/* 青色大脑 · 赛博青雾 + 冷白终端视觉方向
 * 主色: #06131f #0d2236 #173b56 #32d7ff #8ef7c9
 */
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', system-ui, sans-serif;
  background: #06131f;
  color: #dbeafe;
}
.heading-display {
  font-family: 'Noto Sans SC', system-ui, sans-serif;
  letter-spacing: .06em;
  font-weight: 900;
}
.neural-grid {
  background-image:
    linear-gradient(to right, rgba(50,215,255,.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(50,215,255,.06) 1px, transparent 1px);
  background-size: 28px 28px;
}
.signal-stripe {
  background: repeating-linear-gradient(135deg, #32d7ff 0 10px, #173b56 10px 20px);
}
.btn-cyan {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #dffcff 0%, #8ef7c9 30%, #32d7ff 70%, #0fb3da 100%);
  color: #06131f;
  font-weight: 900;
  border: 1px solid rgba(143,247,201,.72);
  box-shadow: 0 16px 38px -14px rgba(50,215,255,.55), inset 0 1px 0 rgba(255,255,255,.55);
  transition: transform .18s ease, filter .2s ease, box-shadow .2s ease;
}
.btn-cyan:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
  box-shadow: 0 20px 44px -14px rgba(50,215,255,.7), inset 0 1px 0 rgba(255,255,255,.75);
}
.btn-cyan:active { transform: translateY(0); }
.btn-cyan::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 34%;
  background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,.82) 50%, transparent 100%);
  filter: blur(4px);
  animation: shine 2.3s linear infinite;
  pointer-events: none;
}
@keyframes shine {
  0% { transform: translateX(-120%) skewX(-20deg); }
  100% { transform: translateX(220%) skewX(-20deg); }
}
.btn-outline {
  background: rgba(6,19,31,.72);
  color: #e6f7ff;
  border: 1.5px solid rgba(50,215,255,.32);
  backdrop-filter: blur(8px);
}
.btn-outline:hover {
  background: rgba(13,34,54,.92);
  color: #8ef7c9;
  border-color: rgba(142,247,201,.62);
}
.panel-dark {
  background: linear-gradient(180deg, rgba(13,34,54,.96), rgba(9,26,42,.98));
  border: 1px solid rgba(50,215,255,.16);
}
.panel-light {
  background: #edf8ff;
  color: #17324a;
  border: 1px solid #bfd9ea;
}
.hero-chip,
.stat-chip,
.data-pill {
  background: rgba(13,34,54,.88);
  border: 1px solid rgba(50,215,255,.24);
}
.hero-badge {
  border-left: 3px solid #8ef7c9;
  background: linear-gradient(90deg, rgba(50,215,255,.18), rgba(6,19,31,.68));
}
.nav-link {
  position: relative;
  color: #b5d6e8;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background: linear-gradient(90deg, #32d7ff, #8ef7c9);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}
.nav-link:hover::after,
.nav-link.active::after { transform: scaleX(1); }
.nav-link:hover,
.nav-link.active { color: #8ef7c9; }
.lb-overlay { background: rgba(2, 9, 16, .95); }
.lb-img { max-height: 86vh; max-width: 92vw; object-fit: contain; }
details > summary { list-style: none; cursor: pointer; }
details > summary::-webkit-details-marker { display: none; }
details[open] .acc-icon { transform: rotate(45deg); }
.acc-icon { transition: transform .25s ease; }
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.show {
  opacity: 1;
  transform: translateY(0);
}
#mobileMenu {
  transition: max-height .3s ease;
  max-height: 0;
  overflow: hidden;
}
#mobileMenu.open { max-height: 540px; }
#siteHeader {
  background-color: rgba(6,19,31,.92) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
[data-gallery-filter] {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(50,215,255,.2);
}
[data-gallery-filter].is-active {
  background: #32d7ff;
  color: #06131f;
  border-color: #8ef7c9;
  font-weight: 900;
}
table.toc-table th,
table.toc-table td {
  border: 1px solid #b9d8eb;
  padding: .65rem .85rem;
}
table.toc-table thead th {
  background: #173b56;
  color: #dffcff;
  font-weight: 900;
  text-align: left;
}
table.toc-table tbody tr:nth-child(even) { background: #f7fcff; }
.toc a.active {
  color: #0fb3da;
  border-color: #8ef7c9;
}
.glow-line {
  height: 2px;
  background: linear-gradient(90deg, transparent, #32d7ff, #8ef7c9, transparent);
}
.scan-orb {
  box-shadow: 0 0 0 10px rgba(50,215,255,.08), 0 0 50px rgba(50,215,255,.22);
}
.hero-scrim-left {
  background: linear-gradient(105deg,
    rgba(6,19,31,1) 0%,
    rgba(6,19,31,.97) 42%,
    rgba(6,19,31,.72) 62%,
    rgba(6,19,31,.24) 82%,
    transparent 100%);
}
@media (max-width: 1023px) {
  .hero-scrim-left {
    background: linear-gradient(180deg,
      rgba(6,19,31,.97) 0%,
      rgba(6,19,31,.92) 55%,
      rgba(6,19,31,.76) 100%);
  }
}