.page-about {
  --about-accent-bg: rgba(255, 107, 53, 0.08);
  --about-green-bg: rgba(57, 255, 20, 0.07);
  --about-card-border: rgba(176, 190, 197, 0.16);
}

/* ========== 品牌档案头部 ========== */
.page-about .about-hero {
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-base) 100%);
  border-bottom: 1px solid var(--line-strong);
  padding: 40px 0 48px;
}

.page-about .about-hero-inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-top: 28px;
}

.page-about .about-hero-copy {
  flex: 1;
}

.page-about .about-hero-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--neon);
  text-transform: uppercase;
  margin: 0 0 16px;
}

.page-about .about-title {
  font-family: var(--font-display);
  font-size: 42px;
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: 0.01em;
  margin: 0 0 20px;
  color: var(--text-main);
}

.page-about .about-title-accent {
  display: block;
  color: var(--accent);
}

.page-about .about-hero-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 620px;
  margin-bottom: 28px;
}

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

.page-about .about-hero-visual {
  position: relative;
  width: 100%;
  max-width: 360px;
}

.page-about .about-hero-badge {
  position: absolute;
  top: -12px;
  right: 12px;
  background: var(--accent);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 5px 12px;
  box-shadow: var(--shadow-1);
  z-index: 2;
}

.page-about .about-hero-img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--line-strong);
  object-fit: cover;
}

/* ========== 01 品牌定位与使命 ========== */
.page-about .about-mission {
  background: var(--bg-base);
  border-bottom: 1px solid var(--line-strong);
  padding: 56px 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-mission::before {
  content: "01";
  position: absolute;
  right: -10px;
  top: 20px;
  font-family: var(--font-display);
  font-size: 120px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(176, 190, 197, 0.14);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-mission-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-top: 36px;
  position: relative;
  z-index: 1;
}

.page-about .about-mission-copy .lead {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-main);
  border-left: 3px solid var(--accent);
  padding-left: 16px;
  margin-bottom: 20px;
}

.page-about .about-mission-copy p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0 0 16px;
}

.page-about .about-mission-features {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .about-mission-features li {
  position: relative;
  padding: 10px 14px 10px 40px;
  background: var(--about-accent-bg);
  border: 1px solid var(--line-faint);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-main);
  letter-spacing: 0.02em;
}

.page-about .about-mission-features li::before {
  content: "◆";
  position: absolute;
  left: 16px;
  top: 9px;
  color: var(--accent);
  font-size: 10px;
}

.page-about .about-mission-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.page-about .about-mstat {
  background: var(--bg-card);
  border: 1px solid var(--line-faint);
  padding: 18px 16px;
  box-shadow: var(--shadow-1);
}

.page-about .about-mstat:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-2);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .about-mstat .stat-value {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--accent);
  display: block;
  line-height: 1.1;
}

.page-about .about-mstat .stat-label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 8px;
  line-height: 1.45;
}

.page-about .about-mstat-unit {
  font-size: 15px;
  color: var(--accent-soft);
  margin-left: 2px;
}

/* ========== 02 发展里程碑 ========== */
.page-about .about-journey {
  background: var(--bg-deep);
  border-bottom: 1px solid var(--line-strong);
  padding: 56px 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-journey::before {
  content: "02";
  position: absolute;
  left: -10px;
  top: 20px;
  font-family: var(--font-display);
  font-size: 120px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(176, 190, 197, 0.12);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-timeline {
  position: relative;
  margin-top: 36px;
  padding-left: 28px;
  max-width: 860px;
  z-index: 1;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--neon), var(--line-strong) 55%, var(--accent-soft));
}

.page-about .about-timeline-item {
  position: relative;
  padding-bottom: 40px;
}

.page-about .about-timeline-item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline-dot {
  position: absolute;
  left: -24px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 2px solid var(--neon);
  box-sizing: border-box;
}

.page-about .about-timeline-item[data-live] .about-timeline-dot {
  background: var(--neon);
  box-shadow: 0 0 14px rgba(57, 255, 20, 0.6);
}

.page-about .about-timeline-year {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--neon);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.page-about .about-timeline-body {
  background: var(--bg-card);
  border: 1px solid var(--line-faint);
  padding: 16px 18px;
  box-shadow: var(--shadow-1);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .about-timeline-body:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-2);
}

.page-about .about-timeline-item[data-live] .about-timeline-body {
  border-color: rgba(57, 255, 20, 0.4);
}

.page-about .about-timeline-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  font-family: var(--font-body);
  margin: 0 0 8px;
}

.page-about .about-timeline-desc {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin: 0;
}

/* ========== 03 数据服务能力 ========== */
.page-about .about-capability {
  background: var(--bg-base);
  border-bottom: 1px solid var(--line-strong);
  padding: 56px 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-capability::before {
  content: "03";
  position: absolute;
  right: -10px;
  top: 20px;
  font-family: var(--font-display);
  font-size: 120px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(176, 190, 197, 0.12);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-capability-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 36px;
  position: relative;
  z-index: 1;
}

