/* ===== 品牌档案页专属样式 ===== */
.page-about {
  --about-green-glow: 0 0 18px rgba(0, 255, 163, 0.25);
  --about-blue-glow: 0 0 18px rgba(0, 212, 255, 0.22);
  --about-gold-glow: 0 0 22px rgba(255, 184, 76, 0.18);
  overflow-x: clip;
  color: var(--text-main);
}

/* ===== Hero ===== */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 48px 0 44px;
  background:
    radial-gradient(ellipse 420px 260px at 88% 12%, rgba(0, 212, 255, 0.18), transparent 62%),
    radial-gradient(ellipse 380px 240px at 12% 88%, rgba(0, 255, 163, 0.16), transparent 60%),
    var(--bg-float);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -30px;
  left: -60px;
  width: 230px;
  height: 210px;
  background: linear-gradient(135deg, rgba(0, 255, 163, 0.2), rgba(0, 212, 255, 0.1));
  clip-path: polygon(8% 0, 92% 0, 100% 22%, 82% 100%, 0 100%);
  border-radius: var(--radius);
}

.page-about .about-hero::after {
  content: "2019";
  position: absolute;
  top: 64px;
  right: 18px;
  font-family: var(--font-data);
  font-size: 110px;
  font-weight: 800;
  line-height: 1;
  color: rgba(255, 255, 255, 0.045);
  letter-spacing: -6px;
  transform: rotate(-8deg);
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 24px;
}

.page-about .breadcrumb a {
  color: var(--blue);
  text-decoration: none;
  transition: color 0.25s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--green);
}

.page-about .about-hero-eyebrow {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--green);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.page-about .about-hero-title {
  font-family: var(--font-head);
  font-size: clamp(28px, 6vw, 46px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
  max-width: 920px;
  margin-bottom: 18px;
  transform: skew(-3deg);
  color: var(--text-main);
}

.page-about .about-hero-desc {
  max-width: 800px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-sub);
  margin-bottom: 30px;
}

.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  max-width: 720px;
  padding: 22px 26px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
}

.page-about .about-hero-stat {
  min-width: 120px;
}

.page-about .about-hero-num {
  display: block;
  font-family: var(--font-data);
  font-size: 30px;
  font-weight: 700;
  color: var(--green);
  text-shadow: var(--about-green-glow);
}

.page-about .about-hero-label {
  display: block;
  font-size: 13px;
  color: var(--text-sub);
  margin-top: 4px;
}

/* ===== 01 为什么叫 LD体育 ===== */
.page-about .about-name-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about .about-name-content {
  min-width: 0;
}

.page-about .about-name-cards {
  margin-top: 28px;
}

.page-about .about-name-aside {
  position: relative;
  align-self: start;
  padding: 32px 28px;
  border-radius: var(--radius);
  background:
    radial-gradient(ellipse 260px 160px at 90% 0%, rgba(0, 212, 255, 0.16), transparent 60%),
    var(--bg-float);
  border: 1px solid rgba(0, 212, 255, 0.2);
  overflow: hidden;
}

.page-about .about-name-aside-no {
  display: block;
  font-family: var(--font-head);
  font-size: 72px;
  font-weight: 900;
  line-height: 1;
  color: rgba(0, 255, 163, 0.14);
  margin-bottom: 14px;
  transform: skew(-6deg);
}

.page-about .about-name-aside p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-sub);
  margin-bottom: 12px;
}

.page-about .about-name-aside .btn {
  margin-top: 18px;
}

/* ===== 02 历程里程碑 ===== */
.page-about .about-milestone {
  position: relative;
}

.page-about .about-milestone-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--green), var(--blue));
  border-radius: 2px;
}

.page-about .about-timeline-item {
  position: relative;
  padding-left: 52px;
  margin-bottom: 28px;
}

.page-about .about-timeline-item:last-child {
  margin-bottom: 0;
}

.page-about .about-timeline-dot {
  position: absolute;
  top: 22px;
  left: 2px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--bg-dark);
  border: 3px solid var(--green);
  box-shadow: var(--about-green-glow);
}

.page-about .about-timeline-dot::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--green);
}

.page-about .about-timeline-card {
  padding: 22px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.page-about .about-timeline-item:hover .about-timeline-card {
  border-color: rgba(0, 255, 163, 0.6);
  box-shadow: var(--about-green-glow);
  transform: translateX(4px);
}

.page-about .about-timeline-year {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--blue);
  transition: color 0.3s ease;
}

.page-about .about-timeline-item:hover .about-timeline-year {
  color: var(--green);
}

.page-about .about-timeline-title {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 900;
  margin: 8px 0;
  transform: skew(-3deg);
}

.page-about .about-timeline-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-sub);
  margin: 0;
}

.page-about .about-timeline-extra {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 12px;
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--green);
  background: rgba(0, 255, 163, 0.08);
  border-radius: 999px;
}

.page-about .about-milestone-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .about-milestone-img,
.page-about .about-capability-img,
.page-about .about-commitment-img {
  display: block;
  max-width: 100%;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  object-fit: cover;
}

/* ===== 03 数据与内容能力 ===== */
.page-about .about-capability {
  position: relative;
  background:
    radial-gradient(ellipse 520px 300px at 10% 20%, rgba(0, 255, 163, 0.08), transparent 68%),
    radial-gradient(ellipse 420px 260px at 92% 72%, rgba(0, 212, 255, 0.1), transparent 62%);
}

