.page-about {
  --about-radius: var(--r-lg);
  --about-gap: 26px;
  display: block;
}

.page-about [id] {
  scroll-margin-top: calc(var(--hdr-h) + 24px);
}

.page-about :focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

.page-about__crumb {
  padding-top: 20px;
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: 10px;
  padding-bottom: 8px;
}

.page-about .about-hero__title {
  margin-top: 12px;
  max-width: 22ch;
}

.page-about .about-hero__lede {
  margin-top: 16px;
  max-width: 58ch;
  color: var(--paper);
}

.page-about .about-anchorbar {
  display: flex;
  gap: 8px;
  margin-top: 26px;
  padding-bottom: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-anchorbar::-webkit-scrollbar {
  display: none;
}

.page-about .about-anchorbar a {
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  color: var(--slate);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-decoration: none;
  transition: color var(--t) var(--ease), background var(--t) var(--ease),
    border-color var(--t) var(--ease);
}

.page-about .about-anchorbar a:hover,
.page-about .about-anchorbar a:focus-visible {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
}

.page-about .about-hero__figure {
  margin: 28px 0 0;
}

/* ---------- 图片容器 ---------- */
.page-about .about-media {
  position: relative;
  display: block;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-2);
  border-radius: var(--about-radius);
  background: var(--ink-2);
}

.page-about .about-media--wide {
  aspect-ratio: 21 / 9;
}

.page-about .about-media--square {
  aspect-ratio: 1 / 1;
}

.page-about .about-media--tall {
  aspect-ratio: 4 / 5;
}

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

/* ---------- 色带与节奏 ---------- */
.page-about .about-band {
  padding: 46px 0;
}

.page-about .about-cadence-section {
  padding-bottom: 20px;
}

/* ---------- 四类服务 ---------- */
.page-about .about-svc {
  margin-top: 30px;
  border-top: 1px solid var(--line-2);
}

.page-about .about-svc__row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-2);
  transition: background var(--t) var(--ease), padding-left var(--t) var(--ease);
}

.page-about .about-svc__row:hover {
  background: rgba(212, 175, 55, 0.05);
  padding-left: 10px;
}

.page-about .about-svc__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .about-svc__title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-about .about-svc__text {
  margin: 0;
  max-width: 58ch;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.78;
}

.page-about .about-tail {
  margin: 24px 0 0;
  max-width: 60ch;
  color: var(--slate);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 通用分栏 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: 30px;
}

.page-about .about-p {
  margin: 0 0 20px;
  max-width: 52ch;
  color: var(--paper);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-pills li {
  padding: 6px 14px;
  border: 1px solid var(--line-3);
  border-radius: var(--pill);
  background: rgba(0, 229, 255, 0.06);
  color: var(--cyan-mist);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-about .about-scenes {
  margin-top: 28px;
  border-top: 1px solid var(--line-2);
}

.page-about .about-scene {
  padding: 16px 0;
  border-bottom: 1px solid var(--line-2);
}

.page-about .about-scene h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--gold-mist);
}

.page-about .about-scene p {
  margin: 0;
  max-width: 48ch;
  color: var(--slate);
  font-size: 14px;
  line-height: 1.75;
}

.page-about .about-range__figure {
  align-self: start;
}

/* ---------- 数据流程 ---------- */
.page-about .about-flow {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow__step {
  position: relative;
  padding: 0 0 26px 32px;
}

.page-about .about-flow__step::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid var(--gold);
  background: var(--ink);
  transition: background var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-about .about-flow__step::after {
  content: "";
  position: absolute;
  left: 11px;
  top: 22px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(212, 175, 55, 0.5), rgba(0, 229, 255, 0.16));
}

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

.page-about .about-flow__step:last-child::after {
  display: none;
}

.page-about .about-flow__step--cyan::before {
  border-color: var(--cyan);
}

.page-about .about-flow__step:hover::before {
  background: var(--gold);
}

.page-about .about-flow__step--cyan:hover::before {
  background: var(--cyan);
}

.page-about .about-flow__title {
  margin: 0 0 7px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-about .about-flow__text {
  margin: 0;
  max-width: 46ch;
  color: var(--slate);
  font-size: 14px;
  line-height: 1.75;
}

.page-about .about-method__figure {
  align-self: start;
}

/* ---------- 团队分工 ---------- */
.page-about .about-crew {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 28px;
}

.page-about .about-crew__stat {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(6, 7, 10, 0.42);
  transition: border-color var(--t) var(--ease);
}

.page-about .about-crew__stat:hover {
  border-color: var(--gold);
}

.page-about .about-crew__num {
  font-family: var(--font-mono);
  font-size: 40px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .about-crew__label {
  color: var(--slate);
  font-size: 14px;
  letter-spacing: 0.06em;
}

.page-about .about-crew__note {
  margin-top: 26px;
  display: grid;
  gap: 16px;
  max-width: 62ch;
}

.page-about .about-crew__note p {
  margin: 0;
  color: var(--paper);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 服务与备案 ---------- */
.page-about .about-facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-facts__item {
  display: grid;
  gap: 7px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(212, 175, 55, 0.06), rgba(6, 7, 10, 0));
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease);
}

.page-about .about-facts__item:hover {
  border-color: var(--gold);
  background: linear-gradient(180deg, rgba(212, 175, 55, 0.12), rgba(6, 7, 10, 0));
}

.page-about .about-facts__key {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--slate);
}

.page-about .about-facts__val {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--gold-mist);
  overflow-wrap: anywhere;
}

.page-about .about-facts__val--cn {
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: 0.08em;
}

/* ---------- 版本节奏 ---------- */
.page-about .about-cadence {
  margin-top: 30px;
  border-top: 1px solid var(--line-2);
}

.page-about .about-cadence__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-2);
  transition: padding-left var(--t) var(--ease), background var(--t) var(--ease);
}

.page-about .about-cadence__row:hover {
  padding-left: 10px;
  background: rgba(0, 229, 255, 0.04);
}

.page-about .about-cadence__key {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-about .about-cadence__val {
  margin: 0;
  max-width: 58ch;
  color: var(--slate);
  font-size: 14px;
  line-height: 1.78;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__title {
    max-width: 18ch;
  }

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

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

  .page-about .about-cadence__row {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about {
    --about-gap: 34px;
  }

  .page-about .about-band {
    padding: 68px 0;
  }

  .page-about .about-hero {
    padding-top: 22px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-split--reverse > figure {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .about-split--reverse > div {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .about-svc__row {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 22px;
    padding: 24px 0;
  }

  .page-about .about-svc__text {
    font-size: 15px;
    max-width: 64ch;
  }

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