.page-about {
  --about-border: rgba(138, 155, 170, 0.30);
  --about-hard: rgba(2, 8, 16, 0.66);
  --about-ink-soft: rgba(239, 244, 248, 0.80);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about [id] {
  scroll-margin-top: 96px;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  margin-top: clamp(14px, 2.5vw, 24px);
  padding: clamp(30px, 5.4vw, 62px) 0 clamp(36px, 6.2vw, 78px);
  background:
    radial-gradient(120% 100% at 88% -20%, rgba(255, 107, 74, 0.22), transparent 62%),
    radial-gradient(90% 80% at 4% 112%, rgba(47, 230, 200, 0.14), transparent 60%),
    linear-gradient(180deg, var(--ink-deep) 0%, var(--ink) 100%);
  border-top: 2px solid var(--rule-coral);
  border-bottom: 2px solid var(--rule-coral);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(-45deg, rgba(138, 155, 170, 0.07) 0 1px, transparent 1px 16px);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-hero__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--coral);
  padding-left: 46px;
  position: relative;
}

.page-about .about-hero__index::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 34px;
  height: 2px;
  background: var(--coral);
}

.page-about .about-hero__title {
  margin: clamp(14px, 2vw, 22px) 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 6.4vw, 66px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--mist);
  max-width: 16em;
}

.page-about .about-hero__lead {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 62ch;
  font-size: clamp(16px, 1.9vw, 18px);
  line-height: 1.78;
  color: var(--about-ink-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

/* 首屏目录面板 */
.page-about .about-hero__panel {
  border: 2px solid var(--rule-soft);
  background: rgba(14, 51, 64, 0.62);
  box-shadow: 8px 8px 0 var(--about-hard);
  padding: clamp(18px, 3vw, 26px);
}

.page-about .about-toc__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

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

.page-about .about-toc__link {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px dashed var(--about-border);
  text-decoration: none;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.6;
  transition: color 0.24s var(--ease), padding-left 0.24s var(--ease);
}

.page-about .about-toc li:last-child .about-toc__link {
  border-bottom: 0;
}

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

.page-about .about-toc__n {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel);
}

/* ---------- 长文阅读排版 ---------- */
.page-about .about-view {
  padding: clamp(46px, 7vw, 96px) 0;
  background: var(--ink);
}

.page-about .about-read {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

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

.page-about .about-read__index {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-read__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1;
  color: var(--coral);
}

.page-about .about-read__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--steel);
}

.page-about .about-h2 {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--mist);
}

.page-about .prose p {
  margin: 0 0 1.15em;
  font-size: clamp(15.5px, 1.75vw, 17px);
  line-height: 1.82;
  color: var(--about-ink-soft);
}

.page-about .prose p:last-child {
  margin-bottom: 0;
}

.page-about .about-read__side {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.page-about .about-sidecard {
  border: 2px solid var(--rule-cyan);
  border-left: 6px solid var(--cyan);
  background: rgba(14, 51, 64, 0.55);
  padding: clamp(16px, 2.4vw, 22px);
}

.page-about .about-sidecard--flat {
  border-color: var(--about-border);
  border-left-color: var(--coral);
  background: rgba(7, 19, 34, 0.5);
}

.page-about .about-sidecard__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-sidecard--flat .about-sidecard__label {
  color: var(--coral);
}

.page-about .about-sidecard p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--rule-cyan);
  transition: border-color 0.24s var(--ease), color 0.24s var(--ease);
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

/* ---------- 编辑部 ---------- */
.page-about .about-newsroom {
  padding: clamp(46px, 7vw, 98px) 0;
  background:
    linear-gradient(180deg, rgba(14, 51, 64, 0.94) 0%, rgba(14, 51, 64, 0.66) 100%),
    var(--ink-2);
  border-top: 2px solid var(--rule-soft);
  border-bottom: 2px solid var(--rule-soft);
}

.page-about .about-figure {
  margin: 0;
  border: 2px solid var(--about-border);
  background: var(--ink-deep);
  box-shadow: 8px 8px 0 var(--about-hard);
  overflow: hidden;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-figure--wide img {
  aspect-ratio: 12 / 5;
}

.page-about .about-figure figcaption {
  padding: 11px 15px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--steel);
  border-top: 1px dashed var(--about-border);
}

.page-about .about-figure--lead {
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .about-roles {
  display: grid;
  gap: clamp(16px, 2.6vw, 26px);
}

.page-about .about-role {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  border: 2px solid var(--about-border);
  background: rgba(10, 27, 46, 0.92);
  box-shadow: 6px 6px 0 var(--about-hard);
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.page-about .about-role:hover {
  transform: translate(-3px, -3px);
  border-color: var(--coral);
  box-shadow: 10px 10px 0 rgba(255, 107, 74, 0.26);
}

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

.page-about .about-role__title {
  margin: 10px 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.2;
  color: var(--mist);
}

.page-about .about-role__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

/* ---------- 建档准则 ---------- */
.page-about .about-archive {
  padding: clamp(46px, 7vw, 98px) 0;
  border-bottom: 2px solid var(--rule-soft);
  background:
    linear-gradient(140deg, rgba(122, 36, 54, 0.86) 0%, rgba(122, 36, 54, 0.34) 46%, rgba(10, 27, 46, 0.96) 100%),
    var(--ink);
}

.page-about .about-archive__grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

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

.page-about .about-figures {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-figure-item {
  padding: clamp(14px, 2vw, 20px);
  border: 2px solid var(--about-border);
  border-left: 5px solid var(--cyan);
  background: rgba(7, 19, 34, 0.62);
}

.page-about .about-figure__v {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 3.6vw, 38px);
  line-height: 1.05;
  color: var(--cyan);
}

.page-about .about-figure__l {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

