.page-about {
  --about-panel: rgba(10, 42, 66, 0.62);
  --about-panel-soft: rgba(19, 91, 120, 0.22);
  --about-line: var(--hairline);
  --about-body: var(--slate-300);
  background: var(--ink-950);
  color: var(--mist-050);
  overflow-x: hidden;
  font-family: var(--font-cn);
}

.page-about .about-hero {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 44px);
  padding-top: clamp(20px, 4vw, 48px);
  padding-bottom: clamp(36px, 6vw, 84px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  left: -45%;
  width: 130%;
  height: 520px;
  background:
    radial-gradient(52% 60% at 34% 32%, rgba(24, 224, 200, 0.2), transparent 72%),
    radial-gradient(48% 52% at 78% 8%, rgba(19, 91, 120, 0.55), transparent 74%);
  filter: blur(4px);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__main,
.page-about .about-hero__side {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__title {
  margin: 14px 0 20px;
  font-size: clamp(34px, 8.4vw, 80px);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 700;
}

.page-about .about-hero__title span {
  color: var(--cyan-200);
}

.page-about .about-hero__lead {
  max-width: 40ch;
  margin: 0;
  font-size: clamp(15px, 2.4vw, 18px);
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__side {
  border-top: 1px solid var(--about-line);
  padding-top: 22px;
}

.page-about .about-side__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-200);
}

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

.page-about .about-index__item + .about-index__item {
  border-top: 1px solid var(--about-line);
}

.page-about .about-index__link {
  display: block;
  padding: 11px 0;
  color: var(--mist-050);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.5;
  transition: color 200ms var(--ease), padding-left 200ms var(--ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--cyan-500);
  padding-left: 6px;
}

.page-about .about-figures {
  margin: 26px 0 0;
  display: grid;
  gap: 14px;
}

.page-about .about-figures__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--about-line);
  padding-bottom: 10px;
}

.page-about .about-figures__key {
  margin: 0;
  font-size: 13px;
  color: var(--about-body);
}

.page-about .about-figures__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--amber-500);
  white-space: nowrap;
}

.page-about .about-figures__val span {
  font-size: 12px;
  color: var(--about-body);
  margin-left: 3px;
}

/* 通用区块 */
.page-about .about-section {
  position: relative;
  padding-block: clamp(44px, 8vw, 96px);
  border-top: 1px solid var(--about-line);
}

.page-about .about-h2 {
  margin: 12px 0 18px;
  font-size: clamp(25px, 4.6vw, 44px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.page-about .about-p {
  max-width: 40ch;
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .about-section__head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .about-section__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-body);
}

/* 01 定位 */
.page-about .about-position {
  overflow: hidden;
  background: linear-gradient(165deg, var(--ink-950) 0%, var(--ink-800) 100%);
}

.page-about .about-position__texture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  filter: saturate(0.7);
  pointer-events: none;
}

.page-about .about-position__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 24px;
}

.page-about .about-position__aside {
  order: -1;
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
}

.page-about .about-position__aside .note-vertical {
  color: var(--cyan-200);
  letter-spacing: 0.28em;
  font-size: 12px;
  margin: 0;
  writing-mode: vertical-rl;
  border-left: 1px solid var(--about-line);
  padding-left: 8px;
}

/* 02 团队 */
.page-about .about-team__layout {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-about .about-team__cards {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 10px;
  margin-inline: calc(-1 * var(--gutter));
  padding-inline: var(--gutter);
  scrollbar-width: thin;
}

.page-about .about-card {
  flex: 0 0 78%;
  scroll-snap-align: start;
  background: var(--about-panel);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  padding: 22px 20px 24px;
  box-shadow: var(--shadow-soft);
}

.page-about .about-card__num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 40px;
  line-height: 1;
  color: var(--cyan-200);
}

.page-about .about-card__unit {
  font-size: 13px;
  margin-left: 4px;
  color: var(--about-body);
}

.page-about .about-card__title {
  margin: 0 0 10px;
  font-size: 19px;
  letter-spacing: -0.01em;
}

.page-about .about-card__text {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .about-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-about .about-card__list li {
  position: relative;
  padding-left: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist-050);
}

.page-about .about-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--amber-500);
}

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

.page-about .about-team__figure .media__frame {
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--sea-600);
}

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

.page-about .about-team__figure .media__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--about-body);
}

/* 03 节奏 */
.page-about .about-ritual {
  background: linear-gradient(200deg, var(--ink-800) 0%, var(--ink-950) 72%);
}

