.page-about {
  --about-panel: rgba(18, 12, 34, 0.82);
  --about-hairline: rgba(108, 43, 217, 0.34);
  position: relative;
  overflow: clip;
}

.page-about .breadcrumbs {
  margin-block: 1.5rem 0.5rem;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(1.5rem, 4vw, 3rem) clamp(2rem, 5vw, 4rem);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: end;
}

.page-about .about-hero__lead h1 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.1rem, 7vw, 4.2rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ice);
  margin-block: 0.75rem 1rem;
}

.page-about .about-hero__lead .lede {
  color: var(--mist);
  max-width: 36rem;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-block-start: 1.5rem;
}

.page-about .about-hero__figure {
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 3%, 100% 100%, 0 97%);
  box-shadow: 0 0 0 1px var(--about-hairline), 0 24px 60px -30px rgba(0, 229, 255, 0.45);
}

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

.page-about .about-hero__figure .figure__caption {
  padding: 0.85rem 1.1rem 1rem;
  color: var(--mist);
  font-size: 0.82rem;
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }
}

/* ---------- 色带 ---------- */
.page-about .about-band {
  height: 3px;
  border-radius: var(--pill);
  opacity: 0.85;
}

/* ---------- 定位段落 ---------- */
.page-about .about-origin {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.page-about .about-origin__body h2,
.page-about .about-stages-section h2,
.page-about .about-team-section h2,
.page-about .about-source__body h2,
.page-about .about-proof__text h2,
.page-about .about-cta__text h2 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 4.2vw, 2.7rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--ice);
  margin-block: 0.6rem 1rem;
}

.page-about .about-origin__body p {
  color: var(--mist);
  max-width: 42rem;
  margin-block-end: 1rem;
}

.page-about .about-origin__facts {
  display: grid;
  gap: 1rem;
  margin-block-start: 1.75rem;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
}

.page-about .about-fact {
  border-inline-start: 2px solid var(--cyan);
  padding-inline-start: 0.9rem;
}

.page-about .about-fact__num {
  display: block;
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  color: var(--ice);
  line-height: 1.1;
}

.page-about .about-fact__label {
  display: block;
  margin-block-start: 0.3rem;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-about .about-origin__aside {
  margin-block-start: 2rem;
}

.page-about .about-origin__aside p {
  color: var(--mist);
}

.page-about .about-origin__aside-link a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
  font-size: 0.9rem;
}

.page-about .about-net-wrap {
  margin: 1.25rem 0 1rem;
  padding: 1rem;
  border-radius: var(--r-lg);
  background: var(--about-panel);
  border: 1px solid var(--about-hairline);
}

.page-about .about-net {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-net__lines path {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 1.2;
  opacity: 0.3;
  transition: opacity 0.6s ease;
}

.page-about .about-net__nodes circle {
  fill: var(--violet);
  opacity: 0.85;
  transition: opacity 0.6s ease 0.25s, fill 0.6s ease 0.25s;
}

.page-about .about-net__nodes .about-net__hub {
  fill: var(--cyan);
  opacity: 1;
}

.page-about [data-reveal]:not(.is-in) .about-net__lines path,
.page-about [data-reveal]:not(.is-in) .about-net__nodes circle {
  opacity: 0.08;
}

@media (min-width: 900px) {
  .page-about .about-origin__aside {
    margin-block-start: 0;
  }
}

/* ---------- 阶段时间轴 ---------- */
.page-about .about-stages-section {
  padding-block: clamp(2.5rem, 6vw, 5rem);
  background:
    radial-gradient(120% 90% at 12% 0%, rgba(108, 43, 217, 0.28), transparent 62%),
    radial-gradient(90% 70% at 92% 100%, rgba(0, 229, 255, 0.12), transparent 60%);
}

.page-about .about-stages__lede {
  color: var(--mist);
  margin-block-end: 2rem;
}

.page-about .about-stages {
  display: grid;
  gap: 1rem;
  position: relative;
}

.page-about .about-stage {
  border-radius: var(--r-lg);
  background: var(--about-panel);
  border: 1px solid var(--about-hairline);
  padding: 1.1rem 1.15rem 1.2rem;
  transition: border-color 0.24s ease, transform 0.24s ease, box-shadow 0.24s ease;
}

.page-about .about-stage:hover,
.page-about .about-stage:focus-within {
  border-color: rgba(0, 229, 255, 0.5);
  transform: translateY(-4px);
  box-shadow: 0 20px 44px -28px rgba(0, 229, 255, 0.6);
}

.page-about .about-stage__head {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-about .about-stage__trigger {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
  padding: 0;
  background: none;
  border: 0;
  text-align: start;
  cursor: pointer;
  color: inherit;
}

.page-about .about-stage__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--pill);
  background: var(--orange);
  color: var(--ink);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

.page-about .about-stage__name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ice);
}

.page-about .about-stage__sub {
  font-size: 0.85rem;
  color: var(--mist);
}

.page-about .about-stage__panel {
  margin-block-start: 0.9rem;
  padding-block-start: 0.9rem;
  border-block-start: 1px solid var(--about-hairline);
}

.page-about .about-stage__panel p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-stage__panel[hidden] {
  display: none;
}

