.page-about {
  --about-gold-soft: rgba(212, 175, 55, 0.28);
  --about-gold-line: rgba(212, 175, 55, 0.5);
  --about-shadow: 0 12px 36px rgba(6, 19, 43, 0.14);
  padding: 0;
}

.page-about .about-section {
  padding: 2.2rem 1.25rem;
}

.page-about .about-section-inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

/* ===== 英雄区 ===== */
.page-about .about-hero {
  position: relative;
  color: var(--mist-white);
  overflow: hidden;
  background:
    radial-gradient(circle at 84% 16%, rgba(212, 175, 55, 0.2), transparent 34%),
    linear-gradient(135deg, var(--deep-navy), var(--royal-blue) 62%, #12305E);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(212, 175, 55, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, 0.07) 1px, transparent 1px);
  background-size: 42px 42px;
}

.page-about .about-hero-ornament {
  position: absolute;
  width: 120px;
  height: 120px;
  right: -20px;
  top: -20px;
  opacity: 0.7;
  transform: rotate(12deg);
  pointer-events: none;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 2.4rem 1.25rem 2rem;
}

.page-about .about-hero .breadcrumb {
  margin: 0 0 0.8rem;
  font-size: 0.88rem;
}

.page-about .about-hero .breadcrumb a {
  color: var(--pale-gold);
  text-decoration: none;
}

.page-about .about-hero .breadcrumb a:hover {
  color: #ffffff;
}

.page-about .about-hero .breadcrumb-sep {
  color: var(--antique-gold);
  margin: 0 0.35rem;
}

.page-about .about-hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--antique-gold);
  margin: 1.2rem 0 0.4rem;
}

.page-about .about-hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 6vw, 3.4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.04em;
  color: #ffffff;
  margin: 0;
  text-shadow: 0 2px 22px rgba(212, 175, 55, 0.28);
}

.page-about .about-hero-sub {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2.4vw, 1.35rem);
  font-weight: 600;
  color: var(--pale-gold);
  margin: 0.35rem 0 1rem;
}

.page-about .about-hero-summary {
  max-width: 46em;
  font-size: 0.98rem;
  line-height: 1.85;
  color: rgba(230, 233, 240, 0.88);
  margin: 0;
}

.page-about .about-hero-mark {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--about-gold-line);
  border-radius: 12px;
  background: var(--deep-navy);
  box-shadow: 0 18px 44px rgba(6, 19, 43, 0.42);
}

/* ===== 各分区通用标题 ===== */
.page-about .about-heading-row {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  border-bottom: 1px solid var(--about-gold-soft);
  padding-bottom: 0.8rem;
  margin-bottom: 1.6rem;
}

.page-about .section-index {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--plum-red);
  white-space: nowrap;
}

.page-about .about-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.45rem, 3.4vw, 2.2rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--royal-blue);
  margin: 0;
}

/* ===== 品牌简介 ===== */
.page-about .about-brief-grid {
  display: grid;
  gap: 2rem;
}

.page-about .about-brief-copy p {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ink-blue);
  margin: 0 0 1rem;
}

.page-about .about-brief-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.4rem;
}

.page-about .about-facts {
  margin: 0;
  padding: 1.4rem 1.4rem;
  background: var(--deep-navy);
  border: 1px solid var(--about-gold-line);
  border-radius: 10px;
}

.page-about .about-facts-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem 0.8rem;
}

.page-about .fact-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.55rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--antique-gold);
}

.page-about .fact-key {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--mist-white);
  margin-top: 0.2rem;
}

/* ===== 发展历程时间线 ===== */
.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 1.5rem;
  margin-top: 2.4rem;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 84px;
  width: 2px;
  background: linear-gradient(to bottom, rgba(212, 175, 55, 0), rgba(212, 175, 55, 0.65) 12%, rgba(212, 175, 55, 0.65) 88%, rgba(212, 175, 55, 0));
}

.page-about .timeline-item {
  display: grid;
  grid-template-columns: 72px 24px 1fr;
  column-gap: 12px;
  align-items: start;
}

.page-about .timeline-year {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--royal-blue);
  text-align: right;
  padding-top: 0.5rem;
}

.page-about .timeline-tag {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--antique-gold);
  margin-top: 0.35rem;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.page-about .timeline-item:hover .timeline-tag,
.page-about .timeline-year:hover .timeline-tag {
  opacity: 1;
  transform: translateY(0);
}

.page-about .timeline-dot {
  width: 12px;
  height: 12px;
  margin-top: 12px;
  border-radius: 50%;
  border: 2px solid var(--antique-gold);
  background: var(--royal-blue);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.12);
}

.page-about .timeline-card {
  background: var(--card-bg);
  border: 1px solid rgba(212, 175, 55, 0.38);
  border-radius: 8px;
  padding: 1rem 1.1rem;
  box-shadow: 0 4px 14px rgba(6, 19, 43, 0.06);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.page-about .timeline-card:hover {
  border-color: var(--antique-gold);
  box-shadow: var(--about-shadow);
  transform: translateY(-2px);
}

.page-about .timeline-card h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--royal-blue);
  margin: 0 0 0.5rem;
}

.page-about .timeline-card p {
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--ink-blue);
  margin: 0;
}

/* ===== 资质与认证 ===== */
.page-about .credentials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
}

.page-about .credential-card {
  position: relative;
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid rgba(212, 175, 55, 0.45);
  border-radius: 10px;
  padding: 1.4rem 1.3rem 1.3rem;
  box-shadow: 0 6px 18px rgba(6, 19, 43, 0.05);
}

