.page-about {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.65;
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* -------- 英雄区 -------- */
.page-about .about-hero {
  position: relative;
  padding: 40px 20px 52px;
  background:
    linear-gradient(135deg, transparent 0%, rgba(30, 91, 255, 0.22) 60%),
    radial-gradient(circle at 85% 15%, rgba(0, 230, 138, 0.14) 0%, transparent 55%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(30, 91, 255, 0.16) 0%, transparent 55%);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 22% 100%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  width: 68%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-green) 100%);
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 100%, 30px 100%);
  pointer-events: none;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-w);
  margin: 0 auto;
}

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

.page-about .about-hero-copy {
  max-width: 680px;
}

.page-about .about-hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--accent-green);
  text-transform: uppercase;
  margin: 0 0 14px;
}

.page-about .about-hero-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--accent-green);
  display: inline-block;
}

.page-about .about-hero-title {
  font-family: var(--font-title);
  font-size: clamp(34px, 6vw, 62px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin: 0 0 18px;
}

.page-about .about-hero-lead {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0 0 28px;
  max-width: 700px;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .about-hero-stats .hero-stat:last-child {
  grid-column: 1 / -1;
}

.page-about .hero-stat {
  border-radius: var(--radius-m);
  padding: 16px 10px;
  text-align: center;
  background: var(--bg-glass);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.page-about .hero-stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
}

.page-about .hero-stat-label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 6px;
  line-height: 1.3;
}

/* -------- 品牌故事 -------- */
.page-about .about-story,
.page-about .about-milestones,
.page-about .about-lineup,
.page-about .about-capability,
.page-about .about-cta {
  padding-top: 52px;
  padding-bottom: 52px;
}

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

.page-about .about-story::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.16), transparent);
}

.page-about .about-story-grid {
  display: grid;
  gap: 36px;
  align-items: center;
}

.page-about .about-story-copy .section-kicker {
  margin-bottom: 10px;
}

.page-about .about-story-copy .section-title {
  font-family: var(--font-title);
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 16px;
}

.page-about .about-story-copy > p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.page-about .about-quote {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 4px solid var(--accent-green);
  background: rgba(0, 230, 138, 0.08);
  border-radius: 0 8px 8px 0;
  font-family: var(--font-accent);
  font-size: 18px;
  color: var(--text-primary);
}

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

.page-about .story-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-card);
}

.page-about .about-story-note {
  margin-top: 14px;
  padding: 14px 16px;
  background: var(--bg-glass);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-m);
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.page-about .about-story-note svg {
  flex-shrink: 0;
  margin-top: 2px;
}

.page-about .about-story-note p {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* -------- 里程碑 -------- */
.page-about .about-milestones {
  background:
    linear-gradient(180deg, rgba(30, 91, 255, 0.14) 0%, transparent 160px),
    var(--bg-deep);
}

.page-about .about-section-heading {
  display: grid;
  gap: 8px;
  margin-bottom: 32px;
}

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

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 7px;
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--accent-green) 0%,
    rgba(30, 91, 255, 0.55) 68%,
    rgba(255, 255, 255, 0.12) 100%
  );
}

.page-about .timeline-item {
  position: relative;
  padding: 0 0 24px 36px;
}

.page-about .timeline-dot {
  position: absolute;
  top: 26px;
  left: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-green);
  border: 3px solid var(--bg-deep);
  box-shadow: 0 0 0 2px var(--accent-green);
  transition: transform 200ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 200ms, background-color 200ms;
}

.page-about .timeline-item:hover .timeline-dot,
.page-about .timeline-item:focus-within .timeline-dot {
  transform: scale(1.35);
  box-shadow: 0 0 0 5px var(--accent-green);
}

.page-about .timeline-card {
  padding: 20px 22px;
  border-radius: var(--radius-m);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--bg-glass);
  transition: background-color 200ms, border-color 200ms, transform 200ms;
}

