.page-about {
  --page-about-deep: var(--sk-primary);
  --page-about-mid: var(--sk-secondary);
  --page-about-ice: var(--sk-ice);
  --page-about-mist: var(--sk-mist);
  --page-about-steel: var(--sk-steel);
  --page-about-orange: var(--sk-accent);
  --page-about-amber: var(--sk-accent-soft);
  --page-about-azure: var(--sk-azure);
  --page-about-serif: var(--sk-serif);
  --page-about-sans: var(--sk-body);
  --page-about-radius: var(--sk-radius);
  background: var(--page-about-ice);
  color: var(--page-about-steel);
  font-family: var(--page-about-sans);
  line-height: 1.8;
  overflow-x: hidden;
}

.page-about .sk-container {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* ===== Hero 首屏 ===== */
.page-about-hero {
  background: linear-gradient(135deg, #0A1A2F 0%, #1E3A5F 100%);
  color: var(--page-about-ice);
  position: relative;
  overflow: hidden;
  padding: 48px 0 84px;
}

.page-about-hero::before {
  content: "";
  position: absolute;
  width: 440px;
  height: 440px;
  right: -140px;
  top: -140px;
  background: radial-gradient(circle, rgba(59,130,246,0.35) 0%, rgba(255,90,31,0.16) 55%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.page-about-hero::after {
  content: "";
  position: absolute;
  left: -5%;
  bottom: -1px;
  width: 110%;
  height: 56px;
  background: var(--page-about-ice);
  transform: skewY(-1.6deg);
  transform-origin: left bottom;
  pointer-events: none;
}

.page-about-hero .sk-container {
  position: relative;
  z-index: 1;
}

.page-about-hero .sk-breadcrumb {
  color: rgba(248,250,252,0.66);
  margin-bottom: 28px;
}

.page-about-hero .sk-breadcrumb a {
  color: rgba(248,250,252,0.82);
  text-decoration: none;
  transition: color 0.25s ease;
}

.page-about-hero .sk-breadcrumb a:hover {
  color: var(--page-about-amber);
}

.page-about-eyebrow {
  color: var(--page-about-amber) !important;
  letter-spacing: 0.1em;
  margin: 0 0 14px;
}

.page-about-hero-title {
  font-family: var(--page-about-serif);
  font-size: clamp(30px, 4.6vw, 60px);
  line-height: 1.22;
  font-weight: 700;
  color: #fff;
  margin: 0 0 22px;
  letter-spacing: 0.02em;
}

.page-about-hero-lead {
  max-width: 640px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(248,250,252,0.82);
  margin: 0 0 38px;
}

.page-about-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.page-about-hero-stat {
  min-width: 128px;
  padding: 14px 22px;
  background: rgba(248,250,252,0.08);
  border: 1px solid rgba(248,250,252,0.16);
  border-radius: var(--page-about-radius);
  display: flex;
  flex-direction: column;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.page-about-hero-stat strong {
  font-size: 28px;
  font-weight: 700;
  color: var(--page-about-amber);
  line-height: 1.2;
}

.page-about-hero-stat span {
  font-size: 13px;
  color: rgba(248,250,252,0.7);
  margin-top: 2px;
}

/* ===== 品牌概述 ===== */
.page-about-overview {
  padding: 84px 0 80px;
}

.page-about-overview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-about-overview-side {
  border-left: 3px solid var(--page-about-orange);
  padding-left: 22px;
}

.page-about-overview-side .sk-eyebrow {
  color: var(--page-about-orange);
  font-weight: 600;
  letter-spacing: 0.14em;
  margin-bottom: 12px;
}

.page-about-manifesto-text {
  font-family: var(--page-about-serif);
  font-size: clamp(30px, 3.6vw, 46px);
  line-height: 1.24;
  font-weight: 700;
  color: var(--page-about-deep);
  margin: 0 0 16px;
}

.page-about-overview-divider {
  width: 52px;
  height: 3px;
  background: linear-gradient(90deg, var(--page-about-orange), var(--page-about-amber));
  margin: 18px 0;
}

.page-about-overview-note {
  font-size: 14px;
  line-height: 1.9;
  color: var(--page-about-steel);
}

.page-about-overview-main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}

.page-about-overview-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-about-overview-content h2 {
  font-family: var(--page-about-serif);
  font-size: 22px;
  line-height: 1.5;
  color: var(--page-about-deep);
  margin: 0 0 16px;
}

.page-about-overview-content p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--page-about-steel);
  margin: 0 0 14px;
}

.page-about-overview-media {
  border-radius: var(--page-about-radius);
  overflow: hidden;
  box-shadow: 0 12px 28px rgba(10,26,47,0.16);
  background: linear-gradient(135deg, rgba(10,26,47,0.08), rgba(255,90,31,0.06));
}

