/* 华体会体育 品牌介绍 页面专属样式 */
.page-about {
  --about-gold: #D4AF37;
  --about-accent: #FF5E3A;
  --about-deep: #060D18;
  --about-blue: #0B1F3A;
  --about-blue-light: #1E3A5F;
  --about-line-dark: rgba(255,255,255,0.16);
  --about-line-light: #D6DCE4;
  background: var(--color-white);
  font-family: var(--font-body);
}

.page-about .breadcrumbs {
  margin-bottom: var(--space-md);
}

.page-about .about-hero .breadcrumbs a {
  color: rgba(255,255,255,0.7);
}

.page-about .about-hero .breadcrumbs a:hover {
  color: #fff;
}

/* 01 品牌初心 */
.page-about .about-hero {
  background: linear-gradient(150deg, #0B1F3A 0%, #1E3A5F 58%, #060D18 100%);
  color: #fff;
  padding: var(--space-md) 0 var(--space-lg);
}

.page-about .about-hero-grid {
  display: grid;
  gap: var(--space-md);
  align-items: center;
}

.page-about .about-hero-content .section-index-line {
  background: var(--about-gold);
}

.page-about .about-hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.15;
  margin: 0 0 var(--space-sm);
  letter-spacing: -0.02em;
  color: #fff;
}

.page-about .h1-sub {
  display: block;
  font-size: 0.52em;
  color: var(--about-gold);
  margin-top: 0.5rem;
  font-weight: 500;
  letter-spacing: 0;
}

.page-about .about-principle-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: rgba(255,255,255,0.82);
  margin: 0 0 var(--space-sm);
  letter-spacing: 0.04em;
}

.page-about .about-hero-text {
  max-width: 38em;
  color: rgba(255,255,255,0.85);
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .about-hero .tag {
  background: transparent;
  border: 1px solid var(--about-line-dark);
  color: #fff;
}

.page-about .about-hero .tag-gold {
  border-color: var(--about-gold);
  color: var(--about-gold);
}

.page-about .about-hero .tag-orange {
  border-color: var(--about-accent);
  color: var(--about-accent);
}

.page-about .about-hero-visual .image-frame {
  border: 1px solid var(--about-line-dark);
  background: rgba(255,255,255,0.05);
}

.page-about .about-hero-visual .image-frame-1-1 {
  max-width: 520px;
  margin: 0 auto;
}

.page-about .image-frame img {
  max-width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .about-hero-content,
.page-about .about-hero-visual,
.page-about .tech-visual,
.page-about .tech-content,
.page-about .service-content,
.page-about .service-visual {
  min-width: 0;
}

/* 02 发展历程 */
.page-about .about-journey {
  background: linear-gradient(165deg, #0B1F3A 0%, #060D18 100%);
  color: #fff;
  padding: var(--space-lg) 0;
}

.page-about .about-journey .section-title,
.page-about .about-service .section-title {
  color: #fff;
}

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

.page-about .about-journey .section-index-line,
.page-about .about-service .section-index-line {
  background: var(--about-gold);
}

.page-about .about-journey .section-lead,
.page-about .about-service .section-lead {
  color: rgba(255,255,255,0.78);
  max-width: 42em;
}

.page-about .about-timeline {
  display: grid;
  gap: 1.25rem;
  margin-top: var(--space-md);
}

.page-about .timeline-step {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 0.75rem;
}

.page-about .timeline-marker {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 0.5rem;
}

.page-about .timeline-dot {
  display: block;
  width: 12px;
  height: 12px;
  background: var(--about-gold);
  transform: rotate(45deg);
  border-radius: 2px;
  box-shadow: 0 0 0 4px rgba(212,175,55,0.18);
  transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.page-about .timeline-marker::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 1.5rem;
  bottom: calc(-1.25rem);
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(to bottom, var(--about-gold), rgba(212,175,55,0.2));
}

.page-about .timeline-step:last-child .timeline-marker::before {
  display: none;
}

.page-about .version-label {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.04em;
}

.page-about .version-detail {
  display: block;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.6);
  margin-top: 0.25rem;
  line-height: 1.35;
  text-align: center;
}

.page-about .timeline-step .card {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--about-line-dark);
  color: rgba(255,255,255,0.9);
  border-radius: 0;
  padding: 1rem 1.25rem;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.page-about .timeline-step .card h3 {
  color: #fff;
  font-size: 1.05rem;
  margin: 0 0 0.4rem;
}

.page-about .timeline-step .card p {
  margin: 0;
  color: rgba(255,255,255,0.7);
  font-size: 0.92rem;
}

