.page-about {
  --about-line: 1px solid var(--moss-2);
  background: var(--ink);
  color: var(--cream);
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .about-topbar {
  padding-top: 18px;
}

.page-about .about-h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 48px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--cream);
  margin: 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 4vw, 44px) 0 clamp(34px, 6vw, 72px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 86% 0%, rgba(198, 255, 74, 0.1), transparent 62%),
    linear-gradient(118deg, transparent 0 63%, rgba(52, 82, 71, 0.28) 63% 63.4%, transparent 63.4%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 48px);
}

.page-about .about-hero__copy h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 6.4vw, 64px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: 0.01em;
  color: var(--cream);
  margin: 12px 0 18px;
}

.page-about .about-hero__copy .w-lead {
  max-width: 44ch;
  margin: 0;
}

.page-about .about-hero__marks {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.page-about .about-hero__marks li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: var(--fs-14);
  color: var(--stone);
}

.page-about .about-hero__marks .w-mono {
  color: var(--lime);
  font-size: var(--fs-16);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-orbit {
  max-width: 340px;
  margin: 0 auto;
}

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

.page-about .about-orbit__ring {
  fill: none;
  stroke: var(--moss-2);
  stroke-width: 1;
}

.page-about .about-orbit__ring--dash {
  stroke-dasharray: 3 8;
}

.page-about .about-orbit__path {
  fill: none;
  stroke: var(--lime);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.7;
}

.page-about .about-orbit__tick {
  stroke: var(--moss-2);
  stroke-width: 1;
}

.page-about .about-orbit__dot {
  fill: var(--moss-2);
}

.page-about .about-orbit__dot--orange {
  fill: var(--orange);
}

.page-about .about-orbit__dot--lime {
  fill: var(--lime);
}

.page-about .about-orbit__cap {
  margin: 14px 0 0;
  text-align: center;
  font-size: var(--fs-14);
  color: var(--stone);
}

.page-about .about-orbit__cap .w-mono {
  color: var(--cream);
}

/* ---------- 规模数字 ---------- */
.page-about .about-stats {
  padding-bottom: clamp(30px, 5vw, 52px);
}

.page-about .about-stats__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--moss-2);
  border: var(--about-line);
}

.page-about .about-stats__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 16px;
  background: var(--ink-2);
}

.page-about .about-stats__item dt {
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--stone);
}

.page-about .about-stats__item dd {
  margin: 0;
  font-size: var(--fs-16);
  color: var(--cream);
}

.page-about .about-stats__num {
  font-size: var(--fs-32);
  color: var(--lime);
  line-height: 1;
}

/* ---------- 品牌主张 ---------- */
.page-about .about-claim {
  position: relative;
}

.page-about .about-claim__grid {
  display: grid;
  gap: 24px;
}

.page-about .about-claim__grid .about-h2::before {
  content: "";
  display: block;
  width: 48px;
  height: 2px;
  background: var(--lime);
  margin-bottom: 18px;
}

.page-about .about-claim__body p {
  margin: 0 0 16px;
  max-width: 62ch;
  color: var(--stone);
  line-height: 1.85;
}

.page-about .about-quote {
  margin: 26px 0 0;
  padding: 22px 24px;
  background: var(--moss);
  border: var(--about-line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-about .about-quote p {
  margin: 12px 0 0;
  max-width: 42ch;
  color: var(--cream);
  font-size: var(--fs-18);
  line-height: 1.7;
}

/* ---------- 发展历程 ---------- */
.page-about .about-timeline {
  background: var(--moss);
  border-top: var(--about-line);
  border-bottom: var(--about-line);
}

.page-about .about-timeline__head {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(28px, 5vw, 48px);
}

.page-about .about-timeline__intro {
  margin: 0;
  max-width: 56ch;
  color: var(--stone);
  line-height: 1.8;
}

.page-about .about-timeline__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-index__label {
  margin: 0 0 12px;
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  color: var(--stone);
}

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

.page-about .about-index a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 10px;
  font-size: var(--fs-14);
  color: var(--stone);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-index a .w-mono {
  color: var(--lime);
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  color: var(--cream);
  background: rgba(10, 22, 18, 0.45);
  border-left-color: var(--lime);
}

.page-about .about-index a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-about .about-stops {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  position: relative;
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

.page-about .about-stops::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--moss-2);
}

.page-about .about-stop {
  position: relative;
  scroll-margin-top: 120px;
}

.page-about .about-stop::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--moss);
  border: 1px solid var(--moss-2);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-stop:hover::before,
.page-about .about-stop:focus-within::before {
  background: var(--lime);
  border-color: var(--lime);
}

.page-about .about-stop--key::before {
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 139, 61, 0.16);
}

.page-about .about-stop__year {
  margin: 0 0 6px;
  font-size: var(--fs-18);
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-about .about-stop--key .about-stop__year {
  color: var(--orange);
}

.page-about .about-stop h3 {
  margin: 0 0 10px;
  font-size: var(--fs-24);
  font-weight: 700;
  line-height: 1.3;
  color: var(--cream);
}

.page-about .about-stop > p:not(.about-stop__year) {
  margin: 0 0 12px;
  max-width: 60ch;
  color: var(--stone);
  line-height: 1.8;
}

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

.page-about .about-stop__keys li {
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--stone);
  border: 1px solid var(--moss-2);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-stop:hover .about-stop__keys li {
  color: var(--lime);
  border-color: var(--moss);
}

.page-about .about-night {
  margin: clamp(32px, 6vw, 56px) 0 0;
}

.page-about .about-night img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
  border: var(--about-line);
}

.page-about .about-night figcaption {
  margin-top: 10px;
  font-size: var(--fs-14);
  color: var(--stone);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: var(--about-line);
}

