/* ===== 页面作用域: page-about ===== */
.page-about {
  --about-ink: #172B40;
  --about-ink-muted: #4A5A6D;
  --about-paper-deep: #E9E2D3;
  --about-primary-glow: rgba(0, 168, 255, 0.14);
  --about-accent-glow: rgba(57, 255, 20, 0.32);
  --about-highlight-glow: rgba(255, 107, 53, 0.28);
  --about-line-soft: rgba(0, 168, 255, 0.22);
}

/* ---------- Hero / 框景首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 56px 20px 72px;
  background:
    radial-gradient(ellipse at 82% 18%, rgba(0, 168, 255, 0.16), transparent 42%),
    radial-gradient(ellipse at 15% 82%, rgba(57, 255, 20, 0.06), transparent 30%),
    linear-gradient(165deg, var(--bg-deep) 0%, var(--bg) 52%, #071422 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-hero-deco {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.page-about .deco-line {
  position: absolute;
  left: 0;
  width: 120%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 168, 255, 0.4), transparent);
}

.page-about .deco-line--one {
  top: 26%;
  transform: rotate(-8deg);
}

.page-about .deco-line--two {
  top: 60%;
  transform: rotate(6deg);
}

.page-about .deco-slant {
  position: absolute;
  top: -20%;
  right: -6%;
  width: 2px;
  height: 140%;
  background: linear-gradient(180deg, transparent, rgba(57, 255, 20, 0.18), transparent);
  transform: rotate(18deg);
}

.page-about .deco-dot {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.page-about .deco-dot--a {
  top: 20%;
  left: 12%;
  background: var(--highlight);
  box-shadow: 0 0 14px var(--about-highlight-glow);
}

.page-about .deco-dot--b {
  bottom: 24%;
  right: 18%;
  background: var(--accent);
  box-shadow: 0 0 14px var(--about-accent-glow);
}

.page-about .about-hero-frame {
  position: relative;
  z-index: 2;
  max-width: 920px;
  margin: 0 auto;
  border: 2px solid rgba(0, 168, 255, 0.38);
  border-radius: var(--radius-card);
  padding: 34px 22px 40px;
  background: rgba(11, 27, 43, 0.62);
  box-shadow:
    inset 0 0 36px rgba(0, 168, 255, 0.06),
    0 18px 50px rgba(0, 0, 0, 0.34);
}

.page-about .about-hero-frame::before,
.page-about .about-hero-frame::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--primary);
  border-style: solid;
}

.page-about .about-hero-frame::before {
  top: 10px;
  left: 10px;
  border-width: 2px 0 0 2px;
}

.page-about .about-hero-frame::after {
  right: 10px;
  bottom: 10px;
  border-width: 0 2px 2px 0;
}

.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 28px;
}

.page-about .about-hero-station {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.12em;
  padding: 4px 10px;
  border: 1px solid rgba(57, 255, 20, 0.4);
  border-radius: var(--radius-pill);
  background: rgba(57, 255, 20, 0.08);
}

.page-about .breadcrumb {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 6px;
}

.page-about .breadcrumb a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--accent);
}

.page-about .breadcrumb span[aria-current="page"] {
  color: var(--text-muted);
}

.page-about h1 {
  font-family: var(--font-display);
  font-size: 30px;
  line-height: 1.18;
  color: var(--text);
  margin: 0 0 18px;
  letter-spacing: 0.02em;
  text-transform: none;
  word-break: break-word;
}

.page-about .hero-sep {
  color: var(--highlight);
  font-weight: 400;
  padding: 0 2px;
}

.page-about .about-hero-lead {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-sub);
  margin: 0 0 24px;
  max-width: 56em;
}

.page-about .about-hero-index {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-about .hero-index-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--text);
}

.page-about .hero-index-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(57, 255, 20, 0.6);
}

/* ---------- 页内锚点导航 ---------- */
.page-about .about-inner-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: -24px 16px 0;
  position: relative;
  z-index: 3;
}

