.page-about {
  --about-rail-w: 92px;
  --about-gap: clamp(18px, 3vw, 34px);
  display: block;
  padding-bottom: clamp(40px, 6vw, 84px);
  overflow-x: clip;
}

.page-about .about-crumb {
  padding-top: clamp(18px, 3vw, 32px);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 4vw, 54px) 0 clamp(40px, 6vw, 88px);
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -10% -5% 0 -5%;
  z-index: -1;
  background:
    radial-gradient(58% 66% at 84% 6%, rgba(34, 224, 200, 0.14), transparent 68%),
    radial-gradient(46% 58% at 4% 92%, rgba(255, 59, 78, 0.12), transparent 70%),
    repeating-linear-gradient(90deg, rgba(35, 43, 54, 0.55) 0 1px, transparent 1px var(--mesh));
  pointer-events: none;
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: end;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  color: var(--text);
  letter-spacing: -0.02em;
  margin: 0;
}

.page-about h1 {
  font-size: clamp(34px, 6.4vw, 74px);
  line-height: 1.02;
  font-weight: 700;
  margin: 14px 0 18px;
  max-width: 18ch;
}

.page-about .about-lede {
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.75;
  color: var(--text-soft);
  max-width: 44ch;
  margin: 0 0 24px;
}

.page-about .about-hero-actions {
  gap: 12px;
  flex-wrap: wrap;
}

.page-about .about-hero-note {
  margin: 16px 0 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .about-hero-panel {
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 28px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 16px;
  align-content: start;
}

.page-about .panel-caption {
  grid-column: 1 / -1;
  margin: 0;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .hero-stat {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-about .stat-num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-about .stat-num em {
  font-style: normal;
  font-size: 0.5em;
  margin-left: 2px;
  color: var(--muted);
}

.page-about .stat-num--red {
  color: var(--red);
}

.page-about .stat-num--gold {
  color: var(--gold);
}

.page-about .stat-label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 章节骨架 ---------- */

.page-about .about-chapter {
  padding: clamp(32px, 5vw, 72px) 0;
}

.page-about .chapter-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .chapter-rail {
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-about .chapter-rail .annotation {
  color: var(--gold);
}

.page-about .chapter-body {
  min-width: 0;
}

.page-about .chapter-body h2 {
  font-size: clamp(24px, 3.4vw, 42px);
  line-height: 1.1;
  margin-bottom: 16px;
}

.page-about .chapter-body > p {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--text-soft);
  max-width: 62ch;
  margin: 0 0 16px;
}

/* ---------- 时间线分段 ---------- */

.page-about .about-timeline {
  margin: 26px 0 28px;
}

.page-about .about-timeline .segmented-list {
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.page-about .era-panel {
  border-left: 2px solid var(--red);
  padding: 6px 0 6px 18px;
  background: linear-gradient(90deg, rgba(255, 59, 78, 0.07), transparent 70%);
}

.page-about .era-year {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cyan);
  margin: 0 0 6px;
}

.page-about .era-panel p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

/* ---------- 图片框 ---------- */

.page-about .about-figure {
  margin: 28px 0 0;
}

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

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.page-about .about-figure--inline {
  max-width: 720px;
}

/* ---------- 团队构成 ---------- */

.page-about .team-bar {
  display: flex;
  height: 104px;
  margin: 24px 0 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--ink-2);
}

.page-about .team-seg {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 2px;
  padding: 12px 10px;
  min-width: 0;
  transition: filter 0.25s ease;
}

.page-about .team-seg:hover,
.page-about .team-seg:focus-within {
  filter: brightness(1.2);
}

.page-about .team-seg--data {
  flex: 24;
  background: linear-gradient(180deg, #ff5566, #c22034);
}

.page-about .team-seg--content {
  flex: 18;
  background: linear-gradient(180deg, #46ebd6, #14a894);
}

.page-about .team-seg--product {
  flex: 14;
  background: linear-gradient(180deg, #ffbb4d, #d3850f);
}

.page-about .team-seg--support {
  flex: 12;
  background: linear-gradient(180deg, #c3cfe0, #7a8798);
}

.page-about .seg-num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(18px, 2.8vw, 28px);
  font-weight: 700;
  line-height: 1;
  color: #07090d;
}

.page-about .seg-name {
  font-size: 11px;
  line-height: 1.3;
  color: rgba(7, 9, 13, 0.78);
  letter-spacing: 0.02em;
  overflow-wrap: anywhere;
}

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

.page-about .role-card {
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--accent, var(--line));
  border-radius: var(--radius);
  padding: 18px 20px;
}

.page-about .role-card--data {
  --accent: var(--red);
}

.page-about .role-card--content {
  --accent: var(--cyan);
}

.page-about .role-card--product {
  --accent: var(--gold);
}

.page-about .role-card--support {
  --accent: #93a0b2;
}

.page-about .role-card h3 {
  font-size: 17px;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}

