.page-about {
  --about-r: 24px;
  --about-stack: clamp(52px, 6.4vw, 92px);
  color: var(--paper);
}

.page-about .about-wrap {
  width: min(1240px, 100%);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.page-about .about-crumb {
  padding-block: 14px 0;
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

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

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--white);
  text-decoration: underline;
}

/* ── 首屏 ── */
.page-about .about-hero {
  display: grid;
  gap: 26px;
  padding-block: clamp(20px, 3vw, 40px) clamp(28px, 4vw, 48px);
}

.page-about .about-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mint);
}

.page-about .about-kicker__rule {
  display: block;
  width: 34px;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-sans);
  font-size: clamp(34px, 7.4vw, 66px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  transform: skewX(-3deg);
  transform-origin: left bottom;
  color: var(--white);
}

.page-about .about-hero__lead {
  max-width: 56ch;
  margin: 0 0 26px;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  color: rgba(232, 245, 238, 0.82);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 26px;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 12px;
  border-radius: var(--r-md);
  background: rgba(15, 61, 46, 0.66);
  border: 1px solid var(--line);
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--brand);
}

.page-about .about-stat__lbl {
  font-size: 11.5px;
  line-height: 1.4;
  color: var(--muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-xl);
  border: 1px solid var(--line);
  background: linear-gradient(155deg, var(--pitch), var(--navy));
}

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

.page-about .about-hero__figcaption,
.page-about .about-hero__cap {
  position: absolute;
  left: 14px;
  bottom: 14px;
  right: 14px;
  margin: 0;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(7, 18, 13, 0.82);
  border: 1px solid var(--line-strong);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--paper);
  text-align: center;
}

.page-about .about-hero__cap .num {
  color: var(--brand);
  font-family: var(--font-mono);
  font-weight: 700;
}

/* ── 通用区块 ── */
.page-about .about-section {
  padding-block: var(--about-stack);
}

.page-about .about-head {
  margin-bottom: clamp(24px, 3vw, 40px);
  max-width: 72ch;
}

.page-about .about-head .eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mint);
  background: rgba(31, 169, 122, 0.1);
}

.page-about .about-head__title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-head--onDark .about-head__title {
  color: var(--white);
}

.page-about .about-head--onDark .eyebrow {
  color: var(--yellow);
  border-color: rgba(242, 194, 48, 0.4);
  background: rgba(242, 194, 48, 0.12);
}

/* ── 服务对象 ── */
.page-about .about-who__grid {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-who__item {
  position: relative;
  padding: 22px 20px 24px;
  border-radius: var(--r-lg);
  background: var(--navy);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-who__item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--brand), transparent);
}

.page-about .about-who__h {
  margin: 14px 0 10px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
}

.page-about .about-who__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(232, 245, 238, 0.74);
}

/* ── 内容体系战术板 ── */
.page-about .about-system {
  position: relative;
}

.page-about .about-board {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
}

.page-about .about-board__node {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 20px 18px 18px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid rgba(7, 18, 13, 0.1);
  color: var(--ink);
  transition: transform 240ms var(--ease), box-shadow 240ms var(--ease), border-color 240ms var(--ease);
}

.page-about .about-board__node::after {
  content: "";
  position: absolute;
  inset: auto 14px 12px auto;
  width: 26px;
  height: 26px;
  border-right: 2px dashed rgba(7, 18, 13, 0.16);
  border-bottom: 2px dashed rgba(7, 18, 13, 0.16);
  border-radius: 0 0 10px 0;
}

.page-about .about-board__node:hover,
.page-about .about-board__node:focus-within {
  transform: translateY(-4px);
  border-color: var(--brand);
  box-shadow: 0 16px 32px -18px rgba(31, 169, 122, 0.72);
}

.page-about .about-board__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-about .about-board__h {
  margin: 8px 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

.page-about .about-board__use {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-board__go {
  margin-top: auto;
  align-self: flex-start;
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(31, 169, 122, 0.14);
  color: #0c5c42;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background 180ms var(--ease), color 180ms var(--ease);
}

.page-about .about-board__node:hover .about-board__go,
.page-about .about-board__node:focus-within .about-board__go {
  background: var(--brand);
  color: var(--white);
}

/* ── 数据来源 ── */
.page-about .about-source {
  display: grid;
  gap: 26px;
}

.page-about .about-source__p {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(232, 245, 238, 0.78);
}

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

.page-about .about-source__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(232, 245, 238, 0.72);
}