.page-about .about-ritual__grid {
  display: grid;
  gap: clamp(26px, 5vw, 52px);
  align-items: start;
}

.page-about .about-steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-steps__item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-steps__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber-500);
}

.page-about .about-steps__body {
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist-050);
}

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

.page-about .about-ritual__figure .media__frame {
  border: 1px solid var(--about-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(4, 18, 31, 0.7);
}

.page-about .about-ritual__figure .media__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

.page-about .about-ritual__figure .media__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--about-body);
}

.page-about .about-stats {
  display: grid;
  gap: 1px;
  margin-top: clamp(30px, 5vw, 56px);
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-stats__item {
  background: rgba(4, 18, 31, 0.82);
  padding: 20px 18px;
}

.page-about .about-stats__num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 44px);
  line-height: 1;
  color: var(--cyan-500);
}

.page-about .about-stats__num span {
  font-size: 13px;
  margin-left: 5px;
  color: var(--about-body);
}

.page-about .about-stats__label {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--about-body);
}

/* 04 覆盖与合作 */
.page-about .about-reach__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-partner {
  background: var(--about-panel);
  border: 1px solid var(--about-line);
  border-left: 2px solid var(--cyan-500);
  border-radius: var(--radius-md);
  padding: 22px 20px 24px;
}

.page-about .about-partner__tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan-200);
}

.page-about .about-partner__title {
  margin: 0 0 16px;
  font-size: 20px;
  letter-spacing: -0.01em;
}

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

.page-about .about-partner__list li {
  display: grid;
  gap: 4px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-partner__list strong {
  font-size: 15px;
  color: var(--amber-500);
  font-weight: 600;
}

.page-about .about-partner__list span {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--about-body);
}

.page-about .about-partner__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--about-body);
}

/* 05 准则与认可 */
.page-about .about-principles {
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-principle {
  background: rgba(10, 42, 66, 0.5);
  padding: 22px 20px 24px;
}

.page-about .about-principle__idx {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--coral-500);
}

.page-about .about-principle__title {
  margin: 0 0 10px;
  font-size: 20px;
}

.page-about .about-principle__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .about-honor {
  margin-top: clamp(26px, 4vw, 44px);
  padding: 24px 20px;
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, rgba(19, 91, 120, 0.45), rgba(4, 18, 31, 0.2));
  border: 1px solid var(--about-line);
  display: grid;
  gap: 12px;
  justify-items: start;
}

.page-about .about-honor__mark {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--amber-500);
}

.page-about .about-honor__text {
  margin: 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist-050);
}

.page-about .about-next {
  margin-top: clamp(28px, 4vw, 48px);
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-next__link {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  text-decoration: none;
  color: var(--mist-050);
  transition: color 200ms var(--ease);
}

.page-about .about-next__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan-200);
}

.page-about .about-next__v {
  font-size: 15px;
  line-height: 1.6;
}

.page-about .about-next__link:hover .about-next__v,
.page-about .about-next__link:focus-visible .about-next__v {
  color: var(--cyan-500);
}

@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-card {
    flex-basis: 46%;
  }

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

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

  .page-about .about-next__link {
    padding: 18px 18px 18px 0;
  }

  .page-about .about-next__link + .about-next__link {
    border-left: 1px solid var(--about-line);
    padding-left: 18px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1fr) 296px;
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-hero__side {
    position: sticky;
    top: 90px;
    border-top: none;
    border-left: 1px solid var(--about-line);
    padding-top: 0;
    padding-left: 22px;
  }

  .page-about .about-position__grid {
    grid-template-columns: minmax(0, 1fr) 96px;
    gap: 48px;
  }

  .page-about .about-position__aside {
    order: 0;
    justify-content: center;
  }

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

  .page-about .about-team__cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    overflow: visible;
    margin-inline: 0;
    padding-inline: 0;
    padding-bottom: 0;
    gap: 18px;
    align-items: start;
  }

  .page-about .about-card {
    flex: none;
  }

  .page-about .about-card:nth-child(2) {
    margin-top: 34px;
  }

  .page-about .about-card:nth-child(3) {
    margin-top: 14px;
  }

  .page-about .about-team__figure {
    margin-top: 44px;
  }

  .page-about .about-ritual__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .about-honor {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 28px 32px;
  }

  .page-about .about-honor__mark {
    grid-column: 1 / -1;
  }

  .page-about .about-honor__text {
    grid-column: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__link,
  .page-about .about-next__link {
    transition: none;
  }
}