.page-about {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ===== 面包屑 ===== */
.page-about .about-breadcrumb-wrap {
  padding-top: 96px;
  padding-bottom: 8px;
}

/* ===== 首屏 Hero ===== */
.page-about .about-hero {
  padding: 44px 0 88px;
  position: relative;
  background:
    radial-gradient(circle at 85% 10%, rgba(123, 47, 255, 0.2), transparent 42%),
    linear-gradient(160deg, var(--color-bg) 0%, #0B2347 55%, var(--color-bg-card) 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -40px;
  top: 24px;
  width: 260px;
  height: 260px;
  background: linear-gradient(
    135deg,
    transparent 18%, var(--color-purple) 18%, var(--color-purple) 22%,
    transparent 22%, transparent 40%, var(--color-orange) 40%,
    var(--color-orange) 44%, transparent 44%
  );
  opacity: 0.5;
  pointer-events: none;
}

.page-about .about-hero-inner {
  display: grid;
  gap: 40px;
  position: relative;
  z-index: 1;
}

.page-about .about-hero-copy {
  max-width: 720px;
}

.page-about .about-hero-copy h1 {
  font-family: var(--font-title);
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  line-height: 1.06;
  letter-spacing: 0.02em;
  margin: 18px 0 8px;
}

.page-about .about-hero-lead {
  font-family: var(--font-data);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-green);
  margin: 0 0 18px;
}

.page-about .about-hero-desc {
  color: var(--color-text-dim);
  line-height: 1.85;
  margin: 0 0 28px;
  max-width: 58ch;
}

.page-about .about-hero-index {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  padding: 16px 0 0;
  border-top: 1px solid var(--color-border);
}

.page-about .about-hero-index-title {
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--color-text-faint);
  text-transform: uppercase;
}

.page-about .about-hero-index-link {
  color: var(--color-link);
  font-size: 0.95rem;
  text-decoration: none;
  padding: 2px 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease-fast), color var(--ease-fast);
}

.page-about .about-hero-index-link:hover {
  color: var(--color-green);
  border-bottom-color: var(--color-green);
}

.page-about .about-hero-visual {
  position: relative;
}

.page-about .about-hero-console {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about .hero-console-panel {
  background: rgba(22, 42, 74, 0.85);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px 18px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color var(--ease-fast), transform var(--ease-fast);
}

.page-about .hero-console-panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, transparent 50%, rgba(57, 255, 20, 0.18) 50%);
}

.page-about .hero-console-panel--accent {
  background: linear-gradient(135deg, var(--color-purple), var(--color-purple-light));
  border-color: transparent;
}

.page-about .hero-console-panel--orange {
  border-color: rgba(255, 102, 0, 0.45);
}

.page-about .hero-console-panel:hover {
  border-color: var(--color-green);
  transform: translateY(-2px);
}

.page-about .hero-console-label {
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--color-text-dim);
}

.page-about .hero-console-panel--accent .hero-console-label {
  color: rgba(255, 255, 255, 0.85);
}

.page-about .hero-console-value {
  font-family: var(--font-danger, var(--font-data));
  font-family: var(--font-data);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-text);
}

.page-about .hero-console-panel--accent .hero-console-value {
  color: #fff;
}

.page-about .hero-console-panel--orange .hero-console-value {
  color: var(--color-orange);
}

/* ===== 品牌故事 ===== */
.page-about .section-header {
  margin-bottom: 40px;
}

.page-about .brand-story-layout {
  display: grid;
  gap: 32px;
}

.page-about .brand-story-copy p {
  color: var(--color-text-dim);
  line-height: 1.9;
  margin: 0 0 18px;
  font-size: 1rem;
}

.page-about .brand-story-copy p:last-child {
  margin-bottom: 0;
}

.page-about .brand-story-facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-about .about-fact-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  transition: border-color var(--ease-fast), background var(--ease-fast);
}

.page-about .about-fact-item:hover {
  border-color: var(--color-green);
  background: var(--color-bg-elevate);
}

.page-about .about-fact-num {
  display: block;
  font-family: var(--font-data);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-green);
  margin-bottom: 8px;
}

