.page-about {
  --about-side-w: 220px;
  --about-hero-line: rgba(0, 230, 118, 0.28);
}

.page-about .media-frame {
  overflow: hidden;
}

.page-about .media-frame img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ===== Hero 首屏 ===== */
.page-about .about-hero {
  position: relative;
  padding: clamp(32px, 6vw, 72px) 0 42px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(0, 230, 118, 0.07), transparent 56%),
    linear-gradient(180deg, var(--color-bg), #0D2240);
  border-bottom: 1px solid rgba(0, 230, 118, 0.24);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  width: 340px;
  height: 340px;
  right: -80px;
  top: -120px;
  border: 1px dashed var(--about-hero-line);
  border-radius: 10px;
  transform: rotate(18deg);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -60px;
  bottom: -120px;
  width: 220px;
  height: 220px;
  background: rgba(245, 183, 49, 0.08);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-about .about-hero-kicker {
  display: inline-block;
  font-family: var(--font-data), var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--color-lime);
  background: rgba(0, 230, 118, 0.08);
  border-left: 3px solid var(--color-lime);
  border-radius: 0 6px 6px 0;
  padding: 6px 12px;
  margin-bottom: 16px;
}

.page-about .about-hero-copy h1 {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4.6vw, 3.2rem);
  line-height: 1.2;
  color: var(--color-white);
  margin: 0 0 14px;
  max-width: 12em;
}

.page-about .about-hero-desc {
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 34em;
  margin-bottom: 18px;
}

.page-about .about-hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-hero-panel {
  position: relative;
  background: var(--color-panel);
  border: 1px solid rgba(0, 230, 118, 0.3);
  border-radius: 6px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

.page-about .about-hero-panel::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 44px;
  height: 44px;
  background: var(--color-lime);
  clip-path: polygon(0 0, 100% 100%, 0 100%);
}

.page-about .about-hero-panel-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.page-about .about-hero-panel-top span {
  color: var(--color-muted);
  font-size: 0.82rem;
}

.page-about .about-hero-panel-top strong {
  font-size: 1.5rem;
  color: var(--color-lime);
}

.page-about .about-hero-rule {
  height: 1px;
  background: linear-gradient(90deg, var(--color-lime), transparent);
}

.page-about .about-hero-panel-bottom {
  display: flex;
  gap: 24px;
}

.page-about .about-gauge {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-gauge .data-font {
  font-size: 1.7rem;
  color: var(--color-gold);
}

.page-about .about-gauge span:last-child {
  color: var(--color-muted);
  font-size: 0.78rem;
}

/* ===== 主体布局 ===== */
.page-about .about-layout {
  padding: clamp(28px, 5vw, 64px) 0;
}

.page-about .about-layout-inner {
  display: grid;
  gap: 32px;
}

.page-about .about-sidenav-sticky {
  position: static;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 14px 16px;
  background: rgba(10, 25, 47, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  z-index: 20;
}

.page-about .about-sidenav-label {
  font-family: var(--font-data), var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.page-about .about-sidenav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-sidenav-list li {
  margin: 0;
}

.page-about .about-sidenav-list a {
  display: inline-block;
  padding: 6px 12px;
  font-size: 0.9rem;
  color: var(--color-muted);
  border-radius: 999px;
  transition: color var(--ease-fast), background var(--ease-fast);
}

.page-about .about-sidenav-list a:hover {
  color: var(--color-white);
  background: rgba(0, 230, 118, 0.1);
}

.page-about .about-sidenav-list a.is-section-active {
  color: var(--color-bg);
  background: var(--color-lime);
  font-weight: 700;
}

.page-about .about-sidenav-foot {
  display: none;
}

.page-about .about-main {
  display: flex;
  flex-direction: column;
  gap: clamp(48px, 7vw, 88px);
}

.page-about .about-section {
  position: relative;
  scroll-margin-top: 96px;
}

.page-about .about-section .section-tag,
.page-about .about-next .section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--color-lime);
}

.page-about .about-section .section-tag::before,
.page-about .about-next .section-tag::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--color-lime);
}