.page-about .about-inner-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--bg-deep);
  border: 1px solid var(--line);
  color: var(--text-sub);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: border-color 0.24s ease, color 0.24s ease, transform 0.2s ease, box-shadow 0.24s ease;
}

.page-about .about-inner-link:hover {
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-2px);
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.18);
}

.page-about .inner-link-index {
  color: var(--primary);
  font-size: 11px;
  font-weight: 400;
}

/* ---------- Section 通用 ---------- */
.page-about .about-section-heading {
  margin-bottom: 30px;
}

.page-about .section-note {
  display: block;
  margin-top: 6px;
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: 0.14em;
}

/* ---------- 我们的故事 ---------- */
.page-about .about-story {
  background: var(--paper);
  color: var(--about-ink);
  padding: 68px 20px 72px;
  position: relative;
}

.page-about .about-story::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 12px;
  background: repeating-linear-gradient(
    135deg,
    var(--bg-deep) 0,
    var(--bg-deep) 12px,
    transparent 12px,
    transparent 26px
  );
  opacity: 0.7;
}

.page-about .about-story .section-index {
  color: var(--highlight);
  border-color: rgba(255, 107, 53, 0.4);
}

.page-about .about-story .section-heading h2 {
  color: var(--about-ink);
}

.page-about .about-story .section-note {
  color: rgba(74, 90, 109, 0.8);
}

.page-about .story-grid {
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-about .story-copy p {
  font-size: 15px;
  line-height: 1.9;
  margin: 0 0 16px;
  color: var(--about-ink);
}

.page-about .story-copy p:last-child {
  margin-bottom: 0;
}

.page-about .story-copy .story-lead {
  font-size: 17px;
  font-weight: 700;
  color: var(--about-ink);
  line-height: 1.7;
  padding-left: 16px;
  border-left: 4px solid var(--highlight);
}

.page-about .story-copy strong {
  font-weight: 700;
  color: #0D4F78;
}

.page-about .story-figure {
  margin: 0;
  position: relative;
}

.page-about .story-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid rgba(23, 43, 64, 0.5);
  border-radius: var(--radius-card);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.16);
}

.page-about .story-figure figcaption,
.page-about .milestone-figure figcaption,
.page-about .belief-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.page-about .story-figure figcaption {
  color: var(--about-ink-muted);
}

.page-about .story-figure::after {
  content: "2019";
  position: absolute;
  top: -14px;
  right: 14px;
  background: var(--paper);
  color: var(--highlight);
  font-family: var(--font-display);
  font-size: 42px;
  line-height: 1;
  padding: 2px 8px;
  border: 2px solid rgba(255, 107, 53, 0.45);
  border-radius: 6px;
  transform: rotate(3deg);
}

/* ---------- 发展里程碑 ---------- */
.page-about .about-milestones {
  background:
    radial-gradient(circle at 90% 10%, rgba(0, 168, 255, 0.1), transparent 36%),
    var(--bg);
  padding: 72px 20px 80px;
  position: relative;
}

.page-about .about-milestones::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--highlight));
}

.page-about .milestone-layout {
  display: grid;
  gap: 40px;
}

.page-about .about-timeline {
  position: relative;
  padding-left: 24px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 55%, var(--highlight) 100%);
}

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

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

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 14px var(--about-accent-glow);
  border: 2px solid var(--bg);
}

.page-about .timeline-item:nth-child(2)::before {
  background: var(--primary);
  box-shadow: 0 0 14px var(--about-primary-glow);
}

.page-about .timeline-item:nth-child(3)::before {
  background: var(--highlight);
  box-shadow: 0 0 14px var(--about-highlight-glow);
}

.page-about .timeline-year {
  display: inline-block;
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 6px;
  letter-spacing: 0.06em;
}

.page-about .timeline-item:nth-child(2) .timeline-year {
  color: var(--primary);
}

