/* ===== 品牌故事页专属样式 ===== */
.page-about {
  --ab-gold: #D4AF37;
  --ab-primary: #E60012;
  --ab-black: #1A1A1A;
  --ab-deep-teal: #0D3B4F;
  --ab-wine: #7B241C;
  --ab-light-gray: #F2F2F2;
  --ab-white: #FFFFFF;
  --ab-font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ab-radius-sm: 4px;
  --ab-radius-md: 8px;
  --ab-radius-lg: 16px;
  --ab-trans: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  display: block;
  width: 100%;
}

/* ---------- 面包屑 ---------- */
.page-about .about-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.375rem 0.5rem;
  padding: 1rem 1.25rem 0;
  font-family: var(--ab-font);
  font-size: 0.8125rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.6);
  background: var(--ab-black);
  max-width: 100%;
  margin: 0 auto;
}

.page-about .about-breadcrumb__link {
  color: var(--ab-gold);
  text-decoration: none;
  transition: color var(--ab-trans);
  letter-spacing: 0.02em;
}

.page-about .about-breadcrumb__link:hover,
.page-about .about-breadcrumb__link:focus-visible {
  color: var(--ab-white);
  text-decoration: underline;
}

.page-about .about-breadcrumb__sep {
  color: rgba(255, 255, 255, 0.35);
  font-size: 0.75rem;
}

.page-about .about-breadcrumb__current {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 400;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  background: linear-gradient(135deg, var(--ab-primary) 0%, #B8000E 70%, var(--ab-black) 100%);
  padding: 3.5rem 1.25rem 4rem;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(212, 175, 55, 0.12) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 90% 20%, rgba(255, 255, 255, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

.page-about .about-hero__title {
  font-family: var(--ab-font);
  font-size: clamp(2.8rem, 12vw, 5.5rem);
  font-weight: 200;
  letter-spacing: 0.12em;
  color: var(--ab-white);
  margin: 0 0 0.75rem;
  line-height: 1.1;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
}

.page-about .about-hero__subtitle {
  font-family: var(--ab-font);
  font-size: clamp(1.1rem, 3.5vw, 1.75rem);
  font-weight: 300;
  color: rgba(255, 255, 255, 0.92);
  margin: 0 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
}

.page-about .about-hero__subtitle .text-gold {
  font-weight: 400;
  letter-spacing: 0.04em;
}

.page-about .about-hero__subtitle-sm {
  font-size: 0.85em;
  opacity: 0.8;
  letter-spacing: 0.06em;
}

.page-about .about-hero__desc {
  font-family: var(--ab-font);
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  font-weight: 300;
  color: rgba(255, 255, 255, 0.78);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
  letter-spacing: 0.02em;
}

/* ---------- 品牌缘起 / 时间线 ---------- */
.page-about .about-origin {
  background: var(--ab-light-gray);
  padding: 3rem 1.25rem 3.5rem;
  position: relative;
}

.page-about .about-origin__heading {
  text-align: center;
  font-family: var(--ab-font);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 200;
  letter-spacing: 0.1em;
  color: var(--ab-black);
  margin: 0 0 2.5rem;
  position: relative;
}

.page-about .about-origin__heading::after {
  content: "";
  display: block;
  width: 60px;
  height: 2px;
  background: var(--ab-gold);
  margin: 0.75rem auto 0;
}

.page-about .about-timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
  padding-left: 2rem;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 0.4375rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--ab-gold), var(--ab-primary), var(--ab-gold));
  opacity: 0.6;
  border-radius: 2px;
}

.page-about .timeline-node {
  position: relative;
  margin-bottom: 2.5rem;
  padding-left: 1.75rem;
}

.page-about .timeline-node:last-child {
  margin-bottom: 0;
}

.page-about .timeline-node__dot {
  position: absolute;
  left: -2rem;
  top: 0.35rem;
  width: 0.875rem;
  height: 0.875rem;
  border-radius: 50%;
  background: var(--ab-gold);
  border: 2px solid var(--ab-white);
  box-shadow: 0 0 0 2px var(--ab-gold), 0 2px 8px rgba(212, 175, 55, 0.3);
  z-index: 1;
  transition: transform var(--ab-trans), box-shadow var(--ab-trans);
}

.page-about .timeline-node:hover .timeline-node__dot {
  transform: scale(1.3);
  box-shadow: 0 0 0 3px var(--ab-gold), 0 4px 16px rgba(212, 175, 55, 0.45);
}