.page-about .about-section h2 {
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 3.2vw, 2.1rem);
  line-height: 1.3;
  color: var(--color-white);
  margin: 8px 0 12px;
}

.page-about .about-section-lead {
  font-family: var(--font-head);
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  color: var(--color-lime);
  margin: 4px 0 10px;
}

.page-about .about-section-desc {
  color: var(--color-muted);
  line-height: 1.8;
  max-width: 46em;
  margin-bottom: 24px;
}

/* ===== 品牌使命 ===== */
.page-about .about-mission-grid {
  display: grid;
  gap: 24px;
  margin-top: 20px;
}

.page-about .about-mission-media {
  width: 100%;
}

.page-about .about-value-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-value-list li {
  display: grid;
  grid-template-columns: 44px 1fr;
  grid-template-areas:
    "num title"
    "num desc";
  column-gap: 14px;
  padding: 16px 14px;
  background: var(--color-panel);
  border-left: 2px solid var(--color-lime);
  border-radius: 0 6px 6px 0;
}

.page-about .about-value-list li .data-font {
  grid-area: num;
  font-size: 1rem;
  color: var(--color-gold);
}

.page-about .about-value-list li strong {
  grid-area: title;
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: 2px;
}

.page-about .about-value-list li p {
  grid-area: desc;
  color: var(--color-muted);
  font-size: 0.85rem;
  line-height: 1.6;
  margin: 0;
}

/* ===== 发展历程时间线 ===== */
.page-about .timeline-list {
  position: relative;
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-about .timeline-list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-lime), var(--color-panel));
}

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

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

.page-about .timeline-mark {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .timeline-dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 3px solid var(--color-lime);
  box-sizing: border-box;
}

.page-about .timeline-mark .data-font {
  color: var(--color-gold);
  font-size: 1.1rem;
  font-weight: 700;
}

.page-about .timeline-content {
  padding: 16px 18px;
  border-left: 2px solid var(--color-lime);
}

.page-about .timeline-content h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  color: var(--color-white);
  margin: 0 0 6px;
}

.page-about .timeline-content p {
  color: var(--color-muted);
  font-size: 0.88rem;
  line-height: 1.7;
  margin: 0;
}

/* ===== 资质与认证 ===== */
.page-about .cert-layout {
  display: grid;
  gap: 24px;
  align-items: start;
}

.page-about .cert-media {
  width: min(320px, 100%);
  margin: 0;
}

.page-about .cert-card-list {
  display: grid;
  gap: 16px;
}

.page-about .cert-card {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  grid-template-areas:
    "seal title"
    "seal desc";
  column-gap: 16px;
  padding: 20px;
}

.page-about .cert-card .cert-seal {
  grid-area: seal;
  width: 52px;
  height: 52px;
  box-sizing: border-box;
  border: 2px solid var(--color-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-gold);
  background: rgba(245, 183, 49, 0.08);
  text-align: center;
  line-height: 1.2;
  padding: 0 4px;
}

.page-about .cert-card h3 {
  grid-area: title;
  font-family: var(--font-head);
  font-size: 1rem;
  color: var(--color-white);
  margin: 0 0 6px;
}

.page-about .cert-card p {
  grid-area: desc;
  color: var(--color-muted);
  font-size: 0.85rem;
  line-height: 1.7;
  margin: 0;
}

.page-about .about-partner {
  margin-top: 24px;
  padding: 16px 20px;
  border-left: 3px solid var(--color-gold);
}

.page-about .about-partner p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-about .about-partner strong {
  color: var(--color-white);
}

/* ===== 全球覆盖与用户规模 ===== */
.page-about .about-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-about .about-stat {
  position: relative;
  overflow: hidden;
  background: var(--color-panel);
  border-radius: 8px;
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-stat::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 32px;
  height: 32px;
  background: var(--color-lime);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  opacity: 0.92;
}

.page-about .about-stat .data-value {
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  font-weight: 700;
}

.page-about .about-stat .data-label {
  color: var(--color-muted);
  font-size: 0.82rem;
}

