.page-about {
  overflow-x: hidden;
}

/* ========== HERO 首屏框景 ========== */
.page-about .about-hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-highland-blue);
  color: var(--color-snow-white);
  overflow: hidden;
}
.page-about .about-hero-media {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.page-about .about-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-about .about-hero-veil {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(135deg, rgba(27, 79, 114, 0.9) 0%, rgba(27, 79, 114, 0.55) 48%, rgba(230, 126, 34, 0.28) 100%);
  -webkit-backdrop-filter: blur(1px);
  backdrop-filter: blur(1px);
}
.page-about .about-hero-frame {
  position: relative;
  z-index: 3;
  width: min(880px, 88vw);
  margin: 5rem auto 6.5rem;
  padding: clamp(1.75rem, 5vw, 4rem);
  border: 1px solid rgba(244, 246, 247, 0.4);
  background: rgba(23, 32, 42, 0.2);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  box-shadow: 0 24px 80px rgba(23, 32, 42, 0.28);
}
.page-about .about-hero-frame::before,
.page-about .about-hero-frame::after {
  content: "";
  position: absolute;
  width: 42px;
  height: 42px;
  pointer-events: none;
}
.page-about .about-hero-frame::before {
  top: -2px;
  left: -2px;
  border-top: 3px solid var(--color-orange);
  border-left: 3px solid var(--color-orange);
}
.page-about .about-hero-frame::after {
  bottom: -2px;
  right: -2px;
  border-bottom: 3px solid var(--color-orange);
  border-right: 3px solid var(--color-orange);
}
.page-about .about-hero-frame .breadcrumbs {
  margin-bottom: 0.75rem;
  color: rgba(244, 246, 247, 0.7);
  font-size: 0.85rem;
}
.page-about .about-hero-frame .breadcrumbs a {
  color: rgba(244, 246, 247, 0.85);
  text-decoration: none;
}
.page-about .about-hero-frame .breadcrumbs a:hover {
  color: var(--color-orange);
}
.page-about .about-hero-kicker {
  margin: 0.8rem 0 0.45rem;
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  color: var(--color-sky-blue);
  text-transform: uppercase;
}
.page-about .about-hero-title {
  margin: 0.4rem 0 1rem;
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.06;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-snow-white);
  font-size: clamp(1.7rem, 6vw, 2.9rem);
}
.page-about .about-hero-title-main {
  display: block;
  font-size: 0.6em;
  color: var(--color-sky-blue);
  margin-bottom: 0.22em;
  letter-spacing: 0.14em;
}
.page-about .about-hero-title-sub {
  display: block;
}
.page-about .about-hero-lead {
  font-size: clamp(0.95rem, 2.4vw, 1.12rem);
  line-height: 1.72;
  max-width: 36em;
  color: rgba(244, 246, 247, 0.88);
  margin-bottom: 1.5rem;
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.page-about .about-hero-strip {
  position: absolute;
  z-index: 4;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  padding: 1rem clamp(1rem, 4vw, 2rem);
  background: rgba(23, 32, 42, 0.55);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  font-family: var(--font-data);
  font-size: 0.74rem;
  color: var(--color-snow-white);
  letter-spacing: 0.12em;
  border-top: 2px solid rgba(230, 126, 34, 0.75);
}

/* ========== 章节通用 ========== */
.page-about .about-section {
  position: relative;
  padding: clamp(3rem, 8vw, 6rem) 0;
}
.page-about .about-section-head {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-bottom: 2.25rem;
}
.page-about .about-section-head h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.55rem, 4.5vw, 2.35rem);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0.35rem 0 0;
  line-height: 1.08;
  color: var(--color-ink);
}
.page-about .about-section-number {
  display: inline-block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(2.5rem, 8vw, 4.1rem);
  line-height: 1;
  color: var(--color-orange);
  opacity: 0.78;
  transform: rotate(-6deg) translateY(-2px);
  flex: 0 0 auto;
}

