.page-about {
  --ab-card: rgba(18, 59, 49, 0.72);
  --ab-card-strong: rgba(18, 59, 49, 0.95);
  --ab-line: 1px solid var(--line);
  --ab-gap: clamp(18px, 2.6vw, 28px);
  background: var(--ink);
  color: var(--mist);
  padding-block: clamp(14px, 2.6vw, 26px) clamp(56px, 9vw, 112px);
  overflow-x: clip;
}

.page-about .container {
  width: var(--shell);
}

.page-about .breadcrumb {
  padding-block: 6px 22px;
  font-size: 0.86rem;
}

.page-about .section {
  margin-top: clamp(52px, 8vw, 104px);
}

.page-about .eyebrow {
  margin-bottom: 10px;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero-wrap {
  padding-top: 0;
}

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  border-radius: var(--radius-lg);
  border: var(--ab-line);
  overflow: hidden;
  background: var(--deep);
}

.page-about .about-hero__img {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(120% 100% at 4% 100%, rgba(7, 17, 14, 0.96) 0%, rgba(7, 17, 14, 0.6) 55%, rgba(7, 17, 14, 0.16) 100%),
    linear-gradient(180deg, rgba(7, 17, 14, 0.28) 0%, rgba(7, 17, 14, 0.9) 100%);
}

.page-about .about-hero__body {
  position: relative;
  z-index: 2;
  padding: clamp(26px, 5vw, 68px);
  display: flex;
  flex-direction: column;
  gap: clamp(14px, 2vw, 20px);
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 5vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-about .about-hero .lede {
  margin: 0;
  max-width: 58ch;
  color: rgba(234, 247, 241, 0.84);
  font-size: clamp(0.96rem, 1.3vw, 1.06rem);
  line-height: 1.78;
}

.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(6px, 1.4vw, 14px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 18px;
  border-radius: var(--pill);
  border: 1px solid rgba(53, 255, 193, 0.28);
  background: rgba(14, 42, 34, 0.72);
}

.page-about .about-hero__val {
  font-family: var(--font-mono);
  font-size: 1.16rem;
  letter-spacing: 0.06em;
  color: var(--accent);
  line-height: 1.2;
}

.page-about .about-hero__lab {
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ---------- 通用小节标题 ---------- */

.page-about .about-head {
  max-width: 64ch;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-about .about-head h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 2.9vw, 2.1rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
}

.page-about .about-head__note {
  margin: 0;
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.8;
}

/* ---------- 品牌定位 ---------- */

.page-about .about-brand__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
}

.page-about .about-brand__rail h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-about .about-brand__note {
  margin: 0;
  padding-left: 16px;
  border-left: 3px solid var(--accent);
  color: var(--accent-soft);
  font-size: 0.94rem;
  line-height: 1.8;
}

.page-about .about-brand__lead {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  font-size: 1rem;
  line-height: 1.86;
  color: rgba(234, 247, 241, 0.88);
}

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

.page-about .about-scope li {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border: var(--ab-line);
  background: var(--ab-card);
  transition: background 0.25s ease, border-color 0.25s ease;
}

.page-about .about-scope li::before {
  content: "";
  grid-row: 1 / span 2;
  width: 8px;
  height: 8px;
  margin-top: 0.55em;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(53, 255, 193, 0.14);
  justify-self: center;
}

.page-about .about-scope strong {
  display: block;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--mist);
  letter-spacing: 0.01em;
}

.page-about .about-scope span {
  display: block;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .about-scope li:hover {
  background: var(--ab-card-strong);
  border-color: rgba(53, 255, 193, 0.34);
}

.page-about .about-brand__tail {
  margin: clamp(16px, 2.2vw, 22px) 0 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-brand__tail a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 255, 193, 0.45);
  padding-bottom: 1px;
}

.page-about .about-brand__tail a:hover {
  color: var(--accent-soft);
}

/* ---------- 赛季阶段带 ---------- */

.page-about .stages {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
}

.page-about .stage {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 20px 22px;
  border-radius: var(--radius-md);
  border: var(--ab-line);
  background: linear-gradient(158deg, rgba(18, 59, 49, 0.92) 0%, rgba(14, 42, 34, 0.78) 100%);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.page-about .stage::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  width: 36px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--accent);
}

