.page-about {
  background: var(--ink-deep);
  color: var(--slate);
  overflow-x: hidden;
}

/* ---------------- 首屏 ---------------- */

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 7vw, 76px) 0 clamp(52px, 8vw, 104px);
  background:
    radial-gradient(120% 92% at 84% -12%, rgba(67, 40, 110, 0.92) 0%, transparent 58%),
    radial-gradient(96% 82% at 2% 98%, rgba(122, 31, 61, 0.5) 0%, transparent 62%),
    var(--ink-deep);
}

.page-about .about-hero__blocks {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(136deg, transparent 0 44%, rgba(159, 199, 232, 0.08) 44% 44.4%, transparent 44.4%),
    linear-gradient(136deg, transparent 0 68%, rgba(47, 214, 138, 0.14) 68% 68.4%, transparent 68.4%),
    linear-gradient(136deg, transparent 0 88%, rgba(255, 138, 61, 0.16) 88% 88.3%, transparent 88.3%);
}

.page-about .about-hero__stage {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  align-items: center;
}

.page-about .about-hero .breadcrumb {
  font-size: 13px;
  color: var(--slate);
}

.page-about .about-hero .breadcrumb a {
  color: var(--slate);
  text-decoration: none;
}

.page-about .about-hero .breadcrumb a:hover,
.page-about .about-hero .breadcrumb a:focus-visible {
  color: var(--breath);
}

.page-about .about-hero .crumb-sep {
  margin: 0 8px;
  color: var(--line-strong);
}

.page-about .about-kicker {
  margin: clamp(18px, 3vw, 26px) 0 12px;
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--breath);
}

.page-about h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(33px, 7.4vw, 80px);
  line-height: 1.04;
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-about .about-hero__lede {
  margin: clamp(18px, 3vw, 28px) 0 0;
  max-width: 62ch;
  font-size: clamp(15.5px, 1.5vw, 18px);
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-facts {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
}

.page-about .about-facts li {
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--glass-fill);
  backdrop-filter: blur(8px);
}

.page-about .about-facts__num {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(19px, 2.6vw, 26px);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.1;
  color: var(--pulse);
}

.page-about .about-facts__label {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--slate);
}

.page-about .about-hero__figure {
  margin: 0;
  aspect-ratio: 1 / 1;
  max-height: 460px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lift);
}

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

/* ---------------- 时间线 ---------------- */

.page-about .about-journey {
  position: relative;
  padding: clamp(44px, 7vw, 92px) 0 clamp(56px, 9vw, 120px);
  background:
    radial-gradient(90% 60% at 96% 4%, rgba(67, 40, 110, 0.42) 0%, transparent 60%),
    linear-gradient(180deg, var(--ink-deep) 0%, var(--ink-mid) 10%, var(--ink-mid) 90%, var(--ink-deep) 100%);
}

.page-about .journey-index {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 0 0 clamp(40px, 7vw, 78px);
}

.page-about .journey-index__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--slate);
  text-decoration: none;
  background: rgba(19, 28, 63, 0.5);
  transition: color 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

.page-about .journey-index__item::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--breath);
  box-shadow: 0 0 10px rgba(47, 214, 138, 0.85);
}

.page-about .journey-index__item:hover,
.page-about .journey-index__item:focus-visible {
  color: var(--white);
  border-color: var(--breath);
  background: rgba(47, 214, 138, 0.14);
}

.page-about .journey-item {
  position: relative;
  padding-left: 34px;
  padding-bottom: clamp(60px, 11vw, 148px);
  scroll-margin-top: 96px;
}

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

.page-about .journey-item::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(47, 214, 138, 0.55), rgba(47, 214, 138, 0.07));
}

.page-about .journey-item:last-child::before {
  background: linear-gradient(180deg, rgba(47, 214, 138, 0.55), rgba(47, 214, 138, 0));
}

.page-about .journey-item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--breath);
  box-shadow: 0 0 0 5px rgba(47, 214, 138, 0.14), 0 0 22px rgba(47, 214, 138, 0.75);
}

.page-about .journey-item__side {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin-bottom: 12px;
}

.page-about .journey-mark {
  font-family: var(--font-data);
  font-size: clamp(26px, 5.4vw, 40px);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  color: var(--white);
  text-shadow: 0 0 26px rgba(47, 214, 138, 0.35);
}

.page-about .journey-item__side .tag {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--breath);
}

