/* 亚洲之子 · 霓虹日落都市视觉体系
   主色: #120c1d #1b1230 #ff785a #37c7b8 #f8f2ea
*/
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', system-ui, sans-serif;
  background: #120c1d;
  color: #f8f2ea;
}
.heading-mark {
  font-family: 'Noto Serif SC', 'Noto Sans SC', serif;
  font-weight: 900;
  letter-spacing: .03em;
}
.neon-grid {
  background-image:
    linear-gradient(to right, rgba(120,234,220,0.09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,120,90,0.08) 1px, transparent 1px);
  background-size: 32px 32px;
}
.aura-blob {
  background:
    radial-gradient(circle at 20% 20%, rgba(255,120,90,0.22), transparent 35%),
    radial-gradient(circle at 80% 30%, rgba(120,234,220,0.18), transparent 30%),
    radial-gradient(circle at 50% 80%, rgba(255,255,255,0.08), transparent 26%);
}
.btn-coral {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #ff9472 0%, #ff785a 45%, #de5436 100%);
  color: #120c1d;
  font-weight: 900;
  border: 1px solid rgba(255,255,255,0.2);
  box-shadow: 0 18px 40px -18px rgba(255,120,90,0.7), inset 0 1px 0 rgba(255,255,255,0.4);
  transition: transform .18s ease, filter .2s ease;
}
.btn-coral:hover { transform: translateY(-2px); filter: brightness(1.05); }
.btn-coral:active { transform: translateY(0); }
.btn-coral::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0; left: 0; width: 35%;
  background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,0.8) 50%, transparent 100%);
  filter: blur(3px);
  animation: shine 2.4s linear infinite;
  pointer-events: none;
}
@keyframes shine {
  0% { transform: translateX(-120%) skewX(-18deg); }
  100% { transform: translateX(220%) skewX(-18deg); }
}
.btn-glass {
  background: rgba(255,255,255,0.08);
  color: #f8f2ea;
  border: 1px solid rgba(255,255,255,0.14);
  backdrop-filter: blur(10px);
}
.btn-glass:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(120,234,220,0.35);
}
.btn-soft {
  background: rgba(18,12,29,0.08);
  color: #120c1d;
  border: 1px solid rgba(18,12,29,0.12);
}
.btn-soft:hover { background: rgba(18,12,29,0.12); }
.hero-panel {
  background: linear-gradient(180deg, rgba(18,12,29,0.92), rgba(27,18,48,0.86));
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 30px 70px -36px rgba(0,0,0,0.85);
}
.hero-chip {
  border: 1px solid rgba(255,120,90,0.28);
  background: rgba(255,120,90,0.09);
}
.soft-chip {
  background: rgba(255,255,255,0.08);
  color: #f8f2ea;
  border: 1px solid rgba(255,255,255,0.08);
}
.metric-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.10);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}
.hero-line {
  background: linear-gradient(90deg, #ff785a, #78eadc);
}
.badge-band {
  background: linear-gradient(135deg, #78eadc 0%, #f8f2ea 100%);
  border-radius: 999px;
}
.info-card {
  background: #ffffff;
  border: 1px solid rgba(18,12,29,0.08);
  border-radius: 20px;
  padding: 1rem;
  box-shadow: 0 14px 30px -24px rgba(18,12,29,0.35);
}
.info-card .mini {
  color: #6a5c78;
  font-size: 11px;
  font-weight: 700;
  margin-bottom: .3rem;
}
.info-card .main {
  color: #120c1d;
  font-weight: 900;
}
.feature-card {
  background: linear-gradient(180deg, #ffffff 0%, #fff8f3 100%);
  border: 1px solid rgba(18,12,29,0.08);
  border-radius: 26px;
  padding: 1.4rem;
  box-shadow: 0 22px 40px -28px rgba(18,12,29,0.28);
  transition: transform .18s ease, box-shadow .2s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 48px -28px rgba(18,12,29,0.34);
}
.feature-card h3 {
  color: #120c1d;
  font-size: 1.15rem;
  font-weight: 900;
  margin-bottom: .7rem;
}
.feature-card p { color: #5f526d; line-height: 1.8; }
.download-panel {
  background: rgba(248,242,234,0.95);
  box-shadow: 0 24px 50px -28px rgba(18,12,29,0.4);
}
.timeline-card, .faq-card.dark {
  background: #221638;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 22px;
  overflow: hidden;
}
.faq-card {
  background: #ffffff;
  border: 1px solid rgba(18,12,29,0.08);
  border-radius: 22px;
  overflow: hidden;
}
.timeline-card summary, .faq-card summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 1.3rem;
  cursor: pointer;
  list-style: none;
  font-weight: 800;
}
.timeline-card .body, .faq-card .body {
  padding: 0 1.3rem 1.2rem;
  line-height: 1.8;
  color: inherit;
}
.timeline-card .body { color: #e8deef; }