.page-about .credential-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--antique-gold), var(--pale-gold));
}

.page-about .credential-symbol {
  width: 2.2rem;
  height: 2.2rem;
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  color: var(--antique-gold);
  border: 1px solid rgba(212, 175, 55, 0.5);
  border-radius: 50%;
  margin-bottom: 0.9rem;
}

.page-about .credential-card h3 {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--royal-blue);
  margin: 0 0 0.5rem;
}

.page-about .credential-card p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--ink-blue);
  margin: 0;
}

.page-about .credential-card--partner {
  background: linear-gradient(135deg, var(--deep-navy), var(--royal-blue));
  border-color: rgba(212, 175, 55, 0.6);
}

.page-about .credential-card--partner .credential-symbol {
  color: var(--pale-gold);
  border-color: rgba(212, 175, 55, 0.55);
}

.page-about .credential-card--partner h3 {
  color: var(--pale-gold);
}

.page-about .credential-card--partner p {
  color: var(--mist-white);
}

/* ===== 服务范围说明 ===== */
.page-about .about-service {
  background:
    linear-gradient(rgba(212, 175, 55, 0.06), rgba(212, 175, 55, 0.06)),
    var(--royal-blue);
  color: var(--mist-white);
}

.page-about .about-service .about-heading-row {
  border-bottom-color: rgba(212, 175, 55, 0.35);
}

.page-about .about-service .section-index {
  color: var(--antique-gold);
}

.page-about .about-service .about-heading {
  color: var(--mist-white);
}

.page-about .about-service-grid {
  display: grid;
  gap: 1.8rem;
  align-items: center;
}

.page-about .about-service-figure,
.page-about .about-culture-figure {
  margin: 0;
}

.page-about .about-service-figure img,
.page-about .about-culture-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--about-gold-line);
  box-shadow: 0 14px 34px rgba(6, 19, 43, 0.16);
}

.page-about .about-service-body > p {
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--mist-white);
  margin: 0 0 1.2rem;
}

.page-about .service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-about .service-list li {
  position: relative;
  padding-left: 1.3rem;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--mist-white);
}

.page-about .service-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 14px;
  height: 2px;
  background: var(--antique-gold);
}

.page-about .service-list strong {
  color: var(--pale-gold);
  font-weight: 600;
}

.page-about .about-trust {
  margin-top: 1.5rem;
  padding: 1rem 1.2rem;
  border-radius: 8px;
  border-left: 3px solid var(--antique-gold);
  background: rgba(6, 19, 43, 0.38);
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--mist-white);
}

/* ===== 团队与文化 ===== */
.page-about .about-culture-grid {
  display: grid;
  gap: 1.8rem;
  align-items: center;
}

.page-about .about-culture-copy > p {
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--ink-blue);
  margin: 0 0 1rem;
}

.page-about .culture-points {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.7rem;
}

.page-about .culture-points li {
  background: var(--card-bg);
  border: 1px solid rgba(212, 175, 55, 0.35);
  border-radius: 8px;
  padding: 0.8rem 0.9rem;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ink-blue);
}

.page-about .culture-points strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.05em;
  color: var(--royal-blue);
  margin-bottom: 0.15rem;
}

/* ===== 尾部引导 ===== */
.page-about .about-next {
  background: linear-gradient(135deg, var(--deep-navy), var(--royal-blue));
  text-align: center;
  color: var(--mist-white);
}

.page-about .about-next .about-section-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
}

.page-about .about-next h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: #ffffff;
  margin: 0;
}

.page-about .about-next p {
  max-width: 40rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(230, 233, 240, 0.85);
  margin: 0 0 0.5rem;
}

.page-about .btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  justify-content: center;
}

/* ===== 响应式增强 ===== */
@media (min-width: 700px) {
  .page-about .about-section {
    padding: 3.2rem 2rem;
  }

  .page-about .about-hero-inner {
    padding: 3rem 2rem 2.4rem;
  }

  .page-about .about-facts-list {
    grid-template-columns: 1fr 1fr;
    gap: 1.4rem 1rem;
  }

  .page-about .credentials-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .credential-card--partner {
    grid-column: span 2;
  }

  .page-about .culture-points {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 860px) {
  .page-about .about-hero-inner {
    grid-template-columns: 1fr 340px;
    align-items: center;
    gap: 2.5rem;
    padding: 4rem 2.5rem 3.2rem;
  }

  .page-about .about-hero-ornament {
    width: 190px;
    height: 190px;
    right: -30px;
    top: -30px;
  }

  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .timeline-item {
    grid-template-columns: 1fr 64px 1fr;
    column-gap: 20px;
  }

  .page-about .timeline-year {
    grid-column: 1;
    grid-row: 1;
    text-align: right;
    align-self: center;
  }

  .page-about .timeline-dot {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
    align-self: center;
  }

  .page-about .timeline-card {
    grid-column: 3;
    grid-row: 1;
  }

  .page-about .timeline-item:nth-child(even) .timeline-year {
    grid-column: 3;
    grid-row: 1;
    text-align: left;
  }

  .page-about .timeline-item:nth-child(even) .timeline-dot {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .timeline-item:nth-child(even) .timeline-card {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .about-brief-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3.5rem;
    align-items: start;
  }

  .page-about .about-service-grid {
    grid-template-columns: 5fr 7fr;
    gap: 2.5rem;
  }

  .page-about .about-culture-grid {
    grid-template-columns: 6fr 6fr;
    gap: 2.5rem;
  }
}

@media (min-width: 1000px) {
  .page-about .credentials-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .credential-card--partner {
    grid-column: span 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}