.page-about .journey-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4.4vw, 44px);
  line-height: 1.16;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .journey-body > p {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.82;
  color: var(--slate);
}

.page-about .journey-body > p:last-child {
  margin-bottom: 0;
}

/* 图片 */

.page-about .journey-media {
  margin: clamp(24px, 4vw, 36px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(10, 23, 51, 0.7);
  box-shadow: var(--shadow-card);
}

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

.page-about .journey-media figcaption {
  padding: 12px 16px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--slate);
  border-top: 1px solid var(--line);
}

/* 星图 */

.page-about .starmap {
  position: relative;
  margin: clamp(24px, 4vw, 34px) 0 0;
  padding: 20px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 100% at 18% 0%, rgba(67, 40, 110, 0.55) 0%, transparent 62%),
    rgba(10, 23, 51, 0.72);
}

.page-about .starmap__lines {
  display: none;
}

.page-about .starmap__nodes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .starmap__node {
  --nx: 50%;
  --ny: 50%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(19, 28, 63, 0.75);
}

.page-about .starmap__tag {
  display: block;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--breath);
}

.page-about .starmap__node h3 {
  margin: 7px 0 6px;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .starmap__node p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* 团队 */

.page-about .crew-grid {
  list-style: none;
  margin: clamp(24px, 4vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .crew-card {
  position: relative;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, rgba(67, 40, 110, 0.5), rgba(10, 23, 51, 0.72));
}

.page-about .crew-card--pulse {
  background: linear-gradient(158deg, rgba(122, 31, 61, 0.55), rgba(10, 23, 51, 0.72));
}

.page-about .crew-card--nebula {
  background: linear-gradient(158deg, rgba(67, 40, 110, 0.72), rgba(19, 28, 63, 0.8));
}

.page-about .crew-card__index {
  display: block;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--pulse);
}

.page-about .crew-card h3 {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .crew-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

/* 合作方标签墙 */

.page-about .partner-wall {
  display: grid;
  gap: 16px;
  margin: clamp(24px, 4vw, 34px) 0 0;
}

.page-about .partner-group {
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-top-width: 2px;
  border-radius: var(--radius-lg);
  background: var(--glass-fill);
  backdrop-filter: blur(10px);
}

.page-about .partner-group--media {
  border-top-color: var(--breath);
}

.page-about .partner-group--data {
  border-top-color: var(--pulse);
}

.page-about .partner-group--circle {
  border-top-color: var(--glass);
}

.page-about .partner-group__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-about .partner-group__note {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

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

.page-about .partner-list li {
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--slate);
  background: rgba(10, 23, 51, 0.6);
}

/* 下一步 */

.page-about .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3.6vw, 32px);
}

/* ---------------- 响应式 ---------------- */

@media (min-width: 620px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .crew-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .partner-wall {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__stage {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: clamp(40px, 6vw, 88px);
  }

  .page-about .about-hero__figure {
    transform: translateY(-16px);
  }

  .page-about .journey-item {
    display: grid;
    grid-template-columns: 168px minmax(0, 1fr);
    column-gap: clamp(32px, 5vw, 76px);
    padding-left: 46px;
  }

  .page-about .journey-item::before {
    left: 8px;
  }

  .page-about .journey-item::after {
    left: 3px;
    top: 8px;
  }

  .page-about .journey-item__side {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 0;
  }

  .page-about .starmap {
    height: 700px;
    padding: 0;
  }

  .page-about .starmap__lines {
    display: block;
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
  }

  .page-about .starmap__lines polyline {
    fill: none;
    stroke: rgba(47, 214, 138, 0.4);
    stroke-width: 1;
    stroke-dasharray: 5 7;
    vector-effect: non-scaling-stroke;
  }

  .page-about .starmap__nodes {
    display: block;
  }

  .page-about .starmap__node {
    position: absolute;
    left: var(--nx);
    top: var(--ny);
    width: 176px;
    transform: translate(-50%, -50%);
    transition: border-color 0.24s ease, background 0.24s ease, box-shadow 0.24s ease;
  }

  .page-about .starmap__node:hover,
  .page-about .starmap__node:focus-within {
    border-color: var(--breath);
    background: rgba(19, 28, 63, 0.96);
    box-shadow: 0 0 0 1px rgba(47, 214, 138, 0.35), var(--shadow-card);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .journey-index__item,
  .page-about .starmap__node {
    transition: none;
  }

  .page-about .about-hero__figure {
    transform: none;
  }
}