.page-about {
  --about-note-col: 176px;
  --about-hair: rgba(11, 122, 138, 0.22);
  --about-hair-light: rgba(183, 221, 224, 0.24);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  color: var(--cream);
  background:
    radial-gradient(120% 90% at 84% 4%, rgba(11, 122, 138, 0.58) 0%, rgba(11, 122, 138, 0) 58%),
    radial-gradient(88% 74% at 6% 96%, rgba(30, 158, 114, 0.34) 0%, rgba(30, 158, 114, 0) 62%),
    linear-gradient(162deg, var(--ink-night) 0%, var(--ink) 54%, var(--peacock-deep) 100%);
  padding-block: clamp(26px, 5vw, 56px) clamp(32px, 5vw, 68px);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -14%;
  right: -18%;
  width: min(520px, 72vw);
  height: min(520px, 72vw);
  border-radius: 50%;
  background: conic-gradient(from 208deg, rgba(242, 181, 68, 0.26), rgba(242, 181, 68, 0) 38%, rgba(30, 158, 114, 0.3) 68%, rgba(30, 158, 114, 0) 100%);
  filter: blur(8px);
  pointer-events: none;
}

.page-about .about-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-crumbs {
  font-size: 13px;
  color: var(--glass);
}

.page-about .about-crumbs a {
  color: var(--glass);
  text-decoration: none;
  border-bottom: 1px solid rgba(183, 221, 224, 0.4);
}

.page-about .about-crumbs a:hover,
.page-about .about-crumbs a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-about .about-crumbs .crumbs__sep {
  margin-inline: 8px;
  color: rgba(183, 221, 224, 0.6);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-about .about-hero__eyebrow {
  color: var(--gold);
  letter-spacing: 0.18em;
}

.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.9rem, 6.4vw, 3.3rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--cream);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(247, 244, 236, 0.86);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

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

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

.page-about .about-hero__figure .figure__frame {
  background: rgba(183, 221, 224, 0.14);
  border: 1px solid rgba(183, 221, 224, 0.26);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .about-hero__figure .figure__cap {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(247, 244, 236, 0.66);
}

/* ---------- 章节索引 ---------- */
.page-about .about-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: 18px;
  border-top: 1px solid var(--about-hair-light);
}

.page-about .about-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid rgba(183, 221, 224, 0.28);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--glass);
  text-decoration: none;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.page-about .about-toc__link span {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--gold);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  background: rgba(30, 158, 114, 0.28);
  border-color: var(--jade);
  color: #fff;
  transform: translateY(-1px);
}

/* ---------- 主体与章节 ---------- */
.page-about .about-body {
  padding-block: clamp(20px, 4vw, 44px) clamp(48px, 7vw, 96px);
}

.page-about .about-section {
  display: grid;
  gap: 16px;
  padding-block: clamp(36px, 5.5vw, 76px);
  border-top: 1px solid var(--about-hair);
}

.page-about .about-body > .about-section:first-child {
  border-top: 0;
}

.page-about .about-section__num {
  display: block;
  font-family: var(--mono);
  font-size: 26px;
  line-height: 1;
  color: var(--peacock);
}

.page-about .about-section__kicker {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--stone);
}

.page-about .about-section__note p {
  margin: 12px 0 0;
  padding-left: 10px;
  border-left: 2px solid var(--gold);
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

.page-about .about-h2 {
  margin: 0 0 16px;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.4vw, 2.05rem);
  line-height: 1.34;
  color: var(--ink);
}

.page-about .about-lead {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .about-section__body p {
  max-width: 62ch;
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--stone);
}

.page-about .about-inline-link {
  color: var(--peacock-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--peacock);
  font-weight: 500;
}

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

/* ---------- 羽片分隔线 ---------- */
.page-about .about-divider {
  display: block;
  width: 100%;
  max-width: 240px;
  height: 24px;
  margin: 0 auto;
  color: var(--moss);
  opacity: 0.7;
}

/* ---------- 色卡 ---------- */
.page-about .about-swatches {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-swatch {
  display: grid;
  gap: 6px;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-md);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.page-about .about-swatch:hover {
  transform: translateY(-3px);
  border-color: var(--peacock);
  box-shadow: 0 14px 28px rgba(21, 26, 51, 0.12);
}

.page-about .about-swatch__chip {
  display: block;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--chip, var(--peacock));
}

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

.page-about .about-swatch__use {
  font-size: 12px;
  line-height: 1.6;
  color: var(--stone);
}

