/**
 * 视觉方向：九界之上 · 熔岩橙 · 极夜黑
 * 风格：Modern ACG Mobile · 毛玻璃 + 极细线框 + 斜角切割
 */
:root {
  --accent: #FF4D00;
  --accent-light: #FF8A4C;
  --accent-dark: #CC3D00;
  --accent-glow: rgba(255, 77, 0, 0.55);
  --accent-glow-soft: rgba(255, 77, 0, 0.28);
  --mg-wire: rgba(255,77,0,0.26);
  --mg-glass: rgba(255,77,0,0.08);
  --mg-glass-strong: rgba(10,5,3,0.9);
  --mg-text: #FFF4ED;
  --mg-text-muted: rgba(255,244,237,0.66);
  --mg-bg: #0A0503;
  --mg-sidebar-w: 15.5rem;
  --font-display: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --font-ui: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --font-body: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
}
html { scroll-behavior: smooth; }
body {
  background: var(--mg-bg);
  color: var(--mg-text);
  font-family: var(--font-body);
  font-feature-settings: 'tnum';
}
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(ellipse 80% 55% at 12% -8%, color-mix(in srgb, var(--accent) 28%, transparent), transparent 58%),
    radial-gradient(ellipse 60% 45% at 92% 8%, color-mix(in srgb, var(--accent-light) 18%, transparent), transparent 52%);
}
h1, h2, .mg-title-cn, .mg-sidebar-brand-title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: 0.01em;
}
.mg-title-en, .mg-sidebar-brand-sub, .mg-sidebar-label, .mg-sidebar-num, .mg-tag, .btn-breathe, .mg-tab {
  font-family: var(--font-ui);
  letter-spacing: 0.04em;
}
.mg-theme-dark { color-scheme: dark; }
.mg-theme-light { color-scheme: light; }
.mg-glass {
  background: var(--mg-glass);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
}
.mg-wire { border: 1px solid var(--mg-wire); }
.mg-bevel { clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px); }
.mg-bevel-sm { clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px); }
.mg-bevel-lg { clip-path: polygon(24px 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%, 0 24px); }
.btn-breathe {
  position: relative;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 92%, white), color-mix(in srgb, var(--accent-dark) 88%, black));
  color: #FFFFFF;
  border: 1px solid color-mix(in srgb, var(--accent-light) 75%, white);
  box-shadow: 0 0 0 1px rgba(255,77,0,0.35), 0 10px 36px rgba(255,77,0,0.45);
  animation: breathe-btn 2.4s ease-in-out infinite;
  transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.btn-breathe:hover { transform: translateY(-2px); filter: brightness(1.08); box-shadow: 0 0 0 1px rgba(255,77,0,0.55), 0 14px 44px rgba(255,77,0,0.6); }
@keyframes breathe-btn {
  0%, 100% { box-shadow: 0 0 0 1px rgba(255,77,0,0.28), 0 8px 28px rgba(255,77,0,0.38); }
  50% { box-shadow: 0 0 0 1px rgba(255,77,0,0.65), 0 12px 42px rgba(255,77,0,0.62), 0 0 56px rgba(255,77,0,0.35); }
}
.mg-layout { min-height: 100vh; }
@media (min-width: 1024px) { .mg-layout { margin-left: var(--mg-sidebar-w); } }
.mg-sidebar {
  position: fixed; inset: 0 auto 0 0; z-index: 70;
  width: min(88vw, 17.5rem);
  transform: translateX(-105%);
  transition: transform .28s ease;
  pointer-events: none;
}
.mg-sidebar.is-open {
  transform: translateX(0);
  pointer-events: auto;
}
@media (min-width: 1024px) {
  .mg-sidebar {
    width: var(--mg-sidebar-w);
    transform: none;
    pointer-events: auto;
  }
}
.mg-sidebar-backdrop {
  display: none;
  position: fixed; inset: 0; z-index: -1;
  background: rgba(0, 0, 0, 0.48);
  backdrop-filter: blur(2px);
}
.mg-sidebar.is-open .mg-sidebar-backdrop { display: block; }