.page-about .timeline-item:nth-child(3) .timeline-year {
  color: var(--highlight);
}

.page-about .timeline-card {
  background: rgba(0, 43, 74, 0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 18px 20px 16px;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.page-about .timeline-item:hover .timeline-card {
  border-color: rgba(57, 255, 20, 0.45);
  transform: translateX(4px);
  box-shadow: 0 0 22px rgba(57, 255, 20, 0.08);
}

.page-about .timeline-card h3 {
  font-size: 19px;
  margin: 8px 0 10px;
  color: var(--text);
  font-weight: 700;
}

.page-about .timeline-card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-sub);
  margin: 0 0 10px;
}

.page-about .timeline-meta {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.12em;
}

.page-about .milestone-aside {
  display: grid;
  gap: 20px;
}

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

.page-about .milestone-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}

.page-about .milestone-figure figcaption {
  color: var(--text-muted);
}

.page-about .milestone-note {
  background: var(--bg-deep);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  padding: 18px 20px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.page-about .milestone-note-icon {
  font-size: 22px;
  color: var(--accent);
  line-height: 1;
  flex-shrink: 0;
}

.page-about .milestone-note p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-sub);
  margin: 0;
}

/* ---------- 核心数据 ---------- */
.page-about .about-stats {
  background:
    linear-gradient(140deg, rgba(0, 43, 74, 0.7) 0%, var(--bg-deep) 60%, rgba(11, 27, 43, 0.9) 100%),
    var(--bg-deep);
  padding: 72px 20px 80px;
  position: relative;
}

.page-about .stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 40px;
}

.page-about .stats-block {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-about .stats-block:hover {
  border-color: rgba(57, 255, 20, 0.5);
  transform: translateY(-3px);
}

.page-about .stats-num {
  display: block;
  font-size: 34px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--accent);
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 18px rgba(57, 255, 20, 0.15);
}

.page-about .stats-block:nth-child(2) .stats-num {
  color: var(--primary);
  text-shadow: 0 0 18px rgba(0, 168, 255, 0.2);
}

.page-about .stats-block:nth-child(3) .stats-num {
  color: var(--highlight);
  text-shadow: 0 0 18px rgba(255, 107, 53, 0.2);
}

.page-about .stats-block:nth-child(4) .stats-num {
  color: var(--text);
  text-shadow: 0 0 18px rgba(255, 255, 255, 0.12);
}

.page-about .stats-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}

.page-about .stats-desc {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.6;
  margin: 0;
}

.page-about .archive-taxo {
  background: rgba(11, 27, 43, 0.7);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 28px 20px;
}

.page-about .taxo-head {
  margin-bottom: 22px;
}

.page-about .taxo-title {
  display: block;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.page-about .taxo-note {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

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

.page-about .taxo-row {
  display: grid;
  grid-template-columns: 1fr 88px 62px;
  align-items: center;
  gap: 10px;
}

.page-about .taxo-tag {
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
}

.page-about .taxo-bar {
  height: 6px;
  background: rgba(176, 196, 222, 0.15);
  border-radius: 99px;
  overflow: hidden;
}

.page-about .taxo-bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 99px;
}

.page-about .taxo-count {
  font-size: 12px;
  color: var(--text-sub);
  text-align: right;
}

/* ---------- 服务信念 ---------- */
.page-about .about-belief {
  background: var(--paper);
  color: var(--about-ink);
  padding: 72px 20px 80px;
  position: relative;
}

.page-about .about-belief .section-index {
  color: var(--primary);
  border-color: rgba(0, 168, 255, 0.4);
}

.page-about .about-belief .section-heading h2 {
  color: var(--about-ink);
}

.page-about .about-belief .section-note {
  color: rgba(74, 90, 109, 0.8);
}

.page-about .belief-grid {
  display: grid;
  gap: 16px;
  margin-bottom: 36px;
}

