;
  margin-bottom: 20px;
  max-width: 640px;
}

/* 图片公共 */
.page-about__image {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

.page-about__figure {
  margin: 0;
}

/* 英雄区 */
.page-about__hero {
  padding: 60px 0 40px;
}
.page-about__hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}
.page-about__hero-glyph {
  width: 100px;
  height: 100px;
  animation: page-about-spin 24s linear infinite;
  filter: drop-shadow(0 0 12px rgba(255,215,0,0.25));
}
@keyframes page-about-spin {
  to { transform: rotate(360deg); }
}
.page-about__hero-label {
  font-family: var(--heading-font);
  font-size: 0.8rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gold);
  opacity: 0.7;
  margin-bottom: 8px;
}
.page-about__hero-heading {
  font-family: var(--heading-font);
  font-weight: 900;
  font-size: 2.5rem;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #fff;
  margin-bottom: 16px;
}
.page-about__hero-desc {
  font-size: 1.1rem;
  color: #bbb;
  max-width: 540px;
  margin: 0 auto;
}

/* 品牌简介 */
.page-about__intro {
  padding: var(--section-gap) 0;
}
.page-about__intro-layout {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}
.page-about__intro-figure {
  order: -1;
}

/* 核心功能 */
.page-about__core {
  padding: var(--section-gap) 0;
  background: linear-gradient(135deg, #0F3460 0%, #1A1A2E 100%);
  border-radius: 0;
}
.page-about__core-grid {
  list-style: none;
  padding: 0;
  margin: 0 0 40px;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}
.page-about__core-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: rgba(245,230,204,0.06);
  border-left: 3px solid var(--gold);
  transition: background 0.25s ease;
}
.page-about__core-item:hover {
  background: rgba(245,230,204,0.12);
}
.page-about__core-num {
  font-family: 'Oswald', 'Impact', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  min-width: 48px;
}
.page-about__core-heading {
  font-family: var(--heading-font);
  font-weight: 700;
  font-size: 1.15rem;
  color: #fff;
  margin-bottom: 6px;
}
.page-about__core-desc {
  font-size: 0.92rem;
  color: #ccc;
}

/* 服务特色 */
.page-about__feature {
  padding: var(--section-gap) 0;
}
.page-about__feature-layout {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

/* 用户承诺 */
.page-about__promise {
  padding: var(--section-gap) 0;
  background: linear-gradient(180deg, #0F3460 0%, transparent 100%);
}
.page-about__promise-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}
.page-about__promise-card {
  padding: 28px 24px;
  background: rgba(245,230,204,0.05);
  border-radius: 6px;
  border: 1px solid rgba(255,215,0,0.15);
}
.page-about__promise-icon {
  display: block;
  font-size: 1.8rem;
  color: var(--gold);
  margin-bottom: 12px;
}
.page-about__promise-text {
  font-size: 0.95rem;
  color: #ddd;
}

/* CTA */
.page-about__cta {
  padding: 48px 0 72px;
  text-align: center;
}
.page-about__cta-text {
  font-size: 1.25rem;
  color: #fff;
  margin-bottom: 24px;
}
.page-about__cta-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.page-about .btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 32px;
  font-family: var(--heading-font);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  border: 2px solid transparent;
  border-radius: 4px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  transition: background 0.25s, border-color 0.25s;
  cursor: pointer;
}
.page-about .btn:hover {
  background: #c7304f;
}
.page-about .btn--gold {
  background: transparent;
  border-color: var(--gold);
  color: var(--gold);
}
.page-about .btn--gold:hover {
  background: var(--gold);
  color: var(--primary);
}

/* 桌面 ≥768px */
@media (min-width: 768px) {
  .page-about__hero-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
  .page-about__hero-glyph {
    width: 140px;
    height: 140px;
  }
  .page-about__hero-heading {
    font-size: 3.5rem;
  }
  .page-about__hero-desc {
    margin: 0;
  }

  .page-about__intro-layout {
    flex-direction: row;
    align-items: center;
    gap: 48px;
  }
  .page-about__intro-content {
    flex: 1;
  }
  .page-about__intro-figure {
    order: 0;
    flex: 0 0 50%;
  }

  .page-about__core-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about__core-item {
    flex-direction: column;
    border-left: none;
    border-top: 3px solid var(--gold);
    padding: 24px;
  }

  .page-about__feature-layout {
    flex-direction: row;
    align-items: center;
    gap: 48px;
  }
  .page-about__feature-text {
    flex: 1;
  }
  .page-about__feature-figure {
    flex: 0 0 45%;
  }

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

  .page-about .section__title.page-about__section-title {
    font-size: 2.5rem;
  }
}

/* 桌面大屏 ≥1024px */
@media (min-width: 1024px) {
  .page-about__hero {
    padding: 80px 0 60px;
  }
  .page-about__hero-heading {
    font-size: 4.2rem;
  }
  .page-about__hero-glyph {
    width: 180px;
    height: 180px;
  }
}