.page-about {
  --about-card-hover: #1E1E2A;
  overflow-x: hidden;
  background: var(--bg-dark);
  color: var(--text-primary);
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  padding: 48px 0 40px;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -140px;
  width: 400px;
  height: 300px;
  background: var(--gradient-red-blue);
  opacity: 0.14;
  transform: rotate(-14deg);
  border-radius: var(--radius-lg);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}

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

.page-about .about-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--primary-red);
  text-transform: uppercase;
}

.page-about .about-hero__kicker::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--gradient-red-blue);
  border-radius: 2px;
}

.page-about .about-hero__main h1 {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}

.page-about .about-hero__lead {
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 560px;
}

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

.page-about .about-hero__aside {
  display: grid;
  gap: 24px;
  align-content: start;
}

.page-about .about-hero__index {
  position: relative;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-hero__index::before {
  content: '';
  position: absolute;
  left: 0;
  top: 2px;
  bottom: 2px;
  width: 3px;
  border-radius: 3px;
  background: var(--gradient-red-blue);
}

.page-about .about-hero__index-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.page-about .about-hero__index a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.page-about .about-hero__index a:hover {
  color: var(--primary-blue);
  transform: translateX(4px);
}

.page-about .about-hero__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
}

/* 章节标题 */
.page-about .about-section-head {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.page-about .about-section-head .section__index {
  flex-shrink: 0;
  margin-top: 8px;
}

.page-about .about-section-head__copy {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-section-head__copy .section__title,
.page-about .about-section-head__copy .section__desc {
  margin: 0;
}

/* 品牌使命 */
.page-about .about-mission__grid {
  display: grid;
  gap: 32px;
  margin-top: 40px;
}

.page-about .about-mission__text {
  display: grid;
  gap: 16px;
}

.page-about .about-mission__text p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.page-about .about-mission__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .about-mission__facts li {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.page-about .about-mission__fact-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.page-about .about-mission__facts strong {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

/* 2026赛季改版亮点 */
.page-about .about-renovation {
  position: relative;
}

.page-about .about-renovation::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: radial-gradient(ellipse at 72% 18%, rgba(255, 59, 48, 0.08), transparent 58%);
  pointer-events: none;
  z-index: 0;
}

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

.page-about .about-renovation__cards {
  margin-top: 40px;
}

.page-about .about-renovation__card {
  position: relative;
  overflow: hidden;
  height: 100%;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.page-about .about-renovation__card::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--gradient-red-blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.page-about .about-renovation__card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
  background: var(--about-card-hover);
}

.page-about .about-renovation__card:hover::after {
  transform: scaleX(1);
}

.page-about .about-renovation__card .badge {
  margin-bottom: 6px;
}

.page-about .about-renovation__card h3 {
  font-size: 18px;
  font-weight: 800;
  margin: 16px 0 10px;
}

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

.page-about .about-renovation__note {
  margin-top: 28px;
  padding: 16px 20px;
  border-left: 3px solid var(--primary-green);
  background: rgba(48, 209, 88, 0.06);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

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

/* 服务能力 */
.page-about .about-capability__layout {
  display: grid;
  gap: 40px;
  margin-top: 40px;
}

.page-about .about-capability__list {
  display: grid;
  gap: 16px;
}

.page-about .about-capability__item {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.page-about .about-capability__item:hover {
  border-color: rgba(10, 132, 255, 0.45);
  transform: translateX(4px);
}

.page-about .about-capability__item h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 800;
  margin: 0 0 8px;
}

.page-about .about-capability__item h3::before {
  content: '';
  width: 16px;
  height: 16px;
  background: var(--gradient-blue-green);
  border-radius: 4px;
  transform: rotate(45deg);
  flex-shrink: 0;
  transition: background var(--transition-base);
}

.page-about .about-capability__item:hover h3::before {
  background: var(--gradient-red-blue);
}

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

.page-about .about-capability__media {
  align-self: center;
  justify-self: center;
  max-width: 240px;
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.page-about .about-capability__media:hover {
  transform: translateY(-6px) rotate(1.5deg);
  box-shadow: 0 12px 36px rgba(10, 132, 255, 0.22);
}

.page-about .about-capability__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

/* 发展历程 */
.page-about .about-timeline {
  position: relative;
}

.page-about .about-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: radial-gradient(ellipse at 28% 60%, rgba(10, 132, 255, 0.08), transparent 58%);
  pointer-events: none;
  z-index: 0;
}

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

.page-about .about-timeline__layout {
  display: grid;
  gap: 40px;
  margin-top: 40px;
}

.page-about .about-timeline__wrap {
  position: relative;
  padding-left: 32px;
}

.page-about .about-timeline__line {
  position: absolute;
  left: 12px;
  top: 4px;
  bottom: 8px;
  width: 2px;
  background: var(--border-subtle);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 36px;
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline__dot {
  position: absolute;
  left: -32px;
  top: 3px;
  width: 16px;
  height: 16px;
  background: var(--bg-dark);
  border: 3px solid var(--primary-red);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(255, 59, 48, 0.12);
  transition: border-color var(--transition-base), background var(--transition-base), transform var(--transition-base);
}

.page-about .about-timeline__item:hover .about-timeline__dot {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
  transform: scale(1.08);
}

.page-about .about-timeline__content {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: border-color var(--transition-base), background var(--transition-base), transform var(--transition-base);
}

.page-about .about-timeline__item:hover .about-timeline__content {
  border-color: rgba(10, 132, 255, 0.36);
  background: var(--about-card-hover);
  transform: translateX(4px);
}

.page-about .about-timeline__content h3 {
  font-size: 16px;
  font-weight: 800;
  margin: 0 0 8px;
}

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

.page-about .about-timeline__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.26);
  align-self: start;
}

.page-about .about-timeline__media img {
  display: block;
  width: 100%;
  height: auto;
}

/* 收尾 CTA */
.page-about .about-outro {
  padding-top: 8px;
  padding-bottom: 72px;
}

.page-about .about-outro__inner {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 48px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background: linear-gradient(135deg, rgba(255, 59, 48, 0.06), rgba(10, 132, 255, 0.06));
}

.page-about .about-outro__inner::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: var(--gradient-red-blue);
}

.page-about .about-outro__inner h2 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 900;
  margin: 0 0 12px;
}

.page-about .about-outro__inner p {
  margin: 0 0 28px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.page-about .about-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* 桌面端 */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 72px 0 56px;
  }

  .page-about .about-hero__main h1 {
    font-size: 46px;
  }
}

@media (min-width: 920px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1.4fr 0.8fr;
    gap: 64px;
  }

  .page-about .about-hero__main h1 {
    font-size: 56px;
    line-height: 1.12;
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }

  .page-about .about-mission__grid {
    grid-template-columns: 7fr 4fr;
    gap: 64px;
  }

  .page-about .about-capability__layout {
    grid-template-columns: 7fr 4fr;
    gap: 64px;
    align-items: center;
  }

  .page-about .about-timeline__layout {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero__main h1 {
    font-size: 64px;
  }
}