.page-about {
  --about-panel-line: var(--edge);
  position: relative;
  padding-bottom: clamp(48px, 8vw, 96px);
  scroll-behavior: smooth;
}

.page-about .about-topbar {
  padding-top: clamp(18px, 3vw, 28px);
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  position: relative;
  margin-top: clamp(14px, 2.5vw, 26px);
  padding: clamp(24px, 4vw, 52px);
  border: 1px solid var(--edge);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(34, 230, 211, 0.14), transparent 58%),
    radial-gradient(90% 80% at 0% 100%, rgba(245, 184, 65, 0.08), transparent 60%),
    linear-gradient(160deg, var(--panel), var(--ink) 68%);
  box-shadow: var(--shadow-panel);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 12px;
  background-image: repeating-linear-gradient(90deg, var(--edge) 0 1px, transparent 1px 15px);
  opacity: 0.85;
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(22px, 3vw, 38px);
  align-items: start;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 5.4vw, 70px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-hero__intro {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__panel {
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  background: rgba(6, 19, 26, 0.55);
  padding: 4px 18px;
}

.page-about .about-hero__stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--edge);
}

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

.page-about .about-hero__stat-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-about .about-hero__stat-value {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--cyan);
}

.page-about .about-hero__stat-value--amber {
  color: var(--amber);
}

/* ---------- 主体：侧栏索引 + 章节 ---------- */
.page-about .about-body {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(34px, 6vw, 68px);
}

.page-about .about-rail__inner {
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  padding: 18px 16px;
  background: linear-gradient(180deg, rgba(13, 38, 36, 0.92), rgba(7, 28, 24, 0.55));
}

.page-about .about-rail__label {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--edge);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-rail__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--mist);
  font-size: 13.5px;
  line-height: 1.5;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--paper);
  background: rgba(34, 230, 211, 0.09);
  border-left-color: var(--cyan);
}

.page-about .about-rail__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-rail__note {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--edge);
}

.page-about .about-rail__note p {
  margin: 8px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

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

/* ---------- 章节 ---------- */
.page-about .about-chapter {
  padding-top: clamp(24px, 4vw, 42px);
  border-top: 1px solid var(--edge);
  scroll-margin-top: 24px;
}

.page-about .about-chapter:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .about-chapter + .about-chapter {
  margin-top: clamp(28px, 4vw, 52px);
}

.page-about .about-chapter__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-about .about-chapter__num {
  padding: 2px 9px;
  border: 1px solid var(--edge);
  border-radius: var(--radius-pill);
  color: var(--cyan);
}

.page-about .about-chapter__year {
  color: var(--amber);
}

.page-about .about-chapter h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.3vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.005em;
  color: var(--paper);
}

.page-about .about-chapter__text p {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(242, 247, 244, 0.8);
}

/* ---------- 图文 ---------- */
.page-about .about-figure {
  margin: 22px 0 0;
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--panel);
}

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

.page-about .about-figure figcaption {
  padding: 10px 16px;
  border-top: 1px solid var(--edge);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--mist);
}

/* ---------- 数据卡 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-stat {
  padding: 16px 14px;
  border: 1px solid var(--edge);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(13, 38, 36, 0.95), rgba(7, 28, 24, 0.7));
}

.page-about .about-stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 700;
  line-height: 1.15;
  color: var(--cyan);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--mist);
}

/* ---------- 索引层 ---------- */
.page-about .about-layers {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--edge);
}

.page-about .about-layers li {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--edge);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(242, 247, 244, 0.78);
}

.page-about .about-layers__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
  padding-top: 2px;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 24px;
  margin-top: 24px;
}

.page-about .about-team__chart svg {
  display: block;
  width: min(100%, 250px);
  height: auto;
  margin: 0 auto;
}

.page-about .ring {
  fill: none;
  stroke-width: 18;
}

.page-about .ring--track {
  stroke: var(--edge);
}

.page-about .ring--editors {
  stroke: var(--cyan);
}

.page-about .ring--data {
  stroke: var(--amber);
}

.page-about .ring--product {
  stroke: var(--mist);
}

.page-about .ring--support {
  stroke: var(--cyan-soft);
}

.page-about .ring__num {
  fill: var(--paper);
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
}

.page-about .ring__cap {
  fill: var(--mist);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.page-about .about-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-team__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 13px 14px;
  border: 1px solid var(--edge);
  border-radius: var(--radius-md);
  background: rgba(13, 38, 36, 0.55);
}