/* ========== 01 起点 ========== */
.page-about .about-origin {
  background: var(--color-snow-white);
  border-top: 8px solid var(--color-sky-blue);
}
.page-about .about-origin .container {
  max-width: 1180px;
}
.page-about .about-origin-grid {
  display: grid;
  gap: 2rem;
}
.page-about .about-origin-main p {
  margin-bottom: 1.25rem;
  line-height: 1.78;
  color: var(--color-ink);
  font-size: 1rem;
}
.page-about .about-origin-first::first-letter {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 3.1em;
  float: left;
  line-height: 0.78;
  padding-right: 0.28rem;
  color: var(--color-highland-blue);
}
.page-about .about-inline-link {
  display: inline-block;
  margin-top: 0.5rem;
  font-weight: 600;
  color: var(--color-highland-blue);
  text-decoration: none;
  border-bottom: 2px solid var(--color-orange);
  padding-bottom: 0.15rem;
  transition: color 0.2s, border-color 0.2s;
}
.page-about .about-inline-link:hover {
  color: var(--color-orange);
  border-color: var(--color-highland-blue);
}
.page-about .about-origin-quote {
  margin: 0;
  padding: 1.4rem 1.5rem;
  background: var(--color-glacier);
  border-left: 5px solid var(--color-orange);
  font-family: var(--font-heading);
  font-size: 1.08rem;
  line-height: 1.5;
  color: var(--color-highland-blue);
  transform: rotate(-1.2deg);
  box-shadow: 8px 8px 0 rgba(189, 195, 199, 0.3);
  align-self: start;
}
.page-about .about-origin-quote p {
  margin: 0;
}

/* ========== 02 直连乐游DIRECT赛事板块 ========== */
.page-about .about-direct {
  background: var(--color-highland-blue);
  color: var(--color-snow-white);
  overflow: hidden;
}
.page-about .about-direct::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg, rgba(255, 255, 255, 0.06) 0 2px, transparent 2px 26px);
  pointer-events: none;
}
.page-about .about-direct .container {
  max-width: 1180px;
  position: relative;
  z-index: 1;
}
.page-about .about-direct .about-section-number {
  color: var(--color-sky-blue);
  opacity: 1;
}
.page-about .about-direct .about-section-head h2 {
  color: var(--color-snow-white);
}
.page-about .about-direct-grid {
  display: grid;
  gap: 2rem;
}
.page-about .about-direct-copy > p {
  line-height: 1.72;
  color: rgba(244, 246, 247, 0.92);
  margin-bottom: 1.1rem;
}
.page-about .about-direct-copy strong {
  color: var(--color-orange);
  font-weight: 600;
}
.page-about .about-direct-points {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.7rem;
}
.page-about .about-direct-points li {
  background: rgba(244, 246, 247, 0.1);
  border-left: 3px solid var(--color-orange);
  padding: 0.72rem 0.9rem;
  font-size: 0.88rem;
  color: var(--color-snow-white);
  line-height: 1.35;
}
.page-about .about-direct-points span {
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--color-orange);
  font-size: 1.15rem;
  margin-right: 0.25rem;
}
.page-about .about-direct-figure {
  margin: 0;
}
.page-about .about-direct-figure img {
  width: 100%;
  height: auto;
  display: block;
  border: 4px solid rgba(230, 126, 34, 0.6);
  box-shadow: 14px 14px 0 rgba(93, 173, 226, 0.25);
}

