/* ============================================================
   品牌总览 · page-about
   ============================================================ */

.page-about {
  --ab-nav-w: 268px;
  --ab-chapter-gap: clamp(56px, 8vw, 120px);
  --ab-inner-gap: clamp(18px, 2.4vw, 30px);
}

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(28px, 5vw, 64px) clamp(26px, 4vw, 48px);
  border-bottom: 1px solid var(--sn-line);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(760px 380px at 78% 8%, var(--sn-cyan-veil), transparent 70%),
    linear-gradient(114deg, transparent 62%, var(--sn-flame-veil) 62.2%, transparent 74%),
    linear-gradient(180deg, rgba(11, 21, 38, 0.7), transparent 46%);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image: repeating-linear-gradient(
    180deg,
    rgba(232, 237, 245, 0.035) 0px,
    rgba(232, 237, 245, 0.035) 1px,
    transparent 1px,
    transparent 4px
  );
}

.page-about .ab-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 56px);
}

@media (min-width: 1024px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }
}

.page-about .ab-hero__lead {
  min-width: 0;
}

.page-about .ab-hero__title {
  font-family: var(--sn-font-display);
  font-weight: 800;
  font-size: clamp(42px, 8.6vw, 104px);
  line-height: 0.94;
  letter-spacing: -0.015em;
  color: var(--sn-mist);
  margin: 14px 0 20px;
}

.page-about .ab-hero__lede {
  max-width: 58ch;
  color: var(--sn-text-soft);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  margin: 0 0 28px;
}

.page-about .ab-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .ab-hero__media {
  margin: 0;
  border-radius: var(--sn-r-lg);
  overflow: hidden;
  border: 1px solid var(--sn-line);
  background: var(--sn-midnight);
  box-shadow: 0 26px 70px rgba(5, 7, 12, 0.72);
}

.page-about .sn-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: inherit;
}

.page-about .ab-hero__media .sn-media__img {
  aspect-ratio: 16 / 9;
  filter: saturate(0.92) contrast(1.06);
}

.page-about .sn-media__caption {
  display: block;
  padding: 10px 14px 12px;
  font-size: 13px;
  color: var(--sn-cold);
  border-top: 1px solid var(--sn-line);
  background: linear-gradient(180deg, rgba(11, 21, 38, 0.2), var(--sn-midnight));
}

/* ---------- 年份刻度尺 ---------- */

.page-about .ab-scale {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: clamp(30px, 4.6vw, 54px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--sn-line-strong);
}

@media (min-width: 860px) {
  .page-about .ab-scale {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .ab-scale__item {
  position: relative;
  padding: 16px 16px 4px 0;
  border-right: 1px solid var(--sn-line);
}

.page-about .ab-scale__item:last-child {
  border-right: 0;
}

.page-about .ab-scale__item::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 2px;
  height: 11px;
  background: var(--sn-cold);
}

.page-about .ab-scale__item:nth-child(3)::before,
.page-about .ab-scale__item:nth-child(4)::before {
  background: var(--sn-cyan);
}

.page-about .ab-scale__item:nth-child(4)::before {
  box-shadow: 0 0 12px var(--sn-cyan);
}

.page-about .ab-scale__year {
  display: block;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--sn-cyan);
}

.page-about .ab-scale__note {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--sn-cold);
}

/* ---------- 主体骨架：左侧时间轴 + 右侧章节 ---------- */

.page-about .ab-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  padding-block: clamp(34px, 5vw, 76px) clamp(60px, 8vw, 120px);
}

@media (min-width: 1180px) {
  .page-about .ab-shell {
    grid-template-columns: var(--ab-nav-w) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 88px);
    align-items: start;
  }
}

/* ---------- 时间轴 / 目录 ---------- */

.page-about .ab-timeline {
  position: relative;
  min-width: 0;
}

@media (min-width: 1180px) {
  .page-about .ab-timeline {
    position: sticky;
    top: calc(var(--sn-status-h) + 32px);
  }
}

.page-about .ab-timeline__title {
  font-size: 11px;
  letter-spacing: 0.34em;
  color: var(--sn-cold);
  margin: 0 0 14px;
}

.page-about .ab-toc {
  position: relative;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
  scrollbar-width: thin;
}

@media (min-width: 1180px) {
  .page-about .ab-toc {
    display: block;
    overflow: visible;
    padding: 0 0 0 22px;
  }