.page-about .about-source__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--brand);
}

.page-about .about-source__figure {
  position: relative;
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: var(--pitch);
}

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

.page-about .about-source__cap {
  display: block;
  padding: 10px 16px 12px;
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.05em;
  color: var(--muted);
  background: rgba(7, 18, 13, 0.62);
}

/* ── 刷新节奏 ── */
.page-about .about-cadence {
  margin-block: clamp(20px, 3vw, 40px);
  padding-block: clamp(40px, 5vw, 72px);
  background:
    radial-gradient(120% 140% at 88% 0%, rgba(31, 169, 122, 0.22), transparent 58%),
    linear-gradient(180deg, var(--navy), var(--ink));
  border-block: 1px solid var(--line-strong);
}

.page-about .about-cadence__lead {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(232, 245, 238, 0.74);
}

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

.page-about .about-cadence__big {
  padding: 22px 20px;
  border-radius: var(--r-lg);
  background: var(--white);
  color: var(--ink);
  border: 1px solid rgba(7, 18, 13, 0.08);
}

.page-about .about-cadence__num {
  font-family: var(--font-mono);
  font-size: clamp(46px, 9vw, 72px);
  font-weight: 700;
  line-height: 0.9;
  color: var(--brand);
  letter-spacing: -0.03em;
}

.page-about .about-cadence__unit {
  display: inline-block;
  margin-left: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--muted);
}

.page-about .about-cadence__big p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-cadence__cell {
  padding: 18px;
  border-radius: var(--r-md);
  background: rgba(15, 61, 46, 0.72);
  border: 1px solid var(--line);
}

.page-about .about-cadence__k {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(155, 231, 196, 0.16);
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--mint);
}

.page-about .about-cadence__cell p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(232, 245, 238, 0.7);
}

/* ── 发展历程 ── */
.page-about .about-track__list {
  position: relative;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-track__item {
  position: relative;
  padding: 20px 18px 22px;
  border-radius: var(--r-lg);
  background: rgba(15, 61, 46, 0.55);
  border: 1px solid var(--line);
}

.page-about .about-track__rail {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.page-about .about-track__year {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--brand);
}

.page-about .about-track__h {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
}

.page-about .about-track__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(232, 245, 238, 0.72);
}

/* ── 协作网络 ── */
.page-about .about-net__banner {
  margin: 0;
  overflow: hidden;
  border-radius: 0;
  background: var(--pitch);
}

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

.page-about .about-net__body {
  padding-block: clamp(32px, 4vw, 60px);
}

.page-about .about-net__lead {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(232, 245, 238, 0.74);
}

.page-about .about-net__grid {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-net__card {
  padding: 20px 18px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid rgba(7, 18, 13, 0.09);
  color: var(--ink);
  transition: opacity 240ms var(--ease), transform 240ms var(--ease);
}

.page-about .about-net__card.is-dimmed {
  opacity: 0.4;
}

.page-about .about-net__num {
  display: inline-block;
  margin-bottom: 6px;
  padding: 2px 10px;
  border-radius: 6px;
  background: var(--brand);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.35;
}

.page-about .about-net__card h3 {
  margin: 0 0 8px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-net__card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ── 收尾 ── */
.page-about .about-next {
  padding-bottom: clamp(48px, 6vw, 84px);
}

.page-about .about-next__box {
  display: grid;
  gap: 22px;
  padding: clamp(24px, 3.4vw, 40px);
  border-radius: var(--r-xl);
  background:
    linear-gradient(120deg, rgba(31, 169, 122, 0.16), transparent 62%),
    var(--pitch);
  border: 1px solid var(--line-strong);
}

.page-about .about-next__p {
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(232, 245, 238, 0.76);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: start;
}

/* ── 响应式 ── */
@media (min-width: 640px) {
  .page-about .about-who__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.06fr);
    align-items: center;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-source {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(24px, 3.6vw, 52px);
  }

  .page-about .about-source__figure {
    margin-top: 46px;
    margin-bottom: -46px;
  }

  .page-about .about-cadence__big {
    grid-column: span 1;
  }

  .page-about .about-cadence__grid {
    grid-template-columns: 1.15fr 1fr 1fr;
    grid-template-rows: auto auto;
  }

  .page-about .about-cadence__big {
    grid-row: span 2;
  }

  .page-about .about-track__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }

  .page-about .about-net__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-next__box {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: center;
    gap: 32px;
  }

