.page-about {
  --about-rule: rgba(215, 227, 238, 0.14);
}

/* 面包屑 */
.page-about .breadcrumb {
  padding: 22px 0 0;
}
.page-about .breadcrumb-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0;
  font-size: 13px;
  color: var(--mist);
}
.page-about .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(169, 188, 210, 0.5);
}
.page-about .breadcrumb-list a {
  color: var(--mist);
  text-decoration: none;
}
.page-about .breadcrumb-list a:hover,
.page-about .breadcrumb-list a:focus-visible {
  color: var(--cyan);
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  padding: 40px 0 32px;
  overflow: hidden;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -40px;
  width: 62%;
  height: 180%;
  background: radial-gradient(60% 50% at 100% 0%, rgba(46, 216, 198, 0.16), rgba(46, 216, 198, 0) 68%);
  pointer-events: none;
}
.page-about .about-hero .wrap {
  position: relative;
  z-index: 1;
}
.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.22;
  letter-spacing: 0.02em;
  margin: 12px 0 0;
  color: var(--paper);
}
.page-about .about-hero .lede {
  max-width: 660px;
  margin: 18px 0 0;
  color: var(--mist);
}

/* 锚点导航 */
.page-about .about-anchor-nav {
  margin-top: 30px;
}
.page-about .about-anchor-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.page-about .about-anchor-nav a {
  display: inline-block;
  padding: 7px 15px;
  border: 1px solid var(--line-hair);
  border-radius: var(--radius-pill);
  background: rgba(15, 39, 64, 0.55);
  font-family: var(--font-narrow);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mist);
  text-decoration: none;
  transition: color 180ms var(--ease-signal), background 180ms var(--ease-signal), border-color 180ms var(--ease-signal);
}
.page-about .about-anchor-nav a:hover,
.page-about .about-anchor-nav a:focus-visible {
  color: var(--on-cyan);
  background: var(--cyan);
  border-color: var(--cyan);
  outline: none;
}

/* 通用章节 */
.page-about .about-section {
  position: relative;
  padding: 46px 0;
}
.page-about .about-section + .about-section {
  border-top: 1px solid var(--line-soft);
}
.page-about .section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.3;
  letter-spacing: 0.02em;
  margin: 10px 0 0;
  color: var(--paper);
}
.page-about .about-section p {
  color: var(--mist);
  margin: 14px 0 0;
}

/* 品牌由来 */
.page-about .origin-side {
  align-self: start;
}
.page-about .origin-note {
  padding: 22px 20px;
  border-radius: var(--radius-m);
  border-color: rgba(46, 216, 198, 0.32);
  background: linear-gradient(160deg, rgba(46, 216, 198, 0.12), rgba(15, 39, 64, 0.6));
}
.page-about .origin-note-label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  margin: 0;
}
.page-about .origin-note p:last-child {
  margin: 12px 0 0;
  color: var(--paper);
  font-size: 15px;
  line-height: 1.72;
}

/* 团队 */
.page-about .team-layout {
  display: grid;
  gap: 26px;
}
.page-about .team-copy h2 {
  margin-top: 10px;
}
.page-about .team-stat-board {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.page-about .team-stat {
  padding: 18px 16px;
  border: 1px solid var(--line-hair);
  border-radius: var(--radius-m);
  background: var(--ink-800);
  transition: transform 180ms var(--ease-signal), border-color 180ms var(--ease-signal);
}
.page-about .team-stat:hover,
.page-about .team-stat:focus-within {
  transform: translateY(-3px);
  border-color: rgba(46, 216, 198, 0.5);
}
.page-about .team-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 32px;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: 0.02em;
}
.page-about .team-stat-label {
  display: block;
  margin-top: 10px;
  font-family: var(--font-narrow);
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--paper);
}
.page-about .team-stat-hint {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}
.page-about .team-figure {
  margin: 0;
}

