.page-about {
  --about-line: rgba(62, 74, 79, 0.16);
  --about-soft: rgba(62, 74, 79, 0.08);
  --about-gap: 1.5rem;
  background: var(--c-paper);
  color: var(--c-brick-deep);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0;
  line-height: 1.18;
  letter-spacing: -0.01em;
}

.page-about p {
  margin: 0;
}

.page-about .about-title {
  font-size: clamp(1.5rem, 4.6vw, 2.35rem);
  font-weight: 800;
  max-width: 20em;
}

.page-about .about-lead {
  margin-top: 0.9rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-brick);
}

.page-about .about-body {
  margin-top: 0.85rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--c-brick);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: 1.25rem 0 2.5rem;
  background: var(--c-night);
  color: var(--c-paper);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: auto -18% -38% -18%;
  height: 72%;
  background: linear-gradient(102deg, var(--c-brick) 0%, var(--c-brick-deep) 78%);
  transform: rotate(-5deg);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: -30%;
  right: -7rem;
  width: 13rem;
  height: 175%;
  background: linear-gradient(200deg, rgba(228, 87, 46, 0.6), rgba(228, 87, 46, 0) 72%);
  transform: skewX(-12deg);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
}

.page-about .about-crumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--c-mute);
}

.page-about .about-crumb li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--c-mute);
}

.page-about .about-crumb a {
  color: var(--c-wall);
  text-decoration: none;
}

.page-about .about-crumb a:hover {
  color: var(--c-flame-hi);
}

.page-about .about-crumb [aria-current="page"] {
  color: var(--c-paper);
}

.page-about .about-hero__eyebrow {
  margin-top: 1.6rem;
  color: var(--c-flame-hi);
}

.page-about .about-hero__title {
  margin-top: 0.7rem;
  font-size: clamp(2rem, 8.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.page-about .about-hero__lead {
  margin-top: 1.1rem;
  max-width: 34rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-wall);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 0.9rem;
  margin: 1.9rem 0 0;
}

.page-about .about-hero__stats > div {
  border-left: 2px solid var(--c-flame);
  padding-left: 0.7rem;
}

.page-about .about-hero__stats dt {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--c-mute);
}

.page-about .about-hero__stats dd {
  margin: 0.2rem 0 0;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--c-paper);
}

/* ---------- 通用分区 ---------- */
.page-about .about-section {
  padding: 3rem 0;
}

.page-about .about-start {
  background: var(--c-paper);
}

.page-about .about-start__grid {
  display: grid;
  gap: 2rem;
}

.page-about .about-start__kits {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 图片 ---------- */
.page-about .about-shot {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(150deg, var(--c-brick) 0%, var(--c-night) 100%);
  box-shadow: 0 20px 44px -28px rgba(16, 28, 44, 0.75);
}

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

.page-about .about-shot__cap {
  padding: 0.75rem 1rem 0.9rem;
  background: var(--c-brick-deep);
  color: var(--c-wall);
  font-size: 0.78rem;
  line-height: 1.6;
}

/* ---------- 发展历程 ---------- */
.page-about .about-era {
  background: var(--c-wall);
}

.page-about .about-era__grid {
  display: grid;
  gap: 1.75rem;
}

.page-about .about-era__years {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.8rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-era__years a {
  display: block;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--about-line);
  border-radius: 999px;
  background: var(--c-paper);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-brick);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-era__years a:hover,
.page-about .about-era__years a:focus-visible {
  border-color: var(--c-flame);
  color: var(--c-flame);
}

.page-about .about-era__num {
  font-weight: 700;
}

.page-about .about-era__label {
  margin-left: 0.35rem;
  color: var(--c-mute);
}

.page-about .about-era__list {
  display: grid;
  gap: 1rem;
  margin: 1.8rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-era__item {
  display: grid;
  gap: 0.4rem;
  padding: 1.15rem 1.2rem;
  background: var(--c-paper);
  border-left: 3px solid var(--c-flame);
  border-radius: var(--radius-lg);
  scroll-margin-top: 5rem;
}

.page-about .about-era__year {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-flame);
}

.page-about .about-era__txt h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-brick-deep);
}

.page-about .about-era__txt p {
  margin-top: 0.5rem;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--c-brick);
}

/* ---------- 团队 ---------- */
.page-about .about-crew {
  background: var(--c-brick-deep);
  color: var(--c-paper);
}

.page-about .about-crew .about-title {
  color: var(--c-paper);
}

.page-about .about-crew .about-lead {
  color: var(--c-wall);
}

.page-about .about-crew .gw-eyebrow {
  color: var(--c-flame-hi);
}

.page-about .about-crew__head {
  display: grid;
  gap: 1.6rem;
}

.page-about .about-crew__list {
  display: grid;
  gap: 1.1rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-crew__item {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1.1rem 1.15rem;
  background: rgba(246, 243, 236, 0.06);
  border: 1px solid rgba(216, 210, 196, 0.16);
  border-radius: var(--radius-lg);
}

.page-about .about-crew__idx {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-flame-hi);
  line-height: 1.4;
}

.page-about .about-crew__txt h3 {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--c-paper);
}

.page-about .about-crew__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-flame-hi);
}

.page-about .about-crew__txt p {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--c-wall);
}

