/* ============================================
   Page: about — 品牌介绍
   作用域：.page-about
   ============================================ */

.page-about {
  --ab-primary: #FF6B1A;
  --ab-accent: #00BFFF;
  --ab-dark: #1A1A1A;
  --ab-gray: #2C2C2C;
  --ab-light: #FFFFFF;
  --ab-text: #1A1A1A;
  --ab-text-muted: #666666;
  --ab-border: #e0e0e0;
  --ab-font-heading: 'Impact', 'Arial Black', sans-serif;
  --ab-font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --ab-font-meta: 'Courier New', monospace;
  --ab-shadow-card: 0 8px 24px rgba(0,0,0,0.10);
  --ab-shadow-hover: 0 12px 32px rgba(0,0,0,0.18);
  --ab-radius: 12px;
  --ab-transition: 0.3s ease;

  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--ab-light);
  color: var(--ab-text);
  font-family: var(--ab-font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding: 1rem var(--content-max-width, 1200px) 0;
  margin: 0 auto;
  width: 100%;
  max-width: var(--content-max-width, 1200px);
  box-sizing: border-box;
}
.page-about .breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 0;
  font-size: 0.85rem;
  font-family: var(--ab-font-meta);
  color: var(--ab-text-muted);
}
.page-about .breadcrumbs a {
  color: var(--ab-accent);
  text-decoration: none;
  transition: color var(--ab-transition);
}
.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus {
  color: var(--ab-primary);
  text-decoration: underline;
}

/* ---------- 首屏：杂志封面式 ---------- */
.page-about .ab-hero {
  position: relative;
  background: linear-gradient(135deg, var(--ab-dark) 0%, var(--ab-dark) 40%, var(--ab-gray) 100%);
  overflow: hidden;
  padding: 2rem 1rem 3rem;
  margin-bottom: 0;
}
.page-about .ab-hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 60%;
  height: 140%;
  background: linear-gradient(45deg, transparent, rgba(255,107,26,0.15), transparent);
  transform: skewX(-15deg);
  pointer-events: none;
}
.page-about .ab-hero__speedline {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(90deg, var(--ab-primary) 0px, var(--ab-primary) 20px, transparent 20px, transparent 40px);
  opacity: 0.6;
}
.page-about .ab-hero__inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.page-about .ab-hero__text {
  flex: 1 1 100%;
}
.page-about .ab-hero__title {
  font-family: var(--ab-font-heading);
  font-size: clamp(3rem, 10vw, 5.5rem);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--ab-primary);
  margin: 0 0 0.25rem;
  line-height: 1;
  letter-spacing: 0.02em;
  text-shadow: 4px 4px 0 rgba(0,0,0,0.3);
}
.page-about .ab-hero__subtitle {
  font-family: var(--ab-font-heading);
  font-size: clamp(1.2rem, 3vw, 2rem);
  font-weight: 400;
  color: var(--ab-accent);
  margin: 0 0 1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.page-about .ab-hero__desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.85);
  max-width: 480px;
  margin: 0 0 1.5rem;
  line-height: 1.5;
}
.page-about .ab-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.page-about .ab-hero__badge {
  display: inline-block;
  padding: 0.3rem 1rem;
  border: 2px solid var(--ab-primary);
  color: var(--ab-primary);
  font-family: var(--ab-font-meta);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 4px;
}
.page-about .ab-hero__badge--accent {
  border-color: var(--ab-accent);
  color: var(--ab-accent);
}
.page-about .ab-hero__visual {
  flex: 1 1 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.page-about .ab-hero__img {
  width: 100%;
  max-width: 800px;
  height: auto;
  aspect-ratio: 800 / 600;
  object-fit: cover;
  border-radius: var(--ab-radius);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
  transform: rotate(1deg) scale(0.98);
  transition: transform var(--ab-transition), box-shadow var(--ab-transition);
}
.page-about .ab-hero__img:hover {
  transform: rotate(0deg) scale(1);
  box-shadow: 0 20px 48px rgba(0,0,0,0.5);
}