  .page-about .ab-toc::before {
    content: "";
    position: absolute;
    left: 5px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--sn-cyan), rgba(43, 232, 192, 0.35) 42%, var(--sn-steel) 82%, transparent);
  }
}

.page-about .ab-toc__link {
  flex: 0 0 auto;
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 10px;
  padding: 9px 14px;
  border-radius: var(--sn-r-pill);
  border: 1px solid var(--sn-line);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.page-about .ab-toc__num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sn-cold);
}

.page-about .ab-toc__label {
  font-size: 14px;
  color: var(--sn-cold);
}

@media (min-width: 1180px) {
  .page-about .ab-toc__link {
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr);
    width: 100%;
    padding: 9px 10px 9px 0;
    border: 0;
    border-radius: 0 var(--sn-r-sm) var(--sn-r-sm) 0;
    white-space: normal;
  }

  .page-about .ab-toc__link::before {
    content: "";
    position: absolute;
    left: -20px;
    top: 50%;
    width: 8px;
    height: 8px;
    margin-top: -4px;
    border-radius: 50%;
    background: var(--sn-steel);
    box-shadow: 0 0 0 4px var(--sn-black);
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
  }

  .page-about .ab-toc__link:hover .ab-toc__label,
  .page-about .ab-toc__link:focus-visible .ab-toc__label {
    color: var(--sn-mist);
  }
}

.page-about .ab-toc__link[aria-current="true"],
.page-about .ab-toc__link:hover {
  border-color: var(--sn-cyan-line);
  background: var(--sn-cyan-veil);
}

.page-about .ab-toc__link[aria-current="true"] .ab-toc__num,
.page-about .ab-toc__link[aria-current="true"] .ab-toc__label {
  color: var(--sn-cyan);
}

@media (min-width: 1180px) {
  .page-about .ab-toc__link[aria-current="true"] {
    background: linear-gradient(90deg, var(--sn-cyan-veil), transparent 88%);
  }

  .page-about .ab-toc__link[aria-current="true"]::before {
    background: var(--sn-cyan);
    box-shadow: 0 0 0 4px var(--sn-black), 0 0 14px var(--sn-cyan);
  }
}

.page-about .ab-timeline__foot {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--sn-line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--sn-cold);
}

.page-about .ab-timeline__foot a {
  color: var(--sn-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--sn-cyan-line);
}

@media (max-width: 1179px) {
  .page-about .ab-timeline__foot {
    display: none;
  }
}

/* ---------- 章节 ---------- */

.page-about .ab-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--ab-chapter-gap);
}

.page-about .ab-chapter {
  position: relative;
  scroll-margin-top: calc(var(--sn-status-h) + 32px);
  min-width: 0;
}

.page-about .ab-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 14px;
  margin-bottom: clamp(20px, 3vw, 30px);
  border-bottom: 1px solid var(--sn-line-strong);
}

.page-about .ab-chapter__num {
  flex: 0 0 auto;
  font-size: clamp(26px, 3.6vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--sn-cyan);
  opacity: 0.34;
}

.page-about .ab-chapter__title {
  margin: 0;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--sn-mist);
}

.page-about .ab-chapter__lede {
  max-width: 62ch;
  margin: 0 0 clamp(24px, 3.4vw, 36px);
  font-size: 16px;
  line-height: 1.85;
  color: var(--sn-text-soft);
}

.page-about .ab-subTitle {
  margin: clamp(30px, 4vw, 44px) 0 18px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--sn-mist);
}

/* 01 四条内容线 */

.page-about .ab-lines {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 760px) {
  .page-about .ab-lines {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .ab-line {
  position: relative;
  padding: 22px 22px 22px 26px;
  border: 1px solid var(--sn-line);
  border-radius: var(--sn-r-md);
  background: linear-gradient(158deg, var(--sn-midnight) 0%, rgba(11, 21, 38, 0.35) 100%);
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.page-about .ab-line::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  border-radius: 3px;
  background: var(--sn-cyan);
}

.page-about .ab-line:nth-child(2)::before {
  background: var(--sn-flame);
}

.page-about .ab-line:nth-child(3)::before {
  background: var(--sn-violet);
}

.page-about .ab-line:nth-child(4)::before {
  background: var(--sn-gold);
}

.page-about .ab-line:hover {
  transform: translateY(-4px);
  border-color: var(--sn-cyan-line);
}