.page-about .about-fold {
  margin-top: clamp(22px, 3vw, 32px);
  border: 2px solid var(--about-border);
  background: rgba(7, 19, 34, 0.55);
}

.page-about .about-fold > summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mist);
  transition: color 0.24s var(--ease);
}

.page-about .about-fold > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-fold > summary::before {
  content: "+";
  font-size: 19px;
  line-height: 1;
  color: var(--coral);
}

.page-about .about-fold[open] > summary::before {
  content: "\2212";
}

.page-about .about-fold > summary:hover {
  color: var(--cyan);
}

.page-about .about-fold__body {
  padding: 4px 18px 20px;
  border-top: 1px dashed var(--about-border);
}

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

.page-about .about-dims li {
  display: grid;
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--about-border);
}

.page-about .about-dims li:last-child {
  border-bottom: 0;
}

.page-about .about-dims__k {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--yellow);
}

.page-about .about-dims__v {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--about-ink-soft);
}

/* ---------- 赛季节奏 ---------- */
.page-about .about-rhythm {
  padding: clamp(46px, 7vw, 98px) 0;
  background: var(--ink);
}

.page-about .about-axis {
  display: none;
  width: 100%;
  height: auto;
  margin: clamp(24px, 3.6vw, 38px) 0 0;
}

.page-about .about-timeline {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2.4vw, 22px);
}

.page-about .about-phase {
  position: relative;
  padding: clamp(18px, 2.4vw, 24px) clamp(16px, 2vw, 20px) clamp(20px, 2.6vw, 26px);
  border: 2px solid var(--about-border);
  border-top: 4px solid var(--steel);
  background: linear-gradient(180deg, rgba(14, 51, 64, 0.78) 0%, rgba(10, 27, 46, 0.3) 100%);
  box-shadow: 6px 6px 0 var(--about-hard);
}

.page-about .about-phase--open {
  border-top-color: var(--cyan);
}

.page-about .about-phase--live {
  border-top-color: var(--coral);
}

.page-about .about-phase--window {
  border-top-color: var(--yellow);
}

.page-about .about-phase--final {
  border-top-color: var(--steel);
}

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

.page-about .about-phase__title {
  margin: 9px 0 11px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.2vw, 21px);
  line-height: 1.25;
  color: var(--mist);
}

.page-about .about-phase__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--about-ink-soft);
}

.page-about .about-rhythm__figure {
  margin-top: clamp(28px, 4.4vw, 48px);
}

/* ---------- 地域与联系 ---------- */
.page-about .about-roots {
  padding: clamp(46px, 7vw, 92px) 0;
  border-top: 2px solid var(--rule-coral);
  background:
    linear-gradient(200deg, rgba(59, 47, 115, 0.88) 0%, rgba(59, 47, 115, 0.30) 46%, rgba(10, 27, 46, 0.94) 100%),
    var(--ink);
}

.page-about .about-roots__grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 44px);
}

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

.page-about .about-roots__actions {
  margin-top: clamp(20px, 3vw, 28px);
}

.page-about .about-stamp {
  border: 2px solid rgba(255, 210, 74, 0.48);
  background: rgba(7, 19, 34, 0.66);
  box-shadow: 8px 8px 0 var(--about-hard);
  padding: clamp(16px, 2.6vw, 26px);
}

.page-about .about-stamp__row {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--about-border);
  font-size: 14px;
  line-height: 1.65;
}

.page-about .about-stamp__row--last {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-stamp__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-about .about-stamp__v {
  color: var(--mist);
  overflow-wrap: anywhere;
}

/* ---------- 延伸入口 ---------- */
.page-about .about-next {
  padding: clamp(38px, 5.6vw, 74px) 0;
  background: var(--ink-deep);
  border-top: 3px solid var(--coral);
}

.page-about .about-next__title {
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.15;
  color: var(--mist);
}

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

.page-about .about-next__item {
  display: grid;
  gap: 6px;
  padding: 18px 16px;
  border: 2px solid var(--about-border);
  background: rgba(14, 51, 64, 0.5);
  text-decoration: none;
  transition: transform 0.26s var(--ease), border-color 0.26s var(--ease), background-color 0.26s var(--ease);
}

.page-about .about-next__item:hover,
.page-about .about-next__item:focus-visible {
  transform: translateY(-3px);
  border-color: var(--cyan);
  background: rgba(14, 51, 64, 0.86);
}

.page-about .about-next__n {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--coral);
}

.page-about .about-next__label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  color: var(--mist);
}

.page-about .about-next__hint {
  font-size: 13.5px;
  color: var(--steel);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-role:nth-child(2),
  .page-about .about-role:nth-child(4) {
    margin-top: clamp(22px, 3vw, 42px);
  }

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

  .page-about .about-axis {
    display: block;
  }

  .page-about .about-timeline {
    margin-top: 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-archive__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.06fr);
    align-items: start;
  }

  .page-about .about-archive__figure {
    margin-top: clamp(22px, 3.2vw, 48px);
  }

  .page-about .about-roots__grid {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.88fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.72fr) minmax(288px, 0.86fr);
    align-items: start;
  }

  .page-about .about-hero__panel {
    margin-top: clamp(18px, 2.6vw, 40px);
  }
}

@media (min-width: 1000px) {
  .page-about .about-read {
    grid-template-columns: 86px minmax(0, 1.6fr) minmax(258px, 0.84fr);
    align-items: start;
  }

  .page-about .about-read__index {
    position: sticky;
    top: 104px;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-next__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-toc__link,
  .page-about .about-next__item,
  .page-about .about-inline-link {
    transition: none;
  }

  .page-about .about-role:hover,
  .page-about .about-next__item:hover,
  .page-about .about-next__item:focus-visible {
    transform: none;
  }
}