/* ---------- 关于火博体育 ---------- */
.page-about .ab-about {
  padding: 3rem 1rem;
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}
.page-about .ab-about__inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.page-about .ab-about__heading {
  font-family: var(--ab-font-heading);
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: var(--ab-dark);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  position: relative;
  padding-bottom: 0.75rem;
}
.page-about .ab-about__heading::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: var(--ab-primary);
  margin-top: 0.5rem;
}
.page-about .ab-about__content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 780px;
}
.page-about .ab-about__text {
  font-size: 1rem;
  color: var(--ab-text);
  margin: 0;
  line-height: 1.7;
}
.page-about .ab-about__stat {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}
.page-about .ab-about__stat-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
}
.page-about .ab-about__stat-num {
  font-family: var(--ab-font-heading);
  font-size: 2rem;
  color: var(--ab-primary);
  line-height: 1;
  text-transform: uppercase;
}
.page-about .ab-about__stat-label {
  font-size: 0.85rem;
  color: var(--ab-text-muted);
  font-family: var(--ab-font-meta);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---------- 服务范围（倾斜卡片分层叠放） ---------- */
.page-about .ab-services {
  padding: 3rem 1rem;
  background: var(--ab-gray);
  position: relative;
  overflow: hidden;
}
.page-about .ab-services::before {
  content: '';
  position: absolute;
  top: -10%;
  left: -5%;
  width: 30%;
  height: 60%;
  background: radial-gradient(circle, rgba(0,191,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.page-about .ab-services__heading {
  font-family: var(--ab-font-heading);
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: var(--ab-light);
  margin: 0 0 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  max-width: var(--content-max-width, 1200px);
  padding: 0 1rem;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
  box-sizing: border-box;
}
.page-about .ab-services__intro {
  color: rgba(255,255,255,0.7);
  font-size: 1.05rem;
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto 2rem;
  padding: 0 1rem;
  width: 100%;
  box-sizing: border-box;
}
.page-about .ab-services__cards {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  padding: 0 1rem;
  width: 100%;
  box-sizing: border-box;
}
.page-about .ab-services__card {
  display: flex;
  flex-direction: column;
  background: var(--ab-light);
  border-radius: var(--ab-radius);
  overflow: hidden;
  box-shadow: var(--ab-shadow-card);
  border-left: 6px solid var(--ab-accent);
  transform: rotate(0deg);
  transition: transform var(--ab-transition), box-shadow var(--ab-transition), border-color var(--ab-transition);
}
.page-about .ab-services__card--1 {
  transform: rotate(-1deg) translateX(-4px);
  border-left-color: var(--ab-primary);
}
.page-about .ab-services__card--2 {
  transform: rotate(1.5deg) translateX(8px);
  border-left-color: var(--ab-accent);
}
.page-about .ab-services__card--3 {
  transform: rotate(-0.5deg) translateX(-2px);
  border-left-color: var(--ab-dark);
}
.page-about .ab-services__card:hover,
.page-about .ab-services__card:focus-within {
  transform: rotate(0deg) translateX(0) scale(1.01);
  box-shadow: var(--ab-shadow-hover);
  border-left-width: 10px;
}
.page-about .ab-services__card-img {
  width: 100%;
  max-height: 200px;
  overflow: hidden;
}
.page-about .ab-services__card-img img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform var(--ab-transition);
}
.page-about .ab-services__card:hover .ab-services__card-img img {
  transform: scale(1.05);
}
.page-about .ab-services__card-body {
  padding: 1.25rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.page-about .ab-services__card-num {
  font-family: var(--ab-font-heading);
  font-size: 2.5rem;
  color: var(--ab-primary);
  line-height: 1;
  opacity: 0.25;
  margin-bottom: -0.5rem;
}
.page-about .ab-services__card-title {
  font-family: var(--ab-font-heading);
  font-size: 1.3rem;
  color: var(--ab-dark);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.page-about .ab-services__card-text {
  font-size: 0.95rem;
  color: var(--ab-text-muted);
  margin: 0;
  line-height: 1.5;
}
.page-about .ab-services__card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--ab-font-meta);
  font-size: 0.85rem;
  color: var(--ab-accent);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--ab-transition), gap var(--ab-transition);
  margin-top: 0.25rem;
}
.page-about .ab-services__card-link:hover,
.page-about .ab-services__card-link:focus {
  color: var(--ab-primary);
  gap: 0.7rem;
  text-decoration: underline;
}

