.page-about {
  --about-grid-line: rgba(126, 200, 227, 0.06);
  --about-grid-strong: rgba(126, 200, 227, 0.1);
  --about-glow-orange: rgba(255, 107, 53, 0.16);
  --about-glow-green: rgba(57, 255, 20, 0.12);
  --about-card-shadow: 0 8px 24px rgba(6, 15, 36, 0.45);
  background: var(--color-navy);
  color: var(--color-off);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding: 28px 0 4px;
  font-family: var(--font-solid);
  font-size: 0.85rem;
  color: var(--color-gray);
}

.page-about .breadcrumbs__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin: 0;
  padding: 0;
}

.page-about .breadcrumbs__link {
  color: var(--color-ice);
  text-decoration: none;
  transition: color var(--ease) ease;
}

.page-about .breadcrumbs__link:hover,
.page-about .breadcrumbs__link:focus-visible {
  color: var(--color-orange);
}

.page-about .breadcrumbs__item[aria-current="page"] {
  color: var(--color-orange);
  font-weight: 600;
}

.page-about .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 12px;
  color: var(--color-gray);
}

/* ---------- 品牌身份 Hero ---------- */
.page-about .about-hero {
  position: relative;
  padding: 48px 0 72px;
  background:
    linear-gradient(135deg, transparent 0%, transparent 58%, rgba(30, 58, 95, 0.55) 58%, rgba(30, 58, 95, 0.75) 100%),
    var(--color-navy);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  gap: 40px;
  align-items: center;
}

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

.page-about .about-hero__eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-green);
  border: 1px solid rgba(57, 255, 20, 0.3);
  background: var(--about-glow-green);
  padding: 5px 14px;
  margin-bottom: 20px;
}

.page-about .about-hero h1 {
  font-family: var(--font-solid);
  font-size: clamp(1.7rem, 3.4vw, 2.7rem);
  font-weight: 900;
  line-height: 1.22;
  color: var(--color-off);
  margin: 0 0 14px;
  max-width: 740px;
  letter-spacing: -0.01em;
}

.page-about .about-hero__lead {
  font-family: var(--font-impact);
  font-size: clamp(1.25rem, 2.3vw, 1.7rem);
  color: var(--color-orange);
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

.page-about .about-hero__text {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-ice);
  max-width: 640px;
  margin-bottom: 30px;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 0 0 30px;
  padding: 0;
}

.page-about .about-hero__stat {
  background: var(--color-steel);
  border: 1px solid rgba(126, 200, 227, 0.2);
  border-left: 4px solid var(--color-orange);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--about-card-shadow);
  transition: transform var(--ease) ease, border-color var(--ease) ease;
}

.page-about .about-hero__stat:hover {
  transform: translateY(-3px);
  border-color: var(--color-green);
}

.page-about .about-hero__stat dt {
  font-size: 0.78rem;
  color: var(--color-gray);
  margin-bottom: 4px;
  font-family: var(--font-solid);
}

.page-about .about-hero__stat dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-green);
  line-height: 1.2;
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  clip-path: polygon(2% 3%, 100% 0, 98% 100%, 0 97%);
  background: var(--color-steel);
}

.page-about .about-hero__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: none;
}

.page-about .about-hero__media::after {
  content: "46 LEAGUES / 1 SCREEN";
  position: absolute;
  right: 18px;
  bottom: 14px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--color-gold);
  background: rgba(6, 15, 36, 0.78);
  border: 1px solid rgba(255, 195, 0, 0.35);
  padding: 5px 12px;
}

/* ---------- 发展历程 ---------- */
.page-about .section--alt {
  background-color: var(--color-steel);
  border-top: 1px solid rgba(126, 200, 227, 0.14);
  border-bottom: 1px solid rgba(126, 200, 227, 0.14);
}

.page-about .section-heading {
  position: relative;
  padding-left: 18px;
  margin-bottom: 34px;
}

.page-about .section-heading::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background: linear-gradient(to bottom, var(--color-orange), var(--color-green));
}

.page-about .section-heading__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-green);
  margin-bottom: 8px;
}

.page-about .section-heading__title {
  font-family: var(--font-solid);
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  font-weight: 900;
  color: var(--color-off);
  margin-bottom: 10px;
  line-height: 1.3;
}

.page-about .section-heading__desc {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-ice);
  max-width: 680px;
  margin-bottom: 0;
}

.page-about .about-timeline {
  padding: 64px 0 72px;
}

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-orange), var(--color-green), rgba(126, 200, 227, 0.25));
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 30px 52px;
}