.page-about .timeline-node__body {
  background: var(--ab-white);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-left: 3px solid var(--ab-gold);
  border-radius: 0 var(--ab-radius-md) var(--ab-radius-md) 0;
  padding: 1.25rem 1.5rem 1.25rem 1.25rem;
  transition: box-shadow var(--ab-trans), transform var(--ab-trans);
  position: relative;
}

.page-about .timeline-node:hover .timeline-node__body {
  box-shadow: 0 4px 24px rgba(212, 175, 55, 0.15), 0 1px 4px rgba(0, 0, 0, 0.06);
  transform: translateX(4px);
}

.page-about .timeline-node__title {
  font-family: var(--ab-font);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ab-black);
  margin: 0 0 0.35rem;
  letter-spacing: 0.04em;
}

.page-about .timeline-node__brief {
  font-family: var(--ab-font);
  font-size: 0.95rem;
  font-weight: 300;
  color: #444;
  line-height: 1.6;
  margin: 0 0 0.5rem;
}

.page-about .timeline-node__detail {
  font-family: var(--ab-font);
  font-size: 0.85rem;
  font-weight: 300;
  color: #777;
  line-height: 1.7;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--ab-trans), opacity var(--ab-trans), margin var(--ab-trans);
  opacity: 0;
  margin: 0;
}

.page-about .timeline-node:hover .timeline-node__detail {
  max-height: 150px;
  opacity: 1;
  margin-top: 0.6rem;
}

.page-about .timeline-node__tag {
  display: inline-block;
  font-family: var(--ab-font);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ab-white);
  background: var(--ab-primary);
  padding: 0.15rem 0.7rem;
  border-radius: var(--ab-radius-sm);
  margin-top: 0.5rem;
  text-transform: uppercase;
}

.page-about .about-origin__image {
  max-width: 700px;
  margin: 2.5rem auto 0;
  border-radius: var(--ab-radius-md);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.15);
}

.page-about .about-origin__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 1000 / 600;
}

/* ---------- 核心价值观 ---------- */
.page-about .about-values {
  background: var(--ab-deep-teal);
  padding: 3rem 1.25rem 3.5rem;
  position: relative;
  color: var(--ab-white);
}

.page-about .about-values::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--ab-gold), var(--ab-primary), var(--ab-gold));
}

.page-about .about-values__heading {
  text-align: center;
  font-family: var(--ab-font);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 200;
  letter-spacing: 0.1em;
  color: var(--ab-white);
  margin: 0 0 2rem;
}

.page-about .about-values__heading::after {
  content: "";
  display: block;
  width: 60px;
  height: 2px;
  background: var(--ab-gold);
  margin: 0.75rem auto 0;
}

.page-about .about-values__switcher {
  max-width: 800px;
  margin: 0 auto;
}

.page-about .values-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.page-about .values-tab {
  font-family: var(--ab-font);
  font-size: 0.9375rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  padding: 0.5rem 1.4rem;
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: 100px;
  transition: all var(--ab-trans);
  letter-spacing: 0.04em;
  background: transparent;
}

.page-about .values-tab:hover,
.page-about .values-tab:focus-visible {
  color: var(--ab-gold);
  border-color: var(--ab-gold);
  background: rgba(212, 175, 55, 0.08);
}

.page-about .values-tab:target,
.page-about .values-tab:focus-visible {
  outline: 2px solid var(--ab-gold);
  outline-offset: 2px;
}

/* 用 :target 高亮当前标签 —— 通过相邻面板的 :target 反向关联标签较复杂，改用面板高亮 */
.page-about .values-panels {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-about .values-panel {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(212, 175, 55, 0.12);
  border-radius: var(--ab-radius-md);
  padding: 1.5rem 1.5rem 1.5rem 1.75rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: background var(--ab-trans), border-color var(--ab-trans), box-shadow var(--ab-trans);
  scroll-margin-top: 5rem;
}

.page-about .values-panel:target {
  background: rgba(212, 175, 55, 0.1);
  border-color: var(--ab-gold);
  box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.2), 0 8px 32px rgba(0, 0, 0, 0.2);
}

.page-about .values-panel__num {
  font-family: var(--ab-font);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--ab-gold);
  opacity: 0.5;
  flex-shrink: 0;
  min-width: 2.2rem;
  letter-spacing: -0.02em;
}

.page-about .values-panel__content {
  flex: 1;
  min-width: 0;
}

.page-about .values-panel__title {
  font-family: var(--ab-font);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--ab-white);
  margin: 0 0 0.4rem;
  letter-spacing: 0.04em;
}