@media (min-width: 1024px) { .mg-sidebar-backdrop { display: none !important; } }
.mg-sidebar-panel {
  display: flex; flex-direction: column;
  height: 100%; margin: 0.75rem; padding: 1.1rem 1rem 1rem;
  overflow: hidden;
  border-left: 3px solid var(--accent);
  box-shadow: inset 0 0 40px color-mix(in srgb, var(--accent) 8%, transparent);
}
@media (min-width: 1024px) {
  .mg-sidebar-panel {
    margin: 0.85rem 0.65rem 0.85rem 0.85rem;
    height: calc(100% - 1.7rem);
  }
}
.mg-sidebar-brand {
  display: flex; align-items: flex-start; gap: 0.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--mg-wire);
  text-decoration: none; color: inherit;
}
.mg-sidebar-logo {
  flex-shrink: 0; width: 2.5rem; height: 2.5rem; object-fit: cover;
}
.mg-sidebar-brand-meta { min-width: 0; flex: 1; }
.mg-sidebar-brand-title {
  display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2;
  overflow: hidden;
  font-size: 0.875rem; font-weight: 800; line-height: 1.4; letter-spacing: 0.01em;
  color: var(--mg-text);
}
.mg-sidebar-brand-sub {
  margin-top: 0.25rem;
  font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--mg-text-muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.mg-sidebar-label {
  margin: 1rem 0 0.55rem;
  font-size: 0.62rem; font-weight: 700; letter-spacing: 0.32em;
  color: var(--mg-text-muted);
}
.mg-sidebar-nav {
  display: flex; flex-direction: column; gap: 0.35rem;
  flex: 1; min-height: 0; overflow-y: auto;
  padding-right: 0.15rem;
}
.mg-sidebar-link {
  display: flex; align-items: center; gap: 0.65rem;
  padding: 0.62rem 0.7rem;
  border: 1px solid transparent; border-radius: 2px;
  color: var(--mg-text-muted); text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.mg-sidebar-link:hover {
  color: var(--mg-text);
  border-color: var(--mg-wire);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
}
.mg-sidebar-link.is-active {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  box-shadow: inset 3px 0 0 var(--accent);
}
.mg-sidebar-num {
  flex-shrink: 0;
  width: 1.75rem; height: 1.75rem;
  display: grid; place-items: center;
  font-size: 0.62rem; font-weight: 800; letter-spacing: 0.06em;
  border: 1px solid var(--mg-wire);
  color: var(--mg-text-muted);
}
.mg-sidebar-link.is-active .mg-sidebar-num {
  border-color: color-mix(in srgb, var(--accent) 55%, transparent);
  color: var(--accent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--accent) 35%, transparent);
}
.mg-sidebar-link-text {
  font-size: 0.875rem; font-weight: 600; letter-spacing: 0.04em;
  line-height: 1.2;
}
.mg-sidebar-foot {
  margin-top: 0.85rem; padding-top: 0.85rem;
  border-top: 1px solid var(--mg-wire);
}
.mg-topbar {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
}
@media (min-width: 1024px) {
  .mg-topbar { left: var(--mg-sidebar-w); right: 0; width: auto; }
}
.mg-topbar-scrolled { box-shadow: 0 8px 32px rgba(0,0,0,0.12); }
.mg-hero-scrim, .mg-hero-scrim-center, .mg-hero-scrim-band {
  background: linear-gradient(135deg, color-mix(in srgb, var(--mg-bg) 92%, transparent), color-mix(in srgb, var(--mg-bg) 55%, transparent) 55%, transparent);
}
.mg-hero-scrim-center {
  background: radial-gradient(ellipse 80% 70% at 50% 40%, color-mix(in srgb, var(--mg-bg) 75%, transparent), color-mix(in srgb, var(--mg-bg) 90%, transparent));
}
.mg-hero-scrim-band {
  background: linear-gradient(to top, color-mix(in srgb, var(--mg-bg) 95%, transparent) 0%, color-mix(in srgb, var(--mg-bg) 40%, transparent) 45%, transparent 100%);
