/* ===== 品牌档案 · 页面专属样式 ===== */
.page-about {
  --about-paper: rgba(242, 246, 250, 0.035);
  --about-rule: rgba(46, 74, 100, 0.55);
  --about-gold: rgba(217, 164, 65, 0.14);
  background: var(--ayx-navy-900);
  color: var(--ayx-white);
  overflow-x: hidden;
}

/* ---- 面包屑 ---- */
.page-about .breadcrumbs {
  margin-bottom: clamp(28px, 6vw, 56px);
  font-size: 14px;
  color: var(--ayx-muted);
}

.page-about .breadcrumbs__link {
  color: var(--ayx-muted);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

.page-about .breadcrumbs__link:hover {
  color: var(--ayx-green-400);
}

.page-about .breadcrumbs__current {
  color: var(--ayx-white);
}

/* ---- 品牌简介 ---- */
.page-about__intro {
  position: relative;
  background: var(--ayx-navy-900);
}

.page-about__intro::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at 78% 18%, rgba(34, 229, 132, 0.08), transparent 52%);
}

.page-about__intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}

.page-about__intro-copy {
  position: relative;
  z-index: 1;
}

.page-about .page-title {
  margin: 12px 0 0;
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-about__intro-copy .lead {
  margin-top: 16px;
  font-size: 18px;
  line-height: 1.65;
  color: var(--ayx-white);
}

.page-about__intro-copy .prose {
  margin-top: 20px;
  color: var(--ayx-muted);
}

.page-about__intro-copy .prose p + p {
  margin-top: 12px;
}

.page-about__intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.page-about__intro-media {
  margin: 0;
  border: 1px solid var(--ayx-border);
  background: var(--ayx-navy-700);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

.page-about__media-caption {
  padding: 10px 14px;
  border-top: 1px solid var(--ayx-border);
  color: var(--ayx-muted);
  font-size: 13px;
}

/* ---- 发展历程 ---- */
.page-about__history {
  position: relative;
  background: var(--ayx-navy-700);
}

.page-about__history::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(46, 74, 100, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 74, 100, 0.14) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.5;
}

.page-about__history .container {
  position: relative;
  z-index: 1;
}

.page-about__history-head {
  position: relative;
  max-width: 820px;
  margin-bottom: 36px;
  padding: 24px;
  border: 1px solid var(--about-rule);
  background: rgba(11, 27, 43, 0.3);
}

.page-about__section-title {
  margin: 12px 0 16px;
  font-family: var(--font-heading);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  color: var(--ayx-white);
}

.page-about__history-lead {
  margin: 0;
  color: var(--ayx-muted);
  font-size: 17px;
}

.page-about__history-media {
  margin: 0 0 44px;
  border: 1px solid var(--ayx-border);
  background: var(--ayx-navy-900);
}

.page-about__timeline-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about__timeline-index {
  padding: 22px;
  border: 1px solid var(--about-rule);
  background: var(--about-paper);
  box-shadow: inset 0 0 0 1px rgba(242, 246, 250, 0.02);
}

.page-about__timeline-label {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ayx-muted);
}

.page-about__timeline-index .index-list {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about__timeline-index .index-list__link {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0;
  color: var(--ayx-muted);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

.page-about__timeline-index .index-list__link:hover {
  color: var(--ayx-green-400);
}

.page-about__timeline-index .index-list__num {
  font-family: var(--font-mono);
  color: var(--ayx-green-400);
}

.page-about__timeline-index .index-list__title {
  font-weight: 600;
}

.page-about__timeline-index .index-list__meta {
  margin-left: auto;
  font-size: 13px;
  color: var(--ayx-muted);
  opacity: 0.7;
}

.page-about__timeline-content {
  position: relative;
}

.page-about__timeline-content::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 17px;
  width: 1px;
  background: linear-gradient(180deg, var(--ayx-green-400), var(--ayx-border) 65%, transparent);
}

.page-about__phase {
  position: relative;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 16px;
  padding: 0 0 36px;
}