.page-about-img-main {
  display: block;
  width: 100%;
  height: auto;
}

/* ===== 发展里程碑 ===== */
.page-about-milestones {
  background: linear-gradient(135deg, #0A1A2F 0%, #1E3A5F 100%);
  color: var(--page-about-ice);
  position: relative;
  overflow: hidden;
  padding: 72px 0 88px;
}

.page-about-milestones::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  left: -120px;
  bottom: -120px;
  background: radial-gradient(circle, rgba(255,90,31,0.2), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.page-about-milestones::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--page-about-orange), var(--page-about-amber), transparent);
  opacity: 0.8;
  pointer-events: none;
}

.page-about-milestones .sk-container {
  position: relative;
  z-index: 1;
}

.page-about-milestones-head {
  max-width: 720px;
  margin-bottom: 12px;
}

.page-about-milestones-head .sk-eyebrow {
  color: var(--page-about-amber);
  letter-spacing: 0.14em;
  margin-bottom: 12px;
}

.page-about-milestones-head h2 {
  font-family: var(--page-about-serif);
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.3;
  color: #fff;
  margin: 0 0 14px;
}

.page-about-milestones-head p {
  font-size: 15px;
  color: rgba(248,250,252,0.76);
}

.page-about-milestones-banner {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 1;
  object-fit: cover;
  border-radius: 16px;
  margin: 30px 0 36px;
  border: 1px solid rgba(248,250,252,0.14);
}

.page-about-timeline {
  position: relative;
  margin-top: 8px;
  padding-left: 30px;
}

.page-about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(var(--page-about-orange), rgba(255,179,71,0.35));
}

.page-about-timeline-item {
  position: relative;
  padding: 18px 0 26px;
}

.page-about-timeline-item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 28px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--page-about-orange);
  border: 3px solid rgba(255,255,255,0.92);
  box-shadow: 0 0 0 4px rgba(255,90,31,0.3);
  transition: background 0.25s ease, transform 0.25s ease;
}

.page-about-timeline-item:hover::before {
  background: var(--page-about-amber);
  transform: scale(1.15);
}

.page-about-timeline-year {
  display: inline-block;
  font-family: var(--page-about-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--page-about-amber);
  margin-bottom: 6px;
}

.page-about-timeline-item h3 {
  font-family: var(--page-about-serif);
  font-size: 20px;
  line-height: 1.4;
  color: #fff;
  margin: 0 0 8px;
  transition: color 0.25s ease;
}

.page-about-timeline-item:hover h3 {
  color: var(--page-about-amber);
}

.page-about-timeline-item p {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(248,250,252,0.78);
  margin: 0;
  max-width: 100%;
}

/* ===== 团队与数据能力 ===== */
.page-about-team {
  background: var(--page-about-ice);
  padding: 84px 0;
}

.page-about-team-head {
  max-width: 760px;
  margin-bottom: 40px;
}

.page-about-team-head .sk-eyebrow {
  color: var(--page-about-orange);
  letter-spacing: 0.14em;
  margin-bottom: 12px;
}

.page-about-team-head h2 {
  font-family: var(--page-about-serif);
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.32;
  color: var(--page-about-deep);
  margin: 0 0 16px;
}

.page-about-team-head p {
  font-size: 15px;
  color: var(--page-about-steel);
}

.page-about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-about-team-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 18px;
}

.page-about-stat {
  background: #fff;
  border: 1px solid var(--page-about-mist);
  border-radius: var(--page-about-radius);
  padding: 28px 22px;
  box-shadow: 0 4px 14px rgba(10,26,47,0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about-stat:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(10,26,47,0.12);
}

.page-about-stat-num {
  display: block;
  font-family: var(--page-about-serif);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--page-about-orange), var(--page-about-amber));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--page-about-orange);
}

.page-about-stat-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--page-about-deep);
  margin: 12px 0 6px;
}

.page-about-stat p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--page-about-steel);
  margin: 0;
}

.page-about-team-visual {
  align-self: start;
}

.page-about-team-visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--page-about-radius);
  box-shadow: 0 10px 24px rgba(10,26,47,0.14);
}

.page-about-team-caption {
  margin-top: 14px;
  padding: 14px 16px;
  background: #fff;
  border-left: 3px solid var(--page-about-orange);
  border-radius: 0 10px 10px 0;
}

.page-about-team-caption .sk-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--page-about-orange);
  margin-bottom: 4px;
}

.page-about-team-caption p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--page-about-steel);
  margin: 0;
}

/* ===== 行业认可与合作 ===== */
.page-about-honors {
  background: linear-gradient(180deg, var(--page-about-ice) 0%, var(--page-about-mist) 100%);
  padding: 84px 0 72px;
}