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

@media (min-width: 1200px) {
  .page-about .about-board {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-board__node,
  .page-about .about-net__card,
  .page-about .about-board__go {
    transition: none;
  }

  .page-about .about-board__node:hover,
  .page-about .about-board__node:focus-within {
    transform: none;
  }
}

.page-about {
  --about-r: 24px;
  --about-stack: clamp(52px, 6.4vw, 92px);
  color: var(--paper);
}

.page-about .about-wrap {
  width: min(1240px, 100%);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.page-about .about-crumb {
  padding-block: 14px 0;
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

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

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--white);
  text-decoration: underline;
}

.page-about .about-hero {
  display: grid;
  gap: 26px;
  padding-block: clamp(20px, 3vw, 40px) clamp(28px, 4vw, 48px);
}

.page-about .about-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mint);
}

.page-about .about-kicker__rule {
  display: block;
  width: 34px;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-sans);
  font-size: clamp(34px, 7.4vw, 66px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  transform: skewX(-3deg);
  transform-origin: left bottom;
  color: var(--white);
}

.page-about .about-hero__lead {
  max-width: 56ch;
  margin: 0 0 26px;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  color: rgba(232, 245, 238, 0.82);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 26px;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 12px;
  border-radius: var(--r-md);
  background: rgba(15, 61, 46, 0.66);
  border: 1px solid var(--line);
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--brand);
}

.page-about .about-stat__lbl {
  font-size: 11.5px;
  line-height: 1.4;
  color: var(--muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-xl);
  border: 1px solid var(--line);
  background: linear-gradient(155deg, var(--pitch), var(--navy));
}

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

.page-about .about-hero__cap {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  margin: 0;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(7, 18, 13, 0.82);
  border: 1px solid var(--line-strong);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--paper);
  text-align: center;
}

.page-about .about-hero__cap .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--brand);
}

.page-about .about-section {
  padding-block: var(--about-stack);
}

.page-about .about-head {
  max-width: 72ch;
  margin-bottom: clamp(24px, 3vw, 40px);
}

.page-about .about-head .eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(31, 169, 122, 0.1);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mint);
}

.page-about .about-head__title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-head--onDark .eyebrow {
  color: var(--yellow);
  border-color: rgba(242, 194, 48, 0.4);
  background: rgba(242, 194, 48, 0.12);
}

.page-about .about-head--onDark .about-head__title {
  color: var(--white);
}

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

.page-about .about-who__item {
  position: relative;
  overflow: hidden;
  padding: 22px 20px 24px;
  border-radius: var(--r-lg);
  background: var(--navy);
  border: 1px solid var(--line);
}

.page-about .about-who__item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--brand), transparent);
}

.page-about .about-who__h {
  margin: 14px 0 10px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
}

.page-about .about-who__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(232, 245, 238, 0.74);
}

.page-about .about-board {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
}

.page-about .about-board__node {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 20px 18px 18px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid rgba(7, 18, 13, 0.1);
  color: var(--ink);
  transition: transform 240ms var(--ease), box-shadow 240ms var(--ease), border-color 240ms var(--ease);
}

.page-about .about-board__node::after {
  content: "";
  position: absolute;
  inset: auto 14px 12px auto;
  width: 26px;
  height: 26px;
  border-right: 2px dashed rgba(7, 18, 13, 0.16);
  border-bottom: 2px dashed rgba(7, 18, 13, 0.16);
  border-radius: 0 0 10px 0;
}

.page-about .about-board__node:hover,
.page-about .about-board__node:focus-within,
.page-about .about-board__node:focus {
  transform: translateY(-4px);
  border-color: var(--brand);
  box-shadow: 0 16px 32px -18px rgba(31, 169, 122, 0.72);
  outline: none;
}

.page-about .about-board__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-about .about-board__h {
  margin: 8px 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

.page-about .about-board__use {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-board__go {
  align-self: flex-start;
  margin-top: auto;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(31, 169, 122, 0.14);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #0c5c42;
  text-decoration: none;
  transition: background 180ms var(--ease), color 180ms var(--ease);
}

.page-about .about-board__node:hover .about-board__go,
.page-about .about-board__node:focus-within .about-board__go {
  background: var(--brand);
  color: var(--white);
}

.page-about .about-source {
  display: grid;
  gap: 26px;
}

.page-about .about-source__p {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(232, 245, 238, 0.78);
}

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

.page-about .about-source__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(232, 245, 238, 0.72);
}