.page-about .ab-line h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--sn-mist);
}

.page-about .ab-line p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sn-text-soft);
}

/* 02 发展历程 */

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

.page-about .ab-era__item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 0 0 34px 26px;
  border-left: 1px solid var(--sn-line);
}

.page-about .ab-era__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .ab-era__item::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sn-black);
  border: 2px solid var(--sn-cyan);
}

.page-about .ab-era__item:last-child::before {
  background: var(--sn-flame);
  border-color: var(--sn-flame);
  box-shadow: 0 0 14px var(--sn-flame-line);
}

@media (min-width: 680px) {
  .page-about .ab-era__item {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }
}

.page-about .ab-era__year {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--sn-gold);
}

.page-about .ab-era__body h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--sn-mist);
}

.page-about .ab-era__body p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--sn-text-soft);
}

/* 03 团队 */

.page-about .ab-team__media {
  margin: 0 0 clamp(26px, 3.6vw, 40px);
  border-radius: var(--sn-r-md);
  overflow: hidden;
  border: 1px solid var(--sn-line);
  background: var(--sn-midnight);
}

.page-about .ab-team__media .sn-media__img {
  aspect-ratio: 12 / 7;
}

.page-about .ab-team {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--sn-line);
}

.page-about .ab-team__row {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr) 42px;
  align-items: center;
  column-gap: 14px;
  row-gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--sn-line);
}

@media (min-width: 680px) {
  .page-about .ab-team__row {
    grid-template-columns: 104px minmax(0, 1fr) 52px;
    column-gap: 20px;
  }
}

.page-about .ab-team__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--sn-mist);
}

.page-about .ab-team__track {
  display: block;
  height: 10px;
  border-radius: var(--sn-r-pill);
  background: rgba(138, 148, 166, 0.13);
  overflow: hidden;
}

.page-about .ab-team__fill {
  display: block;
  width: var(--w, 0%);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--sn-cyan) 0%, rgba(43, 232, 192, 0.22) 100%);
  transition: filter 0.22s ease, box-shadow 0.22s ease;
}

.page-about .ab-team__row:hover .ab-team__fill {
  filter: brightness(1.45);
  box-shadow: 0 0 18px var(--sn-cyan-line);
}

.page-about .ab-team__count {
  font-size: 22px;
  font-weight: 700;
  text-align: right;
  color: var(--sn-cyan);
}

.page-about .ab-team__duty {
  grid-column: 1 / -1;
  margin: 0;
  max-width: 66ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--sn-cold);
}

/* 04 内容来源 */

.page-about .ab-sources {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 760px) {
  .page-about .ab-sources {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }
}

.page-about .ab-source {
  padding: 4px 0 4px 22px;
  border-left: 3px solid var(--sn-gold);
}

.page-about .ab-source h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--sn-mist);
}

.page-about .ab-source p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--sn-text-soft);
}

.page-about .ab-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 820px) {
  .page-about .ab-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

.page-about .ab-flow__step {
  padding: 20px;
  border-radius: var(--sn-r-md);
  border: 1px dashed var(--sn-line-strong);
  background: rgba(28, 37, 54, 0.28);
}

.page-about .ab-flow__no {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--sn-flame);
}

.page-about .ab-flow__step h4 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--sn-mist);
}

.page-about .ab-flow__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--sn-text-soft);
}

/* 05 版本演进 */

.page-about .ab-vers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

@media (min-width: 860px) {
  .page-about .ab-vers {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 36px;
  }
}

.page-about .ab-vers__stat {
  padding: 26px 24px;
  border-radius: var(--sn-r-md);
  border: 1px solid var(--sn-line);
  background: linear-gradient(150deg, var(--sn-midnight), rgba(5, 7, 12, 0.5));
}

.page-about .ab-vers__num {
  margin: 0;
  font-family: var(--sn-font-display);
  font-size: clamp(62px, 11vw, 112px);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--sn-cyan);
  text-shadow: 0 0 40px rgba(43, 232, 192, 0.28);
}

.page-about .ab-vers__unit {
  margin: 10px 0 18px;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--sn-mist);
}

.page-about .ab-vers__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--sn-text-soft);
}

.page-about .ab-vers__media {
  margin: 0;
  border-radius: var(--sn-r-md);
  overflow: hidden;
  border: 1px solid var(--sn-line);
  background: var(--sn-midnight);
}