.page-about-honors-intro {
  max-width: 720px;
}

.page-about-honors-intro .sk-eyebrow {
  color: var(--page-about-orange);
  letter-spacing: 0.14em;
  margin-bottom: 12px;
}

.page-about-honors-intro h2 {
  font-family: var(--page-about-serif);
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.3;
  color: var(--page-about-deep);
  margin: 0 0 16px;
}

.page-about-honors-intro p {
  font-size: 15px;
  color: var(--page-about-steel);
}

.page-about-honor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 38px;
}

.page-about-honor-card {
  position: relative;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--page-about-mist);
  border-radius: var(--page-about-radius);
  padding: 28px 26px;
  box-shadow: 0 4px 12px rgba(10,26,47,0.05);
}

.page-about-honor-card::after {
  content: "";
  position: absolute;
  right: -24px;
  top: -24px;
  width: 90px;
  height: 90px;
  background: linear-gradient(135deg, rgba(255,90,31,0.14), rgba(255,179,71,0.06));
  transform: rotate(45deg);
  border-radius: 10px;
  pointer-events: none;
}

.page-about-honor-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  background: rgba(255,90,31,0.12);
  color: var(--page-about-orange);
  border-radius: 999px;
}

.page-about-honor-card h3 {
  font-family: var(--page-about-serif);
  font-size: 19px;
  line-height: 1.5;
  color: var(--page-about-deep);
  margin: 18px 0 10px;
}

.page-about-honor-card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--page-about-steel);
  margin: 0;
}

.page-about-partners-head {
  margin-top: 56px;
  max-width: 720px;
}

.page-about-partners-head h3 {
  font-family: var(--page-about-serif);
  font-size: 24px;
  color: var(--page-about-deep);
  margin: 0 0 8px;
}

.page-about-partners-head p {
  font-size: 14px;
  color: var(--page-about-steel);
}

.page-about-partner-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 16px;
  margin: 28px 0 40px;
}

.page-about-partner-card {
  background: #fff;
  border: 1px solid var(--page-about-mist);
  border-radius: var(--page-about-radius);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about-partner-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 22px rgba(10,26,47,0.1);
}

.page-about-partner-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--page-about-deep), var(--page-about-mid));
  color: var(--page-about-amber);
  font-size: 13px;
  font-weight: 600;
  border-radius: 10px;
}

.page-about-partner-card strong {
  font-size: 15px;
  color: var(--page-about-deep);
}

.page-about-partner-card p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--page-about-steel);
  margin: 0;
}

.page-about-honors-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 8px;
}

/* ===== 延伸阅读 ===== */
.page-about-reading {
  background: linear-gradient(135deg, var(--page-about-deep) 0%, var(--page-about-mid) 100%);
  color: var(--page-about-ice);
  padding: 76px 0;
}

.page-about-reading .sk-eyebrow {
  color: var(--page-about-amber);
  letter-spacing: 0.14em;
  margin-bottom: 12px;
}

.page-about-reading h2 {
  font-family: var(--page-about-serif);
  font-size: 32px;
  color: #fff;
  margin: 0 0 28px;
}

.page-about-reading-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about-reading-card {
  display: block;
  padding: 24px 20px;
  background: rgba(248,250,252,0.08);
  border: 1px solid rgba(248,250,252,0.14);
  border-radius: var(--page-about-radius);
  color: var(--page-about-ice);
  text-decoration: none;
  transition: background 0.3s ease, transform 0.3s ease;
}

.page-about-reading-card:hover {
  background: rgba(248,250,252,0.16);
  transform: translateY(-3px);
}

.page-about-reading-card span {
  display: block;
  font-family: var(--page-about-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--page-about-amber);
  margin-bottom: 6px;
}

.page-about-reading-card p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(248,250,252,0.76);
  margin: 0;
}

/* ===== 响应式增强 ===== */
@media (min-width: 768px) {
  .page-about-hero {
    padding: 64px 0 92px;
  }

  .page-about-hero-stats {
    gap: 18px;
  }

  .page-about-overview-main {
    grid-template-columns: 1fr 1.15fr;
    gap: 36px;
  }

  .page-about-timeline {
    padding-left: 0;
  }

  .page-about-timeline::before {
    left: 52px;
  }

  .page-about-timeline-item {
    padding-left: 118px;
    max-width: 820px;
  }

  .page-about-timeline-item::before {
    left: 46px;
  }

  .page-about-team-grid {
    grid-template-columns: 1fr 360px;
    gap: 48px;
    align-items: start;
  }

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

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

@media (min-width: 960px) {
  .page-about-overview-grid {
    grid-template-columns: 300px 1fr;
    gap: 56px;
  }

  .page-about-overview-side {
    border-left-width: 4px;
  }

  .page-about-team-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    align-content: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
    animation: none !important;
  }
}