.page-about .about-capability-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-bottom: 36px;
}

.page-about .about-capability-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.page-about .about-capability-stat {
  padding: 20px 18px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-capability-stat:hover {
  border-color: rgba(0, 212, 255, 0.5);
  box-shadow: var(--about-blue-glow);
}

.page-about .about-capability-stat .data-label {
  display: block;
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 8px;
}

.page-about .about-capability-stat .data-value {
  display: block;
  font-family: var(--font-data);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--green);
}

.page-about .about-update-cycle {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: 28px 24px;
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(0, 255, 163, 0.09), rgba(0, 212, 255, 0.05));
  border-left: 4px solid var(--green);
}

.page-about .about-update-title {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 900;
  margin: 0;
  transform: skew(-3deg);
}

.page-about .about-update-list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-update-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.page-about .about-update-day {
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--blue);
  background: rgba(0, 212, 255, 0.1);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.page-about .about-update-desc {
  color: var(--text-main);
}

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

/* ===== 04 生态合作 ===== */
.page-about .about-ecosystem {
  background: var(--bg-float);
}

.page-about .about-ecosystem-chain {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-about .about-ecosystem-step {
  flex: 1;
  padding: 28px 24px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-ecosystem-step:hover {
  border-color: rgba(0, 212, 255, 0.5);
  box-shadow: var(--about-blue-glow);
}

.page-about .about-ecosystem-index {
  display: inline-block;
  width: 36px;
  height: 36px;
  line-height: 30px;
  text-align: center;
  font-family: var(--font-data);
  font-size: 16px;
  font-weight: 700;
  color: var(--green);
  border: 2px solid rgba(0, 255, 163, 0.45);
  border-radius: 50%;
  margin-bottom: 14px;
}

.page-about .about-ecosystem-title {
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 900;
  margin: 0 0 10px;
  transform: skew(-3deg);
}

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

.page-about .about-ecosystem-arrow {
  font-family: var(--font-data);
  font-size: 28px;
  font-weight: 700;
  color: var(--blue);
  text-align: center;
  line-height: 1;
  margin: -6px 0;
  transform: rotate(90deg);
}

.page-about .about-ecosystem-note {
  max-width: 860px;
  margin: 28px auto 0;
  padding: 16px 20px;
  border-left: 3px solid var(--blue);
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-sub);
}

/* ===== 05 服务承诺 ===== */
.page-about .about-commitment-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about .about-commitment-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.page-about .about-commitment-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.page-about .about-commitment-item:last-child {
  border-bottom: none;
}

.page-about .about-commitment-index {
  font-family: var(--font-data);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  color: var(--bg-dark);
  -webkit-text-stroke: 1.5px var(--green);
}

.page-about .about-commitment-item-title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 900;
  margin: 0 0 8px;
  transform: skew(-3deg);
}

.page-about .about-commitment-item-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-sub);
  margin: 0;
}

.page-about .about-commitment-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .about-commitment-contact {
  padding: 22px 24px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 184, 76, 0.22);
}

.page-about .about-commitment-contact-title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 900;
  color: var(--gold);
  margin: 0 0 10px;
  text-shadow: var(--about-gold-glow);
}

.page-about .about-commitment-contact-line {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-sub);
  margin: 0;
}

/* ===== 收尾 CTA ===== */
.page-about .about-cta {
  position: relative;
  background: radial-gradient(ellipse 500px 240px at 50% 120%, rgba(0, 255, 163, 0.14), transparent 70%);
}

.page-about .about-cta-title {
  font-family: var(--font-head);
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 900;
  text-align: center;
  margin: 0 0 26px;
  transform: skew(-4deg);
}

.page-about .about-cta-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* ===== 桌面端布局增强 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 64px 0 56px;
  }

  .page-about .about-hero::after {
    font-size: 160px;
    right: 40px;
  }

  .page-about .about-update-cycle {
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 24px;
  }

  .page-about .about-update-note {
    max-width: 260px;
    text-align: right;
  }

  .page-about .about-commitment-list {
    grid-template-columns: 1fr 1fr;
    gap: 6px 28px;
  }

  .page-about .about-commitment-item {
    border-bottom-color: rgba(255, 255, 255, 0.07);
  }

  .page-about .about-ecosystem-chain {
    gap: 16px;
  }

  .page-about .about-ecosystem-arrow {
    transform: none;
    margin: auto 0;
  }
}

@media (min-width: 992px) {
  .page-about .about-name-layout {
    grid-template-columns: 1.6fr 1fr;
    gap: 64px;
    align-items: start;
  }

  .page-about .about-name-aside {
    position: sticky;
    top: 120px;
  }

  .page-about .about-milestone-grid {
    grid-template-columns: 1.4fr 1fr;
    gap: 56px;
    align-items: start;
  }

  .page-about .about-capability-grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-ecosystem-chain {
    flex-direction: row;
    align-items: stretch;
    gap: 24px;
  }

  .page-about .about-commitment-grid {
    grid-template-columns: 1.1fr 1fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-commitment-list {
    grid-template-columns: 1fr;
  }
}