.page-about .belief-card {
  background: #FFFFFF;
  border: 1px solid rgba(23, 43, 64, 0.14);
  border-radius: var(--radius-card);
  padding: 26px 22px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.06);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.page-about .belief-icon {
  display: inline-flex;
  margin-bottom: 14px;
}

.page-about .belief-card h3 {
  font-size: 18px;
  color: var(--about-ink);
  margin: 0 0 10px;
  font-weight: 700;
}

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

.page-about .belief-bottom {
  display: grid;
  gap: 28px;
}

.page-about .belief-quote {
  font-size: 15px;
  line-height: 1.9;
  color: var(--about-ink);
  padding: 20px 22px;
  border-left: 4px solid var(--highlight);
  background: var(--about-paper-deep);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  margin: 0;
}

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

.page-about .belief-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-card);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.page-about .belief-figure figcaption {
  color: var(--about-ink-muted);
}

/* ---------- 底部联系入口 ---------- */
.page-about .about-connect {
  background:
    radial-gradient(circle at 20% 0%, rgba(57, 255, 20, 0.1), transparent 40%),
    var(--bg);
  padding: 64px 20px 72px;
}

.page-about .connect-banner {
  position: relative;
  max-width: 980px;
  margin: 0 auto;
  border: 1px solid rgba(57, 255, 20, 0.25);
  border-radius: var(--radius-card);
  background: linear-gradient(135deg, var(--bg-deep) 0%, var(--bg) 70%);
  padding: 36px 24px;
  overflow: hidden;
}

.page-about .connect-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--primary));
}

.page-about .connect-flag {
  position: absolute;
  top: 18px;
  right: 20px;
  font-family: var(--font-display);
  font-size: 44px;
  color: rgba(57, 255, 20, 0.18);
  line-height: 1;
  user-select: none;
}

.page-about .connect-copy h2 {
  font-size: 22px;
  color: var(--text);
  margin: 0 0 10px;
  font-weight: 700;
}

.page-about .connect-copy p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-sub);
  margin: 0 0 22px;
  max-width: 46em;
}

.page-about .connect-copy a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

.page-about .connect-copy a:hover {
  color: var(--text);
}

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

/* ---------- 媒体查询: 平板与桌面 ---------- */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 72px 32px 88px;
  }

  .page-about .about-hero-frame {
    padding: 44px 40px 48px;
  }

  .page-about h1 {
    font-size: 42px;
  }

  .page-about .about-hero-lead {
    font-size: 17px;
    max-width: 34em;
  }

  .page-about .about-inner-nav {
    margin-top: -28px;
  }

  .page-about .story-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
  }

  .page-about .milestone-layout {
    grid-template-columns: 1.5fr 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .page-about .belief-bottom {
    grid-template-columns: 1fr 1.3fr;
    align-items: center;
  }

  .page-about .connect-banner {
    padding: 44px 48px;
  }

  .page-about .connect-copy h2 {
    font-size: 26px;
  }
}

@media (min-width: 1024px) {
  /* 桌面端时间轴左右交替 */
  .page-about .about-timeline {
    padding-left: 0;
  }

  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .timeline-item {
    width: 50%;
    padding-right: 52px;
    padding-left: 0;
    text-align: right;
  }

  .page-about .timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-left: 52px;
    padding-right: 0;
    text-align: left;
  }

  .page-about .timeline-item::before {
    left: auto;
    right: -8px;
  }

  .page-about .timeline-item:nth-child(even)::before {
    left: -8px;
    right: auto;
  }

  .page-about .timeline-item:nth-child(2)::before,
  .page-about .timeline-item:nth-child(3)::before {
    left: auto;
    right: -8px;
  }

  .page-about .timeline-item:nth-child(even)::before {
    left: -8px;
    right: auto;
  }

  .page-about .timeline-item:hover .timeline-card {
    transform: translateX(-4px);
  }

  .page-about .timeline-item:nth-child(even):hover .timeline-card {
    transform: translateX(4px);
  }
}