/* ===== 品牌故事页 · page-about ===== */
.page-about {
  --about-flame: linear-gradient(135deg, var(--color-primary) 0%, var(--color-flame) 100%);
  --about-border: 3px solid rgba(255, 106, 0, 0.35);
  position: relative;
  font-family: var(--font-body);
  color: var(--color-paper);
  background: var(--color-deep-navy);
  overflow-x: hidden;
}

/* ---------- 首屏英雄 ---------- */
.page-about .hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: 5.5rem 0 4rem;
  overflow: hidden;
  isolation: isolate;
}

.page-about .hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  pointer-events: none;
}

.page-about .hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.3;
  filter: saturate(1.2) contrast(1.08);
}

.page-about .hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 15, 30, 0.96) 0%, rgba(10, 15, 30, 0.82) 45%, rgba(10, 15, 30, 0.45) 100%),
    radial-gradient(circle at 72% 28%, rgba(255, 106, 0, 0.18) 0%, transparent 55%);
}

.page-about .hero::before {
  content: "";
  position: absolute;
  top: -8%;
  right: -8%;
  width: 56%;
  height: 62%;
  background: linear-gradient(135deg, rgba(255, 106, 0, 0.18) 0%, transparent 70%);
  transform: rotate(14deg);
  z-index: -1;
  pointer-events: none;
}

.page-about .hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
}

.page-about .hero-orbit {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 3.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(255, 106, 0, 0.25);
}

.page-about .mono-label {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.83rem;
  color: rgba(245, 245, 245, 0.6);
}

.page-about .breadcrumb-item {
  color: rgba(245, 245, 245, 0.65);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .breadcrumb-item:hover {
  color: var(--color-primary);
}

.page-about .breadcrumb-item.current {
  color: var(--color-primary);
}

.page-about .breadcrumb-sep {
  color: rgba(245, 245, 245, 0.35);
}

.page-about .hero-grid {
  display: grid;
  gap: 2.25rem;
  align-items: center;
}

.page-about .hero-copy {
  max-width: 34rem;
}

.page-about .hero-kicker {
  margin: 0 0 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.page-about .hero-title {
  margin: 0 0 0.9rem;
  font-family: var(--font-headline);
  font-size: clamp(2.3rem, 6vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: 0.01em;
  color: var(--color-white);
}

.page-about .hero-lead {
  margin: 0 0 1rem;
  font-size: clamp(1.05rem, 2.2vw, 1.45rem);
  font-weight: 700;
  color: var(--color-gold);
}

.page-about .hero-desc {
  margin: 0 0 1.75rem;
  font-size: 0.98rem;
  line-height: 1.8;
  color: rgba(245, 245, 245, 0.82);
  max-width: 30em;
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.page-about .hero-actions .btn {
  border-radius: 0;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  padding: 0.75rem 1.6rem;
}

.page-about .hero-year {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0.5rem 0;
}

.page-about .year-big {
  font-family: var(--font-headline);
  font-size: clamp(5.5rem, 18vw, 14rem);
  line-height: 0.85;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  text-shadow: 0 0 80px rgba(255, 106, 0, 0.35), 0 0 20px rgba(255, 106, 0, 0.2);
}

.page-about .year-caption {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
}

/* ---------- 章节通用 ---------- */
.page-about .page-section {
  position: relative;
  padding: 4.5rem 0;
}

.page-about .section-heading {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2.75rem;
  padding-bottom: 0.8rem;
  border-bottom: 2px solid rgba(255, 106, 0, 0.35);
}

.page-about .section-index {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.06em;
}

.page-about .section-title {
  margin: 0;
  font-family: var(--font-headline);
  font-size: clamp(1.7rem, 3.2vw, 2.5rem);
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--color-white);
}

/* ---------- 01 起源 ---------- */
.page-about .origin {
  background: linear-gradient(180deg, rgba(27, 42, 74, 0) 0%, rgba(27, 42, 74, 0.4) 100%);
}

.page-about .origin-content {
  display: grid;
  gap: 2.25rem;
  align-items: start;
}

.page-about .origin-copy p {
  margin: 0 0 1.1rem;
  line-height: 1.85;
  color: rgba(245, 245, 245, 0.86);
  font-size: 0.97rem;
}

.page-about .origin-copy p:first-child {
  font-size: 1.14rem;
  font-weight: 600;
  color: var(--color-white);
}

