/* ===== 品牌故事 · page-about 专属样式 ===== */
.page-about {
  --about-paper: rgba(244, 228, 193, 0.05);
  overflow-x: hidden;
  background: var(--c-navy);
  color: var(--c-cream);
}

/* ---- 首屏 ---- */
.page-about__hero {
  position: relative;
  padding-top: 28px;
  padding-bottom: 72px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-about__hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about__hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.28;
  filter: saturate(0.72) contrast(1.06);
}

.page-about__hero-grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(224, 198, 140, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(224, 198, 140, 0.06) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.page-about__hero-corner {
  position: absolute;
  z-index: 3;
  width: 28px;
  height: 28px;
  border: 0;
  border-color: var(--c-pale-gold);
  border-style: solid;
  opacity: 0.65;
  pointer-events: none;
}

.page-about__hero-corner--tl {
  top: 14px;
  left: 14px;
  border-width: 2px 0 0 2px;
}

.page-about__hero-corner--br {
  right: 14px;
  bottom: 14px;
  border-width: 0 2px 2px 0;
}

.page-about__hero-vertical {
  display: none;
  position: absolute;
  right: 20px;
  top: 50%;
  z-index: 3;
  transform: translateY(-50%) rotate(180deg);
  writing-mode: vertical-rl;
  font-size: 0.75rem;
  letter-spacing: 0.32em;
  color: var(--c-pale-gold);
  opacity: 0.55;
  pointer-events: none;
}

.page-about__hero-inner {
  position: relative;
  z-index: 2;
}

.page-about__title-block {
  max-width: 820px;
  margin: 56px 0 0;
}

.page-about__hero-kicker {
  margin: 0 0 14px;
  font-size: 0.8125rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-about__hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-pale-gold);
}

.page-about__meta-sep {
  color: var(--c-gold);
  opacity: 0.55;
}

/* ---- 章节标题 ---- */
.page-about .section-heading {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  align-items: end;
  margin-bottom: 36px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .section-heading__index {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
  padding: 4px 0 0;
}

.page-about .section-heading__title {
  margin: 4px 0 0;
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  letter-spacing: 0.01em;
}

.page-about .section-heading__rule {
  grid-column: 1 / -1;
  height: 1px;
  margin-top: 4px;
  background: linear-gradient(90deg, var(--c-gold) 0%, var(--line) 72%);
}

.page-about__section-tagline {
  margin: 0 0 4px;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-gold);
  opacity: 0.8;
}

/* ---- 导语 ---- */
.page-about__intro-note {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  max-width: 820px;
  margin-bottom: 8px;
  padding: 12px 0 8px;
}

.page-about__intro-note p {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--c-cream);
}

/* ---- 时间轴 ---- */
.page-about__timeline {
  position: relative;
  margin: 40px 0 56px;
  padding-left: 26px;
  border-left: 1px solid var(--line);
}

.page-about__timeline::after {
  content: "BRAND LEGACY";
  position: absolute;
  bottom: -12px;
  left: 0;
  font-size: 0.6875rem;
  letter-spacing: 0.28em;
  color: var(--c-gold);
  opacity: 0.5;
}

.page-about__timeline-item {
  position: relative;
  padding: 0 0 40px 22px;
}

.page-about__timeline-item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-gold);
  box-shadow: 0 0 0 3px rgba(201, 169, 106, 0.22);
}

.page-about__timeline-year {
  margin-bottom: 6px;
  font-family: var(--font-headline);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-gold);
}

.page-about__timeline-body h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--c-off-white);
}

.page-about__timeline-body p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(244, 228, 193, 0.82);
}

.page-about__text-link {
  display: inline-block;
  margin-top: 12px;
  padding-bottom: 2px;
  font-size: 0.9rem;
  color: var(--c-gold);
  text-decoration: none;
  border-bottom: 1px solid var(--c-gold);
  transition: color 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-about__text-link:hover {
  color: var(--c-pale-gold);
  border-color: var(--c-pale-gold);
}

/* ---- 叠层卡片 ---- */
.page-about__stack {
  position: relative;
  margin-top: 64px;
  padding-bottom: 24px;
}

.page-about__stack-card {
  position: relative;
  padding: 30px 26px;
  background-image:
    radial-gradient(var(--about-paper) 1px, transparent 1px),
    linear-gradient(145deg, rgba(27, 38, 59, 0.96), rgba(13, 27, 42, 0.92));
  background-size: 14px 14px, cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.page-about__stack-card::after {
  content: "";
  position: absolute;
  right: 8px;
  bottom: 8px;
  width: 48px;
  height: 48px;
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  pointer-events: none;
}

.page-about__stack-card--two {
  margin: -18px 0 0 20px;
}

.page-about__stack-card--three {
  margin: -18px 0 0 40px;
}

.page-about__stack-num {
  position: absolute;
  top: 20px;
  right: 20px;
  font-family: var(--font-headline);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(224, 198, 140, 0.15);
  pointer-events: none;
}