}
.mg-title-panel {
  position: relative; display: inline-block;
  padding: 0.25rem 0;
}
.mg-title-panel::before {
  content: ''; position: absolute; inset: -0.75rem -1rem;
  background: color-mix(in srgb, var(--mg-bg) 55%, transparent);
  border: 1px solid var(--mg-wire); backdrop-filter: blur(8px);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  z-index: -1;
}
.mg-title-cn { text-shadow: 0 2px 24px color-mix(in srgb, var(--mg-bg) 80%, transparent); }
.mg-title-en { opacity: 0.95; }
.mg-tag { font-size: 0.65rem; letter-spacing: 0.18em; opacity: 0.85; }
.mg-tag-accent { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }
.mg-card-index { font-size: 0.75rem; font-weight: 800; letter-spacing: 0.2em; opacity: 0.5; }
.mg-gallery-label {
  position: absolute; left: 0.5rem; right: 0.5rem; bottom: 0.5rem; font-size: 0.65rem;
  letter-spacing: 0.12em; opacity: 0; transition: opacity .3s;
  background: color-mix(in srgb, var(--mg-bg) 70%, transparent); padding: 0.25rem 0.5rem;
}
.mg-gallery-item:hover .mg-gallery-label { opacity: 1; }
.mg-ticker-track { display: flex; gap: 2rem; white-space: nowrap; animation: mg-ticker 24s linear infinite; }
@keyframes mg-ticker { to { transform: translateX(-50%); } }
.mg-timeline-item { position: relative; padding-left: 1.75rem; }
.mg-timeline-dot {
  position: absolute; left: 0; top: 0.65rem; width: 10px; height: 10px; border-radius: 999px;
  background: var(--accent); box-shadow: 0 0 0 4px rgba(255,77,0,0.2), 0 0 16px rgba(255,77,0,0.45);
}
.mg-tab { opacity: 0.7; }
.mg-tab-active { opacity: 1; color: var(--accent); border-color: color-mix(in srgb, var(--accent) 50%, transparent); }
.mg-footer { background: color-mix(in srgb, var(--mg-bg) 95%, transparent); }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.text-beam-400 { color: var(--accent) !important; }
.text-beam-300 { color: var(--accent-light) !important; }
.bg-beam-400 { background-color: var(--accent) !important; }
.bg-beam-400\/15 { background-color: color-mix(in srgb, var(--accent) 15%, transparent) !important; }
.bg-beam-400\/20 { background-color: color-mix(in srgb, var(--accent) 20%, transparent) !important; }
.border-beam-400\/50 { border-color: color-mix(in srgb, var(--accent) 50%, transparent) !important; }
.hover\:text-beam-300:hover { color: var(--accent-light) !important; }
.hover\:text-beam-400:hover { color: var(--accent) !important; }
.hover\:border-beam-400\/50:hover { border-color: color-mix(in srgb, var(--accent) 50%, transparent) !important; }
.mg-article-body h2 { margin-top: 2rem; font-size: 1.15rem; font-weight: 800; color: var(--mg-text); }
.mg-article-body h2:first-child { margin-top: 0; }
.mg-article-body p { margin-top: 0.85rem; line-height: 1.85; opacity: 0.86; }
.mg-article-body ul, .mg-article-body ol { margin-top: 0.85rem; padding-left: 1.35rem; opacity: 0.86; }
.mg-article-body li { margin-top: 0.4rem; line-height: 1.75; }
.mg-article-body table { width: 100%; margin-top: 1rem; border-collapse: collapse; font-size: 0.875rem; }
.mg-article-body th, .mg-article-body td { border: 1px solid var(--mg-wire); padding: 0.65rem 0.75rem; text-align: left; vertical-align: top; }
.mg-article-body th { background: color-mix(in srgb, var(--accent) 10%, transparent); font-weight: 700; }
.mg-article-body a { color: var(--accent); }
.mg-article-body strong { color: var(--mg-text); font-weight: 700; }