.page-about .ab-vers__media .sn-media__img {
  aspect-ratio: 3 / 2;
  filter: saturate(0.85) contrast(1.08);
}

.page-about .ab-compare {
  margin-top: clamp(28px, 4vw, 42px);
  padding: 22px 24px;
  border-radius: var(--sn-r-md);
  border: 1px solid var(--sn-line);
  background: rgba(28, 37, 54, 0.24);
}

.page-about .ab-compare__label {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--sn-violet);
}

.page-about .ab-compare__list {
  display: grid;
  gap: 8px;
}

.page-about .ab-folds {
  margin-top: clamp(24px, 3.4vw, 36px);
  display: grid;
  gap: 12px;
}

.page-about .ab-fold {
  border: 1px solid var(--sn-line);
  border-radius: var(--sn-r-md);
  background: rgba(11, 21, 38, 0.42);
  overflow: hidden;
}

.page-about .ab-fold[open] {
  border-color: var(--sn-cyan-line);
  background: linear-gradient(140deg, var(--sn-cyan-veil), rgba(11, 21, 38, 0.5));
}

.page-about .ab-fold .sn-fold__summary {
  cursor: pointer;
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 700;
  color: var(--sn-mist);
  letter-spacing: 0.01em;
}

.page-about .ab-fold .sn-fold__body {
  padding: 0 20px 18px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--sn-text-soft);
}

.page-about .ab-fold .sn-fold__body p {
  margin: 0;
  max-width: 64ch;
}

/* 06 常用人群 */

.page-about .ab-aud {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 700px) {
  .page-about .ab-aud {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-about .ab-aud {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .ab-aud__item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: 22px 20px;
  border-radius: var(--sn-r-md);
  border: 1px solid var(--sn-line);
  background: linear-gradient(165deg, rgba(28, 37, 54, 0.55), rgba(5, 7, 12, 0.4));
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.page-about .ab-aud__item:hover {
  transform: translateY(-4px);
  border-color: var(--sn-cyan-line);
}

.page-about .ab-aud__item h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--sn-mist);
}

.page-about .ab-aud__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--sn-text-soft);
}

.page-about .ab-aud__link {
  margin-top: auto;
  padding-top: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--sn-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--sn-cyan-line);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .ab-aud__link:hover {
  color: var(--sn-flame);
  border-color: var(--sn-flame-line);
}

/* 07 一直在做的事 */

.page-about .ab-pledge {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  counter-reset: ab-pledge;
}

@media (min-width: 760px) {
  .page-about .ab-pledge {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}

.page-about .ab-pledge__item {
  position: relative;
  padding: 22px 0 22px 46px;
  border-bottom: 1px solid var(--sn-line);
}

.page-about .ab-pledge__no {
  position: absolute;
  left: 0;
  top: 24px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--sn-gold);
}

.page-about .ab-pledge__item h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--sn-mist);
}

.page-about .ab-pledge__item p {
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--sn-text-soft);
}

/* 08 坐标与联络 */

.page-about .ab-coord {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: clamp(24px, 3.6vw, 40px);
  border-radius: var(--sn-r-lg);
  border: 1px solid var(--sn-line);
  background:
    radial-gradient(620px 260px at 88% 0%, var(--sn-cyan-veil), transparent 72%),
    linear-gradient(160deg, var(--sn-midnight), rgba(5, 7, 12, 0.62));
}

@media (min-width: 900px) {
  .page-about .ab-coord {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }
}

.page-about .ab-coord__main p {
  margin: 0 0 16px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--sn-text-soft);
}

.page-about .ab-coord__main .sn-btn {
  margin-top: 6px;
}

.page-about .ab-coord__meta {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-about .ab-coord__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--sn-line);
}

.page-about .ab-coord__row:last-child {
  border-bottom: 0;
}

@media (min-width: 520px) {
  .page-about .ab-coord__row {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

.page-about .ab-coord__row dt {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--sn-cold);
}

.page-about .ab-coord__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--sn-mist);
  word-break: break-word;
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-line,
  .page-about .ab-aud__item,
  .page-about .ab-team__fill {
    transition: none;
  }

  .page-about .ab-line:hover,
  .page-about .ab-aud__item:hover {
    transform: none;
  }
}

.page-about {
  --w: 1rem;
}