.page-about {
  --about-gap: clamp(44px, 6.5vw, 88px);
  --about-indent: clamp(38px, 6vw, 84px);
  background-color: var(--pitch);
  color: var(--chalk);
  font-family: var(--font-body);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(6px, 1vw, 12px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(18px, 3.4vw, 40px) 0 clamp(46px, 7vw, 94px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: end;
}

.page-about .about-hero__kicker {
  margin: 0 0 clamp(12px, 2vw, 20px);
  color: var(--cyan);
  letter-spacing: 0.22em;
  font-size: 11px;
}

.page-about .about-hero__title {
  margin: 0 0 clamp(16px, 2.6vw, 26px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.2vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.012em;
  color: var(--chalk);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-about .about-hero__deck {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: var(--chalk);
  opacity: 0.88;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 1px;
  background: var(--grid-soft);
}

.page-about .about-fact {
  min-width: 0;
  background: var(--pitch);
  padding: 13px 15px;
}

.page-about .about-fact dt {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-about .about-fact dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: clamp(18px, 2.5vw, 25px);
  line-height: 1.2;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

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

.page-about .about-hero__figure .figure__media {
  aspect-ratio: 14 / 9;
  overflow: hidden;
}

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

/* ---------- 赛季轴主区 ---------- */
.page-about .about-record {
  padding: clamp(46px, 7vw, 96px) 0 clamp(54px, 8vw, 110px);
  border-top: 1px solid var(--grid-faint);
}

.page-about .about-head {
  margin-bottom: clamp(30px, 5vw, 58px);
}

.page-about .about-head .section__note {
  max-width: 56ch;
}

.page-about .about-axis {
  padding-left: clamp(0px, 3vw, 22px);
}

.page-about .about-slice {
  position: relative;
  margin-left: clamp(10px, 2.4vw, 24px);
  padding: 0 0 var(--about-gap) var(--about-indent);
  border-left: 2px solid var(--grid);
}

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

.page-about .about-slice__mark {
  position: absolute;
  left: -8px;
  top: 7px;
  width: 14px;
  height: 14px;
  background: var(--pitch);
  border: 2px solid var(--grid);
  transition: background var(--t-base) var(--ease), border-color var(--t-base) var(--ease),
    box-shadow var(--t-base) var(--ease);
}

.page-about .about-slice[data-active="true"] .about-slice__mark {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 5px var(--cyan-12);
}

.page-about .about-slice__era {
  position: absolute;
  left: -38px;
  top: 8px;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--mist);
  opacity: 0.75;
  white-space: nowrap;
}

.page-about .about-slice h3 {
  margin: 0 0 clamp(12px, 1.8vw, 18px);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.7vw, 31px);
  line-height: 1.24;
  letter-spacing: -0.005em;
  color: var(--chalk);
}

.page-about .about-slice p {
  margin: 0 0 14px;
  max-width: 64ch;
  font-size: clamp(14.5px, 1.55vw, 16.5px);
  line-height: 1.9;
  color: var(--chalk);
  opacity: 0.86;
}

.page-about .about-slice a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.page-about .about-slice a:hover {
  color: var(--cyan-soft);
}

/* ---------- 三条主线 ---------- */
.page-about .about-methods {
  list-style: none;
  margin: clamp(22px, 3.6vw, 36px) 0 clamp(18px, 3vw, 28px);
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-method {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: clamp(18px, 3vw, 26px);
  background: var(--ink);
  border: 2px solid var(--grid);
  transition: border-color var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.page-about .about-method:hover {
  border-color: var(--cyan-30);
  box-shadow: var(--shadow-soft);
}

.page-about .about-method__no {
  margin: 0;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .about-method__main {
  min-width: 0;
}

.page-about .about-method__main h4 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 1.9vw, 20px);
  letter-spacing: 0.01em;
  color: var(--chalk);
}

.page-about .about-method__main p {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.88;
  color: var(--chalk);
  opacity: 0.82;
}

/* ---------- 轴内图片停顿 ---------- */
.page-about .about-plate {
  position: relative;
  margin: 0 0 0 clamp(10px, 2.4vw, 24px);
  padding: 0 0 var(--about-gap) var(--about-indent);
  border-left: 2px solid var(--grid);
}

