.page-about {
  --about-gold-glow: rgba(255, 200, 69, 0.16);
  display: block;
  min-height: 100vh;
  background: var(--c-white);
  color: var(--c-deep-blue);
}

/* ===== Hero 首屏 ===== */
.page-about .about-hero {
  position: relative;
  background:
    linear-gradient(135deg, rgba(255, 200, 69, 0.08) 0%, transparent 42%),
    radial-gradient(circle at 80% 18%, var(--about-gold-glow) 0%, transparent 46%),
    var(--c-deep-blue);
  color: var(--c-white);
  padding: 36px 0 72px;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -130px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 200, 69, 0.18) 0%, transparent 68%);
  pointer-events: none;
}

.page-about .about-hero-container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb {
  position: relative;
  z-index: 2;
  margin: 12px 0 64px;
  color: var(--c-text-muted);
}

.page-about .about-hero .breadcrumb a,
.page-about .about-hero .breadcrumb .breadcrumb-current {
  color: var(--c-text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-decoration: none;
}

.page-about .about-hero .breadcrumb a:hover {
  color: var(--c-gold);
}

.page-about .about-hero .breadcrumb .breadcrumb-sep {
  margin: 0 8px;
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.page-about .about-hero-eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.page-about .about-hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-gold);
  border: 1px solid rgba(255, 200, 69, 0.32);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  background: rgba(255, 200, 69, 0.06);
}

.page-about .about-hero-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-text-muted);
}

.page-about .about-hero-status .status-dot {
  background: var(--c-gold);
}

.page-about .about-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  font-weight: 700;
  line-height: 1.05;
  margin: 0 0 20px;
  color: var(--c-white);
  text-transform: uppercase;
}

.page-about .about-h1-dot {
  color: var(--c-gold);
}

.page-about .about-hero-lead {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-text-muted);
  max-width: 680px;
  margin: 0 0 32px;
  font-family: var(--font-body);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .about-hero-facts {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 14px;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(4px);
}

.page-about .about-fact-card {
  flex: 1;
  min-width: 0;
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(11, 29, 58, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about .about-fact-card-highlight {
  border-color: rgba(255, 200, 69, 0.45);
  background: linear-gradient(140deg, rgba(255, 200, 69, 0.18) 0%, rgba(11, 29, 58, 0.8) 100%);
}

.page-about .about-fact-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--c-gold);
  line-height: 1.1;
}

.page-about .about-fact-card-highlight .about-fact-num {
  color: var(--c-white);
}

.page-about .about-fact-label {
  display: block;
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--c-text-muted);
  font-family: var(--font-body);
}

.page-about .about-fact-arrow {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  color: var(--c-red);
  padding: 0 2px;
}

/* ===== 章节通用 ===== */
.page-about .about-story,
.page-about .about-milestones,
.page-about .about-capability,
.page-about .about-credential,
.page-about .about-reach {
  padding: 72px 0;
}

.page-about .about-section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 48px;
}

.page-about .about-section-head .section-number {
  font-size: 3rem;
  font-family: var(--font-mono);
  color: var(--c-gold);
  line-height: 1;
  font-weight: 700;
}

.page-about .about-head-text h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 6px;
  color: var(--c-deep-blue);
}

.page-about .about-section-sub {
  margin: 0;
  font-size: 0.92rem;
  color: var(--c-text-muted);
  font-family: var(--font-mono);
}

.page-about .about-section-head .rule-gold {
  width: 72px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--c-gold), var(--c-gold-deep));
  order: 3;
}

/* ===== 01 品牌故事 ===== */
.page-about .about-story {
  background: var(--c-surface);
}

.page-about .about-story-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-about .about-story-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .about-story-copy p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.9;
  color: #233A5E;
}

.page-about .about-story-lead {
  font-size: 1.08rem !important;
  font-weight: 600;
  color: var(--c-deep-blue) !important;
  border-left: 3px solid var(--c-gold);
  padding-left: 16px;
}

.page-about .about-story-quote {
  margin: 8px 0 0;
  padding: 18px 22px;
  border-radius: var(--radius-md);
  background: rgba(255, 200, 69, 0.1);
  border: 1px solid rgba(232, 163, 61, 0.28);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--c-deep-blue);
}