.page-about .values-panel__text {
  font-family: var(--ab-font);
  font-size: 0.925rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.7;
  margin: 0 0 0.5rem;
}

.page-about .values-panel__meta {
  font-family: var(--ab-font);
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--ab-gold);
  opacity: 0.75;
  letter-spacing: 0.03em;
  padding-top: 0.4rem;
  border-top: 1px solid rgba(212, 175, 55, 0.15);
}

.page-about .about-values__image {
  max-width: 600px;
  margin: 2.5rem auto 0;
  border-radius: var(--ab-radius-md);
  overflow: hidden;
  border: 1px solid rgba(212, 175, 55, 0.12);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.page-about .about-values__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 800 / 500;
}

/* ---------- 新疆情结 ---------- */
.page-about .about-xinjiang {
  background: var(--ab-wine);
  padding: 3rem 1.25rem 3.5rem;
  position: relative;
  overflow: hidden;
  color: var(--ab-white);
}

.page-about .about-xinjiang::before {
  content: "✦";
  position: absolute;
  right: -2rem;
  top: -1rem;
  font-size: 18rem;
  color: rgba(212, 175, 55, 0.04);
  line-height: 1;
  pointer-events: none;
  transform: rotate(15deg);
}

.page-about .about-xinjiang::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--ab-gold) 0, var(--ab-gold) 20px, transparent 20px, transparent 40px);
}

.page-about .about-xinjiang__heading {
  text-align: center;
  font-family: var(--ab-font);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 200;
  letter-spacing: 0.1em;
  color: var(--ab-white);
  margin: 0 0 2rem;
  position: relative;
  z-index: 1;
}

.page-about .about-xinjiang__heading::after {
  content: "";
  display: block;
  width: 60px;
  height: 2px;
  background: var(--ab-gold);
  margin: 0.75rem auto 0;
}

.page-about .about-xinjiang__inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

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

.page-about .about-xinjiang__p {
  font-family: var(--ab-font);
  font-size: 1rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin: 0 0 1rem;
  letter-spacing: 0.02em;
}

.page-about .about-xinjiang__p:last-of-type {
  margin-bottom: 1.25rem;
}

.page-about .about-xinjiang__marks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .about-xinjiang__mark {
  font-family: var(--ab-font);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--ab-gold);
  border: 1px solid rgba(212, 175, 55, 0.35);
  border-radius: 100px;
  padding: 0.2rem 1rem;
  background: rgba(212, 175, 55, 0.07);
  text-transform: uppercase;
}

.page-about .about-xinjiang__visual {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
}

.page-about .about-xinjiang__image-wrap {
  width: 100%;
  max-width: 320px;
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  overflow: hidden;
  border: 3px solid var(--ab-gold);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  aspect-ratio: 1 / 1;
}

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

/* ---------- 内链区域 ---------- */
.page-about .about-links {
  background: var(--ab-black);
  padding: 3rem 1.25rem 3.5rem;
  color: var(--ab-white);
}

.page-about .about-links__heading {
  text-align: center;
  font-family: var(--ab-font);
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 200;
  letter-spacing: 0.1em;
  color: var(--ab-white);
  margin: 0 0 2rem;
}

.page-about .about-links__heading::after {
  content: "";
  display: block;
  width: 50px;
  height: 2px;
  background: var(--ab-gold);
  margin: 0.6rem auto 0;
}

.page-about .about-links__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  max-width: 700px;
  margin: 0 auto;
}

.page-about .about-links__card {
  flex: 1 1 180px;
  max-width: 220px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.5rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(212, 175, 55, 0.12);
  border-radius: var(--ab-radius-md);
  text-decoration: none;
  transition: all var(--ab-trans);
}

.page-about .about-links__card:hover,
.page-about .about-links__card:focus-visible {
  background: rgba(212, 175, 55, 0.08);
  border-color: var(--ab-gold);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.page-about .about-links__card-icon {
  font-size: 1.6rem;
  color: var(--ab-gold);
  margin-bottom: 0.5rem;
  line-height: 1;
}

.page-about .about-links__card-label {
  font-family: var(--ab-font);
  font-size: 1rem;
  font-weight: 500;
  color: var(--ab-white);
  letter-spacing: 0.04em;
  margin-bottom: 0.3rem;
}

.page-about .about-links__card-desc {
  font-family: var(--ab-font);
  font-size: 0.8rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.5;
}