.page-about .timeline-step:hover .card,
.page-about .timeline-step:focus-within .card {
  border-color: var(--about-gold);
  background: rgba(255,255,255,0.07);
}

.page-about .timeline-step:hover .timeline-dot,
.page-about .timeline-step:focus-within .timeline-dot {
  background: var(--about-accent);
  box-shadow: 0 0 0 6px rgba(255,94,58,0.22);
  transform: rotate(45deg) scale(1.15);
}

/* 03 技术实力与安全保障 */
.page-about .about-tech {
  background: var(--color-light-gray);
  padding: var(--space-lg) 0;
}

.page-about .about-tech .section-index-line {
  background: var(--color-primary);
}

.page-about .about-tech-grid {
  display: grid;
  gap: var(--space-lg);
  align-items: center;
}

.page-about .about-tech .section-lead {
  color: var(--color-primary);
  font-size: 1.05rem;
}

.page-about .about-tech .image-frame {
  border: 1px solid var(--about-line-light);
}

.page-about .about-feature-list {
  list-style: none;
  margin: var(--space-md) 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-feature-list li {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 0.75rem;
  border-top: 1px solid var(--about-line-light);
  padding-top: 1rem;
}

.page-about .feature-num {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--about-accent);
  letter-spacing: 0.06em;
}

.page-about .about-feature-list h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
  color: var(--color-primary);
}

.page-about .about-feature-list p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-gray);
}

.page-about .about-tech-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-top: var(--space-md);
}

.page-about .about-tech-stats > span {
  border-left: 3px solid var(--about-accent);
  padding-left: 1rem;
  font-size: 0.9rem;
  color: var(--color-gray);
}

.page-about .stat-num {
  display: block;
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

/* 04 服务理念与团队 */
.page-about .about-service {
  background: linear-gradient(180deg, #0B1F3A 0%, #060D18 100%);
  color: #fff;
  padding: var(--space-lg) 0;
}

.page-about .about-service-grid {
  display: grid;
  gap: var(--space-md);
  align-items: center;
}

.page-about .about-service-list {
  list-style: none;
  margin: var(--space-md) 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-about .about-service-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border: 1px solid var(--about-line-dark);
  padding: 0.75rem 1rem;
}

.page-about .service-item-label {
  color: rgba(255,255,255,0.6);
  font-size: 0.92rem;
}

.page-about .service-item-value {
  color: #fff;
  font-weight: 600;
  font-size: 0.92rem;
  text-align: right;
}

.page-about .service-note {
  color: rgba(255,255,255,0.7);
  font-size: 0.92rem;
}

.page-about .service-note a {
  color: var(--about-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .service-note a:hover {
  color: var(--about-accent);
}

.page-about .service-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-about .service-cta .btn-outline {
  border: 1px solid rgba(255,255,255,0.4);
  color: #fff;
}

.page-about .service-cta .btn-outline:hover {
  border-color: var(--about-gold);
  color: var(--about-gold);
}

.page-about .about-service .image-frame {
  border: 1px solid var(--about-line-dark);
  background: rgba(255,255,255,0.05);
}

/* 05 品牌承诺 */
.page-about .about-commitment {
  background: var(--color-white);
  padding: var(--space-xl) 0;
  text-align: center;
}

.page-about .about-commitment .section-index-line {
  background: var(--color-primary);
}

.page-about .about-commitment .section-title {
  color: var(--color-primary);
}

.page-about .about-commitment-quote {
  max-width: 36rem;
  margin: 0 auto;
  border: none;
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 3vw, 1.9rem);
  line-height: 1.55;
  color: var(--color-primary);
}

.page-about .about-commitment-quote p {
  margin: 0;
}

.page-about .about-commitment-note {
  margin-top: var(--space-md);
  color: var(--color-gray);
  font-size: 1rem;
}

.page-about .about-commitment-links {
  margin-top: var(--space-md);
}

.page-about .about-commitment-links .btn-vip {
  border: 1px solid var(--about-gold);
  color: var(--color-primary);
  background: transparent;
}

.page-about .about-commitment-links .btn-vip:hover {
  background: var(--about-gold);
  color: #fff;
}

@media (min-width: 768px) {
  .page-about .timeline-step {
    grid-template-columns: 120px 1fr;
    gap: 1.5rem;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding-top: var(--space-lg);
    padding-bottom: var(--space-xl);
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-lg);
  }

  .page-about .about-tech-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: var(--space-xl);
  }

  .page-about .about-service-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-xl);
  }
}