/* ========== 03 里程碑 ========== */
.page-about .about-milestones {
  background: var(--color-snow-white);
  overflow: hidden;
}
.page-about .about-milestones-svg {
  display: none;
}
.page-about .about-timeline {
  position: relative;
  margin-top: 1.5rem;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0.5rem;
  bottom: 0.5rem;
  left: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-sky-blue), var(--color-grass-green), var(--color-orange));
  border-radius: 2px;
}
.page-about .about-milestone {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 1.5rem;
}
.page-about .about-milestone::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 1.15rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-snow-white);
  border: 3px solid var(--color-orange);
  z-index: 1;
  transition: background 0.25s, box-shadow 0.25s;
}
.page-about .about-milestone[open]::before {
  background: var(--color-orange);
  box-shadow: 0 0 0 6px rgba(230, 126, 34, 0.18);
}
.page-about .about-milestone summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.45rem 0.7rem;
  padding: 0.85rem 1rem;
  background: var(--color-snow-white);
  border: 1px solid var(--color-fog);
  border-left: 4px solid var(--color-orange);
  box-shadow: 0 2px 0 rgba(189, 195, 199, 0.22);
  transition: box-shadow 0.25s, transform 0.25s;
}
.page-about .about-milestone summary::-webkit-details-marker {
  display: none;
}
.page-about .about-milestone summary:hover {
  box-shadow: 0 6px 16px rgba(23, 32, 42, 0.1);
  transform: translateY(-1px);
}
.page-about .about-milestone[open] summary {
  border-left-color: var(--color-orange);
  box-shadow: 0 4px 14px rgba(23, 32, 42, 0.08);
}
.page-about .about-milestone-ver {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.42rem;
  color: var(--color-highland-blue);
  line-height: 1;
}
.page-about .about-milestone-year {
  font-family: var(--font-data);
  font-size: 0.76rem;
  color: var(--color-orange);
  background: var(--color-glacier);
  padding: 0.18rem 0.5rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.page-about .about-milestone-name {
  font-weight: 600;
  color: var(--color-ink);
  font-size: 0.94rem;
}
.page-about .about-milestone-body {
  padding: 1rem 1.2rem;
  margin-top: 0.5rem;
  background: var(--color-glacier);
  color: var(--color-ink);
  line-height: 1.7;
  border-left: 4px solid var(--color-orange);
  font-size: 0.92rem;
}
.page-about .about-milestone-body p {
  margin: 0;
}

/* ========== 04 团队与本地服务 ========== */
.page-about .about-team {
  background: var(--color-glacier);
}
.page-about .about-team-grid {
  display: grid;
  gap: 2rem;
}
.page-about .about-team-copy > p {
  line-height: 1.72;
  color: var(--color-ink);
}
.page-about .about-dept-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}
.page-about .about-dept-list li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.1rem 0;
  border-bottom: 1px solid rgba(127, 140, 141, 0.28);
}
.page-about .about-dept-list li:first-child {
  padding-top: 0;
}
.page-about .about-dept-list li:last-child {
  border-bottom: none;
}
.page-about .about-dept-icon {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  display: block;
  position: relative;
  background: var(--color-highland-blue);
  border-radius: 6px;
  box-shadow: 4px 4px 0 rgba(230, 126, 34, 0.45);
}
.page-about .about-dept-tech::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 2px solid var(--color-orange);
  transform: rotate(12deg);
}
.page-about .about-dept-content::before {
  content: "";
  position: absolute;
  inset: 11px 12px;
  border-top: 2px solid var(--color-sky-blue);
  border-bottom: 2px solid var(--color-sky-blue);
}
.page-about .about-dept-content::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 11px;
  bottom: 11px;
  width: 2px;
  background: var(--color-sky-blue);
  transform: translateX(-50%);
}
.page-about .about-dept-op::before,
.page-about .about-dept-op::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  background: var(--color-orange);
  border-radius: 50%;
}
.page-about .about-dept-op::before {
  top: 9px;
  left: 9px;
}
.page-about .about-dept-op::after {
  bottom: 9px;
  right: 9px;
}
.page-about .about-dept-list h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.08rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0.1rem 0 0.25rem;
  color: var(--color-highland-blue);
}
.page-about .about-dept-list p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.62;
  color: var(--color-slate);
}
.page-about .about-team-figure {
  margin: 0;
}
.page-about .about-team-figure img {
  width: 100%;
  height: auto;
  display: block;
  border: 4px solid var(--color-snow-white);
  box-shadow: 0 10px 28px rgba(27, 79, 114, 0.2);
}