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

.page-about .timeline__dot {
  position: absolute;
  left: 8px;
  top: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-navy);
  border: 3px solid var(--color-green);
  box-shadow: 0 0 0 5px var(--about-glow-green), 0 0 16px rgba(57, 255, 20, 0.25);
}

.page-about .timeline__card {
  background: var(--color-navy);
  border: 1px solid rgba(126, 200, 227, 0.18);
  border-left: 4px solid var(--color-orange);
  border-radius: var(--radius);
  padding: 18px 22px;
  box-shadow: var(--about-card-shadow);
  transition: transform var(--ease) ease, box-shadow var(--ease) ease;
}

.page-about .timeline__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(6, 15, 36, 0.6);
}

.page-about .timeline__version {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-green);
  margin-bottom: 8px;
  letter-spacing: 0.08em;
}

.page-about .timeline__name {
  font-family: var(--font-solid);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-off);
  margin-bottom: 8px;
}

.page-about .timeline__desc {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-ice);
  margin-bottom: 0;
}

/* ---------- 资质与认证 ---------- */
.page-about .about-cert {
  padding: 64px 0 72px;
}

.page-about .cert-grid {
  display: grid;
  gap: 20px;
  margin-top: 8px;
}

.page-about .cert-card {
  position: relative;
  background: var(--color-steel);
  border: 1px solid rgba(126, 200, 227, 0.2);
  border-radius: var(--radius);
  padding: 26px 22px 24px;
  overflow: hidden;
  box-shadow: var(--about-card-shadow);
  transition: transform var(--ease) ease, border-color var(--ease) ease;
}

.page-about .cert-card:hover,
.page-about .cert-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--color-green);
}

.page-about .cert-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-style: solid;
  border-width: 0 34px 34px 0;
  border-color: transparent var(--color-gold) transparent transparent;
}

.page-about .cert-card__title {
  font-family: var(--font-solid);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-off);
  margin-bottom: 12px;
}

.page-about .cert-card__title::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--color-green);
  margin-right: 10px;
  transform: rotate(45deg);
  vertical-align: middle;
}

.page-about .cert-card__text {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--color-ice);
  margin-bottom: 0;
}

/* ---------- 团队与组织 ---------- */
.page-about .about-team {
  padding: 64px 0 72px;
}

.page-about .team-layout {
  display: grid;
  gap: 28px;
  margin-top: 8px;
}

.page-about .team-layout__media {
  margin: 0;
  border: 2px solid var(--color-navy);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--about-card-shadow);
}

.page-about .team-layout__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .team-layout__radar {
  background: var(--color-navy);
  border: 1px solid rgba(126, 200, 227, 0.18);
  border-radius: var(--radius);
  padding: 20px 12px 14px;
  box-shadow: var(--about-card-shadow);
}

.page-about .team-radar {
  display: block;
  width: 100%;
  height: auto;
  max-width: 440px;
  margin: 0 auto;
}

.page-about .team-radar__grid {
  fill: none;
  stroke: rgba(126, 200, 227, 0.2);
  stroke-width: 1px;
}

.page-about .team-radar__axis {
  stroke: rgba(126, 200, 227, 0.14);
  stroke-width: 1px;
}

.page-about .team-radar__area {
  fill: rgba(57, 255, 20, 0.22);
  stroke: var(--color-green);
  stroke-width: 2px;
  transition: fill var(--ease) ease;
}

.page-about .team-layout__radar:hover .team-radar__area {
  fill: rgba(57, 255, 20, 0.34);
}

.page-about .team-radar__point {
  fill: var(--color-orange);
  stroke: var(--color-off);
  stroke-width: 1.5px;
}

.page-about .team-radar__label {
  fill: var(--color-ice);
  font-family: var(--font-solid);
  font-size: 13px;
  font-weight: 700;
}

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

.page-about .team-list__item {
  display: grid;
  grid-template-columns: 44px 1fr;
  grid-template-rows: auto auto;
  column-gap: 14px;
  row-gap: 3px;
  padding: 16px 2px;
  border-bottom: 1px dashed rgba(126, 200, 227, 0.18);
}

.page-about .team-list__item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-about .team-list__num {
  grid-column: 1;
  grid-row: 1 / 3;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-orange);
}

.page-about .team-list__label {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-solid);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-off);
}

.page-about .team-list__item p {
  grid-column: 2;
  grid-row: 2;
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--color-ice);
  margin: 0;
}

