.page-about {
  background: #F5E6CC; /* 暖纸色背景 */
  color: #0D0D0D;
  font-family: var(--font-body, 'Noto Sans SC', system-ui, sans-serif);
  padding: 2rem 1.5rem 4rem;
  position: relative;
  z-index: 1;
  background-image: url({zhanqunpic:h:1080w:1920});
  background-size: cover;
  background-position: center;
  background-blend-mode: overlay;
  background-attachment: fixed;
}

/* 面包屑 */
.breadcrumb {
  font-size: 0.875rem;
  color: var(--color-text-soft, #A0A0A0);
  margin-bottom: 2rem;
}
.breadcrumb ol {
  list-style: none;
  padding: 0;
  display: flex;
  gap: 0.5rem;
}
.breadcrumb a {
  color: var(--color-accent, #FF4500);
  text-decoration: underline;
}
.breadcrumb a:hover {
  text-decoration: none;
}

/* 页面标题 */
.page-title {
  font-family: var(--font-heading, 'Orbitron', sans-serif);
  font-weight: 900;
  font-size: 2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #0D0D0D;
  margin: 0 0 1.5rem;
  line-height: 1.2;
}

/* 视觉焦点：大字号“凤凰” */
.story-focus {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2.5rem;
}
.story-focus__char {
  font-family: var(--font-heading, 'Orbitron', sans-serif);
  font-weight: 900;
  font-size: 4rem;
  color: var(--color-gold, #FFD700);
  line-height: 1;
  text-shadow: 0 0 8px rgba(255, 215, 0, 0.3);
}

/* 主题筛选按钮组 */
.filter-bar {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}
.filter-bar .btn-outline {
  background: transparent;
  border: 2px solid var(--color-accent, #FF4500);
  color: var(--color-accent, #FF4500);
  padding: 0.5rem 1.25rem;
  font-family: var(--font-heading, 'Orbitron', sans-serif);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}
.filter-bar .btn-outline.is-active,
.filter-bar .btn-outline:hover {
  background: var(--color-accent, #FF4500);
  color: #FFFFFF;
}

/* 章节通用 */
.section {
  margin-bottom: 4rem;
}
.section__inner {
  position: relative;
}

/* 章节编号 */
.section-number {
  font-family: var(--font-heading, 'Orbitron', sans-serif);
  font-weight: 900;
  font-size: 3.5rem;
  color: var(--color-accent, #FF4500);
  display: block;
  line-height: 1;
  margin-bottom: 0.25rem;
  opacity: 0.8;
}

/* 章节标题 */
.section-title {
  font-family: var(--font-heading, 'Orbitron', sans-serif);
  font-weight: 700;
  font-size: 1.75rem;
  color: #0D0D0D;
  margin: 0 0 1rem;
  letter-spacing: 0.02em;
}

/* 纵向小注释 */
.meta-info.vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 0.75rem;
  color: var(--color-text-soft, #A0A0A0);
  position: absolute;
  right: 0;
  top: 0.5rem;
  letter-spacing: 0.1em;
}

/* 段落 */
.section p {
  font-size: 1rem;
  line-height: 1.6;
  max-width: 70ch;
  margin: 0 0 1.5rem;
}

/* 图片 */
.story-image {
  display: block;
  margin: 1.5rem auto 0;
  max-width: 100%;
  height: auto;
  border: 2px solid var(--color-gold, #FFD700);
  border-radius: 4px;
}
.image-wrapper {
  margin-top: 1.5rem;
}
.image-wrapper img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
  border: 2px solid var(--color-accent, #FF4500);
  border-radius: 4px;
}

/* 印刷边框 */
.print-border {
  border: none;
  border-top: 3px solid var(--color-gold, #FFD700);
  margin: 0 0 3rem;
  width: 80px;
}

/* 页码标签 */
.page-code {
  display: inline-block;
  font-family: var(--font-heading, 'Orbitron', sans-serif);
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--color-text-soft, #A0A0A0);
  letter-spacing: 0.1em;
  border: 1px solid currentColor;
  padding: 0.25rem 0.75rem;
  margin-top: 2rem;
}

/* 站内链接 */
.section a {
  color: var(--color-accent, #FF4500);
  text-decoration: underline;
  transition: color 0.3s;
}
.section a:hover {
  color: var(--color-gold, #FFD700);
}

/* 移动端优先调整 */
@media (max-width: 640px) {
  .page-about {
    padding: 1.5rem 1rem 3rem;
  }
  .page-title {
    font-size: 1.75rem;
  }
  .story-focus__char {
    font-size: 3rem;
  }
  .section-number {
    font-size: 2.5rem;
  }
  .section-title {
    font-size: 1.25rem;
  }
  .meta-info.vertical {
    position: static;
    writing-mode: horizontal-tb;
    margin-left: 0.5rem;
  }
}

/* 桌面宽度约束 */
@media (min-width: 960px) {
  .page-about {
    max-width: 960px;
    margin: 0 auto;
    padding: 3rem 2rem 5rem;
  }
  .story-focus__char {
    font-size: 6rem;
  }
  .section-number {
    font-size: 5rem;
  }
}