/* 维护节奏（纸面分区） */
.page-about .surface-paper {
  background: var(--paper);
  color: var(--ink-700);
}
.page-about .surface-paper .eyebrow {
  color: #0d8c80;
}
.page-about .surface-paper .section-title {
  color: var(--ink-700);
}
.page-about .surface-paper .rhythm-lede {
  color: rgba(22, 50, 79, 0.74);
  max-width: 620px;
}
.page-about .rhythm-list {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
  display: grid;
  gap: 18px;
}
.page-about .rhythm-item {
  padding-top: 16px;
  border-top: 2px solid var(--signal);
}
.page-about .rhythm-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: #0d8c80;
  border: 1px solid rgba(13, 140, 128, 0.35);
  border-radius: var(--radius-pill);
  padding: 3px 10px;
}
.page-about .rhythm-item h3 {
  margin: 12px 0 0;
  font-family: var(--font-narrow);
  font-size: 17px;
  letter-spacing: 0.06em;
  color: var(--ink-700);
}
.page-about .rhythm-item p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.76;
  color: rgba(22, 50, 79, 0.76);
}

/* 时间轴 */
.page-about .timeline {
  position: relative;
  margin-top: 26px;
  padding: 24px 18px;
  border: 1px solid var(--line-hair);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, rgba(15, 39, 64, 0.6), rgba(8, 25, 43, 0.9));
  overflow: hidden;
}
.page-about .timeline-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.14;
  pointer-events: none;
}
.page-about .timeline-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .timeline-list::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 30px;
  bottom: 30px;
  width: 1px;
  background: linear-gradient(180deg, rgba(46, 216, 198, 0), rgba(46, 216, 198, 0.5) 12%, rgba(46, 216, 198, 0.5) 88%, rgba(46, 216, 198, 0));
}
.page-about .timeline-node {
  position: relative;
  padding: 18px 0 18px 30px;
}
.page-about .timeline-node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 5px rgba(46, 216, 198, 0.1);
  z-index: 1;
}
.page-about .timeline-year {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--signal-soft);
}
.page-about .timeline-body h3 {
  margin: 6px 0 0;
  font-family: var(--font-narrow);
  font-size: 17px;
  letter-spacing: 0.06em;
  color: var(--paper);
}
.page-about .timeline-body p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--mist);
}

/* 合作生态 */
.page-about .partner-layout {
  display: grid;
  gap: 26px;
}
.page-about .partner-figure {
  margin: 0;
}
.page-about .partner-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: grid;
  gap: 10px;
}
.page-about .partner-list li {
  padding: 14px 16px;
  border: 1px solid var(--line-hair);
  border-radius: var(--radius-s);
  background: rgba(15, 39, 64, 0.5);
  color: var(--mist);
  font-size: 15px;
  line-height: 1.7;
}
.page-about .partner-list .mono {
  display: inline-block;
  min-width: 26px;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--cyan);
}

/* 认可 */
.page-about .honor-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}
.page-about .honor-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--line-hair);
  border-radius: var(--radius-s);
  background: rgba(15, 39, 64, 0.55);
  color: var(--paper);
  font-size: 15px;
  line-height: 1.65;
}
.page-about .honor-list li::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--signal);
}

/* 结尾行动区 */
.page-about .about-cta {
  padding-bottom: 64px;
}
.page-about .cta-panel {
  display: grid;
  gap: 20px;
  padding: 28px 22px;
  border-radius: var(--radius-m);
  border: 1px solid rgba(46, 216, 198, 0.32);
  background: linear-gradient(135deg, rgba(46, 216, 198, 0.14), rgba(15, 39, 64, 0.75));
}
.page-about .cta-copy h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(20px, 3vw, 26px);
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--paper);
}
.page-about .cta-copy p {
  margin: 12px 0 0;
  color: var(--mist);
}
.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 响应式 */
@media (min-width: 720px) {
  .page-about .about-section {
    padding: 56px 0;
  }
  .page-about .rhythm-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
  .page-about .timeline {
    padding: 28px 30px;
  }
  .page-about .timeline-node {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 26px;
    padding-left: 30px;
  }
  .page-about .timeline-year {
    padding-top: 3px;
  }
}

@media (min-width: 860px) {
  .page-about .team-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 36px;
  }
  .page-about .team-stat-board {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .partner-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: center;
    gap: 42px;
  }
  .page-about .cta-panel {
    grid-template-columns: minmax(0, 7fr) auto;
    align-items: center;
    padding: 32px 34px;
  }
  .page-about .cta-actions {
    flex-wrap: nowrap;
  }
}