.page-about .about-team__dot {
  width: 10px;
  height: 10px;
  margin-top: 6px;
  border-radius: 50%;
}

.page-about .about-team__dot--editors {
  background: var(--cyan);
}

.page-about .about-team__dot--data {
  background: var(--amber);
}

.page-about .about-team__dot--product {
  background: var(--mist);
}

.page-about .about-team__dot--support {
  background: var(--cyan-soft);
}

.page-about .about-team__name {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .about-team__desc {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 版本日志 ---------- */
.page-about .about-log {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-log li {
  padding: 16px 18px;
  border: 1px solid var(--edge);
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, rgba(13, 38, 36, 0.9), rgba(6, 19, 26, 0.6));
}

.page-about .about-log__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.page-about .about-log__ver {
  padding: 2px 10px;
  border: 1px solid var(--edge);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

.page-about .about-log p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(242, 247, 244, 0.76);
}

.page-about .about-quality {
  margin: 18px 0 0;
  padding: 6px 0 6px 16px;
  border-left: 2px solid var(--amber);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 合作生态 ---------- */
.page-about .about-band {
  position: relative;
  margin: 22px 0 0;
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .about-band img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-band figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 16px 18px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  color: var(--mist);
  background: linear-gradient(180deg, transparent, rgba(6, 19, 26, 0.92));
}

.page-about .about-partners {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.page-about .about-partner {
  position: relative;
  padding: 20px 18px;
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(13, 38, 36, 0.95), rgba(6, 19, 26, 0.75));
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .about-partner:hover,
.page-about .about-partner:focus,
.page-about .about-partner:focus-within {
  border-color: var(--cyan);
  transform: translateY(-2px);
  box-shadow: 0 18px 40px -30px rgba(34, 230, 211, 0.9);
  outline: none;
}

.page-about .about-partner__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}

.page-about .about-partner__title {
  display: block;
  margin-top: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .about-partner__more {
  margin: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--mist);
  transition: max-height 0.35s var(--ease), opacity 0.35s var(--ease), margin 0.35s var(--ease);
}

.page-about .about-partner:hover .about-partner__more,
.page-about .about-partner:focus .about-partner__more,
.page-about .about-partner:focus-within .about-partner__more {
  max-height: 220px;
  margin-top: 10px;
  opacity: 1;
}

.page-about .about-honors {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-about .about-honor {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--edge);
  border-radius: var(--radius-pill);
  background: rgba(245, 184, 65, 0.07);
  font-size: 13px;
  color: rgba(242, 247, 244, 0.85);
}

.page-about .about-honor span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

/* ---------- 联系 ---------- */
.page-about .about-contact {
  display: grid;
  gap: 20px;
  margin-top: 22px;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--edge);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(13, 38, 36, 0.95), rgba(6, 19, 26, 0.8));
}

.page-about .about-contact__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-about .about-contact__key--spaced {
  margin-top: 14px;
}

.page-about .about-contact__val {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
  overflow-wrap: anywhere;
}

/* ---------- 相关入口 ---------- */
.page-about .about-next {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(30px, 5vw, 52px);
  padding-top: 20px;
  border-top: 1px solid var(--edge);
}

.page-about .about-next__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--edge);
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  color: var(--night);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about a:focus-visible,
.page-about .about-partner:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: 3px;
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 860px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(240px, 0.85fr);
    gap: clamp(28px, 4vw, 48px);
  }

  .page-about .about-chapter--split .about-chapter__body {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.85fr);
    gap: clamp(20px, 3vw, 36px);
    align-items: start;
  }

  .page-about .about-chapter--split .about-figure {
    margin-top: 18px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(200px, 0.75fr) minmax(0, 1.25fr);
    align-items: center;
    gap: 28px;
  }

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

  .page-about .about-contact {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-about .about-body {
    grid-template-columns: 226px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

  .page-about .about-rail__inner {
    position: sticky;
    top: 28px;
  }

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

/* ---------- 触屏与低动效 ---------- */
@media (hover: none) {
  .page-about .about-partner__more {
    max-height: none;
    margin-top: 10px;
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about {
    scroll-behavior: auto;
  }

  .page-about .about-rail__link,
  .page-about .about-partner,
  .page-about .about-partner__more,
  .page-about .about-next__link {
    transition: none;
  }

  .page-about .about-partner:hover,
  .page-about .about-partner:focus,
  .page-about .about-partner:focus-within {
    transform: none;
  }
}
<<<END>>>