.page-about .origin-card {
  position: relative;
  background: var(--color-ink-blue);
  border: 3px solid var(--color-primary);
  box-shadow: 10px 10px 0 rgba(255, 106, 0, 0.12);
  padding: 1.8rem;
  margin-right: 1.5rem;
}

.page-about .origin-card::before {
  content: "";
  position: absolute;
  top: -3px;
  right: -3px;
  width: 32%;
  height: 6px;
  background: var(--color-gold);
}

.page-about .origin-card-year {
  display: block;
  font-family: var(--font-headline);
  font-size: 3.2rem;
  line-height: 1;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.page-about .origin-card-title {
  display: block;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 0.8rem;
}

.page-about .origin-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(245, 245, 245, 0.76);
}

.page-about .origin-platform {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.8rem;
  margin-top: 3rem;
}

.page-about .platform-item {
  background: rgba(255, 106, 0, 0.08);
  border: 2px solid rgba(255, 106, 0, 0.4);
  padding: 1.3rem 1rem;
  text-align: center;
}

.page-about .platform-num {
  display: block;
  font-family: var(--font-headline);
  font-size: 1.95rem;
  line-height: 1.1;
  color: var(--color-gold);
}

.page-about .platform-label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.82rem;
  color: rgba(245, 245, 245, 0.7);
}

/* ---------- 02 发展足迹 / 时间线 ---------- */
.page-about .journey {
  background: var(--color-deep-navy);
}

.page-about .timeline {
  position: relative;
  margin-top: 2.5rem;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 12px;
  bottom: 12px;
  width: 4px;
  border-radius: 4px;
  background: var(--about-flame);
}

.page-about .timeline::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 18px;
  width: 20px;
  height: 20px;
  background: var(--color-gold);
  border: 2px solid var(--color-primary);
  transform: rotate(45deg);
  z-index: 1;
}

.page-about .timeline-item {
  position: relative;
  padding: 0 0 3rem 3.25rem;
}

.page-about .timeline-item:last-child {
  padding-bottom: 0.5rem;
}

.page-about .tl-point {
  position: absolute;
  left: 6px;
  top: 6px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-deep-navy);
  border: 4px solid var(--color-primary);
  z-index: 2;
}

.page-about .tl-point::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--color-gold);
}

.page-about .tl-year {
  display: block;
  margin-bottom: 0.45rem;
  font-family: var(--font-mono);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.08em;
}

.page-about .tl-card {
  background: var(--color-ink-blue);
  border-left: 4px solid var(--color-primary);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.3);
  padding: 1.25rem 1.5rem;
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.page-about .tl-card:hover {
  border-left-color: var(--color-gold);
  background: #213357;
  box-shadow: 8px 8px 0 rgba(255, 106, 0, 0.14);
}

.page-about .tl-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.08rem;
  color: var(--color-white);
}

.page-about .tl-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(245, 245, 245, 0.8);
}

/* ---------- 03 订阅服务体系 ---------- */
.page-about .subscription {
  background: linear-gradient(168deg, #0D1626 0%, #101E33 55%, var(--color-deep-navy) 100%);
  overflow: hidden;
}

.page-about .subscription::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 34%;
  height: 100%;
  background: linear-gradient(180deg, rgba(255, 106, 0, 0.09) 0%, transparent 60%);
  border-left: 3px solid rgba(255, 106, 0, 0.22);
  pointer-events: none;
}

.page-about .subs-grid {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2.25rem;
}

.page-about .subs-card {
  position: relative;
  background: var(--color-ink-blue);
  border: 4px solid rgba(255, 106, 0, 0.45);
  box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.32);
  padding: 1.6rem 1.6rem 1.8rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.page-about .subs-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 13px 13px 0 rgba(255, 106, 0, 0.16);
}

.page-about .subs-gold {
  border-color: var(--color-gold);
  background: linear-gradient(135deg, #1F2A3D 0%, #2A2135 100%);
}

.page-about .subs-gold:hover {
  box-shadow: 13px 13px 0 rgba(255, 215, 0, 0.16);
}

.page-about .subs-tag {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(255, 106, 0, 0.15);
  color: var(--color-primary);
  border: 1px solid rgba(255, 106, 0, 0.5);
}

.page-about .subs-gold .subs-tag {
  background: rgba(255, 215, 0, 0.12);
  color: var(--color-gold);
  border-color: rgba(255, 215, 0, 0.5);
}