.page-about .about-plate .figure__media {
  aspect-ratio: 12 / 7;
  overflow: hidden;
  border: 2px solid var(--grid);
}

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

.page-about .about-plate .figure__caption {
  padding-top: 12px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  opacity: 0.72;
}

/* ---------- 破格数字 ---------- */
.page-about .about-breakout {
  display: flex;
  align-items: baseline;
  gap: clamp(8px, 1.6vw, 16px);
  margin: clamp(16px, 3vw, 30px) 0 clamp(18px, 3vw, 30px);
}

.page-about .about-breakout__num {
  display: inline-block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(54px, 12.5vw, 128px);
  line-height: 0.86;
  letter-spacing: -0.035em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-about .about-breakout__unit {
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.24em;
  color: var(--mist);
}

/* ---------- 呼吸区 ---------- */
.page-about .about-breath {
  position: relative;
  margin-left: clamp(10px, 2.4vw, 24px);
  padding-left: var(--about-indent);
  border-left: 2px solid var(--grid);
  min-height: clamp(84px, 11vw, 168px);
  display: flex;
  align-items: center;
}

.page-about .about-breath__ruler {
  display: block;
  width: 100%;
  max-width: 520px;
  height: 14px;
  background-image: repeating-linear-gradient(
    to right,
    var(--grid-soft) 0 1px,
    transparent 1px 32px
  );
  border-bottom: 1px solid var(--grid-faint);
}

/* ---------- 校对流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: 10px;
  margin: clamp(20px, 3.4vw, 34px) 0 clamp(20px, 3.4vw, 32px);
}

.page-about .about-flow .index-group {
  background: var(--ink);
  border: 2px solid var(--grid);
  transition: border-color var(--t-base) var(--ease);
}

.page-about .about-flow .index-group[open] {
  border-color: var(--cyan-30);
}

.page-about .about-flow .index-group__body p {
  margin: 0;
  max-width: 60ch;
}

.page-about .about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(16px, 2.6vw, 24px);
}

/* ---------- 团队与联络 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 36px);
  margin: clamp(20px, 3.4vw, 34px) 0 clamp(20px, 3vw, 30px);
}

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--grid-soft);
}

.page-about .about-role {
  display: flex;
  align-items: baseline;
  gap: 14px;
  background: var(--pitch);
  padding: 14px 16px;
}

.page-about .about-role__num {
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-about .about-role__label {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .about-contact {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--grid-faint);
}

.page-about .about-contact > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid var(--grid-faint);
}

.page-about .about-contact dt {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-about .about-contact dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 14px;
  line-height: 1.7;
  color: var(--chalk);
  word-break: break-word;
}

/* ---------- 尾段通栏 ---------- */
.page-about .about-tail {
  padding: clamp(46px, 7vw, 96px) 0 clamp(50px, 8vw, 108px);
}

.page-about .about-tail .figure__media {
  aspect-ratio: 16 / 7;
  overflow: hidden;
  border: 2px solid var(--grid);
}

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

.page-about .about-tail .figure__caption {
  padding-top: 14px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  opacity: 0.72;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-about .about-method {
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 0 22px;
  }

  .page-about .about-method__no {
    padding-top: 3px;
  }

  .page-about .about-contact > div {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 5.4fr) minmax(0, 4.6fr);
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
  }

  .page-about .about-plate .figure__caption,
  .page-about .about-tail .figure__caption {
    max-width: 70ch;
  }
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 720px) {
  .page-about .about-axis {
    padding-left: 0;
  }

  .page-about .about-slice,
  .page-about .about-plate,
  .page-about .about-breath {
    margin-left: 0;
    padding-left: 30px;
  }

  .page-about .about-slice__era {
    position: static;
    display: block;
    writing-mode: horizontal-tb;
    margin: 0 0 8px;
    letter-spacing: 0.18em;
  }

  .page-about .about-slice__mark {
    left: -8px;
    top: 4px;
  }

  .page-about .about-breath {
    padding-left: 30px;
  }

  .page-about .about-breakout {
    flex-wrap: wrap;
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-slice__mark,
  .page-about .about-method,
  .page-about .about-flow .index-group {
    transition: none;
  }
}