/* ========== 05 价值观与愿景 ========== */
.page-about .about-values {
  background: var(--color-ink);
  color: var(--color-snow-white);
  text-align: center;
}
.page-about .about-values-number {
  position: absolute;
  top: 1.2rem;
  left: 1.2rem;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(2.4rem, 7vw, 3.8rem);
  line-height: 1;
  color: rgba(244, 246, 247, 0.1);
}
.page-about .about-values-tag {
  color: var(--color-orange);
}
.page-about .about-values h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  text-transform: uppercase;
  font-size: clamp(1.65rem, 4.5vw, 2.35rem);
  letter-spacing: 0.05em;
  margin: 0.4rem 0 1.1rem;
  color: var(--color-snow-white);
}
.page-about .about-values-lead {
  font-size: 1.02rem;
  line-height: 1.75;
  color: rgba(244, 246, 247, 0.84);
  max-width: 36em;
  margin: 0 auto 2rem;
}
.page-about .about-values-grid {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.8rem;
  text-align: left;
}
.page-about .about-value-item {
  background: rgba(244, 246, 247, 0.06);
  border: 1px solid rgba(244, 246, 247, 0.14);
  padding: 1.25rem 1.35rem;
  transition: background 0.25s, transform 0.25s;
}
.page-about .about-value-item:hover {
  background: rgba(244, 246, 247, 0.1);
  transform: translateX(4px);
}
.page-about .about-value-num {
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--color-orange);
  font-size: 1.05rem;
}
.page-about .about-value-item h3 {
  font-family: var(--font-heading);
  font-size: 1.12rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0.35rem 0 0.4rem;
  color: var(--color-snow-white);
}
.page-about .about-value-item p {
  margin: 0;
  font-size: 0.88rem;
  color: rgba(244, 246, 247, 0.74);
  line-height: 1.6;
}
.page-about .about-values-honor {
  background: rgba(241, 196, 15, 0.12);
  border-left: 4px solid var(--color-dusk);
  padding: 1rem 1.25rem;
  font-size: 0.88rem;
  color: var(--color-dusk);
  text-align: left;
  line-height: 1.65;
  margin-bottom: 1.6rem;
}
.page-about .about-values-closing {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.06em;
  color: var(--color-sky-blue);
  text-transform: uppercase;
  margin-bottom: 2rem;
  line-height: 1.3;
}
.page-about .about-values-cta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.page-about .about-values .btn-outline {
  border-color: rgba(244, 246, 247, 0.7);
  color: var(--color-snow-white);
}
.page-about .about-values .btn-outline:hover {
  background: rgba(244, 246, 247, 0.12);
}

/* ========== 桌面端布局增强 ========== */
@media (min-width: 768px) {
  .page-about .about-origin-grid {
    grid-template-columns: 1.6fr 1fr;
    align-items: start;
    gap: 2.5rem;
  }
  .page-about .about-direct-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 3rem;
  }
  .page-about .about-direct-points {
    gap: 0.9rem;
  }
  .page-about .about-team-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
    gap: 3rem;
  }
  .page-about .about-values-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
  .page-about .about-milestones-svg {
    display: block;
    position: absolute;
    top: 0;
    right: 0;
    width: 38%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
  }
  .page-about .about-milestones .container {
    position: relative;
    z-index: 1;
  }
}

@media (min-width: 1024px) {
  .page-about .about-milestone {
    width: 44%;
    padding-left: 0;
    margin-bottom: 2.2rem;
  }
  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-1px);
  }
  .page-about .about-milestone:nth-of-type(odd) {
    margin-right: 56%;
  }
  .page-about .about-milestone:nth-of-type(odd)::before {
    left: auto;
    right: -8px;
    top: 1.15rem;
  }
  .page-about .about-milestone:nth-of-type(even) {
    margin-left: 56%;
  }
  .page-about .about-milestone:nth-of-type(even)::before {
    left: -8px;
    right: auto;
    top: 1.15rem;
  }
  .page-about .about-hero-frame {
    width: min(920px, 82vw);
    padding: 3rem 3.8rem;
  }
}