.page-about .about-source__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--brand);
}

.page-about .about-source__figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-xl);
  border: 1px solid var(--line-strong);
  background: var(--pitch);
}

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

.page-about .about-source__cap {
  display: block;
  padding: 10px 16px 12px;
  background: rgba(7, 18, 13, 0.62);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.page-about .about-cadence {
  margin-block: clamp(20px, 3vw, 40px);
  padding-block: clamp(40px, 5vw, 72px);
  background:
    radial-gradient(120% 140% at 88% 0%, rgba(31, 169, 122, 0.22), transparent 58%),
    linear-gradient(180deg, var(--navy), var(--ink));
  border-block: 1px solid var(--line-strong);
}

.page-about .about-cadence__lead {
  max-width: 60ch;
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(232, 245, 238, 0.74);
}

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

.page-about .about-cadence__big {
  padding: 22px 20px;
  border-radius: var(--r-lg);
  background: var(--white);
  border: 1px solid rgba(7, 18, 13, 0.08);
  color: var(--ink);
}

.page-about .about-cadence__num {
  font-family: var(--font-mono);
  font-size: clamp(46px, 9vw, 72px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--brand);
}

.page-about .about-cadence__unit {
  display: inline-block;
  margin-left: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--muted);
}

.page-about .about-cadence__big p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-cadence__cell {
  padding: 18px;
  border-radius: var(--r-md);
  background: rgba(15, 61, 46, 0.72);
  border: 1px solid var(--line);
}

.page-about .about-cadence__k {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(155, 231, 196, 0.16);
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--mint);
}

.page-about .about-cadence__cell p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(232, 245, 238, 0.7);
}

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

.page-about .about-track__item {
  position: relative;
  padding: 20px 18px 22px;
  border-radius: var(--r-lg);
  background: rgba(15, 61, 46, 0.55);
  border: 1px solid var(--line);
}

.page-about .about-track__rail {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.page-about .about-track__year {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--brand);
}

.page-about .about-track__h {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
}

.page-about .about-track__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(232, 245, 238, 0.72);
}

.page-about .about-net__banner {
  margin: 0;
  overflow: hidden;
  background: var(--pitch);
}

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

.page-about .about-net__body {
  padding-block: clamp(32px, 4vw, 60px);
}

.page-about .about-net__lead {
  max-width: 62ch;
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(232, 245, 238, 0.74);
}

.page-about .about-net__grid {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-net__card {
  padding: 20px 18px;
  border-radius: var(--r-lg);
  background: var(--paper);
  border: 1px solid rgba(7, 18, 13, 0.09);
  color: var(--ink);
  transition: opacity 240ms var(--ease), transform 240ms var(--ease);
}

.page-about .about-net__card.is-dimmed {
  opacity: 0.4;
}

.page-about .about-net__num {
  display: inline-block;
  margin-bottom: 6px;
  padding: 2px 10px;
  border-radius: 6px;
  background: var(--brand);
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
}

.page-about .about-net__card h3 {
  margin: 0 0 8px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-net__card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .about-next {
  padding-bottom: clamp(48px, 6vw, 84px);
}

.page-about .about-next__box {
  display: grid;
  gap: 22px;
  padding: clamp(24px, 3.4vw, 40px);
  border-radius: var(--r-xl);
  background:
    linear-gradient(120deg, rgba(31, 169, 122, 0.16), transparent 62%),
    var(--pitch);
  border: 1px solid var(--line-strong);
}

.page-about .about-next__p {
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(232, 245, 238, 0.76);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: start;
}

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

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

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

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.06fr);
    align-items: center;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-source {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(24px, 3.6vw, 52px);
  }

  .page-about .about-source__figure {
    margin-top: 46px;
    margin-bottom: -46px;
  }

  .page-about .about-cadence__grid {
    grid-template-columns: 1.15fr 1fr 1fr;
    grid-template-rows: auto auto;
  }

  .page-about .about-cadence__big {
    grid-column: span 1;
    grid-row: span 2;
  }

  .page-about .about-track__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }

  .page-about .about-net__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-next__box {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: center;
    gap: 32px;
  }

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

@media (min-width: 1200px) {
  .page-about .about-board {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-board__node,
  .page-about .about-net__card,
  .page-about .about-board__go {
    transition: none;
  }

  .page-about .about-board__node:hover,
  .page-about .about-board__node:focus-within {
    transform: none;
  }
}