.page-about .role-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ---------- 更新节奏 ---------- */

.page-about .rhythm-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 24px;
}

.page-about .rhythm-item {
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  padding: 18px;
}

.page-about .rhythm-freq {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  margin: 0 0 8px;
}

.page-about .rhythm-item h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.page-about .rhythm-item p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 覆盖范围 ---------- */

.page-about .about-band {
  padding: clamp(36px, 5.5vw, 84px) 0;
  background:
    linear-gradient(180deg, transparent, rgba(18, 22, 29, 0.85) 30%, rgba(18, 22, 29, 0.85) 70%, transparent),
    repeating-linear-gradient(0deg, rgba(35, 43, 54, 0.5) 0 1px, transparent 1px var(--mesh));
}

.page-about .coverage-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
  align-items: start;
}

.page-about .coverage-copy h2 {
  font-size: clamp(24px, 3.4vw, 42px);
  line-height: 1.12;
  margin: 12px 0 18px;
}

.page-about .coverage-copy > p {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--text-soft);
  max-width: 60ch;
  margin: 0 0 16px;
}

.page-about .partner-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 26px;
}

.page-about .partner-group {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  background: rgba(7, 9, 13, 0.55);
}

.page-about .partner-count {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  display: block;
}

.page-about .partner-group h3 {
  font-size: 15px;
  margin: 8px 0 6px;
  color: var(--text);
}

.page-about .partner-group p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .data-slab {
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 26px);
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-about .slab-row {
  display: grid;
  gap: 4px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .slab-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .data-figure {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-about .data-figure em {
  font-style: normal;
  font-size: 0.5em;
  margin-left: 2px;
  color: var(--muted);
}

.page-about .data-figure--red {
  color: var(--red);
}

.page-about .data-figure--gold {
  color: var(--gold);
}

.page-about .slab-label {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* ---------- 地域身份 ---------- */

.page-about .about-chapter--zhuang .identity-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
}

.page-about .identity-copy h2 {
  font-size: clamp(24px, 3.4vw, 42px);
  line-height: 1.12;
  margin-bottom: 16px;
}

.page-about .identity-copy p {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--text-soft);
  margin: 0 0 16px;
  max-width: 58ch;
}

.page-about .identity-figure {
  margin: 0;
}

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

.page-about .zhuang-band {
  grid-column: 1 / -1;
  height: 16px;
  margin-top: 8px;
  border-radius: var(--pill);
  background-image:
    repeating-linear-gradient(45deg, var(--gold) 0 2px, transparent 2px 16px),
    repeating-linear-gradient(-45deg, var(--gold) 0 2px, transparent 2px 16px);
  opacity: 0.42;
}

/* ---------- 成绩与下一步 ---------- */

.page-about .award-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .award-row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .award-row:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-about .award-mark {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.06em;
  padding-top: 2px;
}

.page-about .award-row h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.page-about .award-row p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-soft);
  max-width: 56ch;
}

/* ---------- 结尾入口 ---------- */

.page-about .about-cta {
  padding: clamp(34px, 5vw, 72px) 0 0;
}

.page-about .about-cta-inner {
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 46px);
  display: grid;
  gap: 14px;
}

.page-about .about-cta-inner h2 {
  font-size: clamp(22px, 3vw, 36px);
  line-height: 1.14;
}

.page-about .about-cta-inner p {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  color: var(--text-soft);
  max-width: 62ch;
}

.page-about .about-cta-actions {
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 6px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-hero-panel {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .team-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .rhythm-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .partner-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
  }

  .page-about .about-hero-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 30px;
  }

  .page-about .chapter-grid {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
  }

  .page-about .chapter-rail {
    position: sticky;
    top: 128px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding-top: 6px;
  }

  .page-about .coverage-grid {
    grid-template-columns: minmax(0, 8fr) minmax(260px, 4fr);
  }

  .page-about .about-chapter--zhuang .identity-body {
    grid-template-columns: minmax(0, 1.35fr) minmax(240px, 1fr);
  }

  .page-about .about-chapter--zhuang .chapter-grid {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
  }

  .page-about .about-chapter--zhuang .zhuang-band {
    grid-column: 2;
  }

  .page-about .about-figure--inline {
    margin-top: 30px;
  }
}

@media (min-width: 1180px) {
  .page-about .rhythm-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-hero {
    padding-top: clamp(40px, 4vw, 68px);
  }
}

@media (max-width: 480px) {
  .page-about .team-bar {
    height: 88px;
  }

  .page-about .seg-name {
    font-size: 10px;
  }

  .page-about .award-row {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-seg {
    transition: none;
  }
}