.page-about {
  --about-accent-glow: rgba(255, 107, 26, 0.55);
  --about-blue-glow: rgba(0, 229, 255, 0.35);
  --about-timeline-item-gap: clamp(2.5rem, 6vw, 5rem);
  --about-timeline-dot-size: 12px;
  --about-card-skew: -3deg;
  --about-radius: 18px;
  position: relative;
  background:
    radial-gradient(circle at 18% 8%, rgba(255, 107, 26, 0.08), transparent 26%),
    radial-gradient(circle at 85% 4%, rgba(0, 229, 255, 0.05), transparent 22%),
    #0A0E17;
  overflow: hidden;
  color: #F9FAFB;
  font-family: var(--font-body);
}

.page-about .breadcrumb {
  position: relative;
  z-index: 2;
  margin-bottom: 0;
  padding-top: 32px;
  letter-spacing: 0.04em;
  font-size: 0.9rem;
}
.page-about .breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--color-accent);
  outline: none;
}
.page-about .breadcrumb span[aria-current="page"] {
  color: var(--color-text);
  font-weight: 600;
}

/* ============ 首屏横幅 ============ */
.page-about .about-hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: end;
  padding-top: clamp(3rem, 8vw, 6rem);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.page-about .about-hero__kicker,
.page-about .about-timeline__kicker,
.page-about .about-coverage__kicker,
.page-about .about-services__kicker,
.page-about .about-team__kicker {
  margin: 0 0 0.85rem;
  color: var(--color-accent);
  font-family: var(--font-headline);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  transform: skew(-8deg);
}

.page-about .about-hero h1 {
  margin: 0 0 1.25rem;
  font-family: var(--font-headline);
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  transform: skew(-6deg);
  position: relative;
}
.page-about .about-hero h1::after {
  content: "";
  display: block;
  width: 72px;
  height: 6px;
  margin-top: 14px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-2));
  transform: skew(-20deg);
}

.page-about .about-hero__statement {
  max-width: 640px;
  margin: 0 0 1.5rem;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  line-height: 1.8;
  color: var(--color-text-muted);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin-top: 1rem;
}
.page-about .about-hero__meta span {
  padding: 0.4rem 0.9rem;
  border: 1px solid rgba(255, 107, 26, 0.4);
  border-radius: 999px;
  background: rgba(255, 107, 26, 0.08);
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.page-about .about-hero__flag {
  position: absolute;
  right: -4%;
  bottom: 6%;
  width: 220px;
  height: 220px;
  opacity: 0.5;
  pointer-events: none;
  background: radial-gradient(circle, rgba(255, 107, 26, 0.35) 0%, transparent 62%);
  filter: blur(2px);
}
.page-about .about-hero__flag-line {
  position: absolute;
  inset: 22%;
  border: 1px solid rgba(0, 229, 255, 0.35);
  border-radius: 50%;
  transform: rotate(28deg) scaleY(1.4);
}
.page-about .about-hero__flag-orb {
  position: absolute;
  inset: 38%;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(255, 107, 26, 0.9), rgba(0, 229, 255, 0.3));
  box-shadow: 0 0 40px var(--about-accent-glow);
}

/* ============ 品牌使命 ============ */
.page-about .about-mission {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-top: 2rem;
  padding-bottom: clamp(3.5rem, 8vw, 6rem);
  border-bottom: var(--hairline);
}
.page-about .about-mission__index {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-headline);
  font-weight: 900;
  letter-spacing: 0.14em;
  font-size: 0.82rem;
  color: var(--color-accent-2);
  transform: skew(-8deg);
}
.page-about .about-mission__index span:last-child {
  color: var(--color-text-muted);
}
.page-about .about-mission__body {
  max-width: 920px;
}
.page-about .about-mission__body h2,
.page-about .about-timeline h2,
.page-about .about-coverage h2,
.page-about .about-services h2,
.page-about .about-team h2 {
  margin: 0 0 1.25rem;
  font-family: var(--font-headline);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
  transform: skew(-6deg);
}
.page-about .about-mission__body p {
  margin: 0 0 1.1rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text-muted);
}
.page-about .about-mission__body p:last-child {
  margin-bottom: 0;
}

/* ============ 发展时间线 ============ */
.page-about .about-timeline {
  position: relative;
  padding-top: clamp(3.5rem, 8vw, 6rem);
  padding-bottom: clamp(3.5rem, 8vw, 6rem);
  border-bottom: var(--hairline);
}

.page-about .about-timeline__heading {
  max-width: 640px;
  margin-bottom: var(--about-timeline-item-gap);
}
.page-about .about-timeline__heading > p:last-child {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.75;
}