.page-about .subs-card h3 {
  margin: 0 0 0.7rem;
  font-family: var(--font-headline);
  font-size: 1.32rem;
  line-height: 1.15;
  color: var(--color-white);
  letter-spacing: 0.02em;
}

.page-about .subs-card p {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(245, 245, 245, 0.78);
}

.page-about .subs-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .subs-list li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.45rem;
  font-size: 0.88rem;
  color: rgba(245, 245, 245, 0.85);
}

.page-about .subs-list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.page-about .subs-media {
  margin: 2.25rem 0;
}

.page-about .subs-media img,
.page-about .global-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 3px solid var(--color-ink-blue);
  box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.35);
}

.page-about .subs-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: rgba(255, 106, 0, 0.08);
  border: 2px solid rgba(255, 106, 0, 0.35);
  padding: 1.25rem 1.5rem;
}

.page-about .subs-cta p {
  margin: 0;
  max-width: 24em;
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(245, 245, 245, 0.85);
}

/* ---------- 04 全球华人的体育连接 ---------- */
.page-about .global-connect {
  background: var(--color-deep-navy);
  padding-bottom: 5.5rem;
}

.page-about .global-grid {
  display: grid;
  gap: 2.25rem;
  align-items: start;
}

.page-about .global-copy p {
  margin: 0 0 1rem;
  line-height: 1.85;
  color: rgba(245, 245, 245, 0.86);
  font-size: 0.97rem;
}

.page-about .global-stats {
  display: grid;
  gap: 0.85rem;
}

.page-about .stat-row {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  background: rgba(255, 106, 0, 0.07);
  border-left: 4px solid var(--color-primary);
  padding: 0.85rem 1.2rem;
}

.page-about .stat-num {
  min-width: 5.2em;
  font-family: var(--font-headline);
  font-size: 1.85rem;
  line-height: 1.1;
  color: var(--color-gold);
}

.page-about .stat-label {
  font-size: 0.9rem;
  color: rgba(245, 245, 245, 0.8);
}

.page-about .global-media {
  margin-top: 2.5rem;
}

.page-about .global-media img {
  border-width: 4px;
}

.page-about .global-contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  margin-top: 2.75rem;
  padding-top: 2rem;
  border-top: 2px solid rgba(255, 106, 0, 0.3);
}

.page-about .global-contact p {
  flex: 1;
  min-width: 220px;
  margin: 0;
  color: rgba(245, 245, 245, 0.8);
}

.page-about .global-trust {
  margin: 2.25rem 0 0;
  padding: 1rem 1.25rem;
  background: rgba(255, 215, 0, 0.06);
  border: 1px solid rgba(255, 215, 0, 0.3);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  text-align: center;
  color: var(--color-gold);
}

/* ---------- 桌面端增强 ---------- */
@media (min-width: 768px) {
  .page-about .hero {
    min-height: 82vh;
    padding-top: 6.5rem;
  }

  .page-about .hero-grid {
    grid-template-columns: 1fr auto;
    gap: 3rem;
  }

  .page-about .hero-year {
    align-items: flex-end;
    text-align: right;
    padding-right: 1.25rem;
  }

  .page-about .year-big {
    font-size: clamp(7rem, 16vw, 15rem);
  }

  .page-about .origin-content {
    grid-template-columns: 1fr 360px;
    gap: 3rem;
  }

  .page-about .origin-platform {
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
  }

  .page-about .tl-card {
    transform: skewX(-1.5deg);
  }

  .page-about .tl-card h3,
  .page-about .tl-card p {
    transform: skewX(1.5deg);
  }

  .page-about .timeline-item:nth-child(even) {
    padding-left: 4.5rem;
  }

  .page-about .timeline-item:nth-child(even) .tl-card {
    transform: skewX(2deg);
  }

  .page-about .timeline-item:nth-child(even) .tl-card h3,
  .page-about .timeline-item:nth-child(even) .tl-card p {
    transform: skewX(-2deg);
  }

  .page-about .subs-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .page-about .global-grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }

  .page-about .subscription::before {
    width: 28%;
  }
}

@media (min-width: 1100px) {
  .page-about .hero {
    padding-top: 6rem;
  }

  .page-about .hero-grid {
    gap: 4rem;
  }

  .page-about .hero-desc {
    font-size: 1.05rem;
  }

  .page-about .origin-content {
    gap: 4rem;
  }

  .page-about .global-contact {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}