@media (min-width: 900px) {
  .page-about .about-stages {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-about .about-stages::before {
    content: "";
    position: absolute;
    inset-inline: 1rem;
    inset-block-start: 1.2rem;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.6), rgba(108, 43, 217, 0.7), transparent);
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team-section {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.page-about .about-team__figure {
  margin: 0 0 2.5rem;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--about-hairline);
}

.page-about .about-team__figure .figure__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.page-about .about-team__figure .figure__caption {
  padding: 0.8rem 1.1rem 1rem;
  color: var(--mist);
  font-size: 0.82rem;
}

.page-about .about-team__lede {
  color: var(--mist);
  margin-block-end: 1.75rem;
}

.page-about .about-team {
  display: grid;
  gap: 1rem;
}

.page-about .about-team__col {
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(108, 43, 217, 0.22), rgba(18, 12, 34, 0.9) 62%);
  border: 1px solid var(--about-hairline);
  padding: 1.25rem 1.2rem 1.35rem;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.page-about .about-team__col:hover,
.page-about .about-team__col:focus-within {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 255, 0.45);
  box-shadow: 0 22px 48px -30px rgba(108, 43, 217, 0.95);
  outline: none;
}

.page-about .about-team__head {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin-block-end: 0.75rem;
}

.page-about .about-team__count {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  color: var(--cyan);
  line-height: 1;
}

.page-about .about-team__head h3 {
  margin: 0;
  font-size: 1.05rem;
  color: var(--ice);
  letter-spacing: 0.04em;
}

.page-about .about-team__col p {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-team__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  min-height: 1.6rem;
}

@media (hover: hover) and (pointer: fine) {
  .page-about .about-team__tags {
    opacity: 0;
    transform: translateY(5px);
    transition: opacity 0.22s ease, transform 0.22s ease;
  }

  .page-about .about-team__col:hover .about-team__tags,
  .page-about .about-team__col:focus-within .about-team__tags {
    opacity: 1;
    transform: none;
  }
}

@media (min-width: 860px) {
  .page-about .about-team {
    grid-template-columns: 1.25fr 1fr 0.85fr;
    align-items: stretch;
  }
}

/* ---------- 内容来源 ---------- */
.page-about .about-source {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.page-about .about-source__body p {
  color: var(--mist);
  max-width: 42rem;
  margin-block-end: 1rem;
}

.page-about .about-source__list {
  list-style: none;
  margin: 1.5rem 0 1.25rem;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-about .about-source__list li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.92rem;
  color: var(--ice);
  padding: 0.75rem 1rem;
  border-radius: var(--r-md);
  background: var(--about-panel);
  border: 1px solid var(--about-hairline);
}

.page-about .about-source__dot {
  flex: none;
  width: 0.55rem;
  height: 0.55rem;
  margin-block-start: 0.5rem;
  border-radius: var(--pill);
  background: var(--green);
  box-shadow: 0 0 12px rgba(53, 224, 161, 0.7);
}

.page-about .about-source__link a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
  font-size: 0.9rem;
}

.page-about .about-source__aside {
  margin-block-start: 2rem;
  border-inline-start: 2px solid var(--violet);
  padding-inline-start: 1rem;
}

.page-about .about-source__aside p {
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-about .about-source__aside {
    margin-block-start: 0;
  }
}

/* ---------- 校对流程 ---------- */
.page-about .about-proof {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.page-about .about-proof__panel {
  border-radius: var(--r-xl);
  padding: clamp(1.5rem, 4vw, 3rem);
  overflow: hidden;
}

.page-about .about-proof__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: start;
}

.page-about .about-proof__text .eyebrow {
  color: var(--violet-deep);
}

.page-about .about-proof__text h2 {
  color: var(--ink);
}

.page-about .about-proof__steps {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-about .about-proof__steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  padding-block-end: 1.1rem;
  border-block-end: 1px solid var(--line-paper);
}

.page-about .about-proof__steps li:last-child {
  border-block-end: 0;
  padding-block-end: 0;
}

.page-about .about-proof__step-num {
  font-size: 0.85rem;
  color: var(--violet);
  padding-block-start: 0.25rem;
}

.page-about .about-proof__steps h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  color: var(--ink);
}

.page-about .about-proof__steps p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: #4a4459;
}

.page-about .about-proof__figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: 0 18px 40px -26px rgba(7, 6, 11, 0.6);
}

.page-about .about-proof__figure .figure__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 5 / 3;
}

.page-about .about-proof__figure .figure__caption {
  padding: 0.75rem 1rem 0.9rem;
  font-size: 0.8rem;
  color: #5a5468;
  background: rgba(255, 255, 255, 0.35);
}

@media (min-width: 900px) {
  .page-about .about-proof__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding-block: clamp(2.5rem, 6vw, 5rem) clamp(3rem, 7vw, 6rem);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 1.75rem;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border-radius: var(--r-xl);
  background:
    linear-gradient(135deg, rgba(108, 43, 217, 0.4), rgba(7, 6, 11, 0.95) 58%),
    var(--ink);
  border: 1px solid var(--about-hairline);
}

.page-about .about-cta__text p {
  color: var(--mist);
  max-width: 40rem;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

@media (min-width: 900px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}