/* ---------- 三根支柱 ---------- */
.page-about .about-pillars {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-about .about-pillar {
  padding: 20px 18px;
  background: var(--cream);
  border-left: 4px solid var(--peacock);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.page-about .about-pillar:nth-child(2) {
  border-left-color: var(--jade);
}

.page-about .about-pillar:nth-child(3) {
  border-left-color: var(--gold);
}

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

.page-about .about-pillar__title {
  margin: 8px 0 8px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 16px;
  color: var(--ink);
}

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

/* ---------- 玻璃注释与引文 ---------- */
.page-about .about-glass {
  margin-top: 22px;
  padding: 16px 18px;
  background: rgba(183, 221, 224, 0.22);
  border: 1px solid rgba(11, 122, 138, 0.18);
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.8;
  color: var(--peacock-deep);
}

.page-about .about-quote {
  margin: 26px 0 0;
  padding: 18px 22px;
  background: var(--cream-2);
  border-left: 4px solid var(--gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 图组 ---------- */
.page-about .about-figure {
  margin: 24px 0;
}

.page-about .about-figure .figure__frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(183, 221, 224, 0.2);
}

.page-about .about-figure .figure__cap {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 22px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 9px;
  width: 2px;
  background: linear-gradient(180deg, var(--peacock) 0%, var(--jade) 58%, var(--moss) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 34px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--cream);
  border: 3px solid var(--peacock);
}

.page-about .about-timeline__year {
  font-family: var(--mono);
  font-size: 18px;
  color: var(--peacock-deep);
}

.page-about .about-timeline__title {
  margin: 6px 0 6px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 16px;
  color: var(--ink);
}

.page-about .about-timeline__text {
  margin: 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- 数据条 ---------- */
.page-about .about-stats {
  display: grid;
  gap: 12px;
  margin: 24px 0;
}

.page-about .about-stat {
  padding: 18px;
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, rgba(183, 221, 224, 0.38) 0%, rgba(247, 244, 236, 0.92) 100%);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--mono);
  font-size: 22px;
  color: var(--peacock-deep);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 设备场景 ---------- */
.page-about .about-scenes {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-about .about-scene {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: var(--cream-2);
  border-top: 3px solid var(--jade);
  border-radius: var(--radius-md);
}

.page-about .about-scene:nth-child(2) {
  border-top-color: var(--peacock);
}

.page-about .about-scene:nth-child(3) {
  border-top-color: var(--gold);
}

.page-about .about-scene__tag {
  align-self: flex-start;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(11, 122, 138, 0.12);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--peacock-deep);
}

.page-about .about-scene__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
}

.page-about .about-scene ul {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--stone);
}

.page-about .about-scene li::marker {
  color: var(--jade);
}

/* ---------- 收口 ---------- */
.page-about .about-cta {
  display: grid;
  gap: 16px;
  margin-top: clamp(36px, 6vw, 72px);
  padding: clamp(24px, 4vw, 40px);
  border-radius: var(--radius-lg);
  color: var(--cream);
  background:
    radial-gradient(110% 120% at 92% 0%, rgba(30, 158, 114, 0.4) 0%, rgba(30, 158, 114, 0) 60%),
    linear-gradient(145deg, var(--ink) 0%, var(--peacock-deep) 100%);
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.25rem, 3.4vw, 1.65rem);
  line-height: 1.4;
  color: var(--cream);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(247, 244, 236, 0.84);
}

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

/* ---------- 滚动显现 ---------- */
.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: calc(var(--i, 0) * 80ms);
}

.page-about [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 760px) {
  .page-about .about-pillars {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.82fr);
  }

  .page-about .about-section {
    grid-template-columns: var(--about-note-col) minmax(0, 1fr);
    gap: clamp(28px, 4.5vw, 64px);
  }

  .page-about .about-section__note {
    position: sticky;
    top: 24px;
    align-self: start;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__figure {
    transform: translateY(6px);
  }

  .page-about .about-figure {
    margin-inline: -2% 4%;
  }
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: opacity 0.2s linear;
  }

  .page-about .about-toc__link,
  .page-about .about-swatch {
    transition: none;
  }

  .page-about .about-toc__link:hover,
  .page-about .about-toc__link:focus-visible,
  .page-about .about-swatch:hover {
    transform: none;
  }
}

.page-about {
  --chip: transparent;
  --i: 0.3s;
}