.page-about .about-capability-main {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .about-capability-media {
  border: 1px solid var(--line-strong);
  overflow: hidden;
}

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

.page-about .about-capability-globe {
  background: var(--about-green-bg);
  border: 1px solid var(--line-faint);
  padding: 16px 18px;
}

.page-about .about-capability-globe-title {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--neon);
  text-transform: uppercase;
  margin: 0 0 8px;
}

.page-about .about-capability-globe p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin: 0;
}

.page-about .about-capability-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-capability-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--line-faint);
  padding: 16px 18px;
  box-shadow: var(--shadow-1);
}

.page-about .about-capability-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-2);
}

.page-about .about-capability-card .panel-card-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  font-weight: 700;
  line-height: 1.4;
  flex-shrink: 0;
}

.page-about .about-capability-card .panel-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 6px;
}

.page-about .about-capability-card .panel-card-desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

/* ========== 04 资质与生态 ========== */
.page-about .about-credential {
  background: var(--bg-deep);
  border-bottom: 1px solid var(--line-strong);
  padding: 56px 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-credential::before {
  content: "04";
  position: absolute;
  left: -10px;
  top: 20px;
  font-family: var(--font-display);
  font-size: 120px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(176, 190, 197, 0.12);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-credential-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-top: 36px;
  position: relative;
  z-index: 1;
}

.page-about .about-credential-sec {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-about .about-credential-badge-wrap {
  width: 100%;
  max-width: 260px;
}

.page-about .about-credential-badge {
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  padding: 12px;
  box-shadow: var(--shadow-1);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .about-credential-badge:hover {
  border-color: var(--neon);
  box-shadow: var(--shadow-2);
}

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

.page-about .about-credential-badge-caption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin: 12px 0 0;
}

.page-about .about-credential-sec-copy h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  margin: 0 0 18px;
}

.page-about .about-cert-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-cert-item {
  background: var(--bg-card);
  border-left: 3px solid var(--neon);
  box-shadow: var(--shadow-1);
  padding: 14px 16px;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .about-cert-item:hover {
  border-left-color: var(--accent);
  background: var(--bg-elevated);
}

.page-about .about-cert-name {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.page-about .about-cert-desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.page-about .about-credential-team {
  background: var(--bg-card);
  border: 1px solid var(--line-faint);
  padding: 24px 22px;
  box-shadow: var(--shadow-1);
}

.page-about .about-credential-team h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  margin: 0 0 14px;
}

.page-about .about-credential-team p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.page-about .about-team-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}

.page-about .about-team-list li {
  position: relative;
  padding: 8px 0 8px 22px;
  border-bottom: 1px solid var(--line-faint);
  font-size: 14px;
  color: var(--text-main);
}

.page-about .about-team-list li:last-child {
  border-bottom: none;
}

.page-about .about-team-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 6px;
  background: var(--accent);
}

/* ========== 品牌信任声明 ========== */
.page-about .about-trust {
  background: var(--bg-card);
  border-bottom: 1px solid var(--line-strong);
  padding: 40px 0;
}

.page-about .about-trust-inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
  border-left: 4px solid var(--accent);
  padding-left: 20px;
}

.page-about .about-trust-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--neon);
  text-transform: uppercase;
  margin: 0 0 10px;
}

.page-about .about-trust-text {
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-main);
  max-width: 640px;
  margin: 0;
}

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

/* ========== 桌面端增强 ========== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 56px 0 64px;
  }

  .page-about .about-hero-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    margin-top: 36px;
  }

  .page-about .about-title {
    font-size: 56px;
  }

  .page-about .about-hero-desc {
    font-size: 17px;
  }

  .page-about .about-hero-visual {
    flex: 0 0 360px;
  }

  .page-about .about-mission {
    padding: 80px 0;
  }

  .page-about .about-mission-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 56px;
    margin-top: 48px;
  }

  .page-about .about-mission-features {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-journey {
    padding: 80px 0;
  }

  .page-about .about-timeline {
    margin-top: 48px;
    padding-left: 40px;
    margin-left: auto;
    margin-right: auto;
  }

  .page-about .about-timeline::before {
    left: 12px;
  }

  .page-about .about-timeline-dot {
    left: -32px;
    width: 18px;
    height: 18px;
  }

  .page-about .about-timeline-year {
    font-size: 15px;
  }

  .page-about .about-timeline-body {
    padding: 20px 24px;
  }

  .page-about .about-capability {
    padding: 80px 0;
  }

  .page-about .about-capability-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 24px;
    align-items: stretch;
  }

  .page-about .about-credential {
    padding: 80px 0;
  }

  .page-about .about-credential-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
  }

  .page-about .about-trust {
    padding: 52px 0;
  }

  .page-about .about-trust-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

  .page-about .about-trust-copy {
    flex: 1;
  }
}