.page-about .about-timeline__track {
  position: relative;
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
}
.page-about .about-timeline__line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 16px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent), transparent 20%, var(--color-accent-2) 50%, var(--color-accent) 80%, transparent);
  opacity: 0.5;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 1rem;
  align-items: start;
}
.page-about .about-timeline__item--left .about-timeline__card,
.page-about .about-timeline__item--right .about-timeline__card {
  transform: skewX(calc(-1 * var(--about-card-skew)));
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.page-about .about-timeline__badge {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #0A0E17;
  font-family: var(--font-headline);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  transform: skew(-6deg);
  box-shadow: 0 0 0 4px rgba(255, 107, 26, 0.15);
}
.page-about .about-timeline__item--left .about-timeline__badge {
  background: var(--color-accent-2);
}

.page-about .about-timeline__card {
  background: #111827;
  border: 1px solid transparent;
  border-radius: var(--about-radius);
  padding: 1.25rem 1.4rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
}
.page-about .about-timeline__card:hover,
.page-about .about-timeline__card:focus-within {
  border-color: rgba(0, 229, 255, 0.5);
  box-shadow: 0 0 36px rgba(0, 229, 255, 0.12);
}
.page-about .about-timeline__card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-headline);
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  transform: skew(3deg);
}
.page-about .about-timeline__card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.94rem;
  line-height: 1.7;
  transform: skew(3deg);
}

/* ============ 数据覆盖 ============ */
.page-about .about-coverage {
  position: relative;
  overflow: hidden;
  padding-top: clamp(3.5rem, 8vw, 6rem);
  padding-bottom: clamp(3.5rem, 8vw, 6rem);
  border-bottom: var(--hairline);
}
.page-about .about-coverage__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
  pointer-events: none;
  filter: saturate(1.2) contrast(1.1);
}

.page-about .about-coverage__header {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}
.page-about .about-coverage__header > p:last-child {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.page-about .about-coverage__stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.page-about .about-coverage__stat {
  background: rgba(17, 24, 39, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--about-radius);
  padding: 1.8rem 1.6rem;
  backdrop-filter: blur(6px);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.page-about .about-coverage__stat:hover,
.page-about .about-coverage__stat:focus-within {
  border-color: rgba(0, 229, 255, 0.5);
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.1);
}
.page-about .about-coverage__num {
  display: block;
  font-family: var(--font-headline);
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transform: skew(-6deg);
}
.page-about .about-coverage__unit {
  display: block;
  margin: 0.55rem 0;
  font-family: var(--font-headline);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  transform: skew(-4deg);
}
.page-about .about-coverage__stat p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.page-about .about-coverage__note {
  position: relative;
  z-index: 1;
  margin: 0;
  padding-left: 1rem;
  border-left: 3px solid var(--color-accent);
  color: var(--color-text-muted);
  font-size: 0.88rem;
  letter-spacing: 0.02em;
}

/* ============ 内容与服务 ============ */
.page-about .about-services {
  padding-top: clamp(3.5rem, 8vw, 6rem);
  padding-bottom: clamp(3.5rem, 8vw, 6rem);
  border-bottom: var(--hairline);
}
.page-about .about-services__heading {
  max-width: 600px;
  margin-bottom: clamp(2rem, 5vw, 3rem);
}
.page-about .about-services__heading > p:last-child {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.page-about .about-services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.page-about .about-services__card {
  position: relative;
  background: #111827;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--about-radius);
  padding: 2rem 1.5rem;
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.page-about .about-services__card:nth-child(even) {
  transform: skewY(var(--about-card-skew));
}
.page-about .about-services__card:nth-child(even)::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 96px;
  height: 96px;
  background: radial-gradient(circle at 100% 0%, rgba(0, 229, 255, 0.12), transparent 68%);
  pointer-events: none;
}
.page-about .about-services__card:hover,
.page-about .about-services__card:focus-within {
  border-color: rgba(0, 229, 255, 0.45);
  box-shadow: 0 0 36px rgba(0, 229, 255, 0.1);
  transform: translateY(-3px);
}
.page-about .about-services__card:nth-child(even):hover {
  transform: skewY(var(--about-card-skew)) translateY(-3px);
}

.page-about .about-services__card-num {
  display: block;
  margin-bottom: 1rem;
  font-family: var(--font-headline);
  font-size: 0.84rem;
  font-weight: 900;
  color: var(--color-accent-2);
  letter-spacing: 0.16em;
  transform: skew(-8deg);
}
.page-about .about-services__card h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-headline);
  font-size: 1.35rem;
  font-weight: 900;
  transform: skew(-4deg);
}
.page-about .about-services__card > p {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
  font-size: 0.94rem;
  line-height: 1.7;
}
.page-about .about-services__card ul {
  margin: 0 0 1.4rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
}
.page-about .about-services__card li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--color-text);
  font-size: 0.9rem;
  line-height: 1.55;
}
.page-about .about-services__card li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.page-about .about-services__card .btn {
  display: inline-block;
}

/* ============ 团队形态 ============ */
.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
  padding-top: clamp(3.5rem, 8vw, 6rem);
  padding-bottom: clamp(3.5rem, 8vw, 6rem);
  border-bottom: var(--hairline);
}
.page-about .about-team__copy p {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.8;
}
.page-about .about-team__copy p:first-of-type {
  color: var(--color-text);
  font-size: 1.15rem;
  font-weight: 500;
}
.page-about .about-team__note {
  padding-left: 1rem;
  border-left: 3px solid var(--color-accent-2);
  font-size: 0.9rem !important;
  letter-spacing: 0.02em;
}