/* ---------- 生态与荣誉 ---------- */
.page-about .about-eco {
  padding: 64px 0 72px;
  position: relative;
}

.page-about .about-eco::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.page-about .eco-layout {
  position: relative;
  display: grid;
  gap: 28px;
  margin-top: 8px;
}

.page-about .eco-layout__content {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .eco-panel {
  background: var(--color-steel);
  border: 1px solid rgba(126, 200, 227, 0.2);
  border-radius: var(--radius);
  padding: 24px 22px;
  box-shadow: var(--about-card-shadow);
  transition: transform var(--ease) ease;
}

.page-about .eco-panel:hover {
  transform: translateY(-3px);
}

.page-about .eco-panel:last-child {
  border-left: 4px solid var(--color-gold);
}

.page-about .eco-panel__title {
  font-family: var(--font-solid);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-orange);
  margin-top: 0;
  margin-bottom: 16px;
}

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

.page-about .eco-list__item {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--color-ice);
  padding: 9px 0;
  border-bottom: 1px dashed rgba(126, 200, 227, 0.14);
  font-family: var(--font-solid);
}

.page-about .eco-list__item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-about .eco-list__item strong {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--color-green);
  margin-right: 6px;
}

.page-about .eco-list--gold .eco-list__item {
  color: var(--color-off);
  font-weight: 600;
}

.page-about .eco-list--gold .eco-list__item::before {
  content: "◆ ";
  color: var(--color-gold);
  font-size: 0.85em;
}

.page-about .eco-layout__media {
  margin: 0;
  border: 2px solid var(--color-steel);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--about-card-shadow);
}

.page-about .eco-layout__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

/* ---------- 品牌信任结语 ---------- */
.page-about .about-trust {
  padding: 72px 0;
  background: var(--color-navy-deep);
  border-top: 4px solid var(--color-orange);
  position: relative;
}

.page-about .about-trust::before,
.page-about .about-trust::after {
  content: "";
  position: absolute;
  top: 0;
  width: 22%;
  height: 4px;
  background: var(--color-green);
}

.page-about .about-trust::before {
  left: 12%;
}

.page-about .about-trust::after {
  right: 12%;
  width: 8%;
  background: var(--color-gold);
}

.page-about .about-trust__inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.page-about .about-trust__title {
  font-family: var(--font-solid);
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  font-weight: 900;
  color: var(--color-off);
  margin-top: 0;
  margin-bottom: 18px;
  line-height: 1.3;
}

.page-about .about-trust__text {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-ice);
  margin-bottom: 28px;
}

.page-about .about-trust__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  justify-content: center;
}

/* ---------- 平板 ≥768px ---------- */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding-top: 64px;
    padding-bottom: 88px;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .cert-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .team-layout {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .page-about .team-layout__media {
    grid-column: 1;
    grid-row: 1 / 3;
  }

  .page-about .team-layout__radar {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .team-layout__list {
    grid-column: 2;
    grid-row: 2;
  }

  .page-about .eco-layout {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    align-items: center;
  }

  .page-about .about-trust__links {
    gap: 16px;
  }
}

/* ---------- 桌面 ≥1024px ---------- */
@media (min-width: 1024px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1.08fr 0.92fr;
    gap: 56px;
  }

  .page-about .about-hero__content {
    order: 1;
  }

  .page-about .about-hero__media {
    order: 2;
  }

  .page-about .timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    padding-top: 30px;
  }

  .page-about .timeline::before {
    top: 11px;
    bottom: auto;
    height: 2px;
    width: 100%;
    background: linear-gradient(to right, var(--color-orange) 0%, var(--color-green) 55%, rgba(126, 200, 227, 0.25) 100%);
  }

  .page-about .timeline__item {
    padding: 0 18px 0 0;
  }

  .page-about .timeline__dot {
    top: 1px;
    left: 0;
    width: 22px;
    height: 22px;
  }

  .page-about .timeline__card {
    min-height: 190px;
    display: flex;
    flex-direction: column;
  }

  .page-about .section-heading {
    padding-left: 24px;
    margin-bottom: 44px;
  }

  .page-about .section-heading__desc {
    font-size: 1rem;
  }

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

/* ---------- 窄屏保护 ---------- */
@media (max-width: 340px) {
  .page-about .about-hero__stats {
    grid-template-columns: 1fr;
  }

  .page-about .about-hero__stat {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
  }

  .page-about .about-hero__stat dt {
    margin-bottom: 0;
  }

  .page-about .about-hero__media::after {
    display: none;
  }
}