:root {
  --violet: #8B5CF6; --pink: #EC4899; --cyan: #06B6D4;
  --bg-base: #F8F4FF; --bg-blush: #FFF4F9; --surface: #FFFFFF;
  --text-primary: #1E0A3C; --text-secondary: #7C6B8A; --text-muted: #B0A0C0;
  --border-soft: #EDD9FF; --border-faint: #F3EAFF;
  --code-bg: #F6F1FF;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Outfit', sans-serif; color: var(--text-primary);
  background: linear-gradient(135deg, var(--bg-base) 0%, #FFEEF8 50%, var(--bg-blush) 100%);
  background-attachment: fixed; min-height: 100vh; line-height: 1.6;
}
a { color: var(--violet); }
.gradient-text {
  background: linear-gradient(90deg, var(--violet) 0%, var(--pink) 50%, var(--cyan) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.top { position: sticky; top: 0; z-index: 5; backdrop-filter: blur(12px);
  background: rgba(248,244,255,0.85); border-bottom: 1px solid var(--border-faint); }
.top-inner { max-width: 1180px; margin: 0 auto; padding: 14px 28px; display: flex; align-items: center; gap: 20px; }
.wordmark { font-size: 24px; font-weight: 700; letter-spacing: -1.5px; text-decoration: none; margin-right: auto; }
.top-actions { display: flex; align-items: center; gap: 20px; }
.nav-link { font-size: 15px; font-weight: 600; color: var(--text-secondary); text-decoration: none; }
.nav-link:hover { color: var(--violet); }
.btn-nav { font-size: 14px; font-weight: 600; color: var(--violet); border: 1.5px solid var(--border-soft);
  border-radius: 10px; padding: 8px 18px; text-decoration: none; }
.btn-nav:hover { border-color: var(--violet); background: var(--bg-base); }
.menu-btn { display: none; font: inherit; font-size: 14px; font-weight: 600; color: var(--violet);
  background: transparent; border: 1.5px solid var(--border-soft); border-radius: 10px; padding: 8px 14px; }

.layout { max-width: 1180px; margin: 0 auto; padding: 0 28px; display: grid; grid-template-columns: 240px 1fr; gap: 48px; }
.side { position: sticky; top: 64px; align-self: start; max-height: calc(100vh - 64px); overflow-y: auto; padding: 32px 0 40px; }
.side-home { display: block; font-weight: 700; font-size: 15px; color: var(--text-primary); text-decoration: none; margin-bottom: 18px; }
.nav-group { margin-bottom: 18px; }
.nav-section { font-size: 11px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 6px; }
.side a:not(.side-home) { display: block; font-size: 14px; font-weight: 500; color: var(--text-secondary); text-decoration: none;
  padding: 5px 10px; border-radius: 8px; margin-left: -10px; }
.side a:not(.side-home):hover { color: var(--violet); background: var(--surface); }
.side a.active { color: var(--violet); background: var(--surface); font-weight: 600; }

.content { min-width: 0; padding: 32px 0 40px; }
.crumb { font-size: 13px; color: var(--text-muted); margin-bottom: 10px; }
.crumb a { color: var(--text-secondary); text-decoration: none; }
.prose { background: var(--surface); border: 1px solid var(--border-faint); border-radius: 20px; padding: 40px 48px; }
.prose h1 { font-size: 36px; font-weight: 800; letter-spacing: -1px; line-height: 1.15; margin-bottom: 14px; }
.prose h2 { font-size: 24px; font-weight: 700; letter-spacing: -0.5px; margin: 40px 0 12px; padding-top: 8px; }
.prose h3 { font-size: 18px; font-weight: 700; margin: 26px 0 8px; }
.prose p, .prose ul, .prose ol, .prose table, .prose pre, .prose blockquote { margin-bottom: 14px; }
.prose ul, .prose ol { padding-left: 26px; }
.prose li { margin-bottom: 4px; }
.prose li > ul, .prose li > ol { margin-top: 4px; margin-bottom: 4px; }
.prose p.lead { font-size: 18px; color: var(--text-secondary); }
.prose blockquote { border-left: 3px solid var(--violet); background: var(--bg-base); padding: 12px 18px; border-radius: 0 12px 12px 0; color: var(--text-secondary); }
.prose blockquote p:last-child { margin-bottom: 0; }
.prose code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.92em; background: var(--code-bg); padding: 1px 6px; border-radius: 6px; }
.prose pre { background: var(--code-bg); padding: 14px 18px; border-radius: 12px; overflow-x: auto; }
.prose pre code { background: none; padding: 0; }
.prose table { width: 100%; border-collapse: collapse; font-size: 15px; }
.prose th, .prose td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border-faint); vertical-align: top; }
.prose th { font-size: 12px; text-transform: uppercase; letter-spacing: 0.8px; color: var(--text-muted); }
.prose img { max-width: 100%; border-radius: 12px; }
.prose hr { border: 0; border-top: 1px solid var(--border-faint); margin: 32px 0; }
.prose kbd, .prose .ui { font-family: inherit; font-size: 0.92em; font-weight: 600; color: var(--violet); background: var(--bg-base); border: 1px solid var(--border-soft); border-radius: 6px; padding: 0 6px; }

.toc { float: right; width: 220px; margin: 0 0 18px 28px; padding: 14px 16px; background: var(--bg-base); border-radius: 14px; font-size: 13px; }
.toc-title { font-weight: 700; font-size: 11px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 6px; }
.toc ul { list-style: none; padding: 0; margin: 0; }
.toc li { margin: 3px 0; }
.toc a { color: var(--text-secondary); text-decoration: none; }
.toc a:hover { color: var(--violet); }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; margin-bottom: 8px; }
.card { display: flex; flex-direction: column; gap: 6px; padding: 18px 20px; background: var(--bg-base); border: 1px solid var(--border-faint);
  border-radius: 14px; text-decoration: none; color: var(--text-primary); transition: border-color .18s, transform .18s; }
.card:hover { border-color: var(--violet); transform: translateY(-2px); }
.card strong { font-size: 16px; }
.card span { font-size: 14px; color: var(--text-secondary); line-height: 1.45; }

.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 20px; font-size: 15px; font-weight: 600; }
.pager a { text-decoration: none; }
.foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-top: 40px; padding-top: 20px;
  border-top: 1px solid var(--border-faint); font-size: 13px; color: var(--text-muted); }
.foot a { color: var(--text-secondary); text-decoration: none; }

@media (max-width: 880px) {
  .layout { grid-template-columns: 1fr; gap: 0; padding: 0 16px; }
  .side { display: none; position: static; max-height: none; padding: 16px 0 0; }
  body.nav-open .side { display: block; }
  .menu-btn { display: inline-block; }
  .top-inner { padding: 12px 16px; }
  .top-actions .btn-nav { display: none; }
  .prose { padding: 26px 20px; border-radius: 16px; }
  .prose h1 { font-size: 28px; }
  .toc { float: none; width: auto; margin: 0 0 18px; }
}