.page-about .about-team__media {
  position: relative;
  overflow: hidden;
  border-radius: var(--about-radius);
  max-height: 520px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}
.page-about .about-team__media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 107, 26, 0.22), transparent 45%);
  pointer-events: none;
  z-index: 1;
}
.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
}

/* ============ 底部氛围 ============ */
.page-about .about-atmosphere {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
  text-align: center;
}
.page-about .about-atmosphere img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.65;
}
.page-about .about-atmosphere__overlay {
  position: relative;
  z-index: 1;
  padding: 3rem 1.5rem;
  background: radial-gradient(circle at 50% 50%, rgba(10, 14, 23, 0.72) 0%, rgba(10, 14, 23, 0.25) 60%, transparent 100%);
}
.page-about .about-atmosphere__overlay p {
  margin: 0 0 0.5rem;
  font-family: var(--font-headline);
  font-size: clamp(1.1rem, 2.4vw, 1.7rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  transform: skew(-4deg);
  color: #F9FAFB;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.6);
}
.page-about .about-atmosphere__overlay p + p {
  margin-bottom: 1.5rem;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
}
.page-about .about-atmosphere__overlay .btn {
  display: inline-block;
}

/* ============ 通用按钮微调（页面专属作用域） ============ */
.page-about .btn {
  font-family: var(--font-headline);
  font-weight: 800;
  letter-spacing: 0.04em;
  border-radius: 999px;
  padding: 0.6rem 1.3rem;
  font-size: 0.88rem;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.page-about .btn:hover,
.page-about .btn:focus-visible {
  transform: translateY(-2px);
  outline: none;
}
.page-about .btn--primary {
  background: var(--color-accent);
  color: #0A0E17;
  border: 1px solid var(--color-accent);
}
.page-about .btn--primary:hover,
.page-about .btn--primary:focus-visible {
  background: #ff8238;
  border-color: #ff8238;
  box-shadow: 0 6px 28px rgba(255, 107, 26, 0.35);
}
.page-about .btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.16);
}
.page-about .btn--ghost:hover,
.page-about .btn--ghost:focus-visible {
  border-color: var(--color-accent-2);
  color: var(--color-accent-2);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.14);
}

/* ============ 桌面端增强 ============ */
@media (min-width: 720px) {
  .page-about .about-mission {
    grid-template-columns: 200px 1fr;
  }

  .page-about .about-timeline__line {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .about-timeline__item {
    grid-template-columns: 1fr 48px 1fr;
    gap: 0 1.25rem;
    align-items: center;
  }
  .page-about .about-timeline__item--left {
    grid-template-columns: 1fr 48px 1fr;
  }
  .page-about .about-timeline__item--right {
    grid-template-columns: 1fr 48px 1fr;
  }

  .page-about .about-timeline__item--left .about-timeline__badge {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
  }
  .page-about .about-timeline__item--left .about-timeline__card {
    grid-column: 1;
    grid-row: 1;
    text-align: right;
    transform: skewX(calc(-1 * var(--about-card-skew)));
  }
  .page-about .about-timeline__item--left .about-timeline__card h3,
  .page-about .about-timeline__item--left .about-timeline__card p {
    transform: skewX(calc(1 * var(--about-card-skew)));
  }

  .page-about .about-timeline__item--right .about-timeline__badge {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
  }
  .page-about .about-timeline__item--right .about-timeline__card {
    grid-column: 3;
    grid-row: 1;
    align-self: center;
    transform: skewX(calc(1 * var(--about-card-skew)));
  }
  .page-about .about-timeline__item--right .about-timeline__card h3,
  .page-about .about-timeline__item--right .about-timeline__card p {
    transform: skewX(calc(-1 * var(--about-card-skew)));
  }

  .page-about .about-timeline__item--left .about-timeline__badge {
    background: var(--color-accent-2);
  }

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

  .page-about .about-services__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.6rem;
  }
  .page-about .about-services__card:nth-child(2) {
    transform: skewY(calc(-1 * var(--about-card-skew)));
  }
  .page-about .about-services__card:nth-child(2):hover {
    transform: skewY(calc(-1 * var(--about-card-skew))) translateY(-3px);
  }
  .page-about .about-services__card:nth-child(3) {
    transform: skewY(var(--about-card-skew));
  }
  .page-about .about-services__card:nth-child(3):hover {
    transform: skewY(var(--about-card-skew)) translateY(-3px);
  }
  .page-about .about-services__card:nth-child(even) {
    transform: skewY(calc(-1 * var(--about-card-skew)));
  }
  .page-about .about-services__card:nth-child(even):hover {
    transform: skewY(calc(-1 * var(--about-card-skew))) translateY(-3px);
  }

  .page-about .about-team {
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
  }
  .page-about .about-team__media {
    order: 2;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero {
    min-height: 62vh;
    align-content: center;
  }
}