/* ---------- 更新动态 ---------- */
.page-about .ab-updates {
  padding: 3rem 1rem;
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}
.page-about .ab-updates__heading {
  font-family: var(--ab-font-heading);
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: var(--ab-dark);
  margin: 0 0 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.page-about .ab-updates__heading::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--ab-primary);
  margin-top: 0.4rem;
}
.page-about .ab-updates__list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.page-about .ab-updates__item {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: 1rem;
  color: var(--ab-text);
  padding: 0.75rem 1rem;
  background: #f9f9f9;
  border-radius: 8px;
  border-left: 4px solid var(--ab-accent);
  transition: background var(--ab-transition), border-color var(--ab-transition);
}
.page-about .ab-updates__item:hover {
  background: #f0f0f0;
  border-left-color: var(--ab-primary);
}
.page-about .ab-updates__dot {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ab-primary);
  display: inline-block;
  margin-top: 0.35rem;
}
.page-about .ab-updates__cta {
  display: flex;
  justify-content: flex-start;
}
.page-about .ab-updates__cta .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 2rem;
  background: var(--ab-primary);
  color: var(--ab-light);
  font-family: var(--ab-font-heading);
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  border-radius: 6px;
  text-decoration: none;
  transition: background var(--ab-transition), transform var(--ab-transition), box-shadow var(--ab-transition);
  cursor: pointer;
}
.page-about .ab-updates__cta .btn:hover,
.page-about .ab-updates__cta .btn:focus {
  background: #e55d0a;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255,107,26,0.3);
}

/* ---------- 联系我们 ---------- */
.page-about .ab-contact {
  padding: 3rem 1rem;
  background: linear-gradient(135deg, #f5f5f5 0%, #ffffff 100%);
}
.page-about .ab-contact__heading {
  font-family: var(--ab-font-heading);
  font-size: clamp(2rem, 5vw, 3.2rem);
  color: var(--ab-dark);
  margin: 0 0 2rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  max-width: var(--content-max-width, 1200px);
  margin-left: auto;
  margin-right: auto;
  width: 100%;
  box-sizing: border-box;
  padding: 0 1rem;
}
.page-about .ab-contact__heading::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--ab-primary);
  margin-top: 0.4rem;
}
.page-about .ab-contact__inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  padding: 0 1rem;
  width: 100%;
  box-sizing: border-box;
}
.page-about .ab-contact__info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex: 2;
}
.page-about .ab-contact__card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--ab-light);
  border-radius: 10px;
  box-shadow: var(--shadow-light, 0 2px 8px rgba(0,0,0,0.08));
  border: 1px solid var(--ab-border);
  transition: box-shadow var(--ab-transition), transform var(--ab-transition), border-color var(--ab-transition);
}
.page-about .ab-contact__card:hover {
  box-shadow: var(--ab-shadow-hover);
  transform: translateY(-2px);
  border-color: var(--ab-accent);
}
.page-about .ab-contact__icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
  color: var(--ab-primary);
}
.page-about .ab-contact__label {
  font-family: var(--ab-font-meta);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ab-text-muted);
  display: block;
  margin-bottom: 0.15rem;
}
.page-about .ab-contact__link {
  color: var(--ab-accent);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  transition: color var(--ab-transition);
}
.page-about .ab-contact__link:hover,
.page-about .ab-contact__link:focus {
  color: var(--ab-primary);
  text-decoration: underline;
}
.page-about .ab-contact__text {
  font-size: 1rem;
  color: var(--ab-text);
}
.page-about .ab-contact__note {
  font-size: 0.85rem;
  color: var(--ab-text-muted);
  margin: 0.15rem 0 0;
  font-style: italic;
}
.page-about .ab-contact__map {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}
.page-about .ab-contact__map img {
  width: 100%;
  max-width: 300px;
  height: auto;
  aspect-ratio: 300 / 200;
  object-fit: cover;
  border-radius: var(--ab-radius);
  box-shadow: var(--ab-shadow-card);
  transition: transform var(--ab-transition), box-shadow var(--ab-transition);
}
.page-about .ab-contact__map img:hover {
  transform: scale(1.02);
  box-shadow: var(--ab-shadow-hover);
}
.page-about .ab-contact__disclaimer {
  max-width: var(--content-max-width, 1200px);
  margin: 1.5rem auto 0;
  padding: 0 1rem;
  font-size: 0.85rem;
  color: var(--ab-text-muted);
  font-style: italic;
  text-align: center;
}