.page-about .about-team__intro {
  margin: 16px 0 0;
  max-width: 56ch;
  color: var(--stone);
  line-height: 1.85;
}

.page-about .about-roles {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-role {
  padding: 18px 20px;
  background: var(--moss);
  border: 1px solid var(--moss-2);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-role:hover {
  transform: translateY(-3px);
  background: #1f3a30;
}

.page-about .about-role__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 10px;
}

.page-about .about-role__num {
  font-size: var(--fs-32);
  line-height: 1;
  color: var(--lime);
}

.page-about .about-role p:last-child {
  margin: 0;
  color: var(--stone);
  font-size: var(--fs-16);
  line-height: 1.75;
}

/* ---------- 内容流程 ---------- */
.page-about .about-flow__intro {
  margin: 16px 0 0;
  max-width: 58ch;
  color: var(--stone);
  line-height: 1.8;
}

.page-about .about-flow__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--moss);
}

.page-about .about-steps li:last-child {
  border-bottom: 0;
}

.page-about .about-step__no {
  grid-row: 1 / span 2;
  font-size: var(--fs-24);
  line-height: 1.2;
  color: var(--lime);
}

.page-about .about-steps h3 {
  margin: 0 0 6px;
  font-size: var(--fs-18);
  font-weight: 700;
  color: var(--cream);
}

.page-about .about-steps p {
  margin: 0;
  color: var(--stone);
  font-size: var(--fs-16);
  line-height: 1.75;
}

.page-about .about-flow__media {
  margin: 0;
}

.page-about .about-flow__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: var(--about-line);
}

.page-about .about-flow__cap {
  margin-top: 10px;
  font-size: var(--fs-14);
  color: var(--stone);
}

.page-about .about-flow__note {
  margin: 26px 0 0;
  padding: 14px 18px;
  border-left: 2px solid var(--orange);
  background: rgba(27, 51, 42, 0.55);
  color: var(--stone);
  font-size: var(--fs-14);
  line-height: 1.8;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners__head {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(24px, 4vw, 36px);
}

.page-about .about-partners__head p {
  margin: 0;
  max-width: 58ch;
  color: var(--stone);
  line-height: 1.8;
}

.page-about .about-partners__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-source {
  padding: 22px;
  background: var(--ink-2);
  border: 1px solid var(--moss-2);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-source:hover {
  transform: translateY(-3px);
  border-color: var(--lime);
}

.page-about .about-source h3 {
  margin: 14px 0 8px;
  font-size: var(--fs-18);
  font-weight: 700;
  color: var(--cream);
}

.page-about .about-source p {
  margin: 0;
  color: var(--stone);
  font-size: var(--fs-16);
  line-height: 1.75;
}

.page-about .about-partners__note {
  margin: 20px 0 0;
  font-size: var(--fs-14);
  color: var(--stone);
  line-height: 1.8;
}

.page-about .about-partners__note a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 荣誉 ---------- */
.page-about .about-honor__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-honor__year {
  border-left: 3px solid var(--orange);
  padding-left: 18px;
}

.page-about .about-honor__year .w-mono {
  display: block;
  font-size: clamp(48px, 10vw, 96px);
  line-height: 0.9;
  color: var(--orange);
}

.page-about .about-honor__year p {
  margin: 12px 0 0;
  max-width: 18ch;
  color: var(--cream);
  font-size: var(--fs-16);
  line-height: 1.6;
}

.page-about .about-honor__body p {
  margin: 16px 0 18px;
  max-width: 60ch;
  color: var(--stone);
  line-height: 1.85;
}

.page-about .about-honor__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-honor__list li {
  position: relative;
  padding-left: 20px;
  color: var(--stone);
  line-height: 1.75;
}

.page-about .about-honor__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 8px;
  height: 1px;
  background: var(--lime);
}

/* ---------- 联络 ---------- */
.page-about .about-contact__panel {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  padding: clamp(24px, 4vw, 40px);
  background: var(--moss);
  border: 1px solid var(--moss-2);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-about .about-contact__copy p {
  margin: 14px 0 0;
  max-width: 46ch;
  color: var(--stone);
  line-height: 1.85;
}

.page-about .about-contact__ways {
  display: grid;
  gap: 12px;
}

.page-about .about-way {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 12px;
  padding: 12px 14px;
  background: var(--ink-2);
  border: 1px solid var(--moss-2);
}

.page-about .about-way__k {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--stone);
}

.page-about .about-way__v {
  font-size: clamp(14px, 2.4vw, 16px);
  color: var(--cream);
  word-break: break-word;
}

.page-about .about-way .copy-btn {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
}

.page-about .about-way__addr {
  margin: 2px 0 6px;
  font-size: var(--fs-14);
  color: var(--stone);
  line-height: 1.7;
}

.page-about .about-contact__ways .w-btn {
  justify-self: start;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-about .about-stats__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stats__item {
    padding: 22px 20px;
  }

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

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

  .page-about .about-claim__grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: clamp(32px, 6vw, 80px);
    align-items: start;
  }

  .page-about .about-timeline__grid {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-index {
    align-self: start;
    position: sticky;
    top: 96px;
  }

  .page-about .about-index ol {
    flex-direction: column;
    gap: 2px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-about .about-team__media {
    position: sticky;
    top: 100px;
  }

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

  .page-about .about-honor__grid {
    grid-template-columns: 260px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-contact__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role:hover,
  .page-about .about-source:hover {
    transform: none;
  }

  .page-about .about-role,
  .page-about .about-source,
  .page-about .about-stop::before,
  .page-about .about-index a {
    transition: none;
  }
}