:root {
  --bg: #f0f4f8;
  --bg-sidebar: #e8eef5;
  --bg-card: #ffffff;
  --ink: #1a2332;
  --ink-soft: #5a6b7d;
  --accent: #2563eb;
  --accent-soft: #dbeafe;
  --border: #c9d6e3;
  --link: #1d4ed8;
  --shadow: 0 4px 20px rgba(26, 35, 50, 0.08);
  --radius: 10px;
  --max: 1180px;
  --sidebar-w: 240px;
  --header-h: 64px;
  --font: "Noto Sans SC", "IBM Plex Sans", sans-serif;
  --font-mono: "IBM Plex Sans", monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 20px); }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.82;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

.site-header {
  position: sticky; top: 0; z-index: 500;
  background: rgba(255,255,255,0.97);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}
.header-row {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--header-h); gap: 1rem;
}
.brand { display: flex; align-items: center; gap: 0.6rem; color: var(--ink); font-weight: 600; }
.brand img { border-radius: 8px; }
.brand span { font-size: 1.05rem; }
.brand b { color: var(--accent); }

.site-nav ul { display: flex; gap: 0.25rem; list-style: none; margin: 0; padding: 0; }
.site-nav a {
  display: block; padding: 0.45rem 0.75rem; border-radius: 6px;
  color: var(--ink-soft); font-size: 0.92rem;
}
.site-nav a:hover, .site-nav a.active { background: var(--accent-soft); color: var(--accent); text-decoration: none; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: 0.2s; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.ads-top-bar {
  padding: 0.5rem 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
}
#ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  background: transparent;
  margin: 10px 0;
  gap: 0.5rem;
}
#ads > div,
#ads .ads-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 70px;
  box-sizing: border-box;
}
#ads img {
  width: 65px;
  height: 65px;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 6px 18px rgba(24, 24, 24, 0.12);
  transition: transform 180ms ease, box-shadow 180ms ease;
  display: block;
  border: none;
  background: linear-gradient(135deg, #fff, #fff);
}
#ads a {
  display: inline-block;
  text-decoration: none;
  border-radius: 15px;
}
#ads img:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 10px 24px rgba(24, 24, 24, 0.18);
}
#ads figcaption,
#ads .caption {
  height: 15px;
  font-size: 11px;
  color: #666;
  text-align: center;
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-top: 4px;
}
.applist-title {
  text-align: center;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.wiki-shell { display: grid; grid-template-columns: var(--sidebar-w) 1fr; gap: 0; min-height: calc(100vh - var(--header-h)); }
.wiki-sidebar {
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  padding: 1.25rem 0;
  position: sticky; top: var(--header-h); height: calc(100vh - var(--header-h)); overflow-y: auto;
}
.wiki-sidebar h2 { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); padding: 0 1rem; margin: 0 0 0.5rem; }
.wiki-sidebar a {
  display: block; padding: 0.4rem 1rem; font-size: 0.88rem; color: var(--ink-soft);
  border-left: 3px solid transparent;
}
.wiki-sidebar a:hover { background: rgba(37,99,235,0.08); color: var(--accent); text-decoration: none; }
.wiki-sidebar a.active { border-left-color: var(--accent); background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.wiki-main { padding: 1.5rem 2rem 3rem; max-width: 820px; }
.breadcrumb { font-size: 0.85rem; color: var(--ink-soft); margin-bottom: 1rem; }
.breadcrumb a { color: var(--ink-soft); }

.infobox {
  float: right; width: min(100%, 280px); margin: 0 0 1rem 1.5rem;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
}
.infobox img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.infobox-body { padding: 0.85rem 1rem; font-size: 0.88rem; }
.infobox-body dt { font-weight: 600; color: var(--ink-soft); font-size: 0.78rem; margin-top: 0.5rem; }
.infobox-body dd { margin: 0.15rem 0 0; }

h1 { font-size: 1.75rem; line-height: 1.35; margin: 0 0 1rem; border-bottom: 2px solid var(--accent); padding-bottom: 0.5rem; }
h2 { font-size: 1.25rem; margin: 2rem 0 0.75rem; color: var(--ink); }
h3 { font-size: 1.05rem; margin: 1.25rem 0 0.5rem; }
.prose p { margin: 0 0 1rem; }
.prose ul, .prose ol { margin: 0 0 1rem; padding-left: 1.4rem; }
.prose li { margin-bottom: 0.35rem; }

.wiki-toc {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1rem 1.25rem; margin: 1.5rem 0;
}
.wiki-toc h2 { font-size: 0.95rem; margin: 0 0 0.5rem; border: none; padding: 0; }
.wiki-toc ol { margin: 0; padding-left: 1.2rem; font-size: 0.9rem; }
.wiki-toc a { color: var(--link); }

.partner-box {
  display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1.5rem 0;
  padding: 1rem; background: var(--accent-soft); border-radius: var(--radius);
}
.partner-box a {
  padding: 0.4rem 0.85rem; background: #fff; border-radius: 6px;
  font-size: 0.88rem; border: 1px solid var(--border);
}
.partner-box a:hover { border-color: var(--accent); text-decoration: none; }

.img-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.img-row figure { margin: 0; background: var(--bg-card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
.img-row figcaption { padding: 0.5rem 0.75rem; font-size: 0.82rem; color: var(--ink-soft); }

.callout {
  border-left: 4px solid var(--accent); background: var(--accent-soft);
  padding: 0.85rem 1rem; margin: 1rem 0; border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.92rem;
}

.page-hero { padding: 2rem 0 1rem; background: linear-gradient(180deg, #fff 0%, var(--bg) 100%); border-bottom: 1px solid var(--border); }
.page-hero h1 { border: none; font-size: 1.5rem; margin: 0; }

.site-footer {
  background: #fff; border-top: 1px solid var(--border);
  padding: 1.5rem 0; margin-top: 2rem; font-size: 0.88rem; color: var(--ink-soft);
}
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 0.75rem; }
.footer-links a { color: var(--ink-soft); }

.error-page { text-align: center; padding: 4rem 1rem; }
.error-page h1 { font-size: 4rem; margin: 0; color: var(--accent); border: none; }
.error-page p { color: var(--ink-soft); }

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--border);
    padding: 0.5rem; transform: translateY(-120%); opacity: 0;
    transition: 0.25s; pointer-events: none; z-index: 400;
  }
  .site-nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .site-nav ul { flex-direction: column; }
  .wiki-shell { grid-template-columns: 1fr; }
  .wiki-sidebar { position: static; height: auto; border-right: none; border-bottom: 1px solid var(--border); }
  .wiki-main { padding: 1rem; }
  .infobox { float: none; width: 100%; margin: 0 0 1rem; }
  .ads-top-bar .container { width: 100%; padding-inline: 0.75rem; }
  #ads {
    flex-wrap: nowrap;
    overflow-x: auto;
    scroll-snap-type: x proximity;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
  }
  #ads::-webkit-scrollbar { display: none; }
  #ads > div,
  #ads .ads-item { width: 84px; flex-shrink: 0; scroll-snap-align: center; }
}