.page-about__stack-card .badge {
  display: inline-block;
  margin-bottom: 16px;
}

.page-about__stack-card h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  color: var(--c-off-white);
}

.page-about__stack-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: rgba(244, 228, 193, 0.8);
}

/* ---- 本地化章节 ---- */
.page-about__local {
  position: relative;
  background-color: var(--c-royal);
  background-image:
    linear-gradient(rgba(224, 198, 140, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(224, 198, 140, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about__local-grid {
  display: grid;
  align-items: start;
  gap: 36px;
}

.page-about__map-wrap {
  position: relative;
}

.page-about__map-wrap img,
.page-about__chart-block img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about__map-pin {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  padding: 6px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--c-cream);
  background: var(--c-crimson);
  border: 1px solid rgba(244, 228, 193, 0.4);
  border-radius: 16px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.32);
  cursor: default;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about__map-pin:hover {
  transform: scale(1.06);
  background: #9d1010;
}

.page-about__map-pin--taiyuan {
  top: 44%;
  left: 50%;
}

.page-about__map-pin--datong {
  top: 13%;
  left: 45%;
}

.page-about__map-pin--yuncheng {
  top: 80%;
  left: 58%;
}

.page-about__map-pop {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  white-space: nowrap;
  background: var(--c-royal);
  border: 1px solid var(--line);
  color: var(--c-cream);
  padding: 6px 10px;
  font-size: 0.75rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about__map-pin:hover .page-about__map-pop {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.page-about__service-content h3 {
  margin: 0 0 12px;
  font-size: 1.4rem;
  color: var(--c-gold);
}

.page-about__service-content > p {
  margin: 0 0 24px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(244, 228, 193, 0.85);
}

.page-about__service-list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
}

.page-about__service-list li {
  display: flex;
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about__service-list li:first-child {
  padding-top: 0;
}

.page-about__service-num {
  min-width: 34px;
  font-family: var(--font-headline);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-gold);
}

.page-about__service-text strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1rem;
  color: var(--c-off-white);
}

.page-about__service-text p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(244, 228, 193, 0.78);
}

/* ---- 测评章节 ---- */
.page-about__review-lead {
  max-width: 820px;
  margin-bottom: 32px;
}

.page-about__review-lead p {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.8;
  color: rgba(244, 228, 193, 0.88);
}

.page-about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 0 0 40px;
}

.page-about__stat {
  padding: 24px 10px 20px;
  text-align: center;
  background: linear-gradient(180deg, rgba(27, 38, 59, 0.92), rgba(13, 27, 42, 0.88));
  border-top: 2px solid var(--c-gold);
}

.page-about__stat-value {
  display: block;
  font-family: var(--font-headline);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-gold);
}

.page-about__stat-label {
  display: block;
  margin-top: 8px;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--c-cream);
  opacity: 0.85;
}

.page-about__chart-block {
  margin: 0 0 48px;
}

.page-about__review-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin: 0 0 40px;
}

.page-about__review-card {
  position: relative;
  flex: 1 1 100%;
  padding: 28px 24px 20px 32px;
  background: rgba(27, 38, 59, 0.58);
  border-left: 3px solid var(--c-gold);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.16);
}

.page-about__review-quote {
  position: absolute;
  top: 6px;
  left: 12px;
  font-family: var(--font-headline);
  font-size: 3.2rem;
  line-height: 1;
  color: var(--c-gold);
  opacity: 0.5;
  pointer-events: none;
}

.page-about__review-card p {
  margin: 0 0 16px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-cream);
}

.page-about__review-card footer {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--c-pale-gold);
}

.page-about__review-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ---- 桌面增强 ---- */
@media (min-width: 768px) {
  .page-about__hero {
    padding-top: 40px;
    padding-bottom: 112px;
  }

  .page-about__hero-corner--tl {
    top: 20px;
    left: 20px;
  }

  .page-about__hero-corner--br {
    right: 20px;
    bottom: 20px;
  }

  .page-about__hero-vertical {
    display: block;
    right: 28px;
    opacity: 0.7;
  }

  .page-about__title-block {
    margin-top: 96px;
  }

  .page-about__timeline {
    padding-left: 40px;
  }

  .page-about__timeline-item {
    padding-left: 30px;
  }

  .page-about__timeline-item::before {
    left: -45px;
  }

  .page-about__stack-card--two {
    margin: -24px 0 0 48px;
  }

  .page-about__stack-card--three {
    margin: -24px 0 0 96px;
  }

  .page-about__local-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
  }

  .page-about__review-card {
    flex: 1 1 calc(33.333% - 20px);
  }

  .page-about__review-card:nth-child(2) {
    margin-top: 32px;
  }

  .page-about__review-card:nth-child(3) {
    margin-top: 64px;
  }
}

@media (min-width: 1024px) {
  .page-about__title-block .title-block__title {
    font-size: clamp(2.8rem, 4.6vw, 3.9rem);
  }
}