.page-about .about-more-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-family: var(--font-mono);
  color: var(--c-deep-blue);
  text-decoration: none;
  border-bottom: 2px solid rgba(255, 200, 69, 0.65);
  padding-bottom: 4px;
  width: fit-content;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.page-about .about-more-link:hover {
  border-color: var(--c-gold);
  color: var(--c-navy);
}

.page-about .about-story-visual {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-story-photo {
  aspect-ratio: 3 / 2;
}

.page-about .about-caption {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-text-muted);
}

.page-about .about-caption-index {
  color: var(--c-red);
  font-weight: 700;
  background: rgba(230, 57, 70, 0.08);
  border-radius: var(--radius-pill);
  padding: 4px 10px;
  border: 1px solid rgba(230, 57, 70, 0.2);
}

.page-about .about-caption-text {
  letter-spacing: 0.02em;
}

/* ===== 02 发展里程碑 ===== */
.page-about .about-milestones {
  background:
    radial-gradient(circle at 12% 18%, rgba(255, 200, 69, 0.08) 0%, transparent 34%),
    var(--c-deep-blue);
  color: var(--c-white);
}

.page-about .about-milestones .about-head-text h2 {
  color: var(--c-white);
}

.page-about .about-milestones .about-section-sub {
  color: rgba(168, 179, 197, 0.9);
}

.page-about .about-timeline {
  position: relative;
}

.page-about .about-tl-item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 18px;
  padding-bottom: 36px;
}

.page-about .about-tl-track {
  position: relative;
}

.page-about .about-tl-track::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: -36px;
  width: 3px;
  transform: translateX(-50%);
  border-radius: 4px;
  background: linear-gradient(180deg, rgba(255, 200, 69, 0.72) 0%, rgba(255, 200, 69, 0.1) 100%);
}

.page-about .about-tl-item:last-child .about-tl-track::before {
  bottom: 0;
}

.page-about .about-tl-dot {
  position: relative;
  z-index: 1;
  display: block;
  width: 14px;
  height: 14px;
  margin: 4px auto 0;
  border-radius: 50%;
  background: var(--c-deep-blue);
  border: 3px solid var(--c-gold);
  box-shadow: 0 0 0 4px rgba(255, 200, 69, 0.2);
}

.page-about .about-tl-item.is-key .about-tl-dot {
  border-color: var(--c-red);
  box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.24);
}

.page-about .about-tl-item.is-key .about-tl-year {
  color: var(--c-red);
}

.page-about .about-tl-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.page-about .about-tl-year {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
  display: block;
}

.page-about .about-tl-card {
  background: var(--c-white);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  box-shadow: var(--shadow-md);
}

.page-about .about-tl-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-deep-blue);
}

.page-about .about-tl-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: #233A5E;
}

.page-about .about-milestone-more {
  margin-top: 16px;
  text-align: right;
}

.page-about .about-more-link-ghost {
  color: var(--c-white);
  border-color: rgba(255, 200, 69, 0.4);
}

.page-about .about-more-link-ghost:hover {
  color: var(--c-gold);
}

/* ===== 03 服务能力 ===== */
.page-about .about-capability {
  background: var(--c-white);
}

.page-about .about-capability-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-about .about-stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-stat-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.page-about .about-stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.page-about .about-stat-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--c-deep-blue);
  line-height: 1.12;
}

.page-about .about-stat-unit {
  font-size: 0.9rem;
  font-weight: 400;
  margin-left: 4px;
  color: var(--c-text-muted);
}

.page-about .about-stat-meta {
  font-size: 0.84rem;
  color: var(--c-text-muted);
  font-family: var(--font-body);
}

.page-about .about-stat-card-accent {
  background: linear-gradient(135deg, rgba(255, 200, 69, 0.14) 0%, rgba(255, 255, 255, 0.6) 100%);
  border-color: rgba(232, 163, 61, 0.35);
}

.page-about .about-stat-card-accent .about-stat-value {
  color: var(--c-red);
}

.page-about .about-capability-side {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-cap-chart {
  aspect-ratio: 16 / 9;
}

.page-about .about-cap-note {
  margin: 6px 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: #233A5E;
  background: var(--c-surface);
  border-left: 3px solid var(--c-gold-deep);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 14px 18px;
}

/* ===== 04 资质与认证 ===== */
.page-about .about-credential {
  background: var(--c-surface);
}