.page-about .about-fact-item:nth-child(2) .about-fact-num,
.page-about .about-fact-item:nth-child(3) .about-fact-num {
  color: var(--color-orange);
}

.page-about .about-fact-label {
  display: block;
  color: var(--color-text-dim);
  font-size: 0.88rem;
}

/* ===== 发展里程碑 ===== */
.page-about .milestones {
  background: var(--color-bg-aux);
  position: relative;
}

.page-about .milestones::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245, 242, 233, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 242, 233, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

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

.page-about .milestone-lead-image {
  margin-bottom: 56px;
}

.page-about .milestone-lead-image .image-placeholder {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.page-about .timeline {
  position: relative;
  padding-bottom: 8px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-purple), var(--color-green), var(--color-orange));
}

.page-about .timeline-item {
  position: relative;
  padding-left: 56px;
  margin-bottom: 32px;
}

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

.page-about .timeline-marker {
  position: relative;
  margin-bottom: 12px;
}

.page-about .timeline-marker::before {
  content: "";
  position: absolute;
  left: -36px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-green);
  box-shadow: 0 0 0 5px rgba(57, 255, 20, 0.18);
}

.page-about .timeline-marker-content {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.page-about .timeline-era {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.05;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.page-about .timeline-version {
  font-family: var(--font-data);
  font-size: 0.78rem;
  color: var(--color-orange);
  border: 1px solid rgba(255, 102, 0, 0.45);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: rgba(255, 102, 0, 0.08);
  white-space: nowrap;
}

.page-about .timeline-panel {
  background: rgba(22, 42, 74, 0.72);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: 24px 26px;
  transition: border-color var(--ease-fast), transform var(--ease-fast), background var(--ease-fast);
}

.page-about .timeline-panel h3 {
  font-family: var(--font-title);
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  margin: 0 0 8px;
}

.page-about .timeline-panel p {
  color: var(--color-text-dim);
  line-height: 1.75;
  margin: 0;
  font-size: 0.95rem;
}

.page-about .timeline-panel:hover {
  border-color: var(--color-green);
  background: rgba(22, 42, 74, 0.95);
  transform: translateY(-2px);
}

/* ===== 数据能力 ===== */
.page-about .data-capability {
  position: relative;
}

.page-about .capability-layout {
  display: grid;
  gap: 36px;
}

.page-about .capability-visual {
  position: relative;
}

.page-about .capability-visual::before {
  content: "";
  position: absolute;
  top: -12px;
  right: -12px;
  width: 65%;
  height: 65%;
  background: linear-gradient(135deg, var(--color-purple), var(--color-purple-light));
  opacity: 0.18;
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  border-radius: 0 var(--radius-md) 0 0;
  z-index: 0;
}

.page-about .capability-image {
  position: relative;
  z-index: 1;
  aspect-ratio: 5 / 4;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .capability-content {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-about .capability-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about .capability-stat {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  transition: border-color var(--ease-fast), background var(--ease-fast);
}

.page-about .capability-stat:hover {
  border-color: var(--color-green);
  background: var(--color-bg-elevate);
}

.page-about .capability-stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-green);
  margin-bottom: 6px;
}

.page-about .capability-stat:nth-child(3) .capability-stat-num,
.page-about .capability-stat:nth-child(4) .capability-stat-num {
  color: var(--color-orange);
}

.page-about .capability-stat-label {
  display: block;
  color: var(--color-text-dim);
  font-size: 0.88rem;
}

.page-about .capability-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .capability-list li {
  position: relative;
  padding: 12px 14px 12px 44px;
  background: rgba(22, 42, 74, 0.64);
  border-left: 3px solid var(--color-purple);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text-dim);
  line-height: 1.7;
  font-size: 0.95rem;
  transition: border-color var(--ease-fast), background var(--ease-fast);
}

.page-about .capability-list li:hover {
  border-left-color: var(--color-green);
  background: rgba(22, 42, 74, 0.9);
}

.page-about .capability-list li::before {
  content: "▸";
  position: absolute;
  left: 18px;
  color: var(--color-green);
  font-family: var(--font-data);
}