.page-about .data-value--lime {
  color: var(--color-lime);
}

.page-about .data-value--gold {
  color: var(--color-gold);
}

.page-about .about-platform {
  margin-top: 16px;
  padding: 18px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-about .about-platform-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-platform p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.88rem;
}

/* ===== 团队与理念 ===== */
.page-about .about-team-grid {
  display: grid;
  gap: 24px;
  margin-top: 16px;
}

.page-about .about-team-media {
  margin: 0;
}

.page-about .about-team-content p {
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 14px;
}

.page-about .team-principles {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.page-about .team-principle {
  display: grid;
  grid-template-columns: 44px 64px 1fr;
  align-items: center;
  gap: 10px;
  background: var(--color-panel);
  padding: 12px 14px;
  border-radius: 6px;
}

.page-about .team-principle .data-font {
  color: var(--color-gold);
  font-size: 0.9rem;
}

.page-about .team-principle strong {
  color: var(--color-lime);
  font-family: var(--font-head);
  font-size: 1rem;
}

.page-about .team-principle em {
  font-style: normal;
  color: var(--color-muted);
  font-size: 0.85rem;
}

/* ===== 下一步行动 ===== */
.page-about .about-next {
  padding: 0 0 clamp(48px, 8vw, 88px);
}

.page-about .about-next-panel {
  position: relative;
  background: linear-gradient(135deg, var(--color-panel), var(--color-bg));
  border: 1px solid rgba(0, 230, 118, 0.35);
  border-radius: 10px;
  padding: clamp(24px, 5vw, 48px);
  display: grid;
  gap: 24px;
  overflow: hidden;
}

.page-about .about-next-panel::before {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 180px;
  height: 180px;
  border: 2px dashed rgba(0, 230, 118, 0.35);
  border-radius: 12px;
  transform: rotate(24deg);
}

.page-about .about-next-panel > * {
  position: relative;
  z-index: 1;
}

.page-about .about-next-panel h2 {
  font-family: var(--font-head);
  font-size: clamp(1.3rem, 2.8vw, 1.9rem);
  color: var(--color-white);
  margin: 4px 0 8px;
}

.page-about .about-next-panel p {
  color: var(--color-muted);
  margin: 0;
  line-height: 1.7;
}

.page-about .about-next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== 响应式增强 ===== */
@media (min-width: 760px) {
  .page-about .about-hero-grid {
    grid-template-columns: 1.35fr 0.65fr;
    align-items: end;
    gap: 40px;
  }

  .page-about .about-mission-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: stretch;
  }

  .page-about .timeline-item {
    padding-left: 36px;
  }

  .page-about .timeline-dot {
    top: 8px;
  }

  .page-about .timeline-content {
    padding: 20px 24px;
  }

  .page-about .about-stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-next-panel {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .about-layout-inner {
    grid-template-columns: var(--about-side-w) 1fr;
    align-items: start;
    gap: 56px;
  }

  .page-about .about-sidenav-sticky {
    position: sticky;
    top: calc(var(--topbar-h) + var(--header-h) + 16px);
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 0;
    background: transparent;
    border: 0;
  }

  .page-about .about-sidenav-list {
    flex-direction: column;
    gap: 6px;
    width: 100%;
  }

  .page-about .about-sidenav-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 10px 14px;
    border-radius: 6px;
    border-left: 2px solid transparent;
  }

  .page-about .about-sidenav-list a.is-section-active {
    background: rgba(0, 230, 118, 0.1);
    color: var(--color-lime);
    border-left-color: var(--color-lime);
    font-weight: 700;
  }

  .page-about .about-sidenav-foot {
    display: block;
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-muted);
    font-size: 0.82rem;
    line-height: 1.6;
  }

  .page-about .about-sidenav-foot .data-font {
    display: block;
    color: var(--color-gold);
    font-size: 1.6rem;
    margin-bottom: 4px;
  }

  .page-about .cert-layout {
    grid-template-columns: 300px 1fr;
  }

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

  .page-about .about-team-grid {
    grid-template-columns: 0.96fr 1.04fr;
    align-items: center;
  }
}