.page-about .about-cred-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-about .about-cred-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .about-cred-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  transition: box-shadow var(--transition-fast);
}

.page-about .about-cred-item:hover {
  box-shadow: var(--shadow-sm);
}

.page-about .about-cred-icon {
  flex: 0 0 auto;
  width: 64px;
  height: 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(255, 200, 69, 0.18) 0%, rgba(255, 200, 69, 0.06) 100%);
  border: 1px solid rgba(232, 163, 61, 0.3);
  font-family: var(--font-mono);
}

.page-about .about-cred-icon-partner,
.page-about .about-cred-icon-case {
  background: linear-gradient(135deg, rgba(18, 43, 77, 0.1) 0%, rgba(18, 43, 77, 0.04) 100%);
  border-color: rgba(18, 43, 77, 0.16);
}

.page-about .about-cred-icon-community {
  background: linear-gradient(135deg, rgba(230, 57, 70, 0.08) 0%, rgba(230, 57, 70, 0.03) 100%);
  border-color: rgba(230, 57, 70, 0.16);
}

.page-about .about-cred-code {
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  text-transform: uppercase;
}

.page-about .about-cred-badge {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-deep-blue);
  line-height: 1.1;
}

.page-about .about-cred-icon-shield .about-cred-badge {
  color: var(--c-red);
}

.page-about .about-cred-content h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-deep-blue);
  font-family: var(--font-heading);
}

.page-about .about-cred-content p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: #233A5E;
}

.page-about .about-cred-visual {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-cred-img {
  aspect-ratio: 3 / 2;
}

.page-about .about-cred-note {
  margin: 4px 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: #233A5E;
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

/* ===== 05 联系我们 ===== */
.page-about .about-reach {
  background:
    radial-gradient(circle at 85% 30%, rgba(255, 200, 69, 0.1) 0%, transparent 42%),
    var(--c-deep-blue);
  color: var(--c-white);
}

.page-about .about-reach .about-head-text h2 {
  color: var(--c-white);
}

.page-about .about-reach .about-section-sub {
  color: rgba(168, 179, 197, 0.9);
}

.page-about .about-reach-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .about-reach-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 28px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.page-about .about-reach-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 200, 69, 0.45);
}

.page-about .about-reach-label {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-muted);
}

.page-about .about-reach-value {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-gold);
  word-break: break-all;
}

.page-about .about-reach-note {
  font-size: 0.88rem;
  color: rgba(168, 179, 197, 0.9);
}

.page-about .about-reach-info {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.04);
  border: 1px dashed rgba(255, 255, 255, 0.16);
}

.page-about .about-reach-info-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-text-muted);
}

.page-about .about-reach-info-text {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.86);
}

.page-about .about-reach .about-more-link {
  margin-left: auto;
  color: var(--c-gold);
  border-color: rgba(255, 200, 69, 0.4);
}

.page-about .about-reach .about-more-link:hover {
  border-color: var(--c-gold);
  color: var(--c-white);
}

/* ===== 响应式 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 40px 0 96px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1fr 340px;
    gap: 40px;
    align-items: end;
  }

  .page-about .about-hero-facts {
    flex-direction: row;
    min-height: 150px;
  }

  .page-about .about-story,
  .page-about .about-milestones,
  .page-about .about-capability,
  .page-about .about-credential,
  .page-about .about-reach {
    padding: 96px 0;
  }

  .page-about .about-section-head {
    grid-template-columns: 80px 1fr auto;
    align-items: end;
    gap: 20px;
  }

  .page-about .about-section-head .section-number {
    font-size: 3.8rem;
  }

  .page-about .about-section-head .rule-gold {
    order: 3;
  }

  .page-about .about-story-layout {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-capability-layout {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-cred-layout {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-reach-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .page-about .about-tl-item {
    grid-template-columns: 28px 150px minmax(0, 1fr);
    gap: 24px;
  }

  .page-about .about-tl-body {
    display: contents;
  }

  .page-about .about-tl-year {
    grid-column: 2;
    text-align: right;
    padding-top: 4px;
  }

  .page-about .about-tl-card {
    grid-column: 3;
  }
}

@media (min-width: 1024px) {
  .page-about .about-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1fr 380px;
  }

  .page-about .about-tl-card {
    padding: 26px 28px;
  }

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