.page-about .about-crew__bar {
  margin-top: 0.85rem;
  height: 4px;
  border-radius: 999px;
  background: rgba(216, 210, 196, 0.18);
  overflow: hidden;
}

.page-about .about-crew__bar .gw-bar__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--c-flame), var(--c-flame-hi));
}

/* ---------- 覆盖与合作 ---------- */
.page-about .about-eco {
  background: var(--c-paper);
}

.page-about .about-eco__grid {
  display: grid;
  gap: 2rem;
}

.page-about .about-eco__rows {
  display: grid;
  gap: 1.2rem;
  margin: 1.8rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-eco__row {
  padding: 0.9rem 0 0.2rem;
  border-top: 1px solid var(--about-line);
}

.page-about .about-eco__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.page-about .about-eco__name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-brick-deep);
}

.page-about .about-eco__val {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--c-flame);
}

.page-about .about-eco__bar {
  margin-top: 0.55rem;
  height: 6px;
  border-radius: 999px;
  background: var(--about-soft);
  overflow: hidden;
}

.page-about .about-eco__bar .gw-bar__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--c-brick), var(--c-pitch));
  transition: filter var(--dur) var(--ease);
}

.page-about .about-eco__tip {
  margin-top: 0.45rem;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--c-mute);
}

.page-about .about-shot--eco {
  border: 1px solid var(--about-line);
  box-shadow: none;
}

/* ---------- 口碑与更新 ---------- */
.page-about .about-honor {
  background: var(--c-wall);
}

.page-about .about-honor__grid {
  display: grid;
  gap: 1.6rem;
}

.page-about .about-honor__facts {
  display: grid;
  gap: 0.7rem;
}

.page-about .about-honor__fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  background: var(--c-paper);
  border-left: 3px solid var(--c-wine);
  border-radius: var(--radius-sm);
}

.page-about .about-honor__k {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--c-brick);
}

.page-about .about-honor__v {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-brick-deep);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  background: var(--c-paper);
  padding-bottom: 3.5rem;
}

.page-about .about-next__links {
  display: grid;
  gap: 0.8rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-next__links li {
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-lg);
  background: var(--c-wall);
}

.page-about .about-next__links .gw-btn {
  justify-self: start;
}

.page-about .about-next__links span {
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--c-brick);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero {
    padding: 1.75rem 0 3.25rem;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.2rem;
  }

  .page-about .about-section {
    padding: 4rem 0;
  }

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

  .page-about .about-eco__rows {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.4rem;
  }

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

  .page-about .about-honor__fact {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

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

/* ---------- 桌面：战术板分栏 ---------- */
@media (min-width: 980px) {
  .page-about .about-hero__title {
    font-size: clamp(2.6rem, 4.6vw, 3.8rem);
  }

  .page-about .about-start__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: center;
    gap: 3.25rem;
  }

  .page-about .about-shot--tilt {
    transform: rotate(-1.5deg);
  }

  .page-about .about-era__grid {
    grid-template-columns: 12rem minmax(0, 1fr);
    gap: 3.5rem;
    align-items: start;
  }

  .page-about .about-era__rail {
    position: sticky;
    top: 2.5rem;
  }

  .page-about .about-era__years {
    display: grid;
    gap: 1.1rem;
    margin-top: 1.1rem;
    padding-left: 1.15rem;
    border-left: 1px solid rgba(62, 74, 79, 0.3);
  }

  .page-about .about-era__years a {
    position: relative;
    padding: 0;
    border: 0;
    background: none;
  }

  .page-about .about-era__years a::before {
    content: "";
    position: absolute;
    left: -1.53rem;
    top: 0.35rem;
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 50%;
    background: var(--c-brick);
    box-shadow: 0 0 0 3px var(--c-wall);
    transition: background var(--dur) var(--ease);
  }

  .page-about .about-era__years a:hover::before,
  .page-about .about-era__years a:focus-visible::before {
    background: var(--c-flame);
  }

  .page-about .about-era__label {
    display: block;
    margin: 0.2rem 0 0;
  }

  .page-about .about-era__item {
    grid-template-columns: 4.5rem minmax(0, 1fr);
    gap: 1.25rem;
    padding: 1.4rem 1.5rem;
  }

  .page-about .about-crew__head {
    grid-template-columns: minmax(0, 1fr) 22rem;
    align-items: center;
    gap: 2.5rem;
  }

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

  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 3rem;
  }

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

  .page-about .about-honor__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 3rem;
  }

  .page-about .about-next__links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 悬停时展开合作类型 ---------- */
@media (hover: hover) and (min-width: 720px) {
  .page-about .about-eco__tip {
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  }

  .page-about .about-eco__row:hover .about-eco__tip,
  .page-about .about-eco__row:focus-within .about-eco__tip {
    opacity: 1;
    transform: translateY(0);
  }

  .page-about .about-eco__row:hover .about-eco__bar .gw-bar__fill,
  .page-about .about-eco__row:focus-within .about-eco__bar .gw-bar__fill {
    filter: brightness(1.15);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-shot--tilt {
    transform: none;
  }

  .page-about .about-era__years a,
  .page-about .about-eco__tip,
  .page-about .about-eco__bar .gw-bar__fill {
    transition: none;
  }
}