/* ---------- 信任声明 ---------- */
.page-about .trust-statement {
  padding: 1.5rem 1rem;
  background: var(--ab-dark);
  color: rgba(255,255,255,0.8);
  text-align: center;
  font-size: 0.9rem;
  font-family: var(--ab-font-meta);
  letter-spacing: 0.02em;
  line-height: 1.5;
}
.page-about .trust-statement p {
  margin: 0;
  max-width: var(--content-max-width, 1200px);
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   响应式：平板 ≥ 600px
   ============================================ */
@media (min-width: 600px) {
  .page-about .ab-hero {
    padding: 3rem 2rem 4rem;
  }
  .page-about .ab-hero__inner {
    flex-direction: row;
    align-items: center;
  }
  .page-about .ab-hero__text {
    flex: 1 1 50%;
  }
  .page-about .ab-hero__visual {
    flex: 1 1 45%;
  }
  .page-about .ab-hero__title {
    font-size: clamp(4rem, 8vw, 6rem);
  }
  .page-about .ab-about {
    padding: 4rem 2rem;
  }
  .page-about .ab-about__stat {
    gap: 3rem;
  }
  .page-about .ab-about__stat-num {
    font-size: 2.5rem;
  }
  .page-about .ab-services {
    padding: 4rem 2rem;
  }
  .page-about .ab-services__cards {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 2rem;
  }
  .page-about .ab-services__card {
    flex: 1 1 calc(50% - 1rem);
    max-width: calc(50% - 1rem);
  }
  .page-about .ab-services__card--1,
  .page-about .ab-services__card--2,
  .page-about .ab-services__card--3 {
    transform: none;
  }
  .page-about .ab-services__card--1 { transform: rotate(-0.8deg) translateY(-4px); }
  .page-about .ab-services__card--2 { transform: rotate(0.8deg) translateY(4px); }
  .page-about .ab-services__card--3 { transform: rotate(-0.4deg) translateY(-2px); }
  .page-about .ab-updates {
    padding: 4rem 2rem;
  }
  .page-about .ab-updates__list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }
  .page-about .ab-contact {
    padding: 4rem 2rem;
  }
  .page-about .ab-contact__inner {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-about .ab-contact__map {
    justify-content: flex-end;
  }
}

/* ============================================
   响应式：桌面 ≥ 900px
   ============================================ */
@media (min-width: 900px) {
  .page-about .ab-hero {
    padding: 4rem 2rem 5rem;
  }
  .page-about .ab-hero__title {
    font-size: clamp(5rem, 7vw, 7rem);
  }
  .page-about .ab-about__content {
    flex-direction: row;
    gap: 2rem;
  }
  .page-about .ab-about__text {
    flex: 1;
  }
  .page-about .ab-services__cards {
    flex-wrap: nowrap;
  }
  .page-about .ab-services__card {
    flex: 1 1 33.333%;
    max-width: 33.333%;
  }
  .page-about .ab-services__card--1 { transform: rotate(-1.2deg) translateY(-8px); }
  .page-about .ab-services__card--2 { transform: rotate(1.2deg) translateY(8px); }
  .page-about .ab-services__card--3 { transform: rotate(-0.6deg) translateY(-4px); }
  .page-about .ab-updates__list {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .ab-contact__info {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .page-about .ab-contact__card {
    flex: 1 1 calc(50% - 0.5rem);
  }
}

/* ============================================
   响应式：大桌面 ≥ 1200px
   ============================================ */
@media (min-width: 1200px) {
  .page-about .ab-hero__inner {
    gap: 4rem;
  }
  .page-about .ab-services__card {
    padding: 0;
  }
  .page-about .ab-services__card--1 { transform: rotate(-1.5deg) translateY(-12px); }
  .page-about .ab-services__card--2 { transform: rotate(1.5deg) translateY(12px); }
  .page-about .ab-services__card--3 { transform: rotate(-0.8deg) translateY(-6px); }
}