.page-about .capability-note {
  margin: 0;
  padding: 18px 20px;
  background: var(--color-bg-aux);
  border-left: 3px solid var(--color-orange);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text-dim);
  font-size: 0.92rem;
  line-height: 1.8;
  font-style: normal;
}

/* ===== 团队与资质 ===== */
.page-about .team-qualifications {
  background: linear-gradient(180deg, var(--color-bg) 0%, rgba(123, 47, 255, 0.06) 100%);
}

.page-about .team-layout {
  display: grid;
  gap: 36px;
}

.page-about .team-visual .image-placeholder {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .team-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-about .team-content > p {
  color: var(--color-text-dim);
  line-height: 1.85;
  margin: 0;
  font-size: 1rem;
}

.page-about .qualification-grid {
  display: grid;
  gap: 14px;
}

.page-about .qualification-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: border-color var(--ease-fast), transform var(--ease-fast);
}

.page-about .qualification-card:hover {
  border-color: var(--color-orange);
  transform: translateY(-3px);
}

.page-about .qualification-card h3 {
  font-family: var(--font-title);
  font-size: 1.15rem;
  margin: 10px 0 6px;
  letter-spacing: 0.02em;
}

.page-about .qualification-card p {
  margin: 0;
  color: var(--color-text-dim);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ===== CTA 引导 ===== */
.page-about .about-cta {
  padding-top: 8px;
}

.page-about .about-cta-inner {
  background:
    linear-gradient(135deg, rgba(123, 47, 255, 0.24), rgba(159, 95, 255, 0.1)),
    var(--color-bg-card);
  border: 1px solid rgba(123, 47, 255, 0.4);
  border-radius: var(--radius-lg);
  padding: 44px 28px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.page-about .about-cta-inner h2 {
  font-family: var(--font-title);
  font-size: 1.7rem;
  margin: 0;
  letter-spacing: 0.02em;
}

.page-about .about-cta-inner p {
  margin: 0;
  color: var(--color-text-dim);
  font-size: 0.95rem;
}

.page-about .about-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 10px;
}

/* ===== 平板断点 ===== */
@media (min-width: 48em) {
  .page-about .brand-story-layout {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: start;
  }

  .page-about .capability-layout {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

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

  .page-about .team-layout {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }

  .page-about .qualification-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-cta-links {
    gap: 16px;
  }
}

/* ===== 桌面断点 ===== */
@media (min-width: 62em) {
  .page-about .about-breadcrumb-wrap {
    padding-top: 116px;
    padding-bottom: 12px;
  }

  .page-about .about-hero {
    padding: 56px 0 104px;
  }

  .page-about .about-hero-inner {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 64px;
  }

  .page-about .about-hero-visual {
    display: flex;
    justify-content: flex-end;
  }

  .page-about .about-hero-console {
    max-width: 520px;
    gap: 18px;
  }

  .page-about .hero-console-panel {
    padding: 28px 24px;
  }

  .page-about .hero-console-value {
    font-size: 2.6rem;
  }

  .page-about .timeline {
    padding-top: 8px;
  }

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

  .page-about .timeline-item {
    display: grid;
    grid-template-columns: 1fr 220px 1fr;
    gap: 48px;
    align-items: center;
    padding-left: 0;
  }

  .page-about .timeline-marker {
    grid-column: 2;
    grid-row: 1;
    margin-bottom: 0;
    display: flex;
    justify-content: center;
    height: 100%;
    min-height: 120px;
  }

  .page-about .timeline-marker::before {
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
  }

  .page-about .timeline-marker-content {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    white-space: nowrap;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
  }

  .page-about .timeline-marker-content .timeline-era,
  .page-about .timeline-marker-content .timeline-version {
    white-space: nowrap;
  }

  .page-about .timeline-item:nth-child(odd) .timeline-marker-content {
    left: calc(50% + 26px);
    align-items: flex-start;
  }

  .page-about .timeline-item:nth-child(even) .timeline-marker-content {
    right: calc(50% + 26px);
    align-items: flex-end;
  }

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

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

  .page-about .timeline-era {
    font-size: 2.4rem;
  }
}

.page-about {
  --font-danger: inherit;
}