.page-about .stage--amber::before {
  background: var(--amber);
}

.page-about .stage:hover {
  transform: translateY(-3px);
  border-color: rgba(53, 255, 193, 0.4);
}

.page-about .stage__no {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.page-about .stage--amber .stage__no {
  color: var(--amber);
}

.page-about .stage__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.04rem;
  font-weight: 700;
  line-height: 1.34;
  letter-spacing: 0.01em;
}

.page-about .stage__body {
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.76;
  color: var(--muted);
}

/* ---------- 团队 ---------- */

.page-about .about-team__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 44px);
}

.page-about .about-team__aside h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 2.9vw, 2rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
}

.page-about .about-team__note {
  margin: 0 0 20px;
  font-size: 0.95rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-about .about-team__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
}

.page-about .team-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px;
  border-radius: var(--radius-md);
  border: var(--ab-line);
  background: var(--ab-card);
  transition: background 0.25s ease, border-color 0.25s ease;
}

.page-about .team-card:hover {
  background: var(--ab-card-strong);
  border-color: rgba(53, 255, 193, 0.36);
}

.page-about .team-card__idx {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.page-about .team-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-about .team-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: rgba(234, 247, 241, 0.82);
}

.page-about .team-card__meta {
  margin-top: 4px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 内容流程 ---------- */

.page-about .flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 44px);
}

.page-about .flow__step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  border: var(--ab-line);
  background: var(--ab-card);
}

.page-about .flow__step + .flow__step {
  margin-top: 12px;
}

.page-about .flow__no {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(53, 255, 193, 0.42);
  background: rgba(53, 255, 193, 0.1);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}

.page-about .flow__step--amber .flow__no {
  border-color: rgba(242, 184, 75, 0.5);
  background: rgba(242, 184, 75, 0.12);
  color: var(--amber);
}

.page-about .flow__step h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-about .flow__step p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.76;
  color: var(--muted);
}

.page-about .about-flow__media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ---------- 本地协作 ---------- */

.page-about .partners {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  padding: clamp(24px, 4vw, 52px);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(53, 255, 193, 0.11) 0%, transparent 58%),
    var(--deep);
}

.page-about .partners__head {
  max-width: 62ch;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-about .partners__head h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.36rem, 2.8vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about .partners__note {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-about .partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--ab-gap);
}

.page-about .partner {
  position: relative;
  padding: 18px 0 18px 22px;
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 7px;
  transition: border-color 0.25s ease;
}

.page-about .partner__dot {
  position: absolute;
  left: -5px;
  top: 26px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--line);
  transition: background 0.25s ease, box-shadow 0.25s ease;
}

.page-about .partner:hover {
  border-color: rgba(53, 255, 193, 0.42);
}

.page-about .partner:hover .partner__dot {
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(53, 255, 193, 0.14);
}

.page-about .partner h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-about .partner p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .partners__tail {
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  padding-top: clamp(16px, 2vw, 22px);
  border-top: 1px dashed var(--line);
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .partners__tail a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 255, 193, 0.45);
  padding-bottom: 1px;
}

.page-about .partners__tail a:hover {
  color: var(--accent-soft);
}

/* ---------- 服务入口 ---------- */

.page-about .about-cta {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 36px);
  padding: clamp(24px, 4vw, 52px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(53, 255, 193, 0.3);
  background:
    radial-gradient(100% 140% at 0% 0%, rgba(53, 255, 193, 0.16) 0%, transparent 62%),
    var(--panel);
}

.page-about .about-cta__copy h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.36rem, 2.8vw, 1.9rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about .about-cta__copy > p {
  margin: 0 0 16px;
  font-size: 0.95rem;
  line-height: 1.82;
  color: rgba(234, 247, 241, 0.84);
}

.page-about .about-cta__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-about .about-cta__list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--accent-soft);
}

.page-about .about-cta__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--amber);
}

.page-about .about-cta__actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-about .stages {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .partners__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-brand__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.45fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.5fr);
    align-items: start;
  }

  .page-about .flow {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
  }

  .page-about .partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: center;
  }
}

@media (min-width: 1060px) {
  .page-about .stages {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .stage,
  .page-about .team-card,
  .page-about .about-scope li,
  .page-about .partner,
  .page-about .partner__dot {
    transition: none;
  }

  .page-about .stage:hover {
    transform: none;
  }
}