.page-about .timeline-card:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateX(4px);
}

.page-about .timeline-year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-green);
  background: rgba(0, 230, 138, 0.12);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.page-about .timeline-card h3 {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 6px;
  letter-spacing: 0.3px;
}

.page-about .timeline-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.page-about .timeline-side-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* -------- 服务阵容变动 -------- */
.page-about .about-lineup {
  position: relative;
}

.page-about .about-lineup::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 55%;
  height: 100%;
  background: linear-gradient(270deg, rgba(30, 91, 255, 0.16) 0%, transparent 70%);
  clip-path: polygon(18% 0, 100% 0, 100% 100%, 0% 100%);
  pointer-events: none;
}

.page-about .about-lineup-grid {
  position: relative;
  display: grid;
  gap: 32px;
}

.page-about .about-lineup-table-wrap {
  overflow-x: auto;
  max-width: 100%;
  border-radius: var(--radius-m);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--bg-glass);
}

.page-about .about-lineup-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-about .about-lineup-table th,
.page-about .about-lineup-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about .about-lineup-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.06);
  white-space: nowrap;
}

.page-about .about-lineup-table tbody tr:last-child td {
  border-bottom: none;
}

.page-about .about-lineup-table tbody tr {
  transition: background-color 200ms;
}

.page-about .about-lineup-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.08);
}

.page-about .about-lineup-table tbody td:first-child {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-green);
  white-space: nowrap;
}

.page-about .lineup-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* -------- 数据能力 -------- */
.page-about .about-capability {
  background:
    radial-gradient(circle at 15% 30%, rgba(30, 91, 255, 0.18) 0%, transparent 42%),
    var(--bg-deep);
}

.page-about .about-capability-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.page-about .capability-card {
  border-radius: var(--radius-m);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--bg-glass);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: transform 200ms, border-color 200ms, background-color 200ms;
}

.page-about .capability-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 230, 138, 0.35);
  background: rgba(255, 255, 255, 0.11);
}

.page-about .capability-num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 38px);
  font-weight: 700;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .capability-label {
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
}

.page-about .capability-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.page-about .about-capability-note {
  margin-top: 28px;
  padding: 22px 24px;
  border-radius: var(--radius-m);
  border: 1px solid rgba(255, 92, 57, 0.3);
  background: rgba(255, 92, 57, 0.06);
}

.page-about .about-capability-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* -------- CTA -------- */
.page-about .about-cta {
  padding-bottom: 72px;
}

.page-about .about-cta-card {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 26px;
  padding: 36px 24px;
  border-radius: var(--radius-l);
  background: linear-gradient(120deg, rgba(30, 91, 255, 0.3) 0%, rgba(30, 91, 255, 0.08) 45%, rgba(0, 230, 138, 0.09) 100%);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: var(--shadow-card);
}

.page-about .about-cta-card .section-title {
  font-family: var(--font-title);
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 700;
  margin-bottom: 8px;
}

.page-about .about-cta-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  max-width: 560px;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* -------- 桌面端断点 -------- */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 48px 28px 64px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
    align-items: center;
    gap: 44px;
  }

  .page-about .about-hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }

  .page-about .about-hero-stats .hero-stat:last-child {
    grid-column: auto;
  }

  .page-about .hero-stat-value {
    font-size: 26px;
  }

  .page-about .about-story,
  .page-about .about-milestones,
  .page-about .about-lineup,
  .page-about .about-capability,
  .page-about .about-cta {
    padding-top: 76px;
    padding-bottom: 76px;
  }

  .page-about .about-story-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
    gap: 48px;
  }

  .page-about .about-capability-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-cta-card {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 44px 40px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 72px 32px 92px;
  }

  .page-about .about-milestone-layout {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-timeline-side {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }

  .page-about .about-lineup-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.7fr);
    gap: 44px;
    align-items: center;
  }

  .page-about .about-cta-card {
    padding: 56px 52px;
  }
}