/* ---------- 桌面端增强 ---------- */
@media (min-width: 768px) {
  .page-about .about-breadcrumb {
    padding: 1.25rem 2rem 0;
    max-width: var(--max-width, 1200px);
  }

  .page-about .about-hero {
    padding: 5rem 2rem 6rem;
  }

  .page-about .about-origin {
    padding: 4rem 2rem 5rem;
  }

  .page-about .about-origin__heading {
    margin-bottom: 3.5rem;
  }

  .page-about .about-timeline {
    padding-left: 2.5rem;
  }

  .page-about .timeline-node {
    padding-left: 2rem;
    margin-bottom: 3rem;
  }

  .page-about .timeline-node__dot {
    left: -2.5rem;
    width: 1rem;
    height: 1rem;
  }

  .page-about .timeline-node__body {
    padding: 1.5rem 2rem 1.5rem 1.75rem;
  }

  .page-about .timeline-node__title {
    font-size: 1.4rem;
  }

  .page-about .timeline-node__brief {
    font-size: 1rem;
  }

  .page-about .about-values {
    padding: 4rem 2rem 5rem;
  }

  .page-about .about-values__heading {
    margin-bottom: 2.5rem;
  }

  .page-about .values-panels {
    gap: 1.5rem;
  }

  .page-about .values-panel {
    padding: 1.75rem 2rem 1.75rem 2.25rem;
  }

  .page-about .values-panel__num {
    font-size: 2.8rem;
    min-width: 2.8rem;
  }

  .page-about .about-xinjiang {
    padding: 4rem 2rem 5rem;
  }

  .page-about .about-xinjiang__inner {
    flex-direction: row;
    align-items: center;
    gap: 3rem;
  }

  .page-about .about-xinjiang__text {
    flex: 2;
  }

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

  .page-about .about-xinjiang__image-wrap {
    max-width: 280px;
  }

  .page-about .about-links {
    padding: 4rem 2rem 5rem;
  }

  .page-about .about-links__grid {
    gap: 1.5rem;
  }

  .page-about .about-links__card {
    flex: 1 1 200px;
    max-width: 240px;
    padding: 2rem 1.25rem;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 6rem 2rem 7rem;
  }

  .page-about .about-hero__title {
    font-size: 5.5rem;
  }

  .page-about .about-timeline {
    padding-left: 3rem;
  }

  .page-about .timeline-node {
    padding-left: 2.5rem;
  }

  .page-about .timeline-node__dot {
    left: -3rem;
  }

  .page-about .values-panels {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .page-about .values-panel {
    flex: 1 1 calc(33.333% - 1rem);
    min-width: 240px;
    flex-direction: column;
  }

  .page-about .values-panel__num {
    font-size: 2.4rem;
    min-width: unset;
    margin-bottom: 0.5rem;
  }

  .page-about .about-xinjiang__inner {
    gap: 4rem;
  }

  .page-about .about-xinjiang__image-wrap {
    max-width: 320px;
  }
}

/* ---------- 窄屏安全 ---------- */
@media (max-width: 480px) {
  .page-about .about-hero {
    padding: 2.5rem 1rem 3rem;
  }

  .page-about .about-hero__title {
    font-size: 2.8rem;
  }

  .page-about .about-hero__subtitle {
    font-size: 1rem;
    flex-direction: column;
    gap: 0.2rem;
  }

  .page-about .about-origin {
    padding: 2rem 1rem 2.5rem;
  }

  .page-about .about-timeline {
    padding-left: 1.5rem;
  }

  .page-about .timeline-node {
    padding-left: 1.25rem;
    margin-bottom: 1.75rem;
  }

  .page-about .timeline-node__dot {
    left: -1.5rem;
    width: 0.75rem;
    height: 0.75rem;
  }

  .page-about .timeline-node__body {
    padding: 1rem 1rem 1rem 0.875rem;
  }

  .page-about .about-values {
    padding: 2rem 1rem 2.5rem;
  }

  .page-about .values-panel {
    padding: 1.15rem 1rem 1.15rem 1.25rem;
    flex-direction: column;
  }

  .page-about .values-panel__num {
    font-size: 1.6rem;
    min-width: unset;
    margin-bottom: 0.25rem;
  }

  .page-about .about-xinjiang {
    padding: 2rem 1rem 2.5rem;
  }

  .page-about .about-xinjiang__image-wrap {
    max-width: 240px;
  }

  .page-about .about-links {
    padding: 2rem 1rem 2.5rem;
  }

  .page-about .about-links__card {
    flex: 1 1 140px;
    max-width: 100%;
  }
}