.faq-card .body { color: #594c67; }
.faq-card.dark .body { color: #e8deef; }
details > summary::-webkit-details-marker { display: none; }
.acc-icon { transition: transform .25s ease; font-size: 1.5rem; line-height: 1; }
details[open] .acc-icon { transform: rotate(45deg); }
.review-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 26px;
  padding: 1.4rem;
  animation: fadeUp .9s ease-out both;
}
.review-card .stars { color: #ffb14a; margin-bottom: .8rem; letter-spacing: .14em; }
.review-card p { color: #f3ebf8; line-height: 1.9; }
.review-card .meta { color: #bcaecc; margin-top: 1rem; font-size: .875rem; }
.nav-link { position: relative; color: #f3ebf8; }
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: linear-gradient(90deg, #ff785a, #78eadc);
  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: #ff9472; }
.lb-overlay { background: rgba(10, 8, 16, 0.94); }
.lb-img { max-height: 86vh; max-width: 92vw; object-fit: contain; }
.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: 480px; }
#siteHeader {
  background-color: rgba(18,12,29,0.94) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.filter-chip {
  background: rgba(18,12,29,0.06);
  border: 1px solid rgba(18,12,29,0.10);
  color: #120c1d;
  font-weight: 700;
}
[data-gallery-filter].is-active {
  background: #ff785a;
  color: #120c1d;
  border-color: #ff785a;
  font-weight: 900;
}
.guide-sidebar {
  background: linear-gradient(180deg, #fffaf4, #fff);
  border: 1px solid rgba(18,12,29,0.08);
  box-shadow: 0 20px 36px -28px rgba(18,12,29,0.32);
}
.toc a { color: #5f526d; transition: color .2s ease, border-color .2s ease; }
.toc a:hover, .toc a.active { color: #ff785a; border-color: #ff785a; }
.guide-card {
  background: linear-gradient(180deg, #ffffff 0%, #fff7f0 100%);
  border: 1px solid rgba(18,12,29,0.08);
  border-radius: 24px;
  padding: 1.3rem;
  transition: transform .18s ease, box-shadow .2s ease;
}
.guide-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 40px -26px rgba(18,12,29,0.32);
}
.guide-card h4 {
  color: #120c1d;
  font-size: 1.1rem;
  font-weight: 900;
  margin-bottom: .5rem;
}
.guide-card p { color: #5f526d; line-height: 1.8; }
.guide-card span { display: inline-block; margin-top: 1rem; color: #ff785a; font-weight: 800; }
.panel-soft {
  background: linear-gradient(180deg, #fffdf9 0%, #fff8f1 100%);
  border: 1px solid rgba(18,12,29,0.08);
  box-shadow: 0 16px 30px -24px rgba(18,12,29,0.22);
}
.guide-table th, .guide-table td {
  border: 1px solid #e6d7c7;
  padding: .7rem .85rem;
}
.guide-table thead th {
  background: #1b1230;
  color: #f8f2ea;
  text-align: left;
  font-weight: 900;
}
.guide-table tbody tr:nth-child(even) { background: #fff8f1; }
.platform-card {
  position: relative;
  background: linear-gradient(180deg, #ffffff 0%, #fff8f1 100%);
  border: 1px solid rgba(18,12,29,0.08);
  border-radius: 28px;
  padding: 2rem;
  box-shadow: 0 24px 44px -30px rgba(18,12,29,0.28);
}
.platform-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: .45rem .8rem;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .18em;
}
.step-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 24px;
  padding: 1.5rem;
}
.step-card .step {
  display: inline-block;
  margin-bottom: .9rem;
  padding: .35rem .75rem;
  border-radius: 999px;
  background: rgba(255,120,90,0.14);
  color: #ff9472;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .18em;
}
.step-card h3 { font-size: 1.2rem; font-weight: 900; margin-bottom: .6rem; }
.step-card p { color: #d8cfe2; line-height: 1.8; }
.sys-card {
  overflow: hidden;
  border-radius: 24px;
  background: #ffffff;
  box-shadow: 0 22px 36px -28px rgba(18,12,29,0.22);
}
.sys-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
}
.sys-head.dark { background: #1b1230; color: #f8f2ea; }
.sys-head.coral { background: #ff785a; color: #120c1d; }
.sys-card table td {
  padding: .85rem 1.5rem;
  border-bottom: 1px solid #f0e4d8;
  color: #5f526d;
}
.sys-card table td:first-child {
  width: 8rem;
  color: #120c1d;
  font-weight: 800;
}
.sys-card table tr:last-child td { border-bottom: 0; }
@keyframes fadeUp {
  0% { opacity: 0; transform: translateY(18px); }
  100% { opacity: 1; transform: translateY(0); }
}
@media (max-width: 1023px) {
  .hero-panel { background: rgba(18,12,29,0.95); }
}