.page-about__phase:last-of-type {
  padding-bottom: 0;
}

.page-about__phase-num {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--ayx-green-400);
  border-radius: 50%;
  background: var(--ayx-navy-900);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ayx-green-400);
}

.page-about__phase-body {
  padding-top: 4px;
}

.page-about__phase-body h3 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 600;
  color: var(--ayx-white);
}

.page-about__phase-body p {
  max-width: 64ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ayx-muted);
}

/* ---- 本地服务能力 ---- */
.page-about__service {
  position: relative;
  background: var(--ayx-navy-900);
}

.page-about__service::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at 12% 78%, rgba(34, 229, 132, 0.05), transparent 45%);
}

.page-about__service .container {
  position: relative;
  z-index: 1;
}

.page-about__service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 40px;
}

.page-about__service-copy .prose {
  margin-top: 16px;
  color: var(--ayx-muted);
}

.page-about__service-copy .prose p + p {
  margin-top: 12px;
}

.page-about__service-copy .prose a {
  color: var(--ayx-green-300);
  text-decoration: none;
  border-bottom: 1px solid rgba(122, 245, 184, 0.3);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-about__service-copy .prose a:hover {
  color: var(--ayx-green-400);
  border-color: rgba(34, 229, 132, 0.7);
}

.page-about__service-copy .button {
  margin-top: 24px;
}

.page-about__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-about__stat {
  padding: 20px 18px;
  border: 1px solid var(--ayx-border);
  background: var(--ayx-navy-700);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about__stat:hover {
  border-color: rgba(34, 229, 132, 0.5);
  box-shadow: 0 0 0 1px rgba(34, 229, 132, 0.2);
}

.page-about__stat-num {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  line-height: 1;
  color: var(--ayx-green-400);
}

.page-about__stat-label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--ayx-muted);
}

.page-about__service-media {
  margin: 0;
  border: 1px solid var(--ayx-border);
  background: var(--ayx-navy-700);
}

.page-about__intro-media .media-frame__asset,
.page-about__history-media .media-frame__asset,
.page-about__service-media .media-frame__asset {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---- 资质与荣誉 ---- */
.page-about__honor {
  position: relative;
  background: var(--ayx-navy-700);
}

.page-about__honor::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at 82% 10%, rgba(217, 164, 65, 0.09), transparent 55%);
}

.page-about__honor .container {
  position: relative;
  z-index: 1;
}

.page-about__honor-lead {
  max-width: 640px;
  margin: 0 0 32px;
  font-size: 17px;
  color: var(--ayx-muted);
}

.page-about__honor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about__honor-card {
  position: relative;
  padding: 28px 24px 24px;
  border: 1px solid rgba(217, 164, 65, 0.38);
  background: linear-gradient(135deg, rgba(217, 164, 65, 0.08), rgba(11, 27, 43, 0.15));
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about__honor-card:hover {
  border-color: rgba(217, 164, 65, 0.7);
  box-shadow: 0 8px 32px rgba(217, 164, 65, 0.12);
  transform: translateY(-2px);
}

.page-about__honor-code {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 8px;
  border: 1px solid rgba(217, 164, 65, 0.3);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ayx-gold-400);
}

.page-about__honor-title {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 600;
  color: var(--ayx-white);
}

.page-about__honor-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ayx-muted);
}

.page-about__honor-note {
  margin-top: 28px;
}

/* ---- 桌面布局 ---- */
@media (min-width: 960px) {
  .page-about__intro-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .page-about__timeline-layout {
    grid-template-columns: 280px 1fr;
    gap: 56px;
  }

  .page-about__timeline-index {
    position: sticky;
    top: 32px;
    align-self: start;
  }

  .page-about__timeline-index .index-list__link {
    padding: 10px 0;
  }

  .page-about__service-grid {
    grid-template-columns: 5fr 7fr;
    gap: 48px;
    align-items: start;
  }

  .page-about__stats {
    gap: 16px;
  }

  .page-about__honor-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (min-width: 1280px) {
  .page-about__honor-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}